A gas-driven vehicle window breaking device
By designing an air-driven window breaker device, using gas-driven crash rod to destroy the window glass, the problem of unsafe use of window breaker devices in the prior art is solved. It is especially suitable for drivers with weaker strength, and an efficient and safe window breaking effect is achieved.
Patent Information
- Application Number
- CN202411972890.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-01
AI Technical Summary
Existing window breaking devices have safety risks when used, especially for drivers with weaker strength, such as women and the elderly, it is difficult to effectively destroy the hard plexiglass windows in modern cars.
A gas-driven window-breaking device is designed to generate a large amount of gas inside the battery power control device, and the gas-driven crash rod is used to destroy a certain point of the window glass, resulting in overall breakage. The device includes a housing, a top cover, a breaker, a pusher, a valve body and a snap ring. Through the multi-layer structure and the design of the powder cavity, it ensures safe operation and is suitable for users with weaker strength.
It realizes efficient destruction of car window glass without violent and forcibly destroying it, reducing the difficulty of operation and safety risks of users, and is suitable for people with weaker strength such as women and elderly drivers.
Smart Images
Figure CN119733183A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of automobile safety equipment, and in particular relates to a gas-driven window breaking device. Background Art
[0002] The window glass of a family car needs to be sealed to a certain extent when closed due to performance requirements such as protection and heat preservation. However, precisely because of its strength and sealing, when an accident occurs and people urgently need to leave the car, the window glass becomes the biggest obstacle to escape.
[0003] In this regard, there are many small and portable window breaking tools such as window breaking hammers, spring window breaking devices, and pneumatic window breaking devices on the market. Due to the limited elastic force of the spring, the most effective window breaking device is still the window breaking hammer, but the window breaking hammer uses violence to forcibly destroy the glass. For female drivers and elderly drivers, especially the large number of mothers and children driving alone, it is still very difficult for such people to use the window breaking hammer. Although the existing pneumatic window breaking device is labor-saving, the core problem still lies in the safety during use. Usually, powder is used to instantly generate a large amount of gas. If used improperly, it is easy to hurt yourself.
[0004] Considering that most of the car window glass nowadays is made of hard and difficult-to-break organic glass, if a certain point of the window glass is broken, the entire window glass will easily shatter. Based on this characteristic, the purpose of the present invention is to design a window breaking device that is easy to operate and safe for drivers with weaker strength. Summary of the invention
[0005] Based on the above content, the present invention provides a gas-driven window breaking device, which generates a large amount of gas inside the power control device of the battery when in use, and uses the impact rod of the gas-driven window breaking device to destroy a certain point of the window glass, thereby causing the window glass to be shattered as a whole. The operation is labor-saving and suitable for people with weaker strength such as female drivers and elderly drivers.
[0006] The technical solution adopted by the present invention is as follows: a gas-driven vehicle window breaking device, comprising an outer shell, a top cover, a breaking piece, a pushing piece, a valve body and a clamping ring, wherein the outer shell and the top cover constitute a main body contour structure, and an internal space for accommodating other parts is formed inside the two; the breaking piece is installed in the internal space of the outer shell, and can be driven to pass through the breaking hole at the bottom of the outer shell and impact on the glass to play a window breaking effect, and a plurality of first springs are arranged between the breaking piece and the inner bottom surface of the outer shell, and the first spring is used to support the breaking piece so that a certain distance is spaced between the breaking piece and the inner bottom surface of the outer shell, and the certain distance is the impact distance during the window breaking effect; a pushing piece is arranged on the outer side of the breaking piece, and a second spring is arranged between the pushing piece and the breaking piece, and the supporting effect of the second spring makes the breaking piece and the pushing piece spaced by a preset distance, and the preset distance forms a second powder cavity inside the outer shell, and the second powder cavity contains a powder bag inside, and the powder bag instantly generates a large amount of gas when impacted to push the breaking piece to break sharply The outer surface of the vehicle window glass is violently hit; a limit snap ring is also installed inside the shell, and the limit snap ring is used to limit the push member from moving toward the outside of the shell; a first powder chamber is formed between the limit snap ring and the push member, and a gas generating agent is installed in the first powder chamber, and the gas generating agent can generate a large amount of gas under the current drive of the trigger to push the push member to hit the powder bag; a valve body is arranged outside the limit snap ring and the push member, and the outer peripheral surface of the valve body is threadedly connected with the inner surface of the shell, and the lower surface of the valve body abuts against the push member to lock the moving range of the push member, and one or more triggers are arranged inside the valve body, and the trigger is used to trigger the gas generating agent to generate a large amount of gas; the outer surface of the valve body abuts against the top cover, and a control chamber is also formed between the valve body and the top cover, a battery and a control circuit are installed inside the control chamber, and the trigger is electrically connected to the control circuit, and a control button is arranged inside the control chamber, and the pressing part of the control button extends to the outside of the top cover.
[0007] A accommodating cavity is formed inside the shell, and the breaking piece, pushing piece, limiting clamp ring and valve body are all arranged inside the accommodating cavity. A breaking hole penetrating the wall of the shell is formed at the bottom of the accommodating cavity, and an annular clamping groove is arranged on the inner circumferential surface of the accommodating cavity, and the annular clamping groove is used to accommodate the limiting clamp ring; a plurality of screw holes are also arranged on the end face of the opening of the accommodating cavity of the shell.
[0008] The breaking piece includes a force-bearing part and a top cone, wherein the top cone is formed with a conical tip, which can be pushed through the breaking hole of the shell to hit the glass surface, and the force-bearing part is formed as a piston body matched with the cross-sectional shape of the accommodating cavity of the shell, and is used to withstand the gas pressure to drive the top cone to move; the force-bearing part is provided with a plurality of first spring positioning holes on the end surface facing the inner bottom surface of the accommodating cavity, and the first spring positioning holes are used to accommodate the end of the first spring to fix the position of the first spring, and accommodate the first spring when the breaking piece moves and compresses the first spring, so as to reduce the interference of the first spring on the impact movement of the breaking piece; the force-bearing part is provided with a second spring positioning hole on the end surface away from the inner bottom surface of the accommodating cavity, and the second spring positioning hole is used to accommodate one end of the second spring. The inner bottom surface of the accommodating cavity is provided with a first spring accommodating hole for accommodating the other end surface of the first spring.
[0009] The pusher comprises a limiting part and a pushing part which are stacked and fixed together. The pushing part is formed as a piston body which matches the cross-sectional shape of the accommodating cavity of the shell. The outer diameter of the limiting part is smaller than the outer diameter of the pushing part. When the limiting clamp ring is installed inside the annular clamping groove, the lower end face of the limiting clamp ring cooperates with the upper end face of the pushing part to limit the range of motion of the pushing part. An annular first powder cavity is formed between the inner circumference of the limiting clamp ring and the outer circumference of the limiting part. A second spring accommodating hole is also provided on the lower end face of the pushing part. The second spring accommodating hole is used to accommodate and position the other end of the second spring. When the pushing part is driven by gas to impact the powder bag inside the second powder cavity, the second spring is compressed and shrinks to the inside of the second spring accommodating hole and the second spring positioning hole, so that the lower end face of the pushing part can impact the upper surface of the breaking part without rigid hindrance.
[0010] The main body of the valve body is a sealing member whose cross-sectional shape matches the cross-sectional shape of the accommodating cavity. The valve body is provided with a trigger mounting hole penetrating the upper and lower surfaces of the valve body, which corresponds to the position of the first powder cavity. A trigger is installed inside the trigger mounting hole so that the current of the trigger can be applied to the gas generating agent inside the first powder cavity. The upper surface of the valve body is also provided with a mounting hole, and a thread is provided on the outer peripheral surface of the valve body. The mounting hole is used to accommodate a screwing tool to screw the valve body thread into the accommodating cavity of the outer shell.
[0011] A countersunk hole is provided on the end surface of the top cover adjacent to the outer shell, the countersunk hole forms a control cavity, and a button mounting hole is provided on the bottom surface of the countersunk hole to penetrate the top cover, the button mounting hole allows the pressing portion of the control button to extend to the outside of the top cover; the outer diameter of the countersunk hole is smaller than the outer diameter of the valve body, so that when the top cover and the outer shell are installed in cooperation, the top cover can directly limit the part of the valve body adjacent to the outer diameter to prevent the valve body from jumping out of the accommodating cavity of the outer shell; a plurality of screw through holes penetrating the top cover are also provided on the top cover, the screw through holes cooperate with the screw holes of the outer shell to fix the top cover and the outer shell together by screws.
[0012] The advantages of the present invention are: 1. The amount of gas generating agent in the first powder chamber is small, and its function is only to form the impact of the pusher. The gas production is small and the gas pressure is relatively low, which poses little threat to external users. In addition, the physical limit of the limit clamp, the threaded fixation of the valve body, and the physical limit of the valve body by the top cover lock the possibility of the pusher to escape outward. A larger amount of powder can be selected in the powder bag of the second powder chamber to generate enough impact force to break the car window glass. In addition, it is more difficult for the gas in the second powder chamber to be released to the outside of the window breaking device, and the overall safety is higher. 2. Through the setting of the first medicine powder chamber and the second medicine powder chamber, when in use, the gas pressure in the second medicine powder chamber will form a reaction force toward the user, and the existence of the gas pressure in the first medicine powder chamber plays an energy absorption and vibration reduction role to reduce the pressing force that the user needs to provide. It is suitable for people with weaker strength such as female drivers and elderly drivers. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the window breaking device of the present invention; Figure 2 It is a schematic diagram of the disassembled structure of the window breaking device of the present invention; Figure 3 2 is a schematic diagram of the cross-sectional structure of the window breaking device of the present invention; Figure 4 It is a schematic diagram of the shell structure of the window breaking device of the present invention; Figure 5 1 is a schematic diagram of the structure of the breaking member of the window breaking device of the present invention, wherein (a) is a side view of the breaking member, and (b) is a back view of the breaking member; Figure 6 2. It is a schematic diagram of the structure of the pusher of the window breaking device of the present invention; Figure 7 2. It is a schematic diagram of the structure of the valve body of the window breaking device of the present invention; Figure 8 It is a schematic diagram of the top cover structure of the window breaking device of the present invention; In the figure: 1, shell, 1-1, accommodating chamber, 1-2, annular groove, 1-3, breaking hole, 1-4, screw hole, 2, top cover, 2-1, countersunk hole, 2-2, button mounting hole, 2-3, screw through hole, 3, breaking piece, 3-1, load-bearing part, 3-2, top cone, 3-3, first spring positioning hole, 3-4, second spring positioning hole, 4, pushing piece, 4-1, limiting part, 4-2, pushing part, 4-3, second spring accommodating hole, 5, valve body part, 5-1, mounting hole, 5-2, trigger mounting hole, 6, limiting snap ring, 7, first spring, 8, second spring, 9, control chamber, 10, first powder chamber, 11, second powder chamber, 12, control button. DETAILED DESCRIPTION
[0014] The present invention is further described in detail below with reference to the accompanying drawings.
[0015] The following is a specific embodiment to illustrate the implementation method of the present invention. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0016] With reference to the drawings, the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any structural modification, change in proportional relationship, or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the position limiting terms quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship, without substantially changing the technical contents, should also be regarded as the scope of the implementation of the present invention.
[0017] Figure 1 1 is a schematic diagram of the overall structure of the window breaking device of the present invention, Figure 2 Schematic diagram of the disassembled structure of the window breaking device of the present invention; as shown in the figure, the gas-driven window breaking device of the present invention is a cube-like structure similar to a magic cube when assembled, so as to facilitate storage, and mainly includes a shell 1, a top cover 2, a breaking member 3, a push member 4, a valve body member 5 and a clamping ring 6, wherein the shell 1 and the top cover 2 constitute a main body contour structure, and the interior of the two forms an internal space for accommodating other parts; specifically, Figure 3 As shown, Figure 31 is a schematic diagram of the cross-sectional structure of the window breaking device of the present invention, wherein the breaking member 3 is installed in the internal space of the shell 1, and can be driven to pass through the breaking hole at the bottom of the shell 1 and impact on the glass to play a window breaking effect, and a plurality of first springs 7 are arranged between the breaking member 3 and the inner bottom surface of the shell 1, and the first spring 7 is used to support the breaking member 3 so that a certain distance is spaced between the breaking member 3 and the inner bottom surface of the shell 1, and the certain distance is the impact distance during the window breaking effect; a pushing member 4 is arranged on the outer side of the breaking member 3, and a second spring 8 is arranged between the pushing member 4 and the breaking member 3, and the supporting effect of the second spring 8 makes a preset distance between the breaking member 3 and the pushing member 4, and the preset distance makes a second powder chamber 11 formed inside the shell 1, and the second powder chamber 11 contains a powder bag, and the powder bag instantly generates a large amount of gas when impacted to push the breaking member 3 to violently impact the surface of the vehicle window glass; a limiting clamp ring 6 is also arranged inside the shell 1, and the limiting clamp ring 6 is used to limit The push member 4 is prevented from moving toward the outside of the shell 1. A first powder chamber 10 is further formed between the limit clamp ring 6 and the push member 4. A gas generating agent is installed in the first powder chamber 10. The gas generating agent can generate a large amount of gas under the current drive of the trigger to push the push member 4 to hit the powder bag; a valve body 5 is arranged on the outside of the limit clamp ring 6 and the push member 4. The outer peripheral surface of the valve body 5 is threadedly connected to the inner surface of the shell 1. The inner surface of the valve body 5 abuts against the push member 4 to lock the moving range of the push member 4. One or more triggers are arranged inside the valve body 5. The trigger is used to trigger the gas generating agent to generate a large amount of gas; the outer surface of the valve body 5 abuts against the top cover 2, and a control chamber 9 is further formed between the valve body 5 and the top cover 2. A battery and a control circuit are installed inside the control chamber 9. The trigger is electrically connected to the control circuit. A control button 12 is arranged inside the control chamber 9, and the pressing part of the control button 12 extends to the outside of the top cover 2.
[0018] Figure 4 It is a schematic diagram of the shell structure of the window breaking device of the present invention, wherein an accommodating chamber 1-1 is formed inside the shell 1, and the breaking member 3, the pushing member 4, the limiting clamp ring 6 and the valve body member 5 are all arranged inside the accommodating chamber 1-1, and a breaking hole 1-3 penetrating the wall of the shell 1 is formed at the bottom of the accommodating chamber 1-1, and an annular clamping groove 1-2 is arranged on the inner circumferential surface of the accommodating chamber 1-1, and the annular clamping groove 1-2 is used to accommodate the limiting clamp ring 6; a plurality of screw holes 1-4 are also arranged on the end face of the opening of the accommodating chamber 1-1 of the shell 1.
[0019] Figure 51 is a schematic diagram of the structure of the breaking piece of the window breaking device of the present invention, wherein (a) is a side view of the breaking piece, and (b) is a back view of the breaking piece. As shown in the figure, the breaking piece 3 includes a load-bearing portion 3-1 and a top cone 3-2, wherein the top cone 3-2 is formed with a conical tip, which can be pushed through the breaking hole 1-3 of the shell 1 to impact on the glass surface, and the load-bearing portion 3-1 is formed as a piston body that matches the cross-sectional shape of the accommodating cavity 1-1 of the shell 1, and is used to withstand gas pressure to drive the top cone 3-2 to move; a plurality of first spring positioning holes 3-3 are provided on the end surface of the load-bearing portion 3-1 facing the inner bottom surface of the accommodating cavity 1-1, and the first spring positioning holes 3-3 are used to accommodate the end of the first spring 7 to fix the position of the first spring 7, and to accommodate the first spring 7 when the breaking piece 3 moves to compress the first spring 7, thereby reducing the interference of the first spring 7 with the impact movement of the breaking piece 3; Figure 5 As shown in (b), a second spring positioning hole 3-4 is opened on the end surface of the load-bearing part 3-1 away from the inner bottom surface of the accommodating cavity 1-1, and the second spring positioning hole 3-4 is used to accommodate one end of the second spring 8.
[0020] A first spring accommodating hole for accommodating the other end surface of the first spring 7 is provided on the inner bottom surface of the accommodating cavity 1 - 1 .
[0021] Figure 6 It is a schematic diagram of the structure of the pushing member of the window breaking device of the present invention. As shown in the figure, the pushing member 4 includes a limiting portion 4-1 and a pushing portion 4-2 which are stacked and fixed together. The pushing portion 4-2 is formed as a piston body that matches the cross-sectional shape of the accommodating cavity 1-1 of the shell 1. The outer diameter of the limiting portion 4-1 is smaller than the outer diameter of the pushing portion 4-2. When the limiting snap ring 6 is installed in the annular groove 1-2, the lower end surface of the limiting snap ring 6 cooperates with the upper end surface of the pushing portion 4-2 to limit the range of movement of the pushing portion 4-2. An annular first powder cavity 10 is formed between the inner circumferential surface of the limiting snap ring 6 and the outer circumferential surface of the limiting portion 4-1; a second spring accommodating hole 4-3 is also provided on the lower end surface of the pushing portion 4-2, and the second spring accommodating hole 4-3 is used to accommodate and position the other end of the second spring 8. When the pushing member 4 is driven by gas to hit the powder bag inside the second powder chamber 11, the second spring 8 is compressed and shrinks to the inside of the second spring accommodating hole 4-3 and the second spring positioning hole 3-4, so that the lower end surface of the pushing member 4 can hit the upper surface of the breaking member 3 without being hindered by rigidity.
[0022] Figure 7It is a schematic diagram of the valve body structure of the window breaking device of the present invention, the main body of the valve body 5 is a sealing member whose cross-sectional shape matches the cross-sectional shape of the accommodating chamber 1-1, and the valve body 5 is provided with a trigger mounting hole 5-2 that penetrates the upper and lower surfaces of the valve body 5, which corresponds to the position of the first powder chamber 10, and a trigger is installed inside the trigger mounting hole 5-2 so that the current of the trigger can be applied to the gas generating agent inside the first powder chamber 10; the upper surface of the valve body 5 is also provided with a mounting hole 5-1, and a thread is arranged on the outer peripheral surface of the valve body 5, and the mounting hole 5-1 is used to accommodate a screwing tool to screw the valve body 5 into the accommodating chamber 1-1 of the outer shell 1.
[0023] Figure 8 1 is a schematic diagram of the top cover structure of the window breaking device of the present invention. As shown in the figure, a countersunk hole 2-1 is opened on the end surface of the top cover 2 adjacent to the outer shell 1, and the countersunk hole 2-1 forms a control cavity 9. A button mounting hole 2-2 penetrating the top cover 2 is arranged on the bottom surface of the countersunk hole 2-1, and the button mounting hole 2-2 is used for the pressing part of the control button 12 to extend to the outside of the top cover 2; the outer diameter of the countersunk hole 2-1 is smaller than the outer diameter of the valve body 5, so that when the top cover 2 and the outer shell 1 are installed in cooperation, the top cover 2 can directly limit the part of the valve body 5 adjacent to the outer diameter to prevent the valve body 5 from jumping out of the accommodating cavity 1-1 of the outer shell 1; a plurality of screw through holes 2-3 penetrating the top cover 2 are also arranged on the top cover 2, and the screw through holes 2-3 cooperate with the screw holes 1-4 of the outer shell 1 to fix the top cover 2 and the outer shell 1 together by screws.
[0024] Combination Figure 1-8 The working principle of the gas-driven window breaking device of the present invention is explained as follows: a button battery and a control circuit are installed inside the control chamber 9, a control button 12 controls the on and off of the control circuit, and a trigger is electrically connected to the control circuit. When in use, the control button 12 is pressed, the trigger is energized, and the current triggers the gas generating agent inside the first powder chamber 10 to generate gas, and the gas drives the pusher 4 to hit the powder bag inside the second powder chamber 11, and the powder bag contains NaN 3 or NaN 3 , Fe 2 O 3 、NaHCO 3 When the pushing member 4 impacts the powder bag, a large amount of gas is generated, and the gas pushes the breaking member 4 to overcome the supporting force of the first spring 7 and instantly impact the window glass, thereby producing a window-breaking effect.
[0025] Although the specific implementation modes of the present invention are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the present invention. Those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or deformations of equivalent structures or equivalent processes that can be made by those skilled in the art without creative work, or directly or indirectly applied to other related technical fields, are still within the scope of protection of the present invention.
Claims
1. A gas-driven vehicle window breaking device, characterized in that: It mainly includes an outer shell, a top cover, a breaking piece, a pushing piece, a valve body and a clamping ring. The outer shell and the top cover constitute the main body contour structure, and the inner space of the two is formed to accommodate other parts; the breaking piece is installed in the inner space of the outer shell, and can be driven to pass through the breaking hole at the bottom of the outer shell and hit the glass to play a window-breaking role. A plurality of first springs are arranged between the breaking piece and the inner bottom surface of the outer shell, and the first spring is used to support the breaking piece so that a certain distance is between the breaking piece and the inner bottom surface of the outer shell; a pushing piece is arranged on the outer side of the breaking piece, and a second spring is arranged between the pushing piece and the breaking piece. The supporting effect of the second spring makes the breaking piece and the pushing piece be spaced by a preset distance, and the preset distance forms a second powder cavity inside the outer shell, and the powder bag is accommodated inside the second powder cavity; a limiting clamping ring is also installed inside the outer shell, and the The limiting clamp ring is used to limit the movement of the pushing member toward the outside of the shell, and a first powder chamber is also formed between the limiting clamp ring and the pushing member, and a gas generating agent is installed in the first powder chamber; a valve body is provided on the outside of the limiting clamp ring and the pushing member, and the outer peripheral surface of the valve body is threadedly connected to the inner surface of the internal space of the shell, and the lower surface of the valve body abuts against the pushing member to lock the moving range of the pushing member, and one or more triggers are provided inside the valve body, and the trigger is used to trigger the gas generating agent to generate gas; the upper surface of the valve body abuts against the top cover, and a control chamber is also formed between the valve body and the top cover, a battery and a control circuit are installed inside the control chamber, the trigger is electrically connected to the control circuit, and a control button is provided inside the control chamber, and the control button controls the on and off of the control circuit, and the pressing part of the control button extends to the outside of the top cover.
2. The window breaking device according to claim 1, further characterized in that: A accommodating cavity is formed inside the shell, and the breaking piece, pushing piece, limiting clamp ring and valve body are all arranged inside the accommodating cavity. A breaking hole penetrating the wall of the shell is formed at the bottom of the accommodating cavity, and an annular clamping groove is arranged on the inner circumferential surface of the accommodating cavity, and the annular clamping groove is used to accommodate the limiting clamp ring; a plurality of screw holes are also arranged on the end face of the opening of the accommodating cavity of the shell.
3. The window breaking device according to claim 2, further characterized in that: The breaking piece includes a load-bearing part and a top cone, wherein the top cone is formed with a conical tip which can be pushed through the breaking hole of the outer shell; the load-bearing part is formed as a piston body which matches the cross-sectional shape of the accommodating cavity of the outer shell, and is used to withstand the gas pressure to drive the top cone to move; a plurality of first spring positioning holes are provided on the end surface of the load-bearing part facing the inner bottom surface of the accommodating cavity; a second spring positioning hole is provided on the end surface of the load-bearing part which is away from the inner bottom surface of the accommodating cavity.
4. The window breaking device according to claim 3 is further characterized in that: A first spring accommodating hole corresponding to the first spring positioning hole is arranged on the inner bottom surface of the accommodating cavity.
5. The window breaking device according to claim 3, further characterized in that: The pushing member includes a limiting portion and a pushing portion which are stacked and fixed together. The pushing portion is formed as a piston body that matches the cross-sectional shape of the accommodating cavity of the shell. The outer diameter of the limiting portion is smaller than the outer diameter of the pushing portion. When the limiting clamp ring is installed in the annular groove, the lower end surface of the limiting clamp ring cooperates with the upper end surface of the pushing portion to limit the range of movement of the pushing portion. A first annular powder cavity is formed between the inner circumferential surface of the limiting clamp ring and the outer circumferential surface of the limiting portion. A second spring accommodating hole is also provided on the lower end surface of the pushing portion.
6. The window breaking device according to claim 5, further characterized in that: The valve body is a sealing member whose cross-sectional shape matches that of the accommodating cavity. The valve body is provided with a trigger mounting hole penetrating the upper and lower surfaces of the valve body, which corresponds to the position of the first powder cavity, and a trigger is mounted inside the trigger mounting hole.
7. The window breaking device according to claim 6, further characterized in that: A countersunk hole is provided on the end surface of the top cover adjacent to the shell, the countersunk hole forms a control cavity, and a button mounting hole penetrating the top cover is provided on the bottom surface of the countersunk hole, the button mounting hole allows the pressing portion of the control button to extend to the outside of the top cover.
8. The window breaking device according to claim 6, further characterized in that: The outer diameter of the counterbore is smaller than the outer diameter of the valve body.
9. The window breaking device according to any one of claims 6 to 8, further characterized in that: The upper surface of the valve body is also provided with a mounting hole, and a thread is arranged on the outer peripheral surface of the valve body. The mounting hole is used to accommodate a screwing tool.
10. The window breaking device according to claim 7, further characterized in that: The top cover is also provided with a plurality of screw through holes penetrating the top cover, and the screw through holes cooperate with the screw holes of the outer shell so as to fix the top cover and the outer shell together by screws.