Shock absorber nut locking device

Abstract

The utility model discloses a shock absorber nut locking device which comprises a locking body, a driving assembly, a rotating disc and a locking assembly, the driving assembly is arranged in the locking body, and the driving assembly drives the rotating disc to rotate; the locking assembly comprises a connecting locking piece, a nut locking sleeve and a locking shaft tube, the nut locking sleeve is detachably connected with the rotating disc through the connecting locking piece, the locking shaft tube is arranged in the nut locking sleeve, and the locking shaft tube can vertically slide along the nut locking sleeve but cannot rotate around the vertical direction; a positioning hole used for being matched with a piston rod is formed in the lower end of the stop shaft tube. The nut tightening device can replace traditional manual nut tightening work, the stability of product quality can be guaranteed, the production cost is reduced, meanwhile, the labor intensity of manual operation is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, and particularly relates to a shock absorber nut locking device. Background Art

[0002] Automobile shock absorbers are important components of automobiles. The tightening method of the nuts of automobile shock absorbers directly affects the quality and assembly efficiency of automobile shock absorbers. At present, the automobile shock absorber and the spring are assembled together to reduce the vibration during the driving of the automobile. The spring needs to be sleeved on the shock absorber. The lower end of the spring is restricted by the spring disc, and the lower end of the spring is restricted by the top end. During production, the top end and the threaded section at the upper end of the piston rod of the shock absorber are locked by a nut. However, due to the special structure of the shock absorber, there is no radial fixing position on the piston rod. The piston connected to the lower end of the piston rod slides up and down in the shock absorber cylinder, resulting in a special nut locking method. When the nut is rotated and locked, it is required that the piston rod of the shock absorber is fixed and cannot rotate. At present, it is all carried out by manual double wrenches. This not only increases the labor intensity of workers and reduces the production efficiency, but also makes it difficult to guarantee the product quality. The pre-tightening force and locking stroke of the nut are inconsistent, and even the phenomenon of falling off occurs. The above situation ultimately results in low product assembly efficiency and unstable product quality. Content of the Utility Model

[0003] The purpose of the utility model is to provide a shock absorber nut locking device, aiming at solving the problems of low product assembly efficiency and unstable product quality caused by manual operation in the existing shock absorber nut locking.

[0004] In order to achieve the above purpose, the utility model discloses a shock absorber nut locking device, which comprises a locking body, a driving assembly, a rotating disc and a locking assembly. The driving assembly is arranged in the locking body, and the driving assembly drives the rotating disc to rotate. The locking assembly includes a connecting locking piece, a nut locking sleeve and a stop shaft tube. The nut locking sleeve is detachably connected with the rotating disc through the connecting locking piece. The stop shaft tube is arranged in the nut locking sleeve. The stop shaft tube can slide vertically along the nut locking sleeve but cannot rotate around the vertical direction. A positioning hole for cooperating with the piston rod is arranged at the lower end of the stop shaft tube.

[0005] Preferably, the connecting locking piece includes a connecting sleeve. An edge extends outward from the upper part of the nut locking sleeve. Internal threads are arranged on the inner wall of the connecting sleeve. External threads are arranged on the outer wall of the lower part of the rotating disc. The connecting sleeve is provided with a clamping portion extending inward. The edge abuts against the clamping portion, and the external threads are screwed with the internal threads.

[0006] Preferably, the locking assembly further includes a locking sleeve. An accommodation cavity and a nut locking cavity which are communicated in sequence from top to bottom are arranged in the nut locking sleeve. The cross-section of the accommodation cavity is in a T shape. The locking sleeve is arranged at the upper part of the accommodation cavity. The stop shaft tube passes through the accommodation cavity and extends into the nut locking cavity. The inner wall of the locking sleeve and the outer wall of the stop shaft tube are engaged through gears. The stop shaft tube can slide vertically along the locking sleeve but cannot rotate around the vertical axis.

[0007] Preferably, a return spring is further included. The cross-section of the stop shaft tube is in a T shape. The stop shaft tube is sleeved in the accommodation cavity. The upper part of the stop shaft tube extends outwards to form an abutting part. The abutting part is arranged at the upper part of the accommodation cavity. The lower part of the stop shaft tube is arranged at the lower part of the accommodation cavity. The upper and lower ends of the return spring respectively abut against the rotating disc and the stop shaft tube; the inner wall of the locking sleeve and the outer wall of the abutting part are engaged through gears.

[0008] Preferably, a wire harness protection tube is further included. A through hole penetrating through the upper and lower end faces thereof is arranged on the rotating disc. The wire harness protection tube sequentially passes through the through hole, the nut locking sleeve and the stop shaft tube.

[0009] The beneficial effects of the present utility model are as follows: For a shock absorber nut locking device provided by the above technical solution, when locking the nut, the positioning hole of the stop shaft tube is inserted into the piston rod of the shock absorber, so as to lock the piston rod and prevent the piston rod from rotating; the driving assembly drives the rotating disc to rotate, drives the nut locking sleeve to rotate, and the nut locking sleeve locks the nut; the present utility model can replace the traditional manual nut tightening work, can ensure the stability of product quality, reduce the production cost while reducing the labor intensity of manual operation and improving the production efficiency.

[0010] Through the following description and in combination with the drawings, the present utility model will become clearer. These drawings are used to explain the embodiments of the present utility model. Description of the Drawings

[0011] Figure 1 Shown is a three-dimensional view of the shock absorber nut locking device and the piston rod of the shock absorber.

[0012] Figure 2 Shown is a cross-sectional view of the rotating disc and the locking assembly.

[0013] Figure 3 Shown is a cross-sectional view after the rotating disc, the locking sleeve, the nut locking sleeve, the stop shaft tube and the connecting sleeve are separated. Detailed Embodiment

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The role of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0015] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0016] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0017] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0018] Reference Figures 1 to 3, a shock absorber nut locking device, comprising a locking body 100, a driving assembly, a rotating disk 200, and a locking assembly. The driving assembly is arranged inside the locking body 100, and the driving assembly drives the rotating disk 200 to rotate. The locking assembly includes a connecting locking member, a nut locking sleeve 300, and a stop shaft tube 400. The nut locking sleeve 300 is detachably connected to the rotating disk 200 through the connecting locking member. The stop shaft tube 400 is arranged inside the nut locking sleeve 300. The stop shaft tube 400 can slide vertically along the nut locking sleeve 300 but cannot rotate around the vertical axis. A positioning hole 420 for cooperating with the piston rod is provided at the lower end of the stop shaft tube 400. The driving assembly is arranged inside the locking body 100. The driving assembly may include a servo motor and a speed reducer connected to the output end of the servo motor. The rotating disk 200 is connected to the output end of the speed reducer. A threaded section 610 is provided at the upper part of the piston rod 600 of the shock absorber. A nut 620 is screwed onto the threaded section 610. When locking the nut 620, the positioning hole 420 of the stop shaft tube 400 is inserted into the piston rod 600 of the shock absorber, thereby locking the piston rod 600 to prevent the piston rod 600 from rotating. The driving assembly drives the rotating disk 200 to rotate, driving the nut locking sleeve 300 to rotate, and the nut locking sleeve 300 locks the nut 620. The utility model can replace the traditional manual nut tightening work, ensure the stability of product quality, reduce production costs, reduce the labor intensity of manual operation, and improve production efficiency. In addition, for different shock absorbers, the sizes of the piston rod 600 and the nut 620 may be different. Therefore, multiple sets of stop shaft tubes 400 and nut locking sleeves 300 can be provided. The positioning holes 420 on the stop shaft tubes 400 have different sizes, and the nut locking cavities 320 inside the nut locking sleeves 300 have different sizes. When it is necessary to replace different piston rods 600 and nuts 620, by disassembling the connecting locking member, the nut locking sleeve 300 can be separated from the rotating disk 200, select the nut locking cavity 320 and positioning hole 420 with appropriate sizes, and then fix and connect the nut locking sleeve 300 to the rotating disk 200 through the connecting locking member.

[0019] In one embodiment, the connecting locking member includes a connecting sleeve 210. An edge 310 extends outward from the upper part of the nut locking sleeve 300. Internal threads are provided on the inner wall of the connecting sleeve 210, and external threads are provided on the outer wall of the lower part of the rotating disk 200. The connecting sleeve 210 is provided with a clamping portion 211 extending inward. The edge 310 abuts against the clamping portion 211, and the external threads are screwed with the internal threads. The edge 310 abuts against the clamping portion 211, and the external threads are screwed with the internal threads, which can realize the quick connection or disassembly of the nut locking sleeve 300 and the rotating disk 200. The structure is simple, and the installation and disassembly are relatively easy.

[0020] In one embodiment, the locking assembly further includes a locking sleeve 500. An accommodating cavity 330 and a nut locking cavity 320 which are sequentially communicated are formed in the nut locking sleeve 300 from top to bottom. The cross section of the accommodating cavity 330 is in a T shape. The locking sleeve 500 is arranged at the upper part of the accommodating cavity 330. The stop shaft tube 400 passes through the accommodating cavity 330 and extends into the nut locking cavity 320. The inner wall of the locking sleeve 500 and the outer wall of the stop shaft tube 400 are engaged by gears. The stop shaft tube 400 can slide vertically along the locking sleeve 500 but cannot rotate around the vertical direction. When locking the nut 620, the positioning hole 420 of the stop shaft tube 400 is inserted into the piston rod 600 of the shock absorber. The nut 620 on the piston rod 600 jacks up the stop shaft tube 400. The stop shaft tube 400 slides vertically upward along the locking sleeve 500. Since the inner wall of the locking sleeve 500 and the outer wall of the stop shaft tube 400 are engaged by gears, the stop shaft tube 400 can slide vertically along the locking sleeve 500 but cannot rotate around the vertical direction, so as to lock the piston rod 600 and prevent the piston rod 600 from rotating.

[0021] In one embodiment, a return spring 510 is further included. The cross section of the stop shaft tube 400 is in a T shape. The stop shaft tube 400 is sleeved in the accommodating cavity 330. The upper part of the stop shaft tube 400 extends outward to form an abutting portion 410. The abutting portion 410 is arranged at the upper part of the accommodating cavity 330. The lower part of the stop shaft tube 400 is arranged at the lower part of the accommodating cavity 330. The upper and lower ends of the return spring 510 respectively abut against the rotating disc 200 and the stop shaft tube 400. The inner wall of the locking sleeve 500 and the outer wall of the abutting portion 410 are engaged by gears. When locking the nut 620, the positioning hole 420 of the stop shaft tube 400 is inserted into the piston rod 600 of the shock absorber. The nut 620 on the piston rod 600 jacks up the stop shaft tube 400. The stop shaft tube 400 compresses the return spring 510 and slides vertically upward along the locking sleeve 500. After the nut locking sleeve 300 locks the nut 620, the piston rod 600 is released from the positioning hole 420 of the stop shaft tube 400. Under the elastic force of the return spring 510, the stop shaft tube 400 moves downward to reset. Since the upper part of the stop shaft tube 400 extends outward to form an abutting portion 410, the abutting portion 410 is arranged at the upper part of the accommodating cavity 330, and the lower part of the stop shaft tube 400 is arranged at the lower part of the accommodating cavity 330, the abutting portion 410 of the stop shaft tube 400 is locked and positioned by the accommodating cavity 330 in a T shape, so as to prevent the stop shaft tube 400 from passing through the accommodating cavity 330 and the nut locking cavity 320 and falling off from the nut locking sleeve 300.

[0022] In one embodiment, it further includes a wire harness protection tube 110. A through hole penetrating the upper and lower end faces is provided on the rotating disk 200, and the wire harness protection tube 110 sequentially passes through the through hole, the nut locking sleeve 300, and the stop shaft tube 400. For the magnetorheological shock absorber, its piston rod 600 has a hollow structure, and a wire 630 is connected to the piston inside the shock absorber. The wire 630 is led out through the hollow piston rod 600. When locking the nut 620 on the piston rod 600 of the magnetorheological shock absorber, it is necessary to protect the wire 630. The wire harness protection tube 110 is provided. The wire harness protection tube 110 sequentially passes through the through hole, the nut locking sleeve 300, and the stop shaft tube 400. First, pass the wire 630 through the wire harness protection tube 110, and then proceed to the next step of locking the nut 620.

[0023] The foregoing disclosed content is only the preferred embodiment of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A shock absorber nut locking device, characterized in that, It includes a locking body, a drive assembly, a rotating disk, and a locking assembly. The drive assembly is arranged inside the locking body, and the drive assembly drives the rotating disk to rotate. The locking assembly includes a connecting locking member, a nut locking sleeve, and a stop shaft tube. The nut locking sleeve is detachably connected to the rotating disk through the connecting locking member. The stop shaft tube is arranged inside the nut locking sleeve. The stop shaft tube can slide vertically along the nut locking sleeve but cannot rotate around the vertical axis. A positioning hole for cooperating with the piston rod is provided at the lower end of the stop shaft tube.

2. The shock absorber nut locking device according to claim 1, characterized in that, The connecting locking member includes a connecting sleeve. An edge extends outward from the upper part of the nut locking sleeve. Internal threads are provided on the inner wall of the connecting sleeve. External threads are provided on the outer wall of the lower part of the rotating disk. The connecting sleeve is provided with a clamping portion extending inward. The edge abuts against the clamping portion, and the external threads are screwed with the internal threads.

3. A shock absorber nut locking device according to claim 1, characterized in that, The locking assembly further includes a locking sleeve. A receiving cavity and a nut locking cavity that are sequentially communicated are provided in the nut locking sleeve from top to bottom. The cross-section of the receiving cavity is in a T shape. The locking sleeve is arranged in the upper part of the receiving cavity. The stop shaft tube passes through the receiving cavity and extends into the nut locking cavity. The inner wall of the locking sleeve and the outer wall of the stop shaft tube are engaged through gears. The stop shaft tube can slide vertically along the locking sleeve but cannot rotate around the vertical axis.

4. The shock absorber nut locking device according to claim 3, characterized in that, It further includes a return spring. The cross-section of the stop shaft tube is in a T shape. The stop shaft tube is sleeved inside the receiving cavity. An abutting portion extends outward from the upper part of the stop shaft tube. The abutting portion is arranged in the upper part of the receiving cavity. The lower part of the stop shaft tube is arranged in the lower part of the receiving cavity. The upper and lower ends of the return spring respectively abut against the rotating disk and the stop shaft tube. The inner wall of the locking sleeve and the outer wall of the abutting portion are engaged through gears.

5. The shock absorber nut locking device according to claim 1, characterized in that, It further includes a wire harness protection tube. A through hole penetrating the upper and lower end faces is provided on the rotating disk. The wire harness protection tube sequentially passes through the through hole, the nut locking sleeve, and the stop shaft tube.

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