JP5253347B2 - switch - Google Patents

Description

  The present invention relates to a switch that opens and closes an electric circuit by tilting an operation unit, and relates to a switch having a malfunction prevention function.

  In order to prevent the malfunction of the switch that opens and closes the electric circuit by tilting the conventional operation unit, the engagement protrusion of the cap over the lever is engaged with the notch provided at the upper end of the sleep, and the cap is held in the locked state. There was a lock lever toggle switch (see Patent Document 1 below) that lifts and disengages the notch and tilts the lever.

Japanese Utility Model Publication No. 63-89643

  However, the lock lever toggle switch described above has a problem that the lever is tilted after the cap is pulled up to disengage from the sleep notch, so that the operation is complicated and the operability is impaired.

  In view of the above situation, an object of the present invention is to provide a switch that prevents malfunction without impairing operability.

In order to achieve the above object, the present invention provides
[1] In a switch for opening and closing an electric circuit by tilting an operation section disposed in a tiltable manner in the case, the operation section includes two buttons that are rotatably coupled at a substantially central portion, and each of the buttons. It consists of two tilting elements that are pivotably coupled, and a transducer that is pivotally coupled to the coupling portion of the two buttons, and a protrusion is formed on the converter, and the protrusion is formed on the case. By engaging the recessed portion, the tilting operation of the operation portion is suppressed, and when the converter is pushed down, the engagement between the protrusion and the recess is released, and the tilting operation can be performed. It is characterized by.
[2] In the switch according to [1], when the substantially central portion of the operation portion is pressed, the converter is pushed downward in conjunction with each other, and the engagement between the protrusion and the recess is released. It is characterized by.
[3] In the switch described in [1], the two buttons are formed in a substantially L shape by standing an operation piece from a bottom surface portion, and the switch is linked downward by grasping the operation piece. And the engagement between the protrusion and the recess is released.
[4] In the switch according to [1], the two tilters are formed with tilting shafts, the tilting shafts are rotatably engaged with holes formed in the case, and the tilting shafts are fulcrums. Thus, the operation portion is tilted and the contact mechanism is operated by the rotation of the tilting shaft.
[5] The switch according to [1], wherein the operation unit and the contact mechanism are configured as independent units.
[6] The switch according to [3], wherein an arm is rotatably disposed on one of the operation pieces.

According to the present invention, the following effects can be achieved.
(1) Since the lock can be released by pressing the operation portion, the operation from the lock release to the tilting operation can be performed with a smooth operation, so that the malfunction can be prevented without impairing the operability.
(2) Since the operating force required for the tilting operation is distributed by providing the two tilting elements, a large operating force becomes unnecessary and the operation can be performed lightly.
(3) Since a contact mechanism can be coupled to each of the two tilters, different contact mechanisms can be operated at the same time with one operation unit.
(4) Since the operation unit and the contact mechanism are independent units, even when the basic insulation of the contact mechanism unit is broken, the operation unit unit can protect against electric shock, so that a double insulation structure can be realized.
(5) Since the operation unit and the contact mechanism are independent units, the number of poles can be easily changed only by changing the number of coupling of the contact mechanism units.
(6) Since the operation unit and the contact mechanism are independent units, various contact mechanisms can be accommodated by replacing the contact mechanism unit as long as the contact mechanism operates with the rotation of the tilting shaft.
(7) Since the lock can be released by picking the operation piece, it is possible to perform the operation from the unlocking to the tilting operation with a smooth and natural operation, so that the malfunction can be prevented without impairing the operability.
(8) Since the arm is provided on one of the operation pieces, the holding of the locked state and the unlocked state can be easily switched.

It is a disassembled perspective view of the operation part of the switch which shows the 1st Example of this invention. It is a perspective view of the operation part of the switch which shows the 1st Example of this invention. It is a figure which shows operation | movement of the operation part of the switch which shows the 1st Example of this invention. It is a disassembled perspective view of the contact mechanism of the switch which shows the 1st Example of this invention. It is a perspective view of the contact mechanism of the switch which shows the 1st Example of this invention. 1 is a perspective view of a switch showing a first embodiment of the present invention. It is a figure which shows operation | movement of the contact mechanism of the switch which shows 1st Example of this invention. It is a disassembled perspective view of the operation part of the switch which shows the 2nd Example of this invention. It is a figure which shows operation | movement of the operation part of the switch which shows the 2nd Example of this invention. It is a front view of the operation part of the switch which shows the application example of 2nd Example of this invention.

  The present invention is configured such that the lock mechanism disposed in the operation unit can be released without performing troublesome operations. Therefore, malfunction can be prevented without impairing operability.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view of an operation portion of a switch showing a first embodiment of the present invention, FIG. 2 is a perspective view of an operation portion of the switch showing the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. It is a figure which shows operation | movement of the operation part of the switch which shows an example, FIG.3 (a) is before operation, FIG.3 (b) is in the middle of operation, FIG.3 (c) is after operation. 4 is an exploded perspective view of the contact mechanism of the switch according to the first embodiment of the present invention, FIG. 5 is a perspective view of the contact mechanism of the switch according to the first embodiment of the present invention, and FIG. 6 is the first embodiment of the present invention. 7 is a perspective view of a switch showing an example, FIG. 7 is a view showing the operation of the contact mechanism of the switch showing a first embodiment of the present invention, FIG. 7 (a) is before operation, FIG. 7 (b) is during operation, FIG. 7C is after the operation.

  1 and 2, 1 is a first button, 2 is a second button, 3 is a first tilting element, 4 is a second tilting element, 5 is a connector, and 6 is a first button 1 and a second button. 1 is a pin for rotatably connecting the tilting element 3 and the connector 5, 7 is a pin for rotatably connecting the second button 2, the second tilting element 4 and the connector 5, and 8 is a converter. 9 is a coil spring disposed on the upper surface of the connector 5, 10 is a pin that rotatably couples the first button 1, the second button 2, and the converter 8, 11 is an operation unit case, and 12 is a tension spring. , 13 are operation unit case covers.

  The first button 1 has a pair of bearing holes 1a and 1b, and the second button 2 has the same shape as the first button 1 and has a pair of bearing holes 2a and 2b. The first tilting element 3 is formed in an H shape by providing notches on both short side surfaces of the flat plate, and a pair of bearing holes 3a and a pair of tilting shafts 3b are formed on one end and between the notches. A hooking hole 3c for hooking the tension spring 12 is formed. The second tilting element 4 has a pair of bearing holes 4a formed on one short side surface of the flat plate, and a tilting shaft 4b formed on the other short side surface. The connector 5 has a substantially flat plate shape, bearing holes 5a and 5b are formed in the vicinity of both short side surfaces, and a bearing hole 5c penetrating vertically is formed in a substantially central portion. The converter 8 has a pair of protruding pieces 8a formed along the short side surface of the substantially rectangular bottom surface portion, and a substantially cylindrical sliding shaft 8b formed in the same direction as the protruding piece 8a at the substantially central portion. In the protruding piece 8a, a bearing hole 8c is formed in the vicinity of the tip portion, and a guide protrusion 8d is formed in the vicinity of the bottom surface portion.

  A bearing hole 3a of the first tilter 3 is disposed between the bearing holes 1a of the first button 1, a bearing hole 5a of the connector 5 is disposed between the tilting shafts 3a, and the bearing holes 1a, 3a. And the pin 6 is press-fitted into 5a and 5a, and the first button 1, the first tilting element 3 and the connector 5 are coupled rotatably. A bearing hole 4a of the second tilting element 4 is disposed between the bearing holes 2a of the second button 2, a bearing hole 5b of the connector 5 is disposed between the tilting shafts 4a, and the bearing holes 2a, 4a. Pins 7 and 5b are press-fitted, and the second button 2, the second tilting element 4 and the connector 5 are rotatably coupled. A pin 10 is press-fitted into the bearing hole 1b of the first button 1, the bearing hole 2b of the second button 2, and the bearing hole 8c of the converter 8, so that the first button 1, the second button 2, and the converter 8 are It is coupled so that it can rotate freely. At this time, the coil spring 9 is placed on the bearing hole 5c of the connector 5, and the sliding shaft 8b of the converter 8 is inserted through the bearing hole 5c and the coil spring 9 to constitute an operation unit.

  A tension spring 12 is hooked between the hooking hole 3 c of the first tilter 3 and a hooking projection 11 a formed in the operation portion case 11, and the operation portion is disposed in the operation portion case 11. At this time, the tilting shafts 3b and 4b of the first tilting element 3 and the second tilting element 4 are respectively engaged with bearing holes 11b formed in the operation portion case 11, and the guide protrusion 8d of the converter 8 is It is engaged with the engaging recess 11 d of the guide groove 11 c formed in the operation portion case 11. And the operation part case cover 13 is covered by the operation part case 11, the fitting convex part 11f formed in the recessed part 11e of the operation part case 11, and the fitting hole 13b formed in the protrusion 13a of the operation part case cover 13. Are fitted. At this time, the tilting shafts 3b and 4b of the first tilting element 3 and the second tilting element 4 are engaged with the bearing holes 13c, respectively, and the hooking projections 11a of the operation portion case 11 are engaged with the engaging holes 13d. As a result, the operation unit 23 is completed.

  As shown in FIG. 3, the operation portion of the switch of the present invention configured as described above tilts because the guide protrusion 8d is engaged with the engagement recess 11d of the guide groove 11c when the operation portion is not pressed. Operation is suppressed. When the vicinity of the coupling portion between the first button 1 and the second button 2 is pressed, the converter 8 is pushed down, the engagement between the guide projection 8d and the engagement recess 11d is released, and the tilting operation becomes possible. When the first and second buttons 2 are operated in the right direction, the first tilting element 3 and the second tilting element 4 tilt in the right direction with the tilting shafts 3b and 4b as fulcrums. Then, the second tilting element 4 abuts against the inclination of the inner side surface of the operation unit case 11 and the state of the operation unit is maintained by the biasing force of the tension spring 12. The coupling portion of the second button 2 is pushed up by the coil spring 9, and the converter 8 is pushed up in conjunction with the engagement of the guide projection 8d and the engaging recess 11d to complete the operation. At this time, the tilting shafts 3b and 4b are rotated in accordance with the operation of the first button 1 and the second button 2, and the electric circuit is opened and closed by operating the contact mechanism coupled to the tilting shafts 3b and 4b by this rotation. I do.

In this way, the switch operating portion shown in this embodiment can be unlocked by pressing the operating portion, so there is no troublesome operation, and since the tilt operation can be performed from unlocking smoothly, the operability is improved. It has a feature that malfunction can be prevented without loss.
Since the first tilting element 3 and the second tilting element 4 are provided, the force required for the tilting operation is distributed, so that a large operating force is unnecessary and a light operation feeling is obtained. doing. Further, since the contact mechanisms can be coupled to the tilting shafts 3b and 4b, a plurality of contact mechanisms can be operated simultaneously by one operation.
Since the operation unit and the contact mechanism are independent units, the operation unit unit 23 can protect against electric shock even when the basic insulation of the contact mechanism is broken. In addition, since the operation unit and the contact mechanism are independent units, various contact mechanisms can be accommodated by replacing the contact mechanism unit as long as the contact mechanism operates with the rotation of the tilting shafts 3b and 4b.

  4 and 5, an example of the contact mechanism operated by the operation unit 23 is shown. Here, a structure in which the contact mechanism is coupled only to the tilt shaft 3b will be described. 14 is a movable contact piece, 15 is a first movable contact cover, 16 is a second movable contact cover that is fitted to the first movable contact cover 15 and sandwiches the movable contact piece 14, and 17 is a contact mechanism. Case 18 is a tension spring that is hooked to first movable contact cover 15 and contact mechanism case 17, 19 is a terminal disposed in contact mechanism case 17, and 20 is contact mechanism case 17 so as to cover terminal 19. The terminal cover 21 is fitted to the contact mechanism case 17, the contact mechanism case cover 21 is fitted to the contact mechanism case 17, and the screw 22 is screwed to the contact mechanism case 17. The movable contact piece 14 is formed by bending a plate-like conductive member into an arc shape, and projecting pieces 14a are formed at both ends of the arc toward the outer side of the arc. The projecting pieces 14a have fixed contacts 19a and 19 Contacts 14b and 14c are provided in contact with 19b, respectively. The first movable contact piece cover 15 is formed with a hooking protrusion 15a for hooking the tension spring 18 and a rotation shaft 15b, and the second movable contact piece cover 16 is formed with a rotation shaft 16a, and the rotation shaft 15b. And 16a.

  The movable contact piece 14 is engaged with the first movable contact piece cover 15, and the second movable contact piece cover 16 is fitted to the first movable contact piece cover 15 so that the movable contact piece 14 is sandwiched. . At this time, one of the tension springs 18 is hooked on the hooking protrusion 15 a of the first movable contact piece cover 15. The side surfaces of the contact mechanism case 17 are such that the fixed contacts 19 a and 19 b protrude from the terminal insertion hole 17 a to the inside of the contact mechanism case 17 and the fixed contact pieces 19 c and 19 d are disposed on the bottom surface of the contact mechanism case 17. The terminal cover 20 is covered from the side where the terminal 19 of the contact mechanism case 17 is disposed, and the fitting convex part 17c formed in the concave part 17b and the fitting hole 20b formed in the protruding piece 20a are fitted. Combined. The movable contact piece 14 sandwiched between the first movable contact cover 15 and the second movable contact cover 16 is disposed in the contact mechanism case 17 in which the terminal 19 is disposed. The rotary shaft 15b of the single cover 15 is engaged with the bearing holes 17e and 20c, and the other of the tension springs 18 is hooked on the hooking protrusion 17d. The contact mechanism case cover 21 is covered with the contact mechanism case 17, and the fitting convex portion 17g formed in the concave portion 17f and the fitting hole 21b formed in the protruding piece 21a are fitted. At this time, the rotating shaft 16a of the second movable contact cover 16 is engaged with the bearing hole 21c. Then, the screw 22 is screwed into the contact mechanism case 17 from below the contact mechanism case 17 through the through holes 19e and 19f formed in the fixed contact pieces 19c and 19d, whereby the contact mechanism unit 24 is completed. .

  Then, as shown in FIG. 6, the operation portion unit 23 and the contact mechanism unit 24 are coupled by coupling the coupling holes 11 g, 13 e, 17 h, 20 d, and 21 d of each component with the coupling pin 25. At this time, the tilting shaft 3b of the first tilting element 3 and the rotating shaft 15b of the first movable contact piece cover 15 are fitted, whereby the switch 26 is completed.

  As shown in FIG. 7, the switch of the present invention configured as described above presses the vicinity of the coupling portion of the first button 1 and the second button 2 and pushes down the transducer 8 downward to guide guide projection 8d. When the engagement of the engaging recess 11d is released and the first button 1 and the second button 2 are operated in the right direction, the tilting shaft 3b rotates to the right. By this rotation, the rotating shaft 15b of the first movable contact piece cover 15 fitted to the tilting shaft 3b rotates. With this rotation, the movable contact piece 14 rotates, and the contacts 14b and 14c of the movable contact piece 14 come into contact with the fixed contacts 19a and 19b of the terminal 19, respectively. At this time, the movable contact piece 14 is secured with a sufficient contact force between the contact points by the biasing force of the tension spring 18. Further, when the first button 1 and the second button 2 are operated leftward, the tilting shaft 3b rotates to the left, and the rotation shaft 15b rotates by this rotation. With this rotation, the movable contact piece 14 rotates, the contacts are separated, and the terminals 19 are opened. At this time, when the operation displacement of the first button 1 and the second button 2 exceeds a certain amount, the first movable contact piece cover 15 is biased in the separating direction by the tension spring 18, thereby moving the movable contact piece. 14 is also energized, and a contact gap is instantly secured. When the switch 26 is attached to a panel (not shown), the fixing hole 11h provided in the operation unit case 11 is screwed with a screw hole provided in the panel and a screw (not shown).

As described above, in the switch shown in this embodiment, when the operation portion is not pressed, the guide protrusion 8d is engaged with the engagement recess 11d of the guide groove 11c, so that the tilting operation is suppressed, and the first button 1 When the vicinity of the coupling portion of the second button 2 is pressed, the converter 8 is pushed downward and the engagement between the guide projection 8d and the engagement recess 11d is released, thereby enabling the tilting operation. Since the tilting shaft 3b rotates in accordance with the operation of the second button 2, the movable contact piece 14 is rotated to open and close the electric circuit, so that the tilting operation can be smoothly performed from unlocking without troublesome operation. , It is possible to prevent malfunction without impairing operability.
In addition, since the operation unit and the contact mechanism are independent units, a double insulation structure can be realized and various contact mechanisms can be easily handled.

  In this embodiment, the movable contact piece is an arc-shaped contact mechanism. However, if the contact mechanism is coupled to the tilting shaft that rotates in accordance with the operation of the button and moves in accordance with the rotation, the movable contact piece is used. The shape can be changed in various ways, and a contact mechanism using a movable contact piece such as a plate shape or a disk shape may be used. In addition, the movable contact piece is coupled to only one tilting shaft, but it may be coupled to each of the two tilting shafts, and the mounting method to the panel may be a one-touch mounting with a resin spring. Conceivable.

  FIG. 8 is an exploded perspective view of the operation part of the switch according to the second embodiment of the present invention. FIG. 9 is a view showing the operation of the operation part of the switch according to the second embodiment of the present invention. Is before operation, FIG. 9B is during operation, and FIG. 9C is after operation. FIG. 10 is a diagram showing an application example of the second embodiment of the present invention. FIG. 10 (a) is an arm that holds the operation unit in a locked state or unlocked state, and FIG. 10 (b) is a state that is locked by the arm. FIG. 10 (c) shows the operation unit held in an unlocked state by the arm, and FIG. 10 (d) shows when the arm is stored.

  In FIG. 8, 31 is a first button, 32 is a second button, 33 is a first tilter, 34 is a second tilter, 35 is a connector, and 36 is a first button 31 and a first button. A pin for rotatably connecting the tilting element 33 and the connector 35, 37 is a pin for rotatably connecting the second button 32, the second tilting element 34 and the connector 35, 38 is a converter, 39 is A coil spring disposed on the upper surface of the connector 5, 40 is a pin that rotatably couples the first button 31, the second button 32, and the converter 38, 41 is an operation unit case, 42 is a tension spring, 43 Is an operation unit case cover.

  The first button 31 is formed in an approximately L shape with an operating piece 31a standing from the bottom surface, a pair of bearing holes 31b is formed on the bottom surface, and a bearing hole 31c is formed in the vicinity of the approximately L-shaped refracting portion. Has been. The second button 32 has the same shape as the first button 31 and is formed in an approximately L shape with an operating piece 32a standing from the bottom surface, and a pair of bearing holes 32b are formed in the bottom surface. A bearing hole 32c is formed in the vicinity of the L-shaped refracting portion. The first tilting element 33 is formed in an H shape by providing notches on both short side surfaces of the flat plate. A pair of bearing holes 33a and a pair of tilting shafts 33b are formed on one end, and a tension is formed between the notches. A hooking hole 33c for hooking the spring 42 is formed. The second tilting element 34 has a pair of bearing holes 34a formed on one short side surface of the flat plate, and a tilting shaft 34b formed on the other short side surface. The connector 35 has a substantially flat plate shape, bearing holes 35a and 35b are formed in the vicinity of both short side surfaces, and a bearing hole 35c penetrating vertically is formed in a substantially central portion. The converter 38 has a pair of protruding pieces 38a formed along the short side surface of the substantially rectangular bottom surface portion, and a substantially cylindrical sliding shaft 38b formed in the same direction as the protruding piece 38a at the substantially central portion. A bearing hole 38c is formed in the vicinity of the tip of the projecting piece 38a, and a guide protrusion 38d is formed in the vicinity of the bottom of the projecting piece 38a.

  A bearing hole 33a of the first tilting element 33 is disposed between the bearing holes 31b of the first button 31, and a bearing hole 35a of the connector 35 is disposed between the tilting shafts 33a, thereby bearing holes 31b and 33a. The first button 31, the first tilting element 33, and the connecting element 35 are rotatably coupled to each other by inserting a pin 36 into the first and second buttons 35a and 35a. A bearing hole 34a of the second tilter 34 is disposed between the bearing holes 32b of the second button 32, a bearing hole 35b of the connector 35 is disposed between the tilting shafts 34a, and the bearing holes 32b and 34a. A pin 37 is inserted into the second button 32, the second tilting element 34, and the connecting element 35 so as to be freely rotatable. The pin 40 is inserted into the bearing hole 31c of the first button 31, the bearing hole 32c of the second button 32, and the bearing hole 38c of the converter 38 so that the first button 31, the second button 32, and the converter 38 are connected. It is coupled so that it can rotate freely. At this time, the coil spring 39 is placed on the bearing hole 35c of the connector 35, and the sliding shaft 38b of the converter 38 is inserted into the bearing hole 35c and the coil spring 39 to constitute an operation unit.

  A tension spring 42 is hooked between the hooking hole 33 c of the first tilting element 33 and a hooking protrusion 41 a formed in the operating portion case 41, and the operating portion is disposed in the operating portion case 41. At this time, the tilting shafts 33b and 34b of the first tilting element 33 and the second tilting element 34 are respectively engaged with the bearing holes 41b formed in the operation portion case 41, and the guide protrusion 38d of the converter 38 is It is engaged with an engaging recess 41 d of a guide groove 41 c formed in the operation portion case 41. Then, the operation part case cover 43 is covered with the operation part case 41, the fitting convex part 41 f formed in the concave part 41 e of the operation part case 41 and the fitting hole 43 b formed in the projecting piece 43 a of the operation part case cover 43. Are fitted. At this time, the tilting shafts 33b and 34b of the first tilting element 33 and the second tilting element 34 are engaged with the bearing hole 43c, and the hooking protrusion 41a of the operation portion case 41 is engaged with the engaging hole 43d. As a result, the operation unit is completed. As in the first embodiment, the switch is completed by being coupled to the contact mechanism unit.

  As shown in FIG. 9, in the normal state of the operation portion of the switch of the present invention configured as described above, the operation pieces 31a and 32a are held at an interval, and the guide protrusion 38d is provided with a guide groove 41c. Since the engaging recess 41d is engaged, the tilting operation is suppressed. When the operation piece 31a and the operation piece 32a are picked, the converter 38 is pushed down, the engagement of the guide projection 38d and the engagement recess 41d is released, and the tilting operation is possible, and the operation piece 31a and the operation piece 32a are operated in the right direction. Then, the first tilting element 33 and the second tilting element 34 tilt to the right with the tilting shafts 33b and 34b as fulcrums. Then, the second tilting element 34 abuts against the inclination of the inner side surface of the operation unit case 41 and the state of the operation unit is maintained by the biasing force of the tension spring 42. The coupling portion between the button 31 and the second button 32 is pushed up by the coil spring 39, and the converter 8 is pushed up in conjunction with the guide projection 38d and the engaging recess 41d to complete the operation. At this time, the tilting shafts 33b and 34b rotate with the operation of the operation piece 31a and the operation piece 32a, and the electric circuit is opened and closed by operating the contact mechanism coupled to the tilting shafts 33b and 34b by this rotation.

  FIG. 10 shows an application example of this embodiment, in which an arm 44 is rotatably disposed on the operation piece 52 a of the second button 52. By engaging the arm 44 with the engagement protrusion 51b formed on the operation piece 51a, the operation pieces 51a and 52a cannot be closed, so that the locked state is maintained and the arm 44 is engaged with the engagement protrusion 51c. As a result, the operation pieces 51a and 52a remain closed, and the unlocked state is maintained. Further, when it is not necessary to maintain the state, the arm 44 can be accommodated by engaging the arm 44 with an engagement protrusion 52 b formed on the second button 52.

  In addition, this invention is not limited to said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The switch of the present invention can be used as a switch for preventing malfunction without impairing operability.

1, 31, 51 First button 2, 32, 52 Second button 1a, 1b, 2a, 2b, 3a, 4a, 5a, 5b, 5c, 8c, 11b, 13c, 17e, 20c, 21c, 31b, 31c, 32b, 32c, 33a, 34a, 35a, 35b, 35c, 38c, 41b, 43c Bearing hole 3, 33 First tilting element 3b, 4b, 33b, 34b Tilt shaft 3c, 33c Hanging hole 4, 34 First 2 tilters 5, 35 connectors 6, 7, 10, 36, 37, 40 pins 8, 38 converters 8 a, 38 a protruding pieces 8 b, 38 b sliding shafts 8 d, 38 d guide projections 9, 39 coil springs 11, 41 Operation part case 11a, 15a, 17d, 41a Engaging protrusion 11c, 41c Guide groove 11d, 41d Engaging recess 11e, 17b, 17f, 41e Recessed part 11f, 17c, 17g 41f fitting convex part 11g, 13e, 17h, 20d, 21d, 41g coupling hole 11h, 41h fixing hole 12, 18, 42 tension spring 13, 43 operation part case cover 13a, 14a, 20a, 21a, 43a projecting piece 13b, 20b, 21b, 43b Fitting holes 13d, 43d Engaging holes 14 Movable contact pieces 14b, 14c Contacts 15 First movable contact piece cover 15b, 16a Rotating shaft 16 Second movable contact piece cover 17 Contact mechanism case 17a Terminal insertion Hole 19 Terminal 19a, 19b Fixed contact 19c, 19d Fixed contact 19e, 19f Through hole 20 Terminal cover 21 Contact mechanism case cover 22 Screw 23 Operation unit 24 Contact mechanism unit 25 Connecting pin 26 Switch 31a, 32a, 51a, 52a Operation Piece 44 arm 51b, 51c, 52b engagement protrusion

Claims (6)

  In a switch for tilting an operation part disposed in a case to open and close an electric circuit, the operation part has two buttons that are rotatably connected at a substantially central part, and each button can be freely rotated. Two tilters coupled to each other, and a transducer pivotably coupled to the coupling portion of the two buttons. The transducer is formed with a protrusion, and the protrusion is formed on the case. The tilting operation of the operation portion is suppressed by engaging with the place, and the engagement between the protrusion and the recess is released by the downward movement of the converter, thereby enabling the tilting operation. Switch to do.   2. The switch according to claim 1, wherein when the substantially central portion of the operation portion is pressed, the converter is pushed downward in conjunction with each other to disengage the protrusion from the recess. switch.   2. The switch according to claim 1, wherein the two buttons are formed in a substantially L shape with an operation piece standing from a bottom surface portion, and the switch is pushed downward by interlocking with the operation piece. The switch, wherein the protrusion and the recess are disengaged.   2. The switch according to claim 1, wherein a tilting shaft is formed on the two tilters, the tilting shaft is rotatably engaged with a hole formed in the case, and the tilting shaft serves as a fulcrum. A switch characterized in that the operation mechanism tilts and the contact mechanism is operated by rotation of the tilting shaft.   The switch according to claim 1, wherein the operation unit and the contact mechanism are configured as independent units.   4. The switch according to claim 3, wherein an arm is rotatably disposed on one of the operation pieces.

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