CN218805368U - ISOFIX and safety seat with prevent back device that contracts - Google Patents

Abstract

The application discloses ISOFIX and safety seat with prevent device that contracts, belong to children's safety seat technical field, ISOFIX with prevent device that contracts includes the outer tube, the interior sleeve pipe that sets up relatively the outer tube is slided, and the gear piece in the inner tube sets up, the gear piece is suitable for taking place to rotate in order to break away from the gear hole on the outer tube to first direction, interior sleeve pipe inside is equipped with trigger piece and spacing portion, the collision is in the twinkling of an eye, gear piece takes place to rotate to first direction, trigger piece moves to between spacing portion and the gear piece by initial position, thereby it avoids the outer tube to retract to prevent that the gear piece continues to rotate to first direction, safety seat includes foretell ISOFIX with prevent device that contracts, ISOFIX retracts when having prevented the collision accident, make children's safety seat jump up after ISOFIX stopping, thereby reduce the impact force that children received, protect children's advantage.

Description

ISOFIX and safety seat with prevent back device that contracts

Technical Field

The application relates to the technical field of child safety seats, in particular to an ISOFIX and safety seat with anti-retraction device.

Background

The child safety seat is formed by combining a belt assembly or flexible member with a safety buckle, an adjusting device, a connecting device and an auxiliary device (such as a portable baby bed, a baby carrying device, an auxiliary seat or a collision protection device), and is fixed on a motor vehicle by installing a clamping device on the vehicle, so that the body displacement of the child can be limited to reduce the injury to the child caused by an emergency (such as collision or sudden deceleration).

However, the existing child safety seats have the following disadvantages: when the automobile has accidents such as rear-end collision, the child safety seat moves towards the backrest of the automobile seat under the inertia of collision, and the spine of the child receives large acceleration towards the head under the action of inertia force and contact force, so that the child is injured by the acceleration.

SUMMERY OF THE UTILITY MODEL

An aim at of this application provides ISOFIX with prevent returning back the device, realizes ISOFIX when preventing the collision accident and returns back, and children's safety seat is jump up instantaneously after ISOFIX stopping to reduce the impact force that children received, protect children.

It is another object of the present application to provide a safety seat using the above ISOFIX with anti-retraction device.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: ISOFIX with prevent device that contracts, including the outer tube, relative outer tube slip the interior sleeve pipe that sets up, and set up the gear piece in the inner tube, the gear piece is suitable for and rotates in order to break away from the gear hole on the outer tube to first direction, interior sleeve pipe inside is equipped with trigger piece and spacing portion, and the collision is in the twinkling of an eye, the gear piece rotates to first direction, trigger piece by initial position move to spacing portion with between the gear piece, thereby prevent the gear piece continues to rotate to first direction and avoid the outer tube contracts.

Preferably, the triggering part is a ball, the gear part is provided with a groove suitable for fixing the ball, the ball is suitable for partially entering the groove, and the part of the ball exposed out of the groove is suitable for abutting against the limiting part.

Further preferably, a guide sleeve is arranged in the inner sleeve, and a guide rail suitable for guiding the rolling direction of the balls is arranged in the guide sleeve.

Preferably, an upper wall of the guide sleeve serves as the stopper.

Preferably, a front baffle and a rear baffle are arranged in the guide sleeve at intervals, and the ball is matched and fixed by the front baffle and the rear baffle when being at an initial position.

Preferably, the guide sleeve is mounted at an end of the inner sleeve, the shift member is provided with a protrusion extending toward the guide sleeve, the protrusion rotates upward when the shift member rotates in a first direction, the groove is formed on an upper surface of the protrusion, and a bottom of the guide rail is inclined upward in a direction approaching the groove.

Preferably, the protrusion is connected to a reset member of the shift member, the guide sleeve has an L-shaped basic shape, and the reset member is disposed obliquely below the guide rail.

Preferably, after the gear member is reset by the reset member, the ball is adapted to disengage from the groove under the action of gravity and roll back into the guide rail along the edge of the protrusion.

Preferably, the guide sleeve further comprises a bushing mounted on the outer side of the end of the inner sleeve, the bushing is suitable for sliding filling between the outer sleeve and the inner sleeve, and the guide sleeve is connected with the inner sleeve through the bushing.

The present application also provides a safety seat comprising an ISOFIX with anti-retraction as described above.

Compared with the prior art, the beneficial effect of this application lies in: in the twinkling of an eye at the bump accident, trigger the piece and move to between spacing portion and the gear piece by initial position, realize stopping gear piece and rotate and deviate from the gear hole to avoid the outer tube to retract, the safety seat stops jumping upwards in the back of moving back at ISOFIX, thereby effectively reduces the acceleration of children vertebra to head direction, protects children.

Drawings

FIG. 1 is a schematic diagram of a conventional ISOFIX structure;

FIG. 2 is a schematic structural diagram of a conventional ISOFIX retraction;

FIG. 3 is a schematic diagram of an ISOFIX structure with an anti-retraction device;

FIG. 4 is a schematic diagram of an exploded configuration of ISOFIX with an anti-retraction device;

FIG. 5 is a schematic view of a first process of installing a safety seat;

FIG. 6 is a schematic view of a second process of installing a safety seat;

FIG. 7 is a schematic view of a third process for installing a safety seat;

FIG. 8 is a schematic view of a fourth process for installing a safety seat;

FIG. 9 is a schematic diagram of the structure of ISOFIX at the moment of impact;

FIG. 10 is an enlarged schematic view of the detail A of FIG. 9;

in the figure: 01. an anchor rod; 10. an outer sleeve; 1a, gear holes; 20. an inner sleeve; 21. a first housing; 22. a second housing; 30. a gear member; 31. a convex portion; 311. a bevel; 3a, a groove; 32. a reset member; 40. a trigger; 50. a limiting part; 60. clamping teeth; 70. connecting a locking block; 71. a return tension spring; 80. a guide sleeve; 8a, a guide rail; 81. a front baffle; 82. a tailgate; 90. a bushing.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 and 2 show a conventional ISOFIX mechanism, when an accident such as a rear-end collision occurs in an automobile, an automobile seat moves forward with acceleration along with the whole automobile, according to the direction shown in fig. 1, at this time, an anchor rod 01 on the automobile applies a force moving leftward to a latch 02, at this time, because the latch 02 is rotationally connected with an inner sleeve 03 through a first rotating shaft 021 and the latch 02 is locked by a connecting lock block 04, the latch 02 has no space rotating inward relative to the inner sleeve 03, the latch 02 transmits the acting force at the anchor rod to the inner sleeve 03 through the first rotating shaft 021, so that the inner sleeve 03 moves leftward, the inner sleeve 03 drives the gear 05 to move leftward integrally through a second rotating shaft 051, at this time, the whole child safety seat moves toward the backrest of the automobile seat due to an inertia effect, so that the outer sleeve 06 moves rightward relative to the inner sleeve 03, the top of the gear 05 obtains a tendency to move rightward relative to the second rotating shaft 051, so that the gear 05 rotates, in this process, the connecting lock block 04 does not interfere with the gear 05, the gear 05 is damaged smoothly, the gear 05 is released from the top of the gear, and the head of the child is finally released from the head of the collision, and the child, the head of the collision, which is shown in the head of the collision, and the collision, which the accident is finally occurs, and the head of the child safety seat 06 is released in the head of the collision, which is shown in the collision, and the collision, which the accident is larger acceleration is shown in the head of the child safety seat.

In order to solve the problem, the present application provides an ISOFIX with a retraction prevention device, as shown in fig. 3 to 10, including an outer sleeve 10, an inner sleeve 20 slidably disposed relative to the outer sleeve 10, and a shift position member 30 disposed in the inner sleeve 20, wherein the shift position member 30 is adapted to rotate in a first direction to disengage from a shift hole 1a on the outer sleeve 10, a trigger member 40 and a limiting portion 50 are disposed inside the inner sleeve 20, and at the moment of collision, as shown in fig. 8 to 10, the shift position member 30 rotates in the first direction, the trigger member 40 moves from an initial position to a position between the limiting portion 50 and the shift position member 30, so as to prevent the shift position member 30 from continuing to rotate in the first direction, thereby preventing the outer sleeve 10 from retracting.

With reference to fig. 9, the first direction is clockwise.

More specifically, the inner sleeve 20 includes a first housing 21 and a second housing 22, the first housing 21 is connected with the second housing 22 to form an installation cavity, the shift position member 30, the triggering member 40, the limiting portion 50, the latch 60 and the connecting lock block 70 are disposed in the installation cavity, and the first housing 21 and the second housing 22 are disposed in a left-right direction and are opposite to each other, so as to facilitate installation of the shift position member 30, the triggering member 40 and other components.

When the safety seat with the above-mentioned ISOFIX is fixed to the car seat, as shown in fig. 5, the outer sleeve 10 is pulled out to the longest relative to the inner sleeve 20, the latch 60 is aligned with the anchor rod 01 on the car seat, at this time, the safety seat is pushed towards the direction of the seat back, so that the latch 60 is rotationally engaged with the vehicle-mounted ISOFIX anchor rod 01, the connecting lock block 70 moves towards the right side under the action of the return tension spring 71 to instantaneously lock the latch 60, and a state shown in fig. 6 is formed, at this time, the safety seat is continuously pushed towards the direction of the car seat back, the gear member 30 rotates towards the first direction as shown in fig. 7 to be disengaged from the gear hole 1a, the outer sleeve 10 retracts relative to the inner sleeve 20 to a state shown in fig. 8, at this time, the safety seat is already fixed with the car seat through the ISOFIX, and then the anti-turnover device is fitted, such as a support leg, an upper pull belt, etc., the safety seat is completely installed, and the child can take the safety seat and is restrained by the restraint system.

At the moment of collision, here, "the moment of collision" refers to the moment of an accident such as a rear-end collision of the automobile, as shown in fig. 8, the child safety seat has a tendency to move toward the backrest of the automobile seat under the inertia of the collision, at this time, the latch 60 is subjected to the inertia force of the instantaneous acceleration of the safety seat, under the conduction of the inertia force of the seat, the triggering member 40 at the initial position moves to between the limiting portion 50 and the shift position member 30, as shown in fig. 10, the triggering member 40 moves from the initial position shown by the dotted line to the illustrated position in the direction shown by the arrow, the upper and lower sides of the triggering member 40 respectively abut against the limiting portion 50 and the shift position member 30, so as to limit the shift position member 30 at the current position, at this time, the shift position member 30 is inserted into the shift position hole 1a as shown in fig. 9, so that the inner and outer sleeves 10 cannot move with each other, as compared with the prior art, the embodiment achieves the retraction of the outer sleeve 10 at the moment of avoiding the collision, and the safety seat jumps up instantaneously after the withdrawal of the isix, thereby effectively reducing the acceleration of the child to the head direction, and protecting the child.

Specifically, the triggering member 40 is a ball, the gear member 30 is provided with a groove 3a suitable for fixing the ball, the ball is suitable for partially entering the groove 3a, the part of the ball exposed out of the groove 3a is suitable for abutting against the limiting part 50, the outer surface of the ball is a curved surface, and the friction force applied during rolling motion is small and is not easy to wear.

More specifically, referring to fig. 4 and 10, a guide sleeve 80 is provided in the inner tube 20, and a guide rail 8a adapted to guide the rolling direction of the balls is provided in the guide sleeve 80.

Further, the upper wall of the guide sleeve 80 serves as the stopper 50. The limiting part 50 is simple in structure, and the balls are prevented from being separated from the guide sleeve 80 to cause the retraction prevention function to fail due to the fact that the balls are limited by the guide sleeve 80 in the whole process when rolling motion occurs. In other embodiments, the stop 50 may also be the upper tubular wall of the inner sleeve 20 or provided by other additional components.

In order to maintain the initial position of the balls in a normal state, such as when the vehicle is running normally or when the safety seat is mounted on the vehicle seat, a front baffle 81 and a rear baffle 82 are provided at an interval in the guide sleeve 80, and the balls are engaged and fixed by the front baffle 81 and the rear baffle 82 when in the initial position, and can roll away from the initial position only after receiving a certain threshold force at the moment of collision. The tailgate 82 covers the underside of the balls so that at the moment of impact, the balls roll over the tailgate 82.

The guide sleeve 80 is mounted on the end of the inner sleeve 20, the shift position member 30 is provided with a protrusion 31 extending toward the guide sleeve 80, the protrusion 31 rotates upward when the shift position member 30 rotates in a first direction, a groove 3a is provided on the upper surface of the protrusion 31, and the bottom of the guide rail 8a is disposed obliquely upward in a direction close to the groove 3 a. So as to guide the rolling movement of the whole ball in the obliquely upward direction.

Further, the protrusion 31 is connected to the reset member 32 of the shift position member 30, the reset member 32 is disposed obliquely, the basic shape of the guide sleeve 80 is formed into an L-shape to avoid the reset member 32, and the reset member 32 can be installed below the guide rail 8a of the guide sleeve 80 as shown in fig. 10. The structure of each component is compact, and the space of the installation cavity in the inner sleeve 20 is fully utilized.

In this embodiment, the reset member 32 is a tension spring, and has a simple structure, and the gear member 30 can be automatically reset. In other embodiments, the restoring member 32 may also be an elastic member such as a spring, a torsion spring, or the like.

As a modification, after the shift position member 30 is reset by the reset member 32, the balls are adapted to be disengaged from the grooves 3a under the action of gravity and roll back into the guide rails 8a along the edges of the protrusions 31, as shown in fig. 8 and 10, the edges of the protrusions 31 are provided with inclined surfaces 311 adjacent to the grooves 3a, and the ends of the inclined surfaces 311 are substantially flush with the rear baffle 82 or slightly higher than the rear baffle 82, so that the balls can roll obliquely upward smoothly under the inertia of collision or roll back to the initial position automatically under the action of self-gravity, thereby realizing the reset function of the balls.

This embodiment further comprises a bushing 90, the bushing 90 being mounted outside the end of the inner sleeve 20, the bushing 90 being adapted to act as a sliding packing between the outer sleeve 10 and the inner sleeve 20, the guide sleeve 80 being connected to the inner sleeve 20 via the bushing 90.

The present application also provides a safety seat comprising an ISOFIX with an anti-retraction device as described above. Therefore, the device also has the advantages of reducing the acceleration penetration injury to the children at the moment of collision and protecting the children.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. ISOFIX with prevent device that contracts, including the outer tube, relative outer tube slip arrangement's interior sleeve pipe, and set up the gear piece in the inner tube, the gear piece is suitable for to first direction take place to rotate in order to break away from the gear hole on the outer tube, its characterized in that: the inner sleeve is internally provided with a trigger part and a limiting part, the gear part rotates towards the first direction at the moment of collision, and the trigger part moves to a position between the limiting part and the gear part from an initial position so as to prevent the gear part from continuing to rotate towards the first direction and avoid the retraction of the outer sleeve.

2. The ISOFIX with retraction prevention device of claim 1, wherein: the trigger part is set as a ball, the gear part is provided with a groove suitable for fixing the ball, the ball is suitable for a part to enter the groove, and the part of the ball exposed outside the groove is suitable for abutting against the limiting part.

3. The ISOFIX with retraction prevention device of claim 2 wherein: the inner sleeve is internally provided with a guide sleeve, and a guide rail suitable for guiding the rolling direction of the ball is arranged in the guide sleeve.

4. The ISOFIX with retraction prevention device of claim 3, wherein: the upper pipe wall of uide bushing is as spacing portion.

5. The ISOFIX with retraction prevention device of claim 3, wherein: and a front baffle and a rear baffle are arranged in the guide sleeve at intervals, and the ball is matched and fixed by the front baffle and the rear baffle when being at an initial position.

6. An ISOFIX with retraction prevention device according to any of claims 3 to 5, wherein: the guide sleeve is installed at the end part of the inner sleeve, the gear piece is provided with a convex part extending towards the guide sleeve, the convex part rotates upwards when the gear piece rotates towards the first direction, the groove is formed in the upper surface of the convex part, and the bottom of the guide rail is obliquely and upwards arranged along the direction close to the groove.

7. The ISOFIX with retraction prevention device of claim 6, wherein: the convex part is connected with a resetting piece of the gear piece, the basic shape of the guide sleeve is L-shaped, and the resetting piece is obliquely arranged below the guide rail.

8. The ISOFIX with retraction prevention device of claim 7, wherein: after the gear piece is reset by the reset piece, the ball is suitable for being separated from the groove under the action of gravity and rolls back to the guide rail along the edge of the convex part.

9. The ISOFIX with retraction prevention device of claim 6, wherein: the guide sleeve is characterized by further comprising a bushing, the bushing is installed on the outer side of the end part of the inner sleeve, the bushing is suitable for sliding filling between the outer sleeve and the inner sleeve, and the guide sleeve is connected with the inner sleeve through the bushing.

10. Safety seat, its characterized in that: comprising an ISOFIX with retraction prevention device according to any of claims 1-9.

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