Roller center shaft fixing mechanism

Abstract

The utility model discloses an idler wheel center shaft fixing mechanism which comprises an idler wheel shaft, an idler wheel and a guide rail, the idler wheel is installed between the idler wheel shaft and the guide rail, a door plate is arranged below the guide rail, the idler wheel shaft penetrates through the guide rail and the door plate, and the idler wheel shaft comprises a first installation portion and a second installation portion. The section of the first mounting part is provided with pressing rivet features or the first mounting part is provided with threads, the first mounting part is matched with the guide rail for mounting through the pressing rivet features or the threads, and the second mounting part penetrates through the door plate and then is fixed through a mounting nut. The idler wheel is fixed on the guide rail of the lifter through the idler wheel shaft, the guide rail is fixed on the vehicle door, the function of a guide rail installation shaft is integrated on the idler wheel installation shaft, the idler wheel shaft has the function of fixing the guide rail through reasonable arrangement and matching characteristics, and the idler wheel can be rotatably fixed on the guide rail. And meanwhile, the guide rail is completely fixed on the door plate in a constraint manner, and the detachability of the guide rail and the anti-reverse rotation of the roller shaft need to be ensured.

Description

Technical Field

[0001] This utility model relates to a fixing mechanism, and more particularly to a roller center shaft fixing mechanism. Background Technology

[0002] In today's automotive industry, lightweighting and integration are key focuses for all car manufacturers, making the lightweighting and integration of numerous components a major industry challenge. Key components within car doors include window regulators, door locks, and speakers. Many current models integrate these into the door module, optimizing the interior space and effectively reducing door weight. Traditionally, window regulator plastic rails are bolted to the door panel, and the rollers on these rails are secured using roller axles, brackets, and screws, a relatively complex fixing method. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a roller center shaft fixing mechanism, so that the roller shaft has the function of fixing the guide rail, and the roller can be rotatably fixed on the guide rail.

[0004] Technical solution: This utility model includes a roller shaft, a roller, and a guide rail. A roller is installed between the roller shaft and the guide rail. A door panel is provided below the guide rail. The roller shaft passes through the guide rail and the door panel. The roller shaft includes a first mounting part and a second mounting part. The cross-section of the first mounting part is arranged with riveting features or is provided with threads. The first mounting part is installed with the guide rail through the riveting features or threads. The second mounting part passes through the door panel and is fixed by a mounting nut.

[0005] The guide rail includes a mounting plate, and the first mounting part of the roller shaft is pressed and riveted to the mounting plate, thereby connecting the roller and the plastic guide rail through the roller shaft.

[0006] The bottom surface of the mounting plate contacts and engages with the door panel to install the plastic guide rail onto the door panel.

[0007] The guide rail includes a nut, and the first mounting part of the roller shaft is screwed into the nut, thereby connecting the roller and the plastic guide rail through the roller shaft.

[0008] The bottom surface of the nut contacts and engages with the door panel, thereby installing the plastic guide rail onto the door panel.

[0009] A gap is left between the guide rail and the door panel.

[0010] The second mounting part is provided with threads, which are fixed with the mounting nut to install the plastic guide rail on the door panel.

[0011] The first mounting part has a shaft part and a shaft cap part on its top.

[0012] Beneficial effects: This utility model has the following advantages:

[0013] (1) The roller is fixed to the lifter guide rail by the roller shaft, and the guide rail is fixed to the door. The function of the guide rail mounting shaft is integrated into the roller mounting shaft. By reasonably arranging the matching features, the roller shaft has the function of fixing the guide rail, and the roller can be rotatably fixed to the guide rail. At the same time, the guide rail is completely constrained and fixed to the door panel. It is also necessary to ensure the detachability of the guide rail and the anti-reverse rotation of the roller shaft. This design can reduce the number of required parts and improve the installation efficiency, thereby greatly reducing the manufacturing cost of the lifter.

[0014] (2) While changing its integration method, this utility model uses plastic guide rails, which has certain advantages in terms of lightweighting and can create more possibilities for reasonable layout, effectively reducing the number of parts and saving manufacturing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of the roller shaft in Example 1;

[0017] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0018] Figure 4 This is a schematic diagram of the roller shaft in Example 2. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Example 1

[0021] like Figure 1 As shown, the roller center shaft fixing mechanism of this embodiment is used for a car window regulator, including a roller shaft 1, a roller 2, and a plastic guide rail 3. The plastic guide rail 3 includes a plastic-coated metal mounting plate 31. The roller 2 is installed between the roller shaft 1 and the plastic guide rail 3. A door panel 5 is provided below the plastic guide rail 3. The roller shaft 1 passes through the plastic guide rail 3 and the door panel 5. A gap is left between the plastic guide rail 3 and the door panel 5. The plastic-coated metal mounting plate 31 contacts and engages with the door panel 5, thereby installing the plastic guide rail 3 on the door panel 5.

[0022] like Figure 2As shown, the roller shaft 1 includes a shaft cap 11, a shaft rod 12, a first mounting part 13, and a second mounting part 14. The cross-section of the first mounting part 13 is arranged with riveting features 15. The riveting features 15 are commercially available products. The first mounting part 13 is installed by engaging with the plastic-coated metal mounting plate 31 of the guide rail through the riveting features 15. The surface of the second mounting part 14 is provided with threads. After the second mounting part 14 passes through the plastic guide rail 3 and the door panel 5, it is fixed by the mounting nut 6, thereby installing the plastic guide rail 3 on the door panel 5.

[0023] Working principle: First, the roller 2 is fixed between the plastic guide rail 3 and the cap 11 of the roller shaft 1 via the roller shaft 1. The first mounting part 13 of the roller shaft 1 has a riveting feature 15 at its end. The roller shaft 1 is riveted to the plastic-coated metal mounting plate 31 in the guide rail using the riveting feature 15, thereby connecting the roller 2 and the plastic guide rail 3 through the roller shaft 1. This utility model integrates the guide rail mounting bolts onto the roller shaft, reducing the number of sub-parts of the lifter, simplifying the assembly process, shortening the production cycle, and shortening the guide rail length, thereby reducing the weight of the lifter, greatly reducing costs, improving the utilization rate of the door space, and facilitating the arrangement of other parts inside the door.

[0024] Secondly, the second mounting part 14 of the roller shaft 1 is provided with threads. The second mounting part 14 of the roller shaft 1 is passed through the mounting hole on the door panel 5 and fixed by the mounting nut 6. A gap is left between the plastic guide rail 3 and the door panel 5. The plastic-coated metal mounting plate 31 contacts and engages with the door panel 5, thereby installing the plastic guide rail 3 on the door panel 5.

[0025] Example 2

[0026] like Figure 3 As shown, the roller center shaft fixing mechanism of this embodiment is used for a car window regulator, including a roller shaft 1, a roller 2 and a plastic guide rail 3. The plastic guide rail 3 includes a plastic-coated nut 32. The roller 2 is installed between the roller shaft 1 and the plastic guide rail 3. A door panel 5 is provided below the plastic guide rail 3. The roller shaft 1 passes through the plastic guide rail 3 and the door panel 5. A gap is left between the plastic guide rail 3 and the door panel 5. The plastic-coated nut 32 contacts and engages with the door panel 5, thereby installing the plastic guide rail 3 on the door panel 5.

[0027] like Figure 4 As shown, the roller shaft 1 includes a cap portion 11, a shaft portion 12, a first mounting portion 13, and a second mounting portion 14. The first mounting portion 13 and the second mounting portion 14 are threaded. The thread on the surface of the first mounting portion 13 engages with a plastic-coated nut 32, allowing the roller shaft 1 to be screwed into the plastic-coated nut 32, thereby connecting the roller 2 and the plastic guide rail 3 via the roller shaft 1. The second mounting portion 14 passes through the plastic guide rail 3 and the door panel 5, and is then fixed by a mounting nut 6, thereby mounting the plastic guide rail 3 onto the door panel 5.

[0028] Working principle:

[0029] First, the roller 2 is fixed between the plastic guide rail 3 and the shaft cap 11 of the roller shaft 1 via the roller shaft 1. The end of the first mounting part 13 of the roller shaft 1 is provided with a thread feature. The roller shaft 1 is screwed into the plastic-coated nut 32, thereby connecting the roller 2 and the plastic guide rail 3 through the roller shaft 1.

[0030] Secondly, the second mounting part 14 of the roller shaft 1 is provided with threads. The second mounting part 14 of the roller shaft 1 is passed through the mounting hole on the door panel 5 and fixed by the mounting nut 6. A gap is left between the plastic guide rail 3 and the door panel 5. The plastic-coated metal mounting plate 31 contacts and engages with the door panel 5, thereby installing the plastic guide rail 3 on the door panel 5.

[0031] This utility model uses a roller shaft to fix the roller to the lifter guide rail, and the guide rail to the car door. The function of the guide rail mounting shaft is integrated into the roller mounting shaft. Through reasonable arrangement of matching features, the roller shaft has the function of fixing the guide rail and can rotatably fix the roller to the guide rail. At the same time, the guide rail is completely constrained and fixed to the door panel. It is also necessary to ensure the detachability of the guide rail and the anti-reverse rotation of the roller shaft. This design can reduce the number of required parts, improve installation efficiency, and thus greatly reduce the manufacturing cost of the lifter.

Claims

1. A roller center shaft fixing mechanism, characterized in that, The device includes a roller shaft, rollers, and a guide rail. A roller is installed between the roller shaft and the guide rail. A door panel is provided below the guide rail. The roller shaft passes through the guide rail and the door panel. The roller shaft includes a first mounting part and a second mounting part. The first mounting part has a cross-section with riveting features or is provided with threads. The first mounting part is installed with the guide rail by riveting features or threads. The second mounting part passes through the door panel and is fixed by a mounting nut.

2. The roller center shaft fixing mechanism according to claim 1, characterized in that, The guide rail includes a mounting plate, and the first mounting portion of the roller shaft is press-fitted onto the mounting plate.

3. The roller center shaft fixing mechanism according to claim 2, characterized in that, The bottom surface of the mounting plate contacts and fits against the door panel.

4. The roller center shaft fixing mechanism according to claim 1, characterized in that, The guide rail includes a nut, and the first mounting part of the roller shaft is screwed into the nut.

5. The roller center shaft fixing mechanism according to claim 4, characterized in that, The bottom surface of the nut contacts and engages with the door panel.

6. The roller center shaft fixing mechanism according to claim 1, characterized in that, A gap is left between the guide rail and the door panel.

7. The roller center shaft fixing mechanism according to claim 1, characterized in that, The second mounting part is provided with threads, which are fixed to the mounting nut.

8. The roller center shaft fixing mechanism according to claim 1, characterized in that, The first mounting part has a shaft part and a shaft cap part on its top.

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