Wheelchair easy to fold

Abstract

The utility model discloses a wheelchair easy to fold, which comprises a seat part, a backrest part, rollers and a driving source, the seat part comprises front support frames and rear support frames which are distributed in pairs, and the front support frames and the rear support frames which are distributed in pairs are respectively and correspondingly arranged; the front supporting frames distributed in pairs are connected through at least one lower connecting rod, a rear frame is arranged between the lower portions of the rear supporting frames distributed in pairs, the lower connecting rods are connected with the rear frame through a foldable bottom frame, and a stool frame is arranged on the upper portion between the front supporting frames and the rear supporting frames distributed in pairs. Upper connecting rods are arranged between the upper end faces of the corresponding front supporting frames and the corresponding rear supporting frames for connection, a control handle is arranged on one upper connecting rod, and the control handle is connected with the foldable bottom frame through a connecting line. According to the utility model, the operation is simpler, more convenient and easier, the use of a user is more facilitated, and the structure is more reasonable.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to an easily foldable wheelchair. Background Art

[0002] Known wheelchairs can be divided into motorized wheelchairs and hand-cranked wheelchairs according to the driving mode. The hand-cranked tricycle can adapt to various roads because of its large wheel diameter. It is mainly used as a means of transportation for long distances outdoors and can be properly loaded with goods. It has the characteristics of fast driving speed and labor saving. The motorized wheelchair is equipped with a backrest, handrails and seat belt limiters to keep the user's body stable, and has a short-distance hand movement device so that it can be manually moved to a safe or traffic-free area in case of failure. The current wheelchair has the problem of being inconvenient to fold and carry, so there is a Chinese utility model patent with authorization announcement number CN211797308U, which discloses a foldable electric hand-propelled wheelchair, including a folding frame, a seat cushion and an umbrella placement device. The umbrella placement device is arranged on the outside of the folding frame, and the outside of the folding frame is fixedly welded with a handle, and the side of the folding frame away from the handle is fixedly connected with a backrest, and the folding frame is movably connected with an handrail, and the two sides of the folding frame are movably connected with a first connecting rod. However, the existing wheelchairs are difficult to fold during operation, which is not convenient enough, and are also difficult to manufacture, which will inevitably increase the investment in manufacturing costs. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] 1. Technical issues that need to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an easily foldable wheelchair, which is not only simpler, more convenient and easier to operate, and more convenient for users to use, but also more reasonable in structure, which reduces the difficulty of production and manufacturing, and is also conducive to reducing production and manufacturing cost investment.

[0005] (II) Technical solutions that need to be adopted

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A wheelchair that can be easily folded comprises a seat part and a backrest part, wherein the lower part of the seat part is provided with rollers for rolling, and the rollers are connected to a driving source, and the driving source is arranged on the seat part, and the seat part comprises a front support frame and a rear support frame that are distributed in pairs, wherein the front support frames that are distributed in pairs are arranged correspondingly, and the rear support frames that are distributed in pairs are arranged correspondingly, and the front support frames that are distributed in pairs are connected by at least one lower connecting rod, and a rear frame is provided between the lower parts of the rear support frames that are distributed in pairs, and the lower connecting rod is connected to the rear frame by a foldable bottom frame, and the front support frames are connected to the rear frame by a foldable bottom frame. The support frame and the foldable bottom frame are both provided with the rollers, and the driving source is located on the foldable bottom frame, and a bench frame is provided at the upper part between the front support frame and the rear support frame distributed in pairs, the front support frame and the bench frame are movably connected, and an upper connecting rod is provided between the upper end surfaces of the corresponding front support frame and the rear support frame, the front support frame and the rear support frame are respectively movably connected to the upper connecting rod, and the rear support frame and the upper connecting rod are respectively movably connected to the backrest part, and a control handle is provided on one of the upper connecting rods, and the control handle is connected to the foldable bottom frame by a connecting line.

[0008] Preferably, the foldable bottom frame includes a front bottom frame arranged on the front support frame distributed in pairs and a rear bottom frame arranged on the rear frame, the front bottom frame is provided with at least one mounting hole, and the rear bottom frame is provided with at least one assembly hole, a fixing seat is installed coaxially with the assembly hole and the mounting hole, a pin is installed on the fixing seat, the pin is connected to the control handle through the connecting line, the pin is inserted into the assembly hole and the mounting hole to fix the rear frame and the rear bottom frame after unfolding, and the pin is disengaged from the assembly hole and the mounting hole to enable the rear frame and the rear bottom frame to be folded and stored.

[0009] Preferably, two lower connecting rods are used, the foldable bottom frame is arranged on the lowest lower connecting rod, and pedal mechanisms for placing feet are arranged on the two lower connecting rods. The pedal mechanism includes a pedal frame arranged on the two lower connecting rods, and a pedal is arranged on the pedal frame.

[0010] Preferably, the roller includes a front wheel arranged at the lower end of the front support frame and a rear wheel arranged at the lower end of the rear frame, and an auxiliary wheel is arranged on the rear frame close to the position of the rear wheel, the outer diameter of the auxiliary wheel is smaller than the outer diameter of the rear wheel, and the auxiliary wheel is located between the two rear wheels.

[0011] Preferably, a control panel for adjusting and controlling the driving source is provided on the other of the upper connecting rods, and the control panel is connected to the driving source.

[0012] Preferably, a seat surface is provided on the bench frame, and the backrest portion comprises a backrest frame movably provided on the rear support frame and the upper connecting rod, and a backrest is provided on the backrest frame.

[0013] Preferably, the front support frame, the rear support frame, the lower connecting rod, the rear frame, the foldable bottom frame, the bench frame and the backrest part are mainly composed of carbon fiber hollow tubes.

[0014] Preferably, each of the upper connecting rods is provided with an armrest plate.

[0015] (III) Technical effects to be achieved

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] First, the seat part of the utility model includes a front support frame and a rear support frame distributed in pairs, the front support frames distributed in pairs are arranged correspondingly, the rear support frames distributed in pairs are arranged correspondingly, the front support frames distributed in pairs are connected by at least one lower connecting rod, a rear frame is arranged between the lower parts of the rear support frames distributed in pairs, and the lower connecting rod and the rear frame are connected by a foldable bottom frame, the front support frames and the foldable bottom frame are both provided with rollers, and the driving source is located on the foldable bottom frame, and a bench frame is arranged on the upper part between the front support frames and the rear support frames distributed in pairs, and the front support frames are connected to the rear support frames by a lower connecting rod. The support frame is movably connected to the bench frame, and an upper connecting rod is arranged between the upper end surfaces of the corresponding front support frame and the rear support frame. The front support frame and the rear support frame are respectively movably connected to the upper connecting rod, and the rear support frame and the upper connecting rod are respectively movably connected to the backrest part. A control handle is arranged on one of the upper connecting rods, and the control handle is connected to the foldable bottom frame by a connecting line. It is not only simpler, more convenient and easier to operate, and more conducive to user convenience, but also more reasonable in structure, which reduces the difficulty of production and manufacturing, and is also conducive to reducing the investment in production and manufacturing costs.

[0018] Secondly, the foldable bottom frame of the utility model includes a front bottom frame arranged on the front support frame distributed in pairs and a rear bottom frame arranged on the rear frame, the front bottom frame is provided with at least one mounting hole, and the rear bottom frame is provided with at least one assembly hole, a fixing seat is installed on the coaxial center of the assembly hole and the mounting hole, a pin is installed on the fixing seat, the pin is connected to the control handle through a connecting line, the pin is inserted into the assembly hole and the mounting hole to fix the rear frame and the rear bottom frame after unfolding, and the pin is separated from the assembly hole and the mounting hole to fold and store the rear frame and the rear bottom frame. The setting structure of this foldable bottom frame is simpler, which is convenient for production and manufacturing, greatly reduces the cost investment of production and manufacturing, and is also convenient for mass production and manufacturing. At the same time, this operation is also extremely simple and convenient, which is more conducive to large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a front schematic diagram of the utility model.

[0021] Figure 3 It is a schematic diagram of the back side of the utility model.

[0022] Figure 4 It is a schematic diagram of the utility model when viewed from above.

[0023] Figure 5 It is a three-dimensional schematic diagram of the utility model.

[0024] Figure 6 for Figure 5 Schematic diagram of the local direction at point A in the middle.

[0025] Figure 7 It is an overall schematic diagram of the utility model.

[0026] Figure 8 for Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0027] In the figure: 1, seat part; 2, backrest part; 3, roller; 4, driving source; 5, pedal mechanism; 6, control panel; 11, front support frame; 12, rear support frame; 13, lower connecting rod; 14, rear frame; 15, foldable bottom frame; 16, bench frame; 17, upper connecting rod; 18, control handle; 19, connecting line; 31, front wheel; 32, rear wheel; 33, auxiliary wheel; 51, pedal frame; 52, pedal; 151, front base frame; 152, rear base frame; 153, fixed seat; 154, pin shaft; 171, armrest board. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0032] Example 1: See Figures 1 to 8, an easily foldable wheelchair comprises a seat portion 1 and a backrest portion 2, a roller 3 for rolling is arranged at the lower part of the seat portion 1, and the roller 3 is connected to a driving source 4, and the driving source 4 is arranged on the seat portion 1, and the seat portion 1 comprises a front support frame 11 and a rear support frame 12 distributed in pairs, the front support frames 11 distributed in pairs are arranged correspondingly, and the rear support frames 12 distributed in pairs are arranged correspondingly, such a configuration is reasonable and convenient for production and manufacturing, the front support frames 11 distributed in pairs are connected by at least one lower connecting rod 13, a rear frame 14 is arranged between the lower parts of the rear support frames 12 distributed in pairs, and the lower connecting rod 13 and the rear frame 14 are connected by a foldable bottom frame 15, the front support frames 11 and the foldable bottom frame 15 are both provided with rollers 3, and the driving source 4 is located on the foldable bottom frame 15, a bench frame 16 is arranged at the upper part between the front support frames 11 and the rear support frames 12 distributed in pairs, and the front support frames 11 and the bench frame 16 are movably connected The upper connecting rod 17 is connected to the upper end surface of the corresponding front support frame 11 and the rear support frame 12, and the front support frame 11 and the rear support frame 12 are respectively movably connected to the upper connecting rod 17, and the rear support frame 12 and the upper connecting rod 17 are respectively movably connected to the backrest part 2, and a control handle 18 is provided on one of the upper connecting rods 17, and the control handle 18 is connected to the foldable bottom frame 15 by a connecting line 19. The utility model can realize the folding of the foldable bottom frame 15 by controlling the control handle 18. First, the control handle 18 is controlled by hand, and the foldable bottom frame 15 can be folded by stepping on the foot. At this time, the utility model can be in a storage state and can be easily put into the trunk of a car for storage. When the seat part 1 and the backrest part 2 are pulled apart, the foldable bottom frame 15 can be dragged upward with a foot to realize the expansion of the utility model, which is convenient for normal use by users, and the operation is extremely simple and convenient, which is convenient for large-scale promotion and application.

[0033] Embodiment 2: It can be explained on the basis of embodiment 1, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the foldable bottom frame 15 includes a front bottom frame 151 arranged on the front support frame 11 distributed in pairs and a rear bottom frame 152 arranged on the rear frame 14, the front bottom frame 151 is provided with at least one mounting hole, and the rear bottom frame 152 is provided with at least one assembly hole, a fixing seat 153 is installed coaxially with the assembly hole and the mounting hole, a pin 154 is installed on the fixing seat 153, the pin 154 is connected to the control handle 18 through a connecting line 19, the pin 154 is inserted into the assembly hole and the mounting hole to fix the rear frame 14 and the rear bottom frame 152 after unfolding, and the pin 154 is separated from the assembly hole and the mounting hole to realize that the rear frame 14 and the rear bottom frame 152 can be folded and stored. This structure is not only simple in structure and easy to produce and manufacture, but also easy to operate and implement, and convenient for large-scale promotion and application.

[0034] In this embodiment, the front support frame 11 and the rear base frame 152 are both H-shaped, and two installation holes and assembly holes are provided on each side of the corresponding end faces of the H-shaped front support frame 11 and the rear base frame 152, so that the fixing seat 153 is installed on one of them, which can be selected for installation.

[0035] This embodiment adopts this method, which is not only simple to fold, but also uses the pin shaft 154 to prevent the front support frame 11 and the rear base frame 152 from being deformed due to the linkage due to bumps and vibrations during use, and can better meet the use requirements.

[0036] Embodiment 3: It can be described on the basis of Embodiment 1 or Embodiment 2, such as Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, two lower connecting rods 13 are used, and a foldable bottom frame 15 is provided on the lowest lower connecting rod 13, and pedal mechanisms 5 for placing feet are provided on the two lower connecting rods 13. The pedal mechanism 5 includes a pedal frame 51 provided on the two lower connecting rods 13, and a pedal 52 is provided on the pedal frame 51, and the user can place his foot on the pedal 52.

[0037] Embodiment 4: It can be described on the basis of Embodiment 1, Embodiment 2 or Embodiment 3, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the roller 3 includes a front wheel 31 arranged at the lower end of the front support frame 11 and a rear wheel 32 arranged at the lower end of the rear frame 14. In order to further improve the safety performance in use, an auxiliary wheel 33 is arranged on the rear frame 14 near the position of the rear wheel 32. The outer diameter of the auxiliary wheel 33 is smaller than the outer diameter of the rear wheel 32. The auxiliary wheel 33 is located between the two rear wheels 32, which can improve the driving stability of the scooter. After the scooter is folded and stored, the user can hold the backrest part 2 and roll on the ground through the auxiliary wheel 33, which is more labor-saving to carry. The rear wheels 32 are respectively connected to the driving source 4, and the opening and closing and rotation speed of the rear wheels 32 are controlled by the driving source 4. The driving source 4 is arranged on the rear frame 14, which reduces the occupied space and is more reasonably designed. It is to be noted that a motor is used for the driving source 4, which is convenient for implementation. It is also to be noted that a control panel 6 for adjusting and controlling the driving source 4 is arranged on another upper connecting rod 17, and the control panel 6 is connected to the driving source 4, which is convenient for user control.

[0038] Embodiment 5: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the bench frame 16 is provided with a seat surface (not shown in the figure), and this structure is easy to implement. The backrest part 2 includes a backrest frame movably provided on the rear support frame 12 and the upper connecting rod 17, and a backrest is provided on the backrest frame, which is easy to implement. A push handle (not shown in the figure) is provided on the backrest frame, which is convenient for the user to push and use, making it more convenient and easy to use.

[0039] Embodiment 6: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 or Embodiment 5, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the front support frame 11, the rear support frame 12, the lower connecting rod 13, the rear frame 14, the foldable bottom frame 15, the bench frame 16 and the backrest part 2 are mainly composed of carbon fiber hollow tubes, which is conducive to greatly reducing the overall weight, and is convenient for users to carry after storage, and is also convenient for transportation and movement. It is worth noting that in the present utility model, reinforced glass fiber nylon material is used for the interconnections and stainless steel rivets are used for connection, which achieves the characteristics of being strong and durable while being light and flexible, such as between the front support frame 11 and the lower connecting rod 13 distributed in pairs, between the lower part of the rear support frame 12 and the rear frame 14 distributed in pairs, between the lower connecting rod 13 and the foldable bottom frame 15, and between the backrest part 2 and the rear support frame 12 and the upper connecting rod 17. It should be noted that the movable connections between the front support frame 11 and the seat frame 16, between the front support frame 11 and the rear support frame 12 and the upper connecting rod 17, and between the rear support frame 12 and the upper connecting rod 17 and the backrest part 2 can all be connected by screws and gaskets, which facilitates rotation therein.

[0040] Embodiment 7: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 or Embodiment 5 or Embodiment 6, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the upper connecting rod 17 is provided with an armrest plate 171, which is conducive to the placement of the user's hands during use and is more conducive to meeting the use requirements.

[0041] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt conventional means such as mature bolts and rivets in the prior art. The control panel and internal components of the motor all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0042] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. An easily foldable wheelchair, comprising a seat portion (1) and a backrest portion (2), wherein a roller (3) for rolling is arranged at the lower portion of the seat portion (1), and the roller (3) is connected to a driving source (4), and the driving source (4) is arranged on the seat portion (1), characterized in that: The seat part (1) comprises a front support frame (11) and a rear support frame (12) which are arranged in pairs. The front support frames (11) which are arranged in pairs are arranged in correspondence with each other. The rear support frames (12) which are arranged in pairs are arranged in correspondence with each other. The front support frames (11) which are arranged in pairs are connected by at least one lower connecting rod (13). A rear frame (14) is arranged between the lower parts of the rear support frames (12) which are arranged in pairs. The lower connecting rod (13) and the rear frame (14) are connected by a foldable bottom frame (15). The front support frames (11) and the foldable bottom frame (15) are both provided with the rollers (3). The driving source (4) is located on the foldable bottom frame (15). A bench frame (16) is arranged at the upper part between the front support frame (11) and the rear support frame (12); the front support frame (11) and the bench frame (16) are movably connected; an upper connecting rod (17) is arranged between the upper end surfaces of the corresponding front support frame (11) and the rear support frame (12); the front support frame (11) and the rear support frame (12) are movably connected to the upper connecting rod (17) respectively; the rear support frame (12) and the upper connecting rod (17) are movably connected to the backrest part (2) respectively; a control handle (18) is arranged on one of the upper connecting rods (17); the control handle (18) is connected to the foldable bottom frame (15) via a connecting line (19).

2. The easily foldable wheelchair according to claim 1, characterized in that: The foldable bottom frame (15) comprises a front bottom frame (151) arranged on the front support frame (11) and a rear bottom frame (152) arranged on the rear frame (14), the front bottom frame (151) being provided with at least one mounting hole, and the rear bottom frame (152) being provided with at least one assembly hole, a fixing seat (153) being installed coaxially with the assembly hole and the mounting hole, a pin shaft (154) being installed on the fixing seat (153), the pin shaft (154) being connected to the control handle (18) via the connecting line (19), the pin shaft (154) being inserted into the assembly hole and the mounting hole to realize fixing the rear frame (14) and the rear bottom frame (152) after unfolding, and the pin shaft (154) being separated from the assembly hole and the mounting hole to realize folding and storing the rear frame (14) and the rear bottom frame (152).

3. The easily foldable wheelchair according to claim 1 or 2, characterized in that: Two lower connecting rods (13) are used, and the foldable bottom frame (15) is arranged on the lowest lower connecting rod (13). Pedal mechanisms (5) for placing feet are arranged on the two lower connecting rods (13). The pedal mechanism (5) includes a pedal frame (51) arranged on the two lower connecting rods (13), and a pedal (52) is arranged on the pedal frame (51).

4. The easily foldable wheelchair according to claim 1 or 2, characterized in that: The roller (3) comprises a front wheel (31) arranged at the lower end of the front support frame (11) and a rear wheel (32) arranged at the lower end of the rear frame (14), and an auxiliary wheel (33) is arranged on the rear frame (14) near the position of the rear wheel (32), the outer diameter of the auxiliary wheel (33) is smaller than the outer diameter of the rear wheel (32), and the auxiliary wheel (33) is located between the two rear wheels (32).

5. The easily foldable wheelchair according to claim 4, characterized in that: A control panel (6) for adjusting and controlling the driving source (4) is arranged on the other upper connecting rod (17), and the control panel (6) is connected to the driving source (4).

6. The easily foldable wheelchair according to claim 1, 2 or 5, characterized in that: The bench frame (16) is provided with a seat surface, and the backrest part (2) comprises a backrest frame movably arranged on the rear support frame (12) and the upper connecting rod (17), and a backrest is arranged on the backrest frame.

7. The easily foldable wheelchair according to claim 1, 2 or 5, characterized in that: The front support frame (11), the rear support frame (12), the lower connecting rod (13), the rear frame (14), the foldable bottom frame (15), the bench frame (16) and the backrest part (2) are mainly composed of carbon fiber hollow tubes.

8. The easily foldable wheelchair according to claim 1, 2 or 5, characterized in that: The upper connecting rods (17) are each provided with an armrest plate (171).

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