JPH0449630Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of the power switch of a so-called clam shell type copying machine. In particular, the power switch is automatically activated when the upper body of the copying machine is opened relative to the lower body. It concerns a safe power switch that can be turned off.

Prior Art The power switch of conventional copying machines is often provided with a seesaw switch 3 on the side of the copying machine 1, as shown in FIG. 5. Such seesaw switches are commercially available, so they are inexpensive and , it has the advantage of being compact.

Problems with the Prior Art However, as shown by the two-dot chain line in FIG.
In the case of a so-called clam shell type copying machine which has a structure that can be opened, even if the upper body 1b is opened with the see-saw switch 3 in the on state, the power remains on, creating various dangers.

Purpose of the invention Therefore, the purpose of the present invention is to avoid danger by automatically turning off the power switch when the upper body of a clamshell type copying machine is opened, for example, to remove a jam. It is an object of the present invention to provide a power switch for a copying machine that can perform the following functions.

Structure of the invention The main means adopted by the invention in order to achieve the above object is that in the power switch of a clamshell copying machine in which the upper body can be opened and closed relative to the lower body, a cantilevered power switch is installed on the upper body side. A leaf spring is supported in a position-adjustable manner, and a notch is provided on the support side of the leaf spring, and a swingable switch operation piece that can be operated from the outside is provided so that this operating end can be freely connected to the support side of the leaf spring. When the upper body is closed to the lower body side, the upper body is always in contact with the free end side of the leaf spring, and is indirectly pressed by the switch operation piece through this leaf spring to operate. This is a power switch for a clamshell type copying machine in which a switch is provided and the leaf spring is separated from the switch when the upper body is opened.

Operation When the upper body is opened for maintenance such as removing jams, the leaf spring separates from the switch, and even if the switch operation piece is swung to the on side, the switch will no longer operate, and the upper body will no longer operate. This avoids the danger of the power being turned on without leaving it on. on the other hand,
In normal use with the upper body closed, turning the switch operation piece on will turn the switch on, and turning it off will turn the switch off.

Embodiments Next, embodiments embodying the present invention will be described with reference to FIGS. 1 and 2 to provide an understanding of the present invention.

Here, FIG. 1 is a perspective view of an entire clamshell type copying machine equipped with a power switch according to an embodiment of the present invention, and FIG. 2 is a partial cross-section of a power switch part that can be used in the clamshell type copying machine. FIG.

However, elements common to those shown in FIG. 5 will be described using the same reference numerals.

Note that the following examples are merely examples embodying the present invention, and are not intended to limit the technical scope of the present invention.

In this embodiment, a small window 4 is formed in the upper main body 1b, and a switch lever 5 is inserted into this small window 4. As shown in FIG. 2, the switch lever 5 is swingable within the small window 4 about a pin 8 implanted in a mounting wall 7 that projects inward from the side wall 6 of the upper body 1b. In addition, a tension spring 11 is installed between the pin 9 installed in the middle of the switch lever 5 and the pin 10 installed in the mounting wall 7, so that the switch lever 5 has a horizontal dead point. It becomes stable in a position where it is swung up and down as a boundary. That is, the pins 8, 9,
All of the pins 10 are arranged on a horizontal plane, and the pin 8 is located between the pins 9 and 10.

An L-shaped leaf spring 13 having an elongated hole 12 is fixed to the mounting wall 7 so that its mounting position can be changed in the vertical direction by the length of the elongated hole 12. The operating end 5a of the switch lever 5 faces the horizontal portion 13a of the leaf spring 13. The operating end 3b of the power switch 3a is always in contact with the lower surface of the end of the horizontal portion 13a of the leaf spring 13. however,
When the switch lever 5 is rotated clockwise as shown in FIG. 2 and its operating end 5a pushes the horizontal portion 13a of the leaf spring 13, the operating end 3b is operated and the power switch 3a is turned on. Become.

A notch 14 is formed in the bent portion of the leaf spring 13 so that the rigidity in this example is reduced so that the horizontal portion 3a is lowered with a slight force and the power switch 3a is turned on. Above power switch 3a
is attached to the lower body 1a side, and the upper body 1b
When the switch lever 5 and the leaf spring 13 are opened upward, the switch lever 5 and the leaf spring 13 rise upward together with the upper body 1b and move away from the power switch 3a.

In the embodiment described above, when the upper body 1b is opened as shown by the two-dot chain line in FIG. Even when the power switch 3a has been turned on until now, the power is turned off the moment the upper body 1b is opened, and even if the switch lever 5 is accidentally operated to the on side, the power will not be turned on.
Danger in the open state of the upper body 1b is avoided.

Furthermore, when the open upper body 1b is closed to the position shown by the solid line in FIG. When the power switch 3a hits, the power switch 3a is automatically turned on. In addition, when the upper main body 1b is open,
The switch lever 5 is rotated counterclockwise in FIG.
That is, when the power switch 3a is turned to the off state, the power switch 3a can maintain the off state even if the upper main body 1b is closed.

In addition, in this embodiment, as described above, the leaf spring 1
Since the horizontal portion 13a of the power switch 3 is always set through the elongated hole 12 at a position in contact with the operating end 3b of the power switch 3a, the on/off state of the power switch 3a can be controlled by just slightly moving the switch lever 5. This makes it possible to reduce the installation space for the switch.

In order to reduce such movement of the switch lever 5, the following measures have been taken in this embodiment.

That is, in this embodiment, the switch lever 5 is located between the power switch 3a and the mounting wall 7 or the bent portion of the leaf spring 13, and by slightly moving the switch lever 5, the end of the horizontal portion 13a of the leaf spring 13 is moved. This allows for a large amount of movement for the switch, allowing reliable switch operation.

On the other hand, as shown in Figure 4, for example,
The switch lever 5 is placed in contact with the end of the horizontal portion 13a of the leaf spring 13, and the switch lever 5 and the
When the power switch 3a is provided between the bent portion of the leaf spring 13, the movement of the horizontal portion 13a of the leaf spring 13 to turn on and off the power switch 3a must be large, and therefore the switch The rotation angle of the lever 5 increases, and as shown in FIG. 3, the rotation angle .theta. of the switch lever 5 increases, resulting in an uneconomical use of the installation space and operation space for the switch.

Effects of the Invention As described above, the present invention provides a power switch for a clamshell copying machine in which the upper body can be opened and closed relative to the lower body, and a leaf spring is installed on the upper body side in a cantilevered manner so that the position can be adjusted. A notch is provided on the support side of the leaf spring, and a swingable switch operation piece that is operated from the outside is provided so that the operating end is opposed between the support side and the free end side of the leaf spring. and a switch is provided on the lower body side that is in constant contact with the free end of the leaf spring when the upper body is closed and is operated by being indirectly pressed by the switch operating piece through the leaf spring, Since this is a power switch for a clamshell type copying machine characterized in that the leaf spring moves away from the switch when opened, the power switch is not turned on when the upper body of the clamshell type copying machine is open. This avoids the danger of turning on the power with the upper body open. Furthermore, with the switch structure described above, it is possible to perform on/off operations with a small amount of operating force, and the associated swing angle of the switch operation piece is reduced, making it possible to make the installation space more compact. becomes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an entire clamshell copying machine equipped with a power switch according to an embodiment of the present invention, and FIG. 2 is a perspective view including a partial cross section of the power switch that can be used in the clamshell copying machine. 3 is a perspective view of the entire copying machine for explaining the effects of an embodiment of the present invention, FIG. 4 is a perspective view showing the power switch in the copying machine shown in FIG. 3, and FIG. 5 is a conventional 1 is a perspective view showing a clamshell type copying machine. Explanation of symbols, 4... Small window, 5... Switch lever, 6... Side wall, 7... Mounting wall, 11... Tension spring, 13... Leaf spring, 3a... Power switch,
14... Notch.

Claims (1)

[Scope of Claim for Utility Model Registration] A power switch for a clamshell copying machine in which the upper body can be opened and closed relative to the lower body, in which a leaf spring is supported on the upper body side in a cantilevered manner so that its position can be adjusted. A notch is provided on the support part side, and a swingable switch operating piece that is operated from the outside is provided, and the operating end of the switch is placed opposite between the support part side and the free end side of the leaf spring. a switch that is in constant contact with the free end of the leaf spring when the upper body is closed on the side and is operated by being indirectly pressed by the switch operation piece through the leaf spring;
A power switch for a clamshell copying machine, characterized in that the leaf spring moves away from the switch when the upper body is opened.