JPH0738542Y2 - Seat opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a seat opening / closing device used for an awning terrace, and more particularly to a pulling part at the tip of a sheet such as canvas.

[Conventional technology]

This kind of seat opening and closing device is placed under the eaves of the house,
By extending or winding a canvas as a sheet in a space surrounded by both side frames and a front frame, an effect such as a shade and a rain shade is exhibited. In this case, the side frame extends forward from the eaves with a downward slope of about 10 degrees, and the opening / closing device includes a winding shaft driven by a motor. When the canvas is pulled out from the take-up shaft by the drive of the motor or when the canvas is taken up by the take-up shaft, the rod-shaped pull tabs provided at the tip of the canvas move on both sides along the side frames. Be lifted up and down.

However, such a sheet opening / closing device has a problem in that when the canvas is moved in and out of the winding shaft, the canvas sags and laterally shifts, so that it cannot be evenly moved in the left and right directions. Therefore, by connecting a wire to the pulling part and pulling the wire by pulling the wire, the canvas is taken up by the take-up shaft while always applying a tensile force to the canvas.
It is designed so that it can be withdrawn. However, due to the local expansion and contraction of the canvas caused by long-term use etc., even if the canvas is stretched and wound while the pull tab is kept parallel to the axis of the winding shaft, the slack on one side May occur. Therefore, the pull tab provided at the top of the canvas is composed of a tubular bottom and slide units slidably provided at both ends of this bottom. It is configured so that it can be slid on to alleviate the slack when extending and winding the canvas.

To explain in detail the pull tab portion in this conventional seat opening / closing device, a tubular bottom, and a pair of slide units for vertically moving the side frame and slidingly guiding the bottom in a direction orthogonal to the moving direction thereof, It consists of a bracket that is equipped with a pulley that guides the wire and is fixed to the openings at both ends of the bottom, and the bottom between both slide units slides left and right against the left and right shifts when winding the canvas. By moving, the slack that occurs when the canvas is rolled up or spread is alleviated.

[Problems to be solved by the device]

However, in the handle portion of the above-described conventional seat opening / closing device, since the fixing means to the bottom of the bracket provided with the pulley is performed by screws or rivets, these screws and the like appear on the bottom surface and are unattractive. There is a drawback that.

In addition, such a fixing method using a screw or the like has a problem in that a lot of processing man-hours such as forming a screw hole in the bottom or the bracket are required, and a fixing work using the screw or the like is very complicated.

[Purpose of device]

Therefore, the present invention was made based on the above circumstances,
The structure of the pull tab that moves to the left or right when a sheet such as canvas expands or contracts locally and causes slack,
An object of the present invention is to provide a seat opening / closing device that can be easily manufactured without using screws and the like and that does not spoil the appearance.

[Means for Solving the Problems] Next, means for achieving the above-mentioned object will be described with reference to FIGS. 1 to 4 corresponding to the embodiment.

According to the seat opening / closing device of the present invention, the seat is wound around a rotatable winding shaft provided between the base ends of a pair of side frames extending in parallel with each other, and the rotation of the winding shaft is performed. ,
In a sheet opening / closing device that extends or winds the sheet by elevating and lowering a pulling part that is provided at the sheet tip and both ends are guided by the both side frames, a bottom fixed to the sheet tip and both sides of the sheet. A wire take-up reel disposed at both ends of the take-up shaft, a pulley rotatably provided at the tip of each side frame, guide pulleys disposed at both ends of the bottom, Tension is applied between both wire take-up reels, and the wires are respectively wound around the pulleys and the guide pulleys, a mount pivotally supporting the guide pulleys, and a protrusion formed on the mount, The nail | claw which contact | abuts to the opening edge of the said both ends of the bottom, It is characterized by the above-mentioned.

[Action]

When the sheet (9) is pulled out from the winding shaft (3) or when the sheet (9) is wound around the winding shaft (3), the wire (22) is connected to the pulleys (21, 21) and the guide pulley (19, It is pulled out from one of the wire take-up reels (6, 7) via the (19) and wound on the other, but the tension between the wire take-up reels (6, 7) is increased by the action of the twist spring (8). I work for (22). For this reason, the sheet (9) is wound evenly on the left and right without slackening,
And extension can be realized. In addition, if the seat (9) expands or contracts unevenly due to long-term use, the guide pulley (19,1)
Although the tension applied to 9) is unbalanced left and right,
At this time, the bottom (11) of the pull tab (10) slides to the left and right, so that the winding and spreading of the sheet (9) is not hindered.

The tension of the wire (22) causes the claws (20) of the mounts (16, 16) that pivotally support the guide pulleys (19, 19) to contact both opening edges (11c) of the bottom (11).

〔Example〕

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. In the seat opening / closing device according to the present invention, as shown in FIG. 1, the winding portion a is installed under the eaves of the house b.
A pair of left and right side frames from under the eaves toward the front edge of the terrace c
For example, d and d are extended with a downward slope of about 10 degrees, and a front frame e is provided between the tips. Further, a pillar f is erected on the front edge of the terrace c to support the front portions of the side frames d.

As shown in FIG. 2, the winding portion a has a drive shaft of a motor 2 supported by a support bracket 1 of one side frame d, and one end portion of a winding shaft 3 attached to the drive shaft and is coaxial with the drive shaft. The driven shaft 4 rotatably supported on the other end of the winding shaft 3 is rotatably supported by the bearing 5 provided on the support bracket 1'of the other side frame d. A wire take-up reel 6 is provided on one end of the take-up shaft 3 on the motor 2 side, and a wire take-up reel 7 is provided on the driven shaft 4 at the other end. A twisted coil spring 8 is arranged inside the winding shaft 3 so as to surround the driven shaft 4, one end of the twisted coil spring 8 is fixed to the driven shaft 4, and the other end is fixed to the winding shaft 3. It is fixed to the inner bracket 3a.

The winding shaft 3 has a canvas 9 as a sheet.
Is wound, and the inside (base end) of the winding is fixed in a mounting groove 3b provided in the shaft 3. At the free end (tip) of the canvas 9, as shown in FIG.
Is installed. The pull tab portion 10 is generally composed of a bottom 11, a mount 16, and a slide unit 12.

First, as shown in FIG. 4, the bottom 11 has a hollow cylindrical shape with a substantially square cross section, and the mounting groove 11 formed in a part of the outer circumference.
The leading edge of the canvas 9 is fixed to a. Further, slide units 12 are fitted in the openings 11b at both ends of the bottom 11, respectively. These slide units 12 are formed in a substantially rectangular box shape with an open top surface, and have a pair of rollers 13, 13 on the outer surface of one side plate 12a in the longitudinal direction.
Is provided. The rollers 13, 13 roll on guide rails 14 provided on the side frames d, d.
Further, on the other side in the longitudinal direction of the slide unit 12,
A U-shaped bracket 15 is fitted and provided so as to cover the upper surface of the other side. Further, the facing long side plates 12b are each formed with a cutout portion 12c on the side plate 12a side.

Next, the mount 16 is composed of a pair, and a substantially Z-shaped bracket 18 is fixed on a substantially U-shaped base 17, and the base 17
A guide pulley 19 is rotatably supported between the bracket 18 and the tip 18a of the bracket 18. At both ends of the tip 18a of the bracket 18, there are formed claws 20 vertically protruding upward. The mount 16 is the long side plate 12 of the slide unit 12.
It is fitted between b and 12b, and the claws 20 come into contact with the opening edges 11c at both ends of the bottom 11.

Pulleys 21, 21 for wire return are pivotally supported at the tips of the side frames d, d so as to correspond to the guide pulleys 19, 19 pivotally supported by the mount 16. And
As shown in FIG. 3, one end is fixed to the wire take-up reel 6 described above, and the wire 22 wound several times has one pulley 21
Is wound around the guide pulleys 19 and 19 and further wound around the other wire take-up reel 7 via the other pulley 21 and fixed at the other end. At this time, the wire
22 is given an appropriate tension by the above-mentioned twisted coil spring 8.

In such a configuration, the canvas take-up shaft 3 is normally or reversely rotated by the motor 2, and when the canvas 9 is pulled out or taken up, the wire take-up reels 6 and 7 are also turned. Therefore, the pull tab 10 is moved up and down along the side frames d, d to guide the canvas 9 to be extended or to be wound around the canvas winding shaft 3. In this case, since the tension of the twist coil spring 8 is applied to the pull-out side of the canvas via the wire 22 in the pulling part 10, the canvas 9 may be slackened or laterally displaced when the canvas take-up shaft 3 is taken in and out. Instead, they come and go evenly on the left and right.

Further, the pull tab 10 is always moved up and down in a state of being parallel to the axis of the winding shaft 3, but the canvas 9 expands and contracts,
If there is slack on one side, the slide unit 12 will automatically adjust to balance the tension applied to the canvas 9.
On the other hand, the bottom 11 causes a side slip, and keeps the canvas stretched during spreading and winding.

Further, the wires 22 for generating the tension applied to the canvas 9 are used to mount the mounts 16 at both ends of the bottom 11 respectively.
The guide pulleys 19 are biased toward each other toward the center of the bottom 11, so that the claws formed on the mount 16
When the 20 is brought into contact with the opening edge 11c of the bottom 11, the mount 16 is moved to the bottom by the force generated by the tension of the wire.
Even if it is not fixed to 11 with screws etc., mount 16 is bottom 11
Will remain in the opening 11b.

The canvas 9 on the canvas winding shaft 3
Since the winding diameter of the winding shaft 9 becomes smaller as the canvas 9 is pulled out, the canvas 9 in one rotation of the winding shaft 3
The withdrawal amount of is small. Therefore, as the canvas 9 is pulled out, the wire in the wire winding reel is
The tension on 22 increases. This is convenient for stretching the canvas 9.

Further, although the twist coil spring is used as the twist spring in the above embodiment, it is needless to say that a twist spring having another structure such as a spiral twist spring may be used.

Further, in this embodiment, the twisted coil spring 8 provided between the winding shaft 3 and the wire winding reel 7 is used to apply tension to the wire 22, but the wire 22 itself is not elastic. The canvas 9 may be stretched by giving it tension.

[Effect of device]

As described above, the seat opening / closing device according to the present invention is
A wire having a tension that acts as a pulling force in the pull-out direction with respect to the pulling part of the sheet is wound around the guide pulleys of the mounts arranged at both ends of the bottom, and the tension of this wire tries to move the mounts to the center of the bottom of each mount. The force that causes the mount claws to abut the opening edge of the bottom, that is, the mount claws cause the mount to stay at both ends of the bottom, so there is no need to fix the mount to the bottom with screws or the like. Since no screws or rivets are used, there is an effect that the number of processing steps for the bottom and mount is reduced.

Further, since no screws or rivets are used, the screw heads and the like do not appear on the surface of the bottom, and the appearance is not impaired.

Further, the bottom of the mount is abutted continuously if the wire tension is present, so that there is an effect that maintenance or the like of the pull tab is simplified.

[Brief description of drawings]

FIG. 1 is a side sectional view of a seat opening / closing apparatus according to an embodiment of the present invention in a construction state, FIG. 2 is a vertical sectional front view showing a seat winding portion, and FIG. 3 is a seat opening / closing according to the same embodiment. FIG. 4 is a schematic perspective view showing the device, and FIG. 4 is an exploded perspective view of a pulling part of the seat opening / closing device according to the embodiment. 3 ... Winding shaft, 6, 7 ... Wire winding reel, 9 ... Sheet (canvas), 10 ... Handle, 11 ... Bottom, 11c ... Opening edge, 16 ... Mount, 19 ... Guide pulley, 20 ... Claw, 21 …
Pulley, 22 ... Wire, d ... Side frame.

Claims (1)

[Scope of utility model registration request] 1. A sheet is wound around a rotatable take-up shaft provided between the base ends of a pair of side frames extending in parallel with each other, and the take-up shaft is turned and the tip of the sheet is wound. In a sheet opening / closing device that extends or winds the sheet by elevating and lowering a pulling part that is provided on the both sides of the sheet and is guided by the both side frames, a bottom fixed to the leading end of the sheet and a winding on both sides of the sheet. Wire take-up reels arranged at both ends of the shaft, pulleys rotatably provided at the ends of the side frames, guide pulleys arranged on both sides of the bottom, and both wire windings. A wire is wound around each of the pulleys and the guide pulley while being loaded with tension between the take-up reels, a mount pivotally supporting the guide pulley, and a wire protruding from the mount. A seat opening / closing device, comprising: a claw formed in contact with the opening edges at both ends of the bottom.