Automobile door hinge surface treatment clamping mechanism

Abstract

The utility model discloses a kind of automobile door hinge surface treatment clamping mechanisms, it is related to automobile manufacturing field, including base, base top is symmetrically provided with lug, rotatingly connected with rotating rod between lug, rotating rod outside is rotatingly connected with left clamping block and right clamping block, left clamping block and right clamping block can be relatively rotated to mutually adhere with rotating rod as pivot, recess is respectively set up in the side of left clamping block and right clamping block mutually close, the utility model is rotated design by left clamping block and right clamping block, in combination with the elastic reset action of spring, the quick clamping and release of automobile door hinge shaft pin are realized, operating personnel only need to press hinge simply, can be separated by arc chamfer guiding clamping block, shaft pin is placed in recess, then spring is automatically reset clamping, clamping process is simplified, work efficiency is improved, when clamping automobile door hinge, it is guaranteed that hinge can normally rotate around its shaft pin, to facilitate to carry out omnibearing surface treatment operation.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, and in particular to a surface treatment clamping mechanism for automobile door hinges. Background Technology

[0002] In the automotive manufacturing industry, car door hinges, as key components connecting the door and the body, directly affect the smoothness of opening and closing, sealing performance, and overall appearance quality of the door due to their surface treatment quality. In existing automotive door hinge surface treatment processes, traditional clamping mechanisms often employ bolt fastening or snap-fit ​​designs, requiring manual tightening and loosening of multiple fixing points to achieve clamping and release. In mass production, operators must adjust multiple bolts one by one, resulting in time-consuming clamping processes and the need for tools.

[0003] Existing clamps often directly contact the hinge surface through rigid pressure blocks, concentrating the clamping force in local areas, such as the hinge edge or weld point, while the middle of the hinge or weak parts such as around the pin hole are not subjected to sufficient force. Utility Model Content

[0004] The purpose of this invention is to provide a surface treatment clamping mechanism for automotive door hinges, which solves the problems of low clamping efficiency and lack of dynamic adaptability in traditional clamping methods.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A surface treatment clamping mechanism for an automotive door hinge includes a base, with symmetrical lugs on the top of the base. A rotating rod is rotatably connected between the lugs. A left clamping block and a right clamping block are rotatably connected to the outside of the rotating rod. The left and right clamping blocks can rotate relative to each other around the rotating rod until they fit together. Grooves are respectively provided on the side of the left and right clamping blocks that are close to each other. When the left and right clamping blocks rotate to fit together, the two grooves are joined to form a circular hole that matches the outer diameter of the automotive door hinge pin, which is used to clamp and position the automotive door hinge pin. Side lugs are provided on the side of the left and right clamping blocks that are opposite to each other. Springs are respectively provided between the side lugs and the base, and the side lugs are elastically connected to the base through the springs.

[0006] Preferably, the corners where the tops of the left and right clamping blocks meet are provided with rounded chamfers. When clamping the car door hinge, the car door hinge is pressed so that its pivot pin contacts the rounded chamfer. Under the pressing action of the pivot pin, the rounded chamfer guides the left and right clamping blocks to overcome the elastic force of the spring and separate from each other.

[0007] Preferably, small holes are provided at the four corners of the top of the base, and the base is fixed to the workbench, production line equipment or other support structure by fasteners such as bolts and screws passing through the small holes.

[0008] Preferably, the base is provided with a suction cup at the bottom, which is used to detachably fix the base to a smooth workbench, equipment surface or other suitable installation position by adsorption during installation.

[0009] Preferably, an adjusting rod is threaded inside the side ear, and a compression plate is fixedly connected to the bottom end of the adjusting rod. The top of the spring is in contact with the corresponding compression plate. By rotating the adjusting rod, the adjusting rod can be moved along its axial direction, thereby driving the compression plate to move up and down to adjust the compression degree of the compression plate on the spring, thus realizing the adjustment of the spring tension.

[0010] Preferably, protrusions are fixedly connected to both sides of the top of the base and the bottom of the extrusion plate. The two ends of the spring are respectively sleeved on the outside of the corresponding protrusions. The protrusions are used to position and guide the two ends of the spring to prevent the spring from being misaligned, sliding or shifting during contraction or extension.

[0011] Preferably, the groove surface is provided with anti-slip texture. The anti-slip texture is used to increase the friction between the groove and the car door hinge pin, thereby enhancing the clamping stability of the pin when the left and right clamping blocks hold the car door hinge pin.

[0012] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model achieves rapid clamping and release of the car door hinge pin by using the rotation design of the left and right clamping blocks combined with the elastic reset effect of the spring. The operator only needs to press the hinge to guide the clamping blocks to separate through the rounded chamfer and place the pin in the groove. Then the spring automatically resets and clamps, which simplifies the clamping process and improves work efficiency. When clamping the car door hinge, it ensures that the hinge can rotate normally around its pin, thus facilitating all-round surface treatment operations.

[0013] 2. This utility model can flexibly adjust the tension of the spring through the adjusting rod and the extrusion plate to adapt to the clamping requirements of different specifications of car door hinges, or to meet the special requirements of clamping force under different surface treatment processes. This adjustability makes the mechanism more widely applicable and reduces production costs and equipment replacement frequency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the base structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the rotating rod structure of this utility model.

[0017] Figure 4 This is a schematic diagram showing the overall structure of this utility model.

[0018] Reference numerals: 1. Base; 2. Lug; 3. Rotating rod; 4. Left clamping block; 5. Right clamping block; 6. Groove; 7. Side lug; 8. Spring; 9. Small hole; 10. Suction cup; 11. Adjusting rod; 12. Squeezing plate; 13. Protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 This embodiment provides a surface treatment clamping mechanism for an automotive door hinge, including a base 1. The top of the base 1 is symmetrically provided with lugs 2. A rotating rod 3 is rotatably connected between the lugs 2. A left clamping block 4 and a right clamping block 5 are rotatably connected to the outside of the rotating rod 3. The left clamping block 4 and the right clamping block 5 can rotate relative to each other about the rotating rod 3 until they fit together. The sides of the left clamping block 4 and the right clamping block 5 that are close to each other are respectively provided with grooves 6. When the left clamping block 4 and the right clamping block 5 rotate to fit together, the two grooves 6 are joined together to form a circular hole that matches the outer diameter of the automotive door hinge pin, which is used to clamp and position the pin of the automotive door hinge. The sides of the left clamping block 4 and the right clamping block 5 that are opposite to each other are provided with side ears 7. Springs 8 are respectively provided between the side ears 7 and the base 1. The side ears 7 are elastically connected to the base 1 through the springs 8. The clamping mechanism is based on the base 1 as the supporting structure. It is rotatably connected to the rotating rod 3 by the lugs 2 symmetrically arranged on the top. The left clamping block 4 and the right clamping block 5 can rotate freely around the rotating rod 3. In the natural state, the elastic force of the spring 8 makes the left and right clamping blocks 5 tend to fit together. When it is necessary to clamp the car door hinge, the left and right clamping blocks 5 are rotated relative to each other by external force to overcome the elastic force of the spring 8 and separate. The axle pin of the car door hinge can be placed between the grooves 6 of the left and right clamping blocks 5 to achieve clamping and positioning. Since the left and right clamping blocks 5 only clamp the axle pin of the hinge, the car door hinge can still rotate normally around the axle pin after clamping, which meets the requirements of surface treatment operation.

[0021] Both the left clamping block 4 and the right clamping block 5 have rounded chamfers at the corners where they meet. During the clamping operation, the car door hinge pin is aligned with the top of the clamping block and pressed down. The pin first contacts the rounded chamfer. As the pressing action is performed, the curved surface of the rounded chamfer guides the left and right clamping blocks 5 to overcome the elastic force of the spring 8 and separate outward, creating space for the pin to enter the groove 6. When the pin moves to the corresponding position of the groove 6, the elastic restoring force of the spring 8 causes the left and right clamping blocks 5 to automatically return to their original position and clamp the pin between the grooves 6, completing the automatic clamping process.

[0022] The base 1 has small holes 9 at each of the four corners of its top. During installation, bolts, screws and other fasteners can be passed through the small holes 9 to firmly fix the base 1 to the workbench, production line equipment or other support structure.

[0023] The base 1 has a suction cup 10 at the bottom. During installation, the suction cup 10 is pressed to make it come into close contact with the smooth work surface, equipment surface and other adsorption surfaces, and the suction force of the suction cup 10 is used to fix the base 1.

[0024] The side ear 7 is internally threaded with an adjusting rod 11. The bottom end of the adjusting rod 11 is fixedly connected to a pressing plate 12. The top of the spring 8 is in contact with the corresponding pressing plate 12. When it is necessary to adjust the tension of the spring 8, the adjusting rod 11 is rotated, and the adjusting rod 11 is moved axially by means of the thread transmission principle, which drives the pressing plate 12 to move up and down. When the pressing plate 12 moves downward, it compresses the spring 8, increasing the elastic force of the spring 8. When it moves upward, it relaxes the spring 8, decreasing the elastic force of the spring 8.

[0025] Both sides of the top of the base 1 and the bottom of the extrusion plate 12 are fixedly connected to protrusions 13. The two ends of the spring 8 are respectively sleeved on the outer side of the corresponding protrusions 13. During the operation of the clamping mechanism, when the left and right clamping blocks 5 rotate relative to each other or the adjusting rod 11 adjusts the tension of the spring 8, the spring 8 will contract or extend. At this time, the protrusions 13 play a positioning and guiding role for the two ends of the spring 8, preventing the spring 8 from being misaligned, sliding or shifting during the movement, ensuring that the spring 8 always maintains a stable working state, and ensuring the reliability and stability of the clamping mechanism for the car door hinge.

[0026] The surface of the groove 6 is provided with anti-slip texture. When the car door hinge pin is clamped in the groove 6, the anti-slip texture is in close contact with the pin surface, increasing the friction between the two.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface treatment clamping mechanism for an automotive door hinge, comprising a base (1), characterized in that, The base (1) is symmetrically provided with lugs (2) on the top. A rotating rod (3) is rotatably connected between the lugs (2). A left clamping block (4) and a right clamping block (5) are rotatably connected to the outside of the rotating rod (3). The left clamping block (4) and the right clamping block (5) can rotate relative to each other around the rotating rod (3) until they fit together. The left clamping block (4) and the right clamping block (5) are respectively provided with grooves (6) on the side that are close to each other. When the left clamping block (4) and the right clamping block (5) rotate to fit together, the two grooves (6) are joined together to form a circular hole that matches the outer diameter of the car door hinge pin, which is used to clamp and position the car door hinge pin. The left clamping block (4) and the right clamping block (5) are respectively provided with side ears (7) on the side that are opposite to each other. A spring (8) is provided between the side ears (7) and the base (1). The side ears (7) are elastically connected to the base (1) through the spring (8).

2. The automotive door hinge surface treatment clamping mechanism according to claim 1, characterized in that, The left clamp (4) and the right clamp (5) are both provided with rounded chamfers at the corners where their tops meet.

3. The automotive door hinge surface treatment clamping mechanism according to claim 1, characterized in that, The base (1) has small holes (9) at the four corners of its top.

4. The automotive door hinge surface treatment clamping mechanism according to claim 1, characterized in that, The base (1) has a suction cup (10) at its bottom.

5. The automotive door hinge surface treatment clamping mechanism according to claim 1, characterized in that, The side ear (7) is internally threaded with an adjusting rod (11), and the bottom end of the adjusting rod (11) is fixedly connected with a pressing plate (12). The top of the spring (8) is in contact with the corresponding pressing plate (12).

6. The automotive door hinge surface treatment clamping mechanism according to claim 5, characterized in that, The base (1) has protrusions (13) fixedly connected to both sides of the top and the bottom of the extrusion plate (12), and the two ends of the spring (8) are respectively sleeved on the outside of the corresponding protrusions (13).

7. The automotive door hinge surface treatment clamping mechanism according to claim 1, characterized in that, The groove (6) has anti-slip texture on its surface.

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