JP6507812B2 - Separated operation switch - Google Patents

Description

  The present invention relates to a separate type operation switch that is used by combining a separated contact portion and an operation portion that operates opening and closing of the contact portion.

  Conventionally, there is a separate type operation switch in which an operating portion and a contact portion which are separately configured are connected to each other and the coupling is mutually locked (fixed) by a lock mechanism, and an example thereof is disclosed in Patent Document 1 Is shown.

  As shown in FIGS. 12 and 13, the operation switch described in Patent Document 1 includes an operation unit 201 having a push button and the like, and a contact unit 202. The contact portion 202 includes a lock lever 204. The operation unit 201 is inserted into the mounting hole of the mounting panel 101 from the front surface side of the mounting panel, and fixed to the mounting panel 101 by screwing the fixing nut 203 from the back surface side of the mounting panel. Next, the contact portion 202 is fitted according to the fitting position of the operation portion 201 and inserted into a fixed position, and then the lock lever 204 of the lock mechanism is rotated to the lock position to operate the contact portion 202 and the operation. Lock (lock) the connection with the part 201.

  As shown in FIGS. 14A and 14B, the lock mechanism is operated by turning the lock lever 204 provided on the contact portion 201 manually from the unlocked position (A) to the locked position (B). When the lock member 205 is rotated and the lock piece 251 provided on the lock member 205 is fitted into the lock groove 211d (see FIG. 12) provided on the operation unit 201, the contact portion 202 and the operation unit 201 are obtained. The connection is fixed to prevent the operation unit 202 from falling off from the operation unit 201.

  The lock lever 204 is moved to the unlocking position by the careless operation in a state in which the separate type operation switch in which the operation unit 201 and the contact unit 202 are coupled as described above is attached to the mounting panel and used. When connecting the contact portion 202 with the contact portion 202, the user may forget to turn the lock lever 204 to the lock position.

  In such a case, since the lock of the connection between the operation unit 201 and the contact unit 202 is released, when the push button of the operation unit 201 is pressed, the contact unit 202 is pressed by the pressing unit from the operation unit 201. May fall off from

  In such a separation type operation switch, a contact unit having a b contact (normally closed contact) configuration of the contact portion 202 when an accident occurs in which the contact portion 202 falls off from the operation portion 201 due to careless operation or the like of the lock lever. There is a danger that the electric circuit may malfunction.

  For the purpose of preventing the occurrence of an accident in which the contact portion is pulled out in the separated type operation switch as described above, in order to prevent the locking operation of the lock lever from being forgotten or the careless unlocking, FIG. As shown, it is proposed to provide a lock lever fixture 230.

  In FIG. 15, (A) shows the contact portion 202 of the separation-type operation switch before attaching the lock lever fixture 230, and (B) shows the separation-type operation switch with the lock lever fixture 230 attached. The contact portion 202 of FIG.

  When the lock lever 204 is pivoted to the left as illustrated in the state where the contact portion 202 is coupled to the operation portion 201 (not shown) here, the lock member 205 is pivoted and the lock piece 251 locks the operation portion 201 The coupling state is locked (fixed) by being fitted into the groove 211 d (see FIG. 12). This state is shown in FIG. 15A, and the lock lever fixture 230 has not been attached to the lock lever 204 yet. In this state, since the lock lever 204 is exposed, there is a possibility that the hand may be touched carelessly and the lock release position may be turned.

  Here, when the lock lever fixture 230 is fitted on the lock lever 204 from above, pushed into the guide groove 240 provided in the contact portion 202 and attached to the lock lever 204, the lock lever 204 is the lock lever fixture. It is fixed by 230.

  As a result, even if the lock lever 204 is accidentally touched, the rotation is blocked, so that it is possible to prevent the locking of the connection between the operation unit and the contact portion from being released carelessly.

Japanese Patent Application Publication No. 2003-308756 Unexamined-Japanese-Patent No. 10-228835 gazette JP 2003-323828 A

  As described above, in the conventional separate type operation switch, in order to fix (lock) the connection between the operation portion and the contact portion, it is necessary to turn the lock lever to the lock position, and both portions In order to prevent the connection from being inadvertently released, it is necessary to attach a lock lever fixture prepared in advance to the lock lever.

  Therefore, in such a conventional separate type operation switch, after the operation portion and the contact portion are coupled, the turning operation of the lock lever to the lock position is forgotten, or the lock lever fixing tool is attached to the lock lever. For example, the connection between the operation part and the contact part is not fixed (locked) or accidentally released, so that the contact part may come off from the operation part during operation of the operation switch. There is a problem of

  In order to solve such a problem, according to the present invention, when the contact portion is connected to the operation portion, the connection is automatically fixed (locked) and separation is performed so that the careless unlocking operation of the lock lever is difficult to be performed. It is an object of the present invention to provide a mold operation switch.

In order to solve the above problems, the present invention relates to a separation type operation switch in which an operation portion and a contact portion are configured to be separable.
A base portion detachably coupled to the contact portion is provided, and a coupling portion for coupling the operation portion is provided at an end portion of the base portion opposite to the coupled end portion of the contact portion, and the coupling portion And a lock piece having a lock piece on the inner periphery and rotatably disposed, and a lock spring for biasing the lock member to be positioned at a predetermined lock position. The lock member is rotated in the direction opposite to the lock position against the spring force of the lock spring in conjunction with the insertion operation of the operation unit into the connection unit of the base unit, and the operation unit is in the connection position When reached, the lock member is returned to the lock position by the spring force of the lock spring, and the lock piece is fitted in the lock groove provided in the operation portion to fix the connection between the base portion and the operation portion Is said, said base A plurality of contact units each having a switching contact mechanism can be connected in parallel so as to be able to be separated in parallel, and the connection unit to the contact portion of the base unit is A plurality of contact units each having an opening / closing contact mechanism can be connected in parallel so as to be able to be separated in parallel, and a pressing body supported so as to be vertically movable is provided on the base portion. The open / close contact mechanism urges the pressing body in the direction of the operation portion in a state in which the contact portion is coupled, and the pressing body is operated in the direction of the contact portion by operating the operation portion. The contact point is moved by acting on the switching contact mechanism to open and close the contact point (the invention of claim 1).

  In the invention of claim 1, the lock release control lever which protrudes to the outer periphery of the lock member of the base portion can be formed (the invention of claim 2).

In the invention of claim 2, a stopper is provided at the lock position of the lock member of the base portion so as to project from the base portion to lock the lock release operation lever, and the projection length of the stopper is the lock release operation. It is preferable to make the lever slightly longer than the lever (the invention of claim 3).

  In the first to third aspects of the present invention, the connecting groove for guiding the lock piece of the lock member is provided in the longitudinal direction on the outer periphery of the insertion portion of the operation portion into the base portion. It is preferable that a projection having an inclination and a lock groove for engaging a lock piece connected to the coupling groove be formed on the upper end of the projection (the invention of claim 4).

In the invention of the first to fourth aspects , each of the contact units can connect another contact unit in series (the invention of claim 5 ).

Furthermore, in the invention of claims 1 to 5, the contact unit having a switching contact mechanism having a b contact (normally closed contact) configuration is formed when the coupled base portion of the contact unit is separated from the operation portion, A mechanism may be provided to open the contacts when the contact unit is separated from the base portion or the other contact units (the invention of claim 6 ).

Furthermore, in the invention of the first to sixth aspects, in each of the contact units, the terminal screw of the terminal portion can be held by the terminal screw holder via the holding spring (the invention of claim 7 ).

  According to the present invention, the lock member rotatably provided at the coupling portion between the contact portion and the operation portion of the coupled base portion is biased by the lock spring to a predetermined lock position, and the operation portion is mounted on the base When inserting and connecting to the connecting part of the part, the lock member is interlocked with the insertion of the operating part and rotated in the direction opposite to the biasing direction of the lock spring, and the operating part is inserted to the connecting position. The connection between the operation member and the base member is fixed (locked) by returning the lock position toward the lock position and engaging the lock piece of the lock member with the lock groove of the operation portion. It can be done automatically.

  For this reason, the connection (fixing) of the connection between the operation part and the contact part connected via the base part is not forgotten, and the connection is surely performed. Therefore, it is possible to prevent the occurrence of an accident in which the contact portion falls off from the operation portion during use.

In addition, since the lock release control lever formed in the lock member is prevented from the operation in the lock release direction by the locking piece formed on the base portion, the careless lock release due to external contact or the like is prevented. Can.

The perspective view which shows the external appearance of 1st Example of the operation switch of the isolation | separation type of this invention. FIG. 1 is an exploded perspective view showing a configuration of a first embodiment of a separation type operation switch of the present invention. The longitudinal cross-sectional view which decomposes | disassembles and shows the structure of 1st Example of the operation switch of the isolation | separation type of this invention. The perspective view which disassembles and shows the structure of the base part used for the operation switch of the isolation | separation type of this invention. The perspective view which decomposes | disassembles and shows the structure of the contact point unit which comprises the contact point part of the isolation | separation type operation switch of this invention. Explanatory drawing of a coupling | bonding with the base part and the operation part in the isolation | separation type operation switch of this invention, and locking operation. Explanatory drawing of operation of the isolation | separation type operation switch of this invention. The longitudinal cross-sectional view which shows the state which the contact part isolate | separated from the operation part in the operation switch of the isolation | separation type of this invention. The longitudinal cross-sectional view which shows the state which the base part and the contact part isolate | separated from the operation part in the operation switch of the isolation | separation type of this invention. The structure of the 2nd Example of the operation switch of the isolation | separation type of this invention is shown, (A) is a perspective view, (B) is a longitudinal cross-sectional view. The structure of 3rd Example of the operation switch of the isolation | separation type of this invention is shown, (A) is a longitudinal cross-sectional view which shows the state before fastening of a terminal screw, (B) is a longitudinal cross which shows the fastening state of a terminal screw. Front view. The perspective view which shows the isolation | separation state of the conventional isolation | separation type operation switch. The side view which shows the connection state of the conventional isolation | separation type operation switch. The figure which shows typically the structure of the lock mechanism of the conventional isolation | separation type operation switch. The example of the lock mechanism provided with the lock lever fixture of the conventional isolation | separation type operation switch is shown, (A) is a front view of the principal part before attaching a lock lever fixture, (B) is a lock lever fixture. The front view of the principal part of the attachment state.

  An embodiment of the present invention will be described based on an example shown in the drawings.

  1 to 4 show a first embodiment of the separated type operation switch of the present invention. FIG. 1 is a perspective view showing the configuration of the coupled state of the operation switch according to the present invention, and FIGS. 2 and 3 are a perspective view and a longitudinal cross section showing the configuration of the separated state of the switch. And FIG. 4 is a perspective view which decomposes | disassembles and shows the base part 2 for connection used for this invention.

  The operation switch 100 includes the operation unit 1, the base unit 2 and the contact unit 3 which can be separated as shown in FIGS. 2 and 3.

  The operation unit 1 opens and closes the contacts of the contact unit 3 and includes an operation unit main body 11, a push button 12 and a mounting nut 13.

  The operating portion main body 11 has a tubular shape, and the press button 12 inserted therein is supported by the operating portion main body 1 so as to be pushable through the return spring 14. A screw 11 g is provided on the base end side of the outer periphery of the body portion 11 a of the operation portion main body 11. The fixing nut 13 is screwed into the screw 11g to fix the operation unit 1 to the mounting panel or the like. The push button 12 is provided with an operation shaft 12a that extends integrally into the body 11a.

  In addition, a plurality of coupling grooves 11b for coupling with the coupling base portion 2 are provided at appropriate intervals on the outer periphery of the trunk portion 11 of the operation portion main body. In the coupling groove 11b, a lock groove 11d for engaging the engagement piece of the base portion 2 is formed by a projection 11c having an inclination provided on the inner wall (see FIG. 2).

  The base portion 2 for connection is interposed between the operation portion 1 and the contact portion 3 to couple the both.

  This base part 2 is provided with the base main body 22 and the base cover 21 put on this, as shown to FIG. 3 and FIG. The cover 21 has a coupling hole 21a for coupling the main body 11 of the operation unit 1 at its central portion, an engagement hole 21b for engaging the engagement claw 22b of the base main body 22 on the opposite side, and a lock ring 23 A stopper 21c is provided to lock the unlocking operation piece 23b at the locking position.

  A lock ring 23 is rotatably disposed on the base body 22 and provided between the lock ring 23 and the base body 21 on a lock spring 24 for biasing the lock ring 23 toward the lock position. The lock ring 23c is rotated by the lock spring 24 until the operation piece 23b abuts against the stopper 21b of the cover 21 and is placed in the lock position. The operation piece 23b of the lock ring 23 is provided with an operation hole 23 for inserting and operating a tool such as a driver when the operation with a finger is difficult.

  On the inner periphery of the lock ring 23, a plurality of locking pieces 23a are provided at appropriate intervals corresponding to the engagement grooves 11d of the operation portion 1.

  The base portion 2 is further provided with a pressing body 25 for pressing a contact release lever 35 of the contact portion 3 described later. The pressing body 25 has an opening 25a at its central portion, and the engagement pieces 25c provided at two diagonal corners are inserted into the engagement grooves 22d of the base main body 22 from below. Engage vertically movably inside.

  The contact portion 3 is composed of at least one contact unit 3U having an open / close contact mechanism inside, and is coupled to the lower end side of the base portion 2, and the upper end side of the base portion 2 is coupled to the lower end side of the operation portion 1 Be done. Here, an example in which three contact point units 3U are coupled to the operation unit 1 via the base unit 2 is shown.

  One or more contact units 3U of the contact portion 3 are provided. The contact unit 3U includes one having an on-off contact mechanism with an a-contact (normally open contact) configuration and one having an on-off contact mechanism with an b-contact (normally closed contact) configuration.

  Here, an example using a contact unit 3U having a b contact configuration is shown, and the configuration is shown in FIGS. 3 and 5. FIG.

  The contact unit 3U includes a contact case 31 and a contact frame 32. A movable contact holder 33 holding a movable contact 34 having a movable contact 34 a is inserted into the contact frame 32, and the contact frame 32 supports the movable contact holder 33 so as to be vertically movable.

  Furthermore, the contact frame 32 is provided with a pair of coupling pieces 32a for coupling to the base portion 2, and the movable contact holder 33 is rotated through the pair of contact opening levers 35 via the support pin 35a and the biasing spring 35b. Support movable. The contact opening lever 35 contacts the shoulder 33b of the movable contact holder 33 and is turned by the biasing force of the biasing spring 35b, and biases the movable contact holder 33 in the pressing direction at one end thereof.

  A pair of fixed contacts 37 are fixedly supported on the left and right ends of the contact case 31. The fixed contact 37 has a fixed contact 37a at one end facing the movable contact 34a and has an external connection screw terminal 37b at the other end. Then, the terminal screw holder 38b holding the terminal screw 38 via the holding spring 38a is coupled by concavo-convex fitting at a position facing the screw terminal 37b of the fixed contact 37 of the contact case 31.

  The contact frame 32 supporting the movable contact holder 33 is inserted into the contact case 31 via the biasing spring 36 that biases the movable contact holder 33 in the return direction (upward direction), and is supported thereby.

  When the contact unit 3U is separated from the base portion 2, as shown in FIG. 3, the contact release lever 35 is biased in the direction to push down the movable contact holder 33 by the release spring 35b, thereby moving the movable contact holder 33 Since the movable contact 34a is separated from the fixed contact 37a of the fixed contact 37 by being pushed down, the switching contact mechanism of the b contact configuration is opened.

  The operation unit 1, the base unit 2 and the contact unit 3 separately configured as described above are mutually connected to constitute an operation switch 100 as shown in FIG. 1.

  When the operation switch 100 is configured, the contact portion 3 is connected to the base portion 2 in advance, and the connected base portion 2 of the contact portion 3 is connected to the operation portion 1; There is a case where the contact portion 3 is coupled to the base portion 2 coupled to the operation portion 1, but since the coupling between the respective parts is the same, individual couplings will be described.

  First, the connection between the base portion 2 and the contact portion 3 is performed by inserting the drive shaft 33b and the coupling piece 32a of the movable contact holder 33 of the contact portion 3 into the base portion 2 from below and engaging claws at the tip of the coupling piece 32a Can be performed by locking the locking portion 22 c of the base portion 2. Refer to the lower part of FIG. 9 for this coupling state.

  The connection between the operation unit 1 and the base unit 2 will be described with reference to FIG.

  In the state in which the base portion 2 is separated from the operation portion 1, the lock ring 23 is biased by the lock spring 24, and the lock release operation piece 23b is pivoted to a position where it strikes the stopper 21c as shown in FIG. Therefore, the lock projection 23a of the lock ring 23 is placed at the lock position R as shown in FIG.

  In this state, the fitting position of the operation unit 1 and the base unit 2 is matched, and the coupling hole 21a of the base unit 2 is fitted from below the operation unit 1 to the body 11a of the operation unit main body 11 of the operation unit 1. As a result, as shown on the right side of FIG. 6A, the lock protrusion 23 a provided on the inner periphery of the lock ring 23 of the base portion 2 intrudes into the coupling groove 11 b of the operation portion 1.

  From this state, the operation unit 1 is pushed relative to the base unit 2 in the direction of the arrow y in FIG. 6 (A). In this pushing process, the lock projection 23a of the base portion 2 comes into contact with the inclined surface rising to the left side of the projection 11b of the coupling groove 11b, and as shown by the arrow x in FIG. The inside of the groove 11b is raised while being relatively pushed in the left direction. Thereby, the lock ring 23 rotates clockwise, and as shown in FIG. 6B, the lock projection 23a reaches the uppermost end of the projection 11c of the coupling groove 11b, and the unlocking operation piece 23b of the lock ring 23 Away from the position of the stopper 21c, the position of the unlocking position U is reached.

  Subsequently, as shown in FIG. 6C relative to the base portion 2, when the operation portion 1 is pushed in the direction of the arrow y, the lock projection 23a relatively exceeds the projection 11c, and the lock of the coupling groove 11a is achieved. It rises to the groove 11d. In this position, since the locking of the lock ring 23 by the projection 11c is released, the lock ring 23 is rotated counterclockwise by the return force applied from the lock spring 24, and the operating piece 23b is in the lock position where the stopper 21c Will be returned. Therefore, the lock projection 23a of the lock ring 23 enters the lock groove 11d, and the connection between the operation unit 1 and the base unit 2 is fixed (locked), and the base unit 2 is prevented from relatively slipping out of the operation unit 1 Be done.

  Thus, the operation switch 100 as shown in FIG. 1 can be configured by mutually connecting the operation unit 1, the base unit 2 and the contact unit 3.

  When the base unit 2 and the contact unit 3 are coupled to the operation unit 1 as in the operation switch 100 of FIG. 1, the pressing body 25 in the base unit 2 is connected to the operation unit 1 as shown in FIG. It is pushed down by the lower end of body 11a. As a result, the other end of the contact opening lever 35 of the contact portion 3 is pushed down, and one end in contact with the movable contact holder 33 is raised. At this time, since the push button 12 is at the return position where the push operation is not performed, the movable contact holder 33 is pushed up by the return spring 36, and the movable contact 34a of the movable contact 34 constituting the b contact is the fixed contact of the fixed contact 37 Contact with 37a, the contacts are closed.

  Here, when the push button 12 is depressed as shown in FIG. 7B, the movable contact holder 33 of the contact portion 3 is pushed down by the operation shaft 12 a of the push button 12, so the movable contact 34 a of the movable contact 34 It separates from the fixed contact 37a of the fixed contact 37, and the electric circuit is opened.

  Next, the function for avoiding the malfunction of the electric circuit by the contact unit having the contact switching mechanism having the b contact configuration included in the operation switch 100 of the present invention will be described.

  A state in which the contact portion 3 is detached from the base portion 2 coupled to the operation portion 1 of the operation switch 100 is shown in FIG.

  In this case, when the contact release lever 35 of the contact portion 3 and the pressing body 25 of the base 2 are not in contact with each other, the contact release lever 35 is pivoted in the direction of pushing down the movable contact holder 33 by the return spring 35 b. As a result, the movable contact holder 33 is pushed down, the movable contact 34a is lowered, and the movable contact 34a is separated from the fixed contact 37a to open the electric circuit connected thereto and stop the operation of the electric circuit to prevent runaway of the electric circuit. Do.

  Further, FIG. 9 shows a state in which the contact portion 3 is dropped together with the base portion 2 from the operation portion 1 of the operation switch 100.

  In this case, the restriction by the operation shaft 12a of the operation portion 1 applied to the pressing body 25 of the base portion 2 is eliminated, and as shown in FIG. As it is rotated, the pressing body 25 is pushed up at the other end, and the movable contact holder 33 is pushed down at one end. As the movable contact holder 33 is depressed, the movable contact 34a is lowered to be separated from the fixed contact 37a, thereby opening the electric circuit connected thereto.

  As described above, according to the operation switch 100 of the present invention, when the contact portion 3 falls out of the base portion 2 coupled to the operation portion 1 and when the base portion 2 falls out of the operation portion 1 together with the contact portion 3 In any case, since the on / off contact mechanism of the contact portion 3 of the b contact configuration can be opened, the safety of the electric circuit to be opened and closed by the operation switch 100 can be enhanced.

  In the case of a contact unit with a contact configuration, when the contact part 3 falls off from the operation unit 1, the switching contact mechanism is originally opened, so a special configuration like a contact unit with b contact configuration is required. do not do.

  FIG. 10 shows a second embodiment of the present invention.

  In the second embodiment, contact units 3 coupled to the base unit 2 coupled to the operation unit 1 are coupled in multiple stages (two stages) with contact units.

  Here, three first stage contact units 3U1 are coupled in parallel to the base unit 2 coupled to the operation unit 1, and the second stage contact unit 3U2 is further connected to the first stage contact unit 3U1. It is connected in parallel. Although not shown here, it is also possible to couple the contact unit 3U3 of the third stage to the contact unit 3U2 of the second stage.

  As shown in FIG. 10B, the contact units are connected to each other by using an insertion hole 31c for the coupling piece 32a and a locking step 32d provided at the bottom of the contact case 31 of each contact unit. Insert the connecting piece 32a of the second stage contact unit 3U2 from the insertion hole 31c of the first stage contact unit 3U1, and then lock the hook of the end of the connecting piece 32a of the second stage contact unit 3U2 with the first stage. The second stage contact unit 3U2 is coupled to the first stage contact unit 3U1 by engaging the engagement step 31d of the contact unit 3U1.

  When the operation unit 1 is operated to depress the movable contact holder 33 of the first stage contact unit 3U1, this operation is directly transmitted to the movable contact holder 33 of the second stage contact unit, The contact units connected in multiple stages can all be opened and closed simultaneously.

  FIG. 11 shows a terminal screw according to a third embodiment of the present invention.

  11A shows a state before the terminal screw 38 is tightened to the external connection screw terminal 37b provided on the fixed contact 37 of the contact portion 3. FIG. 11B shows the terminal screw 38 in the contact portion 3 In the state of being tightened to the external connection screw terminal 37 b provided on the fixed contact 37 of FIG.

  The small diameter portion at the tip of the holding spring 38a is fitted to the neck portion of the terminal screw 38, and the large diameter portion on the base end side of the holding spring 38a is engaged and held by the terminal screw holder 38b.

  When the terminal screw 38 is screwed into the screw terminal 37b and tightened, as shown in FIG. 11B, the holding spring 38 is extended, so that the tightening of the terminal screw 38 is not inhibited. When the terminal screw 38 is unclamped, the holding spring 38 ba returns to the compressed state and is held in the terminal screw holder 38 b to prevent it from falling from the contact portion (contact unit).

100: separate type operation switch 1: operation section 11: operation section main body 11a: body section 11b: coupling groove 11c: projection 11d: lock groove 12: push button 2: base section 21: base section 22: base cover 22c: stopper 23 : Lock ring 23a: Lock projection 23b: Lock release operation piece 24: Return spring 25: Press body 3: Contact part 3U: Contact unit 31: Contact case 32: Contact frame 32a: Coupling piece 33: Movable contact holder 34: Movable contact Child 34a: Movable contact 35: Contact release lever 35b: Return spring (for contact release lever)
36: Return spring (for movable contact holder)
37: Fixed contact 37a: Fixed contact 37b: Screw terminal for external connection 38: Terminal screw 38a: Terminal screw holder 38b: Retaining spring

Claims (7)

In a separate type operation switch in which the operation portion and the contact portion are configured to be separable,
Providing a base part separably coupled to the contact part;
A coupling portion for coupling the operation portion is provided at an end of the base opposite to the coupled end of the contact portion,
The coupling portion has a lock piece on the inner periphery, a ring-shaped lock member rotatably disposed, and a lock spring biasing the lock member to a predetermined lock position. Interlocking with the insertion operation of the operation unit into the connection unit of the base unit, the lock member is rotated in the direction opposite to the lock position against the spring force of the lock spring, and the operation unit is connected When the position is reached, the lock member is returned to the lock position by the spring force of the lock spring, and the lock piece is fitted in the lock groove provided in the operation portion to connect the base portion and the operation portion. It is supposed to be fixed ,
The connection portion between the base portion and the contact portion is configured to be able to releasably connect a plurality of contact units each having a switching contact mechanism in parallel,
The base portion is provided with a pressing body supported so as to move up and down.
In the state where the base portion and the contact portion are coupled to the operation portion, the switching contact mechanism biases the pressing body in the direction of the operation portion.
A separate type operation switch characterized in that when the operation portion is operated, the pressing body moves in the direction of the contact portion and acts on the switching contact mechanism to open and close the contact .   2. The split type operation switch according to claim 1, wherein a lock release operation lever projecting to the outer periphery of the lock member of the base portion is integrally formed. A stopper is provided at the lock position of the lock member of the base portion so as to protrude from the base portion to lock the lock release operation lever, and the projection length of the stopper is slightly longer than the lock release operation lever. The separable operation switch according to claim 2, characterized in that   A connecting groove for guiding the lock piece of the lock member in the longitudinal direction is provided on the outer periphery of the insertion portion of the operation portion into the base portion, and the inner wall of the connecting groove has a projection having an inclination in the vertical direction The split type operation switch according to any one of claims 1 to 3, wherein a lock groove for locking piece engagement connected to the coupling groove is formed. The separate type operation switch according to any one of claims 1 to 4, wherein each contact unit is capable of connecting another contact unit in series. The contact unit having an open / close contact mechanism having a b contact (normally closed contact) configuration, when the coupled base portion of the contact unit is separated from the operation portion, and the contact unit is the base portion or other contact The separation type operation switch according to any one of claims 1 to 5, further comprising a mechanism that opens the contact when separated from the unit. The separate type operation switch according to any one of claims 1 to 6 , wherein the terminal screw of the terminal portion of each contact unit is held by a terminal screw holder via a holding spring.

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