JPH0345519Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a blind operating device using a hollow operating rod.

[Prior Art] A device that tilts a slat via a hollow operating rod hanging down from a top box and lifts/lowers/opens/closes a blind via a cord passing through the hollow operating rod prevents the cord from unsightly hanging down from the top box. Not only does the blind have a sleek appearance, but it also has the advantage of being able to open and close the blind and tilt the slats from one place. There was a problem that the cord tended to become fluffy and unsightly due to frictional sliding, but this problem was solved by making the member that slides on the cord made of ceramic, as disclosed in Utility Model Application No. 59-132894. It was resolved by The cord is locked by being sandwiched between a hollow cylindrical cord lock receiver and a conical cord lock, and the cord lock receiver is fixed by being screwed or glued to the lower end of the hollow operating rod. Further, in order to guide the axial sliding movement of the grip, an axial groove was provided in the cord lock receiver, and an axial protruding strip provided on the inner peripheral surface of the grip was fitted into the groove.

[Problem to be solved by the invention] When the lower end of the hollow rod and the ceramic cord lock receiver are screwed together, when the grip is turned in the direction in which the screw loosens, the hollow operating rod rotates together with the grip. There was a problem that the slats could not be tilted because the slats would slip without moving. Also, if you apply adhesive to the outer circumferential surface of the cylinder at the lower end of the hollow operating rod and insert it into the inner circumferential surface of the cylinder of the cord lock receiver, if the adhesive peels off with some type of shock, the hollow operating rod and the ceramic cord lock receiver will be damaged. Because of the relative rotation of the slats, there was a problem in that the slats could not be tilted even if the grips were turned.

The present invention was developed to solve the above problems, and its purpose is to reliably tilt the slat without causing the grip to slip even if the adhesive that fixes the hollow operating rod peels off. The goal is to provide a device that can do this.

[Means for Solving the Problems] In order to achieve the above object, the device of the present invention is designed to function as a key when the adhesive between the lower end of the hollow operating rod and the adhesive coated surface of the cord lock receiver is peeled off. The second reason is that an adhesive pool is formed.

Any adhesive reservoir may be used as long as it functions as a keyway, but V-shaped grooves in the axial direction, intermittent grooves in the circumferential direction, etc. are easy to process. Also, by forming a thread on the lower end of the hollow operating rod, forming a female thread on the cord lock receiver that fits into the male thread, and applying adhesive to the thread surface and screwing both together, the thread will fit between the ridges and valleys of the thread. Even when the adhesive is peeled off, it acts as a key and allows the two to rotate together.

The grip guide part of the cord lock receiver must be integrated with the hollow operating rod, but the engaging part with the cord lock does not need to rotate together with the hollow operating rod, so the cord lock receiver must be connected to the grip guide part and the cord lock engaging part. The grip guide part is made of synthetic resin and an adhesive pool is provided on the hollow operating rod to fix it with adhesive.Only the cord lock engaging part is made of ceramic and the grip guide part is glued and fixed without providing an adhesive pool. You may.

[Function] The lower end of the hollow operating rod of the present invention and the grip guide portion of the ceramic cord lock holder or synthetic resin cord lock holder that guides the grip are fixed via adhesive, but the application of adhesive on both An adhesive pool that acts as a keyway is formed on one or both of the surfaces, so even if the adhesive peels off,
The peeled adhesive acts as a key and causes both to rotate together. Therefore, even if the adhesive peels off,
When you turn the grip, the hollow operating rod always rotates, ensuring the tilting of the slat.

[Example] The apparatus of the present invention will be described based on an example shown in the drawings. As shown in Figure 1, head box 1
The ladder cord 14 hanging down from 0 is the slat 12
The lifting cord 13 supports the bottom rail 43, respectively. Although not shown, ladder code 1
The upper end of 4 is locked to a drum, and the drum is fixed to a rotating shaft, and the rotating shaft is connected to a hollow operating rod 15 via a gear mechanism and a hollow universal joint 11, so that the rotation of the hollow operating rod 15 causes The slat 12 tilts. The lifting cord 13 enters the hollow operating rod 15 through the hollow universal joint 11, passes between the cord lock receiver 16 and the cord lock 19 in the grip 20, and is pulled out downward. When the lift cord 13 is pulled, the bottom rail 13 rises and the blind opens. When the lift cord 13 is released, the lift cord 13 is caught between the cord lock 19 and the cord lock receiver 16 by the coil spring 17, so the bottom rail 13 stops. do. The grip 20 is attached to the coil spring 17.
When lowered against this, the space between the cord lock receiver 16 and the cord lock 19 widens, and the lifting cord 13 descends under the weight of the bottom rail 43.

The cord lock receiver 16 is made of ceramic,
An axial guide groove 21 is provided on the outer circumferential surface, and an axial protrusion 25 on the inner circumferential surface of the grip 20 is provided in the guide groove.
It fits. Therefore, when the grip 20 is rotated, the hollow operating rod 1 is moved through the cord lock receiver 16.
5 rotates, the slat 12 tilts.

The shaft hole of the cord lock receiver 16 has a stepped portion 24 in the middle.
A hollow operating rod 15 is inserted into the shaft hole 22 above the step 24, and a cord lock 19 projects into the truncated conical shaft hole 23 below the step 24. The cord lock 19 is held at the bottom of the grip 20, and the grip 20 is attached to its inner step and cord lock receiver 16.
It is always pressed upward by a coil spring 17 interposed between the upper surfaces of.

An adhesive 30 is applied between the outer peripheral surface of the lower end of the hollow operating rod 15 inserted into the shaft hole 22 and the inner peripheral surface of the shaft hole 22, and the hollow operating rod 15 and the cord lock receiver 16 are connected to each other through the adhesive. Although they are fixed together, as shown in FIG. 2, a large number of adhesive reservoirs 31 in the form of circular arc grooves extending in the circumferential direction are intermittently formed on the outer peripheral surface of the lower end of the hollow operating rod 15, and the shaft hole Eight axially extending V-shaped adhesive reservoirs 32 are formed on the inner circumferential surface of the adhesive member 22 . Even if the adhesive 30 is peeled off from both the hollow operating rod 15 and the cord lock receiver 1, the adhesive 30 acts the same as the key.
6, that is, the grip 20 always rotates together.
Therefore, when grip 20 is rotated, slat 1
2 definitely tilts.

As shown in FIG. 3, the cord lock receiver 16 is separated into a grip guide part 26 and a cord lock engaging part 27, the grip guide part 26 is made of synthetic resin, and the hollow operating rod 15 is inserted into the upper shaft hole 22. A cord lock engaging part 27 made of ceramic is fitted into the shaft hole 23 under the stepped part 24 and fixed with adhesive. An axial guide groove 21 into which the protrusion 25 of the grip 20 fits is provided on the outer peripheral surface of the grip guide portion 26.

A female thread 33 is provided in the shaft hole 22, and the hollow operating rod 15
A screw 34 is provided on the outer circumferential surface of the lower end portion of the holder, and an adhesive 30 is applied to the male screw, and the screw 34 is fitted into the female screw 33.
The hollow operating rod 15 and the grip guide portion 26 are integrated through the adhesive 30 between the male thread 34 and the female thread 33. Even if the adhesive 30 peels off, since the adhesive 30 acts like a key, the hollow operating rod 15 and the grip guide 26, that is, the grip 20,
always rotate integrally, and rotating the grip 20 reliably tilts the slat.

Cord lock engaging part 27 and grip guide part 26
It is not necessary to form an adhesive pool on the adhesive surface of the adhesive. When the adhesive between them is peeled off, the cord lock engaging portion 27 rotates relative to the grip guide portion 26, that is, the grip 20, but no problem occurs even if the cord lock engaging portion 27 rotates relative to the grip guide portion 26, that is, the grip 20.

[Effects of the invention] As described above, in the device of the present invention, the hollow operating rod is inserted into the shaft hole of the cord lock receiver that rotates together with the grip or the grip guide portion of the cord lock receiver and is fixed via adhesive. Since an adhesive pool is formed on the adhesive surface, even if
Even if the adhesive peels off, there is no risk of the grip slipping due to the key action of the peeled adhesive, which is an excellent effect not found in conventional grips.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a part of a Venetian blind equipped with a device according to an embodiment of the present invention; Fig. 2 is a perspective view showing the main parts of the hollow operating rod and cord lock receiver shown in Fig. 1; FIG. 3 is a sectional view showing the main parts of another embodiment. In the figure, 10 is a top box, 11 is a hollow universal joint, 13 is a cord, 15 is a hollow operating rod,
16 is code lock, 19 is code lock,
20 is a grip, 22 is a shaft hole (upper side), 23 is a shaft hole (lower side), 26 is a grip guide portion, 27 is a cord lock engaging portion, 30 is an adhesive, 31 and 32 are adhesive reservoir portions, and 33 is a fitting. The screws 34 each indicate a male screw.

Claims (1)

[Claims for Utility Model Registration] 1. A hollow operating rod connected to a hollow universal joint protruding from a top box, a cord lock receiver attached to the hollow operating rod, and a cord lock receiver that rotates integrally with the cord lock receiver and is slidable in the axial direction. The attached grip, the cord lock held by the grip so as to be engageable with the cord lock receiver, the cord lock inserted into the hollow operating rod from the top box through the hollow universal joint, and then inserted between the cord lock receiver and the cord lock. In the apparatus, the hollow operating rod is inserted into the shaft hole of the cord lock receiver and bonded with an adhesive, and an adhesive reservoir is formed on the adhesive surface of the hollow operating rod and the cord lock receiver. A code lock device for a blind, characterized in that the adhesive acts as a key even if it is peeled off. 2. The adhesive reservoir includes grooves extending in the circumferential direction that are intermittently provided on the outer peripheral surface of the lower end of the hollow operating rod;
A cord lock device for a blind according to claim 1, characterized in that the cord lock device comprises a groove extending in the axial direction provided in the inner peripheral surface of the shaft hole of the cord lock receiver. 3 The cord lock receiver consists of a synthetic resin grip guide part and a cord lock engaging part glued to the shaft hole on the lower side of the grip guide part, and the cord lock receiver is made of a synthetic resin grip guide part and a cord lock engaging part glued to the shaft hole on the lower side of the grip guide part. A thread is provided on the outer peripheral surface of the lower end of the hollow operating rod, a female thread is provided in the upper shaft hole of the grip guide portion to engage with the male thread, and the male thread and the female thread are provided with a thread to engage with the male thread. A cord locking device for a blind according to claim 1, characterized in that an adhesive is interposed between the cords.