A leg support mechanism

Abstract

The present invention discloses a leg rest mechanism, wherein the leg rest mechanism comprises a mounting body, a leg rest support frame, a leg rest and an adjustment assembly, wherein one end of the leg rest support frame is mounted on the mounting body, wherein the adjustment assembly comprises a movable part, wherein the movable part is limited at the other end of the leg rest support frame so as to be movably movable along its extension direction, and the leg rest is mounted on the movable part.

Description

Technical Field

[0001] The invention relates to the field of rehabilitation equipment, and in particular to a leg support mechanism. Background Art

[0002] Nowadays, medical devices are gradually being used to assist users in rehabilitation training. Different parts of the human body have different bone structures. Therefore, medical devices with different structures are needed to assist. The calf is an important part of the human body, which directly determines whether a person can walk normally.

[0003] Rehabilitation equipment is widely used to assist users in rehabilitation training. Rehabilitation equipment is also commonly referred to as a rehabilitation training robot. The leg rest mechanism in the rehabilitation equipment is installed on the main body of the rehabilitation equipment. And it includes a mechanism body, a leg rest support frame and a leg rest. The mechanism body is installed on the rehabilitation equipment. One end of the leg rest support frame is fixed to the rehabilitation equipment. The leg rest is installed at the other end of the leg rest support frame. The leg rest is usually used to fix the user's legs, so that the movement of the user's legs is restricted, thereby preventing the user's legs from excessively moving and aggravating the injury.

[0004] The leg support mechanism in the prior art can fix the user's calf to a certain extent. For example, patent authorization number CN208910866U uses a non-adjustable calf strap to fix the wearer's calf to the exoskeleton, and the strap cannot rotate with the rotation of the calf. Therefore, the comfort level is poor and it is easy to loosen. The "transmission device, lower limb rehabilitation exoskeleton and exoskeleton robot" disclosed in patent authorization number CN209286071U adopts a calf support plate solution. The calf fixing part is connected to the calf to fix the calf. The structure is large in size and cannot move with the rotation of the calf.

[0005] However, in general, the structures of the calves of different users are different. Accordingly, after the calves are fixed, the width distance between the axis of the user's calves and the main body of the mechanism is different. After the leg support in the prior art fixes the user's legs, the width distance between the axis of the user's calves and the main body of the mechanism cannot be adjusted. Therefore, the leg support mechanism in the prior art is applicable to a limited number of users. Because if the width distance between the axis of the user's calves and the main body of the mechanism cannot match the body shape of the user's calves, after the user's calves are fixed by the leg support, the user's calves will always be subject to the inward or outward displacement force applied by the leg support on the calves, and this force needs to be balanced by the user's calves.

[0006] In addition, the straps used to bind the user's calves may also become loose and fall off due to the offset force, which may also cause inconvenience to the user.

[0007] On the other hand, the leg support in the prior art needs to be used to fix the user's calf. After the user's calf is fixed, it needs to be moved and rotated when doing rehabilitation exercises. However, the leg support in the prior art cannot be rotated, so when the user's calf rotates, the user's calf will feel uncomfortable on the one hand, and the bandage that binds the user's calf will also be easily loosened on the other hand. Summary of the invention

[0008] One object of the present invention is to provide a leg rest mechanism, wherein the leg rest of the leg rest mechanism is rotatably mounted on a leg rest support frame, so that when the user's calf rotates, the leg rest can rotate together to a predetermined angle, thereby avoiding causing discomfort to the user's legs.

[0009] One object of the present invention is to provide a leg rest mechanism, wherein the distance between the leg rest of the leg rest mechanism and the mechanism body of the leg rest mechanism is set to be adjustable, so that the leg rest mechanism can be suitable for users with different calf shapes.

[0010] Another object of the present invention is to provide a leg rest mechanism, wherein the leg rest of the leg rest mechanism is configured to be used to fix a strap, and the strap is not easy to loosen when used to fix the user's calf.

[0011] In order to achieve at least one of the above purposes of the present invention, the present invention provides a leg support mechanism, wherein the leg support mechanism comprises:

[0012] A mounting body;

[0013] a leg support frame, wherein one end of the leg support frame is mounted on the mounting body;

[0014] One-leg support; and

[0015] An adjustment component, wherein the adjustment component includes a movable part, wherein the movable part is limited at the other end of the leg rest support frame so as to be movably movable along its extension direction, and the leg rest is installed on the movable part.

[0016] According to an embodiment of the present invention, the movable member is rotatably connected to the leg rest support frame.

[0017] According to one embodiment of the present invention, the adjustment assembly includes at least one positioning member, the movable member has a rotating end and a mounting end, the movable member forms a slideway groove between the rotating end and the mounting end, the movable member is provided with at least two circumferential grooves at intervals on the outer wall along the circumference of the movable member, one end of the circumferential groove is arranged to be connected to the slideway groove, and the other end of the circumferential groove is a closed end, one end of the leg support frame is provided with a rotating channel in a direction coaxial with the extending direction of the movable member, and the leg support frame is provided in a direction perpendicular to the extending direction of the rotating channel. At least one limiting channel is set, and the limiting channel is set to be connected to the rotating channel. The rotating end of the movable part is inserted into the rotating channel, and after the rotating end of the movable part is set to be inserted into the rotating channel, one of the circumferential grooves on the movable part is aligned with the limiting channel, and the positioning part is set to be movably inserted into the limiting channel along the direction in which the limiting channel extends, and after the positioning part is inserted into the limiting channel, the end of the positioning part is inserted into the circumferential groove to limit the sliding of the movable part along the extension direction of the movable part.

[0018] According to an embodiment of the present invention, the positioning element is implemented as a pin.

[0019] According to an embodiment of the present invention, a plurality of circumferential grooves are arranged on the outer wall of the circumferential groove of the movable member at the same interval.

[0020] According to one embodiment of the present invention, the leg rest support frame is rotatably mounted on the mounting body, wherein the leg rest mechanism includes an unlockable mechanism, and the leg rest support frame is unlockably locked to the mounting body through the unlockable mechanism, so that the transverse portion of the leg rest support frame can be switched between an unlocked state of free rotation and a locked state of being locked.

[0021] According to one embodiment of the present invention, the unlockable mechanism includes a locking tongue, a locking groove, a guide block and an elastic member, the locking groove is arranged on the installation body, the leg support frame has a transverse portion and an extension portion extending integrally from one end of the transverse portion to form an L-shape together with the transverse portion, wherein the rotation channel and the limiting channel are arranged on the extension portion, wherein the transverse portion is arranged to form a locking channel extending from the end of the transverse portion along the direction in which the transverse portion extends, and the transverse portion forms a force application channel along a direction perpendicular to the extension direction of the locking channel, and the elastic member is arranged on the inner wall of the locking channel and one end of the locking tongue in a compressed manner, when the leg support frame rotates a predetermined angle to align the force application channel with the locking groove, the locking tongue is movably pressed into the locking channel by the elastic member, and when the locking tongue is driven by the guide block to compress the elastic member, the locking tongue slides out of the locking groove to allow the leg support frame to rotate relative to the installation body.

[0022] According to one embodiment of the present invention, a through hole is provided in the middle portion of the lock tongue, wherein the side wall of the lock tongue defining the through hole forms a force-bearing inclined surface, the guide block has a pressing inclined surface, the guide block is arranged to penetrate into the through hole, and the pressing inclined surface of the guide block is fitted to the force-bearing inclined surface, so that when the guide block is pressed, the force-bearing inclined surface of the lock tongue is subjected to the pressure applied by the pressing inclined surface of the guide block to squeeze the elastic member, thereby compressing the elastic member.

[0023] Further objects and advantages of the present invention will be fully apparent through understanding of the following description.

[0024] These and other objects, features and advantages of the present invention will be fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional view of a leg support mechanism of the present invention is shown.

[0026] Figure 2 An exploded view of the leg support mechanism of the present invention is shown.

[0027] Figure 3 An angled cross-sectional view of the leg support mechanism of the present invention is shown.

[0028] Figure 4 A schematic diagram is shown when the sliding member of the leg rest mechanism of the present invention is confined to the leg rest support frame.

[0029] Figure 5 A schematic diagram is shown in which the sliding member of the leg rest mechanism of the present invention is slidable relative to the leg rest support frame. DETAILED DESCRIPTION

[0030] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0031] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0032] In conjunction with the instruction manual Figures 1 to 5 A leg support mechanism according to a preferred embodiment of the present invention will be described in detail below, wherein the leg support mechanism can be installed on a rehabilitation device to fix the user's calf to prevent excessive movement of the user's calf and aggravate the injury.

[0033] The leg support mechanism includes a mounting body 10, a leg support frame 20 and a leg support 30. The mounting body 10 is configured to be fixed to a rehabilitation device. One end of the leg support frame 20 is mounted on the mounting body 10.

[0034] The leg support mechanism further includes an adjustment component 40. The adjustment component 40 includes a movable member 41. The leg support 30 is fixed to the movable member 41, wherein the movable member 41 is limited at the other end of the leg support frame 20 so as to be translatably movable along its extension direction, so that the distance between the leg support 30 fixed to the movable member 41 and the mounting body 10 can be adjusted.

[0035] It can be understood that since the distance between the leg rest 30 and the mounting body 10 can be adjusted, when the user's calf shape is different, by translating the movable part 41, the distance between the axis of the user's calf fixed to the leg rest 30 and the mounting body 10 can be adjusted, thereby making the leg rest mechanism suitable for users with different calf shapes.

[0036] Specifically, the movable member 41 has a rotating end 4101 and a mounting end 4102. The movable member 41 forms a slideway groove 4103 between the rotating end 4101 and the mounting end 4102. The movable member 41 is provided with at least two circumferential grooves 4104 at intervals on the outer wall along the circumference of the movable member 41. One end of the circumferential groove 4104 is arranged to communicate with the slideway groove 4103. The other end of the circumferential groove 4104 is a closed end.

[0037] The adjustment assembly 40 further includes at least one positioning member 42. A rotation channel 201 is provided at one end of the leg support frame 20 in a direction coaxial with the extending direction of the movable member 41. The leg support frame 20 is provided with at least one limiting channel 202 in a direction perpendicular to the extending direction of the rotation channel 201. The limiting channel 202 is provided to communicate with the rotation channel 201.

[0038] The rotating end 4101 of the movable member 41 is inserted into the rotating channel 201 , and after the rotating end 4101 of the movable member 41 is arranged to penetrate into the rotating channel 201 , one of the circumferential grooves 4104 on the movable member 41 is aligned with the limiting channel 202 .

[0039] The positioning member 42 is configured to be movably inserted into the limiting channel 202 along the extension direction of the limiting channel 202, and after the positioning member 42 is inserted into the limiting channel 202, the end of the positioning member 42 is inserted into the circumferential groove 4104 to limit the sliding of the movable member 41 along the extension direction of the movable member 41.

[0040] In addition, since the circumferential groove 4104 is provided on the movable part 41, the movable part 41 can rotate relative to the leg support frame 20 with the extending direction of the movable part 41 as the rotation axis.

[0041] Therefore, when the user's calf is fixed on the leg support 30, if the distance between the leg support 30 and the installation body 10 needs to be adjusted, the leg support 30 fixed on the movable part 41 can be rotated until the slideway groove 4103 is aligned with the positioning member 42. Subsequently, the leg support 30 is pushed and pulled axially, so that the movable part 41 can be driven to slide axially relative to the installation body 10, so that the positioning member 42 is moved out of the circumferential groove 4104, and then the movable part 41 can slide relative to the leg support frame 20 along the extension direction of the movable part 41. When the movable part 41 slides a predetermined distance and is aligned with another circumferential groove 4104, the leg support is rotated again, so that the positioning member 42 is reinserted into another circumferential groove 4104 aligned with the limiting channel 202, so that the movable part 41 is kept in the adjusted position. Then, the distance between the leg support 30 installed on the movable part 41 and the installation body 10 can be adjusted and limited.

[0042] Thus, the leg support mechanism can be suitable for users with different calf shapes. In addition, since the leg support 30 can be adjusted according to the body shape of the user's calf, the leg support 30 can not only be suitable for more users, but also the user's calf will not be subjected to the offset force of the leg support 30 when the user uses the leg support mechanism.

[0043] On the other hand, when the user's calf rotates, since the leg rest 30 can be driven to rotate by the movable part 41 of the adjustment assembly 40, the leg rest 30 can rotate synchronously with the user's calf, thereby giving the user a better experience.

[0044] It is worth mentioning that the circumferential grooves 4104 on the movable member 41 are arranged at equal intervals. It can be understood that, through the cooperation between the positioning member 42 and the circumferential grooves 4104 arranged at different positions on the movable member 41 away from the rotating end 4101, the adjustment assembly 40 can adjust the distance between the leg support 30 and the installation body 10.

[0045] Preferably, the adjustment assembly 40 further includes a sliding bearing 43. The sliding bearing 43 is sleeved on the rotating channel 201. The movable member 41 is sleeved on the sliding bearing 43 to reduce the resistance of the movable member 41 during sliding.

[0046] Preferably, in the present invention, the positioning member 42 can be implemented as a pin.

[0047] The leg support frame 20 has a transverse portion 21 and an extension portion 22. The extension portion 22 extends integrally from one end of the transverse portion 21 and forms an L-shape together with the transverse portion 21. The extension portion 22 forms the rotation channel 201 and the limit channel 202. The transverse portion 21 is rotatably mounted on the mounting body 10, so that when the user's calf needs to be removed from the leg support mechanism, it is only necessary to rotate the leg support frame 20 relative to the mounting body 10.

[0048] The leg support mechanism further comprises an unlockable mechanism 50. The leg support frame 20 is unlockably locked to the mounting body 10 by the unlockable mechanism 50, so that the transverse portion 21 of the leg support frame 20 can be switched between an unlocked state of free rotation and a locked state.

[0049] Specifically, the unlockable mechanism 50 includes a locking tongue 51, a locking groove 52, a guide block 53 and an elastic member 54. The transverse portion 21 is provided with a locking channel 2101 extending from the end of the transverse portion 21 along the direction in which the transverse portion 21 extends. The transverse portion 21 forms a force-applying channel 2102 in a direction perpendicular to the extending direction of the locking channel 2101. When the force-applying channel 2102 is aligned with the locking groove 52, the locking tongue 51 is movably inserted into the locking channel 2101. The elastic member 54 is provided in a compressed manner on the inner wall of the locking channel 2101 and one end of the locking tongue 51. The locking groove 52 is provided on the installation body 10.

[0050] When the leg support frame 20 rotates a predetermined angle to align the locking channel 2101 with the locking groove 52, the locking tongue 51 is subjected to the restoring force of the elastic member 54 so that the guide block 53 is pressed and inserted into the locking groove 52. After the guide block 53 is operated, the locking tongue 51 moves out of the locking groove 52 and compresses the elastic member 54 at the same time.

[0051] Specifically, a through hole 5101 is provided in the middle of the locking tongue 51. The side wall of the locking tongue 51 defining the through hole 5101 forms a force-bearing inclined surface 5102. The guide block 53 has a pressing inclined surface 5301. The guide block 53 is arranged to penetrate into the through hole 5101, and the pressing inclined surface 5301 of the guide block 53 is fitted to the force-bearing inclined surface 5102, so that when the guide block 53 is pressed, the force-bearing inclined surface 5102 of the locking tongue 51 is subjected to the pressure applied by the pressing inclined surface 5301 of the guide block 53 to squeeze the elastic member 54, thereby compressing the elastic member 54, and at the same time, the locking tongue 51 moves out of the locking groove 52, so that the leg support frame 20 can rotate freely relative to the mounting body 10. When the force channel 2102 is aligned with the locking groove 52 and the pressure on the guide block 53 is removed, the elastic member 54 drives the locking tongue 51 to be inserted into the locking groove 52 under the action of its restoring force, so that the leg support frame 20 can be fixed relative to the installation body 10.

[0052] It should be understood by those skilled in the art that the embodiments of the present invention described above are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A leg support mechanism, characterized in that: The leg support mechanism comprises: A mounting body; a leg support frame, wherein one end of the leg support frame is mounted on the mounting body; One-leg support; and an adjustment assembly, wherein the adjustment assembly comprises a movable member, wherein the movable member is limited at the other end of the leg support frame so as to be translatably movable along its extension direction, and the leg support is mounted on the movable member; The adjustment assembly includes at least one positioning member, the movable member has a rotating end and a mounting end, the movable member forms a slideway groove between the rotating end and the mounting end, the movable member is provided with at least two circumferential grooves at intervals on the outer wall along the circumference of the movable member, one end of the circumferential groove is arranged to be connected to the slideway groove, and the other end of the circumferential groove is a closed end, one end of the leg support frame is provided with a rotating channel in a direction coaxial with the extending direction of the movable member, and the leg support frame is provided with at least one A limiting channel, the limiting channel is configured to be connected to the rotating channel, the rotating end of the movable part is inserted into the rotating channel, and after the rotating end of the movable part is configured to be inserted into the rotating channel, a circumferential groove on the movable part is aligned with the limiting channel, the positioning part is configured to be movably inserted into the limiting channel along the direction in which the limiting channel extends, and after the positioning part is inserted into the limiting channel, the end of the positioning part is inserted into the circumferential groove to limit the movable part from sliding along the extension direction of the movable part.

2. The leg support mechanism according to claim 1, characterized in that: The movable member is rotatably connected to the leg support frame.

3. The leg support mechanism according to claim 1, characterized in that: The positioning element is designed as a pin.

4. The leg support mechanism according to claim 1, characterized in that: A plurality of circumferential grooves are arranged on the outer wall of the circumferential groove of the movable member at the same interval.

5. The leg support mechanism according to claim 1, characterized in that: The leg rest support frame is rotatably mounted on the mounting body, wherein the leg rest mechanism includes an unlockable mechanism, and the leg rest support frame is unlockably locked to the mounting body through the unlockable mechanism, so that the lateral portion of the leg rest support frame can be switched between an unlocked state in which it can rotate freely and a locked state in which it is locked.

6. The leg support mechanism according to claim 5, characterized in that: The unlockable mechanism comprises a locking tongue, a locking groove, a guide block and an elastic member, the locking groove is arranged on the installation body, the leg support frame has a transverse portion and an extension portion extending integrally from one end of the transverse portion to form an L-shape together with the transverse portion, wherein the rotation channel and the limiting channel are arranged on the extension portion, wherein the transverse portion is arranged to form a locking channel extending from the end of the transverse portion along the direction in which the transverse portion extends, and the transverse portion forms a force application channel along a direction perpendicular to the extension direction of the locking channel, and the elastic member is arranged on the inner wall of the locking channel and one end of the locking tongue in a compressed manner, when the leg support frame rotates a predetermined angle to align the force application channel with the locking groove, the locking tongue is movably pressed into the locking channel by the elastic member, and when the locking tongue is driven by the guide block to compress the elastic member, the locking tongue slides out of the locking groove to allow the leg support frame to rotate relative to the installation body.

7. The leg support mechanism according to claim 6, characterized in that: A through hole is set in the middle of the lock tongue, wherein the side wall of the lock tongue defining the through hole forms a force-bearing inclined surface, and the guide block has a pressing inclined surface. The guide block is set to penetrate into the through hole, and the pressing inclined surface of the guide block is attached to the force-bearing inclined surface, so that when the guide block is pressed, the force-bearing inclined surface of the lock tongue is subjected to the pressure applied by the pressing inclined surface of the guide block to squeeze the elastic member, thereby compressing the elastic member.

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