CN206086455U - Children's safety seat supporting seat - Google Patents

Abstract

The utility model relates to a children's safety seat supporting seat, including supporting base (2) and supporting leg (1), it is used for installing children's safety seat to support base (2), supporting leg (1) is connected support the front end of base (2) for in the car floor with support forming supporting role between base (2), its characterized in that, supporting leg (1) including extending structure and one -way lock mechanism (6, 7), one -way lock mechanism (6, 7) set up relatively between concertina movement's the part, be used for making among the extending structure extending structure simple elongation and can not backward retracting. The utility model discloses an extending structure extends and is fit for just backward automatic locking behind the position, and the supporting leg can avoid children's safety seat to overturn forward and lead to the fact the bodily injury who takes children to the good supporting role of children's cut -out base chair formation when having guaranteed that the vehicle bumps perhaps emergency brake.

Description

Child safety seat support base

Technical field

This utility model is related to child safety seat field, more particularly to a kind of child safety seat support base.

Background technology

Child safety seat is a kind of by child restraint is safe to effectively improve children riding in safety seat Seat.In the case of slowing down in car crass or suddenly, the seat can reduce the body of the stamping press to child and limiting child Body movement is so as to mitigating the injury to them.In current existing child safety seat, based on European pressure standard The child safety seat of ISOFIX interfaces is widely used.

In view of there is difference in height between seat plane and floor in a vehicle, the only connection with ISOFIX interfaces is difficult to hold By the situation for coming from car crass or slow down suddenly, therefore existing many child safety seats are more stable in order to support, The front end that the support base of seat is installed in child is provided with supporting leg, to form secure support with floor in a vehicle, and then improves The security protection effect of children's seat.

On the other hand, it is contemplated that child safety seat occupies larger space in itself, as a rule, when need not use During child safety seat, user generally requires dismounting and folds, and when needing to use, row is installed again.Therefore, this further requires Support base can shrink or fold.User generally requires many more manipulations when existing children's seat support base is installed, including Support base is put into into seat plane, ISOFIX interfaces is reconnected, is then operated the flexible button on supporting leg again, make support Lower limb reaches appropriate length, then unclamps flexible button again and carrys out locking support lower limb.Whole installation process is comparatively laborious, and needs User has certain use experience.For lacking experience or comparing careless user, supporting leg may be adjusted It is not in place, it is impossible to push against ground well, or flexible button fails correct locking so that supporting leg is in scalable shape State, this has resulted in certain potential safety hazard.

Utility model content

The purpose of this utility model is to propose a kind of child safety seat support base, can simplify installation, and eliminating as far as possible makes Potential safety hazard when user installs.

For achieving the above object, this utility model provide a kind of child safety seat support base, including support base and Supporting leg, the support base are used to install child safety seat, and the supporting leg is connected to the front end of the support base, use Supporting role is formed between floor in the car and the support base, wherein, the supporting leg includes stretching structure and unidirectional Lockable mechanism, the one-way lock mechanism are capable of between the part of relative telescoping movement in being arranged on the stretching structure, are used for Make the stretching structure simple elongation and reversely can not retract.

Further, it is additionally provided with unidirectional locking status releasing on the supporting leg to switch, the unidirectional locking state solution Except switch is connected with the one-way lock mechanism, unidirectional locking of the one-way lock mechanism to the telescoping mechanism can be released State.

Further, the one-way lock mechanism is unidirectional ratchet lockable mechanism, including：Ratchet bar and pawl component, institute State unidirectional locking status releasing switch to be connected with the pawl component, the unidirectional locking status releasing switch is in normally off When, the pawl component can be made against on the ratchet bar, in unidirectional locking status releasing switch by external force triggering During unlatching, the unidirectional locking status releasing switchs the position that the pawl component can be driven to leave against the ratchet bar, Release unidirectional locking state of the one-way lock mechanism to the telescoping mechanism.

Further, the stretching structure includes stretching structure part and lower stretching structure part, the upper stretching structure part It is rotatably connected on the bottom surface of the support base, one of the ratchet bar and pawl component are arranged on the upper stretching structure It is on part, another to be arranged on the lower stretching structure part.

Further, the upper stretching structure part is hollow pipe fitting, and the lower stretching structure part is set in the hollow pipe In part, and can slide relative to the rectilinear direction of the upper stretching structure part, the ratchet bar is disposed longitudinally on described hollow The inner side of pipe fitting, the pawl component are arranged on the lower stretching structure part, and can be relative to the lower stretching structure part Rotate.

Further, the lower end of the lower stretching structure part is additionally provided with footing, and the unidirectional locking status releasing switch sets Put on the footing, the unidirectional locking status releasing switch is connected with the pawl component by connector.

Further, the one-way lock mechanism also includes the first flexible member, and first flexible member can make institute Unidirectional locking status releasing switch keeping is stated in normally off, and is switched by external force triggering in the unidirectional locking status releasing Afterwards, the unidirectional locking status releasing switch is made to revert to normally closed shape when can switch the unidirectional locking status releasing is discharged State.

Further, the lower stretching structure part is the symmetrical pipe fitting of I-shaped cross section, the two of the symmetrical pipe fitting Side is provided with I-shaped connected in star, and the ratchet bar is symmetrical to be arranged on the inside of the hollow pipe fitting and the I-shaped connected in star pair The position answered, the pawl component are rotatably arranged in the I-shaped connected in star by rotating shaft.

Further, expansion locking mechanism, the stretching structure are provided between the support base and the supporting leg Including upper stretching structure part and lower stretching structure part, the upper stretching structure part is rotatably connected on the bottom surface of the support base On, under the lock-out state of the expansion locking mechanism, the expansion locking mechanism can lock the lower stretching structure part, with The lower stretching structure part is prevented to slide from relative with the upper stretching structure part, in the released state of the expansion locking mechanism Under, the expansion locking mechanism can release the locking action to the lower stretching structure part, so that the lower stretching structure part Under gravity automatically relative to the upper stretching structure part slide downward, until supporting forced position.

Further, ISOFIX connectors are additionally provided with the support base, the ISOFIX connectors are stretched with described The connection of operability is formed between contracting locking mechanism, vehicle mounting interface to be correctly linked in the ISOFIX connectors When, drive the expansion locking mechanism to switch to released state from standing lock-out state.

Further, it is additionally provided with for being connected with child safety seat in the support base, and supports the child The connection supporting member of safety seat, forms the company of operability between the connection supporting member and the expansion locking mechanism Connect, to be properly attached in the support base in the child safety seat, and during against the connection supporting member, drive Move the expansion locking mechanism released state is switched to from standing lock-out state.

Further, the expansion locking mechanism includes rotating switch and the second flexible member, the rotating switch and institute State stretching structure part and rotate connection, second flexible member is connected with the rotating switch, and the rotating switch is described The elastic force effect of the second flexible member is lower to maintain normality to be lock-out state, and in the presence of by external force overcomes second bullet Property element elastic force effect and depart from lock-out state.

Further, U-shaped push rod and a pair of drive rods are additionally provided with the support base, the both sides of the U-shaped push rod push away Multiple draw-in grooves are provided with bar segment, the bottom push rod section of the U-shaped push rod is in the side of the expansion locking mechanism, the drive It is slidably connected between one end of lever and the ISOFIX connectors, the other end is provided with bulge-structure, can be with the U-shaped push rod Both sides push rod section arbitrary draw-in groove clamping, when the ISOFIX connectors are correctly linked into vehicle mounting interface, by pushing away Moving the support base can make the U-shaped push rod top to the expansion locking mechanism, with promote the expansion locking mechanism from Standing lock-out state switches to released state.

Further, be additionally provided with ISOFIX extensible members in the support base, the ISOFIX extensible members with it is described ISOFIX connectors are fixedly connected, and can stretch out or retract relative to the support base, on the ISOFIX extensible members Multiple draw-in grooves are provided with, when the ISOFIX connectors are not linked into vehicle mounting interface, the other end of the drive rod Bulge-structure with arbitrary draw-in groove clamping of the ISOFIX extensible members, and can be worked as the ISOFIX connectors and be correctly linked into car During mounting interface, stretched by promoting the support base that the bulge-structure of the drive rod can be made to depart from the ISOFIX Part, and the draw-in groove clamping with the both sides push rod section of the U-shaped push rod, so as to drive the U-shaped push rod to the flexible locking machine Structure is moved.

Further, the bulge-structure is unidirectional bulge-structure, in the another of the support base and the drive rod The 3rd flexible member is additionally provided between end, when the support base does not receive thrust, the unidirectional bulge-structure can be described The draw-in groove of the lower both sides push rod section for departing from the U-shaped push rod of elastic force effect of the 3rd flexible member.

Further, the one-way lock mechanism is unidirectional voussoir lockable mechanism, including：Serrate slot and wedge, it is described Wedge is connected with drawstring, the unidirectional locking with double wedge corresponding with the serrate slot and lozenges on the wedge Status releasing switch is connected with the drawstring, and when unidirectional locking status releasing switch is not triggered, the wedge exists Action of gravity lower edge lozenges slide downward so that the double wedge of the wedge is embedded in the serrate slot；In the unidirectional locking When status releasing switch is triggered by external force, the unidirectional locking status releasing switch drives the wedge by the drawstring Along lozenges upward sliding so that the double wedge of the wedge departs from the serrate slot, the one-way lock mechanism is released to institute State the unidirectional locking state of telescoping mechanism.

Further, the stretching structure includes stretching structure part and lower stretching structure part, the upper stretching structure part It is rotatably connected on the bottom surface of the support base, the upper end of the lower stretching structure part is provided with and the wedge on the wedge The wedge-like engagement face that shape face coordinates, the serrate slot are disposed longitudinally on the inner side of the upper stretching structure part, and the wedge sets Between the wedge-like engagement face of the serrate slot and the lower stretching structure part.

Further, also including guide pipe, the guide pipe is fixed on the lower stretching structure part, and the drawstring is passed through The guide pipe is drawn out to the outside of the telescoping mechanism, is additionally provided with described and the guide pipe coordinates on stretching structure part Guide and limit groove, the lower stretching structure part phase can be realized by slip of the guide pipe in the guide and limit groove For the motion guide and extreme position of upper stretching structure part are limited.

Further, the one-way lock mechanism includes symmetrical along the length direction centrage of the lower stretching structure part Two wedges, the drawstring that two wedges are each drawn are drawn from the two ends of the guide pipe respectively, or Draw from the either end of the guide pipe after drawstring connection described in person.

Based on above-mentioned technical proposal, the supporting leg in this utility model makes stretching structure unidirectional by one-way lock mechanism Extend and reversely can not retract, thus facilitating user only need to be by stretching structure toward floor in a vehicle direction when being installed Stretch out or floor in a vehicle is elongated to automatically using the weight of supporting leg itself, voluntarily adjust the flexible of supporting leg without using person The extension elongation of structure, and just being capable of reverse auto lock after stretching structure is elongated to suitable position, it is ensured that vehicle is sent out When raw collision or emergency brake, supporting leg can form good supporting role to child safety seat, it is to avoid child safety seat Chair overturns forward and causes to take the personal injury of child.

Description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application, Schematic description and description of the present utility model is used to explain this utility model, does not constitute to of the present utility model improper Limit.In the accompanying drawings：

Mounting structure schematic diagrams of the Fig. 1 for an embodiment of this utility model child safety seat support base.

Exploded perspective views of the Fig. 2 for this utility model child safety seat support base embodiment.

Generalized sections of the Fig. 3 for the supporting leg in this utility model child safety seat support base embodiment.

During Fig. 4, Fig. 5 are respectively this utility model child safety seat support base embodiment, expansion locking mechanism is in locking With the schematic diagram of unlocked position.

Fig. 6 is the structural representation of lower stretching structure part in this utility model child safety seat support base embodiment.

Fig. 7 is the structural representation of drive rod in this utility model child safety seat support base embodiment.

Fig. 8, Fig. 9 are respectively the inside of the supporting leg in another embodiment of this utility model child safety seat support base And side schematic view.

Specific embodiment

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

As shown in figure 1, the mounting structure schematic diagram of the embodiment for this utility model child safety seat support base. In the present embodiment, child safety seat support base (after also abbreviation support base) is including support base 2 and supporting leg 1.Support base 2 For installing child safety seat, supporting leg 1 is connected to the front end of support base 2, for floor in the car and the support bottom Supporting role is formed between seat 2.

In order to be more convenient to illustrate the structure inside support base 2, therefore not shown its upper strata of the support base 2 shown in Fig. 1 For supporting child safety seat, and the part being connected with child safety seat.Supporting leg cross-section structure with reference to shown in Fig. 3, Supporting leg 1 includes stretching structure and one-way lock mechanism 6.Stretching structure is the body junction that supporting leg 1 is realized elongating or shortening Structure, by the Telescopic of stretching structure, it is possible to achieve child safety seat support base folding and installing.One-way lock mechanism 6 be arranged on stretching structure in be capable of between the part of relative telescoping movement, for make the stretching structure simple elongation and can not Reversely retract.

Simple elongation mentioned here is referred on the seat being installed in vehicle when child safety seat support base and is carried out After connection, the supporting leg 1 in retracted mode can be towards the direction elongation on floor in vehicle, until holding out against in-car ground originally Plate.The installation operation that this simple elongation enables to user is convenient, and user is without the need for voluntarily adjustment is supported by rule of thumb The length of lower limb, and only when mounted stretching structure need to be stretched out toward floor in a vehicle direction one direction, or utilize supporting leg The weight of itself is elongated to floor in a vehicle automatically.And reversely can not retract, refer to that restriction supporting leg 1 can not be to its prolonging direction Opposite direction, i.e., from ground point to child safety seat support base direction retract.By this restriction effect to supporting leg, The supporting leg of child safety seat support base can be enable easily to be installed and ground supports.And collide in vehicle When accident or emergency brake, the supporting leg for being restricted from retracting then is able to ensure which forms good support and makees to support base again With reducing the personal injury to taking child.

As shown in Fig. 2 the unidirectional locking of stretching structure can pass through the unidirectional locking state further arranged on supporting leg 1 Cancel switch 5 is releasing.In figure 3, unidirectional locking status releasing switch 5 is connected with one-way lock mechanism 6, can release described The unidirectional locking effect of 6 pairs of telescoping mechanisms of one-way lock mechanism.Unidirectional locking status releasing switch 5 can be button-shape state Or handle form etc., user just can easily realize the stretching structure of supporting leg 1 by the operation to the switch Fold, so as to further realize dismounting of the support base on seat.

Fig. 3 shows a kind of structure example of one-way lock mechanism, and the one-way lock mechanism 6 is locked for normally closed unidirectional ratchet Locking mechanism, the mechanism include ratchet bar 6.2 and pawl component 6.1, and unidirectional locking status releasing switch 5 is connected with pawl component 6.1 Connect.Unidirectional locking status releasing switch 5 in normally off when, pawl component 6.1 can be made against on the ratchet bar 6.2, So that pawl component 6.1 can effectively stop motion of the ratchet bar 6.2 on the retracted orientation of stretching structure, and now ratchet Component 6.1 is not hindered to the direction of stretching out of stretching structure.And triggered (for example by external force in unidirectional locking status releasing switch 5 When user's finger or palm are pressed unidirectional locking status releasing switch and 5) opened, unidirectional locking status releasing switch 5 can Drive pawl component 6.1 leaves the position against ratchet bar 6.2, releases the unidirectional of 6 pairs of telescoping mechanisms of one-way lock mechanism Locking is acted on, now ratchet bar 6.2 stretching structure extend and retract direction can free movement so that flexible knot Structure freely can stretch.

In Fig. 3, stretching structure may particularly include stretching structure part 1.1 and lower stretching structure part 1.2.Upper stretching structure part 1.1 are rotatably connected on the bottom surface of support base 2, and ratchet bar 6.2 is arranged on stretching structure part 1.1, pawl component 6.1 It is arranged on lower stretching structure part 1.2.In another embodiment, ratchet bar 6.2 can also be arranged on lower stretching structure part 1.2 On, accordingly, pawl component 6.1 is arranged on stretching structure part 1.1.Thus pass through ratchet bar 6.2 and pawl component 6.1 Between unidirectional locking effect realizing unidirectionally the stretching out and reversely relative to upper stretching structure part 1.1 of lower stretching structure part 1.2 Retraction locking.

In form, upper stretching structure part 1.1 can be in the form of hollow pipe fitting, and lower stretching structure part 1.2 is set in In hollow pipe fitting, and lower stretching structure part 1.2 can slide relative to the rectilinear direction of upper stretching structure part 1.1.Ratchet bar 6.2 inner sides that can be disposed longitudinally on hollow pipe fitting, the pawl component 6.1 are arranged on the lower stretching structure part 1.2, and Can rotate relative to the lower stretching structure part 1.2.When pawl component 6.1 is rotated in diverse location, pawl component 6.1 or Person is unrestricted to ratchet bar 6.2, or forms the locking effect to ratchet bar 6.2.Lower stretching structure part with reference to shown in Fig. 6 Example, lower stretching structure part 1.2 are preferably the symmetrical pipe fitting of I-shaped cross section, are provided with I-shaped recessed in the both sides of symmetrical pipe fitting Groove 1.7, ratchet bar 6.2 is symmetrical to be arranged on the inside of hollow pipe fitting and 1.7 corresponding position of I-shaped connected in star, and ratchet structure Part 6.1 is rotatably arranged in I-shaped connected in star 1.7 by rotating shaft.This I-shaped connected in star is in the overall transverse width of control Accommodation space is provided to one-way lock mechanism 6 simultaneously so that overall compacter, the hollow structure form of employing of supporting leg The overall weight of supporting leg, material-saving can be reduced.

In order that lower stretching structure part 1.2 can form good support with floor in a vehicle, preferably in lower stretching structure part 1.2 lower end arranges footing 1.3, and unidirectional locking status releasing switch 5 can be arranged on footing 1.3, and user can pass through The unidirectional locking status releasing switch 5 pressed on footing 1.3 performs the operation of unidirectional locking states thereof, so as to realize supporting leg 1 Fold.With reference to Fig. 3, unidirectional locking status releasing switch 5 is connected with pawl component 6.1 by connector 1.4, connector 1.4 Form can be rigid posts or steel wire rope, when unidirectional locking status releasing switch 5 is made with a kind of pushbutton type of projection When user's force is pressed, unidirectional locking status releasing switch 5 can be moved downward with follower link 1.4, and this downward fortune The dynamic pawl component 6.1 that can be delivered to upside, drives pawl component 6.1 to move to the position for not limiting ratchet bar 6.2.In Fig. 3 The motion of connector 1.4 can drive pawl component 6.1 to rotate, so that the ratchet of pawl component 6.1 is upwarped, leave ratchet bar 6.2 between cog.

For the connector 1.4 of hard rod type, which can pass through the fit system of elongated slot and sliding bar with ratchet member 6.1 Be attached, so as not to 1.4 amplitude of fluctuation of connector it is excessive and interfere miscellaneous part motion.Above-mentioned one-way lock mechanism can be wrapped Include multiple, such as two, and it is symmetrical relative to the length direction centrage of lower stretching structure part or upper stretching structure part, so that Telescoping mechanism obtains movement effects more in a balanced way, it is to avoid abrasion and limitation of movement that unilateral eccentric wear is caused.

In Fig. 3, first flexible member 1.5 can also be further set in footing 1.3, as one-way lock mechanism 6 A part, the first flexible member 1.5 can make unidirectional locking status releasing switch 5 maintain normally off, and described unidirectional After lockup state cancel switch 5 is by external force triggering, can make when unidirectional locking status releasing switch 5 are discharged described unidirectional Lockup state cancel switch 5 reverts to normally off.

One-way lock mechanism can also adopt other existing one-way locks in addition to above-mentioned unidirectional ratchet lockable mechanism Locking mechanism, carries out mechanism of unidirectional locking etc. for example with unidirectional friction plate.Fig. 8-Fig. 9 also show another kind of feasible unidirectional Lockable mechanism 7, the one-way lock mechanism 7 are unidirectional voussoir lockable mechanism, including：Serrate slot 7.1 and wedge 7.2, the wedge Shape block 7.2 with 7.1 corresponding double wedge 7.3 of the serrate slot and lozenges, drawstring 7.4 is connected with the wedge 7.2 With drawstring 7.5, unidirectional locking status releasing switch 5 is connected with drawstring 7.4 and drawstring 7.5.Unidirectional locking status releasing is opened Close 5 fag ends that can be other button or handle, or drawstring 7.4 and drawstring 7.5.

When unidirectional locking status releasing switch 5 is not triggered, the wedge 7.2 is under gravity along wedge shape Towards lower slider so that the double wedge 7.3 of the wedge 7.2 is embedded in the serrate slot 7.1.In the unidirectional locking status releasing When switch 5 is triggered by external force, the unidirectional locking status releasing switch 5 passes through the drawstring 7.4,7.5 to drive the wedge shape Block 7.2 is along lozenges upward sliding so that the double wedge 7.3 of the wedge 7.2 departs from the serrate slot 7.1, releases the list To the unidirectional locking state of 7 pairs of telescoping mechanisms of lockable mechanism.

In this embodiment, stretching structure can specifically include stretching structure part 1.1 and lower stretching structure part 1.2, institute State stretching structure part 1.1 to be rotatably connected on the bottom surface of the support base 2, the upper end of the lower stretching structure part 1.2 The wedge-like engagement face coordinated with the lozenges on the wedge 7.2 is provided with, the serrate slot 7.1 is disposed longitudinally on described to be stretched The inner side of sheepshank component 1.1, the wedge 7.2 is located at the serrate slot 7.1 and the wedge shape of the lower stretching structure part 1.2 is matched somebody with somebody Between conjunction face.Shown in Figure 8, upper stretching structure part 1.1 is may be configured as with hollow cavity, and lower stretching structure part 1.2 is located at In hollow cavity, and can move on the length direction of upper stretching structure part 1.1 relative to upper stretching structure part 1.1.Under stretch The upper end of sheepshank component 1.2 can be arranged in echelon, to form wedge-like engagement face.

It is more stable relative to the motion of upper stretching structure part 1.1 in view of lower stretching structure part 1.2,18, according to right will Seek the child safety seat support base described in 17, it is characterised in that also including guide pipe 7.6, the guide pipe 7.6 is fixed on institute State on lower stretching structure part 1.2, the drawstring 7.4,7.5 is drawn out to the outside of the telescoping mechanism through the guide pipe 7.6, The guide and limit groove 7.7 coordinated with the guide pipe 7.6 is additionally provided with described on stretching structure part 1.1, by the guiding Slip of the pipe 7.6 in the guide and limit groove 7.7 can realize the stretching structure part relative on of the lower stretching structure part 1.2 1.1 motion guide and extreme position are limited.

In order that the motion of stretching structure part is more stable up and down, one-way lock mechanism 7 can be included along the lower flexible knot Two symmetrical wedges 7.2 of the length direction centrage of component 1.2.Operate two wedges 7.2 for convenience to hold Row unblock operation, two 7.2 respective drawstrings 7.4,7.5 drawn of the wedge can respectively from the guide pipe 7.6 Two ends draw, so as to user by pulling drawstring 7.4 and drawstring 7.5 simultaneously realizing the unblock of unidirectional locking state. In another embodiment, it is also possible to first connect drawstring 7.4 and drawstring 7.5, then draw from the either end of guide pipe 7.6, this Sample user only needs to complete unblock by side pulls.

In addition to aforesaid one-way lock mechanism, this utility model gives flexible locking in another embodiment Correlation function and structure, i.e., between support base 2 and the supporting leg 1 arrange expansion locking mechanism 3, stretching structure includes Upper stretching structure part 1.1 and lower stretching structure part 1.2, the upper stretching structure part 1.1 are rotatably connected on the support base 2 On bottom surface.Under the lock-out state of expansion locking mechanism 3, expansion locking mechanism 3 can lock the lower stretching structure part 1.2, so that the lower stretching structure part 1.2 relative can not be slided with the upper stretching structure part 1.1.In the flexible locking machine Under the released state of structure 3, the expansion locking mechanism 3 can release the locking action to the lower stretching structure part 1.2, so that The lower stretching structure part 1.2 is under gravity automatically relative to upper 1.1 slide downward of stretching structure part, until supporting Forced position.Lower stretching structure part 1.2 can also be stretched in stretching structure part 1.1 under the effect of the force of user relative on Go out.

This expansion locking mechanism facilitates user operation when mounted, when support base is not yet installed, by stretching The lock-out state of contracting locking mechanism is in the short length of contraction to limit supporting leg, is now easy to receive and move, and working as makes When user starts to install support base, only expansion locking mechanism need to be arranged to released state, then descend the stretching structure part just can be In the presence of gravity, automatic slide downward is reached and supports forced position, and one-way lock mechanism already mentioned before realize function and Principle, instantly stretching structure part under gravity automatically slide downward when will not be limited by one-way lock mechanism；And work as Lower stretching structure part is reached after supporting forced position, and which can be limited by one-way lock mechanism and reversely can not be retracted, so as to obtain Effective and stable supporting role to floor in a vehicle.

ISOFIX connectors 4.1 are additionally provided with support base 2, in one embodiment, ISOFIX connectors 4.1 can be with The connection of operability is formed between the expansion locking mechanism 3, to be correctly linked in the ISOFIX connectors 4.1 During vehicle mounting interface, the expansion locking mechanism 3 is driven to switch to released state from standing lock-out state.

Referring to Fig. 4 and Fig. 5, the expansion locking mechanism 3 includes rotating switch to one structure example of expansion locking mechanism 3 3.1 and second flexible member 3.2, the rotating switch 3.1 is rotated with the upper stretching structure part 1.1 and is connected, second bullet Property element 3.2 be connected with the rotating switch 3.1, the rotating switch 3.1 second flexible member 3.2 elastic force act on Lower maintenance normality is lock-out state, and being acted on by the elastic force that second flexible member 3.2 is overcome in the presence of external force Depart from lock-out state.The installation of rotating switch 3.1 and the second flexible member 3.2 for convenience, can be in upper stretching structure part 1.1 Pole 3.3 is fixedly installed, the rotating switch 3.1 is spindle rotationally arranged on pole 3.3, the second elastic switch 3.1 is optional Torsion spring is selected, and is arranged between pole 3.3 and rotating switch 3.1.A kind of version of rotating switch 3.1 was as shown in figure 4, should Rotating switch is L-type, including the folding arm of two basic Relative verticals, its first folding arm for lower stretching structure part 1.2 Hole 1.6 carry out grafting cooperation, to limit the whereabouts of lower stretching structure part 1.2, second folding arm raises up, can be at other First folding arm is driven to leave hole 1.6 under the promotion of component, so as to release the restriction to lower stretching structure part 1.2.In this practicality In new, rotating switch 3.1 is not limited to L-type structure, or can realize by rotating that lower stretching structure part 1.2 is relative In the other structures of the flexible locking and unblock of upper stretching structure part 1.1.

In order to connection can be set up and the releasing process of expansion locking mechanism between in the access action of ISOFIX connectors 4.1 System, with reference to Fig. 1 and Fig. 2, preferably further arranges U-shaped push rod 4.5 and a pair of drive rods 4.2, the U-shaped in support base 2 Multiple draw-in grooves (including the through hole of the obstructed shallow slot in bottom or bottom transmission) are provided with the both sides push rod section of push rod 4.5, The bottom push rod section of the U-shaped push rod 4.5 is in the side of the expansion locking mechanism 3.

Fig. 7 shows that one kind of drive rod 4.2 realizes structure.One end 4.2.1 and the ISOFIX of the drive rod 4.2 connects It is slidably connected between fitting 4.1, the other end is provided with bulge-structure, can be arbitrary with the both sides push rod section of the U-shaped push rod 4.5 Draw-in groove clamping, when the ISOFIX connectors 4.1 are correctly linked into vehicle mounting interface, by promoting the support base 2 Can make the U-shaped push rod 4.5 push up to the expansion locking mechanism 3 (for example push up second folding arm to rotating switch 3.1, with First folding arm is driven to depart from hole 1.6), to promote the expansion locking mechanism 3 to switch to unblock shape from standing lock-out state State.

Further, ISOFIX extensible members 4.3, the ISOFIX extensible members 4.3 and institute can be set in support base 2 State ISOFIX connectors 4.1 to be fixedly connected by connectors such as pin or bolts, and can stretch out relative to the support base 2 Or retract.Multiple draw-in grooves are also equipped with the ISOFIX extensible members 4.3 (includes the obstructed shallow slot in bottom or bottom transmission Through hole).

When the ISOFIX connectors 4.1 are not linked into vehicle mounting interface, the other end of the drive rod 4.2 it is convex Play structure and with arbitrary draw-in groove clamping of the ISOFIX extensible members 4.3, and 4.1 correct access of the ISOFIX connectors can be worked as During to vehicle mounting interface, the bulge-structure of the drive rod 4.2 can be made to depart from described by promoting the support base 2 ISOFIX extensible members 4.3, and the draw-in groove clamping with the both sides push rod section of the U-shaped push rod 4.5, so as to drive the U-shaped push rod 4.5 move to the expansion locking mechanism 3.

Bulge-structure be unidirectional bulge-structure 4.2.2, the support base 2 and the drive rod 4.2 the other end it Between be additionally provided with the 3rd flexible member 4.6, when the support base 2 does not receive thrust, the unidirectional bulge-structure 4.2.2 can be The draw-in groove of the lower both sides push rod section for departing from the U-shaped push rod 4.5 of elastic force effect of the 3rd flexible member 4.6.

Realize except by the access of ISOFIX connectors in addition to the scheme of expansion locking mechanism unblock, this utility model Additionally provide another kind of implementation.It is additionally provided with for being connected with child safety seat in the support base 2, and supports The connection supporting member of the child safety seat, connection supporting member can be formed between the expansion locking mechanism 3 can The connection of operability, to be properly attached in the support base 2 in the child safety seat, and against the connection During support component, the expansion locking mechanism 3 is driven to switch to released state from standing lock-out state.

Based on the example of this utility model child safety seat support base shown in Fig. 2-Fig. 5, the peace to the example below Fill, use and dismantle the explanation for carrying out an entirety.

Under the storage configuration or unused state of support base, lower stretching structure part 1.2 is relative to upper stretching structure part 1.1 are in retracted mode, and now 1 length of supporting leg is most short, are easy to storage.And the rotating switch 3.2 of expansion locking mechanism 3 It is plugged in the hole 1.6 on lower stretching structure part 1.2, it is to avoid lower stretching structure part 1.2 is because of reasons such as placed angle or vibrations And stretch out from upper stretching structure part 1.1.

When user need install child safety seat when or need it is preparatory first install child safety seat install During seat, user can be placed on support base in seat plane, and pull back ISOFIX relative to support base 2 Connector 4.1, and ISOFIX connectors 4.1 are attached with the ISOFIX interfaces on seat.After connection is finished, make User promotes support base 2 backward, when one end 4.2.1 of drive rod 4.2 supports ISOFIX connectors 4.1, drive rod 4.2 On the other end can then compress the 3rd flexible member 4.6, and make unidirectional bulge-structure 4.2.2 positioned at the end from extensible member Deviate from 4.3 draw-in groove, and stretch out from the front side of extensible member 4.3.The unidirectional bulge-structure 4.2.2 for stretching out can be with U-shaped push rod The draw-in groove clamping of 4.5 both sides push rod section, now promote support base 2 motion may translate into U-shaped push rod 4.5 relative to Support travelling forward for base 2.And when U-shaped push rod 4.5 touches second folding arm of rotating switch 3.2, by second The effect of folding arm applying power, so as to overcome the elastic force of the second flexible member 3.2, and drives first folding arm to depart from hole 1.6.

Now, when being placed in seat plane due to the support base 2 of support base, before supporting leg is then located at seat In the space of side, therefore when rotating switch 3.2 has unlocked the restriction to lower stretching structure part 1.2, lower stretching structure part 1.2 is just Can slide downwards under gravity, and now ratchet bar 6.2 will not be to ratchet in the direction that lower stretching structure part 1.2 stretches out Component 6.1 is limited, therefore lower stretching structure part 1.2 can go directly floor in a vehicle.And after reaching floor in a vehicle, in ratchet bar Under the unidirectional locking effect of 6.2 pairs of ratchet assemblies 6.1, lower stretching structure part 1.2 reversely will not be retracted.Now, support base by Install, children's seat further can be installed.

When user wishes to unload support base, user need to only operate the list on the footing 1.3 of lower stretching structure part 1.2 To lockup state cancel switch 5, it is possible to release the restriction of the reverse retraction of lower stretching structure part 1.2, so as to easily carry out The dismounting and storage of support base.

Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than which is limited System；Although being described in detail to this utility model with reference to preferred embodiment, those of ordinary skill in the art should Understand：Still specific embodiment of the present utility model can be modified or equivalent is carried out to some technical characteristics and replace Change；Without deviating from the spirit of technical solutions of the utility model, which all should cover the technical scheme being claimed in this utility model In the middle of scope.

Claims (19)

1. a kind of child safety seat support base, including support base (2) and supporting leg (1), the support base (2) is for pacifying Dress child safety seat, the supporting leg (1) is connected to the front end of the support base (2), for floor in the car and described Support base forms supporting role between (2), it is characterised in that the supporting leg (1) is including stretching structure and unidirectional locking machine Structure (6,7), the one-way lock mechanism (6, it is capable of in 7) being arranged on the stretching structure between the part of relative telescoping movement, Reversely can not retract for making the stretching structure simple elongation.

2. child safety seat support base according to claim 1, it is characterised in that also set on the supporting leg (1) There is unidirectional locking status releasing switch (5), and unidirectional locking status releasing switch (5) and the one-way lock mechanism (6,7) Connection, can release the one-way lock mechanism (6,7) the unidirectional locking state to the telescoping mechanism.

3. child safety seat support base according to claim 2, it is characterised in that the one-way lock mechanism (6) is Unidirectional ratchet lockable mechanism, including：Ratchet bar (6.2) and pawl component (6.1), the unidirectional locking status releasing switch (5) Be connected with the pawl component (6.1), unidirectional locking status releasing switch (5) in normally off when, can make described Pawl component (6.1) switchs (5) by external force triggering in the unidirectional locking status releasing against on the ratchet bar (6.2) During unlatching, unidirectional locking status releasing switch (5) can drive the pawl component (6.1) to leave against the ratchet bar (6.2) position, releases unidirectional locking state of the one-way lock mechanism (6) to the telescoping mechanism.

4. child safety seat support base according to claim 3, it is characterised in that the stretching structure includes flexible Structural member (1.1) and lower stretching structure part (1.2), the upper stretching structure part (1.1) are rotatably connected on the support base (2) Bottom surface on, one of the ratchet bar (6.2) and pawl component (6.1) are arranged on the upper stretching structure part (1.1), separately One is arranged on the lower stretching structure part (1.2).

5. child safety seat support base according to claim 4, it is characterised in that the upper stretching structure part (1.1) For hollow pipe fitting, the lower stretching structure part (1.2) is set in the hollow pipe fitting, and can be relative to the upper flexible knot The rectilinear direction of component (1.1) is slided, and the ratchet bar (6.2) is disposed longitudinally on the inner side of the hollow pipe fitting, the ratchet Component (6.1) is arranged on the lower stretching structure part (1.2), and can be rotated relative to the lower stretching structure part (1.2).

6. child safety seat support base according to claim 5, it is characterised in that the lower stretching structure part (1.2) Lower end be additionally provided with footing (1.3), unidirectional locking status releasing switch (5) is arranged on the footing (1.3), the list It is connected with the pawl component (6.1) to lockup state cancel switch (5) by connector (1.4).

7. child safety seat support base according to claim 3, it is characterised in that and the one-way lock mechanism (6,7) Also include the first flexible member (1.5), first flexible member (1.5) can make the unidirectional locking status releasing switch (5) normally off is maintained, and after unidirectional locking status releasing switch (5) is by external force triggering, can be described in release Unidirectional locking status releasing switch (5) is made to revert to normally off during unidirectional locking status releasing switch (5).

8. child safety seat support base according to claim 5, it is characterised in that the lower stretching structure part (1.2) For the symmetrical pipe fitting of I-shaped cross section, I-shaped connected in star (1.7), the ratchet bar are provided with the both sides of the symmetrical pipe fitting (6.2) it is symmetrical to be arranged on the inside of the hollow pipe fitting position corresponding with the I-shaped connected in star (1.7), the ratchet Component (6.1) is rotatably arranged in the I-shaped connected in star (1.7) by rotating shaft.

9. child safety seat support base according to claim 1, it is characterised in that in the support base (2) and institute State and between supporting leg (1), be provided with expansion locking mechanism (3), the stretching structure includes stretching structure part (1.1) and lower flexible Structural member (1.2), the upper stretching structure part (1.1) are rotatably connected on the bottom surface of the support base (2), are stretched described Under the lock-out state of contracting locking mechanism (3), the expansion locking mechanism (3) can lock the lower stretching structure part (1.2), with Make the lower stretching structure part (1.2) relative can not slide with the upper stretching structure part (1.1), in the expansion locking mechanism (3), under released state, the expansion locking mechanism (3) can release the locking action to the lower stretching structure part (1.2), So that the lower stretching structure part (1.2) is under gravity automatically relative to upper stretching structure part (1.1) slide downward, Until supporting forced position.

10. child safety seat support base according to claim 9, it is characterised in that in the support base (2) also ISOFIX connectors (4.1) are provided with, are formed between the ISOFIX connectors (4.1) and the expansion locking mechanism (3) and can be grasped The connection of the property made, when the ISOFIX connectors (4.1) are correctly linked into vehicle mounting interface, to drive the flexible lock Determine mechanism (3) released state is switched to from standing lock-out state.

11. child safety seat support bases according to claim 9, it is characterised in that in the support base (2) also It is provided with for being connected with child safety seat, and supports the connection supporting member of the child safety seat, the connection is supported The connection of operability is formed between component and the expansion locking mechanism (3), correctly to pacify in the child safety seat Be mounted in the support base (2), and during against the connection supporting member, the expansion locking mechanism (3) is driven from standing Lock-out state switch to released state.

12. child safety seat support bases according to claim 9, it is characterised in that expansion locking mechanism (3) bag Rotating switch (3.1) and the second flexible member (3.2) are included, the rotating switch (3.1) is turned with the upper stretching structure part (1.1) Dynamic connection, second flexible member (3.2) are connected with the rotating switch (3.1), and the rotating switch (3.1) is described the The elastic force effect of two flexible members (3.2) is lower to maintain normality to be lock-out state, and described the is overcome in the presence of by external force The elastic force of two flexible members (3.2) is acted on and departs from lock-out state.

13. child safety seat support bases according to claim 10, it is characterised in that on the support base (2) also U-shaped push rod (4.5) and a pair of drive rods (4.2) are provided with, are provided with the both sides push rod section of the U-shaped push rod (4.5) multiple Draw-in groove, the bottom push rod section of the U-shaped push rod (4.5) is in the side of the expansion locking mechanism (3), the drive rod (4.2) One end and the ISOFIX connectors (4.1) between be slidably connected, the other end is provided with bulge-structure, can push away with the U-shaped Arbitrary draw-in groove clamping of the both sides push rod section of bar (4.5), is correctly linked into vehicle installation in the ISOFIX connectors (4.1) and connects During mouth, the U-shaped push rod (4.5) can be made to push up to the expansion locking mechanism (3) by promoting the support base (2), with The expansion locking mechanism (3) is promoted to switch to released state from standing lock-out state.

14. child safety seat support bases according to claim 13, it is characterised in that on the support base (2) also ISOFIX extensible members (4.3) are provided with, the ISOFIX extensible members (4.3) are fixedly connected with the ISOFIX connectors (4.1), and Can stretch out or retract relative to the support base (2), on the ISOFIX extensible members (4.3), be also equipped with multiple draw-in grooves, When the ISOFIX connectors (4.1) are not linked into vehicle mounting interface, the raised knot of the other end of the drive rod (4.2) Structure with arbitrary draw-in groove clamping of the ISOFIX extensible members (4.3), and can be worked as the ISOFIX connectors (4.1) and correctly access During to vehicle mounting interface, the bulge-structure of the drive rod (4.2) can be made to depart from institute by promoting the support base (2) State ISOFIX extensible members (4.3), and the draw-in groove clamping with the both sides push rod section of the U-shaped push rod (4.5), so as to drive the U Shape push rod (4.5) is moved to the expansion locking mechanism (3).

15. child safety seat support bases according to claim 14, it is characterised in that the bulge-structure is unidirectional convex Structure (4.2.2) is played, the 3rd elasticity unit is additionally provided between the other end of the support base (2) and the drive rod (4.2) Part (4.6), when the support base (2) does not receive thrust, the unidirectional bulge-structure (4.2.2) can be elastic the described 3rd The draw-in groove of the lower both sides push rod section for departing from the U-shaped push rod (4.5) of elastic force effect of element (4.6).

16. child safety seat support bases according to claim 3, it is characterised in that the one-way lock mechanism (7) is Unidirectional voussoir lockable mechanism, including：Serrate slot (7.1) and wedge (7.2), the wedge (7.2) with the profile of tooth The corresponding double wedge (7.3) of groove (7.1) and lozenges, be connected with the wedge (7.2) drawstring (7.4, it is 7.5), described unidirectional Lockup state cancel switch (5) and the drawstring (7.4,7.5) connect, unidirectional locking status releasing switch (5) not by During triggering, the wedge (7.2) is under gravity along lozenges slide downward so that the double wedge of the wedge (7.2) (7.3) it is embedded in the serrate slot (7.1)；When unidirectional locking status releasing switch (5) is triggered by external force, the one-way lock Only status releasing switch (5) by the drawstring (7.4,7.5) driving the wedge (7.2) along lozenges upward sliding, So that the double wedge (7.3) of the wedge (7.2) departs from the serrate slot (7.1), the one-way lock mechanism (7) is released to institute State the unidirectional locking state of telescoping mechanism.

17. child safety seat support bases according to claim 16, it is characterised in that the stretching structure includes stretching Sheepshank component (1.1) and lower stretching structure part (1.2), the upper stretching structure part (1.1) are rotatably connected on the support base (2), on bottom surface, the upper end of the lower stretching structure part (1.2) is provided with and is coordinated with the lozenges on the wedge (7.2) Wedge-like engagement face, the serrate slot (7.1) is disposed longitudinally on the inner side of the upper stretching structure part (1.1), the wedge (7.2) between the wedge-like engagement face of the serrate slot (7.1) and the lower stretching structure part (1.2).

18. child safety seat support bases according to claim 17, it is characterised in that also including guide pipe (7.6), institute State guide pipe (7.6) to be fixed on the lower stretching structure part (1.2), and the drawstring (7.4,7.5) through the guide pipe (7.6) outside of the telescoping mechanism is drawn out to, is additionally provided with and the guide pipe on stretching structure part (1.1) on described (7.6) the guide and limit groove (7.7) for coordinating, by slip energy of the guide pipe (7.6) in the guide and limit groove (7.7) Enough realize that the lower stretching structure part (1.2) is limited relative to the motion guide and extreme position of upper stretching structure part (1.1).

19. child safety seat support bases according to claim 18, it is characterised in that the one-way lock mechanism (7) Including two symmetrical wedges (7.2) of the length direction centrage along the lower stretching structure part (1.2), described in two The drawstring that wedge (7.2) is each drawn (7.4,7.5) draw from the two ends of the guide pipe (7.6) respectively, Huo Zhesuo State drawstring (7.4, draw from the either end of the guide pipe (7.6) after 7.5) connecting.