JP2010097875A - Plug receptacle for rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug receptacle for a rack with which inserting plugs from an information equipment to be housed in a rack device are connected and an DC power source is supplied to the information equipment. <P>SOLUTION: A fixture body 2 of the plug receptacle for rack 1 is provided in a front surface with a plurality of plug inserting ports 10 for inserting plugs to be in free insertion/removing and is provided with fitting pieces 6 having screw-insertion holes 6a on both end parts in the longitudinal direction. The plug inserting port 10 is provided with a power source terminal connecting part 10A and a grounding terminal connecting part 10B for being connected each with a voltage electrode pin terminal and a grounding electrode pin terminal of the inserting plug respectively, and the power source terminal connecting part 10A is provided with a cylindrical projection part 12 which projects frontward from a bottom surface of a plug inserting hole 11 through which the inserting plug is inserted and which is to be inserted into a coupling hole provided on a front surface of the inserting plug, terminal inserting holes 14a, 14b which are open on the front surface of the projection part 12 and in which the voltage electrode pin terminal is inserted for connection, and a blade receiving member for a voltage electrode to be connected electrically with the pin terminal inserted inside through the terminal insertion holes 14a, 14b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rack plug receiver that forms an insertion connector together with an insertion plug.

  Conventionally, as shown in FIGS. 19A and 19B, a rack (so-called information rack) 100 in which a server 111 such as a Web server and a LAN device 112 such as a router are accommodated in a housing 101 has been provided.

  The cabinet 101 of the information rack 100 shown in FIGS. 19A and 19B has a box shape with openings 102 and 103 provided on the front and rear surfaces, and the front opening 102 is closed by a door 104 so as to be opened and closed. Has been. Inside the housing 101, two mounting rails 105 and 106 extending in the vertical direction are disposed on both the left and right sides of the housing 101 in the vicinity of the opening 102 on the front surface side. Each of the mounting rails 105 and 106 has a narrow rectangular plate shape, and is disposed along the vertical direction from the vicinity of the top plate of the housing 101 to the vicinity of the bottom plate. A plurality of screw holes 107 are formed in each of the mount rails 105 and 106, and the screw holes 107 provided in the mount rail 105 and the screw holes 107 provided in the mount rail 106 are provided at substantially the same height. It has been.

  On the other hand, the server 111 and the LAN device 112 housed in the information rack 100 are formed in a low-profile rectangular parallelepiped shape, and are attached to the mounting rails 105 and 106 on the left and right sides of the panel plate provided on the front side. A piece 113 is provided. The mounting piece 113 is provided with a screw insertion hole, and a mounting screw (not shown) that is passed through the screw insertion hole is screwed into the screw hole 107 of the mount rails 105 and 106, whereby the server 111 and the LAN device 112 are connected. Can be attached to the information rack 100.

Further, in the information rack 100 described above, a rack plug receiver is accommodated for supplying commercial AC power to information devices such as the server 111 and the LAN device 112 (see, for example, Patent Document 1). The rack plug receptacle is provided with a plurality of plug insertion openings. When the insertion plug provided on the power cord from the information device is plugged into the plug insertion receptacle, the rack plug receptacle receives the commercial AC from the rack plug receptacle to the information appliance. Power was supplied.
JP 2008-34150 A

  The rack plug receiver described in the above-mentioned patent document includes a plurality of plug insertion ports into which plugs provided on power cords from information equipment are plugged in, but these plug insertion ports This is a plug socket for AC100V with a grounding electrode, and can only supply AC100V power to information equipment.

  Therefore, among information devices stored in the information rack, information devices that operate with a DC power supply are provided with a terminal block having screw terminals for connecting a power supply line from the DC power supply, and the DC power supply is connected to the terminal block. Since the DC power was supplied by screwing the power line from, there was a problem that workability was poor. Also, in each information device, when the AC 100V power supplied from the rack plug receiver is converted to a DC power source, conversion loss due to AC / DC conversion occurs in each information device, so the information device stored in the information rack There was a problem that the overall power loss increased.

  The present invention has been made in view of the above problems, and an object of the present invention is to supply DC power to the information equipment stored in the information rack via the plug from the information equipment. The object of the present invention is to provide a rack receptacle that can be used.

  In order to achieve the above object, the invention of claim 1 includes a fitting portion in which a round hole-like fitting hole is opened on the front surface, a reference rib indicating a reference position protruding from the inner peripheral surface of the fitting hole, Pin terminals for a plurality of voltage electrodes arranged along the plug insertion / extraction direction inside the fitting hole, and pins for the ground electrode arranged along the plug insertion / extraction direction outside the fitting hole at the fitting portion. A rack plug receptacle that constitutes an insertion connector together with an insertion plug provided with a terminal, and includes a plurality of plug insertion ports on the front surface of the instrument body to which the insertion plug is removably connected. Has a mounting means for mounting to a rack device that accommodates a plurality of information devices, and a plug terminal can be freely inserted into and removed from a voltage electrode pin terminal and a ground electrode pin terminal provided in the plug plug, respectively. Power terminal connection and ground terminal connection connected to The power supply terminal connection portion is directed forward from the bottom surface of the plug insertion hole in a state where a gap is provided between the plug insertion hole and the inner peripheral surface of the plug insertion hole into which the fitting portion of the insertion plug is inserted. A cylindrical protrusion that protrudes and is inserted into the fitting hole, a terminal insertion hole that is opened on the front surface of the protrusion and into which the pin terminal for the voltage electrode is inserted and connected, and DC power from an external DC power source And a voltage electrode blade receiving member electrically connected to a voltage electrode pin terminal inserted into the protruding portion through the terminal insertion hole.

  According to a second aspect of the present invention, in the first aspect of the invention, there is provided a connection terminal in which a fuse for overcurrent protection is inserted and connected to the electric circuit between the input portion of the DC power source and the blade receiving member for the voltage electrode. It is provided.

  According to a third aspect of the present invention, in the first aspect of the invention, a circuit breaker for overcurrent protection is provided in an electric circuit between the input portion of the DC power source and the blade receiving member for the voltage electrode. And

  According to a fourth aspect of the present invention, in the second aspect of the invention, the plurality of plug insertion ports are divided into a plurality of systems of circuits, and the blade receiving member for the voltage electrode and the input of the DC power source provided in the plug insertion port of each system A fuse is provided in each electric circuit between the two parts.

  According to a fifth aspect of the present invention, in the third aspect of the invention, the plurality of plug insertion ports are divided into a plurality of circuits, and the blade receiving member for the voltage electrode provided in the plug insertion port of each system and the input of the DC power supply A circuit breaker is provided in each of the electric paths between the two parts.

  The invention of claim 6 is the invention according to any one of claims 1 to 5, wherein the current measurement means for measuring the total value of the load current flowing from the plurality of plug insertion ports to the load, and the measurement result of the current measurement means are output. The rack plug receiver according to any one of claims 1 to 5, further comprising: an output unit configured to perform output.

  A seventh aspect of the invention is characterized in that in any of the first to sixth aspects of the invention, a wiring connection terminal to which a wiring from an external DC power source is connected is provided.

  The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein a power cord led out from the body and an insertion plug provided on the power cord and detachably connected to a power outlet The insertion plug includes a fitting portion in which a round hole-shaped fitting hole opens on the front surface, a reference rib indicating a reference position protruding from the inner peripheral surface of the fitting hole, and a fitting hole A plurality of voltage electrode pin terminals arranged along the plug insertion / extraction direction inside, and a ground electrode pin terminal arranged along the plug insertion / extraction direction outside the fitting hole at the fitting portion. It is characterized by that.

  According to the first aspect of the present invention, the insertion plug from the information device housed in the rack device is inserted and connected to the plug insertion port of the rack plug receptacle, so that the rack plug receptacle can connect to the information appliance. Since DC power can be supplied, there is an effect that the workability is improved as compared with the case where the power supply line is connected to the terminal block of the information device. Also, since DC power is directly supplied to each information device, conversion loss due to AC / DC conversion can be eliminated compared to the case where an individual power supply converts AC power into DC power and obtains an operating power. The power loss can be reduced in the entire information device stored in the information rack.

  According to the second aspect of the present invention, when the overcurrent flows, the fuse is blown to prevent the overcurrent from continuing to flow into the load of information equipment or the like, and the rack plug receiver is connected to the fuse. Therefore, the fuse can be easily replaced after the fuse is blown by overcurrent.

  According to invention of Claim 3, it can prevent that an overcurrent continues flowing because a circuit breaker performs a trip operation. Moreover, to eliminate the cause of overcurrent and restore power supply to the load, it is only necessary to perform the recovery operation by turning on the operation handle of the circuit breaker, making it easy to restore power supply to information equipment. Can be done.

  According to the invention of claim 4, since the plurality of plug insertion ports provided in the rack plug receiver are divided into a plurality of circuits, and a fuse is provided for each circuit of each system, one rack plug receiver is provided. The rated current for multiple circuits can be made to flow. Accordingly, the current capacity per one rack plug receptacle can be increased as compared with the case where a plurality of plug insertion ports provided in the rack plug receptacle are formed as one circuit and only one fuse is provided. As a result, the number of rack plug receptacles can be reduced, so that the number of wirings from the DC power source to the rack plug receptacles can be reduced, and the labor of wiring work can be reduced.

  According to the invention of claim 5, since the plurality of plug insertion openings provided in the rack plug receiver are divided into a plurality of circuits, and a circuit breaker is provided for each circuit of each system. The rated current for multiple circuits can flow through the plug receptacle. Therefore, the current capacity per unit of the rack plug receptacle is increased as compared with the case where the plurality of plug insertion ports provided in the rack plug receptacle are formed as one circuit and only one circuit breaker is provided. As a result, the number of rack plug receptacles can be reduced, so that the number of wires from the DC power supply to the rack plug receptacle can be reduced, and the labor of wiring work can be reduced.

  According to the invention of claim 6, since the output means for outputting the measurement result of the current measurement means is provided, the load current supplied to the load from one rack plug receiver can be easily grasped.

  According to the seventh aspect of the present invention, the DC power can be supplied to the rack plug receptacle by connecting the wiring from the DC power supply to the wiring connection terminal provided in the outlet-type rack plug receptacle.

  According to the invention of claim 8, by connecting the plug of the power cord derived from the tap-type rack plug receptacle to the power outlet for the DC power supply, DC power can be supplied. Therefore, as compared with the case where the wiring from the DC power source is connected to the wiring connection terminal of the rack plug receiver, the electric work is not required and the workability can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS. The outlet-type rack plug receptacle 1 of this embodiment forms an insertion connector together with an insertion plug 50 (see FIG. 6), and stores an information rack 100 that houses a server 111 such as a Web server and a LAN device 112 such as a router. (See FIG. 19) and used to supply DC power to information devices (server 111, LAN device 112, etc.) inside the information rack 100.

  FIG. 1 (a) is a front view of an outlet-type rack plug receiver 1, and FIG. 1 (b) is a side view of the rack plug receiver 1. The rack plug receiver 1 has an elongated rectangular parallelepiped shape that constitutes an outer shell. The container body 2 is provided, and a plurality of (for example, six in this embodiment) plug insertion ports 10 are arranged in the longitudinal direction on the front surface (front surface in FIG. 1A) of the container body 2. Yes.

  The body 2 has an elongated rectangular parallelepiped body 3 with an open front surface, a substantially box-like shape with an open rear surface, and a cover 4 that covers substantially the entire front opening of the body 3 except for the lower terminal portion. The terminal cover 5 that covers a portion of the opening of the body 3 that is not covered with the cover 4 is assembled.

  From the rear side edges of the upper and lower ends of the body 3, attachment pieces 6 each having a screw insertion hole 6a are extended, and the attachment screws passed through the screw insertion holes 6a of the attachment pieces 6 are connected to the information rack 100. The rack plug receiver 1 is attached to the information rack 100 by being screwed into a screw hole provided in the information rack 100. Here, the attachment means is comprised from the attachment piece 6 which has the screw penetration hole 6a.

  On one end side in the longitudinal direction of the vessel body 2 (lower side in FIG. 4), a recessed portion 20a that is recessed in a semicircular shape is provided at a contact portion between the body 3 and the terminal cover 5, respectively. In a state where the cover 5 is combined, a round hole-shaped cable inlet 20 is formed from the recess 3 a of the body 3 and the terminal cover 5. Further, the body 3 includes a tripolar screw terminal to which a power cable (consisting of a DC power supply line and a ground line) is connected to a portion covered with the terminal cover 5 at a portion covered with the terminal cover 5. The wiring connection terminals 21A to 21C are accommodated. Further, inside the body 3, a holding plate 22 that holds the power cable by pressing the outer cover of the power cable between the wiring connection terminals 21 </ b> A to 21 </ b> C and the cable introduction port 20 is attached to the body 3 using the mounting screw 23. It is screwed.

  In addition, a plug insertion port 10 is provided on the surface of the body 2 covered with the cover 4, and an inner shell 7 in which blade receiving members for voltage electrodes and ground electrodes are housed is housed. The plurality of plug insertion openings 10 provided on the surface of the inner shell 7 are exposed to the outside through the exposure holes 4a provided in the container body 2 (cover 4) forming the outer shell. Note that the terminal plates 21 a of the wiring connection terminals 21 </ b> A to 21 </ b> C are electrically connected to the blade receiving members housed in the inner shell 7, respectively.

  By the way, although the container 2 and the inner shell 7 are each formed of a synthetic resin, an arc is generated when the plug 50 from a load such as an information device is inserted into and removed from the plug insertion port 10. For this reason, since the contact portion between the plug blade of the plug 50 and the blade receiving member on the plug receiver 1 side may become high temperature, the inner shell 7 that houses the blade receiving member is required to have heat resistance. The On the other hand, the container body 2 forming the outer shell may fall or collide with other articles, so the container body 2 is required to have impact resistance. Here, since it is difficult to satisfy both heat resistance and impact resistance with the same material, in this embodiment, the inner shell 7 is molded with a thermosetting synthetic resin having heat resistance, and the impact resistance is improved. The container body 2 (the body 3, the cover 4, and the terminal cover 5) is formed by resin molding using the thermoplastic synthetic resin, and the container body 2 covers the outside of the inner shell 7.

  Next, the insertion plug 50 connected to the plug insertion port 10 provided in the rack plug receiver 1 will be described with reference to FIGS. As shown in FIGS. 6 and 7, the plug 50 includes a grip 51 provided on an electric wire 61 from an information device such as a server or a LAN device. The grip 51 has a substantially rectangular parallelepiped shape, and one surface (the upper surface in FIG. 7A) is curved in a semicircular cross section, and the front side of the grip 51 has a slightly outer dimension compared to the rear side. A small fitting portion 52 is provided integrally. On the front surface of the fitting portion 52, a fitting hole 53 recessed in a round hole shape opens on the upper side in FIG. 7A, and a fitting hole 54 recessed in a square hole shape opens on the lower side in FIG. In addition, a predetermined interval is provided between the fitting hole 53 and the fitting hole 54.

  Inside the square hole-shaped fitting hole 54, a pin terminal 56 for a ground electrode formed in a round bar shape with a conductive material is arranged close to one side. On the other hand, two pin terminals 55a and 55b for voltage electrodes, each formed in a round bar shape with a conductive material, are arranged inside the round hole-like fitting hole 53. On the inner peripheral surface of the fitting hole 53, a reference rib 57 indicating a reference position is provided so as to protrude along the plug insertion / removal direction (left-right direction in FIG. 7B). The two pin terminals 55a, symmetric with respect to the center position are located on a straight line passing through the center position of the fitting hole 53 and orthogonal to the line segment connecting the center position and the reference rib 57. 55b is arranged along the plug insertion / extraction direction. Here, in the plug 50 for direct current power supply, as shown in FIG. 8A, when the reference rib 57 is viewed upward, the pin terminal 55a located on the right side has the pin terminal 55b located on the positive side and the pin terminal 55b located on the left side. It is a pin terminal on the negative electrode side.

  Further, on the inner peripheral surface of the fitting hole 53, an identification rib 58 for preventing an erroneous connection extending along the plug insertion / extraction direction protrudes at a position corresponding to the type of power supply (difference in rated voltage). FIG. 8A shows the position of the identification rib 58 provided in the plug 50 for DC power supply. When the power supply voltage is DC6V, 12V, 24V, and 48V, the position of the reference rib 57 is the reference (0 The identification ribs 58 are formed one by one at the positions of 120 °, 150 °, 210 °, and 240 ° counterclockwise. The shape, size, and pole arrangement of the mating portion conforms to the IEC standard (CEI / IEC 906-3) defined for the socket and plug for SELV (Safety Extra Low Voltage) circuit. In the IEC standard, the position of the identification rib 57 is also defined for an alternating SELV power supply. FIG. 8B shows the position of the identification rib 58 provided in the AC power supply socket. When the power supply voltage is AC6V, 12V, 24V, and 48V, the position of the reference rib 57 is used as a reference. One identification rib 58 is formed at each of the positions of 30 °, 60 °, 300 °, and 330 ° counterclockwise. Here, the plug shown in FIGS. 6 and 7 is for DC48V, and an identification rib 58 is formed at a position of 240 ° counterclockwise with respect to the reference rib 57.

  On the other hand, as shown in FIGS. 2 and 3, the plug insertion port 10 provided in the rack plug receiver 1 has the same shape and size as the front surface of the fitting portion 52 of the insertion plug 50 and is fitted. The plug insertion hole 11 to which the part 52 is connected so as to be freely inserted and removed is opened. From the bottom surface of the plug insertion hole 11, there are a columnar protrusion 12 inserted into the fitting hole 53 of the plug 50 and a prismatic protrusion 13 inserted into the fitting hole 54. Each is formed to project forward. Note that the prismatic protrusion 13 has a width dimension (a dimension in the left-right direction in FIG. 2A) that is substantially half that of the fitting hole 54.

  Terminal insertion holes 14a and 14b into which pin terminals 55a and 55b for voltage electrodes are inserted are opened on the front surface of the cylindrical protrusion 12, and terminal insertion holes 14a are formed inside the protrusion 12. , 14b are housed in blade receiving members 15a, 15b which are electrically connected to pin terminals 55a, 55b inserted inside. The blade receiving members 15a and 15b are formed by bending an elastic band plate into an inverted Ω shape, and a pair of blade receiving spring pieces 15d protruding from both sides of the bottom piece are arranged to face each other, and the distance between them is The upper end is inclined so as to be narrower, and the upper end is inclined so that the pin terminals 55a and 55b are easily inserted so that the interval is increased toward the upper side. Further, a terminal insertion hole 16 into which the ground electrode pin terminal 56 is inserted is opened in the front surface of the protruding portion 13. A blade receiving member (not shown) having a shape similar to that of the above-described blade receiving members 15a and 15b is accommodated in the protruding portion 13, and the pin terminal 56 inserted inside through the terminal insertion hole 16 is accommodated. Is electrically connected to the blade receiving member for the ground electrode.

  A fitting groove 17 indicating a reference position is formed along the plug insertion / extraction direction on the outer peripheral surface of the protruding portion 12, passes through the center position of the protruding portion 12, and is a line segment connecting the center position and the fitting groove 17. The terminal insertion holes 14a and 14b are opened at positions symmetrical to the center position on a straight line perpendicular to the center position. Here, the rack plug receiver 1 of the present embodiment is used for supplying DC power, and the plug socket 10 for DC power has a fitting groove 17 as shown in FIG. When viewed from the upper side, the terminal insertion hole 14a located on the left side corresponds to the positive-side pin terminal, and the terminal insertion hole 14b located on the right side corresponds to the negative-side pin terminal.

  In addition, on the outer peripheral surface of the projecting portion 12, a fitting for preventing erroneous connection, in which the identification rib 58 of the corresponding plug 50 is fitted at a position corresponding to the type of power supply (DC or AC, and rated voltage). A joint groove 18 (misconnection prevention groove) is formed. Here, FIG. 3A shows the position of the fitting groove 18 provided in the plug socket 10 for DC power supply, and when the power supply voltage is DC6V, 12V, 24V, 48V, the fitting groove 17 is respectively shown. The fitting groove 18 is formed at a position of 120 °, 150 °, 210 °, and 240 ° in the clockwise direction with respect to the position (0 °). FIG. 3B shows the position of the fitting groove 18 provided in the plug socket 10 for AC power supply. When the power supply voltage is AC6V, 12V, 24V, 48V, One fitting groove 18 is formed at a position of 30 °, 60 °, 300 °, and 330 ° clockwise with the position as a reference (0 °). Here, the plug insertion port 10 shown in FIGS. 1 and 2 is for DC48V, and a fitting groove 18 is formed at a position of 240 ° clockwise with respect to the position of the fitting groove 17. Thus, in the plug insertion port 10, the fitting groove 18 into which the identification rib 58 provided in the insertion plug 50 is engaged is formed at a position corresponding to the power supply voltage on the outer peripheral surface of the protruding portion 12. Depending on the position of the identification rib 58 and the fitting groove 18, it is possible to prevent the plug 50 having a different supply voltage from being plugged into the plug socket 10 and to supply power suitable for the load device 60. can do.

  By the way, in the above-mentioned IEC standard (CEI / IEC 906-3), the plug and socket used in the SELV (Safty Extra Low Voltage) circuit are standardized. The receptacle 1 is used for an ELV (Extra Low Voltage) circuit having a safety level lower than that of the SELV circuit. The protrusion 12 and the fitting grooves 17 and 18 of the plug insertion port 10 described above are used. The terminal insertion holes 14a and 14b have shapes, dimensions, and pole arrangements for the SELV circuit defined by the IEC standard except for the depth dimension from the outer peripheral surface of the protrusion 12 to the bottom surface of the fitting groove 17. The depth dimension of the fitting groove 17 is set to be smaller than that of the socket for the SELV circuit. Further, the shape, size, and pole arrangement of the fitting hole 53, ribs 57, 58 and pin terminals 55a, 55b of the plug 50 are also excluded, except for the amount of protrusion of the reference rib 57 from the inner peripheral surface of the fitting hole 53. It is the same as the SELV circuit plug defined by the IEC standard, and the protruding amount of the reference rib 57 is set to be smaller than the protruding amount of the reference rib provided on the SELV circuit plug.

  Therefore, when an SELV circuit plug is to be connected to the plug insertion port 10 of the rack plug receiver 1, the reference rib provided on the SELV circuit plug interferes with the fitting groove 17 of the plug insertion port 10. By doing so, it is possible to prevent the SELV circuit plug from being connected to the plug insertion port 10. Since load devices having SELV circuit plugs are used in SELV circuits having a higher insulation grade than ELV circuits, some load devices do not necessarily have sufficient insulation measures. If the device is used in an ELV circuit, an accident such as an electric shock may occur. However, since the plug for the SELV circuit cannot be connected to the plug insertion port 10 of the rack plug receiver 1, there is no insulation measure. Sufficient load equipment is not connected to the rack plug receiver 1 for use.

  In addition, the plug 50 connected to the rack plug receiver 1 is set so that the protruding amount of the reference rib 57 is smaller than that of the SELV circuit plug, so that the ELV circuit plug is connected to the SELV circuit socket. Can be connected to. Since the ELV circuit has a lower insulation grade than the SELV circuit, it is considered that the load equipment used in the ELV circuit is more adequately insulated than the load equipment used in the SELV circuit. Even if the load device used in the ELV circuit is used in the SELV circuit, it is considered that no safety problem will occur. Therefore, the ELV circuit plug 50 can be connected to the socket for the SELV circuit, and the ELV circuit and the SELV circuit. Can be used in both.

  As described above, in the rack plug receiver 1 according to the present embodiment, the plugs from the information devices that are operated by the DC power source among the information devices (such as servers and LAN devices) stored in the information rack are plugged. By inserting and connecting to the port 10, it is possible to supply DC power from the rack plug receiver 1 to the information equipment, so compared to a case where a power supply line from a DC power supply is screwed to the screw terminal of the information equipment. Workability can be improved. In addition, since DC power is supplied to each information device, conversion loss due to AC / DC conversion can be eliminated compared to the case where an AC power source is converted into a DC power source to obtain an operating power source in each information device, It is possible to reduce power loss in the entire information equipment stored in the information rack.

  By the way, in the above-described rack plug receiver 1, the power supply line and the ground line from the DC power supply are connected using the wiring connection terminals 21 </ b> A to 21 </ b> C, but the connection form of the power supply line and the ground line is a terminal such as a screw terminal. It is not intended to be limited to the wiring connection terminals 21A to 21C made of a table, and for example, as shown in FIGS. 5 (a) and 5 (b), a quick connection terminal portion 25 without screw terminals may be provided. In the rack plug receiver 1 shown in FIG. 5, three concave portions 26 are formed on one end surface in the longitudinal direction of the container body 2 and are communicated with the inside of the container body 2 at the bottom of the recess 26. The electric wire insertion hole 26a is drilled. And the inside of the container 2 has accommodated the quick connection terminal part 25 which consists of the terminal board 27 and the lock spring 28 which were formed in the substantially U shape facing each electric wire insertion hole 26a. The electric wire insertion hole 26a is formed so as to be thinner toward the tip, so that the conductor of the power line is reliably inserted between the terminal plate 27 and the lock spring 28.

  The locking piece 28b and the contact piece 28c of the locking spring 28 are formed at both ends of the central piece 28a by bending both ends of a strip of conductive material having elasticity. The central piece 28a abuts on the lower piece 27a of the terminal plate 27, and the locking piece 28b is inclined from the connecting portion with the central piece 28a toward the tip edge so as to approach the upper piece 27b of the terminal plate 27. 28 c is bent in a substantially S shape, and the locking piece 28 b and the contact piece 28 c provided on the locking spring 28 oppose the upper piece 27 b of the terminal plate 27. Thus, if the conductor of the power line is inserted into the wire insertion hole 26a, the conductor of the power line enters between the locking piece 28b and the contact piece 28c of the locking spring 28 and the terminal plate 27, and the contact piece 28c. As a result, the conductor of the power line is pressed against the terminal plate 27 and at the same time, the tip of the locking piece 28b bites into the conductor and the conductor is prevented from coming off. Here, a notch is provided in the upper piece 27b of the terminal plate 27, and a leg portion (not shown) of a release button 29 accommodated in the body 2 so as to be movable up and down is passed through the notch to each locking spring 28. The release button 29 is pressed through the operation hole 29a opened on the surface of the container body 2 so as to be opposed to the lock piece 28b of the release body 29. 28b can be flexed and pulled away from the conductor at the same time. Thus, by using the quick connection terminal portion 25 instead of the wiring connection terminals 21A to 21C formed of the screw terminal block, the screw tightening work becomes unnecessary, and the workability of the work of connecting the power line of the DC power supply is improved. Can be made.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to the drawings. The configuration of the rack plug receiver 1 is the same as that of the rack plug receiver 1 of the first embodiment except for the fuse holder 40 described later. Description is omitted.

  FIG. 11 shows an internal wiring diagram of the rack plug receiver 1. In this embodiment, in the rack plug receiver 1 described in the first embodiment, a DC power supply input section (for example, the positive side of the DC power supply is connected). Connection terminals 41, 41 to which an overcurrent protection fuse F is inserted and connected are provided in the electric circuit between the wiring connection terminal 21A) and the blade receiving member 15a for the voltage electrode. Moreover, the wiring connection terminal 21B to which the negative electrode side of the DC power source is connected is electrically connected to the blade receiving member 15b for the voltage electrode of each plug insertion port 10, and the wiring connection terminal 21C to which the ground line is connected is The plug receptacle 10 is electrically connected to the blade receiving member 15c for the ground electrode.

  Further, a fuse holder 40 in which the connection terminals 41 and 41 described above are housed is housed in the body 2 of the rack plug receiver 1 as shown in FIGS. 9 and 10. The fuse holder 40 has a substantially rectangular parallelepiped container body 42, and plug blade insertion ports 43 and 43 into which plug blades 47 and 47 of plug-in fuses 45 to be described later are respectively opened on the front surface of the container body 42. . Inside the container body 42 are housed connection terminals 41, 41 comprising blade receiving members that receive the plug blades inserted from the plug blade insertion ports 43, 43. The connection terminal 41 is formed by bending an elastic band plate into an inverted Ω-shape, and a pair of blade receiving spring pieces 41a protruding from both sides of the bottom piece are arranged to face each other, and the distance between the two becomes higher. The upper end is inclined so as to be narrower, and the upper end is inclined so that the gap is widened upward so that the plug blade 47 can be easily inserted. Here, one connection terminal 41 is electrically connected to the wiring connection terminal 21A to which the positive electrode side of the DC power supply is connected, and the other connection terminal 41 is connected to the blade receiving member 15a included in the plurality of plug insertion ports 10. Electrically connected. The fuse holder 40 is housed inside the container body 2 with the front surface of the container body 42 exposed from a window hole 44 that opens in the vicinity of the wiring connection terminals 21 </ b> A to 21 </ b> C in the cover 4.

  On the other hand, the plug-in fuse 45 detachably connected to the fuse holder 40 includes a rectangular parallelepiped case 46 as shown in FIG. 9, and the fuse F is accommodated in the case 46. A pair of plug blades 47, 47 project from one surface of the case 46, and a fuse F is electrically connected between the pair of plug blades 47, 47.

  Thus, when the plug blades 47, 47 of the plug-in fuse 45 are inserted into the plug blade insertion ports 43, 43 of the fuse holder 40, the connection terminal 41 is connected to the plug blade 47 inserted inside through the plug blade insertion port 43. Since the blade receiving spring piece 41 a is elastically contacted from both sides, the plug blade 47 is held between the connection terminals 41, so that the plug-in fuse 45 is held in the fuse holder 40. At this time, since the fuse F for overcurrent protection was connected to the electric circuit between the input part (wiring connection terminal 21A) of the DC power supply and the blade receiving member 15a for the voltage electrode, an overcurrent flowed. In this case, it is possible to prevent the overcurrent from continuing to flow by blowing the fuse F, and protect the information equipment connected to the rack plug receiver 1. Further, the rack plug receiver 1 includes connection terminals 41 and 41 into which a plug-in fuse 45 including a fuse F is inserted and connected. Therefore, even when an overcurrent flows and the fuse F is blown, the fuse F (plug There is an effect that the replacement work of the infuse 45) can be easily performed.

  By the way, in the rack plug receptacle 1 shown in FIGS. 9-11, the several plug insertion port 10 is made into one circuit, the blade receiving member 15a for voltage electrodes with which the several plug insertion port 10 is provided, and wiring connection terminal Although the fuse F is provided in the electric circuit between 21A, in the rack plug receptacle 1 shown in FIGS. 12 and 13, a plurality (for example, ten in the embodiment of FIG. 12) provided in the rack plug receptacle 1 are provided. The plug insertion port 10 is divided into two systems of circuits C1 and C2, and for each of the circuits C1 and C2, the blade receiving member 15a for the voltage electrode provided in the plug insertion port 10 of each circuit C1 and C2 and the wiring connection terminal A fuse holder 40 is connected to the electric path between 21A.

  12A is a front view of the rack plug receiver 1, and FIG. 12B is a side view of the rack plug receiver 1. A plurality of plugs are inserted into the body 2 of the rack plug receiver 1. FIG. The ports 10 are arranged side by side in the longitudinal direction, and the upper five in the figure are the plug insertion ports 10 of the circuit C1, and the lower five in the drawing are the plug insertion ports 10 of the circuit C2. A fuse holder 40 on the circuit C1 side is disposed between the plug insertion port 10 on the circuit C1 side and the plug insertion port 10 on the circuit C2 side on the front surface of the container body 2, and the plug on the circuit C2 side is provided. A fuse holder 40 on the circuit C2 side is disposed between the insertion port 10 and the wiring connection terminals 21A to 21C.

  Thus, by connecting the plug-in fuse 45 to the fuse holder 40 of each circuit C1, C2, the blade receiving member 15a for the voltage electrode provided in the plug insertion port 10 is provided for each circuit C1, C2 of each system. The fuse F can be connected to the electric path between the wiring connection terminals 21A. In the rack plug receiver 1 shown in FIGS. 12 and 13, the plurality of plug insertion ports 10 are divided into two circuits C1 and C2, but are divided into three or more circuits, and a plug is provided for each circuit. The fuse F may be connected to an electric circuit between the blade receiving member for the voltage electrode provided in the insertion port 10 and the wiring connection terminal.

  As described above, in the rack plug receiver 1 shown in FIGS. 12 and 13, the plurality of plug insertion ports 10 provided in the rack plug receiver 1 are divided into a plurality of circuits, and a fuse F is provided for each circuit of each system. Since it is provided, the rated current for a plurality of circuits can be flowed with one rack plug receiver 1. Therefore, the current capacity per unit of the rack plug receiver 1 is larger than that in the case where the plurality of plug insertion ports 10 included in the rack plug receiver 1 are configured as one circuit and only one fuse F is provided. Since the number of rack plug receptacles 1 can be reduced, the number of wires from the DC power source to the rack plug receptacle 1 can be reduced, and wiring work can be easily performed.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. The configuration of the rack plug receiver 1 is the same as that of the rack plug receiver 1 of the first embodiment except for a circuit breaker 48 described later. The description is omitted.

  FIG. 15 shows an internal wiring diagram of the rack plug receiver 1. In this embodiment, in the rack plug receiver 1 described in the first embodiment, the wiring connection terminals 21 </ b> A and 21 </ b> B that are input portions of the DC power supply and the voltage are shown. A two-pole circuit breaker 48 for overcurrent protection is provided on the electric path between the pole blade receiving members 15a and 15b. Note that the blade receiving member 15c for the ground electrode is electrically connected to the wiring connection terminal 21C to which the ground wire is connected.

  The circuit breaker 48 includes a case 48a made of a synthetic resin molded product as shown in FIGS. 12A and 12B. Inside the case 48a, the blade receiving members 15a and 15b and the wiring connection terminals 21A and 21B are provided. Two-pole contacts 48b, 48b connected between each other, an opening / closing mechanism for opening or closing the contacts 48b, 48b according to the operation of the operation handle 48c exposed on the front surface, and the contacts 48b, 48b An overcurrent detection circuit (not shown) for forcibly opening the contacts 48b, 48b by an opening / closing mechanism when an overcurrent is detected is housed.

  As described above, in the present embodiment, an overcurrent is caused in the electric circuit between the wiring connection terminals 21A and 21B (input part of the DC power supply) to which the power supply line of the DC power supply is connected and the blade receiving members 15a and 15b for the voltage electrode. Since the circuit breaker 48 for protection is connected, when an overcurrent flows through the load having the plug plug connected to the plug insertion port 10, the circuit breaker 48 performs a trip operation, and the circuit breaker 48 Since the 48 contacts 48b and 48b are forcibly opened, it is possible to prevent overcurrent from continuing to flow through the load.

  In this embodiment as well, like the rack plug receiver 1 shown in FIG. 13, the plurality of plug insertion ports 10 provided in the rack plug receiver 1 are divided into a plurality of circuits, and the plug insertion ports of each system are provided. A circuit breaker 48 for overcurrent protection is provided in the electric circuit between the blade receiving members 15a and 15b for the voltage electrode included in the circuit 10 and the wiring connection terminals 21A and 21B to which the power supply line of the DC power supply is connected. Alternatively, the rated current for a plurality of circuits can be flowed by one rack plug receiver 1. Therefore, the plurality of plug insertion ports 10 provided in the rack plug receiver 1 is a single circuit, and compared with the case where only one circuit breaker 48 is provided, the number of the rack plug receiver 1 per unit is one. Since the current capacity can be increased and thereby the number of rack plug receptacles 1 can be reduced, the number of wirings from the DC power supply to the rack plug receptacles 1 can be reduced and wiring work can be easily performed.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIGS. Note that the configuration of the rack plug receiver 1 is the same as that of the first embodiment except for a current measurement block 70 described later, and therefore, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

  FIG. 17 is an internal circuit diagram of the rack plug receiver 1, and the current measuring block 70 detects a current flowing in the electric circuit between the blade receiving member 15 a provided in the plurality of plug insertion ports 10 and the wiring connection terminals 21 </ b> A. A DC current sensor 71, an arithmetic processing circuit 72 for obtaining a current value from a detection value of the DC current sensor 71, a display unit 73 formed of, for example, a 7-segment liquid crystal display, and an RJ45 modular jack used in Ethernet (registered trademark) A LAN circuit 74 and a communication circuit 75 for communicating with an external LAN device via a LAN cable connected to the LAN connector 74 in accordance with the Ethernet (registered trademark) protocol.

  The direct current sensor 71, the arithmetic processing circuit 72, the display unit 73, the LAN connector 74, and the communication circuit 75 of the current measurement block 70 are accommodated in a substantially box-shaped case 76, and the display unit 73 and the LAN connector 74 are included in the case 76. It is exposed on the front. The case 76 is housed inside the body 2 with the front display 73 and the LAN connector 74 exposed from the opening on the front of the body 2.

  As described above, the rack plug receiver 1 of the present embodiment includes the current measurement block 70, and when the DC current sensor 71 converts the magnetic field generated by the current flowing in the electric path into an electric quantity (for example, voltage), the calculation is performed. The processing circuit 72 obtains a current value by calculation based on the amount of electricity input from the DC current sensor 71 and displays it on the display unit 73 formed of a liquid crystal display. A monitoring device (not shown) is caused to transmit a current value. Thus, the load current supplied from one rack plug receiver 1 to the load can be easily grasped on the basis of the display result displayed on the display unit 73 on the user side. The user of the monitoring device that collects the current measurement value from the current measurement block 70 via the LAN can monitor the rack to be monitored based on the measurement value output to the output device (monitor, printer, etc.) on the monitoring device side. It is possible to easily grasp the load current supplied from the plug receiver 1 to the load.

  The arithmetic processing circuit 72 compares the current value obtained from the detected value of the DC current sensor 71 with a preset current threshold value, and if the current value exceeds the threshold value, the communication circuit An alarm signal may be transmitted from 75 to an external monitoring device via a LAN, and an increase in load current can be monitored on the monitoring device side.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIGS. In Embodiments 1 to 4 described above, the outlet-type rack plug receiver 1 has been described, but in this embodiment, the tap-type rack plug receiver 1 will be described. Since the basic configuration of the rack plug receiver 1 is the same as that of the first embodiment, common components are denoted by the same reference numerals and description thereof is omitted.

  In the rack plug receiver 1 of this embodiment, instead of the wiring connection terminals 21 </ b> A to 21 </ b> C, a power cord 88 led out from the container 2 and a plug 80 provided at an end of the power cord 88. By connecting the plug 80 to a power outlet (not shown) for DC power supply, DC power is supplied to the rack plug receiver 1.

  The plug 80 has a substantially rectangular parallelepiped shape, and has a gripping portion 81 whose one surface (upper surface in FIG. 18C) is curved in a semicircular cross section, and the front surface of the gripping portion 81 is recessed in a round hole shape. The fitting hole 82 is opened on the upper side in FIG. 18C and the fitting hole 83 recessed in a square hole shape is opened on the lower side in FIG. Is provided with a predetermined interval.

  Inside the square hole-shaped fitting hole 83, a pin terminal 85 for a grounding electrode formed in a round bar shape with a conductive material is arranged close to one side. On the other hand, two pin terminals 84a and 84b for voltage electrodes, each formed in a round bar shape from a conductive material, are arranged inside the round hole-like fitting hole 82. On the inner peripheral surface of the fitting hole 82, a reference rib 86 indicating a reference position is provided so as to project along the plug insertion / removal direction (a direction perpendicular to the paper surface in FIG. 18C). Then, two pin terminals 84a, symmetric with respect to the center position are formed on a straight line passing through the center position of the fitting hole 82 and orthogonal to the line segment connecting the center position and the reference rib 86. 84b is arrange | positioned along the plug insertion / extraction direction. Here, in the plug 80 for DC power supply, as shown in FIG. 18C, when the reference rib 86 is viewed upward, the pin terminal 84a located on the right side has the pin terminal 84b located on the positive side and the pin terminal 84b located on the left side. It is a pin terminal on the negative electrode side. Further, on the inner peripheral surface of the fitting hole 82, an identification rib 87 for preventing misconnection is provided so as to extend along the plug insertion / extraction direction at a position corresponding to the type of power supply (difference in rated voltage). The arrangement position of the identification rib 87 is the same as that of the identification rib 58 of the plug 50 described with reference to FIG.

  Note that the tap-type rack plug receptacle 1 shown in FIG. 18 is obtained by changing the outlet-type rack plug receptacle 1 described in the first embodiment into a tap shape, but the rack-type receptacle described in the second to fourth embodiments. Needless to say, the plug receptacle 1 may be changed to the tap-type rack receptacle 1.

The plug receptacle for racks of Embodiment 1 is shown, (a) is a front view, (b) is a side view. The plug insertion port same as the above is shown, (a) is an enlarged view of a main part, (b) is an AA sectional view, and (c) is a BB sectional view. The position of the fitting groove | channel provided in the plug insertion port same as the above is shown, (a) is explanatory drawing in the case of DC power supply, (b) is explanatory drawing in the case of AC power supply. It is a front view which can omit a part of the state which removed the terminal cover same as the above. The other form of a terminal part same as the above is shown, (a) is sectional drawing of a terminal part, (b) is an external appearance perspective view. It is an external appearance perspective view of the insertion plug connected to the same. The insertion plug connected to the same is shown, (a) is a front view, (b) is a CC cross-sectional view, and (c) is a DD cross-sectional view. The position of the identification rib provided in the plug connected to the same as above is shown, (a) is an explanatory diagram in the case of a DC power supply, (b) is an explanatory diagram in the case of an AC power supply. The rack receptacle of Embodiment 2 is shown, (a) is a front view, (b) is a side view. It is a front view which shows a plug receiver for racks same as the above and can be partially omitted with the fuse removed. It is an internal circuit diagram same as the above. The other example of a rack plug receiver same as the above is shown, (a) is a front view, (b) is a side view. It is an internal circuit diagram same as the above. The rack receptacle of Embodiment 3 is shown, (a) is a front view, (b) is a side view. It is an internal circuit diagram same as the above. The plug receptacle for racks of Embodiment 4 is shown, (a) is a front view, (b) is a side view. It is an internal circuit diagram same as the above. The rack plug receptacle of Embodiment 5 is shown, (a) is a front view, (b) is a side view, (c) is the figure which looked at the insertion plug from the front. The information rack using the same is shown, (a) is an external perspective view seen from the front, (b) is an external perspective view seen from the rear.

Explanation of symbols

1 Rack receptacle 2 Body 6 Mounting piece (mounting means)
6a Screw insertion hole 10 Plug insertion port 10A Power supply terminal connection part 10B Ground terminal connection part 11 Plug insertion hole 12 Projection part 14a, 14b Terminal insertion hole 15a, 15b Blade receiving member for voltage electrode 50 Insertion plug 52 Fitting Joint part 53 Fitting hole 55a, 55b Pin terminal for voltage electrode 56 Pin terminal for ground electrode 57 Reference rib 100 Information rack (rack device)
111 server 112 LAN device

Claims (8)

A fitting portion with a round hole-shaped fitting hole on the front surface, a reference rib indicating a reference position protruding from the inner peripheral surface of the fitting hole, and a plug hole in the fitting hole, respectively. A plurality of voltage electrode pin terminals and a plug connector having a ground electrode pin terminal arranged along the plug insertion / extraction direction outside the fitting hole in the fitting portion. A rack plug receptacle,
Provided with a plurality of plug insertion openings on the front surface of the instrument body to be removably connected to the insertion plug, the instrument body is provided with an attachment means for attaching to a rack device that houses a plurality of information equipment,
The plug insertion port includes a power terminal connecting portion and a ground terminal connecting portion to which a pin terminal for a voltage electrode and a pin terminal for a ground electrode provided in the plug are detachably connected,
The power terminal connecting portion protrudes forward from the bottom surface of the plug insertion hole in a state where a gap is provided between the plug insertion hole into which the fitting portion of the insertion plug is inserted. DC power from an external DC power source, a cylindrical projection inserted into the fitting hole, a terminal insertion hole that opens to the front of the projection and is connected to a pin terminal for a voltage electrode A rack plug receiver comprising a voltage electrode blade receiving member that is supplied and electrically connected to a pin terminal for a voltage electrode that is inserted into the projecting portion through the terminal insertion hole.   The connection terminal to which the fuse for overcurrent protection is inserted and connected is provided in the electric circuit between the input part of the DC power supply and the blade receiving member for the voltage electrode. Rack plug receptacle.   2. The rack plug receiver according to claim 1, wherein a circuit breaker for overcurrent protection is provided in an electric circuit between the input portion of the DC power source and the blade receiving member for the voltage electrode.   The plurality of plug insertion ports are divided into a plurality of systems of circuits, and the fuses are respectively provided in the electric paths between the voltage electrode blade receiving member and the input part of the DC power supply provided in the plug insertion ports of each system. The rack plug receiver according to claim 2, wherein the rack plug receiver is provided.   The plurality of plug insertion ports are divided into a plurality of systems of circuits, and the circuit breakers are respectively connected to the electric circuit between the voltage electrode blade receiving member and the DC power supply input section provided in each system of the plug insertion ports. 4. The rack plug receptacle according to claim 3, wherein the rack plug receptacle is provided.   6. The apparatus according to claim 1, further comprising: a current measuring unit that measures a total value of load currents flowing from the plurality of plug insertion ports to the load; and an output unit that outputs a measurement result of the current measuring unit. The rack plug receiver according to any one of the above.   The rack plug receiver according to any one of claims 1 to 6, further comprising a wiring connection terminal to which wiring from an external DC power supply is connected.   A power cord led out from the container body, and a plug that is provided on the power cord and is detachably connected to a power outlet. The plug has a round hole-like fitting hole on the front surface. A fitting portion that opens, a reference rib that protrudes from the inner peripheral surface of the fitting hole, and a plurality of pins for voltage electrodes that are arranged inside the fitting hole along the plug insertion / extraction direction 7. The terminal according to claim 1, further comprising: a terminal, and a pin terminal for a ground electrode arranged along the plug insertion / extraction direction outside the fitting hole in the fitting portion. Rack plug receptacle.

Images