Wheelchair support assembly and folding wheelchair

Abstract

According to the wheelchair support assembly, a pedal and a support body actually adopt a split structure, a pedal supporting rod can be directly detached from the support body when the wheelchair support assembly is folded, a plug assembly structure is arranged at the end of the pedal supporting rod, a slot structure is arranged at the corresponding position of the support body, and when the wheelchair support assembly is folded and stored, the pedal supporting rod can be directly detached from the support body. When the plug assembly is separated from the slot structure, the pedal and the support body are completely separated at the moment, the completely split storage folding mode can ensure that the pedal occupies the storage space as small as possible, in addition, further, the plug is matched with the slot in an inserted mode, and an opening of the slot structure deviates from the ground direction, so that it can be ensured that in the using state, the pedal is not prone to falling off. When the pedal bears pressure, the pedal can be inserted and fixed more firmly under the action of the pressure, the problem of firmness is solved, and the technical problem that the folding performance and the structural firmness of a wheelchair pedal of an existing folding wheelchair cannot be considered at the same time is solved. The utility model further provides a folding wheelchair.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument equipment technical field, specifically, a wheelchair support assembly, further relates to a folding wheelchair. BACKGROUND

[0002] The electric wheelchair is a kind of mechanical equipment on the basis of traditional hand-operated wheelchair equipped with electric drive device, and most electric wheelchairs are mainly composed of wheelchair frame, drive motor, controller and battery etc. Unlike traditional wheelchairs, electric wheelchairs have a special interactive structure, which can realize wheelchair movement operation through manual or other forms of instructions without relying on other external assistance to complete the action alone.

[0003] The wheelchair frame usually includes side frame, bottom support, seat plate support, wheel support and other parts, and the specific support distribution structure is different according to the technical requirements of load bearing requirement, folding storage requirement and other aspects of the wheelchair.

[0004] The folding storage mode of the current folding wheelchair generally has some shortcomings, mainly in the following aspects:

[0005] Although the common folding wheelchair design on the market can effectively reduce the storage volume of the wheelchair, the folding function requirement often causes some other problems. The wheelchair footrest support is usually connected with the wheelchair frame by a rotating shaft structure due to the folding requirement. However, since the wheelchair footrest often needs to assist the user's weight or completely support the user's pedaling force in actual use, the rotating shaft connection method often has the problem of insufficient structural firmness and easy damage due to its mobility, or the rotating connection structure with better fixation has the problem of poor storage performance.

[0006] In summary, the wheelchair footrest of the existing folding wheelchair has the technical problem that folding performance and structural firmness cannot be considered. INVENTION CONTENTS

[0007] The technical problem to be solved by the utility model is that the wheelchair footrest of the existing folding wheelchair has the technical problem that folding performance and structural firmness cannot be considered.

[0008] To solve the above problems, the utility model provides a wheelchair support assembly, which comprises a support body and a pair of footrest support rods connected to the support body, the top of the support body is used for connecting a seat plate and a backrest, the end of each footrest support rod is connected with a pedal, the footrest support rod is provided with a plug assembly at the other end opposite to the pedal, the support body is provided with an open-ended slot structure at the position connected with the footrest support rod, the slot structure is matched with the plug assembly in concave-convex plug-in mode, and the opening of the slot structure faces away from the ground.

[0009] The wheelchair support assembly provided by the utility model adopts a pedal connecting design completely different from the prior art, the pedal and the support assembly actually adopt a split structure, the pedal support rod can be directly pulled off the support body when being folded and stored, the pedal is composed of a pedal support rod and a pedal plate, the pedal support rod is provided with a plug assembly at the end, the support body is provided with a slot structure at the corresponding position, when being folded and stored, the plug assembly is separated from the slot structure, at this time, the pedal plate is completely separated from the support body, the folding and storage in the completely split manner can ensure that the pedal occupies the smallest storage space, in addition, the plug and the slot are connected, and the opening of the slot structure is away from the ground, so that the pedal can be more firmly connected under the pressure in the use state, and the problem of firmness is solved, and the technical problem that the folding performance and the structural firmness of the pedal of the prior art cannot be considered is solved.

[0010] As a preferred scheme, the plug assembly is provided with a first plug and a second plug which are spaced apart by a preset distance at the end of the pedal support rod, the first plug is located at a position between the second plug and the pedal plate, and the slot structure comprises a first slot and a second slot which correspond to the first plug and the second plug in position and shape.

[0011] The design optimizes the structural design of the plug assembly, the structural body comprises two plugs which are spaced apart by a preset distance, through the structure of the multi-plug spacing design, the pedal support rod and the support body can be fixed by connection after the rotation of the angle phase is fixed relative to the support body, and the firmness of the pedal in the use state is effectively improved.

[0012] As a preferred scheme, the first plug has a cylindrical structure with a chamfered end, the first slot is a concave cylindrical slot, and the first plug and the first slot are elastically interference-fitted. The design optimizes the structural design of the first plug of the two plugs, adopts a cylindrical main body structure, and has a chamfered end, the plug and the slot structure ensure easy assembly, and the interference fit between the first plug and the first slot can make the connection more firm, especially when the pedal plate bears pressure, the interference fit can be more firm under the pressure.

[0013] As a preferred scheme, the second plug is in a T-shaped boss structure, the second plug is consistent with the extension direction of the first plug, and the second slot is in a T-shaped groove. On the basis of the first plug structure, the structure of the second plug is optimized, the second plug adopts a T-shaped structure, the structure has good plug-in limiting performance, the fixing of the first plug is supplemented and optimized, the rotation of the pedal after plug-in is prevented, and the firmness of the pedal after fixing is further improved.

[0014] As a preferred scheme, a curved transition surface is arranged on the side edge of the pedal support rod end between the first plug and the second plug, a matching curved surface is arranged on the side edge of the bracket body between the first slot and the second slot, and the curved transition surface and the matching curved surface are surface-fitted to form an integrated structure of the pedal support rod and the bracket body in the state of plug-in fitting of the plug assembly into the slot mechanism. The end surface structure of the pedal plug-in position of the device is optimized, the curved surface structure of the concave-convex fitting can share the load, the firmness of the pedal is improved, and the integrated degree between the pedal and the vehicle frame can be improved by the surface-fitted assembly position structure.

[0015] As a preferred scheme, the bracket body comprises a front wheel frame integrally connected thereto, a front wheel is connected to the bottom end of the front wheel frame, the first slot is located at the top end of the front wheel frame, the front wheel frame is vertically arranged, and the first slot is coaxially arranged with the front wheel frame. The abutting position of the vehicle frame body and the pedal support rod is optimized, the position of the first slot is arranged above the front wheel, the pedal pressure can be directly transmitted to the front wheel downward in a vertical manner, and the load bearing capacity of the vehicle frame is improved.

[0016] As a preferred scheme, the top surface of the pedal support rod is in an arc inclined surface shape, and the top surface of the pedal support rod is smoothly transitioned with the top surface of the bracket body connecting seat plate in the state of plug-in fitting of the plug assembly into the slot mechanism. The outer contour shape of the pedal support rod is optimized, the top shape of the pedal support rod can be smoothly transitioned with the top surface of the bracket body, the streamline appearance of the vehicle frame as a whole is improved, and damage to the user caused by the sharp corner structure can be avoided.

[0017] As a preferred scheme, a hinge boss is arranged at a distance from the top end of the pedal support rod and connected to the pedal, the pedal is provided with a hinge groove matched with the hinge boss, and the hinge boss and the hinge groove are rotationally connected through a pin structure. The connection between the pedal support rod and the pedal is provided, the pedal is rotationally connected by arranging the pin structure between the hinge boss and the hinge groove, and the pedal can be conveniently stored.

[0018] As a preferred scheme, the bottom end of the hinged groove is provided with a bayonet-shaped top support structure, the shape of the top support structure is matched with the end of the foot pedal support rod, and the foot pedal is positioned at an angle perpendicular to the foot pedal support rod through the limiting matching of the top support structure and the end of the foot pedal support rod. The design is based on the above structure, and the bayonet-shaped top support is abutted with the end of the foot pedal support rod, so that the position of the pedal can be locked after the pedal is rotated to be perpendicular to the support rod.

[0019] The utility model also provides a folding wheelchair, including wheelchair support assembly, drive component, wheel component, seat board and chair back, wherein wheelchair support assembly is any one of above-mentioned wheelchair support assembly. Because above-mentioned wheelchair support assembly has above-mentioned beneficial effect, therefore the folding wheelchair with the wheelchair support assembly also should have corresponding beneficial effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the folding wheelchair provided by the utility model;

[0021] Figure 2 It is Figure 1 It is a structure schematic diagram of the foot pedal support rod of the folding wheelchair;

[0022] Figure 3 It is Figure 2 It is a structure schematic diagram of another angle of the foot pedal support rod;

[0023] Figure 4 It is Figure 1 It is a partial structure schematic diagram of one side of the support main body of the folding wheelchair;

[0024] Figure 5 It is Figure 1 It is a pedal structure schematic diagram of the folding wheelchair;

[0025] Among them, Figures 1-5 Among them:

[0026] 1, support main body;1-1, first slot;1-2, second slot;2, foot pedal support rod;2-1, first plug;2-2, second plug;2-3, hinged boss;2-4, curved surface transition surface;3, pedal;3-1, hinged groove;3-2, top support structure;4, front wheel support;5, front wheel;6, seat board;7, chair back. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described in combination with specific implementation manners.

[0028] Before the working principle of the utility model is described in detail, the description of the utility model needs to be further explained: in the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can be directly connected, can be indirectly connected through an intermediate medium, or can be two elements welded connection. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Reference Figures 1-5 The following examples are described as follows, Figure 1 The overall structure schematic diagram of a folding wheelchair provided by the utility model is shown in the figure; Figure 2 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 1 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 3 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 2 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 4 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 1 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 5 The structure schematic diagram of the folding wheelchair is shown in the figure; Figure 1 The structure schematic diagram of the folding wheelchair is shown in the figure.

[0031] The wheelchair support assembly provided in the embodiment comprises a support body 1, a pair of foot support rods 2 connected to the support body 1, and a seat plate 6 and a backrest 7 connected to the top of the support body 1. The end of each foot support rod 2 is connected to a pedal 3, and the foot support rod 2 is provided with a plug assembly at the other end opposite the pedal 3. The support body 1 is provided with a one-end-open slot structure at the position connected to the foot support rod 2, the slot structure and the plug assembly are matched in concave-convex plug-in, and the opening of the slot structure faces away from the ground.

[0032] The wheelchair support assembly provided by the utility model adopts a pedal connecting design completely different from the prior art, the pedal and the support assembly actually adopt a split structure, the pedal support rod 2 can be directly pulled off the support main body 1 when being folded and stored, the pedal is composed of a pedal support rod 2 and a pedal plate 3, the pedal support rod 2 is provided with a plug assembly structure at the end, the support main body 1 is provided with a slot structure at the corresponding position, when being folded and stored, the plug assembly is separated from the slot structure, at this time, the pedal plate 3 is completely separated from the support main body 1, the folding and storing mode of complete separation can ensure that the pedal occupies the smallest storage space as far as possible, in addition, the plug and the slot are matched and connected, and the opening of the slot structure is away from the ground, so that the pedal can be more firmly connected under the pressure in the use state, and the problem of firmness is solved, and the technical problem that the folding performance and the structural firmness of the pedal of the prior art cannot be considered is solved.

[0033] In the technical scheme of the embodiment, the plug assembly is provided with a first plug 2-1 and a second plug 2-2 which are spaced apart by a preset distance at the end of the pedal support rod 2, the first plug 2-1 is located between the second plug 2-2 and the pedal plate 3, and the slot structure comprises a first slot 1-1 and a second slot 1-2 which correspond to the first plug 2-1 and the second plug 2-2 in position and shape.

[0034] The design optimizes the structure design of the plug assembly, the structure main body comprises two plugs which are spaced apart by a preset distance, through the structure of the multi-plug spacing design, the pedal support rod 2 and the support main body 1 can be fixed after being connected, the angle phase is fixed and cannot rotate relative to the support main body 1, and the firmness of the pedal in the use state is effectively improved.

[0035] In the technical scheme of the embodiment, the first plug 2-1 is in a cylindrical structure with a chamfered end, the first slot 1-1 is an inner concave cylindrical slot, and the first plug 2-1 and the first slot 1-1 are in elastic interference fit. The design optimizes the structure design of the first plug 2-1 of the two plugs, adopts a cylindrical main structure, and has a chamfered end at the end, the plug and the slot structure ensure that the connection is easy to perform, and due to the interference fit between the first plug 2-1 and the first slot 1-1, the connection is more firm, especially when the pedal plate 3 is under pressure, the interference fit is more firm under the pressure.

[0036] In the technical scheme of the embodiment, the second plug 2-2 is in a T-shaped boss structure, the extension direction of the second plug 2-2 is consistent with that of the first plug 2-1, and the second slot 1-2 is in a T-shaped groove. On the basis of the structure of the first plug 2-1, the structure of the second plug 2-2 is optimized, the second plug 2-2 adopts a T-shaped structure, the structure has good plug-in limiting performance, the fixing of the first plug 2-1 is supplemented and optimized, the turning of the pedal after plug-in is prevented, and the firmness of the pedal after fixing is further improved.

[0037] In the technical scheme of the embodiment, the side edge of the pedal support rod 2 at the end between the first plug 2-1 and the second plug 2-2 is provided with a curved transition surface 2-4, and the side edge of the bracket body 1 between the first slot 1-1 and the second slot 1-2 is provided with a matching curved surface. In the state of plug-in cooperation of the plug assembly into the slot mechanism, the curved transition surface 2-4 and the matching curved surface are surface-fitted to form an integrated structure of the pedal support rod 2 and the bracket body 1. The design optimizes the end surface structure of the pedal plug-in position of the device, adopts a concave-convex matching curved surface structure, can share the load, improves the firmness of the pedal, and the surface-fitted assembly position structure can improve the integration degree between the pedal and the frame.

[0038] In the technical scheme of the embodiment, the bracket body 1 comprises a front wheel frame 4 integrally connected thereto, the bottom end of the front wheel frame 4 is connected with a front wheel 5, the first slot 1-1 is located at the top end of the front wheel frame 4, the front wheel frame 4 is vertically arranged, and the first slot 1-1 is coaxially arranged with the front wheel frame 4. The design optimizes the setting of the butt joint position of the frame body and the pedal support rod 2, sets the position of the first slot 1-1 directly above the front wheel 5, and can vertically and directly transmit the pressure of the pedal 3 to the front wheel 5 below, thereby enhancing the pressure bearing capacity of the frame.

[0039] In the technical scheme of the embodiment, the top surface of the pedal support rod 2 is in a circular arc inclined surface shape, and in the state of plug-in cooperation of the plug assembly into the slot mechanism, the top surface of the pedal support rod 2 and the top surface of the connecting seat plate 6 of the bracket body 1 are smoothly transitioned. The design optimizes the outer contour shape of the pedal support rod 2, the top shape of the pedal support rod 2 can be smoothly transitioned with the top surface of the bracket body 1, improves the streamline appearance of the frame as a whole, and can avoid the harm of sharp corner structures to users.

[0040] In the technical scheme of the embodiment, the foot support rod 2 is provided with a hinge boss 2-3 at a distance from the top end at the end connected to the pedal 3, the pedal 3 is provided with a hinge groove 3-1 matched with the hinge boss 2-3, and the hinge boss 2-3 and the hinge groove 3-1 are rotationally connected through a pin structure. The design provides a preferred connection design between the foot support rod 2 and the pedal 3. The rotation connection of the pedal 3 is achieved by installing the pin structure between the hinge boss 2-3 and the hinge groove 3-1. This structure facilitates the overall storage of the pedal.

[0041] In the technical scheme of the embodiment, the bottom end of the hinge groove 3-1 is provided with a bayonet-shaped top support structure 3-2, the shape of the top support structure 3-2 is matched with the end of the foot support rod 2, and the limiting cooperation between the top support structure 3-2 and the end of the foot support rod 2 can position the pedal 3 at an angle perpendicular to the foot support rod 2. The design sets the bayonet top support against the end of the foot support rod 2 on the basis of the above structure, which can lock the position of the pedal 3 after the pedal 3 is rotated to be perpendicular to the support rod.

[0042] The utility model also provides a folding wheelchair, including wheelchair support assembly, drive component, wheel assembly, seat board 6 and chair back 7, wherein the wheelchair support assembly is any one of above-mentioned wheelchair support assembly. Since the above-mentioned wheelchair support assembly has the beneficial effect, the folding wheelchair with the wheelchair support assembly should also have the corresponding beneficial effect.

[0043] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A wheelchair support assembly comprising a support body (1) and a pair of foot support bars (2) connected to said support body (1), the top of said support body (1) being adapted to receive a seat (6) and a backrest (7), the end of each of said foot support bars (2) being connected to a footrest (3), characterised in that, The foot pedal support rod (2) is provided with a plug assembly at the other end opposite to the pedal (3), the bracket body (1) is provided with an open-ended slot structure at the position connected with the foot pedal support rod (2), the slot structure is matched with the plug assembly, and the opening of the slot structure faces away from the ground; The plug assembly is provided with a first plug (2-1) and a second plug (2-2) at a preset distance apart from each other at the end of the foot pedal support rod (2), the first plug (2-1) is located between the second plug (2-2) and the pedal (3), and the slot structure comprises a first slot (1-1) and a second slot (1-2) corresponding to the first plug (2-1) and the second plug (2-2) in position and shape; The first plug (2-1) is in a cylindrical structure with a chamfered end, the first slot (1-1) is a concave cylindrical slot, and the first plug (2-1) is in elastic interference fit with the first slot (1-1); The foot pedal support rod (2) is provided with a hinge boss (2-3) at a preset distance apart from the top end at the end connected with the pedal (3), the pedal (3) is provided with a hinge slot (3-1) matched with the hinge boss (2-3), and the hinge boss (2-3) and the hinge slot (3-1) are rotationally connected through a pin structure. The bottom end of the hinge slot (3-1) is provided with a bayonet-shaped top support structure (3-2), the shape of the top support structure (3-2) is matched with the end of the foot pedal support rod (2), and the pedal (3) is positioned at an angle perpendicular to the foot pedal support rod (2) through the limiting fit of the top support structure (3-2) and the end of the foot pedal support rod (2).

2. The wheelchair support assembly of claim 1, wherein, The second plug (2-2) is in a T-shaped boss structure, the extension direction of the second plug (2-2) is consistent with that of the first plug (2-1), and the second slot (1-2) is in a T-shaped groove.

3. The wheelchair support assembly of any one of claims 1 or 2, wherein, The end of the foot pedal support rod (2) is provided with a curved transition surface (2-4) at the side edge between the first plug (2-1) and the second plug (2-2), and the bracket body (1) is provided with a matched curved surface at the side edge between the first slot (1-1) and the second slot (1-2), the curved transition surface (2-4) and the matched curved surface are surface-fitted to form an integrated structure of the foot pedal support rod (2) and the bracket body (1) in the state of plug assembly insertion into the slot mechanism.

4. The wheelchair support assembly of claim 3, wherein, The bracket body (1) comprises a front wheel bracket (4) integrally connected thereto, the bottom end of the front wheel bracket (4) is connected with a front wheel (5), the first slot (1-1) is located at the top end of the front wheel bracket (4), the front wheel bracket (4) is vertically arranged, and the first slot (1-1) is coaxially arranged with the front wheel bracket (4).

5. The wheelchair support assembly of claim 4, wherein, The top surface of the foot pedal support rod (2) is in a circular arc inclined surface shape, and the top surface of the foot pedal support rod (2) is smoothly transitioned with the top surface of the bracket body (1) in the state of plug assembly insertion into the slot mechanism.

6. A foldable wheelchair comprising a wheelchair frame assembly, a drive assembly, a wheel assembly, a seat pan (6) and a backrest (7), characterized in that, The wheelchair bracket assembly is as claimed in any one of claims 1-5. The wheelchair bracket assembly is as claimed in any one of claims 1-5.

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