JP2005327632A - Table tap system, extension unit constituting this, and main body unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily increase and decrease the number of receptacles, protect connection points made by increase of the number against dust and moisture, and yet limit the increase of the number of the receptacles. <P>SOLUTION: A cord unit 1, a main body unit 3 having a plurality of receptacles, and an extension unit 2 having a plurality of receptacles are provided. The main body unit 3 is provided with a main body power source input part 3A connected to the cord unit 1 and having a structure of sealing a connection part with the cord unit, and a main body power source output part 3B having a structure of inhibiting mutual connection with the main body power source input part 3A and connected with the extension unit 2, and at the same time, the extension unit 2 is provided with an extension power source input part 2A connected with the main body power source output part 3B of the main body unit 3. Further, the main body power source input part 3B and the extension power source input part 2A have a structure of sealing these connection points. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a table tap system constituted by a cord unit, a main unit having a plurality of outlets, and an extension unit having a plurality of outlets, and an extension unit and a main unit constituting the table tap system.

  FIG. 8 is a perspective view (a) and an exploded perspective view (b) of a conventional table tap. The conventional table tap shown in this figure includes a pair of plug terminal (plug blade) bent (snap) type power plug 11, a so-called better table tap 4 having a plurality of (three in the figure) outlets, and these. The power cord 13 is electrically connected.

  FIG. 9 is a perspective view in which a so-called triangular tap is added to the table tap of FIG. As shown in this figure, the number of outlets can be increased by connecting the triangular tap 5 to one outlet of the better table tap 4.

  FIG. 10 is a diagram showing a connected table tap. Since the conventional table tap 6 shown in this figure has a male and female harness structure, each table tap 6 can be connected in a desired number.

Patent Documents 1 and 2 disclose a harness plug, a harness connector, a zone pull box, a power cable, and the like that are used for the construction of a power supply preceding wiring.
JP-A-5-29026 JP-A-5-29027

  In the conventional table tap shown in FIG. 8, as shown in FIG. 9, the number of outlets can be easily increased by using various taps such as a triangular tap or a so-called triple tap having three outlets. Can do. Similarly, if the connection type table tap shown in FIG. 9 is used, the number of units can be increased by a predetermined factor.

  However, the conventional table taps shown in FIGS. 8 to 9 have a problem that the increase in the number of outlets cannot be limited.

  In addition, in the structure which increases the number of units by the tap as shown in FIG. 9, there is a problem that the appearance is very bad. Further, in the conventional table tap shown in FIG. 8, when the length of the power cord 13 is changed, the power cord 13 is removed from the power plug 11 and the better table tap 4 as shown in FIG. Since it is necessary to reconnect the power cord 13 having a length to the power plug 11 and the better table tap 4, a table having a desired length as shown in FIG. There is also the problem of having to buy a new tap. Further, if the table tap shown in FIG. 8 is of an integrated type, there is no choice but to replace it with a desired length.

  The present invention has been made in view of the above circumstances, and the number of outlets can be easily increased or decreased, and the dust and waterproofing of the connection part caused by the increase in the number of outlets and the like is possible, and the increase in the number of outlets is limited. It is an object of the present invention to provide a table tap system that can be used, an extension unit that constitutes the table tap system, and a main unit.

  The invention according to claim 1 for solving the above problem is a table tap system including a cord unit, a main unit having a plurality of outlets, and an extension unit having a plurality of outlets, The main unit is connected to the cord unit and has a structure for sealing the connecting portion with the cord unit and the main unit power input unit, and the main unit input unit is connected to the extension unit. The extension unit includes an extension power input unit connected to the main unit power output unit of the main unit, and the main unit power output unit and the additional power input unit connect these It is characterized by a structure that seals the part.

  In this configuration, the number of outlets can be easily increased by attaching an extension unit to the main unit, and the number can be easily reduced by removing the extension unit from the main unit. In addition, these connection parts are sealed when the main unit power output unit and extension power input unit are connected, and these connection units are sealed when the main unit power input unit and cord unit are connected. The part can be protected against dust and water. In addition, since the main unit power output unit prohibits interconnection with the main unit power input unit, even if the user owns multiple main unit, the main unit power input unit and the main unit power output unit Since it is not possible to connect a plurality of main body units, it is possible to limit the increase in the number of outlets.

  According to a second aspect of the present invention, in the table tap system according to the first aspect, the power supply unit includes only the cord unit, the extension unit, and the main body unit, and the cord unit projects and holds a plurality of plug terminals. A plug, a connection outlet having a plurality of terminal insertion holes and storing a plurality of terminal receiving portions directly below the plurality of terminal insertion holes, and a plurality of plug terminals of the power plug connected to the power plug and the connection outlet And a plurality of terminal cords of the connection outlet to electrically connect each of the power cords, the extension unit is formed in a hollow polyhedron shape, the extension power input portion is configured on one surface, On the other side, multiple terminal insertion holes for inserting multiple plug terminals of the power plug from the external device are inserted. A plurality of plug-type connection terminals provided in the additional power supply input section and projectingly held, and a plurality of sets of terminals inserted in a plurality of sets on the other side. A plurality of sets of terminal receiving portions respectively provided immediately below the holes and the plurality of plug-type connection terminals and the plurality of sets of terminal receiving portions are electrically connected to each polarity by being housed in the expansion side body. The main body unit is formed in a hollow polyhedron shape, the main body power input section is configured on one surface, and the main body power output section on the other surface, It is structured to have a plurality of terminal insertion holes for inserting a plurality of plug type connection terminals of the additional power supply input section, and a plurality of plug terminals of a power plug from an external device are provided on the other surface. A main body side container having a plurality of terminal insertion holes for insertion, and provided in the main body power supply input portion and held in a projecting manner, and electrically connected to and separated from the plurality of terminal receiving portions of the connection outlet. A plurality of plug-type connection terminals that are freely connected, and a plurality of terminals that are provided in the main body power supply output unit and housed in the main body side container, and are respectively provided directly below the plurality of terminal insertion holes of the main body power supply output unit A receiving portion, and a plurality of sets of terminal receiving portions respectively provided immediately below the plurality of terminal insertion holes of the plurality of sets on the other surface, and stored in the main body side device; A plurality of plug-type connection terminals of the main body power input section, a plurality of terminal receiving sections of the main body power output section, and a plurality of sets of terminal receiving sections immediately below the plurality of sets of terminal insertion holes on the other surface. , That A plurality of conductive portions that are electrically connected to each polarity, and the main body side body portion constituting the main body power input portion is connected to the plurality of plug-type connection terminals of the main body power input portion. When the plurality of terminal receiving portions of the outlet are electrically connected to each other, they are formed in a shape that seals these connection portions, while the main body side body portion that constitutes the main body power supply output portion In addition, the portion of the additional side body constituting the additional power input portion is electrically connected to a plurality of terminal receiving portions of the main body power output portion and a plurality of plug type connection terminals of the additional power input portion. It is characterized by being formed in the shape which seals these connection parts. In this configuration, when the main unit power input unit and the connection outlet are electrically connected, these connection parts are sealed by the main unit side unit constituting the main unit power input unit, and the main unit power output unit and the additional power source When these are electrically connected to the input unit, these connection parts are sealed by the main unit side instrument part constituting the main unit power output part and the additional side instrument part constituting the additional power source input part. The part can be protected against dust and water. In addition, since only the cord unit, the extension unit, and the main unit are provided, the increase in the number of outlets can be more suitably limited.

  According to a third aspect of the present invention, in the table tap system according to the first or second aspect, the additional side body is formed in a hollow rectangular shape having one direction as a longitudinal direction, and both wide side surfaces on each side surface. A plurality of sets of terminal insertion holes on one side surface, and the main body side body is formed in a hollow rectangular shape having one direction as a longitudinal direction, and both wide side surfaces on each side surface A plurality of terminal insertion holes of the plurality of sets on one side surface, and the main body power input portion of the main body side device includes one end surface of both end surfaces of the main body side device body, and A cylindrical portion that extends from the outer peripheral edge to be flush with each side surface of the main body side container, and has a pair of cutouts at portions extending from the wide side surfaces of the main body side container. The main body power input section on the one end face in the cylindrical section. A plurality of plug-type connection terminals are protruded and held, and when the plurality of plug-type connection terminals are electrically connected to a plurality of terminal receiving portions of the connection outlet, respectively, by the cylindrical portion of the main body power input portion. The connection part with the connection outlet is fitted and sealed, and the both sides of the connection outlet are sandwiched and the mechanical connection with the connection outlet is strengthened. The other end face of the side body and the remaining part excluding the outer peripheral edge of the end face are bulged, the bulge face has a plurality of terminal insertion holes for the main body power output section, and the cylindrical section of the main body power input section. The additional power input portion of the additional side unit is connected to the additional side from one end surface of the both end surfaces of the additional side unit and the outer periphery of the end surface. Be flush with each side of the vessel A plurality of plug-type connection terminals of the additional power supply input part projecting and holding on the one end face in the cylindrical part, When the plurality of terminal receiving portions of the main body power output section and the plurality of plug-type connection terminals of the additional power input section are electrically connected to each other, these connecting portions are connected to the expansion of the main body power output section. It is characterized in that it is hermetically sealed by fitting the protruding portion and the cylindrical portion of the additional power supply input portion and the mechanical connection is strengthened. In this configuration, when the main unit power input unit and the connection outlet are electrically connected, the main unit power input unit of the main unit side of the main unit side fits and seals the connection portion with the connection outlet and holds both sides of the connection outlet. Since the mechanical connection with it is strengthened, the connection part can be protected against dust and water, and the stress applied to each plug-type connection terminal of the main unit power input can be reduced to stabilize the connection. be able to. In addition, when the main body power output section and the additional power input section are electrically connected, these connection portions are sealed by fitting the bulging portion and the cylindrical portion, and the mechanical connection is strengthened. In addition to being able to be protected against dust and water, the stress applied to each plug-type connection terminal of the additional power supply input section can be reduced, and the connection can be stabilized.

  According to a fourth aspect of the present invention, in the table tap system according to any one of the first to third aspects, each of the cord unit, the extension unit, and the main body unit is for two electrodes, a voltage electrode and a neutral electrode. Each of the additional power supply input section and the main body power supply output section is provided with a reverse connection prevention means. With this configuration, it is possible to prevent the extension power input unit and the main unit power output unit from being reversely connected.

  According to a fifth aspect of the present invention, in the table tap system according to any one of the first to fourth aspects, at least the connection outlet of the connection outlet and the main body power input section is connected to the connection outlet and the main body power input section. It is characterized by comprising connection state recognition means for indicating whether or not the state is normal. In this configuration, it is possible to know whether or not the connection state of the connection outlet and the main body power input unit is normal.

  A sixth aspect of the present invention is the table tap system according to any of the third to fifth aspects, wherein the connection outlet is located at a position corresponding to a pair of notches in the main body power input portion of the main body side body. A pair of anti-slip parts, the extension unit has anti-slip parts on both sides of the side of the additional side instrument body, and the main unit is provided on each side of the main body side instrument body. It has a non-slip portion on both side surfaces of the narrow width. In this configuration, the connection outlet and the main unit can be easily attached and detached, and the extension unit and the main unit can be easily attached and detached.

  The invention according to claim 7 is the table tap system according to any one of claims 3 to 6, wherein each of the cord unit, the extension unit, and the main body unit is for two poles of a voltage pole and a neutral pole. The plurality of plug-type connection terminals have the same shape as the plurality of plug terminals of the power plug of the cord unit, and the cylindrical portion of the additional power input section is the wide side of the additional side instrument body. A portion that is flush with the other side surface is a cover that is detachably attached to the cylindrical portion, and the additional power input portion is connected to the base end side of the plurality of plug-type connection terminals. A holding mechanism is provided for holding the front end side of the cover to the cover side so as to be bendable. In this configuration, remove the cover and bend the tip of the multiple plug-type connection terminals of the additional power supply input section to the original position of the cover so that the multiple plug-type connection terminals are connected to a wall outlet. can do.

  The invention according to claim 8 is the table tap system according to any one of claims 1 to 7, wherein the cord unit is provided with various types of power cords having different lengths, and each of the extension unit and the main unit is provided. An on / off switch for turning on / off the power of at least one outlet among the outlets constituted by the plurality of terminal insertion holes of each set on the other surface and the plurality of terminal receiving portions directly below these It is characterized by having at least two types of what has at least one and what does not have. In this configuration, the number of outlets can be easily increased or decreased, and the length of the power cord of the table tap system can be easily changed by simply replacing the cord unit with a desired length. It can be easily changed to an outlet with or without an on / off switch simply by replacing it with an extension unit without or without an on / off switch.

  The invention according to claim 9 is an extension unit that constitutes the table tap system according to any one of claims 1 to 8. By using this extension unit in the table tap system, the number of outlets can be easily increased or decreased, and the increase in the number of outlets can be limited.

  A tenth aspect of the present invention is a main body unit that constitutes the table tap system according to any one of the first to eighth aspects. By using this main unit in a table tap system, the number of outlets can be easily increased or decreased, and the increase in the number of outlets can be limited.

  According to the present invention, it is possible to easily increase or decrease the number of outlets, and in addition to the connection portion generated by the increase in the number of ports, that is, the connection portion between the main body power output portion and the additional power input portion, the main body power input portion and the cord Dustproofing and waterproofing of the connecting part with the unit is possible, and the increase in the number of outlets can be limited.

(Embodiment 1)
FIG. 1 is a perspective view showing a state in which each unit of the table tap system of Embodiment 1 according to the present invention is separated.

  The table tap system of the first embodiment is for a voltage pole and a neutral pole. For example, the table tap system is connected to a wall outlet and connected to various external devices that require AC power. Thus, the AC power from the wall outlet is supplied to various external devices, and as shown in FIG. 1, only the cord unit 1, the extension unit 2, and the main unit 3 are provided.

  The cord unit 1 has a plurality of plug terminals (plug blades 111 in the figure) 111 and 111 connected to a wall outlet and the like, and a plurality of terminal insertion holes and immediately below the plurality of terminal insertion holes. A rectangular parallelepiped connection receptacle 12 that houses a plurality of terminal receptacles, and the power plug 11 and the connection receptacle 12 are connected to each other. The plurality of plug terminals 111 and 111 of the power plug 11 and the plurality of terminal receptacles of the connection receptacle 12 are connected. And a power cord 13 that is electrically connected to each other.

  The expansion unit 2 is a tap for expansion, and the expansion side body 20 made of an insulating resin is formed by a half polyhedral shape by the halves 21 and 22 into a hollow rectangular shape having one direction as a longitudinal direction in the figure. It has.

  In this extension side body 20, the extension power input section 2A is formed on one surface (the lower right surface in a cylindrical portion 200 to be described later in the figure), and both wide sides on each side included in the other surfaces. A plurality of terminal insertion holes for inserting a plurality of plug terminals of a power plug from an external device into one of the surfaces (the front portion 210 of the half 21 which is the front portion of the extension unit 2 in the figure). In the figure, there are a plurality of sets (two sets in the figure) of plug blade insertion holes) 210a and 210b.

  The extension power supply input unit 2A has one end face (the above-mentioned one face of the extension side instrument body 20) of both end faces of the extension side instrument body 20, and each side surface and surface of the extension side instrument body 20 from the outer peripheral edge of this end face. It is configured by a cylindrical portion 200 that extends as a unit and is fitted to a later-described bulging portion 301. On the other hand, the terminal insertion holes 210a and 210b are respectively an insertion hole for a voltage electrode and a wider insertion hole for a neutral electrode.

  Further, the extension unit 2 includes a plurality of plug-type connection terminals 23 and 23 that are provided in the extension power supply input unit 2A and are held protruding. The plurality of plug-type connection terminals 23, 23 are plug blades having the same shape as the plurality of plug terminals 111, 111 of the power plug 11 of the cord unit 1, and are provided in the cylindrical portion 200 of the additional power input portion 2A. It protrudes and is hold | maintained at the said one end surface.

  Further, the extension unit 2 is housed in the extension side body 20 and is provided with a plurality of sets of terminal receivers (not shown) provided immediately below the plurality of sets of terminal insertion holes 210a, 210a, 210b, 210b in the front portion 210. A plurality of conductive portions (blade receiving springs) and a plurality of plug-type connection terminals 23 and 23 and a plurality of sets of terminal receiving portions that are electrically connected according to polarity, respectively. (Not shown). That is, each terminal receiving portion directly below each terminal insertion hole 210a and one (left in the figure) plug-type connection terminal 23 are electrically connected by one conductive portion. Similarly, each terminal receiving portion directly below each terminal insertion hole 210b and the other plug-type connection terminal 23 are electrically connected by the other conductive portion. Note that the terminal receiving portions, the conductive portions, and the plug-type connection terminals 23 that are electrically connected to each other are configured separately and may be configured integrally.

  The main unit 3 is a main tap, and has a main body 30 made of insulating resin formed into a hollow polyhedron shape by a half 31 and 32, a hollow flat shape having one direction as a longitudinal direction in the figure. I have.

  The main body side body 30 has a plurality of terminal insertion holes (hidden in the figure) for inserting the main body power input section 3A and the plurality of plug-type connection terminals 23, 23 of the additional power input section 2A, respectively. The main body power output unit 3B is configured as one surface (a lower right surface) and another surface facing it. And the main body side body 30 is connected to one side surface (front part 310 of the half 31 used as the front part of the main body unit 3) from an external apparatus among the wide both side surfaces in each side surface included in other surfaces. A plurality of terminal insertion holes (plug blade insertion holes) 310a and 310b for inserting a plurality of plug terminals of the power plug are provided.

  The main body power input unit 3A has one end surface (the one surface of the main body side body 30) of both end surfaces of the main body side body 30, and each side surface and surface of the main body side body 30 from the outer peripheral edge of the end surface. It is formed in a cylindrical shape that extends as a single unit, has an opening 300a that fits into the connection outlet 12, and a pair of U-shaped cuts at the portions that extend from the wide side surfaces of the main body side body 30. It is comprised by the cylindrical part 300 which has the notches 300b and 300c.

  The main body power output unit 3B bulges on the other end surface of the main body side body 30 and the remaining portion excluding the outer peripheral edge of the end surface, and has a plurality of terminal insertion holes of the main body power output unit 3B on the bulging surface. The bulging portion 301 is larger than the cylindrical portion 300 of the power input portion 3A. The terminal insertion holes 310a and 310b are respectively a voltage electrode insertion hole and a wider neutral electrode insertion hole.

  Further, the main unit 3 is provided in the main body power input portion 3A, is protruded and held, and is connected to a plurality of terminal receiving portions of the connection outlet 12 so as to be electrically connected to and separated from each other. In the figure, the left side 33 is hidden), and is provided in the main body power supply output section 3B and stored on the bulging section 301 side of the main body side container 30, and immediately below the plurality of terminal insertion holes of the main body power supply output section 3B. A plurality of terminal receiving portions (blade receiving springs) (not shown) provided respectively. The plurality of plug-type connection terminals 33 and 33 are plug blades having the same shape as the plurality of plug terminals 111 and 111 of the power plug 11 of the cord unit 1.

  Further, the main unit 3 is housed in the main body side body 30 and is provided with a plurality of sets of terminal receivers (not shown) provided immediately below the plurality of sets of terminal insertion holes 310a, 310a, 310b, 310b of the front portion 310. Portion (blade receiving spring) and a plurality of plug-type connection terminals 33, 33, a plurality of terminal receiving portions of the main body power output portion 3B, and a plurality of sets of a plurality of sets of the front portion 310. A plurality of sets of terminal receiving portions directly under the terminal insertion holes are provided with a plurality of conductive portions that are electrically connected by polarity. That is, one (left) plug-type connection terminal 33, one terminal receiving portion of the main body power supply output portion 3B, and each terminal receiving portion immediately below each terminal insertion hole 310a are electrically connected by one conductive portion. Similarly, the other plug-type connection terminal 33, the other terminal receiving portion of the main body power output portion 3B, and each terminal receiving portion immediately below each terminal insertion hole 310b are electrically connected by the other conductive portion. Note that the plug-type connection terminal 33, the terminal receiving portion of the main body power output unit 3B, and the terminal receiving portions that are electrically connected to each other are configured separately and may be configured integrally.

  Here, as a feature of the first embodiment, the main body power output unit 3B is configured to prohibit mutual connection with the main body power input unit 3A. That is, the bulging part 301 of the main body power output part 3B is larger in size than the cylindrical part 300 of the main body power input part 3A.

  In addition, the main body side body 30 constituting the main body power input portion 3A is electrically connected to the plurality of plug-type connection terminals 33, 33 of the main body power input portion 3A and the plurality of terminal receiving portions of the connection outlet 12. Seal these connections when connected. That is, the main body power input unit 3A of the main body side body 30 is fitted and sealed at the connection portion with the connection outlet 12 by the cylindrical portion 300 and is held between both sides of the connection outlet 12 with the connection outlet 12. Strengthen mechanical connection.

  Further, the main body side body 30 constituting the main body power output section 3B and the additional side body 20 constituting the additional power input section 2A are connected to a plurality of terminal receiving sections of the main body power output section 3B and the additional power input. When the plurality of plug-type connection terminals 23 and 23 of the part 2A are electrically connected to each other, these connection parts are sealed. That is, these connecting portions are sealed by fitting the bulging portion 301 and the tubular portion 200 and the mechanical connection is strengthened.

  As described above, according to the first embodiment, by attaching the extension unit 2 to the main unit 3, the number of outlets configured by a set of terminal insertion holes and terminal receiving portions can be easily increased. By removing the extension unit 2 from the main unit 3, the number of units can be easily reduced. In addition, when the main body power output unit 3B and the additional power input unit 2A are electrically connected, these connection parts are the bulging portion 301 of the main body side body 30 constituting the main body power output unit 3B and the additional power input unit 2A. Are sealed by the cylindrical portion 200 of the additional side body 20 and when the main body power input portion 3A and the connection outlet 12 are electrically connected, these connection portions constitute the main body power input portion 3A. Since it is sealed by the cylindrical portion 300 of the side body 30, it becomes possible to prevent dust and water at those connected portions. In addition, in the first embodiment, the main body power output section 3B prohibits the interconnection with the main body power input section 3A. In the first embodiment, the bulging portion 301 of the main body power output section 3B is more than the cylindrical section 300 of the main body power input section 3A. Therefore, even if the user owns a plurality of main body units 3, a plurality of main body units 3 including the main body power input unit 3A and the main body power output unit 3B cannot be connected. The increase in the number of outlets can be limited. Moreover, since only the cord unit, the extension unit, and the main unit are provided, the increase in the number of outlets can be more suitably limited.

  Furthermore, at the time of electrical connection between the main body power input portion 3A and the connection outlet 12, the main body power input portion 3A of the main body side body 30 fits and seals the connection portion with the connection outlet 12, and both sides of the connection outlet 12 are connected. Since the mechanical connection with the pin is held tightly, the connection portion can be protected against dust and waterproof, and stress applied to the plug-type connection terminals 33 and 33 of the main body power input portion 3A can be reduced. It is possible to stabilize the connection. Further, when the main body power output unit 3B and the additional power source input unit 2A are electrically connected, these connection parts are sealed by fitting the bulging part 301 and the cylindrical part 200 and the mechanical connection is strengthened. In addition to enabling dustproofing and waterproofing of the connection portion, the stress applied to each plug-type connection terminal 23, 23 of the additional power input portion 2A can be reduced, and the connection can be stabilized.

(Embodiment 2)
2A is a front view of a table tap system according to a second embodiment of the present invention, FIG. 2B is a view showing one end face side of the extension unit, FIG. 2C is a view showing the other end face side of the main unit, and the cord unit. It is a figure (d) which shows a part of.

  In the table tap system of the second embodiment, as shown in FIG. 2, the first embodiment is that the extension power input unit 2A and the main unit power output unit 3B are provided with reverse connection preventing means in the first embodiment. It is characterized by.

  As the reverse connection preventing means, the projection 200a is provided on the half 22 side of the inner surface of the cylindrical portion 200 of the additional power supply input portion 2A, while the concave groove 301a fitted to the projection 200a is provided as a main body power supply. It is formed on the half 32 side on the outer peripheral surface of the bulging portion 301 of the output portion 3B. However, the present invention is not limited to this, and the projection 200a and the concave groove 301a may be provided on the half 21 and half 31 side, respectively, or the projection and the concave groove may be provided on the bulging portion 301 and the cylindrical portion 200, respectively. .

  Further, the table tap system of the second embodiment indicates whether at least the connection outlet 12 of the connection outlet 12 and the main body power input unit 3A has a normal connection state of the connection outlet 12 and the main body power input unit 3A. A second feature is that a connection state recognition unit is provided.

  As the connection state recognition means, when the connection state of the connection outlet 12 and the main body power input unit 3A is not normal on one side of the connection outlet 12 at the position corresponding to the pair of notches 300b and 300c. The display 12a such as a desired red color is attached to the voids in the notches 300b and 300c, while the other side of the connection outlet 12 and the cylindrical portion 300 of the main body power input part 3A are connected to the connection outlet 12 and the main body. Protrusions 12 and 12 and recesses (not shown) are formed to fit with each other when the connection state of the power input unit 3A is normal. In addition, the structure provided in the other side of the cylindrical part 300 and the other side of the connection outlet 12 may be sufficient as these protrusion and a hollow, respectively. Further, the display 12 a may be configured to be attached to either one of the both sides of the connection outlet 12.

  As described above, according to the second embodiment, the extension power input unit 2A and the main unit power output unit 3B can be prevented from being reversely connected by the reverse connection preventing means. Further, the connection state recognition means can know whether or not the connection state of the connection outlet 12 and the main body power input unit 3A is normal.

(Embodiment 3)
FIG. 3 is a front view (a) and a cross-sectional view (b) of the cord unit and the main unit in the table tap system according to the third embodiment of the present invention.

  In the table tap system of the third embodiment, in the first or second embodiment, as shown in FIG. 2, the connection outlet 12 corresponds to the pair of notches 300b and 300c of the main body power input part 3A of the main body side body 30. A pair of anti-slip portions 12c and 12c having a plurality of steps are respectively provided at positions where the extension unit 2 is slightly extended along the longitudinal direction on the narrow side surfaces 205 and 206 on each side of the extension side body 20. (See FIG. 2A), the main unit 3 extends along the longitudinal direction on the narrow side surfaces 305 and 306 on each side surface of the main body side body 30. It is characterized by having anti-slip portions 305a and 306a having slight undulations. Further, the anti-slip portions 12c, 12c have an inclined structure in which the thickness is reduced as the bulge portion 301 side of the main unit 3 is closer.

  As described above, according to the third embodiment, the connection outlet 12 and the main unit 3 can be easily attached and detached, and the extension unit 2 and the main unit 3 can be easily attached and detached.

(Embodiment 4)
FIG. 4 is a front view (a), a side view (b), a rear view (c) and a view (d) showing the cover of the extension unit in the table tap system of Embodiment 4 according to the present invention, and FIG. FIG. 6A is a partially enlarged perspective view of FIG. 6A, and FIG. 6A is a view showing the holding mechanism of the additional unit, and FIG.

  As shown in FIG. 4, in the table tap system according to the fourth embodiment, as shown in FIG. 4, the cylindrical portion 200 of the additional power supply input unit 2 </ b> A is provided on both wide side surfaces of the additional side body 20. Of these, the portion that is flush with the other side surface (the back surface portion 220 of the half 22 serving as the back surface portion of the extension unit 2) is a cover 200b that is detachably attached to the cylindrical portion 200. As shown, the additional power supply input section 2A holds the base ends 230, 230 of the plurality of plug-type connection terminals 23, 23, and the distal ends 231, 231 of the plug-type connection terminals 23, 23 flexibly on the cover 200b. A holding mechanism (rotating mechanism using a disc spring) 20A is provided. Reference numeral 200A denotes a shaft that pivotally supports the base ends 230, 230 of the plurality of plug-type connection terminals 23, 23, and 200B electrically connects the plug-type connection terminals 23 to corresponding conductive portions in the extension unit 2. It is the cord for connecting to.

  As described above, according to the fourth embodiment, by removing the cover 200b and bending the distal ends 231 and 231 of the plurality of plug-type connection terminals 23 and 23 of the additional power input part 2A to the original position of the cover 200b, The plurality of plug-type connection terminals 23, 23 can be used by being connected to a wall outlet.

(Embodiment 5)
FIG. 7 is a perspective view showing a state where other types of units of the table tap system of Embodiment 5 according to the present invention are separated.

  As shown in FIGS. 1 and 7, the table tap system according to the fifth embodiment includes various types of cord units 1 having different lengths of the power cord 13 as shown in FIGS. 1 and 7. For each of the main unit 3, the power of at least one of the outlet ports constituted by the plurality of terminal insertion holes of each set in the front portions 210 and 310 and the plurality of terminal receiving portions immediately below them is turned on. It is characterized by having at least two types of switches that have at least one (three in the figure) on / off switches S2 and S3 for cutting and those that do not.

  Specifically, the on / off switch S2 includes a voltage or neutral terminal receiving portion among the plurality of terminal receiving portions immediately below the plurality of terminal insertion holes 210a and 210b, and the corresponding plug-type connection terminals 23. Between them. Similarly, the on / off switch S3 includes a terminal receiving portion of a voltage pole or a neutral pole among a plurality of terminal receiving portions immediately below the plurality of terminal insertion holes 310a and 310b, and a plug type connection terminal 33 corresponding thereto. It is interposed in series between.

  Further, the extension unit 2 and the main unit 3 shown in the example of FIG. 7 have three outlet ports, which is one more outlet port than the extension unit 2 and the main unit 3 shown in the example of FIG.

  As described above, according to the fifth embodiment, the number of outlets can be easily increased / decreased without using a tool, as in each of the embodiments described above, and only by replacing the cord unit 1 with a desired length, The length of the power cord 13 of the table tap system can be easily changed, and it can be easily changed to an outlet without an on / off switch simply by replacing the extension unit 2 or main unit 3 without an on / off switch. Can be changed.

  Further, in the fifth embodiment, since the extension unit 2 and the main unit 3 having different numbers are prepared, the number of outlet ports can be increased or decreased.

It is a perspective view which shows a mode that each unit of the table tap system of Embodiment 1 by this invention was isolate | separated. The front view (a) of the table tap system of Embodiment 2 by this invention, the figure (b) which shows the one end surface side of an expansion unit, the figure (c) which shows the other end surface side of a main body unit, and a part of code unit FIG. It is the front view (a) and its sectional view (b) of a cord unit and a main-body unit in a table tap system of Embodiment 3 by the present invention. It is the figure (d) which shows the front view (a) of the extension unit in the table tap system of Embodiment 4 by this invention, a side view (b), a rear view (c), and its cover. It is a partially expanded perspective view of the extension unit. It is the figure (a) which shows the holding mechanism of the extension unit, and the figure (b) seen from the side. It is a perspective view which shows a mode that each unit of another kind of the table tap system of Embodiment 5 by this invention was isolate | separated. It is the perspective view (a) of the conventional table tap, and its disassembled perspective view (b). It is the perspective view which added what is called a triangle tap to the table tap of FIG. It is a figure which shows a connection type table tap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Code unit 11 Power plug 111 Plug terminal 12 Connection outlet 13 Power cord 2 Extension unit 2A Extension power supply input part 20 Extension side body 200 Cylindrical part 21, 22 Half 23 Plug type connection terminal 3 Main body unit 3A Main body power input part 3B Main unit power output unit 30 Main unit side body 300 Cylindrical unit 301 Swelling unit 31, 32 Half 33 Plug type connection terminal

Claims (10)

A table tap system comprising a cord unit, a main unit having a plurality of outlets, and an extension unit having a plurality of outlets,
The main unit has a structure that is connected to the cord unit and has a structure that seals a connection portion with the cord unit, and has a structure that prohibits mutual connection between the main unit power input unit and the extension unit. The extension unit includes an extension power input unit connected to the main unit power output unit of the main unit, and the main unit power output unit and the additional power input unit A table tap system characterized in that the connection part is sealed. Only including the cord unit, the extension unit, and the main unit,
The cord unit includes a power plug that protrudes and holds a plurality of plug terminals, a connection outlet that includes a plurality of terminal insertion holes and stores a plurality of terminal receiving portions directly below the plurality of terminal insertion holes, and the power plugs and A power cord connected to a connection outlet, comprising a power cord for electrically connecting a plurality of plug terminals of the power plug and a plurality of terminal receptacles of the connection outlet;
The extension unit is formed in a hollow polyhedron shape, the extension power input section is configured on one surface, and a plurality of terminals for inserting a plurality of plug terminals of a power plug from an external device on the other surface, respectively. An extension side instrument body having a plurality of insertion holes, a plurality of plug-type connection terminals provided at the extension power supply input portion and projectingly held, accommodated in the extension side instrument body, and a plurality of sets on the other side A plurality of sets of terminal receiving portions respectively provided directly below the plurality of terminal insertion holes, and the plurality of plug-type connection terminals and the plurality of sets of terminal receiving portions are accommodated by polarity, respectively A plurality of conductive parts electrically connected,
The main body unit is formed in a hollow polyhedron shape, and the main body power input section is configured on one surface, and the main body power output section is connected to a plurality of plugs of the additional power input section on the other surface. A plurality of terminal insertion holes for inserting a plurality of plug terminals of a power plug from an external device on the other surface. A main body side body having a plurality of plug-type connection terminals which are provided in the main body power supply input portion and are protruded and held and electrically connected to and separated from a plurality of terminal receiving portions of the connection outlet; and A plurality of terminal receiving portions provided in a main body power output section and housed in the main body side container, respectively provided immediately below the plurality of terminal insertion holes of the main body power output section; A plurality of sets of terminal receiving portions respectively provided directly below the plurality of sets of terminal insertion holes on the other surface, and a plurality of plug-type connections of the main body power input portion housed in the main body side container A plurality of terminals, a plurality of terminal receiving portions of the main body power output unit, and a plurality of sets of terminal receiving portions immediately below the plurality of sets of terminal insertion holes on the other surface are electrically connected by polarity. With a conductive part,
The portion of the main body side container constituting the main body power input portion is electrically connected to the plurality of plug-type connection terminals of the main body power input portion and the plurality of terminal receptacles of the connection outlet, respectively. In addition, while being formed in a shape that seals these connection parts,
The main body side body part constituting the main body power output part and the additional side body part constituting the additional power source input part are a plurality of terminal receiving parts of the main body power output part and the additional power source input part. The table tap system according to claim 1, wherein when the plurality of plug-type connection terminals are electrically connected to each other, the connection portions are formed in a sealed shape. The additional side body is formed in a hollow rectangular shape having one direction as a longitudinal direction, and has a plurality of terminal insertion holes of the plurality of sets on one side surface of both wide side surfaces on each side surface,
The main body side body is formed in a hollow rectangular shape having one direction as a longitudinal direction, and has a plurality of terminal insertion holes of the plurality of sets on one side surface of both wide side surfaces on each side surface,
The main body power input part of the main body side body extends from one end surface of both end surfaces of the main body side body and the outer peripheral edge of the end surface to be flush with each side surface of the main body side body, A cylindrical portion having a pair of notches in each of the portions extending from the wide side surfaces of the main body side body, and a plurality of the main body power input portions on the one end surface in the cylindrical portion. The plug-type connection terminal is protruded and held, and when the plurality of plug-type connection terminals are electrically connected to the plurality of terminal receiving portions of the connection outlet, respectively, the cylindrical portion of the main body power input portion, Engage and seal the connection part with the connection outlet and pinch both sides of the connection outlet to strengthen the mechanical connection with the connection outlet,
The main body power output section of the main body side container is bulged to the other end surface of the main body side container and the remaining portion excluding the outer peripheral edge of the end surface, and a plurality of terminal insertion holes of the main body power output section are formed on the bulging surface And the expanded power input portion of the additional side instrument body is a part of both end surfaces of the additional side instrument body. One end surface and a cylindrical portion that extends from the outer peripheral edge of the end surface to be flush with each side surface of the additional side body, and is fitted to the bulging portion of the main body power output portion. A plurality of plug-type connection terminals of the additional power supply input section are protruded and held on the one end face in the cylindrical section,
When the plurality of terminal receiving portions of the main body power output section and the plurality of plug-type connection terminals of the additional power input section are electrically connected to each other, these connecting portions are connected to the expansion of the main body power output section. The table tap system according to claim 1, wherein the table tap system is hermetically sealed by fitting between a protruding portion and a cylindrical portion of the additional power supply input portion and mechanical connection is strengthened. Each of the cord unit, the extension unit, and the main unit is for two electrodes, a voltage electrode and a neutral electrode,
The table tap system according to any one of claims 1 to 3, wherein a reverse connection preventing means is provided in each of the additional power supply input section and the main body power supply output section.   The connection state recognition means for indicating whether or not the connection state of the connection outlet and the main unit power input unit is normal is provided in at least the connection outlet among the connection outlet and the main unit power input unit. 5. The table tap system according to any one of 4. The connection outlet has a pair of anti-slip portions at positions corresponding to the pair of notches of the main body power input portion of the main body side container,
The extension unit has a non-slip portion on both side surfaces of the narrow side of each side of the extension side body,
The table tap system according to any one of claims 3 to 5, wherein the main body unit has a non-slip portion on both narrow side surfaces of each side surface of the main body side body. Each of the cord unit, the extension unit, and the main unit is for two electrodes, a voltage electrode and a neutral electrode,
The plurality of plug-type connection terminals have the same shape as the plurality of plug terminals of the power plug of the cord unit,
The cylindrical part of the additional power supply input part is a cover that is detachably attached to the cylindrical part, with the part that is flush with the other side of the wide side surfaces of the additional side body,
The extension power supply input section includes a holding mechanism that holds the base end sides of the plurality of plug-type connection terminals so that the tip end sides thereof can be bent to the cover side. Table tap system as described in any of. Various types of power cords with different lengths for the cord unit,
For each of the extension unit and the main body unit, the power supply of at least one outlet port among the outlet ports constituted by the plurality of terminal insertion holes of each set on the other surface and the plurality of terminal receiving portions immediately below them. The table tap system according to any one of claims 1 to 7, comprising at least two types of switches that have at least one on / off switch for turning on / off. .   An extension unit constituting the table tap system according to any one of claims 1 to 8.   A main body unit comprising the table tap system according to any one of claims 1 to 8.

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