CN112519645B

CN112519645B - ISOFIX installation guide device and child safety seat

Info

Publication number: CN112519645B
Application number: CN201910873179.4A
Authority: CN
Inventors: 陈仲; 邢孔誉; 刘修平
Original assignee: Zhuhai Hongdian Technology Co ltd
Current assignee: Zhuhai Hongdian Technology Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2024-12-27
Anticipated expiration: 2039-09-17
Also published as: CN112519645A

Abstract

The present disclosure relates to an ISOFIX installation guide device, which can guide the installation process of an ISOFIX hook and an ISOFIX connecting rod, comprising: a guide shell, which is provided with a first opening and a second opening that are at least partially interpenetrating, the first opening and the second opening being used to guide the ISOFIX hook and the ISOFIX connecting rod to be inserted into the guide shell respectively; and a locking hook, which is movably installed inside the guide shell, and can allow the ISOFIX connecting rod to be inserted into the guide shell from the second opening only when the ISOFIX hook is inserted from the first opening to a set position in the guide shell. In view of this, an ISOFIX installation guide device and a child safety seat provided in an embodiment of the present disclosure can promote the correct insertion between the ISOFIX connecting rod and the ISOFIX hook, and improve the installation convenience of the child safety seat.

Description

ISOFIX installs guiding device and children's safety seat

Technical Field

The present disclosure relates to the field of child safety seats, and in particular to an ISOFIX installation guide device and a child safety seat.

Background

ISOFIX is a standardized system for connecting a child restraint system (e.g., a child safety seat) to a vehicle, comprising two rigid connection hooks secured to the vehicle, two compatible rigid connection rods on the child restraint system, and an anti-roll auxiliary device (e.g., a roof restraint or support leg) for achieving a simpler, faster and safer secure attachment to the child safety seat.

ISOFIX rigid connection couple that is fixed at present on the vehicle often sets up in back and cushion crack department of back row seat, is wrapped up by the soft packet structure of back row seat, is difficult to visual and be difficult to contact, makes the operator not only unable accurate positioning ISOFIX couple's position when installing children's installation seat, is difficult to judge whether ISOFIX connecting rod and ISOFIX couple correct cartridge moreover for the process of installing children's safety seat wastes time and energy.

In particular, since one child safety seat needs to connect the ISOFIX connecting rods on the left and right sides with the two ISOFIX hooks on the vehicle body at the same time, in the case that it is difficult to position and determine whether to insert correctly as described above, the operator often cannot connect the two ISOFIX connecting rods on the child safety seat to the ISOFIX hooks at the same time at one time, so that the operator needs to repeatedly adjust the position of the child safety seat having a considerable weight, and trial installation is performed continuously.

In addition, existing means of fitting the ISOFIX bar and ISOFIX hanger employ blind insertion, and it is difficult for an operator to visually determine if the ISOFIX bar is in place once the ISOFIX bar on the child safety seat is inserted into the seam of the backrest and seat cushion of the seat. At this time, it is difficult for a child safety seat lacking an in-place reminder to determine whether the ISOFIX link and ISOFIX hanger are connected in place, easily resulting in a safety hazard.

Disclosure of Invention

In view of the above, the embodiments of the present disclosure provide an ISOFIX installation guide device and a child safety seat, which can promote correct insertion between an ISOFIX connecting rod and an ISOFIX hook, and improve the installation convenience of the child safety seat.

In one aspect of the present disclosure, there is provided an ISOFIX installation guide device capable of guiding an installation process of an ISOFIX hook and an ISOFIX connecting rod, comprising:

A guide housing provided with a first opening and a second opening which are at least partially communicated with each other, wherein the first opening and the second opening are respectively used for guiding the ISOFIX hook and the ISOFIX connecting rod to be inserted into the guide housing, and

And the locking hook is movably arranged in the guide shell and can only allow the ISOFIX connecting rod to be inserted into the guide shell from the second opening when the ISOFIX hook is inserted into the guide shell from the first opening to a set position in the guide shell.

In some embodiments, the locking catch is hinged to the interior of the guide housing and is rotatable as the ISOFIX hook is inserted into the first opening, thereby unlocking the ISOFIX bar from being inserted into the second opening.

In some embodiments, the locking catch comprises:

A first lug protruding radially outwards relative to the hinge axis of the locking hook and capable of abutting against the ISOFIX hook in the process of inserting the ISOFIX hook into the guide shell so as to drive the locking hook to rotate under the pushing of the hook, and

And the second lug is positioned on one side of the first lug, which is close to the second opening, extends to the second opening, and can move from a blocking position for blocking the ISOFIX connecting rod from entering the second opening to a passing position for releasing the blocking of the ISOFIX connecting rod along with the rotation of the locking clamping hook.

In some embodiments, the locking catch further comprises:

The blocking piece is positioned at the tail end of the second lug and is perpendicular to the protruding direction of the second lug, and is used for expanding the blocking area of the second lug to the second opening.

In some embodiments, the locking catch further comprises:

and the hook part is positioned on one side of the first lug close to the first opening and forms a containing space with the first lug, and the containing space is used for limiting the movement of the ISOFIX hook when the ISOFIX hook is inserted into the set position in the guide shell.

In some embodiments, the guide housing comprises:

a lower base plate perpendicular to the rotation plane of the locking hook, and

The upper bottom plate is opposite to the lower bottom plate and provided with a cambered surface structure;

the cambered surface structure can enable the upper bottom plate to smoothly transition from one end close to the first opening to one end close to the second opening.

In some embodiments, the locking catch has a tendency to move to remain in the blocking position when the guide housing is in a position with the upper floor up and the lower floor down.

In some embodiments, the center of gravity of the locking hook is located on a side of the hinge shaft near the second opening.

In some embodiments, the guide housing comprises:

The first boss is arranged on the inner side of the upper bottom plate and is close to the first opening, and the rotation angle of the locking clamping hook can be limited through abutting when the ISOFIX hook is not inserted into the guide shell.

In some embodiments, the ISOFIX guide device comprises two locking hooks hinged to two opposite inner walls of the guide housing respectively, and capable of synchronously preventing or synchronously unlocking the ISOFIX connecting rod from being inserted into the second opening.

In some embodiments, one side of the locking hooks, which is close to the second opening, is connected to the same baffle.

In some embodiments, the ISOFIX installation guide device further comprises:

The wedge-shaped structure is provided with a guide groove on the inclined plane thereof;

Wherein the guide slot is capable of guiding the guide housing to a mounted position with the ISOFIX hanger.

In some embodiments, the guide slot is removably attached to the underside of the guide housing to remove the wedge structure after the guide housing is in place with the ISOFIX hanger.

In some embodiments, the ISOFIX installation guide device further comprises:

Two of said wedge structures;

Two guide housings, and

And the rigid connecting piece is fixedly connected between the pair of wedge-shaped structures, and can control the distance between the pair of wedge-shaped structures, so that the pair of ISOFIX hooks are simultaneously inserted into the pair of guide shells.

In some embodiments, the ISOFIX installation guide device further comprises:

Two of said wedge-shaped ramp structures;

Two guide housings, and

And the flexible connecting piece is connected between the pair of wedge-shaped structures and can control the distance between the pair of wedge-shaped structures in a straightened state, so that the pair of ISOFIX hooks are mutually installed and simultaneously inserted into the guide shell.

In another aspect of the present disclosure, there is provided a child safety seat mountable to an ISOFIX hanger at a vehicle seat, comprising an ISOFIX installation guide as described in any of the previous embodiments.

Thus, according to the embodiments of the present disclosure, the ISOFIX installation guide device can facilitate the correct insertion between the ISOFIX connecting rod and the ISOFIX hanger, and improve the installation convenience of the child safety seat.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of an ISOFIX installation guide in an assembled state with ISOFIX hooks and ISOFIX connecting bars according to some embodiments of the present disclosure;

Fig. 2 is a schematic structural view of an ISOFIX installation guide according to some embodiments of the present disclosure;

Fig. 3 is a schematic cross-sectional structure of an ISOFIX installation guide according to some embodiments of the present disclosure;

fig. 4 is a schematic cross-sectional structure of an ISOFIX installation guide device in a preliminary connection state with an ISOFIX hook according to some embodiments of the present disclosure;

fig. 5 is a schematic cross-sectional view of an ISOFIX installation guide device in a fully connected state with an ISOFIX hook according to some embodiments of the present disclosure;

Fig. 6 is a schematic perspective sectional structure of an ISOFIX installation guide device in a fully connected state with an ISOFIX hook according to some embodiments of the present disclosure;

fig. 7 is a schematic perspective cross-sectional view of an ISOFIX installation guide in a fully connected state with ISOFIX hooks and ISOFIX connecting rods according to some embodiments of the present disclosure;

fig. 8 is a schematic view of a structure of an ISOFIX installation guide according to some embodiments of the present disclosure when two locking hooks of the ISOFIX installation guide are connected to the same flap;

Fig. 9 is a schematic view of a structure of an ISOFIX installation guide device according to some embodiments of the present disclosure when two locking hooks are connected to different flaps;

Fig. 10 is a structural schematic diagram of a wedge structure of an ISOFIX installation guide and a connection state of a rigid connection according to some embodiments of the present disclosure;

fig. 11 is a structural schematic diagram of a connection state of a wedge structure of an ISOFIX installation guide device and a guide housing according to some embodiments of the present disclosure;

Fig. 12 is a schematic structural view of a connection state of a guide housing and a flexible connection member of an ISOFIX installation guide device according to some embodiments of the present disclosure;

FIG. 13 is a schematic illustration of the wedge structure and rigid connection rod connection of an ISOFIX mounting guide and the guide housing and flexible connection of the guide housing according to some embodiments of the present disclosure;

In the figure:

1. ISOFIX couple;

2. an ISOFIX connecting rod;

3. a guide housing 31, a first opening 32, a second opening 33, an upper bottom plate 34, a lower bottom plate 35, a first boss;

4. a locking hook 41, a first lug 42, a second lug 43, a baffle plate 44 and a hook part;

5. wedge-shaped structures, 51, guide grooves;

6. A rigid connection;

7. A flexible connection.

It should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale. Further, the same or similar reference numerals denote the same or similar members.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In this disclosure, when a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

As shown in fig. 1 to 13:

In one aspect of the present disclosure, there is provided an ISOFIX installation guide device capable of guiding an installation process of an ISOFIX hanger 1 and an ISOFIX connecting rod 2, comprising:

A guide housing 3 provided with a first opening 31 and a second opening 32 which are at least partially mutually penetrated, the first opening 31 and the second opening 32 being respectively used for guiding the ISOFIX hook 1 and the ISOFIX connecting rod 2 to be inserted into the guide housing 3, and

The locking hook 4 is movably mounted inside the guide housing 3, and is capable of allowing the ISOFIX connecting rod 2 to be inserted into the guide housing 3 from the second opening 32 only when the ISOFIX hook 1 is inserted into the guide housing 3 from the first opening 31 to a set position.

The first opening 31 and the second opening 32 formed in the guide housing 3 are partially penetrated with each other, so that the ISOFIX hanger 1 and the ISOFIX connecting rod 2 can be connected with each other in a region penetrated between the first opening 31 and the second opening 32.

Moreover, since the cross-sectional area of the ISOFIX hanger 1 is much smaller than the cross-sectional area of the ISOFIX connecting rod 2, and the opening areas of the first opening 31 and the second opening 32 are respectively matched with the ISOFIX hanger 1 and the ISOFIX connecting rod 2, the first opening 31 and the second opening 32 preferably only need to be partially penetrated each other.

In addition, the shape of the flare formed by the smaller first opening 31 and the larger second opening 32 can facilitate the surrounding of the seat cushion and the seat cushion on the ISOFIX hook 1 by the two opposite sides of the guiding shell 3, so as to smoothly extend into the position of the ISOFIX hook 1.

And the locking hooks 4 are used to ensure that the ISOFIX connecting rod 2 is properly mounted on the ISOFIX hook 1. In particular, when the guide housing 3 is not properly connected with the ISOFIX hanger 1, the locking hooks 4 will block the second openings 32, preventing the ISOFIX connecting rod 2 from being inserted into the guide housing 3. And when the guide housing 3 is properly connected with the ISOFIX hanger 1, the locking hooks 4 will allow the ISOFIX connecting rod 2 to be inserted into the guide housing 3, thereby enabling the child safety seat to be properly installed on the seat.

Based on the function of the locking catch 4 described above, when the operator finds that the ISOFIX rod 2 cannot be inserted into the guide housing 3, the connection between the guide housing 3 and the ISOFIX hook 1 is naturally readjusted until the locking catch 4 allows the ISOFIX rod 2 to enter the second opening 32. When the first opening 31 of the ISOFIX guide device is connected with the ISOFIX hook 1, the second opening 32 can be exposed outside the gap between the cushion and the cushion of the seat, so that an operator can conveniently judge whether the ISOFIX hook 1 is correctly assembled with the guide shell 3 based on the visual inspection of the position of the locking hook 4, and insert the ISOFIX connecting rod 2 into the guide shell 3 when the ISOFIX is correctly assembled, thereby realizing the fixed installation of the child safety seat.

It can be seen that since the ISOFIX installation guide is previously secured before the child safety seat is installed, the ISOFIX connecting rod 2 is always connected with the ISOFIX hanger 1 under the guiding action of the inner cavity of the guiding housing 3, and the operation step of repeatedly carrying the child safety seat to adjust the position of the ISOFIX connecting rod 2 is avoided, thereby greatly facilitating the operator.

As shown in fig. 1 to 7, further, in order to achieve stable linkage between the ISOFIX hook 1 and the locking hook 4, in some embodiments, the locking hook 4 is hinged inside the guide housing 3 and can rotate with the ISOFIX hook 1 inserted into the first opening 31, so as to unlock the ISOFIX link 2 inserted into the second opening 32.

Specifically, as shown in fig. 3 to 5, in some embodiments, the locking hook 4 includes:

a first lug 41, protruding radially outwards with respect to the hinge axis of the locking hook 4, able to abut the ISOFIX hook 1 during the insertion of the ISOFIX hook 1 into the guide housing 3, so as to rotate the locking hook 4 under the pushing of the hook, and

A second lug 42, located on the side of the first lug 41 close to the second opening 32 and extending to the second opening 32, is movable with the rotation of the locking hook 4 from a blocking position blocking the movement of the ISOFIX connecting rod 2 into the second opening 32 to a passing position releasing the blocking of the ISOFIX connecting rod 2.

Wherein the first lug 41 protrudes radially outwards with respect to the hinge axis of the locking catch 4, acting as a linkage between the insertion movement of the ISOFIX catch 1 and the rotation movement of the locking catch 4, and the second lug 42 extends to the second opening 32, acting as a blocking or allowing passage for the second opening 32.

Further, in order to better achieve the blocking effect of the second lug 42 against the second opening 32, in some embodiments, the locking hook 4 further comprises:

and a blocking piece 43, located at the end of the second lug 42 and perpendicular to the protruding direction of the second lug 42, for expanding the blocking area of the second lug 42 against the second opening 32.

Further, in order to prevent the ISOFIX hook 1 from coming out after being properly connected and engaged with the ISOFIX installation guide, in some embodiments, the locking hook 4 further includes:

A hook portion 44, which is located at a side of the first lug 41 close to the first opening 31 and forms a receiving space with the first lug 41, for restricting the movement of the ISOFIX hanger 1 when the ISOFIX hanger 1 is inserted into the guide housing 3 at a set position.

Once the ISOFIX link 2 is inserted into the guide housing 3, the rotation of the second lug 42 will be limited, thereby limiting the position of the locking catch 4, so that the hook always remains limited to the ISOFIX hook 1, forming a double limitation with the limiting effect of the ISOFIX link 2 on the ISOFIX hook 1, thereby making the connection of the child safety seat more secure and reliable.

Further, to facilitate insertion of the guide housing 3 into the position of the ISOFIX hanger 1, in some embodiments, the guide housing 3 comprises:

A lower plate 34 perpendicular to the rotation plane of the locking hook 4, and

An upper base plate 33 opposite to the lower base plate 34 and having an arc surface structure;

Wherein the cambered surface structure can smoothly transition the upper bottom plate 33 from one end close to the first opening 31 to one end close to the second opening 32.

Further, to ensure that the second opening 32 is in a closed state when the guide housing 3 is not properly connected to the ISOFIX hanger 1, in some embodiments, the locking catch 4 has a tendency to move to remain in the blocking position when the guide housing 3 is in a position with the upper floor 33 up and the lower floor 34 down.

Further, to achieve a movement tendency of the locking catch 4 to remain in the blocking position, in some embodiments the centre of gravity of the locking catch 4 is located on the side of the hinge axis close to the second opening 32. At this point, under the force of gravity, the locking catch 4 will have a tendency for the second lug 42 to move towards the lower floor 34.

Further, as shown in fig. 4, to adjust the position where the second lug 42 blocks the second opening 32, in some embodiments, the guide housing 3 includes:

The first boss 35 is provided on the inner side of the upper plate 33 and is close to the first opening 31, and can limit the rotation angle of the locking hook 4 by abutting when the ISOFIX hook 1 is not inserted into the guide housing 3.

Further, as shown in fig. 9, in order to provide the locking hook 4 with a more reliable locking capability to the ISOFIX hook 1 and a more reliable blocking effect to the ISOFIX connecting rod 2, in some embodiments, the ISOFIX installation guiding device includes two locking hooks 4, and the two locking hooks 4 are hinged to two opposite inner walls of the guiding housing 3 respectively, and can synchronously prevent the ISOFIX connecting rod 2 from being inserted into the second opening 32 or synchronously release the locking of the ISOFIX connecting rod 2 inserted into the second opening 32.

Further, as shown in fig. 8, in order to improve the synchronicity of the two locking hooks 4, in some embodiments, a side of the two locking hooks 4 near the second opening 32 is connected to the same baffle 43.

Further, as shown in fig. 10, in order to adjust the installation height of the ISOFIX installation guide, in some embodiments, the ISOFIX installation guide further includes:

the wedge-shaped structure 5 is provided with a guide groove 51 on the inclined plane of the wedge-shaped structure 5;

Wherein the guide groove 51 is capable of guiding the guide housing 3 to a mounted position with the ISOFIX hanger 1.

The wedge-shaped structure 5 can be firstly placed between the backrest and the cushion of the seat, and the installation height of the ISOFIX installation guide device is increased in advance according to the position of the ISOFIX hook 1 of a specific vehicle, so that the subsequent height adjustment operation of the ISOFIX guide shell 3 is reduced.

Further, in some embodiments, the guide groove 51 is detachably connected to the underside of the guide housing 3, so that the wedge structure 5 is removed after the guide housing 3 and the ISOFIX hanger 1 are mounted in place.

As shown in fig. 11, further, in order to facilitate the connection of two of the guide housings 3 to two of the ISOFIX hooks 1 at the same time, in some embodiments, the ISOFIX installation guide device further includes:

Two of said wedge-shaped structures 5;

Two guide housings 3, and

A rigid connection member 6 fixedly connected between the pair of wedge structures 5, capable of controlling the interval between the pair of wedge structures 5, so that the pair of ISOFIX hooks 1 are simultaneously inserted into the pair of guide housings 3.

As shown in fig. 12 to 13, in some embodiments, to prevent the loss of the single guide housing 3, the ISOFIX installation guide device further includes:

Two of said wedge-shaped ramp structures;

Two guide housings 3, and

And a flexible connection member 7 connected between the pair of wedge structures 5 and capable of controlling the interval between the pair of wedge structures 5 in a straightened state, thereby allowing the pair of ISOFIX hooks 1 to be mutually installed while being inserted into the guide housing 3.

In another aspect of the present disclosure, there is provided a child safety seat mountable to an ISOFIX hanger 1 at a vehicle seat, comprising an ISOFIX mounting guide as described in any of the previous embodiments.

Thus, according to the embodiment of the present disclosure, the ISOFIX installation guide device can promote the correct insertion between the ISOFIX connecting rod 2 and the ISOFIX hanger 1, and improve the installation convenience of the child safety seat.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An ISOFIX installation guide device capable of guiding an installation process of an ISOFIX hook and an ISOFIX connecting rod, comprising:

A locking catch movably mounted inside the guide housing, capable of allowing the ISOFIX connecting rod to be inserted into the guide housing from the second opening only when the ISOFIX catch is inserted into the guide housing from the first opening to a set position in the guide housing;

Wherein the locking hook is hinged to the inside of the guide shell and can rotate along with the insertion of the ISOFIX hook into the first opening, so that the locking of the ISOFIX connecting rod inserted into the second opening is released;

Wherein, locking pothook includes:

2. The ISOFIX installation guide of claim 1, wherein the locking catch further comprises:

3. The ISOFIX installation guide of claim 1, wherein the locking catch further comprises:

4. The ISOFIX installation guide of claim 1, wherein the guide housing comprises:

a lower base plate perpendicular to the rotation plane of the locking hook, and

5. The ISOFIX mounting guide of claim 4 wherein the locking catch has a tendency to move to remain in the blocking position when the guide housing is in a position with the upper floor up and the lower floor down.

6. The ISOFIX mounting and guiding device according to claim 5, wherein the center of gravity of the locking hook is located on a side of the hinge shaft near the second opening.

7. The ISOFIX installation guide of claim 5, wherein the guide housing comprises:

8. The ISOFIX installation guide of claim 1, comprising two locking hooks hinged to two opposite inner walls of the guide housing respectively and capable of simultaneously preventing or releasing the ISOFIX connecting rod from being inserted into the second opening.

9. The ISOFIX mounting and guiding device according to claim 8, wherein one side of the locking hooks near the second opening is connected with the same baffle.

10. The ISOFIX installation guide according to claim 1, the ISOFIX installation guiding device is characterized by further comprising:

11. The ISOFIX mounting and guiding device of claim 10, wherein said guide slot is removably attached below said guide housing to remove said wedge structure after said guide housing is in place with said ISOFIX hanger.

12. The ISOFIX installation guide according to claim 10, the ISOFIX installation guiding device is characterized by further comprising:

Two of said wedge structures;

Two guide housings, and

13. The ISOFIX installation guide according to claim 10, the ISOFIX installation guiding device is characterized by further comprising:

Two of said wedge structures;

Two guide housings, and

14. A child safety seat mountable to an ISOFIX hanger at a vehicle seat, comprising an ISOFIX installation guide as claimed in any one of claims 1 to 13.