Seat balance mechanism of stair climbing chair

Abstract

The utility model discloses a chair seat balance mechanism of a stair climbing chair, and belongs to the field of stair climbing chairs, the chair seat balance mechanism comprises a chair seat body, the bottom end of the chair seat body is fixedly provided with two symmetrically distributed support plates, the two sides of the two support plates are both provided with driving wheels, and the bottom ends of the two support plates are both provided with auxiliary wheels; a mounting block is fixedly mounted between the two supporting plates, two symmetrically distributed mounting frames are hinged to the inner side of the mounting block, and a stair climbing assembly is arranged between the two mounting frames and the seat body; and mounting grooves are formed in the two supporting plates. Through the arrangement of the stair climbing assembly, the equipment can conveniently walk on a stair, and through the cooperation of a supporting block, a first telescopic rod, a buffer assembly, a frame body and a second crawler belt, the chair seat body can be supported and stabilized in an auxiliary manner, so that the walking stability of the chair seat body is kept, and the chair seat body is kept balanced when wanting to walk; and the comfort of a user can be improved.

Description

Technical Field

[0001] The present application relates to the field of stair climbing chairs, and more specifically, to a seat balancing mechanism of a stair climbing chair. Background Art

[0002] Wheelchairs and electric wheelchairs can travel on flat roads with a slope of less than 12 degrees, but they cannot cross stairs. This situation brings inconvenience to the lives of countless disabled people and the elderly. Some families even have a shortage of nursing staff, so the disabled people at home can hardly go downstairs a few times a year. In this regard, electric stair climbing wheelchairs can help a disabled person or an elderly person weighing more than 100 kilograms to go up and down the stairs freely under the operation of any adult.

[0003] Some existing stair climbing chairs use a cylinder to drive the seat to rise and tilt, so that the seat remains horizontal, which is convenient for the equipment to climb stairs later. However, the existing stair climbing chairs only use crawler tracks to move the equipment and support the seat. The seat is only supported by crawler tracks, so the seat may shake when walking on the stairs, reducing the stability of the equipment. Therefore, in order to solve the above problems, we propose a seat balancing mechanism for the stair climbing chair. Utility Model Content

[0004] In order to solve the above problems, the present application provides a seat balancing mechanism for a stair climbing chair, which adopts the following technical solutions:

[0005] A seat balancing mechanism of a stair climbing chair comprises a seat body, two symmetrically distributed support plates are fixedly mounted on the bottom end of the seat body, driving wheels are arranged on both sides of the two support plates, and auxiliary wheels are arranged on the bottom ends of the two support plates, a mounting block is fixedly mounted between the two support plates, and two symmetrically distributed mounting frames are hingedly mounted on the inner side of the mounting block, and a stair climbing assembly is arranged between the two mounting frames and the seat body;

[0006] The two support plates are each provided with an installation groove, and the installation grooves are each slidably installed with a support block, a second telescopic rod is fixedly installed between the support block and the inner wall on the side opposite to the installation grooves in the same group, a storage groove is provided on the inner wall of a bottom end of the two installation grooves away from the second telescopic rod in the same group, a groove is provided at the bottom of the support block away from the second telescopic rod in the same group, a rotating rod is rotatably installed in the two grooves, and the first telescopic rod is sleeved on the side walls of the two rotating rods, a frame is provided under the two first telescopic rods, and a second crawler is provided in the two frames, a buffer assembly is provided between the top of the frame and the end of the first telescopic rod in the same group, and an angle adjustment assembly is provided at the opposite end of the two rotating rods.

[0007] By adopting the above technical scheme, when the device is in use, the user sits on the top of the seat body, and the cooperation of the driving wheel and the auxiliary wheel can play the role of walking. When it is necessary to climb stairs, the seat body is driven to rise by the climbing assembly, and then it can play the role of stairs, and the second telescopic rod drives the same group of support blocks to move to the outside of the installation groove, and the support block moves with the first telescopic rod, the frame and the second crawler, and then the first telescopic rod drives the frame and the second crawler to descend, so that the second crawler contacts the ground, and the cooperation of the first telescopic rod and the second crawler plays the role of supporting and stabilizing the seat body, which is beneficial to maintaining the stability of the movement of the device, and the second crawler plays the role of auxiliary movement. The buffer assembly is set between the first telescopic rod and the frame to play a buffering role, and the device can drive the rotating rod to rotate through the angle adjustment assembly, and then the rotating rod drives the first telescopic rod to rotate with the frame and the second crawler synchronously, which plays the role of adjusting the angle of the second crawler, so that the second crawler is convenient for the second crawler to contact with the stairs, and convenient for the subsequent climbing of the device.

[0008] Furthermore, the stair climbing assembly includes a first crawler arranged in two mounting frames, a tilting block is fixedly installed between the two mounting frames, a mounting plate is hinged at the bottom end of the seat body, a cylinder is fixedly installed at the bottom end of the mounting plate, and the cylinder piston shaft is hinged to the side opposite to the tilting block.

[0009] By adopting the above technical solution, the cylinder drives the tilting block to synchronously descend with the two mounting frames, so that the first track contacts the step, and then the seat body is tilted and raised, so that the seat body is in a horizontal state during the movement, which is convenient for users to sit.

[0010] Furthermore, a first spring distributed in a linear array is connected to a side of the mounting plate opposite to the seat body.

[0011] By adopting the above technical solution, the first spring is arranged between the mounting plate and the seat body, which plays a role of buffering and supporting the mounting plate.

[0012] Furthermore, the buffer assembly includes a support column fixedly mounted on the end of the first telescopic rod, the bottom ends of the two supports are provided with movable grooves, and support rods are slidably mounted in the two movable grooves, a second spring is fixedly connected between the top end of the support rod and the inner wall of the top end of the movable groove in the same group, and the bottom ends of the two support rods are fixedly connected to the top end of the frame in the same group.

[0013] By adopting the above technical solution, when the second track contacts the step, the frame pushes the support rod to slide in the movable groove, and the support rod pushes the second spring to contract. The support rod pushes the frame under the elastic force of the second spring. Through the cooperation of the support rod and the second spring, a buffering effect can be achieved, which facilitates the subsequent walking of the equipment.

[0014] Furthermore, two symmetrically distributed sliding blocks are fixedly mounted on the top ends of the two support rods, and sliding grooves matching the sliding blocks in the same group are provided in the movable grooves.

[0015] By adopting the above technical solution, when the support rod slides in the movable groove, the support rod slides in the slide groove with the slider. The cooperation between the slider and the slide groove helps to prevent the support rod from leaving the movable groove and helps to maintain the stability of the sliding of the support rod.

[0016] Furthermore, the angle adjustment assembly includes an installation box fixedly installed on the opposite side of the two support blocks, the opposite ends of the two rotating rods penetrate into the installation boxes of the same group, the rotating rods penetrate the side walls of one end of the installation boxes of the same group and are fixedly sleeved with driven gears, reduction motors are fixedly installed in the two installation boxes, and the output shafts of the two reduction motors are fixedly sleeved with driving gears, and the driving gears are meshed with the driven gears of the same group.

[0017] By adopting the above technical solution, the reduction motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the rotating rod to rotate, the rotating rod drives the first telescopic rod, the pillar, the support rod, the frame and the second crawler to rotate synchronously, thereby adjusting the angle of the second crawler, making it easier for the first telescopic rod, the pillar, the support rod, the frame and the second crawler to support the balancing seat body, thereby facilitating the stable movement of the equipment.

[0018] Furthermore, the two support blocks are fixedly installed with limit blocks near the top of one end of the second telescopic rod in the same group, and the inner wall of the top end of the installation groove is provided with a limit groove matching the limit block in the same group.

[0019] By adopting the above technical solution, when the support block slides in the installation groove, the support block slides with the limit block in the limit groove opened on the inner wall at the top of the installation groove. The cooperation between the limit block and the limit groove helps to prevent the support block from leaving the installation groove, and can also play a role in supporting and stabilizing the support block, which is beneficial to maintaining the stability of the support block's sliding.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] (1) In the present application, the stair climbing assembly is provided to facilitate the equipment to move on the stairs, and the cooperation of the support block, the first telescopic rod, the buffer assembly, the frame and the second track can play a role in auxiliary support and stabilization of the seat body, which is beneficial to maintaining the stability of the seat body when walking, so that the seat body can maintain balance when walking, which is beneficial to improving the comfort of the user.

[0022] (2) In the present application, through the setting of the angle adjustment component, the reduction motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the rotating rod to rotate, thereby adjusting the angle of the second track to facilitate the contact between the second track and the steps, thereby supporting and stabilizing the seat, which is beneficial to maintaining the stability of the seat when walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a seat balancing mechanism of a stair climbing chair;

[0024] Figure 2 A cross-sectional view of the present application;

[0025] Figure 3 This is a schematic structural diagram of a cross-sectional view of a support plate in the present application from a first perspective;

[0026] Figure 4 For this application Figure 3 A magnified view of middle;

[0027] Figure 5 For this application Figure 3 Enlarged view of middle B;

[0028] Figure 6 It is a structural schematic diagram of a cross-sectional view of a support plate in the present application from a second viewing angle;

[0029] Figure 7 For this application Figure 6 Enlarged view of C in the middle.

[0030] Description of the numbers in the figure:

[0031] 1. Seat body; 2. First spring; 3. Mounting plate; 4. First track; 5. Support block; 6. Storage slot; 7. First telescopic rod; 8. Pillar; 9. Support rod; 10. Frame; 11. Second track; 12. Groove; 13. Mounting box; 14. Support plate; 15. Cylinder; 16. Tilting block; 17. Mounting frame; 18. Mounting block; 19. Second telescopic rod; 20. Mounting slot; 21. Rotating rod; 22. Limit block; 23. Movable slot; 24. Second spring; 25. Reduction motor; 26. Driving gear; 27. Driven gear. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] See also Figure 1-7 A seat balancing mechanism of a stair climbing chair comprises a seat body 1, two symmetrically distributed support plates 14 are fixedly installed at the bottom end of the seat body 1, driving wheels are provided on both sides of the two support plates 14, and auxiliary wheels are provided at the bottom ends of the two support plates 14, a mounting block 18 is fixedly installed between the two support plates 14, and two symmetrically distributed mounting frames 17 are hinged on the inner sides of the mounting blocks 18, a stair climbing component is provided between the two mounting frames 17 and the seat body 1, the stair climbing component comprises a first crawler 4 arranged in the two mounting frames 17, a tilting block 16 is fixedly installed between the two mounting frames 17, a mounting plate 3 is hinged at the bottom end of the seat body 1, a cylinder 15 is fixedly installed at the bottom end of the mounting plate 3, and the piston shaft of the cylinder 15 is hinged to the side opposite to the tilting block 16, and the side of the mounting plate 3 opposite to the seat body 1 is connected to a first spring 2 distributed in a linear array.

[0037] When the device is in use, the user sits on the top of the seat body 1, and the user can walk by cooperating with the driving wheel and the auxiliary wheel. When climbing stairs, the cylinder 15 drives the tilting block 16 to bring the two mounting frames 17 down synchronously, so that the first crawler 4 contacts the steps, and then the seat body 1 is tilted and raised, so that the seat body 1 is in a horizontal state during the movement, which is convenient for the user to sit and stand. The first spring 2 is set between the mounting plate 3 and the seat body 1 to play the role of buffering and supporting the mounting plate 3.

[0038] The two support plates 14 are each provided with a mounting groove 20, and the mounting grooves 20 are each slidably provided with a support block 5, a second telescopic rod 19 is fixedly installed between the support block 5 and the inner wall of the side opposite to the mounting groove 20 of the same group, a storage groove 6 is provided on the inner wall of the bottom end of the two mounting grooves 20 away from the second telescopic rod 19 of the same group, a groove 12 is provided at the bottom of the end of the support block 5 away from the second telescopic rod 19 of the same group, a rotating rod 21 is rotatably installed in the two grooves 12, and the side walls of the two rotating rods 21 are each sleeved with a first telescopic rod 7, a frame 10 is provided below the two first telescopic rods 7, and a second crawler is provided in the two frames 10 11. A buffer assembly is provided between the top of the frame 10 and the end of the first telescopic rod 7 of the same group. The buffer assembly includes a support 8 fixedly installed on the end of the first telescopic rod 7. The bottom ends of the two supports 8 are provided with movable grooves 23, and support rods 9 are slidably installed in the two movable grooves 23. A second spring 24 is fixedly connected between the top of the support rod 9 and the inner wall of the top of the movable groove 23 of the same group, and the bottom ends of the two support rods 9 are fixedly connected to the top of the frame 10 of the same group. A limiting block 22 is fixedly installed on the top of the two support blocks 5 near one end of the second telescopic rod 19 of the same group, and a limiting groove matching the limiting block 22 of the same group is provided on the inner wall of the top of the installation groove 20.

[0039] The second telescopic rod 19 drives the support block 5 of the same group to move toward the outside of the installation groove 20. When the support block 5 is located in the installation groove 20 and slides, the support block 5 slides in the limit groove provided on the inner wall at the top end of the installation groove 20 with the limit block 22. The cooperation between the limit block 22 and the limit groove helps to prevent the support block 5 from leaving the installation groove 20, and can play a role in supporting and stabilizing the support block 5, which is beneficial to maintaining the sliding stability of the support block 5. The support block 5 moves with the first telescopic rod 7, the frame 10 and the second crawler 11, and then the frame 10 and the second crawler 11 are driven by the first telescopic rod 7. 11 descends, so that the second crawler 11 contacts the ground. Through the cooperation of the first telescopic rod 7 and the second crawler 11, the seat body 1 is supported and stabilized, which is beneficial to maintaining the stability of the equipment movement, and the second crawler 11 plays a role in auxiliary movement. When the second crawler 11 contacts the step, the frame 10 pushes the support rod 9 to slide in the movable groove 23, and the support rod 9 pushes the second spring 24 to contract. The support rod 9 pushes the frame 10 under the elastic force of the second spring 24. Through the cooperation of the support rod 9 and the second spring 24, a buffering effect can be played, which is convenient for the subsequent movement of the equipment.

[0040] Two symmetrically distributed sliders are fixedly installed on the top of the two support rods 9. A slide groove matching the same group of sliders is opened in the movable groove 23. When the support rod 9 slides in the movable groove 23, the support rod 9 slides in the slide groove with the slider. The cooperation of the slider and the slide groove helps to prevent the support rod 9 from leaving the movable groove 23 and helps to maintain the stability of the sliding of the support rod 9.

[0041] An angle adjustment component is provided at the opposite ends of the two rotating rods 21, and the angle adjustment component includes a mounting box 13 fixedly installed on the opposite side of the two support blocks 5. The opposite ends of the two rotating rods 21 pass through the same group of mounting boxes 13. The rotating rods 21 pass through the same group of mounting boxes 13. The side walls of one end of the rotating rods 21 are fixedly sleeved with a driven gear 27. A reduction motor 25 is fixedly installed in the two mounting boxes 13, and the output shafts of the two reduction motors 25 are fixedly sleeved with a driving gear 26. The driving gear 26 is meshed with the same group of driven gears 27. The reduction motor 25 drives the driving gear 26 to rotate, and the driving gear 26 drives the driven gear 27 to rotate. The driven gear 27 drives the rotating rod 21 to rotate. The rotating rod 21 rotates with the first telescopic rod 7, the pillar 8, the support rod 9, the frame 10 and the second crawler 11 to rotate synchronously, so as to adjust the angle of the second crawler 11, so that the first telescopic rod 7, the pillar 8, the support rod 9, the frame 10 and the second crawler 11 support the balancing seat body 1, so as to facilitate the stable movement of the equipment.

[0042] The implementation principle of the embodiment of the present application is as follows: when the device is used, the user sits on the top of the seat body 1, and the driving wheel and the auxiliary wheel cooperate to play the role of walking. When climbing stairs is needed, the seat body 1 is driven to rise by the climbing assembly, and then it can play the role of a staircase, and the second telescopic rod 19 drives the support block 5 of the same group to move to the outside of the installation groove 20, and the support block 5 moves with the first telescopic rod 7, the frame 10 and the second crawler 11, and then the frame 10 and the second crawler 11 are driven to descend by the first telescopic rod 7, so that the second crawler 11 contacts the ground, and the second crawler 11 is driven to move to the outside of the installation groove 20 by the second telescopic rod 19. The cooperation between a telescopic rod 7 and a second crawler 11 plays the role of supporting and stabilizing the seat body 1, which is beneficial to maintaining the stability of the equipment's movement, and the second crawler 11 plays the role of assisting movement. The first telescopic rod 7 and the frame 10 are provided with a buffer component, which plays a buffering role, and the equipment can drive the rotating rod 21 to rotate through the angle adjustment component, and then the rotating rod 21 drives the first telescopic rod 7 to rotate with the frame 10 and the second crawler 11 synchronously, which plays the role of adjusting the angle of the second crawler 11, making it easier for the second crawler 11 to contact the stairs, and facilitating the subsequent climbing of the equipment.

[0043] 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 seat balancing mechanism for a stair climbing chair, comprising a seat body (1), characterized in that: Two symmetrically distributed support plates (14) are fixedly installed at the bottom end of the seat body (1), driving wheels are provided on both sides of the two support plates (14), and auxiliary wheels are provided at the bottom ends of the two support plates (14), a mounting block (18) is fixedly installed between the two support plates (14), and two symmetrically distributed mounting frames (17) are hingedly connected to the inner side of the mounting block (18), and a stair climbing component is provided between the two mounting frames (17) and the seat body (1); The two support plates (14) are each provided with a mounting groove (20), and the mounting grooves (20) are each slidably provided with a support block (5), a second telescopic rod (19) is fixedly installed between the support block (5) and the inner wall of the side opposite to the mounting grooves (20) of the same group, a storage groove (6) is provided on the inner wall of the bottom end of the two mounting grooves (20) away from the second telescopic rod (19) of the same group, and a concave groove is provided on the bottom of the end of the support block (5) away from the second telescopic rod (19) of the same group A groove (12) is provided, wherein a rotating rod (21) is rotatably installed in each of the two grooves (12), and a first telescopic rod (7) is sleeved on the side walls of the two rotating rods (21), a frame (10) is provided below each of the two first telescopic rods (7), and a second crawler (11) is provided in each of the two frames (10), a buffer assembly is provided between the top of the frame (10) and the end of the first telescopic rod (7) in the same group, and an angle adjustment assembly is provided at the opposite ends of the two rotating rods (21).

2. The seat balancing mechanism of a stair climbing chair according to claim 1, characterized in that: The stair climbing assembly comprises a first crawler (4) arranged in two installation frames (17), a tilting block (16) is fixedly installed between the two installation frames (17), a mounting plate (3) is hingedly connected to the bottom end of the seat body (1), a cylinder (15) is fixedly installed to the bottom end of the mounting plate (3), and a piston shaft of the cylinder (15) is hingedly connected to a side opposite to the tilting block (16).

3. The seat balancing mechanism of a stair climbing chair according to claim 2, characterized in that: The side of the mounting plate (3) opposite to the seat body (1) is connected to first springs (2) distributed in a linear array.

4. The seat balancing mechanism of a stair climbing chair according to claim 1, characterized in that: The buffer assembly comprises a support (8) fixedly mounted on the end of the first telescopic rod (7), the bottom ends of the two support rods (8) are each provided with a movable groove (23), and the two movable grooves (23) are each slidably mounted with a support rod (9), a second spring (24) is fixedly connected between the top end of the support rod (9) and the inner wall of the top end of the movable groove (23) of the same group, and the bottom ends of the two support rods (9) are fixedly connected to the top end of the frame (10) of the same group.

5. The seat balancing mechanism of a stair climbing chair according to claim 4, characterized in that: Two symmetrically distributed sliding blocks are fixedly mounted on the top ends of the two support rods (9), and a sliding groove matching the sliding blocks in the same group is provided in the movable groove (23).

6. The seat balancing mechanism of a stair climbing chair according to claim 1, characterized in that: The angle adjustment assembly comprises a mounting box (13) fixedly mounted on the opposite side of the two support blocks (5), the opposite ends of the two rotating rods (21) penetrate into the mounting box (13) of the same group, the side wall of one end of the rotating rod (21) penetrating the mounting box (13) of the same group is fixedly sleeved with a driven gear (27), the two mounting boxes (13) are fixedly mounted with a reduction motor (25), and the output shafts of the two reduction motors (25) are fixedly sleeved with a driving gear (26), and the driving gear (26) is meshed with the driven gear (27) of the same group.

7. The seat balancing mechanism of a stair climbing chair according to claim 1, characterized in that: A limit block (22) is fixedly installed on the top of each of the two support blocks (5) near one end of the second telescopic rod (19) of the same group, and a limit groove matching the limit block (22) of the same group is formed on the inner wall of the top end of the installation groove (20).

Images