Out-of-car door lock function verification device

Abstract

The application provides a vehicle outer door lock function verification device, and belongs to the technical field of automobile detection. The device solves the problem that the existing whole vehicle fire test cannot verify the functionality of the door lock. The vehicle outer door lock function verification device comprises a fixing seat, a supporting seat, a swing arm and a clamping seat for connecting a vehicle door outer handle arranged on the swing arm. The clamping seat is located between the fixing seat and the supporting seat. One end of the swing arm is hinged to the supporting seat. The fixing seat is provided with a driving assembly for driving the swing arm to rotate around the hinge point of the fixing seat and the supporting seat. The device can simulate the action of a rescuer manually opening the vehicle door from outside, so as to meet the need of detecting whether the vehicle door can be opened from the outside, and further verify the functionality of the door lock.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile detection and relates to a vehicle exterior door lock function verification device. Background Art

[0002] New energy vehicles (NEVs) use unconventional automotive fuels as their power source, integrating advanced technologies in vehicle power control and drive to create advanced technical principles, new technologies, and new structures. The rapid development and widespread adoption of electric vehicles in recent years has been accompanied by frequent safety incidents, particularly electric vehicle fires, most of which are linked to the batteries they carry.

[0003] Therefore, automakers are paying close attention to the safety of new energy vehicles. Building on the GB / T31467.3 battery pack external fire test (short-term fire of 130 seconds), they have successively proposed requirements for longer-term fire tests for battery packs (e.g., 20 minutes) and entire vehicles (e.g., one hour). For example, a Chinese patent discloses a battery pack and entire vehicle fire test device [authorization publication number CN217112217U] to meet the requirements for entire vehicle fire testing.

[0004] The existing fire test process lacks a detection device to determine whether the vehicle doors can be opened from the outside, making it impossible to verify the functionality of the door locks. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an exterior door lock function verification device that can detect whether a vehicle door can be opened from the outside.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The device for verifying the function of the exterior door lock includes a fixed seat, a support seat, a swing arm, and a card seat provided on the swing arm for connecting the exterior door handle. The card seat is located between the fixed seat and the support seat. One end of the swing arm is hinged to the support seat. The fixed seat is provided with a driving component for driving the swing arm to rotate around the hinge point between it and the support seat.

[0008] During installation, fix the fixing base and the support base at appropriate positions on the outside of the vehicle body. For example, when testing the front door, the fixing base can be fixed to the front side of the rear door, and the support base can be fixed to the front door. When testing the rear door, the fixing base can be fixed to the outside of the rear pillar, and the support base can be fixed to the rear door. The card seat is clamped on the outer door handle to form a lever structure with the swing arm. After turning on the drive assembly, the swing arm can be driven to swing, generating an outward pulling force on the outer door handle to test whether the side door can be opened from the outside, thereby verifying the functionality of the door lock.

[0009] In the above-mentioned vehicle exterior door lock function verification device, a cantilever is hinged on the fixed seat, the center line of the cantilever rotating around the fixed seat is parallel to the center line of the swing arm rotating around the support seat, a slider is provided on the cantilever, and the end of the swing arm away from the support seat is hinged to the slider, and the driving assembly is used to drive the slider to move along the length direction of the cantilever.

[0010] The driving assembly is arranged on the cantilever, and the driving assembly drives the slider to move along the length direction of the cantilever, thereby driving the swing arm to swing, generating an outward pulling force on the outer door handle, and the cantilever swings at the same time.

[0011] In the above-mentioned vehicle exterior door lock function verification device, a guide cavity extending along its length direction is provided in the cantilever, and the slider is slidably arranged in the guide cavity. The side of the cantilever facing the support seat has a slot extending along the length direction and connected to the guide cavity, and the end of the swing arm away from the support seat passes through the slot and is hinged to the slider.

[0012] In the above-mentioned vehicle exterior door lock function verification device, the driving assembly includes a screw rotatably installed in the cantilever, a nut slidably arranged in the guide cavity, and a motor for driving the screw to rotate. The screw extends along the length direction of the cantilever, the nut cooperates with the screw thread, the slider is sleeved on the screw, and the nut is connected to the slider.

[0013] The nut and the guide cavity are circumferentially limited. A motor mounted on the cantilever drives the lead screw, which in turn drives the nut and, in turn, the slider within the guide cavity. The lead screw-nut transmission pair, consisting of the lead screw and nut, has a high transmission ratio and can generate sufficient pulling force to effectively drive the slider within the guide cavity.

[0014] In the above-mentioned vehicle exterior door lock function verification device, the motor is located at one end of the cantilever away from the fixing seat; the nut is located between the motor and the slider, and the slider is connected to the nut via a tension spring.

[0015] The tension spring can buffer the tension on the slider so that the tension it receives gradually changes from small to large. When the door lock fails and the door cannot be opened, the drive component will not be damaged, which is conducive to reuse.

[0016] In the above-mentioned vehicle exterior door lock function verification device, the slider is slidably sleeved on the cantilever.

[0017] In the aforementioned exterior door lock function verification device, the drive assembly includes a pneumatic or hydraulic cylinder located at the end of the cantilever arm away from the fixed base. The piston rod of the pneumatic or hydraulic cylinder is connected to the slider. When the piston rod of the pneumatic or hydraulic cylinder contracts, it drives the slider to slide along the length of the cantilever arm, thereby causing the swing arm to swing.

[0018] In the aforementioned exterior door lock function verification device, the drive assembly includes a linear motor mounted on a cantilever, the mover of which is connected to a slider. The linear motor extends along the length of the cantilever. When the linear motor is in operation, it drives the slider to slide along the length of the cantilever, thereby causing the swing arm to swing.

[0019] The driving component may also be an elastic member.

[0020] In the above-mentioned vehicle exterior door lock function verification device, the card seat is provided with two cards for extending to the upper and lower sides of the vehicle exterior door handle respectively, and a card pin inserted between the two cards. A clearance groove for accommodating the vehicle exterior door handle is formed between the two cards, and the card pin restricts the vehicle exterior door handle from escaping from the clearance groove.

[0021] When in use, buckle the card holder on the outside door handle, and then insert the pin between the two ears to effectively connect the card holder to the outside door handle. The clearance groove can not only accommodate the outside door handle, but also provide it with sufficient movement space when opening the car door.

[0022] In the above-mentioned vehicle exterior door lock function verification device, the swing arm is provided with a slide groove extending along its length direction, the card seat is slidably arranged in the slide groove, and a positioning structure is provided between the swing arm and the card seat for positioning the card seat after the card seat moves into place.

[0023] The position of the seat can be moved according to the position of the door handle outside the car, so that it can adapt to the doors of different models and is highly practical.

[0024] In the above-mentioned vehicle exterior door lock function verification device, the positioning structure includes several positioning grooves provided on the card seat, a socket and a positioning pin provided on the swing arm, and several of the positioning grooves are distributed along the length direction of the swing arm. The positioning pin inserted into the socket can be inserted into the positioning groove provided opposite thereto.

[0025] In the above-mentioned vehicle exterior door lock function verification device, the inner end of the positioning pin has a limit stop edge, the socket has a limit step, and a spring is sleeved on the positioning pin, one end of the spring rests on the limit stop edge, and the other end rests on the limit step.

[0026] When the locating pin is not subject to external force, it is inserted into the corresponding locating slot under the action of the spring. To move the card holder, the locating pin is pulled outward, causing the inner end of the locating pin to disengage from the locating slot. The spring is compressed and deformed, allowing the card holder to move. When the card holder is moved into place, the locating pin is released, and the spring force causes the locating pin to move inward and insert into the corresponding locating slot, locking the card holder.

[0027] In the above-mentioned vehicle exterior door lock function verification device, the fixing base and the supporting base are both provided with magnetic blocks. The fixing base and the supporting base are both mounted on the vehicle body surface via the magnetic blocks, and are easy to assemble and disassemble without damaging the vehicle body structure.

[0028] In the above-mentioned vehicle exterior door lock function verification device, hinge ears are fixed on both the fixing seat and the support seat, the cantilever is hinged to the fixing seat through the hinge ears provided on the fixing seat, and the swing arm is hinged to the support seat through the hinge ears provided on the support seat.

[0029] Compared with the existing technology, the vehicle exterior door lock function verification device has the following advantages:

[0030] It can simulate the action of rescue workers manually opening the car door outside the car, so as to meet the needs of testing whether the vehicle door can be opened from the outside, and then verify the functionality of the door lock; the fixed seat and the support seat have a large contact area with the car body, with good load-bearing effect, and there is no need to destroy the car body structure, so it is easy to disassemble and assemble; the hinged connection can adapt to the rotation of the car door, with a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention when performing vehicle detection.

[0032] Figure 2 It is a structural schematic diagram of the vehicle exterior door lock function verification device provided by the present invention.

[0033] Figure 3 The present invention provides Figure 2 Enlarged schematic diagram of point A in the middle.

[0034] In the figure, 1. fixed seat; 2. supporting seat; 3. swing arm; 31. slide groove; 32. socket; 33. limit step; 4. clamping seat; 41. clamping ear; 42. latch pin; 43. clearance groove; 44. positioning groove; 5. cantilever; 51. guide cavity; 52. slot; 6. slider; 71. lead screw; 72. nut; 73. motor; 74. tension spring; 8. positioning pin; 81. limit stop edge; 9. spring; 10. magnet; 11. hinge ear. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0036] Example 1

[0037] like Figure 1 and Figure 2The vehicle outer door lock function verification device shown comprises a fixed seat 1, a support seat 2, a swing arm 3 and a clamping seat 4 for connecting the vehicle door outer handle arranged on the swing arm 3, magnetic blocks 10 are fixedly connected on the fixed seat 1 and the support seat 2, the fixed seat 1 and the support seat 2 are installed on the surface of the vehicle body through the magnetic blocks 10, and the installation and removal are convenient without damaging the structure of the vehicle body.

[0038] As shown in the figure, the fixed seat 1 and the support seat 2 are both fixed with a hinged lug 11, and one end of the swing arm 3 is hinged to the support seat 2 through the hinged lug 11 arranged on the support seat 2. Figure 2 As shown in the figure, the fixed seat 1 is hinged with a cantilever 5, the cantilever 5 is hinged to the fixed seat 1 through the hinged lug 11 arranged on the fixed seat 1, and the center line of rotation of the cantilever 5 around the fixed seat 1 is parallel to the center line of rotation of the swing arm 3 around the support seat 2. Figure 2 As shown in the figure, the cantilever 5 is internally provided with a guide cavity 51 extending along the length direction thereof, a sliding block 6 is slidingly arranged in the guide cavity 51, and the side of the cantilever 5 facing the support seat 2 is provided with a length direction extending slot 52 in communication with the guide cavity 51, and the end of the swing arm 3 away from the support seat 2 passes through the slot 52 and is hinged to the sliding block 6, and the cantilever 5 is provided with a driving assembly for driving the sliding block 6 to slide in the guide cavity 51, when the sliding block 6 moves, the swing arm 3 can be swung, the clamping seat 4 can generate an outward pulling force on the vehicle door outer handle, the side door can be tested whether it can be opened from the outside, and the functionality of the vehicle door lock can be verified.

[0039] Figure 2 As shown in the figure, the driving assembly comprises a lead screw 71 rotatably arranged in the cantilever 5, a nut 72 slidingly arranged in the guide cavity 51 and a motor 73 for driving the rotation of the lead screw 71, the motor 73 is located at the end of the cantilever 5 away from the fixed seat 1, the nut 72 is located between the motor 73 and the sliding block 6, the lead screw 71 extends along the length direction of the cantilever 5, the nut 72 is in threaded cooperation with the lead screw 71, the sliding block 6 is sleeved on the lead screw 71, the nut 72 is connected with the sliding block 6 through a tension spring 74, and the tension spring 74 is sleeved on the lead screw 71.

[0040] As shown in the figure, the nut 72 is circumferentially limited in the guide cavity 51, the motor 73 is installed on the cantilever 5 for driving the rotation of the lead screw 71, thereby driving the nut 72 to slide in the guide cavity 51, and further driving the sliding block 6 to slide in the guide cavity 51. The transmission of the lead screw nut transmission pair composed of the lead screw 71 and the nut 72 is large, which can generate sufficient pulling force and effectively drive the sliding block 6 to slide in the guide cavity 51. Figure 2 The setting of the tension spring 74 can buffer the pulling force suffered by the sliding block 6, so that the pulling force acting on it gradually changes from small to large, and when the vehicle door lock fails to open the door, the driving assembly will not be damaged, which is beneficial to repeated use.

[0041]

[0042]

[0043] ​​​The cross-sectional profile of the slider 6 and the nut 72 is the same as that of the guide cavity 51 and is not circular. In this embodiment, it is rectangular, so that the slider 6 and the nut 72 can only slide along the guide cavity 51 with a single degree of freedom.

[0044] like Figure 2 As shown, the base 4 is located between the fixing base 1 and the supporting base 2. The base 4 is provided with two ears 41 for extending to the upper and lower sides of the outer door handle respectively, and a latch 42 inserted between the two ears 41. A clearance groove 43 for accommodating the outer door handle is formed between the two ears 41, and the latch pin 42 restricts the outer door handle from escaping from the clearance groove 43.

[0045] When in use, the card holder 4 is buckled on the outer door handle, and then the latch 42 is inserted between the two ears 41 to effectively connect the card holder 4 to the outer door handle. The clearance groove 43 can not only accommodate the outer door handle, but also provide it with sufficient movement space when opening the car door.

[0046] like Figure 2 As shown, the swing arm 3 has a slot 31 extending along its length on the side facing the vehicle body. The holder 4 slides in the slot 31. A positioning structure is provided between the swing arm 3 and the holder 4 to position the holder 4 once it is in place. The holder 4 can be moved according to the position of the exterior door handle, making it adaptable to doors of different models, thus providing high practicality.

[0047] like Figure 2 and Figure 3 As shown, the positioning structure includes several positioning grooves 44 provided on the base 4, a socket 32 ​​and a positioning pin 8 provided on the swing arm 3. Several positioning grooves 44 are distributed along the length direction of the swing arm 3, and the positioning pin 8 inserted into the socket 32 ​​can be inserted into the positioning groove 44 arranged opposite thereto.

[0048] like Figure 3 As shown, the inner end of the positioning pin 8 has a limit stop edge 81, and the socket 32 ​​has a limit step 33. A spring 9 is sleeved on the positioning pin 8, one end of the spring 9 rests on the limit stop edge 81, and the other end rests on the limit step 33.

[0049] When the positioning pin 8 is not subjected to external force, it is inserted into the corresponding positioning groove 44 under the action of the spring 9. When the card holder 4 needs to be moved, the positioning pin 8 is pulled outward so that the inner end of the positioning pin 8 is disengaged from the positioning groove 44, and the spring 9 is compressed and deformed, and the position of the card holder 4 can be moved. When the card holder 4 is moved into place, the positioning pin 8 is released, and the elastic force of the spring 9 causes the positioning pin 8 to move inward and insert into the corresponding positioning groove 44, thereby locking the card holder 4.

[0050] The fixed seat 1 and the support seat 2 are fixed at appropriate positions outside the vehicle body during installation, such as being fixed at the front side of the rear door when detecting the front door, and being fixed on the front door, or being fixed outside the rear pillar when detecting the rear door, and being fixed on the rear door; the clamping seat 4 is clamped on the outer handle of the door, so that the swing arm 3 forms a lever structure, the opening motor 73 drives the lead screw 71 to rotate, thereby driving the nut 72 to move away from the fixed seat 1, and under the action of the tension spring 74, the sliding block 6 moves away from the fixed seat 1, thereby driving the swing arm 3 to swing, generating an outward pulling force on the outer handle of the door, testing whether the side door can be opened from the outside, and further verifying the functionality of the door lock.

[0051] Embodiment Two

[0052] The structural principle of this embodiment is basically the same as that of Embodiment One, and the difference lies in that the driving assembly includes a pneumatic cylinder or a hydraulic cylinder arranged at one end of the cantilever 5 away from the fixed seat 1, the piston rod of the pneumatic cylinder or the hydraulic cylinder extends into the guide cavity 51 and is connected with the sliding block 6, when the piston rod of the pneumatic cylinder or the hydraulic cylinder retracts, it can drive the sliding block 6 to slide along the length direction of the cantilever 5, thereby driving the swing arm 3 to swing.

[0053] Embodiment Three

[0054] The structural principle of this embodiment is basically the same as that of Embodiment One, and the difference lies in that the driving assembly includes a linear motor 73 arranged on the cantilever 5, and the mover of the linear motor 73 is connected with the sliding block 6. The linear motor 73 extends along the length direction of the cantilever 5, when the linear motor 73 works, it can drive the sliding block 6 to slide along the length direction of the cantilever 5, thereby driving the swing arm 3 to swing.

[0055] Embodiment Four

[0056] The out-of-vehicle door lock function verification device includes a fixed seat 1, a support seat 2, a swing arm 3, and a clamping seat 4 arranged on the swing arm 3 for connecting the outer handle of the door, and a magnetic block 10 is fixedly connected on the fixed seat 1 and the support seat 2, the fixed seat 1 and the support seat 2 are installed on the surface of the vehicle body through the magnetic block 10, which is convenient to disassemble and assemble without damaging the structure of the vehicle body.

[0057] The fixed seat 1 and the support seat 2 are both fixed with a hinge lug 11, and one end of the swing arm 3 is hinged with the support seat 2 through the hinge lug 11 arranged on the support seat 2. The fixed seat 1 is hinged with a cantilever 5, and the cantilever 5 is hinged with the fixed seat 1 through the hinge lug 11 arranged on the fixed seat 1, and the center line of the rotation of the cantilever 5 around the fixed seat 1 is parallel to the center line of the rotation of the swing arm 3 around the support seat 2.

[0058] The sliding block 6 is slidably sleeved outside the cantilever 5.

[0059] The driving assembly includes a cylinder or a hydraulic cylinder arranged at one end of the cantilever 5 away from the fixed seat 1. The piston rod of the cylinder or the hydraulic cylinder is connected to the slider 6. When the piston rod of the cylinder or the hydraulic cylinder contracts, it can drive the slider 6 to slide along the length direction of the cantilever 5, thereby driving the swing arm 3 to swing.

[0060] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A vehicle exterior door lock function verification device, characterized in that: The invention comprises a fixed seat (1), a support seat (2), a swing arm (3), and a holder (4) provided on the swing arm (3) for connecting a door handle outside the vehicle, wherein the holder (4) is located between the fixed seat (1) and the support seat (2), one end of the swing arm (3) is hinged on the support seat (2), and the fixed seat (1) is provided with a driving assembly for driving the swing arm (3) to rotate around a hinge point between the swing arm (3) and the support seat (2); a cantilever (5) is hinged on the fixed seat (1), and the center line of the cantilever (5) rotating around the fixed seat (1) is parallel to the center line of the swing arm (3) rotating around the support seat (2); a slider (6) is provided on the cantilever (5), and one end of the swing arm (3) away from the support seat (2) is hinged to the slider (6), and the driving assembly is used to drive the slider (6) to move along the length direction of the cantilever (5); a cantilever (5) is provided inside the cantilever (5) along the length direction of the cantilever (5) The guide cavity (51) is extended, the slider (6) is slidably arranged in the guide cavity (51), the side of the cantilever (5) facing the support seat (2) has a slot (52) extending along the length direction of the cantilever (5) and communicating with the guide cavity (51), and the end of the swing arm (3) away from the support seat (2) passes through the slot (52) and is hinged to the slider (6); the driving assembly includes a screw (71) rotatably installed in the cantilever (5), a nut (72) slidably arranged in the guide cavity (51), and a motor (73) for driving the screw (71) to rotate, the screw (71) extends along the length direction of the cantilever (5), the nut (72) is threadedly matched with the screw (71), the slider (6) is sleeved on the screw (71), and the nut (72) is connected to the slider (6); the fixed seat (1) and the support seat (2) are both provided with a magnetic block (10).

2. The vehicle exterior door lock function verification device according to claim 1, characterized in that: The motor (73) is located at one end of the cantilever (5) away from the fixing seat (1); the nut (72) is located between the motor (73) and the slider (6), and the slider (6) is connected to the nut (72) via a tension spring (74).

3. The vehicle exterior door lock function verification device according to claim 1 or 2, characterized in that: The holder (4) is provided with two ears (41) for respectively extending toward the upper and lower sides of the vehicle door handle, and a latch (42) inserted between the two ears (41). A clearance groove (43) for accommodating the vehicle door handle is formed between the two ears (41). The latch (42) restricts the vehicle door handle from falling out of the clearance groove (43).

4. The vehicle exterior door lock function verification device according to claim 3, characterized in that: The swing arm (3) is provided with a slide groove (31) extending along its length direction, the card seat (4) is slidably arranged in the slide groove (31), and a positioning structure for positioning the card seat (4) when the card seat (4) is moved into position is provided between the swing arm (3) and the card seat (4).

5. The vehicle exterior door lock function verification device according to claim 4, characterized in that: The positioning structure comprises a plurality of positioning grooves (44) provided on the card seat (4), a socket (32) provided on the swing arm (3), and a positioning pin (8), wherein the plurality of positioning grooves (44) are distributed along the length direction of the swing arm (3), and the positioning pin (8) inserted through the socket (32) can be inserted into the positioning groove (44) provided opposite thereto.

6. The vehicle exterior door lock function verification device according to claim 5, characterized in that: The inner end of the positioning pin (8) has a limit stop edge (81), the insertion hole (32) has a limit step (33), and a spring (9) is sleeved on the positioning pin (8), one end of the spring (9) rests on the limit stop edge (81), and the other end rests on the limit step (33).

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