Automobile seat backrest rotation adjusting mechanism

Abstract

The utility model discloses an automobile seat backrest rotation adjusting mechanism which comprises two sets of supports and a backrest installed on the two sets of supports, the supports are used for being fixedly assembled on an automobile body floor or the rear end of a seat frame, and the automobile seat backrest rotation adjusting mechanism is characterized in that two sides of the lower portion of the backrest are respectively provided with a backrest side plate; the two backrest side plates are rotationally connected to the two groups of supports respectively; one of the supports is provided with an arc-shaped tooth section, and a gear meshed with the arc-shaped tooth section is rotationally mounted on one of the backrest side plates; the circle center corresponding to the arc-shaped tooth section coincides with the rotating center line of the backrest side plate, and a motor for driving the gear to rotate is installed on the backrest side plate. The small-angle adjusting device has the advantages of being simple in structure, low in cost and capable of being suitable for the application scene of small-angle adjustment of the seat backrest.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat parts, and particularly relates to a backrest rotating adjusting mechanism of an automobile seat. BACKGROUND

[0002] The backrest adjusting function of an automobile seat is an important component for improving the comfort of riding. At present, the mainstream backrest adjusting system of an automobile seat on the market usually adopts a design scheme of a backrest double-side angle adjuster and a motor combination adjustment regardless of the size of the adjusting stroke. This design provides power through a motor to drive the synchronous movement of the left and right angle adjusters, thereby realizing the accurate adjustment of the angle of the backrest of the seat. For the case of small-angle adjustment of the automobile seat, although this scheme can meet the functional requirements, the electric single monotone static strength is insufficient, so it is double, the cost is higher, and its wide application in economic vehicles is limited.

[0003] Therefore, it is urgent to develop a backrest adjusting mechanism that can meet the functional requirements and significantly reduce the cost. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a backrest rotating adjusting mechanism of an automobile seat, which is low in cost and suitable for the application scenario of small-angle adjustment of the backrest of the seat.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A backrest rotating adjusting mechanism of an automobile seat comprises two groups of supports and a backrest installed on the two groups of supports, the support is used for fixedly assembling on the floor of the vehicle body or the rear end of the seat frame, each of the two sides of the lower part of the backrest is provided with a backrest side plate, and the two backrest side plates are rotationally connected to the two groups of supports, respectively; one of the supports is provided with an arc-shaped tooth segment, and one of the backrest side plates is rotationally installed with a gear meshing with the arc-shaped tooth segment.

[0007] The center of the arc-shaped tooth segment corresponds to the rotation center line of the backrest side plate, and the backrest side plate is installed with a motor for driving the rotation of the gear.

[0008] By adopting the above structure, the seat adopts gear transmission, which is simple in structure, stable and reliable in transmission, can adapt to the application scenario of small-angle adjustment of the backrest, is low in cost, and can be applied to various automobile seat designs.

[0009] As preferred: the backrest side plate outside is fixedly provided with a bearing plate, the support is located between the bearing plate and the backrest side plate, the motor is fixedly assembled on the inside of the backrest side plate through a motor support, the gear is fixedly sleeved on the output shaft of the motor, the bearing plate is provided with a supporting hole, and the output shaft of the motor is supported in the supporting hole through the gear. With the above structure, the installation is convenient, and the supporting strength and rotation stability of the gear are improved.

[0010] As preferred: the support is provided with an arc-shaped groove, the arc-shaped groove is provided with the arc-shaped tooth segment on the upper side wall, and the gear is located in the arc-shaped groove. With the above structure, the gear is conveniently installed.

[0011] As preferred: the arc-shaped groove is provided with an avoiding groove at both ends and adapted to the shape of the gear, and the avoiding groove is used for avoiding the gear. With the above structure, the interference of the gear in the rotation process is avoided, and the rotation smoothness of the gear is improved.

[0012] As preferred: the support is fixedly provided with a thickened plate, the thickened plate is provided with a matching groove, the matching groove is completely coincided with the arc-shaped groove, the matching groove is provided with the arc-shaped tooth segment on the upper side wall, the matching groove is provided with the avoiding groove at both ends, and the gear is also located in the matching groove. With the above structure, the structural stability is increased, and the strength is improved.

[0013] As preferred: the support and the bearing plate are provided with a pad, and the pad is fixedly arranged on the bearing plate. With the above structure, the structural strength is increased, and the rotation is more smooth.

[0014] As preferred: the outer end of the output shaft of the motor is sleeved with a nut, a mounting hole intersecting with the supporting hole is arranged beside the supporting hole, and the mounting hole is adapted to the nut. With the above structure, the installation is convenient.

[0015] Compared with the prior art, the automobile seat backrest rotation adjusting mechanism has the advantages that:

[0016] 1. The automobile seat backrest rotation adjusting mechanism has the advantages of simple structure, easy manufacturing, low cost, and especially being suitable for the rear seat of a vehicle which only needs small-angle adjustment.

[0017] 2. The gear transmission principle is adopted, the stability and reliability of the backrest rotation are ensured, the transmission ratio is large, the accurate adjustment of the backrest angle can be realized, and the comfort of riding is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a structural schematic view of the utility model;

[0019] Figure 2 The figure is a schematic view of the arc-shaped groove 2b;

[0020] Figure 3 is a schematic view showing the support hole 6a and the mounting hole 6b;

[0021] Figure 4 is a schematic view showing the support hole 6a and the mounting hole 6b along Figure 3 is a sectional view along A-A. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the embodiments and the drawings.

[0023] As shown in Figure 1 and Figure 2 , a rotary adjusting mechanism of a backrest of an automobile seat comprises two sets of supports 2 and a backrest 1 mounted on the two sets of supports 2, wherein the support 2 is used for being fixedly assembled on the floor of a vehicle body or the rear end of a seat frame. The lower part of the backrest 1 is provided with a backrest side plate 11 on each side, and the two backrest side plates 11 are respectively rotatably connected to the two sets of supports 2, so that the backrest 1 can rotate relative to the support 2. One of the supports 2 is provided with an arc-shaped tooth segment 2a, and a gear 3 is rotatably mounted on the backrest side plate 11 on the same side of the support 2, and the gear 3 is engaged with the arc-shaped tooth segment 2a. The center of the arc-shaped tooth segment 2a corresponds to the rotation center line of the backrest side plate 11, and the backrest side plate 11 is provided with a motor 4 for driving the rotation of the gear 3. When the gear 3 rotates, the gear 3 is engaged with the arc-shaped tooth segment 2a, and the backrest 1 is driven to rotate relative to the support 2, so as to realize the adjustment of the angle of the backrest 1.

[0024] As shown in Figure 2 and Figure 4 , an arc-shaped groove 2b is formed on the support 2, the upper side wall of the arc-shaped groove 2b has an arc-shaped tooth segment 2a, and the two ends of the arc-shaped groove 2b are provided with avoiding grooves 2b1, and the gear 3 is located in the arc-shaped groove 2b. The shape of the avoiding groove 2b1 is adapted to the movement track of the gear 3, which is used for avoiding the interference of the gear 3 in the rotation process, and improves the smoothness of the rotation of the gear 3. The support 2 is fixedly provided with a thickened plate 5 for enhancing the structural strength, the thickened plate 5 is provided with a matching groove 5a, and the matching groove 5a is completely coincided with the arc-shaped groove 2b. Moreover, the upper side wall of the matching groove 5a has an arc-shaped tooth segment 2a, and the two ends are provided with avoiding grooves 2b1, and the gear 3 is also located in the matching groove 5a.

[0025] As shown in Figure 4As shown, the backrest side plate 11 outside is fixedly installed with a bearing plate 6. The bearing plate 6 and the backrest side plate 11 have an installation gap therebetween, the support 2 is located between the bearing plate 6 and the backrest side plate 11, the motor 4 is fixedly assembled in the inside of the backrest side plate 11 through a motor support 9, the gear 3 is fixedly sleeved on the output shaft of the motor 4, the bearing plate 6 is provided with a supporting hole 6a, the output shaft of the motor 4 passes through the gear 3 and is supported in the supporting hole 6a, the installation is convenient, and the supporting strength and the rotation stability of the gear 3 can be improved. In order to reduce the friction between the support 2 and the bearing plate 6, the gasket 7 is arranged between the support 2 and the bearing plate 6, and the gasket 7 is fixedly arranged on the bearing plate 6, so that the rotation smoothness can be improved.

[0026] As shown in Figure 3 and Figure 4 the output shaft of the motor 4 is sleeved with a nut 8, the supporting hole 6a is provided with a mounting hole 6b intersecting with the supporting hole 6a, the size of the supporting hole 6a is adapted to the output shaft of the motor 4, the size of the mounting hole 6b is adapted to the nut 8 and is larger than the size of the supporting hole 6a, when the output shaft of the motor 4 is supported in the supporting hole 6a, the nut 8 is clamped outside the bearing plate 6, so that the installation of the gear 3 is convenient.

[0027] As shown in Figure 2 the motor 4 drives the gear 3 to rotate, the gear 3 is engaged with the arc-shaped tooth segment 2a to drive, since the support 2 is fixed on the vehicle body, the backrest 1 is rotatably installed with the support 2, in the process of the gear 3 engagement, the backrest 1 is subjected to a counter thrust to rotate relative to the support 2. This transmission mode is simple, compact, has a large transmission ratio, can realize small-angle adjustment of the backrest 1, and has low cost, and can be applied to various automobile seat designs.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without departing from the purpose and claims of the present application. Such changes fall within the scope of the present application.

Claims

1. A mechanism for adjusting the rotation of the backrest of a car seat, comprising two sets of supports (2) and a backrest (1) mounted on the two sets of supports (2), the supports (2) being intended to be fixed to the floor of the car body or to the rear end of the seat frame, characterized in that: Two backrest side plates (11) are arranged on the lower part of the backrest (1), and the two backrest side plates (11) are respectively rotationally connected to two groups of the supports (2); one of the supports (2) is provided with an arc-shaped tooth segment (2a), and one of the backrest side plates (11) is rotationally provided with a gear (3) engaged with the arc-shaped tooth segment (2a). The center of the arc-shaped tooth segment (2a) coincides with the rotation center line of the backrest side plate (11), and the backrest side plate (11) is provided with a motor (4) driving the rotation of the gear (3).

2. The mechanism according to claim 1, wherein: The backrest side plate (11) is fixedly provided with a bearing plate (6) outside, the support (2) is located between the bearing plate (6) and the backrest side plate (11), the motor (4) is fixedly assembled in the backrest side plate (11) through a motor support (9), the gear (3) is fixedly sleeved on the output shaft of the motor (4), the bearing plate (6) is provided with a supporting hole (6a), and the outer end of the output shaft of the motor (4) passes through the gear (3) and is supported in the supporting hole (6a).

3. The mechanism according to claim 1, wherein: The support (2) is provided with an arc-shaped groove (2b), and the arc-shaped tooth segment (2a) is arranged on the upper side wall of the arc-shaped groove (2b).

4. The mechanism according to claim 3, wherein: The arc-shaped groove (2b) is provided with an avoiding groove (2b1) adapted to the shape of the gear (3) at both ends, and the avoiding groove (2b1) is used for avoiding the gear (3).

5. The mechanism according to claim 4, wherein: The support (2) is fixedly provided with a thickened plate (5), the thickened plate (5) is provided with a matching groove (5a), the matching groove (5a) is completely coincided with the arc-shaped groove (2b), and the arc-shaped tooth segment (2a) is arranged on the upper side wall of the matching groove (5a), the avoiding groove (2b1) is arranged at both ends of the matching groove (5a), and the gear (3) is also located in the matching groove (5a).

6. The mechanism according to claim 2, wherein: The support (2) and the bearing plate (6) are provided with a cushion block (7), and the cushion block (7) is fixedly arranged on the bearing plate (6).

7. The mechanism according to claim 2, wherein: The outer end of the output shaft of the motor (4) is sleeved with a nut (8), the supporting hole (6a) is provided with a mounting hole (6b) intersecting with the supporting hole (6a) beside the supporting hole (6a), and the mounting hole (6b) is adapted to the nut (8).

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