CN115946585A - Driving mechanism of electric sliding rail for vehicle seat - Google Patents

Abstract

A driving mechanism of an electric slide rail for a vehicle seat comprises a pair of outer slide rails, wherein the outer slide rails are connected with inner slide rails, the front ends and the rear ends of the inner slide rails are respectively provided with an inner slide rail sliding support frame and a gap eliminating assembly, and a screw rod is arranged in an inner cavity of each outer slide rail; the method is characterized in that: the driving mechanism is provided with a sliding frame plate, a driving motor and a gear box, the sliding frame plate is vertically arranged on the upper surface of the inner sliding rail, and the driving motor is arranged in the middle of the sliding frame plate; the gear box is transversely arranged in the inner cavity of the outer slide rail and is arranged on the screw rod in a penetrating way; the gear box is further provided with a gear box fixing support, the support is fixed with the inner sliding rail and has a distance with the outer sliding rail bottom panel, a locking bolt is arranged on the outer sliding rail bottom panel, the gear box fixing support can move above the locking bolt, and a transmission shaft of the driving motor is connected with a transmission assembly inside the gear box. The structure is simple and compact, the requirement on the working power of the driving motor is relatively low, the heating is reduced, the abnormal sound and noise of the working condition are reduced, and the larger total output power is ensured; the space is saved, and the installation efficiency is improved.

Description

Driving mechanism of electric sliding rail for vehicle seat

Technical Field

The invention belongs to the technical field of automobile seat accessories, and particularly relates to a driving mechanism of an electric slide rail for a vehicle seat.

Background

With the continuous improvement of the intelligent level of the automobile industry in China and the rapid development of the unmanned technology, the seat which is originally only used for long-stroke adjustment by adopting a long slide rail in a large-space automobile model with multiple rows of seats such as MPV (multi-point vehicle velocity) becomes more and more the key point of the current research and development of intelligent automobiles; the above-mentioned car seat slide rail plays a role of changing the front and rear positions of the seat and locking, and this device is one of necessary devices for the car seat. With the continuous progress of electric technology, the position adjustment mode of the vehicle seat is gradually changed from manual adjustment to electric adjustment. Most of the existing electric sliding rail devices are provided with a pair of lower sliding rails arranged on a vehicle body bottom plate, the two lower sliding rails are respectively corresponding to the left side and the right side of the bottom of a vehicle seat, an upper sliding rail is connected to the lower sliding rails in a sliding manner, the upper sliding rail is connected with the vehicle seat, a gear box and a lead screw which are connected in a transmission manner are further arranged in the lower sliding rails, a motor support which extends transversely is further arranged between the two lower sliding rails, the motor support is generally positioned on the left side and the right side of the upper sliding rails, a motor is arranged on the motor support, the motor is respectively connected with the gear boxes on the left side and the right side through a motor shaft, the motor drives the gear box to move back and forth on the lead screw and realize the movement of the upper sliding rail connected with the gear box, and therefore the adjustment of the front position and the rear position of the vehicle seat is realized.

Related technical information on the electric rail device of the vehicle seat is found in the published chinese patent documents, and some examples are CN202557331U (an electric rail for a car seat), CN216331569U (an electric long rail contributing to improvement of transmission noise), CN112537231A (an automatic rail device for a car seat), and so on. The typical "automobile seat electric long slide rail and transmission method thereof" provided by chinese patent document No. CN113147527B of chinese patent application includes a right slide rail and a left slide rail, both the right slide rail and the left slide rail include an upper slide rail and a lower slide rail which are connected in a sliding manner, a screw rod transmission mechanism and a gear box, the screw rod transmission mechanism includes a screw rod and two linked worm and gear transmission cases, the screw rod is in transmission connection with the two worm and gear transmission cases, the screw rod is fixedly installed on the lower slide rail, the gear box and the two worm and gear transmission cases are both installed on the upper slide rail, the gear box is in transmission connection with one of the worm and gear transmission cases, a motor assembly is arranged in front of the left slide rail and the right slide rail, the motor assembly includes a double-shaft motor and a transverse support, both ends of the transverse support are respectively fixedly connected with the two upper slide rails of the right slide rail and the left slide rail, both output shafts of the double-shaft motor are connected with rotating shafts, and the two rotating shafts are respectively in transmission connection with the two gear transmission cases; although the two linked worm and gear transmission boxes are in transmission connection with the lead screw, the strength is high, the lead screw is not easy to be subjected to bending deformation, and the motor can be conveniently installed; however, the long slide rail structure still has the general disadvantages of the slide rail structure in the prior art: the single double-shaft motor is arranged to drive the gearboxes on the two sides to realize the movement of the upper sliding rails, so that on one hand, the structure of parts is complex, the number of the parts is large, more space is occupied, on the other hand, the single motor drives the sliding rails on the two sides to move simultaneously, the motor is inevitably required to have larger power, the cost is higher, the phenomena of shaking and shaking can occur when the motor starts to work, meanwhile, the motor generates heat obviously in the working process, larger working abnormal noise exists, the power loss is larger in the running process, the output of larger torque cannot be ensured, and the applicability is poorer; in addition, as the transverse support is required to be arranged between the sliding rails on the two sides for arranging the motor, the space at the bottom of the seat can be greatly occupied, when foreign matters enter, the risk of mutual interference among the motor, the transverse support and a motor shaft exists, and the operation safety risk is increased; finally, the existing lower sliding rail fixedly connected with the vehicle body bottom plate is complex in internal structure, and when the lower sliding rail is installed with the vehicle body bottom plate, connecting parts such as a fixing frame and the like are usually required to be additionally arranged at the bottom of the lower sliding rail, so that the installation is complex, and meanwhile, the unnecessary part cost is increased.

In view of the above, there is a need for a driving mechanism for slide rails, which has a simple structure and high strength, and can effectively solve the problems caused by driving two sets of slide rails by the same motor. The applicant has made an advantageous design for this purpose, in the context of which the solution to be described below is made.

Disclosure of Invention

The invention aims to provide a driving mechanism of an electric sliding rail for a vehicle seat, which has the advantages of compact structure, convenience in installation, high strength and wide application range, is beneficial to effectively improving the transmission efficiency and reducing the noise of abnormal sounds by abandoning the driving mode that the original two groups of sliding rails are driven by the same motor and adopting a single motor to respectively drive single-side sliding rails, is beneficial to simplifying the transmission mode so as to reduce the number of parts and improve the installation efficiency, and is convenient to realize the direct connection of an outer sliding rail bottom plate and a vehicle body bottom plate by means of bolts by optimizing the internal structure so as to release the bottom space of the vehicle and reduce the production cost.

The invention aims to solve the problem that the driving mechanism of the electric slide rail for the vehicle seat comprises a pair of outer slide rails, wherein the outer slide rails are connected with an inner slide rail in a sliding manner, an outer slide rail inner cavity is formed inside the outer slide rails, an outer slide rail open slot with an upward opening is formed at the upper part of the outer slide rails, the outer slide rails are also provided with an outer slide rail bottom panel, the inner slide rails are arranged at the top parts of the outer slide rails and correspond to the outer slide rail open slot, the front end parts and the rear end parts in the length direction of the inner slide rails are respectively provided with an inner slide rail sliding support frame and an anti-backlash assembly which can roll on the outer slide rail bottom panel, and a screw rod which is arranged in an extending manner along the length direction is fixedly arranged in the outer slide rail inner cavity; is characterized in that: the driving mechanism is provided with a sliding frame plate fixedly connected with the automobile seat, a driving motor and a gear box, the sliding frame plate is vertically arranged and installed on the surface of the inner slide rail, which faces the upper side, and the driving motor is installed in the middle of the sliding frame plate in the length direction and is connected with a transmission shaft; the gear box is transversely arranged in the inner cavity of the outer slide rail and penetrates through the rod body of the screw rod, and the gear box is in sliding connection with the screw rod through a gear transmission assembly in the gear box; the gearbox is characterized in that a gearbox fixing support is further mounted on the gearbox, the gearbox fixing support and the inner sliding rail are fixedly mounted together, so that the connection between the gearbox and the inner sliding rail is achieved, a distance exists between the gearbox fixing support and the outer sliding rail bottom panel, a plurality of locking bolts penetrate through the outer sliding rail bottom panel of the outer sliding rail, the gearbox fixing support can reciprocate at positions above the locking bolts, and a transmission shaft of a driving motor extends downwards and penetrates through the inner sliding rail to stretch into an inner cavity of the outer sliding rail and be in transmission connection with a transmission assembly inside the gearbox.

In a specific embodiment of the present invention, a transmission shaft cover plate is fixedly installed on a side surface of the carriage plate and at a position corresponding to a position below the driving motor, a transmission shaft positioning protection sleeve is further convexly formed at a middle portion of the transmission shaft cover plate, and a transmission shaft of the driving motor is sleeved in the transmission shaft positioning protection sleeve.

In another specific embodiment of the invention, a carriage plate connecting nut is mounted on the top of each of the two ends of the carriage plate in the length direction, and the carriage plate is fixedly connected with the car seat through the two carriage plate connecting nuts.

In another embodiment of the present invention, the gear box fixing bracket has a gear box fixing bracket bottom panel and a pair of gear box fixing bracket side panels formed on the front and rear sides of the gear box fixing bracket bottom panel, two gear box fixing bracket connecting protrusions are formed on the top portions of the pair of gear box fixing bracket side panels, and inner rail positioning grooves are formed on the inner rails and at positions corresponding to the gear box fixing bracket connecting protrusions, and a plurality of the gear box fixing bracket connecting protrusions are fitted in the corresponding inner rail positioning grooves, so as to realize the positioning connection between the gear box fixing bracket and the inner rail body.

In another embodiment of the present invention, a locking bolt receding groove is further formed at a bottom portion of the gear box fixing bracket, and a nut of the locking bolt installed on the bottom panel of the outer slide rail can pass through the locking bolt receding groove during the movement of the gear box fixing bracket.

In another specific embodiment of the present invention, the outer slide rail has a square tube structure, the opening of the outer slide rail is upward, the outer slide rail further has outer slide rail side panels formed on both sides of the bottom panel of the outer slide rail, and the top edge portions of the two outer slide rail side panels further respectively form an outer slide rail bending portion, the cross section of the outer slide rail bending portion is a reversed U-shaped structure with the opening facing downward, the left and right edge portions in the length direction of the inner slide rail also respectively form an inner slide rail bending portion, the cross section of the inner slide rail bending portion is a reversed U-shaped structure with the opening facing upward, and the inner slide rail bending portions on both sides of the inner slide rail are respectively matched with the corresponding outer slide rail bending portions to realize the sliding matching of the inner slide rail and the outer slide rail.

In a further specific embodiment of the present invention, a dust-proof strip assembly is further disposed on the upper portion of the outer slide rail, and the dust-proof strip assembly includes a pair of main body dust-proof strips, a pair of dust-proof strip reinforcing frames, and a plurality of dust-proof strip brackets; two the dust strip enhancement frame is L shaped plate element structure and cooperates respectively and settles on the outer slide rail portion of bending that corresponds separately, and the position department below two dust strip enhancement frame length direction's both ends tip still is provided with a dust strip enhancement frame bearing, dust strip enhancement frame bearing fixed position is installed on the outer slide rail bottom surface board of outer slide rail, and two the main part dust strip is then settled respectively on two dust strip enhancement frames, and just two main part dust strips all include the main part dust strip transverse plate that a level set up and constitute the main part dust strip vertical slab in this main part dust strip transverse slab bottom, and the main part dust strip transverse slab of two main part dust strips sets up on the upper portion of outer slide rail open slots and shelter from outer slide rail open slots jointly, and a plurality of the dust strip support is then installed at the interval on the outer slide rail side board of the left and right sides of outer slide rail and set up along vertical direction, and the top position of dust strip support is connected with the main part dust strip that corresponds separately more to realize the location installation of main part dust strip and outer slide rail.

In a more specific embodiment of the present invention, a front screw rod support and a rear screw rod support are respectively disposed at front and rear two sides of the screw rod in the length direction, the front and rear ends of the screw rod in the length direction are respectively inserted into the front screw rod support and the rear screw rod support, and the front screw rod support and the rear screw rod support are both fixedly mounted on the bottom panel of the outer slide rail through a fastener; and the rod body of the screw rod is also provided with a screw rod guide sleeve.

In a further specific embodiment of the present invention, the cross section of the inner rail sliding support frame at the front and rear sides of the inner rail is in a structure like a shape like a Chinese character 'tu', and a rolling bearing is pivoted on both side plates at the bottom of the inner rail sliding support frame, a bearing pin is connected between the rolling bearing and the side plate of the inner rail sliding support frame, and the rolling bearing is supported on the bottom plate of the outer rail and can roll back and forth thereon.

In yet a more particular embodiment of the present invention, the anti-backlash assembly has an anti-backlash support frame, a pair of diagonal friction plates, and a pair of vertical friction plates; the anti-backlash support frame is provided with an anti-backlash support frame top panel, the anti-backlash support frame top panel is attached to one side surface of the inner slide rail facing downwards, the anti-backlash support frame top panel is fixed with the inner slide rail through a fastener so as to realize the connection of the anti-backlash support frame and the inner slide rail, the positions of the left side and the right side of the bottom of the anti-backlash support frame are respectively provided with an anti-backlash support frame inclined side plate and an anti-backlash support frame vertical side plate, an outer slide rail inclined plate is arranged between the outer slide rail side plate of the outer slide rail and the bending part of the outer slide rail, and the outer slide rail inclined plate and the anti-backlash support frame inclined side plate are correspondingly arranged; the pair of oblique friction plates are respectively installed on oblique side plates of the gap eliminating support frames on two sides of the gap eliminating support frame through fasteners, and are respectively attached to and contacted with inner side walls of the oblique plates of the outer slide rail.

Due to the adoption of the structure, compared with the prior art, the invention has the beneficial effects that: firstly, a driving mechanism is arranged on a single-group outer slide rail, the driving mode that the original two groups of slide rails are driven by the same motor is abandoned, an inner slide rail in the outer slide rail drives a gear box to move through a driving motor to realize the self front and back movement, the internal structure is simple and compact, the requirement on the working power of the driving motor is relatively low, the heating is effectively reduced, the working condition abnormal sound and noise are reduced, meanwhile, the independent driving motor is arranged on the single-group outer slide rail, so that the driving mode of double motors can ensure the larger total output power, the gear transmission structure is effectively simplified, and the output of larger torque and power can be realized for the automobile seat; in addition, because the independent driving motors are arranged on the single group of outer sliding rails, the shaft connecting frames and other holding frames do not need to be arranged between the two groups of sliding rails for connection when the single group of outer sliding rails are driven by the same motor, so that the space can be effectively saved, the parts at the bottom of the seat are reduced, and the installation efficiency is improved; finally, because the gear box transversely sets up and there is the distance between gear box fixed bolster and the outer slide rail bottom panel, therefore can be in the assembly on outer slide rail bottom panel direct mount can with the locking bolt of vehicle body bottom connection, and need not to set up on the outer slide rail bottom and realize fixed connection's link with vehicle body bottom, adapting unit such as fixed plate, the inner structure has further effectively been simplified, the space of seat bottom has been released, inside also can prevent parts such as receiver, the space has been left for subsequent optimization upgrading, and when having promoted the operational safety, the convenience of assembly has also been improved once more and reduction in production cost.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the embodiment shown in fig. 1.

Fig. 3 is a plan view of the internal structure of the embodiment shown in fig. 1.

In the figure: 1. the structure comprises an outer slide rail, 11 parts of an inner cavity of the outer slide rail, 12 parts of an open slot of the outer slide rail, 13 parts of a bottom panel of the outer slide rail, 131 parts of a locking bolt, 14 parts of a side panel of the outer slide rail, 15 parts of a bent part of the outer slide rail and 16 parts of an inclined plate of the outer slide rail; 2. the anti-backlash device comprises an inner slide rail, 21. An inner slide rail slide support frame, 211. A rolling bearing, 212. A bearing pin, 22. An anti-backlash assembly, 221. An anti-backlash support frame, 2211. An anti-backlash support frame top panel, 2212. An anti-backlash support frame inclined side plate, 2213. An anti-backlash support frame vertical side plate, 222. An inclined friction plate, 223. A vertical friction plate, 23. An inner slide rail positioning groove and 24. An inner slide rail bending part; 3. the screw rod, 31, a front screw rod support, 32, a rear screw rod support and 33, a screw rod guide sleeve; 4. the transmission shaft positioning device comprises a sliding frame plate, 41 transmission shaft cover plates, 411 transmission shaft positioning protective sleeves and 42 sliding frame plate connecting nuts; 5. a drive motor 51. A transmission shaft; 6. the gearbox fixing support comprises a gearbox, 61, a gearbox fixing support, 611, a gearbox fixing support bottom panel, 612, a gearbox fixing support side panel, 613, a gearbox fixing support connecting protrusion, 614 and a locking bolt abdicating groove; 7. the dustproof strip assembly comprises a dustproof strip assembly 71, a main body dustproof strip 711, a main body dustproof strip transverse plate 712, a main body dustproof strip vertical plate 72, a dustproof strip reinforcing frame 721, a dustproof strip reinforcing frame supporting seat 73 and a dustproof strip support.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position corresponding to that shown in fig. 1, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 1, and combining fig. 2 and fig. 3, a driving mechanism of an electric slide rail for a vehicle seat is shown, the electric slide rail includes a pair of outer slide rails 1 oppositely disposed and positioned at the left and right sides of the bottom of the vehicle seat, an inner slide rail 2 is slidably connected to the outer slide rails 1, an outer slide rail cavity 11 is formed inside the outer slide rail 1, an outer slide rail open slot 12 with an upward opening is formed at the upper portion of the outer slide rail 1, the outer slide rail 1 further includes an outer slide rail bottom panel 13, the inner slide rail 2 is disposed at the top of the outer slide rail 1 and corresponds to the outer slide rail open slot 12, an inner slide rail sliding support frame 21 and an anti-backlash assembly 22 capable of rolling on the outer slide rail bottom panel 13 are respectively disposed at the front and rear ends of the inner slide rail 2 in the length direction, the anti-backlash assembly 22 is in contact with the inner side wall of the outer slide rail 1, when the inner slide rail 2 slides on the outer slide rail 1, the anti-backlash assembly 22 can effectively eliminate a gap between the inner slide rail 1 and ensure that the inner slide rail 2 stably runs along the inner slide rail cavity of the inner slide rail, and the inner slide rail 2 is further installed with a screw rod, and the inner slide rail 11 extending in the outer slide rail cavity.

The technical key points of the technical scheme provided by the invention are as follows: the driving mechanism comprises a sliding frame plate 4 fixedly connected with the automobile seat, a driving motor 5 and a gear box 6; the sliding frame plate 4 is vertically arranged and installed on the surface of the inner sliding rail 2 facing the upper side, the driving motor 5 is installed at the middle position of the sliding frame plate 4 in the length direction and is connected with a transmission shaft 51, and the transmission shaft 51 is a flexible shaft; the gear box 6 is transversely arranged in the inner cavity 11 of the outer slide rail and penetrates through the rod body of the screw rod 3, and the gear box 6 is in sliding connection with the screw rod 3 through a gear transmission assembly in the gear box; a gear box fixing bracket 61 is further mounted on the gear box 6, the gear box fixing bracket 61 is fixedly mounted with the inner slide rail 2, so that the connection between the gear box 6 and the inner slide rail 2 is realized, a distance exists between the gear box fixing bracket 61 and the outer slide rail bottom panel 13, a plurality of locking bolts 131 are further arranged on the outer slide rail bottom panel 13 of the outer slide rail 1 in a penetrating manner, the gear box fixing bracket 61 can reciprocate at positions above the locking bolts 131, and a transmission shaft 51 of the driving motor 5 extends downwards and is arranged to penetrate through the inner slide rail 2 to extend into the inner cavity 11 of the outer slide rail to be in transmission connection with a transmission assembly inside the gear box 6.

During specific installation, two independent outer sliding rails 1 are symmetrically arranged on two sides of the bottom of the vehicle seat, and connection through long motor shaft connecting frames and other holding frames is not needed, so that the vehicle seat 1 can be installed only by ensuring that the relative positions of the inner sliding rails 2 arranged on the two outer sliding rails 1 are kept unchanged during actual installation, the complexity of the installation process is well reduced, and the installation efficiency is improved; meanwhile, the double-motor driving mode can effectively achieve larger total output power and torque, and the application range is wide.

It should be noted that the gear box 6 is transversely arranged, the upper end of the transmission shaft 51 is vertically arranged to be in transmission connection with the output end of the driving motor 5, the lower end of the transmission shaft 51 is inserted into a circular hole above the gear box 6, meanwhile, the screw rod 3 is connected with a gear transmission assembly inside the gear box 6, the driving motor 5 drives the gear box fixing support 61 and the inner slide rail 2 to move back and forth on the screw rod 3 through the driving transmission shaft 41 and the gear box 6 in transmission connection with the driving transmission shaft, and the transmission mode is simple and reliable; and because the gear box 6 is transversely arranged, the inner part of the inner cavity 11 of the outer slide rail in the outer slide rail 1 has a free space, and the gear box fixing support 61 and the outer slide rail bottom panel 13 keep a distance, a locking bolt 131 connected with a vehicle body bottom plate can be arranged between the outer slide rail bottom panels 13 during installation, and a connecting frame is not required to be arranged on the outer slide rail 1, so that the installation structure of the outer slide rail 1 and the vehicle body bottom plate is simplified, the assembly is convenient, and the production cost can be saved.

Referring to fig. 2 and 3, a transmission shaft cover plate 41 is fixedly mounted on a side surface of the slide frame plate 4 and at a position corresponding to a lower portion of the driving motor 5, a transmission shaft positioning protection sleeve 411 is further protrudingly formed in a middle portion of the transmission shaft cover plate 41, and a transmission shaft 51 of the driving motor 5 is sleeved in the transmission shaft positioning protection sleeve 411.

Further, a carriage plate connecting nut 42 is mounted on the top of each of the two ends of the carriage plate 4 in the length direction, and the carriage plate 4 is fixedly connected with the car seat through the two carriage plate connecting nuts 42.

In the present embodiment, the gear box fixing bracket 61 includes a gear box fixing bracket bottom panel 611 and a pair of gear box fixing bracket side panels 612 formed on the front and rear sides of the gear box fixing bracket bottom panel 611, two gear box fixing bracket connecting protrusions 613 are formed on the top of the pair of gear box fixing bracket side panels 612, inner rail positioning grooves 23 are formed on the inner rail 2 at positions corresponding to the gear box fixing bracket connecting protrusions 613, and the plurality of gear box fixing bracket connecting protrusions 613 are fitted into the corresponding inner rail positioning grooves 23, thereby positioning and connecting the gear box fixing bracket 61 and the inner rail 2 body.

Further, a locking bolt relief groove 614 is formed at a bottom portion of the gear box fixing bracket 61, and a nut of the locking bolt 131 mounted on the outer rail bottom panel 13 can pass through the locking bolt relief groove 614 during the movement of the gear box fixing bracket 61.

Referring to fig. 2 and combining with fig. 3 again, the outer slide rail 1 has a square tube structure and the opening of the outer slide rail 1 is upward, the outer slide rail 1 further has outer slide rail side panels 14 formed on both sides of the outer slide rail bottom panel 13, and the top edge portions of the two outer slide rail side panels 14 further respectively form an outer slide rail bending portion 15, the cross section of the outer slide rail bending portion 15 is a reversed U-shaped structure with the opening facing downward, and the left and right edge portions of the length direction of the inner slide rail 2 also respectively form an inner slide rail bending portion 24, the cross section of the inner slide rail bending portion 24 is a U-shaped structure with the opening facing upward, and the inner slide rail bending portions 24 on both sides of the inner slide rail 2 are respectively matched with the corresponding outer slide rail bending portions 15 to realize the sliding matching of the inner slide rail 2 and the outer slide rail 1.

In this embodiment, a dust-proof strip assembly 7 is further disposed on the upper portion of the outer slide rail 1, and the dust-proof strip assembly 7 includes a pair of main dust-proof strips 71, a pair of dust-proof strip reinforcing frames 72, and a plurality of dust-proof strip brackets 73; the two dustproof strip reinforcing frames 72 are of an L-shaped plate structure and are respectively arranged on the corresponding outer slide rail bending portions 15 in a matched manner, a dustproof strip reinforcing frame supporting seat 721 is further arranged at the positions below the two end portions of the two dustproof strip reinforcing frames 72 in the length direction, the dustproof strip reinforcing frame supporting seat 721 is positioned and installed on the outer slide rail bottom surface plate 13 of the outer slide rail 1, the two main dustproof strips 71 are respectively arranged on the two dustproof strip reinforcing frames 72, the two main dustproof strips 71 respectively comprise a horizontally arranged main dustproof strip transverse plate 711 and a main dustproof strip vertical plate 712 formed at the bottom of the main dustproof strip transverse plate 711, the main dustproof strip transverse plates 711 of the two main dustproof strips 71 are arranged on the upper portions of the outer slide rail open grooves 12 and jointly shield the outer slide rail open grooves 12, the plurality of dustproof strip brackets 73 are arranged on the outer slide rail side plates 14 on the left side and the right side of the outer slide rail 1 at intervals and are arranged along the vertical direction, the top end portions of the dustproof strip brackets 73 are connected with the corresponding main dustproof strips 71, and the main dustproof strips 71 are positioned and installed on the outer slide rail 1.

It should be noted that, this dust-proof strip subassembly 7 is compact and can realize the reliable location with outer slide rail 1 and be connected, when outer slide rail 1 overall arrangement is in the vehicle body floor, prevents effectively that dust and other foreign matters from getting into in outer slide rail 1 to main part dust-proof strip 71 can make the vehicle body floor be big planar structure, increases practicality and aesthetic property.

Further, a front screw rod support 31 and a rear screw rod support 32 are respectively arranged at the front side and the rear side of the screw rod 3 in the length direction, the front end and the rear end of the screw rod 3 in the length direction are respectively arranged in the front screw rod support 31 and the rear screw rod support 32 in a penetrating manner, and the front screw rod support 31 and the rear screw rod support 32 are both fixedly arranged on the outer slide rail bottom panel 13 through a fastener; a screw rod guide sleeve 33 is also mounted on the rod body of the screw rod 3.

In the present embodiment, the cross section of the inner rail sliding support frame 21 at the front and rear sides of the inner rail 2 is in a structure like a "convex" shape, and a rolling bearing 211 is pivoted on both side plates at the bottom of the inner rail sliding support frame 21, a bearing pin 212 is connected between the rolling bearing 211 and the side plate of the inner rail sliding support frame 21, and the rolling bearing 211 is supported on the outer rail bottom plate 13 of the outer rail 1 and can roll back and forth thereon.

Furthermore, the anti-backlash assembly 22 comprises an anti-backlash support frame 221, a pair of oblique friction plates 222 and a pair of vertical friction plates 223, wherein the anti-backlash support frame 221 is made of a spring piece; the anti-backlash support frame 221 is provided with an anti-backlash support frame top panel 2211, the anti-backlash support frame top panel 2211 is attached to one downward side surface of the inner slide rail 2, the anti-backlash support frame top panel 2211 is fixed with the inner slide rail 2 through a fastener, so that the anti-backlash support frame 221 is connected with the inner slide rail 2, anti-backlash support frame inclined side plates 2212 and anti-backlash support frame vertical side plates 2213 are formed at the left side and the right side of the bottom of the anti-backlash support frame 221 respectively, an outer slide rail inclined plate 16 is formed between an outer slide rail side plate 14 of the outer slide rail 1 and an outer slide rail bending portion 15, and the outer slide rail inclined plate 16 and the anti-backlash support frame inclined side plates 2212 are arranged correspondingly; similarly, a pair of the aforementioned vertical friction plates 223 are respectively mounted on the vertical side plates 2213 of the anti-backlash support frame 221 by fasteners, and the pair of the vertical friction plates 223 are respectively attached to the inner side walls of the body of the outer slide rail side plate 14. The inclined friction plate 222 and the vertical friction plate 223 of the anti-backlash assembly 22 are always attached to the inner side wall of the outer slide rail 1 under the elastic action of the elastic anti-backlash support frame 221, so that the gap between the outer slide rail 1 and the inner slide rail 2 is effectively eliminated, and the sliding smoothness of the inner slide rail 2 is ensured.

Referring to fig. 1 to 3, the applicant briefly describes the working principle of the technical solution provided by the present invention: firstly, during assembly, two corresponding outer slide rails 1 are fixedly mounted on a vehicle body bottom plate through locking bolts 131, then a gear box 6 and an inner slide rail 2 with a gap eliminating assembly 22 are arranged in the outer slide rails 1, then a screw rod 3 and a driving motor 5 are arranged, transmission connection of a transmission shaft 51 and the gear box 6 is realized, then a dustproof strip assembly 7 is mounted, and finally, an automobile seat is placed on a slide frame plate 4 and is fixedly mounted through a slide frame plate connecting nut 42. When a driver and an occupant carry out front-and-back movement operation on the seat according to actual riding experience requirements, the external controller is operated to control the driving motor 5 to work, the transmission shafts 51 of the driving motors 32 on the two-side outer slide rails 1 drive transmission gear assemblies inside the gear box 6 to work, so that the gear box 6 is driven to move back and forth on the screw rod 3, the gear box fixing support slide seat 61 of the gear box 6 drives the inner slide rail 2 to move back and forth, and finally the vehicle seat connected with the inner slide rail 2 is driven to move back and forth to realize adjustment.

In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.

Claims (10)

1. A driving mechanism of an electric sliding rail for a vehicle seat comprises a pair of outer sliding rails (1), wherein the outer sliding rails (1) are connected with an inner sliding rail (2) in a sliding manner, an outer sliding rail inner cavity (11) is formed inside the outer sliding rail (1), an outer sliding rail open slot (12) with an upward opening is formed in the upper portion of the outer sliding rail (1), the outer sliding rail (1) is further provided with an outer sliding rail bottom panel (13), the inner sliding rail (2) is arranged at the top of the outer sliding rail (1) and corresponds to the position of the outer sliding rail open slot (12), an inner sliding rail sliding support frame (21) and an anti-backlash component (22) which can roll on the outer sliding rail bottom panel (13) are respectively arranged at the front end portion and the rear end portion of the inner sliding rail (2) in the length direction, and a screw rod (3) which extends along the length direction is fixedly arranged in the outer sliding rail inner cavity (11); the method is characterized in that: the driving mechanism is provided with a sliding frame plate (4) fixedly connected with the automobile seat, a driving motor (5) and a gear box (6), the sliding frame plate (4) is vertically arranged and installed on the upper side surface of the inner slide rail (2), and the driving motor (5) is installed in the middle of the sliding frame plate (4) in the length direction and is connected with a transmission shaft (51); the gear box (6) is transversely arranged in the inner cavity (11) of the outer sliding rail and penetrates through the rod body of the screw rod (3), and the gear box (6) is in sliding connection with the screw rod (3) through a gear transmission assembly in the gear box; still install a gear box fixed bolster (61) on this gear box (6), this gear box fixed bolster (61) with interior slide rail (2) fixed mounting together to realize being connected of gear box (6) and interior slide rail (2), and there is the distance between gear box fixed bolster (61) and outer slide rail bottom surface board (13), and still wear to be equipped with a plurality of locking bolt (131) on outer slide rail bottom surface board (13) of outer slide rail (1), gear box fixed bolster (61) can be at the top position reciprocating motion of a plurality of locking bolt (131), transmission shaft (51) of driving motor (5) downwardly extending sets up and pass interior slide rail (2) stretch into in outer slide rail inner chamber (11) with the transmission assembly of gear box (6) inside realizes the transmission and is connected.

2. The drive mechanism of an electric slide for a vehicle seat according to claim 1, characterized in that: a transmission shaft cover plate (41) is fixedly installed on the surface of one side of the sliding frame plate (4) and at a position corresponding to the lower part of the driving motor (5), a transmission shaft positioning protective sleeve (411) is convexly arranged in the middle of the transmission shaft cover plate (41), and a transmission shaft (51) of the driving motor (5) is sleeved in the transmission shaft positioning protective sleeve (411).

3. The drive mechanism of an electric slide rail for a vehicle seat according to claim 1, characterized in that: and the tops of the end parts of the two ends of the sliding frame plate (4) in the length direction are respectively provided with a sliding frame plate connecting nut (42), and the sliding frame plate (4) is fixedly connected with the automobile seat through the two sliding frame plate connecting nuts (42).

4. The drive mechanism of an electric slide for a vehicle seat according to claim 1, characterized in that: the gear box fixing support (61) is provided with a gear box fixing support bottom panel (611) and a pair of gear box fixing support side panels (612) which are formed on the front side and the rear side of the gear box fixing support bottom panel (611), two gear box fixing support connecting protrusions (613) are formed on the top parts of the gear box fixing support side panels (612), inner slide rail positioning grooves (23) are formed in the positions, corresponding to the gear box fixing support connecting protrusions (613), on the inner slide rail (2), and the gear box fixing support connecting protrusions (613) are installed in the corresponding inner slide rail positioning grooves (23) in a matched mode, so that the gear box fixing support (61) is connected with the inner slide rail (2) in a positioning mode.

5. The drive mechanism of an electric slide rail for a vehicle seat according to claim 1, characterized in that: and a locking bolt abdicating groove (614) is also formed in the bottom part of the gear box fixing support (61), and a nut of a locking bolt (131) arranged on the outer slide rail bottom panel (13) can penetrate through the locking bolt abdicating groove (614) in the moving process of the gear box fixing support (61).

6. The drive mechanism of an electric slide rail for a vehicle seat according to claim 1, characterized in that: the outer slide rail (1) is of a square pipe structure, the opening of the outer slide rail (1) faces upwards, the outer slide rail (1) is further provided with outer slide rail side panels (14) which are formed on two sides of an outer slide rail bottom panel (13), an outer slide rail bending portion (15) is further formed on the top edge portions of the two outer slide rail side panels (14) respectively, the cross section of the outer slide rail bending portion (15) is of an inverted U-shaped structure with the opening facing downwards, inner slide rail bending portions (24) are formed on the left side edge portions and the right side edge portions of the length direction of the inner slide rail (2) respectively, the cross section of each inner slide rail bending portion (24) is of a U-shaped structure with the opening facing upwards, and the inner slide rail bending portions (24) on two sides of the inner slide rail (2) are matched with the corresponding outer slide rail bending portions (15) respectively to realize the sliding matching of the inner slide rail (2) and the outer slide rail (1).

7. The drive mechanism of an electric slide rail for a vehicle seat according to claim 6, characterized in that: the upper part of the outer slide rail (1) is also provided with a dustproof strip assembly (7), and the dustproof strip assembly (7) comprises a pair of main dustproof strips (71), a pair of dustproof strip reinforcing frames (72) and a plurality of dustproof strip brackets (73); the two dustproof strip reinforcing frames (72) are of an L-shaped plate structure and are respectively arranged on the corresponding outer slide rail bending part (15) in a matched mode, a dustproof strip reinforcing frame supporting seat (721) is further arranged at the position below the end parts of the two ends of the two dustproof strip reinforcing frames (72) in the length direction, the dustproof strip reinforcing frame supporting seat (721) is arranged on the outer slide rail bottom panel (13) of the outer slide rail (1) in a positioned mode, the two dustproof strip reinforcing frames (71) are respectively arranged on the two dustproof strip reinforcing frames (72), the two main dustproof strips (71) comprise a main dustproof strip transverse plate (711) which is horizontally arranged and a main dustproof strip vertical plate (712) which forms the bottom of the main dustproof strip transverse plate (711) respectively, the main dustproof strip transverse plates (711) of the two main dustproof strips (71) are arranged on the upper portion of the outer slide rail open groove (12) and jointly shield the outer slide rail (12), the plurality of dustproof strips (73) are arranged on the outer slide rail open groove (1) at intervals and are connected with the main dustproof strip reinforcing frame (71) at the left side and right side of the slide rail open groove (14), and the main dustproof strip supporting frame (71) respectively, and the main dustproof strip reinforcing frame (73) are arranged and the main dustproof strip reinforcing frame (71) and are connected along the top end of the main body vertical plate (14).

8. The drive mechanism of an electric slide for a vehicle seat according to claim 1, characterized in that: a front screw rod support (31) and a rear screw rod support (32) are respectively arranged at the front side and the rear side of the screw rod (3) in the length direction, the front end and the rear end of the screw rod (3) in the length direction respectively penetrate through the front screw rod support (31) and the rear screw rod support (32), and the front screw rod support (31) and the rear screw rod support (32) are fixedly arranged on the outer slide rail bottom panel (13) through a fastener; and a screw rod guide sleeve (33) is also arranged on the rod body of the screw rod (3).

9. The drive mechanism of an electric slide rail for a vehicle seat according to claim 1, characterized in that: the cross section of the inner sliding rail sliding support frame (21) on the front side and the rear side of the inner sliding rail (2) is of a structure similar to a convex shape, the two side plates at the bottom of the inner sliding rail sliding support frame (21) are respectively pivoted with a rolling bearing (211), a bearing pin (212) is connected between the rolling bearing (211) and the side plates of the inner sliding rail sliding support frame (21), and the rolling bearing (211) is supported on the outer sliding rail bottom surface plate (13) of the outer sliding rail (1) and can roll on the outer sliding rail bottom surface plate in a reciprocating mode.

10. The drive mechanism of an electric slide for a vehicle seat according to claim 6, characterized in that: the anti-backlash assembly (22) is provided with an anti-backlash support frame (221), a pair of oblique friction plates (222) and a pair of vertical friction plates (223); the anti-backlash support frame (221) is provided with an anti-backlash support frame top panel (2211), the anti-backlash support frame top panel (2211) is attached to the surface of one downward side of the inner slide rail (2), the anti-backlash support frame top panel (2211) is fixed with the inner slide rail (2) through a fastener so as to realize the connection of the anti-backlash support frame (221) and the inner slide rail (2), the positions of the left side and the right side of the bottom of the anti-backlash support frame (221) are respectively provided with an anti-backlash support frame inclined side plate (2212) and an anti-backlash support frame vertical side plate (2213), an outer slide rail inclined plate (16) is further formed between an outer slide rail side plate (14) of the outer slide rail (1) and an outer slide rail bending part (15), and the outer slide rail inclined plate (16) and the anti-backlash support frame side plate (2212) are arranged in an inclined manner; the pair of inclined friction plates (222) are respectively arranged on inclined side plates (2212) of the anti-backlash support frames on two sides of the anti-backlash support frame (221) through fasteners, the pair of inclined friction plates (222) are respectively attached to and contacted with inner side walls of the outer slide rail inclined plates (16), similarly, the pair of vertical friction plates (223) are respectively arranged on vertical side plates (2213) of the anti-backlash support frames on two sides of the anti-backlash support frame (221) through fasteners, and the pair of vertical friction plates (223) are respectively attached to and contacted with inner side walls of the body of the outer slide rail side plate (14).

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