Synchronous belt tensioning adjusting mechanism of sliding door
By designing a timing belt tension adjustment mechanism for sliding doors, the problems of timing belt fixing and tension adjustment were solved, extending service life, reducing wear and noise, and ensuring the normal driving performance of sliding doors.
Patent Information
- Application Number
- CN202520151379.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The timing belts in existing electric sliding doors for automobiles have problems with fixing and tension adjustment, resulting in short service life, rapid wear, high noise, and instability of the sliding door.
A timing belt tension adjustment mechanism for sliding doors is designed. The timing belt is fixed to the side of the vehicle by first and second fixing block assemblies, and the tension of the timing belt is adjusted by a combination structure of adjusting shaft and clamp to ensure that the timing belt maintains appropriate tension during use.
It achieves stable fixing and tension adjustment of the synchronous belt, extends its service life, reduces wear and noise, and ensures the normal driving performance of the sliding door.
Smart Images
Figure CN223511434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive door accessories technology, and in particular to a sliding door synchronous belt tension adjustment mechanism. Background Technology
[0002] Currently, there are two main types of electric sliding doors for automobiles on the market: the wire guide rail system and the lower guide rail rack and pinion drive system. While the wire guide rail system is simple in structure and requires less modification to the original vehicle, the traditional wire guide rail system is a closed-loop structure. The drive motor is mounted on the rear side panel of the vehicle, and wires are led out from both ends of the winding reel and hung at the guide wheel of the middle guide rail. These two sections of wire are in close contact with the inner wall of the guide rail. When opening and closing the door, these two sections of wire slide against the inner wall of the guide rail, creating sliding friction. After a period of use, the wire rope is prone to breakage, failing to meet the OEM's requirement of a lifespan of over 35,000 cycles. The main disadvantages of the lower guide rail rack and pinion drive system are that the gear and rack are mechanically meshed, resulting in high transmission noise. It requires modification of the original vehicle guide rail, leading to significant changes to the original vehicle body. Furthermore, the usable space in the Y-axis direction of the guide rail is small, making it difficult for this technology to meet the national standard for the strength of sliding door retaining components within the same space. Therefore, people began to use timing belts as a rotation method to drive sliding doors. In this solution, both ends of the timing belt need to be fixedly installed on the side of the vehicle. If the timing belt is too tight during installation, it will wear out quickly. Also, after a period of use, the timing belt will stretch. If the timing belt is too loose, it will cause problems such as the sliding door not closing steadily or the timing belt getting stuck. Therefore, a timing belt tension adjustment mechanism for sliding doors is needed. This mechanism can fix the timing belt to the side of the vehicle and adjust the tension of the timing belt to ensure the normal use of the automatic sliding door drive mechanism. Utility Model Content
[0003] To address the aforementioned problems, this utility model proposes a sliding door synchronous belt tension adjustment mechanism, which can fix the synchronous belt to the side of the vehicle while also adjusting the tension of the synchronous belt to ensure the normal operation of the automatic sliding door drive mechanism.
[0004] This utility model is achieved through the following technical solution:
[0005] This utility model proposes a sliding door synchronous belt tension adjustment mechanism, including: a synchronous belt, a first fixing block assembly, and a second fixing block assembly. One end of the synchronous belt is connected to the first fixing block assembly, and the other end of the synchronous belt is connected to the second fixing block assembly. The first fixing block assembly and the second fixing block assembly are respectively installed on the side of the vehicle. The first fixing block assembly includes a first upper clamping piece, a first lower clamping piece, and a first adjusting shaft. The first upper clamping piece and the first lower clamping piece are connected to each other by locking bolts. The first adjusting shaft passes through the first upper clamping piece and the first lower clamping piece, and a first clamping part is provided in the middle of the first adjusting shaft. The first upper clamping piece and the first lower clamping piece are pressed tightly against the upper and lower end faces of the first clamping part.
[0006] Furthermore, the second fixing block assembly includes a second upper clamping piece, a second lower clamping piece, a second adjusting shaft, and a fixing shaft. The second upper clamping piece and the second lower clamping piece are connected to each other by locking bolts. The second adjusting shaft passes through the second upper clamping piece and the second lower clamping piece, and a second clamping part is provided in the middle of the second adjusting shaft. The second upper clamping piece and the second lower clamping piece are pressed tightly against the upper and lower end faces of the second clamping part. The fixing shaft passes through the second upper clamping piece, and the fixing shaft is fixedly connected to the second upper clamping piece by bolts.
[0007] Furthermore, one end of the synchronous belt is connected to the first adjusting shaft by a bolt, and the other end of the synchronous belt is wrapped between the second adjusting shaft and the fixed shaft, and the other end of the synchronous belt is connected to the second adjusting shaft by a bolt.
[0008] Furthermore, the upper part of the first and second adjusting shafts is provided with regular hexagonal blind holes.
[0009] Furthermore, the first upper clamping piece, the first lower clamping piece, the second upper clamping piece, and the second lower clamping piece are all provided with grooves, and the first clamping part and the second clamping part are installed in the grooves.
[0010] Furthermore, a gap of 0.5mm to 2mm is left between the first upper clamping piece and the first lower clamping piece, as well as between the second upper clamping piece and the second lower clamping piece.
[0011] The beneficial effects of this utility model are as follows: by fixing the synchronous belt on the first adjusting shaft and the second adjusting shaft, the synchronous belt can be tightened or loosened by rotating the first adjusting shaft and the second adjusting shaft. The first adjusting shaft and the second adjusting shaft are clamped by clamping plates, so that while fixing the end of the synchronous belt, the tension of the synchronous belt can be adjusted to ensure the normal use of the automatic sliding door drive structure. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the first fixing block assembly of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the second fixing block assembly of this utility model;
[0015] Figure 4 This is an exploded view of the first fixing block assembly of this utility model;
[0016] Figure 5 This is an exploded view of the second fixing block assembly of this utility model;
[0017] Figure 6 This is a schematic diagram of the structure of the first lower clamping piece of this utility model;
[0018] Figure 7 This is a schematic diagram of the structure of the second lower clamping piece of this utility model;
[0019] In the figure: 1-synchronous belt, 2-first fixing block assembly, 3-second fixing block assembly, 4-blind hole, 5-groove, 21-first upper clamping piece, 22-first lower clamping piece, 23-first adjusting shaft, 24-first clamping part, 31-second upper clamping piece, 32-second lower clamping piece, 33-second adjusting shaft, 34-fixed shaft, 35-second clamping part. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0023] like Figures 1 to 7 As shown, an embodiment of this utility model provides a sliding door synchronous belt tensioning adjustment mechanism, including: a synchronous belt 1, a first fixing block assembly 2, and a second fixing block assembly 3. One end of the synchronous belt 1 is connected to the first fixing block assembly 2, and the other end of the synchronous belt 1 is connected to the second fixing block assembly 3. The first fixing block assembly 2 and the second fixing block assembly 3 are respectively installed on the side of the vehicle. The first fixing block assembly 2 includes a first upper clamping piece 21, a first lower clamping piece 22, and a first adjusting shaft 23. The first upper clamping piece 21 and the first lower clamping piece 22 are connected to each other by locking bolts. The first adjusting shaft 23 passes through the first upper clamping piece 21 and the first lower clamping piece 22, and a first clamping part 24 is provided in the middle of the first adjusting shaft 23. The first upper clamping piece 21 and the first lower clamping piece 22 are pressed tightly against the upper and lower end faces of the first clamping part 24.
[0024] The first fixing block assembly 2 and the second fixing block assembly 3 are fixed to the side of the vehicle by bolts or clips. The timing belt 1 is connected to the first fixing block assembly 2 and the second fixing block assembly 3 respectively. After the timing belt is connected to the sliding door drive mechanism, the timing belt 1 is pulled by the drive mechanism motor, and the sliding door is opened and closed by the reaction force. When it is necessary to adjust the tension of the timing belt 1, the locking bolt can be loosened so that the first adjusting shaft 23 or the second adjusting shaft 33 can be rotated. By rotating the first adjusting shaft 23 or the second adjusting shaft 33, the end of the timing belt 1 can be wound or loosened to adjust the tension of the timing belt 1. After adjustment, the locking bolt is tightened so that the first upper clamp 21 and the first lower clamp 22 clamp the first clamping part 24, and at the same time the second upper clamp 31 and the second lower clamp 32 clamp the second clamping part 35, thereby fixing the first adjusting shaft 23 and the second adjusting shaft 33 and preventing the first adjusting shaft 23 and the second adjusting shaft 33 from rotating when the sliding door is working, so as to ensure the normal use of the automatic sliding door drive structure.
[0025] In a preferred embodiment, such as Figure 3 , Figure 5As shown, the second fixing block assembly 3 includes a second upper clamping piece 31, a second lower clamping piece 32, a second adjusting shaft 33, and a fixing shaft 34. The second upper clamping piece 31 and the second lower clamping piece 32 are connected to each other by locking bolts. The second adjusting shaft 33 passes through the second upper clamping piece 31 and the second lower clamping piece 32, and a second clamping part 35 is provided in the middle of the second adjusting shaft 33. The second upper clamping piece 31 and the second lower clamping piece 32 are pressed tightly against the upper and lower end faces of the second clamping part 35. The fixing shaft 34 passes through the second upper clamping piece 31, and the fixing shaft 34 is fixedly connected to the second upper clamping piece 31 by bolts. The second upper clamping piece 31 and the second lower clamping piece 32 clamp the upper and lower end faces of the second clamping part 35 by the tension provided by the locking bolts, thereby preventing the second adjusting shaft 33 from rotating by friction. Thus, the tension of the synchronous belt 1 can be easily adjusted by the second adjusting shaft 33, and the tension of the synchronous belt 1 is maintained after adjustment, preventing the second adjusting shaft 33 from loosening during the use of the sliding door.
[0026] Specifically, one end of the synchronous belt 1 is connected to the first adjusting shaft 23 by bolts, and the other end of the synchronous belt 1 is wrapped between the second adjusting shaft 33 and the fixed shaft 34, and the other end of the synchronous belt 1 is connected to the second adjusting shaft 33 by bolts. The first fixing block assembly 2 is set in the opening direction of the vehicle sliding door, and the second fixing block assembly 3 is set in the closing direction of the vehicle sliding door. That is, when the vehicle sliding door is open, the first fixing block assembly 2 provides tension to the synchronous belt 1, and when the vehicle sliding door is closed, the second fixing block assembly 3 provides tension to the synchronous belt 1. Since the vehicle sliding door needs to overcome the resistance of the track sealing strip when closing, the required tension is greater. Therefore, the other end of the synchronous belt 1 is wrapped around the second adjusting shaft 33 and the fixed shaft 34 before being connected to the second adjusting shaft 33. By increasing the friction between them, it is ensured that the synchronous belt 1 will not break when overcoming the reaction force of the sealing strip when closing, and the service life of the synchronous belt 1 is improved.
[0027] In a preferred embodiment, such as Figure 2 , Figure 3 As shown, the first adjusting shaft 23 and the second adjusting shaft 33 are provided with regular hexagonal blind holes 4 on their upper parts. After inserting a hexagonal wrench into the blind holes 4, the first adjusting shaft 23 and the second adjusting shaft 33 can be rotated conveniently, thereby conveniently adjusting the tension of the timing belt 1 so that the drive mechanism can smoothly slide the door through the timing belt 1.
[0028] Specifically, such as Figure 6 , Figure 7As shown, the first upper clamping piece 21, the first lower clamping piece 22, the second upper clamping piece 31, and the second lower clamping piece 32 are all provided with grooves 5. The first clamping part 24 and the second clamping part 35 are installed in the grooves 5. The grooves 5 can play a guiding role, which facilitates the connection between the first upper clamping piece 21 and the first lower clamping piece 22, as well as the second upper clamping piece 31 and the second lower clamping piece 32. When the first adjusting shaft 23 and the second adjusting shaft 33 rotate, they can be kept in the grooves 5 to prevent misalignment between the clamping pieces.
[0029] Specifically, a gap of 0.5mm to 2mm is left between the first upper clamping piece 21 and the first lower clamping piece 22, and between the second upper clamping piece 31 and the second lower clamping piece 32. After the first upper clamping piece 21 and the first lower clamping piece 22, or the second upper clamping piece 31 and the second lower clamping piece 32, are tightened by bolts, the tension provided by the bolts can bring the clamping pieces closer to each other, thereby converting all the tension into pressure on the clamping part, and thus fixing the first adjusting shaft 23 and the second adjusting shaft 33 by friction.
[0030] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.
Claims
1. A sliding door synchronous belt tension adjustment mechanism, characterized in that, include: A timing belt (1), a first fixing block assembly (2), and a second fixing block assembly (3) are provided. One end of the timing belt (1) is connected to the first fixing block assembly (2), and the other end of the timing belt (1) is connected to the second fixing block assembly (3). The first fixing block assembly (2) and the second fixing block assembly (3) are respectively installed on the side of the vehicle. The first fixing block assembly (2) includes a first upper clamping piece (21), a first lower clamping piece (22), and a first adjusting shaft (23). The first upper clamping piece (21) and the first lower clamping piece (22) are connected to each other by locking bolts. The first adjusting shaft (23) passes through the first upper clamping piece (21) and the first lower clamping piece (22), and a first clamping part (24) is provided in the middle of the first adjusting shaft (23). The first upper clamping piece (21) and the first lower clamping piece (22) are pressed tightly against the upper and lower end faces of the first clamping part (24).
2. The sliding door synchronous belt tensioning adjustment mechanism according to claim 1, characterized in that, The second fixing block assembly (3) includes a second upper clamping piece (31), a second lower clamping piece (32), a second adjusting shaft (33), and a fixing shaft (34). The second upper clamping piece (31) and the second lower clamping piece (32) are connected to each other by locking bolts. The second adjusting shaft (33) passes through the second upper clamping piece (31) and the second lower clamping piece (32), and a second clamping part (35) is provided in the middle of the second adjusting shaft (33). The second upper clamping piece (31) and the second lower clamping piece (32) are pressed tightly against the upper and lower end faces of the second clamping part (35). The fixing shaft (34) passes through the second upper clamping piece (31), and the fixing shaft (34) is fixedly connected to the second upper clamping piece (31) by bolts.
3. The sliding door synchronous belt tensioning adjustment mechanism according to claim 2, characterized in that, One end of the synchronous belt (1) is connected to the first adjusting shaft (23) by bolts, and the other end of the synchronous belt (1) is wrapped between the second adjusting shaft (33) and the fixed shaft (34), and the other end of the synchronous belt (1) is connected to the second adjusting shaft (33) by bolts.
4. The sliding door synchronous belt tensioning adjustment mechanism according to claim 2, characterized in that, The first adjusting shaft (23) and the second adjusting shaft (33) are provided with regular hexagonal blind holes (4) on their upper parts.
5. The sliding door synchronous belt tensioning adjustment mechanism according to claim 2, characterized in that, The first upper clamping piece (21), the first lower clamping piece (22), the second upper clamping piece (31), and the second lower clamping piece (32) are all provided with grooves (5), and the first clamping part (24) and the second clamping part (35) are installed in the grooves (5).
6. The sliding door synchronous belt tensioning adjustment mechanism according to claim 2, characterized in that, A gap of 0.5 mm to 2 mm is left between the first upper clip (21) and the first lower clip (22) and between the second upper clip (31) and the second lower clip (32).