A gas excitation structure with adjustable pulling force

Abstract

The present invention relates to the technical field of gas exciters, and provides a gas excitation structure with adjustable pulling force, which includes a housing, a trigger assembly and a latch portion. The trigger assembly is used to excite a compressed gas cylinder, and an adjustment assembly is added. The adjustment assembly includes a slider and a pressure adjustment mechanism. The pressure adjustment mechanism is arranged on the housing and connected to the slider, and is used to adjust the magnitude of the force exerted by the slider on the latch portion. Through the above technical solution, the problem that the excitation pulling force of the gas exciter in the prior art cannot be adjusted is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas exciters, and specifically, to a gas excitation structure with adjustable pulling force. Background Art

[0002] In various sports such as driving, cycling, skiing, etc., people may fall or have traffic accidents. To ensure the safety of people, various wearable airbag suits are used to reduce the harm when people are impacted. The activation principle of the airbag mostly relies on a gas exciter to excite the high-pressure gas in a compressed gas cylinder, so that the airbag is quickly filled.

[0003] The gas exciter in the prior art pulls out the activation pin of the exciter by an external pulling force. The other end of the pin is fixed on an external carrier (such as a motorcycle or a horse, etc.). The gas exciter has only a fixed excitation value, and the fixed excitation value is generally very large. The purpose is to prevent accidental triggering of the gas cylinder when a person forgets to disconnect the connecting rope when leaving the external carrier or to prevent accidental triggering when the external carrier jolts severely. When an accident occurs, the person separates from the external carrier, and the gas exciter on the person's body moves away from the external carrier, providing a force to pull out the pin. When this force reaches the fixed excitation value, the pin disengages, and the striker excites the compressed gas cylinder, so that the airbag is quickly filled to play a protective role;

[0004] If the external carrier used in the sport by a person is heavy (such as a motorcycle or a horse), then when a danger occurs, the self-weight of the external carrier itself can provide enough pulling force to pull the pin. However, when the external carrier is light, the adaptability of the gas exciter cannot meet the requirements. For example, for a bicycle, especially in today's society, bicycle sports pursue lightweight, and may not be able to provide enough pulling force. This requires using a gas exciter with a corresponding excitation value, resulting in an increase in cost;

[0005] Moreover, in some sports, the user may need to pull out the pin by himself to excite. However, it is very difficult for a person to generate a large pulling force in a critical moment. Therefore, the excitation value needs to be adjustable to meet different usage scenarios of the gas exciter. In view of the above problems, the prior art has not been well solved, bringing trouble to the normal progress of work in this field. Therefore, there is an urgent need for a gas exciter with adjustable pulling force. Summary of the Invention

[0006] The present invention provides a gas excitation structure with adjustable pulling force, which solves the problem that the excitation pulling force of the gas exciter in the related art is not adjustable.

[0007] The technical solution of the present invention is as follows: A gas excitation structure with adjustable pulling force, including a housing, a trigger assembly and a pin part. The trigger assembly is used to excite a compressed gas cylinder, and an adjusting assembly is added. The adjusting assembly includes a slider and a pressure adjusting mechanism. The slider is slidably arranged in the housing. There is a receiving part in the housing. A pin receiving cavity is formed between the receiving part and the slider. The pin part is located in the pin receiving cavity. The pressure adjusting mechanism is arranged on the housing and connected to the slider for adjusting the magnitude of the force exerted by the slider on the pin part.

[0008] As a further technical solution,

[0009] The trigger assembly includes a swing arm and a pushing member. The pushing member is slidably arranged in the housing. The swing arm is swingably arranged in the pin receiving cavity. One side of the free end of the swing arm abuts against the pin part, and the other side abuts against the receiving part. The pushing member abuts against the swing arm for providing the force exerted by the swing arm on the pin part. The trigger assembly and the adjusting assembly are respectively located on both sides of the pin part.

[0010] The abutting point between the pushing member and the swing arm is S1, the abutting point between the swing arm and the pin part is S2, and the hinge point of the swing arm is S3. The distance between S1 and S2 is greater than the distance between S1 and S3.

[0011] As a further technical solution,

[0012] The pressure adjusting mechanism includes a first elastic member, an adjusting plate, a screw rod and a screw cap. The adjusting plate is slidably arranged in the housing. Both ends of the first elastic member act on the slider and the adjusting plate respectively. The screw cap is detachably arranged at the end of the housing. The screw rod is threadedly connected to the adjusting plate. The screw rod is rotatably arranged on the screw cap and its end extends out of the screw cap.

[0013] As a further technical solution,

[0014] A first strip-shaped hole is formed in the side wall of the housing. A plurality of scale lines are distributed along the direction of the first strip-shaped hole on the side wall of the housing. An indicating arrow is provided on the adjusting plate. The indicating arrow slides in the first strip-shaped hole.

[0015] As a further technical solution,

[0016] The triggering component further includes a sliding bin, a second elastic member, an end cap, and a puncturing mechanism. The sliding bin is slidably disposed in the housing. The pushing member is disposed on the sliding bin. The puncturing mechanism is linked with the sliding bin and is used for triggering the compressed gas cylinder. The end cap is detachably disposed at the end of the housing. The second elastic member is located in the sliding bin, and two ends of the second elastic member respectively act on the end cap and the inner wall of the sliding bin to provide the force for the pushing member to act on the swing arm.

[0017] As a further technical solution,

[0018] The receiving portion has a first limiting inclined surface, and one side of the free end of the swing arm facing the sliding bin has a second limiting inclined surface, and the second limiting inclined surface abuts against the first limiting inclined surface.

[0019] As a further technical solution,

[0020] The puncturing mechanism includes a puncturing frame and a gas cylinder installation bin. The gas cylinder installation bin is detachably disposed on the housing. A sliding channel is provided in the gas cylinder installation bin. The puncturing frame slides in the sliding channel. The puncturing frame is linked with the sliding bin. The gas cylinder installation bin has a gas cylinder installation port and a gas output port. The puncturing frame has a puncturing needle. The sliding channel is coaxially arranged with the gas cylinder installation port. The gas cylinder installation port is used for installing the compressed gas cylinder, and the gas output port is used for communicating with the airbag.

[0021] As a further technical solution,

[0022] The sliding channel includes a sliding cavity and a sealing cavity. The cross-sectional diameter of the sealing cavity is larger than that of the sliding cavity. A sealing block is arranged between the puncturing frame and the puncturing needle. The sealing block is located in the sealing cavity. A sealing ring is arranged at one end of the sealing block facing away from the puncturing needle. A sealing groove is provided on the inner wall of the sealing cavity facing away from the puncturing needle for cooperating with the sealing ring.

[0023] As a further technical solution,

[0024] The pinning portion includes a clamping sphere and a pin shaft. The center of the clamping sphere has a through hole and notches are provided at both the top and the bottom. The pin shaft is located in the through hole. A limiting body is provided at the bottom of the pin shaft, and the limiting body is located in the notch at the bottom of the clamping sphere. A triggering rope is further included. One end of the triggering rope is connected to the top of the pin shaft, and the other end is used for connecting to an external carrier.

[0025] As a further technical solution,

[0026] The slider is connected to a base, the base is located below the clamping sphere, a relief notch is formed in the base along the sliding direction of the slider, and the pin receiving cavity is spherical and matches the outer contour of the clamping sphere.

[0027] The working principle and beneficial effects of the present invention are as follows: A trigger assembly and an adjustment assembly are provided inside the housing, and are respectively located on both sides of the pin portion. The trigger assembly is used to activate the compressed gas cylinder. Elastic energy storage units are provided inside both the trigger assembly and the adjustment assembly. The adjustment assembly is used to provide an elastic force for blocking the trigger assembly from activating the gas cylinder. The adjustment assembly includes a pressure adjustment mechanism and a slider. The pressure adjustment mechanism is used to adjust the magnitude of the elastic force exerted by the slider on the pin portion.

[0028] Specifically, the thrust of the pusher is essentially the force that finally activates the compressed gas cylinder. To ensure the success rate of activating the gas cylinder, this force should be large enough. The force provided by the pressure adjustment mechanism is essentially the threshold required to pull out the pin portion. This threshold is set to be adjustable through the pressure adjustment mechanism, thus solving the problem that the pulling force of the gas actuator in the prior art is not adjustable and enabling adaptation to various usage scenarios. Since the pusher in this structure has a large thrust and the force provided by the pressure adjustment mechanism is variable, when the pusher and the slider act on both sides of the pin portion on the same axis simultaneously, the forces on both sides need to be the same to ensure the stability of the pin portion without deviation. For this reason, on the one hand, a receiving portion is provided inside the housing, and the side of the free end of the swing arm facing away from the pin portion abuts against the receiving portion. Therefore, the force exerted by the slider on the pin portion will finally act on the receiving portion through the swing arm, thereby realizing that when the pressure adjustment mechanism increases the pressure on the pin portion, the pressure will finally act on the receiving portion and will not cause displacement of the pin portion in the pin receiving cavity. On the other hand, the pusher does not directly act on the pin portion. The contact point between the pusher and the swing arm is S1, the contact point between the swing arm and the pin portion is S2, and the hinge point of the swing arm is S3. The distance between S1 and S2 is greater than the distance between S1 and S3. By changing the length of the force arm, the relatively large force provided by the pusher is reduced by the swing arm and finally acts on the pin portion. The force finally acting on the pin portion by the swing arm is very small, and this force should preferably be less than or equal to the minimum elastic force that the pressure adjustment mechanism can provide to prevent the pin portion from shifting towards the slider side when the pressure adjustment mechanism provides the minimum force.

[0029] The pin - locking part is connected to an external carrier, which can be a motorcycle, a horse, etc. When an accident occurs and a person falls from the external carrier, the gas actuator attached to the human body will move away from the external carrier along with the human body. By relying on the weight of the external carrier, the pin - locking part is pulled out of the pin - locking cavity. In some scenarios, it can also be that the person controls the activation independently, and the person only needs to pull out the pin - locking part by themselves. After the pin - locking part is pulled out, it can no longer block the swing arm. After the swing arm gives way, the elastic thrust of the push rod is released, thereby enabling the trigger assembly to activate the compressed gas cylinder. The high - pressure gas quickly fills the airbag, playing a protective role. In order to meet the different usage scenarios of the gas actuator, it is necessary to have an adjustable pulling force value and also keep the force for piercing the high - pressure gas cylinder constant to ensure the best airbag inflation effect. In the present invention, the force for piercing the high - pressure gas cylinder and the force for pulling out the pin - locking part are set separately, meeting the different usage scenarios of the gas actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0031] Figure 1 Schematic diagram of the gas activation structure of the present invention;

[0032] Figure 2 Schematic diagram of the structure of the pin - locking cavity of the present invention;

[0033] Figure 3 For the present invention Figure 2 Enlarged view at A in

[0034] Figure 4 Schematic diagram of the structure of the pin - locking cavity of the present invention from another angle;

[0035] Figure 5 For the present invention Figure 4 Enlarged view at B in

[0036] Figure 6 Cross - sectional view of the gas activation structure of the present invention;

[0037] Figure 7 For the present invention Figure 6 Enlarged view at C in

[0038] Figure 8 Schematic diagram of the internal structure of the housing of the present invention;

[0039] Figure 9 Schematic diagram of the structure of the puncture mechanism of the present invention;

[0040] Figure 10 For the present invention Figure 9 Enlarged view at D in

[0041] Figure 11It is a schematic diagram of the trigger component of the present invention adopting other structural forms;

[0042] In the figure: 1, housing, 2, bayonet portion, 3, compressed gas cylinder, 4, slider, 5, receiving portion, 6, bayonet accommodating chamber, 7, swing arm, 8, push piece, 9, first elastic member, 10, adjustment plate, 11, screw rod, 12, screw cap, 13, first strip hole, 14, scale line, 15, indicator arrow, 16, sliding compartment, 17, second elastic member, 18, end cover, 19, first limit inclined surface, 20, second limit inclined surface , 21. puncture rack, 22. gas cylinder installation compartment, 23. sliding channel, 24. gas cylinder installation port, 25. gas output port, 26. puncture needle, 27. sliding cavity, 28. sealing cavity, 29. sealing block, 30. sealing ring, 31. sealing groove, 32. snap-on ball, 33. pin shaft, 34. limiting body, 35. excitation rope, 36. base, 37. clearance gap, 38. second strip hole, 39. connecting rod. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figures 1 to 10 As shown, this embodiment proposes a gas excitation structure with adjustable tension, including a shell 1, a trigger assembly and a pin portion 2, the trigger assembly is used to excite a compressed gas cylinder 3, an adjustment assembly is additionally provided, the adjustment assembly includes a slider 4 and a pressure adjustment mechanism, the slider 4 is slidably arranged in the shell 1, the shell 1 has a receiving portion 5, a pin accommodating cavity 6 is formed between the receiving portion 5 and the slider 4, the pin portion 2 is located in the pin accommodating cavity 6, the pressure adjustment mechanism is arranged on the shell 1 and connected to the slider 4, and is used to adjust the force exerted by the slider 4 on the pin portion 2.

[0045] Furthermore, it also includes,

[0046] The trigger assembly includes a swing arm 7 and a push piece 8. The push piece 8 is slidably disposed in the housing 1. The swing arm 7 is swingably disposed in the bayonet accommodating cavity 6. One side of the free end of the swing arm 7 abuts against the bayonet portion 2, and the other side abuts against the receiving portion 5. The push piece 8 abuts against the swing arm 7 to provide a force for the swing arm 7 to act on the bayonet portion 2. The trigger assembly and the adjustment assembly are respectively located on both sides of the bayonet portion 2.

[0047] The contact point between the ejector 8 and the swing arm 7 is S1, the contact point between the swing arm 7 and the latch portion 2 is S2, and the hinge point of the swing arm 7 is S3. The distance between S1 and S2 is greater than the distance between S1 and S3.

[0048] In this embodiment, a trigger assembly and an adjustment assembly are arranged in the housing 1, located on both sides of the latch portion 2 respectively. The trigger assembly is used to activate the compressed gas cylinder 3. Elastic energy storage units are arranged in both the trigger assembly and the adjustment assembly. The adjustment assembly is used to provide an elastic force to block the trigger assembly from activating the gas cylinder. And the adjustment assembly includes a pressure adjustment mechanism and a slider 4. The pressure adjustment mechanism is used to adjust the magnitude of the elastic force exerted by the slider 4 on the latch portion 2.

[0049] Specifically, the thrust of the ejector 8 is essentially the force that finally activates the compressed gas cylinder 3. To ensure the success rate of activating the gas cylinder, this force should be large enough. And the force provided by the pressure adjustment mechanism is essentially the threshold required to pull out the latch portion 2. This threshold is set to be adjustable through the pressure adjustment mechanism, thus solving the problem that the pulling force of the gas activator in the prior art is not adjustable and enabling adaptation to various usage scenarios. Since the ejector 8 has a large thrust in this structure and the force provided by the pressure adjustment mechanism is variable, when the ejector 8 and the slider 4 act on both sides of the latch portion 2 on the same axis simultaneously, the forces on both sides need to be the same to ensure the stability of the latch portion 2 without deviation. For this reason, on the one hand, a receiving portion 5 is arranged in the housing 1, and the side of the free end of the swing arm 7 facing away from the latch portion 2 abuts against the receiving portion 5. So the force exerted by the slider 4 on the latch portion 2 will finally act on the receiving portion 5 through the swing arm 7, thereby realizing that when the pressure adjustment mechanism increases the pressure on the latch portion 2, the pressure will finally act on the receiving portion 5 and will not cause the latch portion 2 to displace in the latch receiving cavity 6. On the other hand, the ejector 8 does not directly act on the latch portion 2. The contact point between the ejector 8 and the swing arm 7 is S1, the contact point between the swing arm 7 and the latch portion 2 is S2, and the hinge point of the swing arm 7 is S3. The distance between S1 and S2 is greater than the distance between S1 and S3. By changing the length of the force arm, the relatively large force provided by the ejector 8 is reduced by means of the swing arm 7 and finally acts on the latch portion 2. The force finally acting on the latch portion 2 by the swing arm 7 is very small, and this force should preferably be less than or equal to the minimum thrust that the pressure adjustment mechanism can provide to prevent the latch portion 2 from shifting towards the slider 4 side when the pressure adjustment mechanism provides the minimum force.

[0050] The pin clamping part 2 is connected to an external carrier, which can be a motorcycle, a horse, etc. When an accident occurs and a person falls from the external carrier, the gas actuator attached to the human body will move away from the external carrier together with the human body, and the weight of the external carrier is used to pull out the pin clamping part 2 from the pin accommodating cavity 6. In some scenarios, it can also be that the person controls the activation independently, and only needs to pull out the pin clamping part 2 by himself. After pulling out the pin clamping part 2, the pin clamping part 2 can no longer block the swing arm 7. After the swing arm 7 gives way, the elastic thrust of the push rod is released, so as to activate the compressed gas cylinder 3 by the trigger assembly, and the high-pressure gas quickly fills the airbag to play a protective role;

[0051] This embodiment can achieve that a few seconds before the collision danger is about to occur, the person pulls out the pin in advance to activate the airbag, and gives the airbag inflation to gain a lead time to protect the person, rather than after the collision, the airbag will be activated only after the person is separated from the external carrier, which cannot reduce the harm of the first impact. The existing AI intelligent electronic control gas actuator activates the airbag according to a multi-axis attitude sensor, which requires a large amount of data support and will activate the airbag only when it detects that the person's movement exceeds the safety value. However, in many cases, there will be false explosions or non-explosions, and it also cannot achieve activating the airbag a few seconds before the collision danger is about to occur in a normal posture, so it cannot play a role in protecting the person in advance. For example, riding a motorcycle and hitting straight; for example, a beginner skiing at high speed and hitting a hard object such as a slide enclosure directly; for example, doing high-difficulty extreme rolling movements, only the person himself knows whether the posture is normal and how high the risk is after landing, and activates the airbag at an opportune moment; for example, falling into water, it is necessary to pull out the pin by oneself to activate the airbag to generate buoyancy; this embodiment can change the previous passive airbag protection into a main-passive integrated airbag protection, which can better improve the comprehensiveness of protection; in order to meet the different usage scenarios of the gas actuator, it is necessary to make the pulling force value adjustable and keep the force for piercing the compressed gas cylinder 3 constant to ensure the best airbag inflation effect. In this embodiment, the force for piercing the compressed gas cylinder 3 and the force for pulling out the pin clamping part 2 are set separately, which meets the different usage scenarios of the gas actuator.

[0052] Furthermore, it also includes,

[0053] The pressure regulating mechanism includes a first elastic member 9, an adjusting plate 10, a screw rod 11 and a screw cap 12. The adjusting plate 10 is slidably arranged in the housing 1. Two ends of the first elastic member 9 respectively act on the slider 4 and the adjusting plate 10. The screw cap 12 is detachably arranged at the end of the housing 1. The screw rod 11 is in threaded connection with the adjusting plate 10. The screw rod 11 is rotatably arranged on the screw cap 12 and its end extends out of the screw cap 12.

[0054] In this embodiment, the pressure regulating mechanism uses a screw 11 to regulate the pressure. Specifically, the screw cap 12 is detachably arranged at the end of the housing 1, such as by snap connection or screw connection. The screw 11 is rotatably arranged on the screw cap 12. When the pressure needs to be adjusted, the part of the screw 11 protruding from the screw cap 12 is rotated. Since the adjusting plate 10 is in threaded cooperation with the screw 11, the movement of the adjusting plate 10 can be controlled. Guide grooves are provided on both sides of the adjusting plate 10, and guide rails matching the guide grooves are provided on the inner wall of the housing 1 to guide the movement of the adjusting plate 10. After the adjusting plate 10 moves towards the slider 4, the first elastic member 9 is compressed, so as to transmit the elastic pressure to the slider 4, causing the slider 4 to abut against the latch portion 2. The first elastic member 9 is preferably a cylindrical spring. The pressure regulating mechanism can also be other mechanisms that can provide elastic pressure to the slider 4.

[0055] Further, it also includes

[0056] A first strip-shaped hole 13 is provided on the side wall of the housing 1. A plurality of scale lines 14 are distributed on the side wall of the housing 1 along the direction of the first strip-shaped hole 13. An indicating arrow 15 is provided on the adjusting plate 10, and the indicating arrow 15 slides in the first strip-shaped hole 13.

[0057] In this embodiment, a plurality of scale lines 14 and digital marks corresponding to the pressure magnitudes are marked on the outer wall of the housing 1. The user can conveniently see the current position of the adjusting plate 10 and the magnitude of the elastic force exerted by the slider 4 on the latch portion 2 through the indicating arrow 15, so as to conveniently adjust the threshold for pulling the latch portion 2 to adapt to more usage scenarios.

[0058] Further, it also includes

[0059] The trigger assembly further includes a sliding chamber 16, a second elastic member 17, an end cap 18 and a puncturing mechanism. The sliding chamber 16 is slidably arranged in the housing 1. The pushing member 8 is arranged on the sliding chamber 16. The puncturing mechanism is linked with the sliding chamber 16 and is used to activate the compressed gas cylinder 3. The end cap 18 is detachably arranged at the end of the housing 1. The second elastic member 17 is located in the sliding chamber 16, and both ends of the second elastic member 17 act on the end cap 18 and the inner wall of the sliding chamber 16 respectively to provide the force for the pushing member 8 to act on the swing arm 7.

[0060] In this embodiment, a second strip-shaped hole 38 is formed in the side wall of the housing 1. A connecting rod 39 is provided on the sliding bin 16. The connecting rod 39 extends out of the second strip-shaped hole 38 and can slide in the second strip-shaped hole 38. The connecting rod 39 is linked with the puncturing mechanism. When the pin portion 2 is pulled out, the swing arm 7 swings, and the pushing member 8 is no longer blocked, releasing the elastic potential energy stored in the second elastic member 17. The connecting rod 39 slides in the second strip-shaped hole 38 and pushes the puncturing mechanism to activate the compressed gas cylinder 3. The end cover 18 is detachably arranged (such as by threaded connection or snap connection) at the end of the housing 1, which is convenient for opening the housing 1 for operation when the second elastic member 17 needs to be replaced or debugging and maintenance are required.

[0061] As Figure 11 shown, other forms can also be added to the connection structure between the pushing member 8 and the swing arm 7. In the figure, a crank is added inside the housing 1. The crank is hinged inside the housing 1. The free end of the crank has a limiting post. It also includes a connecting rod. One end of the connecting rod has a strip-shaped slideway. The limiting post is located in the slideway. The other end of the connecting rod is hinged to the swing arm 7. This hinged position is close to the hinged point of the swing arm 7. The contact point between the pushing member 8 and the crank is close to the hinged point of the crank itself. The pushing member 8 can swing the crank by pushing, and the free end of the crank drives the swing arm 7 to swing through the connecting rod, thereby releasing the elastic potential energy of the pushing member 8. Such a setting is because the force exerted by the swing arm 7 on the pin portion 2 needs to be ensured to be less than or equal to the minimum force that the pressure regulating mechanism can provide. When the number of compressed gas cylinders 3 to be increased exceeds 2, the corresponding gas cylinder installation bins 22 will also increase accordingly. Then the force required for the overall puncturing frame 21 to puncture all the compressed gas cylinders 3 will increase. To ensure the effectiveness of puncturing all the compressed gas cylinders 3, it is necessary to replace the second elastic member 17 with a greater elastic force. Since the elastic force of the second elastic member 17 increases, the force exerted by the pushing member 8 on the swing arm 7 will also increase. Therefore, a longer force arm is required to meet the above requirements. However, when the swing arm 7 is lengthened, the overall volume of the device will increase. In order not to increase the volume of the device and meet the above requirements, such a setting is made to indirectly increase the force arm.

[0062] Furthermore, it further includes

[0063] The receiving portion 5 has a first limiting inclined surface 19, and the side of the free end of the swing arm 7 facing the sliding bin 16 has a second limiting inclined surface 20. The second limiting inclined surface 20 abuts against the first limiting inclined surface 19.

[0064] In this embodiment, the free end of the swing arm 7 has a taper, and the second limiting inclined surface 20 abuts against the first limiting inclined surface 19. Such a setting is to prevent the free end of the swing arm 7 from interfering with the surrounding environment when the swing arm 7 swings inward.

[0065] Furthermore, it further includes

[0066] The puncture mechanism includes a puncture frame 21 and a gas cylinder installation chamber 22. The gas cylinder installation chamber 22 is detachably arranged on the housing 1. A sliding channel 23 is arranged in the gas cylinder installation chamber 22. The puncture frame 21 slides in the sliding channel 23. The puncture frame 21 is linked with the sliding chamber 16. The gas cylinder installation chamber 22 has a gas cylinder installation port 24 and a gas output port 25. The puncture frame 21 has a puncture needle 26. The sliding channel 23 is coaxially arranged with the gas cylinder installation port 24. The gas cylinder installation port 24 is used for installing a compressed gas cylinder 3. The gas output port 25 is used for communicating with an airbag.

[0067] In this embodiment, the gas cylinder installation chamber 22 is detachably arranged on the housing 1. The arrangement method can be threaded connection, snap connection or magnetic attraction connection, etc. The cross-section of the sliding channel 23 is cylindrical, and the part of the puncture frame 21 sliding in the sliding channel 23 is also cylindrical. Preferably, there are two compressed gas cylinders 3. The puncture needle 26, the gas cylinder installation port 24 and the gas output port 25 are also correspondingly arranged in two. The connecting rod 39 is linked with the puncture frame 21. The detachable arrangement of the two realizes modular design, which is convenient for replacement and maintenance. After the latch part 2 is pulled out, the swing arm 7 swings, and the pusher 8 and the sliding chamber 16 release the elastic potential energy accumulated by the second elastic member 17. The connecting rod 39 pushes the puncture frame 21 close to the mouth of the compressed gas cylinder 3, and the puncture needle 26 instantly pierces the seal of the compressed gas cylinder 3. The high-pressure gas quickly fills the airbag through the gas output port 25, playing a protective role.

[0068] After the second elastic member 17 releases the elastic potential energy, the connecting rod 39 will impact the puncture frame 21, thereby pushing the puncture needle 26 to pierce the seal of the compressed gas cylinder 3. After the compressed gas cylinder 3 is activated, the high-pressure gas will push the puncture needle 26 back to the initial position. After the puncture needle 26 returns to the initial position, the sealing ring 30 will fit into the sealing groove 31, isolating the sealing cavity 28 from the sliding cavity 27 to avoid gas leakage. After the second elastic member 17 is released, it rebounds and returns to the normal relaxed state. When the second elastic member 17 is in the normal relaxed state, the connecting rod 39 is located below the initial position of the puncture frame 21 and does not provide a force to push the puncture frame 21, so as to ensure that the sealing ring 30 can fit well into the sealing groove 31.

[0069] As Figure 11 shown, the puncture frame 21 has other driving forms. In the figure, a crank is added in the gas cylinder installation chamber 22. The connecting rod 39 abuts against the free end of the crank. The crank abuts against the bottom of the puncture frame 21, and the abutting point is close to the hinge point of the crank. Through this structure, the length of the force arm can be changed, increasing the thrust of the connecting rod 39 and improving the success rate of the puncture frame 21 activating the compressed gas cylinder 3.

[0070] The puncture frame 21 can also be driven in other ways and will not affect the linkage between the sliding bin 16 and the puncture frame 21 for activation. An electric control drive module is added below the puncture frame 21. This electric control drive module is a servo or an electromagnetic coil, which can realize the coexistence of electric control and manual control of the gas exciter. The electric control drive module can provide an extra guarantee for personnel protection during daily use. However, the electric control drive module requires a battery to provide power. Considering that skiers are in a cold environment for a long time, the battery cannot ensure long-term effectiveness in extremely cold weather. Therefore, only manual control of the mechanical activation of the compressed gas cylinder 3 can provide a stable and long-term guarantee. Retaining the mechanical activation and using a compressed gas cylinder 3 with a common simple seal can reduce costs for users.

[0071] Furthermore, it also includes,

[0072] The sliding channel 23 includes a sliding cavity 27 and a sealing cavity 28. The cross-sectional diameter of the sealing cavity 28 is larger than that of the sliding cavity 27. A sealing block 29 is provided between the puncture frame 21 and the puncture needle 26. The sealing block 29 is located in the sealing cavity 28. A sealing ring 30 is provided at one end of the sealing block 29 facing away from the puncture needle 26. The inner wall of the sealing cavity 28 facing away from the puncture needle 26 has a sealing groove 31 for cooperating with the sealing ring 30.

[0073] In this embodiment, in order to prevent gas from leaking from the sliding channel 23 after the compressed gas cylinder 3 is activated, a sealing structure is provided. Specifically, the sliding channel 23 includes a sliding cavity 27 and a sealing cavity 28. Both the sliding cavity 27 and the sealing cavity 28 are cylindrical, and the cross-sectional diameter of the sealing cavity 28 is larger than that of the sliding cavity 27. The sliding cavity 27 allows the puncture frame 21 to slide and plays a guiding role. A sealing block 29 is provided at the end of the puncture frame 21, and the puncture needle 26 is provided on the sealing block 29. The sealing block 29 is cylindrical and slides in the sealing cavity 28. A sealing ring 30 is provided on the end face of the sealing block 29 facing away from the puncture needle 26. On the inner wall of the sealing cavity 28 facing away from the puncture needle 26, there is a sealing groove 31 whose shape matches that of the sealing ring 30. When the puncture needle 26 activates the compressed gas cylinder 3, the high-pressure gas will push the puncture needle 26 back, causing the sealing block 29 to fit against the inner wall of the sealing cavity 28. At this time, the sealing ring 30 fits with the sealing groove 31 to achieve sealing. As shown in the figure, if there is no stepped diameter change designed in the sliding channel 23, the sealing ring 30 needs to be installed on the circumference of the cylinder of the puncture frame 21. At this time, the sealing is achieved by the contact between the sealing ring 30 and the inner wall of the sliding channel 23. When the puncture needle 26 slides in the sliding channel 23, the sealing ring 30 will rub against the inner wall of the sliding channel 23, which not only increases the friction force but also easily damages the sealing ring 30, unable to guarantee the sealing performance and resulting in leakage.

[0074] Furthermore, it also includes,

[0075] The pin clamping part 2 includes a clamping sphere 32 and a pin shaft 33. The center of the clamping sphere 32 has a through hole, and both the top and the bottom have notches. The pin shaft 33 is located in the through hole. The bottom of the pin shaft 33 has a limiting body 34, and the limiting body 34 is located in the notch at the bottom of the clamping sphere 32. It further includes an actuating rope 35. One end of the actuating rope 35 is connected to the top of the pin shaft 33, and the other end is used to connect to an external carrier.

[0076] In this embodiment, when applied to a backpack airbag, if a person needs to pull the pin clamping part 2 independently, it is more convenient to pull the actuating rope 35 from both sides of the back of the person's body. The limiting body 34 is located in the notch at the bottom of the clamping sphere 32 and can move freely within the notch. The pin shaft 33 can achieve universal swing, increasing the installation space for the actuating rope 35, enabling the actuating rope 35 to extend along the side of the body for convenient pulling.

[0077] Furthermore, it further includes

[0078] The slider 4 is connected to a base 36. The base 36 is located below the clamping sphere 32. A relief notch 37 is formed in the base 36 along the sliding direction of the slider 4. The pin clamping cavity 6 is spherical and matches the outer contour of the clamping sphere 32.

[0079] In this embodiment, a relief notch 37 is formed in the base 36 along the sliding direction of the slider 4 to accommodate the swung swing arm 7 and prevent the swing arm 7 from interfering with the slider 4. Incomplete spherical grooves are formed on the base 36, the slider 4, and the receiving part 5, and a spherical pin clamping cavity 6 is formed among the three. The pin clamping cavity 6 matches the outer contour of the clamping sphere 32, enabling the clamping sphere 32 to rotate freely within the pin clamping cavity 6. Moreover, the housing 1 has a notch of greater than or equal to 180° and less than or equal to 270°, allowing the actuating rope 35 to be pulled in more directions.

[0080] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A gas excitation structure with adjustable pulling force, characterized in that, It includes a housing (1), a trigger assembly, and a latch portion (2). The trigger assembly is used to activate a compressed gas cylinder (3). An adjustment assembly is added. The adjustment assembly includes a slider (4) and a pressure adjustment mechanism. The slider (4) is slidably disposed within the housing (1). There is a receiving portion (5) within the housing (1). A latch receiving cavity (6) is formed between the receiving portion (5) and the slider (4). The latch portion (2) is located within the latch receiving cavity (6). The pressure adjustment mechanism is disposed on the housing (1) and connected to the slider (4) for adjusting the magnitude of the force exerted by the slider (4) on the latch portion (2). The trigger assembly includes a swing arm (7) and a pusher (8). The pusher (8) is slidably disposed within the housing (1). The swing arm (7) is swingably disposed within the latch receiving cavity (6). One side of the free end of the swing arm (7) abuts against the latch portion (2), and the other side abuts against the receiving portion (5). The pusher (8) abuts against the swing arm (7) for providing the force exerted by the swing arm (7) on the latch portion (2). The trigger assembly and the adjustment assembly are respectively located on both sides of the latch portion (2). The abutting point between the pusher (8) and the swing arm (7) is S1. The abutting point between the swing arm (7) and the latch portion (2) is S2. The hinge point of the swing arm (7) is S3. The distance between S1 and S2 is greater than the distance between S1 and S3. The pressure adjustment mechanism includes a first elastic member (9), an adjustment plate (10), a screw (11), and a screw cap (12). The adjustment plate (10) is slidably disposed within the housing (1). Both ends of the first elastic member (9) act on the slider (4) and the adjustment plate (10) respectively. The screw cap (12) is detachably disposed at the end of the housing (1). The screw (11) is threadedly connected to the adjustment plate (10). The screw (11) is rotatably disposed on the screw cap (12) and its end extends out of the screw cap (12). The trigger assembly further includes a sliding chamber (16), a second elastic member (17), an end cap (18), and a puncturing mechanism. The sliding chamber (16) is slidably disposed within the housing (1). The pusher (8) is disposed on the sliding chamber (16). The puncturing mechanism is linked with the sliding chamber (16). The puncturing mechanism is used to activate the compressed gas cylinder (3). The end cap (18) is detachably disposed at the end of the housing (1). The second elastic member (17) is located within the sliding chamber (16). Both ends of the second elastic member (17) act on the end cap (18) and the inner wall of the sliding chamber (16) respectively for providing the force exerted by the pusher (8) on the swing arm (7). The puncture mechanism comprises a puncture frame (21) and a gas cylinder mounting chamber (22), the gas cylinder mounting chamber (22) being detachably mounted on the housing (1), a sliding channel (23) being arranged in the gas cylinder mounting chamber (22), the puncture frame (21) sliding in the sliding channel (23), the puncture frame (21) being linked with the sliding chamber (16), the gas cylinder mounting chamber (22) being provided with a gas cylinder mounting port (24) and a gas output port (25), the puncture frame (21) being provided with a puncture needle (26), the sliding channel (23) being coaxially arranged with the gas cylinder mounting port (24), the gas cylinder mounting port (24) being used for mounting a compressed gas cylinder, and the gas output port (25) being used for communicating with a safety airbag; The latching pin portion (2) comprises a latching ball (32) and a pin shaft (33), wherein the latching ball (32) has a through hole at its center and notches at its top and bottom, wherein the pin shaft (33) is located in the through hole, wherein the bottom of the pin shaft (33) has a limiting body (34), wherein the limiting body (34) is located in the notch at the bottom of the latching ball (32), and further comprises an excitation rope (35), wherein one end of the excitation rope (35) is connected to the top of the pin shaft (33), and the other end is used to connect to an external carrier.

2. The gas excitation structure with adjustable pulling force according to claim 1, characterized in that, The side wall of the shell (1) is provided with a first strip-shaped hole (13), the side wall of the shell (1) is provided with a plurality of scale lines (14) distributed along the direction of the first strip-shaped hole (13), the adjustment plate (10) is provided with an indication arrow (15), and the indication arrow (15) slides in the first strip-shaped hole (13).

3. The gas excitation structure with adjustable pulling force according to claim 1, characterized in that, The receiving portion (5) has a first limiting inclined surface (19), and a side of the free end of the swing arm (7) facing the sliding bin (16) has a second limiting inclined surface (20), and the second limiting inclined surface (20) abuts against the first limiting inclined surface (19).

4. A gas excitation structure with adjustable pulling force according to claim 1, characterized in that, The sliding channel (23) comprises a sliding cavity (27) and a sealing cavity (28); the cross-sectional diameter of the sealing cavity (28) is larger than the cross-sectional diameter of the sliding cavity (27); a sealing block (29) is arranged between the puncture frame (21) and the puncture needle (26); the sealing block (29) is located in the sealing cavity (28); a sealing ring (30) is arranged at one end of the sealing block (29) facing away from the puncture needle (26); and a sealing groove (31) is provided on the inner wall of the sealing cavity (28) facing away from the puncture needle (26) for cooperating with the sealing ring (30).

5. A gas excitation structure with adjustable pulling force according to claim 1, characterized in that, The slider (4) is connected to a base (36), the base (36) is located below the engaging ball (32), a clearance notch (37) is provided on the base (36) along the sliding direction of the slider (4), and the latch receiving cavity (6) is spherical and matches the outer contour of the engaging ball (32).

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