CN114537231A

CN114537231A - Electric seat slide rail assembly

Info

Publication number: CN114537231A
Application number: CN202011330653.8A
Authority: CN
Inventors: 范业帝; 张江林; 熊丁; 孙继国; 赵丹
Original assignee: Nuo Chuang Auto Technology Shanghai Co ltd
Current assignee: Nuo Chuang Auto Technology Shanghai Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2022-05-27

Abstract

The invention provides an electric seat slide rail assembly which comprises a slide rail mechanism, a driving mechanism and an unlocking mechanism, wherein the slide rail mechanism comprises a lower slide rail component with a lower rail and an upper slide rail component with an upper rail arranged in the lower rail in a sliding manner, a plurality of locking holes arranged at intervals along the length direction of the lower rail are arranged on the lower rail, and locking components arranged in a manner of being matched with the locking holes are arranged on the upper rail; the driving mechanism comprises a driving motor and driving brake cable assemblies which are synchronously driven by the driving motor and are respectively arranged on the upper rails at two sides, and each driving brake cable assembly is provided with two driving brake cables which are reversely wound and are respectively connected with two ends of the lower rail; the unlocking mechanism comprises an unlocking motor and two unlocking brake lines which are wound and synchronously driven by the unlocking motor, and each unlocking brake line is respectively connected with the locking assemblies on the two sides. The driving brake cable is adopted to drive the upper rail to slide, so that the cost of the driving mechanism can be reduced, and the running smoothness and the sound quality of the sliding rail can be ensured.

Description

Electric seat slide rail assembly

Technical Field

The invention relates to the technical field of seat slide rails, in particular to an electric seat slide rail assembly.

Background

Among the multiple vehicle models, the MPV vehicle model is increasingly favored by the terminal customer due to its larger passenger space and comfortable riding environment, and also becomes one of the growth points of each whole vehicle factory in the future. Because the front and rear stroke adjusting range of the two-row seat can directly influence the flexibility and comfort of a sitting space, the two-row seat and the three-row seat are mostly applied to long-slide seats. And long slide rail technique also possesses higher strategic prospect as the supporting platform technique of future intelligent passenger cabin.

However, most of the existing long sliding rails are steel upper and lower rails or steel upper rail and aluminum lower rail, which are not light in weight and not durable, and the upper and lower rails are also of a simple sliding fit structure, and are not enough in use quality. Meanwhile, the existing long sliding rail structure generally has the defect that a locking mechanism for locking the upper sliding rail and the lower sliding rail is complex.

In addition, the existing long slide rail structure mostly adopts a drive form of a turbine screw or a gear rack, and the two drive forms are both rigid drive, so that the smoothness and the noise in the operation process are greatly influenced by the dimensional accuracy of parts and the matching accuracy of an upper rail and a lower rail, and the jitter and the abnormal sound can be hardly eliminated completely. And no matter in the form of a turbine screw or a gear rack, the problems of complex processing technology and higher cost exist.

Disclosure of Invention

Accordingly, the present invention is directed to an electric seat track assembly that overcomes the disadvantages of the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an electric seat track assembly comprising:

the sliding rail mechanisms are arranged on two sides side by side, each sliding rail mechanism comprises a lower sliding rail assembly with a lower rail and an upper sliding rail assembly with an upper rail arranged in the lower rail in a sliding manner, a plurality of locking holes arranged at intervals along the length direction of the lower rail are arranged on the lower rail, and locking assemblies which are matched with the locking holes and can form locking or unlocking between the upper rail and the lower rail are arranged on the upper rail;

the driving mechanism is arranged between the upper rails on the two sides and comprises a driving motor and driving brake wire assemblies which are synchronously driven by the driving motor and are respectively arranged on the upper rails on the two sides, and each driving brake wire assembly is provided with two driving brake wires which are reversely wound and are respectively connected with the two ends of the lower rail;

the unlocking mechanism is arranged between the upper rails on the two sides and comprises an unlocking motor and two unlocking brake lines which are wound and driven by the unlocking motor synchronously, and the unlocking brake lines are connected with the locking assemblies on the two sides respectively.

Furthermore, the locking assembly is provided with an operating end which is rotatably arranged in the upper rail, a locking end which is slidably arranged in the upper rail corresponding to the locking hole, and a first elastic piece which is arranged between the upper rail and the operating end, and the locking end can slide to form insertion fit with at least one locking hole due to the driving of the first elastic piece so as to lock the space between the upper rail and the lower rail, and the operating end bears the unlocking force of the unlocking brake wire, and the locking end can slide reversely to release the locking.

Further, the locking end is including the locking pinion rack that is equipped with the locking tooth, the manipulation end is located including rotating unblock dwang in the upper rail, and be located unblock dwang one side with the unblock catch bar that unblock dwang pole linked firmly, first elastic component butt in on the unblock catch bar, and in be equipped with on the locking pinion rack and be on a parallel with the first rectangular hole of locking end locking direction, and the quadrature in the second rectangular hole of first rectangular hole, the unblock dwang with the unblock catch bar is worn to locate respectively first rectangular hole with in the second rectangular hole.

Furthermore, a third strip hole parallel to the first strip hole is formed in the locking toothed plate, and the locking assembly is further provided with an unlocking support rod which is arranged in the third strip hole in a penetrating mode and fixed on the upper rail.

Further, the slide rail mechanism further includes:

the bearing assembly is rotatably arranged on the upper rail and is in rolling abutting joint with the lower part of the lower rail so as to form rolling support for the upper rail which slides relative to the lower rail, the bearing assembly is provided with centering inclined planes which are oppositely arranged, the centering inclined planes correspond to the centering inclined planes, and the lower rail is provided with matching inclined planes c which are in abutting joint with the centering inclined planes.

Further, the slide rail mechanism further includes:

the gap eliminating assembly is rotatably arranged on the upper rail in a lever shape, the gap eliminating assembly is provided with a rolling body which is positioned at one end and is in rolling butt joint with the upper part of the lower rail, and a second elastic piece which is positioned at the other end and is in butt joint with the upper rail, gap eliminating inclined planes which are oppositely arranged are arranged on the rolling body, and contact inclined planes i which are in butt joint with the gap eliminating inclined planes are arranged on the lower rail corresponding to the gap eliminating inclined planes.

Furthermore, the upper rail and the lower rail are both aluminum rails, a plurality of reverse buckles are respectively arranged on two sides of the inner portion of the lower rail, and corresponding to the reverse buckles, the upper rail is provided with buckle teeth which are respectively embedded in the corresponding reverse buckles.

Furthermore, drive brake cable subassembly is located including rotating drive brake cable wheel on the upper rail, two drive brake cable wheel is reverse twined on drive brake cable wheel, and the drive brake cable wheel of both sides passes through the synchronizing bar and links to each other, driving motor with the actuating lever transmission is connected.

Furthermore, each end of the lower rail is provided with a brake wire pre-tightening mechanism, the brake wire pre-tightening mechanism is connected with the driving brake wire, the brake wire pre-tightening mechanism comprises a mechanism support arranged on the lower rail, a pre-tightening wheel rotatably arranged on the mechanism support, a pre-tightening assembly and an elastic piece arranged between the ratchet part and the mechanism support, the pre-tightening wheel is provided with a containing part connected with and capable of containing the brake wire, the pre-tightening assembly is provided with a ratchet part which is connected with the pre-tightening wheel and can rotate synchronously, and the ratchet part rotatably arranged on the mechanism support corresponding to the ratchet part, the elastic piece is provided with a pre-tightening force applied on the ratchet part, and the ratchet part is engaged with the ratchet part after receiving the pre-tightening force.

Further, electrodynamic type seat slide rail assembly still include with driving motor with the controller that the unblock motor links to each other, and be fixed in the pencil box of pencil has been acceptd to the lower rail, just in the pencil box the pencil is scalable setting, and can follow the upper rail slides.

Compared with the prior art, the invention has the following advantages:

according to the electric seat slide rail assembly, the driving brake wire driven by the driving motor is adopted to drive the upper rail to slide, so that the cost of the driving mechanism can be reduced, the driving brake wire is used as a flexible material and can be bent and deformed freely, the residual degree of freedom except the driving direction is flexible, and a certain tolerance can be absorbed, so that the smoothness of the slide rail operation and the sound quality can be ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of an electric seat track assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the powered seat track assembly according to the present invention;

fig. 3 is a schematic structural view of a slide rail mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a lower track assembly according to an embodiment of the present invention;

FIG. 5 is an exploded view of the lower track assembly according to one embodiment of the present invention;

FIG. 6 is a cross-sectional view of a lower rail according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an upper track assembly according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an upper track assembly according to an embodiment of the present invention from another perspective;

FIG. 9 is an exploded view of an upper track assembly according to an embodiment of the present invention;

FIG. 10 is a schematic view of the upper rail and the lower rail according to the embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a peeling mechanism according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of a locking assembly according to an embodiment of the present invention;

FIG. 13 is another schematic structural view of a locking assembly according to an embodiment of the present invention;

FIG. 14 is a schematic view of the combination of the unlocking support bar and the unlocking pushing bar with the upper rail according to the embodiment of the present invention;

fig. 15 is a schematic structural view of the unlocking rotating rod in the middle of the locking toothed plate according to the embodiment of the present invention;

FIG. 16 is a schematic structural diagram of a gap elimination assembly according to an embodiment of the present invention;

FIG. 17 is a schematic view of the engagement of the second rolling elements with the lower rail according to the embodiment of the present invention;

FIG. 18 is a schematic structural view of a bearing assembly according to an embodiment of the present invention;

FIG. 19 is a schematic view of a bearing assembly according to an embodiment of the present invention engaged with a lower rail;

FIG. 20 is a schematic view of the anti-backlash assembly and bearing assembly in accordance with an embodiment of the present invention in an operative condition with the lower rail;

FIG. 21 is a schematic structural view of a brake cable holder according to an embodiment of the present invention;

FIG. 22 is a schematic structural diagram of a driving mechanism according to an embodiment of the present invention;

FIG. 23 is a schematic view of a driving brake cable assembly according to an embodiment of the present invention;

FIG. 24 is an exploded view of a drive cable assembly according to an embodiment of the present invention;

FIG. 25 is a schematic view of the connection between the driving brake cable and the driving brake cable wheel according to the embodiment of the present invention;

fig. 26 is a schematic structural diagram of an unlocking mechanism according to an embodiment of the present invention;

fig. 27 is a schematic structural view of a wire harness box according to an embodiment of the present invention;

FIG. 28 is a schematic structural diagram of a brake cable pre-tightening mechanism according to an embodiment of the present invention;

FIG. 29 is an exploded view of a brake cable pretensioning mechanism according to an embodiment of the present invention;

FIG. 30 is a schematic structural view of a mechanism support according to an embodiment of the present invention;

FIG. 31 is a schematic structural diagram of a pre-tightening wheel according to an embodiment of the present invention;

FIG. 32 is a schematic view of a ratchet and ratchet configuration according to an embodiment of the present invention;

FIG. 33 is a schematic structural diagram of a torsion spring according to an embodiment of the present invention;

FIG. 34 is a schematic structural diagram of a cover plate according to an embodiment of the present invention;

FIG. 35 is a schematic view of an installation of a brake cable pre-tightening mechanism according to an embodiment of the present invention;

description of reference numerals:

1. a lower slide rail assembly; 2, sliding rail components are arranged; 3. a drive mechanism; 4. an unlocking mechanism; 5. a controller; 6. A wire harness box; 7. a brake cable pre-tightening mechanism;

101. a lower rail; 102. a locking hole; 103. a soft decorative strip; 104. an end cover; 105. an end trim cover; 106. A connecting member; 107. a positioning member; 101a, a card slot; 101b, a jaw; 101c, a mating bevel; 101d, a limiting groove; 101e, a first reverse buckle; 101f, a second reverse buckle; 101g, a third reverse buckle; 101h, fourth reversing; 101i, contact slope;

201. rail mounting; 202. a peeling mechanism; 203. riveting; 204. a locking toothed plate; 205. an unlocking handle; 206. Unlocking the rotating rod; 207. unlocking the push rod; 208. unlocking the rotating bracket; 209. a first elastic member; 2010. unlocking the support rod; 2011. rotating the rod sleeve; 2012. a gap elimination assembly; 2013. a bearing assembly; 2014. A rotating shaft; 2015. a brake cable support; 2016. mounting screws; 20121. eliminating the gap bracket; 20122. a rolling body; 20123. a second elastic member;

301. a drive motor; 302. driving a brake cable assembly; 303. a drive motor support; 304. a synchronization lever; 305. Driving a brake line; 3021. driving a brake wire wheel; 3022. an inner side cover plate; 3023. an outer cover plate;

401. unlocking the motor; 402. unlocking the motor mounting bracket; 403. unlocking the brake cable;

601. inputting a wire harness; 602. outputting the wire harness;

701. a mechanism support; 702. a ratchet wheel; 703. pre-tightening the wheel; 704. installing a rivet on the pre-tightening wheel; 705. a cover plate; 706. a ratchet; 707. mounting a rivet on the ratchet; 708. a torsion spring; 709. a screw; 7010. riveting;

70101. a first mounting hole; 70102. a second mounting hole; 70103. a third mounting hole; 70104. a fourth mounting hole; 70201. a ratchet wheel mounting hole; 70202. a linkage tooth; 70301. an accommodating groove; 70302. a pre-tightening wheel mounting hole; 70303. a linkage groove; 70304. inserting grooves; 70501. a plug-in part; 70502. an operation hole; 70601. a ratchet mounting hole.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inside", "outside", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present invention relates to an electric seat slide rail assembly, which is generally used for mounting a vehicle seat in a vehicle body and is driven in an electric manner to adjust the seat position, and it should be noted that, as a preferred example, the vehicle of the present embodiment is an MPV vehicle type having a large passenger space, and thus the seat slide rail of the present embodiment is also a long slide rail structure having a long stroke used for two-row and three-row seats in the MPV vehicle type.

The long slide rail structure generally means that the length of a lower slide rail component fixedly connected with a vehicle body is longer, and the maximum length is even more than 1000mm, and at the moment, an upper slide rail component used for being connected with a seat can have a longer stroke when sliding along the lower slide rail component, so that a larger adjustment amount can be obtained.

Further, it is also noted that in the MPV vehicle type, the slide rail mechanism of the present embodiment, which is generally a long slide rail, may be more used for the two-row seat. Moreover, although the MPV will be more used in the long slide rail structure, it is undeniable that the slide rail mechanism of the embodiment can be used in other vehicle models with slide rail moving strokes according to design requirements, and is not limited herein.

In the overall structure, as shown in fig. 1 and fig. 2, the electric seat slide rail assembly of the present embodiment includes two slide rail mechanisms, a driving mechanism 3 and an unlocking mechanism 4, wherein the two slide rail mechanisms are arranged side by side on two sides, each slide rail mechanism includes a lower slide rail assembly 1 having a lower rail 101, and an upper slide rail assembly 2 having an upper rail 201 slidably arranged in the lower rail 101, and a plurality of locking holes 102 arranged at intervals along the length direction of the lower rail 101 are provided on the lower rail 101, and a locking assembly which can be locked or unlocked between the upper rail 201 and the lower rail 101 by being fitted in the locking holes 102 is provided on the upper rail 201.

The driving mechanism 3 is disposed between the upper rails 201 on both sides, and the driving mechanism 3 includes a driving motor 301, and driving brake cable assemblies 302 synchronously driven by the driving motor 301 and disposed on the upper rails 201 on both sides, respectively, and each driving brake cable assembly 302 has two driving brake cables 305 reversely wound and connected to both ends of the lower rail 101, respectively. The unlocking mechanism 4 is also disposed between the upper rails 201 on both sides, and specifically includes an unlocking motor 401 and two unlocking brake wires 403 wound around and synchronously driven by the unlocking motor 401, and each unlocking brake wire 403 is connected to the locking components on both sides.

The slide rail assembly of this embodiment drives the upper rail 201 to slide through the driving brake cable 305 driven by the driving motor 301, so that the cost of the driving mechanism 3 can be reduced, and the driving brake cable 305 is used as a flexible material, so that the slide rail assembly can be bent and deformed freely, and the remaining degree of freedom except the driving direction is flexible, and can absorb a certain tolerance, thereby ensuring the smoothness of the slide rail operation and the sound quality.

Based on the above overall description, first, in combination with the slide rail mechanism shown in fig. 3, the slide rail mechanism of the present embodiment further includes, as a preferred embodiment, a bearing assembly 2013 rotatably disposed on the upper rail 201 and configured to roll and support the upper rail 101 sliding relative to the lower rail 101, and a backlash eliminating assembly 2012 having an backlash eliminating slope and rotatably disposed on the upper rail 201 in a lever shape.

Specifically, the locking hole 102 provided in the lower rail 101 and the locking component provided in the upper rail 201 form a rail locking mechanism for locking or unlocking between the upper rail component 1 and the lower rail component 2, and the detailed structure of each part of the rail locking mechanism will be described one by one below.

As shown in fig. 4 and 5, an exemplary structure of the lower sliding rail assembly 1 of the present embodiment is that the lower rail 101 is long, and as a preferred implementation form, the lower rail 101 and the upper rail 201 of the upper sliding rail assembly 2 are both aluminum rails, that is, the lower rail 101 and the upper rail 201 are both made of aluminum alloy, so that not only the upper rail and the lower rail have better durability compared with the existing steel rail structure, but also the quality of the lower rail 101 and the upper rail 201 can be reduced, which is beneficial to light weight design.

In this embodiment, each locking hole 102 is disposed at a side portion of the lower rail 101, and is substantially arranged from one end of the lower rail 101 to the other end thereof, and at this time, the locking tooth plate 204 in the locking assembly is also in a horizontal direction, that is, slides along the width direction of the lower rail 101, so that the locking teeth thereon can be inserted into the locking holes 102 at corresponding positions to form a plug-in fit, or can be pulled out of the locking holes 102. However, besides locating the locking hole 102 at the side of the lower rail 101, it is of course possible to locate the locking hole 102 at the bottom or top of the lower rail 101, but corresponding to the different positions of the locking hole 102, the locking assembly in the upper rail 201 also needs to be adjusted accordingly in terms of structural arrangement to enable proper locking or unlocking.

In order to improve the appearance quality of the lower rail assembly 1 and to protect the angles of the components inside the lower rail assembly, the soft decoration strips 103 are also arranged side by side on the top of the lower rail 101 in this embodiment, and the upper rail 201 in the upper rail assembly 2 slides between the two soft decoration strips 103. In addition, end decorative covers 105 arranged corresponding to the ends of the soft decorative strips 103 and end covers 104 sealed to the ends of the lower rail 101 are respectively arranged at the two ends of the lower rail 101, and the end covers 104 and the end decorative covers 105 can be made of plastic and can be fixed to the ends of the lower rail 101 in a clamping or screwing manner.

In order to mount and fix the lower rail assembly 1, the lower rail 101 of this embodiment is also provided with a connecting member 106 connected to the bearing base of the loading rail mechanism, and a positioning member 107 capable of positioning the connection of the connecting member 106. The above-mentioned load-bearing base is also generally referred to as a vehicle body, and when the seat of the present embodiment is used in other applications, it is understood that the load-bearing base is correspondingly other components for mounting the seat. In addition, as an exemplary structure, the connecting member 106 may be a bolt with a gasket, the positioning member 107 may be a positioning pin, and the connecting member 106 and the positioning member 107 may be respectively provided in a plurality as needed.

In this embodiment, the cross-sectional structure of the lower rail 101 is as shown in fig. 6, the lower rail 101 with the cross-section can be generally formed by an extrusion process, and in terms of specific structural design, first, a clamping groove 101a and a clamping claw 101b are symmetrically arranged on two opposite sides of the top of the lower rail 101, the clamping groove 101a and the clamping claw 101b are installation structures of the soft decoration strip 103, and the soft decoration strip 103 is directly clamped on the lower rail 101 through the clamping groove 101a and the clamping claw 101 b.

Also provided at the lower portion in the lower rail 101 are engagement inclined surfaces 101c symmetrically arranged on both sides, which are engaged with bearing assemblies 2013 described below, in particular. A limiting groove 101d is formed below each matching inclined surface 101c, the limiting grooves 101d on both sides are symmetrically and oppositely arranged, and the limiting grooves 101d on both sides together can enclose a space for placing the gasket in the connecting piece 106. At this time, the spacers in the connecting member 106 are respectively retained by the retaining grooves 101d on both sides, so that the connecting member 106 can be prevented from falling.

In addition to the lower limiting groove 101d, a first reverse buckle 101e, a second reverse buckle 101f, a third reverse buckle 101g and a fourth reverse buckle 101h are further disposed on the two opposite side walls in the lower rail 1, each reverse buckle on each side constitutes a reinforcing structure for improving the peeling strength between the upper rail and the lower rail, and corresponding to each reverse buckle, the upper rail 201 of the present embodiment is also provided with buckle teeth respectively embedded in the corresponding reverse buckles. At this time, the engagement state of the teeth on the upper rail 201 and the reverse hooks on the lower rail 101 can be as shown in fig. 10 described below. Besides, the structure of the back-off and the tooth-buckle shown in fig. 6 and 10 can be adopted, but other similar structures can be adopted in the present embodiment to increase the peel strength between the upper rail 201 and the lower rail 101.

In the present embodiment, generally opposite to the above-mentioned engaging inclined surface 101c, the upper portion of the upper rail 201 is also provided with a contact inclined surface 101i which is also symmetrically arranged on both sides, and the contact inclined surface 101i is used for engaging with the rolling body 20122 in the backlash eliminating assembly 2012 described below.

Fig. 7 to 9 show an exemplary structure of the upper rail assembly 2 of the present embodiment, wherein the upper rail 201 is also a long bar, but the length thereof is much shorter than that of the lower rail 101, the upper rail 201 is preferably an aluminum rail as described above, i.e., made of aluminum alloy, and it can be generally formed by an extrusion process, and further machined for final shaping after the extrusion process.

The cross section of most part of the upper rail 201 of this embodiment is as shown in fig. 9, but the part where the anti-backlash component 2012, the bearing component 2013 and the locking component are arranged is different. As can be seen from fig. 10, as described above, the upper rail 201 is inserted into each reverse buckle in the lower rail 101 via the buckle teeth formed on both sides thereof, so that the upper rail 201 is advantageously prevented from being peeled off from the lower rail 101 while achieving sliding guidance therebetween.

The upper rail 201 is fixedly connected with two stripping mechanisms 202 shown in fig. 11, which are respectively arranged at two ends of the upper rail 201, each stripping mechanism 202 is fixedly connected to the upper rail 201 through a rivet 203, and a welding nut for connecting a seat is fixedly arranged in each stripping mechanism 202. In particular, the release mechanism 202 may be implemented by referring directly to the related components of the existing slide track structure of the car seat.

The present embodiment is directed to the locking assembly of the sliding rail locking mechanism, which is designed to have an operating end rotatably disposed in the upper rail 201, a locking end slidably disposed in the upper rail 201 corresponding to the locking hole 102, and a first elastic member 209 disposed at the upper rail 201 and the operating end. At this time, the locking end is also slidable by the urging of the first elastic member 209 to engage with at least one of the locking holes 102 to lock the upper rail 201 and the lower rail 101, and the locking end is also slidable in the opposite direction to release the locking by receiving an external operating force through the operating end.

In detail, fig. 12 to 14 show an exemplary structure of the locking assembly of the present embodiment, and the exemplary structure is specifically configured to match with the locking hole 102 at the side of the lower rail 101. Referring first to fig. 12 and 13, the locking end of the present embodiment includes a toothed locking plate 204 provided with locking teeth, the manipulating end includes an unlocking rotation rod 206 rotatably disposed in the upper rail 201, and an unlocking push rod 207 fixedly connected to the unlocking rotation rod 206 and located at one side of the unlocking rotation rod 206, and the first elastic member 209 abuts on the unlocking push rod 207.

The locking teeth are specifically configured in multiple numbers at one end of the locking tooth plate 204, and as a preferred implementation form, the width of one of the multiple locking teeth may be set to match the width of the locking hole, and gap eliminating teeth that can respectively contact with two side walls in the width direction of the locking hole are configured, and meanwhile, the widths of the other locking teeth may be uniformly set to be smaller than the gap eliminating teeth. In this way, by providing the backlash elimination teeth, the clearance in the X direction, that is, in the longitudinal direction of the lower rail 101 can be eliminated well during locking, and the stability of the locked upper rail 201 and the seat connected to the upper rail 201 can be improved.

In each locking tooth, the backlash eliminating tooth is generally a main tooth, and it may be one of the locking teeth located in the middle, or it may be a locking tooth at another position, and it may be selected according to actual requirements in specific design.

In addition, the unlocking rotating rod 206 and the unlocking pushing rod 207 of the present embodiment are specifically fixedly connected through the unlocking rotating bracket 208, and the unlocking rotating bracket 208 is located at the back of the locking toothed plate 204 and is respectively connected with the end portions of the unlocking rotating rod 206 and the unlocking pushing rod 207. The locking toothed plate 204 is further provided with a first elongated hole parallel to the locking direction of the locking end and a second elongated hole orthogonal to the first elongated hole, and the unlocking rotating rod 206 and the unlocking pushing rod 207 are respectively inserted into the first elongated hole and the second elongated hole as shown in fig. 12.

By positioning the unlocking rotating rod 206 in the first elongated hole and positioning the unlocking pushing rod 207 in the second elongated hole, the unlocking rotating rod 206 can be rotated by receiving an external force at the manipulating end by utilizing the direction arrangement of the two elongated holes, and specifically, when performing counterclockwise rotation based on the reference shown in fig. 12, the unlocking pushing rod 207 can be driven by the unlocking rotating rod 206 to rotate counterclockwise synchronously by the transmission of the unlocking rotating bracket 208. And then, the first strip hole and the second strip hole are respectively used for providing space for the movement of the unlocking rotating rod 206 and the unlocking pushing rod 207 relative to the locking toothed plate 204, so that the locking toothed plate 204 can be moved in a sliding manner, and the unlocking operation can be performed.

In order to reduce friction and eliminate noise, in this embodiment, a rotating rod sleeve 2011 is also sleeved outside the unlocking rotating rod 206, the rotating rod sleeve 2011 may be made of plastic, and the top of the rotating rod sleeve 2011 is still provided with two wall plates arranged side by side as shown in fig. 12 or fig. 13, and the rotating rod sleeve 2011, namely, as shown in fig. 7 and fig. 8, is clamped on the upper rail 201 by the wall plates at both sides, so as to prevent the rotating rod sleeve 2011 from rotating along with the unlocking rotating rod 206.

In this embodiment, by the arrangement of the first elongated hole and the second elongated hole which are just orthogonal, when the unlocking rotation rod 206 rotates, the locking toothed plate 204 can slide to form an unlocking stroke, and certainly in the unlocking process, the first elastic member 209 is in an energy storage state. Besides unlocking, when the external force for unlocking is removed at the operating end, under the action of the energy released by the first elastic element 209, the locking toothed plate 204 can also be translationally and slidably reset by utilizing the constraint of the two elongated holes, and then is inserted into the corresponding locking hole 102 to restore locking.

As a preferred embodiment, the first elastic member 209 of the present embodiment is a torsion spring sleeved on the unlocking rotating rod 206, and two ends of the torsion spring respectively abut against the unlocking pushing rod 207 and the upper rail 201. In addition, the other end of the unlocking rotating rod 206 is also fixedly connected with an unlocking handle 205, and meanwhile, a brake cable connecting hole is also formed in the unlocking handle 205, so that the operating end is driven by the unlocking brake cable 403 to apply the unlocking external force.

Through the wear-out of unblock dwang 206 in first rectangular downthehole to and the wear-out of unblock catch bar 207 in the rectangular downthehole of second establishes, this embodiment can realize promptly by external force drive or when being driven by first elastic component 209, the translation of locking pinion rack 204 slides. However, if only the unlocking rotating rod 206 and the unlocking pushing rod 207 are provided, the problem that the locking toothed plate 204 is easy to incline due to unilateral suspension inevitably exists, and the motion stability of the locking toothed plate is affected. At this time, as a further improvement, a third elongated hole parallel to the first elongated hole may be disposed on the locking tooth plate 204, and an unlocking support rod 2010 penetrating the third elongated hole is further disposed in the locking assembly, and the unlocking support rod 2010 is fixed on the upper rail 201.

The third elongated hole and the unlocking support rod 2010 are also shown in fig. 12 and 13, and in specific implementation, the unlocking support rod 2010 may be made of a plastic material or a metal composite material, so as to reduce friction and noise. Meanwhile, one end of the unlocking support rod 2010 can be clamped on the upper rail 201 as shown in fig. 14, and a circular baffle plate arranged on one side of the locking toothed plate 204 can be arranged at the other end of the unlocking support rod 2010 so as to support the locking toothed plate 204.

It should be noted that in the present embodiment, although the unlocking rotation rod 206 is located at one end of the locking toothed plate 204 in fig. 12 and 13, the unlocking push rod 207 is located at the middle of the locking toothed plate 204. However, as shown in fig. 15, in the specific implementation, it is of course possible that the unlocking rotation rod 206 is displaced to the middle of the locking toothed plate 204, and the unlocking push rod 207 is located at the end of the locking toothed plate 204.

Also, since the unlocking rotation rod 206 itself can support the locking tooth plate 204 at this time, when the unlocking rotation rod 206 is located at the middle portion, the unlocking support rod 2010 may be omitted as shown in fig. 13. However, although the unlocking support lever 2010 may be omitted, it is still possible to provide the unlocking support lever 2010 on the other side of the unlocking rotation lever 206 with respect to the unlocking push lever 207 when the unlocking rotation lever 206 is located at the middle portion.

As shown in fig. 16, the backlash eliminating assembly 12 of the present embodiment is a pair of backlash eliminating assemblies 12, each of which is arranged close to two ends of the upper rail 201 at an interval, and each of the backlash eliminating assemblies 12 is rotatably arranged on the upper rail 201 in a lever shape, and structurally includes a backlash eliminating bracket 20121, a rolling body 20122 at one end of the backlash eliminating bracket 20121 and in rolling contact with a contact inclined surface 101i on an upper portion of the lower rail 101, and a second elastic member 20123 at the other end and in contact with the upper rail 201.

In this embodiment, the rolling elements 20122 are in rolling contact with the contact inclined surfaces 101i on the upper portion of the lower rail 101 in a one-to-one correspondence manner through a pair of anti-backlash inclined surfaces arranged oppositely thereon, and as shown in fig. 17, the pair of anti-backlash inclined surfaces on the rolling elements 20122 are arranged in a shape of "eight", and the contact inclined surfaces 101i on the two sides of the lower rail 101 are also arranged in a shape of "eight". At this time, the gap between the Y-direction and the Z-direction, that is, the gap between the lower rail 101 in the width direction and the height direction can be eliminated by the rolling contact between the gap eliminating inclined surface and the contact inclined surface 101 i.

In the arrangement of the anti-backlash assembly 2012, it is generally sufficient to rotate the anti-backlash bracket 20121 on the upper rail 201 through the rotating shaft 2014. When the backlash eliminating bracket 20121 is arranged in a rotating mode, the rotating shaft 2014 for rotatably mounting the backlash eliminating assembly 12 is arranged close to one end of the rolling body 20122, after the rotating mode is arranged, the second elastic member 20123 provides elastic force for the whole backlash eliminating assembly 2012, and the force value of the elastic force provided by the second elastic member 20123 can be amplified by adopting a lever mode and the position arrangement of the rotating shaft 2014. Meanwhile, the second elastic member 20123 may be, for example, a rubber block fixedly disposed at the other end of the gap eliminating bracket 20121. Alternatively, instead of the rubber block, it is also possible to adopt a structure such as a leaf spring, a gas spring, or the like.

Fig. 18 shows a structure of a bearing assembly 2013 of the present embodiment, which is also a pair arranged on the upper rail 201 at intervals and is also rotatably disposed by using a rotating shaft 2014. As shown in fig. 19, the bearing unit 2013 of the present embodiment is specifically in rolling contact with the lower portion of the lower rail 101 so as to be able to constitute a rolling support for the upper rail 201 that slides relative to the lower rail 101. Furthermore, as a preferred embodiment, the bearing assembly 2013 is also provided with a pair of centering inclined surfaces which are oppositely arranged, and the centering inclined surfaces are abutted with the matching inclined surfaces 101c on the lower rail 101, and both the centering inclined surfaces are also inverted-splayed, so that rolling support can be provided, a centering effect can be achieved, and the smoothness of the sliding of the upper rail 201 relative to the lower rail 101 can be ensured.

The bearing assembly 2013 is usually made of a plastic bearing structure, and the working state of the bearing assembly 2013 and the anti-backlash assembly 2012 of the present embodiment can be as shown in fig. 20. At this time, the second elastic member 20123 of the backlash eliminating assembly 2012 abuts against the inner wall of the upper rail 201, and the rolling body 20122 abuts against the lower rail 101, and abuts against the lower rail 101 by the elastic force generated by the second elastic member 20123. The bearing assembly 2013 rolls on the lower rail 101.

In addition, the brake cable supports 2015 are respectively arranged at the two ends of the upper rail 201, and the brake cable supports 2015 can be used as stopping points of the upper rail and are also used for fixing the driving brake cable 305, so as to facilitate the arrangement of the driving brake cable 305 on the upper rail 201. The brake cable holder 2015 may be configured as shown in fig. 21, and the brake cable holders 2015 at the respective ends may be fixed to the upper rail 201 via mounting screws 2016.

In this embodiment, the overall structure of the driving mechanism 3 can be as shown in fig. 22, and further combined with fig. 23 to 25, the driving motor 301 can be fixed between the upper rails 201 on both sides by the driving motor bracket 303, and the driving brake wire assembly 302 specifically includes a driving brake wire wheel 3021 rotatably disposed on the upper rail 201 by the inner cover plate 3022 and the outer cover plate 3023 on both sides, two driving brake wires 305 are reversely wound on the driving brake wire wheel 3021, and the connection between the two driving brake wires 305 and the driving brake wire wheel 3021 can be specifically as shown in the dotted line in fig. 25. The driving brake line wheels 3021 on both sides of the present embodiment are also connected through the synchronization rod 304, and the driving motor 301 is in transmission connection with the driving rod 304 to realize synchronous driving of the driving brake line assemblies 302 on both sides.

The structure of the unlocking mechanism 4 of the present embodiment is as shown in fig. 26, wherein the unlocking motor 401 is specifically fixed between the upper rails 201 on both sides via the unlocking motor mounting bracket 402, and the two unlocking brake wires 403 driven by the unlocking motor 401 can be arranged in the same structure as the driving brake wire wheel 3021 and are in transmission connection with the unlocking motor 401, however, the difference is that the two unlocking brake wires 403 should be wound in the same direction to have the same unlocking action. After the unlocking mechanism 4 is arranged in the slide rail mechanism, each unlocking brake cable 403 is connected with the brake cable connecting hole on the unlocking handle 205 on the locking component on the corresponding side.

As a preferred embodiment, the electric seat slide assembly of the present embodiment may further include a controller 5 connected to the driving motor 301 and the unlocking motor 401, and a wire harness box 6 fixed to the lower rail 101 and accommodating the wire harness. The controller 5 is configured to receive an external control signal to control the actions of the driving motor 301 and the unlocking motor 401, so as to achieve automatic adjustment of the seat track.

The wire harness in the wire harness box 6 of the present embodiment is telescopically arranged so as to be able to slide with the upper rail 201, and the wire harness is telescopically arranged in the wire harness box 6, and a guide chain as in fig. 27 may be adopted, or other existing structure for movably arranging the wire harness may also be adopted. In addition, in the implementation, the harness box 6 may be connected to the entire vehicle power supply circuit through the input harness 601, and the movable output harness 602 may be connected to the controller 5, the driving motor 301, the unlocking motor 401, and the like.

In addition, in the present embodiment, in order to prevent the driving brake wire 302 from being loosened and affecting its usability when the driving brake wire 305 is used to drive the upper rail 201, a brake wire biasing mechanism 7 capable of biasing the driving brake wire 305 is provided at each end of the lower rail 101 as shown in fig. 22. In terms of overall structure, the brake cable pre-tightening mechanism 7 of the present embodiment includes a mechanism bracket 701, a pre-tightening wheel 703, a pre-tightening assembly and an elastic member.

The mechanism holder 701 serves as a support base for the entire mechanism, the pretensioned wheel 703 is rotatably provided on the mechanism holder 701, and a housing portion for connecting and housing the drive brake cable 305 is also formed in the pretensioned wheel 703. The pre-tightening assembly has a ratchet part connected with the pre-tightening wheel 703 and capable of synchronously rotating, and a ratchet part rotatably disposed on the mechanism bracket 701 corresponding to the ratchet part. The elastic member is disposed between the ratchet portion and the mechanism holder 701, and has a pre-tightening force applied to the ratchet portion, and the ratchet portion can engage with the ratchet portion due to the pre-tightening force.

In detail, as shown in fig. 28 and 29 and further shown in fig. 30, the mechanism bracket 701 of the present embodiment is a sheet metal member, and a first mounting hole 70101, a second mounting hole 70102, a third mounting hole 70103 and a fourth mounting hole 70104 are respectively formed on the sheet metal member. The first mounting hole 70101 is used for mounting the pre-tightening wheel 703 and the ratchet portion, the second mounting hole 70102 is used for mounting the ratchet portion, the third mounting hole 70103 is used for mounting the elastic member, and the fourth mounting hole 70104 is used for cooperating with the rivet 7010 to mount the mechanism on the lower rail 101.

In this embodiment, as shown in fig. 31, as a possible implementation manner, the accommodating portion configured on the pre-tightening wheel 703 specifically includes an accommodating groove 70301 formed on the pre-tightening wheel 703 around the circumferential direction of the pre-tightening wheel 703, and a connecting portion configured on the pre-tightening wheel 703 and connected to the end portion of the driving brake cable 305. The connecting portion can be, for example, a connecting groove provided on the pre-tightening wheel 703 and communicating with the accommodating groove 70301, and the end portion of the driving brake cable 305, i.e., the head portion 200 at one end of the driving brake cable 305, can be engaged with the connecting groove as shown in fig. 31, so as to achieve the connection between the brake cable and the pre-tightening wheel 703.

After the head 200 is connected with the pre-tightening wheel 703 in a clamping manner, the other part of the driving brake cable 305 can be wound in the accommodating groove 70301, and the winding amount of the driving brake cable 305 in the accommodating groove 70301 is increased along with the rotation of the pre-tightening wheel 703, so that the driving brake cable 305 can be tightened.

In addition to the receiving groove 70301 and the corresponding connecting groove, the present embodiment also has a through-shaped pretensioning wheel mounting hole 70302 in the middle of the pretensioning wheel 703, which pretensioning wheel mounting hole 70302 is used for mounting the pretensioning wheel 703 on the mechanism bracket 701, and as a possible implementation form, the pretensioning wheel 703 is also specifically mounted on the mechanism bracket 701 at the first mounting hole 70101 via the pretensioning wheel mounting rivet 704.

In a preferred embodiment, the ratchet portion is a ratchet wheel 702 coaxially disposed with the pre-tightening wheel 703, a linkage structure for synchronous rotation between the ratchet wheel 702 and the pre-tightening wheel 703 is also disposed between the ratchet wheel 702 and the pre-tightening wheel 703, and the ratchet portion is a ratchet 706 rotatably disposed on the mechanism bracket 701.

At this time, as shown in fig. 31 in combination with fig. 32, the ratchet wheel 702 is also provided with a ratchet wheel mounting hole 70201 at the middle part, and the pretension wheel mounting rivet 704 is also passed through the ratchet wheel mounting hole 70201, so as to realize the coaxial arrangement between the ratchet wheel 702 and the pretension wheel 703. Meanwhile, as a possible implementation form, the above linkage structure specifically includes a linkage groove 70303 opened on the pre-tightening wheel 703, and a linkage tooth 70202 formed on the ratchet wheel 702 and engaged in the linkage groove 70303.

When the ratchet wheel 702 and the pre-tightening wheel 703 are mounted on the mechanism bracket 701 together through the pre-tightening wheel mounting rivet 704, the linkage teeth 70202 can be clamped in the linkage grooves 70303, so that the synchronous motion between the pre-tightening wheel 703 and the ratchet wheel 702 can be realized through the abutting between the inner wall of the linkage groove 70303 and the linkage teeth 70202.

It should be noted that, instead of using the ratchet wheel 702 provided separately, in this embodiment, the ratchet wheel portion may be directly formed on the preload wheel 703, that is, a ring of teeth may be formed on the outer circumferential surface of the preload wheel 703, so as to form a wheel structure equivalent to the ratchet wheel 702.

In the present embodiment, the ratchet 706 is provided with a ratchet mounting hole 70601, and the ratchet 706 can be mounted to the second mounting hole 70102 by a ratchet mounting rivet 707 passing through the ratchet mounting hole 70601, and when the ratchet mounting rivet 707 is riveted to the mechanism bracket 701, the ratchet 706 can also rotate freely. Also as a preferred embodiment, the elastic member of the present embodiment specifically includes a spring disposed between the ratchet 706 and the mechanism bracket 701, both ends of the spring are respectively connected with the ratchet 706 and the mechanism bracket 701, and the spring can be, for example, a torsion spring 708 mounted at the third mounting hole 70103 by a screw 709 as shown in fig. 33.

In addition, in order to facilitate the operation of the mechanism for pre-tightening during use, the pre-tightening wheel 703 is provided with an operation portion capable of receiving external operation, and the operation portion is operated by an external tool to rotate the pre-tightening wheel 703 and the ratchet wheel 702, so as to tighten the driving brake wire 305.

The manipulating part may include, for example, a manipulating hole 70502 disposed on the pre-tightening wheel 703, and the manipulating hole 70502 is at least opened at the top of the pre-tightening wheel 703 so that an external tool can be inserted to rotate the pre-tightening wheel 703 by the external tool. As a preferred embodiment, the control hole 70502 is adopted, and in this embodiment, a cover 705 is fastened to the top of the pretensioning wheel 703, and as shown in fig. 34, the control hole 70502 is disposed on the cover 705, and at the same time, the control hole 70502 is also generally in the shape of a regular quadrangle or a regular hexagon.

Through the setting of the cover plate 705, not only can the setting of the handling hole 70502 be facilitated, but also the appearance of the whole mechanism can be improved to a certain extent by covering the pre-tightening wheel mounting hole 70302 on the pre-tightening wheel 703 with the cover plate 705. Since the manipulating hole 70502 is located on the cover plate 705, in order to allow the cover plate 705 to drive the tightening wheel 703 to rotate when an external tool is manipulated, the embodiment is also specifically configured such that the cover plate 705 is connected to the tightening wheel 703 through a plurality of inserting portions 70501 formed on the cover plate 705. Therefore, the inserting part 70501 forms a force transmission structure to ensure the rotation driving of the pre-tightening wheel 703 and the ratchet wheel 702.

Referring to fig. 34 again, the upper plugging portion 70501 may be a plugging column structure protruding out of the cover plate 705 and corresponding to each plugging portion 70501, and as shown in fig. 31, a plugging groove 70304 may be disposed on the top of the pre-tightening wheel 703, and each plugging portion 70501 is plugged into a corresponding plugging groove 70304, so that the cover plate 705 and the pre-tightening wheel 703 can be reliably connected in a key connection manner.

However, instead of the above-mentioned connection form of the insertion part 70501 and the insertion groove 70304, other conventional connection structures may be used to fix the cover 705 to the pre-tightening wheel 703 in this embodiment. In addition, in the specific preparation, it should be noted that the pretightening force 3 of this embodiment may be preferably made of plastic, while other components may be made of conventional aluminum alloy or steel, and the material, shape, etc. of each component may be replaced according to the specific application state without limitation.

The brake cable pre-tightening mechanism of the present embodiment may be installed as shown in fig. 35, and after the entire mechanism is placed in a designed position in the lower rail 101, the mechanism bracket 701 may be fixed by a rivet 7010. Also, to secure the mounting fixation, the rivets 7010 may be provided in two at the side and bottom, respectively, or they may be arranged in other numbers according to the actual design requirements.

When the brake cable pre-tightening mechanism 7 is used, after the brake cable 305 is completely laid, an external tool such as an allen wrench may be used to screw the cover plate 705, and the cover plate 705 drives the pre-tightening wheel 703 and the ratchet 702 to rotate, so that the brake cable 305 is tightened in the accommodating groove 70301, and the engagement portion between the ratchet 706 and the ratchet 702 changes correspondingly with the rotation of the ratchet 702. When the driving brake cable 305 is tightened to a suitable degree, the ratchet 706 is engaged with the ratchet 702 to prevent the driving brake cable 305 from being loosened, thereby pre-tightening the driving brake cable 305.

Thus, by accommodating the pre-tightening wheel 703 in the driving brake wire 305 and by pre-tightening the pre-tightening wheel 703 in one direction by the pre-tightening assembly comprising the ratchet wheel 702 and the ratchet 706, the driving brake wire 305 can be pre-tightened, thereby preventing the driving brake wire 305 from being loosened, and further eliminating problems such as regulation hysteresis and vibration noise caused by the loosening of the driving brake wire 305.

When the electrodynamic type seat slide rail assembly of this embodiment is used, when the seat position needs to be adjusted, through exerting external force, controller 5 makes unblock motor 401 move, and unblock motor 401 is through unblock floodgate line 403, unblock handle 205, unblock dwang 206 and unblock catch bar 207, finally makes locking toothed plate 204 driven translation slip to the compression constitutes the torsional spring of first elastic component 209, and the locking tooth is deviate from in the locking hole 102 of current male, alright remove the locking between the upper and lower rail. The upper rail 201 and the seat can be driven by the driving motor 301 to move along the lower rail 101 through the driving brake cable 305 for position adjustment.

When the seat moves to the right position, the unlocking motor 401 rotates reversely, and under the energy releasing and resetting action of the first elastic piece 209, the locking toothed plate 204 is driven to slide and reset by the unlocking push rod 207. At this time, the locking teeth of the locking tooth plate 204 can be inserted into the corresponding locking holes 102 again to restore the locking state, thereby adjusting the seat position.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an electrodynamic type seat slide rail assembly which characterized in that includes:

the sliding rail mechanisms are arranged on two sides side by side, each sliding rail mechanism comprises a lower sliding rail assembly (1) with a lower rail (101) and an upper sliding rail assembly (2) with an upper rail (201) arranged in the lower rail (101) in a sliding mode, a plurality of locking holes (102) arranged along the length direction of the lower rail (101) at intervals are formed in the lower rail (101), and locking assemblies which are matched with the locking holes (102) and can form locking or unlocking between the upper rail (201) and the lower rail (101) are arranged on the upper rail (201);

the driving mechanism (3) is arranged between the upper rails (201) on two sides, the driving mechanism (3) comprises a driving motor (301) and driving brake cable assemblies (302) which are synchronously driven by the driving motor (301) and are respectively arranged on the upper rails (201) on two sides, and each driving brake cable assembly (302) is provided with two driving brake cables (305) which are reversely wound and are respectively connected with two ends of the lower rail (101);

unlocking mechanism (4), both sides are located in unlocking mechanism (4) between last rail (201), unlocking mechanism (4) are including unblock motor (401) to and the winding sets up and by two unblock floodgate lines (403) that unblock motor (401) synchronous drive, and each unblock floodgate line (403) respectively with both sides the locking subassembly links to each other.

2. The electric seat track assembly of claim 1, wherein: the locking assembly is provided with an operating end which is rotatably arranged in the upper rail (201), a locking end which is slidably arranged in the upper rail (201) corresponding to the locking hole (102), and a first elastic piece (209) arranged between the upper rail (201) and the operating end, wherein the locking end can slide to form insertion fit with at least one locking hole (102) under the driving of the first elastic piece (209) so as to lock the upper rail (201) and the lower rail (101), the operating end bears the unlocking force of the unlocking brake wire (403), and the locking end can slide reversely to release the locking.

3. The electric seat track assembly of claim 2, wherein: the locking end is including locking pinion rack (204) that is equipped with the locking tooth, the manipulation end is located including rotating unblock dwang (206) in upper rail (201), and be located unblock dwang (206) one side with unblock catch bar (207) that unblock dwang (206) linked firmly, first elastic component (209) butt in unblock catch bar (207) are last, and in be equipped with on locking pinion rack (204) and be on a parallel with the first rectangular hole of locking end locking direction, and the quadrature in the second rectangular hole of first rectangular hole, unblock dwang (206) with unblock catch bar (207) wear to locate respectively in first rectangular hole with in the second rectangular hole.

4. The electric seat track assembly of claim 3, wherein: and a third strip hole parallel to the first strip hole is formed in the locking toothed plate (204), and the locking assembly is further provided with an unlocking support rod (2010) which is arranged in the third strip hole in a penetrating manner and fixed on the upper rail (201).

5. The electric seat track assembly of claim 1, wherein: the slide rail mechanism (100) further includes:

the bearing assembly (2013) is rotatably arranged on the upper rail (201), the bearing assembly (2013) is in rolling abutting joint with the lower portion of the lower rail (101) to form rolling support for the upper rail (201) sliding relative to the lower rail (101), centering inclined planes which are oppositely arranged are arranged on the bearing assembly (2013) and correspond to the centering inclined planes, and matching inclined planes (101c) abutting against the centering inclined planes are arranged on the lower rail (101).

6. The electric seat track assembly of claim 1, wherein: the slide rail mechanism (100) further includes:

the backlash eliminating assembly (2012) is rotatably arranged on the upper rail (201) in a lever shape, the backlash eliminating assembly (2012) is provided with a rolling body (20122) which is positioned at one end and is in rolling contact with the upper part of the lower rail (101), and a second elastic piece (20123) which is positioned at the other end and is in contact with the upper rail (201), the rolling body (20122) is provided with backlash eliminating inclined planes which are oppositely arranged, the backlash eliminating inclined planes correspond to the backlash eliminating inclined planes, and the lower rail (101) is provided with contact inclined planes (101i) which are in contact with the backlash eliminating inclined planes.

7. The electric seat track assembly of claim 1, wherein: the upper rail (201) and the lower rail (101) are both aluminum rails, a plurality of reverse buckles are respectively arranged on two sides of the interior of the lower rail (101), the reverse buckles correspond to the reverse buckles, and buckle teeth which are respectively embedded in the corresponding reverse buckles are arranged on the upper rail (201).

8. The electric seat track assembly of claim 1, wherein: drive brake cable subassembly (302) are including rotating to be located drive brake cable wheel (3021) on upper rail (201), two drive brake cable wheel (305) reverse twine on drive brake cable wheel (3021), and drive brake cable wheel (3021) of both sides link to each other through synchronizing bar (304), driving motor (301) with drive lever (304) transmission is connected.

9. The electric seat track assembly of claim 1, wherein: each end of the lower rail (101) is provided with a brake cable pre-tightening mechanism (7), the brake cable pre-tightening mechanism (7) is connected with the driving brake cable, and the brake cable pre-tightening mechanism (7) comprises a mechanism bracket (1) arranged on the lower rail (101) and a pre-tightening wheel (3) rotatably arranged on the mechanism bracket (1), and a pretension component and an elastic element arranged between the ratchet part and the mechanism bracket (1), and the pre-tightening wheel (3) is provided with a containing part which can be connected with and can contain a brake cable (100), the pre-tightening component is provided with a ratchet wheel part which is connected with the pre-tightening wheel and can synchronously rotate, and a ratchet part which is arranged on the mechanism bracket (1) and rotates corresponding to the ratchet part, the elastic piece is provided with pretightening force applied to the ratchet part, and the ratchet part bears the pretightening force and is meshed with the ratchet part.

10. The electric seat track assembly of any of claims 1 to 9, wherein: electrodynamic type seat slide rail assembly still include with driving motor (301) with controller (5) that unblock motor (401) link to each other, and be fixed in pencil box (6) that the pencil was acceptd to lower rail (101), just in pencil box (6) the pencil is scalable setting, and can follow go up rail (201) and slide.