CN204712917U - The blocking device of child safety seat ISOFIX system - Google Patents

Abstract

The utility model discloses a kind of blocking device of child safety seat ISOFIX system, comprise base, support, ISOFIX assembly, ISOFIX assembly comprises a pair FIX connecting rod, be connected to the cross bar between a pair FIX connecting rod, be arranged on the FIX adaptor union of FIX connecting rod front end described in every root, described blocking device also comprises the tooth bar be fixed on cross bar, be connected to the first elastic component between base and cross bar, be connected to the trailing cable on the FIX adaptor union of a pair FIX connecting rod, and comprise the first lockout mechanism, second lockout mechanism, the double locking mechanism of button and handle.The utility model carries out the locking and unlocking by double locking mechanism successively to FIX connecting rod and FIX adaptor union, the first lockout mechanism and described second lockout mechanism can be unlocked after pressing the button successively FIX connecting rod is unlocked stretch, then the handle pulling open stop button continues to press the button can be strained trailing cable and unlock FIX adaptor union, realize secondary unlocking, guarantee child safety seat the locking and unlocking process more in order with reliable, avoid the potential safety hazard that maloperation causes.

Description

Locking device of the ISOFIX system for child safety seats

technical field

The utility model relates to a locking device of a child safety seat ISOFIX system.

Background technique

ISOFIX (International Standards Organization FIX) is a standard system for fixing child seats, which is now widely used. One of the advantages of the ISOFIX system is that it provides a standardized and simple installation method for child seats. Child seats with ISOFIX connection devices can be installed on different vehicles, which is very convenient. When fixing the child safety seat through the ISOFIX system, first operate the button to extend the retractable FIX connector on the base of the child safety seat backwards and connect it with the ISOFIX interface on the car seat, and then move the base of the child safety seat toward Push back to retract the FIX connector, and lock the FIX connector and the base through the locking mechanism on the base. After the child car safety seat is fixed, the child can sit on the child car safety seat.

In the prior art, the locking mechanism of the ISOFIX system for child safety seats is relatively simple. When the unlocking mechanism is operated to make the FIX connector expandable and retractable, it is easy to disengage the FIX connector from the ISOFIX interface on the car seat at the same time by misoperation, resulting in safety problems. Hidden danger.

Contents of the invention

In order to overcome the defects of the prior art, the purpose of this utility model is to provide a locking device of the ISOFIX system for child safety seats that can avoid misoperation and is safer and more reliable, so as to improve the safety of child car safety seats and better Protect children.

In order to achieve the above object, the utility model adopts the following technical solutions:

A locking device for a child safety seat ISOFIX system, comprising a base that can be installed on a car seat, a bracket fixed on the base, an ISOFIX assembly installed on the bracket, and the ISOFIX assembly includes a pair of The FIX connecting rod that is slidably arranged on the bracket along its own length direction, the cross bar connected between a pair of the FIX connecting rods, and the FIX connector installed at the front end of each FIX connecting rod, are characterized in that It also includes:

A rack, which is fixed on the cross bar and extends forward along the sliding direction of the FIX link, and the rack can move back and forth with the cross bar and the FIX link;

a first elastic member, which is connected between the base and the cross bar so that the FIX link and the cross bar have a tendency to move forward;

a pair of pull cables, which are respectively connected to a pair of FIX connectors of the FIX linkage;

Double locking mechanism, which includes a first locking mechanism that cooperates with the rack to prevent the forward movement of the rack, a second locking mechanism that cooperates with the rack to prevent the rack from moving backward, and can be pressed down Unlock the first locking mechanism and the second locking mechanism in turn, then tighten the tow rope and unlock the button of the FIX connector and the handle that blocks the button in the middle of pressing the button.

Preferably, one side of the opposite two sides of the rack has a first tooth groove, and the other side has a second tooth groove, and the first tooth groove is composed of a plurality of helical teeth distributed forward and backward; The locking mechanism has a first locking tooth that cooperates with the first tooth groove to prevent the forward movement of the rack. The first locking mechanism has a locked state and an unlocked state. When the first locking mechanism is in the locked state, the The first locking tooth fits in the first tooth groove, and the first locking tooth disengages from the first tooth groove when the first locking mechanism is in the unlocked state; the second locking mechanism has the same function as the first locking tooth The second locking teeth are matched with two tooth grooves to prevent the rack from retreating. The second locking mechanism has a locked state and an unlocked state. When the second locking mechanism is in the locked state, the second locking teeth fit on the In the second tooth slot, the second locking tooth disengages from the second tooth slot when the second locking mechanism is in an unlocked state.

Further preferably, the button has an initial position, a first unlocking position, and a second unlocking position sequentially in its pressed movement direction, and when the button is in the initial position, the first locking mechanism and the second locking mechanism Both locking mechanisms are in the locked state; when the button is in the first unlocked position, the second locking mechanism is in the unlocked state, and the first locking mechanism is in the locked state; when the button is in the second unlocked position, Both the first locking mechanism and the second locking mechanism are in an unlocked state.

Still further preferably, the button has a third unlocking position in its pressed movement direction, when the button is in the third unlocking position, both the first locking mechanism and the second locking mechanism are in the In the unlocked state, a pair of the traction ropes are tightened simultaneously and the FIX connectors at the front ends of the pair of FIX connecting rods are all in the unlocked state.

Still further preferably, the handle has a withdrawn position and a pull-out position. When the button is in the initial position and the first unlocked position, the handle is in the withdrawn position, and the handle resists the pressing direction of the button; When the button is at the second unlocking position, the handle is at the pull-out position, and the handle is far away from the button.

In a specific embodiment, the first locking mechanism includes a first ratchet that is rotatably connected to the bracket, a first unlocking link that drives the first ratchet to rotate, and the first locking teeth are set on the first ratchet and deviate from the rotation center of the first ratchet; the second locking mechanism includes a second ratchet that is rotatably connected to the bracket, a second unlocking link that drives the rotation of the second ratchet, and the second locking tooth It is arranged on the second ratchet and deviates from the rotation center of the second ratchet; the first unlocking link and the second unlocking link are respectively connected to the buttons.

Preferably, the first ratchet and the second ratchet are respectively located on both sides of the rack and the first locking tooth and the second locking tooth sandwich the rack, the first A second elastic member is connected between the ratchet and the second ratchet to make the first locking tooth and the second locking tooth clamp the rack; The third elastic part and the fourth elastic part make the button pop up.

Preferably, the first unlocking link is movably connected between the first ratchet and the button, and the second unlocking link is movably connected to the second ratchet in the fore-and-aft direction. Between the button and the button, there are connecting holes on both sides of the button to drive the first unlocking link and the second unlocking link to move back and forth.

Further preferably, the locking device further includes a first rotating rod and a second rotating rod respectively rotated on the base; the pair of FIX connecting rods includes a left FIX connecting rod and a right FIX connecting rod, and the left FIX connecting rod On the FIX connecting rod, there is a first pulling cable that can unlock the FIX connector at the front end of the left FIX connecting rod after being tightened, the rear end of the first pulling cable is connected to the first rotating rod, and the first pulling cable A rotating rod is connected with the first unlocking link; the right FIX link has a second traction cable that can unlock the FIX connector at the front end of the right FIX link after being tightened, and the second traction cable The rear end of the second rotating rod is connected to the second rotating rod, and one end of the second rotating rod is connected to the second unlocking link.

Still further preferably, the first unlocking link is provided with a first drive hole for driving the first rotating rod to rotate, and the first rotating rod is provided with a first connection penetrating through the first driving hole. part; the second unlocking link is provided with a second driving hole for driving the second rotating rod to rotate, and the second rotating rod is provided with a second connecting part penetrating into the second driving hole; when When the button is in the initial position and the first unlocked position, there is a gap between the first driving hole and the first driving part along the front-rear direction, and there is a gap between the second driving hole and the second driving part along the front-back direction. A gap; when the button is in the second unlocking position, the first driving hole is in conflict with the first driving part, and the second driving hole is in conflict with the second driving part.

The working principle of the locking device of the ISOFIX system of the child safety seat of the utility model is as follows: when the child safety seat is installed on the ISOFIX interface of the car seat, the FIX connecting rod with the FIX connector is positioned toward the base under the action of the first elastic member. Extending out to the initial state of the outermost end, at this time the rack is locked by the first locking mechanism and the second locking mechanism and cannot move back and forth, and the FIX connecting rod cannot be pushed into the base; press the button until the button receives obvious resistance, it is At this time, the second unlocking mechanism is unlocked, and the first unlocking mechanism is still in the locked state. The FIX link can be slid in one direction and retracted into the base, so that the FIX link can be pushed into the base. At this time, the child safety seat Fix it on the car seat; after pulling out the handle and continuing to press the button, the first unlocking mechanism is also unlocked, and the rack is in a free state at this time. Outer end; continue to press the button to unlock the FIX connector at the front end of the FIX link by pulling the traction cable. At this time, the FIX connector and the ISOFIX interface on the car seat can be opened to connect the child safety seat to the car seat. The chair is separated; after the button is released, the FIX connector is automatically closed, and the rack is locked by the first locking mechanism and the second locking mechanism, returning to the initial state.

Due to the adoption of the above technical solution, the locking device of the child safety seat ISOFIX system of the present invention has the following advantages: the double locking mechanism is used to unlock the FIX connecting rod and the FIX connector in sequence, and the unlocking process is controlled through the cooperation of the button and the handle , to ensure that when the child safety seat is unlocked with the car seat, the FIX link is unlocked first and then the FIX connector can be unlocked, making the child safety seat more reliable and safe, and avoiding the misoperation that causes the FIX link and FIX security risks of simultaneous unlocking of connectors.

Description of drawings

Fig. 1 is a side view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the initial position.

Fig. 2 is a side view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the first unlocking position (the FIX link has not been retracted).

Fig. 3 is an enlarged view of part A in Fig. 2 .

Fig. 4 is a side view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the second unlocked position.

Fig. 5 is a front view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the initial position.

Fig. 6 is a rear view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the initial position (the base is removed).

Fig. 7 is a front view of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the first unlocking position (the base is removed, and the FIX link is retracted).

Fig. 8 is a front view (the base is removed) of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the second unlocked position.

Fig. 9 is a front view (the base is removed) of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the third unlocking position.

Fig. 10 is a rear view (the base is removed) of the locking device of the child safety seat ISOFIX system in this embodiment when the button is in the third unlocked position.

In the accompanying drawings: 1-base; 2-bracket; 3-FIX connecting rod; 31-left FIX connecting rod; 32-right FIX connecting rod; 4-cross bar; 5-FIX connector; 6-rack; 61- 1st tooth groove; 62-second tooth groove; 7-first elastic member; 8-traction cable; 9-button; 91-connecting hole; 10-handle; 11-first ratchet; 111-first locking tooth; 12-the first unlocking link; 121-the first drive hole; 13-the second ratchet; 131-the second locking tooth; 14-the second unlocking link; 141-the second drive hole; 15-the second elastic member; 16—the third elastic member; 17—the fourth elastic member; 18—the first rotating rod; 181—the first driving part; 19—the second rotating rod; 191—the second driving part.

Detailed ways

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to Figures 1 to 10, a locking device for a child safety seat ISOFIX system, including a base 1 that can be installed on a car seat, a bracket 2 fixed on the base 1, and an ISOFIX component installed on the bracket 2, The ISOFIX assembly includes a pair of FIX connecting rods 3 that can slide forward and backward along the length direction of itself, and a cross bar 4 that is connected between a pair of FIX connecting rods 3, and is installed on the front end of each FIX connecting rod 3. The FIX connector 5, the locking device also includes a rack 6, a first elastic member 7, a pair of pulling cables 8 and a double locking mechanism. The rack 6 is fixed on the cross bar 4 and extends forward along the sliding direction of the FIX connecting rod 3 , and the rack 6 can move back and forth with the cross bar 4 and the FIX connecting rod 3 . The first elastic member 7 is connected between the base 1 and the cross bar 4 so that the FIX connecting rod 3 and the cross bar 4 have a tendency to move forward. A pair of drag cables 8 are respectively connected to a pair of FIX connectors 5 .

The double locking mechanism includes a first locking mechanism that cooperates with the rack 6 to prevent the rack 6 from moving forward, a second locking mechanism that cooperates with the rack 6 to prevent the rack 6 from retreating, and the first locking mechanism can be unlocked sequentially after being pressed. And the second locking mechanism then tightens the pull rope 8 and unlocks the button 9 of the FIX connector 5 and the handle 10 that blocks the button 9 halfway through the button 9 push.

One side of the opposite two sides of the rack 6 has a first tooth groove 61 , and the other side has a second tooth groove 62 , and the first tooth groove 61 is composed of a plurality of helical teeth distributed front and back.

The first locking mechanism includes a first ratchet 11 that is rotatably connected to the bracket 2, and a first unlocking link 12 that drives the first ratchet 11 to rotate. The first ratchet 11 has a function to cooperate with the first tooth groove 61 to prevent the rack 6 from moving forward. The moving first locking tooth 111 is arranged on the first ratchet 11 and deviates from the rotation center of the first ratchet 11 . The first locking mechanism has a locked state and an unlocked state. When the first locking mechanism is in the locked state, the first locking tooth 111 fits in one of the helical teeth of the first tooth groove 61. When the first locking mechanism is in the unlocked state, the first locking tooth 111 111 disengages from the first tooth groove 61 .

The second locking mechanism includes a second ratchet 13 rotatably connected to the bracket 2 and a second unlocking link 14 that drives the second ratchet 13 to rotate. The second ratchet 13 has a function that cooperates with the second tooth groove 62 to prevent the rack 6 The second locking tooth 131 retreats. The second locking tooth 131 is disposed on the second ratchet 13 and deviates from the rotation center of the second ratchet 13 . The second locking mechanism has a locked state and an unlocked state. When the second locking mechanism is in the locked state, the second locking tooth 131 fits in the second tooth groove 62. When the second locking mechanism is in the unlocked state, the second locking tooth 131 disengages from the first tooth. Two cogs 62.

In this embodiment, the first ratchet 11 and the second ratchet 13 are respectively located on both sides of the rack 6 and the first locking tooth 111 and the second locking tooth 131 sandwich the rack 6, the first ratchet 11 and the second ratchet 13 is connected with a second elastic member 15 that enables the first locking tooth 111 and the second locking tooth 131 to clamp the rack 6 .

The first unlocking link 12 and the second unlocking link 14 are respectively connected with the button 9 . Specifically, the first unlocking link 12 is movably connected between the first ratchet 11 and the button 9 along the front-back direction, and the second unlocking link 14 is movably connected between the second ratchet 13 and the button 9 along the front-back direction. , the two sides of the button 9 respectively have connection holes 91 that drive the first unlocking link 12 and the second unlocking link 14 to move back and forth.

The button 9 is intersected with the handle 10 , the handle 10 is slidably mounted on the base 1 forward and backward, and the button 9 is slidably mounted on the base 1 along an oblique direction and is located above the handle 10 . The locking device further includes a third elastic member 16 for returning the handle 10 and a fourth elastic member 17 for bouncing the button 9 . When the button 9 is pressed, the button 9 slides down against the elastic force of the fourth elastic member 17 and pushes the first unlocking link 12 and the second unlocking link 14 to move forward through the connecting hole 91, and then respectively drives the first ratchet 11 and the second ratchet 13 rotate. After the button 9 is released, the button bounces back under the action of the elastic force of the fourth elastic member 17 . When the handle 10 is not in operation, due to the effect of the elastic force of the third elastic member 16, it has been blocked on the lower part of the button 9, and the push button 9 is blocked in the middle of the stroke of the button 9, so that the operable stroke of the button 9 is segmented. , only after the handle 10 is pulled out, the button 9 can continue to be pressed. After the handle 10 is released, the handle 10 automatically resets under the elastic force of the fourth elastic member 17 .

In this embodiment, the first elastic member 7 , the second elastic member 15 , the third elastic member 16 and the fourth elastic member 17 are all springs.

The locking device also includes a first rotating rod 18 and a second rotating rod 19 respectively rotated on the base 1 . A pair of said FIX connecting rods 3 comprises a left FIX connecting rod 31 and a right FIX connecting rod 32, the left FIX connecting rod 31 has a first traction cable 81 of the FIX connector 5 which can unlock the front end of the left FIX connecting rod after being tightened , the rear end of the first traction cable 81 is connected to the first rotating rod 18 , and the first rotating rod 18 is connected to the first unlocking link 12 . On the right FIX connecting rod 32, there is a second traction cable 82 of the FIX connector 5 at the front end of the right FIX connecting rod 32 that can be unlocked after being tightened, and the rear end of the second traction cable 82 is connected on the second rotating rod 19. One end of the rotating rod 19 is connected with the second unlocking link 14 .

The button 9 has an initial position, a first unlocking position, and a second unlocking position in sequence in the direction of movement in which it is pressed. The handle 10 has a retracted position and a pull-out position. When the button 9 is in the initial position and the first unlocked position, the handle 10 is in the retracted position, and the handle 10 resists the pressing direction of the button 9, as shown in Figures 1, 2 and 3. When the button 9 is in the initial position, it is in the highest state of being bounced up by the fourth elastic member, and its lower end is far away from the handle 10 in the retracted position, as shown in FIG. 1 . When the button is in the first unlocking position, it is pushed down for a certain distance, and its lower end interferes with the handle 10 in the retracted position, as shown in FIGS. 2 and 3 . When the button 9 is at the second unlocking position, the handle 10 is at the pull-out position, and the handle 10 is far away from the button 9 , as shown in FIG. 4 .

When the button 9 is at the initial position, both the first locking mechanism and the second locking mechanism are in the locked state, as shown in FIGS. 1 , 5 and 6 . Now rack 6 is locked and cannot move back and forth, FIX connecting rod 3 is in the state stretching out to the outermost end and cannot be retracted, the FIX connector at the front end of FIX connecting rod 3 can be connected with the FIX interface of the car seat.

Press the button 9 until the lower end of the button 9 touches the handle 10, the button 9 is in the first unlocked position, the second locking mechanism is in the unlocked state, and the first locking mechanism is in the locked state, as shown in Figures 2 and 7. At this time, the base 1 can be pushed to overcome the elastic force of the first elastic member, so that the FIX connecting rod 3 is retracted inwardly, and the child safety seat and the car seat are installed in place.

Pull the handle 10 to the pull-out position and continue to press the button 9. At this time, the button 9 is in the second unlocked position, and both the first locking mechanism and the second locking mechanism are in the unlocked state, as shown in FIGS. 4 and 8 . At this time, the left FIX connecting rod 31 and the right FIX connecting rod 32 protrude outwards to the outermost end under the elastic force of the first elastic member. When the child safety seat needs to be disengaged from the car seat, the button 9 is pressed, and the FIX connecting rod 3 stretches out first, and the FIX connector 5 and the FIX interface of the car seat have not yet been disengaged.

The button 9 also has a third unlocking position in its pressed movement direction. When the button 9 is in the third unlocking position, both the first locking mechanism and the second locking mechanism are in an unlocked state. A pair of traction ropes 8 are tightened at the same time and the FIX connectors 5 at the front ends of a pair of FIX connecting rods 3 are all in an unlocked state. separate.

The first unlocking link 12 is provided with a first driving hole 121 for driving the first rotating rod 18 to rotate, and the first rotating rod 18 is provided with a first connecting portion 181 passing through the first driving hole 121 . Similarly, the second unlocking link 14 is provided with a second driving hole 141 for driving the second rotating rod 19 to rotate, and the second rotating rod 14 is provided with a second connecting portion 191 passing through the second driving hole 141 .

When the button 9 is in the initial position and the first unlocking position, there is a gap between the first driving hole 121 and the first driving part 181 along the front and rear direction, and there is a gap between the second driving hole 141 and the second driving part 191 along the front and rear direction, as shown in FIG. Shown in Figures 5, 6, and 7. When the button 9 is in the second unlocking position, the first driving hole 121 is in conflict with the first driving part, and the second driving hole 141 is in conflict with the second driving part 191 , as shown in FIG. 8 . In this way, when the button 9 slides from the first unlocking position to the second unlocking position, after the first unlocking link 12 and the second unlocking link 14 move forward for a section of idle stroke, the first rotating rod 18 and the first rotating rod 18 can be driven respectively. The second turning lever 19 turns. Adopting such a design can ensure that the FIX connector is opened only after the FIX connecting rod 3 is unlocked and stretched out, thereby avoiding potential safety hazards.

The locking device of the child safety seat ISOFIX system of this embodiment adopts a double locking mechanism to ensure that the child safety seat can be separated from the car seat only after the FIX connecting rod and the FIX connector are sequentially unlocked, which can avoid the problems of the prior art. The safety hazard caused by the simultaneous unlocking of the FIX link and the FIX connector due to misoperation of the locking mechanism. Therefore, compared with the prior art, the locking device of the child safety seat ISOFIX system in this embodiment has an ingenious design, stable and reliable operation, and is safer.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model, and its purpose is to allow those familiar with this technology to understand the content of the present utility model and implement it accordingly, and cannot limit the protection scope of the present utility model. Equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (10)

1. the blocking device of a child safety seat ISOFIX system, comprise the base that can be arranged on automotive seat, the support be fixed on described base, ISOFIX assembly be on the bracket installed, described ISOFIX assembly comprises the FIX connecting rod that can arrange slidingly back and forth along its length direction for a pair on the bracket, the FIX adaptor union being connected to cross bar described in a pair between FIX connecting rod, being arranged on FIX connecting rod front end described in every root, it is characterized in that, described blocking device also comprises:

Tooth bar, it is fixed on described cross bar and direction of slip along described FIX connecting rod extends forward, and described tooth bar can seesaw with described cross bar and described FIX connecting rod;

First elastic component, described in its chien shih being connected to described base and described cross bar, FIX connecting rod and described cross bar have proal trend;

A pair trailing cable, it is connected on the FIX adaptor union of FIX connecting rod described in a pair;

Double locking mechanism, it comprises and coordinates to stop proal first lockout mechanism of described tooth bar with described tooth bar, coordinate to stop the second lockout mechanism of described rack retreats with described tooth bar, press after can unlock described first lockout mechanism successively and then described second lockout mechanism is strained described trailing cable and unlock the button of described FIX adaptor union and stop the handle of described button in the midway that described button is pressed.

2. the blocking device of child safety seat ISOFIX system according to claim 1, it is characterized in that: the side of two sides relative on described tooth bar has the first teeth groove, opposite side has the second teeth groove, and the helical teeth that described first teeth groove is distributed by multiple front and back forms; Described first lockout mechanism has with described first tooth socket fit to stop proal first locking teeth of described tooth bar, described first lockout mechanism has lock-out state and released state, described first lockout mechanism first locking teeth described in when lock-out state is engaged in described first teeth groove, and described first lockout mechanism first locking teeth described in when released state departs from described first teeth groove; Described second lockout mechanism has with described second tooth socket fit to stop the second locking teeth of described rack retreats, described second lockout mechanism has lock-out state and released state, described second lockout mechanism second locking teeth described in when lock-out state is engaged in described second teeth groove, and described second lockout mechanism second locking teeth described in when released state departs from described second teeth groove.

3. the blocking device of child safety seat ISOFIX system according to claim 2, it is characterized in that: described button has initial position, the first unlocked position, the second unlocked position successively on its sense of motion be pressed, when described button is in initial position, described first lockout mechanism and described second lockout mechanism are all in the lock state; When described button is in the first unlocked position, described second lockout mechanism is in released state, and described first lockout mechanism is in the lock state; When described button is in the second unlocked position, described first lockout mechanism and described second lockout mechanism are all in released state.

4. the blocking device of child safety seat ISOFIX system according to claim 3, it is characterized in that: described button also has the 3rd unlocked position on its sense of motion be pressed, when described button is in the 3rd unlocked position, described first lockout mechanism and described second lockout mechanism are all in released state, and trailing cable described in a pair is strained simultaneously and described in a pair, the FIX adaptor union of FIX connecting rod front end is all in released state.

5. the blocking device of child safety seat ISOFIX system according to claim 3, it is characterized in that: described handle has retrieving position and pull-out location, when described button is positioned at initial position and the first unlocked position, described handle is in retrieving position, and described handle is kept out and pressed on direction at described button; When described button is positioned at the second unlocked position, described handle is in pull-out location, described handle and described button away from.

6. the blocking device of the child safety seat ISOFIX system according to claim 1 to 5 any one, it is characterized in that: described first lockout mechanism comprises the first ratchet be rotationally connected on the bracket, the first unlocking link driving described first pawl wheel, described first locking teeth to be arranged on the first ratchet and to depart from the center of turn of described first ratchet; Described second lockout mechanism comprises the second ratchet be rotationally connected on the bracket, the second unlocking link driving described second pawl wheel, and described second locking teeth to be arranged on described second ratchet and to depart from the center of turn of described second ratchet; Described first unlocking link is connected with described button respectively with described second unlocking link.

7. the blocking device of child safety seat ISOFIX system according to claim 6, it is characterized in that: described first ratchet and described second ratchet lay respectively at the both sides of described tooth bar and described tooth bar is clipped in the middle by described first locking teeth and described second locking teeth, is connected with the second elastic component making described first locking teeth and described second locking teeth clamp described tooth bar between described first ratchet and described second ratchet; Described blocking device also comprises the 3rd elastic component making described handle return regain and the 4th elastic component making described button upspring.

8. the blocking device of child safety seat ISOFIX system according to claim 6, it is characterized in that: described first unlocking link can be connected between described first ratchet and described button with moving along the longitudinal direction, described second unlocking link can be connected between described second ratchet and described button with moving along the longitudinal direction, and the both sides of described button have the connecting bore driving described first unlocking link and described second unlocking link to seesaw respectively.

9. the blocking device of child safety seat ISOFIX system according to claim 8, is characterized in that, described blocking device also comprises the first dwang and the second dwang that rotation is respectively arranged on described base; FIX connecting rod described in a pair comprises left FIX connecting rod and right FIX connecting rod, described left FIX connecting rod has the first trailing cable of the FIX adaptor union that can unlock described left FIX connecting rod front end after being tightened up, the rear end of described first trailing cable is connected on described first dwang, and described first dwang is connected with described first unlocking link; Described right FIX connecting rod has the second trailing cable of the FIX adaptor union that can unlock described right FIX connecting rod front end after being tightened up, the rear end of described second trailing cable is connected on described second dwang, and one end of described second dwang is connected with described second unlocking link.

10. the blocking device of child safety seat ISOFIX system according to claim 9, it is characterized in that: described first unlocking link offers the first drive hole driving described first dwang to rotate, described first dwang is provided with the first connecting portion penetrating described first drive hole; Described second unlocking link offers the second drive hole driving described second dwang to rotate, described second dwang is provided with the second connecting portion penetrating described second drive hole; When described button is in initial position, the first unlocked position, described first drive hole and described first drive division have one section of space along the longitudinal direction, and described second drive hole and described second drive division have one section of space along the longitudinal direction; When described button is in the second unlocked position, described first drive hole and described first drive division inconsistent, described second drive hole and described second drive division inconsistent.