Ankle joint rehabilitation training device

Abstract

This invention discloses an ankle joint rehabilitation training device, including a drive component, a left foot component, a right foot component, and a base. The drive component includes a left cylindrical cam and a drive motor. The drive motor and a belt transmission mechanism are connected to the right cylindrical cam. The adjustment motor is connected to the right cylindrical cam via an electromagnetic clutch and a belt transmission mechanism. The right foot component includes a right foot rest and a right connecting shaft. The right end of the right connecting shaft slides in the cam groove of the right cylindrical cam. The left end of the right connecting shaft is fixed to a right slider. The right slider fixes one L-shaped end of a right connecting rod. The other L-shaped end of the right connecting rod is slidably connected to a right bracket in the front-back direction. The right foot rest is fixed on the right bracket. The left foot component and the right foot component are arranged symmetrically. The right bracket is rotatably mounted on the right end of a fixed shaft, which is fixed to the base. This allows the patient's two feet to move in opposite directions or in the same direction synchronously, improving the ankle joint rehabilitation effect.

Description

Technical Field

[0001] This invention belongs to the field of rehabilitation medical device technology, and specifically relates to an ankle joint rehabilitation training device. Background Technology

[0002] With my country's aging population becoming increasingly prominent, the potential problems of ankle joint movement difficulties caused by stroke, traumatic brain injury, or accidental injury are becoming more and more obvious, seriously affecting patients' quality of life. Among the existing rehabilitation training devices, most are knee joint training products, with relatively few ankle joint training devices, and the cost of manufacturing them is relatively high, resulting in high rehabilitation training costs, which is not economically friendly to patients and has poor practical effects.

[0003] The existing patent number 202221074107.7 provides an ankle joint care device that can provide cold compress and reduce swelling to the ankle joint, but it cannot achieve the exercise rehabilitation training of the patient's gait with the front and back of both feet in the same direction or stepping in opposite directions at the same time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to solve the following technical problem: providing an ankle joint rehabilitation training device with a cylindrical cam on each side, wherein the rotation of the two cylindrical cams drives the footrests on both sides to swing synchronously and in opposite directions around a fixed horizontal axis, mimicking the movement of the ankle joint during human walking; or adjusting a cylindrical cam to rotate 180 degrees to synchronously and in the same direction change the height of the footrests on both sides, thereby synchronously and in the same direction change the height of the ankle joint.

[0005] The technical solution adopted in this invention is as follows: An ankle joint rehabilitation training device includes a drive component 2, a left foot component and a right foot component, and a base 4. The drive component 2 includes a left cylindrical cam 201, a drive motor 203, an adjustment motor 205, and a right cylindrical cam 211. The drive motor 203 is connected to the right cylindrical cam 211 through a belt transmission mechanism. A one-way bearing 207 fixed on the drive motor 203 is connected to the left cylindrical cam 201 through a belt transmission structure. The adjustment motor 205 is connected to an adjustment pulley 210 through an electromagnetic clutch 209. The adjustment pulley 210 is connected to the right cylindrical cam 211 through a belt transmission mechanism. The cam structure of the left cylindrical cam 201 and the right cylindrical cam 211 is the same, both being cylindrical cam groove structures with their ends connected. The right foot component includes a right foot rest 301, a right slider 303, and a right connecting shaft 305. The right end of the right connecting shaft 305 slides in the cam groove of the right cylindrical cam 211, and the left end of the right connecting shaft 305 is fixed to the right slider 303. The base 4 is provided with a vertical sliding support structure for the right slider 303. The right slider 303 is fixed to one L-shaped end of the right connecting rod 306, and the other L-shaped end of the right connecting rod 306 is slidably connected to the right bracket 302 in the front-back direction. The right foot rest 301 is fixed on the right bracket 302. The left foot component and the right foot component are arranged symmetrically. The right bracket 302 is rotatably mounted on the right end of the fixed shaft 404, and the fixed shaft 404 is fixed on the base 1.

[0006] Preferably, the transmission ratio of the belt drive mechanism connecting the drive motor 203 to the left cylindrical cam 201 is equal to the transmission ratio of the belt drive mechanism connecting the drive motor 203 to the right cylindrical cam 201.

[0007] Preferably, a right rolling bearing 304 is installed at the right end of the right connecting shaft 305, and the right rolling bearing 304 rolls and slides in the cam groove inside the right cylindrical cam 211.

[0008] Preferably, an upper drive wheel 212 is fixed to the upper part of the output shaft of the drive motor 203. The upper drive wheel 212 forms a belt drive with the right driven pulley fixed to the lower end of the right cylindrical cam 211 via the right synchronous belt 204. A one-way bearing 207 is fixed to the lower end of the output shaft of the drive motor 203. The one-way bearing 207 fixes the lower drive wheel 208. The lower drive wheel 208 forms a belt drive with the left driven pulley fixed to the lower end of the left cylindrical cam 201 via the left synchronous belt 202. The input end of the electromagnetic clutch 209 is fixed to the lower end of the adjusting motor 205. The output end of the electromagnetic clutch 209 is fixed to the adjusting pulley 210. The adjusting pulley 210 forms a belt drive with the adjusting synchronous pulley fixed to the lower end of the right cylindrical cam 211 via the adjusting synchronous belt 206. The base 4 is provided with a rotation support structure for the left cylindrical cam 201 and the right cylindrical cam 211. The electromagnetic clutch 209 is fixed to the base 1.

[0009] Preferably, when the adjusting motor 205 rotates and drives the right cylindrical cam 211 to rotate, the output shaft of the drive motor 203 is separated from the lower drive wheel 208 through the one-way bearing 207.

[0010] Preferably, the base 4 includes a support plate 401, a left cam seat 402, a fixed shaft 404, and a right cam seat 407. The left cam seat 402, left slide rail 403, fixed shaft seat 405, right slide rail 406, right cam seat 407, adjustment motor seat 408, and drive motor seat 409 are all fixed on the support plate 401. The middle part of the fixed shaft 404 is fixed on the fixed shaft seat 405. The lower end of the left cylindrical cam 201 is rotatably mounted on the left cam seat 402, and the lower end of the right cylindrical cam 211 is rotatably mounted on the right cam seat 407. The adjustment motor seat 408 fixes the adjustment motor 205, the drive motor seat 409 fixes the drive motor 203, and the outer shell of the electromagnetic clutch 209 is fixed on the support plate 401.

[0011] Compared with the prior art, the present invention has the following advantages: An ankle joint rehabilitation training device employs a left and right footrest component with identical distribution and structure on both sides of cylindrical camshafts. The drive motor and adjustment motor rotate in opposite directions and do not operate simultaneously. When the initial phase of the cam grooves on the left and right cylindrical camshafts is 180 degrees apart along the circumference, the drive motor operates, causing the two cylindrical cams to rotate and drive the footrests on both sides to reciprocate around a fixed axis, mimicking the movement of the ankle joint during human walking. When the adjustment motor rotates and the electromagnetic clutch is engaged, the right cylindrical cam rotates. At this time, under the action of a one-way bearing, the left cylindrical cam is stationary while the right cylindrical cam rotates. The initial phase of the cam grooves on both sides of the cylindrical camshafts is the same, providing synchronous, same-direction pitching training for both ankle joints. This adapts to the patient's needs for training at different ankle angles, improving the comfort and experience of rehabilitation training, and offering advantages such as ease of adjustment and maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure of the left and right cylindrical cams driven by the present invention.

[0014] Figure 3 This is a schematic diagram of the installation structure of the drive motor, one-way bearing, and lower drive wheel of the present invention.

[0015] Figure 4 This is a schematic diagram of the installation structure of the adjusting motor, electromagnetic clutch, and adjusting pulley in this invention.

[0016] Figure 5 This is a schematic diagram of the footrest component of the present invention.

[0017] Figure 6 This is a schematic diagram of the base structure of the present invention.

[0018] Reference numerals: Seat 1, Drive component 2, Footrest component 3, Base 4, Left cylindrical cam 201, Left synchronous belt 202, Drive motor 203, Right synchronous belt 204, Adjusting motor 205, Adjusting synchronous belt 206, One-way bearing 207, Lower drive wheel 208, Electromagnetic clutch 209, Adjusting pulley 210, Right cylindrical cam 211, Upper drive wheel 212, Right footrest 301, Right bracket 302, Right slider 303, Right rolling bearing 304, Right connecting shaft 305, Right connecting rod 306, Support plate 401, Left cam seat 402, Left slide rail 403, Fixed shaft 404, Fixed shaft seat 405, Right slide rail 406, Right cam seat 407, Adjusting motor seat 408, Drive motor seat 409. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] Combination Figure 1-6 An ankle joint rehabilitation training device includes a seat 1, a drive component 2, a footrest component 3, and a base 4. The seat 1 has a symmetrical structure. The up-down, left-right, and front-back directions of this application are defined by the patient sitting on the seat. The drive component 2 includes a left cylindrical cam 201, a left synchronous belt 202, a drive motor 203, a right synchronous belt 204, an adjusting motor 205, an adjusting synchronous belt 206, a one-way bearing 207, a lower drive wheel 208, an electromagnetic clutch 209, an adjusting pulley 210, a right cylindrical cam 211, and an upper drive wheel 212. The upper drive wheel 212 is fixed to the upper part of the output shaft of the drive motor 203, and the lower drive wheel 208 is fixed to the lower part of the output shaft of the motor 203 through the one-way bearing 207. The upper drive wheel 212 forms a belt with the right driven pulley fixed to the lower end of the right cylindrical cam 211 through the right synchronous belt 204. In the transmission, the lower drive wheel 208 forms a belt drive with the left driven wheel fixed at the lower end of the left cylindrical cam 201 via the left synchronous belt 202. The gear ratio between the lower drive wheel 208 and the left driven pulley is equal to the transmission ratio between the upper drive wheel 212 and the right driven pulley. The cam structures of the left cylindrical cam 201 and the right cylindrical cam 211 are the same, both being cylindrical cam groove structures with their ends connected. The lower end of the adjusting motor 205 is fixed to the input end of the electromagnetic clutch 209, and the output end of the electromagnetic clutch 209 is fixed to the adjusting pulley 210. The adjusting pulley 210 forms a belt drive with the adjusting synchronous pulley fixed at the lower end of the right cylindrical cam 211 via the adjusting synchronous belt 206.

[0021] The footrest component 3 includes a left foot component and a right foot component. The left foot component and the right foot component are symmetrically arranged about the left and right symmetrical planes of the seat 1. The right foot component includes a right footrest 301, a right bracket 302, a right slider 303, a right rolling bearing 304, a right connecting shaft 305, and a right connecting rod 306. The right connecting rod 306 is L-shaped. One end of the L-shaped right connecting rod 306 is fixed to the right slider 303, and the other end of the L-shaped right connecting rod 306 is slidably connected to the right bracket 302 in the front-back direction. 02 The upper end is fixed with a right foot support 301. The right slider 303 is slidably mounted on the right slide rail 406. The right slide rail 406 is set vertically along the up and down direction. The right slider 303 is fixed with a right connecting shaft 305 on the right side. The right end of the right connecting shaft 305 is equipped with a right rolling bearing 304. The right rolling bearing 304 rolls and slides in the cam groove inside the right cylindrical cam 211. The right bracket 302 is rotatably connected to the right end of the fixed shaft 404. The fixed shaft 404 is fixed on the fixed shaft seat 405.

[0022] The base 4 further includes a support plate 401, a left cam seat 402, a left slide rail 403, a fixed shaft 404, a fixed shaft seat 405, a right slide rail 406, a right cam seat 407, an adjusting motor seat 408, and a drive motor seat 409. The left cam seat 402, left slide rail 403, fixed shaft seat 405, right slide rail 406, right cam seat 407, adjusting motor seat 408, and drive motor seat 409 are all fixed to the support plate 401. The fixed shaft 404... The component is fixed on the bearing seat 405. The lower end of the left cylindrical cam 201 is rotatably mounted on the left cam seat 402, and the lower end of the right cylindrical cam 211 is rotatably mounted on the right cam seat 407. The adjusting motor seat 408 fixes the adjusting motor 205, and the drive motor seat 409 fixes the drive motor 203. The outer shell of the electromagnetic clutch 209 is fixed on the support plate 401. The left slider of the left foot component is slidably mounted on the left slide rail 403, and the left slide rail 403 is set vertically along the up and down direction.

[0023] The specific working process of this invention is as follows: When a patient has ankle joint dysfunction and requires rehabilitation training, the adjustment motor 205 is rotated according to the patient's ankle joint movement. The electromagnetic clutch 209 is engaged, and its rotation direction is opposite to that of the drive motor 203 during rehabilitation training. At this time, the adjustment motor 205 rotates in the opposite direction to the drive motor 203, which is separated from the output shaft via the one-way bearing 207. Therefore, only the right cylindrical cam 211 rotates. When the right rolling bearing in the cam groove of the right cylindrical cam 211 is at its upper limit position, and the left rolling bearing in the cam groove of the left cylindrical cam 201 is at its lower limit position, the adjustment motor 205 stops rotating, the electromagnetic clutch 209 disengages, and the drive motor... When cam 203 rotates in the opposite direction, it drives the right cylindrical cam 211 and the left cylindrical cam 201 to rotate in the same direction, causing the patient's feet to change height forward and backward during gait, thus performing gait rehabilitation training for the ankle joint. If the control motor 205 rotates, the electromagnetic clutch 209 is engaged, and the right rolling bearing in the cam groove of the right cylindrical cam 211 is at its upper limit position, while the left rolling bearing in the cam groove of the left cylindrical cam 201 is at its upper limit position, the drive motor 203 is controlled to rotate in the opposite direction, and the electromagnetic clutch 209 is disengaged, causing the right cylindrical cam 211 and the left cylindrical cam 201 to rotate in the same direction, thus simultaneously changing the height of the front and back of the patient's feet, thus performing ankle joint rehabilitation training.

Claims

1. An ankle rehabilitation training device, characterized by: The system includes a drive component (2), a left foot component, a right foot component, and a base (4). The drive component (2) includes a left cylindrical cam (201), a drive motor (203), an adjustment motor (205), and a right cylindrical cam (211). The drive motor (203) is connected to the right cylindrical cam (211) via a belt drive mechanism. A one-way bearing (207) fixed on the drive motor (203) is connected to the left cylindrical cam (201) via a belt drive structure. The adjustment motor (205) is connected to the adjustment pulley (210) via an electromagnetic clutch (209). The adjustment pulley (210) is connected to the right cylindrical cam (211) via a belt drive mechanism. The cam structures of the left cylindrical cam (201) and the right cylindrical cam (211) are the same, both being cylindrical cam slot structures with their ends connected. The structure includes a right foot support (301), a right slider (303), and a right connecting shaft (305). The right end of the right connecting shaft (305) slides in the cam groove of the right cylindrical cam (211). The left end of the right connecting shaft (305) is fixed on the right slider (303). The base (4) is provided with a sliding support structure for the right slider (303) in the up and down direction. The right slider (303) is fixed to one L-shaped end of the right connecting rod (306). The other L-shaped end of the right connecting rod (306) is slidably connected to the right bracket (302) in the front and back direction. The right foot support (301) is fixed on the right bracket (302). The left foot component and the right foot component are arranged symmetrically. The right bracket (302) is rotatably installed on the right end of the fixed shaft (404). The fixed shaft (404) is fixed on the base (1). The left and right footrest components are arranged with the same distribution and structure of cylindrical camshafts on both sides. The drive motor (203) and the adjustment motor (205) rotate in opposite directions and do not work at the same time. When the initial phase of the cam grooves of the left and right cylindrical camshafts is 180 degrees apart along the circumference, the drive motor (203) works to make the cylindrical cams on both sides rotate and drive the footrests on both sides to pitch and reciprocate around the fixed axis, mimicking the movement of the ankle joint during human walking. When the adjustment motor (205) rotates and the electromagnetic clutch (209) is engaged, the right cylindrical cam (211) is adjusted to rotate, while the left cylindrical cam (201) is stationary. The right cylindrical cam (211) rotates, and the initial phase of the cam grooves of the left and right cylindrical camshafts is the same, so that the ankle joints on both sides can be trained to pitch and retract synchronously in the same direction.

2. The ankle rehabilitation training device according to claim 1, characterized in that: The transmission ratio of the belt drive mechanism connecting the drive motor (203) and the left cylindrical cam (201) is equal to the transmission ratio of the belt drive mechanism connecting the drive motor (203) and the right cylindrical cam (201).

3. The ankle rehabilitation training device according to claim 1, wherein: A right rolling bearing (304) is installed at the right end of the right connecting shaft (305), and the right rolling bearing (304) rolls and slides in the cam groove of the right cylindrical cam (211).

4. The ankle rehabilitation training device according to claim 1, wherein: An upper drive wheel (212) is fixed to the upper part of the output shaft of the drive motor (203). The upper drive wheel (212) is connected to the right driven pulley fixed to the lower end of the right cylindrical cam (211) via the right synchronous belt (204) to form a belt drive. A one-way bearing (207) is fixed to the lower end of the output shaft of the drive motor (203). The one-way bearing (207) also fixes the lower drive wheel (208). The lower drive wheel (208) is connected to the left driven pulley fixed to the lower end of the left cylindrical cam (201) via the left synchronous belt (202). The belt drive is formed by fixing the input end of the electromagnetic clutch (209) at the lower end of the adjusting motor (205), fixing the output end of the electromagnetic clutch (209) to the adjusting pulley (210), and the adjusting pulley (210) forms a belt drive with the adjusting synchronous pulley fixed at the lower end of the right cylindrical cam (211) through the adjusting synchronous belt (206). The base (4) is provided with a rotating support structure for the left cylindrical cam (201) and the right cylindrical cam (211), and the electromagnetic clutch (209) is fixed on the base (1).

5. The ankle rehabilitation training device according to claim 4, wherein: When the adjustment motor (205) rotates and drives the right cylindrical cam (211) to rotate, the output shaft of the drive motor (203) is separated from the lower drive wheel (208) through the one-way bearing (207).

6. The ankle rehabilitation training device according to any one of claims 1-5, characterized in that: The base (4) includes a support plate (401), a left cam seat (402), a fixed shaft (404), and a right cam seat (407). The left cam seat (402), the left slide rail (403), the fixed shaft seat (405), the right slide rail (406), the right cam seat (407), the adjusting motor seat (408), and the drive motor seat (409) are all fixed on the support plate (401). The middle part of the fixed shaft (404) is fixed on the fixed shaft seat (405). The lower end of the left cylindrical cam (201) is rotatably mounted on the left cam seat (402), and the lower end of the right cylindrical cam (211) is rotatably mounted on the right cam seat (407). The adjusting motor seat (408) fixes the adjusting motor (205), and the drive motor seat (409) fixes the drive motor (203). The outer shell of the electromagnetic clutch (209) is fixed on the support plate (401).

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