Manually adjustable rear hip support structure for vehicle seats

Abstract

The present invention discloses a manually adjustable rear hip support structure for a vehicle seat, wherein a back support body for supporting the user's back is installed inside the backrest, a coccyx support assembly is rotatably installed at the lower end of the backrest, and the coccyx support assembly can support the area between the user's waist and buttocks, and an operating component is provided at the lower part of the backrest, and a transmission component is connected between the operating component and the coccyx support assembly; the upper part of the coccyx support assembly is connected to the back support body, and the operating component is manually manipulated to enable the upper part of the coccyx support assembly to move forward relative to the backrest, and to pull the lower part of the back support body to move forward. The beneficial effect of the present invention is that manually controlling the rotation of the operating component on the side of the backrest can cause the upper end of the support plate to protrude 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.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a manually adjustable rear hip support structure for 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 a manually adjustable rear hip support structure for a vehicle seat, which is used to support the area between the waist and hips of a user.

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

[0006] A manually adjustable rear hip support structure for a vehicle seat comprises a backrest, wherein a back support body for supporting a user's back is installed inside the backrest, and the key points of the structure are: a coccyx support assembly is rotatably installed at the lower end of the backrest, and the coccyx support assembly can support the area between the user's waist and hips, and an operating component is provided at the lower part of the backrest, and a transmission component is connected between the operating component and the coccyx support assembly;

[0007] The upper part of the coccyx support assembly is connected to the back support body. Manually operating the operating component can make the upper part of the coccyx support assembly move forward relative to the backrest and pull the lower part of the back support body to move forward.

[0008] With the above structure, after the user sits on the seat, he manually operates the operating component, and then the coccyx support assembly is driven to rotate under the transmission action of the transmission assembly. The upper end of the coccyx support assembly rotates forward to support the area between the user's waist and buttocks, thereby improving the comfort experience of the seat. At the same time, since the coccyx support assembly is connected to the back support body, 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 forward protruding part of the coccyx support assembly and the upper part of the backrest, avoiding the discomfort caused by the obvious protrusion.

[0009] 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.

[0010] As a preferred embodiment: the two ends of the backrest in the width direction are respectively provided with a first support and a second support, the two ends of the rotating shaft are rotatably mounted on the first support and the second support, the second support has a side support portion extending upward, the transmission assembly includes a gear transmission mechanism and a belt transmission mechanism respectively mounted on both sides of the side support portion, the gear transmission mechanism includes mutually meshing gears and a sector tooth plate, the first pulley of the belt transmission mechanism is coaxially fixed with the operating component, the second pulley is coaxially fixed with the gear, and the center position of the sector tooth plate is fixedly mounted on the rotating shaft. With the above structure, the structural layout of the operating component and the transmission assembly is reasonable, and the support plate can be driven to rotate forward at the lower end of the backrest by manually controlling the rotation of the operating component.

[0011] Preferably, the operating component comprises a hand wheel located at the side of the backrest, one side of the hand wheel is provided with a connecting shaft extending toward the inside of the backrest, and the first pulley is fixedly connected to the connecting shaft. The above structure is adopted for easy assembly.

[0012] 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.

[0013] Preferably, the coccyx support assembly further comprises a first support arm and a second support arm fixedly mounted at both ends of the rear side of the support plate, the upper ends of the first support arm and the second support arm are connected with a retaining shaft, 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.

[0014] 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.

[0015] 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.

[0016] As a preference, a positioning plate is provided on the side of the backrest, an assembly space is formed between the positioning plate and the side support portion, and the belt transmission mechanism is installed in the assembly space. The above structure is adopted to facilitate assembly.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Manually controlling the rotation of the operating part on the side of the backrest can make the upper end of the support plate protrude 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.

[0019] 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.

[0020] 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.

[0021] 4. The structure design of the transmission component is reasonable and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of the backrest;

[0023] Figure 2 is a cross-sectional view of a car seat;

[0024] Figure 3 A structural diagram showing the assembly and connection relationship between the control component, the transmission component and the tail vertebrae support component;

[0025] Figure 4is a structural schematic diagram of the second support;

[0026] Figure 5 is a schematic structural diagram of a second supporting arm;

[0027] Figure 6 A schematic diagram of the structure of the support plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments and drawings.

[0029] like Figure 1 , 2 As shown in Figure 3, a car seat includes a seat frame 7, a backrest 1 is installed behind the seat frame 7, a back support body 2 is installed inside the backrest 1, in this embodiment, the back support body 2 is a steel wire mesh group, which is used to support the back of the user, and the steel wire mesh group is composed of crisscrossed transverse steel wires 21 and longitudinal steel wires 22. A coccygeal support assembly 3 is installed at the lower end of the backrest 1, and the coccygeal support assembly 3 includes 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, and an operating member is installed on the side of the backrest 1. The longitudinal component 5, the operating component 5 includes a hand wheel 5a located outside the backrest 1, and the inner side of the hand wheel 5a is provided with a connecting shaft 5b extending into the backrest 1. A transmission assembly 4 is arranged between the connecting shaft 5b and the rotating shaft 35. The transmission assembly 4 is composed of a first pulley 44, a belt 41, a second pulley 45, a gear 42 and a sector tooth plate 43 which are sequentially connected by power. The center end of the sector tooth plate 43 is fixedly mounted on the rotating shaft 35, and the first pulley 44 is fixedly mounted on the connecting shaft 5b. The connecting shaft 5b is rotatably matched with the side of the backrest 1.

[0030] In this embodiment, the rotating shaft 35 is arranged below the support plate 31. The hand wheel 5a is manually controlled to rotate on the outside of the backrest 1, which can drive the connecting shaft 5b, the first pulley 44, the belt 41, the second pulley 45, the gear 42, and the fan-shaped toothed plate 43 to move in sequence, thereby driving the coccyx support assembly 3 to rotate with the rotating shaft 35 as the rotation center. Since the center line of the rotating shaft 35 is arranged below the support plate 31, when the rotating shaft 35 rotates, the upper end of the support plate 31 can rotate forward along the thickness direction of the backrest. The displacement of the upper end of the support plate 31 can push the foam 5 to bulge forward, thereby forming support for the area between the passenger's waist and buttocks.

[0031] For example Figure 1 and 3As shown, when the coccyx support assembly 3 is supported in the area between the waist and the buttocks, 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.

[0032] For example Figure 3 As 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.

[0033] 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, thereby realizing 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 also has the technical advantage of convenient assembly. In order to facilitate the molding of parts, the connection block 312 is integrally formed at a position slightly outside the rear end of the hinge seat 311.

[0034] For example Figure 3 and 4As shown, the two ends of the lower width direction of the backrest 1 are respectively provided with a first support 12 and a second support 13, and the two 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 side of the backrest 1 is also provided with a positioning plate 14, and an assembly space c is formed between the positioning plate 14 and the side support portion 131, and a belt transmission mechanism composed of a first pulley 44, a belt 41, and a second pulley 45 is installed in the assembly space c, and a gear transmission mechanism composed of a gear 42 and a fan-shaped toothed plate 43 is installed on the side of the side support portion 131 away from the assembly space c, and the gear 42 and the second pulley 45 are synchronously connected through a connecting shaft d, and the connecting shaft 5b of the operating component 5 is rotatably supported on the upper ends of the positioning plate 14 and the side support portion 131. Based on the above transmission layout, the hand wheel 5a used for manual control can drive the coccyx support assembly 3 to rotate with the rotating shaft 35 as the rotation center.

[0035] For example Figure 3 and 5 As shown, the fan-shaped tooth plate 43 is located on the outer side of the second support arm 33, and the second support arm 33 is provided with a rolled portion 331 welded and fixed to the fan-shaped tooth plate 43. The right end of the retaining shaft 34 passes through the connecting block 312, the rolled portion 331 and the fan-shaped tooth plate 43 in sequence. Such an assembly can rigidly connect the fan-shaped 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.

[0036] 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. A manually adjustable rear hip support structure for a vehicle seat, comprising a backrest (1), wherein a back support body (2) for supporting a user's back is installed inside the backrest (1), characterized in that: A coccyx support assembly (3) is rotatably mounted on the lower end of the backrest (1), and the coccyx support assembly (3) is capable of correspondingly supporting the area between the waist and buttocks of a user. A manipulation component (5) is provided at the lower part of the backrest (1), and a transmission assembly (4) is connected between the manipulation component (5) and the coccyx support assembly (3); The upper part of the coccyx support assembly (3) is connected to the back support body (2), and the operating component (5) is manually operated to enable the upper part of the coccyx support assembly (3) to move forward relative to the backrest (1) and to 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 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), both ends of the transverse steel wires (21) are connected to the backrest (1), and the lower end of the longitudinal steel wire (22) is rotatably connected to the hinge seat (311); The coccyx support assembly (3) further comprises a first support arm (32) and a second support arm (33) fixedly mounted on both ends of the rear side of the support plate (31); the upper ends of the first support arm (32) and the second support arm (33) are connected to a retaining shaft (34); 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 positions 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).

2. The manually adjustable rear hip support structure for a vehicle seat according to claim 1, characterized in that: The backrest (1) is provided with a first support (12) and a second support (13) at both ends in the width direction, respectively; the two ends of the rotating shaft (35) are rotatably mounted on the first support (12) and the second support (13); the second support (13) has a side support portion (131) extending upward; the transmission assembly (4) comprises a gear transmission mechanism and a belt transmission mechanism respectively mounted on both sides of the side support portion (131); the gear transmission mechanism comprises a gear (42) and a sector tooth plate (43) meshing with each other; a first pulley (44) of the belt transmission mechanism is coaxially fixed with the operating component (5); a second pulley (45) is coaxially fixed with the gear (42); and the center position of the sector tooth plate (43) is fixedly sleeved on the rotating shaft (35).

3. The manually adjustable rear hip support structure for a vehicle seat according to claim 2, characterized in that: The operating component (5) comprises a hand wheel (5a) located on the side of the backrest (1), one side of the hand wheel (5a) is provided with a connecting shaft (5b) extending toward the inside of the backrest (1), and the first pulley (44) is fixedly connected to the connecting shaft (5b).

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

5. The manually adjustable rear hip support structure for a vehicle seat according to claim 2, 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.

6. The manually adjustable rear hip support structure for a vehicle seat according to claim 2, characterized in that: A positioning plate (14) is provided on the side of the backrest (1), an assembly space (c) is formed between the positioning plate (14) and the side support portion (131), and the belt transmission mechanism is installed in the assembly space (c).

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