A rotation limiting structure for a child seat support leg and its working method

Abstract

The present invention discloses a rotation limiting structure for a child seat support leg and a working method thereof, comprising a support leg body, a connector provided on one side of the upper end of the support leg body, a slide rail provided on one side of the connector, two connecting plates provided at one end of the slide rail, the slide rail being rotatably connected to the connector via the connecting plates, a slide groove provided on one side of the connecting plates, and a limiting card slot provided on the other side of the connecting plates. The present invention cooperates with the slide groove, the limiting notch, and the limiting card slot provided on the connecting plate through the limiting hook plate and the limiting protrusion provided on the connector, and by rotating the support leg body, the limiting hook plate and the limiting protrusion are respectively inserted into the limiting notch and the limiting card slot to limit the rotation of the connector, thereby achieving the purpose of rotationally limiting the support leg body, and avoiding the problem that the existing support leg structure may be unstable during use, thereby affecting the safety of the child seat.

Description

Technical Field

[0001] The present invention relates to the technical field of child seats, and in particular to a rotation limiting structure for a child seat support leg and a working method thereof. Background Art

[0002] A child seat, also known as a child restraint system, is a seat designed for children of different ages (or weights) and installed in a car to effectively improve the safety of children riding in a car. The European regulation ECE R44 / 03 defines a child safety seat as: a child safety protection system that can be fixed to a motor vehicle and consists of a seat belt assembly with buckles or flexible components, adjustment mechanisms, accessories, etc. It can be combined with additional devices such as a portable crib, infant carrier, auxiliary seat or collision protection. In the event of a car collision or sudden deceleration, it can reduce the impact force on the child and restrict the child's body movement to reduce their injuries and ensure their safety in the car. A child seat with a support leg structure is more stable and safer and can effectively protect children.

[0003] Most of the existing child seats with rotatable support leg structures do not have a rotation limit function. The seat support legs and the seat bottom cover usually use a damping rotation connection. The friction damping effect between the two connecting parts is not ideal, which may cause the support leg structure to shake and become unstable during use, affecting the safety of the child seat. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotation limiting structure for a child seat support leg and a working method thereof, so as to solve the problem proposed in the above background technology that most of the existing child seats with rotatable support leg structures do not have a rotation limiting function, which may cause the support leg structure to shake and become unstable during use.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rotation limiting structure for a child seat support leg, comprising a support leg body, a connecting member is provided on one side of the upper end of the support leg body, and a slide rail is provided on one side of the connecting member, two connecting plates are provided at one end of the slide rail, the slide rail is rotatably connected to the connecting member through the connecting plate, a slide groove is provided on one side of the connecting plate, a limiting card groove is provided on the other side of the connecting plate, a limiting notch is provided on one end of the slide groove, limiting hook plates are provided on both sides of the connecting member, and a limiting protrusion is provided on one side of the limiting hook plate of the connecting member.

[0006] Furthermore, the connecting member is provided with a first circular hole above the two limiting hook plates, and the connecting plate is provided with a second circular hole above the sliding groove and the limiting slot, and the first circular hole and the second circular hole are the same size.

[0007] Furthermore, the connecting member is arranged between two connecting plates, the first circular hole opened in the connecting member is aligned with the second circular hole opened in the connecting plate, and pins are inserted into the first circular hole and the second circular hole, and the connecting member is rotatably connected to the connecting plate through the pins.

[0008] Furthermore, a square notch is provided on one side of the limiting protrusion of the connecting member, and chamfers are provided on both sides of the square notch.

[0009] Furthermore, the slide groove is configured as an arc-shaped groove, and the center of the arc-shaped slide groove and the center of the second circular hole are on the same horizontal line.

[0010] Furthermore, an arc-shaped slide is provided on one side of the limiting slot close to the limiting slot opening.

[0011] Furthermore, the ends of the limiting hook plate are bent and inclined outward, and the surface of the limiting hook plate is arc-shaped.

[0012] Furthermore, the width of the limiting hook plate matches the slot width of the sliding slot, and the end of the limiting hook plate matches the slot size of the limiting slot.

[0013] Preferably, the outer surface of the limiting protrusion is arc-shaped.

[0014] A working method for a rotation limiting structure of a child seat support leg, including a rotation limiting method for the support leg in a use state and a rotation limiting method for the support leg in a storage state;

[0015] The rotation limiting method of the support leg in the use state includes the following steps:

[0016] Step (A1), in the initial stage, the side of the connecting member with the square notch abuts against the slide rail to restrict the rotation of the connecting member, thereby limiting the rotation of the supporting leg body;

[0017] In step (B1), during the restriction release phase, the square notch provided in the connector is used to reduce the portion of the connector side that abuts against the slide rail during rotation. When the restriction is released, the support leg body is pulled, which drives the connector to rotate. The connector gradually moves away from the slide rail as it rotates around the pin, causing the side of the connector with the square notch to separate from the slide rail, thereby releasing the restriction and allowing the connector to rotate freely.

[0018] Step (C1), the rotation stage: after the restriction of the connecting member is released, the supporting leg body is continued to rotate, so that the connecting member carrying the limiting hook plate and the limiting protrusion slides into the sliding groove provided in the connecting plate until the limiting protrusion is blocked by the connecting plate;

[0019] Step (D1), the rotation limiting stage, further rotating the support leg body, causing the connecting plate to push the limiting protrusion to deform, until the limiting protrusion is snapped into the limiting slot and then restored. At the same time as the limiting protrusion is snapped into the limiting slot, the end of the limiting hook plate is snapped into the limiting slot to limit the rotation of the connecting member, so that the support leg body is in a use state;

[0020] The rotation limiting method of the support legs in the stowed state comprises the following steps:

[0021] Step (A2), in the initial stage, the end of the limiting hook plate and the limiting protrusion provided on the connecting member are respectively inserted into the limiting notch and the inner portion of the limiting slot provided on the connecting plate to limit the rotation of the connecting member and to limit the rotation of the supporting leg body;

[0022] In step (B2), the restriction release stage, the support leg body is pushed to cause the support leg body to drive the connecting member to rotate, and the connecting member carries the limiting hook plate and the limiting protrusion to move. When the limiting protrusion moves, it is pushed by the connecting plate to cause it to deform until the limiting protrusion slides into the sliding groove and then recovers. The end of the limiting hook plate also slides into the sliding groove, thereby releasing the restriction and allowing the connecting member to rotate freely.

[0023] In step (C2), the rotation phase, after the restriction of the connector is released, the support leg body continues to rotate, so that the connector, carrying the limiting hook plate and the limiting protrusion, slides inside the slide groove, and the connector gradually approaches the slide rail when rotating around the pin shaft, until the side of the connector with the square notch contacts the slide rail;

[0024] In step (D2), the rotation limiting stage, the support leg body is further rotated so that the side of the connecting piece with the square notch abuts against the slide rail to limit the rotation of the connecting piece, causing the support leg body to be in the retracted state.

[0025] Compared with the prior art, the present invention is provided with a connecting piece and a connecting plate, and the limiting hook plate and limiting protrusion provided on the connecting piece cooperate with the slide groove, limiting notch and limiting card slot provided on the connecting plate, and by rotating the support leg body, the limiting hook plate and limiting protrusion are respectively inserted into the limiting notch and limiting card slot to limit the rotation of the connecting piece, thereby achieving the purpose of rotationally limiting the support leg body, avoiding the problem that the existing support leg structure may shake and become unstable during use, affecting the safety of the child seat, and then the support leg body is stored and rotated by abutting the slide rail with the side of the connecting piece to avoid the support leg body from falling out when stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2This is a schematic diagram of the three-dimensional structure of the connecting member connected to the slide rail in the supporting storage state of the present invention;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting member connected to the slide rail in a practical supporting state of the present invention;

[0029] Figure 4 Schematic diagram of the three-dimensional structure of the connecting piece of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the slide rail of the present invention.

[0031] In the figure: 1. Support leg body; 2. Connector; 3. Slide rail; 4. Connecting plate; 5. Slide groove; 6. Limiting slot; 7. Limiting notch; 8. Limiting hook plate; 9. Limiting protrusion; 10. First circular hole; 11. Second circular hole; 12. Pin; 13. Square notch. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-5 The present invention provides a technical solution: a rotation limiting structure for a child seat support leg, comprising a support leg body 1, a connecting member 2 is provided on one side of the upper end of the support leg body 1, and a slide rail 3 is provided on one side of the connecting member 2, two connecting plates 4 are provided at one end of the slide rail 3, the slide rail 3 is rotatably connected to the connecting member 2 through the connecting plate 4, a slide groove 5 is provided on one side of the connecting plate 4, a limiting card groove 6 is provided on the other side of the connecting plate 4, a limiting notch 7 is provided on one end of the connecting plate 4 located at the slide groove 5, limiting hook plates 8 are provided on both sides of the connecting member 2, and a limiting protrusion 9 is provided on one side of the connecting member 2 located at the limiting hook plate 8.

[0034] Specifically, the connecting member 2 is provided with a first circular hole 10 above the two limiting hook plates 8, and the connecting plate 4 is provided with a second circular hole 11 above the slide groove 5 and the limiting slot 6. The first circular hole 10 and the second circular hole 11 are the same size.

[0035] Specifically, the connecting member 2 is arranged between the two connecting plates 4, the first circular hole 10 opened in the connecting member 2 is aligned with the second circular hole 11 opened in the connecting plate 4, and a pin shaft 12 is inserted into the first circular hole 10 and the second circular hole 11, and the connecting member 2 is rotatably connected with the connecting plate 4 through the pin shaft 12.

[0036] Specifically, a square notch 13 is provided on one side of the limiting protrusion 9 of the connecting member 2, and both sides of the square notch 13 are chamfered, so that both sides of the square notch 13 are in arc contact with the slide rail 3 to facilitate the rotation of the connecting member 2.

[0037] Specifically, the slide groove 5 is set to be an arc groove, and the center of the arc of the slide groove 5 is on the same horizontal line as the center of the second circular hole 11, so that when the connecting member 2 rotates with the pin shaft 12 as the rotation axis, the connecting member 2 carrying the limiting hook plate 8 and the limiting protrusion 9 can slide stably inside the slide groove 5.

[0038] Specifically, an arc-shaped slide is provided on one side of the limiting slot 6 close to the limiting notch 7 , so that the limiting protrusion 9 can easily slide into the limiting slot 6 to limit the rotation of the connecting member 2 .

[0039] Specifically, the ends of the limiting hook plate 8 are bent and tilted outward, and the surface of the limiting hook plate 8 is arc-shaped, so that when the supporting leg body 1 is stored, the ends of the limiting hook plate 8 can slide out from the inside of the limiting slot 7.

[0040] Specifically, the width of the limiting hook plate 8 matches the groove width of the slide groove 5, so that the end of the limiting hook plate 8 can slide inside the slide groove 5, and the end of the limiting hook plate 8 matches the groove size of the limiting groove 7, so that the end of the limiting hook plate 8 can be stuck into the limiting groove 7.

[0041] Specifically, the outer surface of the limiting protrusion 9 is arc-shaped.

[0042] A working method for a rotation limiting structure of a child seat support leg, including a rotation limiting method for the support leg in a use state and a rotation limiting method for the support leg in a storage state;

[0043] The rotation limiting method of the support leg in the use state includes the following steps:

[0044] Step (A1), in the initial stage, the side of the connecting member 2 with the square notch 13 abuts against the slide rail 3 to restrict the rotation of the connecting member 2 and to limit the rotation of the support leg body 1;

[0045] In step (B1), during the restriction release phase, the square notch 13 provided in the connector 2 is used to reduce the portion of the side of the connector 2 that abuts against the slide rail 3 during rotation. When the restriction is released, the support leg body 1 is pulled, which drives the connector 2 to rotate. The connector 2 gradually moves away from the slide rail 3 as it rotates around the pin 12, so that the side of the connector 2 with the square notch 13 is separated from the slide rail 3, thereby releasing the restriction and allowing the connector 2 to rotate freely.

[0046] Step (C1), rotation stage: after the restriction of the connecting member 2 is released, the supporting leg body 1 is further rotated, so that the connecting member 2 carrying the limiting hook plate 8 and the limiting protrusion 9 slides into the inner portion of the chute 5 provided on the connecting plate 4 until the limiting protrusion 9 is blocked by the connecting plate 4;

[0047] Step (D1), the rotation limiting stage, further rotating the support leg body 1, causing the connecting plate 4 to push the limiting protrusion 9 to deform, until the limiting protrusion 9 is snapped into the limiting slot 6 and then restored. At the same time as the limiting protrusion 9 is snapped into the limiting slot 6, the end of the limiting hook plate 8 is snapped into the limiting notch 7 to limit the rotation of the connecting member 2, so that the support leg body 1 is in use;

[0048] The rotation limiting method of the support leg in the stowed state includes the following steps:

[0049] Step (A2), in the initial stage, the end of the limiting hook plate 8 and the limiting protrusion 9 provided on the connecting member 2 are respectively inserted into the limiting notch 7 and the limiting slot 6 provided on the connecting plate 4 to limit the rotation of the connecting member 2 and to limit the rotation of the supporting leg body 1;

[0050] In step (B2), the restriction release stage is performed by pushing the support leg body 1, so that the support leg body 1 drives the connecting member 2 to rotate, and the connecting member 2 carries the limiting hook plate 8 and the limiting protrusion 9 to move. When the limiting protrusion 9 moves, it is pushed by the connecting plate 4 to cause it to deform until the limiting protrusion 9 slides into the inner part of the slide groove 5 and then recovers. The end of the limiting hook plate 8 also slides into the inner part of the slide groove 5, thereby releasing the restriction and allowing the connecting member 2 to rotate freely.

[0051] Step (C2), the rotation stage: after the restriction of the connector 2 is released, the support leg body 1 continues to rotate, so that the connector 2, carrying the limiting hook plate 8 and the limiting protrusion 9, slides inside the slide groove 5, and the connector 2 gradually approaches the slide rail 3 when rotating around the pin 12 until the side of the connector 2 with the square notch 13 contacts the slide rail 3;

[0052] In step (D2), the rotation limiting stage, the support leg body 1 is further rotated so that the side of the connecting member 2 with the square notch 13 abuts against the slide rail 3 to limit the rotation of the connecting member 2, causing the support leg body 1 to be in the retracted state.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rotation limiting structure for a child seat support leg, comprising a support leg body (1), characterized in that: A connecting member (2) is provided on one side of the upper end of the supporting leg body (1), and a slide rail (3) is provided on one side of the connecting member (2), two connecting plates (4) are provided on one end of the slide rail (3), and the slide rail (3) is rotatably connected to the connecting member (2) through the connecting plate (4), a slide groove (5) is provided on one side of the connecting plate (4), and a limiting card groove (6) is provided on the other side of the connecting plate (4), and a limiting notch (7) is provided on one end of the connecting plate (4) located at the slide groove (5), and limiting hook plates (8) are provided on both sides of the connecting member (2), and a limiting protrusion (9) is provided on one side of the limiting hook plate (8) of the connecting member (2); The connecting member (2) is provided with a first circular hole (10) above the two limiting hook plates (8), and the connecting plate (4) is provided with a second circular hole (11) above the slide groove (5) and the limiting slot (6), and the first circular hole (10) and the second circular hole (11) are of the same size; the connecting member (2) is arranged between the two connecting plates (4), the first circular hole (10) provided in the connecting member (2) is aligned with the second circular hole (11) provided in the connecting plate (4), and a pin (12) is inserted into the first circular hole (10) and the second circular hole (11), and the connecting member (2) is rotatably connected to the connecting plate (4) through the pin (12); the connecting member (2) is provided with a square notch (13) on one side of the limiting protrusion (9), and both sides of the square notch (13) are provided with chamfers.

2. The rotation limiting structure for a child seat support leg according to claim 1, characterized in that: The chute (5) is configured as an arc-shaped chute, and the center of the arc-shaped chute (5) and the center of the second circular hole (11) are on the same horizontal line.

3. The rotation limiting structure for a child seat support leg according to claim 1, characterized in that: An arc-shaped slide is provided on one side of the limiting slot (6) close to the limiting slot opening (7).

4. The rotation limiting structure for a child seat support leg according to claim 1, characterized in that: The ends of the limiting hook plate (8) are bent and tilted outward, and the surface of the limiting hook plate (8) is arc-shaped.

5. The rotation limiting structure for a child seat support leg according to claim 1, characterized in that: The width of the limiting hook plate (8) matches the slot width of the slide slot (5), and the end of the limiting hook plate (8) matches the slot size of the limiting slot (7).

6. The rotation limiting structure for a child seat support leg according to claim 1, characterized in that: The outer surface of the limiting protrusion (9) is arc-shaped.

7. A method for operating a rotation limiting structure for a child seat support leg according to any one of claims 1 to 6, characterized in that: Including the rotation limiting method of the support legs in the use state and the rotation limiting method of the support legs in the storage state; The rotation limiting method of the support leg in the use state includes the following steps: Step (A1), initial stage, the side of the connecting member (2) with the square notch (13) abuts against the slide rail (3) to limit the rotation of the connecting member (2), and is used to limit the rotation of the supporting leg body (1); In step (B1), the restriction removal stage, the square notch (13) provided on the connecting member (2) is used to reduce the portion of the side of the connecting member (2) that abuts against the slide rail (3) during rotation. When the restriction is removed, the supporting leg body (1) is pulled, and the supporting leg body (1) drives the connecting member (2) to rotate, and the connecting member (2) gradually moves away from the slide rail (3) when rotating with the pin (12) as the rotation axis, so that the side of the connecting member (2) provided with the square notch (13) is separated from the slide rail (3), thereby removing the restriction and allowing the connecting member (2) to rotate freely. Step (C1), the rotation stage, after the restriction of the connecting member (2) is released, the supporting leg body (1) is continued to rotate, so that the connecting member (2) carrying the limiting hook plate (8) and the limiting protrusion (9) slides into the inside of the sliding groove (5) provided on the connecting plate (4) until the limiting protrusion (9) is blocked by the connecting plate (4); Step (D1), the rotation limiting stage, further rotating the support leg body (1), causing the connecting plate (4) to push the limiting protrusion (9) to deform, until the limiting protrusion (9) is snapped into the limiting slot (6) and then restored, while the limiting protrusion (9) is snapped into the limiting slot (6), the end of the limiting hook plate (8) is snapped into the limiting slot (7) to limit the rotation of the connecting member (2), so that the support leg body (1) is in use; The rotation limiting method of the support legs in the stowed state comprises the following steps: Step (A2), initial stage, the end of the limiting hook plate (8) and the limiting protrusion (9) provided on the connecting member (2) are respectively inserted into the limiting notch (7) and the limiting slot (6) provided on the connecting plate (4) to limit the rotation of the connecting member (2) and to limit the rotation of the supporting leg body (1); In step (B2), the restriction release stage, the support leg body (1) is pushed to drive the support leg body (1) to drive the connecting member (2) to rotate, and the connecting member (2) carries the limiting hook plate (8) and the limiting protrusion (9) to move. When the limiting protrusion (9) moves, it is pushed by the connecting plate (4) to cause it to deform until the limiting protrusion (9) slides into the inside of the slide groove (5) and then recovers. The end of the limiting hook plate (8) slides into the inside of the slide groove (5) together to release the restriction so that the connecting member (2) can rotate freely. Step (C2), the rotation stage, after the restriction of the connecting member (2) is released, the supporting leg body (1) is continued to rotate, so that the connecting member (2) carries the limiting hook plate (8) and the limiting protrusion (9) to slide inside the slide groove (5), and the connecting member (2) gradually approaches the slide rail (3) when rotating with the pin shaft (12) as the rotation axis, until the side of the connecting member (2) with the square notch (13) contacts the slide rail (3); In step (D2), the rotation limiting stage, the support leg body (1) is further rotated so that the side of the connecting member (2) with the square notch (13) abuts against the slide rail (3) to limit the rotation of the connecting member (2), causing the support leg body (1) to be in the retracted state.

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