JP7439697B2 - switch cover - Google Patents

Description

The present invention relates to a switch cover attached to a switch device.

Conventionally, a switch cover that is attached to a switch device having a switch is known. This type of technology is described in Patent Documents 1 to 3. Patent Document 1 describes a switch cover including a locking mechanism for engaging a switch cover lid with a frame fixed to a wall surface or an operation panel. Patent Document 2 describes a switch cover in which a pocket is provided inside the front panel in which a prohibited operation tag or the like can be stored. Patent Document 3 describes an erroneous operation prevention device in which a sensor detects that a switch cover is opened and generates a sound. The techniques disclosed in Patent Document 1 to Patent Document 3 all have a function to prevent erroneous operation of the switch device.

Unexamined Japanese Patent Publication No. 2015-5330 Japanese Patent Application Publication No. 2012-79549 Publication No. 63-253601

However, although the technique disclosed in Patent Document 1 can lock the switch cover so that it does not open, it is difficult to determine whether or not the operation is actually prohibited. With the technology of Patent Document 2, it is possible to display on the switch cover that the operation is prohibited, but there is a possibility that the switch may be pressed down by mistake because there is no locking mechanism. The technique disclosed in Patent Document 3 can notify the surroundings that the switch cover of a switch device whose operation is prohibited has been opened, but the structure is complicated and installation and management costs are high.

An object of the present invention is to provide a switch cover that has a simplified structure and can more reliably prevent erroneous operations.

The present invention is a switch cover attached to a switch device including a main body having a switch, the switch cover being rotatable about a rotation axis between an open position where the switch can be operated and a closed position where the switch cannot be operated. a first cover attached to the main body; and a second cover attached to the first cover and forming a storage part into which a plate-shaped display tag can be inserted from the rotating shaft side between the first cover and the first cover. A cover, at least a portion of which is disposed in the storage section, is movable between a first position where rotation of the first cover is restricted and a second position where rotation of the first cover is unrestricted. a regulating member, and a biasing member disposed in the storage section to urge the regulation member toward the second position, the regulation member being arranged such that the display tag is stored in the storage section. The present invention relates to a switch cover that moves to the first position when pushed by the display tag, and moves to the second position by the biasing member when the display tag is removed from the storage section.

The regulating member has a main body side protruding piece that protrudes toward the main body when the first cover is attached to the main body, and the main body side protruding piece contacts the main body at the first position. When the first cover is moved to the second position, the distance between the main body side protruding piece and the main body becomes wider than in the first position, thereby restricting the rotation of the first cover. restrictions will be lifted.

The regulating member has an inclined portion that is inclined so as to move the regulating member to the second position as the display tag advances in the insertion direction of the display tag.

According to the present invention, it is possible to provide a switch cover that has a simplified structure and can more reliably prevent erroneous operations.

FIG. 1 is a perspective view of a switch device to which a switch cover according to an embodiment of the present invention is attached, viewed diagonally from above. FIG. 3 is a sectional view showing a switch device with a switch cover attached without a display tag stored therein. FIG. 2 is a sectional view showing a switch device to which a switch cover in which a display tag is housed is attached. FIG. 6 is a sectional view showing the opening operation of the switch cover in which the display tag is housed. FIG. 6 is a cross-sectional view showing the opening operation of the switch cover in which no display tag is housed.

Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments.

The switch cover 1 according to this embodiment is a lid attached to a switch device 100 having a switch 120. FIG. 1 is a perspective view of a switch device 100 to which a switch cover 1 is attached, as viewed diagonally from above. FIG. 2 is a cross-sectional view of the switch device 100 to which the switch cover 1 without the display tag 2 housed is cut along the line AA shown in FIG. FIG. 3 is a cross-sectional view of the switch device 100 to which the switch cover 1 containing the display tag 2 is attached, taken along the line AA shown in FIG.

First, the configuration of the switch device 100 to which the switch cover 1 is attached will be described. In this embodiment, a switch device 100 provided in a central control room or the like to remotely control equipment (not shown) in a power plant, factory, or the like will be described as an example.

As shown in FIGS. 1 to 3, the switch device 100 includes a main body 110 having a switch 120. As shown in FIGS. The main body 110 has a box shape with an opening 111 formed in its upper surface. The main body 110 includes a substantially rectangular base surface 112 facing the opening 111 and provided with the switch 120, and four side walls 113, 114, 115 extending from the edge of the base surface 112 toward the opening 111 so as to surround the switch 120. 116 included. The switch 120 is a push button type switch that can be pressed down toward the base surface 112. By pressing the switch 120, the device can be remotely controlled.

Next, the switch cover 1 according to this embodiment will be explained. As shown in FIGS. 1 to 3, the switch cover 1 includes a first cover 10, a second cover 20, a regulating member 40, and a biasing member 50. A display tag 2 for preventing erroneous operation of the switch 120 can be attached to the switch cover 1.

The display tag 2 is a plate-shaped tag on which characters and the like are written to warn the user not to operate the switch device 100. On the display tag 2, for example, characters such as "operation prohibited" are written. The display tag 2 has a predetermined thickness T.

The first cover 10 has a box shape with an open top, and is attached to the main body 110 via a hinge 11. The first cover 10 attached to the main body 110 rotates around the rotation axis B to open and close the opening 111. That is, the first cover 10 is attached to the main body 110 so as to be rotatable about the rotation axis B between an open position where the switch 120 can be operated and a closed position where the switch 120 cannot be operated. In the closed position, the opening 111 is closed and the first cover 10 and the side walls 113-116 close the periphery of the switch 120. In the open position, the opening 111 is open and the switch 120 can be operated.

The hinge 11 has a shaft 12 extending along the upper surface of the side wall 113 and a torsion coil spring 13 wound around the shaft 12.

The torsion coil spring 13 is wound around the center of the shaft 12 in the direction in which the shaft 12 extends. The torsion coil spring 13 has one end fixed to the side wall 113 of the main body 110 of the switch device 100 and the other end fixed to the first cover 10. The torsion coil spring 13 biases the end of the first cover 10 opposite to the rotation axis B so that the side wall 114 comes into contact with it. That is, when an external force is applied to push up the first cover 10, the first cover 10 rotates clockwise in FIG. 2 about the rotation axis B, thereby opening the opening 111. When the external force that pushes up the first cover 10 is no longer applied, the first cover 10 rotates counterclockwise in FIG. 2 about the rotation axis B due to the biasing force of the torsion coil spring 13, thereby closing the opening 111.

As shown in FIGS. 1 to 3, the first cover 10 includes a bottom portion 14 that covers the opening 111 and side portions 15 to 18.

The bottom portion 14 is approximately rectangular and closes the opening 111 by contacting the upper surfaces of the side walls 113 to 116 of the main body 110. The end surface of the bottom portion 14 on the side wall 113 side is fixed to the torsion coil spring 13 of the hinge 11 . Side parts 16 to 18 extend upward from the edge of the bottom part 14 excluding the hinge 11 side.

The side surface portion 16 is plate-shaped and formed on the side wall 116 side. The side surface portion 17 is plate-shaped and formed on the side wall 117 side. The side surface portion 17 extends from the side surface portion 16 to a position farther from the bottom surface portion 14 than the side wall 113 in a direction perpendicular to the rotation axis B when viewed from the side. The side wall 118 has a plate shape and is formed at a position facing the side surface portion 17 . The side surface portion 18 extends from the side surface portion 16 to a position farther from the bottom surface portion 14 than the side wall 113 in a direction orthogonal to the rotation axis B when viewed from the side.

The side surface portion 15 is a plate-shaped member that is formed at a position facing the side surface portion 16 and extends from the side surface portion 17 to the side surface portion 18. The side surface portion 15 is formed at a position protruding from the side wall 113 when viewed from the side. The side surface portion 15 has a groove portion 151 that opens on the side opposite to the hinge 11 side. The groove portion 151 is formed to have a groove width longer than the width of the display tag 2, and a groove depth longer than the thickness T of the display tag 2.

The second cover 20 has a transparent plate shape and is attached to the surface of the bottom portion 14 opposite to the surface that covers the opening 111 in the closed position. Specifically, the second cover 20 is fixed to the upper surfaces of the side parts 15 to 18 and is spaced from the bottom part 14. Further, as shown in FIGS. 1 to 3, since the second cover 20 is plate-shaped and the side surface portion 15 has the groove portion 151, an opening portion 221 is formed between the second cover 20 and the side surface portion 15. It is formed. The distance between the second cover 20 and the side surface portion 15 at the opening 221 is formed to be longer than the thickness T of the display tag 2. That is, the second cover 20 forms an opening 221 between it and the first cover 10 into which the plate-shaped display tag 2 can be inserted from the rotating shaft B side.

Further, the second cover 20 forms a storage section 30 with the first cover 10 that communicates with the opening 221 . The storage section 30 is a space surrounded by the bottom section 14 and side sections 15 to 18 of the first cover 10 and the surface of the second cover 20 on the bottom section 14 side. The storage section 30 is formed such that the distance between the side surface portion 17 and the side surface portion 18 is longer than the width of the display tag 2, and the distance between the bottom surface portion 14 and the second cover 20 is longer than the thickness T of the display tag 2. be done. That is, the storage section 30 is formed to be able to accommodate the display tag 2 inserted through the opening 221.

Since the storage section 30 is formed between the first cover 10 covering the top surface of the switch 120 and the transparent second cover 20, the display tag 2 can be displayed on the surface of the switch cover 1. Thereby, it is possible to alert the operator to prevent erroneous operation of the switch device 100.

The regulating member 40 is a plate-like member having a generally L-shaped cross section as a whole. A portion of the regulating member 40 is disposed within the storage portion 30 on the rotation axis B side, and the other portion is disposed between the main body 110 and the second cover 20 on the rotation axis B side. The regulating member 40 is arranged near the center of the shaft 12 in the longitudinal direction of the side wall 113. The regulating member 40 includes a base portion 41, a storage section side protrusion piece 42, and a main body side protrusion piece 43.

The base 41 has a block shape and is arranged between the torsion coil spring 13 and the second cover 20. The base 41 is formed at a position facing the opening 221 and extends from the main body 110 side to the second cover 20 side as it progresses from the side surface portion 15 side to the side surface portion 16 side when viewed in the rotation axis direction of the first cover 10. An inclined portion 411 is formed which is inclined to . That is, the inclined portion 411 is inclined so as to move the regulating member 40 toward the main body 110 as the display tag 2 advances in the insertion direction. The insertion direction is a direction from the opening 221 side to the side surface portion 16 side.

The storage section side protruding piece 42 is a plate-like member that protrudes from the base 41 to the side opposite to the rotation axis B (to the side surface portion 16 side). The storage section side protruding piece 42 is arranged in the storage section 30.

The main body side protruding piece 43 is a plate-like member that protrudes from the base 41 toward the main body 110 side of the switch device 100. The main body side projecting piece 43 is arranged on the side opposite to the first cover 10 with respect to the hinge 11 when viewed in the direction of the rotation axis of the first cover 10 .

As shown in FIGS. 2 and 3, the regulating member 40 has a first position C where the rotation of the first cover 10 is regulated and a second position D where the rotation of the first cover 10 is no longer regulated. It is possible to move to As shown in FIG. 2, the second position D is a position where the base 41 of the regulating member 40 and the storage section side protruding piece 42 contact the second cover 20. As shown in FIG. As shown in FIG. 3, the first position C is a position where the regulating member 40 is separated from the second cover 20 by a thickness T of the display tag 2, and the main body side protruding piece 43 is close to the side wall 113 of the main body 110. . At this time, the main body side protruding piece 43 is arranged at a position facing the first cover 10 with the rotation axis B of the first cover 10 interposed therebetween.

The biasing member 50 is arranged in the storage section 30 and biases the regulating member 40 toward the second cover 20 side. In this embodiment, a compression coil spring is used as the biasing member 50.

As shown in FIG. 2, one end of the biasing member 50 is connected to the bottom surface portion 14 of the first cover 10 on the side of the rotation axis B, and the other end is connected to the second end of the protruding piece 42 on the housing side of the regulating member 40. It is connected to the surface opposite to the cover 20 side. The biasing member 50 biases the regulation member 40 toward the second position D, where the regulation member 40 contacts the second cover 20 .

Next, the opening operation of the switch cover 1 when the display tag 2 is stored in the storage section 30 and the opening operation of the switch cover 1 when the display tag 2 is not stored in the storage section 30 will be explained.

First, the operation of the switch cover 1 when the display tag 2 is stored in the storage section 30 will be described with reference to FIG. 4. FIG. 4(A) is a sectional view showing the switch device 100 in a state where the opening 111 is closed by the switch cover 1 with the display tag 2 stored in the storage portion 30. FIG. 4(B) is a cross-sectional view showing the switch device 100 in a state where the display tag 2 is stored in the storage section 30 and the switch cover 1 is opened to a possible position.

When the worker inserts the display tag 2 through the opening 221, the end of the display tag 2 contacts the slope 411 of the base 41 of the regulating member 40, and the second cover 20 and the base 41 move along the slope 411. guided to the contact surface.

When the operator further inserts the display tag 2 into the side surface 16 side, the display tag 2 pushes the storage section side protruding piece 42 , which is biased toward the second cover 20 side by the biasing member 50 , onto the bottom surface of the first cover 10 . It is stored in the storage part 30 while being pushed toward the part 14 side. At the second position D, since the inclined part 411 that guides the display tag 2 on the contact surface between the second cover 20 and the regulating member 40 is formed at a position facing the opening 221, the display tag 2 can be smoothly stored. It can be stored in the section 30.

As shown in FIG. 4A, when the display tag 2 is stored in the storage section 30, the biasing member 50 is compressed toward the first cover 10, and the main body side protruding piece 43 of the regulating member 40 moves toward the main body 110 by the thickness T of the display tag 2. That is, the regulating member 40 moves to the first position C where the rotation of the first cover 10 is regulated.

As shown in FIG. 4(B), when the operator pushes up the switch cover 1 and rotates it around the rotation axis B, the main body side protruding piece 43 comes into contact with the main body 110. Thereby, rotation of the first cover 10 can be prevented. Therefore, a sufficient gap is not formed between the first cover 10 and the main body 110 so that the operator can insert his/her finger, and erroneous operation of the switch 120 can be prevented when the display tag 2 is stored.

Next, the opening operation of the switch cover 1 when the display tag 2 is not stored in the storage section 30 will be described with reference to FIG. 5. FIG. 5(A) is a sectional view showing the switch device 100 with the opening 111 closed by the switch cover 1. FIG. 5(B) is a diagram showing a state in which the switch cover 1 is opened to the same position as FIG. 4(B). FIG. 5C is a diagram showing a state in which the switch cover 1 is opened to a position where the switch 120 can be pressed down.

A worker grasps the tip of the display tag 2 protruding from the opening 221 and takes out the display tag 2 from the storage section 30. Since an opening 221 into which the display tag 2 is inserted is formed on the upper surface of the switch cover 1 on the rotation axis B side, the display tag 2 can be easily taken out.

When the display tag 2 is taken out, as shown in FIG. 5(A), the urging force of the compressed urging member 50 moves the regulating member 40 to the second position D where it contacts the second cover 20. At the same time, the distance between the tip of the main body side protruding piece 43 and the main body 110 increases by the thickness T of the display tag 2. That is, the regulating member 40 moves to the second position D where the rotation of the first cover 10 is no longer restricted.

As shown in FIG. 5(B), the operator pushes up and rotates the switch cover 1 until the angle of the switch cover 1 with respect to the main body 110 becomes the same angle as the state shown in FIG. 4(B). Since the distance between the main body side protruding piece 43 and the main body 110 is widened, the main body side protruding piece 43 and the main body 110 do not come into contact, unlike the case of FIG. 4(B). Therefore, the switch cover 1 can be further rotated clockwise about the rotation axis B.

Even if the worker further rotates the switch cover 1 clockwise in FIG. 5, the main body side protruding piece 43 does not come into contact with the main body 110 and the switch 120 can be pressed down, as shown in FIG. 5(C). The switch cover 1 opens to the position.

According to the switch cover 1 according to the present embodiment described above, the following effects are achieved.

The switch cover 1 according to the present embodiment is a switch cover 1 that is attached to a switch device 100 that includes a main body 110 having a switch 120, and has an open position where the switch 120 can be operated around a rotation axis B, and an open position where the switch 120 can be operated. A first cover 10 is attached to the main body 110 so as to be rotatable between impossible closed positions, and a plate-shaped display tag is attached to the first cover 10 and is attached to the first cover 10 from the rotation axis B side. 2, a second cover 20 forming a storage section 30 into which the second cover 2 can be inserted, a first position C, at least a portion of which is disposed in the storage section 30, and where rotation of the first cover 10 is restricted; a regulating member 40 that is movable to a second position D where the restriction on rotation of 10 is released; a biasing member 50 that is disposed in the storage section 30 and biases the regulating member 40 toward the second position D; When the display tag 2 is stored in the storage section 30, the regulation member 40 is pushed by the display tag 2 and moves to the first position C, and when the display tag 2 is removed from the storage section 30, the regulation member 40 is moved to the first position C. 50 to the second position D.

This forms the storage section 30 into which the display tag 2 can be inserted from the rotation axis B side of the first cover 10, so that the display tag 2 indicating that the operation of the switch device 100 is prohibited can be easily attached to and removed from the switch cover 1. can. Further, since the rotation of the first cover 10 can be restricted by moving the regulating member 40 using the inserted display tag 2, the display tag 2 stored in the switch cover 1 can alert the operator, and the switch cover 1 can be It can be locked to prevent it from opening. Therefore, by the operation of inserting the display tag 2, a prohibition of operation can be displayed, and the first cover 10 can be locked, so that erroneous operation can be more reliably prevented with a simplified structure.

The regulating member 40 has a main body side protruding piece 43 that protrudes toward the main body 110 when the first cover 10 is attached to the main body 110, and the main body side protruding piece 43 contacts the main body 110 at the first position C. This restricts the rotation of the first cover 10, and when the first cover 10 moves to the second position D, the distance between the main body side protruding piece 43 and the main body 110 becomes wider than in the first position C. Rotation restrictions are lifted.

Thereby, the opening operation of the switch cover 1 can be locked by adjusting the distance between the main body side protruding piece 43 of the regulating member 40 and the main body 110, so that erroneous operation can be more reliably prevented with a simplified structure.

The regulating member 40 has an inclined portion 411 that is inclined so as to move the regulating member 40 toward the first position C as the display tag 2 advances in the insertion direction of the display tag 2.

Thereby, the movement of the regulating member 40 to the first position C when the display tag 2 is inserted into the storage section 30 becomes smoother.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified as appropriate.

In the embodiment described above, the rotation of the first cover 10 is regulated by the main body side protruding piece 43 of the regulating member 40 coming into contact with the main body 110 at the first position C. 40 may sandwich the shaft 12 of the hinge 11 to restrict the rotation of the shaft 12, thereby restricting the rotation of the first cover 10.

In the embodiment described above, the switch cover 1 is attached so that the opening 111 formed on the top surface of the switch device 100 can be opened and closed, but the switch cover 1 is attached to the opening on the front side of a switch device or operation panel attached to a wall surface etc. It's okay.

In the above embodiment, a compression coil spring is used as the biasing member 50, but the type of the biasing member 50 is not particularly limited. For example, the material of the biasing member may be a metal material or a polymeric material such as an elastomer. Moreover, the shape may be plate-like, tube-like, string-like, or the like.

1 Switch cover 2 Display tag 10 First cover 20 Second cover 30 Storage part 40 Regulating member 50 Biasing member 100 Switch device 110 Main body 120 Switch 221 Opening B Rotating shaft C First position D Second position

Claims (3)

A switch cover attached to a switch device including a main body having a switch,
a first cover rotatably attached to the main body between an open position where the switch can be operated and a closed position where the switch cannot be operated around a rotation axis;
a second cover that is attached to the first cover and forms a storage section between which a plate-shaped display tag can be inserted from the rotating shaft side;
A regulating member at least partially disposed in the storage section and movable between a first position where rotation of the first cover is regulated and a second position where regulation of rotation of the first cover is released. and,
a biasing member disposed in the storage section that biases the regulation member toward the second position;
When the display tag is stored in the storage section, the restriction member is pushed by the display tag and moves to the first position, and when the display tag is removed from the storage section, the biasing member moves the restriction member to the first position. Switch cover moving to second position. The regulating member has a main body side protruding piece that projects toward the main body when the first cover is attached to the main body,
The rotation of the first cover is regulated by the body-side protruding piece coming into contact with the body at the first position, and when the first cover moves to the second position, the body-side protruding piece contacts the body at the first position. The switch cover according to claim 1, wherein rotation of the first cover is no longer restricted by increasing the distance between the first cover and the main body. The switch cover according to claim 1 or 2, wherein the restriction member has an inclined portion that is inclined so as to move the restriction member to the second position as the display tag advances in the insertion direction of the display tag.

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