Child safety seat with adjustable backrest

Abstract

The child safety seat with the adjustable backrest comprises a seat body used for supporting the buttocks of a child and the backrest used for supporting the back of the child, the backrest and the seat body are rotationally matched, and an angle adjusting mechanism used for adjusting the inclination angle of the backrest is arranged between the backrest and the seat body. The angle adjusting mechanism comprises a damping groove, a damping piece and an elastic piece, the damping groove is formed in one of the seat and the backrest, and the multiple damping grooves are arranged at intervals along the rotating path of the backrest; the damping piece is movably arranged on the other one of the seat and the backrest and has a limited state in which the damping piece is matched with the damping groove to keep the inclination angle of the backrest, and a release state in which the damping piece retreats from the damping groove after the backrest is stressed; the elastic piece acts on the damping piece to enable the damping piece to be kept in a limited state, an unlocking piece and a corresponding linkage structure are omitted, and operation and assembly are facilitated.

Description

Technical Field

[0001] This application relates to the technical field of child safety seats, and specifically to a child safety seat with an adjustable backrest. Background Art

[0002] Existing child safety seats include a base and a backrest that are rotatably engaged. An angle adjustment mechanism for adjusting the angle of the backrest is provided between the backrest and the base. This angle adjustment mechanism is mostly hard-locked and is equipped with a corresponding unlocking member for unlocking the angle adjustment mechanism. That is, before adjusting the angle of the backrest, it is necessary to operate the unlocking member to unlock, and generally a reset mechanism is configured. Therefore, it is necessary to maintain the unlocking action until the backrest is adjusted and then release the unlocking action, which is cumbersome to operate. Utility Model Content

[0003] This application provides a child safety seat with an adjustable backrest, which is more convenient to operate.

[0004] This application provides a child safety seat with an adjustable backrest, including a seat for supporting a child's buttocks and a backrest for supporting a child's back. The backrest and the seat are rotatably engaged, and an angle adjustment mechanism for adjusting the inclination angle of the backrest is provided between the backrest and the seat. The angle adjustment mechanism includes:

[0005] Damping grooves, which are provided in one of the seat and the backrest, and there are multiple damping grooves arranged at intervals along the rotation path of the backrest;

[0006] Damping members, which are movably arranged in the other of the seat and the backrest, and have a restricted state of cooperating with the damping grooves to maintain the inclination angle of the backrest, and a released state in which the damping members withdraw from the damping grooves after the backrest is stressed;

[0007] Elastic members, which act on the damping members to keep them in the restricted state.

[0008] The following also provides several optional ways, but they are not additional limitations to the above overall solution, but only further supplements or optimizations. Without technical or logical contradictions, each optional way can be combined with the above overall solution alone, or multiple optional ways can be combined with each other.

[0009] Optionally, the rear side of the seat has an upwardly extending connecting portion, and a notch is provided in the middle of the connecting portion. The backrest extends into the notch and is rotatably connected to the connecting portion.

[0010] Optionally, the rotation axis of the backrest is arranged close to the bottom of the connecting portion, and the angle adjustment mechanism is arranged close to the top of the connecting portion.

[0011] Optionally, there are two groups of damping grooves, which are respectively arranged on both sides of the backrest;

[0012] The damping members and the elastic members are in two groups and are arranged at the connecting portion.

[0013] Optionally, the damping member is slidably arranged on the seat.

[0014] Optionally, the sliding direction of the damping member is perpendicular to the rotation plane of the backrest.

[0015] Optionally, the end face of the damping member extending into the damping groove is an arc surface, and the damping groove is an arc groove matching the arc surface.

[0016] Optionally, the child safety seat includes a limiting structure for restricting the rotation range of the backrest.

[0017] Optionally, the seat includes a hollow housing and two connecting seats inside the housing. The housing includes a first part and a second part that are buckled with each other. The two connecting seats are arranged on both sides of the backrest. The backrest has pivot shafts that protrude outwardly from both sides of itself. The two pivot shafts pass through the housing and are respectively rotatably connected to the two connecting seats.

[0018] Optionally, the damping members are in two groups and are arranged on the connecting seats.

[0019] For the child safety seat of the present application, the backrest is softly locked by the damping force, eliminating the unlocking member and the corresponding linkage structure, which facilitates operation and assembly. Description of the Drawings

[0020] Figure 1 is a structural view of a child safety seat according to an embodiment of the present application;

[0021] Figure 2 is Figure 1 the front view of the child safety seat in

[0022] Figure 3 is Figure 2 the front view of the child safety seat in

[0023] Figure 4 is Figure 1 the exploded view between the seat and the backrest in

[0024] Figure 5 is Figure 4 the enlarged view of part A in

[0025] Figure 6 is Figure 4 the enlarged view of part B in

[0026] Figure 7 is Figure 1 the exploded view of the seat in

[0027] Figure 8 Structural view of the backrest of a child safety seat according to an embodiment of the present application;

[0028] Figure 9 Structural view of the seat of a child safety seat according to an embodiment of the present application.

[0029] The descriptions of the reference numerals in the figures are as follows:

[0030] 1000, child safety seat;

[0031] 110, seat; 111, connecting part; 112, notch; 113, connecting seat; 114, first part; 115, second part; 116, third limiting surface;

[0032] 120, backrest; 121, damping groove; 122, pivot; 123, elastic member; 124, limiting groove; 125, first limiting surface; 126, second limiting surface;

[0033] 130, damper; 131, arc surface. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] In this application, terms such as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity or order of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] Referring to Figures 1 to 7 , this application provides a child safety seat with an adjustable backrest (hereinafter referred to as child safety seat 1000), which includes a seat 110 for supporting the child's buttocks and a backrest 120 for supporting the child's back. The backrest 120 and the seat 110 are rotationally engaged so that the backrest 120 has multiple inclination angles relative to the seat 110. The child safety seat 1000 has a width direction where the figure X is located, and a central symmetry plane, and the child safety seat 1000 has a front side and a relative rear side when the child is sitting. Unless otherwise specifically stated below, "both sides" refers to both sides in the width direction, and the middle refers to the position where the central symmetry plane is located.

[0039] An angle adjustment mechanism for adjusting the inclination angle of the backrest is provided between the backrest 120 and the seat 110. The angle adjustment mechanism includes:

[0040] Damping grooves 121 are provided on one of the seat 110 and the backrest 120, and there are multiple damping grooves 121 arranged at intervals along the rotation path of the backrest 120;

[0041] A damping member 130 is movably arranged on the other of the seat 110 and the backrest 120, and has a restricted state of generating a damping force in cooperation with the damping groove 121 to maintain the inclination angle of the backrest, and a release state in which the damping member 130 exits the damping groove 121 after the backrest 120 is stressed.

[0042] An elastic member 123 acts on the damping member 130 to keep it in the restricted state.

[0043] When an adult adjusts the inclination angle of the backrest, an external force is directly applied to the backrest manually to overcome the damping force, so that the backrest rotates relative to the seat. During the rotation process, the damping member switches between the damping grooves under the action of the elastic member. The unlocking member and corresponding components are omitted, which facilitates the assembly and the operation of adjusting the backrest. Generally, the magnitude of the external force required for the backrest 120 to switch to the release state is provided by an adult. Even if the child shakes or impacts and causes the backrest 120 to rotate backward, due to the installation posture of the child safety seat, the backrest 120 will abut against the backrest of the vehicle seat. Therefore, the child safety seat of this application can ensure sufficient safety.

[0044] An ISOFIX standard interface is installed at the bottom of the seat 110 for connecting to the vehicle seat.

[0045] In one embodiment, the rear side of the seat 110 has a connecting portion 111 extending upward. A notch 112 is provided in the middle of the connecting portion 111. The backrest 120 extends into the notch 112 and is rotatably connected to the connecting portion 111. The specific connection method is as follows: The seat 110 includes a hollow housing and two connecting seats 113 disposed inside the housing. The housing includes a first part 114 and a second part 115 that are snap-fitted to each other. The two connecting seats 113 are arranged on both sides of the backrest 120. The backrest 120 has pivot shafts 122 that protrude outwardly and extend from both sides of itself. The two pivot shafts 122 are first inserted into the pivot holes of the two connecting seats 113, then the backrest 120 and the connecting seats 113 are embedded into the first part 114 together, and finally the second part 115 is snap-fitted so that the connecting seats 113 are fixed relative to the housing. The assembled child safety seat can be regarded as the two pivot shafts 122 passing through the housing and the connecting seats 113 for rotational connection.

[0046] Further, the rotation axis of the backrest 120 is disposed close to the bottom of the connecting portion 111, and the angle adjustment mechanism is disposed close to the top of the connecting portion 111. The external force applied to the backrest is above the connecting portion 111. For example, in the figure shown, with the rotation axis as the fulcrum, the damping force F1 is at a distance L1 from the rotation axis, and the applied external force F2 is at a distance L2 from the rotation axis. Referring to the torque formula F2 * L2 = F1 * L1, when F1 and L2 remain unchanged, the larger L1 is, the larger the required F2 is. Therefore, setting the angle adjustment mechanism as far away from the rotation axis as possible (i.e., increasing L1) can prevent the backrest 120 from rotating randomly due to vehicle vibration when the child safety seat is unoccupied.

[0047] In one embodiment, there are two sets of damping grooves 121, which are respectively disposed on both sides of the backrest 120. Correspondingly, there are two sets of damping members 130 and elastic members 123, which are disposed inside the connecting portion 111. In another embodiment, there is one set of damping grooves 121, which is disposed on one side of the backrest 120. Correspondingly, there is one set of damping members 130 and elastic members, which are disposed corresponding to the damping grooves 121. Combining the structure of the foregoing seat 110, the damping members 130 and the elastic members are disposed inside the connecting seats 113. The damping member 130 is a columnar structure slidably mounted inside the connecting seat 113, and the end face extending into the damping groove 121 is an arc surface 131, and the corresponding damping groove 121 is an arc groove. The elastic member is a spring, and both ends act on the connecting seat 113 and the damping member 130 respectively. The setting of the arc surface and the arc groove can play a guiding role when the backrest 120 rotates.

[0048] In one embodiment, the child safety seat 1000 further includes a limiting structure for restricting the rotation range of the backrest 120. The limiting structure includes at least one of the following:

[0049] A) Combining Figure 5 with, the limiting structure includes:

[0050] The limiting groove 124 is provided on one of the backrest 120 and the seat 110 and extends along the rotation path of the backrest 120;

[0051] The limiting block is fixedly provided on the other of the backrest 120 and the seat 110, extends into the limiting groove 124 and can slide in the limiting groove 124. When the backrest 120 rotates to the extreme inclination angle, the limiting block abuts against the end wall of the limiting groove 124.

[0052] B) Combination Figure 8 and Figure 9 , the limiting structure includes:

[0053] The first limiting surface 125 and the second limiting surface 126 are provided on the backrest 120;

[0054] The third limiting surface 116 is provided on the seat 110 and abuts against the first limiting surface 125 and the second limiting surface 126 respectively when the backrest 120 rotates to the extreme inclination angle. In the figure, the third limiting surface 116 is provided on the bottom surface of the notch 112, and the first limiting surface 125 and the second limiting surface 126 are provided on the bottom surface of the backrest 120.

[0055] When the child safety seat of the present application is actually used, it is installed in the same direction as the car seat, and the back side of the backrest will be abutted by the backrest of the car seat. On the premise of ensuring safety, the backrest is softly locked by the damping force, eliminating the unlocking part and the corresponding linkage structure, which facilitates operation and assembly.

[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification. When the technical features in different embodiments are shown in the same drawing, it can be regarded that the drawing also discloses the combination examples of the various embodiments involved at the same time.

[0057] The above embodiments only express several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A child safety seat with an adjustable backrest, comprising a seat for supporting the child's buttocks and a backrest for supporting the child's back, wherein the backrest and the seat are rotatably matched, and characterized in that: An angle adjustment mechanism for adjusting the inclination angle of the backrest is provided between the backrest and the seat, and the angle adjustment mechanism comprises: A damping groove is provided in one of the seat and the backrest, and the damping grooves are multiple and arranged at intervals along the rotation path of the backrest; a damping member, movably disposed on the other of the seat and the backrest, and having a restricted state in which the damping member cooperates with the damping groove to maintain the inclination angle of the backrest, and a released state in which the damping member exits the damping groove after the backrest is subjected to force; The elastic member acts on the damping member to keep it in a restricted state.

2. The child safety seat with adjustable backrest according to claim 1, characterized in that: The rear side of the seat is provided with a connecting portion extending upwards, a notch is arranged in the middle of the connecting portion, the backrest extends into the notch and is rotatably connected to the connecting portion.

3. The child safety seat with adjustable backrest according to claim 2, characterized in that: The rotation axis of the backrest is arranged close to the bottom of the connecting part, and the angle adjustment mechanism is arranged close to the top of the connecting part.

4. The child safety seat with adjustable backrest according to claim 3, characterized in that: The damping grooves are in two groups and are respectively arranged on both sides of the backrest; The damping member and the elastic member are in two groups and are arranged at the connecting portion.

5. The child safety seat with adjustable backrest according to claim 1, characterized in that: The damping member is slidably arranged on the seat.

6. The child safety seat with adjustable backrest according to claim 5, characterized in that: The sliding direction of the damping member is perpendicular to the rotation plane of the backrest.

7. The child safety seat with adjustable backrest according to claim 5, characterized in that: The end surface of the damping member extending into the damping groove is an arc surface, and the damping groove is an arc groove matching the arc surface.

8. The child safety seat with an adjustable backrest according to claim 1, characterized in that: A limiting structure is included for limiting the rotation range of the backrest.

9. The child safety seat with an adjustable backrest according to claim 1, characterized in that: The seat includes a hollow shell and two connecting seats in the shell. The shell includes a first part and a second part that are interlocked. The two connecting seats are arranged on both sides of the backrest. The backrest has a pivot that protrudes and extends outward on both sides of itself. The two pivots pass through the shell and are rotatably connected to the two connecting seats respectively.

10. The child safety seat with adjustable backrest according to claim 9, characterized in that: The damping members are in two groups and are arranged on the connecting seat.

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