JP2005228609A - Switching device, switch main part, and auxiliary contact unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it unnecessary to prepare two type devices with an auxiliary contact mechanism and without that, while the function as the contact mechanism is the same, to simplify stock management, and to cope easily with changes of the necessity of the auxiliary contact mechanism after mounting on an operation board or the like. <P>SOLUTION: An auxiliary contact unit 120 is removably fixed to the outer peripheral face of the main body 1. The auxiliary contact unit 120 is provided with an interlock member 23 which is made movable in the axis direction of the main body 1, and the auxiliary contact mechanism 31 to be opened and closed by the movement of the interlocking movement member 23, and the interlock member 21 is fitted into a continuous hole 1f of the main body 1. The continuous hole 1f is continued to a guide hole 1a into which a guide member 6 is fitted to be linked with an operation member 2 in the main body 1. The movement of the operation member 2 is propagated to the interlock member 23 via the guide member 6, and it is opened and closed by the auxiliary contact mechanism 31 in accordance with the movement of the operation member 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a switch device having a contact mechanism that opens and closes by a pressing operation of an operation member, and in particular, another auxiliary contact mechanism that opens and closes by a pressing operation of an operation member such as a monitoring contact mechanism that detects an operation position of the operation member. And a switch body and an auxiliary contact unit constituting the switch device.

  2. Description of the Related Art Conventionally, there is a switch device that is attached to an exterior panel or the like of an operation panel and opens and closes an internal contact mechanism by pressing an operation member. For example, when the operating member is in a non-operating position where the operating member is not operated, the operating member is sequentially stopped at the non-operating position, the intermediate stop position, and the maximum operating position in the pressing operation direction by a finger by the pressing operation of the operating member. Is turned off, the contact mechanism is turned on when the operation member is operated to the intermediate stop position, and the contact mechanism is switched off again when the operation member is further operated to the maximum operation position. Switch devices have been commercialized. This switch device is provided, for example, in a portable operation panel used for teaching an industrial robot or the like to ensure the safety of the operator.

  That is, in the portable operation panel connected to the control device that controls the operation of the robot, this switch device is provided together with an operation switch that outputs an operation signal corresponding to each of the various operations of the robot. When the operation member is operated up to the intermediate stop position and the contact mechanism of the switch device is in the ON state, the operation signal of each operation switch or the like is validated. On the other hand, when the operation member of the switch device is in the non-operation position or the maximum operation position, that is, when the contact mechanism of the switch device is in the OFF state, the operation signal of each operation switch or the like is invalidated.

  As a result, while the operator operates the operation member of the switch device to the intermediate stop position and operates the other operation switch etc. to operate the robot, the robot may When the operation is not performed, the operator releases the finger from the operation member of the switch device, or further presses the finger from the intermediate stop position to the maximum operation position to turn off the contact mechanism of the switch device. In addition, the robot operation can be stopped immediately regardless of the operation state of the operation switch or the like.

As such a switch device, the applicant has conventionally proposed various configurations (see, for example, Patent Documents 1 to 3).
JP 2001-035300 A JP 2002-042606 A International Publication No. 02/061779 Pamphlet

  However, in the switch device, for example, an auxiliary contact mechanism such as a monitor contact mechanism for outputting a detection signal of the operation position of the operation member and detecting the operation position of the operation member from the relationship with the state of the output signal of the contact mechanism. May be selectively provided. Conventionally, in consideration of such cases, it is necessary to prepare two types of switch devices having the same function as the contact mechanism, that is, those having an auxiliary contact mechanism and those having no auxiliary contact mechanism. There is a problem that inventory management becomes complicated. Also, if an auxiliary contact mechanism is required after a switch device without an auxiliary contact mechanism is mounted on the control panel, the entire switch device must be replaced, and the previously installed switch device is wasted. There is a problem that the equipment cost is so

  The object of the present invention is to provide an auxiliary contact mechanism detachably with respect to the switch body, and the two functions of the contact mechanism having the same function as the contact mechanism and the auxiliary contact mechanism not having the auxiliary contact mechanism. Switch device that can simplify the inventory management and can easily cope with changes in the necessity of the auxiliary contact mechanism after being mounted on the operation panel, and the switch An object of the present invention is to provide a switch body and an auxiliary contact unit constituting the apparatus.

As a means for solving the above problems, the present invention exhibits an open hollow shape at the upper and lower end portions, an operation member that is partially exposed from the upper end portion and reciprocated in the axial direction, and is connected from the lower end portion. A contact mechanism that exposes the terminal to the outside, and a guide member that interlocks with the operation member are housed, and an axial guide hole into which the guide member is fitted from the upper end side, and a continuous hole that is continuous with the guide hole are formed. Switch body,
An auxiliary contact unit that is detachably fixed to the switch body and includes an interlocking member that fits in the continuous hole so as to be movable in the axial direction of the switch body, and that houses an auxiliary contact mechanism that opens and closes by the movement of the interlocking member; It is characterized by comprising.

  In this configuration, the auxiliary contact unit is detachably fixed to the outer peripheral surface of the switch body. The auxiliary contact unit is provided with an interlocking member that is movable in the axial direction of the switch body, and an auxiliary contact mechanism that opens and closes by the movement of the interlocking member, and the interlocking member is fitted into a continuous hole of the switch body. The continuous hole is continuous with the guide hole into which the guide member that is linked to the operation member is inserted in the switch body. Therefore, the movement of the operation member is transmitted to the interlocking member via the guide member, and the auxiliary contact mechanism opens and closes according to the movement of the operation member.

  According to the present invention, when the auxiliary contact unit is mounted on the outer peripheral surface of the switch body, the interlocking member that operates the auxiliary contact mechanism in the auxiliary contact unit is inserted into the guide member that interlocks with the operation member in the switch body. Auxiliary contact mechanism that opens and closes in conjunction with the operation of the operation member depending on whether or not the auxiliary contact unit is mounted on the outer peripheral surface of the switch body by being fitted into a continuous hole that is continuous with the guide hole Can be added or deleted. As a result, it is not necessary to prepare two types of functions that have the same function as the contact mechanism and are provided with the auxiliary contact mechanism and those that do not include the auxiliary contact mechanism, thereby simplifying inventory management. In addition, it is possible to easily cope with a change in the necessity of the auxiliary contact mechanism after being attached to the operation panel.

  1A to 1C are a front sectional view, a side sectional view, and a bottom view showing a configuration of a switch device according to an embodiment of the present invention. A switch device 10 according to an embodiment of the present invention includes a switch body 110 and an auxiliary contact unit 120. The switch main body 110 has an operation member 2, a transmission member 3, a contact member 4, a driven member 5, a guide member 6, a first coil spring 7, a second coil, and the like within a main body 1 having a substantially cylindrical shape with upper and lower ends open. Coil spring 8, third coil spring 9, and microswitch (corresponding to the contact mechanism of the present invention) 11, 12.

  The operation member 2 has a hollow shape that is open on the lower surface, and a part of the operation member 2 is exposed to the outside from the upper end of the main body 1 and extends in the axial direction of the main body 1 between the non-operation position and the maximum operation position across the intermediate stop position. It can be reciprocated freely. The microswitches 11 and 12 are juxtaposed in the radial direction of the main body 1 at the lower end portion of the main body 1. The microswitches 11 and 12 include a movable contact 11a (12a) that selectively contacts the first fixed contact 11b (12b) and the second fixed contact 11c (12c). The movable contact 11a (12a) is attached in a direction to contact the first fixed contact 11b (12b) which is the upward direction in the axial direction of the main body 1 by the elastic force of the return spring 11d (12d) via the lever 11e (12e). It is energized.

  The driven member 5 has a lower end locked to the movable contact 11a (12a) of the microswitches 11 and 12 via a lever 11e (12e), and is movable in the axial direction of the main body 1 inside the main body 1. Yes. The first coil spring 7 and the second coil spring 8 are arranged on the upper and lower sides of the main body 1 substantially coaxially along the axial direction of the main body 1 with the transmission member 3 interposed therebetween. The second coil spring 8 located on the upper side of the transmission member 3 has an upper end held on the inner surface of the operation member 2 and a lower end held on the transmission member 3. The first coil spring 7 located below the transmission member 3 has an upper end portion held by the transmission member 3 and a lower end portion positioned in the main body 1.

  The abutting member 4 is movable between the initial position and the retracted position in the radial direction of the main body 1 with the upper surface always in contact with the operating member 2 inside the operating member 2. The third coil spring 9 is biased toward the initial position by the elastic force. The lower end portion of the contact member 4 selectively contacts the upper end of the driven member 5 and the upper surface of the transmission member 3. That is, when the contact member 4 is in the initial position (the state shown in FIG. 1B), the lower end is in contact with the upper end of the driven member 5 and the upper surface of the transmission member 3, and is positioned at the retracted position. In this state, the lower end portion does not contact the upper end of the driven member 5 and the upper surface of the transmission member 3. The mutual contact surfaces of the transmission member 3 and the contact member 4 and the upper end of the driven member 5 are configured by inclined surfaces inclined downward from the initial position of the contact member 4 toward the retracted position. In a state where no pressing force is applied to the operation member 2, a gap is provided between the lower surface of the contact member 4 and the upper end of the driven member 5.

  The guide member 6 is fixed to the operation member 2 at the upper end, and includes a shaft portion that fits into a guide hole 1 a formed in the main body 1 in the axial direction. The shaft portion of the guide member 6 is slidable in the guide hole 1 a along the axial direction of the main body 1. Further, ribs 1d protruding in the radial direction are formed at four circumferential positions on the inner peripheral surface of the main body 1, and groove portions 2a recessed in the radial direction are formed at four circumferential positions on the outer peripheral surface of the operation member 2. Is formed. Each rib 1d is fitted in each groove 2a. The longitudinal direction of each rib 1d and the groove 2a coincides with the axial direction of the main body 1. By the insertion of the shaft portion of the guide member 6 into the guide hole 1a and the insertion of the ribs 1d into the groove portions 2a, the operation member 2 is guided so that the moving direction thereof coincides with the axial direction of the main body 1. The operation member 2 can be operated in a stable state without causing an inclination in the direction of movement of the operation. In particular, with respect to the rib 1d and the groove portion 2a, as the pushing amount of the operation member 2 increases, the fitting amount of both increases, and the effect of preventing the inclination of the operation member 2 is increased.

  The third coil spring 9 is disposed in the operation member 2 at two locations where the second coil spring 8 is sandwiched in the single diameter direction of the main body 1 with the longitudinal direction (stretching direction) orthogonal to the diameter. . For this reason, an elastic force can be applied to the contact member 4 so that the contact member 4 can move stably from the two third coil springs 9.

  The second coil spring 8 and the third coil spring 9 are covered on the upper surface side by the operation member 2, and when the operation member 2 is removed from the main body 1, the upper surfaces of the second coil spring 8 and the third coil spring 9. Is exposed to the outside. Therefore, the second coil spring 8 and the third coil spring 9 can be detached from the inside of the main body 1 by removing the operation member 2 from the main body 1.

  Two second coil springs 8 are provided in a state in which the central axes coincide with each other, and one or three or more may be provided. One or more third coil springs 9 can also be provided. Thus, by providing each of the second coil spring 8 and the third coil spring 9 in a state where each one can be easily attached and detached, the operation force when moving the operation member 2 from the intermediate stop position to the maximum operation position is obtained. It can be easily adjusted to the condition of the operator's preference.

  The switch device 10 is fixed at a predetermined position of the casing by sandwiching the peripheral edge of the mounting hole in the casing between the step 1b formed on the outer peripheral portion of the main body 1 and the lock nut 1c. At this time, the switch device 10 has a waterproof structure by sandwiching the peripheral edge 41 of the opening in the bag-shaped waterproof cover 40 together with the peripheral edge of the attachment hole between the step 1b and the attachment screw 1c. Recesses 1e and 1e are formed in at least two places below the screwing position of the lock nut 1c on the outer peripheral surface of the main body 1.

  Further, inside the main body 1, a continuous hole 1 f is continuous with a lower end portion of the guide hole 1 a into which the shaft portion of the guide member 6 is fitted. The continuous hole 1 f opens at the bottom surface of the main body 1.

  2A to 2D are a plan view, a front view, a side view, and a bottom view of an auxiliary contact unit used in the switch device. FIGS. 3A to 3C are cross-sectional views of the auxiliary contact unit taken along lines AB, CD, and EF in FIG.

  The auxiliary contact unit 120 is made of a resin material and a thin ring-shaped mounting portion 21 that is partly cut out of the main body 1 of the switch main body 110 and a substantially rectangular parallelepiped storage portion 22 that stores the auxiliary contact mechanism. Become. Fitting pieces 21a and 21a are formed in the mounting portion 21 by two inverted U-shaped notches at two locations facing each other on the partial arc-shaped outer peripheral surface, and below the fitting pieces 21a and 21a. The operation pieces 21b and 21b extend. From the upper end portions of the fitting pieces 21a, 21a, projecting portions 21e, 21e each having an upper surface formed of an inclined surface extend in the horizontal direction. In addition, contact portions 21c and 21c extend in the horizontal direction at two locations on the inner side surface of the mounting portion 21 facing each other.

  An auxiliary contact mechanism 31 is accommodated in the accommodating portion 22. The auxiliary contact mechanism 31 includes fixed contacts 31a and 31a, movable contacts 31b and 31b, and a return spring 31c. The fixed contacts 31a and 31a are connected to connection terminals 31d and 31d extending from the bottom surface of the storage portion 22 to the outside. The movable contacts 31b and 31b are partially engaged with the stepped portion on the side surface of the interlocking member 23 disposed in the center of the auxiliary contact mechanism 31. The return spring 31 c has an upper end abutted on a portion of the movable contact 31 b, 31 b that is locked to the interlocking member 23 from below, and a lower end held on the bottom surface inside the storage portion 22.

  An opening 22 a is formed on the side surface of the storage portion 22 that faces the inside of the mounting portion 21. The interlocking member 23 is formed with a shaft body 23 a that is exposed from the opening 22 a toward the inside of the mounting portion 21. The shaft body 23 a extends upward via the inside of the mounting portion 21. The interlocking member 23 forming the shaft body 23 a is movable in the vertical direction (the axial direction of the switch body 1) in the storage portion 22.

  When the mounting portion 21 of the auxiliary contact unit 120 is externally fitted to the lower end portion of the switch main body 110 from below, the outer peripheral surface of the main body 1 in the switch main body 110 is formed on the fitting piece 21a of the mounting portion 21 in the auxiliary contact unit 120. It abuts against the projected protrusion 21e from above. As a result, the fitting piece 21a and the operation piece 21b are elastically deformed as indicated by a broken line in FIG. Further, when the outer fitting of the mounting portion 21 to the lower end portion of the switch main body 110 is continued, the protrusions 21e and 21e are formed on the outer peripheral surface of the main body 1 as shown by the solid line in FIG. It fits into the recesses 1e, 1e.

  At this time, the shaft body 23 a of the interlocking member 23 extending from the storage portion 22 of the auxiliary contact unit 120 is fitted into the continuous hole 1 f opened in the bottom surface of the main body 1. In the state where the operation member 2 is in the initial position in the switch body 110, the upper end of the shaft body 23a fitted in the continuous hole 1f is opposed to the lower end of the shaft portion 6a of the guide member 6 with a predetermined gap.

  When the operating member 2 is pressed and moved downward in the main body 1 from this state, the guide member 6 also moves downward together with the shaft portion 6a, and the lower end of the shaft portion 6a contacts the upper end of the shaft body 23a of the interlocking member 23. The guide member 6 presses the interlocking member 23 including the shaft body 23a downward.

  As described above, the downward movement due to the pressing operation of the operation member 2 is transmitted to the interlocking member 23 via the guide member 6, and the auxiliary contact mechanism stored in the storage portion 22 by the downward movement of the interlocking member 23. The 31 movable contacts 31b and 31b are separated from the fixed contacts 31a and 31a.

  Thereafter, when the operation member 2 moves upward toward the initial position in the switch body 110, the guide member 6 that has pushed the interlocking member 23 downward also moves upward. As a result, the interlocking member 23 is pushed up by the elastic force of the return spring 31c of the auxiliary contact mechanism 31, and the movable contacts 31b and 31b of the auxiliary contact mechanism 31 return to the state of contacting the fixed contacts 31a and 31a.

  In this way, the movable contacts 31b and 31b are brought into and out of contact with the fixed contacts 31a and 31a in the auxiliary contact mechanism 31 according to the vertical position of the operation member 2, and the output state of the signal from the auxiliary contact mechanism 31 changes. Therefore, in the case of FIG. 1, it can be detected from the signal output state of the auxiliary contact mechanism 31 that the operating member 2 is at the maximum operating position.

  On the other hand, as shown by a solid line in FIG. 1A, the protrusion 21e formed on the fitting piece 21a of the mounting portion 21 in the auxiliary contact unit 120 is formed in the recesses 1e and 1e formed on the outer peripheral surface of the main body 1. When the operation pieces 21b and 21b are pressed inward from the fitted state, the fitting pieces 21a and 21a and the operation pieces 21b and 21b are elastically deformed into a state indicated by a broken line in FIG. Accordingly, the protrusions 21e and 21e are not fitted in the recesses 1e and 1e, and the auxiliary contact unit 120 can be moved downward from the switch body 110 and removed.

  Further, since the auxiliary contact unit 120 is externally fitted below the fixed position (between the stepped portion 1b and the mounting screw 1c) of the switch body 110 with the housing, the auxiliary contact unit 120 is assisted without removing the switch body 110 from the housing. The contact unit 120 can be attached to and detached from the switch body 10.

  Note that the opening of the continuous hole 1f on the bottom surface of the main body 1 is closed in an easily openable state so that dust or the like inside the switch main body 110 when the auxiliary contact unit 120 is not attached to the switch main body 110 can be obtained. May be prevented from entering. Moreover, you may equip the opening of the continuous hole 1f with a detachable lid.

  4A to 4C are a front sectional view, a side sectional view, and a bottom view showing a configuration of a switch device according to another embodiment of the present invention. 5A to 5F are a plan view, a front view, a side view, a bottom view, and an A'-B 'portion showing the configuration of an auxiliary contact unit used in a switch device according to another embodiment. It is sectional drawing and C'-D 'part sectional drawing. The switch device 20 according to this embodiment is configured such that the auxiliary contact unit 220 is detachably fitted to the switch body 210 from the lateral direction.

  The auxiliary contact unit 220 is made of a pair of thin-walled arcuate mounting portions 221 and 221 that are externally fitted to the main body 211 of the switch main body 210 and a substantially rectangular parallelepiped storage portion 222 that stores the auxiliary contact mechanism. . The mounting portions 221 and 221 are formed with protrusions 221e and 221e having at least an inclined front surface from the inner peripheral surface so as to face each other, and operation pieces 221b and 221b extend from the outer peripheral surface to the rear surface side. .

  An auxiliary contact mechanism 231 is stored in the storage portion 222. The auxiliary contact mechanism 231 is configured in the same manner as the auxiliary contact mechanism 31 shown in FIGS.

  An opening 222 a is formed on the front surface of the storage portion 222. The interlocking member 223 is formed with a shaft body 223 a that is exposed from the opening 222 a toward the inside of the mounting portions 221 and 221. The shaft body 223a extends upward via the inside of the mounting portions 221 and 221. The interlocking member 223 that forms the shaft body 223 a is movable in the vertical direction (the axial direction of the switch body 211) in the storage portion 222.

  When the lower end portion of the switch body 210 is inserted into the mounting portions 221 and 221 from the front side of the auxiliary contact unit 120, the outer peripheral surface of the main body 211 of the switch body 210 is projected from the mounting portions 221 and 221 of the auxiliary contact unit 220. It contacts 221e and 221e from the front side. Further, when the insertion is continued, after the mounting portions 221 and 221 are elastically deformed outward as indicated by broken lines in FIG. 4C, the protrusions 221e and 221e are outer peripheral surfaces of the main body 1 as shown in FIG. The mounting portions 221 and 221 are externally fitted to the main body 211 as shown by the solid line in FIG. 4C.

  At this time, the shaft body 223 a of the interlocking member 223 extending from the storage portion 222 of the auxiliary contact unit 220 is fitted into the continuous hole 211 f opened in the side surface of the main body 211. In the state where the operation member 2 is in the initial position in the switch body 210, the upper end of the shaft body 223a fitted into the continuous hole 211f is opposed to the lower end of the shaft portion 6a of the guide member 6 with a predetermined gap.

  When the operating member 2 is pressed and moved downward in the main body 211 from this state, the guide member 6 also moves downward together with the shaft portion 6a, and the lower end of the shaft portion 6a contacts the upper end of the shaft body 223a of the interlocking member 223. The guide member 6 presses the interlocking member 223 including the shaft body 223a downward.

  Thus, the downward movement due to the pressing operation of the operation member 2 is transmitted to the interlocking member 223 via the guide member 6, and the auxiliary contact mechanism stored in the storage portion 222 by the downward movement of the interlocking member 223. The movable contacts 31b and 31b of 231 are separated from the fixed contacts 31a and 31a.

  Thereafter, when the operation member 2 moves upward toward the initial position in the switch body 210, the guide member 6 that has pushed the interlocking member 223 downward also moves upward. As a result, the interlocking member 223 is pushed up by the elastic force of the return spring 31c of the auxiliary contact mechanism 231, and the movable contacts 31b and 31b of the auxiliary contact mechanism 231 return to a state in contact with the fixed contacts 31a and 31a.

  In this way, the movable contacts 31b and 31b are brought into and out of contact with the fixed contacts 31a and 31a in the auxiliary contact mechanism 231 according to the vertical position of the operation member 2, and the output state of the signal from the auxiliary contact mechanism 231 changes. Accordingly, in the case of FIG. 4, it can be detected from the signal output state of the auxiliary contact mechanism 231 that the operation member 2 is at the maximum operation position.

  On the other hand, as shown by the solid line in FIG. 4C, the protrusions 221e and 221e formed on the mounting portion 221 of the auxiliary contact unit 220 are fitted into the recesses 211e and 211e formed on the outer peripheral surface of the main body 211. When the operation pieces 221b and 221b are pressed inward from the closed state, the mounting portions 221 and 221 including the protrusions 221e and 221e and the operation pieces 221b and 221b are elastically deformed into a state indicated by a broken line in FIG. As a result, the protrusions 221e and 221e do not fit into the recesses 211e and 211e, and the auxiliary contact unit 220 can be removed from the switch body 210 by moving it to the back side.

  Further, since the auxiliary contact unit 220 is externally fitted below the fixing position (between the stepped portion 1b and the mounting screw 1c) of the switch main body 210 with respect to the housing, the auxiliary contact unit 220 is auxiliary without removing the switch main body 210 from the housing. The contact unit 220 can be attached to and detached from the switch body 210.

  It should be noted that the opening of the continuous hole 211f on the side surface of the main body 211 is closed so that it can be easily opened, so that dust or the like inside the switch main body 210 when the auxiliary contact unit 220 is not attached to the switch main body 210. May be prevented from entering. Moreover, you may equip the opening of the continuous hole 211f with a detachable lid.

  Other configurations are the same as those of the switch device shown in FIGS. 1 to 3, and the same numbers as those in FIGS.

  The auxiliary contact unit may be detachably attached to the switch body through an opening of the connection terminal exposed downward from the bottom surface of the switch body.

  Although the case where the auxiliary contact unit is a normally closed contact has been described in the above embodiment, the present invention can be similarly applied to a case of a normally open contact.

  Moreover, it can also detect that the operation member 2 is a non-operation position or an intermediate | middle stop position by making the length of the shaft 23a of the interlocking member 23 longer than the embodiment.

1 is a front sectional view, a side sectional view, and a bottom view showing a configuration of a switch device according to an embodiment of the present invention. It is the top view of the auxiliary contact unit applied to the said switch apparatus, a front view, a side view, and a bottom view. It is sectional drawing of the AB part in FIG. 2, the CD part, and the EF part of the said auxiliary contact unit. It is the front sectional view, side sectional view, and bottom view which show the composition of the switch device concerning another embodiment of this invention. FIG. 6 is a plan view, front view, side view, bottom view, A′-B ′ section sectional view and C′-D ′ section sectional view showing the configuration of an auxiliary contact unit applied to the switch device according to another embodiment. is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Operation member 3 Transmission member 4 Contact member 5 Follower member 6 Guide member 10 Switch apparatus 11, 12 Micro switch (contact mechanism)
23 Interlocking member 110 Switch body 120 Auxiliary contact unit

Claims (3)

An operation member that has a hollow shape that is open at the upper and lower end portions, a part that is exposed to the outside from the upper end portion and reciprocates in the axial direction, a contact mechanism that exposes the connection terminal from the lower end portion, and the operation member A switch body in which an axial guide hole into which the guide member is fitted from the upper end side and a continuous hole continuous with the guide hole are formed.
An auxiliary contact unit that is detachably fixed to the switch body and includes an interlocking member that fits in the continuous hole so as to be movable in the axial direction of the switch body, and that houses an auxiliary contact mechanism that opens and closes by the movement of the interlocking member; A switch device comprising:   Connected from the lower end of the main body with an operating member that is hollow and partly exposed to the outside from the upper end of the main body and is reciprocally movable in the axial direction of the main body between the non-operating position and the maximum operating position A contact mechanism having a terminal exposed to the outside and a guide member interlocked with the operation member are accommodated inside, and the guide member is inserted into an axial guide hole from the upper end side, and is continuous with the guide hole. A switch body characterized by a continuous hole.   Auxiliary member that is fitted and fixed to the switch body on the outer peripheral surface of the switch body and that fits in the continuous hole of the switch body is movably movable in the axial direction of the switch body. An auxiliary contact unit that houses a contact mechanism.

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