A stepless adjustment device for a control box of a vehicle seat

Abstract

The present application relates to a control box stepless adjustment device for a vehicle seat, wherein the adjustment frame comprises at least two longitudinal side frames arranged longitudinally and two transverse side frames arranged transversely, and the two longitudinal side frames of the adjustment frame are respectively installed with adjustment mechanisms corresponding to the positions, and the adjustment mechanisms comprise a driving assembly and an adjustment arm driven by the driving assembly, and through holes are respectively arranged in the middle of the two longitudinal side frames of the adjustment frame, and the adjustment frame is rotatably provided with a transversely arranged connecting shaft, and the two ends of the connecting shaft are respectively penetrated through the through holes on the corresponding sides, and the end of the connecting shaft passing through the through holes is fixedly connected to the driving assembly on the corresponding side; the two adjustment arms are respectively rotatably installed on the longitudinal side frame or the transverse side frame on one side of the driving assembly on the corresponding side. The present application can reduce the fatigue and discomfort caused by long-term riding, and at the same time, can adapt to different human percentiles to adjust the comfort of the seat, meet the needs of different working conditions, improve the driving or riding comfort experience, and reduce the occurrence of occupational diseases.

Description

Technical Field

[0001] The present application relates to the field of a control box for a vehicle seat, and in particular to a stepless adjustment device for a control box for a vehicle seat. Background Art

[0002] The control box of the vehicle seat is commonly used in some construction machinery, such as excavators, loaders, harvesters, tower cranes, etc. In general, the seat control box is fixedly installed on the left or right sides of the seat cushion or on one side.

[0003] Usually in the field of vehicle seat product design, human body percentile design is taken into consideration. The purpose is to make the product adapt to the body size and shape of a wider group of people, thereby improving comfort during use. Through the study and analysis of different percentile human body sizes, the shape, height, width, angle and other design parameters of the seat can be optimized to meet the comfort needs of most people from smaller to larger bodies.

[0004] This can reduce fatigue and discomfort caused by long-term riding and improve the driving or riding comfort experience. At the same time, it can adapt to different human body percentiles to adjust the comfort of the seat to meet the needs of different working conditions, improve driving comfort, and reduce the occurrence of occupational diseases. Summary of the invention

[0005] In order to reduce the fatigue and discomfort caused by long-term riding, at the same time, it can adapt to different human body percentiles to adjust the comfort of the seat, meet the needs of different working conditions, improve the comfort experience of driving or riding, and reduce the occurrence of occupational diseases.

[0006] The present application provides a stepless adjustment device for a control box of a vehicle seat, which adopts the following technical solution:

[0007] A control box stepless adjustment device for a vehicle seat comprises an adjustment frame, the adjustment frame comprises at least two longitudinal side frames arranged longitudinally and two transverse side frames arranged transversely, the two longitudinal side frames of the adjustment frame are respectively installed with adjustment mechanisms with corresponding positions, the adjustment mechanisms comprise a driving assembly and an adjustment arm driven by the driving assembly, the two longitudinal side frames of the adjustment frame are respectively provided with through holes, the adjustment frame is rotatably provided with a transversely arranged connecting shaft, the two ends of the connecting shaft are respectively penetrated through the through holes on the corresponding sides, the end of the connecting shaft passing through the through holes is fixedly connected to the driving assembly on the corresponding side; the two adjustment arms are respectively rotatably installed on the longitudinal side frame or the transverse side frame on one side of the driving assembly on the corresponding side.

[0008] In some embodiments, the driving components all include a driving connecting rod, one end of the driving connecting rod is a main driving end, and the other end is an auxiliary driving end; the two ends of the connecting shaft are respectively fixedly connected to the auxiliary driving ends of the corresponding side driving connecting rod.

[0009] In some embodiments, an adjustment bracket is provided on both longitudinal side frames, one end of the adjustment arm is rotatably provided on the adjustment bracket on the corresponding side, and the end of the adjustment arm away from the adjustment bracket is driven by the driving connecting rod on the corresponding side.

[0010] In some embodiments, a hook-shaped driving arm is provided at one end of the adjusting arm away from the adjusting bracket, and the inner circle of the driving arm is arranged toward the direction of the secondary driving end of the corresponding side driving connecting rod; the inner circle of the driving arm is arranged in an arc shape, and a section of arc-shaped driven teeth is arranged on the inner circle, and a main driving gear meshing with the driven teeth is provided on the side of the secondary driving end of the corresponding side driving connecting rod away from the longitudinal side frame.

[0011] In some embodiments, the vertices of the corresponding positions of the tooth tops of the driven teeth are on the same arc line, and the radius of the arc line is smaller than the radius of the inner circle of the driving arm.

[0012] In some embodiments, a stop arm is provided on the auxiliary driving end of the driving connecting rod, and the stop arm is located on the side of the corresponding side adjustment arm facing the longitudinal side frame, and there is a certain distance between the stop arm and the end surface of the corresponding side adjustment arm.

[0013] In some embodiments, an angle greater than 0 degrees and less than 180 degrees is formed between the driving link and the blocking arm.

[0014] In some embodiments, a rotating base is rotatably installed on the main driving end of one of the driving links, and a fixed bracket is provided on the side of the longitudinal side frame on which the driving link is installed, away from the corresponding side adjustment bracket, or on the side of the transverse side frame on which the driving link is installed, away from the corresponding side adjustment bracket. A mounting hole is longitudinally provided on the fixed bracket, and an axial hole is longitudinally provided on the rotating base. One end of the driving shaft is threadedly engaged with the axial hole, and the other end is passed through the mounting hole, and the driving shaft does not make axial displacement relative to the mounting hole.

[0015] In some embodiments, an expansion portion is provided at one end of the driving shaft away from the rotating base, a bearing is sleeved on the side of the driving shaft close to the expansion portion, and the end face of the bearing away from the expansion portion abuts against the end face of the fixed bracket away from the rotating base; a limit sleeve is sleeved on the side of the driving shaft away from the expansion portion, a limit hole is provided on the driving shaft between the fixed bracket and the rotating base, a limit pin that can be inserted into the limit hole is provided on the driving shaft, and the limit sleeve is located between the end face of the fixed bracket facing the rotating base and the limit pin.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: by simplifying the adjustment structure and utilizing the coordination of the drive assembly and the adjustment arm, the present design can effectively reduce the fatigue and discomfort caused by long-term riding. At the same time, it can adapt to different human percentiles to adjust the comfort of the seat, meet the needs of different working conditions, improve the comfort experience of driving or riding, and reduce the occurrence of occupational diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a control box stepless adjustment device for a vehicle seat in an embodiment of the present application.

[0018] Figure 2 It is a structural schematic diagram of an adjustment mechanism in a stepless adjustment device of a control box of a vehicle seat in an embodiment of the present application.

[0019] Figure 3 It is a structural schematic diagram of a driving connecting rod part in a stepless adjustment device of a control box of a vehicle seat in an embodiment of the present application.

[0020] Figure 4 This is a display diagram of a seat control box installed on a stepless adjustment device of a vehicle seat control box in an embodiment of the present application.

[0021] Explanation of the accompanying drawings: 1. longitudinal side frame; 2. transverse side frame; 3. adjusting arm; 4. connecting shaft; 5. driving connecting rod; 6. main driving end; 7. auxiliary driving end; 8. adjusting bracket; 9. driving arm; 10. inner ring; 11. driven gear; 12. main driving gear; 13. stop arm; 14. rotating base; 15. fixed bracket; 16. driving shaft; 17. expanding diameter portion; 18. bearing; 19. limiting sleeve; 20. limiting pin. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1 to 4 This application is described in further detail.

[0023] The present application embodiment discloses a control box stepless adjustment device for a vehicle seat, referring to Figure 1 , including an adjustment frame, the adjustment frame includes at least two longitudinal side frames 1 arranged vertically and two transverse side frames 2 arranged horizontally, and the two longitudinal side frames 1 and the transverse side frames 2 form a frame structure of a frame type structure.

[0024] Reference Figure 2 , 3 In this embodiment, the two longitudinal side frames 1 of the adjustment frame are respectively installed with corresponding adjustment mechanisms, the adjustment mechanisms include a driving assembly and an adjustment arm 3 driven by the driving assembly. The two longitudinal side frames 1 of the adjustment frame are respectively provided with through holes in the middle, and the adjustment frame is rotatably provided with a transversely arranged connecting shaft 4. The two ends of the connecting shaft 4 are respectively penetrated through the through holes on the corresponding sides, and the end of the connecting shaft 4 passes through the through holes and is fixedly connected to the driving assembly on the corresponding side; the two adjustment arms 3 are respectively rotatably installed on the longitudinal side frame 1 or the transverse side frame 2 on one side of the driving assembly on the corresponding side.

[0025] In the above, the driving components all include a driving connecting rod 5, one end of the driving connecting rod 5 is a main driving end 6, and the other end is an auxiliary driving end 7; the two ends of the connecting shaft 4 are respectively fixedly connected to the auxiliary driving end 7 of the driving connecting rod 5 on the corresponding side. In this embodiment, an adjustment bracket 8 is provided on each of the two longitudinal side frames 1, and one end of the adjustment arm 3 is rotatably provided on the adjustment bracket 8 on the corresponding side through a rotating shaft, and the end of the adjustment arm 3 away from the adjustment bracket 8 is driven by the driving connecting rod 5 on the corresponding side; and the structural mode of the driving connecting rod 5 driving the adjustment arm 3 on the corresponding side is: the adjustment arm 3 is away from the adjustment bracket 8 A hook-shaped driving arm 9 is provided at one end of the adjusting bracket 8, and the inner ring 10 of the driving arm 9 is arranged toward the auxiliary driving end 7 of the corresponding side driving connecting rod 5; the inner ring 10 of the driving arm 9 is arranged in an arc shape, and a section of arc-shaped driven teeth 11 is provided on the inner ring 10. Generally, this section of the driven teeth 11 is arranged to be away from the side of the adjusting arm 3, and a main driving gear 12 meshing with the driven teeth 11 is provided on the side of the auxiliary driving end 7 of the corresponding side driving connecting rod 5 away from the longitudinal side frame 1. In this embodiment, the main driving gear 12 is coaxially fixedly installed with the connecting shaft 4.

[0026] In addition, in the present embodiment, in order to make the adjustment height of the adjusting arm 3 in the vertical direction relatively higher, the vertices of the corresponding positions of the tooth tops of the driven teeth 11 are on the same arc line, and the radius of the arc line is smaller than the radius of the inner circle 10 of the driving arm 9; at the same time, in order to reduce unnecessary swinging of the adjusting arm 3 during height adjustment, a stop arm 13 can be provided on the auxiliary driving end 7 of the driving connecting rod 5, and the stop arm 13 is located on the side of the corresponding side adjusting arm 3 facing the longitudinal side frame 1, and the stop arm 13 is at a certain distance from the end face of the corresponding side adjusting arm 3. The design of this distance can allow space for slight shaking, but can also ensure that the shaking space is too large, resulting in too much shaking and floating during use, causing the entire structure to malfunction or excessive noise, etc. At the same time, it can also reduce unnecessary wear between parts. Usually, in order to enable better cooperation between the stop arm 13 and the driving arm 9, an angle greater than 0 degrees and less than 180 degrees needs to be formed between the driving connecting rod 5 and the stop arm 13.

[0027] In the present embodiment, a rotating base 14 is rotatably mounted on the main driving end 6 of one of the driving connecting rods 5, and a fixed bracket 15 is arranged on the side of the longitudinal side frame 1 on which the driving connecting rod 5 is mounted, which is away from the corresponding side adjusting bracket 8, or on the side of the transverse side frame 2 which is away from the corresponding side adjusting bracket 8. A mounting hole is longitudinally arranged on the fixed bracket 15, and an axial hole is longitudinally arranged on the rotating base 14. One end of the driving shaft 16 is threadedly matched with the axial hole, and the other end is penetrated through the mounting hole, and the driving shaft 16 does not make axial displacement relative to the mounting hole. In addition, in order to ensure that the driving shaft 16 does not make axial displacement relative to the mounting hole, the driving shaft 16 is away from the rotating base. 14 is provided with an expanded diameter portion 17 at one end, and a bearing 18 is sleeved on the side of the drive shaft 16 close to the expanded diameter portion 17, and the end surface of the bearing 18 away from the expanded diameter portion 17 abuts against the end surface of the fixed bracket 15 away from the rotating base 14; a limiting sleeve 19 is sleeved on the side of the drive shaft 16 away from the expanded diameter portion 17, a limiting hole is provided on the drive shaft 16 between the fixed bracket 15 and the rotating base 14, and a limiting pin 20 that can be inserted into the limiting hole is provided on the drive shaft 16, and the limiting sleeve 19 is located between the end surface of the fixed bracket 15 facing the rotating base 14 and the limiting pin 20. In this embodiment, the limiting sleeve 19 can also be a bearing 18.

[0028] The embodiment of the present application discloses a control box stepless adjustment device for a vehicle seat. During operation, the drive shaft 16 is manually operated to rotate, and the drive shaft 16 drives the rotating base 14 to make axial movement relative to the drive shaft 16, thereby driving the drive connecting rod 5 on the corresponding side to rotate with the connecting shaft 4 as the rotation center. While rotating, the drive connecting rod 5 on the other side also rotates synchronously. When the drive connecting rods 5 on both sides rotate, the main drive gear 12 coaxially fixedly installed with the connecting shaft 4 also rotates synchronously, so that the driven gear 11 meshing with the main drive gear 12 moves synchronously, so that the adjustment arm 3 with the drive arm 9 performs corresponding movements in the vertical direction; refer to Figure 4 In this embodiment, one side of the control box is rotatably arranged on the axis of the adjusting bracket 8, and the other side is installed on the axis of the driving arm 9. Therefore, when the control box realizes the change of the tilt angle, it rotates with the axis of the adjusting bracket 8 as the center.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stepless adjustment device for a control box of a vehicle seat, comprising an adjustment frame, the adjustment frame comprising at least two longitudinal side frames (1) arranged longitudinally and two transverse side frames (2) arranged transversely, characterized in that: The two longitudinal side frames (1) of the adjustment frame are respectively installed with adjustment mechanisms at corresponding positions, and the adjustment mechanisms include a driving assembly and an adjustment arm (3) driven by the driving assembly. Through holes are respectively arranged in the middle of the two longitudinal side frames (1) of the adjustment frame. The adjustment frame is rotatably provided with a transversely arranged connecting shaft (4), and the two ends of the connecting shaft (4) are respectively inserted into the through holes on the corresponding sides, and the end of the connecting shaft (4) passes through the through holes and is fixedly connected to the driving assembly on the corresponding side; the two adjustment arms (3) are respectively rotatably installed on the longitudinal side frame (1) or the transverse side frame (2) on one side of the driving assembly on the corresponding side.

2. The control box stepless adjustment device for a vehicle seat according to claim 1, characterized in that: The driving components all comprise a driving connecting rod (5), one end of the driving connecting rod (5) being a main driving end (6) and the other end being a secondary driving end (7); the two ends of the connecting shaft (4) are respectively fixedly connected to the secondary driving end (7) of the driving connecting rod (5) on the corresponding side.

3. The control box stepless adjustment device for a vehicle seat according to claim 2, characterized in that: An adjustment bracket (8) is provided on each of the two longitudinal side frames (1); one end of the adjustment arm (3) is rotatably provided on the adjustment bracket (8) on the corresponding side; and the end of the adjustment arm (3) away from the adjustment bracket (8) is driven by a driving connecting rod (5) on the corresponding side.

4. The control box stepless adjustment device for a vehicle seat according to claim 3, characterized in that: The end of the adjusting arm (3) away from the adjusting bracket (8) is provided with a hook-shaped driving arm (9), and the inner ring (10) of the driving arm (9) is arranged in the direction of the auxiliary driving end (7) of the corresponding side driving connecting rod (5); the inner ring (10) of the driving arm (9) is arranged in an arc shape, and a section of arc-shaped driven teeth (11) is arranged on the inner ring (10), and a main driving gear (12) meshing with the driven teeth (11) is arranged on the side of the auxiliary driving end (7) of the corresponding side driving connecting rod (5) away from the longitudinal side frame (1).

5. The control box stepless adjustment device for a vehicle seat according to claim 4, characterized in that: The vertices of the corresponding positions of the tooth tops of the driven teeth (11) are on the same arc-shaped connecting line, and the radius of the arc-shaped connecting line is smaller than the radius of the inner ring (10) of the driving arm (9).

6. The control box stepless adjustment device for a vehicle seat according to claim 4, characterized in that: A stop arm (13) is provided on the auxiliary driving end (7) of the driving connecting rod (5), the stop arm (13) is located on the side of the corresponding side adjusting arm (3) facing the longitudinal side frame (1), and the stop arm (13) is at a certain distance from the end surface of the corresponding side adjusting arm (3).

7. The control box stepless adjustment device for a vehicle seat according to claim 6, characterized in that: An included angle greater than 0 degrees and less than 180 degrees is formed between the driving connecting rod (5) and the blocking arm (13).

8. The control box stepless adjustment device for a vehicle seat according to claim 3, characterized in that: A rotating base (14) is rotatably mounted on the main driving end (6) of one of the driving connecting rods (5); a fixed bracket (15) is arranged on the side of the longitudinal side frame (1) on which the driving connecting rod (5) is mounted, which is away from the corresponding side adjustment bracket (8), or on the side of the transverse side frame (2) which is away from the corresponding side adjustment bracket (8); a mounting hole is longitudinally arranged on the fixed bracket (15); an axial hole is longitudinally arranged on the rotating base (14); one end of the driving shaft (16) is threadedly engaged with the axial hole, and the other end is passed through the mounting hole, and the driving shaft (16) does not make axial displacement relative to the mounting hole.

9. The control box stepless adjustment device for a vehicle seat according to claim 8, characterized in that: An expanded diameter portion (17) is provided at one end of the drive shaft (16) away from the rotating base (14); a bearing (18) is sleeved on a side of the drive shaft (16) close to the expanded diameter portion (17); an end surface of the bearing (18) away from the expanded diameter portion (17) abuts against an end surface of the fixed bracket (15) away from the rotating base (14); a limiting sleeve (19) is sleeved on the side of the drive shaft (16) away from the expanded diameter portion (17); a limiting hole is provided on the drive shaft (16) between the fixed bracket (15) and the rotating base (14); a limiting pin (20) which can be inserted into the limiting hole is provided on the drive shaft (16); and the limiting sleeve (19) is located between the end surface of the fixed bracket (15) facing the rotating base (14) and the limiting pin (20).

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