A child safety seat with an adjustable seat surface

Abstract

The present invention relates to a child safety seat with an adjustable seat surface, which comprises a seat body. The seat body includes a backrest and a seat. A seat surface assembly capable of sliding back and forth is arranged on the seat. The seat surface assembly slides forward or backward relative to the seat to extend or restore the seat surface length of the seat. The child safety seat with an adjustable seat surface according to the present invention is provided with a slidable seat surface assembly. When it is necessary to fix a child using a vehicle seat belt, the gear of the connection between the seat surface assembly and the base can be adjusted through a handle to the required length. At this time, the seat belt installation path on the seat body can be exposed for the user to install and use normally. At the same time, the extended seat surface of the seat can better support the thighs of the child, providing better protection and comfort for the child.

Description

Technical Field

[0001] The present invention relates to the technical field of child safety seats, and more particularly to a child safety seat with an adjustable seat surface. Background Art

[0002] An automotive child safety seat, also known as a child restraint system (CRS), is a seat designed specifically for children of different ages or weights, installed in a vehicle, and capable of effectively improving the safety of children when riding in the vehicle. In the event of a vehicle collision or sudden deceleration, it reduces the impact force on the child and restricts the movement of the child's body to reduce harm to them and ensure the safety of the child during the ride.

[0003] Most of the seat cushions of existing child safety seats cannot be adjusted forward and backward, which affects the comfort and safety of children when sitting. Some child safety seats that can be adjusted forward and backward can only achieve the adjustment between the seat body and the base, and cannot achieve the adjustment of the seat surface length. As a result, they cannot support the thighs of children, and cannot provide more protection and comfort to children. In addition, the adjustment mechanism has a complex structure and cumbersome operation, which affects the user experience. Sometimes, users need to use the vehicle seat belt to fix the child, so an installation slot for the vehicle seat belt needs to be provided on the child safety seat. However, when the vehicle seat belt is not used, the installation slot will affect the protection of the child by the child safety seat. Summary of the Invention

[0004] The present invention designs a child safety seat with an adjustable seat surface. The technical problem it solves is that existing child safety seats cannot achieve the adjustment of the seat surface length, thus cannot support the thighs of children, cannot provide more protection and comfort to children, and the adjustment mechanism has a complex structure and cumbersome operation, affecting the user experience. At the same time, the installation slot for the vehicle seat belt will affect the protection of the child by the child safety seat.

[0005] To solve the above-mentioned existing technical problems, the present invention adopts the following solutions:

[0006] A child safety seat with an adjustable seat surface, comprising a seat body, the seat body including a backrest and a seat cushion, characterized in that: a seat surface assembly that can slide forward and backward is provided on the seat cushion, and the seat surface assembly slides forward or backward relative to the seat cushion to extend or restore the seat surface length of the seat cushion.

[0007] Further, at least one slide rail is provided on the seat cushion, and a sliding portion or a slider that cooperates with the slide rail is provided on the back surface of the seat surface assembly.

[0008] Further, the shape of the seat surface assembly is a U shape that matches the shape of the seat cushion, and the seat surface assembly is arranged in a fitting manner with the seat cushion.

[0009] Further, it further includes a locking and unlocking mechanism, which is used to lock or unlock the seat surface assembly with the seat or the base.

[0010] Further, the locking and unlocking mechanism includes a locking mechanism and an unlocking mechanism. The locking mechanism includes a clamping member and a clamping portion. The clamping member is connected to the seat surface assembly, and the clamping portion is arranged on the seat or the base. The unlocking mechanism is used to unlock the locking mechanism.

[0011] Further, the clamping member includes a clamping member body and a positioning pin. The positioning pin is arranged on the left side and / or the right side of the clamping member body in a left-right movable manner, and a plurality of positioning holes matching with the positioning pin are formed on the clamping portion.

[0012] Further, the unlocking mechanism includes a movable plate and a transmission rod. A long slot hole is formed on the movable plate. The long slot hole inclines inwards from front to back. One end of the transmission rod is inserted into the long slot hole, and the other end of the transmission rod is connected to the upper side or the lower side of the positioning pin. When the movable plate moves forward, it drives the transmission rod to move inwards along the long slot hole, so that the positioning pin moves inwards and disengages from the positioning hole.

[0013] Further, an elastic mechanism for resetting the positioning pin is further arranged between the positioning pin and the clamping member body.

[0014] Further, an adjusting handle for pulling the movable plate to move is further arranged at the front end of the movable plate.

[0015] Further, the movable plate is arranged at the rear end of the clamping member body. A sliding groove for the movable plate to slide back and forth is formed on the clamping member body. The clamping member is arranged between the seat and the base. Matching fixing grooves and fixing columns are arranged on the clamping member and the seat surface assembly. A through groove for the connecting portion of the clamping member and the seat surface assembly to slide back and forth is formed on the seat.

[0016] The child safety seat with an adjustable seat surface has the following beneficial effects:

[0017] The child safety seat with an adjustable seat surface according to the present invention is provided with a slidable seat surface assembly. When it is necessary to fix a child with a vehicle seat belt, the gear of the connection between the seat surface assembly and the base can be adjusted through a handle to adjust it to the required length. At this time, the seat belt installation path on the seat body can be exposed for the user to install and use normally. When it is not needed, the seat surface assembly can be adjusted to the shortest state, so that the child safety seat can better and more comprehensively protect the child. At the same time, the extended seat surface can better support the child's thighs, giving the child better protection and comfort. Description of the Drawings

[0018] Figure 1 : Schematic diagram of the shortest state of the seat surface of the child safety seat with adjustable seat surface according to the present invention;

[0019] Figure 2 : Side schematic diagram of the shortest state of the seat surface of the child safety seat with adjustable seat surface according to the present invention;

[0020] Figure 3 : Side schematic diagram of the extended state of the seat surface of the child safety seat with adjustable seat surface according to the present invention;

[0021] Figure 4 : Exploded view of the child safety seat with adjustable seat surface according to the present invention;

[0022] Figure 5 : Schematic diagram of the installation state of the vehicle seat belt of the child safety seat with adjustable seat surface according to the present invention;

[0023] Figure 6 : Schematic diagram of the locked state of the seat surface assembly of the child safety seat with adjustable seat surface according to the present invention;

[0024] Figure 7 : Schematic diagram of the unlocked state of the seat surface assembly of the child safety seat with adjustable seat surface according to the present invention;

[0025] Figure 8 : Schematic diagram of the positioning member of the child safety seat with adjustable seat surface according to the present invention.

[0026] Description of reference numerals:

[0027] 1 - Base; 2 - Positioning member; 21 - Positioning member body; 22 - Positioning pin; 23 - Positioning hole; 3 - Seat surface assembly; 4 - Seat body; 41 - Long slot hole; 5 - Connecting rod; 6 - Adjusting handle; 7 - Fixed column; 8 - Transmission rod; 9 - Movable plate; 10 - Base bracket; 11 - Arc-shaped chute; 12 - Installation groove. Detailed implementation manners

[0028] The following is further description of the present invention in conjunction with Figures 1 to 8 ,:

[0029] Such as Figure 1 , Figure 4 And Figure 8As shown in the figure, a child safety seat with an adjustable seat surface includes a base 1 and a seat body 4. The seat body 4 is slidably connected to the base 1 through an angle adjustment component. The angle adjustment component includes a base bracket 10 and a connecting rod 5. The base bracket 10 is arranged on the base 1 and includes a left base bracket and a right base bracket. Arc-shaped sliding grooves 11 for the connecting rod 5 to pass through are formed on both the left base bracket and the right base bracket. Both ends of the connecting rod 5 are fixed to the seat body 4, and the rod body of the connecting rod 5 is arranged in the arc-shaped sliding grooves 11 of the left base bracket and the right base bracket, so that the seat body 4 can slide relative to the base 1 along the arc-shaped sliding grooves 11 to adjust the tilt angle of the seat body 4.

[0030] The seat body 4 includes a backrest and a seat. An installation path for installing a vehicle seat belt, that is, an installation groove 12, is arranged at the connection between the backrest and the seat. A seat surface component 3 that can slide back and forth is arranged on the seat. A slide rail is arranged on the seat, and a sliding part or a slider that cooperates with the slide rail is arranged on the back surface of the seat surface component 3. The shape of the seat surface component 3 is U-shaped and matches the shape of the seat. The seat surface component is arranged in a fitting manner with the seat. The seat surface component 3 includes a seat surface in the middle and a left wing and a right wing connected to the left and right sides of the seat surface. The left wing and the right wing correspond to the positions of the left and right two installation grooves of the seat body 4. When the seat surface component 3 slides forward, the installation grooves hidden by the left wing and the right wing will be exposed.

[0031] It also includes a locking and unlocking mechanism for locking or unlocking the seat surface component 3 with the base 1. The locking and unlocking mechanism includes a locking mechanism and an unlocking mechanism.

[0032] The locking mechanism includes a clamping part 2 and a engaging part. The clamping part 2 is connected to the seat surface component 3. The clamping part 2 includes a clamping part body 21 and two positioning pins 22. The clamping part body 21 is arranged between the seat and the base 1. A plurality of fixing columns 7 are arranged on the clamping part body 21. A plurality of fixing grooves that cooperate with the fixing columns 7 are arranged on the lower side surface of the seat surface component 3. A through groove for the fixing columns 7 to slide back and forth is formed on the seat. The positioning pins 22 are arranged on the left and right sides at the rear end of the clamping part body 21 in a manner that can move left and right.

[0033] The engaging part is arranged on the left base bracket and the right base bracket. A plurality of positioning holes 23 that cooperate with the positioning pins 22 are formed on the left base bracket and the right base bracket. When the positioning pins 22 are inserted into the positioning holes 23, the seat surface component 3 is fixed on the base 1 and cannot slide. When the positioning pins 22 are disengaged from the positioning holes 23, the seat surface component 3 can slide back and forth relative to the base 1, thereby exposing the installation path of the vehicle seat belt and providing sufficient support for the child's thighs.

[0034] The unlocking mechanism is used to unlock the locking mechanism. The unlocking mechanism includes a movable plate 9 and two transmission rods 8. The movable plate 9 is arranged at the rear end of the clamping member body 21 and cooperates with the positioning pin 22. A sliding groove for the forward and backward sliding of the movable plate 9 is formed on the clamping member body 21. Two long slot holes 41 are formed on the movable plate 9. The long slot holes 41 are inclined inward from front to back. One end of the transmission rod 8 is inserted into the long slot hole 41, and the other end of the transmission rod 8 is connected to the upper side of the positioning pin 22. When the movable plate 9 moves forward, it drives the transmission rod 8 to move inward along the long slot hole 41. The transmission rod 8 pulls the positioning pin 22 to move inward so that it disengages from the positioning hole 23, thereby unlocking the locking mechanism. A return spring for resetting the positioning pin 22 is also arranged between the positioning pin 22 and the clamping member body 21. The front end of the movable plate 9 is also connected with an adjusting handle 6 for pulling the movable plate 9 to move forward and backward. The adjusting handle 6 is exposed at the front end of the clamping member body 21 for the user to use.

[0035] The working principle of the present invention is as follows:

[0036] As Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 shown, when it is necessary to fix a child with a vehicle seat belt, pull the adjusting handle 6 forward. The adjusting handle 6 drives the movable plate 9 to slide forward. The two long slot holes 41 on the movable plate 9 respectively push the transmission rods 8 on the same side to move inward. The transmission rods 8 drive the positioning pins 22 to move inward and separate from the positioning holes 23 to unlock. At this time, the return spring is compressed, and the seat surface assembly 3 is pushed forward to the required length. Release the adjusting handle 6. The positioning pin 22 is engaged with the positioning hole 23 at this position under the reset action of the return spring to fix the seat surface assembly 3. Or release the adjusting handle 6 and push the seat surface assembly 3 to make fine adjustments forward and backward so that the positioning pin 22 is engaged with the nearby positioning hole 23 to fix it. Or continue to pull the adjusting handle 6 after unlocking to make the movable plate 9 push the clamping member body 21 forward, thereby driving the seat surface assembly 3 to move forward to the required length. At this time, the installation path of the vehicle seat belt on the seat body 4 is exposed for the user to use. At the same time, since the seat surface assembly extends, the seat surface elongates, and the elongated seat surface can provide better support for the child's thighs to improve its protection and comfort.

[0037] The present invention has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the implementation of the present invention is not limited by the above-mentioned manner. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A child safety seat with an adjustable seat surface, Characterized in that: It includes a seat body (4), and the seat body (4) includes a backrest and a seat. It is characterized in that: a seat surface component (3) that can slide back and forth is provided on the seat, and the seat surface component (3) slides forward or backward relative to the seat to extend or restore the seat surface length of the seat; it also includes a locking and unlocking mechanism, and the locking and unlocking mechanism is used to lock or unlock the seat surface component (3) with the seat or the base (1); the locking and unlocking mechanism includes a locking mechanism and an unlocking mechanism, the locking mechanism includes a clamping member (2) and a clamping portion, the clamping member (2) is connected to the seat surface component (3), the clamping portion is provided on the seat or the base (1), and the unlocking mechanism is used to unlock the locking mechanism; the clamping member (2) includes a clamping member body (21) and a positioning pin (22), the positioning pin (22) is movably arranged on the left side and / or the right side of the clamping member body (21), and a number of positioning holes (23) matching the positioning pin (22) are provided on the clamping portion; a mounting path for installing a vehicle seat belt, that is, a mounting groove (12), is provided at the connection between the backrest and the seat. The seat surface component (3) includes a seat surface in the middle and a left wing and a right wing connected to the left and right sides of the seat surface. The left wing and the right wing correspond to the positions of the left and right two mounting grooves (12) of the seat body (4). When the seat surface component (3) slides forward, the mounting groove (12) hidden by the left wing and the right wing will be exposed.

2. A child safety seat with an adjustable seat surface according to claim 1, Characterized in that: At least one slide rail is provided on the seat, and a sliding portion or a slider matching the slide rail is provided on the back surface of the seat surface component (3).

3. A child safety seat with an adjustable seat surface according to claim 1, Characterized in that: The shape of the seat surface component (3) is a U shape matching the shape of the seat, and the seat surface component (3) is attached to the seat.

4. A child safety seat with an adjustable seat surface according to any one of claims 1-3, Characterized in that: The unlocking mechanism includes a movable plate (9) and a transmission rod (8). A long slot hole (41) is provided on the movable plate (9), and the long slot hole (41) is inclined inward from front to back. One end of the transmission rod (8) is inserted into the long slot hole (41), and the other end of the transmission rod (8) is connected to the upper side or the lower side of the positioning pin (22). When the movable plate (9) moves forward, it drives the transmission rod (8) to move inward along the long slot hole (41), so that the positioning pin (22) moves inward and disengages from the positioning hole (23).

5. A child safety seat with an adjustable seat surface according to claim 4, Characterized in that: An elastic mechanism for resetting the positioning pin (22) is further provided between the positioning pin (22) and the clamping member body (21).

6. A child safety seat with an adjustable seat surface according to claim 5, Characterized in that: The front end of the movable plate (9) is further provided with an adjusting handle (6) for pulling the movable plate (9) to move.

7. A child safety seat with an adjustable seat surface according to claim 6, wherein: The movable plate (9) is arranged at the rear end of the clamping member body (21), a sliding groove for the front and back sliding of the movable plate (9) is formed on the clamping member body (21), the clamping member (2) is arranged between the seat and the base (1), mutually matching fixing grooves and fixing posts (7) are arranged on the clamping member (2) and the seat surface assembly (3), and a through groove for the front and back sliding of the connecting part of the clamping member (2) and the seat surface assembly (3) is formed on the seat.

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