CN116714488A - ISOFIX mechanism and safety seat - Google Patents

Abstract

The invention discloses an ISOFIX mechanism and a safety seat, wherein the ISOFIX mechanism pushes against a latch when being positioned at a first position through a connecting rod, so that the latch is kept in a closed state, the reliability of connection between the ISOFIX mechanism and an automobile anchor point is facilitated, after the latch is opened by moving the connecting rod from the first position to a second position, the gear is rotated in a first rotating direction by pushing against a pushing protrusion on a gear piece through a locking part, so that the locking part passes through the locking protrusion to be clamped between the locking protrusion and the pushing protrusion, the connecting rod can be ensured to be stably positioned at the second position, the latch is kept in an opened state stably, the stability of the ISOFIX mechanism after the latch is opened or closed is improved, fewer parts are used, and the integral assembly process difficulty of the ISOFIX mechanism is lower.

Description

ISOFIX mechanism and safety seat

Technical Field

The invention relates to the technical field of vehicle accessories, in particular to an ISOFIX mechanism and a safety seat.

Background

ISOFIX (International Standards Organization FIX) refers to the structure of the connection of the child restraint system to the vehicle. The existing ISOFIX has the defects of multiple parts, complex assembly process, insufficient stability after the latch is opened or closed, and easy influence on the use safety.

Disclosure of Invention

The invention aims to provide an ISOFIX mechanism and a safety seat, which improve the stability of the ISOFIX mechanism after a latch is opened or closed, use fewer parts and have lower process difficulty in the whole assembly of the ISOFIX mechanism.

In a first aspect, the present invention provides an ISOFIX mechanism comprising an inner housing, and a latch, a link and a gear located within the inner housing;

the latch and the gear piece are respectively and rotatably connected to two ends of the inner shell;

the gear piece is provided with a locking protrusion and a pushing protrusion;

the connecting rod is positioned between the latch and the gear piece and can move between a first position and a second position relative to the inner shell, and a lock catch part is arranged at the part of the connecting rod, which is close to the gear piece;

when the connecting rod is positioned at the first position, the connecting rod is abutted against the latch so that the latch is in a closed state, and the locking part is positioned at one side of the locking protrusion far away from the pushing protrusion;

when the connecting rod moves from the first position to the second position, the connecting rod is gradually far away from the latch so that the latch is gradually switched to an open state, and the locking part pushes against the pushing protrusion so that the gear piece rotates along the first rotating direction until the locking part is clamped between the locking protrusion and the pushing protrusion.

In an alternative embodiment, the locking part is provided with a first inclined plane and/or a second inclined plane which are at an included angle and are opposite to each other, the first inclined plane is used for contacting with the pushing protrusion, and the second inclined plane is used for contacting with the locking protrusion.

In an alternative embodiment, the inner housing is provided with a first release slide, the connecting rod is provided with a raised release button, and the release button is slidably fitted to the first release slide and extends out of the inner housing.

In an alternative embodiment, the connecting rod has a first side and a second side opposite to each other, the first side being provided with the locking portion and the second side being provided with a release button.

In an alternative embodiment, a guide rod is arranged at the position of the lock release button, which is opposite to the latch, and extends along the length direction of the connecting rod;

the inner shell is provided with a rotatable two-way lock button, and the two-way lock button is provided with a penetrating guide hole;

the link is movable from the first position toward the second position when the lock release button is rotated to a position where the guide bar is aligned with the guide hole.

In an alternative embodiment, the inner housing is made of hard plastic.

In an alternative embodiment, the ISOFIX mechanism further comprises an outer housing made of a hard metal, and the outer housing is sleeved outside the inner housing.

In an alternative embodiment, an elastic member is connected between the gear member and the inner housing, the elastic member being configured to cause the gear member to have a tendency to rotate in a second rotational direction opposite to the first rotational direction.

In an alternative embodiment, the inner housing is provided with a first locking window, the gear piece is provided with a locking protrusion at a position facing away from the locking protrusion, and the locking protrusion can extend or retract the first locking window.

In a second aspect, the present invention provides a safety seat comprising an ISOFIX mechanism as described in any of the preceding embodiments.

The beneficial effects of the embodiment of the invention include:

the latch is pushed to the position, which is located at the first position, of the connecting rod, so that the latch is kept in a closed state, the reliability of connection between the ISOFIX mechanism and an automobile anchor point is facilitated, after the latch is opened by the connecting rod moving from the first position to the second position, the pushing protrusion, which is pushed to the gear piece by the locking part, enables the gear piece to rotate along the first rotation direction, so that the locking part passes through the locking protrusion to be clamped between the locking protrusion and the pushing protrusion, and thus the connecting rod can be ensured to be stably located at the second position, the latch is stably kept in an opened state, the stability of the ISOFIX mechanism after the latch is opened or closed is improved, the used parts are fewer, and the integral assembly process difficulty of the ISOFIX mechanism is lower.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of the ISOFIX mechanism of the present embodiment;

FIG. 2 is one of the partial explosion schematic diagrams of FIG. 1;

FIG. 3 is a second schematic diagram of a partial explosion of FIG. 1;

FIG. 4 is an exploded view of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the latch closure of FIG. 1 after blanking the outer housing;

FIG. 6 is a schematic cross-sectional view of the latch of FIG. 1 after blanking the outer housing;

fig. 7 is a schematic cross-sectional view of the outer case of fig. 1 at another viewing angle after blanking.

Icon: 10-an outer shell; 11-a second locking window; 12-a second lock release slideway; 20-an inner housing; 21-a first half-shell; 210-a first lock release slide; 22-a second half-shell; 23-a first locking window; 30-clamping teeth; 31-locking grooves; 32-limiting notch; 33-latch springs; 40-connecting rods; 41-a first side; 410-a latch portion; 411-first bevel; 412-a second ramp; 42-a second side; 43-connection piece; 44-release button; 45-guiding rod; a 50-gear piece; 51-latch projections; 510-cambered surface; 52-pushing the bulge; 53-locking projections; 54-an elastic member; 55-barb; 60-a first connection post; 61-a second connecting column; 63-a third connecting column; 70-two lock button.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present invention are described in detail below with reference to fig. 1 to 7. The following embodiments and features of the embodiments may be combined with each other without conflict.

The embodiment of the invention discloses an ISOFIX mechanism and a safety seat with the ISOFIX mechanism.

The ISOFIX mechanism includes an outer housing 10, an inner housing 20, a latch 30, a link 40 and a gear 50 located within the inner housing 20.

The inner housing 20 is of a rigid plastic material so that the ISOFIX mechanism as a whole is of a relatively light weight while ensuring a certain rigidity. The inner housing 20 includes a first half housing 21 and a second half housing 22 which are detachably connected, and the first half housing 21 and the second half housing 22 together enclose an installation space in which the latch 30, the link 40 and the gear 50 are movably disposed.

Specifically, the first half shell 21 and the second half shell 22 may be inserted through three connection posts, and then the outer shell 10 made of a hard metal material is sleeved outside the inner shell 20, so as to realize assembly and fixation of the inner shell 20. The connecting posts may be rivets, and the three rivets may not need to be riveted due to the fixing effect of the outer case 10 to the inner case 20.

Specifically, the three connection posts may be defined as a first connection post 60, a second connection post 61, and a third connection post 63, respectively, wherein the first connection post 60 and the second connection post 61 are respectively penetrated at both ends of the inner case 20.

The latch 30 and the gear 50 are respectively located at two ends of the inner housing 20 and rotatably sleeved on the connecting post, so that the latch 30 and the gear 50 are both rotatably connected with the inner housing 20, and the latch 30 and the gear 50 can respectively rotate around the connecting post sleeved by themselves.

Specifically, the latch 30 is sleeved on the first connecting post 60, so that the latch 30 can rotate relative to the inner housing 20, and the latch 30 can be closed or opened relative to the inner housing 20. Wherein, latch 30 is provided with locking groove 31, when the safety seat is installed on the car, operation ISOFIX mechanism and car anchor butt joint, the lockpin of car anchor department inserts in the locking groove to push against latch 30 rotation, so that latch 30 is closed, thereby with the lockpin spacing in the locking groove.

The latch 30 is further provided with a limiting notch 32, the limiting notch 32 and the locking groove are distributed at intervals around the circumferential direction of the rotation axis of the latch 30, the limiting notch 32 is mainly used for extending into the limiting notch 32 through the connecting rod 40 when the latch 30 is closed, so that the latch 30 is prevented from rotating, the latch 30 is ensured to be stably closed, and the lock pin is reliably limited.

The length extending direction of the link 40 is the same as the length extending direction of the inner housing 20, and the link 40 is located between the latch 30 and the shift element 50 and is movable relative to the inner housing 20 along its length direction between a first position and a second position.

One end of the connecting rod 40, which is close to the latch 30, is used for extending into the limit notch 32 to abut against the latch 30, at this time, the connecting rod 40 is located at the first position, so as to limit the rotation of the latch 30, and when the connecting rod 40 moves from the first position to the second position, the latch 30 is reset and reopened after the connecting rod 40 gradually exits from the limit notch 32, so that the lock pin is convenient to disassemble and assemble.

Specifically, the connecting rod 40 is provided with a connecting piece 43 near the latch 30, and the connecting piece 43 moves along with the connecting rod 40 so as to extend into the limit notch 32 to control the opening or closing of the latch 30.

A latch 30 tension spring is also connected between the part of the connecting rod 40 close to the latch 30 and the latch 30, the latch 30 tension spring is mainly used for pulling the latch 30, when the connecting rod 40 moves from the first position to the second position, the latch 30 tension spring is gradually stretched until a connecting piece 43 on the connecting rod 40 gradually exits from the limiting notch 32, and the latch 30 is pulled to rotate along the opening direction by the elastic force of the latch 30 tension spring so as to gradually switch from the closed state to the open state and keep the latch 30 in the open state; when the lock pin is gradually put into the lock groove, the latch 30 rotates along the closing direction opposite to the opening direction, and the state is gradually switched to the closing state from the opening state, so that the connecting rod 40 is pulled to move from the second position to the first position through the tension spring of the latch 30 until the connecting piece 43 on the connecting rod 40 is inserted into the limit notch 32, so that the connecting rod 40 is abutted with the latch 30, and the latch 30 is ensured to be in the closing state stably.

The gear 50 is rotatably sleeved on the second connecting post 61, the gear 50 is provided with a locking protrusion 51 and a pushing protrusion 52, the locking protrusion 51 and the pushing protrusion 52 are arranged at intervals around the circumferential direction of the rotation axis of the gear 50, and the locking protrusion 51 is closer to the latch 30 than the pushing protrusion 52.

The connecting rod 40 has a first side 41 and a second side 42 opposite to each other, and a locking portion 410 is provided at a portion of the first side 41 near the gear 50.

When the link 40 moves from the first position toward the second position, the link 40 gradually moves away from the latch 30 to gradually switch the latch 30 to the open state, and the latch portion 410 pushes against the push protrusion 52 to rotate the gear 50 in the first rotational direction until the latch portion 410 passes over the latch protrusion 51 to be caught between the latch protrusion 51 and the push protrusion 52.

In this way, when the connecting rod 40 is located at the first position, the latch 30 is pushed against, so that the latch 30 is kept in a closed state, the reliability of connection between the ISOFIX mechanism and an automobile anchor point is facilitated, when the connecting rod 40 moves from the first position to the second position, the latch 30 is opened, the pushing-against protrusion 52 on the gear 50 is pushed against by the locking part 410, so that the gear 50 rotates in the first rotation direction, the locking part 410 passes over the locking protrusion 51 to be clamped between the locking protrusion 51 and the pushing-against protrusion 52, the connecting rod 40 can be ensured to be stably located at the second position, the latch 30 is kept in an opened state, the stability of the ISOFIX mechanism after the latch 30 is opened or closed is improved, fewer parts are used, and the process difficulty of the integral assembly of the ISOFIX mechanism is lower.

In this embodiment, the latch protrusion 51 has an arc surface 510, and when the link 40 moves from the first position to the second position, if the latch protrusion 51 and the latch portion 410 are in contact, the latch portion 410 can more easily pass over the latch protrusion 51 through the sliding contact between the arc surface 510 and the latch portion 410, so as to avoid the phenomenon that the gear 50 cannot continue to rotate and the link 40 cannot continue to move due to the contact between the latch portion 410 and the latch protrusion 51.

The latch portion 410 has a first inclined surface 411, and the first inclined surface 411 is used for contacting with the pushing protrusion 52, so that when the link 40 moves from the first position to the second position, if the latch protrusion 51 contacts with the latch portion 410, the latch portion 410 can more easily pass over the latch protrusion 51 through the sliding contact between the cambered surface 510 and the latch portion 410.

A first locking window 23 is arranged on one side of the inner shell 20 in the height direction, a second locking window 11 correspondingly communicated with the first locking window 23 is also arranged on the outer shell 10, and a locking protrusion 53 is arranged on the position, opposite to the locking protrusion 51, of the gear piece 50;

when the link 40 is in the first position, the locking protrusion 53 protrudes out of the first locking window 23 and the second locking window 11. When the link 40 moves from the first position toward the second position, the pushing protrusion 52 is pushed by the locking portion 410, so that the shift member 50 rotates in the second rotation direction, and the locking protrusion 53 can be gradually retracted into the inner housing 20 through the first locking window 23 and the second locking window 11 until the link 40 is located at the second position, at which time the locking protrusion 53 is retracted into the inner housing 20.

Thus, when the ISOFIX mechanism is integrally mounted in one sleeve, the plurality of locking grooves are formed in the sleeve, so that the retraction and extension of the locking protrusions 53 can be inserted into different locking grooves, thereby realizing the locking of the ISOFIX mechanism integrally relative to the sleeve, and further locking the integral extension dimension of the ISOFIX relative to the sleeve.

The latch 30 is pushed into the latch 30 by the lock pin of the automobile anchor, so that the latch 30 can drive the connecting rod 40 to move from the second position to the first position by the latch spring 33, if the latch protrusion 51 is aligned to a latch groove, the gear 50 can rotate along the second rotation direction by the sliding contact of the first inclined surface 411 and the pushing protrusion 52, the latch protrusion gradually extends out of the first latch window 23 and the second latch window 11, meanwhile, the connecting rod 40 moves to the first position, and the latch portion 410 moves from the position between the latch protrusion 51 and the pushing protrusion 52 to the position where the latch protrusion 51 is far away from the pushing protrusion 52.

In this embodiment, the latch portion 410 further has a second inclined plane 412, the first inclined plane 411 and the second inclined plane 412 are disposed at an included angle and are opposite to each other, and the first inclined plane 411 is further away from the latch 30 relative to the second inclined plane 412, the second inclined plane 412 is used for contacting with the latch protrusion 51, and by disposing the second inclined plane 412, the latch protrusion 51 and the second inclined plane 412 can more smoothly generate relative sliding, so that the connecting rod 40 can move from the second position to the first position conveniently.

An elastic member 54 is connected between the gear member 50 and the inner housing 20, and the elastic member 54 is used for enabling the gear member 50 to have a tendency to rotate in a second rotation direction opposite to the first rotation direction, so that the locking protrusion 53 is conveniently protruded from the first locking window 23 and the second locking window 11, and is inserted into the locking groove, and locking of the ISOFIX mechanism relative to the outer sleeve is achieved.

The third connecting post 63 is disposed at a position of the second connecting post 61 away from the first connecting post 60 and is located at a side of the pushing protrusion 52 away from the locking protrusion 51, so that when the gear 50 rotates in the first rotation direction, if the rotation amount is too large, the pushing protrusion 52 abuts against the third connecting post 63, thereby limiting the rotation range of the gear 50.

The gear member 50 is provided with a barb 55, the barb 55 is located at one side of the pushing protrusion 52 away from the locking protrusion 51, a connecting part is provided inside the inner housing 20, and two ends of the elastic member 54 are respectively connected to the barb 55 and the connecting part.

In addition, a first unlocking slide 210 is provided on the first half shell 21 of the inner shell 20, and the first unlocking slide 210 penetrates through the first half shell 21, and a second unlocking slide 12 penetrating through the outer shell 10 is provided in a region corresponding to the first unlocking slide 210.

Meanwhile, a convex lock release button 44 is arranged on the second side 42 of the connecting rod 40, the lock release button 44 is in sliding fit with the first lock release slideway 210 and the second lock release slideway 12 and extends out of the inner shell 20 and the outer shell 10, and thus when the connecting rod 40 is located at the first position, the connecting rod 40 is conveniently operated by a user by pulling the lock release button 44 to enable the connecting rod 40 to move from the first position to the second position. Wherein, by providing the pushing portion on the first side 41 of the connecting rod 40 and providing the release button 44 on the second side 42 of the connecting rod 40, the space layout can be more reasonable, and the compactness of the structure can be improved.

A guide rod 45 is arranged at the position of the lock release button 44, which is opposite to the latch 30, and the guide rod 45 extends along the length direction of the connecting rod 40; the inner housing 20 is provided with a rotatable two-way lock button 70, the two-way lock button 70 being provided with a guide hole therethrough.

When the connecting rod 40 is located at the first position, the guide hole on the secondary lock button 70 is not aligned with the guide rod 45, so that even if a user pulls the release lock button 44, the connecting rod 40 cannot move towards the second position due to the fact that the secondary lock button 70 presses and limits the guide rod 45, so that the effect of limiting and preventing misoperation is achieved, and only when the release lock button 44 is pressed down, the release lock button 44 rotates to the position where the guide rod 45 is aligned with the guide hole, the connecting rod 40 moves from the first position towards the second position when the release lock button 44 is pulled again, so that the guide rod 45 slides to penetrate through the guide hole, and opening of the latch 30 is achieved.

In summary, the embodiment of the invention discloses an ISOFIX mechanism and a safety seat with the ISOFIX mechanism, wherein the latch 30 is pushed against when the connecting rod 40 is located at a first position, so that the latch 30 is kept at a closed state, the reliability of connection between the ISOFIX mechanism and an automobile anchor point is facilitated, after the latch 30 is opened by moving the connecting rod 40 from the first position to a second position, the gear 50 is rotated along a first rotation direction by pushing the pushing protrusion 52 on the gear 50 through the locking part 410, so that the locking part 410 passes over the locking protrusion 51 to be clamped between the locking protrusion 51 and the pushing protrusion 52, thus ensuring that the connecting rod 40 is stably located at the second position, further ensuring that the latch 30 is stably kept at an open state, improving the stability of the ISOFIX mechanism after the latch 30 is opened or closed, and reducing the used parts and the difficulty of the whole assembly process of the ISOFIX mechanism.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. An ISOFIX mechanism, comprising an inner shell, and a latch, a connecting rod and a gear piece which are positioned in the inner shell;

the latch and the gear piece are respectively and rotatably connected to two ends of the inner shell;

the gear piece is provided with a locking protrusion and a pushing protrusion;

the connecting rod is positioned between the latch and the gear piece and can move between a first position and a second position relative to the inner shell, and a lock catch part is arranged at the part of the connecting rod, which is close to the gear piece;

when the connecting rod is positioned at the first position, the connecting rod is abutted against the latch so that the latch is in a closed state, and the locking part is positioned at one side of the locking protrusion far away from the pushing protrusion;

when the connecting rod moves from the first position to the second position, the connecting rod is gradually far away from the latch so that the latch is gradually switched to an open state, and the locking part pushes against the pushing protrusion so that the gear piece rotates along the first rotating direction until the locking part is clamped between the locking protrusion and the pushing protrusion.

2. The ISOFIX mechanism of claim 1, wherein said latch portion is provided with a first inclined surface for contacting said push protrusion and/or a second inclined surface opposite said first inclined surface for contacting said latch protrusion.

3. The ISOFIX mechanism of claim 1, wherein said inner housing is provided with a first release slide, said link is provided with a raised release button slidably engaged with said first release slide and extending out of said inner housing.

4. The ISOFIX mechanism of claim 3, wherein said link has first and second opposite sides, said first side being provided with said latch and said second side being provided with a release button.

5. The ISOFIX mechanism according to claim 3, wherein a guide rod is arranged at a position of the lock release button, which is opposite to the latch, and extends along the length direction of the connecting rod;

the inner shell is provided with a rotatable two-way lock button, and the two-way lock button is provided with a penetrating guide hole;

the link is movable from the first position toward the second position when the lock release button is rotated to a position where the guide bar is aligned with the guide hole.

6. The ISOFIX mechanism of claim 1, wherein said inner housing is a rigid plastic material.

7. The ISOFIX mechanism of claim 6, further comprising an outer shell of a hard metal material that fits over the inner shell.

8. The ISOFIX mechanism of claim 1, wherein an elastic member is connected between said gear member and said inner housing, said elastic member being adapted to cause said gear member to have a tendency to rotate in a second rotational direction opposite said first rotational direction.

9. The ISOFIX mechanism of claim 1, wherein said inner housing is provided with a first locking window, said gear member is provided with a locking protrusion at a location facing away from said locking protrusion, said locking protrusion being capable of extending or retracting said first locking window.

10. A safety seat comprising an ISOFIX mechanism according to any one of claims 1 to 9.