A support leg structure for a child safety seat

Abstract

This utility model discloses a support leg structure for a child safety seat, comprising an outer tube, an inner tube, and an adjustment mechanism. One end of the inner tube is slidably fitted inside the outer tube. The side wall of the inner tube has a plurality of adjustment holes evenly distributed along its length. The adjustment mechanism includes a locking buckle assembly and a first elastic element. A mounting seat is provided on the outer wall of the outer tube. The locking buckle assembly is hinged to the mounting seat. The first elastic element abuts against the outer tube and the locking buckle assembly. The locking buckle assembly includes a limiting pin that locks into the adjustment holes. The side wall of the outer tube has a first clearance hole corresponding to the limiting pin. The first elastic element acts on the locking buckle assembly, ensuring that the limiting pin always has a tendency to pass through the first clearance hole and insert into the corresponding adjustment hole. This application improves the assembly efficiency of the adjustment mechanism.

Description

Technical Field

[0001] This application relates to the field of child safety seat technology, and in particular to a support leg structure for a child safety seat. Background Technology

[0002] Child safety seats are devices designed specifically for children and installed in cars to improve passenger safety. Child safety seats are typically equipped with support legs to enhance installation stability. Due to differences in vehicle size and seat height, the support legs are usually designed to be extendable. In existing technology, for example, Chinese utility model patent (authorization announcement number CN217778441U) discloses a child safety seat support leg extension mechanism, including an outer tube, an inner tube, an adjustment mechanism, and a support seat assembly. The inner tube slides within the outer tube, the adjustment mechanism is located on the outer tube, and the support seat assembly is located at the lower end of the inner tube. The adjustment mechanism includes a housing, two buttons, two limiting pins, and two springs. The housing consists of two outer shells, with the two buttons, two limiting pins, and two springs located between the two outer shells. The buttons are rotatably connected to the housing. The limiting pins and springs are respectively located at both ends of the buttons. Under the action of the springs, the buttons can sequentially insert the limiting pins into the outer tube and the inner tube, locking the outer tube and the inner tube together.

[0003] However, in the existing technology, when the adjustment mechanism needs to be installed on the outer tube, two limiting pins are first pre-installed on one end of the two buttons, then the two buttons are embedded in both sides of one of the housings, then two springs are respectively abutted against the other ends of the two buttons, then the housing with the buttons is fitted onto the side wall of the outer tube, and finally the two housings are assembled into a shell, so that the two housings wrap around the outer peripheral side wall of the outer tube. As can be seen from the above, the assembly efficiency of the adjustment mechanism is low due to the cumbersome assembly steps. In order to overcome the above problems, a support leg structure for a child safety seat is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a support leg structure for a child safety seat.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The device includes an outer tube, an inner tube, and an adjustment mechanism. One end of the inner tube is slidably fitted inside the outer tube. The side wall of the inner tube has a plurality of adjustment holes evenly distributed along its length. The adjustment mechanism includes a locking buckle assembly and a first elastic element. The outer wall of the outer tube is provided with a mounting base. The locking buckle assembly is hinged to the mounting base. The first elastic element abuts against the outer tube and the locking buckle assembly. The locking buckle assembly includes a limiting pin that locks into the adjustment holes. The side wall of the outer tube is provided with a first clearance hole corresponding to the limiting pin. The first elastic element can act on the locking buckle assembly, so that the limiting pin always has a tendency to pass through the first clearance hole and insert into the corresponding adjustment hole.

[0006] Preferably, there are two adjustment mechanisms, and several adjustment holes are respectively opened on the two side walls of the inner tube and arranged along the length direction, and the two adjustment mechanisms are symmetrically arranged on both sides of the outer tube.

[0007] Preferably, along the length of the outer tube, the locking buckle assembly includes at least two limiting pins, and the first clearance hole is provided in a one-to-one correspondence with the limiting pins.

[0008] Preferably, the locking buckle assembly includes a linkage component and a driving component, the linkage component and the driving component are fixedly connected, one end of the driving component is hinged to the mounting base, the first elastic component abuts between the outer tube and the driving component, and the limiting pin is disposed on the side wall of the linkage component.

[0009] Preferably, the end of the limiting pin is provided with a guide slope.

[0010] Preferably, the outer tube is fitted with a housing, which covers the outside of the adjustment mechanism. The side wall of the housing is provided with a clearance notch corresponding to the driving member, and a portion of the driving member can pass through the clearance notch and extend out of the housing.

[0011] Preferably, a fitting sleeve is fixedly sleeved on the outer periphery of one end of the inner tube, and the fitting sleeve is in sliding fit with the outer tube.

[0012] Preferably, a mating ring seat is fixedly sleeved on the inner circumference of one end of the outer tube, and the mating ring seat is in sliding fit with the inner tube.

[0013] Preferably, a support assembly is provided at the end of the inner tube away from the outer tube. The support assembly includes a base rod, a rotating block, a second elastic element, a base plate, and a shell. The shell is fixed to the base plate. The base rod is movably inserted through the base plate along the length of the inner tube. The base plate and the shell cooperate to form an accommodating space. The rotating block is rotatably disposed within the accommodating space. One end of the rotating block abuts against the upper end of the base rod. The second elastic element abuts between the rotating block and the base plate. The second elastic element can act on the base rod through the rotating block, so that the lower end of the base rod always has a tendency to extend out of the base plate.

[0014] Preferably, the sidewall of the rotating block is provided with a first mark and a second mark, and the sidewall of the shell is provided with an observation hole corresponding to the rotating block.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. The support leg needs to be assembled. Simply insert the inner tube into the outer tube, and then install the locking buckle assembly and the first elastic element on the outside of the outer tube in sequence. At the same time, let the limit pin pass through the docking hole and insert into the adjustment hole, thereby locking and fixing the outer tube and the inner tube. Compared with the existing technology, the installation steps of the adjustment mechanism are greatly reduced, thereby improving the assembly efficiency of the adjustment mechanism. 2. The locking buckle assembly includes a driving component and a linkage component. The driving component is made of plastic, and the linkage component is made of iron. The two limiting pins of the linkage component are respectively inserted into two adjacent adjustment holes. Since the linkage component is made of iron, the locking buckle assembly has a stable locking effect on the inner tube. The driving component is made of plastic, which reduces the manufacturing cost of the locking buckle assembly. 3. When the support assembly contacts the bottom of the car interior, the bottom rod moves into the support assembly and then pushes the rotating block so that the second mark corresponds to the observation hole. This indicates that the support assembly is in full contact with the bottom of the car interior. If the first mark corresponds to the observation hole, it indicates that the support assembly is not in full contact with the bottom of the car interior or is in a separated state. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the support leg of this utility model; Figure 2 This is a cross-sectional schematic diagram of the adjustment mechanism of this utility model; Figure 3 This is an exploded view of the adjusting mechanism of this utility model; Figure 4 This is an exploded view of the support base assembly of this utility model.

[0017] In the diagram: 1. Support base assembly; 2. Outer tube; 3. Inner tube; 4. Adjustment mechanism; 5. Guide slope; 7. Adjustment hole; 8. Fitting sleeve; 9. Second clearance hole; 10. Fitting ring seat; 11. Outer shell; 12. Locking buckle assembly; 13. Clearance notch; 14. Half shell; 15. Limiting pin; 16. Driving component; 17. Linkage component; 18. Pressing block; 19. First elastic component; 20. Mounting base; 21. Connecting rod; 22. Base rod; 23. Rotating block; 24. Second elastic component; 25. Base plate; 26. Shell sleeve; 27. First mark; 28. Second mark; 29. ​​Observation hole; 30. First clearance hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] This application discloses a support leg structure for a child safety seat.

[0020] Reference Figure 1 When in working condition, the support leg is placed vertically. The support leg includes a support base assembly 1, an outer tube 2, an inner tube 3, and two adjustment mechanisms 4. The inner tube 3 is inserted and slids inside the outer tube 2. The adjustment mechanism 4 is located at the lower end of the outer tube 2, and the support base assembly 1 is located at the lower end of the inner tube 3.

[0021] Reference Figure 2 and Figure 3 The inner tube 3 has several adjusting holes 7 evenly distributed along its length on its corresponding side walls. The outer tube 2 has two first clearance holes 30 on its corresponding side walls. A fitting sleeve 8 is fixedly fitted onto the upper end of the inner tube 3. Two second clearance holes 9 are provided on the corresponding side walls of the fitting sleeve 8. The two first clearance holes 30 and the two second clearance holes 9 correspond to the two adjacent adjusting holes 7. The fitting sleeve 8 slides against the inner wall of the outer tube 2. A fitting ring seat 10 is inserted and fixed onto the inner circumference of the lower end of the outer tube 2. The inner circumference of the fitting ring seat 10 slides against the inner tube 3. With the cooperation of the fitting sleeve 8 and the fitting ring seat 10, the inner tube 3 can slide stably within the outer tube 2 without direct contact with the outer tube 2, preventing wear on both the outer tube 2 and the inner tube 3 and thus extending their service life.

[0022] The adjusting mechanism 4 includes a locking buckle assembly 12 and a first elastic element 19. A housing 11 is fitted around the outer periphery of the outer tube 2. Two adjusting mechanisms 4 are located inside the housing 11 and are symmetrically arranged. Alternating notches 13 are provided on the corresponding side walls of the housing 11. The housing 11 includes two half-shells 14, which divide the alternation notches 13. The two half-shells 14 are vertically symmetrical and fixed with screws. Two locking buckle assemblies 12 are located outside the two working surfaces 6 of the outer tube 2, corresponding to the two alternation notches 13. Each locking buckle assembly 12 includes two limiting pins 15, a driving element 16, a linkage element 17, and a pressing block 18. A guide slope 5 is provided at one end near the inner tube 3. One end of the pressing block 18 is integrally formed on the outer side wall of the driving element 16. The two working surfaces 6 of the outer tube 2 are respectively... A mounting base 20 is welded and fixed. One end of the driving component 16 is rotatably connected to the mounting base 20. The pressing block 18 is located outside the outer shell 11. The linkage component 17 is located inside the driving component 16. One end of the linkage component 17 is rotatably connected to the mounting base 20. A connecting rod 21 is inserted and fixed between the driving component 16 and the linkage component 17. The connecting rod 21 connects and fixes the linkage component 17 and the driving component 16. One end of each of the two limiting pins 15 is integrally set on the inner side wall of the linkage component 17. The first elastic element 19 is located on the torsion spring. The first elastic element 19 is sleeved on the circumference of the rotating shaft of the mounting base 20. One end of the first elastic element 19 abuts against the side wall of the outer tube 2. The other end of the first elastic element 19 abuts against the side wall of the connecting rod 21. The inner ends of the two limiting pins 15 pass through the two first clearance holes 30, the two second clearance holes 9 and the two adjacent adjustment holes 7 in sequence. The driving component 16 is made of plastic, and the linkage component 17 is made of iron. The two limiting pins 15 of the linkage component 17 are inserted into two adjacent adjusting holes 7 respectively. Since the linkage component 17 is made of iron, the locking buckle assembly 12 has a stable locking effect on the inner tube 3. The driving component 16 is made of plastic, which reduces the manufacturing cost of the locking buckle assembly 12.

[0023] Reference Figure 4The support assembly 1 includes two base rods 22, two rotating blocks 23, two second elastic elements 24, a base plate 25, and a housing 26. The lower end of the inner tube 3 passes through the side wall of the housing 26 and is snapped and fixed to the base plate 25. The base plate 25 and the housing 26 are fixedly connected by bolts. The longitudinal section of the base rods 22 is convex. The two base rods 22 are respectively inserted into the bottom of the base plate 25. The two rotating blocks 23 are located between the base plate 25 and the housing 26 and are rotatably connected to the base plate 25. The second elastic elements 24 are torsion springs. Two second elastic members 24 are respectively fitted onto the rotation shafts of the two rotating blocks 23. One end of the second elastic member 24 abuts against the inside of the rotating block 23, and the other end abuts against the side wall of the base plate 25. One end of the rotating block 23 abuts against the upper end of the base rod 22. The side wall of the rotating block 23 has a first mark 27 and a second mark 28. The first mark 27 is red, and the second mark 28 is green. The side wall of the housing 26 has two observation holes 29, which can correspond to either the first mark 27 or the second mark 28. When the support assembly 1 contacts the bottom of the car interior, the base rod 22 moves into the support assembly 1 and then pushes the rotating block 23 so that the second mark 28 corresponds to the observation hole 29. This indicates that the support assembly 1 is in full contact with the bottom of the car interior. If the first mark 27 corresponds to the observation hole 29, it indicates that the support assembly 1 is not in full contact with the bottom of the car interior or is in a separated state.

[0024] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A support leg structure for a child safety seat, comprising an outer tube (2), an inner tube (3), and an adjustment mechanism (4), wherein one end of the inner tube (3) is slidably fitted inside the outer tube (2), and a plurality of adjustment holes (7) are evenly provided on the side wall of the inner tube (3) along its length, characterized in that: The adjustment mechanism (4) includes a locking buckle assembly (12) and a first elastic element (19). The outer wall of the outer tube (2) is provided with a mounting seat (20). The locking buckle assembly (12) is hinged to the mounting seat (20). The first elastic element (19) abuts between the outer tube (2) and the locking buckle assembly (12). The locking buckle assembly (12) includes a limiting pin (15) that locks into the adjustment hole (7). The side wall of the outer tube (2) is provided with a first clearance hole (30) corresponding to the limiting pin (15). The first elastic element (19) can act on the locking buckle assembly (12) so that the limiting pin (15) always has the tendency to pass through the first clearance hole (30) and insert into the corresponding adjustment hole (7).

2. The child safety seat support leg structure according to claim 1, characterized in that, The adjustment mechanism (4) has two parts, and several adjustment holes (7) are respectively opened on both sides of the inner tube (3) and arranged along the length direction. The two adjustment mechanisms (4) are symmetrically arranged on both sides of the outer tube (2).

3. The child safety seat support leg structure according to claim 1, characterized in that, Along the length of the outer tube (2), the locking buckle assembly (12) includes at least two limiting pins (15), and the first clearance hole (30) is provided in a one-to-one correspondence with the limiting pins (15).

4. The child safety seat support leg structure according to claim 1, characterized in that, The locking buckle assembly (12) includes a linkage (17) and a drive (16). The linkage (17) and the drive (16) are fixedly connected. One end of the drive (16) is hinged to the mounting base (20). The first elastic member (19) abuts against the outer tube (2) and the drive (16). The limiting pin (15) is disposed on the side wall of the linkage (17).

5. The child safety seat support leg structure according to claim 1, characterized in that, The end of the limiting pin (15) is provided with a guide slope (5).

6. The child safety seat support leg structure according to claim 4, characterized in that, The outer tube (2) is fitted with a shell (11), which covers the outside of the adjustment mechanism (4). The side wall of the shell (11) is provided with a clearance notch (13) corresponding to the drive member (16). Part of the drive member (16) can pass through the clearance notch (13) and extend out of the shell (11).

7. The support leg structure for a child safety seat according to claim 1, characterized in that... A fitting sleeve (8) is fixedly sleeved on the outer periphery of one end of the inner tube (3), and the fitting sleeve (8) and the outer tube (2) are in sliding fit.

8. The child safety seat support leg structure according to claim 1, characterized in that, A fitting ring seat (10) is fixedly sleeved on the inner circumference of one end of the outer tube (2), and the fitting ring seat (10) and the inner tube (3) are in sliding fit.

9. A support leg structure for a child safety seat according to claim 1, characterized in that, A support assembly (1) is provided at the end of the inner tube (3) away from the outer tube (2). The support assembly (1) includes a base rod (22), a rotating block (23), a second elastic element (24), a base plate (25), and a shell (26). The shell (26) is fixed to the base plate (25). The base rod (22) moves along the length of the inner tube (3) through the base plate (25). The base plate (25) and the shell (26) fit together to form a shape. The rotating block (23) is rotatably disposed within the accommodating space. One end of the rotating block (23) abuts against the upper end of the bottom rod (22). The second elastic member (24) abuts against the rotating block (23) and the bottom plate (25). The second elastic member (24) can act on the bottom rod (22) through the rotating block (23), so that the lower end of the bottom rod (22) always has a tendency to extend out of the bottom plate (25).

10. A support leg structure for a child safety seat according to claim 9, characterized in that... The side wall of the rotating block (23) is provided with a first mark (27) and a second mark (28), and the side wall of the shell (26) is provided with an observation hole (29) corresponding to the rotating block (23).

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