Rehabilitation device conversion adjustment device

Abstract

The application discloses a rehabilitation equipment conversion adjusting device, both sides of a differential housing are respectively provided with a differential front cover plate and a differential rear cover plate; a differential rotating shaft is rotatably arranged between the differential front cover plate and the differential rear cover plate; an arc-shaped slot is formed in the differential housing for a force arm rod to pass through and extend out; a downward pulling exercise assembly is arranged between one side of the force arm rod and the differential rear cover plate, and an upward pulling exercise assembly is arranged between the other side of the force arm rod and the differential front cover plate; a telescopic horizontal bar button is arranged to pass through the differential front cover plate, the horizontal bar button can be extended into the arc-shaped slot and abut against the force arm rod below, and the horizontal bar button can be retracted to a position not reaching the arc-shaped slot; a differential housing support is fixedly arranged at the bottom end of the differential housing, and the differential housing support is connected with a horizontal and vertical conversion seat pin. The rehabilitation equipment conversion adjusting device provided by the application has five rehabilitation exercise functions and the functions can be conveniently switched to fully improve the rehabilitation exercise effect.

Description

Technical Field

[0001] The present invention relates to the technical field of exercise equipment, and in particular to a conversion and adjustment device for rehabilitation equipment. Background Art

[0002] Wheelchairs not only serve as a means of transportation and family care for the injured, sick, and disabled, but also as a form of rehabilitation exercise. Currently, wheelchairs only have a single arm rehabilitation exercise function. To enable rehabilitation exercises in both vertical and horizontal directions and to fully utilize the limited space of a wheelchair, it is necessary to design an exercise function conversion differential. This exercise function conversion differential can be used in both vertical and horizontal directions, and at the same time, it can be equipped with multiple rehabilitation exercise functions that can be easily switched to improve the rehabilitation effect. Summary of the Invention

[0003] In view of this, the present invention proposes a rehabilitation equipment conversion and adjustment device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A rehabilitation equipment conversion and adjustment device includes a differential front cover plate, a differential rear cover plate, a differential shaft, a gear, a differential housing, a differential housing bracket, a horizontal-vertical conversion seat, a pull-down exercise component, a pull-up exercise component, a horizontal bar button, and a lever arm;

[0006] The outer end surfaces of both sides of the differential housing are respectively provided with a differential front cover plate and a differential rear cover plate; the differential shaft is rotatably arranged between the differential front cover plate and the differential rear cover plate, the force arm is sleeved on the differential shaft, and an arc-shaped groove is opened on the differential housing for the force arm to pass through and extend; a gear is provided on the outer end surface of the differential shaft, and the gear is in contact with the outer end surface of the differential rear cover plate; a pull-down exercise component is provided between one side of the force arm and the differential rear cover plate, and the force arm is sleeved on the differential shaft. A pull-up exercise component is provided between the other side of the arm and the front cover of the differential, and the pull-down exercise component and the pull-up exercise component are both located in the differential housing; a retractable horizontal bar button is passed through the front cover of the differential, and the horizontal bar button can be extended into the arc groove and arranged under the force arm, and the horizontal bar button can be retracted to a position where it does not reach the arc groove; a differential housing bracket is fixedly provided at the bottom end of the differential housing, and the differential housing bracket is pin-connected to the horizontal-vertical conversion seat.

[0007] Preferably, the pull-down exercise component includes a pull-down spring, a pull-down force adjustment knob, a pull-down force adjustment column, a pull-down return spring, a pull-down cam, a pull-down force transmission plate and a pull-down button; the pull-down spring is sleeved on one end of the differential shaft, one end of the pull-down spring is passed through the inner end of the pull-down force adjustment knob, the other end of the pull-down spring is passed through the upper part of the other end of the pull-down cam, and the pull-down cam is rotatably arranged on the differential shaft; the pull-down force adjustment column is rotatably arranged between the differential front cover plate and the differential rear cover plate, and the pull-down force adjustment knob is passed through and threadedly connected on the pull-down force adjustment column; the upper end of the pull-down cam is pinned to There is a pull-down force transmission plate; the two ends of the pull-down return spring are respectively passed through the upper part of one end of the pull-down convex disc and the upper part of one end of the pull-down force transmission plate; the pull-down button is telescopically passed through the front cover plate of the differential, and the pull-down button is provided with a top block, which is composed of a cylindrical top block and a conical top block. When the pull-down button is in an extended state, the conical surface of the top block is tangent to the pull-down force transmission plate and the pull-down return spring is in a natural state. When the pull-down button is extended into the rear cover plate of the differential, the cylindrical surface of the top block is in tangential contact with the pull-down force transmission plate and the pull-down return spring is in a stretched state. At this time, the buckled end surface of the pull-down force transmission plate and the buckling end surface of the force arm rod are buckled with each other.

[0008] Preferably, the pull-up exercise component includes an upper tension spring, an upper tension adjustment knob, an upper tension adjustment column, an upper pull return spring, an upper pull convex plate, an upper pull force transmission plate and an upper push button; the upper tension spring is sleeved on the other end of the differential shaft, one end of the upper tension spring is passed through the inner end of the upper tension adjustment knob, the other end of the upper tension spring is passed through the upper part of the other end of the upper pull convex plate, and the upper pull convex plate is rotatably arranged on the differential shaft; the upper tension adjustment column is rotatably arranged between the differential front cover plate and the differential rear cover plate, and the upper tension adjustment knob is passed through and threadedly connected to the upper tension adjustment column; the lower end of the upper pull convex plate is pinned with an upper Pull the force transmission plate; the two ends of the pull-up return spring are respectively passed through the lower part of one end of the pull-up convex disc and the lower part of one end of the pull-up force transmission plate; the push-up button is telescopically passed through the front cover plate of the differential, and the push-up button is provided with a top block, which is a cylindrical top block and a conical top block. When the push-up button is in a naturally extended state, the conical surface of the top block is tangent to the pull-up force transmission plate and the pull-up return spring is in a natural state. When the push-up button is extended into the rear cover plate of the differential, the cylindrical surface of the top block is in tangential contact with the pull-up force transmission plate and the pull-up return spring is in a stretched state. At this time, the buckled end surface of the pull-up force transmission plate and the buckling end surface of the force arm rod are buckled with each other.

[0009] Preferably, the differential housing is provided with a lower pull groove for the lower tension adjustment knob to pass through and extend out; the differential housing is provided with an upper pull groove for the upper tension adjustment column to pass through and extend out.

[0010] Preferably, a button front bracket is fixedly provided on the inner end surface of the front cover plate of the differential corresponding to the insertion position of the pull-down button, the push-up button and the horizontal bar button; the outer circumferential surfaces of the pull-down button, the push-up button and the horizontal bar button close to the direction of the front cover plate of the differential are all provided with shaft end retaining rings, when the pull-down button, the push-up button and the horizontal bar button are in the extended state, all the shaft end retaining rings are limited and blocked on the front cover plate of the differential; a positioning spring is fixed in all the button front brackets, and a first accommodating groove and a second accommodating groove are opened on the outer circumferential surface of the pull-down button, the push-up button and the horizontal bar button close to the direction of the front cover plate of the differential, when the pull-down button, the push-up button and the horizontal bar button are in the extended state, all the positioning springs are stuck in the first accommodating groove, and when the pull-down button, the push-up button and the horizontal bar button are extended into the rear cover plate of the differential, the positioning spring is stuck in the second accommodating groove; the rear cover plate of the differential is fixed with a button rear bracket corresponding to the insertion position of the pull-down button, the push-up button and the horizontal bar button.

[0011] Preferably, a torsion spring gasket is provided between the rear cover plate of the differential and the pull-down convex plate; and a torsion spring gasket is provided between the front cover plate of the differential and the pull-up convex plate.

[0012] Compared with the existing technology, the beneficial effects of the present invention are: the present invention provides a rehabilitation equipment conversion and adjustment device, this exercise function conversion differential can be used for both vertical and horizontal exercises, the vertical direction can push the force arm to perform two rehabilitation exercises of pushing up and pulling down, at the same time, the vertical direction can hold the force arm to perform horizontal bar exercises, and the horizontal direction can adduct and abduct the force arm to perform two other rehabilitation exercises, five rehabilitation exercise functions and the functions can be easily switched to fully improve the rehabilitation exercise effect; this exercise function conversion differential can be used as fitness equipment, rehabilitation equipment, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0016] Figure 4 It is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0017] Figure 5 It is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0018] Figure 6 It is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0019] Figure 7It is a cross-sectional view of the initial state of the lever arm when the pull-down button is pressed;

[0020] Figure 8 It is a cross-sectional view of the force arm in the pulled-down state when the pull-down button of the present invention is pressed;

[0021] Figure 9 It is a schematic diagram of the overall structure of the force arm in the pulled-down state when the pull-down button is pressed;

[0022] Figure 10 It is a schematic diagram of the overall internal structure of the present invention when the force arm is in the pulled-down state when the pull-down button is pressed;

[0023] Figure 11 It is a cross-sectional view of the initial state of the force arm when the push-up button of the present invention is pressed;

[0024] Figure 12 This is a schematic diagram of the overall structure of the lever arm in the initial state when the push-up button is pressed;

[0025] Figure 13 It is a cross-sectional view of the force arm in the upward push state when the push-up button of the present invention is pressed;

[0026] Figure 14 It is a schematic diagram of the overall structure of the force arm in the upward push state when the push-up button is pressed.

[0027] In the figure: 1. Differential front cover; 2. Differential rear cover; 3. Differential shaft; 4. Differential housing; 5. Differential housing bracket; 6. Horizontal-vertical conversion seat; 7. Horizontal bar button; 8. Gear; 9. Down-tension spring; 10. Down-tension adjustment knob; 11. Down-tension adjustment column; 12. Down-pull return spring; 13. Down-pull cam; 14. Down-pull force transmission plate; 15. Down-pull button; 16. Force arm; 17. Up-tension spring; 18. Up-tension adjustment knob; 19. Up-tension adjustment column; 20. Up-pull return spring; 21. Up-pull cam; 22. Up-pull force transmission plate; 23. Up-push button; 24. Button front bracket; 25. Button rear bracket; 26. Shaft end retaining ring; 27. Positioning spring; 28. First accommodating groove; 29. ​​Second accommodating groove; 30. Torsion spring gasket. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] Example:

[0032] like Figure 1-14 As shown, a rehabilitation equipment conversion and adjustment device includes a differential front cover 1, a differential rear cover 2, a differential shaft 3, a gear 8, a differential housing 4, a differential housing bracket 5, a horizontal-vertical conversion seat 6, a pull-down exercise component, a pull-up exercise component, a horizontal bar button 7 and a lever arm 16.

[0033] The outer end surfaces of both sides of the differential housing 4 are respectively provided with a differential front cover plate 1 and a differential rear cover plate 2; the differential shaft 3 is rotatably arranged between the differential front cover plate 1 and the differential rear cover plate 2, the lever arm 16 is sleeved on the differential shaft 3, and an arc-shaped groove is provided on the differential housing 4 for the lever arm 16 to pass through and extend; a gear 8 is provided on the outer end surface of the differential shaft 3, and the gear 8 is in contact with the outer end surface of the differential rear cover plate 2; a pull-down exercise component is provided between one side of the lever arm 16 and the differential rear cover plate 2, and the other side of the lever arm 16 is in contact with the A pull-up exercise component is provided between the front cover plates 1 of the differential, and the pull-down exercise component and the pull-up exercise component are both located in the differential housing 4; a retractable horizontal bar button 7 is provided on the front cover plate 1 of the differential, and the horizontal bar button 7 can be extended into the arc groove and arranged under the force arm rod 16, and the horizontal bar button 7 can be retracted to a position where it does not reach the arc groove; a differential housing bracket 5 is fixed to the bottom end of the differential housing 4, and the differential housing bracket 5 is pin-connected to the horizontal-vertical conversion seat 6, and the horizontal-vertical conversion seat 6 is arranged on the integral converter support frame.

[0034] The pull-down exercise component includes a pull-down spring 9, a pull-down force adjustment knob 10, a pull-down force adjustment column 11, a pull-down return spring 12, a pull-down cam 13, a pull-down force transmission plate 14 and a pull-down button 15; the pull-down spring 9 is sleeved on one end of the differential shaft 3, one end of the pull-down spring 9 is passed through the inner end of the pull-down force adjustment knob 10, and the other end of the pull-down spring 9 is passed through the upper part of the other end of the pull-down cam 13, and the pull-down cam 13 is rotatably arranged on the differential shaft 3; the pull-down force adjustment column 11 is rotatably arranged between the differential front cover 1 and the differential rear cover 2, and the pull-down force transmission plate 14 is rotated. A downward tension adjusting knob 10 is provided on the tension adjusting column 11 and is threadedly connected; a downward pull force transmission plate 14 is pinned to the upper part of one end of the downward pull convex disc 13; both ends of the downward pull return spring 12 are respectively provided on the upper part of one end of the downward pull convex disc 13 and the upper part of one end of the downward pull force transmission plate 14; the downward pull button 15 is telescopically provided on the front cover plate 1 of the differential, and the downward pull button 15 is provided with a top block, which is composed of a cylindrical top block and a conical top block. When the downward pull button 15 is in an extended state, the conical surface of the top block is tangent to the downward pull force transmission plate 14 and the downward pull return spring 12 is in a natural state.

[0035] The pull-up exercise assembly includes an upper tension spring 17, an upper tension adjustment knob 18, an upper tension adjustment column 19, an upper pull return spring 20, an upper pull convex plate 21, an upper pull force transmission plate 22 and an upper push button 23; the upper tension spring 17 is sleeved on the other end of the differential shaft 3, one end of the upper tension spring 17 is passed through the inner end of the upper tension adjustment knob 18, and the other end of the upper tension spring 17 is passed through the upper part of the other end of the upper pull convex plate 21, and the upper pull convex plate 21 is rotatably arranged on the differential shaft 3; the upper tension adjustment column 19 is rotatably arranged between the differential front cover plate 1 and the differential rear cover plate 2, An upper tension adjusting knob 18 is provided on and threadedly connected to the upper tension adjusting column 19; an upper tension transmission plate 22 is pinned to the lower part of one end of the upper pull boss 21; both ends of the upper pull return spring 20 are respectively provided on the lower part of one end of the upper pull boss 21 and the lower part of one end of the upper pull transmission plate 22; the push-up button 23 is telescopically provided on the front cover plate 1 of the differential, and the push-up button 23 is provided with a top block, which is composed of a cylindrical top block and a conical top block. When the push-up button 23 is in a naturally extended state, the conical surface of the top block is tangent to the upper pull transmission plate 22 and the pull-up return spring 20 is in a natural state.

[0036] The initial value of the downward pulling force can be adjusted by rotating the downward pulling force adjusting knob 10; the initial value of the upward pushing force can be adjusted by rotating the upward pulling force adjusting knob 18.

[0037] The differential housing 4 is provided with a lower pull groove for the lower tension adjustment knob 10 to pass through and extend out; the differential housing 4 is provided with an upper pull groove for the upper tension adjustment column 19 to pass through and extend out.

[0038] A button front bracket 24 is fixed on the inner end surface of the differential front cover 1 corresponding to the insertion position of the pull-down button 15, the push-up button 23 and the horizontal bar button 7; the pull-down button 15, the push-up button 23 and the horizontal bar button 7 are all provided with shaft end retaining rings 26 on the outer circumferential surface close to the differential front cover 1. When the pull-down button 15, the push-up button 23 and the horizontal bar button 7 are in the extended state, all the shaft end retaining rings 26 are limited on the differential front cover 1; all the button front brackets 24 are fixed with positioning springs 27, and the pull-down button 15, the push-up button 23 and the horizontal bar button 7 are fixed with positioning springs 27. A first accommodating groove 28 and a second accommodating groove 29 are provided on the outer circumferential surface of the lever button 7 close to the front cover plate 1 of the differential. When the pull-down button 15, the push-up button 23 and the horizontal bar button 7 are in the extended state, all the positioning springs 27 are stuck in the first accommodating groove 28. When the pull-down button 15, the push-up button 23 and the horizontal bar button 7 are extended into the rear cover plate 2 of the differential, the positioning spring 27 is stuck in the second accommodating groove 29; the rear cover plate 2 of the differential is fixed with a button rear bracket 25 corresponding to the insertion position of the pull-down button 15, the push-up button 23 and the horizontal bar button 7.

[0039] A torsion spring washer 30 is provided between the rear cover plate 2 of the differential and the pull-down convex plate 13 ; a torsion spring washer 30 is provided between the front cover plate 1 of the differential and the pull-up convex plate 21 .

[0040] The working principle of the present invention is:

[0041] The horizontal-vertical conversion seat 6 is arranged on the integral converter support frame, and the integral converter support frame is placed on the ground to realize the installation of the multifunctional exercise mode converter;

[0042] like Figure 7 As shown, when the pull-down button 15 is pressed, the pull-down button 15 extends into the rear cover of the differential. At this time, the positioning spring 27 is stuck in the second accommodating groove 29, and the cylindrical surface of the top block of the pull-down button 15 is in tangential contact with the pull-down force transmission plate 14 and the pull-down return spring 12 is in a stretched state. At this time, the buckled end surface of the pull-down force transmission plate 14 and the buckled end surface of the force arm rod 16 are buckled with each other, and the push-up button 23 and the horizontal bar button 7 are pulled out. When the shaft end retaining ring 26 of the push-up button 23 and the horizontal bar button 7 is blocked and limited, the pulling out stops. At this time, the horizontal bar button 7 is not below the force arm rod 16, and the conical surface of the top block of the push-up button 23 is tangential to the pull-up force transmission plate 22 and the pull-up return spring 20 is in a natural state, so that the force arm rod 16 will not contact the pull-up force transmission plate 22 when it rotates; when the power arm 16 is turned downward, as shown Figure 8-10As shown, since the force arm 16 and the pull-down force transmission plate 14 are buckled with each other, the force arm 16 will lead the pull-down force transmission plate 14 to rotate counterclockwise, and the pull-down force transmission plate 14 will drive the pull-down cam 13 to rotate. During the counterclockwise rotation of the pull-down force transmission plate 14 and the pull-down cam 13, the connecting end of the lower tension spring 9 and the pull-down cam 13 is deformed as the pull-down cam 13 rotates, and the pull-down return spring 12 maintains the previous stretched state, and the connecting end of the lower tension spring 9 and the lower tension adjustment knob 10 is fixed, and the lower tension adjustment column 11 and the lower tension adjustment knob 10 do not rotate or move, thereby completing the pull-down exercise process. When the force arm 16 is pulled down and rotated to reach the lowest point, the lower tension spring 9 stores energy due to deformation, and the return force assists in returning during the return stroke, thereby achieving upward unidirectional rehabilitation exercise;

[0043] like Figure 11-12 As shown, when the push-up button 23 is pressed, the push-up button 23 extends into the rear cover of the differential. At this time, the positioning spring 27 is stuck in the second accommodating groove 29, and the cylindrical surface of the top block of the push-up button 23 is in tangential contact with the upper pull-up force transmission plate 22 and the upper pull-up return spring 20 is in a stretched state. At this time, the buckled end surface of the upper pull-up force transmission plate 22 is buckled with the buckled end surface of the force arm rod 16, and the pull-down button 15 and the horizontal bar button 7 are pulled out. When the shaft end retaining ring 26 of the pull-down button 15 and the horizontal bar button 7 is blocked and limited, the pulling out stops. At this time, the horizontal bar button 7 is not below the force arm rod 16, and the conical surface of the top block of the pull-down button 15 is tangential to the pull-down force transmission plate 14 and the pull-down return spring 12 is in a natural state, so that the force arm rod 16 will not contact the pull-down force transmission plate 14 when it rotates; when the power arm 16 is turned upward, as shown Figure 13-14 As shown, since the force arm 16 and the upper pull force transmission plate 22 are buckled with each other, the force arm 16 will lead the upper pull force transmission plate 22 to rotate clockwise, and the upper pull force transmission plate 22 will drive the upper pull flange 21 to rotate. During the clockwise rotation of the upper pull force transmission plate 22 and the upper pull flange 21, the connecting end of the upper tension spring 17 and the upper pull flange 21 is deformed as the upper pull flange 21 rotates, while the upper pull return spring 20 maintains the previous stretched state, the connecting end of the upper tension spring 17 and the upper tension adjustment knob 18 is fixed, and the upper tension adjustment column 19 and the upper tension adjustment knob 18 do not rotate or move; when the force arm 16 is pushed up and rotated to reach the highest point, the upper tension spring 17 is deformed and stores energy, and the return force is used to assist in returning during the return stroke, thereby realizing upward unidirectional rehabilitation exercise;

[0044] like Figure 1-6 As shown, the horizontal bar button 7 extends into the arc groove and is placed under the force arm 16. At this time, the upper and lower parts of the force arm 16 are respectively limited by the arc groove and the horizontal bar button 7, so that people who need to exercise can hold the force arm 16 to perform horizontal bar exercises;

[0045] Since the differential housing bracket 5 and the horizontal-vertical conversion seat 6 are pin-connected to each other, the differential housing bracket 5 can also be rotated 90 degrees on the horizontal-vertical conversion seat 6. At this time, the entire multifunctional exercise mode converter except the horizontal-vertical conversion seat 6 can be rotated 90 degrees. At this time, the inward force arm 16 corresponds to the downward force arm 16, and the outward force arm 16 corresponds to the upward force arm 16. Therefore, the multifunctional exercise mode converter can also perform rehabilitation exercises of inward and outward movement in the horizontal direction.

[0046] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A rehabilitation equipment conversion and adjustment device, characterized in that: The invention comprises a differential front cover plate (1), a differential rear cover plate (2), a differential shaft (3), a gear (8), a differential housing (4), a differential housing bracket (5), a horizontal-vertical conversion seat (6), a pull-down exercise component, a pull-up exercise component, a horizontal bar button (7) and a force arm rod (16); The outer end surfaces of both sides of the differential housing (4) are respectively provided with a differential front cover plate (1) and a differential rear cover plate (2); the differential shaft (3) is rotatably arranged between the differential front cover plate (1) and the differential rear cover plate (2); the force arm (16) is sleeved on the differential shaft (3); an arc-shaped groove is provided on the differential housing (4) for the force arm (16) to pass through and extend; a gear (8) is provided on the outer end surface of the differential shaft (3), and the gear (8) is in contact with the outer end surface of the differential rear cover plate (2); a pull-down forging is provided between one side of the force arm (16) and the differential rear cover plate (2). A chain assembly is provided between the other side of the lever arm (16) and the differential front cover (1), and the pull-down exercise assembly and the pull-up exercise assembly are both located in the differential housing (4); a retractable horizontal bar button (7) is provided on the differential front cover (1), and the horizontal bar button (7) can be extended into the arc groove and arranged under the lever arm (16), and the horizontal bar button (7) can be retracted to a position not reaching the arc groove; a differential housing bracket (5) is fixedly provided at the bottom end of the differential housing (4), and the differential housing bracket (5) is pin-connected to the horizontal-vertical conversion seat (6).

2. The rehabilitation equipment conversion and adjustment device according to claim 1, characterized in that: The pull-down exercise component comprises a pull-down spring (9), a pull-down force adjustment knob (10), a pull-down force adjustment column (11), a pull-down return spring (12), a pull-down cam (13), a pull-down force transmission plate (14) and a pull-down button (15); the pull-down spring (9) is sleeved on one end of the differential shaft (3), one end of the pull-down spring (9) is passed through the inner end of the pull-down force adjustment knob (10), the other end of the pull-down spring (9) is passed through the upper part of the other end of the pull-down cam (13), and the pull-down cam (13) is rotatably arranged on the differential shaft (3); the pull-down force adjustment column (11) is rotatably arranged between the differential front cover plate (1) and the differential rear cover plate (2), and the pull-down force adjustment knob (10) is passed through and threadedly connected on the pull-down force adjustment column (11); one end of the pull-down cam (13) is passed through the inner end of the pull-down force adjustment knob (10), and the other end of the pull-down spring (9) is passed through the upper part of the other end of the pull-down cam (13), and the pull-down cam (13) is rotatably arranged on the differential shaft (3); The upper end is pinned with a pull-down force transmission plate (14); the two ends of the pull-down return spring (12) are respectively arranged on the upper end of one end of the pull-down convex disc (13) and the upper end of one end of the pull-down force transmission plate (14); the pull-down button (15) is telescopically arranged on the front cover plate (1) of the differential; the pull-down button (15) is provided with a top block, which is a cylindrical top block and a conical top block. When the pull-down button (15) is in an extended state, the conical surface of the top block is tangent to the pull-down force transmission plate (14) and the pull-down return spring (12) is in a natural state; when the pull-down button (15) is extended into the rear cover plate (2) of the differential, the cylindrical surface of the top block is in tangent contact with the pull-down force transmission plate (14) and the pull-down return spring (12) is in a stretched state, and at this time, the buckled end surface of the pull-down force transmission plate (14) and the buckling end surface of the force arm (16) are buckled with each other.

3. The rehabilitation equipment conversion and adjustment device according to claim 1 or 2, characterized in that: The pull-up exercise assembly comprises an upper tension spring (17), an upper tension adjustment knob (18), an upper tension adjustment column (19), an upper pull return spring (20), an upper pull convex disc (21), an upper pull force transmission plate (22) and an upper push button (23); the upper tension spring (17) is sleeved on the other end of the differential shaft (3), one end of the upper tension spring (17) is passed through the inner end of the upper tension adjustment knob (18), the other end of the upper tension spring (17) is passed through the upper part of the other end of the upper pull convex disc (21), and the upper pull convex disc (21) is rotatably arranged on the differential shaft (3); the upper tension adjustment column (19) is rotatably arranged between the differential front cover plate (1) and the differential rear cover plate (2), and the upper tension adjustment knob (18) is passed through and threadedly connected to the upper tension adjustment column (19); one end of the upper pull convex disc (21) is passed through and threadedly connected to the differential shaft (3); The lower end is pinned with an upper pull force transmission plate (22); the two ends of the upper pull return spring (20) are respectively arranged on the lower end of one end of the upper pull convex disc (21) and the lower end of one end of the upper pull force transmission plate (22); the push button (23) is telescopically arranged on the front cover plate (1) of the differential, and the push button (23) is provided with a top block, which is a cylindrical top block and a conical top block. The push button (23) is in a naturally extended state. When in the push-up state, the conical surface of the top block is tangent to the upper pull-up force transmission plate (22) and the upper pull-up return spring (20) is in a natural state. When the push-up button (23) is extended into the rear cover plate (2) of the differential, the cylindrical surface of the top block is in tangential contact with the upper pull-up force transmission plate (22) and the upper pull-up return spring (20) is in a stretched state. At this time, the buckled end surface of the upper pull-up force transmission plate (22) and the buckled end surface of the force arm rod (16) are buckled with each other.

4. The rehabilitation equipment conversion and adjustment device according to claim 3, characterized in that: The differential housing (4) is provided with a lower pull groove for the lower pull force adjustment knob (10) to pass through and extend out; the differential housing (4) is provided with an upper pull groove for the upper pull force adjustment column (19) to pass through and extend out.

5. The rehabilitation equipment conversion and adjustment device according to claim 3, characterized in that: The inner end surface of the differential front cover (1) is fixedly provided with a button front bracket (24) corresponding to the penetration position of the pull-down button (15), the push-up button (23) and the horizontal bar button (7); the outer circumferential surfaces of the pull-down button (15), the push-up button (23) and the horizontal bar button (7) close to the differential front cover (1) are all provided with shaft end retaining rings (26); when the pull-down button (15), the push-up button (23) and the horizontal bar button (7) are in the extended state, all the shaft end retaining rings (26) are limited on the differential front cover (1); positioning springs (27) are fixedly provided in all button front brackets (24); the pull-down button (15), the push-up button (23) and the horizontal bar button (7) are fixedly provided with positioning springs (27) A first accommodating groove (28) and a second accommodating groove (29) are provided on the outer circumferential surface of the button (7) in the direction of the differential front cover (1); when the pull-down button (15), the push-up button (23) and the horizontal bar button (7) are in an extended state, all the positioning springs (27) are stuck in the first accommodating groove (28); when the pull-down button (15), the push-up button (23) and the horizontal bar button (7) are extended into the differential rear cover (2), the positioning springs (27) are stuck in the second accommodating groove (29); and a button rear bracket (25) is fixedly provided on the differential rear cover (2) corresponding to the penetration position of the pull-down button (15), the push-up button (23) and the horizontal bar button (7).

6. The rehabilitation equipment conversion and adjustment device according to claim 1, characterized in that: A torsion spring washer (30) is provided between the differential rear cover plate (2) and the pull-down convex disc (13); and a torsion spring washer (30) is provided between the differential front cover plate (1) and the pull-up convex disc (21).

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