CN211010778U

CN211010778U - High-pressure gas cylinder trigger device for emergency air bag

Info

Publication number: CN211010778U
Application number: CN201921907870.1U
Authority: CN
Inventors: 林怡天
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-07-14
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a high-pressure gas cylinder trigger device for emergent gasbag mainly relates to the gasbag field of aerifing. The gas cylinder sealing device comprises a valve seat piece, a valve seat body and a valve seat body, wherein the valve seat piece is provided with a mounting groove and a mounting cavity which are communicated, the mounting groove is used for being in sealing connection with a gas cylinder, an inflation connector connected with a gas bag is arranged on the side wall of the mounting groove, and a clamping hole is arranged on the side wall of the mounting cavity; the trigger piece is arranged in the installation cavity, one end of the trigger piece, which is adjacent to the gas cylinder, is provided with a needle body, the trigger piece can slide in the installation cavity along the length direction of the trigger piece and is limited circumferentially, and the trigger piece is provided with a clamping groove; the limiting piece is arranged in the clamping groove and the clamping hole and limits the trigger piece and the valve seat piece; the elastic piece provides an elastic force for the trigger piece to pierce the gas cylinder in the mounting cavity; and the condom is sleeved outside the valve seat piece and can slide along the length direction of the valve seat piece. The beneficial effects of the utility model reside in that: the novel guide vane is compact and effective in structure, can guide flow quickly, and is superior in stroke constraint and safe operation.

Description

High-pressure gas cylinder trigger device for emergency air bag

Technical Field

The utility model relates to an aerify the gasbag field, specifically be a high-pressure gas cylinder trigger device for urgent gasbag.

Background

Wearing facilities such as waistcoat, riding clothes, jacket and the like with an emergency inflation air bag can be used for providing protection for a rider under the condition of emergency impact. The high-pressure gas cylinder is triggered by the trigger device to instantaneously inflate the air bag.

In the prior art, the triggering device mainly depends on two types of triggering, one type is circuit triggering, and the triggering response is carried out mainly based on circuit connection and solenoid valve control and judgment of a sensor. However, since there is some error probability in identification and judgment in such triggering, and it needs to detect and maintain regularly, the mainstream still relies on mechanical triggering, that is, the striker is temporarily constrained in the preparation position by the limiting member, and when an object occurs and causes separation of a person and a vehicle, the limiting member is pulled down by the connection of the pulling rope and the limiting member, so that the striker is out of constraint and pierces through the high-pressure gas cylinder. This structure does not need to consider the preconditions of circuit connection, whether the sensor is effective, etc., and the triggering is simple but very effective, so that the main products in the field are still focused on mechanically triggered striker mechanisms.

There are many immature sites for the above structure. In real application, the matching condition of the human body and the vehicle, the separation condition of the human body and the vehicle and the movement track of a wearer are very complicated. The man-car separation in a hazardous situation may be at any angle in space to the triggered pull. The condition that people do not ride after wearing gasbag vest also can't expect one by one, this stroke control that just makes this device trigger the action will strengthen more to get rid of the influence of pulling force source as far as possible, avoid the probability of accidental triggering under the state of not riding simultaneously. These are all the core improvement directions of this kind of products, and are the close factors related to the life safety of users and the convenience of application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-pressure gas cylinder trigger device for urgent gasbag, its compact structure is effective, can the water conservancy diversion fast to it is more superior in the aspect of journey restraint and safe operation.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a high pressure gas cylinder triggering device for an emergency gas bag, comprising:

the valve seat piece is provided with a mounting groove and a mounting cavity which are communicated, the mounting groove is used for being hermetically connected with a high-pressure gas cylinder, an inflation interface which is connected with an inflation air bag for inflation is arranged on the side wall of the mounting groove, and a clamping hole is arranged on the side wall of the mounting cavity;

the trigger piece is arranged in the installation cavity, one end of the trigger piece, which is adjacent to the gas cylinder, is provided with a needle body, the trigger piece can slide back and forth in the installation cavity along the length direction of the trigger piece and is limited circumferentially, and the trigger piece is provided with a clamping groove;

the limiting piece is arranged in the clamping groove and the clamping hole and limits the trigger piece and the valve seat piece;

the elastic piece is arranged in the mounting cavity and provides elastic force for the trigger piece to pierce through the gas cylinder;

the condom cup joints in valve seat spare outside, can slide around the length direction of valve seat spare, and the slip stroke includes and will block the hole cover and will block the hole and expose.

Preferably, be equipped with groove structure's insurance screens and operation screens on the outer wall of disk seat spare, be equipped with the wedge dop of symmetry on the inner wall of condom, when the wedge dop card is on insurance screens, the condom covers the locating part in the card hole, when the wedge dop card is on the operation screens, the condom exposes the locating part in the card hole.

Preferably, be equipped with the protruding muscle of outer direction on the lateral wall of disk seat spare, be equipped with the protruding muscle of inner direction in the installation cavity, the length direction of the protruding muscle of outer direction and the protruding muscle of inner direction is unanimous with the stroke direction of trigger piece, be equipped with on the insurance cover inner wall with the protruding muscle sliding fit's of outer direction installation spout, be equipped with on the trigger piece with the protruding muscle sliding fit's of inner direction stroke spout.

Preferably, the valve seat member comprises a sleeve and a blocking cap which are in threaded connection, wherein an internal thread is arranged at one end, away from the blocking cap, of the sleeve, and the sleeve is a mounting groove connected with a high-pressure gas cylinder.

Preferably, a ring-shaped part is arranged between the mounting groove and the mounting cavity, and an inner ring of the ring-shaped part is used for enabling the needle body to penetrate through.

Preferably, the limiting part comprises a ball part, a bushing and a pull rope, the pull rope is fixed on the ball part, the bushing is an annular metal part and is sleeved outside the ball part after penetrating through the pull rope, the inner wall of the bushing is an arc-shaped surface, the opening diameter of one end of the bushing adjacent to the pull rope is smaller than that of the ball part, and the opening diameter of the end surface of the bushing far away from the pull rope is larger than that of the ball part;

trigger part includes gliding plug member around in the installation cavity, the needle body is fixed at the front end of plug member, be fixed with the connecting piece on the rear end terminal surface of plug member, the connecting piece is used for being connected and leading the compression direction of elastic component with the elastic component, the draw-in groove sets up on the lateral wall of plug member, the draw-in groove includes columniform first groove and second groove, the second groove sets up the tank bottom in first groove between two parties, the second groove is used for falling into ball spare, the first groove is used for falling into the bush, the groove depth of first groove is half of bush height.

Contrast prior art, the beneficial effects of the utility model reside in that:

when the pull rope is pulled outwards in any direction under the action of force, the angle of the ball piece is rapidly adjusted, so that the pull rope is kept to be pulled relative to the axial direction of the ball piece, and the pulling force is not influenced by the angle. The design of the preset trigger tension is more accurate, and the effective realization of the function of the device is ensured. The trigger process is quick and effective, the clamping from the circumferential direction can not be realized, the gas diversion is smooth after starting, and the inflation efficiency is obviously improved. The trigger device is used for quickly inflating the safety airbag, and is reliable, efficient and safe.

Drawings

Figure 1 is an exploded view of an assembly of the present invention (springs not shown).

Fig. 2 is a sectional view of the internal structure of the present invention.

Fig. 3 is a schematic diagram of a variation of the present invention.

Fig. 4 is a schematic diagram of a variation of the present invention.

Reference numerals shown in the drawings:

1. a sleeve; 2. a plugging cap; 3. mounting grooves; 4. a mounting cavity; 5. an inflation interface; 6. a via hole; 7. a clamping hole; 8. an outer guide rib; 9. an inner guide convex rib; 10. a needle body; 11. a plug body; 12. a connecting member; 13. a travel chute; 14. a card slot; 15. a ball member; 16. a bushing; 17. pulling a rope; 18. a condom; 19. installing a chute; 20. a yielding groove; 21. a flange; 22. a wedge-shaped chuck; 23. safety clamping; 24. and (6) clamping operation.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

Example (b): high-pressure gas cylinder trigger device for emergency air bag

The main components of the trigger device comprise: valve seat spare, locating part, condom 18, elastic component, trigger piece.

1) The valve seat member comprises a sleeve 1 and a plugging cap 2, wherein the sleeve 1 is used for being connected with a high-pressure gas cylinder and an air bag, providing a shell for other components and providing a connecting channel from the high-pressure gas cylinder for inflation.

The sleeve pipe 1 is specifically of a plastic pipe structure, one end of the sleeve pipe 1 is provided with an internal thread mounting groove 3 in threaded connection with a bottle opening of a high-pressure gas bottle, the side wall of the mounting groove 3 is provided with an inflation interface 5 used for being connected with an air bag, after the inflation interface 5 is in sealed connection with the air bag, gas discharged from the high-pressure gas bottle is triggered, and enters the air bag from a gap of the mounting cavity 4 through the inflation interface 5 to inflate the air bag.

The sleeve pipe is characterized in that an installation cavity 4 communicated with the internal thread installation groove 3 is formed in the sleeve pipe 1 along the length direction of the sleeve pipe, the section of the installation cavity 4 is circular, a ring-shaped piece is arranged between the installation cavity 4 and the installation groove 3, and the installation groove 3 and the installation cavity 4 are communicated through the ring-shaped piece. The inner ring of the ring-shaped part is adapted to the needle body 10, and the striker needle body 10 enters the installation cavity 4 through the ring-shaped part to pierce the bottle mouth of the steel bottle. The gas flow is guided into the gas filling connection 5 by means of a ring element.

The one end that the mounting groove 3 was kept away from to sleeve pipe 1 is equipped with the external screw thread for with stifled cap 2 threaded connection. The blocking cap 2 is provided with internal threads. The bottom surface of the plugging cap 2 is centrally provided with a via hole 6 for inserting a screw rod piece for use in resetting.

The lateral wall of installation cavity 4 is gone up the card hole 7 that link up for with inside trigger part cooperation, realize through the locating part that the relative spacing of valve seat spare and trigger part treats trigger state.

An external guide convex rib 8 is arranged on the side wall of the sleeve 1 along the length direction. In particular on the outer side wall of the portion of the mounting cavity 4. For guiding the travel of the condom 18 in cooperation with the condom 18.

An inner guide convex rib 9 is arranged on the inner wall of the mounting cavity 4 of the sleeve 1 along the length direction and is used for guiding the stroke of the trigger member by being matched with the trigger in advance.

2) The trigger piece comprises a needle body 10, a plug body 11 and a connecting piece 12 which are connected in sequence,

the needle body 10 is used for impaling the steel bottle bottleneck, the front end (the one end of keeping away from cock body 11) of needle body 10 is equipped with the syringe needle, the syringe needle obtains for the inclined plane through the front end, be equipped with the counter bore that the opening is located syringe needle slope terminal surface on the needle body 10, be equipped with the gas pocket on the higher one side lateral wall of counter bore, be equipped with the gas tank on the lower one side lateral wall of counter bore, realize increasing the gassing of flow through gas tank and gas pocket, multiply and aerify efficiency.

The rear end of the needle body 10 is fixed at the center of the front end face of the plug body 11, the plug body 11 is a cylindrical metal piece matched with the installation cavity 4, and a chamfer is arranged at the edge of the front end face of the plug body 11, so that the installation is facilitated and the installation can enter the installation cavity 4.

Connecting piece 12 and plug member integrated into one piece, the setting placed in the middle of plug member rear end terminal surface between two parties for in inserting the helical compression spring of elastic component, proper supplementary messenger's compression goes on at required length direction when the spring compression, avoids compression deformation, the stability of each subassembly when increasing deformation atress.

And a screw hole is formed in the end face of the rear end of the connecting piece 12 and used for being matched with a screw rod during resetting.

The side wall of the plug body 11 is provided with a stroke sliding groove 13 along the length direction, the stroke sliding groove 13 is connected with the inner guide convex rib 9 in a sliding mode and used for guiding the front stroke and the rear stroke of the plug body 11, the forward process of the trigger piece for puncturing the opening of the steel cylinder forward is guaranteed to be circumferential limited, circumferential deviation is avoided, clamping from the circumferential direction cannot be achieved after the limiting, the trigger is guaranteed to be effective, and the plug body 11 is located at a proper position during auxiliary installation and resetting.

On the side wall of the plug body 11, a clamping groove 14 is centrally arranged on the opposite side of the stroke sliding groove 13, and the clamping groove 14 includes a first groove and a second groove, which are respectively used in cooperation with different components of the limiting member. The first groove is a groove with a cylindrical section, the second groove is arranged at the bottom of the first groove in the middle, and the diameter of the second groove is smaller than that of the cylindrical groove of the first groove. After the bush 16 is supported by the groove body of the first groove, the upper part of the bush 16 is positioned in the clamping hole 7 of the shell, and the second groove is used for the ball piece 15 falling into the bush 16 and provides space for the free rotation of the ball piece 15 in the bush 16.

3) The limiting part comprises a ball part 15, a bushing 16 and a pull rope 17.

The ball piece 15 is a spherical metal piece, a groove is arranged on the ball piece 15, and the center line of the groove corresponds to the axis of the ball body. The ball piece 15 is provided with a projection which is cylindrical and extends outwards along the axis of the ball piece 15. Rope holes communicated with the grooves are formed in the convex blocks and the ball pieces 15, and the center lines of the rope holes correspond to the center lines of the grooves. The cross-sections of the cord holes and grooves are both circular in this example. The inner diameter of the rope hole is smaller than that of the groove. The pull rope 17 of this example uses a steel wire rope sheathed with a plastic sheath, and a stopper is fixed at one end of the pull rope 17, and is a metal block pressed at the tail end of the pull rope 17. The stay cord 17 runs through from the rope hole, makes the dog is located the recess, the width of dog is greater than rope hole internal diameter, and the dog can not pass through from the rope hole to make the dog one end of rope spacing on ball 15. The end of the pull rope 17 far away from the stop block is a pull ring, and the ball piece 15 can be driven by pulling the pull ring. For pulling out the bush 16 when the man-car is separated.

The bush 16 is a ring-shaped member, the inner ring surface of the bush 16 is a cambered surface, and the ball member 15 can flexibly roll and adjust a corresponding angle in the bush 16 according to the stress of the pull rope 17. So that pulling forces from all directions in space can create an effective pull on the bushing 16.

The opening at one end of the inner ring of the bushing 16 is a limiting opening, the opening at the other end of the inner ring is defined as a through opening, the inner diameter of the limiting opening is smaller than the outer diameter of the ball piece 15, and the inner diameter of the through opening is larger than the outer diameter of the ball piece 15, so that the ball piece 15 can only be separated from the bushing 16 from one end of the through opening and cannot penetrate through the limiting opening. The stop opening is located adjacent the projection so that when the pull cord 17 pulls the ball 15, the bushing 16 can be pulled out of the trigger device.

When the trigger is installed, the ball element 15 falls into the second groove, one part of the lining 16 is clamped in the clamping hole 7, the bottom part of the lining 16 falls into the first groove, and under the front jacking force of the elastic element, the clamping hole 7 and the first groove are matched with the spiral spring to squeeze the lining 16, so that the static state to be triggered of the trigger relative to the sleeve 1 is realized. The ball 15 can roll freely in the bushing 16 for adaptive rotation to the direction of the pulling force source, so that the transmission of the pulling force can be free from angle influence. And the condition that the trigger can be triggered based on the same design under various angles and complex conditions is ensured.

4) The elastic piece is a spiral compression spring and is arranged in the plugging cap 2. The sleeve is sleeved on the connecting piece 12 and is matched on the sleeve 1 through the thread of the plugging cap 2, and the limiting piece limits the relative position of the sleeve 1 and the plug piece between the clamping hole 7 and the clamping groove 14, so that the sleeve and the plug piece are compressed, and elastic force potential energy obtained by compression has an acting force which pushes the trigger piece to impact the opening of the trigger steel cylinder.

5) The condom 18 is a red semitransparent plastic sheath, in particular a tubular sheath. Sleeved outside the sleeve 1. And can slide back and forth along the cannula 1. Be equipped with installation spout 19 on the lateral wall of condom 18, installation spout 19 and the protruding muscle 8 sliding fit of outer direction for this condom 18 of installation to and when the condom 18 slided around, make the slip circumference of condom 18 spacing, make the groove of stepping down 20 can be located the position that can just in time make stay cord 17 expose all the time, expose stay cord 17 when being convenient for go up insurance. Without stressing the sink assembly.

The position that is relative with installation spout 19 on the lateral wall of condom 18 is equipped with the groove of stepping down 20, the groove of stepping down 20 is used for when pushing away the card hole 7 outside that is located sleeve pipe 1 after the set of current cover, stay cord 17 on the locating part can pass through from this groove of stepping down 20. The inner wall of the condom 18 is provided with an arc-shaped recess around the abdicating groove 20, so that the inner wall of the condom 18 in the peripheral region of the abdicating groove 20 forms an arc-shaped surface which is arched outwards, and is convenient to adapt to the spherical crown part curved surface of the partial limiting ball which is exposed out of the shell.

Flanges 21 are arranged on two sides of the abdicating groove 20, and the flanges 21 extend outwards along one end face of the condom 18, so that the condom 18 can be pushed and controlled conveniently.

The end face, far away from the flange 21, of the condom 18 is provided with an arc-shaped groove for making room for the inflation connector 5 when the condom 18 slides to be close to the mounting groove 3.

The inner wall of the condom 18 is symmetrically provided with wedge-shaped chucks 22, and the wedge-shaped chucks 22 are protrusions which extend inwards to form a wedge shape or a triangular shape.

The utility model discloses a safe position of sleeve pipe 1, including the mounting cavity 4, the mounting cavity is equipped with groove structure's insurance screens 23 and operation screens 24 on sleeve pipe 1's the lateral wall (specifically the partial outside lateral wall that has mounting cavity 4), the external screw thread setting of the adjacent sleeve pipe 1 of insurance screens 23, the setting of the adjacent sleeve pipe 1's of prime number operation screens 24 mounting groove 3, just insurance screens 23 and operation screens 24 can be gone into respectively to wedge dop 22, slides to steel bottle one end when condom 18, when making wedge dop 22 card go into operation screens 24, the part that condom 18 cup jointed on sleeve pipe 1 is totally different with draw-in groove 14 position to make this device be in the user state, be used for riding at any time according to the condition (whether people's car separation) and trigger and aeri. When the condom 18 slides towards one end of the plugging cap 2, so that the wedge-shaped clamping head 22 is clamped into the condom position stop 23, the condom 18 covers the outside of the clamping hole 7, and the pull rope 17 passes through the abdicating groove 20. However, the stopper ball is pressed into the engaging groove 14 by the pressing of the safety sleeve 18, and the stopper does not disengage even if the pull cord 17 is pulled by a predetermined pulling force. The trigger device is kept in a stable non-trigger state under the condition of not using. And the mistaken inflation is avoided, and the assembly and the resource are wasted.

When the assembly is installed, the safety element is sleeved on the sleeve 1 firstly, then the trigger element is inserted, the clamping groove 14 of the trigger element corresponds to the position of the clamping hole 7 of the sleeve 1, and after the trigger element falls into the limiting element, the spring element is placed in the blocking cap 2 and the blocking cap 2 is screwed, so that the spring is in a compression state and waits for triggering.

Claims

1. A high pressure gas cylinder triggering mechanism for an emergency air bag, comprising:

2. The high-pressure gas cylinder triggering device for the emergency gas bag as claimed in claim 1, wherein the outer wall of the valve seat member is provided with a safety detent and an operation detent of a groove structure, the inner wall of the safety sleeve is provided with symmetrical wedge-shaped chucks, when the wedge-shaped chucks are clamped on the safety detent, the safety sleeve covers the limiting member in the detent hole, and when the wedge-shaped chucks are clamped on the operation detent, the safety sleeve exposes the limiting member in the detent hole.

3. The high-pressure gas cylinder trigger device for the emergency gas bag according to claim 1, wherein an outer guide rib is arranged on the side wall of the valve seat member, an inner guide rib is arranged in the installation cavity, the length directions of the outer guide rib and the inner guide rib are consistent with the stroke direction of the trigger member, an installation chute in sliding fit with the outer guide rib is arranged on the inner wall of the safety sleeve, and a stroke chute in sliding fit with the inner guide rib is arranged on the trigger member.

4. A high pressure gas cylinder triggering mechanism for an emergency air bag as claimed in claim 1, wherein said valve seat member comprises a sleeve and a plugging cap which are connected by screw thread, and one end of the sleeve far away from the plugging cap is provided with internal screw thread as a mounting groove connected with the high pressure gas cylinder.

5. A high pressure gas cylinder triggering device for an emergency gas bag according to claim 1, characterized in that a ring-shaped member is arranged between the mounting groove and the mounting cavity, and the inner ring of the ring-shaped member is used for a needle body to penetrate through.

6. A high pressure gas cylinder triggering device for an emergency air bag according to claim 1,

the limiting part comprises a ball part, a bushing and a pull rope, the pull rope is fixed on the ball part, the bushing is an annular metal part and is sleeved and penetrated outside the ball part, the inner wall of the bushing is an arc-shaped surface, the opening diameter of one end of the bushing, which is adjacent to the pull rope, is smaller than the diameter of the ball part, and the opening diameter of the end surface of the bushing, which is far away from the pull rope, is larger than the diameter of the ball part;