Wrist joint training device

Abstract

A wrist joint training device comprises a rack, an arm support and a grip, the arm support is fixedly installed on the rack, a first motor is installed on the rack, an L-shaped driving arm is installed on an output shaft of the first motor, the horizontal edge of the L-shaped driving arm is defined to be in the horizontal front-back direction, and the vertical edge of the L-shaped driving arm is defined to be in the vertical direction. The end of the horizontal side of the L-shaped driving arm is rotated to be connected to an output shaft of the first motor, the vertical side of the L-shaped driving arm is located on the upper portion of the horizontal side, a second motor is fixedly installed at the upper end of the vertical side, the driving arm is fixedly installed on the output end of the second motor, and a base is fixedly installed at the end of the driving arm. A sliding block is installed on the sliding rail in a matched mode, a locking mechanism is arranged between the sliding block and the sliding rail, the grip base is fixedly connected to the sliding block, and the grip is fixedly connected to the grip base. The device is simple in structure and small in occupied area.

Description

Technical Field

[0001] The utility model relates to rehabilitation training equipment, in particular to a wrist joint training device, belonging to the technical field of rehabilitation training equipment. Background Art

[0002] Wrist joint rehabilitation training is a common training subject, and there are also various devices for wrist rehabilitation training in actual training. For example, the wrist joint rehabilitation training device disclosed in Chinese Patent CN114081796A has a large volume and is mainly used for flexion and extension training of the wrist. The wrist joint rehabilitation training device disclosed in Chinese Patent CN107928986B has more functions, but has a large volume, a complex structure and a high cost. A finger and wrist joint rehabilitation training device disclosed in CN105310863A also has a complex structure, a large volume and a high cost, and the above devices can only be used alone and cannot be integrated into related training equipment, and separate arrangements are required on the training ground. Summary of the Invention

[0003] The purpose of the utility model is to overcome the above problems existing in the current wrist joint training, and provide a wrist joint training device.

[0004] To achieve the purpose of the utility model, the following technical scheme is adopted: A wrist joint training device includes a frame, an armrest, and a grip. The armrest is fixedly installed on the frame. A first motor is installed on the frame. An L-shaped driving arm is installed on the output shaft of the first motor. Define the horizontal side of the L-shaped driving arm as the horizontal front-back direction and the vertical side as the up-down direction. The end of the horizontal side of the L-shaped driving arm is connected to the output shaft of the first motor. The vertical side is located above the horizontal side. A second motor is fixedly installed at the upper end of the vertical side. A driving arm is fixedly installed on the output of the second motor. A base is fixedly installed at the end of the driving arm. A front-back direction slide rail is fixedly installed on the base. A slider is fitted on the slide rail. There is a locking mechanism between the slider and the slide rail. A grip seat is fixedly connected to the slider, and a grip is fixedly connected to the grip seat.

[0005] Furthermore, the first motor is fixedly connected to a fixed sleeve. A limit protrusion is fixedly connected to the end face of the fixed sleeve. A non-closed annular groove centered on the output shaft of the first motor is formed on the surface of the L-shaped driving arm corresponding to the limit protrusion. The limit protrusion is located in the non-closed annular groove. The second motor is fixed on an installation sleeve. A plurality of radial limit indexing holes are formed on the installation sleeve. The limit indexing holes are threaded holes. Limit bolts are screwed into two of the threaded holes. An inner sleeve is fixedly connected to the end of the driving arm. The inner sleeve is fixedly connected to the output shaft of the second motor. The inner sleeve is located inside the installation sleeve. An axial limit column is fixedly connected to the inner sleeve. After the limit column rotates to the position of the limit bolt, the two interfere with each other.

[0006] The positive and beneficial technical effects of the present utility model are as follows: The device has a simple structure and occupies a small area. It can be used independently and can also be connected to other upper limb training devices, with good safety. It will be described in detail in combination with the specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is the overall schematic diagram of the present utility model.

[0008] Figure 2 is the schematic diagram of the grip part.

[0009] Figure 3 is the schematic diagram of the limit protrusion on the fixed sleeve.

[0010] Figure 4 is the schematic diagram of the non-closed annular groove.

[0011] Figure 5 is the schematic diagram of the limit post on the inner sleeve.

[0012] Figure 6 is the schematic diagram of the limit indexing hole on the mounting sleeve. SPECIFIC EMBODIMENTS

[0013] In order to more fully explain the implementation of the present utility model, implementation examples of the present utility model are provided. These implementation examples are only explanations of the present utility model and do not limit the scope of the present utility model.

[0014] With reference to the accompanying drawings, the present utility model will be further explained in detail. The reference numerals in the drawings are: 1: frame; 2: armrest; 3: first motor; 4: limit indexing hole; 5: L-shaped driving arm; 6: second motor; 7: inner sleeve; 8: driving arm; 9: base; 10: slide rail; 11: slider; 12: grip; 13: mounting sleeve; 14: fixed sleeve; 15: limit protrusion; 16: non-closed annular groove; 17: limit post.

[0015] As shown in the accompanying drawings, a wrist joint training device includes a frame 1, an armrest 2, and a grip 12. The armrest 1 is fixedly installed on the frame and can be fixedly connected to other devices through screw holes opened on the frame by bolts, or can be fixedly connected to the mounting surface and used independently as a wrist joint training device.

[0016] A first motor 3 is installed on the frame. In this embodiment, the first motor is fixedly connected to a fixed sleeve 14. A limiting protrusion 15 is fixedly connected to the end face of the fixed sleeve. An unclosed annular groove 16 centered on the output shaft of the first motor is formed on the surface of the L-shaped driving arm corresponding to the limiting protrusion. The limiting protrusion is located in the unclosed annular groove. The unclosed annular groove restricts the limiting protrusion to only rotate therein, thereby restricting the rotation angle of the first motor and ensuring the safety during the operation of the first motor. Even when the first motor is out of control, the limiting protrusion cannot exceed the range of the unclosed limiting groove.

[0017] An L-shaped driving arm 8 is installed on the output shaft of the first motor. Define the horizontal side of the L-shaped driving arm as the horizontal front-back direction and the vertical side as the up-down direction. The above definition is only for the convenience of explanation and does not represent the actual direction during use. The end of the horizontal side of the L-shaped driving arm 8 is rotationally connected to the output shaft of the first motor 3. The vertical side is located above the horizontal side. A second motor 6 is fixedly installed at the upper end of the vertical side. A driving arm 8 is fixedly installed on the output of the second motor. In this embodiment, the second motor 6 is fixed on an installation sleeve 13. A plurality of radial limiting indexing holes 4 are formed on the installation sleeve. The limiting indexing holes are threaded holes. Two of the threaded holes are screwed with limiting bolts. The rotation angle range of the rotation limiting column can be restricted by the two limiting bolts. Figure 6 5 limiting indexing holes are shown in the figure. Actually, more limiting indexing holes can be set to meet the safety needs of different patients. The end of the driving arm 8 is fixedly connected with an inner sleeve 7. The inner sleeve 7 is fixedly connected to the output shaft of the second motor. The inner sleeve 7 is located inside the installation sleeve 13. An axial limiting column 17 is fixedly connected to the inner sleeve. The axial direction refers to the axial direction of the second motor. Interference occurs between the limiting column and the limiting bolt after the limiting column rotates to the position of the limiting bolt. A base 9 is fixedly installed at the end of the driving arm 8. A front-back direction slide rail 10 is fixedly installed on the base 9. In this embodiment, the slide rail is a groove rail. A slider 11 is fitted on the slide rail. A locking mechanism is provided between the slider and the slide rail. The locking mechanism can adopt a set screw hole formed on the side of the groove rail, and the slider is locked by a set screw. A grip seat is fixedly connected to the slider. A grip 12 is fixedly connected to the grip seat. The position of the grip can be adjusted by adjusting the position of the slider to meet the needs of different personnel.

[0018] When the device is used for training, the forearm is supported on the armrest, and the grip is held by hand. The first motor is turned on. The first motor drives the L-shaped driving arm to perform passive training of dorsiflexion / plantar flexion. The limiting range of the unclosed annular groove is set to 125 degrees, which can meet the safety requirements. The second motor is turned on. Whether the first motor is turned on or not, passive training of wrist joint internal rotation / external rotation can be performed, and the rotation range is limited by two limiting bolts.

[0019] After describing the embodiments of the present utility model in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model, and the present utility model is not limited to the embodiments described in the specification either.

Claims

1. A wrist joint training device, comprising a frame, an arm support, and a handle, wherein the arm support is fixedly mounted on the frame, and characterized in that: A first motor is installed on the frame, and an L-shaped driving arm is installed on the output shaft of the first motor. The horizontal side of the L-shaped driving arm is defined as the horizontal front-to-back direction, and the vertical side is defined as the up-and-down direction. The horizontal side end of the L-shaped driving arm is rotated and connected to the output shaft of the first motor, and the vertical side is located at the upper part of the horizontal side. A second motor is fixedly installed on the upper end of the vertical side, and a driving arm is fixedly installed on the output of the second motor. A base is fixedly installed on the end of the driving arm, and a slide rail in the front-to-back direction is fixedly installed on the base. A slider is installed on the slide rail. A locking mechanism is provided between the slider and the slide rail. The handle seat is fixedly connected to the slider, and the handle is fixedly connected to the handle seat.

2. A wrist joint training device according to claim 1, characterized in that: The first motor is fixedly connected to the fixing sleeve, and a limiting protrusion is fixedly connected to the end face of the fixing sleeve. A non-closed annular groove with the output shaft of the first motor as the center is provided on the surface corresponding to the L-shaped driving arm and the limiting protrusion, and the limiting protrusion is located in the non-closed annular groove; the second motor is fixed to the mounting sleeve, and a plurality of radial limiting indexing holes are provided on the mounting sleeve. The limiting indexing holes are threaded holes, and limiting bolts are screwed into two of the threaded holes. An inner sleeve is fixedly connected to the end of the driving arm, and the inner sleeve is fixedly connected to the output shaft of the second motor. The inner sleeve is located in the mounting sleeve, and an axial limiting column is fixedly connected to the inner sleeve. After the limiting column rotates to the limiting bolt, the two interfere with each other.

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