JP6333167B2 - Switch, switch module and electric driver - Google Patents

Description

  The present invention relates to, for example, a switch used for forward / reverse operation of a motor, a switch module using a plurality of the switches, and an electric driver using the switch module. In particular, the configuration can be simplified and reduced in size. It relates to something devised so that it can be done.

An electric driver, for example, a medical electric driver, is often used in a relatively narrow space, and the miniaturization thereof is required. In order to reduce the size of the electric driver, for example, downsizing of the switch can be considered as one method. In order to reduce the size of the switch, it is conceivable to use a dome spring as a movable contact. For example, Patent Document 1 discloses a configuration of a switch using a dome spring.
In the switch described in Patent Document 1, the dome spring is used as a movable contact, and the movable contact is pressed and deformed to selectively conduct between two fixed contacts. .

FIG. 12 shows an example of an electric circuit when such a switch using a dome spring is used in, for example, an electric driver.
First, there is a power source 501, and this power source 501 has a configuration in which batteries 502 and 503 are connected in series via a polyswitch 505. The power source 501 is provided with a power source plus terminal 504 and a power source minus terminal 506.
A motor 507 is installed, and a first switch 509 is installed between the power supply plus terminal 504 and the motor plus terminal 508 of the motor 507. A second switch 511 is installed between the power supply plus terminal 504 and the motor minus terminal 510 of the motor 507.

  Each of the first switch 509 and the second switch 511 includes a movable contact 513 using a dome spring, a first fixed contact 515, and a second fixed contact 517. One end of the movable contact 513 is fixed to the first fixed contact 515, and the other end is always separated from the second fixed contact 517. When the movable contact 513 is pressed against the elastic force, the other end comes into contact with the second fixed contact 517, and the first fixed contact 515 and the second fixed contact 517 are electrically connected. .

Further, a first relay 519 and a second relay contact 521 are disposed in parallel between the motor plus terminal 508 of the motor 507 and the power source negative terminal 506 of the power source 501, and the motor minus terminal of the motor 507 is provided. A second relay 523 and a first relay contact 525 are installed in parallel between 510 and the power source minus terminal 506 of the power source 501.
The first relay contact 525 includes a first fixed contact 527, a second fixed contact 529, and a movable contact 531. Normally, the movable contact 531 is urged by an elastic member (not shown), and the first fixed contact 527 and the second fixed contact 529 are separated from each other. When the first relay 519 is operated, the movable contact 531 is pulled toward the first fixed contact 527 and the second fixed contact 529 against the elastic force of the elastic member (not shown), and the first fixed contact 527 The second fixed contact 529 conducts.
The second relay contact 521 has the same configuration as the first relay contact 525, and includes a first fixed contact 527, a second fixed contact 529, and a movable contact 531. Normally, the first fixed contact 527 and the second fixed contact 529 are separated from each other. When the second relay 523 is operated, the first fixed contact 527 and the second fixed contact 529 are electrically connected by the movable contact 531.

  When both the first switch 509 and the second switch 511 are not pressed, the motor plus terminal 508 and the motor minus terminal 510 of the motor 507 are electrically connected to the power source plus terminal 504 and the power source minus terminal 506. The motor 507 does not operate.

  When only the first switch 509 is pressed, the first fixed contact 515 and the second fixed contact 517 of the first switch 509 are brought into conduction, whereby the first relay 519 is operated, The first fixed contact 527 and the second fixed contact 529 of the first relay contact 525 are electrically connected by the movable contact 531. At this time, the motor plus terminal 508 of the motor 507 is electrically connected to the power source plus terminal 504 via the first switch 509, and the motor minus terminal 510 of the motor 507 is connected to the power source minus terminal via the first relay contact 525. The motor 507 is normally rotated.

  On the other hand, when only the second switch 511 is pressed, the first fixed contact 515 and the second fixed contact 517 of the second switch 511 are brought into conduction, thereby the second relay 523. Is operated, and the first fixed contact 527 and the second fixed contact 529 of the second relay contact 521 are conducted by the movable contact 531. At this time, the motor minus terminal 508 of the motor 507 is electrically connected to the power source plus terminal 504 via the second switch 511, and the motor plus terminal 508 of the motor 507 is connected to the power source minus terminal via the second relay contact 521. The motor 507 is reversely rotated.

A surge killer 533 is installed between the motor plus terminal 508 and the motor minus terminal 510 of the motor 507. The surge killer 533 prevents the contact of the first switch 509 and the like from being damaged due to the counter electromotive force of the motor 507 and the emission of electromagnetic noise to the surroundings.
For example, Patent Document 2 discloses a configuration for controlling forward / reverse rotation of a motor of an electric driver, although a dome spring is not used.

JP 2000-149703 A Japanese Patent No. 4551386

The conventional configuration has the following problems.
As described above, by using the first switch 509 and the second switch 511 that selectively make the two fixed contacts 515 and 517 conductive by the movable contact 513 formed of a dome spring, the current supplied to the motor 507 is reduced. If a circuit whose direction can be arbitrarily changed is to be configured, the first relay 519 and the second relay 521 need to be used, as shown in FIG. 12, and the circuit configuration becomes complicated and large. There has been a problem that the simplification and downsizing of the configuration of the electric driver is hindered.

  When both the first switch 509 and the second switch 511 are pressed simultaneously, the motor plus terminal 508 and the motor minus terminal 510 of the motor 507 are electrically connected to the power source plus terminal 504 and the first relay. Since the motor 519 and the second relay 523 are also operated, the motor plus terminal 508 and the motor minus terminal 510 of the motor 507 are also conducted to the power source minus terminal 506. For this reason, the power source plus terminal 504 and the power source minus terminal 506 of the power source 501 are short-circuited, and it is necessary to prevent the simultaneous pressing of the first switch 509 and the second switch 511. Therefore, simplification and miniaturization of the configuration of the electric driver are hindered.

  The present invention has been made based on such points, and an object thereof is to provide a switch, a switch module, and an electric driver capable of simplifying and downsizing the configuration.

In order to solve the above problem, the switch according to claim 1 is composed of a normally closed contact, a normally open contact, and an elastic member, and is normally brought into contact with the normally closed contact by its own elastic force and pressed against the elastic force. A movable contact that is moved away from the normally closed contact to be brought into contact with the normally open contact, and a push button member made of a soft material used when operating the movable contact is installed, There is a switch cover that accommodates the normally closed contact, the normally open contact, the movable contact, and an opening that accommodates the push button member and a part of the push button member is exposed to the outside. Is characterized in that a plate is provided between the switch cover and the edge of the push button member .
According to a second aspect of the present invention, in the switch according to the first aspect, the movable contact is a dome spring.
According to a third aspect of the present invention, there is provided a switch module characterized in that a plurality of the switches according to the first or second aspect are installed to form a module.
A switch module according to claim 4 is the switch module according to claim 3, wherein two of the switches are installed.
The switch module according to claim 5 is the switch module according to claim 4, wherein the seesaw member is installed, and when the movable contact of one switch is pressed and brought into contact with the normally open contact, the seesaw member The pressing of the movable contact of one switch is restricted, and when the movable contact of the other switch is pressed and brought into contact with the normally open contact, the pressing of the movable contact of one switch is restricted by the seesaw member. It is.
The switch module according to claim 6 is characterized in that, in the switch module according to claim 5, a pressing operation member for pressing the movable contact of the two switches via the seesaw member is provided. To do.
According to a seventh aspect of the present invention, in the switch module according to the sixth aspect, an intermediate operation member made of a rotating body is interposed between the pressing operation member and the seesaw member. It is what.
The switch module according to claim 8 is the switch module according to claim 7, wherein the intermediate operation member is a spherical member.
The switch module according to claim 9 is the switch module according to any one of claims 4 to 8, wherein the wiring member is inserted into the through hole provided in the normally closed contact of each of the two switches. In addition, a desired connection state is obtained by inserting a wiring member into a through hole provided in each normally open contact.
An electric driver according to a tenth aspect uses the switch or the switch module according to any one of the first to ninth aspects.
According to an eleventh aspect of the present invention, in the electric driver according to the tenth aspect, there is a fixing screw that passes through the switch cover and fixes the switch module, and the fixing screw is passed through the switch cover. The fixing screw through hole is formed, the head of the fixing screw has a tapered shape, and the fixing screw through hole is in contact with the head of the fixing screw. parts are formed, and features that you have an annular groove on the head of the fixing screw is being formed packing between the inner peripheral surface of the annular groove and the fixing screw through holes are inserted To do.
An electric driver according to claim 12 is the electric driver according to claim 10 or 11, which is for medical use.

As described above, the switch according to claim 1 is composed of a normally closed contact, a normally opened contact, and an elastic member, and is normally in contact with the normally closed contact by its own elastic force and pressed against the elastic force. And a movable contact that is separated from the normally-closed contact and is contacted with the normally-open contact by being operated, so that the movable contact itself has an elastic return force and is provided with a normally-closed contact. For example, the circuit for arbitrarily changing the direction of the current can be made a simple configuration, so that the device in which the switch is used can be downsized.
The switch according to claim 2 can be further reduced in size in the switch according to claim 1, since the movable contact is a dome spring.
In addition, since the switch module according to claim 3 is modularized by installing a plurality of the switches according to claim 1 or 2, the switch module can be miniaturized and the apparatus using the switch module can be miniaturized. Can do.
The switch module according to claim 4 can be downsized in the switch module according to claim 3 because the two switches are installed, and the apparatus using the switch module is also downsized. be able to.
The switch module according to claim 5 is the switch module according to claim 4, wherein the seesaw member is installed, and when the movable contact of one switch is pressed and brought into contact with the normally open contact, the seesaw member The pressing of the movable contact of the switch is restricted, and when the movable contact of the other switch is pressed and brought into contact with the normally open contact, the pressing of the movable contact of one switch is restricted by the seesaw member. And the other switch can be reliably prevented from being pressed simultaneously.
The switch module according to claim 6 is the switch module according to claim 5, wherein the pressing operation members for pressing the movable contacts of the two switches via the seesaw member are respectively installed. And the pressing member on the non-operation side is reliably returned to the original position by the action of the seesaw member.
According to a seventh aspect of the present invention, in the switch module according to the sixth aspect, an intermediate operation member made of a rotating body is interposed between the pressing operation member and the seesaw member. It becomes easy to do.
The switch module according to claim 8 is the switch module according to claim 7, wherein the intermediate operation member is a spherical member, so that the operation is further facilitated.
The switch module according to claim 9 is the switch module according to any one of claims 4 to 8, wherein the wiring member is inserted into the through hole provided in the normally closed contact of each of the two switches. At the same time, by inserting a wiring member into a through hole provided in each normally open contact, a desired connection state is obtained, so that the assembly of the switch module can be facilitated.
In addition, since the electric driver according to claim 10 uses the switch or switch module according to any one of claims 1 to 9, the configuration can be simplified and downsized.
In addition, since the electric driver according to the eleventh aspect is for medical use in the electric driver according to the ninth aspect, the configuration of the electric electric driver for medical use can be simplified and downsized.

It is a figure which shows one embodiment of this invention, and is a longitudinal cross-sectional view of an electric driver. It is a figure which shows one embodiment of this invention, and is the rear view which looked at the electric driver from the rear end side in the state which removed the battery pack and the adapter. It is a figure which shows one embodiment of this invention, and is an enlarged view of the III section of FIG. It is a figure which shows one Embodiment of this invention, and is an enlarged view of the IV section of FIG. It is a figure which shows one embodiment of this invention, and is a perspective view of a switch module. It is a figure which shows one embodiment of this invention, and is an exploded perspective view of a switch module. It is a figure which shows one embodiment of this invention, and is a disassembled perspective view of the module main body of a switch module. FIG. 8A is an exploded perspective view of the module main body of the switch module, in which only the upper plate is removed, and the upper plate is rotated so that its bottom side can be seen. FIG. 8B is a perspective view of the lower plate of the module body as viewed from the bottom side. 9A and 9B are diagrams illustrating an embodiment of the present invention, in which FIG. 9A is a cross-sectional view taken along the line IXa-IXa in FIG. 5, and FIG. 9B is a state in which the first switch is pressed and operated from the state of FIG. FIG. 9C is a cross-sectional view showing a state where the second switch is pressed and operated from the state of FIG. 9A. FIG. 10A is a cross-sectional view taken along the line Xa-Xa in FIG. 5, and FIG. 10B is a cross-sectional view taken along the line Xb-Xb in FIG. It is a figure which shows one embodiment of this invention, and is a circuit diagram which shows the structure of the electric circuit of an electric driver. It is a figure which shows a prior art example, and is a circuit diagram which shows the structure of the electric circuit of an electric driver.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. This embodiment shows an example in which the present invention is applied to a medical electric driver.
FIG. 1 is a longitudinal sectional view showing the overall configuration of the electric driver according to the present embodiment. First, there is a main body case 5. In the main body case 5, a through hole 7 is extended and formed along the axial direction (left and right direction in FIG. 1). The rear end side (the right end side in FIG. 1) of the through hole 7 serves as a motor storage portion 9. Further, the diameter of the through hole 7 on the front end side (left side in FIG. 1) of the motor storage portion 9 is reduced to form a spindle storage portion 11. Further, the diameter of the through hole 7 on the tip end side (the left side in FIG. 1) of the spindle storage portion 11 is increased to be a tip cap attachment portion 13.

  A motor 15 is accommodated and disposed in the motor accommodating portion 9. The motor 15 has a motor housing 17, and a stator (not shown) is provided in the motor housing 17, and a rotor (not shown) is rotatably installed inside the stator. A rotating shaft (not shown) is coaxially fixed to the rotor. Further, a speed reducer 18 is provided at the front end side (left side in FIG. 1) in the motor housing 17, and the rotation of a rotating shaft (not shown) of the motor 15 is decelerated by the speed reducer 18. Is output via.

  Further, as shown in FIG. 2, a plus terminal 21 and a minus terminal 23 of the motor 15 project and are arranged on the rear end surface of the motor 15 (surface on the front side in the direction perpendicular to the paper surface in FIG. 2).

  A wiring holding member 25 is installed on the rear end surface of the motor 15 (the surface on the front side in the direction perpendicular to the paper surface in FIG. 2). The wiring holding member 25 is made of a member having non-conductivity and heat resistance, for example, PEEK (Polyether ether Ketone) resin. The wiring holding member 25 has a substantially plate-like base portion 27. From both ends of the base portion 27 in the width direction (left and right direction in FIG. 2), surge killer holding convex portions 28 and 29 are shown in FIG. Projects and is formed on the front side in the vertical direction. Further, a surge killer holding convex portion 30 is projected and formed on the lower end side in FIG. 2 of the base portion 27 on the front side in the direction perpendicular to the paper surface in FIG. Also, wiring holding convex portions 31, 33, and 35 are projected and formed from the upper end of the base portion 27 in FIG. Further, at the center of the base portion 27, a terminal block holding convex portion 37 protrudes and is formed on the front side in the direction perpendicular to the paper surface in FIG.

  Further, a positive terminal through hole 39 is formed between the terminal block holding convex portion 37 and the surge killer holding convex portion 28 of the base portion 27. From the positive terminal through hole 39, The plus terminal 21 of the motor 15 is projected and arranged. Further, a negative terminal through hole 41 is formed between the terminal block holding convex portion 37 and the surge killer holding convex portion 29, and the minus terminal of the motor 15 is formed from the negative terminal through hole 41. The terminal 23 protrudes and is arranged.

  Between the surge killer holding convex portion 28 and the surge killer holding convex portion 30 and between the surge killer holding convex portion 30 and the surge killer holding convex portion 29, lead wires 43 and 45 of the surge killer 42 are provided. Is inserted and held. The lead wire 43 is arranged on the left side of the plus terminal 21 of the motor 15 in FIG. 2, and the lead wire 45 is arranged on the right side of the minus terminal 23 of the motor 15 in FIG. 2.

Further, the surge killer holding convex portion 30, the wiring holding convex portion 31, the wiring holding convex portion 33, the terminal block holding convex portion 37, and the portion surrounded by the plus terminal 21 of the motor 15 are provided. Holds the positive terminal block 47.
Further, at the portion surrounded by the surge killer holding convex portion 30, the wiring holding convex portion 33, the wiring holding convex portion 35, the terminal block holding convex portion 37, and the negative terminal 23 of the motor 15. Holds the negative terminal block 49.
The plus side terminal block 47 is arranged on the right side of the plus terminal 21 of the motor 15 in FIG. 2, and the minus side terminal block 49 is arranged on the left side of the minus terminal 23 of the motor 15 in FIG. Yes.

  Further, the plus terminal 21 of the motor 15, the plus side terminal block 47, and the lead wire 43 of the surge killer 42 are integrated by solder (not shown). The minus terminal 23 of the motor 15, the minus terminal block 49, and the lead wire 45 of the surge killer 42 are also integrated by solder (not shown).

  Further, a connecting through hole 51 is formed in the plus side terminal block 47, and a connecting through hole 53 is also formed in the minus side terminal block 49.

  A spindle 61 is rotatably installed in the spindle storage section 11 via bearings 63 and 65. A reduction gear connecting recess 67 is formed on the rear end side of the spindle 61, and the output shaft 19 of the speed reducer 18 is inserted and fixed in the reduction gear connecting recess 67.

A driver mounting recess 68 is opened and formed on the tip side of the spindle 61 (left side in FIG. 1), and a driver 69 is inserted and fixed in the driver mounting recess 68.
The spindle 61 is formed with driver fixing through holes 71 and 73 so as to communicate the inside of the driver mounting recess 68 with the side surface side (upper side or lower side in FIG. 1) of the spindle 61. Yes. Fixing balls 77 and 79 are housed in the driver fixing through holes 71 and 73. The fixing balls 77 and 79 are engaged with an annular groove 75 formed on the outer peripheral surface of the driver 69. Yes. Thereby, the driver 69 inserted into the driver mounting recess 68 is fixed.
The driver fixing through holes 71 and 73 are reduced in diameter on the driver mounting recess 68 side so that the fixing balls 77 and 79 do not fall into the driver mounting recess 68.

An attachment / detachment operation member 81 is installed at the tip of the spindle 61 (left end in FIG. 1). As shown in FIG. 3, the detachable operation member 81 includes a head portion 83 and a shaft portion 85. A through-hole 87 is extended and formed in the shaft portion 85 along the axial direction (left-right direction in FIG. 3). The tip end portion (left end portion in FIG. 3) of the spindle 61 is inserted into the through hole 87. Further, driver fixing convex portions 89 and 91 are formed on the rear end side (right end side in FIG. 3) of the through hole 87, and the fixing ball 77 radiates through the driver fixing convex portion 89. Similarly, the fixing ball 79 is urged radially inward via the driver fixing convex portion 91, and the driver 69 is fixed.
A through hole 92 through which the driver 69 passes is formed in the head 83. The head 83 is fixed to the shaft portion 85 by inserting a plurality of fixing screws 93 into the shaft portion 85 through the head 83.

Further, a seal pressing ring 95 is provided on the rear end side (right side in FIG. 3) of the attaching / detaching operation member 81, and on the rear end side (right side in FIG. 3) of the seal pressing ring 95, labyrinth is provided. 97 is installed. A coil spring 99 is interposed between the rear end (right end in FIG. 3) of the shaft portion 85 of the attaching / detaching operation member 81 and the spindle 61. Further, ball escape recesses 86 and 86 are formed in the shaft portion 85. Normally, the attaching / detaching operation member 81 is urged toward the distal end side (left side in FIG. 3) by the spring force of the coil spring 99, and the balls 77 and 79 are the driver fixing convex portions 89 and 91 as described above. To be urged inward in the radial direction. When the driver 69 is removed, the attaching / detaching operation member 81 is pushed against the spring force of the coil spring 99. Thereby, the urging inward in the radial direction by the driver fixing convex portions 89 and 91 with respect to the balls 77 and 79 is released. When the driver 69 is pulled out in this state, the balls 77 and 79 escape into the ball escape recesses 86 and 86, whereby the driver 69 can be pulled out.
A coil spring 101 is also interposed between the seal pressing ring 95 and the labyrinth 97. The function of this coil spring 101 will be described later.

  Further, the shaft portion 85 of the attaching / detaching operation member 81 is provided with a drop prevention pin 103 protruding in the inner peripheral side of the through hole 87, and the drop prevention pin 103 is attached to the spindle 61. It is movably engaged with an engagement recess 105 opened on the outer peripheral side on the distal end side (left side in FIG. 3). The drop prevention pin 103 engages with the left end of the engagement recess 105 in FIG. 3, thereby preventing the attachment / detachment operation member 81 from dropping from the distal end side (left side in FIG. 3).

  Further, a tip cap 107 is screwed and fixed to the tip cap attaching portion 13. A through hole 109 is extended and formed in the tip cap 107 in the axial direction (left and right direction in FIG. 3), and the already described attaching / detaching operation member 81 and the seal pressing ring 95 penetrate the through hole 109. Yes.

  A flange 111 is formed at the center of the seal retainer ring 95 in the axial direction (left-right direction in FIG. 3). The flange 111 and the rear end surface (the surface on the right end in FIG. 3) of the tip cap 107 are formed on the flange 111. An annular seal member 115 is interposed between the formed seal housing recess 113. An annular seal member 116 is also inserted between the rear end side (right end side in FIG. 3) of the seal pressing ring 95 and the spindle 61. An annular seal member 117 is also inserted between the tip cap 107 and the tip of the main body case 5 (left end in FIG. 3).

  Further, a spacer 119 is installed on the rear end side (right side in FIG. 3) of the labyrinth 97, and an annular seal member 121 is interposed between the spacer 119 and the labyrinth 97. The sealing member 115, 121 is pressed by the coil spring 101 already described to improve the sealing performance.

  As shown in FIG. 1, an adapter 123 is installed on the rear end side (right side in FIG. 1) of the main body case 5, and a battery pack is installed on the rear end side (right side in FIG. 1) of the adapter 123. 125 is detachably installed. As shown in FIG. 4, the adapter 123 has a shape bent downward in FIG. 4, and a terminal storage recess 127 is opened and formed on the front end side (left side in FIG. 4). Further, a through hole 128 is formed to connect the inside of the terminal storing recess 127 and the battery pack 125 side.

  In the terminal storage recess 127, the motor plus terminal 21, the motor minus terminal 23, the wiring holding member 25, and the wiring holding member 25 on the rear end side (right side in FIG. 4) of the motor 15 described above are provided. The held surge killer 42 and the like are accommodated and arranged.

  In addition, a power supply plus terminal 129 is inserted through the through hole 128 of the adapter 123. The power source plus terminal 129 has a rear end side (right side in FIG. 4) with an enlarged diameter to form a head portion 131, and a front end side (left side in FIG. 4) has a shaft portion 133. A male screw part 135 is formed on the shaft part 133, and the power source plus terminal 129 is fixed to the adapter 123 by screwing a nut 137 into the male screw part 135. An annular seal member 139 is interposed between the adapter 123 and the head 131 of the power supply plus terminal 129. Further, the shaft portion 133 of the power supply plus terminal 129 is formed with a connection hole 141 opened in the terminal storage recess 127 of the adapter 123.

  Further, a battery pack connecting portion 142 which is a substantially annular convex portion is formed on the rear end side (right side in FIG. 4) of the adapter 123. Further, a power supply connection terminal 143 is installed on the lower side of the battery pack connection portion 142 in FIG. The power connection terminal 143 has a connection hole 145 opened in the terminal storage recess 127 of the adapter 123. Further, an annular groove 147 for a seal member is formed on the battery pack 125 side (the lower right side in FIG. 4) of the power connection terminal 143, and an annular seal member 149 is formed in the annular groove 147 for the seal member. Is installed.

  An annular seal member 151 is interposed between the distal end side (left side in FIG. 4) of the adapter 123 and the rear end side (right side in FIG. 4) of the main body case 5. The adapter 123 is fixed by screwing screws (not shown) through the adapter 123 and screwing them into female screw portions 153 and 153 (shown in FIG. 2) of the main body case 5.

  The battery pack 125 has a battery case 155. The battery case 155 includes batteries 157 and 159, a poly switch 161, and a power source negative terminal 163. The batteries 157 and 159 and the polyswitch 161 are integrated by a film-shaped packaging member 164. The positive electrode 165 of the battery 157 is exposed to the outside of the packaging member 164, and comes into contact with the power supply positive terminal 129 when the battery pack 125 is attached to the adapter 123. Further, the negative electrode 167 of the battery 159 is also exposed to the outside of the packaging member 164 and is in contact with one end side of the spring electrode 169 installed on the inner peripheral surface of the battery case 155.

  As shown in FIGS. 1 and 4, the spring electrode 169 is a battery side contact portion 171 having one end side formed in a large-diameter spring shape, and the other end side is a power source minus formed in a small-diameter spring shape. A terminal side contact portion 173 is formed. As described above, the battery side contact portion 171 is in contact with the negative pole 167 of the battery 159, and the power source negative terminal 163 is inserted into the power source negative terminal side contact portion 173.

  As shown in FIG. 4, the power source minus terminal 163 is composed of a head 175 having an enlarged diameter and a shaft portion 177, and the shaft portion 177 has a power source minus of the spring electrode 169 as described above. The terminal side contact portion 173 is inserted. The head 175 of the power source minus terminal 163 is in contact with the power source connection terminal 143 when the battery pack 125 is attached to the adapter 123.

  Further, as shown in FIG. 1, the battery-side contact portion 171 of the spring electrode 169 protrudes and is formed on the inner bottom surface (the lower right surface in FIG. 1) of the battery case 155. 178 is engaged. Further, the power source negative terminal side contact portion 173 of the spring electrode 169 is an electrode holding electrode formed on the inner side surface (the lower left side surface in FIG. 4) of the battery case 155 as shown in FIGS. The recess 179 is engaged.

  On the adapter 123 side (the left side in FIG. 4) of the inner peripheral surface of the battery case 155, a fixing engagement convex portion (not shown) is formed. Further, on the outer peripheral surface of the battery pack connecting portion 142 of the adapter 123, a fixing engagement groove (not shown) extended in the circumferential direction of the battery pack connecting portion 142 (vertical direction in FIG. 4 or perpendicular to the paper surface). In addition, a guide groove (not shown) that is communicated with the fixing engagement groove (not shown) and that is opened on the rear end side (right side in FIG. 4) of the adapter 123 is formed.

When fixing the battery pack 125 to the adapter 123, first, the fixing engagement projection (not shown) is engaged with a guide groove (not shown) of the adapter 123, and the battery pack 125 is shown. The adapter 123 is moved until a fixing engagement convex portion (not shown) abuts a surface (left side in FIG. 4) of the fixing engagement groove (not shown) of the adapter 123 along the guide groove. To the side (left side in FIG. 4). Thereafter, the battery pack 125 is rotated, and a fixing engaging projection (not shown) of the battery pack 125 is engaged with a fixing engaging groove (not shown) of the adapter 123, so that the battery pack 125 is shown in FIG. Do not fall off to the middle right.
When removing the battery pack 125 from the adapter 123, first, the battery pack 125 is rotated, and a fixing engagement projection (not shown) of the battery pack 125 and a guide groove (not shown) of the adapter 123 are surrounded. The battery pack 125 is pulled out to the right side in FIG.

  For example, as shown in FIG. 3, a switch module storage recess 180 is formed in the upper part of the front end side of the main body case 5, and the switch module 181 is installed in the switch module storage recess 180. Has been. Hereinafter, the configuration of the switch module 181 will be described.

  The switch module 181 includes a switch cover 183. The switch cover 183 has a switch housing recess 185, for example, as shown in FIG. Further, a wiring storage portion 186 is formed on the rear end side (right side in FIG. 3) of the switch storage recess 185. As shown in FIGS. 5 and 6, button openings 187 and 187 ′ are formed on the upper surface side (the upper side in FIG. 6) of the switch cover 183. Further, a wiring through-hole 191 is formed on the rear end surface (the lower right surface in FIG. 6) of the switch cover 183. The outside of the wiring through-hole 191 (the lower right side in FIG. 6) is widened, and a seal member storage portion 193 is formed. A seal member 192 is interposed between the seal member storage portion 193 and the main body case 5.

  For example, as shown in FIG. 6, the switch cover 183 has a plurality (five in this embodiment) of fixing screw through holes 195 extending in the height direction (vertical direction in FIG. 6). Is formed. The switch module 181 is fixed to the case body 105 by screwing the fixing screws 194 through the fixing screw through holes 195 and screwing them into the case body 105. A packing 196 is interposed between the fixing screw 194 and the switch cover 183. As shown in FIG. 3, a seal member groove 198 is formed in the switch module housing recess 180. The seal member groove 198 and the bottom surface of the switch cover 183 (the lower surface in FIG. 3). ) Is interposed between the sealing member 200.

  A module main body 197 is housed in the switch housing recess 185 of the switch cover 183. The module main body 197 includes, for example, an upper plate 201 and a lower plate 203 installed on the lower side of the upper plate 201 as shown in FIGS.

On the upper side of the upper plate 201 in FIG. 7, annular button holding recesses 205 and 205 ′ are formed. In addition, operation through holes 207 and 207 'are formed coaxially inside the button holding recesses 205 and 205', respectively.
Further, as shown in FIG. 8A, a seesaw member accommodating recess 211 extending in the left-right direction in FIG. 8A is formed on the back side of the upper plate 201. A seesaw member bearing portion 213 extending in the vertical direction in FIG. 8A is formed at the center of the seesaw member housing recess 211.

  Further, normally closed contact holding concave portions 215, 215, 215 ′, and 215 ′ are extended and formed in the vertical direction in FIG. 8A at the left and right ends in FIG. 8A of the concave portion 211 for storing the seesaw member. Has been. Further, on the back side of the upper plate 201 and below the seesaw member accommodating recess 211 in FIG. 8A, a normally closed contact wiring recess 219 extends in the left-right direction in FIG. 8A.・ It is formed. Further, a normally closed contact wiring recess 221 is also extended and formed in the middle direction in FIG. 8A on the right side of the normally closed contact wiring recess 219 in FIG. 8A.

Further, as shown in FIG. 8B, the lower plate 203 is formed with contact accommodating recesses 223 and 223 ′. Further, a normally open contact wiring recess 225 is formed on the bottom side of the lower plate 203 so as to communicate with the contact storing recesses 223 and 223 ′. Also, a normally open contact wiring recess 227 is formed on the right side of the normally open contact wiring recess 225 in FIG. 8B.
A movable contact wiring recess 229 is formed on the upper side of the normally open contact wiring recess 225 in FIG. 8B so as to communicate with the contact housing recesses 223 and 223 ′. A movable contact wiring recess 231 is formed on the right side of the movable contact wiring recess 229 in FIG. 8B.

  Further, as shown in FIG. 7, a seesaw member accommodating recess 233 is formed at the center of the lower plate 203, and a seesaw member bearing 235 is formed at the center of the seesaw member accommodating recess 233. Has been. Further, on the upper surface (upper surface in FIG. 7) side of the lower plate 203 and on both sides in the width direction (the direction from the lower left to the upper right in the FIG. Recesses 237 and 237 are formed. Further, on the upper surface (upper surface in FIG. 7) side of the lower plate 203 and on both sides in the width direction (the direction from the lower left to the upper right in FIG. 7) of the contact storing recess 223 ′, the normally closed contact is held. Recesses 237 'and 237' are formed.

  Further, a normally closed contact wiring recess 239 is formed on the upper surface (upper surface in FIG. 7) side of the lower plate 203 so as to communicate with the contact storing recesses 223 and 223 ′. Further, a normally closed contact wiring recess 241 is formed on the right side of the normally closed contact wiring recess 239 in FIG.

  Normally closed contacts 243 are installed in the normally closed contact holding recesses 215 and 215 of the upper plate 201 and the normally closed contact holding recesses 237 and 237 of the lower plate 203. This normally closed contact 243 is a rod-shaped member made of a conductive material, and as shown in FIG. 7, the center in the length direction (the direction from the lower left to the upper right in FIG. 7) is cut away, A recess 245 is formed. Further, connection through holes 247 and 247 are formed at both ends of the normally closed contact 243 in the length direction (the direction from the lower left to the upper right in FIG. 7).

Normally closed contacts 243 ′ are installed in the normally closed contact holding recesses 215 ′ and 215 ′ of the upper plate 201 and the normally closed contact holding recesses 237 ′ and 237 ′ of the lower plate 203. The normally closed contact 243 ′ is a member having the same configuration as the normally closed contact 243.
It should be noted that the components of the normally closed contact 243 'will be described with reference numerals with "'" added to the components of the normally closed contact 243.

  A seesaw member 249 is installed in the seesaw member storing recess 211 of the upper plate 201 and the seesaw member storing recess 233 of the lower plate 203. The normally closed contact 243 side (upper left side in FIG. 7) of the seesaw member 249 is a pressing operation part 251, and the normally closed contact 243 ′ side (lower right side in FIG. 7) of the seesaw member 249 is a pressing operation part. 251 ′. Further, the center of the seesaw member 249 is a shaft portion 253, and the seesaw member 249 is connected to the seesaw member bearing portion 213 of the upper plate 201 and the seesaw member of the lower plate 203 via the shaft portion 253. The bearing portion 235 is rotatably supported.

Further, as shown in FIG. 9A, a movable contact holding member 255 is installed in the contact storing recess 223 of the lower plate 203. The movable contact holding member 255 is a conductive member, and a through hole 257 is formed at the center thereof. Further, as shown in FIG. 7, a connection hole 258 is formed on the side surface of the movable contact holding member 255.
Further, a movable contact holding member 255 ′ is installed in the contact storing recess 223 ′ of the lower plate 203. The movable contact holding member 255 ′ is a member having the same configuration as the movable contact holding member 255.
It should be noted that the components of the movable contact holding member 255 ′ will be described with reference numerals with “′” added to the reference numerals of the components of the movable contact holding member 255.

  A movable contact 259 is installed in the contact housing recess 223 and above the movable contact holding member 255. In the case of the present embodiment, the movable contact 259 is a dome spring. In addition, a movable contact 259 ′ is installed in the contact housing recess 223 ′ and above the movable contact holding member 255 ′. The movable contact 259 ′ is also a dome spring like the movable contact 259.

  A normally open contact holding member 261 made of a non-conductive member is installed in the contact housing recess 223 and below the movable contact holding member 255. At the center of the normally open contact holding member 261, as shown in FIG. 7, a normally open contact supporting convex portion 263 is projected and formed toward the upper side in FIG. Further, a normally-open contact through-hole 265 extends and is formed in the vertical direction in FIG. 7 at the center of the normally-open contact supporting convex portion 263. Further, a normally open contact wiring recess 267 is extended and formed in the front-rear direction (the direction from the upper left to the lower right in FIG. 7) on the bottom surface side (lower side in FIG. 7) of the normally open contact holding member 261. Yes. A movable contact wiring recess 269 is formed on the bottom surface side (lower side in FIG. 7) of the normally open contact holding member 261 in parallel with the normally open contact wiring recess 267.

A normally open contact holding member 261 ′ made of a non-conductive member is installed in the contact housing recess 223 ′ and below the movable contact holding member 255 ′. The normally open contact holding member 261 ′ is a member having the same configuration as the normally open contact holding member 261.
The constituent elements of the normally-open contact holding member 261 ′ will be described with reference numerals with “′” added to the reference numerals of the constituent elements of the normally-open contact holding member 261.

A normally open contact 271 is provided below the movable contact 259. The normally open contact 271 is a conductive member, and includes a head portion 273 and a neck portion 275 that protrudes and is formed below the head portion 273. The neck portion 275 includes a connection through hole. 277 is formed. The normally-open contact 271 is inserted into the normally-open contact through hole 265 of the normally-open contact holding member 261, and the head 273 of the normally-open contact 271 protrudes below the movable contact 259. Yes.
Further, a normally open contact 271 'is provided below the movable contact 259'. The normally open contact 271 ′ is also attached to the normally open contact holding member 261 ′ in the same manner as the normally open contact 271.

  Further, as shown in FIGS. 8A and 10A, one connection through hole 247 of the normally closed contact 243 and one connection through hole 247 ′ of the normally closed contact 243 ′ are provided. The normally closed contact wiring member 279 is inserted and connected. The normally closed contact wiring member 279 is housed and disposed in the normally closed contact wiring recesses 219 and 221 of the upper plate 201 and the normally closed contact wiring recesses 239 and 241 of the lower plate 203.

As shown in FIG. 7, a normally closed contact side lead wire 283 is connected to the normally closed contact wiring member 279 via a sleeve 281 made of a conductive material. The normally closed contact side lead wire 283 is composed of a conductive core wire 285 and a non-conductive covering 287 provided on the outer peripheral side of the core wire 285. 7 is inserted into the sleeve 281 and the left end side of the core wire 285 of the normally closed contact side lead wire 283 in FIG. 7 is also inserted into the sleeve 281.
The normally closed contact side lead wire 283 is drawn out of the switch module 181 from the wiring through-hole 191 via the wiring housing portion 186 of the switch cover 183.

  Further, as shown in FIG. 10B, a movable contact wiring member 289 is inserted into the connection hole 258 of the movable contact holding member 255. The movable contact wiring member 289 is a conductive cylindrical member. A core wire 293 of the movable contact side lead wire 291 is inserted into the movable contact wiring member 289. Similar to the normally closed contact side lead wire 283, the movable contact side lead wire 291 is composed of the conductive core wire 293 and a non-conductive coating 295 provided on the outer peripheral side of the core wire 293. Yes.

  As shown in FIG. 10B, the movable contact side lead wire 291 is pulled out to the right side in FIG. 10B of the movable contact holding member 255 and then moved into the movable contact wiring recess 229 of the lower plate 203. 10 (b), and is accommodated and disposed in the movable contact wiring recess 269 'of the normally open contact holding member 261'. Through the movable contact wiring recess 231 of the lower plate 203, The module body 197 is pulled out. Then, the movable contact side lead wire 291 is drawn out of the switch module 181 from the wiring through hole 191 via the wiring storage portion 186 of the switch cover 183.

  As shown in FIG. 10B, a movable contact wiring member 289 'is inserted into the connection hole 258' of the movable contact holding member 255 '. This movable contact wiring member 289 'is a conductive cylindrical member. A core wire 293 ′ of the movable contact side lead wire 291 ′ is inserted into the movable contact wiring member 289 ′. Similar to the normally closed contact side lead wire 283, the movable contact side lead wire 291 ′ includes the conductive core wire 293 ′ and the non-conductive coating 295 ′ provided on the outer peripheral side of the core wire 293 ′. It is composed of

  As shown in FIG. 10 (b), the movable contact side lead wire 291 ′ is connected to the movable contact holding member 255 ′ from the right side in FIG. 10 (b) through the movable contact wiring recess 231 of the lower plate 203. Then, it is pulled out of the module main body 197 and is further pulled out of the switch module 181 from the wiring through-hole 191 through the wiring storage portion 186 of the switch cover 183.

  Further, for example, as shown in FIG. 9A, the connection through hole 277 of the normally open contact 271 and the connection through hole 277 ′ of the normally open contact 271 ′ are penetrated by the normally open contact wiring member 297. Yes. The normally open contact wiring member 297 includes a normally open contact wiring recess 267 of the normally open contact holding member 261, a normally open contact wiring recess 225 of the lower plate 203, and a normally open contact of the normally open contact holding member 261 '. The wiring recess 267 ′ is housed and disposed in the normally open contact wiring recess 227 of the lower plate 203.

As shown in FIG. 9A, a normally open contact side lead wire 301 is connected to the normally open contact wiring member 297 through a sleeve 299 made of a conductive material. Like the normally closed contact side lead wire 283, the normally open contact side lead wire 301 is composed of a conductive core wire 303 and a non-conductive coating 305 provided on the outer peripheral side of the core wire 303. Yes. 9A is inserted into the sleeve 299, and the left end side in FIG. 7 of the core wire 303 of the normally open lead wire 301 is also inserted into the sleeve 299. Yes.
The normally open contact-side lead wire 301 is drawn out of the switch module 181 from the wiring through-hole 191 through the wiring storage portion 186 of the switch cover 183.

  As shown in FIGS. 1 to 4, the case body 105 already described has a wiring penetration opening in the switch module housing recess 180 and on the rear end side (right side in FIG. 1) of the case body 105. A hole 307 is formed. As shown in FIG. 2, the normally closed contact side lead wire 283, the movable contact side lead wire 291, the movable contact side lead wire 291 ′, and the normally open contact side lead wire are disposed in the wiring through hole 307. 301 is penetrated and arrange | positioned.

As shown in FIG. 2, the movable contact side lead wire 291 is drawn out to the rear end side of the main body case 5 (the front side in the direction perpendicular to the paper surface in FIG. 2) through the wiring through hole 307. The rear end side of the core wire 293 of the movable contact side lead wire 291 is inserted into the connection through hole 51 of the positive side terminal block 47 already described. Thereby, the movable contact 259 and the motor plus terminal 21 of the motor 15 are connected.
Further, the movable contact side lead wire 291 ′ is also drawn out to the rear end side (the front side in the vertical direction in FIG. 2) of the main body case 5 through the wiring through hole 307. The rear end side of the core wire 293 ′ of the lead wire 291 ′ is inserted into the connection through hole 53 of the negative terminal block 49 already described. As a result, the movable contact 259 ′ is connected to the motor minus terminal 23 of the motor 15.

  As shown in FIG. 4, the rear end side of the core wire 303 of the normally open contact side lead wire 301 is inserted into a sleeve 309 made of a conductive material, and the rear end side of the core wire 303 is connected to the sleeve 309. Via, a normally open contact side connector pin 311 installed on the rear end side (right side in FIG. 4) of the case main body 105 is connected. A connection hole 313 is formed on the base end side (left side in FIG. 4) of the normally open contact side connector pin 311, and the sleeve 309 and the rear end side of the core wire 303 are inserted into the connection hole 313. Yes. The normally open contact side connector pin 311 is installed in the connector pin mounting hole 315 shown in FIG. 2, and the normally open contact side lead wire 301 is connected to the normally open contact via the wiring groove 317. Pulled out to the side connector pin 311 side.

  Similarly, the rear end side of the core wire 285 of the normally closed contact side lead wire 283 is also inserted into a sleeve (not shown) made of a conductive material, and the rear end side of the core wire 285 is connected to the sleeve (not shown). To a normally closed contact side connector pin (not shown). The normally-closed contact-side connector pin (not shown) has the same configuration as the normally-open contact-side connector pin 311. The sleeve (not shown) and the core wire are connected to the connection hole on the base end side of the normally-closed contact-side connector pin (not shown). The rear end side of 285 is inserted. Further, the normally closed contact side connector pin (not shown) is installed in the connector pin mounting hole 319 shown in FIG. 2, and the normally closed contact side lead wire 283 is not shown via the wiring groove 321. It is pulled out to the normally closed contact side connector pin side.

  As shown in FIG. 4, the adapter 123 is provided with a normally open contact side connector 323. The normally open contact side connector pin 311 is inserted and connected to the normally open contact side connector 323. The normally open contact side connector 323 is connected to a normally open contact side lead wire 325 for wiring in the adapter. The normally open contact side lead wire 325 for wiring in the adapter is also composed of a core wire 327 and a coating 329, and the end of the core wire 327 on the side of the reversely open contact side connector 323 is inserted into a conductive sleeve 331. The sleeve 331 is inserted into the connection hole 141 of the power plus terminal 129 already described. As a result, the normally open contacts 271, 271 ′ and the power supply plus terminal 129 already described are connected.

  The adapter 123 is provided with a normally closed contact side connector (not shown). The normally closed contact side connector pin (not shown) is inserted and connected to a normally closed contact side connector (not shown). Further, a normally closed contact side lead wire 333 for wiring inside the adapter is connected to the normally closed contact side connector (not shown). The normally closed contact side lead wire 333 for wiring in the adapter is also composed of a core wire 335 and a sheath 337, and the end of the core wire 335 on the side of the reversely closed contact side connector is inserted into a conductive sleeve 339. The sleeve 339 is inserted into the connection hole 145 of the power connection terminal 143 already described. Thereby, the normally closed contacts 243 and 243 ′ are connected to the power source minus terminal 163 of the power source 67.

For example, as shown in FIG. 6, push button members 341 and 341 ′ made of a soft material such as silicone rubber are installed on the upper side of the upper plate 201. For example, as shown in FIG. 9A, the edge of the push button member 341 is interposed between the switch cover 183 and the button holding recess 205 of the upper plate 201. Further, the front side (the upper side in FIG. 9) of the push button member 341 is exposed to the outside from the button opening 187 of the switch cover 183.
Further, the edge of the push button member 341 ′ is also interposed between the switch cover 183 and the button holding recess 205 ′ of the upper plate 201 as shown in FIG. 9A, for example. Further, the front side (upper side in FIG. 9) of the push button member 407 ′ is exposed to the outside from the button opening 187 ′ of the switch cover 183.

  Further, for example, as shown in FIG. 9A, a pressing operation member 343 is provided on the bottom surface side (lower side in FIG. 9A) of the push button member 341. A spherical sliding surface 345 is formed below the pressing operation member 343, and a spherical member 347 as an intermediate operation member is installed so as to contact the sliding surface 345. The spherical member 347 is made of, for example, ceramic, and is in contact with the distal end side (the left end side in FIG. 9A) of the pressing operation portion 251 of the seesaw member 249 already described. The spherical member 347 is accommodated in the operation through hole 207 of the upper plate 201.

  For example, as shown in FIG. 9A, a pressing operation member 343 ′ is installed on the bottom surface side (lower side in FIG. 9A) of the push button member 341 ′. The pressing operation member 343 'has the same configuration as the pressing operation member 343, and a spherical sliding surface 345' is formed. A spherical member 347 as an intermediate operation member is in contact with the sliding surface 345 '. 'Is installed. The spherical member 347 ′ has the same configuration as the spherical member 347, and is made of, for example, ceramic. The tip side of the pressing operation portion 251 ′ of the seesaw member 249 (the right end side in FIG. 9A) contacts. Has been. The spherical member 347 ′ is accommodated in the operation through hole 207 ′ of the upper plate 201.

  With such a configuration, when the push button member 341 is pressed, the front end side (the left end side in FIG. 9A) of the seesaw member 249 is lowered by the press operation member 343 and the spherical member 347. As shown in FIG. 9 (b), the movable contact 259 is pressed to the lower side in FIG. 9 (a) by the front end side (left end side in FIG. 9 (a)) of the pressing operation portion 251. Deform.

  At this time, the distal end side of the pressing operation portion 251 ′ of the seesaw member 249 is biased upward in FIG. 9B by rotating the seesaw member 249 counterclockwise in FIG. . As a result, the spherical member 347 ′, the pressing operation member 343 ′, and the push button member 341 ′ are urged upward in FIG. 9B.

  Further, when the push button member 341 'is pressed, the distal end side (the left end side in FIG. 9A) of the press operation portion 251' of the seesaw member 249 is lowered by the press operation member 343 'and the spherical member 347'. 9, the seesaw member 249 is rotated clockwise in FIG. 9, and as shown in FIG. 9C, the front end side of the pressing operation portion 251 ′ (the left end in FIG. 9A). The movable contact 259 'is pressed and deformed downward in FIG.

  At this time, the distal end side of the pressing operation portion 251 of the seesaw member 249 is urged upward in FIG. 9C by the clockwise rotation of the seesaw member 249 in FIG. Accordingly, the spherical member 347, the pressing operation member 343, and the push button member 341 are urged upward in FIG. 9C.

  Even if the push button members 341 and 341 ′ are simultaneously pressed, the seesaw member 249 does not simultaneously press and deform both the movable contacts 259 and 259 ′.

  The first switch 182 constituting the switch module 181 includes a push button member 341, a pressing operation member 343, a pressing operation portion 251 of the seesaw member 249, a spherical member 347, a movable contact 259, a normally closed contact 243, and a normally open contact 271. Has been. Further, the second switch 182 ′ constituting the switch module 181 includes a push button member 341 ′, a pressing operation member 343 ′, a pressing operation portion 251 ′ of the seesaw member 249, a spherical member 347 ′, a movable contact 259 ′, and a normally closed contact. 243 'and normally open contact 271'.

Further, the electric circuit of the electric driver 1 has a configuration as shown in FIG.
First, there is a power source 156, and the power source 156 is configured such that the batteries 157 and 159 are connected in series via a polyswitch 161. A power supply positive terminal 129 is installed on the positive electrode 165 side of the battery 157, and a power supply negative terminal 163 is installed on the negative electrode 167 side of the battery 159.
A motor 15 is installed, a first switch 182 is installed on the motor plus terminal 21 side of the motor 15, and a second switch 182 ′ is installed on the motor minus terminal 23 side of the motor 15. ing.

The movable contact 259 of the first switch 182 and the motor plus terminal 21 of the motor 15 are connected. The normally closed contact 11 of the first switch 182 and the power source negative terminal 163 are connected. A normally open contact 271 of one switch 182 and the power source plus terminal 129 are connected.
Further, the movable contact 259 ′ of the second switch 182 ′ and the motor minus terminal 23 of the motor 15 are connected, and the normally closed contact 11 ′ of the second switch 182 ′ and the power source minus terminal 163 are connected. The normally open contact 271 of the first switch 182 and the power supply plus terminal 129 are connected.

  In a state where neither the first switch 182 nor the second switch 182 ′ is pressed, the motor plus terminal 21 of the motor 15 is electrically connected to the power source minus terminal 163 and the motor minus terminal of the motor 15. 23 is also electrically connected to the power source minus terminal 163, and the motor 15 is not operated.

  When only the first switch 182 is pressed, the movable contact 259 and the normally open contact 271 of the first switch 182 are brought into conduction, and the motor plus terminal 21 of the motor 15 is brought into conduction with the power supply plus terminal 129. . At this time, since the motor minus terminal 23 of the motor 15 remains connected to the power source minus terminal 163, the potential of the motor plus terminal 21 of the motor 15 becomes positive, and the motor minus terminal 23 of the motor 15 becomes positive. Since the potential is on the minus side, the motor 15 is rotated forward.

  When only the second switch 182 'is pressed, the movable contact 259' and the normally open contact 271 'of the second switch 182' are brought into conduction, and the motor minus terminal 23 of the motor 15 is connected to the power supply plus terminal. 129 conducts. At this time, since the motor plus terminal 21 of the motor 15 remains in conduction with the power source minus terminal 163, the potential of the motor plus terminal 21 of the motor 15 becomes negative, and the motor minus terminal 23 of the motor 15 becomes negative. Since the potential is on the plus side, the motor 15 is reversed.

  Since the seesaw member 249 is installed, both the first switch 182 and the second switch 182 ′ are not pressed simultaneously. However, even if both are pressed simultaneously, the motor plus of the motor 15 is not affected. Since the terminal 21 is electrically connected to the power supply positive terminal 129 and the motor negative terminal 23 of the motor 15 is also electrically connected to the power supply positive terminal 129, the motor 15 is not operated.

  Further, as described above, the surge killer 42 is installed between the plus terminal 21 and the minus terminal 23 of the motor 15. The surge killer 42 prevents the contact of the first switch 182 and the like from being damaged due to the counter electromotive force of the motor 15 and the emission of electromagnetic noise to the surroundings.

Next, the operation of this embodiment will be described.
First, when the electric driver 1 is rotated forward, the pressing operation member 343 is pressed through the push button member 341. As a result, as shown in FIG. 9B, the movable contact 259 is pressed and deformed downward via the pressing operation portion 251 of the spherical member 347 and the seesaw member 249, and is contacted and conducted to the normally open contact 271. . Then, as shown in the circuit diagram of FIG. 11, the motor plus terminal 21 of the motor 15 is electrically connected to the power source positive terminal 129, and the motor minus terminal 23 of the motor 15 remains electrically connected to the power source minus terminal 163. Since the potential of the motor plus terminal 21 of the motor 15 is on the plus side and the potential of the motor minus terminal 23 of the motor 15 is on the minus side, the motor 15 is rotated forward. Thereby, the driver 69 attached to the spindle 61 is rotated forward.

  When the electric driver 1 is reversely rotated, the pressing operation member 343 ′ is pressed through the push button member 341 ′. As a result, as shown in FIG. 9C, the movable contact 259 ′ is pressed and deformed downward through the spherical member 347 ′ and the pressing operation portion 251 ′ of the seesaw member 249, and comes into contact with the normally open contact 271 ′. -Conducted. As shown in the circuit diagram of FIG. 11, the motor minus terminal 23 of the motor 15 is electrically connected to the power source positive terminal 129, and the motor plus terminal 21 of the motor 15 is still electrically connected to the power source negative terminal 163. Since the potential of the motor plus terminal 21 of the motor 15 is on the minus side and the potential of the motor minus terminal 23 of the motor 15 is on the plus side, the motor 15 is reversed. Thereby, the driver 69 attached to the spindle 61 is reversed.

Since the seesaw member 249 is installed, the contact / conduction between the movable contact 259 and the normally open contact 271 and the contact / conduction between the movable contact 259 ′ and the normally open contact 271 ′ are simultaneously achieved. In the unlikely event that the seesaw member 249 is deformed, contact / conduction between the movable contact 259 and the normally open contact 271 and contact between the movable contact 259 'and the normally open contact 271' Even if conduction occurs simultaneously, the motor 15 is not operated as shown in the circuit diagram of FIG.
Further, even when the push button members 341 and 341 'are not pressed, the motor 15 is not operated as shown in the circuit diagram of FIG.

Next, effects of this embodiment will be described.
First, since the movable contacts 259 and 259 ′ are made of dome springs and have an elastic return force, and normally closed contacts 243 and 243 ′ are provided, as in the prior art, with a simple configuration without using a relay, The switch module 181 that rotates the motor 15 forward and backward can be provided, and the electric driver 1 using such a switch module 181 can be provided.
In addition, since it is not necessary to use a relay as in the prior art, the switch module 181 and thus the electric driver 1 can be reduced in size accordingly.
Further, unlike the prior art, since no relay is used, the number of parts is small, parts management becomes easy, and cost can be reduced.

Further, since the seesaw member 249 is used, simultaneous pressing operation of the first switch 182 and the second switch 182 ′ can be prevented.
Further, since the seesaw member 249 is used, for example, when the pressing operation unit 251 side is pressed, a spherical member 347 ′ on the pressing operation unit 251 ′ side, a pressing operation member, as shown in FIG. 9B. 343 ′ and the push button member 341 ′ are pushed upward in FIG. 9B and reliably return to the original state. Similarly, when the pressing operation portion 251 ′ side is pressed, as shown in FIG. 9C, the spherical member 347, the pressing operation member 343, and the push button member 341 on the pressing operation portion 251 side are changed to those shown in FIG. b) It is pushed up to the middle upper side to reliably return to the original state. Thereby, for example, the spherical members 347 and 347 ′ are caught in the operation through holes 207 and 207 ′ of the upper plate 201, and the movable contacts 259 and 259 ′ remain deformed. The occurrence of such a situation that ′ remains closed can be reliably prevented. Thereby, the operation of the switch module 181 and thus the electric driver 1 can be ensured.

Moreover, since it is comprised so that operation may be performed via the pushbutton members 341 and 341 'and the press operation members 343 and 343', operativity can be improved.
Further, since the spherical members 347 and 347 ′ are installed between the seesaw member 249 and the pressing operation members 343 and 343 ′, the pressing operation members 343 and 343 ′ are interposed via the push button members 341 and 341 ′. When the 343 'is pressed, the spherical members 347, 347' roll slightly, thereby reducing the resistance when the push button members 341, 341 'are pressed and increasing the operational feeling.
In addition, since the push button members 341 and 341 'are made of silicon rubber, it is possible to enhance the operational feeling.

  Further, the normally closed contacts 243 and 243 ′ and the normally closed contact wiring member 279 are simply inserted into the connection through holes 247 and 247 ′ of the normally closed contacts 243 and 243 ′. The normally open contacts 271, 271 ′ and the normally open contact wiring member 297 are simply inserted into the connection through holes 277, 277 ′ of the normally open contacts 271, 271 ′. The movable contacts 259 and 259 ′ and the movable contact wiring members 289 and 289 ′ are inserted into the connection holes 258 of the movable contact holding member 255, and the movable contact holding member 255 is connected. Since the movable contact wiring member 289 'is inserted into the connecting hole 258', the switch module 181 can be easily assembled.

Further, the wiring for the motor plus terminal 21 and the motor minus terminal 23 of the motor 15 is soldered by engaging the lead wires 43 and 45 of the surge killer 42, the plus side terminal block 47 and the minus side terminal block 49 with the wiring holding member 25. Then, the rear end side of the core wire 293 of the movable contact side lead wire 291 is inserted into the connection through hole 51 of the plus side terminal block 47, and the movable contact point is inserted into the connection through hole 53 of the minus side terminal block 49. Since it can be performed by inserting the rear end side of the core wire 293 'of the side lead wire 291', wiring work is easy.
In addition, although the electric driver 1 of the present embodiment is for medical use, the main body case 5, the adapter 123, and the battery pack 125 constitute a “U” shape as a whole. For example, if the right hand is grasped from below, the index finger and the middle finger are naturally placed on the first switch 182 and the second switch 182 ′, and if operated in this state, good operability is provided. Can do.
Moreover, since there is no part which protrudes largely around the front-end | tip part, it is convenient as a medical electric driver used in a narrow space.

The present invention is not limited to the one embodiment.
First, in the case of the above-described embodiment, the medical electric driver has been described as an example. However, the present invention is not limited to this and can be widely applied to general electric drivers.
In addition, the applicable devices of the switch and the switch module are not limited to the electric driver, and can be applied to a wide variety of general devices. In particular, two paths through which current flows in various devices are prepared. It can be considered to be used for switching.
Moreover, in the case of the said one Embodiment, although the switch module was comprised from two switches, the case where it is three or more can also be considered.
In the case of the embodiment, the movable contact is made of a dome spring. However, the movable contact is not limited thereto. For example, the movable contact is made of another elastic member such as a coil spring or a leaf spring. Also good.
Moreover, in the case of the said one Embodiment, although the spherical member was used as an intermediate | middle operation member, you may use a roller etc., for example.
In addition, the shape, size, material, and the like of each component are examples, and are not described in the above embodiment.

  The present invention relates to, for example, a switch, a switch module, and an electric driver used for forward / reverse operation of a motor, and more particularly to a device devised so that the configuration can be simplified and miniaturized, for example, for medical use. It is suitable for the electric driver.

DESCRIPTION OF SYMBOLS 1 Electric driver 181 Switch module 182 Switch 182 'Switch 243 Normally closed contact 243' Normally closed contact 249 Seesaw member 259 Movable contact 259 'Movable contact 271 Normally open contact 271' Normally open contact 343 Press operation member 343 'Press operation member 347 Spherical Member (intermediate operation member)
347 'Spherical member (intermediate operation member)

Claims (12)

A normally closed contact;
A normally open contact;
A movable contact that is made of an elastic member and is normally brought into contact with the normally closed contact by its own elastic force and separated from the normally closed contact by being pressed against the elastic force to be in contact with the normally open contact; ,
Equipped with,
A push button member made of a soft material used when operating the movable contact is installed,
The normally closed contact, the normally open contact, the movable contact, and a switch cover provided with an opening that accommodates the push button member and exposes a part of the push button member to the outside,
The switch cover is provided with a plate in which an edge of the push button member is interposed between the switch cover and the switch cover . The switch according to claim 1, wherein
The switch characterized in that the movable contact is a dome spring.   A switch module comprising a plurality of the switches according to claim 1 installed in a module. The switch module according to claim 3, wherein
A switch module comprising two of the above switches. The switch module according to claim 4, wherein
A seesaw member is installed,
When the movable contact of one switch is pressed and brought into contact with the normally open contact, the pressing of the movable contact of the other switch is restricted by the seesaw member,
A switch module, wherein when the movable contact of the other switch is pressed and brought into contact with the normally open contact, the pressing of the movable contact of one switch is restricted by the seesaw member. The switch module according to claim 5, wherein
A switch module, wherein pressing members for pressing the movable contacts of the two switches via the seesaw member are installed. The switch module according to claim 6, wherein
An intermediate operation member made of a rotating body is interposed between the pressing operation member and the seesaw member, respectively. The switch module according to claim 7, wherein
The switch module, wherein the intermediate operation member is a spherical member. The switch module according to any one of claims 4 to 8,
A wiring member is inserted into a through hole provided in each normally closed contact of the two switches, and a desired connection state is obtained by inserting the wiring member into a through hole provided in each normally open contact. A switch module characterized by that.   An electric driver using the switch or switch module according to any one of claims 1 to 9. The electric driver according to claim 10, wherein
There is a fixing screw that passes through the switch cover and fixes the switch module,
The switch cover is formed with a fixing screw through hole through which the fixing screw is passed,
The head of the fixing screw has a tapered shape, and the fixing screw through hole is formed with a tapered portion that abuts the head of the fixing screw.
Electric driver characterized that you have an annular groove on the head of the fixing screw is being formed packing between the inner peripheral surface of the annular groove and the fixing screw through hole is inserted. In the electric driver according to claim 10 or claim 11,
An electric driver characterized by being for medical use.

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