Patent Application
20250136038
The present application relates to a three-point safety belt for an automobile seat, and in particular relates to a safety belt lower anchorage front-back adjustment structure.
The safety belt has continuously played a key role as one of the indispensable safety components of automobiles. The safety belt structure commonly used in automobiles is a three-point safety belt, which consists of a safety belt retractor, a safety belt guide outlet component, a buckle component, a lower anchor, safety belt webbing and a tongue. The safety belt retractor and the safety belt guide outlet component are fixedly mounted to a B-pillar of an automobile or being fixedly mounted at a shoulder position of a seat backrest, and the buckle component and the lower anchor are fixedly mounted at two sides of the automobile seat.
With the expansion of the automobile market, market competition is also increasingly fierce, and the requirements of customers for the quality, refinement and comfort of automobile products are also increasingly higher. The automobile seat is one of the components of vehicle contact and most frequent use, and the automobile seat acts as the first product of which the customer is aware. And as automobile market demands have changed, zero-gravity seats have emerged. A zero-gravity mode of the zero-gravity seat being: a front end of a seat frame being raised up, a backrest being tipped back, and a leg support being in a slightly inclined posture.
Zero-gravity seats realize multiple sitting posture modes for an occupant, such as a conventional sitting posture mode, a multi-angle sitting posture mode and a zero-gravity sitting posture mode; however, with fixed mounting of a conventional three-point safety belt lower anchorage (a buckle component and a lower anchor), as an angle of the seat is adjusted, an angle between the thighs and the upper body of the occupant also changes, with the result that the safety belt is in an unsafe wearing state and an uncomfortable wearing state. In addition, differences in body type between different occupants also cause the fixed safety belt to be in an unsafe wearing state and an uncomfortable wearing state.
In view of this, the present application provides a safety belt lower anchorage front-back adjustment structure, for the purpose of enabling a safety belt, under different sitting posture modes, to provide an occupant with a more comfortable wearing experience, and achieve a good restraint effect on the occupant, increasing riding safety.
To achieve the above object, technical solutions of the present application are as follows:
A safety belt lower anchorage front-back adjustment structure may have a bottom base and a seat frame that is mounted on the bottom base. A support base that is respectively mounted on the bottom base at positions corresponding to a left side and a right side of the seat frame. A sliding component is provided on each support base. The two sliding components are able to slide forward and backward on the corresponding support base. A driving assembly is provided between the sliding component and the corresponding support base, used for driving the sliding component to slide forward and backward.
Among the two sliding components, a buckle is fixedly mounted on one sliding component, and a lower anchor is fixedly mounted on the other sliding component.
Using this structure, by means of the front-back motion of the sliding component driven by the driving assembly, front-back adjustment of the safety belt lower anchorage is realized, and such a structure has the advantages of a simple structure and high reliability. By means of adjusting the position of the safety belt lower anchorage, even for occupants with different body types and different seat modes, the safety belt can still ensure a good restraining effect on the occupant, and the occupant also has a good wearing experience.
Preferably, the support base comprises an inner support base and an outer support base that is fixedly mounted to an outer side of the inner support base by means of a screw, the inner support base being fixedly fitted to a side part of the bottom base. Using this structure, a mounting position of the bottom base is defined.
Preferably, a front end and a back end of the outer support base are provided with an outwardly bent support plate, two guide rods being fixedly mounted between two groups of the support plates. A front end and a back end of the sliding component are provided with an inwardly extending assembly plate. A sliding hole that slidably fits over the guide rod is provided on the assembly plate. Using this structure, a path of motion of the sliding component is defined.
Preferably, the driving assembly comprises an electric motor and a lead screw that is in motive power connection with an output shaft of the electric motor. The electric motor is fixedly fitted to an outer side of one of the support plates, and two ends of the lead screw are rotatably supported on the two support plates. Using this structure ensures a motive power source of the sliding component.
Preferably, the electric motor is a reduction motor, and an upper end of the lead screw is in motive power connection with an output end of the electric motor. Using this structure causes the structure of the motive power source to be simple.
Preferably, a bushing is fitted in the sliding hole. Using this structure makes the sliding component slide more smoothly on the guide rod.
Preferably, the sliding component is a linear sliding block. Using this structure, the type and manner of motion of the sliding component are defined.
Preferably, the driving assembly comprises an electric motor and a synchronous belt, a synchronous wheel being fitted over an output end of the electric motor, a directional wheel is provided on the support base. The synchronous belt is fitted over the synchronous wheel and the directional wheel, and the sliding component is fixedly mounted on the synchronous belt. Using this structure, the operation of the electric motors drives the synchronous belts to rotate, and the rotation of the synchronous belts drives front-back motion of the sliding components, thereby realizing front-back adjustment of the safety belt lower anchorage.
Preferably, the bottom base is provided with an angle adjuster electric motor for adjusting a tilt angle thereof, and the angle adjuster electric motor and the electric motor are synchronously controlled by means of a controller. Using this structure realizes synchronous adjustment of a seat angle and a safety belt lower anchorage (a buckle component and a lower anchor).
Preferably, the electric motor is a strip-shaped construction and is longitudinally mounted to an outer side of the support plate, a width of the electric motor not exceeding an outwardly bent length of the support plate. Using this structure does not increase the overall volume of the seat, such that the overall design is highly compact.
Compared with the prior art, beneficial effects of the present device and method are:
Using the safety belt lower anchorage front-back adjustment structure, front-back adjustment of a safety belt lower anchorage (a buckle component and a lower anchor) can be realized by means of the motion of sliding components driven by driving assemblies, ensuring that, for occupants of different body types and different seat angles, the safety belt always has an effective restraining effect on the occupant, and ensuring that the occupant has a comfortable safety belt wearing experience.
The device and method are further explained below in conjunction with the embodiments and accompanying drawings.
Further in conjunction with
Furthermore, in the present embodiment, the driving assembly 5 is composed of an electric motor 5a and a lead screw 5b that is in motive power connection with an output shaft of the electric motor 5a, the electric motor 5a being a strip-shaped reduction motor, the electric motor 5a being longitudinally fixedly mounted to an outer side of one of the support plates 1b1 of the outer support base 1b by means of a bolt. A width of the electric motor 5a does not exceed an outwardly bent length of the support plate 1b1. A front end and a back end of the lead screw 5b are rotatably supported between front and back support plates 1b1. One end of the lead screw 5b is in motive power connection with the output shaft of the electric motor 5a. The sliding component 2 is mounted to the lead screw 5b in a threaded manner. By means of programming, the left and right electric motors 5a and a seat angle adjuster electric motor perform synchronous adjustment using the same controller. With such a design, the operation of the electric motors 5a causes the lead screws 5b to rotate, and with the lead screws 5b fitted to the sliding components 2 in a threaded manner, the rotation of the lead screws 5b enables the sliding components 2 to move forward and backward, thereby achieving front-back adjustability of the safety belt lower anchorage (a buckle 3 and a lower anchor 4), and, while the seat angle adjuster electric motor operates, the electric motors 5a also operate, realizing synchronous adjustment of a seat angle with the safety belt buckle, and the longitudinal mounting of the electric motors 5a also does not increase the overall volume of the seat.
As shown in
Finally, it must be explained that the above merely describes preferred embodiments; a person skilled in the art, having been enlightened by the foregoing may make various similar representations without going against the purpose of the present disclosure and the claims, all such changes falling within the scope of protection the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202322922789.3 | Oct 2023 | CN | national |
