Partial support structure of vehicle seat with backrest linkage

Abstract

The present invention discloses a backrest-linked partial support structure for a vehicle seat, comprising: a backrest; a back support body installed inside the backrest, which is used to support the back of a user; a support component arranged at the lower end of the backrest, the support component can correspond to the area between the waist and buttocks of the occupant; a connecting rod assembly installed between the support component and the backrest, which is used to restrict the lifting and lowering movement of the support component along the thickness direction of the backrest; a driving mechanism, which is used to drive the connecting rod assembly to perform an action; the support component is connected to the back support body, and under the action of the driving mechanism, the support component can lift and lower along the thickness direction of the backrest and pull the back support body to link. The beneficial effect of the present invention is that it can form support for the area between the waist and buttocks of the user according to the needs of the user, which helps to relieve the fatigue of sitting for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seats, and in particular relates to a backrest-linked vehicle seat local support structure. 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 backrest-linked vehicle seat partial support structure, which can provide support for the area between the waist and buttocks of the user according to the needs of the user, thereby helping to relieve fatigue caused by sitting for a long time.

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

[0006] A backrest-linked vehicle seat partial support structure, the key of which is to include:

[0007] Backrest;

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

[0009] A support component disposed at the lower end of the backrest, the support component being capable of correspondingly supporting the area between the waist and buttocks of the occupant;

[0010] A connecting rod assembly, which is installed between the support component and the backrest and is used to restrict the support component from moving up and down along the thickness direction of the backrest;

[0011] A driving mechanism, which is used to drive the connecting rod assembly to perform an action;

[0012] The support component is connected to the back support body. Under the action of the driving mechanism, the support component can move up and down along the thickness direction of the backrest and pull the back support body to move in conjunction.

[0013] With the above structure, after the driving mechanism is started, the supporting component can be driven to move forward under the action of the connecting rod assembly, so that the supporting component supports the area between the user's waist and buttocks, which helps to improve the comfort of the seat. At the same time, since the supporting component and the back support body are connected together, when the supporting component moves forward, the lower part of the back support body will also move forward together, which can ensure a smooth transition between the supporting component and the back support body, avoiding the discomfort caused by obvious protrusion.

[0014] Preferably, the upper end of the support component is provided with an articulated seat, and the back support body comprises transverse steel wires and longitudinal steel wires arranged in a crisscross pattern, wherein both ends of the transverse steel wires are connected to the backrest, and the lower ends of the longitudinal steel wires are rotatably connected to the articulated seat. The above structure can ensure that after the support component moves forward, the front lower part of the backrest has a smooth transition, avoiding the support component from forming an obvious protrusion, thereby further ensuring comfort.

[0015] Preferably, a bracket plate is provided at the position of the backrest corresponding to the rear side of the support component, and the connecting rod assembly includes a first moving block, a first connecting piece, a second connecting piece, a third connecting piece, a fixed block, a fourth connecting piece, a fifth connecting piece, a sixth connecting piece, and a second moving block which are hinged in sequence, wherein the second connecting piece and the fifth connecting piece are both slidably mounted on the rear side of the support component, the fixed block is fixedly mounted in the middle of the bracket plate, and the first moving block and the second moving block can slide in opposite directions at both ends of the bracket plate. With the above structure, the first moving block and the second moving block can slide in opposite directions to drive the support component to perform lifting and lowering movements.

[0016] Preferably: the support component is provided with a push plate at the position corresponding to the second connecting piece and the fifth connecting piece, and a strip hole is provided on the push plate. The second connecting piece and the first connecting piece and the third connecting piece, and the fifth connecting piece and the fourth connecting piece and the sixth connecting piece are all hinged by rivets, and the middle part of each rivet is slidably supported in the strip hole of the corresponding push plate. With the above structure, when the connecting rod assembly is working, it can ensure that the second connecting piece and the fifth connecting piece slide relative to the support component, thereby ensuring the reliability of the mechanism operation.

[0017] Preferably, the front side of the support component has a support surface with an arc structure, and the support surface is bent forward at positions corresponding to the two ends of the backrest. The above structure is adopted to help improve the comfort of support.

[0018] Preferably, a positioning lug is provided at the rear side of the support component, a connecting groove is provided on the positioning lug, and a plug-in piece adapted to the connecting groove is provided at the end of the push plate. The above structure is adopted to facilitate the rapid assembly of the support component.

[0019] As a preference, two groups of the connecting rod assemblies are symmetrically arranged on the rear side of the supporting component, and the two groups of the connecting rod assemblies are distributed along the height direction of the backrest. The above structure can ensure uniform force distribution and improve the reliability of the support.

[0020] Preferably, the driving mechanism comprises a motor, a gear box and a screw connected in sequence, wherein the screw is arranged along the width direction of the backrest, and the two ends of the screw have a first thread segment and a second thread segment respectively, the first thread segment and the second thread segment have opposite thread rotation directions, and the first motion block and the second motion block are respectively connected to the first thread segment and the second thread segment in a threaded sleeve manner. With the above structure, the motor drives the screw to rotate, and the rotation of the screw can make the first motion block and the second motion block move in opposite directions on the screw, thereby driving the support component to perform lifting movement.

[0021] Preferably, one end of the bracket plate is provided with a flange extending toward the supporting component, and the other end is provided with a supporting platform extending toward the side of the backrest, the flange is provided with a supporting hole, the gear box is fixed on the supporting platform, one end of the screw rod is connected to the gear box, and the other end is rotatably installed in the supporting hole. The above structure is adopted to facilitate the rotatable installation of the screw rod.

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

[0023] 1. The motor drives the support component to move forward at the lower end of the backrest, so that the support component can support the area between the user's waist and hips, which helps to improve the comfort of the seat and is particularly suitable for car seats in mid-to-high-end models.

[0024] 2. When the support component moves forward relative to the backrest, it can pull the lower part of the back support body to tilt forward, so that there is a smooth transition at the junction of the support component and the back support body, thereby ensuring that the front side of the backrest is still a complete supporting plane or arc surface, avoiding the discomfort caused by local protrusions.

[0025] 3. The structure is reasonable and the operation of each mechanism is reliable. Modular assembly can be achieved without changing the existing seat frame. It has technical advantages such as controllable costs and broad market application prospects.

[0026] 4. The connecting rod assembly forms symmetrical support for the supporting component in both the width direction and the height direction of the backrest, the force distribution is uniform, and the supporting component has better support comfort for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of the backrest;

[0028] Figure 2 is a cross-sectional view of a car seat;

[0029] Figure 3 A partial schematic diagram showing the assembly and connection relationship between the support component, the connecting rod assembly and the driving mechanism at the lower end of the backrest;

[0030] Figure 4 A schematic diagram of the exploded structure reflecting the assembly and connection relationship of the support component, the connecting rod assembly and the driving mechanism;

[0031] Figure 5 It is a structural schematic diagram of the supporting component;

[0032] Figure 6 It is a structural schematic diagram of the push plate;

[0033] Figure 7 It is a structural schematic diagram of the bracket plate. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with embodiments and drawings.

[0035] like Figure 1 , 2 As shown in Figure 3, a car seat includes a seat frame 5, a backrest 1 is installed at the rear end of the seat frame 5, a support component 3 is arranged at the lower end of the backrest 1, the support component 3 is an arc-shaped plate structure, the support component 3 extends along the width direction of the backrest 1, a bracket plate 11 is fixedly installed at the position of the backrest 1 corresponding to the rear side of the support component 3, a connecting rod assembly 2 is installed between the support component 3 and the bracket plate 11, the connecting rod assembly 2 is used to constrain the support component 3 to move up and down along the thickness direction of the backrest 1, and a driving mechanism 4 is also installed in the backrest 1. After the driving mechanism 4 is started, the connecting rod assembly 2 performs an action, thereby driving the support component 3 to move forward relative to the backrest 1, so that the support component 3 is supported in the area between the user's waist and buttocks.

[0036] like Figure 1 As shown, a back support body 6 for supporting the user's back is installed inside the backrest 1. In this embodiment, the back support body 6 is a steel wire mesh group, which is composed of transverse steel wires 61 and longitudinal steel wires 62 arranged in a criss-cross manner.

[0037] For example Figure 1 and 5As shown, when the support component 3 supports the area between the user's waist and buttocks, in order to avoid the discomfort caused by the obvious protrusion of the support component 3, the technical problem can be solved by connecting the upper part of the support component 3 to the lower end of the back support body 6. The specific installation structure is: the upper end of the support component 3 is provided with a hinge seat 3b, the two ends of the horizontal steel wire 61 of the wire mesh group are connected to the backrest 1, and the lower end of the longitudinal steel wire 62 is rotatably connected to the hinge seat 3b of the support component 3. When the support component 3 moves forward, it can pull the lower part of the wire mesh group to move forward, so that there is a smooth transition between the support component 3 and the wire mesh group, so as to ensure that the front side of the backrest 1 is still a complete support plane or arc surface, avoiding the discomfort caused by local protrusion.

[0038] like Figure 4 As shown, in this embodiment, the connecting rod assembly 2 includes a first moving block 21, a first connecting piece 22, a second connecting piece 23, a third connecting piece 24, a fixed block 25, a fourth connecting piece 26, a fifth connecting piece 27, a sixth connecting piece 28 and a second moving block 29 which are hinged in sequence, wherein the second connecting piece 23 and the fifth connecting piece 27 are located on the same straight line, and both are slidably mounted on the rear side of the supporting component 3, the first moving block 21, the fixed block 25 and the second moving block 29 are also located on the same straight line, the fixed block 25 is fixedly assembled in the middle of the bracket plate 11, and the first moving block 21 and the fifth connecting piece 27 are located on the same straight line. The two moving blocks 29 are located at both ends of the bracket plate 11, and the first moving block 21 and the second moving block 29 can slide in opposite directions at the two ends of the bracket plate 11. Based on the structural layout of the above-mentioned connecting rod assembly 2, when the first moving block 21 and the second moving block 29 slide in the direction close to the fixed block 25, the connecting rod assembly 2 will drive the supporting component 3 to move forward relative to the backrest 1, thereby supporting the area between the user's waist and buttocks. When the first moving block 21 and the second moving block 29 slide in the direction away from the fixed block 25, the connecting rod assembly 2 will drive the supporting component 3 to retreat, thereby completing the folding of the mechanism.

[0039] In order to be able to simultaneously drive the first moving block 21 and the second moving block 29 to slide in opposite directions, in the present embodiment, the driving mechanism 4 includes a motor 41, a flexible shaft 44, a gear box 42 and a screw 43 which are sequentially connected in power, wherein the screw 43 is arranged along the width direction of the backrest 1, and the two ends of the screw 43 respectively have a first thread segment 431 and a second thread segment 432, and the first moving block 21 and the second moving block 29 are respectively connected to the first thread segment 431 and the second thread segment 432 in a threaded sleeve manner, and the thread rotation directions of the first thread segment 431 and the second thread segment 432 are opposite, and the motor 41 drives the screw 43 to rotate, and the rotation of the screw 43 can drive the first moving block 21 and the second moving block 29 to move in opposite directions on the screw 43.

[0040] Further, such as Figure 4 and 7As shown, in order to facilitate the assembly of the components of the drive mechanism 4, one end of the bracket plate 11 is provided with a flange 111 extending toward the support component 3, and the other end is provided with a support platform 112 extending toward the side of the backrest 1. The flange 111 is provided with a support hole 113. The motor 41 is fixed to the side of the backrest 1, the gear box 42 is fixed on the support platform 112, one end of the screw 43 is connected to the gear box 42, and the other end is rotatably installed in the support hole 113. The power transmission relationship of the drive mechanism 4 is: motor 41→flexible shaft 44→gear box 42→screw 43.

[0041] For example Figure 5 and 6 As shown, in order to realize the sliding connection between the second connecting piece 23 and the fifth connecting piece 27 and the supporting part 3, the supporting part 3 is provided with a push plate 31 at the position corresponding to the second connecting piece 23 and the fifth connecting piece 27, and a strip hole 32 is provided on the push plate 31. The second connecting piece 23 and the first connecting piece 22, the second connecting piece 23 and the third connecting piece 24, the fifth connecting piece 27 and the fourth connecting piece 26, and the fifth connecting piece 27 and the sixth connecting piece 28 are all hinged by rivets 20, and the middle part of each rivet 20 is slidably supported in the strip hole 32 of the corresponding push plate 31. When the connecting rod assembly 2 performs an action, the rivet 20 slides along the strip hole 32, that is, the second connecting piece 23 and the fifth connecting piece 27 slide along the corresponding strip hole 32, so that the supporting part 3 can smoothly complete the lifting movement.

[0042] Furthermore, in order to facilitate the assembly between the support component 3 and the push plate 31 , a positioning protrusion 33 is provided on the rear side of the support component 3 , a connecting groove 34 is provided on the positioning protrusion 33 , and a plug-in piece 35 adapted to the connecting groove 34 is provided at the end of the push plate 31 .

[0043] In this embodiment, there are two groups of connecting rod assemblies 2, and the two groups of connecting rod assemblies 2 are symmetrically distributed on the rear side of the supporting component 3 along the height direction of the backrest 1. Such a design can ensure uniform force distribution and improve the reliability of support.

[0044] The first connecting plate 22, the third connecting plate 24, the fourth connecting plate 26, and the sixth connecting plate 28 of the two groups of connecting rod assemblies 2 share a set of first moving blocks 21, fixed blocks 25, and second moving blocks 29. The first connecting plate 22, the third connecting plate 24, the fourth connecting plate 26, and the sixth connecting plate 28 of the two groups of connecting rod assemblies 2 are symmetrically connected on both sides of the corresponding first moving blocks 21, fixed blocks 25, and second moving blocks 29. Such a layout can also improve the stability of the movement of the first moving blocks 21 and the second moving blocks 29 along the screw rod 43.

[0045] In addition to the implementation method provided in this embodiment, the connecting rod assembly 2 can also directly adopt a fork-type lifting mechanism.

[0046] For example Figure 1 As shown, in order to improve the support comfort, the front side of the support component 3 is provided with a support surface 3a with an arc surface structure, and the support surface 3a is bent forward at positions corresponding to the two ends of the backrest 1.

[0047] 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 backrest-linked vehicle seat partial support structure, characterized in that: include: Backrest (1); A back support body (6) installed inside the backrest (1) and used to support the back of a user; A support component (3) disposed at the lower end of the backrest (1), the front side of the support component (3) having a support surface (3a) with a curved surface structure, and the support component (3) can support the area between the waist and buttocks of the occupant; A connecting rod assembly (2) installed between the support component (3) and the backrest (1) and used to constrain the support component (3) to move up and down along the thickness direction of the backrest (1); A driving mechanism (4) for driving the connecting rod assembly (2) to perform an action; The support component (3) is connected to the back support body (6); under the action of the driving mechanism (4), the support component (3) can move up and down along the thickness direction of the backrest (1) and pull the back support body (6) in linkage; The backrest (1) is provided with a bracket plate (11) at a position on the rear side of the support component (3), and the connecting rod assembly (2) comprises a first moving block (21), a first connecting piece (22), a second connecting piece (23), a third connecting piece (24), a fixed block (25), a fourth connecting piece (26), a fifth connecting piece (27), a sixth connecting piece (28) and a second moving block (29) which are hinged in sequence, wherein the second connecting piece (23) and the fifth connecting piece (27) are both slidably mounted on the rear side of the support component (3), the fixed block (25) is fixedly mounted on the middle part of the bracket plate (11), and the first moving block (21) and the second moving block (29) can slide in opposite directions at both ends of the bracket plate (11); The support component (3) is provided with a push plate (31) at positions corresponding to the second connecting piece (23) and the fifth connecting piece (27), and a strip hole (32) is provided on the push plate (31). The second connecting piece (23) and the first connecting piece (22) and the third connecting piece (24), and the fifth connecting piece (27) and the fourth connecting piece (26) and the sixth connecting piece (28) are hingedly connected via rivets (20), and the middle part of each rivet (20) is slidably supported in the strip hole (32) of the corresponding push plate (31).

2. The backrest-linked vehicle seat partial support structure according to claim 1, characterized in that: The upper end of the support component (3) is provided with a hinge seat (3b), and the back support body (6) comprises transverse steel wires (61) and longitudinal steel wires (62) arranged in a crisscross pattern, wherein both ends of the transverse steel wires (61) are connected to the backrest (1), and the lower end of the longitudinal steel wire (62) is rotatably connected to the hinge seat (3b).

3. The backrest-linked vehicle seat partial support structure according to claim 1, characterized in that: A positioning protrusion (33) is provided on the rear side of the support component (3), a connecting groove (34) is provided on the positioning protrusion (33), and a plug-in piece (35) adapted to the connecting groove (34) is provided on the end of the push plate (31).

4. The backrest-linked vehicle seat partial support structure according to claim 1, characterized in that: Two groups of connecting rod assemblies (2) are symmetrically arranged on the rear side of the supporting component (3), and the two groups of connecting rod assemblies (2) are distributed along the height direction of the backrest (1).

5. The backrest-linked vehicle seat partial support structure according to claim 1, characterized in that: The driving mechanism (4) comprises a motor (41), a gear box (42) and a screw (43) which are connected in sequence, wherein the screw (43) is arranged along the width direction of the backrest (1), and the two ends of the screw (43) respectively have a first thread segment (431) and a second thread segment (432), the first thread segment (431) and the second thread segment (432) have opposite thread rotation directions, and the first motion block (21) and the second motion block (29) are respectively connected to the first thread segment (431) and the second thread segment (432) in a threaded sleeve manner.

6. The backrest-linked vehicle seat partial support structure according to claim 5, characterized in that: One end of the bracket plate (11) is provided with a flange (111) extending in the direction of the support component (3), and the other end is provided with a support platform (112) extending in the direction of the side of the backrest (1), the flange (111) is provided with a support hole (113), the gear box (42) is fixed on the support platform (112), one end of the screw rod (43) is connected to the gear box (42), and the other end is rotatably mounted in the support hole (113).

7. The backrest-linked vehicle seat partial support structure according to claim 1, characterized in that: The connecting rod assembly (2) is a fork-type lifting mechanism.

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