Three-stage damping medical wheelchair

Abstract

The utility model discloses a three-stage shock absorption medical wheelchair, which comprises a vehicle body frame, four roller mechanisms, a first shock absorber, a seat body and a second shock absorber, the four roller mechanisms are respectively arranged on two sides of the front part of the vehicle body frame and two sides of the rear part of the vehicle body frame, and each roller mechanism is rotatably connected with the vehicle body frame up and down; a rolling wheel of each roller mechanism adopts a honeycomb shock-proof wheel; two ends of the first shock absorber are rotationally connected with the vehicle body frame and the roller mechanism respectively; the seat body is vertically arranged on the vehicle body frame in a sliding manner; one end of the second shock absorber is connected with the vehicle body frame, and the other end of the second shock absorber is connected with the seat body. In the application process of the medical wheelchair, the honeycomb shock absorption wheels, the first shock absorbers and the second shock absorbers are used in cooperation, so that the medical wheelchair is endowed with a three-stage shock absorption effect, that is, shock absorption is conducted on the seat body step by step when the medical wheelchair is used, and even if the medical wheelchair is used for a patient with a serious illness condition, the comfort of the patient when the medical wheelchair is applied is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a three-level shock-absorbing medical wheelchair. Background Art

[0002] Medical wheelchairs are a common type of medical equipment. Patients with walking difficulties often require the aid of a medical wheelchair. This is especially true for automatic medical wheelchairs, which can be used by the patient's drive system to automatically propel the wheelchair even without family members, allowing the patient to complete physical examinations and other activities independently.

[0003] In the prior art, to achieve shock absorption in medical wheelchairs, the roller mechanism of the medical device is typically rotatably mounted on the body of the medical device, with a shock absorber rotatably mounted between the roller mechanism and the body of the medical device. However, for patients with more serious conditions, the shock absorption effect of such medical wheelchairs is poor, resulting in poor patient comfort. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention proposes a three-level shock-absorbing medical wheelchair to improve the comfort of patients when using it.

[0005] The present application provides a three-level shock-absorbing medical wheelchair, comprising:

[0006] body frame;

[0007] Four roller mechanisms are respectively arranged on both sides of the front portion of the vehicle body frame and on both sides of the rear portion of the vehicle body frame, each of the roller mechanisms is connected to the vehicle body frame for vertical rotation, and the rolling wheels of each roller mechanism are honeycomb shock-absorbing wheels;

[0008] a first shock absorber, wherein two ends of the first shock absorber are rotatably connected to the vehicle body frame and the roller mechanism respectively;

[0009] A seat body is vertically slidably arranged on the vehicle body frame;

[0010] A second shock absorber, one end of the second shock absorber is connected to the top of the vehicle body frame, and the other end of the second shock absorber is connected to the bottom of the seat body.

[0011] According to some embodiments of the present invention, the roller mechanism includes:

[0012] a first cantilever, one end of the first cantilever being rotatably connected to a lower portion of the vehicle body frame;

[0013] a second cantilever, one end of the second cantilever being rotatably connected to the upper portion of the vehicle body frame;

[0014] A connecting base, wherein the other end of the first cantilever is rotatably connected to the lower portion of the connecting base, and the other end of the second cantilever is rotatably connected to the upper portion of the connecting base;

[0015] A rolling wheel, rotatably connected to the connecting seat;

[0016] Two ends of the first shock absorber are rotatably connected to the first cantilever and the vehicle body frame respectively.

[0017] According to some embodiments of the present invention, the roller mechanism further includes:

[0018] a transmission shaft extending along the width direction of the vehicle body frame and located between the first cantilever and the second cantilever, the transmission shaft being rotatably connected to the vehicle body frame;

[0019] Transmission joint, the end of the transmission shaft is universally connected to one end of the transmission joint and can drive the transmission joint to rotate synchronously, the connecting seat is rotatably arranged on the outside of the transmission joint, and the rolling wheel is connected to the transmission joint.

[0020] According to some embodiments of the present invention, the medical wheelchair further includes a driving component, which is disposed on the body frame and is used to drive the transmission shaft to rotate.

[0021] According to some embodiments of the present invention, the first shock absorber is an electromagnetic shock absorber or a gas spring.

[0022] According to some embodiments of the present invention, the second shock absorber is a gas spring.

[0023] According to some embodiments of the present invention, guide seats are respectively provided at the front and rear positions of the top of the vehicle body frame, and guide rods are respectively provided at the front and rear positions of the bottom of the seat body, the guide rods are respectively slidably provided on the guide seats, and one end of the first shock absorber is rotatably connected to the side of the guide seat.

[0024] According to some embodiments of the present invention, the medical wheelchair further includes an auxiliary mechanism, and the auxiliary mechanism includes:

[0025] An extension bracket is connected to the vehicle body frame or the seat body and extends toward the front of the three-level shock-absorbing medical wheelchair;

[0026] a first linking member, one end of which is rotatably connected to the extension bracket;

[0027] an auxiliary wheel, rotatably connected to the first linkage member;

[0028] A third shock absorber, two ends of which are rotatably connected to the extension bracket and the first linking member respectively.

[0029] According to some embodiments of the present invention, the auxiliary mechanism further includes:

[0030] a second linking member, one end of which is rotatably connected to the other end of the first linking member;

[0031] The third linking member has one end rotatably connected to the other end of the second linking member, and the other end rotatably connected to the extension bracket.

[0032] According to some embodiments of the present invention, the third shock absorber is an electromagnetic shock absorber or a gas spring.

[0033] As can be seen from the above technical solutions, the embodiments of the present application have the following advantages: the rolling wheel adopts a honeycomb shock-absorbing wheel, thereby the roller mechanism itself has a shock-absorbing effect when in use; a first shock absorber is provided between the roller mechanism and the vehicle body frame, thereby the first shock absorber also has a shock-absorbing effect between the roller structure and the vehicle body frame; and the seat body and the vehicle body frame are connected via a second shock absorber, thereby the second shock absorber also has a shock-absorbing effect between the seat body and the vehicle body frame. Therefore, during the use of the medical wheelchair, the honeycomb shock-absorbing wheel, the first shock absorber, and the second shock absorber cooperate to provide the medical wheelchair with a three-level shock-absorbing effect, that is, the medical wheelchair gradually reduces the shock of the seat body during use, ensuring the patient's comfort when using the medical wheelchair even for patients with more serious conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a medical wheelchair according to an embodiment of the present utility model;

[0035] Figure 2 This is a schematic diagram of the exploded structure of the medical wheelchair according to an embodiment of the present utility model;

[0036] Figure 3 This is a schematic structural diagram of the roller mechanism according to an embodiment of the present utility model;

[0037] Figure 4 This is a structural diagram of the auxiliary mechanism of an embodiment of the utility model.

[0038] The meanings of the reference numerals are as follows:

[0039] 100. Vehicle body frame; 110. Guide seat; 200. Roller mechanism; 210. First cantilever; 220. Second cantilever; 230. Drive shaft; 240. Connecting seat; 250. Rolling wheel; 260. Transmission joint; 300. Seat body; 310. Guide rod; 400. First shock absorber; 500. Second shock absorber; 600. Auxiliary mechanism; 610. Extension bracket; 620. First link; 630. Second link; 640. Third link; 650. Third shock absorber; 660. Auxiliary wheel. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, upper, lower, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0045] The present invention will be further described in detail below with reference to the accompanying drawings.

[0046] See also Figures 1 to 2 , a three-level shock-absorbing medical wheelchair provided by an embodiment of the utility model includes a body frame 100, four roller mechanisms 200, a first shock absorber 400, a seat body 300 and a second shock absorber 500, wherein the four roller mechanisms 200 are respectively arranged on both sides of the front of the body frame 100 and on both sides of the rear of the body frame 100, each roller mechanism 200 is connected to the body frame 100 for vertical rotation, and the rolling wheel 250 of each roller mechanism 200 adopts a honeycomb shock-absorbing wheel; the two ends of the first shock absorber 400 are respectively connected to the body frame 100 and the roller mechanism 200 for rotation; the seat body 300 is vertically slidably arranged on the body frame 100; one end of the second shock absorber 500 is connected to the top of the body frame 100, and the other end of the second shock absorber 500 is connected to the bottom of the seat body 300.

[0047] The first shock absorber 400 may be an electromagnetic shock absorber or a gas spring, and the second shock absorber 500 may be a gas spring.

[0048] It is understood that the rolling wheel 250 utilizes a honeycomb shock-absorbing wheel, thereby providing the roller mechanism 200 with a shock-absorbing effect during use. A first shock absorber 400 is provided between the roller mechanism 200 and the vehicle body frame, thereby also providing a shock-absorbing effect between the roller mechanism and the vehicle body frame 100. Furthermore, the seat body 300 is connected to the vehicle body frame 100 via a second shock absorber 500, thereby also providing a shock-absorbing effect between the seat body 300 and the vehicle body frame 100. Therefore, the coordinated use of the honeycomb shock-absorbing wheel, the first shock absorber 400, and the second shock absorber 500 provides a three-level shock-absorbing effect during use of the medical wheelchair. That is, the medical wheelchair provides a step-by-step shock absorption effect on the seat body 300 during use, ensuring patient comfort even for patients with more serious medical conditions.

[0049] It should be noted that the first shock absorber 400 adopts an electromagnetic shock absorber, and the control system can control the working voltage of the electromagnetic shock absorber, thereby controlling the shock absorbing effect of the first shock absorber 400, thereby keeping the medical wheelchair in a balanced state as much as possible, and improving the patient's comfort when using the medical wheelchair.

[0050] In some embodiments, reference Figure 2 and Figure 3 The roller mechanism 200 includes a first cantilever 210, a second cantilever 220, a connecting base 240, and a rolling wheel 250. One end of the first cantilever 210 is rotatably connected to the lower portion of the vehicle body frame 100, while one end of the second cantilever 220 is rotatably connected to the upper portion of the vehicle body frame 100. The first cantilever 210 and the second cantilever 220 are arranged substantially parallel to each other. The other end of the first cantilever 210 is rotatably connected to the lower portion of the connecting base 240, while the other end of the second cantilever 220 is rotatably connected to the upper portion of the connecting base 240. Thus, the vehicle body frame 100, the first cantilever 210, the second cantilever 220, and the connecting base 240 form a parallelogram connecting rod structure. One end of the first shock absorber 400 is rotatably connected to the middle of the length of the first cantilever 210, and the other end is rotatably connected to the top of the vehicle body frame 100. The rolling wheel 250 is rotatably connected to the connecting base 240.

[0051] It will be appreciated that the vehicle body frame 100, the first cantilever 210, the second cantilever 220, and the connecting base 240 constitute a parallelogram linkage structure. Therefore, the rolling wheel 250 is mounted on the side of the vehicle body frame 100 for vertical rotation via the parallelogram linkage structure. Furthermore, the first shock absorber 400 restricts deformation of the parallelogram linkage structure, thereby providing a strong shock-absorbing effect between the roller mechanism 200 and the vehicle body frame 100. This arrangement ensures that the overall structure of the roller mechanism 200 is relatively stable during use and provides a strong shock-absorbing effect.

[0052] In a further embodiment, the roller mechanism 200 further includes a transmission shaft 230 and a transmission joint 260. The transmission shaft 230 extends along the width of the vehicle body frame 100 and is positioned between the first cantilever 210 and the second cantilever 220. The transmission shaft 230 is rotatably connected to the vehicle body frame 100. A connecting base 240 is rotatably disposed outside the transmission joint 260, or in other words, the transmission joint 260 is rotatably disposed through the connecting base 240. The end of the transmission shaft 230 away from the vehicle body frame 100 is universally movably connected to one end of the transmission joint 260, and is capable of driving the transmission joint 260 to rotate synchronously. For example, the ends of the transmission shaft 230 and the transmission joint 260 are connected via a Hooke's hinge structure. The rolling wheel 250 is connected to the end of the transmission joint 260 away from the transmission shaft 230.

[0053] It will be appreciated that the rolling wheel 250 is connected to the transmission joint 260, which is in turn connected to the transmission shaft 230. Thus, the rolling wheel 250 is rotationally connected to the vehicle body frame 100 via the transmission shaft 230, allowing for stable rolling along the road surface. Furthermore, the vehicle body frame 100, the first cantilever 210, the second cantilever 220, and the connecting base 240 are sequentially connected, forming a parallelogram linkage structure. The connecting base 240 is rotatably mounted on the transmission joint 260. Thus, the rolling wheel 250 is rotatably connected to the side of the vehicle body frame 100 via the parallelogram linkage structure. The connecting base 240 is rotationally connected to the transmission joint 260, and the rolling wheel 250 is universally connected to the transmission shaft 230 via the transmission joint 260. Consequently, the transmission joint 260 and the parallelogram linkage structure do not interfere with each other, allowing the rolling wheel 250 to swing stably up and down while rolling on the road surface, providing a stable shock-absorbing effect.

[0054] In some embodiments, the three-stage shock-absorbing medical wheel further includes a drive member (not shown) disposed on the vehicle frame 100 and configured to drive the transmission shaft 230 for rotation. It is understood that two drive members are typically provided, each driving the two rearward rolling wheels 250 via the transmission shaft 230, thereby enabling the medical wheelchair to automatically move on the ground without requiring manual effort. Alternatively, four drive members may be provided, each driving the front and rear rolling wheels 250 via the transmission shaft 230.

[0055] In some embodiments, reference Figure 2 and Figure 3 Guide seats 110 are respectively provided at the front and rear positions of the top of the vehicle body frame 100, and guide rods 310 are respectively provided at the front and rear positions of the bottom of the seat body 300. The guide rods 310 are slidably mounted on the guide seats 110, and the second shock absorber 500 is vertically positioned between the two guide seats 110. As a result, the seat body 300 is stably and vertically slidably connected to the vehicle body frame 100, allowing the second shock absorber 500 to provide stable shock-absorbing support for the seat body 300. Simultaneously, one end of the first shock absorber 400 is rotatably connected to the side of the guide seat 110. As can be seen, the guide seat 110 also facilitates the installation of the first shock absorber 400.

[0056] In some embodiments, reference Figure 1 and Figure 4The medical wheelchair also includes an auxiliary mechanism 600, which includes an extension bracket 610, a first link 620, a second link 630, a third link 640, a third shock absorber 650 and an auxiliary wheel 660, wherein the extension bracket 610 is connected to the vehicle body frame 100 or the seat body 300 and extends toward the front of the medical wheelchair, one end of the first link 620 is rotatably connected to the extension bracket 610; the auxiliary wheel 660 is rotatably connected to the other end of the first link 620; one end of the third shock absorber 650 is rotatably connected to the side of the first link 620, and the other end of the third shock absorber 650 is rotatably connected to the extension bracket 610; one end of the second link 630 is rotatably connected to the other end of the first link 620; one end of the third link 640 is rotatably connected to the other end of the second link 630, and the other end is rotatably connected to the extension bracket 610.

[0057] The third shock absorber 650 may be an electromagnetic shock absorber or a gas spring, both of which have a large elastic deformation force.

[0058] It is understood that the auxiliary wheels 660 are elastically rotatably connected to the front side of the medical wheelchair via the third shock absorber 650. This arrangement allows the auxiliary wheels 660 to absorb shock when colliding with obstacles ahead, such as steps, thereby preventing significant vibrations in the seat body 300 and ensuring patient comfort. Furthermore, the auxiliary wheels 660 can flexibly change position when assisting the medical wheelchair in navigating obstacles, ensuring smoother traversal.

[0059] In addition, the extension bracket 610, the first link 620, the second link 630 and the third link 640 form a parallelogram linkage structure, and the auxiliary wheel 660 is equivalent to being rotatably arranged on the front side of the medical wheelchair through the parallelogram linkage structure. With this arrangement, the auxiliary wheel 660 is more stable when in use, so as to assist the medical wheelchair in overcoming obstacles.

[0060] Furthermore, if the third shock absorber 650 utilizes an electromagnetic shock absorber, the control system controls the operating voltage of the third shock absorber 650 during the process of ascending stairs, causing the other end of the third shock absorber 650 to extend or contract. For example, when the other end of the third shock absorber 650 extends, the second linkage 630 rotates upward, thereby driving the auxiliary wheels 660 upward, thus assisting the medical wheelchair in climbing higher stairs. Conversely, when the other end of the third shock absorber 650 contracts, the second linkage 630 rotates downward, thereby driving the auxiliary wheels 660 downward, thus assisting the medical wheelchair in climbing lower stairs. Simultaneously, by controlling the up and down swinging of the auxiliary wheels 660, the third shock absorber 650 effectively reduces the vibration effect of the ground on the auxiliary wheels 660.

[0061] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A three-level shock-absorbing medical wheelchair, characterized in that: include: body frame; Four roller mechanisms are respectively arranged on both sides of the front portion of the vehicle body frame and on both sides of the rear portion of the vehicle body frame, each of the roller mechanisms is connected to the vehicle body frame for vertical rotation, and the rolling wheels of each roller mechanism are honeycomb shock-absorbing wheels; a first shock absorber, wherein two ends of the first shock absorber are rotatably connected to the vehicle body frame and the roller mechanism respectively; A seat body is vertically slidably arranged on the vehicle body frame; A second shock absorber, one end of the second shock absorber is connected to the top of the vehicle body frame, and the other end of the second shock absorber is connected to the bottom of the seat body.

2. The three-stage shock absorption medical wheelchair according to claim 1, characterized in that: The roller mechanism comprises: a first cantilever, one end of the first cantilever being rotatably connected to a lower portion of the vehicle body frame; a second cantilever, one end of the second cantilever being rotatably connected to the upper portion of the vehicle body frame; A connecting base, wherein the other end of the first cantilever is rotatably connected to the lower portion of the connecting base, and the other end of the second cantilever is rotatably connected to the upper portion of the connecting base; A rolling wheel, rotatably connected to the connecting seat; Two ends of the first shock absorber are rotatably connected to the first cantilever and the vehicle body frame respectively.

3. The three-stage shock-absorbing medical wheelchair according to claim 2, characterized in that: The roller mechanism also includes: a transmission shaft extending along the width direction of the vehicle body frame and located between the first cantilever and the second cantilever, the transmission shaft being rotatably connected to the vehicle body frame; Transmission joint, the end of the transmission shaft is universally connected to one end of the transmission joint and can drive the transmission joint to rotate synchronously, the connecting seat is rotatably arranged on the outside of the transmission joint, and the rolling wheel is connected to the transmission joint.

4. The three-stage shock absorption medical wheelchair according to claim 3, characterized in that: The medical wheelchair further includes a driving component, which is arranged on the body frame and is used to drive the transmission shaft to rotate.

5. The three-stage shock absorption medical wheelchair according to claim 1, characterized in that: The first shock absorber is an electromagnetic shock absorber or a gas spring.

6. The three-stage shock absorption medical wheelchair according to claim 1, characterized in that: The second shock absorber is a gas spring.

7. The three-stage shock absorption medical wheelchair according to claim 1, characterized in that: Guide seats are respectively provided at the front and rear positions of the top of the vehicle body frame, and guide rods are respectively provided at the front and rear positions of the bottom of the seat body. The guide rods are respectively slidably provided on the guide seats, and one end of the first shock absorber is rotatably connected to the side of the guide seat.

8. The three-stage shock absorption medical wheelchair according to claim 1, characterized in that: The medical wheelchair further includes an auxiliary mechanism, which includes: An extension bracket is connected to the vehicle body frame or the seat body and extends toward the front of the three-level shock-absorbing medical wheelchair; a first linking member, one end of which is rotatably connected to the extension bracket; an auxiliary wheel, rotatably connected to the first linkage member; A third shock absorber, two ends of which are rotatably connected to the extension bracket and the first linking member respectively.

9. The three-stage shock absorption medical wheelchair according to claim 8, characterized in that: The auxiliary mechanism also includes: a second linking member, one end of which is rotatably connected to the other end of the first linking member; The third linking member has one end rotatably connected to the other end of the second linking member, and the other end rotatably connected to the extension bracket.

10. The three-level shock absorption medical wheelchair according to claim 8, characterized in that: The third shock absorber is an electromagnetic shock absorber or a gas spring.

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