A slide rail assembly and a seat translation drive mechanism

Abstract

The present invention relates to the technical field of vehicle seats, and particularly relates to a slide rail assembly and a seat translation driving mechanism, which include a base, a seat bracket, a first rail and a second rail that are relatively slidably arranged, a driving member and a transmission member. The base is fixedly arranged on the vehicle body; the seat bracket is movably arranged on the base; the first rail is slidably connected to the base, and the second rail is fixedly connected to the seat bracket; the driving member is connected to the first rail and drives it to slide relative to the base; the transmission member is connected between the first rail and the second rail, so that the second rail slides relative to the first rail. The slide rail assembly of the present invention adopts a segmented first rail and second rail, which increases the sliding stroke of the seat bracket and translates the seat to the aisle position for rotation, and is particularly suitable for the situation where the seat spacing is small.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly relates to a slide rail assembly and a seat translation drive mechanism. Background Art

[0002] In the prior art, the seats on vehicles have changed from fixed seats to rotatable seats that can be replaced in direction. During the position conversion process of the seats, sliding and rotation are required. Currently, the mechanism for realizing the sliding of the seats is generally a crank mechanism, such as a crank-slider self-locking mechanism and an electric rotating seat self-locking device disclosed in the patent with the publication number CN118770026A, which realizes the sliding drive of the seat by using the crank-slider method. However, this method is still limited by the length of the slide rail. Especially in the case where the distance between adjacent seats is relatively narrow, insufficient sliding stroke will cause interference in the rotation of the seat. Summary of the Invention

[0003] In order to solve the problem of interference in rotation caused by insufficient sliding stroke of the electric seat in the prior art, the present invention provides a slide rail assembly and a seat translation drive mechanism that increase the sliding stroke.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A slide rail assembly includes:

[0006] A base, which is fixedly arranged on the vehicle body;

[0007] A seat bracket, which is movably arranged on the base;

[0008] A first rail and a second rail that are relatively slidably arranged, the first rail is slidably connected to the base, and the second rail is fixedly connected to the seat bracket;

[0009] A driving member, which is connected to the first rail and drives it to slide relative to the base;

[0010] A transmission member, which is connected between the first rail and the second rail to make the second rail slide relative to the first rail.

[0011] Further, the transmission member includes a gear rotatably arranged on the first rail, a first rack is fixed on the base, a second rack is fixed on the seat bracket, and the gear meshes between the first rack and the second rack.

[0012] Further, the second rail includes a first inner guide rail, a first outer guide rail is slidably fitted with the first inner guide rail, a second inner guide rail is fixed on the base, a second outer guide rail is slidably fitted with the second inner guide rail, and the first outer guide rail and the second outer guide rail are fixed and form the first rail.

[0013] A seat translation driving mechanism includes the above-mentioned slide rail assembly. The driving member includes a swing rod, which is rotatably connected to the seat bracket. The first end of the swing rod is connected to a power mechanism that drives its swing, and the second end of the swing rod is in transmission connection with the first rail and drives the first rail to slide relative to the base.

[0014] Furthermore, the power mechanism includes a driving disk rotatably arranged on the seat bracket. The driving disk is provided with a variable-diameter track, and the second end of the swing rod moves along the variable-diameter track.

[0015] Furthermore, the swing rod is provided with a chute along its length direction. A rotating member adapted to its width is arranged in the chute, and the rotating member is rotatably installed on the first rail.

[0016] Furthermore, a mounting seat is fixed on the first rail, and both the gear and the rotating member are rotatably arranged on the mounting seat.

[0017] Furthermore, the first outer guide rail and the second outer guide rail are fixedly connected through the mounting seat. The mounting seat not only serves to mount the gear and the rotating member, but also can fixedly connect the first outer guide rail and the second outer guide rail, with good functionality and good overall structural integration.

[0018] Furthermore, the first outer guide rail and the second outer guide rail are arranged back to back. In this way, the first inner guide rail and the second inner guide rail are symmetrically arranged on both sides of the first rail, and the space layout is reasonable.

[0019] Furthermore, the rotating member is a first bearing. The width of the chute matches the outer diameter of the first bearing, and semicircular grooves matching the outer diameter of the first bearing are provided at both ends of the chute. The semicircular grooves are in contact with the first bearing, and the movement process is smoother and more stable with less noise.

[0020] Beneficial effects: (1) The slide rail assembly of the present invention adopts a segmented first rail and second rail, which increases the sliding stroke of the seat bracket, and translates the seat to the aisle position for rotation, especially suitable for the situation where the seat spacing is small; (2) Through the transmission mode of gear and rack, the relative sliding of the first rail and the second rail is realized, with a simple structure, easy to implement, and high transmission accuracy; (3) The sliding of the first rail is realized by the swing of the swing rod. The swing rod can be arranged on the seat bracket, and a power mechanism is connected to the first end of the swing rod, making reasonable use of space. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the slide rail assembly of the present invention;

[0023] Figure 2 Front structural schematic diagram of the seat translation drive mechanism of the present invention;

[0024] Figure 3 Reverse structural schematic diagram of the seat translation drive mechanism of the present invention;

[0025] Figure 4 Structural schematic diagram of the seat translation drive mechanism of the present invention with part of the base omitted;

[0026] Figure 5 Structural schematic diagram of the mounting seat.

[0027] 1. Base, 2. Seat bracket, 3. Gear, 4. First rack, 5. Second rack, 6. First inner guide rail, 7. First outer guide rail, 8. Second inner guide rail, 9. Second outer guide rail, 10. Swing rod, 101. Chute, 11. Driving disc, 111. Variable diameter track, 12. Rotating member, 13. Mounting seat, 14. Mounting frame. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0030] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description. Without contrary statements, these orientation terms do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0032] For ease of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used here to describe the spatial positional relationships of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0033] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0034] Such as Figure 1, is a slide rail assembly of the present invention, including a base 1, a seat bracket 2, a first rail, a second rail, a driving member and a transmission member, the base 1 is fixedly arranged on the vehicle body; the seat bracket 2 is movably arranged on the base 1, in addition, the seat bracket 2 is also provided with a motor and other devices for driving the main shaft of the seat to rotate, which are not repeated here; the first rail is slidably connected to the base 1, the second rail is fixedly connected to the seat bracket 2, and the second rail is slidably connected to the first rail; the driving member is connected to the first rail and drives it to slide relative to the base 1; the driving member can be a separately arranged motor or cylinder and other devices, which are installed on the base and drive the first rail to move, and can also be driven by a connecting rod and other structures.

[0035] The transmission member is connected between the first rail and the second rail so that the second rail slides relative to the first rail. The transmission member may be a cylinder. Preferably, the transmission member includes a gear 3 rotatably arranged on the first rail, a first rack 4 is fixed on the base 1, a second rack 5 is fixed on the seat support 2, and the gear 3 is meshed between the first rack 4 and the second rack 5.

[0036] The second rail includes a first inner rail 6, which is slidably matched with a first outer rail 7, a second inner rail 8 is fixed on the base 1, and the second inner rail 8 is slidably matched with a second outer rail 9, and the first outer rail 7 and the second outer rail 9 are fixed to form the first rail. In order to facilitate the setting of the positions of the first rack 4 and the second rack 5, the first outer rail 7 and the second outer rail 9 are arranged back to back.

[0037] like Figures 2 - 5 , is a seat translation drive mechanism of the present invention, including the above-mentioned slide rail assembly. In this embodiment, the driving member includes a rocker arm 10, which is rotatably connected to the seat bracket 2. The first end of the rocker arm 10 is connected to a power mechanism that drives it to swing, and the second end of the rocker arm 10 is transmission-connected to the first rail and drives the first rail to slide relative to the base 1.

[0038] In order to facilitate the connection between the swing rod 10 and the seat bracket 2, a mounting frame 14 can be fixed on the seat bracket 2, and the swing rod 10 is rotatably connected to the mounting frame 14. The rotation center of the swing rod 10 is as follows: Figure 3 and Figure 4 Point O is shown.

[0039] The power mechanism for driving the swing rod 10 to swing may include a motor. The output end of the motor may be connected to a rotating arm, and the rotating arm is in transmission connection with the swing rod 10 to achieve the swing of the swing rod 10. As another embodiment of the present invention, the power mechanism includes a driving disk 11 rotatably arranged on the seat bracket 2. A variable-diameter track 111 is provided on the driving disk 11, and the second end of the swing rod 10 moves along the variable-diameter track 111. A sliding groove 101 is provided along the length direction of the swing rod 10. A rotating member 12 adapted to its width is provided in the sliding groove 101, and the rotating member 12 is rotatably installed on the first rail. As an embodiment, the rotating member 12 is a first bearing. The width of the sliding groove 101 matches the outer diameter of the first bearing, and semicircular grooves matching the outer diameter of the first bearing are provided at both ends of the sliding groove 101. To save costs, reduce friction and noise, a second bearing may be installed on the swing rod 10. The outer ring of the second bearing contacts the two side walls of the variable-diameter track 111 and rolls along the variable-diameter track 111.

[0040] A mounting seat 13 is fixed on the first rail. The gear 3 and the rotating member 12 are both rotatably arranged on the mounting seat 13. The first outer guide rail 7 and the second outer guide rail 9 are fixedly connected through the mounting seat 13.

[0041] Working principle:

[0042] Driving devices such as a motor drive the driving disk 11 to rotate, and the swing rod 10 swings, driving the first rail to slide relative to the base 1. At the same time, the gear 3 meshes with the first rack 4 and the second rack 5, and the second rail slides relative to the first rail. Therefore, the sliding stroke of the seat bracket 2 is the sum of the strokes of the first rail and the second rail, so that the sliding stroke of the seat bracket 2 is increased.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A seat translation drive mechanism, characterized in that: The slide rail assembly comprises a base (1), a seat support (2), a driving member and a transmission member, wherein the base (1) is fixedly arranged on the vehicle body; the seat support (2) is movably arranged on the base (1); a first rail and a second rail are arranged to slide relative to each other, the first rail is slidably connected to the base (1), and the second rail is fixedly connected to the seat support (2); the driving member is connected to the first rail and drives it to slide relative to the base (1); and the transmission member is connected between the first rail and the second rail, so that the second rail slides relative to the first rail; The transmission member comprises a gear (3) rotatably arranged on the first rail, a first rack (4) is fixed on the base (1), a second rack (5) is fixed on the seat support (2), the gear (3) is meshed between the first rack (4) and the second rack (5), the second rail comprises a first inner guide rail (6), the first inner guide rail (6) is slidably matched with a first outer guide rail (7), a second inner guide rail (8) is fixed on the base (1), the second inner guide rail (8) is slidably matched with a second outer guide rail (9), and the first outer guide rail (7) and the second outer guide rail (9) are fixed and constitute the first rail; The driving member comprises a swing rod (10), the swing rod (10) being rotatably connected to the seat bracket (2), a first end of the swing rod (10) being connected to a power mechanism for driving the swing rod, and a second end of the swing rod (10) being transmission-connected to the first rail and driving the first rail to slide relative to the base (1); The swing rod (10) is provided with a slide groove (101) along its length direction, and a rotating member (12) adapted to its width is provided in the slide groove (101), and the rotating member (12) is rotatably mounted on the first rail; A mounting seat (13) is fixed on the first rail, and the gear (3) and the rotating member (12) are both rotatably arranged on the mounting seat (13); The first outer guide rail (7) and the second outer guide rail (9) are fixedly connected via the mounting seat (13).

2. The seat translation drive mechanism according to claim 1, wherein: The power mechanism comprises a drive plate (11) rotatably arranged on a seat support (2), a diameter-changing track (111) being provided on the drive plate (11), and the second end of the rocker arm (10) moves along the diameter-changing track (111).

3. The translation of a seat translation drive mechanism according to claim 1, characterized in that: The first outer guide rail (7) and the second outer guide rail (9) are arranged opposite to each other.

4. A seat translation drive mechanism according to claim 1, characterized in that: The rotating member (12) is a first bearing, the width of the slide groove (101) matches the outer diameter of the first bearing, and both ends of the slide groove (101) are provided with semicircular grooves that match the outer diameter of the first bearing.

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