CN212171014U - Ventilation air bag and preparation mold thereof - Google Patents

Abstract

The utility model relates to a gasbag of taking a breath and preparation mould thereof, the gasbag of taking a breath includes the gasbag body, this internal appearance gas inner chamber that is equipped with of gasbag, the front end of gasbag body is equipped with the one-way inlet channel and the one-way runner of giving vent to anger with appearance gas inner chamber intercommunication, be equipped with the ball in the inlet channel and the runner of giving vent to anger respectively, admit air, give vent to anger the runner and include the pipeline and locate the interior blocking ring that is little than the pipeline internal diameter of pipe way, the protruding a plurality of restriction point of runner inner wall, the gas circulation of runner is opened or closed in blocking ring and the cooperation of ball, inlet channel restriction point restriction ball drops appearance gas inner chamber and keeps the runner to ventilate, the blocking ring of the runner of giving vent to anger is opened or is closed the gas circulation of the runner with. The utility model discloses simple structure, at gasbag body integrated into one piece inlet channel and the runner of giving vent to anger, utilize the ball respectively in the effect of one-way air inlet and one-way giving vent to anger in order to reach the activity between occlusion ring and spacing point, simplified overall structure.

Description

A kind of ventilation air bag and its preparation mold

technical field

The utility model relates to the technical field of footwear, in particular to a ventilation airbag and a mold for preparing the same.

Background technique

When people walk, their feet bear the weight of the whole body and transfer this weight to the ground. The opposite ground will also generate a reaction force to the feet, so we will feel sore feet after walking for a while. In order to solve this problem, The shoe factory will add some ventilation airbags to the soles, and the airbags will increase the resilience to achieve shock absorption, so as to improve the comfort of the wearer's walking. At present, the airbags are made of TPU as a hollow body, which needs to be cut and then manually glued. The knot is formed into a balloon shape, and the balloon body is cut out to form a joint communicating with the gas-containing inner cavity of the balloon body; a trachea is inserted at the joint, and the end of the trachea is inserted into a one-way valve core. There are many airbag components, which require manual assembly, complex structure and high production cost.

Utility model content

In order to solve the above problems, the utility model provides a ventilation air bag with simple structure, few components and simple assembly, and a preparation mold thereof.

In order to achieve the above purpose, the present utility model adopts the following technical solutions: a ventilation airbag, comprising an airbag body, the airbag body is provided with an air-accommodating inner cavity, and the front end of the airbag body is provided with an air-accommodating inner cavity. The one-way air inlet flow channel and the one-way outlet air channel are connected, the airbag body, the one-way air inlet flow channel and the one-way outlet air channel are integrally formed, and the air inlet flow channel is provided with a first ball, and the first An intake blocking ring is arranged between the ball and the air inlet, the inner diameter of the intake flow channel is larger than the diameter of the first ball, the inner diameter of the intake blocking ring is smaller than the diameter of the first ball, and the inner diameter of the outlet flow channel is smaller than that of the first ball. There is a second ball, and an outlet blocking ring is arranged between the second ball and the outlet of the gas-containing inner cavity, the inner diameter of the outlet flow channel is larger than the diameter of the second ball, and the inner diameter of the outlet blocking ring is smaller than the The diameter of the ball.

There are balls in the inlet flow channel and the outlet flow channel respectively. The inlet and outlet flow channels include a pipe and a blocking ring which is smaller than the inner diameter of the pipe. The inner wall of the flow channel is raised with a number of limit points. The blocking ring and the ball Cooperate with opening or closing the gas flow of the flow channel, the limit point of the intake flow channel restricts the ball from falling into the gas chamber and keeps the flow channel ventilated, and the blocking ring of the outlet flow channel cooperates with the ball to open or close the gas flow of the outlet flow channel , the outflow channel limit point restricts the ball from running out of the airbag and keeps the flow channel ventilated. The air inlet and outlet air channels are integrally formed in the airbag body, and the movement of the ball between the blocking ring and the limit point is used to achieve the functions of one-way air intake and one-way air outlet, which simplifies the overall airbag structure and is airtight. Sex is better than traditional airbags.

Preferably, the surface of the inner wall of the intake runner is provided with a number of first limit points between the inlet of the air-accommodating cavity and the first ball, the first limit points protrude from the inner wall of the intake runner, and several The distance between the tops of the protrusions of a limit point is smaller than the diameter of the first ball, and a plurality of second limit points are arranged between the air outlet and the second ball on the inner wall surface of the outlet flow channel. The points are protruding on the inner wall of the outflow channel, and the distance between the protruding tops of the plurality of second limiting points is smaller than the diameter of the second ball.

The inlet flow channel and the outlet flow channel are a pipeline with the same inner diameter, the diameter of the first ball and the second ball are smaller than the inner diameter of the pipeline, and the first and second limit points limit the first and second balls sliding out of the flow channel. At the same time, the flow passage is kept ventilated, and the intake/exhaust blocking ring restricts the ball from sliding out of the flow passage and blocks the flow passage at the same time.

Preferably, the gas-containing inner cavity is filled with a breathable support filler.

Preferably, the airbag body is made of rubber.

A mold for manufacturing a ventilating air bag, the air bag mold includes an upper mold, a middle plate, and a lower mold, the middle plate is arranged between the upper mold and the lower mold, and the upper mold and the lower mold are arranged in parallel and opposite to each other and closely adhered The upper and lower molds are each provided with at least one concave mold cavity, and the upper and lower surfaces of the middle plate are provided with protruding upper and lower mold cores at positions corresponding to the concave mold cavity. The upper die cavity and the middle plate core are closed to form the upper die cavity, the lower die concave cavity and the middle plate lower core are closed to form the lower die cavity, and the upper die cavity and the lower die core are closed. The chip cavity is provided with a reserved slot for the inlet flow channel and a reserved slot for the outlet flow channel. The upper mold core and the concave part cavity, the lower mold core and the concave part cavity are provided with a gentle slope, which effectively reduces the wrinkling after the upper film and the lower film are connected.

Preferably, the airbag mold further comprises an inlet runner core and an outlet runner core matched with the reserved slots for the inlet runner, and the inlet runner core and the outlet runner core are a round bar , the round bar is provided with a blocking groove, and one side of the blocking groove is provided with a limit hole. After the upper mold and the lower mold are clamped, the block groove forms a block ring in the flow channel, and the limit hole forms limit point.

The utility model simplifies the production process of the airbag through the mold, the inlet flow channel mold core and the outlet flow channel mold core adopt the same mold core, the mold structure is more optimized, and the cost is further saved and the production efficiency is improved.

A preparation method of a ventilation air bag, comprising the following steps:

Step 1: Preheating the mold: first preset the vulcanization time on the vulcanizer to be 50s to 200s, and the vulcanization temperature to be 150 to 200°C, and then preheat the upper mold, the middle plate, and the lower mold. The preheating temperature is the preset temperature of the vulcanizer, and the preheating time is 40min～3h;

Step 1: Preheating the mold: preheating the upper mold, the middle plate and the lower mold;

Step 2: Load the rubber material and close the mold: After the mold temperature reaches the set value, separate the upper mold, the middle plate and the lower mold, put the lower rubber material (solid) into the concave cavity of the lower mold, and then put the middle The plate is placed on the lower mold, so that the lower mold core of the middle plate is attached to the surface of the lower rubber material, and then the upper rubber material (solid) is placed on the surface of the mold core on the middle plate, and then the upper mold is covered on the middle plate, so that the upper cover is recessed The mold cavity is attached to the surface of the upper rubber material. At this time, the material type matches the concave mold cavity so that the rubber material can fill the cavity;

Step 3: Vulcanization molding: put the mold after the mold clamping in step 2 into the vulcanizer, start the vulcanizer to close the mold, heat the mold according to the preset vulcanization temperature of the vulcanizer, and the upper rubber material melts and flows to the upper sheet. Cavity, the upper part of the airbag with the front inlet runner and outlet runner reserved groove and the middle part is a hemispherical cavity is formed in the upper part cavity, the lower rubber material melts and flows into the lower part cavity, in the lower part cavity forming a lower part of the airbag with a reserved groove for the front air inlet flow channel and the outlet flow channel and a hemispherical concave cavity in the middle;

Step 4: Open the mold: the upper mold and the lower mold are separated and pulled away from the middle plate, and a breathable support material is placed in the hemispherical cavity of the lower part of the airbag;

Step 5: Put the inlet runner mold core and the outlet runner mold core into the reserved slots for the inlet runner and outlet runner, and put the molds of the upper mold and the lower mold into the vulcanizer for pressure heating, The edges of the airbag upper sheet and the airbag lower sheet are hot-melted and bonded, and the intake runner mold core and the outlet runner mold core are extracted to form a basic airbag with an intake runner and an outlet runner;

Step 6: Insert the two balls into the air inlet runner and the outlet runner respectively. The ball in the inlet runner is between the blocking ring and the inner cavity of the gas container, and the ball in the outlet runner is between the blocking ring and the air outlet. Preparation of airbags.

The beneficial effects of the utility model are as follows: the airbag of the utility model adopts an integrally formed air inlet flow channel and an outlet flow channel, and the air inlet flow channel is composed of a circular pipe with an inner diameter and a first ball with a diameter smaller than that of the pipe. There are limit points between the gas chambers, the limit points protrude on the inner wall of the flow channel, the distance between the tops of the protrusions of several limit points is smaller than that of the balls, and the limit points restrict the balls from sliding out of the flow channel while maintaining the flow. For channel ventilation, a blocking ring is arranged between the ball and the air inlet, the inner diameter of the blocking ring is smaller than that of the ball, and the blocking ring restricts the ball from sliding out of the flow channel and blocks the flow channel at the same time. The outlet air passage is composed of a circular pipe with an inner diameter and a second ball with a diameter smaller than that of the pipe. A blocking ring is arranged between the ball and the gas-containing inner cavity. The inner diameter of the blocking ring is smaller than that of the ball, and the blocking ring restricts the sliding of the ball. The flow channel is blocked at the same time. There is a limit point between the ball and the air outlet. The limit point is raised on the inner wall of the flow channel. The distance between the raised tops of several limit points is smaller than that of the ball, and the limit point restricts the circle. The bead slides out of the flow channel while maintaining the flow channel ventilation. The utility model has a simple structure, the air inlet flow channel and the outlet flow channel are integrally formed in the airbag body, and the movement of the ball between the blocking ring and the limit point is used to achieve the functions of one-way air intake and one-way air outlet, which not only ensures the The air flow control effect of the utility model simplifies the overall structure.

The airbag of the utility model can realize two modes. The first mode is that the airbag discharges the sweat in the shoe out of the shoe. When the air inlet flow channel passes through the duct, the airbag air inlet is arranged in the shoe. Because the air inlet and outlet flow channels adopt a one-way design , Open and close the flow channel through the ball, the intake flow channel can only intake air, and the outlet flow channel can only exhaust air. When the human body is walking, the airbag is squeezed through the feet to compress and expand, which can remove the damp sweat in the shoes. The air is exhausted out of the shoes, keeping the feet dry and comfortable, and avoiding the smell of the shoes. Mode 2: The air bag introduces the air from the outside of the shoes into the shoes. , Through the compression and expansion of the air bag, the outside air is gradually inhaled into the shoe, thereby playing the role of ventilation and ventilation in the shoe.

The preparation process of the utility model is simple. First, the middle plate is arranged between the upper mold and the lower mold to form the airbag upper sheet and the airbag lower sheet, and then the middle plate is pulled away, and the air inlet flow channel mold core and the outlet flow channel mold core are placed in place. Put the upper rubber skin and the lower rubber skin into the airway reserved grooves of the upper rubber skin and the lower rubber skin, and bond the edges of the upper rubber skin and the lower rubber skin to obtain an integrally formed air inlet flow channel and an air outlet flow channel airbag which are communicated with the gas-containing inner cavity. Then, the blocked balls are respectively inserted into the first ball chamber section and the second ball chamber section. Since the flow channel is made of rubber material, the blocked ball is easily inserted into the flow channel, the preparation is simple, and the production efficiency is high. The traditional air bag has many disadvantages, and the integrated structure of the inlet and outlet air passages is adopted to avoid that the one-way valve core of the existing air bag cannot achieve the ventilation effect due to the weak assembly, and the process of the present invention is simpler than the traditional air bag production process. The basic airbag is made through the mold, and the whole airbag is completed by inserting the ball.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the present invention.

Figure 2 is a front sectional view of the present invention.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 .

FIG. 4 is a schematic structural diagram of Embodiment 1 of an intake flow channel.

FIG. 5 is a schematic structural diagram of Embodiment 1 of the air outlet.

Figure 6 is an exploded structure diagram of the mold.

FIG. 7 is a perspective structural view of a runner core.

FIG. 8 is a schematic structural diagram of the second embodiment of the intake flow channel.

FIG. 9 is a schematic structural diagram of the second embodiment of the air outlet.

FIG. 10 is a perspective structural view of the second embodiment of the inlet runner mold core.

FIG. 11 is a perspective structural view of the second embodiment of the outlet runner mold core.

Description of reference numerals: 1. Airbag body; 11. Air inlet; 12. Air outlet; 13. Airbag upper sheet; 14. Airbag lower sheet; 3. Intake runner; 30. Intake blocking ring; 31. First intake section; 311. Intake section; 312. Intake blocking section; 32. Second intake section; 321. First circle Bead chamber section; 322. First air chamber connecting section; 323. First limit point; 33. First interface; 34. First ball; 4. Outflow channel; 40. Outlet blocking ring; 41 .The first gas outlet section; 411. The gas outlet section; 412. The second ball cavity section; 413. The second limit point; 42. The second gas outlet section; Second interface; 44. Second ball; 5. Upper mold; 6. Middle plate; 61. Upper mold core; 7. Lower mold; 71. Recess cavity; 8. Inlet runner mold core; Position hole; 82. Blocking groove; 9. Outflow channel mold core; 91. Second limit hole.

Detailed ways

Example 1

1-9, the present invention relates to a ventilation airbag, including an airbag body 1, the airbag body 1 is made of rubber, and the airbag body 1 includes an airbag upper sheet 13 and an airbag lower sheet 14. The airbag body 1 is provided with an air-accommodating cavity 2, and the air-accommodating cavity 2 is provided with a breathable supporting filler 21, such as sponge, leaves, etc., and the front end of the airbag body 1 is provided with an air inlet 11 and an air outlet 12. The gas-containing inner cavity 2 has an inlet 22 and an outlet 23. Between the air inlet 11 and the inlet 22 of the gas-containing inner cavity 2, there is a one-way air intake channel 3 that communicates with the gas-containing inner cavity 2. A one-way outflow channel 4 communicated with the gas-receiving inner cavity 2 is provided between the outlet 23 of the gas-accommodating cavity 2. The airbag body 1, the one-way air inlet flow channel 3 and the one-way outflow channel 4 are integrally formed. For manual assembly of multiple components, the utility model adopts the integrated molding process to simplify the components such as the traditional airbag interface and the one-way valve core, optimize the production process, improve the production efficiency, and simultaneously solve the problems such as the weak assembly of the existing airbag and the one-way valve core. , a first ball 34 is arranged in the air inlet runner 3, an inlet blocking ring 30 is arranged between the first ball 34 and the air inlet 11, and the blocking ring 30 is provided with a groove on the runner mold core The inner diameter of the air inlet runner 3 is larger than the diameter of the first ball 34, the inner diameter of the air inlet blocking ring 30 is smaller than the diameter of the first ball 34, and the outflow air A second ball 44 is arranged in the channel 4 , an outlet blocking ring 40 is arranged between the second ball 44 and the outlet 23 of the gas-containing inner cavity 2 , and the inner diameter of the outlet flow channel 4 is larger than the diameter of the second ball 44 , the inner diameter of the air outlet blocking ring 40 is smaller than the diameter of the second ball 44 . The structure of the intake runner and the outlet runner have the same structure, and the positions of the occlusion ring and the limit point are just opposite.

Preferably, a plurality of first limit points 323 are provided on the inner wall surface of the air inlet flow channel 3 between the inlet 22 of the air-accommodating cavity 2 and the first ball 34 , and the first limit points 323 protrude from the inlet. On the inner wall of the air flow channel 3, the first limit point 323 is formed with a limit hole on the flow channel mold core to cooperate with the upper and lower molds by rubber hot pressing. The distance between the raised tops of the first limit points 323 is smaller than the The diameter of the ball 34, the inner wall surface of the air outlet 4 is provided with a number of second limit points 413 between the air outlet 12 and the second ball 44, and the second limit points 413 protrude from the air outlet 4. On the inner wall, the distance between the protruding tops of the plurality of second limiting points 413 is smaller than the diameter of the second ball 44.

The inlet runner 3 and the outlet runner 4 are pipes with the same inner diameter, the diameters of the first ball 34 and the second ball 44 are smaller than the inner diameter of the pipe, and the first and second limit points 413 limit the first and second circles The ball slides out of the flow channel while keeping the flow channel ventilated, and the inlet/outlet blocking ring 40 restricts the ball from sliding out of the flow channel while blocking the flow channel.

A mold for manufacturing a ventilating air bag, the air bag mold includes an upper mold 5, a middle plate 6, a lower mold 7, and a runner core, the middle plate 6 is arranged on the upper mold 5 and the lower mold 7, and the upper mold 5 and the lower mold 7 are arranged parallel to each other and closely fit on the upper and lower surfaces of the middle plate 6. The upper mold 5 and the lower mold 7 are provided with four concave mold cavities. There are mirrored upper mold core 61 and lower mold core, the upper mold 5 and the upper mold core 61 are closed to form an upper mold cavity, and the lower mold 7 and the lower mold core are closed to form a lower mold cavity. The upper mold core 61 and the concave part cavity, the lower mold core and the concave part cavity are provided with a gentle slope, which effectively reduces the wrinkling after the upper film and the lower film are connected. There are reserved air channel grooves on the cavity and the lower plate. After the middle plate is pulled out, the upper and lower molds are combined into a reserved air channel. The runner mold core is inserted into the reserved air channel groove. The runner mold core is divided into two parts. The inlet runner mold core 8 and the outlet runner mold core 9, the inlet runner mold core 8 and the outlet runner mold core 9 have the same structure, and are all a round bar, and the round bar is provided with a blocking groove 82, There is a limit hole on one side of the blocking groove 82. The intake runner mold core 8 and the outlet runner mold core 9 make the front end of the airbag body form the intake and outlet runners. The intake runner mold core 8 and the outlet runner mold The positions of the blocking groove and the limiting hole of the core 9 are just reversed, that is, the inlet runner mold core 8 and the outlet runner mold core 9 are inserted in opposite directions.

A preparation method of a ventilation air bag, comprising the following steps:

Step 1: Preheating the mold: first set the vulcanization time as 50s～200s, the vulcanization temperature as 150℃～200℃, and the vulcanization pressure as 4MPa～20MPa; Preheating, the preheating temperature is the preset temperature of the vulcanizer, and the preheating time is 40min～3h;

Step 2: Load the rubber material and close the mold: After the mold temperature is constant, separate the upper mold, the middle plate and the lower mold, put the lower rubber material (solid) into the cavity of the lower mold cavity, and then place the middle plate on the lower mold , make the lower mold core of the middle plate stick to the surface of the lower rubber material, then put the upper rubber material (solid state) into the surface of the upper mold core, and then embed the cavity of the upper mold concave part into the upper mold core, so that the mold core of the middle plate is attached to the surface of the upper mold core. The surface of the upper rubber material. At this time, the material type matches the cavity to facilitate the filling of the cavity with the rubber material. The vulcanization time is 100S and the vulcanization temperature is 150℃～200℃;

Step 3: Vulcanization molding: put the mold after the mold clamping in step 2 into the vulcanizer, start the vulcanizer, heat the mold according to the vulcanization temperature preset by the vulcanizer, and the upper rubber material melts and flows into the upper-piece cavity , in the upper sheet cavity, an upper rubber sheet with a front-end inlet flow channel and an outlet flow passage reserved groove and a hemispherical cavity in the middle is formed, and the lower rubber material melts and flows into the lower sheet cavity, forming in the lower sheet cavity. The lower rubber sheet has a reserved groove for the front inlet air passage and the outlet air passage, and the middle part is a hemispherical cavity;

Step 4: Open the mold: separate the upper mold from the lower mold and pull out the middle plate, put the breathable support material into the hemispherical cavity of the upper rubber sheet or the lower rubber sheet; the breathable support material such as sponge, leaves, buckwheat, etc., the middle plate There are various forms of extraction, such as the most clumsy manual extraction, or through a commonly used manipulator. There are various extraction methods for those skilled in the art, as long as the upper core and the lower core can be extracted. between the upper mold and the lower mold;

Step 5: Put the inlet runner core and the outlet runner core into the reserved grooves of the inlet runner and outlet runner, put the molds of the upper mold and the lower mold into the vulcanizer, and put the upper and lower molds into the vulcanizer. The rubber film is hot-melt bonded, and the intake runner core and the outlet runner core are extracted to form a basic airbag with the inlet runner and the outlet runner; during hot-melt bonding, the hot pressing temperature is 130℃～ 200℃, the pressure value is 0.3～0.5Mpa;

Step 6: respectively insert two balls between the occlusion ring and the limit point in the inlet flow channel and between the occlusion ring and the limit point in the outlet flow channel to complete the preparation of the air bag;

Step 8: The air ducts made of PVC or TPU and silicone hose materials are inserted into the air inlet duct and the outlet air duct respectively, the airbag is put into the shoe, and the air duct connected to the air intake duct is connected to the inside/outside of the shoe. It is connected to the outside/inside of the shoe in communication with the outlet air passage.

In this production process, step 1 preheating the mold is required before the production of the first mold. If the production of the first mold is completed, the step 1 can be omitted during continuous production after the subsequent second mold.

In step 2, an upper mold core 61 and a lower mold core are provided on the middle plate 6, and the upper mold core 61 makes the rubber skins in the upper mold 5 and the lower mold 7 closely adhere to the inner wall of the mold cavity to form the airbag body 1, and The airbag body 1 is formed with a gas-containing inner cavity 2 .

In the utility model, the outlet flow channel mold core can be the same as the intake flow channel mold core, and the placement direction is opposite to the intake flow channel in the manufacturing process.

Put this product into the sole of the shoe, insert the intake duct into the air inlet of the intake runner 3, one end of the intake duct is inserted into the intake section and communicated with the intake runner, the other end of the intake duct is set in the shoe, the intake runner 3 Only the air can be taken in but not out. The air outlet of the air outlet 4 is inserted into the air outlet, and one end of the air outlet is inserted into the air outlet section and communicated with the air outlet. The other end of the air outlet is located outside the shoe. Intake, when the person lifts away, the support makes the airbag from flat to inflated, the damp sweat in the shoe is sucked into the air intake channel through the airbag from the air intake pipe, the airbag expands, and the air outside the airbag enters the air intake channel through the air intake duct, and the first circle is moved. The beads 34 are pushed to the first limit point 323, and the air intake runner and the air-accommodating cavity 2 pass through, so that the gas enters the air-accommodating cavity 2 from the intake runner 3. The second ball 44 is pushed toward the outlet air blocking ring, and the outlet air passage is closed;

After the human foot touches the ground, the airbag is compressed, and the gas in the air-accommodating cavity 2 enters the outlet air passage and pushes the second ball 44 to the second limit point 413 , and the outlet air passage and the air-accommodating inner chamber 2 pass through, so that the gas flows out of the airbag , the damp sweat in the shoe is squeezed out of the shoe. At the same time, the gas in the air chamber 2 enters the intake runner and pushes the first ball 34 to the intake blocking ring, and the intake runner is closed to prevent The sweat that has just been drawn from the shoes flows back into the shoes, so as to realize one-way intake of air in the air inlet channel 3 and one-way air out of the outlet air channel 4.

When a person lifts their feet, the airbag utilizes its own rubber elasticity and the inner cavity of the container to fill the support to return to a bulging state, and the inner cavity of the container inhales air from the intake duct; Air is squeezed out through the outlet conduit. This cycle achieves the purpose of inhaling and exhausting. Through the air bag structure of the utility model, the air bag can actively inhale and forcibly discharge air.

Embodiment 2

The difference between the second embodiment and the first embodiment is that the structures of the intake runner 3 and the outlet runner are different, and the structures of the inlet runner core and the outlet runner core are different.

In the second embodiment, the intake flow passage 3 includes a first intake section 31, a second intake section 32, and a first interface 33 connecting the first intake section 31 and the second intake section 32, and the second intake section 32. The air inlet section 32 is provided with a first ball 34 for opening or closing the first interface 33. The outlet air passage 4 includes a first air outlet section 41, a second air outlet section 42 and a connection between the first air outlet section 41 and the second air outlet. The second port 43 of the section 42, the first air outlet section 41 is provided with a second ball 44 for opening or closing the second port 43.

Preferably, the first intake section 31 is provided with an intake section 311 and an intake blocking section 312 in sequence from the intake port to the inner chamber 2 of the gas container, and the second intake section 32 is directed from the intake port to the gas container. The direction of the inner cavity 2 is the first ball cavity section 321 and the first air cavity connection section 322 in sequence, and a first limit is provided between the first ball cavity section 321 and the first air cavity connection section 322 At point 323, the inner diameter of the intake section 311 is larger than the diameter of the first ball, the intake section 311 is convenient for the first ball 34 to be inserted into the intake blocking section 312, and the intake section 311 is used to insert the air duct to facilitate gas inhalation, The intake blocking section 312 forms a first interface passing through the first intake section 31 and the second intake section 32. The intake blocking section 312 has two ends, and the inner diameter of one end near the intake port is larger than the diameter of the first ball 34. The inner diameter of the end close to the gas-containing cavity 2 is smaller than the diameter of the first ball, the inner diameter of the first ball cavity section 321 is larger than the diameter of the first ball 34, and the first limit point 323 limits the first ball 34 to the first ball 34. In the ball chamber section 321, the first limit point 323 is a convex point or a convex column formed on the inner wall of the air intake runner 3, which only limits the position of the first ball 34 to prevent the first ball 34 from entering the airbag and causing the first ball 34 to enter the airbag. There is a gap between the ball 34 and the inner wall surface of the air inlet runner 3, that is, the first ball 34 is restricted from falling off into the airbag while keeping the air inlet runner 3 and the gas-containing inner cavity 2 ventilated. A ball cavity section 321 moves back and forth between the intake blocking section 312 and the first limit point 323 .

Preferably, the first air outlet section 41 is provided with an air outlet section 411 and a second ball cavity section 412 in sequence from the air outlet to the air cavity 2 , and the air outlet section 411 and the second ball cavity section 412 There is a second limit point 413 between them, the second limit point 413 restricts the ball from falling off and running out of the airbag while keeping the air outlet 4 and the gas-containing inner cavity 2 ventilated, and the second limit point 413 restricts the second ball 44 In the second ball chamber section 412, the second air inlet section 32 is sequentially provided with an outlet block section and a second air chamber connecting section 422 from the air outlet to the gas chamber 2. The air outlet section 411 and The inner diameter of the second ball chamber section 412 is larger than the diameter of the second ball 44. The air outlet blocking section forms a second interface through the first air outlet section and the second air outlet section. The inner diameter is larger than the diameter of the second ball 44 , the inner diameter of the end near the gas-containing inner cavity 2 is smaller than the diameter of the second ball 44 , the inner diameter of the connecting section 422 of the second gas-containing inner cavity is smaller than the diameter of the second ball 44 , and the second inner diameter is smaller than that of the second ball 44 . The ball 44 moves back and forth between the second limit point 413 and the second gas outlet section 42 in the second ball chamber section 412 under the push of the gas. In the present invention, the outlet blocking section can be omitted, and the diameter of the connecting section 422 of the second gas-holding cavity is smaller than that of the second ball 44, which can also solve the technical solution of the present utility model. Whether the structure is consistent with the intake runner core.

The structure of the utility model is simple, the air inlet flow channel and the outlet flow channel are integrally formed in the airbag body, the first ball is used to move between the inlet blocking section and the first limit point to achieve unidirectional air intake, and the second ball is used to The movement between the air outlet blocking section and the second limit point achieves one-way air outlet, which not only ensures the control effect of the present invention on the air flow, but also simplifies the overall structure; At a limit point, the first ball 34 opens the first interface, the air inlet runner opens the air intake, the air outside the airbag enters the outlet runner and pushes the second ball 44 to the second air outlet section 42, and the second ball 42 blocks the first With two ports, the outlet air passage is closed to realize one-way air intake in the air inlet passage; the air flow in the air bag enters the air inlet passage and pushes the first ball 34 to the intake blocking section, the first ball 34 blocks the first port, and the air inlet passage Closed to prevent the airflow in the airbag from flowing back, the air in the airbag enters the outlet air passage and pushes the ball to the second limit point 413 , and the outlet air passage opens and discharges air, realizing one-way outflow from the outlet air passage.

Put this product into the sole of the shoe, insert the intake duct into the air inlet of the intake runner 3, one end of the intake duct is inserted into the intake section and communicated with the intake runner, the other end of the intake duct is set in the shoe, the intake runner 3 Only the air can be taken in but not out. The air outlet of the air outlet 4 is inserted into the air outlet, and one end of the air outlet is inserted into the air outlet section and communicated with the air outlet. The other end of the air outlet is located outside the shoe. Intake, when the person lifts away, the wet sweat in the shoes enters the air bag through the air intake passage, the air bag expands, and the air outside the air bag enters the air intake section 311 through the air intake duct and pushes the first ball 34 from the air intake blocking section 312 to the first ball 34. A limit point 323, the first ball 34 opens the first interface, the air intake section 311, the air intake blocking section 312, the first ball cavity section 321, the first air cavity connecting section 322 and the air cavity 2 penetrates through, so that the gas enters the gas chamber 2 from the intake flow channel 3. At the same time, after the gas outside the shoe enters the gas outlet section, the second ball 44 is pushed from the ball chamber section to the second gas outlet section. Two balls 44 block the second interface, and the air outlet is closed;

After the human foot touches the ground, the airbag is compressed, and the gas in the air-accommodating cavity 2 makes the second ball 44 move from the second interface to the second limit point 413, the air outlet section 411, the air outlet blocking section, the second ball cavity section 412, The second air-accommodating cavity connecting section 422 communicates with the air-accommodating cavity 2, so that the gas flows out of the airbag, and the damp sweat in the shoes is squeezed out of the shoes. The first ball 34 is pushed from the first limit point 323 to the intake blocking section 312 to block the first interface 33, so that the gas in the gas-containing cavity cannot enter the intake section 311, preventing the perspiration that has just been drawn from the shoes back into the shoe, so as to realize the one-way intake of the air inlet runner 3 and the unidirectional air outlet of the outlet runner 4.

Preferably, the air inlet runner mold core 8 includes a first cylinder and a second cylinder, the outer diameter of the first cylinder is larger than the outer diameter of the second cylinder, and the first cylinder is provided with a circle of grooves 82, so The connection between the first cylinder and the second cylinder is provided with a first limiting hole 81. After the upper mold core 8 is put into the airbag body 1, the air intake runner 3 is formed by hot molding, and the first interface is formed through the groove 82. , the first limiting point is formed through the first limiting hole 81 .

Preferably, the outlet runner mold core 9 includes a third cylinder and a fourth cylinder, the outer diameter of the third cylinder is larger than the outer diameter of the fourth cylinder, and the third cylinder is provided with a second limiting hole 91 to After the lower mold core 9 is placed in the airbag body 1 , the outflow channel 4 is formed by hot molding, and the second limiting point 432 is formed through the second limiting hole 91 .

The structure of the air inlet runner 3 and the outlet air duct 4 formed integrally with the airbag of the utility model realizes unidirectional air intake from the air intake runner 3 and unidirectional air outlet from the outlet air duct 4, thereby preventing backflow, that is, the gas in the shoe enters the airbag Inside, the gas just inhaled from the shoe cannot flow back into the shoe, but can only be discharged out of the shoe, which solves the problem that the air inhaled in the existing airbag flows back, and effectively avoids the problem that the airbag only realizes the air flow inside and outside the shoe but cannot really achieve the ventilation effect. disadvantages.

According to the different needs of users, the air inlet runner 3 and the outlet runner 4 are reversed, and the air outside the shoe is inhaled into the shoe through the air bag, that is, the air inlet of the air inlet runner 3 is inserted into the air intake duct, and the air intake duct is arranged outside the shoe. The air outlet of the air outlet channel 4 is inserted into the air outlet conduit, and the air outlet conduit is arranged in the shoe.

The above embodiments are only to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, ordinary engineers and technicians in the field make the technical solutions of the present invention. Various deformations and improvements should fall within the protection scope determined by the claims of the present utility model.

Claims (5)

1. A ventilation air bag, comprising an air bag body, a gas-receiving inner cavity is provided in the air-bag body, and a one-way air inlet flow channel and a one-way outlet air flow channel that communicate with the air-receiving inner cavity are arranged at the front end of the air bag body. , which is characterized in that: the airbag body, the one-way air inlet flow channel and the one-way outlet air channel are integrally formed, the air inlet flow channel is provided with a first ball, and the first ball and the air inlet are provided with The intake blocking ring, the inner diameter of the intake flow channel is larger than the diameter of the first ball, the inner diameter of the intake blocking ring is smaller than the diameter of the first ball, the outlet flow channel is provided with a second ball, the A gas outlet blocking ring is arranged between the second ball and the outlet of the gas-containing inner cavity, the inner diameter of the outlet flow channel is larger than the diameter of the second ball, and the inner diameter of the gas outlet blocking ring is smaller than the diameter of the second ball. 2 . The ventilation airbag according to claim 1 , wherein the inner wall surface of the air inlet channel is provided with a plurality of first limit points between the inlet of the air-accommodating cavity and the first ball, and the first limit point is 2 . A limit point protrudes on the inner wall of the air inlet flow channel, the distance between the tops of the protrusions of the first limit points is smaller than the diameter of the first ball, and the inner wall surface of the outlet flow channel is provided between the air outlet and the second ball There are several second limit points, the second limit points protrude from the inner wall of the outlet air channel, and the distance between the protruding tops of the several second limit points is smaller than the diameter of the second ball. 3 . The ventilation airbag according to claim 1 , wherein the air-containing inner cavity is filled with a breathable support filler. 4 . 4. A mold for manufacturing a ventilating air bag according to claim 1, wherein the air bag mold comprises an upper mold, a middle plate, and a lower mold, and the middle plate is arranged between the upper mold and the lower mold, and the upper mold The mold and the lower mold are arranged in parallel and opposite to each other and closely fit on the upper and lower surfaces of the middle plate. The upper and lower molds are both provided with at least one concave mold cavity, and the upper and lower surfaces of the middle plate are provided with protruding cavities at the positions corresponding to the concave mold cavity. The upper mold core and the lower mold core, the upper mold cavity and the middle plate mold core are closed to form the upper mold cavity, and the lower mold concave mold cavity and the middle plate lower mold core are closed to form the lower mold The upper and lower cavities are provided with a reserved slot for an air inlet flow channel and a reserved slot for an outlet flow channel. 5. The mold of the ventilation air bag according to claim 4, characterized in that: the air bag mold further comprises an inlet runner mold core and an outlet runner mold core matched with a reserved groove for an inlet runner. The air flow channel mold core and the outlet air channel mold core are a round bar, the round bar is provided with a blocking groove, and one side of the blocking groove is provided with a limit hole.

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