A window breaking device

Abstract

The present invention specifically relates to a window smashing device, belonging to the field of automotive safety technology. It is proposed in view of the defect that existing in-vehicle escape tools cannot be found in time in case of danger, resulting in passengers missing the escape time. It includes a smashing device body arranged in the stress release area of the door glass. The smashing device body is always inside the door. By triggering the smashing device body, the overall compressive stress balance of the glass is destroyed. The present invention creates a labor-saving and fast escape opportunity for passengers by arranging a smashing device inside the car door.

Description

Technical Field:

[0002] The present invention belongs to the technical field of automotive safety, and particularly relates to a window smashing device. Background Art:

[0004] With the rapid development of the automotive industry, the focus of people's attention on automobiles has shifted from the power performance of automobiles to the safety protection performance of automobiles. Currently, the safety protection of automobiles mainly includes protection devices composed of airbags, seat belts, etc. and alarm devices composed of anti-rear-end collision alarms, etc. These protection devices and alarm devices are all designed to prevent personal accidents during vehicle driving. Especially in the past thirty years, the extensive use of active safety devices (such as anti-lock braking system ABS, acceleration slip regulation ASR, etc.) and passive safety devices (such as airbags) in automobiles has greatly improved the driving safety of automobiles. Nevertheless, the number of casualties caused by traffic accidents globally still accounts for a relatively large proportion. In recent years, the proportion of accidents where people die due to a vehicle falling into water has been increasing year by year. The main reason is that the engine automatically shuts off, making the electric windows unable to be opened, and at the same time, the doors cannot be opened due to the influence of the pressure difference inside and outside the vehicle. Moreover, there is no safety hammer equipped in the vehicle, or the safety hammer is placed in the trunk. During the chaotic search process or due to panic, people are unable to smash the window glass, thus missing the best escape time. In addition, since tempered glass is a type of safety glass, it has excellent compressive performance and has additional stress on its surface during production. When tempered glass is impacted, the stress will resist the external force. Therefore, most existing automotive glasses use high-strength tempered glass. During the processing, the cut glass sheets are sent into a glass tempering furnace for heating and softening, and then the surface of the tempered glass forms a compressive stress protection layer through uniform cooling. However, according to the stress distribution of tempered glass, the strength of tempered glass gradually decreases from the center to the periphery. Therefore, the four corners and edges of the glass are the weakest, that is, the stress release areas. If the tip of a hammer is used to strike, the huge pressure at the contact point will cause the tempered glass to crack. Although it is only a local hammer strike, the original overall stress distribution of the tempered glass is damaged, thus extending into a large area of network cracks. At this time, just give a gentle kick, and the glass will break open a large opening. This is why the corners of the window need to be hammered during bus escape. For cars, when the window is closed, the weakest four corners and edge parts of the window are inside the window frame of the door body, and the exposed part is the strongest part. Therefore, for this reason, when the vehicle is flooded and window smashing for escape is needed, the hard and airtight window becomes the biggest hidden danger to safe escape. Therefore, when a vehicle falls into water, it becomes particularly important for passengers to quickly, conveniently, and safely evacuate from the vehicle using the emergency escape tools in the vehicle. Summary of the Invention:

[0006] In order to overcome the defect that existing in-vehicle escape tools cannot be found in time in case of danger, resulting in passengers missing the escape time, the present invention provides a window smashing device, which creates a labor-saving and fast escape opportunity for passengers by arranging a smashing device inside the vehicle door.

[0007] The technical solution adopted by the present invention is as follows: A window smashing device, comprising: a smashing device body arranged in the stress release area of the door glass, the smashing device body is always inside the door body, and by triggering the smashing device body, the overall compressive stress balance of the glass is destroyed.

[0008] Preferably, the smashing device body includes a smashing hole opened in the stress release area of the glass and a trigger cooperating with the smashing hole.

[0009] Preferably, the trigger is fixed in the smashing hole, and the moving direction of the trigger is in the same plane as the glass. By starting the trigger, it squeezes the smashing hole towards the two side edges of the glass and makes it break.

[0010] Preferably, the trigger is a telescopic rod, and a trigger switch for controlling the movement of the telescopic rod is arranged on the inner side of the door body. By triggering the trigger switch, the telescopic rod is started to extend towards the two sides of the glass.

[0011] Preferably, the telescopic rod is an electric telescopic rod, the trigger switch is used to control the on-off between the telescopic rod and the power supply, and the power supply is an external power supply device.

[0012] Preferably, the smashing hole is oval, the trigger is a blasting ball, the blasting ball is composed of two slidably matched shells, and the sliding direction of the shells is in the same plane as any side of the glass. A water passing hole communicating with the cavity is opened on the blasting ball, and a catalyst that generates high-temperature flue gas when encountering water is filled inside the blasting ball.

[0013] Preferably, the water passing hole is arranged towards the ground direction.

[0014] Preferably, a moisture-proof sheet is wrapped around the outer periphery of the catalyst.

[0015] Preferably, the smashing hole is non-circular, the trigger is inserted into the smashing hole, the trigger is a control rod with a non-circular boss on the outer wall, and the outer contour of the boss matches the inner diameter shape of the smashing hole. A trigger hole is opened on the inner side of the door body, and the control rod is located between the trigger hole and the smashing hole. When the trigger hole, the smashing hole and the control rod are coaxial, an auxiliary tool is used to rotate the control rod, so that the outer diameter of the control rod squeezes the smashing hole and makes it break.

[0016] Preferably, the crushing hole is circular, and the trigger is a control rod with a conical front end. A trigger hole is provided on the inner side of the door body. When the control rod is coaxial with the crushing hole, the front end of the control rod passes through the trigger hole and inserts into the crushing hole. By knocking the end of the control rod, the crushing hole is squeezed and broken by the outer diameter of the control rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention cleverly utilizes the characteristic that the stress at the four corners and edges of tempered glass is the weakest after processing. A crushing hole is reserved at the lower edge of the automotive glass, and the crushing device body is installed in the crushing hole. By triggering the crushing device, the crushing hole is squeezed and broken, thereby destroying the overall stress distribution of the glass and making the glass form a large-area network crack, creating the best escape opportunity for the passengers.

[0019] 2. The crushing device designed by the present invention uses simple structures such as telescopic rods, blasting balls, non-circular crushing holes, and control rods of various structures. Through simple operations such as expansion, rotation, and knocking, the crushing hole is broken, thereby destroying the overall stress of the glass. Moreover, the operation is simple and fast, the effect is stable, and the safety is high. Description of the drawings:

[0021] Figure 1 is a schematic structural diagram of the crushing device of the present invention installed in the door body;

[0022] Figure 2 is Figure 1 a schematic diagram of the inner side of the middle door body;

[0023] Figure 3 is Figure 1 another telescopic rod structure at A in

[0024] Figure 4 is Figure 3 a schematic structural diagram of the telescopic rod in

[0025] Figure 5 is a schematic structural diagram of the crushing device in Embodiment 2;

[0026] Figure 6 is Figure 5 a front view of the blasting ball in

[0027] Figure 7 is Figure 6 a bottom view of

[0028] Figure 8 is Figure 6 an explosion diagram of

[0029] Figure 9 is Figure 6 a sectional view of

[0030] Figure 10 It is a position relationship diagram after the control rod and the glass are assembled in Embodiment 3;

[0031] Figure 11 It is a schematic structural diagram of the control rod in Embodiment 3;

[0032] Figure 12 It is a schematic structural diagram of another control rod in Embodiment 4;

[0033] Wherein: 1 door body, 2 glass, 21 fixing holes, 22 breaking holes, 3 glass lifter, 31 glass bracket, 32 driving mechanism, 4 glass guide rail, 510 telescopic rod, 511 trigger switch, 520 blasting ball, 521 moisture-proof sheet, 522 catalyst, 523 water through hole, 530 control rod, 531 trigger hole, 532 positioning block, 533 positioning hole. Specific implementation manners:

[0035] Embodiment 1

[0036] As Figure 1 and Figure 2 shown, the door of an existing automobile includes a door body 1 and door accessories. The door accessories are installed inside the door body 1. The door accessories include a glass 2 and a glass lifter 3. By controlling the glass lifter 3, the glass 2 is lifted and lowered in the direction provided by the glass guide rail 4 inside the door body 1. For the convenience of description, in this embodiment, a fork-arm type glass lifter is taken as an example for introduction.

[0037] The glass lifter 3 includes a glass bracket 31 and a driving mechanism 32. The glass bracket 31 supports the bottom of the glass 2. Two fixing holes 21 are symmetrically arranged on the glass 2. The glass bracket 31 fixes the glass 2 on the glass bracket 31 through bolts passing through the fixing holes 21. The driving mechanism 32 is used to drive the glass bracket 31 to drive the glass 2 to move up and down.

[0038] The present invention discloses a window breaking device, which includes a breaking device main body. At least one breaking hole 22 is opened in the stress release area of the glass 2 (i.e., the four corners and edges of the glass 2), and the breaking device main body is matched with the breaking hole 22. Since reprocessing the tempered glass will cause the tempered glass to burst due to sudden stress change, the breaking hole 22 needs to be processed and reserved before the glass 2 is tempered. Preferably, the breaking hole 22 is always inside the door body 1, and the breaking hole 22 is circular or non-circular. In this embodiment, the breaking hole 22 is located on the side far from the two fixing holes 21 as an example for introduction, but the position of the breaking hole 22 is not limited thereto, but is selected according to the structure of the breaking device.

[0039] The main body of the smashing device includes a trigger and a trigger switch 511. The trigger is a telescopic rod 510. Both ends of the telescopic rod 510 are fixed on the inner wall edge of the smashing hole 22 through fixing seats, and the telescopic direction of the telescopic rod 510 is in the same plane as the edge of the glass 2. The trigger switch 511 is embedded inside the door body 1 to facilitate the rider to trigger the movement of the telescopic rod 510. Preferably, the telescopic rod 510 is an electric telescopic rod, and the trigger switch 511 is used to control the on-off between the power supply and the electric telescopic rod. The power supply is an external power supply device electrically connected to the trigger switch 511, such as a battery.

[0040] In addition, in addition to being placed inside the smashing hole 22, the telescopic rod 510 can also be fixed outside the smashing hole 22 according to its different structures. As Figure 3 and Figure 4 described, there are two smashing holes 22 arranged at intervals. Connecting rods are respectively provided at both ends of the telescopic rod 510, and the ends of the connecting rods are fixed on the smashing holes 22 by bolts. When the telescopic rod 510 is started, the same breaking effect can be achieved.

[0041] Working process:

[0042] Both ends of the telescopic rod 510 are fixed to the smashing hole 22. When the car falls into the water, the engine automatically shuts off, causing the electric windows to close completely and unable to be opened. At this time, the door body 1 cannot be opened due to the influence of the pressure difference inside and outside the car. The rider only needs to start the trigger switch 511. After the telescopic rod 510 is powered on, it continuously extends and breaks the smashing hole 22 by continuous extrusion. The overall stress distribution of the glass 2 is damaged, thus forming a large-area network of cracks. Finally, the rider only needs to give a gentle kick, and the glass 2 will break open a large opening, thereby obtaining an escape opportunity.

[0043] Embodiment 2

[0044] In this embodiment, the structure of the main body of the smashing device in Embodiment 1 is further improved.

[0045] As Figures 5 to 9As shown, the crushing hole 22 is oval-shaped, and the main body of the crushing device is fixed in the crushing hole 22. It includes a trigger, and the trigger is an explosive ball 520. The inside of the explosive ball 520 is a hollow cavity. There is a water passage hole 523 opened on the explosive ball 520 and communicating with the hollow cavity. Preferably, the water passage hole 523 is arranged in the direction towards the ground. There is a catalyst 522 in the hollow cavity. During daily use, in order to avoid the water flowing into the door body 1 triggering the main body of the crushing device accidentally on rainy days or when washing the car, in this embodiment, preferably, a moisture-proof sheet 521 is provided inside the explosive ball 520, and the moisture-proof sheet 521 wraps around the outer periphery of the catalyst 522. By setting the moisture-proof sheet 521, the moisture or water droplets that accidentally enter the explosive ball 520 are adsorbed, so that the water entering cannot contact the catalyst 522, thereby reducing the probability of misoperation. The catalyst 522 is composed of chemical powders or particles that will undergo a violent chemical reaction when encountering water and can rapidly release high temperature and gas. The chemical powders or particles are not limited to being composed of the following components: calcium oxide and aluminum powder, or metallic potassium, or metallic sodium, etc. As long as the components contained in the catalyst 522 can achieve the purpose of making the housing move in a set direction and squeezing and breaking the crushing hole 22 when encountering water, the specific components of the catalyst 522 are not listed one by one.

[0046] Preferably, in order to minimize the energy required for the explosive ball 520 to explode and achieve the best explosion effect, in this embodiment, the main explosion direction of the explosive ball 520 is in the same plane as that at the glass 2. Therefore, the explosive ball 520 is composed of two shells that are slidably matched, and the moving direction of the shells during explosion is in the same plane as that at the glass 2.

[0047] Working process:

[0048] The explosive ball 520 is fixed in the crushing hole 22. This embodiment is more applicable to the situation where after the car falls into water, the engine automatically shuts off, the electric windows are completely closed and cannot be opened, and at the same time, when the door body 1 cannot be opened due to the influence of the pressure difference inside and outside the car, the water outside continuously seeps into the door body 1 through the gaps. When the water level inside the door body 1 rises to the position where the main body of the crushing device is located, the water enters the inner cavity of the explosive ball 520 from the water passage hole 523. After wetting the moisture-proof sheet 521, the energy generated by contacting the catalyst 522 quickly pushes the two shells of the explosive ball 520 to both sides. When the explosive ball 520 expands beyond the inner diameter of the crushing hole 22, the explosive ball 520 squeezes the crushing hole 22 and breaks it, and the overall stress distribution of the glass 2 is damaged, thus forming a large-area network of cracks. Finally, the passenger only needs to give a gentle kick, and the glass 2 will break open a large opening, and then an escape opportunity can be obtained. In addition, since the main body of the crushing device is in contact with water, the heat energy released after its chemical reaction is absorbed by the water. Therefore, while the main body of the crushing device destroys the overall stress of the glass 2, it will not pose a new safety threat to the external environment (i.e., the door body and the passengers).

[0049] Example 3

[0050] In this example, the structure of the main body of the crushing device in Example 1 is further improved.

[0051] As shown in Figure 2 , Figure 10 and Figure 11 , the crushing hole 22 is non-circular. In this example, the square crushing hole 22 is taken as an example for introduction. The main body of the crushing device includes a trigger hole 531 opened on the door body 1 and a trigger. The trigger hole 531 is circular. The trigger is located in the crushing hole 22. The trigger is a control rod 530. The control rod 530 includes a circular rod body and a boss provided on the outer periphery of the front part of the rod body. The boss matches the inner diameter shape of the crushing hole 22. In this example, a root nut is used as the control rod 530, and the root of the root nut is the boss, which always cooperates with the crushing hole 22 on the glass 2. In order to facilitate the rotation of the control rod 530, a knob for rotating the control rod 530 is provided on the inner side of the door body 1. However, due to the setting of this knob, the probability of the trigger being accidentally triggered will increase. For this reason, in this example, a positioning block 532 is provided on the rear end face of the control rod 530. Through the plug-in cooperation of the positioning block 532 and the knob, the rotation of the control rod 530 can be facilitated. In addition, a non-circular positioning hole 533 can be machined on the end face of the positioning block 532. Through the cooperation of an external auxiliary tool and the positioning hole 533, the rotation of the control rod 530 is realized. In this example, the hexagonal positioning hole 533 is taken as an example, and the rotation of the control rod 530 is realized through the cooperation of the external auxiliary tool hex key and the positioning hole 533. By controlling the rotation of the control rod 530 in two different ways, the flexibility of implementation can be improved, and an additional opportunity for self-rescue is provided for the passengers.

[0052] In addition, during the up and down movement of the glass 2, in order not to affect the stability of the control rod 530 after being inserted into the crushing hole 22, in this example, a through hole is opened on the glass bracket 31 that supports the glass 2. The front part of the control rod 530 passes through the glass bracket 31 and the glass 2 at the same time, and the circular rod body part of the control rod 530 is rotatably matched with the glass bracket 31.

[0053] Working process:

[0054] When the glass 2 is in the fully closed state, the positioning hole 533 on the end face of the control rod 530 is coaxially arranged with the trigger hole 531. Insert the hex key or the knob into the trigger hole 531, and make plug-in cooperation with the positioning hole 533. Rotate the hex key or the knob to make the control rod 530 rotate. During the rotation process, the crushing hole 22 is deformed and cracked under force. The deformed and cracked crushing hole 22 destroys the overall stress of the glass 2, thereby forming a large-area network crack.

[0055] Example 4

[0056] In this example, the structure of the main body of the crushing device in Example 3 is further improved.

[0057] As Figure 12 shown, in this example, the crushing hole 22 is designed to be circular, and the control rod 530 is a rod with a conical front end. When in use, after inserting the front end of the control rod 530 into the crushing hole 22, continuously strike the rear end of the control rod 530, so that the outer wall of the front end of the control rod 530 continuously squeezes the crushing hole 22 and causes it to break, thereby achieving the purpose of destroying the overall stress of the glass 2.

[0058] Example 1, Example 3 and Example 4 are applicable to any situation where the electric window cannot be opened due to the automatic engine shutdown and the door body 1 cannot be opened either, and it is not limited to the situation of vehicle falling into water. Example 2 is more applicable to the situation of vehicle falling into water.

[0059] The above are only the preferred specific embodiments of the present invention. These specific embodiments are all different implementation manners based on the overall concept of the present invention, and the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A window smashing device, the window including glass, the glass (2) being lifted and lowered in the direction provided by a glass guide rail (4) within a door body (1) through a glass bracket (31), characterized in that, Comprising: A breaking device body disposed in the stress release area of the glass (2) of the door body (1). The breaking device body is always inside the door body (1). By triggering the breaking device body, the overall compressive stress balance of the glass (2) is destroyed. The breaking device body includes a breaking hole (22) opened in the stress release area of the glass (2) and a trigger cooperating with the breaking hole (22). The trigger is fixed in the breaking hole (22), and the moving direction of the trigger is in the same plane as the glass (2). By starting the trigger, it squeezes the breaking hole (22) towards the two side edges of the glass (2) and makes it break. The breaking hole (22) is non-circular. The trigger is inserted into the breaking hole (22). The trigger is a control rod (530) with a non-circular boss on its outer wall, and the outer contour of the boss matches the inner diameter shape of the breaking hole (22). A trigger hole (531) is opened on the inner side of the door body (1), and the control rod (530) is located between the trigger hole (531) and the breaking hole (22). A through hole is opened on the glass bracket (31). The front part of the control rod (530) passes through the through hole and the glass (2) at the same time, and the circular rod part of the control rod (530) is rotationally matched with the glass bracket (31). When the trigger hole (531), the breaking hole (22) and the control rod (530) are coaxial, an external auxiliary tool is used to rotate the control rod (530) so that the outer diameter of the control rod (530) squeezes the breaking hole (22) and makes it break.

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