CN202448776U

CN202448776U - Chair back assembly

Info

Publication number: CN202448776U
Application number: CN2011205438955U
Authority: CN
Inventors: 张大亮; 刘祖建
Original assignee: CHINA BAMBINO PREZIOSO CO LTD
Current assignee: CHINA BAMBINO PREZIOSO CO LTD
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2012-09-26
Anticipated expiration: 2021-12-21

Abstract

The utility model discloses a chair back assembly, which is installed on the seat of a child safety seat, wherein the chair back assembly includes a backrest, a headrest and a locking member, one end of the backrest is fixedly installed on the seat of the child safety seat, the headrest is slidably installed on the other end of the backrest, the locking member is operably and movably installed on the headrest, the backrest is provided with a plurality of latch teeth, the locking member selectively engages with one of the latch teeth to achieve locking of the headrest relative to the backrest after sliding. Compared with the prior art, the chair back assembly of the utility model has a simple structure, low cost and convenient operation.

Description

Chair back assembly

Technical field

The utility model relates to the safety chair seats of car for children field, relates more specifically to the chair back assembly on a kind of base that is installed on child safety seat.

Background technology

Child safety seat is that a kind of lying in supplies children's ride-on on the car seat, and is fixed on child safety seat to children to ensure the device of child safety through constraint equipment.Because child safety seat can reduce children's suffered injury under automobile generation emergency braking or accident collision situation to the full extent.Therefore, child safety seat is accepted by the customer very soon, and slowly obtains in the whole world promoting.

Existing safety chair seats of car for children generally comprises base and is installed on the chair back assembly of said base.Said chair back assembly comprises and leaning against and head rest that said leaning against is installed on said base, and said head rest is installed on the said upper end that leans against.For the children's that satisfy all ages and classes section the requirement of taking, said head rest generally can saidly relatively lean against and do corresponding height adjustment.

For addressing the above problem, generally can on said chair back assembly, set up a head rest adjusting mechanism in addition.But, so just increased the manufacturing cost of said chair back assembly and even whole child safety seat.In addition, setting up of said head rest adjusting mechanism makes that also the manufacturing of said chair back assembly is complicated more, brought inconvenience also for simultaneously people's operation.

Therefore, be necessary to provide a kind of later-model chair back assembly, this chair back unit construction is simple, and people can conveniently adjust the height of said head rest, and cheap for manufacturing cost.

The utility model content

The purpose of the utility model provides a kind of chair back assembly, and this chair back unit construction is simple, and people can conveniently adjust the height of said head rest, and cheap for manufacturing cost.

For realizing above-mentioned purpose; The utility model provides a kind of chair back assembly, is installed in the seat portion of child safety seat, wherein; Said chair back assembly comprise lean against, head rest and locking piece; A said end that leans against is fixedly installed in the seat portion of said child safety seat, and said head rest is installed on the said other end that leans against slidably, and said locking piece can be operated and be installed on said head rest movably; Said leaning against is provided with a plurality of latches, and said locking piece selectively engages with a said latch to realize the said relatively locking that leans against the position, back of sliding of said head rest.

Compared with prior art, the utility model chair back assembly comprises that one is installed on the locking piece of head rest movably, leans against and is provided with a plurality of latches, and said locking piece selectively engages with a said latch; Upwards spur said head rest, can make the distortion of said locking piece, thereby break away from and the engaging of a said latch, and then realize the adjustment of said head rest height; After treating said head rest is adjusted in advance height, operate again said locking piece make said locking piece again with the engaging of another said latch, to realize the said relatively locking that leans against the position, back of sliding of said head rest.This chair back unit construction is simple, with low cost, and easy to operate.

Preferably, said locking piece is elastic construction.

Particularly, said head rest is provided with track, and said locking piece is installed in the said track and along said track and slides up and down.

Particularly, said locking piece comprises an operating portion and an engagement section, and said operating station is in the upper end of said locking piece, and said engagement section is positioned at the lower end of said locking piece, and said engagement section engages with a said latch.

Preferably, said head rest has an opening corresponding to place, said engagement section, and said engagement section engages with a said latch through said opening.

Preferably, all rectangular echelon form in said latch and said engagement section.

Preferably; Said chair back assembly also comprises stop gear; Said stop gear comprises and is arranged at first limited part that leans against the top and is arranged at second limited part on the said head rest; Said head rest is said relatively to be leaned against when upwards sliding, and said first limited part and said second limited part are conflicted to prevent that said head rest from moving apart from said leaning against.

Preferably, said first limited part is a cross rib, and said second limited part is a fin.

Particularly, said locking piece is installed on the back of said head rest.

Alternatively, said chair back assembly also comprises stop gear, said stop gear be arranged at said head rest and lean against between to prevent that said head rest from moving apart from said leaning against.

Through following description and combine accompanying drawing, it is more clear that the utility model will become, and these accompanying drawings are used to explain the embodiment of the utility model.

Description of drawings

Fig. 1 is the block diagram after the utility model chair back assembly one embodiment is installed on a portion.

Fig. 2 is the block diagram of chair back assembly shown in Figure 1, and said head rest is in first fragment position.

Fig. 3 is in the block diagram of the 6th fragment position for the head rest of chair back assembly shown in Figure 2.

Fig. 4 is the exploded drawings of Fig. 2.

Fig. 5 is the enlarged drawing of I part shown in Figure 1.

Fig. 6 is the block diagram of another angle of head rest shown in Figure 4.

Fig. 7 is the block diagram that leans against another angle shown in Figure 4.

Fig. 8 is the cutaway drawing along A-A line shown in Figure 2.

Fig. 9 is the enlarged drawing of II shown in Figure 8 part, and said engagement section and said latch are in the lock state.

Figure 10 is in the scheme drawing of release the lock state for said engagement section of Fig. 9 and said latch.

The specific embodiment

With reference now to accompanying drawing, describe the embodiment of the utility model, the similar elements label is represented similar elements in the accompanying drawing.

Please refer to Fig. 1, described an embodiment of the utility model chair back assembly 100.Said chair back assembly 100 is installed in the seat portion 200 of child safety seat.

Please refer to Fig. 2 to Fig. 3 again; Said chair back assembly 100 comprise lean against 10, head rest 20, locking piece 30 and stop gear 40; Saidly lean against the seat portion 200 that an end (being the lower end) of 10 is fixedly installed in said child safety seat; Said head rest 20 is installed on said 10 the other end (i.e. upper end) that leans against slidably, and said locking piece 30 can be operated the back that is installed on said head rest 20 movably, and said stop gear 40 is arranged at said head rest 20 and leans against between 30.

Particularly, as shown in Figure 4, said head rest 20 is provided with track 201, and said locking piece 30 is installed in the said track 201 and along said track 201 and slides up and down.

In the present embodiment; Saidly lean against 10 and be provided with six latches 101; Said locking piece 30 comprises an operating portion 301 and an engagement section 302, and said operating portion 301 is positioned at the upper end of said locking piece 30, and said engagement section 302 is positioned at the lower end of said operating portion 301; And said head rest 20 has an opening 3021 (like Fig. 9 and shown in Figure 10) corresponding to 302 places, said engagement section, and said engagement section 302 engages with a said latch 101 through said opening 3021.

Preferably, said locking piece 30 is elastic construction.

Preferably, said latch 101 and all rectangular echelon form in said engagement section 302, extremely shown in Figure 10 like Fig. 8.

Particularly; Comprise in conjunction with the said stop gear 40 of Fig. 5 to Fig. 7 and to be arranged at first limited part 401 that leans against 10 tops and to be arranged at second limited part 402 on the said head rest 20; In the present embodiment; Said first limited part 401 is one to be positioned at the said cross rib that leans against 10 sides, and said second limited part 402 is one to be positioned at the fin of head rest 20 sides.Lean against 10 when upwards sliding into the extreme higher position when said head rest 20 is said relatively, said cross rib 401 is conflicted to prevent that said head rest 20 from being pulled with said fin 402.

When said head rest 20 was in first fragment position shown in Figure 2, said engagement section 302 engaged with the latch 101 that is positioned at bottom, and to realize the state locking of said head rest 20 when first fragment position, lock-out state is as shown in Figure 5.When needs adjust upward said head rest 20, upwards spur earlier said head rest 20, because said locking piece 30 is elastic construction; Under the extruding that receives said head rest 20; Said engagement section 302 will deform, thereby breaks away from and the engaging of said latch 101, and reaches release the lock state as shown in Figure 6; Upwards spur said head rest 20 afterwards again, just can realize the upwards adjustment of height of said head rest 20, for example be adjusted to the 6th fragment position as shown in Figure 2.After said head rest 20 is adjusted to the 6th fragment position as shown in Figure 6 because the elastic construction of said locking piece 30, said engagement section 302 can be positioned at latch 101 topmost and engage, lock to realize the state of said head rest 20 when the 6th fragment position.

And when the said head rest 20 of needs adjustment downwards; Need the said head rest 20 of pulling earlier; Make said engagement section 302 break away from and the engaging of said latch 101; Operate said operating parts 30 again so that said engagement section 302 is maintained at lock-out state, move down said head rest 20 at last to carry out the adjustment of downward section.

It should be noted that in the present embodiment, saidly lean against 10 and be provided with six latches 101, only can realize the adjustment of said head rest 20 6 fragment position.But the adjustment of the section of said head rest 20 is not limited thereto, and can a plurality of latches 101 be set to realize the adjustment of a plurality of sections on 10 said leaning against as the case may be.In addition, when making progress the section adjustment, the said head rest 20 of direct pull can be accomplished, and need not operate said locking piece 30.

Can know that from above description said chair back assembly 100 is simple in structure, with low cost, and easy to operate.

More than combine most preferred embodiment that the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to the essence of the utility model.

Claims

1. chair back assembly; Be installed in the seat portion of child safety seat; It is characterized in that: said chair back assembly comprise lean against, head rest and locking piece; A said end that leans against is installed on the seat portion of said child safety seat, and said head rest is installed on the said other end that leans against slidably, and said locking piece can be operated and be installed on said head rest movably; Said leaning against is provided with a plurality of latches, and said locking piece selectively engages with a said latch to realize the said relatively locking that leans against the position, back of sliding of said head rest.

2. chair back assembly as claimed in claim 1 is characterized in that: said locking piece is elastic construction.

3. chair back assembly as claimed in claim 1 is characterized in that: said head rest is provided with track, and said locking piece is installed in the said track and along said track and slides up and down.

4. like claim 2 or 3 described chair back assemblies; It is characterized in that: said locking piece comprises an operating portion and an engagement section; Said operating station is in the upper end of said locking piece, and said engagement section is positioned at the lower end of said locking piece, and said engagement section engages with a said latch.

5. chair back assembly as claimed in claim 4 is characterized in that: said head rest has an opening corresponding to place, said engagement section, and said engagement section engages with a said latch through said opening.

6. chair back assembly as claimed in claim 4 is characterized in that: all rectangular echelon form in said latch and said engagement section.

7. like claim 2 or 3 described chair back assemblies; It is characterized in that: also comprise stop gear; Said stop gear comprises and is arranged at first limited part that leans against the top and is arranged at second limited part on the said head rest; Said head rest is said relatively to be leaned against when upwards sliding, and said first limited part and said second limited part are conflicted to prevent that said head rest from moving apart from said leaning against.

8. chair back assembly as claimed in claim 7 is characterized in that: said first limited part is a cross rib, and said second limited part is a fin.

9. like claim 2 or 3 described chair back assemblies, it is characterized in that: said locking piece is installed on the back of said head rest.

10. chair back assembly as claimed in claim 9 is characterized in that: also comprise stop gear, said stop gear be arranged at said head rest and lean against between to prevent that said head rest from moving apart from said leaning against.