Wheelchair and bed
By using swing arm structure in the wheelchair to swing along the fulcrum, the problem of poor grounding of wheels in the prior art is solved, the uniform grounding and uniform stress of the wheels are achieved, and the comfort of the wheelchair is improved. stability.
Patent Information
- Application Number
- CN202420391713.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing wheelchair wheel installation method cannot achieve the grounding of all wheels and the force is uniform, resulting in poor wheel landing.
The swing arm structure is used to connect the wheels, so that the wheels swing along the fulcrum, ensuring that all wheels hit the ground and are subjected to uniform force. It provides buffering and stability through the elastic connection between the swing arm and the chair frame and the design of the fixture.
The uniform grounding and stress uniformity of the wheels is achieved, the comfort and stability of the wheelchair is improved, and fatigue and discomfort are reduced.
Smart Images
Figure CN222304184U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of nursing equipment, and in particular to a wheelchair and a bed. Background Art
[0002] Wheelchairs generally provide a means of moving from one area to another for individuals who are injured, ill, or otherwise unable to walk on their own. In some cases, such individuals, particularly those in nursing homes, may spend a large portion of their day in a wheelchair. In some cases, it is often important from a therapeutic perspective to provide comfort and support when such individuals are in a wheelchair for long periods of time. In order to avoid fatigue, numbness, and general discomfort, wheelchairs are designed to provide comfort and support to the individual's lower body, back, and upper body, such as the arms.
[0003] In the relevant technology, for the measurement of wheel contact of a wheelchair, the wheelchair is placed on the platform specified in GB / T18029.1, the platform is adjusted to a horizontal level, the wheelchair is weighted according to the maximum user mass indicated, a piece of paper is placed under any three wheels of the wheelchair, and a 20mm±1mm pad is placed under another wheel. The paper under the three wheels should not be pulled out. However, current wheelchairs basically have the wheels installed directly on the wheelchair, which makes it impossible to achieve that all the wheels of the wheelchair are on the ground and the force is evenly distributed, and it is also impossible to ensure the "wheel contact". Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a wheelchair and a bed, which can achieve that all wheels are on the ground and the force is evenly distributed, thereby ensuring "wheel ground contact".
[0005] In a first aspect, an embodiment of the present application provides a wheelchair, comprising: a chair frame, which is provided with a first mounting end and a second mounting end along a first direction; a swing arm structure, which includes a first fixed end and a second fixed end, and a fulcrum is provided between the first fixed end and the second fixed end, and the fulcrum is connected to the first mounting end and / or the second mounting end; and a plurality of wheels, each of which is connected to the first fixed end and the second fixed end, so that two wheels connected to the same swing arm structure swing around the fulcrum along a second direction, wherein the second direction is perpendicular to the first direction.
[0006] In the above-mentioned implementation process, the first mounting end and / or the second mounting end of the chair body frame is connected to a swing arm structure, and the first fixed end and the second fixed end of the swing arm structure can swing around the fulcrum therebetween, so that when the wheels are respectively mounted on the first fixed end and the second fixed end, they can swing by relying on the swing arm structure, thereby achieving that all wheels are on the ground and are evenly stressed, thereby ensuring the ground contact of the wheels.
[0007] In some embodiments, the swing arm structure includes a swing arm member, a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are both connected to the swing arm member, and the first fixing frame and the second fixing frame are both configured to fix the wheel.
[0008] In the above implementation process, the two ends of the swing arm are connected to a first fixing frame and a second fixing frame, wherein the first fixing frame and the second fixing frame are respectively used to install wheels, so that the wheels can swing by relying on the swing arm after touching the ground, thereby ensuring that all wheels touch the ground and are evenly stressed.
[0009] In some embodiments, the swing arm structure further includes a fixing member, the swing arm member is provided with a fixing hole, the fixing hole is arranged between the first fixing frame and the second fixing frame, and the fixing member is passed through the fixing hole.
[0010] In the above implementation process, the fixing piece is passed through the fixing hole on the swing arm piece to fix the swing arm piece to the chair body frame, which is beneficial to the swinging of the wheel after the swing arm structure is installed, and ensures the uniform force of the wheel.
[0011] In some embodiments, the side of the swing arm member close to the first fixing frame and / or the side close to the second fixing frame is elastically connected to the chair body frame. By elastically connecting the swing arm member to the chair body frame, it is possible to provide a buffer for the floating of the wheels and, to a certain extent, eliminate the processing error of the chair body frame.
[0012] In some embodiments, the swing arm structure further includes a first elastic member and a second elastic member, one end of the first elastic member is connected to the swing arm member, and the other end thereof is connected to the chair body frame, and one end of the second elastic member is connected to the swing arm member, and the other end thereof is connected to the chair body frame. By elastically arranging the first elastic member and the second elastic member between the swing arm member and the chair body frame, a buffer can be provided for the floating of the wheel, and at the same time, the processing error of the chair body frame can be eliminated to a certain extent.
[0013] In some embodiments, the first mounting end of the chair body frame is provided with a connecting frame, the connecting frame is configured as a receiving cavity, the receiving cavity is configured for the passage of the swing arm structure, and the connecting frame is connected to the fixing member.
[0014] In some embodiments, the wheelchair further includes a brake structure, which is connected to the chair frame to brake the wheels.
[0015] In some embodiments, the chair frame includes a chair body member and a chair body seat, the chair body member is connected to the chair body seat, and the chair body member is configured with a first shape and a second shape.
[0016] In some embodiments, the chair body frame further includes a switching structure, wherein the switching structure is respectively connected to the chair body member and the chair body seat, so as to switch the chair body member to the first form or the second form.
[0017] In a second aspect, the present application also provides a bed, comprising a wheelchair as described in any of the above items.
[0018] The bed provided in the second embodiment of the present application includes the wheelchair described in the technical solution of the first aspect, and thus has all the technical effects of the above embodiments, which will not be repeated here.
[0019] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.
[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of a wheelchair provided in an embodiment of the present application;
[0023] Figure 2 A schematic diagram of a portion of the structure of a wheelchair provided in an embodiment of the present application;
[0024] Figure 3 A schematic diagram of the partial structure of a wheelchair provided in an embodiment of the present application.
[0025] Reference numerals
[0026] 100, chair frame; 101, footboard; 102, legboard; 103, chair back; 104, chair seat; 105, connecting frame; 106, first push rod; 107, second push rod; 200, swing arm structure; 201, swing arm member; 202, first fixing frame; 203, second fixing frame; 204, fixing member; 205, first elastic member; 206, second elastic member; 300, wheels; 400, chair cushion; 500, brake structure. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0029] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0030] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0032] Example
[0033] Patients now need to go out for activities, or go back and forth between different examination rooms, etc. For patients with limited mobility, they can only leave the room or ward with the help of a wheelchair, but in the process of transferring the patient from the bed to the wheelchair, not only does it take a lot of manpower, but more importantly, it may cause secondary injuries to the patient.
[0034] Generally, wheelchair beds are divided into electric wheelchair beds and non-electric wheelchair beds. The wheelchair is equipped with wheels for the movement of the wheelchair. However, the wheels are mainly installed directly on the wheelchair, which does not have the effect of floating up and down. As a result, when the road conditions are poor, the wheels cannot fully touch the ground, and the ground contact between the wheels is not consistent.
[0035] In view of this, if Figure 1-Figure 3 As shown, in the first aspect, an embodiment of the present application provides a wheelchair, comprising: a chair body frame 100, which is provided with a first mounting end and a second mounting end along a first direction; a swing arm structure 200, comprising a first fixed end and a second fixed end, and a fulcrum is provided between the first fixed end and the second fixed end, and the fulcrum is connected to the first mounting end and / or the second mounting end; a plurality of wheels 300 are provided, and the wheels 300 are connected to the first fixed end and the second fixed end, so that the two wheels 300 connected to the same swing arm structure 200 swing around the fulcrum along the second direction, wherein the second direction is perpendicular to the first direction.
[0036] Exemplarily, the first mounting end is the front end, the second mounting end is the rear end, the swing arm structure 200 is configured at the first mounting end, the first direction includes but is not limited to the front and rear direction, the second direction includes but is not limited to the left and right direction, wherein the second direction is the direction in which the swing arm structure 200 swings with the second direction as the axis, that is, when the swing arm structure 200 takes the left and right direction as the axis, it can swing up and down; it should be noted that, in order to achieve the convenience of mobility of the wheelchair, the wheel 300 includes but is not limited to a universal wheel.
[0037] In the above-mentioned implementation process, the first mounting end and / or the second mounting end of the chair frame 100 is connected to the swing arm structure 200, and the first fixed end and the second fixed end of the swing arm structure 200 can swing around the fulcrum therebetween, so that when the wheels 300 are respectively installed at the first fixed end and the second fixed end, they can swing by relying on the swing arm structure 200, so that all the wheels 300 can touch the ground and receive force evenly, thereby ensuring the ground contact of the wheels 300.
[0038] like Figure 2-Figure 3As shown, the swing arm structure 200 includes a swing arm member 201 , a first fixing frame 202 and a second fixing frame 203 , the first fixing frame 202 and the second fixing frame 203 are both connected to the swing arm member 201 , and the first fixing frame 202 and the second fixing frame 203 are both configured to fix the wheel 300 .
[0039] Exemplarily, the swing arm 201 includes but is not limited to a swing rod, the fulcrum is arranged at the middle position of the swing arm 201, the structures of the first fixing frame 202 and the second fixing frame 203 can be arranged to be consistent, wherein the first fixing frame 202 and the second fixing frame 203 include but are not limited to a U-shaped frame, and the first fixing frame 202 and the second fixing frame 203 can be fixed to the swing arm 201 by welding or by detachable connection; of course, in order to meet some specific requirements, the first fixing frame 202 and the second fixing frame 203 can be designed differently according to requirements
[0040] In the above implementation process, the two ends of the swing arm 201 are connected to the first fixing frame 202 and the second fixing frame 203, wherein the first fixing frame 202 and the second fixing frame 203 are respectively used to install the wheels 300, so that the wheels 300 can swing by relying on the swing arm 201 after touching the ground, thereby ensuring that all wheels 300 touch the ground and are evenly stressed.
[0041] like Figure 3 As shown, the swing arm structure 200 also includes a fixing member 204, and the fixing member 204 includes but is not limited to a fixing bolt. The swing arm member 201 is provided with a fixing hole, and the fixing hole is arranged between the first fixing frame 202 and the second fixing frame 203, and the fixing member 204 is passed through the fixing hole.
[0042] In the above implementation process, the fixing member 204 is passed through the fixing hole on the swing arm member 201 to fix the swing arm member 201 to the chair body frame 100, which is beneficial to the swinging of the wheel 300 after the swing arm structure 200 is installed, ensuring the uniform force of the wheel 300.
[0043] In some embodiments, the side of the swing arm 201 close to the first fixing frame 202 and / or the side close to the second fixing frame 203 is elastically connected to the chair frame 100. By elastically connecting the swing arm 201 to the chair frame 100, it is possible to provide a buffer for the floating of the wheel 300, and at the same time, to a certain extent, the processing error of the chair frame 100 can also be eliminated.
[0044] Please refer to Figure 3The swing arm structure 200 further includes a first elastic member 205 and a second elastic member 206. The first elastic member 205 includes but is not limited to a spring, and the second elastic member 206 includes but is not limited to a spring. The first elastic member 205 and the second elastic member 206 are arranged to be distributed in the up-down direction. One end of the first elastic member 205 is connected to the swing arm member 201, and the other end thereof is connected to the chair body frame 100. One end of the second elastic member 206 is connected to the swing arm member 201, and the other end thereof is connected to the chair body frame 100. By elastically arranging the first elastic member 205 and the second elastic member 206 between the swing arm member 201 and the chair body frame 100, a buffer can be provided for the floating of the wheel 300, and at the same time, the processing error of the chair body frame 100 can be eliminated to a certain extent.
[0045] In some embodiments, the first mounting end of the chair body frame 100 is provided with a connecting frame 105, the connecting frame 105 is configured as a receiving cavity, the receiving cavity is configured for the swing arm structure 200 to pass through, and the connecting frame 105 is connected to the fixing member 204. Exemplarily, the connecting frame 105 is welded to the chair body frame 100, the connecting frame 105 is provided with a mounting opening communicating with the receiving cavity, the opening direction of the mounting opening is configured to face downward, and the mounting opening is conducive to placing or removing the swing arm structure 200 in the receiving cavity.
[0046] In some embodiments, the wheelchair further includes a brake structure 500, which is connected to the chair frame 100 to brake the wheel 300. Exemplarily, the brake structure 500 is disposed on the front side of the chair frame 100 to brake the front wheel 300 by friction, wherein the brake structure 500 is based on a parallelogram mechanism, and during braking, the parallelogram mechanism is in a self-locking dead point area.
[0047] In some embodiments, the chair frame 100 includes a chair body part and a chair seat 104, the chair body part is connected to the chair seat 104, and the chair body part is configured with a first form and a second form, wherein the first form includes a wheelchair form, and the second form includes a bed form, and the bed form is in a horizontal state.
[0048] In some embodiments, the chair frame 100 further includes a switching structure, and the switching structure is respectively connected to the chair body member and the chair body seat 104, so as to switch the chair body member to the first form or the second form.
[0049] Exemplarily, the chair body includes a leg board 102, a foot board 101 and a chair back 103, the leg board 102 is hinged to the foot board 101, and the foot board 101, the leg board 102 and the chair back 103 can use a hand controller to individually adjust the angles according to the usage scenario. For example, the adjustment angle of the chair back 103 is 0 to 80°, and the adjustment angle of the leg board 102 is 0 to 70°. The foot board 101 and the leg board 102 move simultaneously through a parallelogram mechanism, and the switching structure includes a push rod assembly, which includes a first push rod 106 and a second push rod 107. The first push rod 106 is configured to serve as a power source for the leg board 102, and the second push rod 107 is configured to serve as a power source for the chair back 103.
[0050] It is understandable that the chair frame 100 is provided with a seat cushion 400. If the seat cushion 400 is fixed on the chair frame 100, internal stress will inevitably be generated when the seat cushion 400 is compressed or stretched, causing the seat cushion 400 to deform or detach from the chair frame 100. In order to avoid such abnormal situations, the seat cushion 400 and the chair frame 100 are installed with sliding means. When the chair back 103 or the leg board 102 are raised or lowered, the seat cushion 400 will be compressed or stretched accordingly, and the contact surface between the seat cushion 400 and the chair frame 100 will have a relative sliding tendency, so that the seat cushion 400 remains flat.
[0051] In a second aspect, the present application also provides a bed, including the wheelchair as described above.
[0052] The bed provided in the second embodiment of the present application includes the wheelchair described in the technical solution of the first aspect, and thus has all the technical effects of the above embodiments, which will not be repeated here.
[0053] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.
[0054] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.
[0055] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0056] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A wheelchair, characterized in that: include: A chair body frame, which is provided with a first mounting end and a second mounting end along a first direction; A swing arm structure, comprising a first fixed end and a second fixed end, wherein a fulcrum is arranged between the first fixed end and the second fixed end, and the fulcrum is connected to the first mounting end and / or the second mounting end; A plurality of wheels are provided, wherein the wheels are connected to the first fixed end and the second fixed end so that the two wheels connected to the same swing arm structure swing around the fulcrum along a second direction, wherein the second direction is perpendicular to the first direction.
2. The wheelchair according to claim 1, characterized in that: The swing arm structure includes a swing arm member, a first fixing frame and a second fixing frame. The first fixing frame and the second fixing frame are both connected to the swing arm member, and the first fixing frame and the second fixing frame are both configured to fix the wheel.
3. The wheelchair according to claim 2, characterized in that: The swing arm structure also includes a fixing member, the swing arm member is provided with a fixing hole, the fixing hole is arranged between the first fixing frame and the second fixing frame, and the fixing member is passed through the fixing hole.
4. The wheelchair according to claim 2 or 3, characterized in that: The side of the swing arm member close to the first fixing frame and / or close to the second fixing frame is elastically connected to the chair body frame.
5. The wheelchair according to claim 4, characterized in that: The swing arm structure also includes a first elastic member and a second elastic member, wherein one end of the first elastic member is connected to the swing arm member and the other end thereof is connected to the chair body frame, and one end of the second elastic member is connected to the swing arm member and the other end thereof is connected to the chair body frame.
6. The wheelchair according to claim 3, characterized in that: The first mounting end of the chair body frame is provided with a connecting frame, the connecting frame is configured as a receiving cavity, the receiving cavity is configured for the penetration of the swing arm structure, and the connecting frame is connected to the fixing member.
7. The wheelchair according to claim 1 or 2, characterized in that: The wheelchair also includes a braking structure, which is connected to the chair body frame and is used to brake the wheels.
8. The wheelchair according to claim 1, characterized in that: The chair body frame includes a chair body part and a chair body seat, the chair body part is connected to the chair body seat, and the chair body part is configured with a first shape and a second shape.
9. The wheelchair according to claim 8, characterized in that: The chair body frame further includes a switching structure, and the switching structure is respectively connected to the chair body member and the chair body seat, so as to switch the chair body member to the first form or the second form.
10. A bed, characterized in that: Comprising a wheelchair as described in any one of claims 1-9.