BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a safety belt automatic adjustment apparatus and a child safety seat therewith, and more particularly, to a safety belt automatic adjustment apparatus and a child safety seat having advantages of automatic adjustment for a safety belt, simple structure, convenient operation and enhanced safety.

2. Description of the Prior Art

In order to enhance safety of riding in motor vehicles, a child safety seat is adapted for children at the age of 0 to 12 years. Besides the safety concern, convenience is another important topic of the child safety seat. For children of different ages and different body shapes, a safety belt on the child safety seat often needs to be adjusted. However, conventional safety belt adjustment is often troublesome. The safety belt passes through a bottom of the child safety seat and is exposed in front of the child safety seat. A bottom of the safety belt needs to be pulled by hand for adjusting a length of the safety belt, and the safety belt can be locked at a desired position by a webbing locking component inside, which is very inconvenient and not suitable for people's current needs. Therefore, it is necessary to provide an improved safety belt automatic adjustment apparatus with simple structure, convenient operation and enhanced safety for solving the aforementioned problems.

SUMMARY OF THE INVENTION

Therefore, an objective of the present invention is to provide a safety belt automatic adjustment apparatus and a child safety seat having advantages of automatic adjustment for a safety belt, simple structure, convenient operation and enhanced safety, for solving the aforementioned problems.

In order to achieve the aforementioned objective, the present invention discloses a safety belt automatic adjustment apparatus including a safety belt buckle fastening assembly, a safety belt retractor and a linking component. The safety belt buckle fastening assembly is rotatably connected to a seat body of a child safety seat and for connecting with a safety belt buckle. The safety belt retractor is used for retracting a safety belt, and the safety belt retractor includes a restraining assembly for restraining a movement of the safety belt in a predetermined direction. The linking component is installed between the safety belt buckle fastening assembly and the safety belt retractor, and the safety belt buckle fastening assembly rotates to drive the linking component and the restraining assembly, so as to restrain or release the safety belt winding around the safety belt retractor.

Preferably, the safety belt retractor further includes a retractor installation component, a rotating shaft, a first ratchet and a second ratchet. The safety belt winds around the rotating shaft, the first ratchet is connected to an end of the rotating shaft, and the second ratchet is connected to another end of the rotating shaft.

Preferably, the restraining assembly includes a first restraining component installed on the retractor installation component in a swingable manner and for selectively engaging with or separating from the first ratchet, and a rotation in a first direction of the rotating shaft is restrained when the first ratchet is engaged with the first restraining component.

Preferably, the first restraining component is resiliently installed on the retractor installation component by a first resilient component.

Preferably, the restraining assembly includes a second restraining component installed on the retractor installation component in a swingable manner and for selectively engaging with or separating from the second ratchet, and a rotation in a second direction opposite to the first direction of the rotating shaft is restrained when the second ratchet is engaged with the second restraining component.

Preferably, the second restraining component is resiliently installed on the retractor installation component by a second resilient component.

Preferably, a first end of the linking component is fixed on the safety belt buckle fastening assembly, and a second end of the linking component abuts against the first restraining component.

Preferably, an abutting surface is formed on the second end of the linking component, and a mating surface is formed on the first restraining component for abutting against the abutting surface.

Preferably, the safety belt buckle fastening assembly includes an installation component, a rotary shaft installed on the installation component, and an insertion component connected to the rotary shaft and for connecting with the safety belt buckle.

In order to achieve the aforementioned objective, the present invention further discloses a child safety seat including a seat body, a safety belt, a safety belt buckle connected to the safety belt, and a safety belt automatic adjustment apparatus for connecting with the safety belt buckle. The safety belt automatic adjustment apparatus includes a safety belt buckle fastening assembly, a safety belt retractor and a linking component. The safety belt buckle fastening assembly is rotatably connected to the seat body and for connecting with the safety belt buckle. The safety belt retractor is used for retracting the safety belt, and the safety belt retractor includes a restraining assembly for restraining a movement of the safety belt in a predetermined direction. The linking component is installed between the safety belt buckle fastening assembly and the safety belt retractor, and the safety belt buckle fastening assembly rotates to drive the linking component and the restraining assembly, so as to restrain or release the safety belt winding around the safety belt retractor.

In summary, the safety belt retractor can be locked or released by adjusting statuses of the safety belt buckle fastening assembly of the safety belt automatic adjustment apparatus of the present application, so as to lock or release the safety belt automatically. When a child sits on the child safety seat and the safety belt buckle fastening assembly buckles with the safety belt buckle, the safety belt can be tightened automatically, which has advantages of automatic adjustment for the safety belt without manual adjustment, simple structure, convenient operation and enhanced safety.

These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.

