JP5578582B2 - Changeover switch - Google Patents

Description

  The present invention relates to a changeover switch suitable for use as an operation changeover switch for a main machine or an auxiliary machine of electrical equipment.

In an electric power company, for example, a changeover switch 110 as shown in FIGS. 7A and 7B (for example, an instrument change cam switch manufactured by Fuji Electric Technica Co., Ltd .: RC310 type, AK8 type) are installed alone on a switchboard or operation panel, or a plurality of them are installed in a matrix, and an operator manually operates the changeover switch 110 as necessary.
In the following description, the handle 111 side of the changeover switch 110 is referred to as “front side” and “tip side”, and the opposite side of the handle 111 is referred to as “rear side” and “end side” for the sake of simplicity.

  The changeover switch 110 includes a handle 111 (chrysanthemum handle), a rectangular switch base 112 (escussion), a nameplate 113 attached to the front surface of the switch base 112, and a switch shaft 115 by turning the handle 111. A contact unit 114 in which a plurality of contacts that are switched in conjunction with each other are housed, a rectangular bar-shaped switch shaft 115 having a tip protruding from the center of the front surface of the contact unit 114, and a handle mounting screw 116.

The handle 111 includes a disc-shaped knob member 111a having a round mark 111c on the front surface, and a columnar mounting member 111b erected at the center of the back surface of the knob member 111a.
A switch shaft insertion hole having a rectangular opening surface is formed at the center of the end surface of the mounting member 111b so that the tip of the switch shaft 115 can be inserted.
At the center in the axial direction of the mounting member 111b and the switch shaft 115, a handle mounting screw hole that engages with the handle mounting screw 116 is formed so as to penetrate the mounting member 111b and the switch shaft 115 in the vertical direction. .

A switch shaft through hole (see the switch shaft through hole 12a shown in FIG. 2A) is formed in the center portion of the switch base 112 so as to allow the tip end of the switch shaft 115 to rotate.
On the left and right sides of the switch shaft through hole on the front surface of the switch base 112, there are two switch base mounting screw holes (the first shown in FIG. 2A) that are screwed with two switch base mounting screws (not shown). 1 and second switch base mounting screw holes 12d ₁ and 12d ₂ ) are formed so as to penetrate from the front surface to the rear surface.
At the four corners of the front surface of the switch base 112, four name plate mounting screw holes are formed for screwing with four name plate mounting screws (not shown) for mounting the name plate 113 to the front surface of the switch base 112.

In the upper center portion of the front surface of the nameplate 113, characters of “control power” indicating the control power source that is the target electrical equipment for the on / off operation using the changeover switch 110 are written. The characters “OFF” and “ON” indicating the OFF state and ON state of the changeover switch 110 are respectively shown on the left and right lower sides of the character “CONTROL POWER”. Thus, when the control power is turned on, the handle 111 is turned so that the mark 111c of the handle 111 comes to the position of the character “ON”, while when the control power is turned off. The mark 111c of the handle 111 is turned so that it comes to the position of the character “cut”.
A switch shaft through-hole (same shape and same size as the switch shaft through-hole of the switch base 112) is formed in the central portion of the nameplate 113 for allowing the switch shaft 115 to rotate therethrough.
In the four corners of the nameplate 113, four nameplate mounting screw through holes are formed for allowing the four nameplate mounting screws to pass therethrough.

  On the front surface portion of the contact unit 114, two switch base mounting screw holes that are screwed with two switch base mounting screws are formed.

When the change-over switch 110 configured in this way is attached to the operation panel 1, first, with the handle 111 removed, the front end of the switch shaft 115 is connected to the front panel (change-over switch attachment plate) and the switch. After passing the switch shaft through hole of the base 112, the switch base 112 is operated by screwing two switch base mounting screws into the two switch base mounting screw holes of the switch base 112 and the contact unit 114. Attach to the front plate of panel 1.
Thereafter, the front end of the switch shaft 115 is passed through the switch shaft through hole of the name plate 113, the back surface of the name plate 113 is joined to the front surface of the switch base 112, and four name plate mounting screws are provided at the four corners of the name plate 113. The nameplate 113 is attached to the switch base 112 by inserting the four nameplate attachment screws into the four nameplate attachment screw holes at the four corners of the switch base 112 after being inserted into the attachment screw through holes.
Then, after inserting the tip of the switch shaft 115 into the switch shaft insertion hole of the mounting member 111b of the handle 111 so that the mounting member 111b of the handle 111 and the handle mounting screw hole of the switch shaft 115 overlap, the handle mounting screw 116 is inserted. The handle 111 is attached to the switch shaft 115 by being screwed into the handle attachment screw holes of the attachment member 111b and the switch shaft 115.

  Thus, the changeover switch 110 is attached to the operation panel 1 with the front panel of the operation panel 1 sandwiched between the switch base 112 and the contact unit 114. For this reason, since the handle 111 is mounted so as to protrude from the front plate of the operation panel 1, it is easy for an operator's clothes or a long object such as a rope or a cable to be caught. However, it may rotate and cause the malfunction of the changeover switch 110, which may hinder the operation of the auxiliary machine and the main machine.

  Therefore, for the changeover switch 110 that needs protection, for example, the handle 111 of the changeover switch 110 is covered with a plastic transparent cover with a magnet, and the plastic transparent cover is removed when the changeover switch 110 is operated ( (See paragraph 0004 of Patent Document 1 below).

JP 2000-137510 A

However, the use of the plastic transparent cover with magnets to prevent malfunction of the changeover switch 110 due to contact of a worker's clothes and the like has the following problems.
(A) It is vulnerable to impact caused by dropping or the like and is easily damaged.
(B) When the magnet is removed, the adsorption capability by magnetic force is lost, and the selector switch 110 cannot be protected.
(C) When the plastic color changes due to deterioration over time, the mark 111c becomes difficult to see, so the visibility of the on / off state of the changeover switch 110 decreases.
(D) There is a cost when purchasing a single unit.

  In addition, since the switch 111 protrudes from the front plate of the operation panel 1 and the position of the mark 111c is difficult to confirm accurately unless the switch 111 is from the front, the change-over switch 110 has a structure in which rotation of the change-over switch 110 is insufficient. There has been a problem of causing a contact failure (contact failure).

  An object of the present invention is to provide a change-over switch that can prevent malfunction due to contact of a worker's clothes and the like and contact failure due to insufficient rotation of the handle.

The change-over switch of the present invention is a change-over switch (10) for performing on / off operation of electrical equipment, and includes a contact unit (14) in which a plurality of contacts are housed, and a front end portion from the front surface of the contact unit. A projecting rectangular rod-shaped switch shaft (15), and attached to the tip end of the switch shaft so as to be movable along the axial direction of the switch shaft, and being rotated through the switch shaft A handle (11) for switching the plurality of contacts of the contact unit in conjunction with each other, a tip provided between the contact unit and the handle, and a tip end portion of the switch shaft being rotatably penetrated. It was, and said switch base for mounting the switch to the changeover switch mounting plate (12), and nameplate attached to a front surface of the switch base (13), one end tip The other end while being is attached to the handle, and a stopper (19) for locking the movement along the axial direction of the switch shaft of the handle, the switch with the normally can hold the handle during switch operation; and a rim cover (20) for mounting around the handle to pull out the handle, wherein the switch shaft, the switch so as to penetrate from the left side surface of the switch shaft to the right side surface One vertical hole (15a) formed at the tip of the shaft and having the axial direction of the switch shaft as the longitudinal direction, and the longitudinal direction of the vertical hole on a straight line along the axial direction of the switch shaft and a first and second stopper holes formed on the lower surface of the tip portion of the switch shaft so as to be positioned at the same interval as the length (15b _1, 15b _2), said handle, When the handle mounting screw (16) is passed through the vertical hole and is attached to the switch shaft, and the handle is pulled out from the edge cover, the tip of the stopper is the first stopper hole. When the movement of the handle along the axial direction of the switch shaft is locked, and the handle is pushed toward the switch base, the handle mounting screw is guided in the vertical hole and the handle is moved. moves along the axial direction of the switch shaft, is inserted tip of the stopper to the second stopper hole, characterized that you move along the axial direction of the switch shaft of the handle is locked And
Here, a box- shaped clip hanging member (18) is further provided, and the handle includes a disk-shaped knob member (11a) having a round mark (11c) on the front surface, and a rear surface of the knob member. And a mounting member (11b) in which a switch shaft insertion hole for inserting the tip end portion of the switch shaft is formed at the end face, and the stopper has an upper end portion with a sharp tip, A bar-like member (19a) comprising a central part and a lower-end part; and a clip-like member (19b) comprising an upper piece part, a bent part bent into a U-shape, and a lower piece part, and the stick-like member of the stopper The upper end portion is bent substantially vertically upward from one end portion of the central portion of the stopper, and the lower end portion of the bar-shaped member of the stopper is bent from the other end portion of the central portion of the stopper. under The open end of the lower end portion of the bar-shaped member of the stopper is penetrated through a bar-shaped member through-hole formed on the lower surface of the handle member on the back surface side. Projecting from the lower surface of the knob member, the clip hanging member is formed on the lower surface of the mounting member of the handle so that an opening surface for inserting the upper piece portion of the clip-shaped member faces the handle side. The lower piece portion of the clip-like member is attached to the upper surface of the rod-like member so that the bent portion of the clip-like member is on the handle side, and the upper portion of the clip-like member is One part is inserted into the clip hanging member, and the vertical hole of the switch shaft is passed through the mounting member of the handle in the left-right direction so that the handle is inserted into the switch. A handle mounting screw hole that is screwed with a handle mounting screw (16) for mounting to the shaft is formed to penetrate the mounting member in the left-right direction, and the lower surface of the mounting member of the handle A tip end through-hole for penetrating the tip end portion of the upper end portion of the stopper member of the stopper so as to be movable in the vertical direction may be formed.
The switch base is formed with a handle insertion hole (12b) for inserting a distal end portion of the mounting member of the handle, and a first and a second that are formed at an upper part of the handle insertion hole toward the upper left obliquely to the left and right. feather consuming hole (12c _1, 12c ₂₎ and may be provided.
After the handle is fully turned to the on position or the off position, the handle base is not inserted into the first or second blade hole of the switch base unless the handle is pushed into the switch base. You may further comprise the blade | wing (17) for rotation prevention attached to the terminal part of the said attachment member.
The nameplate may be formed with a through hole (13a) for penetrating the distal end of the mounting member of the handle, the tip of the switch shaft, and the rotating blade in the axial direction of the switch shaft. .
The edge cover has a hemispherical shape with a curved front surface, and a handle storage hole (20a) for storing the handle is formed on the front surface of the edge cover. A portion of the lower surface where the handle storage hole is formed is an opening surface, the height of the handle storage hole is the same as the height of the switch base, and the depth of the handle storage hole is set to the edge cover. The length of the back surface of the switch cover is formed such that the portion where the handle storage hole is formed can be inserted into the gap between the back surface of the switch base and the changeover switch mounting plate, and the handle storage hole on the back surface of the edge cover is formed. A switch shaft penetrating opening (20b) for passing the switch shaft from the bottom to the top may be formed at the center of the formed portion.
A name sticker indicating the electrical equipment is affixed to a portion of the front surface of the edge cover above the handle housing hole, and the change-over switch is turned on and off on the diagonally left and right sides of the name sticker. The 1st and 2nd state display stickers shown respectively may be stuck.

The changeover switch of the present invention has the following effects.
(1) Since the handle can be pushed in and stored in the edge cover at all times, it is possible to prevent malfunction due to contact of the worker's clothes and the like.
(2) By attaching the rotation retaining blade to the switch shaft and forming the first and second blade hanging holes in the switch base, the rotation retaining blade must be rotated unless the handle is completely turned to the on or off position. Can be prevented from being inserted into the first or second blade hook hole, so that contact failure due to insufficient rotation of the handle can be prevented.
Further, since the rotation retaining blade is always inserted into the first or second blade hooking hole, the handle can be prevented from rotating.
(3) Since the handle can be held in the pushed-in state by the stopper at all times, the height of the changeover switch (the amount of protrusion from the changeover switch mounting plate) can be made smaller than the conventional one, so that the worker's clothes can be prevented from touching Can be prevented.
(4) By making the shape of the edge cover hemispherical, if the handle is pushed in, the whole can be stored, so that malfunction due to catching can be prevented while the edge cover is attached.
(5) Since the handle cover hole is formed in the edge cover so that the entire changeover switch is not covered with the edge cover, the reduction in visibility of the on / off state of the changeover switch due to plastic discoloration due to deterioration over time is reduced. be able to.
(6) The edge cover can be mounted around the handle by inserting the part where the handle storage hole is formed on the back of the edge cover into the gap between the back of the switch base and the changeover switch mounting plate. Special processing such as a board can be eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the changeover switch 10 by one Example of this invention, (a) is a figure when the changeover switch 10 is seen from the front side, (b) is the changeover switch attached to the operation panel 1. It is the figure which showed a part when 10 is seen from the left side. It is a figure which shows the structure of the switch base 12 and the nameplate 13 which were shown in FIG. 1, (a) is a figure when the switch base 12 is seen from the front side, (b) is the name plate 13 seen from the front side. It is a figure of time. FIG. 2 is a diagram illustrating a configuration of a switch shaft 15 illustrated in FIG. 1, in which (a) is a diagram when the switch shaft 15 is viewed from the left side, and (b) is a diagram when the switch shaft 15 is viewed from the lower surface side. FIG. It is a figure which shows the structure of the stopper 19 shown in FIG. It is a figure for demonstrating the function of the stopper 19 shown in FIG. It is a figure which shows the structure of the edge cover 20 shown in FIG. 1, (a) is a figure when the edge cover 20 is seen from the front side, (b) is along the centerline of the left-right direction. FIG. 4C is a cross-sectional view of the edge cover 20 when it is cut. It is a figure which shows the structure of the conventional changeover switch 110, (a) is a figure when the changeover switch 110 is seen from the front side, (b) is the left side of the changeover switch 110 attached to the operation panel 1. It is the figure which showed a part when seen from the cross section.

  For the above purpose, the handle can be moved along the axial direction of the switch shaft, and the edge cover can be mounted around the handle so that the handle can be stored at all times and the handle can be pulled out when the changeover switch is operated. Realized by.

Embodiments of the changeover switch of the present invention will be described below with reference to the drawings.
In the following description, the handle 11 side of the changeover switch 10 is referred to as “front side” and “tip side”, and the opposite side of the handle 11 is referred to as “rear side” and “end side” for the sake of simplicity.

The changeover switch 10 according to one embodiment of the present invention is characterized by the following points.
(1) As shown in FIG. 1B, the handle 11 is attached to the switch shaft 15 so as to be movable along the axial direction of the switch shaft 15, and a stopper for locking the movement of the handle 11. 19 is provided.
(2) In order to prevent contact failure due to insufficient rotation of the handle 11, a rotation retaining blade 17 is attached to the end of the mounting member 11b of the handle 11 as shown in FIG. As shown, a handle insertion hole 12b is formed at the center of the switch base 12, and first and second blade hanging holes 12c ₁ and 12c ₂ are formed diagonally to the upper left and right at the upper part of the handle insertion hole 12b. As shown in FIG. 2B, a through hole 13 a for allowing the attachment member 11 b of the handle 11, the tip of the switch shaft 15, and the rotation retaining blade 17 to penetrate in the axial direction of the switch shaft 15 in the center of the nameplate 13. If the handle 11 is completely pushed to the on position or the off position and is not pushed toward the switch base 12, the detent blade 17 is first or Holes 12c ₁ for 2 vane consuming, and it is prevented plugged into 12c _2.
(3) In order to prevent malfunction due to contact of the worker's clothes and the like, the edge cover 20 is mounted around the handle 11, and the handle 11 can be stored in the edge cover 20 at all times. The handle 11 can be pulled out from the edge cover 20 to the front.

Next, the configuration of the changeover switch 10 according to the present embodiment will be described in detail with reference to FIGS.
As shown in FIGS. 1 (a) and 1 (b), the changeover switch 10 includes a handle 11, a switch base 12, a nameplate 13, a contact unit 14, a switch shaft 15, a handle mounting screw 16, and an anti-rotation mechanism. The blade 17, the clip hanging member 18, the stopper 19, and the edge cover 20 are provided.

Here, the handle 11 is, as shown in FIG. 1B, a handle mounting screw 16 (for attaching the handle 11 to the switch shaft 15 by penetrating a vertical hole 15a of the switch shaft 15 to be described later in the left-right direction). A screw hole for screwing the handle is formed at the center of the mounting member 11b so as to penetrate the mounting member 11b in the left-right direction, and a stopper which will be described later as shown in FIGS. 5 (a) to 5 (d), in which a bar-shaped member through-hole for penetrating the lower end portion of the bar-shaped member 19b and being movable in the vertical direction is formed on the lower surface on the back surface side of the knob member 11a. As shown in FIG. 5A, a tip end through hole (see FIG. 5A) is formed in the lower surface of the mounting member 11b so as to penetrate the tip end portion of the upper end portion of the rod-shaped member 19b of the stopper 19 and move in the vertical direction. What is being done In, different from the handle 111 of the conventional switch 110.
When the stopper 19 is attached to the handle 11 as shown in FIG. 5A, the tip end through-hole is inserted into the top end of the rod-shaped member 19a, and when the handle 11 is pulled out, the switch shaft 15 It overlaps with a _first stopper hole 15b ₁ (see FIG. 3B), which will be described later, and overlaps with a second stopper hole 15b ₂ (see FIG. 3B) of the switch shaft 15 when the handle 11 is pushed in. Has been.

As shown in FIG. 2 (a), the switch base 12 has a handle insertion hole 12b for inserting the end portion of the attachment member 11b of the handle 11 formed in the central portion, and is formed above the handle insertion hole 12b. It differs from the switch base 112 of the conventional changeover switch 110 in that the first and second blade hanging holes 12c ₁ and 12c ₂ are formed obliquely to the upper left and right.

  As shown in FIG. 2 (b), the nameplate 13 has a through-hole through which the distal end portion of the mounting member 11 b of the handle 11, the tip end portion of the switch shaft 15, and the rotation retaining blade 17 penetrate in the axial direction of the switch shaft 15. It differs from the nameplate 113 of the conventional changeover switch 110 in that 13a is formed at the center.

As shown in FIG. 3A, the switch shaft 15 is formed at the tip so that a longitudinal hole 15a in which the axial direction of the switch shaft 15 is the longitudinal direction penetrates from the left side surface to the right side surface; As shown in FIG. 4B, the first and second stopper holes 15b ₁ and 15b ₂ are formed on the lower surface so as to be positioned on a straight line along the axial direction of the switch shaft 15, Different from the switch shaft 115 of the changeover switch 110.
Here, the first and second stopper holes 15b ₁ and 15b ₂ have the same distance as the length of the longitudinal hole 15a in the longitudinal direction and the switch shaft with respect to the longitudinal hole 15a along the axial direction of the switch shaft 15. 15 is slightly shifted to the end side.

The swivel blade 17 must be pushed in after the handle 11 is completely turned to the entry position (that is, after the handle 11 is turned until the mark 11c is in the position of “ON”). After the handle 11 is not inserted into the first blade hole 12c ₁ and the handle 11 is completely turned to the cutting position (that is, after the handle 11 is turned until the mark 11c is at the position of “cut”). pushed not when in position and angle is not inserted into the second blade consuming hole 12c ₂ of the switch base 12 is attached to the distal end of the mounting member 11b of the handle 11 (see Figure 1 (b)).

  The clip hanging member 18 has a box shape, and as shown in FIG. 1 (b), the handle 11 has an opening surface for inserting an upper piece portion of a clip-like member 19 b described later facing the handle 11 side. Are attached to the center of the lower surface of the attachment member 11b.

As shown in FIG. 4, the stopper 19 is composed of a bar-shaped member 19a composed of an upper end portion, a central portion and a lower end portion having a sharp tip, and a clip composed of an upper piece portion, a bent portion bent into a U-shape, and a lower piece portion. And a member 19b.
Here, the upper end portion of the rod-shaped member 19a is bent substantially vertically upward from one end portion of the central portion, and the lower end portion of the rod-shaped member 19a is substantially vertical downward from the other end portion of the central portion. Is bent. Further, the open end of the lower end portion of the bar-shaped member 19b of the stopper 19 is penetrated through the bar-shaped member through hole formed on the lower surface on the back surface side of the knob member 11a when the stopper 19 is attached to the handle 11. It protrudes from the lower surface of the member 11a (refer FIG. 1 (a), (b)).
The lower piece portion of the clip-shaped member 19b is attached to the central portion of the upper surface of the rod-shaped member 19a so that the bent portion is on the handle 11 side. Further, the upper piece portion of the clip-shaped member 19 b is inserted into the clip hooking member 18.
Thus, when the open end of the lower end portion of the rod-shaped member 19b is pushed upward by hand, the repulsive force of the clip-shaped member 19b (force to pull the lower piece portion toward the upper piece portion) is resisted. The lower end portion side of the rod-shaped member 19b moves upward, and the upper end portion side of the rod-shaped member 19b moves downward (see FIG. 5B). On the other hand, when the hand is released from the open end of the lower end portion of the rod-like member 19b, the lower end portion side of the rod-like member 19b moves downward and the upper end portion side of the rod-like member 19b moves upward due to the repulsive force of the clip-like member 19b. (See FIG. 5 (d)).

The edge cover 20 is made of plastic and has a hemispherical shape with a curved front surface as shown in FIGS. Further, a handle storage hole 20 a for storing the handle 11 is formed on the front surface of the edge cover 20.
Here, the portion of the lower surface of the edge cover 20 in which the handle storage hole 20a is formed is an opening surface in order to enable the operation of the stopper 19 described above.
The height of the handle storage hole 20a is the same as the height (length in the vertical direction) of the switch base 12, and the depth of the handle storage hole 20a (length in the axial direction of the switch shaft 15) is As shown in FIG. 6D, the portion of the back surface of the edge cover 20 where the handle storage hole 20a is formed is defined as a gap between the back surface of the switch base 12 and the front panel of the operation panel 1 (the switch base 12 is connected to the operation panel 1). The length is such that it can be inserted into the front plate.
The edge cover 20 is moved from the top to the bottom as shown by the white arrow in FIGS. 6C and 6D at the center of the portion where the handle storage hole 20a is formed on the back surface of the edge cover 20. The two switch base mounting screws and the switch shaft 15 are attached so that the two switch base mounting screws (for mounting the switch base 12 to the front panel of the operation panel 1) and the switch shaft 15 are not caught. A switch shaft penetrating opening 20b for passing from the bottom to the top is formed.
On the front portion of the edge cover 20 above the handle storage hole 20a, a name sticker of “control power” indicating a control power source, which is a target electric facility for the on / off operation using the changeover switch 10, is attached to the center portion. In addition, “OFF” and “ON” state display stickers indicating the OFF state and ON state of the changeover switch 10 are respectively attached to the left and right lower sides of the “control power source” name sticker. As a result, even if the plastic color changes due to aging and it becomes difficult to see the characters “control power”, “ON” and “OFF” written on the front face of the nameplate 13, the worker is stuck on the edge cover 20. The switching operation of the handle 11 can be accurately performed by looking at the name sticker of “control power supply” and the status display stickers of “ON” and “OFF”.

Next, a method for operating the stopper 19 will be described with reference to FIG.
As shown in FIG. 5A, when the handle 11 is pulled out, the tip of the upper end portion of the rod-shaped member 19a of the stopper 19 is the first stopper hole 15b ₁ of the switch shaft 15 (FIG. 3B). The switch 11 of the handle 11 cannot be moved along the axial direction of the switch shaft 15.
In this state, when the open end of the lower end portion of the bar-shaped member 19a of the stopper 19 is pushed up by hand as shown by the white arrow in FIG. 5B, the sharp end of the upper end portion of the bar-shaped member 19a is moves downward as shown by in order to pop out the first stopper hole 15b ₁ of the switch shaft 15, the movement is possible along the axial direction of the switch shaft 15 of the handle 11.
Thereafter, when the handle 11 is pushed toward the switch base 12 as indicated by the white arrow in FIG. 5C, the handle 11 is guided to the vertical hole 15 a of the switch shaft 15 and the handle 11 is switched to the switch shaft 15. It moves along the axial direction.
Thus, when the handle 11 is pushed in until the handle mounting screw 16 comes into contact with the end of the vertical hole 15a on the switch base 12 side, the upper end portion of the rod-shaped member 19a becomes the second stopper hole 15b ₂ (see FIG. 3 (b)), when the hand is released from the open end of the lower end portion of the rod-shaped member 19a, the upper end portion of the rod-shaped member 19a moves upward as indicated by an arrow in FIG. 5 (d). Since the pointed portion of the upper end portion of the bar-shaped member 19a is inserted into the _second stopper hole 15b2, the handle 11 cannot be moved along the axial direction of the switch shaft 15. Further, the lower end portion of the rod-shaped member 19a moves downward as indicated by an arrow in FIG. 5D, and the open end portion of the lower end portion of the rod-shaped member 19a protrudes from the lower surface of the knob member 11a of the handle 11.
The operation of the stopper 19 when the handle 11 pushed into the switch base 12 is pulled out can be performed in the same procedure as described above.

Next, the operation procedure of the changeover switch 10 will be described as an example in which the control power source is switched from “ON” to “OFF”.
In this case, the handle 11 is turned so that the mark 11 c is positioned at the “ON” state display seal of the edge cover 20, and the retaining blade 17 is the first blade of the switch base 12. It is inserted into latching holes 12c _1. Further, the pointed end of the upper end portion of the rod-shaped member 19 a of the stopper 18 is inserted into the _second stopper hole 15 b ₂ of the switch shaft 15.

The operator grasps the knob member 11a of the handle 11 with his / her hand, pushes up the open end of the lower end portion of the rod-shaped member 19a of the stopper 18 protruding from the lower surface of the knob member 11a of the handle 11, and then handles the handle mounting screw 16 The handle 11 is pulled out from the handle storage hole 20a of the edge cover 20 while releasing the thumb from the open end of the lower end portion of the rod-shaped member 19a of the stopper 18 until the end of the vertical hole 15a of the switch shaft 15 contacts the handle 11 side end.
As a result, the rotation retaining blade 17 is pulled out from the first blade hooking hole 12 c ₁ of the switch base 12, and the open end of the lower end portion of the rod-shaped member 19 a of the stopper 18 protrudes from the lower surface of the knob member 11 a of the handle 11. At the same time, the tip of the upper end portion of the rod-shaped member 19 a of the stopper 18 is inserted into the _first stopper hole 15 b ₁ of the switch shaft 15.
As a result, the handle 11 can be turned. Therefore, the operator manually turns the knob member 11a of the handle 11 so that the mark 11c is positioned at the “OFF” state display seal of the edge cover 20.

Thereafter, the operator pushes up the open end of the lower end portion of the rod-shaped member 19a of the stopper 18 protruding from the lower surface of the knob member 11a of the handle 11 with the thumb, and then the handle mounting screw 16 is inserted into the vertical hole 15a of the switch shaft 15. The handle 11 is pushed toward the switch base 12 while releasing the thumb from the open end of the lower end portion of the rod-shaped member 19a of the stopper 18 until it abuts the end on the switch base 12 side.
At this time, when the handle 11 is fully rotated to the position of the “OFF” state indication seal of the edge cover 20, the retaining blade 17 is inserted into the _second blade hook hole 12 c ₂ of the switch base 12. Therefore, the handle 11 can be stored in the handle storage hole 20a of the edge cover 20, but the handle 11 is not fully rotated to the position of the “OFF” state indication seal of the edge cover 20 (that is, the handle 11), the rotation retaining blade 17 is not inserted into the _second blade hooking hole 12c2 of the switch base 12, so that the handle 11 is stored in the handle storage hole 20a of the edge cover 20. In addition, since the open end of the lower end portion of the bar-shaped member 19a of the stopper 18 does not protrude from the lower surface of the knob member 11a of the handle 11, The worker can immediately recognize the insufficient rotation of the handle 11.
When the handle 11 is completely rotated to the position of the “off” state indication seal of the edge cover 20, the retaining blade 17 is inserted into the _second blade hook hole 12c2 of the switch base 12. Therefore, the handle 11 cannot be turned.

  When the control power source is switched from “OFF” to “ON”, it can be performed by the same procedure as described above, and thus detailed description is omitted.

1 control panel 10 and 110 change-over switch 11 and 111 handle 11a, 111a knob member 11b, 111b mounting member 11c, 111c mark 12,112 switch base 12a switch shaft through hole 12b handle insertion hole 12c _1, 12c ₂ first and second feather consuming hole 12d _1, 12d ₂ first and second switch base mounting screw hole 13, 113 nameplate 13a through holes 14 and 114 contact unit (15, 115) switch shaft 15a vertical hole 15b _1, 15b ₂ first and Second stopper holes 16, 116 Handle mounting screw 17 Rotating retaining blade 18 Clip hooking member 19 Stopper 19a Bar-shaped member 19b Clip-shaped member 20 Edge cover 20a Handle storage hole 20b Switch shaft penetrating opening

Claims (7)

A changeover switch (10) for turning on / off electrical equipment,
A contact unit (14) containing a plurality of contacts;
A rectangular rod-shaped switch shaft (15) having a tip projecting from the front surface of the contact unit;
The plurality of contacts of the contact unit are interlocked with each other by being attached to the tip of the switch shaft so as to be movable along the axial direction of the switch shaft and being rotated. A handle (11) for switching;
A switch base (12) provided between the contact unit and the handle, the tip end of the switch shaft being rotatably penetrated, and for attaching the changeover switch to a changeover switch mounting plate; ,
A nameplate (13) attached to the front of the switch base;
A stopper (19) having one end portion pointed and the other end attached to the handle , and for locking movement of the handle along the axial direction of the switch shaft;
An edge cover (20) for mounting around the handle so that the handle can be normally retracted and the handle can be pulled out when the changeover switch is operated ;
The switch shaft is
Formed at the end portion of the switch shaft so as to penetrate from the left side surface of the switch shaft to the right side, and a single longitudinal hole axial direction of the switch shaft is a longitudinal direction (15a),
First and second stopper holes (15b) formed on the lower surface of the tip of the switch shaft so as to be positioned on the straight line along the axial direction of the switch shaft at the same interval as the length of the longitudinal hole in the longitudinal direction. _1, 15b ₂₎ and provided with,
The handle is attached to the switch shaft by passing a handle attachment screw (16) through the vertical hole,
In a state where the handle is pulled out from the edge cover, the tip of the stopper is inserted into the first stopper hole, and the movement of the handle along the axial direction of the switch shaft is locked,
When the handle is pushed toward the switch base, the handle moves along the axial direction of the switch shaft while the handle mounting screw is guided in the vertical hole, and the pointed end of the stopper is the second end. Inserted in the stopper hole, the movement of the handle along the axial direction of the switch shaft is locked,
A changeover switch characterized by that. Further comprising a box-shaped clip-hanging member (18),
The handle is
A disc-shaped knob member (11a) having a round mark (11c) on the front surface;
A mounting member (11b) provided on a rear surface of the knob member and having a switch shaft insertion hole for inserting a tip end portion of the switch shaft formed on a terminal surface thereof;
The stopper is
A rod-shaped member (19a) consisting of an upper end portion with a sharp tip, a central portion and a lower end portion;
A clip-like member (19b) comprising an upper piece portion, a bent portion bent into a U-shape, and a lower piece portion,
The upper end portion of the bar-shaped member of the stopper is bent substantially vertically upward from one end of the central portion of the stopper;
The lower end portion of the rod-shaped member of the stopper is bent substantially vertically downward from the other end portion of the central portion of the stopper;
An open end portion of the lower end portion of the bar-shaped member of the stopper is protruded from a lower surface of the knob member through a bar-shaped member through hole formed on the lower surface of the handle member on the back surface side,
The clip hanging member is attached to the lower surface of the attachment member of the handle so that an opening surface for inserting the upper piece portion of the clip-like member faces the handle side,
The lower piece portion of the clip-like member is attached to the upper surface of the rod-like member such that the bent portion of the clip-like member is on the handle side;
The upper piece portion of the clip-shaped member is inserted into the clip hanging member,
The mounting member of the handle has a handle mounting screw hole for threadingly engaging with a handle mounting screw (16) for passing the vertical hole of the switch shaft in the left-right direction and mounting the handle to the switch shaft. It is formed so as to penetrate the mounting member in the left-right direction,
On the lower surface of the mounting member of the handle, a pointed end through-hole is formed to allow the pointed end of the upper end portion of the bar-shaped member of the stopper to pass through and move in the vertical direction.
The changeover switch according to claim 1, wherein: The switch base is
A handle insertion hole (12b) for inserting the end of the mounting member of the handle;
First and second blade hanging holes (12c ₁ , 12c ₂ ) are formed on the upper part of the handle insertion hole so as to extend obliquely to the upper right and left, respectively.
The changeover switch according to claim 2, wherein: After the handle is fully turned to the on position or the off position, the handle base is not inserted into the first or second blade hole of the switch base unless the handle is pushed into the switch base. The changeover switch according to claim 3 , further comprising a swivel blade (17) attached to a distal end portion of the attachment member. The nameplate is formed with a through hole (13a) for penetrating the distal end portion of the mounting member of the handle, the tip end portion of the switch shaft, and the rotation retaining blade in the axial direction of the switch shaft. The changeover switch according to claim 4, wherein The edge cover has a hemispherical shape with a curved front surface;
A handle storage hole (20a) for storing the handle is formed on the front surface of the edge cover,
The portion where the handle storage hole is formed on the lower surface of the edge cover is an opening surface,
The height of the handle storage hole is the same as the height of the switch base,
The depth of the handle storage hole is such a length that the portion of the back surface of the edge cover where the handle storage hole is formed can be inserted into the gap between the back surface of the switch base and the changeover switch mounting plate,
A switch shaft penetrating opening (20b) for passing the switch shaft from the bottom to the top is formed at the center of the back surface of the edge cover where the handle housing hole is formed.
The changeover switch according to claim 1 , wherein the changeover switch is provided. On the front part of the edge cover above the handle storage hole, a name seal indicating the electrical equipment is affixed,
First and second state display stickers indicating the on and off states of the changeover switch are respectively attached to the left and right lower sides of the name sticker.
The changeover switch according to claim 6, wherein:

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