Supporting leg for child safety seat

Abstract

The invention relates to the technical field of child safety seats, and provides a supporting leg for a child safety seat, which comprises a movable seat and a supporting body, the observation window, the first identification block and the second identification block are arranged on the supporting body, the first identification block is fixed to the supporting body, the second identification block is elastically connected to the supporting body, one end of the second identification block is exposed at the bottom of the supporting body, the first identification block has a first color, and the second identification block has a second color. Compared with the prior art, the folding device has the advantages that the movable base and the supporting body are arranged on the base, when the supporting body is stored, the movable base is pushed to the storage position, the supporting body is pushed to the folding position, and the end face of the supporting body is not higher than the end face of the base; the size of the child safety seat is reduced to the maximum extent, the size of a packaging box used by the child safety seat is reduced, the space requirement for transportation and storage of the child safety seat is lowered, and transportation and storage of the child safety seat are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of child safety seats, in particular to a support leg for a child safety seat. Background Art

[0002] A child safety seat is a safety device designed for infants and children. It is usually installed in the back seat of a car to protect the child while the vehicle is moving. The child safety seat is firmly fixed to the car seat through a variety of fixing methods (such as ISOFIX interface, seat belt, etc.), ensuring that the child will not fly out or be seriously injured due to inertia in the event of emergency braking or collision.

[0003] The support legs on most child safety seats are usually designed to be rotated and folded. However, even if the support legs can be rotated and folded, they are still an integral part of the child safety seat. The presence of the support legs increases the volume of the packaging box used to package the child safety seat, thereby increasing the space requirements for transportation and storage, which brings inconvenience to transportation and storage. In addition, the existing support legs need to be in close contact with the vehicle floor to provide stable support. However, after the support legs are unfolded, due to their nearly vertical position, the operator's line of sight will be blocked, making it difficult to determine whether the support legs are in full contact with the vehicle floor, which may make it impossible to confirm whether the support legs are properly pressed against the vehicle floor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a support leg for a child safety seat in view of the current status of the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problem is: to provide a support leg for a child safety seat, the child safety seat comprises a base, and the support leg comprises: A movable seat, which is movably connected to the base and can move between a storage position and a maximum deployment position on the base; a support body, which is movably connected to the movable seat and can move between a folding position, an unlocking position and a use position on the base, wherein the unlocking position is located between the folding position and the use position, and when the support body is located at the folding position, an end surface of the support body is not higher than an end surface of the base; an observation window, a first identification block, and a second identification block arranged on a side of the support body away from the moving seat, wherein the first identification block is fixed to the support body, the second identification block is elastically connected to the support body and one end of the second identification block is exposed at the bottom of the support body, the first identification block has a first color facing the observation window, the second identification block has a second color facing the observation window, the first color and the second color are different, and when the support body moves to the use position and the end portion is pressed against the support platform, the second identification block moves between the first identification block and the observation window, and the second color can be observed through the observation window; The support leg has an unfolding stroke and a folding stroke; When in the unfolding stroke, any one of the movable seat and the supporting body can move after the supporting body is forced to leave the folded position; When in the folding stroke, the movable seat can move between the maximum unfolded position and the storage position because the support body moves from the use position to or beyond the unlocking position.

[0006] The above-mentioned support leg for a child safety seat also includes: A driving member, which is rotatably connected to the moving seat and moves synchronously with the supporting body; A moving member, which is movably disposed in the moving seat, and a first end of the moving member is connected to the driving member, and is used to drive the moving member to move on the moving seat when the driving member rotates; A locking member, which is elastically connected in the movable seat and is drivingly connected to the second end of the movable member, and a locking hole is provided on the base, and the locking hole is movably engaged with the locking member; When the support body is in the folding stroke but has not yet reached the unlocking position, the locking member is engaged in the locking hole to keep the movable seat fixed; When the supporting body is in the folding stroke and reaches or exceeds the unlocking position, the second end of the moving member pushes the locking member to disengage from the locking hole, so that the moving seat can move relative to the base.

[0007] In the above-mentioned support leg for a child safety seat, the locking member comprises: A main body, wherein a first inclined surface is arranged on the main body, and a second inclined surface is arranged on the moving member, wherein the second inclined surface is movably pressed against the first inclined surface, and when the moving member moves on the moving seat, the first inclined surface and the second inclined surface push the locking member to separate from the locking hole; A latch connected to the main body, a second end of the movable member is provided with a guide groove sleeved on the outer side of the latch, the guide groove is used to provide a guide for the movement of the locking member, and the latch is movably inserted in the locking hole; The first elastic member, the movable seat includes a guide tube, the guide tube is fixed on the movable seat, and one end of the guide tube away from the movable seat is movably inserted in the base, the first elastic member is arranged in the guide tube, one end of the first elastic member is pressed against the inner wall of the guide tube, and the other end is pressed against the main body.

[0008] In the above-mentioned support leg for a child safety seat, a rotating shaft and a limit block are provided on the movable seat, the support body is rotatably connected to the movable seat via the rotating shaft, the driving member is connected to one end of the rotating shaft, and is used to drive the driving member to move on the movable seat when the support body rotates, and the limit block is fixed on the movable seat, and when the support body moves to the use position, the limit block is tightly pressed against the end of the support body to provide a limit for the support body.

[0009] In the above-mentioned support leg for a child safety seat, a driving groove is provided at the first end of the movable member, and a driving part is provided on the driving member, the center line of which is not colinear with the rotation center line of the rotating shaft, and the driving part is movably inserted in the driving groove to drive the movable member to move when the driving member rotates.

[0010] In the above-mentioned support leg for a child safety seat, a first torsion spring is sleeved on the outer side of the rotating shaft, and a first deformation part and a second deformation part are provided on the first torsion spring. The first deformation part is connected to the movable seat, and the second deformation part is pressed against the support body. When the support body moves to the folded position, the second deformation part is driven to approach the first deformation part, so as to compress the first torsion spring and store energy.

[0011] In the above-mentioned support leg for a child safety seat, a protective cover is rotatably provided on the movable seat, and the protective cover moves synchronously with the support body to cover the end of the support body when the support body moves to the folded position.

[0012] In the above-mentioned support leg for a child safety seat, the second identification block includes an identification block body and a tightening portion connected to the end of the identification block body, a third inclined surface is provided in the support body, the identification block body movably abuts against the third inclined surface, the tightening portion passes through the bottom end surface of the support body, a second elastic member is provided in the support body, and the second elastic member is connected between the support body and the second identification block.

[0013] The above-mentioned support leg for a child safety seat further includes: A lifting tube, which is movably connected to the supporting body and has a fixed state and a movable state; a switch member, which is movably connected between the support body and the lifting tube and is movably engaged with the lifting tube. When the switch member is engaged with the lifting tube, the lifting tube is in the fixed state. When the switch member is disengaged from the lifting tube, the lifting tube is in the active state. A fixed shell, which is connected to the supporting body and forms a fixed space with the supporting body, and the switch element is movably connected in the fixed space; A third elastic member is connected in the fixed space, one end of the third elastic member is pressed against the switch member, and the other end is pressed against the fixed shell.

[0014] In the above-mentioned support leg for a child safety seat, the side wall of the switch member extends outward to form a connecting portion, a connecting groove is provided on the fixed shell, an activity space is formed between the connecting groove and the support body, and the connecting portion is movably arranged in the activity space.

[0015] Compared with the prior art, the advantage of the present invention lies in that a movable movable seat and a supporting body are provided on the base, and when the supporting body is stored, the movable seat is pushed to the storage position, and the supporting body is pushed to the folded position, and the end surface of the supporting body is not higher than the end surface of the base, thereby minimizing the volume of the child safety seat to the greatest extent, reducing the volume of the packaging box used for the child safety seat, reducing the space requirement for its transportation and storage, and facilitating the transportation and storage of the child safety seat, and by fixedly providing a first identification block on the supporting body and movably providing a second identification block on the supporting body with one end exposed to the outside of the supporting body, when the supporting body is placed on the floor of the vehicle, the second identification block is pushed to move between the first identification block and the observation window through the floor of the vehicle, thereby prompting whether the supporting legs are adjusted in place, thereby ensuring the normal use of the supporting legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a foldable support leg movable seat for a child safety seat of the present invention when it is in a storage position and the support body is in a folded position; Figure 2 yes Figure 1 A partial cross-sectional view of Figure 3 yes Figure 2 A three-dimensional diagram of the structure of the middle part; Figure 4 It is a three-dimensional diagram of a foldable support leg movable seat for a child safety seat of the present invention when it is in a maximum unfolded position and the support body is in a use position; Figure 5 yes Figure 4 A partial cross-sectional view of Figure 6 yes Figure 5 The three-dimensional image after removing the limit block; Figure 7 yes Figure 6 A three-dimensional diagram of the structure of the middle part; Figure 8 It is a three-dimensional diagram of the movable seat, the supporting body and the protective cover when they are connected; Fig. 9 It is a three-dimensional image of the supporting body; Fig.10 yes Fig. 9 Floor plan in ; Fig.11 yes Fig.10 Sectional view along AA direction; Fig.12 yes Fig. 9 A partial cross-sectional view of Fig.13 yes Fig. 9 A three-dimensional diagram of the central structure.

[0017] In the figure, 100, base; 110, locking hole; 200, moving seat; 210, guide tube; 220, rotating shaft; 230, limit block; 240, first torsion spring; 241, first deformation part; 242, second deformation part; 300, support body; 310, observation window; 320, first identification block; 330, second identification block; 331, identification block body; 332, pressing part; 340, third inclined surface; 350, third elastic member; 360, lifting tube; 361, clamping slot; 370, switch member; 371, connecting portion; 372, snap-fit ​​portion; 373, pressing portion; 380, fixed shell; 400, driving member; 410, driving portion; 500, moving member; 510, second inclined surface; 520, guide slot; 530, driving slot; 600, locking member; 610, main body; 611, first inclined surface; 620, latch; 630, first elastic member; 700, protective cover; 710, second torsion spring; 711, first hook; 712, second hook. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figures 1 to 13 As shown, a support leg for a child safety seat of the present invention comprises a base, and the support leg comprises: a movable seat 200 and a support body 300 .

[0020] Specifically, the movable seat 200 is movably connected to the base 100 and can move between a storage position and a maximum unfolded position on the base 100; the support body 300 is movably connected to the movable seat 200 and can move between a folded position, an unlocked position and a use position on the base 100, the unlocked position is between the folded position and the use position, and when the support body 300 is in the folded position, the end surface of the support body 300 is not higher than the end surface of the base 100; an observation window 310, a first identification block 320 and a second identification block 330 are arranged on the side of the support body 300 away from the movable seat 200, the first identification block 320 is fixed on the support body 300, the second identification block 330 is elastically connected to the support body 300 and one end is exposed at the bottom of the support body 300, and the first The identification block 320 has a first color facing the observation window 310, and the second identification block 330 has a second color facing the observation window 310, the first color and the second color are different, when the support body 300 moves to the use position and the end is pressed against the support platform, the second identification block 330 moves between the first identification block 320 and the observation window 310, and the second color can be observed through the observation window 310; the support leg has an unfolding stroke and a folding stroke; when in the unfolding stroke, either the movable seat 200 or the support body 300 can move after the support body 300 is forced to leave the folded position; when in the folding stroke, the movable seat 200 can move between the maximum unfolding position and the storage position because the support body 300 moves from the use position to or beyond the unlocking position.

[0021] Reference Figure 1 , at this time, the movable seat 200 is in the storage position and the support body 300 is fixed in the folded position. When the support legs are in the unfolding stroke and need to be supported on the floor of the vehicle, firstly, force should be applied to the support body 300 to make it leave the folded position, and then the following steps can be followed: First, the supporting body 300 is driven to move relative to the base 100 to a use position, and then the movable base 200 is driven to move relative to the base 100 to a maximum unfolded position; Alternatively, the movable seat 200 is first driven to move relative to the base 100 to the maximum extended position, and then the supporting body 300 is driven to move relative to the base 100 to the use position; Alternatively, the support body 300 and the movable base 200 move simultaneously so that the support legs are located at Figure 4 Status shown.

[0022] Similarly, when the support legs are in the folding stroke and the support body 300 needs to be pushed to the folding position and the movable seat 200 needs to be pushed to the storage position, the support body 300 needs to be pushed to the unlocking position or beyond the unlocking position to unlock the movable seat 200, and then the movable seat 200 and the support body 300 need to be pushed to the storage position and the folding position respectively.

[0023] The support body 300 can be fixed in the folded position by providing an elastic buckle on the base 100. When the support body 300 is in the folded position, the elastic buckle is fixed to the side wall of the support body 300 to fix the support body 300.

[0024] When the support body 300 is not in contact with the floor of the carriage, one end of the second identification block 330 is exposed at the bottom of the support body 300. The user can observe the first color (which can be red or other colors) through the observation window 310. When in use, the support body 300 moves to the use position and the support body 300 is pressed against the floor of the carriage. At this time, under the action of the deadweight of the supporting legs, the second identification block 330 is pushed into the support body 300 by the floor of the carriage and is located between the first identification block 320 and the observation window 310. At this time, the second color (green or any color different from the first color) can be observed through the observation window 310. When the support body 300 is not completely pressed against the floor of the carriage, the first color and the second color can be seen at the same time through the observation window 310 to remind the operator to readjust the relative position between the lifting tube 360 ​​and the fixed tube.

[0025] In the present solution, a movable movable seat 200 and a support body 300 are provided on the base 100. When the support body 300 is stored, the movable seat 200 is pushed to the storage position, and the support body 300 is pushed to the folded position, and the end surface of the support body 300 is not higher than the end surface of the base 100, so that the volume of the child safety seat is reduced to the greatest extent, the volume of the packaging box used for the child safety seat is reduced, and the space requirement for its transportation and storage is reduced, so that the transportation and storage of the child safety seat are convenient. In addition, by fixing a first identification block 320 on the support body 300 and movably providing a second identification block 330 with one end exposed to the outside of the support body 300 on the support body 300, when the support body 300 is placed on the floor of the vehicle compartment, the second identification block 330 is pushed by the floor of the vehicle compartment to move between the first identification block 320 and the observation window 310, so as to prompt whether the support legs are adjusted in place, thereby ensuring the normal use of the support legs.

[0026] In one embodiment, the base 1 further comprises: a driving member 400, which is rotatably connected to the moving seat 200 and moves synchronously with the supporting body 300; a moving member 500, which is movably arranged in the moving seat 200, and the first end of the moving member 500 is connected to the driving member 400, and is used to drive the moving member 500 to move on the moving seat 200 when the driving member 400 rotates; a locking member 600, which is elastically connected in the moving seat 200 and is drivingly connected to the second end of the moving member 500, A locking hole 110 is provided on 00, and the locking hole 110 is movably engaged with the locking member 600; when it is in the folding stroke but the support body 300 has not yet reached the unlocking position, the locking member 600 is engaged in the locking hole 110 to keep the movable seat 200 fixed; when it is in the folding stroke and the support body 300 reaches or exceeds the unlocking position, the second end of the movable member 500 pushes the locking member 600 to disengage from the locking hole 110, so that the movable seat 200 can move relative to the base 100.

[0027] Reference Figure 4 , at this time, the support body 300 is in the use position and the movable base 200 is in the maximum unfolded position. When the support legs are in the folding stroke, the support body 300 is first driven to move toward the base 100 to or beyond the unlocking position. When the support body 300 moves, the driving member 400 is first driven to move around Figure 7 When the driving member 400 rotates, it pushes the moving member 500 along Figure 7 When the moving member 500 moves, it pushes the locking member 600 to disengage from the locking hole 110, so that the moving seat 200 can move from the maximum unfolded position to the storage position.

[0028] Similarly, when the movable base 200 is in the unfolding stroke and the supporting body 300 passes the unlocking position from the folding position, the locking member 600 is re-engaged in the locking hole 110 to fix the movable base 200 in the maximum unfolding position.

[0029] In one embodiment, the locking member 600 includes: a main body 610, a first inclined surface 611 is provided on the main body 610, a second inclined surface 510 is provided on the moving member 500, and the second inclined surface 510 is movably pressed against the first inclined surface 611. When the moving member 500 moves on the moving seat 200, the first inclined surface 611 and the second inclined surface 510 push the locking member 600 to separate from the locking hole 110; a latch 620, which is connected to the main body 610, and the second end of the moving member 500 is provided with a guide sleeved on the outside of the latch 620. The guide groove 520 is used to provide a guide for the movement of the locking member 600, and the latch 620 is movably inserted in the locking hole 110; the first elastic member 630, the movable seat 200 includes a guide tube 210, the guide tube 210 is fixed on the movable seat 200, and one end of the guide tube 210 away from the movable seat 200 is movably inserted in the base 100, the first elastic member 630 is arranged in the guide tube 210, one end of the first elastic member 630 is pressed against the inner wall of the guide tube 210, and the other end is pressed against the main body 610.

[0030] When the moving member 500 moves on the moving seat 200, the locking member 600 is pushed to separate from the locking hole 110 by the first inclined surface 611 and the second inclined surface 510. Preferably, there are two first inclined surfaces 611 and the second inclined surfaces 510, which are respectively arranged on both sides of the locking member 600 to prevent the locking member 600 from tilting when the moving member 500 pushes the locking member 600 to separate from the locking hole 110.

[0031] Reference Figure 5 and Figure 7 At this time, the locking member 600 is engaged with the locking hole 110 to fix the movable seat 200 in the maximum unfolded position. Figure 7 When the moving member 500 moves from right to left, the second inclined surface 510 on the moving member 500 pushes the locking member 600 along the first inclined surface 611. Figure 7 Move from outside to inside to disengage the locking member 600 from the locking hole 110 .

[0032] Reference Figure 7 When the moving member 500 pushes the locking member 600 to disengage from the locking hole 110, the first elastic member 630 is compressed and stores energy by the pressure from the locking member 600. After the moving member 500 moves in the opposite direction and removes the force applied to the locking member 600, the first elastic member 630 pushes the locking member 600 to re-engage the locking hole 110. The guide tube 210 is used for connecting the locking member 600 and the first elastic member 630 to the moving seat 200. Preferably, the first elastic member 630 is a spring.

[0033] The main body 610 and the latch 620 may be integrally formed or separately provided. The guide groove 520 is used to guide the locking member 600 when it moves, and can also provide a clearance for the relative displacement of the locking member 600 and the locking hole 110 when the moving member 500 moves relative to the locking member 600.

[0034] In one embodiment, a rotating shaft 220 and a limit block 230 are provided on the moving seat 200. The support body 300 is rotatably connected to the moving seat 200 via the rotating shaft 220. The driving member 400 is connected to one end of the rotating shaft 220 to drive the driving member 400 to move on the moving seat 200 when the support body 300 rotates. The limit block 230 is fixed on the moving seat 200. When the support body 300 moves to the use position, the limit block 230 is tightly pressed against the end of the support body 300 to provide a limit for the support body 300.

[0035] Reference Figure 6 The rotating shaft 220 is rotatably disposed on the moving base 200 , and the supporting body 300 is fixedly connected to the rotating shaft 220 . When the supporting body 300 drives the rotating shaft 220 to rotate relative to the moving base 200 , the driving member 400 is driven to rotate.

[0036] Reference Figure 5 and Figure 6 At this time, the support body 300 is in the use position. After the support body 300 moves from the folded position to the use position, the upper end of the support body 300 is pressed against the limit block 230 to prevent the support body 300 from continuing to move along the unfolding direction, thereby ensuring the correctness of the support body 300 moving to the use position.

[0037] In one embodiment, a driving groove 530 is provided at the first end of the movable member 500, and a driving portion 410 whose center line is not colinear with the rotation center line of the rotating shaft 220 is provided on the driving member 400. The driving portion 410 is movably inserted in the driving groove 530 to drive the movable member 500 to move when the driving member 400 rotates.

[0038] The driving part 410 whose center line is not colinear with the center line of the rotating shaft 220 is used to set an eccentric structure on the driving member 400. In this way, when the rotating shaft 220 drives the driving member 400 to rotate, the driving part 410 can drive the moving member 500 to move through the driving slot 530.

[0039] In one embodiment, a first torsion spring 240 is sleeved on the outer side of the rotating shaft 220, and a first deformation portion 241 and a second deformation portion 242 are provided on the first torsion spring 240. The first deformation portion 241 is connected to the movable seat 200, and the second deformation portion 242 is pressed against the support body 300. When the support body 300 moves to the folded position, the second deformation portion 242 is driven to approach the first deformation portion 241, so as to compress the first torsion spring 240 and store energy.

[0040] The first torsion spring 240 and the first deformation part 241 and the second deformation part 242 thereon are arranged to ensure that the support body 300 is always subjected to the thrust from the first torsion spring 240 at any position. When the support body 300 is in the folded position, the thrust of the first torsion spring 240 on the support body 300 and the pressing force of the base 100 on the support body 300 act together to fix the support body 300 in the folded position, thereby preventing the support body 300 from shaking relative to the base 100 during transportation of the child safety seat. Furthermore, after the support body 300 is out of the folded position, the first torsion spring 240 stretches and pushes the support body 300 to move to the use position.

[0041] In one embodiment, a protective cover 700 is rotatably disposed on the movable base 200 , and the protective cover 700 moves synchronously with the supporting body 300 to cover the end of the supporting body 300 when the supporting body 300 moves to the folded position.

[0042] Reference Figure 1 , Figure 5 and Figure 8 A second torsion spring 710 is provided between the protective cover 700 and the movable base 200 for the protective cover 700 and the supporting body 300 to move synchronously. The second torsion spring 710 has a first hook 711 and a second hook 712. The first hook 711 is fixed on the protective cover 700, and the second hook 712 is fixed on the movable base 200. When the supporting body 300 is in Figure 5 In the use position shown in FIG. 1 , under the action of the support body 300, the distance between the first hook 711 and the second hook 712 is pulled apart, so that the second torsion spring 710 is in an elastic energy storage state. When the support body 300 moves from the use position to the folded position, the second torsion spring 710 pushes the protective cover 700 to move synchronously with the support body 300 until the support body 300 reaches the position of the first hook 711 and the second hook 712. Figure 1 In the state shown, the protective cover 700 covers the end of the supporting body 300 to prevent the user's fingers from being inserted between the supporting body 300 and the movable base 200 and causing injuries.

[0043] In one embodiment, the second identification block 330 includes an identification block body 331 and a tightening portion 332 connected to the end of the identification block body 331, a third inclined surface 340 is arranged in the support body 300, the identification block body 331 and the third inclined surface 340 are movably abutted against each other, the tightening portion 332 passes through the bottom end surface of the support body 300, a second elastic member is arranged in the support body 300, and the second elastic member is connected between the support body 300 and the second identification block 330.

[0044] The identification block body 331 is used to realize the connection between the second identification block 330 and the support body 300. Preferably, the connection between the identification block body 331 and the support body 300 can be realized by a snap-in connection, or by a threaded connection, or by both a snap-in connection and a threaded connection. The first inclined surface 611 is used to provide support and limitation for the second identification block 330 when the second identification block 330 moves to abut against it.

[0045] Preferably, the elastic connection between the second identification block 330 and the supporting body 300 can be realized by making the second identification block 330 from an elastic material, or by arranging a second elastic member between the second identification block 330 and the supporting body 300. That is, before the supporting body 300 contacts the vehicle floor, one end of the second identification block 330 is exposed to the outside of the supporting body 300 by means of the elastic force of the second elastic member; after the supporting body 300 is pressed against the vehicle floor, the elastic force of the second elastic member is overcome to compress the second elastic member so that the end of the second identification block 330 can be retracted into the supporting body 300; when the supporting body 300 is separated from the vehicle floor again, the second elastic member stretches and pushes the second identification block 330 to reset.

[0046] In one embodiment, it also includes: a lifting tube 360, which is movably connected to the support body 300 and has a fixed state and a movable state; a switch member 370, which is movably connected between the support body 300 and the lifting tube 360 ​​and is movably engaged with the lifting tube 360. When the switch member 370 is engaged with the lifting tube 360, the lifting tube 360 ​​is in a fixed state. When the switch member 370 is disengaged from the lifting tube 360, the lifting tube 360 ​​is in an active state; a fixed shell 380, which is connected to the support body 300 and forms a fixed space with the support body 300. The switch member 370 is movably connected in the fixed space; a third elastic member 350, which is connected in the fixed space. One end of the third elastic member 350 is pressed against the switch member 370, and the other end is pressed against the fixed shell 380.

[0047] The movable connection between the lifting tube 360 ​​and the supporting body 300 can be realized by movably inserting the lifting tube 360 ​​into the supporting body 300. In this case, the observation window, the first identification block 320 and the second identification block 330 are all connected to the end of the lifting tube 360. Of course, the movable connection between the lifting tube 360 ​​and the supporting body 300 can also be realized by inserting the supporting body 300 into the lifting tube 360. In this case, the observation window, the first identification block 320 and the second identification block 330 are connected to the end of the supporting body 300. The switch member 370 is used to realize the locking and unlocking between the lifting tube 360 ​​and the supporting body 300, so as to realize the height adjustment between the lifting tube 360 ​​and the supporting body 300.

[0048] Preferably, the lifting tube 360 ​​is provided with a plurality of clamping grooves 361 along its length direction, a clamping portion 372 is provided at one end of the switch member 370, and a pressing portion 373 is provided at the other end of the switch member 370, the clamping portion 372 is movably clamped with any one of the clamping grooves 361, the pressing portion 373 passes through the outer wall of the support body 300 and is exposed to the outside of the support body 300, and is used to drive the clamping portion 372 to disengage from the clamping groove 361; the lifting tube 360 ​​can be in a fixed state due to the clamping portion 372 being clamped in the clamping groove 361, and can be in an active state due to the force applied to the pressing portion 373 to disengage the clamping portion 372 from the clamping groove 361.

[0049] Reference Fig.12 and Fig.13 , at this time, the clamping portion 372 is clamped with a clamping groove 361 at the bottom of the lifting tube 360. When the pressing portion 373 is pressed, the pressing portion 373 on the upper part of the switch member 370 moves toward one side of the lifting tube 360, and the clamping portion 372 moves toward the side away from the lifting tube 360, so that the clamping portion 372 is separated from the clamping groove 361. At this time, after adjusting the relative position between the lifting tube 360 ​​and the supporting body 300, release the force on the pressing portion 373, so that the clamping portion 372 is clamped into another clamping groove 361, and the position adjustment between the lifting tube 360 ​​and the supporting body 300 is completed.

[0050] The fixing shell 380 is used to fix the switch member 370 between the lifting tube 360 ​​and the supporting body 300. When the clamping portion 372 is clamped into the clamping groove 361, the third elastic member 350 applies a thrust to the pressing portion 373, so that the switch member 370 is always kept in the state of fixing the lifting tube 360. After the relative position between the lifting tube 360 ​​and the supporting body 300 is adjusted and the pressure applied to the pressing portion 373 is released, the third elastic member 350 pushes the switch member 370 to return to its original position.

[0051] In one embodiment, the side wall of the switch member 370 extends outward to form a connecting portion 371, and a connecting groove is provided on the fixed shell 380. A movable space is formed between the connecting groove and the supporting body 300, and the connecting portion 371 is movably arranged in the movable space.

[0052] Preferably, the connecting groove includes a convex portion and a fourth inclined surface arranged on one side of the convex portion and inclined with the convex portion, the connecting portion 371 is provided with a concave portion and a fifth inclined surface arranged on one side of the concave portion and inclined with the concave portion, the convex portion and the concave portion are movably abutted against each other to provide a fulcrum for the movement of the switch member 370 in the activity space, and the fourth inclined surface and the fifth inclined surface are movably abutted against each other to provide a limit for the switch member 370.

[0053] When the pressing portion 373 is subjected to force, the switch member 370 uses the contact point between the convex portion and the concave portion as a fulcrum for the movement of the switch member 370, so that the fifth inclined surface is pressed against the fourth inclined surface, and when the fifth inclined surface is pressed against the fourth inclined surface, the continued movement of the switch member 370 is restricted.

[0054] 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, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] 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 the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] 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 in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A support leg for a child safety seat, the child safety seat comprising a base, characterized in that: The supporting legs include: A movable seat, which is movably connected to the base and can move between a storage position and a maximum deployment position on the base; a support body, which is movably connected to the movable seat and can move between a folding position, an unlocking position and a use position on the base, wherein the unlocking position is located between the folding position and the use position, and when the support body is located at the folding position, an end surface of the support body is not higher than an end surface of the base; an observation window, a first identification block, and a second identification block arranged on a side of the support body away from the moving seat, wherein the first identification block is fixed to the support body, the second identification block is elastically connected to the support body and one end of the second identification block is exposed at the bottom of the support body, the first identification block has a first color facing the observation window, the second identification block has a second color facing the observation window, the first color and the second color are different, and when the support body moves to the use position and the end portion is pressed against the support platform, the second identification block moves between the first identification block and the observation window, and the second color can be observed through the observation window; The support leg has an unfolding stroke and a folding stroke; When in the unfolding stroke, any one of the movable seat and the supporting body can move after the supporting body is forced to leave the folded position; When in the folding stroke, the movable seat can move between the maximum unfolded position and the storage position because the support body moves from the use position to or beyond the unlocking position.

2. A support leg for a child safety seat as claimed in claim 1, characterized in that: Also includes: A driving member, which is rotatably connected to the moving seat and moves synchronously with the supporting body; A moving member, which is movably disposed in the moving seat, and a first end of the moving member is connected to the driving member, and is used to drive the moving member to move on the moving seat when the driving member rotates; A locking member, which is elastically connected in the movable seat and is drivingly connected to the second end of the movable member, and a locking hole is provided on the base, and the locking hole is movably engaged with the locking member; When the support body is in the folding stroke but has not yet reached the unlocking position, the locking member is engaged in the locking hole to keep the movable seat fixed; When the supporting body is in the folding stroke and reaches or exceeds the unlocking position, the second end of the moving member pushes the locking member to disengage from the locking hole, so that the moving seat can move relative to the base.

3. A support leg for a child safety seat as claimed in claim 2, characterized in that: The locking member comprises: A main body, wherein a first inclined surface is arranged on the main body, and a second inclined surface is arranged on the moving member, wherein the second inclined surface is movably pressed against the first inclined surface, and when the moving member moves on the moving seat, the first inclined surface and the second inclined surface push the locking member to separate from the locking hole; A latch connected to the main body, a second end of the movable member is provided with a guide groove sleeved on the outer side of the latch, the guide groove is used to provide a guide for the movement of the locking member, and the latch is movably inserted in the locking hole; The first elastic member, the movable seat includes a guide tube, the guide tube is fixed on the movable seat, and one end of the guide tube away from the movable seat is movably inserted in the base, the first elastic member is arranged in the guide tube, one end of the first elastic member is pressed against the inner wall of the guide tube, and the other end is pressed against the main body.

4. A support leg for a child safety seat as claimed in claim 2, characterized in that: The movable seat is provided with a rotating shaft and a limit block, the supporting body is rotatably connected to the movable seat via the rotating shaft, the driving member is connected to one end of the rotating shaft, and is used to drive the driving member to move on the movable seat when the supporting body rotates, and the limit block is fixed on the movable seat, and when the supporting body moves to the use position, the limit block is tightly pressed against the end of the supporting body to provide a limit for the supporting body.

5. A support leg for a child safety seat as claimed in claim 4, characterized in that: A driving groove is provided at the first end of the movable member, and a driving part is provided on the driving member, the center line of which is not colinear with the rotation center line of the rotating shaft. The driving part is movably inserted in the driving groove to drive the movable member to move when the driving member rotates.

6. A support leg for a child safety seat as claimed in claim 5, characterized in that: A first torsion spring is sleeved on the outer side of the rotating shaft, and a first deformation part and a second deformation part are arranged on the first torsion spring. The first deformation part is connected to the movable seat, and the second deformation part is pressed against the supporting body. When the supporting body moves to the folded position, the second deformation part is driven to approach the first deformation part, so as to compress the first torsion spring and store energy.

7. A support leg for a child safety seat as claimed in claim 1, characterized in that: A protective cover is rotatably arranged on the movable seat, and the protective cover moves synchronously with the supporting body, so as to cover the end of the supporting body when the supporting body moves to the folding position.

8. A support leg for a child safety seat as claimed in claim 1, characterized in that: The second identification block includes an identification block body and a tightening portion connected to the end of the identification block body, a third inclined surface is arranged in the support body, the identification block body movably abuts against the third inclined surface, the tightening portion passes through the bottom end surface of the support body, a second elastic member is arranged in the support body, and the second elastic member is connected between the support body and the second identification block.

9. A support leg for a child safety seat as claimed in claim 1, characterized in that: Also includes: A lifting tube, which is movably connected to the supporting body and has a fixed state and a movable state; a switch member, which is movably connected between the support body and the lifting tube and is movably engaged with the lifting tube. When the switch member is engaged with the lifting tube, the lifting tube is in the fixed state. When the switch member is disengaged from the lifting tube, the lifting tube is in the active state. A fixed shell, which is connected to the supporting body and forms a fixed space with the supporting body, and the switch element is movably connected in the fixed space; A third elastic member is connected in the fixed space, one end of the third elastic member is pressed against the switch member, and the other end is pressed against the fixed shell.

10. A support leg for a child safety seat as claimed in claim 9, 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, an active space is formed between the connecting groove and the supporting body, and the connecting portion is movably arranged in the active space.

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