CN218594180U

CN218594180U - Safety belt adjusting device and child safety seat

Info

Publication number: CN218594180U
Application number: CN202222118396.2U
Authority: CN
Inventors: 戎森立; 侯玉根
Original assignee: Cixi Yi'an Children's Products Co ltd
Current assignee: Cixi Yi'an Children's Products Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-03-10
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a safety belt adjusting device and a child safety seat, wherein the safety belt adjusting device comprises a base, a locking block, an installation seat and a sliding block, the base comprises a first side wall part, a second side wall part and a connecting part, and the first side wall part and the second side wall part are arranged at intervals and are connected with the connecting part; the locking block is arranged between the first side wall part and the second side wall part, a gap between the locking block and the connecting part can be penetrated by a safety belt, and the locking block is provided with a first position and a second position; the mounting seat is provided with a slide way, and the slide way is provided with a second end close to the locking block and a first end far away from the locking block; the sliding block is arranged in the slide way and can slide from the first end to the second end and drive the locking block to move from the first position to the second position. The utility model provides a safety belt adjusting device and children's safety seat have simple to use, convenient advantage, but also can avoid children to be pressed from both sides wounded effectively, have better security.

Description

Safety belt adjusting device and child safety seat

Technical Field

The utility model relates to a car children's seat technical field, concretely relates to safety belt adjusting device and children's safety seat.

Background

A child safety seat of an automobile is also called a child restraint system, and is specially designed for children of different ages (or weights), is arranged in the automobile, and can effectively improve the riding safety of the children. The definition of the child safety seat by the national standard 27887-2011 and the european regulation ECER129 is: child safety system capable of being fixed to a motor vehicle, consisting of a safety belt assembly or flexible element with snap, an adjustment mechanism, accessories, etc. Can be combined with additional devices such as portable child beds, infant carriers, booster seats or crash shields. In the case of collision or sudden deceleration of the automobile, the impact force on the children is relieved, the body movement of the children is limited to reduce the injury to the children, and the riding safety of the children is ensured.

When some car children's seats among the prior art are used, need the user to touch the metalwork with the hand, user's operation experience is not good, and it is not very convenient to use. Moreover, children are easy to touch when playing on the seat, and potential safety hazards that fingers of the children are pinched exist. In addition, children can insert toys, food and other objects into the gaps of the metal parts, so that the metal parts are stuck, and the related functions of the seat cannot be used.

SUMMERY OF THE UTILITY MODEL

The utility model provides a safety belt adjusting device and child safety seat which are convenient to use and have good safety.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a safety belt adjusting device comprises a base, a locking block, a mounting seat and a sliding block.

The base comprises a first side wall part, a second side wall part and a connecting part, wherein the first side wall part and the second side wall part are arranged at intervals and are connected with the connecting part;

the lock block is arranged between the first side wall part and the second side wall part, a gap between the lock block and the connecting part can be penetrated by a safety belt, and the lock block is provided with a first position and a second position; in the first position, the minimum distance between the lock block and the connecting part is smaller than the thickness of the safety belt; in the second position, the minimum distance between the lock block and the connecting part is not less than the thickness of the safety belt;

the mounting seat is provided with a slide way, and the slide way is provided with a second end close to the locking block and a first end far away from the locking block;

the sliding block is arranged in the slide way, can slide from the first end to the second end and drives the locking block to move from the first position to the second position.

In some embodiments, the seatbelt adjustment device further includes a first elastic member urging the lock block from the second position to the first position.

In some embodiments, the locking piece is pivotally connected to the first and second sidewalls, and the locking piece is rotatable between the first and second positions.

In some embodiments, a first shaft hole is formed in the locking block; the safety belt adjusting device further comprises a pin shaft, the pin shaft penetrates through the first shaft hole, two ends of the pin shaft are respectively connected with the first side wall part and the second side wall part, and the locking block can rotate around the pin shaft.

In some embodiments, a plurality of anti-slip ribs are arranged on the locking block, one end of each anti-slip rib, which is far away from the first shaft hole, is located on a cylindrical surface, and the axis of the cylindrical surface is parallel to the axis of the first shaft hole; when the locking block is in the first position, the minimum distance between at least part of the anti-slip ribs and the connecting part is smaller than the thickness of the safety belt; when the locking piece is at the second position, the minimum distance between all the anti-skidding arrises and the connecting parts is not less than the thickness of the safety belt.

In some embodiments, the mounting seat includes a panel portion and a guide portion, one end of the guide portion is connected to the panel portion, and the chute is a through hole that penetrates through both the guide portion and the panel portion; the safety belt adjusting device further comprises a cover plate and a second elastic piece, wherein the cover plate is connected with one end, far away from the panel part, of the guide part; one end of the second elastic piece is connected with the cover plate, the other end of the second elastic piece is connected with the sliding block, and the second elastic piece presses the sliding block and enables the sliding block to be kept at the first end.

In some embodiments, a first limit block is arranged on the sliding block, a first notch is formed in one end, away from the panel portion, of the guide portion, and the first limit block can slide in the first notch along the length direction of the slide way; the cover plate is provided with a second notch, and one part of the sliding block penetrates through the second notch and can be in contact with the locking block.

In some embodiments, the seat belt adjusting device further comprises a flexible cover connected to the mounting base and sealing off the first end of the slide; when the flexible cover is pressed by external force, the flexible cover deforms and can push the sliding block to move towards the second end.

In some embodiments, the seat belt adjusting device further comprises a tab disposed in an area between the first and second side portions, a gap being present between the tab and the lock block for passage of the seat belt; when the locking block is at the first position, the minimum distance between the locking block and the lug is smaller than the thickness of the safety belt; when the locking piece is in the second position, the minimum distance between the locking piece and the projection is not less than the thickness of the safety belt.

A child safety seat comprising a seat body, a harness and a harness adjustment arrangement as claimed in any preceding claim, the base and the mount each being connected to the seat body, a portion of the harness passing through a gap between the lock block and the connection portion and passing out of the mount or the seat body.

Compared with the prior art, the utility model provides a safety belt adjusting device and children's safety seat user need not direct and locking piece contact when using, make simple, the convenience that the operation of adjusting safety belt length becomes, are favorable to promoting user's use and experience. Furthermore, the utility model discloses in the slider that sets up can prevent that children from missing to touch the locking piece, avoid children to be pressed from both sides and hinder, have better security.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a right side view of an embodiment of the present invention.

Fig. 3 is a left side view of an embodiment of the present invention.

Fig. 4 is a rear view of an embodiment of the present invention.

Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 6 is an isometric view of a mount in an embodiment of the invention.

Fig. 7 is a structural view of the mounting base in the bottom direction.

Fig. 8 is a structural diagram of the base, the locking block, the pin shaft and the first elastic member after being assembled according to the embodiment of the present invention.

Fig. 9 is a view in the direction indicated by the arrow B in fig. 8.

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 9 with the locking block in a first position.

Fig. 11 and 12 are structural diagrams of the slider in the embodiment of the present invention.

FIG. 13 is a schematic view of the locking block of FIG. 10 moved to a second position.

Fig. 14 is a structural view of a cover plate in the embodiment of the present invention.

Fig. 15 is a structural view of a child safety seat according to an embodiment of the present invention.

The reference numerals are explained below:

in the figure: 1. a mounting seat; 101. a panel portion; 102. a guide portion; 1021. a first notch; 1022. a threaded hole; 103. a cylinder; 104. a strip hole; 105. a slideway; 1051. a first end; 1052. a second end; 2. a flexible cover; 3. a locking block; 301. a first shaft hole; 302. anti-slip edges; 303. sinking a groove; 4. a base; 401. a first sidewall portion; 402. a second sidewall portion; 4021. a third shaft hole; 403. a connecting portion; 404. a second limiting block; 4041. a jack; 405. a bump; 5. a cover plate; 501. a boss; 502. a second notch; 503. Bolt holes; 6. a pin shaft; 7. a cotter pin; 8. a first elastic member; 9. a slider; 901. a first stopper; 902. a cavity; 903. an extension plate; 10. a second elastic member; 100. a seat belt adjusting device; 200. a seat belt; 300. a seat body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 14, the present invention provides a seat belt adjusting device 100, which includes a base 4, a lock block 3, a mounting seat 1 and a slider 9.

The base 4 includes a first side wall 401, a second side wall 402 and a connecting portion 403, wherein the first side wall 401 and the second side wall 402 are arranged at an interval and are connected to the connecting portion 403. The base 4 can be made of plastic or metal; when the base 4 is made of plastic, the plastic can be formed by injection molding or 3D printing; when the base 4 is made of metal, it may be formed by bending or cutting. As shown in fig. 8, in a preferred embodiment, the base 4 is a sheet metal member formed by bending, in this case, the first side wall portion 401 and the second side wall portion 402 are metal plates respectively located at both sides of the connecting portion 403, and the connecting portion 403 is provided with a bolt hole 503 for fixing with the seat body 300, so that the method for manufacturing the base 4 has advantages of simple process and low cost, and the manufactured base 4 has good structural strength.

The locking block 3 is arranged between the first side part 401 and the second side part 402, a gap between the locking block 3 and the connecting part 403 can be penetrated by the safety belt 200, and the locking block 3 has a first position (see the position of the locking block in fig. 10) and a second position (see the position of the locking block in fig. 13); in the first position, the minimum distance between the locking block 3 and the connecting part 403 is smaller than the thickness of the safety belt 200, and at this time, under the co-extrusion action of the locking block 3 and the connecting part 403, the safety belt 200 cannot slide between the locking block 3 and the connecting part 403, so that the locking of the safety belt 200 is realized; in the second position, the minimum distance between the locking piece 3 and the connecting portion 403 is not less than the thickness of the safety belt 200, and the safety belt 200 can slide freely between the locking piece 3 and the connecting portion 403, and the length of the safety belt 200 can be adjusted by pulling the safety belt 200.

The mounting seat 1 is provided with a slide way 105, and the slide way 105 is provided with a second end 1052 close to the locking block 3 and a first end 1051 far away from the locking block 3; as shown in fig. 7, the mount 1 includes a panel portion 101 and a guide portion 102, one end of the guide portion 102 is connected to the panel portion 101, and the slide passage 105 is a through hole penetrating both the guide portion 102 and the panel portion 101. The panel portion 101 may be a smooth curved surface, and the shape of the panel portion is adapted to the structure of the seat body 300. The mounting base 1 can be made of plastic by injection molding, and the panel portion 101 and the guide portion 102 are connected into a whole, and there is no seam between the panel portion 101 and the guide portion 102. In order to facilitate the assembly of the mount 1 to the seat body 300, four cylindrical bodies 103 are further provided around the guide portion 102, one end of each cylindrical body 103 is fixedly connected to the panel portion 101, and a side surface of each cylindrical body 103 may be connected to the guide portion 102 by a rib, thereby further improving the structural strength of the cylindrical body 103.

The sliding block 9 is disposed in the sliding channel 105, and the sliding block 9 can slide from the first end 1051 to the second end 1052 and drive the locking block 3 to move from the first position to the second position. When the length of the safety belt 200 needs to be adjusted, a pushing force is applied to the sliding block 9, the sliding block 9 slides from the first end 1051 to the second end 1052, meanwhile, one end of the sliding block 9 pushes the locking block 3 to move, the locking block 3 moves from the first position to the second position under the pushing force of the sliding block 9, and then the safety belt 200 can slide between the locking block 3 and the connecting portion 403 by pulling the safety belt 200, so that the length of the safety belt 200 can be adjusted.

In some embodiments, the seatbelt adjustment device 100 further includes a first elastic member 8, and the first elastic member 8 provides an elastic force to urge the lock block 3 to move from the second position to the first position. When pushing force is applied to the slider 9, the slider 9 slides in the slide way 105, one end of the slider 9 applies pushing force to the lock block 3 and overcomes the elastic force of the first elastic member 8, and the lock block 3 moves from the first position to the second position. When the external force applied to the sliding block 9 is removed, the first elastic member 8 can push the locking block 3 to return to the first position, so that the locking block 3 is automatically returned, and the locking block 3 is normally kept at the first position.

In some embodiments, the locking piece 3 is pivotally connected to the first sidewall 401 and the second sidewall 402, and the locking piece 3 can rotate between a first position and a second position. In specific implementation, the locking piece 3 is provided with a first shaft hole 301, and the first shaft hole 301 may be a circular hole and penetrates through two end faces of the locking piece 3; the seatbelt adjusting device 100 further includes a pin 6, the pin 6 penetrates through the first shaft hole 301, and both ends of the pin 6 are connected to the first side portion 401 and the second side portion 402, respectively, and the locking piece 3 can rotate around the pin 6. As shown in fig. 8, a second shaft hole (not shown) is provided on the first side part 401, a third shaft hole 4021 is provided on the second side part 402, one end of the pin 6 is inserted into the second shaft hole, the other end of the pin 6 is inserted into the third shaft hole 4021, and a cotter pin 7 or a nut is provided at an end of the pin 6 to achieve axial positioning of the pin 6.

In some embodiments, a cylindrical sinking groove 303 is formed in the locking piece 3, the sinking groove 303 is coaxial with the first shaft hole 301, the first elastic member 8 is a torsion spring and is installed in the sinking groove 303, one end of the first elastic member 8 is connected to the locking piece 3, the other end of the first elastic member 8 is connected to the base 4, and the first elastic member 8 provides an elastic force so that a portion of the locking piece 3 presses on the connecting portion 403. When the safety belt 200 is installed, an external force may be applied to the locking block 3 to separate the locking block 3 from the connecting portion 403, and then the safety belt 200 is inserted into the gap between the locking block 3 and the connecting portion 403, after the external force is removed, the safety belt 200 will be tightly clamped between the locking block 3 and the connecting portion 403 under the elastic force of the first elastic member 8, thereby implementing installation and locking of the safety belt 200.

The base 4 further includes a second limiting block 404, the second limiting block 404 is located between the first side upper portion 401 and the second side upper portion 402 and is fixedly connected to the first side upper portion 401, a gap exists between the second limiting block 404 and the connecting portion 403, and the rotation angle of the locking block 3 can be limited by the second limiting block 404, so that the rotation angle of the locking block 3 is prevented from being too large. When the first elastic member 8 is a torsion spring, in order to connect the other end of the first elastic member 8 with the base 4, a socket 4041 is disposed on the second limiting block 404, and one end of the first elastic member 8 is inserted into the socket 4041.

In some embodiments, the locking block 3 is provided with a plurality of anti-slip ribs 302, and one end of each of the plurality of anti-slip ribs 302 away from the first shaft hole 301 is located on a cylindrical surface, and the corresponding axis of the cylindrical surface is parallel to the axis of the first shaft hole 301; when the locking piece 3 is in the first position, the minimum distance between at least part of the anti-skid ribs 302 and the connecting part 403 is smaller than the thickness of the safety belt 200; when the locking piece 3 is in the second position, the minimum distance between all the anti-slip ribs 302 and the connecting part 403 is not less than the thickness of the safety belt 200.

As shown in fig. 10, the distance between one end of each anti-slip rib 302 away from the first shaft hole 301 from left to right and the axis of the first shaft hole 301 gradually increases, when the lock block 3 is at the first position, the friction force applied to the seat belt 200 will further increase by sliding the seat belt 200 to the left, and the friction force applied to the seat belt 200 will decrease by sliding the seat belt 200 to the right, so that the structural design realizes the unidirectional locking of the lock block 3 to the seat belt 200 at the first position.

In some embodiments, the seatbelt adjustment device 100 further includes a cover 5 and a second elastic member 10, the cover 5 being connected to an end of the guide portion 102 away from the panel portion 101; one end of the second elastic member 10 is connected to the cover plate 5, the other end of the second elastic member 10 is connected to the slider 9, and the second elastic member 10 presses the slider 9 and holds the slider 9 at the first end 1051.

As shown in fig. 14, the cover plate 5 is provided with bolt holes 503, the guide portion 102 is provided with screw holes 1022 corresponding to the bolt holes 503, and the cover plate 5 and the guide portion 102 are fixedly connected by fasteners such as bolts. Be provided with boss 501 on apron 5, be provided with the open cavity 902 of one end on slider 9, the open end orientation of cavity 902 the boss 501, second elastic component 10 is compression spring, and in the one end of second elastic component 10 inserted cavity 902, the other pot head of second elastic component 10 set up in the outside of boss 501, can realize the stable fixed of second elastic component 10 through the boss 501 and the cavity 902 that set up. Normally, the second elastic member 10 provides an elastic force to keep the slider 9 at the first end 1051; when the sliding block 9 is pressed by a certain external force, the sliding block 9 moves towards the second end 1052, the sliding block 9 pushes the locking block 3 to rotate to the second position, and at this time, the second elastic piece 10 contracts; when the external force acting on the slider 9 is removed, the elastic force of the second elastic member 10 itself pushes the slider 9 to move to the first position, and automatic rebound of the slider 9 is achieved.

In some embodiments, a first stopper 901 is disposed on the slider 9, a first notch 1021 is disposed at an end of the guide portion 102 away from the panel portion 101, and the first stopper 901 can slide in the first notch 1021 along a length direction of the slide 105; the cover plate 5 is provided with a second notch 502, and a part of the sliding block 9 passes through the second notch 502 and can be contacted with the locking block 3.

Referring to fig. 5, when the first stopper 901 is located at an end of the first notch 1021 away from the cover 5, the guide portion 102 prevents the first stopper 901 from moving further away from the cover 5, and at this time, the slider 9 is located at the first end 1051 of the slide 105; when the slider 9 is pressed, the slider 9 can slide towards the second end 1052 in the slide way 105, and the first limiting block 901 moves in the first notch 1021, when the slider 9 slides to the position of the second end 1052 of the slide way 105, the first limiting block 901 contacts with the cover 5, so that the cover 5 will prevent the slider 9 from sliding further in the direction approaching the locking piece 3. The sliding stroke of the slider 9 in the slide way 105 can be limited by the arrangement of the first limiting block 901 and the first notch 1021, so that the slider 9 is prevented from being separated from the slide way 105, and meanwhile, the slider 9 is prevented from being damaged due to excessive extrusion between the slider 9 and the locking block 3.

In addition, the sliding block 9 is provided with an extension plate 903, the extension plate 903 extends to the outer side of the slide way 105 through the second notch 502, and the extension plate 903 is used for contacting with the locking block 3 and pushing the locking block 3 to move from the first position to the second position.

In some embodiments, the seatbelt adjustment device 100 further comprises a flexible cover 2, the flexible cover 2 being connected to the mounting base 1 and blocking off the first end 1051 of the slide 105; when the flexible cover 2 is pressed by an external force, the flexible cover 2 deforms and pushes the slider 9 to move toward the second end 1052. This flexible lid 2 can adopt the TPE flexible glue material, can prevent effectively through the flexible lid 2 that sets up that debris such as toy, food from getting into in the gap between slider 9 and the mount pad 1, keep the clean health at relevant position, can avoid slider 9 to be taken place by the dead condition of card moreover.

In some embodiments, the seatbelt adjustment device 100 further includes a tab 405, the tab 405 is disposed in an area between the first side portion 401 and the second side portion 402, and a gap exists between the tab 405 and the lock block 3 for the seatbelt 200 to pass through; when the locking block 3 is in the first position, the minimum distance between the locking block 3 and the projection 405 is smaller than the thickness of the safety belt 200; when lock block 3 is in the second position, the minimum distance between lock block 3 and projection 405 is no less than the thickness of seat belt 200.

As shown in fig. 8 and 10, when the base 4 is a bent sheet metal part, the bump 405 may be directly stamped on the base 4, and the bump 405 and the base 4 are an integral structure. When the lock block 3 is in the first position, the safety belt 200 can be clamped between the lock block 3 and the connecting portion 403, and the safety belt 200 can also be clamped between the lock block 3 and the projection 405, and the friction force received by the safety belt 200 when the lock block 3 is in the first position is further increased by the projection 405, so that the safety belt 200 can be firmly fixed when the lock block 3 is in the first position.

The utility model provides a safety belt adjusting device 100 adopts newfashioned structural design, and its preparation technology is comparatively simple, and easy assembly is favorable to improving production, assembly efficiency, reduction in production cost.

Referring to fig. 15, the present invention further provides a child safety seat, which comprises a seat body 300, a safety belt 200 and any one of the safety belt adjusting devices 100, wherein the base 4 and the mounting seat 1 are both connected to the seat body 300, and a part of the safety belt 200 passes through a gap between the locking block 3 and the connecting portion 403 and passes out of the mounting seat 1 or the seat body 300. The panel portion 101 of the mounting seat 1 is provided with a long hole 104, and one end of the seatbelt 200 extends from the long hole 104 to the outside of the seat body 300 after passing through between the lock block 3 and the connecting portion 403.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A seatbelt adjustment device, comprising:

the locking block is arranged between the first side wall part and the second side wall part, a gap between the locking block and the connecting part can be penetrated by a safety belt, and the locking block is provided with a first position and a second position; in the first position, the minimum distance between the lock block and the connecting part is smaller than the thickness of the safety belt; in the second position, the minimum distance between the lock block and the connecting part is not less than the thickness of the safety belt;

the sliding block is arranged in the slide way and can slide from the first end to the second end and drive the locking block to move from the first position to the second position.

2. The seatbelt adjustment device according to claim 1, wherein: the locking device further comprises a first elastic piece which drives the locking piece to move from the second position to the first position.

3. The seatbelt adjustment device according to claim 1, wherein: the locking piece is pivoted with the first lateral upper portion and the second lateral upper portion, and the locking piece can rotate between the first position and the second position.

4. The seatbelt adjustment device according to claim 3, wherein: the locking block is provided with a first shaft hole; the safety belt adjusting device further comprises a pin shaft, the pin shaft penetrates through the first shaft hole, two ends of the pin shaft are respectively connected with the first side wall part and the second side wall part, and the locking block can rotate around the pin shaft.

5. The seatbelt adjustment device according to claim 4, wherein: a plurality of anti-slip ribs are arranged on the locking block, one ends of the anti-slip ribs, which are far away from the first shaft hole, are positioned on a cylindrical surface, and the axis corresponding to the cylindrical surface is parallel to the axis of the first shaft hole; when the locking block is in the first position, the minimum distance between at least part of the anti-slip ribs and the connecting part is smaller than the thickness of the safety belt; when the locking piece is at the second position, the minimum distance between all the anti-skidding arrises and the connecting parts is not less than the thickness of the safety belt.

6. The seatbelt adjustment device according to claim 1, wherein: the mounting seat comprises a panel part and a guide part, one end of the guide part is connected with the panel part, and the slide way is a through hole which simultaneously penetrates through the guide part and the panel part;

the safety belt adjusting device further comprises a cover plate and a second elastic piece, wherein the cover plate is connected with one end, far away from the panel part, of the guide part; one end of the second elastic piece is connected with the cover plate, the other end of the second elastic piece is connected with the sliding block, and the second elastic piece presses the sliding block and enables the sliding block to be kept at the first end.

7. The seatbelt adjustment device according to claim 6, wherein: a first limiting block is arranged on the sliding block, a first notch is formed in one end, far away from the panel portion, of the guide portion, and the first limiting block can slide in the first notch along the length direction of the slide way; the cover plate is provided with a second notch, and one part of the sliding block penetrates through the second notch and can be in contact with the locking block.

8. The seatbelt adjustment device according to any one of claims 1 to 7, wherein: the flexible cover is connected with the mounting seat and seals the first end of the slide way; when the flexible cover is pressed by external force, the flexible cover deforms and can push the sliding block to move towards the second end.

9. The seatbelt adjustment device according to any one of claims 1 to 7, characterized in that: the safety belt buckle further comprises a bump, the bump is arranged in the area between the first side part and the second side part, and a gap is reserved between the bump and the lock block for a safety belt to pass through; when the locking piece is at the first position, the minimum distance between the locking piece and the lug is smaller than the thickness of the safety belt; when the locking piece is in the second position, the minimum distance between the locking piece and the projection is not less than the thickness of the safety belt.

10. A child safety seat, comprising: a seat body, a seat belt, and the seat belt adjusting device of any one of claims 1 to 9, the base and the mount each being connected to the seat body, a portion of the seat belt passing through a gap between the lock block and the connecting portion and passing out of the mount or the seat body.