Multi-dimensional adjustable wheelchair pedal structure and wheelchair

Abstract

The utility model discloses a multi-dimensional adjustable wheelchair pedal structure in the field of medical instruments. The multi-dimensional adjustable wheelchair pedal structure comprises a pedal assembly and a connecting frame. The pedal assembly comprises a pedal and a Y2-axis rotating seat, the pedal is connected with the Y2-axis rotating seat through a first movable assembly, and the pedal has combined motion freedom degrees in an XZ plane and a YZ plane; the Y2-axis rotating seat is movably connected with the connecting frame through a second movable assembly, and the Y2-axis rotating seat axially rotates around the second movable assembly and has the motion freedom degree of an XY plane; the first movable assembly and the second movable assembly are designed on the pedal, so that the pedal can rotate around the connecting frame, meanwhile, the pedal can be driven by the first movable assembly to move in the XZ plane and the YZ plane in a combined mode, the movement freedom degree in the space of the pedal is high, more angles and inclination can be adjusted to serve a patient, and the applicability is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a multi-dimensional adjustable wheelchair footboard structure and a wheelchair. BACKGROUND

[0002] Since DMD patients lose muscle function during childhood development, it will affect the normal growth and shaping process of the feet, deviate the bone development from the normal track, and cause deformities such as talipes equino varus and calcaneal valgus; the adjustment mode of the existing wheelchair footboard mainly includes height adjustment and single-dimensional rotation folding operation. It cannot meet the needs of DMD patients, so it is necessary to customize suitable footboards to support and correct the deformed feet. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a multi-dimensional adjustable wheelchair footboard structure and a wheelchair to solve the defects of small activity range of the wheelchair footboard and poor support for the patient's feet in the prior art.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] In a first aspect, the present application discloses a multi-dimensional adjustable wheelchair footboard structure, which comprises a footboard assembly and a connecting frame.

[0006] The footboard assembly comprises a footboard and a Y2-axis rotating seat, the footboard is connected to the Y2-axis rotating seat through a first movable assembly, and the footboard has a combined movement freedom degree in the XZ plane and the YZ plane.

[0007] The Y2-axis rotating seat is movably connected to the connecting frame through a second movable assembly, the Y2-axis rotating seat rotates around the second movable assembly in the axial direction, and has a movement freedom degree in the XY plane.

[0008] In a further aspect of the present application, the first movable assembly comprises a Y2-axis rotating arm and a lead screw adjusting assembly.

[0009] One end of the Y2-axis rotating arm is hinged to the Y2-axis rotating seat, the footboard is movably connected to the Y2-axis rotating arm through an X-axis locking support and an X-axis support to realize the movement degree of the footboard in the ZY plane, and the lead screw adjusting assembly is movably connected to the Y2-axis rotating arm and the Y2-axis rotating seat at both ends; the lead screw adjusting assembly drives the Y2-axis rotating arm to rotate.

[0010] Further, the screw rod adjusting assembly comprises a Y2-axis screw rod and a screw nut, the screw nut is threadedly connected with the Y2-axis screw rod, the Y2-axis screw rod is rotatably arranged in the mounting groove of the Y2-axis rotating seat, a connecting rod is arranged between the screw nut and the Y2-axis rotating arm, one end of the connecting rod is hingedly connected with the screw nut, and the other end of the connecting rod is hingedly connected with the Y2-axis rotating arm, the Y2-axis screw rod is rotated to adjust the position of the screw nut, and the movement degree of the Y2-axis rotating arm in the XZ plane is realized.

[0011] Further, the pedal is provided with an X-axis locking screw rod on one side, the X-axis locking screw rod is rotatably connected with the pedal and is connected with the X-axis locking support in a matched mode, the X-axis locking screw rod is rotated to fix the X-axis locking support on the Y2-axis rotating arm.

[0012] Further, the second movable assembly comprises a Z-axis locking support and a Z-axis hinge shaft, the Z-axis locking support is fixedly connected with the connecting frame, the Z-axis hinge shaft is sleeved in the mounting cavity of the Z-axis locking support, and the Y2-axis rotating seat is connected with the Z-axis hinge shaft through the Z-axis rotating arm.

[0013] Further, the Y2-axis rotating seat and the Z-axis hinge shaft are further provided with a Y1-axis angle adjuster.

[0014] The Y1-axis angle adjuster comprises a fixed part and a movable part which are rotatably connected, the fixed part is fixed with the Z-axis rotating arm, the movable part is fixed with the Y2-axis rotating seat, a Y1-axis knob is arranged on the Z-axis rotating arm, and the Y1-axis knob is connected with the driving part of the Y1-axis angle adjuster.

[0015] Further, the pedal is provided with a protective edge on the side close to the connecting frame.

[0016] Further, the pedal assembly comprises two pedal assemblies which are symmetrically arranged on the two sides of the connecting frame.

[0017] In the second aspect, the application discloses a wheelchair, which comprises the multi-dimensional adjustable wheelchair foot pedal.

[0018] The application has the following beneficial effects:

[0019] In the application, the first movable assembly and the second movable assembly are arranged on the pedal, so that the pedal can rotate around the connecting frame, the pedal can also combine movement in the XZ plane and the YZ plane under the driving of the first movable assembly, the spatial movement degree of the pedal is high, more angles and inclinations can be adjusted to serve patients, and the applicability is higher.

[0020] Wherein Y2 axis rotating seat and Z axis hinge shaft are further provided with Y1 axis angle adjuster, so that the whole pedal can make folding movement to connecting frame, and the space occupation is reduced when transporting or storing, and the storage and transportation are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a single side structure schematic diagram of multi-dimension adjustable wheelchair foot pedal in the embodiment of the application.

[0022] Figure 2 It is a single side internal structure schematic diagram of multi-dimension adjustable wheelchair foot pedal in the embodiment of the application.

[0023] Figure 3 It is a structure schematic diagram of Y1 axis angle adjuster in the embodiment of the application.

[0024] Figure 4 It is a whole structure schematic diagram of multi-dimension adjustable wheelchair foot pedal in the embodiment of the application.

[0025] Figure 5 It is a structure schematic diagram of pedal after rotating in the embodiment of the application.

[0026] Figure 6 It is Figure 5 It is an enlarged view of I in the figure.

[0027] Wherein:

[0028] 1, connecting frame; 2, Z axis locking support; 3, Z axis hinge shaft; 4, Z axis rotating arm; 5, Z axis locking bolt; 6, Y1 axis knob; 7, Y1 axis angle adjuster; 8, Y2 axis rotating seat; 9, Y2 axis rotating arm; 10, Y2 axis screw; 11, Y2 axis rotating shaft; 12, X axis locking screw; 13, X axis locking support; 14, X axis support; 15, pedal; 16, nut; 17, connecting rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. The description of the at least one exemplary embodiment is actually only illustrative, and is by no means as any limitation on the application and its application or use.

[0030] The embodiment discloses a multi-dimension adjustable wheelchair footboard structure, the footboard structure has higher activity freedom degree compared with a conventional wheelchair footboard 15, movement and steering can be basically realized in space, and the footboard structure is favorable for use of a deformed foot of a DMD patient, and the footboard structure comprises a footboard assembly and a connecting frame 1; the footboard assembly comprises the footboard 15 and a Y2-axis rotating seat 8, the footboard 15 is connected with the Y2-axis rotating seat 8 through a first activity assembly, the footboard 15 has combined movement freedom degrees in XZ and YZ planes; the Y2-axis rotating seat 8 is movably connected with the connecting frame 1 through a second activity assembly, the Y2-axis rotating seat 8 rotates around the second activity assembly in the axial direction and has movement freedom degrees in an XY plane, and the footboard 15 can rotate around the X, Y and Z axes in the space.

[0031] In some embodiments, the multi-dimension adjustable wheelchair footboard 15 structure is designed as follows;

[0032] As shown in the accompanying drawings Figure 1 And Figure 2 The first activity assembly in the embodiment comprises a Y2-axis rotating arm 9 and a screw rod adjusting assembly; one end of the Y2-axis rotating arm 9 is hinged to the Y2-axis rotating seat 8; one end of the Y2-axis rotating arm 9 is fixed with two parallel side plates, the side plates are rotatably installed on the Y2-axis rotating seat 8 through a Y2-axis rotating shaft 11, and the footboard 15 is hinged to the Y2-axis rotating arm 9 through an X-axis locking support 13 and an X-axis support 14; at this time, the Y2-axis rotating arm 9 can rotate around the Y2-axis rotating shaft 11, the footboard 15 can rotate around the Y2-axis rotating arm 9 in the axial direction, and one side of the footboard 15 is provided with an X-axis locking screw rod 12, the X-axis locking screw rod 12 is rotatably connected with the footboard 15 and cooperates with the X-axis locking support 13; as shown in the accompanying drawings Figure 5 And Figure 6 The X-axis locking support 13 is provided with a locking gap, the locking gap is extended with a convex plate on both sides, the X-axis locking screw rod 12 is rotatably installed on the footboard 15, the X-axis locking screw rod 12 is screwed through one side of the convex plate and rotatably connected with the other side of the convex plate;

[0033] In use, when the X-axis locking screw rod 12 rotates, the two convex plates are close to each other, the locking gap becomes smaller, the X-axis locking support 13 is pressed to contact the Y2-axis rotating arm 9, at this time, the footboard 15 is fixed radially by the Y2-axis rotating arm 9, that is, the footboard 15 cannot rotate around the X axis in the space; the screw rod adjusting assembly is used for realizing the movement degree of the footboard 15 in the XZ plane, two ends of the screw rod adjusting assembly are movably connected with the Y2-axis rotating arm 9 and the Y2-axis rotating seat 8; the screw rod adjusting assembly is located at a power output end of the Y2-axis rotating seat 8, one side of the Y2-axis rotating arm 9 is used as a driven end, and the screw rod adjusting assembly drives the Y2-axis rotating arm 9 to rotate.

[0034] The screw rod adjusting assembly in the embodiment comprises a Y2 shaft screw rod 10 and a nut 16 combined into a screw pair, wherein the nut 16 is threadedly assembled with the Y2 shaft screw rod 10, the Y2 shaft screw rod 10 is rotatably installed at both ends in the installation groove of the Y2 shaft rotating seat 8, and the end of the Y2 shaft screw rod 10 penetrating out of the Y2 shaft rotating seat 8 is provided with a knob disc, facilitating rotation of the Y2 shaft screw rod 10. The nut 16 and the Y2 shaft rotating arm 9 are provided with a connecting rod 17, one end of the connecting rod 17 is hingedly connected with the nut 16, and the other end is hingedly connected with the Y2 shaft rotating arm 9. In use, the nut 16 is constrained from rotating with the rotation of the Y2 shaft screw rod 10, so that the nut 16 is positionally switched along the length direction of the Y2 shaft screw rod 10, the angle between the pedal 15 and the Y2 shaft screw rod 10 is adjusted, and the maximum angle between the pedal 15 and the Y2 shaft screw rod 10 is reached when the connecting rod 17 and the Y2 shaft screw rod 10 are perpendicular. The adjusting precision is high. The pedal 15 moves in the XZ plane.

[0035] As shown in the accompanying drawings, Figure 1 The second movable assembly in the embodiment comprises a Z-axis locking support 2 and a Z-axis hinge shaft 3, wherein the Z-axis locking support 2 is fixedly welded on the connecting frame 1, the Z-axis hinge shaft 3 is sleeved in the installation cavity of the Z-axis locking support 2, the Z-axis locking support 2 is provided with installation rings upward and downward, the Z-axis hinge shaft 3 is rotatably installed between the two installation rings, the Z-axis locking bolt 5 is threadedly installed on the installation ring, the Z-axis locking bolt 5 is fixed when the Z-axis locking bolt 5 is rotatably contacted with the Z-axis hinge shaft 3, the Z-axis rotating arm 4 is further welded on the Z-axis hinge shaft 3, and the Y2 shaft rotating seat 8 is connected with the Z-axis rotating arm 4. In use, the pedal 15 is rotated around the Z-axis by rotating the Z-axis rotating arm 4 around the Z-axis in space.

[0036] As shown in the accompanying drawings, Figure 3 In a further embodiment, the Y2 shaft rotating seat 8 and the Z-axis hinge shaft 3 are further provided with a Y1 shaft angle adjuster 7.

[0037] The Y1 shaft angle adjuster 7 comprises a fixed part and a movable part rotatably connected, the fixed part can be fixed with the Z-axis rotating arm 4 through a bolt in production, the movable part is fixedly welded with the Y2 shaft rotating seat 8, the Y1 shaft knob 6 is installed on the Z-axis rotating arm 4, the Y1 shaft knob 6 is connected with the driving part of the Y1 shaft angle adjuster 7, the movable part drives the Y2 shaft rotating seat 8 to rotate around the Y-axis by rotating the Y1 shaft knob 6 in use, the Y2 shaft rotating seat 8 is close to or away from the connecting frame 1, a protective edge can be provided on the side of the pedal 15 close to the connecting frame 1 when necessary to limit the position of the heel of the patient, the adjusting part in the surface contact structure, and an anti-skid foot pad can also be provided on the surface of the pedal 15 to increase the friction force when the foot contacts.

[0038] In another embodiment, a wheelchair is also provided, which is equipped with the multi-dimension adjustable wheelchair footboard structure in the above embodiment, the footboard assembly in the wheelchair is provided with two and symmetrically arranged on both sides of the connecting frame. The installation position is shown in the accompanying drawings Figure 4 .

[0039] Specific use;

[0040] Firstly, the footboard 15 can be rotated around the Z-axis direction in space by rotating the Z-axis hinge shaft 3, rotating the Y2-axis screw rod 10, driving the nut 16 to move along the length direction of the Y2-axis screw rod 10, moving the footboard 15 around the Y-axis in space through the connecting rod 17, and finally rotating the footboard 15 around the X-axis in space by swinging the footboard 15 and fixing the adjusted footboard 15 by using the X-axis locking screw 12. In addition, the Y1-axis angle adjuster 7 is arranged in the structure, the footboard 15 has strong motor performance, is beneficial to the support of the feet of the DMD patient, can be folded to the connecting frame 1, greatly reduces the volume of the mechanism, and is convenient for storage and transportation.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

Claims

1. A multi-dimensionally adjustable wheelchair footrest structure, characterized by, The pedal assembly and the connecting frame are connected; The pedal assembly comprises a pedal and a Y2-axis rotating seat, the pedal is connected with the Y2-axis rotating seat through a first movable assembly, the pedal has a combined movement degree in XZ plane and YZ plane; The Y2-axis rotating seat is movably connected with the connecting frame through a second movable assembly, the Y2-axis rotating seat rotates around the second movable assembly and has a movement degree in XY plane.

2. The multi-dimensional adjustable wheelchair footrest structure according to claim 1, wherein, The first movable assembly comprises a Y2-axis rotating arm and a screw rod adjusting assembly; One end of the Y2-axis rotating arm is hingedly connected with the Y2-axis rotating seat, the pedal is movably connected with the Y2-axis rotating arm through an X-axis locking support and an X-axis support, the pedal has a movement degree in ZY plane, two ends of the screw rod adjusting assembly are movably connected with the Y2-axis rotating arm and the Y2-axis rotating seat, and the screw rod adjusting assembly drives the Y2-axis rotating arm to rotate.

3. The multi-dimensional adjustable wheelchair footrest structure according to claim 2, wherein, The screw rod adjusting assembly comprises a Y2-axis screw rod and a nut, the nut is threadedly connected with the Y2-axis screw rod, two ends of the Y2-axis screw rod are rotatably arranged in a mounting groove of the Y2-axis rotating seat, a connecting rod is arranged between the nut and the Y2-axis rotating arm, one end of the connecting rod is hingedly connected with the nut, and the other end of the connecting rod is hingedly connected with the Y2-axis rotating arm, the Y2-axis screw rod rotates, the position of the nut is switched, and the movement degree of the Y2-axis rotating arm in XZ plane is realized.

4. The multi-dimensional adjustable wheelchair footrest structure according to claim 2, wherein, One side of the pedal is provided with an X-axis locking screw rod, the X-axis locking screw rod is rotatably connected with the pedal and is movably connected with the X-axis locking support, the X-axis locking screw rod rotates, and the X-axis locking support is fixed to the Y2-axis rotating arm.

5. The multi-dimensional adjustable wheelchair footrest structure according to claim 1, wherein, The second movable assembly comprises a Z-axis locking support and a Z-axis hinge shaft, the Z-axis locking support is fixedly connected with the connecting frame, the Z-axis hinge shaft is sleeved in a mounting cavity of the Z-axis locking support, and the Y2-axis rotating seat is connected with the Z-axis hinge shaft through a Z-axis rotating arm.

6. The multi-dimensional adjustable wheelchair footrest structure according to claim 5, wherein, A Y1-axis angle adjuster is further arranged between the Y2-axis rotating seat and the Z-axis hinge shaft. The Y1-axis angle adjuster comprises a fixed part and a movable part which are rotatably connected, the fixed part is fixed with the Z-axis rotating arm, the movable part is fixed with the Y2-axis rotating seat, a Y1-axis knob is arranged on the Z-axis rotating arm, and the Y1-axis knob is connected with a driving part of the Y1-axis angle adjuster.

7. The multi-dimensional adjustable wheelchair footrest structure according to claim 1, wherein, One side of the pedal close to the connecting frame is provided with a protective edge.

8. The multi-dimensional adjustable wheelchair footrest structure of claim 1, wherein, The pedal assembly comprises two pedal assemblies which are symmetrically arranged on two sides of the connecting frame.

9. A wheelchair characterized by The wheelchair pedal structure comprises the multi-dimensional adjustable wheelchair pedal structure according to any one of claims 1 to 8.

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