Rotary handle limiting mechanism of child safety seat

Abstract

The utility model provides a limiting mechanism for a rotary handle of a child safety seat. The child safety seat rotating handle limiting mechanism comprises a seat base, a limiting disc is fixed to the bottom of the seat base and comprises a small disc, a locking groove is formed in the small disc, the bottom of the small disc extends outwards to form a large disc, a base is rotationally connected to the outside of the small disc, a sliding groove is formed in the base, and the sliding groove is matched with the locking groove. A locking structure is arranged in the sliding groove, the locking structure slides to be staggered with the limiting disc in the rotating state, and the locking structure penetrates through the sliding groove of the base to be connected and locked with the locking groove of the limiting disc in the locking state. The structure is simple, operation is fast, and locking is safe and stable.

Description

Technical Field

[0001] The utility model relates to a rotating handle limiting mechanism for a child safety seat. Background Art

[0002] Child safety seats are currently widely used. In order to match the seat installation and locking methods and user usage habits, and to adapt to both front and rear installation methods of child safety seats, a rotation limit structure is usually provided. However, existing structures generally have problems such as complex structure, complicated operation, and poor locking effect. Utility Model Content

[0003] In view of the defects of the existing child safety seats, the technical problem to be solved by the present invention is to provide a rotating handle limiting mechanism for a child safety seat which has a simple structure and a stable locking.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, the present invention is implemented through the following technical measures:

[0005] A child safety seat rotating handle limiting mechanism comprises: a seat base, a limiting plate fixed to the bottom of the seat base, the limiting plate comprising a small disc, a locking groove being provided on the small disc, the bottom of the small disc extending outward to form a large disc, the small disc being rotatably connected to a base, the base being provided with a sliding groove, a locking structure being provided in the sliding groove, in a rotating state, the locking structure slides and is staggered with the limiting plate, and in a locked state, the locking structure passes through the sliding groove of the base and is connected and locked with the locking groove of the limiting plate.

[0006] Furthermore, the bottom of the seat base extends downward to form a protrusion, and a notch is opened in the protrusion. The shape of the notch corresponds to the small disc of the limiting plate, and the notch of the seat base and the small disc of the limiting plate are fixed by bolts.

[0007] Furthermore, a through hole is opened at the upper end of the base, and a circle of circular groove is opened at the top of the through hole. The diameter of the circular groove is larger than the diameter of the through hole. Reinforcing ribs are provided around the circular groove and on the bottom of the circular groove. The reinforcing ribs around the circular groove are strip-shaped reinforcing ribs, and the reinforcing ribs on the bottom of the circular groove are annular reinforcing ribs.

[0008] Furthermore, a guide groove and a strip-shaped through hole are opened in the sliding groove, a spring support groove is opened at one end of the guide groove, the locking structure includes a sliding block, a lock tongue block is provided at one end of the sliding block, and the sliding block is provided with guide columns whose positions and number correspond to the strip-shaped through holes of the sliding groove, and the guide columns pass through the strip-shaped through holes to enable the locking structure to be slidably connected to the sliding groove of the base.

[0009] Furthermore, the number of the strip-shaped through holes in the sliding groove and the guide columns of the sliding block is three, the position of the middle guide column corresponds to the spring support groove, a spring column is fixed at the bottom thereof, a spring is provided between the spring column and the spring support groove, and the bottom of the sliding block is open to form a handle portion.

[0010] Furthermore, the limiting plate has two locking grooves, which are positioned symmetrically with the central axis of the limiting plate. The edge of the small disc is provided with square grooves, which are evenly distributed on both sides of the locking groove.

[0011] Compared with the prior art, the advantages of the present invention are: simple structure, quick operation, safe and stable locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 The utility model is a schematic structural diagram of a rotating handle limiting mechanism for a child safety seat.

[0014] Figure 2 This is a schematic diagram of the explosion of the rotating handle limit mechanism of the child safety seat described in this utility model Figure 1 .

[0015] Figure 3 This is a schematic diagram of the explosion of the rotating handle limit mechanism of the child safety seat described in this utility model Figure 2 .

[0016] Figure 4 This is a schematic diagram of the base structure described in the utility model.

[0017] Explanation of the accompanying reference numerals: 1. Seat base; 2. Limit plate; 3. Base; 4. Locking structure; 5. Sliding groove; 6. Spring; 7. Lock tongue block; 8. Sliding block; 9. Guide column; 10. Handle; 11. Large disc; 12. Small disc; 13. Through hole; 14. Circular groove; 15. Reinforcing rib; 16. Square groove; 17. Locking groove; 18. Spring column; 19. Protrusion; 20. Notch; 21. Guide groove; 22. Strip through hole; 23. Spring support groove. DETAILED DESCRIPTION

[0018] 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.

[0019] In the description of the present invention, 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 invention 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 invention.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The rotating handle limiting mechanism of the child safety seat includes: a seat base 1, a limiting plate 2 is fixed at the bottom of the seat base 1, the limiting plate 2 includes a small disc 12, a locking groove 17 is opened on the small disc 12, the bottom of the small disc 12 extends outward to form a large disc 11, the small disc 12 is rotatably connected to the base 3, the base 3 is opened with a sliding groove 5, and a locking structure 4 is provided in the sliding groove 5. In the rotating state, the locking structure 4 slides and is staggered with the limiting plate 2. In the locked state, the locking structure 4 passes through the sliding groove 5 of the base 3 and is connected and locked with the locking groove 17 of the limiting plate 2.

[0021] The bottom of the seat base 1 extends downward to form a protrusion 19, and a notch 20 is formed in the protrusion 19. The shape of the notch 20 corresponds to the small disc 12 of the limit plate 2. The notch 20 of the seat base 1 and the small disc 12 of the limit plate 2 are fixed by bolts.

[0022] A through hole 13 is provided at the upper end of the base 3, and a circular groove 14 is provided at the top of the through hole 13. The diameter of the circular groove 14 is larger than the diameter of the through hole 13. Reinforcing ribs 15 are provided around and on the bottom of the circular groove 14. The reinforcing ribs 15 around the circular groove 14 are strip-shaped reinforcing ribs 15, and the reinforcing ribs 15 on the bottom of the circular groove 14 are annular reinforcing ribs 15. The reinforcing ribs 15 reduce the contact surface and facilitate sliding.

[0023] A guide groove 21 and a strip-shaped through hole 22 are provided in the sliding groove 5, a spring support groove 23 is provided at one end of the guide groove 21, the locking structure 4 includes a sliding block 8, a lock tongue block 7 is provided at one end of the sliding block 8, and the sliding block 8 is provided with a guide column 9 whose position and number correspond to the strip-shaped through hole 22 of the sliding groove 5. The guide column 9 passes through the strip-shaped through hole 22 to enable the locking structure 4 to be slidably connected to the sliding groove 5 of the base 3.

[0024] There are three strip-shaped through holes 22 of the sliding groove 5 and three guide columns 9 of the sliding block 8. The position of the middle guide column 9 corresponds to the spring support groove 23. A spring column 18 is fixed to the bottom thereof. A spring 6 is provided between the spring column 18 and the spring support groove 23. The bottom of the sliding block 8 is open to form a handle portion 10.

[0025] The number of locking grooves 17 of the limit plate 2 is two, and their positions are symmetrical with the central axis of the limit plate 2. The edge of the small disc 12 is provided with square grooves 16, and the square grooves 16 are evenly distributed on both sides of the locking grooves 17, which act as reinforcing ribs, reduce material consumption, and reduce the contact surface during rotation, making rotation easier.

[0026] When the rotating handle limit mechanism of the child safety seat of the present invention is used, the base 3 is connected between the limit plate 2 and the seat base 1, the limit plate 2 is connected to the circular groove 14 at the bottom of the base 3, and the seat base 1 is connected to the circular groove 14 at the upper end of the base 3. The limit plate 2 and the seat base 1 are connected by bolts. After the connection, the limit plate 2 and the seat base 1 can rotate around the central through hole 13 of the groove of the base 3, and the handle part 10 of the sliding block 8 is pulled to drive the locking structure 4 to move, pushing the spring 6 to compress , the guide column 9 of the sliding block 8 moves along the strip-shaped through hole 22 of the base 3, and the sliding block 8 leaves the locking groove 17 of the limit plate 2. At this time, the seat base 1 can be rotated, and the handle portion 10 of the sliding block 8 can be released after the movement. At this time, the lock tongue block 7 of the locking structure 4 will press against the edge of the small disc 12 of the limit plate 2. Continue to rotate the seat base 1. After the sliding block 8 moves to another limit groove position, due to the elastic force of the spring 6, the lock tongue block 7 of the sliding block 8 is pushed into the limit groove to complete the locking.

[0027] 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 child safety seat rotating handle limiting mechanism, comprising: The seat base is characterized in that a limit plate is fixed at the bottom of the seat base, and the limit plate includes a small disc with a locking groove. The bottom of the small disc extends outward to form a large disc. The small disc is rotatably connected to the base, and the base has a sliding groove. A locking structure is provided in the sliding groove. In the rotating state, the locking structure slides and is staggered with the limit plate. In the locked state, the locking structure passes through the sliding groove of the base and is connected and locked with the locking groove of the limit plate.

2. The child safety seat rotating handle limiting mechanism according to claim 1, characterized in that: The bottom of the seat base extends downward to form a protrusion, and a notch is formed in the protrusion. The shape of the notch corresponds to the small disc of the limiting plate. The notch of the seat base and the small disc of the limiting plate are fixed by bolts.

3. The child safety seat rotation handle limiting mechanism according to claim 2, characterized in that: A through hole is provided at the upper end of the base, and a circular groove is provided at the top of the through hole. The diameter of the circular groove is larger than the diameter of the through hole. Reinforcing ribs are provided around the circular groove and on the bottom surface of the circular groove. The reinforcing ribs around the circular groove are strip-shaped reinforcing ribs, and the reinforcing ribs on the bottom surface of the circular groove are annular reinforcing ribs.

4. The child safety seat rotation handle limiting mechanism according to claim 2, characterized in that: A guide groove and a strip-shaped through hole are provided in the sliding groove, a spring support groove is provided at one end of the guide groove, the locking structure includes a sliding block, a locking tongue block is provided at one end of the sliding block, and the sliding block is provided with guide columns whose positions and number correspond to the strip-shaped through holes of the sliding groove. The guide columns pass through the strip-shaped through holes to enable the locking structure to be slidably connected to the sliding groove of the base.

5. The child safety seat rotating handle limiting mechanism according to claim 4, characterized in that: There are three strip-shaped through holes in the sliding groove and three guide columns in the sliding block. The position of the middle guide column corresponds to the spring support groove, and a spring column is fixed at the bottom. A spring is provided between the spring column and the spring support groove. The bottom of the sliding block is open to form a handle.

6. The child safety seat rotation handle limiting mechanism according to claim 2, characterized in that: The number of locking grooves of the limiting plate is two, and the positions are symmetrical with the central axis of the limiting plate. The edge of the small disc is provided with square grooves, and the square grooves are evenly distributed on both sides of the locking groove.

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