Fast-assembly type telescopic adjustable anti-overturning supporting leg mechanism of child safety seat

Abstract

The utility model provides a child safety seat fast-assembly type telescopic adjusting anti-overturning supporting leg mechanism which comprises a fixed steel plate, a sliding telescopic structure and a supporting leg structure, and the operation of opening and retracting supporting legs is simple and fast. After the supporting legs are unfolded, the fixing steel plates can bear part of acting force, the supporting legs can be effectively prevented from shaking, and stability is better; and after the limiting piece of the sliding telescopic structure is clamped into the limiting groove of the fixed steel plate, the locking effect can be achieved, and misoperation can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the field of child safety seats, in particular to a quick-install, retractable and adjustable anti-turnover support leg mechanism of a child safety seat. Background Art

[0002] Child safety seats are used to protect children's safety when riding in a car. In order to make the child safety seats more firmly fixed and safer, some child safety seats are currently equipped with a support leg for anti-rollover. The existing support leg structure is cumbersome to open and retract, and the support leg is prone to shaking and misoperation. Utility Model Content

[0003] In view of the defects of the existing child safety seat support legs, the technical problem to be solved by the present invention is to provide a child safety seat quick-install retractable and anti-flip support leg mechanism that is simple and quick to open and retract, has good support stability, and is not prone to misoperation.

[0004] To achieve the above-mentioned object, according to one aspect of the present invention, the present invention is implemented through the following technical measures: a quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat, comprising a fixed steel plate, a sliding and retractable structure, and a support leg structure, wherein the fixed steel plate is connected and fixed to the base of the child seat body, and an opening is provided at the lower end of the fixed steel plate and a limiting groove is provided at the upper end;

[0005] The sliding telescopic structure includes a support plate, a limit member, a double torsion spring, and a sliding plate. The support plate is U-shaped, and a through hole and a limit groove are provided at the upper end of the support plate. Hinge hole I and hinge hole II are provided on both sides of the support plate, and hinge columns are provided in hinge hole I and hinge hole II; the sliding plate is provided with a limit groove, and connecting columns are provided at the four corners of the bottom of the sliding plate; a limit foot is provided at one end of the limit member, and a supporting inclined surface is provided at the other end. Hinge holes are provided on both sides of the limit member, and the limit member is sleeved on the hinge column in hinge hole I through the hinge hole, and the upper end of the limit foot passes through the limit groove on the sliding plate and is stuck in the limit groove of the fixed steel plate, and the lower end of the limit foot is provided in the limit groove on the support plate; the double torsion spring is sleeved on the hinge column in hinge hole I, and the middle steel wire of the double torsion spring supports the supporting inclined surface of the limit member;

[0006] The supporting leg structure includes a supporting leg, a flip joint, and a joint cover. The flip joint is provided with a hinge hole and a top block. The flip joint is sleeved on the hinge column in the hinge hole II through the hinge hole. The other end of the flip joint is connected to the supporting leg. Springs are provided on both sides of the flip joint, and the springs are sleeved on the hinge column in the hinge hole II. The joint cover is provided with connecting holes around it. The joint cover is connected and fixed to the sliding plate and the connecting columns at the four corners of the bottom of the sliding plate through the connecting holes. An accommodating cavity is provided at the lower end of the joint cover, and hinge holes are provided on both sides of the accommodating cavity. The joint cover is sleeved on the hinge column in the hinge hole II through the hinge hole. An inclined surface is provided at the bottom of the joint cover for supporting the springs on both sides of the flip joint.

[0007] Furthermore, a guide groove is provided at the upper end of the fixed steel plate, a through groove and a limiting circular hole are provided at the upper end of the supporting plate, a through groove is provided at the upper end of the sliding plate, and a connecting column is provided at the bottom center of the sliding plate. The sliding and telescopic structure also includes a guide plate, and a raised circular limiting column is provided on the guide plate. The circular limiting column passes through the limiting circular hole on the supporting plate and is connected and fixed to the connecting column at the bottom center of the sliding plate. Two limiting blocks are provided at one end of the guide plate, and the limiting block passes through the through grooves on the supporting plate and the sliding plate and slides in the guide groove of the fixed steel plate. A pin hole is provided on the limiting block, and the pin holes of the two limiting blocks are connected to each other through a pin.

[0008] Furthermore, the lower opening of the fixed steel plate is provided with an inward bend.

[0009] Furthermore, one end of the limiting foot is provided with an inclined surface.

[0010] Furthermore, one end of the flip joint is inserted into the cavity of the support leg and fixedly connected to the support leg with bolts.

[0011] Furthermore, the flip joint is provided with a plurality of reinforcing ribs.

[0012] Furthermore, a groove and a notch are provided on the upper end of the joint cover, and the shape of the notch matches the shape of the guide plate.

[0013] Furthermore, a limit pin is provided at the lower end of the limit foot, and compression spring holes are provided on both sides of the joint cover, and a return compression spring is provided in the compression spring hole. One end of the return compression spring is sleeved on the limit pin, and the other end rests on the compression spring hole of the joint cover.

[0014] Compared with the existing technology, the advantages of the present invention are: the quick-install, retractable and adjustable anti-flip support leg mechanism of the child safety seat has the advantages of simple and quick operation of opening and retracting the support legs; after the support legs are opened, the fixed steel plate can bear part of the force, which can effectively prevent the support legs from shaking and has better stability; the limiting part of the sliding retractable structure can realize the locking effect after being stuck in the limiting groove of the fixed steel plate, which can effectively prevent misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structural parts of the sliding telescopic structure and the supporting leg structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the exploded structure of the support leg mechanism of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the support plate, flip joint, and joint cover described in the utility model.

[0020] Explanation of the accompanying drawings: 1. Fixed steel plate; 2. Guide groove; 3. Limiting groove; 4. Support plate; 5. Through hole; 6. Limiting circular hole; 7. Hinge hole I; 8. Hinge hole II; 9. Hinge column; 10. Through groove; 11. Limiting piece; 12. Limiting foot; 13. Support slope; 14. Hinge hole; 15. Double torsion spring; 16. Sliding plate; 17. Guide plate; 18. Circular limiting column; 19. Limiting block; 20. Pin hole; 21. Pin; 22. Support leg; 24. Flip joint; 25. Top block; 26. Spring; 27. Joint cover; 28. Connecting hole; 29. ​​Groove; 30. Notch; 31. Child seat body base; 32. Return compression spring; 33. Limiting pin; 34. Compression spring hole. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0022] In the description of the present utility innovation, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility innovation and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility innovation.

[0023] Please refer to Figures 1-4The embodiment provides a quick-install, retractable, and anti-flip support leg mechanism for a child safety seat, comprising a fixed steel plate 1, a sliding and retractable structure, and a support leg structure. The fixed steel plate 1 is fixedly connected to the child seat body base 31 by bolts. The overall shape of the fixed steel plate 1 is similar to a square tube guide rail, with an opening at the lower end, an inward bend at the opening, and a guide groove 2 and a limit groove 3 at the upper end.

[0024] The sliding telescopic structure includes a support plate 4, a limit member 11, a double torsion spring 15, a sliding plate 16, and a guide plate 17. The support plate 4 is U-shaped, and a through hole 5, a limit groove 3, a through groove 10, and a limit circular hole 6 are provided at the upper end of the support plate 4. Hinge holes I7 and hinge holes II8 are provided on both sides of the support plate 4. Hinge holes I7 and hinge holes II8 are both provided with hinge columns 9; the sliding plate 16 is U-shaped as a whole, and a limit groove 3 and a through groove 10 are provided on the sliding plate 16. Connecting columns are provided at the four corners and the center of the bottom of the sliding plate 16; one end of the limit member 11 is provided with a limit foot 12, and the other end is provided with a supporting inclined surface 13, and hinge holes 14 are provided on both sides of the limit member 11. The limit member 11 is sleeved on the hinge column 9 in the hinge hole I7 through the hinge hole 14, and the upper end of the limit foot 12 passes through the limit groove 3 on the sliding plate 16 and is stuck in the limit groove 3 of the fixed steel plate 1 (for the support leg 22 to be fully opened and retracted The limit when returning), the lower end of the limit foot 12 is arranged in the limit groove 3 on the support plate 4, the upper end of the limit foot 12 is provided with an inclined surface, and the lower end is provided with a limit pin 33; the double torsion spring 15 is sleeved on the hinge column 9 in the hinge hole Ⅰ 7, and the middle steel wire of the double torsion spring 15 supports the support inclined surface 13 of the limit member 11; the guide plate 17 is provided with a raised circular limit column 18, and the circular limit column 18 passes through the limit circular hole 6 on the support plate 4 and is connected and fixed with the connecting column at the bottom center of the sliding plate 16 (preferably screw link), and one end of the guide plate 17 is provided with two limit blocks 19, which pass through the support plate 4 and the through groove 10 on the sliding plate 16 and slide in the guide groove 2 of the fixed steel plate 1, so that the sliding telescopic structure and the support leg structure can only slide in the fixed steel plate 1, and a pin hole 20 is provided on the limit block 19, and the pin holes 20 of the two limit blocks 19 are connected to each other by a pin 21;

[0025] The support leg structure includes a support leg 22, a flip joint 24, and a joint cover 27. The flip joint 24 is provided with a hinge hole 14, a top block 25, and a plurality of reinforcing ribs. The flip joint 24 is sleeved on the hinge column 9 in the hinge hole II8 through the hinge hole 14. The other end of the flip joint 24 is inserted into the support foot cavity and fixedly connected to the support foot with bolts. Springs 26 are provided on both sides of the flip joint 24. The springs 26 are sleeved on the hinge column 9 in the hinge hole II8; the joint cover 27 is provided with connecting holes 28 around it, and the joint cover 27 is fixed to the sliding plate 16 through the connecting holes 28 and the connecting columns at the four corners of the bottom of the sliding plate 16 (preferably screwed). After the sliding plate 16 and the joint cover are connected 27 edges are buckled together, and a groove 29 and a notch 30 are provided at the upper end of the joint cover 27. The shape of the notch 30 is consistent with the shape of the guide plate 17, which facilitates the placement of the guide plate 17 and the hinge column 9 at the hinge hole I7 to achieve a flat effect. A accommodating cavity is provided at the lower end of the joint cover 27, and hinge holes 14 are provided on both sides of the accommodating cavity. The joint cover 27 is sleeved on the hinge column 9 in the hinge hole II8 through the hinge hole 14. A slope is provided at the bottom of the joint cover 27 for supporting the springs 26 on both sides of the flip joint 24. Compression spring holes 34 are also provided on both sides of the joint cover 27. A return compression spring 32 is provided in the compression spring hole 34. One end of the return compression spring 32 is sleeved on the limit pin 33, and the other end rests on the compression spring hole 34 of the joint cover 27.

[0026] The embodiment provides a quick-install, retractable and anti-flip support leg mechanism for a child safety seat. When the support leg 22 needs to be opened, the support leg 22 is opened from the accommodating cavity under the base 31 of the child seat body, and the support foot slides over the inclined surface of the elastic hook to leave the accommodating cavity. At this time, the support leg 22 and the flip joint 24 rotate with the hinge column 9 at the hinge hole II8 as the center of the circle. When it is opened to an angle of about 45 degrees, the top block 25 of the flip joint 24 pushes the support inclined surface 13 of the limit member 11, overcoming the force of the double torsion spring 15, and the support inclined surface 13 moves upward, driving the limit foot 12 at the other end to move downward, and the return compression spring 32 is compressed, and the limit foot 12 leaves the limit groove 3 of the fixed steel plate 1. At this time, the support leg 22 or the joint cover 27 is grasped and pulled outward, driving the entire sliding and telescopic structure to move outward, and the two limit blocks 19 of the guide plate 17 move along the guide groove 2 of the fixed steel plate 1, pulling After the support leg 22 reaches the bottom, it is opened to a 90-degree angle. During the process, the support leg is opened more conveniently and labor-savingly due to the elastic force of the spring 26 at the hinge of the flip joint 24, and it is not easy to retract it by mistake under the action of the elastic force after opening. At this time, since the top block 25 of the flip joint 24 rotates away from the support inclined surface 13, it cannot push the support inclined surface 13 of the limit member 11. Under the action of the double torsion spring 15, the support inclined surface 13 is reset to drive the limit leg 12 of the limit member 11 to move upward. The elastic force of the return compression spring 32 can better help the limit leg 12 to move upward, and the limit leg 12 passes through the two limit grooves 3 on the outside of the fixed steel plate 1 to achieve the limiting effect. Since the fixed steel plate 1 wraps the sliding and telescopic structure and the support leg 22 structure, the sliding and telescopic structure and the support leg structure can only slide within the fixed steel plate 1, and the forces in multiple directions are supported on the fixed steel plate 1, making the supporting effect stable and not easy to shake.

[0027] When the support leg 22 needs to be retracted, the support foot is rotated so that the support foot overcomes the elastic force of the spring 26 and is retracted to an angle of about 45 degrees. The top block 25 of the flip joint 24 pushes the support slope 13 of the limit member 11, overcomes the force of the double torsion spring 15, and the support slope 13 moves upward, driving the limit foot 12 at the other end to move downward. The return compression spring 32 is compressed, and the limit foot 12 leaves the limit groove 3 of the fixed steel plate 1. At this time, the support leg 22 or the joint cover 27 is grasped and pushed inward, driving the entire sliding telescopic structure to move inward. The two limit blocks 19 of the guide plate 17 move along the guide groove 2 of the fixed steel plate 1. After being pushed to the bottom, the support foot continues to be moved toward the accommodation of the base. The support leg 12 of the child seat body 1 is locked in the closed position and the support leg 12 is locked in the closed position.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A quick-install, retractable, and anti-flip support leg mechanism for a child safety seat, characterized by: It includes a fixed steel plate, a sliding telescopic structure, and a supporting leg structure. The fixed steel plate is connected and fixed to the base of the child seat body. The lower end of the fixed steel plate is provided with an opening, and the upper end is provided with a limiting groove. The sliding telescopic structure includes a support plate, a limit member, a double torsion spring, and a sliding plate. The support plate is U-shaped, and a through hole and a limit groove are provided at the upper end of the support plate. Hinge hole I and hinge hole II are provided on both sides of the support plate, and hinge columns are provided in hinge hole I and hinge hole II; the sliding plate is provided with a limit groove, and connecting columns are provided at the four corners of the bottom of the sliding plate; a limit foot is provided at one end of the limit member, and a supporting inclined surface is provided at the other end. Hinge holes are provided on both sides of the limit member, and the limit member is sleeved on the hinge column in hinge hole I through the hinge hole, and the upper end of the limit foot passes through the limit groove on the sliding plate and is stuck in the limit groove of the fixed steel plate, and the lower end of the limit foot is provided in the limit groove on the support plate; the double torsion spring is sleeved on the hinge column in hinge hole I, and the middle steel wire of the double torsion spring supports the supporting inclined surface of the limit member; The supporting leg structure includes a supporting leg, a flip joint, and a joint cover. The flip joint is provided with a hinge hole and a top block. The flip joint is sleeved on the hinge column in the hinge hole II through the hinge hole. The other end of the flip joint is connected to the supporting leg. Springs are provided on both sides of the flip joint, and the springs are sleeved on the hinge column in the hinge hole II. The joint cover is provided with connecting holes around it. The joint cover is connected and fixed to the sliding plate and the connecting columns at the four corners of the bottom of the sliding plate through the connecting holes. An accommodating cavity is provided at the lower end of the joint cover, and hinge holes are provided on both sides of the accommodating cavity. The joint cover is sleeved on the hinge column in the hinge hole II through the hinge hole. An inclined surface is provided at the bottom of the joint cover for supporting the springs on both sides of the flip joint.

2. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1, characterized in that: The upper end of the fixed steel plate is provided with a guide groove, the upper end of the supporting plate is provided with a through groove and a limiting circular hole, the upper end of the sliding plate is provided with a through groove, and a connecting column is provided at the center of the bottom of the sliding plate. The sliding telescopic structure also includes a guide plate. The guide plate is provided with a raised circular limiting column, which passes through the limiting circular hole on the supporting plate and is connected and fixed to the connecting column at the center of the bottom of the sliding plate. Two limiting blocks are provided at one end of the guide plate, which pass through the through grooves on the supporting plate and the sliding plate and slide in the guide groove of the fixed steel plate. A pin hole is provided on the limiting block, and the pin holes of the two limiting blocks are connected to each other through a pin.

3. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1 or 2, characterized in that: The lower opening of the fixed steel plate is provided with an inward bend.

4. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1 or 2, characterized in that: One end of the limiting foot is provided with an inclined surface.

5. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1 or 2, characterized in that: One end of the flip joint is inserted into the cavity of the support leg and fixedly connected to the support leg with bolts.

6. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 5, characterized in that: The flip joint is provided with a plurality of reinforcing ribs.

7. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1 or 2, characterized in that: The upper end of the joint cover is provided with a groove and a notch, and the shape of the notch matches the shape of the guide plate.

8. The quick-install, retractable and adjustable anti-flip support leg mechanism for a child safety seat according to claim 1 or 2, characterized in that: A limit pin is provided at the lower end of the limit foot, and compression spring holes are provided on both sides of the joint cover. Return compression springs are provided in the compression spring holes, one end of the return compression spring is sleeved on the limit pin, and the other end rests on the compression spring hole of the joint cover.

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