CN220416138U - Electric telescopic slide rail - Google Patents

Abstract

The utility model discloses an electric telescopic sliding rail which comprises a fixed rail, a movable rail and a middle rail positioned between the fixed rail and the movable rail. The middle rail comprises a web plate and flange plates, wherein the flange plates are positioned on two sides of the web plate and form an I-shaped structure with the web plate, and one side, far away from the web plate, of each flange plate is connected with the fixed rail and the movable rail through rolling parts. One side of the fixed rail facing the middle rail is provided with a driving part, the driving part comprises a moving part which can move along the telescopic direction of the movable rail, and the moving part penetrates through the web plate and is connected with the movable rail. The electric telescopic slide rail has the advantages of reducing the structural volume and simultaneously having the stability of sliding.

Description

Electric telescopic slide rail

Technical Field

The utility model relates to the technical field of sliding rails, in particular to an electric telescopic sliding rail.

Background

With the development of automobile technology and the continuous improvement of the requirements of consumers on the performance of automobile interiors, the market demand for space transformation or movement of automobile interiors is increasing. Because the electric telescopic sliding rail, especially the three-section telescopic sliding rail, can generate enough strokes, the electric telescopic sliding rail is widely applied to meeting the space transformation of automotive interiors. However, the existing electric telescopic sliding rail is relatively complex in structure and large in size, and for a limited space in a vehicle body, it is necessary to develop a miniaturized electric telescopic sliding rail.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks, an object of the present utility model is to provide a miniaturized electric telescopic sliding rail, which has a reduced structural volume and a sliding stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric telescopic slide rail comprises a fixed rail, a movable rail and a middle rail positioned between the fixed rail and the movable rail. Wherein,

the middle rail comprises a web plate and flange plates, wherein the flange plates are positioned at two sides of the web plate and form an I-shaped structure with the web plate, and one side of the flange plates, which is far away from the web plate, is connected with the fixed rail and the movable rail through rolling parts;

one side of the fixed rail facing the middle rail is provided with a driving part, the driving part comprises a moving part which can move along the telescopic direction of the movable rail, and the moving part penetrates through the web plate and is connected with the movable rail.

The utility model has the beneficial effects that:

1. the moving travel of the movable rail can be increased as much as possible on the premise of limited volume by arranging the fixed rail, the movable rail and the middle rail, so that the application range of the electric telescopic sliding rail is enlarged; the movable support between the middle rail and the fixed rail as well as between the movable rail can be increased through the arrangement of the rolling part, so that the stability of the movable rail and the middle rail in moving is improved; the movable rail is driven to move by the driving part positioned on the fixed rail, so that the automatic telescopic performance of the movable rail is realized, and the whole volume of the electric telescopic sliding rail is reduced;

2. in the middle rail, the I-shaped structure formed by the web plate and the flange plate ensures the structural strength of the middle rail and simultaneously enables the web plate, the fixed rail and the movable rail to form a cavity; the rolling parts are arranged on two sides of the middle rail, so that rolling support among the middle rail, the movable rail and the fixed rail of the rolling parts is ensured, a cavity can be left out to realize built-in installation of the driving part, the integration level of the electric telescopic sliding rail is improved, and the purpose of reducing the volume of the electric telescopic sliding rail is achieved;

3. in the drive part, the moving part passes through the middle rail and is directly connected with the movable rail, so that the movement of the moving part can be directly transmitted to the movable rail, and further, the energy consumption loss in the drive process of the drive part is reduced.

Further, the rolling part comprises two frame bodies which are vertically distributed and are in one-to-one correspondence with the fixed rail and the movable rail, at least one ball arranged along the extending and retracting direction of the movable rail is arranged on each frame body, one side of each ball is in rolling contact with the flange plate, and the other side of each ball is in rolling contact with the fixed rail or the movable rail. The ball can be limited through the arrangement of the frame body; through rolling contact between the balls and the flange plates as well as between the balls and the fixed rail (or the movable rail), load support in the sliding rail stretching process can be realized, friction resistance in the sliding rail stretching process can be reduced, the sliding rail stretching smoothness is ensured, and meanwhile, the sliding rail stretching stability is improved.

Further, two ends of the flange plate along the extending and contracting direction of the movable rail are respectively provided with stop blocks which are arranged in one-to-one correspondence with the frame body, one end of the frame body can be abutted to the corresponding stop block, and the other end of the frame body can be abutted to the corresponding fixed rail or the corresponding limit hook of the movable rail. The position of the frame body can be limited through the arrangement of the stop block and the limit hook, and then the moving range of the movable rail and the middle rail is limited.

Further, one side of the flange plate, which is far away from the web plate, is also provided with a first arc track which is arranged in one-to-one correspondence with the frame body, and the first arc track is matched with the shape of the ball. The rolling direction of the ball can be guided through the arrangement of the first arc-shaped track.

Further, the flange plate comprises a plate body, two ends of the plate body perpendicular to the web plate direction extend to form an upper plate body and a lower plate body respectively, and one sides of the upper plate body and the lower plate body, which are far away from the web plate, are provided with a first arc track respectively. The arrangement of the upper plate body and the lower plate body can form an I-shaped structure between the flange plate and the web plate, and the first arc-shaped track is respectively arranged on the upper plate body and the lower plate body, so that mutual interference in the rolling process of the balls on the two frame bodies can be avoided.

Furthermore, the upper plate body and the lower plate body are connected with the web plate in a smooth transition manner through the arc surface on one side of the web plate, so that the connection area of the junction of the upper plate body, the lower plate body and the web plate is increased, and the structural strength of the junction is further ensured.

Further, the fixed rail and the movable rail are respectively provided with a second arc-shaped rail for rolling contact of the balls. The ball can be limited and guided through the cooperation of the second arc-shaped track and the first arc-shaped track.

Further, the driving part also comprises a motor and a screw rod, and the motor is arranged on the fixed rail; the screw rod is positioned in a lower cavity formed by the web plate and the fixed rail, one end of the screw rod is connected with the motor, and the other end of the screw rod is arranged on the fixed rail through the mounting seat.

Further, the moving part comprises a nut seat which is sleeved on the screw rod in a threaded manner, and one end, far away from the fixed rail, of the nut seat is connected with the movable rail. The screw rod is driven to rotate through the motor, and the rotation of the screw rod is converted into linear movement of the nut seat through the threaded connection of the nut seat and the screw rod, so that the linear movement of the movable rail connected with the nut seat is realized.

Further, one end of the fixed rail is provided with a motor base for installing a motor, and the other end of the fixed rail is provided with a baffle for limiting the position of the middle rail.

Further, web grooves for the moving part to move are formed in the web, and two sides of the web grooves perpendicular to the moving direction of the moving part are not contacted with the moving part. The arrangement of the web plate slot ensures the direct connection of the moving part and the movable rail, and can limit the moving range of the moving part on the web plate; the two sides of the web plate groove perpendicular to the moving direction of the moving piece are limited to be not in contact with the moving piece, so that friction resistance in the moving process of the moving piece can be reduced, and the moving smoothness of the moving piece is ensured.

Drawings

Fig. 1 is a schematic structural view of an electric telescopic sliding rail according to an embodiment of the present utility model;

FIG. 2 is an exploded view of an electrically retractable sliding track according to an embodiment of the present utility model;

FIG. 3 is a side view of an electrically retractable sliding track according to an embodiment of the present utility model;

FIG. 4 is a schematic view in section in the direction A-A of FIG. 3;

FIG. 5 is a schematic view of a middle rail according to an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a middle rail according to an embodiment of the present utility model;

FIG. 7 is a schematic view illustrating a contracted state of an electric telescopic rail according to an embodiment of the present utility model;

FIG. 8 is a schematic view of an embodiment of the utility model in a fully extended position;

FIG. 9 is a schematic view of a movable rail according to an embodiment of the present utility model;

FIG. 10 is a schematic cross-sectional view of a movable rail according to an embodiment of the present utility model;

fig. 11 is a schematic structural diagram of a driving portion according to an embodiment of the present utility model.

In the figure:

1-a fixed rail; 11-a fixed rail body; 111-fixed rail baffles; 12-fixing the side rails;

2-a movable rail; 21-a movable rail body; 211-movable rail baffles; 22-movable side rails;

3-middle rail; 31-a web; 311-web slotting; 32-flange plates; 321-first arc track; 322-plate body; 323-upper plate body; 324-lower plate body; 33-stop block;

4-a rolling part; 41-a frame body; 42-ball;

5-a driving part; 51-a motor; 52-screw rod; 53-nut seat; 54-motor base;

6-limiting hooks;

7-second arc track.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Examples

Referring to fig. 1-4, the electric telescopic sliding rail of the utility model comprises a fixed rail 1, a movable rail 2 and a middle rail 3 positioned between the fixed rail 1 and the movable rail 2. The middle rail 3 comprises a web plate 31 and flange plates 32, the flange plates 32 are located on two sides of the web plate 31 and form an I-shaped structure with the web plate 31, and one side, away from the web plate 31, of the flange plates 32 is connected with the fixed rail 1 and the movable rail 2 through rolling parts 4. The fixed rail 1 is provided with a driving part 5 towards one side of the middle rail 3, and the driving part 5 comprises a moving part capable of moving along the extending and retracting direction of the movable rail 2, and the moving part penetrates through the web plate 31 and is connected with the movable rail 2.

Firstly, the arrangement of the fixed rail 1, the movable rail 2 and the middle rail 3 can increase the telescopic travel of the sliding rail as much as possible on the premise that the volume of an electric telescopic sliding rail (hereinafter simply referred to as a sliding rail) is limited, so that the application range of the sliding rail is enlarged; secondly, the movable support between the middle rail 3 and the fixed rail 1 and between the middle rail 3 and the movable rail 2 can be increased through the arrangement of the rolling part 4, so that the stability in the movement of the movable rail 2 and the middle rail 3 is improved; the movable rail 2 is driven to move through the driving part 5 positioned on the fixed rail 1, so that the automatic telescopic performance of the movable rail 2 is realized, and the whole size of the sliding rail is reduced through the built-in driving part 5.

In the middle rail 3, the I-shaped structure formed by the web plate 31 and the flange plate 32 ensures the structural strength of the middle rail 3, and simultaneously enables a cavity for accommodating the driving part 5 to be formed between the web plate 31 and the fixed rail 1 as well as between the web plate 31 and the movable rail 2, so that the built-in installation of the driving part 5 is facilitated, the aim of reducing the whole volume of the sliding rail is achieved, the rolling parts 4 are arranged on two sides of the middle rail 3, rolling support among the middle rail 3, the movable rail 2 and the fixed rail 1 of the rolling parts 4 is ensured, and the built-in installation of the driving part 5 can be realized by freeing the cavity, thereby being beneficial to the design of light weight and integration of the sliding rail.

In addition, in the driving part 5, the moving part passes through the middle rail 3 and is directly connected with the movable rail 2, so that the movement of the moving part can be directly transmitted to the movable rail 2, and further, the energy consumption loss in the driving process of the driving part 5 is reduced.

In some embodiments, referring to fig. 4, the rolling portion 4 includes two frame bodies 41 that are vertically distributed and are disposed in one-to-one correspondence with the fixed rail 1 and the movable rail 2, at least one ball 42 that is arranged along the extending direction of the movable rail 2 is disposed on each frame body 41, one side of the ball 42 is in rolling contact with the flange plate 32, and the other side is in rolling contact with the fixed rail 1 or the movable rail 2. The ball 42 can be limited by the arrangement of the frame 41; through the rolling contact between the balls 42 and the flange plate 32 and the fixed rail 1 (or the movable rail 2), the load support in the sliding rail stretching process can be realized, the friction resistance in the sliding rail stretching process can be reduced, the sliding rail stretching smoothness is ensured, and meanwhile, the sliding rail stretching stability is improved.

Further, referring to fig. 5, two ends of the flange plate 32 along the extending direction of the movable rail 2 are respectively provided with stop blocks 33 corresponding to the frame 41 one by one, one end of the frame 41 can be abutted to the corresponding stop block 33, and the other end can be abutted to the corresponding limit hook 6 of the fixed rail 1 or the movable rail 2. The position of the frame 41 can be limited by the arrangement of the stopper 33 and the limit hook 6, and the movement ranges of the movable rail 2 and the middle rail 3 can be further limited.

Illustratively, the upper frame 41 is located between the movable rail 2 and the middle rail 3, and the lower frame 41 is located between the fixed rail 1 and the middle rail 3. Referring to fig. 7, when the slide rail is in a contracted state, both the two frame bodies 41 are positioned at the middle position of the middle rail 3, and both ends of the two frame bodies are not abutted with the corresponding stop block 33 and the corresponding limit hook 6; when the movable rail 2 stretches out under the action of the driving part 5, the limit hooks 6 of the movable rail 2 can be abutted to the frame 41 positioned above; along with the continuous extension of the movable rail 2, the limit hooks 6 of the movable rail 2 can drive the upper frame 41 to synchronously move until the upper frame 41 is abutted to the stop block 33 of the middle rail 3; along with the continuous extension of the movable rail 2, the movable rail 2 can drive the middle rail 3 to synchronously move due to the abutting action of the stop block 33 of the middle rail 3 of the upper frame 41 until the other stop block 33 of the middle rail 3 can abut on the lower frame 41; along with the continuous extension of the movable rail 2, the lower frame 41 can move synchronously with the middle rail 3 until the lower frame 41 abuts against the limit hook 6 of the fixed rail 1, and at this time, the sliding rail is in a fully extended state as shown in fig. 8.

Since the frame 41 is directly placed between the middle rail 3 and the fixed rail 1 (or the movable rail 2) and is not fixed, movement of the frame 41 in a non-sliding rail extending and retracting direction may occur during sliding rail extending and retracting. To avoid this, in some embodiments, a limit structure for the position of the rolling part 4 is added. Specifically, referring to fig. 4, 8 and 9, a first arc track 321 is formed on the flange plate 32 located at one side of the frame 41, and a second arc track 7 is formed on the fixed track 1 or the movable track 2 located at the other side of the frame 41. And the shapes of the first arc-shaped track 321 and the second arc-shaped track 7 are matched with the balls 42, so that the balls 42 positioned on the frame 41 can be limited between the first arc-shaped track 321 and the second arc-shaped track 7 to roll, and the moving direction of the frame 41 is limited.

It should be noted that, two first arc-shaped rails 321 corresponding to two frame bodies 41 one by one are provided on the flange plate 32, a second arc-shaped rail 7 corresponding to one frame body 41 is provided on the fixed rail 1, and a second arc-shaped rail 7 corresponding to the other frame body 41 is provided on the movable rail 2. And the two first arc-shaped rails 321 are respectively matched with the two second arc-shaped rails 7 to form a space for accommodating the two rolling parts 4.

In some embodiments, referring to fig. 4-6, the flange plate 32 includes a plate body 322, two ends of the plate body 322 perpendicular to the web 31 extend to form an upper plate body 323 and a lower plate body 324 protruding from upper and lower end surfaces of the web 31, and one side of the upper plate body 323 and one side of the lower plate body 324 away from the web 31 are respectively provided with a first arc track 321. The arrangement of the upper plate 323 and the lower plate 324 can form an I-shaped structure between the flange plate 32 and the web plate 31, and the first arc-shaped track 321 is respectively arranged on the upper plate 323 and the lower plate 324, so that mutual interference in the rolling process of the balls 42 on the two frame bodies 41 can be avoided.

In some embodiments, referring to fig. 6, the sides of the upper plate body 323 and the lower plate body 324 facing the web 31 are in smooth transition connection with the web 31 through arc surfaces, so as to increase the connection area at the junction between the upper plate body 323 and the web 31 and further ensure the structural strength of the junction.

It should be noted that the web 31 and the flange plate 32 (including the plate body 322, the upper plate body 323, and the lower plate body 324) are integrally formed.

In some embodiments, referring to fig. 9-10, the movable rail 2 includes a movable rail body 21 arranged parallel to the web 31, two sides of the movable rail body 21 are integrally bent and provided with movable side rails 22 located at the outer side of the upper plate 323, and one side of the movable side rail 22 facing the upper plate 323 is provided with a second arc-shaped rail 7. The sliding of the movable rail 2 from the middle rail 3 can be restrained by the arrangement of the movable rail body 21 and the movable side rail 22. Further, the movable rail body 21 is provided with a limit hook 6 for the support 41 to abut along one side in the telescopic direction, and a movable rail baffle 211 for the middle rail 3 to abut on the other side.

In some embodiments, the fixed rail 1 includes a fixed rail body 11 disposed parallel to the web 31, two sides of the fixed rail body 11 are integrally bent and provided with fixed side rails 12 located outside the lower plate 324, and one side of the fixed side rails 12 facing the lower plate 324 is provided with a second arc-shaped rail 7. The fixed rail 1 is prevented from slipping off the center rail 3 by the arrangement of the fixed rail body 11 and the fixed side rail 12. Further, the fixed rail body 11 is provided with a limit hook 6 for the support 41 to abut along one side of the telescopic direction of the movable rail 2, and a fixed rail baffle 111 for the middle rail 3 to abut on the other side.

It should be noted that, for convenience of description, the cavity formed between the movable rail 2 and the web 31 is referred to as an upper cavity, and the cavity formed between the fixed rail 1 and the web 31 is referred to as a lower cavity.

In some embodiments, referring to fig. 11, the driving part 5 further includes a motor 51 and a screw rod 52, and the motor 51 is disposed in the lower cavity and located at a side of the fixed rail 1 where the fixed rail guard 111 is disposed. The screw rod 52 is located in the lower cavity, and one end thereof is connected with the motor 51, and the other end thereof is mounted on the fixed rail 1 through the mounting seat. The moving part comprises a nut seat 53 which is sleeved on the screw rod 52 in a threaded manner, and the nut seat 53 is arranged on the web plate 31 in a penetrating manner and is fixedly connected with the movable rail 2. The screw rod 52 is driven to rotate by the motor 51, and the rotation of the screw rod 52 is converted into linear movement of the screw rod 53 by the threaded connection of the screw rod 52 and the screw rod 53, so that the linear movement of the movable rail 2 connected with the screw rod 53 is realized.

It should be noted that a gap is left between the end of the nut seat 53 facing the fixed rail 1 and the fixed rail 1.

In some embodiments, a motor base 54 for mounting the motor 51 is disposed on a side of the fixed rail body 11 near the fixed rail plate 111. In order to avoid the limitation of the movement position of the middle rail 3 by the arrangement of the driving part 5, the screw rod 52, the mounting seat, the motor 51 and the motor seat 54 are all arranged in the lower cavity except the nut seat 53, and a gap for the flange plate 32 of the middle rail 3 to freely pass through is reserved between the motor seat 54 and the fixed side rail 12.

In some embodiments, referring to fig. 5, the web 31 is provided with a web slot 311 through which the nut seat 53 passes, two sides of the web slot 311 perpendicular to the moving direction of the nut seat 53 are not in contact with the nut seat 53, and the dimension of the web slot 311 along the moving direction of the nut seat 53 is greater than the dimension of the nut seat 53 along the moving direction thereof.

The arrangement of the web plate slot 311 ensures the direct connection between the nut seat 53 and the movable rail 2, and can limit the moving range of the nut seat 53 on the web plate 31; the two sides of the web plate groove 311 perpendicular to the moving direction of the nut seat 53 are limited to be not in contact with the nut seat 53, so that friction resistance in the moving process of the nut seat 53 can be reduced, and smoothness of the movement of the nut seat 53 is ensured; the dimension of the web slot 311 along the moving direction of the nut seat 53 is limited to be larger than the dimension of the nut seat 53, so that the influence of the web slot 311 on the movement of the nut seat 53 is avoided, and the moving range of the nut seat 53 can be limited.

It should be noted that the rolling portion 4 is generally made of a hard material having good rigidity and strength, such as a metal material, and the middle rail 3 is made of an aluminum alloy or a light alloy, so as to reduce the overall weight of the sliding rail as much as possible while ensuring the structural strength.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. An electric telescopic slide rail, characterized in that: comprises a fixed rail, a movable rail and a middle rail positioned between the fixed rail and the movable rail; wherein,

the middle rail comprises a web plate and flange plates, the flange plates are positioned on two sides of the web plate and form an I-shaped structure with the web plate, and one side, away from the web plate, of each flange plate is connected with the fixed rail and the movable rail through rolling parts;

the fixed rail is equipped with drive portion towards one side of well rail, drive portion includes can follow the moving part that the flexible direction of movable rail moved, the moving part pass the web and with movable rail connects.

2. The motorized telescopic slide of claim 1, wherein: the rolling part comprises two frame bodies which are vertically distributed and are in one-to-one correspondence with the fixed rail and the movable rail, at least one ball arranged in the extending and retracting direction of the movable rail is arranged on each frame body, one side of each ball is in rolling contact with the flange plate, and the other side of each ball is in rolling contact with the fixed rail or the movable rail.

3. The motorized telescopic slide of claim 2, wherein: the flange plate is provided with stop blocks which are arranged in one-to-one correspondence with the frame bodies along the two ends of the movable rail in the extending direction, one end of the frame body can be abutted to the corresponding stop block, and the other end of the frame body can be abutted to the corresponding limit hook of the fixed rail or the movable rail.

4. The motorized telescopic slide of claim 2, wherein: one side of the flange plate, which is far away from the web plate, is also provided with a first arc track which is arranged in one-to-one correspondence with the frame body, and the first arc track is matched with the shape of the ball.

5. The motorized telescopic slide of claim 4, wherein: the flange plate comprises a plate body, wherein two ends of the plate body perpendicular to the web plate direction respectively extend to form an upper plate body and a lower plate body, and one sides of the upper plate body and the lower plate body, which are far away from the web plate, are respectively provided with a first arc-shaped track.

6. The motorized telescopic slide of claim 5, wherein: the upper plate body and the lower plate body are connected with the web plate in a smooth transition mode through arc surfaces on one sides of the web plate facing the upper plate body and the lower plate body.

7. The motorized telescopic slide of claim 2, wherein: and the fixed rail and the movable rail are respectively provided with a second arc-shaped rail for rolling contact of the balls.

8. The motorized telescopic slide according to any one of claims 1-7, wherein: the driving part also comprises a motor and a screw rod, and the motor is arranged on the fixed rail in a built-in way; the screw rod is positioned in a lower cavity formed by the web plate and the fixed rail, one end of the screw rod is connected with the motor, and the other end of the screw rod is installed on the fixed rail through the installation seat.

9. The motorized telescopic slide of claim 8, wherein: the movable piece comprises a nut seat which is sleeved on the screw rod through threads, and one end, away from the fixed rail, of the nut seat is connected with the movable rail.

10. The motorized telescopic slide of claim 1, wherein: the web plate is provided with a web plate slot for the moving piece to pass through, and the two sides of the web plate slot perpendicular to the moving direction of the moving piece are not contacted with the moving piece.