Finger joint passive training device

Abstract

A finger joint passive training device comprises a bottom plate, a motor is fixedly installed on the bottom plate, the motor is provided with a controller, and the finger joint passive training device is characterized in that a length adjusting rod is fixedly connected to an output shaft of the motor, and the length of the length adjusting rod can be adjusted in the radial direction of the output shaft of the motor; the telescopic adjusting end is connected with a non-rotation guide rail piece in the horizontal left-right direction, sliding holes matched with the non-rotation guide rail piece are formed in the four sliding blocks, the sliding blocks are in sliding fit with the non-rotation guide rail piece through the sliding holes, each sliding block is provided with a non-rotation hole, an L-shaped rod is arranged in each non-rotation hole in a sliding and penetrating mode, and the L-shaped rod is connected with the telescopic adjusting end. And the transverse edge of the L-shaped rod is matched with the rotation hole, the transverse edge of the L-shaped rod is arranged in the non-rotation hole in a sliding and penetrating mode, a finger fixing plate is hinged to the vertical edge of the L-shaped rod, and an arm support is further fixedly connected to the rack. The training device is relatively simple in structure and high in adaptability to different patients during training.

Description

Technical Field

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

[0002] Hand dysfunction is a common limb movement disorder after stroke. In order to enable patients to maintain and achieve all or part of their hand functions, when patients are unable to perform autonomous activities, relevant equipment is needed to assist patients in passive training to maintain the joint and muscle functions of patients. There are also various devices for finger joint training in Chinese patent applications. These devices can be divided into two categories. One is an inflatable and deflatable glove device, which requires a gas pump, and the exercise is mainly reflected in the inflation and stretching stage, and the training effect in the finger retraction stage is not good. The other is mechanical, which can generally drive the fingers to open and retract. In terms of the mechanical type, a finger joint training structure disclosed in Chinese Patent CN213130608U requires multiple motors to drive, and the structure is relatively complex; CN221130886U discloses an exoskeleton for finger joint exercise, but it is mainly used for patients who can perform active training; CN220860594U discloses a finger joint activity rehabilitation device, which also mainly provides resistance training; CN220193480U discloses a finger rehabilitation robot, which can provide passive training, but it also has a relatively complex structure and requires more driving power mechanisms. Summary of the Invention

[0003] The purpose of the utility model is to provide a passive finger joint training device.

[0004] To achieve the purpose of the utility model, the following technical solution is adopted: A passive finger joint training device includes a bottom plate, on which a motor is fixedly installed, and the motor is configured with a controller. It is characterized in that: a length adjustment rod is fixedly connected to the output shaft of the motor, and the length adjustment rod can adjust its length along the radial direction of the motor output shaft; at the end of the telescopic adjustment, a non-rotating guide rail member in the horizontal left-right direction is connected, and four sliders are provided with sliding holes adapted to the non-rotating guide rail member, and the sliders are slidably fitted on the non-rotating guide rail member through the sliding holes. A non-rotating hole is provided in each slider, and an L-shaped rod is slidably inserted through each non-rotating hole. The horizontal side of the L-shaped rod is adapted to the rotating hole, and the horizontal side of the L-shaped rod is slidably inserted through the non-rotating hole. A finger fixing plate is hinged to the vertical side of the L-shaped rod, and an armrest is also fixedly connected to the frame.

[0005] Furthermore, a fixed disk is fixedly connected to the output shaft of the motor, an insertion hole is axially provided along the radial direction of the fixed disk, the length adjustment rod is slidably inserted into the insertion hole, and an axial screw hole is provided on the end face of the fixed disk, and a set screw is screwed into the screw hole.

[0006] Further, the armrest is fixedly connected to the armrest plate, the armrest plate is fixedly connected to the armrest bracket, the armrest bracket is fixedly connected to the bottom plate. Three long holes A distributed in a triangle and extending in the left - right direction are formed on the bottom plate, and connection holes A corresponding to the long holes A are formed on the bottom plate. The armrest bracket and the bottom plate are fixedly connected through bolts passing through the long holes A and the connection holes A and nuts screwed onto the bolts. Three long holes B distributed in a triangle and extending in the front - back direction are formed on the armrest bracket, and connection holes B corresponding to the long holes B are formed on the armrest plate. The armrest plate and the armrest are fixedly connected through bolts passing through the long holes B and the connection holes B and nuts screwed onto the bolts.

[0007] Further, the finger fixing plate is a trapezoidal groove with an upward opening, and the bottom angles of the trapezoidal groove are obtuse angles.

[0008] The positive and beneficial technical effects of the present utility model are as follows: The structure of this training device is relatively simple, and it has strong adaptability to different patients during training. Description of the Drawings

[0009] Figure 1 is the overall schematic diagram of the present utility model.

[0010] Figure 2 is the partial enlarged view of the present utility model.

[0011] Figure 3 is the schematic diagram of the long holes extending in the left - right direction formed on the bottom plate. Detailed Description of the Embodiment

[0012] 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 for the elaboration of the present utility model and do not limit the scope of the present utility model.

[0013] With reference to the drawings, the present utility model is further explained in detail. The reference numerals in the drawings are: 1: bottom plate; 2: motor; 3: fixed disk; 4: length adjustment rod; 5: setscrew; 6: non - rotating guide member; 7: slider; 8: L - shaped rod; 9: finger fixing plate; 10: armrest bracket; 11: armrest plate; 12: armrest; 13: long hole A.

[0014] As shown in the attached drawings, a passive finger joint training device includes a bottom plate 1. A motor 2 is fixedly installed on the bottom plate. The motor is equipped with angle control. For example, a servo motor can be used, which can conveniently control the rotation angle of the motor. Alternatively, a currently mature rotary encoder can be used to control the rotation angle of the motor. The motor is configured with a controller. A fixed disk 3 is fixedly connected to the output shaft of the motor. Insertion holes are radially formed in the fixed disk. A length adjustment rod 4 is slidably inserted into the insertion holes. A axial screw hole is formed on the end face of the fixed disk. A set screw 5 is screwed into the screw hole. Loosening the set screw can adjust the protruding length of the length adjustment rod along the radial direction of the motor output shaft. By adjusting the length of the length adjustment rod, the height of the training part can be adjusted to meet the needs of different patients.

[0015] A non-rotating guide rail member 6 in the horizontal left-right direction is connected to the end of the telescopic adjustment. In this embodiment, the non-rotating guide rail member uses a guide rail with a square cross-section. Four sliders 7 are provided with sliding holes adapted to the non-rotating guide rail member. The sliders also have square holes. The sliders are slidably fitted on the non-rotating guide rail member through the sliding holes. In this way, the sliders can only move along the direction of the guide rail, and the sliders can freely slide on the guide rail during training.

[0016] A non-rotating hole is formed in each slider. The non-rotating hole also uses a square hole. An L-shaped rod 8 is slidably inserted through each non-rotating hole. The horizontal side of the L-shaped rod is adapted to the rotating hole. The horizontal side of the L-shaped rod is also a square rod. The horizontal side of the L-shaped rod is slidably inserted through the non-rotating hole. A finger fixing plate 9 is hinged to the vertical side of the L-shaped rod. During training, the L-shaped rod can freely slide in the non-rotating hole on the slider. The finger fixing plate is a trapezoidal groove with an upward opening. The bottom angle of the trapezoid is an obtuse angle. In this way, the palm fixing plate can better adapt to the finger joints. During training, the fingers are fixed on the finger fixing plate through straps.

[0017] An armrest 12 is also fixedly connected to the frame. The armrest 12 is fixedly connected to an armrest plate 11. The armrest plate 11 is fixedly connected to an armrest bracket 10. The armrest bracket 10 is fixedly connected to the bottom plate 1. Three long holes A 13 in the left-right direction and distributed in a triangle are formed on the bottom plate. Connection holes A corresponding to the long holes A are formed on the bottom plate. The armrest bracket and the bottom plate are fixedly connected by bolts inserted through the long holes A and the connection holes A and nuts screwed onto the bolts. Three long holes B in the front-back direction and distributed in a triangle are formed on the armrest bracket. Connection holes B corresponding to the long holes B are formed on the armrest plate. The armrest plate and the armrest are fixedly connected by bolts inserted through the long holes B and the connection holes B and nuts screwed onto the bolts. The long holes B are similar to the long holes A and are not marked in the figure again.

[0018] This finger joint trainer has a reliable structure, can achieve continuous passive training, is easy to operate, and is convenient for popularization and application. By setting the forward and reverse rotation angles of the motor, training in different angular ranges of the finger joints can be achieved, so as to improve the range of motion of the finger joints, enhance the coordination, flexibility and movement speed of the joints, and thus improve the motor function of the finger joints.

[0019] After the embodiments of the present invention are described 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 invention all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments described in the specification either.

Claims

1. A passive finger joint training device, comprising a bottom plate, on which a motor is fixedly installed, and the motor is configured with a controller, characterized in that: A length adjustment rod is fixedly connected to the output shaft of the motor. The length adjustment rod can adjust its length along the radial direction of the motor output shaft. A non-rotating guide rail member in the horizontal left-right direction is connected to the end of the telescopic adjustment. Sliding holes adapted to the non-rotating guide rail member are provided in four sliders. The sliders are slidably fitted on the non-rotating guide rail member through the sliding holes. A non-rotating hole is provided in each slider, and an L-shaped rod is slidably inserted through each non-rotating hole. The horizontal side of the L-shaped rod is adapted to the rotating hole, and the horizontal side of the L-shaped rod is slidably inserted through the non-rotating hole. A finger fixing plate is hinged to the vertical side of the L-shaped rod, and an armrest is also fixedly connected to the frame.

2. The passive finger joint training device according to claim 1, wherein: A fixed disk is fixedly connected to the output shaft of the motor. Insertion holes are provided along the radial direction of the fixed disk, and the length adjustment rod is slidably inserted into the insertion holes. An axial screw hole is provided on the end face of the fixed disk, and a set screw is screwed into the screw hole.

3. The passive finger joint training device according to claim 1, characterized in that: The armrest is fixedly connected to an armrest bracket, and the armrest bracket is fixedly connected to the bottom plate. Three long holes A in the left-right direction and distributed in a triangular shape are provided on the bottom plate. Connecting holes A corresponding to the long holes A are provided on the bottom plate. The armrest bracket and the bottom plate are fixedly connected by bolts inserted through the long holes A and the connecting holes A and nuts screwed onto the bolts. Three long holes B in the front-rear direction and distributed in a triangular shape are provided on the armrest bracket. Connecting holes B corresponding to the long holes B are provided on the armrest. The armrest and the armrest are fixedly connected by bolts inserted through the long holes B and the connecting holes B and nuts screwed onto the bolts.

4. The passive finger joint training device according to claim 1, characterized in that: The finger fixing plate is a trapezoidal groove with an upward opening, and the bottom angles of the trapezoid are obtuse angles.

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