JP4813777B2 - Artificial nipples and baby bottles - Google Patents

Description

  The present invention relates to an artificial nipple and a sucker used by, for example, infants when breastfeeding.

The artificial nipple is attached to, for example, a baby bottle, and is used by infants and the like to drink milked milk, milk and the like contained in the baby bottle.
FIG. 10 is a schematic cross-sectional view of a conventional artificial nipple 1. As shown in FIG. 10, the artificial nipple 1 has a hollow portion A that is a portion into which milk or the like flows from a baby bottle or the like. And the nipple 1b, the nipple trunk | drum 1a, and the base part 1c are formed so that this hollow part A may be covered.
The teat 1b is provided with an opening 1d from which milk or the like is ejected. Such an artificial nipple 1 is attached to a baby bottle or the like (not shown), and an infant drinks breast milk or the like contained in the baby bottle via the artificial nipple 1.

  FIG. 11 is a schematic explanatory view showing a state in which an infant holds a nipple such as a mother. As shown in FIG. 11, the infant 20 actually performs a peristaltic movement of the tongue by adding the breasts of the mother and the like, and swallows the secreted breast milk. And “feeding start stage”. Each will be described below.

(Preparation stage)
As shown in FIG. 11, when the infant 20 catches the breast 30 such as a mother, first, the self upper lip 27a and the lower lip 27b are opened widely, and the own tongue 23 crosses the lower alveolar ridge 28b, and the lower lip 27b. It becomes a state that touches.
Next is the stage of adding the breast. At this time, the upper lip 27a and the lower lip 27b of the infant 20 are widely opened, and as shown in FIG. 11, for example, they are in close contact with the vicinity of the areola 31 of the breast 30 that is very soft and easily deformed, and are naturally outside, Open to turn up and down.
In addition, the infant 20 deforms the nipple tip 32 a of the mother or the like so as to extend to the deepest part of the baby sucking cavity 22 by the tongue 23. The extension of the infant 20 until the nipple tip 32a comes into contact with the baby's sucking cavity 22 is referred to as "first extension".

The nipple 32 that has been subjected to the primary extension in this manner is pressed against the upper lip 21, the upper alveolar ridge 28a, and the upper lip 27a of FIG. At this time, the entire nipple 32 is simultaneously wrapped with the inner side of its own cheek and the tongue 23.
In particular, the tongue 23 wraps the nipple 32 without a gap by deforming the nipple 32 that is wrapping. At this time, since the nipple 32 is a solid tissue body, breast milk can be moved to the tip 32a of the nipple without being crushed even if it is deformed.
This completes the feeding preparation stage.

(Staging start)
Next, the feeding start stage will be described. In this feeding start stage, first, a peristaltic movement by the tongue 23 is performed.
Specifically, in order to stimulate the breast 30, the areola 31, and the nipple 32 to promote the secretion of breast milk and to move the breast milk to the tip 32a of the nipple, the tongue 23 in FIG. Therefore, the bulge moves toward the base side of the tongue 23, and the bulge moves to a position slightly beyond the tip 32a of the nipple and further moves to the back of the oral cavity.

This state is shown in FIGS. 12A to 12C. 12 (a) to 12 (c), the bulge of the tongue 23 slightly exceeds the tip 32a of the nipple in relation to the tongue 23 and the tip 32a of the nipple in FIG. It is a general | schematic expansion explanatory drawing which shows the state which is carrying out.
By such movement of the bulge starting from the tip of the tongue 23, the nipple 32 starts to extend. As shown in FIG. 12A, the tip 32a of the nipple is a solid tissue body, and thus extends further toward the distal end side while being deformed to be slightly collapsed. And as shown in FIG.12 (b), the nipple 32 will be extended in connection with moving the swelling of the tongue 23 by a peristaltic motion just before breast milk squirts.
This is called “secondary extension” in order to distinguish it from the first extension described above. In this way, when the bulge on the tip side of the tongue 23 starts to move, the “secondary extension” is started.

  After this, it becomes a breast milk ejection stage. That is, the tongue 23 moves the bulge so that the mother's milk is drawn toward the tip 32a of the nipple by the second extension. Then, as shown in FIG. 12A, when the bulge of the tongue 23 reaches the tip of the nipple tip 32a by the peristaltic movement, the nipple tip 32a, the bulge of the tongue 23, and the back side of the oral cavity of the sucking cavity 22 A sealed space E is formed by a part of the pallet and the soft palate 24 in the back thereof.

Next, with the tongue 23 kept in contact with the soft palate 24, a further peristaltic movement is performed to move the bulge of the tongue 23 further back. Then, as shown in FIG.12 (b), the volume of the sealed space E becomes large and the sealed space E becomes a negative pressure.
When the sealed space E having negative pressure is formed in this way, the tip 32a of the nipple is drawn into the negative pressure space E and further extends. This extension completes the “second extension”.
Breast milk secreted by stimulation by the peristaltic movement of the tongue 23 and the negative pressure associated therewith spouts into the oral cavity of the infant 20, and the infant 20 releases the contact between the tongue 23 and the soft palate 24 as shown in FIG. Then, the sealed space E is opened, and the infant 20 swallows the ejected breast milk.
In this way, after the “first extension” is performed, the infant 20 drinks the mother's milk by performing the “second extension” in an early cycle of about once every 0.7 seconds. .

As described above, since the infant 20 takes breast milk from the mother's nipple 32, when the breast milk or the like in a baby bottle (not shown) is taken using the artificial nipple 1 of FIG. To exercise. Then, the artificial nipple 100 is extended (elongated) by this peristaltic movement, and breast milk or the like is taken.
For this reason, an artificial nipple that has been extended by a movement for peristalsis of an infant's tongue has been proposed (eg, Patent Document 1).
In such an artificial nipple, as shown in FIG. 1 of Patent Document 1, a thin portion having a thinner thickness than the others is arranged in a part of the artificial nipple. When the peristaltic movement by the infant's tongue is performed on the artificial nipple, the thin portion extends and the artificial nipple extends.
Further, a nipple with a cap, which is integrally formed by heat-sealing a normal artificial nipple main body and a cap for attaching the artificial nipple main body to a baby bottle as shown in FIG. .
Japanese Unexamined Patent Publication No. 2000-189596 (FIG. 1 etc.) Japanese Unexamined Patent Publication No. 1-313056 (FIG. 1 etc.)

However, in the artificial nipple as shown in Patent Document 1, it is necessary to partially form a thin thin part as shown in FIG. 1, and it is difficult to remove from the mold. There is a problem that the manufacturing is difficult and the cost is increased.
Further, the artificial nipple as shown in Patent Document 2 has a problem that the artificial nipple does not extend well when an infant tries to suck in the same manner as when breastfeeding.

  Therefore, an object of the present invention is to provide an extendable artificial nipple and a sucker that can be easily manufactured and that infants can easily perform a nursing exercise.

According to the first aspect of the present invention, there is provided an attachment means attached to a baby bottle, a nipple trunk connected to the attachment means, and a nipple formed to protrude from the nipple trunk. An artificial nipple that is extended by a peristaltic movement of an infant's tongue, the base of the artificial nipple from the attachment means to the nipple torso, a hollow tip that is the tip side of the nipple, and the nipple A central portion of the artificial nipple extending from the torso to the nipple, and the central portion is an elongated portion that is easy to extend, and the base portion and the distal end portion are less rigid than the central portion and are rigid. It is a certain rigid part, and the silicone rubber piece as the tip part, the silicone rubber piece as the central part, and the silicone rubber piece as the base part are arranged in a female mold so as to form a layer, Heated male core, female mold After that, the core is moved up and down in the female mold, and then molded, thereby forming a boundary portion between the base portion and the distal end portion which are the rigid portions and the central portion which is the extension portion. However, the rigidity of the rigid part and the extension part is intermediate so that the extension due to the peristaltic movement of the infant is a gentle change, and the attachment means includes an artificial nipple attached to the baby bottle. The artificial nipple is characterized in that a ventilation means communicating between the inside and the outside is formed, and the extension portion and the rigid portion are formed by integral molding so as to be inseparably coupled.

According to the configuration of claim 1, the extending portion becomes an extendable artificial nipple that extends (extends) by the peristaltic movement of the tongue of an infant or the like. The extendable artificial nipple is integrally formed so that the extension portion and the rigid portion are coupled inseparably. For this reason, since it is not necessary to partially form a thin extension part on the artificial nipple as in the prior art, an artificial nipple can be easily manufactured, and the extension part is not thin and there is no risk of tearing. Can do.
Further, at least from the attachment means to the attachment means side of the nipple barrel portion, a rigid portion made of a material having rigidity from the elongated portion is formed. For this reason, the attachment means vicinity which becomes an area | region where there is little influence of the peristaltic movement of an infant's tongue becomes a structure which can be reliably fixed to the said baby bottle. In addition, since the rigid portion is formed with ventilation means for communicating the inside of the baby bottle attached to the artificial nipple with the outside air, the ventilation is surely performed, and the pressure in the baby bottle is lowered during sucking, so that it is difficult to suck. Can be prevented.

According to the configuration, in the boundary portion, deformation of the artificial nipple due to peristaltic motion of the tongue without causing abrupt changes, becomes gradual change, the artificial nipple is smoothly extended (extension). For this reason, it becomes an artificial nipple easy to use for infants and the like.

According to the second aspect of the present invention, there is provided an attachment means attached to a baby bottle, a nipple trunk portion connected to the attachment means, and a nipple portion formed so as to protrude from the nipple trunk portion. And an artificial nipple that extends by a peristaltic movement of the infant's tongue, wherein the artificial nipple is located at the base of the artificial nipple from the attachment means to the nipple torso and at the distal end of the nipple. A hollow tip and a central portion of the artificial nipple extending from the nipple torso to the nipple, and the central portion is an easily stretchable extension, and the base and the tip are The silicone rubber piece serving as the tip portion, the silicone rubber piece serving as the center portion, and the silicone rubber piece serving as the base portion are formed in a female mold that is difficult to extend from the center portion and has rigidity. Arrange in layers and then Then, the heated male core is inserted into the female mold, and then the core is moved up and down in the female mold and then molded, so that the base portion and the distal end portion, which are the rigid portions, The boundary with the central portion, which is the extension portion, has an intermediate hardness between the rigid portion and the extension portion so that the extension due to the peristaltic movement of the infant's tongue is a gentle change, and the attachment means Has a ventilation means for communicating between the inside and outside of the artificial nipple attached to the feeding bottle, and the extension part and the rigid part are integrally formed so that they can be separated from each other. Achieved by the vessel.
According to the structure of Claim 2, the said artificial nipple becomes an extendable artificial nipple in which the said expansion | extension part expand | extends (extends) by peristaltic-like movement of tongues, such as an infant. The extendable artificial nipple is integrally formed so that the extension portion and the rigid portion are coupled inseparably. For this reason, it is not necessary to partially form a thin extension part on the artificial nipple as in the prior art, so that the artificial nipple can be easily manufactured and the artificial nipple is carelessly removed from the baby bottle. Thus, the sucker can maintain the pressure in the feeding bottle at normal pressure even during feeding.

  The present invention has the advantage of being able to provide an extendable artificial nipple and bottle that can be easily manufactured and does not interfere with infant feeding.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

(First embodiment)
(About the overall configuration of the nursing bottle 10)
FIG. 1 is a schematic diagram showing a configuration of a baby sucker 10 according to the first embodiment of the present invention. As shown in FIG. 1, the feeding bottle 10 has a feeding bottle 11 made of glass or resin for containing a liquid such as milk. Moreover, the baby bottle 10 has an artificial nipple 100 made of, for example, silicone rubber. The baby bottle 10 has a resin cap 12 for fixing the artificial nipple 100 to the baby bottle 11.

FIG. 2 is a schematic cross-sectional view showing the configuration of the artificial nipple 100 of FIG. As shown in FIG. 2, the artificial nipple 100 includes, for example, a base portion 110 that is an attachment means that is attached to the baby bottle 11 with a cap 12 or the like. In addition, the artificial nipple 100 includes a nipple trunk 120 connected to the base 110 and a nipple 130 formed so as to protrude from the nipple trunk 120.
Further, an ejection opening 140 for ejecting milk in the baby bottle 11 in the oral cavity of the user is formed at the tip of the teat 130. The ejection opening 140 is formed by, for example, one or a plurality of round hole-shaped fine openings, a cross-shaped, Y-shaped or one-character shaped slit or the like when viewed from the plane of FIG.

The entire artificial nipple 100 is made of, for example, silicone rubber. In the present invention, not only silicone rubber but isoprene rubber, thermoplastic elastomer, natural rubber or the like may be used.
Moreover, in this Embodiment, the artificial nipple 100 is formed with the some silicone rubber from which hardness differs. That is, the central portion 102 of the artificial nipple 100 from the nipple trunk 120 to the nipple 130 in FIG. 2 is formed of a flexible material. Specifically, it is formed of a silicone rubber having a hardness of 10 degrees (hardness by an A-type durometer in JIS-K6235 (ISO7619)).
Further, the base 101 of the artificial nipple 100 from the base portion 110 to the nipple barrel portion 120 in FIG. 2 is formed of a silicone rubber having a rigidity higher than that of the central portion 102, for example, silicone rubber having a hardness of 30 degrees. That is, the base portion 110 side of the base portion 110 and the nipple trunk portion 120 is a rigid portion.
Further, the distal end portion 103 which is the distal end side of the nipple portion 130 is also formed of silicone rubber having a hardness of 30 degrees, like the base portion 101.

For this reason, the central portion 102 in FIG. 2 is an elongated portion that is easy to extend, and the base portion 101 and the distal end portion 103 are rigid portions that are more difficult to extend than the central portion 102 and have rigidity.
That is, a rigid portion is formed on the distal end side of the nipple 100, the base 110 side of the nipple barrel 120, and the base 110, and between the distal end side of the nipple 130 and the proximal end side of the nipple barrel 120. An elongated portion is formed on the surface.
Here, an example is shown in which the base 101 and the tip 103 are made of the same material. However, for example, the tip 103 is made of a material having the same hardness as that of the center 102 and is configured to increase its thickness. You may form with 2 types of raw materials. Further, a material having a hardness of 20 degrees, for example, may be used for the tip portion 103, and it may be formed of three kinds of materials. Furthermore, you may comprise so that the raw material of 3 or more types of different hardness may be laminated | stacked as needed, and the hardness in each raw material can be selected suitably.

Incidentally, for example, a ventilation valve 150 which is a ventilation means is formed in the base portion 110 formed of a material having rigidity as shown in FIG. For this reason, even when the pressure in the baby bottle 11 decreases with sucking, the outside air flows into the baby bottle 11 inside the artificial nipple 100 by the vent valve 150 and prevents the generation of negative pressure. ing.
That is, the vent valve 150 has a function of communicating the inside and outside of the artificial nipple 100 attached to the baby bottle 11.
As shown in FIG. 2, the cap 12 is configured to be screwed into the opening end portion 11 a of the baby bottle 11 and fixed to the baby bottle 11.
For this reason, as shown in FIG. 2, the cap 12 can fix the base portion 110 of the artificial nipple 100 to the baby bottle 11, and can adjust the tightening strength thereof, and can adjust the amount of ventilation by the ventilation valve 150. It has a configuration.
In particular, since the base portion 110 is a rigid portion made of silicone rubber having a hardness of 30 degrees as described above, it is possible to effectively prevent the base portion 110 from being deformed or coming off from the cap 12 and falling off. In addition, the vent valve 150 is configured to act reliably.

(About manufacturing method of artificial nipple 100)
The sucker 10 according to the present embodiment is configured as described above. Hereinafter, a method for manufacturing the artificial nipple 100 which is a characteristic part of the present invention will be described.
FIG. 3 is a schematic flowchart showing a method for manufacturing the artificial nipple 100 of FIG. FIG. 4 is a schematic explanatory view showing a method for manufacturing the artificial nipple 100.
As shown in ST1 of FIG. 3, first, a silicone rubber piece having a hardness of 30 degrees, a silicone rubber piece having a hardness of 10 degrees, and a silicone rubber piece having a hardness of 30 degrees are formed in a mold disposed in the cavity. Insert like so.
Specifically, as shown in FIG. 4, the artificial nipple 100 is a mold having a concave outer shape. For example, a silicone having a hardness of 30 degrees is placed on a lower part 210 of the female mold 200 in the figure. A rubber piece 300 is arranged. Next, a silicone rubber piece 310 having a hardness of 10 degrees is disposed in the female mold central portion 220 of FIG. Further, a silicone rubber piece 300 having a hardness of 30 degrees is disposed on the female upper part 230 of FIG.
Thus, a plurality of silicone rubber pieces 300 and 310 having different hardnesses are arranged in layers in the female mold 200.

Next, as shown in ST <b> 2 of FIG. 3, the heated core 250 corresponding to the male mold is inserted into the female mold 200. Specifically, the core 250 shown in FIG. 4 is inserted into the female mold 200. When the core 250 is inserted into the female mold 200, a space is formed between the core 250 and the female mold 200. Further, the shape of the space formed between the female mold 200 and the core 250 is configured to be the shape of the artificial nipple 100 of FIG.
Therefore, when the core 250 of FIG. 4 is inserted into the female mold 200, the core 250 is heated, so that the silicone rubber piece 300 having a hardness of 30 degrees and the silicone rubber piece 310 having a hardness of 10 are disposed in advance. Melted.
Then, the melted silicone rubber pieces 300 and 310 are pressed by the insertion pressure of the core 250 and disposed so as to be pushed into the space between the core 250 and the female mold 200. That is, it becomes a shape like the artificial nipple 100 of FIG.

Next, as shown in ST3 of FIG. 3, the core 250 is moved up and down (bumping operation) in the female mold 200.
Thereby, it is possible to prevent air from entering the molten silicone rubber pieces 300 and 310 disposed in the female mold 200.
Next, as shown in ST4 and ST5 in FIG. 3, the bumping operation of the core 250 is stopped, the core 250 is stopped (clamping), and then molded.
That is, the silicone rubber pieces 300 and 310 melted in the female mold 200 of FIG. 4 are cured and molded.
The artificial nipple 100 having the shape shown in FIG. 2 can be manufactured by taking out the artificial nipple 100 thus molded from the female mold 200 or the like.

As shown in FIG. 2, the artificial nipple 100 manufactured in this manner can have a silicone rubber having a hardness of 10 degrees as an extension portion disposed in the central portion 102. Further, silicone rubber having a hardness of 30 degrees, which is a rigid portion, can be disposed on the base portion 101 and the distal end portion 103.
Since the silicone rubber portion having a hardness of 10 degrees is soft and easily extended, an extendable artificial nipple 100 that can be easily extended by the movement of the tongue 23 of the infant 20 as shown in FIG. 12 can be manufactured.
That is, in the present embodiment, since it is possible to form the elongated portion without reducing the thickness of the artificial nipple as in the prior art, not only there is no possibility of breaking at the thin portion, There is no need for a special process such as partially reducing the thickness of the artificial nipple. In addition, as described above, the artificial nipple 100 includes the silicone rubber pieces 300 and 310 having different hardnesses arranged in layers in the female mold 200, the heated core 250 is inserted, and the silicone rubber pieces 300 and 310 are inserted. 310 is manufactured by compression molding in which melting, pressing, curing, and the like are performed in the cavity.
For this reason, compared with the past, the artificial nipple 100 can be manufactured at low cost and easily.

In addition, since the boundary portion between the base portion 101 and the distal end portion 103 which are the rigid portions of the artificial nipple 100 of FIG. 2 and the central portion 102 which is the extension portion is formed through a compression molding melting step, the boundary portion is The region is not clearly divided, but is a dense state, that is, a region having an intermediate hardness between the rigid portion and the extended portion.
For this reason, the center part 102, the base part 101, and the front-end | tip part 103 of the artificial nipple 100 will be in the state by which the silicone rubber from which hardness differs was arrange | positioned adjacently via the site | part of the dense state used as an intermediate | middle area | region, and this state Thus, even if the artificial nipple 100 is extended, it is possible to prevent a sudden change from occurring at these boundaries.
That is, since the extension changes gently at these boundaries, the entire artificial nipple 100 extends (extends) smoothly, and the artificial nipple 100 is easy to use for infants and the like who are users.

(Operation example of artificial nipple 100)
Although the artificial nipple 100 according to the present embodiment is configured as described above, its operation and the like will be described below.
FIG. 5 is a schematic explanatory view showing a state in which the artificial nipple 100 of FIG. 2 is inserted into the oral cavity of the user, for example, an infant 20. In FIG. 5, the baby bottle 11 and the like in FIG. 1 are omitted, and only the artificial nipple 100 is shown.
As shown in FIG. 5, when the artificial nipple 100 is added to the infant 20, the tip 103 shown in FIG. 2 of the artificial nipple 100 is brought into contact with the sucking cavity 22 of the infant 15 and is artificially formed by the tongue 23 of the infant 20. The nipple 100 is pressed upward in the figure, and the above-described feeding preparation stage as shown in FIG. 9 is completed.
Since the artificial nipple 100 is different from the mother's nipple 32 and has a length that has already been subjected to the first extension, the infant 20 holds the artificial nipple 100 so that the distal end portion 103 of the artificial nipple 100 is attached to the infant. 20 is configured to be deformed so as to come into contact with the sucking cavity 22.

Thereafter, as shown in FIGS. 12 (a) to 12 (c), the above-described peristaltic movement of the infant 20 by the tongue 23 is performed, the artificial nipple 100 is extended (elongated), and the above-described secondary extension occurs.
Specifically, the artificial nipple 100 is extended by the tongue 23 of the infant 20 in FIG. 5 performing the peristaltic movements in FIGS. That is, since the central portion 102 corresponding to the extending portion in FIG. 5 of the artificial nipple 100 is made of soft silicone rubber having a hardness of 10 degrees, it is more easily extended (elongated) by the peristaltic movement of the tongue 23 of the infant 20. It has become.
On the other hand, since the distal end portion 103 and the base portion 101 in FIG. 2 are made of silicone rubber having a high hardness of 30 degrees, the artificial nipple 100 is pressed against the upper palate 21 in FIG. In addition, the artificial nipple 100 is prevented from being crushed or detached from the cap 12, and the ventilation valve 150 ensures ventilation.
That is, when the artificial nipple 100 is crushed, the milk in the baby bottle 11 cannot pass through the artificial nipple 100, thereby preventing the infant 20 from ingesting the milk or deforming the artificial nipple 100 inward. Etc. can be prevented in advance.

As described above, in the present embodiment, the artificial nipple 100 is easy to be extended by the peristaltic movement of the infant 20 by the tongue 23 and is not easily crushed.
Moreover, the center part 102 (extension | stretching part) of FIG. 2 is arrange | positioned in the area | region where the peristaltic movement by the tongue 23 of the infant 20 is performed, as shown in FIG. For this reason, the artificial nipple 100 has a configuration in which the peristalsis-like movement of the infant 20 by the tongue 23 is easily performed and easily extended. Due to this extension and smooth peristaltic movement of the tongue, the artificial nipple 100 is easy to carry out a sucking movement more smoothly.

  Further, the hardness of the boundary portion between the central portion 102 that is easy to extend by the peristaltic movement of the infant 20 by the tongue 23 and the tip portion 103 that is difficult to extend from the central portion 102 causes the infant 20 to feel uncomfortable. There is a fear. However, in the present embodiment, since the boundary portion is in a dense state by compression molding as described above so as to be an intermediate region of hardness, even if the tongue 23 of the infant 20 abuts, it is difficult to give a sense of incongruity. It has become. Therefore, the artificial nipple 100 is easy to use for the infant 20.

(Second Embodiment)
FIG. 6 is a schematic cross-sectional view showing the configuration of the artificial nipple 400 of the sucker according to the second embodiment. Since the present embodiment has many configurations in common with the artificial nipple 100 of the first embodiment, the description of common portions will be omitted by using the same reference numerals and the like, and description will be made focusing on the differences.
In the present embodiment, as shown in FIG. 6, a groove 402 a is formed inside the central portion 402 of the artificial nipple 100. That is, in the central portion 402 that is the extension portion, the thickness is thinner than the thickness of the base portion 110 and the tip portion 103 that are the rigid portions, for example, the groove portion 402a is formed in a plurality of ring shapes, spiral shapes, or the like. Yes.
Accordingly, as shown in FIG. 12, when the infant 20 performs a peristaltic movement with the tongue 23, the center portion 402a, which is an extension portion, is thinner than the other portions, and therefore, the configuration is easier to extend. For this reason, the infant 20 becomes an artificial nipple 400 that is easier to use.

Other configurations of the present embodiment are the same as those of the artificial nipple 100 of the first embodiment described above, and the manufacturing method thereof is also formed by compression molding, similar to the first embodiment.
However, in the present embodiment, unlike the first embodiment, since the groove 402a is provided, the core is provided with a protrusion for forming the groove 402a, unlike the core 250 in FIG.
In the present embodiment, since the groove portion 402a is simultaneously formed by compression molding, a special process for forming a conventional groove is unnecessary. For this reason, the artificial nipple 400 can be shape | molded simply and at low cost.

(Third embodiment)
FIG. 7 is a schematic view showing a pacifier 500 using an artificial nipple 600 according to the third embodiment. Since the present embodiment has many configurations in common with the artificial nipple 100 of the first embodiment, the description of common portions will be omitted by using the same reference numerals and the like, and description will be made focusing on the differences.
The artificial nipple 600 of the present embodiment is configured such that the ejection opening 140 is not formed in the artificial nipple 100 of FIG. The other structure is the same as that of the artificial nipple 100 of FIG.
Unlike the first embodiment, the artificial nipple 600 is attached to the seat plate portion 510 shown in FIG. Although not shown, in the pacifier 500 in the present embodiment, the ventilation valve 150 is not provided in the artificial nipple 100, and a ventilation portion is formed in the seat plate portion 510 and the like.
Accordingly, since the infant 20 can smoothly perform the peristaltic movement of the tongue 23 by using the pacifier 500, the pacifier 500 can give a preferable stimulus to the infant 20 and the like.

(Fourth embodiment)
FIG. 8 is a schematic cross-sectional view showing the configuration of the artificial nipple 600 of the sucker according to the fourth embodiment. Since the present embodiment has many configurations in common with the artificial nipple 100 of the first embodiment, the description of common portions will be omitted by using the same reference numerals and the like, and description will be made focusing on the differences.
In the present embodiment, as shown in FIG. 8, unlike the artificial nipple 100 of the first embodiment, the distal end portion 603 is not made of a material different from the central portion 602, and is flexible from the central portion 602 to the distal end portion 603. The flexible portion 604 is disposed up to the distal end portion 603 with respect to the rigid portion composed of the base portion 601 and the base portion 110.
At this time, the flexible portion 604 positioned at the distal end portion 603 is configured to be slightly thicker than that of the first embodiment, and prevents collapse completely due to the peristaltic movement, while feeding. It is configured to deform appropriately so as not to hinder movement.
Further, a coupling portion 605 is formed at the boundary between the base portion 601 that is a rigid portion and the flexible portion 604 that is an extension portion. In the coupling portion 605, a flexible layer 605a composed of a flexible portion 604 serving as an extension portion is disposed on the outer surface side, and a rigid layer 605b composed of a base portion 601 serving as a rigid portion is disposed on the inner surface side.
By disposing the flexible layer 605a on the outside in this way, as in the first embodiment, when the infant performs the tongue-like movement of the tongue, the uncomfortable feeling at the boundary between the rigid part and the extension part is suppressed, The artificial nipple 600 is easy to suck.

The artificial nipple 600 is formed by a manufacturing method different from that of the first embodiment.
The manufacturing method of the artificial nipple 600 according to the present embodiment is a molding by a so-called two-color molding machine that can perform insert molding on a mold. As a first step, the shape inside the artificial nipple 600 is formed. The base 601 that is a rigid portion and the first female die having the outer shape of the base portion 110 are fitted to the core die thus formed and clamped.
After that, as a second step, a rigid material is formed by injection molding a liquid material that is a relatively high hardness (for example, a hardness of 30 degrees) to be a rigid portion into a mold (an example of a first molded product).
Further, as the third step, the mold clamping is released to remove the female die, and the core is attached to the second female die having the outer shape of the flexible portion 604 in a state where the molded rigid portion is attached to the core die. Fit the molds and tighten the molds.
Thereafter, as a fourth step, a liquid material (an example of another material) having a relatively low hardness (for example, 15 degrees hardness) used as the flexible portion 604 is injection-molded into a mold, and the flexible portion 604 is injected. The artificial nipple 600 is molded so as to be integrated with the rigid part (an example of molding the second molded product and heat-sealing the first molded product and the second molded product integrally).
At this time, since the joint surface in the joint portion 605 that becomes a boundary portion between the flexible portion 604 and the base portion 601 is stepped, the joint area becomes large when being melted and joined, and the joint portion is surely joined. It becomes.
Of course, after molding only the rigid portion, the molded rigid portion may be held in a mold of another molding machine, and the flexible portion 604 may be molded integrally, or the coupling portion 605 may be molded. It is also possible to provide an uneven surface on the joint surface so as to be surely integrated.
In the present embodiment, an artificial nipple 600 that can be easily manufactured using an injection molding machine and is easy for infants to suck can be obtained.

(Fifth embodiment)
FIG. 9 is a schematic cross-sectional view showing the configuration of the artificial nipple 700 of the sucker according to the fifth embodiment. Since the present embodiment has many configurations in common with the artificial nipple 100 of the first embodiment, the description of common portions will be omitted by using the same reference numerals and the like, and description will be made focusing on the differences.
In the present embodiment, like the artificial nipple 600 shown in FIG. 8, it is formed by insert molding. However, unlike the fourth embodiment, the tip portion 703 is a rigid portion having relatively high hardness. In addition, three ribs 706 (two in the figure for cross section) are provided so as to connect the tip 703 and the base 701 across the intermediate portion 702 made of a flexible material.
These three ribs 706 ensure a flow path for breast milk or the like even if the extension part of the artificial nipple 700 is crushed during feeding, and the number of the ribs 706 may be further increased. It may be provided obliquely or may have a spiral shape.
Further, by providing the rib 706, the rigid portion can be formed at a time, similarly to the first step in the fourth embodiment. That is, even when an injection hole (not shown) is on the rigid portion side, the same material can be supplied to the tip portion 103 side through the three ribs 706.
In this embodiment, unlike the fourth embodiment, the cap 12 is not provided, and the base portion 110 made of a rigid portion is extended to the baby bottle 11 side to form the mounting portion 720. In addition, a so-called direct-attached type nipple provided with a detachable knob 721 further outward from the mounting portion 720. That is, the artificial nipple 700 is configured to directly engage with the baby bottle 11.
Also in this embodiment, an artificial nipple 700 that can be easily manufactured using an injection molding machine and is easy for an infant to suck.

  The present invention is not limited to the embodiments described above. The above-described embodiments may be configured in combination with each other. Further, the extending portions and the rigid portions may be arranged in a ring shape so as to overlap each other alternately, and may be overlapped in a spiral shape.

It is the schematic which shows the structure of the sucker which concerns on the 1st Embodiment of this invention. It is a schematic sectional drawing which shows structures, such as an artificial nipple of FIG. It is a schematic flowchart which shows the manufacturing method of the artificial nipple of FIG. It is a schematic explanatory drawing which shows the manufacturing method of an artificial nipple. It is a schematic explanatory drawing which shows the state which the user, for example, the infant who inserted the artificial nipple of FIG. 2 in the own mouth. It is a schematic sectional drawing which shows the structure of the artificial nipple of the sucker of 2nd Embodiment. It is the schematic which shows the pacifier using the artificial nipple which concerns on 3rd Embodiment. It is a schematic sectional drawing which shows the structure of the artificial nipple of the sucker of 4th Embodiment. It is a schematic sectional drawing which shows the structure of the artificial nipple of the sucker of 5th Embodiment. It is a schematic sectional drawing of the conventional artificial nipple. It is a schematic explanatory drawing which shows the state in which the infant added nipples, such as mothers. FIG. 12 is a schematic enlarged explanatory view showing a state in which the bulge of the tongue slightly exceeds the tip of the nipple and performs a peristaltic movement deep inside the oral cavity in the relationship between the tongue and the tip of the nipple in FIG. 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Feeder, 11 ... Baby bottle, 11a ... Open end, 12 ... Cap, 20 ... Infant, 21 ... Upper palate, 22 ... Feeding cavity, 23 .... Tongue, 24 ... soft palate, 27a ... upper lip, 27b ... lower lip, 28b ... lower alveolar ridge, 30 ... breast, 31 ... areola, 32 ... nipple 32a ... tip of nipple, 100, 400, 600 ... artificial nipple, 101, 601, 701 ... base, 102, 402, 602, 702 ... center, 103, 604, 704 ... · Tip portion, 110 ··· base portion, 120, 420 · · · nipple body portion, 130, 430 · · · nipple portion, 140 · · · ejection opening, 150 · · · vent valve, 200 · · · female type 210 ... Female lower part, 220 ... Female central part, 230 ... Female upper part, 250 ... Core: 300 ... Silicone rubber piece with 30 degree hardness, 310 ... Silicone rubber piece with 10 degree hardness, 402a ... Groove part, 500 ... Pacifier, 510 ... Seat plate part, A ... Hollow part, E ... sealed space.

Claims (2)

Attachment means attached to the baby bottle;
A nipple barrel connected to the attachment means;
A nipple that protrudes from the nipple torso, and an artificial nipple that extends by a peristaltic movement of the infant's tongue,
The base of the artificial nipple from the attachment means to the nipple barrel,
A hollow tip that is the tip of the nipple,
A central portion of the artificial nipple from the nipple torso to the nipple, and
The central portion is an elongated portion that is easy to extend, and the base portion and the distal end portion are rigid portions that are hard to extend from the central portion and have rigidity,
Placed in a female mold so that the silicone rubber piece serving as the tip, the silicone rubber piece serving as the central part, and the silicone rubber piece serving as the base form a layer,
The heated male core is then inserted into the female mold,
Then, by moving the core up and down in the female mold,
The base part and the tip part which are the rigid part and the boundary part between the central part which is the extension part and the extension part and the extension part so that the extension due to the peristaltic movement of the infant's tongue is a gentle change. The hardness of the middle of the part,
The attachment means is formed with a ventilation means for communicating the inside and outside of the artificial nipple attached to the baby bottle,
The artificial nipple characterized by being formed by integral molding so that the extension part and the rigid part are coupled inseparably. Attachment means attached to the baby bottle;
A nipple barrel connected to the attachment means;
A nipple that protrudes from the nipple torso, and a mammal comprising an artificial nipple that extends by a peristaltic movement of the infant's tongue,
The artificial nipple is a base of the artificial nipple from the attachment means to the nipple trunk,
A hollow tip that is the tip of the nipple,
A central portion of the artificial nipple from the nipple torso to the nipple, and
The central portion is an elongated portion that is easy to extend, and the base portion and the distal end portion are rigid portions that are hard to extend from the central portion and have rigidity,
Placed in a female mold so that the silicone rubber piece serving as the tip, the silicone rubber piece serving as the central part, and the silicone rubber piece serving as the base form a layer,
The heated male core is then inserted into the female mold,
Then, by moving the core up and down in the female mold,
The base part and the tip part which are the rigid part and the boundary part between the central part which is the extension part and the extension part and the extension part so that the extension due to the peristaltic movement of the infant's tongue is a gentle change. The hardness of the middle of the part,
The attachment means is formed with a ventilation means for communicating the inside and outside of the artificial nipple attached to the baby bottle,
The extension unit and the rigid part are formed by integral molding so that they can be separated from each other.

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