CN210821920U

CN210821920U - Electric sliding rail

Info

Publication number: CN210821920U
Application number: CN201921860449.XU
Authority: CN
Inventors: 黄兴; 祁百魁; 王谦; 徐仁磊; 冯如意
Original assignee: Hubei Hangjia Magna Seating System Co Ltd
Current assignee: Hubei Hangjia Magna Seating System Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-23
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses an electric slide rail, which comprises a first driving part and two slide rails arranged in parallel, wherein the slide rails comprise an inner rail and an outer rail, and the inner rail can slide relative to the outer rail; the first driving part is arranged on the first cross beam; a rack extending along the length direction of the outer rail is fixedly arranged on the outer rail, a gear driving part is fixedly arranged on the inner rail, and the gear driving part is in transmission connection with the rack; two output ends of the first driving component are respectively in transmission connection with the two gear driving parts so as to drive the two gear driving parts to synchronously act. The sliding rails on the two sides of the electric sliding rail are driven by a driving mechanism to synchronously act, and the relative sliding between the inner rail and the outer rail is realized through gear and rack meshing transmission, so that the electric sliding rail is stable and reliable, and the occupied space is small.

Description

Electric sliding rail

Technical Field

The utility model relates to a seat slide technical field especially relates to an electric slide rail.

Background

The car seat passes through the slide rail and realizes the slip of seat relative automobile body, and most seat slide rails are manual formula, and the front and back slip of seat is realized with strength through people self around promptly, to the longer slide rail of length (say and be greater than 350mm), if still adopt manual formula slip, all be not good in the aspect of maneuverability and travelling comfort, therefore electronic slide rail takes place in due course.

However, the existing electric slide rail drives the slide rails on the two sides to slide through two independent driving mechanisms respectively, so that the complexity of the structure of the electric slide rail is increased, the synchronism of the actions of the slide rails on the two sides cannot be ensured, and the safety factor is low.

In view of this, it is desirable to optimize the design of the conventional electric slide rail to simplify the structure while synchronously driving the slide rails on both sides.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic slide rail, this electronic slide rail's both sides slide rail is by a actuating mechanism drive synchronization action, and the relative slip between interior rail and the outer rail is realized through rack and pinion meshing transmission, and is reliable and stable, and occupation space is little.

In order to solve the technical problem, the utility model provides an electric slide rail, which comprises a first driving part and two slide rails arranged in parallel, wherein the slide rail comprises an inner rail and an outer rail, and the inner rail can slide relative to the outer rail; the first driving part is arranged on the first cross beam;

a rack extending along the length direction of the outer rail is fixedly arranged on the outer rail, a gear driving part is fixedly arranged on the inner rail, and the gear driving part is in transmission connection with the rack;

two output ends of the first driving component are respectively in transmission connection with the two gear driving parts so as to drive the two gear driving parts to synchronously act.

The utility model provides an electric slide rail is provided with first crossbeam between the inner rail of both sides, install first drive unit on first crossbeam, two output of first drive unit are connected with the gear drive portion transmission of both sides respectively, drive two gear drive portions and rotate in step, the gear drive portion of each side sets firmly in the inner rail, and with set firmly in the rack drive connection of outer rail, thereby make the synchronous relative outer rail that corresponds of both sides inner rail slip, ensure the synchronism of slide rail action of both sides, reliability and security that the electric slide rail works have been improved; meanwhile, the arrangement of driving pieces is reduced, and the structure of the electric sliding rail is simplified.

In the electric slide rail, the first driving component is in transmission connection with the gear driving part through a flexible shaft.

The electric slide rail further comprises a second driving part and two unlocking assemblies respectively matched with the two slide rails, wherein the unlocking assemblies are used for locking or unlocking the slide rails; an unlocking connecting rod is arranged between the two unlocking assemblies, and the output end of the second driving part is in transmission connection with the unlocking connecting rod so as to drive the two unlocking assemblies to synchronously act.

According to the electric slide rail, the supporting seat is fixedly arranged on the upper surface of the inner rail; the unlocking assembly comprises:

the unlocking cam is pivoted to the supporting seat and provides a rotating driving force by the second driving part;

the unlocking pin is inserted in the top wall of the inner rail, and the upper end of the unlocking pin and the working surface of the unlocking cam form a cam pair so as to drive the lower end of the unlocking cam to move in a reciprocating manner and switch between an unlocking working position and a locking working position;

the lock body is arranged in the inner cavity of the inner rail, the upper surface of the lock body is abutted against the lower end of the unlocking pin, a lock clamp formed by horizontal extension is arranged on one side of the lock body, and the lock clamp is adapted to lock grooves formed in the side walls of the inner rail and the outer rail; and is configured to: when the locking working position is switched to the unlocking working position, the lock is clamped in the inner rail lock groove and the outer rail lock groove and moves to be separated from the outer rail lock groove; when the unlocking working position is switched to the locking working position, the lock card is moved in the inner rail lock groove to be simultaneously arranged in the inner rail lock groove and the outer rail lock groove.

As above-mentioned electronic slide rail, the unblock subassembly still includes:

a resilient member disposed between the lock body and the inner rail and configured to: when the lock body is switched to the unlocking working position, the elastic component generates deformation reserve deformation energy after the lock body is displaced; and when the lock body is switched to the locking working position, the elastic component releases deformation to provide the reset acting force of the lock body.

In the electric slide rail according to the above, the second driving member is attached to the first cross member.

According to the electric slide rail, the bottom of the inner rail is provided with the supporting roller which can rotate around a horizontal axis perpendicular to the length direction of the inner rail;

the gap eliminating assembly comprises two auxiliary wheel assemblies which are respectively arranged on two sides of the inner rail along the width direction; the auxiliary wheel assembly comprises an auxiliary wheel which is rotatably connected with the inner rail, and the auxiliary wheel is obliquely arranged towards the outer side;

the top of the outer rail is provided with an opening extending along the length direction of the outer rail so that the inner rail is at least partially arranged in a rail cavity of the outer rail, the cavity bottom wall of the rail cavity is used for supporting the supporting roller, the cavity side wall and the cavity top wall of the rail cavity are connected through a convex transition curve wall, and the wheel surface of the auxiliary wheel is in contact with the transition curve wall.

The electric sliding rail as described above, the auxiliary wheel assembly further comprising an auxiliary bracket and an elastic member corresponding to the auxiliary wheel, the auxiliary bracket being rotatably connected to the inner rail, the auxiliary wheel being rotatably connected to the auxiliary bracket;

the elastic element is used for applying a rotating moment to the auxiliary bracket so as to enable the auxiliary bracket to act towards the direction that the auxiliary wheel approaches the transition curve wall.

The electric slide rail as described above, the rail cavity of the outer rail has a space for accommodating the cable member, and the cavity bottom wall of the rail cavity is used for slidably supporting the cable member.

According to the electric slide rail, the second cross beam is fixedly connected between the two inner rails, the controller is installed on the second cross beam and is in communication connection with the vehicle main controller through cables, and the controller is used for controlling the first driving part and the second driving part to act.

Drawings

FIG. 1 is a schematic diagram illustrating an assembly relationship of an electric slide rail according to an embodiment;

FIG. 2 is a schematic structural view of a single-sided slide rail of the electric slide rail of FIG. 1;

FIG. 3 is a schematic structural diagram of a driving mechanism of an electric slide rail according to an embodiment;

FIG. 4 is a schematic view of a side output end transmission connection structure of a first driving part of the driving mechanism in an embodiment;

fig. 5 is a schematic view of the unlocking mechanism of the electric slide rail in the embodiment after the outer rail is removed;

FIG. 6 is a schematic view of the overall structure of the unlocking assembly of the unlocking mechanism shown in FIG. 5;

FIG. 7 is a cross-sectional view of the release mechanism of the exemplary embodiment taken along the length of the slide rails;

FIG. 8 is a schematic view of the assembly of the locking clip and the inner rail locking groove in the embodiment;

FIG. 9 is a schematic view of an assembly relationship formed by the unlocking mechanism along the cross section of the slide rail in the embodiment;

FIG. 10 is a schematic view of the assembled relationship of the drive mechanism and the release mechanism to the first beam in an exemplary embodiment;

FIG. 11 is an exploded view of the inner rail assembly, outer rail assembly and drag chain in an exemplary embodiment;

FIG. 12 is a schematic structural view of an inner rail assembly according to an exemplary embodiment;

FIG. 13 is a schematic structural view of the inner rail of FIG. 12;

FIG. 14 is a schematic end view of an outer rail according to an exemplary embodiment;

FIG. 15 is a schematic view of the engagement of the anti-backlash assembly with the outer rail in an exemplary embodiment;

FIG. 16 is a schematic view of the coupling of a drag chain to an outer rail in an embodiment;

FIG. 17 is a schematic diagram of the coupling of the drag chain and the inner rail in the exemplary embodiment.

Description of reference numerals:

a slide rail 10;

the inner rail 11, the rail top wall 111, the rail side wall 112, the supporting wall 113, the inner rail locking groove 114 and the clamping groove 115;

outer rail 12, cavity bottom wall 121, bottom wall 122, side wall 123, transition connecting wall 124, transition curve wall 125, top wall 126, first top wall portion 1261, second top wall portion 1262, outer rail lock groove 1263;

a first beam 13, a second beam 14;

the driving mechanism 20, the first driving component 21, the supporting frame 211, the flexible shaft 22, the flexible shaft supporting frame 221, the sleeve 23, the gear driving part 24, the output gear 241 and the rack 25;

the unlocking mechanism 30, the unlocking cam 31, the cam groove 311, the unlocking pin 32, the penetrating hole 321, the limiting part 322, the lock body 33, the lock clamp 331, the spring wire 34, the threaded fastener 35, the guide sleeve 36, the small-diameter section 361, the second driving part 37, the unlocking connecting rod 38, the connecting rod bracket 381 and the supporting seat 39;

a supporting roller 41, a supporting roller shaft 42, an auxiliary wheel 43, an auxiliary bracket 44, a spring 45, an auxiliary wheel rotating shaft S1 and an auxiliary bracket rotating shaft S2;

a drag chain 50, a controller 60 and a fastener 70.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the present embodiment will be described in detail by taking the application of the electric slide rail shown in the drawings to a vehicle seat as an example, and it should be understood that specific dimensional parameters of the driving structure, the intermediate transmission component and the like in the embodiment do not substantially limit the technical solution claimed in the present application.

Referring to fig. 1 to 4, fig. 1 is a schematic view illustrating an assembly relationship of an electric slide rail according to an embodiment; FIG. 2 is a schematic structural view of a single-sided slide rail of the electric slide rail of FIG. 1; FIG. 3 is a schematic structural diagram of a driving mechanism of an electric slide rail according to an embodiment; fig. 4 is a schematic view of a transmission connection structure of an output end on one side of a first driving part of the driving mechanism in the embodiment.

In this embodiment, the electric slide rail includes two slide rails 10 arranged in parallel, each slide rail 10 has an inner rail 11 and an outer rail 12 that are matched with each other, and a first cross beam 13 is fixedly connected between the two inner rails 11, and in order to improve the balance of the overall structure and simplify the structural arrangement, the first cross beam 13 is preferably perpendicular to the length direction of the slide rail 10. Here, the inner rail 11 and the outer rail 12 are defined based on a structural covering relationship of two relatively displaceable bodies of the slide rail 10, and from an assembly perspective, when applied to a vehicle seat, the inner rail 11 is used for connecting with a seat body (not shown in the figure), and the outer rail 12 is used for connecting with a vehicle body or a base (not shown in the figure).

The electric slide rail further comprises a driving mechanism 20, and the driving mechanism 20 provides a driving force for sliding the inner rail 11 relative to the outer rail 12.

The driving mechanism 20 includes a first driving member 21 mounted on the first beam 13, and the first driving member 21 has two output ends, and is respectively in transmission connection with the two side sliding rails 10.

A gear driving part 24 is fixedly arranged on the inner rail 11, and the main body of the gear driving part 24 can be arranged in the inner cavity of the inner rail 11 so as to reasonably utilize the space of the inner cavity of the inner rail 11 and reduce the occupied space; the gear driving part 24 has an output gear 241, a rack 25 extending along the length direction of the outer rail 12 is fixedly arranged on the outer rail 12, and after the inner rail 11 and the outer rail 12 are assembled, the output gear 241 is engaged with the rack 25.

The output end of the first driving member 21 is in transmission connection with the gear driving portion 24 through the flexible shaft 22, so as to drive the output gear 241 to rotate, and since the output gear 241 is meshed with the rack 25 and the rack 25 is fixed in position, the gear driving portion 24 can slide relative to the rack 25 under the driving of the first driving member 21, thereby realizing the sliding of the inner rail 11 relative to the outer rail 12. It will be appreciated that the sliding direction of the inner rail 11 relative to the outer rail 12 can be determined by controlling the rotational direction in which the first drive member 21 drives the output gear 241.

In practical applications, the first driving part 21 may specifically select a motor having dual output shafts. The first driving member 21 is fixedly mounted on the first cross beam 13 through a support bracket 211, and preferably, the first driving member 21 is fixed at the middle position of the first cross beam 13, so that the two sides thereof and the transmission connection structure of the gear driving part 24 can be symmetrically arranged, and the whole structure is more balanced.

Adopt flexible axle 22 to realize the transmission between first drive disk assembly 21 and the gear drive portion 24 and be connected, utilize the bending deformation ability of flexible axle 22, can make the arrangement of first drive disk assembly 21 more nimble, reduce the axiality requirement between first drive disk assembly 21 and the gear drive portion 24 to flexible axle 22 can absorb certain moment of torsion, when the start-up adjusts the seat, can not appear the feeling of setback, can improve the travelling comfort in the user's use.

Further, a sleeve 23 may be sleeved outside the flexible shaft 22 for determining the installation position of the flexible shaft 22, so as to avoid position shift of the flexible shaft 22 during rotation, which is beneficial to ensuring stability of transmission, and obviously, in order to adapt to bending deformation of the flexible shaft 22, the sleeve 23 is made of a material with certain flexibility, such as plastic or rubber.

In a specific scheme, the gear driving part 24 is in a gear box structure form, a gear set with multi-stage transmission is arranged in the gear driving part, the speed can be adjusted by changing the transmission ratio, and the flexibility is good.

In order to restrict the relative position of the flexible shaft 22, a plurality of flexible shaft holders 221 are provided, which may be installed at the upper portions of the first cross member 13 and the inner rail 11, each of the flexible shaft holders 221 having a catching hole in which the flexible shaft 22, on which the sleeve 23 is fitted, may be caught.

The number and spacing of the flexible shaft supports 221 may be set as needed, and in the illustrated embodiment, one flexible shaft support 221 is specifically mounted on the upper portion of the inner rail 11.

The flexible shaft support 221 and the support frame 211 may be fixed to the corresponding components by screwing, welding, or the like.

In the specific scheme, the rack 25 is fixed with the outer rail 12 through a riveting process, the rivet column is arranged on the rack 25, the pupil matched with the rivet column is formed in the outer rail 12, instantaneous pressurization and riveting of the rivet column are achieved through riveting equipment, the time consumption of the installation process is short, and the installation is convenient. The rack 25 specifically can adopt the plastics material, and the tolerance nature of plastics is better, during the assembly, can realize zero clearance fit with output gear 241, and like this, the decibel value of the produced noise of collision is less between output gear 241 and the rack 25, can not have the abnormal sound, can promote user's use and experience.

In this embodiment, the electric slide rail further includes an unlocking mechanism 30, the unlocking mechanism 30 is used for unlocking or locking the inner rail 11 and the outer rail 12, when the seat position is determined, the inner rail 11 and the outer rail 12 are locked to limit the position of the seat, and when the position of the seat needs to be adjusted, the locking of the inner rail 11 and the outer rail 12 is released, so that the inner rail 11 drives the seat to slide relative to the vehicle body to adjust the position.

Referring to fig. 5 to 10 together, fig. 5 is a schematic view illustrating an unlocking mechanism of an electric slide rail with an outer rail removed according to an embodiment of the present invention; FIG. 6 is a schematic view of the overall structure of the unlocking assembly of the unlocking mechanism shown in FIG. 5; FIG. 7 is a cross-sectional view of the release mechanism of the exemplary embodiment taken along the length of the slide rails; FIG. 8 is a schematic view of the assembly of the locking clip and the inner rail locking groove in the embodiment; FIG. 9 is a schematic view of an assembly relationship formed by the unlocking mechanism along the cross section of the slide rail in the embodiment; FIG. 10 is a schematic view of the assembled relationship of the drive mechanism and the unlock mechanism to the first beam in an exemplary embodiment.

In this embodiment, the unlocking mechanism 30 includes a second driving part 37 and two unlocking assemblies, and the two unlocking assemblies are respectively matched with the two side slide rails 10 to respectively control unlocking and locking of the two slide rails 10. An unlocking connecting rod 38 is further arranged between the two unlocking assemblies, and the output end of the second driving part 37 is in transmission connection with the unlocking connecting rod 38 so as to drive the two unlocking assemblies to synchronously act and realize synchronous unlocking or locking of the sliding rails 10 on two sides.

Thus, the synchronous control of the two slide rails 10 is completed by one second driving part 37, so that the synchronism of the action of the electric slide rail can be further improved, and the operation safety and the reliability can be ensured.

In a specific embodiment, the unlocking assembly of the unlocking mechanism 30 is mainly composed of an unlocking cam 31, an unlocking pin 32 and a lock body 33.

The upper surface of the inner rail 11 is fixedly provided with a supporting seat 39, the unlocking cam 31 is pivoted on the supporting seat 39, and the second driving part 37 provides a rotary driving force to drive the unlocking pin 32 to reciprocate. The unlocking cam 31 may be directly or indirectly pivoted to the support seat 39.

The unlocking pin 32 is inserted into the rail top wall 111 of the inner rail 11, and the upper end of the unlocking pin and the working surface of the unlocking cam 32 form a cam pair to drive the lower end of the unlocking pin to move in a reciprocating manner to be switched between an unlocking working position and a locking working position; it should be understood that the "unlocking position" and the "locking position" refer to positions that ensure the unlocking and locking positions of the inner rail 11 and the outer rail 12 of the slide rail 10 relative to each other, and are not limited to a specific "point" position.

The lock body 33 is arranged in the inner cavity of the inner rail 11, the upper surface of the lock body is abutted against the lower end of the unlocking pin 32 arranged in the inner rail 11, and one side of the lock body 33 is provided with a lock clamp 331 formed by horizontally extending, specifically, the lock clamp 331 is adapted to lock grooves formed on the side walls of the inner rail 11 and the outer rail 12; and is configured to: when the locking position is switched to the unlocking position, the locking clip 331 is displaced out of the outer rail locking groove 1263 from the inner rail locking groove 114 and the outer rail locking groove 1263; when the lock is switched from the unlock operating position to the lock operating position, the lock catch 33 is displaced in the inner rail lock groove 114 to be simultaneously placed in the inner rail lock groove 114 and the outer rail lock groove 1263. In the unlocking position, the lock clip 331 needs to move downward along with the lock body 33 to be separated from the outer rail lock groove 1263 and only placed in the inner rail lock groove 114, and the inner rail 11 and the outer rail 12 can slide relatively; in the locked position, the lock 331 needs to move with the lock body 33 to be simultaneously disposed in the outer rail lock groove 1263 and the inner rail lock groove 114, thereby limiting the relative sliding between the inner rail 11 and the outer rail 12.

In actual use, the second driving component 37 is used as a power source to realize automatic control, specifically, the adaptive unlocking cam 31 and the unlocking pin 32 are adopted to convert and output the acting force switched between the unlocking working position and the locking working position; based on the synchronous action of the unlocking pin 32 and the lock body 33, the unlocking and the locking of the slide rail 10 are realized through the lock card 331 on the lock body 33 and the lock grooves respectively arranged on the side walls of the inner rail 11 and the outer rail 21.

In order to ensure that the slide rail 10 is quickly returned to the locked state, the unlocking assembly 30 may preferably add an elastic member between the lock body 33 and the inner rail 11, and is configured to: when the lock body 33 is switched to the unlocking working position, the elastic component generates deformation storage deformation energy after the lock body is displaced; when the lock body is switched to the locking working position, the elastic component part releases deformation to provide the reset acting force of the lock body 33.

Specifically, the elastic member is a spring wire 34 threaded through the body of the lock body 33, and a locking groove 115 adapted to the spring wire 34 is disposed on the rail side wall 112 of the inner rail 11. The clamping groove 115 can be realized by adopting the processes of welding, bonding or riveting and the like, the space of the inner cavity of the inner rail 11 is fully utilized, and the device has the characteristics of compact and reliable structure. When the slide rail 10 is switched to the locking working position, the spring wire 34 releases the deformation energy to provide the reset force of the lock body 33, so that the slide rail 10 can be further ensured to be quickly reset to the locking state.

In a specific scheme, the unlocking cam 31 forms a working surface matched with the unlocking pin 32 through a cam groove 311 formed in the unlocking cam, and the unlocking pin 32 is located beside the unlocking cam 31 and is provided with a driven pin horizontally extending and matched in the cam groove 311. The follower pin may be integrally formed with the body of the release pin 32 or may be formed by separate assembly.

As shown in fig. 7, a fitting hole 321 is opened at the upper end of the unlocking pin 32, and the follower pin is formed by a screw fastener 35 fitted into the fitting hole 321 and the cam groove 311. The driven pin matched with the cam groove 311 is formed by adopting the threaded fastener 35, so that the manufacturing cost of a product can be effectively controlled while good assembly manufacturability is obtained, and the self-space of the structure is fully utilized to a certain extent.

Theoretically, the reciprocating movement of the unlocking pin 32 keeps the linear displacement in the optimum state, and in order to avoid the unlocking pin 32 from displacement and swing in the vertical direction, a guide sleeve 36 may be preferably nested between the rail top wall 111 of the inner rail 11 and the unlocking pin 32. Specifically, the guide sleeve 36 is designed to have a reducing shape with a large upper part and a small lower part, that is, the lower part of the outer peripheral surface of the guide sleeve 36 is contracted to form a limiting step, and the lower part (the small diameter section 361) is inserted into the rail top wall 111 of the inner rail 11, so that the assembly manufacturability is good. And the lower end of the unlocking pin 32 is provided with a limiting part 322 which extends outwards in the radial direction, and the limiting part 322 forms vertical limiting with the lower end of the guide sleeve 36 and/or the rail top wall 111 of the inner rail 11, so that the stability of the dynamic matching relationship of the mechanism is ensured.

Furthermore, the unlocking cams 31 of the two unlocking assemblies are respectively positioned at the outer sides of the corresponding supporting seats 39 and are respectively fixed at the two ends of the unlocking connecting rod 38, so that the whole structure is more compact and reasonable; in particular, the unlocking link 38 has a journal that fits into the axial hole of the support 39 to establish the pivotal connection between the unlocking cam 31 and the support 39.

In a preferred embodiment, as shown in fig. 10, the unlocking link 38 is connected to the first cross member 13 through a plurality of link brackets 381, so as to provide the necessary supporting force to the unlocking link 38, and ensure the stability and reliability of the power transmission of the unlocking link 38. Specifically, the unlocking link 38 is pivotally connected to the link bracket 381, and the link bracket 381 may be fixed to the first cross member 13 by clamping, welding, or screwing.

It can be understood that, in order to avoid the unlocking connecting rod 38 interfering with the related transmission components such as the first driving component 21 and the flexible shaft 22, the related components of the driving mechanism 20 and the related components of the unlocking structure 30 are separately arranged on both sides of the first cross beam 13, so that the overall structure of the electric slide rail can be more compact and occupy less space.

Specifically, the inner rail lock groove 114 and the outer rail lock groove 1263 for fitting the lock catch 33 may be designed according to a combination of specific assembly requirements of the inner rail 11 and the outer rail 12. Such as but not limited to the preferred exemplary illustrations in the figures.

Specifically, the inner rail 11 includes a rail top wall 111 and rail side walls 112 bent downward along two sides of the rail top wall 111, wherein a middle section of the rail side walls 112 is further bent upward horizontally and outward to form a support wall 113, and the support wall 113 and the rail side walls 112 are correspondingly provided with inner rail locking grooves 114.

Referring to fig. 14, fig. 14 is a schematic end view of an outer rail according to an embodiment. The top wall 126 of the outer rail 12 has an opening extending along the length thereof so that the main body of the inner rail 11 can be placed in the rail cavity of the outer rail 12, and thus the top wall 126 of the outer rail 12 is divided into a first top wall portion 1261 and a second top wall portion 1262, and when the arrangement is made, the inner end of one side top wall portion of the outer rail 12, which is matched with the unlocking assembly, is bent downward, and an outer rail locking groove 1263 is formed at the downward bent section.

Preferably, the outer rail 12 has a symmetrical structure, the inner ends of the two top wall portions are bent downward, and the outer rail locking grooves 1263 are formed in the two downward bent portions, so that the installation direction of the outer rail 12 is not required to be considered during the assembly, and the assembly efficiency can be improved.

Based on the functional requirement of adapting to the lock 331, the inner rail lock groove 114 and the outer rail lock groove 1263 are horizontally arranged oppositely, the groove bottom of the inner rail lock groove 114 is lower than the lower edge of the outer rail lock groove 1263 along the height direction, and the height difference needs to be larger than or equal to the thickness dimension of the lock 331, so that when the self-locking working position is switched to the unlocking working position, the lock 33 is shifted to be separated from the outer rail lock groove 1263 in the inner rail lock groove 114 and the outer rail lock groove 1263, and unlocking is realized.

The movement principle of the unlocking mechanism 30 of the present embodiment is briefly explained as follows:

unlocking: as shown in fig. 7, when the second driving member 37 rotates counterclockwise to drive the synchronous unlocking link 38 to rotate counterclockwise, the synchronous unlocking link 38 rotates counterclockwise to drive the unlocking cams 31 on both sides to rotate counterclockwise, the unlocking cam 31 rotates counterclockwise to drive the unlocking pin 32 to move downward in the guide sleeve 36, the unlocking pin 32 moves downward to press down the lock body 33, the pressing position of the unlocking pin 32 is located at the middle position of the lock body 33, the spring wire 34 is deformed by a force, the lock body 33 moves downward, the lock body 33 drives the lock catch 331 to move downward, and when the lock catch 331 moves downward to disengage from the outer rail lock groove 1263 of the outer rail 12, the inner rail 11 and the outer rail 12 are not limited by the lock catch 331 and can move relatively under the driving of the force.

Locking: as shown in fig. 7, when the second driving member 37 rotates clockwise to drive the synchronous unlocking connecting rod 38 to rotate clockwise, the synchronous unlocking connecting rod 38 rotates clockwise to drive the unlocking cams 31 on both sides to rotate clockwise, the unlocking cam 31 rotates clockwise to drive the unlocking pin 32 to move upwards in the guide sleeve 36, the unlocking pin 32 moves upwards without pressing down the lock body 33, and the lock body 33 does not receive a pressing down force, the spring force generated by the spring wire 34 due to the deformation of the spring wire due to the previous pressing down provides an upward movement force for the lock body 33, the lock body 33 moves upwards, the lock body 33 drives the lock clamp 331 to move upwards, and when the lock clamp 331 moves upwards to enter the outer rail locking groove 1263 of the outer rail 12, the inner rail 11 and the outer rail 12 are restricted by the lock clamp 331 and cannot move relatively, so as to achieve locking.

Referring to fig. 11 to 15 together, fig. 11 is an exploded view of an inner rail assembly, an outer rail assembly and a drag chain in an embodiment; FIG. 12 is a schematic structural view of an inner rail assembly according to an exemplary embodiment; FIG. 13 is a schematic structural view of the inner rail of FIG. 12; FIG. 14 is a schematic end view of an outer rail according to an exemplary embodiment; FIG. 15 is a schematic view of the engagement of the anti-backlash assembly with the outer rail in accordance with an embodiment of the present invention.

The inner rail 11 and the components mounted on the inner rail 11 are collectively referred to herein as an inner rail assembly, and correspondingly, the outer rail 12 and the components mounted on the outer rail 12 are collectively referred to herein as an outer rail assembly.

In this embodiment, the bottom of the inner rail 11 is provided with a support roller 41, and the inner rail 11 slides relative to the outer rail 12 through the support roller 41 to ensure the smoothness of the seat movement.

In the scheme shown in the figure, the bottom parts of the front end and the rear end of the inner rail 11 are respectively and fixedly provided with a supporting roller shaft 42, and the two ends of each supporting roller shaft 42 are respectively pivoted with a supporting roller 41; the support roller shaft 42 may be fixed to the inner rail 11 by welding or screwing. In practical applications, the number and arrangement of the supporting rollers 41 can be set according to requirements. Preferably, the inner rail 11 is provided with support rollers 41 on both sides thereof in the width direction to ensure the balance and stability of sliding.

It will be apparent that the axis of the support roller axle 42 is perpendicular to the length of the inner track 11.

Specifically, the middle part of the bottom wall of the outer rail 12 is recessed downwards to form a groove-shaped structure, the outer rail 12 is connected with the vehicle body or the base through the groove-shaped structure, obviously, the groove-shaped structure extends along the length direction of the outer rail 12, so that the bottom wall of the outer rail 12 is divided into a groove bottom wall 122 and cavity bottom walls 121 positioned at two sides of the groove bottom wall 122, the outer rail 12 is connected with the vehicle body or the base through fasteners 70 penetrating through the groove bottom wall 122, and thus, the heads of the fasteners 70 are positioned in the groove-shaped structure and do not protrude out of the cavity bottom walls 121, and the matching of the outer rail 12 and the inner rail 11 is not influenced and interfered; the two cavity bottom walls 121 are respectively used for supporting the supporting rollers 41 on two sides of the inner rail 11.

The electric sliding rail is also provided with a gap eliminating assembly for eliminating the gap in the width direction and the gap in the height direction of the inner rail 11 and the outer rail 12 and ensuring the smoothness of the sliding of the inner rail 11 relative to the outer rail 12.

In a specific scheme, the gap eliminating assembly comprises two auxiliary wheel assemblies which are respectively arranged on two sides of the inner rail 11 along the width direction, each auxiliary wheel assembly comprises an auxiliary wheel 43 which is rotatably connected to the inner rail 11, the auxiliary wheels 43 are obliquely arranged towards the outer side, and it can be understood that the upper ends of the auxiliary wheels 43 on two sides of the inner rail 11 are obliquely arranged towards the outer side when viewed from the end surface direction of the slide rail 10.

The auxiliary wheel 43 is engaged with the outer rail 12, and specifically, the side wall 123 of the outer rail 12 is connected with the top wall of the corresponding side wall through a convex transition curve wall 125, and the auxiliary wheel 43 is in contact with the transition curve wall 125 of the corresponding side.

Due to the arrangement of the auxiliary wheel assembly, the supporting roller 41 is combined, when the inner rail 11 slides relatively, under the matching action of the supporting roller 41 and the auxiliary wheel 43, the gap in the width direction and the gap in the height direction of the inner rail 11 and the outer rail 12 can be eliminated, meanwhile, the supporting roller 41 and the auxiliary wheel 43 can rotate relative to the inner rail 11, the contact with the outer rail 12 is a rolling basis, and the friction force between the inner rail 11 and the outer rail 12 can be effectively reduced.

In a preferred embodiment, the degree of the outward inclination of the auxiliary wheel 43 relative to the vertical direction is 45 degrees, that is, the included angle between the wheel surface of the auxiliary wheel 43 and the vertical direction is 45 degrees, so that the circumferential surface of the auxiliary wheel 43 can be in close contact with the transition curve wall 125, and the gap eliminating effect in the width direction and the height direction is consistent and better.

More specifically, in order to keep the auxiliary wheel 43 in contact with the transition curved wall 125 of the outer rail 12 at all times during the sliding of the inner rail 11, the auxiliary wheel assembly further includes an auxiliary bracket 44 and a resilient member corresponding to the auxiliary wheel 43, wherein the auxiliary bracket 44 is rotatably connected to the inner rail 11, and particularly, the auxiliary bracket 44 is pivotally connected to the supporting wall 113 of the inner rail 11, as mentioned above, the supporting wall 113 of the inner rail 11 is formed by bending the rail side wall 112 thereof outward and upward, so that the degree of outward inclination of the supporting wall 113 is related to the degree of outward inclination of the auxiliary wheel 43, and can be set as required.

The auxiliary wheel 43 is rotatably connected to the auxiliary support 44, and the elastic member is configured to apply a rotational moment to the auxiliary support 44 to move the auxiliary support 44 toward the direction in which the auxiliary wheel 43 approaches the transition curve wall 125.

In a specific arrangement, the rotation axis S2 of the auxiliary bracket 44 is not collinear with the rotation axis S1 of the auxiliary wheel 43, so that the relative position between the auxiliary wheel 43 and the inner rail 11 can be changed when the auxiliary bracket 44 rotates, and the auxiliary wheel 43 always has a tendency to move in a contact direction with the transition curve wall 125 through the arrangement of the elastic element and the auxiliary bracket 44.

In the illustrated embodiment, the auxiliary wheel assembly on each side of the inner rail 11 is specifically provided with two auxiliary wheels 43 and two corresponding auxiliary brackets 44, which are correspondingly provided at the front and rear ends of the supporting wall 113, and the elastic element is specifically a spring 45 connected between the two auxiliary brackets 44.

In a specific application, the number of the auxiliary wheels 43 of each auxiliary wheel assembly and the specific arrangement form of the elastic elements can be set as required.

In this embodiment, the rail cavity of the outer rail 12 also has a space for accommodating the cable components, in particular, the cavity bottom wall 121 thereof is used for supporting the cable components. The cable components specifically include a cable and a drag chain 50 through which the cable is threaded.

Please refer to fig. 16 and 17 in combination with fig. 11, wherein fig. 16 is a schematic diagram illustrating the matching of the drag chain and the outer rail in the embodiment; FIG. 17 is a schematic diagram of the coupling of the drag chain and the inner rail in the exemplary embodiment.

The part of the cavity bottom wall 121 of the outer rail 12 close to the groove bottom wall 122 is used for supporting the supporting roller 41 installed on the inner rail 11, and the part of the cavity bottom wall 121 extending to the outside is used for carrying the drag chain 50 with the cable arranged in the penetrating way.

After setting up like this, utilize outer rail 12's structural design, make it hold relevant part and the cable part that the inner rail constitutes simultaneously, integrate more, occupation space is littleer.

Specifically, one end of the drag chain 50 may be connected to the side wall 123 of the outer rail 12, specifically, a clamping manner or the like may be adopted, the other end of the drag chain may be connected to the end of the inner rail 11, and a structure connected to the drag chain 50 may be provided at the corresponding end of the inner rail 11, so as not to affect the setting of the related structural components on the inner rail 11.

When the device is applied to a vehicle seat, one end of a cable penetrating through the tow chain 50 can be in communication connection with a master controller of a vehicle body, the other end of the cable penetrates through the tow chain 50 and then is in communication connection with a controller 60 arranged on the slide rail 10, and the controller 60 is used for receiving an instruction of the master controller to control the action sequence and the action direction of the first driving part 21 and the second driving part 37, so that the relative sliding of the inner rail 11 and the outer rail 12 and the control of the sliding direction are realized.

In this embodiment, a second cross member 14 is fixed between the two inner rails 12, and the controller 60 is mounted on the second cross member 14. Second beam 14 may be positioned relatively close to first beam 13, which facilitates controller 60 branching off cables that communicatively couple first drive component 21 and second drive component 37 on first beam 13.

The controller 60 may be connected to the second beam 14, in particular, via a mounting bracket.

It is right above that the utility model provides an electronic slide rail has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The electric sliding rail comprises a first driving part and two sliding rails arranged in parallel, the sliding rails comprise an inner rail and an outer rail, and the inner rail can slide relative to the outer rail; the device is characterized by further comprising a first cross beam fixedly connected between the two inner rails, wherein the first driving part is arranged on the first cross beam;

2. The motorized slide rail of claim 1, wherein the first drive member is drivingly connected to the gear drive via a flexible shaft.

3. The electric sliding rail according to claim 1, further comprising a second driving component and two unlocking assemblies respectively engaged with the two sliding rails, wherein the unlocking assemblies are used for locking or unlocking the sliding rails; an unlocking connecting rod is arranged between the two unlocking assemblies, and the output end of the second driving part is in transmission connection with the unlocking connecting rod so as to drive the two unlocking assemblies to synchronously act.

4. The electric slide rail according to claim 3, wherein a support base is fixedly arranged on the upper surface of the inner rail; the unlocking assembly comprises:

5. The power slide of claim 4, wherein the unlocking assembly further comprises:

6. The motorized slide rail of claim 3, wherein the second drive member is mounted to the first cross member.

7. The electric sliding rail according to claim 1, wherein the bottom of the inner rail is provided with a supporting roller, and the supporting roller can rotate around a horizontal axis perpendicular to the length direction of the inner rail;

8. The electric slide rail according to claim 7, wherein the auxiliary wheel assembly further comprises an auxiliary bracket and an elastic member corresponding to the auxiliary wheel, the auxiliary bracket being rotatably connected to the inner rail, the auxiliary wheel being rotatably connected to the auxiliary bracket;

9. The power slide of any one of claims 1-8, wherein the rail cavity of the outer rail has a space for accommodating the cable member, and the cavity bottom wall of the rail cavity is used for slidably supporting the cable member.

10. The electric slide rail according to any one of claims 3 to 6, wherein a second cross beam is fixedly connected between the two inner rails, a controller is mounted on the second cross beam, the controller is in communication connection with a vehicle main controller through a cable, and the controller is used for controlling the first driving part and the second driving part to move.