CN220115232U - A kind of fresh-keeping bottle - Google Patents

Abstract

The utility model provides a fresh-keeping bottle, includes bottle and bottle lid subassembly, the bottle is equipped with the bottleneck, and the bottleneck is enclosed by the bottleneck lateral wall, fresh-keeping bottle is still including locating the interior bag in the bottle and the interior bag joint of being connected with interior bag, interior bag joint is including connecting the body, locating the first connecting portion of connecting the body upper end and locating the second connecting portion that connects the body lower extreme, it is equipped with the first through-hole that vertically runs through the body to connect the body, first connecting portion is connected with the bottleneck, second connecting portion is connected with interior bag, bottle lid subassembly lid is located first connecting portion or bottleneck lateral wall. The utility model greatly simplifies the connecting structure of the inner bag and the bottle body by arranging the inner bag connector device, and the inner bag is put into the bottle body, thereby not only playing a good fresh-keeping role on objects in the inner bag, but also being convenient for transportation and avoiding the extrusion of the outer force on the inner bag.

Description

A kind of fresh-keeping bottle

Technical field

The utility model relates to a packaging bottle technology, in particular to a double-layer packaging bottle structure with an inner bag.

Background technique

Existing liquid packaging bottles are generally single-layer bottles, that is, the bottle body is single-layered. During use, the bottle cap assembly is unscrewed. At this time, air enters the bottle, especially oxygen and liquid are mixed together, making it easy for the packaged substance to change the taste. , and even cause deterioration, short-term storage, and poor preservation efficiency, especially for liquid items that are not consumed once.

With the development of technology, a double-layer bottle has emerged, that is, the bottle body has an outer layer and an inner layer, and an intermediate layer is used to store air between the two layers; in order for the air in the middle layer to provide sufficient air pressure for the inner layer of the bottle, special A single air inlet valve is designed on the outer layer to provide greater air pressure for the double-layer packaging bottle to make the inner layer fluid easier to squeeze out. However, the inner and outer layers of existing double-layer packaging bottles have an integrated structure, the connection method is fixed, and the scope of application is limited. In addition, existing two-layer packaging bottles have an intermediate layer between the two layers, resulting in the actual volume of the inner layer being much smaller than the volume of the outer layer. Due to the existence of the intermediate layer, in order to ensure the smooth extrusion of the inner layer liquid, the outer layer needs to be The structure is designed to be an elastic structure, or there are several wedge-shaped blocks on the inner and outer side walls, and a single air inlet valve is added to the outer bottle wall to ensure the pressure of the middle layer, which not only makes the structure of the packaging bottle complex, but also affects the Economical and practical packaging bottles.

Utility model content

In order to overcome at least one of the defects of the above-mentioned prior art, the utility model provides a fresh-keeping bottle with good fresh-keeping effect, simple structure, wide application range, and is economical and practical.

In order to solve the above technical problems, the technical solution adopted by this utility model is:

A fresh-keeping bottle includes a bottle body and a bottle cap assembly. The bottle body is provided with a bottle mouth. The bottle mouth is surrounded by the side walls of the bottle mouth. The fresh-keeping bottle also includes an inner bag located in the bottle body and connected to the inner bag. The inner bag joint includes a joint body, a first connecting portion provided at the upper end of the joint body, and a second connecting portion provided at the lower end of the joint body. The joint body is provided with a first passage longitudinally penetrating the joint body. hole, the first connecting part is connected to the bottle mouth, the second connecting part is connected to the inner bag, and the bottle cap assembly is installed on the first connecting part or the side wall of the bottle mouth. The utility model greatly simplifies the connection structure between the inner bag and the bottle body by arranging the inner bag joint device. Putting the inner bag into the bottle body not only has a good preservation effect on the objects in the inner bag, but also facilitates transportation. , to avoid external force squeezing the inner bag.

In order to facilitate the installation between the inner bag connector and the bottle mouth, the outer diameter of the first connecting portion is larger than the connector body and larger than the second connecting portion.

The first connection part includes a joint support part protruding from the joint body in the transverse direction, and the joint support part is provided with a joint side wall extending upward in the longitudinal direction. This structure can make the side wall of the joint close to the side wall of the bottle mouth, thereby playing a certain positioning role, and the joint support part can easily install the inner bag joint at the bottle mouth position.

In order to further strengthen the fixed installation between the inner bag joint and the bottle mouth, a first fixing device is provided between the side wall of the joint and the side wall of the bottle mouth. The first fixing device includes a latching protrusion provided on the side wall of the bottle mouth and a latching groove provided on the side wall of the joint, and the latching protrusion snaps into the latching groove; The latching groove on the side wall and the latching protrusion provided on the side wall of the joint, and the latching protrusion is inserted into the latching groove.

The height of the joint side wall is lower than the height of the bottle mouth side wall. This structure facilitates the first concave portion of the lower cover to extend into the bottle mouth and fix the inner bag connector at the bottle mouth position.

The height of the joint side wall is higher than the height of the bottle mouth side wall, and a fifth connecting portion capable of being connected to the bottle cap assembly is provided on the outside of the joint side wall. The fifth connecting part is a thread or rib structure. The side wall of the joint is directly connected to the bottle cap assembly, which increases the sealing property of the joint with the inner bag.

The side wall of the bottle mouth is provided with a fixing groove with an opening facing the joint support part, and the joint support part protrudes from the joint side wall in the transverse direction and extends into the fixing groove. The bottle body mainly plays the role of protecting the inner bag. The fixing groove can further simplify the bottle body mechanism and reduce manufacturing costs.

A positioning device is provided between the joint support part and the fixed groove. The positioning device includes a positioning groove provided on the joint support part and a positioning block provided in the fixed groove. The positioning block extends into the positioning groove, or the positioning device extends into the positioning groove. The positioning device includes a positioning block provided on the joint support part and a positioning groove provided in the fixing groove, and the positioning block extends into the positioning groove.

In order to simplify the connection structure between the joint side wall and the bottle mouth side wall, the joint side wall and the bottle mouth side wall are fixedly connected through threads or clamping ribs.

The side wall of the joint is disposed in the bottle mouth and is in close contact with the side wall of the bottle mouth. The upper end of the side wall of the joint is provided with a laterally outward flange, and the flange is set up on the upper edge of the side wall of the bottle mouth.

A third connecting portion for supporting the joint support portion is provided on the inner side of the side wall of the bottle mouth. The third connection part provides a support platform for the installation of the inner bag joint, and the installation of the inner bag joint can be realized with a simple structure.

The third connecting part is an annular platform provided on the inner wall of the side wall of the bottle mouth. Alternatively, the third connecting portion is a point structure or a mutually spaced line segment structure distributed on the side wall of the bottle mouth.

A fourth connection part connected to the lower cover is provided on the outside of the side wall of the bottle mouth, and the fourth connection part is provided above the third connection part.

The bottle body is provided with a vent hole, and a second one-way valve is provided at the vent hole to allow outside air to enter the bottle body. The setting of the second one-way valve can facilitate the flow out of the filling in the inner bag and prevent gas from entering the inner bag.

A second fixing device is provided between the first connecting part and the third connecting part. The second fixing device includes a latching groove provided on the third connecting part and a latching protrusion provided at the bottom of the joint support part, and the latching protrusion engages in the latching groove; or, the second fixing device includes a latching protrusion provided on the third connecting part. There are latching protrusions on the three connecting parts and a latching groove provided at the bottom of the joint support part, and the latching protrusions are inserted into the latching grooves.

An inclined plane transition is provided between the first connecting part and the first through hole to facilitate liquid entering the inner bag.

In order to enhance the sturdiness of the inner bag joint, a support plate is provided on the joint body near one end of the first connecting part and below the inclined plane. The support plate extends outward around the joint body and has an elliptical track-like structure. The diameter of the narrowest part of the support plate is smaller than the outer diameter of the first connecting part. A support wall is provided between the inclined surface and the support plate.

The second connecting part includes a connecting rib surrounding the joint body and protruding from the joint body. An extension is provided on the symmetrical side of the connecting rib. The extension can better fit the inner bag and achieve sealing with the inner bag.

The bottle cap assembly includes a lower cap and an upper cap. The lower cover is provided with a lower cover top wall and a lower cover side wall extending downward from the periphery of the top surface of the lower cover. The lower cover top wall is provided with a first recess that is depressed downward and can extend into the bottle mouth. The first recess is provided with There is a first liquid outlet hole connected with the inner bag connector.

An annular groove is provided on the periphery of the first recess, and the annular groove can facilitate the installation of the first one-way valve.

The first connection part includes a joint support part protruding from the joint body in the transverse direction, the joint support part is provided with a joint side wall extending upward in the longitudinal direction, and the bottom surface of the first recessed part is provided with a downwardly extending The annular rib can conflict with the joint side wall of the inner bag joint.

A first one-way valve is provided in the first recess. The first one-way valve includes a sealing portion covering the first liquid outlet hole and a fixing portion connected to the sealing portion.

An annular groove is provided on the periphery of the first recess, and the fixing part is configured as a fixing ring that can extend into the annular groove of the lower cover. A through hole for liquid return is provided in the annular groove. A number of connecting bridges are provided between the fixed part and the sealing part, and there are gaps between the connecting bridges for liquid to flow out. The sealing part has an upward arch structure.

The first recess is provided with a liquid outlet. The liquid outlet includes a top wall of the liquid outlet and a side wall of the liquid outlet extending downward from the top wall of the liquid outlet. The side wall of the liquid outlet can extend into the lower cover. The first concave portion limits the position of the liquid outlet nozzle.

The top wall of the liquid outlet is provided with a first upright column, and the first upright column is configured as a hollow structure. The top wall of the liquid outlet is configured as a downward concave structure.

The side wall of the liquid outlet is snap-fitted with the side wall of the first recess. The edge of the top wall of the liquid outlet is provided with a clamping structure that laterally protrudes from the side wall of the liquid outlet. The top wall of the lower cover is also provided with a second recess. The first recess is provided on the second recess so that A step capable of supporting is formed between the first recess and the top wall of the lower cover. When the side wall of the liquid outlet extends into the first recess of the lower cover, the clamping structure is supported on the second recess.

The upper cover includes a top wall and a side wall of the upper cover. The top wall of the upper cover is provided with a second upright column that can be inserted into the first upright column in a closed state.

An annular wall of the upper cover extending downward is provided between the side wall of the upper cover and the second upright column. When the upper cover and the lower cover are closed, the annular wall of the upper cover can press against the top of the liquid outlet. wall.

The utility model also provides a method for using a fresh-keeping bottle, which includes the following steps:

Step (1): Provide the above-mentioned fresh-keeping bottle and sealingly connect the second connection part of the inner bag connector to the inner bag;

Step (2): Put the inner bag into the bottle body, and connect the inner bag connector to the bottle mouth;

Step (3): Fill the inner bag with filling material;

Step (4): Install the lower cover of the bottle cap assembly on the side wall of the bottle mouth or the side wall of the joint so that the first recess on the lower cover extends into the side wall of the bottle mouth or joint, and set the first one-way valve on the bottom Cover the first recess and place the liquid outlet cover in the first recess so that it is located above the first one-way valve. Close the upper cover and the lower cover, and the second column of the upper cover extends into the first column of the liquid outlet. ;

Step (5): Close the vent hole of the bottle body to facilitate the transportation of the fresh-keeping bottle.

To sum up, the fresh-keeping bottle of the present invention has at least the following beneficial effects:

First, the present invention places an inner bag inside the bottle. When the liquid in the inner bag flows out, the inner bag shrinks to prevent air from entering the inner bag, thereby preventing the internal fluid from oxidizing, thereby achieving the purpose of preservation.

Second, the utility model flexibly connects the bottle body and the inner bag through the inner bag joint, which facilitates the combination of the inner bag and the bottle body, enables the packaging bottle to be adapted to different bottle cap assemblies, and improves the applicable scope of the packaging bottle. .

Third, there is no intermediate layer between the bottle body and the inner bag of the utility model, which greatly simplifies the bottle body structure of the fresh-keeping bottle. At the same time, the bottle body and the inner bag are kept consistent in shape, so that the bottle body and the inner bag are closely connected, so that the bottle body and the inner bag can be closely connected. This ensures that the inner bag will not shake, increases the volume of the packaging bottle, and improves the economic efficiency and aesthetics of the packaging bottle.

Description of the drawings

Figure 1 is a cross-sectional view of a fresh-keeping bottle according to Embodiment 1 of the present utility model;

Figure 2 is a schematic structural diagram of the inner bag joint of the fresh-keeping bottle in Embodiment 1 of the present utility model;

Figure 3 is a schematic structural diagram of the bottle cap assembly in Embodiment 1 of the present utility model;

Figure 4 is a schematic diagram of the installation structure of the joint between the bottle body and the inner bag in Embodiment 1 of the present utility model;

Figure 5 is a schematic diagram of the installation structure of the bottle cap assembly, bottle body and inner bag joint in Embodiment 1 of the present utility model;

Figure 6 is a cross-sectional view of the connection between the inner bag connector and the bottle mouth of the fresh-keeping bottle in Embodiment 2 of the present utility model;

Figure 7 is a cross-sectional view of the connection between the inner bag connector and the bottle mouth of the fresh-keeping bottle in Embodiment 3 of the present invention;

Figure 8 is a schematic structural diagram of the inner bag joint in Embodiment 4 of the present utility model;

Figure 9 is a schematic structural diagram of the fresh-keeping bottle body in Embodiment 4 of the present utility model;

Figure 10 is a cross-sectional view of the connection between the inner bag joint and the bottle mouth in Embodiment 4 of the present invention;

Figure 11 is another structural schematic diagram of the inner bag joint in Embodiment 4 of the present utility model;

Figure 12 is another structural schematic diagram of the fresh-keeping bottle body in Embodiment 4 of the present utility model;

Figure 13 is another cross-sectional view of the connection between the inner bag connector and the bottle mouth in Embodiment 4 of the present invention;

Figure 14 is a schematic structural diagram of the inner bag joint of the fresh-keeping bottle in Embodiment 5 of the present utility model;

Figure 15 is a schematic structural diagram of the fresh-keeping bottle body in Embodiment 5 of the present utility model;

Figure 16 is a cross-sectional view of the connection between the inner bag joint and the bottle mouth in Embodiment 5 of the present invention;

Figure 17 is a schematic structural diagram of the inner bag joint in Embodiment 6 of the present invention;

Figure 18 is a cross-sectional view of the connection between the inner bag connector and the bottle mouth in Embodiment 6 of the present invention;

Figure 19 is a schematic structural diagram of the inner bag joint in Embodiment 7 of the present utility model;

Figure 20 is a cross-sectional view of the connection between the inner bag joint and the bottle mouth in Embodiment 7 of the present invention.

Reference signs:

Bottle body 1, bottle mouth side wall 10, third connecting part 11, fourth connecting part 12, second one-way valve 13, fixing groove 14, flange 15, positioning block 16, seventh connecting part 17

Inner bag 2, inner bag joint 20, joint body 21, first through hole 201, slope 202, support plate 203, support wall 204, first connection part 22, joint support part 221, joint side wall 222, first fixing device 223. Second fixing device 224, fifth connecting part 225, sixth connecting part 226, reinforced wall 227, flange 228, positioning groove 229, second connecting part 23, connecting rib 231, extension part 232

Lower cover 30, lower cover top wall 301, lower cover side wall 302, first recess 304, first liquid outlet hole 305, annular groove 306, second recess 308, step 309

First one-way valve 40, sealing part 41, fixing part 42, connecting bridge 43

Liquid outlet 50, liquid outlet top wall 501, liquid outlet side wall 502, first column 503, clamping edge structure 504

Upper cover 60, upper cover top wall 601, upper cover side wall 602, second upright column 603, upper cover annular wall 604

Detailed ways

The drawings are for illustrative purposes only and should not be construed as limitations of this patent; the “first”, “second” and “third” mentioned in the embodiments are not limitations on the number of components, but are intended to distinguish different components. component name, so the “third” component does not need to exist based on the “first” and “second” components; the “up” and “down” mentioned in the embodiments include not only directly above or directly below, but also Obliquely above or obliquely below; the front, back, left, and right mentioned in the embodiment are based on the description of the drawings in the description and do not constitute a limitation on the technical features; in order to better illustrate this embodiment, some of the drawings Components may be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations of this patent.

As shown in Figures 1-5, the utility model relates to a fresh-keeping bottle, which includes a bottle body 1, a bottle cap assembly and an inner bag 2. The bottle body 1 is provided with a bottle mouth, and the bottle mouth is surrounded by bottle mouth side walls 10 , the bottle cap assembly is connected to the bottle mouth, the inner bag 2 is provided with an inner bag joint 20, and the inner bag joint 20 is located at the bottle mouth.

The bottle body 1 is made of PET material, and the inner bag 2 is placed in the bottle body 1 for containing and storing liquid or semi-solid substances such as sauce, soy sauce, vinegar, oil, cooking wine, juice, etc. Generally, the volume of the inner bag 2 when fully filled is not larger than the bottle body 1. Preferably, the shape of the inner bag 2 is consistent with the shape of the bottle 1 and closely fits the inner wall of the bottle 1 so that the inner bag 2 can be fully expanded within the bottle 1. However, in order to prevent the bottle 1 from being squeezed by external forces, the inner bag 2 2 causes physical pressure. The size of the inner bag 2 can be smaller than the volume of the bottle 1, so that after the inner bag 2 is fully filled, there is still a certain gap between the inner bag 2 and the bottle 1. When the bottle 1 is sealed, such as a lid After the bottle cap assembly is installed and a sealed space is formed in the bottle body 1, the gap between the inner bag 2 and the bottle body 1 can have a good buffering effect, avoiding the impact of the fresh-keeping bottle on the inner bag during production or transportation. 2 cause damage.

As shown in FIG. 3 , the inner bag joint 20 is fixedly connected to the inner bag. The so-called fixed connection naturally includes the solution that the inner bag joint 20 and the inner bag 2 are integrally formed. The inner bag connector 20 includes a connector body 21, a first connecting portion 22 and a second connecting portion 23 provided on the connector body 21. The first connecting portion 22 is connected to the bottle body 1, and the second connecting portion 23 is connected to the bottle body 1. Inner bag 2 connections.

The joint body 21 has a generally cylindrical structure. The middle part of the joint body 21 is provided with a first through hole 201 that penetrates the joint body 21 longitudinally. The first connecting part 22 is provided at the upper end port of the main body. The first connecting part 22 is included in The joint support portion 221 protrudes from the joint body 21 in the transverse direction. The joint support portion 221 is provided with a joint side wall 222 extending upward in the longitudinal direction. The diameter of the joint side wall 222 is smaller than the bottle mouth side wall 10 and can fit with the bottle mouth side wall 10. The height of the joint side wall 222 is lower than the bottle mouth side wall 10 to facilitate installation at the bottle mouth position after the bottle cap assembly is closed. One-way valve and liquid outlet 50. A slope 202 is provided between the joint support part 221 and the first through hole 201 , so that the first connection part 22 and the upper end of the joint body 21 form a funnel-shaped structure with a larger top and a smaller bottom.

The outer diameter of the first connecting part 22 is larger than the joint body 21 and larger than the second connecting part 23 to facilitate the connection between the first connecting part 22 and the bottle body 1 . The joint body 21 is provided with a support plate 203 near one end of the first connecting portion 22 and below the slope 202. The support plate 203 extends outward around the joint body 21 and is generally in the shape of an elliptical track. The diameter of the narrow part is smaller than the outer diameter of the first connecting part 22 to prevent the support plate 203 from interfering with the assembly of the first connecting part 22 and the bottle body 1 .

In order to enhance the installation strength of the first connecting part 22, a number of supporting walls 204 are provided between the inclined surface 202 and the supporting plate 203. The supporting walls 204 connect the inclined surface 202 and the supporting plate 203, making the first connecting part 22 more structurally friendly. firm.

The second connecting portion 23 is provided at the lower end of the joint body 21. The second connecting portion 23 includes a plurality of connecting ribs surrounding the joint body 21 and protruding from the joint body 21. The symmetrical sides of the connecting ribs are provided with extension portions 232 for convenience. Better sealing connection with inner bag 2. The number of the connecting ribs is preferably 1-3, and gaps between the connecting ribs can increase the sealing area between the inner bag 2 and the connecting ribs.

As shown in FIG. 4 , the bottle cap assembly includes a lower cap 30 , a first one-way valve 40 , a liquid outlet 50 and an upper cap 60 connected to the lower cap 30 .

The lower cover 30 is provided with a lower cover top wall 301 and a lower cover side wall 302 extending downward from the periphery of the lower cover top wall 301. The lower cover side wall 302 is provided with a lower cover connection device, and the lower cover connection device is The internal threads or ribs on the side wall 302 of the lower cover facilitate threaded connection or rib clamping with the bottle mouth side wall 10 or the joint side wall 222, and the ribs are convex rib-like structures.

The middle part of the top wall 301 of the lower cover is recessed downward to form a first recess 304 that can extend into the bottle mouth. The middle part of the first recess 304 is provided with a first liquid outlet hole 305 that communicates with the inner bag connector 20. The first recess 304 is An annular groove 306 is provided on the periphery, and a through hole for liquid to return to the inner bag is provided in the annular groove 306. An annular rib extending downward is provided on the bottom edge of the first recess 304 . The annular rib can conflict with the joint side wall 222 of the inner bag joint 20 and exert a downward squeezing force on the joint side wall 222 .

The first one-way valve 40 is disposed in the first recess 304 so that the liquid in the inner bag 2 can only flow out through the first one-way valve 40 . The first one-way valve 40 includes a sealing portion 41 covering the first liquid outlet hole 305 and a fixing portion 42 connected to the sealing portion 41. Preferably, the fixing portion 42 is configured to extend into the annular groove 306 of the lower cover. A fixed ring, a number of connecting bridges 43 are provided between the fixed part 42 and the sealing part 41, the number of connecting bridges 43 is preferably 3-5, and there are gaps between the connecting bridges 43 for liquid to flow out.

Preferably, the sealing portion 41 has an upward arch structure to facilitate receiving the liquid flowing through the first liquid outlet 305 and forming an outward thrust.

The liquid outlet 50 is a cover structure provided in the first recess 304. The liquid outlet 50 includes a liquid outlet top wall 501 and a liquid outlet side wall 502 extending downward from the liquid outlet top wall 501. The liquid outlet 50 The side wall 502 can extend into the first recess 304 of the lower cover and limit the liquid outlet 50 . The middle part of the top wall 501 of the liquid outlet is recessed downward and a first column 503 is provided in the middle of the top wall 501 of the liquid outlet. The first column 503 is provided with a hollow structure to form a second liquid outlet hole on the first column 503 . Setting the top wall 501 of the liquid outlet into a downward concave structure is beneficial to simplifying the overall structure of the bottle cap assembly and reducing the thickness of the bottle cap assembly.

In order to fix the liquid outlet nozzle 50 on the lower cover and prevent the liquid outlet nozzle 50 from falling off from the lower cover, the side walls 502 of the liquid outlet nozzle and the side walls of the first recess 304 are fixed to each other by engaging slots and clamping ribs. connect. Specifically, the side wall 502 of the liquid outlet is provided with protruding clamping ribs, and the side wall of the first recessed portion 304 is provided with a clamping groove corresponding to the clamping rib; or, the side wall of the first recessed portion 304 is provided with a clamping groove. The wall is provided with protruding clamping ribs, and the side wall 502 of the liquid outlet is provided with clamping grooves corresponding to the clamping ribs.

In order to limit the depth of the side wall 502 of the liquid outlet into the first recess 304 of the lower cover, the edge of the top wall 501 of the liquid outlet is provided with a clamping structure 504 that laterally protrudes from the side wall 502 of the liquid outlet. The corresponding , the lower cover top wall 301 is also provided with a second recess 308. The first recess 304 is provided on the second recess 308 so that a step 309 capable of supporting is formed between the first recess 304 and the top wall 301 of the lower cover. When the side wall 502 of the liquid outlet nozzle extends into the first recess 304 of the lower cover, the clamping structure 504 is supported on the step 309 , thereby limiting the extent to which the liquid outlet nozzle 50 extends into the first recess 304 . After the liquid outlet 50 and the lower cover are combined, a cavity structure is formed between the two, and the first one-way valve 40 is disposed in the cavity. There is a gap between the fixed part 42 of the first one-way valve 40 and the side wall 502 of the liquid outlet, so that the first one-way valve 40 can move in the cavity between the liquid outlet 50 and the lower cover to facilitate the movement of the first one-way valve 40 in the cavity between the liquid outlet 50 and the lower cover. A one-way valve 40 opens or closes the first liquid outlet 305.

The upper cover 60 is connected to the lower cover and can be covered on the lower cover. The upper cover 60 includes an upper cover top wall 601 and an upper cover side wall 602. A second column 603 is provided in the middle of the upper cover top wall 601. The second column 603 is opposite to the first column 503, and the diameter of the second column 603 is slightly smaller than that of the first column 503. 2. The inner diameter of the liquid outlet hole. An upper cover annular wall 604 extending downward is provided between the upper cover side wall 602 and the second upright column 603. When the upper cover 60 is closed on the lower cover, the second upright column 603 extends into the first upright column 503. In order to block the second liquid outlet hole and form a first sealing structure, at the same time, the annular wall 604 of the upper cover is pressed against the top wall 501 of the liquid outlet nozzle to form a second sealing structure.

Since the middle part of the top wall 501 of the liquid outlet is recessed downward, the peripheral edge of the top wall 501 of the liquid outlet is higher than the middle part of the top wall 501 of the liquid outlet, and the upper cover annular wall 604 is pressed against the peripheral edge of the top wall 501 of the liquid outlet. Therefore, the height of the upper cover annular wall 604 is shortened, so that the height of the upper cover annular wall 604 is smaller than the height of the upper cover side wall 602 .

As shown in Figure 5, the bottle mouth of the bottle body 1 is provided with an annular bottle mouth side wall 10, and the inside of the bottle mouth side wall 10 is provided with a third connecting portion 11. The third connecting portion 11 is connected to the inner bag connector 20. The first connecting parts 22 cooperate with each other. Specifically, the joint supporting part 221 of the first connecting part 22 is supported on the third connecting part 11 . The third connecting part 11 is preferably an annular platform provided on the inner wall of the bottle mouth side wall 10 , and the annular platform extends radially inward along the periphery of the bottle mouth side wall 10 . Of course, the third connecting part 11 can also be It is a point-like structure or a mutually spaced line segment structure distributed on the side wall 10 of the bottle mouth.

A fourth connection part 12 connected to the lower cover is provided on the outside of the bottle mouth side wall 10. The fourth connection part 12 is provided above the third connection part 11 and is connected to the lower cover connection device. Preferably, the lower cover connecting device is an internal thread provided on the lower cover side wall 302 , and the fourth connecting portion 12 is an external thread capable of engaging with the internal thread of the lower cover side wall 302 . In addition to threaded connection, the fourth connection part 12 and the lower cover connection device may also adopt a snap connection or other connection method.

The bottle 1 is provided with a ventilation hole, and a second one-way valve 13 is provided at the ventilation hole. The second one-way valve 13 is provided on the side wall of the bottle 1 or at the bottom of the bottle 1. The second one-way valve 13 is provided at the ventilation hole. The valve 13 allows the outside air of the bottle 1 to flow into the bottle 1 , but cannot allow the air in the bottle 1 to flow out of the bottle 1 . Preferably, the bottle body 1 is provided with a recessed area, and the second one-way valve 13 is disposed in the recessed area to prevent the second one-way valve 13 from falling off due to external force during transportation or use.

The second one-way valve 13 includes a valve body 131 and a valve core 132. The valve body 131 is generally in the form of a hollow cylindrical structure and is embedded in the ventilation hole on the bottle 1. The two ends of the valve body 131 are respectively the air inlet 1311 and the valve core 132. Air outlet 1312. The valve core 132 is a spherical structure and is placed in the valve body 131. In a natural state, the valve core 132 is away from the air inlet 1311 and allows external air to enter the bottle 1 through the second one-way valve 13. When the bottle body is squeezed, the air pressure in the bottle increases and causes the valve core 132 to block the air inlet 1311 to prevent the gas in the bottle from flowing out.

The steps and principles of using this utility model are as follows:

Step (1): Provide the fresh-keeping bottle as mentioned above and ensure that the second connecting portion 23 of the inner bag joint 20 is sealed with the inner bag 2 .

Step (2): Put the inner bag 2 into the bottle body 1, and connect the inner bag joint 20 to the bottle mouth. For example, the joint support part 221 of the inner bag joint 20 is supported on the third connecting part 11 of the bottle mouth.

Step (3): Fill the inner bag 2 with fillings such as soy sauce.

Step (4): Install the lower cover of the bottle cap assembly on the bottle mouth side wall 10 or the joint side wall 222. At this time, the first recess 304 on the lower cover extends into the bottle mouth or joint side wall 222. Preferably, when the height of the joint side wall 222 is lower than the bottle mouth side wall 10 , the first recess 304 can come into conflicting contact with the inner bag joint 20 and exert downward pressure on the inner bag joint 20 to push the inner bag joint 20 Stably fixed on the third connecting part 11 of the bottle mouth. The first one-way valve 40 is installed in the first recess 304 of the lower cover, and the liquid outlet 50 is covered in the first recess 304 so that it is located above the first one-way valve 40 . Finally, the upper cover 60 is closed on the lower cover, and the second column 603 of the upper cover 60 extends into the first column 503 of the liquid outlet 50 .

Step (5): Close the vent hole of the bottle body 1 to facilitate the transportation of the fresh-keeping bottle.

When the filling in the inner bag 2 needs to be used, the upper cover 60 is opened, and the liquid in the inner bag 2 passes through the inner bag connector 20 and the first liquid outlet hole 305 on the lower cover in sequence, and then opens the first one-way valve. 40, and finally flows out through the second liquid outlet hole on the liquid outlet 50. At the same time, as the liquid in the inner bag 2 decreases, the inner bag 2 shrinks accordingly, causing a negative pressure in the bottle 1. The outside air of the fresh-keeping bottle enters the bottle 1 through the second one-way valve 13 under the action of negative pressure. , thereby ensuring that no air enters the inner bag 2, and can achieve a better preservation effect on the liquid in the inner bag 2.

Example 2

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figure 6, in this embodiment, the bottle mouth of the bottle body 1 is also provided with an annular bottle mouth side wall 10, and the inside of the bottle mouth side wall 10 is also provided with a third connecting portion 11. The third connecting portion 11 Cooperating with the first connecting portion 22 of the inner bag connector 20, the third connecting portion 11 is an annular platform provided on the inner wall of the bottle mouth side wall 10, and the annular platform is radially inward along the circumference of the bottle mouth side wall 10. Extending, a first fixing device 223 is provided between the joint side wall 222 of the first connecting part 22 and the bottle mouth side wall 10 .

The first fixing device 223 includes a latching protrusion provided on the side wall 10 of the bottle mouth and a latching groove provided on the joint side wall 222. The latching protrusion is inserted into the latching groove to fix and position the inner bag joint 20. , to prevent the inner bag joint 20 from slipping or being displaced when filling liquid or being used by the user. As an alternative, the positions of the latching groove and the latching protrusion can be interchanged, that is, the latching groove is provided on the side wall 10 of the bottle mouth, and the latching protrusion is provided on the joint side wall 222 .

Example 3

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figure 7, in this embodiment, the bottle mouth of the bottle body 1 is also provided with an annular bottle mouth side wall 10, and the inside of the bottle mouth side wall 10 is also provided with a third connecting portion 11. The third connecting portion 11 Cooperating with the first connecting portion 22 of the inner bag connector 20, the third connecting portion 11 is an annular platform provided on the inner wall of the bottle mouth side wall 10, and the annular platform is radially inward along the circumference of the bottle mouth side wall 10. Extending, a second fixing device 224 is provided between the first connecting part 22 and the third connecting part 11 .

Specifically, the second fixing device 224 includes a latching groove provided on the third connecting part 11 and a latching protrusion provided at the bottom of the joint support part 221 of the first connecting part 22 , and the latching protrusion is engaged in the latching groove. , fixing and positioning the inner bag joint 20 to prevent the inner bag joint 20 from slipping or being displaced when filling liquid or being used by the user.

As an alternative, the positions of the latching groove and the latching protrusion may be interchanged, that is, the latching groove is provided at the bottom of the joint support part 221 , and the latching protrusion is provided on the third connecting part 11 .

Example 4

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figures 8-10, the inner bag joint 20 includes a first connecting part 22 and a second connecting part 23. The structure of the second connecting part 23 is the same as that in Embodiment 1. The first connecting part 22 includes a transverse The joint support part 221 and the joint side wall 222 arranged longitudinally are provided, and the joint support part 221 and the joint side wall 222 are connected or integrally formed. The joint support portion 221 protrudes laterally from the joint side wall 222 , and the height of the joint side wall 222 is higher than the bottle mouth side wall 10 so as to be connected with the bottle cap assembly. A fifth connection part 225 is provided on the outside of the joint side wall 222 and can cooperate with the lower cover connection device. The fifth connection part 225 is a thread or a rib structure.

The side wall of the bottle mouth 10 is provided with a fixing groove 14 with an opening facing the joint support part 221. The fixing groove 14 is generally C-shaped. The fixing groove 14 is composed of the side wall of the bottle mouth 10 and a third connecting part 11 arranged laterally. , surrounded by a laterally inward flange 15 provided at the upper end of the bottle mouth side wall 10. The joint support portion 221 extends into the fixing groove 14 and forms a fixed connection with the fixing groove 14 .

When this embodiment is used, it is only necessary to place the lower cover on the joint side wall 222 of the inner bag joint 20, so that the fifth connection portion 225 on the joint side wall 222 cooperates with the lower cover connection device, such as the fifth connection The portion 225 is engaged with the lower cover connecting device through threads, as shown in Figure 11-13, or through clamping ribs, as shown in Figure 8-10.

When the fifth connection part 225 is threadedly engaged with the lower cap connection device, in order to prevent the inner bag joint 20 from rotating with the bottle cap assembly, a positioning device is provided between the joint support part 221 and the fixing groove 14 in this embodiment. The device includes a positioning groove 229 provided on the joint support part 221 and a positioning block 16 provided in the fixing groove 14. The positioning block 16 extends into the positioning groove 229.

As an alternative, the positions of the positioning groove 229 and the positioning block 16 may be interchanged, that is, the positioning groove 229 is provided in the fixing groove 14 and the positioning block 16 is provided on the joint support part 221 .

Example 5

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figures 14-16, the inner bag joint 20 includes a first connecting part 22 and a second connecting part 23. The structure of the second connecting part 23 is the same as that in Embodiment 1. The first connecting part 22 includes a transverse The joint support part 221 and the joint side wall 222 arranged longitudinally are provided, and the joint support part 221 and the joint side wall 222 are connected or integrally formed.

The height of the joint side wall 222 is higher than the bottle mouth side wall 10 so as to be connected with the bottle cap assembly. The joint side wall 222 is higher than the upper end of the bottle mouth side wall 10 and is provided with a fifth connector that can cooperate with the lower cap connection device. Connection part 225. The lower end of the joint side wall 222 is connected to the bottle mouth side wall 10 through threaded connection or clamping. Specifically, a sixth connecting portion 226 is provided outside the lower end of the joint side wall 222 and can be connected to the bottle mouth side wall 10. The fifth connecting portion 226 is connected to the bottle mouth side wall 10. The connecting part 225 and the sixth connecting part 226 are rib structures or threaded structures with opposite directions. Therefore, when the bottle cap assembly is threadedly fixed to the joint side wall 222, the inner bag joint 20 will not be removed from the bottle mouth by rotating the bottle cap assembly. Spin out. The bottle mouth side wall 10 is provided with a third connection portion 11 arranged laterally, and the third connection portion 11 is used to support and support the joint support portion 221. A seventh connecting portion 17 that can be connected to the joint side wall 222 is provided on the inner side of the bottle mouth side wall 10 . The seventh connecting portion 17 is a thread or rib structure that can engage with the sixth connecting portion 226 .

In order to enhance the strength of the inner bag joint 20, a reinforcing wall 227 is provided at the sixth connecting portion 226, so that the wall thickness of the sixth connecting portion 226 can be significantly increased.

Example 6

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figures 17-18, the inner bag joint 20 includes a first connecting part 22 and a second connecting part 23. The structure of the second connecting part 23 is the same as that in Embodiment 1. The first connecting part 22 includes a transverse The joint support part 221 and the joint side wall 222 arranged longitudinally are provided, and the joint support part 221 and the joint side wall 222 are connected or integrally formed.

The joint side wall 222 is disposed in the bottle mouth and fits with the bottle mouth side wall 10. The upper end of the joint side wall 222 is provided with a laterally outward flange 228, and the flange 228 is set up on the upper edge of the bottle mouth side wall 10, as shown in As shown in Figure 18.

A first fixing device 223 is provided between the joint side wall 222 and the bottle mouth side wall 10 . The first fixing device 223 is preferably provided at the upper end of the joint side wall 222 and the bottle mouth side wall 10 . Specifically, the first fixing device 223 includes a latching groove provided on the side wall 10 of the bottle mouth and a latching protrusion provided on the side wall 222 of the joint. Fixing and positioning are performed to prevent the inner bag joint 20 from slipping or being displaced when filling liquid or being used by the user.

As an alternative, the positions of the latching groove and the latching protrusion can be interchanged, that is, the latching groove is provided on the joint side wall 222 and the latching protrusion is provided on the bottle mouth side wall 10 .

Example 7

This embodiment further improves part of the structure based on Embodiment 1. The components not mentioned in this embodiment are the same as those in Embodiment 1 and will not be described again. The same components are used in the same parts of this embodiment as in Embodiment 1. , description of connection method and structure.

As shown in Figures 19-20, the inner bag joint 20 includes a first connecting part 22 and a second connecting part 23. The structure of the second connecting part 23 is the same as that in Embodiment 1. The first connecting part 22 includes a transverse The joint support part 221 and the joint side wall 222 arranged longitudinally are provided, and the joint support part 221 and the joint side wall 222 are connected or integrally formed.

The joint side wall 222 is disposed in the bottle mouth and fits with the bottle mouth side wall 10. The upper end of the joint side wall 222 is provided with a laterally outward flange 228, and the flange 228 is set up on the upper edge of the bottle mouth side wall 10, as shown in As shown in Figure 20.

The joint side wall 222 and the bottle mouth side wall 10 are connected by threads or clamps. Specifically, a sixth connecting portion 226 is provided on the outside of the lower end of the joint side wall 222 and can be connected with the bottle mouth side wall 10. The six connecting parts 226 have a threaded or rib structure. The side wall 10 of the bottle mouth is provided with a third connection part 11 arranged laterally. The third connection part 11 is used to support and support the joint support part 221. The joint support part 221 also has the function of determining whether the joint support part 221 is assembled in place. . A seventh connecting portion 17 is provided on the inner side of the bottle mouth side wall 10 and can be connected to the joint side wall 222 . The seventh connecting portion 17 is a thread or rib structure that can engage with the sixth connecting portion 226 .

In order to enhance the strength of the inner bag joint 20, a reinforcing wall 227 is provided at the sixth connecting portion 226, so that the wall thickness of the sixth connecting portion 226 can be significantly increased.

Obviously, the above-mentioned embodiments of the present invention are only examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, other different forms of changes or changes can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims (41)

1. A fresh-keeping bottle, including a bottle body and a bottle cap assembly. The bottle body is provided with a bottle mouth, and the bottle mouth is surrounded by the side walls of the bottle mouth. It is characterized in that: the fresh-keeping bottle also includes an inner portion provided in the bottle body. bag and an inner bag joint connected to the inner bag. The inner bag joint includes a joint body, a first connecting portion provided at the upper end of the joint body, and a second connecting portion provided at the lower end of the joint body. The joint body is provided with a longitudinal through The first through hole of the joint body, the first connecting part is connected to the bottle mouth, the second connecting part is connected to the inner bag, and the bottle cap assembly is installed on the first connecting part or the side wall of the bottle mouth. 2. The fresh-keeping bottle according to claim 1, wherein the outer diameter of the first connecting part is larger than the joint body and larger than the second connecting part. 3. The fresh-keeping bottle according to claim 1, characterized in that the first connection part includes a joint support part protruding from the joint body in the transverse direction, and the joint support part is provided with a joint extending upward in the longitudinal direction. Joint side wall. 4. The fresh-keeping bottle according to claim 3, characterized in that a first fixing device is provided between the joint side wall and the bottle mouth side wall. 5. The fresh-keeping bottle according to claim 4, characterized in that the first fixing device includes a latching protrusion provided on the side wall of the bottle mouth and a latching groove provided on the side wall of the joint, and the latching protrusion is inserted into the latching groove. in the groove; or, the first fixing device includes a latching groove provided on the side wall of the bottle mouth and a latching protrusion provided on the side wall of the joint, and the latching protrusion is engaged in the latching groove. 6. The fresh-keeping bottle according to claim 3, characterized in that the height of the side wall of the joint is lower than the height of the side wall of the bottle mouth. 7. The fresh-keeping bottle according to claim 3, wherein the height of the joint side wall is higher than the height of the bottle mouth side wall, and a fifth connection portion capable of being connected to the bottle cap assembly is provided on the outside of the joint side wall. 8. The fresh-keeping bottle according to claim 7, characterized in that the fifth connecting part is a thread or a rib structure. 9. The fresh-keeping bottle according to claim 3 or 7, characterized in that the side wall of the bottle mouth is provided with a fixing groove with an opening facing the joint support part, and the joint support part protrudes from the joint side in the transverse direction. wall and extends into the fixing groove. 10. The fresh-keeping bottle according to claim 9, characterized in that a positioning device is provided between the joint support part and the fixing groove, and the positioning device includes a positioning groove provided on the joint support part and a positioning groove provided on the fixing groove. The positioning block extends into the positioning groove, or the positioning device includes a positioning block provided on the joint support part and a positioning groove provided in the fixed groove, and the positioning block extends into the positioning groove. 11. The fresh-keeping bottle according to claim 3 or 7, characterized in that the joint side wall and the bottle mouth side wall are fixedly connected through threads or clamping ribs. 12. The fresh-keeping bottle according to claim 3, characterized in that the joint side wall is disposed in the bottle mouth and fits with the bottle mouth side wall, and the upper end of the joint side wall is provided with a transverse outward flange. Set up on the upper edge of the side wall of the bottle mouth. 13. The fresh-keeping bottle according to claim 3, wherein a third connecting portion for supporting the joint support portion is provided on the inner side of the side wall of the bottle mouth. 14. The fresh-keeping bottle according to claim 13, wherein the third connection part is an annular platform provided on the inner wall of the side wall of the bottle mouth. 15. The fresh-keeping bottle according to claim 13, wherein the third connecting portion is a point-like structure or a mutually spaced line segment structure distributed on the side wall of the bottle mouth. 16. The fresh-keeping bottle according to claim 1, wherein a fourth connection part connected to the lower cover is provided on the outside of the side wall of the bottle mouth, and the fourth connection part is provided above the third connection part. 17. The fresh-keeping bottle according to claim 1, characterized in that the bottle body is provided with a ventilation hole, and the ventilation hole is provided with a second one-way valve that allows external air to enter the bottle body. 18. The fresh-keeping bottle according to claim 13, wherein a second fixing device is provided between the first connection part and the third connection part. 19. The fresh-keeping bottle according to claim 18, characterized in that the second fixing device includes a latching groove provided on the third connecting part and a latching protrusion provided at the bottom of the joint support part, and the latching protrusion is clipped into In the card slot; alternatively, the second fixing device includes a card protrusion provided on the third connecting part and a card groove provided at the bottom of the joint support part, and the card protrusion is engaged in the card groove. 20. The fresh-keeping bottle according to claim 1, wherein a slope transition is provided between the first connecting part and the first through hole. 21. The fresh-keeping bottle according to claim 20, wherein a support plate is provided on the joint body near one end of the first connecting portion and below the slope. 22. The fresh-keeping bottle according to claim 21, wherein the support plate extends outward around the joint body and has an elliptical track-like structure, and the diameter of the narrowest part of the support plate is smaller than the outer diameter of the first connecting portion. 23. The fresh-keeping bottle according to claim 21, wherein a support wall is provided between the inclined surface and the support plate. 24. The fresh-keeping bottle according to claim 1, wherein the second connecting portion includes a connecting rib surrounding the joint body and protruding from the joint body. 25. The fresh-keeping bottle according to claim 24, wherein an extension is provided on the symmetrical side of the connecting rib. 26. The fresh-keeping bottle according to claim 1, wherein the bottle cap assembly includes a lower cap and an upper cap. 27. The fresh-keeping bottle according to claim 26, characterized in that the lower cover is provided with a lower cover top wall and a lower cover side wall extending downward from the peripheral edge of the top surface of the lower cover, and the lower cover top wall is provided with a lower cover top wall. The first recessed portion is recessed and can extend into the bottle mouth, and the first recessed portion is provided with a first liquid outlet hole communicated with the inner bag connector. 28. The fresh-keeping bottle according to claim 27, wherein an annular groove is provided on the periphery of the first recess. 29. The fresh-keeping bottle according to claim 27, wherein the first connection part includes a joint support part protruding from the joint body in the transverse direction, and the joint support part is provided with a joint extending upward in the longitudinal direction. On the joint side wall, the bottom surface of the first recess is provided with an annular convex rib extending downward, and the annular convex rib can conflict with the joint side wall of the inner bag joint. 30. The fresh-keeping bottle according to claim 27, wherein a first one-way valve is provided in the first recess. 31. The fresh-keeping bottle according to claim 30, wherein the first one-way valve includes a sealing part covering the first liquid outlet hole and a fixing part connected to the sealing part. 32. The fresh-keeping bottle according to claim 31, characterized in that an annular groove is provided on the periphery of the first recessed portion, and the fixing portion is configured as a fixing ring that can extend into the annular groove of the lower cover, and the annular groove is There is a through hole for liquid return. 33. The fresh-keeping bottle according to claim 31, wherein a plurality of connecting bridges are provided between the fixing part and the sealing part, and there are gaps between the connecting bridges for liquid to flow out. 34. The fresh-keeping bottle according to claim 31, wherein the sealing portion has an upward arch structure. 35. The fresh-keeping bottle according to claim 27, wherein the first recess is provided with a liquid outlet, and the liquid outlet includes a top wall of the liquid outlet and an outlet extending downward from the top wall of the liquid outlet. The side wall of the liquid nozzle and the side wall of the liquid outlet nozzle can extend into the first recess of the lower cover and limit the position of the liquid outlet nozzle. 36. The fresh-keeping bottle according to claim 35, wherein a first upright column is provided on the top wall of the liquid outlet, and the first upright column is configured as a hollow structure. 37. The fresh-keeping bottle according to claim 35, characterized in that the top wall of the liquid outlet is configured as a downward concave structure. 38. The fresh-keeping bottle according to claim 35, wherein the side wall of the liquid outlet nozzle is snap-fitted with the side wall of the first recess. 39. The fresh-keeping bottle according to claim 35, wherein the periphery of the top wall of the liquid outlet is provided with a clamping structure laterally protruding from the side wall of the liquid outlet, and the top wall of the lower cover is also provided with The second recess, the first recess is provided on the second recess so that a step that can play a supporting role is formed between the first recess and the top wall of the lower cover. When the side wall of the liquid outlet extends into the first recess of the lower cover, , the card edge structure is supported on the second concave portion. 40. The fresh-keeping bottle according to claim 36, characterized in that the upper cover includes a top wall and a side wall of the upper cover, and the top wall of the upper cover is provided with a second post that can be inserted into the first column in the closed state. Pillars. 41. The fresh-keeping bottle according to claim 40, wherein a downwardly extending upper cover annular wall is provided between the upper cover side wall and the second upright column. When the upper cover and the lower cover are in a closed state, The annular wall of the upper cover can press against the top wall of the liquid outlet.