A child safety seat structure

Abstract

This utility model discloses a child safety seat structure, including a base and a backrest. Opposing rotating bodies are provided on both sides of the bottom of the backrest, with their rotation axes aligned on the same axis. The base has mounting grooves on both sides for the corresponding rotating bodies to insert and form a rotatable connection; alternatively, the base has opposing rotating bodies on both sides, and the backrest has mounting grooves on both sides of the bottom of the backrest for the corresponding rotating bodies to insert and form a rotatable connection. A first through hole is formed in the center of the bottom surface of the mounting groove, and a second through hole, coaxial with the first through hole, is formed in the center of the rotating body. The first and second through holes are connected by fasteners. Near the edge of the bottom surface of the mounting groove, there are circumferentially spaced protrusions, with grooves between adjacent protrusions. The grooves and protrusions are smoothly transitioned by rounded corners. The top surface of the protrusions is a horizontal surface that abuts against the rotating bodies. This utility model allows for angle adjustment of the backrest relative to the base.

Description

Technical Field

[0001] This utility model relates to the field of child safety seat technology, and in particular to a child safety seat structure. Background Technology

[0002] Child safety seats are very common nowadays. A typical child safety seat on the market consists of a base and a seat. The seat is slidably connected to the base, meaning the seat can slide relative to the base. The sliding trajectory is usually arc-shaped. The seat can adjust its angle by sliding back and forth. However, this angle adjustment method involves the entire seat sliding together, that is, the seat and backrest slide together, rather than the backrest adjusting its angle separately. Therefore, in this angle adjustment method, the angle between the seat and the backrest is actually fixed. Only the overall position of the seat and backrest is adjusted. Utility Model Content

[0003] The purpose of this utility model is to design a child safety seat structure to overcome the shortcomings of the above-mentioned technology.

[0004] This utility model designs a child safety seat structure, including a base and a backrest. The bottom of the backrest has two opposing rotating bodies on its sides, with their rotation axes aligned on the same axis. The base has mounting grooves on both sides for the corresponding rotating bodies to be inserted and rotatably connected. Alternatively, the base has opposing rotating bodies on both sides, and the bottom of the backrest has mounting grooves on both sides for the corresponding rotating bodies to be inserted and rotatably connected. A first through hole is formed in the center of the bottom surface of the mounting groove, and a second through hole, coaxial with the first through hole, is formed in the center of the rotating body. The first and second through holes are connected by fasteners. The bottom surface of the mounting groove has circumferentially spaced protrusions near its edge, with grooves between adjacent protrusions. The grooves and protrusions are smoothly transitioned by rounded corners. The top surface of each protrusion is a horizontal surface that abuts against the rotating body.

[0005] Preferably, the two sides of the base extend upward to form a first support seat, and the two sides of the bottom of the backrest extend downward to form a second support seat. The mounting groove or rotating body of the base is disposed on the first support seat, and the mounting groove or rotating body of the backrest is disposed on the second support seat.

[0006] Further optimization involves making the rotating body cylindrical or frustum-shaped, and the mounting groove correspondingly cylindrical or frustum-shaped.

[0007] Further optimization involves the following: after the backrest is rotatably connected to the base, two second support seats are located on the outside of the two first support seats respectively. The interior of the second support seat is provided with a cavity, and reinforcing ribs are distributed in the cavity.

[0008] Further optimization involves the reinforcing ribs being arranged radially around the second through hole.

[0009] Further optimization involves the base being a one-piece injection-molded structure with an embedding groove on its seat surface. A block of soft material is placed inside the embedding groove to make the seat surface of the base a soft surface.

[0010] Further optimization involves the backrest having several perforated holes or perforated areas.

[0011] Preferably, a boss is formed in the center of the bottom surface of the mounting groove, the top surface of the boss is flat and abuts against the rotating body, and a gap is left between the boss and the protrusion.

[0012] The technical advantage of this utility model is that it includes a base and a backrest. The base and the backrest are connected by a mounting groove and a rotating body, which allows the backrest to rotate relative to the base. After rotating to a certain angle, it is tightened and fixed by fasteners. Therefore, the angle of the backrest relative to the base can be adjusted. The structure is simple and easy to implement. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is an exploded view of the overall structure of this utility model;

[0015] Figure 3 This is a sectional view of the structure after the rotating body and the mounting groove are fitted together;

[0016] Figure 4 This is an enlarged view of the mounting slot.

[0017] In the diagram: 1. Base; 11. First support seat; 12. Embedded groove; 13. Block; 2. Backrest; 21. Second support seat; 22. Cavity; 23. Reinforcing rib; 24. Hollow hole; 3. Rotating body; 31. Second through hole; 4. Mounting groove; 41. First through hole; 42. Protrusion; 43. Groove; 44. Horizontal plane; 45. Boss; 46. Gap; 5. Fastener. Detailed Implementation

[0018] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0019] This utility model is a child safety seat structure, which includes a base 1 and a backrest 2. This utility model can be regarded as a complete safety seat, which can be directly installed on a car seat for use. This utility model can also be a non-complete safety seat, but rather an internal skeleton of a seat structure, on which a soft material is wrapped to form a complete safety seat.

[0020] The backrest 2 has two opposing rotating bodies 3 on its bottom sides, and the rotation axes of the two rotating bodies 3 are on the same axis. The base 1 has mounting slots 4 on both sides for the corresponding rotating bodies 3 to be inserted and form a rotatable connection; or the base 1 has opposing rotating bodies 3 on both sides, and the backrest 2 has mounting slots 4 on both sides of its bottom for the corresponding rotating bodies 3 to be inserted and form a rotatable connection. That is, the backrest 2 and the base 1 are rotatably connected, and the backrest 2 can be rotated relative to the base 1, thereby realizing the angle adjustment of the backrest 2 relative to the base 1.

[0021] The specific structure is as follows: a first through hole 41 is opened in the center of the bottom surface of the mounting groove 4, and a second through hole 31 coaxial with the first through hole 41 is opened in the center of the rotating body 3. The first through hole 41 and the second through hole 31 are connected by a fastener 5. The fastener 5 is a bolt, screw or screw and a nut to form a fastening, which fixes the rotating body 3 in the mounting groove 4. When it is necessary to adjust the angle of the backrest 2, the fastener 5 needs to be loosened.

[0022] Furthermore, the rotating body 3 is cylindrical or frustum-shaped, and the mounting groove 4 is correspondingly cylindrical or frustum-shaped, so that the rotating body 3 can rotate when inserted into the mounting groove 4.

[0023] Furthermore, the bottom surface of the mounting groove 4 is provided with circumferentially spaced protrusions 42 near the edge, and grooves 43 are provided between adjacent protrusions 42. That is, the protrusions 42 and grooves 43 are spaced apart, and the grooves 43 and protrusions 42 are smoothly transitioned by rounding corners, so that the grooves 43 and protrusions 42 as a whole form a wave-like undulating surface structure. The top surface of the protrusions 42 is a horizontal surface 44, which extends radially along the mounting groove 4. That is, the length direction of the horizontal surface 44 is the radial direction of the mounting groove 4.

[0024] A boss 45 is formed at the center of the bottom surface of the mounting groove 4. A first through hole 41 is located at the center of the boss 45. The boss 45 is cylindrical or frustum-shaped. A ring of protrusions 42 surrounds the boss 45, and an annular gap 46 is left between the boss 45 and the protrusions 42. The top surface of the boss 45 is flush with the top surface of the protrusions 42. The top surface of the boss 45 is flat and abuts against the rotating body 3. When the rotating body 3 is inserted into the mounting groove 4, the end face of the insertion end of the rotating body 3 abuts against the horizontal surface 44 of the protrusion 42, and at the same time, the end face of the insertion end of the rotating body 3 abuts against the top surface of the boss 45, that is, rotation. After the body 3 is fixed in the mounting groove 4, the end face of the rotating body 3 and the boss 45 of the mounting groove 4 form a surface contact, and the end face of the rotating body 3 and the protrusion 42 form a point contact. This not only increases static friction, but also avoids the end face of the rotating body 3 and the bottom surface of the mounting groove 4 from forming a complete surface contact. This is because after the fastener 5 is tightened, the rotating body 3 and the boss 45 may undergo some deformation. If the rotating body 3 and the mounting groove 4 are in complete surface contact, the connection between the rotating body 3 and the boss 45 will not be firm. The gap 46 can accommodate the deformation of the boss 45 or the protrusion 42.

[0025] Furthermore, the two sides of the base 1 extend upward to form the first support seat 11, and the two sides of the bottom of the backrest 2 extend downward to form the second support seat 21. The mounting groove 4 or the rotating body 3 of the base 1 is set on the first support seat 11, and the mounting groove 4 or the rotating body 3 of the backrest 2 is set on the second support seat 21. That is, the first support seat 11 and the base 1 are integrated, and the second support seat 21 and the backrest 2 are integrated. In this embodiment, the base 1 and the backrest 2 are both made of plastic and are made by one-piece injection molding. In this way, the first support seat 11 has a certain deformation capacity relative to the base 1, and the second support seat 21 also has a certain deformation capacity relative to the backrest 2, which makes it easy for the rotating body 3 to be inserted into the groove 43.

[0026] After the backrest 2 is rotatably connected to the base 1, the two second support seats 21 are located on the outside of the two first support seats 11 respectively. The interior of the second support seat 21 is provided with a cavity 22, and reinforcing ribs 23 are distributed in the cavity 22. The reinforcing ribs 23 are arranged radially with the second through hole 31 as the center, forming a spider web-like reinforcing rib 23, which makes the second support seat 21 stronger and prevents the second support seat 21 from cracking when the fastener 5 is tightened.

[0027] Furthermore, the seat surface of the base 1 is provided with an embedding groove 12, and a block 13 of soft material, such as sponge, silicone or rubber, is provided in the embedding groove 12 to make the seat surface of the base 1 a soft surface and increase the comfort of the base 1.

[0028] Furthermore, the backrest 2 has several perforated holes 24 or perforated areas to reduce the weight of the backrest 2 and increase breathability.

[0029] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A child safety seat structure, characterized by, It includes a base (1) and a backrest (2). The backrest (2) has two opposing rotating bodies (3) on its bottom sides, and the rotation axes of the two rotating bodies (3) are on the same axis. The base (1) has mounting grooves (4) on its sides for the corresponding rotating bodies (3) to be inserted and to form a rotatable connection. Alternatively, the base (1) has opposing rotating bodies (3) on its sides, and the backrest (2) has mounting grooves (4) on its bottom sides for the corresponding rotating bodies (3) to be inserted and to form a rotatable connection. The mounting groove (4) has a first through hole (41) in the center of its bottom surface. The rotating body (3) has a second through hole (31) coaxial with the first through hole (41) in the center. The first through hole (41) and the second through hole (31) are connected by fasteners (5). The bottom surface of the mounting groove (4) has circumferentially spaced protrusions (42) near the edge. There are grooves (43) between adjacent protrusions (42). The grooves (43) and the protrusions (42) are smoothly transitioned by rounding the corners. The top surface of the protrusions (42) is a horizontal surface (44) that abuts against the rotating body (3).

2. A child safety seat structure according to claim 1, wherein The base (1) extends upward on both sides to form a first support seat (11), and the backrest (2) extends downward on both sides at the bottom to form a second support seat (21). The mounting groove (4) or rotating body (3) of the base (1) is set on the first support seat (11), and the mounting groove (4) or rotating body (3) of the backrest (2) is set on the second support seat (21).

3. The child safety seat structure according to claim 2, characterized in that, The rotating body (3) is cylindrical or frustum-shaped, and the mounting groove (4) is correspondingly cylindrical or frustum-shaped.

4. The child safety seat structure according to claim 3, characterized in that, When the backrest (2) is rotatably connected to the base (1), the two second support seats (21) are located on the outside of the two first support seats (11) respectively. The interior of the second support seat (21) is provided with a cavity (22), and the cavity (22) is provided with reinforcing ribs (23).

5. A child safety seat structure according to claim 4, characterized in that, The reinforcing ribs (23) are arranged radially around the second through hole (31).

6. The child safety seat structure according to claim 2, characterized in that, The base (1) is an integral injection-molded structure with an embedded groove (12) on its seat surface. A soft material block (13) is provided in the embedded groove (12) so that the seat surface of the base (1) is a soft surface.

7. A child safety seat structure according to claim 2, characterized in that, The backrest (2) has several perforated holes (24) or perforated areas.

8. A child safety seat structure according to claim 1, characterized in that, A boss (45) is formed in the center of the bottom surface of the mounting groove (4). The top surface of the boss (45) is flat and abuts against the rotating body (3). A gap (46) is left between the boss (45) and the protrusion (42).

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