Motor joint body and artificial limb

Abstract

A support of the motor joint body is further provided with a machine cavity, a driving motor, an adjusting motor, a gear speed reduction assembly and an adjusting gear assembly, a rotating shaft is connected with an end cover, a tooth section is arranged on the periphery of the end cover, the driving motor is arranged in the machine cavity, a machine shell of the driving motor is formed by a wall body of the machine cavity, and the gear speed reduction assembly is arranged on the machine shell. The driving motor is in driving connection with the gear reduction assembly and is in meshed connection with the tooth section through the gear reduction assembly so as to drive the rotating shaft, the rotating cylinder is provided with a locking valve capable of controlling opening and closing of an oil way, the adjusting motor is in driving connection with the adjusting gear assembly, and the adjusting gear assembly can drive the locking valve to control opening and closing of the oil way in a rotating mode. The knee joint bending and stretching device can flexibly bend and stretch the knee joint, can rapidly keep synchronous operation with the bending and stretching operation of the knee joint, is convenient to use, and can effectively prevent the problems of forward bending, leg dragging and the like; the integrated design of the motor and the joint reduces the volume and the weight, reduces the noise and ensures smooth and stable operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a motor joint body and a prosthesis. Background Art

[0002] For people with lower limb disabilities, especially those with thigh amputations, they would like to have a prosthesis with good performance that meets the use requirements, and the performance of the knee joint is the key. For patients with poor residual limb condition or weak muscle strength, or those who need to stand frequently, the prosthetic knee joint needs to have good locking characteristics to meet the needs of standing. For patients with good residual limb condition, strong muscle strength, or those who need to walk frequently, the knee joint needs to have good resistance adjustable characteristics to meet the needs of walking. In particular, some patients require a knee joint that has both locking characteristics that can meet the needs of standing and resistance adjustable characteristics that can meet the needs of walking.

[0003] General prostheses are usually designed as cantilever structures, which have low structural strength and large size, and are prone to problems such as kneeling forward and dragging the legs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a motor joint body and a prosthesis, which are easy to use, can quickly lock the knee joint when bearing weight, and can effectively prevent problems such as kneeling forward and dragging the legs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A motor joint body comprises a thigh connecting piece and a bracket, wherein the thigh connecting piece is connected to a thigh prosthesis, a rotary cylinder is arranged on the bracket, the thigh connecting piece is connected to a rotary shaft of the rotary cylinder, the rotary shaft is connected to an end cover, a tooth segment is arranged on the outer periphery of the end cover, a machine cavity, a driving motor, an adjusting motor, a gear reduction assembly and an adjusting gear assembly are also arranged on the bracket, the driving motor is arranged in the machine cavity, the wall of the machine cavity forms a housing of the driving motor, the driving motor is drivingly connected to the gear reduction assembly and meshingly connected to the tooth segment through the gear reduction assembly to drive the rotary shaft, a locking valve capable of controlling the opening and closing of an oil circuit is arranged on the rotary cylinder, the adjusting motor is drivingly connected to the adjusting gear assembly, and the adjusting gear assembly can drive the locking valve to control the opening and closing of the oil circuit in a rotational manner.

[0007] As a further improvement of the above technical solution:

[0008] The gear reduction assembly includes transmission tooth 1, transmission tooth 2 and transmission tooth 3. The driving shaft of the driving motor is parallel to the rotating shaft. The driving shaft is connected to transmission tooth 1. The transmission tooth 1 is meshed with transmission tooth 2 and transmission tooth 3 in sequence. The transmission tooth 3 is meshed with the tooth segment.

[0009] The bracket is also provided with a gear cover, and the gear cover covers the outer side of the gear reduction assembly.

[0010] The adjusting gear assembly is connected with a threaded part and can drive the threaded part to rotate. The locking valve is provided with a threaded section. The threaded part is meshed and connected with the threaded section and drives the locking valve to rotate by rotating.

[0011] The bracket is also provided with a shell, and the shell covers the outer side of the bracket.

[0012] The bracket is also provided with a controller, and the end cover is provided with an angle sensor, which is connected to the controller to collect the angle of rotation of the rotary shaft relative to the rotary cylinder. The controller is respectively connected to the driving motor and the regulating motor for control.

[0013] The support is also provided with a pressure sensor, and the thigh connecting piece can abut against the pressure sensor when rotating relative to the support. The pressure sensor is connected to the controller to collect the squeezing force of the thigh connecting piece.

[0014] The bracket is also provided with a battery, which is respectively connected to the driving motor, the regulating motor and the controller and is used to provide power.

[0015] A prosthesis comprises a motor joint body, wherein the bottom end of the motor joint body is sequentially connected with a shank connecting piece and an ankle-foot connecting piece.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model enables the wearer to flex and extend the knee joint flexibly and quickly keep synchronization with the flexion and extension of the knee joint through a driving motor, an adjusting motor, a gear reduction assembly and an adjusting gear assembly; during flexion and extension, the driving motor and the gear reduction assembly drive the rotary shaft to rotate; during load-bearing, the adjusting motor and the adjusting gear assembly can drive the locking valve to lock the rotary cylinder, thereby providing stable support for the wearer; the utility model is easy to use and can effectively prevent problems such as kneeling forward and dragging legs.

[0018] Through the drive motor, and the reducer formed by the gear reduction assembly, the integrated design of the motor and the joint can reduce the volume and weight, reduce noise, and ensure smooth and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the exploded structure of the motor joint and prosthesis.

[0020] Figure 2 Schematic diagram of the internal structure of the motor joint and the prosthesis.

[0021] Figure 3It is a schematic diagram of the cross-sectional structure of the motor joint and the prosthesis.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the motor joint and the prosthesis.

[0023] Legend:

[0024] 1. Thigh connector; 2. Bracket; 21. Machine cavity; 3. Rotary cylinder; 31. Rotary shaft; 32. End cover; 321. Tooth segment; 33. Locking valve; 331. Threaded segment; 4. Drive motor; 41. Drive shaft; 5. Adjustment motor; 6. Gear reduction assembly; 61. Transmission gear one; 62. Transmission gear two; 63. Transmission gear three; 64. Gear cover; 7. Adjustment gear assembly; 71. Threaded part; 8. Housing; 9. Controller; 91. Angle sensor; 92. Pressure sensor; 93. Battery. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figure 1-Figure 4 As shown, the motor joint body of this embodiment includes a thigh connector 1 and a bracket 2, the thigh connector 1 is connected to the thigh prosthesis, a rotary cylinder 3 is provided on the bracket 2, the thigh connector 1 is connected to the rotary shaft 31 of the rotary cylinder 3, the rotary shaft 31 is connected to an end cover 32, a tooth segment 321 is provided on the outer periphery of the end cover 32, and a machine cavity 21, a driving motor 4, an adjusting motor 5, a gear reduction assembly 6 and an adjusting gear assembly 7 are also provided on the bracket 2, the driving motor 4 is arranged in the machine cavity 21, the wall of the machine cavity 21 forms the housing of the driving motor 4, the driving motor 4 is drivingly connected to the gear reduction assembly 6, and is meshed with the tooth segment 321 through the gear reduction assembly 6 to drive the rotary shaft 31, a locking valve 33 that can control the opening and closing of the oil circuit is provided on the rotary cylinder 3, the adjusting motor 5 is drivingly connected to the adjusting gear assembly 7, and the adjusting gear assembly 7 can drive the locking valve 33 to control the opening and closing of the oil circuit in a rotational manner. The wearer can flex and extend the knee joint flexibly through the driving motor 4, the adjusting motor 5, the gear reduction assembly 6 and the adjusting gear assembly 7, and can quickly keep in sync with the flexion and extension of the knee joint; when flexing and extending, the driving motor 4 and the gear reduction assembly 6 drive the rotary shaft 31 to rotate; when bearing weight, the adjusting motor 5 and the adjusting gear assembly 7 can drive the locking valve 33 to lock the rotary cylinder 3, providing stable support for the wearer; it is easy to use and can effectively prevent problems such as kneeling forward and dragging legs. Through the driving motor 4 and the reducer formed by the gear reduction assembly 6; the integrated design of the motor and the joint reduces the volume and weight, reduces noise, and ensures smooth and stable operation.

[0027] The motor joint body and prosthesis of this embodiment include a thigh connector 1 and a bracket 2, wherein the thigh connector 1 is connected to the thigh prosthesis, a rotary cylinder 3 is provided on the bracket 2, the thigh connector 1 is connected to the rotary shaft 31 of the rotary cylinder 3, a driving motor 4, an adjusting motor 5, a gear reduction assembly 6 and an adjusting gear assembly 7 are also provided on the bracket 2, the rotary shaft 31 is connected to an end cover 32, a tooth segment 321 is provided on the outer periphery of the end cover 32, the driving motor 4 is drivingly connected to the gear reduction assembly 6 and meshingly connected with the tooth segment 321 through the gear reduction assembly 6 to drive the rotary shaft 31, a locking valve 33 capable of controlling the opening and closing of an oil circuit is provided on the rotary cylinder 3, the adjusting motor 5 is drivingly connected to the adjusting gear assembly 7, and the adjusting gear assembly 7 can drive the locking valve 33 to control the opening and closing of the oil circuit in a rotational manner.

[0028] In this embodiment, the gear reduction assembly 6 includes a transmission tooth 1 61, a transmission tooth 2 62 and a transmission tooth 3 63. The driving shaft 41 of the driving motor 4 is parallel to the rotary shaft 31. The driving shaft 41 is connected to the transmission tooth 1 61. The transmission tooth 1 61 is meshed with the transmission tooth 2 62 and the transmission tooth 3 63 in sequence. The transmission tooth 3 63 is meshed with the tooth segment 321. Through the transmission of the transmission tooth 1 61, the transmission tooth 2 62 and the transmission tooth 3 63, the driving motor 4 can be conveniently installed, and the power of the driving motor 4 can effectively drive the rotary shaft 31.

[0029] In this embodiment, a gear cover 64 is further provided on the bracket 2, and the gear cover 64 covers the outer side of the gear reduction assembly 6. The gear cover 64 forms a protective cover.

[0030] In this embodiment, the adjusting gear assembly 7 is connected with a threaded member 71 and can drive the threaded member 71 to rotate. The locking valve 33 is provided with a threaded section 331. The threaded member 71 is meshed and connected with the threaded section 331 and drives the locking valve 33 to rotate by rotating. The adjusting motor 5 can conveniently drive the rotary cylinder 3 through the threaded member 71 and the threaded section 331.

[0031] In this embodiment, a shell 8 is further provided on the bracket 2 , and the shell 8 covers the outer side of the bracket 2 .

[0032] In this embodiment, a controller 9 is also provided on the bracket 2, and an angle sensor 91 is provided on the end cover 32. The angle sensor 91 is connected to the controller 9 to collect the angle of rotation of the rotating shaft 31 relative to the rotating cylinder 3. The controller 9 is respectively controlled and connected to the driving motor 4 and the adjusting motor 5.

[0033] In this embodiment, a pressure sensor 92 is further provided on the bracket 2 , and the thigh connector 1 can abut against the pressure sensor 92 when rotating relative to the bracket 2 . The pressure sensor 92 is connected to the controller 9 to collect the squeezing force of the thigh connector 1 .

[0034] In this embodiment, a battery 93 is further provided on the bracket 2. The battery 93 is respectively connected to the driving motor 4, the regulating motor 5 and the controller 9 and is used to provide power.

[0035] A prosthesis comprises the motor joint body of the embodiment, wherein the bottom end of the motor joint body is sequentially connected with a shank connecting piece and an ankle-foot connecting piece.

[0036] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A motor joint body, comprising a thigh connection member (1) and a bracket (2), wherein the thigh connection member (1) is connected to a thigh prosthesis, a rotary cylinder (3) is provided on the bracket (2), and the thigh connection member (1) is connected to a rotary shaft (31) of the rotary cylinder (3), characterized in that: The rotary shaft (31) is connected to an end cover (32), and a tooth segment (321) is provided on the outer periphery of the end cover (32). The bracket (2) is also provided with a machine cavity (21), a drive motor (4), an adjustment motor (5), a gear reduction assembly (6), and an adjustment gear assembly (7). The drive motor (4) is arranged in the machine cavity (21), and the wall of the machine cavity (21) forms a housing of the drive motor (4). The drive motor (4) is drivingly connected to the gear reduction assembly (6), and is meshingly connected to the tooth segment (321) through the gear reduction assembly (6) to drive the rotary shaft (31). The rotary cylinder (3) is provided with a locking valve (33) capable of controlling the opening and closing of an oil circuit. The adjustment motor (5) is drivingly connected to the adjustment gear assembly (7), and the adjustment gear assembly (7) can drive the locking valve (33) to control the opening and closing of the oil circuit in a rotational manner.

2. The motor joint according to claim 1, characterized in that: The gear reduction assembly (6) comprises a transmission tooth 1 (61), a transmission tooth 2 (62) and a transmission tooth 3 (63); the drive shaft (41) of the drive motor (4) is parallel to the rotary shaft (31); the drive shaft (41) is connected to the transmission tooth 1 (61); the transmission tooth 1 (61) is meshedly connected to the transmission tooth 2 (62) and the transmission tooth 3 (63) in sequence; and the transmission tooth 3 (63) is meshedly connected to the tooth segment (321).

3. The motor joint according to claim 2, characterized in that: The bracket (2) is also provided with a gear cover (64), and the gear cover (64) covers the outer side of the gear reduction assembly (6).

4. The motor joint according to claim 2, characterized in that: The adjusting gear assembly (7) is connected to a threaded member (71) and can drive the threaded member (71) to rotate; the locking valve (33) is provided with a threaded section (331); the threaded member (71) is meshedly connected to the threaded section (331) and drives the locking valve (33) to rotate by rotating.

5. The motor joint according to claim 1, characterized in that: The support (2) is also provided with an outer shell (8), and the outer shell (8) covers the outer side of the support (2).

6. The motor joint according to claim 1, characterized in that: The bracket (2) is also provided with a controller (9), and the end cover (32) is provided with an angle sensor (91). The angle sensor (91) is connected to the controller (9) to collect the angle of rotation of the rotary shaft (31) relative to the rotary cylinder (3). The controller (9) is respectively connected to the drive motor (4) and the adjustment motor (5).

7. The motor joint according to claim 6, characterized in that: The support (2) is also provided with a pressure sensor (92), and the thigh connecting member (1) can abut against the pressure sensor (92) when rotating relative to the support (2). The pressure sensor (92) is connected to the controller (9) to collect the squeezing force of the thigh connecting member (1).

8. The motor joint according to claim 7, characterized in that: The bracket (2) is also provided with a battery (93), and the battery (93) is respectively connected to the driving motor (4), the regulating motor (5) and the controller (9) and is used to provide power.

9. A prosthesis, characterized in that: It comprises a motor joint body as described in any one of claims 1 to 8, wherein the bottom end of the motor joint body is sequentially connected to a calf connector and an ankle-foot connector.

Images