The multifunctional leisure folding seat
Technical field
The utility model relates to a kind of folding seat, is specifically related to a kind of multifunctional leisure folding seat.
Background technology
Folding seat form in the daily life is more and more diversified, and additional function is more and more.Most of folding seat utilize the revolute pair between seat board and the backrest to realize the functional mapping of chair and bed, these folding seat generally just realize the adjusting of several angles by screens, a lot of folding seat can not directly be launched into bed by wall, the chair back can not descend reposefully, and chair and bed use inconvenient when changing function.And need artificial braking when being adjusted to each angle, can not realize self-locking, operation is extremely inconvenient.Some folding seat can only be laid solid at allocation, needs the manpower transport when mobile, wastes time and energy, and folding seat is carried flexible performance and is weak.Although the additional function of folding seat is more and more, all relatively more fixing and traditionization still has improved space.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of multifunctional leisure folding seat is provided, and that this folding seat should have is easy to use, simple in structure, the characteristics of good reliability, diverse in function.
The utility model is by the following technical solutions:
The multifunctional leisure folding seat, comprise base, horizontally disposed seat, the backrest that is fixed on the underframe of the seat left and right sides and is hinged on the seat rear side, it is characterized in that: each underframe respectively is connected with described base with second connecting rod by two first connecting rods that are parallel to each other, article two, the upper end of connecting rod is hinged on the front portion of underframe, the lower end is hinged on the rear portion of base, with base, underframe forms a parallel-crank mechanism together, the parallel-crank mechanism on seat left side and right side is arranged symmetrically with, and wherein the top of two first connecting rods is hinged by third connecting rod and described backrest respectively;
Described seat parallel beneath is provided with a movable leg plate, and the left and right sides of this leg plate is installed on described two underframe by slide rail; The rear portion of seat is fixed wtih be used to the driving mechanism that drives described leg plate front and back slippage;
Described folding seat also is provided with height regulating mechanism, left side and the right side of this mechanism are arranged symmetrically with, comprise respectively the 4th connecting rod, the 5th connecting rod and roller, the upper end of described the 4th connecting rod and the rear side of underframe are hinged, the front side of the upper end of the 5th connecting rod and described leg plate is hinged, and the 4th connecting rod and the 5th connecting rod are hinged on respectively again in the rotating shaft of described roller, and the bottom of two rollers all contacts with base, and shared same rotating shaft of two rollers, this rotating shaft is along the left and right directions horizontal stretching of base.
Described driving mechanism comprises the motor that is fixed on the described seat, and this motor rotates by the screw mandrel of gear driven one along the fore-and-aft direction horizontal stretching, and the front end of this screw mandrel is installed in the swivel nut of described leg plate bottom.
The top of described underframe is provided with the slide rail that stretches along fore-and-aft direction, and the slideable armrest that each side has of folding seat is installed in the described slide rail.
The top of described handrail is hinged with turnover gripper shoe.
The bottom of described base is provided with road wheel.
Operation principle of the present utility model is: be in the process that " chair " arrive " bed ", make electric machine rotation, by gear driven screw mandrel rotation action, thereby the leg plate skids off towards the front side and spurs the 5th connecting rod advance the puck, the lower end of the 5th connecting rod, roller, the 4th connecting rod is hinged, thereby so that roller past front slide pulled down underframe on base, underframe level under the effect of parallel-crank mechanism descends; Third connecting rod drives the backrest rotation simultaneously; When third connecting rod and backrest were positioned at same straight line, the dead point appearred in seat, backrest and third connecting rod, can realize the chaise longue function, walked around this dead point and can also carry out some angular adjustment, can realize the function of bed at the place, final position;
When being in the state of " bed ", make the motor backward rotation, thereby drive the screw mandrel action, thereby moving backwards, moves in the retraction leg plate, underframe rises under the effect of parallel-crank mechanism, and (backrest rises together, and the backrest upper edge rises along same vertical line, the displacement of horizontal direction is zero), third connecting rod drives backrest and rotates, thereby the pulling backrest makes its angle generation conversion, and the operator can select the arbitrarily angled power transmission that stops according to the demand of oneself, and whole mechanism is because the self-locking meeting latched position of leading screw, when the front end of the front end of leg plate and seat board is neat mutually, finally reach the position of chair.
The beneficial effects of the utility model are: the utility model need not artificial screens, can automatically lock arbitrarily angled, and is easy to operate simple, more meets hommization; This folding seat can be implemented to arbitrarily angled adjusting by step-less adjustment and the self-locking action of leading screw except chair and two states of bed, use as chaise longue, has easy to usely, and reliability is high, the characteristics that cost is low, simple in structure.
Description of drawings
Fig. 1 is one of perspective view of the present utility model.
Fig. 2 is two of perspective view of the present utility model.
Fig. 3 is three of perspective view of the present utility model.
Fig. 4 is four of perspective view of the present utility model.
Fig. 5 is kinematic sketch of mechanism of the present utility model.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.
Such as Fig. 1-shown in Figure 5, multifunctional leisure folding seat described in the utility model comprises the base 10 that is provided with road wheel 11, horizontally disposed seat 18, the backrest 1 that is fixed on the underframe 15 of the seat left and right sides and is hinged on the seat rear side.The top of described underframe is provided with the slide rail (omit among the figure and do not draw) that stretches along fore-and-aft direction, the slideable armrest 19 that each side has of folding seat is installed in the described slide rail, the top of each handrail can a hinged gripper shoe 20, can use as tea table or computer desk during with the gripper shoe down tilt.
Each underframe respectively is connected with second connecting rod by two first connecting rods that are parallel to each other 13 and is connected with described base, article two, the upper end of connecting rod is hinged on the front portion of underframe, the lower end is hinged on the rear portion of base, first connecting rod, second connecting rod, base, underframe form a parallel-crank mechanism together, the parallel-crank mechanism on seat left side and right side is arranged symmetrically with, and wherein the top of two first connecting rods is hinged with the middle part of described backrest by third connecting rod 2 respectively;
Described seat parallel beneath is provided with a movable leg plate 6, and the left and right sides of this leg plate is installed between described two underframe by slide rail; The rear portion of seat is fixed wtih be used to the driving mechanism that drives described leg plate front and back slippage; Described driving mechanism comprises the motor 5 that is fixed on described seat rear side, and this motor drives a screw mandrel 4 along the fore-and-aft direction horizontal stretching by two meshed gears 3 and rotates, and the front end of this screw mandrel is installed in the swivel nut 4-1 of described leg plate bottom.
Described folding seat also is provided with height regulating mechanism, left side and the right side of this mechanism are arranged symmetrically with, comprise respectively the 4th connecting rod 7, the 5th connecting rod 8 and roller 9, the upper end of described the 4th connecting rod and the rear side of underframe are hinged, the front side of the upper end of the 5th connecting rod and described leg plate is hinged, the 4th connecting rod and the 5th connecting rod are hinged on respectively again in the rotating shaft of described roller, the bottom of two rollers all contacts with base, and shared same rotating shaft of two rollers is to keep the synchronous of motion, and this rotating shaft is along the left and right directions horizontal stretching of base.
In the utility model, the length of all connecting rods can be determined as required, can do corresponding adjustment.Also have wire 23, switch 22 among the figure, can use easily the running of hand control motor.
The backrest of described folding seat can be realized horizontal direction zero shift function in state conversion process, pass through first connecting rod, second connecting rod and base, underframe forms a parallel-crank mechanism together, cooperate the leg plate, seat, the 4th connecting rod and the 5th connecting rod carry out the combined restriction motion, can realize when angle of back-rest increases decline, first connecting rod in the parallel-crank mechanism, angle between second connecting rod and level ground diminishes, and then cause the decline of seat board integral position and travel forward, and the leg plate released, by the long appropriate design of backboard, realized that the backrest upper edge rises along same vertical line in the process of chair being transformed into bed, the displacement of horizontal direction is zero, counter motion when bed becomes chair, same principle also can realize horizontal direction zero shift function.