JPH083335Y2 - Pulley wire winding auxiliary structure - Google Patents

Description

[Detailed Description of the Invention] (a) Technical field to which the present invention relates The present invention relates to a pulley for stretching a wire for opening and closing a curtain by a curtain opening / closing device such as a curtain or a curtain installed in a room. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire winding auxiliary structure for a pulley that allows a wire to be wound around a pulley easily and quickly.

(B) Conventional Technology Conventionally, a pulley in a curtain opening / closing device as described above has a structure in which one set of two guide rollers are subordinated to one side thereof, and when a wire is wound around such a pulley. Put a wire inside the roller groove of one of the guide rollers, insert the wire along the pulley groove of the pulley along it, bend the tip of the wire protruding to the opposite side, and then re-tighten the tip. The guide groove is inserted along the roller groove of the other guide roller and pulled out inside the roller groove of the guide roller.

(C) Problems to be Solved by the Invention However, as described above, it is not possible to wind the wire around the pulley by inserting the wire into the groove between the pulley and the guide roller so as to mesh with each other. It is difficult to wind the wire around the pulley because of the positional relationship between the members, in which the guide roller is located at a position where the width of the wire on the pulley groove is narrowed with respect to the pulley. In particular, when trying to insert the wire once inserted in the reverse direction, the wire bends greatly.Therefore, due to the bending of the wire at that time, the wire previously inserted into the pulley groove comes off from the pulley and the guide roller. It was a lot of work, and it was a laborious task.

Therefore, the present invention takes the above-mentioned problems into consideration,
Winding wire around the pulley can be done smoothly,
An object of the present invention is to provide a wire winding auxiliary structure for a pulley that can improve workability.

(D) Means for Solving the Problem The present invention is to wind a wire along the outer peripheral surface of a pulley corresponding to the stretched portion of the wire with a gap for pressing the wire into the pulley groove of the pulley. It is characterized by a wire winding auxiliary structure of a pulley in which an auxiliary member is provided oppositely and at least one of the pulley and the winding auxiliary member is formed of an elastic material.

(E) Action In the winding assisting structure of the pulley according to the present invention, when one end side of the wire is inserted between the facing surfaces of the pulley and the winding assisting member, the insertion side of the wire is pressed by the pulley and the winding assisting member, A large contact resistance is generated in the press contact portion between the pulley groove of the pulley and the wire. As a result, when the wire is inserted or the pulley is rotated, the wire is wound along the pulley groove of the pulley, and the wire can be easily wound around the pulley groove of the pulley.

(F) Advantageous Effect of the Invention As described above, according to the present invention, the winding assisting member is provided opposite to the outer peripheral surface of the pulley with a gap for pressing the wire in contact with the outer peripheral surface of the pulley. The wire is guided along the pulley groove of the pulley by simply inserting one end of the wire between the facing surfaces of the pulley and the winding auxiliary member, and the wire never comes off the pulley as in the past. The wire can be reliably wound along the pulley groove of the pulley, and the winding work can be easily performed. In addition, when the wire is wound and when the pulley is rotated, the wire that is about to fall out of the pulley groove of the pulley is regulated by the winding auxiliary member, and it is possible to reliably prevent the wire from falling off and idling.

Moreover, since at least one of the pulley and the winding auxiliary member is made of an elastic material, the pulley can be rotated while the wire is pressed against the pulley groove of the pulley. The wire can be automatically wound by inserting the tip of the wire between the surfaces facing each other, and then rotating the pulley, and the winding work can be easily performed.

(G) Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

The drawing shows an electric curtain opening / closing device. In FIG. 3, this curtain opening / closing device 1 supports a pulling pulley 4 at the left end of a curtain rail 3 installed above a window frame 2, while A drive pulley 5 is rotatably supported on the left end portion of the wire 3, and wires 7 for opening and closing the curtains 6, 6 are stretched around the pulling pulley 4 and the drive pulley 5 in a loop shape.

The above-mentioned wire 7 is bundled and fixed at both ends of the wire 7 to the respective lead runners 8 and 8 inserted into the curtain rail 3 and connected on a loop. The same number of runners 9 ... Are inserted inside the left and right sides so that they can travel.

Then, on the outer peripheral surfaces of the tension pulley 4 and the drive pulley 5 corresponding to the stretched portion of the wire 7, as shown in FIG. 1, each winding auxiliary member 10 for guiding the winding and winding of the wire 7, 10 are provided opposite to each other, and the pulleys 4 and 5 and the winding auxiliary members 10 and 10 are separated from each other by a gap in which the wire 7 is pressed against the pulley grooves 11 of the pulleys 4 and 5.

It should be noted that there is no difference in the structure in which the winding assisting member 10 is provided in the pulling pulley 4 and the driving pulley 5 in a confronting manner.
Here, the drive pulley 5 will be described.

As shown in FIG. 1 and FIG. 2, the structure of the drive unit 12 for rotating the wire 7 wound around the drive pulley 5 is composed of an outer case 13 having a reverse concave sectional view and an elastic resin. The drive pulley 5 is formed, and the winding auxiliary member 10 made of hard resin is formed on the drive pulley 5.

One end of the curtain rail 3 is fixed to one end of the outer case 13 described above to form a space through which the wire 7 passes inside the curtain rail 3, and the winding auxiliary member 10 is attached to the outer case 13.
Is fitted from the lower side of the opening, and in that state, screws 14 ... Are screwed and fixed from the upper side of the outer case 13.

The winding assisting member 10 described above has a storage recess 15 at the rear part thereof for rotatably accommodating the drive pulley 5 described above, and a pair of guide rollers 16, 16 rotatable on the back surface at the front part thereof. Installed on.

The wire 7 is attached to the drive pulley 5 of the drive unit configured as described above.
In order to wind the wire, as shown in FIGS. 4 and 5, the antinode of the wire 7 is driven along the roller groove 17 inside the guide roller 16 and the tip toward the outside of the pulley. Pulley 5
When the wire 7 is inserted into the groove of the pulley 18, the wire 7 is pressed against the opposing surface of the drive pulley 5 and the auxiliary winding member 10, and a large contact resistance is generated in the press contact portion between the pulley groove 11 of the drive pulley 5 and the wire 7. . The mutual contact area is large and the wire 7
Since the contact resistance required to wind the wire is obtained, the drive pulley 5 is rotated by subsequently applying an inserting operation to the wire 7, and the wire 7 is moved by the rotation of the drive pulley 5 along with the pulley groove 11 of the drive pulley 5. The wire 7 can be wound around the drive pulley 5.

Further, as described above, if the drive pulley 5 is rotated with the tip of the wire 7 slightly inserted, the wire 7 is also rotated and wound with the drive pulley 5.

Therefore, the wire 7 is guided along the pulley groove 11 of the drive pulley 5 only by inserting the wire 7 between the opposing surfaces of the pulley groove 18 of the drive pulley 5 and the auxiliary winding member 10, and the wire 7 is guided as in the conventional case. Moreover, the wire 7 never comes off the drive pulley 5, the wire 7 can be reliably wound along the pulley groove 11 of the drive pulley 5, and the winding work can be easily performed. In addition, when the wire is wound and when the pulley is rotated, the wire 7 that is about to fall out of the pulley groove 11 of the drive pulley 5 is regulated by the winding auxiliary member 10, and it is possible to reliably prevent the wire 7 from falling off and idling. it can.

Further, since the drive pulley 5 is made of a resin having elasticity, the wire 7 can be rotated while being pressed against the pulley groove 11 of the drive pulley 5, and the drive pulley 5 and the winding auxiliary member 10 can be rotated. The wire 7 can be automatically wound by inserting the tip of the wire 7 between the opposing surfaces and then turning the drive pulley 5, so that the winding work can be easily performed.

Although the drive pulley 5 is made of a resin having elasticity in the above-described embodiment, the winding assisting member 10 may be made of a resin having elasticity.

[Brief description of drawings]

 The drawings show an embodiment of the present invention. Fig. 1 is a sectional view showing a winding state of a wire, Fig. 2 is an exploded perspective view, Fig. 3 is a front view showing a curtain opening / closing device, and Fig. 4 is a wire. Fig. 5 is a plan view showing a winding process of Fig. 5, and Fig. 5 is an enlarged vertical sectional view showing a winding state of the wire. 1 ... Curtain opening / closing device, 4 ... Pulling pulley 5 ... Drive pulley, 6 ... Curtain 7 ... Wire, 10 ... Winding auxiliary member 11 ... Pulley groove

Claims (1)

[Scope of utility model registration request] 1. A pulley of a curtain opening and closing device for opening and closing a curtain fixed to one end side of a wire, which is wound around a wire stretched in a loop shape, the pulley corresponding to the stretched part of the wire. A winding auxiliary member is provided along the outer peripheral surface of the pulley so as to face the pulley groove of the pulley with a gap where the wire is pressed against the pulley groove, and at least one of the pulley and the winding auxiliary member is formed of an elastic material. Pulley wire winding auxiliary structure.