Seat belt lower support point front and rear adjustment structure

Abstract

The utility model discloses a front-to-back adjustment structure for the lower support point of a safety belt, comprising a base and a seat frame mounted on the base, wherein the base is respectively mounted with a base at positions on the left and right sides of the corresponding seat frame, and each of the bases is provided with a sliding component, and the two sliding components can slide back and forth on the corresponding bases, and a driving assembly is provided between the sliding component and the corresponding base for driving the sliding component to slide back and forth; in the two sliding components, a lock buckle is fixedly mounted on one of the sliding components, and a lower anchor is fixedly mounted on the other sliding component. The beneficial effects of the utility model are: the front-to-back adjustment of the lower support point of the safety belt is achieved by moving the sliding component, ensuring that the safety belt always restrains the occupants due to different body shapes and different seat sitting modes, and ensuring that the occupants have a comfortable safety belt wearing experience.

Description

Technical Field

[0001] The utility model relates to a three-point safety belt for an automobile seat, in particular to a front-rear adjustment structure for a lower support point of the safety belt. Background Art

[0002] As one of the indispensable safety components of a car, seat belts have always played a key role. The commonly used seat belt structure in a car is a three-point seat belt, which consists of a seat belt retractor, a seat belt outlet guide outlet component, a locking component, a lower anchor, a seat belt rope and a locking tongue. The seat belt retractor and the seat belt guide outlet component are fixedly installed on the B-pillar of the car or on the shoulder position of the seat back, and the locking component and the lower anchor are fixedly installed on both sides of the car seat.

[0003] As the automobile market expands, market competition becomes increasingly fierce, and customers have higher and higher requirements for the quality, refinement and comfort of automobile products. Car seats are one of the most frequently touched and used parts of a vehicle, and as the first product perceived by customers, with the changes in automobile market demand, zero-gravity seats came into being. The zero-gravity mode of the zero-gravity seat is as follows: the front end of the seat frame is lifted upward, the backrest tilts backward, and the leg rest is slightly inclined.

[0004] Zero-gravity seats enable passengers to sit in a variety of postures, such as regular, multi-angle and zero-gravity. However, the lower support points (locking parts and lower anchors) of traditional three-point seat belts are fixedly installed. As the angle of the seat is adjusted, the angle between the passenger's thigh and upper body will also change, causing the seat belt to be in an unsafe and uncomfortable wearing state. In addition, differences in body shape between different passengers will also cause fixed seat belts to be in an unsafe and uncomfortable wearing state. Utility Model Content

[0005] In view of this, the utility model provides a front-rear adjustment structure for the lower support point of the seat belt, aiming at enabling the seat belt to provide the occupants with a more comfortable wearing experience in different sitting posture modes, and to play a good role in restraining the occupants, thereby improving riding safety.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A safety belt lower support point forward and backward adjustment structure, comprising a base and a seat frame mounted on the base, wherein the base is respectively mounted with a base at positions on the left and right sides of the corresponding seat frame, each of the bases is provided with a sliding component, and the two sliding components can slide forward and backward on the corresponding base, and a driving assembly is provided between the sliding component and the corresponding base for driving the sliding component to slide forward and backward;

[0008] Among the two sliding components, a lock buckle is fixedly installed on one of the sliding components, and a lower anchor is fixedly installed on the other sliding component.

[0009] By adopting the above structure, the driving component drives the sliding component to move forward and backward to realize the front and rear adjustment of the support point under the seat belt. Such a structure has the advantages of simple structure and high reliability. By adjusting the position of the support point under the seat belt, it is ensured that even if there are differences in the body shapes of the occupants or the seat modes are different, the seat belt can still restrain the occupants well, and the occupants will also have a good wearing experience.

[0010] Preferably, the base comprises an inner base and an outer base fixedly mounted on the outer side of the inner base by screws, and the inner base is fixedly mounted on the side of the base. With the above structure, the installation position of the base is limited.

[0011] Preferably, the front and rear ends of the outer base have outwardly bent support plates, two guide rods are fixedly installed between the two groups of support plates, and the front and rear ends of the sliding component have inwardly extending sleeve plates, and the sleeve plates are provided with sliding holes that are slidably sleeved with the guide rods. The above structure limits the movement trajectory of the sliding component.

[0012] Preferably, the driving assembly includes a motor and a screw connected to the motor output shaft, the motor is fixedly mounted on the outside of one of the support plates, and both ends of the screw are rotatably supported on the two support plates. The above structure ensures the power source of the sliding component.

[0013] Preferably, the motor is a reduction motor, and the upper end of the screw rod is connected to the output end of the motor. The above structure makes the structure of the power source simple.

[0014] Preferably, a shaft sleeve is sleeved in the sliding hole, and the above structure is adopted to make the sliding component slide more smoothly on the guide rod.

[0015] Preferably, the sliding component is a linear slider, and the above structure is adopted to limit the style and movement mode of the sliding component.

[0016] Preferably, the driving assembly includes a motor and a synchronous belt, the output end of the motor is sleeved with a synchronous wheel, the base is provided with a directional wheel, the synchronous belt is sleeved on the synchronous wheel and the directional wheel, and the sliding component is fixedly mounted on the belt. With the above structure, the operation of the motor drives the synchronous belt to rotate, and the rotation of the synchronous belt drives the sliding component to move forward and backward, thereby realizing the forward and backward adjustment of the support point under the safety belt.

[0017] Preferably, the base has a recliner motor for adjusting its inclination, and the recliner motor and the motor are synchronously controlled by a controller. With the above structure, the synchronous adjustment of the seat angle and the lower support point of the safety belt (the locking component and the lower anchor) is achieved.

[0018] Preferably, the motor is of a long strip structure and is longitudinally mounted on the outside of the support plate, and the width of the motor does not exceed the length of the support plate bent outward. The above structure does not increase the overall volume of the seat, which makes the entire design very compact.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] By adopting the front and rear adjustment structure of the lower support point of the seat belt provided by the utility model, the front and rear adjustment of the lower support point of the seat belt (the locking component and the lower anchor component) can be achieved by driving the sliding component to move through the driving component, thereby ensuring that the seat belt can effectively restrain the occupants when the occupants have different body shapes and different seat angles, and ensuring that the occupants have a comfortable seat belt wearing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the seat of the utility model (only the seat frame is shown);

[0022] Figure 2 It is a right side view of the seat of the utility model (the seat back is hidden);

[0023] Figure 3 It is a partial schematic diagram of the lower support point of the safety belt of the utility model (the position of the lower anchor member);

[0024] Figure 4 It is a structural schematic diagram of the upper and lower support points of the seat in zero gravity mode (locking component side);

[0025] Figure 5 This is a top view of the seat (normal sitting mode);

[0026] Figure 6 This is the left view of the seat (normal sitting mode);

[0027] Figure 7 This is the left view of the seat (zero gravity sitting mode);

[0028] Figure 8 FIG. 5 is a schematic diagram of another embodiment of the drive assembly 5 . DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with embodiments and drawings.

[0030] like Figure 1As shown, a front-to-back adjustment structure of the lower support point of the seat belt comprises a base A, a seat frame B and two bases 1. The rear end of the base A and the rear end of the seat frame B are rotatably installed. In this embodiment, the two bases 1 are symmetrically installed on the left and right sides of the base A. The front-to-back adjustment structure of the lower support point of the seat belt also comprises two sliding components 2. The two sliding components 2 are slidably installed on the left and right bases 1 along the front-to-back direction of the base A in a one-to-one correspondence. A lock buckle 3 and a lower anchor 4 are respectively fixed on the outer sides of the left and right sliding components 2. The lock buckle 3 is used to lock the seat belt. The lower anchor 4 is used to cooperate with the lock buckle 3 to restrain the waist of the occupant. A driving assembly 5 is installed between the base 1 and the sliding component 2. The driving assembly 5 is used to drive the sliding component 2 to move forward and backward. With such a design, the forward and backward movement of the sliding component 2 realizes the forward and backward adjustability of the support point under the seat belt. Such a structure has the advantages of simple structure and high reliability, and can adapt to people of different body shapes to ensure the comfort of wearing the seat belt. When the seat is adjusted at multiple angles, the forward and backward adjustment of the support point under the seat belt can also ensure that the seat belt always restrains the occupant.

[0031] Recombination Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the base 1 includes an inner base 1a and an outer base 1b. The inner base 1a is fixedly installed on the left and right sides of the base A by bolts. The installation positions of the two inner bases 1a on the left and right sides are symmetrical along the front and rear direction of the base A. The outer base 1b is fixedly installed on the outside of the inner base 1a by bolts. The front and rear ends of the outer base 1b have support plates 1b1 bent outward, which makes the outer base 1b present a "U"-shaped structure as a whole. Two guide rods 1c are fixedly installed between the front and rear support plates 1b1. The front and rear ends of the sliding component 2 have a set plate 2a extending toward the base A. The set plate 2a is provided with a sliding hole 2b. The sliding hole 2b is provided with a sleeve 2c. The sliding component 2 is slidably mounted on the guide rod 1c through the sleeve 2c. With such a design, the sliding component 2 can be stably mounted on the guide rod 1c, and the sleeve 2c is used to make the sliding component 2 slide more smoothly.

[0032] Furthermore, in this embodiment, the drive assembly 5 is composed of a motor 5a and a screw rod 5b connected to the output shaft of the motor 5a. The motor 5a is a long strip-shaped reduction motor. The motor 5a is longitudinally fixed on the outside of a support plate 1b1 of the outer base 1b by bolts. The width of the motor 5a does not exceed the length of the support plate 1b1 bent outward. The front and rear ends of the screw rod 5b are rotatably supported between the front and rear support plates 1b1. One end of the screw rod 5b is connected to the output shaft of the motor 5a. The sliding component 2 is threadedly installed on the screw rod 5b. Through programming, the left and right motors 5a and the seat recliner motor are synchronously adjusted using the same controller. With such a design, the operation of motor 5a causes screw rod 5b to rotate, and screw rod 5b and sliding component 2 are threadedly assembled. The rotation of screw rod 5b enables sliding component 2 to move forward and backward, thereby realizing the front and rear adjustability of the lower support point of the seat belt (buckle 3 and lower anchor 4), and while the seat angle adjuster motor is operating, motor 5a can also move at the same time, realizing the synchronous adjustment of the seat angle and the seat belt buckle, and the longitudinal installation of motor 5a will not increase the overall volume of the seat.

[0033] like Figure 5 As shown, the top view of the utility model installed on the seat is shown, the lock buckle 3 and the lower anchor 4 are symmetrically installed on the left and right sides of the base A, and the overall width of the drive assembly 5 does not exceed the width of the lock buckle 3 or the lower anchor 4 turned on the sliding component 2. With such a design, the symmetrical installation ensures that the safety belt is parallel to the waist position of the occupant, which can restrain the occupant to the greatest extent. The overall installation structure does not increase the occupied space of the seat, and the entire lower support point occupies a small space.

[0034] like Figure 6 and Figure 7 As shown, the positions of the lower support points of the seat in the normal mode and in the zero gravity mode are shown respectively. Since the lock buckle 3 and the lower anchor 4 are installed symmetrically, only the position of the lock buckle 3 in different modes is shown. In this embodiment, the motor 5a and the recliner motor of the seat are synchronously controlled by a controller, so as the angle of the seat frame B increases, the lower support point will also move forward. Such a design ensures that the lower support point of the safety belt can also be adaptively adjusted when the seat is switched in multiple modes.

[0035] like Figure 8As shown, in addition to the above screw motor drive mode, the drive assembly 5 can also be composed of a motor 5a and a synchronous belt 5c, the output end of the motor 5a is sleeved with a synchronous wheel 5d, a directional wheel 1d is fixedly installed on the base 1, the synchronous belt 5c is sleeved on the synchronous wheel 5d and the directional wheel 1d, and the sliding component 2 is fixedly installed above the synchronous belt. With such a design, the motor 5a drives the synchronous belt 4c to rotate through the rotation of the synchronous wheel 5d, and the rotation of the synchronous belt 4c drives the sliding component 2 to move forward and backward, thereby realizing the front and rear adjustment of the lower support point of the safety belt (the buckle 3 and the lower anchor 4).

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A front-to-rear adjustment structure for the lower support point of a safety belt, characterized in that: The invention comprises a base (A) and a seat frame (B) mounted on the base (A), wherein the base (A) is respectively mounted with a base (1) at positions on the left and right sides of the corresponding seat frame (B), and each of the bases (1) is provided with a sliding component (2), and the two sliding components (2) can slide forward and backward on the corresponding base (1), and a driving component (5) is provided between the sliding component (2) and the corresponding base (1) for driving the sliding component (2) to slide forward and backward; Of the two sliding components (2), a lock buckle (3) is fixedly mounted on one of the sliding components (2), and a lower anchor (4) is fixedly mounted on the other sliding component (2).

2. The front-rear adjustment structure for the lower support point of the safety belt according to claim 1, characterized in that: The base (1) comprises an inner base (1a) and an outer base (1b) fixedly mounted on the outside of the inner base (1a) by means of screws, wherein the inner base (1a) is fixedly mounted on the side of the base (A).

3. The front-rear adjustment structure for the lower support point of the safety belt according to claim 2, characterized in that: The front and rear ends of the outer base (1b) have outwardly bent support plates (1b1), two guide rods (1c) are fixedly mounted between the support plates (1b1), and the front and rear ends of the sliding component (2) have inwardly extending sleeve plates (2a), and the sleeve plates (2a) are provided with sliding holes (2b) that are slidably sleeved with the guide rods (1c).

4. The front-rear adjustment structure for the lower support point of the safety belt according to claim 3 is characterized in that: The driving assembly (5) comprises a motor (5a) and a screw rod (5b) connected to the output shaft of the motor (5a) in a power manner; the motor (5a) is fixedly mounted on the outside of one of the support plates (1b1); and both ends of the screw rod (5b) are rotatably supported on the two support plates (1b1).

5. The front-rear adjustment structure for the lower support point of the safety belt according to claim 4 is characterized in that: The motor (5a) is a reduction motor, and the upper end of the screw rod (5b) is dynamically connected to the output end of the motor (5a).

6. The front-to-back adjustment structure for the lower support point of the safety belt according to claim 3, characterized in that: The sliding hole (2b) is sleeved with a shaft sleeve (2c).

7. The front-to-back adjustment structure for the lower support point of the safety belt according to claim 3, characterized in that: The sliding component (2) is a linear sliding block.

8. The front-to-back adjustment structure for the lower support point of the safety belt according to claim 1, characterized in that: The driving assembly (5) comprises a motor (5a) and a synchronous belt (5c); the output end of the motor (5a) is sleeved with a synchronous wheel (5d); a directional wheel (1d) is provided on the base (1); the synchronous belt (5c) is sleeved on the synchronous wheel (5d) and the directional wheel (1d); and the sliding component (2) is fixedly mounted on one side of the synchronous belt (5c).

9. The front-to-back adjustment structure for the lower support point of the safety belt according to claim 4, characterized in that: The base (A) has a recliner motor for adjusting its inclination, and the recliner motor and the motor (5a) are synchronously controlled by a controller.

10. The safety belt lower support point front-to-back adjustment structure according to claim 4, characterized in that: The motor (5a) is of a long strip-shaped structure and is longitudinally mounted on the outside of the support plate (1b1); the width of the motor (5a) does not exceed the length of the support plate (1b1) bent outwards.

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