Window breaking device
By designing a window breaking device that includes an outer tube, a spring, a locking mechanism, a hammer, and a striking head, the device utilizes the spring's potential energy to drive the hammer to strike the striking head, thus solving the problems of insufficient destructive power and inconvenient operation of traditional window breaking devices, and achieving rapid destruction of reinforced or multi-layered glass.
Patent Information
- Application Number
- CN202422788889.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Traditional window breaking devices are insufficient in their destructive power and inconvenient to operate when faced with tempered or multi-layered glass, making it difficult to effectively break windows in a short period of time.
A window-breaking device was designed, comprising an outer tube, a spring, a locking mechanism, a hammer, and a striking head. The locking mechanism releases the spring's potential energy to drive the hammer to strike the striking head, providing tremendous explosive force and impact.
It improves the destructive power of window breaking devices, simplifies the operation process, and ensures that windows can be broken quickly and effectively when faced with reinforced or multi-layered glass.
Smart Images

Figure CN223746859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to life-saving tool technology, and more particularly to a window-breaking device. Background Technology
[0002] In the field of emergency escape and rescue, window breaking devices are a crucial tool, and their performance directly affects escape speed and rescue efficiency. Traditional window breaking device designs often rely on a combination of springs and firing pins, with the energy released by the springs propelling the firing pin to penetrate the window. However, as the requirements for window breaking efficiency and safety continue to increase, this traditional design has gradually revealed some limitations.
[0003] Traditional window breaking devices often fail to cause sufficient damage to tempered or multi-layered glass in a short time. Furthermore, they may require considerable force and precise operation to be effective, increasing the difficulty for users. Therefore, the traditional design of window breaking devices suffers from insufficient destructive power and inconvenience in operation. Utility Model Content
[0004] In view of the above-mentioned defects, the purpose of this utility model is to propose a window breaking device that solves the problems of insufficient destructive power and inconvenient operation of traditional window breaking devices.
[0005] To achieve this objective, the present invention adopts the following technical solution: a window-breaking device, comprising: an outer tube, a spring, a locking mechanism, a hammer, and a striking head, wherein:
[0006] The outer tube is a hollow tube, and the striking head, striking hammer and spring are arranged sequentially inside the outer tube. The striking head is located at the outlet end of the outer tube, the spring is located at the end of the outer tube, and the locking mechanism is located on the outer tube and between the striking hammer and the striking head.
[0007] When the window is not being broken, the locking mechanism locks the hammer and compresses the spring inside the outer tube. When the window is being broken, the locking mechanism releases the hammer, causing the spring to impact the hammer and thus drive the hammer to strike the striking head.
[0008] Furthermore, the window-breaking device also includes a trigger sleeve, which is slidably sleeved on the front end of the outer tube;
[0009] The trigger sleeve includes a trigger part located on the side of the trigger sleeve near the locking mechanism. The trigger part has a protruding structure at one end of the trigger sleeve, which can abut against the locking mechanism, thereby enabling the unlocking process of the locking mechanism to be completed.
[0010] Further, the locking mechanism comprises a hammer locking hook and a locking hook mounting seat fixed on the outer wall of the outer tube;
[0011] One end of the hammer locking hook is hinged to the locking hook mounting seat, and the other end of the hammer locking hook is provided with an unlocking portion and a locking portion;
[0012] The outer tube comprises a first through hole located between the hammer and the striking head;
[0013] The unlocking portion is used to abut against the trigger portion to complete window breaking unlocking, and the locking portion is used to pass through the first through hole on the outer tube and clamp the hammer in the outer tube;
[0014] When the hammer is clamped by the hammer locking hook, the spring is compressed in the outer tube.
[0015] Further, the unlocking portion is a cam structure, the curvature radius of the cam gradually increases from the front section to the rear section, and the locking portion is a barb structure.
[0016] Further, a front tip is arranged in the outer tube, the front tip is fixedly installed on the outlet end of the outer tube, the front tip has a second through hole, and the second through hole is used to limit the movement direction of the striking head in the outer tube.
[0017] Further, the striking head comprises a striker and a needle head, the needle head is fixed on the striker, and the striker is slidingly arranged on the second through hole;
[0018] When the window breaking device is in a standby state, the needle head exceeds the outlet end of the outer tube and does not exceed the outlet end of the trigger sleeve; when the window breaking device is in an activated state, the trigger sleeve moves towards the outer tube, and the needle head exceeds the outlet end of the trigger sleeve.
[0019] Further, the striker comprises a first column and a second column, one end of the first column is fixed with the needle head, the other end of the first column is fixed with the second column, the first column is sleeved on the second through hole, and the cylindrical surface area of the second column is greater than the cylindrical surface area of the second through hole.
[0020] Further, the tail tip is arranged at the end of the outer tube, and when the locking mechanism locks the hammer to compress the spring in the outer tube, the spring abuts against the tail tip.
[0021] Further, a third through hole is arranged on the tail tip, a pull rope is arranged on the hammer, the spring is sleeved on the pull rope, and the pull rope passes through the third through hole.
[0022] Further, a clamping groove is arranged on the end face of the hammer, and the spring is clamped on the clamping groove.
[0023] The technical scheme provided by the utility model can have the following beneficial effects: the potential energy of the compression spring is released by unlocking the locking mechanism, and the spring drives the hammer to accelerate and move to the opening end and hit the hitting head, the hitting head hits the target glass, the hitting head obtains great explosive force and impact force because the hammer hits the hitting head after obtaining enough kinetic energy in the outer tube, and the problems of insufficient destructive force and inconvenient operation of the traditional window breaking device are solved. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0025] Figure 1 It is the sectional view of the to-be-activated state of the window breaking device in the utility model;
[0026] Figure 2 It is the sectional view of the activated state of the window breaking device in the utility model;
[0027] Figure 3 It is Figure 2 The local enlarged view of the A area in the utility model;
[0028] Figure 4 It is the explosion view of the front top of the window breaking device in the utility model;
[0029] Figure 5 It is the explosion view of the tail top of the window breaking device in the utility model;
[0030] Figure 6 It is the sectional view of the to-be-activated state of the window breaking device in the utility model;
[0031] Figure 7 It is the sectional view of the activated state of the window breaking device in the utility model;
[0032] Figure 8 It is the sectional view of the to-be-activated state of the window breaking device in the utility model;
[0033] Figure 9 It is the sectional view of the activated state of the window breaking device in the utility model;
[0034] Figure 10 It is the structural schematic view of the locking mechanism of the window breaking device in the utility model;
[0035] Figure 11 is the sectional view of the window breaking device in the activated state of the utility model;
[0036] Figure 12 is the sectional view of the window breaking device in the activated state of the utility model.
[0037] Wherein: outer tube 1, first through hole 11, front top 12, second through hole 13, spring 2, locking mechanism 3, hammer locking hook 31, unlocking part 311, locking part 312, connecting hole 313, locking hook mounting seat 32, first body 331, first locking part 332, first support seat 333, first trigger part 334, sliding rail 335, anti-mis-triggering part 336, second body 341, inner ring 3411, outer ring 3412, second locking part 342, second support seat 343, second trigger part 344, third body 345, third locking part 346, third trigger part 347, hammer 4, clamping groove 41, hammer head 5, firing pin 51, first cylinder 52, second cylinder 53, needle 54, trigger sleeve 6, trigger part 61, tail top 7, third through hole 71, pull rope 8. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0039] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the features limited as "first", "second" can explicitly or implicitly include one or more features, which are used to distinguish the described features, and there is no order or difference.
[0040] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.
[0041] The utility model discloses a window breaking device, including outer tube 1, spring 2, locking mechanism 3, hit hammer 4 and hit head 5, wherein: Figures 1-12 And through specific embodiment to further explain the technical scheme of the utility model.
[0042] One preferred embodiment in the application, the window breaking device of the utility model embodiment includes: outer tube 1, spring 2, locking mechanism 3, hit hammer 4 and hit head 5, wherein:
[0043] The outer tube 1 is hollow pipe, the hit head 5, hit hammer 4 and spring 2 are sequentially arranged in the outer tube 1, the hit head 5 is located at the outlet end of the outer tube 1, the spring 2 is located at the end of the outer tube 1, the locking mechanism 3 is located on the outer tube 1 and is arranged between the hit hammer 4 and the hit head 5;
[0044] When not breaking window, the locking mechanism 3 locks the hit hammer 4 and compresses the spring 2 in the outer tube 1, when breaking window, the locking mechanism 3 releases the hit hammer 4 so that spring 2 impacts the hit hammer 4 to drive the hit hammer 4 to hit the hit head 5.
[0045] Specifically, when the window breaking device is in the state of waiting to be activated, the spring 2 and the hit hammer 4 are both at the end of the outer tube 1, the spring 2 is in the compressed state, and the locking mechanism 3 locks the hit hammer 4. When the window breaking device is activated, the locking mechanism 3 is unlocked and releases the hit hammer 4, the spring 2 drives the hit hammer 4 to move towards the opening end and hit the hit head 5. The technical solution releases the potential energy of the spring 2 by unlocking the locking mechanism 3, and drives the hit hammer 4 to accelerate towards the opening end using the spring 2. The technical solution releases the potential energy of the spring 2 by unlocking the locking mechanism 3, and drives the hit hammer 4 to accelerate and move towards the opening and hit the hit head 5. The hit head 5 hits the target glass. Since the hit hammer 4 obtains sufficient kinetic energy before hitting the hit head 5, the hit head 5 obtains a huge explosive force and impact force, solving the problems of insufficient destructive force and inconvenient operation of traditional window breaking devices.
[0046] In an optional embodiment, the window breaking device further comprises a trigger sleeve 6, which is slidingly sleeved at the front end of the outer tube 1;
[0047] The trigger sleeve 6 comprises a trigger portion 61, which is arranged at the side of the trigger sleeve 6 close to the locking mechanism 3. The trigger portion 61 has a protruding structure at one end of the trigger sleeve 6, which can abut against the locking mechanism 3, so that the unlocking process of the locking mechanism 3 can be completed.
[0048] Specifically, the user can slide the trigger sleeve 6 towards the locking mechanism 3 during the operation, so that the locking mechanism 3 completes the unlocking of the hammer 4 and the window breaking device completes the window breaking process. This operation mode needs to be completed by both hands, which avoids the deviation or accidental touch caused by single-handed operation. Another trigger mode is to paste the trigger sleeve 6 on the target window, and the user pushes the outer tube 1 to trigger the window breaking device to complete the window breaking process.
[0049] In an optional embodiment, the locking mechanism 3 comprises a hammer locking hook 31 and a locking hook mounting seat 32, and the locking hook mounting seat 32 is fixed to the outer wall of the outer tube 1.
[0050] One end of the hammer locking hook 31 is hinged to the locking hook mounting seat 32, and the other end of the hammer locking hook 31 is provided with an unlocking portion 311 and a locking portion 312.
[0051] The outer tube 1 comprises a first through hole 11, which is located on the outer tube 1 and arranged between the hammer 4 and the hitting head 5.
[0052] The unlocking portion 311 is used to abut against the trigger portion 61 to complete the window breaking unlocking, and the locking portion 312 is used to pass through the first through hole 11 on the outer tube 1 and clamp the hammer 4 in the outer tube 1.
[0053] When the hammer 4 is clamped by the hammer locking hook 31, the spring 2 is compressed in the outer tube 1.
[0054] Specifically, the hammer 4 is clamped in the outer tube 1 by the locking portion 312 passing through the first through hole 11, which ensures that the hammer 4 will not move or release energy accidentally in the non-trigger state, thereby improving the safety and stability of the entire window breaking device. The locking hook mounting seat 32 is fixed to the outer wall of the outer tube 1, and one end of the hammer locking hook 31 is hinged to the locking hook mounting seat 32. This hinged design not only ensures the stability and reliability of the hammer locking hook 31, but also helps to realize the compactness of the entire device.
[0055] In an optional embodiment, the unlocking portion 311 is a cam structure, the curvature radius of the cam gradually increases from the front section to the rear section, and the locking portion 312 is a barb structure.
[0056] Specifically, the barb structure of the locking portion 312 can firmly hook the striking hammer 4, prevent the striking hammer 4 from accidentally moving in the non-triggered state, and the end face of the striking hammer 4 matched with the barb structure is designed as an inverted cone, which can further enhance the locking stability.
[0057] In an optional embodiment, the outer tube 1 is provided with a front top 12 fixedly installed at the outlet end of the outer tube 1, and the front top 12 has a second through hole 13 for defining the movement direction of the striking head 5 in the outer tube 1.
[0058] Specifically, the movement trajectory and direction of the striking head 5 in the outer tube 1 can be accurately controlled through the second through hole 13, ensuring that the striking head 5 can move according to the predetermined path when the window breaking device is used, thereby improving the accuracy of striking, and the front top 12 also plays a role in reinforcing the outer tube 1, which increases the stability of the outlet end of the outer tube 1 and prevents deformation or damage caused by external impact during use.
[0059] In an optional embodiment, the striking head 5 includes a striking pin 51 and a needle 54, the needle 54 is fixed on the striking pin 51, and the striking pin 51 is slidingly arranged on the second through hole 13.
[0060] When the window breaking device is in the standby triggered state, the needle 54 exceeds the outlet end of the outer tube 1 and does not exceed the outlet end of the trigger sleeve 6; when the window breaking device is in the triggered state, the trigger sleeve 6 moves towards the outer tube 1, and the needle 54 exceeds the outlet end of the trigger sleeve 6.
[0061] Specifically, in the standby triggered state, the needle 54 exceeds the outlet end of the outer tube 1 but does not exceed the outlet end of the trigger sleeve 6, and when the window breaking device is in the triggered state, the needle 54 can be completely extended and exceed the outlet end of the trigger sleeve 6, which ensures that the needle 54 will not accidentally extend to cause injury or damage when not triggered, and also ensures that the needle 54 can be quickly and accurately released when needed to break the target glass.
[0062] In an optional embodiment, the hammer 51 comprises a first column 52 and a second column 53, one end of the first column 52 is fixed with the needle 54, the other end of the first column 52 is fixed with the second column 53, the first column 52 is sleeved on the second through hole 13, and the cylindrical surface area of the second column 53 is larger than that of the second through hole 13.
[0063] Specifically, the first column 52 is sleeved on the second through hole 13, which ensures that the movement direction of the hammer 51 in the outer tube 1 is accurate, and avoids deviation or shaking of the hammer 51 during sliding. Since the cylindrical surface area of the second column 53 is larger than that of the second through hole 13, the second column 53 can limit the hammer 51 to prevent it from being stretched too much, and the larger cylindrical surface area of the second column 53 can effectively disperse the impact force caused by the impact of the hammer 45.
[0064] In an optional embodiment, the tail top 7 is arranged at the end of the outer tube 1, and the spring 2 abuts against the tail top 7 when the locking mechanism 3 locks the hammer 4 and compresses the spring 2 in the outer tube 1.
[0065] Specifically, the spring 2 abuts against the tail top 7 to form a stable support point, which helps to enhance the structural stability of the entire window breaking device, and the stable support of the tail top 7 ensures that the spring 2 can release energy smoothly, thereby optimizing the impact effect.
[0066] In an optional embodiment, the third through hole 71 is arranged on the tail top 7, the pulling rope 8 is arranged on the hammer 4, the spring 2 is sleeved on the pulling rope 8, and the pulling rope 8 passes through the third through hole 71.
[0067] Specifically, after completing a window breaking trigger, the hammer 4 can be pulled back by pulling the pulling rope 8, and the spring 2 is compressed, so that the window breaking device returns to the standby state.
[0068] In an optional embodiment, the end surface of the hammer 4 is provided with a clamping groove 41, and the spring 2 is clamped on the clamping groove 41.
[0069] Specifically, the spring 2 is clamped on the clamping groove 41, which can more effectively transmit the stored elastic potential energy to the hammer 4, and the spring 2 can be fixed in the clamping groove 41 through the clamping groove 41, which can simplify the assembly between the spring 2 and the hammer 4.
[0070] In an alternative embodiment, the locking mechanism 3 comprises a first body 331, a first locking portion 332, a first support seat 333, a first trigger portion 334, a sliding rail 335 and a false trigger prevention portion 336;
[0071] The first locking portion 332 and the first support seat 333 are arranged between the first body 331 and the outer tube 1, the sliding rail 335 is annularly arranged at the end of the outer tube 1, and the false trigger prevention portion 336 is movably mounted on the sliding rail 335;
[0072] The first locking portion 332 locks the hammer 4 through the first through hole 11, the top of the first support seat 333 is hingedly connected with the first body 331, the bottom of the first support seat 333 is fixedly connected with the outer tube 1, and the first trigger portion 334 is arranged at the end of the first body 331.
[0073] Specifically, in order to prevent the window breaking device from being triggered in non-use, the false trigger prevention portion 336 is rotated to be located between the first body 331 and the outer tube 1, and due to the blocking effect of the false trigger prevention portion 336, even if the first trigger portion 334 is pressed, the first locking portion 332 will not be in contact with the locking of the hammer 4, when the false trigger prevention portion 336 is rotated to change the position of the false trigger prevention portion 336, and then the first trigger portion 334 is pressed again, the window breaking device can be triggered, and the position of the false trigger prevention portion 336 can be quickly changed through the sliding rail 335, and such design can improve the safety and stability of the equipment.
[0074] In an alternative embodiment, the locking mechanism 3 further comprises a second body 341, a second locking portion 342, a second support seat 343 and a second trigger portion 344;
[0075] The second body 341 comprises an inner ring 3411 and an outer ring 3412, one side of the support seat 343 is fixedly connected with the inner ring 3411, and the other side of the support seat 343 is fixedly connected with the outer tube 1;
[0076] The outer ring 3412 is freely rotatable, the second locking portion 342 and the second trigger portion 344 are symmetrically arranged on the outer ring, the second locking portion 342 locks the hammer 4 through the first through hole 11, and the middle portion of the second trigger portion 344 is provided with a hinge portion, and when the window breaking device is in a state ready to be triggered, the second trigger portion 344 can be folded and stored.
[0077] Specifically, when the window breaking device is in a state of waiting for activation, the spring 2 is in a compressed state and the hammer 4 is at the end of the outer tube 1, the hammer 4 is locked by the second locking part 342 through the first through hole 11, the user rotates the outer ring 3412 by rotating the second trigger part 344, changes the position of the second locking part 342, releases the limitation of the second locking part 342 on the hammer 4, and the second trigger part 344 is foldable, so that the window breaking device can avoid accidental activation when not in use.
[0078] In an optional embodiment, the locking mechanism 3 further comprises a third body 345, a third locking part 346 and a third trigger part 347.
[0079] One end of the third body 345 is fixedly connected with the outer tube 1, the other end of the third body 345 is provided with a mounting hole, the top of the third locking part 346 is fixedly connected with the bottom of the third trigger part 347, and the third locking part 346 is movably installed in the mounting hole.
[0080] Specifically, when the window breaking device is in a state of waiting for activation, the spring 2 is in a compressed state and the hammer 4 is at the end of the outer tube 1, the hammer 4 is locked by the second locking part 342 through the first through hole 11, the user rotates the outer ring 3412 by rotating the second trigger part 344, changes the position of the second locking part 342, releases the limitation of the second locking part 342 on the hammer 4, and the second trigger part 344 is foldable, so that the window breaking device can avoid accidental activation when not in use.
[0081] The embodiments of the utility model are introduced in detail above, and the principle and implementation mode of the utility model are described by using specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the utility model.
Claims
1. A window breaking device, characterized in that, The window breaking device comprises an outer tube, a spring, a locking mechanism, a hitting hammer and a hitting head, wherein: The outer tube is a hollow tube, the hitting head, the hitting hammer and the spring are sequentially arranged in the outer tube, the hitting head is located at the outlet end of the outer tube, the spring is located at the end of the outer tube, the locking mechanism is located on the outer tube and is arranged between the hitting hammer and the hitting head; When the window breaking is not performed, the locking mechanism locks the hitting hammer to compress the spring in the outer tube, when the window breaking is performed, the locking mechanism releases the hitting hammer so that the spring impacts the hitting hammer to drive the hitting hammer to hit the hitting head.
2. The window breaking device of claim 1, wherein, The window breaking device further comprises a trigger sleeve, the trigger sleeve is slidingly sleeved on the front end of the outer tube; The trigger sleeve comprises a trigger part, the trigger part is arranged on the side of the trigger sleeve close to the locking mechanism, the trigger part is provided with a protruding structure at one end of the trigger sleeve, the protruding structure can abut against the locking mechanism to complete the unlocking process of the locking mechanism.
3. The window breaking device of claim 2, wherein, The locking mechanism comprises a hammer locking hook and a locking hook mounting seat, the locking hook mounting seat is fixed on the outer wall of the outer tube; One end of the hammer locking hook is hinged to the locking hook mounting seat, the other end of the hammer locking hook is provided with an unlocking part and a locking part; The outer tube comprises a first through hole, the first through hole is located on the outer tube and is arranged between the hitting hammer and the hitting head; The unlocking part is used for abutting against the trigger part to complete the window breaking unlocking, the locking part is used for penetrating through the first through hole on the outer tube and clamping the hitting hammer in the outer tube; When the hitting hammer is clamped by the hammer locking hook, the spring is compressed in the outer tube.
4. The window breaking device of claim 3, wherein, The unlocking part is a cam structure, the curvature radius of the cam gradually increases from the front section to the rear section, and the locking part is a barb structure.
5. The breakage device of claim 2, wherein The outer tube is provided with a front top, the front top is fixedly installed on the outlet end of the outer tube, the front top has a second through hole, and the second through hole is used to limit the movement direction of the hitting head in the outer tube.
6. The window breaking device of claim 5, wherein, The hitting head comprises a firing pin and a needle head, the needle head is fixed on the firing pin, and the firing pin is slidingly arranged on the second through hole; When the window breaking device is in the standby state, the needle head exceeds the outlet end of the outer tube and does not exceed the outlet end of the trigger sleeve; when the window breaking device is in the activated state, the trigger sleeve moves towards the outer tube, and the needle head exceeds the outlet end of the trigger sleeve.
7. The window breaking device of claim 6, wherein, The firing pin comprises a first column and a second column, one end of the first column is fixed with the needle head, the other end of the first column is fixed with the second column, the first column is sleeved on the second through hole, and the cylindrical surface area of the second column is greater than that of the second through hole.
8. The breakage device of claim 1, wherein, The end of the outer tube is provided with a tail top, when the locking mechanism locks the hitting hammer to compress the spring in the outer tube, the spring abuts against the tail top.
9. The breakage device of claim 8, wherein, The tail top is provided with a third through hole, the hitting hammer is provided with a pull rope, the spring is sleeved on the pull rope, and the pull rope penetrates through the third through hole.
10. The breakage device of claim 1, wherein, The end face of the hammer is provided with a clamping groove, and the spring is clamped on the clamping groove.