Window breaking hammer for double-layer laminated glass

Abstract

The utility model discloses a window breaking hammer for double-layer laminated glass, which relates to the field of automobile safety instruments, and comprises a grab handle and a hammer head, the hammer head is provided with a tapered wedge-shaped part, the end part of the hammer head is provided with a conical tip, one side facing the grab handle is provided with a cutting structure for cutting a glue film, the glass is broken and punctured through the conical tip, so that the front section of the hammer head enters, and the glass is broken through the cutting structure. And then, the grab handle is rotated by taking the non-penetrating part of the hammer head as a fulcrum, and the tough middle adhesive film is efficiently cut by the cutting structure according to the slope lever principle, so that the escape hole is quickly formed. In addition, an auxiliary sharp corner structure can be arranged at the tail part of the hammer head to cooperatively destroy the adhesive film; and a safety belt cutting device and an anti-falling flange are integrated on the grab handle or the hammer head, so that the multifunctionality and the operation safety are enhanced. The window breaking device solves the key problem that a traditional window breaking device cannot effectively process a laminated glass middle film, and is particularly suitable for automobile emergency window breaking escape.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile safety instrument, concretely is a broken window hammer for double -layer laminated glass. BACKGROUND

[0002] With the development of automobile industry, especially the extreme pursuit of quietness of new energy vehicles, the application of double -layer laminated glass on the front windshield and side window has become the mainstream trend because of its excellent sound insulation, heat insulation and impact resistance. The double -layer laminated glass is usually composed of two layers of tempered glass bonded by a layer of high -strength polyvinyl butyral (PVB) or ionic interlayer (SGP) film.

[0003] However, this composite structure of "hard outside and soft inside" constitutes a new challenge in the emergency escape scene. At present, the mainstream automobile broken window device, such as impact type broken window hammer, its design principle is to stress the characteristics of ordinary tempered glass: the sharp hammer head made of hard alloy can produce extremely high local pressure in an instant, so that the stress balance of tempered glass is broken and the whole is broken into small particles. However, when such a broken window device is used to hit the double -layer laminated glass, although the tempered glass of the inner and outer layers can be easily broken, the PVB or SGP film of the middle layer can effectively bond the glass debris on both sides due to its high toughness, ductility and tensile strength, forming a "flexible mesh barrier" that is still structurally intact although it has been broken.

[0004] This barrier maintained by the film cannot automatically fall off and is extremely difficult to tear directly with hands, resulting in the inability to quickly form a large enough hole for passengers to escape. The existing broken window device is almost powerless to this barrier after impact, and this fatal defect will seriously delay the critical escape time, posing a serious safety hazard that needs to be addressed. INVENTION CONTENTS

[0005] In view of the problems existing in the prior art, the utility model provides a broken window hammer for double -layer laminated glass, which can effectively cut the film in the middle of the double -layer laminated glass after breaking, thereby quickly forming a complete hole for escape.

[0006] The technical scheme adopted by the utility model is as follows: a broken window hammer for double -layer laminated glass, comprising a handle and a hammer head, the hammer head is fixed to one end of the handle, the hammer head has a wedge-shaped part with gradually reduced size, the end of the wedge-shaped part is provided with a tapered tip, the side facing the handle is provided with an inclined surface, the inclined surface extends from the position close to the handle to the direction of the tapered tip, and a cutting structure for cutting the film is arranged on the inclined surface, so that when breaking the window, the tapered tip can first pierce the glass, and then the cutting structure on the inclined surface can contact and cut the film between the glasses.

[0007] Further, the cutting structure is a sawtooth or a cutting blade.

[0008] Further, the inclined surface is a flat surface or a concave arc surface.

[0009] Further, an auxiliary sharp corner structure is arranged on the side of the hammer head opposite to the handle and at the other end opposite to the tapered tip; the auxiliary sharp corner structure is configured to be able to pierce or cut the adhesive film when the handle is rotated with the contact position of the hammer head with the glass as a fulcrum after the tapered tip pierces the glass and the hammer head partially penetrates into the glass breakage.

[0010] Further, the tapered tip is made of a high-hardness metal material with a Rockwell hardness not lower than HRC 55.

[0011] Further, a cutting device for cutting a safety belt is arranged on the handle or the hammer head, and the cutting device comprises a guide clamping groove for guiding and clamping the safety belt, and a cutting blade is arranged on the inner side of the guide clamping groove.

[0012] Further, a anti-falling flange is integrally formed or fixedly connected downstream of the hand holding area on the handle.

[0013] Further, a anti-falling flange is integrally formed or fixedly connected downstream of the hand holding area on the handle, and the cutting device is arranged on the anti-falling flange.

[0014] The utility model discloses the beneficial effect lies in: the utility model discloses the integration design of hammer head tapered tip broken window, inclined surface sawtooth cuts glue, realizes the efficient breaking of double-layered laminated glass, and the function of the tapered tip, the inclined surface and the sawtooth is designed in cooperation, and two key actions of " smashing glass " and " cutting adhesive film " are integrated in a coherent operation process, and the operation steps in the emergency state are simplified without replacing the tool, and the reliability is improved, the force is concentrated in the sawtooth by setting the sawtooth on the hammer head and using the inclined surface lever principle, and the tough adhesive film can be easily and completely cut, at the same time, the compact broken window hammer structure realizes multifunction while guaranteeing the portability of the tool, and the safety belt cutting device and the anti-falling flange are integrated, and the practicability and operation safety in various emergency scenes are further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model.

[0016] Figure 2 It is Figure 1 It is the local enlarged view of A in the figure.

[0017] Figure 3 It is the structure schematic diagram of another view of the utility model.

[0018] Figure 4 is a broken window process schematic diagram using the broken window hammer of the utility model.

[0019] In the figure: handle 1, hammer head 2, inclined surface 21, auxiliary sharp corner structure 22, cone tip 3, cutting structure 4, cutting device 5, guide clamping groove 51, cutting edge 52, anti-falling flange 6. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the utility model, the following will be combined with the description of the drawings and the preferred embodiments to make a more comprehensive and detailed description of the utility model, but the protection scope of the utility model is not limited to the following specific embodiments.

[0021] As shown in Figure 1 and Figure 3 , the broken window hammer for double-layer laminated glass provided by the embodiment mainly consists of a handle 1 and a hammer head 2 fixedly connected to one end of the handle 1. The hammer head 2 is a wedge-shaped structure with gradually reduced size as a whole, which helps to be inserted into the glass break more easily when breaking the window.

[0022] At the end of the front part of the hammer head 2, a cone tip 3 for knocking and initial piercing of the glass is arranged. On the side of the hammer head 2 facing the handle 1, an inclined surface 21 is arranged. The inclined surface 21 extends from the position close to the handle 1 to the direction of the cone tip 3. On the inclined surface 21, a cutting structure 4 for cutting the adhesive film is arranged. In the embodiment, the cutting structure 4 is a sawtooth (as shown in Figure 1 ), which realizes efficient tearing and cutting by using multiple sharp teeth. In another preferred embodiment of the utility model, the cutting structure 4 can also be implemented as a continuous or intermittent cutting edge, which cuts by using a sharp edge.

[0023] In the embodiment, the inclined surface 21 can be preferably implemented as a plane to provide a stable support surface, or as a concave arc surface to better fit the adhesive film and enhance the cutting effect.

[0024] As shown in Figure 3 , on the side of the hammer head 2 opposite to the handle 1 and at the other end opposite to the cone tip 3, an auxiliary sharp corner structure 22 is arranged. When the hammer head 2 is partially inserted into the glass break and the handle 1 is rotated to pry with the contact part with the glass as the fulcrum, the auxiliary sharp corner structure 22 will be pressed down accordingly, thereby piercing or cutting the surrounding adhesive film, cooperating with the sawtooth on the inclined surface 21 to jointly expand the damage range to the adhesive film, and significantly improving the broken window efficiency.

[0025] In order to ensure that the cone tip 3 has sufficient strength and hardness to break the tempered glass, the cone tip 3 is preferably made of high-hardness metal material (such as high-carbon steel, alloy tool steel, etc.) with a Rockwell hardness not less than HRC 55.

[0026] As Figure 1 and Figure 2 shown, in the tail of the handle 1, integrated with a cutting device 5 for cutting the safety belt. The cutting device 5 is provided with a V-shaped or U-shaped guide slot 51 for quick card into and positioning the safety belt in emergency. In the inner side edge of the guide slot 51, inlayed or directly processed with sharp cutting edge 52, by pulling the window breaker can easily cut the safety belt. The setting position of the cutting device 5 is very flexible, can be adjusted according to the overall design needs. It can be set in the tail of the handle 1 (as Figure 1 shown), also can be set in the front end or middle of the handle 1, to facilitate the operation under different holding posture; in addition, it can also be directly set on the hammer head 2, to realize the further integration of function.

[0027] In order to further improve the safety of operation, prevent the hand from slipping off the handle 1 when pulling, an annular or block-shaped anti-slip flange 6 is integrally formed or fixedly connected on the handle 1, downstream of the normal hand holding area (i.e. close to the tail end). When performing the pulling action to expand the escape hole after breaking the window, the anti-slip flange 6 acts as a protruding physical barrier, effectively blocking the sliding trend of the palm along the handle 1 towards the tail direction, thereby preventing the operation failure or tool dropping caused by hand slipping. As a preferred scheme, the aforementioned cutting device 5 can be directly set on the anti-slip flange 6, making the structure more compact and the functional area concentrated.

[0028] The working principle of the utility model is as follows: as Figure 4 shown, in the emergency use of the window breaker, first hold the handle 1, use the cone tip 3 to hit the double-layer laminated glass, make its inner and outer glass broken. Then, push the front segment of the hammer head 2 into the broken hole, make the inclined plane 21 pass through the glass. At this time, take the contact part of the hammer head 2 and the glass as the fulcrum, rotate the handle 1, the serrations on the inclined plane 21 will be broken under the action of the lever. At the same time, the auxiliary sharp corner structure 22 will be pressed to the inside of the glass, further damaging the film. After the film is cut, a regular hole is formed, by pulling the handle 1 backward, the serrations can easily expand the hole, forming an escape channel. If the safety belt needs to be cut, the cutting device 5 at the tail can be used.

[0029] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A breakage hammer for double glazing, comprising a handle (1) and a hammer head (2), the hammer head (2) being fixed to one end of the handle (1), characterised in that: The hammer head (2) has a tapered wedge with a tapered tip (3) at one end, and a bevel (21) on the side facing the handle (1), the bevel (21) extending from a position close to the handle (1) to the tapered tip (3), and a cutting structure (4) for cutting the adhesive film is arranged on the bevel (21), so that when breaking the window, the tapered tip (3) can first pierce the glass, and then the cutting structure (4) on the bevel (21) can contact and cut the adhesive film between the glasses.

2. A breakage hammer for double glazing as claimed in claim 1, characterised in that: The cutting structure (4) is a sawtooth or a cutting blade.

3. A breakage hammer for double -pane glazing according to claim 1, characterized in that: The bevel (21) is a flat surface or a concave arc surface.

4. A breakage hammer for double -pane glazing according to claim 1, wherein: An auxiliary sharp corner structure (22) is arranged on the side of the hammer head (2) opposite to the handle (1) and at the other end opposite to the tapered tip (3), and the auxiliary sharp corner structure (22) is configured to pierce or cut the adhesive film when the handle (1) is rotated around the contact position of the hammer head (2) and the glass after the tapered tip (3) pierces the glass and the hammer head (2) partially penetrates the glass break.

5. A breakage hammer for double -pane glazing according to claim 1, wherein: The tapered tip (3) is made of a high-hardness metal material with a Rockwell hardness not less than HRC 55.

6. A breakage hammer for double glazing as claimed in any one of claims 1 to 5 wherein: A cutting device (5) for cutting the safety belt is arranged on the handle (1) or the hammer head (2), and the cutting device (5) includes a guide clamping groove (51) for guiding and clamping the safety belt, and a cutting blade (52) is arranged on the inner side of the guide clamping groove (51).

7. A breakage hammer for double glazing as claimed in any one of claims 1 to 5 wherein: An anti-disengagement flange (6) is integrally formed or fixedly connected downstream of the hand holding area on the handle (1).

8. A breakage hammer for double glazing as claimed in claim 6, characterised in that: An anti-disengagement flange (6) is integrally formed or fixedly connected downstream of the hand holding area on the handle (1), and the cutting device (5) is arranged on the anti-disengagement flange (6).

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