Folding wheelchair

Abstract

The utility model discloses a folding wheelchair which comprises a movable bottom frame, a folding framework arranged on the movable bottom frame, a seat cushion frame and a backrest, the seat cushion frame and the backrest are used for sitting, and the seat cushion frame and the backrest are arranged on the folding framework. Wherein the folding framework comprises a bottom frame swing arm and a seat swing arm, one end of the bottom frame swing arm is hinged to the movable bottom frame, the other end of the bottom frame swing arm is hinged to the seat swing arm, and the cushion frame is arranged at the hinged position of the bottom frame swing arm and the seat swing arm; one end of the seat swing arm is hinged to the backrest, and the other end of the seat swing arm is hinged to the underframe swing arm. The movable bottom frame and the seat cushion frame are each provided with a locking assembly used for locking the positions of the bottom frame swing arm and the seat swing arm. The folding chair is simple in structure, comfortable to use and convenient to fold.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a folding wheelchair. Background Technology

[0002] Existing wheelchairs generally have a frame structure with complex connections. Consequently, the folding design of wheelchairs is generally focused on lateral folding, which means that the seat cushion and backrest can only be designed with relatively thin folding materials, thus greatly reducing comfort. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a folding wheelchair that is simple in structure, comfortable to use, and easy to fold.

[0004] To solve the above-mentioned technical problems, this utility model provides a folding wheelchair, including a movable base frame, a folding frame disposed on the movable base frame, a seat cushion and a backrest for sitting, wherein the seat cushion and the backrest are disposed on the folding frame;

[0005] The folding frame includes a base frame swing arm and a seat swing arm. One end of the base frame swing arm is hinged to the movable base frame, and the other end is hinged to the seat swing arm. The seat cushion is mounted at the hinge of the base frame swing arm and the seat swing arm.

[0006] One end of the seat arm is hinged to the backrest, and the other end is hinged to the base frame arm.

[0007] Both the movable base frame and the seat cushion frame are equipped with locking components for locking the positions of the base frame swing arms and the seat swing arms.

[0008] As an improvement to the above solution, the mobile chassis includes a chassis body and a bogie for mounting the steering wheels, wherein the front sides of the chassis body are recessed to form a lateral space for the steering wheels to rotate horizontally.

[0009] The front end of the underframe body extends upward to a predetermined height to connect with the bogie. The bogie has a height difference relative to the rear end of the underframe body to form a longitudinal space for mounting the steering wheels.

[0010] As an improvement to the above solution, the bogie is provided with a pivot base on both sides, the pivot base is equipped with a transverse rotating frame for mounting the steering wheel, the transverse rotating frame is provided with a steering shaft, and the pivot base is provided with a steering shaft hole adapted to the steering shaft for insertion and connection of the steering shaft.

[0011] As an improvement to the above solution, a flip pedal is also included, which is provided with a pedal hinge for hinged with the bogie, so that the flip pedal can be flipped toward the backrest relative to the bogie;

[0012] On the bogie, a limiting hole is provided at the hinge point between the bogie and the pedal hinge to allow the pedal hinge to rotate, thereby limiting the maximum rotation position of the rotating pedal relative to the outward-facing backrest.

[0013] As an improvement to the above solution, the movable base frame is equipped with a locking component, which serves as a base frame locking mechanism.

[0014] The base frame locking mechanism includes a base frame top block for supporting the base frame swing arm and a base frame locking seat for mounting the base frame top block. The base frame locking seat has a base frame ejection channel, the base frame top block is located in the base frame ejection channel, and a base frame ejection spring is provided in the base frame ejection channel for ejecting the base frame top block to below the base frame swing arm.

[0015] As an improvement to the above solution, the locking component provided with the cushion frame is a cushion locking mechanism;

[0016] The seat cushion locking mechanism includes a limiting top block and a limiting locking seat for mounting the limiting top block. The limiting locking seat has a limiting ejection channel, and the limiting top block is disposed in the limiting ejection channel. The limiting ejection channel is provided with a limiting ejection spring for ejecting the limiting top block between the base frame swing arm and the seat swing arm, so that the limiting top block is clamped between the base frame swing arm and the seat swing arm.

[0017] As an improvement to the above solution, the mobile base also includes drive wheels, a motor for driving the drive wheels, and a power supply for supplying power to the motor. The power supply is located on the mobile base, and the drive wheels are installed on both sides of the rear end of the mobile base.

[0018] A preset distance is left between the power supply and the bogie to form a folding storage space for accommodating the seat cushion frame.

[0019] As an improvement to the above solution, it also includes armrests. The armrests are provided on both sides of the backrest. The armrests are provided on both sides of the backrest for mounting the armrests and for rotating limit posts. One end of the armrest is provided with an armrest pivot hole adapted to the armrest pivot and an armrest rotation arc hole for limiting the rotation range of the armrest.

[0020] As an improvement to the above solution, a tilting brake wheel is also included, and a tilting brake bar for mounting the tilting brake wheel is provided at the rear end of the base frame body.

[0021] As an improvement to the above solution, the seat arm is provided with an arm linkage hole through which the limiting top block passes.

[0022] Implementing this utility model has the following beneficial effects:

[0023] This utility model discloses a folding wheelchair, including a movable base frame, a folding frame disposed on the movable base frame, a seat cushion frame for sitting, and a backrest. The seat cushion frame and the backrest are disposed on the folding frame, so a seat cushion to improve comfort can be added to the seat cushion frame, and the backrest can also be made of a thicker and more comfortable material.

[0024] Furthermore, the folding frame includes a base frame swing arm and a seat swing arm. One end of the base frame swing arm is hinged to the movable base frame, and the other end is hinged to the seat swing arm. The seat cushion is mounted at the hinge point of the base frame swing arm and the seat swing arm. One end of the seat swing arm is hinged to the backrest, and the other end is hinged to the base frame swing arm. Therefore, the folding frame allows for longitudinal folding as a whole, avoiding the need for folding the backrest and seat cushion frames.

[0025] Meanwhile, both the movable base frame and the seat cushion frame are equipped with locking components for locking the positions of the base frame swing arms and the seat swing arms, so as to maintain the unfolded state of the folding frame by locking the connection relationship at the hinge. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the folding wheelchair of this utility model;

[0027] Figure 2 This is a top view structural diagram of the folding wheelchair of this utility model;

[0028] Figure 3 This is a schematic diagram of the handle and backrest of this utility model. Detailed Implementation

[0029] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0030] See Figure 1 , 2 According to embodiment 3, this utility model provides a folding wheelchair, including a movable base frame 1, a folding frame disposed on the movable base frame 1, a seat cushion frame 2 and a backrest 3 for sitting, wherein the seat cushion frame 2 and the backrest 3 are disposed on the folding frame;

[0031] The folding frame includes a base frame swing arm 4 and a seat swing arm 5. One end of the base frame swing arm 4 is hinged to the movable base frame 1, and the other end is hinged to the seat swing arm 5. The seat cushion frame 2 is located at the hinge of the base frame swing arm 4 and the seat swing arm 5.

[0032] One end of the seat arm 5 is hinged to the backrest 3, and the other end is hinged to the base frame arm 4.

[0033] Both the movable base frame 1 and the seat cushion frame 2 are equipped with locking components for locking the positions of the base frame swing arm 4 and the seat swing arm 5.

[0034] Specifically, the mobile base frame 1 includes a base frame body 11 and a bogie 12 for mounting the steering wheels 13. The front sides of the base frame body 11 are recessed to form a lateral space for the steering wheels 13 to rotate horizontally.

[0035] The front end of the base frame 11 extends upwards to a predetermined height to connect with the bogie 12. The bogie 12 has a height difference relative to the rear end of the base frame 11, forming a longitudinal space for mounting the steering wheel 13. Furthermore, the bogie 12 has shaft bases 121 on both sides, each shaft base 121 equipped with a transverse rotating frame 122 for mounting the steering wheel 13. The transverse rotating frame 122 has a steering shaft 124, and the shaft base 121 has a steering shaft hole adapted to the steering shaft for insertion and connection. Therefore, the design of the transverse and longitudinal spaces provides the steering wheel 13 with ample room for rotation.

[0036] Accordingly, the mobile base frame 1 also includes drive wheels 14, a motor 15 for driving the drive wheels 14, and a power supply 16 for supplying power to the motor 15. The power supply 16 is located on the mobile base frame 1, and the drive wheels 14 are mounted on both sides of the rear end of the mobile base frame 1. Therefore, the height difference design between the bogie 12 and the rear end of the base frame body 11 allows the base frame body 11 to remain horizontal.

[0037] Furthermore, a preset gap is left between the power supply 16 and the bogie 12 to form a folding storage space 1a for accommodating the seat cushion frame 2. That is, when the folding frame is folded, the seat cushion frame 2 can be completely accommodated within the folding storage space 1a, thereby reducing the height of the folding wheelchair after folding and facilitating storage.

[0038] To improve comfort, the folding wheelchair also includes a flip pedal 17, which is provided with a pedal hinge 18 for hinged to the bogie 12, so that the flip pedal 17 can be flipped relative to the bogie 12 toward the backrest 3.

[0039] On the bogie 12, a limiting hole 123 is provided at the hinge point between the bogie 12 and the pedal hinge 18 to allow the pedal hinge 18 to rotate, thereby limiting the maximum outward rotation position of the rotating pedal 17 relative to the backrest 3. The bogie 12 has a tubular structure, and the limiting hole 123 is an opening with a preset arc length on the tubular structure. Therefore, by controlling the arc length of the opening, the rotating pedal 17 can be rotated outward to the desired tilt angle position.

[0040] The pedal hinge 18 includes a connecting rod 181 and a pedal pivot 182 installed within the tubular structure. One end of the connecting rod 181 is connected to one side of the flip pedal 17, and the other end is connected to the pedal pivot 182. The connecting rod 181 has a preset length so that the flip pedal 17 can be flipped onto the seat cushion 2.

[0041] The locking component of the movable base frame 1 is a base frame locking mechanism 7. The base frame locking mechanism 7 includes a base frame top block 71 for supporting the base frame swing arm 4 and a base frame locking seat 72 for mounting the base frame top block 71. The base frame locking seat 72 is provided with a base frame ejection channel 73. The base frame top block 71 is located in the base frame ejection channel 73. The base frame ejection channel 73 is provided with a base frame ejection spring for ejecting the base frame top block 71 to below the base frame swing arm 4.

[0042] The locking component provided with the cushion frame 2 is the cushion locking mechanism 6;

[0043] The seat cushion locking mechanism 6 includes a limiting top block 61 and a limiting locking seat 62 for mounting the limiting top block 61. The limiting locking seat 62 is provided with a limiting ejection channel 63. The limiting top block 61 is disposed in the limiting ejection channel 63. The limiting ejection channel 63 is provided with a limiting ejection spring for ejecting the limiting top block 61 between the base frame swing arm 4 and the seat swing arm 5, so that the limiting top block 61 is clamped between the base frame swing arm 4 and the seat swing arm 5.

[0044] Therefore, when folding is required, simply press the base frame top block 71 and the limiting top block 61 back into the base frame ejection channel 73 and the limiting ejection channel 63, respectively. Preferably, the base frame top block 71 is a triangular block with a preset angle.

[0045] The folding wheelchair also includes armrests 8. The armrests 8 are located on both sides of the backrest 3. The backrest 3 has armrest pivots 31 and rotation limiting posts 32 on both sides for mounting the armrests. One end of each armrest has an armrest pivot hole 81 adapted to the armrest pivot 31 and an armrest rotation arc-shaped hole 82 for limiting the armrest's rotation range. Therefore, by controlling the arc length of the armrest rotation arc-shaped hole 82, the armrest can be parallel to the backrest 3 in the folded state. Correspondingly, in the unfolded state, the armrests 8 can be perpendicular to the backrest 3, that is, the armrests 8 can be horizontally positioned relative to the ground.

[0046] In order to enable the folding wheelchair to unfold in an orderly manner, the seat arm 5 is provided with a swing arm linkage hole 51 through which the limiting top block 61 passes. Therefore, when unfolding, the base frame arm 4 unfolds first, and then the limiting top block 61 is pressed again, so that the seat arm 5 can unfold relative to the seat cushion frame 2.

[0047] Furthermore, the folding wheelchair also includes a tilting brake wheel 9. The rear end of the base frame body 11 is provided with a tilting brake rod 111 for mounting the tilting brake wheel 9, so that there is a preset safe distance between the tilting brake wheel 9 and the drive wheel 14. With this setting, the overall center of gravity of the folding wheelchair can be located between the steering wheel 13 and the drive wheel 14, so as to reduce the occurrence of the wheelchair tilting backward.

[0048] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A folding wheelchair, characterized in that, It includes a movable base frame, a folding frame mounted on the movable base frame, a seat cushion frame and a backrest for sitting, wherein the seat cushion frame and the backrest are mounted on the folding frame; The folding frame includes a base frame swing arm and a seat swing arm. One end of the base frame swing arm is hinged to the movable base frame, and the other end is hinged to the seat swing arm. The seat cushion is mounted at the hinge of the base frame swing arm and the seat swing arm. One end of the seat swing arm is hinged to the backrest, and the other end is hinged to the base frame swing arm; Both the movable base frame and the seat cushion frame are equipped with locking components for locking the positions of the base frame swing arms and the seat swing arms.

2. The folding wheelchair as described in claim 1, characterized in that, The mobile chassis includes a chassis body and a bogie for mounting the steering wheels. The front sides of the chassis body are recessed to form a lateral space for the steering wheels to rotate horizontally. The front end of the underframe body extends upward to a predetermined height to connect with the bogie. The bogie has a height difference relative to the rear end of the underframe body to form a longitudinal space for mounting the steering wheels.

3. The folding wheelchair as described in claim 2, characterized in that, The bogie has a pivot base on both sides, and the pivot base is equipped with a transverse rotating frame for mounting the steering wheel. The transverse rotating frame is equipped with a steering pivot, and the pivot base is equipped with a steering pivot hole that matches the steering pivot for insertion and connection.

4. The folding wheelchair as described in claim 2 or 3, characterized in that, It also includes a flip pedal, which has a pedal hinge for hinged to the bogie, so that the flip pedal can be flipped toward the backrest relative to the bogie; On the bogie, a limiting hole is provided at the hinge point between the bogie and the pedal hinge to allow the pedal hinge to rotate, thereby limiting the maximum rotation position of the rotating pedal relative to the outward-facing backrest.

5. The folding wheelchair as described in claim 1, characterized in that, The movable base frame is equipped with a locking component, which is a base frame locking mechanism. The base frame locking mechanism includes a base frame top block for supporting the base frame swing arm and a base frame locking seat for mounting the base frame top block. The base frame locking seat has a base frame ejection channel, the base frame top block is located in the base frame ejection channel, and a base frame ejection spring is provided in the base frame ejection channel for ejecting the base frame top block to below the base frame swing arm.

6. The folding wheelchair as described in claim 1, characterized in that, The locking component provided with the cushion frame is a cushion locking mechanism; The seat cushion locking mechanism includes a limiting top block and a limiting locking seat for mounting the limiting top block. The limiting locking seat has a limiting ejection channel, and the limiting top block is disposed in the limiting ejection channel. The limiting ejection channel is provided with a limiting ejection spring for ejecting the limiting top block between the base frame swing arm and the seat swing arm, so that the limiting top block is clamped between the base frame swing arm and the seat swing arm.

7. The folding wheelchair as described in claim 2, characterized in that, The mobile base also includes drive wheels, a motor for driving the drive wheels, and a power supply for supplying power to the motor. The power supply is located on the mobile base, and the drive wheels are installed on both sides of the rear end of the mobile base. A preset distance is left between the power supply and the bogie to form a folding storage space for accommodating the seat cushion frame.

8. The folding wheelchair as described in claim 1, characterized in that, It also includes armrests, with armrests provided on both sides of the backrest. The two sides of the backrest are provided with armrest pivots and rotation limiting posts for mounting the armrests. One end of the armrest is provided with an armrest pivot hole adapted to the armrest pivot and an armrest rotation arc hole for limiting the rotation range of the armrest.

9. The folding wheelchair as described in claim 2, characterized in that, It also includes a tilting brake wheel, and the rear end of the base frame body is provided with a tilting brake bar for mounting the tilting brake wheel.

10. The folding wheelchair as described in claim 6, characterized in that, The seat arm is provided with a linkage hole through which the limiting top block passes.

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