阅读说明：本技术 与儿童安全座椅一起使用的安全带固定系统 (Seatbelt retention system for use with a child safety seat ) 是由 迈克尔·施米茨 索斯滕·施福尔德 理查德·亨瑟勒 迈克尔·弗斯滕伯格 于 2018-07-18 设计创作，主要内容包括：本发明涉及一种用于儿童安全座椅(100)的固定系统(30),其包括适于与儿童安全座椅的安全带接合的第一联接装置(10),适于与车辆安全带接合的第二联接装置(20),适于固定第一和第二联接装置的轨道系统(80,85),适于存放第一或第二联接装置中的至少一个的存放系统(110),其中第一和第二联接装置配置成放置在相应的有效和无效位置中。固定系统配置成安装在儿童安全座椅的座位部分(50)中。此外,本发明涉及适于插入到联接装置中的插入舌片,以及作为具有整体式安全带夹的安全带扣的组合联接装置。(The invention relates to a securing system (30) for a child safety seat (100), comprising a first coupling device (10) adapted to engage with a belt of the child safety seat, a second coupling device (20) adapted to engage with a vehicle belt, a rail system (80,85) adapted to secure the first and second coupling devices, a storage system (110) adapted to store at least one of the first or second coupling devices, wherein the first and second coupling devices are configured to be placed in respective active and inactive positions. The securing system is configured to be mounted in a seat portion (50) of a child safety seat. Furthermore, the present invention relates to an insertion tongue adapted to be inserted into a coupling device, and a combined coupling device as a seat belt buckle with an integrated seat belt clip.)

1. An insertion tongue (21) adapted to be inserted into a coupling device (10) for securing a safety belt of a child safety seat (100), the insertion tongue (21) comprising an engagement element (22) and a coupling element (23), wherein the engagement element (22) is adapted to engage with an overlapping portion of a safety belt of a vehicle and the coupling element (23) is adapted to engage with the coupling device (10).

2. The insertion tongue (21) as claimed in claim 1, wherein the coupling device (10) is a safety belt buckle and the engagement element (22) is configured as a safety belt clip and the coupling element (23) is configured as a latch adapted to be inserted into a safety belt buckle.

3. The insert tongue (21) according to claim 1 or 2, further comprising a flexible element, wherein the insert tongue (219) is configured to be fixed to the child safety seat (100) by the flexible element.

4. A modular linkage (16) for a child safety seat comprising:

-a fixing element (14) for coupling the combined coupling device (16) to the child safety seat, and

-a coupling device (11),

wherein the coupling means (11) is adapted to engage with a tongue (12) of a harness system (15) of the child safety seat and is further adapted to engage with a lap portion of a harness (25) of a vehicle seat.

5. A combined coupling device (16) according to claim 4, wherein the coupling device (11) is a seat belt buckle, and wherein the coupling device (11) comprises an integral hook-shaped safety belt clip (113), the integral hook-shaped safety belt clip (113) being adapted to engage with an overlapping portion of a safety belt (25) of a vehicle seat.

6. A combination coupling (16) according to claim 5 further comprising a release button for releasing the tongue (12) upon activation, wherein the safety belt clip (113) is integrated into the release button of the safety belt buckle.

Technical Field

The present invention relates to a harness attachment system for a child safety seat. In particular, the invention relates to a fixation system comprising different coupling means suitable for young children as well as older children.

Background

Small children, such as infants or young children, are securely fastened to their safety seats which are mounted on the passenger seats of vehicles and which are provided with special child restraint systems, such as integrated safety belt systems. For this age group, the safety seat is the safest travel mode using a five-point harness and a safety buckle as the coupling device. The five-point belt of the safety seat can firmly fix the shoulder and the hip on the seat. However, for older children, child restraint systems should meet the ever expanding demands for flexibility and mobility.

An older child may use a three-point adult harness with a high back seat because it is possible to position the three-point adult harness correctly over the child's body. However, when a child is moving around, the adult belt may not be properly positioned in the pelvic region. An additional belt clip coupled to the seat portion of the child safety seat and engaging the lap portion of the three-point harness may assist in securing the lap portion of the harness to the pelvic region. The belt clip serves as a fourth attachment point for a standard three-point adult passenger seat belt.

Such a safety belt clip is described in EP3031664a 1. The safety belt clip includes a guide member having an engagement element and a positioning member. The positioning means is adapted to position the engaging element at a distance from the seat part and the engaging element is adapted to engage with the lap portion of the three-point safety belt. Furthermore, the guide element is configured to drive the lap portion of the harness towards the pelvic region of an older child secured in the child safety seat with a three-point harness.

The modular child seat may combine different safety systems for small and older children in one seat. When used with small children, the integrated harness system of the combination child seat is used to secure the child. The integrated harness may be a three-point or five-point harness. The three-point harness includes two shoulder straps. A tongue is connected to one end of each shoulder strap and adapted to be fastened to a seat belt buckle. The other end of each shoulder strap is fixedly coupled to the combination child seat. The five-point harness also includes two straps. One end of each strap is connected to the seat portion of the combination child seat. A buckle tongue is slidably connected to each strap. The buckle tongue is inserted into the buckle of the safety belt to fix the child. The strap portion extending from the seat portion to the buckle tongue is guided through the thigh of the child. The strap portion extending from the buckle tongue to the combined child seat back is guided across the shoulder of the child. When the child grows a little, it is fixed in the combined child seat by the safety belt of the vehicle. The integrated seat belt system may then be retracted. The combination child seat may be used for a wider range of child ages.

Object of the Invention

It is an object of the present invention to provide a combination of different safety systems for combining child seats.

This object is achieved by a fixing system according to claim 1, by an insertion buckle according to claim 10 and by a modular coupling device according to claim 13. Further advantageous embodiments of the invention are indicated in claims 2-9, 11, 12 and 14, 15.

According to a first aspect of the present invention there is provided a securing system for a child safety seat, the securing system comprising a first coupling device adapted to engage with a harness of the child safety seat, a second coupling device adapted to engage with a harness of a vehicle, a securing device adapted to secure the first and second coupling devices, and a storage system adapted to store at least one of the first coupling device or the second coupling device. The first coupling means are configured to be placed in a respective active (active) position, in which the first coupling means are secured by the securing system and placed in a position of engagement with the safety belt of the child safety seat, and in a respective inactive (inactive) position, in which the first coupling means are stored in the storage system. The second coupling means are configured to be placed in a respective active position, in which they are secured by the securing system and are placed in a position of engagement with the safety belt of the vehicle, and in a respective inactive position, in which they are stored in the storage system. The securing system is configured to be mounted to a seat portion of a child safety seat. Since each of the first and second coupling devices can be placed in the active and inactive positions, the child safety seat is easily adaptable to small-age children as well as older children and has an extended service life. For small children, the securing system is used with the first coupling means in an active position to engage with the harness of the child safety seat. In this case, the second coupling device may be stored in the storage system. Older children are too tall to be secured with the integrated harness system of the child safety seat. In this case, the fixing system is used with the second coupling means in the active position. The first coupling means may be stored in the storage system and thus in an inactive position. In this configuration, the child may be secured by the seat belt of the vehicle. In this case, the seat belt of the vehicle is engaged with the second coupling device. This ensures that the lap portion of the harness is properly secured across the child's pelvic region. The storage system allows for easy storage of at least one of the first or second coupling devices. Since the storage system is part of the securing system, a storage space for unused coupling devices can be easily obtained. There is no need to store the inactive (i.e. unused) coupling device or coupling devices away from the active coupling device. Thus, the risk of loss of one of the coupling devices is reduced. Since the securing system is configured to be mounted in the seat portion of the child safety seat, all operations for changing from a configuration with an active first coupling means to a configuration with an active second coupling means (and vice versa) are in the field of view of the user. This means that the coupling device can be transferred conveniently to the active position and can be easily stowed and transferred to the inactive position. The range of the above operation is limited to a small spatial range. Furthermore, if the coupling means are not correctly placed in the active or inactive position, the child safety seat cannot be used. Misalignment of the coupling means or incorrect storage of the coupling means can have a direct adverse effect on the seat portion of the child safety seat. This may hinder the user from placing the child on the child safety seat.

Preferably, the securing system is configured such that the first coupling means is in the active position when the second coupling means is in the inactive position; and the securing system is configured such that the second coupling device is in the active position when the first coupling device is in the inactive position. The effect is to guide the user to use one of the safety systems all the time and to secure the child in the child safety seat.

Advantageously, the storage system is adapted to store the first coupling means and the second coupling means simultaneously. Preferably, the storage system comprises two pockets; the first recess is adapted to store a first coupling means and the second recess is adapted to store a second coupling means. An advantage of storing the first and second coupling means in the storage system is that the child safety seat can be used as a high back booster for older children. In this case, the child is secured by the seat belt of the vehicle. For older children, the use of a second coupling means, such as a safety belt clip, may no longer be required. A storage system adapted to store two coupling means together has the additional advantage that when the child safety seat is used as a high back booster seat without the second coupling means/safety belt clip, the risk of any coupling means being lost is reduced.

Alternatively, the storage system is adapted to store only either the first coupling device or the second coupling device at the same time. Since the storage system is adapted to store the first coupling means or the second coupling means, the user is guided to apply at least one coupling means and to secure the child to the safety seat by securing the safety belt of the child safety seat or the safety belt of the vehicle. In addition, the size of the storage system may also be reduced.

Advantageously, the first coupling means and the second coupling means are coupled by a coupling mechanism such that moving the first coupling means to the active position causes the second coupling means to move to the inactive position and vice versa. Preferably, the coupling mechanism is adapted to drive the first coupling means to the active position when the second coupling means is moved to the inactive position and to drive the second coupling means to the active position when the first coupling means is moved to the inactive position. Preferably, the coupling means comprise a pulling element, advantageously a belt, a wire or a chain, or a pushing element or a lever. This has the following advantages: automatically moving one coupling device moves the other coupling device in the opposite direction. Since the displacement of the two coupling means is coupled by the coupling mechanism, the movement of one coupling by the user is sufficient to bring the other coupling in the correct position. Handling of the fixation system is easier and faster.

Advantageously, the fixing device comprises a rail system, wherein the first and second coupling devices each transition along the rail system between a respective active position and a respective inactive position. Preferably, the rail system comprises a first rail and a second rail, wherein the first rail is adapted to secure only the first coupling means and the second rail is adapted to secure only the second coupling means. The rail has the advantage that the coupling device remains connected to the rail system. The risk of losing an ineffective coupling is greatly reduced. Furthermore, the track facilitates the movement of the coupling device from the active position to the inactive position and vice versa. The process becomes more intuitive. Furthermore, it is ensured that the first coupling means are placed in the correct position. It is further ensured that the second coupling means are placed in the correct position. As the first coupling means are adapted for use with a safety belt system of a child safety seat, a fastening system with an effective first coupling means is preferred for small children. An effective second coupling device is for older children. It is therefore further advantageous when the fixing system of the invention is used in a child safety seat, that the effective first coupling means are located closer to the backrest of the child safety seat than the effective second coupling means. As children grow, they take up more space on the seating area of the child safety seat. Thus, it is advantageous that the effective second coupling means is located further away from the backrest of the child safety seat than the effective first coupling means. This allows to accommodate different sizes and ages of children occupying a child safety seat equipped with the fixing system of the invention.

The fixture/rail system may further comprise a rail adapted to secure the first and second coupling devices. This has the advantage that the production process of the child safety seat is simpler.

Alternatively, the securing means comprises one or more slots. Preferably, the fixing means comprises two slots, a first slot adapted to fix the first coupling means and a second slot adapted to fix the second coupling means. The first or second coupling means may be fixed in the fixing means by hinging them into the corresponding slots. A groove adapted to secure the first and second coupling means may also be used.

Advantageously, the first coupling means is a seat belt buckle adapted to engage with a seat belt buckle tongue of a child safety seat, and the second coupling means is a seat belt clip adapted to engage with a lap portion of a seat belt of a vehicle seat. This has the following advantages: the young child is fixed by engaging the five-point belt of the child safety seat in the belt buckle, and the old child is fixed by engaging the lap portion of the three-point belt of the vehicle seat in the belt clip.

Preferably, the securing system further comprises at least one lid adapted to cover the storage system. When in the closed position, the at least one cover ensures that the seating area of the child safety seat is completely covered. That is, when the child safety seat is used with the securing system of the present invention, the comfort of a child sitting in the child safety seat is not affected by the storage system. Advantageously, the first or second coupling means are locked in the active position when the at least one lid is closed. Preferably, the at least one cover locks the first or second coupling means in an active position to prevent lateral movement. This has the following advantages: the effective engagement means is secured and does not become inadvertently dislodged. Furthermore, the user is guided to close at least one lid of the storage system in order to comfortably use the child safety seat and thus to fix the coupling means in their active position. If the storage system comprises two or more recesses, the fixation system preferably comprises two or more lids, each lid being adapted to cover a respective recess.

Advantageously, the securing means is configured such that the effective position of the first coupling means is remote from the effective position of the second coupling means to accommodate children of different ages and sizes. This configuration of the fixation device allows for different sizes and ages of children. While the arrangement with the first coupling means being effective is for small children, the arrangement with the second coupling means is for older children. In particular, the arrangement of the second coupling means further away from the backrest of the child safety seat than the first coupling means allows for sufficient space on the seat portion of the child safety seat for an older child when the securing system is mounted on the child safety seat.

Advantageously, the coupling means may be of different lengths to accommodate children of different ages and sizes. Preferably, the second coupling means is longer than the first coupling means. This also gives older children more flexibility and space. Furthermore, the coupling means advantageously comprises adjustment means, such as adjustable straps, which may be included in the adjustment means to accommodate children of different ages and sizes. One advantage is that the harness can be adjusted to the child to provide greater comfort and protection.

According to another aspect of the invention, there is provided an insertion tongue adapted to be inserted into a coupling device for securing a safety belt of a child safety seat, the insertion tongue comprising an engagement element and a coupling element, wherein the engagement element is adapted to engage a lap portion of the safety belt of a vehicle and the coupling element is adapted to engage with the coupling device. The coupling means for securing the safety belt of the child safety seat is preferably a safety belt buckle of a safety belt system. Preferably, the insertion tongue is configured as a safety belt clip adapted to be inserted into a safety belt buckle. One advantage is that the coupling does not need to be disassembled and stowed in order for the child safety seat to be used with the seat belt of the vehicle. Since the insertion tongue can be inserted into the coupling device, no cumbersome switching of the child seat is required. It is sufficient that the insertion tongue is inserted into the coupling device. In this configuration, the child safety seat may still be used even with older children. The coupling element of the insertion tongue is preferably a latch. The coupling element may be inserted into the coupling device. The coupling means preferably comprise a groove for receiving the coupling element of the insertion tongue. The engaging element of the insertion tongue is adapted to receive the lap portion of the vehicle seat belt. Thus, the engagement element ensures that the lap portion of the safety belt is properly guided through the pelvic region of the occupant of the child safety seat. The insertion tongue is advantageously configured to be removed from the coupling device by activating a release button of the coupling device. Advantageously, the insertion tongue is configured to be adjusted by a rotational or linear movement. This allows the insertion tongue to adapt to the geometry of the seat belt and to the size and age of the passenger.

Another advantage of the insertion tongue according to the invention is that the life time of the child safety seat is extended and the child safety seat can be used over a wider range of child ages without the need to replace the safety belt buckle fixed to the seating surface. Another advantage is that the belt clip can be placed at a higher position than the buckle to better accommodate the higher size of older children.

Advantageously, the insertion tongue is fixed to the child safety seat by means of a flexible element. One advantage is that the insertion tongue is permanently attached in the vicinity of the coupling device. It cannot be easily lost.

According to another aspect of the invention, a combination coupling for a child safety seat is provided, comprising a fixing element for coupling the combination coupling to the child safety seat, and a coupling device, wherein the coupling device is adapted to engage with a tongue of a harness system of the child safety seat and is further adapted to engage with a lap portion of a harness of a vehicle seat. One advantage is that the coupling means adapted to engage with the safety belt of the child safety seat and the coupling means adapted to engage with the safety belt of the vehicle are integrated into one combined coupling means. Thus, there is no need to exchange, store, displace or activate different engagement means.

Advantageously, the coupling means is a safety belt buckle adapted to engage with a buckle tongue of a safety belt of a child safety seat, and the coupling means comprises an integral safety belt clip adapted to engage with an overlapping portion of the safety belt of the vehicle seat. Preferably, the coupling means comprises a slot for receiving the seat belt tongue. One advantage is that the safety belt buckle of the child safety seat and the safety belt clip engaged with the lap portion of the safety belt of the vehicle seat are integrated into one device.

Advantageously, the combined coupling is configured to be adjusted by rotational or linear movement. This allows the combined coupling to adapt to the geometry of the safety belt and the size and age of the passenger. Preferably, this allows the combined coupling to be closer to the occupant of the child safety seat when used in the child safety seat. Furthermore, this allows the geometry of the vehicle seat belt and the seat belt to be adjusted according to the size and age of the child.

Advantageously, the combination coupling further comprises a release button for releasing the tongue upon activation, wherein the seat belt clip is integrated in the release button of the seat belt buckle. This allows the harness or harness to be released directly with a single grip, for example to take a child out of the seat in an emergency following an accident.

Advantageously, the safety belt buckle comprises a protective cover to prevent dirt or dust from entering the safety belt buckle. One advantage is that there is less dirt or dust entering the seat belt buckle that might otherwise be unprotected. This is particularly advantageous when a safety belt clip of the combi-coupling device is used. In this configuration, the integrated harness of the child safety seat may be stowed. If the cover is not used, the slot for inserting the seat belt tongue will remain open.

Another aspect of the invention relates to a child safety seat comprising a fixing system of the invention, an insertion tongue of the invention or a combination coupling of the invention.

Drawings

Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 shows a child safety seat with an effective seat belt buckle;

figure 2a shows a seat belt buckle;

FIG. 2b shows a safety belt clip;

FIG. 2c shows a first embodiment of the binding of the present invention;

FIG. 2d shows a first embodiment of a securing system with an effective buckle arrangement;

FIG. 2e shows the binding system of the present invention in an arrangement with an active safety belt clip;

FIG. 3a shows a second embodiment of the binding of the present invention having an arrangement of active seat belt buckles in the binding;

FIG. 3b shows the configured fixation system of FIG. 3a with an open storage system;

FIG. 3c shows a binding system having an arrangement of an active safety belt clip with an open storage system;

FIG. 3d shows the configured securing system of FIG. 3c with a closed storage system;

FIG. 4a shows an alternative embodiment of a fastening system with an effective buckle;

FIG. 4b illustrates an alternative embodiment of the binding system of FIG. 4a with an active safety belt clip;

FIG. 5a shows a coupling mechanism with an effective buckle;

FIG. 5b shows the coupling mechanism with an active safety belt clip;

6a,6b,6c show a variant of the rail system and storage system with one rail and two pockets;

6d,6e show a variation of the track and storage system of FIGS. 6a,6b,6c, including a linkage mechanism;

figures 7a,7b,7c show another variant of a rail system and storage system with two rails and two pockets;

figures 7d,7e show a variation of the track and storage system of figures 7a,7b,7c, including a linkage mechanism;

figures 8a,8b show a further variant of the rail system and storage system with a Y-shaped rail system and one pocket;

8c,8d illustrate a variation of the track and storage system of FIGS. 8c,8d, including a linkage mechanism;

figures 9a,9b,9c show a variant of the rail system and storage system with a Y-shaped rail system and two pockets;

FIG. 10a shows a conventional buckle tongue of a harness system of a child safety seat;

fig. 10b shows an insertion tongue of the invention;

figure 11a shows a combination coupling engaged with a child harness;

figure 11b shows the combination coupling engaged with the lap portion of the seat belt.

Detailed Description

Fig. 1 shows a child safety seat 100 according to the invention equipped with a fixing system 30 for a safety belt, which fixing system 30 comprises a first coupling means 10 and a second coupling means 20. The child safety seat 100 includes a seat portion 50 and a backrest 60. The seat portion 50 and the backrest 60 may be separate components or integrally formed. The securing system 30 is mounted in the seat portion 50 of the child safety seat 100.

The first coupling means 10 shown in fig. 1 is a safety belt buckle intended for use with the safety belt of a child safety seat 100. The second coupling device 20 is a belt clip intended for use with a lap portion of a seat belt of a vehicle seat. The harness and harness are not shown in figure 1.

The fixation system 30 further comprises fixation means 80,85 adapted to receive and anchor the first coupling means 10 and the second fixation means 20. The fixing means 80,85 shown in fig. 1 are given by a first slot 80 and a second slot 85. The first coupling device 10 shown in fig. 1 comprises a first engaging element 101 and a first positioning element 102. Details of the first coupling device 10 are described below with reference to fig. 2 a. The first coupling device 10 is attached to the first socket board 70. The first socket plate 70 ensures that the first coupling device 10 can be securely fixed in the first groove 80. When secured in the first groove 80, the first coupling means 10 is in the active position. In the active position, the first coupling means 10 is placed such that the seat belt tongue can be inserted. According to the embodiment shown in fig. 1, the fixation of the first coupling means 10 in the first slot 80 is achieved by hinging the coupling element 10 into the first slot 80. The securing system 30 further includes a second slot 85, the second slot 85 for receiving and securing the second coupling device 20. The second coupling device 20 comprises a second engagement element 201 and a second positioning element 202. Details of the second coupling device 20 are described below with reference to fig. 2 b. The second coupling device 20 shown in fig. 1 is stored in the storage system 110. The storage system 110 may be formed as a pocket, recess, or cavity in the securing system 30. When the second coupling device 20 is stored in the storage system 110, the second coupling device 20 is in an inactive position because in this configuration, the second coupling device 20 is unlikely to engage the seat belt of the vehicle. The second coupling device 20 is attached to the second socket plate 75. The second socket plate 75 ensures that the second coupling device 20 can be securely fixed in the second slot 85 of the fixture. The second coupling means 20 is active when the second coupling means 20 is placed in the fixture. This means that the second coupling means can engage with the safety belt of the vehicle.

A storage system 110 is provided for storing the first coupling device 10 or the second coupling device 20 or both. The securing system 30 also includes a cover adapted to cover the storage system.

In order to secure a small child by means of the harness of the child safety seat 100, the first coupling means 10, which in the embodiment shown in fig. 1 is a safety belt buckle, is secured in the first slot 80 of the securing means by means of the receptacle plate 70. When the first coupling means 10 is secured in the first slot 80, the first coupling means 10 is positioned closer to the backrest 60 of the child safety seat 100 than when it is secured in the second slot 85. This arrangement is particularly suitable for small children. The small child is secured in the child safety seat 100 by an integral harness. The tongue of the integrated safety-belt can be inserted into the first coupling means 10. Since a small child occupies only a small portion of the seating area of the seat portion 50 of the child safety seat, it makes sense to place the first coupling means 10 closer to the backrest 60 and thus closer to the child.

The second coupling device 20 is shown in its inactive position in fig. 1. The configuration shown in fig. 1 corresponds to a child safety seat for small children. However, once a child grows up, the child safety seat must be converted for use with the safety belt of the vehicle. The conversion will be described in detail below with reference to fig. 3a-3 d. The second coupling device 20, shown in fig. 1 as a seat belt clip, may be secured in the second slot 85 instead of the first slot 80, thereby providing more space and flexibility depending on the size and age of the older child who may use the seat belt of the vehicle seat.

Fig. 2a shows the first coupling device 10 of fig. 1. According to this embodiment, the coupling device 10 comprises a first engaging element 101 and a first positioning element 102. Further, a socket board 70 is shown. The first coupling device 10 is attached to the socket board 70. In fig. 2a the positioning element 102 is shown attached to the socket plate 70. The first engaging element 101 is a belt buckle of a safety belt system. The first positioning element 102 shown is a strip. The positioning element 102 ensures that the first engaging element 101 is placed in a position to receive the tongue of the safety belt. This further ensures that the first engaging element 101 does not have too much clearance, so that the safety belt is tightened securely. As an alternative or in addition to the strap, the positioning element 102 may comprise a flexible or rigid element adapted to position the engaging element 101 at a distance from the seat portion 50 of the child safety seat 100. This makes the first coupling device 10 more durable. Preferably, the coupling device 10 is adjustable according to the different sizes and ages of the children. Advantageously, the length of the positioning element 102 is adjustable. The positioning element 102 thus acts as an adjustment means. For example, the length of the strap may be adjustable.

Fig. 2b shows the second coupling device 20 of fig. 1. The second coupling device 20 comprises a second engagement element 201 and a second positioning element 202. Further, the second coupling device 20 is shown attached to the second socket board 75. The second coupling device 20 is a safety belt clip. The engaging element 201 is adapted to receive the lap portion of the vehicle seat belt. The illustrated engagement element 201 is formed as a hook. The positioning element 202 is configured to position the engaging element 201 at a distance from the seat portion 50 of the child safety seat. The positioning element 202 ensures that the second engaging element 201 is placed in a suitable position for receiving the lap portion of the vehicle seat belt. The positioning element 202 may comprise a strap, a flexible and/or a rigid element. The use of flexible and/or rigid elements adapted to position the engaging element 201 at a distance from the seat portion 50 has several advantages. A first advantage is that the safety belt of the vehicle is properly guided through the pelvic region of the passenger when engaging with the engaging element 201 of the coupling device 20. Secondly, the insertion of the safety belt into the coupling device 20 is advantageous in that it can be done with only one hand. Preferably, the coupling device 20 is adjustable according to the different sizes and ages of the children.

Advantageously, the length of the positioning element 202 is adjustable. For example, the length of the strap and/or the length of the flexible or rigid element may be adjustable. Preferably, the length of the positioning element 202 of the second coupling device 20 is greater than the length of the positioning element 102 of the first coupling device 10. This is because the first coupling device 10 is typically used for small children, while the second coupling device 20 is typically used for older children. Thus, the positioning element 202 acts as an adjustment means.

Fig. 2c shows a first embodiment of a fixation system 30 according to the invention. The storage system 110, the first coupling device 10, the second coupling device 20, and the lid 115 of the storage system 110 are shown. The first coupling means 10 shown in fig. 2c is a seat belt buckle as described in relation to fig. 2 a. The second coupling device 20 shown in fig. 2c is a safety belt clip as described in relation to fig. 2 b. The cover 115 serves as a fixing means of the first coupling device 10 and the second coupling device 20. The first coupling device 10 is secured in the first slot 80 of the fixture/cap 115. The second coupling device 20 is secured in the second slot 85 of the fixture/cover 115. The first coupling device 10 and the second coupling device 20 are fixed in the respective grooves 80 and 85 by means of respective socket plates (only the socket plate 75 of the second coupling device 20 is shown in fig. 2 c). According to this embodiment, the first coupling device 10 and the second coupling device 20 are tightly fixed to the fixture/cover 115. In other words, the fixture/cap 115 couples the first coupling device 10 and the second coupling device 20 such that movement of the cap 115 causes movement of both coupling devices. The cap 115 serves as a coupling mechanism. The first coupling means 10 extends from the cover 115 in one direction and the second coupling means 20 extends from the cover 115 in the opposite direction. The storage system 110 is sized such that it can accommodate either of the first coupling device 10 and the second coupling device 20.

Fig. 2d shows the fixation system 30 according to the first embodiment, wherein the first coupling means 10 is in the active position. When the first coupling means 10 is placed in this configuration, the first coupling means 10 is ready to receive the seat belt tongue of the child safety seat. Thus, the first coupling means 10 is in the active position. The second coupling means (not visible in fig. 2 d) is stored in the storage system. The second coupling means is thus in the inactive position. In fig. 2d, only the socket plate 75 is visible, the socket plate 75 securing the second coupling means into the second slot 85 of the fixture/cover 115. The storage system is covered by a lid 115. The lid 115 in the closed position is locked. Thus, the first coupling means 10 are also locked firmly in the active position.

Fig. 2e shows the fixation system 30 according to the first embodiment, wherein the second coupling means 20 is in the active position. When the second coupling device 20 is placed in this configuration, the second coupling device 20 is ready to receive the lap portion of the seat belt of the vehicle. Thus, the second coupling means 20 is in the active position. The first coupling means (not visible in fig. 2 e) are stored in the storage system. The first coupling means is thus in the inactive position. In fig. 2e, only the socket plate 70 is visible, the socket plate 70 securing the first coupling means in the first slot 80 of the fixture/cover 115. The storage system is covered by a lid 115. The lid 115 in the closed position is locked. Thus, the second coupling means 20 are also locked firmly in the active position.

The transfer of the first coupling means 10 from its active position (as shown in fig. 2 d) to its inactive position, while the transfer of the second coupling means 20 from its inactive position to its active position (as shown in fig. 2 e) can be done as follows. First, the lid 115 is removed from the storage system 110. This may be accomplished by lifting the cap 115 and/or sliding it back. As described above, the first coupling device 10 and the second coupling device 20 are tightly fixed to the cover 115. Once the cap 115 is removed, the cap 115 may be rotated. When the cover 115 is turned, the first coupling means 10 and the second coupling means 20 exchange their directions and positions. That is, the first coupling device 10 and the second coupling device 20 automatically exchange directions and positions by simply rotating the cover 115. Thereafter, the lid 115 is closed, for example by sliding the lid 115 along the upper portion of the storage system 110 until it is locked. The first coupling device 10 is then stored in the storage system 110. Thus, the first coupling device 10 is in the inactive position. The second coupling means 20 is placed in an active position. Since the first coupling device 10 and the second coupling device 20 are coupled to each other by the cap 115, one coupling device is always in the active position and the other coupling device is in the inactive position. Placing one coupling device in the active position automatically places the other coupling device in the inactive position.

Figures 3a-3d show different configurations of a fixation system 30 of a second embodiment of the present invention. First in fig. 3a, the coupling device 10 is fixed in the first groove 80 of the fixing device. In this case the second groove 85 is not used. The coupling device 10 comprises a safety buckle. The coupling device 10 is hinged in the groove. When the first coupling means 10 is placed in this configuration, the first coupling means 10 is ready to receive the seat belt tongue of the child safety seat. Thus, the first coupling means 10 is in the active position. The second coupling means 20 (not visible in fig. 3 a) is stored in the storage system 110. Thus, the second coupling device 20 is in the inactive position. The storage system 110 is covered by a lid 115. The lid 115 in the closed position serves as a lock of the first coupling means 10 in the active position. That is, the closed lid 115 locks the first and second slots 80,85 such that the first coupling means 10 is blocked in the first slot 80. In particular, lateral movement of the coupling device 10, i.e. out of the first slot 80, is not possible. Fig. 3b shows the fastening system 30 with the lid 115 opened. In this configuration, the second coupling device 20 stored in the storage system 110 is visible. Furthermore, the first and second grooves 80,85 are no longer blocked by the cap 115. That is, the first coupling device 10 may be shifted out of its active position along the first slot 80 of the fixation device. This allows the first coupling device 10 to be removed from the first slot 80. Fig. 3c shows the securing system 30 in a configuration after switching the active and inactive positions of the first coupling means 10 and the second coupling means 20. The first coupling device 10 is stored in the storage system 110. Thus, the first coupling device 10 is in the inactive position. The second coupling means 20 is hinged into the second slot 85. The second coupling means is thus in the active position. The coupling device 20 shown in fig. 3c is a safety belt clip. Fig. 3d shows the fixation system 30 with the second coupling means 20 in the active position. The lid 115 of the storage system 110 is closed. Thus, the first coupling device 10 stored in the storage system 110 is not visible. The closed cover 115 serves as a lock of the second coupling means 20 inserted into the second groove 85. That is, the closed cap 115 prevents the second coupling device 20 from being removed or loosened from the second slot 85.

Figures 3a-3d show a series of steps that may be performed when converting a child safety seat for use with an integrated harness to a child safety seat for use with a harness of a vehicle. The securing system 30 may be installed in the seat portion of the child safety seat. To convert the child safety seat, the user first opens the closed lid 115 (in the sequence from fig. 3a to fig. 3 b). The active first coupling means 10 can then be disengaged from the first groove 80. This may be accomplished by sliding the first coupling device 10 out of the first slot 80 from the stop of the fixture. In addition, the inactive second coupling device 20 is removed from the storage system 110. The first coupling device 10 is then placed into the storage system 110 so that it becomes inactive. Thus, the first coupling device 10 has been transferred from the active position to the inactive position along the first slot 80 of the fixation device. The second coupling means 20 is hinged into the second slot 85 (as shown in fig. 3 b). This can be achieved by inserting the second coupling means 20 into the second groove 85 and transferring it along the second groove 85 of the fixing means to its stop. Finally, the lid 115 is closed. This blocks the second coupling means 20 in the second groove 85. Lateral movement of the second coupling means 20 is inhibited. The second coupling means 20 is now in the active position. It is secured in the securing system 30. The conversion of a child safety seat for use with a vehicle safety belt into a child safety seat for use with an integrated safety belt may be accomplished by performing the above steps in reverse order, i.e. the first and second coupling means are interchanged. Thus, the first coupling device 10 and the second coupling device 20 are each shiftable along the fixing device 80,85 between a respective active position and a respective inactive position.

Also shown in fig. 3a-3d are fastening means, such as grooves 80,85 arranged at a distance from each other. The arrangement of the slots 80,85 is such that when the fixing system 30 is installed in the seat portion of the child safety seat, the effective first coupling means is located closer to the back of the child safety seat than the effective second coupling means. This arrangement of the slots 80,85 allows for different sizes and ages of children. While the arrangement with the first coupling means 10 being effective is for small children, the arrangement with the second coupling means 20 is for older children. The placement of the second coupling means 20 further away from the backrest of the child safety seat than the first coupling means 10 allows an older child sufficient space on the seat portion of the child safety seat.

Fig. 4a and 4b show a third embodiment of a fixation system 30 according to the invention. The fastening system 30 shown in fig. 4a and 4b differs from the fastening system of the second embodiment shown in fig. 1 and 3a-3d in that the fastening means 80,85 comprise a rail system with grooves acting as rails. The first coupling device 10 is fixed in the first rail 80. The second coupling means 20 is fixed in the second rail 85. The movement of the first coupling device 10 and the second coupling device 20 is limited to the respective rails 80 and 85. The first coupling device 10 and the second coupling device 20 are secured to the respective rails 80 and 85 by means of the respective socket boards 70 and 75. To bring either of the coupling devices 10,20 into the active position, the respective coupling device 10 or 20 is moved from the storage system 110 along the slot/track 80 or 85 until it reaches a position outside the storage system 110. To this end, the storage system includes a ramp-shaped exit portion 116. The coupling device 10 or 20 is then in the active position. The other coupling device 10 or 20 is brought into the inactive position as follows. It moves along the slot/track 80 or 85 into the storage system 110. The storage system 110 is shown in the form of a well. The coupling of the coupling device 10 or 20 to the channel/rail 80 or 85 is such that it can be rotated, tilted or bent 90 degrees about an axis parallel to the rail 80 or 85. That is, the securing system 30 is configured such that any of the coupling devices can be rotated from an upright position to a horizontal position. This allows loading of the coupling device 10 or 20 in the storage system 110. The first coupling device 10 and the second coupling device 20 of the third embodiment may not be disconnected from the fixing system 30. For this reason, the risk of loss of any one coupling device is greatly reduced. The lid 115 may be closed. It serves as a lock for the coupling device 10 or 20 in its active position, as described above in relation to fig. 3a-3 d. The arrangement of the slots/tracks 80 and 85 may be the same as described above in relation to fig. 3a-3d, i.e. they may be separated by a certain distance taking into account different sizes and ages of children.

In the embodiment shown in fig. 4a and 4b and as described above, the first coupling device 10 and the second coupling device 20 are secured to the respective rails 80 and 85 by means of the respective socket boards 70 and 75. However, movement of the receptacle boards 70,75 may also be limited to a horizontal plane in accordance with the present invention. If the movement of the receptacle boards 70,75 is limited to a horizontal plane, the receptacle boards 70,75 themselves need not be guided over the ramped outlet portion 116 of the storage system 110. This has the following advantages: the return of either of the coupling devices 10,20 to the active position or to the inactive position is smoother. The mechanism for limiting movement of the receptacle boards 70,75 to the horizontal plane may be part of the rail systems 80, 85.

Fig. 5a and 5b show a fourth embodiment of the fixation system 30 of the present invention. The embodiment shown in fig. 5a and 5b differs from the third embodiment described in relation to fig. 4a and 4b in that the fixation system 30 further comprises a coupling mechanism 34. The coupling mechanism comprises a belt 35 and a counter wheel 36. The belt 35 is wound around a wheel 36. One end of the belt 35 is connected to the first coupling means 10. A second end of the belt 35 is connected to the second coupling means 20. The connection of the first coupling means 10 and the second coupling means 20 enables an immediate movement of both coupling means. Movement of one coupling device 10,20 along the respective slot/track 80,85 causes the other coupling device 10,20 to move in the opposite direction along the respective slot/track 80, 85. Fig. 5a shows the first coupling device 10 in the active position. In fig. 5b it is shown that the movement of the second coupling means 20 out of the storage system along the slot/track 85 has caused the first coupling means 10 to move into the storage system. This prevents the coupling devices 10,20 from being in the active position at the same time or in the inactive position at the same time. A push or lever mechanism may be used instead of a belt link. When using such a coupling mechanism, it is particularly advantageous that the movement of the socket plates of the coupling devices 10,20 is limited to a horizontal plane, as previously described.

Figures 6a,6b and 6c show variations of the fixture/track system and storage system of the present invention. This variant differs from the embodiment described in relation to fig. 4a and 4b in that only one rail 80 is used. In addition, the storage system includes two pockets 117, 118. The first recess 117 is adapted to store the first coupling device 10 and the second recess 118 is adapted to store the second coupling device 20. Fig. 6a shows the first coupling means 10 in its active position (indicated by dashed lines). The second coupling device 20 is stored in the second pocket 118. Thus, the second coupling device 20 is in its inactive position. Fig. 6b shows the second coupling means 20 in its active position. The first coupling means 10 are present in the first pocket 117. Thus, the first coupling device 10 is in its inactive position. In fig. 6c, both coupling devices 10,20 are stored in respective pockets 117, 118. Thus, both coupling devices are in the inactive position. The transfer of the coupling devices 10,20 between the active position and the inactive position is accomplished similarly to what is described in relation to fig. 4a and 4 b. That is, when in the inactive position, the coupling means are guided out of the respective pocket along the track 80 until it reaches the active position (as shown in dashed lines in fig. 6a,6b,6 c). The use of two pockets 117,118 has the advantage that both coupling devices 10,20 can be stored simultaneously. Thus, when the child safety seat is used as a high back booster for an older child, the two linkages 10,20 can be safely stowed without the risk of losing one of them.

Fig. 6d and 6e show a variation of the track and storage system previously described with respect to fig. 6a,6b and 6c, namely, the use of one track 80 and two pockets 117,118, in addition to a coupling mechanism 34. The coupling mechanism 34 comprises a pulling element 35, such as a belt, a wire or a chain. In fig. 6d and 6e it is shown that the first coupling means 10 and the second coupling means 20 are coupled to each other by means of coupling mechanisms 34, 35. In particular, the first coupling means 10 is in its active position (indicated by the dashed line) in fig. 6 d. The second coupling device 20 is stored in the second pocket 118. Thus, the second coupling device 20 is in its inactive position. In fig. 6e, the positions of the first coupling means 10 and the second coupling means 20 are interchanged. For variants with one track 80, the use of a coupling mechanism 34 is particularly advantageous. Since the rail has no stop, which places the coupling device in the correct effective position, the coupling mechanism 34 helps the user to find the correct effective position. Further, the coupling mechanism 34 may be realized by a simple component such as a belt, a wire, or a chain. When converting a child safety seat for use with an integrated safety belt into a child safety seat for use with a vehicle safety belt, both the first and second coupling elements 10,20 move in the same direction. That is, in contrast to the coupling mechanism 34 described with respect to fig. 5a and 5b, no reversal of the belt, wire or chain is required. Further, movement of one coupling device causes movement of the other coupling device due to the coupling mechanism 34. Thus, the child safety seat is converted faster and easier.

Figures 7a,7b and 7c show another variation of the fixture/track system and storage system of the present invention. This variant differs from the variant described in relation to fig. 6a,6b and 6c in that the rail system comprises two rails 80 and 85. The first rail 80 is adapted to fix the first coupling device 10. The second rail 85 is adapted to secure the second coupling device 20. The variant of figures 7a,7b and 7c still comprises a storage system with two pockets 117, 118. Namely, the first pocket 17 is adapted to store the first coupling means 10; the second pocket 118 is adapted to store the second coupling device 20. Fig. 7a shows the first coupling device 10 in its active position (indicated by the dashed line). An effective position further indicated is that the first coupling means 10 is placed at the stop of the first rail 80. The second coupling device 20 is stored in the second pocket 118. Thus, the second coupling device 20 is in its inactive position. Fig. 7b shows the second coupling means 20 in its active position. The first coupling means 10 are stored in the first recess 117. Thus, the first coupling device 10 is in its inactive position. In fig. 7c, both coupling devices 10,20 are stored in respective pockets 117, 118. Thus, both coupling devices are in the inactive position. The transfer of the coupling devices 10,20 between the active position and the inactive position is accomplished similarly to what is described in relation to fig. 4a and 4 b. That is, when in the inactive position, the coupling device 10,20 is guided out of the respective pocket 117,118 along the respective track 80,85 until it reaches the respective stop. It then reaches the corresponding active position (shown in dashed lines in fig. 7a,7b,7 c). In addition to the advantages mentioned with respect to the variants of fig. 6a,6b and 6c, the use of two rails has the following advantages: the effective position is clearly indicated to the user by the stop of the rail. That is, once the coupling means are pushed against the stop of the respective track, the correct effective position is reached. Furthermore, the effective position is more stable, since the movement of the coupling means is more restricted. Finally, the arrangement of the rails 80 and 85 may be the same as described above in relation to fig. 3a-3d and fig. 4a and 4b, i.e. they may be separated by a certain distance, taking into account the different sizes and ages of the children.

Figures 7d and 7e show a variation of the track and storage system previously described in relation to figures 7a,7b and 7c, namely the use of two tracks 80,85 and two pockets 117,118, in addition to the coupling mechanism 34. As in the variant of fig. 6d and 6e, the coupling mechanism 34 comprises a pulling element 35, such as a belt, a wire or a chain. In fig. 7d and 7e it is shown that the first coupling means 10 and the second coupling means 20 are coupled to each other by means of coupling mechanisms 34, 35. In fig. 7d, the first coupling means 10 is in its active position (indicated by the dashed line). The second coupling device 20 is stored in the second pocket 118. Thus, the second coupling device 20 is in its inactive position. In fig. 7e, the positions of the first coupling means 10 and the second coupling means 20 are interchanged. The advantages of the coupling mechanism of the variant of fig. 7d and 7e are the same as those described above in relation to the variant of fig. 6d and 6 e.

Figures 8a and 8b show another variation of the fixture/track system and storage system of the present invention. In this variant, the rail system comprises a Y-shaped rail. In other words, the rail system comprises a wishbone connection. At the connection, the single common rail is split into a first rail 80 and a second rail 85. A single common rail is adapted to accommodate the first coupling means 10 and the second coupling means 20. Advantageously, the first track 80 is adapted to receive and fix the first coupling means 10; the second rail 85 is adapted to receive and secure the second coupling device 20. The storage system 110 according to this variation includes one pocket. The storage system 110 may be adapted to store either the first coupling device 10 or the second coupling device 20. Fig. 8a shows the first coupling means 10 in its active position (indicated by dashed lines). The active position is further indicated by the first coupling means 10 being placed at a stop of the first rail 80. The second coupling device 20 is stored in the storage system 110. Thus, the second coupling device 20 is in its inactive position. Fig. 8b shows the second coupling means 20 in its active position. The first coupling device 10 is stored in the storage system 110. Thus, the first coupling device 10 is in its inactive position. The transfer of the coupling device 10,20 between the active position and the inactive position is done as follows. The coupling devices stored in the storage system 110 are guided out of the storage system 110 along a rail system. At the fork connection, the coupling device 10,20 is guided into the respective rail 80,85 until it reaches the stop of the respective rail 80, 85. If the rails 80,85 are configured such that the first coupling means 10 can be accommodated only by the first rail 80 and the second coupling means 20 can be accommodated only by the second rail 85, the risk of a misalignment of the coupling means is reduced. Furthermore, according to this variant, since only one single common rail leads into the storage system 110, it is possible to give a storage position only for the first coupling device 10 or the second coupling device 20. In this case, the user is forced to use at least one coupling device. This has the advantage that the user is reminded to use one of the coupling devices. Further advantages of this variant are the same as those of the variant employing two separate tracks described above with respect to fig. 4a and 4b and fig. 7a,7b and 7 c. Finally, the arrangement of the rails 80 and 85 may be the same as described above in relation to fig. 3a-3d and fig. 4a and 4b, i.e. they may be separated by a certain distance, taking into account the different sizes and ages of the children.

Fig. 8c and 8d show a variation of the rails and storage system previously described with respect to fig. 8a and 8b, namely, employing a Y-shaped rail having a first rail 80 and a second rail 85 and a pocket, in addition to the coupling mechanism 34. The coupling mechanism 34 corresponds to the coupling mechanism described in fig. 5a and 5 b. That is, the coupling mechanism 34 includes a belt 35 and a diverting pulley 36. As shown in fig. 8c and 8d, one end of the belt 35 is coupled to the first coupling means 10, and the other end of the belt 35 is coupled to the second coupling means 20. Thereby, the first coupling device 10 and the second coupling device 20 are coupled to each other. The diverter wheel 36 ensures that movement of one coupling device in one direction causes movement of the other coupling device in the other direction. This reverse movement is necessary because a separate pocket is used. In fig. 8c, the first coupling means 10 is in its active position (indicated by the dashed line). The second coupling device 20 is stored in a pocket of the storage system 110. Thus, the second coupling device 20 is in its inactive position. In fig. 8d, the positions of the first coupling means 10 and the second coupling means 20 are interchanged. The advantages of the coupling mechanism of the variant of fig. 8c and 8d are the same as those described above with respect to fig. 5a and 5 b.

Figures 9a,9b and 9c show another variation of the fixture/track system and storage system of the present invention. In this variant, the rail system comprises a Y-shaped rail. With respect to the variant shown in fig. 8a and 8b, the Y-shaped tracks are reversed. That is, there is a single common rail adapted to secure the first coupling device 10 and the second coupling device 20 in an active position. However, there are two rails, each for receiving the first coupling device 10 or the second coupling device 20, respectively, in the storage system 110. Preferably, the first track is adapted to house the first coupling means 10; the second track is adapted to receive the second coupling means 20. Storage system 110 according to this variation includes a first pocket 117 and a second pocket 118. The first recess 117 is adapted to store the first coupling means 10; the second pocket 118 is adapted to store the second coupling device 20. Instead of two pockets, the storage system 110 may comprise a single pocket adapted to store both the first coupling device 10 and the second coupling device 20. Fig. 9a shows the first coupling device 10 in its active position (indicated by dashed lines). The active position is further indicated by the first coupling device 10 being placed at a stop of a single common rail. The second coupling device 20 is stored in the second pocket 118 of the storage system 110. Thus, the second coupling device 20 is in its inactive position. Fig. 9b shows the second coupling means 20 in its active position. The second coupling means 20 are placed at the stop of the single common rail. The first coupling device 10 is stored in the first recess 117 of the storage system 110. Thus, the first coupling device 10 is in its inactive position. In fig. 9c, both coupling devices 10,20 are stored in respective pockets 117, 118. Thus, both coupling devices 10,20 are in their respective inactive positions.

The transfer of the coupling device 10,20 between the active position and the inactive position is done as follows. It is assumed that the first coupling means 10 is in its active position and the second coupling means 20 is in its inactive position, as shown in fig. 9 a. The first coupling device 10 is first moved along the single common rail of the Y-shaped rail until it reaches the fork connection. At the fork connection, the first coupling means 10 are further guided along a track leading to the first recess 117. Preferably, the first coupling device 10 may be accommodated by only the first rail, and the second coupling device 20 may be accommodated by only the second rail of the Y-shaped rail. This facilitates storing the coupling means in the respective pockets. The second coupling means 20 stored in the second pocket 118 exit the second pocket 118 along a corresponding track of the track system. At the fork connection, the second coupling device 20 is guided into the single common rail until it reaches a stop. This configuration is shown in fig. 9 b. It is similarly possible to handle a situation in which the second coupling means is in its active position and the first coupling means is in its inactive position. Since the storage system comprises two recesses 117,118, both coupling devices 10,20 can be stored simultaneously, as shown in fig. 9 c. The advantages of providing two pockets are the same as described above in relation to the variants of fig. 6a,6b,6c and fig. 7a,7b,7 c.

Fig. 6-9 show variations of the securing system/rail system and storage system, which relate specifically to the number and arrangement of rails and the number and arrangement of pockets. It should therefore be understood that any of the variants in fig. 6-9 can be used in any of the embodiments described in relation to fig. 3,4 and 5, and that all the features and details already described in relation to fig. 3,4 and 5 but not further described in relation to fig. 6-9 are fully compatible with and can also be used with the variants of fig. 6-9.

The previously described embodiments and variations may be mounted or integrated in the seat portion of a child safety seat.

An embodiment according to the second aspect of the invention is described in connection with fig. 10a and 10 b. Fig. 10a shows two conventional buckle tongues 12 adapted to engage with coupling means of a seat belt system of a child safety seat. The coupling means is preferably a safety buckle. The buckle tongue 12 is connected to the double belt 15 of the safety belt. The coupling means are not shown in fig. 10 a. When the tongue 12 is engaged with the coupling means, the harness is securely fixed. To this end, the coupling means may comprise a groove for receiving tongue 12. To release the tongue 12 from the coupling means, the coupling means may comprise a release button. Upon activation, e.g. pressing a release button, the tongue 12 may be removed from the coupling device.

Fig. 10b shows an insertion tongue 21 according to the invention. The insertion tongue 21 comprises a coupling element 23 and an engaging element 22. The coupling element 23 is fitted into a groove of a coupling device, such as a buckle. The coupling element 23 may be formed as a latch. The coupling element 23 of the insertion tongue 21 is configured such that the locking and/or release of the insertion tongue 21 in the coupling device can be accomplished in the same way as the tongue 12. The engaging element 22 is adapted to receive the lap portion of the vehicle seat belt. As shown in fig. 10b, the engagement element 22 may be formed as a hook. The insertion tongue 21 of the invention is adapted to be inserted into the coupling means of a child safety seat. In order to convert the child safety seat for use with a safety belt system into a child safety seat for use with a safety belt of a vehicle, the coupling element 23 is inserted into a slot of the coupling device. The insert tongue 21 inserted into the coupling means serves as a safety belt clip. The coupling device does not need to be removed. The conversion is very quick and simple. To remove the insertion tongue 21 from the coupling device, the release button of the coupling device is pressed. When the coupling device is used with an integrated seat belt system, the insertion tongue 21 may be attached close to the coupling device. The insertion tongue 21 may be attached to the child safety seat. The insertion tongue 21 may be attached by a wire or flexible element, and/or it may be stored in a storage box contained by the child safety seat. This avoids the insertion tongue 21 being lost.

Fig. 11a and 11b show an embodiment according to a third aspect of the present invention. Fig. 11a shows a compound coupling device 16. The combined coupling device 16 comprises a coupling device 11 and a fixing element 14. The tongue 12 of the safety belt system and the double belt 15 of the safety belt are also shown. The securing element 14 is adapted to connect the combi-link 16 to the seat part of the child safety seat. The fixing element 14 may comprise a socket plate. The fixing element 14 may also be a strap attached to the seat part only. The coupling device 11 comprises an engaging element 111 and a positioning element 112. The engaging element 111 shown in fig. 11a is a safety buckle comprising a hook 113. The buckle also includes a slot. The tongue 12 of the belt system can be inserted into a groove of the belt buckle. The hook 113 is configured to receive and engage with an overlapping portion of the vehicle seat. The hook 113 forms part of a safety belt clip of the combination coupling device 16. In fig. 11a, the combi-link 16 is used with an integrated seat belt system for a child safety seat. The positioning element 112 ensures that the engaging element 111 is placed in the proper position for receiving the tongue 12 of the safety belt. The positioning element 112 may comprise a strap and/or a flexible or rigid element adapted to position the engagement element 111 at a distance from the seat portion of the child safety seat 100. Advantageously, the length of the positioning element 112 is adjustable. For example, the length of the strap and/or the length of the flexible or rigid element may be adjustable.

In fig. 11b, the combined coupling device 16 already described with reference to fig. 11a is shown with the safety belt 25 engaged in the hook 113 of the engaging element 111. The tongue 12 of the safety belt is not used in this configuration. In this configuration, the combi-coupling device 16 acts as a safety belt clip. Preferably, the seat belt clip is integrated into a release button of the seat belt buckle. Preferably, when used as a belt clip, the slot of the belt buckle may be covered by a cover (not shown). This may protect the open slot from contamination.

By using the modular linkage 16 according to the present invention, the useful life of the child safety seat 100 may be extended as the child grows without the need to store any replacement parts that may be lost over time. The functions of the seat belt buckle and the seat belt clip are integrated into the combined coupling device 16. Thus, when converting the child safety seat from a configuration using an integrated harness to a configuration using a vehicle harness, the combi-link 16 does not need to be removed or replaced. When converted to a seat belt configuration for use with a vehicle, the seat belt and the buckle tongue need only be stored in the respective storage boxes.

The child safety seat including the compound linkage 16 may be configured such that the compound linkage 16 may be adjusted by linear motion or rotation. This allows the adjustable positioning of the coupling device 16 to be adapted to the size and age of the occupant of the child safety seat.

List of reference numerals

10 first coupling device

11 safety belt buckle

12 second coupling device

14 fixing element

15 safety seat belt for children

16 combination connecting device

20 second coupling device

21 insertion tongue

22 into the engaging elements of the tongue 21

23 into the coupling element of the tongue 21

25 safety belt for vehicle

30 fixation system

34 coupling mechanism

35 belt of coupling mechanism 34

36 change-over wheel of coupling mechanism 34

50 seat part

60 backrest

70 first socket board

75 second socket board

80 fixture/track system/first trough/first track

85 fixture/track system/second trough/second track

100 child safety seat

101 first engaging element

102 adjustment device/first positioning element

110 storage system

111 engaging element of a combination coupling device 16

112 positioning element of combined coupling device 16

113 hook of combined connecting device 16

115 storage system 110 cover

116 store the ramped outlet portion of the system 110

117 first pocket for storage of system 110

118 store the second cavity of the system 110

201 second engagement element

202 adjusting device/second positioning element