A guide wheel assembly structure of a sliding door electric drive system and an automobile sliding door electric drive system

Abstract

A kind of guiding wheel assembly structure of electric drive system of sliding door, including left support, right support, guiding wheel, the inside of left support is provided with a guiding wheel installation groove, and the outside is equipped with left mounting hole, the inside of right support is provided with the clamping plate extending to left support, and the outside is equipped with right mounting hole, the guiding wheel is located in the guiding wheel installation groove of left support, the right support is connected with left support and is connected, by a pin shaft in sequence through left support, guiding wheel, right support, guiding wheel is supported between left and right support.

Description

Technical Field

[0001] This utility model relates to the field of electric drive systems for sliding doors, specifically to a guide wheel assembly structure for an electric drive system for sliding doors and an electric drive system for automotive sliding doors. Background Technology

[0002] With the development of automotive technology and the improvement of living standards, electric sliding doors for automobiles are widely used in large, medium and small MPVs due to their advantages such as convenient opening and high space utilization. As the core load-bearing and guiding component in the electric drive system of sliding doors, the structural design of the guide wheel directly affects the stability, reliability and assembly efficiency of the door operation.

[0003] Existing guide wheel assemblies and their mounting brackets are categorized into two types based on their assembly method: top-bottom split structure and left-right split structure. The left-right split structure, due to its simpler mold, allows for a larger sealing surface, ensuring better sealing performance between the guide wheel assembly and the vehicle body. However, the left-right split type involves each guide wheel mounting bracket having only half a mounting groove, meaning the groove depth of each bracket is only half the thickness of the guide wheel. Only when the left and right guide wheel mounting brackets are combined can a complete mounting groove be formed. Even after combination, at least two bolts are required for fixation. However, this mounting groove structure easily leads to misalignment of the left and right guide wheel mounting brackets, affecting bolt positioning and installation. Furthermore, misalignment can cause interference between the guide wheel or the steel cable wound around it, resulting in wear, abnormal noise, and other problems. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a guide wheel assembly structure for a sliding door electric drive system and an automotive sliding door electric drive system. The guide wheel is installed through the guide wheel mounting groove of the left bracket, and the left bracket and right bracket are snapped together and fixed by riveting with pins. This eliminates the need for bolts to fix the left and right brackets, avoiding the bracket misalignment problem caused by fixing bolts in the prior art.

[0005] The technical solution of this utility model is as follows: a guide wheel assembly structure for an electric drive system of a sliding door, including a left bracket, a right bracket, and a guide wheel. The left bracket has a guide wheel mounting groove on its inner side and a left mounting hole on its outer side. The right bracket has a snap-fit ​​plate extending to the left bracket on its inner side and a right mounting hole on its outer side. The guide wheel is located in the guide wheel mounting groove of the left bracket. The right bracket and the left bracket are snap-fitted together. A pin passes through the left bracket, the guide wheel, and the right bracket in sequence to support the guide wheel between the left and right brackets.

[0006] Preferably, the depth of the guide wheel mounting groove is greater than the thickness of the guide wheel.

[0007] Preferably, the snap-fit ​​plate includes a first snap-fit ​​plate and a second snap-fit ​​plate. The first snap-fit ​​plate is used to wrap the groove wall of the guide wheel mounting groove. The left bracket is provided with a snap-fit ​​groove, and the second snap-fit ​​plate snaps into the snap-fit ​​groove.

[0008] Preferably, a snap-fit ​​seat extends radially from one side of the first snap-fit ​​plate, and a snap-fit ​​hole is provided on the snap-fit ​​seat. An elastic clip extends radially from one side of the left bracket, and the elastic clip is snapped and fixed with the snap-fit ​​hole of the snap-fit ​​seat.

[0009] Preferably, a weight-reducing groove is provided on the inner side of the right support, a drainage hole is provided in the weight-reducing groove, and a drainage groove is provided between the weight-reducing groove and the cable inlet provided on the right support.

[0010] Preferably, a positioning boss is provided on the upper side of the cable inlet on the left bracket, and a positioning hole is provided on the right bracket at the position corresponding to the positioning boss, so that the positioning boss is inserted into the positioning hole to form a positioning.

[0011] Preferably, metal bushings are provided in both the left and right mounting holes.

[0012] Preferably, the pin passes through the left bracket, guide wheel, and right bracket in sequence and is fixed by riveting or punching the pin head, and a washer is provided between the right bracket and the pin head.

[0013] Preferably, it also includes a waterproof cover and a sealing foam. Mounting platforms are provided on both the left and right brackets. The waterproof cover is fitted onto the mounting platform, and the sealing foam is adhered to the waterproof cover to seal the guide wheel assembly structure.

[0014] This utility model also provides an electric drive system for a car sliding door using the above-mentioned guide wheel assembly structure, including a drive device, a front guide wheel, and the above-mentioned guide wheel assembly structure. The drive device includes a drive motor and a winding wheel driven by the drive motor. The winding wheel, the guide wheel assembly structure, and the front guide wheel are connected by a cable to form a loop.

[0015] The advantages of this utility model are: 1. This utility model fixes the left bracket, guide wheel, and right bracket together by setting a snap-fit ​​plate on the right bracket to snap into the left bracket during travel, and by using a pin shaft riveting method. No additional bolts are required, which saves costs, makes installation convenient, improves installation efficiency, reduces installation time, and avoids the problem of misalignment between the left and right brackets.

[0016] 2. The guide wheel mounting groove of the left bracket of this utility model can completely surround the guide wheel, avoiding the misalignment problem that occurs when fixing the left and right brackets in the prior art.

[0017] 3. The left and right brackets of this utility model are respectively provided with positioning bosses and positioning holes to ensure accurate fastening of the left and right brackets. Furthermore, the left bracket, guide wheel, and right bracket are formed by riveting the pin shaft, which ensures good concentricity between the pin shaft and the left and right brackets, prevents the guide wheel from deviating, and improves the assembly accuracy of the parts. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention; Figure 2 This is a partial exploded view of the present invention; Figure 3 This is a schematic diagram of the structure of the left and right brackets and guide wheels of this utility model, which are fixed by pins. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 for Figure 3 A front view structural diagram; Figure 6 for Figure 3 First upward view of the structure; Figure 7 for Figure 6 Enlarged view of point A; Figure 8 for Figure 3 The second upward-view structural diagram; Figure 9 Here are schematic diagrams of the left and right supports; Figure 10 for Figure 9 Enlarged view of point B; Figure 11 This is a schematic diagram of the right support structure; Figure 12 A schematic diagram showing the guide wheel installed in the guide wheel mounting slot of the left bracket; Figure 13 This is a schematic diagram of the electric drive system for a sliding door. Figure 14 This is a schematic diagram of the electric drive system for sliding doors installed on a car. Detailed Implementation

[0019] See Figures 1 to 12A guide wheel assembly structure for an electric drive system of a sliding door includes a left bracket 1, a right bracket 3, a guide wheel 2, a waterproof cover 7, and sealing foam 8. Both the left bracket 1 and the right bracket 3 are provided with mounting platforms 10. The waterproof cover 7 is fitted onto the mounting platform 10, and the sealing foam 8 is adhered to the waterproof cover 7 to seal the guide wheel assembly structure and prevent water from entering the bracket. The left bracket 1 has a guide wheel mounting groove 101 on its inner side and a left mounting hole 11 on its outer side. Metal bushings 5 ​​are provided in both the left mounting hole 11 and the right mounting hole 12. The metal bushings 5 ​​are used to withstand the compressive force during screw tightening, preventing the left and right brackets from deforming or breaking when installed inside the door. The right bracket 3 has a snap-fit ​​plate extending towards the left bracket 1 on its inner side and a right mounting hole 12 on its outer side. The snap-fit ​​plate includes a first snap-fit ​​plate 301 and a second snap-fit ​​plate 308. The first snap-fit ​​plate 301 is used to wrap around the groove wall of the guide wheel mounting groove 101, that is, the length of the first snap-fit ​​plate 301 is the same as the groove wall of the guide wheel mounting groove 101, so that the first snap-fit ​​plate 301 surrounds the groove of the guide wheel mounting groove 101, so that the two brackets mutually limit and support each other, improve the strength of the parts, and avoid the problem of misalignment of the left and right brackets, which would lead to wear and abnormal noise. A snap-fit ​​seat 302 extends radially from one side of the first snap-fit ​​plate 301. A snap-fit ​​hole 303 is provided on the snap-fit ​​seat 302. An elastic clip 102 extends radially from one side of the left bracket 1. The elastic clip 102 is snapped and fixed with the snap-fit ​​hole 303 of the snap-fit ​​seat 302. A snap-fit ​​groove 104 is provided on the left bracket 1, and the second snap-fit ​​plate 308 snaps into the snap-fit ​​groove 104. The left and right brackets are fixed together by a snap-fit ​​mechanism, eliminating the need for additional bolts, saving costs, and making installation easier, more efficient, and faster, while preventing misalignment of the left and right brackets. The guide wheel 2 is located in the guide wheel mounting groove 101 of the left bracket 1. The depth of the guide wheel mounting groove 101 is greater than the thickness of the guide wheel 2, meaning the guide wheel mounting groove 101 completely covers the guide wheel 2, preventing misalignment of the left and right brackets. The right bracket 3 is snap-fitted into the left bracket 1. A pin 4 passes sequentially through the left bracket 1, guide wheel 2, right bracket 3, and washer 6, and is fixed by riveting or punching the pin head, supporting the guide wheel 2 between the left and right brackets. The riveting and the snap-fitting mechanism of the right bracket 3 and left bracket 1 together form a limiting system to prevent the left and right brackets from separating before loading.

[0020] In this utility model, a weight-reducing groove 304 is provided on the inner side of the right support 3 to reduce the weight of the right support. A drainage hole 305 is provided in the weight-reducing groove 304. A drainage groove 306 is provided between the weight-reducing groove 304 and the cable inlet 9 provided on the right support 3. Through the structure of the drainage hole 305 and the drainage groove 306, when the waterproof cover 7 of the guide wheel assembly fails unexpectedly and water enters, the water can be discharged along the drainage hole 305 and the drainage groove 306, preventing water accumulation or water flow along the cable to the motor position and causing greater risks.

[0021] In this utility model, a positioning boss 103 is provided on the upper side of the cable inlet 9 provided on the left bracket 1, and a positioning hole 307 is provided on the right bracket 3 corresponding to the position of the positioning boss 103, so that the positioning boss 103 is inserted into the positioning hole 307 to form a positioning, thereby ensuring the concentricity of the pin shaft 4 with the left and right brackets and preventing the guide wheel from wobbling.

[0022] This utility model also provides an electric drive system for a car sliding door using the above-mentioned guide wheel assembly structure. The electric drive system for the sliding door includes a drive device 13, a front guide wheel 14, and the above-mentioned guide wheel assembly structure 15. The drive device 13 includes a drive motor and a winding wheel driven by the drive motor. The winding wheel, the guide wheel assembly structure 15, and the front guide wheel 14 are connected by a cable 16 to form a loop.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A guide wheel assembly structure of an electric drive system of a sliding door, comprising a left support (1), a right support (3), and a guide wheel (2), characterized in that: The left bracket (1) has a guide wheel mounting groove (101) on its inner side and a left mounting hole (11) on its outer side. The right bracket (3) has a snap-fit ​​plate extending to the left bracket (1) on its inner side and a right mounting hole (12) on its outer side. The guide wheel (2) is located in the guide wheel mounting groove (101) of the left bracket (1). The right bracket (3) is snapped and fastened to the left bracket (1) in opposite directions. A pin (4) passes through the left bracket (1), the guide wheel (2), and the right bracket (3) in sequence to support the guide wheel (2) between the left and right brackets.

2. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: The depth of the guide wheel mounting groove (101) is greater than the thickness of the guide wheel (2).

3. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: The snap-fit ​​plate includes a first snap-fit ​​plate (301) and a second snap-fit ​​plate (308). The first snap-fit ​​plate (301) is used to wrap the groove wall of the guide wheel mounting groove (101). The left bracket (1) is provided with a snap-fit ​​groove (104). The second snap-fit ​​plate (308) snaps into the snap-fit ​​groove (104).

4. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 3, characterized in that: A snap-fit ​​seat (302) extends radially from one side of the first snap-fit ​​plate (301), and a snap-fit ​​hole (303) is provided on the snap-fit ​​seat (302). An elastic clip (102) extends radially from one side of the left bracket (1), and the elastic clip (102) is snapped and fixed with the snap-fit ​​hole (303) of the snap-fit ​​seat (302).

5. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: A weight-reducing groove (304) is provided on the inner side of the right support (3), a drainage hole (305) is provided in the weight-reducing groove (304), and a drainage groove (306) is provided between the weight-reducing groove (304) and the cable inlet (9) provided on the right support (3).

6. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: A positioning boss (103) is provided on the upper side of the cable inlet (9) on the left bracket (1), and a positioning hole (307) is provided on the right bracket (3) corresponding to the position of the positioning boss (103), so that the positioning boss (103) is inserted into the positioning hole (307) to form a positioning.

7. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: Metal bushings (5) are provided in both the left mounting hole (11) and the right mounting hole (12).

8. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that: The pin (4) passes through the left bracket (1), guide wheel (2), and right bracket (3) in sequence. The pin head is fixed by riveting or punching. A washer (6) is provided between the right bracket (3) and the pin head.

9. A guide wheel assembly structure of an electric drive system of a sliding door according to claim 1, characterized in that It also includes a waterproof cover (7) and a sealing foam (8). Mounting platforms (10) are provided on both the left bracket (1) and the right bracket (3). The waterproof cover (7) is fitted on the mounting platform (10), and the sealing foam (8) is bonded to the waterproof cover (7) to seal the guide wheel assembly structure.

10. An electric drive system for a sliding door of a vehicle, characterized in that: It includes a drive device (13), a front guide wheel (14), and a guide wheel assembly structure as described in claim 1. The drive device (13) includes a drive motor and a winding wheel driven by the drive motor. The winding wheel, the guide wheel assembly structure, and the front guide wheel (14) are connected by a cable (16) to form a loop.

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