Handle structure and wheelchair

Abstract

The handle structure and the wheelchair provided by the present disclosure comprise a handle sleeve, a handle tube coaxially sleeved in the handle sleeve, a plurality of lifting holes distributed along the axial direction of the handle tube and arranged on the tube wall of the handle tube, an adjusting assembly comprising a locking member and a fastener fixed on the outer periphery of the handle sleeve, the locking member penetrating through the fastener, the handle sleeve and any one of the plurality of lifting holes, the end of the locking member radially abutting against the tube wall of the handle tube, and the locking member being threadedly connected with the fastener. The handle structure and the wheelchair provided by the present disclosure can realize the adjustment of the height of the handle within a certain range due to the plurality of lifting holes, can meet the individual needs of operators with different heights, and improve the comfort and convenience of use. The entire handle structure is composed of the handle sleeve, the handle tube and the adjusting assembly, has a simple structure and is convenient to assemble, the handle is fixed by a mechanical locking mode, has high reliability and stability, and is not prone to loosening or failure.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, and more particularly to a handle structure and a wheelchair. Background Technology

[0002] Wheelchairs are essential mobility aids for elderly people with limited mobility or those with temporary functional impairments. Currently, most wheelchairs on the market use handles with a fixed height, which cannot accommodate the needs of people of different heights. This can cause fatigue for the person pushing the wheelchair due to the uncomfortable handle height, and may even affect the stability of the wheelchair. Utility Model Content

[0003] This disclosure provides a handle structure and a wheelchair to at least solve the above-mentioned technical problems existing in the prior art.

[0004] According to a first aspect of this disclosure, a handle structure is provided, comprising:

[0005] Put the glove tube;

[0006] A handle tube is coaxially fitted inside the handle sleeve, and the handle tube has multiple lifting holes spaced apart along its axial direction on its wall; and

[0007] The adjustment assembly includes a locking member and a fastener fixed to the outer periphery of the handlebar sleeve. The locking member passes through the fastener, the handlebar sleeve, and any one of the plurality of lifting holes. The end of the locking member radially abuts against the wall of the handlebar sleeve. The locking member is threadedly connected to the fastener.

[0008] In one embodiment, the locking element includes a smooth rod section and a threaded section that are connected to each other;

[0009] The smooth rod section passes through the lifting hole and is radially inserted into the handle tube, with the end of the smooth rod section away from the threaded section abutting against the tube wall of the handle tube;

[0010] The threaded section is threadedly connected to the fastener.

[0011] In one embodiment, a guide chamfer is provided at the end of the polished rod segment away from the threaded segment.

[0012] In one embodiment, the locking member further includes a screwing portion disposed on the threaded section at one end away from the smooth rod section.

[0013] In one embodiment, the glove tube has a through hole, and the fastener has a threaded hole, which is coaxially arranged with the through hole so that the locking member can pass through.

[0014] According to a second aspect of this disclosure, a wheelchair is provided, including a frame assembly, a brake assembly, a pedal assembly, and a handlebar structure as described in any of the above embodiments, wherein the handlebar sleeve is connected to the frame assembly, the brake assembly is disposed on both sides of the frame assembly, and the pedal assembly is disposed at the bottom of the frame assembly.

[0015] In one possible implementation, the frame assembly includes:

[0016] Two main frames; and

[0017] Two support frames are provided, which are cross-connected and rotatably connected at the middle, and the bottoms of the two support frames are rotatably connected to the two main vehicle frames respectively.

[0018] In one embodiment, the frame assembly further includes a fork arm link, one end of which is rotatably connected to the upper end of the support frame, and the other end is connected to the main frame.

[0019] In one possible embodiment, the brake assembly includes a brake base plate, a crank handle, a brake plate, a connecting rod, and a return torsion spring; wherein,

[0020] The brake base plate is fixed to the vehicle frame assembly;

[0021] The crank and the brake plate are respectively hinged to the brake base plate;

[0022] The first end of the connecting rod is hinged to the rocker handle, and the second end of the connecting rod is hinged to the brake plate;

[0023] The reset torsion spring is mounted on the hinge shaft between the brake base plate and the brake plate. One end of the reset torsion spring is fixedly connected to the brake base plate, and the other end is fixedly connected to the brake plate.

[0024] In one possible implementation, the handlebar sleeve is connected to the frame assembly via a folding backrest.

[0025] In this disclosure, the multiple height adjustment holes in the handle structure allow for multi-height adjustment within a certain range, meeting the personalized needs of operators of different heights and improving comfort and convenience. The entire handle structure consists of a handle sleeve, a handle tube, and an adjustment component, featuring a simple structure and easy assembly. The handle is secured using a mechanical locking method, ensuring high reliability and stability, and reducing the likelihood of loosening or failure. Furthermore, this handle structure can be widely used in wheelchairs, nursing trolleys, and other instruments requiring adjustable handle height, demonstrating strong versatility and practicality.

[0026] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0027] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0028] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0029] Figure 1 A schematic diagram of the overall structure of a handle structure according to an exemplary embodiment of the present disclosure is shown;

[0030] Figure 2 An overall structural cross-sectional view of a handle structure according to an exemplary embodiment of this disclosure is shown;

[0031] Figure 3 A schematic diagram of the locking member structure of a handle structure according to an exemplary embodiment of the present disclosure is shown;

[0032] Figure 4 A schematic diagram of the overall structure of a wheelchair, an exemplary embodiment of the present disclosure, is shown;

[0033] Figure 5 A schematic diagram of the braking assembly structure of a wheelchair, as shown in an exemplary embodiment of this disclosure, is illustrated. Figure 1 ;

[0034] Figure 6 A schematic diagram of the braking assembly structure of a wheelchair, as shown in an exemplary embodiment of this disclosure, is illustrated. Figure 2 .

[0035] The following are the labeling instructions in the diagram: 1. Handlebar sleeve; 2. Handlebar sleeve; 3. Adjustment assembly; 4. Frame assembly; 5. Brake assembly; 6. Pedal assembly; 7. Folding back assembly; 21. Drop pin; 22. Handlebar grip; 23. Handbrake; 31. Locking element; 32. Fastener; 41. Main frame; 42. Support frame; 43. Bottom pivot; 44. Fork arm linkage; 45. Seatpost pad; 51. Brake base plate; 52. Crank handle; 53. Brake plate; 54. Linkage; 55. Return torsion spring; 71. Fixed seat; 72. Movable seat; 311. Smooth section; 312. Threaded section; 313. Guide chamfer; 314. Tightening part. Detailed Implementation

[0036] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0037] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0038] Reference Figure 1 and Figure 2 As shown, an exemplary embodiment of the present disclosure discloses a handle structure including a handle sleeve 1, a handle tube 2, and an adjustment assembly 3. The handle tube 2 is coaxially sleeved inside the handle sleeve 1, and a plurality of lifting holes 21 are provided on the tube wall of the handle tube 2 at intervals along its axial direction. The adjustment assembly 3 includes a locking member 31 and a fastener 32 fixed to the outer periphery of the handle sleeve 1. The locking member 31 passes through the fastener 32, the handle sleeve 1, and any one of the plurality of lifting holes 21. The end of the locking member 31 radially abuts against the tube wall of the handle tube 2, and the locking member 31 is threadedly connected to the fastener 32.

[0039] In this embodiment, the handle tube 1 is typically made of high-strength aluminum alloy in a hollow cylindrical shape. Correspondingly, the handle tube 2 is also made of a hollow cylindrical shape, with its outer diameter smaller than the inner diameter of the handle tube 1, allowing it to smoothly and coaxially fit inside the handle tube 1. The upper end of the handle tube 2 is provided with a handle sleeve 22 and a handbrake 23. Multiple circular lifting holes 21 are spaced axially along the tube wall of the handle tube 2, providing different positioning positions for the locking component 31. This allows the handle tube 2 to be fixed at multiple preset heights, and the spacing between adjacent lifting holes 21 is set according to the actual height adjustment requirements. The fastener 32 in the adjusting assembly 3 can specifically be a nut with internal threads, welded and fixed to the outer periphery of the handle tube 1. The axis of the fastener 32 is aligned with the radial direction of the handle tube 1. The locking component 31 can be a screw with external threads, its end tapered, to better radially abut and lock the tube wall of the handle tube 2. By tightening the locking member 31, the locking member 31 can be displaced along the axial direction of the fastener 32 under the action of the thread, thereby locking or loosening the handle tube 2 and completing the adjustment and fixation of the handle height. When it is necessary to adjust the handle height, the operator only needs to tighten the locking member 31 and rotate it away from the handle tube 2, so that it is disengaged from the lifting hole 21 of the handle tube 2. At this time, the handle tube 2 can move freely along the axial direction of the handle tube 1 because it loses the radial clamping force of the locking member 31. The operator can hold the handle tube 2 and move it along the axial direction of the handle tube 1 to the target height according to their own needs. After adjusting to the target height, let it pass through the fastener 32, the handle tube 1 and the corresponding height lifting hole 21 in sequence, and tighten the locking member 31 in the opposite direction so that the end of the locking member 31 radially presses against the tube wall of the handle tube 2. The friction between the locking member 31 and the tube wall of the handle tube 2 realizes the stable fixation of the handle tube 2 at the new height position.

[0040] In summary, the handle structure disclosed herein, with its multiple lifting holes 21, allows for multi-height adjustment within a certain range, meeting the personalized needs of operators of different heights and improving comfort and convenience. The entire handle structure comprises a handle sleeve 1, a handle sleeve 2, and an adjustment component 3. Its simple structure and easy assembly, along with the mechanical locking mechanism for secure fixing, ensure high reliability and stability, preventing loosening or failure. Furthermore, this handle structure can be widely applied to various instruments requiring handle height adjustment, such as wheelchairs and nursing trolleys, demonstrating strong versatility and practicality.

[0041] Reference Figure 3 As shown, in one embodiment, the locking member 31 includes a smooth rod section 311 and a threaded section 312 connected to each other. The smooth rod section 311 passes through the lifting hole 21 and is radially inserted into the handle tube 2. The end of the smooth rod section 311 away from the threaded section 312 abuts against the tube wall of the handle tube 2. The threaded section 312 is threadedly connected to the fastener 32.

[0042] In this embodiment, the locking member 31 includes a smooth rod section 311 and a threaded section 312 connected to each other. The diameter of the smooth rod section 311 is slightly smaller than the diameter of the lifting hole 21 to ensure that it can pass smoothly and be radially inserted into the handle tube 2. When it is necessary to adjust the handle height, the operator first screws the threaded section 312 of the locking member 31 away from the handle tube 2, so that it is removed from the lifting hole 21 of the handle tube 2. At this time, the handle tube 2 can move freely along the axial direction of the handle tube 1 because it loses the radial clamping force of the smooth rod section 311 of the locking member 31. The operator can hold the handle tube 2 and move it along the axial direction of the handle tube 1 to the target height according to their own needs. After adjusting to the target height, it is passed through the fastener 32, the handle tube 1 and the corresponding height lifting hole 21 in sequence. The threaded section 312 is screwed in the opposite direction, and the end of the smooth rod section 311 is radially pressed against the tube wall of the handle tube 2. The friction between the locking member 31 and the tube wall of the handle tube 2 realizes the stable fixation of the handle tube 2 at the new height position.

[0043] In one embodiment, a guide chamfer 313 is provided at the end of the smooth rod section 311 away from the threaded section 312.

[0044] In this embodiment, the guide chamfer 313 and the smooth rod section 311 are integrally formed, and its conical surface is smooth and symmetrical. This not only facilitates the precise and smooth insertion of the smooth rod section 311 into the lifting hole 21, but also helps to form a tight and stable contact with the inner wall of the handle tube 2 after insertion, ensuring the stability and reliability of the connection between the two and effectively improving the overall performance and durability of the structure.

[0045] Furthermore, in one embodiment, the locking member 31 further includes a tightening part 314, which is disposed on the threaded section 312 at the end away from the smooth rod section 311. The tightening part 314 improves the convenience and labor-saving of operation, and also facilitates quick adjustment and maintenance in complex environments.

[0046] In one embodiment, a through hole is provided on the glove tube 1, and a threaded hole is provided on the fastener 32. The threaded hole and the through hole are coaxially arranged so that the locking member 31 can pass through.

[0047] In this embodiment, the through hole on the glove tube 1 and the threaded hole on the fastener 32 are coaxially arranged to ensure that the locking member 31 passes through smoothly and is installed accurately, which improves the accuracy and stability of adjustment, avoids shaking or jamming caused by poor component fit, and further improves the reliability and service life of the handle structure.

[0048] Reference Figure 4As shown, this disclosure also provides a wheelchair, including a frame assembly 4, a brake assembly 5, a foot pedal assembly 6, and a handle structure as described in any of the above embodiments, wherein a glove tube 1 is connected to the frame assembly 4, the brake assembly 5 is disposed on both sides of the frame assembly 4, and the foot pedal assembly 6 is disposed at the bottom of the frame assembly 4.

[0049] In this embodiment, the frame assembly 4 serves as the basic support structure for the wheelchair, bearing other components and ensuring overall stability; the brake assembly 5 is located on both sides of the frame assembly 4 to stabilize and stop the wheelchair, ensuring safe use; the foot pedal assembly 6 is installed at the bottom of the frame assembly 4 and features an adjustable design, allowing it to be adjusted according to different users' leg lengths and sitting postures, providing more comfortable foot support and enhancing riding comfort; the handlebar structure is connected to the frame assembly 4 and is height-adjustable to meet the pushing needs of people of different heights, improving comfort and convenience.

[0050] In one embodiment, the frame assembly 4 includes two main frames 41 and two support frames 42. The two support frames 42 are cross-connected at the middle and rotatably connected. The bottom of the two support frames 42 is rotatably connected to the two main frames 41 respectively.

[0051] In this embodiment, the upper part of the main frame 41 is provided with a seat post pad 45 for mounting the seat. Two support frames 42 are cross-connected and rotatably arranged in the middle. This cross-connection design allows the support frames 42 to flexibly adjust their angles between the main frames 41, enabling the wheelchair to be folded or unfolded, greatly improving its portability. The bottom of each support frame 42 is rotatably connected to one of the two main frames 41. Specifically, the bottom of the support frame 42 is connected to the main frame 41 via a bottom pivot 43. This rotatable connection allows the support frame 42 to rotate at a certain angle on the main frame 41. When the wheelchair is in use, the support frames 42 and the main frames 41 form a stable triangular structure, enhancing the overall stability of the wheelchair. When the wheelchair needs to be folded, the two support frames 42 can rotate upwards, bringing the two main frames 41 closer together to reduce the wheelchair's size.

[0052] In one embodiment, the frame assembly 4 further includes a fork arm link 44, one end of which is rotatably connected to the upper end of the support frame 42, and the other end is connected to the main frame 41.

[0053] In this embodiment, this structural design enables the support frame 42 to drive the fork arm linkage 44 during rotation, further enhancing the stability and structural compactness of the wheelchair. The fork arm linkage 44 not only serves as a connection and support but also provides additional stability during the folding and unfolding of the wheelchair, ensuring its reliability and safety in various usage scenarios.

[0054] Reference Figure 5 and Figure 6 As shown, in one embodiment, the brake assembly 5 includes a brake base plate 51, a crank handle 52, a brake plate 53, a connecting rod 54, and a return torsion spring 55. The brake base plate 51 is fixed to the frame assembly 4, and the crank handle 52 and brake plate 53 are respectively hinged to the brake base plate 51. The first end of the connecting rod 54 is hinged to the crank handle 52, and the second end of the connecting rod 54 is hinged to the brake plate 53. The return torsion spring 55 is mounted on the hinge axis between the brake base plate 51 and the brake plate 53, with one end of the return torsion spring 55 fixedly connected to the brake base plate 51 and the other end fixedly connected to the brake plate 53.

[0055] In this embodiment, the brake base plate 51, serving as the fixed foundation for the entire brake assembly 5, is mounted on the wheelchair frame assembly 4, providing stable support and a connection platform. The crank handle 52 and brake plate 53 are respectively mounted on the brake base plate 51 via hinge shafts, allowing them to rotate freely within a certain angle. The braking can be initiated and disengaged through simple back-and-forth pulling motions, offering flexible and stable operation. The brake plate 53 is hinged to the brake base plate 51, its main function being to directly press against the wheelchair wheels during braking to achieve a braking effect. The brake plate 53 is made of high-strength, wear-resistant material, ensuring good braking performance even under frequent use. The connecting rod 54, acting as a connector, is connected at one end to the crank handle 52 and at the other end to the brake plate 53. The connecting rod 54 transmits the operating force of the crank handle 52 to the brake plate 53, thereby achieving braking control of the wheels. A return torsion spring 55 is mounted on the hinge shaft between the brake base plate 51 and the brake plate 53, with one end fixed to the brake base plate 51 and the other end fixed to the brake plate 53. When the brake is released, the return torsion spring 55 automatically resets the brake plate 53, ensuring the stability and reliability of the brake assembly 5 in the non-braking state. When the user needs to activate the brakes, simply pull the crank handle 52 backward. The backward pull of the crank handle 52 is transmitted to the brake plate 53 through the connecting rod 54, causing it to rotate backward and press against the wheel, thus achieving rapid braking. When releasing the brakes, releasing the crank handle 52 causes the elastic force of the return torsion spring 55 to automatically return the brake plate 53 to its original position, effectively preventing continuous contact between the brake plate 53 and the wheel, reducing unnecessary wear, and improving the service life of the brake assembly 5.

[0056] In one embodiment, the glove tube 1 is connected to the frame assembly 4 via a folding backrest 7.

[0057] In this embodiment, the backrest 7 typically consists of two main parts: a fixed base 71 and a movable base 72. The fixed base 71 is used to connect to the frame assembly 4, and the movable base 72 is used to connect the handlebar sleeve 1 to the frame assembly 4. The fixed base 71 and the movable base 72 are connected by a hinge shaft, allowing the movable base 72 to rotate relative to the fixed base 71 within a certain angle range. When it is necessary to disassemble the handlebar structure to fold the wheelchair, first loosen the connection between the handlebar sleeve 1 and the movable base 72 of the backrest 7; that is, rotate the movable base 72 to pull it out of the handlebar sleeve 1, thereby releasing the relative fixation between the handlebar sleeve 1 and the frame assembly 4.

[0058] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0059] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," and "above" are used herein to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatial relative terms include not only the orientation of the component as depicted in the figures but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0061] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in sequences other than those illustrated or described herein.

[0062] This disclosure has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this disclosure to the described embodiments. Furthermore, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this disclosure, all of which fall within the scope of protection claimed by this disclosure. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A handle structure, characterized in that, include: Put the glove tube (1); A handle tube (2) is coaxially fitted inside the handle sleeve tube (1), and the wall of the handle tube (2) has a plurality of lifting holes (21) spaced apart along its axial direction; and The adjustment assembly (3) includes a locking member (31) and a fastener (32) fixed to the outer periphery of the handle tube (1). The locking member (31) passes through the fastener (32), the handle tube (1), and any one of the plurality of lifting holes (21). The end of the locking member (31) radially abuts against the wall of the handle tube (2). The locking member (31) is threadedly connected to the fastener (32).

2. The handle structure according to claim 1, characterized in that, The locking member (31) includes a smooth rod section (311) and a threaded section (312) that are connected to each other; The smooth rod section (311) passes through the lifting hole (21) and is radially inserted into the handle tube (2). The end of the smooth rod section (311) away from the threaded section (312) abuts against the tube wall of the handle tube (2). The threaded section (312) is threadedly connected to the fastener (32).

3. The handle structure according to claim 2, characterized in that, The polished rod section (311) has a guide chamfer (313) at one end away from the threaded section (312).

4. The handle structure according to claim 2, characterized in that, The locking member (31) further includes a screwing part (314), which is disposed on the threaded section (312) at one end away from the smooth rod section (311).

5. The handle structure according to claim 1, characterized in that, The handle tube (1) has a through hole, and the fastener (32) has a threaded hole. The threaded hole and the through hole are coaxially arranged so that the locking member (31) can pass through.

6. A wheelchair, characterized in that, The bicycle includes a frame assembly (4), a brake assembly (5), a pedal assembly (6), and a handlebar structure as described in any one of claims 1-5, wherein the handlebar sleeve (1) is connected to the frame assembly (4), the brake assembly (5) is disposed on both sides of the frame assembly (4), and the pedal assembly (6) is disposed at the bottom of the frame assembly (4).

7. The wheelchair according to claim 6, characterized in that, The frame assembly (4) includes: Two main frames (41); and Two support frames (42) are arranged crosswise and rotatably connected at the middle of the two support frames (42), and the bottom of the two support frames (42) are respectively rotatably connected to the two main frames (41).

8. The wheelchair according to claim 7, characterized in that, The frame assembly (4) also includes a fork arm link (44), one end of which is rotatably connected to the upper end of the support frame (42), and the other end is connected to the main frame (41).

9. The wheelchair according to claim 6, characterized in that, The brake assembly (5) includes a brake base plate (51), a rocker arm (52), a brake plate (53), a connecting rod (54), and a return torsion spring (55); wherein, The brake base plate (51) is fixed to the frame assembly (4); The crank (52) and the brake plate (53) are respectively hinged to the brake base plate (51); The first end of the connecting rod (54) is hinged to the rocker arm (52), and the second end of the connecting rod (54) is hinged to the brake plate (53); The reset torsion spring (55) is mounted on the hinge shaft between the brake base plate (51) and the brake plate (53). One end of the reset torsion spring (55) is fixedly connected to the brake base plate (51), and the other end is fixedly connected to the brake plate (53).

10. The wheelchair according to claim 6, characterized in that, The handlebar sleeve (1) is connected to the frame assembly (4) via a folding backrest (7).

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