JP2006012421A - Table tap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table tap capable of preventing dielectric deterioration by a liquid such as water by making it difficult for the liquid to penetrate into the inner part. <P>SOLUTION: The table tap comprises a plurality of plug socket parts 20 including plug blade insert holes 11 for inserting the plug blades of plugs and blade receiving springs 20a receiving the plug blades inserted to the inner part through the plug blade insert holes 11; a plurality of switches 30 each including a switch main body 31 independently making ON/OFF the feed from an external power source to each plug socket part 20 and a switch operation part 32 performing the ON/OFF operation; and a hull 1 for storing the plug socket parts 20 and the switch main body 31, which has a plurality of exposure windows 3c for exposing each switch operation part 32 to the outside. A waterproof sheet 6 is arranged between each switch body 31 and the opening periphery of each exposure window 3c of the hull 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a table tap.

  FIG. 21 is an exploded perspective view of a conventional table tap, and there are four outlet portions 20 and 4 inside the outer shell 1 made of a body 2 and a cover 3 each formed of a synthetic resin having impact resistance. The outlet module 4 including the individual switches 30 is mounted, and the outlet portion 20 has the outlet cover 5 having four sets of plug blade insertion holes 11 formed on the front surface thereof.

  The body 2 is formed in a rectangular box shape whose front surface is open, and the cover 3 is formed in a substantially rectangular box shape whose rear surface is open. And on the front surface of the cover 3, four elongated exposure windows 3c for exposing the switch operation part 32 as a handle-like operation part of the switch body 31 are opened in a line along the longitudinal direction.

  The outlet module 4 includes a long inner case 4a and is housed inside the body 2 such that the longitudinal direction thereof is along the longitudinal direction of the body 2, and the inner case 4a has 4 on one side in the short width direction. The single outlet portion 20 is provided in a line along the longitudinal direction. The outlet portion 20 is provided with a pair of blade receiving springs 20a for receiving plug blades of plugs inserted from the respective plug blade insertion holes 11 so as to protrude to one side in the short width direction of the inner case 4a. The spring 20a is electrically connected to the inner case 4a. The blade receiving springs 20a are opposed to the plug blade insertion holes 11, respectively.

  Inside the inner case 4a, conductive plates 41 and 42 that are respectively electrically connected to a pair of insulated core wires 51 of the power cable 50 are accommodated along the longitudinal direction of the inner case 4a. Crimping crimping portions 41a and 42a are respectively provided at one end portions of the conductive plates 41 and 42 on the side of the electric wire insertion port, and the core wire 51 and the conductive plate are inserted by caulking the caulking crimping portions 41a and 42a. 41 and 42 can be electrically and mechanically connected to each other. An overvoltage protection element 8 is connected between the other end portions of the conductive plates 41 and 42.

Further, two switch bodies 4b are integrally formed in the front portion of the inner case 4a along the longitudinal direction, and two switch bodies 31 are formed in each switch body 4b. A switch operation section 32 is swingably mounted in each switch storage chamber 4d provided by partitioning each switch body 4b, and a contact section (not shown) that is turned on / off in response to the swing operation of the switch operation section 32. Z)). These switches 30 are provided corresponding to the respective outlet units 20, and each time the switch operation unit 32 is swung, the contact portion of the switch body 31 is opened and closed, and power supply from the external power source to each outlet unit 20 is individually performed. On / off. (For example, see Patent Document 1)
Also, the plug blade insertion hole 11 of the outlet portion 20 is closed from the inside of the outer shell 1, and an elastic dustproof piece that opens the plug blade insertion hole 11 by receiving the pressure of the plug blade when the plug blade is inserted is provided, Some have prevented dust from entering the outer shell 1 through the plug blade insertion hole 11. (For example, see Patent Document 2)
JP 2002-246123 A JP 2004-95285 A

  However, in the above conventional example, there is a structural gap between the switch operation unit 32 and the exposed window 3c of the cover 3, and when liquid such as water is applied, the liquid enters the outer shell 1 through the gap. When the liquid is accumulated between the charging metal parts such as the blade receiving spring 20a and the conductive plates 41 and 42 in the outer shell 1, there is a problem that insulation deterioration occurs.

  The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a table tap in which a liquid such as water is difficult to enter and the insulation deterioration due to the liquid is prevented.

  According to a first aspect of the present invention, there is provided a plurality of outlet portions including a plug blade insertion hole into which a plug blade of a plug is inserted, a blade receiving spring for receiving a plug blade inserted into the plug blade from the plug blade insertion hole, and an external power source. A plurality of switches comprising a switch body for individually turning on / off the power supply to each outlet section and a switch operation section for performing the on / off operation; and each switch operation section for housing the outlet section and the switch body. And an outer shell having a plurality of openings each exposed to the outside, and a sheet is disposed between the switch body and the outer periphery of the opening of the outer shell.

  According to the present invention, it is difficult for a liquid such as water to enter the inside of the outer shell, and insulation deterioration due to the liquid can be prevented.

  According to a second aspect of the present invention, in the first aspect, the sheet includes a plurality of sheets for each peripheral edge of the opening of the outline.

  According to the present invention, the same sheet can be used for a plurality of types having different numbers of switches, and a plurality of types can be handled while suppressing investment.

  According to a third aspect of the present invention, in the first or second aspect, the first sheet and the second sheet having substantially the same flexibility are disposed so as to overlap each other between the switch body and the opening peripheral edge of the outer shell. It is characterized by that.

  According to the present invention, only the sheet on the opening side of the outer shell is displaced during assembly, and the sheet on the switch body side is in close contact with the switch operating portion, so that the waterproof performance is not lost.

  According to a fourth aspect of the present invention, in the first or second aspect, the first sheet, the second sheet, and the third sheet having substantially the same flexibility between the switch body and the opening periphery of the outer shell. It is characterized by being arranged in layers.

  According to this invention, the waterproof performance can be further improved as compared with the third aspect.

  According to a fifth aspect of the present invention, in the first or second aspect, the sheet is thinly formed in the vicinity of the opening of the outer shell.

  According to this invention, durability and waterproofness can be ensured by a single sheet.

  A sixth aspect of the present invention provides the seat according to any one of the first, second, and fifth aspects, wherein the seat forms an insertion hole for allowing the switch operating portion to pass therethrough, and a wall portion along the periphery of the insertion hole is formed in the outer wall. It is characterized by projecting toward the opening.

  According to the present invention, the position of the switch operating portion and the seat can be prevented by matching the wall portion of the seat with the opening periphery of the outer shell, and stable waterproof performance can be ensured.

  The invention of claim 7 is characterized in that, in claim 6, a surface substantially parallel to the opening surface of the insertion hole is provided from the tip of the wall portion.

  According to the present invention, the adhesion to the switch operating portion is increased, and the strength is further increased, so that deformation at the time of molding the mold can be prevented and molding becomes easy.

  The invention of claim 8 is the invention according to any one of claims 1 to 7, wherein the sheet is made of a thin flexible synthetic rubber sheet, and the insertion hole formed in the sheet for inserting the switch operating portion is the It is smaller than the outer shape of the switch operation unit.

  According to this invention, the adhesiveness between the sheet and the switch operation unit can be improved.

  A ninth aspect of the invention is characterized in that, in any one of the first to eighth aspects, the surface of the sheet has water repellency.

  According to this invention, for example, oil application or fluororesin coating is applied to the surface of the sheet, or moisture that tends to enter the outer shell can be repelled by using a silicon sheet.

  A tenth aspect of the present invention is the electronic device according to any one of the first to ninth aspects, wherein the switch operation portion includes an energization display means of the outlet portion, and the switch operation portion is a PC resin, an AS resin, an ABS resin, or a PS. It is formed of a transparent or translucent thermoplastic resin made of resin or acrylic resin.

  According to the present invention, the display state of the energization display means can be confirmed from the outside.

  The invention of claim 11 is characterized in that, in claim 10, the sheet uses a synthetic rubber containing no phthalic acid additive as a plasticizer.

  According to the present invention, even when the sheet comes into contact with the switch operation portion made of PC resin, AS resin, ABS resin, PS resin, or acrylic resin, the sheet and the switch are not affected by the plasticizer. Neither close contact with the operation unit nor cracking of the switch operation unit occurs.

  The invention of claim 12 is characterized in that, in claim 11, the sheet uses paraffinic, naphthenic, or aroma-based process oil as a plasticizer.

  According to the present invention, an effect similar to that of the eleventh aspect is obtained.

  The invention of claim 13 is characterized in that, in claim 11, the sheet is made of ethylene propylene rubber or chloroprene rubber.

  According to the present invention, an effect similar to that of the eleventh aspect is obtained.

  The invention of a fourteenth aspect is the invention according to the first or second aspect, wherein the first sheet disposed on the peripheral edge of the opening is disposed between the switch main body and the opening peripheral edge of the outer shell, and is disposed on the switch main body side. The second sheet that is harder than the first sheet is disposed so as to overlap.

  According to the present invention, even when the switch is frequently operated, the waterproof performance is not lost, and both durability and waterproof performance can be achieved and liquid can be reliably prevented from entering the outer shell.

  A fifteenth aspect of the invention is characterized in that, in the first aspect, the sheet is formed on one sheet disposed between all the switch main bodies and all the opening rims of the outer shell.

  According to the present invention, it is possible to handle a plurality of switches with one sheet, and the assemblability is good.

  According to a sixteenth aspect of the present invention, in the first or second aspect, a rib is provided along the periphery of each opening on the inner surface of the outer shell, and the surface of the sheet facing the rib is fitted into the rib. Protruding portions are provided.

  According to the present invention, the sheet can be temporarily fixed to the outer shell, positioning becomes easy, and assembly efficiency is improved.

  According to a seventeenth aspect of the present invention, in the first or second aspect, the sheet is integrally formed between the switch main body and an opening peripheral edge of the outer shell, and an opening side from the flange portion. And a covering portion that covers the switch operating portion.

  According to the present invention, it is possible to reduce deterioration in waterproof performance due to the displacement of the seat during switch operation and assembly.

  The invention of claim 18 is characterized in that, in any one of claims 1 to 17, the switch body is formed with a mounting hole for mounting the switch operation part along the outer surface of the switch operation part. .

  According to the present invention, the arc generated when the switch contacts are opened and closed is difficult to see. Furthermore, the sheet can be more reliably pressed by the outer peripheral edge of the opening.

  The invention of claim 19 is characterized in that, in claim 1, the periphery of the metal part electrically connected to the blade receiving spring is potted with resin.

  According to this invention, the penetration of liquid such as water can be further prevented by potting, and insulation deterioration due to the liquid can be prevented.

  As described above, according to the present invention, there is an effect that the sheet prevents water and other liquids that enter the outer shell and prevents insulation deterioration due to the liquid.

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

(Embodiment 1)
Embodiments of the present invention will be described below with reference to FIGS.

  As shown in FIG. 1, the table tap of this embodiment has an outer shell 1 made up of a body 2 and a cover 3, each formed of a synthetic resin having impact resistance, and the outer shell 1 has four outer shells 1. The outlet module 4 having the outlet portion 20 and the four switches 30 is mounted, and the outlet portion 20 has the outlet cover 5 having four sets of plug blade insertion holes 11 formed on the front surface thereof.

  The body 2 is formed in a rectangular box shape with an open front, and a recess (not shown) for inserting a power cable 50 (described later) into the outer shell 1 at the peripheral edge portion joined to the cover 3 on the side wall 2a on one end side in the longitudinal direction. None) is formed.

  On the other hand, the cover 3 is formed in a substantially rectangular box shape with an open rear surface, and an inclined surface 3b inclined obliquely rearward with respect to the front surface 3a is formed on one side in the short width direction. On the front surface 3a of the cover 3, four elongate exposure windows 3c for exposing the switch operation portions 32 as the handle-like operation portions of the switch body 31 are opened in a line along the longitudinal direction. The inclined surface 3b is covered with a cover portion 12. The cover portion 12 is attached to the cover 3 by engaging a locking piece 12a provided at the end portion with a locking hole 3g provided in the cover 3. Is done. A recess 3d (see FIG. 12) is formed on the side wall on one end side in the longitudinal direction of the cover 3, and a power cable 50 (to be described later) is placed inside the outer shell 1 by the recess of the body 2 and the recess 3d of the cover 3. An electric wire insertion slot to be inserted is configured.

  The outlet module 4 includes a long inner case 4a and is housed inside the body 2 such that the longitudinal direction thereof is along the longitudinal direction of the body 2, and the inner case 4a has 4 on one side in the short width direction. The single outlet portion 20 is provided in a line along the longitudinal direction. The outlet portion 20 is configured by fitting the outlet cover 5 to a protrusion 4k provided on one side in the short width direction of the inner case 4a. 2A to 2D, a pair of blade receiving springs 20a for receiving the plug blades of the plugs inserted from the respective plug blade insertion holes 11 are provided in the short width direction of the inner case 4a. The blade receiving springs 20 a face the plug blade insertion holes 11 of the outlet cover 5. The blade receiving springs 20a are electrically connected to the inner case 4a via the conductive plates 20b and 20c, and the conductive plates 20b and 20c are connected to the inner portions of the inner blade 4a from the blade receiving spring 20a via the rear surface of the inner case 4a. It is introduced into the case 4a.

  Inside the inner case 4a are stored conductive plates 41 and 42 that are electrically connected to a pair of insulated core wires 51 of the power cable 50, respectively. The conductive plates 41 and 42 are each a long sheet metal. Is formed by bending. On the bottom surface of the inner case 4a, insulating walls 4h and 4h are provided in parallel with both side surfaces in the longitudinal direction, and the conductive plates 41 and 42 are disposed between the side surface of the inner case 4a and the insulating wall 4h. It is stored along the direction. The crimping crimping portions 41a and 42a are respectively provided at one end portions of the conductive plates 41 and 42 on the side of the electric wire insertion port, and the core wires 51 and 51a are respectively inserted into the crimping crimping portions 41a and 42a and crimped. The conductive plates 41 and 42 can be electrically and mechanically connected to each other. An overvoltage protection element 8 is connected between the other end portions of the conductive plates 41 and 42.

  Further, the front part of the inner case 4a is formed integrally with two switch bodies 4b along the longitudinal direction, and the switch body 4b is formed in a rectangular frame shape having an opening in the front-rear direction and formed in the short width direction. The inside of the frame is divided into three rectangular areas by the two partition walls 4c and 4c, and the switch body 31 is configured with the rectangular areas at both ends as switch storage chambers 4d and 4d to store contact portions (not shown). . Further, shaft holes 4e are formed in both side surfaces of the switch storage chamber 4d, and as shown in FIG. 3, convex portions 32a provided on both sides of the switch operating portion 32 are pivotally supported in the shaft holes 4e, and shafts Sliding portions 32b provided at the approximate centers of the lower ends of both sides of the switch operating portion 32 are fitted into the notches 4g provided at the front ends of the support pieces 4f projecting from both side surfaces in the switch housing chamber 4d behind the hole 4e. The switch operation section 32 is swingably attached to the front surface of each switch storage chamber 4d. And the contact part in each switch storage chamber 4d is turned on / off according to the swing operation of the switch operation part 32, and the connection terminals 34a to 34c electrically connected to the contact part from the rear surface of the inner case 4a. Protruding. Of the connection terminals 34a to 34c, the connection terminals 34a and 34b are respectively connected to both ends of the contact portion, and the connection terminal 34c is housed in the switch operation section 32 and is turned on when power is supplied to the load (see FIG. (Not shown) and electrically connected to the connection terminal 34b.

  Further, a plug (not shown) for connecting to an external power source is connected to one end of both core wires 51 of the power cable 50, and the other end is inserted into the outer shell 1 from the wire insertion port. And electrically connected to the conductive plates 41, 42. The power cable 50 is formed of an elastic synthetic resin, and is provided with a bushing 53 that covers the outer periphery of the power cable 50 and prevents the core wire 51 from being disconnected due to bending. The part 52 is provided integrally. A rib 9 protrudes from the bottom surface of the body 2 with a gap corresponding to the thickness of the flange 52 between the side wall 2a and the rib 10 (see FIG. 12), and when the body 2 and the cover 3 are joined together with the lower half of the flange 52 provided on the bushing 53 being inserted into the gap between the side wall 2a and the rib 9, The upper half of 52 is inserted between the side wall 3 f and the rib 10 and fixed to the outer shell 1. At this time, the portion of the power cable 50 drawn out from the outer shell 1 is protected by the bushing 53, and disconnection of the core wire 51 due to bending is prevented.

  The cover 3 is covered so that each opening face is opposed to the front surface of the body 2, and the three columnar bodies 2 b erected on the bottom surface of the body 2 are formed into pillars erected on the rear surface of the cover 3. The body 2 and the cover 3 are positioned by being fitted in the recess 3d provided in the axial direction (see FIG. 12), and a locking claw 2d provided at the opening end of the body 2 is provided at the opening edge of the cover 3. The body 2 and the cover 3 are coupled by being locked in the substantially rectangular locking hole 3i (see FIG. 12). At this time, the switch operating unit 32 is exposed forward by passing through the exposure window 3c of the cover 3 from the rear to the front.

  A waterproof sheet 6 made of synthetic rubber having a rectangular shape larger than the front surface of the switch storage chamber 4d is disposed on the front surface of the switch body 4b and the partition wall 4c that surround the four sides of each switch storage chamber 4d, and the switch body 4b and the partition wall 4c. And the ribs 3e projecting rearward from the opening periphery of the exposure window 3c. The waterproof sheet 6 is provided with an elongated insertion hole 6a having substantially the same shape as the exposure window 3c, and the switch operating portion 32 is inserted through the insertion hole 6a from the rear to the front. The insertion hole 6a is formed to be 0.2 to 0.3 mm smaller than the outer shape of the switch operation unit 32 so as to slightly overlap the outer shape of the switch operation unit 32 to be inserted. The peripheral edge portion 6b is in close contact with the outer surface of the switch operating portion 32 and is curved forward. Therefore, the waterproof sheet 6 can block the liquid such as water entering the outer shell 1 from the gap A between the switch operation unit 32 and the exposure window 3c, thereby preventing the liquid from entering through the gap A.

  In addition, a potting process for filling the resin 7 into the connection terminals 34a to 34c of the switch body 31, the periphery of the conductive plates 20b and 20c, the other end of the conductive plates 41 and 42, the gap between the inner cases 4a, and the like is performed. Intrusion of liquid into the inner case 4a and insulation deterioration between charged metal parts due to liquid that has penetrated into the outer shell 1 are prevented.

  Further, the outlet cover 5 is provided with a door portion (not shown) that is slidably moved in the direction along the front surface so as to freely open and close the plug blade insertion hole 11, and the door portion plugs the plug blade of the plug. When not inserted into the blade insertion hole 11, the plug blade insertion hole 11 is closed by being elastically biased by a coil spring or the like. When inserting the blade into the blade insertion hole 11, the door portion slides against the spring force by the pressing force of the blade and opens the blade insertion hole 11. Therefore, when the blade is not inserted, the plug blade insertion hole 11 is closed by the door to prevent liquid such as water from entering the outer shell 1 through the blade insertion hole 11.

  In the inner case 4a, the conductive plate 41 is electrically connected to the connection terminal 34a of the switch body 31, the connection terminal 34b is electrically connected to the conductive plate 20b, and the connection terminal 34b is connected via the conductive plate 20b. Are connected to one blade receiving spring 20a. The conductive plate 42 is electrically connected to the other blade receiving spring 20a via the conductive plate 20c and is also electrically connected to the connection terminal 34c.

  In this way, the switch 30 is provided corresponding to each outlet section 20, and each time the switch operating section 32 is swung, the contact portion of the switch body 31 opens and closes, and power is supplied from the external power source to each outlet section 20. Are individually turned on / off. Therefore, when an electrical device is connected to each outlet unit 20, the switch operating unit 32 of the corresponding switch 30 is swung to individually supply power to the electrical device regardless of the power switch of the electrical device. It can be turned on / off, and power can be saved by stopping power supply to the outlet unit 20 to which an electrical device that does not require power supply is connected. Further, the neon lamps of the corresponding switches 30 are connected in parallel with the respective outlet units 20, and when the power is supplied to the outlet units 20, the neon lamps of the corresponding switches 30 are turned on. The energized state of the unit 20 can be easily grasped.

  Here, in this embodiment, the switch operation unit 32 is formed of a transparent or translucent thermoplastic resin so that the lighting state of the neon lamp can be seen from the outside. This transparent resin is made of PC (polycarbonate) resin, styrene resin, or acrylic resin. Examples of the styrene resin include ABS resin (acrylonitrile butadiene styrene), AS resin (acrylonitrile styrene), PS resin (polystyrene), and the like. is there.

  In addition, since the waterproof sheet 6 is required to have flexibility, synthetic rubber is used. Depending on the material, a plasticizer is added to ensure flexibility. However, if the plasticizer is a phthalic acid additive, when the waterproof sheet 6 comes into contact with the PC resin, styrene resin, or acrylic resin, the resin tends to attack the resin, which may cause adhesion or cracking due to migration. is there. Therefore, when the switch operating portion 32 that is in direct contact with the waterproof sheet 6 is formed of PC resin, styrene resin, or acrylic resin, the plasticizer of the waterproof sheet 6 does not contain a phthalic acid-based additive. As the agent, one containing paraffinic, naphthenic, or aromatic process oil is used. For example, ethylene propylene rubber (EPM) or chloroprene rubber (CR) can be used as the waterproof sheet 6. In addition, each material of the said waterproof sheet 6 and the switch operation part 32 is applicable similarly not only in this embodiment but in the below-mentioned embodiment.

  In the present embodiment, one waterproof sheet 6 is provided for each exposed window 3c, and the same number of waterproof sheets 6 as the switches 30 are provided, and the table having the three outlets with switches shown in FIG. The same waterproof sheet 6 may be made to correspond to each exposed window 3c for the tap and the table tap provided with the two outlets with a switch shown in FIG. That is, the same waterproof sheet 6 can be used for a plurality of varieties having different numbers of switches 30, and it is possible to cope with a plurality of varieties while suppressing investment.

(Embodiment 2)
The table tap of the present embodiment is shown in FIGS. 6 to 8, and the waterproof sheet is different from that of the first embodiment. The same components are denoted by the same reference numerals, and description thereof is omitted.

  In an environment where the handle operation of the switch operation unit 32 is frequently performed, the waterproof sheet 6 made of synthetic rubber or the like is caught in the switch operation unit 32 as in the first embodiment, and the waterproof sheet 6 is lifted or torn. Adverse effects occur. Therefore, in this embodiment, a hard waterproof sheet 13 made of polypropylene (PP) or the like and a soft waterproof sheet 14 made of synthetic rubber or the like are used in an overlapping manner (see FIG. 8A), and the waterproof sheet 13 is used as the waterproof sheet 14. It forms harder. A rectangular waterproof sheet 13 that is larger than the front surface of the switch storage chamber 4d is placed on the front surfaces of the switch body 4b and the partition wall 4c that surround the four sides of each switch storage chamber 4d. The waterproof sheets 14 having substantially the same shape are placed on top of each other, and the waterproof sheets 13 and 14 are sandwiched between the front surfaces of the switch body 4b and the partition wall 4c and the ribs 3e protruding rearward from the opening periphery of the exposure window 3c. It is disguised.

  The waterproof sheets 13 and 14 are respectively provided with elongated insertion holes 13a and 14a having substantially the same shape as the exposure window 3c, and the switch operating portion 32 passes through the insertion holes 13a and 14b from the rear to the front. The insertion hole 13a of the waterproof sheet 13 is formed to be approximately the same size as the switch operation part 32 to be inserted, and the insertion hole 14a of the waterproof sheet 14 is formed to be slightly smaller than the switch operation part 32 to be inserted. The peripheral edge portion 14b enters the inner side of the peripheral edge portion 13b of the insertion hole 13a. Accordingly, the waterproof sheet 13 does not get caught or deformed by the switch operation part 32, and the opening end of the insertion hole 13a is in sliding contact with the outer periphery of the switch operation part 32, and the peripheral part 14b of the insertion hole 14a of the waterproof sheet 14 is the switch operation part. It sticks along the outer surface of 32 and curves forward (see FIG. 8B). As described above, the hard waterproof sheet 13 is used to prevent entrainment and deformation, and the soft waterproof sheet 14 is mainly used for waterproofing, and the waterproof performance is lost even in frequent handle operation of the switch operation unit 32. This prevents the liquid from entering through the gap A with both durability and waterproofness.

(Embodiment 3)
The table tap of the present embodiment is obtained by replacing the waterproof sheets 13 and 14 of the second embodiment with soft waterproof sheets 15 and 15, and FIG. 9 shows a schematic view around the switch operation unit 32 where the waterproof sheets 15 and 15 are in close contact. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 2, and description is abbreviate | omitted.

  In Embodiments 1 and 2, when the cover 3 is attached to the body 2, the end of the cover 3 is first aligned with the side wall 2 a of the body 2, and the cover 3 is attached to the body 2 from a state where the cover 3 is inclined with respect to the body 2. To cover. At the time of assembling, if one waterproof sheet 6 is used as in the first embodiment, the waterproof sheet 6 is dragged to the cover 3 to cause a positional shift, and a gap is generated between the switch operation unit 32 and the waterproof sheet 6 to waterproof. Performance may be degraded.

  Therefore, in the present embodiment, two waterproof sheets 15 having substantially the same flexibility and easy to adhere to each other are overlapped and protruded rearward from the front surfaces of the switch body 4b and the partition wall 4c and the opening periphery of the exposure window 3c. It is sandwiched between the ribs 3e. Oil such as silicon oil is applied to the surface of the waterproof sheet 15 for lubrication. As shown in FIG. 9, the peripheral edge 15 b of the insertion hole 15 a is in close contact with the outer surface of the switch operating part 32 and forward. Therefore, the oil 40 is also familiar with the surface of the switch operation unit 32, and repels moisture that tends to enter the inside. Further, the adhesion between the two waterproof sheets 15 and 15 is improved by the oil.

  Therefore, in a situation where the displacement of the waterproof sheet is likely to occur, such as when the body 2 and the cover 3 are assembled, only the waterproof sheet 15 on the cover 3 side of the two waterproof sheets 15 and 15 stacked. The waterproof sheet 15 on the body 2 side is not easily displaced and is kept in close contact with the switch operation unit 32, so that the waterproof performance is not lost.

  Further, instead of oil applied to the waterproof sheet 5, a fluororesin coating may be used, or even if silicon rubber is used for the waterproof sheet 5, no oil is required.

  The number of waterproof sheets 15 may be three as shown in FIG. 10, and in this case, two waterproof sheets 15, 15 on the body 2 side among the three waterproof sheets 15, 15, 15 overlapped. Although it is the same as the above that the positional deviation is less likely to occur, the middle waterproof sheet 15 is sandwiched between the two waterproof sheets 15 and 15 so that it is not affected by the assembly of the body 2 and the cover 3. It always moves following the switch operation part 32, the adhesion with the switch operation part 32 is further improved, and the waterproof performance is improved.

(Embodiment 4)
The table tap of the present embodiment is shown in FIG. 11, and the waterproof sheet is different from that of the first embodiment. The same components are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, one waterproof sheet 16 is used for a table tap having a four-port outlet, and the waterproof sheet 16 is formed in a long rectangular shape, and its longitudinal direction is the inner case. It is arranged on the front surface of the two switch bodies 4b along the longitudinal direction of 4a. The waterproof sheet 16 is provided with four elongated insertion holes 16a having substantially the same shape as the exposure window 3c at each position facing the four exposure windows 3c, and the four switch operation portions 32 are inserted into four. The holes 16a are respectively inserted from the rear to the front, and the insertion holes 16a are formed to be slightly smaller than the switch operation part 32 to be inserted, and the peripheral edge 16b of the insertion hole 16a is in close contact with the outer surface of the switch operation part 32. Curved forward. Therefore, the waterproof sheet 16 can block the liquid such as water entering from the gap A between the switch operation unit 32 and the exposure window 3c, thereby preventing the liquid from entering through the gap A. Furthermore, the single waterproof sheet 16 can correspond to the four exposed windows 3c, and the assemblability is good.

  Further, the waterproof sheet 16 is provided with two cross-shaped cuts 16c. The ribs 3h (see FIG. 12) standing on the rear surface of the cover 3 are inserted through the cuts 16c so that the waterproof sheet 16 is positioned. The

  For a plurality of products having different numbers of switches 30, a waterproof sheet 16 having a number of insertion holes 16a corresponding to each specification is used.

(Embodiment 5)
The table tap of the present embodiment is a waterproof sheet 17 shown in FIG. 13A as the waterproof sheet 6 of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. .

  The waterproof sheet 17 is made of a rectangular synthetic rubber or the like, and has an elongated insertion hole 17a having substantially the same shape as the exposure window 3c. And the wall part 17b along the periphery of the penetration hole 17a is protrudingly provided in the surface at the side of the cover 3 of the waterproof sheet 17 toward the exposure window 3c, and the opening surface of the penetration hole 17a is started from the front-end | tip part of the wall part 17b. A surface 17c parallel to the inner surface is integrally formed inward. Accordingly, as shown in FIGS. 13B and 15, the wall portion 17 b and the surface 17 c are brought into close contact with the outer surface of the switch operation portion 32, so that the position of the waterproof sheet 17 and the switch operation portion 32 during assembly and operation is increased. Misalignment is unlikely to occur, ensuring stable waterproof performance.

  Further, since the surface portion 17c is provided, the adhesiveness to the switch operation portion 32 is further increased and the strength is also increased. Therefore, deformation when the waterproof sheet 17 is molded can be prevented and molding becomes easy. That is, when the waterproof sheet 17 is thinly formed by molding, it is possible to prevent the wall portion 17b from being broken at the time of releasing from the mold, and stable molding becomes possible.

  14A, the thickness t1 of the waterproof sheet main body is 0.6 mm, the thickness t2 of the wall portion 17b is 0.4 mm, and the thickness t3 of the surface 17c is 0.5 mm. By making the thickness t2 of the portion 17b and the thickness t3 of the surface 17c smaller than the thickness t1 of the waterproof sheet main body, the durability and waterproofness similar to those of the second embodiment are ensured by the single waterproof sheet 17.

  Further, if oil is applied to the wall portion 17b and the surface 17c, it is possible to prevent the waterproof sheet 17 from being torn due to friction at the contact portion C between the wall portion 17b and the surface 17c and the switch operation portion 32 in FIG. .

  In the present embodiment, the waterproof sheet 17 is formed to have a different thickness depending on each part. However, as shown in FIG. 14B, the thickness of the waterproof sheet body, the thickness of the wall part 18b, and the thickness of the surface 18c are the same. Even if the waterproof sheet 18 molded to the thickness t4 is used, stable waterproof performance can be ensured as described above, and the strength of the waterproof sheet 18 can be ensured.

(Embodiment 6)
The table tap of this embodiment is a waterproof sheet 19 shown in FIG. 16 as the waterproof sheet 6 of the first embodiment. The same reference numerals are given to the same components as those of the first embodiment, and the description will be omitted.

  The waterproof sheet 19 is made of rectangular synthetic rubber or the like, and is provided with an elongated insertion hole 19a having substantially the same shape as the exposure window 3c. And the wall part 19b of the shape along the periphery of the penetration hole 19a protrudes from the surface at the side of the cover 3 of the waterproof sheet 19, and the surface of the waterproof sheet 19 abuts between the insertion hole 19a and the wall part 19b. It exists as a contact surface 19c.

  On the other hand, a rib 3k is provided on the back surface of the cover 3 along the periphery of the exposed window 3c. The outer surface of the rib 3k is fitted to the inner surface of the wall portion 19b of the waterproof sheet 19, and the end surface of the rib 3k is contacted. By contacting the contact surface 19c, the waterproof sheet 19 is temporarily fixed to the cover 3 at the time of assembly, and positioning is easy. Further, in the production process, the waterproof sheet 19 can be prepared by temporarily fixing the cover 19 to the cover 3 in advance before the assembly, so that the production efficiency is improved.

(Embodiment 7)
The table tap of this embodiment is a waterproof sheet 25 shown in FIG. 17 as the waterproof sheet 6 of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The waterproof sheet 25 is made of synthetic rubber or the like, and includes a flange portion 25a sandwiched between the front surfaces of the switch body 4b and the partition wall 4c and a rib 3e protruding rearward from the opening periphery of the exposure window 3c, A cover portion 25b that is integrally formed along the outer shape of the switch operation portion 32 from the portion 25a to the exposure window 3c side and covers the switch operation portion 32. Therefore, the waterproof sheet 25 covers the exposed switch operation unit 32, and the deterioration of the waterproof performance due to the positional deviation during assembly can be reduced.

  Further, since the wall portion 25c is provided on the periphery of the covering portion 25b as in the sixth embodiment, the waterproof sheet 25 can be temporarily fixed to the cover 3 during assembly, positioning becomes easy, and production efficiency is improved. To do.

(Embodiment 8)
The table tap of the present embodiment is shown in FIGS. 18 to 20, and the shape of the switch body is different from that of the first embodiment. The same components are denoted by the same reference numerals and description thereof is omitted.

  Two switch bodies 4i are integrally formed along the longitudinal direction at the front part of the inner case 4a of the present embodiment, and each switch body 4i has two elongated openings 4j on the front side of a rectangular box. Opening in a line along the direction, each switch body 4i is provided with a contact to form two switch bodies 31, and the switch operating part 32 is inserted through the opening 4j from the rear to the front. Exposed to

  The opening 4j is formed in an elongated shape along the outer peripheral surface of the switch operation unit 32, and is generated when the contact of the switch body 31 is opened and closed by reducing a gap generated between the switch operation unit 32 and the opening 4j. The arc is difficult to see.

  Furthermore, the end surface B (broken line in FIG. 20) of the rib 3e provided on the rear surface side periphery of the exposure window 3c of the cover 3 and the periphery of the opening 4j have substantially the same shape, and the waterproof sheet 6 (in FIG. 20) by the rib 3e. The two-dot chain line) is further ensured.

  Further, in FIG. 19, a hole 4m for inserting the blade receiving spring 20a is formed on one side of the inner case 4a in the short width direction.

It is a disassembled perspective view which shows the table tap of Embodiment 1 of this invention. The outlet module same as the above is shown, (a) is a side view, (b) is a rear view, (c) is a front view, and (d) is an end view. It is side surface sectional drawing which shows a table tap same as the above. It is a disassembled perspective view which shows the table tap from which the number of outlets same as the above is different. It is a disassembled perspective view which shows the table tap from which the number of outlets same as the above is different. It is a disassembled perspective view which shows the table tap of Embodiment 2 of this invention. It is side surface sectional drawing which shows a table tap same as the above. The waterproof sheet is shown, wherein (a) is a plan view and (b) is a partially enlarged view when mounted. It is this schematic which shows the switch operation part periphery which the waterproof sheet of Embodiment 3 of this invention closely_contact | adhered. It is a perspective view which shows another structure of the waterproof sheet same as the above. It is a disassembled perspective view which shows the table tap of Embodiment 4 of this invention. It is the perspective view which looked at the cover same as the above from the rear. The waterproof sheet of Embodiment 5 of this invention is shown, (a) is a perspective view, (b) is a partially enlarged view at the time of mounting | wearing. Side surface sectional drawing of a waterproof sheet same as the above is shown, (a) is the structure from which the thickness of each part differs, (b) is the structure by which the thickness of each part was made the same. It is side surface sectional drawing which shows a table tap same as the above. It is a disassembled perspective view which shows the combination of the waterproof sheet and cover of Embodiment 6 of this invention. It is a perspective view which shows the waterproof sheet of Embodiment 7 of this invention. It is a disassembled perspective view which shows the table tap of Embodiment 8 of this invention. It is a perspective view which shows an inner case same as the above. It is an enlarged view of a switch periphery. It is a disassembled perspective view which shows the conventional table tap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer 2 Body 3 Cover 3c Exposed window 4 Outlet module 5 Outlet cover 6 Waterproof sheet 11 Plug blade insertion hole 20 Outlet part 20a Blade receiving spring 30 Switch 31 Switch body 32 Switch operation part

Claims (19)

A plurality of outlet portions each having a plug blade insertion hole into which a plug blade of the plug is inserted, a blade receiving spring for receiving a plug blade inserted into the plug blade from the plug blade insertion hole, and power supply to each of the outlet portions from an external power source A plurality of switches comprising a switch body for individually turning on / off and a switch operation section for performing the on / off operation, and a plurality of switches for housing the outlet section and the switch body and exposing the switch operation sections to the outside. A table tap comprising: an outer shell having an opening; and a sheet is disposed between the switch body and an opening peripheral edge of the outer shell. The table tap according to claim 1, wherein a plurality of the sheets are provided for each opening edge of the outer shell. The table tap according to claim 1 or 2, wherein a first sheet and a second sheet having substantially the same flexibility are arranged in an overlapping manner between the switch body and an opening peripheral edge of the outer shell. . The first sheet, the second sheet, and the third sheet having substantially the same flexibility are arranged in an overlapping manner between the switch body and the opening periphery of the outer shell. Table tap according to 2. The table tap according to claim 1 or 2, wherein the sheet is thinly formed near an opening of the outer shell. The sheet is formed with an insertion hole for allowing the switch operating portion to pass therethrough, and a wall portion along the periphery of the insertion hole is provided to project toward the opening of the outer shell. 5. A table tap according to any one of the above. The table tap according to claim 6, wherein a surface substantially parallel to the opening surface of the insertion hole is provided from the tip of the wall portion. The said sheet | seat consists of a thin synthetic rubber sheet | seat which has flexibility, The insertion hole formed in the said sheet | seat in order to insert the said switch operation part is smaller than the external shape of the said switch operation part, The 1 thru | or characterized by the above-mentioned. 7. A table tap according to any one of the above. The table tap according to claim 1, wherein a surface of the sheet has water repellency. The switch operation unit includes an energization display means for the outlet unit, and the switch operation unit is a transparent or translucent thermoplastic resin made of PC resin, AS resin, ABS resin, PS resin, or acrylic resin. The table tap according to claim 1, wherein the table tap is formed. The table tap according to claim 10, wherein the sheet is made of synthetic rubber not containing a phthalic acid additive as a plasticizer. The table tap according to claim 11, wherein the sheet uses paraffinic, naphthenic, or aromatic process oil as a plasticizer. The table tap according to claim 11, wherein the sheet is made of ethylene propylene rubber or chloroprene rubber. Between the switch body and the opening periphery of the outer shell, the first sheet disposed on the opening periphery side and the second sheet disposed on the switch body side and harder than the first sheet are stacked. The table tap according to claim 1, wherein the table tap is arranged. 2. The table tap according to claim 1, wherein the sheet is formed as a single sheet disposed between all the switch bodies and all the opening rims of the outer shell. A rib is provided on the inner surface of the outer shell along the periphery of each opening, and a convex portion that fits the rib is provided on the surface of the sheet facing the rib. Table tap according to 2. The seat includes a flange portion sandwiched between the switch body and the opening periphery of the outer shell, and a covering portion that is integrally formed on the opening side from the flange portion and covers the switch operation portion. The table tap according to claim 1 or 2, wherein The table tap according to any one of claims 1 to 17, wherein the switch body is formed with a mounting hole for mounting the switch operation portion along an outer surface of the switch operation portion. 2. The table tap according to claim 1, wherein the metal portion electrically connected to the blade receiving spring is potted with resin.

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