Electrically adjustable rear hip support structure for car seats

Abstract

The present invention discloses an electrically adjustable rear hip support structure for a car seat, comprising: a backrest; a back support body installed inside the backrest, which is used to support the back of a user; a coccyx support assembly rotatably installed at the lower end of the backrest; a driving mechanism for automatically driving the coccyx support assembly to rotate; the upper part of the coccyx support assembly is connected to the back support body, and under the action of the driving mechanism, the upper part of the coccyx support assembly can move forward relative to the backrest and pull the lower part of the back support body to move forward. The beneficial effect of the present invention is that it can support the area between the waist and buttocks of the user according to the needs of the user, which helps to improve the comfort level of the seat.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to an electrically adjustable buttocks rear support structure of an automobile seat. Background Art

[0002] The comfort of seats plays a vital role in the user's driving experience. Nowadays, both automobile manufacturers and consumer terminals have put forward more stringent requirements on the comfort of car seats.

[0003] To improve the comfort of car seats, mature technical means include seat massage, back massage, flexible support and lumbar support. Although these technical means have improved the seat driving experience to a certain extent and relieved the muscle fatigue of passengers in the hips, waist, shoulders and back areas, after the user sits on the seat, the area between the waist and hips (hip joint, coccyx) is still in a non-supported state. If this area is suspended for a long time, it will also cause the user to feel tired from sitting for a long time. The comfort needs to be improved urgently. Summary of the invention

[0004] In view of this, the present invention provides an electrically adjustable rear hip support structure for a car seat, which can support the area between the waist and hips of the user according to the needs of the user, thereby helping to improve the comfort level of the seat.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] An electrically adjustable rear hip support structure for a car seat comprises:

[0007] Backrest;

[0008] a back support body installed inside the backrest, used to support the back of the user;

[0009] Rotating a coccyx support assembly mounted at the lower end of the backrest;

[0010] A driving mechanism for automatically driving the coccyx support assembly to rotate;

[0011] The upper part of the coccyx support assembly is connected to the back support body. Under the action of the driving mechanism, the upper part of the coccyx support assembly can move forward relative to the backrest and pull the lower part of the back support body to move forward.

[0012] With the above structure, the driving mechanism drives the coccyx support assembly to rotate, and the upper part of the coccyx support assembly protrudes forward and supports the area between the passenger's buttocks and waist, which helps to improve the riding comfort. At the same time, since the coccyx support assembly and the back support body are connected together, when the upper part of the coccyx support assembly moves forward, the lower part of the back support body will also move forward together, so that a smooth transition can be ensured between the protruding part of the coccyx support assembly and the back support body, avoiding the discomfort caused by the obvious protrusion.

[0013] Preferably, the back support body is a steel wire mesh group, the coccyx support assembly includes a support plate and a rotating shaft arranged below the support plate, the lower end of the steel wire mesh group is rotatably connected to the upper end of the support plate, and the rotating shaft is rotatably connected to the backrest. With the above structure, when the support plate is driven to rotate, the rotating shaft arranged below can ensure that the upper part of the support plate moves forward. The lower end of the steel wire mesh group is rotatably connected to the upper end of the support plate, which can ensure that when the coccyx support assembly protrudes forward, the front lower part of the backrest transitions smoothly, avoiding the coccyx support assembly from forming an obvious protrusion, thereby further ensuring comfort.

[0014] Preferably, the support plate is arc-shaped and has an articulated seat at its upper end. The wire mesh group includes crisscrossing transverse wires and longitudinal wires. Both ends of the transverse wires are connected to the backrest, and the lower ends of the longitudinal wires are rotatably connected to the articulated seat.

[0015] Preferably, the coccyx support assembly further comprises a first support arm and a second support arm located at the rear side of the support plate, and a retaining shaft connected between the first support arm and the second support arm, and the rotating shaft is fixedly connected to the lower ends of the first support arm and the second support arm. With the above structure, the first support arm, the second support arm, the retaining shaft and the rotating shaft form a quadrilateral support structure at the rear side of the support plate, which can ensure the structural strength of the coccyx support assembly and improve the reliability of the support.

[0016] As a preferred embodiment, the driving mechanism comprises a motor and mutually meshing gears and a sector-shaped toothed plate, the motor drives the gear to rotate, and the sector-shaped toothed plate is fixedly sleeved on the rotating shaft. With the above structure, the motor can drive the coccyx support assembly to rotate.

[0017] Preferably, the two ends of the backrest in the width direction are provided with a first support and a second support respectively, the two ends of the rotating shaft are rotatably mounted on the first support and the second support, the outer end of the second support has a side support portion extending upward, the gear and the sector tooth plate are located on the inner side of the side support portion, and the motor is installed on the outer side of the side support portion. The above structure is adopted for easy assembly.

[0018] Preferably, the fan-shaped tooth plate is located outside the second support arm, and the second support arm is provided with a roll-up portion welded and fixed to the fan-shaped tooth plate, and one end of the retaining shaft passes through the roll-up portion and the fan-shaped tooth plate in sequence. With the above structure, the fan-shaped tooth plate and the coccyx support assembly can be rigidly connected into a whole, and the gear drives the entire coccyx support assembly to rotate with better rotation stability, which is conducive to adjustment and control.

[0019] Preferably, the lower end of the backrest is provided with a rotation axis extending along its width direction, and the first support arm, the second support arm and the middle part of the fan-shaped tooth plate are provided with an avoidance notch adapted to the rotation axis. With the above structure, the rotation axis in the seat backrest can be avoided.

[0020] Preferably, the support plate is provided with a connection block extending backward at the position corresponding to the first support arm and the second support arm, the rear end of the connection block is sleeved on the retaining shaft, the middle of the connection block is provided with a positioning groove, and the ends of the first support arm and the second support arm are provided with a positioning block adapted to the positioning groove. The above structure is adopted to facilitate the assembly of the support plate at the front end of the first support arm and the second support arm, and ensure the structural stability of the coccyx support assembly.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The motor drives the coccyx support assembly to rotate, and the upper end of the support plate protrudes forward relative to the backrest, thereby supporting the area between the user's waist and buttocks, which helps to improve the comfort of the seat.

[0023] 2. When the upper end of the coccyx support assembly protrudes forward, it can pull the lower part of the back support body to tilt forward, so that the protruding position has a smooth transition, ensuring that the front side of the backrest is still a complete supporting plane or arc surface, avoiding the discomfort caused by local protrusion.

[0024] 3. The supporting structure is reasonably designed, and modular assembly can be achieved without changing the existing seat frame. It has technical advantages such as controllable costs and broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the structure of a seat back;

[0026] Figure 2 is a sectional view of a seat;

[0027] Figure 3 A partial schematic diagram reflecting the structure of the coccyx support assembly and the drive mechanism;

[0028] Figure 4 is a structural schematic diagram of the second support;

[0029] Figure 5is a schematic structural diagram of a second supporting arm;

[0030] Figure 6 A schematic diagram of the structure of the support plate. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with embodiments and drawings.

[0032] like Figure 1 , 2 As shown in Figure 3, a car seat comprises a seat frame 6, a backrest 1 is rotatably mounted on the rear end of the seat frame 6 via a rotating shaft 11, a back support body 2 is mounted inside the backrest 1, in this embodiment, the back support body 2 is a wire mesh group, which is used to support the user's back, the wire mesh group is composed of criss-crossed transverse steel wires 21 and longitudinal steel wires 22, a coccygeal support assembly 3 is mounted at the lower end of the backrest 1, the coccygeal support assembly 3 comprises a support plate 31 at the front end and a rotating shaft 35 at the rear end, the rotating shaft 35 is rotatably connected to the backrest 1, a driving mechanism 4 is also mounted at the lower part of the backrest 1, the driving mechanism 4 is used to drive the rotating shaft 35 to rotate.

[0033] In this embodiment, the rotating shaft 35 is arranged downward relative to the support plate 31. When the driving mechanism 4 drives the rotating shaft 35 to rotate, the upper end of the support plate 31 can rotate forward along the thickness direction of the backrest. The forward displacement of the upper end of the support plate 31 will push the foam 5 forward, thereby providing support for the area between the passenger's buttocks and waist.

[0034] For example Figure 1 and 3 As shown, when the coccyx support assembly 3 is supported in the area between the buttocks and the waist, in order to avoid the discomfort caused by the obvious protrusion, the technical problem can be solved by connecting the upper part of the coccyx support assembly 3 to the lower end of the back support body 2. The specific installation structure is: the support plate 31 is an arc-shaped structure, and a hinge seat 311 is provided at its upper end. The two ends of the transverse steel wire 21 of the wire mesh group are connected to the backrest 1, and the lower end of the longitudinal steel wire 22 is rotatably connected to the hinge seat 311 of the support plate 31. When the upper end of the support plate 31 protrudes forward, it can pull the lower part of the wire mesh group to move forward, so that there is a smooth transition between the protruding position of the support plate 31 and the wire mesh group, so as to ensure that the front side of the backrest is still a complete support plane or arc surface, avoiding the discomfort caused by local protrusion.

[0035] For example Figure 3As shown, in order to improve the structural strength of the coccyx support assembly 3, the coccyx support assembly 3 also includes a first support arm 32, a second support arm 33 and a retaining shaft 34, the retaining shaft 34 is fixed to the upper ends of the first support arm 32 and the second support arm 33, the rotating shaft 35 is fixedly connected to the lower ends of the first support arm 32 and the second support arm 33, the first support arm 32, the second support arm 33, the retaining shaft 34 and the rotating shaft 35 are all installed on the rear side of the support plate 31, the first support arm 32, the second support arm 33, the retaining shaft 34 and the rotating shaft 35 form a quadrilateral support structure on the rear side of the support plate 31, which can improve the reliability of the support of the support plate 31.

[0036] For example Figure 5 and 6 As shown, the positions of the support plate 31 corresponding to the first support arm 32 and the second support arm 33 are provided with a connection block 312 extending backwards, the rear end of the connection block 312 is sleeved on the retaining shaft 34, the middle part of the connection block 312 is provided with a positioning groove b, and the ends of the first support arm 32 and the second support arm 33 are provided with a positioning block a adapted to the positioning groove b. When assembling, the connection block 312 of the support plate 31 is first sleeved on the retaining shaft 34, and then the first support arm 32 and the second support arm 33 are installed from the ends of the retaining shaft 34. The positioning block a on the first support arm 32 and the second support arm 33 is embedded in the positioning groove b along the axial direction of the retaining shaft 34, so as to realize the fixed connection between the support plate 31, the retaining shaft 34 and the corresponding first support arm 32 and the second support arm 33. Such a design has the technical advantage of convenient assembly. In order to facilitate the molding of parts, the connection block 312 is integrally formed at the rear end of the hinge seat 311.

[0037] For example Figure 3 and 4 As shown, a first support 12 and a second support 13 are respectively provided at both ends of the lower width direction of the backrest 1, and both ends of the rotating shaft 35 are rotatably mounted on the first support 12 and the second support 13, wherein the outer end of the second support 13 has a side support portion 131 extending upward, and the driving mechanism 4 includes a motor 41, a gear 42 and a fan-shaped tooth plate 43, the gear 42 and the fan-shaped tooth plate 43 are located on the inner side of the side support portion 131, and the motor 41 is fixedly mounted on the outer side of the side support portion 131, and the motor 41 drives the gear 42 to rotate, and the gear 42 is meshed with the fan-shaped tooth plate 43, and the center end of the fan-shaped tooth plate 43 is fixedly sleeved on the rotating shaft 35. Based on this transmission layout, the motor 41 can drive the coccyx support assembly 3 to rotate with the rotating shaft 35 as the rotation center.

[0038] For example Figure 3 and 5As shown, the sector tooth plate 43 is located outside the second support arm 33, and a roll-up portion 331 is provided on the second support arm 33, which is welded and fixed to the sector tooth plate 43, and the right end of the retaining shaft 34 sequentially passes through the connecting block 312, the roll-up portion 331 and the sector tooth plate 43. Such an assembly can rigidly connect the sector tooth plate 43 and the coccyx support assembly 3 into a whole, ensuring that the gear 42 drives the entire coccyx support assembly 3 to rotate with better transmission smoothness.

[0039] like Figure 2 As shown, the lower end of the backrest 1 is provided with a rotating shaft 11 extending along its width direction, and the rotating shaft 11 is located on the rear side of the support plate 31. In order to avoid the rotating shaft 11 when the mechanism is adjusted, an avoidance notch c is provided in the middle of the first support arm 32, the second support arm 33 and the fan-shaped tooth plate 43. The avoidance notch c is an arc-shaped structure, which is adapted to the rotating shaft 11.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. An electrically adjustable rear hip support structure for a car seat, characterized in that: include: Backrest (1); A back support body (2) installed inside the backrest (1) and used to support the back of a user; A coccyx support assembly (3) rotatably mounted on the lower end of the backrest (1); A driving mechanism (4) for automatically driving the coccyx support assembly (3) to rotate; The upper part of the coccyx support assembly (3) is connected to the back support body (2), and under the action of the driving mechanism (4), the upper part of the coccyx support assembly (3) can move forward relative to the backrest (1) and pull the lower part of the back support body (2) to move forward; The back support body (2) is a steel wire mesh group, the coccyx support assembly (3) comprises a support plate (31) and a rotating shaft (35) arranged below the support plate (31), the lower end of the steel wire mesh group is rotatably connected to the upper end of the support plate (31), and the rotating shaft (35) is rotatably connected to the backrest (1); The coccyx support assembly (3) further comprises a first support arm (32), a second support arm (33) located at the rear side of the support plate (31), and a retaining shaft (34) connected between the first support arm (32) and the second support arm (33); the rotating shaft (35) is fixedly connected to the lower ends of the first support arm (32) and the second support arm (33); the support plate (31) is provided with a connection block (312) extending backward at the position corresponding to the first support arm (32) and the second support arm (33); the rear end of the connection block (312) is sleeved on the retaining shaft (34); a positioning groove (b) is provided in the middle of the connection block (312); and the ends of the first support arm (32) and the second support arm (33) are provided with a positioning block (a) adapted to the positioning groove (b); The driving mechanism (4) comprises a motor (41) and a gear (42) and a sector-shaped toothed plate (43) that mesh with each other. The motor (41) drives the gear (42) to rotate, and the sector-shaped toothed plate (43) is fixedly sleeved on the rotating shaft (35).

2. The electrically adjustable rear hip support structure for a car seat according to claim 1, characterized in that: The support plate (31) is of an arc-shaped structure, and a hinge seat (311) is provided at its upper end. The wire mesh group comprises crisscrossed transverse steel wires (21) and longitudinal steel wires (22), the two ends of the transverse steel wires (21) are connected to the backrest (1), and the lower ends of the longitudinal steel wires (22) are rotatably connected to the hinge seat (311).

3. The electrically adjustable rear hip support structure for a car seat according to claim 1, characterized in that: A first support (12) and a second support (13) are respectively provided at both ends of the backrest (1) in the width direction; both ends of the rotating shaft (35) are rotatably mounted on the first support (12) and the second support (13); the outer end of the second support (13) has a side support portion (131) extending upward; the gear (42) and the fan-shaped tooth plate (43) are located on the inner side of the side support portion (131); and the motor (41) is mounted on the outer side of the side support portion (131).

4. The electrically adjustable rear hip support structure for a car seat according to claim 3, characterized in that: The sector-shaped tooth plate (43) is located outside the second support arm (33), and the second support arm (33) is provided with a roll-up portion (331) welded and fixed to the sector-shaped tooth plate (43), and one end of the retaining shaft (34) passes through the roll-up portion (331) and the sector-shaped tooth plate (43) in sequence.

5. The electrically adjustable rear hip support structure for a car seat according to claim 4, characterized in that: The lower end of the backrest (1) is provided with a rotation axis (11) extending in the width direction thereof, and the first support arm (32), the second support arm (33) and the middle part of the fan-shaped tooth plate (43) are all provided with an avoidance notch (c) adapted to the rotation axis (11).

6. The electrically adjustable rear hip support structure for a car seat according to claim 1, characterized in that: The connection block (312) is integrally formed at one end of the hinge seat (311).

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