GB2505993A - Shoulder belt height adjustment mechanism for child seat - Google Patents

Shoulder belt height adjustment mechanism for child seat Download PDF

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Publication number
GB2505993A
GB2505993A GB1312418.5A GB201312418A GB2505993A GB 2505993 A GB2505993 A GB 2505993A GB 201312418 A GB201312418 A GB 201312418A GB 2505993 A GB2505993 A GB 2505993A
Authority
GB
United Kingdom
Prior art keywords
backrest
slide member
locking
handle body
locking device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1312418.5A
Other versions
GB2505993B (en
GB201312418D0 (en
Inventor
Zhi-Ren Zhong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wonderland Nurserygoods Co Ltd Hong Kong
Original Assignee
Wonderland Nurserygoods Co Ltd Hong Kong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wonderland Nurserygoods Co Ltd Hong Kong filed Critical Wonderland Nurserygoods Co Ltd Hong Kong
Publication of GB201312418D0 publication Critical patent/GB201312418D0/en
Publication of GB2505993A publication Critical patent/GB2505993A/en
Application granted granted Critical
Publication of GB2505993B publication Critical patent/GB2505993B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
    • A47D15/00—Accessories for children's furniture, e.g. safety belts
    • A47D15/005—Restraining devices, e.g. safety belts, contoured cushions or side bumpers
    • A47D15/006—Restraining devices, e.g. safety belts, contoured cushions or side bumpers in chairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2803—Adaptations for seat belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2803—Adaptations for seat belts
    • B60N2/2812—Adaptations for seat belts for securing the child to the child seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
    • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
    • B60N2/2803—Adaptations for seat belts
    • B60N2/2818—Adaptations for seat belts characterised by guiding means for children belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/18—Anchoring devices
    • B60R22/20—Anchoring devices adjustable in position, e.g. in height
    • B60R22/201—Anchoring devices adjustable in position, e.g. in height with the belt anchor connected to a slider movable in a vehicle-mounted track
    • B60R22/202—Anchoring devices adjustable in position, e.g. in height with the belt anchor connected to a slider movable in a vehicle-mounted track the slider comprising spring-actuated locking means
    • B60R22/203—Anchoring devices adjustable in position, e.g. in height with the belt anchor connected to a slider movable in a vehicle-mounted track the slider comprising spring-actuated locking means the locking means being movably mounted on the slider
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/10—Safety belts or body harnesses in vehicles specially adapted for children or animals
    • B60R22/105—Safety belts or body harnesses in vehicles specially adapted for children or animals for children

Abstract

A shoulder belt height adjustment mechanism for a child seat includes a slide member 2 mounted slidably to a backrest 1 of the child seat, and a locking device 3 mounted to slide member 2 for locking two plate bodies 21 of slide member 2. A shoulder belt is secured to each slide member 2 at a desired height. Locking device 3 includes opposite locking rods 31 operable between an unlocked position and a locked position where a hook end portion 311 of each locking rod 31 releasably engages a corresponding positioning hole 131 in bracket 1 using an actuating block 32, for example by urging abutting inclined faces 3211 of actuating block 32 and 312 of locking rods 31. Coil springs 33 may be provided between hook end portions 31 and ends 221 of a handle portion 22 of slide member 2.

Description

SHOULDER BELT HEIGHT ADJUSTMENT MECHANISM, AND BACKREST
DEVICE FOR A CHILD SEAT HAVING THE SANE
The invention relates to an adjnstment meohanism for a child seat, and more particularly to a shoulder belt height adjustment mechanism, and a backrest device for a child seat having the same.
Special child seats, fcr example, high chairs and carseats, whichprovideprotectionfor infants andsnall children, are well known.
A conventional child seat generally inclildes a seat support, a backrest, and right and left shoulder belts.
The shoulder belts are operatively connected between the backrest and the seat support to restrain a seat occupant positioned on the seat support and against the backrest. In order to accommodate children of different sizes, adjustment of the shoulder belts on the backrest is required. Therefore, the backrest is formedwith two or more vertically spaced apart slots for each shoulder belt, and each shoulder belt can be removed from one slot and rethreaded through another slot to make necessary height adjustment.
However, in particular, when the conventional child seat is placed upon a vehicle seat to serve as a car seat, t s very trouhi esome to d sassembi e and assenhi e each shoulder belt from and to the backrest for shoulder belt height adjustment in the limited space available within the vehicle, thereby resulting in inconvenience during adjusting operation of the shoulder belts.
Therefore, an object of the present invention is to provide a shoulder belt height adjustment mechanism, and a backrest device for a child seat having the same that permit easy shoulder belt height adjustment.
According tc one aspect of the present invention, there is provided a shoulder belt height adjustnent meohanism for a child seat. The child seat includes a backrest and two sholllder belts. The backrest is formed with a pair of longitudinally extending guide slots, which are spaced apart from each other, and is provided with two positioning frames on a front thereof. Each of thepositioning frames is disposedacross a respective one of the guide slots and is formed with a plurality off longitudinallyspaced apart positioningholes, which are arranged along an inner edge of the respeotive one of the guide slots. The shoulder belt height adjustment mechanism of the present invention comprises a slide member and a locking device.
The slide member is adapted to be slidably mounted to the backrest. The slide member has a pair of longitudinally extending plate bodies, each of which is adapted to be positioned movably between the front o the backrest and a respectve one of the postonng frames to cover a respective one of the guide slots in the backrest and is adapted to have a respective one of the shoulder belts secured thereto, and a hollow handle body which is adapted to be disposed movably on a rear of the backrest andwhichhas opposite endportions.
Each of the end portions is adapted to pass through a respective one of the guide slots in the backrest, is connected with a respective one of the plate bodies, and is movable along the respective one of the guide slots in the backrest such that the slide member is longitudinally slidable relative to the backrest.
The locking device is mounted to the handle body of the slide member, and includes a pair of locking rods and an actuating block. The locking rods are retained movably between the handle body of the slide member and the backrest, and are spaced apart from each other in a horizontal direction. Each of the locking rods has a hook end portion, which is adapted to pass through a respective one of the guide slots in the backrest and extends toward the other one of the locking rods. The locking rods are movablebetweena locked position, where the hook end portions thereof move toward each other, and an unlocked position, where the hook end portions thereof move away from each other. The actuating block ismountedmovablyin the handle bodyof the slide member, and is disposed between and abuts against the locking rods. The actuating block is operable to actuate the locking rods to move from the locked position to the unlocked position.
When the locking rods are in the unlocked position, the slide member is longitudinally slidable relative to the backrest to adjust the plate bodies among a plurality of different height positions corresponding respectively to the positioning holes in each of the positioning frames of the backrest.
When the plate bodies of the slide member are adjusted to a desired one of the height positions, the looking rods move from the unlocked position to the locked position such that the hook end portion of each of the locking rods of the locking device passes through and releasably engages a corresponding one of the positioning holes in a respective one of the positioning frames of the backrest, thereby positioning the plate bodies of the slide member at the desired one of the height positions.
Accordingtoanotheraspectofthepresent invention, there is provided a backrest device for a child seat.
Thechildseatincludestwoshoulderbelts. Thebackrest device of the present invention comprises a backrest, a slide member, and a locking device.
The backrest is formed with a pair of longitudinally extending guide slots, which are spaced apart from each other, and is provided with two positioning frames on a front thereof. Each of the postonng frames s disposed across a respective one of the guide slots, and is formed with a plurality of longitudinally spaced apart positioning holes, which are arranged along an inner edge of the respective one of the guide slots.
The slide member is adapted to be slidably mounted to the backrest, and has a pair of longitudinally extending plate bodies, each of which is positioned movably between the front of the backrest and a respective one of the positioning frames to oover a respective one of the guide slots in the backrest and is adapted to have a respective one of the shoulder belts secured thereto, and a hollow handle body which is disposed movably on a rear of the backrest and which has opposite end portions. Each of the end portions passes through a respective one of the guide slots in the backrest, is connected with a respective one of the plate bodies, and is movable along the respective one off the guide slots in the backrest such that the slide member is longitudinally slidable relative to the backrest.
The locking device is mounted to the handle body of the slide member, and includes a pair of locking rods and an actuating block. The locking rods are retained movably between the handle body of the slide member and the backrest, and are spaced apart from each other in a horizontal direction. Each of the locking rods has a hook end porton, whch passes through a respectve one of the guide slots in the backrest and extends toward the other one of the locking rods. The locking rods are movable between a locked position, where the hook end portions thereof move toward each other, and anunlocked position, where the hook end portions thereof move away from each other. The actuating block is mounted movably to the handle body of the slide member, and is disposed betweenandabutsagainstthelockingrods. Theactuating block is operable to actuate the locking rods to move from the locked position to the unlocked position.
When the locking rods are in the unlocked position, the slide member is longitudinally slidable relative to the backrest to adjust the plate bodies among a plurality of different height positions corresponding respectively to the positioning holes in each of the positioning frames of the backrest.
When the plate bodies of the slide member are adjusted to a desired one of the height positions, the locking rods move from the unlocked position to the locked position such that the hook end portion of each of the locking rods of the locking device passes through and releasably engages a corresponding one of the positioning holes in a respective one of the positioning frames of the backrest, thereby positioning the plate bodies of the slide member at the desired one of the height positions.
Other features and advantages of the present inventionwillbecomeapparent inthe followingdetailed description of the preferred embodiment with reference to the accompanying drawings, of which: Figure 1 is a fragmentary rear perspective view showing the preferred embodiment of a backrest device according to the present invention; Figure 2 is a fragmentary front perspective view showing the preferred embodiment; Figure 3 is an enlarged schematic view showing an encircled portion of Figure 2; Figure 4 is a fragmentary front perspective view showing a backrest of the preferred embodiment; Figure5isanexplodedfrontperspectiveviewshowing a shoulder belt height adjustment mechanism of the preferred embodiment; Figure 6is an assembledrearperspective view showing the shoulder belt height adjustment mechanism; Figure 7 is an assembled front perspective view showing the shoulder belt height adjustment mechanism; Figure 8 is a front perspective view of the shoulder belt height adjustment mechanism without two plate bodies when two locking rods are lccated at a locked position; Figure 9 is a front perspective view of the shoulder belt height adjustment mechanism without the plate bodies when the locking rods are moved from the locked poston to an unlocked poston by actuaton of an actuating block; Figure 10 is a rear perspective view of an assembly of the locking rods and the actuating block; and
B
Figure 11 is a bottom perspective, partially schematic sectional view of the assembly of the locking rods and the actuating block.
Referring to Figures 1, 2 and 5, the preferred embodiment of a backrest device for a child seat not shown) including two shoulder belts aocording to the present invention is shown to include a backrest 1, a slide member 2, and a locking device 3. The slide menber 2 and the locking device 3 oooperatively constitune a shoulder belt height adjustment mechanism.
Referring further to Figure 4, the backrest 1 is formed with a pair of longitudinally extending guide slots 10, which are spaced apart from each other, and is provided with two positioning frames 13 on a front 11 thereof. Eachpositioning frame 13 is disposed across a respective guide slot 10, and is formed with a central opening 130, and a plurality of longitudinally spaced apart positioning holes 131, which are arranged along an inner edge of the respective guide slot 10.
Theslidemember2isslidablymountedtothebackrest 1 (see Figure 1) . Referring further to Figure 6, the slide member 2 has a pair of longitudinally extending plate bodies 21, and a hollow handle body 22. Each pate body 21 s postoned movably between the front 11 of the backrest 1 and a respective positioning frame 13 to cover a respective guide slot 10 in the backrest 1, as shown in Figure 2. Each plate body 21 is adapted to have a respective shoulder belt (not shown) secured thereto. Inthis embodiment, eachplatebody2l is formed with a through hole 211 that is exposed through the central opening 130 in the respective positioning frame 13 (see Figure 2) andthat is adapted to permit extension of the respective shoulderbelttherethrcugh. The handle body 22 is disposed movably on a rear 12 of the backrest 1, andhasoppositeendportions 221, eachofwhichpasses through a respective guide slot 10 in the backrest 1 and is connected with a respective plate body 21. Each end portion 221 of the handle body 22 is movable along the respective guide slot 10 in the backrest 1 such that the slide member 2 is longitudinally slidable relative to the backrest 1. In this embodiment, the handle body 22 of the slide member 2 is configured with two first positioning ribs 223 defining a position-limiting groove 222 therebetween, and a plurality of second positioning ribs 224, as best shown in Figure 5.
Referring further to Figure 7 to 11, the locking device 3 is mounted to the handle body 22 of the slide member 2, and includes a pair of locking rods 31, an actuating block 32, and a biasing unit.
The locking rods 31 are retained movably between the handle body 22 of the slide member 2 and the backrest 1, and are spaced apart from each other in a horizontal direction. In this embodiment, each locking rod 31 is movably positioned between two corresponding positioning ribs 224, as best shown in Figure 9. Each locking rod 31 has a hook end portion 311, which passes through a respective guide slot 10 in the backrest 1 and extends toward the other locking rod 31 (see Figures 2 and 8) . The locking rods 31 are movable between a locked position, where the hook end portions 311 thereof move toward each other (see Figure 8) , and an unlocked position, where the hook end portions 311 thereof move away from each other (see Figure 9) The actilating block 32 is mollnted movably in the handle body 22 of the slide member 2, and is disposed between and abuts against the locking rods 31. The actuating block 32 is operable to actuate the locking rods 31 to move from the locked position to the unlocked position. In this embodiment, the actuating block 32 has an upper abutting end 321 that is received in the handlebody22of the slidemember2, andaloweroperating end 322 that is exposed from the handle body 22 of the slide member 2 (see Figure 8) . It is noted that the upper abutting end 321 of the actuating block 32 has a pair of longitudinally symmetrical first inclined faces 3211 opposite to each other in the horizontal direction, as best shown in Figure 10. Preferably, each locking rod 31 further liasa second inc1ned face 312 complementary to and movably abutting against a respective first inclined face 3211 (see Figures 10 and 11) . In addition, the actuatingblock32 furtherhas anengagingprotrusion 323 adjacent to the upper abutting end 321 and movably engaging the position-limiting groove 222 in the handle body 22 of the slide member 2 (see Figure 8) such that the actuatingblock 32 is movable between a non-actuating position (see Figure 8) and an actuating position (see Figure 9) In this embodiment, the first inclined faces 3211 of the upper abutting end 321 of the actuating block 32 are inclined upwardly toward each other.
The biasing unit is mounted in the handle body 22 oi the slide member 2 for biasing the locking rods 31 toward the locked position. In this embodiment, the biasing unit includes two coil springs 33 each disposed in a respective end portion 221 of the handle body 22 of the slide member 2 and abutting against the hook end portion 311 of a respective locking rod 31.
In use, when the actuating block 32 of the locking device 3 is operated by upward pressing the operating end 322 of the actuating block 32 to move from the non-actuating position to the actuating position, the locking rods 31 of the locking device 3 are urged to move from the locked position to the unlocked position by movable abutment between the first inclined faces 3211 of the actuating block 32 and the second inclined faces 312 of the 1 ock ug rods 31. In thi s case, the s ide member 2 is longitudinally slidable relative to the backrest 1 to adjust the plate bodies 21 among a plurality of different height positions corresponding respectively to the positioning holes 131 in each positioning frame 13 of the backrest 1. Thereafter, when the plate bodies 21 of the slide member 2 are adjusted to a desired one of the height positions, the actuating block 32 is released such that the locking rods 31 nove from the unlocked position to the locked position in response to two biasing forces exerted respectively by the coil springs 33. In this case, the hook end portion 311 of each locking rod 31 of the locking device 3 passes through and releasably engages a corresponding positioning hole 131 in a respective positioning frame 13 of the backrest 1 (see Figure 3), thereby positioning the plate bodies 21 of the slide member 2 at the desired one of the height positions. In addition, the actuating block 32 is urged by the locking rods 31 moving to the locked position to move from the actuating position back to the non-actuating position.
Tn view of the above, a user can simultaneously operate the actuating block 32 of the locking device 3 and move the slide member 2 to adjust and position the plate bodies 21 to the desired height position with a single hand. Therefore, the backrest device of this invention can achieve shoulder belt height adjustment
more eas1y as compared to the prior art.

Claims (16)

  1. CLAIMS: 1. A shoulder belt height adjustment mechanism for a child seat, the child seat including a backrest and two shoulder belts, the backrest being formed with a pair of longitudinally extending guide slots, which are spaced apart from each other, and being provided with two positioning frames on a front thereof, each of the positioning frames being disposed across a respective one of the guide slots and being formed with a plurality oilongitudinallyspacedapartpositioningholes, which are arranged along an inner edge of the respective one of the guide slots, said shoulder belt height adjustment mechanism comprising: a slide member adapted to be slidably mounted to the backrest, said slide member having a pair of longitudinally extending plate bodies, each of which is adapted to be positionedmovablybetween the front of the backrest and a respective one of the positioning frames to covera respective one of the guide slots in the backrest and is adapted to have a respective one of the shoulder belts secured thereto, and a hollow handle body adapted to be disposed movably on a rear of the backrest and having opposite end portions, each of which s adapted to pass through a respective one of the guide slots in the backrest and is connectedwitharespectiveoneof saidplatebodies, each of said end portions of said handle body of said slide member being movable along the respective one of the guide slots in the backrest such that said slide member is longitudinally slidable relative to the backrest; and a locking device mounted to said handle body of said slide member, and including a pair of locking rods retained movably between said handle body of said slide member and the backrest, and spaced apart from each other in a horizontal direction, each of said locking rods having a hook end portion, which is adapted to pass through a respective one of the guide slots in the backrest and extends toward the other one of said locking rods, said looking rods beingmovablebetweenalockedposition, where saidhook end portions thereof move toward each other, and an unlockedposition, where said hook endportions thereof move away from each other, and an actuating blockmounted movably in said handle body of said slide member, and disposed between and abutting against said looking rods, said aotuatingblock being operable to actuate said looking rods to move from the locked position to the unlocked position; wherein, when said locking rods are in the unlocked relative to the backrest to adjust said plate bodies among a plurality of different height positions corresponding respectively to the positioning holes in each of the positioning frames of the backrest; and wherein, when said plate bodies of said slide menber are adjusted to a desired one of the height positions, said locking rods move from the unlocked position to the locked position such that said hook end portion of each of said locking rods of said looking device passes through and releasably engages a oorresponding one of the positioning holes in a respective one of the positioning frames of thebackrest, therebypositioning said plate bodies of said slide member at the desired one of the height positions.
  2. 2. The shoulder belt height adjustment mechanism as claimed in Claim 1, wherein said locking device further includes a biasing unit mounted in said handle body of said slide member for biasing said locking rods toward the locked position.
  3. 3. The shoulder belt height adjustment mechanism as claimed in Claim 2, wherein said biasing unit of said locking device includes two coil springs each disposed in a respective one of said end portions of said handle body of said slide member and abutting against said hook end porton of a respectve one of sad 1ockng rods.
  4. 4. The shoulder belt height adjustment mechanism as claimed in Claim 1, wherein: said handle body of said slide member is formed with a position-limiting groove; and said actuating block of said locking device has an engaging protrusion movably engaging said position-limitinggroovesuchthatsaidactuatingblock is movable between a non-actuating position and an actuating position.
  5. 5. The shoulder belt height adjustment mechanism as claimed in Claim 4, wherein: said actuating block of said locking device has a pair of longitudinally symmetrical first inclined faces opposite to each other in the horizontal direction; each of said locking rods of said locking device has a second inclined face complementary to and movably abutting against a respective one of said first inclined faces of said actuating block; and when said actuating block of said locking device is operated to move from the non-actuating position to the actuating position, said locking rods of said locking device are urged to move from the locked position to the unlocked position by movable abutment respectively between said first inclined faces of saidactuatingblock and said second inc1ned faces of said locking rods.
  6. 6. The shoulder belt height adjustment mechanism as claimed in Claim 5, wherein: said actuating block of said locking device has an upper abutting end, which has said first inclined faces, and a lower operating end, which is exposed from said handle body of said slide member; and said first inclined faces of said actuating block of said locking device are inclined upwardly toward each other.
  7. 7. The shoulder belt height adjustment mechanism as claimed in Claim, wherein each of said plate bodies of said slide member is formed with a through hole that is adapted to permit extension of the respective one of the shoulder belts therethrough.
  8. 8. A shoulder belt height adjustment mechanism substantially as hereinbefore described with reference to and as illustrated the accompanying drawings.
  9. 9. A backrest device for a child seat, the child seat including two shoulder belts, said backrest device comprising: a backrest formed with a pair of longitudinally extending guide slots, which are spaced apart from each other, and provided wtb two postonng frames on a front thereof, each of said positioning frames being disposed across a respective one of said guide slots and being formed with a plurality of longitudinally spaced apart positioning holes, which are arranged along an inner edge of the respective one of said guide slots; a slide member slidably mounted to said backrest, said slide member having a pair of longitudinally extending plate bodies, each of which is positioned movably between said front of saidbackrest arid a respective one of saidpositioning frames to cover a respective one of said guide slots in said backrest and is adapted to have a respective one of the shoulder belts secured thereto, and a hollow handle body that is disposed movably on a rear of saidbackrest and that has opposite endportions, each of which passes through a respective one of said guide slots in said backrest and is connected with a respective one of said plate bodies, each of said end portions of said handle body of said slide member being movable along the respective one of said guide slots in said backrest such that said slide member is longitudinally slidable relative to said backrest; and a locking device mounted to said handle body of said slide member, and including a pair of locking rods retained movably between said handle body of said slide member and said backrest, and spaced apart from each other n a hoHzontal direction, each of said locking rods having a hook end portion, which passes through a respective one of said guide slots in saidbackrest and extends toward the other 1 9 one of saidlocking rods, said locking rodsbeingmovabie between a lockedposition, where said hook endportions thereof move towardeaohother, and anunlockedposit±on, where said hook end portions thereof move away from each other, and an actuating blockmounted movably in said handle body of said slide member, and disposed between and abutting against said locking rods, said actuatingblock being operable to actuate said locking rods to move from the locked position to the unlocked position; wherein, when said locking rods are in the unlocked position, said slide member is longitudinally slidable relative to said backrest to adjust said plate bodies among a plurality of different height positions corresponding respectively to said positioning holes in each of said positioning frames of said backrest; and wherein, when said plate bodies of said slide member are adjusted to a desired one of the height positions, said locking rods move from the unlocked position to the locked position such that said hook end portion of each of said locking rods of said locking device passes through and releasably engages a corresponding one of said positioning boles in a respective one of said positioning francs of said backrest, thereby positioning said plate bodies of said slide member at the desired one of the height positions.
  10. 10. The backrest device as claimed in Claim 9, wherein said locking device further includes a biasing unit mounted in said handle body of said slide member for biasing said locking rods toward the locked position.
  11. 11. The backrest device as claimed in Claim 10, wherein said biasing unit of said locking device includes two coil springs each disposed in a respective one of said end portions of said handle body of said slide member and abutting against said hook end portion of a respective one of said locking rods.
  12. 12. The backrest device as claimed in Claim 9, wherein: said handle body of said slide member is formed with a position-limiting groove; and said actuating block of said locking device has an engaging protrusion movably engaging said position-limiting groove such that said actuating block is movable between a non-actuating position and an actuating position.
  13. 13. Thebackrestdeviceas claimedinClaiml2, wherein: said actuating block of said locking device has a pair of longitudinally symmetrical first inclined faces opposite to each other in the horizontal direction; each of said locking rods of said locking device has a second inclined face complementary to and movably abutting against a respective one of said first inclined faces of said actuating block; and when said actuating block of said locking device is operatedtomove fromthencn-actuatingposition to the actuating position, said locking rods of said locking device are urged to move from the locked position to the unlocked position by movable abutment respectively between said first inclined faces of saidactuatingblock and said second inclined faces of said locking rods.
  14. 14. Thebackrestdeviceas claimedinClaiml3, wherein: said actuating block of said locking device has an upper abutting end that is received in said handle body of said slide member and that has said first inclined faces, and a lower operating end that is exposed from said handle body of said slide member; and said first inclined faces of said actuating block of said locking device are inclined upwardly toward each other.
  15. 15. The backrest device as claimed in Claim 9, wherein each of said plate bodies of said slide member is formed with a through bole that is adapted to permit extension offtherespectiveoneoftheshoulderbeltstherethrough.
  16. 16. A backrest device substantially as hereinbefore described with reference to and as illustrated the accompanying drawings.
GB201312418A 2012-07-16 2013-07-11 Shoulder belt height adjustment mechanism, and backrest device for a child seat having the same Active GB2505993B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012203443385U CN202686263U (en) 2012-07-16 2012-07-16 Shoulder strap adjusting mechanism and child seat with same

Publications (3)

Publication Number Publication Date
GB201312418D0 GB201312418D0 (en) 2013-08-28
GB2505993A true GB2505993A (en) 2014-03-19
GB2505993B GB2505993B (en) 2019-12-25

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GB201312418A Active GB2505993B (en) 2012-07-16 2013-07-11 Shoulder belt height adjustment mechanism, and backrest device for a child seat having the same

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CN (1) CN202686263U (en)
DE (1) DE202013006327U1 (en)
GB (1) GB2505993B (en)

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GB2613210A (en) * 2021-11-24 2023-05-31 Zhejiang Jinhua Snowbaby Baby Items Mfg Co Ltd Structure for adjusting heights of headrest and canopy of baby stroller

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CN109602214A (en) * 2014-10-15 2019-04-12 明门香港股份有限公司 Height of chassis above ground adjustment mechanism and vehicle frame
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GB201312418D0 (en) 2013-08-28

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