Occupant support device and vehicle seat

Abstract

The present invention discloses an occupant support device and a car seat, wherein the occupant support device is installed at the lower part of the backrest. The occupant support device comprises: a bracket assembly, which is used to be fixedly assembled on the backrest; a frame, which is rotatably connected to the bracket assembly; a support component, which is fixedly installed on the frame; and a driving mechanism for driving the frame to rotate relative to the bracket assembly, under the action of the driving mechanism, at least part of the support component can move forward relative to the backrest. The beneficial effect of the present invention is that the motor drives the support component to rotate, and the upper end of the support component protrudes forward relative to the backrest, which can achieve the purpose of supporting the area between the waist and buttocks of the occupant.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat parts, and in particular to an occupant supporting device. 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] In terms of the comfortable structural design of seats, the current mainstream technical routes include seat massage, back massage, flexible support and lumbar support. These technical means have improved the driving experience of the seats to a certain extent and relieved the user's muscle fatigue in the buttocks, waist, shoulders and back areas.

[0004] After a user sits on a seat, the area between the waist and buttocks (hip joint, coccyx) is usually in an unsupported state. In existing seat structure designs, research on the support structure of this area is almost blank. Summary of the invention

[0005] In view of the above, the present invention provides an occupant support device for supporting the area between the waist and hips of a user.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] An occupant support device, the key of which is to include:

[0008] A bracket assembly, which is used for fixed assembly to the backrest;

[0009] A frame, which is rotatably connected to the support assembly;

[0010] A supporting component, which is fixedly mounted on the frame;

[0011] and a driving mechanism for driving the frame to rotate relative to the bracket assembly, under the action of which at least a portion of the support component can move forward relative to the backrest.

[0012] With the above structure, after the occupant support device is installed at the lower end of the backrest, the area between the waist and buttocks of the occupant can be supported by controlling the support component to move forward relative to the backrest.

[0013] Preferably, the front side of the support component has an outwardly protruding arc surface, and the rotation center line of the frame is offset downward relative to the middle position of the arc surface. With the above structure, the arc surface has better support comfort, and the rotation center line of the frame is set downward, which can ensure that the upper part of the support component moves forward when the support component is driven to rotate.

[0014] Preferably, the bracket assembly includes a first component and a second component located at both ends of the supporting part, the skeleton includes a rotating shaft, and a first supporting arm and a second supporting arm respectively fixedly mounted at both ends of the rotating shaft, the two ends of the rotating shaft are respectively rotatably assembled on the first component and the second component, and the supporting part is mounted on the first supporting arm and the second supporting arm.

[0015] The skeleton also includes a retaining shaft, the two ends of which are respectively mounted on the upper parts of the first support arm and the second support arm, the support component is provided with connecting blocks at positions corresponding to the first support arm and the second support arm, the distal end of the connecting block is sleeved on the retaining shaft, the middle part of the connecting block is provided with a positioning groove, and the ends of the first support arm and the second support arm are provided with positioning blocks adapted to the positioning groove. The above structure has the technical advantages of reasonable structural layout and being conducive to product assembly.

[0016] Preferably, the driving mechanism includes a reduction motor, a gear driven by the reduction motor, and a sector-shaped toothed plate meshing with the gear, and one end of the rotating shaft is fixedly connected to the center of the sector-shaped toothed plate. With the above structure, the reduction motor can drive the upper end of the supporting component to move forward when it is working, thereby supporting the area between the waist and hips of the occupant.

[0017] Preferably, the second member includes a side support plate, a horizontal support portion extending inward is provided at the lower end of the side support plate, a vertical support portion is provided on the horizontal support portion, the center end of the sector tooth plate is located between the vertical support portion and the side support plate, and one end of the rotating shaft passes through the vertical support portion, the sector tooth plate and the side support plate in sequence. With the above assembly structure, the sector tooth plate is adapted to the end of the support component, which can ensure the compactness of the structural assembly.

[0018] Preferably, the first support arm, the second support arm and the middle part of the sector-shaped tooth plate are provided with an avoidance notch. With the above structure, the rotating shaft in the seat back can be avoided.

[0019] Preferably, the second support arm is provided with a roll-up portion protruding outward at a position corresponding to the holding shaft, and one end of the holding shaft passes through the connecting block, the roll-up portion and the fan-shaped tooth plate in sequence. With the above structure, the support component, the fan-shaped tooth plate and the frame can be rigidly connected as a whole, so that the rotation of the support component is more stable, which is conducive to adjustment and control.

[0020] Preferably, the gear and the reduction motor are mounted on the inner and outer sides of the second component respectively, and the bracket assembly further comprises a third component, which is mounted on the side of the reduction motor away from the second component, and a support is provided on the side of the third component away from the reduction motor. The above structure is adopted to facilitate connection with the backrest frame.

[0021] The present invention also provides a car seat, comprising a backrest, the key point of which is that the above-mentioned passenger supporting device is installed at the lower part of the backrest.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. After the occupant support device is installed at the lower end of the backrest, the motor drives the support component to rotate, and the upper end of the support component protrudes forward relative to the backrest, thereby achieving the purpose of supporting the area between the occupant's waist and buttocks.

[0024] 2. The structure of the occupant support device 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 It is a structural schematic diagram of a car seat;

[0026] Figure 2 is a schematic diagram of the structure of the occupant support device;

[0027] Figure 3 is a schematic diagram of the exploded structure of the occupant support device;

[0028] Figure 4 is a schematic structural diagram of a second supporting arm;

[0029] Figure 5 It is a schematic structural diagram of the second component. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with embodiments and drawings.

[0031] like Figure 1 and 2 As shown, a car seat comprises a seat portion C and a backrest B. The backrest B is rotatably connected to the rear end of the seat portion C via a rotating shaft 5, and an occupant support device A is installed at the lower end of the backrest B.

[0032] For example Figure 2 and 3 As shown, the main parts of the occupant support device A include: a bracket assembly 1, a frame 2, a support component 3, and a drive mechanism 4.

[0033] The support assembly 1 includes a first component 11 , a second component 12 and a third component 13 , and the first component 11 and the third component 13 are fixedly connected to the backrest B.

[0034] The skeleton 2 includes a rotating shaft 21 and a retaining shaft 24, and the first support arm 22 and the second support arm 23 are fixedly installed at both ends of the rotating shaft 21 and the retaining shaft 24. The support component 3 is in an arc-shaped structure, and its front side has an arc surface 31 protruding outward. The rear end of the support component 3 is fixedly connected to the first support arm 22 and the second support arm 23. The two ends of the rotating shaft 21 are respectively rotatably assembled on the first component 11 and the second component 12, and the rotating shaft 21 is located between the lower ends of the first support arm 22 and the second support arm 23. After the components are assembled, the support component 3 can rotate forward and backward relative to the bracket assembly 1 with the rotating shaft 21 as the rotation center line. In this embodiment, the rotation center line of the rotating shaft 21 is offset downward relative to the middle position of the support component 3, that is, the rotating shaft 21 is eccentrically installed downward, so under the driving action of the driving mechanism 4, the upper part of the support component 3 can rotate forward relative to the backrest B. When the upper part of the support component 3 rotates forward to contact with the user, the arc surface 31 of the support component 3 can support the area between the user's waist and buttocks, thereby comprehensively improving the support comfort of the seat.

[0035] like Figures 2 to 4 As shown, the support component 3 is provided with a connection block 32 protruding backward at the position corresponding to the first support arm 22 and the second support arm 23, the distal end of the connection block 32 is sleeved on the retaining shaft 24, and a positioning groove b is provided in the middle of the connection block 32, and the ends of the first support arm 22 and the second support arm 23 are provided with a positioning block a adapted to the positioning groove b, and the positioning block a is embedded in the positioning groove b to limit the rotation of the connection block 32 relative to the retaining shaft 24, so that the support component 3 can be stably assembled on the skeleton 2. After the connection block 32 is sleeved on the retaining shaft 24, the first support arm 22 and the second support arm 23 are installed from the end to complete the fixed installation of the support component 3, so such a structural design also has a technical advantage of being conducive to product assembly.

[0036] like Figure 3 and 5 As shown, the second component 12 includes a side support plate 121, the driving mechanism 4 includes a reduction motor 41, a gear 42 driven to rotate by the reduction motor 41, and a sector-shaped tooth plate 43 meshing with the gear 42, the gear 42 and the sector-shaped tooth plate 43 are installed on the inner side of the side support plate 121, the reduction motor 41 is installed on the outer side of the side support plate 121, and the center end of the sector-shaped tooth plate 43 is fixedly mounted on the rotating shaft 21. Based on the above structural arrangement, the reduction motor 41 can drive the rotating shaft 21 to rotate when it is working, thereby causing the upper end of the support component 3 to move forward.

[0037] To facilitate installation, a horizontal support portion 122 extending inward is provided at the lower end of the side support plate 121, and a vertical support portion 123 is provided on the horizontal support portion 122. The center end of the fan-shaped tooth plate 43 is located between the vertical support portion 123 and the side support plate 121. One end of the rotating shaft 21 passes through the vertical support portion 123, the fan-shaped tooth plate 43 and the side support plate 121 in sequence. After assembly, the rotating shaft 21 rotates with the vertical support portion 123 and the side support plate 121, and the rotating shaft 21 is fixedly connected to the fan-shaped tooth plate 43.

[0038] like Figure 2 and 4 As shown, the second support arm 23 is provided with an outwardly protruding roll portion 231 at the position corresponding to the retaining shaft 24, and the right end of the retaining shaft 24 passes through the connecting block 32, the roll portion 231 and the fan-shaped tooth plate 43 in sequence and is fixedly connected to the three. Such a design can rigidly connect the support component 3, the fan-shaped tooth plate 43 and the skeleton 2 as a whole, so that the rotation of the support component 3 is more stable, which is conducive to adjustment and control.

[0039] like Figure 1 , 3 As shown in , 4 and 5, after the occupant support device A is installed at the lower end of the backrest B, the rotating shaft 5 is located at the rear end of the support component 3. In order to avoid the rotating shaft 5, an arc-shaped avoidance notch c is provided in the middle of the first support arm 22, the second support arm 23 and the fan-shaped tooth plate 43.

[0040] like Figure 2 and 3 As shown, the reduction motor 41 is installed between the second component 12 and the third component 13. A support 131 is provided on the side of the third component 13 away from the reduction motor 41. The modular installation of the occupant support device A can be achieved by welding the support 131 and the first component 11 to the frame of the backrest B.

[0041] 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 occupant support device (A), characterized in that: include: A bracket assembly (1) for fixedly assembling onto a backrest (B); A frame (2) rotatably connected to the support assembly (1); A supporting component (3) fixedly mounted on the frame (2); and a driving mechanism (4) for driving the frame (2) to rotate relative to the support assembly (1), wherein under the action of the driving mechanism (4), at least part of the support component (3) can move forward relative to the backrest (B); The front side of the support component (3) has an outwardly protruding arc surface (31), and the rotation center line of the frame (2) is offset downward relative to the middle position of the arc surface (31); The support assembly (1) comprises a first member (11) and a second member (12) located at two ends of the support component (3); the frame (2) comprises a rotating shaft (21), and a first support arm (22) and a second support arm (23) respectively fixedly mounted at two ends of the rotating shaft (21); the two ends of the rotating shaft (21) are respectively rotatably mounted on the first member (11) and the second member (12); the support component (3) is mounted on the first support arm (22) and the second support arm (23); the frame (2) further comprises a rotating shaft (21) and a first support arm (22) and a second support arm (23); The invention comprises a retaining shaft (24), the two ends of which are respectively mounted on the upper parts of a first supporting arm (22) and a second supporting arm (23), the supporting component (3) is provided with connecting blocks (32) at positions corresponding to the first supporting arm (22) and the second supporting arm (23), the distal end of the connecting block (32) is sleeved on the retaining shaft (24), a positioning groove (b) is provided in the middle of the connecting block (32), and the ends of the first supporting arm (22) and the second supporting arm (23) are provided with positioning blocks (a) adapted to the positioning groove (b).

2. The occupant support device according to claim 1, characterized in that: The driving mechanism (4) comprises a reduction motor (41), a gear (42) driven to rotate by the reduction motor (41), and a sector-shaped toothed plate (43) meshing with the gear (42); one end of the rotating shaft (21) is fixedly connected to the center of the sector-shaped toothed plate (43).

3. The occupant support device according to claim 2, characterized in that: The second component (12) comprises a side support plate (121), the lower end of the side support plate (121) is provided with a horizontal support portion (122) extending inwardly, the horizontal support portion (122) is provided with a vertical support portion (123), the center end of the sector-shaped tooth plate (43) is located between the vertical support portion (123) and the side support plate (121), and one end of the rotating shaft (21) passes through the vertical support portion (123), the sector-shaped tooth plate (43) and the side support plate (121) in sequence.

4. The occupant support device according to claim 3, characterized in that: The first support arm (22), the second support arm (23) and the fan-shaped tooth plate (43) are all provided with avoidance notches (c) in the middle.

5. The occupant support device according to claim 4, characterized in that: The second support arm (23) is provided with a rolled portion (231) protruding outward at a position corresponding to the retaining shaft (24), and one end of the retaining shaft (24) passes through the connecting block (32), the rolled portion (231) and the fan-shaped tooth plate (43) in sequence.

6. The occupant support device according to claim 5, characterized in that: The gear (42) and the reduction motor (41) are mounted on the inner and outer sides of the second component (12) respectively. The bracket assembly (1) further comprises a third component (13). The third component (13) is mounted on a side of the reduction motor (41) away from the second component (12). A support (131) is provided on a side of the third component (13) away from the reduction motor (41).

7. A car seat, comprising a backrest (B), characterized in that: An occupant supporting device (A) according to any one of claims 1 to 6 is installed at the lower part of the backrest (B).

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