JPS62125176A - Latch mechanism having switch function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a latch mechanism having a switch function, and is suitable for use in opening/closing covers of office equipment such as copying and facsimile machines.

Conventional technology Conventionally, in office equipment such as copying and facsimile machines,
A latch mechanism is used in the opening/closing cover so that the opening/closing cover can be opened and closed with one touch. For example, as shown in FIG. 4, in order to hold the opening/closing cover 10, which is openably and closably held on the device body 9, in the closed position, a latch part 11A added to the main body 9 and a latch part 11A attached to the opening/closing cover 10, A strike 11 inserted and fixed into the latch portion 11A
A latch mechanism consisting of B is used.

Generally, the device body 9 is provided with a switch 12 that is operated by a protrusion 14 attached to the cover 10 in order to cut off the power connection to the device when the cover 10 is opened. A protective cover 13 is covered to prevent inadvertent operation when opened.

Problems to be Solved by the Invention However, such conventional structures have the following problems.

(1) The latch section and the switch each require space.

(2) The position Am is required so that the switch 12 can be appropriately operated by the protrusion 14 of the opening/closing cover in a state where the strike IIB is inserted into the latch portion 11A to a predetermined depth and fixed.

(3) When opening the opening/closing cover, maintain 1 force and 13 points for safety.
is required, which increases the number of parts.

(4) If you want to operate the equipment with the cover open during maintenance or testing, it is necessary to insert a thin material such as a dry cloth into the gap in the protective cover 13 and keep the switch 12 pressed. , the work is troublesome.

The present invention was made in view of the above-mentioned problems, and can be installed without securing the space for each switch, does not require switch position adjustment or protective covers, and does not require force during maintenance or testing. - It is an object of the present invention to provide a latch mechanism having a switch function that can be easily operated even when opened.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a latch mechanism having a latch portion and a strike inserted into and held in the latch portion, which further includes, at the back of the latch portion, The latch is provided with a switch operated by a strike inserted into the latch.

Operation Since the present invention has the above-described structure and is equipped with a switch in the latch mechanism, no extra space is required for mounting it on the opening/closing cover, etc., and the switch can be fixed by inserting the strike into the latch part. There is no need to adjust the weight position of the switch as it is designed to be activated when the switch is turned on. Furthermore, since there is a switch at the back of the latch,
The latch part plays the role of a protective cover, so there is no need for a separate protective cover, and by inserting and fixing a member having the same shape as the strike into the latch part, the switch can be easily maintained in an activated state.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing an example in which a latch mechanism according to an embodiment of the present invention is used in an opening/closing cover of office equipment, and FIG. 2 is a side view thereof. The latch mechanism according to the present invention includes the opening/closing cover 10
It consists of a strike 1 attached to the device body 9, and a latch mechanism body 2 attached to the device body 9.

The latch mechanism main body 2 has a latch part 3 for inserting and fixing the strike 1, and a switch 4 located at the back of the latch part 3, and the switch 4 consists of a pair of contacts 5 and 6. The switch 4 is arranged at a position where when the strike 1 is inserted into the latch part 3 and the strike 1 is gripped by the latch part 3, the contact 5 is pressed against the contact 6 at the tip of the strike 1 and turned on. Note that an insulating sheet is provided on the upper surface of the contact point 5 so that there is no problem even if the contact point 5 touches the strike 1 afterward. The switch 4 is not limited to the type shown in Fig. 1, and can be modified in various ways.
When operating the power supply (8C100V) on the secondary side rather than directly opening and closing, a non-contact switch using an optical sensor as shown in FIG. 3 can also be used. This is realized and operated by inserting the strike 1 between the light emitting section 7 and the light receiving section 80. The gap between the latch parts 3 is set to a size that prevents a finger from entering in order to maintain the switch 4.

In the latch mechanism with the above configuration, the strike 1 is connected to the latch part 3.
By inserting the strike 1 into the device body 9, the strike 1 is held by the latch portion 3, and the opening/closing cover 10 is kept closed with respect to the device body 9. At the same time, the tip of the strike 1 operates the switch 4 at the back of the latch part 3, and the switch 4 is turned on. To open the openable cover 10, simply open the openable cover 1.
0 from the device body 9. As a result of this operation, the strike 1 is pulled out from the latch portion 3, and the switch 4 is turned off for automatic fishing. When opening the opening/closing cover, switch 4
is protected by a latch portion 3, so that the switch 4 will not be accidentally activated by a finger or the like.

During maintenance, testing, etc., when you want to turn on the switch with the opening/closing cover open, you can easily and reliably turn on the switch 4 by fitting a member with the same shape as the strike 1 into the latch part 3. 3, so there is no need to hold it by hand.

Effects of the Invention As is clear from the above explanation, the present invention provides a latch mechanism with a switch that is activated by the strike of the latch mechanism, so that parts are not convoluted.
It requires less installation space when installing to an opening/closing cover, etc., and can be operated reliably without the need for adjusting the switch position or circumference. Also, during maintenance or testing, a member with the same shape as the strike can be inserted. This has advantages such as being able to easily and reliably put the device into an operating state.

However, as shown in the example, if the gap in the latch part of the latch mechanism is made large enough to prevent fingers from entering, the internal switch will not be easily pressed with a finger, resulting in high safety and no need for a protective cover. It also has effects.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a latch mechanism showing an embodiment of the present invention;
FIG. 2 is a side view thereof, FIG. 3 is a sectional view of the main body of the latch mechanism showing a modified example of the switch, and FIG. 4 is a perspective view of office equipment showing an example of use of the conventional latch mechanism and switch. 1...Strike, 2...Latch mechanism body, 3...
・Latch part, 4... Switch, 5, 6... Contact, 7
... Light emitting section, 8... Light receiving section, 9... Device main body, 10
... Opening/closing cover〇 Name of agent Patent attorney Toshio Nakao and one other person Figure 1 No. θ Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) It is characterized by having a latch part, a strike that is inserted into and held by the latch part, and a switch that is disposed at the back of the latch part and is activated by the strike that is inserted into the latch part. Latch mechanism with switch function. (2) A latch mechanism having a switch function as set forth in claim 1, wherein the strike insertion gap of the latch portion is of a size that does not allow a finger to pass through.