Car seats with adjustable seat belts

Abstract

This utility model discloses a car seat with an adjustable seat belt device, which is fixedly connected to the seat back body. The adjustable seat belt device includes a seat belt body, a fixing device, and a guide device. The seat belt body is disposed between the fixing device and the guide device. One end of the fixing device passes through the seat back body, and the other end is detachably connected to the seat belt body. The side of the fixing device closest to the seat back body is fixedly connected to the seat back body. The side of the seat belt body closest to the seat back body is fixedly connected to the seat back body. The seat belt body includes a retractor and a webbing. The angle between the retractor's setting direction and the seat back body's setting direction is 85° to 95°. The guide device is located on the side of the seat back body. One end of the webbing is fixedly connected to the retractor, and the other end is slidably connected to the guide device. This utility model provides lateral vehicle feel and improves the protection effect for drivers and passengers.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seat belt technology, and in particular to a car seat with an adjustable seat belt device. Background Technology

[0002] With the increasing demands for passive safety in automobiles, the limitations of existing seat belt lateral installation structures have become apparent. Existing solutions, due to the lack of an effective dynamic response mechanism and unreasonable lateral fixing point settings during vehicle collisions, result in uneven distribution of seat belt restraint force and insufficient dispersion of impact force, significantly increasing the risk of localized injuries to occupants. At the same time, their components have poor versatility, making it difficult to adapt to different vehicle models and seat layouts, leading to low installation efficiency.

[0003] Furthermore, the loose structural design results in excessive space occupation, affecting the cabin layout and easily causing interference. At its root, this stems from an overemphasis on height adjustment while neglecting lateral force optimization, a lack of component standardization, and insufficient space-compact design; these systemic defects urgently need to be addressed. Utility Model Content

[0004] To address the technical problems in the background art, this utility model provides a car seat with an adjustable seat belt device. The car seat includes a seat back body and an adjustable seat belt device. The adjustable seat belt device is disposed near the top of the seat back body. The adjustable seat belt device is fixedly connected to the seat back body. The adjustable seat belt device includes a seat belt body, a fixing device, and a guide device. The seat belt body is disposed between the fixing device and the guide device.

[0005] One end of the fixing device passes through the seat back body, and the other end is detachably connected to the seat belt body; the side of the fixing device near the seat back body is fixedly connected to the seat back body; the side of the seat belt body near the seat back body is fixedly connected to the seat back body.

[0006] The seat belt body includes a retractor and a webbing; the angle between the retractor's setting direction and the seat back body's setting direction is 85° to 95°; the guide device is located near the side of the seat back body; the side of the guide device near the side of the seat back body is fixedly connected to the side of the seat back body; one end of the webbing is fixedly connected to the retractor, and the other end is slidably connected to the guide device.

[0007] Furthermore, the car seat also includes a zipper; the zipper is located on the side of the seat back body away from the guide device; the side of the zipper closest to the seat back body is detachably connected to the seat back body.

[0008] Furthermore, the retractor includes a housing and a first connector; the housing is fixedly connected to the first connector; the housing is disposed between the first connector and the guide device; the housing includes a reel and a vehicle locking mechanism; the reel and the vehicle locking mechanism are fixedly connected.

[0009] Furthermore, the fixing device includes a second connector and a third connector; the second connector is fixedly connected to the third connector; the second connector is disposed between the box body and the third connector.

[0010] Furthermore, the adjustable seat belt device also includes a first screw; the first connector has a first threaded hole; the second connector has a second threaded hole; the first threaded hole and the second threaded hole are connected by the first screw.

[0011] Furthermore, the car seat also includes a second screw; the third connector is provided with a third threaded hole; the zipper is provided with a fourth threaded hole on the side near the third connector; the third threaded hole and the fourth threaded hole are connected by the second screw.

[0012] Furthermore, the guiding device is provided with a guide hole along its length; the shape of the guide hole matches the shape of the webbing; the webbing is slidably connected to the guiding device through the guide hole.

[0013] Furthermore, the guide hole is an arc-shaped hole; the guide hole curves toward the functional surface of the seat back body.

[0014] Furthermore, the car seat also includes a protective component; the adjustable seat belt device is disposed between the protective component and the seat back body; the protective component and the seat back body are detachably connected.

[0015] Furthermore, the protective component includes a first protective member and a second protective member; the first protective member has a hollow portion; the shape of the hollow portion matches the shape of the second protective member; the second protective member is detachably connected to the first protective member through the hollow portion.

[0016] The beneficial effects of this utility model are:

[0017] This utility model discloses a car seat with an adjustable seat belt device. The car seat includes a seat back body and an adjustable seat belt device. The adjustable seat belt device is disposed near the top of the seat back body. The adjustable seat belt device is fixedly connected to the seat back body. The adjustable seat belt device includes a seat belt body, a fixing device, and a guide device. The seat belt body is disposed between the fixing device and the guide device. One end of the fixing device passes through the seat back body, and the other end is detachably connected to the seat belt body. The fixing device is located near the seat back. One side of the seat belt body is fixedly connected to the seat back body; the side of the seat belt body near the seat back body is fixedly connected to the seat back body; the seat belt body includes a retractor and a webbing; the angle between the retractor's setting direction and the seat back body's setting direction is 85° to 95°; the guide device is located near the side of the seat back body; the side of the guide device near the side of the seat back body is fixedly connected to the side of the seat back body; one end of the webbing is fixedly connected to the retractor, and the other end is slidably connected to the guide device. An adjustable seat belt device is provided at the top of the seat back body, saving space and improving space utilization; the seat belt body with an angle of 85° to 95° with the seat back body's setting direction provides a lateral installation feel, helping the lateral seat belt feel change with the backrest adjustment when the backrest is adjusted forward or backward. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the connection between the adjustable seat belt device and the back of the seat back body provided by this utility model;

[0020] Figure 2 This is a side view of the connection between a guide device and a seat back body provided by this utility model;

[0021] Figure 3 The diagram in the middle is a schematic diagram of an adjustable seat belt device provided by this utility model;

[0022] Figure 4 The diagram below is a schematic diagram of the connection between the seat back body and the first protective component provided by this utility model;

[0023] Figure 5This is a schematic diagram of the connection between the seat back body and the protective components provided by this utility model;

[0024] Figure 6 This is a side view of the connection between a car seat and a guide device provided by this utility model;

[0025] Figure 7 This is a side view of a car seat connected to a zipper, as provided by this utility model;

[0026] Figure 8 This is a front view of a car seat provided by this utility model;

[0027] Figure 9 This is a schematic diagram of the front connection between an adjustable seat belt device and a seat back body provided by this utility model;

[0028] In the figure, the corresponding reference numerals are: 1-seat backrest body, 2-adjustable seat belt device, 3-seat belt body, 4-fixing device, 5-guide device, 6-retractor, 7-webbing, 8-zipper, 9-box body, 10-first connector, 11-second connector, 12-third connector, 13-first screw, 14-second screw, 15-guide hole, 16-protective component, 17-first protective component, 18-second protective component. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] like Figure 1-9 As shown, this utility model provides a car seat with an adjustable seat belt device 2. The car seat includes a seat back body 1 and an adjustable seat belt device 2. The adjustable seat belt device 2 is disposed near the top of the seat back body 1. The adjustable seat belt device 2 is fixedly connected to the seat back body 1. The adjustable seat belt device 2 includes a seat belt body 3, a fixing device 4, and a guide device 5. The seat belt body 3 is disposed between the fixing device 4 and the guide device 5.

[0032] One end of the aforementioned fixing device 4 passes through the aforementioned seat back body 1, and the other end is detachably connected to the aforementioned seat belt body 3; the side of the aforementioned fixing device 4 near the aforementioned seat back body 1 is fixedly connected to the aforementioned seat back body 1; the side of the aforementioned seat belt body 3 near the aforementioned seat back body 1 is fixedly connected to the aforementioned seat back body 1.

[0033] The aforementioned seat belt body 3 includes a retractor 6 and a webbing 7; the angle between the setting direction of the retractor 6 and the setting direction of the seat back body 1 is 85° to 95°; the aforementioned guide device 5 is disposed near the side of the aforementioned seat back body 1; the side of the aforementioned guide device 5 near the side of the aforementioned seat back body 1 is fixedly connected to the side of the aforementioned seat back body 1; one end of the aforementioned webbing 7 is fixedly connected to the aforementioned retractor 6, and the other end is slidably connected to the aforementioned guide device 5.

[0034] In some embodiments, the car seat includes a seat back body 1 and an adjustable seat belt device 2. The seat back body 1 can be the frame of the seat back, and the adjustable seat belt device 2 is disposed near the top of the seat back body 1, and the adjustable seat belt device 2 and the seat back body 1 are fixedly connected; wherein, the adjustable seat belt can be disposed either at the top front of the seat back body 1 or at the top back of the seat back body 1, such as... Figure 1 As shown, the adjustable seat belt device 2 is located at the top of the back of the seat back body 1, as... Figure 9 As shown, the adjustable seat belt device 2 is located at the top front of the seat back body 1; the adjustable seat belt device 2 includes a seat belt body 3, a fixing device 4, and a guide device 5. The seat belt body 3 is positioned between the fixing device 4 and the guide device 5; one end of the fixing device 4 passes through the seat back body 1, and the other end is detachably connected to the seat belt body 3, such as... Figure 9 As shown, one end of the fixing device 4 passes through the seat back body 1 and is detachably connected to the zipper 8, while the other end is detachably connected to the seat belt body 3. The side of the fixing device 4 closest to the seat back body 1 is fixedly connected to the seat back body 1, i.e., the fixing device 4 is welded to the seat back body 1, and the side of the seat belt body 3 closest to the seat back body 1 is fixedly connected to the seat back body 1. The seat belt body 3 includes a retractor 6 and a webbing 7. The angle between the setting direction of the retractor 6 and the setting direction of the seat back body 1 is 85° to 95°, preferably 90°. Figure 1 As shown, the retractor 6 is located at the top of the back of the seat back body 1, and the angle between the orientation of the retractor 6 and the orientation of the top of the seat back body 1 is 85° to 95°. Figure 9 As shown, the retractor 6 is located on the top front of the seat back body 1, and the angle between the retractor 6 and the top of the seat back body 1 is 85° to 95°; the guide device 5 is located near the side of the seat back body 1, and the side of the guide device 5 near the side of the seat back body 1 is fixedly connected to the side of the seat back body 1; one end of the webbing 7 is fixedly connected to the retractor 6, and the other end passes through the guide hole 15 on the guide device 5, thereby realizing the sliding connection between the webbing 7 and the guide device 5.

[0035] In this utility model, the car seat also includes a zipper 8; the zipper 8 is disposed on the side of the seat back body 1 away from the guide device 5; the side of the zipper 8 close to the seat back body 1 is detachably connected to the seat back body 1.

[0036] In some embodiments, such as Figure 9As shown, the car seat also includes a zipper 8, which is located on the side of the seat back body 1 away from the guide device 5, i.e., the zipper 8 and the guide device 5 are located at both ends of the seat back body 1; the side of the zipper 8 closest to the seat back body 1 is detachably connected to the seat back body 1, such as... Figure 7 As shown, Figure 7 This is a side view showing the zipper 8 connected to the car seat after installation. The zipper helps to create a gradual load distribution, reducing instantaneous peak pressure on the occupant's chest / abdomen and significantly lowering the risk of internal organ damage.

[0037] In this utility model, the retractor 6 includes a housing 9 and a first connector 10; the housing 9 is fixedly connected to the first connector 10; the housing 9 is disposed between the first connector 10 and the guide device 5; the housing 9 includes a reel and a vehicle locking mechanism; the reel and the vehicle locking mechanism are fixedly connected.

[0038] In some embodiments, such as Figure 1 , Figure 3 As shown, the retractor 6 includes a housing 9 and a first connector 10, which are fixedly connected. The housing 9 is positioned between the first connector 10 and the guide device 5, thereby enabling the seatbelt body 3 to be connected to both the guide device 5 and the fixing device 4. The housing 9 includes a reel and a vehicle locking mechanism. Webbing 7 is wound around the reel and fixedly connected to it. The vehicle locking mechanism includes a vehicle sensor and a pawl-ratchet. The vehicle sensor is close to the side or bottom of the reel, and the ratchet is directly fixed to the end face of the reel, resembling a gear-shaped disc. The pawl is suspended from a metal lever beside the ratchet. By incorporating a retractor with a vehicle locking mechanism, it helps prevent the seatbelt from loosening due to the occupant's forward momentum during a collision, ensuring that the seatbelt tightens instantly and firmly restrains the occupant in the seat.

[0039] In this utility model, the fixing device 4 includes a second connector 11 and a third connector 12; the second connector 11 and the third connector 12 are fixedly connected; the second connector 11 is disposed between the box body 9 and the third connector 12.

[0040] In some embodiments, such as Figure 1 , Figure 9 As shown, the fixing device 4 includes a second connector 11 and a third connector 12, and the second connector 11 and the third connector 12 are fixedly connected. The second connector 11 is disposed between the housing 9 and the third connector 12 to enable the fixing device 4 to be connected to the zipper 8 and the seat belt body 3 respectively. By providing a fixing device with a second connector and a third connector, it can be connected to the seat belt body and the zipper respectively, which significantly optimizes the force transmission path and improves the reliability of the car seat, thus ensuring passenger safety.

[0041] In this utility model, the adjustable seat belt device 2 further includes a first screw 13; the first connecting member 10 is provided with a first threaded hole; the second connecting member 11 is provided with a second threaded hole; the first threaded hole and the second threaded hole are connected by the first screw 13.

[0042] In some embodiments, such as Figure 1 As shown, the adjustable seat belt device 2 also includes a first screw 13, and the first connecting member 10 is provided with a hole for the first screw 13. The second connecting member 11 is provided with a second threaded hole. The shapes of the first threaded hole and the second threaded hole are matched, that is, the dimensions of the first threaded hole and the second threaded hole are the same, and the central axes of the first threaded hole and the second threaded hole are located on the same straight line. The dimensions of the first screw 13 are matched with the dimensions of both the first threaded hole and the second threaded hole. Therefore, the first threaded hole and the second threaded hole are connected by the first screw 13. By setting the first screw, the first connecting member on the seat belt body and the second connecting member on the fixing device are connected as one unit, which improves the stability and reliability of the adjustable seat belt device.

[0043] The aforementioned car seat also includes a second screw 14; the aforementioned third connector 12 is provided with a third threaded hole; the aforementioned zipper 8 is provided with a fourth threaded hole on the side near the aforementioned third connector 12; the aforementioned third threaded hole and the aforementioned fourth threaded hole are connected by the aforementioned second screw 14.

[0044] In some embodiments, such as Figure 9 As shown, the car seat also includes a second screw 14, a third threaded hole on the third connector 12, and a fourth threaded hole on the side of the zipper 8 near the third connector 12. The shapes of the third and fourth threaded holes match, meaning they are the same size, and their central axes are on the same straight line. Furthermore, the size of the second screw 14 matches both the size of the third and fourth threaded holes. Therefore, the third and fourth threaded holes are connected by the second screw 14. By using the second screw, the fixing device and the zipper are integrated, improving the structural stability and reliability of the car seat and optimizing the component layout.

[0045] In this utility model, the guide device 5 is provided with a guide hole 15 in the length direction; the shape of the guide hole 15 matches the shape of the webbing 7; the webbing 7 is slidably connected to the guide device 5 through the guide hole 15.

[0046] In some embodiments, such as Figure 2 , Figure 6 As shown, Figure 2This is a schematic diagram showing the guide device 5 fixedly connected to the seat back body 1. The protective component 16 is not installed at this time. Figure 6 This is a schematic diagram showing the guide device 5 fixedly connected to the seat back body 1 and the protective component 16 installed. Regardless of... Figure 2 still Figure 6 Guide holes 15 are provided along the length of the guide device 5, and the shape of the guide holes 15 matches the shape of the webbing 7, that is, the width of the guide holes 15 is greater than the thickness of the webbing 7, so that the webbing 7 can slide and connect with the guide device 5 through the guide holes 15, and the webbing 7 is in the following state when the user is not using the seat belt. Figure 2 and Figure 6 As shown, the webbing hangs vertically after passing through the guide hole 15. By providing a guide hole on the guide device, the webbing can pass through the guide hole, allowing the webbing to slide and connect with the guide device, thus enabling flexible adjustment of the webbing's angle.

[0047] In this utility model, the guide hole 15 is an arc-shaped hole; the guide hole 15 is bent toward the functional surface of the seat back body 1.

[0048] In some embodiments, such as Figure 2 , Figure 6 As shown, the guide hole 15 is an arc-shaped hole, and the guide hole 15 bends towards the functional surface of the seat back body 1. By setting the arc-shaped hole that bends towards the functional surface of the seat back body, the webbing can better conform to the curve of the human shoulder and chest after passing through the guide hole. In this way, during vehicle operation, especially in emergency situations, the webbing can more evenly distribute the impact force, reduce the pressure on the local body, and improve the protection of the driver and passengers. At the same time, it can guide the webbing to pass through a smoother path, reduce the chance of friction between the webbing and other components, extend the service life of the webbing, and also reduce the possibility of abnormal noise caused by friction.

[0049] In this invention, the car seat further includes a protective component 16; the adjustable seat belt device 2 is disposed between the protective component 16 and the seat back body 1; the protective component 16 and the seat back body 1 are detachably connected.

[0050] In some embodiments, such as Figure 4-5 As shown, the car seat also includes a protective component 16, and an adjustable seatbelt device 2 is disposed between the protective component 16 and the seat back body 1. The protective component 16 can be a sponge, with sponge filling the outside of the seat back body 1 to allow user access. The protective component 16 and the seat back body 1 are detachably connected. Figure 8 As shown, Figure 8This is a frontal view of the car seat after the protective component 16 has been installed. The foam has elastic cushioning properties; the protective component absorbs the impact force transmitted from the seat back when a collision or sudden braking occurs, reducing the risk of the occupant's back directly impacting the hard frame and lowering the probability of injury. Furthermore, the foam can be molded to fit the curvature of the seat back, closely conforming to the curve of the human back, evenly distributing pressure from prolonged sitting and reducing fatigue in the lumbar spine, shoulders, and other areas.

[0051] The protective component 16 includes a first protective member 17 and a second protective member 18; the first protective member 17 is provided with a hollow portion; the shape of the hollow portion matches the shape of the second protective member 18; the second protective member 18 is detachably connected to the first protective member 17 through the hollow portion.

[0052] In some embodiments, such as Figure 4-5 As shown, the protective assembly 16 includes a first protective member 17 and a second protective member 18. The first protective member 17 has a hollow portion, the shape of which matches the shape of the second protective member 18. The second protective member is detachably connected to the first protective member 17 through the hollow portion, and the shape of the hollow portion can also match the shape of the seat belt body 3, which helps maintenance personnel to observe the condition of the seat belt body 3 in a timely manner and facilitates maintenance. By setting up the first and second protective members, it is helpful to carry out partial maintenance when problems occur in the car seat, thereby improving the safety performance of the car seat.

[0053] The working principle of the car seat with adjustable seat belt device 2 of this utility model is as follows:

[0054] When the user needs to use the seat belt, the webbing 7 hanging down from the guide hole 15 is pulled out. That is, the webbing 7 is slowly pulled out from the box 9 of the seat belt body 3, passes through the guide device 5, and finally connects to the buckle on the car seat. When the user is impacted, the vehicle locking mechanism in the seat belt body 3 is triggered to lock the webbing 7 reel, preventing the webbing 7 from being pulled out further, thereby restraining the occupant to the seat.

[0055] The beneficial effects of this utility model are:

[0056] This utility model discloses a car seat with an adjustable seat belt device. The car seat includes a seat back body and an adjustable seat belt device. The adjustable seat belt device is disposed near the top of the seat back body. The adjustable seat belt device is fixedly connected to the seat back body. The adjustable seat belt device includes a seat belt body, a fixing device, and a guide device. The seat belt body is disposed between the fixing device and the guide device. One end of the fixing device passes through the seat back body, and the other end is detachably connected to the seat belt body. The fixing device is located near the seat back. One side of the seat belt body is fixedly connected to the seat back body; the side of the seat belt body near the seat back body is fixedly connected to the seat back body; the seat belt body includes a retractor and a webbing; the angle between the setting direction of the retractor and the setting direction of the seat back body is 85° to 95°; the guide device is disposed near the side of the seat back body; the side of the guide device near the side of the seat back body is fixedly connected to the side of the seat back body; one end of the webbing is fixedly connected to the retractor, and the other end is slidably connected to the guide device. By placing the adjustable seatbelt device at the top of the seat back, the layout of the car seat is simplified, and the fastening device, seatbelt body, and guide device are integrated into one unit, achieving a compact design, optimizing component layout, reducing space occupation, improving the space utilization rate inside the car seat, and avoiding spatial interference with other components. By setting a retractor with an angle of 85° to 95° with the seat back, a lateral installation feel for the seatbelt body has been developed, which can adapt to different body shapes and seating positions of drivers and passengers, and fine-tune the use angle of the seatbelt to ensure that the seatbelt can evenly distribute the impact force when subjected to force, ensuring flexible adjustment of the seatbelt installation position and angle, and improving the installation adaptability and use safety of the seatbelt.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A car seat with an adjustable seatbelt device, characterized in that, The car seat includes a seat back body (1) and an adjustable seat belt device (2); the adjustable seat belt device (2) is disposed near the top of the seat back body (1); the adjustable seat belt device (2) is fixedly connected to the seat back body (1); the adjustable seat belt device (2) includes a seat belt body (3), a fixing device (4) and a guide device (5); the seat belt body (3) is disposed between the fixing device (4) and the guide device (5); One end of the fixing device (4) passes through the seat back body (1), and the other end is detachably connected to the seat belt body (3); the side of the fixing device (4) near the seat back body (1) is fixedly connected to the seat back body (1); the side of the seat belt body (3) near the seat back body (1) is fixedly connected to the seat back body (1). The seat belt body (3) includes a retractor (6) and a webbing (7); the angle between the setting direction of the retractor (6) and the setting direction of the seat back body (1) is 85° to 95°; the guide device (5) is set near the side of the seat back body (1); the side of the guide device (5) near the side of the seat back body (1) is fixedly connected to the side of the seat back body (1); one end of the webbing (7) is fixedly connected to the retractor (6), and the other end is slidably connected to the guide device (5).

2. The car seat according to claim 1, characterized in that, The car seat also includes a zipper (8); the zipper (8) is located on the side of the seat back body (1) away from the guide device (5); the side of the zipper (8) near the seat back body (1) is detachably connected to the seat back body (1).

3. The car seat according to claim 2, characterized in that, The retractor (6) includes a housing (9) and a first connector (10); the housing (9) is fixedly connected to the first connector (10); the housing (9) is disposed between the first connector (10) and the guide device (5); the housing (9) includes a reel and a vehicle locking mechanism; the reel and the vehicle locking mechanism are fixedly connected.

4. The car seat according to claim 3, characterized in that, The fixing device (4) includes a second connector (11) and a third connector (12); the second connector (11) is fixedly connected to the third connector (12); the second connector (11) is disposed between the box body (9) and the third connector (12).

5. The car seat according to claim 4, characterized in that, The adjustable seat belt device (2) further includes a first screw (13); the first connector (10) is provided with a first threaded hole; the second connector (11) is provided with a second threaded hole; the first threaded hole and the second threaded hole are connected by the first screw (13).

6. The car seat according to claim 5, characterized in that, The car seat also includes a second screw (14); the third connector (12) is provided with a third threaded hole; the zipper (8) is provided with a fourth threaded hole on the side near the third connector (12); the third threaded hole and the fourth threaded hole are connected by the second screw (14).

7. The car seat according to claim 1, characterized in that, The guide device (5) has a guide hole (15) along its length; the shape of the guide hole (15) matches the shape of the webbing (7); the webbing (7) is slidably connected to the guide device (5) through the guide hole (15).

8. The automobile seat according to claim 7, characterized in that, The guide hole (15) is an arc-shaped hole; the guide hole (15) bends toward the functional surface of the seat back body (1).

9. The car seat according to claim 1, characterized in that, The car seat also includes a protective component (16); the adjustable seat belt device (2) is disposed between the protective component (16) and the seat back body (1); the protective component (16) and the seat back body (1) are detachably connected.

10. The automobile seat according to claim 9, characterized in that, The protective component (16) includes a first protective member (17) and a second protective member (18); the first protective member (17) is provided with a hollow part; the shape of the hollow part matches the shape of the second protective member (18); the second protective member (18) is detachably connected to the first protective member (17) through the hollow part.

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