A child seat

Abstract

The present invention discloses a child seat, which includes a fixing seat for assembling with a vehicle frame, a seat cushion frame rotatably connected to the fixing seat, and a backrest frame rotatably connected to the fixing seat. When the seat cushion frame is in the open state, the limiting structure of the fixing seat limits the seat cushion frame downward, preventing the seat cushion frame from continuing to flip downward and only allowing it to flip upward. A locking mechanism is provided between the backrest frame and the fixing seat to lock and position the two. An unlocking structure for unlocking the locking of the above locking mechanism is provided on the seat cushion frame; the structure of the present invention is simple and the operation is convenient. When the child seat needs to be folded, the seat cushion frame is flipped upward, and the locking between the backrest frame and the fixing seat can be automatically released.

Description

Technical Field

[0001] The present invention relates to the field of children's utensils, and particularly to a children's seat. Background Art

[0002] There are a variety of existing children's seats. However, for the convenience of storage, children's seats all have an open state and a folded and retracted state. Generally, a children's seat includes a fixed seat fixedly installed on a frame, a seat cushion frame rotatable relative to the fixed seat, and a backrest frame. When the seat cushion frame of an existing children's seat is in the open state, downward limitation of the seat cushion frame is achieved through the limiting structure of the fixed seat, preventing the seat cushion frame from further flipping downward and only allowing upward flipping. And a locking mechanism is often provided between the backrest frame and the fixed seat. When the children's seat needs to be folded, the locking of the locking mechanism needs to be manually released to achieve the folding and retraction of the seat cushion frame and the backrest frame, and the operation is relatively inconvenient. Summary of the Invention

[0003] The object of the present invention is to provide a children's seat, when the seat cushion frame flips upward, the locking between the backrest frame and the fixed seat can be automatically released, with a simple structure and convenient operation.

[0004] The technical solution of the present invention is: a children's seat, including a fixed seat for assembling with a frame, a seat cushion frame rotatably connected to the fixed seat, and a backrest frame rotatably connected to the fixed seat. When the seat cushion frame is in the open state, the limiting structure of the fixed seat realizes downward limitation of the seat cushion frame, preventing the seat cushion frame from further flipping downward and only allowing upward flipping. A locking mechanism for locking and positioning the two is provided between the backrest frame and the fixed seat, and an unlocking structure for unlocking the locking of the locking mechanism is provided on the seat cushion frame; when the seat cushion frame flips upward from the open state, the unlocking structure of the seat cushion frame automatically releases the locking of the locking mechanism, and at this time, the backrest frame can be folded and retracted relative to the seat cushion frame.

[0005] Further, the locking mechanism includes a gear provided on the fixed seat and axially movable relative to it, a first spring installed between the gear and the fixed seat and axially telescopic, and a backrest locking mechanism provided in the backrest frame and capable of locking the gear; the unlocking structure of the seat cushion frame is a guiding inclined surface formed on the inner hole wall of the seat cushion connecting ring and capable of driving the gear to axially move.

[0006] When the children's seat is in the unfolded and in-use state, the gear is in a position corresponding to the backrest locking mechanism under the elastic force of the first spring and is locked by the backrest locking mechanism.

[0007] When the children's seat needs to be folded and retracted, flip the seat cushion frame upward, and the inclined block of the seat cushion frame drives the gear to axially move, avoiding the backrest locking mechanism to achieve automatic unlocking. At this time, the backrest frame can be folded and retracted relative to the seat cushion frame.

[0008] Further, a backrest connection ring rotatably sleeved with the fixed seat is provided at the bottom of the backrest frame, a seat cushion connection ring rotatably sleeved with the fixed seat is provided at the rear of the seat cushion frame, and an inner hole of the backrest connection ring is a wheel groove for accommodating the above-mentioned gear and rotatable relative to the gear.

[0009] Further, an axially movable linkage is provided between the gear and the seat cushion connection ring, and an inclined lug mating with the inclined surface of the inclined block is formed by extending on the linkage. When the seat cushion frame is turned up, the inclined block mates with the inclined surface of the inclined lug to drive the linkage to axially move and push the gear.

[0010] Further, a plurality of gear teeth for clamping by the backrest locking mechanism are provided on the outer periphery of the gear; the backrest locking mechanism realizes multi-angle adjustment of the backrest frame by locking different gear teeth of the gear.

[0011] Further, the backrest locking mechanism includes a lock block provided at the inner lower part of the backrest rod of the backrest frame and capable of extending into the wheel groove to lock the gear, a second spring provided between the lock block and the backrest frame, an unlocking operation member provided at the upper part of the backrest frame, and a traction lock connected between the unlocking operation member and the lock block;

[0012] When the backrest frame is in the locked use state, the lock block clamps the corresponding gear teeth of the gear under the elastic force of the second spring to realize backrest angle positioning;

[0013] When the backrest angle needs to be adjusted, operate the unlocking operation member. The unlocking operation member pulls up the traction lock and drives the lock block to withdraw from the gear against the elastic force of the second spring to realize unlocking; at this time, only need to turn the backrest frame to the required angle and release the unlocking operation member to make the lock block reset and lock the corresponding gear teeth again to realize new backrest angle positioning.

[0014] Further, the fixed seat includes an inner seat body and an outer seat body fixedly connected, a socket part is formed between the inner seat body and the outer seat body, the seat cushion connection ring and the backrest connection ring are sequentially sleeved outside the socket part from inside to outside, and a cross bar is connected between the two inner seat bodies; the gear and the linkage are also sleeved outside the socket part and located inside the backrest connection ring.

[0015] Further, an insertion port mating with the insertion socket of the vehicle frame is provided on the outer side wall of the outer seat body, and an installation locking mechanism for locking the insertion socket is provided inside the outer seat body.

[0016] Further, a limiting block extending into the inner hole of the seat cushion connection ring is provided at the lower part of the inner seat body, and a limiting boss corresponding to the limiting block is provided on the inner wall of the seat cushion connection ring; when the seat cushion frame is in the open state, the limiting boss abuts against the front side of the limiting block to prevent the seat cushion frame from continuing to turn downwards and only allowing it to turn upwards.

[0017] The advantages of the present invention are:

[0018] 1. When the present invention needs to be folded and retracted, the seat cushion frame is turned upwards, and the guiding inclined surface of the seat cushion frame drives the gear to move axially, avoiding the backrest locking mechanism to achieve automatic unlocking. At this time, the backrest frame can be folded and retracted relative to the seat cushion frame; the overall structure is simple and the operation is convenient.

[0019] 2. When the present invention needs to adjust the backrest angle, the backrest locking mechanism's locking of the gear is released by the unlocking operating member. At this time, only the backrest frame needs to be rotated to the desired angle, and then the unlocking operating member is released to make the backrest locking mechanism reset and lock the corresponding gear position teeth again to achieve a new backrest angle positioning. The adjustment operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. The drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention in the use state;

[0022] Figure 2 、 Figure 3 、 Figure 4 It is a schematic assembly structure diagram of the seat cushion frame, backrest frame and fixed seat in the present invention;

[0023] Figure 5 It is a schematic structural diagram of the present invention in the folded state.

[0024] Wherein: 1 fixed seat; 1-1 inner seat body; 1-1-1 limit block; 1-2 outer seat body; 1-2-1 insertion interface; 1-3 socket part;

[0025] 2 seat cushion frame; 2-1 seat cushion connection ring; 2-1-1 guiding inclined surface; 2-1-2 limit boss;

[0026] 3 backrest frame; 3-1 backrest connection ring; 3-1-1 wheel groove;

[0027] 4 gear; 4-1 gear position teeth;

[0028] 5 first spring;

[0029] 6 backrest locking mechanism; 6-1 lock block; 6-2 second spring; 6-3 unlocking operating member; 6-4 traction lock;

[0030] 7 linkage member; 7-1 inclined convex block;

[0031] 8 cross bar. DETAILED DESCRIPTION OF THE INVENTION

[0032] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the present invention and are not intended to limit the scope of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to specific conditions, and the implementation conditions not specified are usually those in conventional experiments.

[0033] As Figures 1 to 5 shown, a children's seat includes a fixed seat 1 for assembling with a vehicle frame, a seat cushion frame 2 rotatably connected to the fixed seat 1, and a backrest frame 3 rotatably connected to the fixed seat 1. When the seat cushion frame 2 is in the open state, the limiting structure of the fixed seat 1 limits the seat cushion frame 2 downward, preventing the seat cushion frame 2 from continuing to flip downward and only allowing it to flip upward. A locking mechanism is provided between the backrest frame 3 and the fixed seat 1 to lock and position the two, and an unlocking structure for releasing the locking of the locking mechanism is provided on the seat cushion frame 2; when the seat cushion frame 2 flips upward from the open state, the unlocking structure of the seat cushion frame 2 automatically releases the locking of the locking mechanism, and at this time the backrest frame 3 can be folded and retracted relative to the seat cushion frame 2.

[0034] In this embodiment, the specific structure of the locking mechanism is as follows: the locking mechanism includes a gear 4 provided on the fixed seat 1 and axially movable relative to it, a first spring 5 installed between the gear 4 and the fixed seat 1 and axially telescopic, and a backrest locking mechanism 6 provided in the backrest frame 3 and capable of locking the gear 4.

[0035] In this embodiment, the unlocking structure of the seat cushion frame 2 is a guiding inclined surface 2-1-1 formed on the inner hole wall of the seat cushion connection ring 2-1 and capable of driving the gear 4 to axially move.

[0036] In this embodiment, the specific rotational mounting manner between the backrest frame 3, the seat cushion frame 2 and the fixed seat 1 is as follows: the bottom of the backrest frame 3 has a backrest connection ring 3-1 rotatably sleeved on the fixed seat 1, and the rear part of the seat cushion frame 2 has a seat cushion connection ring 2-1 rotatably sleeved on the fixed seat 1.

[0037] To facilitate the installation of the gear 4 and its locking by the backrest locking mechanism, the inner hole of the backrest connection ring 3-1 is a wheel groove 3-1-1 for accommodating the gear 4 and rotatable relative to the gear 4.

[0038] In this embodiment, a linkage member 7 capable of axially moving is provided between the gear 4 and the seat cushion connection ring 2-1. An inclined convex block 7-1 mating with the inclined surface of the inclined block 2-1-1 is formed on the linkage member 7. When the seat cushion frame 2 flips upward, the inclined block 2-1-1 cooperates with the inclined surface of the inclined convex block 7-1 to drive the linkage member 7 to axially move and push the gear 4.

[0039] To facilitate the adjustment of the front - rear angle of the backrest frame during use, a plurality of gear teeth 4 - 1 for the backrest locking mechanism 6 to clamp are provided on the outer periphery of the gear 4; the backrest locking mechanism 6 realizes the adjustment of multiple angles of the backrest frame by locking different gear teeth 4 - 1 of the gear 4.

[0040] In this embodiment, the specific structure of the backrest locking mechanism 6 is as follows: the backrest locking mechanism 6 includes a lock block 6 - 1 arranged at the lower inner side of the backrest rod of the backrest frame 3 and capable of extending into the wheel groove 3 - 1 - 1 to lock the gear 4, a second spring 6 - 2 arranged between the lock block 6 - 1 and the backrest frame 3, an unlocking operation member 6 - 3 arranged at the upper part of the backrest frame 3, and a traction lock 6 - 4 connected between the unlocking operation member 6 - 3 and the lock block 6 - 1.

[0041] In this embodiment, the specific structure of the fixed seat 1 is as follows: the fixed seat 1 includes an inner seat body 1 - 1 and an outer seat body 1 - 2 which are fixedly connected. A socket part 1 - 3 is formed between the inner seat body 1 - 1 and the outer seat body 1 - 2. The seat cushion connecting ring 2 - 1 and the backrest connecting ring 3 - 1 are sleeved outside the socket part 1 - 3 in sequence from inside to outside. A cross bar 8 is connected between the two inner seat bodies 1 - 1; the gear 4 and the linkage 7 are also sleeved outside the socket part 1 - 3 and located inside the backrest connecting ring 3 - 1.

[0042] To facilitate the assembly with the vehicle frame, the outer side wall of the outer seat body 1 - 2 has an insertion opening 1 - 2 - 1 for cooperating with the insertion socket of the vehicle frame, and an installation locking mechanism for locking the insertion socket is provided inside the outer seat body 1 - 2.

[0043] In this embodiment, the specific limiting structure between the fixed seat 1 and the seat cushion frame 2 is as follows: the lower part of the inner seat body 1 - 1 has a limiting block 1 - 1 - 1 extending into the inner hole of the seat cushion connecting ring 2 - 1, and the inner wall of the seat cushion connecting ring 2 - 1 has a limiting boss 2 - 1 - 2 corresponding to the limiting block 1 - 1 - 1; when the seat cushion frame 2 is in the open state, the limiting boss 2 - 1 - 2 abuts against the front side of the limiting block 1 - 1 - 1, preventing the seat cushion frame 2 from further flipping downwards and only allowing it to flip upwards.

[0044] The folding principle of the present invention is:

[0045] When the child seat is in the unfolded and in - use state, the gear 4 is located at the position corresponding to the backrest locking mechanism 6 in the wheel groove 3 - 1 - 1 under the elastic force of the first spring 5 and is locked by the backrest locking mechanism 6.

[0046] When the child seat needs to be folded and retracted, the seat cushion frame 2 is flipped upwards. The guiding inclined surface 2 - 1 - 1 of the seat cushion frame 2 drives the gear 4 to axially move, avoiding the backrest locking mechanism 6 and realizing automatic unlocking. At this time, the backrest frame 3 can be folded and retracted relative to the seat cushion frame 2.

[0047] The principle of the backrest frame angle adjustment of the present invention is as follows:

[0048] When the backrest frame 3 is in the locked and in-use state, the lock block 6-1 is clamped to the corresponding gear position tooth 4-1 of the gear 4 under the elastic force of the second spring 6-2, realizing the backrest angle positioning;

[0049] When it is necessary to adjust the backrest angle, operate the unlocking operating member. The unlocking operating member pulls up the traction lock and drives the lock block 6-1 to withdraw from the gear 4 against the elastic force of the second spring 6-2 to realize unlocking; at this time, only need to rotate the backrest frame 3 to the required angle, and release the unlocking operating member 6-3 to reset the lock block 6-1 and lock the corresponding gear 4 position tooth 4-1 again, realizing the new backrest angle positioning.

[0050] The structure of the present invention is simple and the operation is convenient. When the child seat needs to be folded, turn up the seat cushion frame, and the locking between the backrest frame and the fixed seat can be automatically released; when the child seat needs to adjust the backrest angle, the locking between the backrest frame and the fixed seat can be released by operating the unlocking operating member, realizing the backrest angle adjustment.

[0051] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. In addition to the above embodiments, the present invention may also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A child seat, comprising a fixed seat (1) for assembling with a vehicle frame, a seat cushion frame (2) rotatably connected to the fixed seat (1), and a backrest frame (3) rotatably connected to the fixed seat (1). When the seat cushion frame (2) is in an open state, a limiting structure of the fixed seat (1) limits the seat cushion frame (2) downward, preventing the seat cushion frame (2) from further flipping downward and only allowing it to flip upward. It is characterized in that: A locking mechanism capable of locking and positioning the backrest frame (3) and the fixed seat (1) is provided therebetween, and an unlocking structure capable of releasing the locking of the locking mechanism is provided on the seat cushion frame (2); when the seat cushion frame (2) is turned upward from the open state, the unlocking structure of the seat cushion frame (2) automatically releases the locking of the locking mechanism, and at this time, the backrest frame (3) can be folded and retracted relative to the seat cushion frame (2). The locking mechanism includes a gear (4) provided on the fixed seat (1) and axially movable relative thereto, a first spring (5) installed between the gear (4) and the fixed seat (1) and axially telescopic, and a backrest locking mechanism (6) provided in the backrest frame (3) and capable of locking the gear (4); the unlocking structure of the seat cushion frame (2) is a guiding inclined surface (2-1-1) formed on the inner hole wall of the seat cushion connecting ring (2-1) and capable of driving the gear (4) to axially move. When the child seat is in the unfolded and in-use state, the gear (4) is in a position corresponding to the backrest locking mechanism (6) under the elastic force of the first spring (5) and is locked by the backrest locking mechanism (6). When the child seat needs to be folded and retracted, the seat cushion frame (2) is turned upward, and the guiding inclined surface (2-1-1) of the seat cushion frame (2) drives the gear (4) to axially move, avoiding the backrest locking mechanism (6) to achieve automatic unlocking. At this time, the backrest frame (3) can be folded and retracted relative to the seat cushion frame (2). The bottom of the backrest frame (3) has a backrest connecting ring (3-1) rotatably sleeved with the fixed seat (1), the rear part of the seat cushion frame (2) has a seat cushion connecting ring (2-1) rotatably sleeved with the fixed seat (1), and the inner hole of the backrest connecting ring (3-1) is a wheel groove (3-1-1) for accommodating the gear (4) and rotatable relative to the gear (4). An axially movable linkage member (7) is provided between the gear (4) and the seat cushion connecting ring (2-1), and an inclined convex block (7-1) mating with the inclined surface of the guiding inclined surface (2-1-1) is formed on the linkage member (7). When the seat cushion frame (2) is turned upward, the guiding inclined surface (2-1-1) cooperates with the inclined surface of the inclined convex block (7-1) to drive the linkage member (7) to axially move and push the gear (4). A plurality of gear teeth (4-1) for the backrest locking mechanism (6) to clamp are provided on the outer periphery of the gear (4); the backrest locking mechanism (6) realizes multiple-angle adjustment of the backrest frame by locking different gear teeth (4-1) of the gear (4).

2. The children's seat according to claim 1, wherein: The backrest locking mechanism (6) includes a lock block (6-1) provided at the inner lower part of the backrest rod of the backrest frame (3) and capable of extending into the wheel groove (3-1-1) to lock the gear (4), a second spring (6-2) provided between the lock block (6-1) and the backrest frame (3), an unlocking operation member (6-3) provided at the upper part of the backrest frame (3), and a traction lock (6-4) connected between the unlocking operation member (6-3) and the lock block (6-1). When the backrest frame (3) is in the locked and in-use state, the lock block (6-1) clamps the corresponding gear tooth (4-1) of the gear (4) under the elastic force of the second spring (6-2) to realize backrest angle positioning. When it is necessary to adjust the backrest angle, operate the unlocking operating member (6-3). The unlocking operating member (6-3) pulls up the traction lock (6-4), and drives the lock block (6-1) to overcome the elastic force of the second spring (6-2) and withdraw from the gear (4) to achieve unlocking. At this time, only need to rotate the backrest frame (3) to the required angle, and release the unlocking operating member (6-3) to reset the lock block (6-1), and lock the corresponding gear (4) gear teeth (4-1) again to achieve the positioning of the new backrest angle.

3. A children's seat according to claim 1, characterized in that: The fixed seat (1) includes an inner seat body (1-1) and an outer seat body (1-2) which are fixedly connected. A socket part (1-3) is formed between the inner seat body (1-1) and the outer seat body (1-2). The seat cushion connecting ring (2-1) and the backrest connecting ring (3-1) are sleeved outside the socket part (1-3) in sequence from inside to outside. A cross bar (8) is connected between the two inner seat bodies (1-1). The gear (4) and the linkage member (7) are also sleeved outside the socket part (1-3) and located inside the backrest connecting ring (3-1).

4. A child seat according to claim 3, characterized in that: The outer side wall of the outer seat body (1-2) has an insertion opening (1-2-1) that cooperates with the insertion socket of the vehicle frame, and the outer seat body (1-2) has an installation locking mechanism for locking the insertion socket.

5. A child seat according to claim 3, characterized in that: The lower part of the inner seat body (1-1) has a limit block (1-1-1) extending into the inner hole of the seat cushion connecting ring (2-1). The inner wall of the seat cushion connecting ring (2-1) has a limit boss (2-1-2) corresponding to the limit block (1-1-1). When the seat cushion frame (2) is in the open state, the limit boss (2-1-2) abuts against the front side of the limit block (1-1-1), preventing the seat cushion frame (2) from continuing to turn downwards and only allowing it to turn upwards.

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