A reciprocating window breaker

Abstract

The utility model discloses a reciprocating type window breaker, which mainly comprises a shell provided with an installation cavity, a top shell provided in the installation cavity and capable of reciprocating sliding along the inner cavity wall, a cross-shaped ejector pin and a main spring and a return spring provided between the top shell and the installation cavity. The utility model can produce ≥150N instantaneous impact force through the cooperation of the cross-shaped ejector pin and the main spring, and can form continuous impact on the coated glass and thick tempered glass through the design of the reciprocating sliding top shell, thereby effectively solving the problem of difficult breaking of the traditional window breaker in one strike. Meanwhile, the linkage structure of the driving groove and the supporting rod can reduce the influence of water resistance when working in water, ensure the stability of the window breaking force, and greatly shorten the window breaking time.

Description

Technical Field

[0001] This utility model relates to a window breaking device, specifically a reciprocating window breaker. Background Technology

[0002] Currently, window breakers are an essential emergency product in both high-rise buildings and the automotive parts market. Traditional window breakers are simple hammers that require the user to strike the window. If the force is insufficient, multiple strikes are needed, wasting time and resulting in low efficiency in breaking the window and creating an escape route, thus affecting the success rate of escape. While similar push-button automatic window breakers are available on the market, the striking pin is not horizontally positioned inside the casing but at an angle. Under the action of the spring, the striking pin and related components always exert force on the side wall of the casing. This not only makes the side wall of the casing prone to deformation but also reduces the force exerted by the spring on the striking pin. After repeated use, the failure rate increases significantly, and the lifespan is shortened. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of current automatic window breakers, which are all inclined and have a high failure rate and short service life, and to provide a brand new reciprocating window breaker.

[0004] This utility model is achieved through the following technical solution: a reciprocating window breaker, mainly composed of an outer shell with an internal mounting cavity, a top shell disposed inside the mounting cavity and capable of reciprocating along its inner wall, a cross-shaped pin disposed between the top shell and the mounting cavity, a main spring, and a return spring; a tip hole for the tip of the cross-shaped pin to extend and retract is provided at the top of the top shell, and a driving groove is provided on each of the left and right side walls of the top shell; a backflow prevention hole is provided at the bottom of the mounting cavity, and a U-shaped groove is provided on each of the left and right side walls of the outer shell; the tip of the cross-shaped pin faces the tip hole of the top shell, and its tail end passes through the backflow prevention hole and is fixed outside the mounting cavity by a fixing member; the main spring is disposed inside the mounting cavity and is used to hold the cross-shaped pin, and the return spring is disposed inside the mounting cavity and is used to hold the top shell.

[0005] Furthermore, the cross-shaped ejector pin includes a main pin rod and a support rod vertically connected to it. The two ends of the support rod are located in the drive grooves on the left and right sides of the top shell, respectively, and can slide along the groove wall of the drive groove.

[0006] The drive groove is composed of a front through groove, a rear through groove, a top holding end of the upper groove wall provided on the side wall of the top shell for connecting the front through groove and the rear through groove, and an arc-shaped end of the lower groove wall provided on the side wall of the top shell for connecting the front through groove and the rear through groove.

[0007] To ensure that the top shell can only slide in the specified direction within the mounting cavity, two or more guide grooves are provided on the inner wall of the mounting cavity, and guide ribs are provided on the outer wall of the top shell in a number and position that match the guide grooves. When the top shell is installed inside the mounting cavity, the guide ribs are embedded in the guide grooves and can slide back and forth along the groove walls.

[0008] The U-shaped groove is U-shaped in general, and a drive support rod is provided on the groove wall facing the rear through groove to drive the entire cross-shaped ejector pin to rotate.

[0009] As one preferred embodiment, the fixing member is a blocking ring integrally formed or fixedly connected to the main needle rod. A bypass hole communicating with the backflow prevention hole is also provided at the bottom of the mounting cavity. The diameter of the bypass hole is slightly larger than the diameter of the blocking ring, and the diameter of the backflow prevention hole is slightly smaller than the diameter of the blocking ring.

[0010] To facilitate cutting seat belts or other items in an emergency, a cutting blade is also provided on the housing.

[0011] To facilitate lighting, an LED lighting device for illumination is also provided on the other end of the housing.

[0012] To ensure the crushing effect, the instantaneous impact force of the cross-shaped ejector pin is ≥150N.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) This utility model, through the cooperation of the cross-shaped pin and the main spring, can generate an instantaneous impact force of ≥150N. Combined with the reciprocating sliding top shell design, it can form a continuous impact on coated glass and thick tempered glass, which can effectively solve the problem that traditional window breakers are difficult to break with one blow. At the same time, when operating in water, the linkage structure of the drive groove and the support rod reduces the influence of water resistance, ensures stable window breaking force, and greatly shortens the window breaking time.

[0014] (2) The U-shaped groove and the drive groove of this utility model can be matched to achieve rapid triggering without complicated fixed steps, and can be started quickly in an emergency.

[0015] (3) The central axis of the cross-shaped ejector pin of this utility model is on the same straight line as the central axis of the outer shell. There is no tilting state. The elastic force of the main spring is concentrated on the cross-shaped ejector pin. It will not exert any force on the side wall of the outer shell, which can extend the service life of the equipment.

[0016] (4) This utility model can automatically restore to its initial state after the window is broken and can be used repeatedly.

[0017] (5) This utility model also integrates a cutting blade and an LED lighting device, which can increase the application scenarios of this utility model. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the top shell structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the outer shell structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-shaped ejector pin structure of this utility model.

[0022] Figure 5 This is a top view of the internal structure of the outer shell of this utility model.

[0023] Figure 6 This is a structural diagram of the present invention with a cutting blade and an LED lighting device.

[0024] The reference numerals in the above figures are named as follows: 1-Installation cavity, 2-Outer shell, 3-Cross-shaped ejector pin, 4-Top shell, 5-Cutting blade, 6-LED lighting device, 11-Return hole, 12-Guide groove, 13-Bypass hole, 21-U-shaped groove, 31-Main pin rod, 32-Support rod, 33-Tip, 34-Fixing component, 41-Tip hole, 42-Drive groove, 43-Guide rib, 211-Drive surface, 421-Front through groove, 422-Rear through groove, 423-Top holding end, 424-Arc-shaped end. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0026] Example

[0027] The overall structure of the reciprocating window breaker described in this embodiment is as follows: Figure 1 As shown, it mainly consists of several components: outer shell 2, top shell 4, cross-shaped ejector pin 3, main spring, and return spring. The main spring and return spring are not shown in the figure. The structure of outer shell 2 is as follows... Figure 3 and Figure 5 As shown, an installation cavity 1 is provided inside the housing 2. The top of the installation cavity 1 is an open end and the bottom is a closed end. The plane of the open end is the same plane as the end face of the housing 2. A backflow prevention hole 11 is provided at the bottom of the installation cavity 1.

[0028] A U-shaped groove 21 is provided on each of the left and right side walls of the outer shell 2. The two U-shaped grooves 21 are arranged in a centrally symmetrical manner with the central axis of the outer shell 2 as the center. That is, the U-shaped groove 21 on the left side should be completely coincident with the position and shape of the U-shaped groove 21 on the right side after rotating 180 degrees around the central axis of the outer shell 2.

[0029] The structure of the top shell 4 is as follows Figure 2 As shown, it is a semi-enclosed shell with an internal cavity structure; that is, the top of the top shell 4 is closed, while its bottom is open. A pointed hole 41 is provided at the top of the top shell 4. The entire top shell 4 is embedded inside the mounting cavity 1, and can slide back and forth along the inner wall of the mounting cavity 1. To ensure that the top shell 4 can only slide back and forth along the central axis of the mounting cavity 1 without rotation, two or more guide grooves 12 are provided on the inner wall of the mounting cavity 1, and guide ribs 43, whose number, position, and shape match the guide grooves 12, are provided on the outer wall of the top shell 4. When the top shell 4 is installed inside the mounting cavity 1, the guide ribs 43 are embedded inside the guide grooves 12, and the top shell 4, through the cooperation of the guide ribs 43 and the guide grooves 12, can achieve the function of sliding back and forth in a straight line inside the mounting cavity 1.

[0030] A drive groove 42 is provided on each of the left and right side walls of the top shell 4. The two drive grooves 42 are also centrally symmetrical about the central axis of the outer shell 2. That is, the drive groove 42 on the left side should be rotated 180 degrees around the central axis of the outer shell 2 and its position and shape should completely coincide with the drive groove 42 on the right side. The position of the drive groove 42 should correspond to the position of the U-shaped groove 21 to ensure that when the top shell 4 is installed inside the mounting cavity 1, the U-shaped groove 21 and the drive groove 42 together form a complete and closed through groove.

[0031] The structure of the drive slot 42 is as follows Figure 2 As shown, it consists of a horizontally arranged front through groove 421, a horizontally arranged rear through groove 422, a top-holding end 423 of the upper groove wall on the side wall of the top shell 4 for connecting the front through groove 421 and the rear through groove 422, and an arc-shaped end 424 of the lower groove wall on the side wall of the top shell 4 for connecting the front through groove 421 and the rear through groove 422. The horizontal arrangement of the front through groove 421 and the rear through groove 422 means that the central axes of the front through groove 421 and the rear through groove 422 are parallel to the central axis of the top shell 4 or the outer shell 2. The front through groove 421 and the rear through groove 422 are distributed vertically on the top shell 4, with the front through groove 421 located to the left of the rear through groove 422. The front through groove 421 can be located below or above the rear through groove 422. This embodiment uses the example of the front through groove 421 being below the rear through groove 422 for illustration.

[0032] The end face of the top holding end 423 is a plane, and this plane needs to be perpendicular to the central axis of the outer shell 2 or the top shell 4, so as to hold the cross-shaped ejector pin 3 and drive its movement.

[0033] The structure of the U-shaped groove 21 is as follows: Figure 3 As shown, the overall shape is U-shaped, with an open end and a closed end. The end face of the open end is on the same plane as the end face of the outer shell 2. At the bottom of the U-shaped groove 21 and on one side of the rear through groove 422, there is an inclined driving surface 211. This driving surface 211, together with the arc-shaped end 424, can drive the entire cross-shaped ejector pin 3 to rotate. The driving surface 211 extends from the open end of the U-shaped groove 21 to its closed end and gradually slopes, so that the width of the open end of the entire U-shaped groove 21 is greater than the width of its closed end. At the same time, the driving surface 211 can be set as a plane or as an arc surface.

[0034] The structure of the cross-shaped ejector pin 3 is as follows: Figure 4 As shown, it is made of a high-hardness alloy and includes a main needle rod 31, a support rod 32 located at the front end of the main needle rod 31 and perpendicularly connected to the main needle rod 31, and a fixing member 34 located at the tail end of the main needle rod 31. A tip 33 for striking glass is provided at the top end of the main needle rod 31. During installation, the tip 33 is positioned towards the tip hole 41 of the top shell 4, and its tail end passes through the backflow hole 11 and is positioned outside the mounting cavity 1 by the fixing member 34. The diameter of the main spring is smaller than that of the return spring. During installation, the main spring is placed inside the mounting cavity 1, with one end in contact with the cross-shaped ejector pin 3 and the other end in contact with the bottom of the mounting cavity 1. When the main spring is compressed, it can provide the cross-shaped ejector pin 3 with the impact force to break the glass. The return spring is placed inside the mounting cavity 1 and is sleeved on the outside of the main spring. One end of the return spring is in contact with the top shell 4 and the other end is in contact with the bottom of the mounting cavity 1. When the return spring is compressed, it can provide the top shell 4 with the elastic force to return.

[0035] The fixing member 34 is used to prevent the main needle rod 31 from disengaging from the mounting cavity 1 under the elastic force of the main spring, that is, to limit the maximum movement distance of the cross-shaped ejector pin 3. It is preferably achieved by using a blocking ring integrally formed or fixedly connected to the main needle rod 31. In order to facilitate the installation and removal of the cross-shaped ejector pin 3 at any time, a bypass hole 13 communicating with the backflow hole 11 is also provided at the bottom of the mounting cavity 1. The diameter of the bypass hole 13 is slightly larger than the diameter of the blocking ring, while the diameter of the backflow hole 11 is slightly smaller than the diameter of the blocking ring.

[0036] The center point of the backflow prevention hole 11 needs to be located on the central axis of the mounting cavity 1, while the center point of the bypass hole 13 needs to be offset from the central axis of the mounting cavity 1. This is to ensure that during installation, the blocking ring at the tail of the main needle rod 31 can be passed through the bypass hole 13 and aligned with the center point of the backflow prevention hole 11. This ensures that the central axis of the main needle rod 31 is on the same straight line as the central axis of the outer shell 2, the top shell 4, and the mounting cavity 1, thus avoiding the cross-shaped ejector pin 3 and its related components from exerting force on the side wall of the outer shell 2.

[0037] To further prevent the blocking ring from impacting the bottom of the mounting cavity 1, a metal sheet can also be placed at the bottom of the mounting cavity 1.

[0038] Alternatively, the fixing member 34 can be replaced by a screw or pin. In this case, a hole needs to be provided at the tail end of the main needle rod 31. After the tail end of the main needle rod 31 passes through the anti-return hole 11, the screw or pin is inserted into the hole, which can also prevent the main needle rod 31 from dislodging from the mounting cavity 1 under the elastic force of the main spring.

[0039] After the above structure is installed, the cross-shaped ejector pin 3 is located in the cavity formed by the top shell 4 and the outer shell 2, and the two ends of the support rod 32 are respectively embedded in the closed through groove formed by the drive groove 42 and the U-shaped groove 21. Since the front through groove 421 and the rear through groove 422 are arranged vertically, an S-shaped through groove is formed between the front through groove 421 and the rear through groove 422. In addition, the position restriction effect of the fixing part 34 at the tail of the main needle rod 31 makes the outer shell 2, the cross-shaped ejector pin 3, the top shell 4, the main spring and the return spring form a whole.

[0040] At this time, both the main spring and the return spring are in a free state or slightly compressed. The support rod 32 of the cross-shaped ejector pin 3 is located inside the rear through groove 422 and is held by the supporting end 423. The top of the top shell 4 extends out of the mounting cavity 1 under the supporting action of the main spring, and the tip 33 of the cross-shaped ejector pin 3 is hidden inside the top shell 4. When the top shell 4 is pressed against the glass to be broken and the outer shell 2 is pushed forcefully, both the main spring and the return spring are compressed under the action of the supporting end 423. The cross-shaped ejector pin 3 moves towards the bottom of the mounting cavity 1 under the drive of the support rod 32, and the support rod 32 gradually approaches the driving surface 211 of the U-shaped groove 21. When the support rod 32 slides along the driving surface 211 under the action of external force, the support rod 32 will be forced to turn and slide forward through groove 421 under the combined action of the supporting end 423 and the driving surface 211, and both the main spring and the return spring are in the maximum compressed state. The moment the support rod 32 slides into the forward through slot 421, the tip 33 of the cross-shaped ejector pin 3 extends instantly to the outside of the tip hole 41 under the elastic force of the main spring, thus shattering the glass. At this time, the return spring is always in a compressed state, and it will continuously provide an elastic force to the top shell 4 to push it out of the mounting cavity 1. When the shattering action is completed, the user releases the force, and when the external force applied to the outer shell 2 disappears, the return spring will push the top shell 4 out of the mounting cavity 1, so that it returns to its original position. The support rod 32 located inside the forward through slot 421 will be forcibly rotated and slid into the interior of the rear through slot 422 under the action of the arc end 424, and will be held by the ejector end 423, so that the entire structure returns to its initial state for the next use.

[0041] The instantaneous impact force of the cross-shaped ejector pin 3 is determined by the spring force coefficient and compression of the main spring. In this embodiment, it is sufficient to ensure that the instantaneous impact force of the cross-shaped ejector pin 3 is ≥150N to shatter the glass. Of course, the main spring can be replaced as needed to change its spring force coefficient, thereby increasing or decreasing the instantaneous impact force of the cross-shaped ejector pin 3, for example, making the instantaneous impact force of the cross-shaped ejector pin 3 200N or greater.

[0042] like Figure 6 As shown, as an extension of this embodiment, a cutting blade 5 can also be provided on the outer casing 2 for cutting the seat belt of a car or other items in an emergency. The solution is to provide a notch in the body of the outer casing 2 and then embed and fix the cutting blade 5 within the notch. Simultaneously, to facilitate lighting in emergency situations, this embodiment can also provide an LED lighting device 6 at the other end of the outer casing 2. This LED lighting device 6 consists of a battery built into the outer casing 2 and an LED light connected to the outer casing 2 and electrically connected to the battery. Since the structure of the LED light is conventional technology, it will not be described in detail in this embodiment.

[0043] As described above, this utility model can be implemented well.

Claims

1. A reciprocating window breaker, characterized in that, It mainly consists of an outer shell (2) with an internal mounting cavity (1), a top shell (4) located inside the mounting cavity (1) and capable of reciprocating along its inner wall, a cross-shaped ejector pin (3) located between the top shell (4) and the mounting cavity (1), a main spring, and a return spring; a tip hole (41) for the tip (33) of the cross-shaped ejector pin (3) to extend and retract is provided at the top of the top shell (4), and a drive groove (42) is provided on each of the left and right side walls of the top shell (4); a return hole (11) is provided at the bottom of the mounting cavity (1), and a U-shaped groove (21) is provided on each of the left and right side walls of the outer shell (2); the tip (33) of the cross-shaped ejector pin (3) faces the tip hole (41) of the top shell (4), and its tail end passes through the return hole (11) and is positioned outside the mounting cavity (1) by a fixing member (34); the main spring is located inside the mounting cavity (1) and is used to hold the cross-shaped ejector pin (3). The reset spring is located inside the mounting cavity (1) and is used to hold the top shell (4).

2. The reciprocating window breaker according to claim 1, characterized in that, The cross-shaped ejector pin (3) includes a main pin rod (31) and a support rod (32) vertically connected to it. The two ends of the support rod (32) are located in the drive grooves (42) on the left and right sides of the top shell (4) respectively, and can slide along the groove wall of the drive groove (42).

3. A reciprocating window breaker according to claim 2, characterized in that, The drive groove (42) is composed of a front through groove (421), a rear through groove (422), a top holding end (423) of the upper groove wall provided on the side wall of the top shell (4) for connecting the front through groove (421) and the rear through groove (422), and an arc-shaped end (424) of the lower groove wall provided on the side wall of the top shell (4) for connecting the front through groove (421) and the rear through groove (422).

4. A reciprocating window breaker according to any one of claims 1 to 3, characterized in that, Two or more guide grooves (12) are provided on the inner side wall of the mounting cavity (1), and guide ribs (43) are provided on the outer side wall of the top shell (4) in a number and position that match the guide grooves (12). When the top shell (4) is built into the interior of the mounting cavity (1), the guide ribs (43) are embedded in the interior of the guide grooves (12) and can slide back and forth along the groove wall.

5. A reciprocating window breaker according to claim 4, characterized in that, The U-shaped groove (21) is U-shaped in general, and a drive support rod (32) and a drive surface (211) for rotating the entire cross-shaped ejector pin (3) are provided on the groove wall facing the rear through groove (422).

6. A reciprocating window breaker according to claim 4, characterized in that, The fixing member (34) is a blocking ring integrally formed or fixedly connected with the main needle rod (31). At the bottom of the mounting cavity (1), there is also a bypass hole (13) that communicates with the backflow hole (11). The diameter of the bypass hole (13) is slightly larger than the diameter of the blocking ring, and the diameter of the backflow hole (11) is slightly smaller than the diameter of the blocking ring.

7. A reciprocating window breaker according to claim 4, characterized in that, A cutting blade (5) is also provided on the outer casing (2).

8. A reciprocating window breaker according to claim 4, characterized in that, An LED lighting device (6) for illumination is also provided on the other end of the housing (2).

9. A reciprocating window breaker according to claim 4, characterized in that, The instantaneous impact force of the cross-shaped pin (3) is ≥150N.

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