An automobile accessory fixing device
The four-point clamping fixing device solves the problems of poor adaptability and unstable clamping of traditional fixing devices, realizes stable positioning and radial stability of shafts, and improves processing quality and equipment adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUSHUN HUASHENG AUTOMOTIVE PARTS CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional automotive parts fixing devices lack flexibility, making it difficult to adapt to shaft parts of different specifications, and the clamping is unstable, resulting in decreased processing quality and reduced equipment precision.
The four-point clamping device achieves self-centering clamping of the shaft through the moving component and the elastic limiting component, providing good radial stability and torsional resistance, and is suitable for automotive parts of different specifications.
It achieves stable positioning and fixation of shaft components, improves processing quality and equipment adaptability, reduces equipment downtime and production costs, and protects the surface quality of parts.
Smart Images
Figure CN224587851U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts processing technology, and specifically relates to an automotive parts fixing device. Background Technology
[0002] In the automotive parts manufacturing industry, precise, efficient, and adaptable fixing devices are crucial for ensuring product quality and improving production efficiency. As a highly complex mechanical system, the machining precision of each component in a car directly affects the overall vehicle's performance, safety, and reliability. Shaft components, as core components for power transmission and motion control in automobiles, have extremely high requirements for fixing during the machining process.
[0003] The rapid development of the automotive industry has led to an increasing diversity in the specifications of shaft components. Components from different car models and production batches exhibit significant differences in diameter, length, and shape. Traditional mounting devices are mostly custom-made for specific component specifications, lacking flexibility. When processing components of different specifications, it is often necessary to replace the entire mounting device or perform complex readjustments. This not only prolongs equipment downtime and increases production costs but also easily leads to a decrease in equipment precision due to frequent replacements and adjustments. For example, in automotive parts manufacturing companies, in order to process various steering shaft models, it is necessary to stock multiple different specifications of mounting devices, occupying a significant amount of equipment resources and production space.
[0004] Furthermore, traditional fixing methods are significantly insufficient in providing stable clamping force. Shaft components are subjected to various cutting forces, vibrations, and other external forces during machining. Some simple fixing devices, using single-point or two-point clamping, cannot effectively balance these external forces, easily leading to slight displacement or wobbling of the components during machining. This unstable fixing state will degrade the surface quality of the machined components, causing defects such as ripples and vibration marks, severely affecting the performance and service life of the components. For example, in the grinding of precision shaft components, unstable fixing may lead to increased surface roughness and reduced fitting accuracy between the components and other parts.
[0005] Meanwhile, traditional clamping devices also have shortcomings in protecting the surface of components. During the clamping process, the rigid clamping components are in direct contact with the surface of the components, which can easily generate large pressure, leading to damage such as indentations and scratches on the surface of the components. For some shaft components with extremely high requirements for surface quality, such as high-precision shafts used in aero engines, these minor damages can become stress concentration points, reducing the fatigue strength of the components and affecting their reliability under high load and high speed conditions.
[0006] To address this, we propose an automotive parts fixing device that not only automatically positions the shaft at the device center, but also provides good radial stability and torsional resistance through four-point clamping, and can adapt to automotive parts of different specifications. Utility Model Content
[0007] The purpose of this utility model is to provide an automotive parts fixing device that can automatically position the shaft at the center of the device, while providing good radial stability and torsional resistance through four-point clamping, and can adapt to automotive parts of different specifications.
[0008] The specific technical solution adopted by this utility model is as follows:
[0009] A car accessory fixing device includes a base, a groove is provided on the top of the base, a movable component is provided inside the groove, a connecting frame is provided on the movable component, and a clamping and fixing component is provided on one side of the connecting frame;
[0010] The clamping and fixing assembly includes a rectangular plate disposed on the connecting frame. The rectangular plate has four first rectangular slots and one second rectangular slot. Each first rectangular slot is provided with a pulling component. A clamping plate for clamping the shaft fitting is disposed on one side of the pulling component. Multiple elastic limiting components are disposed on the clamping plate. A sliding plate that contacts one end of the shaft fitting is slidably disposed in the second rectangular slot. A movable plate is hinged to one end of the sliding plate. The end of the movable plate away from the sliding plate is hinged to the pulling component.
[0011] Furthermore, the moving component includes a rotating rod disposed on the slide groove, the rotating rod having opposite threads, and a matching threaded sleeve disposed on the opposite threads, the top of the threaded sleeve being connected to the connecting frame, and a motor being disposed on the base, the output end of the motor being connected to the rotating rod.
[0012] Furthermore, the pulling assembly includes a fixed shaft disposed inside the first rectangular groove, a slider slidably disposed on the fixed shaft, one end of the slider being hinged to the movable plate, and the other end of the slider being connected to the clamping plate.
[0013] Furthermore, the elastic limiting component includes a movable hole formed in the clamping plate, a limiting rod is movably disposed inside the movable hole, a limiting plate is disposed on the top of the limiting rod, and a spring is sleeved on the limiting rod, one end of the spring is connected to the limiting plate, and the other end of the spring is connected to the clamping plate.
[0014] Furthermore, the four sets of limiting rods are divided into transverse rods and longitudinal rods, and the transverse rods and the longitudinal rods are arranged alternately.
[0015] Furthermore, the bottom of the limiting rod is provided with anti-slip texture.
[0016] Furthermore, the sliding plate is matched with the second rectangular groove.
[0017] The technical effects achieved by this utility model are as follows:
[0018] First, the shaft assembly is placed between two sliding plates. Then, the rectangular plates are moved relative to each other by the moving assembly. During this movement, the shaft assembly pushes against the sliding plate and moves inside the second rectangular groove. The sliding plate moves backward, driving the movable plate through the hinge point. The movable plate translates around its hinge point with the sliding plate, and the end of the movable plate away from the sliding plate (hinged with the pulling assembly) moves accordingly. This pulls (or pushes, depending on the design) the pulling assembly connected to it, which slides within its first rectangular groove. The movement of the pulling assembly directly drives the clamping plate connected to it to move linearly towards the center of the device (i.e., the shaft). Since all four pulling assemblies are linked through the movable plate, the four clamping plates will synchronously contract towards the center. The elastic limiting components on the four clamping plates eventually contact and press against the cylindrical surface (or specific contour) of the shaft simultaneously, achieving stable, self-centering clamping. The elastic limiting components provide flexible contact and the necessary clamping force. At this point, one end of the shaft is held by the sliding plate (axial positioning), and the four sides are firmly clamped by the four clamping plates with elastic limiting components (radial positioning and fixing). This device can not only automatically position the shaft at the center of the device, but also provides good radial stability and torsional resistance with four-point clamping. In addition, it can adapt to different specifications of automotive parts. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a structural schematic diagram of the present invention when fixing shaft system accessories;
[0021] Figure 3 This is a schematic diagram of the structure of the mobile component of this utility model;
[0022] Figure 4 This is a schematic diagram of the rectangular block structure of this utility model.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1. Base; 2. Slide groove; 3. Connecting frame; 4. Rectangular plate; 5. First rectangular groove; 6. Second rectangular groove; 7. Clamping plate; 8. Sliding plate; 9. Movable plate; 10. Rotating rod; 11. Threaded sleeve; 12. Motor; 13. Fixed shaft; 14. Slider; 15. Limiting rod; 16. Spring. Detailed Implementation
[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0026] like Figures 1-4 As shown, an automotive parts fixing device includes a base 1, a groove 2 is provided on the top of the base 1, a movable component is provided inside the groove 2, a connecting frame 3 is provided on the movable component, and a clamping fixing component is provided on one side of the connecting frame 3.
[0027] The clamping and fixing assembly includes a rectangular plate 4 mounted on the connecting frame 3. The rectangular plate 4 has four first rectangular slots 5 and one second rectangular slot 6. Each rectangular slot is equipped with a pulling component. A clamping plate 7 for clamping the shaft fitting is mounted on one side of the pulling component. Multiple elastic limiting components are mounted on the clamping plate 7. A sliding plate 8 that contacts one end of the shaft fitting is slidably mounted in the second rectangular slot 6. A movable plate 9 is hinged to one end of the sliding plate 8. The end of the movable plate 9 away from the sliding plate 8 is hinged to the pulling component.
[0028] The movable component includes a rotating rod 10 disposed on the slide 2. The rotating rod 10 has a reverse thread, and a matching threaded sleeve 11 is disposed on the reverse thread. The top of the threaded sleeve 11 is connected to the connecting frame 3, and a motor 12 is disposed on the base 1. The output end of the motor 12 is connected to the rotating rod 10.
[0029] The motor 12 drives the rotating rod 10 to rotate, thereby causing the two threaded sleeves 11 to drive the rectangular plate 4 to move in opposite directions.
[0030] Meanwhile, the pulling component includes a fixed shaft 13 disposed inside the first rectangular groove 5, and a slider 14 is slidably disposed on the fixed shaft 13. One end of the slider 14 is hinged to the movable plate 9, and the other end of the slider 14 is connected to the clamping plate 7.
[0031] When the sliding plate 8 moves, it drives the movable plate 9 to move and rotate. The movable plate 9 drives the slider 14 to move downward inside the first rectangular groove 5, thereby driving the clamping plate 7 to move downward to work.
[0032] The elastic limiting assembly includes a movable hole formed in the clamping plate 7. A limiting rod 15 is movably disposed inside the movable hole. A limiting plate is provided on the top of the limiting rod 15, and a spring 16 is sleeved on the limiting rod 15. One end of the spring 16 is connected to the limiting plate, and the other end of the spring 16 is connected to the clamping plate 7. When the shaft fittings come into contact with the limiting rod 15, the limiting rod 15 moves upward inside the movable hole and stretches the spring 16, so that multiple sets of limiting rods 15 can adapt to the shape of shaft fittings of different diameters and specifications, and are fixed and limited by the reaction action of the spring 16.
[0033] The spring constant of spring 16 can be selected according to Hooke's law. At the same time, it can overcome the reaction force generated during processing. A damping spring can be selected, which is existing technology and will not be elaborated on here.
[0034] The four sets of limiting rods 15 are divided into transverse rods and longitudinal rods, which are arranged alternately. This arrangement allows both the transverse rods and the limiting rods 15 to contact the shaft system components, thereby performing transverse and longitudinal limiting.
[0035] The bottom of the limiting rod 15 is provided with anti-slip texture, which can increase friction and improve the effect of fixing and limiting.
[0036] The sliding plate 8 is matched with the second rectangular groove 6. Matching means that the sliding plate 8 can slide smoothly inside the second rectangular groove 6 without any jamming.
[0037] The working principle of this utility model is as follows: First, the shaft fitting is placed between two sliding plates 8. Then, the rectangular plate 4 is moved relative to the shaft fitting by the moving component. During the movement, the shaft fitting moves against the sliding plate 8 inside the second rectangular groove 6. The sliding plate 8 moves backward, driving the movable plate 9 to move through the hinge point. The movable plate 9 translates around its hinge point with the sliding plate 8. The end of the movable plate 9 away from the sliding plate 8 (hinged with the pulling component) moves accordingly, pulling (or pushing, depending on the design) the pulling component connected to it to slide in its first rectangular groove 5. The movement of the pulling component directly drives the clamping plate 7 connected to it to move linearly towards the center of the device (i.e., the shaft). Since all four pulling components are linked through the movable plate 9, the four clamping plates 7 will move synchronously and towards the center. The elastic limiting components on the four clamping plates 7 will eventually contact and press the cylindrical surface (or specific contour) of the shaft at the same time, achieving stable and self-centering clamping. The elastic limiting components provide flexible contact and the necessary clamping force. At this time, one end of the shaft is held in place by the sliding plate 8 (axial positioning), and the four clamping plates 7 with elastic limiting components are firmly clamped around it (radial positioning and fixation). This device can not only automatically position the shaft in the center of the device, but also provide good radial stability and torsional resistance with four-point clamping. In addition, it can adapt to different specifications of automotive parts.
[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A car parts fixing device, comprising a base (1), wherein a groove (2) is provided on the top of the base (1), a movable component is provided inside the groove (2), a connecting frame (3) is provided on the movable component, and a clamping fixing component is provided on one side of the connecting frame (3); characterized in that The clamping and fixing assembly includes a rectangular plate (4) disposed on the connecting frame (3). The rectangular plate (4) has four first rectangular slots (5) and one second rectangular slot (6). Each first rectangular slot (5) is provided with a pulling assembly. A clamping plate (7) for clamping the shaft fitting is disposed on one side of the pulling assembly. Multiple elastic limiting components are disposed on the clamping plate (7). A sliding plate (8) that contacts one end of the shaft fitting is slidably disposed in the second rectangular slot (6). A movable plate (9) is hinged to one end of the sliding plate (8). The end of the movable plate (9) away from the sliding plate (8) is hinged to the pulling assembly.
2. The device of claim 1, wherein: The moving component includes a rotating rod (10) disposed in the slide (2), the rotating rod (10) having opposite threads, and a matching threaded sleeve (11) disposed on the opposite threads, the top of the threaded sleeve (11) being connected to the connecting frame (3), and a motor (12) disposed on the base (1), the output end of the motor (12) being connected to the rotating rod (10).
3. The device of claim 1, wherein: The pulling assembly includes a fixed shaft (13) disposed inside the first rectangular groove (5), and a slider (14) is slidably disposed on the fixed shaft (13). One end of the slider (14) is hinged to the movable plate (9), and the other end of the slider (14) is connected to the clamping plate (7).
4. The device of claim 1, wherein: The elastic limiting component includes a movable hole opened on the clamping plate (7), a limiting rod (15) is movably arranged inside the movable hole, a limiting plate is provided on the top of the limiting rod (15), and a spring (16) is sleeved on the limiting rod (15). One end of the spring (16) is connected to the limiting plate, and the other end of the spring (16) is connected to the clamping plate (7).
5. The device of claim 4, wherein: The four sets of limiting rods (15) are divided into transverse rods and longitudinal rods, and the transverse rods and the longitudinal rods are arranged alternately.
6. The device of claim 4, wherein: The bottom of the limiting rod (15) is provided with anti-slip texture.
7. The device of claim 1, wherein: The sliding plate (8) is matched with the second rectangular groove (6).