JPH08285183A - Interlock switch device - Google Patents

Abstract

PURPOSE: To provide an interlock switch device which does not become a hindrance to an operator and whose switch can be operated since an operation member of the switch reliably contacts with a switch part. CONSTITUTION: An operation member 40 arranged on a door 13 of a copying machine or the like is composed of an elastic base part 41 whose part is composed of an elastic body and an operation part 43 to contact with a switch part 20, and the operation part 43 can rotate by the elastic base part 41. An inner cover 30 having guide parts 35 is arranged between it and a door 13 of the switch part 20, and when the door 13 is closed, the operation member 40 is guided by the guide parts 35, and is reliably contacted with the switch part 35. When the door 13 is opened, even if an operator contacts with the operation member 40, since the operation member 40 copes with it since the elastic base part 41 rotates, a contact part with the operator or the operation member 40 is not damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlock switch device for operating an interlock switch for detecting opening / closing of a door by a switch operating member on a door side of an image forming apparatus such as an electrostatographic copying machine, a printer or a facsimile.

[0002]

2. Description of the Related Art An interlock switch mechanism which is normally used is, as shown in FIG.
The switch operating member 8 is provided inside the switch and the switch section 2 is provided inside the machine such as a copying machine. When the cover 3 is closed, the switch operating member 8 presses the switch pressing member 5 of the switch section 2. And activate the switch mechanism. In this way, it is arranged on the main body side of the image forming apparatus such as the electrostatic photocopier, printer, and facsimile (switch section).
Since the switch operating member is traveling from the door surface, the operator touches the operating member and damages the operating member, or the switch operating unit including the switch operating unit arranged on the door side, or the clothing of the operator. There was an inconvenience such as damage to. Therefore, Japanese Patent Laid-Open No. 57-133458 discloses a structure for avoiding damage to the device or clothes by dropping the switch operating member from the door surface when an excessive external force is applied to the operating member. Further, Japanese Utility Model Laid-Open No. 3-94549 discloses a configuration in which a switch operation member is detachably arranged on a door for maintenance.

[0003]

However, in the case of the above-mentioned prior art, no measure is taken against an external force from a direction other than the dropping direction or the attaching / detaching direction of the switch operating member, and it is not the dropping direction or the attaching / detaching direction. When a force is applied to the switch operating member, there is a fear that the switch operating member may be damaged, the worker's clothes may be damaged, or the human body may be damaged. Therefore, the present invention provides an interlock switch device in which the switch operation member operates the switch operation portion when the door is opened, without interfering with the operator, and when the door is closed, the switch operation can be surely performed. To do.

[0004]

An interlock switch device comprising a switch according to the present invention and an operating member for actuating the switch has a distal end portion of the operating member rotatably formed and a switch and an operating member. Basically, there is provided a structure in which a guide member for guiding the distal end portion of the operating member is arranged between the guide members.

Further, the operation member has a structure in which at least a part of the member is made of an elastic body and is deformable. The interlock switch device is composed of a switch arranged inside the machine body and an operation member arranged on a door arranged to be openable and closable in the machine body, and the switch is an interlock switch that detects opening and closing of the door, The guide member is arranged on the inner cover that covers the switch and is provided on the body, and the operation member is, for example, a position that is housed inside the door in parallel with the door surface by a link mechanism and a position that is perpendicular to the door surface. When the door is closed, it becomes a position vertical to the door surface and is guided by the guide member to operate the switch, and when the door is opened, it rotates to a position parallel to the door surface. It has a configuration.

[0006]

When the door is closed, the tip of the operating member is guided by the guide member and comes into contact with the switch when the door is closed. And activate the switch. The distal end portion of the operation member is rotatable, so that the operation member can surely enter the guide member. Further, when the switch actuation operation is completed, the operation member has flexibility due to the elastic body, so that the operation member can respond flexibly even if an external force is applied. Further, the operation member rotated by the link mechanism is housed on the inner surface of the door when the door is opened.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. Embodiment 1 FIG. 1 is an overall top view of a copying machine, FIG. 2 is a partially enlarged view of a switch device, and FIG. 3 is an operation explanatory view of the switch device. A door 13 is provided on the front surface (operation side) of the copying machine 10 so as to be openable and closable via an inner cover 30. A switch unit 20 is arranged inside the copying machine 10, and a door 1 is installed in a door 13.
A switch operation member 40 for operating the switch unit 20 when the switch 3 is closed is attached. The operation member 40 is the door 13
It is a rod-shaped body that hangs down on the inner side surface of the, and is composed of a mounting base portion 41 formed of an elastic body and an operation portion 43 formed of a rigid body. The mounting base 41 is fixed to the back surface of the door 13, and the mounting base 4
Due to the elasticity of No. 1, the operation portion 43 is rotatable about the mounting base portion 41 as a fulcrum. The switch unit 20 has a main body on which the switch button 23 is arranged and a pressing member 25 for pressing the switch button 23. The inner cover 30 has a guide hole 33 of the operation member 40 at a position corresponding to the switch section 20.
And a guide portion 35 in which the inner cover 30 is bent.
To form.

The copying machine 10 thus constructed has a door 13
When the door is closed, the operating member 40 is provided inside the door 13.
Is guided by the guide part 35 of the inner cover 30 and inserted into the machine, and presses the pressing member 25 of the switch part 20.
The pressing member 25 presses the switch button 23 of the switch section 20 to turn on the switch of the copying machine. Then, when the door 13 is opened for maintenance or the like, the operation member 40 is guided by the guide portion 35 and escapes from the inner cover 30. The switch button 23 of the switch section 20 releases the pressing of the pressing member 25 and turns off the switch. The operation member 40 disposed on the door 13 has its mounting base 41 made of an elastic body, so that even if an external force is applied to the operation member from any direction, the elastic portion of the mounting base 41 bends and external force is applied. Absorb. Also,
When the door 13 is closed, even if the mounting base portion 41 of the operation member 40 buckles, the rigid operation portion 43 guided by the guide portion 35 reliably presses the pressing member 25 of the switch portion 20.

As described above, in the operation member 40, when the door 13 is open, the elastic base portion 41 is bent and the operator is damaged regardless of the external force applied by the contact of the operator or the like. The door 13 and the operation member 40 are not damaged while being carried. Further, when the door 13 is closed, the inner cover 30 is provided with the guide portion 35, and the elastic base portion 41 of the operation member 40 corresponds thereto, whereby the tolerance of the mounting accuracy of the operation member 40 can be relaxed, and the workability of assembling the device is improved. Improve. In this embodiment, the elastic body is used only for a part (base portion) of the operating member, but as shown in FIG. 4, the entire operating member 400 may be formed of an elastic material. Further, in place of the elastic material, as shown in FIG. 5, a base portion 451 which is a mounting portion to the door 13 is formed of a spring, and an operation portion 455 is formed of a rigid body.
Even if it is 0, the same effect is achieved. Although the operating member 460 shown in FIG. 6 shows an example in which the entire operation member 460 is formed of a spring, the operating member 460 can also perform a reliable switch operation and can cope with an external force from any direction.

Embodiment 2 The interlock switch device shown in this embodiment constitutes an operating member by using a link mechanism. FIG. 7 is a partially enlarged view of the switch device, and FIG. 8 is an operation explanatory view of the operating member. The guide portion 35 of the inner cover 30 and the switch portion 20 arranged on the copying machine side have the same configurations as those in the first embodiment, and are denoted by the same reference numerals and the description thereof is omitted. The door 130 has both edges thereof bent toward the inner cover to form bent portions 133 and 135. The operation member 500 is provided on the one bent portion 133 side through the support member 137. The operation member 500 is rotatably connected to the support member 137 with a stopper 510. The supporting member 137 is dimensioned so as not to project from the bent portion 133. The other bent portion 135
A hinge 600 and a link member 650 are arranged on the hinge via a hinge support member 139. The link member 650 and the operation member 500 are connected by the connecting member 700.
The connecting member 700 has an elastic portion 730 formed by a part of an elastic material such as a spring. The connecting member 700 has one end fixed to the link member 650 and the other end fixed to the end portion of the operation member 500 by a stopper 750.

In the copying machine having the above structure, when the door 130 is closed, the operation member 50 disposed inside the door 130 is used.
0 is guided by the guide part 35 of the inner cover 30 and inserted into the machine, and the switch button 23 is pressed through the pressing member 25 of the switch part 20 to turn on the switch of the copying machine. When the door 130 is opened, the operating member 500 is pushed by the connecting member 700 as the door 130 rotates, and rotates in the arrow X direction with the stopper 510 as a fulcrum. Then, when the door 130 is rotated 90 degrees and expanded, the operation member 500 is heavily folded on the connecting member 700. When the door 130 is closed, the operating member 500 is pulled by the connecting member 700 and rotates in the direction indicated by the arrow Y with the stopper 510 as a fulcrum.
Then, it is guided by the guide portion 35 of the inner cover 30 and inserted into the machine. At this time, since the elastic portion 730 formed by the spring, which is a part of the connecting member 700, expands and contracts in conjunction with the operating member 500, when the operating member 5 is inserted into the guide portion 35.
The tolerance of the mounting position accuracy of 00 is eased. In this way, the operation member 500 rotates with the opening of the door 130, is housed in the bent portion 133 of the door 130, and does not come into contact with an operator or the like.

Embodiment 3 In this embodiment, the operation member is operated by a spring.
FIG. 9 is a partially enlarged view of the switch device in which the inner cover is omitted. Since the guide portion (omitted) of the inner cover arranged on the copying machine side and the switch portion 20 have the same configurations as those of the first embodiment, the description thereof will be omitted. The door 130 has bent portions 133 and 135 formed on both edges thereof, and the operation member 900 is provided on one bent portion 133 side through a support member 137.
And the hinge support member 13 is provided on the other bent portion 135.
The hinge 600 and the link member 650 are arranged via the connector 9. The operation member 900 is rotatably connected to a support member 137 having a size that does not protrude from the bent portion 133 by a stopper 910. The link member 650 and the link portion 850 of the operation member 900 are replaced with a rigid member and the wire 8
00 are connected. Further, the support member 137 and the operating member 900 are connected by a spring 950, and the spring 950 urges the operating member 900 to be in a state parallel to the door 130.

When the copying machine constructed as described above is rotated in the direction in which the door 130 is closed, the link portion 850 of the operating member 900 arranged inside the door 130 is pulled by the wire 800, and the urging force of the spring 950 is applied. It rotates in the direction of arrow S against and stands up. Then, the operation member 900 is guided by the guide portion of the inner cover and inserted into the machine, and the switch portion 2
The switch of the copying machine is turned on by pressing the switch button 23 via the pressing member 25 of 0. Door 130
When the door 130 is opened, the operation member 900 is rotated in the direction of the arrow P with the stopper 910 as a fulcrum by the biasing force of the spring along with the rotation of the door 130, and when the door 130 is opened, the operation member 900 is parallel to the door 130. State, the bent portion 133 of the door 130
It is stored inside. Thus, the operating member 900 is the door 1
When the door 30 is opened, it is housed in the bent portion 133 of the door 130 and does not come into contact with an operator or the like.

[0014]

According to the interlock device of the present invention, when the door is opened for maintenance, even if an operator accidentally contacts clothes or a part of the body with the operating member, the operating member has flexibility. Therefore, the clothes are not damaged, the human body is not damaged, and the inconvenience such as the dropping of the operating member due to the contact caused by the conventional device is eliminated. Further, since the operation member is guided to the switch portion by the guide portion, the tolerance of the mounting position accuracy of the operation member can be relaxed, and the workability of assembling the apparatus can be made factory.

[Brief description of drawings]

FIG. 1 is an explanatory top view of a copying machine having an interlock switch device.

FIG. 2 is an enlarged view of a main part of the interlock switch device.

FIG. 3 is an operation explanatory view of the interlock switch device.

FIG. 4 is a structural explanatory view showing another embodiment of the operation member.

FIG. 5 is a structural explanatory view showing another embodiment of the operation member.

FIG. 6 is a structural explanatory view showing another embodiment of the operation member.

FIG. 7 is an enlarged view of essential parts showing an interlock switch device according to a second embodiment.

FIG. 8 is an operation explanatory diagram of the operation member according to the second embodiment.

FIG. 9 is an enlarged view of essential parts showing an interlock switch device according to a third embodiment.

FIG. 10 is a schematic perspective view showing a conventional example of an interlock switch device.

[Explanation of symbols]

10 copy machine body, 13 door, 20 switch section,
30 inner cover, 33 guide part, 40,
400,450,460,500,900 operation member,
41,451 elastic body, 600 hinge, 650
Link member, 700, 800 connecting member, 750,
850 link section.

Claims (6)

[Claims] 1. A switch and an operating member for activating the switch, wherein the operating member has a tip portion rotatably formed, and guides the tip portion of the operating member between the switch and the operating member. An interlock switch device provided with a guide member that operates. 2. The interlock switch device according to claim 1, wherein at least a part of the operation member is made of an elastic body and is deformable. 3. An interlock switch for detecting opening / closing of a door, comprising a switch arranged inside the body and an operation member arranged on a door arranged to be openable / closable in the body. The interlock switch device according to claim 1, wherein the guide member is provided on an inner cover provided on the machine body to cover the switch. 4. The operation member is configured to be rotatable between a position parallel to the door surface and a position perpendicular to the door surface. When the door is closed, the operation member comes to a position perpendicular to the door surface and is guided by the guide member to switch the switch. And when you open the door,
The interlock switch device according to claim 1, wherein the interlock switch device is configured to rotate to a position parallel to the door surface. 5. The interlock switch device according to claim 4, wherein the operation member is rotated by a link mechanism. 6. The interlock switch device according to claim 4, wherein the operation member is housed inside the door when the door is open.