CN114224629A

CN114224629A - Damping wheel subassembly and wheelchair

Info

Publication number: CN114224629A
Application number: CN202111626761.4A
Authority: CN
Inventors: 汪金星; 丁宏钰
Original assignee: Shenzhen Ubtech Technology Co ltd
Current assignee: Shenzhen Ubtech Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-03-25

Abstract

The present application relates to a vibration damping wheel assembly and a wheelchair. In the vibration damping wheel assembly, the swinging member is hinged to the frame, one end of the elastic member is erected on the frame through the first limit, the other end of the elastic member is erected on the swinging member through the second limit, and the wheel is connected to the swinging member. During the operation of the mobile device equipped with the vibration-damping wheel assembly, when the wheel is subjected to vibration and impact, the swinging member swings relative to the frame around its hinge axis, the elastic member will be compressed, and the elastic member will have a reaction force on the swinging member, thereby consuming Dissipates vibration energy, reduces vibration transmitted to the frame, improves the comfort of using mobile devices and reduces bumps. The vibration damping wheel assembly contains fewer parts, has a simple structure, is easy to assemble, and has a low cost. The wheelchair adopts the above-mentioned vibration-damping wheel assembly, so that the wheelchair has a better vibration-damping effect and a simple structure.

Description

Damping wheel subassembly and wheelchair

Technical Field

The application belongs to the technical field of damping wheels, and particularly relates to a damping wheel assembly and a wheelchair.

Background

Wheelchairs are chairs that are equipped with wheels to help replace walking. The wheelchair can meet the requirements of physically disabled persons and persons with mobility disabilities for riding instead of walk, and is convenient for family members to move and take care of patients, so that the patients can do physical exercise and participate in social activities by means of the wheelchair. The conventional wheelchair usually adopts a damping wheel assembly to realize damping, and the conventional damping wheel assembly contains more parts, has a complex structure and is higher in cost.

Disclosure of Invention

An object of the embodiment of the application is to provide a damping wheel subassembly and wheelchair to solve the technical problem that the structure of the existing damping wheel subassembly is complicated.

The embodiment of the application provides a damping wheel subassembly includes: the device comprises a swinging piece, a first limiting frame, a second limiting frame, wheels and an elastic piece; the swinging piece is hinged on the frame; the first limiting frame is fixed on the frame, and the second limiting frame is fixed on the swinging piece; the wheels are connected to the swinging piece, and the swinging piece is spaced from the hinge axis of the frame and the axis of the wheels; the elastic piece is arranged between the first limiting frame and the second limiting frame in a compressed mode.

Optionally, the swinging member has a connecting hole, and the frame is provided with a connecting shaft rotatably mounted at the connecting hole.

Optionally, the connecting shaft is supported in the connecting hole by a bearing.

Optionally, the first limiting frame has a first limiting post, the second limiting frame has a second limiting post, the elastic member is a compression spring, a first end of the compression spring is sleeved outside the first limiting post and abuts against the first limiting frame, and a second end of the compression spring is sleeved outside the second limiting post and abuts against the second limiting frame.

Optionally, the first limiting frame comprises a limiting seat and a fixing seat; the fixed seat is fixed on the frame and is provided with a through hole; the first limiting column is connected to the limiting seat; the first limiting column penetrates through the through hole, the limiting seat is fixed on the fixed seat, and an annular groove is formed between the first limiting column and the inner wall of the through hole; the first end of the compression spring extends into the annular groove and abuts against the limiting seat;

or the second limiting frame comprises a limiting seat and a fixing seat; the fixed seat is fixed on the swinging piece and is provided with a through hole; the second limiting column is connected to the limiting seat; the second limiting column penetrates through the through hole, the limiting seat is fixed on the fixed seat, and an annular groove is formed between the second limiting column and the inner wall of the through hole; and the second end of the compression spring extends into the annular groove and abuts against the limiting seat.

Optionally, the swinging member is a plate member, and the wheel is rotatably mounted on the plate member;

or, the swinging piece is a driving motor, and the wheel is fixed on an output shaft of the driving motor.

Optionally, the hinge axis of the swinging member and the frame and the elastic member are respectively located on two sides of a vertical plane perpendicular to the axis of the wheel, and the length direction of the elastic member is arranged towards the axis of the wheel.

Optionally, the vehicle further comprises a limiting member disposed on the frame and used for limiting a swing range of the swing member.

The beneficial effect of the damping wheel subassembly that this application embodiment provided lies in: in the damping wheel assembly, the swinging part is hinged to the frame, one end of the elastic part is erected on the frame through a first limiting frame, the other end of the elastic part is erected on the swinging part through a second limiting frame, and the wheel is connected to the swinging part. The mobile device who is equipped with damping wheel subassembly is at the operation in-process, and when the wheel received vibration impact, the relative frame swing of swing piece round its articulated axis, and the elastic component can compress, and the elastic component has reaction force to the swing piece again to dissipation vibration energy reduces the vibration that transmits to the frame, promotes the travelling comfort of using the mobile device and reduces the sense of jolting. The damping wheel component comprises fewer parts, and is simple in structure, easy to assemble and low in cost.

An embodiment of the present application provides a wheelchair, including: the damping wheel assembly comprises a frame and two pairs of wheel assemblies, at least one pair of wheel assemblies is the damping wheel assembly, the swinging piece is hinged to the frame, and the first limiting frame is fixed on the frame.

Optionally, the two pairs of wheel assemblies are the damping wheel assemblies, the swinging member of the pair of damping wheel assemblies located at the front side of the wheelchair is a plate member, and the swinging member of the pair of damping wheel assemblies located at the rear side of the wheelchair is a driving motor.

The wheelchair that this application embodiment provided has: the wheelchair adopts the damping wheel assembly, so that the wheelchair has a good damping effect and a simple structure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic assembly view of a damped wheel assembly and a vehicle frame provided in accordance with an embodiment of the present application;

FIG. 2 is a top plan view of the shock absorbing wheel assembly and frame of FIG. 1;

FIG. 3 is an exploded perspective view of the shock absorbing wheel assembly and frame of FIG. 1;

FIG. 4 is a further exploded perspective view of the shock absorbing wheel assembly and frame of FIG. 3;

FIG. 5 is a schematic assembly view of a damped wheel assembly and frame provided in accordance with another embodiment of the present application;

FIG. 6 is a top plan view of the shock absorbing wheel assembly and frame of FIG. 5;

FIG. 7 is an exploded perspective view of the shock absorbing wheel assembly and frame of FIG. 5;

FIG. 8 is a further exploded perspective view of the shock absorbing wheel assembly and frame of FIG. 7;

figure 9 is an assembled perspective view of a wheelchair according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1-4, embodiments of the present application provide a damper wheel assembly 100 that may be used in a wheelchair or other mobile device. The damper wheel assembly 100 includes a swing member 110, a first stopper 120, a second stopper 130, a wheel 140, and an elastic member 150. The swinging member 110 is hinged on the frame 200; the first position-limiting frame 120 is fixed on the frame 200, and the second position-limiting frame 130 is fixed on the swing member 110. The wheel 140 is attached to the swing member 110, and the swing member 110 is spaced from the hinge axis 111 of the frame 200 and the axis 141 of the wheel 140. The elastic member 150 is disposed between the first stopper frame 120 and the second stopper frame 130 in a compressed manner.

The frame 200 is a frame body of the mobile device, and can mount the wheels 140 and other components.

In the damping wheel assembly 100 provided in the embodiment of the present application, the swinging member 110 is hinged to the frame 200, one end of the elastic member 150 is disposed on the frame 200 through the first limiting frame 120, the other end of the elastic member 150 is disposed on the swinging member 110 through the second limiting frame 130, and the wheel 140 is connected to the swinging member 110. During operation of the mobile device equipped with the damper wheel assembly 100, when the wheel 140 is subjected to vibration impact, the swinging member 110 swings relative to the frame 200 about the hinge axis 111, the elastic member 150 compresses, and the elastic member 150 reacts to the swinging member 110, thereby dissipating vibration energy, reducing vibration transmitted to the frame 200, improving comfort of using the mobile device and reducing a bumpy feeling. The damper wheel assembly 100 contains fewer parts, is simple in structure, easy to assemble, and low in cost.

In another embodiment of the present application, referring to fig. 3 and 4, the swing member 110 has a connection hole 112, the frame 200 is provided with a connection shaft 113, and the connection shaft 113 is rotatably mounted at the connection hole 112. The swinging member 110 is conveniently rotatably mounted on the frame 200 by means of the shaft hole. The connecting shaft 113 may be welded or otherwise connected to the frame 200.

In another embodiment of the present application, referring to fig. 3 and 4, the connecting shaft 113 is supported in the connecting hole 112 through a bearing 114. A bearing 114 is provided between the coupling hole 112 of the swing member 110 and the coupling shaft 113 to facilitate stable and smooth swinging of the swing member 110 with respect to the frame 200.

Illustratively, two bearings 114 are arranged on the connecting shaft 113 at intervals, so as to facilitate the swinging of the swinging member 110 relative to the frame 200. A sleeve 115 is arranged between the two bearings 114, the sleeve 115 is sleeved outside the connecting shaft 113, and a nut is screwed on the end of the connecting shaft 113 to axially limit the two bearings 114.

In another embodiment of the present application, referring to fig. 2 to 4, the first position-limiting frame 120 has a first position-limiting post 121, the second position-limiting frame 130 has a second position-limiting post 131, the elastic element 150 is a compression spring, a first end 151 of the compression spring is sleeved outside the first position-limiting post 121 and abuts against the first position-limiting frame 120, and a second end 152 of the compression spring is sleeved outside the second position-limiting post 131 and abuts against the second position-limiting frame 130. The two ends of the compression spring are respectively limited by the first limiting column 121 of the first limiting frame 120 and the second limiting column 131 of the second limiting frame 130, so that the possibility that the compression spring is separated from the frame 200 and the swinging piece 110 in the deformation process is reduced, and the reliability of the damping wheel assembly 100 is improved. The first position-limiting frame 120 and the frame 200, and the second position-limiting frame 130 and the swinging member 110 can be connected by fasteners or other methods. The proper elastic coefficient of the compression spring is selected, so that the vibration reduction effect can be improved.

In another embodiment of the present application, referring to fig. 3 and 4, the second position-limiting frame 130 includes a position-limiting base 132 and a fixing base 133; the fixing seat 133 is fixed on the swinging member 110, and the fixing seat 133 is provided with a through hole 1331; the second position-limiting column 131 is connected to the position-limiting base 132; the second limiting column 131 penetrates through the through hole 1331, the limiting seat 132 is fixed on the fixing seat 133, and an annular groove 134 is formed between the second limiting column 131 and the inner wall of the through hole 1331; the second end 152 of the compression spring extends into the annular groove 134 and abuts against the retainer 132. With the above-mentioned solution, it is convenient to pre-compress the elastic member 150 between the first stopper 120 and the second stopper 130, so that the elastic member 150 is not easily separated from the frame 200 and the swing member 110. Referring to fig. 2, before the compression spring is assembled, the first stopper 120 is fixed to the frame 200, and the fixing seat 133 is fixed to the swing member 110. When the compression spring is assembled, the first end 151 of the compression spring firstly penetrates through the through hole 1331 of the fixing seat 121 and is sleeved on the first limiting column 121 of the first limiting frame 120, then the limiting seat 122 is fixed on the fixing seat 121, so that the second end 152 of the compression spring is sleeved on the second limiting column 131 of the second limiting frame 130, and the second end 152 of the compression spring extends into the annular groove 134 formed between the second limiting column 131 and the inner wall of the through hole 1331, thereby realizing the pre-compression assembly of the compression spring and being convenient to install. The limiting seat 122 can be fixed on the fixing seat 121 by a fastener 135, so that the assembly is easy and the connection is reliable.

In another embodiment of the present application, referring to fig. 5 to 8, the first position-limiting frame 120 includes a position-limiting base 122 and a fixing base 123; the fixing seat 123 is fixed on the frame 200, and the fixing seat 123 is provided with a through hole 1231; the first position-limiting column 121 is connected to the position-limiting base 122; the first limiting column 121 penetrates through the through hole 1231, the limiting seat 122 is fixed on the fixing seat 123, and an annular groove is formed between the first limiting column 121 and the inner wall of the through hole 1231; the first end of the compression spring extends into the annular groove and abuts against the limiting seat 122. With the above-mentioned solution, it is convenient to pre-compress the elastic member 150 between the first stopper 120 and the second stopper 130, so that the elastic member 150 is not easily separated from the frame 200 and the swing member 110. Before the compression spring is assembled, the fixing seat 123 is fixed on the frame 200, and the second limiting frame 130 is fixed on the swinging member 110. When the compression spring is assembled, the second end 152 of the compression spring firstly penetrates through the via hole 1231 of the fixing seat 121 and is sleeved on the second limiting column 131 of the second limiting frame 130, and then the limiting seat 122 is fixed on the fixing seat 121, so that the first end 151 of the compression spring is sleeved on the first limiting column 121 of the first limiting frame 120, and the first end 151 of the compression spring extends into an annular groove formed between the first limiting column 121 and the inner wall of the via hole 1231, thereby realizing the pre-compression assembly of the compression spring and being convenient to install. The limiting seat 122 can be fixed on the fixing seat 121 by adopting a fastening piece 125, so that the assembly is easy and the connection is reliable.

In another embodiment of the present application, referring to fig. 1 to 4, the swinging member 110 is a plate member 110a, and the wheel 140 is rotatably mounted on the plate member 110 a. This is suitable for use with a driven wheel, i.e. a wheel that follows the motion. The wheel 140 in this manner may serve as the front wheel 140a when applied to a wheelchair. When the wheel 140 is subjected to a vibration impact, the plate 110a swings about the hinge axis 111 relative to the frame 200, the elastic member 150 is compressed, and the elastic member 150 reacts to the plate 110a, thereby dissipating the vibration energy and reducing the vibration transmitted to the frame 200.

Illustratively, referring to fig. 3 and 4, the plate member 110a is provided with a mounting shaft 117, and the wheel 140 is rotatably mounted on the mounting shaft 117. The wheel 140 may be supported on the mounting shaft 117 by bearings 118 to facilitate smooth rotation of the wheel 140. Two bearings 118 may be spaced apart on the mounting shaft 117 to securely support the wheel 140 on the mounting shaft 117. Two bearings 118 can set up the sleeve, and outside the installation axle 117 was located to the sleeve cover, set up the nut at the tip of installation axle, realized two bearings 118's axial spacing.

In another embodiment of the present application, referring to fig. 5 to 8, the swinging member 110 is a driving motor 110b, and the wheel 140 is fixed on an output shaft of the driving motor 110 b. This is suitable for the driving wheels, i.e., the wheels driven to rotate by the driving motor 110 b. The wheel 140 in this manner may serve as the rear wheel 140b when applied to a wheelchair. When the wheel 140 is subjected to vibration impact, the driving motor 110b swings around the hinge axis 111 relative to the frame 200, the elastic member 150 is compressed, and the elastic member 150 reacts to the driving motor 110b, so that the vibration energy is dissipated and the vibration transmitted to the frame 200 is reduced.

In another embodiment of the present application, referring to fig. 1 and 5, the hinge axis 111 of the swing member 110 and the frame 200 and the elastic member 150 are respectively located on two sides of the vertical plane 142 perpendicular to the axis 141 of the wheel 140, and the length direction of the elastic member 150 is disposed toward the axis 141 of the wheel 140. By adopting the above scheme, after the wheels 140 are impacted by the ground, the swinging member 110 swings relative to the frame 200, and the elastic member 150 effectively deforms, so that the dissipation of vibration energy is facilitated, and the vibration reduction effect is realized.

In another embodiment of the present application, please refer to fig. 1 and 5, which further includes a limiting member 160 disposed on the frame 200 and used for limiting the swing range of the swing member 110. When the wheel 140 receives an impact force, the wheel 140 drives the swinging member 110 to swing relative to the frame 200, and the limiting member 160 can prevent the swinging member 110 from continuously swinging, so as to limit the maximum swinging position of the swinging member 110. The stop member 160 may be a stop, a post, or other forms. The stop 160 may be mounted to the frame 200 by fasteners or other means.

Referring to fig. 9, the wheelchair according to the embodiment of the present application includes a frame 200 and two pairs of wheel assemblies, at least one pair of wheel assemblies is the damping wheel assembly 100, a swinging member 110 is hinged to the frame 200, and a first limiting frame 120 is fixed to the frame 200. The wheelchair adopts the damping wheel assembly 100, so that the wheelchair has a good damping effect and a simple structure.

In another embodiment of the present application, referring to fig. 1, 5 and 9, two pairs of wheel assemblies are damping wheel assemblies 100, the swinging member 110 of the pair of damping wheel assemblies 100 located at the front side of the wheelchair is a plate member 110a, and the swinging member 110 of the pair of damping wheel assemblies 100 located at the rear side of the wheelchair is a driving motor 110 b. The wheelchair is driven by the rear wheels 140b, four-wheel independent vibration damping of the wheelchair can be realized, and the vibration damping effect is excellent.

In another embodiment of the present application, referring to fig. 9, the elastic member 150 of the pair of shock absorbing wheel assemblies 100 positioned at the front side of the wheelchair is disposed near the middle of the frame 200, and the plate member 110a of the pair of shock absorbing wheel assemblies 100 positioned at the front side of the wheelchair is disposed near the front side of the frame 200. The elastic member 150 of the pair of damper wheel assemblies 100 located at the rear side of the wheelchair is disposed near the middle of the frame 200, and the driving motor 110b of the pair of damper wheel assemblies 100 located at the rear side of the wheelchair is disposed near the rear side of the frame 200. With this arrangement, the vehicle frame 200 can be smoothly operated when the front and

rear wheels

140a and 140b are subjected to impact, reducing the possibility that the vehicle frame 200 will roll over forward or backward during operation.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vibration damping wheel assembly, characterized in that it comprises: a swinging member, a first limiting frame, a second limiting frame, a wheel and an elastic member; the swinging member is hinged on the frame; the first limiting frame The position frame is fixed on the vehicle frame, and the second limit frame is fixed on the swing member; the wheel is connected to the swing member, and the hinge axis of the swing member and the frame and the wheel The axes are spaced apart; the elastic member is compressed and arranged between the first limit frame and the second limit frame.

2 . The vibration damping wheel assembly according to claim 1 , wherein the swinging member has a connecting hole, and the frame is provided with a connecting shaft, and the connecting shaft is rotatably installed at the connecting hole. 3 .

3. The vibration damping wheel assembly according to claim 2, wherein the connecting shaft is supported in the connecting hole through a bearing.

4 . The vibration damping wheel assembly of claim 1 , wherein the first limit frame has a first limit post, the second limit frame has a second limit post, and the elastic member It is a compression spring, the first end of the compression spring is sleeved on the outside of the first limit post and abuts on the first limit frame, and the second end of the compression spring is sleeved on the second limit The limit post is outside and abuts against the second limit frame.

5 . The vibration damping wheel assembly according to claim 4 , wherein the first limiting frame comprises a limiting seat and a fixing seat; the fixing seat is fixed on the vehicle frame, and the fixing seat has a via hole; the first limit post is connected to the limit seat; the first limit post is pierced through the via hole, the limit seat is fixed on the fixed seat, the first limit post is An annular groove is formed between a limit post and the inner wall of the via hole; the first end of the compression spring extends into the annular groove and abuts against the limit seat;

Or, the second limit frame includes a limit seat and a fixed seat; the fixed seat is fixed on the swinging member, and the fixed seat has a through hole; the second limit post is connected to the limit The second limit post is passed through the via hole, the limit seat is fixed on the fixed seat, and an annular groove is formed between the second limit post and the inner wall of the via hole ; The second end of the compression spring extends into the annular groove and abuts against the limiting seat.

6. The vibration damping wheel assembly according to any one of claims 1 to 5, wherein the swinging member is a plate member, and the wheel is rotatably mounted on the plate member;

Or, the swinging member is a driving motor, and the wheel is fixed on the output shaft of the driving motor.

7. The vibration damping wheel assembly according to any one of claims 1 to 5, wherein the hinge axis of the swing member and the frame and the elastic member are respectively located perpendicular to the axis of the wheel On both sides of the vertical plane, the length direction of the elastic member is arranged toward the axis of the wheel.

8. The vibration damping wheel assembly according to any one of claims 1 to 5, further comprising a limiting member disposed on the vehicle frame and used to limit the swinging range of the swinging member.

9. A wheelchair, comprising: a frame and two pairs of wheel assemblies, at least one pair of the wheel assemblies is the vibration-damping wheel assembly according to any one of claims 1 to 8, and the swinging member is hinged On the frame, the first limiting frame is fixed on the frame.

10 . The wheelchair according to claim 9 , wherein the two pairs of the wheel assemblies are the vibration-damping wheel assemblies, and the one of the pair of vibration-damping wheel assemblies located on the front side of the wheelchair is the wheelchair. 11 . The swinging member is a plate member, and the swinging member in the pair of vibration-damping wheel assemblies located on the rear side of the wheelchair is a driving motor.