Glass forcible entry device capable of adjusting impact force and forcible entry method thereof

Abstract

The invention discloses a glass forcible entry device capable of adjusting impact force, and provides a technical scheme integrating labor-saving driving, impact energy adjustment and auxiliary functions in order to solve the problems that an existing forcible entry tool is strenuous in operation, insufficient in impact energy and single in function. According to the device, a lever driving mechanism is adopted to be matched with a ratchet assembly, multiple times of compression energy storage are achieved through a manual lever, the energy storage state is locked through a ratchet structure, and labor-saving operation and high-impact energy obtaining are achieved; the graded adjustment of the impact strength is realized by controlling the compression times; the adhesive film cutter and the dragging piece are integrated, and the'forcible entry-cutting-removing 'integrated operation capacity is formed. The glass breaking device is compact in structure and convenient to operate, solves the problem that a traditional breaking tool is low in efficiency when being used in a narrow space or for special crowds, is suitable for emergency breaking scenes of various types of glass, and is particularly suitable for laminated glass which is difficult to break.

Description

Technical Field

[0001] This invention relates to the field of emergency rescue tools, and in particular to an adjustable impact glass breaking device and its breaking method that integrates labor-saving energy storage, safe release and film cutting functions. Background Technology

[0002] Double-laminated glass, as a high-performance safety glass, has been widely used in new energy vehicles and high-end passenger vehicles. Its structure usually consists of two layers of tempered glass with a layer of PVB (polyvinyl butyral), SGP (ionic interlayer), or TPU (thermoplastic polyurethane elastomer) film sandwiched in between, which has excellent impact resistance, explosion protection, and adhesion properties.

[0003] However, these safety features can become significant obstacles to escape when a vehicle encounters emergencies such as falling into water, catching fire, or being deformed in a collision.

[0004] Existing research has shown that the impact energy required to shatter both layers of double-laminated glass simultaneously generally needs to be above 10J. For example, in his master's thesis "Experimental Study on Low-Voltage Impact Mechanical Properties of PVB Laminated Glass" published in June 2018 by Zhang Zongheng of South China University of Technology, pages 40-43 indicate that for double-laminated glass with a structure of 3mm glass + 1.14mm PVB film + 3mm glass, when the impact energy reaches 10.8J, both the front and back glass in the impact area will crack.

[0005] For example: The paper "Impact Response of Laminated Glass with Varying Interlayer Materials" published by Xiaowen Zhang et al. in the International Journal of Impact Engineering (2020), on pages 6 and 22, points out that for double-layered laminated glass with 2mm thickness on both sides and interlayer laminations of 1.52mm SGP, 0.38mm TPU + 1.52mm SGP + 0.38mm TPU, 1.52mm TPU, and 1.52mm PVB, when the impact energy reaches 10J, both the inner and outer layers of the double-layered laminated glass in all four structures rupture.

[0006] Under such an energy impact, although both the inner and outer panes of laminated glass may shatter, the excellent toughness and adhesive properties of the interlayer prevent the broken glass from separating and detaching, thus maintaining the structural integrity of the window and preventing the formation of an effective escape opening. Existing portable vehicle-mounted window-breaking tools are primarily designed for single-pane tempered glass. They lack the impact energy required to break laminated glass and also lack the ability to cut or tear the highly resilient interlayer. Therefore, they are difficult to use quickly to break laminated glass, presenting significant limitations for emergency escape.

[0007] Currently, the mainstream vehicle window breaking tools on the market include window breaker hammers and spring-loaded pin window breaker. Spring-loaded pin window breaker includes direct compression type and lever compression type, both designed for single-layer tempered glass. They have significant limitations when dealing with double-layered laminated glass. 1. Window breaker: Its effectiveness in breaking windows depends heavily on the weight and length of the window breaker, as well as the user's arm strength, striking angle, and operating space; When breaking a window during rescue operations outside a vehicle, the impact kinetic energy generated by a regular window breaker is insufficient to overcome the structural strength of laminated glass. It can only crack the outer layer of glass, while the inner layer remains intact due to the energy absorption effect of the interlayer film, making it impossible to break the window. While a specially designed heavy-duty window breaker can break through double-layered laminated glass by repeatedly striking it during rescue operations outside a vehicle, the effectiveness of breaking the window depends on the strength of the user. If the strength is insufficient, the heavy-duty window breaker will still be difficult to break the window, especially for women, the elderly, or those with weaker physical strength, as it is difficult to apply sufficient and precise impact force. When using a window breaker inside a vehicle, the limited space restricts the swinging motion, making it difficult even for a heavy-duty window breaker to break the double-glazed glass from inside the vehicle and create an effective escape route. Furthermore, when using a window breaker to break laminated glass, multiple strikes to the same point are required for complete penetration. However, the impact point is difficult to control when swinging the window breaker forcefully, making it impossible to accurately and repeatedly strike the same point on the window. Therefore, it is not possible to quickly penetrate the glass and create a hole, resulting in a decrease in window-breaking efficiency. Reducing the swing amplitude of the window breaker can improve the accuracy of the impact point, but the impact force is insufficient, and it is also impossible to quickly penetrate the glass and create a hole, which again leads to a decrease in window-breaking efficiency. When using a window breaker to forcefully strike a car window from the outside, the uncertainty of the impact point may cause the hammer head to penetrate the broken glass and enter the car's interior, potentially injuring the occupants. Whether used from outside or inside a vehicle, a window breaker will scatter shards of glass in all directions, potentially causing injury to the operator's eyes and skin.

[0008] 2. Direct compression spring-loaded pin window breaker: Energy is stored by pressing a spring and then released instantaneously, causing the striking pin to strike the glass. Direct compression window breakers suffer from low spring stiffness and insufficient energy storage, resulting in insufficient impact energy to penetrate double-layered laminated glass. The limited impact energy is quickly absorbed and dispersed by the interlayer, leading to a "strike without penetration," leaving only a small dent or crack in the outer glass. This type of window breaker cannot increase its impact energy by increasing spring stiffness. Based on an impact energy of 10J, even if the compression stroke is increased to 10mm (in reality, the compression stroke of a spring-loaded striking pin window breaker is only 6-7mm), the pressing force would need to be at least 2000 N (≈204 kgf), which is simply impossible for an average person.

[0009] 3. Lever Compression Type: Although it utilizes the lever principle to save effort, existing designs (such as US Patent US20030726661A) still have significant drawbacks: US Patent US20030726661A (expired) disclosed a lever-compression spring-loaded window breaker. This patented design uses a lever to compress and store energy in a spring, then releases the spring via a release button, pushing the striker head to break the glass. Theoretically, this patent could utilize a lever and a relatively small force to compress the spring, generating impact energy exceeding 10J. However, this window breaker has the following drawbacks: Human operation cannot generate sufficient impact energy: This patented window breaker can only compress the spring once using a lever before each break, and cannot accumulate impact energy through multiple compressions. To enable the breaker to break double-glazed glass, it must store enough energy to penetrate the glass in a single compression. Based on an impact energy of 10J, and considering friction and spring resistance leading to a 30% energy loss, the spring actually needs to store approximately 15J or more of energy. With a compression stroke of 10mm, a maximum compression force of 3000 N (approximately 306 kgf) is required. Using a lever with a magnification of 10, the maximum force required to operate the lever is 300 N (≈30.6 kgf), which is beyond the capabilities of ordinary human strength.

[0010] Lack of security interlock mechanism: The release button and lever of this patented window breaker do not have an interlocking function. When the spring is released, the impact rod may interfere with the lever, causing the lever to swing rapidly. This not only greatly reduces the impact force of the window breaker, but may also cause the user to be struck by the rapidly swinging lever, resulting in personal injury.

[0011] Lack of film cutting and residual glass dragging capabilities: When the impact energy reaches 10J or more, this patented window breaker can create one or more holes in double-layered laminated glass. However, the window glass still forms a whole under the action of the adhesive film. It is necessary to cut the glass and adhesive film between the holes to destroy the overall structure of the glass and then remove the glass from the window as a whole. This patented window breaker does not have the function of cutting the glass and adhesive film outside the holes, nor does it have the function of dragging and removing the remaining glass.

[0012] The impact force is fixed and cannot be adjusted. This patented window breaker cannot adjust the impact force according to the rescue scenario; it can only impact with the maximum fixed force. In scenarios where residual glass or tempered glass is broken, the impact force may be too great, causing residual glass or tempered glass to fly and injure people. Summary of the Invention

[0013] To address the shortcomings of existing technologies, the present invention aims to provide a glass breaking device that is labor-saving, provides high impact energy with adjustable force, and has a film cutting function. This device achieves labor-saving energy storage and multi-level adjustment through lever drive and ratchet structure, and integrates a film cutter and a dragging component, realizing a unified 'breaking-cutting-removal' operation. This solves the problem that existing window breakers cannot quickly clean up residual glass to create an effective escape route after breaking laminated glass.

[0014] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable impact glass breaking device includes: a housing, an impact rod, an energy storage component, a lever drive mechanism, and a locking release mechanism; The shell is a rigid structure with a hollow interior. It has an open guide cylinder extending axially at the top and a positioning rod extending axially fixed at the bottom center. The front end of the impact rod is provided with an impact head, and the rear end extends into the housing through the open guide tube. The impact rod can move back and forth along the axis inside the guide tube. The energy storage component includes an energy storage spring and a spring drive. The spring drive is a hollow cylinder with one end closed and the other end open. Its internal cavity accommodates the upper end of the energy storage spring. Its outer peripheral wall is provided with a plurality of ratchet teeth (321) distributed along the axial direction. The rear end of the impact rod is fixedly connected to the closed end of the spring drive. The lever drive mechanism includes a lever handle, a swing pawl, and a first elastic reset member. The root of the swing pawl is hinged to the end of the lever handle, and the two are mounted on the upper end of the housing via the same pivot. The housing has a first opening at the position corresponding to the swing pawl, and the swing pawl can pass through the first opening to enter the internal space of the housing and engage with the ratchet teeth. The elastic reset element is disposed between the root of the swing pawl and the end of the lever handle; The hinge between the swing pawl and the lever handle is provided with a transmission engagement structure. The swing pawl is biased by an elastic reset member so that in its natural state, the swing pawl and the lever handle maintain a relatively fixed angle to prepare for power transmission. The transmission and engagement structure is configured such that: a limiting engagement surface is provided at the hinge point between the swing pawl and the lever handle; the swing pawl is biased by an elastic reset member, such that in its natural state, the limiting engagement surface of the swing pawl abuts against the limiting engagement surface of the lever handle; wherein, the limiting engagement surface is configured to transmit driving force to the swing pawl through surface contact when the lever handle is moved toward the impact head, thereby pushing the spring drive member to move and compress the energy storage spring; the swing pawl is further configured to: when the lever handle is reset and subjected to the reverse force of the ratchet, be able to rotate relative to the lever handle to disengage from the abutting state of the limiting engagement surface, thereby sliding past the ratchet.

[0015] Specifically, when the lever handle is in a folded state and parallel to the housing, the engaging end of the swing pawl is completely disengaged from the ratchet tooth in space and is in a position where they do not contact each other. The locking and releasing mechanism includes an energy storage spring locking hook, a release handle, and a second elastic reset component; The energy storage spring locking hook and the release handle are integrally formed or fixedly connected, and are hinged to the inner side wall of the lower end of the housing through the intermediate hinge point to form a lever structure. The energy storage spring locking hook is configured to hook the ratchet to lock the spring drive element; The release handle is configured such that when pressed by an external force, it drives the energy storage spring locking hook to rotate around the intermediate hinge point, causing the energy storage spring locking hook to disengage from the ratchet, thereby releasing the lock on the energy storage spring. The elastic reset member is configured to: provide a biasing force to the energy storage spring locking hook so that it maintains the locking tendency of the ratchet, and allow the energy storage spring locking hook to be lifted and slid over by the ratchet when the spring drive compresses the energy storage spring, and then reset and snap into the next ratchet surface; The housing has a second opening at the same position as the release handle; The lever handle is provided with a release lever inside, which can pass through the second opening to press the release handle; The hinge position of the energy storage spring locking hook is in the same longitudinal plane as the hinge axis of the lever handle, so that the release lever can only pass through the second opening and press against the release handle to release the lock and release the energy storage spring (31) when the lever handle is in a folded state and parallel to the housing. At this time, under the action of the lever handle, the pawl engagement end of the swing pawl is completely disengaged from the ratchet on the outer peripheral wall of the spring drive, ensuring that the ratchet will not impact the swing pawl when the energy storage spring is released, thus preventing the swing pawl from driving the lever handle to swing in the opposite direction and preventing injury to the user.

[0016] Furthermore, the device is also equipped with a film cutter, which is located at the tail end of the housing away from the impact head; the film cutter includes an arc-shaped fork arm and a straight fork arm, with an arc-shaped variable-width receiving groove formed between the two forks arm for accommodating the glass to be cut; the arc-shaped fork arm has a first cutting edge at least on its inner edge, and the arc-shaped fork arm has an arc-shaped structure that protrudes away from the straight fork arm; the straight fork arm is a long strip structure.

[0017] Preferably, the outer edge of the straight fork arm is provided with a second cutting edge for cutting the glass film.

[0018] Preferably, the contours of the first cutting edge and / or the second cutting edge are straight, wavy, or serrated.

[0019] Furthermore, the device is also equipped with a dragging member, the extension direction of which is perpendicular or substantially perpendicular to the axial direction of the housing; the dragging member includes a hook structure for hooking glass fragments; the dragging member is configured such that after the adhesive film is cut, the hook structure hooks the edge of the glass fragment, and under a pulling operation along the axial direction of the housing, a pulling force perpendicular to the glass plane is applied to the glass fragment to remove it.

[0020] Preferably, the straight fork arm can also serve as a towing component, and the second cutting edge also serves as the hook structure for hooking broken glass fragments.

[0021] The present invention also provides a method for breaking glass using the above-mentioned glass breaking device, including an impact force adjustment step: by repeatedly reciprocating the lever handle, the swing pawl pushes the spring drive to compress the energy storage spring step by step, and the energy storage spring locking hook is locked in the corresponding ratchet position, thereby setting the required impact energy level; when the lever handle returns to parallel with the housing, the release lever presses the release handle, unlocks and releases the energy storage spring to drive the impact rod and impact head to strike the glass. Beneficial effects

[0022] Compared with the prior art, the present invention has the following significant advantages: 1. Effortless operation: Through the amplification effect of the lever and the multiple compressions of the energy storage spring, ordinary people can use relatively small force to obtain enough energy to break laminated glass; 2. Adjustable impact force levels: The lever-driven mechanism reciprocates and uses a swinging pawl to push the spring drive component to compress the energy storage spring in stages. The impact energy level can be flexibly set according to the rescue needs to adapt to demolition scenarios of different intensities.

[0023] 3. Extremely high operational safety: The locking and releasing mechanism is designed with a unique "reset linkage + disengagement protection" logic.

[0024] Preventing accidental activation: The release lever can only be aligned and pressed when the lever handle is fully reset to be parallel to the housing. This mandatory position dependence effectively prevents accidental triggering during the energy storage process. Anti-rebound: When resetting and unlocking, the swing pawl completely disengages from the ratchet of the spring drive, ensuring that the ratchet will not impact the swing pawl in the opposite direction when the energy storage spring is released, thereby eliminating the risk of the lever handle swinging violently and ensuring the safety of the user in all aspects.

[0025] 4. Multifunctional integration: It integrates a film cutter and a drag link. After impact demolition, the curved fork arm and straight fork arm can be used to cut the PVB film without changing tools, and the drag link can be used to remove glass fragments, which greatly improves rescue efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention (the lever handle is in the folded release energy storage spring state). Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention (the lever handle is in the state of compressing the energy storage spring). Figure 3 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention (the lever handle is in the reset state during the compression process). Figure 4 This is an exploded view of the parts in Embodiment 1 of the present invention; Figure 5 for Figure 1 A partially enlarged structural diagram of the middle lever handle and the swing pawl (the limiting fit relationship is shown above); Figure 6 for Figure 1 A partially enlarged structural diagram of the middle lever handle and the swing pawl (the limiting fit relationship will be shown later). Figure 7 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 8 for Figure 7A partially enlarged structural diagram of the medium-adhesive film cutter; Figure 9 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention. 10-Housing shell, 11-Opening guide cylinder, 12-Positioning rod, 13-First opening, 14-Second opening;

[0027] 20 - Impact rod, 21 - Impact head; 30 - Energy storage component, 31 - Energy storage spring, 32 - Spring drive component, 321 - Ratchet; 40-Lever drive mechanism, 41-Lever handle, 411-Release lever, 42-Swing pawl, 43-First elastic reset element (torsion spring). 50-Locking and releasing mechanism, 51-Storage spring locking hook, 52-Release handle, 53-Second elastic reset element (coil spring); 60-Film cutter, 61-Arc-shaped fork arm, 611-First cutting edge, 62-Straight fork arm, 621-Second cutting edge, 63-Receiving groove; 70 - Towing component, 71 - Hook structure. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0029] like Figures 1 to 6 As shown, this embodiment provides a glass breaking device with adjustable impact force, which mainly includes a housing 10, an impact rod 20, an energy storage component 30, a lever drive mechanism 40, and a locking and releasing mechanism 50.

[0030] The housing 10 serves as the supporting frame for the entire device and is made of metal or high-strength engineering plastic. Its interior is hollow to accommodate the moving parts. The top of the housing 10 is provided with an open guide cylinder 11 to guide the impact rod 20 to perform axial reciprocating motion; a positioning rod 12 is fixed at the center of the bottom to provide guidance and positioning for the energy storage spring 31.

[0031] The front end of the impact rod 20 is equipped with a conical impact head 21 (preferably made of hard alloy) for concentrating impact force to break the glass, and the rear end extends into the interior of the housing through the open guide tube 11 on the housing, and can move back and forth along the axis inside the guide tube 11.

[0032] The energy storage assembly 30 consists of an energy storage spring 31 and a spring drive member 32. The energy storage spring 31 is sleeved on the outer periphery of the positioning rod 12, with its lower end abutting against the bottom surface of the housing 10. The spring drive member 32 is a hollow cylinder with one end closed and the other end open. Its internal cavity accommodates the upper end of the energy storage spring 31, and its outer peripheral wall is provided with multiple axially distributed ratchet teeth 321. The rear end of the impact rod 20 is fixedly connected to the closed end of the spring drive member 32. When the spring drive member 32 moves backward, it compresses the energy storage spring 31, thereby storing the energy required for demolition.

[0033] The lever drive mechanism 40 includes a lever handle 41, a swing pawl 42, and a first elastic reset member 43 (a torsion spring in this embodiment). The lever handle 41 and the swing pawl 42 are hinged to the upper end of the housing 10 via the same pivot. An opening is provided in the housing 10 at the position corresponding to the swing pawl 42, allowing the swing pawl 42 to pass through the opening and enter the interior space of the housing 10 to engage with the ratchet 321.

[0034] The first elastic reset member 43 is disposed between the root of the swing pawl 42 and the end of the lever handle 41. The hinge between the swing pawl 42 and the lever handle 41 is provided with a transmission engagement structure (specifically manifested as a limiting engagement surface). In the natural state, the biasing force of the first elastic reset member 43 causes the limiting engagement surface of the swing pawl 42 to abut against the limiting engagement surface of the lever handle 41, maintaining a relatively fixed angle.

[0035] When the user pulls the lever handle 41 toward the impact head 21, the driving force is transmitted to the swing pawl 42 through the surface contact of the limiting mating surface, which in turn pushes the spring drive member 32 to move backward to compress the energy storage spring 31. When the lever handle 41 returns to its original position, the swing pawl 42 is subjected to the reverse force of the ratchet 321, rotates relative to the lever handle 41 and compresses the first elastic reset member 43, thereby sliding past the ratchet 321 to achieve unidirectional drive. In particular, when the lever handle 41 is in a folded state and parallel to the housing 10, the engaging end of the swing pawl 42 is completely disengaged from the ratchet 321 in space and is in a non-contact position.

[0036] The locking and releasing mechanism 50 is used to lock and release the stored energy. It includes an energy storage spring locking hook 51, a release handle 52, and a second elastic reset member 53 (a coil spring in this example). The energy storage spring locking hook 51 and the release handle 52 are integral structures, mounted on the inner side wall of the lower end of the housing 10 through an intermediate hinge point, forming a lever structure.

[0037] The second elastic reset member 53 provides a biasing force to the energy storage spring locking hook 51, ensuring that it always maintains the tendency to hook the ratchet 321. When the energy storage spring 31 is compressed, the ratchet 321 pushes up the locking hook 51 and slides past it, after which the locking hook 51 resets and engages with the next ratchet surface, achieving step-by-step locking.

[0038] The housing 10 has an opening 14 at the same position as the release handle 52. A release lever 411 is provided inside the lever handle 41. The hinge position of the energy storage spring locking hook 51 is in the same longitudinal plane as the hinge axis of the lever handle 41. This arrangement ensures that the release lever 411 can only pass through the opening 14 and press against the release handle 52 when the lever handle 41 is folded and parallel to the housing 10, driving the energy storage spring locking hook 51 to rotate and disengage from the ratchet 321, thereby releasing the energy storage spring 31.

[0039] At this time, since the swing pawl 42 has disengaged from the ratchet 321, when the energy storage spring 31 releases and drives the impact rod 20 to hit the glass, the ratchet 321 will not impact the swing pawl 42 in the opposite direction.

[0040] This design can prevent accidental release of the energy storage spring 31 and also prevent the swinging pawl 42 from driving the lever handle 41 to swing in the opposite direction, thus avoiding the risk of accidental injury.

[0041] In this embodiment, the folding position of the lever handle 41 corresponds to the natural length position of the energy storage spring 31 (or the reset position after impact). This design makes the device compact in non-working state and without elastic preload, making it easy to store and carry. Example

[0042] like Figure 7 and Figure 8 As shown, this embodiment further integrates film cutting and glass removal functions based on embodiment 1.

[0043] The device is also equipped with a film cutter 60, which is located at the tail end of the housing 10 away from the impact head 21. The film cutter 60 includes an arc-shaped fork arm 61 and a straight fork arm 62.

[0044] The arc-shaped fork arm 61 has an arc-shaped structure that protrudes away from the straight fork arm 62, and its inner edge is provided with a first cutting edge 611. The straight fork arm 62 has a long strip structure, and its outer edge is provided with a second cutting edge 621. A variable-width receiving groove 63 is formed between the two forks to accommodate the glass to be cut.

[0045] Because the arc-shaped fork arm (61) has an outwardly protruding arc structure, while the straight fork arm (62) has a straight structure, the two work together to make the receiving groove (63) have a variable width shape that is wide in the middle and narrow at both ends. This variable width design is not only conducive to inserting the arc-shaped fork arm (61) into the back of the glass through the glass break, but also forms a lever relationship with the straight fork arm.

[0046] The outlines of the first cutting edge 611 and the second cutting edge 621 can be straight, wavy, or serrated.

[0047] The device described in this embodiment is also independently equipped with a drag member 70. The extension direction of the drag member 70 is perpendicular to the axial direction of the housing 10. The drag member 70 includes a hook structure 71 for hooking glass fragments.

[0048] When in use, after the impact demolition is completed, the arc-shaped fork arm 61 and the straight fork arm 62 are used to cut the PVB film, and then the independent drag bar 70 is used to hook the edge of the glass fragment for removal. Example

[0049] like Figure 9 As shown, this embodiment is another variation of embodiment 1, the main difference being the installation method of the film cutter 60 and the reuse of the dragging function.

[0050] The arc-shaped fork arm 61 and the straight fork arm 62 of the film cutter 60 are arranged laterally, that is, the plane where the fork arm is located is perpendicular or approximately perpendicular to the axial direction of the housing 10.

[0051] In this embodiment, the straight fork arm 62 also serves as a towing component 70, and the second cutting edge 621 also serves as a hook structure 71.

[0052] This horizontal layout makes the device more compact when stored, and the use of the straight fork arm 62 as a towing component reduces the number of parts, enabling integrated "dismantling-cutting-removal" operations and greatly improving rescue efficiency. In conjunction with Embodiments 1, 2, and 3, this invention details the specific structure and operation method of a glass breaking device that integrates energy storage, impact, cutting, and cleaning functions.

[0053] This method, through the cooperation of a lever-driven mechanism and a multi-functional tail assembly, achieves a one-stop operation from glass breaking to debris removal. The specific operating steps are as follows: 1. Energy storage and shock force regulation The operator first holds the housing and stores energy by repeatedly turning the lever handle. During the turning process, the limiting mating surface on the inner side of the lever handle and the limiting mating surface of the swing pawl are in close contact, forming a rigid transmission, which pushes the swing pawl to engage the ratchet on the spring drive component, thereby compressing the energy storage spring.

[0054] During this process, the energy storage spring locking hook will automatically engage with the corresponding ratchet position to prevent rebound. The operator can precisely adjust the level of impact energy by controlling the number of times the lever is operated, according to the dismantling requirements (such as glass thickness) and the amount of spring compression.

[0055] 2. Impact Release Once energy storage is complete, the operator returns the lever handle to its folded position parallel to the housing. At this point, the release lever inside the lever handle aligns with the release handle inside the housing. The operator simply needs to continue applying gripping force, and the release lever will press against the release handle, causing the energy storage spring locking hook to disengage from the ratchet.

[0056] The energy storage spring instantly releases its potential energy, propelling the impact rod and the impact head at the front end to strike the glass at high speed, completing the demolition operation. This design ensures that the swing pawl and ratchet completely disengage at the moment of release, preventing the handle from hitting the hand due to recoil and ensuring operational safety.

[0057] 3. Lever cutting with blade 1 (film cutting) After the glass breaks, the operator uses the film cutter at the rear of the device to process the tough PVB film. The curved fork arm is inserted into the back of the glass, and the straight fork arm is positioned in front, allowing the film to enter the receiving groove. Using the straight fork arm as a fulcrum, the operator forcefully turns the housing, utilizing the first cutting edge on the inner side of the curved fork arm to generate a powerful shearing force, cleanly severing the connection between the glass and the film.

[0058] 4. Cut the residual adhesive film with blade edge 2 (scraping). For areas with residual adhesive film at the edges or that are difficult to cut, the operator can push and pull the device back and forth along the glass surface. Using the second cutting edge on the outside of the straight fork arm, the operator can scrape the residual adhesive film back and forth like a scraper to thoroughly remove the adhesive.

[0059] 5. Drag and drop to clean up (remove debris) After cutting, the straight fork arm doubles as a towing device. The operator uses the second cutting edge (which then acts as a hook) to hook the sharp edge of the glass fragment and apply pulling force along the axis of the housing. Thanks to the device's stable structure, the heavy and sharp glass fragment is pulled out and removed as a whole, eliminating the need for rescuers to handle it by hand, greatly reducing the risk of cuts, and completing the entire operation from demolition to cleanup.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glass-breaking device with adjustable impact force, characterized in that, include: The housing (10) is a rigid structure with a hollow interior. Its top is provided with an axially extending open guide cylinder (11), and its bottom center is fixedly provided with an axially extending positioning rod (12). Impact rod (20), the front end of the impact rod (20) is provided with an impact head (21), and the rear end extends into the housing (10) through the open guide cylinder (11). The impact rod (20) can move back and forth along the axis inside the guide cylinder (11). Energy storage component (30), the energy storage component (30) includes energy storage spring (31) and spring drive component (32), the energy storage spring (31) is sleeved on the outer periphery of the positioning rod (12) and the lower end abuts against the bottom surface of the housing (10); the spring drive component (32) is connected to the rear end of the impact rod (20) and has a plurality of ratchet teeth (321) distributed along the axial direction on the outer peripheral wall. The lever drive mechanism (40) includes a lever handle (41), a swing pawl (42) and an elastic reset member (43). The root of the swing pawl (42) is hinged to the lever handle (41), and the two are mounted on the upper end of the housing (10) through the same pivot. The elastic reset member (43) is disposed between the root of the swing pawl (42) and the end of the lever handle (41); The hinge joint between the swing pawl (42) and the lever handle (41) is provided with a transmission engagement structure. The swing pawl (42) is biased by the elastic reset member (43) so that in the natural state, the swing pawl (42) and the lever handle (41) maintain a relatively fixed angle to prepare for power transmission. The housing (10) has an opening (13) at the position corresponding to the swing pawl (42), and the swing pawl (42) is configured to pass through the opening (13) and enter the interior space of the housing (10) to engage with the ratchet (321); The transmission and engagement structure is configured such that when the lever handle (41) is pulled toward the impact head, the driving force is transmitted to the swing pawl (42), thereby pushing the spring drive (32) to move to compress the energy storage spring (31). Specifically, when the lever handle (41) is in a folded state and parallel to the housing (10), the engaging end of the swing pawl (42) is completely disengaged from the ratchet tooth (321) in space and is in a position where they do not contact each other. The swing pawl (42) is also configured to rotate relative to the lever handle (41) to disengage from the power transmission state when the lever handle (41) is reset and subjected to the reverse force of the ratchet (321), thereby sliding over the ratchet (321). Locking release mechanism (50), the locking release mechanism (50) includes energy storage spring locking hook (51), release handle (52) and elastic reset member (53); The energy storage spring locking hook (51) and the release handle (52) are integrally formed or fixedly connected, and are hinged to the inner side wall of the lower end of the housing (10) through the intermediate hinge point to form a lever structure; The energy storage spring locking hook (51) is configured to hook the ratchet (321) to lock the spring drive (32). The release handle (52) is configured such that when pressed by an external force, it drives the energy storage spring locking hook (51) to rotate around the intermediate hinge point, so that the energy storage spring locking hook (51) disengages from the ratchet (321) to release the lock on the energy storage spring (31). The elastic reset member (53) is configured to: provide a biasing force to the energy storage spring locking hook (51) so that it maintains the locking tendency of the ratchet (321) and allow the energy storage spring locking hook (51) to be lifted and slid over by the ratchet (321) when the spring drive member (32) compresses the energy storage spring (31) to move, and then reset and snap into the next ratchet surface; The housing (10) has an opening (14) at the same position as the release handle (52). The lever handle (41) is provided with a release lever (411) on the inside, and the release lever (411) is configured to press the release handle (52) through the opening (14). The hinge position of the energy storage spring locking hook (51) and the hinge axis of the lever handle (41) are in the same longitudinal plane, so that the release lever (411) can only pass through the opening (14) and press against the release handle (52) to release the lock and release the energy storage spring (31) when the lever handle (41) is in a folded state and parallel to the housing (10). At this time, under the drive of the lever handle (41), the pawl (42) completely disengages from the ratchet (321) on the outer peripheral wall of the spring drive (32), ensuring that when the energy storage spring (31) is released, the ratchet (321) will not impact the pawl (42), thus preventing the pawl (42) from swinging in the opposite direction.

2. The glass breaking device according to claim 1, characterized in that: The impact head (21) is a tapered cemented carbide head.

3. The glass breaking device according to claim 1, characterized in that: The energy storage spring (31) is a helical spring or a disc spring.

4. The glass breaking device according to claim 1, characterized in that: The spring drive (32) is a hollow cylinder with one end closed and the other end open. Its internal cavity accommodates the upper end of the energy storage spring (31), and its outer peripheral wall is provided with a plurality of ratchet teeth (321) distributed along the axial direction. The rear end of the impact rod (20) is fixedly connected to the closed end of the spring drive (32).

5. The glass breaking device according to claim 1, characterized in that: The transmission and engagement structure includes a limiting engagement surface disposed at the hinge point between the swing pawl (42) and the lever handle (41); The limiting mating surface is configured such that the swing pawl (42) is biased by the elastic reset member (43) so that in the natural state, the limiting mating surface of the swing pawl (42) abuts against the limiting mating surface of the lever handle (41); The limiting mating surface is configured to transmit the driving force to the swing pawl (42) through surface contact when the lever handle (41) is pulled toward the impact head.

6. The glass breaking device according to claim 1, characterized in that: The elastic reset element (43) is a torsion spring, a helical spring, or a leaf spring.

7. The glass breaking device according to claim 1, characterized in that: The elastic reset element (53) is a torsion spring, a helical spring, or a leaf spring.

8. The glass breaking device according to claim 1, characterized in that: The device is also equipped with a film cutter (60), which is located at the tail end of the housing (10) away from the impact head (21); the film cutter (60) includes an arc-shaped fork arm (61) and a straight fork arm (62), and a receiving groove (63) for accommodating the glass to be cut is formed between the two fork arms. The arc-shaped fork arm (61) has at least a first cutting edge (611) on its inner edge, and the arc-shaped fork arm (61) has an arc-shaped structure that protrudes away from the straight fork arm (62). The straight fork arm (62) has a long strip structure.

9. The glass breaking device according to claim 8, characterized in that: The outer edge of the straight fork arm (62) is provided with a second cutting edge (621).

10. The glass breaking device according to claim 8 or 9, characterized in that: The cutting edge shape of the first cutting edge (611) and / or the second cutting edge (621) is one of straight, wavy or serrated.

11. The glass breaking device according to claim 8, characterized in that: The device is also equipped with a towing member (70), the extension direction of which is perpendicular or substantially perpendicular to the axial direction of the housing (10); the towing member (70) includes a hook structure (71) for hooking glass fragments. The dragging member (70) is configured to hook the edge of the glass fragment by the hook structure (71) after the adhesive film is cut, and to apply a pulling force perpendicular to the glass plane to remove the glass fragment by pulling operation along the axis of the housing (10).

12. The glass breaking device according to claim 11, characterized in that: The film cutter (60) is fixedly connected to the tail end of the housing (10), and the main body extension direction of the film cutter (60) is parallel to the axial direction of the housing (10); the drag member (70) is independently set at the base of the film cutter (60) or at the root of the straight fork arm (62); The drag member (70) extends laterally from the main structure parallel to the housing (10), perpendicular or approximately perpendicular to the axial direction of the housing (10), forming a hook structure (71) to hook the glass fragment.

13. The glass breaking device according to claim 11, characterized in that: The film cutter (60) is fixedly connected to the tail end of the housing (10), and the overall installation orientation of the film cutter (60) is horizontal, that is, the plane or extension direction of the arc-shaped fork arm (61) and the straight fork arm (62) is directly perpendicular or approximately perpendicular to the axial direction of the housing (10); wherein, the extension direction of the straight fork arm (62) is perpendicular or approximately perpendicular to the axial direction of the housing (10), so that the straight fork arm (62) also serves as the dragging part (70), and the second cutting edge (621) also serves as the hook structure (71).

14. The glass breaking device according to claims 12 to 13, characterized in that: The connection between the film cutter (60) and the tail end of the housing (10) can be integrally formed, welded, riveted, glued, or a non-removable connection made by anti-loosening fasteners.

15. The glass breaking device according to claims 12 to 13, characterized in that: The film cutter (60) is mounted on the tail end of the housing (10) via a detachable connection assembly; the detachable connection includes one of the following: threaded connection, snap-fit ​​connection, magnetic locking, or plug-in structure.

16. A method for breaking glass using the glass-breaking device as described in claim 1, characterized in that, Includes the following steps: By repeatedly turning the lever handle (41), the swing pawl (42) pushes the spring drive (32) to compress the energy storage spring (31) step by step, and locks it in the corresponding ratchet (321) position by the energy storage spring locking hook (51), thereby setting the required impact energy level; When the lever handle (41) is reset to be parallel to the housing (10), the release lever (411) presses the release handle (52), unlocks and releases the energy storage spring (31) to drive the impact rod (20) and impact head (21) to strike the glass.

17. A method for breaking glass using the glass-breaking device as described in claim 8 or 9, characterized in that, Including the film cutting step: After the glass is broken, the arc-shaped fork arm (61) of the film cutter (60) is inserted into the back of the glass break so that the glass to be cut is located in the receiving groove (63). Using the straight fork arm (62) as a fulcrum, the housing (10) is turned, and the first cutting edge (611) is used to cut the glass and the intermediate film; When the straight fork arm (62) is provided with a second cutting edge (621), the residual adhesive film is cut by reciprocating pushing and pulling of the housing (10) using the second cutting edge (621).

18. A method for breaking glass using the glass-breaking device as described in any one of claims 11 to 13, characterized in that, Including the wreckage removal steps: After the film is cut, the edge of the glass fragment is hooked by the hook structure (71) of the dragging member (70), and the housing (10) is pulled in a direction perpendicular to the glass plane to remove the glass fragment.

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