Damping structure of auxiliary walking robot

Abstract

The utility model relates to the technical field of auxiliary robot walking accessories, and discloses a damping structure of an auxiliary walking robot, which comprises a support, a mounting seat is fixedly mounted at the top of the support, and a positioning shaft is fixedly mounted at the top of the mounting seat; the buffer assembly comprises a bearing seat, adjusting blocks and a shock absorber, the bearing seat is arranged above the mounting seat, the positioning shaft is arranged in a cavity of the bearing seat in a sliding mode, the bottom of the bearing seat is in threaded connection with the multiple adjusting blocks, and the shock absorber is mounted between the adjusting blocks and the mounting seat. The support drives the mounting base to move in the vertical direction to achieve buffering of vertical vibration, the shock absorber can be extruded by the support, shock absorption buffering of the support in the vertical direction is achieved through the output shaft of the shock absorber and the spring, transmission of road bumping is restrained, and stability and comfort are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of walking-assisting robot accessories, in particular to a shock-absorbing structure of a walking-assisting robot. Background Art

[0002] In order to prevent sarcopenia in the elderly and maintain body functions, it is important to maintain muscle mass through continuous exercise for more than a certain period of time. For people with mobility problems, assistive robots are needed to support the user's body and assist in walking.

[0003] The prior art discloses a walking assistance robot for assisting a user in walking. The robot comprises: a main body; an armrest, which is arranged on the main body and can be grasped by the user; a detection unit, which detects the load applied to the armrest; and a moving device, which has a rotating body and controls the rotation of the rotating body to move the walking assistance robot.

[0004] The frame structure in the existing technology is supported by wheels that are in contact with the ground, and the wheels are fixed on the frame. When the wheels roll on the ground, the bumps will be directly transmitted to the frame. The tires used by the auxiliary robot have very weak buffering deformation ability, resulting in poor shock absorption effect, affecting the texture of use, and there is room for optimization.

[0005] To this end, we propose a shock-absorbing structure for an assisted walking robot. Utility Model Content

[0006] The utility model mainly solves the technical problem of poor shock absorption effect caused by the hard connection between the roller and the frame, and provides a shock absorption structure for an auxiliary walking robot.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a shock-absorbing structure for an auxiliary walking robot, comprising:

[0008] The bracket has a mounting seat fixedly mounted on the top of the bracket, and a positioning shaft fixedly mounted on the top of the mounting seat;

[0009] A buffer assembly is arranged above the mounting seat for absorbing vibrations. The buffer assembly includes a bearing seat, an adjustment block and a shock absorber. The bearing seat is arranged above the mounting seat, the positioning shaft is slidably arranged in the cavity of the bearing seat, the bottom of the bearing seat is threadedly connected to several adjustment blocks, and the shock absorber is installed between the adjustment block and the mounting seat.

[0010] As a preferred embodiment of the present invention, the bearing seat forms a cylinder with a sealed bottom, a plurality of threaded holes are provided at the bottom of the bearing seat, and the adjustment block is threadedly connected to the threaded holes.

[0011] As a preferred mode of the utility model, the bottom of the bearing seat is provided with a plurality of adjusting blocks, and each adjusting block is provided below with a same shock absorber, one end of the shock absorber is fixedly installed at the bottom of the adjusting block, and the other end of the shock absorber is fixedly installed at the top of the mounting seat.

[0012] As a preferred mode of the utility model, the buffer assembly further comprises an ear plate, and the outer wall of the bearing seat is fixedly connected with a plurality of ear plates for installation, and the ear plate is provided with an installation hole.

[0013] As a preferred mode of the utility model, the buffer assembly further comprises an outer shell, an inner shell and a buffer block, the buffer block forms an annular structure, the outer shell is arranged at the outer ring of the buffer block, and the inner shell is arranged at the inner ring of the inner shell.

[0014] As a preferred mode of the utility model, the outer shell and the inner shell are annular structures, and an annular channel is formed between the outer shell and the inner shell, and the buffer block is in interference fit with the annular channel.

[0015] As a preferred mode of the utility model, the buffer assembly further comprises a deformation groove, a plurality of deformation grooves are arranged at the end of the buffer block, the deformation grooves penetrate the buffer block, and a deformable petal-shaped structure is formed between the adjacent two deformation grooves.

[0016] Beneficial effects

[0017] The utility model provides a kind of damping structure of auxiliary walking robot. With following beneficial effects:

[0018] 1. The damping structure of the auxiliary walking robot, shock absorber is arranged between adjusting block and mounting seat, when the pre-pressing of spring and the output shaft of shock absorber is adjusted by rotating adjusting block, the adjustment of buffer damping is realized, the vertical displacement of mounting seat is realized by support to realize the buffer of vertical vibration, shock absorber can be extruded by support, the damping and buffering of support in vertical direction are realized by the output shaft of shock absorber and spring, the transmission of road bump is inhibited, and stability and comfort are improved.

[0019] 2. The damping structure of the auxiliary walking robot, by the cooperation of inner shell of rubber texture and outer shell and inner shell of metal material, the bottom of bearing seat is provided with circular hole, the diameter of circular hole is greater than the diameter of mounting seat, the inner shell is deformed by mounting seat offset extrusion shell, the deformation amplitude of buffer block petal-shaped structure is increased by deformation groove, the stress buffering of support in horizontal direction is realized, while guaranteeing support strength, the influence of impact in horizontal direction on driving quality is reduced, vertical displacement of shell is matched, with the double characteristics of improving vertical and horizontal direction impact vibration. ACCURACY OF DRAWINGS

[0020] Figure 1 It is overall perspective view of the utility model.

[0021] Figure 2 This is a three-dimensional diagram of the bracket of the utility model;

[0022] Figure 3 This is a three-dimensional diagram of the buffer component of the utility model;

[0023] Figure 4 This is a three-dimensional diagram of the mounting base of the utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the buffer block, inner shell and outer shell of the utility model.

[0025] Legend: 10. Bracket; 11. Positioning shaft; 12. Mounting seat; 13. Shock absorber; 20. Bearing seat; 21. Adjustment block; 22. Ear plate; 30. Outer shell; 31. Inner shell; 32. Buffer block; 33. Deformation groove. DETAILED DESCRIPTION

[0026] A shock absorbing structure for assisting a walking robot, such as Figure 1 and Figure 2 Shown, including:

[0027] The bracket 10 has a mounting base 12 fixedly mounted on the top of the bracket 10, and a positioning shaft 11 fixedly mounted on the top of the mounting base 12. Specifically, the bracket 10 forms an integrally formed U-shaped rod body, and the inner side wall of the bracket 10 can rotatably install a roller. The mounting base 12 is fixedly mounted at the center position of the top of the bracket 10. The mounting base 12 is a circular plate, and a plurality of mounting holes for installation are opened on the top surface of the mounting base 12.

[0028] like Figure 1 and Figure 3 As shown, the buffer assembly is arranged above the mounting seat 12 for absorbing vibrations. The buffer assembly includes a bearing seat 20, an adjusting block 21 and a shock absorber 13. The bearing seat 20 is arranged above the mounting seat 12, and the positioning shaft 11 is slidably arranged in the cavity of the bearing seat 20. The bottom of the bearing seat 20 is threadedly connected to a plurality of adjusting blocks 21. The shock absorber 13 is installed between the adjusting block 21 and the mounting seat 12. The bearing seat 20 forms a cylinder with a sealed bottom. The bottom of the bearing seat 20 is provided with a plurality of threaded holes, and the adjusting blocks 21 are threadedly connected to the threaded holes. A plurality of adjusting blocks 21 are arranged at the bottom of the bearing seat 20, and an identical shock absorber 13 is arranged below each adjusting block 21. One end of the shock absorber 13 is fixedly mounted to the bottom of the adjusting block 21, and the other end of the shock absorber 13 is fixedly mounted on the top of the mounting seat 12.

[0029] The supporting seat 20 is fixedly mounted on the frame of the robot body. By arranging a shock absorber 13 between the adjusting block 21 and the mounting seat 12, the buffering damping is adjusted by rotating the adjusting block 21 to adjust the output shaft of the shock absorber 13 and the preload of the spring. The vertical vibration is buffered by driving the mounting seat 12 to move vertically by the bracket 10. The shock absorber 13 can be squeezed by the bracket 10, and the output shaft and spring of the shock absorber 13 are used to achieve shock absorption and buffering of the bracket 10 in the vertical direction, thereby suppressing the transmission of road bumps and improving stability and comfort.

[0030] The buffer assembly also includes ear plates 22. The outer wall of the supporting seat 20 is fixedly connected to several ear plates 22 for installation. The ear plates 22 are provided with mounting holes. The ear plates 22 are fixed to the frame of the robot using screws through the ear plates 22. The rollers contact the ground to form support, which is convenient for assembly.

[0031] like Figure 4 and Figure 5 As shown, the buffer assembly further includes an outer shell 30, an inner shell 31 and a buffer block 32. The buffer block 32 forms an annular structure. The outer shell 30 is arranged on the outer ring of the buffer block 32, and the inner shell 31 is arranged on the inner ring of the inner shell 31. The outer shell 30 and the inner shell 31 are both annular structures. An annular channel is formed between the outer shell 30 and the inner shell 31. The buffer block 32 is interference fit with the annular channel. The buffer assembly further includes a deformation groove 33. A plurality of deformation grooves 33 are provided at the end of the buffer block 32. The deformation groove 33 passes through the buffer block 32. A deformable petal-shaped structure is formed between two adjacent deformation grooves 33. The outer shell 30 and the cavity of the bearing seat 20 are interference fit. The outer shell 30 is squeezed into the cavity of the bearing seat 20.

[0032] In this solution, since the roller is affected by bumps when rolling on the ground, the bracket 10 does not produce a single vertical displacement, but may also produce horizontal displacement. The rubber inner shell 31 is matched with the metal outer shell 30 and inner shell 31, and a circular hole is opened at the bottom of the bearing seat 20. The diameter of the circular hole is larger than the diameter of the mounting seat 12. The mounting seat 12 offsets and squeezes the outer shell 30 to deform the inner shell 31. The deformation amplitude of the petal structure of the buffer block 32 is increased through the deformation groove 33 to achieve horizontal force buffering of the bracket 10. While ensuring the support strength, it reduces the impact of the horizontal impact on the driving quality. Combined with the vertical displacement of the outer shell 30, it has the dual characteristics of improving vertical and horizontal impact vibration.

[0033] The working principle of the present invention is as follows: a shock absorber 13 is arranged between the adjustment block 21 and the mounting seat 12. By rotating the adjustment block 21 to adjust the output shaft of the shock absorber 13 and the preload of the spring, the buffer damping is adjusted. The bracket 10 drives the mounting seat 12 to move in the vertical direction to achieve buffering of vertical vibration. The rubber inner shell 31 is matched with the metal outer shell 30 and inner shell 31. A circular hole is opened at the bottom of the bearing seat 20. The diameter of the circular hole is larger than the diameter of the mounting seat 12. The mounting seat 12 offsets and squeezes the outer shell 30 to deform the inner shell 31. The deformation amplitude of the petal structure of the buffer block 32 is increased by the deformation groove 33 to achieve horizontal force buffering of the bracket 10. While ensuring the support strength, the impact of the impact in the horizontal direction on the driving texture is reduced. Cooperating with the vertical displacement of the outer shell 30, it has the dual characteristics of improving vertical and horizontal impact vibration.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing structure for an auxiliary walking robot, characterized in that: include: A bracket (10), a mounting seat (12) is fixedly mounted on the top of the bracket (10), and a positioning shaft (11) is fixedly mounted on the top of the mounting seat (12); A buffer assembly is arranged above a mounting seat (12) for absorbing vibrations, the buffer assembly comprising a bearing seat (20), an adjusting block (21) and a shock absorber (13), the bearing seat (20) being arranged above the mounting seat (12), the positioning shaft (11) being slidably arranged in a cavity of the bearing seat (20), the bottom of the bearing seat (20) being threadedly connected to a plurality of adjusting blocks (21), and the shock absorber (13) being installed between the adjusting block (21) and the mounting seat (12).

2. The shock-absorbing structure of the auxiliary walking robot according to claim 1, characterized in that: The bearing seat (20) is formed into a cylinder with a sealed bottom. A plurality of threaded holes are provided at the bottom of the bearing seat (20), and the adjustment block (21) is threadedly connected to the threaded holes.

3. The shock-absorbing structure of the auxiliary walking robot according to claim 1, characterized in that: A plurality of adjustment blocks (21) are provided at the bottom of the bearing seat (20), and an identical shock absorber (13) is provided below each adjustment block (21). One end of the shock absorber (13) is fixedly mounted on the bottom of the adjustment block (21), and the other end of the shock absorber (13) is fixedly mounted on the top of the mounting seat (12).

4. The shock-absorbing structure of the auxiliary walking robot according to claim 1, characterized in that: The buffer assembly further comprises ear plates (22); the outer wall of the bearing seat (20) is fixedly connected to a plurality of ear plates (22) for installation; and the ear plates (22) are provided with installation holes.

5. The shock-absorbing structure of the auxiliary walking robot according to claim 1, characterized in that: The buffer assembly further comprises an outer shell (30), an inner shell (31) and a buffer block (32), wherein the buffer block (32) forms an annular structure, the outer shell (30) is arranged on the outer ring of the buffer block (32), and the inner shell (31) is arranged on the inner ring of the inner shell (31).

6. The shock-absorbing structure of the auxiliary walking robot according to claim 5, characterized in that: The outer shell (30) and the inner shell (31) are both annular structures, an annular channel is formed between the outer shell (30) and the inner shell (31), and the buffer block (32) is interference-fitted with the annular channel.

7. The shock-absorbing structure of the auxiliary walking robot according to claim 5, characterized in that: The buffer assembly further comprises a deformation groove (33), a plurality of deformation grooves (33) are provided at the end of the buffer block (32), the deformation grooves (33) pass through the buffer block (32), and a deformable petal-shaped structure is formed between two adjacent deformation grooves (33).

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