Auxiliary mechanism for lower limb rehabilitation equipment

Abstract

The invention discloses an auxiliary mechanism for lower limb rehabilitation equipment, and belongs to the technical field of walking auxiliary devices.The auxiliary mechanism comprises two supports arranged in parallel, the two supports are connected through a connecting plate, the two ends of each support are bent downwards, and supporting legs are slidably installed at the two ends of each support; each support is provided with a first spring for maintaining the relative position of the support and the corresponding supporting leg, and each support is provided with a locking piece capable of locking the corresponding supporting leg at any position. According to the auxiliary mechanism, the supporting legs are installed at the two ends of the support in the sliding mode, the four supporting legs of the auxiliary mechanism can be freely adjusted, the locking pieces capable of locking the supporting legs on the support are arranged on the support, and when the auxiliary mechanism is used on a horizontal road surface, the auxiliary mechanism can adapt to users of different heights through synchronous contraction of the four supporting legs; when the auxiliary mechanism is used on an uneven road surface, the auxiliary mechanism can adapt to the uneven road surface through asynchronous contraction of the four supporting legs, so that it is ensured that the support can be in a vertical state, and the auxiliary mechanism can be stably placed.

Description

Technical Field

[0001] The present invention relates to the technical field of walking assistance devices, and specifically discloses an auxiliary mechanism for a lower limb rehabilitation device. Background Art

[0002] Postoperative rehabilitation is a very important link after surgical treatment, which can promote wound healing, restore some functions of the body, and prevent complications, etc. It mainly provides physical therapy, assists in enhancing muscle strength, improves joint range of motion, and promotes blood circulation through auxiliary devices; among them, a walking aid is a device used to assist patients in walking to enhance muscle strength. In actual application, a walking aid can also assist disabled people or the elderly in walking.

[0003] For example, the patent with the publication number CN114159279B, and the publication date is December 19, 2023. It discloses a walking assistance device for lower limb rehabilitation, including a mounting rod and an arc-shaped plate. Mounting rods are provided on both sides of the arc-shaped plate; universal wheels, universal wheels are rotatably provided on one side of the lower part of the mounting rod; rotating shafts, rotating shafts are rotatably provided on one side of the lower part of the mounting rod; rollers, rollers are provided on the inner sides of the rotating shafts; a rotating assembly, a rotating assembly is provided on one side of the lower part of the mounting rod; friction discs, friction discs are provided on the outer sides of the rotating shafts; friction blocks, friction blocks are symmetrically and slidably provided on the rotating assembly, and the friction blocks cooperate with the friction discs.

[0004] Although the leg length of the existing walking aid can be adjusted, it can only adjust the leg length to match the patient's height to achieve the best use effect. Therefore, during the adjustment process, the leg lengths are mostly made the same. This method is only applicable to horizontal roads. However, in actual use, when encountering inclined or uneven roads, the walking aid cannot be placed vertically, resulting in a decrease in its stability and weakening its walking assistance effect. Summary of the Invention

[0005] The purpose of the present invention is to provide an auxiliary mechanism for a lower limb rehabilitation device with high stability.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An auxiliary mechanism for a lower limb rehabilitation device includes two parallelly arranged brackets. The two brackets are connected by a connecting plate. The two ends of the two brackets are bent downward, and legs are slidably installed at the two ends of the two brackets. First springs for maintaining the relative positions of the brackets and the legs are provided on the brackets, and locking members capable of locking the legs at any position are provided on the brackets.

[0008] In the above-mentioned auxiliary mechanism, each of the two brackets includes a first vertical rod, a first horizontal rod, an inclined rod, a second horizontal rod, and a second vertical rod connected in sequence. The length of the first vertical rod is greater than the length of the second vertical rod, and the first horizontal rod is higher than the second horizontal rod.

[0009] For the above-mentioned auxiliary mechanism, the locking member includes an actuating portion and a driving portion. The actuating portion includes limit blocks provided corresponding to the legs. Each limit block is respectively slidably mounted on the lower portions of the first vertical rod and the second vertical rod. Wedge blocks are slidably mounted in both the first vertical rod and the second vertical rod. The wedge blocks and the limit blocks form an inclined wedge mechanism. When the driving portion drives the wedge blocks to slide vertically, the wedge blocks drive the limit blocks to slide horizontally and press the legs. Second springs for pulling the limit blocks to reset are provided on both the first vertical rod and the second vertical rod.

[0010] For the above-mentioned auxiliary mechanism, the driving portion includes sliding rings sleeved on the first vertical rod and the second vertical rod. The two sliding rings on the first vertical rod and the second vertical rod of the same bracket are connected by an adjusting rod. Third springs for maintaining the positions of the corresponding sliding rings are sleeved on both the first vertical rod and the second vertical rod. The wedge blocks are connected to the corresponding sliding rings through connecting rods.

[0011] For the above-mentioned auxiliary mechanism, a guide rod is fixedly connected to the first horizontal rod. A guide hole for cooperating with the guide rod is provided on the adjusting rod. The lower end of the guide rod extends into the guide hole.

[0012] For the above-mentioned auxiliary mechanism, limit disks are rotatably mounted on the first horizontal rod. The edge positions of the limit disks protrude, and notches for the upper ends of the adjusting rods to pass through are provided at the protruding positions of the limit disks.

[0013] For the above-mentioned auxiliary mechanism, the legs are hollow rods. A support block is slidably mounted in the upper part of the leg. The wedge block bends towards the leg and extends into the interior of the leg to be connected to the support block. A long groove is provided along the circumferential direction of the leg at the position corresponding to the passage of the wedge block.

[0014] For the above-mentioned auxiliary mechanism, wheels are installed at the lower ends of the legs, and a braking assembly is provided inside the legs.

[0015] For the above-mentioned auxiliary mechanism, the wheels are rotatably mounted at the lower ends of the legs through rotating shafts. The braking assembly includes a braking ring sleeved outside the rotating shaft. A rubber pad is provided on the inner wall of the braking ring. A pull rod and a fourth spring for maintaining the relative position between the pull rod and the leg are provided inside the leg. When the fourth spring is in a natural state, the braking ring is separated from the rotating shaft.

[0016] For the above-mentioned auxiliary mechanism, the sliding of the wedge block along the first vertical rod or the second vertical rod has a first stroke and a second stroke. In the first stroke, the wedge block drives the limit block to move towards the leg. In the second stroke, while the limit block holds the leg clamped, the wedge block drives the pull rod to move upward.

[0017] In the above technical solution, for the auxiliary mechanism for the lower limb rehabilitation device provided by the present invention, by slidably mounting the support legs at both ends of the bracket, all four support legs of the auxiliary mechanism can be freely adjusted, and a locking member capable of locking the support legs on the bracket is provided on the bracket. When used on a horizontal road surface, it can adapt to users of different heights through the synchronous contraction of the four support legs. When used on an uneven road surface, it can also adapt to the uneven road surface through the asynchronous contraction of the four support legs, so as to ensure that the bracket can be in a vertical state, so that the auxiliary mechanism can be stably placed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0019] Figure 1 Stereogram of the auxiliary mechanism provided by the embodiment of the present invention;

[0020] Figure 2 Front view of the auxiliary mechanism provided by the embodiment of the present invention;

[0021] Figure 3 Cross-sectional view of the bracket and the support leg provided by the embodiment of the present invention;

[0022] Figure 4 Provided by the embodiment of the present invention Figure 3 Enlarged schematic view at position A in

[0023] Figure 5 Provided by the embodiment of the present invention Figure 3 Enlarged schematic view at position B in

[0024] Figure 6 Schematic diagram of the connection state of the support block and the wedge block provided by the embodiment of the present invention;

[0025] Figure 7 Internal structure schematic diagram of the support block provided by the embodiment of the present invention;

[0026] Figure 8 Enlarged schematic view of the limit block provided by the embodiment of the present invention.

[0027] Description of the reference numerals:

[0028] 1. Bracket; 11. First vertical rod; 111. First spring; 12. First horizontal rod; 121. Guide rod; 122. Limiting disk; 1221. Notch; 13. Inclined rod; 14. Second horizontal rod; 15. Second vertical rod; 2. Connecting plate; 3. Leg; 31. Long slot; 32. Wheel; 321. Rotating shaft; 4. Execution part; 41. Limiting block; 411. Inclined section; 412. Vertical section; 42. Wedge block; 421. Connecting rod; 43. Second spring; 5. Driving part; 51. Sliding ring; 52. Adjusting rod; 521. Lower cross bar; 522. Vertical rod; 5221. Guide hole; 523. Upper cross bar; 53. Third spring; 6. Support block; 61. Square hole; 7. Braking assembly; 71. Braking ring; 72. Fourth spring; 73. Pull rod; 74. Pin shaft; 75. Clamping plate; 76. Fifth spring. Detailed implementation mode

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] As Figures 1-8 shown, an auxiliary mechanism for a lower limb rehabilitation device provided by an embodiment of the present invention includes two brackets 1 arranged in parallel. The two brackets 1 are connected by a connecting plate 2. The two ends of the two brackets 1 are bent downward, and legs 3 are slidably installed at both ends of the two brackets 1. First springs 111 for maintaining the relative positions of the brackets 1 and the legs 3 are arranged on the brackets 1, and locking members capable of locking the legs 3 at any position are arranged on the brackets 1.

[0032] Specifically, the bracket 1 is the main structure of the auxiliary mechanism. Two sets of brackets 1 are placed in parallel. To ensure the stable placement of the two brackets 1, a connecting plate 2 is provided between the two brackets 1. The two ends of the connecting plate 2 are respectively fixedly connected to a set of brackets 1, so that the two brackets 1 can be connected as a whole. The two ends of each bracket 1 are bent downward. Preferably, the two ends of the bracket 1 are vertically downward. In addition, legs 3 are installed at both ends of the bracket 1. Each leg 3 is slidably connected to the bracket 1. The bracket 1 is formed by combining multiple bends of a hollow pipe fitting. In this way, the upper end of the leg 3 extends into the hollow pipe fitting of the bracket 1 to achieve sliding connection with the bracket 1, and elastic members are provided at the positions of the bracket 1 corresponding to the legs 3. The first spring 111 is arranged inside the bracket 1. The end of the leg 3 extending into the bracket 1 abuts against the first spring 111. When the first spring 111 is in the natural state, the leg 3 extends out of the bracket 1 by the largest amount; in addition, a locking member is also provided on the bracket 1. The locking member can lock the leg 3 at any position to ensure that the leg 3 will not shrink into the bracket 1 when stressed, thus playing a stable supporting role.

[0033] The use of this auxiliary mechanism is divided into two cases: When used on a horizontal ground, by pressing the two brackets 1 with both hands respectively. During this process, the legs 3 shrink into their corresponding brackets 1. When the bracket 1 is at the optimal holding height, the legs 3 are locked on the bracket 1 through the locking member; when used on an uneven or inclined ground, similarly, by pressing the two brackets 1 with both hands respectively. At this time, the legs 3 shrink into the brackets 1 appropriately according to the ground conditions where they are located (the shrinkage amount of the legs 3 at the pitted part of the ground is smaller, and the shrinkage amount of the legs 3 at the raised part of the ground is larger), and the legs 3 are locked on the bracket 1 through the locking member.

[0034] The auxiliary mechanism for the lower limb rehabilitation device provided by the embodiment of the present invention, by slidably installing the legs 3 at both ends of the bracket 1, enables the four legs 3 of this auxiliary mechanism to be freely adjusted, and a locking member capable of locking the legs 3 on the bracket 1 is provided on the bracket 1. When used on a horizontal road surface, it can adapt to users of different heights through the synchronous contraction of the four legs 3. When used on an uneven road surface, it can also adapt to the uneven road surface through the asynchronous contraction of the four legs 3, so as to ensure that the bracket 1 can be in a vertical state, so that this auxiliary mechanism can be stably placed.

[0035] Further, both brackets 1 include a first vertical rod 11, a first horizontal rod 12, an inclined rod 13, a second horizontal rod 14, and a second vertical rod 15 connected in sequence. The length of the first vertical rod 11 is greater than the length of the second vertical rod 15, and the first horizontal rod 12 is higher than the second horizontal rod 14.

[0036] Specifically, as Figures 1 to 3As shown in the figure, the bracket 1 is successively connected by a first vertical rod 11, a first horizontal rod 12, an inclined rod 13, a second horizontal rod 14, and a second vertical rod 15. The upper and lower ends of the first vertical rod 11, the upper and lower ends of the second vertical rod 15, the first horizontal rod 12, the inclined rod 13, and the second horizontal rod 14 are all hollow structures to reduce the overall weight of the auxiliary mechanism. The upper end of the leg 3 extends into the interior of the first vertical rod 11 (the second vertical rod 15), and the first spring 111 is also arranged inside the first vertical rod 11 and the second vertical rod 15 and abuts against the solid position in the middle of the first vertical rod 11 or the second vertical rod 15. In this embodiment, by arranging the first horizontal rod 12 and the second horizontal rod 14 at different heights, during actual use, the user can hold the second horizontal rod 14 to get up and then hold the first horizontal rod 12 to walk after standing stably.

[0037] In another embodiment provided by the embodiment of the present invention, the locking member includes an execution part 4 and a driving part 5. The execution part 4 includes a limiting block 41 corresponding to the leg 3, and each limiting block 41 is respectively slidably installed at the lower part of the first vertical rod 11 and the second vertical rod 15. A wedge block 42 is slidably installed in both the first vertical rod 11 and the second vertical rod 15. The wedge block 42 and the limiting block 41 form an inclined wedge mechanism. When the driving part 5 drives the wedge block 42 to slide vertically, the wedge block 42 drives the limiting block 41 to slide horizontally and press the leg 3. A second spring 43 for pulling the limiting block 41 to reset is arranged on both the first vertical rod 11 and the second vertical rod 15.

[0038] Specifically, the execution part 4 includes a limiting block 41 arranged inside the first vertical rod 11 and the second vertical rod 15. The limiting block 41 is slidably installed at the lower part of the first vertical rod 11 (the second vertical rod 15). In addition, a wedge block 42 is slidably installed inside both the first vertical rod 11 and the second vertical rod 15. The opposite surfaces of the wedge block 42 and the limiting block 41 are both provided with inclined surfaces, so that the wedge block 42 can form an inclined wedge mechanism with the corresponding limiting block 41. As Figure 5 shown, the wedge block 42 slides along the axial direction of the first vertical rod 11 (the second vertical rod 15), that is, Figure 5 the vertical direction in Figure 5Horizontal sliding in it, second springs 43 are arranged at positions corresponding to the limiting blocks 41 on the first vertical rod 11 and the second vertical rod 15, the limiting blocks 41 slide along the axial direction of the second springs 43, and two ends of the second springs 43 are respectively connected with the first vertical rod 11 (the second vertical rod 15) and the limiting blocks 41; optionally, the driving part 5 can adopt a brake handle cooperating with a brake wire (not shown in the figure), by installing the brake handle on the first horizontal rod 12, connecting the brake handle with the wedge block 42 through the brake wire, and pinching the brake handle can pull the wedge block 42 to slide upward along the first vertical rod 11 (the second vertical rod 15) to drive the limiting block 41, the principle of which is the same as that of the existing bicycle brake and can be directly applied without further description, and a spring for maintaining the relative position between the wedge block 42 and the first vertical rod 11 (the second vertical rod 15) is arranged to ensure that the wedge block 42 can be reset smoothly after the brake handle is released.

[0039] During working, pinch the brake handle, the brake handle pulls the wedge block 42 to move upward through the brake wire, at this time the spring corresponding to the wedge block 42 stretches (depending on the position and setting mode of the spring, it may also show contraction), the wedge block 42 is driven to move upward along the first vertical rod 11 (the second vertical rod 15), the wedge block 42 drives the limiting block 41 to move horizontally and approach the leg 3, and locks the leg 3 by squeezing it. During this process, the above-mentioned second spring 43 is pulled by the limiting block 41 and elongates, and when the brake handle is released, the wedge block 42 is reset (moves downward) under the drive of the spring, and at the same time, the second spring 43 pulls the limiting block 41 away from the leg 3 to reset it, so as to release the lock on the leg 3; preferably, the limiting blocks 41 are symmetrically arranged on both sides of the leg 3, that is, a set of legs 3 corresponds to two sets of limiting blocks 41. Similarly, the wedge blocks 42 and the limiting blocks 41 are arranged in one-to-one correspondence and distributed on both sides of the lower ends of the first vertical rod 11 (the second vertical rod 15). In addition, limiting teeth are convexly arranged on the surfaces of the limiting blocks 41, and tooth grooves are equidistantly distributed along the length direction of the leg 3 at positions corresponding to the limiting blocks 41. In this way, the locking effect on the leg 3 can be further improved, so as to ensure that when the user holds the bracket 1 and walks, the force on the bracket 1 will not cause the leg 3 to contract into the first vertical rod 11 or the second vertical rod 15.

[0040] Further, the driving part 5 includes sliding rings 51 sleeved on the first vertical rod 11 and the second vertical rod 15, the two sliding rings 51 on the first vertical rod 11 and the second vertical rod 15 of the same bracket 1 are connected by an adjusting rod 52, third springs 53 for maintaining the positions of the corresponding sliding rings 51 are sleeved on the first vertical rod 11 and the second vertical rod 15, and the wedge block 42 is connected with the corresponding sliding ring 51 through a connecting rod 421.

[0041] Specifically, in the above embodiments, the pulling of the wedge block 42 is achieved through the cooperation of the brake handle and the brake cable. The difference between this embodiment and the above embodiments is that the driving part 5 includes a sliding ring 51 and an adjusting rod 52. Two sets of sliding rings 51 are provided for each driving part 5. The two sliding rings 51 are respectively sleeved on the lower parts of the first vertical rod 11 and the second vertical rod 15. And the two sliding rings 51 are respectively connected to their corresponding wedge blocks 42 through connecting rods 421. The connecting rods 421 extend into the interiors of the lower ends of the first vertical rod 11 and the second vertical rod 15 and are connected to the corresponding wedge blocks 42 (the diameters of the lower ends of the first vertical rod 11 and the second vertical rod 15 are larger to facilitate the installation of the wedge block 42 and the limiting block 41). The two sliding rings 51 are connected into a whole through the adjusting rod 52. The adjusting rod 52 is in an I shape and includes a lower cross bar 521, a vertical bar 522 and an upper cross bar 523. As Figures 1 to 3 shown, the two ends of the lower cross bar 521 are respectively connected to the corresponding sliding rings 51. The upper cross bar 523 is located directly below the first horizontal rod 12. In addition, third springs 53 are sleeved on both the first vertical rod 11 and the second vertical rod 15. The third springs 53 are used to maintain the relative positions of the sliding rings 51 and the first vertical rod 11 or the second vertical rod 15. Circular rings are formed along the circumferences of the first vertical rod 11 and the second vertical rod 15 at the positions corresponding to the upper ends of the third springs 53. The two ends of the third spring 53 are respectively abutted against the circular ring and the sliding ring 51. When it is necessary to lock the leg 3, the lower cross bar 521 is pulled upward through the upper cross bar 523. The lower cross bar 521 drives the sliding ring 51 to slide upward along the first vertical rod 11 (the second vertical rod 15). During this process, the sliding ring 51 drives its corresponding wedge block 42 to slide upward through the connecting rod 421, so as to achieve the driving of the limiting block 41. With such a setting, while realizing the driving of the wedge block 42, the two sliding rings 51 are connected into a whole through the lower cross bar 521, which also improves the structural strength of the bracket 1, thereby increasing the load-bearing capacity of the bracket 1.

[0042] Furthermore, a guide rod 121 is fixedly connected to the first horizontal rod 12. A guide hole 5221 for cooperating with the guide rod 121 is formed in the adjusting rod 52. The lower end of the guide rod 121 extends into the guide hole 5221.

[0043] Specifically, to further improve the structural strength of the bracket 1 and avoid the deformation of the vertical rod 522 as described above, in this embodiment, a guide rod 121 is fixedly connected to the first horizontal rod 12. The guide rod 121 is vertically arranged and is opposite to the vertical rod 522. A guide hole 5221 is provided at the upper end of the vertical rod 522 of the adjusting rod 52. The length of the guide hole 5221 is greater than or equal to the length of the guide rod 121. One end of the guide rod 121 away from the first horizontal rod 12 extends into the guide hole 5221. With such a setting, the first horizontal rod 12 forms an integral body with the cross bar through the vertical rod 522, further improving the overall structural strength of the bracket 1. And through the cooperation of the guide rod 121 and the guide hole 5221, the whole adjusting rod 52 is guided during the up and down movement, avoiding the deformation of the vertical rod 522 of the adjusting rod 52 due to excessive force.

[0044] Furthermore, a limiting disk 122 is rotatably installed on each of the first horizontal rods 12. The edge position of the limiting disk 122 protrudes, and a notch 1221 for the upper end of the adjusting rod 52 to pass through is provided at the protruding position of the limiting disk 122.

[0045] Specifically, in the above embodiment, during the use of the bracket 1, if the leg 3 is to be kept in a continuously locked state (for use on a flat road surface), the user needs to always hold the upper cross bar 523 of the adjusting rod 52, which is not convenient for use. In this embodiment, a limiting disk 122 is rotatably installed on the first horizontal rod 12. As Figure 1 and Figure 3 shown, a circular protrusion is formed at the edge position of the limiting disk 122 towards the side where the vertical rod 522 is located. A notch 1221 is provided at the lower part of the circular protrusion corresponding to the end of the upper cross bar 523. During the actual operation, when the upper cross bar 523 is pulled up to the inside of the notch 1221, the locking of the leg 3 is achieved. At this time, by rotating the limiting disk 122, changing the orientation of the notch 1221 can block the upper cross bar 523 inside the circular protrusion, thereby keeping the leg 3 in a continuously locked state. Obviously, for the convenience of the user to rotate the limiting disk 122 after holding the upper cross bar 523, the limiting disk 122 is arranged at one end of the first horizontal rod 12 where it is close to the first vertical rod 11.

[0046] In still another embodiment provided by the embodiments of the present invention, the leg 3 is a hollow rod. A support block 6 is slidably installed in the upper part of the leg 3. The wedge block 42 bends towards the leg 3 and extends into the inside of the leg 3 to be connected with the support block 6. A long slot 31 is provided on the leg 3 along its circumferential direction corresponding to the position where the wedge block 42 passes through.

[0047] Specifically, to reduce the weight of the auxiliary mechanism, the outriggers 3 are usually hollow rods. In this way, when the limit blocks 41 squeeze the outriggers 3 to lock them, it is easy to cause deformation of the part of the outriggers 3 clamped by the two limit blocks 41, thereby reducing the subsequent locking effect of the outriggers 3 and affecting the normal telescoping of the outriggers 3. In this embodiment, a support block 6 is slidably installed in the upper part of the outrigger 3, and the wedge block 42 in the above embodiment is bent towards the outrigger 3, as Figure 3 , Figure 5 , Figure 6 and Figure 7 shown. In addition, a long groove 31 is formed in the outrigger 3, and the bent section of the wedge block 42 extends into the interior of the outrigger 3 from the long groove 31 and is connected to the support block 6. With such a setting, when the wedge block 42 is driven to slide axially along the first vertical rod 11 (the second vertical rod 15), it can drive the support block 6 arranged inside the outrigger 3 to slide synchronously, ensuring that the part of the outrigger 3 clamped by the limit block 41 is supported by the support block 6, thereby avoiding deformation of the outrigger 3 due to excessive force. On the other hand, since the bent section of the wedge block 42 extends into the interior of the outrigger 3 from the long groove 31, the outrigger 3 can be prevented from rotating to a certain extent, so as to ensure that the limit teeth on the limit block 41 can always be aligned with the tooth grooves on the outrigger 3.

[0048] In another embodiment provided by the embodiment of the present invention, wheels 32 are installed at the lower ends of the outriggers 3, and a braking assembly 7 is arranged inside the outriggers 3.

[0049] Further, the wheels 32 are rotatably installed at the lower ends of the outriggers 3 through a rotating shaft 321. The braking assembly 7 includes a braking ring 71 sleeved outside the rotating shaft 321. A rubber pad is arranged on the inner wall of the braking ring 71. A pull rod 73 and a fourth spring 72 for maintaining the relative position between the pull rod 73 and the outrigger 3 are arranged inside the outrigger 3. When the fourth spring 72 is in a natural state, the braking ring 71 is separated from the rotating shaft 321.

[0050] Specifically, in the above embodiments, when using this auxiliary mechanism, it is necessary to first move the auxiliary mechanism. After the auxiliary mechanism is stably placed, then hold the auxiliary mechanism and walk forward slowly. Alternating like this can achieve continuous walking. However, at the initial stage of the patient's recovery when the leg strength is weak, it is quite laborious to lift and move the whole auxiliary mechanism, which is not convenient for patients in the initial stage of recovery. In this embodiment, wheels 32 are installed at the lower ends of each leg 3. The wheels 32 are rotatably connected to the lower ends of the legs 3 through horizontally arranged rotating shafts 321. A braking assembly 7 is arranged inside the legs 3. Optionally, the braking assembly 7 includes a braking ring 71 arranged at the lower end of the leg 3. As shown in the figure, the braking ring 71 is sleeved outside the rotating shaft 321, and the hole of the braking ring 71 is U-shaped. An inner wall arc section is provided with a rubber pad. The width of the U-shaped hole on the braking ring 71 is greater than the diameter of the rotating shaft 321 to prevent friction between the rotating shaft 321 and the inner wall of the braking ring 71 when the rotating shaft 321 rotates. A pull rod 73 is arranged inside the leg 3 along its axial direction. The pull rod 73 extends to the upper part of the leg 3. Pulling the pull rod 73 can drive the braking ring 71 to move upward, so that the arc section of the inner wall of the braking ring 71 contacts the rotating shaft 321, thereby achieving the purpose of braking. A fourth spring 72 is arranged inside the leg 3. The fourth spring 72 maintains the relative position between the pull rod 73 and the leg 3 to ensure that after the pull rod 73 is released, the fourth spring 72 can assist the pull rod 73 to reset, so that the braking ring 71 is separated from the pull rod 73;

[0051] Obviously, for the convenience of description, the front leg 3 is installed at the lower end of the first vertical rod 11, and the rear leg 3 is installed at the lower end of the second vertical rod 15. During specific implementation, the wheels 32 corresponding to the front legs 3 can be replaced with universal wheels, so as to facilitate the turning when the user pushes the auxiliary device to move. Correspondingly, there is no need to arrange a braking assembly 7 inside the legs 3 where the universal wheels are installed.

[0052] In another embodiment provided by the embodiment of the present invention, the sliding of the wedge block 42 along the first vertical rod 11 or the second vertical rod 15 has a first stroke and a second stroke. In the first stroke, the wedge block 42 drives the limiting block 41 to move towards the leg 3. In the second stroke, while the limiting block 41 holds the leg 3 clamped, the wedge block 42 drives the pull rod 73 to move upward.

[0053] Furthermore, the braking assembly 7 further includes pin shafts 74 symmetrically arranged inside the support block 6. The pin shafts 74 all penetrate through the support block 6 along the radial direction. A square hole 61 for the pull rod 73 to pass through is opened inside the support block 6. One end of each pin shaft 74 extends along the long groove 31 to contact the corresponding limiting block 41. The other ends of the pin shafts 74 all extend into the square hole 61 and are fixedly connected with clamping plates 75. A fifth spring 76 for maintaining the relative position between the pin shafts 74 and the support block 6 is arranged inside the support block 6.

[0054] Specifically, since the extension amount of the lower end of the support leg 3 from the first vertical rod 11 or the second vertical rod 15 is different, it is impossible to brake the wheel 32 by using the cooperation of the brake handle and the brake line; in this embodiment, Figure 5 As shown, the brake assembly 7 also includes a pin shaft 74 arranged in the support block 6, and the pin shaft 74 is arranged to penetrate the support block 6 in the radial direction. A square hole 61 for the pull rod 73 to pass through is opened in the support block 6 along its own axial direction. One end of the pin shaft 74 passes through the long slot 31 and contacts the above-mentioned limit block 41. The other end of the pin shaft 74 extends into the square hole 61 and is fixedly connected with a clamping plate 75. A spike portion is provided on the surface of the clamping plate 75. A fifth spring 76 is provided in the support block 6 to maintain the relative position of the pin shaft 74 and the support block 6. The two ends of the fifth spring 76 are respectively connected to the support block 6 and the clamping plate 75 When the splint 75 contacts the inner wall of the support block 6, the fifth spring 76 is in a natural state, and when the splint 75 is away from the inner wall of the support block 6, the fifth spring 76 is stretched and lengthened; the pull rod 73 extends through the square hole 61 to the upper end of the support leg 3, and the fourth spring 72 is arranged at the upper end of the support leg 3. A disc is formed on the outer side of the upper end of the pull rod 73 along its own circumference, and the disc abuts against the fourth spring 72, so that when the pull rod 73 is pulled upward, it can push the fourth spring 72 to deform, and when the pull rod 73 is released, the fourth spring 72 can assist the pull rod 73 to reset.

[0055] In addition, in this embodiment, the surface of the limit block 41 corresponding to the wedge block 42 includes an inclined section 411 and a vertical section 412, and the inclined section 411 is also the inclined surface of the limit block 41 described in the above embodiment, and the process of the wedge block 42 moving axially upward along the first vertical rod 11 (second vertical rod 15) has a first stroke and a second stroke:

[0056] In the first stroke, the inclined surface of the wedge block 42 pushes the limit block 41 to approach the outer wall of the leg 3. During this process, the limit block 41 pushes the pin 74 to move along its own axial direction toward the central axis of the limit block 41. When the wedge block 42 reaches the end of the first stroke, the limit block 41 locks the leg 3. At the same time, the pin 74 pushes the clamping plate 75 to move to contact the surface of the pull rod 73.

[0057] In the second stroke, the wedge block 42 is driven to continue to move upward. At this time, the inclined surface of the wedge block 42 is completely offset from the inclined section 411 of the limit block 41. At this time, the wedge block 42 corresponds to the vertical section 412 on the limit block 41. The wedge block 42 pushes the limit block 41 to keep in contact with the outer wall of the support leg 3. In the process of the wedge block 42 continuing to move upward and driving the support block 6 to move synchronously, the pull rod 73 clamped by the two clamps 75 moves upward accordingly and pulls the brake ring 71 upward. When the wedge block 42 reaches the end of the second stroke, the brake ring 71 contacts the outer wall of the rotating shaft 321 to brake the rotating shaft 321.

[0058] With such a setting, by dividing the movement of the wedge block 42 into a first stroke and a second stroke, the user can lock the outrigger 3 by pulling the upper cross bar 523, and can brake the wheel 32 when the outrigger 3 is at any extended length; it should be noted that when the wedge block 42 is at the end of the first stroke, the upper cross bar 523 just moves to the inside of the annular protrusion on the limit disk 122, so as to facilitate blocking the upper cross bar 523 by rotating the limit disk 122, so that the wedge block 42 can only slide up and down within the area of the second stroke, braking or releasing the brake while keeping the outrigger 3 locked.

[0059] Only some exemplary embodiments of the present invention have been described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An auxiliary mechanism for lower limb rehabilitation equipment, comprising two parallel brackets, the two brackets are connected by a connecting plate, characterized in that: Both ends of the two brackets are bent downward, and both ends of the two brackets are slidably installed with legs. The brackets are provided with first springs for maintaining the relative positions of the brackets and the legs, and the brackets are provided with locking members that can lock the legs at any position.

2. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 1, characterized in that: The two brackets each include a first vertical rod, a first horizontal rod, an inclined rod, a second horizontal rod and a second vertical rod which are connected in sequence. The length of the first vertical rod is greater than that of the second vertical rod, and the first horizontal rod is higher than the second horizontal rod.

3. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 2, characterized in that: The locking member includes an execution part and a driving part. The execution part includes a limit block arranged corresponding to the support leg. Each limit block is slidably installed on the lower part of the first vertical rod and the second vertical rod respectively. Wedge blocks are slidably installed in the first vertical rod and the second vertical rod. The wedge blocks and the limit blocks constitute an inclined wedge mechanism. When the driving part drives the wedge blocks to slide vertically, the wedge blocks drive the limit blocks to slide horizontally and squeeze the support leg. The first vertical rod and the second vertical rod are both provided with a second spring for pulling the limit blocks to reset.

4. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 3, characterized in that: The driving part includes a sliding ring mounted on the first vertical rod and the second vertical rod. The two sliding rings on the first vertical rod and the second vertical rod of the same bracket are connected by an adjusting rod. The first vertical rod and the second vertical rod are both mounted with a third spring for maintaining the position of the corresponding sliding ring. The wedge block is connected to the corresponding sliding ring through a connecting rod.

5. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 4, characterized in that: A guide rod is fixedly connected to the first horizontal rod, a guide hole matching the guide rod is arranged on the adjusting rod, and the lower end of the guide rod extends into the guide hole.

6. An auxiliary mechanism for lower limb rehabilitation equipment according to claim 4 or 5, characterized in that: A limiting disk is rotatably mounted on each of the first horizontal rods. The edge of the limiting disk is protrudingly arranged, and a notch is provided at the protruding position of the limiting disk for the upper end of the adjusting rod to pass through.

7. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 3, characterized in that: The leg is a hollow rod, a support block is slidably installed in the upper inner part of the leg, the wedge block is bent toward the leg and extends to the inside of the leg to connect with the support block, and a long groove is opened along the circumference of the leg corresponding to the position where the wedge block passes.

8. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 7, characterized in that: Wheels are installed at the lower ends of the legs, and brake components are arranged inside the legs.

9. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 8, characterized in that: The wheel is rotatably installed at the lower end of the leg through a rotating shaft. The brake assembly includes a brake ring mounted on the outside of the rotating shaft. A rubber pad is provided on the inner wall of the brake ring. A pull rod and a fourth spring for maintaining the relative position of the pull rod and the leg are provided in the leg. When the fourth spring is in a natural state, the brake ring is separated from the rotating shaft.

10. The auxiliary mechanism for lower limb rehabilitation equipment according to claim 9, characterized in that: The sliding of the wedge block along the first vertical rod or the second vertical rod has a first stroke and a second stroke. In the first stroke, the wedge block drives the limit block to move toward the leg. In the second stroke, the limit block keeps clamping the leg while the wedge block drives the pull rod to move upward.

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