Hand-free walking stick

Abstract

The utility model relates to a hand-free walking stick which comprises a leg guard device, the leg guard device is at least used for protecting thighs and comprises a leg guard frame, at least one rotating component and at least one elastic component, and the at least one rotating component is rotatably connected to the leg guard frame and can rotate relative to the leg guard frame. The at least one elastic component is installed on the leg guard frame, and the at least one rotating component can drive the elastic component to deform so that the at least one rotating component can rotate relative to the leg guard frame.

Description

Technical Field

[0001] The utility model relates to the field of crutches, in particular to a hands-free crutch. Background Art

[0002] Crutches can be used to assist users in walking, and can be understood as an assistive device for walking. Crutches can also be used in medical rehabilitation, and can be understood as a medical device.

[0003] Crutches can be divided into handheld crutches, underarm crutches, elbow support crutches and hands-free crutches.

[0004] For users or patients who suffer injuries below the knee, such as calf or ankle injuries, where the ankle and / or calf are unable to exert force or walk normally, crutches are often required for walking assistance or rehabilitation. Because hands-free crutches free up the upper limbs, they are becoming increasingly popular with users and patients.

[0005] Existing hands-free crutches typically feature a leg guard with a concave center portion that contacts the user's thigh with an arcuate surface. However, the leg guard is a fixed structure. If a user with thicker thighs comes into contact with the leg guard, the protruding portions on both sides of the leg guard can exert significant pressure on the user's thigh, causing discomfort. Utility Model Content

[0006] The embodiment of the utility model provides a hands-free crutch, which is used to solve the problem that the leg protection device in the prior art cannot be adjusted in width and has an uncomfortable wearing experience.

[0007] To achieve one, part, or all of the above purposes or other purposes, the present invention proposes:

[0008] A hands-free crutch includes a leg guard device, which is used to protect at least the thigh. The leg guard device includes a leg guard frame, at least one rotating component and at least one elastic component. The at least one rotating component is rotatably connected to the leg guard frame so that it can rotate relative to the leg guard frame; the at least one elastic component is installed between the leg guard frame and the at least one rotating component. When the at least one rotating component rotates relative to the leg guard frame, it drives the at least one elastic component to generate elastic deformation.

[0009] Preferably, the elastic component comprises a first elastic portion and a second elastic portion connected to each other;

[0010] The first elastic portion is mounted on the leg guard frame, and at least a portion of the second elastic portion extends out of the leg guard frame and is connected to the rotating component.

[0011] Preferably, the elastic component further includes a third elastic portion mounted on the leg guard frame, the third elastic portion connecting the first elastic portion and the second elastic portion; the third elastic portion is annular or spiral.

[0012] Preferably, the elastic component is a torsion spring.

[0013] Preferably, the leg guard frame is provided with a first mounting groove, a second mounting groove and a third mounting groove which are interconnected, the first elastic part is placed in the first mounting groove, and the third elastic part is placed in the third mounting groove;

[0014] The second installation slot is connected to the side wall of the leg guard frame, so that at least a portion of the second elastic portion passes through the second installation slot and extends to the outside of the leg guard frame.

[0015] Preferably, the leg guard further comprises a limiting column, and the third elastic portion is sleeved on the limiting column;

[0016] The third installation groove is annular and surrounds the limiting column.

[0017] Preferably, the leg guard is provided with a first limiting structure, and the rotating component is provided with a second limiting structure. The first limiting structure and the second limiting structure can move relative to each other and restrict each other to limit the range of rotation of at least one rotating component relative to the leg guard.

[0018] Preferably, one of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block. The limiting block is placed in the limiting groove and can move in the limiting groove.

[0019] Preferably, the leg guard frame includes a frame body and at least one first connecting sleeve connected to a side of the frame body;

[0020] The rotating component comprises a protective part and a second connecting sleeve connected thereto. The first connecting sleeve and the second connecting sleeve can be sleeved with each other and rotated with each other.

[0021] Preferably, the leg guard device further comprises at least one set of control components, which are connected to the rotating component and the leg guard frame to connect the rotating component and the leg guard frame.

[0022] Preferably, the control assembly is detachably connected to the rotating component and the leg guard frame.

[0023] Preferably, the control assembly includes a first control component and a reinforcement component, the reinforcement component is mounted on the leg guard frame, and the first control component can be detachably connected to the reinforcement component through the rotating component.

[0024] Preferably, the leg guard device further comprises at least two adjustment rods, an adjustment rod and a reinforcement member sharing a second reinforcement member mounted on the leg guard frame;

[0025] The adjusting rod, the reinforcing component and the second reinforcing component are detachably connected.

[0026] Preferably, the reinforcing component is provided with a first positioning structure, and the leg guard frame is provided with a second positioning structure, and the first positioning structure and the second positioning structure are connected to define the position at which the reinforcing component is installed on the leg guard frame.

[0027] Preferably, the first control component includes a control part and a connecting part. The connecting part is arranged on one side of the control part. The connecting part is detachably connected to the rotating part and the leg guard frame. An anti-slip structure is provided on the edge of the control part.

[0028] Preferably, the control assembly further comprises an elastic member, which is confined between the first control component and the rotating component, and compresses the elastic member when the first control component is connected to the rotating component and the leg guard.

[0029] Preferably, there are two of each of the at least one elastic component and the at least one rotating component;

[0030] Two elastic components are installed on both sides of the leg guard frame;

[0031] The two rotating parts are rotatably connected to the two sides of the leg guard frame, and the two rotating parts are arranged opposite to each other.

[0032] Preferably, the hands-free crutch further comprises a binding strap, which is fixed to the leg guard device to form a receiving space for receiving the leg together with the leg guard device;

[0033] The binding belt is connected to the rotating component, so that the accommodating space surrounded by the leg guard device and the binding belt can be changed to adapt to thighs of different sizes.

[0034] The implementation of the present invention will have the following beneficial effects:

[0035] After using the aforementioned hands-free crutch, the user can place the leg guard against the front of their thigh, adjust the position of the rotating component so that it rests against the side of the thigh, and then use the additional binding device to bind the thigh to the leg guard. Because the rotating component can rotate relative to the leg guard, the rotating part and the leg guard can jointly clamp the user's thigh, with the elastic component providing clamping force. The contact area between the leg guard and the user's thigh can be adjusted according to the thickness of the user's thigh, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0037] In order to more completely understand the present invention and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0038] Figure 1 This is a first stereoscopic view of a hands-free crutch provided in the first embodiment of the present utility model.

[0039] Figure 2 This is a second stereoscopic view of the hands-free crutch provided by the first embodiment of the utility model.

[0040] Figure 3 This is a schematic structural diagram of a carrying device in a hands-free crutch provided in the first embodiment of the utility model.

[0041] Figure 4 This is a schematic diagram of the connection between the support device and the leg guard device in the hands-free crutch provided by the first embodiment of the utility model.

[0042] Figure 5 This is an exploded view of the leg protection device in the hands-free crutch provided in the first embodiment of the utility model.

[0043] Figure 6 This is a partial structural diagram of the leg protection device in the hands-free crutch provided by the first embodiment of the utility model.

[0044] Figure 7 This is a schematic structural diagram of a leg guard frame in a hands-free crutch provided in a first embodiment of the present utility model.

[0045] Figure 8 This is a schematic structural diagram of a rotating component in a hands-free crutch provided in the first embodiment of the utility model.

[0046] Figure 9 This is a schematic structural diagram of a reinforcement member in a hands-free crutch provided in the first embodiment of the utility model.

[0047] Figure 10 This is a schematic structural diagram of a binding device in a hands-free crutch provided in the first embodiment of the present utility model.

[0048] Figure 11 This is a first exploded view of the first binding structure in the hands-free crutch provided by the first embodiment of the utility model.

[0049] Figure 12 This is a second exploded view of the first binding structure in the hands-free crutch provided in the first embodiment of the utility model.

[0050] Figure 13 This is a first structural schematic diagram of the second binding structure in the hands-free crutch provided by the first embodiment of the utility model.

[0051] Figure 14 This is a second structural schematic diagram of the second binding structure in the hands-free crutch provided by the first embodiment of the utility model.

[0052] Figure 15 This is a schematic diagram of the overall structure of a hands-free crutch provided by the first embodiment of the utility model.

[0053] Figure 16 This is a schematic diagram of the exploded assembly of the overall structure of the hands-free crutch provided in the first embodiment of the utility model.

[0054] Figure 17 The structure diagram of the bottom shell and the soft grounding member in the hands-free crutch provided in the first embodiment of the utility model is as follows: Figure 1 .

[0055] Figure 18 The structure diagram of the bottom shell and the soft grounding member in the hands-free crutch provided in the first embodiment of the utility model is as follows: Figure 2 .

[0056] Figure 19 This is a schematic diagram of the hands-free crutch provided by the first embodiment of the present utility model, with the third buffer section grounded.

[0057] Figure 20 This is a schematic diagram of the hands-free crutch provided by the first embodiment of the present utility model, with the first buffer section grounded.

[0058] Figure 21 The exploded assembly structure of the support foot in the first embodiment of the present invention is shown as follows: Figure 1 .

[0059] Figure 22 The exploded assembly structure of the support foot in the first embodiment of the present invention is shown as follows: Figure 2 .

[0060] Figure 23 This is a schematic diagram of the connection structure between the support legs, the main support rod and the restriction ring in the hands-free crutch provided in the first embodiment of the utility model.

[0061] Figure 24 This is a schematic cross-sectional structural diagram of the support leg, main support rod and restriction ring in the hands-free crutch provided in the first embodiment of the utility model.

[0062] Figure 25 This is a schematic diagram of the top of the bottom shell of the hands-free crutch provided by the first embodiment of the present utility model.

[0063] Figure 26This is a schematic diagram of the connection structure between the main support rod and the mounting rod in the hands-free crutch provided by the first embodiment of the utility model.

[0064] Figure 27 This is a schematic cross-sectional view of the main support rod, the mounting rod and the vibration reduction device in the hands-free crutch provided in the first embodiment of the utility model.

[0065] Figure 28 This is a structural schematic diagram of the locking ring in the hands-free crutch provided by the first embodiment of the utility model.

[0066] Figure 29 The structure diagram of the first embodiment of the present invention provides a hand-free crutch in which the vibration reduction device is installed on the top of the main support rod. Figure 1 .

[0067] Figure 30 The structure diagram of the first embodiment of the present invention provides a hand-free crutch in which the vibration reduction device is installed on the top of the main support rod. Figure 2 .

[0068] Figure 31 This is a schematic diagram of the exploded assembly of the vibration reduction device in the hands-free crutch provided by the first embodiment of the utility model.

[0069] Figure 32 This is a structural diagram of the receiving member and the soft cushion in the hands-free crutch provided in the first embodiment of the present utility model.

[0070] Figure 33 This is a first perspective view of a hands-free crutch provided in a second embodiment of the present invention.

[0071] Figure 34 This is a second stereoscopic view of a hands-free crutch provided in the second embodiment of the present invention.

[0072] Figure 35 This is a three-dimensional diagram of a hands-free crutch provided in a third embodiment of the present utility model.

[0073] Figure 36 This is a first stereoscopic view of a hands-free crutch provided in a fourth embodiment of the present invention.

[0074] Figure 37 This is a second stereoscopic view of a hands-free crutch provided in accordance with the fourth embodiment of the present invention.

[0075] Figure 38 This is a three-dimensional diagram of a hands-free crutch provided in accordance with a fifth embodiment of the present invention.

[0076] Figure 39 This is an exploded view of the leg protection device in the hands-free crutch provided in the fifth embodiment of the present utility model.

[0077] Figure 40 This is a first stereoscopic view of a leg guard frame in a hands-free crutch provided in a fifth embodiment of the present utility model.

[0078] Figure 41 This is a second stereoscopic view of the leg guard frame in the hands-free crutch provided in the fifth embodiment of the present utility model.

[0079] Figure 42 This is a first stereoscopic view of the rotating component in the hands-free crutch provided in the fifth embodiment of the present utility model.

[0080] Figure 43 This is a second stereoscopic view of the rotating component in the hands-free crutch provided in the fifth embodiment of the present utility model.

[0081] Figure 44 This is a three-dimensional diagram of the elastic component in the hands-free crutch provided in the fifth embodiment of the present utility model.

[0082] Figure 45 This is a three-dimensional diagram of a reinforcing component in a hands-free crutch provided in a fifth embodiment of the present invention.

[0083] in:

[0084] 10a, no need for crutches; 11a, accommodation space; 12a, accommodation space;

[0085] 100a, carrying device; 110a, carrying body;

[0086] 200a supporting device; 210a main supporting rod;

[0087] 300a, leg guard device; 310a, leg guard frame; 311a, first connecting sleeve; 3111a, first mounting slot; 3112a, second mounting slot; 3113a, third mounting slot; 3114a, first limiting structure; 3115a, third control hole; 312a, frame; 313a, third connecting sleeve; 3131a, second control hole; 3132a, positioning block; 314a, handle; 31 5a, reinforcing rib; 316a, reinforcing rib; 317a, gap; 318a, limiting column; 319a, through hole; 320a, rotating component; 321a, protective portion; 3211a, inner surface; 3212a, outer surface; 3213a, shaft hole; 322a, second connecting sleeve; 3221a, through hole; 3222a, flange; 323a, fourth mounting groove; 324a, second limiting structure; 32 5a, reinforcing rib; 330a, elastic component; 331a, first elastic portion; 332a, second elastic portion; 333a, third elastic portion; 340a, control assembly; 341a, first control component; 3411a, control portion; 3412a, connecting portion; 3413a, anti-slip structure; 342a, elastic member; 343a, reinforcing component; 3431a, screw hole; 3432a, fourth control hole 3433a, positioning slot; 344a, second control component; 350a, connecting rod; 351a, third connecting hole; 352a, fourth connecting hole; 360a, adjustment rod; 361a, adjustment hole; 362a, first control hole; 370a, adjustment assembly; 380a, stabilizing member; 390a, second leg guard component; 391a, first sleeve connection portion; 392a, second sleeve connection portion; 393a, leg guard portion. 301a, first leg guard component; 302a, cap;

[0088] 400a, binding device; 410a, first binding structure; 420a, second binding structure; 430a, binding belt; 411a, first fixing member; 4111a, shaft hole; 4112a, shaft hole; 4113a, first fixing body; 4114a, first fixing plate; 4115a, first buckling portion; 412a, first fixing frame; 4121a, shaft hole; 4122a, shaft hole; 4123a, first slide groove; 4124a, second slide groove; 4125a, sliding space; 4126a, sliding hole; 413a, first binding member; 4131a, first sliding portion; 4132a, second sliding portion; 4133a, second buckling portion; 4134a, buckling groove; 4135a, avoidance groove; 4136a, third sliding portion; 414a, elastic member ; 415a, first axis; 416a, second axis; 417a, third axis; 421a, second fixing member; 4211a, axis hole; 4212a, axis hole; 4213a, second fixing body; 4214a, second fixing plate; 422a, second binding member; 4221a, axis hole; 4222a, binding groove; 4223a, limiting space; 4224a, binding body; 4225a, first limiting plate; 4226a, second limiting plate; 423a, fourth axis; 424a, elastic member; 425a, fifth axis; 431a, belt body; 432a, fixing body; 4321a, notch; 4322a, axis hole; 433a, rack; 434a, tooth groove; 4201a, binding entrance; 4202a, binding exit; 4203a, binding channel;

[0089] D1, the length direction of the carrier; D2, the width direction of the carrier; D3, the thickness direction of the support foot;

[0090] 11g, mounting bracket; 12g, support legs;

[0091] 111g, main support rod; 112g, limiting ring; 113g, locking bolt; 114g, bearing device; 115g, vibration reduction device; 116g, locking device; 1111g, first limiting notch; 1112g, second slot; 1113g, third limiting notch; 1121g, second limiting notch; 1141g, mounting rod; 1142g, receiving member; 1143g, soft cushion; 1151g, upper mounting member; 1152g, lower mounting member; 1153g, elastic member; 1161g, positioning rod; 1162g, locking ring; 11411g, first end; 11412g, second end; 11413g, positioning hole; 11421g, top surface of receiving member; 11422g, first groove; 1 1431g, top surface of the soft cushion; 11432g, second groove; 11433g, third groove; 11511g, upper abutment plate; 11512g, upper sleeve; 11513g, first buckle; 11514g, guide boss; 11521g, lower abutment plate; 11522g, lower sleeve; 11523g, first slot; 11524g, second buckle; 11525g, guide notch; 11526g, second limiting boss; 11527g, insertion platform; 11621g, annular body; 11622g, flexible locking belt; 11623g, ring mouth; 11624g, third end; 11625g, fourth end; 11626g, fixing slot; 11627g, lock hook; 11628g, hook;

[0092] 121g, bottom shell; 122g, soft grounding member; 1210g, cavity; 1211g, bottom of bottom shell; 1212g, top of bottom shell; 1213g, front section; 1214g, middle section; 1215g, rear section; 1216g, first arc-shaped connecting surface; 1217g, fitting cavity; 1218g, partition plate; 1219g, slot; 1222g, contact surface; 1223g, first buffer section; 1224g, second buffer section; 1225g, third buffer section; 1226g, second arc-shaped connecting surface; 1227g, fitting boss; 1 228g, anti-slip structure; 12281g, anti-slip boss; 12131g, bottom surface of the front section; 12141g, bottom surface of the middle section; 12151g, bottom surface of the rear section; 12171g, opening; 12191g, first limiting boss; 12231g, top surface of the first buffer section; 12232g, bottom surface of the first buffer section; 12241g, top surface of the second buffer section; 12242g, bottom surface of the second buffer section; 12251g, top surface of the third buffer section; 12252g, bottom surface of the third buffer section; S, center portion of the soft grounding member;

[0093] 10b, hands-free crutch; 11b, accommodation space; 100b, carrying device; 200b, supporting device; 300b, leg guard device; 310b, leg guard frame; 360b, adjustment rod; 400b, binding device; 410b, first binding structure; 420b, second binding structure;

[0094] 10c, hands-free crutch; 100c, carrying device; 110c, carrying body; 111c, binding portion; 112c, binding hole; 200c, supporting device; 300c, leg guard device; 360c, adjustment rod; 400c, binding device; 401c, first strap; 402c, second strap; 403c, connecting piece;

[0095] 10d, hand-free crutch; 100d, carrying device; 110d, carrying body; 200d, supporting device; 300d, leg guard device; 400d, binding device;

[0096] 10e, hand-free crutch; 100e, carrying device; 200e, supporting device; 220e, movable component; 221e, pin; 222e, fastening structure; 2221e, fastening ring; 2222e, opening; 2223e, fastening buckle; 2224e, buckling portion; 2225e, rotating portion; 300e, leg guard device; 302e, cover cap; 310e, leg guard frame; 311e, sleeve portion; 3111e , first elastic hole; 3112e, second elastic hole; 3113e, third elastic hole; 3115e, third control hole; 312e, frame; 3121e, first limiting structure; 314e, handle; 316e, reinforcing rib; 319e, through hole; 320e, rotating component; 321e, protective part; 322e, first rotating part; 3221e, rotating hole; 3222e, mounting slot; 3224e, weight reduction slot; 323e, second rotating portion; 3231e, rotating hole; 3232e, fourth mounting slot; 3233e, weight reduction slot; 324e, second limiting structure; 330e, elastic component; 331e, first elastic portion; 332e, second elastic portion; 333e, third elastic portion; 334e, fourth elastic portion; 340e, control assembly; 341e, first control component; 342e, gasket; 343e, reinforcement Components; 3431e, screw hole; 3432e, screw hole; 3433e, positioning groove; 3434e, positioning block; 3435e, ridge; 3436e, first insertion portion; 3437e, second insertion portion; 344e, second control component; 350e, connecting rod; 360e, adjustment rod; 363e, positioning notch; 370e, adjustment assembly; 390e second leg guard component; 400e, binding device. DETAILED DESCRIPTION

[0097] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0098] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present invention. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0099] like Figure 1 and Figure 2 As shown, the hands-free crutch 10a may include a carrying device 100a, a supporting device 200a, and a leg guard device 300a. The supporting device 200a and the leg guard device 300a are both connected to the carrying device 400a.

[0100] The support device 100a has a first surface and a second surface disposed in a back-to-back relationship, i.e., the first surface and the second surface are two opposite surfaces. The first surface can be used to support at least the user's knee. It should be noted that the first surface can also be used to support the user's calf. In this embodiment of the utility model, the first surface can be understood as the support surface of the support device 100a, and the second surface can be understood as the back surface of the support device 100a.

[0101] For example, the leg guard 300a is at least partially located outside the first surface of the carrying device 100a, and the leg guard 300a can at least protect the user's thigh. The support device 200a is at least partially located outside the second surface of the carrying device 100a, and the support device 200a can support the carrying device 100a and the leg guard 300a.

[0102] When the hands-free crutch 10a is in an upright state, the end of the support device 200a away from the carrying device 100a is supported on a support surface such as the ground. At this time, the second surface is located below the first surface, and the leg protection device 300a is located above the support device 200a.

[0103] The leg guard 300a is mounted on the support body 100a. It can protect the knees while resting on the support pad 120a. It can also protect the user's thighs. Specifically, the leg guard 300a includes a leg guard component connected to a connecting rod 350a. Furthermore, the leg guard 300a can be used to secure the user's thighs to the leg guard 300a, facilitating walking.

[0104] Combine Figures 4 to 9 The leg guard device 300a includes a leg guard frame 310a and at least one rotating component 320a. The at least one rotating component 320a is rotatably connected to the leg guard frame 310a and can rotate relative to the leg guard frame 310a. The at least one rotating component 320a can be one, two, or another number. For example, two rotating components 320a are used as an example. The two rotating components 320a are rotatably connected to both sides of the leg guard frame 310a. In other words, the two rotating components 320a are mounted on the leg guard frame 310a and can rotate on the leg guard frame 310a under a first condition. However, the two rotating components 320a are fixed to the leg guard frame 310a under a second condition and cannot rotate. The two rotating components 320a and the leg guard frame 310a can jointly protect the user's thigh. For example, the two rotating components 320a and the leg guard frame 310a are detachably connected to each other to facilitate transportation and storage.

[0105] Illustratively, a portion of the rotating component 320a and a portion of the leg guard frame 310a can be interlocked and rotated relative to each other. For example, the leg guard frame 310a includes a frame 312a and at least one first connecting sleeve 311a connected to a side of the frame 312a. This embodiment of the present invention uses two first connecting sleeves 311a as an example. It can be understood that one first connecting sleeve 311a is located on one side of the frame 312a, and the other first connecting sleeve 311a is located on the other side of the frame 312a. The rotating component 320a includes a protective portion 321a and a second connecting sleeve 322a connected to the protective portion 321a. Illustratively, the first connecting sleeve 311a and the second connecting sleeve 322a are interlocked and rotate relative to each other. This embodiment of the present invention uses the second connecting sleeve 322a interlocked with the first connecting sleeve 311a as an example. It should be understood that the first connecting sleeve 311a can also be interlocked with the second connecting sleeve 322a.

[0106] There is a gap 317a between the first connecting sleeve 311a and the frame 312a, and the gap 317a is located on the side of the leg guard frame 310a away from the supporting device 100a. The gap 317a is not an arc-shaped structure. The gap 317a accommodates a portion of the second connecting sleeve 322a to facilitate the second connecting sleeve 322a to be installed on the first connecting sleeve 311a and to facilitate the second connecting sleeve 322a to rotate on the first connecting sleeve 311a.

[0107] In actual use, the two rotating components 320a and the leg guard 310a are used together to protect the legs, such as thighs, placed on the support pad 120a. Generally, the accommodation space 11a enclosed by the two rotating components 320a and the leg guard 310a is sufficient to accommodate the thighs. The two rotating components 320a can rotate relative to the leg guard 310a. On the one hand, this allows the size of the space enclosed by the two rotating components 320a and the leg guard 310a to be adjusted to accommodate different thighs. On the other hand, the two rotating components 320a can rotate relative to the leg guard 310a, which facilitates the binding of the two rotating components 320a to the thighs using external components such as straps. During the binding process, the two rotating components 320a can be manipulated to rotate to a more comfortable position for the thighs. Therefore, in actual applications, the required rotation range of the rotating component 320a is limited, that is, the rotating component 320a does not need to rotate at an excessively large angle. Therefore, in the embodiment of the utility model, a limiting structure is further provided between the two rotating components 320a and the leg guard frame 310a to limit the rotation range of the two rotating components 320a, thereby limiting the two rotating components 320a to a required rotation range. For example, the rotation range of any rotating component 320a is within the range defined by an acute angle, or the arc of rotation of any rotating component 320a is less than 90 degrees. It is understood that in other cases, it is also feasible not to use an additional limiting structure to limit the rotation range of the two rotating components 320a.

[0108] Illustratively, the leg guard frame 310a is provided with two first limiting structures 3114a, one of which is disposed on a first connecting sleeve 311a, such as a first limiting structure 3114a disposed on a side of the first connecting sleeve 311a facing away from the supporting device 100a. The rotating component 320a is provided with a second limiting structure 324a. The first limiting structure 3114a and the second limiting structure 324a are capable of relative movement and mutually restrict each other, thereby limiting the range of rotation, or arc of rotation, of the two rotating components 320a relative to the leg guard frame 310a.

[0109] Exemplarily, one of the first limiting structure 3114a and the second limiting structure 324a is a limiting groove, and the other is a limiting block. The limiting block is placed in the limiting groove and is able to move within the limiting groove. Exemplarily, the first limiting structure 3114a is the limiting groove 3114a, and the second limiting structure 324a is the limiting block 324a. As the rotating component 320a rotates relative to the leg guard frame 310a, the limiting block 324a moves within the limiting groove 3114a. The walls forming both sides of the limiting groove 3114a abut against the limiting block 324a, thereby restricting the limiting block 324a and achieving a limiting effect on the rotating component 320a. Therefore, the rotation range of the rotating component 320a is determined by the size relationship between the limiting groove 3114a and the limiting block 324a. The size relationship between the limiting groove 3114a and the limiting block 324a can be set according to actual needs and is not limited by the embodiment of the utility model.

[0110] Exemplarily, the limiting groove 3114a is an arc-shaped groove, and the limiting groove 3114a is larger than the limiting block.

[0111] Illustratively, the leg guard device 300a further includes at least one elastic component 330a. The at least one elastic component 330a may be one, two, or another number. Illustratively, the number of the at least one elastic component 330a is the same as the number of the at least one rotating component 320a. Two elastic components 330a are mounted between the leg guard frame 310a and the rotating components, such as one elastic component 330a mounted on one first connecting sleeve 311a. When a rotating component 320a rotates relative to the leg guard frame 310a, it can drive the elastic component 330a to produce elastic deformation. Illustratively, the elastic component 330a may include a compression spring or a torsion spring, preferably a torsion spring.

[0112] Illustratively, each elastic component 330a includes a first elastic portion 331a, a second elastic portion 332a, and a third elastic portion 333a, wherein the third elastic portion 333a connects the first elastic portion 331a and the second elastic portion 332a, such that the three are integrally formed. The first elastic portion 331a and the third elastic portion 333a are mounted on the leg guard frame 310a, while at least a portion of the second elastic portion 332a extends outside the leg guard frame 310a. The second elastic portion 332a is at least partially mounted on the rotating component 320a. Illustratively, a portion of the second elastic portion 332a is located within the leg guard frame 310a, while the other portion is connected to the rotating component 320a.

[0113] Illustratively, the leg guard frame 310a defines a first mounting slot 3111a, a second mounting slot 3112a, and a third mounting slot 3113a that are interconnected. The first mounting slot 3111a, the second mounting slot 3112a, and the third mounting slot 3113a can be located on a side of the first connecting sleeve 311a facing away from the supporting device 100a. The first elastic portion 331a is positioned within the first mounting slot 3111a, and the third elastic portion 333a is positioned within the third mounting slot 3113a. The second mounting slot 3112a connects to a sidewall of the leg guard frame 310a, allowing at least a portion of the second elastic portion 332a to pass through the second mounting slot 3112a and extend outside the leg guard frame 310a. Alternatively, at least a portion of the second elastic portion 332a extends from the second mounting slot 3112a to the outside of the leg guard frame 310a. Exemplarily, a portion of the second elastic portion 332a is located in the second mounting groove 3112a, and another portion extends out of the leg guard frame 310a and is placed on the rotating component 320a.

[0114] Illustratively, the rotating component 320a is provided with a fourth mounting slot 323a for receiving the second elastic portion 332a. In practical applications, the elastic component 330a can be first mounted on the leg guard frame 310a, and then a portion of the second elastic portion 332a can be placed into the fourth mounting slot 323a of the rotating component 320a. As the rotating component 320a rotates relative to the leg guard frame 310a, it at least causes the second elastic portion 332a to deform. In other words, as the rotating component 320a causes at least the second elastic portion 332a to deform, the rotating component 320a rotates relative to the leg guard frame 310a.

[0115] In other optional embodiments, the third elastic portion 333a is annular or spiral, preferably spiral. When the rotating component 320a rotates relative to the leg guard frame 310a, it drives the second elastic portion 332a and the third elastic portion 333a to deform together.

[0116] Illustratively, the third mounting groove 3113a is annular.

[0117] For example, the leg guard 310a includes a limiting column 318a, and the third elastic portion 333a is sleeved on the limiting column 318a. The limiting column 318a can be disposed on a side of the first connecting sleeve 311a away from the supporting device 100a.

[0118] In other optional embodiments, any elastic component 330a includes the first elastic portion 331a and the second elastic portion 332a, but does not include the third elastic portion 333a.

[0119] In other optional embodiments, any elastic component 330a includes the first elastic portion 331a and the third elastic portion 333a, but does not include the second elastic portion 332a.

[0120] The leg guard device 300a further includes at least one set of control components 340a. This embodiment of the present invention uses two sets of control components 340a as an example for illustration. One set of control components 340a is connected to at least one rotating component 320a and the leg guard frame 310a to connect the rotating component 320a and the leg guard frame 310a. Exemplarily, one control component 340a is detachably connected to the rotating component 320a and the leg guard frame 310a.

[0121] Illustratively, a set of control components 340a is detachably connected to at least a rotating component 320a and a first connecting sleeve 311a.

[0122] Illustratively, the control assembly 340a includes a first control component 341a, which is detachably connected to a rotating component 320a and a first connecting sleeve 311a, such as a control assembly 340a can pass through the rotating component 320a and be detachably connected to the first connecting sleeve 311a.

[0123] Illustratively, the first control component 341a includes a control portion 3411a and a connecting portion 3412a. The connecting portion 3412a is disposed on one side of the control portion 3411a. The outer surface of the connecting portion 3412a may be threaded. The connecting portion 3412a may be detachably connected to the rotating component 320a and the first connecting sleeve 311a. Illustratively, the connecting portion 3412a may pass through the rotating component 320a and be detachably connected to the first connecting sleeve 311a. The control portion 3411a may press against the rotating component 320a to achieve connection between the rotating component 320a and the first connecting sleeve 311a.

[0124] For example, the control portion 3411a can be a disc-shaped structure. For example, the edge of the control portion 3411a is provided with an anti-slip structure 3413a to facilitate the user to operate the control portion 3411a by hand. The protective structure 3413a can include a plurality of anti-slip strips spaced apart from each other.

[0125] Exemplarily, the control assembly 340a further includes an elastic member 342a, which is confined between the first control component 341a and the first connecting sleeve 311a. The elastic member 342a is capable of elastic deformation and can switch between a compressed state and an extended state. The elastic member 342a exerts an elastic force in the compressed state. When the first control component 341a is connected to the rotating component 320a and the first connecting sleeve 311a, the elastic member 342a is compressed. Exemplarily, the elastic member 342a is sleeved on the connecting component 3412a, with one end of the elastic member 342a being able to abut against a surface of the control portion 3411a, and the other end of the elastic member 342a being able to abut against a surface of the first connecting sleeve 311a. It should be understood that the elastic member 342a is sleeved on a portion of the connecting component 3412a in both the compressed and extended states.

[0126] Exemplarily, the first condition is understood as the elastic member 342a being in an extended state, the connecting portion 3412a being able to connect the rotating component 320a and the first connecting sleeve 311a, but the control portion 3411a does not press the elastic member 342a, that is, the rotating component 320a and the first connecting sleeve 311a are not pressed, so that the rotating component 320a can rotate relative to the first connecting sleeve 311a.

[0127] Exemplarily, the second condition is understood as the elastic member 342a being in a compressed state, the connecting portion 3412a connecting the rotating component 320a and the first connecting sleeve 311a, and the control portion 3411a pressing the elastic member 342a, that is, pressing the rotating component 320a and the first connecting sleeve 311a, so that the rotating component 320a and the first connecting sleeve 311a are fastened together.

[0128] It should be noted that the first condition and the second condition are not limited to these. For example, the first control component 340a may be used to compress the rotating component 320a and the first connecting sleeve 311a, or to loosen the rotating component 320a and the first connecting sleeve 311a to facilitate rotation of the rotating component 320a relative to the first connecting sleeve 311a. Other structures may also be used to achieve compression of the rotating component 320a and the first connecting sleeve 311a, or loosen the compression of the rotating component 320a and the first connecting sleeve 311a.

[0129] Exemplarily, the rotating component 320a has a through-hole 3221a through which the connecting portion 3412a passes. The through-hole 3221a is located at one end of the second connecting sleeve 322a. The rotating component 320a has a groove 3223a connected to the through-hole 3221a. The groove 3223a can accommodate one end of the elastic member 342a, so that when the elastic member 342a is compressed, the distance between the control portion 3411a and the second connecting sleeve 322a is not too large. At the same time, the groove 3223a can also serve as a position limiter for the elastic member 342a. Exemplarily, the rotating component 320a also includes a flange 3222a. The flange 3222a is arranged around the through-hole 3221a, and the positions of the flange 3222a and the groove 3223a correspond to each other, so as to increase the strength of the rotating component 320a in bearing the compressive force of the elastic member 342a.

[0130] Illustratively, the leg guard frame 310a has a through hole 319a for the connecting portion 3412a to pass through. Illustratively, the through hole 319a passes through the limiting column 318a.

[0131] For example, the wall forming through-hole 3221a may be provided with threads, the wall forming through-hole 319a may be provided with threads, and the connecting portion 3412a may be threadedly connected to the first connecting sleeve 311a and the second connecting sleeve 322a. For example, the wall forming through-hole 319a may be provided with threads, and the connecting portion 3412a may be threadedly connected to the first connecting sleeve 311a. For example, the connecting portion 3412a may directly pass through through-hole 3221a and through-hole 319a to be detachably connected to other structural components.

[0132] Illustratively, the control assembly 340a further includes a reinforcement member 343a, which is mounted on the first connecting sleeve 311a. The first control member 341a can be removably connected to the reinforcement member 343a through the rotating member 320a. Illustratively, the reinforcement member 343a is provided with a screw hole 3431a, and the connecting portion 3412a can be mounted in the screw hole 3431a. The connecting portion 3412a and the reinforcement member 343a are threadedly connected. Illustratively, the screw hole 3431a is provided at one end of the reinforcement member 343a.

[0133] Exemplarily, to reduce the weight of the first mounting sleeve 311a, the leg guard 310a further includes two third mounting sleeves 313a. The third mounting sleeves 313a are disposed within the first mounting sleeve 311a, or in other words, the first mounting sleeve 311a is disposed around the third mounting sleeve 311a. To increase stability between the first and third mounting sleeves 311a, a plurality of reinforcing ribs 315a are connected between the first and third mounting sleeves 311a. Exemplarily, the plurality of reinforcing ribs 315a are spaced and evenly distributed between the first and third mounting sleeves 311a.

[0134] Illustratively, the reinforcing component 343a is installed in the third connecting sleeve 313a.

[0135] Illustratively, the reinforcement member 343a connects the first mounting sleeve 311a and the third mounting sleeve 311a.

[0136] The leg guard frame 310a of the present invention can be connected to the carrying device 100a through two connecting rods 350a. For example, the leg guard frame 310a is connected to the two connecting rods 350a.

[0137] To ensure that the leg guard device 300a is suitable for different users and provides better protection, the leg guard device 300a of the present invention further includes two adjustment rods 360a and two connecting rods 350a that are movably connected to adjust the relative distance between the leg guard frame 310a and the supporting device 100a. One adjustment rod 360a and one connecting rod 350a are movably connected.

[0138] Exemplarily, the two adjusting rods 360a are hollow, which not only reduces weight, but also allows one adjusting rod 360a and one connecting rod 350a to be connected to each other. For example, the connecting rod 350a is connected to the adjusting rod 360a, or a portion of the adjusting rod 360a can be inserted into the connecting rod 350a. It is understandable that the adjusting rod 360a is connected to the connecting rod 350a. After the connecting rod 350a and the adjusting rod 360a are connected to each other, one or more adjusting assemblies 370a can be used to connect one adjusting rod 360a and one connecting rod 350a. One or more adjusting assemblies 370a can separate one adjusting rod 360a and one connecting rod 350a to achieve the separation of the connecting rod 350a and the adjusting rod 360a. It is understandable that in the embodiment of the utility model, there are at least two adjusting assemblies 370a, and at least two adjusting assemblies 370a can connect two adjusting rods 360a and two connecting rods 350a.

[0139] Any adjusting rod 360a or any connecting rod 350a is provided with multiple adjustment holes. Exemplarily, any adjusting rod 360a is provided with multiple adjustment holes 361a, which are arranged in rows along the axis of the adjusting rod 360a, forming a row of adjustment holes 361a. Any connecting rod 350a is provided with one or two fourth connecting holes 352a. When an adjusting rod 360a is inserted into a connecting rod 350a, any fourth connecting hole 352a can communicate with and correspond to any adjusting hole 361a. The adjustment assembly 370a can be at least partially mounted on one adjustment hole 361a and one fourth connecting hole 352a to connect the adjusting rod 360a and the connecting rod 350a.

[0140] For example, the adjustment component 370a can refer to the movable component 220a, and will not be described in detail here. For example, the pin 221a of the adjustment component 370a can be installed in the fourth connecting hole 352a and the adjustment hole 361a. The fastening structure 222a of the adjustment component 370a can be sleeved on the connecting rod 350a.

[0141] To enhance the connection stability between the adjustment rod 360a and the connecting rod 350a, the leg guard device 300a of the present invention further includes a stabilizing member 380a. The stabilizing member 380a may be referred to as the stabilizing member 230a and will not be described in detail here. The stabilizing member 380a is inserted into the adjustment rod 360a and the connecting rod 350a to enhance the connection stability between the adjustment rod 360a and the connecting rod 350a.

[0142] Exemplarily, the leg guard device 300a may further include two caps 302a, one cap 302a being mounted on an end of a connecting rod 350a away from the supporting device 100a. The cap 302a has a through hole, and the through hole of the cap 302a is for an adjustment rod 360a to pass through. Exemplarily, the cap 302a and the connecting rod 350a are detachably connected, and can be mounted on the connecting rod 350a or removed from the connecting rod 350a. In other embodiments, the cap 302a and the connecting rod 350a are fixedly connected, and the cap 302a can be connected to the connecting rod 350a via an adhesive layer, or the cap 302a and the connecting rod 350a can be welded and fixed, or the cap 302a and the connecting rod 350a are integrally provided. Exemplarily, the hardness of the adjusting rod 360a and the connecting rod 350a is greater than the hardness of the cap 302a, for example, the adjusting rod 360a and the connecting rod 350a are made of metal, and the cap 302a is made of plastic.

[0143] Exemplarily, the cap 302 includes a sleeve portion and a blocking portion, wherein the blocking portion and the sleeve portion are fixedly connected, such as being integrally provided. The sleeve portion is sleeved on the connecting rod 350a, and the blocking portion is located outside the end of the connecting rod 350a. In some cases, the blocking portion can abut the end of the connecting rod 350a.

[0144] To streamline the interconnection between the leg guard 310a, the adjustment rod 360a, and the carrier 110a, the present embodiment of the utility model utilizes a control assembly 340a that not only secures the rotating component 320a to the leg guard 310a but also enables the rotating component 320a to rotate on the leg guard 310a. Furthermore, the control assembly 340a also connects the adjustment rod 360a to the leg guard 310a. It should be noted that the connection between the rotating component 320a and the leg guard 310a can be separated from the connection between the leg guard 310a and the adjustment rod 360a. For example, different structures can be used to achieve the connection between the rotating component 320a and the leg guard 310a, as well as the connection between the leg guard 310a and the adjustment rod 360a. For example, the leg guard 310a is directly connected to the two adjustment rods 360a, such as by directly welding the leg guard 310a and the two adjustment rods 360a, or the leg guard 310a and the two adjustment rods 360a are fixed by an adhesive layer. In other embodiments, the leg guard 310a and the two adjustment rods 360a can be fixedly connected by other structural members, such as a plurality of rivets to fix the two adjustment rods 360a to the leg guard 310a. It should be noted that other structures can also adopt the same structural structure as the movable assembly 220a, the mounting assembly 240a, or the connecting assembly 280a. For details, please refer to the movable assembly 220a, the mounting assembly 240a, or the connecting assembly 280a, and will not be repeated here.

[0145] Exemplarily, the two first connecting sleeves 311a are connected to the two adjusting rods 360a. Exemplarily, the control assembly 340a further includes a second control component 344a, which is connected to one adjusting rod 360a and one first mounting sleeve 311a.

[0146] Exemplarily, two third connecting sleeves 313a are connected to two adjusting rods 360a, such as one third connecting sleeve 313a and one adjusting rod 360a can be connected to each other. Exemplarily, one third connecting sleeve 313a can be connected to a portion of an adjusting rod 360a, or a portion of an adjusting rod 360a can be installed in one third connecting sleeve 313a. Exemplarily, one second control component 344a connects one adjusting rod 360a, one first mounting sleeve 311a, and one third mounting sleeve 313a.

[0147] Exemplarily, a first control hole 362a is defined at the end of any adjustment rod 360a away from the connecting rod 350a, and a second control hole 3131a is defined at any third connecting sleeve 313a. The adjustment rod 360a is mounted within the third connecting sleeve 313a, and the first control hole 362a and the second control hole 3131a are in communication. A third control hole 3115a is defined at any first connecting sleeve 311a, and there is no obstacle between the third control hole 3115a and the second control hole 3131a, that is, the third control hole 3115a and the second control hole 3131a can communicate through the space between them.

[0148] The second control component 344a can be installed in the third control hole 3115a, the second control hole 3131a and the first control hole 362a to connect the adjustment rod 360a to the first connecting sleeve 311a and the third connecting sleeve 313a, thereby realizing the connection between the adjustment rod 360a and the leg guard frame 310a.

[0149] Exemplarily, the second control component 344a is detachably connected to the adjustment rod 360a, the first connecting sleeve 311a, and the third connecting sleeve 313a. Exemplarily, the second control component 344a can refer to the movable component 220a, which will not be described in detail here. Exemplarily, the second control component 344a can refer to the installation component 240a or the connecting component 280a, which will not be described in detail here. Exemplarily, the second control component 344a includes a screw. In this embodiment of the utility model, the second control component 344a can be removed from the third control hole 3115a, the second control hole 3131a, and the first control hole 362a, thereby separating the adjustment rod 360a and the leg guard frame 310a.

[0150] In order to increase the connection strength between the adjustment rod 360a and the leg guard frame 310a, a reinforcing member 343a is connected to the adjustment rod 360a. The reinforcing member 343a is connected to the end of the adjustment rod 360a away from the connecting rod 350a. For example, the reinforcing member 343a is at least partially mounted within the adjustment rod 360a, and the screw hole 3431a of the reinforcing member 343a is exposed.

[0151] Illustratively, the second control member 344a is further connected to the reinforcement member 343a. For example, the second control member 344a defines a fourth control hole 3432a, which communicates with the first control hole 362a. The second control member 344a can be mounted on the third control member 3115a, the second control hole 3131a, the first control hole 362a, and the fourth control hole 3432a to adjust the rod 360a and the leg guard 310a. Illustratively, the fourth control hole 3432a can be a screw hole, allowing the second control member 344a to be threadedly connected to the reinforcement member 343a.

[0152] Exemplarily, a portion of the reinforcing member 343a is inserted into the adjustment rod 360a, and a portion of the reinforcing member 343a is located outside the end of the adjustment rod 360a away from the connecting rod 350a. A positioning groove 3433a is defined on the peripheral side of the reinforcing member 343a located outside the adjustment rod 360a. A positioning block 3132a is provided on the inner wall of the third connecting sleeve 313a. The positioning block 3132a can be placed in the positioning groove 3433a to achieve positioning of the reinforcing member 343a and the leg guard 310a, while also increasing the stability of the connection between the leg guard 310a, the reinforcing member 343a, and the adjustment rod 360a.

[0153] Exemplarily, the reinforcing member 343a can also be inserted into the adjusting rod 360a, such as by defining a positioning notch at one end of the adjusting rod 360a away from the connecting rod 350a. The positioning notch is connected to the positioning groove 3433a. The positioning notch is used to avoid the positioning block 3132a so that the positioning block 3132a can be placed in the positioning groove 3433a through the positioning notch. Exemplarily, the shape of the positioning groove 3433a matches the shape of the positioning block 3132a.

[0154] Exemplarily, the leg guard device 300a further includes multiple first leg guard components 301a, such as three first leg guard components 301a, which are disposed on the same surface of the two rotating components 320a and the leg guard frame 310a. Specifically, the two first leg guard components 301a are disposed on one surface of the two rotating components 320a, such as on the inner surface 3211a of the protective portion 321a of the rotating component 320a. Exemplarily, the inner surface 3211a of the protective portion 321a can be a curved surface, such as a concave curved surface. When one first leg guard component 301a is mounted on the inner surface 3211a of one protective portion 321a, it can protect the user's thigh. The concave curved surface facilitates conforming to the user's thigh.

[0155] Exemplarily, the thickness of the protective portion 321a gradually increases from the end away from the second connecting sleeve 322a toward the end connected to the second connecting sleeve 322a, or the thickness of the protective portion 321a gradually decreases from the end connected to the second connecting sleeve 322a toward the end away from the second connecting sleeve 322a, so that the strength of the second connecting sleeve 322a can be maintained to a certain extent, and the closer to the second connecting sleeve 322a, the thicker the thickness, so that the rotating part 320a is not easily damaged during rotation.

[0156] A first leg guard component 301a is disposed on one side of the leg guard frame 310a, such as one first leg guard component 301a disposed on one side of the frame 312a. When the leg is placed on the support pad 120a, the thigh can fit in contact with the three first leg guard components 301a. The first leg guard components 301a are made of a soft material, such as that described in connection with the support pad 120a, and will not be further described here. It is understood that after the three first leg guard components 301a are mounted on the same surface of the two rotating components 320a and the leg guard frame 310a, the three first leg guard components 301a can be curved to increase the area of ​​contact with the thigh and enhance protective performance.

[0157] Exemplarily, a handle 314a is provided on one side of the leg guard frame 310a away from the first leg guard component 301a, and the handle 314a is used for holding by a user. In some cases, the user can hold the handle 314a by hand.

[0158] Illustratively, the leg guard device 300a further includes a second leg guard component 390a. The second leg guard component 390a includes a first sleeve portion 391a, a second sleeve portion 392a, and a leg guard portion 393a. The first sleeve portion 391a, the leg guard portion 392a, and the second sleeve portion 393a are fixedly connected in sequence. The first sleeve portion 391a can be mounted on one connecting rod 350a, and the second sleeve portion 392a can be mounted on the other connecting rod 350a. The leg guard portion 393a is located between the first sleeve portion 391a and the second sleeve portion 392a, or in other words, between the two connecting rods 350a. The leg guard portion 393a is located near the support device 100a. Therefore, when the calf and knee are placed on the support pad 120a, a portion of the knee and a portion of the thigh can contact the leg guard portion 393a, thereby providing protection for the knee and thigh.

[0159] The second leg guard 390a is at least partially made of a soft material. For example, at least the leg guard portion 393a is made of a soft material. For example, the second leg guard portion 390a includes sponge and / or Oxford cloth. The first sleeve portion 391a and the second sleeve portion 392a can both be sewn together using sutures.

[0160] Illustratively, the leg guard 393a has a contact surface and a non-contact surface, wherein the contact surface is more flexible than the non-contact surface. It is understood that the contact surface can contact the user's knee and thigh. In other optional embodiments, both surfaces of the leg guard 393a have the same flexibility.

[0161] For example, a plurality of reinforcing ribs 316a are provided on a side of the leg guard 310a facing away from the first control member 341a. The plurality of reinforcing ribs 316a of the leg guard 310a include at least a plurality of transverse reinforcing ribs and a plurality of longitudinal reinforcing ribs, and the plurality of transverse reinforcing ribs and the plurality of longitudinal reinforcing ribs are arranged in an interlaced manner. Thus, the present embodiment of the utility model can save material and reduce the weight of the leg guard 310a while maintaining sufficient strength.

[0162] Illustratively, the rotating component 320a includes a plurality of reinforcing ribs 325a.

[0163] Illustratively, the protection portion 321 a of the rotating component 320 a is provided with an axial hole 3213 a , and the axial hole 3213 a may penetrate the inner surface 3211 a and the outer surface 3212 a of the protection portion 321 a .

[0164] In other optional embodiments, in order to increase the stability of the two rotating parts connected to the two first connecting sleeves, the two rotating parts and the two first connecting sleeves in the embodiment of the utility model are further limited by two limiting structures to increase the stability of the two rotating parts being limited to the two first connecting sleeves. Exemplarily, a first limiting structure is provided on the side of any first connecting sleeve away from the adjusting rod, and a second limiting structure is provided on the side of any rotating part away from the control panel. The first limiting structure and the second limiting structure can limit each other to achieve the restriction of the two rotating parts and the two second connecting sleeves. Specifically, the first limiting structure includes a plurality of first limiting strips and a plurality of first limiting grooves, and two adjacent first limiting strips are separated by a first limiting groove. The second limiting structure includes a plurality of second limiting strips and a plurality of second limiting grooves, and two adjacent second limiting strips are separated by a second limiting groove. All first limiting strips can be placed in all second limiting grooves, and all second limiting strips can be placed in all first limiting grooves. Therefore, the mutual limitation of the first limiting structure and the second limiting structure in the embodiment of the utility model can limit the rotating part from multiple directions, so that the rotating part can be stably connected to the leg guard frame, preventing the rotating part from loosening or shaking after being connected to the leg guard frame.

[0165] Combine Figures 10 to 14As shown, the hands-free crutch 10a can also include multiple binding devices 400a, at least one binding device 400a is connected to the two rotating parts 320a, and at least one binding device 400a is connected to the carrier 110a. The multiple binding devices 400a in the embodiment of the present invention are explained by taking three binding devices 400a as an example, where one binding device 400a among the three binding devices 400a is connected to the two rotating parts 320a, and two of the three binding devices 400a are connected to the carrier 120a. It should be understood that the present invention does not limit the number of the multiple binding devices 400a. It should be understood that the position where the multiple binding devices 400a of the present invention are connected is not limited, such as at least one binding device 400a among the multiple binding devices 400a is connected to the leg guard frame 310a.

[0166] Exemplarily, at least one of the three binding devices 400a may include a binding strap 430a, a first binding structure 410a, and a second binding structure 420a. The binding strap 430a connects the first binding structure 410a and the second binding structure 420a. Exemplarily, the first binding structure 410a and the second binding structure 420a are installed on both sides of the carrier 110a, and the first binding structure 410a and the second binding structure 420a can define the binding strap 430a on the carrier 100a, so that the binding strap 430a, the first binding structure 410a, the second binding structure 420a and the carrier 100a form an accommodating space 12a. The user's calf can be accommodated in the accommodating space 12a, and the binding strap 430a, the first binding structure 410a, the second binding structure 420a and the carrier 100a jointly bind the thigh, which is convenient for the user to walk with the hands-free crutch 10a.

[0167] For example, the first binding structure 410a and the second binding structure 420a are mounted on the two rotating components 320a. The first binding structure 410a and the second binding structure 420a can define the binding strap 430a on the leg guard 300a, so that the binding strap 430a, the first binding structure 410a, the second binding structure 420a, and the leg guard 300a surround and form a receiving space 11a. The user's thigh can be placed in the receiving space 110a. The binding strap 430a, the first binding structure 410a, the second binding structure 420a, and the leg guard 300a jointly bind the user's thigh, facilitating the user's walking with the hands-free crutch 10a.

[0168] Illustratively, the binding strap 430a is detachably connected to the first binding structure 410a and / or the second binding structure 420a, which facilitates transportation and storage of the hands-free crutch 10a.

[0169] Exemplarily, the binding strap 430a is movably connected to the first binding structure 410a and / or the second binding structure 420a. It can be understood that the connection position of the binding strap 430a and the first binding structure 410a and / or the second binding structure 420a is adjustable to change the position of the binding strap 430a connected to the first binding structure 410a and the second binding structure 420a, thereby changing the range of the accommodating space (11a, 12a) formed by the binding strap 430a, the first binding structure 410a and the second binding structure 420a and the leg guard device 300a or the carrying device 100a.

[0170] Exemplarily, the first binding structure 410a includes a first fixing member 411a, a first fixing frame 412a and a first binding member 413a. The first fixing member 411a is connected to the carrier 110a or the rotating component 320a. Exemplarily, the first fixing member 411a is provided with one or more shaft holes 4111a, such as two shaft holes 4111a. The carrier 110a is provided with multiple shaft holes 119a, and the first binding structure 410a also includes two first shafts 415, which can be installed in the shaft holes 4111a and the shaft holes 119a to install the first fixing member 411a on the carrier 110a. The two first shafts 415 can also be installed in the shaft holes 4111a and the shaft holes 3213a to install the first fixing member 411a on the rotating component 320a.

[0171] The first fixing member 411a includes a first fixing body 4113a and two first fixing plates 4114a disposed at one end of the first fixing body 4113a, with the first fixing plates 4114a spaced apart from each other. Two axial holes 4111a extend through the first fixing body 4113a. The first fixing member 411a and the first fixing bracket 412a are rotatably connected. Exemplarily, the first fixing member 411a further includes two axial holes 4112a disposed in the two first fixing plates 4114a, with one axial hole 4112a disposed in each first fixing plate 4114a, and the two axial holes 4112a are disposed opposite each other. The first fixing bracket 412a includes an axial hole 4121a, which is in communication with the axial hole 4112a. The first binding structure 410a further includes a second shaft 416a installed in the two shaft holes 4112a and the one shaft hole 4121a to connect the first fixing frame 412a and the first fixing member 411a. The first fixing frame 412a can rotate relative to the first fixing member 411a around the second shaft 416a.

[0172] Part of the first fixing frame 412a can be placed between the two first fixing plates 4114a, and the two first fixing plates 4114a can limit the part of the first fixing frame 412a placed between the two first fixing plates 4114a.

[0173] The first fixing frame 412a is connected to the binding strap 430a. Exemplarily, the first fixing frame 412a defines an axis hole 4122a. The binding strap 430a includes a strap body 431a and a fixing body 432a. The fixing body 432a is connected to one end of the strap body 431a, such as being integrally formed. A notch 4321a is defined at the end of the fixing body 432a away from the strap body 431a. The fixing body 432a defines two axis holes 4322a, which communicate with the notch 4321a. The two axis holes 4322a communicate with the axis hole 4122a.

[0174] Exemplarily, the first binding structure 410a further includes a third axis 417a, which is installed within the two axis holes 4322a and the axis hole 4122a to connect the fixed body 432a and the first fixed frame 412a. The first fixed frame 412a can rotate relative to the fixed body 432a around the third axis 417a, or in other words, the fixed body 432a can rotate relative to the first fixed frame 412a around the third axis 417a. Therefore, in this embodiment of the utility model, the fixed body 432a can rotate relative to the first fixed frame 412a around the third axis 417a, and the first fixed frame 412a can rotate relative to the first fixed member 411a around the second axis 416a, thereby changing the distance between the fixed body 432a and the first fixed member 411a. Since the first fixed member 411a is installed on the carrier 110a, the distance between the fixed body 432a and the carrier 110a can be changed.

[0175] The first binding member 413a is mounted on the first fixing frame 412a. Exemplarily, the first binding member 413a can slide on the first fixing frame 412a. Exemplarily, the first fixing frame 412a is provided with a first slide groove 4123a, and the first binding member 413a is provided with a first sliding portion 4131a. The first sliding portion 4131a can be placed in the first slide groove 4123a and can slide in the first slide groove 4123a. In order to increase the sliding stability of the first binding member 413a on the first fixing frame 412a, the first fixing frame 412a is further provided with a second slide groove 4124a. The first binding member 413a is provided with a second sliding portion 4132a. The second sliding portion 4132a can be placed in the second slide groove 4124a and can slide in the second slide groove 4124a.

[0176] Exemplarily, the first fixing frame 412a is provided with a sliding hole 4126a, and the first binding member 413a is provided with a third sliding portion 4136a. The third sliding portion 4136a can be placed in the sliding hole 4126a and can slide in the sliding hole 4126a. Exemplarily, the sliding hole 4126a is connected to the first sliding groove 4123a, and the third sliding portion 4136a is provided on one side of the first sliding portion 4132a.

[0177] The first binding member 413a can be connected to the first fixing member 411a to fix the first fixing frame 412a to the first fixing member 411a. Exemplarily, the first fixing member 411a is provided with a first buckling portion 4115a, and the first binding member 413a is provided with a second buckling portion 4133a, and the first buckling portion 4115a and the second buckling portion 4133a can be buckled together. Exemplarily, the first buckling portion 4115a is a snap-fit ​​structure, and the second buckling portion 4133a includes a buckling groove 4134a. The first buckling portion 4115a can be inserted into the buckling groove 4134a, and the first buckling portion 4115a can abut against the second buckling portion 4133a to realize the connection between the first fixing member 411a and the first binding member 413a. In order to facilitate the buckling of the first buckling portion 4115a and the second buckling portion 4133a, the first binding member 413a is provided with an avoidance groove 4135a connected to the buckling groove 4134a, and the first buckling portion 4115a can be inserted into the buckling groove 4134a from the avoidance groove 4135a.

[0178] The first buckling portion 4115a and the second buckling portion 4133a can also be separated, so that the first fixing frame 412a and the first fixing member 411a are connected via the second shaft 416a.

[0179] To maintain the fastening state between the first fastening portion 4115a and the second fastening portion 4133a, the first binding structure 410a further includes an elastic member 414a. The elastic member 414a is disposed within the first sliding groove 4123a and is capable of abutting against an end of the first sliding portion 4131a proximal to the second sliding portion 4132a. The elastic member 414a is capable of elastic deformation and can switch between an extended state and a compressed state. When the elastic member 414a is in the compressed state, it can generate an elastic force. When the first fastening portion 4115a and the second fastening portion 4133a are fastened together, the elastic member 414a is in the extended state. When the first snap-fitting portion 4115a and the second snap-fitting portion 4133a are separated, the elastic member 414a is in a compressed state, and when no external force acts on the first binding member 413a, the elastic force generated by the elastic member 414a drives the first binding member 413a to move on the first fixing frame 412a so that the first snap-fitting portion 4115a and the second snap-fitting portion 4133a are snapped together.

[0180] Illustratively, the side of the binding belt 430a facing the carrying device 100a or the leg guard device 300a includes a soft material, such as Oxford cloth.

[0181] For example, the first binding structure 410a and the second binding structure 420a may be the same. In other embodiments, the first binding structure 410a and the second binding structure 420a are different.

[0182] Exemplarily, the second binding structure 420a includes a second fixing member 421a and a second binding member 422a, and the second fixing member 421a is connected to the carrier 110a or the rotating component 320a. Exemplarily, the second fixing member 421a is provided with one or more shaft holes 4211a, such as two shaft holes 4211a. The second binding structure 420a also includes two fourth shafts 423a, which can be installed in the shaft holes 4211a and the shaft hole 119a to install the second fixing member 421a on the carrier 110a. The two fourth shafts 423a can also be installed in the shaft holes 4211a and the shaft hole 3213a to install the second fixing member 421a on the rotating component 320a.

[0183] The second fixing member 421a includes a second fixing body 4213a and two second fixing plates 4114a disposed at both ends of the second fixing body 4213a. Two axial holes 4211a extend through the second fixing body 4213a. The second fixing member 421a and the second binding member 422a are rotatably connected. Exemplarily, the second fixing member 421a also includes two axial holes 4212a disposed in the two second fixing plates 4214a, and the two axial holes 4212a are disposed opposite each other. The second binding member 422a includes an axial hole 4221a, which is connected to the two axial holes 4212a. The second binding structure 420a also includes a fifth shaft 425a, which is installed in the axial hole 4221a and the two axial holes 4212a to connect the second fixing member 421a and the second binding member 422a. The second binding member 422a can rotate relative to the second fixing member 421a around the fifth shaft 425a.

[0184] The second fixing member 421a and the second binding member 422a, when connected, define a binding entrance 4201a, a binding exit 4202a, and a binding passage 4203a, which are sequentially connected. The end of the strap 431a of the binding strap 430a, away from the fixing member 432a, can be inserted from the binding entrance 4201a into the binding passage 4203a and the binding exit 4202a. In some cases, the end of the strap 431a away from the fixing member 432a can be extended from the binding exit 4202a.

[0185] The belt body 431a is inserted into the binding channel 4203a, and the second binding structure 420a can limit the movement of the belt body 431a. Exemplarily, the binding belt 430a also includes a plurality of racks 433a, and the plurality of racks 433a are arranged on the side of the belt body 431a away from the carrier 110a or the rotating part 320a. The plurality of racks 433a are arranged at intervals, and two adjacent racks 433a define a tooth groove 434a. The second binding structure 420a includes a binding groove 4222a in which the racks 433a can be placed. Exemplarily, the binding groove 4222a is opened on a side of the second binding member 422a close to the second fixing member 421a, and the binding groove 4222a is connected to the binding channel 4203a. When the belt body 431a is inserted into the binding channel 4203a from the binding entrance 4201a, the racks 433a will be stuck in the binding groove 4222a. In the absence of an additional force driving the second binding member 422a, the second binding member 422a restricts the strap 431a from moving from the binding outlet 4202a toward the binding inlet 4201a. Thus, the second binding structure 320a can restrict the strap 431a to bind the user's thigh or calf.

[0186] Exemplarily, in order to maintain the second binding member 422a in restricting the movement of the belt body 431a from the binding outlet 4202a toward the binding inlet 4201a, the second binding structure 420a further includes an elastic member 424a, which is sleeved on the fifth shaft 425a, and one end of the elastic member 424a abuts against a side of the second binding member 422a close to the second fixing member 421a, and the other end of the elastic member 424a abuts against a side of the second fixing member 421a close to the second binding member 422a. The elastic member 424a is capable of elastic deformation and can switch between an extended state and a compressed state. When the elastic member 424a is in the compressed state, it can generate an elastic force. When the rack 433a is engaged with the binding groove 4222a, the elastic member 424a is in the extended state. When the rack 433a is not inserted into the binding groove 4222a, or when the rack 433a is separated from the binding groove 4222a, the elastic member 424a is in a compressed state, and when no external force acts on the second binding member 422a, the elastic force generated by the elastic member 424a drives the second binding member 422a to move on the second fixing member 421a so that the rack 433a is inserted into the binding groove 4222a.

[0187] Exemplarily, the second binding member 422a includes a binding body 4224a, two first limiting plates 4225a, and two second limiting plates 4226a. The two first limiting plates 4225a and the two second limiting plates 4226a are disposed on a side of the binding body 4224a proximal to the second fixing member 421a. The two first limiting plates 4225a are disposed at opposite ends of the binding body 4224a. One first limiting plate 4225a and one second limiting plate 4226a are positioned adjacent to define a limiting space 4223a. Two elastic members 424a are provided, and one elastic member 424a is confined within the limiting space 4223a.

[0188] In other optional embodiments, one end of the binding belt 430a can be directly mounted on the carrier 110a or the rotating component 320a, and the binding belt 430a can be connected to the second binding structure 420a.

[0189] In other optional embodiments, the first binding structure 410a may also adopt the second binding structure 420a described above.

[0190] like Figures 15 to 32 As shown, the hands-free crutch 10a of this embodiment also includes a mounting frame 11g and a support leg 12g. The mounting frame 11g is worn on the user's leg, and the support leg 12g is used to contact the ground. The support leg 12g includes a bottom shell 121g and a soft grounding member 122g. The bottom shell 121g connects to the mounting frame 11g, while the soft grounding member 122g contacts the ground and provides cushioning.

[0191] Among them, as attached Figure 17 As shown, the top 1212g of the bottom shell 121g is connected to the bottom of the mounting frame 11g, and the bottom 1211g of the bottom shell 121g includes a front section 1213g, a middle section 1214g and a rear section 1215g. The front section 1213g and the rear section 1215g are both far away from the ground, and the middle section 1214g is close to the ground, so that the bottom shell 121g presents an arc shape convex toward the ground.

[0192] The soft grounding member 122g includes a first buffer section 1223g, a second buffer section 1224g and a third buffer section 1225g. The first buffer section 1223g is connected to the front section 1213g, the second buffer section 1224g is connected to the middle section 1214g, and the third buffer section 1225g is connected to the rear section 1215g.

[0193] The soft grounding member 122g is made of soft materials such as rubber and silicone. The thickness of the first buffer section 1223g and the thickness of the third buffer section 1225g are both greater than the thickness of the second buffer section 1224g. Figure 18As shown, the bottom surface 12232g of the first buffer segment 1223g, the bottom surface 12242g of the second buffer segment 1224g, and the bottom surface 12252g of the third buffer segment 1225g jointly form a horizontal contact surface 1222g, which is used to contact the ground.

[0194] When the support leg 12g contacts the ground, the third buffer section 1225g is the first to provide buffering. The third buffer section 1225g is thick and has a long buffering stroke. This is to reduce the height between the center portion S of the soft grounding member 122g and the ground before the soft grounding member 122g hits the ground, that is, to reduce the height at which the soft grounding member 122g hits the ground. This is mainly used to reduce the degree of vibration generated after the support leg 12g contacts the ground. Figure 18 As shown, this is the state when the soft grounding member 122g is about to hit the ground. It can be seen that since the third buffer section 1225g is compressed, the height between the soft grounding member 122g and the ground is shortened, effectively reducing the vibration caused by the hitting.

[0195] When the soft grounding member 122g hits the ground, the first buffer section 1223g, the second buffer section 1224g and the third buffer section 1225g jointly bear the pressure.

[0196] Afterwards, when the support leg 12g is about to leave the ground, the first buffer section 1223g provides a buffer. At this time, the first buffer section 1223g bears the weight of the user, and is compressed to generate elastic potential energy, which generates a forward elastic force on the support leg 12g. Since the first buffer section 1223g is thick enough, it can be used to provide a stronger propulsion force to assist the user to move forward. Figure 20 As shown, the soft grounding member 122g is in a state when it is about to leave the ground.

[0197] From the above process, it can be seen that the hands-free crutch is more in line with the changes in the posture of the human foot when walking, and the user experience is more comfortable.

[0198] Regarding the connection between the bottom shell 121g and the soft grounding member 122g, as shown in the attached Figure 18As shown, in this embodiment, the bottom surface 12131g of the front section 1213g, the bottom surface 12141g of the middle section 1214g, and the bottom surface 12151g of the rear section 1215g are smoothly connected to form a first curved connecting surface 1216g. The top surface 12231g of the first buffer section 1223g, the top surface 12241g of the second buffer section 1224g, and the top surface 12251g of the third buffer section 1225g are smoothly connected to form a second curved connecting surface 1226g. The second curved connecting surface 1226g has the same curvature as the first curved connecting surface 1216g, and the two are in close contact with each other. The bottom shell 121g and the soft grounding member 122g can be connected by gluing, bolting, interlocking, or a combination of multiple connection methods. The first arc-shaped connecting surface and the second arc-shaped connecting surface are both arranged in an arc shape along the user's moving direction to simulate the changing trajectory of the human foot when walking. The user's moving direction is the forward direction when walking using the hands-free crutch.

[0199] Specifically, the first curved connecting surface 1216g is configured in an arc shape to simulate the changing trajectory of a human foot during contact with the ground. The soft grounding member 122g is used to provide soft contact between the bottom shell 121g and the ground, preventing the support foot 12g from generating significant vibrations due to hard contact with the ground, thereby reducing the vibration felt by the user's legs.

[0200] When a user wears this hands-free crutch, the horizontal contact surface 1222g allows for greater stability when standing upright. When walking with this hands-free crutch, a single step is cushioned sequentially by the third buffering segment 1225g, the second buffering segment 1224g, and the first buffering segment 1223g. Furthermore, the hardness of the second buffering segment 1224g is greater than that of the first buffering segment 1223g and the third buffering segment 1225g.

[0201] See attached Figure 21 、 2224. In this embodiment, the bottom shell 121g and the soft grounding member 122g are connected by a chimeric connection and secured by bolts. Specifically, a plurality of chimeric cavities 1217g are provided inside the bottom shell 121g, and the chimeric cavity 1217g has an opening 12171g at the first arcuate connection surface 1216g. The soft grounding member 122g is provided with a plurality of chimeric bosses 1227g on the second arcuate connection surface 1226g. Specifically, the plurality of chimeric bosses 1227g are distributed on the top surface 12231g of the first buffer section 1223g, the top surface 12241g of the second buffer section 1224g, and the top surface 12251g of the third buffer section 1225g. The plurality of chimeric bosses 1227g are correspondingly inserted into the plurality of chimeric cavities 1217g. The engaging boss 1227g is mainly used to bear the tangential force between the bottom shell 121g and the soft grounding piece 122g, to prevent the problem of relative displacement between the soft grounding piece 122g and the bottom shell 121g after the hands-free crutch is used for a long time, that is, to prevent the soft grounding piece 122g from slipping and causing unstable standing.

[0202] Furthermore, under the premise of maintaining sufficient strength of the soft grounding member 122g, in order to save material costs in the production process, in this embodiment, at least one engaging boss 1227g is arranged in an annular shape, and preferably all engaging bosses 1227g are arranged in an annular shape, as shown in the attached figure. Figure 22 As shown, that is, under the premise of maintaining the outer shape of the engaging boss 1227g, the material at the center of the engaging boss 1227g is reduced.

[0203] Regarding the formation of the interlocking cavity 1217g, in this embodiment, the bottom shell 121g is hollow, and a cavity 1210g is provided inside the bottom shell 121g. A plurality of vertically extending partitions 1218g are provided in the cavity 1210g. The plurality of partitions 1218g are cross-distributed within the cavity 1210g, and the plurality of partitions 1218g collectively divide the cavity 1210g to form a plurality of interlocking cavities 1217g. Each interlocking cavity 1217g is designed with an interlocking boss 1227g of a matching shape. When the interlocking boss 1227g is inserted into the corresponding interlocking cavity 1217g, the outer side of the interlocking boss 1227g tightly fits against the inner wall of the corresponding interlocking cavity 1217g.

[0204] Furthermore, an anti-slip structure 1228g is provided on the bottom surface 1222g of the soft grounding member 122g. The anti-slip structure 1228g is specifically composed of a plurality of anti-slip bosses 12281g. The anti-slip structure 1228g is mainly used to increase the roughness of the bottom surface 1222g of the soft grounding member 122g to prevent the soft grounding member 122g from slipping.

[0205] In addition, since the human foot does not extend straight forward when walking, but may be valgus or inverted, that is, the force position of the foot is offset to the left and right. Therefore, in this embodiment, the support foot 12g is offset relative to the mounting frame 11g. Specifically, the mounting frame 11g includes a main support rod 111g, and a slot 1219g is provided at the top 1212g of the bottom shell 121g. The main support rod 111g is inserted into the slot 1219g. The slot 1219g is arranged to the right along the length extension direction of the middle section 1214g, deviating from the center of the bottom shell 121g. As shown in the attached figure, Figure 15 and 22 As shown, the support leg 12g is slightly offset to the left of the state shown in the figure. The user can make the support leg 12g turn 180 degrees according to their own situation, that is, adjust the support leg 12g to offset to the right.

[0206] Furthermore, regarding the connection structure between the main support rod 111g and the support leg 12g, in this embodiment, the main support rod 111g is hollow, and the mounting bracket 11g also includes a restraining ring 112g and a locking bolt 113g. The restraining ring 112g is disposed within the main support rod 111g; the locking bolt 113g penetrates the bottom shell 121g from the outside and enters the slot 1219g, then penetrates the main support rod 111g and finally threads onto the restraining ring 112g, thereby securing the main support rod 111g in the slot 1219g. This arrangement is primarily intended to facilitate the production of the main support rod 111g.

[0207] In order to accurately position the main support rod 111g and the support foot 12g and prevent the support foot 12g from deflecting, in this embodiment, refer to the attached Figures 23 to 25 A first limiting boss 12191g is provided on the inner wall of the slot 1219g and extends toward the center of the slot 1219g. A first limiting notch 1111g is provided at the bottom of the main support rod 111g, and a second limiting notch 1121g is provided at the bottom of the limiting ring 112g. The positions of the first limiting notch 1111g and the second limiting notch 1121g correspond to each other, and the first limiting boss 12191g is arranged to pass through the first limiting notch 1111g and the second limiting notch 1121g in sequence to prevent relative rotation between the main support rod 111g and the supporting foot 12g.

[0208] In this embodiment, the mounting frame 11g includes a main support rod 111g, a bearing device 114g, a vibration damping device 115g, and a locking device 116g. The bearing device 114g is used to support the calf and knee. Specifically, the bearing device 114g includes a mounting rod 1141g and a receiving member 1142g. When in use, the receiving member 1142g supports the user's calf and knee. The mounting rod 1141g is installed below the bearing member 114g by means of threaded connection, plug-in connection, welding, etc., connecting the main support rod 111g and the receiving member 1142g. The mounting rod 1141g is sleeved on the main support rod 111g, and the axis of the mounting rod 1141g coincides with the axis of the main support rod 111g. The user's calf is placed on the receiving member 1142g, with the main support rod 111g replacing the user's calf function, and the supporting foot 12g replacing the user's foot function.

[0209] A vibration damping device 115g is mounted on top of the main support rod 111g, and a locking device 116g is mounted on the mounting rod 1141g and connected to the vibration damping device 115g. In other words, the main support rod 111g and the mounting rod 1141g are connected via the locking device 116g. When the user's weight is applied to the receiving member 1142g, the mounting rod 1141g presses downward relative to the main support rod 111g, compressing the vibration damping device 115g and generating an upward elastic force. During this process, the vibration damping device 115g serves to provide a buffer, reducing the degree of vibration generated by the hands-free crutch upon contact with the ground.

[0210] See attached Figures 26 to 30 Regarding the structural arrangement of the vibration damping device 115g, in this embodiment, the locking device 116g specifically includes a positioning rod 1161g, which is installed through the mounting rod 1141g. The vibration damping device 115g includes an upper mounting member 1151g, a lower mounting member 1152g, and an elastic member 1153g. The upper mounting member 1151g and the lower mounting member 1152g are nested and connected to each other. There is a relative sliding relationship between the upper mounting member 1151g and the lower mounting member 1152g, and the upper mounting member 1151g and the lower mounting member 1152g can move closer to or farther away from each other. The positioning rod 1161g penetrates the upper mounting member 1151g, connecting the upper mounting member 1151g to the mounting rod 1141g. The lower mounting member 1152g is mounted on the main support rod 111g, the elastic member 1153g is located between the upper mounting member 1151g and the lower mounting member 1152g, and the elastic member 1153g connects the upper mounting member 1151g and the lower mounting member 1152g.

[0211] The elastic member 1153g is preferably a compression spring. When the user's weight is applied to the receiving member 1142g, the upper mounting member 1151g will approach the lower mounting member 1152g, causing the compression spring to be compressed and generate elastic force to provide a vibration reduction effect.

[0212] For further information, see the attached Figure 31 Regarding the specific connection structure between the upper mounting member 1151g and the lower mounting member 1152g, in this embodiment, the upper mounting member 1151g includes an upper abutment plate 11511g and an upper sleeve 11512g connected to the bottom surface of the upper abutment plate 11511g, while the lower mounting member 1152g includes a lower abutment plate 11521g and a lower sleeve 11522g connected to the top surface of the lower abutment plate 11521g. The lower sleeve 11522g is sleeved over the upper sleeve 11512g, and the elastic member 1153g is located within the upper sleeve 11512g. The upper end of the elastic member 1153g abuts the upper abutment plate 11511g, and the lower end of the elastic member 1153g abuts the lower abutment plate 11521g. The positioning rod 1161g is set to penetrate the upper support plate 11511g, and the lower support plate 11521g is connected to the main support rod 111g.

[0213] At the same time, a vertically extending guide boss 11514g is provided on the outer side of the upper sleeve 11512g, and a vertically extending guide notch 11525g is provided on the lower sleeve 11522g. The guide boss 11514g slides within the guide notch 11525g. The guide boss 11514g is used to prevent relative rotation between the upper mounting member 1151g and the lower mounting member 1152g. Similarly, a second limiting boss 11526g and an insert 11527g are provided on the lower abutment plate 11521g. A third limiting notch 1113g is provided at the top of the main support rod 111g. The second limiting boss 11526g is located within the third limiting notch 1113g to prevent relative rotation between the lower mounting member 1152g and the main support rod 111g. The lower support plate 11521g is pressed against the top of the main support rod 111g, and the insertion platform 11527g is inserted into the main support rod 111g.

[0214] Furthermore, the upper mounting member 1151g includes a first buckle 11513g, which is connected to the outer side of the upper sleeve 11512g. The lower sleeve 11522g is provided with a vertically extending first slot 11523g, in which the first buckle 11513g is slidable. The first buckle 11513g is used to prevent the upper sleeve 11512g from being separated from the lower sleeve 11522g. In addition, the buckle connection facilitates the installation and removal of the upper sleeve 11512g, facilitating the replacement of damaged components.

[0215] Similarly, lower support plate 11521g rests against the top of main support rod 111g. Lower mounting member 1152g also includes a second clip 11524g connected to the bottom surface of lower support plate 11521g. Second clip 11524g is engaged with a second clip slot 1112g provided on main support rod 111g. Lower mounting member 1152g is also connected to main support rod 111g by a clip-on connection, facilitating removal of vibration damping device 115g from main support rod 111g.

[0216] Of course, in other embodiments, the upper sleeve 11512g may be sleeved on the outside of the lower sleeve 11522g, the guide boss 11514g may be arranged on the lower sleeve 11522g, and the guide notch 11525g may be arranged on the upper sleeve 11512g. Such other embodiments are not shown in the drawings.

[0217] See attached Figure 27 To facilitate installation and fixation of the locking device 116g, in this embodiment, the positioning rod 1161g has a first end 11411g and a second end 11412g that protrude from the mounting rod 1141g. The locking device 116g also includes a locking ring 1162g that is sleeved on the mounting rod 1141g and connects the first end 11411g and the second end 11412g.

[0218] During installation, first connect the vibration damping device 115g to the top of the main support rod 111g, then extend the vibration damping device 115g into the interior of the mounting rod 1141g, use the positioning rod 1161g to penetrate the mounting rod 1141g and the vibration damping device 115g, and then connect the locking ring 1162g from the outside of the mounting rod to the first end 11411g and the second end 11412g to prevent the positioning rod 1161g from accidentally detaching from the mounting rod 1141g and causing the main support rod 111g to fall off.

[0219] See attached Figure 28In this embodiment, the locking ring 1162g includes an annular body 11621g and a flexible locking strip 11622g. The annular body 11621g is open on one side and forms a loop opening 11623g. The annular body 11621g includes a third end 11624g and a fourth end 11625g, which form the loop opening 11623g. A locking hook 11627g is provided on the third end 11624g. The flexible locking strip 11622g is connected to the fourth end 11625g. The flexible locking strip 11622g is provided with a hook 11628g that cooperates with the locking hook 11627g. The hook 11628g can be engaged with or separated from the locking hook 11627g. A fixing groove 11626g is provided on one side of the annular body 11621g opposite the ring opening 11623g. The first end 11411g of the positioning rod 1161g is inserted into the fixing groove 11626g. When the hook 11628g is engaged with the locking hook 11627g, the second end 11412g abuts against the flexible locking band 11622g, thereby preventing the positioning rod 1161g from being separated from the mounting rod 1141g. Furthermore, the flexible locking band 11622g may have a roughened surface to increase friction between it and the positioning rod 1161g. By manually releasing the connection between the hook 11628g and the locking hook 11627g, the positioning rod 1161g can be pulled out, allowing the main support rod 111g to be removed from the mounting rod 1141g.

[0220] To make the hands-free crutch suitable for people of various heights, in this embodiment, a plurality of positioning holes 11413g are formed along the length of the mounting rod 1141g, and the positioning rod 1161g can be inserted into any of the positioning holes 11413g. The positioning hole 11413g to be inserted by the positioning rod 1161g is selected according to the height of the user.

[0221] Because the human knee protrudes to a certain extent, in order to improve the user experience and prevent knee pain after prolonged use, in this embodiment, the top surface 11421g of the receiving member 1142g is configured in a concave arc shape to increase the contact area between the user's entire calf and the receiving member 1142g. A first groove 11422g is provided on the top surface 11421g of the receiving member 1142g at the position corresponding to the knee to increase the contact area between the user's knee and the supporting device 114g, thereby increasing the force-bearing area of ​​the knee and reducing the pressure on the knee.

[0222] For further information, see the attached Figure 32The carrying device 114g also includes a soft cushioning pad 1143g, which is mounted on the receiving member 1142g. The user's knee makes soft contact between the cushioning pad 1143g and the receiving member 1142g, improving comfort. In addition, a second groove 11432g is provided on the top surface 11431g of the soft cushioning pad 1143g at a position corresponding to the first groove 11422g. The top surface 11431g of the soft cushioning pad 1143g also includes a third groove 11433g extending along the length of the soft cushioning pad 1143g. The third groove 11433g is connected to the second groove 11432g and is used to accommodate the shin of the calf, thereby increasing the force-bearing area of ​​the calf at the shin and further improving the comfort of the hand-free crutch.

[0223] like Figure 33 and Figure 34 As shown, the difference between the hands-free crutch 10b and the hands-free crutch 10a is at least that the leg guard 300b of the hands-free crutch 10b does not include the rotating component 320a of the leg guard 300a of the hands-free crutch 10b. For example, the adjustment rod 360b of the leg guard 300b is directly mounted on the leg guard frame 310a of the leg guard 300b.

[0224] Illustratively, one of the binding devices 400b is directly connected to the leg guard frame 310b. Illustratively, the first binding structure 410b and the second binding structure 420b of the binding device 400b are both mounted on the leg guard frame 310b. Illustratively, the first binding structure 410b and the second binding structure 420b are mounted on both sides of the leg guard frame 310b. The binding device 400b and the leg guard frame 310b can directly form a storage space 11b for accommodating the user's thigh.

[0225] The carrying device 100b, supporting device 200b and binding device 400b of the hands-free crutch 10b can all refer to the carrying device 100a, supporting device 200a and binding device 400a of the knee-dragging crutch 10a, and will not be described in detail here.

[0226] like Figure 35 As shown, the difference between the hands-free crutch 10c and the hands-free crutch 10a is at least that the leg guard 300c of the hands-free crutch 10c does not include the rotating component 320a of the leg guard 300a of the hands-free crutch 10a. For example, the adjustment rod 360c of the leg guard 300c is directly mounted on the leg guard frame 310c of the leg guard 300c.

[0227] The difference between the hands-free crutch 10c and the hands-free crutch 10a at least includes: the binding device 400c of the hands-free crutch 10c includes one or more strip-shaped binding straps, which can be installed on the carrier 110c and the adjustment rod 360c of the carrier 100c. Exemplarily, a plurality of binding parts 111c are provided on both sides of the carrier 110c, and the binding parts 111c have binding holes 112c. The binding straps of the binding device 400c can pass through the binding holes 112c and be connected to the binding parts 111c. Exemplarily, the binding straps can be female Velcro layers, and both ends of the binding straps can be connected by male Velcro layers. Exemplarily, the male Velcro layer can be connected to any position of the binding strap.

[0228] For example, there are three binding parts 111c and three binding holes 112c on one side of the carrier 110c. The carrier 110c can be connected to one binding device 400c, two binding devices 400c or three binding devices 400c. The user can choose the number of binding devices 400c and the required binding positions according to actual needs.

[0229] Illustratively, one of the binding devices 400c is connected to the adjustment rod 360c. Illustratively, the binding device 400c includes a first binding strap 401c, a second binding strap 402c, and a connector 403c. The first binding strap 401c is connected to one of the two adjustment rods 360c, and the second binding strap 402c is connected to the other of the two adjustment rods 360c. The first binding strap 401c and the second binding strap 402c can be connected via the connector 403c. Illustratively, one of the first binding strap 401c and the second binding strap 402c can pass through the connector 403c and be connected via Velcro.

[0230] For example, to enhance the comfort of binding device 400c when attached to the thigh and / or calf, at least one of the plurality of binding devices 400c further includes a leg guard through which the binding strap can pass. The leg guard has at least one surface made of a soft material, such as sponge, that is breathable and configured to conform to the thigh and / or calf.

[0231] In other optional embodiments, the first binding structure 410a of the binding device 400a is connected to one end of the binding belt 430a, the second binding structure 420a is connected to the other end of the binding belt 430a, and the first binding structure 410a and the second binding structure 420a are connected to both ends of the binding belt 430a. The binding device 400a may also include an adjustment component for adjusting the binding belt 430a. For example, the binding belt 430a includes two belt bodies, and the two belt bodies are connected by an adjustment component. The adjustment component can adjust the length of the two belt bodies to adapt to the thighs or calves of different users. Or the adjustment component can adjust the size of the accommodation space enclosed by the binding device 400a and the carrying device 100a or the leg guard device 300a.

[0232] like Figure 36 and Figure 37 As shown, the difference between the hands-free crutch 10d and the hands-free crutch 10a includes at least: the binding device 400d of the hands-free crutch 10d is different from the binding device 400a of the hands-free crutch 10a. Exemplarily, the binding device 400d includes a first binding structure 410d, a second binding structure 420d, and a binding strap 430d. The first binding structure 410d and the second binding structure 420d are both detachably connected to the support device 100d or the leg guard device 300d. Exemplarily, the binding device 400d also includes an adjustment component 440d connected to the binding strap 430d. Exemplarily, the adjustment component 440d can be deformed to change the size of the accommodation space enclosed by the binding device 400d and the support device 100d or the leg guard device 300d.

[0233] The supporting device 200d can refer to the supporting device 200a and will not be described in detail here.

[0234] Exemplarily, the first binding structure includes a first binding ring, a first binding buckle, and a first retaining member. The first binding ring is connected to one end of the binding strap. The first binding ring surrounds and forms a first binding space, and the first binding buckle and the first binding block are located within the first binding space. The first retaining member is closer to the binding strap than the first binding buckle. Exemplarily, the first binding ring, the first binding buckle, and the first retaining member are integrally formed.

[0235] Exemplarily, the second binding structure includes a second binding ring, a second binding buckle, and a second retaining member. The second binding ring is connected to the other end of the binding strap. The second binding ring surrounds and forms a second binding space, and the second binding buckle and the second binding block are located within the second binding space. The second retaining member is closer to the binding strap than the second binding buckle. Exemplarily, the second binding ring, the second binding buckle, and the second retaining member are integrally formed.

[0236] Exemplarily, the first binding ring and the second binding ring have the same shape, and the first binding buckle and the second binding buckle have the same shape.

[0237] Exemplarily, there is a first step between the first binding block and the first binding ring, and a second step between the second binding block and the second binding ring, and the shape of the first step and the shape of the second step are the same. The thickness of the first binding buckle is less than the thickness of the first binding buckle at the location where it is connected to the first binding ring, and the thickness of the second binding buckle is less than the thickness of the second binding buckle at the location where it is connected to the second binding ring.

[0238] Exemplarily, the first engaging member and the second engaging member have the same shape. For example, the first engaging member and the second engaging member each include two elastic arms, the two elastic arms having an elastic segment and an arc segment, and the arc segment and the elastic segment are fixedly connected, such as being integrally arranged. The elastic segment is connected to the first binding ring and the second binding ring, and the elastic segment is farther away from the first binding buckle and the second binding buckle than the arc segment. The two elastic arms are spaced apart from each other, and the spacing between the two elastic segments is smaller than the spacing between the two arc segments. The spacing between the two arc segments first gradually increases and then gradually decreases from the end away from the elastic segment toward the elastic segment.

[0239] Exemplarily, the two rotating parts are away from the leg guard pads, and both sides of the carrier are provided with a card block and a card plate. The embodiment of the present invention is described by taking the card block and the card plate on the carrier as an example. The card block is connected to the side of the carrier, and the card block and the card plate are fixedly connected such as being integrally arranged. The card block is located between the card plate and the side of the carrier, and the cross section of the card block is smaller than the cross section of the card plate. A continuous card slot is formed between the card plate and the side of the carrier at least partially around the card block, and one card slot can accommodate the first binding buckle or the second binding buckle, and part of the card plate is placed on the first binding buckle or the second binding buckle to confine the first binding buckle or the second binding buckle to the side of the card plate and the carrier. Exemplarily, the first binding buckle or the second binding buckle has an interference fit with the side of the card plate and the carrier. Wherein, the free ends of the first binding buckle and the second binding buckle are provided with chamfers to facilitate the first binding buckle and the second binding buckle to be snapped into the card slot.

[0240] When the first binding structure is installed on the carrier, the two elastic arms are spaced apart from the clamping plate.

[0241] Exemplarily, the clamping plate is cylindrical. The maximum distance between the two arcuate segments is greater than the diameter of the clamping plate, the minimum distance between the two arcuate segments is less than the diameter of the clamping plate, and the distance between the two elastic segments is greater than the diameter of the clamping plate. Exemplarily, the distance between the openings of the two arcuate segments is greater than the distance between the two arcuate segments.

[0242] The following is an illustrative description using the example of the first binding buckle being installed on the side of the carrier and being removed from the side of the carrier.

[0243] During the installation of the first binding structure, the card plate is first placed between the two elastic segments, and the two arc segments and the first binding buckle are located on the same side of the card plate and the card block. Then the first binding structure is driven so that the first binding buckle moves toward the card block and the card plate until the first binding buckle is snapped into the card slot. In the process of driving the first binding buckle in the first binding structure to move toward the card block and the card plate, the edge of the card plate first abuts against the two arc segments, and then the card plate squeezes the two arc segments to cause the two arc segments and the two elastic segments to deform, so that the card plate breaks away from the restriction of the two arc segments and reaches the position of the first binding buckle. In the process of the first binding buckle being snapped into the card slot, the card plate abuts against the first binding buckle, so that the first binding buckle is installed on the side of the carrier.

[0244] During the disassembly of the first binding structure, the first binding structure is driven so that the two elastic arms move toward the card plate and the card block until the first binding buckle is disengaged from the card slot, and the abutment between the first binding buckle and the card plate is separated, and until the card plate contacts the two arc segments. Then, the first binding structure is driven continuously so that the card plate squeezes the two arc segments, causing the two arc segments and the two elastic segments to deform, and the card plate enters the two elastic segments from the position of the two arc segments. The distance between the two elastic segments is greater than the diameter of the buckle, so that the first binding structure can be disassembled from the side of the carrier, and the first binding structure can be removed at this time.

[0245] In other optional embodiments, the first engaging member and the second engaging member have different shapes. For example, the first engaging member has two elastic arms. For details, please refer to the above content and will not be repeated here. The second engaging member includes at least one elastic arm and a moving arm. For example, the at least one elastic arm is two, and the two elastic arms are connected to the two ends of the moving arm, and the two elastic arms are connected to the second binding ring. The two elastic arms and the moving arm together enclose a moving space. The moving arm is closer to the second binding buckle than the elastic arm.

[0246] During the installation of the second binding structure, the card plate is first placed in the moving space and under the moving arm, and the moving arm and the card plate are in contact. Then the second binding ring is pressed to cause the two elastic arms to produce elastic deformation until the second binding buckle is attached to the side of the carrier. Then the second binding structure is driven to move the second binding buckle toward the card block and the card plate until the second binding buckle is snapped into the card slot. When the second binding buckle is snapped into the card slot, the moving arm and the buckle are separated, the card plate and the moving arm are spaced, and the distance between the card plate and the moving arm is less than a predetermined distance, such as the distance between the card plate and the moving arm is less than the length of the second binding buckle snapped into the card slot, so that the moving arm can limit the second binding buckle from being snapped into the card slot. Exemplarily, the side of the moving arm close to the card plate is an arc-shaped structure, and is adapted to the shape of the card plate.

[0247] During the disassembly of the second binding structure, the moving arm is first driven to move in a direction away from the side of the carrier based on the moving space. For example, the user inserts a finger into the moving space, and the finger grips the moving arm to deform the elastic arm and move the moving arm toward the side of the carrier until the moving arm can be placed on the side of the card away from the carrier. Then, the second binding ring is driven, for example, the moving arm is driven to move in the direction of the second binding buckle, so that the moving arm moves to the surface of the card. Then, the second binding ring is continued to be driven so that the second binding buckle is disengaged from the card slot, and the abutment between the second binding buckle and the card is separated. The second binding structure is disassembled from the side of the carrier.

[0248] It should be noted that in order to increase the stability of the second binding structure installed on the carrier, a blocking block is provided on the side of the carrier in the embodiment of the utility model. The blocking block can be placed in the moving space and is spaced apart from the moving arm.

[0249] One of the three binding devices is connected to the two rotating parts, and the binding device is used to bind the thigh. The other two binding devices of the three binding devices are connected to the carrier, and the two binding devices are at least used to bind the calf. In order to increase the stability of the binding device in binding the thigh and calf. In the embodiment of the utility model, one of the two binding devices connected to the carrier can be bound to the calf, and the other binding device can be bound to the position between the thigh and the calf. Specifically, the two clamping blocks and the two clamping plates are arranged near the front end of the carrier and are adjacent to the two second mounting sleeves. When the first binding structure and the second binding structure are connected to the front end position of the carrier, the first binding structure and the second binding structure are inclined relative to the two second mounting sleeves, so that the binding belt can be bound between the thigh and the calf.

[0250] It should be noted that the binding device bound to the calf is designed to adapt to the needs of different users to bind in different positions. In the embodiment of the utility model, two slide rails are provided on both sides of the carrier, and the sliding direction of the two slide rails is the length direction of the carrier. The hands-free crutch also includes two moving parts, the two moving parts are connected to the two sides of the carrier, and one moving part can slide along one slide rail. Specifically, any one of the moving parts has a slide groove, the slide rail is placed in the slide groove, and the moving part can slide along the slide rail. Any one of the moving parts has a card block and a card plate, and a card slot is provided between the card block and the card plate, wherein the card block, the card plate and the card slot can refer to the above content and will not be repeated here. Exemplarily, the moving part can slide into the slide rail from the rear end of the carrier.

[0251] To facilitate adjustment of the space defined by the binding strap, the binding device of this embodiment of the utility model further includes an adjustment assembly connected to the binding strap to adjust the space defined by the binding strap. Exemplarily, the binding strap includes a first strap body and a second strap body, the first strap body and the second strap body being connected to the adjustment assembly.

[0252] Exemplarily, the adjustment assembly includes a first adjustment component, a second adjustment component, a rotating shaft, and an elastic member. The rotating shaft connects the first and second adjustment components, and at least one of the first and second adjustment components can be rotated by the rotating shaft, allowing the first and second adjustment components to rotate relative to each other. The elastic member includes one or more torsion springs, one end of which is connected to the first adjustment component and the other end of which is connected to the second adjustment component. The torsion springs are sleeved on the rotating shaft.

[0253] The torsion spring has a first state and a second state. The first state of the torsion spring can be understood as the initial state of the torsion spring. In the initial state, the torsion spring drives the end of the first adjustment component away from the rotating shaft and the end of the second adjustment component away from the rotating shaft to approach each other. The second state of the torsion spring can be understood as the state in which the torsion spring is deformed by an external force. Exemplarily, the first belt body and the second belt body are pulled respectively, so that the force acts on the end of the first adjustment component away from the rotating shaft and the end of the second adjustment component away from the rotating shaft, causing the end of the first adjustment component away from the rotating shaft and the end of the second adjustment component away from the rotating shaft to move in a direction away from each other, and at the same time, the force acts on the torsion spring, causing the torsion spring to deform. It can be understood that when the torsion spring is in the second state, the torsion spring has an elastic force due to its deformation, and the elastic force of the torsion spring acts in reverse on the first adjustment component and the second adjustment component, thereby making the binding device more tightly bound.

[0254] It should be noted that the structure of the binding device and the number of the binding devices are not limited to the above examples. For example, there can be four binding devices, one of which can be connected to two adjustment rods to bind the thigh. One of the binding devices is connected to the carrier near the front end of the carrier. For example, the binding device is connected to the carrier and the second mounting sleeve to bind the thigh and calf. The other two binding devices are connected to the carrier and connected between the front and rear ends of the carrier to bind the calf.

[0255] like Figures 38 to 41 As shown, the difference between the hands-free crutch 10e and the hands-free crutch 10a is at least that the leg guard 300e of the hands-free crutch 10e is different from the leg guard 300a of the hands-free crutch 10a. For example, the two rotating components 320e in the leg guard 300e each include at least two rotating parts, and at least two rotating parts are connected to the same end of the leg guard 321e. The at least two rotating parts are rotatably connected to the leg guard frame 310e. In this embodiment of the utility model, the rotating component 320e is rotatably connected to the leg guard frame 310e via at least two rotating parts. Compared to a case where both the rotating component and the leg guard frame are rotatably connected via a single rotating part, this embodiment of the utility model can increase the stability of the connection between the rotating component 320e and the leg guard frame 310a, as well as the stability during rotation.

[0256] The present invention is described in detail with reference to an example in which any rotating component 320e includes a first rotating portion 322e and a second rotating portion 323e. It should be noted that the rotating component 320e may also include other numbers of rotating portions, such as three or four rotating portions, which are not listed here.

[0257] Adjacent rotating parts are spaced apart. Exemplarily, the first rotating part 322e and the second rotating part 323e are connected to the same end of the leg guard part 321e, and are separated by a space 325e. The rotating component 320e also includes a protective portion 321e, with the first and second rotating parts 322e, 323e connected to the same end of the protective portion 321e to form the space 325e. Exemplarily, the thickness of the protective portion 321e gradually increases from the end remote from the first and second rotating parts 322e, 323e toward the ends of the first and second rotating parts 322e, 323e. Exemplarily, the protective portion 321e is provided with a plurality of weight-reducing grooves, with the grooves of the protective portion 321e extending from the first rotating part 322e toward the second rotating part 323e.

[0258] To further reduce the weight of the rotating component 320e, at least one of the first rotating portion 322e and the second rotating portion 323e is also provided with weight-reducing grooves. For example, the first rotating portion 322e has multiple weight-reducing grooves 3224e, and the second rotating portion 323e has multiple weight-reducing grooves 3233e. The notches of the weight-reducing grooves 3224e of the first rotating portion 322e and the notches of the weight-reducing grooves 3233e of the second rotating portion 323e face opposite directions, while the notches of the weight-reducing grooves 3233e of the second rotating portion 323e face the same direction as the notches of the weight-reducing grooves of the protective portion 321e.

[0259] A portion of the leg guard frame 310e is disposed between the first rotating portion 322e and the second rotating portion 323e to separate the two. Exemplarily, the leg guard frame 310e includes a frame body 312e and two sleeve portions 311e connected to opposite sides of the frame body 312e. Each sleeve portion 311e forms a stepped structure with both sides of the frame body 312e.

[0260] The two rotating components 320e are connected to the two sleeve portions 311e, respectively. The first rotating portion 322e and the second rotating portion 323e of a rotating component 320e are connected to the upper and lower surfaces of a sleeve portion 311e. In other words, a sleeve portion 311e is placed in the space 325e. For example, the first rotating portion 322e is located on the side of the sleeve portion 311e away from the supporting device 100e of the hands-free crutch 10e, while the second rotating portion 323e is located on the side of the sleeve portion 311e closer to the supporting device 100e.

[0261] The two rotating parts 320e, the two sleeve parts 311e, and the two adjustment rods 360e of the leg guard 300e are connected by two sets of control assemblies 340e. Exemplarily, the control assembly 340e includes a first control component 341e, a reinforcement component 343e, and a second control component 344e. The reinforcement component 343e can be inserted into the adjustment rod 360e, the sleeve part 311e, the first rotating part 322e, and the second rotating part 323e. The first control component 341e can pass through the first rotating part 322e and connect to the reinforcement component 343e, while the second control component 344e can pass through the sleeve part 311e and the adjustment rod 360 and connect to the reinforcement component 343e. Exemplarily, the first control component 341e and the second control component 344e can both be screws.

[0262] In other optional embodiments, the control component 340e may further include a gasket 342e, which can allow the first control component 341e to pass through. During the tightening process of the first control component 341e and the reinforcement component 343e, a part of the first control component 341e can squeeze the gasket 342e, so that the gasket 342e is close to the first rotating part 322e.

[0263] like Figure 40 and Figure 41 As shown, the sleeve portion 311e includes a third control hole 3115e and a through hole 319e that are communicated with each other.

[0264] like Figure 42 and Figure 43 As shown, the second rotating portion 323e includes a rotating hole 3231e, and the first rotating portion 322e includes a rotating hole 3221e and a mounting groove 3222e that are connected to each other. The mounting groove 3222e is formed on a side of the first rotating portion 322e away from the second rotating portion 323e.

[0265] like Figure 45As shown, the reinforcing member 343e includes a first insert portion 3436e and a second insert portion 3437e. The second insert portion 3437e is disposed on one end surface of the first insert portion 3436e. Exemplarily, the diameter of the second insert portion 3437e is smaller than that of the first insert portion 3436e. The first insert portion 3436e is at least partially inserted into the adjustment rod 360e. The first insert portion 3436e and the portion of the adjustment rod 360e inserted by the first insert portion 3436e are both inserted into the rotation hole 3231e and the through hole 319e. At least a portion of the second insert portion 3437e is inserted into the rotation hole 3221e.

[0266] The reinforcement component 343e also includes a screw hole 3431e and a screw hole 3432e. The screw hole 3431e is provided in the second insertion portion 3431e, or in both the second insertion portion 3437e and the first insertion portion 3436e. The screw hole 3432e is provided in the first insertion portion 3436e. The first control component 341e can be installed in the screw hole 3431e through the rotation hole 3221e. The second control component 344e can be installed in the screw hole 3432e through the third control member 3115e and the first control hole of the adjustment rod 360e. The first control hole of the adjustment rod 360e can be referred to as the first control hole 362a and will not be described in detail here.

[0267] Part of the first control component 341a and the gasket 342e can be placed in the installation groove 3222e.

[0268] In the embodiment of the present utility model, the portion of the reinforcing component 343e inserted into the adjusting rod 360e is wrapped by the second rotating portion 323e and the sleeve portion 311e. In the embodiment of the present utility model, the reinforcing component 343e can also be inserted into the second rotating portion 323e and the sleeve portion 311e.

[0269] To increase the stability of the first insertion portion 3436 when inserted into the adjustment rod 360e, a plurality of spaced-apart protrusions 3435e are provided around the periphery of the first insertion portion 3436e. The thickness of the protrusions 3435e gradually increases from the end of the first insertion portion 3436e away from the second insertion portion 3437e toward the end closer to the second insertion portion 3437e. For example, the plurality of protrusions 3435e are spaced evenly apart.

[0270] Exemplarily, the reinforcing member 343e further includes a positioning block 3434e provided on the periphery of the first inserting portion 3436. Figure 39As shown, one end of the adjustment rod 360e used to connect to the reinforcement component 343e is provided with a positioning notch 363e, and the positioning block 3434e is placed in the positioning notch 363e, thereby achieving positioning between the reinforcement component 343e and the adjustment rod 360e, while also increasing the stability of the connection between the two. Exemplarily, the reinforcement component 343e also includes a positioning groove 3433e provided on the positioning block 3434e. The sleeve portion 311e can be provided with a positioning block, and the positioning block of the sleeve portion 311e can be placed in the positioning groove 3433e, thereby achieving positioning between the reinforcement component 343e, the sleeve portion 311e, and the adjustment rod 360e. The positioning block of the sleeve portion 311e can refer to the positioning block 3132a and will not be repeated here.

[0271] It should be noted that the protruding strips 3435e and the positioning holes 3434e on the reinforcing component 343e of the embodiment of the present invention can be applied to the reinforcing component 343a, and will not be described in detail here.

[0272] Illustratively, at least one of the first rotating portion 322e and the second rotating portion 323e is provided with a second limiting structure 324e, and the frame 312e is provided with two or four first limiting structures 3121e. Illustratively, the first rotating portion 322e is provided with a limiting block 324e, and the frame 312e is provided with two limiting slots 3121e. The limiting blocks 324e and limiting slots 3121e can be described with reference to the leg guard device 300a and are not further described here.

[0273] Illustratively, the first limiting structure 3121e and the elastic component 330e of the leg guard device 300e are respectively disposed on the upper and lower surfaces of a sleeve portion 311e.

[0274] like Figure 41 As shown, the sleeve portion 311e further includes a first mounting groove 3111e, a second mounting groove 3112e and a third mounting groove 3113e that are connected to each other, and the third mounting groove 3113e is connected to the through hole 319e.

[0275] like Figure 42 As shown, the second rotating portion 323e includes a fourth mounting slot 3232e, and the slot opening of the fourth mounting slot 3232e faces the direction of the first rotating portion 322e.

[0276] like Figure 44As shown, the elastic component 330e includes a first elastic portion 331e, a third elastic portion 333e, a fourth elastic portion 334e, and a second elastic portion 332e, which are connected in sequence. The third elastic portion 333e is an elastic ring structure with at least two coils. The first elastic portion 331e, the second elastic portion 332e, and the fourth elastic portion 334e are generally columnar. Exemplarily, the third elastic portion 333e and the fourth elastic portion 334e are generally parallel. The first elastic portion 331e is generally perpendicular to the third elastic portion 333e, the second elastic portion 332e is generally perpendicular to the fourth elastic portion 334e, the first elastic portion 331e is generally parallel to the second elastic portion 332e, and the first elastic portion 331e and the second elastic portion 332e are located on different sides of the third elastic portion 333e.

[0277] The first elastic portion 331e is mounted in the first mounting groove 3111e, the second elastic portion 332e is mounted in the fourth mounting groove 3232e, the third elastic portion 333e is mounted in the third mounting groove 3113e, and the fourth elastic portion 334e is mounted in the second mounting groove 3112e. Exemplarily, the second mounting groove 3112 is larger than the fourth elastic portion 334e, and the fourth elastic portion 334e can move or undergo elastic deformation within the second mounting groove 3112.

[0278] The adjustment assembly 370e, connecting rod 350e, cap 302e, and second leg guard component 390e of the leg guard device 300e can be referenced to the adjustment assembly 370a, connecting rod 350a, cap 302a, and second leg guard component 390a of the leg guard device 300a, and are not described in detail here. The handle 314e of the leg guard frame 310e can be referenced to the handle 314a, and are not described in detail here.

[0279] For example, the leg guard device 300e may further include the stabilizing member 380a in the leg guard device 300a, which will not be described in detail here.

[0280] Exemplarily, the leg guard 310e further includes a plurality of reinforcing ribs 316e, which are arranged in a staggered manner to form a plurality of weight-reducing holes.

[0281] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for the sub-technical features thereof. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A hands-free crutch, characterized in that: The leg guard comprises a leg guard device, which is used to protect at least the thigh, and the leg guard device comprises: a leg guard; At least one rotating component, the at least one rotating component being rotatably connected to the leg guard frame so as to be able to rotate relative to the leg guard frame; and At least one elastic component is installed between the leg guard frame and the at least one rotating component. When the at least one rotating component rotates relative to the leg guard frame, it drives the at least one elastic component to generate elastic deformation.

2. The hands-free crutch according to claim 1, wherein: The elastic component includes a first elastic portion and a second elastic portion connected to each other; The first elastic portion is mounted on the leg guard frame, and at least a portion of the second elastic portion extends out of the leg guard frame and is connected to the rotating component.

3. The hands-free crutch according to claim 2, characterized in that: The elastic component further includes a third elastic portion mounted on the leg guard frame, wherein the third elastic portion connects the first elastic portion and the second elastic portion; The third elastic portion is ring-shaped or spiral-shaped.

4. The hands-free crutch according to claim 3, characterized in that: The elastic component is a torsion spring.

5. The hands-free crutch according to claim 3, characterized in that: The leg guard frame is provided with a first mounting slot, a second mounting slot and a third mounting slot which are interconnected, the first elastic portion is placed in the first mounting slot, and the third elastic portion is placed in the third mounting slot; The second mounting slot is connected to the side wall of the leg guard frame, so that at least a portion of the second elastic portion passes through the second mounting slot and extends to the outside of the leg guard frame.

6. The hands-free crutch according to claim 5, characterized in that: The leg guard frame further includes a limiting column, and the third elastic portion is sleeved on the limiting column; The third mounting groove is annular and surrounds the limiting column.

7. The hands-free crutch according to claim 1, wherein: The leg guard frame is provided with a first limiting structure, and the rotating component is provided with a second limiting structure. The first limiting structure and the second limiting structure can move relative to each other and restrict each other to limit the range of rotation of the at least one rotating component relative to the leg guard frame.

8. The hands-free crutch according to claim 7, characterized in that: One of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block. The limiting block is placed in the limiting groove and can move in the limiting groove.

9. The hands-free crutch according to claim 1, wherein: The leg guard frame includes a frame body and at least one first connecting sleeve connected to a side of the frame body; The rotating component includes a protective portion and a second connecting sleeve connected thereto. The first connecting sleeve and the second connecting sleeve can be sleeved with each other and rotated with each other.

10. The hands-free crutch according to claim 1, wherein: The leg guard device further includes at least one set of control components, which are connected to the rotating component and the leg guard frame to connect the rotating component and the leg guard frame.

11. The hands-free crutch according to claim 10, characterized in that: The control assembly is detachably connected to the rotating component and the leg guard frame.

12. The hands-free crutch according to claim 11, wherein: The control assembly includes a first control component and a reinforcement component. The reinforcement component is installed on the leg guard frame. The first control component can be detachably connected to the reinforcement component through the rotating component.

13. The hands-free crutch according to claim 12, wherein: The leg guard device further comprises at least two adjustment rods, one of the adjustment rods and one of the reinforcement components sharing a second reinforcement component mounted on the leg guard frame; The adjusting rod, the reinforcing component and the second reinforcing component are detachably connected.

14. The hands-free crutch according to claim 12, wherein: The reinforcing component is provided with a first positioning structure, and the leg guard frame is provided with a second positioning structure. The first positioning structure and the second positioning structure are connected to define the position at which the reinforcing component is installed on the leg guard frame.

15. The hands-free crutch according to claim 12, wherein: The first control component includes a control part and a connecting part. The connecting part is arranged on one side of the control part. The connecting part is detachably connected to the rotating part and the leg guard frame. An anti-slip structure is arranged on the edge of the control part.

16. The hands-free crutch according to claim 12, wherein: The control assembly further includes an elastic member, which is confined between the first control component and the rotating component. The first control component compresses the elastic member when the rotating component and the leg guard are connected.

17. The hands-free crutch according to claim 1, wherein: There are two of each of the at least one elastic component and the at least one rotating component; The two elastic components are installed on both sides of the leg guard frame; The two rotating components are rotatably connected to both sides of the leg guard frame, and the two rotating components are arranged opposite to each other.

18. The hands-free crutch according to claim 1, wherein: The hands-free crutch further includes a binding strap, which is fixed to the leg guard device to form a receiving space for receiving the leg together with the leg guard device; The binding belt is connected to the rotating component, so that the accommodating space surrounded by the leg guard device and the binding belt can be changed to accommodate thighs of different sizes.

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