An emergency door opening assembly

Abstract

The application provides a vehicle door emergency opening and closing assembly, which comprises an emergency opening and closing device, a pull wire and a door lock, and the emergency opening and closing device is connected with the door lock through the pull wire. The emergency opening and closing device is arranged on an inner trim panel of a vehicle door, and a shell is embedded in the inner trim panel; a handle assembly is arranged on the top of the shell and connected with the shell; a trigger assembly is arranged in the shell and connected with the shell; and an oscillating arm assembly is fixed on one side of the shell and matched with the trigger assembly. When a user pulls the handle assembly, a handle sliding column on the handle assembly drives the trigger assembly connected with the handle assembly to slide, a trigger sliding column on the trigger assembly slides from a first section of a sliding groove of the oscillating arm assembly to a second section of the sliding groove, so that the pull wire connected with the oscillating arm assembly slides and pulls the door lock fixedly connected with the pull wire to realize an emergency unlocking operation. When the electric control unlocking switch of the vehicle fails and the vehicle door cannot be opened, the user can manually operate the emergency opening and closing device to open the vehicle door, so as to realize the emergency escape of the people in the vehicle and the like.

Description

Technical Field

[0001] This invention relates to a vehicle door lock assembly, and more particularly to a vehicle door emergency switch device. Background Technology

[0002] An emergency unlocking device, also known as an emergency door opening device, is a device used to manually open a vehicle door in abnormal situations, when the door cannot be opened electrically, or in case of an emergency. Existing emergency unlocking devices are exposed, traditional switches, which are easily operated by children. Accidental operation can affect driving safety. Due to their poor safety, insufficient functionality, and inconvenience in emergency situations, they no longer meet vehicle safety requirements.

[0003] The modern automotive industry is undergoing rapid development with the advancement of science and technology. New processes, materials, and technologies are widely used, especially the fusion of electronic technology and traditional mechanics, propelling the industry towards automation and intelligence. To maintain aesthetics, many electric vehicles have eliminated the traditional internal door latch, replacing it with a smaller and more convenient electric release button for unlocking. However, in the event of a circuit malfunction, manual mechanical unlocking is still required. Therefore, there is an urgent need for a novel emergency switch device with a concealed function to address the issue of manual mechanical unlocking of the doors when the electric unlock fails, while also maintaining an aesthetically pleasing design. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a door emergency switch assembly, which adds an emergency switch to the interior door trim panel of the vehicle. When the user pulls the emergency switch, the door lock is unlocked by a mechanical cable.

[0005] To achieve the above and other related objectives, the present invention provides a vehicle door emergency switch assembly, including an emergency switch device, a pull cable, and a door lock, wherein the emergency switch device is connected to the door lock via the pull cable.

[0006] The emergency switch device is located on the interior panel of the door. The emergency switch device includes a housing, a handle assembly, a trigger assembly, and a swing arm assembly. The housing is embedded in the interior panel.

[0007] The handle assembly is located on the top of the housing and is connected to the housing;

[0008] The trigger assembly is located inside the housing and is connected to the housing;

[0009] The swing arm assembly is fixed to one side of the housing and cooperates with the trigger assembly;

[0010] When the user pulls the handle assembly, the handle slide on the handle assembly causes the trigger assembly connected to the handle assembly to slide. The trigger slide on the trigger assembly slides from the first section of the slide groove of the swing arm assembly to the second section of the slide groove, causing the pull cable connected to the swing arm assembly to slide and pull the door lock fixedly connected to the pull cable to achieve an emergency unlocking operation.

[0011] In one embodiment of the present invention, the housing is integrally formed, fixedly connected to the interior trim panel, and does not protrude from the edge of the interior trim panel.

[0012] In one embodiment of the present invention, the handle assembly includes a handle, a handle pivot, and a handle slide pin, the handle slide pin being fixed to the handle; the handle pivot is fixedly connected to the housing and passes through a handle through hole at the lower part of the handle, so that the handle can pivot around the handle pivot.

[0013] In one embodiment of the present invention, the trigger assembly includes a trigger, a trigger shaft, and a trigger slide, the trigger slide being fixed to the trigger; the trigger shaft is fixedly connected to the housing and passes through a trigger through hole on the trigger, so that the trigger can pivot around the trigger shaft.

[0014] In one embodiment of the present invention, a spring is provided on the trigger shaft, and the spring is sleeved on the trigger shaft; one end of the spring is fixed inside the housing, and the other end is located on the upper part of the first side of the trigger.

[0015] In one embodiment of the present invention, a trigger groove is provided between the first side of the trigger and the second side of the trigger, and the handle slide passes through the trigger groove and can slide within the trigger groove.

[0016] In one embodiment of the present invention, the swing arm assembly includes a swing arm and a swing arm pivot, and a ball head of the pull wire fixedly connected to the pull wire is disposed in the ball head through hole of the swing arm; the pivot through hole on the swing arm passes through the swing arm pivot, so that the swing arm can pivot around the swing arm pivot.

[0017] In one embodiment of the present invention, a swing arm slide groove is provided on the side of the swing arm near the housing, the swing arm slide groove includes a first section of the slide groove and a second section of the slide groove; the housing has a housing notch groove at the position corresponding to the swing arm slide groove.

[0018] In one embodiment of the present invention, the trigger slide of the trigger assembly passes through the housing notch on the housing and extends into the swing arm slide groove of the swing arm assembly, and slides from the first section of the slide groove to the second section of the slide groove under the action of the trigger; when the emergency switch assembly is in the pre-unlocked state of the door, the trigger slide is located in the first section of the slide groove, and when the emergency switch assembly is in the emergency unlocked state, the trigger slide is located in the second section of the slide groove.

[0019] In one embodiment of the present invention, a press indicator button is provided on the upper part of the first side of the handle. The user presses the press indicator button to make the second side of the handle tilt upward. The user pulls the second side of the handle to drive the handle to pivot around the handle pivot axis, so that the handle slide pin connected to the handle slides in the trigger slide groove on the trigger. This drives the trigger to pivot around the trigger pivot axis, so that the trigger slide pin connected to the trigger slides from the first section of the slide groove on the swing arm to the second section of the slide groove. When the trigger slide pin enters the second section of the slide groove, the swing arm pulls the pull cable connected to it, so that the pull cable pulls the door lock to unlock.

[0020] As described above, the emergency door switch assembly of the present invention has the following beneficial effects:

[0021] The emergency door switch assembly of the present invention features a pressing feature at one end of the emergency switch. When a finger presses this area, the other end of the emergency switch tilts up. This tilted portion of the switch travels without activating the cable; only by continuing to press the tilted end can the cable be activated to unlock the door. This achieves a smooth appearance of the emergency switch inside the door, matching the surrounding surface design. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the internal structure of the emergency switch device of the present invention.

[0023] Figure 2 This is a schematic diagram showing the internal structure of the emergency switch device of the present invention in the pre-unlocked state.

[0024] Figure 3 This is an exploded perspective view of the emergency switch device of the present invention.

[0025] Figure 4 This is a partial exploded perspective view of the emergency switch device of the present invention.

[0026] Figure 5 This is a perspective view showing the pre-unlocked state of the emergency switch device of the present invention after the housing has been removed.

[0027] Figure 6This is a perspective view showing the emergency unlocking state of the emergency switch device of the present invention after the housing has been removed.

[0028] Figure 7 This is a perspective view of the vehicle door emergency switch assembly of the present invention.

[0029] Figure 8 for Figure 1 Installation diagram.

[0030] Figure 9 This is a schematic diagram showing the vehicle door emergency switch assembly and the interior panel of the vehicle door after assembly.

[0031] Component designation explanation

[0032] Emergency switch device 1, housing 11, handle positioning hole 12, trigger positioning hole 13, housing notch 14, housing first side 15, housing second side 16;

[0033] Handle assembly 2, handle 21, press indicator button 22, handle pivot 23, handle slide 24, handle through hole 25, first side of handle 26, second side of handle 27, slide positioning hole 28;

[0034] Trigger assembly 3, trigger 31, trigger pivot 32, trigger slide 33, spring 34, trigger slide groove 35, trigger through hole 36, trigger first side 37, trigger second side 38;

[0035] 4. Swing arm assembly; 41. Swing arm; 42. Rotary shaft through hole; 43. Ball head through hole; 44. Swing arm slide groove; 45. Fastener; 46. Swing arm rotating shaft; 47. First section of slide groove; 48. Second section of slide groove.

[0036] 5. Guy wire liner 51. Guy wire sheath 52. Guy wire ball head 52;

[0037] Door lock 6, door lock ball joint 61;

[0038] Interior panel 7. Detailed Implementation

[0039] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0040] Please see Figures 1 to 9 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0041] Please see Figure 1 and Figure 7This invention provides a vehicle door emergency switch assembly for emergency unlocking of a vehicle door when electronic unlocking fails. The vehicle door emergency switch assembly includes an emergency switch device 1, a pull cable 5, and a door lock 6. The emergency switch device 1 and the door lock 6 are connected via the pull cable 5. The emergency switch device 1 is located on the interior trim panel 7 of the vehicle door; wherein, the emergency switch device 1 includes a housing 11, a handle assembly 2, a trigger assembly 3, and a swing arm assembly 4. The housing 11 is embedded within the interior trim panel 7; the handle assembly 2 is located on the top of the housing 11 and connected to the housing 11; the trigger assembly 3 is located inside the housing 11 and connected to the housing 11; the swing arm assembly 4 is fixed to one side of the housing 11 and cooperates with the trigger assembly 3. When the user pulls the handle assembly 2, the handle slide column 24 on the handle assembly 2 causes the trigger assembly 3 connected to the handle assembly 2 to slide. The trigger slide column 33 on the trigger assembly 3 slides from the first section 47 of the slide groove 4 to the second section 48 of the slide groove, causing the pull cable 5 connected to the slide arm assembly 4 to slide and pull the door lock 6 fixedly connected to the pull cable 5 to realize the emergency unlocking operation. The housing 11 is integrally formed by a mold and is fixedly connected to the interior trim panel 7. The connection method can be through positioning holes at both ends of the housing, connected to the interior trim panel 7 by fasteners; and the edge of the housing 11 does not protrude from the edge of the interior trim panel 7, so that the emergency switch assembly of the door achieves the characteristic of a concealed switch. Furthermore, ball joint grooves are provided on the emergency switch device 1 and the door lock 6 respectively, and the two ends of the pull cable 5 are respectively set in the ball joint grooves of the emergency switch device 1 and the door lock 5, so that the user triggers the emergency switch device 1, and then triggers the door lock 6 through the pull cable 5 to realize the emergency unlocking operation.

[0042] Combination Figure 2 and Figure 3The handle assembly 2 is located on the upper part of the housing 11. The handle assembly 2 includes a handle 21, a handle pivot 23, and a handle slide 24. The handle slide 24 is fixed within the slide positioning hole 28 of the handle 21. The handle slide 24 and the slide positioning hole 28 can be connected by interference fit, welding, or other suitable fixing methods. The handle pivot 23 is fixedly connected to the housing 11 through the handle positioning hole 12. This connection can also be made by interference fit, welding, or other suitable fixing methods. Simultaneously, the handle pivot 23 passes through the handle through hole 25 at the lower part of the handle 21, allowing the handle 21 to pivot along the handle pivot 23 on the upper part of the housing. A press indicator button 22 is provided on the upper part of the first side 26 of the handle. By pressing the press indicator button 21, the user can tilt the second side 27 of the handle upwards along the axial direction of the handle pivot 23. The trigger assembly 3 includes a trigger 31, a trigger pivot 32, and a trigger slide 33. The trigger slide 33 is fixed to the second trigger side 38 of the trigger 31. The connection method can be welding or other suitable methods. The trigger pivot 32 is fixedly connected to the housing 11 through the trigger positioning hole 13. The connection method can be interference fit, welding, or other suitable fixing methods. The trigger pivot 32 passes through the trigger through hole 36 at the bottom of the trigger 31, allowing the trigger 31 to pivot within the housing along the trigger pivot 32. A trigger groove 35 is provided between the first trigger side 37 and the second trigger side 38. The trigger groove 35 can be a through hole with an arc-shaped structure. The handle slide 24 fixed to the aforementioned handle 21 passes through the trigger groove 35 and can slide freely within it. The trigger pivot 32 is located on one side of the first trigger side 37 of the trigger 31. A spring 34 is provided on the trigger pivot 32, and the spring 34 is sleeved on the trigger pivot 32. Spring 34 is a conventional spring, with one end fixed to the bottom of housing 11 and the other end positioned at a suitable location on the upper part of the first side 37 of the trigger. When the user pulls handle 21, causing handle slide 24 to pull trigger 31, when the user releases handle 21, trigger 31 can be reset by spring 34.

[0043] Figure 4This is a structural diagram of the other side of the emergency switch assembly, showing the other side of the swing arm assembly 4 located on the housing 11. The swing arm assembly 4 includes a swing arm 41 and a swing arm pivot 46. A pull cable ball head 52, fixedly connected to the pull cable 5, is located within the ball head through hole 43 of the swing arm 41. The pivot through hole 42 on the swing arm 41 passes through the swing arm pivot 46, allowing the swing arm 41 to pivot around the pivot 46. A swing arm slide groove 44 is also provided on the side of the swing arm 41 near the housing 11. The swing arm slide groove 44 has a "7"-shaped structure, with its longitudinal section defined as the first section 47 of the slide groove, i.e., the pre-locked door state; and its transverse section defined as the second section 48 of the slide groove, i.e., the emergency unlocked state. The housing 11 also has a housing notch 14 adapted to the swing arm slide groove 44. The housing notch 14 can be an arc-shaped through hole or a "7"-shaped through hole. Among them, the swing arm pivot 46 is integrally formed by the housing 11 through a mold. The pivot through hole 42 on the upper part of the swing arm 41 passes through the swing arm pivot 46 and is connected to the housing 11, and is limited and fixed by fasteners 45. The connection method can be a thread provided in the swing arm pivot 46, or a riveting or other suitable connection method.

[0044] Combination Figure 5 and Figure 6 The trigger slide 33 of the trigger assembly 3 passes through the housing notch 14 on the housing 11 and extends into the swing arm slide groove 44 of the swing arm assembly 4. When the user presses the press indicator button 22 on the handle 21, the handle slide 24 drives the trigger 31 to slide through the trigger slide groove 35. When the user misoperates, i.e., the user only presses the indicator button 22, the door is in a pre-unlocked state. When the user presses the indicator button 22, which triggers the trigger 31, the trigger slide 33 moves from the bottom of the first section 47 of the swing arm slide groove 44 upwards under the action of the trigger 31, and the trigger slide 33 will not enter the second section 48 of the slide groove. When the user needs to unlock the door urgently, the user needs to continue pulling the second side 27 of the handle 21 after pressing the indicator button 22, and the trigger slide 33 will slide from the first section 47 of the slide groove to the second section 48 of the slide groove. When the emergency unlocking phase is triggered, when the trigger slide bar 33 enters the second section 48 of the slide groove, the swing arm 41 pulls the pull cable 5 connected to it, so that the pull cable 5 pulls the door lock 6 to unlock.

[0045] In a preferred embodiment of the present invention, combined with Figures 7 to 9The emergency switch assembly 1 is located on one side of the interior trim panel 7 and does not protrude from the edge of the interior trim panel 7, thus achieving a hidden handle for the emergency switch assembly 1, which combines aesthetics and practicality. When the user triggers the press indicator button 22, the second side 27 of the handle tilts upward. The user pulls the second side 27 of the handle, causing the handle 21 to pivot around the handle pivot 23, so that the handle slide 24 connected to the handle 21 slides in the trigger slide groove 35 on the trigger 31, causing the handle 21 inside the housing 11 to slide the trigger 31. The trigger slide 33 on the trigger 31 slides along the swing arm slide groove 44 and slides from the first section 47 of the slide groove to the second section 48 of the slide groove. When the trigger slide 33 slides into the second section 48 of the slide groove, the swing arm 41 on the swing arm assembly 4 also pivots along the swing arm pivot 46, causing the pull cable ball head 52 connected to the swing arm 41 to slide. The pull cable ball head 52 is fixedly connected to the pull cable 5; due to the sliding of the swing arm 41, the pull cable moves within the pull cable sheath 51. The other end of the pull cable 5 is fixedly connected to the door lock ball head hole 61 on the door lock 6. When the pull cable 5 is pulled, the door lock ball head hole 61 unlocks the lock cylinder structure of the door lock 6, realizing emergency unlocking of the car door.

[0046] This invention relates to an emergency switch device. A housing is embedded in a vehicle door trim panel. The first end of the housing has a trigger shaft and a handle shaft, with a spring mounted on the trigger shaft. The second end of the housing has a housing notch. A handle is located on the upper part of the housing, with a press indicator button on one side of the upper end. The handle shaft and handle are slidably connected, allowing the handle to rotate around the handle shaft and slide at the lower end. The trigger is located inside the housing, with its first end slidably connected to the trigger shaft and its second end having a trigger slide. The trigger slide moves within the housing notch, which precisely avoids the movement trajectory of the trigger slide. A trigger groove is also provided in the middle of the trigger. When the user presses the press indicator button and lifts the handle, then pulls the other end of the handle, the handle slide slides within the trigger groove, thereby pulling the trigger. Simultaneously, a swing arm is located outside the housing notch, with a pull cable ball head fixedly connected to a pull cable within a through hole at the upper end of the swing arm. When the trigger is pulled, the trigger slide column slides within the swing arm groove, causing the swing arm to rotate. Ultimately, this allows the handle to pull the trigger, which in turn drives the cable via the swing arm to unlock the door.

[0047] In summary, this invention provides a concealed emergency door switch assembly, housing the emergency switch device within the door trim panel. A spring is incorporated for trigger reset, which in turn resets the handle. The push-button indicator on the handle is designed as a recessed feature at one end. Through the two-stage operation of the handle, in the event of accidental activation or pre-unlocking, the handle actuates the trigger, moving only within the first segment of the swing arm groove without triggering the swing arm movement. When the second end of the handle is pulled, the sliding pin on the trigger enters the second segment of the swing arm groove, pulling the swing arm and causing the cable connected to the swing arm to pull the door lock, thus achieving emergency door unlocking. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A vehicle door emergency switch assembly, comprising an emergency switch device (1), a pull cable (5), and a door lock (6), wherein the emergency switch device (1) and the door lock (6) are connected via the pull cable (5), characterized in that, The emergency switch device (1) is located on the interior panel (7) of the door. The emergency switch device (1) includes a housing (11), a handle assembly (2), a trigger assembly (3) and a swing arm assembly (4). The housing (11) is embedded in the interior panel (7). The handle assembly (2) is located on the top of the housing (11) and is connected to the housing (11); The trigger assembly (3) is located inside the housing (11) and is connected to the housing (11); The swing arm assembly (4) is fixed to one side of the housing (11) and cooperates with the trigger assembly (3); When the user pulls the handle assembly (2), the handle slide (24) on the handle assembly (2) drives the trigger assembly (3) connected to the handle assembly (2) to slide. The trigger slide (33) on the trigger assembly (3) slides from the first section (47) of the slide groove of the swing arm assembly (4) to the second section (48) of the slide groove, so that the pull cable (5) connected to the swing arm assembly (4) slides and pulls the door lock (6) fixedly connected to the pull cable (5) to realize the emergency unlocking operation. The handle assembly (2) is configured such that when the user presses the first side (26) of the handle, the trigger assembly (3) drives the trigger slide (33) to slide in the first section (47) of the slide groove. In this state, the swing arm assembly (4) does not pull the pull cable (5), so that the emergency switch assembly is in the pre-unlocking state. The handle assembly (2) is also configured such that when the user continues to pull the second side (27) of the handle after pressing the first side (26), the trigger assembly (3) drives the trigger slide (33) to slide from the first section (47) of the slide groove to the second section (48) of the slide groove, thereby driving the swing arm assembly (4) to pull the pull cable (5), so that the door lock (6) fixedly connected to the pull cable (5) can perform an emergency unlocking operation.

2. The vehicle door emergency switch assembly according to claim 1, characterized in that: The housing (11) is integrally formed and is fixedly connected to the interior panel (7) without protruding from the edge of the interior panel (7).

3. The vehicle door emergency switch assembly according to claim 2, characterized in that: The handle assembly (2) includes a handle (21), a handle pivot (23) and a handle slide (24), the handle slide (24) being fixed to the handle (21); the handle pivot (23) is fixedly connected to the housing (11) and passes through the handle through hole (25) at the lower part of the handle (21), so that the handle (21) can pivot around the handle pivot (23).

4. The vehicle door emergency switch assembly according to claim 3, characterized in that: The trigger assembly (3) includes a trigger (31), a trigger pivot (32), and a trigger slide (33). The trigger slide (33) is fixed to the trigger (31). The trigger pivot (32) is fixedly connected to the housing (11) and passes through the trigger through hole (36) on the trigger (31), so that the trigger (31) can pivot around the trigger pivot (32).

5. The vehicle door emergency switch assembly according to claim 4, characterized in that: A spring (34) is provided on the trigger shaft (32), and the spring (34) is sleeved on the trigger shaft (32); one end of the spring (34) is fixed inside the housing (11), and the other end is located on the upper part of the first side (37) of the trigger.

6. The vehicle door emergency switch assembly according to claim 4, characterized in that: A trigger groove (35) is provided between the first side (37) and the second side (38) of the trigger, and the handle slide (24) passes through the trigger groove (35) and can slide within the trigger groove (35).

7. The vehicle door emergency switch assembly according to claim 6, characterized in that: The swing arm assembly (4) includes a swing arm (41) and a swing arm pivot (46). The ball head (52) of the pull wire (5) is fixedly connected to the pull wire (5) and is located in the ball head through hole (43) of the swing arm (41). The pivot through hole (42) on the swing arm (41) passes through the swing arm pivot (46), so that the swing arm (41) can pivot around the swing arm pivot (46).

8. The emergency door switch assembly according to claim 7, characterized in that: The swing arm (41) is provided with a swing arm groove (44) on the side near the housing (11). The swing arm groove (44) includes a first section (47) and a second section (48). The housing (11) has a housing notch (14) at the position corresponding to the swing arm groove (44).

9. The vehicle door emergency switch assembly according to claim 8, characterized in that: The trigger slide (33) of the trigger assembly (3) passes through the housing notch (14) on the housing (11) and extends into the swing arm slide groove (44) of the swing arm assembly (4). Driven by the trigger (31), it slides from the first section (47) of the swing arm slide groove (44) to the second section (48) of the slide groove. When the emergency switch assembly is in the pre-unlocked state of the door, the trigger slide (33) is located in the first section (47) of the slide groove. When the emergency switch assembly is in the emergency unlocked state, the trigger slide (33) is located in the second section (48) of the slide groove.

10. The vehicle door emergency switch assembly according to claim 9, characterized in that: The upper part of the first side (26) of the handle is provided with a press indicator button (22). The user presses the press indicator button (22) to make the second side (27) of the handle tilt upward. The user pulls the second side (27) of the handle to drive the handle (21) to pivot around the handle pivot (23), so that the handle slide (24) connected to the handle (21) slides in the trigger slide groove (35) on the trigger (31). The trigger (31) is driven to pivot around the trigger shaft (32), causing the trigger slide (33) connected to the trigger (31) to slide from the first section (47) of the slide groove on the swing arm (41) to the second section (48) of the slide groove; when the trigger slide (33) enters the second section (48) of the slide groove, the swing arm (41) pulls the pull cable (5) connected to it, causing the pull cable (5) to pull the door lock (6) to unlock.

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