Electric wheelchair convenient to fold

Abstract

The electric wheelchair convenient to fold comprises a supporting frame, a bottom frame, a chair back frame and a locking assembly, and the supporting frame, the bottom frame and the chair back frame are rotationally connected with one another; the bottom frame comprises a group of fork arms and a rotating shaft, and hinge lugs are arranged on the fork arms; one end of the rotating shaft is connected with the hinge lug, the other end of the rotating shaft is connected with the chair back frame, and the supporting frame is rotationally connected with the rotating shaft shell; the locking assembly comprises a pull rod, a set of locking blocks and a locking groove, the two ends of the pull rod are connected with the locking blocks, the locking groove is formed in the fork arm, and the locking blocks can be embedded into the locking groove. According to the electric wheelchair convenient to fold, when the locking blocks are clamped in the locking grooves, the bottom frame, the chair back frame and the supporting frame can be locked, a user can normally use the electric wheelchair, when the electric wheelchair is folded, the locking blocks are pulled out of the locking grooves only by pulling the pull rods, unlocking can be achieved, folding is completed, the structure is simple and compact, and folding is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric wheelchair, in particular to a folding electric wheelchair. BACKGROUND

[0002] Electric wheelchair is a kind of walking aid designed for the action inconvenient (such as old people, disabled people etc.), and there is great difference compared with traditional manual wheelchair.Traditional manual wheelchair relies on human power to push, and electric wheelchair has intelligent control controller, usually installs control device on armrest to realize the movement of wheelchair, instead of manual power push.It is widely applicable, as long as the user's consciousness is clear, cognitive ability is normal and has certain activity space.

[0003] But electric wheelchair is compared with traditional wheelchair, and its volume weight is greater, when not using or using transport tool, user more wishes that it can be stored to save space area, the existing electric wheelchair is designed into foldable type for easy storage, but its folding process is more cumbersome, needs to operate multiple components more cumbersome.Based on this, it is necessary to provide a folding electric wheelchair to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a folding electric wheelchair, which is simple, compact and easy to fold.

[0005] To achieve the above object and other related objects, the utility model provides the following technical scheme:

[0006] A folding electric wheelchair, comprising a support frame, a chassis, a backrest frame and a locking assembly, the support frame, the chassis and the backrest frame are rotatably connected to each other; the chassis comprises a set of fork arms and a rotating shaft, the fork arms are provided with hinge ears; one end of the rotating shaft is connected to the hinge ears, and the other end is connected to the backrest frame; the support frame is rotatably connected to the rotating shaft shell; the locking assembly comprises a pull rod, a set of locking blocks and locking grooves, the two ends of the pull rod are connected to the locking blocks, the locking grooves are provided on the fork arms, and the locking blocks can be embedded in the locking grooves.

[0007] Further, the locking block comprises a locking rod, and one end of the locking rod abuts against the fork arm; the rotating shaft comprises a core rod and a shaft sleeve, the core rod is connected to the backrest frame, and the shaft sleeve is sleeved on the core rod.

[0008] Further, a sliding groove is arranged in the shaft sleeve, the upper part of the locking block is movably accommodated in the sliding groove, and the side surface of the locking block is provided with a transverse sliding rod, and the sliding rod is matched with the sliding groove.

[0009] Further, the two ends of the pull rod are rotatably connected to the locking blocks, and the pull rod is two-section type and hinged at the middle position.

[0010] Further, the front end of the fork arm is provided with a support beam, the side of the support frame is provided with a connecting rod, the connecting rod is rotationally connected with the shaft sleeve, the bottom surface of the support frame is provided with a group of support rods, and two ends of the support rod are rotationally connected with the support frame and the support beam respectively.

[0011] Further, the chair back is arranged on the chair back frame, the cushion is arranged on the support frame, the foot pedal and the universal wheel are arranged at the front end of the fork arm, and the power wheel and the power source are arranged at the rear end of the fork arm.

[0012] Further, one end of the core rod is connected with a group of armrests, and the control handle is arranged on the armrest.

[0013] As described above, the utility model discloses a kind of electric wheelchair of folding conveniently, with following beneficial effects:

[0014] 1, the utility model provides a kind of electric wheelchair of folding conveniently, compact structure, simple, only using a group of lock block is completed locking, when needing folding, only need to be unlocked by pulling rod and lock block, immediately folding of entire wheelchair can be realized, simple and efficient operation. DRAWINGS

[0015] Figure 1 It shows the structure schematic diagram of a kind of electric wheelchair of folding conveniently in the utility model.

[0016] Figure 2 It shows the rear view of a kind of electric wheelchair of folding conveniently in the utility model.

[0017] Figure 3 It shows the front view of a kind of electric wheelchair of folding conveniently in the utility model.

[0018] Figure 4 It shows the assembly schematic diagram of lock block and lock slot in the utility model Figure 3 Sectional view along A-A line.

[0019] Figure 5 It shows the assembly schematic diagram of lock block and lock slot in the utility model Figure 4 Enlarged schematic diagram of part B.

[0020] Figure 6 It shows the assembly schematic diagram of lock block and lock slot in the utility model.

[0021] Wherein, 1, support frame;11, connecting rod;12, support rod;2, bottom frame;21, fork arm;211, hinged lug;212, support beam;213, power source;22, rotating shaft;221, core rod;222, shaft sleeve;223, sliding groove;224, armrest;225, control handle;3, chair back frame;4, locking assembly;41, pull rod;42, lock block;421, lock rod;43, lock slot;1000, a kind of electric wheelchair of folding conveniently. DETAILED DESCRIPTION

[0022] The implementation of the present application will be described by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0023] Please refer to Figures 1-6 It should be understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0024] Please refer to Figures 1 to 6 The present application provides a folding electric wheelchair 1000, which comprises a support frame 1, a bottom frame 2, a back frame 3 and a locking assembly 4, the support frame 1, the bottom frame 2 and the back frame 3 are rotatably connected to each other;

[0025] The bottom frame 2 comprises a set of fork arms 21 and a rotating shaft 22, and the fork arms 21 are provided with hinge ears 211;

[0026] One end of the rotating shaft 22 is connected with the hinge ears 211, and the other end is connected with the back frame 3, and the support frame 1 is rotatably connected with the rotating shaft 22;

[0027] The locking assembly 4 comprises a pull rod 41, a set of locking blocks 42 and a locking groove 43, both ends of the pull rod 41 are connected with the locking blocks 42, the locking groove 43 is provided on the fork arms 21, and the locking blocks 42 can be embedded in the locking groove 43.

[0028] Among them, the locking block 42 comprises a locking rod 421, the locking rod 421 can abut with one end of the fork arm 21, the rotating shaft 22 comprises a core rod 221 and a shaft sleeve 222, the core rod 221 is connected with the back frame 3, and the shaft sleeve 222 is sleeved on the core rod 221.

[0029] In a preferred embodiment, a soft sleeve is sleeved on the locking rod 421 to avoid hard contact with the fork arm 21 and damage the surface.

[0030] The shaft sleeve 222 is internally provided with a sliding groove 223, the upper portion of the locking block 42 is slidably accommodated in the sliding groove 223, the side surface of the locking block 42 is provided with a transverse sliding rod, and the sliding rod is matched with the sliding groove 223. When the user pushes and pulls the pull rod 41, the locking block 42 can be moved in the sliding groove 223, so that the unlocking or the accurate clamping of the locking block 42 into the locking slot 43 is realized.

[0031] Specifically, the two ends of the pull rod 41 are rotationally connected with the locking block 42, and the pull rod 41 is two-section type and is hinged at the middle position.

[0032] In addition, the front end of the fork arm 21 is provided with a support cross beam 212, the side surface of the support frame 1 is provided with a connecting rod 11, the connecting rod 11 is rotationally connected with the shaft sleeve 222, the bottom surface of the support frame 1 is provided with a group of support rods 12, and the two ends of the support rod 12 are respectively rotationally connected with the support frame 1 and the support cross beam 212. When the wheelchair is unfolded, the weight of the human body is transmitted to the fork arm 21 through the support rod 12 and the support cross beam 212, and the two ends of the support rod 12 are rotationally connected, which provides a precondition for folding.

[0033] In addition, the chair back frame 3 is provided with a chair back, the support frame 1 is provided with a seat cushion, the front end of the fork arm 21 is provided with a foot pedal and a universal wheel, and the rear end of the fork arm 21 is provided with a power wheel and a power source 213.

[0034] In a preferred embodiment, one end of the core rod 221 is connected with a group of handrails 224, and the handrail 224 is provided with a control handle 225.

[0035] The implementation principle of the electric wheelchair 1000 convenient to fold in the utility model is as follows: the user pulls the middle portion of the pull rod 41, the pull rod 41 is folded to drive the locking blocks 42 on the two sides to move, the locking block 42 is separated from the locking slot 43, and the locking rod 421 no longer contacts the fork arm 21, at this moment, the chair back frame 3, the bottom frame 2 and the support frame 1 can be rotated to complete folding. Conversely, the chair back frame 3, the bottom frame 2 and the support frame 1 are only needed to be unfolded, the user pushes the middle position of the pull rod 41, the locking blocks 42 arranged at the two ends of the pull rod 41 are pushed into the locking slot 43 and the sliding groove 223, and the locking is completed, at this moment, the wheelchair can be normally used.

[0036] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art under the condition of not departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A folding electric wheelchair, characterized in that, It comprises a support frame (1), a chassis (2), a backrest frame (3) and a locking assembly (4), the support frame (1), the chassis (2) and the backrest frame (3) are rotatably connected with each other; The chassis (2) comprises a group of fork arms (21) and a rotating shaft (22), the fork arms (21) are provided with hinge ears (211); One end of the rotating shaft (22) is connected with the hinge ears (211), and the other end is connected with the backrest frame (3), the support frame (1) is rotatably connected with the rotating shaft (22) shell; The locking assembly (4) comprises a pull rod (41), a group of lock blocks (42) and a lock groove (43), both ends of the pull rod (41) are connected with the lock blocks (42), the lock groove (43) is arranged on the fork arm (21), and the lock block (42) can be embedded into the lock groove (43).

2. The electrically powered wheelchair of claim 1, wherein, The lock block (42) comprises a lock rod (421), the lock rod (421) can be in contact with one end of the fork arm (21), the rotating shaft (22) comprises a core rod (221) and a shaft sleeve (222), the core rod (221) is connected with the backrest frame (3), and the shaft sleeve (222) is sleeved on the core rod (221).

3. The electrically powered wheelchair of claim 2, wherein, The shaft sleeve (222) is provided with a sliding groove (223) inside, the upper part of the lock block (42) can be movably accommodated in the sliding groove (223), the side surface of the lock block (42) is provided with a transverse sliding rod, and the sliding rod is matched with the sliding groove (223).

4. The electrically powered wheelchair of claim 1, wherein, Both ends of the pull rod (41) are rotatably connected with the lock blocks (42), and the pull rod (41) is two-section type and hinged at the middle position.

5. The electrically powered wheelchair of claim 3, wherein, The front end of the fork arm (21) is provided with a support cross beam (212), the side surface of the support frame (1) is provided with a connecting rod (11), the connecting rod (11) is rotatably connected with the shaft sleeve (222), the bottom surface of the support frame (1) is provided with a group of support rods (12), and both ends of the support rod (12) are rotatably connected with the support frame (1) and the support cross beam (212) respectively.

6. The electrically powered wheelchair of claim 1, wherein, The backrest frame (3) is provided with a backrest, the support frame (1) is provided with a cushion, the front end of the fork arm (21) is provided with a foot pedal and a universal wheel, and the rear end of the fork arm (21) is provided with a power wheel and a power source (213).

7. The electrically powered wheelchair of claim 3, wherein, One end of the core rod (221) is connected with a group of armrests (224), and the armrests (224) are provided with control handles (225).

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