CN2776789Y - Inward contractable mechanism for child carriage seat and back - Google Patents

Abstract

The utility model discloses an inward contractible mechanism for a cushion and a backrest of a baby carriage, which comprises a bottom support, a lower bracket, a cushion rod, a backrest rod, and a cushion connecting rod, wherein one end of the cushion connecting rod is hinged with the bottom support rotatablely connected with the lower bracket; the utility model also comprises a cushion bracket and a telescopic coupled rod, wherein both ends of the cushion bracket are respectively hinged with the other end of the cushion connecting rod and the lower bracket, the cushion rod can be telescopically fixed in the cushion rod, both ends of the telescopic coupled rod are respectively hinged with the cushion rod and the cushion connecting rod, and the backrest rod is also hinged with the cushion connecting rod. The utility model which adopts the structure has the advantages that when a carriage frame is folded, the telescopic coupled rod is caused to push the cushion rod to move forward, and thus, the cushion can be contracted. In addition, the backrest rod is also hinged with the cushion connecting rod; when the baby carriage is folded, the cushion rod moves forward and can drive the backrest rod to move, and thus, the backrest rod can also be contracted.

Description

The mechanism that perambulator seat cushion and backrest can inwardly shrink

Technical field

The utility model relates to a kind of baby strollers, especially the mechanism that can inwardly shrink of perambulator seat cushion and backrest.

Background technology

It has advantages such as the baby of carrying is convenient, safety baby strollers, therefore is widely used.On the other hand, people always want to make perambulator transportation, the volume when depositing the smaller the better, and the folding problem of perambulator has also just become the research emphasis of perambulator manufacturing enterprise.The existing collapsible four-bar linkage structure of generally forming by front leg, boxed rod, lower link and handspike is realized folding.Behind the general Pram folding, back support bar tends to stretch out outside the vehicle frame, becomes the length upperlimit point behind the Pram folding, and the packing measurements that the result enlarges has increased traffic cost, has brought inconvenience also for simultaneously customer's use.

Summary of the invention

At the problems referred to above, the problem that the utility model quasi-solution is determined provides the mechanism that a kind of perambulator seat cushion and backrest can inwardly shrink.

For addressing the above problem, the utility model is by the following technical solutions: the mechanism that a kind of perambulator seat cushion and backrest can inwardly shrink, comprise bottom bracing, lower bracket, seat cushion bar, back support bar and seat cushion link, described seat cushion link one end and bottom bracing are hinged, bottom bracing and lower bracket are rotatably connected, it also comprises seat bracket and flexible trace, and seat bracket two ends are hinged with the seat cushion link other end, lower bracket respectively; Described seat cushion bar is scalable to be fixed in the seat cushion bar; Two ends of described flexible trace are hinged with seat cushion bar, seat cushion link respectively; Described back support bar is also hinged with seat cushion link.

The scalable structure that is fixed on seat bracket of above-mentioned seat cushion bar is: the seat cushion bar is provided with pulley, is provided with the track that is complementary with pulley in the seat bracket.

The mechanism that above-mentioned perambulator seat cushion and backrest can inwardly shrink, described back support bar and seat cushion link hinged place also are provided with backrest adjustment spare, between the back support bar of the left and right sides, be provided with the backrest adjustment cross bar, described backrest adjustment spare is provided with one or one or more chute, and two ends of described backrest adjustment cross bar are inserted in the chute of backrest adjustment spare.

Said structure, bottom bracing, lower bracket, seat cushion link and seat bracket have been formed four-bar linkage structure, can fold, be fixed in the seat cushion bar owing to the seat cushion bar is scalable when folding, two ends of flexible trace are hinged with seat cushion bar, seat cushion link respectively, make flexible trace promote the seat cushion bar and move forward, realized the seat cushion contraction.Back support bar is also hinged with seat cushion link in addition, and the seat cushion bar can drive back support bar and move to moving forward when Pram folding, makes back support bar equally also realize contraction.

Description of drawings

Fig. 1 is the integral structure figure of the mechanism that can inwardly shrink of the utility model perambulator seat cushion and backrest;

Fig. 2 is that the A-A of Fig. 1 is to enlarged drawing;

Fig. 3 is the birds-eye view of Fig. 1.

Among the figure: 1-seat cushion bar, the 2-back support bar, the 3-trace that stretches, the 4-seat cushion link, the 5-lower bracket, the 6-bottom bracing, the 7-track, the 8-pulley, the 9-seat bracket, 10-regulates cross bar and is inserted in backrest adjustment spare part, and 11-regulates cross bar, 12-backrest adjustment spare, 13-chute.

The specific embodiment

As shown in Figure 1, the mechanism that a kind of perambulator seat cushion of the present utility model and backrest can inwardly shrink comprises bottom bracing 6, lower bracket 5, seat cushion bar 1, back support bar 2, seat cushion link 4, seat bracket 9 and flexible trace 3.Seat bracket 9 two ends are hinged with seat cushion link 4 lower brackets 5 respectively, and the other end of seat cushion link 4 and bottom bracing 6 are hinged, and bottom bracing 6 is rotatably connected with lower bracket 5.Like this, seat bracket 9, seat cushion link 4, lower bracket 5 and bottom bracing 6 constitute four-bar linkage structure, can fold contraction.This structure is consistent with prior art, therefore is not described in detail here.

One of difference structure of the present utility model is: described seat cushion bar 1 scalable being fixed in the seat bracket 9.Its optimal way is provided with pulley 8 for present lining bar 1, be provided with the track 7 (referring to Fig. 2) that is complementary with pulley 8 in the seat bracket, realized seat cushion bar 1 scalable being fixed in the seat bracket 9 like this, certainly, its scalable fixing structure that can also adopt other related art.

Difference one of structure is: be provided with flexible trace 3, two ends of flexible trace 3 are hinged with seat cushion bar 1, seat cushion link 4 respectively.Like this because the seat cushion bar is scalable is fixed in the seat cushion bar, formed four-bar linkage structure when folding at bottom bracing, lower bracket, seat cushion link and seat bracket, make flexible trace promote the seat cushion bar and move forward, realized the seat cushion contraction.

Three of difference structure is: back support bar 2 is also hinged with seat cushion link 4, and the seat cushion bar moves forward when Pram folding, can drive back support bar and move, and makes back support bar equally also realize contraction.

Referring to Fig. 3, as improvement of the present utility model, back support bar 2 also is provided with backrest adjustment spare 12 with seat cushion link 4 hinged places, between the back support bar of the left and right sides, be provided with backrest adjustment cross bar 11, described backrest adjustment spare 15 is provided with three chutes 13 (as required, upper hopper chute 13 can be other number), two ends of described backrest adjustment cross bar 11 are inserted in the chute 13 of backrest adjustment spare 12.Three chutes 13 of backrest adjustment spare 12 are for the 11 slip releases of backrest adjustment cross bar.When vehicle frame folding, seat cushion bar 1 moves forward, and backrest adjustment cross bar 11 2 end insertion portions 10 skid off release along chute 16, and back support bar 2 can fold at any gear, and inwardly shrinks.

Claims (3)

1, the mechanism that can inwardly shrink of a kind of perambulator seat cushion and backrest, comprise bottom bracing (6), lower bracket (5), seat cushion bar (1), back support bar (2) and seat cushion link (4), described seat cushion link (4) one ends and bottom bracing (6) are hinged, bottom bracing (6) is rotatably connected with lower bracket (5), it is characterized in that it also comprises seat bracket (9) and flexible trace (3), seat bracket (9) two ends respectively and seat cushion link (4) other end, lower bracket (5) hinged; Described seat cushion bar (1) is scalable to be fixed in the seat bracket (9); Two ends of described flexible trace (3) are hinged with seat cushion bar (1), seat cushion link (4) respectively; Described back support bar (2) is also hinged with seat cushion link (4).

2, the mechanism that can inwardly shrink of perambulator seat cushion according to claim 1 and backrest, it is characterized in that the scalable structure that is fixed on seat bracket (9) of described seat cushion bar (1) is: seat cushion bar (1) is provided with pulley (8), is provided with the track (7) that is complementary with pulley (8) in the seat bracket (9).

3, the mechanism that can inwardly shrink of perambulator seat cushion according to claim 1 and 2 and backrest, it is characterized in that described back support bar (2) and seat cushion link (4) hinged place also are provided with backrest adjustment spare (15), between the back support bar of the left and right sides, be provided with backrest adjustment cross bar (11), described backrest adjustment spare (15) is provided with one or one or more chute (16), and two ends of described backrest adjustment cross bar (11) are inserted in the chute (16) of backrest adjustment spare (15).

Images