Safety hammer

Abstract

The utility model relates to a safety hammer which comprises a front shell, a rear shell, an ejector pin assembly and a force storage piece. Telescopic grooves are formed in the front shell and the rear shell in the axial direction, the ejector pin assembly is connected into the telescopic grooves in a sliding mode in the axial direction, the ejector pin assembly can rotate in the telescopic grooves in the axial direction, and the ejector pin assembly synchronously rotates along with the rear shell. The sliding groove comprises a spiral groove and a triggering groove which are communicated, the triggering groove extends in the sliding direction, and the sliding block is slidably connected into the sliding groove; a through hole is formed in the end, away from the rear shell, of the front shell, and the through hole directly faces the tip end of the ejector pin assembly in the axial direction; the force storage piece is arranged between the ejector pin assembly and the rear shell and used for providing driving force for the ejector pin assembly so that the ejector pin assembly can slide towards the through hole. When the slider moves to one end of the trigger groove away from the rear shell, the tip extends out of the through hole. According to the safety hammer provided by the invention, a user does not need to apply large force to flap, and can break a window only by rotating the rear shell, so that labor is saved, and the safety during use is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a safety hammer. Background Technology

[0002] Safety hammers are standard equipment in vehicles for emergency use to ensure the safety of people and property. Currently available pin-type safety hammers generally require the hammer to be compressed against the car window before firing. This method involves directly overcoming spring resistance during compression, and to ensure the pin delivers sufficient force to shatter the glass, the spring compression process also requires relatively large forces. This is not user-friendly for female drivers. Furthermore, after shattering the glass, the driver cannot immediately release the force, causing the arm to continue moving in the direction of impact. This increases the risk of arm injuries from broken glass. Therefore, a safety hammer that is both labor-saving and safe is a pressing technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0003] Therefore, it is necessary to provide a safety hammer that allows users to break windows simply by rotating the rear shell without having to apply a large force, thus saving effort and improving safety during use.

[0004] A safety hammer includes a front shell, a rear shell, a pin assembly, and a power storage component. The front shell and the rear shell are rotatably connected. An axial expansion groove is formed inside the front shell and the rear shell. The pin assembly is slidably connected to the expansion groove along the axial direction. The pin assembly is capable of rotating around the axial direction and sliding along the axial direction within the expansion groove when the rear shell rotates relative to the front shell.

[0005] The ejector pin assembly is provided with a slider; a sliding groove is provided in the front shell, the sliding groove includes a communicating spiral groove and a trigger groove, the trigger groove extends along the sliding direction, the slider is slidably connected in the sliding groove, and the slider slides with the ejector pin assembly;

[0006] The ejector pin assembly has a pointed end away from the rear housing, and the front housing has a through hole at the end away from the rear housing. The power storage member is located between the ejector pin assembly and the rear housing, and the power storage member is used to provide driving force to the ejector pin assembly to slide toward the through hole. When the slider slides from the spiral groove to the end of the trigger groove away from the rear housing, the pointed end extends out of the through hole under the action of the power storage member.

[0007] In the safety hammer provided in this application, the ejector pin assembly can rotate axially within the telescopic groove. The ejector pin assembly rotates synchronously with the rear housing, so that when the rear housing rotates, the ejector pin assembly rotates while simultaneously undergoing axial movement. The accumulator enhances the driving force of the ejector pin assembly, causing it to slide towards the through hole. When the slider moves to the end of the trigger groove furthest from the rear housing, the tip protrudes from the through hole and is exposed outside the front housing, thereby breaking the glass and achieving the function of a safety hammer. Unlike existing technologies, the safety hammer improved in this application avoids directly compressing the spring by changing the firing method, reducing the firing force and preventing secondary injuries to the arm from broken glass, thus improving safety when using the safety hammer.

[0008] In one embodiment, both the spiral groove and the trigger groove are formed on the groove wall of the telescopic groove, and the spiral groove extends circumferentially along the telescopic groove; one end of the spiral groove is connected to the end of the trigger groove near the through hole, and the other end of the spiral groove is connected to the end of the trigger groove away from the through hole.

[0009] In one embodiment, the ejector assembly includes an ejector pin and a housing, the ejector pin being fixed in the housing and the housing being slidably connected to the telescopic groove; the slider is disposed on the outer wall surface of the housing, and the end of the ejector pin away from the rear housing forms the tip.

[0010] In one embodiment, the outer shell has a first receiving groove at one end facing the rear shell, a sleeve is fixed in the rear shell, and the sleeve has a second receiving groove at one end facing the outer shell; the first receiving groove sleeves the sleeve, or the second receiving groove sleeves the outer shell; the energy storage component includes a telescopic spring, one end of the telescopic spring abuts against the first receiving groove, and the other end abuts against the second receiving groove.

[0011] In one embodiment, the first receiving groove is fitted with the sleeve, the groove wall of the first receiving groove forms a guide groove along the axial direction, the outer side of the sleeve forms a guide block, and the guide block is slidably connected in the guide groove.

[0012] In one embodiment, the front shell is sleeved with the rear shell, the front shell has a raised front limiting rib on the sleeve surface, the rear shell has a raised rear limiting rib on the sleeve surface, the rear limiting rib is located on the side of the front limiting rib near the through hole, and the front limiting rib abuts against the rear limiting rib.

[0013] In one embodiment, the through hole connects to the expansion groove, the diameter of the through hole is smaller than that of the expansion groove, and a first gasket is provided at one end of the expansion groove near the through hole, the first gasket avoiding the through hole.

[0014] In one embodiment, the telescopic groove is a cylindrical groove, and the outer wall surface of the ejector pin assembly is a cylindrical surface; a second gasket is provided at the end of the front shell away from the rear shell, and the second gasket avoids the through hole.

[0015] In one embodiment, the end of the front shell near the rear shell is provided with a first safety line along the axial direction, and the end of the rear shell near the front shell is provided with a second safety line along the axial direction; when the first safety line and the second safety line are aligned along the axial direction, the slider slides from the spiral groove into the trigger groove.

[0016] In one embodiment, the rear housing includes a rear cover and a ratchet assembly. The rear cover is located at the end of the rear housing away from the front housing. The ratchet assembly is located between the power storage member and the rear cover and is connected to the power storage member. The ratchet assembly includes a ratchet disc and a limiting post. The limiting post can engage with the pawl of the ratchet disc to prevent the ratchet disc from rotating in the opposite direction. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of a safety hammer provided in one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a safety hammer provided in one embodiment of this application;

[0020] Figure 3 An exploded view of a safety hammer provided in an embodiment of this application;

[0021] Figure 4 An exploded view of a safety hammer provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of a portion of the structure of a safety hammer provided in one embodiment of this application;

[0023] Figure 6 This is a schematic diagram of a portion of the structure of a safety hammer provided in one embodiment of this application;

[0024] Figure 7 A cross-sectional view of a portion of the structure of a safety hammer provided in an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of a portion of the structure of a safety hammer provided in one embodiment of this application;

[0026] Figure 9 This is a schematic diagram of a portion of the structure of a safety hammer provided in an embodiment of this application.

[0027] Reference numerals: Safety hammer 10; Front shell 20; Telescopic groove 21; Slide groove 22; Spiral groove 221; Trigger groove 222; Through hole 23; First safety line 24; Rear shell 30; Socket 31; Second receiving groove 311; Guide block 312; Rear cover 32; Ratchet assembly 33; Ratchet disc 331; Limiting post 332; Second safety line 34; Ejector pin assembly 40; Slider 41; Tip 42; Ejector pin 43; Outer shell 44; First receiving groove 441; Guide groove 4410; Power storage component 50; Telescopic spring 51; Front limiting rib 61; Rear limiting rib 62; First gasket 71; Second gasket 72 Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] A safety hammer is an emergency escape tool primarily used to break car windows in the event of an accident, helping passengers quickly escape the vehicle. Safety hammers are typically installed inside the car, in easily accessible yet concealed locations such as the headliner or the inside of the doors. To use a safety hammer, it needs to be retrieved from its concealed location and struck forcefully at the four corners of the window, especially the corners where it is more likely to break. Once the glass breaks, passengers can escape through the hole. Currently available pin-type safety hammers generally require the hammer body to be compressed against the car window before firing. This firing method requires directly overcoming spring resistance during compression. To ensure the pin has the force needed to break the glass, the spring compression process also requires relatively large force, making it inconvenient to use and unfriendly to drivers with less strength. Furthermore, after breaking the glass, the driver cannot immediately release the force, causing the arm to continue moving in the direction of impact. This can easily lead to cuts from broken glass and injury. Therefore, a safety hammer that is labor-saving and improves safety is a technical problem that urgently needs to be solved by those skilled in the art.

[0033] refer to Figures 1-9To address the aforementioned problems, this application provides a safety hammer 10, comprising a front shell 20, a rear shell 30, a pin assembly 40, and a power storage component 50. The front shell 20 and the rear shell 30 are rotatably connected. An axially extending groove 21 is formed inside the front shell 20 and the rear shell 30. The pin assembly 40 is axially slidably connected within the extension groove 21, and the pin assembly 40 can rotate axially and slide axially within the extension groove 21 when the rear shell 30 rotates relative to the front shell 20. A slider 41 is provided on the pin assembly 40. A sliding groove 22 is formed in the front shell 20, the sliding groove 22 including a communicating spiral groove 221 and a trigger groove 222. 2. Extending along the sliding direction, the slider 41 is slidably connected in the groove 22, and the slider 41 slides with the ejector assembly 40; the end of the ejector assembly 40 away from the rear shell 30 forms a tip 42, and the end of the front shell 20 away from the rear shell 30 is provided with a through hole 23, which is axially aligned with the tip 42 of the ejector assembly 40; the accumulator 50 is provided between the ejector assembly 40 and the rear shell 30, and the accumulator 50 is used to provide the ejector assembly 40 with driving force to slide toward the through hole 23; when the slider 41 slides from the spiral groove 221 to the end of the trigger groove 222 away from the rear shell 30, the tip 42 extends out of the through hole 23 under the action of the accumulator 50.

[0034] In this safety hammer 10, the front shell 20 and the rear shell 30 are rotatably connected. During use, the rear shell 30 can be rotated to change its position relative to the front shell 20, thereby releasing the tip 42 of the ejector assembly 40. For example, in some embodiments, the end of the front shell 20 near the rear shell 30 is provided with a first safety line 24 along the axial direction, and the end of the rear shell 30 near the front shell 20 is provided with a second safety line 34 along the axial direction. During use, the circumferential distance between the first safety line 24 and the second safety line 34 can be changed by rotating the rear shell 30. Specifically, the front shell 20 and the rear shell 30 constitute the external structure of the safety hammer 10, with the front shell 20 being a fixed assembly and the rear shell 30 being a rotating assembly. The ejector assembly 40 is disposed within the internal space of the front shell 20 and the rear shell 30. An axially formed telescopic groove 21 is formed inside the front shell 20 and the rear shell 30, allowing the ejector assembly 40 to rotate axially within the telescopic groove 21. For example, in some embodiments, the telescopic groove 21 can be a cylindrical groove, and the outer wall surface of the ejector pin assembly 40 is a cylindrical surface. The ejector pin assembly 40 is movably disposed inside the telescopic groove 21. The ejector pin assembly 40 can rotate synchronously with the rear shell 30, so that when the rear shell 30 rotates, the ejector pin assembly 40 rotates while simultaneously undergoing axial movement. In some embodiments, a sliding groove 22 is provided in the front shell 20, and a slider 41 is provided on the ejector pin assembly 40. The slider 41 is slidably connected within the sliding groove 22, thereby allowing the ejector pin assembly 40 to be slidably connected within the front shell 20. The slide groove 22 includes a connected spiral groove 221 and a trigger groove 222. The trigger groove 222 extends along the sliding direction and is an axial groove. When the slider 41 is on the spiral groove 221, the spiral groove 221 and the ejector assembly 40 are in opposite directions of movement, which limits the ejector assembly 40. When the slider 41 is on the trigger groove 222, the extension direction of the slider 41 is the same as the movement direction of the ejector assembly 40, so it can no longer limit the ejector assembly 40. After the slider 41 rotates to the trigger groove 222, the telescopic spring 51 in the accumulator 50 can release the elastic force instantaneously, thereby pushing the ejector assembly 40 forward along the trigger groove 222. It should be noted that the accumulator 50 initially maintains its accumulating force regardless of the rotation process. Therefore, when the ejector assembly 40 is triggered, the ejector assembly 40 can move within the trigger groove 222 along the sliding direction of the ejector assembly 40, thereby realizing the process of the safety hammer 10 breaking the window. In the aforementioned process, the slider 41 can move within the spiral groove 221. In some embodiments, the end of the ejector assembly 40 furthest from the rear housing 30 forms a tip 42. When using the safety hammer 10, the tip 42 of the ejector assembly 40 can directly contact the glass to be broken, thus enabling the safety hammer 10 to break the window. The tip 42 can increase the pressure between the safety hammer 10 and the glass. Under a constant pressure, the pressure is increased by reducing the contact area. Under the same pressure, the tip 42 can generate a greater impact force, making the striking effect more significant.In some embodiments, the shape of the tip 42 can be adjusted according to different operational requirements. For example, in situations requiring precise strikes, the tip 42 design can provide higher precision and accuracy. A through hole 23 is provided at the end of the front housing 20 away from the rear housing 30. The through hole 23 is axially aligned with the tip 42 of the ejector assembly 40, allowing the tip 42 to protrude from the front housing 20 of the safety hammer 10 through the through hole 23. In some embodiments, the through hole 23 connects to the telescopic groove 21, and the diameter of the through hole 23 is smaller than that of the telescopic groove 21. The through hole 23 ensures that when the slider 41 of the ejector assembly 40 moves to the trigger groove 222, and the ejector assembly 40 is ejected, the tip 42 can protrude from the front housing 20 through the through hole 23. In some embodiments, the front housing 20 is configured as a cylindrical structure, and the diameter of the through hole 23 is smaller than the radial diameter of the front housing 20. In some embodiments, a first gasket 71 is provided at one end of the telescopic groove 21 near the through hole 23. The first gasket 71 can be attached to the inner wall of the telescopic groove 21, and avoids the through hole 23. The first gasket 71 can absorb the impact of the ejector pin 43, preventing damage to the front shell 20 caused by the outer shell 44 of the ejector pin assembly 40 during rapid movement, thereby improving the safety of the safety hammer 10. In some embodiments, a second gasket 72 is provided at the end of the front shell 20 away from the rear shell 30. The second gasket 72 can be disposed on the outer side of the front shell 20 away from the rear shell 30, and can be attached to the outer side of the front shell 20. The second gasket 72 avoids the through hole 23 and can play a role in preventing slippage. In some embodiments, a power storage member 50 is provided between the ejector pin assembly 40 and the rear shell 30. The power storage member 50 can increase the driving force of the ejector pin assembly 40, so that the ejector pin assembly 40 slides toward the through hole 23. When the slider 41 moves to the end of the trigger groove 222 away from the rear shell 30, the tip 42 protrudes from the through hole 23 and is exposed outside the front shell 20, thereby breaking the glass through the tip 42 to achieve the function of the safety hammer 10. In some embodiments, both the front shell 20 and the rear shell 30 have a safety scale line. When the safety scale line on the front shell 20 coincides with the safety scale line on the rear shell 30, it means that the safety hammer 10 is about to be fired, and it should not be tightened further for the purpose of storage. For example, the end of the front shell 20 near the rear shell 30 is provided with a first safety line 24 along the axial direction, and the end of the rear shell 30 near the front shell 20 is provided with a second safety line 34 along the axial direction. When the first safety line 24 and the second safety line 34 are aligned along the axial direction, the slider 41 slides from the spiral groove 221 into the trigger groove 222. In emergency window breaking, starting from the alignment of the scale lines, a small rotation can fire and eject the hammer head. Unlike existing technologies, the safety hammer 10 improved in this application can avoid directly compressing the spring by changing the firing method of the safety hammer 10. Users do not need to apply a lot of force to strike, but only need to rotate the back shell 30 to break the window. This can reduce the firing force and avoid secondary injury to the arm from broken glass, saving effort and improving safety during use.

[0035] See Figure 2 and Figure 3 In some embodiments, the ejector pin assembly 40 includes an ejector pin 43 and a housing 44. The ejector pin 43 is primarily used to break the window glass in an emergency to assist passengers in escaping or rescue. The ejector pin 43 is typically made of hard alloy, which has high hardness and high wear resistance; for example, the ejector pin 43 can be made of tungsten steel. Hard alloy has high hardness and high wear resistance, enabling it to effectively break glass. The design and material selection of the ejector pin 43 ensure that it can provide sufficient impact force in an emergency, thereby effectively breaking the vehicle window glass. The ejector pin 43 is fixed in the housing 44, which is slidably connected within the telescopic groove 21. Both the ejector pin 43 and the housing 44 are disposed inside the front housing 20 and the rear housing 30, respectively. When the housing 44 slides within the telescopic groove 21, the ejector pin 43 slides together with the housing 44 within the telescopic groove 21. A slider 41 is disposed on the outer wall surface of the housing 44 and can move within the spiral groove 221 and the trigger groove 222. As the slider 41 moves within the spiral groove 221 and the trigger groove 222, the ejector pin 43 and the outer casing 44 slide within the telescopic groove 21. The end of the ejector pin 43 furthest from the rear casing 30 forms a tip 42, which increases the pressure between the safety hammer 10 and the glass. Under constant pressure, the pressure is increased by reducing the contact area. Under the same pressure, the tip 42 can generate a greater impact force, making the striking effect more significant. When the ejector pin 43 is ejected at high speed along the trigger groove 222, the tip 42 of the ejector pin 43 quickly extends out of the through hole 23 to break the glass. The user does not need to apply significant force; simply rotating the rear casing 30 is sufficient to break the window, saving effort and improving the safety of the safety hammer 10.

[0036] See Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8In some embodiments, both the spiral groove 221 and the trigger groove 222 are formed on the groove wall of the telescopic groove 21. The spiral groove 221 extends circumferentially along the telescopic groove 21, and the slider 41 on the ejector assembly 40 can slide in the spiral groove 221 so that the ejector assembly 40 can rotate in the telescopic groove 21 and move axially at the same time. Specifically, when the slider 41 on the ejector assembly 40 has not reached the trigger groove 222, the tip 42 of the ejector assembly 40 is located inside the front housing 20. The slider 41 on the ejector assembly 40 can rotate together with the rear housing 30. When the slider 41 on the ejector assembly 40 rotates to the upper end of the spiral groove 221, it will reach the trigger groove 222 after rotating a certain angle. When the slider 41 on the ejector assembly 40 reaches the trigger groove 222, the ejector 43 will be acted upon by the telescopic spring 51. In an instant, the ejector 43 will be ejected at high speed along the trigger groove 222, and the tip 42 of the ejector assembly 40 will quickly extend out of the through hole 23 to break the glass, thus realizing the process of the safety hammer 10 breaking the glass. When the slider 41 has not reached the trigger groove 222, the side wall of the spiral groove 221 can abut against the slider 41, so that the ejector assembly 40 will not be ejected under the action of the telescopic spring 51. When slider 41 reaches trigger groove 222, slider 41 can move at high speed along trigger groove 222 in an instant, and ejector pin assembly 40 pops out under the action of telescopic spring 51. In this process, by changing the firing mode of safety hammer 10, the tip 42 of ejector pin assembly 40 is made to pass through through hole 23 at high speed and protrude outside the front shell 20 of safety hammer 10. The tip 42 of ejector pin assembly 40 will quickly extend out of through hole 23 to break the glass, which can avoid direct compression of spring and reduce the firing force when using safety hammer 10.

[0037] Continue reading Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9In some embodiments, one end of the spiral groove 221 is connected to the end of the trigger groove 222 near the through hole 23, and the other end of the spiral groove 221 is connected to the end of the trigger groove 222 away from the through hole 23. The spiral groove 221 allows the ejector pin 43 to move axially along the spiral groove 221, allowing the ejector pin 43 to move from one end of the trigger groove 222 to the other end of the trigger groove 222. At the same time, when the ejector pin 43 is subjected to axial elastic force, it is not easy to move along the spiral groove 221, but is fixed on the spiral groove 221. In some embodiments, the rear housing 30 includes a rear cover 32 and a ratchet assembly 33. The rear cover 32 is located at the end of the rear housing 30 away from the front housing 20. The ratchet assembly 33 is located between the power storage member 50 and the rear cover 32, and is connected to the power storage member 50. The ratchet assembly 33 includes a ratchet disc 331 and a limiting post 332. The limiting post 332 can engage with the pawl of the ratchet disc 331 to prevent the ratchet disc 331 from rotating in the opposite direction. The pawl and the telescopic spring 51 are mounted on the rear cover 32. The ratchet assembly 33 is nested with the telescopic spring 51 through a sleeve 31 and then installed in the gap space between the rear housing 30 and the rear cover 32. The ratchet disc 331 and the sleeve 31 are relatively stationary, and the sleeve 31 rotates with the ratchet disc 331 during use. During the retraction of the telescopic spring 51, the ratchet and pawl mechanism prevents the rear housing 30 from reversing.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8In some embodiments, the outer shell 44 has a first receiving groove 441 at one end facing the rear shell 30. The first receiving groove 441 is opened inside the outer shell 44. A sleeve 31 is fixed in the rear shell 30. The first receiving groove 441 is fitted with the sleeve 31 to realize the detachable connection between the outer shell 44 and the rear shell 30. When the sleeve 31 is fitted into the first receiving groove 441, the outer surface of the sleeve 31 can abut against the inner sidewall of the first receiving groove 441. In some embodiments, the outer shell 44 has a first receiving groove 441 at one end facing the rear shell 30. The first receiving groove 441 is formed inside the outer shell 44. A sleeve 31 is fixed in the rear shell 30. A second receiving groove 311 is formed at one end of the sleeve 31 facing the outer shell 44. The second receiving groove 311 fits onto the outer shell 44 to achieve a detachable connection between the outer shell 44 and the rear shell 30. When the second receiving groove 311 is fitted onto the outer shell 44, the inner sidewall of the second receiving groove 311 can abut against the outer surface of the outer shell 44. In some embodiments, the sleeve 31 is fitted onto the first receiving groove 441. The groove wall of the first receiving groove 441 forms a guide groove 4410 along the axial direction. A guide block 312 is formed on the outer side of the sleeve 31. The guide block 312 is slidably connected in the guide groove 4410, which can keep the sleeve 31 and the rear shell 30 relatively stationary, and allow the sleeve 31 to rotate together with the rear shell 30. In some embodiments, the accumulator 50 includes a telescopic spring 51, which provides elastic force for the high-speed ejection of the ejector pin 43 structure when the safety hammer 10 strikes. Specifically, one end of the telescopic spring 51 abuts against the first receiving groove 441, and the other end abuts against the second receiving groove 311. When the ejector pin 43 is in a non-ejection state, both ends of the telescopic spring 51 abut against the first receiving groove 441 and the second receiving groove 311 respectively, ensuring the stability of the position of the telescopic spring 51. In some embodiments, when the ejector pin 43 is in a non-ejection state, the telescopic spring 51 is in a compressed state.

[0039] See Figures 3-8 In some embodiments, the front shell 20 and the rear shell 30 are sleeved together, and the rear shell 30 can rotate relative to the front shell 20, ensuring that the rear shell 30 will not fall off relative to the front shell 20 during rotation. Specifically, the front shell 20 is provided with a raised front limiting rib 61 on the sleeve surface, and the rear shell 30 is provided with a raised rear limiting rib 62 on the sleeve surface. The rear limiting rib 62 is located on the side of the front limiting rib 61 near the through hole 23. By restricting the movement of the rear shell 30, the rear shell 30 is prevented from falling off relative to the front shell 20, thereby improving the stability and safety of the safety hammer 10.

[0040] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safety hammer, characterized in that, The device includes a front shell, a rear shell, an ejector pin assembly, and a power storage component. The front shell and the rear shell are rotatably connected. An axial expansion groove is formed inside the front shell and the rear shell. The ejector pin assembly is slidably connected to the expansion groove along the axial direction. The ejector pin assembly can rotate around the axial direction and slide along the axial direction within the expansion groove when the rear shell rotates relative to the front shell. The ejector pin assembly is provided with a slider; a sliding groove is provided in the front shell, the sliding groove includes a communicating spiral groove and a trigger groove, the trigger groove extends along the sliding direction, the slider is slidably connected in the sliding groove, and the slider slides with the ejector pin assembly; The ejector pin assembly has a pointed end away from the rear housing, and the front housing has a through hole at the end away from the rear housing. The power storage member is located between the ejector pin assembly and the rear housing, and the power storage member is used to provide driving force to the ejector pin assembly to slide toward the through hole. When the slider slides from the spiral groove to the end of the trigger groove away from the rear housing, the pointed end extends out of the through hole under the action of the power storage member.

2. The safety hammer according to claim 1, characterized in that, Both the spiral groove and the trigger groove are formed on the groove wall of the telescopic groove, and the spiral groove extends circumferentially along the telescopic groove; one end of the spiral groove is connected to the end of the trigger groove near the through hole, and the other end of the spiral groove is connected to the end of the trigger groove away from the through hole.

3. The safety hammer according to claim 1, characterized in that, The ejector assembly includes an ejector pin and a housing. The ejector pin is fixed in the housing, and the housing is slidably connected to the telescopic groove. The slider is disposed on the outer wall surface of the housing, and the end of the ejector pin away from the rear housing forms the tip.

4. The safety hammer according to claim 3, characterized in that, The outer shell has a first receiving groove at one end facing the rear shell, and a sleeve is fixed in the rear shell. The sleeve has a second receiving groove at one end facing the outer shell. The first receiving groove is fitted with the sleeve, or the second receiving groove is fitted with the outer shell. The energy storage component includes a telescopic spring, one end of which abuts against the first receiving groove and the other end of which abuts against the second receiving groove.

5. The safety hammer according to claim 4, characterized in that, The first receiving groove is fitted with the sleeve, the groove wall of the first receiving groove forms a guide groove along the axial direction, the outer side of the sleeve forms a guide block, and the guide block is slidably connected in the guide groove.

6. The safety hammer according to claim 1, characterized in that, The front shell and the rear shell are sleeved together. The front shell has a raised front limiting rib on the sleeve surface, and the rear shell has a raised rear limiting rib on the sleeve surface. The rear limiting rib is located on the side of the front limiting rib that is close to the through hole, and the front limiting rib and the rear limiting rib abut against each other.

7. The safety hammer according to claim 1, characterized in that, The through hole connects to the expansion groove, the diameter of the through hole is smaller than that of the expansion groove, and a first gasket is provided at one end of the expansion groove near the through hole, the first gasket avoiding the through hole.

8. The safety hammer according to claim 1, characterized in that, The telescopic groove is a cylindrical groove, and the outer wall of the ejector pin assembly is a cylindrical surface; a second gasket is provided at the end of the front shell away from the rear shell, and the second gasket avoids the through hole.

9. The safety hammer according to claim 1, characterized in that, The front shell has a first safety line along the axial direction at the end near the rear shell, and the rear shell has a second safety line along the axial direction at the end near the front shell; when the first safety line and the second safety line are aligned along the axial direction, the slider slides from the spiral groove into the trigger groove.

10. The safety hammer according to claim 1, characterized in that, The rear housing includes a rear cover and a ratchet assembly. The rear cover is located at the end of the rear housing away from the front housing. The ratchet assembly is located between the power storage member and the rear cover and is connected to the power storage member. The ratchet assembly includes a ratchet disc and a limiting post. The limiting post can engage with the pawl of the ratchet disc to prevent the ratchet disc from rotating in the opposite direction.

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