Resettable trigger type multi-cylinder piercing mechanism

Abstract

The application provides a resettable trigger type multi-gas cylinder piercing mechanism, which comprises a piercing needle opposite a gas cylinder needle receiving position, a sliding piece reciprocally movable along a piercing direction of the piercing needle, an elastic element acting on the sliding piece to provide kinetic energy for the piercing needle to pierce the gas cylinder, a locking structure for locking the sliding piece to maintain a compressed state of the elastic element, a trigger structure for unlocking the sliding piece, and when unlocked, the sliding piece moves to the gas cylinder under the action of kinetic energy of the spring to push the piercing needle to move and pierce the gas cylinder; the mechanism uses the trigger structure to release the buckling lock and then uses the elastic potential energy stored by the first spring to activate the gas cylinder. Compared with the traditional direct trigger mode of a micro motor, the design avoids the dependence on the torque of a rudder, thereby reducing the demand for a high-performance rudder, while the reliability of the trigger process is maintained.

Description

Technical Field

[0001] This invention relates to the field of safety protection equipment technology, and in particular to a resettable trigger-type multi-cylinder puncture mechanism. Background Technology

[0002] With the increasing aging of the population, the growing number of elderly people has brought about a series of new social problems, among which the frequent occurrence of falls among the elderly is particularly concerning. Many elderly people suffer from chronic diseases that limit their mobility, making them more susceptible to falls. Falls can lead to serious physical injuries, such as hip fractures, paralysis, or long-term disability; in some cases, falls can even result in death.

[0003] To reduce the risk of fall-related injuries among the elderly, a range of fall protection gear has emerged, such as elbow pads, vests, and waist belts. These devices typically incorporate airbags designed to cushion the impact of a fall. These airbags inflate rapidly the moment an elderly person falls, protecting them from injury.

[0004] Currently, gas cylinder devices used in airbags are broadly classified into two categories: explosive triggering and mechanical triggering. Explosive triggering devices utilize the chemical reaction of chemicals to generate explosive force, which propels a piercing needle to puncture the gas cylinder or directly bursts the cylinder opening, thereby achieving rapid gas release (e.g., CN109268683A). Mechanical gas cylinder triggering devices utilize various mechanical structures to puncture the gas cylinder, achieving gas release (e.g., CN210978665U, etc.).

[0005] With increasing demands for the quality of wearable airbag protection, the required inflation volume of airbags has also increased. The instantaneous deployment of airbags further necessitates a high inflation speed. Currently, gas cylinder devices used in airbags are broadly classified into two categories: explosive triggering and mechanical triggering. Most existing explosive gas cylinder triggering devices for chemical products lack stability and economy, cannot be recycled, and are not environmentally friendly, posing risks when used in wearable protective airbags. For example, the (CN109268683A) gas cylinder directional explosion release device is non-recyclable, lacks environmental friendliness, has poor economy, and may suffer from high noise, poor stability, and short shelf life. Most existing mechanical gas cylinder triggering devices suffer from low gas output efficiency, low total gas output, high requirements for motors, or cumbersome reset methods. For example, the (CN210978665U) gas cylinder puncture device suffers from cumbersome reset, high requirements for servo motor performance, and low gas output efficiency. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problems of current airbag protective equipment cylinder triggering devices, such as low air output efficiency, small total air output, insufficient economy, inability to be recycled, lack of environmental protection, high requirements for motors, and cumbersome reset methods. The invention proposes a resettable triggering multi-cylinder puncture mechanism.

[0007] To solve the above-mentioned technical problems, the present invention provides a resettable trigger-type multi-cylinder puncture mechanism, which includes: a puncture needle facing the needle receiving part of the gas cylinder; a sliding member that can reciprocate along the puncture direction of the puncture needle; an elastic element acting on the sliding member to provide kinetic energy for the puncture needle to puncture the gas cylinder; a locking structure for locking the sliding member so that the elastic element is kept in a compressed state; and a triggering structure for unlocking the sliding member. When unlocked, under the action of the kinetic energy of the spring, the sliding member moves towards the gas cylinder, pushing the puncture needle to move and puncture the gas cylinder.

[0008] Furthermore, it also includes a cavity, a sliding member that is slidably connected to the cavity and can slide along the axis of the cavity, the axis of the cavity is the same as the direction of needle insertion, and a locking structure is provided between the sliding member and the cavity.

[0009] Furthermore, the locking structure includes a buckle on the sliding member and a slot on the cavity. The slot penetrates the cavity wall, and the buckle and the slot work together to lock the sliding member. The triggering structure can disengage the buckle from the slot.

[0010] Furthermore, the triggering structure includes a servo motor and a linkage structure driven by the servo motor. When unlocking, under the rotational drive of the servo motor, one end of the linkage structure can extend from outside the cavity into the slot to contact the latch and push the latch out of the slot.

[0011] Furthermore, the linkage structure includes an elliptical linkage located at the output end of the servo motor, a long linkage with one end extending into the slot, and a short linkage with one end hinged to the elliptical linkage at an eccentric point and the other end hinged to the long linkage. The servo motor drives the elliptical linkage to rotate, and the elliptical linkage drives the long linkage to move through the short linkage, so that the end of the long linkage near the slot moves along a predetermined trajectory and extends into the slot.

[0012] Furthermore, the long connecting rod has a rotation axis, and the long connecting rod includes a first end and a second end. The rotation axis is located between the first end and the second end. The short connecting rod can drive the long connecting rod to rotate, so that the first end and the second end of the long connecting rod can move around the rotation axis.

[0013] Furthermore, the triggering structure includes an electromagnet disposed on the outer wall of the cavity and a push rod slidably connected to the slot. The push rod includes a first end and a second end. The first end of the push rod extends from outside the cavity into the slot, and the second end protrudes outside the cavity and can be attracted by the electromagnet. A reset spring is disposed between the second end and the cavity. When the electromagnet is working, it can attract the second end of the push rod, causing the push rod to slide into the cavity in the slot.

[0014] Furthermore, the elastic element is a first spring.

[0015] Furthermore, the needle is fixedly mounted on the sliding component.

[0016] Furthermore, it also includes a cylinder fixing device, into which the cylinder can be inserted, with the cylinder opening facing the needle when the cylinder is fixed.

[0017] As can be seen from the above technical solution, the beneficial effects of the present invention are as follows: the mechanism uses a trigger structure to release the lock of the buckle and then uses the elastic potential energy stored in the first spring to activate the gas cylinder. Compared with the traditional micro motor direct triggering method, this design avoids dependence on servo torque, thereby reducing the need for high-performance servos, while maintaining the reliability of the triggering process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the resettable trigger-type multi-cylinder puncture mechanism provided in this application.

[0019] Figure 2 This is a cross-sectional view of the resettable trigger-type multi-cylinder puncture mechanism provided in this application.

[0020] Figure 3 This is a schematic diagram of the non-triggered state of the triggering mechanism provided in this application.

[0021] Figure 4 This is a schematic diagram of the triggering state of the triggering mechanism provided in this application. Detailed Implementation

[0022] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0023] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] To further illustrate the principles and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] Please see Figure 1-4 This embodiment provides a resettable trigger-type multi-cylinder puncture mechanism, which includes a cavity 1, a puncture needle 7 facing the needle receiving part of the gas cylinder, an elastic element disposed in the cavity 1, preferably a first spring 10, which is in a compressed energy storage state when the gas cylinder does not need to be punctured; and a trigger structure for releasing the elastic potential energy of the elastic element. When the first spring 10 is released, the kinetic energy released by the first spring 10 acts on the puncture needle 7, causing the puncture needle 7 to move toward the gas cylinder and puncture it.

[0026] Specifically, it also includes a sliding member 6, which is disposed in the cavity 1 and slidably connected to the cavity 1. The axis of the cavity 1 is the same as the insertion direction of the needle 7. The sliding member 6 can reciprocate along the insertion direction of the needle 7. The needle 7 is fixedly disposed on the sliding member 6. The first spring 10 is disposed between the sliding member 6 and the bottom wall of the cavity 1. The kinetic energy released by the first spring 10 drives the sliding member 6 to move toward the gas cylinder, and the sliding member 6 drives the needle 7 to move toward the gas cylinder.

[0027] In order to keep the first spring 10 in a compressed state when it is not necessary to puncture the gas cylinder, a locking structure is also included. The locking structure is disposed between the slider 6 and the cavity 1. When the first spring 10 is in a compressed state, the locking structure locks the slider, so that the first spring 10 cannot be smoothly reset, thereby maintaining the compressed state of the first spring 10.

[0028] Furthermore, the aforementioned locking structure includes a buckle 61 disposed on the sliding member 6 and a slot 101 disposed on the cavity 1, such as... Figure 2-4As shown, the slot 101 penetrates the cavity wall of the cavity 1. When the operator adjusts the slider 6 to reset, the first spring 10 is in a compressed state, and the buckle 61 moves to the position corresponding to the slot 101. With the cooperation of the buckle 61 and the slot 101, the slider 6 is locked. The triggering structure can disengage the buckle 61 from the slot 101, thereby releasing the kinetic energy of the first spring 10.

[0029] Furthermore, as an embodiment of the triggering structure, the triggering structure includes a servo motor 2 and a linkage structure driven by the servo motor 2. When unlocking, under the rotational drive of the servo motor 2, one end of the linkage structure can extend from outside the cavity 1 into the slot 101 to contact the buckle 61 and push the buckle 61 out of the slot 101.

[0030] Furthermore, such as Figure 3-4 As shown, the above-mentioned linkage structure includes an elliptical linkage 3 set at the output end of the servo motor 2, a long linkage 5 with one end extending into the slot 101, and a short linkage 4 with one end hinged to the elliptical linkage 3 at an eccentric point and the other end hinged to the long linkage 5. When it is necessary to puncture the gas cylinder, the servo motor 2 drives the elliptical linkage 3 to rotate, and the elliptical linkage 3 pulls the long linkage 5 through the short linkage 4, so that the end of the long linkage 5 close to the slot 101 moves along a predetermined trajectory and extends into the slot 101, pushing the buckle 61 to disengage from the slot 101.

[0031] Furthermore, the long connecting rod 5 has a rotation axis. The long connecting rod 5 includes a first end and a second end, and the rotation axis is located between the first end and the second end. The short connecting rod 4 can drive the long connecting rod 5 to rotate, so that the first end and the second end of the long connecting rod 5 can move around the rotation axis.

[0032] Furthermore, the long connecting rod 5 is hinged to the cavity 1 by a pin. The long connecting rod 5 includes a first end and a second end. The pin is located between the first end and the second end. The short connecting rod 4 can drive the long connecting rod 5 to rotate, so that the first end and the second end of the long connecting rod 5 can move around the pin, thereby allowing the first end of the long connecting rod 5 to enter the slot 101.

[0033] It should be noted that the long connecting rod 5 is not limited to being hinged to the cavity 1 by a pin; the long connecting rod 5 can also be fixed to the cavity 1 by screws.

[0034] As another embodiment of the triggering structure (not shown in the figure), this embodiment can be referred to. Figure 2-4The buckle 61 and slot 101 shown in this embodiment have a triggering structure including an electromagnet disposed on the outer wall of the cavity 1 and a push rod slidably connected to the slot 101. The push rod includes a first end and a second end. The first end of the push rod extends from outside the cavity 1 into the slot 101, and the second end protrudes outside the cavity 1 and can be attracted by the electromagnet. A return spring 10 is disposed between the second end and the cavity 1. When the electromagnet is working, it can attract the second end of the push rod, causing the push rod to slide into the cavity 1 in the slot 101 and push the buckle 61 out of the slot 101. When the needle 7 needs to be reset, the electromagnet is controlled to no longer attract the second end of the push rod, and the push rod is reset under the action of the return spring 10.

[0035] The following is a detailed description of the technical solution of this invention.

[0036] This invention proposes a resettable trigger-type multi-cylinder puncture mechanism, which consists of a cylinder fixing device 8, a resettable puncture structure (cavity 1, sliding member 6, puncture needle 7, first spring 10, top block 11), a triggering structure (servo motor 2, elliptical connecting rod 3, short connecting rod 4, long connecting rod 5), and a locking structure (bucket 61, slot 101).

[0037] Four gas cylinders 9 are inserted into the gas cylinder fixing device 8, and the gas cylinder fixing device 8 makes the mouths of the four gas cylinders 9 face the four needles 7.

[0038] In the resettable puncture mechanism, there is a first spring 10 inside the cavity 1, which is in the reset state ( Figure 3 The first spring 10 is in a compressed energy storage state, and in the reset state ( Figure 3 The latches 61 on both sides of the sliding member 6 lock with the square grooves on both sides of the cavity 1. The sliding member 6 and the needle 7 are connected by screws 13. The servo motor 2 is connected to the elliptical connecting rod 3, the elliptical connecting rod 3 is connected to the short connecting rod 4, the short connecting rod 4 is connected to the long connecting rod 5, and the long connecting rod 5 is fixed by screws 12.

[0039] In the reset state ( Figure 3 Servo 2 can drive the elliptical link 3 to rotate to the horizontal. The elliptical link 3 pushes the short link 4, and the short link 4 pushes the long link 5 to rotate around the screw 12. The end of the long link 5 pushes the latch 61 of the sliding member 6 into the cavity 1 to release the latch 61 from locking, thus changing to the puncture state. Figure 4 ).

[0040] In the punctured state ( Figure 4 When the end of the long connecting rod 12 pushes the latch 61 of the sliding member 6 to release the lock, the elastic potential energy stored in the spring 10 will be released. The spring 10 pushes the sliding member 6 upward through the top block 11, and the needle 7 moves upward through the fixedly connected sliding member 6 to puncture the gas cylinder 9.

[0041] After puncturing the gas cylinder 9 to complete the venting process, the gas cylinder 9 can be replaced, the servo motor 2 can be reset, and the reset button on the top of the slider 6 can be pressed down until the latch 61 of the slider 6 and the cavity 1 are locked again, thus completing the reset and triggering the next time.

[0042] By designing a contact-type trigger structure, this mechanism uses the trigger structure to release the lock of latch 61 and then utilizes the elastic potential energy stored in the first spring 10 to activate the gas cylinder 9. Compared with the traditional micro-motor direct triggering method, this design avoids dependence on servo motor torque, thereby reducing the need for high-performance servos. This design not only simplifies the activation mechanism but also significantly reduces the overall cost of the system while maintaining the reliability of the triggering process. The design of the cavity slot 101 and the sliding latch 61 enables the mechanism to be locked and reusable. After latch 61 is released, pressing the top of the sliding member 6 can re-lock it, preparing it for the next trigger. This design replaces disposable chemical explosion triggering devices, not only reducing environmental pollution but also significantly reducing maintenance and replacement costs during long-term use, improving economy and sustainability. The integrated design of the sliding member 6 and the four piercing needles 7 allows for the simultaneous piercing of all four gas cylinders 9 when releasing elastic potential energy, which significantly improves the gas discharge efficiency of the gas cylinders 9. Compared to traditional mechanisms that can only puncture one or two gas cylinders 9, the design of this invention meets the need for rapid and large-volume gas supply in comprehensive fall protection, improving the reaction speed and safety of protective equipment.

[0043] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A resettable, trigger-activated multi-cylinder puncture mechanism, characterized in that, It includes a needle facing the needle-receiving part of the gas cylinder, a sliding member that can reciprocate along the needle insertion direction, an elastic element that acts on the sliding member to provide kinetic energy for the needle to puncture the gas cylinder, a locking structure for locking the sliding member so that the elastic element is kept in a compressed state, and a triggering structure for unlocking the sliding member. When unlocked, under the action of the elastic potential energy of the elastic element, the sliding member moves toward the gas cylinder, pushing the needle to move and puncture the gas cylinder. It also includes a cavity, a sliding member that is slidably connected to the cavity and can slide along the axis of the cavity, the axis of the cavity is the same as the direction of needle insertion, and a locking structure is provided between the sliding member and the cavity; The locking structure includes a buckle on the sliding member and a slot on the cavity. The slot penetrates the cavity wall and locks the sliding member by cooperating with the buckle and the slot. The triggering structure can disengage the buckle from the slot. The triggering structure includes a servo motor and a linkage structure driven by the servo motor. When unlocking, under the rotational drive of the servo motor, one end of the linkage structure can extend from outside the cavity into the slot and contact the latch, pushing the latch out of the slot. The linkage structure includes an elliptical linkage located at the output end of the servo motor, a long linkage with one end extending into a slot, and a short linkage with one end hinged to the elliptical linkage at an eccentric point and the other end hinged to the long linkage. The servo motor drives the elliptical linkage to rotate, and the elliptical linkage drives the long linkage to move through the short linkage, so that the end of the long linkage near the slot moves along a predetermined trajectory and extends into the slot. The long connecting rod has a rotation axis and includes a first end and a second end. The rotation axis is located between the first end and the second end. The short connecting rod can drive the long connecting rod to rotate, so that the first end and the second end of the long connecting rod can move around the rotation axis. It also includes a cylinder fixing device, into which the cylinder can be inserted, and the cylinder fixing device aligns the cylinder opening with the needle.

2. The resettable trigger-type multi-cylinder puncture mechanism according to claim 1, characterized in that, The triggering structure also includes an electromagnet disposed on the outer wall of the cavity and a push rod slidably connected to the slot. The push rod includes a first end and a second end. The first end of the push rod extends from outside the cavity into the slot, and the second end protrudes outside the cavity and can be attracted by the electromagnet. A reset spring is disposed between the second end and the cavity. When the electromagnet is working, it can attract the second end of the push rod, causing the push rod to slide into the cavity in the slot.

3. The resettable trigger-type multi-cylinder puncture mechanism according to claim 1, characterized in that, The elastic element is the first spring.

4. The resettable trigger-type multi-cylinder puncture mechanism according to claim 1, characterized in that, The needle is fixedly mounted on the sliding component.

Images