GB2555914A

GB2555914A - Child safety seat and a width-adjustable side bolster mechanism thereof

Info

Publication number: GB2555914A
Application number: GB1713396.8A
Authority: GB
Inventors: Guo Zheng-Wen; Cui Zong-Wang
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2016-09-06
Filing date: 2017-08-21
Publication date: 2018-05-16
Anticipated expiration: 2037-08-21
Also published as: GB201713396D0; JP2021120273A; DE102017119698B4; GB202117794D0; JP2022186976A; DE202017007271U1; JP7168723B2; JP6892356B2; DE102017119698A1; CN107791905A; GB2598264B; GB2598264A; DE102017012331B3; DE202017007417U1; GB2593329A; JP2018039500A; CN107791905B; GB2555914B; GB2593329B; DE102017012376B4

Abstract

A width-adjustable side bolster mechanism (60, figure 1) of a child safety seat (1) includes a guideway 62 disposed in a side bolster (50). A driving member 61 is securely disposed on a headrest (40). A guide stem 612 is slidably engaged in the guideway 62 to be moved along the guideway 62 to vary the width between the side bolsters (50). A resilient structure 63 is disposed between the side bolster (50) and a main body of the child safety seat (1) and provides a biasing force which keeps a contour of the guideway (62). Once subjected to a side force larger than the biasing force, the side bolster (50) is displaced to adjust the width. The guideway 62 is effectively a spring-loaded variable-width guideway.

Description

(71) Applicant(s):

Wonderland Switzerland AG

Beim Bahnhof 5, Steinhausen 6312, Switzerland (51) INT CL:

B60N2/28 (2006.01) (56) Documents Cited:

EP 1621395 A CN 206383850 U CN 202623983 U US 20080169692 A (58) Field of Search:

INT CL B60N Other: WPI, EPODOC

B60N 2/02 (2006.01)

WO 2000/040433 A CN 203995787 U CN 202439584 U (72) Inventor(s):

Zheng-Wen Guo Zong-Wang Cui (74) Agent and/or Address for Service:

Marks & Clerk LLP

62/68 Hills Road, CAMBRIDGE, CB2 1LA, United Kingdom (54) Title of the Invention: Child safety seat and a width-adjustable side bolster mechanism thereof Abstract Title: Child safety seat and a width-adjustable side bolster mechanism thereof (57) A width-adjustable side bolster mechanism (60, figure 1) of a child safety seat (1) includes a guideway 62 disposed in a side bolster (50). A driving member 61 is securely disposed on a headrest (40). A guide stem 612 is slidably engaged in the guideway 62 to be moved along the guideway 62 to vary the width between the side bolsters (50). A resilient structure 63 is disposed between the side bolster (50) and a main body of the child safety seat (1) and provides a biasing force which keeps a contour of the guideway (62). Once subjected to a side force larger than the biasing force, the side bolster (50) is displaced to adjust the width. The guideway 62 is effectively a spring-loaded variable-width guideway.

63<

632

631

621

FIG.7 /15

— 30

FIG.l

2/15

FIG.2

3/15

FIG.3

4/15

FIG.4

5/15

FIG.5

6/15

FIG.6

7/15

FIG.7

8/15

6313

6312

FIG.8

9/15

FIG.9

10/15

631

FIG. 10

11/15

FIG. 11

12/15

FIG.12

13/15

FIG. 13

14/

A⁵

CHILD SAFETY SEAT AND A WIDTH-ADJUSTABLE

SIDE BOLSTER MECHANISM THEREOF

The disclosure relates to a child safety seat, and more particularly to a child safety seat having a width-adjustable side bolster mechanism.

With the widespread use of child carriers, child carriers are demanded to provide more functions. A child carrier should be operated and used conveniently in addition to providing safety and comfort to a child carried thereon.

Child safety seats or car seats are well known for placement on a vehicle to protect children from injury or death during car collisions. A car seat generally includes a seat bottom, a backrest connected to the seat bottom, and a headrest and side bolsters connected to the backrest. The headrest and the side bolsters are adjustable relative to the backrest to accommodate children of different heights. In a conventional child safety seat, height-adjustment of the headrest relative to the backrest can generate pivoting movement of the side bolsters so as to adjust the width between the side bolsters. However, the drawback of such child safety seat is that, when placing several child safety seats on a backseat of a vehicle, the side bolsters of the juxtaposed safety seats are interfered with each other, or with the car door. As such, adjustment of the headrest is required to change the width between the side bolsters, which is inconvenient in use.

Therefore, an object of the disclosure is to provide a width-adjustable side bolster mechanism and a child safety seat having the same, that can alleviate at least one of the drawbacks of the prior art.

According to the disclosure, the width-adjustable side bolster mechanism of a child safety seat is for adjusting a width between side bolsters of the child safety seat. The width-adjustable side bolster mechanism includes a guideway disposed in one of the side bolsters, a driving member securedly disposed on a headrest of the child safety seat, and having a guide stem which is slidably engaged in the guideway to be moved along the guideway between a lower position, where the width between the side bolsters is smaller, and an upper position, where the width between the side bolsters is larger, and a resilient structure disposed between the side bolster and a main body of the child safety seat, and providing a biasing force which keeps a contour of the guideway when the guide stem is moved between the upper and lower positions, and which is overcome when a side force larger than the biasing force is applied to the side bolster to permit displacement of the side bolster so as to adjust the width between the bolsters .

According to the disclosure, the child safety seat includes a seat bottom, a backrest connected to the seat bottom, a headrest slidably connected to the backrest, and two side bolsters respectively disposed on two lateral sides of the backrest. The child safety seat further includes a widthadjustable side bolster mechanism as described hereinbefore .

Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which:

FIG. 1 is a perspective view illustrating an embodiment of a child safety seat according to the disclosure;

FIG. 2 is a perspective view illustrating the embodiment when a headrest and side bolsters of the child safety seat are in a first state;

FIG. 3 is a perspective view illustrating the embodiment when the headrest and the side bolsters are in a second state;

FIG. 4 is a front perspective view of FIG. 2;

FIG. 5 is a rear perspective view of FIG. 2;

FIG. 6 is a perspective view of the embodiment shown in FIG. 5, a rear shell and a side shell thereof being removed for the sake of clarity;

FIG. 7 is an enlarged view of an encircled portion (A) in FIG. 6;

FIG. 8 is an exploded perspective view of a side 5 bolster of FIG. 6;

FIG. 9 is a schematic view illustrating a state when the side bolsters of the child safety seat is not subjected to a side force;

FIG. 10 is a schematic view illustrating a state 10 when the side bolsters of FIG. 9 is subjected to a side force;

FIG. 11 is a perspective view illustrating another embodiment of a child safety seat according to the disclosure;

FIG. 12 is a fragmentary perspective view of a driving member in FIG. 11; and

FIGS. 13 to 15 are perspective views similar to FIG. 11 but taken from other angles.

Before the disclosure is described in greater 20 detail, it should be noted that where considered appropriate, reference numerals or terminal portions of reference numerals have been repeated among the figures to indicate corresponding or analogous elements, which may optionally have similar characteristics.

Referring to FIGS. 1 to 5, an embodiment of a child safety seat according to the disclosure includes a base 10, a seat bottom 20 fastened onto the base 10, a backrest 30 connected to a rear end of the seat bottom 20, a headrest 40 slidably connected to an upper end of the backrest 30, and two side bolsters 50 respectively disposed on two lateral sides of the backrest 30.

Further, the headrest 40 has an operating portion 41 (see FIG. 5) which is operable to adjust a height of the headrest 40 relative to the backrest 30.

With reference to FIG. 6, the child safety seat 1 further includes a width-adjustable side bolster mechanism 60 disposed between the headrest 40 and one of the side bolsters 50. During the height adjustment of the headrest 40, the side bolsters 50 can be pivoted synchronously through the widthadjustable side bolster mechanism 60 to adjust the width between the side bolsters 50 to accommodate children of different heights in a convenient manner. On the other hand, when the side bolsters 50 in a wider state are subjected to a side force of an object, the side bolsters 50 can be turned toward each other to change the width therebetween without the need to adjust the height of the headrest 40 to thereby diminish the interference with the object.

Referring again to FIG. 6, in this embodiment, each of the side bolsters 50 has a lower end pivotably connected to the backrest 30 so as to be pivoted with the height adjustment of the headrest 40, and an upper end slidably connected to the backrest 30 by virtue of a slidably connecting mechanism 70 so as to provide a displacement space for the side bolster 50 when subjected to a side force .

Specifically, the slidably connecting mechanism includes a guiding slot 71 and a guiding member 72 slidably engaged in the guiding slot 71. The guiding slot 71 is formed in one of the backrest 30 and the side bolster 50, while the guiding member 72 is fixed on the other one of the backrest 30 and the side bolster 50. In this embodiment, the guiding slot 71 is formed in an upper end of the side bolster 50, and the guiding member 72 is fixed on the backrest 30 and extends through the guiding slot to permit sliding movement of the side bolster 50 relative to the guiding member 72.

Referring to FIGS. 9 and 10, a rib 31 is disposed on the backrest 30 to restrain the movement of the side bolster 50 when the side bolster 50 is subjected to a side force.

As shown in FIGS. 4 to 10, the construction of the width-adjustable side bolster mechanism 60 of the child safety seat 1 is described in detail in the following.

With reference to FIGS. 4, 6 and 7, the width7 adjustable side bolster mechanism 60 includes a driving member 61 and a guideway 62. The guideway 62 is disposed in the side bolster 50, and has a first section 621 and a second section 622 inclined relative to the first section 621 and second sections 621, 622

Both the first extend in the height-adj usting relative to the directions that intersect a direction of the headrest 40 backrest 30 (see FIG. 7) . The driving member 61 is securedly disposed on the headrest 40, and is slidable fitted in the guideway 62. The guideway 62 has a resilient structure disposed thereon. During the height adjustment of the headrest 40, the width between the side bolsters 50 can be adjusted through the interaction of the driving member 61 and the guideway 62 to pivot the side bolsters 50. When the side bolster 50 is subjected to a side force, the resilient structure on the guideway 62 is deformed to generate a tension that permits an inwardly pivoting movement of the side bolster 50 to thereby adjust the width between the side bolsters 50 without having to adjust the height of the headrest .

As shown in FIG. 4, the driving member 61 has a driving shaft 611 securedly disposed on the headrest 40, and a guide stem 612 fixed to an end portion of the driving shaft 611. The guide stem 612 is slidably engaged in the guideway 62 such that, when the headrest 40 is moved in an upright direction for the height adjustment, the driving shaft 611 is moved therewith and the guide stem 612 is moved along the guideway 62 between a lower position, where the width between the side bolsters 50 is smaller, and an upper position, where the width between the side bolsters 50 is larger so as to perform a width adjustment of the side bolsters 50.

In this embodiment, the backrest 30 has a sliding slot 32 extending in the upright direction. The guide stem 612 is slidably extended through the sliding slot 32 so as to guide the movement of the guide stem 612.

With reference to FIGS. 6 to 8, the side bolster 50 has a flange 51 and an elongated slot 62' formed at a side of the flange 51 (see FIG. 8) . A biasing confining assembly 63 is pivotably disposed between the elongated slot 62' and the flange 51 to be moved between a first position remote from the flange 51, and a second position close to the flange 51. The biasing confining assembly 63 extends to an upper end of the elongated slot 62' when in the first position such that the biasing confining assembly 63 confines a border side wall of the guideway 62 (see FIG. 7). The elongated slot 62' has a side wall 620' which is remote from the flange 51 to confine another border side wall of the guideway 62 . The guide stem 612 is slidably fitted in the guideway 62. In this state, the guide stem 612, when sliding upwardly, can act upon the biasing confining assembly 63 to actuate pivoting movement of the side bolster 50. The biasing confining assembly 63 is held in the first position during the upward sliding of the guide stem 612 so as to keep the contour of the guideway 62. The guide stem 612, when sliding downwardly, can act upon the side wall 620' of the elongated slot 62' (i.e. said another border side wall of the guideway 62) to actuate pivoting movement of the side bolster 50 in an opposite direction .

When the side bolster 50 is subjected to a side force, the guide stem 612 is actuated to deform the biasing confining assembly 63 such that the biasing confining assembly 63 is moved from the first position to the second position to generate a tension that permits an inwardly pivoting movement of the side bolster 50 to thereby adjust the width between the side bolsters 50 without having to adjust the height of the headrest 40.

As shown in FIGS. 7 and 8, an abutted member 52 is disposed on the side bolster 50, and extends upwardly from an upper end wall of the elongated slot 62' such that the biasing confining assembly

0

63, when in the first position, abuts against the abutted member 52 by means of a biasing force so as to keep the contour of the guideway 62 confined by the biasing confining assembly 63 and the elongated slot 62' (see FIG. 7) when the guide stem 612 is moved between the upper and lower positions.

Referring to FIG. 8, the elongated slot 62' includes a sector-shaped upper section 621' and a strip-shaped lower section 622. The width of the upper section 621' gradually increases from a lower end to an upper end, and is larger than that of the lower section 622. Hence, when subjected to a side force that is larger than the biasing force, the side bolster 50 is moved relative to the backrest

30, and the configuration of the upper section 621' can provide space for the movement of the guide stem

612 .

With reference to FIGS. 7 to 9, the biasing confining assembly 63 serves as the resilient structure, and includes a confining member 631 pivotably disposed to the side bolster 50 at a lower pivot end thereof that is adjacent to a lateral side of the elongated slot 62' and adjacent to the lower section 622, and a biasing member 632 abutting against the confining member 631 and the flange 51 to bias the confining member 631 toward the first position. In this embodiment, the biasing member 632

1 is a biasing spring abutting against an upper biased end of the confining member 631 that is opposite to the lower pivot end, and against the flange 51 to provide the biasing force to permit the upper biased end of the confining member 631 to abut against the abutted member 52. Hence, the confining member 631 cooperates with the side wall 620' of the elongated slot 62' to define the guideway 62 for sliding of the guide stem 612. The guide stem 612 can actuate the pivoting movement of the side bolster 50 by the interaction of the guide stem 612 and the guideway .

The biasing member 632 may also be of a torsion spring which is disposed at the lower pivot end of the confining member 631.

Referring to FIGS. 7 to 9, the confining member 631 extends in the upper section 621', and has at an upper pivot end a holding portion 6311 which defines an accommodation space for holding the biasing member 632 therein, and an abutting portion 6312 which projects to abut against the abutted member 52 facing the biasing member 632 so as to retain the confining member 631 in the first position.

Further, the confining member 631 has a frictionally engaging portion 6313 at an upper edge thereof. A stabilizing member 53 is disposed on the side bolster 50 such that the frictionally engaging

2 portion 6313 is frictionally and slidably engaged with the stabilizing member 53 so as to stabilize the pivoting movement of the confining member 631.

With reference to FIGS. 1 to 10, details of different states of the child safety seat 1 are now described.

FIG. 2 illustrates the headrest 40 and the side bolsters 50 of the child safety seat 1 in a first state, where the headrest 40 is in a lower position, and the width between the side bolsters 50 is relatively small.

During the upper sliding movement of the headrest 40, the guide stem 612 is moved along the sliding slot 32 of the backrest 30, as shown in FIGS. 3 and 4. Through the interaction of the moved guide stem 612 with the side wall of the guideway 62 (i.e., the biasing force of the biasing member 632 acts upon the confining member 631 to make a constant abutment of the confining member 631 against the abutted member 52 to keep the contour of the guideway 62, as shown in FIGS. 6 and 7), the side bolsters 50 can be pivoted outwardly so as to increase the width between the side bolsters 50. Upon completion of the adjustment, the headrest 40 is in an upper position, and the width between the side bolsters 50 is relatively large. As shown in FIGS. 3 and 9, the guide stem 612 is held in this position by the

3 biasing force of the biasing member 632. On the other hand, the biasing force of the biasing member 632 can be overcome by a side force applied to the side bolster 50. A detailed description is as follows .

When the side bolsters 50 of the child safety seat 1 in the wider state as shown in FIG. 9 are subjected to a side force by interfering with a side bolster of another child safety seat or a car door, the side bolster 50 is moved relative to the backrest 30 to the state as shown in FIG. 10. During this movement, the confining member 631 is turned relative to the elongated slot 62' from the first position to the second position, where the biasing member 632 is depressed (deformed) to generate a tension that results in an inwardly pivoting movement of the side bolster 50 to thereby reduce the width between the side bolsters 50 until the confining member 631 abuts against the flange 51, as shown in FIG. 10. Thus, the width adjustment of the side bolsters 50 can be performed without having to adjust the height of the headrest 40. When the side force is not applied to the side bolster 50, the biasing member 632 is recovered to its original state, which generates a tension that permits an outwardly pivoting movement of the side bolster 50 to the wider state.

4

In a modified embodiment, the biasing force of the biasing member 632 acted upon the confining member 631 is not sufficient to keep the contour of the guideway 62 during the upward sliding movement of the guide stem 612 to a leading part of the upper section 621' of the elongated slot 62' . The confining member 631 is displaced to vary the contour of the guideway 62 in this case so as to accommodate variation of the width of the side bolsters 50 when an external force is laterally and inwardly applied to the side bolster 50. In this embodiment, when the guide stem 612 continues to slide upwardly along the sliding slot 32 to a trailing part of the upper section 621', the biasing force of the biasing member 632 acted upon the confining member 631 is sufficient to permit abutment of the confining member 631 against the abutted member 52. Namely, the contour of the guideway 62 is restored so as to actuate the outwardly pivoting movement of the side bolster 50.

When the height of the headrest 40 is adjusted from the state of FIG. 3 to the state of FIG. 2, the guide stem 612 acts upon the side wall 620' of the elongated slot 62' such that a horizontal component of a force of the guide stem 612 acted upon the side wall 620' can actuate an inwardly pivoting movement of the side bolsters 50 so as to reduce the width

5 therebetween .

With reference to FIGS. 11 to 15, another embodiment of the child safety seat of the disclosure is now described.

Referring to FIGS. 11 to 13, the width-adjustable side bolster mechanism 60 includes the driving member 61' securely connected to the headrest 40, and a guideway 62 disposed in the side bolster 50 to be in slidable engagement of the driving member 61'. The guideway 62 has a first section 621 and a second section 622. Both the first and second sections 621, 622 are strip-shaped, and extend in the directions that intersect a height-adjusting direction of the headrest 40. Hence, during the height adjustment of the headrest 40, the width between the side bolsters 50 can be adjusted through the interaction of the driving member 61' and the guideway 62 to pivot the side bolsters 50.

In this embodiment, the driving member 61' is configured to be depressed (deformed) when the side bolster 50 is subjected to a side force so as to generate a tension that permits an inwardly pivoting movement of the side bolster 50 to thereby adjust the width between the side bolsters 50 without having to adjust the height of the headrest 40. When the side force is not applied to the side bolster 50, the depressed driving member 61' is recovered to

6 its original state, which generates a tension that permits an outwardly pivoting movement of the side bolster 50 to a wider state.

With reference to FIG. 12, in this embodiment, the driving member 61' has a fixed end 6111' fixed to the headrest 40, and a biasing arm 611' extending from the fixed end 6111' to serve as the resilient structure and to terminate at an opposite connected end 6112' on which the guide stem 612 is disposed. The biasing arm 611' has a biasing portion 6113' interconnecting the fixed end 6111' and the connected end 6112', and inclined laterally and outwardly. When the driving member 61' is subjected to a side force that is larger than the biasing force of the biasing arm 611', the biasing portion 6113' is inflected to generate a tension that permits an inwardly pivoting movement of the side bolster 50.

In this embodiment, the biasing arm 611' is in form of a torsion spring made from steel or an iron wire .

With reference to FIG. 14, the slidably connecting mechanism 70 of this embodiment includes a guiding slot 71 formed in the backrest 30, and a guiding member 72 fixed to the side bolster 50 and slidably engaged in the guiding slot 71 so as to restrain the displacement of the side bolster 50.

7

Alternatively, the guiding slot 71 may be formed in the side bolster 50 while the guiding member 72 is fixed to the backrest 30 to be slidably engaged in the guiding slot 71.

With the width-adjustable side bolster mechanism 60 including the guideway 62 that is disposed in the side bolster 50, the driving member 61, 61' that is disposed on the headrest 40 to be slidably engaged in the guideway 62, and a resilient structure that is disposed to either the driving member 61, 61' or the guideway 62, the width between the side bolsters 50 can be adjusted through the slidable engagement of the driving member 61, 61' with the guideway 62 during the height adjustment of the headrest 40. Moreover, when a side force larger than the biasing force of the resilient structure is applied to the side bolster 50, the width between the side bolsters 50 can be resiliently and conveniently adjusted without having to adjust the height of the headrest 40, which renders the child safety seat 1 simple in use .

8

Claims

CLAIMS :

1. A width-adjustable side bolster mechanism of a child safety seat for adjusting a width between side bolsters of the child safety seat, characterized by comprising:

a guideway disposed in one of the side bolsters;

a driving member securedly disposed on a headrest of the child safety seat, and having a guide stem which is slidably engaged in said guideway to be moved along said guideway between a lower position, where the width between the side bolsters is smaller, and an upper position, where the width between the side bolsters is larger; and a resilient structure disposed between the side bolster and a main body of the child safety seat and providing a biasing force which keeps a contour of said guideway when said guide stem is moved between the upper and lower positions, and which is overcome when a side force larger than the biasing force is applied to the side bolster to permit displacement of the side bolster so as to adjust the width between the bolsters.

2. The width-adjustable side bolster mechanism as claimed in Claim 1, characterized in that said guideway extends in a direction that intersects a

1 9 height-adjusting direction of the headrest relative to the main body of the child safety seat.

3. The width-adjustable side bolster mechanism as claimed in Claim 1, characterized in that said driving member has a fixed end fixed to the headrest, and a biasing arm extending from said fixed end to serve as said resilient structure and to terminate at an opposite connected end on which said guide stem is disposed such that, when said driving member is subjected to the side force, said driving member is deformed to permit a pivoting movement of the side bolster.

4. The width-adjustable side bolster mechanism as claimed in Claim 3, characterized in that said biasing arm has a biasing portion interconnecting said fixed end and said connected end and inclined laterally and outwardly so as to be inflected when said driving member is subjected to the side force.

5. The width-adjustable side bolster mechanism as claimed in Claim 4, characterized in that said biasing arm is in form of a torsion spring.

6. The width-adjustable side bolster mechanism as claimed in Claim 1, characterized by a biasing confining assembly which is disposed on the side bolster to confine a border side wall of said

2 0 guideway and which is configured to serve as said resilient structure such that, when the side bolster is subjected to the side force, said biasing confining assembly is deformed to permit a pivoting movement of the side bolster.

7. The width-adjustable side bolster mechanism as claimed in Claim 6, characterized by an elongated slot which is formed in the side bolster, said biasing confining assembly being pivotably

disposed adj acent to a lateral side o f said elongated slot to be turned relative to said elongated slot by the side force from a first

position, where said biasing confining assembly confines the border side wall of said guideway, to a second position, where said biasing confining assembly is deformed to change the contour of said guideway.

8. The width-adjustable side bolster mechanism as claimed in Claim 7, characterized in that said elongated slot has upper and lower sections, said upper section having a width larger than that of said lower section, said biasing confining assembly being pivotably disposed adjacent to said lower section and extending in said upper section to confine the border side wall of said guideway .

9. The width-adjustable side bolster mechanism as

2 1 claimed in Claim 7, characterized in that said biasing confining assembly includes a confining member pivotably disposed to the side bolster at a pivot end thereof, and a biasing member disposed between said confining member and the side bolster to bias said confining member toward the first position.

10. The width-adjustable side bolster mechanism as claimed in Claim 9, characterized in that said biasing member abuts against a biased end of said confining member that is opposite to said pivot end, and against the side bolster, said confining member having a holding portion which defines an accommodation space for holding said biasing member therein.

11. The width-adjustable side bolster mechanism as claimed in Claim 9, characterized in that said biasing confining assembly further includes an abutted member which is disposed on the side bolster and which faces said biasing member, said confining member having an abutting portion which projects to abut against said abutted member so as to retain said confining member in the first position .

12. The width-adjustable side bolster mechanism as claimed in Claim 9, characterized in that said biasing confining assembly further includes a

2 2 stabilizing member which is disposed on the side bolster, said confining member having a frictionally engaging portion which is frictionally and slidably engaged with said stabilizing member so as to stabilize the turning of said confining member.

13. The width-adjustable side bolster mechanism as claimed in Claim 6, characterized in that said driving member has a driving shaft which is securedly disposed on the headrest, said guide stem being fixed to an end portion of said driving shaft to be moved along said guideway along with a height adjustment of the headrest.

14. A child safety seat comprising a seat bottom, a backrest connected to said seat bottom, a headrest slidably connected to said backrest, and two side bolsters respectively disposed on two lateral sides of said backrest, characterized by further comprising a width-adjustable side bolster mechanism as claimed in any one of Claims

1 to 13.

15. The child safety seat as claimed in Claim 14, characterized in that each of said side bolsters has an upper end slidably connected to said backrest, and a lower end pivotably connected to said backrest.

16. The child safety seat as claimed in Claim 15,

2 3 characterized m that one of said backrest and said side bolster has a guiding slot, and the other one of said backrest and said side bolster has a guiding member which is slidably engaged in

5 said guiding slot.

17.The child safety characterized in operating portion height of said

10 backrest.

seat as claimed in Claim 14, that said headrest has an which is operable to adjust a headrest relative to said

Intellectual

Property

Office

Application No: