Automatic safety belt adjustment device and child safety seat equipped with the same

Abstract

To provide a safety belt automatic adjustment apparatus having advantages of automatic adjustment for a safety belt, a simple structure, convenient operation ability and enhanced safety.SOLUTION: A safety belt automatic adjustment apparatus includes a safety belt buckle fastening assembly, a safety belt retractor, and a linking component. The safety belt buckle fastening assembly is rotatably connected to a seat body of a child safety seat and for connecting with a safety belt buckle. The safety belt retractor is used for retracting a safety belt, and includes a restraining assembly for restraining a movement of the safety belt in a predetermined direction. The linking component is installed between the safety belt buckle fastening assembly and the safety belt retractor, and the safety belt buckle fastening assembly rotates to drive the linking component and the restraining assembly, so as to restrain or release the safety belt winding around the safety belt retractor.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. Patent Application No. 17 / 875,442, filed July 28, 2022, which is a continuation of U.S. Patent Application No. 17 / 093,520, filed November 9, 2020. The contents of these applications are incorporated herein by reference.

[0002] The present invention relates to an automatic safety belt adjuster and a child safety seat equipped with the same, and more particularly to an automatic safety belt adjuster and a child safety seat equipped with the same, which have the advantages of simple structure, convenient operation, and automatic adjustment for excellent safety. [Background technology]

[0003] To improve safety when riding in a car, safety child seats are adapted for children aged 0 to 12 years. In addition to safety concerns, convenience is another important theme of safety child seats. Due to children of different ages and body types, the safety belt of a safety child seat needs to be adjusted frequently. However, adjusting a conventional safety belt is often troublesome. The safety belt passes through the bottom of the safety child seat and is exposed in front of the safety child seat. To adjust the length of the seat belt, the bottom of the seat belt needs to be pulled by hand, and the seat belt can be locked in the desired position by an internal webbing locking member, which is very inconvenient and not suitable for current needs. Therefore, to solve the above problems, Or at least improve To provide an improved automatic safety belt adjusting device with a simple structure, convenient operation, and improved safety. It is desirable . Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, this invention Akira is , Preferably, To solve the above-mentioned problems, there is provided an automatic safety belt adjusting device and an automatic safety belt adjusting device having the advantages of automatic safety belt adjustment, simple structure, convenient operation and enhanced safety. do. [Means for solving the problem]

[0005] One aspect of the present invention provides an automatic safety belt adjuster, the automatic safety belt adjuster comprising a safety belt retractor and a link component for retracting a safety belt, the safety belt retractor comprising a rotating shaft, a restraining assembly, a first ratchet, and a second ratchet, the first ratchet and the second ratchet being connected to opposite ends of the rotating shaft, the safety belt being wound around the rotating shaft, the restraining assembly being configured to selectively engage or disengage with the first ratchet and the second ratchet, the teeth of the first ratchet and the second ratchet being opposite to each other, rotation of the rotating shaft in a first direction restrains the safety belt from being released from the rotating shaft when the first ratchet is engaged with the restraining assembly and the second ratchet is disengaged from the restraining assembly, and rotation of the rotating shaft in a second direction opposite to the first direction restrains the safety belt from being released from the rotating shaft when the first ratchet is engaged with the restraining assembly and the second ratchet is disengaged from the restraining assembly, When a second ratchet is engaged with the restraining assembly and the first ratchet is disengaged from the restraining assembly, the safety belt is restrained from wrapping around the rotating shaft, the restraining assembly comprising a first restraining component selectively engaging or disengaging with the first ratchet and a second restraining component selectively engaging or disengaging with the second ratchet, when the first restraining component is engaged with the first ratchet, the second restraining component disengages from the second ratchet, when the second restraining component is engaged with the second ratchet, the first restraining component disengages from the first ratchet, the first restraining component is drivable by the link component to selectively engage or disengage with the first ratchet, and the second restraining component is drivable by the link component to selectively engage or disengage with the second ratchet.

[0006] Preferably, the safety belt retractor further comprises a retractor mounting component; the rotating shaft is pivotally connected to the retractor mounting component; the first restraining component is pivotally mounted to the retractor mounting component for selectively engaging and disengaging the first ratchet; The second restraining component is pivotally mounted to the retractor mounting component for selectively engaging and disengaging with the second ratchet.

[0007] Preferably, the device further comprises a first elastic component and a second elastic component, the first elastic component being between the first restraining component and the retractor mounting component, and the second elastic component being between the second restraining component and the retractor mounting component.

[0008] Preferably, the mechanism further comprises a first elastic component, the first constraining component being drivable by the link component to disengage from the first ratchet, and the first constraining component being drivable by the first elastic component to engage with the first ratchet.

[0009] Preferably, the first constraining component extends along the axial direction of the rotating shaft, one end of the first constraining component is configured to engage or disengage with the first ratchet, and the other end of the first constraining component is driven by the link component.

[0010] Preferably, the safety belt retractor further comprises a retractor mounting component, the rotating shaft is pivotally connected to the retractor mounting component, an intermediate portion of the second restraining component is pivotally connected to the retractor mounting component, one end of the second restraining component is driven by the link component, and the other end of the second restraining component is configured to engage or disengage with the second ratchet. .

[0011] Preferably, the link component has an abutment surface formed thereon, the abutment surface being spaced apart from the first constraining component when the first constraining component is engaged with the first ratchet, and the abutment surface being in abutment with the first constraining component when the first constraining component is disengaged from the first ratchet.

[0012] Preferably, a groove structure is formed in the link component along the movement direction of the link component, the abutment surface is a side wall portion of the groove structure, the first constraint component is disposed in the groove structure, and when the link component moves, the first constraint component moves within the groove structure.

[0013] Preferably, the first and second constraining components are located on either side of the second ratchet along the radial direction of the rotating shaft, and the first constraining component is spaced apart from the second ratchet.

[0014] Preferably, the seat further comprises a safety belt buckle fastening assembly, the safety belt buckle fastening assembly being exposed from the base of the child safety seat and being rotatable about an axis relative to the base of the child safety seat, and the safety belt buckle fastening assembly and the link component being fixedly connected.

[0015] Preferably, the safety belt buckle fastening assembly comprises the rotating shaft and an insert component connected to the rotating shaft, the insert component being exposed from the base of the child safety seat, the link component being fixed to the rotating shaft, and the rotating shaft rotating to drive and rotate the rotating shaft and the link component.

[0016] Preferably, the second restraining component is located along the length of the link component between the safety belt buckle fastening assembly and the first restraining component.

[0017] Preferably, the link component drives the first constraining component to disengage from the first ratchet and drives the second constraining component to disengage from the second ratchet.

[0018] Preferably, the device further comprises a first elastic component and a second elastic component, wherein the first elastic component is biased to drive the first constraining component into engagement with the first ratchet, the second elastic component is biased to drive the second constraining component into engagement with the second ratchet, and simultaneously the link component drives the first constraining component to disengage from the first ratchet and the second elastic component drives the second constraining component to engage with the second ratchet, and simultaneously the link component drives the second constraining component to disengage from the second ratchet and the first elastic component drives the first constraining component to engage the first ratchet.

[0019] In a further aspect of the present invention, a child safety seat comprises the above-described automatic safety belt adjusting device and a safety belt.

[0020] In a further aspect of the present invention, a child safety seat comprises an automatic safety belt adjuster, a base, a safety belt, and a safety belt buckle connected to the safety belt, the safety belt buckle being buckled to the safety belt buckle fastening assembly.

[0021] In summary, the safety belt retractor is locked or released by adjusting the state of the safety belt buckle fastening assembly of the automatic safety belt adjusting device of the present invention, thereby automatically locking or releasing the safety belt. When a child sits in the safety child seat and the safety belt buckle fastening assembly is fastened to the safety belt buckle, the safety belt is automatically fastened, which has the advantages of automatic adjustment of the safety belt without manual adjustment, simple structure, convenient operation, and improved safety.

[0022] These and other aspects of the present invention Embodiment These and other features will become increasingly apparent to those skilled in the art from a reading of the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic diagram of a child safety seat according to an embodiment of the present application; [Figure 2] 1 is a view showing a seat body of a child safety seat according to an embodiment of the present application; [Figure 3] 1 illustrates an automatic safety belt adjuster according to an embodiment of the present application in a released state. [Figure 4] 2 shows a safety belt retractor of an automatic safety belt adjuster according to an embodiment of the present application in a released state; FIG. [Figure 5] 1 illustrates an automatic safety belt adjuster according to an embodiment of the present application in a restrained state; [Figure 6] 1 shows a safety belt retractor of an automatic safety belt adjuster according to an embodiment of the present application in a restrained state; DETAILED DESCRIPTION OF THE INVENTION

[0024] To explain the technical specifications and structural features of the present invention, as well as the objectives and effects achieved, relevant embodiments and figures are described below.

[0025] In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which form a part hereof. The drawings show, by way of illustration, specific embodiments in which the invention may be practiced. In this regard, directional terms such as "top," "bottom," "front," and "back" are used with reference to the orientation of the figures being described. Components of the invention can be positioned in a number of different orientations. As such, the directional terminology is used for purposes of explanation and not limitation. Accordingly, the drawings and description are illustrative in nature and not restrictive.

[0026] Please refer to Figures 1 to 6. Figure 1 is a schematic diagram of a child safety seat 1 according to an embodiment of the present application. Figure 2 is a diagram showing a seat main body 11 of the child safety seat 1 according to an embodiment of the present application. Figure 3 is a diagram showing an automatic safety belt adjuster 2 according to an embodiment of the present application in a released state. Figure 4 is a diagram showing a safety belt retractor 22 of the automatic safety belt adjuster 2 according to an embodiment of the present application in a released state. Figure 5 is a diagram showing an automatic safety belt adjuster 2 according to an embodiment of the present application in a restrained state. Figure 6 is a diagram showing the safety belt retractor 22 of the automatic safety belt adjuster 2 according to an embodiment of the present application in a restrained state. The child safety seat 1 includes a seat main body 11 and a seat pad 12 provided on the seat main body 11. The child safety seat 1 further includes a safety belt 10 and a safety belt buckle 13 connected to the safety belt 10. The safety belt 10 includes a cross belt 101, a waist belt 102, and two shoulder belts 103. Furthermore, the safety child seat 1 includes an automatic safety belt adjuster 2 for connecting or buckling with a safety belt buckle 13. When a child sits in the safety child seat 1, the safety belt 10 is automatically fastened after the safety belt buckle 13 is buckled by the automatic safety belt adjuster 2 without manual adjustment.

[0027] 3, the automatic safety belt adjuster 2 is mounted on the base 111 of the seat main body 11 of the child safety seat 1. The automatic safety belt adjuster 2 includes a safety belt buckle fastening assembly 21, a safety belt retractor 22, and a link component mounted between the safety belt buckle fastening assembly 21 and the safety belt retractor 22. Specifically, the safety belt buckle fastening assembly 21 is rotatably connected to the base 111 of the seat main body 11 around an axis and is exposed from the base 111 of the seat main body 11. The safety belt buckle fastening assembly 21 is configured to be buckled with the safety belt buckle 13. The safety belt buckle fastening assembly 21 includes an attachment component 211, a rotating shaft 212 attached to the attachment component 211, and an insertion component 213 connected to the rotating shaft 212 and for connecting or fastening to the safety belt buckle 13. The insert component 213 is exposed from the base 111 of the seat main body 11, and the link component 23 is connected to the rotating shaft 212. The insert component 213 drives the rotating shaft 212 to move and rotate around the axis, and the rotating shaft 212 drives the link component 23 to rotate and move in the circumferential direction around the axis. The circumferential direction includes the up-down direction and the front-back direction.

[0028] The link component 23 is mounted between the safety belt buckle fastening assembly 21 and the safety belt retractor 22. Specifically, a first end of the link component 23 is fixed to a rotating shaft 212 of the safety belt buckle fastening assembly 21, and a second end of the link component 23 extends to abut against the safety belt retractor 22. The safety belt buckle fastening assembly 21 rotates to drive the link component 23 to move in a circumferential direction about the axis. That is, the link component 23 moves forward or backward as the safety belt buckle fastening assembly 21 rotates, and can restrain or release the safety belt 10 wound around the safety belt retractor 22.

[0029] 4 and 6, the safety belt retractor 22 includes a retractor mounting component 221, a rotating shaft 222, a first ratchet 223, and a second ratchet 224. The safety belt 10 is wound around the rotating shaft 222. is pivotally connected to the retractor mounting component 221 , the first ratchet 223 and the second ratchet 224 are attached to the retractor mounting component 221. Rotate relative to The first ratchet 223 is connected to one end of the rotating shaft 222, and the second ratchet 224 is connected to another end of the rotating shaft 222. In particular, the first ratchet 223 and the second ratchet 224 can be fixed on the rotating shaft 222, and the teeth of the first ratchet 223 and the second ratchet 224 are opposite to each other. That is, when the first ratchet 223 is locked, the second ratchet 224 is released, and when the second ratchet 224 is locked, the first ratchet 223 is released.

[0030] 4, the safety belt retractor 22 includes a restraining assembly 220 for restraining movement of the safety belt 10 in a predetermined direction. Preferably, the restraining assembly 220 includes a first restraining component 225 pivotally mounted to the retractor mounting component 221 for selectively engaging or disengaging a first ratchet 223, and a second restraining component 226 pivotally mounted to the retractor mounting component 221 for selectively engaging or disengaging a second ratchet 224. The second restraining component 226 is attached to the link component 23. lengthAlong the extension direction, the second restraining component 226 is located between the safety belt buckle fastening assembly 21 and the first restraining component 225. An intermediate portion of the second restraining component 226 is pivotally connected to the retractor mounting component 221. The first restraining component 225 and the second restraining component 226 are located on two sides of the second ratchet 224 along the radial direction of the rotating shaft 222. Rotation of the rotating shaft 222 in a first direction can be constrained to prevent the safety belt 10 from being released from the rotating shaft 222 when the first ratchet 223 is engaged with the first restraining component 225 of the restraining assembly 220 and the second ratchet 224 is disengaged from the second restraining component 226 of the restraining assembly 220, and rotation of the rotating shaft 222 in a second direction opposite to the first direction can be constrained to prevent the safety belt 10 from being wound around the rotating shaft 222 when the second ratchet 224 is engaged with the second restraining component 226 of the restraining assembly 220 and the first ratchet 223 is disengaged from the first restraining component 225 of the restraining assembly 220.

[0031] Specifically, as shown in FIGS. 3 to 6, the first restraining component 225 is attached to the side of the rotating shaft 222 and extends along the axial direction of the rotating shaft 222, and the first restraining component 225 can be resiliently mounted on the retractor mounting component 221 in a swingable manner by a first elastic component 225a, such as a torsion spring. The first restraining component 225 is mounted on the retractor mounting component 221 in a pivotable manner and for selectively engaging or disengaging with the first ratchet 223. The first resilient component 225a is disposed between the first restraining component 225 and the retractor mounting component 221. The first restraining component 225 may be formed in a plate shape and made of a metal material. One end of the first constraint component 225 is configured to engage or disengage with the first ratchet 223 , and the other end of the first constraint component 225 can be driven by the link component 23 .A protruding portion 2251 is formed on an end of the first constraining component 225 and configured to engage with the sunken portion 2231 of the first ratchet 223. A mating surface 2252 is formed on another end of the first constraining component 225 and configured to abut against an abutment portion, which is an abutment surface 231 formed on a second end of the link component 23. The groove structure may be formed on the link component 23 along the movement direction of the link component 23 (specifically, the front-to-rear direction), and the abutment surface 231 is configured to engage with the recessed portion 2231 of the link component 23. groove The mating surface 2252 of the first constraining component 225 may be disposed within the groove structure when the link component 23 moves, and the mating surface 2252 moves within the groove structure when the first constraining component 225 is disengaged from the first ratchet 223. and contact surface 231 abutting on 。

[0032] The first constraining component 225 can be driven by the link component 23 to selectively engage or disengage the first ratchet 223. The second constraining component 226 is mounted on another side of the rotating shaft 222 and positioned adjacent to the second ratchet 224, and the second constraining component 226 can be resiliently mounted to the retractor attachment component 221 in a swingable manner by a second elastic component 226a, such as a torsion spring. The second elastic component 226a is between the second constraining component 226 and the retractor attachment component 221. The second constraining component 226 can be driven by the link component 23 to selectively engage or disengage the second ratchet 224. Specifically, a central portion of the second restraining component 226 is attached to the retractor mounting component 221 via a pivot, one end of the second restraining component 226 is connected to and driven by the link component 23, and another end of the second restraining component 226 is configured to engage with or disengage from the second ratchet 224.。

[0033] Specifically, when a child is not seated in the child safety seat 1 and the safety belt buckle fastening assembly 21 is not buckled with the safety belt buckle 13, the automatic safety belt adjuster 2 is in a released state, as shown in Fig. 3. At this time, the automatic safety belt adjuster 2 faces forward, the abutment surface 231 on the second end of the link component 23 abuts against the mating surface 2252 on the first restraining component 225, the first restraining component 225 is separated from the first ratchet 223, the end of the second restraining component 226 is connected to the link component 23, and the second elastic component 226a is biased to drive the other end of the second restraining component 226 to engage with the second ratchet 224, as shown in Fig. 4. In this released state, clockwise rotation of the second ratchet 224 is constrained, counterclockwise rotation of the second ratchet 224 is not constrained, and the first ratchet 223 can rotate counterclockwise together with the second ratchet 224. That is, the safety belt retractor 22 is rotated counterclockwise, and the safety belt 10 can be released and retracted.

[0034] When a child sits in the safety car seat 1 and the safety belt buckle fastening assembly 21 buckles and engages with the safety belt buckle 13, the automatic safety belt adjuster 2 is in a restrained state as shown in Fig. 5. When the safety belt buckle fastening assembly 21 is pushed from the position shown in Fig. 3 to the position shown in Fig. 5 along the direction of the arrow, the link component 23 is driven forward along the direction of the arrow by the safety belt buckle fastening assembly 21 to separate from the first restraining component 225, i.e., the abutment surface 231 on the second end of the link component 23 disengages from the mating surface 2252 on the first restraining component 225, and the first elastic component 225a is urged to rotate the first restraining component 225 toward the first ratchet without being abutted by the link component 23, so that it can engage with the first ratchet 223. At this time, the second restraining component 226 is driven by the link component 23 to move away from the second ratchet 224 and disengage from the second ratchet 224, as shown in Fig. 6. In the restrained state, the counterclockwise rotation of the first ratchet 223 is restrained, the clockwise rotation of the first ratchet 223 is not restrained, and the second ratchet 224 can rotate clockwise together with the first ratchet 223. That is, when the safety belt retractor 22 is rotated clockwise, the safety belt 10 is automatically retracted and tightened by the safety belt retractor 22.

[0035] In contrast to the prior art, the automatic safety belt adjusting device of the present application can automatically lock or release the safety belt by adjusting the state of the safety belt buckle fastening assembly to lock or release the safety belt retractor. When a child sits in this safety car seat and the safety belt buckle fastening assembly is buckled with the safety belt buckle, the safety belt will be automatically fastened, thereby having the advantages of automatic adjustment for the safety belt without manual adjustment, simple structure, convenient operation, and high safety.

[0036] Those skilled in the art will readily observe that numerous modifications and variations of the present apparatus and method may be made while retaining the teachings of the present invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

[0037] [Additional note 1] a safety belt buckle fastening assembly rotatably connected to a seat body of the child safety seat and for connecting to a safety belt buckle; a safety belt retractor for retracting a safety belt, the safety belt retractor including a restraining assembly for restraining movement of the safety belt in a predetermined direction; a link component attached between the safety belt buckle fastening assembly and the safety belt retractor, wherein the safety belt buckle fastening assembly rotates to drive the link component and the restraining assembly to restrain or release a safety belt wrapped around the safety belt retractor; An automatic safety belt adjusting device comprising: [Additional note 2] The safety belt retractor is a retractor mounting component; a rotating shaft around which the safety belt is wound; a first ratchet connected to one end of the rotary shaft; a second ratchet connected to the other end of the rotary shaft; The automatic safety belt adjusting device according to claim 1, [Additional note 3] The automatic safety belt adjusting device of claim 2, wherein the restraining assembly includes a first restraining component pivotally mounted on the retractor mounting component for selectively engaging or disengaging with the first ratchet, and when the first ratchet engages with the first restraining component, rotation of the rotating shaft in a first direction is restrained. [Additional note 4] 4. The automatic safety belt adjuster according to claim 3, wherein the first restraining component is elastically attached to the retractor attachment component by a first elastic component. [Additional note 5] The automatic safety belt adjuster of claim 3, wherein the restraint assembly includes a second restraint component pivotally mounted on the retractor mounting component for selectively engaging or disengaging with the second ratchet, and when the second ratchet engages with the second restraint component, rotation of the rotating shaft in a second direction opposite to the first direction is restrained. [Additional note 6] 6. The automatic safety belt adjuster according to claim 5, wherein the second restraining component is elastically attached to the retractor attachment component by a second elastic component. [Additional note 7] The automatic safety belt adjusting device of claim 3, wherein a first end of the link component is fixed to the safety belt buckle fastening assembly, and a second end of the link component abuts the first restraining component. [Additional note 8] The automatic safety belt adjuster according to claim 7, wherein an abutment surface is formed on the second end of the link component, and a mating surface for abutting against the abutment surface is formed on the first restraining component. [Additional note 9] the safety belt buckle fastening assembly Mounting components; a rotating shaft mounted to the mounting component; an insert component connected to the rotating shaft and adapted to connect to the safety belt buckle; The automatic safety belt adjusting device according to claim 1, [Additional Note 10] The seat body, Safety belts and a safety belt buckle connected to the safety belt; an automatic safety belt adjuster for connecting to the safety belt buckle; Equipped with The automatic safety belt adjustment device is a safety belt buckle fastening assembly rotatably connected to the seat body and adapted to connect to the safety belt buckle; a safety belt retractor for retracting the safety belt, the safety belt retractor including a restraining assembly for restraining movement of the safety belt in a predetermined direction; a link component attached between the safety belt buckle fastening assembly and the safety belt retractor, wherein the safety belt buckle fastening assembly rotates to drive the link component and the restraining assembly to restrain or release a safety belt wrapped around the safety belt retractor; A safety child seat equipped with: [Additional Note 11] The safety belt retractor is a retractor mounting component; a rotating shaft around which the safety belt is wound; a first ratchet connected to one end of the rotary shaft; a second ratchet connected to the other end of the rotary shaft; 11. The safety child seat according to claim 10, comprising: [Additional Note 12] A safety child seat as described in Appendix 11, wherein the restraint assembly comprises a first restraint component pivotally mounted to the retractor mounting component for selectively engaging or disengaging with the first ratchet, and when the first ratchet engages with the first restraint component, rotation of the rotating shaft in a first direction is restrained. [Additional Note 13] 13. The child safety seat of claim 12, wherein the first restraining component is resiliently attached to the retractor mounting component by a first resilient component. [Additional Note 14] A safety child seat as described in Appendix 12, wherein the restraint assembly comprises a second restraint component pivotally mounted to the retractor mounting component for selectively engaging or disengaging with the second ratchet, and when the second ratchet engages with the second restraint component, rotation of the rotating shaft in a second direction opposite to the first direction is restrained. [Additional Note 15] 15. The child safety seat of claim 14, wherein the second restraining component is resiliently attached to the retractor attachment component by a second resilient component. [Additional Note 16] A safety child seat as described in Appendix 12, wherein a first end of the link component is fixed to the safety belt buckle fastening assembly and a second end of the link component abuts the first restraint component. [Additional Note 17] A safety child seat as described in appended claim 16, wherein an abutment surface is formed on the second end of the link component, and a mating surface for abutting against the abutment surface is formed on the first restraint component. [Additional Note 18] the safety belt buckle fastening assembly Mounting components; a rotating shaft mounted to the mounting component; an insert component connected to the rotating shaft and adapted to connect to the safety belt buckle; 11. The safety child seat according to claim 10, comprising: [Explanation of symbols]

[0038] 1. Safety child seat 2. Automatic safety belt adjustment device 10 Safety Belt 11 Seat body 13 Safety belt buckle 21 Safety belt buckle fastening assembly 22 Safety belt retractor 23 Link Component 211 Mounting Components 212 Rotating shaft 220 Constraint Assembly 221 Retractor Mounting Component 222 Rotating shaft 223 The First Ratchet 224 The Second Ratchet 225 First Constraint Component 225a First Elastic Component 226 Secondary Constraint Component 226a Second Elastic Component 231 Contact surface

Claims

1. a safety belt retractor and link component for retracting the safety belt; the safety belt retractor comprises a rotating shaft, a restraining assembly, a first ratchet, and a second ratchet; the first ratchet and the second ratchet are connected to opposite ends of the rotating shaft; the safety belt is wound around the rotating shaft; the restraining assembly is configured to selectively engage and disengage the first ratchet and the second ratchet; The teeth of the first ratchet and the second ratchet are oriented in opposite directions to each other; rotation of the rotatable shaft in a first direction is constrained such that the safety belt is not released from the rotatable shaft when the first ratchet is engaged with the restraining assembly and the second ratchet is disengaged from the restraining assembly; rotation of the rotating shaft in a second direction opposite to the first direction is constrained so that the safety belt does not wrap around the rotating shaft when the second ratchet is engaged with the restraining assembly and the first ratchet is disengaged from the restraining assembly; the restraint assembly: a first restraining component selectively engaging and disengaging with the first ratchet; a second restraining component selectively engaging and disengaging with the second ratchet; Equipped with when the first constraining component is engaged with the first ratchet, the second constraining component disengages from the second ratchet; the first constraining component is disengaged from the first ratchet when the second constraining component is engaged with the second ratchet; the first constraining component is actuatable by the link component to selectively engage or disengage the first ratchet; The automatic safety belt adjuster of claim 1, wherein the second restraining component is actuatable by the link component for selectively engaging or disengaging the second ratchet.

2. the safety belt retractor further comprising a retractor mounting component; the rotating shaft is pivotally connected to the retractor mounting component; the first restraining component is pivotally mounted to the retractor mounting component for selectively engaging and disengaging the first ratchet; 2. The automatic safety belt adjuster of claim 1, wherein the second restraining component is pivotally mounted to the retractor mounting component for selectively engaging and disengaging with the second ratchet.

3. further comprising a first elastic component and a second elastic component; the first resilient component is between the first restraining component and the retractor mounting component; 3. The automatic safety belt adjuster of claim 2, wherein the second elastic component is between the second restraining component and the retractor mounting component.

4. further comprising a first elastic component; the first constraining component is actuatable by the link component to disengage from the first ratchet; 2. The automatic safety belt adjuster of claim 1, wherein the first restraining component is drivable by the first resilient component to engage the first ratchet.

5. The first restraint component extends along the axial direction of the rotating shaft; an end of the first constraining component configured to engage or disengage with the first ratchet; 2. The automatic safety belt adjuster of claim 1, wherein the other end of the first restraining component is driven by the link component.

6. The safety belt retractor further comprises a retractor mounting component; the rotating shaft is pivotally connected to the retractor mounting component; an intermediate portion of the second restraining component pivotally connected to the retractor mounting component; one end of the second constraint component is driven by the link component; 2. The automatic safety belt adjuster of claim 1, wherein the other end of the second restraining component is configured to engage and disengage with the second ratchet.

7. The link component is formed with an abutment surface, the abutment surface is spaced from the first constraining component when the first constraining component is engaged with the first ratchet; 2. The automatic seat belt adjuster of claim 1, wherein the abutment surface abuts the first restraining component when the first restraining component is disengaged from the first ratchet.

8. a groove structure is formed in the link component along the movement direction of the link component, the abutment surface is a side wall portion of the groove structure, the first restraining component is disposed in the groove structure; 8. The automatic safety belt adjuster of claim 7, wherein the first restraining component moves within the groove structure when the link component moves.

9. the first and second constraining components are located on opposite sides of the second ratchet along a radial direction of the rotating shaft; 2. The automatic safety belt adjuster of claim 1, wherein the first restraining component is spaced from the second ratchet.

10. a safety belt buckle fastening assembly; the safety belt buckle fastening assembly is exposed from a base of the child safety seat and is rotatable about an axis relative to the base of the child safety seat; 2. The automatic safety belt adjusting device of claim 1, wherein the safety belt buckle fastening assembly and the link component are fixedly connected.

11. the safety belt buckle fastening assembly comprising: the rotating shaft; and an insert component connected to the rotating shaft; the insert component is exposed from the base of the child safety seat; the link component is fixed to the rotating shaft; 11. The automatic safety belt adjuster of claim 10, wherein the rotating shaft rotates to drive the rotating shaft and the link component to rotate.

12. 11. The automatic safety belt adjuster of claim 10, wherein the second restraining component is located between the safety belt buckle fastening assembly and the first restraining component along the length of the link component.

13. 2. The automatic safety belt adjuster of claim 1, wherein the link component drives the first restraining component to disengage from the first ratchet and drives the second restraining component to disengage from the second ratchet.

14. further comprising a first elastic component and a second elastic component; the first resilient component is biased to drive the first constraining component into engagement with the first ratchet; the second resilient component is biased to drive the second constraining component into engagement with the second ratchet; At the same time, the link component drives the first constraining component out of engagement with the first ratchet and the second resilient component drives the second constraining component into engagement with the second ratchet; 14. The automatic safety belt adjuster of claim 13, wherein simultaneously, the link component drives the second restraining component to disengage from the second ratchet and the first elastic component drives the first restraining component to engage the first ratchet.

15. A child safety seat comprising the automatic safety belt adjusting device according to any one of claims 1 to 14 and a safety belt.

16. A safety belt automatic adjustment device comprising: the automatic safety belt adjustment device according to any one of claims 10 to 12; a base; a safety belt; and a safety belt buckle connected to the safety belt; The child safety seat is characterized in that the safety belt buckle is buckled to the safety belt buckle fastening assembly.

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