JPH0542237Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a connecting device for opening and closing shafts housed longitudinally in head boxes adjacent to each other in a fold-up curtain or a horizontal blind.

[Prior Art] Conventionally, in horizontal blinds for bay windows, shafts for opening and closing the slats of adjacent horizontal blinds have been connected to each other through flexible shafts or through gears. . However, such a conventional coupling device has a problem in that rotation cannot be sufficiently transmitted when adjacent horizontal blinds are bent significantly. The present applicant previously filed Utility Application No. 116003 (1983) with the aim of improving these drawbacks.
-32394).

[Problems to be solved by the invention] Conventionally, there has been a problem in not only adjacent horizontal blinds but also adjacent raised curtains that rotation cannot be sufficiently transmitted if the connecting portion is bent significantly.

The present invention solves the above problems and allows the connecting parts of not only the adjacent horizontal blinds but also the adjacent pull-up curtains to be bent significantly, and also to fully utilize the rotational force of the shaft for opening and closing the slats and curtains. It is an object of the present invention to provide a shaft coupling device that can transmit.

[Means for Solving the Problems] In order to solve the above problems and achieve the object of the invention, the shaft coupling device according to the present invention is characterized by being configured as follows. In other words, a universal joint is connected to the end of a shaft for opening and closing curtains or horizontal blinds stored longitudinally in adjacent head boxes, and three universals rotatably support the universal joint. It has a case, a control plate part provided at the bottom of each adjacent universal case and cut out from 0 degrees to a maximum of 22.5 degrees, and a plurality of mutually meshing spur gear parts provided at the end of each universal case. , characterized in that the central shaft of the spur gear portion is provided protrudingly, and two connecting members are provided that rotatably fit and rotatably connect the central shaft.

[Example] The present invention will be explained in detail below using an example shown in the drawings. FIG. 1 is a plan view showing the main parts of the connecting member;
FIG. 2 is a front view of the first embodiment, and FIG. 3 is a reference diagram showing the state of use. Here, 1 is a universal joint, 1
1 is a shaft end insertion hole, 2 is a universal case, 3 is a control plate portion, 4 is a connecting member, 5 is a spur gear portion, 6 is a winding drum, 72 is a shaft, and 74 is a long hole.

In each of the embodiments, two sets of connecting members are provided. The connecting member includes a universal joint 1, a universal case 2, a control plate portion 3, and a connecting member 4. The universal joint 1 is connected to the ends of shafts for opening and closing that are housed longitudinally in mutually adjacent head boxes. The end insertion hole of the shaft is indicated by reference numeral 11. The shaft includes not only a shaft for opening and closing a horizontal blind but also a shaft for opening and closing a pull-up curtain.

The universal case 2 rotatably supports the universal joint 1. Since the universal cases 2 rotatably support both sides of the universal joint 1, two universal cases 2 are provided for each universal joint.

Each universal case 2 is provided with a control plate portion 3, and each of the control plate portions 3 has a
It is notched up to 22.5 degrees. As shown in FIG. 2, when the upper parts 31 of the control plate parts 3 adjacent to each other contact, the angle θ is 0 degrees, and when the lower parts 32 of the control plate parts 3 adjacent to each other contact, the angle θ is rotated to a maximum of 22.5 degrees. move. In this way, the control plate portion 3 limits rotation within the range from 0 degrees to 22.5 degrees. Therefore, the universal joint 1 is not bent significantly at just one place, and rotation is transmitted well.

The connecting member 4 rotatably connects the universal cases 2 adjacent to each other.

In each of the embodiments, two sets of connecting members are provided in which the universal joint 1, the universal case 2, the control plate portion 3, and the connecting member 4 are provided as described above. Furthermore, in Universal Case 2,
A plurality of spur gear portions 5 that mesh with each other are provided. FIGS. 1 and 2 are examples in which spur gear portions 5 are provided in mutually adjacent universal cases 2. As shown in FIG.

As shown in FIG. 1, when the hoisting drum 6 is disposed between the two sets of connecting members, the shaft for opening and closing not only the horizontal blind but also the pull-up curtain can be used. It can be rotated by a hoisting drum 6. The rotation of the winding drum 6 makes it easy and reliable to open and close horizontal blinds and pull up curtains.

In the embodiment shown in FIG.
are connected by the central axis of the spur gear portion 5, and the connecting member 4
Arms 71 and 73 are attached to each of them, a shaft 72 is fixed to one arm 71, and a long hole 74 in which the shaft 72 slides is provided in the other arm 73. Therefore, when the connecting member 4 of one connecting member is bent, the connecting member 4 of the other connecting member is bent by the action of the arm.
The joints 1 are also bent at equal angles (see Fig. 3), and each universal joint 1 is not bent significantly at just one place, resulting in good rotation transmission.

[Effects of the invention] Since the shaft connecting device according to the present invention is configured as described above, it is possible to greatly bend the connecting portions of not only the adjacent horizontal blinds but also the adjacent raised curtains. This has the effect that the rotational force of the shaft for opening and closing the curtain can be sufficiently transmitted.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view showing the main parts of the connecting member, FIG. 2 is a front view,
FIG. 3 is a reference diagram showing the state of use. DESCRIPTION OF SYMBOLS 1... Universal joint, 11... Shaft end insertion hole, 2... Universal case, 3... Control plate part, 4... Connection member, 5... Spur gear part, 6... Winding drum, 71, 73...arm, 72...
Shaft, 74... long hole.

Claims (1)

[Claims for Utility Model Registration] (1) A universal joint that is connected to the end of a shaft for opening and closing curtains or horizontal blinds that are housed longitudinally in adjacent head boxes, and that the universal joint is rotatable. 3 pivoted on
A control plate section provided at the bottom of each adjacent universal case and cut out from 0 degrees to a maximum of 22.5 degrees, and a plurality of mutually meshing spur gear sections provided at the end of each universal case. It has a central shaft of the spur gear part that projects, and two sets of connecting members that rotatably fit and rotatably connect the central shaft, and each of the connecting members has an arm. A shaft coupling device characterized in that the universal cases are bent in conjunction with each other by rotatably engaging the end portions of the arms. (2) The shaft coupling device according to claim 1, which is a registered utility model, characterized in that a hoisting drum is disposed between two sets of coupling members. (3) Connecting members that rotatably connect mutually adjacent universal cases are connected at the center shafts of adjacent spur gear parts, and an arm is attached to each of the connecting members, and a shaft is fixed to the end of one arm. A shaft coupling device according to any one of claims 1 and 2, wherein the other arm end is provided with an elongated hole through which the shaft slides.