Adjustable resistance flexion and extension device for lower limb rehabilitation training

Abstract

The utility model relates to the technical field of lower limb rehabilitation training equipment, in particular to a resistance-adjustable flexion and extension device for lower limb rehabilitation training. According to the technical scheme, the adjustable weight-increasing seat comprises a seat support and a pair of flexion and extension mechanisms installed on the seat support and used for training the lower limbs of a user, and further comprises a plurality of adjusting weight-increasing blocks arranged on the seat support in a linear mode, and the adjusting weight-increasing blocks are provided with buckling mechanisms used for clamping the weight-increasing blocks needing to be adjusted. According to the resistance flexion and extension device, the flexion and extension mechanism, the buckle mechanism, the transmission mechanism, the pulling mechanism and other structures are matched, so that a user can easily adjust the weight in the exercise process when using the resistance flexion and extension device, and does not need to worry about falling or accidental injury of dumbbell pieces. And then the user can adjust the training intensity at any time according to own physical conditions and requirements, so that the exercise effect is improved. In this way, the risk that the dumbbell pieces fall off or slide off accidentally can be reduced, and the safety of a user in the exercise process can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lower limb rehabilitation training equipment, in particular to an adjustable resistance flexor and extender for lower limb rehabilitation training. Background Art

[0002] Lower limb rehabilitation training equipment can help increase lower limb muscle activity, thereby promoting blood circulation and accelerating recovery. This training typically involves the use of a resistance flexor / extension device, which primarily trains and rehabilitates lower limb muscles by repeatedly bending and straightening the leg.

[0003] Some resistance flexors usually require the installation and removal of dumbbell plates to adjust the weight, which makes the user face the risk of dumbbell plates slipping or accidentally hitting the user during use. To this end, the utility model designs an adjustable resistance flexor for lower limb rehabilitation training. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the background technology and to provide an adjustable resistance flexor and extender for lower limb rehabilitation training.

[0005] The technical solution of the utility model: an adjustable resistance flexor and extension device for lower limb rehabilitation training, including a seat bracket and a pair of flexion and extension mechanisms installed on the seat bracket for users to train their lower limbs, and also includes: a plurality of linearly arranged adjustment weight blocks arranged on the seat bracket, the adjustment weight blocks are provided with a snap mechanism for clamping the required adjustment weight blocks; a transmission mechanism installed on the seat bracket for pulling the snap mechanism to drive the clamped adjustment weight blocks to rise and fall.

[0006] Optionally, the snap mechanism includes an adjusting rod that is vertically inserted into the adjusting weight block, and the adjusting weight block is provided with a socket for inserting the adjusting rod, and the bottom end of the adjusting rod is provided with a plurality of rotating grooves distributed in a circular array, and the interior of the rotating groove is rotatably connected with a rotating block for limiting the adjusting rod from passing through the socket, and the interior of the rotating groove is provided with a pushing spring for pushing the rotating block to rotate out of the rotating groove, and the adjusting rod is provided with a pulling mechanism for retracting the plurality of rotating blocks into the rotating groove.

[0007] Optionally, the pulling mechanism includes a sliding groove provided on the adjusting rod, a sliding pull plate is slidably connected to the sliding groove and the adjusting rod, a plurality of pull ropes corresponding to the rotating grooves are provided inside the adjusting rod, and a plurality of movable through-holes for the bottom ends of the pull ropes to pass through are provided at the bottom of the adjusting rod, and the bottom ends of the pull ropes are movably passed through the corresponding push springs and are fixedly connected to the rotating block.

[0008] Optionally, the top fixing sleeve of the adjusting rod is provided with a fixing plate which is opposite to the sliding pull plate in the upper and lower directions.

[0009] Optionally, the transmission mechanism includes a plurality of second pulleys connected to the bottom of the seat bracket and corresponding to the upper and lower adjustment rods. The seat bracket is provided with a pair of support blocks corresponding to the second pulleys. The internal rotation of the support blocks is connected to the first pulley. The flexion and extension mechanisms are provided with an L-shaped connecting rod, and one end of the L-shaped connecting rod is fixedly connected to a connecting rope. The end of the connecting rope away from the L-shaped connecting rod moves through the first pulley and the second pulley in turn and is connected to the top end of the adjustment rod.

[0010] Optionally, the seat bracket is fixedly connected with a plurality of pairs of limit sliding rods that are movable through the adjustable weight-adding blocks and are used to limit the lifting direction of the adjustable weight-adding blocks.

[0011] Optionally, the bottom of each of the adjustable weight-increasing blocks is provided with a pair of bottom protrusions for adjusting the spacing between the weight-increasing blocks to allow the buckle mechanism to expand.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This new device utilizes a flexion and extension mechanism, a snap mechanism, a transmission mechanism, and a pull mechanism to allow users to easily adjust the weight during exercise without worrying about dumbbell plates slipping or accidentally hitting the dumbbell. Users can also adjust the intensity of the exercise at any time based on their physical condition and needs, thereby enhancing their training results. This not only reduces the risk of dumbbell plates accidentally falling off or sliding, but also ensures user safety during exercise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of the utility model of an adjustable resistance flexor and extender for lower limb rehabilitation training is given;

[0015] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the connection between the middle adjustment weight block and the adjustment rod;

[0016] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle adjustment weight-increasing block.

[0017] Figure numerals: 1. seat bracket; 2. flexion and extension mechanism; 3. L-shaped connecting rod; 4. support block; 5. first pulley; 6. second pulley; 7. connecting rope; 8. adjustment weight block; 81. socket; 9. adjustment plug rod; 91. slide groove; 92. sliding pull plate; 93. fixed plate; 94. pull rope; 95. rotating groove; 96. rotating block; 97. push spring; 98. movable through hole; 10. limit slide rod; 11. bottom protrusion. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model 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 limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or apparatus. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Example

[0025] like Figure 1-3 As shown, the adjustable resistance flexor and extension device for lower limb rehabilitation training proposed in the utility model includes a seat bracket 1 and a pair of flexion and extension mechanisms 2 installed on the seat bracket 1 for users to train their lower limbs. The seat bracket 1 is fixedly connected with a plurality of pairs of movable limit slides 10 that penetrate the adjustable weight blocks 8 and are used to limit the lifting direction of the adjustable weight blocks 8. It also includes: a plurality of linearly arranged adjustable weight blocks 8 arranged on the seat bracket 1, and the bottom of the adjustable weight blocks 8 are provided with a pair of bottom protrusions 11 for allowing the spacing between the adjustable weight blocks 8 to be expanded by the snap mechanism. The adjustable weight blocks 8 are provided with a snap mechanism for clamping the required adjustable weight blocks 8; a transmission mechanism installed on the seat bracket 1 for pulling the snap mechanism to drive the clamped adjustable weight blocks 8 to rise and fall.

[0026] Furthermore, the snap mechanism includes an adjusting rod 9 that is vertically inserted into the adjusting weight block 8. The function of the adjusting rod 9 is to adjust the resistance of the resistance flexor. The top fixed sleeve of the adjusting rod 9 is provided with a fixing plate 93 that is opposite to the sliding plate 92. The function of the fixing plate 93 is to allow the hand to use force when the sliding plate 92 moves upward. The adjusting weight block 8 is provided with a socket 81 for inserting the adjusting rod 9. The bottom end of the adjusting rod 9 is provided with three rotating grooves 95 distributed in a circular array. The interior of the rotating groove 95 is rotatably connected to a rotating block 96 for limiting the adjusting rod 9 from passing through the socket 81. The function of the rotating block 96 is to make the size after opening larger than the size of the socket 81, so that the bottom end of the adjusting rod 9 cannot pass through the socket 81. A push spring 97 is provided inside the rotation slot 95 for pushing the rotation block 96 to rotate outward from the rotation slot 95. The push spring 97 causes the rotation block 96 to automatically rotate outward from the rotation slot 95 and open to engage the insertion hole 81 without being acted upon by external forces. The adjustment rod 9 is provided with a pulling mechanism for retracting the plurality of rotation blocks 96 into the rotation slot 95.

[0027] Secondly, the pulling mechanism includes a slot 91 provided on the adjustment rod 9. The slot 91 is sized to accommodate the lifting and sliding travel of a sliding plate 92. A sliding plate 92 is slidably connected to the slot 91 and the adjustment rod 9. Inside the adjustment rod 9, there are multiple drawstrings 94 corresponding to the rotating slots 95. These drawstrings 94 are made of nylon, a material with high strength and wear resistance, making them suitable for various tension exercises. They are not easily deformed, have high tensile strength, and offer a long service life. The bottom of the adjustment rod 9 is provided with multiple movable perforations 98 for the bottom ends of the drawstrings 94 to pass through. The bottom ends of the drawstrings 94 flexibly pass through corresponding push springs 97 and are fixedly connected to the rotating block 96.

[0028] Furthermore, the transmission mechanism includes a plurality of second pulleys 6 connected to the bottom of the seat frame 1 and corresponding to the upper and lower adjustment rods 9. The seat frame 1 is provided with a pair of support blocks 4 corresponding to the second pulleys 6. The support blocks 4 are internally rotatably connected to the first pulley 5. The first pulley 5 and the second pulley 6 are pulleys, and a pulley is a simple machine mainly used to change the direction and magnitude of force. It consists of a circular wheel and an axis. The axis is fixed to the frame, and the wheel can rotate freely around the axis. The working principle of the pulley is to use the lever principle of force to achieve force transmission by changing the direction and magnitude of force. The flexion and extension mechanism 2 is provided with an L-shaped connecting rod 3. One end of the L-shaped connecting rod 3 is fixedly connected to a connecting rope 7. The material of the connecting rope 7 is a steel wire rope, which is wear-resistant and strong. The end of the connecting rope 7 away from the L-shaped connecting rod 3 moves through the first pulley 5 and the second pulley 6 in sequence and is connected to the top of the adjustment rod 9.

[0029] In this embodiment, when the lower limb rehabilitation training needs to use an adjustable resistance flexor and extender, such as Figure 1 As shown, the user first sits on the seat frame 1, places their feet on the flexion and extension mechanism 2, and maintains their body stability. Then, they place their hands on the armrests for balance and begin rehabilitation training. During rehabilitation training, if the resistance level of the resistance flexor and extension device needs to be adjusted, they first grasp the sliding plates 92 on the adjustment rod 9 in sequence. Using the force of the fixed plate 93, their hands slide the sliding plates 92 upward along the slide grooves 91 on the adjustment rod 9. The sliding plates 92 drive the multiple pull cords 94 inside the adjustment rod 9 upward. The bottom ends of the pull cords 94 pass through the movable perforations 98 and then through the push springs 97, pulling the rotating block 96 back into the rotating groove 95. At this point, the rotating block 96 no longer restricts the adjustment rod 9 from sliding upward within the socket 81, allowing the snap mechanism at the bottom of the adjustment rod 9 to be adjusted according to the desired resistance level. The more adjustment weights 8 are engaged by the snap mechanism at the bottom of the adjustment rod 9, the greater the resistance level of the resistance flexor and extension device. Conversely, the resistance level of the resistance flexor and extension device decreases. Then the user's legs drive a pair of flexion and extension mechanisms 2 on the seat frame 1. At this time, the flexion and extension mechanism 2 will drive the L-shaped connecting rod 3 to rotate upward, and the bottom of the L-shaped connecting rod 3 pulls one end of the connecting rope 7 to slide through the support of the first pulley 5 and the second pulley 6 in the support block 4. The other end of the connecting rope 7 will pull the multiple adjustable weight blocks 8 clamped by the buckle mechanism to rise and fall. When the multiple adjustable weight blocks 8 are raised and lowered, the user's lower limbs will generate resistance when driving the flexion and extension mechanism 2.

[0030] The preferred embodiments of the present invention described above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable resistance flexor and extension device for lower limb rehabilitation training, comprising a seat support (1) and a pair of flexion and extension mechanisms (2) mounted on the seat support (1) for a user to train lower limbs, characterized in that: Also includes: A plurality of linearly arranged adjustable weight-increasing blocks (8) are provided on the seat support (1), wherein the adjustable weight-increasing blocks (8) are provided with a snap mechanism for snapping a required adjustable weight-increasing block (8); A transmission mechanism installed on the seat support (1) is used to pull the buckle mechanism to drive the clamped adjustable weight-increasing block (8) to rise and fall.

2. The adjustable resistance flexor and extension device for lower limb rehabilitation training according to claim 1, characterized in that: The buckle mechanism comprises an adjusting rod (9) vertically inserted into the adjusting weight-increasing block (8), the adjusting weight-increasing block (8) is provided with a socket (81) for inserting the adjusting rod (9), the bottom end of the adjusting rod (9) is provided with a plurality of rotating grooves (95) distributed in a circumferential array, the interior of the rotating groove (95) is rotatably connected with a rotating block (96) for limiting the adjusting rod (9) from passing through the socket (81), the interior of the rotating groove (95) is provided with a pushing spring (97) for pushing the rotating block (96) to rotate out of the rotating groove (95), and the adjusting rod (9) is provided with a pulling mechanism for retracting the plurality of rotating blocks (96) toward the rotating groove (95).

3. The adjustable resistance flexor and extender for lower limb rehabilitation training according to claim 2, characterized in that: The pulling mechanism includes a slide groove (91) provided on the adjusting rod (9), a sliding pull plate (92) being slidably connected to the slide groove (91) and the adjusting rod (9), a plurality of pull ropes (94) corresponding to the rotating grooves (95) being provided inside the adjusting rod (9), a plurality of movable through holes (98) for the bottom ends of the pull ropes (94) to pass through being provided at the bottom of the adjusting rod (9), the bottom ends of the pull ropes (94) being movably passed through the corresponding push springs (97) and then fixedly connected to the rotating block (96).

4. The adjustable resistance flexor and extender for lower limb rehabilitation training according to claim 2, characterized in that: The top fixed sleeve of the adjusting rod (9) is provided with a fixing plate (93) which is opposite to the sliding pull plate (92) in the upper and lower parts.

5. The adjustable resistance flexor and extender for lower limb rehabilitation training according to claim 1, characterized in that: The transmission mechanism comprises a plurality of second pulleys (6) connected to the bottom of the seat support (1) and corresponding to the upper and lower adjustment rods (9); the seat support (1) is provided with a pair of support blocks (4) corresponding to the second pulleys (6); the support blocks (4) are internally rotatably connected to the first pulley (5); the flexion and extension mechanism (2) is provided with an L-shaped connecting rod (3); one end of the L-shaped connecting rod (3) is fixedly connected to a connecting rope (7); the end of the connecting rope (7) away from the L-shaped connecting rod (3) is movable through the first pulley (5) and the second pulley (6) in turn, and then connected to the top end of the adjustment rod (9).

6. The adjustable resistance flexor and extender for lower limb rehabilitation training according to claim 1, characterized in that: The seat support (1) is fixedly connected with a plurality of pairs of limit sliding rods (10) which are movable and penetrate the adjustable weight-increasing block (8) and are used to limit the lifting direction of the adjustable weight-increasing block (8).

7. The adjustable resistance flexor and extender for lower limb rehabilitation training according to claim 1, characterized in that: The bottom of each of the adjustable weight-increasing blocks (8) is provided with a pair of bottom protrusions (11) for adjusting the spacing between the adjustable weight-increasing blocks (8) to allow the buckle mechanism to unfold.

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