ISOFIX installation guide device and child safety seat

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, and includes: a guide shell, which is provided with a first opening and a second opening that are at least partially interpenetrating, and the first opening and the second opening are respectively used to guide the ISOFIX hook and the ISOFIX connecting rod to be inserted into the guide shell; 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

Technical Field

[0001] 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 Art

[0002] ISOFIX is a standardized system for connecting child restraint systems (such as child safety seats) to vehicles, including two rigid connecting hooks fixed to the vehicle, two corresponding rigid connecting rods on the child restraint system, and an anti-rollover auxiliary device (such as a top restraint or a support foot) to achieve a simpler, faster and safer fixed connection to the child safety seat.

[0003] At present, the ISOFIX rigid connecting hooks fixed on the vehicle are often set in the gap between the backrest and the seat cushion of the rear seat, which is wrapped by the soft package structure of the rear seat, and is difficult to see and touch. As a result, when installing the child seat, the operator is not only unable to accurately locate the position of the ISOFIX hook, but also finds it difficult to judge whether the ISOFIX connecting rod is correctly inserted into the ISOFIX hook, making the process of installing the child safety seat time-consuming and laborious.

[0004] Specifically, since a child safety seat needs to connect the left and right ISOFIX connecting rods to the two ISOFIX hooks on the vehicle body at the same time, in the situation where it is difficult to position and difficult to determine whether it is correctly installed as mentioned above, the operator is often unable to correctly connect the two ISOFIX connecting rods on the child safety seat to the ISOFIX hooks at the same time, causing the operator to repeatedly adjust the position of the child safety seat with considerable weight and continuously conduct trial installation.

[0005] In addition, the existing method of assembling ISOFIX connecting rods and ISOFIX hooks is blind insertion. For operators, once the ISOFIX connecting rod on the child safety seat is inserted into the gap between the backrest and the seat cushion, it is difficult to visually determine whether the ISOFIX connecting rod is installed in place. At this time, for child safety seats that lack installation reminders, it is difficult to determine whether the ISOFIX connecting rod and the ISOFIX hook are connected in place, which can easily lead to safety hazards. Summary of the invention

[0006] In view of this, the embodiments of the present disclosure provide an ISOFIX installation guide device and a child safety seat, which can promote the correct insertion between the ISOFIX connecting rod and the ISOFIX hook and improve the installation convenience of the child safety seat.

[0007] In one aspect of the present disclosure, an ISOFIX installation guide device is provided, which can guide the installation process of an ISOFIX hook and an ISOFIX connecting rod, comprising:

[0008] A guide housing is provided with a first opening and a second opening which are at least partially interpenetrating with each other, wherein the first opening and the second opening are respectively used to guide the ISOFIX hook and the ISOFIX connecting rod to be inserted into the guide housing; and

[0009] The locking hook is movably mounted inside the guide housing, and can allow the ISOFIX connecting rod to be inserted into the guide housing from the second opening only when the ISOFIX hook is inserted from the first opening to a set position in the guide housing.

[0010] In some embodiments, the locking hook is hinged to the inside of the guide housing and can rotate as the ISOFIX hook is inserted into the first opening, thereby releasing the lock on the ISOFIX connecting rod inserted into the second opening.

[0011] In some embodiments, the locking hook comprises:

[0012] A first lug protrudes radially outward relative to the hinge axis of the locking hook, and is capable of abutting against the ISOFIX hook when the ISOFIX hook is inserted into the guide housing, thereby driving the locking hook to rotate under the push of the hook; and

[0013] The second lug is located on a side of the first lug close to the second opening and extends to the second opening. As the locking hook rotates, it 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.

[0014] In some embodiments, the locking hook further comprises:

[0015] The blocking piece is located at the end of the second lug and is perpendicular to the protruding direction of the second lug, so as to expand the blocking area of ​​the second lug to the second opening.

[0016] In some embodiments, the locking hook further comprises:

[0017] The hook portion is located on a side of the first lug close to the first opening and forms a receiving space with the first lug, wherein the receiving space is used to limit the movement of the ISOFIX hook when the ISOFIX hook is inserted into a set position in the guide housing.

[0018] In some embodiments, the guide housing comprises:

[0019] a lower base plate, perpendicular to the rotation plane of the locking hook; and

[0020] An upper bottom plate, opposite to the lower bottom plate, and having a curved surface structure;

[0021] The arc surface structure can make the upper base plate smoothly transition from an end close to the first opening to an end close to the second opening.

[0022] In some embodiments, when the guide housing is in a posture where the upper base plate is on top and the lower base plate is on the bottom, the locking hook has a movement tendency to maintain at the blocking position.

[0023] In some embodiments, the center of gravity of the locking hook is located on a side of the hinge shaft close to the second opening.

[0024] In some embodiments, the guide housing comprises:

[0025] The first boss is arranged on the inner side of the upper base plate and close to the first opening, and can limit the rotation angle of the locking hook by abutting when the ISOFIX hook is not inserted into the guide housing.

[0026] In some embodiments, the ISOFIX installation guide device includes two locking hooks, which are respectively hinged to two opposite inner walls of the guide shell and can synchronously prevent the ISOFIX connecting rod from being inserted into the second opening or synchronously release the lock on the ISOFIX connecting rod being inserted into the second opening.

[0027] In some embodiments, one side of the two locking hooks close to the second opening is connected to the same blocking piece.

[0028] In some embodiments, the ISOFIX installation guide device further includes:

[0029] A wedge-shaped structure, wherein a guide groove is provided on an inclined surface of the wedge-shaped structure;

[0030] The guide groove can guide the guide housing to an installation position with the ISOFIX hook.

[0031] In some embodiments, the guide groove is detachably connected to the bottom of the guide housing so that the wedge-shaped structure can be removed after the guide housing and the ISOFIX hook are installed in place.

[0032] In some embodiments, the ISOFIX installation guide device further includes:

[0033] two of the wedge-shaped structures;

[0034] two guide housings; and

[0035] The rigid connector is fixedly connected between the pair of wedge-shaped structures and can control the spacing between the pair of wedge-shaped structures, so that the pair of ISOFIX hooks can be inserted into the pair of guide housings at the same time.

[0036] In some embodiments, the ISOFIX installation guide device further includes:

[0037] Two of the wedge-shaped oblique structures;

[0038] two guide housings; and

[0039] The flexible connector is connected between the pair of wedge-shaped structures and can control the spacing between the pair of wedge-shaped structures in a stretched state, so that the pair of ISOFIX hooks can be installed with each other and inserted into the guide housing at the same time.

[0040] In another aspect of the present disclosure, a child safety seat is provided, which can be installed to an ISOFIX hook at a vehicle seat, and includes an ISOFIX installation guide device as described in any of the above embodiments.

[0041] Therefore, according to the embodiment of the present disclosure, the ISOFIX installation guide device can promote the correct insertion between the ISOFIX connecting rod and the ISOFIX hook, and improve the installation convenience of the child safety seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0043] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0044] Figure 1 is a structural schematic diagram of an ISOFIX installation guide device, an ISOFIX hook, and an ISOFIX connecting rod in an assembled state according to some embodiments of the present disclosure;

[0045] Figure 2 is a schematic structural diagram of an ISOFIX installation guide device according to some embodiments of the present disclosure;

[0046] Figure 3 is a schematic cross-sectional structure diagram of an ISOFIX installation guide device according to some embodiments of the present disclosure;

[0047] Figure 4is a schematic cross-sectional structural diagram of an ISOFIX installation guide device and an ISOFIX hook in a preliminary connection state according to some embodiments of the present disclosure;

[0048] Figure 5 is a schematic cross-sectional structural diagram of an ISOFIX installation guide device and an ISOFIX hook in a fully connected state according to some embodiments of the present disclosure;

[0049] Figure 6 is a schematic diagram of a three-dimensional cross-sectional structure of an ISOFIX installation guide device and an ISOFIX hook in a fully connected state according to some embodiments of the present disclosure;

[0050] Figure 7 is a schematic diagram of a three-dimensional cross-sectional structure of an ISOFIX installation guide device in a fully connected state with an ISOFIX hook and an ISOFIX connecting rod according to some embodiments of the present disclosure;

[0051] Figure 8 is a schematic structural diagram of two locking hooks of an ISOFIX installation guide device according to some embodiments of the present disclosure connected to the same baffle;

[0052] Fig. 9 is a schematic diagram of the structure when two locking hooks of the ISOFIX installation guide device according to some embodiments of the present disclosure are connected to different blocking pieces;

[0053] Fig.10 is a structural schematic diagram of a connection state between a wedge-shaped structure of an ISOFIX installation guide device and a rigid connector according to some embodiments of the present disclosure;

[0054] Fig.11 is a structural schematic diagram of a connection state between a wedge-shaped structure of an ISOFIX installation guide device and a guide housing according to some embodiments of the present disclosure;

[0055] Fig.12 is a structural schematic diagram of a connection state between a guide housing and a flexible connector of an ISOFIX installation guide device according to some embodiments of the present disclosure;

[0056] Fig.13 is a schematic structural diagram of a wedge-shaped structure of an ISOFIX installation guide device according to some embodiments of the present disclosure connected to a rigid connecting rod and a guide housing connected to a flexible connector;

[0057] In the figure:

[0058] 1. ISOFIX hook;

[0059] 2. ISOFIX connecting rod;

[0060] 3. guide housing, 31. first opening, 32. second opening, 33. upper bottom plate, 34. lower bottom plate, 35. first boss;

[0061] 4. locking hook, 41. first lug, 42. second lug, 43. blocking piece, 44. hook portion;

[0062] 5. Wedge-shaped structure, 51. guide groove;

[0063] 6. Rigid connectors;

[0064] 7. Flexible connectors.

[0065] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0066] 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 present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0067] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0068] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0069] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0070] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0071] like Figures 1 to 13 As shown:

[0072] In one aspect of the present disclosure, an ISOFIX installation guide device is provided, which can guide the installation process of an ISOFIX hook 1 and an ISOFIX connecting rod 2, comprising:

[0073] The guide housing 3 is provided with a first opening 31 and a second opening 32 which at least partially penetrate each other, wherein the first opening 31 and the second opening 32 are respectively used to guide the ISOFIX hook 1 and the ISOFIX connecting rod 2 to be inserted into the guide housing 3; and

[0074] The locking hook 4 is movably mounted inside the guide housing 3 , and can allow 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 from the first opening 31 to a set position in the guide housing 3 .

[0075] The first opening 31 and the second opening 32 formed on the guide housing 3 partially penetrate each other, so that the ISOFIX hook 1 and the ISOFIX connecting rod 2 can be connected to each other in the area between the first opening 31 and the second opening 32 .

[0076] Furthermore, since the cross-sectional area of ​​the ISOFIX hook 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 hook 1 and the ISOFIX connecting rod 2, the first opening 31 and the second opening 32 preferably only need to partially penetrate each other.

[0077] In addition, the trumpet-shaped shape formed by the smaller first opening 31 and the larger second opening 32 can also facilitate the guide housing 3 to surround the ISOFIX hook 1 with the seat cushions and seat cushions on both sides, thereby smoothly extending to the location of the ISOFIX hook 1.

[0078] The locking hook 4 is used to ensure that the ISOFIX connecting rod 2 is correctly installed on the ISOFIX hook 1. Specifically, when the guide housing 3 is not correctly connected to the ISOFIX hook 1, the locking hook 4 will block the second opening 32, preventing the ISOFIX connecting rod 2 from being inserted into the guide housing 3. When the guide housing 3 is correctly connected to the ISOFIX hook 1, the locking hook 4 will allow the ISOFIX connecting rod 2 to be inserted into the guide housing 3, so that the child safety seat can be correctly installed on the seat.

[0079] Based on the function of the locking hook 4, when the operator finds that the ISOFIX connecting rod 2 cannot be inserted into the guide housing 3, the operator will naturally readjust the connection relationship between the guide housing 3 and the ISOFIX hook 1 until the locking hook 4 allows the ISOFIX connecting rod 2 to enter the second opening 32. When the first opening 31 of the ISOFIX installation guide device is connected to the ISOFIX hook 1, the second opening 32 can be exposed outside the gap between the back cushion and the seat cushion of the seat, and the operator can easily determine whether the ISOFIX hook 1 is correctly assembled with the guide housing 3 based on the position of the locking hook 4, and insert the ISOFIX connecting rod 2 into the guide housing 3 when it is correctly assembled, so as to achieve fixed installation of the child safety seat.

[0080] It can be seen that since the ISOFIX installation guide device is pre-installed before installing the child safety seat, the ISOFIX connecting rod 2 can always be connected to the ISOFIX hook 1 under the guidance of the inner cavity of the guide shell 3, avoiding the operation steps of repeatedly moving the child safety seat to adjust the position of the ISOFIX connecting rod 2, thereby greatly facilitating the operator.

[0081] like Figures 1 to 7 As shown, 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 to the inside of the guide shell 3 and can rotate as the ISOFIX hook 1 is inserted into the first opening 31, thereby releasing the lock on the ISOFIX connecting rod 2 inserted into the second opening 32.

[0082] Specifically, if Figures 3 to 5 As shown, in some embodiments, the locking hook 4 includes:

[0083] A first lug 41 protrudes radially outward relative to the hinge axis of the locking hook 4, and can abut against the ISOFIX hook 1 during the process of the ISOFIX hook 1 being inserted into the guide housing 3, thereby driving the locking hook 4 to rotate under the push of the hook; and

[0084] The second lug 42 is located on a side of the first lug 41 close to the second opening 32 and extends to the second opening 32. As the locking hook 4 rotates, it can move from a blocking position for blocking the ISOFIX connecting rod 2 from entering the second opening 32 to a passing position for releasing the blocking of the ISOFIX connecting rod 2.

[0085] The first lug 41 protrudes radially outward relative to the hinge axis of the locking hook 4, and plays a linkage role between the insertion movement of the ISOFIX hook 1 and the rotation movement of the locking hook 4; while the second lug 42 extends to the second opening 32, and plays a role in blocking or allowing passage through the second opening 32.

[0086] Furthermore, in order to better achieve the blocking effect of the second lug 42 on the second opening 32, in some embodiments, the locking hook 4 further includes:

[0087] The blocking piece 43 is located at the end of the second protruding ear 42 and is perpendicular to the protruding direction of the second protruding ear 42 , so as to expand the blocking area of ​​the second protruding ear 42 to the second opening 32 .

[0088] Further, in order to prevent the ISOFIX hook 1 from falling out after being properly connected and matched with the ISOFIX installation guide device, in some embodiments, the locking hook 4 further includes:

[0089] The hook portion 44 is located on a side of the first lug 41 close to the first opening 31 and forms a receiving space with the first lug 41 . The receiving space is used to limit the movement of the ISOFIX hook 1 when the ISOFIX hook 1 is inserted into a set position in the guide housing 3 .

[0090] Once the ISOFIX connecting rod 2 is inserted into the guide housing 3, the rotation of the second lug 42 will be restricted, thereby limiting the position of the locking hook 4, so that the hook always keeps restricting the ISOFIX hook 1, forming a double restriction with the restriction of the ISOFIX connecting rod 2 on the ISOFIX hook 1, thereby making the connection of the child safety seat safer and more reliable.

[0091] Further, in order to facilitate the insertion of the guide housing 3 into the position where the ISOFIX hook 1 is located, in some embodiments, the guide housing 3 includes:

[0092] A lower base plate 34 , perpendicular to the rotation plane of the locking hook 4 ; and

[0093] The upper bottom plate 33 is opposite to the lower bottom plate 34 and has a curved surface structure;

[0094] The arc surface structure enables the upper base plate 33 to smoothly transition from an end close to the first opening 31 to an end close to the second opening 32 .

[0095] Furthermore, in order to ensure that the second opening 32 is in a closed state when the guide shell 3 is not correctly connected to the ISOFIX hook 1, in some embodiments, when the guide shell 3 is in a posture with the upper base plate 33 on top and the lower base plate 34 on the bottom, the locking hook 4 has a movement tendency to maintain the blocking position.

[0096] Furthermore, in order to achieve the movement tendency of the locking hook 4 to maintain the blocking position, in some embodiments, the center of gravity of the locking hook 4 is located on the side of the hinge shaft close to the second opening 32. At this time, under the action of gravity, the locking hook 4 will have a tendency for the second lug 42 to move toward the lower bottom plate 34.

[0097] Further, such as Figure 4 As shown, in order to adjust the position where the second lug 42 blocks the second opening 32, in some embodiments, the guide housing 3 includes:

[0098] The first boss 35 is disposed on the inner side of the upper base plate 33 and close to the first opening 31 , and can limit the rotation angle of the locking hook 4 by abutting against the first boss 31 when the ISOFIX hook 1 is not inserted into the guide housing 3 .

[0099] Further, such as Fig. 9 As shown, in order to make the locking hook 4 have a more reliable locking ability on the ISOFIX hook 1 and a more reliable blocking effect on the ISOFIX connecting rod 2, in some embodiments, the ISOFIX installation guide device includes two locking hooks 4, and the two locking hooks 4 are respectively hinged to the two opposite inner walls of the guide shell 3, and can synchronously prevent the ISOFIX connecting rod 2 from being inserted into the second opening 32 or synchronously release the lock on the ISOFIX connecting rod 2 inserted into the second opening 32.

[0100] Further, such as Figure 8As shown, in order to improve the synchronization of the two locking hooks 4 , in some embodiments, the two locking hooks 4 are connected to the same blocking piece 43 at one side close to the second opening 32 .

[0101] Further, such as Fig.10 As shown, in order to adjust the installation height of the ISOFIX installation guide device, in some embodiments, the ISOFIX installation guide device further includes:

[0102] A wedge-shaped structure 5, wherein a guide groove 51 is provided on the inclined surface of the wedge-shaped structure 5;

[0103] The guide groove 51 can guide the guide housing 3 to the installation position with the ISOFIX hook 1 .

[0104] The wedge-shaped structure 5 can be first placed between the seat back and the seat cushion, and the installation height of the ISOFIX installation guide device can be raised according to the position of the ISOFIX hook 1 of a specific vehicle, thereby reducing the subsequent height adjustment operation of the ISOFIX guide housing 3.

[0105] Furthermore, in some embodiments, the guide groove 51 is detachably connected to the bottom of the guide housing 3 so that the wedge-shaped structure 5 can be removed after the guide housing 3 and the ISOFIX hook 1 are installed in place.

[0106] like Fig.11 As shown, further, in order to conveniently connect the two guide housings 3 to the two ISOFIX hooks 1 at the same time, in some embodiments, the ISOFIX installation guide device further includes:

[0107] Two wedge-shaped structures 5;

[0108] two guide housings 3; and

[0109] The rigid connector 6 is fixedly connected between the pair of wedge-shaped structures 5 and can control the distance between the pair of wedge-shaped structures 5 so that the pair of ISOFIX hooks 1 can be inserted into the pair of guide housings 3 at the same time.

[0110] like Figures 12-13 As shown, in some embodiments, in order to prevent the loss of the single guide housing 3, the ISOFIX installation guide device further includes:

[0111] Two of the wedge-shaped oblique structures;

[0112] two guide housings 3; and

[0113] The flexible connector 7 is connected between the pair of wedge-shaped structures 5 and can control the distance between the pair of wedge-shaped structures 5 in a stretched state, so that the pair of ISOFIX hooks 1 can be installed with each other and inserted into the guide housing 3 at the same time.

[0114] In another aspect of the present disclosure, a child safety seat is provided, which can be installed on an ISOFIX hook 1 at a vehicle seat, and includes an ISOFIX installation guide device as described in any of the above embodiments.

[0115] Therefore, 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 hook 1, and improve the installation convenience of the child safety seat.

[0116] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0117] Although some specific embodiments of the present disclosure have been described in detail by way of examples, 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 should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An ISOFIX installation guide device, capable of guiding the installation process of an ISOFIX hook and an ISOFIX connecting rod, characterized in that: include: A guide housing is provided with a first opening and a second opening which are at least partially interpenetrating with each other, wherein the first opening and the second opening are respectively used to guide the ISOFIX hook and the ISOFIX connecting rod to be inserted into the guide housing; as well as a locking hook, 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 hook is inserted from the first opening to a set position in the guide housing; Wherein, the locking hook is hinged to the inside of the guide housing and can rotate as the ISOFIX hook is inserted into the first opening, thereby releasing the lock on the ISOFIX connecting rod inserted into the second opening; Wherein, the locking hook comprises: a first lug, which protrudes radially outward relative to the hinge axis of the locking hook and is capable of abutting against the ISOFIX hook when the ISOFIX hook is inserted into the guide housing, thereby driving the locking hook to rotate under the push of the hook; and The second lug is located on a side of the first lug close to the second opening and extends to the second opening. As the locking hook rotates, it 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.

2. The ISOFIX installation guide device according to claim 1, characterized in that: The locking hook further comprises: The blocking piece is located at the end of the second lug and is perpendicular to the protruding direction of the second lug, so as to expand the blocking area of ​​the second lug to the second opening.

3. The ISOFIX installation guide device according to claim 1, characterized in that: The locking hook further comprises: The hook portion is located on a side of the first lug close to the first opening and forms a receiving space with the first lug, wherein the receiving space is used to limit the movement of the ISOFIX hook when the ISOFIX hook is inserted into a set position in the guide housing.

4. The ISOFIX installation guide device according to claim 1, characterized in that: The guide housing comprises: a lower base plate, perpendicular to the rotation plane of the locking hook; and An upper bottom plate, opposite to the lower bottom plate, and having a curved surface structure; The arc surface structure can make the upper base plate smoothly transition from an end close to the first opening to an end close to the second opening.

5. The ISOFIX installation guide device according to claim 4, characterized in that: When the guide housing is in a posture with the upper base plate on top and the lower base plate on the bottom, the locking hook has a movement tendency to maintain at the blocking position.

6. The ISOFIX installation guide device according to claim 5, characterized in that: The center of gravity of the locking hook is located on a side of the hinge shaft close to the second opening.

7. The ISOFIX installation guide device according to claim 5, characterized in that: The guide housing comprises: The first boss is arranged on the inner side of the upper base plate and close to the first opening, and can limit the rotation angle of the locking hook by abutting when the ISOFIX hook is not inserted into the guide housing.

8. The ISOFIX installation guide device according to claim 1, characterized in that: The ISOFIX installation guide device includes two locking hooks, which are respectively hinged to two opposite inner walls of the guide shell and can synchronously prevent the ISOFIX connecting rod from being inserted into the second opening or synchronously release the lock on the ISOFIX connecting rod being inserted into the second opening.

9. The ISOFIX installation guide device according to claim 8, characterized in that: One side of the two locking hooks close to the second opening is connected to the same blocking piece.

10. The ISOFIX installation guide device according to claim 1, characterized in that: The ISOFIX installation guide device also includes: A wedge-shaped structure, wherein a guide groove is provided on an inclined surface of the wedge-shaped structure; The guide groove can guide the guide housing to a mounting position with the ISOFIX hook.

11. The ISOFIX installation guide device according to claim 10, characterized in that: The guide groove is detachably connected to the lower side of the guide housing so that the wedge-shaped structure can be removed after the guide housing and the ISOFIX hook are installed in place.

12. The ISOFIX installation guide device according to claim 10, characterized in that: The ISOFIX installation guide device also includes: two of the wedge-shaped structures; two guide housings; and The rigid connector is fixedly connected between the pair of wedge-shaped structures and can control the spacing between the pair of wedge-shaped structures, so that the pair of ISOFIX hooks can be inserted into the pair of guide housings at the same time.

13. The ISOFIX installation guide device according to claim 10, characterized in that: The ISOFIX installation guide device also includes: two of the wedge-shaped structures; two guide housings; and The flexible connector is connected between the pair of wedge-shaped structures and can control the spacing between the pair of wedge-shaped structures in a stretched state, so that the pair of ISOFIX hooks can be installed with each other and inserted into the guide housing at the same time.

14. A child safety seat, which can be installed on an ISOFIX hook at a vehicle seat, characterized in that: It comprises the ISOFIX installation guide device as described in any one of claims 1 to 13.

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