Leg fixing mechanism and lower limb exerciser

Abstract

The utility model provides a leg fixing mechanism and a lower limb exerciser, the leg fixing mechanism comprises a support and a supporting plate, the support is used for being arranged on a leg rod, and the supporting plate is arranged on the support; the supporting plate is located in front of the leg rod and used for supporting legs; a leg fixing mechanism is optimized, and bandage fixing is omitted; the leg fixing device is simple in structure, convenient to wear and capable of meeting the requirements of different users for fixing legs on leg rods, the freedom degree of leg movement is increased, leg joints cannot be damaged, the pressure of the legs in the walking process is small, and the problems that in the prior art, fixing is not firm, leg postures are inaccurate, and blood flow of the legs is prone to being affected when binding bands are adopted for fixing are solved. And even the risk of skin abrasion is generated.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a leg fixing mechanism and a lower limb exerciser. Background Art

[0002] In my country, the number of users suffering from limb dysfunction or disability due to accidents, diseases, body aging and other factors increases every year, and these users bring huge burdens to their families and society. Clinical practice has proved that by conducting scientific rehabilitation training on the lower limbs on rehabilitation equipment, stimulating the user's motor nerves and muscles, and allowing the user to perform sufficient repetitive activities, it is possible to compensate for and restore the lost functions of the limbs and improve the user's ability to take care of themselves. When using lower limb rehabilitation equipment, the user's legs need to be fixed on the leg rods of the rehabilitation equipment, and then the legs can move with the leg rods.

[0003] In the prior art, the methods of fixing the legs on the leg rods include pure strap fixation and multi-component combination fixation; when using pure strap fixation, since the straps are made of soft materials, the mobility of the bound parts is relatively high, resulting in loose fixation and inaccurate leg posture; multi-component combination fixation is a combination of a support plate, a cushion, and a strap fixation, but the support plate is made of hard materials and is fixed in position, which cannot meet the needs of different users and is prone to cause joint damage; in addition, when using strap fixation, it is inconvenient to wear, and the legs will be strangled by the straps during walking, which will affect the blood flow of the legs for a long time and even create the risk of skin abrasion. Summary of the invention

[0004] In view of this, the utility model provides a leg fixing mechanism and a lower limb exerciser to solve the problems in the prior art of loose fixation with straps, inaccurate leg posture, easy impact on blood flow in the legs, and even the risk of skin abrasion.

[0005] The utility model provides a leg fixing mechanism for a lower limb exerciser, wherein the lower limb exerciser comprises a leg rod; the leg fixing mechanism comprises:

[0006] A bracket, which is used to be arranged on the leg rod;

[0007] A support plate is arranged on the bracket; the support plate is located in front of the leg rod, and the support plate is used to support the leg.

[0008] Further optionally, the support plate is designed such that: when the leg supported on the support plate moves along with the leg rod, the posture of the support plate can be adaptively adjusted along with the movement state of the leg;

[0009] Further optionally, the posture of the pallet includes the up-down position and / or the left-right position and / or the front-back position and / or the tilt angle of the pallet;

[0010] Wherein, the inclination angle of the support plate is the angle between the main board surface of the support plate and the vertical plane.

[0011] Further optionally, the support plate is movably arranged on the bracket; the movement of the support plate relative to the bracket includes at least one of left and right movement, up and down movement, front and back movement and rotation.

[0012] Further optionally, the bracket includes a frame body and a shaft, one end of the frame body is used to be arranged on the leg rod, and the other end of the frame body is provided with the shaft;

[0013] The front plate surface of the support plate is arranged on the shaft through a first connecting component, and the support plate can slide along the extension direction of the shaft and / or can rotate around the shaft.

[0014] Further optionally, when the frame body is arranged on the leg rod, the shaft extends in the horizontal direction, and the shaft is located in front of the leg rod;

[0015] The support plate slides left and right along the axis to adjust the horizontal distance between the leg and the leg rod; the support plate rotates around the axis to adjust the angle between the leg and the leg rod.

[0016] Further optionally, the first connecting component includes a base plate and a sleeve; the base plate is arranged on the front plate surface of the support plate, the outer side wall of the sleeve is arranged on the base plate, and the through hole of the sleeve is sleeved on the shaft; the sleeve can slide along the extension direction of the shaft and / or can rotate around the shaft.

[0017] Further optionally, the first connecting component includes a connecting seat; the connecting seat includes a main board and a side panel, the main board is arranged on the front panel surface of the support plate, and the side panel is connected to the main board; an axial hole is formed at one end of the side panel away from the main board, and the shaft is passed through the axial hole; the side panel can slide along the extension direction of the shaft and / or can rotate around the shaft.

[0018] Further optionally, one end of the bracket is used to be arranged on the leg rod, and the other end of the bracket is formed with a slide groove;

[0019] The front plate surface of the support plate and the slide groove are connected via a second connecting assembly, and the support plate can slide along the extension direction of the slide groove and / or can rotate relative to the slide groove.

[0020] Further optionally, the bracket is a bent plate-shaped structure and comprises a first bracket segment and a second bracket segment; the first bracket segment is arranged on the leg rod, the second bracket segment is connected to the first bracket segment and the second bracket segment is used to be arranged in front of the leg rod; the second bracket segment is formed with the slide groove, and the slide groove extends in the horizontal direction;

[0021] The support plate slides left and right along the slide slot to adjust the horizontal distance between the leg and the leg rod; the support plate rotates relative to the slide slot to adjust the angle between the leg and the leg rod.

[0022] Further optionally, the second connecting assembly includes an elastic member, the elastic member includes an A connecting end and a B connecting end, the A connecting end is arranged on the front plate surface of the support plate, and the B connecting end is arranged in the slide groove through a slide rod;

[0023] The slide bar can slide left and right along the slide slot and can rotate relative to the slide slot.

[0024] Further optionally, there are two A connection ends; the two A connection ends are respectively located at the two ends of the elastic member and the two A connection ends are both arranged on the front plate surface of the support plate; and the B connection end is located between the two A connection ends.

[0025] Further optionally, the leg fixing mechanism further comprises a pad, the pad is arranged on the rear plate surface of the support plate, and the pad is used to support the legs;

[0026] Wherein, the bracket and the supporting plate are both made of hard materials, and the protective pad is made of soft materials.

[0027] The utility model also provides a lower limb exerciser, comprising a leg rod and any one of the above-mentioned leg fixing mechanisms; the leg rod comprises a thigh rod and a shank rod, the thigh rod and the shank rod are hingedly connected; the thigh rod is detachably provided with a leg fixing mechanism, and the position of the leg fixing mechanism on the thigh rod is adjustable; and / or

[0028] The leg fixing mechanism is detachably provided on the calf rod, and the position of the leg fixing mechanism on the calf rod is adjustable.

[0029] Compared with the prior art, the beneficial effects of the utility model are mainly:

[0030] The leg fixing mechanism is optimized and the strap fixation is eliminated; the bracket is designed to be set on the leg rod, and the support plate is set on the bracket and located in front of the leg rod, and the support plate can support the legs; it is easy to wear and can meet the needs of different users to fix the legs on the leg rod, increase the freedom of leg movement, and realize a variety of training modes; the leg joints and the leg rod joints can be aligned by adjustment, will not damage the leg joints, and the pressure on the legs during walking is small, which solves the problems of unstable fixation, inaccurate leg posture, easy to affect the blood flow of the legs, and even the risk of skin abrasion when using straps in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] Figure 1 This is a structural schematic diagram of Embodiment 1 of the leg fixing mechanism provided by the utility model;

[0034] Figure 2a , Figure 2b and Figure 2c A schematic diagram of the assembly structure of the leg fixing mechanism and the leg rod embodiment 1 provided by the utility model;

[0035] Figure 3 This is a structural schematic diagram of Embodiment 2 of the leg fixing mechanism provided by the utility model;

[0036] Figure 4a , Figure 4b and Figure 4c A schematic diagram of the assembly structure of a leg fixing mechanism and a leg rod embodiment 2 provided by the utility model;

[0037] Figure 5 This is a structural schematic diagram of Embodiment 3 of the leg fixing mechanism provided by the utility model;

[0038] Figure 6a , Figure 6b and Figure 6c A schematic diagram of the assembly structure of a leg fixing mechanism and a leg rod embodiment 3 provided by the utility model;

[0039] In the figure:

[0040] 11-frame body; 12-axis; 13-first bracket section; 14-second bracket section; 141-slideway;

[0041] 21- support plate; 211- front plate surface; 22- pad;

[0042] 31-bottom plate; 32-sleeve; 33-connecting seat; 331-main board; 332-side board;

[0043] 41-elastic member; 411-A connecting end; 412-B connecting end;

[0044] 51-thigh bar; 52-calf bar; 53-pedal. DETAILED DESCRIPTION

[0045] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0047] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0049] In the prior art, the methods of fixing the legs on the leg rods include pure strap fixation and multi-component combination fixation; in the case of pure strap fixation, since the straps are made of soft materials, the bound parts have a relatively high range of motion, resulting in loose fixation and inaccurate leg posture; multi-component combination fixation is a combination of a support plate, a cushion, and a strap fixation, but the support plate is made of hard materials and is fixed in position, which cannot meet the needs of different users and is prone to joint damage; in addition, when fixed with straps, it is inconvenient to wear, and the legs will be strangled by the straps during walking, which will affect the blood flow of the legs for a long time and even cause the risk of skin abrasion;

[0050] The utility model creatively provides a leg fixing mechanism for a lower limb exerciser, the lower limb exerciser comprises a leg rod; the leg fixing mechanism comprises a bracket and a support plate, the bracket is used to be arranged on the leg rod, and the support plate is arranged on the bracket; the support plate is located in front of the leg rod, and is used to support the leg;

[0051] The leg fixing mechanism has been optimized and the strap fixation has been eliminated; it is easy to wear and can meet the needs of different users to fix their legs on the leg rods, increasing the freedom of leg movement without damaging the leg joints and reducing the pressure on the legs during walking.

[0052] Example 1

[0053] like Figure 1 As shown, this embodiment provides a leg fixing mechanism for a lower limb exerciser, the lower limb exerciser includes a leg rod; the leg fixing mechanism includes:

[0054] A bracket, which is used to be arranged on the leg rod;

[0055] A support plate 21 is disposed on the bracket; the support plate 21 is located in front of the leg rod, and the support plate 21 is used to support the leg; specifically, a front plate surface 211 of the support plate 21 is disposed on the bracket, and a rear plate surface of the support plate 21 faces the leg rod;

[0056] A protective pad 22, which is arranged on the rear surface of the support plate 21, and the protective pad 22 is used to support the legs;

[0057] Among them, the bracket and the support plate 21 are both made of hard materials to provide hard support for the legs; the pad 22 is made of soft material to provide soft support for the legs; specifically, the bracket is made of steel, aluminum alloy or hard plastic, the support plate 21 is made of metal sheet or plastic plate, and the pad 22 is made of rubber or sponge; the pad 22 is fixed to the rear plate surface of the support plate 21 by Velcro or stitching to increase the comfort of the legs; it is easy to wear, and the legs naturally press against the pad 22 without additional operation.

[0058] In view of the problem that the legs have little freedom of movement when supported on the support plate 21, the present embodiment proposes that the support plate 21 is designed such that when the legs supported on the support plate 21 move with the leg rods, the posture of the support plate 21 can be adaptively adjusted according to the movement state of the legs;

[0059] Preferably, the posture of the support plate 21 includes the up-down position and / or the left-right position and / or the front-back position and / or the tilt angle of the support plate 21;

[0060] The inclination angle of the support plate 21 is the angle between the main board surface of the support plate 21 and the vertical plane.

[0061] Further, the support plate 21 is movably arranged on the bracket; the movement of the support plate 21 relative to the bracket includes at least one of left-right movement, up-down movement, forward-backward movement and rotation; in this embodiment, the support plate 21 can move left-right and rotate relative to the bracket;

[0062] When the legs are supported on the support plate 21, the support plate 21 can move relative to the bracket, which increases the freedom of leg movement and realizes various training modes. There are no straps for fixation, and the leg joints and leg rod joints can be aligned by adjustment without damaging the leg joints. During walking, the legs have a large range of motion and low pressure, which will not affect the blood flow of the legs and will not wear the skin of the legs.

[0063] In view of the problem that the structure of the bracket is complex and the connection between the support plate 21 and the bracket is unreliable, the present embodiment proposes that the bracket includes a bracket body 11 and an axis 12, one end of the bracket body 11 is used to be detachably arranged on the leg rod, and the other end of the bracket body 11 is provided with the axis 12; specifically, the axis 12 is an optical axis 12;

[0064] The front plate surface 211 of the support plate 21 is arranged on the shaft 12 through a first connecting assembly, and the support plate 21 can slide along the extension direction of the shaft 12 and / or can rotate around the shaft 12;

[0065] Specifically, when the frame body 11 is arranged on the leg rod, the shaft 12 is located in front of the leg rod, and the shaft 12 extends in the horizontal direction; the front side of the leg abuts against the cushion, and the pressure is dispersed during walking, and the skin is not compressed, thereby avoiding the risk of obstruction of blood flow in the thigh and abrasion of the leg skin;

[0066] According to actual needs, the relative position between the support plate 21 and the bracket can be adjusted, and then the relative position between the leg and the leg rod can be adjusted, so that the leg joint and the leg rod joint are aligned, avoiding the problem of leg joint damage caused by misalignment of the leg joint and the leg rod joint, and can adapt to different leg shapes; at the same time, the degree of freedom of the leg is improved, so that the leg can move accurately with the leg rod to achieve the corresponding posture, thereby improving the training efficiency;

[0067] The support plate 21 slides left and right along the shaft 12 to adjust the horizontal distance between the leg and the leg rod; the support plate 21 rotates around the shaft 12 to adjust the angle between the leg and the leg rod.

[0068] In order to solve the problem that the support plate 21 cannot move smoothly relative to the shaft 12 due to the complex structure of the first connecting component, the present embodiment proposes that the first connecting component includes a base plate 31 and a sleeve 32; the base plate 31 is arranged on the front plate surface 211 of the support plate 21, the outer wall of the sleeve 32 is arranged on the base plate 31, and the through hole of the sleeve 32 is sleeved on the shaft 12; the sleeve 32 can slide along the extension direction of the shaft 12 and can rotate around the shaft 12.

[0069] like Figure 2a , Figure 2b and Figure 2c As shown, this embodiment also provides a lower limb exerciser, comprising a leg rod, a pedal 53 and any one of the above-mentioned leg fixing mechanisms; the leg rod comprises a thigh rod 51 and a shank rod 52, one end of the thigh rod 51 is hingedly connected to one end of the shank rod 52, and the other end of the shank rod 52 is provided with a pedal 53, and the pedal 53 is used to support the foot; a leg fixing mechanism is detachably provided on the thigh rod 51, and the position of the leg fixing mechanism on the thigh rod 51 is adjustable;

[0070] A leg fixing mechanism is detachably provided on the calf rod 52, and the position of the leg fixing mechanism on the calf rod 52 is adjustable.

[0071] In summary, the utility model optimizes the fixing structure of the legs so that the legs are reliably arranged on the leg rods and can move with the leg rods, and at the same time increases the freedom of the support plate 21, so that the fixing structure can be applied to the legs of different users, thereby expanding the applicable scope of the fixing structure; the bracket and the support plate 21 provide hard support for the legs, and the pad 22 provides soft support for the legs; the support plate 21 can move left and right and rotate relative to the bracket, which can meet the needs of different users to fix their legs on the leg rods, increases the freedom of leg movement, and realizes a variety of training modes; there is no strap fixation, The leg joints and leg bar joints can be aligned by adjustment without damaging the leg joints, and the pressure on the legs during walking is small; it is easy to wear, and the legs naturally press against the pads 22 during standing without additional operation, avoiding the need to wrap the straps around the legs and leg bars when fixing with straps, which results in a long time for wearing; it solves the problems in the prior art of unstable fixation, inaccurate leg posture, and easy impact on leg blood flow when fixing with straps, and the problem of the position of the support plate 21 being unable to meet the needs of different users and easy to cause joint damage when fixing with a combination of multiple parts.

[0072] Example 2

[0073] like Figure 3As shown, different from the embodiment 1, the first connecting assembly includes a connecting seat 33; the connecting seat 33 includes a main board 331 and a side board 332, the main board 331 is arranged on the front board surface 211 of the support plate 21, and the side board 332 is connected to the main board 331; the side board 332 is formed with a shaft 12 hole at one end away from the main board 331, and the shaft 12 is penetrated in the shaft 12 hole; the side board 332 can slide along the extension direction of the shaft 12 and can rotate around the shaft 12;

[0074] Specifically, the connecting seat 33 is an integrally formed part; two side panels 332 are provided, and the two side panels 332 are arranged opposite to each other along the extension direction of the shaft 12, and the two side panels 332 are connected to the main board 331; the support plate 21 and the shaft 12 are stably and reliably connected, so that the support plate 21 can move smoothly relative to the shaft 12, thereby improving the freedom of movement of the support plate 21 and the legs.

[0075] like Figure 4a , Figure 4b and Figure 4c As shown, this embodiment also provides a lower limb exerciser, comprising a leg rod, a pedal 53 and any one of the above-mentioned leg fixing mechanisms; the leg rod comprises a thigh rod 51 and a shank rod 52, one end of the thigh rod 51 is hingedly connected to one end of the shank rod 52, and the other end of the shank rod 52 is provided with a pedal 53, and the pedal 53 is used to support the foot; a leg fixing mechanism is detachably provided on the thigh rod 51, and the position of the leg fixing mechanism on the thigh rod 51 is adjustable;

[0076] A leg fixing mechanism is detachably provided on the calf rod 52, and the position of the leg fixing mechanism on the calf rod 52 is adjustable.

[0077] Example 3

[0078] like Figure 5 As shown, different from Example 1, one end of the bracket is used to be set on the leg rod, and the other end of the bracket is formed with a slide groove 141; the front panel 211 of the support plate 21 and the slide groove 141 are connected by a second connecting component, and the support plate 21 can slide along the extension direction of the slide groove 141 and / or can rotate relative to the slide groove 141; that is, the support plate 21 can move left and right and rotate relative to the bracket.

[0079] In view of the problem that the relative position of the legs and the leg rods can be adjusted within a small range due to the unreasonable structural design of the bracket, the present embodiment proposes that the bracket is a bent plate-shaped structure; the bracket includes a first bracket segment 13 and a second bracket segment 14; the first bracket segment 13 is fixedly or detachably arranged on the leg rod, the second bracket segment 14 is connected to the first bracket segment 13 and the second bracket segment 14 is used to be arranged in front of the leg rod; the second bracket segment 14 is formed with a slide groove 141, and the slide groove 141 extends in the horizontal direction;

[0080] According to actual needs, the relative position between the support plate 21 and the bracket can be adjusted, and then the relative position between the leg and the leg rod can be adjusted, so that the leg joint and the leg rod joint are aligned, avoiding the problem of leg joint damage caused by misalignment of the leg joint and the leg rod joint, and can adapt to different leg shapes; at the same time, the degree of freedom of the leg is improved, so that the leg can move accurately with the leg rod to achieve the corresponding posture, thereby improving the training efficiency;

[0081] The support plate 21 slides left and right along the slide groove 141 to adjust the horizontal distance between the leg and the leg rod; the support plate 21 rotates relative to the slide groove 141 to adjust the angle between the leg and the leg rod.

[0082] In view of the problem that the second connecting component has a complex structure and thus the support plate 21 cannot move smoothly relative to the bracket, the present embodiment proposes that the second connecting component includes an elastic member 41, the elastic member 41 includes an A connecting end 411 and a B connecting end 412, the A connecting end 411 is arranged on one side of the support plate 21, and the B connecting end 412 is arranged in the slide groove 141 through a slide rod; the elastic member 41 enables the support plate 21 to move forward and backward relative to the bracket;

[0083] The slide bar can slide left and right along the slide slot 141 and can rotate relative to the slide slot 141 .

[0084] Furthermore, the elastic member 41 is in an arched structure or a plate-shaped structure, and two A connection ends 411 are provided; the two A connection ends 411 are respectively located at the two ends of the elastic member 41 and the two A connection ends 411 are both arranged on the front plate surface 211 of the support plate 21; the B connection end 412 is located between the two A connection ends 411; the elastic member 41 is arranged along the vertical direction;

[0085] Specifically, the elastic member 41 is a spring sheet or a spring or a rubber plastic plate, which provides hard support for the legs.

[0086] like Figure 6a , Figure 6b and Figure 6c As shown, this embodiment also provides a lower limb exerciser, comprising a leg rod, a pedal 53 and any one of the above-mentioned leg fixing mechanisms; the leg rod comprises a thigh rod 51 and a shank rod 52, one end of the thigh rod 51 is hingedly connected to one end of the shank rod 52, and the other end of the shank rod 52 is provided with a pedal 53, and the pedal 53 is used to support the foot; a leg fixing mechanism is detachably provided on the thigh rod 51, and the position of the leg fixing mechanism on the thigh rod 51 is adjustable;

[0087] A leg fixing mechanism is detachably provided on the calf rod 52, and the position of the leg fixing mechanism on the calf rod 52 is adjustable.

[0088] Example 4

[0089] Based on Example 1 or Example 2 or Example 3, the leg fixing mechanism also includes a strap; the strap is used to tie the legs to the leg rod, and the strap is made of soft material; specifically, the strap is made of cloth or leather or chemical fiber; the legs are reliably set on the leg rod, improving the accuracy of leg movement.

[0090] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A leg fixing mechanism for a lower limb exerciser, wherein the lower limb exerciser comprises a leg rod; characterized in that: The leg fixing mechanism comprises: A bracket, which is used to be arranged on the leg rod; A support plate (21) is arranged on the bracket; the support plate (21) is located in front of the leg rod, and the support plate (21) is used to support the leg.

2. The leg fixing mechanism according to claim 1, characterized in that: The support plate (21) is designed such that when the leg supported on the support plate (21) moves with the leg rod, the posture of the support plate (21) can be adaptively adjusted according to the movement state of the leg.

3. The leg fixing mechanism according to claim 2, characterized in that: The posture of the pallet (21) includes the up-and-down position and / or the left-and-right position and / or the front-and-back position and / or the inclination angle of the pallet (21); wherein the inclination angle of the pallet (21) is the angle between the main board surface of the pallet (21) and the vertical plane.

4. The leg fixing mechanism according to claim 2, characterized in that: The support plate (21) is movably arranged on the bracket; the movement of the support plate (21) relative to the bracket includes at least one of left-right movement, up-down movement, front-back movement and rotation.

5. The leg fixing mechanism according to claim 4, characterized in that: The bracket comprises a frame body (11) and a shaft (12); one end of the frame body (11) is used to be arranged on the leg rod, and the other end of the frame body (11) is provided with the shaft (12); The front plate surface (211) of the support plate (21) is arranged on the shaft (12) through a first connecting component, and the support plate (21) can slide along the extension direction of the shaft (12) and / or can rotate around the shaft (12).

6. The leg fixing mechanism according to claim 5, characterized in that: When the frame body (11) is arranged on the leg rod, the shaft (12) extends in the horizontal direction, and the shaft (12) is located in front of the leg rod; The support plate (21) slides left and right along the shaft (12) to adjust the horizontal distance between the leg and the leg rod; the support plate (21) rotates around the shaft (12) to adjust the angle between the leg and the leg rod.

7. The leg fixing mechanism according to claim 5, characterized in that: The first connecting component comprises a base plate (31) and a sleeve (32); the base plate (31) is arranged on the front plate surface (211) of the support plate (21), the outer side wall of the sleeve (32) is arranged on the base plate (31), and the through hole of the sleeve (32) is sleeved on the shaft (12); the sleeve (32) can slide along the extension direction of the shaft (12) and / or can rotate around the shaft (12).

8. The leg fixing mechanism according to claim 5, characterized in that: The first connecting component comprises a connecting seat (33); the connecting seat (33) comprises a main board (331) and a side board (332); the main board (331) is arranged on the front board surface (211) of the supporting plate (21); the side board (332) and the main board (331) are connected; an axial hole is formed at one end of the side board (332) away from the main board (331), and the shaft (12) is passed through the axial hole; the side board (332) can slide along the extension direction of the shaft (12) and / or can rotate around the shaft (12).

9. The leg fixing mechanism according to claim 4, characterized in that: One end of the bracket is used to be arranged on the leg rod, and the other end of the bracket is formed with a slide groove (141); The front plate surface (211) of the support plate (21) and the slide groove (141) are connected via a second connecting assembly, and the support plate (21) can slide along the extension direction of the slide groove (141) and / or can rotate relative to the slide groove (141).

10. The leg fixing mechanism according to claim 9, characterized in that: The bracket is a bent plate-shaped structure and comprises a first bracket section (13) and a second bracket section (14); the first bracket section (13) is arranged on the leg rod, the second bracket section (14) is connected to the first bracket section (13) and the second bracket section (14) is used to be arranged in front of the leg rod; the second bracket section (14) is formed with the slide groove (141), and the slide groove (141) extends in the horizontal direction; The support plate (21) slides left and right along the slide groove (141) to adjust the horizontal distance between the leg and the leg rod; the support plate (21) rotates relative to the slide groove (141) to adjust the angle between the leg and the leg rod.

11. The leg fixing mechanism according to claim 9, characterized in that: The second connecting component comprises an elastic member (41), the elastic member (41) comprises an A connecting end (411) and a B connecting end (412), the A connecting end (411) is arranged on the front plate surface (211) of the supporting plate (21), and the B connecting end (412) is arranged in the sliding groove (141) through a sliding rod; The sliding rod can slide left and right along the sliding groove (141) and can rotate relative to the sliding groove (141).

12. The leg fixing mechanism according to claim 11, characterized in that: Two A connection ends (411) are provided; the two A connection ends (411) are respectively located at two ends of the elastic member (41) and the two A connection ends (411) are both arranged on the front plate surface (211) of the support plate (21); the B connection end (412) is located between the two A connection ends (411).

13. The leg fixing mechanism according to claim 1, characterized in that: The leg fixing mechanism further comprises a protection pad (22), wherein the protection pad (22) is arranged on the rear plate surface of the support plate (21), and the protection pad (22) is used to support the legs; Wherein, the bracket and the support plate (21) are both made of hard materials, and the protective pad (22) is made of soft materials.

14. A lower limb exerciser, characterized in that: It comprises a leg rod and a leg fixing mechanism as claimed in any one of claims 1 to 13; the leg rod comprises a thigh rod (51) and a calf rod (52), and the thigh rod (51) and the calf rod (52) are hingedly connected; the thigh rod (51) is detachably provided with the leg fixing mechanism, and the position of the leg fixing mechanism on the thigh rod (51) is adjustable; and / or The calf rod (52) is detachably provided with a leg fixing mechanism, and the position of the leg fixing mechanism on the calf rod (52) is adjustable.

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