CN213920748U - Seat long slide rail and seat with same - Google Patents

Abstract

The utility model relates to a long slide rail of seat and seat that has such long slide rail of seat, including left side slide rail and right slide rail, it has respectively with sliding connection's each other last slide rail and lower slide rail, wherein, left side slide rail and right slide rail still are respectively including ball circulating device, ball circulating device fixes under the state of assembly go up the slide rail in the face of the lateral wall department of slide rail down and hold go up the slide rail the lateral wall with between the lateral wall of slide rail down, with the help of ball circulating device's ball makes go up the slide rail can for slide rail carries out relative slip down. The seat long slide rail has a simple structure and can prevent the collision of internal parts thereof to generate noise under the condition of road bump or external force.

Description

Seat long slide rail and seat with same

Technical Field

The utility model relates to a long slide rail of seat and have seat of such long slide rail of seat.

Background

In the conventional vehicle seat, electric adjustment in the front-rear direction has gradually become an indispensable existence. For MPV vehicles, the two-row and three-row seats usually use a long seat track structure to achieve adjustment of the seats in the front-rear direction.

From the prior art, a long seat rail is known, which comprises an upper rail and a lower rail and a locking mechanism. The upper slide rail is formed by combining two parts and is fixed at the seat framework through two threaded fasteners at the end parts, wherein the two parts of the upper slide rail can wrap the threaded fasteners in the height direction. In addition, in the assembled state, the side wall of the upper rail is partially accommodated in the lower rail, and a plurality of rolling bearings are arranged outside the side wall of the upper rail, so that smooth sliding of the upper rail relative to the lower rail is achieved by the rolling bearings. In order to facilitate rolling of the rolling bearing, the rolling bearing has a certain clearance with respect to the side wall of the lower rail, specifically, a certain clearance in the up-down and left-right directions.

SUMMERY OF THE UTILITY MODEL

The object of the invention is to provide a long seat rail with an improved structure.

According to the utility model discloses a long slide rail of seat that one aspect provided, including left slide rail and right slide rail, it has respectively with sliding connection's each other last slide rail and lower slide rail, wherein, left side slide rail and right slide rail still include ball circulating device respectively, ball circulating device fixes under the state of assembly the lateral wall department of the slide rail is in down in the face of going up the slide rail and hold go up the slide rail the lateral wall with between the lateral wall of lower slide rail, with the help of ball circulating device's ball makes go up the slide rail can for lower slide rail carries out the relative slip.

According to an aspect of the present invention, there is provided a seat long slide rail, wherein the ball circulation device includes an upper cover plate, a lower cover plate, and a ball holder, which are connected to each other, and the upper cover plate and the ball holder jointly form a first raceway and/or the lower cover plate and the ball holder jointly form a second raceway, in which a plurality of balls are accommodated, and at least one of the plurality of balls is in contact with the lower slide rail and rolls on the upper slide rail when the upper slide rail slides with respect to the lower slide rail.

According to the utility model discloses a long slide rail of seat that an aspect provided, go up backplate, lower backplate and ball holder and pass through the mode of joint and fix each other.

According to the utility model discloses a long slide rail of seat that one aspect provided go up the backplate treat with the tip department that the backplate is connected down is provided with dentate joint portion, correspondingly the tip department of backplate is provided with shape assorted draw-in groove and is used for holding joint portion.

According to the utility model discloses a long slide rail of seat that an aspect provided, ball circulating device passes through the mode of joint to be fixed go up the lateral wall department of slide rail, it has the turn-ups in lateral wall department and is used for the card to go into to go up the slide rail among the ball circulating device.

The structure of the seat long slide rail is simple, and the collision of internal parts under the condition of road bump or external force can be prevented, so that noise is generated.

Furthermore, the invention also provides a seat having a seat cushion and a backrest and such a long seat rail, which can therefore have the advantages described above.

Drawings

The invention is explained in more detail with reference to the drawings, in which:

fig. 1 shows a long seat slide according to the invention in the assembled state;

fig. 2 shows a long seat rail according to the invention in an exploded view;

fig. 3 shows a detail of the upper rail in an enlarged view;

FIG. 4 shows a ball circulation arrangement of a long seat track in a perspective view;

figure 5 shows an exploded view of the ball circulation device according to figure 4;

fig. 6 shows the balls in a rolling state;

fig. 7 shows the left slide rail in cross section in the assembled state.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

With reference to fig. 1 and 2, the long seat slide comprises a left slide rail 1, a right slide rail 2 and an unlocking assembly 3. The left and right slide rails 1, 2 comprise slidably connected upper and lower slide rails 11, 21, 12, 22, respectively, and the above-mentioned unlocking assembly 3 is capable of fixing the upper and lower slide rails in a determined position and releasing the fixation between the two slide rails when adjustment of the seat is required. In addition, the long seat rail has ball circulation devices 4 arranged in pairs, which are fastened to the side walls of the upper rails 11, 21 facing the lower rails 12, 22 and are accommodated in the assembled state between the mutually opposite side walls of the upper and lower rails, by means of which relative sliding between the upper and lower rails can be achieved.

Referring to fig. 3, the upper rail 11 has an "n" -shaped cross section (which can also be said to be "Ω"). I.e. the upper running rail 11 comprises a top wall which is arranged substantially horizontally and side walls which extend downwards from the top wall and which have at their free ends, that is to say at their lower ends, bent walls which are bent upwards on the outside. This configuration of the upper slide rail 11 reduces the height of the long seat slide to some extent, compared to a conventional upper slide rail that is welded in two parts and that is wrapped in height with threaded fasteners for mounting at the seat frame. According to the utility model discloses an go up slide rail 11, 21 because the structure is simpler and can form by the punching press of integral type, its height and width can be adjusted in a flexible way as required in manufacturing process. A plurality of threaded holes are formed in the top walls of the upper slide rails 11 and 21 and used for being directly fixed to the seat frame through threaded fasteners.

In addition, taking the lower rail 12 of the left rail as an example, it is similarly "U" shaped, i.e., the lower rail 12 has a substantially horizontal bottom wall and side walls extending upward or obliquely upward from the bottom wall (see fig. 7). From somewhere on the side walls (e.g., at half of their height), the side walls of the lower slide rail 12 are bent outward to form an arc-shaped portion 121 resembling an "ear profile" with the center of the arc-shaped portion being inside the lower slide rail 12. The arc-shaped portion 121 extends substantially vertically downward when it extends to the highest point to form a vertical portion 122 capable of preventing the ball circulation device 4 accommodated therein from being deviated out to some extent. The lower rails 12, 22 are secured to the vehicle body floor by threaded fasteners on the bottom wall.

According to fig. 4 and 5, the ball circulation device 4 for mounting between the side walls of the upper and lower running rails can comprise an upper guard plate 41, a lower guard plate 42 and a ball cage 43, which are connected to one another, for example in a snap-fit manner. Specifically, a toothed clamping portion 411 is provided at an end portion of the upper protection plate 41 for connecting with the lower protection plate 42, and correspondingly, a clamping groove 421 with a matched shape is provided at the lower protection plate 42 for accommodating the clamping portion 411. In addition, claws are provided at the sides of the upper and lower shields 41 and 42 for connection with the ball cage 43, respectively, for engagement into deepened portions of the ball cage 43.

In addition, the ball circulation device 4 is likewise arranged outside the side wall of the upper running rail 11 of the left running rail, for example, in a snap-in manner, i.e. the upper running rail 11 has outwardly inclined flanges 111 for snapping into the ball circulation device 4, which makes the mounting and dismounting of the ball circulation device simpler. In the assembled state, the ball circulation device can have an outer shape that substantially corresponds to the contour of the arcuate portion of the lower slide rail.

In order to achieve a smoother sliding movement between the upper and lower slide rails, a plurality of balls 44 are accommodated in a first raceway 431 formed by the upper guard 41 and the ball cage 43, and/or a plurality of balls 44 are accommodated in a second raceway 432 formed by the lower guard 42 and the ball cage 43. The ball circulation device shown in the drawings has a first raceway 431 and a second raceway 432.

Taking as an example the balls 44 in the second raceway 432 shown in fig. 6, there are nine balls which are arranged uniformly around the central strip-shaped projection and can roll therein. In the assembled state, the outer periphery of the ball circulation device 4 has a certain clearance from the inside of the lower slide rails 12, 22 so that the ball circulation device 4 as a whole moves together with the upper slide rails 11, 21. During the sliding of the upper slide rails 11, 21, at least one of the balls 44 is in contact with the lower slide rails 12, 22, more precisely in contact with the lower slide rails 12, 22 in an interference fit and rolls there. Referring to fig. 6 and 7, the balls at the lower end of the second raceway 432 and the balls at the upper end of the first raceway 431 are in interference contact with the inside of the lower rail 12 and roll at the same time. Compared with the conventional long seat slide rail, a certain gap exists between the rolling bearing and the lower slide rail, and the rolling bearing collides with the lower slide rail and generates continuous knocking abnormal sound which can make passengers uncomfortable under the condition that the road jolts or the slide rail is subjected to external force, according to the utility model discloses a long seat slide rail, the above-mentioned arrangement mode eliminates the gap and can effectively avoid the generation of collision and abnormal sound.

Furthermore, the present invention also includes a seat having a seat cushion and a backrest and a long seat track according to any one or more of the above embodiments, wherein the technical features and effects thereof are as described above and thus not described herein again.

It should be understood that all the above embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which may occur to those skilled in the art upon reading the teachings of the present invention, are intended to be within the scope of the appended claims.

Claims (6)

1. The long seat sliding rail comprises a left sliding rail and a right sliding rail which are respectively provided with an upper sliding rail and a lower sliding rail which are connected with each other in a sliding manner, and is characterized in that the left sliding rail and the right sliding rail also respectively comprise a ball circulating device which is fixed at the position of the side wall of the upper sliding rail facing the lower sliding rail in an assembled state and is accommodated between the side wall of the upper sliding rail and the side wall of the lower sliding rail, and the upper sliding rail can slide relative to the lower sliding rail by means of balls of the ball circulating device.

2. The long seat slide according to claim 1, wherein the ball circulation device includes an upper guard, a lower guard, and a ball cage connected to each other, a plurality of balls are accommodated in a first raceway formed by the upper guard and the ball cage and/or a second raceway formed by the lower guard and the ball cage, and at least one of the plurality of balls is in contact with the lower slide and rolls upward when the upper slide slides with respect to the lower slide.

3. The long seat slide of claim 2, wherein the upper and lower guards and the ball retainer are fixed to each other by snap-fitting.

4. The seat length slide of claim 3, wherein a toothed snap-in portion is provided at the end of the upper cover plate to be connected with the lower cover plate, and correspondingly a snap-in groove of matching shape is provided at the end of the lower cover plate for receiving the snap-in portion.

5. The long seat slide of claim 1, wherein the ball circulation device is fixed to the side wall of the upper slide by snap-fitting, and the upper slide has a flange at the side wall for snap-fitting into the ball circulation device.

6. Seat, characterized in that it has a seat cushion and a backrest and a long seat slide according to any one of claims 1 to 5.

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