Granted Patent B2

US 12,508,838 · App. 18/399,730 · Granted Dec 30, 2025

Inventor: Wei Li (Guangdong, CN)

Assignee: DONGGUAN JINWANG CHILDREN PRODUCTS CO. LTD.

B60B33/06

Abstract

Claims (26)

1 . A wheel assembly device ( 10 ), comprising:

a connection base ( 1 );

a wheel assembly ( 2 ) that is deployable; and

a positioning assembly configured to position the wheel assembly ( 2 ), wherein:

the wheel assembly ( 2 ) is movably connected to the connection base ( 1 ) and switchable between a deployed position and a storage position;

the connection base ( 1 ) has a positioning space ( 11 ), the wheel assembly ( 2 ) being configured to rotate to an interior of the positioning space ( 11 ) when the wheel assembly ( 2 ) is at the deployed position, and rotate to an exterior of the positioning space ( 11 ) when the wheel assembly ( 2 ) is at the storage position; and

the positioning assembly comprises a first positioning member and a second positioning member, the first positioning member being configured to cooperate with the positioning space ( 11 ) to position the wheel assembly ( 2 ) at the deployed position, and the second positioning member being configured to cooperate with the first positioning member to position the wheel assembly ( 2 ) at the storage position.

2 . The wheel assembly device ( 10 ) according to claim 1 , wherein the first positioning member comprises a connection shaft ( 3 ) disposed at the connection base ( 1 ) and a sliding groove ( 4 ) formed at the wheel assembly ( 2 ), the connection shaft ( 3 ) being slidably connected to the sliding groove ( 4 ) to enable the wheel assembly ( 2 ) to move to the interior of the positioning space ( 11 ) or the exterior of the positioning space ( 11 ), wherein:

two ends of the sliding groove ( 4 ) have a first engagement groove ( 41 ) and a second engagement groove ( 42 ), respectively, the first engagement groove ( 41 ) being located below the second engagement groove ( 42 );

the connection shaft ( 3 ) is configured to engage in the first engagement groove ( 41 ) when the wheel assembly ( 2 ) is at the deployed position, and engage and rotate in the second engagement groove ( 42 ) to switch the wheel assembly ( 2 ) to the deployed position when the wheel assembly ( 2 ) is at the storage position.

3 . The wheel assembly device ( 10 ) according to claim 2 , wherein at least one connection opening ( 43 ) is formed between the first engagement groove ( 41 ) and the second engagement groove ( 42 ), the connection opening ( 43 ) having a width smaller than a width of the first engagement groove ( 41 ) and/or a width of the second engagement groove ( 42 ), and the connection opening ( 43 ) being compressed and deformed in response to the connection shaft ( 3 ) passing through the connection opening ( 43 ),

wherein the wheel assembly ( 2 ) has a deformation space ( 5 ) located at a side of the sliding groove ( 4 ) to enable the connection opening ( 43 ) to be deformed.

4 . The wheel assembly device ( 10 ) according to claim 3 , wherein two connection openings ( 43 ) are formed between the first engagement groove ( 41 ) and the second engagement groove ( 42 ), one of the two connection openings ( 43 ) being formed between and in communication with the first engagement groove ( 41 ) and the sliding groove ( 4 ), and another one of the two connection openings ( 43 ) being formed between and in communication with the second engagement groove ( 42 ) and the sliding groove ( 4 ).

5 . The wheel assembly device ( 10 ) according to claim 3 , wherein the deformation space ( 5 ) comprises two through holes spaced apart from each other, the sliding groove ( 4 ) being located between the two through holes.

6 . The wheel assembly device ( 10 ) according to claim 3 , wherein:

the second positioning member comprises a positioning protrusion ( 6 ) disposed at the wheel assembly ( 2 ) and a positioning portion ( 7 ) disposed at the connection base ( 1 ); and

the positioning protrusion ( 6 ) is configured to engage with the positioning portion ( 7 ) to position the wheel assembly ( 2 ) at the storage position when the wheel assembly ( 2 ) is at the storage position.

7 . The wheel assembly device ( 10 ) according to claim 6 , wherein the positioning protrusion ( 6 ) is an elastic block that has elasticity.

8 . The wheel assembly device ( 10 ) according to claim 6 , wherein:

the connection base ( 1 ) is provided with at least two stop plates ( 12 ) extending downwards, the positioning space ( 11 ) being formed between the two stop plates ( 12 );

when the wheel assembly ( 2 ) is at the deployed position, the wheel assembly ( 2 ) is inserted into the positioning space ( 11 ), and the connection shaft ( 3 ) is engaged in the first engagement groove ( 41 ), the wheel assembly ( 2 ) being positioned at the deployed position under an action of the stop plates ( 12 ) and the first engagement groove ( 41 ); and

when the wheel assembly ( 2 ) is at the storage position, the connection shaft ( 3 ) moves from the first engagement groove ( 41 ) into the second engagement groove ( 42 ), the positioning protrusion ( 6 ) being engaged with the positioning portion ( 7 ) to position the wheel assembly ( 2 ) at the storage position.

9 . The wheel assembly device ( 10 ) according to claim 1 , wherein:

the wheel assembly ( 2 ) comprises a roller ( 21 ) and a mounting base ( 22 ), the roller ( 21 ) being rotatably connected to a lower end of the mounting base ( 22 ), and the mounting base ( 22 ) being rotatably connected to the connection base ( 1 );

when the wheel assembly ( 2 ) is located at the deployed position, at least part of the mounting base ( 22 ) is located in the positioning space ( 11 ), and the roller ( 21 ) is located outside the positioning space ( 11 ); and

when the wheel assembly ( 2 ) is located at the storage position, the mounting base ( 22 ) is located outside the positioning space ( 11 ).

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (40)