A clamp for a car back panel

Abstract

The utility model provides a kind of clamp for automobile rear wall, belong to rear wall inner plate clamp technical field, the clamp for automobile rear wall has bottom plate, two riser plates are slidably connected on bottom plate, and the opposite sides of riser plate are respectively equipped with limit frame, two limit frame surfaces are respectively fixedly connected with shaft, and the surface of two shafts is respectively equipped with first shaft sleeve, and two first shaft sleeves are respectively sleeved in two riser plate interiors;Left wall of left riser plate is equipped with the driving part that drives limit frame rotation;Driving part includes sprocket and dial rotationally connected on riser plate, and dial drives sprocket to rotate at equal angle, and the middle part of sprocket is fixedly connected with left shaft, and the middle part of dial is fixedly installed on worm wheel by connecting rod;The utility model is used to solve the technical problem that angle adjustment is needed during welding process, but the angle adjustment is uncontrollable, can only rely on naked eye to judge, and can produce larger error.

Description

Technical Field

[0001] This utility model belongs to the technical field of rear panel clamps, specifically, it relates to a clamp for automobile rear panels. Background Technology

[0002] During the processing of automotive parts, fixtures are needed to clamp and fix them. Fixtures are essential process equipment in large-scale welding production. They can ensure the relative position of the welding. During the processing of the rear of the car, the rear panel and the top cover need to be assembled and welded. During the welding process, the angle of the rear panel and the top cover needs to be limited. The utility model patent with application number CN202321590199.9 (publication number CN219945941U) discloses a tooling fixture for the inner rear panel of an automobile, including a base plate, two vertical plates sliding on the top of the base plate, the two vertical plates being symmetrically arranged, a sliding mechanism for the two vertical plates being provided at the temporal part of the base plate, limiting frames being provided on opposite sides of the two vertical plates, rotating shafts being fixedly connected to the surfaces of the two limiting frames, first bushings being sleeved on the surfaces of the two rotating shafts, the two first bushings being sleeved inside the two vertical plates, a clamping mechanism being provided inside the two limiting frames, and a worm gear being rotatably connected to one side of one of the vertical plates, the worm gear being fixedly connected to one end of one of the rotating shafts; During the welding process, specific angle adjustments of 90 degrees and 180 degrees are usually required. The aforementioned patent can adjust the angle of the rear inner panel. However, the angle adjustment is uncontrollable and can only be judged by the naked eye, which will produce a large error. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamp for automobile rear panels. This clamp solves the technical problem that angle adjustment is required during the welding process, but the angle adjustment is uncontrollable and can only be judged by the naked eye, which can lead to large errors.

[0004] This utility model is implemented as follows: This utility model provides a clamp for a car rear panel, having a base plate, on which two upright plates are slidably connected. Each upright plate has a limiting frame on its opposite sides, and a rotating shaft is fixedly connected to the surface of each of the two limiting frames. Each of the two rotating shafts has a first bushing fitted onto its surface, and the two first bushings are fitted into the interior of the two upright plates. The left wall of the left-side upright plate is provided with a driving component that drives the limiting frame to rotate.

[0005] Based on the above technical solution, the clamp for the rear panel of an automobile can be further improved as follows: Furthermore, the driving component includes a grooved wheel and a dial that are rotatably connected to the vertical plate. The dial drives the grooved wheel to rotate at equal angles. The middle part of the grooved wheel is fixedly connected to the rotating shaft on the left side. The middle part of the dial is fixedly mounted on the worm gear through a connecting rod.

[0006] Furthermore, the grooved wheel has four annularly spaced concave locking arcs and radial grooves, the radial grooves being located between two adjacent concave locking arcs, and the dial having an outer concave locking arc, on which a round pin is fixedly installed via a connecting plate.

[0007] Furthermore, the worm gear is rotatably connected to the vertical plate, and a worm is provided below the worm gear to cooperate with it. Both ends of the worm are rotatably connected to the side plate. The side plate is fixedly installed on the left wall of the upright plate, and the two ends of the worm gear pass through the side plate. A crank handle is fixedly installed at the front end of the worm gear.

[0008] Furthermore, a gear is fixedly installed at the rear end of the worm gear, and a rack is provided below the gear for vertical sliding connection.

[0009] Furthermore, a threaded hole is provided on one side of the limiting frame, and a screw is threadedly connected to the threaded hole. A rotating wheel is fixedly installed at the end of the screw located outside the limiting frame, and a limiting block is rotatably connected to the end of the screw located inside the limiting frame.

[0010] Compared with the prior art, the advantages of the clamp for automobile rear panel provided by this utility model are: By setting a grooved wheel and a dial, the rotation of the dial can drive the grooved wheel to rotate 90 degrees each time, and the two rotation processes are intermittent, which makes it easy to adjust the angle. The dial can be locked to prevent the dial from moving the limit frame. By setting the screw and the limiting block to rotate, under the action of the guide rod, the screw will not drive the limiting block to rotate during the rotation process, but will drive the limiting block to move in a straight line, thus avoiding the limiting block rotating and moving downward to cause friction on the inner panel of the rear. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 A front view of a clamp used for the rear panel of a car; Figure 2 For the worm and its isometric drawing; Figure 3 Axonometric drawing of the Geneva wheel and dial; Figure 4 for Figure 2 and Figure 3 Overall side view; Figure 5 This is the main view of the limit frame; The components represented by each number in the attached diagram are listed below: 1. Base plate; 11. Vertical plate; 12. Side plate; 13. Slider; 2. Limiting frame; 21. Rotating shaft; 22. First bushing; 23. Threaded hole; 24. Screw; 25. Rotating wheel; 26. Limiting block; 27. Guide rod; 28. Through groove; 3. Grooved wheel; 31. Inner concave locking arc; 32. Radial groove; 4. Dial; 41. Outer concave locking arc; 42. Round pin; 43. Connecting plate; 5. Worm gear; 50. Connecting rod; 51. Worm; 52. Crank handle; 53. Gear; 54. Rack; 55. Cylinder. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] Example 1 like Figure 1-5 As shown, this utility model provides a clamp for the rear panel of an automobile, having a base plate 1, with two upright plates 11 slidably connected on the base plate 1, and limiting frames 2 respectively provided on opposite sides of the upright plates 11, with rotating shafts 21 fixedly connected to the surfaces of the two limiting frames 2, and first bushings 22 respectively sleeved on the surfaces of the two rotating shafts 21, and the two first bushings 22 respectively sleeved inside the two upright plates 11. The left wall of the left side plate 11 is provided with a driving component that drives the limit frame 2 to rotate.

[0019] Optionally, in the above technical solution, the driving component includes a grooved wheel 3 and a dial 4 rotatably connected to the vertical plate 11. The dial 4 drives the grooved wheel 3 to rotate at equal angles. The middle part of the grooved wheel 3 is fixedly connected to the left rotating shaft 21. The middle part of the dial 4 is fixedly mounted on the worm gear 5 through a connecting rod 50.

[0020] Optionally, in the above technical solution, the grooved wheel 3 has four annularly equidistant concave locking arcs 31 and radial grooves 32, the radial grooves 32 being located between two adjacent concave locking arcs 31, and the dial 4 has an outer concave locking arc 41, on which a round pin 42 is fixedly installed via a connecting plate 43.

[0021] Optionally, in the above technical solution, the worm gear 5 is rotatably connected to the vertical plate 11, and a worm 51 that cooperates with it is provided below the worm gear 5. Both ends of the worm 51 are rotatably connected to the side plate 12. The side plate 12 is fixedly installed on the left wall of the upright plate 11. The two ends of the worm gear 51 pass through the side plate 12, and the front end of the worm gear 51 is fixedly installed with a crank handle 52.

[0022] Optionally, in the above technical solution, a gear 53 is fixedly installed at the rear end of the worm 51, and a rack 54 is provided below the gear 53 for vertical sliding connection.

[0023] Furthermore, a cylinder 55 is fixedly installed on the lower left wall of the upright plate 11. The piston rod of the cylinder 55 extends upward and its end is fixedly connected to the bottom wall of the rack 54, with the teeth of the rack 54 facing upward. The cylinder 55 can move the rack 54 up and down. The cylinder 55 adopts an existing dual-shaft cylinder or a cylinder with a guide rod and is connected to an external air source.

[0024] Optionally, in the above technical solution, a threaded hole 23 is provided on one side of the limiting frame 2, and a screw 24 is threadedly connected to the threaded hole 23. A rotating wheel 25 is fixedly installed at one end of the screw 24 located outside the limiting frame 2, and a limiting block 26 is rotatably connected to the other end of the screw 24 located inside the limiting frame 2.

[0025] Furthermore, two through slots 28 are provided on the left end limiting frame 2. The through slots 28 are symmetrically arranged about the threaded hole 23 and a guide rod 27 is slidably connected inside. The length of the guide rod 27 is slightly greater than the length of the screw 24. One end of the guide rod 27 is fixedly installed on the limiting block 26, which can prevent the limiting block 26 from rotating.

[0026] Among them, the axes of the worm gear 5 and the worm 51 are arranged in a spatially perpendicular staggered manner.

[0027] One end of the connecting plate 43 is fixedly connected to the middle of the left end of the dial 4, and the other end is fixedly connected to the left end of the round pin 42.

[0028] In use, adjust the distance between the two upright plates 11, place the two ends of the inner rear panel of the car on the two limiting frames 2 (the two opposite sides of the limiting frames 2 are set vertically and parallel to the ground), rotate the rotating wheel 25 to drive the screw 24 to rotate within the limiting frame 2, and push the limiting block 26 down until the limiting block 26 and the limiting frame 2 clamp the two ends of the inner rear panel of the car. When it is necessary to rotate the rear panel of the car, the worm gear 51 is rotated in place by the crank handle 52, causing the worm wheel 5 meshing with it to rotate in place, and the dial 4 rotates in place along with the worm wheel 5. The pin 42 rotates in a circle around the center of the dial 4. Each rotation of the pin 42 engages with a radial groove 32, cutting into and out of the groove, causing the grooved wheel 3 to rotate 90 degrees. This rotation, via the rotating shaft 21, causes the limiting frame 2 to rotate the inner rear panel 90 degrees, facilitating angle adjustment during welding. When the pin 42 is not in the radial groove 32, the grooved wheel 3 remains stationary because its inner concave locking arc 31 is blocked by the outer concave locking arc 41 of the dial 4. When the pin 42 enters the inner concave locking arc 31, the outer concave locking arc 41 separates from the inner concave locking arc 31, allowing the pin 42 to drive the grooved wheel 3 to rotate. When the grooved wheel 3 rotates to the specified angle, the cylinder 55 pushes the rack 54 to move upward (when rotating to adjust the angle, the rack 54 and the gear 53 do not contact each other, and the top of its teeth is lower than the lowest end of the rack 54 teeth), so that the rack 54 meshes with the lower teeth of the gear 53, locking the worm 51 and preventing the worm 51 from rotating too much due to external force, causing the dial 4 to rotate; If the teeth at the lower end of gear 53 are not vertical, but offset at a certain angle, then fine-tuning the worm 51 will rotate gear 53 to the point where the lower teeth mesh with rack 54. Since the required stroke for the pin 42 to rotate from one radial groove 32 into another radial groove 32 is one revolution, the fine-tuning of the worm 51 will not cause the angle of the grooved wheel 3 to be adjusted.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamp for a car rear panel, comprising a base plate (1), wherein two upright plates (11) are slidably connected on the base plate (1), and limiting frames (2) are respectively provided on opposite sides of the upright plates (11), and rotating shafts (21) are respectively fixedly connected to the surfaces of the two limiting frames (2), and first bushings (22) are respectively sleeved on the surfaces of the two rotating shafts (21), and the two first bushings (22) are respectively sleeved inside the two upright plates (11); Its features are, The left wall of the left-side upright plate (11) is provided with a driving component that drives the limiting frame (2) to rotate.

2. A clamp for a car rear panel according to claim 1, characterized in that, The driving component includes a grooved wheel (3) and a dial (4) rotatably connected to the vertical plate (11). The dial (4) drives the grooved wheel (3) to rotate at equal angles. The middle part of the grooved wheel (3) is fixedly connected to the left rotating shaft (21). The middle part of the dial (4) is fixedly mounted on the worm gear (5) through a connecting rod (50).

3. A clamp for a car rear panel according to claim 2, characterized in that, The grooved wheel (3) has four annularly spaced concave locking arcs (31) and radial grooves (32). The radial grooves (32) are located between two adjacent concave locking arcs (31). The dial (4) has an outer concave locking arc (41). A round pin (42) is fixedly installed on the outer concave locking arc (41) by a connecting plate (43).

4. A clamp for a car rear panel according to claim 3, characterized in that, The worm gear (5) is rotatably connected to the vertical plate (11), and a worm (51) is provided below the worm gear (5) to cooperate with it. Both ends of the worm (51) are rotatably connected to the side plate (12). The side plate (12) is fixedly installed on the left wall of the upright plate (11), and the two ends of the worm (51) pass through the side plate (12). A crank (52) is fixedly installed at the front end of the worm (51).

5. A clamp for a car rear panel according to claim 4, characterized in that, A gear (53) is fixedly installed at the rear end of the worm (51), and a rack (54) is provided below the gear (53) for vertical sliding connection.

6. A clamp for a car rear panel according to claim 1, characterized in that, A threaded hole (23) is provided on one side of the limiting frame (2). A screw (24) is threadedly connected to the threaded hole (23). A rotating wheel (25) is fixedly installed at one end of the screw (24) outside the limiting frame (2). A limiting block (26) is rotatably connected to the other end of the screw (24) inside the limiting frame (2).

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