Automobile seat electric long slide rail structure convenient to install
By adopting a three-dimensional layout and a roller bearing design, the installation of the wire harness connector is simplified and the lateral limiting fixation of the gearbox is eliminated, solving the problems of low efficiency and increased cost in the existing technology and realizing a highly efficient assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 重庆飞驰汽车系统有限公司
- Filing Date
- 2025-08-25
- Publication Date
- 2026-08-04
AI Technical Summary
The existing electric sliding rail structure for car seats is inefficient and costly during assembly. The wiring harness connectors are cumbersome to install, and the side mounting of the gearbox requires additional limiting and fixing brackets and fasteners, which affects assembly efficiency and increases material costs.
It adopts a three-dimensional layout, with the motor and gearbox connected by transmission. The roller support is rotatably connected by stepped bolts. The wire harness connector is hidden when the roller support is folded down and installed. The roller support is locked and fixed, eliminating the need for lateral limit fixing brackets and fasteners.
The installation process of the wire harness connector has been simplified, the number of parts has been reduced, production costs and time consumption have been lowered, and assembly efficiency has been improved.
Smart Images

Figure CN224588968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, and in particular to an electric long slide rail structure for easy installation of automotive seats. Background Technology
[0002] With the rapid development of the automotive industry, consumers are increasingly demanding higher levels of comfort and functionality from car seats. As a key component for adjusting the fore-and-aft movement of car seats, the performance and ease of assembly of the electric long slide rail directly impact the overall quality and production efficiency of the car seat. Currently, traditional electric long slide rail structures for car seats exhibit numerous problems in practical applications, primarily in the installation of wiring harness connectors and gearboxes. In existing electric long slide rail structures, the installation of wiring harness connectors is a rather cumbersome process. Typically, the upper slide rail end has a roller bracket; when installing the wiring harness connector, this roller bracket must be removed first to expose the connector's installation location and complete the installation. This method increases the complexity of the operation and time consumption, affecting assembly efficiency. In existing technologies, gearboxes are often installed laterally, meaning they are mounted to the designated position from the side of the slide rail. To ensure the stability and reliability of the gearbox during operation and prevent horizontal displacement, lateral limiting and fixing brackets and fasteners are required. This side-mounting method increases material and processing costs, consumes labor time, and affects assembly efficiency. Utility Model Content
[0003] In view of the problems existing in the prior art, the present invention aims to provide an easy-to-install electric long slide rail structure for automobile seats, so as to solve the problems of low efficiency and increased cost in the assembly process of existing electric long slide rail structures for automobile seats.
[0004] To achieve the above objectives, this utility model proposes an easy-to-install electric long slide rail structure for car seats, including an upper slide rail, a lower slide rail, an upper slide rail housing, a lead screw, a motor, and a gearbox. The upper slide rail has a lead screw through-hole, and its top surface has a gearbox fixing groove. The gearbox is placed and fixed within the gearbox fixing groove. The lead screw horizontally passes through the lead screw through-hole and is threadedly connected to the gearbox. Both ends of the lead screw are fixed to the lower slide rail. The motor is fixed to the upper slide rail via a motor bracket and is located above the gearbox. The motor's output end is connected to the gearbox for transmission. During operation, it can drive the gearbox to rotate, thereby driving the gearbox to move along the lead screw. The upper slide rail housing is covered outside the upper slide rail and is fixedly connected to the upper slide rail. The front and rear ends of the upper slide rail housing are provided with mounting parts for installing wire harness connectors. Each mounting part is rotatably connected to a roller bracket. The roller bracket covers and hides the mounting part. When the roller bracket is flipped up, the mounting part can be exposed. At this time, the wire harness connector can be installed on the mounting part. After the wire harness connector is installed, the roller bracket can be flipped down to fit against the upper slide rail housing and locked and fixed to the upper slide rail housing.
[0005] In the above solution: the motor bracket is fixed to the upper slide rail above the gearbox with bolts, and the motor is fixed to the top surface of the motor bracket with PT screws. The motor bracket has a through hole through which the output end of the power supply passes. This three-dimensional layout makes full use of the space above the seat slide rail, making the entire electric long slide rail structure more compact.
[0006] In the above solution: the rolling roller bracket has a groove-shaped structure, which is rotatably connected to the upper slide rail housing by stepped bolts on both sides. The stepped bolt connection method can ensure a stable rotatable connection between the rolling roller bracket and the upper slide rail housing, and is easy to install.
[0007] In the above solution, the wire harness connector can be installed on the mounting part via a snap ring, which is simple in structure and easy to install.
[0008] In the above solution: when the roller support is folded down to fit against the upper slide rail housing, the roller support can be locked and fixed to the upper slide rail housing by fastening screws, ensuring that the roller support is always in the correct position and will not loosen or shift due to vibration.
[0009] In the above scheme: the roller bracket is used to install the roller, and the roller is used to limit and fix the dustproof rubber strip. The dustproof rubber strip covers the gap at the top of the lower slide rail. Two tensioning rollers are also provided in the middle of the upper slide rail housing. When the upper slide rail moves back and forth, the dustproof rubber strip that falls into the upper slide rail housing partially detaches from the lower slide rail, and the two ends of the detached section are pressed by the pressure rollers, while the middle of the detached section is tensioned by the tensioning rollers installed in the upper slide rail housing.
[0010] The beneficial effects of this utility model are: 1. When installing the wire harness connector, there is no need to remove the rolling roller bracket, and the two will not interfere with each other. This greatly simplifies the installation process of the wire harness connector, significantly reduces the time and manpower required for assembly, thereby effectively improving assembly efficiency and reducing production costs. 2. The gearbox installation eliminates the need for lateral limiting and fixing brackets and additional fasteners, reducing the number of parts used and thus lowering the manufacturing cost of the slide rail. At the same time, it simplifies the installation steps, reduces the installation time required, and further improves assembly efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the assembly of the gearbox and the lead screw.
[0013] Figure 3 This is a schematic diagram of the upper slide rail.
[0014] Figure 4 This is a schematic diagram of the installation of the motor and wiring harness connector on the upper slide rail.
[0015] Figure 5 This is a schematic diagram of the dustproof rubber strip installation. Detailed Implementation
[0016] like Figure 1 As shown in Figure 5, an easy-to-install electric long slide rail structure for car seats mainly consists of an upper slide rail 13, a lower slide rail 1, an upper slide rail housing 6, a lead screw 15, a motor 11, and a gearbox 9.
[0017] The upper slide rail 13 has a lead screw through hole 16, and a gearbox fixing groove 14 is provided on the top surface of the upper slide rail 13. The gearbox 9 is placed and fixed in the gearbox fixing groove 14. The lead screw 15 passes horizontally through the lead screw through hole 16 and is threadedly connected to the gearbox 9. Both ends of the lead screw 15 are fixed to the lower slide rail 1. The motor 11 is fixed to the upper slide rail 13 through the motor bracket 10 and is located above the gearbox 9. The output end of the motor 11 is connected to the gearbox 9 for transmission. When the motor 11 is working, it can drive the gearbox 9 to rotate, thereby driving the gearbox 9 to move along the lead screw 15.
[0018] The upper slide rail housing 6 covers the upper slide rail 13 and is fixedly connected to the upper slide rail 13. The front and rear ends of the upper slide rail housing 6 are provided with mounting portions for installing wire harness connectors 7. Each mounting portion is rotatably connected to a roller bracket 3, which covers and hides the mounting portion. When the roller bracket 3 is lifted upwards, the mounting portion is exposed, and the wire harness connector 7 can be installed on the mounting portion. After the wire harness connector 7 is installed, the roller bracket 3 can be lowered to fit against the upper slide rail housing 6 and locked in place.
[0019] Ideally, the motor bracket 10 is fixed to the upper slide rail 13 above the gearbox 9 by bolts 12, and the motor 11 is fixed to the top surface of the motor bracket 10 by PT screws 17. The motor bracket 10 is provided with a through hole through which the output end of the motor 11 passes. This three-dimensional layout makes full use of the space above the slide rail, making the entire electric long slide rail structure more compact.
[0020] Ideally, the roller support 3 should have a groove-shaped structure, which is rotatably connected to the upper slide rail housing 6 by step bolts 5 arranged on both sides. The step bolt 5 connection method can ensure a stable rotatable connection between the roller support 3 and the upper slide rail housing 6, and is easy to install.
[0021] Ideally, the wire harness connector 7 can be mounted on the mounting part via the snap ring 8, which is simple in structure and easy to install.
[0022] Ideally, when the roller support 3 is folded down to fit against the upper slide rail housing 6, the roller support 3 can be locked and fixed to the upper slide rail housing 6 by the fastening screws 4, ensuring that the roller support 3 is always in the correct position and will not loosen or shift due to vibration.
[0023] Ideally, the roller bracket 3 is used to install the roller 18, and the roller 18 is used to limit and fix the dustproof rubber strip 2. This structure is existing technology. Specifically, the dustproof rubber strip 2 covers the gap at the top of the lower slide rail 1, and two tensioning rollers 19 are also provided in the middle of the upper slide rail housing 6. When the upper slide rail 13 moves back and forth, the dustproof rubber strip 2 that falls into the upper slide rail housing 6 partially detaches from the lower slide rail 1, and the two ends of the detached section are pressed by the pressure rollers 18, while the middle of the detached section is tensioned by the tensioning rollers 19 installed in the upper slide rail housing 6.
Claims
1. An easy-to-install electric long slide rail structure for car seats, comprising an upper slide rail (13), a lower slide rail (1), an upper slide rail housing (6), a lead screw (15), a motor (11), and a gearbox (9), wherein the upper slide rail (13) is provided with a lead screw through hole (16), characterized in that: The upper slide rail (13) has a gearbox fixing groove (14) on its top surface. The gearbox (9) is placed and fixed in the gearbox fixing groove (14). The lead screw (15) passes horizontally through the lead screw through hole (16) and is threadedly connected to the gearbox (9). The two ends of the lead screw (15) are fixed on the lower slide rail (1). The motor (11) is fixed on the upper slide rail (13) through the motor bracket (10) and is located above the gearbox (9). The output end of the motor (11) is connected to the gearbox (9) for transmission. When the motor (11) is working, it can drive the gearbox (9) to rotate, thereby driving the gearbox (9) to move along the lead screw (15). The upper slide rail housing (6) is covered outside the upper slide rail (13) and is fixedly connected to the upper slide rail (13). The front and rear ends of the upper slide rail housing (6) are provided with mounting parts for installing wire harness connectors (7). Each mounting part is rotatably connected to a roller bracket (3). The roller bracket (3) covers and hides the mounting part. When the roller bracket (3) is flipped up, the mounting part can be exposed. At this time, the wire harness connector (7) can be installed on the mounting part. After the wire harness connector (7) is installed, the roller bracket (3) can be flipped down to fit against the upper slide rail housing (6) and locked and fixed on the upper slide rail housing (6).
2. The easy-to-install electric long slide rail structure for automobile seats according to claim 1, characterized in that: The motor bracket (10) is fixed to the upper slide rail (13) above the gearbox (9) by bolts (12), and the motor (11) is fixed to the top surface of the motor bracket (10) by PT screws (17). The motor bracket (10) is provided with a through hole through which the output end of the power supply (11) passes.
3. The easy-to-install electric long slide rail structure for automobile seats according to claim 1, characterized in that: The roller support (3) is a groove-shaped structure, which is rotatably connected to the upper slide rail housing (6) by step bolts (5) arranged on both sides.
4. The easy-to-install electric long slide rail structure for automobile seats according to claim 1, characterized in that: The wire harness connector (7) can be mounted on the mounting part via a snap ring (8).
5. The easy-to-install electric long slide rail structure for automobile seats according to claim 1, characterized in that: When the roller support (3) is flipped down to fit against the upper slide rail housing (6), the roller support (3) can be locked and fixed to the upper slide rail housing (6) by fastening screws (4).
6. The easy-to-install electric long slide rail structure for automobile seats according to claim 1, characterized in that: The roller bracket (3) is used to install the roller (18), and the roller (18) is used to limit and fix the dustproof rubber strip (2).