A child seat backrest structure

Abstract

This application discloses a child seat backrest-tracking structure, relating to the field of child seats. It includes a base, a support seat, a rotating assembly, and an adjustment assembly. A self-locking gas spring drives a push block to move, which in turn drives a rotating block to rotate, thereby rotating the support seat and causing the seat back to rotate to a position close to the user's waist, achieving an automatic backrest-tracking effect. The self-locking gas spring's output end can be locked to fix the seat back position, allowing for stable support during backrest movement. Pressing two push blocks moves two locking plates. Through the engagement of a toothed plate and gears, the locking plates on both sides move synchronously. After the locking plates separate from the L-shaped plug, the mounting plate can move the L-shaped plug, allowing for height adjustment of the mounting plate. This facilitates adjusting the backrest height according to the user's body shape, providing good lumbar support.

Description

Technical Field

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

[0002] With the development of the times and the progress of technology, more and more people are beginning to pay attention to the posture adjustment of teenagers and children during the learning process. Traditional chairs, with their fixed structure, cannot provide good back support for children who are growing and developing rapidly. This has led to the development of backrest chairs to solve this problem.

[0003] The child backrest-tracking seat achieves the backrest-tracking effect through an adjustable backrest. The backrest is unlocked by opening the latch between the backrest and the support components, and then the position of the backrest relative to the seat is adjusted by pushing the backrest, thus achieving the backrest-tracking effect.

[0004] While existing child backrest seats can adjust the horizontal position of the backrest relative to the seat surface to achieve backrest tracking, their backrest height cannot be well adjusted. Even when backrest tracking is achieved, they cannot provide adequate lumbar support for children of different heights, making them inconvenient to use. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a child seat backrest structure.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a child seat backrest structure, including a base, a support seat provided on one side of the base, a rotating component provided between the base and the support seat, and an adjusting component provided on the top of the support seat;

[0007] The rotating assembly includes two fixed blocks fixedly installed inside the base. Two rotating blocks are movably connected between the two fixed blocks via a pin. The end of each rotating block away from the base is fixedly connected to a support. A pushing block is fixedly connected between the two rotating blocks. A self-locking gas spring is hinged inside the base. The output end of the self-locking gas spring is hinged to the outer surface of the pushing block.

[0008] The adjustment assembly includes a mounting block hinged to the top of a support base. A mounting plate is provided on the side of the mounting block away from the support base. An L-shaped plug block is mounted on the side of the mounting plate near the mounting block. A gear is movably connected inside the mounting block. Two toothed plates are meshed on the outer surface of the gear. A locking plate is fixedly connected to the end of the toothed plate away from the gear. A compression spring is fixedly connected to the outer surface of the locking plate.

[0009] As a preferred embodiment of the child seat backrest structure of this utility model, a limiting plate is movably connected between the two fixing blocks, the outer surface of the limiting plate is provided with a groove, the side of the limiting plate away from the fixing rod is movably connected to the outer surface of the support seat, and the inside of the support seat is provided with a limiting groove that cooperates with the limiting plate.

[0010] As a preferred embodiment of the child seat backrest structure of this utility model, two wing plates are fixedly connected to one end of the base near the support seat. The support seat is L-shaped, and the short arm of the support seat is inserted between the two wing plates.

[0011] As a preferred embodiment of the child seat backrest structure of this utility model, the L-shaped plug block has a rectangular notch inside, and the inner wall of the rectangular notch and the outer surface of the locking plate are provided with mutually cooperating tooth grooves. A pressing block is fixedly connected to the side of the locking plate away from the mounting plate.

[0012] As a preferred embodiment of the child seat backrest structure of this utility model, the L-shaped plug block has grooves on both sides, the mounting block has a hole inside that matches the L-shaped plug block, and the inner wall of the hole has a limiting protrusion that matches the groove.

[0013] As a preferred embodiment of the child seat backrest structure of this utility model, an L-shaped limiting rod is fixedly installed on the top of the mounting plate, and the long arm of the L-shaped limiting rod is inserted into the top of the mounting block.

[0014] This utility model provides a child seat backrest structure. It has the following beneficial effects:

[0015] 1. The self-locking gas spring drives the push block to move, which in turn drives the rotating block to rotate, thereby driving the support seat to rotate. This causes the chair back to rotate to a position close to the user's waist, achieving an automatic backrest tracking effect. Furthermore, the self-locking gas spring can lock the output end of the self-locking gas spring, thus fixing the position of the chair back and providing stable support for backrest movement.

[0016] 2. By pressing the two pressing blocks, the two locking plates are moved. Through the cooperation of the toothed plate and gear, the locking plates on both sides move synchronously. After the locking plates are separated from the L-shaped plug blocks, the mounting plate can move the L-shaped plug blocks, thereby adjusting the height of the mounting plate. This allows for easy adjustment of the backrest height according to the user's body shape, providing good support for the user's waist. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is an exploded structural diagram of the rotating component of this utility model.

[0020] Figure 3 This is an exploded structural diagram of the adjustment component of this utility model.

[0021] Figure 4 This is an exploded structural diagram of the locking plate of this utility model.

[0022] In the diagram, 1 is the base; 2 is the support base; 3 is the rotating assembly; 301 is the self-locking gas spring; 302 is the fixing block; 303 is the pushing block; 304 is the rotating block; 305 is the limiting plate; 306 is the wing plate; 4 is the adjusting assembly; 401 is the L-shaped limiting rod; 402 is the mounting plate; 403 is the L-shaped plug-in block; 404 is the pressing block; 405 is the mounting block; 406 is the toothed plate; 407 is the locking plate; 408 is the compression spring; and 409 is the gear. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0024] Reference Figure 1 and Figure 2 This is the first embodiment of the present utility model. This embodiment provides a child seat backrest structure, including a base 1, a support seat 2 provided on one side of the base 1, a rotating component 3 provided between the base 1 and the support seat 2, and an adjusting component 4 provided on the top of the support seat 2.

[0025] The rotating assembly 3 includes two fixed blocks 302 fixedly installed inside the base 1. Two rotating blocks 304 are movably connected between the two fixed blocks 302 by a pin. The end of the rotating block 304 away from the base 1 is fixedly connected to the support 2. A push block 303 is fixedly connected between the two rotating blocks 304. A self-locking gas spring 301 is hinged inside the base 1. The output end of the self-locking gas spring 301 is hinged to the outer surface of the push block 303.

[0026] Specifically, a limiting plate 305 is movably connected between the two fixed blocks 302. The outer surface of the limiting plate 305 is provided with a groove. The side of the limiting plate 305 away from the fixed rod is movably connected to the outer surface of the support base 2. The support base 2 has a limiting groove that matches the limiting plate 305. The limiting rod is movably connected between the two fixed blocks 302 through a rotating shaft. The limiting plate 305 is inserted into the limiting groove inside the support base 2. After the support base 2 rotates to a certain limit, the groove on the outer surface of the limiting plate 305 abuts against the pin movably connected inside the rotating block 304, thereby limiting the maximum rotation angle of the support base 2.

[0027] Specifically, two wing plates 306 are fixedly connected to one end of the base 1 near the support 2. The support 2 is L-shaped, and the short arm of the support 2 is inserted between the two wing plates 306. Through the cooperation between the wing plates 306 and the support 2, the stable rotation of the support 2 is ensured, and the wobbling caused by the rotation of the support 2 is avoided.

[0028] Furthermore, the self-locking gas spring 301 drives the push block 303 to move, which in turn drives the rotating block 304 to rotate, thereby rotating the support base 2. This, in turn, rotates the chair back mounted on the outer surface of the mounting plate 402 to a position close to the user's waist, achieving an automatic backrest tracking effect. The self-locking gas spring 301 also locks the output end, fixing the chair back position and preventing backrest movement caused by the user leaning against it. The main difference between the self-locking gas spring 301 and a regular gas spring is the addition of a valve controller connected to the output end via an air pipe. The valve controller closes the valve inside the gas spring, locking the output end. The outer surface of the base 1 has a rectangular slot for connecting the air pipe to the valve controller. The connection relationship, working principle, and operating sequence of the self-locking gas spring 301 with other components are existing technology and common knowledge familiar to those skilled in the art, and will not be elaborated further here. Example

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The adjusting component 4 includes a mounting block 405 hinged to the top of the support base 2. A mounting plate 402 is provided on the side of the mounting block 405 away from the support base 2. An L-shaped plug-in block 403 is provided on the side of the mounting plate 402 close to the mounting block 405. A gear 409 is movably connected inside the mounting block 405. Two toothed plates 406 are meshed on the outer surface of the gear 409. A locking plate 407 is fixedly connected to the end of the toothed plate 406 away from the gear 409. A compression spring 408 is fixedly connected to the outer surface of the locking plate 407.

[0030] Specifically, the L-shaped plug block 403 has a rectangular notch inside. The inner wall of the rectangular notch and the outer surface of the locking plate 407 are provided with mutually cooperating tooth grooves. A pressing block 404 is fixedly connected to the side of the locking plate 407 away from the mounting plate 402. Through the cooperation between the tooth groove inside the rectangular notch and the locking plate 407, the L-shaped plug block 403 is locked by the pressing of the locking plate 407.

[0031] Specifically, the L-shaped plug block 403 has grooves on both sides, and the mounting block 405 has a socket that matches the L-shaped plug block 403. The inner wall of the socket has a limiting protrusion that matches the groove. The movement of the L-shaped plug block 403 is limited by the cooperation between the groove and the limiting protrusion.

[0032] Specifically, an L-shaped limiting rod 401 is fixedly connected to the top of the mounting plate 402. The long arm of the L-shaped limiting rod 401 is inserted into the top of the mounting block 405. Through the setting of the L-shaped limiting rod 401, the maximum lifting and lowering adjustment of the mounting plate 402 can be achieved.

[0033] Furthermore, by pressing the two pressing blocks 404, the two locking plates 407 are moved. Through the engagement of the toothed plate 406 and the gear 409, the locking plates 407 on both sides move synchronously. After the locking plates 407 separate from the L-shaped plug-in blocks 403, the mounting plate 402 can move the L-shaped plug-in blocks 403, thereby adjusting the height of the mounting plate 402. The L-shaped plug-in blocks 403 and the L-shaped limit rod 401 are both detachably installed on the mounting plate 402. This allows for the replacement of L-shaped plug blocks 403 and L-shaped limit rods 401 of different lengths according to the user's required adjustment range. The toothed plate 406 also has a limit protrusion on the side away from the gear 409. The mounting block 405 has a cavity inside for the gear 409 and the toothed plate 406 to cooperate. The inner wall of the cavity has a groove that cooperates with the limit protrusion on the outer surface of the toothed plate 406, thereby realizing the stable movement of the limited toothed plate 406 and preventing the toothed plate 406 from disengaging from the gear 409.

[0034] Working Principle: When using the child seat, the seat is installed on the upper surface of the base 1, and the backrest is installed on the outer surface of the mounting plate 402. While on the seat, the self-locking gas spring 301 moves the pushing block 303, which in turn moves the rotating block 304, causing the support base 2 to rotate. This, in turn, rotates the backrest installed on the outer surface of the mounting plate 402 to a position close to the user's waist, achieving an automatic backrest tracking effect. Furthermore, the self-locking gas spring 301 can be locked at its output end, fixing the backrest position and preventing backrest movement caused by the user leaning against it, providing fixed support for the user's waist. The height of the mounting plate 402 can be adjusted according to the user's height and body type, thus achieving the desired backrest position. The seat back rests against the user's waist. By pressing two pressing blocks 404, two locking plates 407 are moved. Through the cooperation of the toothed plate 406 and the gear 409, the locking plates 407 on both sides move synchronously. After the locking plates 407 separate from the L-shaped plug block 403, the mounting plate 402 can move the L-shaped plug block 403, thereby adjusting the height of the mounting plate 402. After adjusting to the appropriate height, the pressing blocks 404 are released. Under the reset action of the compression spring 408, the toothed plate 406 is moved, thereby resetting the locking plate 407 and locking the toothed groove inside the L-shaped plug block 403, thus adjusting the height of the seat back. Finally, the child seat backrest achieves the backrest adjustment effect and allows for height adjustment.

[0035] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A child seat backrest structure comprising a base (1), one side of the base (1) is provided with a support seat (2), characterized in that: A rotating assembly (3) is provided between the base (1) and the support (2), and an adjusting assembly (4) is provided on the top of the support (2). The rotating assembly (3) includes two fixed blocks (302) fixedly installed inside the base (1). Two rotating blocks (304) are movably connected between the two fixed blocks (302) by a pin. The end of the rotating block (304) away from the base (1) is fixedly connected to the support base (2). A push block (303) is fixedly connected between the two rotating blocks (304). A self-locking gas spring (301) is hinged inside the base (1). The output end of the self-locking gas spring (301) is hinged to the outer surface of the push block (303). The adjusting assembly (4) includes a mounting block (405) hinged to the top of the support base (2). A mounting plate (402) is provided on the side of the mounting block (405) away from the support base (2). An L-shaped plug block (403) is installed on the side of the mounting plate (402) close to the mounting block (405). A gear (409) is movably connected inside the mounting block (405). Two toothed plates (406) are meshed on the outer surface of the gear (409). A locking plate (407) is fixedly connected to the end of the toothed plate (406) away from the gear (409). A compression spring (408) is fixedly connected to the outer surface of the locking plate (407).

2. The child seat backrest structure according to claim 1, characterized in that: A limiting plate (305) is movably connected between the two fixing blocks (302). The outer surface of the limiting plate (305) is provided with a groove. The side of the limiting plate (305) away from the fixing rod is movably connected to the outer surface of the support base (2). The support base (2) has a limiting groove inside that cooperates with the limiting plate (305).

3. The child seat backrest structure according to claim 2, characterized in that: Two wing plates (306) are fixedly connected to one end of the base (1) near the support (2). The support (2) is L-shaped, and the short arm of the support (2) is inserted between the two wing plates (306).

4. The child seat backrest structure according to claim 3, characterized in that: The L-shaped plug block (403) has a rectangular notch inside. The inner wall of the rectangular notch and the outer surface of the locking plate (407) are provided with mutually cooperating tooth grooves. A pressing block (404) is fixedly connected to the side of the locking plate (407) away from the mounting plate (402).

5. A child seat backrest structure according to claim 4, characterized in that: The L-shaped plug block (403) has grooves on both sides, and the mounting block (405) has a socket that matches the L-shaped plug block (403) inside. The inner wall of the socket has a limiting protrusion that matches the groove.

6. The child seat backrest structure according to claim 5, characterized in that: An L-shaped limiting rod (401) is fixedly installed on the top of the mounting plate (402), and the long arm of the L-shaped limiting rod (401) is inserted into the top of the mounting block (405).

Images