The utility model content
The purpose of this utility model is the defective that exists at prior art, and a kind of luggage case of the chair of usheing to seat is provided, and the travelling of let us or be on home leave and become more light and happy makes us where walk on the road where to sit on.For achieving the above object, design of the present utility model is: the utility model is considered tilting seat folding and unfolding principle, retractable six-bar mechanism of design on common rod-pulling type luggage case, to realize the function of rumble seat, but and the low self-locking of this agency cost, simple in structure, and can save when travelling outdoors in addition trouble with a little seat.
In order to realize above-mentioned functions, the design six-bar mechanism as shown in Figure 1.This six-bar mechanism comprises upper slide bar, drop shot, spike pole, seat surface pole, fork and six members of support, and wherein the first five is a movable part.Therefore this mechanism comprises five movable parts, five revolute pairs and two moving sets, and its freedom of movement is: n=3 * 5-2 * 7=1.
Be illustrated in figure 2 as the open mode of mechanism, wherein spike pole below has elongated portion to support ground, upper slide bar and drop shot below all have fixed block to limit its slip at vertical direction, the elongated portion of seat surface pole is linked to each other by plain cotton fabric with the top of spike pole, form a fixing cam mechanism, can bear constant weight, the people just can take rest, and this moment, fork played certain supplemental support effect.
When fork when clockwise direction rotates, spike pole is counterclockwise rotated, seat surface pole clockwise direction rotates, upper slide bar and drop shot upwards slide, when fork and spike pole are close to support when forming straight line, mechanism forms self-locking, and this moment, mechanism belonged to retracted state.
According to above-mentioned utility model design, the utility model adopts following technical proposals:
A kind of luggage case of the chair of usheing to seat, comprise by support, the rod-pulling type luggage case that constitutes of pull bar, fixed strip, casing and pulley slidably, it is characterized in that being equipped with on the described support retractable six-bar mechanism, but constitute the folding and unfolding seat frame, and a plain cotton fabric is set, but form the folding and unfolding seat in the upper end of described folding and unfolding seat frame formation seat face.
But the structure of above-mentioned jack is: upper slide bar of suit and a drop shot respectively slide on two parallel bars of described support, the two ends of a doorframe shape seat surface pole are hinged with described drop shot respectively, a doorframe shape spike pole gets two ends and described upper slide bar hinge, described doorframe shape seat surface pole and doorframe shape spike pole middle part intersects hinge, two forks and described doorframe shape seat surface pole keeping parallelism are arranged, and the lower end is hinged with described support two parallel bars respectively, and upper end and described spike pole hinge.
A fixedly connected whippletree between above-mentioned two upper slide bars, an end of described plain cotton fabric is sleeved on this whippletree, and the other end is sleeved on the described doorframe shape seat surface pole.
But above-mentioned folding and unfolding seat is decontroled when being the seat state, has two last blocks to be separately fixed on two parallel bars of support near place, described upper slide bar lower surface, and near place, drop shot lower surface, has two following blocks to be separately fixed on two parallel bars of support.
The advantage of the utility model luggage case and common luggage case is: increase the seat function, can free folding and unfolding, and when the pull bar pull-up, can also play backrest function, the height of seat design suitably meets ergonomics, and bright market prospects are arranged.
The specific embodiment
Details are as follows in conjunction with the accompanying drawings for a preferential embodiment of the present utility model: referring to Fig. 2 and Fig. 3, originally the usher to seat luggage case of chair, comprise by support 6, the rod-pulling type luggage case that constitutes of pull bar 8, fixed strip 9, casing 11 and pulley 12 slidably, on the described support 6 but the folding and unfolding six-bar mechanism is housed, but constitute the folding and unfolding seat frame, and a plain cotton fabric 7 is set, but form the folding and unfolding seat in the upper end of described folding and unfolding seat frame formation seat face.But the structure of above-mentioned folding and unfolding six-bar mechanism is: upper slide bar 3 of suit and a drop shot 5 respectively slide on two parallel bars of described support 6, the two ends of a doorframe shape seat surface pole 4 are hinged with described drop shot 5 respectively, the two ends of a doorframe shape spike pole 2 and described upper slide bar 3 are hinged, described doorframe shape seat surface pole 4 and doorframe shape spike pole 2 middle parts intersect hinge, two forks 1 and described doorframe shape seat surface pole 4 keeping parallelisms are arranged, and the lower end is hinged in respectively on the casing 11, and upper end and described spike pole 2 are hinged.A fixedly connected whippletree between two above-mentioned upper slide bars 3, an end of described plain cotton fabric 7 is sleeved on this whippletree, and the other end is sleeved on the described doorframe shape seat surface pole 4.But above-mentioned folding and unfolding seat is decontroled when being the seat state, there are two last blocks 10 to be separately fixed on two parallel bars of support 6 near place, described upper slide bar 3 lower surfaces, and, there are two following blocks 13 to be separately fixed on two parallel bars of support 6 near place, drop shot 5 lower surfaces.