Restraint belt arrangement and safety seat

Abstract

A restraint strap assembly for connecting the base of a safety seat to a vehicle, comprising a first connecting bar, a second connecting bar, and a restraint strap. The first connecting bar is located at least partially above a top surface of the base, and the second connecting bar is located within the base. The restraint strap is connected to the second connecting bar and to a portion of the first connecting bar located above the top surface of the base, and is detachably connected to the vehicle.

Description

TECHNICAL AREA The present disclosure relates to the technical field of safety seats and in particular to a restraint belt arrangement and a safety seat comprising this restraint belt arrangement. BACKGROUND A child safety seat is a seat that is attached to a vehicle seat and serves as a seat. Typically, child safety seats are specifically designed for children and serve to restrain and protect them, thus increasing their safety while traveling in a vehicle. To ensure a more secure attachment of the safety seat to the vehicle seat, the safety seat has an additional upper tether strap. One end of this strap is attached to the safety seat and the other end to the vehicle, creating an additional anchor point and increasing the stability of the attachment. However, the existing upper tether strap is either connected to the safety seat at a low point or exits the safety seat at a low point, which can lead to an unstable connection between the safety seat and the vehicle and pose a risk of tipping over. SUMMARY The present disclosure aims to provide a restraint belt assembly and a safety seat comprising this restraint belt assembly. The connection height of the restraint belt assembly is increased to stabilize the connection of the safety seat, thereby making it less prone to tipping and safer in use. According to one aspect of the present disclosure, a restraint strap arrangement is provided to connect a base or seat body of a safety seat to a vehicle, the restraint strap arrangement comprising a first connecting rod, a second connecting rod, and a restraint strap. The first connecting rod is arranged at least partially above a top surface of the base, and the second connecting rod is arranged within the base. Alternatively, the first connecting rod is arranged at least partially above a top surface of the seat body, and the second connecting rod is arranged within the seat body. The restraint strap is connected to the second connecting rod and to a portion of the first connecting rod that is located above the top surface of the base or above the top surface of the seat body, and is detachably connected to the vehicle. According to some embodiments of the present disclosure, the retaining strap comprises a connecting strap which is connected to the first connecting rod and the second connecting rod; the connecting strap forms a first loop and a second loop by being wrapped around the first connecting rod and the second connecting rod respectively at the connection points; the first connecting rod passes through the first loop and the second connecting rod passes through the second loop. According to some embodiments of the present disclosure, the first connecting rod is connected to the second connecting rod. According to some embodiments of the present disclosure, the restraint strap arrangement further comprises a positioning rod which, together with the second connecting rod, is arranged within the base or seat body. The first connecting rod and the positioning rod are connected to each other in a first direction, and the second connecting rod is connected to the first connecting rod and the positioning rod in a second direction which intersects the first direction. According to some embodiments of the present disclosure, the base or seat body is provided with an exit opening so that the retaining strap can extend between the first loop, which is located above the top of the base or above the top of the seat body, and the second loop, which is located inside the base or seat body. According to some embodiments of the present disclosure, the restraint strap arrangement further comprises a guide rod which, together with the second connecting rod, is arranged in the base or in the seat body. The guide rod is in contact with a portion of the connecting strap located between the first and the second loop in order to guide the direction of travel of the connecting strap between the first and the second loop. According to some embodiments of the present disclosure, the guide rod is arranged at a front face of the outlet opening in order to guide the retaining strap so that it extends from the front face of the guide rod rearward to the outlet opening. According to some embodiments of the present disclosure, the guide rod is connected to the first connecting rod. According to some embodiments of the present disclosure, the restraint strap arrangement further comprises a positioning rod which, together with the guide rod, is arranged inside the base or seat body. The first connecting rod and the positioning rod are connected to each other in a first direction, and the guide rod is connected to the first connecting rod and the positioning rod, which are connected to each other, in a second direction that intersects the first direction. According to some embodiments of the present disclosure, the restraint strap further comprises an adjusting device and an adjusting strap, wherein the adjusting strap is connected to the connecting strap via the adjusting device and is detachably connected to the vehicle, and wherein the adjusting device is configured to lock or unlock a length of the adjusting strap between the adjusting device and the vehicle. A portion of the connecting strap located between the first and the second loop forms a third loop by wrapping around it, and this third loop is pulled over the adjusting device. According to some embodiments of the present disclosure, a winding space is formed between the top of the base or seat body and a part of the first connecting rod located above the top of the base or seat body, and the part of the connecting strap located between the first and second loops passes through the winding space and forms the third loop by winding. According to some embodiments of the present disclosure, the connecting strap is provided with a connecting part, and the connecting strap is closed by the connecting part to form the first loop and the third loop; the first loop and the third loop are located on two opposite sides of the connecting part, and the winding direction of the connecting strap at the first loop is opposite to the winding direction of the connecting strap at the third loop. According to a further aspect of the present disclosure, a safety seat comprises a base, a seat body, and the restraint belt assembly according to one of the embodiments mentioned above. The seat body is rotatably connected to the base and has a forward-facing and a rearward-facing use state relative to the base, the restraint belt assembly being arranged to be positioned between the base and the vehicle. According to some embodiments of the present disclosure, the base is provided with a first limiting hook and the seat body with a second limiting hook; the first limiting hook engages in the second limiting hook when the seat body is in the forward-facing use state relative to the base; the first limiting hook disengages from the second limiting hook when the seat body is in the rearward-facing use state relative to the base. According to a further aspect of the present disclosure, a method for mounting the restraint strap arrangement according to one of the aforementioned embodiments on the base or seat body comprises: forming a first loop and a second loop by winding up a connecting strap of the restraint strap; guiding the first connecting rod through the first loop and attaching the first connecting rod to a rear cover of the base or seat body; and guiding the second loop of the connecting strap from a rear of the rear cover through an exit opening of the rear cover to a front of the rear cover. According to some embodiments of the present disclosure, the method further comprises: inserting the first connecting rod along a first direction into a positioning rod of the restraint strap assembly, wherein the positioning rod is attached to a base body of the base or to a main body of a backrest of the seat body; inserting the second connecting rod along a second direction intersecting the first direction into the first connecting rod and the positioning rod, which are connected by insertion, and guiding the second connecting rod through the second loop. According to some embodiments of the present disclosure, the method further comprises: attaching a fastening element to the second connecting rod, which is located on an outside of the first connecting rod and the positioning rod, which are connected to each other by insertion. According to some embodiments of the present disclosure, the method further comprises: attaching the rear cover to the base body or to the main body of the backrest. It is understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and do not limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are included here to provide a more comprehensive understanding of the disclosure, are integrated into this description, and form part of it. The accompanying drawings illustrate embodiments of the present disclosure and are used together with the following description to explain a concept of the present disclosure. Fig. 1 is a perspective view and a partially enlarged view of a safety seat according to embodiments of the present disclosure, wherein the seat body of the safety seat is in a forward-facing state of use. Fig. 2 shows a side view and a partially enlarged view of the safety seat according to embodiments of the present disclosure, wherein the seat body of the safety seat is in a forward-facing state of use.Figure 3 shows another perspective view of the safety seat according to embodiments of the present disclosure, wherein the seat body of the safety seat is in a rearward-facing position. Figure 4 shows a rear view of the safety seat shown in Figure 1 with a concealed restraint strap. Figure 5 shows a section along line AA in Figure 4 and a partially enlarged view of this section, which schematically illustrates how a connecting strap of the restraint strap runs. Figure 6 shows a rear perspective view and a partially enlarged view of the safety seat according to embodiments of the present disclosure, wherein a rear cover of a base and the restraint strap are concealed. Figure 7 shows a perspective view of part of a restraint strap assembly and part of the base according to embodiments of the present disclosure.Figure 8 shows a further perspective view of a part of the retaining strap assembly and a part of the base according to embodiments of the present disclosure. Figure 9 shows a perspective view of a first connecting rod of the retaining strap assembly and the rear cover of the base according to embodiments of the present disclosure. Figure 10 shows a front view of the first connecting rod and the rear cover shown in Figure 9. Figure 11 shows a section along line BB in Figure 10, which schematically illustrates how the connecting strap of the retaining strap runs. Figure 12 shows a partial exploded view and a partially enlarged view of a part of the retaining strap assembly and a base body of the base according to embodiments of the present disclosure, with the retaining strap obscured.Figure 13 shows a side view of part of the retaining strap assembly and the base body of the base according to embodiments of the present disclosure, with the retaining strap concealed. Figure 14 schematically shows a cross-sectional view along line CC in Figure 13. Reference symbol: 1 Safety seat 10 Restraint strap assembly 110 Restraint strap 111 Connecting strap 1111 First loop; 1112 Second loop; 1113 Third loop; 1114 Connecting part 112 Adjusting strap 1121 Adjusting end; 1122 Connecting end; 1123 Connector 113 Adjusting device 1131 Fixed end; 1132 Actuating end; 1133 Adjusting knob 120 First connecting rod; 121 First hole; 122 Second hole 130 Second connecting rod; 131 Mounting hole 140 Positioning rod; 141 First connecting hole; 142 Second connecting hole 150 Guide rod; 151 Mounting hole 160 Fastener 20 Base; 210 Base body; 220 Rear cover; 221 Exit opening; 230 First limiting hook; 240 Vertical part; 250 Horizontal part 30 Seat body; 310 Backrest; 320 Second limiting hook S Winding space DETAILED DESCRIPTION To further illustrate the principle and structure of the present disclosure, the preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings. It should be noted, however, that the described embodiments serve only as examples and the present disclosure must not be interpreted as being limited to the embodiments described herein. A safety seat according to the present disclosure can be used for various types of passengers, including, but not limited to, children, pregnant women, adults with special body shapes, or pets. A child safety seat is used below as an example to describe the safety seat in detail with reference to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 to 14 and in connection with specific embodiments.Furthermore, directional terms such as front, rear, left, right, up, and down are used based on the orientation of the safety seat during normal use (for example, during normal use, the seat body of the safety seat is in a forward-facing position, and a passenger sitting in the safety seat faces the front of a vehicle; in this case, the direction behind the passenger's back is defined as "rear," and "left," "right," "up," and "down" are determined accordingly). It is understood that the present disclosure is not limited to these orientations but can be adapted to the specific circumstances. Figures 1 and 3 show perspective views of a safety seat 1 according to the present disclosure from different angles. The safety seat 1 can comprise a restraint belt assembly 10 (as shown in Figure 5), a base 20, and a seat body 30. The base 20 is essentially L-shaped and comprises a vertical part 240 and a horizontal part 250. The seat body 30 is rotatably mounted on the base 20; for example, the seat body 30 can rotate 180° relative to the base 20. By rotating, the seat body 30 can be in a forward-facing state of use (as shown in Figures 1 and 2) or in a rearward-facing state of use (as shown in Figure 3).Specifically, this means: In the forward-facing position, a passenger sitting on the seat body 30 faces the front of the vehicle (in a child safety seat, this position is generally suitable for older children); in the rear-facing position, the passenger sitting on the seat body 30 faces the rear of the vehicle (in a child safety seat, this position is generally suitable for toddlers). As shown in Figures 1, 2 to 3, the restraint strap assembly 10 is attached to the base 20 and configured to connect the base to the vehicle and thereby connect the seat body 30 to the vehicle. Figures 1, 2 to 3 show only a restraint strap 110 and a first connecting rod 120 of the restraint strap assembly 10; the remaining parts of the restraint strap assembly 10 are shown in Figures 1, 2 to 3.3 are not shown because they are located inside base 20. Furthermore, as shown in Figures 2, 3, and 5, the vertical part 240 of the base 20 can be provided with a first limiting hook 230, and a backrest 310 of the seat body 30 can be provided with a second limiting hook 320. The first limiting hook 230 can be configured to engage with the second limiting hook 320. When the seat body 30 is in the forward-facing position, the first limiting hook 230 can engage with the second limiting hook 320, thereby connecting the seat body 30 more firmly to the base 20 and thus increasing the safety of the safety seat 1. When the seat body 30 rotates into the rearward-facing position, the first limiting hook 230 can disengage from the second limiting hook 320. Furthermore, the base 20 of the safety seat 1 can also be essentially straight and comprise only the horizontal part 250; in such a case, the seat body 30 can adjust its angle of inclination relative to the base 20, but cannot rotate into the aforementioned rearward-facing position. Alternatively, the safety seat 1 can function without the base 20, and the seat body 30 can only be positioned in the forward-facing position; such safety seats are generally designed for older children or children of larger stature. In both of the above cases, the restraint belt assembly 10 can be attached directly to the backrest 310 of the seat body 30 and designed to connect the seat body 30 directly to the vehicle. As described above, the restraint strap assembly 10 can be attached to the base 20 or to the seat body 30. The following description takes as an example the case where the restraint strap assembly 10 is arranged on the base 20. Fig. 5 shows the safety seat 1 according to the present disclosure in a sectional view and a partially enlarged view based on Fig. 4. Fig. 6 shows the assembly of the restraint strap assembly 10 inside the base 20 in a rear view and a partially enlarged view. As shown in Figs. 4, 5 to 6, the restraint strap assembly 10 is arranged on the base 20 (optionally on the vertical part 240) and comprises the restraint strap 110 (as shown in Fig. 3), the first connecting rod 120, and a second connecting rod 130. The restraint strap 110 is indirectly connected to the base 20 via the first connecting rod 120 and the second connecting rod 130, and the restraint strap 110 is detachably connected to the vehicle.Optionally, the first connecting rod 120 is arranged at least partially above a top surface of the base 20 (optionally of the vertical part 240); the second connecting rod 130 is arranged within the base 20 (optionally of the vertical part 240); and the first connecting rod 120 and the second connecting rod 130 are immovable relative to the base 20. The retaining strap 110 is connected to the first connecting rod 120, which projects from the top surface of the base 20, and is connected to the second connecting rod 130. That is, the retaining strap 110 can be indirectly connected to the base 20 at two different points, one of which is located above the top surface of the base 20. Optionally, the retaining strap 110 can have a connecting strap 111, the connecting strap 111 being connected to the first connecting rod 120, which projects from the top surface of the base 20, and to the second connecting rod 130.Due to the connection between the connecting strap 111 and the first connecting rod 120, which protrudes from the top of the base 20, the height of the connection point between the restraint strap 110 (optionally the connecting strap 111) and the base 20 is increased. This allows the restraint strap 110 (optionally the connecting strap 111) to be connected to the vehicle at a higher position, thus making the connection between the safety seat 1 and the vehicle more stable, reducing the risk of tipping, and increasing safety. Furthermore, since the restraint strap 110 (or the connecting strap 111) is connected to the first connecting rod 120 and the second connecting rod 130 at two different points along an top-bottom direction, the connection between the restraint strap 110 (or the connecting strap 111) and the base 20 is more stable and reliable. In an embodiment shown in Fig. 5, the connecting strap 111 can form a first loop 1111 and a second loop 1112 by wrapping it around the first connecting rod 120 and the second connecting rod 130 at the connection points. That is, the first connecting rod 120 passes through the first loop 1111, and the second connecting rod 130 passes through the second loop 1112. Optionally, the first loop 1111 and the second loop 1112 can be closed loops formed by sewing (e.g., by a stitching operation) the connecting strap 111. However, the present disclosure is not limited to this; other fastening means can also be used to form closed loops. Since the connecting strap 111 is placed over the first connecting rod 120 and the second connecting rod 130 in the form of closed loops, the adjustable relative offset between the connecting strap 111 and the first connecting rod 120 or the second connecting rod 130 is relatively small. Compared to simply wrapping the first connecting rod 120 or the second connecting rod 130 (where the adjustable relative offset between the connecting strap 111 and the first connecting rod 120 or the second connecting rod 130 is relatively large), the stability of the connection between the connecting strap 111 and the base 20 can be improved, the movement of the base 20 can be better restricted, and thus also the movement of the seat body 30, thereby reducing the risk of the entire safety seat 1 sliding forward if the vehicle brakes suddenly or collides. Figures 7 and 8 show a perspective view of the restraint strap assembly 10 and the base 20. As described above, the connecting strap 111 is guided through the first loop 1111 over the first connecting rod 120, so that the length of the portion of the connecting strap 111 that passes over the first connecting rod 120 remains unchanged. Furthermore, the connecting strap 111 is guided through the second loop 1112 over the second connecting rod 130, so that the length of the portion of the connecting strap 111 that passes over the second connecting rod 130 remains unchanged. There is almost no relative movement between the first connecting rod 120 and the first loop 1111, nor any relative movement between the second connecting rod 130 and the second loop 1112, when the restraint strap 111 is attached to the vehicle.Although there is a gap between the first connecting rod 120 and the first loop 1111, and a gap between the second connecting rod 130 and the second loop 1112, these gaps serve only to facilitate the insertion of the first connecting rod 120 through the first loop 1111 and the insertion of the second connecting rod 130 through the second loop 1112 during assembly. These gaps can be kept as small as possible. As shown in Figures 5 and 6, the retaining strap assembly 10 can further comprise a positioning rod 140, which can be arranged within the base 20 and rigidly connected to the base 20. Optionally, the first connecting rod 120 and the second connecting rod 130 can each be connected to the positioning rod 140 and are thus indirectly connected to the base 20. Optionally, the first connecting rod 120 is also connected to the second connecting rod 130. Optionally, the first connecting rod 120 can be rigidly connected to the positioning rod 140 via the second connecting rod 130 and thus indirectly connected to the base 20 via the positioning rod 140. Optionally, as shown in Figures 12 and 14, the number of positioning rods 140 can be two, with two positioning rods 140 each extending along the vertical part 240 of the L-shaped base 20.The first connecting rod 120 can be configured in the shape of an inverted U, with both ends inserted downwards in an up-down direction (also referred to as the first direction) into the ends of the two positioning rods 140. Furthermore, each of the two ends of the first connecting rod 120 in the inverted U shape can have a first hole 121; each positioning rod 140 can have a first connecting hole 141 corresponding to the first hole 121, and the first connecting hole 141 is specifically located at one end of each positioning rod 140 into which one end of the inverted U-shaped first connecting rod 120 is inserted; the second connecting rod 130 can pass through the first connecting holes 141 and the first holes 121 in a left-right direction (also referred to as the second direction) to connect the two positioning rods 140 and the first connecting rod 120.Optionally, the second connecting rod 130, extending in a left-right direction, can, for example, pass with its left end from right to left through the first hole 121 at a right end of the inverted U-shaped first connecting rod 120 and the first connecting hole 141 at an end of a positioning rod 140 on the right side, then move further to the left to pass through the second loop 1112 of the connecting strap 111, and simultaneously through the first hole 121 at a left end of the inverted U-shaped first connecting rod 120 and the first connecting hole 141 at an end of the other positioning rod 140 on the left side. Finally, the left end of the second connecting rod 130 emerges from the first connecting hole 141 at the end of the other positioning rod 140 on the left side. It is evident that the second loop 1112 is located between two positioning rods 140.Therefore, the second connecting rod 130 can be used not only for connection with the connecting strap 111, but also for connection between the positioning rod 140 and the first connecting rod 120. Such a multifunctional design improves the structural compactness of the retaining strap assembly 10. Optionally, the first and second directions need not necessarily be the up-down and left-right directions, as long as they intersect. It is of course conceivable that only a single U-shaped positioning rod 140 is provided within the base 20 and that both ends of the U-shaped positioning rod 140 are designed such that the two ends of the inverted U-shaped first connecting rod 120 can be inserted into them. The shape and number of positioning rods 140 are not specifically defined in the present disclosure. Optionally, the first connecting rod 120 and the second connecting rod 130, after passing through the first loop 1111 and the second loop 1112, can be directly and firmly connected to the base 20 without a connection between the first connecting rod 120 and the second connecting rod 130. Since the connecting strap 111 is guided over the first connecting rod 120 (more precisely, over a portion of the first connecting rod 120 that protrudes from the top of the base 20) and the second connecting rod 130, respectively, by means of the first loop 1111 and the second loop 1112, the base 20 is provided with an exit opening 221 so that the connecting strap 111 can extend between an outer and an inner surface of the base 20. Optionally, as shown in Figures 1, 4, and 5, the base 20 is provided with an exit opening 221 so that the connecting strap 111 can extend between the first loop 1111, which is located outside the base 20, and the second loop 1112, which is located inside the base 20. Furthermore, the exit opening 221 is located between the first loop 1111 and the second loop 1112. Furthermore, the retaining strap assembly 10, as shown in Figures 5 and 6, can also include a guide rod 150, which is arranged within the base 20 and can be configured to guide the path of the connecting strap 114. Optionally, the guide rod 150 is in contact with a portion of the connecting strap 111 located between the first loop 1111 and the second loop 1112, in order to guide the path of the connecting strap 111 between the first loop 1111 and the second loop 1112. The guide rod 150 is connected to the positioning rod 140 and thus indirectly connected to the base 20. The guide rod 150 is also connected to the first connecting rod 120. Optionally, the first connecting rod 120 can be rigidly connected to two positioning rods 140 via the guide rod 150. Optionally, as shown in Figures 12 and 13, the first connecting rod 120 can be rigidly connected to two positioning rods 140.As shown in Figure 14, each of the two ends of the inverted U-shaped first connecting rod 120 further comprises a second hole 122, which is arranged above the corresponding first hole 121, and each positioning rod 140 can further be provided with a second connecting hole 142, which corresponds to the second hole 122. In particular, the second connecting hole 142 is also located at the end of each positioning rod 140, into which one end of the inverted U-shaped first connecting rod 120 is inserted, and is situated above the corresponding first connecting hole 141. Thus, the guide rod 150 can simultaneously pass through the second connecting holes 142 and the second holes 122 in a left-right direction (also referred to as the second direction) to connect the two positioning rods 140 to the first connecting rod 120.Optionally, the guide rod 150, extending in a left-right direction, can, for example, pass with its left end from right to left through the second hole 122 at the right end of the inverted U-shaped first connecting rod 120 and the second connecting hole 142 at the end of one of the positioning rods 140 on the right side, then continue moving to the left and touch the connecting strap 111 to guide the path of the connecting strap 111, and then be guided through the second hole 122 at the left end of the inverted U-shaped first connecting rod 120 and the second connecting hole 142 at the end of the other positioning rod 140 on the left side. Finally, the left end of the guide rod 150 emerges from the second connecting hole 142 at the end of the other positioning rod 140 on the left side.Since the second hole 122 is located above the first hole 121 and the second connecting hole 142 is located above the first connecting hole 141, it can be determined that the guide rod 150 is located above the second connecting rod 130. Furthermore, the guide rod 150 can be arranged parallel to the second connecting rod 130. Optionally, the direction of extension of the guide rod 150 can also intersect with the direction of extension of the second connecting rod 130. The guide rod 150 is also multifunctional and can serve to connect the positioning rod 140 to the first connecting rod 120 and to guide the direction of travel of the connecting strap 111 within the base 20, thereby further improving the compact design of the retaining strap assembly 10. Optionally, the guide rod 150 can be directly and firmly connected to the base 20 and does not have to be indirectly connected to the base 20 via the positioning rods 140. Optionally, the first connecting rod 120 can be rigidly connected to the two positioning rods 140 only via the guide rod 150, and the second connecting rod 130 runs only in a left-right direction through the positioning rods 140, without passing through the first connecting rod 120 in the same direction. Alternatively, the first connecting rod 120 can be rigidly connected to the two positioning rods 140 only via the second connecting rod 130, and the guide rod 150 runs only in a left-right direction through the positioning rods 140, without passing through the first connecting rod 120 in the same direction. As shown in Fig. 5, a portion of the guide rod 150 is flush with the aforementioned outlet opening 221, allowing the connecting strap 111 to extend smoothly under the guidance of the guide rod 150 to the outlet opening 221 and then outwards from the base 20. Optionally, the outlet opening 221 is located at the rear of the guide rod 150, and the connecting strap 111 extends from the front of the guide rod 150; that is, the guide rod 150 contacts the rear of the connecting strap 111 and guides the connecting strap 111 outwards from the base 20 towards the outlet opening 221 at the rear.Optionally, the base 20 comprises a base body 210 and a rear cover 220, which are connected to each other in a forward-reverse direction; the rear cover 220 is located at the rear of the base body 210; the positioning rod 140 is fixedly attached to the base body 210 (more precisely, to the rear of the base body 210); and the outlet opening 221 is located on the rear cover 220 of the base 20. Inside the base 20, the connecting strap 111 can be guided through the second loop 1112 over the second connecting rod 130, extend upward and forward from the second loop 1112 to the front of the guide rod 150, and then extend upward and backward from the front of the guide rod 150. Finally, the connecting strap 111 runs outward from the base 20 through the outlet opening 221 (i.e.,behind the rear cover 220) and then upwards to the first loop 1111, which is slipped over the first connecting rod 120. Optionally, the outlet opening 221 can be positioned higher than the guide rod 150 to ensure that the connecting strap 111 extends upwards from the second loop 1112. It should be noted that, in terms of its structure, the base 20 comprises the base body 210 and the rear cover 220, and that, in terms of its shape, the base 20 can be considered to consist of the vertical part 240 and the horizontal part 250. As shown in Figures 1 to 3 and 7 to 8, the retaining strap 110 can further comprise an adjusting strap 112 and an adjusting device 113. The adjusting strap 112 is connected to the connecting strap 111 via the adjusting device 113 and is designed for a detachable connection to the vehicle. The adjusting strap 112 is positioned between the adjusting device 113 and the vehicle, and the adjusting device 113 is configured to lock or unlock a length of the adjusting strap 112 between the adjusting device 113 and the vehicle.Optionally, the connecting strap 111 is connected to the base 20 and the adjusting device 113 and has a fixed length between the base 20 and the adjusting device 113; the adjusting strap 112 runs through the adjusting device 113 and has an adjustable length between the adjusting device 113 and the vehicle, so that a working length of the restraint strap 110 between the base 20 and the vehicle can be set. The connecting strap 111 and the adjusting strap 112 can each be connected to two opposite ends of the adjusting device 113 (hereinafter referred to as the fixed end 1131 and the actuating end 1132). As shown in Figs. 8 and 11, a portion of the connecting strap 111 between the first loop 1111 and the second loop 1112 forms a third loop 1113 by wrapping it around the connecting strap 111 to the adjusting device 113, and this third loop 1113 is slipped over the adjusting device 113. In particular, the fixed end 131 of the adjusting device 113 can be provided with an opening through which the connecting strap 111 can be passed; and the connecting strap 111 is passed through the opening of the fixed end 131 of the adjusting device 113 and sewn to form the third loop 1113. The adjusting device 113 can be provided with a rod element at the fixed end 1131 of the adjusting device 113, wherein the rod element is located on one side of the opening and the third loop 1113 is slipped over the rod element. As described above, at least part of the first connecting rod 120 is arranged above the top of the base 20, such that the part of the first connecting rod 120 located above the top of the base 20, together with the top of the base 20, encloses a winding space S. Optionally, the inverted U-shaped first connecting rod 120, as shown in Figures 1 and 3 to 6, comprises two vertical segments spaced apart from each other and arranged opposite each other, as well as an intermediate segment connected between the two vertical segments.After the two ends of the inverted U-shaped first connecting rod 120 have been inserted into the two positioning rods 140, parts of the two vertical segments on both sides of the inverted U-shape as well as the intermediate segment of the inverted U-shape can protrude from the top of the base 20 and thus create the winding space S between the top of the base 20 and the parts of the two vertical segments as well as the intermediate segment that protrude from the top of the base 20. As shown in Fig. 5, the connecting strap 111 passes through the winding space S and forms the third loop by winding. Optionally, the path of the connecting strap 111, extending from the exit opening 221 in the rear cover 220, can be understood as follows: The connecting strap 111 enters the winding space S from back to front, continues forward a certain distance to extend over the first connecting rod 120, then turns rearward to return to the winding space S from front to back (or turns from front to back), forming two overlapping segments, and winds upward and forward to a front face of the first connecting rod 120, so that the connecting strap 111 reaches the front face of the first connecting rod 120 (or the winding space S) and thus forms three overlapping segments.In front of the first connecting rod 120, the three overlapping segments are joined together (e.g., by sewing) to form a connecting part 1114 (e.g., seams), and the first loop 1111 and the third loop 1113 are formed on both sides of the connecting part 114. It can be seen that the third loop 1113 is located in front of the first connecting rod 120 and that the winding directions of the first loop 1111 and the third loop 1113 are opposite, with the connecting strap 111 being wound from back to front to form the first loop 1111 and from front to back to form the third loop 1113. Furthermore, the connecting part 1114 is located at the front of the first connecting rod 120, while the outlet opening 221 is located at the rear of the first connecting rod 120.It is evident that the connecting part 1114 and the outlet opening 221 are located on two opposite sides of the first connecting rod 120. Optionally, the third loop 1113 can be located on the back of the first connecting rod 120; the connecting strap 111 passes through the winding space S only when forming the first loop 1111; the connecting strap 111 is sewn at different points to form the first loop 1111 and the third loop 1113, and the winding directions of the first loop 1111 and the third loop 1113 are identical. As shown in Figures 7 and 8, the adjusting strap 112 can have an adjusting end 1121 and a connecting end 1122, and the adjusting strap 112 passes through the actuating end 1132 of the adjusting device 113. Optionally, the actuating end 1132 can be provided with an opening through which the adjusting end 1121 can be passed to connect the adjusting strap 112 to the actuating end 1132. The connecting end 1122 is connected to a corresponding connecting part of the vehicle, and the adjusting device 113 is configured to adjust the length of the adjusting strap 112 between the connecting end 1122 and the actuating end 1132. In this way, the restraint strap assembly 10 can be fitted to various vehicle models to ensure optimal fastening and safety between the safety seat and the vehicle. Optionally, the adjusting strap 112 can be connected at the connecting end 1122 with a connecting element 1123 (e.g.a hook) to create a detachable connection with an upper restraint strap interface of the vehicle. As shown in Fig. 7, the adjusting device 113 can also be provided at its actuating end 1132 with an adjusting knob 1133 (for example, a push button or a rotary knob), wherein the adjusting knob 1133 has a locked state and an unlocked state. When the adjusting knob 1133 is in the locked state, the length of the adjusting strap 112 between the connecting end 1122 and the actuating end 1132 cannot be changed. When the adjusting knob 1133 is in the unlocked state, the length of the adjusting strap 112 between the connecting end 1122 and the actuating end 1132 is adjustable.A user can move the adjusting knob 1133 from the locked state to the unlocked state by pressing or turning it, thereby allowing the connecting end 1122 of the adjusting strap 112 to be pulled in a direction away from the adjusting device 113, thus increasing the length of the adjusting strap 112 between the connecting end 1122 and the actuating end 1132, or allowing the connecting end 1122 of the adjusting strap 112 to be pulled back towards the adjusting device 113, thus decreasing the length of the adjusting strap 112 between the connecting end 1122 and the actuating end 1132. It should be noted that the adjusting strap 112 and the adjusting device 113 shown in Fig. 7 are located at the front of the base 20; however, during assembly or use of the retaining strap assembly 10, the adjusting strap 112 and the adjusting device 113 are raised to the rear of the base 20 (as shown in Figs. 1, 2 to 3). During the movement of the adjusting strap 112 and the adjusting device 113 from front to back (as shown in Fig. 1, 2 to 3), the adjustable strap 112 and the adjusting device 113 are raised to the rear of the base 20.(as shown in Figure 8) the adjusting strap 112 and the adjusting device 113 run over the first connecting rod 120, that is, in addition to the first loop 1111, another part (for example, the third loop 1113) of the connecting strap 111 is also guided over the first connecting rod 120, so that the adjusting device 113 and the adjusting strap 112 can reach the rear of the base 20, thereby connecting the adjusting strap 112 to the vehicle, which can ensure a certain height of an exit position of the retaining strap 110 (optionally of the connecting strap 111) and also prevent the safety seat 1 from tipping over. Optionally, the retaining strap 110 can only include the connecting strap 111, which is directly connected to the corresponding connecting part of the vehicle. In such a case, the retaining strap 110 does not have a length adjustment function. The diagram above schematically describes a situation in which the restraint strap assembly 10 is arranged on the base 20. In another case, where the base 20 is straight or not present at all, the restraint strap assembly 10 can be attached directly to the seat body 30, optionally to the backrest 310 of the seat body 30. Similar to the arrangement on the base 20, the first connecting rod 120 is arranged at least partially above a top surface of the seat body 30 (optionally the backrest 310) and, together with the top surface of the seat body 30 (optionally the backrest 310), forms the winding space S. The positioning rod 140 is arranged inside the seat body 30 (optionally on the rear of the main body of the backrest 310).The second connecting rod 130 and the guide rod 150 are both located inside the seat body 30 (optionally the backrest 310) and are both connected to the positioning rod 140 and the first connecting rod 120. The seat body 30 (optionally a rear cover of the backrest 310) may be provided with the outlet opening 221. The connection relationship between the retaining strap 110 and the first connecting rod 120 and the second connecting rod 130, as well as the positional relationship between the positioning rod 140 and the first connecting rod 110, the second connecting rod 120, and the guide rod 150, is as described above and is not repeated here. The following describes in detail the procedure for mounting the retaining strap assembly 10 to the base. It is understood that the connecting strap 111 can be pre-sewn (e.g., as part of a sewing operation) to form the first loop 1111 and the second loop 1112, with the first loop 1111 being located above the second loop 1112. The dashed lines in Figures 5, 7 to 8, and 11 represent seam lines (e.g., stitches), and as shown in these figures, the connecting strap 111 can also form the third loop 1113 adjacent to the first loop 1111 when forming the first loop 1111. However, it should be noted that if the retaining strap 110 consists only of the connecting strap 111, the connecting strap 111 may not form the third loop 1113. Furthermore, the connecting strap 111 can be guided through the adjusting device 113 before the sewing process and then sewn to form the closed third loop 1113. Alternatively, the adjusting device 113 can be a structure with a closable opening, i.e., the closed third loop 1113 is first formed by the sewing process, then the adjusting device 113 is connected to the third loop 1113 through its open opening, and the opening is closed after the connection. As shown in Figures 9, 10, 11, 12, 13 to 14, the first connecting rod 120 can be guided through the first loop 1111 during assembly and attached to the rear cover 220 of the base 20 (e.g., by snapping it into place). The connecting strap 111 is then guided through the exit opening 221 of the rear cover 220; that is, one end of the connecting strap 111, which has the second loop 1112, is guided from back to front through the exit opening 221 to reach the front of the rear cover 220. Alternatively, this end can be left unstitched, and the closed second loop 1112 can be formed by stitching after the end has been guided through the rear cover 220.In this way, when dimensioning the outlet opening 221, only the thickness and width of the connecting strap 111 itself need to be taken into account, without having to consider any increase in thickness caused by sewing the second loop 1112 or even an enlargement due to the incorporation of additional elements (such as elements for connecting the connecting rods) into the second loop 1112. Alternatively, one end, which has the second loop 1112, can first be passed through the outlet opening 221 and reach the front of the rear cover 220, after which the first connecting rod 120 can be passed through the first loop 1111 and attached to the rear cover 220 of the base 20.That is to say, the present disclosure does not expressly restrict the sequence between passing the connecting strap 111 through the rear cover 220 and passing the first connecting rod 120 through the first loop 1111. The two ends of the inverted U-shaped first connecting rod 120 are then inserted into the ends of the two positioning rods 140, the positioning rods 140 being attached to the base body 210 of the base 20, so that the rear cover 220 of the base 20 is mounted on the base body 210. It is understood, however, that the rear cover 220 and the base body 210 are not yet firmly connected to each other at this point, and that a mounting gap exists between them so that the second connecting rod 130 can be simultaneously passed through the first connecting holes 141 of the positioning rods 140 and the first holes 121 of the first connecting rod 120, thereby connecting the first connecting rod 120 to the two positioning rods 140. It is evident that in a case where the first connecting rod 120 has the shape of an inverted U, the first loop 1111 can be located in a central position of the horizontal segment of the inverted U, and the second loop 1112 can be suspended between the two vertical segments of the inverted U. Thus, after the two ends of the first connecting rod 120 have been inserted into the ends of the two positioning rods 140, the second connecting rod 130, upon insertion, first passes through the first connecting hole 141 and the first hole 121 on one side, then through the second loop 1112, and subsequently through the first connecting hole 141 and the first hole 121 on the other side, so that the second connecting rod 130 not only establishes the connection between the first connecting rod 120 and the two positioning rods 140, but also passes through the second loop 1112. Furthermore, the aforementioned mounting gap allows the guide rod 150 to be simultaneously guided through the second connecting holes 142 of the positioning rods 140 and the second holes 122 of the first connecting rod 120, thus connecting the first connecting rod 120 to the two positioning rods 140. The second connecting holes 142 are located above the first connecting holes 141, and the second holes 122 are located above the first holes 121, so that the guide rod 150 can be positioned above the second connecting rod 130. Additionally, when inserted into the positioning rods 140 and the first connecting rod 120, the guide rod 150 can make contact with the connecting strap 111 at its rear. Therefore, the guide rod 150 can play a guiding role in directing the connecting strap 111 in both vertical and horizontal directions. Furthermore, as shown in Figs. 6 and 14, the end of the second connecting rod 130 protrudes from the positioning rod 140 on the other side, and the end of the guide rod 150 protrudes from the positioning rod 140 on the other side. As shown in Fig.As shown in Figure 12, the end of the second connecting rod 130 has a fixing hole 131, and the end of the guide rod 150 has a fastening hole 151. After the second connecting rod 130 and the guide rod 150 have passed through the positioning rods 140 and the first connecting rod 120, the connection between the second connecting rod 130, the positioning rods 140, and the first connecting rod 120 can be secured by a fastening element 160 of the retaining strap assembly 10, which passes through the fixing hole 131 of the second connecting rod 130. The connection between the guide rod 150, the positioning rods 140, and the first connecting rod 120 can be secured by another fastening element 160 of the retaining strap assembly 10, which passes through the fastening hole 151 of the guide rod 150. Optionally, the fastening elements 160 can be fastening clips, as shown in Figure 12.Figure 12 illustrates, for example, an “S-shaped clamp” or a “spring clamp” to fix the positions of the second connecting rod 130 and the guide rod 150 and to prevent their movement; at the same time, such fastening devices enable quick assembly and disassembly. However, the present disclosure is not limited to this. It is evident that the fixing hole 131 can be provided only at one end of the second connecting rod 130, while the other end of the second connecting rod 130 is designed to have a larger diameter than the first connecting hole 141 of the positioning rod 140 (as shown in Figs. 6 and 14) in order to prevent the other end of the second connecting rod 130 from entering the first connecting hole 141. The fixing hole 131 can also be provided at either end of the second connecting rod 130, so that the interaction of the fastening element 160 and the fixing hole 131 prevents displacement of the two ends of the second connecting rod 130. Likewise, the fastening hole 151 can be provided at one or both ends of the guide rod 150, but this will not be discussed in detail here. Finally, the rear cover 220 can also be attached to the base body 210 (e.g., with screws) to complete the assembly of the retaining strap assembly 10. The assembly process described above is simple and practical, and several components of the retaining strap assembly 10 can be multifunctional, which improves the structural functionality and compactness of the retaining strap assembly 10. When the retaining strap assembly 10 is mounted on the seat body 30, the mounting procedure corresponds to the procedure described above, and it is only necessary to replace the base body 210 of the base 20 with the main body of the backrest 310 of the seat body 30 and the rear cover 220 of the base 20 with the rear cover of the backrest 310, which will not be discussed in detail here. As described above, the connecting strap 111 of the restraint strap assembly 10, according to the present disclosure, is guided simultaneously over the first connecting rod 120, which is located above the top of the base 20, and the second connecting rod 130, which is located inside the base 20. This not only improves the stability of the connecting strap 111 and the base 20, but also increases the height of the connection point of the connecting strap 111, thereby allowing the restraint strap assembly 10 to be attached to the vehicle at a higher position. This makes the safety seat 1, including the restraint strap assembly 10, more stable on the vehicle and reduces the risk of the safety seat 1 tipping forward in the event of sudden braking or even an impact. After reviewing and implementing the contents disclosed in the description, a person skilled in the art can readily imagine further embodiments of the present disclosure. The present disclosure is intended to cover all variants, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and incorporate generally known knowledge or conventional technical means in the prior art that are not disclosed in the present disclosure. The description and embodiments serve only as examples; the actual scope of the present disclosure is defined by the claims of the present disclosure. Although the present disclosure has been described with reference to typical embodiments, the terms used here serve only for illustration and as examples and are not to be understood as limiting. Since the present disclosure can be implemented in various forms without deviating from the essence and principles of the present disclosure, it should be noted that the embodiments mentioned above are not limited to the details mentioned, but are to be interpreted as broadly as possible within the scope defined by the claims. Consequently, all modifications falling within the scope of the claims or their equivalents are covered by the claims.

Claims

Restraint strap arrangement for connecting a base of a safety seat to a vehicle, wherein the restraint strap arrangement comprises a first connecting bar, a second connecting bar and a restraint strap, wherein the first connecting bar is arranged at least partially above a top of the base and the second connecting bar is arranged inside the base; wherein the restraint strap is connected to the second connecting bar and to a part of the first connecting bar which is located above the top of the base and is detachably connected to the vehicle. A restraint strap arrangement according to claim 1, wherein the restraint strap comprises a connecting strap which is connected to the first connecting rod and the second connecting rod; wherein the connecting strap forms a first loop and a second loop by wrapping around it at connection points with the first connecting rod and the second connecting rod; wherein the first connecting rod passes through the first loop and the second connecting rod passes through the second loop. Restraint strap arrangement according to claim 1, wherein the first connecting rod is connected to the second connecting rod. Restraint strap arrangement according to claim 2, further comprising a positioning rod which is arranged together with the second connecting rod inside the base, wherein the first connecting rod and the positioning rod are connected to each other along a first direction, and the second connecting rod is connected to the first connecting rod and the positioning rod which are connected to each other along a second direction which intersects the first direction. Restraint strap arrangement according to claim 2, wherein the base is provided with an exit opening so that the restraint strap can extend between the first loop located above the top of the base and the second loop located inside the base. Retaining strap arrangement according to claim 5, further comprising a guide rod which is arranged together with the second connecting rod inside the base, wherein the guide rod is in contact with a part of the connecting strap which is located between the first loop and the second loop in order to guide a direction of travel of the connecting strap between the first loop and the second loop. Restraint strap arrangement according to claim 2, wherein the restraint strap further comprises an adjusting device and an adjusting strap, the adjusting strap being connected to the connecting strap via the adjusting device and being detachably connected to the vehicle, and the adjusting device being configured to lock or unlock a length of the adjusting strap between the adjusting device and the vehicle; wherein a portion of the connecting strap located between the first loop and the second loop forms a third loop by wrapping around it, and this third loop is pulled over the adjusting device. Retaining strap arrangement according to claim 7, wherein a winding space is formed between the top of the base and a part of the first connecting rod located above the top of the base, and the part of the connecting strap located between the first and the second loop passes through the winding space and forms the third loop by winding. Retaining strap arrangement according to claim 7, wherein the connecting strap is provided with a connecting part and the connecting strap is closed by the connecting part to form the first loop and the third loop; wherein the first loop and the third loop are located on two opposite sides of the connecting part and a winding direction of the connecting strap at the first loop is opposite to a winding direction of the connecting strap at the third loop. Safety seat comprising: a base, a seat body, and the restraint belt arrangement according to any one of claims 1 to 9, wherein the seat body is rotatably connected to the base and has a forward-facing and a rearward-facing state of use relative to the base, and wherein the restraint belt arrangement is arranged between the base and the vehicle.

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