JPS60718B2 - Cylindrical instrument attachment/detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an attachment/detachment device that enables easy attachment/detachment of a cylindrical appliance, such as a fire detector mounted in a socket on a ceiling or the like.

Conventionally, fire detectors and the like installed at high places such as ceilings were removed for testing, and when they were to be re-inserted after testing, it was done by climbing up a ladder, turret, etc.

Therefore, it was dangerous and inefficient. The present invention eliminates these conventional drawbacks and aims to provide an efficient attachment/detachment device that is simple in construction and easy to handle. An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a plan view of the attachment/detachment device of the present invention, Fig. 2 is a longitudinal sectional front view thereof, and Fig. 3 is a plan view of the attachment/detachment device of the present invention.
The figure is also a side view.

In the figure, 1 is a cylindrical main body, and an operating rod 2 is attached to the lower side of the main body. Reference numeral 3 denotes a rectangular notch cut out along the circumference of the circumferential surface of the cylindrical body 1, and a chevron-shaped restraining plate 4 is attached to the cylindrical body 1 so as to cover the notch 3.

5 is a clutch roller, and the cylindrical body 1 is held within the notch 3.
The roller shaft 6 is inserted in the axial direction of the cylindrical body 1, and the roller shaft 6 is attached to the outer peripheral surface of the cylindrical body 1 so that it normally protrudes into the cylindrical body 1 no matter where the clutch roller 5 is in the notch 3. It is held between rod-shaped springs 7, 7 provided along the line, and the springs 7, 7 are held so as to be able to bend outward.

The outer circumferential surface of the clutch roller 5 is preferably made of a hard material with high frictional resistance. Reference numeral 8 denotes an auxiliary fitting that is provided so that a cylindrical device with an outer diameter that is one step smaller than the inner diameter of the cylindrical body 1 can be attached and detached, and is attached as necessary. It is.

As shown in the figure, in the auxiliary fitting 8, an arcuate metal fitting 8a is disposed in the cylindrical body 1 opposite to the loaf 5, and the cylindrical body 1
It is made to be movable up and down along grooves 9 provided in all directions of the axis. A receiving metal fitting 8b is provided on the lower inner side of the arc-shaped metal fitting 8a, and serves to hold the cylindrical instrument when it is attached or removed. Next, its operation will be explained with reference to FIG.

When the outer diameter of the cylindrical instrument is much smaller than the inner diameter of the cylindrical body 1, the auxiliary metal fitting 8 is lowered.

First, using the operating rod 2, the cylindrical main body 1 is inserted into a cylindrical device 10 (indicated by a broken line) mounted on the ceiling. At this time, the clutch roller 5 is positioned at the center of the restraining plate 4. In this way, when the clutch loft 6 is inserted into the cylindrical device 10, it can be moved largely outward against the spring 7, making insertion easier. Next, when the cylindrical body 1 is rotated clockwise (in the direction of the arrow) using the operation rod 2, the clutch roller 5 rotates in the opposite direction while pressing the cylindrical device 10', and moves to one side of the restraining plate 4 (upper part of the figure). .

However, since the restraining plate 4 is inclined from the center to both sides,
The clutch roller 5 is pressed inward by the restraining plate 4 and is inserted between it and the cylindrical device 10 in a bare state. Therefore, since the cylindrical instrument 1 is fixed by the inner surface of the cylindrical body 1 and the clutch roller 5, if the operating rod 2 is further rotated, the cylindrical instrument 1 is rotated around and removed from the socket. Next, when inserting the cylindrical instrument 10 into the socket, insert the cylindrical instrument 10 into the cylindrical body 1 in advance, apply it to the socket, and rotate in the opposite direction. Since the cylindrical device 10 is fixed at a lower position as viewed from FIG. 4, it can be easily fitted with iron.

Therefore, if the operating lever 2 is reversely rotated after iron fitting, the engagement with the clutch loft 5 will be loosened, and the clutch can be easily removed from the cylindrical body 1. Next, if the outer diameter of the cylindrical instrument is much smaller than the inner diameter of the cylindrical body 1, the auxiliary metal fitting 8 is fixed upwardly as shown by the broken line in FIG. 2, and the operation described above is performed. In this way, there is an effect that many cylindrical instruments with different outer cover can be attached and detached using one attachment and detachment device. 5, 6, and 7 are a plan view, a front view, and a side view showing other embodiments of the attachment/detachment device of the present invention when the cylindrical instrument is inclined, and the same parts are denoted by the same reference numerals. is attached.

In the figure, reference numeral 11 denotes a chevron-shaped restraining plate, and as in FIG.
It is held so that it can rotate in that direction.
In this way, even if the cylindrical instrument has a slight inclination,
Since the clutch roller 5 is inclined along the inclined surface, the circumferential surface of the cylindrical device and the circumferential surface of the clutch roller 5 come into close contact with each other, and the holding thereof becomes strong, making it easy to attach and detach the cylindrical device.

Note that the clutch roller 5 has a roller shaft 6 connected to the cylindrical body 1.
The clutch is held in place by the outer circumferential surface of the clutch and the rod-shaped spring 7, but a groove is provided on the outer circumference of the clutch low-hue 5 without providing a roller shaft.
The same effect can be achieved even if the device is held between both sides by rod-shaped springs.

As explained in detail above, according to the present invention, an efficient attachment/detachment device can be obtained with a simple configuration, since a cylindrical instrument mounted at a high place can be easily attached/detached without using a ladder or turret. .

[Brief explanation of the drawing]

1, 2, and 3 are a plan view, a vertical front view, and a side view showing one embodiment of the attachment/detachment device of the present invention, FIG. 4 is a plan view for explaining the operation thereof, and FIG. 6 and 7 are a plan view, a front view, and a side view showing other embodiments of the attachment/detachment device of the present invention. 1... Cylindrical body, 2... Operation rod, 3.
... Notch, 4 ... Suppression plate, 5 ... Clutch low-foot, 6 ... Roller shaft, 7 ...
...Spring, 8...Auxiliary metal fittings, 9...
Groove, 10...Cylindrical instrument, 11...Suppression plate. *Figure 2 Figure 3 *4 Figure 5 Bell 6 Figure Hair 7

Claims (1)

[Claims] 1. A chevron-shaped restraining plate is attached to the cylindrical body so as to cover a rectangular notch provided along the circumference of the cylindrical body, and a clutch roller is installed in the notch. The clutch roller is inserted loosely in the axial direction of the clutch, and is held by a spring so that it can freely move and rotate in the axial direction within the restraining plate. A device for attaching/detaching cylindrical instruments that protrudes. 2. A mountain-shaped restraining plate is attached to the cylindrical body so as to cover a rectangular notch provided along the circumference of the cylindrical body, and a clutch roller is installed in the notch in the axial direction of the cylindrical body. The clutch roller is loosely inserted and is held by a spring so that it can freely move and rotate in the axial direction within the restraining plate, and usually the clutch roller is made to protrude into the cylindrical body by the spring, while the roller and is an attachment/detachment device for a cylindrical instrument in which an auxiliary fitting having an arc-shaped metal fitting and a receiving metal fitting is attached in a cylindrical body on the opposite side so as to be movable up and down. 3. A mountain-shaped retaining plate is attached to the cylindrical body so that the top and bottom can be tilted so as to cover a square notch provided along the circumference of the cylindrical body, and a clutch roller is installed in the cylindrical shape within the notch. It is loosely inserted in the axial direction of the main body, and is held by a spring so that it can move freely in the axial direction within the restraining plate and rotate, and usually the clutch roller is attached to the cylindrical main body by a spring. A device for attaching and detaching cylindrical instruments that protrudes inward.