A detachable armrest for a wheelchair

Abstract

This application relates to the technical field of wheelchairs, and more particularly to a detachable armrest for a wheelchair. It includes an armrest body mounted on the wheelchair body, a mounting rod on the armrest body, and the armrest body slidably connected to the mounting rod. The mounting rod has an adjustment assembly for connecting the armrest body and the mounting rod, used to adjust the position of the armrest body. The mounting rod also has a mounting assembly for fixing the mounting rod to the backrest of the wheelchair body. The mounting assembly includes a connector sleeve fixed to the backrest, a connector rod fixed to the mounting rod, and a mounting bolt threaded onto the connector sleeve. When the connector rod is inserted into the connector sleeve, rotating the mounting bolt causes its end to abut against the surface of the connector rod. This application improves the safety of the person being cared for.

Description

Technical Field

[0001] This application relates to the technical field of wheelchairs, and in particular to a detachable armrest for a wheelchair. Background Technology

[0002] There are many types of wheelchairs, including wheelchair beds. When unfolded, they can be used as a bed; when folded, they can be used as a wheelchair. A wheelchair bed is an integrated nursing bed consisting of independent wheeled components and a main bed frame, operable by the user or caregiver, with detachable, transformable, and movable functions. The integrated design of wheelchair beds primarily addresses the mobility issues of elderly people with limited mobility, reducing the risk of falls during manual lifting or independent ambulation from the bed before using the toilet or getting out of bed. It also avoids skin injuries caused by friction between the body and the equipment during movement. To ensure the safety of those in wheelchair beds, the armrests are crucial. When the person being cared for is seated, the armrests provide support for their arms; when lying down, the armrests provide protection on both sides of the wheelchair bed, improving safety.

[0003] For example, Chinese patent document CN222304195U discloses an armrest structure and wheelchair, including an armrest mechanism comprising armrest components and guide components. The armrest components are arranged along a first direction, and the guide components are connected to the armrest components and arranged along a second direction. A connecting tube includes an unfolding groove and a retractable groove. The connecting tube is configured to accommodate a portion of the guide component's structure. The unfolding groove is located on one side of the retractable groove and communicates with it. The unfolding groove extends axially along the connecting tube from the retractable groove, such that when the guide component is located in the unfolding groove, the armrest component is in an unfolded state; when the guide component moves from the unfolding groove to the retractable groove, the armrest component is in a retracted state. The operator moves the armrest component and guide component together until that portion of the guide component is located in the unfolding groove, then rotates the armrest component, causing that portion of the guide component to engage with the unfolding groove. After the armrest is unfolded, the unfolding slot limits the guide. The whole process not only unfolds the armrest, but also switches the armrest from the unfolded state to the folded state before the armrest structure can be combined with the wheelchair bed.

[0004] In the aforementioned technologies, the armrests can only be combined with the wheelchair bed after the armrests are switched from the unfolded state to the retracted state. However, after being combined with the bed, there are no limiting mechanisms on both sides of the bed, which can easily cause the person being cared for to fall off the bed, increasing the risk of accidents. Summary of the Invention

[0005] This application provides a detachable armrest for a wheelchair, which aims to solve the problem in related technologies that caregivers are prone to falling off the bed.

[0006] The technical solution for a detachable armrest for a wheelchair provided in this application is as follows: A detachable armrest for a wheelchair includes an armrest body mounted on the wheelchair body. The armrest body has a mounting rod slidably connected to the mounting rod. The mounting rod has an adjustment assembly for connecting the armrest body and the mounting rod, used to adjust the position of the armrest body. The mounting rod also has a mounting assembly for fixing the mounting rod to the backrest of the wheelchair body. The mounting assembly includes a connector sleeve fixed to the backrest, a connector rod fixed to the mounting rod, and a mounting bolt threaded onto the connector sleeve. When the connector rod is inserted into the connector sleeve, the mounting bolt is rotated so that its end abuts against the surface of the connector rod.

[0007] Optionally, the adjustment assembly includes an adjustment plate slidably connected to the mounting rod and an adjustment screw rotatably connected to the mounting rod. The adjustment plate is fixed to the handrail body, and the adjustment screw passes through the adjustment plate and is threadedly connected to the adjustment plate.

[0008] Optionally, the armrest body is rotatably connected to a flip plate for supporting the arms of the person being cared for.

[0009] Optionally, the handrail body is a rectangular frame welded from multiple square tubes, and multiple support rods for improving the strength of the handrail body are fixedly installed on the handrail body.

[0010] Optionally, the flip plate is provided with a magnet, which is used to fix the vertically positioned flip plate to the support rod of the handrail body.

[0011] Optionally, the flip plate is made of a U-shaped square tube, and a thin plate is welded to the U-shaped square tube. When flipped horizontally, the end of the U-shaped square tube will abut against the support rod on the handrail body.

[0012] Optionally, the wheelchair body is provided with two armrest bodies, and each armrest body is provided with two mounting components.

[0013] Optionally, the handrail body is provided with a sliding plate, which is sleeved on the adjusting screw and slidably connected to the mounting rod.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. When installing and disassembling the handrail body, simply rotate the mounting bolts so that the ends of the mounting bolts do not abut against the surface of the connector rod, and pull the connector rod directly out of the connector sleeve to achieve disassembly; during installation, simply insert the connector rod into the connector sleeve, and then fix the connector rod to the connector sleeve with the mounting bolts to facilitate installation. 2. Because there are magnets on the flip plate, the vertical flip plate is fixed to the support rod of the handrail body by the magnets, preventing the flip plate from rotating automatically. 3. When installing the armrest onto the flattened wheelchair, adjust the position of the armrest according to the position of the person being cared for, thereby reducing the risk of the person falling. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of an embodiment of this application.

[0016] Figure 2 This is a perspective view of the overall structure of an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the flip plate structure according to an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the installation component structure according to an embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the adjustment component structure according to an embodiment of this application.

[0020] Figure 6 This is a cross-sectional view of the mounting rod according to an embodiment of this application.

[0021] Reference numerals: 7. Handrail body; 71. Base plate; 72. Leg plate; 73. Foot plate; 74. Backrest plate; 75. Mounting rod; 76. Flip plate; 77. Magnet; 78. Excretion port; 8. Support assembly; 81. Second support frame; 82. Support frame; 9. Control assembly; 91. First control cylinder; 92. Second control cylinder; 93. Connecting rod; 10. Limiting assembly; 101. Limiting plate; 102. Limiting hinge; 20. Adjusting assembly; 201. Adjusting plate; 202. Adjusting screw; 30. Mounting assembly; 301. Insertion sleeve; 302. Insertion rod; 303. Mounting bolt. Detailed Implementation

[0022] The following combination Figures 1-6 This application will be described in further detail.

[0023] A detachable armrest for a wheelchair includes an armrest body 7 mounted on the wheelchair body. The wheelchair body includes a support assembly 8 and a base plate 71 mounted on the support assembly 8. A leg plate 72 is rotatably connected to the base plate 71, and a foot plate 73 is rotatably connected to the leg plate 72. A backrest 74 is rotatably connected to the other side of the base plate 71. The backrest 74 and a push plate are located on opposite sides of the base plate 71. The base plate 71, leg plate 72, foot plate 73, and backrest 74 all have a frame structure welded from rectangular tubing. Multiple support rods are welded between the rectangular tubing frames to support the frames. In this embodiment, the armrest body 7 is used on a wheelchair that can be unfolded to form a bed.

[0024] The support assembly 8 includes a second support frame 81 and a support frame 82. The base plate 71 is welded to the support frame 82, and the support frame 82 is welded to the second support frame 81. The second support frame 81 is equipped with casters, which can drive the support assembly 8 and the base plate 71, leg plate 72, foot plate 73 and backrest 74 provided on the support assembly 8 to move. At the same time, a control assembly 9 is provided in the second support frame 81. The control assembly 9 is used to drive the backrest 74, leg plate 72 and foot plate 73 to rotate, so that the base plate 71, leg plate 72, foot plate 73 and backrest 74 are on the same plane, thus forming the second bed board.

[0025] The control assembly 9 includes a first control cylinder 91, a second control cylinder 92, and a connecting rod 93 hinged to the base plate 71. One end of the connecting rod 93 away from the base plate 71 is hinged to the leg plate 72. The length of the connecting rod 93 is greater than the length of the leg plate 72. In this embodiment, the length of the leg plate 72 is two-thirds of the length of the connecting rod 93. The cylinder body of the first control cylinder 91 is hinged to the first support frame 81, and the piston rod is hinged to the backrest 74. The piston rod is hinged at the middle and upper part of the backrest. In this embodiment, the piston rod of the first control cylinder 91 is hinged at two-thirds of the position of the backrest 74, which facilitates the first control cylinder 91 to drive the backrest 74 to rotate. The cylinder body of the second control cylinder 92 is hinged to the support frame, and the piston rod is hinged to the leg plate 72. The operation of the second control cylinder 92 can drive the leg plate 72 to rotate. Due to the setting of the connecting rod 93, the foot plate 73 will rotate during the rotation of the leg plate 72, and finally make the base plate 71, leg plate 72, and foot plate 73 on the same plane.

[0026] A limiting component 10 is provided at the bottom of the footboard 73. The limiting component 10 is used to support the footboard 73. The limiting component 10 includes a limiting plate 101 and a limiting hinge 102 fixed on the limiting plate 101. The limiting hinge 102 is also fixed on the footboard 73. When the wheelchair body needs to be rotated into a wheelchair state, the limiting plate 101 is rotated. The limiting plate 101 will rotate from a horizontal state to a vertical state. The limiting plate 101 in the vertical state supports the footboard 73 and increases the support strength of the footboard 73.

[0027] The handrail body 7 is a rectangular frame welded from multiple square tubes. Multiple support rods are also fixedly installed on the handrail body 7 to improve its strength. An installation rod 75 is fixedly installed on the handrail body 7, and an adjustment component 20 is provided on the installation rod 75. The adjustment component 20 is used to connect the handrail body 7 and the installation rod 75 and can adjust the position of the handrail body 7 on the installation rod 75.

[0028] The mounting rod 75 is also provided with a mounting assembly 30, which is used to fix the mounting rod 75 to the backrest. The mounting assembly 30 includes a plug sleeve 301 fixed to the backrest, a plug rod 302 fixed to the mounting rod 75, and a mounting bolt 303 threadedly connected to the plug sleeve 301. When the plug rod 302 is inserted into the plug sleeve 301, the mounting bolt 303 is rotated so that the end of the mounting bolt 303 abuts against the surface of the plug rod 302, thereby limiting the position of the plug rod 302. At this time, the position of the armrest can be fixed. In this embodiment, two armrest bodies 7 are provided on each backrest 74, and two mounting assemblies 30 are provided on each armrest body 7, thereby improving the stability of the armrest body 7 on the backrest 74.

[0029] The adjustment assembly 20 includes an adjustment plate 201 slidably connected to the mounting rod 75 and an adjustment screw 202 rotatably connected to the mounting rod 75. The adjustment plate 201 is fixed to the handrail body 7, and the adjustment screw 202 passes through and is threadedly connected to the adjustment plate 201. A sliding plate is provided on the handrail body 7, and the sliding plate is sleeved on the adjustment screw 202 and slidably connected to the mounting rod 75. By rotating the adjustment screw 202, the adjustment plate 201 slides on the mounting rod 75, thereby adjusting the position of the handrail body 7. When the base plate 71, leg plate 72, foot plate 73, and backrest 74 are on the same plane, the position of the handrail body 7 can be adjusted according to the position of the person being cared for, thereby reducing the risk of the person falling.

[0030] A flip plate 76 is rotatably connected to the handrail body 7. The flip plate 76 is used to support the arms of the person being cared for, and food can also be placed on the flip plate 76. The flip plate 76 is made of a U-shaped square tube, and a thin plate is welded to the U-shaped square tube. When flipped horizontally, the end of the U-shaped square tube will abut against the support rod on the handrail body 7, which can prevent the flip plate 76 from continuing to rotate downward. In addition, a magnet 77 is provided on the flip plate 76. The magnet 77 fixes the vertical flip plate 76 to the support rod of the handrail body 7, preventing the flip plate 76 from rotating automatically.

[0031] A defecation port 78 is provided on the base plate 71. When the person being cared for needs to defecate, a bedpan is placed below the defecation port 78 to facilitate the collection of the person's feces and improve the cleanliness of the bed sheets.

[0032] The implementation principle of a wheelchair in this application embodiment is as follows: When the wheelchair body needs to be unfolded, the first control cylinder 91 and the second control cylinder 92 work directly. The first control cylinder 91 drives the backrest 74 to rotate, and the second control cylinder 92 drives the leg plate 72 to rotate, thereby adjusting the state of the wheelchair body. After the adjustment is completed, the adjusting screw 202 is rotated, and the adjusting screw 202 drives the armrest to move, adjusting the position of the armrest body 7. At the same time, the armrest body 7 located near the first bed board is disassembled and placed into the second support frame 81.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detachable armrest for a wheelchair, comprising an armrest body (7) disposed on the wheelchair body, characterized in that: The armrest body (7) is provided with a mounting rod (75), the armrest body (7) is slidably connected to the mounting rod (75), the mounting rod (75) is provided with an adjustment component (20) for connecting the armrest body (7) and the mounting rod (75), the adjustment component (20) is used to adjust the position of the armrest body (7), the mounting rod (75) is also provided with a mounting component (30) for fixing the mounting rod (75) to the backrest of the wheelchair body, the mounting component (30) includes a plug sleeve (301) fixed to the backrest, a plug rod (302) fixed to the mounting rod (75), and a mounting bolt (303) threadedly connected to the plug sleeve (301). When the plug rod (302) is inserted into the plug sleeve (301), the mounting bolt (303) is rotated so that the end of the mounting bolt (303) abuts against the surface of the plug rod (302).

2. The detachable armrest for a wheelchair according to claim 1, characterized in that: The adjustment assembly (20) includes an adjustment plate (201) slidably connected to the mounting rod (75) and an adjustment screw (202) rotatably connected to the mounting rod (75). The adjustment plate (201) is fixed on the handrail body (7), and the adjustment screw (202) passes through the adjustment plate (201) and is threadedly connected to the adjustment plate (201).

3. A detachable armrest for a wheelchair according to claim 2, characterized in that: The armrest body (7) is rotatably connected to a flip plate (76) for supporting the arm of the person being cared for.

4. A detachable armrest for a wheelchair according to claim 3, characterized in that: The handrail body (7) is a rectangular frame made of multiple square tubes welded together. Multiple support rods for improving the strength of the handrail body (7) are fixedly installed on the handrail body (7).

5. A detachable armrest for a wheelchair according to claim 4, characterized in that: The flip plate (76) is provided with a magnet (77), which is used to fix the vertical flip plate (76) to the support rod of the handrail body (7).

6. A detachable armrest for a wheelchair according to claim 5, characterized in that: The flip plate (76) is made of a U-shaped square tube, and a thin plate is welded to the U-shaped square tube. When flipped horizontally, the end of the U-shaped square tube will abut against the support rod on the handrail body (7).

7. A detachable armrest for a wheelchair according to claim 1, characterized in that: The wheelchair body is provided with two armrest bodies (7), and each armrest body (7) is provided with two mounting components (30).

8. A detachable armrest for a wheelchair according to claim 6, characterized in that: The handrail body (7) is provided with a sliding plate, which is sleeved on the adjusting screw (202) and slidably connected to the mounting rod (75).

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