Electric high-strength sliding rail horizontal driver for automobile seat

Abstract

The utility model relates to an electric high-strength slide rail horizontal driver for an automobile seat, which comprises a thickened screw rod and a reduction gearbox, a turbine and a worm in transmission fit with the turbine are arranged in the reduction gearbox, and a threaded hole for the thickened screw rod to penetrate through and in threaded connection with the thickened screw rod is arranged in the turbine. Screw rod holes coaxial with the threaded holes are formed in the two sides of the reduction gearbox, the reduction gearbox comprises a left box body and a right box body, after the left box body and the right box body are buckled, an installation space used for installing a worm gear and a worm is formed in the left box body and the right box body, a transmission hole is formed in one end of the worm, and the transmission hole is communicated with the transmission hole. A reinforcing block is arranged at the position, opposite to the buckling face and corresponding to the transmission hole, of the left box body, a mounting hole communicated with the mounting space is formed in the reinforcing block, and an opening of the mounting hole is flared. The technical scheme provided by the utility model has the technical effects of simple structure, high overall strength and convenience in installation.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive seat actuators, and in particular to an electric high-strength sliding rail horizontal actuator for automotive seats. Background Technology

[0002] A car seat actuator is a common mechanism in automobiles used to adjust the seat position. It is located between the seat and the floor of the vehicle, establishing a transmission connection between the seat and a guide rail on the floor. When the motor operates, it drives the seat to move along the guide rail, thereby adjusting the seat position. Existing horizontal actuators for rear car seats have a complex structure, leading to inefficient assembly and poor load-bearing capacity, making them prone to deformation and damage over prolonged use. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a high-strength electric sliding rail horizontal actuator for automotive seats that features a simple structure, high overall strength, and easy installation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a horizontal actuator for a high-strength electric sliding rail of an automotive seat, comprising a thickened lead screw and a reduction gearbox. The reduction gearbox contains a turbine and a worm gear that drives the turbine. The turbine has a threaded hole through which the thickened lead screw passes and is threadedly connected to it. The reduction gearbox has lead screw holes on both sides, coaxially aligned with the threaded holes. The reduction gearbox includes a left housing and a right housing. When the left and right housings are interlocked, they form an internal mounting space for installing the turbine and worm gear. One end of the worm gear has a transmission hole. The left housing has a reinforcing block facing away from the interlocking surface and corresponding to the position of the transmission hole. The reinforcing block has a mounting hole communicating with the mounting space, and the opening of the mounting hole is flared.

[0005] By adopting the above technical solution, the worm gear is connected to the motor for transmission and meshes with the worm wheel. The thickened lead screw passes through the threaded hole of the worm wheel and is screwed in, thus achieving a fit with the gearbox. This results in strong load-bearing capacity, a more reliable and stable overall structure, and improved service life. The reinforcing block increases the contact area with the worm gear, thereby improving the stability of the worm gear's fit with the motor. Since the transmission hole of the worm gear is only located at one end of the worm gear, and the opening of the mounting hole is flared, it facilitates subsequent assembly with the motor, allowing for positioning of the worm gear's installation direction and differentiation of the gearbox's orientation during assembly. This facilitates quick installation and further improves installation efficiency.

[0006] The present invention further includes the following features: the left and right housings are fixedly connected by multiple bolts; the left housing has a countersunk hole on the side facing away from the fastening surface for accommodating bolt nuts; and the right housing has a screw hole corresponding to the countersunk hole position that is adapted to the bolt.

[0007] By adopting the above technical solution, after the left and right housings are interlocked and fixed with bolts, the structure is stable. The countersunk holes are designed to accommodate the nuts of the bolts after installation, further reducing the volume of the gearbox after assembly. Preferably, four bolts are provided, respectively located at the four corners of the gearbox, to further improve structural stability. The countersunk holes are located on the same side as the reinforcing blocks, making it easier for operators to distinguish the orientation of the gearbox during assembly, further improving assembly efficiency while facilitating disassembly and maintenance.

[0008] The present invention further includes the following: the outer wall of the left and right housings facing away from the fastening surface has symmetrically arranged weight-reducing recesses on both sides facing the lead screw hole.

[0009] By adopting the above technical solution, the weight-reducing recess can reduce the overall weight of the gearbox without affecting the structural strength, thereby saving materials and reducing costs.

[0010] The present invention further includes: an outwardly protruding arc-shaped block is provided in the weight-reducing recess corresponding to the position of the lead screw hole.

[0011] By adopting the above technical solution, the arc-shaped block increases the structural strength of the corresponding lead screw hole position, plays a certain buffering role, avoids deformation when in contact with other parts, and improves service life.

[0012] The present invention further includes a grease inlet on the top of the gearbox corresponding to the worm gear position.

[0013] By adopting the above technical solution, grease can be added to the worm gear through the grease inlet when needed to lubricate the turbine, making the transmission of the turbine and worm gear smoother and improving its service life.

[0014] The present invention is further provided in that: bushings are provided on both sides of the turbine, and circumferential positioning blocks are provided on the bushings, the circumferential positioning blocks being sandwiched between the fastening surfaces of the left and right housings.

[0015] By adopting the above technical solution, the bushing can reduce the friction of the turbine during transmission and improve the smoothness of transmission. The circumferential positioning block is used to fix the bushing circumferentially to prevent the bushing from rotating, thereby improving the stability and reliability of the turbine transmission. At the same time, it can also reduce the noise generated when the bushing rotates relative to the gearbox.

[0016] The present invention further includes: a positioning component is provided on the fastening surface of the left box and the right box. The positioning component includes a positioning post and a positioning hole adapted to the positioning post. There are four positioning posts, each of which is located at the four corners of the left box. The positioning hole is located on the right box and corresponds to the position of the positioning post.

[0017] By adopting the above technical solution, the positioning component allows the left and right boxes to be positioned when they are snapped together, through the cooperation of the positioning posts and positioning holes, which facilitates subsequent fixed installation and further improves the convenience of the installation structure. The positioning posts are distributed at the four corners of the left box, making the structure more stable. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Enlarged view of the A-section structure;

[0020] Figure 3 This is an exploded view of the structure of an embodiment of the present utility model;

[0021] The labels in the diagram mean: 1-thickened lead screw, 2-gearbox, 201-left gearbox, 202-right gearbox, 3-worm gear, 4-worm, 5-positioning assembly, 501-positioning post, 6-lead screw hole, 7-installation space, 8-transmission hole, 9-reinforcing block, 10-mounting hole, 11-bolt, 12-countersunk hole, 13-screw hole, 14-weight reduction recess, 15-arc block, 16-addition port, 17-shaft sleeve, 18-circumferential positioning block. Detailed Implementation

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0023] See appendix Figure 1-3This utility model discloses a horizontal actuator for a high-strength electric sliding rail of an automotive seat, comprising a thickened lead screw 1 and a reduction gearbox 2. The reduction gearbox 2 contains a turbine 3 and a worm gear 4 that drives the turbine 3. The turbine 3 has a threaded hole through which the thickened lead screw 1 passes and is threadedly connected to the thickened lead screw 1. The reduction gearbox 2 has lead screw holes 6 on both sides, which are coaxially arranged with the threaded holes. The reduction gearbox 2 includes a left housing 201 and a right housing 202. When the left housing 201 and the right housing 202 are fastened together, an installation space 7 is formed inside for installing the turbine 3 and the worm gear 4. One end of the worm gear 4 is provided with a transmission hole 8. The left housing 201 is provided with a reinforcing block 9 facing away from the fastening surface and corresponding to the position of the transmission hole 8. The reinforcing block 9 has an installation hole 10 that communicates with the installation space 7. The opening of the installation hole 10 is flared. The worm gear 4 is connected to the motor for transmission and meshes with the worm gear 3. The thickened lead screw 1 passes through the threaded hole of the worm gear 3 and is screwed in to achieve cooperation with the gearbox 2. It has a strong load-bearing capacity, and the overall structure is more reliable and stable, thus improving its service life. The setting of the reinforcing block 9 increases the contact area with the worm gear 4, thereby improving the stability of the cooperation between the worm gear 4 and the motor. Since the transmission hole 8 of the worm gear 4 is only set at one end of the worm gear 4, the opening of the mounting hole 10 is flared, which facilitates the subsequent assembly with the motor, and also allows for positioning the installation direction of the worm gear 4 and distinguishing the orientation of the gearbox 2 during assembly, which facilitates quick installation and further improves installation efficiency.

[0024] This embodiment further includes the following configuration: the left housing 201 and the right housing 202 are fixedly connected by multiple bolts 11. The left housing 201 has a countersunk hole 12 on the side facing away from the fastening surface to accommodate the bolt 11 nuts. The right housing 202 has a screw hole 13 corresponding to the countersunk hole 12, which is adapted to the bolt 11. When the left housing 201 and the right housing 202 are fastened together and fixedly installed by the bolts 11, the structure is stable. The countersunk hole 12 is used to accommodate the bolt 11 nuts after installation, further reducing the volume of the gearbox 2 after assembly. Preferably, four bolts 11 are provided, respectively located at the four corners of the gearbox 2, further improving structural stability. The countersunk hole 12 is located on the same side as the reinforcing block 9, making it easier for the operator to distinguish the orientation of the gearbox 2 during assembly, further improving assembly efficiency while facilitating disassembly and maintenance.

[0025] This embodiment further includes the following: the outer walls of the left housing 201 and the right housing 202 facing away from the fastening surface have symmetrically arranged weight-reducing recesses 14 on both sides facing the lead screw hole 6. The weight-reducing recesses 14 reduce the overall weight of the gearbox 2 without affecting the structural strength, thus saving materials and reducing costs.

[0026] This embodiment further includes an outwardly protruding arc-shaped block 15 at the position corresponding to the lead screw hole 6 in the weight-reducing recess 14. The arc-shaped block 15 increases the structural strength at the position corresponding to the lead screw hole 6, provides a certain buffering effect, avoids deformation when in contact with other components, and improves service life.

[0027] This embodiment further includes a grease inlet 16 on the top of the gearbox 2, corresponding to the worm gear 4. Grease can be added to the worm gear 4 through the inlet 16 when needed to lubricate the turbine 3, resulting in smoother transmission between the turbine 3 and the worm gear 4 and extending their service life.

[0028] This embodiment further includes the following configuration: bushings 17 are fitted on both sides of the turbine 3, and circumferential positioning blocks 18 are provided on the bushings 17. The circumferential positioning blocks 18 are clamped between the mating surfaces of the left housing 201 and the right housing 202. The bushings 17 reduce the friction of the turbine 3 during transmission, improving the smoothness of transmission. The circumferential positioning blocks 18 are used to circumferentially fix the bushings 17, preventing them from rotating and improving the stability and reliability of the turbine 3 during transmission. Simultaneously, they can also reduce the noise generated when the bushings 17 rotate relative to the reduction gearbox 2.

[0029] This embodiment further includes a positioning component 5 on the mating surfaces of the left housing 201 and the right housing 202. The positioning component 5 includes positioning posts 501 and positioning holes adapted to the positioning posts 501. Four positioning posts 501 are provided, each positioned at one of the four corners of the left housing 201. The positioning holes are located on the right housing 202 and correspond to the positions of the positioning posts 501. The positioning component 5, when the left housing 201 and the right housing 202 are mated, positions the left housing 201 and the right housing 202 by cooperating with the positioning posts 501 and the positioning holes, facilitating subsequent fixing and installation, and further improving the ease of installation. The distribution of the positioning posts 501 at the four corners of the left housing 201 makes the structure more stable.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A high-strength electric sliding rail horizontal actuator for automotive seats, characterized in that: The device includes a thickened lead screw and a reduction gearbox. The reduction gearbox contains a worm gear and a worm shaft that engages with the worm gear. The worm gear has a threaded hole through which the thickened lead screw passes and is threadedly connected. The reduction gearbox has lead screw holes on both sides, coaxial with the threaded holes. The reduction gearbox includes a left housing and a right housing. When the left and right housings are interlocked, they form an internal mounting space for the worm gear and worm shaft. One end of the worm shaft has a transmission hole. A reinforcing block is located on the left housing opposite to the interlocking surface and corresponding to the transmission hole. The reinforcing block has a mounting hole communicating with the mounting space. The mounting hole has an flared opening. Symmetrically arranged weight-reducing recesses are located on the outer walls of the left and right housings facing away from the interlocking surface, on both sides facing the lead screw holes. Each weight-reducing recess has an outwardly protruding arc-shaped block corresponding to the lead screw hole. A grease inlet is located on the top of the reduction gearbox, corresponding to the worm shaft.

2. The electric high-strength slide rail horizontal actuator for automobile seats according to claim 1, characterized in that: The left and right housings are fixedly connected by multiple bolts. The left housing has a countersunk hole on the side facing away from the fastening surface to accommodate the bolt and nut. The right housing has a screw hole that matches the bolt at the position corresponding to the countersunk hole.

3. The electric high-strength slide rail horizontal actuator for automobile seats according to claim 1, characterized in that: Both sides of the turbine are fitted with bushings, and circumferential positioning blocks are provided on the bushings. The circumferential positioning blocks are clamped between the fastening surfaces of the left and right housings.

4. The electric high-strength slide rail horizontal actuator for automobile seats according to claim 1, characterized in that: Positioning components are provided on the fastening surfaces of the left and right boxes. The positioning components include positioning posts and positioning holes adapted to the positioning posts. There are four positioning posts, each located at one of the four corners of the left box. The positioning holes are located on the right box and correspond to the positions of the positioning posts.

Images