JPS6242558Y2 - - Google Patents

Description

[Detailed description of the invention] Regarding this inventive locking mechanism for a plug-in unit, we particularly aim to provide a locking mechanism for a plug-in unit that allows the plug-in unit to be inserted and removed with a single touch, has a simple structure, and is easily manufactured. It is something.

The plug-in unit is detachably installed in the main body of the device, and therefore requires a structure that allows it to be attached and detached without the use of tools. Conventionally, a shaft was passed between the panel plate and the back plate of the plug-in unit, a knob was attached to the end of the shaft protruding from the panel plate, a screw was formed at the rear end of the shaft, and this screw was inserted into the shaft. The plug-in unit is configured so that it can be installed and removed without using tools by screwing it into a tap hole formed on the device main body side and tightening it with a knob.

However, according to this locking mechanism, the attachment and detachment operations are time consuming and troublesome because tightening and detachment are performed by turning a knob.

The object of this invention is to provide a locking mechanism for a plug-in unit that can be locked and released from the locked state with a single touch.

In this invention, an elastic tongue piece having a protrusion is provided on the surface of the case constituting the plug-in unit, and this elastic tongue piece is engaged with an engaging portion provided on the main body of the device to achieve a locked state. To release from the locked state, move the lever to elastically deform the tongue and move the protrusion formed on the tongue towards the inside of the plug-in unit case, thereby preventing the engagement between the protrusion and the engaging part. It is configured so that it can be released.

Therefore, according to this invention, the plug-in unit can be locked and released from the locked state with a single touch.

An embodiment of this invention will be described below in detail with reference to the drawings.

FIG. 1 shows the structure of the plug-in unit side of the locking mechanism according to this invention. 1 in the figure shows the case of a plug-in unit. In the figure, the bottom surface 1a of the case 1 is shown facing upward. 1b shows the front panel plate of the plug-in unit. The case 1 is made of a resin material that has some elasticity. In this example, an elastic tongue piece 2 is formed integrally with the case 1 on the bottom surface 1a of the case 1. That is, a through hole 3a is formed in the bottom surface 1a, and the tongue piece 2 is formed to protrude from the through hole 3. The tongue piece 2 extends from the rear of the case 1 toward the front along the plate surface of the bottom surface 1a, and has a protrusion 4 at its free end that projects in a direction away from the bottom surface 1a. In other words, in this example, the free end of tongue piece 2 is connected to case 1.
A case is shown in which the protrusion 4 is formed by bending the protrusion 4 toward the outside.

5 indicates a lock release lever. This lever 5 is supported at a position overlapping the tongue piece 2 so as to be movable in the direction in which the tongue piece 2 extends. In this example, panel board 1b
A case is shown in which the lever 5 is supported by a hole 6 formed in the case 1 and a pin 7 having a head planted on the rear end side of the case 1. A long hole 8 is formed in the lever 5, and by inserting a pin 7 into the long hole 8 and planting the pin 7 on the bottom surface 1a of the case 1, the lever 5 is supported so as to be movable in the front and back direction. Indicates the case where Note that the lever 5 is always biased toward the rear end side by the spring 9, and the handle 11 provided on the front end side is attached to the panel plate 1b.
is held in pressure contact with the

The lever 5 is provided with a protrusion 12 that protrudes in the direction toward the tongue piece 2, and by holding the handle 11 and pulling the lever 5 toward you, the protrusion 12 collides with the protrusion 4.
Thereby, the tongue piece 2 can be bent to bias the protrusion 4 toward the inside of the case 1.

FIG. 2 shows the state in which the case 1 of the plug-in unit is attached to the main body of the apparatus. The device main body 13 is provided with two engaging portions 14 on both sides of the lever 5 on the surface facing the bottom surface 1a of the plug-in unit. The engaging portion 14 has a slope 14a that becomes gradually lower toward the front end. On the other hand, a guide 15 is provided at a position of the apparatus main body 13 facing the upper surface of the case 1. The case 1 is inserted and removed while being restricted by the guide 1 so as not to be lifted upward.

With the above-described structure, when the case 1 of the plug-in unit is inserted into the unit mounting portion of the device main body 13, the protrusion 4 of the tongue piece 2 is attached to the main body 13 by the bending of the tongue piece 2. It climbs over the provided engaging portion 14 and engages with the rear end of the engaging portion 14, resulting in a locked state.

In this locked state, by pulling the handle 11 and pulling the lever 5 forward, the protrusion 12 provided on the lever 5 engages with the protrusion 4 of the tongue piece 2, and this engagement causes the protrusion 4 to be attached to the case 1. It can be moved inward and the protrusion 4 can be disengaged from the engagement part 14.

Therefore, according to this invention, it is possible to install and lock the plug-in unit, and to release the lock and remove the plug-in unit from the device in a so-called one-touch operation. Moreover, since the case 1 of the plug-in unit is made of a resin material and the tongue piece 2 and the protrusion 4 are made integrally with the case 1, manufacturing is easy.

Although the tongue piece 2 is formed on the bottom surface of the case 1 in the above description, it is not limited to the bottom surface, and it is also possible to form it on another surface and provide the locking mechanism on that surface.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of the main parts of this invention;
FIG. 2 is a sectional view showing the state in which the plug-in unit is locked to the main body of the apparatus. 1... Plug-in unit case, 2... Tongue piece, 4... Protrusion, 5... Lock release lever, 14
...Engagement part.

Claims (1)

[Claims for Utility Model Registration] A tongue piece with spring properties whose rear end in the direction of insertion and removal of the plug-in unit is fixed along the surface of the case of the plug-in unit; a protrusion formed on the plug-in unit and protruding in a direction away from the surface of the case; a lever that collides with the protrusion and biases the protrusion toward the inside of the case of the unit; and a device body to which the plug-in unit is mounted; an engaging portion that is provided and that engages with the front side of the protrusion formed on the tongue when the unit is inserted to lock the plug-in unit in its installed position; and an engaging portion that is suspended between the lever and the case. a spring that is tensioned and biases the lever backward; another protrusion pushed out from the lever and closely facing the rear side of the protrusion; and a front panel plate of the plug-in unit that is attached to the front end of the lever. A locking mechanism for a plug-in unit, comprising: a handle protruding forward through a hole;