JP5654895B2 - Multi tap - Google Patents

Description

  The present invention relates to a multi-tap.

  As this type of multi-tap, a table tap with a switch has been conventionally proposed (see, for example, Patent Document 1).

  FIG. 11A is a perspective view of a conventional table tap, and FIG. 11B is a perspective view of a blade receiving block housed in the table tap.

  The device body 100 of the table tap is formed in a rectangular parallelepiped shape, and two sets of plug connection ports 103 are provided on the side surface 101 of the device body 100 in two sets. Further, on the upper surface 102 of the vessel body 100, operation handles 120 provided corresponding to the plug connection ports 103 of the respective sets are disposed so as to be swingable.

  Inside the vessel body 100, blade receiving blocks 110 are accommodated corresponding to the respective sets of plug connection ports 103. Each blade receiving block 110 includes blade receiving springs 111 a and 111 b respectively connected to plug blades (not shown) inserted from the corresponding plug connection ports 103. In addition, two lead plates 130a and 130b are accommodated inside the container body 100, and corresponding lead wires of the power cord 150 are connected to the lead plates 130a and 130b, respectively. The three blade receiving blocks 110 are arranged side by side in the body 100, and the two lead plates 130a and 130b are provided so as to penetrate the body of each blade receiving block 110.

  Of the two blade receiving springs 111a and 111b provided in each blade receiving block 110, one blade receiving spring 111b is provided integrally with one lead plate 130b. Further, as shown in FIG. 11C, the other lead plate 130b is provided with a terminal piece 131 at a position to be inserted into the body of each blade receiving block 110, and a contact 132 is fixed to each terminal piece 131. ing. The other blade receiving spring 111a is electrically connected to an armature that rotates according to the swinging operation of the operation handle 120. Then, in response to the swinging operation of the operation handle 120, the armature swings between an ON position that contacts the contact 132 and an OFF position that is separated from the contact 132, thereby supplying power to the blade receiving spring 111a. It is turned on and off.

JP 2004-221035 A

  In the conventional table tap described above, a plurality of contacts 132 are fixed to one lead plate 130a. When forming such a part by press working, after pressing the sheet metal, the contact part is supplied to the part that becomes the terminal piece 131 and crimped. However, the contact part must be supplied to a plurality of places. Therefore, there is a problem that the manufacturing cost of the progressive die is increased.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a multi-tap that is intended to reduce manufacturing costs.

  In order to solve the above problems, the multi-tap of the present application includes a plurality of blade receiving blocks to which plugs are detachably connected, and a conductive plate for supplying power supplied from the outside to the plurality of blade receiving blocks. It comprises. Each of the plurality of blade receiving blocks includes a plurality of blade receiving members respectively connected to the plug blades of the plug, a fixed contact provided on at least one of the plurality of blade receiving members, and a movable contact. And an opening / closing mechanism that drives the movable contact so that the movable contact and the fixed contact are switched on / off according to the operation of the operation unit.

  In this multi-tap, it is also preferable to have a positioning structure for positioning the blade receiving member provided with the fixed contact on the body of each blade receiving block.

  In this multi-tap, the positioning structure may include a concave portion formed in the blade receiving member provided with the fixed contact, and a convex portion formed in the body of each blade receiving block and engaged with the concave portion. preferable.

  In this multi-tap, it is also preferable that the positioning structure includes a concave portion formed in the body of each blade receiving block and a convex portion formed in the blade receiving member provided with the fixed contact and engaged with the concave portion. .

In this multi-tap, the container includes a body that is formed of a thermosetting resin and houses the fixed contact and the movable contact, and a cover that is formed of a thermoplastic resin and houses the opening / closing mechanism. It is also preferred that a positioning structure is provided.
In this multi-tap, there are a plurality of conductive plates, the plurality of conductive plates penetrate through the blade body of each blade receiving block, and the blade receiving member not provided with the fixed contact is located inside the container body in the corresponding conductive plate. The conductive plate corresponding to the blade receiving member provided with the fixed contact is provided with a base piece in which a movable contact is disposed at the site inserted into the body. It is also preferable that the contact is configured to move between an on position and an off position with a contact portion with the base piece as a fulcrum.

  According to the present invention, the manufacturing cost can be reduced as compared with the prior art.

It is a disassembled perspective view of the blade receiving block which comprises this embodiment. It is an exploded perspective view same as the above. The same as the above, (a) is a plan view and (b) is a side view. It is a perspective view same as the above. It is a perspective view of the blade receiving member used for the same as the above. It is a disassembled perspective view of the blade receiving block used for the same as the above. It is a top view of the state which showed the blade receiving block used for the same as the above, and removed the cover. It is sectional drawing of the blade receiving block used for the same as the above. It is a disassembled perspective view of another blade receiving block used for the same as the above. It is sectional drawing of another blade receiving block used for the same as the above. (A) is a perspective view of a conventional table tap, (b) is a perspective view of a blade receiving block used in the above, and (c) is a perspective view of a lead plate used in the above.

  Hereinafter, an embodiment in which the present application is applied to a table tap will be described with reference to FIGS. In the following, a table tap will be described as an example, but the present application can be applied to a pendant type multi-tap that is suspended and a plug-in type multi-tap provided with a power blade instead of a power cord. It goes without saying that it is good. In the following description, three blade receiving blocks to which the plug is connected are provided. However, the number of the blade receiving blocks is not limited to three, and a plurality of blade receiving blocks may be provided.

  The table tap of this embodiment is used by being placed on a desk or a floor, for example. In the following description, unless otherwise specified, the upper and lower sides in use (that is, the upper and lower sides in FIG. 3B) are the up and down directions, the left and right sides in FIG. 3B are the left and right directions, and are perpendicular to the paper surface of FIG. An explanation will be given assuming that the appropriate direction is the front-rear direction and the lower side of FIG.

  As shown in FIGS. 2 to 4, the table tap body 1 is formed in an elongated rectangular parallelepiped shape, and includes a body 2, an upper cover 3, and an inner cover 4.

  The body 2 is made of a synthetic resin molded product, and is formed in a substantially rectangular box shape with an upper surface opened. The upper cover 3 is made of a synthetic resin molded product and is formed in a substantially rectangular box shape having an open bottom surface. The middle cover 4 is made of a synthetic resin molded product, and is formed in a substantially rectangular box shape with an open rear surface. On the front surface of the middle cover 4, protruding bases 5 having a substantially rectangular shape when viewed from the front are provided at three positions, left and right and in the center. Each protrusion 5 is formed with two plug blade insertion openings 6 into which parallel plug blades of plugs (not shown) are inserted. The middle cover 4 is housed in a space surrounded by the body 2 and the upper cover 3 with the protruding base 5 facing the front side. The front side wall of the body 2 is provided with three concave grooves 7 into which the lower side portions of the corresponding protrusions 5 are inserted. Similarly, the front side wall of the upper cover 3 is also provided with three concave grooves 8 into which the upper portions of the corresponding protrusions 5 are inserted.

  At the opening edge of the upper cover 3, there are several claws 10 that engage with the grooves 9 formed in the body 2. When the body 2 is covered with the upper cover 3 so as to close the opening of the body 2, When the claw 10 is engaged with the groove 9, the upper cover 3 is temporarily fixed to the body 2. The body 2 and the upper cover 3 are coupled to each other by screwing the screw 12 passed through the through hole 11 provided in the body 2 into a screw hole (not shown) provided in the upper cover 3.

  Housed in the container 1 are three blade receiving blocks 20a, 20b, 20c and conductive plates 40a, 40b for supplying power to the blade receiving blocks 20a, 20b, 20c.

  The two conductive plates 40a and 40b are each formed in a long and narrow plate shape with a metal having good conductivity (for example, copper alloy), and caulking pieces 41a and 41b are provided on one end side (left side) in the longitudinal direction. It has been. A round hole-like through hole for introducing the power cord 50 from the outside is formed on the left side surface of the container 1, and the core wires 51 of the power cord 50 introduced into the inside through this through hole are respectively Caulking pieces 41a and 41b are caulked and fixed. Therefore, when a plug (not shown) provided on the other end of the power cord 50 is connected to a power outlet, power is supplied to the conductive plates 40a and 40b via the power cord 50. Note that a portion of the power cord 50 that is led out from the container 1 is covered with a bushing 52 formed of a synthetic resin having elasticity, so that the power cord 50 is not easily disconnected.

  Next, the blade receiving blocks 20a, 20b, and 20c will be described. Since the blade receiving blocks 20a, 20b, and 20c have the same configuration, the blade receiving block 20a will be described with reference to FIG. 1, and the other blade receiving blocks 20b and 20c are common to the blade receiving block 20a. Constituent elements are denoted by the same reference numerals and description thereof is omitted. In FIG. 1, only the blade receiving block 20a is shown for the sake of simplicity.

  The container body 21 of the blade receiving block 20a includes a body 22 and a cover 23. The body 22 is formed in a substantially box shape whose upper surface is opened by a thermosetting resin (for example, urea resin) having excellent heat resistance and tracking resistance, and the inside thereof is partitioned into a plurality of spaces by partition walls. The cover 23 is formed of a thermoplastic resin excellent in impact resistance (for example, ABS resin) and has a cylindrical storage portion 23a having an open upper surface. Further, the assembly pieces 23b protrude downward from the left and right side portions of the cover 23. By engaging the holes 23c of the assembly pieces 23b with the protrusions 22h provided on the side walls of the body 22, the body 22 and the cover 23 is combined.

  The cover 23 is provided with a positioning projection 23 e that engages with a hole provided in the middle cover 4 at a portion facing the middle cover 4. Further, on the bottom surface of the cover 23, a projection 23g that engages with a hole 47a provided in the attachment piece 47 of the blade receiving member 45 is provided.

  An accommodation recess 22f that accommodates a contact portion (described later, consisting of a fixed contact 49 and a movable contact 25) is provided at the center in the front-rear direction of the body 22. In the body 22, a slit 22 a that is open on the upper side and the left and right sides is formed in front of the housing recess 22 f, and a conductive plate 40 a is inserted into the slit 22 a. In the body 22, a slit 22 b that is open on the upper side and the left and right sides is formed on the rear side of the housing recess 22 f, and a conductive plate 40 b is inserted into the slit 22 b.

  In the body 22, front side portions of the slits 22a are provided with concave portions 22c and 22d whose upper side and front side are opened, respectively. A blade receiving spring 42 provided in a corresponding portion of the conductive plate 40a is accommodated in the left recess 22c. A blade receiving spring 46 provided on the blade receiving member 45 is accommodated in the right concave portion 22d.

  FIG. 5 is a perspective view of the blade receiving member 45. The blade receiving member 45 is formed by, for example, pressing a sheet metal made of a copper alloy. The blade receiving member 45 includes a blade receiving spring 46 that sandwiches the plug blade between a pair of spring pieces. A rectangular plate-shaped attachment piece 47 extends rearward from the rear portion of the blade receiving spring 46, and this attachment piece 47 is placed on the partition wall 22e between the slit 22a and the recess 22d. A fixed terminal piece 48 extends obliquely downward from the rear part of the mounting piece 47, and a fixed contact 49 is fixed to the fixed terminal piece 48 by a method such as caulking or laser welding. The fixed terminal piece 48 is inserted into the storage recess 22f, and the fixed contact 49 is disposed in the storage recess 22f. The conductive plate 40b is provided with an L-shaped base piece 43 disposed at the bottom of the storage recess 22f at a portion corresponding to the storage recess 22f of each blade receiving block 20a, 20b, 20c.

  A movable contact plate 24 made of a conductive plate is housed in the housing recess 22f. The movable contact plate 24 is provided with a movable contact 25 at a position corresponding to the fixed contact 49 of the blade receiving member 45. The movable contact plate 24 is disposed on the base piece 43 and rotates back and forth using a contact portion with the base piece 43 as a fulcrum. Further, the protrusion 24a provided on the side edge of the movable contact plate 24 is inserted into the V groove 22g provided on the inner wall of the housing recess 22f, so that the rotation range of the movable contact plate 24 is restricted.

  The opening / closing mechanism 26 for driving the movable contact plate 24 includes a coil spring 27, a driver 28, a slide cam 29, a leaf spring 30, and a push button 31. The opening / closing mechanism 26 is shown in FIGS. Description will be given with reference to FIG.

  On one end side of the coil spring 27, a spring receiving projection 24b provided on the upper portion of the movable contact plate 24 is inserted. The other end side of the coil spring 27 is inserted into a cylindrical portion 28 a provided on the driver element 28.

  The driver 28 is made of a synthetic resin molded product, and includes a cylindrical portion 28a that opens downward. The drive element 28 is rotatably attached to the cover 23 by fitting triangular shafts 28 b provided on both sides into the bearing grooves 23 d of the cover 23. A pair of protrusions 28c and 28d that push the slide cam 29 are provided on the upper portion of the driver element 28, and one of the protrusions 28c and 28d is positioned on the upper side and the other is positioned on the lower side according to the rotation of the driver element 28. Will do. Then, the protrusion 28c or the protrusion 28d located on the upper side is pushed by the slide cam 29, so that the driver element 28 rotates to the opposite side.

  The push button 31 is made of a synthetic resin molded product, and has an upper plate portion 31b having a substantially rectangular shape in plan view, and a side portion 31c that protrudes downward from the entire circumference of the upper plate portion 31b. It is arranged in 23a so as to be movable up and down. The upper plate portion 31 b of the push button 31 is exposed to the outside from the window hole 14 provided on the upper surface of the upper cover 3, and the user can push the upper plate portion 31 b through the window hole 14. Compared with the table tap provided with the conventional tumbler type handle, the push button 31 has substantially the same surface height as the upper surface of the upper cover 3, so that the push button 31 is not conspicuous and the design is improved.

  A slide cam 29 is attached to the back surface of the upper plate portion 31b. The slide cam 29 is formed in a square frame shape from a synthetic resin. Of the four sides of the slide cam 29, two sides facing each other in the rotation direction of the driver element 28 are provided with a cam part 29a and a cam part 29b to which the protrusion 28c and the protrusion 28d of the driver element 28 are engaged, respectively. A pair of spring pieces 29c and 29d project from one side of the remaining two sides of the slide cam 29 toward the other side, and the spring pieces 29c and 29d are closer to each other toward the tip. It protrudes diagonally to shorten the distance. A protrusion provided on the back surface of the upper plate portion 31b is inserted between the spring pieces 29c and 29d. When the slide cam 29 is lowered as the push button 31 is lowered while the driver element 28 is rotating clockwise in FIG. 8, the corresponding cam portion 29a pushes the protrusion 28c located on the upper side, thereby sliding. The cam 29 moves forward. At this time, the rear spring piece 29c is bent by the protrusion on the back surface of the upper plate portion 31b, and a restoring force for returning the slide cam 29 to the center position is generated by the spring force of the spring piece 29c. When the drive cam 28 is rotating counterclockwise in FIG. 8 and the slide cam 29 is lowered as the push button 31 is lowered, the corresponding cam portion 29b pushes the protrusion 28d located on the upper side, The slide cam 29 moves backward. At this time, the front spring piece 29d is bent by the protrusion on the back surface of the upper plate portion 31b, and a restoring force for returning the slide cam 29 to the center position is generated by the spring force of the spring piece 29d.

  A leaf spring 30 is disposed between the bottom of the storage portion 23 a and the push button 31, and the push button 31 always receives an upward elastic force by the leaf spring 30. The side portion 31c of the push button 31 is provided with one protrusion 31d on the left and right to engage with the groove 23f provided on the inner wall of the storage portion 23a, and the protrusion 31d and the groove 23f are engaged with each other. The push button 31 is prevented from being removed. Here, with the slide cam 29 held on the lower surface of the upper plate portion 31b, the leaf spring 30 is press-fitted and fixed to the lower surface side of the push button 31, and the slide cam 29 is interposed between the plate spring 30 and the upper plate portion 31b. Is to be retained.

  Further, a display body 32 for displaying the power supply state to the blade receiving springs 42 and 46 is slidably attached to the lower surface side of the upper plate portion 31b, and a part of the display body 32 is attached to the upper plate portion 31b. A display window 31a to be exposed is provided. The display window 31a is closed with a lid made of a transparent synthetic resin.

  On the upper surface of the display body 32, a half on one side in the sliding direction is an ON display unit 32a that displays a power supply state, and an half on the opposite side is an OFF display unit 32b that displays a power supply stop state. The display body 32 is slidable between an ON position where the ON display portion 32a faces the display window 31a and an OFF position where the OFF display portion 32b faces the display window 31a. The display body 32 always receives the elastic force in the direction of moving to the OFF position by the coil spring 33, and the OFF display portion 32b is exposed from the display window 31a when the contact is open. The above-described driver element 28 is integrally provided with an L-shaped arm 28e that presses a tapered surface 32c provided on the lower surface of the display body 32. As shown in FIG. 8, when the driver 28 is rotated in a direction in which the movable contact 25 and the fixed contact 49 are brought into contact with each other, the arm 28e pushes the display body 32 and moves the display body 32 to the ON position. The ON display portion 32a is exposed from the window 31a.

  Here, the operation of the opening / closing mechanism 26 will be briefly described.

  First, the operation when the user presses the push button 31 while the movable contact 25 is in contact with the fixed contact 49 as shown in FIG. 8 will be described. Note that an operation of pressing the push button 31 once in a state where the contact is closed is an off operation. When the push button 31 is not pushed, the push button 31 is moved upward by the leaf spring 30. When the user pushes the upper plate portion 31b of the push button 31 downward from this state, the push button 31 is pushed down against the spring force of the leaf spring 30, and the slide cam 29 held by the push button 31 is also lowered. Moving. When the slide cam 29 is lowered, the left cam portion 29a in the drawing hits the left projection 28c of the driving member 28, thereby rotating the driving member 28 counterclockwise in the drawing. Thus, when the driver element 28 rotates counterclockwise in the figure, the movable contact plate 24 rotates clockwise in the figure, and the movable contact 25 is separated from the fixed contact 49. At this time, due to the spring force of the coil spring 27, the driver element 28 is held in a state where the protrusion 28c side is lowered compared to the protrusion 28d, and the movable contact plate 24 is held in a state where it is tilted to the right side. Further, since the arm 28e moves downward in accordance with the rotation of the driver 28, the display body 32 moves to the OFF position by the spring force of the coil spring 33, and the OFF display portion 32b is exposed from the display window 31a. When the user releases the push button 31, the push button 31 is moved upward by the spring force of the leaf spring 30, and the slide cam 29 is returned to the center position by receiving the spring force of the spring piece 29c.

  Next, an operation when the user pushes the push button 31 while the movable contact 25 is separated from the fixed contact 49 will be described. Note that an operation of pressing the push button 31 once in a state where the contact is open is an ON operation. When the user pushes the upper plate portion 31b of the push button 31 downward, the push button 31 is pushed down against the spring force of the leaf spring 30, and the slide cam 29 held by the push button 31 also moves downward. When the slide cam 29 is lowered, the right cam portion 29b in the figure hits the right projection 28d of the drive element 28, thereby rotating the drive element 28 clockwise in the figure. When the driver element 28 rotates clockwise in the figure as described above, the movable contact plate 24 rotates counterclockwise in the figure, and the movable contact 25 comes into contact with the fixed contact 49. At this time, due to the spring force of the coil spring 27, the driver element 28 is held in a state where the protrusion 28d side is lowered compared to the protrusion 28c, and the movable contact plate 24 is held in a state where it is tilted to the left side. Further, the arm 28e moves upward according to the rotation of the driver 28, the display body 32 is pushed to the ON position side against the spring force of the coil spring 33 by the arm 28e, and the display body 32 moves to the ON position. Therefore, the ON display part 32a of the display body 32 is exposed from the display window 31a. When the user releases the push button 31, the push button 31 is moved upward by the spring force of the leaf spring 30, and the slide cam 29 is returned to the center position by receiving the spring force of the spring piece 29c.

  In this way, each time the user presses the push button 31 once, the switching mechanism 26 alternately switches the contact (consisting of the fixed contact 49 and the movable contact 25) between the on state and the off state. is there.

  As described above, the multi-tap of the present embodiment supplies power to the plurality of blade receiving blocks 20a, 20b, 20c and the plurality of blade receiving blocks 20a, 20b, 20c to which the plugs are detachably connected. Conductive plates 40a and 40b. Each of the plurality of blade receiving blocks (blade receiving blocks 20a, 20b, 20c in the present embodiment) includes a plurality of blade receiving members (the blade receiving spring 42 and the blade receiving member 45) respectively connected to the plug blade of the plug; A movable contact (movable) having a fixed contact 49 provided on at least one of the blade receiving members (blade receiving member 45) and a movable contact 25 and electrically connected to the conductive plate (conductive plate 40b). A contact plate 24) and an opening / closing mechanism 26 for driving the movable contact so that the movable contact 25 and the fixed contact 49 are switched on / off according to the operation of the operation unit (push button 31) are provided.

  As a result, since one fixed contact 49 is provided for one blade receiving member 45, the progressive die is compared with the case where a plurality of contacts are provided for one component as in the conventional example. Cost can be reduced, and the manufacturing cost of the multi-tap can be reduced as compared with the conventional case.

  Moreover, in this embodiment, the positioning structure for positioning the blade receiving member 45 provided with the fixed contact 49 to the container 21 of each blade receiving block 20a, 20b, 20c is provided.

  As a result, the blade receiving member 45 can be more firmly positioned with respect to the body 21 of the blade receiving block, and the position of the blade receiving member 45 becomes difficult to move when the plug blade of the plug is connected to the blade receiving member 45. Therefore, the position of the fixed contact 49 provided on the blade receiving member 45 is stabilized, and the reliability of the electrical connection between the fixed contact 49 and the movable contact 25 is improved. In addition, since the position of the blade receiving member is stabilized, there is an advantage that it is easy to connect the plug.

  In the present embodiment, the above positioning structure is formed in the recess (hole 47a) formed in the blade receiving member 45 provided with the fixed contact 49 and in the container body 21 of each blade receiving block. It includes a protrusion (protrusion 23g) that engages with the hole 47a).

  As a result, the blade receiving member 45 can be more firmly positioned with respect to the body 21 of the blade receiving block, and the position of the blade receiving member 45 becomes difficult to move when the plug blade of the plug is connected to the blade receiving member 45. Therefore, the position of the fixed contact 49 provided on the blade receiving member 45 is stabilized, and the reliability of the electrical connection between the fixed contact 49 and the movable contact 25 is improved.

  In the present embodiment, the body 21 of each blade receiving block is formed of a thermosetting resin, and is formed of a body 22 that houses a fixed contact and a movable contact, and a thermoplastic resin, and houses the opening / closing mechanism 26. And a cover 23. And the convex part (protrusion 23g in this embodiment) which comprises a positioning structure is provided in the cover 23 formed with the thermoplastic resin.

  As described above, the body 22 that accommodates the fixed contact 49 and the movable contact plate 24 generates a high-temperature arc at the time of opening, and therefore is a thermoplastic resin that is superior in heat resistance and tracking resistance compared to a thermosetting resin. Is formed. On the other hand, the cover 23 is formed of a thermosetting resin that is superior in impact resistance compared to a thermoplastic resin, and a convex portion for positioning the blade receiving member is formed on the cover 23. The strength of the part can be improved. Therefore, the blade receiving member can be positioned more firmly with respect to the cover 23, and the position of the blade receiving member 45 is less likely to move when the plug is connected. Therefore, the reliability of the electrical connection between the fixed contact 49 and the movable contact 25 is improved. .

  By the way, in this embodiment, the blade receiving member 45 provided with the fixed contact 49 is provided with a recess (hole 47a), and the cover 23 is provided with a projection 23g. However, as shown in FIGS. The blade receiving member 45 may be provided with a recess 23h on the bottom surface of 23 and a protrusion 47b that engages with the recess 23h.

  As described above, the positioning structure is formed in the recess (recess 23h) formed in the body 21 of each blade receiving block and the blade receiving member 45 provided with the fixed contact 49, and engages with the recess. It is also preferable to include a convex portion (protrusion 47b).

  Accordingly, by engaging the convex portion of the blade receiving member 45 with the concave portion of the container body 21, the blade receiving member 45 can be positioned more firmly with respect to the container body 21 of the blade receiving block. Therefore, when the plug blade of the plug is connected to the blade receiving member 45, the position of the blade receiving member 45 becomes difficult to move, and the reliability of the electrical connection between the fixed contact 49 and the movable contact 25 is improved.

  In this case, the cover 23 made of a thermoplastic resin is provided with a recess 23h that constitutes a positioning structure.

  Thereby, since the recessed part for positioning a blade receiving member is formed in the cover 23 formed with the thermosetting resin excellent in impact resistance compared with the thermoplastic resin which forms the body 22, the surrounding wall of a recessed part The strength of can be improved. Therefore, the blade receiving member can be positioned more firmly with respect to the cover 23, and the position of the blade receiving member 45 is less likely to move when the plug is connected. Therefore, the reliability of the electrical connection between the fixed contact 49 and the movable contact 25 is improved. .

  Further, in the present embodiment, the on / off display is performed by the display body 32, and the power consumption can be reduced as compared with a display having a lamp for on / off display.

20a, 20b, 20c Blade receiving block 25 Movable contact 26 Opening / closing mechanism 24 Movable contact plate 31 Push button 31b Operation unit 40a, 40b Conductive plate 42 Blade receiving spring (blade receiving member)
45 Blade receiving member 49 Fixed contact

Claims (6)

  Each of the plurality of blade receiving blocks includes a plurality of blade receiving blocks to which plugs are detachably connected, and a conductive plate for supplying power supplied from the outside to the plurality of blade receiving blocks. A plurality of blade receiving members respectively connected to the plug blades of the plug, a fixed contact provided on at least one of the plurality of blade receiving members, and a movable contact and electrically connected to the conductive plate A multi-tap, comprising: a movable contact that is made, and an opening / closing mechanism that drives the movable contact so that the movable contact and the fixed contact are switched on and off in accordance with an operation of an operation unit.   The multi-tap according to claim 1, further comprising a positioning structure for positioning the blade receiving member provided with the fixed contact on the body of each blade receiving block.   The positioning structure includes a concave portion formed in the blade receiving member provided with the fixed contact, and a convex portion formed in the body of each blade receiving block and engaged with the concave portion. The multi-tap according to claim 2, wherein:   The positioning structure includes a recessed portion formed in the body of each blade receiving block, and a protruding portion formed in the blade receiving member provided with the fixed contact and engaged with the recessed portion. The multi-tap according to claim 2. The device body comprises a body for accommodating a pre SL stationary contact and said movable contact is formed with a thermosetting resin, and a cover that houses the pre-Symbol closing mechanism is formed of a thermoplastic resin, the cover claim 3 or 4 multi-tap, wherein the pre-Symbol positioning structure is provided.   There are a plurality of the conductive plates,
  A plurality of the conductive plates pass through the body of each blade receiving block,
  The blade receiving member not provided with the fixed contact is provided in a portion of the corresponding conductive plate to be inserted into the container body,
  The conductive plate corresponding to the blade receiving member provided with the fixed contact is provided with a base piece on which the movable contact is disposed at a portion to be inserted into the body,
  The said movable contact is comprised so that it may move between an ON position and an OFF position by making a contact site | part with the said base piece into a fulcrum, The any one of Claims 1-5 characterized by the above-mentioned. Multi tap.

Images