A front wheel assembly structure adaptable to various sizes of wheels

Abstract

This utility model relates to the field of children's stroller technology and discloses a front wheel assembly structure that can adapt to various sizes of wheels. It includes a front fork and a movable wheel mounted on the front fork, the movable wheel being rotatably mounted on the front fork via an axle. A first washer and a second washer are respectively mounted on both sides of the front fork. The front fork of this utility model has two types of axle mounting holes, one at the top and one at the bottom, allowing for flexible selection of the mounting position according to different sizes of movable wheels. This makes the device adaptable to various sizes of movable wheels, enhancing its versatility and practicality. The first and second protective covers are snapped into the locking holes on the front fork via clips, making installation simple and secure. This completely seals and protects the mounting points of the axle and front fork, effectively preventing water and dust from entering, avoiding rust and wear of the axle due to contamination, extending the service life of the axle, and ensuring the normal use of the device.

Description

Technical Field

[0001] This utility model relates to the field of children's stroller technology, specifically a front wheel assembly structure that can be adapted to various wheel sizes. Background Technology

[0002] A stroller is a portable, manually propelled vehicle designed specifically for transporting children. It carries one or more children (typically newborns to 3-year-olds) and must be moved by an adult through pushing or pulling. As an important aid for children's travel, it combines safety, comfort, and functionality, making it a frequently used product in family childcare settings.

[0003] In the current stroller market, diverse wheel sizes have become a key feature to meet different usage scenarios and user needs. Common wheel diameters range from 10 inches (lightweight umbrella strollers) to 16 inches (high-view strollers or off-road strollers), with some special models even equipped with extra-large 20-inch wheels to adapt to complex terrain. However, this differentiated wheel diameter design directly leads to the need for separate development of the front fork assembly (the key structural component connecting the axle to the frame) for each wheel diameter. Each front fork assembly requires independent mold development, resulting in high mold costs, a complex supply chain, and limited user experience. Utility Model Content

[0004] The purpose of this invention is to provide a front wheel assembly structure that can be adapted to various wheel sizes, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a front wheel assembly structure adaptable to various wheel sizes, including a front fork, wherein a universal joint is mounted on the top of the front fork, and further comprising:

[0006] A movable wheel is mounted on the front fork, and the movable wheel is rotatably mounted on the front fork via an axle;

[0007] The first and second spacers are respectively installed on both sides of the front fork, and the first and second protective covers are respectively installed on the outer sides of the first and second spacers.

[0008] Preferably, the fork has a first wheel axle mounting hole and a second wheel axle mounting hole, and the wheel axle can pass through the first wheel axle mounting hole and the second wheel axle mounting hole.

[0009] Preferably, the movable wheel has a through hole at its center, and the wheel axle is rotatably mounted on the through hole of the movable wheel.

[0010] Preferably, the fork has a locking hole, and both the first protective cover and the second protective cover are fixedly installed with buckles.

[0011] Preferably, the first gasket and the second gasket are respectively fixedly connected with a first boss and a second boss, which can be snapped into the first wheel axle mounting hole and the second wheel axle mounting hole.

[0012] Preferably, the first gasket and the second gasket are respectively provided with mounting groove one and mounting groove two.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model features two types of wheel axle mounting holes on the front fork, one at the top and one at the bottom, allowing for flexible selection of the installation position according to different sizes of casters. This makes the device adaptable to various sizes of casters, enhancing its versatility and practicality. The first and second pads have protrusions that can snap into the wheel axle mounting holes where no wheel axle is installed, while mounting grooves can also engage with the wheel axle. This double-locking structure effectively restricts wheel axle displacement, significantly improving the stability of wheel axle installation. The Y-shaped symmetrical design of the front fork, with symmetrically distributed mounting holes on the two support rods, ensures more even force distribution after the caster is installed, further enhancing stability during use. The first and second protective covers engage with the locking holes on the front fork via snap-fit ​​mechanisms, making installation simple and secure. This completely seals and protects the mounting points of the wheel axle and front fork, effectively preventing water and dust from entering, avoiding rust and wear on the wheel axle due to contamination, extending the wheel axle's service life, and ensuring the normal operation of the device. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main structure of the front wheel assembly structure that can be adapted to various wheel sizes provided by this utility model;

[0016] Figure 2 A schematic diagram of the front fork structure provided by this utility model;

[0017] Figure 3 Schematic diagram of the first and second gaskets provided by this utility model;

[0018] Figure 4 A schematic diagram of the connection structure between the front fork and the movable wheel provided by this utility model.

[0019] In the diagram: 1. Front fork; 2. Transfer wheel; 3. Axle; 4. First protective cover; 5. Second protective cover; 6. First gasket; 7. Second gasket; 8. Axle mounting hole one; 9. Axle mounting hole two; 10. Mounting groove one; 11. Boss one; 12. Mounting groove two; 13. Boss two; 14. Locking hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 As shown, a front wheel assembly structure adaptable to various wheel sizes includes a front fork 1, with a mounting rod rotatably mounted on the top of the front fork 1 via a universal joint, allowing the front fork 1 to be mounted on a vehicle frame via the mounting rod; it also includes a movable wheel 2 mounted on the front fork 1, the movable wheel 2 being rotatably mounted on the front fork 1 via a wheel axle 3, connecting the movable wheel 2 to the front fork 1 via the wheel axle 3; a first gasket 6 and a second gasket 7, respectively mounted on both sides of the front fork 1, with a first protective cover 4 and a second protective cover 5 respectively mounted on the outer sides of the first gasket 6 and the second gasket 7, improving the stability of the wheel axle 3, and protecting the connection point internally with the first protective cover 4 and the second protective cover 5 to prevent external contamination.

[0022] It should be noted that the front fork 1 is equipped with two types of wheel axle mounting holes, one at the top and one at the bottom, which allows for flexible selection of the mounting position according to different specifications of the movable wheel 2. This makes the device adaptable to a variety of sizes of movable wheels 2, enhancing its versatility and practicality. The number of mounting holes on the front fork 1 is not limited to the number mentioned in this application, and mounting holes can be added according to the specifications of the wheel to assemble wheels of various sizes.

[0023] The front fork 1 has axle mounting hole 1 (8) and axle mounting hole 2 (9), through which axle 3 can pass. The center of the transfer wheel 2 has a through hole, and axle 3 is rotatably mounted on the through hole of the transfer wheel 2. The front fork 1 is Y-shaped with two symmetrical support rods. Each support rod has axle mounting hole 1 (8) and axle mounting hole 2 (9) installed vertically, for a total of four mounting holes. Depending on the size of the transfer wheel 2, the upper axle mounting hole 1 (8) or the lower axle mounting hole 2 (9) can be selected. During installation, first place the transfer wheel 2 inside the front fork 1, and then, according to the wheel size, pass the axle 3 through the through hole inside the transfer wheel 2 and the corresponding mounting hole to install the transfer wheel 2 on the front fork 1.

[0024] The front fork 1 has a locking hole 14. Both the first protective cover 4 and the second protective cover 5 are fixedly fitted with buckles. The locking hole 14 and the buckles correspond in position and size, and are symmetrically arranged vertically. The first protective cover 4 and the second protective cover 5 are engaged in the locking hole 14 via the buckles, and then installed at the mounting points of the front fork 1 and the wheel axle 3, protecting the wheel axle 3 internally to prevent contamination by water or dust. The first gasket 6 and the second gasket 7 are respectively fixedly connected with a first boss 11 and a second boss 13, which can be engaged with the wheel axle mounting holes 1 and 2 and 9. The first gasket 6 and the second gasket 7... The upper part is provided with mounting groove 10 and mounting groove 2 12 respectively; the boss 11 and boss 2 13 have the same structure and can be snapped into the wheel axle mounting hole 1 8 and wheel axle mounting hole 2 9. After the wheel axle 3 is installed into one of the mounting holes, the boss 11 and boss 2 13 are snapped into the other mounting hole. The mounting groove 10, mounting groove 2 12 and boss 11 and boss 2 13 are symmetrically arranged. When the boss is snapped into one of the mounting holes, the corresponding mounting groove can be snapped into the wheel axle 3 to improve the stability of the wheel axle 3. Finally, the protective cover is snapped into the snap hole 14 to seal the connection between the wheel axle 3 and the front fork 1.

[0025] Working principle: When installing the transfer wheel 2, depending on its size, you can choose either the upper axle mounting hole 8 or the lower axle mounting hole 9. During installation, first place the transfer wheel 2 inside the front fork 1. Then, according to the wheel's size, pass the axle 3 through the through hole inside the transfer wheel 2 and the corresponding mounting hole. This will install the transfer wheel 2 onto the front fork 1. The bosses 11 and 13 have the same structure and can be snapped into axle mounting holes 8 and 9. After the axle 3 is installed into one mounting hole, the corresponding bosses 11 and 13 snap into the other mounting hole. A mounting hole, mounting groove 10, mounting groove 2, and boss 11 and boss 2 13 are symmetrically arranged. When a boss is engaged with one of the mounting holes, the corresponding mounting groove can be engaged with the axle 3, improving the stability of the axle 3. The first protective cover 4 and the second protective cover 5 are both fixedly installed with buckles. The buckle hole 14 corresponds to the position and size of the buckle and is symmetrically arranged vertically. The first protective cover 4 and the second protective cover 5 are engaged with the buckle hole 14 and then installed at the mounting position of the front fork 1 and the axle 3, protecting the axle 3 internally and preventing it from being contaminated by water or dust, which would affect its use.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A front wheel assembly structure adaptable to various wheel sizes, comprising a front fork (1), wherein a universal joint is mounted on the top of the front fork (1), characterized in that, Also includes: A movable wheel (2) is mounted on the front fork (1), the movable wheel (2) being rotatably mounted on the front fork (1) via an axle (3); The first pad (6) and the second pad (7) are respectively installed on both sides of the front fork (1), and the first protective cover (4) and the second protective cover (5) are respectively installed on the outer side of the first pad (6) and the second pad (7).

2. The front wheel assembly structure adaptable to various wheel sizes according to claim 1, characterized in that: The fork (1) has a first wheel axle mounting hole (8) and a second wheel axle mounting hole (9), and the wheel axle (3) can pass through the first wheel axle mounting hole (8) and the second wheel axle mounting hole (9).

3. The front wheel assembly structure adaptable to various wheel sizes according to claim 1, characterized in that: The center of the movable wheel (2) has a through hole, and the wheel axle (3) is rotatably mounted on the through hole of the movable wheel (2).

4. The front wheel assembly structure adaptable to various wheel sizes according to claim 1, characterized in that: The fork (1) has a locking hole (14), and the first protective cover (4) and the second protective cover (5) are both fixedly installed with buckles.

5. A front wheel assembly structure adaptable to various wheel sizes according to claim 2, characterized in that: The first gasket (6) and the second gasket (7) are respectively fixedly connected with a first boss (11) and a second boss (13), which can be snapped into a first wheel axle mounting hole (8) and a second wheel axle mounting hole (9).

6. The front wheel assembly structure adaptable to various wheel sizes according to claim 1, characterized in that: The first gasket (6) and the second gasket (7) are respectively provided with mounting groove one (10) and mounting groove two (12).

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