Shoulder belt width adjustment mechanism and child safety seat

Abstract

To provide a shoulder belt width adjusting mechanism that adjusts the shoulder belt width synchronously in the process of adjusting the height of a headrest and can meet the needs for the shoulder belt width of children of different ages and different body types. [Solution] The present invention provides a shoulder belt width adjustment mechanism (40) comprising a rail device (44) and two shoulder belt fixing members (42), wherein the rail device (44) is provided on a seat backrest (22) and comprises a first rail and a second rail extending in a substantially vertical direction, provided on both sides of the seat backrest (22), the lateral distance between the first rail and the second rail gradually changes in the vertical direction, and the two shoulder belt fixing members (42) are connected to a seat headrest (30) and are located between the seat headrest (30) and the seat backrest (22), and can slide along the first rail and the second rail of the rail device (44), respectively.

Description

[Technical field]

[0001] The present invention relates to a shoulder belt width adjustment mechanism and a child safety seat for a vehicle, the child safety seat being provided with a shoulder belt width adjustment mechanism. [Background technology]

[0002] A child safety seat is a device designed for children of different weights or age groups, in which the child is strapped into the safety seat during the ride, which can reduce the impact force on the child and limit the movement of the child's body when the car collides or suddenly decelerates, thereby reducing the injuries to them and effectively improving the safety of the child's ride.

[0003] Currently, child safety seats on the market are often equipped with a headrest height adjustment function. For example, Patent Document CN21164126U proposes a headrest height adjustment mechanism including a backrest with multiple locking grooves, a headrest assembly movably mounted on the backrest, and an adjustment member, in which a position lock lever movably mounted in the position locking groove is mounted on the headrest assembly, the position lock lever can be locked in different position locking grooves to adjust the height of the headrest assembly relative to the backrest, the adjustment member is mounted on the headrest assembly and drives the locking lever, and an elastic member is provided between the adjustment member and the headrest assembly.

[0004] Patent document CN2101399U also discloses a headrest height adjustment device including a headrest, a seat backrest, a fastener, an adjustment member, and a reset member, one end of the fastener is a fastener end and the other end has a first inclined surface, the adjustment member has a second inclined surface and a first locking portion, one end of the adjustment member away from the second inclined surface is rotatably connected to the headrest, a reset member is connected between the adjustment member and the headrest, the second inclined surface and the first inclined surface abut and fit together, several second locking portions are provided in the height direction of the seat backrest, the adjustment member has a fixed position, and when the adjustment member is positioned at the fixed position, the first locking portion and the second locking portion engage with each other, and the headrest and the seat backrest are relatively fixed.

[0005] However, in the above-mentioned child safety seat, although the height of the headrest can be adjusted to meet the needs of children of different heights and body types, the width of the shoulder belt cannot be adjusted in the process of adjusting the height of the headrest. Generally, children of different heights and body types have different shoulder widths, so if the width of the shoulder belt is not adjusted according to the adjustment of the height of the headrest, the comfort of using the child safety seat will be reduced, and children will not want to ride in the child safety seat. Summary of the Invention The problem that the invention aims to solve

[0006] Therefore, an object of the present invention is to provide a shoulder belt width adjustment mechanism and a child safety seat in which the shoulder belt width is adjusted synchronously during the process of adjusting the headrest height, and which can meet the shoulder belt width requirements of children of different ages and different body types. [Means for solving the problem]

[0007] In response to this, the present invention provides a shoulder belt width adjustment mechanism comprising a rail device and two shoulder belt fixing members, wherein the rail device is provided on a seat backrest and comprises a first rail and a second rail extending approximately vertically on both sides of the seat backrest, the lateral distance between the first rail and the second rail gradually changes in the vertical direction, and the two shoulder belt fixing members are connected to a seat headrest and positioned between the seat headrest and the seat backrest and can slide along the first rail and the second rail of the rail device, respectively.

[0008] Preferably, each of the shoulder belt fixing members has a first end, a second end, and a shoulder belt receiving portion located between the first end and the second end, the first end being laterally slidably inserted into a hole corresponding to the seat headrest, and the second end being longitudinally connected to a corresponding rail so as to be longitudinally slidable.

[0009] Both the first rail and the second rail are long-groove shaped and have a constant cross-sectional shape, and a slider is provided at the second end of the shoulder belt fixing member, and the slider fits into the long groove.

[0010] Both the first rail and the second rail are rod-shaped and have a certain cross-sectional shape, and therefore a slide slot portion is provided at the second end of the shoulder belt fixing member, and the slide slot portion fits into the rod.

[0011] Each of the shoulder belt fixing members comprises a shoulder belt receiving portion and a first member and a second member which are elastically interconnectable, the first member being laterally slidably inserted into a hole corresponding to the seat headrest, the second member being vertically slidably connected to a corresponding rail, and the shoulder belt receiving portion being fixed to the second member.

[0012] Preferably, the first rail and the second rail are provided symmetrically with respect to a central axis of the seat backrest.

[0013] The present invention also provides a child safety seat for a vehicle, the child safety seat comprising a base, a seat case, a seat headrest and a shoulder belt width adjustment mechanism, the base is connected to a seat of the vehicle, the seat case comprises a seat backrest and a seat bottom, the seat bottom is connected to the base, the seat backrest is provided with two shoulder belt holes in the horizontal direction for a shoulder belt to pass through, the seat headrest is connected to an upper part of the seat backrest in a vertically slidable manner for positioning a child's head, and the shoulder belt width adjustment mechanism is attached to the seat backrest, whereby the horizontal distance between the shoulder belt holes changes in response to sliding of the seat headrest towards the seat backrest.

[0014] Preferably, the lateral distance between the two shoulder belt holes increases as the distance between the seat headrest and the seat bottom increases and decreases as the distance between the seat headrest and the seat bottom decreases.

[0015] The child safety seat of the present invention further comprises an engagement lever, which is used to position the seat headrest on the seat case.

[0016] According to the shoulder belt width adjustment mechanism and the child safety seat including the shoulder belt width adjustment mechanism of the present invention, it is possible to adjust the shoulder belt width synchronously at the same time as adjusting the headrest height, thereby solving the shoulder belt width requirements of children of different ages and body types, and greatly improving the comfort and safety of the child safety seat.

[0017] Those skilled in the art will appreciate that the drawings are primarily used for illustrative purposes and are not intended to limit the scope of the inventive subject matter described herein. The drawings are not necessarily drawn to scale, and in some cases, various aspects of the inventive subject matter disclosed herein may be exaggerated or enlarged in the drawings to allow for an understanding of different features. In the drawings, the same numerals typically refer to the same features (e.g., functionally similar elements and / or structurally similar elements). [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of a child safety seat according to the present invention; [Diagram 2] 3A-3C are schematic diagrams of different widths of shoulder belts when the headrest of the child safety seat is at different heights. [Diagram 3] 3A-3C are schematic diagrams of different widths of shoulder belts when the headrest of the child safety seat is at different heights. [Figure 4] 1 is a schematic diagram of a portion of a child safety seat according to the present invention; [Diagram 5] 3A and 3B are schematic diagrams illustrating the configuration of a shoulder belt width adjustment mechanism according to the present invention. [Figure 6] 3A and 3B are schematic diagrams illustrating the configuration of a shoulder belt width adjustment mechanism according to the present invention. [Figure 7] 3 is a schematic diagram of a shoulder belt fixing member according to the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The drawings and exemplary embodiments described below are not meant to limit the scope of the present embodiment to a single embodiment. The embodiment can be realized by replacing some or all of the described or illustrated elements. Furthermore, when some elements of the disclosed exemplary embodiment can be implemented in part or in whole using known elements, in some cases, only some of such known elements necessary for understanding the embodiment will be described, and detailed descriptions of other parts of these known elements will be omitted so as not to obscure the embodiment.

[0020] As shown in FIG. 1, this figure is a schematic diagram of a child safety seat 1 in the present invention, the child safety seat 1 mainly includes a base 10, a seat case 20, and a seat headrest 30, the base 10 can be connected and fixed to, for example, a car seat to fix the child safety seat 1. The seat case 20 constitutes the main structure of the child safety seat 1, and includes a seat backrest 22 and a seat bottom 24, the seat backrest 22 and the seat bottom 24 together constitute a child's riding space. The headrest 30 is connected to the seat backrest 22, and the head of a child using the child safety seat 1 can lean against the headrest 30, which can improve comfort. In addition, the headrest 30 can slide vertically along the seat backrest 22, and the vertical distance between the headrest 30 and the seat bottom 24 can be adjusted, which can meet the needs of children of different ages and different body types, and can improve the comfort of riding in the child safety seat 1. In addition, the child safety seat 1 of this embodiment is provided with two shoulder belt holes 220 on the left and right sides along the lateral direction of the seat backrest 22 in order to restrain the child safety seat 1, and the seat belt of the child safety seat can be drilled (passed through) the two shoulder belt holes. Preferably, the two shoulder belt holes 220 are distributed symmetrically with respect to the longitudinal center line of the seat backrest 22.

[0021] The child safety seat 1 of the present invention further includes a shoulder belt width adjustment mechanism 40 so that the lateral distance between the shoulder belt holes 220 can be changed accordingly while the headrest 30 slides vertically up and down along the seat backrest 22. For example, as shown in Figs. 2 and 3 of the present application, when the headrest 30 is in an upper position relative to the seat backrest 22 (as shown in Fig. 2), the lateral distance between the shoulder belt holes 220 is, for example, 70 mm, and in Fig. 3, when the headrest 30 slides downwards in the vertical direction of the seat backrest 22 to shorten the distance between the headrest 30 and the seat bottom 24, the lateral distance between the two shoulder belt holes 220 changes accordingly, for example, to 50 mm. In this way, the height of the headrest 30 can be adjusted as well as the shoulder belt width can be adjusted for children of different ages and body types to improve riding comfort and safety.

[0022] As shown in FIG. 4, the child safety seat 1 of the present invention further includes an engagement lever 50 for positioning the headrest 30 in the seat case 20, i.e., when the headrest 30 is slid vertically to an appropriate position, the engagement lever 50 fixes and positions the headrest 30 in the seat case 20.

[0023] Next, a specific configuration of the shoulder belt width adjustment mechanism 40 according to the present invention will be described in detail with reference to Figs. 5 to 7. Here, Figs. 5 and 6 are schematic diagrams of different configurations of the shoulder belt width adjustment mechanism according to the present invention, and Fig. 7 is a schematic diagram of a shoulder belt fixing member according to the present invention. The shoulder belt width adjustment mechanism 40 mainly includes a rail device 44 including a first rail 441 and a second rail 442 arranged on both sides of the seat backrest 22, and two shoulder belt fixing members 42. Preferably, the first rail 441 and the second rail 442 are distributed symmetrically with respect to the vertical center line of the seat backrest 22. The horizontal distance between the first rail 441 and the second rail 442 gradually increases in the direction away from the seat bottom 24.

[0024] 7 shows a specific configuration example of the shoulder belt fixing member 42, and will be described with reference to FIGS. 6 and 7. Each shoulder belt fixing member 42 includes a first end 421 and a second end 422 facing each other, and a shoulder belt receiving portion 423 located between the first end 421 and the second end 422, and the shoulder belt of the child safety seat can be fixedly connected to the shoulder belt receiving portion 423. Here, the first end 421 is inserted laterally into the hole 32 of the headrest 30, and the length of the first end 421 inserted into the hole 32 changes according to the sliding of the shoulder belt fixing member 42 in the vertical direction. For example, in the process of sliding the shoulder belt fixing member 42 away from the seat bottom 24 in the vertical direction, the length of the first end 421 inserted into the hole 32 gradually decreases, and conversely, in the process of sliding the shoulder belt fixing member 42 toward the seat bottom 24 in the vertical direction, the length of the first end 421 inserted into the hole 32 gradually increases. The second end 422 of the shoulder belt fixing member 42 is connected to the rail so as to be slidable vertically. For example, in FIG. 6 , the second end 422 of the shoulder belt fixing member 42 provided on the left side of the seat backrest 22 is slidably provided on the first rail 441, and the second end 422 of the shoulder belt fixing member provided on the right side of the seat backrest 22 is slidably provided on the second rail 442. In addition, the two first ends 421 of the two shoulder belt fixing members 42 on both the left and right sides are both inserted into the two holes 32 of the headrest 30, so that when the headrest 30 slides up and down vertically, the first ends of the shoulder belt fixing members 42 are inserted into the holes 32 of the headrest 30, and can slide together with the headrest; on the other hand, the second ends 422 of the shoulder belt fixing members 42 can slide along the first rail 441 and the second rail 442, and the lateral distance between the first rail 441 and the second rail 442 gradually increases in the direction away from the seat bottom 24, so that the lateral distance between the two shoulder belt fixing members 42 also gradually increases in the direction away from the seat bottom 24 and gradually decreases in the direction towards the seat bottom 24.

[0025] As a modification of the shoulder belt fixing member 42, the shoulder belt fixing member 42 may have an expandable structure so that, for example, its lateral length increases in the process of sliding upward, and its lateral length decreases in the process of sliding downward. For example, the shoulder belt fixing member 42 in this embodiment includes a shoulder belt receiving portion 423 for fixing the shoulder belt, and a first member and a second member which can be connected to each other in an expandable manner, and the first member is inserted in a hole 32 corresponding to the seat headrest so as to be slidable in the lateral direction, and the second member is inserted in a hole 32 corresponding to the seat headrest so as to be slidable in the lateral direction. Second member is connected to the corresponding rail so as to be vertically slidable, and the shoulder belt housing 423 is fixed to the second member. As a result, as the shoulder belt fixing member slides up and down in the vertical direction, a relative expansion and contraction movement occurs between the first member and the second member, so that the lateral distance between the two shoulder belt fixing members can be gradually changed as it moves vertically.

[0026] According to one embodiment of the present invention, for example, the first rail 441 and the second rail 442 are both long-groove shaped, and the long-groove shaped rail has a certain cross-sectional shape, and accordingly, a slider 4221 is provided on the second end 422 of the shoulder belt fixing member 42, and the slider 4221 can be fitted into the long groove and slid.

[0027] According to another embodiment of the present invention, for example, the first rail 441 and the second rail 442 are both rod-shaped, and the rod-shaped rails have a certain cross-sectional shape, and therefore, the second end 422 of the shoulder belt fixing member 42 is provided with a slide slot portion that can slide by fitting into the rod.

[0028] According to the shoulder belt width adjustment mechanism 40 and the child safety seat 1 including the shoulder belt width adjustment mechanism 40 of the present invention, it is possible to adjust the height of the headrest 30 and simultaneously adjust the shoulder belt width, thereby satisfying the requirements for shoulder belt width of children of different ages and body types, and greatly improving the comfort and safety of the child safety seat 1.

[0029] The present specification describes various features in terms of preferred and exemplary embodiments thereof, and those skilled in the art will be able to devise many other embodiments, modifications, and variations that fall within the scope and spirit of the appended claims upon reading the specification. [Explanation of symbols]

[0030] 1. Child safety seat 10 Pedestal 20 Seat Case 22 Seat backrest 220 Shoulder belt hole 24 Seat bottom 30 Seat headrest 32 holes 40 Shoulder belt width adjustment mechanism 44 Rail device 441 First Rail 442 Second Rail 42 Shoulder belt fixing member 421 First Edge 422 Second End 423 Shoulder belt storage area 4221 Slider 50 Engagement lever

Claims

1. A shoulder belt width adjustment mechanism (40) comprising a rail device (44) and two shoulder belt fixing members (42), The rail device (44) is provided on the seat backrest (22) and includes a first rail (441) and a second rail (442) that are provided on both sides of the seat backrest (22) and extend in a substantially vertical direction, and a lateral distance between the first rail (441) and the second rail (442) gradually changes in the vertical direction; the two shoulder belt fixing members (42) are connected to a seat headrest (30), are located between the seat headrest (30) and the seat backrest (22), and can slide vertically along a first rail (441) and a second rail (442) of the rail device (44), respectively; Each of the shoulder belt fixing members (42) has a first end (421), a second end (422), and a shoulder belt receiving portion (423) located between the first end and the second end, The shoulder belt receiving portion (423) is laterally slidable into a corresponding hole (32) in the seat headrest; A shoulder belt can be fixedly connected to the shoulder belt receiving portion (423), the first end (421) is laterally slidably inserted into the corresponding hole (32) of the seat headrest, and the direction in which the first end (421) is inserted into the hole (32) is the same as the lateral direction; and the second end (422) is connected to a corresponding one of the first and second rails so as to be vertically slidable; The length of the first end (421) inserted into the hole (32) is changed by sliding in the lateral direction; In the process of sliding the seat headrest (30) in the vertical direction, the shoulder belt storage portion (423) slides in the horizontal direction, and the shoulder belt width is synchronously adjusted. A shoulder belt width adjustment mechanism.

2. The first rail and the second rail are both long-groove shaped and have a constant cross-sectional shape, and a slider (4221) is provided at the second end (422) of the shoulder belt fixing member (42), and the slider (4221) fits into the long groove.

2. The shoulder belt width adjustment mechanism according to claim 1 .

3. The first rail and the second rail are both rod-shaped and have a certain cross-sectional shape, and a slide slot portion is provided at the second end (422) of the shoulder belt fixing member (42), and the slide slot portion fits into the rod.

2. The shoulder belt width adjustment mechanism according to claim 1 .

4. Each of the shoulder belt fixing members (42) comprises the shoulder belt receiving portion (423), a first member and a second member, the first member and the second member are interconnected in a telescopic manner, the first member is laterally slidably inserted into a corresponding hole (32) of the seat headrest, the second member is vertically slidably connected to a corresponding rail, and the shoulder belt receiving portion is fixed to the second member.

2. The shoulder belt width adjustment mechanism according to claim 1 .

5. The first rail (441) and the second rail (442) are provided symmetrically with respect to the central axis of the seat backrest (22).

2. The shoulder belt width adjustment mechanism according to claim 1 .

6. A child safety seat (1) for a vehicle, comprising a base (10), a seat case (20), a seat headrest (30), and the shoulder belt width adjustment mechanism (40) according to any one of claims 1 to 5, The seat case (20) includes a seat backrest (22) and a seat bottom (24), the seat bottom (24) is connected to the base (10), and the seat backrest (22) is provided with two shoulder belt holes (220) in the lateral direction for a shoulder belt to pass through. The seat headrest (30) is connected to an upper portion of the seat backrest (22) so as to be vertically slidable; The shoulder belt width adjustment mechanism (40) is attached to the seat backrest (22), and the width of the shoulder belt fixedly connected to the two shoulder belt holes (220) changes according to the sliding of the seat headrest (30) toward the seat backrest (22). A child safety seat characterized by the above.

7. the width of the shoulder belt increases as the distance between the seat headrest (30) and the seat bottom (24) increases and decreases as the distance between the seat headrest (30) and the seat bottom (24) decreases; 7. A child safety seat according to claim 6.

8. The seat further includes an engagement lever (50), the engagement lever (50) being used to position the seat headrest (30) in the seat case (20).

7. A child safety seat according to claim 6.

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