JP6739014B2 - Bone remover in fish - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fish-bone deboning tool and a method for producing a fish-medium-deboned fish body using the fish bone-deboning tool.

Fish is a high-protein, nutritious food, and is positioned as an important marine resource in Japan and other countries around the world. In particular, small-scale marine fish have a relatively large amount of fish and can be distributed at low cost, and in addition, they often have relatively low fat and contain functional components such as calcium, taurine, and DHA. Therefore, it is a food material that matches the current taste of consumers who are highly health-conscious. Furthermore, small marine fishes are also fisheries resources that have been attracting attention in the effective use of fishery resources in coastal areas where fishing and fishery processing are prosperous and the promotion of local industries.

However, fish not only has excellent advantages as a food material, but also has the following problems that hinder the use of the food material and the expansion of demand. Specifically, the fish has a large bone called the vertebra from the head to the caudal fin, and the vertebral bone is a skeletal structure that expands in the erasing direction while being embedded in fish meat with various small bones such as ribs attached to it. It requires a great deal of labor for removing water when cooking and processing fish. Particularly for small fish of a certain size or larger, in which it is difficult to eat the middle bones such as the vertebrae, a great amount of labor is required to remove the middle bones.
In addition, with the recent diversification of food, as a method of using food ingredients for fish, a technique is required that enables bone removal by a simple method while maintaining the fish body shape without processing the fish meat into a fillet shape. There is. For example, in a fisheries-related industry in an area where fishing and fishery processing are popular, local fish can be eaten as a snack food at tourist sites, etc., simply as heating or fried food while maintaining the shape of the fish body. There are demands such as processed fish products suitable for walking.

Here, as the boning tool in the prior art, for example, a peeler-type or scissor-shaped tool can be cited, and especially in a cooking site or the like, a tweezer-shaped shape or its developed shape is widely used. (For example, refer to Patent Document 1). However, these deboning tools require a great deal of labor for deboning action, and all of them are intended for processing fish meat into a fillet-like shape. It is a technology that is not in principle intended to realize bone removal.

In such a situation, as a prior art, two spatula-shaped bodies are combined so as to face each other, and the vertebrae are removed by inserting them into the fish body from which the head and caudal fins have been removed so as to sandwich the vertebrae from the cross section. A technique is presented (Patent Document 2). However, the fish body mid-bone deboning device having a two-faced spatula-shaped body, which is the basic structure of the device according to Patent Document 2, has the principle of pulling out with the middle bones sandwiched and the state where the meat and the bones are bound. Since it is a technology that employs a structure, it is recognized as a technology that cannot produce a clean deboned fish body due to its structural principle. Furthermore, since a large force is required at the time of insertion and removal, the operability is extremely poor.
As shown by these points, with the basic structure adopted by the device according to Patent Document 2, it is difficult to manufacture a clean deboned fish body due to its structural principle, and it is recognized as a technique with poor operability.

As the above circumstances indicate, as a problem regarding the improvement of utilization of fish ingredients, there is a demand for a technique for producing a fish body with a deboned skin in which the edible portion of the fish meat is in a beautiful state, and the deboning operation is simple and There is a demand for the development of technology that can be carried out quickly.

Japanese Patent No. 4530305 JP, 2004-8459, A JP, 6-253725, A

The present invention has been made in view of the circumstances of the above-mentioned conventional art, and the subject is a technique that makes it possible to extract the mid-bone as a fish body with skin, and It is an object of the present invention to provide a technique capable of producing a medium-boned fish body with a clean skin by a quick and simple operation.

In the situation of the prior art described above, the present inventor has conducted earnest studies and, as a result, has conceived to use a hollow tube or a structure provided with a hollow tube for deboning a fish body. Further, the present inventor has conducted comparative experiments and repeated studies on the tip shape. As a result, the hollow tube has a tip portion having a repeating structure of protrusions and valleys which is four or more in terms of the number of protrusions. Therefore, it was found that the middle bones can be extracted from the fish body by a quick and simple operation without requiring excessive force.
Specifically, the ribs on the ventral side and the vertebrae on the dorsal side are inserted by inserting the midbone from the cross-sectional direction of the fish body from which the head and caudal fins have been removed so as to be stored in the hollow tube of the deboning tool for the fish body. When hitting the valley of the tip, the entire hollow tube rotates naturally, and the insertion progresses along the inside bone while the inside bone is stored neatly, and the binding of bone and meat without force is required during insertion. It was found that it was possible to pierce the opposite side of the fish body while excising. Furthermore, in the insertion operation, depending on the fish species, it was possible to store the ribs and the like associated with the vertebrae in the hollow tube so as to be folded together. It was found that, after the insertion operation, by removing the hollow tube in a state where the inner bone is stored, a fish body with a clean edible portion can be manufactured without the fish meat being turned up.
Even if a person who is unfamiliar with the operation performs the series of insertion and extraction operations, the yield of the success rate is extremely high and the operation can be completed in an extremely short time.

Here, as a related technique related to the field of the present invention, a technique for sucking the gills and internal organs of a fish by a cleaner device provided with a hollow tube according to Patent Document 3 is disclosed. However, in paragraph 0015 of Patent Document 3, it is described that an operation of preliminarily cutting off a middle bone such as a vertebra with a “spatular member” or the like is performed. Here, Patent Document 3 does not assume that the hollow bone itself, which is the tip of the cleaner, is used to perform hollowing out of the middle bone, and a fish skeleton structure suitable for perforation while storing the middle bone is provided. No statement is made to disclose or suggest technical features regarding the special tip shape, etc. considered.

Further, the present inventor manufactured a bone removing tool having two facing spatula-shaped bodies in the examples of the present specification as a bone removing tool having the basic structure of Patent Document 2 described in the above background art and conducted a comparative experiment. It was As a result, the bone-removing tool requires a strong force during insertion, and at the time of extraction, the binding portion with the fish meat is turned over, which makes it difficult to produce a medium-boned fish body with a clean fish meat portion. Was confirmed.

The present inventor has completed the present invention based on the above findings. The present invention specifically relates to the invention described below.
[Item 1]
A device which is or is provided with a hollow tube, wherein at least one end of the hollow tube is provided with a repeating structure of protrusions and valleys at least 4 in the number of protrusions at the tip of the pipe wall. A deboning tool in a fish body, which is characterized in that
[Item 2]
Item 2. The fish body deboning tool according to Item 1, wherein the hollow tube is a right circular tube having a circular cross section or a substantially circular cross section.
[Item 3]
The structure of the tip portion of the wall of the hollow tube is
(A-1) The projecting portion is arranged so as to be point-symmetrical, substantially point-symmetrical, line-symmetrical, or substantially line-symmetrical when viewed from the front end direction,
(A-2) The positions of the tips of the protrusions are equidistant or substantially equidistant to the cross section of the hollow tube,
Item 3. The dewatering device for fish body according to Item 1 or 2, wherein
[Item 4]
The structure of the tip portion of the wall of the hollow tube is
(A-3) (i) The outer side surface and the inner side surface of the protrusion are arranged in parallel with the tube wall of the hollow tube without substantially changing the curvature and the angle, or (Ii) An angle formed by an outer tangent line and an inner tangent line in the long axis direction of the hollow tube on the outer side surface and the inner side surface of the protrusion and the long axis of the tube wall surface of the hollow tube is in a range of −10° to +10°. Arranged at an inner curvature and/or angle,
(A-4) The difference between the tip of the protrusion and the bottom of the valley is 1 mm or more,
Item 4. The dewatering device for fish body according to any one of Items 1 to 3, characterized in that
[Item 5]
The shape of the hollow tube is
(B-1) The longest cross-sectional distance of the inner shape is a value exceeding 4 mm,
(B-2) The maximum cross-sectional length of the outer shape is a value less than 14 mm,
(B-3) The tube wall thickness is 0.05 to 2 mm,
Item 5. The fish body deboning tool according to any one of Items 1 to 4.
[Item 6]
The material forming the hollow tube is
When inserting the distal end of the hollow tube from the cross-sectional direction of the fish body from which the head and caudal fins have been substantially removed so that the midbone is stored in the hollow tube of the fish core deboning tool,
(C-1) A material having a strength such that the hollow tube is not destroyed by insertion, and
(C-2) A material that flexibly bends along the midbone along with insertion,
Item 6. A boning device in a fish body according to any one of Items 1 to 5, which is constituted by
[Item 7]
Item 7. The fish body deboning device according to any one of Items 1 to 6, wherein at least a part or all of the hollow tube is made of a transparent resin.
[Item 8]
The shape of the tip of the protruding portion is a mountain shape with a vertex at the tip, a mountain shape with a rounded tip, a truncated mountain shape, a rounded truncated mountain shape, a wavy shape, a half Item 8. The fish body deboning tool according to any one of Items 1 to 7, which includes a circular shape, a rectangular shape, a rounded substantially rectangular shape, a trapezoidal shape, a rounded substantially trapezoidal shape, or a rough shape of the shape.
[Item 9]
For the fish body with the head and caudal fin removed or substantially removed,
(Step 1) Insert the tip part of the fish-bone deboning tool according to any one of Items 1 to 8 so that the mid-bone is stored in the hollow tube of the fish-bone deboning tool from the cross-sectional direction of the fish body. ,
(Step 2) removing the middle bones stored in the hollow tube from the fish body by extracting the medium body bone removing tool.
A method for producing a medium-boned fish body, which is characterized in that
[Item 10]
Item 10. The method according to Item 9, wherein the fish body is a small fish body having a total length of 10 to 45 cm.
[Item 11]
Item 10. A method for producing a processed food using the deboned fish obtained by the method according to Item 9 or 10.
[Item 12]
Item 10. A fish body processing device for medium bone removing, comprising the fish body middle bone removing tool according to any one of Items 1 to 8 as a member or a detachable member.

INDUSTRIAL APPLICABILITY The present invention is a technique that enables the removal of the inside bones of a fish body with the skin, and enables the production of the inside bone-removed fish body with a clean skin of the portion where the inside bones are removed by a quick and simple operation. Provide technology.

INDUSTRIAL APPLICABILITY According to the present invention, for example, it is possible to produce a skinned fish body having clean fish meat without processing the fish meat into a fillet shape or the like. The deboned fish body produced by using this technique can be provided as a new food material that takes advantage of its characteristics.

It is a front end side perspective view showing the whole structure about one mode of the inside-boning tool concerning the present invention.

FIG. 3 is a distal end side perspective view showing the enlarged distal end portion of one embodiment of the medium bone removing device according to the present invention.

2 is a photographic image of the medium boning tool manufactured in Example 1. FIG. 3A: A photographic image of the entire structure taken from above. FIG. 3B: a photographic image of the tip taken from a perspective direction.

6 is a photographic image of each step of the deboning process in Example 1. FIG. 4A: Overall image of untreated fish. FIG. 4B: Overall image of fish body with head and caudal fin removed. FIG. 4C: A cut surface image of the head side of the fish body with the head and caudal fin removed.

6 is a photographic image of each step of the deboning process in Example 1. FIG. 5A: A photographic image of a state in which the medium deboning tool is inserted from the head-side cutting surface direction of the fish body. FIG. 5B: A photographic image of a fish body that penetrates the tip portion of the medium deboning tool. FIG. 5C: An overall view of the medium bone-removing fish body and the medium bone-removing tool after extraction.

3 is a photographic image of the state after the medium deboning process in Example 1. FIG. 6A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a middle bone extracted from a hollow tube. FIG. 6B: Enlarged image of the middle bone extracted from the hollow tube.

FIG. 6 is a result diagram of the pressing force during insertion in the medium deboning process in Example 1 measured by a small test force measuring device. The symbol M in the figure indicates the peak of the maximum test force. The variation (mm) on the horizontal axis of the graph in the figure indicates the moving distance of the hollow tube tip portion during the insertion treatment, and the test force (N) on the vertical axis indicates the pressing force applied during the insertion treatment.

It is the photograph image which image|photographed the inside boning tool manufactured in Test Example 1. FIG. 8A: A photographic image of the entire structure taken from the top direction. FIG. 8B: A photographic image of the tip taken from a perspective direction.

It is the photograph image which image|photographed the inside bone removal tool manufactured in Test example 2, and its use condition. FIG. 9A: A photographic image of the entire structure taken from above. FIG. 9B: A photographic image of the tip taken from a perspective direction. FIG. 9C: A photographic image of a fish body that penetrates the tip portion of the medium deboning tool.

7 is a photographic image of the medium boning tool manufactured in Example 2. FIG. 10A: A photographic image of the entire structure taken from above. FIG. 10B: A photographic image of the tip portion taken from a perspective direction.

7 is a photographic image of the medium boning tool manufactured in Example 2. FIG. 11A: A photographic image of the entire structure taken from above. FIG. 11B: A photographic image of the tip taken from a perspective direction.

7 is a photographic image of the medium boning tool manufactured in Example 2. FIG. 12A: A photographic image of the entire structure taken from the top direction. FIG. 12B: A photographic image of the tip taken from a perspective direction.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 13A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 13B: Head-side cross-sectional image of a fish body with deboned bones.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 14A: An overall view of a medium-bone-removing fish body, a medium-bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 14B: Head-side cross-sectional image of a fish body with deboned bones.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 15A: Whole image of fish with deboned bones, bones extracted from hollow tube, and internal organs. FIG. 15B: Head-side cross-sectional image of a fish body with deboned bones.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 16A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 16B: Head-side cross-sectional image of a fish with a deboned bone.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 17A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 17B: Head-side cross-sectional image of a fish body with deboned bones.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 18A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 18B: Cross-sectional image of the head-side cross section of a fish with a deboned bone.

9 is a photographic image of a state after the medium deboning process in Example 3. FIG. 19A: An overall view of a medium bone-removing fish body, a medium bone-removing tool, and a medium bone extracted from a hollow tube. FIG. 19B: Head-side cross-sectional image of a fish with a deboned bone.

8 is a photographic image of a processed food product with a stick in Example 4. FIG. 20A: Processed food material that is a fish with a stick. FIG. 20B: Processed food with a stick cooked in a fried manner. FIG. 20C: Processed food with a stick cooked in a fried style.

It is a photographic image of a skeletal fish body with exposed middle bones after removing the body from the grilled Yamatokamas fish. FIG. 21A: Overall image of skeletal fish body. FIG. 21B: Enlarged image of the middle ribs and ribs on the head side. FIG. 21C: Enlarged image of the caudal side ribs and ribs.

Hereinafter, embodiments of the present invention will be described in detail. Moreover, the code numbers in the following description mean the code numbers used in the drawings.

[Explanation of terms]
As used herein, the term "full length" refers to the length from the snout of the tip of the head to the fish body to the end of the caudal fin. As used herein, the term “medium bone” refers to the hard skeletal structure of the vertebra and its surroundings (see FIG. 21).

1. Fish body during boning device invention is a device with a with or hollow tube hollow tube, having a repeating structure of protrusions and valleys in the tube wall of the tip section in at least one end of said hollow tube The present invention relates to a deboning tool for a fish body.
The fish body deboning tool (1) according to the present invention does not exclude the inclusion of features other than the technical features relating to the structure and material described below. Further, the technical scope of the present invention is not limited to the aspect including all the features other than the essential features described below.

[Structure related to hollow tube]
The deboning tool in a fish body according to the present invention is a hollow tube or an instrument provided with a hollow tube. The fishbone dewatering device according to the present invention includes a mode in which the device itself is a hollow tube structure. It is also possible to use a structure having another structure in a manner that does not hinder the insertion and/or the withdrawal into/from the fish body.

The hollow tube (2) that constitutes the fish deboning tool according to the present invention is a tube-shaped structure that is composed of a tube wall that is a support portion and that the inside of the tube is hollow.
The tip portion (3), which is the insertion direction side of the hollow tube according to the present invention into the fish body, is provided with an opening that is in an open state when used. The opening (33) is preferably integrated with the tube wall of the hollow tube having no protruding structure or step structure so that the resistance to insertion into and removal from the fish body is reduced. The hollow tube according to the present invention is also provided with a structure in which the rear end portion (4) side, which is the end opposite to the front end portion, is also in an open state.

The hollow tube according to the present invention preferably has a shape that has low resistance when the fish body is inserted and is suitable for storing the middle bone. As the shape, for example, the cross-sectional shape may be an annular shape, a substantially annular shape, a polygonal ring shape of 6 or more, or the like. An annular shape or an approximately annular shape is preferable, and an annular shape is more preferable. From the viewpoint of member manufacturing cost, an annular cross section is preferable.
As the hollow tube according to the present invention, it is preferable that the hollow tube has a straight tube shape suitable for storing the mid-bone when inserting the fish body. Further, as the hollow tube according to the present invention, it is preferable that the hollow tube main body, which is a portion excluding the tip portion and the like, has substantially the same transverse cross section regardless of its position. That is, in the hollow tube according to the present invention, when the cross-section is annular, the inner diameter and the outer diameter are constant, and the pressure reducing action at the time of insertion and withdrawal is suitably exhibited. Is preferred.
That is, as a preferred aspect of the hollow tube according to the present invention, it is desirable that the hollow tube is a right circular tube having a circular cross section.

As a material forming the hollow tube according to the present invention, it is preferable that the material has a strength that can withstand insertion and extraction operations into and from the fish body.
That is, as the material constituting the hollow tube according to the present invention, (i) the tip portion provided with the protruding portion and the valley portion, the middle bone from the cross-sectional direction of the fish body from which the head and caudal fins have been removed It is preferable that the bone removing tool is made of a material having a strength such that the hollow tube is not destroyed by the insertion when it is inserted so as to be stored in the hollow tube.

As a material forming the hollow tube according to the present invention, it is preferable that the material has flexibility so that the hollow tube can be inserted along the middle bone when the hollow tube is inserted into the fish body.
That is, as the material constituting the hollow tube according to the present invention, (ii) the tip portion having the protruding portion and the trough portion, the middle bones in the fish body from the cross-sectional direction of the fish body with the head and caudal fins removed It is preferable that the bone removing tool is made of a material that flexibly bends along the middle bone when being inserted so as to be stored in the hollow tube of the bone removing tool. When the material is supple, it is possible to favorably cope with a fish body or the like in which the vertebrae are in a slightly bent state, and the yield in the deboning operation is improved, which is preferable.

As a material forming the hollow tube according to the present invention, for example, a hollow tube made of a metal such as stainless steel or aluminum can be used to manufacture a deboning tool having sufficient strength. Further, as the material having sufficient strength and flexibility for the fish deboning operation according to the present invention, resins such as polycarbonate, polystyrene, polyethylene terephthalate, polypropylene, polymethylpentene, acrylic resin, ABS resin, and composite materials thereof are used. It is preferable to use a manufactured material.

Further, as the material constituting the hollow tube according to the present invention, at least a part or all of the hollow tube is transparent in consideration of the ease of confirmation in the storage condition of the middle bones and the cleaning after use. It is preferable that it is composed of the provided material. It is preferable that all of the hollow tubes are made of a transparent material.
Here, as the material having transparency, a material having high transparency is preferable in that the inside of the hollow tube can be visually recognized. In addition, the appearance is clear, which is preferable. Further, as the transparent material, it is possible to use a transparent material having a color.
Specific examples of the transparent material include a transparent resin having sufficient strength and flexibility for the fish body deboning operation according to the present invention. More specifically, it is preferable to employ a transparent resin such as polycarbonate, polystyrene, polyethylene terephthalate, polypropylene, polymethylpentene, acrylic resin, ABS resin, or a composite material of these. As the material having transparency, it is possible to use materials other than the above-mentioned transparent resin. For example, glass or the like can be used as long as it is designed without any problem in terms of strength.

As the size of the hollow tube according to the present invention, it is possible to appropriately change the design according to the species of fish to be treated and the fish body size, but in the case of use assuming a small fish, it is as follows. It can be size.
That is, as the “inner shape size” when used assuming a small fish, for example, the longest cross-sectional distance of the inner shape (inner diameter when the cross section is circular) exceeds +1 mm with respect to the mid-bone diameter of the target fish. Is preferably +1 mm or more, more preferably +1.5 mm or more, still more preferably +2 mm or more, and particularly preferably +2.5 mm or more. If the inner shape size is too small, the insertion operation becomes unexecutable or the operability and success rate are hindered, which is not preferable.
Here, as an example of a specific inner shape size, for example, in the case of a small fish with a medium bone diameter of 3 mm, it is desirable that the longest cross-sectional distance of the inner shape exceeds 4 mm, preferably 4 mm or more, more preferably Is 4.5 mm or more, more preferably 5 mm or more, and particularly preferably 5.5 mm or more.
Further, for example, in the case of a small fish having a medium bone diameter of 5 mm, it is desirable that the longest distance in cross section of the inner shape exceeds 6 mm, preferably 6 mm or more, more preferably 6.5 mm or more, further preferably 7 mm or more, Particularly preferably, the one having a size of 7.5 mm or more is suitable.
Furthermore, for example, in the case of a small fish having a medium bone diameter of 7 mm, it is desirable that the longest distance of the cross section of the inner shape exceeds 8 mm, preferably 8 mm or more, more preferably 8.5 mm or more, further preferably 9 mm or more, Particularly preferably, the one having a size of 9.5 mm or more is suitable.
Although it is possible to use a large value as the upper limit of the inner shape size of the hollow tube, the upper limit value is necessarily limited by the outer shape size of the hollow tube and the tube wall thickness. For example, when the outer shape has the longest cross-sectional distance (outer diameter when the cross-section is circular) of 14 mm and the tube wall thickness is 0.05 mm, the longest cross-sectional distance of the inner shape according to the aspect is 13.9 mm. Becomes

The “outer shape size” of the hollow tube according to the present invention can be set to the following sizes in the case of using the small fish in consideration of the fish meat residual ratio.
That is, as the outer shape size in the case of using a small fish, for example, the longest cross-sectional distance of the outer shape (outer diameter when the cross section is circular) is less than +7 mm with respect to the mid-bone diameter of the target fish. Desirably, preferably +7 mm or less, more preferably +6.5 mm or less, further preferably +6 mm or less, and particularly preferably +6.5 mm or less. If the outer shape size is too large, the residual rate of fish meat in the deboned fish body after treatment is low, which is not preferable. Further, the shape of the fish body after the middle deboning treatment tends to be easily crushed, which is not preferable.
Here, as an example of a specific outer shape size, for example, in the case of a small fish having a median bone diameter of 3 mm, it is desirable that the outer shape has a maximum cross-sectional distance of less than 10 mm, preferably 10 mm or less, and more preferably Is preferably 9.5 mm or less, more preferably 9 mm or less, and particularly preferably 8.5 mm or less.
Further, for example, in the case of a small fish having a medium bone diameter of 5 mm, it is desirable that the outer shape has a maximum cross-sectional maximum distance of less than 12 mm, preferably 12 mm or less, more preferably 11.5 mm or less, still more preferably 11 mm or less, It is particularly preferably 10.5 mm or less.
Furthermore, for example, in the case of a small fish with a median bone diameter of 7 mm, it is desirable that the maximum cross-sectional distance of the outer shape is less than 14 mm, preferably 14 mm or less, more preferably 13.5 mm or less, still more preferably 13 mm or less. It is particularly preferably 12.5 mm or less.
Although it is possible to use a small value as the lower limit of the outer shape size of the hollow tube, the lower limit value is necessarily limited by the inner shape size of the hollow tube and the tube wall thickness. For example, if the longest cross-sectional distance of the inner shape (inner diameter when the cross-section is circular) is 4 mm and the tube wall thickness is 0.05 mm, the longest cross-sectional distance of the inner shape according to the aspect is 4.1 mm. Become.

It is desirable to determine the "tube wall thickness" of the hollow tube in consideration of the strength and flexibility of the material, but if it is too thin, the ribs etc. will be cut when inserting the tip part into the fish body. Therefore, it is preferable that the thickness is not less than a certain value because it easily remains in the fish meat. For example, the tube wall thickness of the hollow tube when a small fish is assumed is 0.05 mm or more, preferably 0.1 mm or more, more preferably 0.2 mm or more, and further preferably 0.3 mm or more. .. As the upper limit, when it is too thick, the resistance becomes too large when it is inserted into the fish body, which is not preferable. Therefore, the upper limit is, for example, 2 mm or less, preferably 1.5 mm or less, more preferably 1.25 mm or less, and further preferably 1 mm or less. It is suitable.

The long axis length, which is the "total length" of the hollow tube, can be changed and designed as appropriate according to the type of fish to be used and the size of the fish body prepared for deboning, but a small fish is assumed. In the case of such use, the size can be set as follows.
That is, as the major axis length assuming a small fish, it is preferable that the major fish axis has a major axis length sufficient to store the entire middle bone in the target fish body. That is, the major axis length is preferably 7 cm or more, preferably 10 cm or more, more preferably 13 cm or more, and further preferably 15 cm or more in terms of the length of the entire hollow tube including the tip portion. If the major axis length is too short for the fish body of the target fish, the entire mid-bone cannot be stored, and the meat will be turned over when the binding portion with the fish meat is torn off during extraction, which is not preferable. The upper limit of the major axis length may be, for example, 35 cm or less, preferably 25 cm or less, and more preferably 20 cm or less in consideration of operability and manufacturing efficiency.

Structure of Tip Part The hollow tube of the fish bone remover according to the present invention is provided with a tip part (3) having a repeating structure of a protrusion part (31) and a valley part (32) at the tip part of the tube wall. It is a feature.
In the fish body deboning tool according to the present invention, with respect to the fish body from which the head and caudal fins have been removed, by inserting the mid bone so as to be stored in the hollow tube from the cross-sectional direction, the characteristics of the tip shape The effect of reducing the pressure at the time of insertion is achieved, and it becomes possible to store the middle bone in the hollow tube without requiring undue force.
Here, in the case of using a hollow tube having a mere flat shape at the distal end portion, since a large force is required at the time of insertion, the middle bone is often removed and penetrated at the time of insertion, and a good middle bone removing effect according to the present invention is obtained. Cannot be achieved. The flat hollow tube is not preferable because cutting of ribs and the like is likely to occur due to excessive pressure during insertion, and many small bones such as ribs tend to remain.
In addition, even when a hollow tube (see Test Example 1 in the present specification) is used in which the tip is cut so as to have an oblique cross section and only a part of the tube end is projecting, Since it is often removed and penetrated, it is not possible to achieve a good deboning effect according to the present invention. Furthermore, since it is necessary to apply a strong pressing force at the time of insertion, there is a concern that the hand may be damaged due to the tip cut shape.

The fish deboning tool according to the present invention has a structure in which at least one end of a hollow tube is provided with a tip portion (3) which is a repeating structure of a protruding portion and a valley portion.
Here, the fish body deboning tool according to the present invention may have a structure in which the distal end portions are provided at both ends of the hollow tube. However, when using the fish body deboning tool according to the present invention, it is preferable that the opposite end of the tip side to be inserted into the fish body is not a sharp structure in terms of operability and safety, and the fish body according to the present invention. Considering the mass production cost in manufacturing the middle boning tool, the tip part (3) has a structure with only one end of the hollow tube, and the opposite end has a flat or rounded tube wall end. Preferably.

The structure of the distal end portion of the tube wall of the hollow tube according to the present invention is preferably a structure having four or more protrusions. In the fish core deboning device according to the present invention, by adopting the shape as the distal structure of the hollow tube, the ribs on the ventral side and the vertebra on the dorsal side of the hollow tube at the tip portion of the hollow tube during the insertion operation. The entire hollow tube naturally rotates in contact with the trough, and the insertion progresses along the inside bone while storing the inside bone neatly, and the bone and meat can be inserted without excessive force during insertion. It is possible to penetrate to the opposite side of the fish body while cutting off the binding. Further, in the insertion operation, depending on the fish species, ribs and vertebrae connected to the vertebrae can be folded and stored in the hollow tube so as to naturally fall into the valley.

As the structure of the distal end portion of the hollow tube according to the present invention, when a hollow tube structure having four or more protrusions is adopted, a structure that functions well as the fish bone demining tool according to the present invention Becomes Here, in the case of a hollow tube having the number of ridges of 3 or less, force is required at the time of insertion, and it is difficult to insert it along the middle bone, which is not preferable. In particular, a hollow tube having a number of protrusions of 0 (flat shape) is not preferable because the success rate of the deboning action is significantly reduced.
In the present invention, the number of repeating structures of the protruding portion and the valley portion of the distal end portion is 4 to 12, preferably 4 to 12 in terms of the number of protruding portions in consideration of the pressure reducing action at the time of insertion and the stable insertability along the midrib. 4 to 10 can be mentioned. Further, when the projecting portions are arranged in an even number that is point-symmetrical when viewed from the distal direction, it is suitable in terms of stable insertability because it matches the structure of the midbone. Note that the number of protruding portions is optimally 4 to 8 when comprehensively considering the mass productivity of the device and the effect of fish body treatment.

The arrangement of the repeating structure of the projecting portion and the valley portion at the tip portion of the tube wall of the hollow tube according to the present invention is such that the projecting portion is point-symmetrical, substantially point-symmetrical, line-symmetrical, or substantially line-symmetrical when viewed in the distal direction. It is preferable that the structure is so arranged. The structure is preferably arranged so as to be point-symmetrical or substantially point-symmetrical. Adopting this shape is preferable because the entire hollow tube can be more easily rotated by the contact between the trough and ribs of the distal end.

As for the shape of the projecting portion at the tip portion, the tip of the projecting portion has a substantial height difference as compared with the bottom of the valley portion, and the tip portion has a pressure reducing action during fish body insertion and along the midrib. There is no particular limitation as long as it has a shape that can exhibit stable insertability and the like. The difference between the tip of the protrusion and the bottom of the valley that allows the tip (3) to exert a sufficient effect is, for example, 1 mm or more, preferably 2 mm, more preferably 3 mm or more, More preferably, it can be 4 mm or more. The upper limit is, for example, 12 mm or less, preferably 10 mm or less, and more preferably 8 mm or less.
Further, as the four or more protrusions in the tip portion, it is desirable that the positions of the tips of the protrusions are equidistant or substantially equal to the cross section of the hollow tube. In this aspect, when the tip of the hollow tube according to the present invention is inserted into the fish body, the tips of the respective protrusions come into contact with each other at the same time, and the tip can be stably inserted along the middle bone, which is preferable. The term “substantially equidistant” here means a distance that allows an error of 0.4 mm or less, preferably 0.2 mm or less, in consideration of the size scale of the protrusion.

As the shape of the protruding portion at the tip, specifically, a mountain shape with a vertex at the tip, a mountain shape with a rounded tip, a truncated mountain shape, a rounded truncated mountain shape, a wave Shape, semicircle, rectangle, rounded rectangle, trapezoid, rounded trapezoid, inverted trapezoid, arrow shape, diamond shape, pen tip shape, sickle shape, blade shape, Each of the above-mentioned shapes having two or more notches at the tip, such as a wavy tip, a rounded shape for each shape, an approximate shape of each shape, etc. Any shape can be adopted as long as the shape can be exhibited. Preferably, in consideration of operational effects and safety at the time of use, a mountain shape with a vertex at the tip, a mountain shape with a rounded tip, a decapitated mountain shape, a rounded decapitated mountain shape, It is preferable to adopt one that includes shapes such as a corrugated shape, a semicircular shape, a rectangular shape, a rounded substantially rectangular shape, a trapezoidal shape, a rounded substantially trapezoidal shape, and the above-described shape.
In addition, the mountain shape here is an equilateral triangle, an isosceles triangle with respect to a perpendicular from the vertex, a triangle with a right angle, a triangle with an obtuse angle, a triangle with an obtuse angle, from a vertex. Any mountain shape or mountain formed by a substantially triangular shape in which the side part is a curve that bulges in a convex direction, a substantially triangular shape in which the side part is concave, etc. The mold shape can be mentioned.

The shape of the valley portion at the distal end portion is not particularly limited, and any shape can be adopted as long as it does not substantially interfere with posture stability due to contact with ribs or the like during the insertion operation. For example, V-shape, rounded V-shape, U-shape, concave shape, concave shape in which both base angles are right angles, concave shape in which both base angles are obtuse angles, concave shape in which both base angles are acute angles, semicircle Shape, each shape having a graphic cut in the valley, each shape having two or more cuts in the valley, a rounded shape for each shape, a substantially shape of each shape, etc. Those including shapes can be adopted.

As a shape of the tip portion, it is preferable that one type is selected for each of the protruding portion and the valley portion and that the same shape and size are repeatedly arranged.
It is also possible to dispose two or more types or shapes of protrusions and/or valleys in combination, but in this case, line symmetry or point symmetry, preferably point symmetry when viewed from the tip direction. It is preferable that the target arrangement is adopted. Further, the positions of the respective tips of the two or more types of protrusions are preferably equidistant or substantially equidistant to the cross section of the hollow tube.

Considering the point of reducing the resistance at the time of insertion and withdrawal into the fish body, the protrusion is arranged in the longitudinal direction without substantially forming an angle with the wall surface of the hollow tube body. It is preferred that the structure is That is, it is preferable that the outer side surface and the inner side surface of the protrusion are arranged in parallel with the tube wall of the hollow tube without substantially changing the curvature and the angle. Therefore, in the present invention, when the hollow tube main body has an annular cross section, the shape of the protrusion is such that the outer surface is a convex curved surface having the same curvature as the wall surface of the hollow tube, and the inner surface is the wall surface of the hollow surface. It is preferable to make the shape of the concave curved surface having the same curvature as.
Here, “without substantially changing the curvature and the angle” means that the protrusion or the valley has a fine structure in a structure that does not substantially affect the resistance and the operability when the fish is inserted. It allows a large structural change.
Further, for the same reason, the protrusion has a slight angle or curvature with the wall surface of the hollow tube main body as long as it does not substantially affect the resistance at the time of insertion into and extraction from the fish body. It is possible to have an arrangement structure. That is, the angle formed by the outer tangent line and the inner tangent line in the hollow tube long axis direction on the outer side surface and the inner side surface of the protrusion and the long axis of the tube wall surface of the hollow tube is within a range of −10° to +10°, It is preferably in the range of -8° to +8°, more preferably in the range of -6° to +6°, further preferably in the range of -4° to +4°, particularly preferably in the range of -2° to +2°. , More preferably in the range of -1° to +1°, and even more preferably in the range of -0.5° to +0.5°, with a curvature and/or an angle. It is possible. Here, as the angle, the angle toward the inner side can be “+” and the angle toward the outer side can be “−”.
As the shape, for example, by changing the angle of the outer tangent line and the inner tangent line along the long axis direction to continuously change the curvature in the long axis direction, a shape with a slightly narrowed tip, The shape may be slightly open. Further, if the angle is in the range of -4° to +4°, preferably in the range of -2° to +2°, it is possible to operate without substantially affecting the resistance at the time of insertion, which is particularly preferable. Is.
Further, for the same purpose, as the protrusion, a protrusion structure, a depression structure, a hole structure or the like in the protrusion or the valley is also acceptable as long as it does not substantially affect the resistance or the operability when inserting the fish body. It

As the fish deboning tool according to the present invention, it is preferable to use a structure in which the repeating structure of the protruding portion and the valley portion which is the tip portion and the hollow tube main body are molded or fixed as an integral structure. It is preferable that the tip structure according to the present invention and the hollow tube body are integrally molded.
In addition, as the fish body deboning tool according to the present invention, it is also possible to use a structure body in which the entire distal end portion having the repeating structure is detachable. It is also possible to make each projecting part a detachable structure. In the case of the aspect, the tip portion may drop off due to resistance during insertion into and withdrawal from the fish body, and a step may not be substantially generated between the connection portion and the joint between the tip structure and the hollow tube. It is preferable to employ a means for firmly connecting the outer shape and the inner shape of the two so that they are substantially the same.

It is preferable that the distal end portion of the hollow tube according to the present invention is made of the same material as that of the hollow pipe main body (a portion other than the distal end portion). Further, it is possible to adopt a mode in which the protruding portion and the hollow tube main body are manufactured by separate materials and are assembled and manufactured. As an example, it is possible to adopt a mode in which the tip structure such as the protruding portion is formed of a material such as metal, the hollow tube body is separately formed of transparent resin, and the both are combined to be an assembled fish body deboning tool. ..

Rear end region The fish core deboning tool according to the present invention preferably has an opening at the rear end (4) which is the end opposite to the front end. The opening (41) at the rear end may have an opening structure provided with an air hole for letting air escape at the time of insertion, but is preferably hollow to avoid pressurization at the time of insertion due to extra air resistance. It is preferable that the structure is integral with the tube wall of the tube.
The region (42) on the rear end side of the hollow tube main body can use the region on the rear end side of the hollow pipe main body as a grip portion during the insertion operation.

Other Structures As the fish core deboning tool according to the present invention, as long as it does not substantially impair the operational effects provided by the above-described structures, etc., the device includes features other than the technical features related to the structures and materials described above. Is also possible.
For example, as a fish bone deboning tool according to the present invention, a gripping part such as a grip, a mooring part for mooring, a stopper, etc., in a shape or position that does not increase resistance during insertion into and withdrawal from the fish. It is also possible to make it a structure provided with an engagement locking part and the like. For example, if the structure is arranged in parallel with the tube wall of the rear end portion without causing a step or the like, the groove structure for the tube wall of the hollow tube, the hole structure for the tube wall of the hollow tube, etc. It is possible to arrange the desired structure.
Further, as a structure in which two or more hollow tube main bodies (2) are attachable/detachable, a structure in which the total length of the tube can be adjusted according to the size of the fish can be used. In the case of the aspect, the tip portion does not drop off due to resistance during insertion into and removal from the fish body, and there is substantially no step between the tip structure and the connection or joint between the hollow tubes. In addition, it is preferable to adopt a means for firmly connecting the outer shape and the inner shape of the two so that they are substantially the same.
It is also possible to adopt a form in which a protective member such as a cab for protecting the tip portion, a fixture-like structural member for protecting the opening portion, and the like are combined.
In addition, after the withdrawal step, a rod-shaped body for taking out the middle bones from the hollow tube, or a kit in which the inside of the hollow tube is combined with a cleaning rod-shaped body (handle long brush, rod with extra fine sponge, etc.) after use It can also be in the form.

Further, in the present invention, the above-mentioned deboning tool for fish bodies can be used as a member for fish body processing equipment or the like used in the field of fishery processing or food processing. That is, in the present invention, it is possible to provide a fish body processing device for medium bone removal, which is provided with the above-mentioned medium bone remover as a member.
A fish body processing apparatus according to the present invention has a structure in which the above-described fish body middle deboning tool is mounted as a member, and is capable of automatically, semi-automatically, or efficiently executing a middle body deboning process from a fish body. Any device can be used as long as the device is equipped with. For example, as an example of the fish body processing device according to the present invention, i) a fish body fixing portion for fixing and supporting the fish body, ii) a member fixing portion for connecting and fixing the above-mentioned fish body deboning tool, and iii) the above i) A means for enabling linear movement or sliding of the fish body fixing part described in (1) and/or the member fixing part described in ii) above, wherein the cross section of the fish body fixed by the movement of An example of such a device is a device provided with a moving unit that enables insertion and extraction.
Further, according to the present invention, it is possible to provide a fish body processing device for medium boning, which is equipped with a means for attaching/detaching the medium fish boning tool, and is provided with the medium fish boning tool as a detachable member.

2. In the present invention, a method for producing a medium-boned fish body is described. By using the fish body deboning tool described in (1), it is possible to manufacture a deboned fish body with skin, in which the fish meat in the deboned portion is beautiful, by a quick and simple operation.
In the present invention, the skeletal structure to be removed by the fish body deboning tool is “medium bone”. Here, the "metabone" in the present specification refers to a hard skeletal structure of the vertebra and its periphery (see FIG. 21). With the method according to the present invention, it is possible to extremely easily perform the deboning operation of the middle bones, which hinders the cooking and processing of fish.
In a preferred embodiment of the present invention, depending on the species of the fish, small bones such as ribs that expand along with the vertebral bone along with the vertebral bone and are embedded in the fish meat are stored in the hollow tube so as to be folded and removed. It is also possible. In the present specification, the term “ribs and the like” is used as a term including not only ribs attached to the vertebrae on the ventral side but also vertebrae attached to the vertebrae on the dorsal side.

[Target fish species]
In the method for producing a medium-water dewatering fish body according to the present invention, by the effect of the structure and the like of the medium-water bone-removing tool, as long as the size of the medium-water water-removing tool and the fish body size match, in principle, medium-water dewatering is performed for all fish species. It is possible to do.

The target fish species of the method according to the present invention is not limited to the method of targeting a fish body of a specific fish species in view of the principle of the deboning tool in the fish body. However, considering practical work, it is preferable to use a small fish body having a certain fish body size as a target. That is, it is preferable to use a fish body of a fish species belonging to a small fish or a young fish body of a fish species belonging to a medium-sized fish or a large fish as a target of the medium deboning treatment.

As the size of the fish body to be deboned in the method according to the present invention, for example, a fish body having a total length of 10 to 45 cm, preferably 15 to 35 cm, and more preferably 20 to 30 cm is suitable.
When the size of the fish body is large, the method according to the present invention can be applied to a fish body cut into two or more pieces in a direction in which the cross section of the midbone can be visually recognized in the body portion. Further, when using a fish body of a fish species belonging to a medium-sized fish or a large fish as a target of the method according to the present invention, it is preferable to target a small individual or a young individual.

As a target fish species of the method according to the present invention, more preferably, a fish species belonging to a small fish having a certain property, particularly a fish species belonging to a marine small fish in terms of suitable utilization of marine resources. Is preferred. For example, as a small fish species to which the method according to the present invention is preferably applied, one having the following characteristics is preferable.

i) As a target of the method according to the present invention, it is preferable to target a small fish species of a certain size or more in which it is difficult to eat the vertebra as it is. Here, as the target fish species, a fish species having a total length of 10 to 45 cm, preferably 15 to 35 cm, more preferably 20 to 30 cm is suitable. In the method according to the present invention, the fish body from which the head and caudal fins have been removed is targeted for processing. Therefore, the actual size of the fish body when performing the deboning operation is smaller than the above total length.
In the method according to the present invention, in consideration of the efficiency of the deboning work, the yield and the residual rate of the fish meat, the size of the deboning tool in the fish is adjusted so as to match the size of the fish of the fish species described in paragraph 1. It is suitable to carry out the above-mentioned range appropriately.

ii) Further, as a target of the method according to the present invention, a fish species in which the fish meat is soft and the bone and the fish meat are loosely bound is preferable. In the fish body of the fish species having the property, in addition to easily performing the insertion operation of the hollow tube in the following step, the fish body is hard to be crushed even after the hollow tube is pulled out, and the fish body with a clean skin is obtained. It is suitable because it can be produced.
Here, in order to make the fish meat of the fish body soft, it is preferable that the frozen fish is thawed. Since the frozen and thawed fish body is soft, it is preferable in that it is easy to perform the deboning treatment according to the present invention and a beautiful skinned fish body can be produced.

iii) Further, as a target of the method according to the present invention, a fish species having small internal organs relative to the amount of fish meat is suitable. When a fish body belonging to a fish species having the property is used, the edible portion of the fish body after the deboning treatment is increased, which is preferable.

iv) Furthermore, as a target of the method according to the present invention, fish species having scales that do not substantially affect the taste by processing or cooking are preferable. More preferably, fish species with fine scales are suitable. A fish species having such properties is preferable because the fish body with deboned skin produced through the following steps can be easily used as a food material.

v) Furthermore, as a target of the method according to the present invention, a fish species having a fish body shape close to a spindle shape or a cylindrical shape is preferable. In the fish species having the above properties, the fish body with the deboned skin produced through the following steps has a good appearance, and is suitable from the viewpoint of utilization for food use utilizing the shape of the fish body. Examples of the fish species having such properties include Yamatokamas, Akakamas, sardines, mackerels, Japanese horse mackerel, and the like.

As a target of the method according to the present invention, in view of the characteristics described in the above i to v), it is particularly preferable to target a small marine fish such as Yamatokamas, Akakamas, or related species thereof. Is. It is also preferable to target sardine, mackerel, horse mackerel, Japanese horse mackerel, saury, sayori, or closely related species thereof.

[Medium boning process]
The method for producing a medium-boned fish body according to the present invention is described in the above paragraph 1. The method is characterized in that the following steps are performed using the fish body deboning tool described in.

Inserting Step The method for producing a medium-boned fish body according to the present invention includes:
(Step 1) With respect to the fish body from which the head and caudal fins have been removed or substantially removed, a tip portion of the fish body inside deboning tool is placed in a hollow tube of the fish body inside deboning tool from the cross-sectional direction of the fish body. The method includes the step of inserting so as to be stored in.

It is preferable to use fresh fish or raw fish as the target fish bodies for the medium deboning treatment according to the present invention. Further, a fish body in a refrigerated state or a fish body in a state of being thawed after freezing can be preferably used. In particular, a fish body that has been thawed after freezing is suitable because the meat of the fish meat is soft and denatured and is suitable for deboning.

In the present invention, it is preferable to use a "fish body from which the head and caudal fins have been removed" from a normal fish body as the state of the fish body to be subjected to the medium deboning treatment. Here, the usual treatment for removing the head and tail fins from the fish body can be performed by a cutting treatment using a knife such as a cutting knife. In addition, when the head and tail fins are removed in advance, or when a fish body corresponding to this is prepared or obtained, the prepared fish body can be used. Further, if desired, an operation of removing the internal organs or the like may be performed.
Here, as the fish body with the head removed, it is preferable that the head is removed so that the cross section of the middle bone is visible. Here, in the present invention, in order to remove excess bone in the vicinity of the head, a part of the head and the torso (eg, pectoral fin) is cut off by performing a cutting process or the like on a part near the torso part on the head side. It is preferable to use a fish body from which is removed. Further, it is preferable that the fish body is cut in a direction perpendicular or substantially perpendicular to the caudal-tail axis.
Further, as the fish body from which the caudal fin has been removed, it is preferable that the caudal fin is removed and the cross section of the middle bone is visible. Here, in the present invention, in consideration of the fact that the body is thin and the middle bones have a wide structure in the vicinity of the boundary between the caudal fin and the torso, a cutting process or the like is performed on the body part of the caudal fin side, and part of the caudal fin and the body It is preferable to use a fish body from which a portion including (for example, several cm from the boundary with the caudal fin) is removed. Further, it is preferable that the fish body is cut in a direction perpendicular or substantially perpendicular to the caudal-tail axis.

Further, in the present invention, a fish body from which the head and caudal fins have been substantially removed can be the target of the mid-boning operation. Here, "substantially removed" means that the head and caudal fins are not completely removed, but the cross section of the middle bone can be visually confirmed by an operation such as partial cutting or excision, and is related to the fish middle bone removing device. Indicates the state where the tip can be inserted.

As a target fish body according to the present invention, the fish body from which the head and caudal fins have been removed is further cut into two or more pieces in a direction in which the mid-bone cross section can be visually confirmed, and the divided fish body after the cutting is subjected to mid-bone removal. It can be a fish body. Here, the operation of “cutting into two or more” can be performed in advance before the head and tail fins are removed. Furthermore, it is also possible to perform it together with the head and caudal fin removal processing. It is also possible to carry out separately after removing the head and tail fins.
The cutting process is an effective process when processing an individual having a large size or a fish species having an elongated fish body.
The number of cuts in the treatment is not particularly limited, but it is desirable to cut the fish body to preferably about 2 to 3, more preferably about 2. For example, in the case of cutting into two, it is preferable to cut near the latter half of the first dorsal fin. In addition, when the major axis length of the hollow tube of the device according to the present invention can cover the fish body size, it is preferable to remove the inner bone without performing unnecessary cutting treatment so that the attractiveness of producing the fish body with skin is not reduced by half. It is desirable to perform processing.

In the method for producing a fish body with deboned bones according to the present invention, an operation of inserting the distal end portion of the hollow tube is performed from the cross-sectional direction of the fish body so that the hollow bones are stored in the hollow tube of the deboning tool for the fish body body. Here, the cross-sectional direction of the fish body refers to the direction of the cut surface when the fish body is cut along a plane perpendicular to the caudal-tail axis. Also, when the fish body is cut at an angle from the plane perpendicular to the head-tail axis, it refers to the direction in which the actual vertical plane faces instead of the cut plane.
A specific operation is to insert the hollow bone into the inside of the opening (33) at the tip of the fish mid-bone deboning tool so that the cross-section of the mid-bone enters, and then insert a hollow tube along the mid-bone to insert the head-tail axis. It is possible to perform the insertion step by penetrating the fish body in the direction. A state in which the binding between the middle bone and the fish meat is cut off is realized by the penetration by the insertion operation.
Here, the insertion operation of the fish core deboning tool can be inserted along the mid bone without requiring excessive pressure due to the effect of the structure of the fish core deboning tool and the like. Can be stored inside the hollow tube. That is, in the insertion operation, it is preferable that the insertion direction of the distal end of the hollow tube does not deviate from the middle bone without applying excessive pressure. At the time of the insertion operation, the tip is naturally rotated to a position where a rib or the like is caught in the valley portion, so that stable insertion can be performed.

In the present invention, the skeletal structure to be removed by the fish core deboning tool is the mid bone. In the insertion operation, it is possible to store the vertebral bone, which is the middle bone, and the hard skeletal structure around the vertebra in the hollow tube. The insertion operation can be performed from either the head side or the tail side of the fish body from which the head and tail fins have been removed.
According to the present invention, depending on the type of fish in the insertion operation, it is also possible to store the ribs and the like associated with the vertebrae together with the middle bones so as to be folded. In the case of this aspect, because it is possible to store while folding the associated ribs and the like due to the relationship with the direction of development of the ribs and the like, in most fish species, insertion processing from the head side in terms of its skeletal structure Is preferably performed. In addition, for some fish species such as saury, it is preferable to insert a hollow tube from the cross section on the tail side due to the relationship between its skeletal structure and internal organs, but there are fish species that are suitable for insertion. It is possible to perform the mid-bone removal process according to the present invention by changing the position to the tail side or performing a cutting process of the internal organs.

It is preferable that the insertion operation is performed until the tip of the hollow tube penetrates the fish body, and the middle bones existing in the fish body inside the hollow tube are stored in the hollow tube. Here, since the middle bone has a wide skeletal structure in which the middle bone is integrated with ribs regardless of the fish species, in the insertion operation, it is stored in the hollow tube by cutting the binding with fish meat near the tail. Alternatively, it is preferable that the insertion operation is performed by pushing the tip of the hollow tube so as to push it out from the through hole of the fish body.

Extraction Step In the method according to the present invention, after the insertion step according to the above, the operation of extracting the hollow bone that has been inserted together with the hollow bone is performed.
That is, the method for producing a deboned fish body according to the present invention comprises:
(Step 2) A method including a step of removing the middle bones stored in the hollow tube from the fish body by extracting the medium body bone removing tool.

The withdrawing operation includes i) by further advancing the inserted hollow tube in the forward direction of the insertion direction, and pulling out the hollow tube that has come out from the through hole of the fish body by applying a pulling force. It is possible to remove the middle bone stored in the hollow tube together with the hollow tube from the fish body. In the extracting operation, since the binding between the middle bones and the fish meat has already been cut during the inserting operation, the hollow tube can be extracted from the fish body without undue force.
In addition, as the extracting operation according to the present invention, ii) the hollow tube is extracted by applying a force to pull the inserted hollow tube in a direction opposite to the inserting direction, and the middle bone stored in the hollow tube is removed from the fish body. It is also possible to remove it.
The extracting operation according to the present invention is performed by extracting the hollow tube that has penetrated in the insertion direction and the forward direction described in i) above, in order to realize the medium bone removing operation in a state where the fish meat is clean. It is preferable to carry out.

Production efficiency In the method according to the present invention, the above-mentioned insertion and withdrawal operations can be performed remarkably quickly and easily, and the yield of the success rate is extremely high and short even when a person who is unfamiliar with the operation is performed. It was possible to complete the operation in time. In particular, a skilled person can execute a series of steps in just a few seconds.
That is, in the method according to the present invention, the above paragraph 1. Since the medium boning tool itself described in (4) is an inexpensive device, it is possible to mass-produce the boning fish without introducing an expensive equipment.
In addition, in the method according to the present invention, when the material of the medium deboning tool is a material having transparency, it is possible to confirm the work of insertion and withdrawal, which is preferable from the viewpoint of improving operability.

Other steps and treatments The method according to the present invention is a method characterized by performing the above-mentioned insertion step and withdrawal step. As long as it does not have an adverse effect on the deboned fish, it does not prevent the processing steps or treatments other than the above.
In addition, with respect to the inside-bone removing tool after the extracting step, it is possible to reuse the inside-bones stored in the hollow tube as many times as necessary by washing the inside-bone to remove it from the hollow tube. In the case of the cleaning, when the medium deboning tool is made of a transparent material, it is preferable because it can prevent forgetting the cleaning after use and the cleaning effect can be easily confirmed.

[Produced medium watered fish]
In the method according to the present invention, by going through the above-mentioned steps, the fish meat is turned over like the technique related to the conventional two-faced spatula-like body deboning tool (basic structure of the device according to Patent Document 2). Without this, it is possible to manufacture a fish body with a deboned skin in which the edible portion of the fish meat is in a beautiful state. Since the medium bone-removed fish produced using this technique is a bone-removed fish that has never been maintained with the shape of the fish kept clean, it can be provided as a new food material, and can be used for a wide range of cooking or processing applications of fish. It is available.
That is, the deboned fish obtained by the above production method can be used in a cooking method using the fish. In addition, the medium-boned fish body obtained by the above-mentioned production method can be used for a method for producing a processed food using the fish body.

Here, as an example of cooking or processing, for example, a mode of producing a cooked product or a processed food obtained by subjecting the deboned fish produced using the technique to a process such as freezing, heating, and frying. In addition, a mode in which a cooked product or a processed food in which other ingredients, seasonings, or the like are added or inserted in the portion where the inner core is removed is possible. Further, it is also possible to adopt a mode in which a cooked product or a processed food is formed by sticking a bar or the like, which serves as a gripping part at the time of eating, into the part where the inner bone is removed.

Hereinafter, the present invention will be described with reference to examples, but the scope of the present invention is not limited thereto. Moreover, the code numbers in the following description mean the code numbers used in the drawings.

[Example 1] "Manufacture and performance evaluation of a fish deboning tool"
As an aspect of the fish-bone deboning device according to the present invention, a fish-bone deboning device having the structure shown in FIGS. 1 and 2 was manufactured and its performance was evaluated.

(1) "Manufacture of bone remover for fish"
Using the hollow tube, the fish dewatering device according to this example was manufactured.
The material of the hollow tube (2) constituting the fish deboning tool (1) in this embodiment is transparent polycarbonate resin, and the shape of the hollow tube is a straight tube having a circular cross section. It was tubular. The outer diameter of the hollow tube was φ10 mm, the inner diameter and the tube wall thickness were the sizes described in Table 1, and the total tube length of the hollow tube including the tip portion (3) was 150 mm in terms of the major axis length.
The front end of the hollow tube was an opening (33) in which the pipe shape was opened as it was, and the rear end (4) which was the opposite end was also an opening (41) in which the pipe shape was opened as it was. Further, the rear end side (42) of the hollow tube main body is a region that can be used as a gripping part during insertion.

A tip portion (3) was formed by notch molding at one end of a hollow tube constituting the fish deboning tool according to this example. The tip portion has a repeating structure of a mountain-shaped protruding portion (31) and a valley portion (32) from the tube wall at one end of the hollow tube, and has a structure in which four protruding portions and four valley portions are arranged. Further, the outer side surface and the inner side surface of the projecting portion are arranged in parallel with the wall surface of the hollow tube body without changing the curvature and the angle. The protrusions are arranged so that they are evenly arranged when viewed from the front. Similarly, the valleys are arranged so that they are evenly arranged at point-symmetrical positions when viewed from the tip direction.
For the sake of safety, the shape of the protrusions is a truncated mountain shape with the tip being slightly decapitated, and the four protrusions have the same shape and size. The distance from the tip of the protruding portion to the cross section of the hollow tube was made equal. The troughs were formed in a shallow V-shape, and the four troughs had the same shape and size. The distance from the bottom of the trough to the cross section of the hollow tube was equal, and the length from the tip of the protrusion to the bottom of the trough was 3 mm.

FIG. 3 shows a photographic image of the fish deboning tool (Products 1-1 to 1-3) produced above. The difference between these manufactured products is that they were manufactured using hollow tubes having wall thicknesses of 0.3 mm, 0.4 mm, and 0.5 mm, respectively. In addition, the characteristics of the manufactured products are summarized in Table 1.

(2) "Performance test: deboning of fish"
The performance of the thus-fabricated fish body deboning tool was evaluated by deboning the fish body.
Using the manufactured products 1-1 to 1-3 manufactured in (1) above, deboning treatment was performed on the fish body, and the operability and the fish body after deboning were evaluated. 4 to 6 show photographic images of each process of the deboning process according to the test. The evaluation results are shown in Table 2.

A thawed Yamatokamas having an average total length of 22 cm and an average median bone diameter of about 5 mm was prepared, and the head and tail fins were cut using a cutting knife (FIG. 4). Here, the head was amputated near the back of the pectoral fin so that the skeleton bones did not remain. The caudal fin was cut at a slightly thicker part about 2 cm closer to the body than the boundary between the caudal fin and the body, considering the structure near the tail where the body is thin and the middle bones are wide.
Hold the fish body from which the head and caudal fins have been removed so that the cut surface on the head side can be visually recognized, and in the fish body produced above from the cut surface direction on the head side (direction of the head-tail axis of the fish body) Insert the inside of the tip opening (33) of the deboning tool (Products 1-1 to 1-3) so that the cross section of the midbone fits, and insert a hollow tube along the midbone as it is. The fish was penetrated in the tail axis direction (Fig. 5). In the insertion step, it was possible to achieve penetration with little force. After the penetration, the entire hollow tube was extracted from the through hole of the fish body by performing the extraction operation in the forward direction as it was.
After withdrawing the hollow tube from the fish body, the mid bone stored in the hollow tube was taken out and observed, and it was confirmed that the ribs, vertebrae, etc. were folded and taken out together with the mid bone. The mid bone of the caudal part is wider than other parts and has a structure in which the ribs and vertebrae further expand vertically, and is pushed out from the tip of the tip by the pressing in the insertion operation and removed outside the fish body. Was confirmed (Fig. 6).

As a result of the performance test relating to the medium deboning treatment, by using the manufactured products 1-1 to 1-3, it is possible to cleanly remove the middle bones and ribs from the fish body having a medium bone diameter of 5 mm. Was confirmed.
Further, when a continuous test of 600 fish was further conducted using the manufactured product in the same manner as described above, it was possible to easily achieve continuous large-scale deboning of all fish bodies. Here, the time required for the insertion and withdrawal processing after holding the fish body in the hand was only about 5 to 10 seconds per fish. The insertion/removal operation itself could be performed in about 2 to 3 seconds.
From the above results, it was shown that it is possible to extremely efficiently perform the production of the medium-bone-removed fish body by using the medium-bone-removed fish tool according to the present invention. That is, when using the fish mid-bone deboning tool according to the present invention, it is possible to perform an insertion process into the fish without requiring a strong force, and the suppleness of the hollow tube allows the mid-bone along the mid-bone to be processed. It has been shown that the fish can be stored and the ribs and other parts can be folded and stored together to produce a fish body with beautiful skin. From these findings, it was demonstrated that the fish dewatering device according to the present invention is a device having a structure that exhibits outstanding operability and stability.

(3) “Performance test: Push force measurement test”
The pushing force required for the fish body inserting operation was compared and evaluated with respect to the fish body deboning tool manufactured above.

Thawed Yamatokamas (average median bone diameter: about 5 mm) from which the head and caudal fins have been removed using the fish deboning tool (Products 1-1 to 1-3) produced in (1) above Then, the deboning process was performed on the fish and the pushing force required when the fish was inserted from the cross section on the head side was measured. The pushing force at the time of insertion was measured using a small test force measuring instrument, SHIMAZU EZ TEST (manufactured by Shimadzu Corporation). The basic operation of the deboning treatment from the fish body was performed in the same manner as the method described in (2) above. The results are shown in Fig. 7.

As a result, it is shown that the test force value indicating the pressing force required at the time of insertion is about 15 N at maximum regardless of which of the manufactured products 1-1 to 1-3 is used for the insertion operation. It was Also, the test force value shows a maximum value at a position where it rises sharply with the insertion operation from the cross section of the head side and near the contact with ribs, and thereafter, at the constant test force value on the tail side. It was shown that it reached to and penetrated.
From the above results, it is shown that the deboning tool for fish cores according to the present invention can perform the deboning operation for fish cores by only applying a small pressing force (about 15N at maximum in the case of defrosted barracuda). Was done. In addition, it was shown that during the insertion operation, even after the contact with the ribs etc., the penetration can be achieved with a constant pushing force. In addition, the required pressing force does not change significantly when the wall thickness of the hollow tube is changed between 0.3 and 0.5 mm, and can be used satisfactorily with a small force. It was shown that.

[Test Example 1] "Examination of hollow tube size"
We investigated the size of the hollow tube that constitutes the deboning tool in the fish body. In addition, the said test example is a test performed using the prototype which is the pre-stage of a manufactured product for the purpose of grasping|ascertaining the relationship between the hollow tube size and fish size of the manufactured product which concerns on the said Example.

(1) "Examination of inner diameter and outer diameter"
A hollow hollow straight tube made of stainless steel having a tube wall thickness of 1 mm having outer and inner diameters shown in Table 3 was prepared. These tips were cut at an angle of 45° with respect to the long axis direction to obtain a tip structure for inserting a fish body. The produced deboning tools for fish bodies were designated as prototype 1-1 to prototype 1-5. As a basic shape of the prototype, a photograph image of the appearance of the prototype 1-3 (outer diameter φ10 mm, inner diameter φ8 mm, tube thickness 1 mm) is shown in FIG.
Using the fish core deboning tool (prototype 1-1 to prototype 1-5) produced above, a decapsulated yamatokamas (average median bone diameter: about 5 mm) from which the head and tail fins have been removed went. The basic operation of the deboning process from the fish body was performed in the same manner as in the method described in Example 1. The results are shown in Table 3.

As a result, it was confirmed that by using the prototype 1-2 to the prototype 1-5, it is possible to store the middle bone in the hollow tube by the insertion operation into the fish body. That is, a hollow tube having an outer diameter of 9 mm and an inner diameter of 7 mm (prototype 1-2) to a hollow tube having an outer diameter of 12 mm and an inner diameter of 10 mm (prototype 1-5) was used for a fish body having a medium bone diameter of 5 mm. In this case, it was confirmed that the middle bone could be stored in the hollow tube.
When a hollow tube (prototype 1-5) having an outer diameter of 12 mm and an inner diameter of 10 mm was used for a fish body having a medium bone diameter of 5 mm, the outer diameter was too large and the loss of fish meat was rather large. When a hollow tube (prototype 1-1) having an outer diameter of 8 mm and an inner diameter of 6 mm was used for a fish body having a medium bone diameter of 5 mm, the inner bone was too thin to store the medium bone.
Considering both the outer diameter and the inner diameter, a hollow tube with an outer diameter of 10 mm and an inner diameter of 8 mm (prototype 1-3) is the optimum size for the fish body with a medium bone diameter of 5 mm in this example. Was accepted.

From the above results, as the fish core deboning tool using a hollow tube, it is preferable to use a hollow tube having an inner diameter φ of more than +1 mm as the inner diameter φ of the hollow tube, preferably +2 mm or more. It has been shown to be suitable. Specifically, it has been shown that it is preferable to use a hollow tube having an inner diameter of more than 6 mm, preferably an inner diameter of 7 mm or more for a fish body having a medium bone diameter of 5 mm.
Further, as the outer diameter φ of the hollow tube, it has been shown that it is preferable to use a hollow tube having an outer diameter of less than +7 mm, preferably +6 mm or less with respect to the medial bone diameter. More specifically, it has been shown that it is preferable to use a hollow tube having an outer diameter of less than 12 mm, preferably an outer diameter of 11 mm or less for a fish body having a medium bone diameter of 5 mm.
In this respect, regarding the inner diameter and the outer diameter size of the hollow tube, it was considered preferable to appropriately adjust the hollow tube size according to the diameter of the medium bone of the fish body to be treated.

However, when these prototypes were used, the operability and stability during insertion were not good for any of the prototypes due to the influence of the tip shape.

(2) "Examination of pipe wall thickness"
A hollow straight tube made of stainless steel having the tube wall thickness shown in Table 4 and an outer diameter of 10 mm was prepared. These tips were cut at an angle of 45° with respect to the long axis direction to obtain a tip structure for inserting a fish body. The manufactured fish deboning tools were designated as prototype 1-6 to prototype 1-8. The basic shape of the prototype is the same type as the prototype according to (1) above.
Using the fish bone demining tool (Prototype 1-6 to Prototype 1-8) produced above, the headed and tail fins were removed in the same manner as in (1) above. ) Was subjected to a medium deboning treatment. The results are shown in Table 4.

As a result, it was confirmed that by using the hollow tubes of Prototype 1-6 to Prototype 1-8, it is possible to store the middle bone in the hollow tube by inserting the hollow tube into the fish body. That is, it was confirmed that when a hollow tube having a tube wall thickness of 0.05 mm, 0.1 mm, or 1 mm was used, it was possible to store the middle bone in the hollow tube.
From the above results, as the fish deboning tool using a hollow tube, the fish body according to the present invention can be used as long as the strength of the material can be maintained even when the wall thickness of the hollow tube is reduced to 0.05 mm. It was confirmed that it can be used as a hollow tube of a medium deboning tool.

However, when these prototypes were used, the operability and stability during insertion were not good for any of the prototypes due to the influence of the tip shape.

(3) "Study on the content of fish meat"
Using the fish core deboning tool (prototype 1-3) having an outer diameter of 10 mm, an inner diameter of 8 mm, and a tube wall thickness of 1 mm, which was good as the storage size of the middle bones in the examination related to (1) above, the middle bone removal treatment was performed. The effect of the fish on the weight of fish was investigated.
The head and caudal fins are removed from the landed Yamatokamas, and the fish bodies from which the heads and caudal fins have been removed are subjected to mid-bone dewatering processing using the above-mentioned fish mid-bone deboning tool (prototype 1-3). It was The basic operation of the deboning process from the fish body was performed in the same manner as in the method described in Example 1. The average median bone diameter in the fish population used for the treatment was 5.1 mm, the average total length was 26.4 cm, and the body weight was 123.5 g.
The weight residual rate was calculated from the measurement results of the weight of the fish before and after the deboning treatment, and the residual fish meat was evaluated. The results are shown in Table 5.

As a result, in the case of performing the deboning treatment using the hollow tube size of the prototype 1-3, the fish body before the deboning treatment (the fish body from which the inedible parts such as the head and the caudal fin were removed) was about 90. It showed a weight residual ratio of ˜91%. Considering that all the fish bodies after the deboning treatment are edible parts, it can be evaluated that the fish meat content contained in the treated fish bodies produced in this example has a high value.
From these results, it is shown that a fish body with a medium bone-removing skin, which has a high content of fish meat and is suitable as a food material, can be produced by using a fish body medium-water removing tool composed of a hollow tube of an appropriate size for the fish body size. It was

However, in the processing using the prototype, the operability and stability during insertion were poor due to the influence of the tip shape.

[Test Example 2] "Study on Prior Art: Comparative Example"
An instrument having the same basic configuration as the fish-bone deboning device having the two facing spatula-shaped bodies as the prior art was manufactured and its performance was evaluated.

About a spatula that is a metal oblong plate (long axis length 150 mm, short axis length 10 mm, plate thickness 1 mm), two of them are fixed to a wooden plate body that is a grip portion, and a width of 8 mm is set. A device was manufactured in which the plate surfaces were arranged and fixed in parallel so that the plate surfaces face each other at intervals (Fig. 9). The fish deboning tool was used as Comparative product 2-1.

Using the fish body deboning tool (Comparative Product 2-1) produced above, the performance of the landed Yamatokamas (average median bone diameter: about 5 mm) from which the head and caudal fins were removed was evaluated by performing medial bone removal processing. did. The results are shown in Table 6.
As a result, the fish deboning tool in the fish body (Comparative Product 2-1) is an instrument having a structure in which the insertion operation into the fish body itself is extremely difficult, and it was necessary to insert the fish body while fixing it straight (Fig. 9C). In addition, when pulling out after insertion, a large force is required because it is necessary to forcibly pull out the bound state of the middle bone and the fish meat, and the operability is extremely poor. After the middle bones were removed, the fish body was pulled up because the binding state was pulled forcibly, and ribs etc. were often left.
As the above results show, the prior art two-faced spatula-shaped fish body medium deboning tool has the principle of pulling out with the state where the middle bone is sandwiched and the meat and the bone are bound. Since it is a technology that employs a structure, in principle it was recognized as a technology that cannot produce a clean deboned fish body. Furthermore, a large force was required at the time of insertion and removal, and the operability was extremely poor.

[Example 2] "Study on tip shape"
As another embodiment of the fish-bone deboning tool according to the present invention, a fish-bone deboner having various structures with different tip shapes was manufactured and its performance was evaluated.

Using the hollow tubes having the materials and sizes shown in Table 7, fish bone demining tools having the shapes and numbers of the tip portions shown in Table 7 were manufactured. As for the shape of the tip portion (3), one end of the hollow tube is formed by cut molding, and a protrusion portion (31) of a mountain shape or a truncated mountain shape and a V-shaped or substantially U-shaped valley portion ( 32) is repeated, and the protrusions are arranged so that they are evenly arranged when viewed from the front end direction. The outer surface and the inner surface of the projecting portion are arranged so as to be parallel to the wall of the hollow tube without changing the curvature and the angle. Further, the length from the tip of the protrusion to the bottom of the valley was 3 mm.
The manufactured deboning tools for fish bodies were referred to as manufactured products 2-1 to 2-6. Photographs of the appearance of the manufactured product are shown in FIGS.

Using the fish body deboning tool (Products 2-1 to 2-6) produced above, decompressed defrosted Yamatokamas (average median bone diameter: about 5 mm) from which the head and caudal fins have been removed went. The basic operation of the deboning treatment from the fish body was performed in the same manner as in the method described in Example 1. The results are shown in Tables 7 and 8.

As a result, it was confirmed that it is possible to cleanly remove the middle bones and ribs from the fish body by using the manufactured products 2-1 to 2-6. That is, it was confirmed that even in the form in which the number of protruding portions at the tip end portion is increased to 4 or more, a good middle deboning treatment can be realized. It was also confirmed that variations in the shape of the protrusion and the valley are possible. The number and arrangement of the protruding parts should be symmetrical when viewed from the tip, so that the hollow tube will automatically rotate during insertion due to the contact between the ribs and the troughs, improving the stability of the insertion operation. Was recognized as
It is considered that the outer diameter and other sizes of the hollow tube should be appropriately adjusted according to the size of the fish species to be treated, as in the result of the examination in Test Example 1.

[Example 3] "Example of application to various small fishes"
The applicability of the fish deboning tool according to the present invention was examined by deboning various fish species belonging to small fish.

Using the product 1-3 (transparent polycarbonate, outer diameter φ10 mm, inner diameter φ9 mm, tube wall thickness 0.5 mm, number of protrusions 4) manufactured in Example 1, for fish bodies of each fish species shown in Table 9. After the deboning process, the operability and the fish body after deboning were evaluated. As the fish species used in the test, the fish species shown in Table 9, which is a small marine fish and is a low-priced fish or a low-utilization fish, was selected in consideration of improved utilization as a marine resource. The basic operation of the deboning treatment from the fish body was performed in the same manner as in Example 1 except that the hollow tube was inserted from the tail side only in the saury and the deboning treatment was performed.
13 to 19 show photographic images of the state after the medium deboning process according to the test. The evaluation results are shown in Table 9. In addition, the fish size in the table is a size indicating the entire length.

As a result, it is possible to perform medium deboning treatment on Yamatokamas (Sample 3-1) and Red Barracuda (Sample 3-2) which are particularly soft, and the resulting deboned fish body is also clean. A cylindrical fish body was obtained (see FIGS. 4 to 6 in Example 1).
In addition, a mackerel with a total length of 20 cm (sample 3-3), a mackerel with a total length of 30 cm (sample 3-4), a sardine with a total length of 21 cm (sample 3-5), a mackerel with a total length of 16 cm (sample 3-6), and a muroazi with a total length of 22 cm. With respect to (Sample 3-7) as well, it was possible to perform medium deboning treatment without any problem, and a fish body after deboning was also obtained (FIGS. 13 to 17).
Also, for the large thawed saury (Sample 3-8), it was necessary to cut into two at the center of the body due to the size of the hollow tube used in this example. It was possible to execute without problems. With respect to the small thawed saury (sample 3-9), it was possible to achieve the medium deboning treatment by a normal operation without cutting into two (FIGS. 18 and 19).
Incidentally, in the fish species used in the test in this example, it was preferable to insert a hollow tube from the cross section on the head side to perform deboning treatment except for saury, but in saury, the tail part It was preferable to insert a hollow tube from the cross section on the side and perform middle deboning treatment.

From the above results, it was shown that it is possible to obtain a suitable deboned fish body even when targeting various types of fish species used in the test of this example. That is, it was confirmed that the fish deboning tool according to the present invention can be suitably used for the deboning treatment of various fish species belonging to small marine fish.

[Example 4] "Production of processed food"
In the above-mentioned example, an application example to a processed food utilizing the characteristics of the fish body with skin that has been deboned inside was examined. A photograph image is shown in FIG. 20 for an application example to a processed food with a stick.

(1) "Save"
The fish body with deboned skin of Yamatokamas produced in Example 1 could be stored with little influence on freshness and flavor by washing with salt water and refrigerating. In addition, it could be stored for a long time by freezing.

(2) "Various processed foods"
The fish body with the deboned skin of Yamatokamas produced in Example 1 was cooked by taking advantage of the characteristics of the fish body. Since the fish can be cooked without pretreatment for removing bones and labor, and can be eaten as it is at the time of eating, it can be easily used as a food material for tempura, fried food, fried chicken, etc. It was possible. In addition, a cooking method was also possible in which the hole portion of the fish body from which the inner bones were extracted was filled with other food materials, seasonings and the like.

(3) "Application to processed foods with sticks"
With respect to the fish body with dehulled skin of Yamatokamas produced in Example 1, the chopsticks were inserted into the hole portion from which the hollow bone was extracted from the tail side to process the fish body with a stick into a food material.
It was possible to process the fish with a stick into food such as fried-style food with clothes, fried-fried food and the like. A photographic image of an application example of the processed food with a stick is shown in FIG.
In the aspect of the processed food with a stick, it has been recognized that the inserted stick portion can function as a grip portion, in addition to the advantage that cooking can be performed without removing bones.

The present invention is expected to be widely used in fields such as fishery processing and the food and drink industry. In addition, it is expected to be utilized for effective use of fishery resources in areas where fisheries and fisheries processing are active and promotion of local industries. For example, when applied to small marine fish, it is expected to lead to the creation of new uses of marine resources.
In addition, since the utensil according to the present invention can be mass-produced at low cost and has high safety, it is expected to be widely used as a new domestic cooking utensil. Further, it is expected to be suitably used as a member of a fish body processing apparatus used in the field of fishery processing or food processing.

1. Bone removing tool in fish body 111. Product 1-1
112. Product 1-2
113. Product 1-3

121. Product 2-1
122. Product 2-2
123. Product 2-3
124. Product 2-4
125. Product 2-5
126. Product 2-6

2. Hollow tube (hollow tube body)
21. Hollow tube 2'. Prototype hollow tube (hollow tube body)

3. Tip 31. Projection 32. Tanibe 33. Opening 3'. Tip of prototype

4. Rear end 41. Opening 42. Rear end area

5. Fish body 51. Fish body without removing head and caudal fin (body)
52. Parts including the head 53. Part including caudal fin 54. Middle bone 55. Fish meat 56. Leather 57. Viscera 58. Ribs 59. Vertebra 60. Skeletal fish body

61. Fish body without the middle bones 62. Removed midrib 63. Head region of removed midbone 64. Caudal part of the removed midbone

71. Medium watered fish with rod 72. Processed food with sticks cooked in a fried style 73. Processed food with sticks cooked in a fried style

913. Prototype 1-3
921. Comparative product 2-1
91. Spatula 92. Spatula fixing part

M. Maximum test force

Claims (11)

A device which is or is provided with a hollow tube, wherein at least one end of the hollow tube is provided with a repeating structure of protrusions and valleys at least 4 in the number of protrusions at the tip of the pipe wall. A boning device in a fish body, which is characterized in that
The fish body deboning tool, wherein at least a part or all of the hollow tube is made of a transparent resin . The fish body deboning tool according to claim 1, wherein the hollow tube is a right circular tube having a circular cross section or a substantially circular cross section. The structure of the tip portion of the wall of the hollow tube is
(A-1) The projecting portion is arranged so as to be point-symmetrical, substantially point-symmetrical, line-symmetrical, or substantially line-symmetrical when viewed from the front end direction,
(A-2) The positions of the tips of the protrusions are equidistant or substantially equidistant to the cross section of the hollow tube,
The bone remover for fish body according to claim 1 or 2, characterized in that. The structure of the tip portion of the wall of the hollow tube is
(A-3) (i) The outer side surface and the inner side surface of the protrusion are arranged in parallel with the tube wall of the hollow tube without substantially changing the curvature and the angle, or (Ii) An angle formed by an outer tangent line and an inner tangent line in the long axis direction of the hollow tube on the outer side surface and the inner side surface of the protrusion and the long axis of the wall surface of the hollow tube is in a range of −10° to +10°. Arranged at an inner curvature and/or angle,
(A-4) The difference between the tip of the protrusion and the bottom of the valley is 1 mm or more,
The bone remover for fish body according to any one of claims 1 to 3, wherein The shape of the hollow tube is
(B-1) The longest cross-sectional distance of the inner shape is a value exceeding 4 mm,
(B-2) The maximum cross-sectional length of the outer shape is a value less than 14 mm,
(B-3) The tube wall thickness is 0.05 to 2 mm,
The deboning tool in a fish body according to any one of claims 1 to 4. The material forming the hollow tube is
When inserting the distal end of the hollow tube from the cross-sectional direction of the fish body from which the head and caudal fins have been substantially removed so that the midbone is stored in the hollow tube of the fish core deboning tool,
(C-1) A material having a strength such that the hollow tube is not destroyed by insertion, and
(C-2) A material that flexibly bends along the midbone along with insertion,
The fish body deboning tool according to any one of claims 1 to 5, which is constituted by: The shape of the tip of the protruding portion is a mountain shape with a vertex at the tip, a mountain shape with a rounded tip, a truncated mountain shape, a rounded truncated mountain shape, a wavy shape, a half The fish-bone deboning device according to any one of claims 1 to 7 , which has a circular shape, a rectangular shape, a rounded substantially rectangular shape, a trapezoidal shape, a rounded substantially trapezoidal shape, or a shape substantially corresponding to the shape. .. For the fish body with the head and caudal fin removed or substantially removed,
(Step 1) Insert the tip portion of the fish core deboning tool according to any one of claims 1 to 8 so that the mid bone is stored in the hollow tube of the fish core deboning tool from the cross-sectional direction of the fish body. Then
(Step 2) removing the middle bones stored in the hollow tube from the fish body by extracting the medium body bone removing tool.
A method for producing a medium-boned fish body, which is characterized in that The method according to claim 8 , wherein the fish body is a small fish body having a total length of 10 to 45 cm. Method for manufacturing a processed food using a boning fish in the claim 8 or obtained by the method according to 9. Claim 1-7 fish in with or as a removable member equipped with a boning device as member, fish processing equipment for medium watered according to any one of.