Quick-release type retractable fender device for wheelchair

Abstract

The application discloses a quick-release type telescopic mudguard device for a wheelchair, and belongs to the field of wheelchair accessories. The mudguard device comprises a fixing clamp used for being connected with a handle rod body of the wheelchair, a movable clamp fixedly installed on the fixing clamp, and a telescopic mudguard rotatably installed on the movable clamp. The fixing clamp is sleeved on the handle rod body of the wheelchair. The movable clamp comprises a pin shaft fixedly installed on the fixing clamp. A clamping piece in the shape of a ring is sleeved on the pin shaft. A handle is fixedly installed on the clamping piece. One end of the handle, which is away from the clamping piece, is fixedly connected with the telescopic mudguard. A screw hole is formed in one end of the pin shaft, which is away from the fixing clamp. A knob is screwed in the screw hole and abuts against the outer wall surface of the handle. The mudguard device can be disassembled by only loosening the knob and high-strength screws, is convenient to maintain and install, has good operability, and is helpful to popularization and use.

Description

Technical Field

[0001] This application relates to the field of wheelchair accessories technology, specifically a quick-release retractable mudguard device for wheelchairs. Background Technology

[0002] Wheelchairs are an important daily mobility tool for people with mobility impairments, used in a variety of road conditions. In rainy weather, on muddy roads, or on wet surfaces, wheelchair wheels easily splash mud and water as they turn. This splashed mud and water not only soils the user's clothes and shoes, causing great inconvenience and affecting their travel experience, but also, over time, the mud and water adhering to the wheelchair's frame and transmission components accelerates corrosion and rust, reducing the wheelchair's lifespan and increasing maintenance costs.

[0003] Existing wheelchairs often lack mudguards or have insufficient mudguard length, and mudguards generally suffer from several defects. Firstly, most mudguards are fixedly installed, requiring specialized tools such as screwdrivers and wrenches for installation and removal, making the process cumbersome, time-consuming, and laborious—extremely difficult for users with mobility impairments. Furthermore, fixed mudguards cannot be easily removed when not in use, such as on dry, clean surfaces, affecting the wheelchair's overall aesthetics and maneuverability. Secondly, traditional mudguards have a fixed size, appearing only at the top and absent at the rear of the wheels. For example, in rainy or muddy conditions, fixed-size mudguards do not provide sufficient protective area, allowing mud and water to splash onto the user and wheelchair components, failing to effectively block water and mud.

[0004] Therefore, this application provides a quick-release retractable mudguard device for wheelchairs to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a quick-release retractable mudguard device for wheelchairs, which aims to solve the problems of poor fixation and protection effect of existing wheelchair mudguard structures mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a quick-release retractable mudguard device for wheelchairs, comprising a fixing clamp for connecting to the wheelchair push rod, a movable clamp fixedly mounted on the fixing clamp, and a retractable mudguard rotatably mounted on the movable clamp. The fixing clip is attached to the wheelchair push rod; The movable clamp includes a pin fixedly mounted on a fixed clamp. A ring-shaped clamping piece is sleeved on the pin, and a handle is fixedly mounted on the clamping piece. The end of the handle away from the clamping piece is fixedly connected to a telescopic mudguard. A screw hole is formed at the end of the pin away from the fixed clamp, and a knob is screwed into the screw hole, abutting against the outer wall of the handle. Thus, in use, the wheelchair is placed on a stable surface, ensuring it is stationary. The fixed clamp is picked up and tightened at a suitable height on the wheelchair push rod using high-strength screws. The telescopic mudguard is picked up, and the clamping piece and handle at the end of the mudguard are sleeved onto the pin. Then, the knob is removed and screwed into the screw hole at the end of the pin. During tightening, the end face of the knob gradually approaches and presses against the outer wall of the handle, thereby fixing the handle and securing the telescopic mudguard. This completes the quick installation. For adjustment or disassembly, simply loosening the knob and high-strength screws removes the entire device. Maintenance is convenient, installation is easy, and operation is good, which helps promote its widespread use.

[0007] Preferably, in order to facilitate rotation angle, the handle is provided with a socket that matches the pin, the center of the clamp is concentric with the socket, and the clamp and the handle are rotatably mounted on the pin to ensure stable shielding.

[0008] Preferably, to improve stability, a rubber pad is sandwiched between the fixing clip and the connecting surface of the wheelchair push rod, and anti-slip texture is provided on the side of the knob that abuts against the outer wall of the handle, so that the handle can remain stable after the angle is adjusted, thereby improving the fixing effect.

[0009] Preferably, in order to adjust the position of the mudguard, the telescopic mudguard is composed of at least three independent plates, including a first plate, a second plate, and a third plate. The end of the first plate is fixedly connected to the end of the handle. The first, second, and third plates are curved, and the curvature of the first, second, and third plates is adapted to the curvature of the wheelchair wheels. The first, second, and third plates are nested in sequence to effectively block mud and water splashes and protect the user's clothing and wheelchair parts.

[0010] Preferably, for ease of positioning, the inner diameter of the first section plate is larger than the outer diameter of the second section plate, the outer diameter of the second section plate is larger than the outer diameter of the third section plate, and matching positioning holes are provided on the outer side walls of the first, second, and third sections plate, with positioning pins inserted into the positioning holes for greater stability and reliability.

[0011] Preferably, to improve structural strength, a first guide protrusion is fixedly installed on the second section plate, and a first guide groove adapted to the first guide protrusion and consistent with the curvature of the first section plate is formed in the first section plate. The first guide protrusion is slidably installed in the first guide groove. A second guide protrusion is fixedly installed on the third section plate, and a second guide groove adapted to the second guide protrusion and consistent with the curvature of the second section plate is formed in the second section plate. The second guide protrusion is slidably installed in the second guide groove, thereby enhancing the overall structural strength of the telescopic mudguard and preventing twisting deformation during telescopic movement.

[0012] This mudguard device allows for quick installation. Place the wheelchair on a stable surface, ensuring it is stationary. Pick up the retaining clip and tighten it at the appropriate height on the wheelchair's push rod using high-strength screws. Then, pick up the telescopic mudguard and attach the clip and handle to the pin. Next, remove the knob and screw it into the threaded hole at the pin end. As you tighten, the knob's end face gradually approaches and presses against the outer wall of the handle, thus securing the handle and fixing the telescopic mudguard in place. Adjustment or disassembly is simple; just loosen the knob and high-strength screws to remove the entire device. It is easy to maintain, convenient to install, and highly operable, making it suitable for widespread use.

[0013] This mudguard device features a telescopic design, allowing the length to be flexibly adjusted according to the size of the wheelchair wheels and different road conditions. This effectively blocks mud and water splashes, protecting the user's clothing and wheelchair components. Attached Figure Description

[0014] Figure 1 A schematic diagram of a quick-release retractable mudguard device for a wheelchair in its retracted state; Figure 2 A schematic diagram of a quick-release retractable mudguard device for a wheelchair in its extended state; Figure 3 A schematic cross-sectional view of a quick-release retractable mudguard device for wheelchairs; Figure 4 A schematic cross-sectional view of a quick-release retractable mudguard device for wheelchairs; Figure 5 for Figure 2 Enlarged view of point A in the middle; Figure 6 for Figure 3 Enlarged diagram of point B in the middle.

[0015] In the picture: 1. Wheelchair push rod body; 2. Fixing clip; 3. Movable clip; 31. Pin; 32. Clip plate; 33. Handle; 34. Screw hole; 35. Knob; 36. Insertion hole; 37. Rubber pad; 38. Anti-slip texture; 4. Telescopic mudguard; 41. First section plate; 42. Second section plate; 43. Third section plate; 44. Positioning hole; 45. Positioning pin; 46. First guide protrusion; 47. First guide groove; 48. Second guide protrusion; 49. Second guide groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Example 1 This embodiment provides a quick-release retractable mudguard device for wheelchairs, such as... Figure 1-6 As shown, the mudguard device includes a fixed clamp 2 for connecting to the wheelchair push rod 1, a movable clamp 3 fixedly mounted on the fixed clamp 2, and a telescopic mudguard 4 rotatably mounted on the movable clamp 3. The fixing clip 2 is attached to the wheelchair push rod 1; The movable clip 3 includes a pin 31 fixedly installed on the fixed clip 2. A ring-shaped clip 32 is sleeved on the pin 31. A handle 33 is fixedly installed on the clip 32. One end of the handle 33 away from the clip 32 is fixedly connected to the telescopic mudguard 4. A screw hole 34 is opened on the end of the pin 31 away from the fixed clip 2. A knob 35 that abuts against the outer wall of the handle 33 is screwed into the screw hole 34.

[0018] When using the device, place the wheelchair on a stable surface and ensure it is stationary. Pick up the fixing clip 2 and tighten it at a suitable height on the wheelchair push rod 1 using high-strength screws. Pick up the telescopic mudguard 4 and place the clip 32 at the end of the telescopic mudguard 4, along with the handle 33, onto the pin 31. Then, take out the knob 35 and screw it into the screw hole 34 at the end of the pin 31. During the tightening process, the end face of the knob 35 gradually approaches and presses against the outer wall of the handle 33, thereby fixing the handle 33 and securing the telescopic mudguard 4. This completes the quick installation. For adjustment or disassembly, simply loosen the knob 35 and the high-strength screws to remove the entire device. It is easy to maintain, convenient to install, and easy to operate, which helps to promote its use.

[0019] Specifically, the handle 33 has a socket 36 that matches the pin 31. The center of the clip 32 is concentric with the socket 36. The clip 32 and the handle 33 are rotatably mounted on the pin 31. In use, observe the width of the telescopic mudguard 4 and the actual distance to the tire, and adjust the angle of the handle 33 as needed so that the telescopic mudguard 4 covers the tire precisely to ensure stable coverage.

[0020] More specifically, a rubber pad 37 is clamped between the fixing clip 2 and the connecting surface of the wheelchair push rod 1, and anti-slip texture 38 is provided on the side of the knob 35 that abuts against the outer wall of the handle 33.

[0021] When in use, the rubber pad 37 increases the friction between the fixing clip 2 and the wheelchair push rod 1, preventing the telescopic mudguard 4 from loosening or falling off due to vibration or bumps during use. At the same time, the anti-slip texture 38 on the knob 35 further increases the friction between it and the handle 33, so that the handle 33 can remain stable after angle adjustment, thus improving the fixing effect.

[0022] Example 2 Unlike Embodiment 1, the telescopic mudguard 4 needs to be adjusted to different lengths at different times due to weather and road conditions for passenger use. However, the existing fixed mudguard is not adjustable and has shortcomings. Therefore, the telescopic mudguard 4 is composed of at least three independent plates, including a first plate 41, a second plate 42, and a third plate 43. The end of the first plate 41 is fixedly connected to the end of the handle 33. The first plate 41, the second plate 42, and the third plate 43 are curved and their curvature is adapted to the curvature of the wheelchair wheel. The first plate 41, the second plate 42, and the third plate 43 are nested in sequence.

[0023] When in use, the retractable structure allows the retractable mudguard 4 to be flexibly adjusted in length according to the size of the wheelchair wheels and different road conditions, effectively blocking mud and water splashes and protecting the user's clothing and wheelchair parts.

[0024] Specifically, the inner diameter of the first plate 41 is larger than the outer diameter of the second plate 42, the outer diameter of the second plate 42 is larger than the outer diameter of the third plate 43, and the outer walls of the first plate 41, the second plate 42 and the third plate 43 are all provided with matching positioning holes 44, and positioning pins 45 are inserted into the positioning holes 44.

[0025] When in use, if the length of the mudguard needs to be adjusted, pull the second section plate 42 and the third section plate 43 respectively to make them slide within the first section plate 41 and the second section plate 42 to adjust to the appropriate length. Then, by inserting the positioning pin 45 through the corresponding positioning hole 44, the first section plate 41, the second section plate 42 and the third section plate 43 are fixed in the required telescopic position, which is more stable and reliable.

[0026] More specifically, a first guide protrusion 46 is fixedly installed on the second section plate 42, and a first guide groove 47 that matches the first guide protrusion 46 and has the same curvature as the first section plate 41 is opened in the first section plate 41. The first guide protrusion 46 is slidably installed in the first guide groove 47. A second guide protrusion 48 is fixedly installed on the third section plate 43, and a second guide groove 49 that matches the second guide protrusion 48 and has the same curvature as the second section plate 42 is opened in the second section plate 42. The second guide protrusion 48 is slidably installed in the second guide groove 49.

[0027] In use, the first guide protrusion 46 slides in conjunction with the first guide groove 47, and the second guide protrusion 48 slides in conjunction with the second guide groove 49. This not only guides the second section plate 42 to slide accurately within the first section plate 41, and the third section plate 43 to slide accurately within the second section plate 42, but also enhances the overall structural strength of the telescopic mudguard 4 and prevents twisting and deformation during telescopic movement.

[0028] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A quick-release retractable mudguard device for wheelchairs, comprising a fixing clip (2) for connecting to a wheelchair push rod (1), a movable clip (3) fixedly mounted on the fixing clip (2), and a retractable mudguard (4) rotatably mounted on the movable clip (3), characterized in that: The fixing clip (2) is clamped onto the wheelchair push rod (1); The movable clamp (3) includes a pin (31) fixedly installed on the fixed clamp (2). A ring-shaped clamping piece (32) is sleeved on the pin (31). A handle (33) is fixedly installed on the clamping piece (32). One end of the handle (33) away from the clamping piece (32) is fixedly connected to the telescopic mudguard (4). A screw hole (34) is opened on one end of the pin (31) away from the fixed clamp (2). A knob (35) that abuts against the outer wall of the handle (33) is screwed into the screw hole (34).

2. The quick-release retractable mudguard device for wheelchairs according to claim 1, characterized in that: The handle (33) has a socket (36) that is compatible with the pin (31). The center of the clamp (32) is concentric with the socket (36). The clamp (32) and the handle (33) are rotatably mounted on the pin (31).

3. The quick-release retractable mudguard device for wheelchairs according to claim 1, characterized in that: A rubber pad (37) is clamped between the fixing clip (2) and the wheelchair push rod (1) connecting surface, and an anti-slip texture (38) is provided on the side of the knob (35) that abuts against the outer wall of the handle (33).

4. The quick-release retractable mudguard device for wheelchairs according to claim 1, characterized in that: The telescopic mudguard (4) is composed of at least three independent plates, including a first plate (41), a second plate (42), and a third plate (43). The end of the first plate (41) is fixedly connected to the end of the handle (33). The first plate (41), the second plate (42), and the third plate (43) are curved. The curvature of the first plate (41), the second plate (42), and the third plate (43) is adapted to the curvature of the wheelchair wheel. The first plate (41), the second plate (42), and the third plate (43) are nested in sequence.

5. A quick-release retractable mudguard device for wheelchairs according to claim 4, characterized in that: The inner diameter of the first section plate (41) is larger than the outer diameter of the second section plate (42), and the outer diameter of the second section plate (42) is larger than the outer diameter of the third section plate (43). The outer walls of the first section plate (41), the second section plate (42) and the third section plate (43) are provided with matching positioning holes (44), and positioning pins (45) are inserted into the positioning holes (44).

6. A quick-release retractable mudguard device for wheelchairs according to claim 5, characterized in that: A first guide protrusion (46) is fixedly installed on the second section plate (42). A first guide groove (47) that is adapted to the first guide protrusion (46) and has the same curvature as the first section plate (41) is opened in the first section plate (41). The first guide protrusion (46) is slidably installed in the first guide groove (47). A second guide protrusion (48) is fixedly installed on the third section plate (43). A second guide groove (49) that is adapted to the second guide protrusion (48) and has the same curvature as the second section plate (42) is opened in the second section plate (42). The second guide protrusion (48) is slidably installed in the second guide groove (49).

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