A wheel fork assembly

Abstract

The utility model discloses a kind of wheel fork assemblies, including wheel fork body, curved arm and damping assembly, the wheel fork body includes installation base, rotating shaft and mounting bracket, mounting bracket is rotated on installation base by rotating shaft;Curved arm one end is fixedly installed on the installation base, and damping assembly is rotatably installed on the other end of curved arm, and damping assembly includes damper and shock absorbing spring.The utility model sets up damper and shock absorbing spring on curved arm, can effectively absorb the impact force generated when wheelchair starts, climbs, passes barrier or stops;Damping assembly is rotatably cooperated with curved arm and wheel fork body, can reduce the influence of impact force to user to minimum, greatly improve the stability and comfort when riding.

Description

Technical Field

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

[0002] A wheelchair is a wheeled chair that helps replace walking. It is an important means of mobility for the injured, sick, and disabled for home rehabilitation, transportation, medical visits, and outdoor activities. During operation, such as starting, going uphill, encountering obstacles, or stopping, a wheelchair is subjected to varying degrees of impact. To improve comfort, shock absorption is necessary to reduce the impact of these forces on the patient in the wheelchair. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a wheel fork assembly with good shock absorption, which can improve the comfort of wheelchairs.

[0004] Therefore, the technical solution of this utility model is: a wheel fork assembly, including a wheel fork body, a crank arm, and a shock absorption assembly. The wheel fork body includes a mounting base, a rotating shaft, and a mounting bracket. The mounting bracket rotates on the mounting base via the rotating shaft. One end of the crank arm is fixedly mounted on the mounting base, and a shock absorption assembly is rotatably mounted on the other end of the crank arm. The shock absorption assembly includes a damper and a shock absorption spring.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the crank arm includes a first connecting part and a crank rod, which are fixed as one piece; a notch is provided on the crank rod, and one end of the damper is rotatably installed in the notch; the first connecting part is fixed on the mounting base.

[0006] Based on the above solution and as a preferred embodiment of the above solution: the mounting base has a first protrusion on the side facing the mounting frame, and the mounting frame has a second protrusion on the side facing the mounting base; a dustproof ring is provided between the mounting base and the mounting frame, respectively fitted onto the outside of the first protrusion and the second protrusion.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: at least one ring of recessed or raised portions is provided on the end faces of the first protrusion and the second protrusion.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the rotating shaft has an I-shaped structure, and a through hole is provided between the first protrusion and the second protrusion, and the through hole is rotatably engaged with the rotating shaft.

[0009] Compared with the prior art, the beneficial effects of this utility model are: Dampers and shock-absorbing springs are installed on the articulated arms to effectively absorb the impact force generated when the wheelchair starts, goes uphill, goes over obstacles, or stops; the shock-absorbing components work in conjunction with the rotation of the articulated arms and wheel forks to minimize the impact force on the user, greatly improving the stability and comfort of riding.

[0010] A dustproof ring is installed between the mounting base and the mounting bracket, and is respectively fitted on the outside of the first protrusion and the second protrusion. This effectively prevents dust and impurities from entering the rotating mating parts, avoids wear of internal parts caused by dust and impurities, reduces the probability of failure, and thus extends the overall service life of the wheel fork assembly. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 for Figure 2 A magnified view of a portion of the image; Figure 4 This is an exploded view of the wheel fork body of this utility model.

[0012] The components are labeled as follows: wheel fork body 1, mounting base 11, rotating shaft 12, mounting bracket 13, dustproof ring 14, first protrusion 15, second protrusion 16, recessed part 17, crank arm 2, first connecting part 21, crank 22, notch 23, shock absorption assembly 3, damper 31, shock absorption spring 32. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0015] See the attached drawings. The wheel fork assembly described in this embodiment includes a wheel fork body 1, a crank arm 2, and a shock-absorbing assembly 3. The wheel fork body 1 includes a mounting base 11, a rotating shaft 12, a mounting bracket 13, and a dustproof ring 14. The mounting base 11 has a first protrusion 15 on the side facing the mounting bracket 12, and the mounting bracket 13 has a second protrusion 16 on the side facing the mounting base 11. A dustproof ring 14 is provided between the mounting base 11 and the mounting bracket 13, respectively fitted onto the outer sides of the first protrusion 15 and the second protrusion 16. The dustproof ring 14 can effectively prevent dust and impurities from entering the rotating mating parts, avoiding wear on internal parts caused by dust and impurities. Simultaneously, the end faces of the first protrusion 15 and the second protrusion 16 have recessed portions 17.

[0016] The mounting bracket 13 rotates on the mounting base 11 via a rotating shaft 12. The rotating shaft 12 has an I-shaped structure. A through hole is provided between the first protrusion 15 and the second protrusion 16. The through hole is rotated and engaged with the rotating shaft 12 to ensure the structural stability of the wheel fork body 1 when it rotates.

[0017] The articulated arm 2 includes a first connecting part 21 and a curved rod 22, which are fixed as one unit. The first connecting part 21 is fixedly installed on the mounting base 11, that is, the mounting frame 13 can rotate relative to the articulated arm 2. The curved rod 21 is provided with a notch 23, and a shock-absorbing component 3 is rotatably installed at the notch 23. The shock-absorbing component 3 includes a damper 31 and a shock-absorbing spring 32. One end of the damper 31 is rotatably installed at the notch 23, and the other end is connected to the wheelchair or electric bicycle.

[0018] When a wheelchair wheel encounters an obstacle (such as a small step or bump), the wheel first contacts the obstacle and experiences an upward impact force. This impact force is transmitted through the axle to the mounting bracket of the wheel fork, causing the mounting bracket to rotate upwards around its axis. This rotation of the mounting bracket directly acts on the connected shock absorption assembly, causing the shock absorption springs within the assembly to compress. Simultaneously, the damper activates, and the shock absorption process is officially triggered.

[0019] By compressing and deforming the spring, most of the rigid impact force is converted into the elastic potential energy of the spring, initially slowing down the speed and amplitude of the upward rotation of the mounting frame and preventing the impact force from being directly transmitted to the wheelchair body. The resistance of the damping medium (such as oil) is used to weaken the rebound force after the spring is compressed, preventing secondary vibration caused by the rapid rebound of the spring and making the release of impact force more gradual.

[0020] As the wheel passes the obstacle, the impact gradually dissipates, and the components begin to reset and return to normal driving mode. With the impact weakening, the compressed damping spring slowly releases its elastic potential energy, pushing the mounting bracket to rotate in the opposite direction around the axis of rotation, gradually straightening the wheel. The damper continues to function, controlling the speed of the spring's reset and preventing bumps caused by rapid reset of the mounting bracket. Simultaneously, the interlocking structure of the I-shaped axis of rotation and the protrusion limits the rotation range of the mounting bracket, ensuring the stability of the wheel fork body during the reset process, ultimately returning it to its normal driving position. The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A wheel fork assembly, characterized in that: The device includes a wheel fork body, a crank arm, and a shock absorption assembly. The wheel fork body includes a mounting base, a rotating shaft, and a mounting bracket. The mounting bracket rotates on the mounting base via the rotating shaft. One end of the crank arm is fixedly mounted on the mounting base, and a shock absorption assembly is rotatably mounted on the other end of the crank arm. The shock absorption assembly includes a damper and a shock absorption spring.

2. The wheel fork assembly as described in claim 1, characterized in that: The crank arm includes a first connecting part and a crank rod, which are fixed together as one unit; a notch is provided on the crank rod, and one end of the damper is rotatably installed in the notch; the first connecting part is fixed on the mounting base.

3. The wheel fork assembly as described in claim 1, characterized in that: The mounting base has a first protrusion on the side facing the mounting frame, and the mounting frame has a second protrusion on the side facing the mounting base; a dustproof ring is provided between the mounting base and the mounting frame, respectively fitted on the outside of the first protrusion and the second protrusion.

4. A wheel fork assembly as described in claim 3, characterized in that: The end faces of the first protrusion and the second protrusion are provided with at least one ring of recessed or raised portions.

5. A wheel fork assembly as described in claim 3, characterized in that: The rotating shaft has an I-shaped structure, with a through hole between the first and second protrusions, which is rotatably engaged with the rotating shaft.

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