WO2023123965A1

WO2023123965A1 - Inflation pipe seat connecting device

Info

Publication number: WO2023123965A1
Application number: PCT/CN2022/102879
Authority: WO
Inventors: 陈兴桥; 王鹤锦; 虞丹; 严俊磊; 何静怡; 沈卿; 俞振华; 徐华军
Original assignee: 浙江省军工集团有限公司
Priority date: 2021-12-31
Filing date: 2022-06-30
Publication date: 2023-07-06
Also published as: CN114484119A

Abstract

An inflation pipe seat connecting device, comprising an inflation pipe (1) used for inflating air into an air chamber of a product to be inflated and an inflation connecting seat (2) used for fitting and mounting the inflation pipe (1). The inflation pipe (1) is in the shape of a hollow cylinder as a whole; one end of the inflation pipe (1) is connected to air pump equipment, and a connecting part (1a) configured to be fixedly connected to the inflation connecting seat (2) is formed at the other end; the inflation connecting seat (2) is fixedly mounted on the wall surface of the air chamber; the center of the inflation connecting seat (2) is provided with an accommodating part (2a) penetrating inner and outer wall surfaces of the air chamber and used for the insertion and accommodation of the connecting part (1a); and a connecting assembly (3) capable of quickly locking, fixing, disassembling, and separating the connecting part and the accommodating part is also comprised between the connecting part (1a) and the accommodating part (2a).

Description

An inflatable pipe seat connecting device

technical field

The invention relates to the field of connection devices for inflatable equipment, in particular to a connection device for an inflatable pipe seat.

Background technique

Inflatable equipment is a common product in life, whether it is an inflatable trampoline castle toy for children to play, an inflatable arch for setting up scenes, or even a temporary tent or aspect for flood relief. a wide range of applications. As the most critical part of various inflatable equipment appliances, the structural characteristics of the connection device connected between the air pump and the air chamber will not only determine the efficiency of the equipment to carry out the inflation work, but also play a significant role in the overall safety of the equipment during the inflation process. big impact.

For example, the Chinese utility model patent document with the application number CN201520207201.9 discloses a structure in which the inflation pipe of an inflatable tent is connected by a valve. The valve includes a conical nut, a connecting head, a seal, a switch nut, a base and a rubber ring , the base includes a lower cover body and an upper tube body, and the middle part of the lower cover body is provided with several circular ventilation holes; Outside the connecting pipe; the seal includes an upper ring body and a lower ring body, and the upper ring body is inserted into the lower body; between the lower part of the lower body and the inner wall of the upper body, there is at least one A sealing ring, the lower A B sealing ring is provided between the ring body and the middle part of the upper bottom of the lower cover of the base; the switch nut is sleeved on the upper tube body and the lower tube body; between two adjacent inflatable tubes, there is a whole Connecting the air pipe, the two ends of the connecting air pipe are respectively socketed with the connecting pipes on the two valves connected to the two inflatable pipes.

In this scheme, a relatively complex valve structure is used to connect and fix the two parts. When the various parts are arranged and installed in sequence, it is also necessary to turn the switch nut to achieve locking and fixing, whether it is When combined installation or dismantling and separation, the process is relatively cumbersome and cannot improve work efficiency.

Another example is a quick plug-in pipe fitting disclosed in the Chinese utility model patent document whose authorized announcement number is CN212480473U, which is composed of a mother pipe and a child pipe. button, the other end of the disassembly button is provided with a locking hook, the outside of the locking hook is equipped with a return spring, one end of the sub-tube is fixedly installed with a rubber ring, and the upper and lower ends of the sub-tube are provided with Positioning and locking block; during installation, the sub-pipe is plugged into the sleeve at one end of the mother tube, and the locking hook on the sleeve is buckled with the positioning and locking block on the sub-pipe. The quick plug-in pipe fitting described in this scheme inserts one end of the sub-tube into the socket at one end of the main tube by pressing the disassembly button, and the locking hook is buckled with the positioning locking block on the sub-tube under the action of the return spring, and then Complete the connection between the mother pipe and the child pipe.

technical problem

In the above scheme, although the fixed connection between the main pipe and the sub-pipe can be completed, the rubber ring parts used in it will suffer from material aging and elastic decline with repeated use for a long time, and even be damaged and disintegrated inside the pipe fitting, losing Fixed connection effect; at the same time, multiple components such as the locking hook, return spring and disassembly button mentioned in it will also complicate the overall structure, making the manufacturing process cumbersome and increasing the production cost, which is not conducive to some applications that require a higher sealing effect. It is widely used in devices that only need to maintain a stable connection between two parts and do not lose their effect. In addition, after the combined installation of the main pipe and the sub-pipe is completed, when the two parts need to be disassembled, it is not only necessary to press the disassembly button, but also to pull out the main pipe and the sub-pipe in opposite directions, which makes the operation complicated, especially When water or oil is attached to the surface of the disassembly button, it will become more difficult to pull out the sub-pipe relative to the mother pipe while pressing from the outside to the inside, which greatly improves the efficiency of disassembly work.

In view of the above problems, the present invention provides an inflatable pipe seat connection device with simple structure, convenient disassembly and assembly operation, and efficient and stable connection.

technical solution

The invention provides a connection device for an inflatable pipe seat with simple structure, convenient disassembly and operation, and efficient and stable connection.

Above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A connection device for an inflatable tube seat, comprising an inflatable tube for filling the air chamber of a desired inflatable product and an inflatable connection seat for cooperating with the installation of the inflatable tube; the overall inflatable tube is a hollow cylinder body shape, one end of the inflatable tube is connected to the air pump equipment, and the other end forms a connecting part for connecting and fixing with the inflatable connecting seat; the inflatable connecting seat is fixedly installed on the wall of the air chamber, and the center of the inflatable connecting seat There is a receiving part through the inner and outer walls of the air chamber, which is used for inserting the connecting part and accommodating it; there is also a device between the connecting part and the receiving part that can quickly complete the locking, fixing and dismounting of the two parts. Detached connected components.

As a preference for the present invention, the connecting assembly includes a locking connecting piece that can prevent the two parts from being separated from each other in reverse movement and maintain a stable connection state after the connecting part is inserted into the receiving part from the outside to the inside. It includes an unlocking trigger that can release the connection and fixing effect of the locking connector when the two parts need to be disassembled and separated.

As a preference for the present invention, the locking connector is in the form of a hollow ring as a whole, the outer surface of the locking connector is fixedly connected with the inner wall of the receiving part, and the inner side of the locking connector faces inward The protrusion is extended to form a movable engaging part for abutting against the outer wall surface of the connecting part; the movable engaging part can slide along the outer wall surface of the plug-in connecting part when the connecting part is inserted into the receiving part, And when the connecting part is inserted into the receiving part and then pulled out and tends to be separated from the receiving part, it can be more closely attached and fixed to the outer wall surface of the plug-in connecting part, realizing the The above-mentioned locking and fixing effect between the inflatable tube and the inflatable connection seat.

As a preference for the present invention, the movable clamping part is in the shape of a sheet protruding inward from the inner side of the locking connector, and the movable clamping part faces the air chamber along the insertion direction of the plug-in connection part. Bend at one end.

As a preference of the present invention, there are several movable clamping parts distributed around the inner circumference of the annular locking connector, and the adjacent movable clamping parts are evenly spaced.

As a preference for the present invention, the unlocking trigger is in the shape of a hollow tube as a whole, can be sleeved and installed between the connecting part and the receiving part, and can reciprocate along the axial direction of the inflation tube, and the unlocking trigger The part includes an abutting part that can be inserted into the space between the outer wall of the connecting part and the inner wall of the receiving part. When the connecting part and the receiving part are fixedly connected together under the use of the locking connecting part, the The unlocking trigger can move toward one end of the locking connector and abut against the upper surface of the movable clamping part through its own lower edge, so that the further bending deformation of the movable clamping part and the connecting part The outer wall surfaces are separated, and the locked and fixed state is released.

As a preference for the present invention, the unlocking trigger also includes a limiting portion extending horizontally at its outer end, the radial dimension of the limiting portion is larger than the radial dimension of the receiving portion, through the The abutting effect of the lower surface of the limiting portion and the upper surface of the accommodating portion realizes the limitation of the depth of the connecting portion entering into the accommodating portion.

As a preference for the present invention, when the lower surface of the limiting portion is abutted against the upper surface of the receiving portion and the movable engaging portion is bent and deformed by pressing, the lower edge of the limiting portion Do not exceed the movable snap joint.

As a preference of the present invention, the interior of the inflatable connection seat is also provided with a self-sealing structure capable of preventing the gas in the gas chamber from leaking outward through the gap between the connection part and the receiving part.

As a preference for the present invention, the self-sealing structure mainly includes an annular elastic sealing ring installed inside the housing part, and the outer peripheral surface of the elastic sealing ring is closely attached to the inner wall of the housing part Fixed, the inner peripheral surface of the elastic sealing ring extends from the outside to the inside to form a tapered sealing part protruding toward the air chamber side, which is used to closely fit with the outer surface of the connecting part to achieve a sealing effect.

Beneficial effect

In summary, the present invention can achieve the following multiple beneficial effects:

1. The connecting device of the inflatable tube seat described in the present invention can realize extremely fast connection or disassembly between the inflatable tube and the inflatable connecting seat, and the operation process is very convenient. At the same time, the connecting device of the inflatable tube seat has a simple structure and is easy to control the production process. It can be widely used in various equipment product fields and meet diverse usage requirements.

2. When the connecting device of the inflatable tube seat according to the present invention connects the connecting part and the receiving part respectively located on the two components to each other, the movable clamping part located between the two parts passes through the original bending direction of itself. The method of further bending and sliding along the outer wall surface of the plug-in connection part will reduce the hindrance to the plug-in process to a minimum; and after the two components are connected and fixed by mutual plugging and nesting, The movable clamping part can be more tightly attached to the outer wall surface of the plug-in connection part or even embedded in the wall surface when the two components are subjected to the opposite force and tend to separate from each other, preventing the two components from being separated. A locking connection assembly with a simple structure is used to realize the locking and fixing of the outwardly protruding connecting part and the inwardly recessed receiving part of the two components that need to be connected and fixed after being nested and plugged together. The durability of each component is extremely high during use, so that the overall connection structure always has a stable and reliable connection performance.

3. When the inflatable tube seat connection device according to the present invention is in contact with the connection state between the two parts, it only needs to press the surface of the unlocking trigger in the axial direction and simultaneously pull the inflatable tube and the inflatable tube on both sides in the opposite direction. The connection seat is enough, the force is uniform, and there is no need to apply force in other directions to the additional trigger mechanism, so it will not be affected by surface water or oil pollution, and is suitable for harsh environments such as mines or factories.

4. When the connecting device of the inflatable tube seat according to the present invention is in a state of repeated vibration for the two connected parts, the connecting part and the receiving part respectively located on the two parts will be subjected to repeated changes of pulling or Compression force, at this time, the locking connector between the two parts will only prevent the two parts from moving away from each other, but will not affect the compression and approaching movement of the two parts, forming a one-way lock connection effect. Therefore, even if the two components are pulled and move away from each other within a certain distance, as long as they do not completely disengage, the two components will be able to approach each other and return to the original connection state when subjected to the next minimal pressing force. Position, to re-realize the stable connection effect of the two components.

5. The connecting device of the gas-filled tube seat according to the present invention also includes a self-sealing structure, which can synchronously improve the sealing effect with the increase of the air pressure in the gas chamber, and can always ensure that the gas in the gas chamber will not be released by the connecting part and the receiving part. The gap between them leaks outward, which effectively improves the inflation efficiency, and greatly improves the safety when inflating some dangerous gases.

Description of drawings

Fig. 1 is a schematic diagram of the combined relationship between the components of the inflatable pipe seat connecting device;

Fig. 2 is a structural schematic diagram of a locking connector;

Fig. 3 is a structural schematic diagram of an unlocking trigger;

Fig. 4 is a schematic diagram of the appearance of each component of the inflatable pipe seat connection device when the connection and installation are completed;

Fig. 5 is a cross-sectional view of the internal structure when the components of the inflatable pipe seat connection device are connected and installed;

Fig. 6 is a partially enlarged schematic diagram of the structure of the locking connector and its surrounding components when the connecting device of the inflatable pipe seat is in the locked connection state;

Fig. 7 is a partially enlarged schematic diagram of the structure of the locking connector and its surrounding components when the inflatable tube seat connecting device is released from the locked connection state;

Fig. 8 is a partially enlarged schematic diagram when a self-sealing structure is provided in the connection device of the gas-filled tube base.

In the picture:

1——inflatable tube, 1a——connecting part;

2——inflatable connecting seat, 2a——accommodating part;

3 - connection components;

4——locking connector, 4a——movable clamping part;

5——unlocking trigger, 5a——contact portion, 5b——limiting portion;

6—self-sealing structure, 6a—elastic sealing ring, 6a1—conical sealing part.

Embodiments of the present invention

The following specific examples are only explanations of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

This program is realized through the following technical means:

Example 1: Inflatable equipment is a common product in life, whether it is an inflatable trampoline castle toy for children to play, an inflatable arch for setting up scenes, or even a temporary tent for flood relief. fields have been widely used. In these products, there is an air chamber surrounded by an external cladding layer. Since the cladding layer is usually made of double-sided PVC cloth, it has good sealing performance and realizes the air chamber relative to the external space. isolated. In order to inflate the air chamber, an inflatable connection seat 2 for connecting with the inflatable tube 1 is usually installed on the surface of the cladding material layer by sewing or bonding.

In this embodiment, a connection device for an inflatable tube seat is provided with a simple structure, convenient disassembly and assembly operation, and efficient and stable connection. Similar to the conventional structure, the inflatable tube socket connection device also includes an inflatable tube 1 for filling the air chamber of the desired inflatable product and an inflatable connection seat 2 for cooperating with the inflatable tube 1 . The inflatable tube 1 is made of nylon or PVC, which has a certain elastic deformation capacity, and is in the shape of a hollow cylinder. It is fixedly connected to the connecting part 1a in the shape of a cylindrical tube, and its other end is fixedly connected to the air outlet pipe directly drawn out from the air pump device or the compressed air tank. Corresponding to the connection part 1a, the center of the inflatable connection seat 2 is opened with a cylindrical hole-shaped accommodation part 2a that penetrates through the inner and outer walls of the air chamber. The radial dimension of the accommodation part 2a is slightly larger than the radial direction of the connection part 1a. The dimension is such that the connecting part 1a can still move back and forth along the common central axis after being inserted into the receiving part 2a. The most important structure of the inflatable tube base connection device is the connection assembly 3 which is arranged between the connection part 1a and the receiving part 2a and can quickly complete the locking, fixing and disassembly of the two parts.

The connecting assembly 3 includes a locking connecting piece 4 that can prevent the two parts from being separated from each other in reverse movement and maintain a stable connection state after the connecting part 1a is inserted into the receiving part 2a from the outside to the inside. It includes an unlocking trigger 5 that can release the connection and fixing effect of the locking connector 4 when the two parts need to be disassembled and separated. Among them, the locking connecting piece 4 adopts iron-carbon alloy as the main material and is formed through processing, which has good resilience reset performance and certain rigid strength. The locking connector 4 is in the shape of a hollow ring as a whole, and its outer surface is fixedly connected with the inner wall of the receiving portion 2a. Meanwhile, the inner surface of the locking connector 4 protrudes and extends inward to form a number of ring-shaped inner walls. The movable clamping parts 4a evenly distributed on the sides are used to abut against the outer wall surface of the connecting part 1a. Specifically, a stepped surface is first formed in the inner cavity of the receiving part 2a, and the locking connector 4 is put into the receiving cavity in a horizontal state so that the lower surface closely fits the upper surface of the stepped surface, and then The upper part of the locking connector 4 is pressed into the radial direction of the receiving chamber with a compression ring that adopts an interference fit with the inner wall of the receiving chamber and is pressed against the upper surface of the locking connector 4 to completely fix the locking connector 4 . It is worth noting that the locking connector 4 is arranged in a direction parallel to the radial section of the insertion receiving part 2a as a whole, and its outer part is fixed to the insertion receiving part 2a by fitting or clamping. The integral connection prevents the lock connector 4 as a whole from being able to move relative to the insertion receiving portion 2a. When manufacturing the locking connector 4, it is necessary to make the movable connecting part 1a into a state of being bent toward one end of the plug-in receiving part 2a along the insertion direction of the plug-in connecting part 1a. The clamping part 4a itself also presents a form in which the thickness gradually decreases from the position where it connects with the ring-shaped main body of the locking connector 4 to its end, and the diameter of the hollow area is surrounded by all the movable clamping parts 4a. The radial dimension must also be smaller than the radial dimension of the plug connection 1a.

When the connecting part 1a is gradually inserted into the cavity of the receiving part 2a from the outside to the inside, the end of the receiving part 2a will first abut against and withstand the upper side of the movable engaging part 4a from the outside to the inside, making it bend downward At the same time, the hollow area surrounded by each movable snap-in portion 4a is enlarged; when the plug-in connection portion 1a continues to move inward and is inserted, the inner part of the movable snap-in portion 4a will remain in contact with the outer portion of the plug-in connection portion 1a. The walls are in abutting state and slide along the outer wall until the end of the plug-in connection part 1a is abutted and can no longer move inward. At this time, if the connecting part 1a is pulled out relative to the receiving part 2a, the movable clamping part 4a on the locking connector 4 that is annularly distributed around the outer side of the connecting part 1a will be more closely fitted or even embedded in the inner end. The connection part 1a realizes the effect of locking and fixing the inflatable tube 1 and the inflatable connecting seat 2 .

The connecting assembly 3 also includes an unlocking trigger 5 for releasing the fixed state between the connecting part 1a and the receiving part 2a when the inflatable tube 1 and the inflatable connecting seat 2 need to be disassembled to separate the two parts. The unlocking trigger 5 has a hollow tubular shape as a whole, can be sleeved and installed between the connecting part 1a and the receiving part 2a, and can reciprocate along the axial direction of the inflation tube 1. The unlocking trigger 5 includes There is an abutting portion 5a that can be inserted into the space between the outer wall of the connecting portion 1a and the inner wall of the receiving portion 2a, when the connecting portion 1a and the receiving portion 2a are fixedly connected together under the use of the locking connector 4 , the unlocking trigger 5 can move to one end of the locking connector 4 and abut against the upper surface of the movable engaging part 4a through its lower edge, so that the further bending of the movable engaging part 4a deform and separate from the outer wall surface of the connecting portion 1a, releasing the locked and fixed state. Specifically, the unlocking trigger 5 also includes a limiting portion 5b extending horizontally at the outer end thereof, the radial dimension of the limiting portion 5b is larger than the radial dimension of the receiving portion 2a, and when pressed When the limiting part 5b moves the unlocking trigger 5 inward as a whole, the connecting part 1a enters the receiving part through the abutting effect of the lower surface of the limiting part 5b and the upper surface of the receiving part 2a. 2a The internal depth is limited to prevent it from entering too much and not being able to pop out.

Because when actually using the inflatable tube seat connecting device, sometimes it is not necessary to disassemble the inflatable tube 1 and the inflatable connecting seat 2, but to adjust the insertion depth of the two parts, that is, it is necessary to temporarily release the connecting part 1a and the receiving part The connection lock effect is restored immediately after the connection lock state between 2a. According to this use requirement, when the locking connector 4 and the unlocking trigger 5 are used together, the structural dimensions of the two parts are designed so that when the unlocking trigger 5 is pushed down to the lowest position, the lower surface of the limiting part 5b It abuts against the upper surface of the receiving portion 2a and bends and deforms the movable engaging portion 4a by pressing, at this time, the lower edge of the limiting portion 5b will not exceed the movable engaging portion 4a. At this time, the upper surface of the movable clamping part 4a can always be attached to the lower end surface of the unlocking trigger 5, so that when the pressing effect on the unlocking trigger 5 is released, it can be released under the elastic action of the movable clamping part 4a. It is lifted up and reset, so as to avoid the situation that the unlocking trigger 5 cannot be rebounded and reset due to self-locking.

Preferably, in order to further improve the effect of connection and fixing, several annular grooves in the shape of circular inward depressions and arranged at intervals along the axial direction of the connection part 1a can also be formed on the outer peripheral surface of the connection part 1a, for connecting with the connection part 1a. The movable clamping portion 4a cooperates and abuts to obtain a greater abutting force. Further, the connecting part 1a can be made of nylon material with a certain degree of elasticity, which can not only increase the frictional force when the inner end of the movable clamping part 4a is closely attached to the surface or embedded, but also can When the outer wall surface of the component is dented and damaged due to abutting force, it will automatically rebound and repair under the condition of no force, and regain the ability to effectively abut and fix the movable clamping part 4a.

Embodiment 2: In the solution described in Embodiment 1 above, it is considered that in the actual use of the connection device for the inflatable tube seat, although the inflatable tube 1 has achieved a stable locking connection with the inflatable connection seat 2, the As the gas chamber is gradually inflated, the air pressure in the gas chamber will gradually increase until it exceeds the external atmospheric pressure. At this time, the gap space between the inflatable tube 1 and the inflatable connection seat 2 will cause the gas to leak outward, which will not only reduce the inflation efficiency, but also cause waste of resources, especially when the above-mentioned inflatable tube seat connection device is used with some oxygen, When the gas is stored in flammable and explosive gas storage devices such as gas, the occurrence of leakage will bring serious safety hazards to surrounding personnel.

Therefore, in this embodiment, a self-sealing structure 6 that can prevent the gas in the air chamber from leaking out from the gap between the connecting portion 1 a and the receiving portion 2 a is provided inside the inflatable connecting seat 2 . Specifically, the self-sealing structure 6 mainly includes an annular elastic sealing ring 6a installed inside the receiving portion 2a, and the elastic sealing ring 6a is installed between the locking connector 4 and the stepped surface. Between them, the outer peripheral surface is closely attached to and fixed to the inner wall of the accommodating portion 2a, and the inner peripheral surface of the elastic sealing ring 6a extends from the outside to the inside to form a tapered sealing portion 6a1 protruding toward the air chamber side. When the inflatable tube 1 is inserted, the outer tube wall located at the lower part will adhere to the inner wall surface of the conical sealing part 6a1, and when the leaked part of the gas enters the annular space of the conical sealing part 6a1 near the air chamber from the inside to the outside , the tapered sealing portion 6a1 will be more closely attached to the surface of the inflatable tube 1, and the sealing effect will become better as the air pressure increases, achieving an effective barrier sealing effect.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the technical scope disclosed in the present invention. Modifications or replacements shall all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

An inflatable tube base connection device, characterized in that it includes an inflatable tube (1) for filling gas into the air chamber of a desired inflatable product and an inflatable connection seat for cooperating with the inflatable tube (1) installed (2); the inflatable tube (1) is in the shape of a hollow cylinder as a whole, one end of the inflatable tube (1) is connected to the air pump equipment, and the other end is formed to be connected and fixed with the inflatable connecting seat (2). Connecting part (1a); the inflatable connecting seat (2) is fixedly installed on the wall surface of the air chamber, and the central part of the inflatable connecting seat (2) is provided with a housing part (2a) that penetrates the inner and outer walls of the air chamber for supplying The connecting part (1a) is inserted and accommodated; the connecting part (1a) and the receiving part (2a) also includes a connecting component (3 ).
The connection device for an inflatable tube seat according to claim 1, characterized in that: the connection component (3) includes a device that can be inserted into the receiving part (2a) from the outside to the inside of the connection part (1a). To prevent the reverse movement of the two parts from separating from each other and maintain a stable connection state, there is also a locking connector (4) that can release the connection and fixing effect of the locking connector (4) when the two parts need to be disassembled and separated the unlock trigger (5).
The connecting device of the inflatable tube seat according to claim 2, characterized in that: the locking connector (4) is in the shape of a hollow ring as a whole, and the outer surface of the locking connector (4) is in contact with the The inner wall surface of the receiving part (2a) is fixedly connected, and the inner surface of the locking connector (4) protrudes inwardly to form a movable engaging part (4a) for abutting against the outer wall surface of the connecting part (1a) ; the movable engaging part (4a) can slide along the outer wall surface of the plug-in connection part (1a) when the connecting part (1a) is inserted into the receiving part (2a), and the connecting part (1a) When it is inserted into the receiving part (2a) and then pulled out and tends to be separated from the receiving part (2a), it can be more tightly fitted and fixed to the outer wall surface of the plug-in connection part (1a) , to achieve a locking and fixing effect between the inflation tube (1) and the inflation connection seat (2).
The connecting device of the inflatable tube seat according to claim 3, characterized in that: the movable clamping part (4a) is in the shape of a sheet protruding inward from the inner side of the locking connector (4), and the The movable clamping part (4a) is bent toward one end of the air chamber along the insertion direction of the plug connection part (1a).
According to claim 4, the connecting device of the inflatable pipe seat is characterized in that: there are several movable clamping parts (4a) distributed around the inner circumference of the annular locking connector (4) and are connected to each other. The adjacent movable clamping parts (4a) are evenly arranged at equal intervals.
The connecting device of the inflatable tube seat according to claim 4, characterized in that: the unlocking trigger (5) is in the shape of a hollow tube as a whole, and can be sleeved and installed on the connecting part (1a) and the receiving part (2a) ) and move reciprocatingly along the axial direction of the inflatable tube (1), the unlocking trigger (5) includes a The abutting part (5a) of the space, when the connecting part (1a) and the receiving part (2a) are fixedly connected together under the use of the locking connecting part (4), the unlocking trigger part (5) It can move to one end of the locking connector (4) and abut against the upper surface of the movable clamping part (4a) through its own lower edge, so that the movable clamping part (4a) can be further bent and deformed. It is separated from the outer wall surface of the connecting part (1a), and the locked and fixed state is released.
The connecting device for an inflatable tube seat according to claim 6, characterized in that: the unlocking trigger (5) further includes a limit portion (5b) extending horizontally at the outer end thereof, the limit The radial dimension of the part (5b) is larger than the radial dimension of the receiving part (2a), and the abutting effect of the lower surface of the limiting part (5b) and the upper surface of the receiving part (2a) is , to realize the limitation of the depth of the connection part (1a) entering the interior of the receiving part (2a).
The connection device of the inflatable tube seat according to claim 6, characterized in that: when the lower surface of the limiting part (5b) is abutted against the upper surface of the receiving part (2a) and pressed, the When the movable engaging portion (4a) is bent and deformed, the lower edge of the limiting portion (5b) does not exceed the movable engaging portion (4a).
The inflatable pipe seat connection device according to claim 7 or 8, characterized in that: the interior of the inflatable connection seat (2) is also provided with a device that can prevent the gas in the air chamber from passing through the connecting part (1a) and the receiving part (2a) A self-sealing structure (6) that leaks outward from the gap between them.
The connection device of the inflatable tube seat according to claim 9, characterized in that: the self-sealing structure (6) mainly includes an elastic sealing ring (6a) installed inside the receiving part (2a) in an annular shape , the outer peripheral surface of the elastic sealing ring (6a) is tightly fitted and fixed to the inner wall of the receiving part (2a), and the inner peripheral surface of the elastic sealing ring (6a) extends from the outside to the inside to form a side toward the air chamber The raised tapered sealing part (6a1) is used to closely fit with the outer surface of the connecting part (1a) to achieve a sealing effect.