Air bag electrode cap with high fitting degree

Abstract

The invention relates to an air bag electrode cap with high fitting degree, which comprises a cap body, an air bag connecting tube, an air bag, an inflatable balloon and a connecting regulator, an electrode is attached inside the cap body, the air bag connecting tube is arranged on the inner wall of the cap body, the air bag is arranged on the air bag connecting tube, the air bag is communicated with the air bag connecting tube, the inflatable balloon is connected with the air bag connecting tube, and the connecting regulator is connected with the air bag connecting tube. The air bag can be inflated, the connection adjuster is arranged on the air bag connection pipe and can deflate the air bag, and the air bag can preferentially fill an area with the lowest resistance in the inflation process, namely the position with the lower skull, so that the electrodes at different parts can be in close contact with the scalp, and the air bag is rich in elasticity, so that the wearing comfort is ensured; the air bag connecting pipe is connected with the air bag, the air bag and the air bag connecting pipe are arranged on the inner wall of the cap body, the inflation balloon is connected with the air bag connecting pipe, the air bag is inflated, the cap body is more attached to the head of a person, and the overall wearing comfort is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an air bag electrode cap with high fit. Background Art

[0002] Transcranial electrical stimulation (tES) is a non-invasive neuromodulation technology that places the corresponding stimulation electrodes on the surface of the scalp and then applies a low-intensity stimulation current to achieve the purpose of regulating brain neural activity. The output voltage of transcranial electrical stimulation devices is usually limited. If the resistance is too high and exceeds the adjustment capacity of the device, the output current will not reach the set value. In order to ensure the constant current treatment effect, the resistance between the cathode and the anode must be as low as possible. The factor that affects resistance the most is the fit between the electrode and the scalp. If the fit is not tight, the resistance value will increase. Summary of the invention

[0003] In view of this, the present application proposes an airbag electrode cap with high fit.

[0004] According to one aspect of the present application, there is provided an airbag electrode cap with a high degree of fit, comprising: a cap body, an airbag connecting tube, an airbag, an inflatable airbag and a connecting regulator, wherein electrodes are attached to the interior of the cap body, the airbag connecting tube is arranged on the inner wall of the cap body, the airbag is arranged on the airbag connecting tube, and the airbag is connected to the airbag connecting tube, the inflatable airbag is connected to the airbag connecting tube and can be inflated, and the connecting regulator is arranged on the airbag connecting tube and can be deflated.

[0005] In a possible implementation, there are multiple airbags, which are evenly distributed on the inner wall of the cap body.

[0006] In a possible implementation, the arrangement positions of the plurality of airbags are adapted to correspond to and match the occipital lobe region of the human head.

[0007] In a possible implementation, the airbag connecting tube located inside the cap body is in a cross-shaped structure;

[0008] The plurality of airbags are arranged in a cross shape along the airbag connecting tube.

[0009] In a possible implementation, the method further includes: connecting a pipeline;

[0010] The airbag connecting tube is connected to the inflatable airbag through the connecting pipe;

[0011] The connection regulator is located outside the cap body and is arranged at the connection position between the airbag connection tube and the connection pipeline.

[0012] In a possible implementation, the connection regulator includes: an adjustment portion and a mounting portion;

[0013] The mounting portion is a hollow column structure, embedded and mounted inside the connecting pipe;

[0014] The adjusting part is embedded in the airbag connecting tube and is threadedly connected with the mounting part. The adjusting part is telescopic relative to the mounting part to adjust the opening size between the adjusting part and the mounting part.

[0015] In a possible implementation, there are two or more inflatable balloons, which are respectively connected to the balloon connecting tubes.

[0016] In a possible implementation manner, a contact is provided on the electrode.

[0017] In a possible implementation, the electrode is made of a magnetically compatible material.

[0018] In a possible implementation manner, the cap body is a hollow structure.

[0019] In a possible implementation, the cross section of the airbag connecting tube in the length direction of the tube body is a ring-shaped rectangular structure;

[0020] The edge of the airbag connecting tube is arc-shaped, and the side of the airbag connecting tube with a larger cross section is attached to the inner wall of the cap body.

[0021] The beneficial effects of the airbag electrode cap with high fit in the embodiment of the present application are as follows: during the inflation process, the airbag will preferentially fill the area with the lowest resistance, that is, the lower part of the skull, so that the electrodes in different parts can be in close contact with the scalp. The airbag is elastic to ensure the comfort of wearing, and will not damage the scalp or cause discomfort due to excessive pressure, thus solving the problem of excessive resistance caused by poor contact between the electrode and the scalp. Specifically, the airbag is connected through an airbag connecting tube, and the airbag and the airbag connecting tube are arranged on the inner wall of the cap body. The airbag connecting tube is connected by the inflated airbag, and the airbag is inflated to make the cap body fit the human head more closely, thereby improving the overall wearing comfort.

[0022] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 A schematic diagram showing the main structure of an airbag electrode cap with high fit according to an embodiment of the present application;

[0025] Figure 2 A schematic diagram showing the test body structure of the airbag electrode cap with high fit according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the wearing body structure of the airbag electrode cap with high fit according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0028] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] like Figure 1 , Figure 2 and Figure 3As shown, the airbag electrode cap with high fit of the embodiment of the present application includes: a cap body 100, an airbag connecting tube 200, an airbag 300, an inflatable airbag 400, and a connecting regulator 600. The cap body 100 is made of a comfortable and fit material, and an electrode 700 is attached inside to achieve a specific electrophysiological monitoring or treatment function. The airbag connecting tube 200 is arranged on the inner wall of the cap body 100, and the airbag 300 is arranged on the airbag connecting tube 200 and communicated with the airbag connecting tube 200. After being inflated, the airbag 300 can fit tightly to the user's head, providing additional fixation and support, while ensuring that the electrode The close contact between 700 and the scalp improves the accuracy of monitoring or treatment. The airbag connecting tube 200 is arranged on the inner wall of the cap body 100, and plays an important role in connection and transmission. The airbag 300 is closely connected with the inflatable balloon 400 and the connecting regulator 600 to ensure that the airbag 300 can be inflated and deflated as needed. The inflatable balloon 400 is connected to the airbag connecting tube 200. Simply squeezing the inflatable balloon 400 can inject a proper amount of air into the airbag 300, thereby realizing a fast and convenient inflation operation. The connecting regulator 600 is arranged on the airbag connecting tube 200, and can deflate the airbag 300.

[0033] In this embodiment, the airbag 300 will preferentially fill the area with the lowest resistance, that is, the lower part of the skull, during the inflation process, so that the electrodes 700 at different parts can all be in close contact with the scalp. The airbag 300 is elastic, ensuring the comfort of wearing, and will not damage the scalp or cause discomfort due to excessive pressure, thereby solving the problem of excessive resistance caused by poor contact between the electrode 700 and the scalp. Specifically, the airbag 300 is connected through the airbag connecting tube 200, and the airbag 300 and the airbag connecting tube 200 are arranged on the inner wall of the cap body 100, and the airbag connecting tube 200 is connected through the inflatable balloon 400, and the airbag 300 is inflated, so that the cap body 100 fits better with the human head, thereby improving the overall wearing comfort.

[0034] In a specific embodiment, there are multiple airbags 300, which are evenly arranged on the inner wall of the cap body 100, to enhance the overall stability and support of the cap body 100, and to ensure that the electrode 700 can fit the user's head more comprehensively and evenly. Specifically, the uniform distribution of multiple airbags 300 allows the user to feel comfortable support from the airbags 300 no matter where they are, which improves the comfort when wearing, helps ensure close contact between the electrode 700 and the scalp, and improves the accuracy and effect of treatment.

[0035] Furthermore, in this specific embodiment, the multiple airbags 300 are arranged at positions corresponding to the occipital region of the human head. The occipital region is an important area of ​​the brain. When the user wears the cap, the airbags 300 are inflated, so that the cap body 100 can fit closely and support the occipital region and the surrounding head area, which helps to optimize the monitoring or treatment effect of the occipital region.

[0036] In a specific embodiment, the airbag is attached to the inner side of the cap body, and the airbag is annular in structure, a mounting hole for the electrode 700 is preset in the middle, the electrode 700 is embedded in the airbag, the electrode 700 is suitable for electrically connecting to a power source, and the contact surface of the electrode 700 is located outside the mounting hole of the electrode 700. By attaching the airbag to the inside of the cap body and embedding the electrode 700 on the airbag, the low-intensity stimulation current is applied to achieve the purpose of regulating brain nerve activity, and the comfort of wearing the electrode cap is also improved.

[0037] Specifically, a plurality of airbags are attached to the inner side of the cap body, and the airbags are designed with a ring structure, which ensures the fit of the cap body without interfering with the normal wearing and comfort of the cap body. A mounting hole for the electrode 700 is reserved at the center of the airbag to ensure that the electrode 700 can be placed therein, and the electrode 700 itself is embedded in the reserved hole to facilitate electrical connection with the power supply, and the contact surface of the electrode 700 is set outside the mounting hole of the electrode 700 to facilitate contact with the scalp and conduction with external equipment or treatment instruments, and improve the convenience and efficiency of use. In this way, the design of the electrode 700 embedded in the airbag improves the wearing comfort while ensuring the use.

[0038] Furthermore, in this embodiment, the cap body is provided with an electrode 700 wire through hole, the electrode 700 wire through hole corresponds to the air bag, and the wire of the electrode 700 passes through the electrode 700 wire through hole. The electrode 700 wire through hole is provided to ensure that it corresponds to the air bag in the cap body, and the wire required by the electrode 700 can smoothly pass through the electrode 700 wire through hole to achieve electrical connection with the power source, and the electrode 700 wire through hole provides a convenient passage for the wire.

[0039] Furthermore, in the present embodiment, the electrode 700 and the mounting portion are manufactured through an integrated molding process, which greatly enhances the overall strength and durability of the electrode 700. The mounting portion will be embedded in the electrode 700 wire through hole and the electrode 700 mounting hole, ensuring the stability of the electrode 700 and providing a convenient passage for its wires. When the electrode 700 is correctly installed, the electrode 700 will be located inside the electrode cap.

[0040] In a specific embodiment, the airbag connecting tube 200 located inside the cap body 100 has a cross-shaped structure, and multiple airbags 300 are arranged along the cross of the airbag connecting tube 200. The airbag connecting tube 200 has a cross-shaped structure, and multiple airbags 300 are arranged along the cross, and the cross-shaped airbag connecting tube 200 can optimize the layout and distribution of the airbags 300, and achieve precise support for various areas of the head.

[0041] In a specific embodiment, it further includes: a connecting pipe 500, through which the airbag connecting pipe 200 is connected to the inflatable balloon 400, and a connecting regulator 600 is located outside the cap body 100 and is arranged at the connection position between the airbag connecting pipe 200 and the connecting pipe 500. Specifically, the airbag connecting pipe 200 is connected to the inflatable balloon 400 through the connecting pipe 500. When the user needs to inflate the airbag 300, he only needs to simply squeeze the inflatable balloon 400, and the gas will quickly flow into the airbag connecting pipe 200 through the connecting pipe 500, thereby providing sufficient air support for the airbag 300.

[0042] Furthermore, in this specific embodiment, the connection regulator 600 is disposed outside the cap body 100 and is located at the connection position between the airbag connection tube 200 and the connection pipe 500, so as to facilitate the user's operation. The user can adjust the air pressure in the airbag 300 by rotating or pushing and pulling the connection regulator 600 according to actual needs, so as to achieve the best fit and comfort.

[0043] Furthermore, in this specific embodiment, the connection regulator 600 includes: an adjustment part and a mounting part, the mounting part is a hollow column structure, embedded and installed in the interior of the connection pipe 500, the adjustment part is embedded in the airbag connection pipe 200, and is threadedly connected with the mounting part, and the adjustment part rotates or retracts relative to the mounting part to adjust the opening size of the adjustment part and the mounting part, and a one-way valve is arranged inside to ensure that no leakage occurs during inflation. The mounting part is a hollow column structure, which provides convenience for its embedded installation in the interior of the connection pipe 500. Through the embedded installation, a tight and stable connection is formed between the mounting part and the connection pipe 500, thereby ensuring smooth transmission of gas. The adjustment part is embedded in the airbag connection pipe 200 and is tightly connected to the mounting part by a threaded connection. The threaded connection method not only makes the connection between the adjustment part and the mounting part more firm and reliable, but the user only needs to gently rotate or retract the adjustment part to adjust the opening size between it and the mounting part, thereby accurately controlling the air pressure in the airbag 300. In this way, by adjusting the size of the opening, the user can flexibly control the outflow of gas, thereby achieving precise control of the air pressure of the airbag 300.

[0044] In a specific embodiment, there are two inflatable balloons 400 , which are respectively connected to the balloon connecting tubes 200 , so as to more quickly inflate multiple airbags 300 .

[0045] In a specific embodiment, the electrode 700 is provided with contact points to improve the comfort and contact area between the electrode 700 and the head.

[0046] In a specific embodiment, the cap body 100 is a hollow structure, which reduces the weight of the cap body 100, improves wearing comfort, and helps to enhance breathability and reduce the stuffiness that may be caused by long-term wearing.

[0047] Furthermore, in this embodiment, the cap body 100 is a hollow structure, and a plurality of hollow through holes 110 are provided. The plurality of through holes 110 are arranged on the cap body 100, and the through holes 110 are in a triangular structure. The through holes 110 not only give the cap body 100 a light texture, but also further enhance the stability of the structure and the uniformity of the current distribution through its special triangular structure design. The airbag is arranged on the inner side of the cap body 100, at the connection position of any adjacent through holes 110, and the airbag is an annular structure, and an electrode 700 mounting hole is preset in the middle, and the airbag is positioned at any two adjacent At the connection point of the through hole 110, a mounting hole designed for the electrode 700 is preset in the center of the annular structure airbag, which ensures a close fit between the airbag and the cap body 100, and provides a position for the stable installation of the electrode 700. The electrode 700 is embedded in the airbag, located in the electrode 700 mounting hole, and the electrode 700 protrudes to the outside of the airbag. The electrode 700 is embedded in the electrode 700 mounting hole of the airbag, and part of the electrode 700 even protrudes to the outside of the airbag, so that the electrode 700 can contact the external environment more effectively, thereby improving the efficiency and stability of current conduction.

[0048] In this embodiment, the cap body 100 adopts a hollow design, which has good air permeability and can also reduce the discomfort caused by long-term wearing. Specifically, by opening a plurality of hollow through holes 110 on the cap body 100 made of fabric, the through holes 110 are triangular structures, the cap body 100 with a fabric structure, and the through holes 110 opened can improve the air permeability of the cap body 100 and enhance the user's experience. In addition, during the inflation process, the airbag 300 will preferentially fill the area with the lowest resistance, that is, the lower part of the skull, so that the electrodes 700 at different parts can all be in close contact with the scalp. The elasticity of the airbag ensures the comfort of wearing, and will not damage the scalp or cause discomfort due to excessive pressure, thereby solving the problem of excessive resistance caused by poor contact between the electrode 700 and the scalp.

[0049] In a specific embodiment, the cap body 100 is integrally formed, and the various components of the cap body 100 are seamlessly combined together at one time to form a complete and unified whole, avoiding welding, bonding or other connection methods that may be required in traditional manufacturing methods, thereby reducing the complexity and potential failure points in the manufacturing process.

[0050] The cap body 100 is a whole, and a hollow structure is formed by opening a hole in the cap body 100 .

[0051] Specifically, the structure of the integrally formed cap body 100 is more solid and stable. Since the cap body 100 is a hollow structure, it performs well in terms of thermal performance. Since the connection parts are reduced, the overall strength and durability of the cap body 100 are also enhanced. In addition, the integral molding process also improves production efficiency and reduces manufacturing costs, making the production of the cap body 100 more economical and efficient.

[0052] In a specific embodiment, the through holes 110 include regular triangles and irregular triangle structures. Specifically, there are six triangular through holes 110 located at the top of the cap body, all of which are regular triangular structure through holes 110, and the six through holes 110 are symmetrically arranged, three through holes 110 correspond to the right brain of the head, and three through holes 110 correspond to the left brain of the head. The regular triangular structure allows the cap body to dissipate heat and avoid being tight, while also providing a certain degree of stability.

[0053] Furthermore, in this specific embodiment, six irregular through holes 110 are also included for covering the head. Specifically, two correspond to the left side of the head, two correspond to the right side of the head, and two correspond to the back side of the head, and all are located below the six regular through holes 110. The head is more attached through the irregular triangular through holes 110, and the through holes 110 located on both sides are concave toward the top near the bottom to avoid the holes for the hanging ears.

[0054] Furthermore, in this specific embodiment, four regular triangular through holes 110 are provided on the top of the cap body, and one regular triangular through hole 110 is provided on the front side.

[0055] In a specific embodiment, the cap body 100 is made of a stretchable fabric material, that is, the cap body 100 is made of a fabric that can flexibly adapt to heads of different sizes and shapes. This fabric material has good elasticity and ductility, so that the cap body 100 can fit the wearer's head tightly without causing discomfort or pressure. Specifically, the use of stretchable fabric allows the cap body 100 to automatically adjust its shape and size when worn to adapt to the head contours of different wearers. This adaptability improves the comfort and wearing experience of the cap body 100.

[0056] In a specific embodiment, a plurality of protrusions extend from the contact side of the electrode 700 to enhance the contact effect and performance between the electrode 700 and the target surface of the head. These protrusions increase the actual contact area between the electrode 700 and the target, and through their tiny raised structures, they effectively improve the stability of physical contact and the reliability of electrical connection, and also help prevent the electrode 700 from sliding or falling off during use, thereby ensuring a stable electrical connection.

[0057] In a specific embodiment, the hollow area of ​​the cap body 100 is 70%-80% of the area of ​​the cap body 100. The large-area hollow design enables the cap body 100 to maintain good ventilation and air permeability when worn, effectively reducing the stuffiness and sweat accumulation of the head, and improving the comfort of the wearer. At the same time, this design also reduces the overall weight of the cap body 100, making it lighter and less burdensome to wear. In addition, the large-area hollowing also makes it possible to optimize the electrical performance of the cap body 100, allowing more air flow, which helps to dissipate heat, thereby maintaining the stability of the internal temperature of the cap body 100.

[0058] In a specific embodiment, the cap body 100 is a symmetrical structure.

[0059] In a specific embodiment, the connection position between any two adjacent through holes 110 is circular. The circular connection position helps to enhance the overall structural strength of the cap body 100, making the connection between the through holes 110 more stable and reducing the risk of deformation or breakage due to external forces. At the same time, the circular design also optimizes the stress distribution of the cap body 100, so that it can maintain good morphological stability and durability in various usage scenarios. In addition, the circular connection position also improves the comfort and fit of the cap body 100. Since the circle has a smooth curve, it reduces the irritation and pressure on the wearer's head by the edge of the through hole 110, making the cap body 100 more comfortable and non-sensitive when worn.

[0060] In a specific embodiment, a chin rest is provided at the bottom of the cap body 100 corresponding to the chin.

[0061] In a specific embodiment, the cross-section of the airbag connecting tube 200 in the length direction of the tube body is a ring-shaped rectangular structure, the edge of the airbag connecting tube 200 is arc-shaped, and the side with a larger cross-section of the airbag connecting tube 200 is attached to the inner wall of the cap body 100. The side with a larger cross-section of the connecting tube is tightly attached to the inner wall of the cap body 100, thereby improving the overall fit, that is, ensuring the fit with the human head.

[0062] Furthermore, in this specific embodiment, it also includes: an airbag connecting tube 200, which is a hose, is arranged on the inner side of the cap body 100, connected to two adjacent airbags 300, and is arranged along the edge of the through hole 110. The airbag connecting tube 200 is made of a soft material to ensure good flexibility and durability of the airbag connecting tube 200 to adapt to various usage scenarios and changes in head contours. The airbag connecting tube 200 is arranged along the edge of the through hole 110 to avoid discomfort caused by the airbag connecting tube 200 to the wearer's head, and also ensure that the airbags 300 can be evenly distributed and closely fit the head, thereby further optimizing the comfort and electrical performance of the cap body 100.

[0063] like Figure 1 As shown, the airbags 300 may be arranged in a triangular shape, which may match the occipital region of the head.

[0064] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A balloon electrode cap with high fit, characterized in that: include: A cap body, wherein electrodes are attached to the interior of the cap body; An airbag connecting tube, the airbag connecting tube being arranged on the inner wall of the cap body; An airbag, which is arranged on the airbag connecting tube and is in communication with the airbag connecting tube; An inflatable balloon, connected to the balloon connecting tube, capable of inflating the balloon; A connecting regulator is arranged on the airbag connecting tube and can deflate the airbag.

2. The balloon electrode cap with high fit according to claim 1, characterized in that: The number of the airbags is multiple and they are evenly distributed on the inner wall of the cap body.

3. The balloon electrode cap with high fit according to claim 2, characterized in that: The airbag connecting tube located inside the cap body is in a cross-shaped structure; The plurality of airbags are arranged in a cross shape along the airbag connecting tube.

4. The balloon electrode cap with high fit according to any one of claims 1 to 3, characterized in that: Also includes: Connect the pipes; The airbag connecting tube is connected to the inflatable airbag through the connecting pipe; The connection regulator is located outside the cap body and is arranged at the connection position between the airbag connection tube and the connection pipeline.

5. The balloon electrode cap with high fit according to claim 4, characterized in that: The connection regulator comprises: an adjusting portion and a mounting portion; The mounting portion is a hollow column structure, embedded and mounted inside the connecting pipe; The adjusting part is embedded in the airbag connecting tube and is threadedly connected with the mounting part. The adjusting part is telescopic relative to the mounting part to adjust the opening size between the adjusting part and the mounting part.

6. The balloon electrode cap with high fit according to claim 1, characterized in that: There are more than two inflatable balloons, which are respectively connected to the balloon connecting tubes.

7. The balloon electrode cap with high fit according to claim 1, characterized in that: The electrodes are provided with contacts.

8. The balloon electrode cap with high fit according to claim 1, characterized in that: The electrodes are made of magnetically compatible material.

9. The balloon electrode cap with high fit according to claim 1, characterized in that: The cap body is a hollow structure.

10. The balloon electrode cap with high fit according to claim 1, characterized in that: The cross section of the airbag connecting tube in the longitudinal direction of the tube body is a ring-shaped rectangular structure; The edge of the airbag connecting tube is arc-shaped, and the side of the airbag connecting tube with a larger cross section is attached to the inner wall of the cap body.

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