Restraint belt arrangement and child safety seat

Abstract

Restraint belt assembly (40) for securing a child safety seat (1) to a vehicle, the restraint belt assembly (40) comprising: an adjusting device (430) for adjusting the length of the restraint strap assembly (40); a belt attachment section (450) that can be attached to a corresponding attachment section of the vehicle; an upper retaining strap (410) comprising two straps and connected via the adjustment device (430) to the child safety seat (1) and the belt attachment section (450), wherein at least one strap of the upper retaining strap (410) passes through the adjusting device (430) to form at least two free ends (4111), characterized by the fact that the adjusting device (430) is a two-way adjusting device (440) which is able to adjust a length of the retaining strap assembly (40) in two opposite directions, wherein first ends of the two straps of the upper restraint strap (410) are each attached to both sides of the child safety seat (1) and second ends of the two straps are each connected to the adjustment device (430), and wherein the belt attachment section (450) is fixedly or slidably connected to one of the two belts.

Description

TECHNICAL AREA

[0001] The invention relates to a restraint strap assembly for securing a child safety seat to a vehicle, in particular a restraint strap assembly that is versatilely adjustable, wherein the restraint strap assembly comprises: an adjustment device for setting the length of the restraint strap assembly; a strap attachment section that can be attached to a corresponding attachment section of the vehicle; an upper restraint strap comprising two straps and connected to the child safety seat and the strap attachment section via the adjustment device; wherein at least one strap of the upper restraint strap passes through the adjustment device to form at least two free ends. The invention further relates to a child safety seat and another restraint strap assembly. BACKGROUND

[0002] A child safety seat is a seat specifically designed for children. By installing the child safety seat in a car, and with a child sitting in it, the child is restrained by the child safety seat to ensure the child's safety.

[0003] A typical child safety seat consists of a base and a seat mounted on the base. An ISOFIX connector is located on one side of the base, and a top tether strap is attached to the back of the seat. The child safety seat is secured by connecting the top tether strap and the ISOFIX connector to the corresponding anchor points in the car. The ISOFIX connector attaches to both sides of the base, and the top tether strap connector attaches to the top of the child safety seat. This three-point attachment securely fixes the child safety seat to the car seat, preventing it from tipping over in the event of a collision.

[0004] Once installed, the upper restraint strap must be tightened to securely connect it to the other parts of the child safety seat. However, conventional methods only allow the upper restraint strap to be adjusted in one direction, and in some vehicle types, limited space can make it difficult to apply sufficient tension. Therefore, there is a need for a restraint strap assembly that allows for easy tightening of the upper restraint strap in various ways, and for a child safety seat equipped with such an assembly.

[0005] For example, the prior art document FR 2 548 983 A1 discloses a child seat for motor vehicles, consisting of an enclosing shell comprising a backrest and a seat surface, the backrest having means for attaching or passing through at least one belt for securing the seat directly to the vehicle seat, the belt being anchored to the vehicle chassis, and the seat being completed by at least one belt or safety harness to keep the child in the seat independently of the belt.

[0006] Furthermore, patent US 2011 / 0193394A1 discloses a fastening system for a child car seat, comprising: a rigid adapter plate with a first, a second and a third opening, wherein the first and second openings are designed to accommodate a first and second connector of a locking strap of the child car seat, and the third opening is designed to accommodate a third connector attached to an upper restraint strap, the upper restraint strap being connected to a top of the child car seat.

[0007] Furthermore, the publication CN 208 248 021 U describes an electronic alarm system for a child safety seat, comprising a sensor unit and an intelligent terminal. The system is designed as follows: the sensor unit contains a control unit, an interface sensor, a buckle sensor, and a pressure sensor; the control unit is attached to the child safety seat; the interface sensor is an ISOFIX interface sensor, attached to the ISOFIX connector; the buckle sensor is a seat belt sensor; the pressure sensor is attached to the seat's upholstery; and the ISOFIX interface sensor and the seat belt buckle sensor are connected to the control circuit.

[0008] The control unit is connected to the smart terminal via a wireless module, and after processing the collected electrical signals, the control unit promptly reports back to the smart terminal via the wireless module; the control unit and the sensors of the induction part are powered by the built-in power supply and the external power supply. SUMMARY

[0009] The object of the invention is to provide a restraint belt arrangement and a child safety seat that can reduce or eliminate at least one of the above-mentioned defects.

[0010] The object is achieved by a restraint strap arrangement for securing a child safety seat to a vehicle with the features of claim 1. It is provided that the adjusting device is a two-way adjusting device capable of adjusting the length of the restraint strap arrangement in two opposite directions, wherein first ends of the two straps of the upper restraint strap are each attached to both sides of the child safety seat and second ends of the two straps are each connected to the adjusting device, and wherein the strap attachment section is fixedly or slidably connected to one of the two straps.

[0011] In one embodiment, the child safety seat comprises a base, a seat arranged above the base, and an upper bar attached to a rear of the base.

[0012] In a non-inventive embodiment, the adjustment device is a one-way adjustment device, the upper restraint strap comprises three straps, wherein one end of a first strap and one end of a second strap of the three straps are attached to both sides of the child safety seat, wherein the other ends of the first strap and the second strap of the three straps are each connected to both ends of a third strap of the three straps via two one-way adjustment devices, and wherein the strap attachment section is fixedly or slidably connected to one of the three straps and the upper restraint strap passes through the two one-way adjustment devices to form two free ends.

[0013] In a non-inventive embodiment, the two one-way adjustment devices are aligned in the same direction, so that the two free ends extend in the same direction.

[0014] In a non-inventive embodiment, the two one-way adjustment devices are aligned in opposite directions, so that the two free ends extend in opposite directions.

[0015] In a non-inventive embodiment, the belt fastening section is fixedly or slidably connected to the first belt or the second belt.

[0016] In a non-inventive embodiment, the belt fastening section is fixedly or slidably connected to the third belt.

[0017] In one embodiment according to the invention, the adjusting device is a two-way adjusting device, and the at least two free ends are formed by the upper retaining strap that runs through the two-way adjusting device.

[0018] In a non-inventive embodiment, the upper retaining strap comprises three straps, wherein one end of a first strap and one end of a second strap of the three straps are attached to both sides of the child safety seat, and wherein the other ends of the first strap and the second strap of the three straps are connected via a connecting element to one end of a third strap of the three straps.

[0019] In a non-inventive embodiment, the upper retaining strap further comprises a fourth strap, wherein the third strap is connected to the fourth strap via two one-way adjusting devices or a two-way adjusting device, and wherein the strap fastening section is fixedly or slidably connected to the fourth strap.

[0020] In a non-inventive embodiment, the upper restraint strap comprises three straps, wherein both ends of a first strap of the three straps are attached to both sides of the child safety seat, wherein one end of a second strap of the three straps is fixedly or slidably connected to the first strap, wherein one end of a third strap of the three straps is connected to the other end of the second strap via two one-way adjusting devices or a two-way adjusting device, and wherein the strap attachment section is fixedly or slidably connected to the other end of the third strap.

[0021] In a non-inventive embodiment, the upper restraint strap comprises two straps, wherein one end of each of the two straps is attached to both sides of the child safety seat, wherein the other ends of each of the two straps are connected to the adjustment device, wherein the strap attachment section is fixedly or slidably connected to one of the two straps, wherein the adjustment device is a two-way adjustment device, and wherein the two-way adjustment device can adjust a length of the restraint strap arrangement in two opposite directions.

[0022] In a non-inventive embodiment, the upper retaining strap comprises two straps, wherein one end of a first strap of the two straps is attached to the child safety seat, wherein the other end of the first strap is connected to an end of a second strap of the two straps via two one-way adjusting devices or a two-way adjusting device, and wherein the strap attachment section is fixedly or slidably connected to the other end of the second strap.

[0023] In a non-inventive embodiment, the two one-way adjustment devices are aligned in opposite directions, and the two one-way adjustment devices are connected to each other by a connecting strap.

[0024] In an embodiment according to the invention, the adjusting device has a locked and a released position, wherein in the locked position the upper retaining strap, which runs through the adjusting device, is clamped by the adjusting device, and wherein in the released position of the adjusting device a movement of the upper retaining strap, which runs through the adjusting device, is permitted relative to the adjusting device.

[0025] The invention further relates to a child safety seat. The child safety seat comprises: a base provided with a rearwardly projecting anchoring part; a seat coupled to the base; an upper bar attached to a rear side of the base; and the restraint strap assembly described above, wherein the upper restraint strap of the restraint strap assembly is attached to the upper bar.

[0026] In an embodiment according to the invention, the upper rod comprises two vertical rods and a receiving section, wherein each of the upper surfaces of the two vertical rods is provided with an opening.

[0027] In one embodiment according to the invention, the upper rod comprises two vertical rods and a receiving section, and an upper surface of the receiving section is provided with an opening in the center.

[0028] In one embodiment according to the invention, the upper rod comprises a vertical rod and a receiving section, and an upper surface of the receiving section is provided with an opening in the center.

[0029] Furthermore, the invention relates to a restraint strap assembly for securing a child safety seat to a vehicle. The restraint strap assembly comprises: a two-way adjusting device suitable for adjusting the length of the restraint strap assembly in two opposite directions; a strap attachment section that can be attached to a corresponding attachment point of the vehicle; and an upper restraint strap comprising a plurality of separate straps, the upper restraint strap connecting the two-way adjusting device to the child safety seat and the two-way adjusting device to the strap attachment section.

[0030] In an embodiment according to the invention, the two-way adjusting device comprises: an adjusting device housing with two first openings pointing in opposite directions; two buttons, each arranged at the two first openings and movable in the directions of entry into and exit from the adjusting device housing; a fixed plate attached to a base of the adjusting device housing and formed with two second openings; two locking elements arranged inside the adjusting device housing and movable together with the two buttons to form a locked position and a released position.

[0031] In an embodiment according to the invention, the plurality of straps comprises two straps, wherein the two straps are able to enter the adjusting device housing via the two second openings, run through a gap between the two locking elements and the fixed plate and extend out of the adjusting device housing to form free ends extending in two opposite directions, and wherein in the locked position the two locking elements and the fixed plate clamp the two straps each, and in the released position the two locking elements and the fixed plate allow the movement of the two straps.

[0032] In an embodiment according to the invention, when the free ends are pulled in the released position, the retaining strap arrangement is shortened, and when parts of the two straps other than the free ends are pulled, the retaining strap arrangement is lengthened.

[0033] In one embodiment according to the invention, a spring is arranged between the two buttons, which exerts a force on each of the two buttons in order to move them out of the adjusting device housing.

[0034] In one embodiment according to the invention, two tightening indicator windows are arranged on the top of the adjustment device housing to show whether the belts are tightened.

[0035] The described restraint belt assembly can be tightened in at least two directions, making installation easier. Furthermore, because the tensioning force can be applied more easily, it can be tightened more securely, thus improving the safety of the restraint belt assembly. The length of the restraint belt assembly can be adjusted over a greater range. The restraint belt assembly can be tightened on different sides of the child safety seat, so that the tightening process can be carried out conveniently regardless of which side of the vehicle seat the child safety seat is installed on. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] When one considers the following detailed description of preferred embodiments of the invention in conjunction with the accompanying drawings, various objectives, features, and advantages of the invention become clearer. The drawings are merely exemplary representations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numbers always refer to the same or similar elements. This shows: Fig. 1 a side view of a child safety seat in a first embodiment; Fig. 2 a front view of the child safety seat; Fig. 3 a perspective view of the child safety seat; Fig. 4 a top view of an adjustment device for a restraint strap assembly; Fig. 5 a perspective view of the adjustment device; Fig. 6 a perspective view of another embodiment of the child safety seat; Fig. 7 a perspective view of another embodiment of the child safety seat; Fig. 8 a schematic view of an embodiment of the retaining strap arrangement; Fig. 9 a schematic view of another embodiment of the retaining strap arrangement; Fig. 10 a schematic view of another embodiment of the retaining strap arrangement; Fig. 11 a schematic view of another embodiment of the retaining strap arrangement; Fig. 12 a sectional view of the adjustment device of the retaining strap assembly; Fig. 13 a schematic view of another embodiment of the restraint belt arrangement of a child safety seat; Fig. 14 a schematic view of another embodiment of the restraint belt arrangement of the child safety seat; Fig. 15 a schematic view of another embodiment of the restraint belt arrangement of the child safety seat; Fig. 16 a schematic view of another embodiment of the restraint belt arrangement of the child safety seat; Fig. 17 a perspective view of a two-way adjustment device of the child safety seat; Fig. 18 another perspective view of the two-way adjustment mechanism of the child safety seat; Fig. 19 is a sectional view of the two-way adjustment device of the child safety seat, in which one button is not pressed; Fig. Figure 20 is a sectional view of the two-way adjustment device of the child safety seat, showing a button being pressed; Fig. 21 a perspective sectional view of the two-way adjustment device of the child safety seat; Fig. 22 a top view of the two-way adjustment device of the child safety seat, with one button not pressed; Fig. 23 a view from below of the two-way adjustment device of the child safety seat according to the invention, in which one button is not pressed; Fig. 24 a top view of the two-way adjustment device of the child safety seat according to the invention, in which a button is pressed; and Fig. 25 a schematic sectional view of the two-way adjustment device of the child safety seat according to the invention. DETAILED DESCRIPTION

[0037] To further explain the principle and structure of the invention, the preferred embodiments are described in detail with reference to the accompanying drawings. However, these embodiments serve only for illustration and explanation.

[0038] The singular forms of "a", "states", and "the" used in the description and the accompanying claims also include plural forms, unless the context clearly indicates otherwise. It should also be noted that the terms "and / or", as used herein, refer to and include any or all possible combinations of one or more of the related listed elements.

[0039] The following section describes in more detail the various concepts and embodiments of the restraint belt arrangement and the child safety seat. The child safety seat can be rotated between a rearward, sideways, and forward position for ease of use. It goes without saying that the various concepts outlined above and further explained below can be implemented in a variety of ways. Furthermore, the examples of specific implementations and applications serve primarily for illustrative purposes, enabling those skilled in the art to implement solutions and alternatives that are obvious to them.

[0040] Fig. Figure 1 is a side view of an embodiment of a child safety seat, and Fig. Figure 2 is a front view of the embodiment of the child safety seat.

[0041] The child safety seat 1 can consist of a base 10, a seat 20 arranged above the base 10 and an upper bar 30 attached to the back of the base 10.

[0042] The base 10 can be provided with an anchoring part 110 that projects outwards to the rear. The anchoring part 110 can be an ISOFIX connector (a connector that can be attached to an ISOFIX interface) and comprises two anchoring arms 111.

[0043] The child safety seat 1 may include a restraint belt assembly 40. The restraint belt assembly 40 may also be a separate device that is not connected to the child safety seat 1. The restraint belt assembly 40 may be a top tether connector (a connector that can be attached to a top tether interface).

[0044] The upper bar 30 can be attached to the rear of the base 10. In particular, the upper bar 30 can be erected essentially vertically at the rear of the base 10. An upper section of the upper bar 30 can be provided with an opening 330. In various embodiments, the upper bar 30 can be provided with one or two openings 330. An upper restraint strap 410 (described in detail below) of the restraint strap assembly 40 is attached to the child safety seat 1 through the opening 330. The upper restraint strap 410 extends, for example, through the opening 330 into the upper bar 30 and is secured therein.

[0045] In one embodiment, the upper rod 30 can comprise two vertical rods 310 and a fastening section 320, and the tops of the two vertical rods 310 are each provided with an opening 330.

[0046] One end of each of two straps (e.g., a connecting strap 412 and an adjusting strap 411) of the upper restraint strap 410 can be attached to the upper bar 30 via the two vertical bars 310. A connecting strap 412 and two adjusting straps 411 of the upper restraint strap 410 are connected to each other via two adjusting devices 430, and a strap attachment section 450 is fixedly or movably connected to one of the adjusting straps 411, so that the restraint strap assembly 40 as a whole forms a Y or V shape. Furthermore, one end of the straps can move a certain distance within the upper bar 30.

[0047] One end of each of the two straps (e.g., two connecting straps 412) of the upper restraint strap 410 can be attached to the upper bar 30 by the two vertical bars 310. Furthermore, two adjusting devices 430 are attached to the other ends of the two straps. Both ends of an adjusting strap 411 pass through the two adjusting devices 430 to form two free ends 4111, and the strap attachment section 450 is fixedly or movably connected to the adjusting strap 4111, so that the restraint strap assembly 40 as a whole is Y- or V-shaped.

[0048] One end of each of two straps (e.g., two connecting straps 412) in the upper retaining strap 410 can be attached to the upper bar 30 by two vertical bars 310. A connecting element 460 is attached to the other ends of the two straps. One end of one of the adjusting straps 411 is attached to the connecting element 460. The other end of this adjusting strap 411 can be passed through an adjusting device 430, and another adjusting strap 411 can be passed through another adjusting device 430 to form two free ends 4111, so that the retaining strap assembly 40 as a whole is Y- or V-shaped. The two adjusting devices 430 mentioned above can be connected to each other (e.g., via the connecting straps 412).

[0049] In one embodiment, both ends of a strap in the upper retaining strap 410 (e.g., the connecting strap 412) are each attached to the upper rod 30 by the two vertical rods 310. The adjusting straps 411 are fixedly or slidably connected to the strap (optionally to another adjusting strap 411, the connecting strap 412, and the adjusting device 430), so that the retaining strap assembly 40 as a whole is T-shaped.

[0050] In one embodiment as in Fig. As shown in Figure 6, the upper rod 30 can comprise two vertical rods 310 and a fastening section 320.

[0051] Specifically, the upper rod 30 comprises: two vertical rods 310 erected symmetrically on the rear of the base 10; a fastening section 320 connected to the upper ends of the two vertical rods 310; and a receiving section 340 located centrally on a lower surface of the fastening section 320.

[0052] One end of a strap (e.g., a connecting strap 412) in the upper retaining strap 410 can be attached to the upper bar 30. The end of the strap can move a limited distance within the upper bar 30.

[0053] In one embodiment as in Fig. As shown in Figure 7, the upper rod 30 can include a vertical rod 310 and a receiving section 340.

[0054] One end of a strap (e.g., a connecting strap 412) in the upper retaining strap 410 can be attached to the upper bar 30. The end of the strap can move a certain distance within the receiving section 340. In this application, two adjusting devices 430 are replaced according to the invention by a two-way adjusting device 440 (explained further below). According to the invention, one adjusting device 430 can also be replaced by a two-way adjusting device 440.

[0055] The vertical rod 310 and the mounting section 320 can be made of different materials, e.g. the vertical rod 310 is made of metal and the mounting section 320 is made of plastic.

[0056] The seat 20 is rotatably mounted on the base 10 and can rotate relative to the base 10 about an axis that is substantially perpendicular to an upper surface of the base 10, through a range of angles. A lower surface and the upper surface of the base 10 can form an angle, so that the seat 20 is inclined forwards.

[0057] Fig. Figure 8 is a schematic view of an embodiment of the disclosed retaining strap arrangement.

[0058] The restraint belt assembly 40 can comprise: at least two adjusting devices 430; an upper restraint belt 410, which is attached to the child safety seat 1 and passes through at least two adjusting devices 430 to form the same number of free ends 4111 as those of the at least two adjusting devices; a belt attachment section 450, which is connected to the upper restraint belt 410 and can be attached to a vehicle. The at least two adjusting devices 430 can each lock and unlock the upper restraint belt 410 passing through them.

[0059] In one embodiment, the retaining strap assembly 40 has two adjustment devices 430. However, the retaining strap assembly 40 can also have more than two adjustment devices 430.

[0060] As in Fig. As shown in Figure 12, the connecting strap 412 can extend into the adjusting device 430 from one side, bypass a fastening section on the adjusting device 430, and then extend out of the adjusting device 430 from a lower side. In this way, the connecting strap 412 can be fastened to the adjusting device 430. The adjusting strap 411 (e.g., connected to the fastening section 450) can enter the adjusting device 430 through an opening on the underside of the adjusting device 430, bypass part of the button 432, pass downwards through a gap formed between the button 432 and the adjusting device housing 431, and finally extend from a left side of the adjusting device 430 to form a free end 4111.When button 432 is pressed to the right, the gap between button 432 and the adjusting device housing 431 increases, allowing the adjusting strap 411 to move freely relative to the adjusting device 430. When button 432 is released, the gap between button 432 and the adjusting device housing 431 decreases (e.g., due to the elastic force of a return spring), so that the adjusting strap 411 is clamped (jammed) by button 432 and the adjusting device housing 431 and cannot move freely relative to the adjusting device 430.

[0061] Fig. 4 is a top view of the adjustment device of the retaining strap arrangement according to the invention, and Fig. Figure 5 is a perspective view of the adjustment device of the retaining strap arrangement of the disclosure.

[0062] In one embodiment, one end of the adjusting device 430 can be designed as the adjusting end and the adjusting end can be designed, for example, as a button.

[0063] In another embodiment, the adjusting device 430 can comprise the adjusting device housing 431 and the button 432. The button 432 can have an opening on one side, located, for example, above or below the button 432. A woven retaining strap (e.g., the adjusting strap 411, which is explained below) can enter the button 432 from the opening and be guided through a slot of variable width defined by the button 432 and the housing 431, and then extend out of the opening.

[0064] The adjusting device 430 can be provided with a return mechanism, such as a spring or similar, so that when the button 432 is not pressed, the slot tends to contract, thus trapping the woven retaining strap passing through the adjusting device 430 and preventing it from moving relative to the adjusting device 430. When the button 432 is pressed, the slot tends to widen, allowing the woven retaining strap passing through the adjusting device 430 to move relative to it.

[0065] The adjusting device 430 can also have other structures. For example, the woven retaining strap can enter the adjusting device 430 from one side and exit from the other. The specific structure of the adjusting device 430 is not limited here, as long as it enables the adjusting device to adjust the length of the woven retaining strap passing through it and to lock the woven retaining strap when no adjustment is required.

[0066] The adjusting device 430 can be provided with a fastening section on the other side, so that another woven retaining strap can be firmly connected to the adjusting device 430.

[0067] The adjusting device 430 may be provided with an opening that has a mark indicating whether the adjusting device 430 is locked or unlocked. The mark could, for example, be a differently colored symbol.

[0068] The strap fastening section 450 can be a hook (or a hook-shaped anchor) that can be fixed or slidably arranged at a distal end of the upper retaining strap 410.

[0069] The two adjusting devices 430 of the restraint belt assembly 40 can be arranged in opposite directions, so that two free ends 4111, formed by the upper restraint belt 410 which passes through the two adjusting devices 430, extend in opposite directions. Since the upper restraint belt 410 is flexible, the directions of the adjusting devices 430 arranged on the upper restraint belt 410 can change. Therefore, the two adjusting devices 430 are arranged in opposite directions, which means that after the child safety seat 1 is fastened to a vehicle by the restraint belt assembly 40, when the restraint belt assembly 40 is in a taut state, the two adjusting devices 430 are arranged such that they point in substantially opposite directions.The two free ends 4111 in opposite directions means that after the child safety seat 1 is attached to a vehicle by the restraint belt assembly 40, the two free ends 4111 extend in essentially opposite directions when they are just emerging from the two adjustment devices 430. Due to the effect of gravity, the two free ends 4111 are, for example, in a downward-falling position. Alternatively, the restraint belt assembly 40 can also have only one adjustment device 430.

[0070] The two adjusting devices 430 of the retaining strap arrangement 40 can be arranged in the same direction, so that the two free ends 4111 formed by the upper retaining strap 410 passing through the two adjusting devices 430 project outwards in the same direction.

[0071] As in Fig. As shown in Figure 8, the upper retaining strap 410 in one embodiment can comprise a first adjusting strap 411a, a second adjusting strap 411b, a first adjusting device 430a, a second adjusting device 430b, and a connecting strap (or first connecting strap) 412. The first adjusting strap 411a, the second adjusting strap 411b, and the connecting strap 412 can be connected to each other (e.g., directly or indirectly via the first adjusting device 430a and the second adjusting device 430b) to form the upper retaining strap 410.

[0072] One end of the connecting strap 412 is attached to one side of the upper rod 30 (e.g. on the inside of a vertical rod 310), and the other end of the connecting strap 412 is attached to the first adjusting device 430a.

[0073] One end of the first adjustment strap 411a is attached to the other side of the upper bar 30 (e.g., to the inside of the other vertical bar 310), and the other end of the first adjustment strap 411a passes through the second adjustment device 430b to form a free end 4111 extending towards the child safety seat 1.

[0074] One end of the second adjustment strap 411b is attached to the second adjustment device 430b, and the other end of the second adjustment strap 411b passes through the first adjustment device 430a to form a free end 4111 extending away from the child safety seat 1.

[0075] One end of the belt fastening section 450 can be slidably or rigidly connected to the second adjusting belt 411b, and the other end of the belt fastening section is designed as a hook.

[0076] In this way, the restraint strap assembly 40 can be tightened in two opposite directions, making it easier to install. Because the tensioning force can be applied more easily, the restraint strap assembly 40 can also be tightened securely, thus improving its safety. Furthermore, the length of the restraint strap assembly 40 can be adjusted over a wider range.

[0077] Alternatively, in this embodiment, the upper retaining strap 410 can have only one adjustment device 430. Alternatively, in this embodiment, the upper retaining strap 410 can have three adjustment devices 430. According to the invention, the adjustment devices 430 are two-way adjustment devices (as explained below).

[0078] As in Fig. As shown in Figure 9, the upper retaining strap 410 in one embodiment can have a first adjusting strap 411a, a second adjusting strap 411b, a first adjusting device 430a, a second adjusting device 430b, a first connecting strap 412a and a second connecting strap 412b.

[0079] The two ends of the first connecting strap 412a are each attached to both sides of the upper pole 30, for example to the two vertical poles 310 or to the inside of the two vertical poles 310.

[0080] One end of the first adjustment strap 411a is slidably or fixedly connected to the first connecting strap 412a, and the other end of the first adjustment strap 411a passes through the first adjustment device 430a to form a free end 4111 extending towards the child safety seat 1.

[0081] The two ends of the second connecting strap 412b are attached to the first adjusting device 430a and the second adjusting device 430b, respectively.

[0082] One end of the second adjusting strap 411b passes through the second adjusting device 430b to form a free end 4111 extending from the child safety seat 1, and the strap attachment section 450 is attached to the other end of the second connecting strap 412b.

[0083] In this way, the restraint belt arrangement 40 takes up relatively little space and can be installed in a relatively narrow vehicle interior.

[0084] Alternatively, in this embodiment, the upper retaining strap 410 can have only one adjustment device 430. Alternatively, in this embodiment, the upper retaining strap 410 can have three adjustment devices 430. According to the invention, one adjustment device 430 is a two-way adjustment device (as explained below).

[0085] As in Fig. As shown in Figure 10, the retaining strap arrangement can further comprise a connecting element 460 for connecting two connecting straps 412 and an adjusting strap 411. The two connecting straps 412 can be attached to one side of the connecting element 460, and an adjusting strap 411 can be attached to the other side of the connecting element 460. The connecting element 460 can be a sheet of iron with three elongated holes formed in it.

[0086] Alternatively, in this embodiment, the upper retaining strap 410 can have only one adjustment device 430. Alternatively, in this embodiment, the upper retaining strap 410 can have three adjustment devices 430. According to the invention, one adjustment device 430 is a two-way adjustment device (as explained below).

[0087] Fig. Figure 11 is a schematic view of another embodiment of the disclosed retaining strap arrangement.

[0088] The restraint strap assembly 40 can comprise a first adjusting device 430a, a second adjusting device 430b, and an adjusting strap 411. The first adjusting device 430a and the second adjusting device 430b are arranged in the same direction. The two ends of the adjusting strap 411 each pass through the first adjusting device 430a and the second adjusting device 430b, respectively, to form two free ends 4111 extending in the same direction (the direction away from the child safety seat). The first adjusting device 430a and the second adjusting device 430b can be attached to either side of the upper bar 30 via a connecting strap 412. The strap attachment section 450 is slidably connected to the adjusting strap 411.

[0089] When the child safety seat 1 is installed on the right seat and on the left side of the vehicle, the restraint belt arrangement 40 can be adjusted using the adjustment device on the closer side, making it easier to apply force. Adjustments made using two adjustment devices have a similar effect.

[0090] Furthermore, the adjustment range of the length of the retaining strap arrangement 40 can be extended by means of two adjustment devices.

[0091] Alternatively, in this embodiment, the upper retaining strap 410 can have only one adjustment device 430. Alternatively, in this embodiment, the upper retaining strap 410 can have three adjustment devices 430. According to the invention, the adjustment device 430 is a two-way adjustment device (as explained below).

[0092] Fig. Figure 13 is a schematic view of an embodiment of the restraint strap assembly 40 of the child safety seat. The restraint strap assembly 40 may comprise an upper restraint strap 410, an adjusting device 430, and a strap attachment section 450. The upper restraint strap 410 may comprise an adjusting strap 411 and a connecting strap 412. The adjusting strap 411 may pass through the adjusting device 430 to form a free end 4111. The adjusting device 430 may have a button. When the button is not pressed, the adjusting device 430 locks the adjusting strap 411, and when the button is pressed, the adjusting device 430 releases the adjusting strap 411. At this time, the length of the adjusting strap 411 can be shortened by pulling the free end 4111 and lengthened by pulling the adjusting strap 411.

[0093] Fig. Figure 14 is a schematic view of another embodiment of the restraint belt assembly 40 of the child safety seat. The restraint belt assembly 40 can have two adjustment devices 430. The two adjustment devices 430 can be arranged in opposite directions. The upper restraint belt 410 can comprise two adjustment straps 411 and a connecting strap 412. The connecting strap 412 is located between the two adjustment devices 430. The two adjustment straps 411 each pass through the two adjustment devices 430 to form two free ends 4111 in opposite directions, so that the length of the restraint belt assembly 40 can be adjusted by pulling on the two free ends 4111 in two opposite directions.

[0094] In one embodiment, the belt fastening section 450 is attached to one end of one of the two adjusting straps 411, and the other of the two adjusting straps 411 is attached to the upper bar 30.

[0095] In another embodiment, the belt fastening section 450 is slidably connected to one of the two adjustment belts 411, and the other of the two adjustment belts 411 is attached to the upper bar 30.

[0096] In a further embodiment according to the invention, the retaining strap assembly 40 also comprises a two-way adjusting device 441. The two-way adjusting device 441 can adjust the length of the retaining strap assembly 40 in two opposite directions. In other words, the two adjusting straps 411 can each extend from both ends through the two-way adjusting device 441 to form two free ends 4111 in opposite directions, so that the length of the retaining strap assembly 40 can be adjusted by pulling on the two free ends 4111 in two opposite directions.

[0097] Fig. Figure 15 is a schematic view of another embodiment of the restraint belt arrangement of the child safety seat, and Fig. Figure 16 is a schematic view of another embodiment of the restraint belt arrangement of the child safety seat. The in Fig. 15 and Fig. The embodiments shown in Figure 16 are similar to those in Fig. 13 and Fig. 14 embodiments shown, wherein a two-way adjusting device 440 is used to replace the two adjusting devices 430 and the connecting strap 412.

[0098] Fig. Figure 17 is a perspective view of a two-way adjustment device of the child safety seat; Fig. Figure 18 is another perspective view of the two-way adjustment device of the child safety seat; Fig. Figure 19 is a sectional view of the two-way adjustment device of the child safety seat, with one button not pressed; Fig. Figure 20 is a sectional view of the two-way adjustment device of the child safety seat, in which a button is pressed; Fig. Figure 21 is a perspective sectional view of the two-way adjustment device of the child safety seat; Fig. Figure 22 is a top view of the two-way adjustment device of the disclosed child safety seat, in which one button is not pressed; Fig. Figure 23 is a bottom view of the two-way adjustment device of the disclosed child safety seat, in which one button is not pressed; Fig. Figure 24 is a top view of the two-way adjustment device of the disclosed child safety seat, in which a button is pressed; Fig. Figure 25 is a schematic sectional view of the two-way adjustment device of the disclosed child safety seat.

[0099] The two-way adjusting device 440 can comprise the following: an adjusting device housing 441 with two first openings pointing in opposite directions; two buttons 442, each arranged at the two first openings and capable of moving in and out of the adjusting device housing 441; a fixed plate 443, attached to a base of the adjusting device housing 441 and provided with two second openings; two locking elements 444, arranged inside the adjusting device housing 441, each moving together with the two buttons 442 into a locked position and a released position, with two straps (e.g.,, upper retaining straps 410) each enter the adjusting device housing 441 through the two second openings, pass through a gap between the two locking elements 444 and the fixed plate 443 and can extend out of the adjusting device housing 441 to form two free ends extending in opposite directions, wherein in the locked position the two locking elements 444 and the fixed plate 443 each clamp the two straps and in the released position the two locking elements 444 and the fixed plate 443 allow the movement of the two straps.

[0100] A spring can be arranged between the two keys 442, which applies a force to each of the two keys 442 in order to reset the adjusting device housing 441.

[0101] Two tension indicator windows 445 can be provided on the top of the adjusting device housing 441, showing whether the two straps are tensioned. Different positions on the tops of the two buttons 442 can be marked with different colors, so that when the buttons 442 are in the locked position, the tension indicator windows 445 show one color (e.g., green) on the top of the buttons 442, and when the buttons 442 are in the released position, the tension indicator windows 445 show the other color (e.g., red) on the top of the buttons 442. Alternatively, the tension indicator windows 445 can also be arranged at other locations on the adjusting device housing 441, e.g., on a side face, a bottom face, and at both ends, and the application is not limited to this. The tension indicator windows 445 can also be used to provide information in other ways, such as…Lines, graphic markings, and the present application is not limited thereto. The tightening indicator windows 445 can also be made of a transparent material, so that the interior of the adjustment device housing 441 is visible.

[0102] The two-way adjusting device 440 can adjust the length of the upper retaining strap 410 in different directions.

[0103] As in Fig. As shown in Figure 25, when the upper retaining strap 410 passes through the two-way adjusting device 440, it first enters the adjusting device housing 441 from the openings of the locking elements 444 upwards, then passes upwards through an inner surface of the fixed plate 443 and the buttons 442 (the center in Fig. 25), then bypasses the fixed plate 443 and extends downwards again on the outside of the fixed plate 443 (left and right sides in Fig.25), to pass through the gap between the fixed plate 443 and the locking elements 444, and finally extends downwards from the adjusting device housing 441 below the locking elements 444.

[0104] In this way, the upper retaining strap 410 can be wedged between the locking elements 444 and the fixed plate 443 when the upper retaining strap 410 is tightened (because when the adjusting straps 111 are tensioned, the upper retaining strap 410 pulls the fixed plate 443 outwards, so that the fixed plate 443 and the locking elements 444 are forced towards each other) to achieve the positioning of the upper retaining strap 410. If the length of the upper retaining strap 410 needs to be adjusted, the buttons 442 can be pressed to remove the fixed plate 443 from the locking elements 444, and the upper retaining strap 410 is released so that a length adjustment can be made.

[0105] When the two-way adjusting device 440 is used, the two upper retaining straps 410, which pass through the two-way adjusting device 440, each extend into the upper bar 30 and are connected to the strap attachment section 450, so that the length of the retaining strap assembly 40 can be adjusted in different directions.

[0106] After considering the description and practical application of the invention, the person skilled in the art will readily think of other embodiments. For example, the restraint strap arrangement can be connected to the base 10 and also to the seat 20. REFERENCE MARK LIST 1 child safety seat 10 Base 110 Anchoring part 111 Anchoring arm 20 seats 30 Top bar 310 Vertical bar 320 fastening section 330 Opening 340 Recording section 40 Restraint belt arrangement 410 Upper restraint strap 411 Adjustment strap 411a First adjustment strap 411b Second adjustment strap 4111 Free End 412 Connecting strap 412a First connecting strap 412b Second connecting strap 430 Adjustment device 430a First adjusting device 430b Second adjustment device 431 Housing 432 Key (Setting End) 440 Two-way adjusting device 441 Adjustment device housing 442 key 443 Hard disk 444 Locking element 445 Tightening indicator window 450 Belt fastening section 460 Connecting element

Claims

[1] Restraint belt assembly (40) for securing a child safety seat (1) to a vehicle, the restraint belt assembly (40) comprising: an adjusting device (430) for adjusting the length of the restraint strap assembly (40); a belt attachment section (450) that can be attached to a corresponding attachment section of the vehicle; an upper retaining strap (410) comprising two straps and connected via the adjustment device (430) to the child safety seat (1) and the belt attachment section (450), wherein at least one strap of the upper retaining strap (410) passes through the adjusting device (430) to form at least two free ends (4111), characterized by , that the adjusting device (430) is a two-way adjusting device (440) which is able to adjust a length of the retaining strap assembly (40) in two opposite directions, wherein first ends of the two straps of the upper restraint strap (410) are each attached to both sides of the child safety seat (1) and second ends of the two straps are each connected to the adjustment device (430), and wherein the belt attachment section (450) is fixedly or slidably connected to one of the two belts. [2] Restraint belt arrangement (40) according to claim 1, characterized by , that the child safety seat (1) comprises a base (10), a seat (20) arranged above the base (10) and an upper bar (30) attached to a rear of the base (10). [3] Restraint belt arrangement (40) according to claim 1, characterized by , that the adjusting device (430) is a two-way adjusting device (440) and the at least two free ends (4111) are formed by the upper retaining strap (410) which passes through the two-way adjusting device (440). [4] Restraint belt arrangement (40) according to claim 1, characterized by, that the adjusting device (430) has a locked position and a released position, wherein in the locked position the upper retaining strap (410) passing through the adjusting device (430) is clamped, and wherein in the released position the adjusting device (430) allows the upper retaining strap (410) passing through the adjusting device (430) to move relative to the adjusting device (430). [5] Child safety seat (1), with a base (10) which is provided with a rearward projecting anchoring part (110); a seat (20) connected to the base (10); an upper rod (30) which is attached to the rear of the base (10); characterized by a retaining strap arrangement (40) according to claim 1, wherein the upper retaining strap (410) of the retaining strap arrangement (40) is attached to the upper bar (30). [6] Child safety seat (1) according to claim 5, characterized by, that the upper rod (30) comprises two vertical rods (310) and a fastening section (320), and wherein each of the upper ends of the two vertical rods (310) is provided with an opening (330). [7] Child safety seat (1) according to claim 5, characterized by , that the upper rod (30) comprises two vertical rods (310) and a fastening section (320), and wherein an upper surface of the fastening section (320) is provided with an opening (330) in the center. [8] Child safety seat (1) according to claim 5, characterized by , that the upper rod (30) comprises a vertical rod (310) and a receiving section (340), and wherein an upper surface of the receiving section (340) is provided with an opening (330) in the center. [9] Restraint belt assembly (40) for securing a child safety seat (1) to a vehicle, characterized by a two-way adjusting device (440) for adjusting the length of the retaining strap assembly (40) in two opposite directions; a belt attachment section (450) that can be attached to a corresponding attachment section of the vehicle; and an upper retaining strap (410) comprising several straps that are separate from each other, wherein the upper retaining strap (410) connects the two-way adjustment device (440) to the child safety seat (1) and the two-way adjustment device (440) to the belt attachment section (450). [10] Restraint belt arrangement (40) according to claim 9, characterized by , that the two-way adjusting device (440) comprises: an adjustment device housing (441) with two first openings pointing in opposite directions; two buttons (442) which are each arranged at the first two openings and are movable in the direction of entry into and exit from the adjusting device housing (441); a fixed plate (443) which is attached to the bottom of the adjusting device housing (441) and is provided with two second openings; and two locking elements (444) which are arranged inside the adjusting device housing (441) and which can be moved together with the two buttons (442) to form a locked and a released position. [11] Restraint belt arrangement (40) according to claim 10, characterized by, that two of the straps are configured to enter the adjusting device housing (441) via the two second openings, pass through gaps between the two locking elements (444) and the fixed plate (443) and extend out of the adjusting device housing (441) to form free ends (4111) extending in two opposite directions, wherein in the locked position the two locking elements (444) and the fixed plate (443) each clamp the two straps and in the released position the two locking elements (444) and the fixed plate (443) allow the movement of the two straps. [12] Restraint belt arrangement (40) according to claim 11, characterized by , that in the released position, when the free ends (4111) are pulled, the retaining strap assembly (40) is shortened, and when sections other than the free ends (4111) of the two straps are pulled, the retaining strap assembly (40) is lengthened. [13] Restraint belt arrangement (40) according to claim 10, characterized by , that a spring is arranged between the two keys (442) to exert a force on the two keys (442) to push them out of the adjusting device housing (441). [14] Restraint belt arrangement (40) according to claim 10, characterized by , that on the top of the adjustment device housing (441) two tightening indicator windows (445) are formed, each of which indicates whether the two belts are tightened.

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