JPH0643198U - Window blind coupling device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a window blind coupling device with a simple structure and excellent aesthetics. [Structure] The ends of the slat rotating shafts 2 of the left and right blinds are connected by a universal joint. The left and right case members 4 and 5 are attached to the ends of the head rail 1 to support the universal joint so that it can rotate and cannot slide in the axial direction. The left and right case members 4 and 5 are connected via a cover member 6 so as to be horizontally rotatable. An elongated hole 18 provided in the upper and lower facing plate portion 16 of one case member 4 and substantially parallel to the axis of the rotary shaft 2.
Then, the protrusion 24 provided on the upper and lower facing plate portion 22 of the other case member 5 is fitted to restrict the rotation of the case members 4 and 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bayonet blind coupling device in which a plurality of horizontal blinds attached to a bay window are coupled at headrail ends of each blind so that slats of each blind are interlocked to open and close.

[0002]

[Prior art]

 Conventionally, as a device for connecting window blinds of this type, as described in, for example, Japanese Utility Model Publication No. 2-15989, the slat rotation shaft ends of the left and right blinds are connected via a universal joint to form a universal joint. The left and right universal cases that rotatably support each are attached to the head rail ends, and the universal case is meshed with the spur gears provided on this case, and the central axes of the spur gears can be rotated by the plate. There is a universal case that regulates the rotation of the universal case.

[0003]

[Problems to be solved by the device]

 However, in such a conventional coupling device, since the universal case is engaged with the spur gears integrally provided in the case so that the universal case can rotate, the mold structure for molding the case becomes complicated and the cost is high. There is a problem that becomes. In addition, the internal structure can be seen between the left and right universal cases, which is unaesthetic.

An object of the present invention is to provide a window blind coupling device that solves the conventional problems.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a case in which left and right case members that support a universal joint rotatably and non-slidably in an axial direction are horizontally rotatably connected to each other via a cover member, and provided on one case member. A protrusion provided on the other case member is fitted into the elongated hole, and rotation of the case member is restricted by the elongated hole and the protrusion.

That is, in the window blind coupling device of the present invention, the slat rotation shaft ends of the left and right blinds are coupled via a universal joint to support the universal joint rotatably and non-slidably in the axial direction. In a bayonet window coupling device in which the left and right case members are respectively attached to the head rail ends and horizontally rotatably connected to each other, a cover member is provided in the case member to cover a gap between the left and right case members. The left and right case members are connected to the cover member so as to be horizontally rotatable relative to each other on the axis of the rotating shaft, and the upper and lower cases of one case member are placed on the side where the head rail bends with respect to the axis of the rotating shaft. The projections provided on the upper and lower facing plate parts of the other case member are fitted into the long holes that are provided in the facing plate part and are substantially parallel to the axis of the rotating shaft, and The rotation of the case member is restricted so that the universal joint bends according to the bending angle of the left and right head rails.

[0007]

[Action]

 When the left and right head rails are bent and connected, the case member does not rotate arbitrarily, but the universal joint is restricted from bending so that it bends according to the bending angle of the head rail, and the universal joint slides in the axial direction. It does not move and the joint itself does not have excessive force. Also, the universal joint cannot be seen from the outside due to the cover member between the case members.

[0008]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. In the drawings, 1 is a blind head rail, 2 is a slat rotation shaft provided in the head rail 1 along the longitudinal direction, 3 is a universal joint for connecting end portions of the left and right adjacent rotation shafts 2, Reference numeral 4 is a case member attached to one of the left and right head rails 1, 5 is a case member attached to the other, and 6 is a cover member for connecting the case members 4 and 5.

As shown in FIG. 8, the universal joint 3 may have a structure similar to the conventional structure in which the joint bodies 9 and 10 are connected to both sides of the intermediate joint 7 via the connecting bodies 8. One joint body 9 is rotatably fitted and supported by the bearing portion 15 of the one case member 4 as shown in FIGS. 3 and 4, and is connected to the end portion of the adjacent one rotating shaft 2. The other joint body 10 is rotatably fitted and supported by the bearing portion 20 of the other case member 5 as shown in FIGS. 3 and 4, and is attached to the joint body 10 via a non-rotatable and detachable guide member 11. It is connected to the end of the other rotating shaft 2.

As described above, the universal joint 3 is configured such that the joint bodies 9 and 10 are connected to the ends of the rotary shaft 2, respectively, and the rotation of one rotary shaft 2 is transmitted to the other rotary shaft 2. In addition, 12 is a fixing ring and 13 is a fixing screw for connecting and fixing the universal joint 3 and the rotary shaft 2.

One of the case members 4 is integrally formed with a joint portion 14 that is connected to the cover member 6 and a bearing portion 15 that is fitted and attached to the end portion of the head rail 1 to support the universal joint 3. . The joint portion 14 has an upper and lower facing plate portion 16, and a connecting hole 17 located on the axis of the rotating shaft 2 is bored in the facing plate portion 16. Further, as shown in FIG. 1, the opposite edge of the facing plate portion 16 to the bearing portion 15 is obliquely intersected with the axis of the rotating shaft 2, and the shaft is located at a position deviated from the axis of the rotating shaft 2. A slot 18 is provided which is substantially parallel to the heart.

The other case member 5 has a joint portion 19 connected to the cover member 6 and a bearing portion 20 supporting the universal joint 3 formed integrally, and is fitted and attached to the end portion of the head rail 1. It has a bearing base material 21 that is pivotally and detachably fitted into the bearing portion 20. The joint portion 19 has an upper and lower facing plate portion 22, and a connecting hole 23 located on the axis of the rotating shaft 2 is bored in the facing plate portion 22. Further, the edge of the opposed plate portion 22 opposite to the bearing portion 20 is convexly curved as shown in FIG. 8, and the protrusion 24 fitted into the elongated hole 18 is provided at a position deviated from the axial center of the rotary shaft 2. Has been.

As shown in FIG. 8, the cover member 6 has a substantially short tubular shape in which upper and lower facing surfaces are connected to each other, and two protrusions 25 are provided on the outer sides of the upper and lower facing surfaces at positions on the axis of the rotary shaft 2. There is. The cover member 6 is inserted in the middle of the case members 4 and 5 as shown in FIGS. 1 and 2 to cover the gap between the case members 4 and 5, and the projection 25 as shown in FIG. It is pivotally attached by being inserted into 17 and 23.

The case members 4 and 5 and the cover member 6 are connected to each other by the projection 25 and the connecting holes 17 and 23 so as to be horizontally rotatable, and the case members 4 and 5 are connected almost straight as shown in FIG. As shown in FIG. 5, it is connected so as to be rotatable about 90 degrees from the open state. Further, the rotation of the case members 4 and 5 is restricted by the elongated holes 18 of the case members 4 and 5 and the projection 24.

That is, when the case members 4 and 5 are rotated, in other words, when the left and right head rails 1 are bent and connected, the protrusions are formed on the bending side of the head rail 1 with respect to the axis of the rotary shaft 2. 24 is guided by the long hole 18 to restrict the rotation of the case members 4 and 5, the universal joint 3 is bent in accordance with the bending angle of the left and right head rails 1, and an excessive force is not applied to the joint 3. , The joint 3 is designed so as not to slide in the axial direction.

[0016]

[Effect of device]

 As described in detail above, in the window blind coupling device of the present invention, the left and right case members are horizontally rotatably connected to each other through the cover member, and the head rail is bent with respect to the axis of the rotating shaft. The projection of the other case member is fitted into the long hole of one case member, and the rotation of the case member is restricted by the long hole and the projection. It is possible to reduce the cost by simplifying the member structure without requiring.

Further, since the cover member that covers the gap between the left and right case members is provided inside the case member, it is possible to improve the appearance without seeing the internal structure from the outside.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the coupling device of the present invention.

2 is a front view of the coupling device of FIG. 1. FIG.

3 is a cross-sectional view of the coupling device of FIG.

4 is a vertical cross-sectional view of the coupling device of FIG.

5 is a plan view showing a state where the coupling device of FIG. 1 is rotated by approximately 90 degrees.

6 is a cross-sectional view of the coupling device of FIG.

FIG. 7 is an exploded perspective view showing a connecting state of the connecting device of the present invention.

FIG. 8 is a component exploded view showing an embodiment of the coupling device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 head rail 2 rotating shaft 3 universal joint 4,5 case member 6 cover member 16,22 facing plate part 17,23 connecting hole 18 long hole 24,25 protrusion

Claims (1)

[Scope of utility model registration request] 1. Slat rotation shaft ends of the left and right blinds are connected via a universal joint, and left and right case members that support the universal joint rotatably and axially non-slidably are attached to the head rail ends. In the window blind coupling device that is horizontally rotatably coupled to each other, a cover member that covers a gap between the left and right case members is provided in the case member, and the left and right case members have an axis of a rotation shaft with respect to the cover member. Slots that are horizontally rotatably connected to each other and that are substantially parallel to the axis of the rotary shaft provided on the upper and lower facing plate portions of one case member on the side where the head rail bends with respect to the axis of the rotary shaft. A protrusion provided on the upper and lower opposing plate portions of the other case member is fitted into the upper side of the other case member, and the rotation of the case member is restricted by the elongated hole and the protrusion to bend the left and right head rails. A window blind coupling device with a universal joint bent to match the angle.