Error prevention device for automotive door lock assembly line

Abstract

This utility model belongs to the field of automotive door lock assembly and discloses an error prevention device for automotive door lock assembly lines. It includes a lock cylinder connecting rod and a lower housing. The lower housing has a fixed shaft, and the lock cylinder connecting rod is rotatably connected to the lower housing via the fixed shaft. An elastic element is provided on the outer side of the fixed shaft. A lifting assembly that can protrude from the lock cylinder connecting rod is provided between the elastic element and the lower housing. The lifting assembly is triggered by the elastic element. When the lock cylinder connecting rod is properly mounted on the lower housing, an avoidance structure is provided on the side of the lock cylinder connecting rod closest to the lower housing. The position of the avoidance structure is adapted to the position of the elastic element. The elastic element, in its natural downward state, pushes the lock cylinder connecting rod upward to provide an initial visual warning. If the error is not detected and the closing process begins, the pressure generated during closing will cause the lifting assembly to push upward, actively and physically preventing the upper housing from closing, providing further protection.

Description

Technical Field

[0001] This disclosure pertains to the field of automotive door lock assembly, specifically relating to error prevention devices for automotive door lock assembly lines. Background Technology

[0002] As a crucial component of vehicle safety, the assembly quality of car door locks directly impacts the overall safety and reliability of the vehicle. During door lock assembly, the correct installation orientation of the lock cylinder linkage is paramount. Traditional lock cylinder linkage structures often suffer from poor differentiation between forward and reverse installation. If the assembly and transfer of the lock cylinder linkage on the assembly line are handled by robotic arms, with only a few operators monitoring the line, operator fatigue or negligence can easily lead to incorrect assembly of the lock cylinder linkage to the lower housing.

[0003] Furthermore, as exemplified by the door lock cylinder anti-misinstallation structure disclosed in CN221779265U, it uses a stepped surface on a fixed shaft and a countersunk hole on the lock cylinder connecting rod to prevent the lock cylinder connecting rod from being fully installed in reverse, thus providing a visual warning to the operator. However, when one or a few people are inspecting the entire production line, it is difficult to detect any height differences in a timely and accurate manner. Moreover, if the reverse installation of the lock cylinder is not detected in time, the device will directly proceed to the next process and assemble the top cover. At this time, due to the rigid contact between the lock cylinder connecting rod and the stepped fixed shaft, stress is concentrated at the connection between the lock cylinder connecting rod and the fixed shaft, which can easily cause damage or breakage to the lock cylinder connecting rod. This not only fails to provide protection but may also cause secondary damage due to the forced closing of the cover. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide an error prevention device for automotive door lock assembly lines, which solves the technical problem that the prior art cannot provide effective protection after misassembly and flow into subsequent processes, and instead causes secondary damage to the lock cylinder linkage due to rigid interference.

[0005] The objective of this disclosure can be achieved through the following technical solutions:

[0006] An error prevention device for an automotive door lock assembly line includes a lock cylinder connecting rod and a lower housing. The lower housing is provided with a fixed shaft, and the lock cylinder connecting rod is rotatably connected to the lower housing through the fixed shaft.

[0007] An elastic element is provided on the outer side of the fixed shaft, and a lifting assembly that can protrude from the lock cylinder connecting rod is provided between the elastic element and the lower housing. The lifting assembly is triggered by the elastic element.

[0008] When the lock cylinder link is mounted on the lower housing, a clearance structure is provided on the side of the lock cylinder link closest to the lower housing, and the position of the clearance structure is adapted to the position of the elastic element.

[0009] In some disclosures, when the lock cylinder link is installed in reverse, the end face of the lock cylinder link away from the avoidance structure is flush with the end of the lifting assembly, at which point the end of the lifting assembly is higher than the top of the lower housing.

[0010] In some disclosures, shock-absorbing pads are provided between the elastic element lock cylinder connecting rods.

[0011] In some disclosures, the upper end face of the lower housing is provided with a transmission component, which includes a hydraulic flow channel and a damping fluid. The two ends of the hydraulic flow channel are respectively connected to a lifting assembly and an elastic component, and the inner side of the hydraulic flow channel is provided with damping fluid.

[0012] In some disclosures, the material of the hydraulic flow channel is copper or iron.

[0013] In some disclosures, the hydraulic flow channel is made of silicone or rubber.

[0014] In some disclosures, the lifting assembly includes a first telescopic sleeve and a second telescopic sleeve, and the two ends of the hydraulic flow channel are respectively connected to the first telescopic sleeve and the second telescopic sleeve. The first telescopic sleeve is located directly below the shock-absorbing pad, while the free end of the second telescopic sleeve is fixed with a rubber pad.

[0015] In some disclosures, the avoidance structure includes a slot, the height of which is greater than the height of the hydraulic flow channel, and the lifting assembly is not on the rotation path of the lock cylinder link about the fixed axis.

[0016] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0017] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0018] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0019] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0020] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0021] The beneficial effects of this disclosure are:

[0022] The elastic element lowers naturally, pushing the lock cylinder linkage upward to provide an initial visual warning; if the error is not detected and the closing process begins, the pressure generated during closing will cause the lifting component to push upward, actively physically preventing the upper housing from closing and providing further protection.

[0023] At the same time, after the lifting assembly rises to abut against the upper housing, the downward pressure of the upper housing is distributed to the upper end face of the lock cylinder connecting rod and the support point of the lifting assembly, increasing the stress points of the structure below the upper housing, which helps to reduce the shearing or fracture damage caused by stress concentration at the connection between the lock cylinder connecting rod and the fixed shaft during reverse installation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure when the transmission component of this embodiment is made of a rigid material;

[0026] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of this disclosure;

[0027] Figure 3 This is an exploded structural diagram of an embodiment of this disclosure;

[0028] Figure 4 This is a schematic diagram of the connection structure between the lifting assembly and the transmission component according to an embodiment of this disclosure;

[0029] Figure 5 This is a front view schematic diagram of an embodiment of this disclosure;

[0030] Figure 6 This is a schematic diagram of the overall structure of the transmission component in an embodiment of this disclosure when it is made of a flexible material.

[0031] In the diagram: 1. Lock cylinder connecting rod; 11. Avoidance structure; 111. Hollow slot; 2. Lower housing; 3. Fixed shaft; 4. Elastic element; 5. Lifting assembly; 51. First telescopic sleeve; 52. Second telescopic sleeve; 53. Rubber pad; 6. Shock-absorbing pad; 7. Transmission component; 71. Hydraulic flow channel; 72. Damping fluid. Detailed Implementation

[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0033] Please refer to Figures 1 to 6The error prevention device for the automotive door lock assembly line includes a lock cylinder connecting rod 1 and a lower housing 2. The lower housing 2 is provided with a fixed shaft 3, and the lock cylinder connecting rod 1 is rotatably connected to the lower housing 2 through the fixed shaft 3.

[0034] An elastic element 4 is provided on the outer side of the fixed shaft 3. A lifting assembly 5 that can protrude from the lock cylinder connecting rod 1 is provided between the elastic element 4 and the lower housing 2. The lifting assembly 5 is triggered by the elastic element 4.

[0035] Please refer to Figure 1 , Figure 2 and Figure 4 When the lock cylinder link 1 is mounted on the lower housing 2, a clearance structure 11 is provided on the side of the lock cylinder link 1 closest to the lower housing 2, and the position of the clearance structure 11 is adapted to the position of the elastic element 4.

[0036] When in use, the bottom surface of the elastic element 4 is fixed to the upper end surface of the lower housing 2. When the lock cylinder connecting rod 1 is installed in the lower housing 2, the side of the lock cylinder connecting rod 1 with the avoidance structure 11 is fastened to the top of the elastic element 4. At this time, the lower end surface of the lock cylinder connecting rod 1 is in contact with the upper end surface of the lower housing 2, and the elastic element 4 is in its original length state, while the lifting assembly 5 is retracted to its shortest state.

[0037] Please refer to Figures 1 to 4 When the lock cylinder connecting rod 1 and the lower housing 2 are reversed, the upper end face of the lock cylinder connecting rod 1 abuts against the elastic element 4. The lock cylinder connecting rod 1 is supported by the elastic element 4, so that the lock cylinder connecting rod 1 protrudes from the lower housing 2 for easy observation. At the same time, when the upper housing is forcibly installed in the next process, the upper housing applies pressure from top to bottom to the lock cylinder connecting rod 1, thereby compressing the elastic element 4 downward. When the elastic element 4 moves downward, it drives the lifting assembly 5 connected to it to move upward and protrude from the lower housing 2. At this time, when the upper housing presses down on the reversed lock cylinder connecting rod 1, the lifting assembly 5 provides an upward fulcrum for the upper housing to prevent the upper housing and lower housing 2 from being forcibly fitted together, which would cause stress concentration at the connection between the lock cylinder connecting rod 1 and the fixed shaft 3 and damage the lock cylinder connecting rod 1. This device disperses the stress to the upper end face of the lock cylinder connecting rod 1 and the contact point between the lifting assembly 5 and the upper housing, which helps to further reduce the damage to the lock cylinder connecting rod 1 when it is reversed.

[0038] When the lock cylinder link 1 is installed in reverse, the end face of the lock cylinder link 1 away from the avoidance structure 11 is flush with the end of the lifting assembly 5. At this time, the end of the lifting assembly 5 is higher than the top of the lower housing 2. At this time, there is a large gap between the upper housing and the lower housing 2. If the screw is forcibly tightened, it will cause the screw to pass through the upper housing and not be tightened on the lower housing 2. Therefore, it helps to avoid the trouble of removing the screw again when the lock cylinder link 1 is installed in reverse.

[0039] Please refer to Figures 3 to 4A shock-absorbing pad 6 is provided between the elastic element 4 and the lock cylinder connecting rod 1; the shock-absorbing pad 6 reduces the wear on the lock cylinder connecting rod 1 when it is squeezed by the elastic element 4, which helps to increase the service life of the lock cylinder connecting rod 1.

[0040] Please refer to Figures 1 to 5 The upper end face of the lower housing 2 is provided with a transmission component 7. The transmission component 7 includes a hydraulic flow channel 71 and a damping fluid 72. The two ends of the hydraulic flow channel 71 are respectively connected to the lifting component 5 and the elastic component 4. The inner side of the hydraulic flow channel 71 is provided with damping fluid 72.

[0041] When one end of the transmission component 7 is pressurized, the damping fluid 72 flows to the unpressurized end. When both ends of the transmission component 7 are pressurized, the damping fluid 72 expands evenly to both ends, causing the upper end of the lifting assembly 5 to come into contact with the upper housing and stop. Compared to controlling the lifting assembly 5 alone, using the displacement of the upper housing pressing the elastic element 4 and the shock-absorbing pad 6 to control the extension and retraction of the lifting assembly 5 can force the lifting assembly 5 to move to contact the upper housing during the upward process.

[0042] First Embodiment

[0043] Please refer to Figures 1 to 5 The hydraulic flow channel 71 is made of copper or iron.

[0044] When in use, the deformation capacity of the rigid material is reduced, so that when the damping fluid 72 expands outward under pressure, it uniformly compresses the hydraulic channel 71. The rigid material has high resistance to pressure and deformation, which can provide stable support for the flow of the damping fluid 72, which is beneficial to improving the stability of the transmission device and can resist higher intensity downward pressure.

[0045] Second Embodiment

[0046] Please refer to Figure 6 The hydraulic flow channel 71 is made of silicone or rubber.

[0047] When in use, if the hydraulic channel 71 is made of a flexible material, the flexible material has a high deformation capacity, thus allowing for more freedom in the installation position of the lifting assembly 5.

[0048] Please refer to Figure 1 , Figures 3 to 6 The lifting assembly 5 includes a first telescopic sleeve 51 and a second telescopic sleeve 52, and the two ends of the hydraulic flow channel 71 are respectively connected to the first telescopic sleeve 51 and the second telescopic sleeve 52. The first telescopic sleeve 51 is located directly below the shock-absorbing pad 6, while the free end of the second telescopic sleeve 52 is fixed with a rubber pad 53.

[0049] When the shock-absorbing pad 6 is pressed downwards, it compresses the first telescopic sleeve 51 directly below it, causing the damping fluid 72 to move towards the side closer to the second telescopic sleeve 52. This causes the end of the second telescopic sleeve 52 to move upwards until the rubber pad 53 comes into contact with the upper housing directly above it, thus providing a fulcrum for the descent of the upper housing. At the same time, the rubber pad 53 is made of rubber, which helps to reduce the damage caused by the second telescopic sleeve 52 squeezing the upper housing. It helps to reduce the impact energy at the moment the second telescopic sleeve 52 contacts the upper housing, reducing the impact noise or scratches caused by hard collisions between the metal upper housing and the second telescopic sleeve 52. It also increases the friction between the two, reducing the phenomenon of slippage between the upper housing and the second telescopic sleeve 52, which helps to improve the stability of the lifting assembly 5.

[0050] Please refer to Figure 1 and Figure 3 When the lock cylinder link 1 is installed in reverse, the upper end face of the lock cylinder link 1 does not have a clearance structure 11 adapted to the lifting assembly 5, so that the lock cylinder link 1 will not fit against the lower housing 2 even when the elastic element 4 is compressed to its shortest state.

[0051] The avoidance structure 11 includes a slot 111, the height of which is greater than the height of the hydraulic flow channel 71, and the lifting assembly 5 is not on the rotation path of the lock core connecting rod 1 with the fixed shaft 3 as the center.

[0052] The second telescopic cylinder is not installed in the area swept by the end of the lock cylinder link 1 near the lifting assembly 5, so as to avoid interference with the movement of the lock cylinder link 1 when the second telescopic cylinder is installed in the correct position, so as to prevent the lock cylinder link 1 from rotating normally and thus affecting the normal use of the lock cylinder link 1.

[0053] Please refer to Figure 1 Meanwhile, the height of the empty groove 111 is greater than the height of the hydraulic channel 71, so that when the lock cylinder connecting rod 1 is installed in the correct position, the hydraulic channel 71 is located inside the empty groove 111. When the lock cylinder connecting rod 1 rotates, the hydraulic channel 71 always rotates relative to the empty groove 111, which helps to reduce the motion interference of the lifting assembly 5 on the lock cylinder connecting rod 1 when the lock cylinder connecting rod 1 rotates normally.

[0054] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of the error-proofing device for automotive door lock assembly lines provided by this utility model.

[0055] When the lock cylinder connecting rod 1 is installed in the correct orientation, its slot 111 is fitted onto the outside of the elastic element 4, and the lower end face of the lock cylinder connecting rod 1 is in contact with the upper end face of the lower housing 2. At this time, the elastic element 4 maintains its original length, the lifting assembly 5 is in a retracted state, and both the first telescopic sleeve 51 and the second telescopic sleeve 52 are in an unloaded state. When the lock cylinder connecting rod 1 is installed in reverse, the lock cylinder connecting rod 1 compresses the shock-absorbing pad 6 and the elastic element 4 to move downward, causing the first telescopic sleeve 51 to compress the damping fluid 72 in the hydraulic channel 71. The damping fluid 72 pushes the second telescopic sleeve 52 to extend upward, causing the rubber pad 53 to protrude from the upper end face of the lower housing 2. If the upper housing is forcibly installed at this time, the upper housing presses down on the reversed lock cylinder connecting rod 1, further compressing the elastic element 4, causing the second telescopic sleeve 52 to continue to rise until the rubber pad 53 contacts the upper housing to form a rigid support, thereby preventing the upper housing and the lower housing 2 from completely closing and hindering the screw tightening step in the next process.

[0056] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. An error-proofing device for an automotive door lock assembly line, comprising a lock cylinder connecting rod (1) and a lower housing (2), wherein the lower housing (2) is provided with a fixed shaft (3), and the lock cylinder connecting rod (1) is rotatably connected to the lower housing (2) via the fixed shaft (3), characterized in that: An elastic element (4) is provided on the outside of the fixed shaft (3), and a lifting assembly (5) that can protrude from the lock cylinder connecting rod (1) is provided between the elastic element (4) and the lower housing (2). The lifting assembly (5) is triggered by the elastic element (4). When the lock cylinder link (1) is mounted on the lower housing (2), a clearance structure (11) is provided on the side of the lock cylinder link (1) close to the lower housing (2), and the position of the clearance structure (11) is adapted to the position of the elastic element (4).

2. The error-proofing device for automotive door lock assembly lines according to claim 1, characterized in that, When the lock cylinder link (1) is reversed, the end face of the lock cylinder link (1) away from the avoidance structure (11) is flush with the end of the lifting assembly (5). At this time, the end of the lifting assembly (5) is higher than the uppermost end of the lower housing (2).

3. The error-proofing device for automotive door lock assembly lines according to claim 2, characterized in that, A shock-absorbing pad (6) is provided between the elastic element (4) and the lock core connecting rod (1).

4. The error-proofing device for automotive door lock assembly lines according to claim 3, characterized in that, The upper end face of the lower housing (2) is provided with a transmission component (7), which includes a hydraulic flow channel (71) and a damping fluid (72). The two ends of the hydraulic flow channel (71) are respectively connected to the lifting assembly (5) and the elastic component (4), and the inner side of the hydraulic flow channel (71) is provided with damping fluid (72).

5. The error-proofing device for automotive door lock assembly lines according to claim 4, characterized in that, The hydraulic flow channel (71) is made of copper or iron.

6. The error-proofing device for automotive door lock assembly lines according to claim 4, characterized in that, The hydraulic flow channel (71) is made of silicone or rubber.

7. The error-proofing device for automotive door lock assembly lines according to claim 4, characterized in that, The lifting assembly (5) includes a first telescopic sleeve (51) and a second telescopic sleeve (52), and the two ends of the hydraulic flow channel (71) are respectively connected to the first telescopic sleeve (51) and the second telescopic sleeve (52). The first telescopic sleeve (51) is located directly below the shock-absorbing pad (6), and a rubber pad (53) is fixed to the free end of the second telescopic sleeve (52).

8. The error-proofing device for automotive door lock assembly lines according to claim 7, characterized in that, The avoidance structure (11) includes a slot (111), the height of which is greater than the height of the hydraulic flow channel (71), and the lifting assembly (5) is not on the rotation path of the lock core connecting rod (1) with the fixed shaft (3) as the center.

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