Wheelchair convenient for patient to get in and out of bed

Abstract

The wheelchair comprises a frame, two front wheels and two rear wheels are arranged at the bottom of the frame, a seat cushion and a back cushion are arranged on the frame, handrails are arranged on the portions, on the left side and the right side of the seat cushion, of the frame, hinged supports and bearing cavities are arranged on the frame at intervals, the hinged supports are located behind the frame, the rear ends of the handrails are hinged to the hinged supports, and the bearing cavities are communicated with the hinged supports. A bolt is arranged at the bottom of the front end of the handrail and is detachably connected with the bearing cavity through a self-locking piece; a hollow shaft hole is formed in the frame, the hand ring is rotationally arranged on the shaft hole, a lock rod is detachably arranged in the shaft hole, a first limiting part is arranged on the outer side of the lock rod, and the first limiting part abuts against the hand ring to prevent the hand ring from falling off from the shaft hole; when a patient needs to get in and out of the bed, the armrest rings are taken down, then the armrests are turned backwards, the patient can get in and out of the bed conveniently, after the patient gets in the bed or sits on the wheelchair, the armrests and the armrest rings are reset, and the problems that the patient cannot get in and out of the bed conveniently through a traditional wheelchair are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, in particular to a wheelchair which is convenient for patients to get in and out of bed. Background Art

[0002] A wheelchair is a chair with wheels that can help replace walking. It is an important means of transportation for the injured, sick, and disabled to recover at home, be transported around, see a doctor, and go out for activities. The armrests on both sides of the existing wheelchair are higher than the seat cushion on the wheelchair, which is used to facilitate the patient to place his arms and limit the left and right positions of the body. When getting in and out of bed, the patient needs to stand up from the front of the wheelchair and turn his body before sitting on the bed. Even if the medical staff lifts him to the bed, they need to lift him to a certain height and then move him horizontally to the bed. Similarly, it is also troublesome to get out of bed and onto the wheelchair.

[0003] The existing utility model patent with application number: CN200820199305X discloses a hand-cranked wheelchair including a frame body, a universal wheel and a wheel arranged under the frame body, a small hand wheel is arranged on each of the armrests on both sides of the frame body, a driving wheel is coaxially fixedly connected to the small hand wheel, a passive wheel is coaxially fixedly connected to the wheel, and the driving wheel and the passive wheel are connected by a transmission member. This driving method can achieve non-contact with the roller in contact with the ground, thereby preventing the patient's hands from being contaminated during use and the contaminants on the patient's hands from being transferred to the ground, but this application still has the problem that the traditional wheelchair is not convenient for patients to get in and out of bed. Utility Model Content

[0004] The utility model aims to provide a wheelchair which is convenient for patients to get in and out of bed, and solves the problems that traditional wheelchairs are not convenient for patients to get in and out of bed.

[0005] The embodiment of the utility model is realized by the following technical scheme: a wheelchair for patients to get in and out of bed conveniently, comprising a frame, a plurality of armrests are arranged on the frame, a plurality of receiving cavities are arranged on the frame, a plurality of connecting pieces are arranged on the armrests, and one of the connecting pieces is inserted and arranged in one of the receiving cavities;

[0006] A hinge seat is arranged on the frame, and one end of the armrest is hinged to the hinge seat.

[0007] Furthermore, the armrest can be rotated to the rear side of the frame through the hinge seat.

[0008] Furthermore, the connecting member and the receiving cavity are fixed by a self-locking member; a notch is provided on one side of the receiving cavity, and a pin hole is provided on the receiving cavity;

[0009] The self-locking member comprises a pin rod, a spring and a pin column, a sliding hole is formed through the connecting member, one end of the pin rod extends into the sliding hole and is connected to the pin column, and the other end of the pin rod extends out of the notch;

[0010] The spring is placed in the sliding hole and sleeved on the pin rod, and the two ends of the spring are respectively in contact with the pin column and the connecting member; when the connecting member is inserted into the receiving cavity, the pin column is pushed into the pin hole by the spring.

[0011] Furthermore, the self-locking member also includes a seesaw, a middle portion of the seesaw is hinged to the connecting member, and one end of the seesaw is hinged to the pin rod.

[0012] Furthermore, both left and right sides of the frame are rotatably provided with handrails, and the two handrails are respectively connected to the rear wheels of the wheelchair through a transmission mechanism;

[0013] It also includes a locking rod, on which a first limiting portion and a second limiting portion are spaced apart. The locking rod passes through the axis of the handrail and then passes through an axial hole on the frame. The first limiting portion abuts against a side of the handrail away from the frame to prevent the handrail from moving axially, and the second limiting portion abuts against a side of the axial hole away from the handrail to prevent the locking rod from detaching from the axial hole.

[0014] Furthermore, the first limiting portion is threadedly connected to the locking rod.

[0015] Furthermore, the second limiting portion includes a ball and a leaf spring, and a plurality of conical cavities are radially opened on the locking rod. The diameter of the ball is larger than the diameter of the outer opening of the conical cavity. The ball and the leaf spring are both placed in the conical cavity, and the leaf spring acts on the ball to make the ball extend out of the conical cavity.

[0016] Furthermore, the second limiting portion is threadedly connected to the locking rod, and the second limiting portion is fixed on the frame.

[0017] Furthermore, the transmission mechanism includes a driving wheel, a driven wheel and a synchronous belt, the driving wheel is rotatably arranged between the handrail ring and the frame, the handrail ring is transmission-connected with the driving wheel, and the top of the driving wheel is lower than the seat cushion on the frame;

[0018] The driven wheel is drivingly connected to the rear wheel, and the driven wheel is drivingly connected to the driving wheel via the synchronous belt.

[0019] Furthermore, the driving wheel is coaxially arranged with the hand holding ring, and the driving wheel and the hand holding ring are connected via a spline.

[0020] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0021] 1. Traditional wheelchairs have larger rear wheels, but the rear wheels are mostly located at the rear side and will not exceed the height of the seat cushion. The patient directly drives the drive ring on the rear wheel, and the main factors affecting the patient's getting in and out of bed are the armrests on both sides. When the patient needs to get in and out of bed, he presses the end of the seesaw away from the pin rod. While the seesaw rotates, it drives the lock pin rod to move outward, and then drives the pin column to fall off from the pin hole on the receiving cavity. Press the seesaw without loosening and lift the armrest up, then the armrest can be flipped to the rear side of the frame, and the patient can get in and out of bed from this side. When medical staff are needed to assist, the armrests on both sides can be flipped backwards, and then the patient can be assisted or lifted to get in and out of bed. On the contrary, when the patient gets in bed or sits in the wheelchair, the armrest is directly flipped forward. Under the condition of gravity and rapid rotation, the hemispherical position of the pin column contacts the receiving cavity, and then the pin column enters the sliding hole. Since the spring always pushes the pin column, when the sliding hole and the pin hole are aligned, the pin column enters the pin hole under the action of the spring, and then the connecting piece is connected to the receiving cavity to achieve the fixation of the armrest.

[0022] 2. When the patient needs to get in and out of bed, first pull out the wheelchair quick-release rod, then remove the handrail ring from the shaft hole, and then flip the armrest backwards to make it easier for the patient to get in and out of bed. After the patient gets in bed or sits in the wheelchair, reset the armrest and handrail ring. It is simple, convenient and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of a second embodiment of a wheelchair for facilitating patients getting in and out of bed provided by the utility model;

[0025] Figure 2 A schematic diagram of the structure of the connection between the armrest and the frame of a wheelchair provided by the utility model for facilitating patients getting in and out of bed;

[0026] Figure 3 A cross-sectional view of the cooperation between a self-locking member, an armrest and a receiving cavity in a wheelchair for facilitating patients getting in and out of bed provided by the utility model;

[0027] Figure 4 A schematic cross-sectional view of the structure of the handrail, the locking rod, the driving wheel and the frame of a wheelchair for patients to get in and out of bed provided by the utility model;

[0028] Figure 5 is a schematic structural diagram of the second limiting portion in Example 3;

[0029] Icons: 1. Frame, 11. Axle hole, 2. Front wheel, 3. Rear wheel, 4. Seat cushion, 5. Back cushion, 6. Armrest, 61. Hinge seat, 62. Receiving cavity, 621. Pin hole, 63. Latch, 7. Self-locking piece, 71. Connecting piece, 711. Sliding hole, 72. Rocker, 73. Pin rod, 74. Spring, 75. Pin column, 8. Handrail, 81. Locking rod, 811. Conical cavity, 82. First limiting part, 83. Internal spline, 84. Second limiting part, 841. Ball, 842. Leaf spring, 9. Transmission mechanism, 91. Driving wheel, 911. External spline, 92. Driven wheel, 93. Synchronous belt. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] Reference Figure 2 and 3 As shown, the present embodiment provides a wheelchair for patients to get in and out of bed conveniently, comprising a frame 1, two front wheels 2 and two rear wheels 3 are arranged at the bottom of the frame 1, a seat cushion 4 and a back cushion 5 are arranged on the frame 1, armrests 6 are arranged on the frame 1 on the left and right sides of the seat cushion 4, hinge seats 61 and receiving chambers 62 are arranged on the frame 1 at intervals, the hinge seat 61 is located at the rear of the frame 1, the rear end of the armrest 6 is hinged to the hinge seat 61, the armrest 6 can be rotated to the rear side of the frame 1 through the hinge seat 61, a latch 63 is arranged at the bottom of the front end of the armrest 6, a connecting piece 71 is detachably connected to the latch 63, and the connecting piece 71 is detachably connected to the receiving chamber 62 through a self-locking piece 7.

[0034] More specifically, Figure 3As shown, the self-locking member 7 includes a connecting member 71, a seesaw 72, a pin 73 and a spring 74. The middle of the seesaw 72 is hinged to the outer wall of the connecting member 71, and one end of the seesaw 72 is hinged to one end of the pin 73.

[0035] The receiving cavity 62 is provided with a pin hole 621, and the connecting member 71 is provided with a sliding hole 711. The free end of the pin rod 73 extends into the sliding hole 711 and is coaxially connected with a pin column 75. The diameter of the pin column 75 is smaller than the diameters of the pin hole 621 and the sliding hole 711. The end of the pin column 75 away from the pin rod 73 is hemispherical and extends out of the sliding hole 711.

[0036] The spring 74 is placed in the sliding hole 711 and sleeved on the pin rod 73. The two ends of the spring 74 are respectively in contact with the pin column 75 and the connecting member 71; when the connecting member 71 is connected to the receiving cavity 62, the spring 74 pushes the pin column 75 into the pin hole 621.

[0037] In specific implementation, the traditional wheelchair has a larger rear wheel 3, but the rear wheel 3 is mostly located at the rear side and will not exceed the height of the seat cushion 4. The patient directly drives the driving ring on the rear wheel 3, and the main factors affecting the patient's getting in and out of bed are the armrests 6 on both sides. When the patient needs to get in and out of bed, the end of the rocker 72 away from the pin rod 73 is pressed. While the rocker 72 rotates, the pin rod 73 is driven to move outward, and then the pin column 75 is driven to fall off from the pin hole 621 on the receiving cavity 62. The rocker 72 is pressed and the armrest 6 is lifted up, so that the armrest 6 can be flipped to the rear side of the frame 1, and the patient can get in and out of the bed from this side. When medical staff assistance is needed, the armrests 6 on both sides can be flipped backwards, and then the patient can be assisted or lifted to get in and out of bed. On the contrary, when the patient gets on the bed or sits in the wheelchair, the armrest 6 is directly flipped forward. Under the conditions of gravity and rapid rotation, the hemispherical position of the pin 75 contacts the receiving cavity 62, and then the pin 75 enters the sliding hole 711. Since the spring 74 always pushes the pin 75, when the sliding hole 711 and the pin hole 621 are aligned, the pin 75 enters the pin hole 621 under the action of the spring 74, and then the connecting piece 71 is connected to the receiving cavity 62, thereby fixing the armrest 6.

[0038] It should be noted that the stroke of the pin 75 is short, and the diameters of the sliding hole 711 and the pin hole 621 are both larger than the pin 75. When the stroke is short, the pin 75 can slide in the sliding hole 711 through the cooperation of the rocker 72 and the spring 74. If necessary, a waist hole can be set along the plate direction of the rocker 72, and the part where the pin rod 73 and the rocker 72 are hinged can slide in the waist hole; or the pin rod 73 is an elastic rod with high ductility, which can achieve elastic deformation.

[0039] Embodiment 2:

[0040] Reference Figures 1 to 4As shown, this embodiment provides a wheelchair for patients to get in and out of bed conveniently, including a frame 1, two front wheels 2 and two rear wheels 3 are arranged at the bottom of the frame 1, a seat cushion 4 and a back cushion 5 are arranged on the frame 1, armrests 6 are arranged on the frame 1 on both sides of the seat cushion 4, handrails 8 are rotatably arranged on both sides of the frame 1, and the two handrails 8 are respectively connected to a rear wheel 3 through a transmission mechanism 9, a hinge seat 61 and a receiving cavity 62 are arranged on the frame 1 at intervals, the hinge seat 61 is located at the rear of the frame 1, the rear end of the armrest 6 is hinged to the hinge seat 61, and a latch 63 is arranged at the bottom of the front end of the armrest 6, and a connecting member 71 is detachably connected to the latch 63, and the connecting member 71 is detachably connected to the receiving cavity 62 through a self-locking member 7; the self-locking member 7 here has the same structure as the self-locking member 7 of the first embodiment, and the implementation method is also the same as the first embodiment. In addition to the armrest 6, the handrail 8 will also form an obstacle to the patient getting in and out of bed in this embodiment, and the handrail 8 is set to be detachable.

[0041] More specifically, Figure 4 As shown, a hollow shaft hole 11 is provided on the frame 1, and the handgrip 8 is rotatably provided on the shaft hole 11. A locking rod 81 is detachably provided in the shaft hole 11, and a first limiting portion 82 is provided on the outer side of the locking rod 81. The first limiting portion 82 abuts against the handgrip 8 to prevent the handgrip 8 from falling off from the shaft hole 11.

[0042] The transmission mechanism 9 includes a driving wheel 91, a driven wheel 92 and a synchronous belt 93. The driving wheel 91 is rotatably arranged between the handrail 8 and the frame 1. The handrail 8 is connected to the driving wheel 91 by transmission. The top of the driving wheel 91 is lower than the seat cushion 4.

[0043] The driven wheel 92 is transmission-connected to the rear wheel 3 , and the driven wheel 92 is transmission-connected to the driving wheel 91 via a synchronous belt 93 .

[0044] The driving wheel 91 is coaxially arranged with the handrail 8, and the driving wheel 91 is rotatably arranged on the shaft hole 11. The driving wheel 91 and the handrail 8 are connected by splines. An external spline 911 is arranged on the side of the driving wheel 91 close to the handrail 8, and an internal spline 83 is arranged on the side of the handrail 8 close to the driving wheel 91. The external spline 911 is engaged with the internal spline 83. Then, by driving the handrail 8 forward and reverse, the driving wheel 91 can be driven to rotate forward and reverse, and the driving wheel 91 then drives the rear wheel 3 forward and reverse through the synchronous belt 93 and the driven wheel 92, so as to realize the driving of the wheelchair.

[0045] In specific implementation, the locking rod 81 is a wheelchair quick-release rod, which is similar to a ball head locking pin and a quick-release pin. You can refer to the patent "A wheelchair quick-release spindle", the announcement number is: CN202892266U, the wheelchair quick-release rod is threadedly connected to the first limiting portion 82, and the first limiting portion 82 is a locking cap. When the patient needs to get in and out of bed, first pull out the wheelchair quick-release rod, then remove the handrail ring 8 from the shaft hole 11, and then flip the armrest 6 backwards, so that the patient can get in and out of bed conveniently. After the patient gets in bed or sits in the wheelchair, the armrest 6 and the handrail ring 8 can be reset. It is simple, convenient and highly practical.

[0046] Embodiment three:

[0047] Based on the second embodiment, Figure 5 As shown, as another embodiment of the locking rod 81, the second limiting portion 84 includes a ball 841 and a leaf spring 842, and a plurality of conical cavities 811 are radially opened on the locking rod 81. The diameter of the ball 841 is larger than the diameter of the outer opening of the conical cavity 811. The ball 841 and the leaf spring 842 are both placed in the conical cavity 811, and the leaf spring 842 acts on the ball 841 to extend the ball 841 out of the conical cavity 811. In specific implementation, when the locking rod 81 needs to be inserted, the inner cavity of the shaft hole 11 of the plurality of balls 841 abuts against and moves toward the inner side of the conical cavity 811, and then the whole body and the locking rod 81 pass through the shaft hole 11. After extending out, a part of the ball 841 is pushed out of the conical hole 811 by the leaf spring 842 and abuts against the end of the shaft hole 11, and then the locking rod 81 is limited and fixed. When it needs to be pulled out, it can be pulled out with force.

[0048] Embodiment 4:

[0049] Based on the second embodiment, as another implementation, the second limiting portion 84 is threadedly connected to the locking rod 81, and the second limiting portion 84 is fixed on the frame 1. Here, the second limiting portion 84 is similar to a nut fixed on the frame 1, which is threadedly connected to the locking rod 81, thereby realizing the connection between the locking rod 81 and the frame 1.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheelchair for patients to get in and out of bed, comprising a frame (1), wherein the frame (1) is provided with a plurality of armrests (6), and characterized in that: The frame (1) is provided with a plurality of receiving cavities (62), the armrest (6) is provided with a plurality of connecting members (71), and one of the connecting members (71) is inserted into one of the receiving cavities (62); A hinge seat (61) is provided on the vehicle frame (1), and one end of the armrest (6) is hinged to the hinge seat (61).

2. A wheelchair for patients to get in and out of bed according to claim 1, characterized in that: The armrest (6) can be rotated to the rear side of the vehicle frame (1) via the hinge seat (61).

3. A wheelchair for patients to get in and out of bed conveniently according to claim 2, characterized in that: The connecting member (71) and the receiving cavity (62) are fixed via a self-locking member (7); a notch is provided on one side of the receiving cavity (62), and a pin hole (621) is provided on the receiving cavity (62); The self-locking member (7) comprises a pin rod (73), a spring (74) and a pin column (75); a sliding hole (711) is provided through the connecting member (71); one end of the pin rod (73) extends into the sliding hole (711) and is connected to the pin column (75); the other end of the pin rod (73) extends out of the notch; The spring (74) is placed in the sliding hole (711) and sleeved on the pin rod (73), and the two ends of the spring (74) are respectively in contact with the pin column (75) and the connecting member (71); when the connecting member (71) is inserted into the receiving cavity (62), the spring (74) pushes the pin column (75) into the pin hole (621).

4. A wheelchair for patients to get in and out of bed conveniently according to claim 3, characterized in that: The self-locking member (7) further comprises a seesaw (72), the middle portion of the seesaw (72) is hinged to the connecting member (71), and one end of the seesaw (72) is hinged to the pin rod (73).

5. A wheelchair for facilitating patients getting in and out of bed according to any one of claims 1 to 4, characterized in that: Handrails (8) are rotatably provided on both the left and right sides of the frame (1), and the two handrails (8) are each connected to the rear wheels (3) of the wheelchair via a transmission mechanism (9); The invention also includes a locking rod (81), on which a first limiting portion (82) and a second limiting portion (84) are arranged at intervals. The locking rod (81) passes through the axis of the handrail (8) and then passes through an axial hole (11) on the frame (1). The first limiting portion (82) abuts against the side of the handrail (8) away from the frame (1) to prevent the handrail (8) from moving axially. The second limiting portion (84) abuts against the side of the axial hole (11) away from the handrail (8) to prevent the locking rod (81) from being separated from the axial hole (11).

6. A wheelchair for patients to get in and out of bed conveniently according to claim 5, characterized in that: The first limiting portion (82) is threadedly connected to the locking rod (81).

7. A wheelchair for patients to get in and out of bed conveniently according to claim 6, characterized in that: The second limiting portion (84) includes a ball (841) and a leaf spring (842). A plurality of conical cavities (811) are radially opened on the locking rod (81). The diameter of the ball (841) is larger than the diameter of the outer opening of the conical cavity (811). The ball (841) and the leaf spring (842) are both placed in the conical cavity (811). The leaf spring (842) acts on the ball (841) to make the ball (841) extend out of the conical cavity (811).

8. The wheelchair for patients to get in and out of bed conveniently according to claim 6, characterized in that: The second limiting portion (84) is threadedly connected to the locking rod (81), and the second limiting portion (84) is fixed on the vehicle frame (1).

9. The wheelchair for patients to get in and out of bed conveniently according to claim 5, characterized in that: The transmission mechanism (9) includes a driving wheel (91), a driven wheel (92) and a synchronous belt (93); the driving wheel (91) is rotatably arranged between the handrail (8) and the frame (1); the handrail (8) is transmission-connected to the driving wheel (91); and the top of the driving wheel (91) is lower than the seat cushion (4) on the frame (1); The driven wheel (92) is in transmission connection with the rear wheel (3), and the driven wheel (92) is in transmission connection with the driving wheel (91) via the synchronous belt (93).

10. A wheelchair for patients to get in and out of bed conveniently according to claim 9, characterized in that: The driving wheel (91) and the hand-holding ring (8) are coaxially arranged, and the driving wheel (91) and the hand-holding ring (8) are connected via a spline.

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