CN107839554B

CN107839554B - Child seat supporting leg structure and child seat supporting seat

Info

Publication number: CN107839554B
Application number: CN201610834388.4A
Authority: CN
Inventors: 苍安国; 刘修平
Original assignee: Zhuhai Hongdian Technology Co ltd
Current assignee: Zhuhai Hongdian Technology Co ltd
Priority date: 2016-09-19
Filing date: 2016-09-19
Publication date: 2024-06-28
Anticipated expiration: 2036-09-19
Also published as: CN107839554A

Abstract

The invention relates to a child seat support leg structure and a child seat support seat, wherein the child seat support leg structure comprises a safety locking mechanism and at least two-stage telescopic legs, the safety locking mechanism is arranged between any one or more groups of adjacent two-stage telescopic legs in the at least two-stage telescopic legs, the safety locking mechanism comprises a flexible belt, the flexible belt bypasses the adjacent two-stage telescopic legs and can be pulled out along with the relative shrinkage of the adjacent two-stage telescopic legs, and when the instantaneous acceleration of the pulled-out flexible belt reaches a preset acceleration, the safety locking mechanism can lock the flexible belt so as to limit the relative shrinkage between the adjacent two-stage telescopic legs through the flexible belt. According to the invention, the safety locking mechanism is arranged, so that when the instantaneous acceleration of the flexible belt pulled out reaches the preset acceleration due to the emergency braking and other conditions of the vehicle, the flexible belt is locked through the safety locking mechanism, so that the relative contraction between two adjacent telescopic legs is limited, the occurrence of accidents such as the tipping of the child seat is reduced, and the safety is improved.

Description

Child seat supporting leg structure and child seat supporting seat

Technical Field

The invention relates to the technical field of child safety seats, in particular to a child seat support leg structure and a child seat support seat.

Background

Child safety seats are seats that effectively improve the safety of children riding by restraining the child within the safety seat. In the event of a car crash or sudden deceleration, the seat may reduce the impact on the child and limit the child's body movement, thereby alleviating injury to them. Among the currently existing child safety seats, the child safety seat based on the ISOFIX interface of the european mandatory standard is widely used.

Considering that the height difference exists between the plane of the vehicle seat and the bottom surface in the vehicle, the connection of the ISOFIX interface is difficult to bear the pressure from the collision or sudden deceleration of the vehicle, so that the front end of the supporting seat of the child installation seat is provided with supporting legs for supporting more stably, so that reliable support is formed with the bottom surface in the vehicle, and the safety protection effect of the child seat is improved. Currently, when a child safety seat is mounted on an automobile seat, it is first necessary to mount a child seat support base and form a stable support for the child safety seat by support legs.

On the other hand, considering that the child safety seat itself occupies a large space, in general, when the child safety seat is not required to be used, a user often needs to detach and fold the child safety seat, and then install the child safety seat when the child safety seat is required to be used. This in turn requires that the support base be able to collapse or fold. When installing existing child seat supports, a user often needs multiple steps, including placing the support on the vehicle seat surface, reconnecting the ISOFIX interface, then operating the telescoping button on the support leg to extend the support leg to a suitable length, and then releasing the telescoping button to lock the support leg. The whole installation process is complicated, and a certain use experience is required for a user. For inexperienced or careless users, the supporting legs can be not adjusted in place and cannot well abut against the ground, or the telescopic buttons cannot be locked correctly, so that the supporting legs are in a telescopic state, when a vehicle encounters an emergency and needs sudden braking, the supporting legs can be accidentally contracted, unbalance of the supporting seat is caused, accidents such as tilting of the child seat can be caused, and certain potential safety hazards exist.

It should be noted that the information disclosed in the background section of the present invention is only for increasing the understanding of the general background of the present invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a child seat support leg structure and a child seat support seat so as to improve the safety of a child seat as much as possible.

In order to achieve the above object, the present invention provides a child seat leg structure including a safety locking mechanism and at least two stages of telescopic legs, the safety locking mechanism being provided between any one or more adjacent two stages of telescopic legs of the at least two stages, the safety locking mechanism including a flexible strap which bypasses the adjacent two stages of telescopic legs and can be pulled out with relative contraction of the adjacent two stages of telescopic legs, the safety locking mechanism being capable of locking the flexible strap when an instantaneous acceleration at which the flexible strap is pulled out reaches a preset acceleration so as to restrict the relative contraction between the adjacent two stages of telescopic legs by the flexible strap.

Further, the safety locking mechanism further includes at least one retractor provided on one of the adjacent two-stage telescopic legs and allowing the flexible strap led out by the retractor to bypass the adjacent two-stage telescopic legs so that the retractor can retract the flexible strap when the adjacent two-stage telescopic legs are relatively extended and pull out the flexible strap when the adjacent two-stage telescopic legs are relatively contracted.

Further, the at least one retractor comprises a first retractor and a second retractor, the two adjacent telescopic legs comprise an outer telescopic leg and an inner telescopic leg, the inner telescopic leg is inserted into the outer telescopic leg, the inner telescopic leg and the outer telescopic leg can move relatively, the first retractor and the second retractor are respectively arranged at two sides in the outer telescopic leg, the flexible belt comprises a strip, and two ends of the flexible belt are respectively led into the corresponding first retractor and the second retractor; or the flexible belt comprises two flexible belts, one ends of the two flexible belts are connected with each other, and the other ends of the two flexible belts are respectively introduced into the corresponding first retractor and the second retractor.

Further, the at least one retractor comprises a first retractor, the two adjacent telescopic legs comprise an outer telescopic leg and an inner telescopic leg, the inner telescopic leg is embedded into the outer telescopic leg, the inner telescopic leg and the outer telescopic leg can move relatively, the first retractor is arranged on one side in the outer telescopic leg, and the flexible belt is led out from the first retractor, bypasses the outer telescopic leg and the inner telescopic leg and is connected with a fixed point arranged on the other side in the outer telescopic leg.

Further, the retractor is a seatbelt retractor for use on an automobile seatbelt.

Further, the guide structures used for the flexible belts to bypass are arranged on the two adjacent telescopic legs, so that the movement route of the flexible belts can be guided, and interference and friction between the flexible belts and the two adjacent telescopic legs are avoided.

Further, the adjacent two-stage telescopic leg comprises an outer-layer telescopic leg and an inner-layer telescopic leg, the inner-layer telescopic leg is inserted into the outer-layer telescopic leg and can move relatively with the outer-layer telescopic leg, the guide structure comprises a first rod group and a second rod group, the first rod group is arranged on the outer-layer telescopic leg, the second rod group is arranged on the inner-layer telescopic leg, and the first rod group and the second rod group guide the bypassing flexible belt.

Further, the first rod group comprises a first rod piece and a second rod piece, a first cavity for accommodating the inner telescopic leg is formed in the outer telescopic leg, and the first rod piece and the second rod piece are symmetrically arranged on two sides outside the first cavity relative to the central axis of the inner telescopic leg; and/or, the second rod group comprises a third rod piece and a fourth rod piece, the third rod piece and the fourth rod piece are symmetrically arranged at the first end of the inner-layer telescopic leg relative to the central axis of the inner-layer telescopic leg, and the first end of the inner-layer telescopic leg is the end, which is closer to the outer-layer telescopic leg, of the inner-layer telescopic leg when the inner-layer telescopic leg extends out relative to the outer-layer telescopic leg.

Further, the first end of the inner telescopic leg is further provided with a fifth rod, the fifth rod is arranged between the third rod and the fourth rod, so that the flexible belt sequentially bypasses the third rod, the fifth rod and the fourth rod, the fifth rod is located at the first side of the flexible belt, and the third rod and the fourth rod are located at the second side of the flexible belt.

Further, the first rod, the second rod, the third rod, the fourth rod and the fifth rod are rotatable rotation shafts.

Further, the telescopic leg comprises a limiting mechanism, wherein the limiting mechanism is used for limiting the extension length of the inner telescopic leg relative to the outer telescopic leg, so that the third rod piece and the fourth rod piece are always far away from the first end of the outer telescopic leg than the first rod piece and the second rod piece, and the first end of the outer telescopic leg is the end, close to the inner telescopic leg, of the outer telescopic leg when the outer telescopic leg extends relative to the inner telescopic leg.

Further, the limiting mechanism comprises a limiting column arranged on one of the outer layer telescopic legs and the inner layer telescopic legs and a limiting groove arranged on the other of the outer layer telescopic legs and the inner layer telescopic legs, and the limiting column is embedded into the limiting groove so as to limit the relative movement range of the outer layer telescopic legs and the inner layer telescopic legs through the limiting groove.

Further, the device also comprises a detection mechanism, wherein the detection mechanism is used for detecting the instantaneous acceleration of the flexible belt when the flexible belt is pulled out, and the detection mechanism is in signal connection with the safety locking mechanism so that the safety locking mechanism locks the flexible belt according to the detection signal of the detection mechanism.

Further, the lower one of the adjacent two-stage telescopic legs can be extended with respect to the upper other one of the adjacent two-stage telescopic legs by means of its own weight.

In order to achieve the above objective, the present invention further provides a child seat support base, which includes the above child seat leg structure.

Based on the technical scheme, the safety locking mechanism comprising the flexible belt is arranged, so that when the instantaneous acceleration of the flexible belt pulled out reaches the preset acceleration due to the emergency braking and other conditions of the vehicle, the flexible belt can be locked through the safety locking mechanism, the relative shrinkage between two adjacent telescopic legs is limited, the accidental shrinkage of the leg structures is avoided, the balance of the supporting seat is influenced, the occurrence of accidents such as the overturning of the child seat is reduced, and the safety of the child seat is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of a leg structure of a child seat according to an embodiment of the present invention mounted on a support base.

Fig. 2 is an exploded view of the embodiment of fig. 1.

Fig. 3 is a right side view of the embodiment of fig. 1.

Fig. 4 is a cross-sectional view of section A-A of fig. 3.

Fig. 5 is an enlarged view of a portion indicated by reference numeral P in fig. 4.

FIG. 6 is a front view of an outer telescoping leg in one embodiment of the child seat leg structure of the present invention.

Fig. 7 is a cross-sectional view of section B-B of fig. 6.

Fig. 8 is a left side view of the outer telescoping leg of the embodiment of fig. 6.

Fig. 9 is a cross-sectional view of section C-C of fig. 8.

FIG. 10 is a top view of an inner telescoping leg in one embodiment of the child seat leg structure of the present invention.

Fig. 11 is a front view of the inner telescoping leg of the embodiment of fig. 10.

In the figure: the novel multifunctional seat comprises a 101-backrest, a 102-supporting seat body, a 1-flexible belt, a 2-retractor, a 3-outer telescopic leg, a 4-inner telescopic leg, a 5-first rod piece, a 6-second rod piece, a 7-third rod piece, an 8-fourth rod piece, a 9-fifth rod piece, a 10-fixed rod, an 11-limit column, a 12-limit groove, a 13-telescopic leg base, a 31-first chamber, a 32-second chamber and a 33-third chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

In order to improve the safety of the child seat, the invention provides an improved child seat support leg structure. As shown in fig. 1, which is a schematic structural diagram of an embodiment of the leg structure of the child seat according to the present invention, the child seat support base includes a backrest 101 and a support base body 102, and a leg structure of the child seat is disposed at a bottom of one side of the support base body 102, and is in contact with an inner bottom surface of an automobile, so as to form a stable triangular support structure together with two ISOFIX interfaces on the automobile seat, so as to ensure balance, stability and safety of the child seat.

As shown in fig. 2, which is an exploded view of the installation of the leg structure of the child seat, the leg structure of the child seat may be installed on the bottom surface of the supporting seat body 102 through a hinge shaft, and the leg structure of the child seat may be rotated with respect to the bottom surface of the supporting seat body 102 to facilitate the folding of the leg structure.

The child seat leg structure includes at least two stages of telescoping legs to achieve extension or shortening of the leg structure. The leg structure may be shortened when folded to the bottom surface of the support base body 102, and may be lengthened when folded to contact the bottom surface of the vehicle interior, as desired. The connection between the telescopic legs of each stage can take many forms, as long as the relative extension or shortening between the adjacent two stages of telescopic legs can be achieved.

The lower one of the two adjacent telescopic legs can extend out relative to the upper other one of the two adjacent telescopic legs by means of self gravity. For example, on the last stage of telescopic leg of children's seat landing leg structure, the tip of the telescopic leg that contacts each other with the bottom surface in the car promptly can set up telescopic leg base 13, and this telescopic leg base 13 can increase the area of contact of landing leg structure and bottom surface in the car, can also increase the weight of the telescopic leg of last stage to make the landing leg structure when the extension, can make the telescopic leg of last stage rely on self gravity to stretch out for the telescopic leg of last stage for the extension of landing leg structure more convenient and fast.

As can be seen from the sectional view of section A-A in fig. 3 and the enlarged view in fig. 5 shown in fig. 4, the child seat leg structure further includes a safety locking mechanism provided between any one or more of the adjacent two-stage telescopic legs of the at least two-stage telescopic legs, the safety locking mechanism includes a flexible strap 1, the flexible strap 1 is led out from the safety locking mechanism to bypass the adjacent two-stage telescopic legs, and the flexible strap 1 can be pulled out along with the relative contraction of the adjacent two-stage telescopic legs, and the safety locking mechanism can lock the flexible strap 1 when the instantaneous acceleration of the pulling-out of the flexible strap 1 reaches a preset acceleration so as to limit the relative contraction between the adjacent two-stage telescopic legs by the flexible strap 1.

Through setting up the safety locking mechanism including flexible area 1 for when the vehicle takes place conditions such as emergency brake and makes the instantaneous acceleration that flexible area 1 was pulled out reach the acceleration of predetermineeing, can lock the flexible area through this safety locking mechanism, with the relative shrink between the flexible leg of restriction adjacent two-stage, avoid the unexpected shrink of landing leg structure, influence the equilibrium of supporting seat, reduce the emergence of accidents such as children's seat roll-over, improve children's seat's security.

The instantaneous acceleration of the flexible belt 1 when pulled out can be detected by a detection mechanism, such as an acceleration sensor, arranged on the leg structure of the child seat, and the detection mechanism is in signal connection with the safety locking mechanism, so that the safety locking mechanism locks the flexible belt 1 according to the detection signal of the detection mechanism.

The child seat leg structure can be further provided with a controller to judge the detection result of the detection mechanism, and when the instantaneous acceleration of the flexible belt 1 is larger than or equal to the preset acceleration, the controller sends a signal for locking the flexible belt 1 to the safety locking mechanism; when the instantaneous acceleration of the flexible belt 1 when pulled out is smaller than the preset acceleration, the controller does not send a signal to the safety locking mechanism, and the flexible belt 1 can be pulled out normally. Of course, the controller may be used with a child seat or a controller having other functions in an automobile as long as the function is achieved.

In the above embodiments, the safety locking mechanism locks the flexible belt 1 only when the leg structure of the child seat is contracted too fast, that is, the instantaneous acceleration of the flexible belt 1 being pulled out reaches the preset acceleration, so that the leg structure cannot be contracted by limiting the flexible belt 1 to be pulled out continuously, thereby reducing or eliminating the risk of the child seat tipping forward; when the child seat leg structure is extended, namely the flexible belt 1 is retracted, the safety locking mechanism cannot lock the flexible belt 1 no matter how the retraction acceleration is, so that the child seat leg structure can be normally extended.

Further, the safety locking mechanism further comprises at least one retractor 2, wherein the retractor 2 is arranged on one stage of telescopic leg in the adjacent two stages of telescopic legs, and the flexible belt 1 led out by the retractor 2 bypasses the adjacent two stages of telescopic legs, so that the retractor 2 can retract the flexible belt 1 when the adjacent two stages of telescopic legs are extended relatively, and pull out the flexible belt 1 when the adjacent two stages of telescopic legs are retracted relatively.

In one embodiment of the leg structure of the child seat, at least one retractor 2 comprises a first retractor and a second retractor, two adjacent telescopic legs comprise an outer telescopic leg 3 and an inner telescopic leg 4, the inner telescopic leg 4 is inserted into the outer telescopic leg 3, and the inner telescopic leg 4 and the outer telescopic leg 3 can move relatively, the first retractor and the second retractor are respectively arranged at two sides in the outer telescopic leg 3, the flexible belt 1 comprises a strip, and two ends of the flexible belt 1 are respectively led into the corresponding first retractor and the second retractor; or the flexible belt 1 comprises two flexible belts 1, one ends of the two flexible belts 1 are connected with each other, and the other ends of the two flexible belts are respectively led into the corresponding first retractor and the second retractor.

In another embodiment of the leg structure of the child seat, as shown in fig. 5, at least one retractor 2 comprises a first retractor, two adjacent telescopic legs comprise an outer telescopic leg 3 and an inner telescopic leg 4, the inner telescopic leg 4 is embedded in the outer telescopic leg 3 and the inner telescopic leg 4 and the outer telescopic leg 3 can move relatively, the first retractor is arranged on one side in the outer telescopic leg 3, and the flexible belt 1 is led out from the first retractor, bypasses the outer telescopic leg 3 and the inner telescopic leg 4 and is connected with a fixed point arranged on the other side in the outer telescopic leg 3.

The fixing point can be provided with a fixing rod 10, and the flexible band 1 can be connected to the fixing rod 10 after bypassing the outer telescopic leg 3 and the inner telescopic leg 4.

Preferably, the retractor 2 is a seat belt retractor for use on an automotive seat belt. Since the seatbelt retractor has been a mature product, the seatbelt retractor directly employing the automobile seatbelt can reduce design and manufacturing costs.

Of course, the retractor 2 may be any other structure having the above function, or a self-made structure having the above function.

In a preferred embodiment of the leg structure of the child seat, the adjacent two-stage telescopic legs are provided with guide structures for the flexible belt 1 to bypass, so that the movement route of the flexible belt 1 can be guided to avoid interference and friction between the flexible belt 1 and the adjacent two-stage telescopic legs.

As shown in fig. 6 and 8, which are front and left views of the outer telescopic leg 3, respectively, and as shown in fig. 7 and 9, which are cross-sectional views of the outer telescopic leg 3 along different sections, the outer telescopic leg 3 is a box structure including a first chamber 31 and second and third chambers 32 and 33 located at both sides of the first chamber 31, wherein the retractor 2 and the fixing rod 10 may be disposed in the second and third chambers 32 and 33, respectively, and the inner telescopic leg 4 may be inserted into the first chamber 31, i.e., the first chamber 31 may be capable of accommodating the inner telescopic leg 4, and the width of the first chamber 31 may be matched with the width of the inner telescopic leg 4, so that the first chamber 31 may limit and guide the movement of the inner telescopic leg 4.

As shown in fig. 10 and 11, the inner telescoping leg 4 is seen from the top and front. Both sides of the inner telescoping leg 4 may be provided with groove structures to prevent interference with other structures within the first chamber 31 of the outer telescoping leg 3.

The extension of the leg structure of the child seat may be achieved by moving the inner telescoping leg 4 relative to the outer telescoping leg 3, or by moving the outer telescoping leg 3 relative to the inner telescoping leg 4.

In addition, as shown in fig. 1 to 4, the outer telescopic leg 3 is located close to the support base body 102, the inner telescopic leg 4 is located away from the support base body 102, and in other embodiments, the outer telescopic leg 3 may be located away from the support base body 102, and the inner telescopic leg 4 may be located close to the support base body 102.

As a preferred embodiment of the guide structure, the guide structure includes a first rod group provided on the outer-layer telescopic leg 3 and a second rod group provided on the inner-layer telescopic leg 4, through which the bypassed flexible band 1 is guided.

The rod pieces in the first rod group and the second rod group can be round rods or rods with other shapes.

As shown in fig. 5, the first rod group includes a first rod 5 and a second rod 6, and the first rod 5 and the second rod 6 are symmetrically disposed on both sides outside the first chamber 31 with respect to the central axis of the inner telescopic leg 4. The symmetrical arrangement of the first rod piece 5 and the second rod piece 6 can ensure the stability of the flexible belt 1 in the telescoping process, so that the force born by the inner telescopic leg 4 is symmetrical, and the inner telescopic leg 4 can move along a straight line relative to the outer telescopic leg 3.

The two sides of the bottom of the first chamber 31 are respectively provided with a hole for the flexible belt 1 to pass through, and the first rod 5 and the second rod 6 are arranged at positions close to the side surface of the first chamber 31, so that the size of the holes for the flexible belt 1 to pass through, which are formed in the first chamber 31, can be reduced as far as possible.

The second rod group comprises a third rod piece 7 and a fourth rod piece 8, wherein the third rod piece 7 and the fourth rod piece 8 are symmetrically arranged at the first end of the inner telescopic leg 4 relative to the central axis of the inner telescopic leg 4, and the first end of the inner telescopic leg 4 is the end, which is closer to the outer telescopic leg 3, of the inner telescopic leg 4 when the inner telescopic leg extends out relative to the outer telescopic leg 3.

Preferably, the third rod 7 and the fourth rod 8 are disposed near the side of the first chamber 31, so that the angle between the flexible strap 1 wound between the first rod 5 and the third rod 7 and between the second rod 6 and the fourth rod 8 is small relative to the vertical direction, thereby avoiding the movement track of the flexible strap 1 from the side wall of the first chamber 31, and further avoiding abrasion between the flexible strap 1 and the telescopic leg during reuse.

A fifth rod member 9 is further provided at the first end of the inner telescopic leg 4, the fifth rod member 9 being disposed between the third rod member 7 and the fourth rod member 8 such that the flexible strap 1 bypasses the third rod member 7, the fifth rod member 9 and the fourth rod member 8 in this order, the fifth rod member 9 being located at the first side of the flexible strap 1, and the third rod member 7 and the fourth rod member 8 being located at the second side of the flexible strap 1.

The flexible band 1 may bypass the top of the third bar 7, the bottom of the fifth bar 9 and the top of the fourth bar 8 in sequence, or may bypass the bottom of the third bar 7, the top of the fifth bar 9 and the bottom of the fourth bar 8 in sequence. In the process of extending or retracting the flexible belt 1, the third rod piece 7, the fourth rod piece 8 and the fifth rod piece 9 can play an auxiliary role of ejecting or carrying back the flexible belt 1 so as to prevent accumulation or rope disorder caused by the fact that the flexible belt 1 is not retracted when the telescopic leg is rapidly extended.

Preferably, the first lever 5, the second lever 6, the third lever 7, the fourth lever 8 and the fifth lever 9 are rotatable rotation shafts capable of rotating with the movement of the flexible belt 1, thereby reducing wear of the flexible belt 1.

The child seat leg structure further comprises a limiting mechanism for limiting the extension length of the inner telescopic leg 4 relative to the outer telescopic leg 3, so that the third rod member 7 and the fourth rod member 8 are always farther away from the first end of the outer telescopic leg 3 than the first rod member 5 and the second rod member 6, and the first end of the outer telescopic leg 3 is the end, closer to the inner telescopic leg 4, of the outer telescopic leg 3 when the outer telescopic leg 4 extends relatively to the inner telescopic leg 4. In this way, the flexible belt 1 can be always in a tight state, no interference with other structures in the support leg structure can be caused, and the guiding structure can also be always in an effective state.

As a preferred embodiment of the stopper mechanism, the stopper mechanism includes a stopper post 11 provided on one of the outer-layer telescoping leg 3 and the inner-layer telescoping leg 4 and a stopper groove 12 provided on the other of the outer-layer telescoping leg 3 and the inner-layer telescoping leg 4, the stopper post 11 being embedded in the stopper groove 12 to restrict the relative movement range of the outer-layer telescoping leg 3 and the inner-layer telescoping leg 4 by the stopper groove 12.

The stopper post 11 is preferably cylindrical, and the stopper groove 12 is correspondingly preferably an oblong groove for easy manufacture. Of course, the cross section of the limiting post 11 may be polygonal, and the shape of the limiting groove 12 may be changed accordingly, so long as the limiting effect can be achieved.

In the above embodiments, the flexible belt 1 is preferably a safety webbing, but may also be a wire rope or the like.

Based on the above child seat leg structure, the present invention further provides a child seat support seat, which includes the above child seat leg structure, and the child seat leg structure may be mounted on the bottom surface of the support seat body 102. The technical effects of the various embodiments of the leg structure of the child seat are equally applicable to the child seat support, and are not described in detail herein.

The operation of one embodiment of the leg structure of the child seat of the present invention is described below:

As shown in fig. 5, when the child seat leg structure is in contact with the bottom surface of the vehicle interior, the outer layer telescoping leg 3 is disposed above, the inner layer telescoping leg 4 is disposed below, the retractor 2 is disposed in the second chamber 32, the flexible strap 1 is led out from the retractor 2, first bypasses under the first rod member 5 disposed in the second chamber 32 and near the outside of the first chamber 31, then bypasses over the third rod member 7 disposed on the inner layer telescoping leg 4 in the first chamber 31 and near the second chamber 32, then bypasses under the fifth rod member 9 disposed on the middle line of the inner layer telescoping leg 4, then bypasses over the fourth rod member 8 disposed on the inner layer telescoping leg 4 in the first chamber 31 and near the third chamber 33, then bypasses under the second rod member 6 disposed in the third chamber 33 and near the outside of the first chamber 31, and then connects with the fixing rod 10 disposed in the third chamber 33.

When the support is installed, the inner telescopic leg 4 can quickly reach the bottom surface in the vehicle under the action of self gravity and is propped against the bottom surface in the vehicle, and the support leg structure can be provided with no telescopic button, so that the inner telescopic leg 4 and the outer telescopic leg 3 are in a floating state, the total length of the support leg structure can be timely adjusted along with the fluctuation of the vehicle, and the stability of the support seat is maintained.

When the inner telescopic leg 4 moves upwards relative to the outer telescopic leg 3, the supporting leg structure is shortened, the flexible belt 1 is continuously pulled out under the ejection action of the third rod piece 3 and the fourth rod piece 8, and when the detection mechanism detects that the acceleration of the flexible belt 1 pulled out is smaller, the normal shortening of the supporting leg structure is probably corresponding at the moment, and the safety locking mechanism does not perform any operation on the flexible belt 1; when the detection mechanism detects that the pulled acceleration of the flexible belt 1 reaches the preset acceleration, the support leg structure is suddenly and rapidly shortened corresponding to the situation that the vehicle collides or suddenly decelerates, the safety locking mechanism can lock the flexible belt 1, the inner telescopic leg 4 cannot move continuously, and the support leg structure stops shortening;

When the inner telescopic leg 4 moves downwards relative to the outer telescopic leg 3, the supporting leg structure stretches, the flexible belt 1 is retracted by the retractor 2 under the action of the fifth rod piece 9, the acceleration of the flexible belt 1 detected by the detection mechanism is reversed, at the moment, the safety locking mechanism does not operate the flexible belt 1, the flexible belt 1 can be normally retracted, and the supporting leg structure can be normally stretched.

When the child seat supporting seat needs to be disassembled, as the telescopic buttons are not arranged on the supporting leg structure, the telescopic legs are only required to be folded slowly, namely, the speed of the flexible belt 1 pulled out when the supporting leg structure is shortened is smaller than the preset acceleration, so that the telescopic legs can be folded, the folding failure caused by insufficient experience or carelessness of a user is avoided, the telescopic buttons are not required to be operated repeatedly, the operation steps are simplified, and the operation convenience is improved.

Through the explanation of the embodiments of the supporting leg structure and the supporting seat of the child seat, the embodiments of the supporting leg structure and the supporting seat of the child seat can be seen, when the supporting leg structure of the child seat is too fast, the supporting leg structure can stop shrinking through locking of the flexible belt, the influence on the supporting balance of the supporting seat caused by accidental shrinking of the supporting leg structure is prevented, the tipping of the child seat is effectively prevented, the safety performance is improved, and the increasingly strict safety requirements are met; meanwhile, the support leg structure is not provided with a telescopic button, so that the operation steps are simplified, and the operation convenience is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims

1. The utility model provides a children's seat landing leg structure, its characterized in that includes safety locking mechanism and at least two-stage flexible leg, safety locking mechanism sets up between the flexible leg of arbitrary one or more adjacent two-stage in at least two-stage flexible leg, safety locking mechanism includes flexible band (1), flexible band (1) are walked around adjacent two-stage flexible leg and can be followed the relative shrink of adjacent two-stage flexible leg is pulled out, when the instantaneous acceleration that flexible band (1) was pulled out reaches preset acceleration safety locking mechanism can lock flexible band (1) dead in order to restrict through flexible band (1) relative shrink between the adjacent two-stage flexible leg.

2. Child seat leg arrangement according to claim 1, characterized in that the safety locking mechanism further comprises at least one retractor (2), which retractor (2) is arranged on one of the adjacent two-stage telescopic legs and which allows the flexible strap (1) led out by the retractor (2) to bypass the adjacent two-stage telescopic legs, so that the retractor (2) can retract the flexible strap (1) when the adjacent two-stage telescopic legs are extended relatively and to pull out the flexible strap (1) when the adjacent two-stage telescopic legs are retracted relatively.

3. Child seat leg arrangement according to claim 2, characterized in that the at least one retractor (2) comprises a first retractor and a second retractor, the adjacent two-stage telescopic leg comprises an outer telescopic leg (3) and an inner telescopic leg (4), the inner telescopic leg (4) is inserted into the outer telescopic leg (3) and the inner telescopic leg (4) and the outer telescopic leg (3) are relatively movable, the first retractor and the second retractor are arranged on both sides of the inner telescopic leg (3), respectively, the flexible belt (1) comprises one, both ends of the flexible belt (1) are led into the corresponding first retractor and second retractor, respectively; or the flexible belt (1) comprises two flexible belts, one ends of the two flexible belts (1) are connected with each other, and the other ends of the two flexible belts are respectively led into the corresponding first retractor and the second retractor.

4. Child seat leg arrangement according to claim 2, characterized in that the at least one retractor (2) comprises a first retractor, the adjacent two-stage telescopic leg comprises an outer telescopic leg (3) and an inner telescopic leg (4), the inner telescopic leg (4) is embedded in the outer telescopic leg (3) and the inner telescopic leg (4) and the outer telescopic leg (3) are relatively movable, the first retractor is arranged on one side in the outer telescopic leg (3), and the flexible belt (1) bypasses the outer telescopic leg (3) and the inner telescopic leg (4) after being led out from the first retractor and is connected with a fixed point arranged on the other side in the outer telescopic leg (3).

5. Child seat leg structure according to claim 2, characterized in that the retractor (2) is a seat belt retractor for use in a car seat belt.

6. Child seat leg structure according to claim 1, characterized in that the adjacent two-stage telescopic legs are provided with guiding structures for the flexible belt (1) to bypass, which can guide the movement path of the flexible belt (1) so as to avoid interference and friction between the flexible belt (1) and the adjacent two-stage telescopic legs.

7. Child seat leg arrangement according to claim 6, characterized in that the adjacent two-stage telescoping leg comprises an outer telescoping leg (3) and an inner telescoping leg (4), the inner telescoping leg (4) being inserted into the outer telescoping leg (3) and the inner telescoping leg (4) and the outer telescoping leg (3) being movable relative to each other, the guiding arrangement comprising a first rod set arranged on the outer telescoping leg (3) and a second rod set arranged on the inner telescoping leg (4), guiding the bypassed flexible belt (1) by means of the first rod set and the second rod set.

8. Child seat leg structure according to claim 7, characterized in that the first bar set comprises a first bar (5) and a second bar (6), a first chamber (31) for accommodating the inner telescopic leg (4) is provided in the outer telescopic leg (3), the first bar (5) and the second bar (6) are symmetrically arranged on both sides outside the first chamber (31) with respect to the central axis of the inner telescopic leg (4); and/or, the second rod group comprises a third rod piece (7) and a fourth rod piece (8), the third rod piece (7) and the fourth rod piece (8) are symmetrically arranged at the first end of the inner layer telescopic leg (4) relative to the central axis of the inner layer telescopic leg (4), and the first end of the inner layer telescopic leg (4) is the end, close to the outer layer telescopic leg (3), of the inner layer telescopic leg (4) when the outer layer telescopic leg (3) stretches out relatively.

9. Child seat leg structure according to claim 8, characterized in that the first end of the inner telescoping leg (4) is further provided with a fifth bar (9), the fifth bar (9) being arranged between the third bar (7) and the fourth bar (8) such that the flexible belt (1) bypasses the third bar (7), the fifth bar (9) and the fourth bar (8) in sequence, the fifth bar (9) being located at the first side of the flexible belt (1), the third bar (7) and the fourth bar (8) being located at the second side of the flexible belt (1).

10. Child seat leg structure according to claim 9, characterized in that the first lever (5), the second lever (6), the third lever (7), the fourth lever (8) and the fifth lever (9) are rotatable rotation shafts.

11. Child seat leg arrangement according to claim 8, further comprising a limiting mechanism for limiting the extension of the inner telescoping leg (4) relative to the outer telescoping leg (3) such that the third (7) and fourth (8) levers are always further from the first end of the outer telescoping leg (3) than the first (5) and second (6) levers, the first end of the outer telescoping leg (3) being the end of the outer telescoping leg (3) that is closer to the inner telescoping leg (4) when extended opposite the inner telescoping leg (4).

12. The child seat leg structure according to claim 11, wherein the stopper mechanism includes a stopper post (11) provided on one of the outer-layer telescoping leg (3) and the inner-layer telescoping leg (4) and a stopper groove (12) provided on the other of the outer-layer telescoping leg (3) and the inner-layer telescoping leg (4), the stopper post (11) being embedded in the stopper groove (12) to restrict a relative movement range of the outer-layer telescoping leg (3) and the inner-layer telescoping leg (4) by the stopper groove (12).

13. Child seat leg arrangement according to claim 1, further comprising a detection mechanism for detecting an instantaneous acceleration of the flexible belt (1) when pulled out, the detection mechanism being in signal connection with the safety locking mechanism for the safety locking mechanism to lock the flexible belt (1) in accordance with a detection signal of the detection mechanism.

14. The child seat leg structure according to claim 1, wherein a lower one of the adjacent two-stage telescoping legs is extendable by its own weight with respect to an upper other one of the adjacent two-stage telescoping legs.

15. A child seat support comprising a child seat leg structure according to any one of claims 1 to 14.