Telescopic supporting leg and child safety seat

Abstract

The utility model relates to the technical field of child safety seats, and provides a telescopic supporting leg and a child safety seat. The lifting pipe is movably connected to the fixed pipe; the switch piece is movably connected between the fixed pipe and the lifting pipe; the end cover is connected to the bottom of the fixed pipe or the lifting pipe, an observation window, a first identification block and a second identification block are arranged on the end cover, the first identification block is fixed to the end cover, the second identification block is elastically connected to the end cover, and one end of the second identification block is exposed to the bottom of the end cover. Compared with the prior art, the utility model has the advantages that the first identification block is fixedly arranged on the end cover, and the second identification block with one end exposed outside the end cover is movably arranged on the end cover, so that when the end cover is placed on the carriage bottom plate, the carriage bottom plate pushes the second identification block to move between the first identification block and the observation window; whether the supporting legs are adjusted in place or not is prompted, and normal use of the supporting legs is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of child safety seats, in particular to a retractable support leg and a child safety seat. Background Art

[0002] A child safety seat is a safety device designed specifically for infants and children, typically installed in the rear seat of a vehicle to protect them while in motion. It securely fastens to the vehicle's seat using various fastening methods (such as ISOFIX connectors and seat belts), ensuring that children are not ejected or seriously injured during emergency braking or a collision.

[0003] Child safety seats are fixed to cars. When the car collides or slows down, the child safety seat may slide, roll over or fall due to inertia. In order to solve the above problems, support legs with a supporting function are generally provided on the child safety seat to make the child safety seat more firmly fixed on the car seat. The support legs are provided with a telescopic structure that is suitable for various types of vehicles. The position of the support legs in the height direction of the car body is adjusted by the telescopic structure to abut against the car floor of various types of vehicles. However, when the existing support legs are used to adjust the distance between the support legs and the car floor by the above-mentioned telescopic structure, the support legs are always in a nearly vertical state, blocking the operator's line of sight, making it difficult to determine whether the support legs are tightly against the car floor. This makes it impossible to determine whether the support legs are adjusted to the appropriate height. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a retractable support leg and a child safety seat in view of the current status of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: to provide a retractable support leg, comprising: a fixed tube;

[0006] A lifting tube, which is movably connected to the fixed tube and has a fixed state and a movable state;

[0007] a switch member movably connected between the fixed tube and the lifting tube and movably engaged with the lifting tube, wherein when the switch member is engaged with the lifting tube, the lifting tube is in the fixed state, and when the switch member is disengaged from the lifting tube, the lifting tube is in the movable state;

[0008] an end cap connected to the bottom of the fixed tube or the lifting tube, the end cap having a first state and a second state, the end cap being provided with an observation window, a first identification block, and a second identification block, the first identification block being fixed to the end cap, the second identification block being elastically connected to the end cap with one end exposed at the bottom of the end cap, the first identification block having a first color facing the observation window, the second identification block having a second color facing the observation window, the first color and the second color being different;

[0009] When the end cap is in the first state, the first color can be observed through the observation window;

[0010] When the end cover is in the second state, the second identification block moves to be located between the first identification block and the observation window, and the second color can be observed through the observation window.

[0011] In the above-mentioned retractable support leg, the second identification block includes an identification block body and a tightening portion connected to the end of the identification block body, a first inclined surface is provided in the end cover, the identification block body movably abuts against the first inclined surface, and the tightening portion passes through the bottom end surface of the end cover.

[0012] In the above-mentioned retractable support leg, the lifting tube is provided with a plurality of engaging grooves along its length direction, a engaging portion is provided at one end of the switch member, and a pressing portion is provided at the other end of the switch member, the engaging portion is movably engaged with any one of the engaging grooves, and the pressing portion passes through the outer side wall of the fixed tube and is exposed on the outside of the fixed tube, and is used to drive the engaging portion to disengage from the engaging groove;

[0013] The lifting tube can be in a fixed state due to the clamping portion being clamped in the clamping groove, and can be in the movable state due to the clamping portion being disengaged from the clamping groove due to the force applied to the pressing portion.

[0014] The telescopic support leg further comprises:

[0015] a fixed housing connected to the fixed tube and forming a fixed space with the fixed tube, wherein the switch element is movably connected in the fixed space;

[0016] A first elastic member is connected in the fixed space, one end of the first elastic member is pressed against the pressing portion, and the other end is pressed against the fixed shell.

[0017] In the above-mentioned retractable supporting leg, the side wall of the switch member extends outward to form a connecting portion, a connecting groove is provided on the fixed shell, a movable space is formed between the connecting groove and the fixed tube, and the connecting portion is movably arranged in the movable space.

[0018] In the above-mentioned retractable supporting leg, the connecting groove includes a convex portion and a second inclined surface arranged on one side of the convex portion and inclined with respect to the convex portion; the connecting portion is provided with a concave portion and a third inclined surface arranged on one side of the concave portion and inclined with respect to the concave portion; the convex portion and the concave portion movably abut against each other to provide a fulcrum for the movement of the switch member in the movable space; the second inclined surface and the third inclined surface movably abut against each other to provide a limit for the switch member.

[0019] In the above-mentioned retractable support leg, the switch member includes a main body and a pressing cover connected to the main body, the pressing cover is used to form the pressing portion, and a limiting protrusion is provided on one end of the pressing cover facing the fixed tube, and the limiting protrusion is inserted into the first elastic member to provide a limit for the first elastic member.

[0020] In the above-mentioned retractable support leg, the fixed shell includes a shell and a snap-fitting protrusion elastically connected to the shell, a positioning hole is provided on the fixed tube, the shell is inserted into the fixed tube, and the snap-fitting protrusion is movably snap-fitted with the positioning hole.

[0021] The above-mentioned retractable supporting leg further includes a second elastic member, and the second elastic member is connected between the second identification block and the end cover.

[0022] The utility model solves the above technical problem and further provides a child safety seat, which includes the above-mentioned retractable support leg.

[0023] Compared with the prior art, the advantage of the present invention is that a first identification block is fixedly provided on the end cover, and a second identification block with one end exposed to the outside of the end cover is movably provided on the end cover. When the end cover is placed on the car floor, the second identification block is pushed by the car floor to move between the first identification block and the observation window, thereby indicating whether the support leg is adjusted into place and ensuring the normal use of the support leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a retractable support leg of the utility model;

[0025] Figure 2 yes Figure 1 Floor plan in;

[0026] Figure 3 yes Figure 2 Cross-sectional view along the AA axis;

[0027] Figure 4 yes Figure 1 A partial cross-sectional view of

[0028] Figure 5 It is a three-dimensional diagram of the switch component when connected to the fixed housing;

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0030] Figure 7 yes Figure 1 A three-dimensional diagram in which the fixing tube and the fixing shell are omitted.

[0031] In the figure, 1. fixing tube; 2. lifting tube; 3. switch member; 4. end cover; 5. observation window; 6. first identification block; 7. second identification block; 8. identification block body; 9. pressing portion; 10. first inclined surface; 11. snap-fit ​​groove; 12. snap-fit ​​portion; 13. pressing portion; 14. fixing shell; 15. first elastic member; 16. connecting portion; 17. connecting groove; 18. convex portion; 19. second inclined surface; 20. concave portion; 21. third inclined surface; 22. body; 23. pressing cover; 24. limiting boss; 25. shell; 26. snap-fit ​​boss; 27. positioning hole. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] like Figures 1 to 7 As shown, in this solution, the specific structure of the support leg and its application in the child safety seat are mainly described in detail.

[0034] A telescopic supporting leg comprises: a fixing tube 1, a lifting tube 2, a switch member 3, and an end cover 4.

[0035] The lifting tube 2 is movably connected to the fixed tube 1 and has a fixed state and a movable state; the switch member 3 is movably connected between the fixed tube 1 and the lifting tube 2 and is movably engaged with the lifting tube 2. When the switch member 3 is engaged with the lifting tube 2, the lifting tube 2 is in a fixed state. When the switch member 3 is disengaged from the lifting tube 2, the lifting tube 2 is in an active state; the end cover 4 is connected to the bottom of the fixed tube 1 or the lifting tube 2. The end cover 4 has a first state and a second state. The end cover 4 is provided with an observation window 5, a first identification block 6 and a second identification block 7. The first identification block The identification block 6 is fixed on the end cover 4, the second identification block 7 is elastically connected to the end cover 4 and one end is exposed at the bottom of the end cover 4, the first identification block 6 has a first color facing the observation window 5, and the second identification block 7 has a second color facing the observation window 5, and the first color and the second color are different; when the end cover 4 is in the first state, the first color can be observed through the observation window 5; when the end cover 4 is in the second state, the second identification block 7 moves to be located between the first identification block 6 and the observation window 5, and the second color can be observed through the observation window 5.

[0036] The movable connection between the lifting tube 2 and the fixed tube 1 can be achieved by movably inserting the lifting tube 2 into the fixed tube 1. In this case, the end cap 4 is connected to the end of the lifting tube 2. Of course, the movable connection between the lifting tube 2 and the fixed tube 1 can also be achieved by inserting the fixed tube 1 into the lifting tube 2. In this case, the end cap 4 is connected to the end of the fixed tube 1. The switch member 3 is used to lock and unlock the lifting tube 2 and the fixed tube 1, thereby achieving height adjustment between the lifting tube 2 and the fixed tube 1.

[0037] The first state of the end cap 4 is defined as when the support legs are not in contact with the vehicle floor, while the second state of the end cap 4 is defined as when the end cap 4 is properly in contact with the vehicle floor. In the initial state, the end cap 4 is not in contact with the vehicle floor, and one end of the second identification block 7 is exposed at the bottom of the end cap 4. The user can observe the first color (which can be red or another color) through the observation window 5. During operation, after adjusting the relative position between the lifting tube 2 and the fixed tube 1, the end cap 4 is pressed against the vehicle floor. At this point, under the weight of the support legs, the second identification block 7 is pushed into the end cap 4 by the vehicle floor and positioned between the first identification block 6 and the observation window 5. At this point, the second color (green or any color different from the first) can be observed through the observation window 5. If the end cap 4 is not fully in contact with the vehicle floor, the first and second colors can be seen simultaneously through the observation window 5, reminding the operator to readjust the relative position between the lifting tube 2 and the fixed tube 1.

[0038] In this solution, a first identification block 6 is fixedly set on the end cover 4, and a second identification block 7 with one end exposed to the outside of the end cover 4 is movably set on the end cover 4. When the end cover 4 is placed on the car floor, the second identification block 7 is pushed by the car floor to move between the first identification block 6 and the observation window 5, thereby prompting whether the support leg is adjusted into place, thereby ensuring the normal use of the support leg.

[0039] The second identification block 7 includes an identification block body 8 and a tightening portion 9 connected to the end of the identification block body 8. A first inclined surface 10 is provided inside the end cover 4. The identification block body 8 and the first inclined surface 10 are movably abutted against each other, and the tightening portion 9 passes through the bottom end surface of the end cover 4.

[0040] The identification block body 8 is used to realize the connection between the second identification block 7 and the end cover 4. Preferably, the connection between the identification block body 8 and the end cover 4 can be realized by a snap connection, or by a threaded connection, or by a combination of a snap connection and a threaded connection. The first inclined surface 10 is used to provide support and limitation for the second identification block 7 when the second identification block 7 moves to abut against it.

[0041] Preferably, the elastic connection between the second identification block 7 and the end cover 4 can be achieved by making the second identification block 7 from an elastic material, or by providing a second elastic member between the second identification block 7 and the end cover 4. That is, before the end cover 4 contacts the vehicle floor, the elastic force of the second elastic member causes one end of the second identification block 7 to be exposed outside the end cover 4; after the end cover 4 is in close contact with the vehicle floor, the elastic force of the second elastic member is overcome, causing the second identification block 7 to compress the second elastic member, thereby allowing the end of the second identification block 7 to retract into the end cover 4; when the end cover 4 is separated from the vehicle floor again, the second elastic member extends and pushes the second identification block 7 to return to its original position.

[0042] The lifting tube 2 is provided with a plurality of engaging grooves 11 along its length direction. A engaging portion 12 is provided at one end of the switch member 3, and a pressing portion 13 is provided at the other end of the switch member 3. The engaging portion 12 is movably engaged with any one of the engaging grooves 11. The pressing portion 13 passes through the outer wall of the fixed tube 1 and is exposed on the outside of the fixed tube 1, and is used to drive the engaging portion 12 to disengage from the engaging groove 11. The lifting tube 2 can be in a fixed state due to the engaging portion 12 in the engaging groove 11, and can be in a movable state due to the force applied to the pressing portion 13 to disengage the engaging portion 12 from the engaging groove 11.

[0043] Reference Figure 3 and Figure 7 At this point, the engaging portion 12 engages with a engaging groove 11 at the bottom of the lifting tube 2. When the pressing portion 13 is pressed, the pressing portion 13 on the upper portion of the switch member 3 moves toward one side of the lifting tube 2, while the engaging portion 12 moves away from the lifting tube 2, causing the engaging portion 12 to disengage from the engaging groove 11. After adjusting the relative position between the lifting tube 2 and the fixed tube 1, the force applied to the pressing portion 13 is released, causing the engaging portion 12 to engage with the other engaging groove 11, completing the position adjustment between the lifting tube 2 and the fixed tube 1.

[0044] This solution also includes: a fixed shell 14, which is connected to the fixed tube 1 and forms a fixed space between the fixed tube 1, and the switch member 3 is movably connected in the fixed space; a first elastic member 15, which is connected in the fixed space, one end of the first elastic member 15 is pressed against the pressing portion 13, and the other end is pressed against the fixed shell 14.

[0045] The fixing housing 14 is used to secure the switch member 3 between the lifting tube 2 and the fixed tube 1. When the engaging portion 12 is engaged with the engaging groove 11, the first elastic member 15 applies a thrust to the pressing portion 13, thereby maintaining the switch member 3 in the fixed position on the lifting tube 2. After the relative position between the lifting tube 2 and the fixed tube 1 is adjusted and the pressure on the pressing portion 13 is released, the first elastic member 15 pushes the switch member 3 back into place.

[0046] The side wall of the switch member 3 extends outward to form a connecting portion 16. A connecting groove 17 is provided on the fixed shell 14. A movable space is formed between the connecting groove 17 and the fixed tube 1. The connecting portion 16 is movably provided in the movable space.

[0047] Specifically, the connecting groove 17 includes a convex portion 18 and a second inclined surface 19 arranged on one side of the convex portion 18 and inclined to the convex portion 18. The connecting portion 16 is provided with a concave portion 20 and a third inclined surface 21 arranged on one side of the concave portion 20 and inclined to the concave portion 20. The convex portion 18 and the concave portion 20 are movably abutted against each other to provide a fulcrum for the movement of the switch member 3 in the active space. The second inclined surface 19 and the third inclined surface 21 are movably abutted against each other to provide a limit for the switch member 3.

[0048] like Figure 7 As shown, when the pressing portion 13 is subjected to force, the switch member 3 uses the contact point between the convex portion 18 and the concave portion 20 as the fulcrum for the movement of the switch member 3, so that the third inclined surface 21 is pressed against the second inclined surface 19, and when the third inclined surface 21 is pressed against the second inclined surface 19, the continued movement of the switch member 3 is restricted.

[0049] The switch member 3 includes a main body 22 and a pressing cover 23 connected to the main body 22. The pressing cover 23 is used to form the pressing portion 13. A limiting protrusion 24 is provided at one end of the pressing cover 23 facing the fixed tube 1. The limiting protrusion 24 is inserted into the first elastic member 15 to provide a limit for the first elastic member 15 to prevent the first elastic member 15 from moving sideways when the pressing portion 13 is subjected to force. The connection between the main body 22 and the pressing cover 23 can be achieved by a snap connection or a threaded connection.

[0050] The fixing shell 14 includes a shell 25 and a clamping protrusion 26 elastically connected to the shell 25. A positioning hole 27 is provided on the fixing tube 1. When the shell 25 is inserted into the fixing tube 1, the clamping protrusion 26 is movably clamped with the positioning hole 27.

[0051] The elastic connection between the housing 25 and the engaging boss 26 can be achieved by providing a spring between the housing 25 and the engaging boss 26, or by making the fixed housing 14 entirely of an elastic material. The engaging boss 26 is movably engaged with the positioning hole 27 to secure the fixed housing 14 to the fixed pipe 1.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0055] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0056] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the scope defined by the spirit of the present invention.

Claims

1. A retractable support leg, characterized in that: include: Fixed pipe; A lifting tube, which is movably connected to the fixed tube and has a fixed state and a movable state; a switch member movably connected between the fixed tube and the lifting tube and movably engaged with the lifting tube, wherein when the switch member is engaged with the lifting tube, the lifting tube is in the fixed state, and when the switch member is disengaged from the lifting tube, the lifting tube is in the movable state; an end cap connected to the bottom of the fixed tube or the lifting tube, the end cap having a first state and a second state, the end cap being provided with an observation window, a first identification block, and a second identification block, the first identification block being fixed to the end cap, the second identification block being elastically connected to the end cap with one end exposed at the bottom of the end cap, the first identification block having a first color facing the observation window, the second identification block having a second color facing the observation window, the first color and the second color being different; When the end cap is in the first state, the first color can be observed through the observation window; When the end cover is in the second state, the second identification block moves to be located between the first identification block and the observation window, and the second color can be observed through the observation window.

2. A retractable support leg according to claim 1, characterized in that: The second identification block includes an identification block body and a pressing portion connected to the end of the identification block body. A first inclined surface is provided in the end cover. The identification block body movably abuts against the first inclined surface. The pressing portion passes through the bottom end surface of the end cover.

3. The retractable support leg according to claim 1, wherein: The lifting tube is provided with a plurality of engaging grooves along its length direction, a engaging portion is provided at one end of the switch member, and a pressing portion is provided at the other end of the switch member. The engaging portion is movably engaged with any one of the engaging grooves, and the pressing portion passes through the outer side wall of the fixing tube and is exposed on the outside of the fixing tube, and is used to drive the engaging portion to disengage from the engaging groove. The lifting tube can be in a fixed state due to the clamping portion being clamped in the clamping groove, and can be in the movable state due to the clamping portion being disengaged from the clamping groove due to the force applied to the pressing portion.

4. The retractable support leg according to claim 3, wherein: Also includes: a fixed housing connected to the fixed tube and forming a fixed space with the fixed tube, wherein the switch element is movably connected in the fixed space; A first elastic member is connected in the fixed space, one end of the first elastic member is pressed against the pressing portion, and the other end is pressed against the fixed shell.

5. The retractable support leg according to claim 4, characterized in that: The side wall of the switch member extends outward to form a connecting portion. A connecting groove is provided on the fixed shell. A movable space is formed between the connecting groove and the fixed tube. The connecting portion is movably arranged in the movable space.

6. The retractable support leg according to claim 5, characterized in that: The connecting groove includes a convex portion and a second inclined surface arranged on one side of the convex portion and inclined with respect to the convex portion. The connecting portion is provided with a concave portion and a third inclined surface arranged on one side of the concave portion and inclined with respect to the concave portion. The convex portion and the concave portion movably abut against each other to provide a fulcrum for the movement of the switch member in the movable space. The second inclined surface and the third inclined surface movably abut against each other to provide a limit for the switch member.

7. The telescopic support leg according to claim 4, characterized in that: The switch component includes a main body and a pressing cover connected to the main body, the pressing cover is used to form the pressing part, and a limiting protrusion is provided on one end of the pressing cover facing the fixing tube. The limiting protrusion is inserted into the first elastic member to provide a limit for the first elastic member.

8. The telescopic support leg according to claim 4, characterized in that: The fixing shell includes a shell and a clamping protrusion elastically connected to the shell. A positioning hole is provided on the fixing tube. The shell is inserted into the fixing tube, and the clamping protrusion is movably clamped with the positioning hole.

9. The telescopic support leg according to claim 2, wherein: It also includes a second elastic member, which is connected between the second identification block and the end cover.

10. A child safety seat, characterized in that: The invention comprises a retractable support leg according to any one of claims 1 to 9.

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