JP2015128038A - Plug-type DC connector and DC connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make unnecessary a complicated harness process of inserting a fuse in the middle of a cable configuring a part of a power supply path, and to prevent incorrect connection of the cable with opposite polarity taken by mistake.SOLUTION: A housing 11 includes a plug-side incorrect fitting prevention part disposed on the outer surface thereof, including two openings 113 open in front and a protrusion part 114. A contact 13 is disposed inside the openings 113, and includes a connection part 131. A contact 14 is disposed behind the contact 13, and includes a connection part 141 for connecting to a conduction part 161 of the cable 16. A contact 15 is disposed inside the openings 113, and includes a connection part 151 and a connection part 154. A fuse 17 is accommodated in a housing 11 and connects between the contact 13 and the contact 14.

Description

  The present invention relates to a plug-type DC connector and a DC connector provided in a power supply path that supplies power to an electronic device from a power source.

  Currently, with regard to power supply to electronic devices such as servers, a power supply structure of a power supply path is known in which these electronic devices are mounted on a rack, and power is supplied to the electronic devices from a centralized power supply mounted on the rack via a bus bar.

  Patent Document 1 relates to a power supply structure for an electronic device. In the power supply structure for an electronic device in which an electronic device unit and a DC power supply unit are housed in a rack and power is supplied from the DC power supply unit to the electronic device unit. Housed in the center of the rack, the power supply path from the power supply output portion of the DC power supply unit to the power supply input portion of the electronic device unit is formed by a power supply bar, and the contact is urged by an elastic force by the connector The power supply bar and the power supply output unit and the power supply bar and the power supply input unit are electrically connected to each other.

  Therefore, in the power supply structure of the electronic device disclosed in Patent Document 1, most of the power supply path is a power supply that is a thick copper rod provided with a branch portion extending to the power supply input portion of the electronic device unit and the power supply output portion of the DC power supply unit. The impedance of the power supply path is supposed to be low because it is composed of bars and the DC power supply unit is housed in the center of the rack, which seems to be certain. However, it is necessary to specify the arrangement of the electronic device unit and the DC power supply unit, and further to configure the branch portion of the power supply bar according to the position of the former power input portion and the position of the latter power output portion. There is a problem of lacking.

Patent Document 2 relates to a server rack and a power supply method for the server rack. The former server rack is a server rack on which a plurality of servers are mounted, and is arranged at regular intervals between the plurality of servers. A plurality of centralized power supply units that supply power to the server; and a direct-current power cable that connects the server and the centralized power supply unit. The direct-current power cable connects each server and the centralized power supply unit to a predetermined unit. It was decided to connect within the distance range,
The latter server rack power supply method is a server rack power supply method in which a plurality of servers are mounted, and a centralized power supply unit is arranged at regular intervals between the plurality of servers, and each centralized power supply unit has at least one power supply. In the power supply method, power is supplied to the server, and the server and the centralized power supply unit are connected by a DC power cable within a predetermined distance range.

  The power supply method disclosed in Patent Document 2 has versatility because the central power supply unit and the server are connected using a DC power cable. In addition, in the power supply structure of the power supply path that supplies power using the DC power cable of Patent Document 2, it is essential to insert a fuse in the middle of these DC power cables because a large current flows through the power supply path. ing.

JP-A-10-224915 JP 2011-229281 A

  However, in Patent Document 2, there is a problem that harness processing is troublesome because a fuse is inserted in the middle of a cable, and there is a possibility that a cable is erroneously connected due to a wrong polarity.

  An object of the present invention is to provide a plug-type DC connector and a DC connector that eliminate the need for troublesome harness processing for inserting a fuse in the middle of a cable constituting a part of a power supply path, and prevent incorrect connection of a cable due to a change in polarity. Is to provide.

  The plug-type DC connector according to the present invention is a plug-type DC connector provided in a power supply path for supplying power to an electronic device from a power source, and has two openings that open to the front, and is misfitted with a mating connector. An insulating housing having a plug-side misfitting prevention portion on the outer surface for preventing the contact, and being fixed to the housing and disposed inside one of the two openings, the second connector of the mating connector A first plug-side contact having a first plug-side connecting portion connected to one other-side contact; and a first plug-side contact fixed to the housing and spaced apart from the first plug-side contact; A second plug-side contact provided with a cable connecting portion to be connected to the portion, and fixed to the housing and disposed in the other of the two openings, and the counterpart A third plug-side contact comprising a second plug-side connection connected to the second mating contact of the connector and a cable connection connected to the conductive portion of the cable; and received in the housing; And a fuse for connecting the first plug-side contact and the second plug-side contact.

  The DC connector according to the present invention comprises a socket and two plugs, each of the two plugs having a rod-shaped contact in two openings opened at the tip thereof, and the two plugs are mutually connected to each other. The socket has a unique shape that characterizes each, and the socket is connected to a harness side unit having two plug insertion openings for inserting the two plugs opened in a two-tiered state and a bus bar of the server rack Each of the harness side units comprises a bus bar side header, and each of the harness side units corresponds to a part of each of the two plug insertion ports so that only one or the other of the two plugs can be inserted. Forming a shape corresponding to the specific shape to be characterized, forming two cylindrical contacts that fit into the two rod-shaped contacts in each plug insertion port; and The rear end portion of the conductor connecting each of the two cylindrical contacts and the terminal portion of the bus bar side header protrudes from the joint surface with the bus bar side header, and further, the anode side cylindrical contact and the bus bar side header terminal A fuse is inserted in the middle of the conductor that joins the parts, on the other hand, the bus bar side header is configured with a slit for inserting the rear end part of each conductor on the joint surface with the harness side unit, and One end is brought into contact with the rear end portion of the conductor inserted into the slit, and the other end protrudes from the surface opposite to the joint surface to constitute a terminal portion serving as a connection portion connected to the bus bar.

  ADVANTAGE OF THE INVENTION According to this invention, while making the troublesome harness process which inserts a fuse in the middle of the cable which comprises a part of electric power feeding path unnecessary, it can prevent misconnecting a cable by changing polarity. it can.

FIG. 1 is a perspective view of a plug-type DC connector according to a first embodiment of the present invention. FIG. 2 is a plan view of the plug-type DC connector according to the first embodiment of the present invention. 3 is a cross-sectional view taken along line FF in FIG. 4 is a cross-sectional view taken along the line GG of FIG. 5 is a cross-sectional view taken along line HH in FIG. FIG. 6 is a perspective view of the socket type DC connector according to the first embodiment of the present invention. FIG. 7 is a plan view of the socket type DC connector according to the first embodiment of the present invention. 8 is a cross-sectional view taken along the line II of FIG. FIG. 9 is a perspective view of a state in which the socket type DC connector and the plug type DC connector according to the first embodiment of the present invention are fitted. 10 is a cross-sectional view taken along line EE of FIG. FIG. 11 is a diagram showing a configuration in which the socket type DC connector and the plug type DC connector are fitted in the second embodiment of the present invention, and FIG. 11A shows the socket type DC connector and the plug type DC connector. FIG. 11 (b) is a front view of a state in which a socket type DC connector and a plug type DC connector are engaged, and FIG. 11 (c) is a view of a socket type DC connector. It is a right view of the state which fitted the plug type DC connector. FIG. 12 is a view showing a configuration in which the socket type DC connector and the plug type DC connector are fitted in the second embodiment of the present invention, and FIG. 12 (a) shows the socket type DC connector and the plug type DC connector. FIG. 12B is a rear view of the state in which the DC connector is fitted, and FIG. 12B is a perspective view of the socket-type DC connector and the plug-type DC connector in a state in which the socket type DC connector and the plug-type DC connector are fitted. ) Is a cross-sectional view taken along line AA of FIG. FIG. 13: is the perspective view looked up from the back diagonally downward state of the state which the socket type DC connector and plug type DC connector in the 2nd Embodiment of this invention fitted. FIG. 14 is an exploded perspective view of the socket type DC connector according to the second embodiment of the present invention as viewed from diagonally upward to the right. FIG. 15 is an exploded perspective view of the socket type DC connector according to the second embodiment of the present invention as seen from diagonally downward to the right. FIG. 16 is a diagram showing a configuration of a socket type DC connector according to a second embodiment of the present invention, FIG. 16 (a) is a front view of the socket type DC connector, and FIG. 16 (b) is a socket type DC connector. FIG. 16C is a plan view of the DC connector, FIG. 16C is a bottom view of the socket type DC connector, and FIG. 16D is a right side view of the socket type DC connector. FIG. 17 is a view showing a configuration of a socket type DC connector according to the second embodiment of the present invention. FIG. 17 (a) is a cross-sectional view taken along the line BB of FIG. 16 (a), and FIG. ) Is a rear view of the socket type DC connector, FIG. 17 (c) is a perspective view looking down from the upper right side of the socket type DC connector, and FIG. 17 (d) is looking up from the lower right side of the socket type DC connector. It is a perspective view. FIG. 18 is a diagram showing a configuration of a plug-type DC connector that is inserted into a plug insertion port above the socket-type DC connector according to the second embodiment of the present invention. FIG. 18 (a) shows the plug-type DC connector. 18 (b) is a plan view of the plug type DC connector, FIG. 18 (c) is a rear view of the plug type DC connector, and FIG. 18 (d) is a right side view of the plug type DC connector. FIG. 18 (e) is a bottom view of the plug type DC connector, and FIG. 18 (f) is a left side view of the plug type DC connector. FIG. 19 is a diagram showing a configuration of a plug-type DC connector that is inserted into a plug insertion port above the socket-type DC connector according to the second embodiment of the present invention. FIG. FIG. 19B is a perspective view looking down from the upper right side of the plug type DC connector, and FIG. 19C is a perspective view looking up from the lower right side of the plug type DC connector. It is. FIG. 20 is a diagram illustrating a configuration of a plug type DC connector that is inserted into a plug insertion port below the socket type DC connector according to the second embodiment of the present invention. FIG. Fig. 20 (b) is a rear view of the plug type DC connector, and Fig. 20 (c) is a left side view of the plug type connector. 20 (d) is a right side view of the plug type DC connector, FIG. 20 (e) is a plan view of the plug type DC connector, and FIG. 20 (f) is a bottom view of the plug type DC connector. FIG. 21 is a diagram showing a configuration of a plug-type DC connector that is inserted into a plug insertion port below the socket-type DC connector according to the second embodiment of the present invention. FIG. ) Cross-sectional view taken along the line DD (when the socket is inserted into the plug insertion port, it is turned upside down), FIG. 21 (b) is a perspective view looking down from the upper right side of the plug type DC connector, FIG. c) is a perspective view of the plug-type DC connector as viewed from the lower right side.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

(First embodiment)
The configuration of the plug-type DC connectors 10a and 10b according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  The plug-type DC connectors 10 a and 10 b include a housing 11, a cover 12, a contact 13, a contact 14, a contact 15, and a fuse 17. Since the plug type DC connector 10a and the plug type DC connector 10b have the same configuration, the configuration of the plug type DC connector 10a will be described in detail, and the detailed description of the configuration of the plug type DC connector 10b will be omitted.

  The housing 11 has two openings 113 that open forward (leftward in FIG. 2). The housing 11 has a projecting portion 114 projecting forward, and by providing the projecting portion 114, the front surface which is the outer surface has an uneven shape. By providing this concave and convex shape on the front surface of the housing 11, an erroneous fitting preventing portion for preventing erroneous fitting with a socket type DC connector 20 described later is formed. Locking portions 111 integral with the housing 11 are provided on the left and right side surfaces of the housing 11. The lock portion 111 extends rearward in a cantilevered manner from the left and right side surfaces of the housing 11, and can be elastically deformed with a connection portion 117 connected to the left and right side surfaces of the housing 11 as a fulcrum. The locking portion 111 is formed with a locking claw 112 that protrudes outward in the left and right directions. The housing 11 has a storage portion 115 that stores therein the connection portion 134 of the contact 13, the contact 14, the contact 15, and the fuse 17. A housing opening 116 is formed on the upper surface of the housing 11 to open the interior of the housing 115 to the outside. The housing 11 is made of an insulating material.

  The cover 12 has a plate shape, and is fixed to the housing 11 with screws 18 so as to cover an upper portion of the housing portion 115 of the housing 11. The cover 12 is formed with a communication hole 121 that penetrates in the thickness direction and communicates the outside with the storage portion 115. The width W1 in the left-right direction (vertical direction in FIG. 2) at both ends in the front-rear direction (left-right direction in FIG. 2) of the communication hole 121 is slightly wider than the width in the left-right direction of the fuse 17, and the fuse 17 is inserted. It will be a guide when you do. Concave portions 124 a and 124 b communicating with the communication hole 121 are provided on the left and right sides of the communication hole 121. The width W2 between the end of the recess 124a facing the communication hole 121 and the end of the recess 124b facing the communication hole 121 is wider than the width W1 of the communication hole 121 in the left-right direction (W2). > W1). The communication hole 121 exposes the connection portion 134 of the contact 13 and the connection portion 141 of the contact 14 to the outside when the fuse 17 is not accommodated in the housing 11.

The contact 13 is made of a conductive material, and has a connecting portion 131 formed in a cylindrical shape, a connecting piece 132 provided on the connecting portion 131 and bent inward, and a connecting piece 132 at the connecting portion 131. The connecting piece 133 is provided rearward and bent inward, and the connecting portion 134 extends rearward from the connecting portion 131. The connecting portion 131 is disposed in the opening 113 of the housing 11. As shown in FIG. 3, the connection portion 134 has contact pieces 134 a facing each other formed by bending upward from the left and right sides of the bottom surface portion and bending the upper end in a U shape inside as seen from the rear. doing. The distance between the contact pieces 134 a facing each other is smaller than the width in the thickness direction of the electrode 171 a of the fuse 17. When the electrode 171a of the fuse 17 is inserted, the opposing contact piece 134a is connected to the electrode 171a by elastically contacting the electrode 171a by pressing and holding the electrode 171a of the fuse 17 by its own elastic restoring force. To do.

  The contact 14 is made of a conductive material, and is disposed behind the contact 13 so as to be separated from the contact 13. The contact 14 has a connection part 141 connected to the electrode 171 b of the fuse 17 and a connection part 142 connected to the conductive part 161 of the cable 16. Although not shown, the connection portion 141 is folded upward from the left and right sides of the bottom surface portion as viewed from the rear, and is opposed to each other formed by bending the upper end inwardly in a U shape. It has a contact piece 141a. The distance between the contact pieces 141 a facing each other is smaller than the width in the thickness direction of the electrode 171 b of the fuse 17. The opposing contact pieces 141a are connected to the electrode 171b by elastically contacting the electrode 171b while pressing and holding the electrode 171b of the fuse 17 by its own elastic force. The contact 14 is connected to the anode of the power supply via the conductive portion 161 of the cable 16. The cable 16 connected to the contact 14 is for the anode, and the color of the insulating part 162 covering the conductive part 161 is red.

  The contact 15 is made of a conductive material, and has a connection portion 151 formed in a cylindrical shape, a connection piece 152 provided on the connection portion 151 and bent inward, and a connection piece 152 at the connection portion 151. And a connection piece 153 that is provided rearward and bent inward, and a connection portion 154 that extends rearward from the connection portion 151. The connection part 154 is connected to the conductive part 161 of the cable 16. The contact 15 is connected to the cathode of the power supply via the conductive portion 161 of the cable 16. The cable 16 connected to the contact 15 is for the cathode, and the color of the insulating part 162 covering the conductive part 161 is black.

  The fuse 17 has two electrodes 171a and 171b. The fuse 17 passes through the communication hole 121 of the cover 12 and is stored in the storage portion 115 of the housing 11. The fuse 17 has an upper end protruding upward from the communication hole 121 in a state of being housed in the housing 11 (see FIG. 3). The electrode 171a is connected to the connection part 134 of the contact 13 by elastic contact with the contact piece 134a. The electrode 171b is connected to the connection portion 141 of the contact 14 by elastic contact with the contact piece 141a.

  The configuration of the socket type DC connector 20 according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  The socket type DC connector 20 includes a housing 21, a contact 23a, and a contact 23b. In the present embodiment, the socket type DC connector 20 and the plug type DC connector 10a or the plug type DC connector 10b constitute a DC connector 4. The socket type DC connector 20 is a mating connector of the plug type DC connectors 10a and 10b.

The housing 21 has plug insertion openings 211a and 211b that are opened forward (downward in FIG. 7) for inserting the plug-type DC connectors 10a and 10b. The plug insertion ports 211a and 211b have a projection 215 projecting forward from the recess 216, a recess 216 recessed rearward from the projection 215, and a connecting portion for connecting the projection 215 and the recess 216 to the rear of the plug insertion ports 211a and 211b. 217 are formed. The housing 21 is formed with an engaging portion 220 that protrudes downward at the front end of the upper surface, and a groove portion 222 that extends rearward from the engaging portion 220. The housing 21 is formed with an engaging portion 221 that protrudes upward at the front end of the lower surface, and a groove portion 223 that extends rearward from the engaging portion 221. The protrusion 215 is formed with a through hole 218 penetrating in the front-rear direction. A contact 23 b is inserted into the through hole 218. A through hole 219 penetrating in the front-rear direction is formed in the recess 216. A contact 23 a is inserted into the through hole 219. The housing 21 has a fixed portion 212 and a fixed portion 213 that protrude laterally. A through hole 214 is formed in the fixed portion 212 so as to penetrate in the vertical direction. A through hole 224 that penetrates in the vertical direction is formed in the fixing portion 213. The fixing part 212 and the fixing part 213 are fixed to a bus bar (not shown). The housing 21 is made of an insulating material.

  The contact 23a includes a connecting portion 231a, a terminal portion 232a, a locking claw 234a, and a locking portion 235a, and is formed of a conductive material. The connection portion 231a has a rod shape and is disposed in the plug insertion ports 211a and 211b. The locking claw 234a is locked to the front surface of the recess 216 of the housing 21 to prevent the contact 23a from coming out backward. The locking portion 235a engages with the rear surface of the recess 216 of the housing 21 to prevent the contact 23a from being pulled forward. The terminal portion 232a protrudes from the rear wall of the housing 21 to the outside rear, has a through hole 233a penetrating in the plate thickness direction, and is connected to a bus bar (not shown).

  The contact 23b includes a connection portion 231b, a terminal portion 232b, a locking claw 234b, and a locking portion 235b, and is formed of a conductive material. The connecting portion 231b has a rod shape and is disposed in the plug insertion ports 211a and 211b. The locking claw 234b is locked to the front surface of the projecting portion 215 of the housing 21 to prevent the contact 23b from coming out rearward. The locking portion 235b engages with the rear surface of the protruding portion 215 of the housing 21 to prevent the contact 23b from coming out forward. The terminal portion 232b protrudes from the rear wall of the housing 21 to the outside and has a through hole 233b that penetrates in the plate thickness direction, and is connected to a bus bar (not shown). The contact 23b has the same shape as the contact 23a.

  In the socket type DC connector 20 having the above configuration, screws (not shown) are inserted into the through holes 233a of the terminal portions 232a of the contacts 23a and the through holes 215 of the fixing portions 213, and the contacts 23a and the fixing portions 213 are fixed to the bus bar. A screw (not shown) is inserted into the through hole 233b of the terminal portion 232b of the contact 23b and the through hole 214 of the fixing portion 212, and the contact 23b and the fixing portion 212 are fixed to the bus bar. At this time, the terminal portion 232a and the terminal portion 232b are electrically connected to the bus bar.

  The plug type DC connector 10a is assembled as described below.

  First, the contact 13 is inserted into the storage portion 115 from the storage opening 116 of the housing 11 with the connecting portion 131 facing forward, and then the contact 13 is moved forward to move the contact 13. The connecting part 131 is positioned in the opening 113.

  Next, the contact 14 in which the conductive portion 161 of the cable 16 is connected and fixed in advance to the connection portion 142 and the contact 15 in which the conductive portion 161 of the cable 16 is connected and fixed in advance to the connection portion 154 are connected to the housing. 11 from the storage opening 116 into the storage unit 115 from above and stored in the storage unit 115. The contact 13, the contact 14 and the contact 15 are each provided with a locking piece (not shown). By engaging this locking piece with the inner wall portion of the housing 11, each of the contact 13, the contact 14 and the contact 15 is a housing. 11 is fixed.

  Next, the cover 12 is fixed to the housing 11 with screws 18 in a state where the cover opening portion 116 of the housing 11 is covered. Accordingly, the contact 13 and the contact 15 are pressed against the inner bottom surface of the housing portion 115 of the housing 11 by the protruding piece 122 of the cover 12, and the contact 14 is pressed by the protruding piece 123 of the cover 12. When pressed by the inner bottom surface, movement of the contact 13, contact 14 and contact 15 in the storage portion 115 is prevented.

  Next, using the communication hole 121 of the cover 12 as an insertion guide, the fuse 17 is inserted through the communication hole 121 from above, and the fuse 17 is stored in the storage portion 115 of the housing 11. At this time, the electrode 171a of the fuse 17 is inserted while pushing the contact piece 134a of the left and right connection part 134 of the contact 13 sideways against the elastic force of the contact piece 134a, thereby extending the contact piece 134a. Elastic contact with. The electrodes 171b of the fuse 17 are inserted while pushing the contact pieces 141a of the left and right connection portions 141 of the contacts 14 sideways against the elastic force of the contact pieces 141a. Elastic contact. As a result, the contact 13 and the electrode 171a are connected well, the contact 14 and the electrode 171b are connected well, and the electrode 171a is pressed and held by the contact piece 134a by the elastic restoring force of the contact piece 134a. The electrode 171b is pressed against the contact piece 141a by the elastic restoring force of the contact piece 141a, and the fuse 17 is difficult to be pulled upward.

  Since the fuse 17 is housed in the housing portion 115 of the housing 11 using the communication hole 121 as an insertion guide, the fuse 17 can be easily inserted into the housing portion 115 of the housing 11. Further, since the contact piece 134a and the contact piece 141a are exposed to the outside from the communication hole 121, the fuse 17 is positioned when the electrode 171a of the fuse 17 and the contact piece 134a are connected, and the electrode 171b and the contact piece 141a of the fuse 17 are connected. Positioning of the fuse 17 at the time of connection with can be performed reliably.

  In the plug-type DC connector 10a assembled as described above, when replacing the fuse 17, a finger is inserted into the recesses 124a and 124b, and the fuse 17 is pulled upward. At this time, the electrode 171a and the contact piece 134a of the fuse 17 and the electrode 171b and the contact piece 141a of the fuse 17 are not easily pulled upward due to the elastic restoring force of the contact piece 134a and the contact piece 141a. Therefore, the fuse 17 can be removed relatively easily by applying a slightly stronger force and pulling the fuse 17 upward. Since the upper end of the fuse 17 protrudes upward from the communication hole 121, the fuse 17 can be easily pulled upward by pinching the protruding portion.

  Then, using the communication hole 121 of the cover 12 as an insertion guide, the new fuse 17 is inserted into the communication hole 121 from above and penetrated, and stored in the storage portion 115 of the housing 11.

  When the plug type DC connectors 10a and 10b assembled as described above and the socket type DC connector 20 are connected, as shown in FIGS. 9 and 10, the plug type DC connector 10a is connected to the plug insertion slot 211a. The plug type DC connector 10b is inserted into the plug insertion slot 211b.

In the process of inserting the plug-type DC connectors 10a and 10b into the plug insertion ports 211a and 211b, the lock part 111 is pressed inward by the engagement part 220 and the engagement part 221 to cause the lock part 111 to connect the connection part 117. Elastically deforms inward at the fulcrum. Then, when the rear end of the locking claw 112 passes through the rear ends of the engaging portion 220 and the engaging portion 221, the lock portion 111 returns to its original state by its own elastic return force, and the rear end of the locking claw 112 Comes into contact with the rear ends of the engaging portions 220 and 221 of the socket type DC connector 20, and the plug type DC connectors 10a and 10b and the socket type DC connector 20 are fitted. Thereby, the contact 13 and the contact 14 of the plug type DC connector 10 a are connected to the contact 23 a of the socket type DC connector 20, and the contact 15 of the plug type DC connector 10 b is connected to the contact 23 b of the socket type DC connector 20. In addition, a power source and an electronic device (not shown) are connected via the plug type DC connectors 10a and 10b, the socket type DC connector 20, and a bus bar, and power is supplied from the power source to the electronic device.

  Here, a protrusion 114 is provided on the front surface of the housing 11 of the plug-type DC connector 10a, 10b, and an uneven shape corresponding to the protrusion 215 and the recess 216 of the housing 21 of the socket-type DC connector 20 is formed on the front surface of the housing 11. By providing the plug-type DC connectors 10a, 10b upside down, when the plug-type DC connectors 10a, 10b are inserted into the plug insertion ports 211a, 211b, the plug-type DC connectors 10a, 10b protrude before the contact 15 and the contact 23a are connected. The part 114 comes into contact with the protruding part 215 of the socket type DC connector 20 and cannot be inserted any more. Thereby, the incorrect fitting with plug type DC connector 10a, 10b and socket type DC connector 20 can be prevented. In particular, when the contact 13 and the contact 14 are connected to the anode of the power source and the contact 15 is connected to the cathode of the power source, the polarities of the plug-type DC connectors 10a and 10b are mistakenly reversed and the polarity is reversed. Even if the plug-type DC connectors 10a and 10b are inserted into the plug insertion ports 211a and 211b, erroneous connection can be prevented. Further, the insulation portion 162 of the cable 16 for anode connected to the contact 14 is made red, and the insulation portion 162 of the cable 16 for cathode connected to the contact 15 is made black, whereby the insulation portion of the cable 16 is made. The plug type DC connectors 10a and 10b can be prevented from being erroneously connected to the socket type DC connector 20 by looking at the color 162.

  When the plug type DC connectors 10a and 10b are pulled out from the plug insertion ports 211a and 211b of the socket type DC connector 20, the locking claw 112 and the engaging portions 220 and 221 Release the engagement. By pulling out the plug-type DC connectors 10a and 10b in this state, the connection between the contact 13 and the contact 14 and the contact 23a is released, and the connection between the contact 15 and the contact 23b is released. As a result, the connection between the electronic device and the power source is disconnected, and power supply from the power source to the electronic device is stopped.

  As described above, according to the present embodiment, the fuses 17 are provided in the plug-type DC connectors 10a and 10b, so that troublesome harness processing for inserting the fuse in the middle of the cable constituting a part of the power supply path is unnecessary. be able to.

  In addition, according to the present embodiment, since the plug insertion ports 211a and 211b of the socket type DC connector are arranged so as to be opened adjacent to each other in the front, the overall size is reduced and the size can be reduced.

  In the present embodiment, two plug insertion ports are provided in the socket type DC connector, but one or more than three may be provided. When one plug insertion port is provided, the size can be further reduced. In addition, when three or more plug insertion ports are provided, power can be supplied from a plurality of power sources to the electronic device by providing the socket type DC connector in the electronic device.

  In this embodiment, in the plug type DC connector, the fuse is provided between the contacts connected to the anode of the power supply. However, the fuse may be provided between the contacts connected to the cathode of the power supply. In this case, the contact connected to the cathode of the power source of the plug type DC connector is divided into two, that is, the contact connected to the contact of the socket type DC connector and the contact connected to the cable, and a fuse is formed between the divided contacts. Connect with.

(Second Embodiment)
The configuration of the DC connector according to the second embodiment of the present invention will be described in detail.

  11 and 12, the DC connector of the present embodiment includes a socket 1 and two plugs 2a and 2b. As shown in FIGS. 18 to 21, the two plugs 2a and 2b are Conductive rod-shaped contacts 2ar, 2ar, 2br, 2br are arranged in each of the two openings 2am, 2am, 2bm, 2bm each opened at the tip, and the two plugs 2a, 2b are mutually connected to the upper surface or Key grooves 2ak and 2bk that characterize each are formed on the lower surface, and on the other hand, as shown in FIGS. 11 to 17, the socket 1 is used to insert the two plugs 2a and 2b opened in a two-tiered state. The upper and lower two-stage plug insertion openings 1am and 1bm are open to a harness side unit 1a and a bus bar side header 1b connected to a bus bar of a server rack (not shown). The DC connector of the present embodiment is provided in a power supply path that supplies power to an electronic device from a power source. The socket 1 is a socket type DC connector, and the plug 2a and the plug 2b are plug type DC connectors.

  As shown in FIG. 12 (b), the plug 2a is inserted into the upper plug insertion port 1am of the upper and lower plug insertion ports 1am and 1bm of the harness side unit 1a of the socket 1, As shown in FIGS. 18 and 19, the housing 2ah has a substantially thin rectangular parallelepiped shape and each of the constituent elements formed in the housing 2ah. The openings 2am and 2am are as shown in FIGS. 18 (a) and 19 (b). Further, the keyway 2ak is a groove-shaped part formed on the upper surface side of the housing 2ah.

  As shown in FIGS. 18 (a) and 19 (b), two openings 2am and 2am are arranged side by side in front of the housing 2ah of the plug 2a, and as shown in FIG. A cylindrical cavity extending rearward along the length direction, and the rod-shaped contacts 2ar, 2ar are directed forward along the axis from the innermost part of the openings 2am, 2am. It is arranged in an extended state. The rod-like contacts 2ar and 2ar are rod-like in appearance, but the inside is constituted by a hollow cylindrical member, and the tip of the openings 2am and 2am has the opening 2am, It shall be located in a position slightly retracted from the tip of 2am. Further, as shown in FIG. 19 (a), the rod-shaped contacts 2ar and 2ar are coupled at their rear ends to the ends of the cables 2ac and 2ac drawn from the rear end into the housing 2ah of the plug 2a, respectively. Connect to. The cables 2ac and 2ac are for the anode, and the coating is red.

  As shown in FIGS. 18 (a) to 18 (c) and FIGS. 19 (a) and 19 (b), the key groove 2ak has two protrusions at the front left side when viewed from the front of the upper surface of the housing 2ah. The strip is formed by protruding along the length direction of the housing 2ah with a width slightly exceeding the key width. Further, as shown in FIGS. 18 (a), (e) and FIGS. 19 (b), (c), the housing 2ah has a length of the housing 2ah at the position of the center front as viewed from the front of the lower surface. A concave groove 2ag is formed along the direction. The concave groove 2ag is configured by deleting the portion of the housing 2ah.

Of the plugs 2a and 2b, the other plug 2b is a lower plug of the upper and lower plug insertion ports 1am and 1bm of the harness side unit 1a of the socket 1, as shown in FIG. 20 and 21, as shown in FIGS. 20 and 21, the plug 2a is formed of a thin rectangular parallelepiped housing 2bh and components constituting the same, and the openings 2bm and 2bm As shown in FIGS. 20 (a) and 21 (b), it is a cavity opened side by side at the front end of the housing 2bh, and the key groove 2bk is configured on the right side of the upper surface in a front view of the housing 2bh. It is a thing. The plug 2b is inserted into the lower plug insertion port 1bm of the harness side unit 1a of the socket 1 in an inverted state.

  As shown in FIGS. 20 (a) and 21 (b), two openings 2bm and 2bm are arranged side by side in front of the housing 2bh of the plug 2b, and as shown in FIG. It is a cylindrical hollow portion extending rearward along the length direction, and the rod-shaped contacts 2br and 2br are directed forward from the innermost portions of the openings 2bm and 2bm along the axial center thereof. It is an extension. The rod-like contacts 2br and 2br are rod-like in appearance, but are constituted by a cylindrical member having a hollow inside, and the tip of the openings 2bm and 2bm is the opening 2bm. It is assumed to be located at a position slightly retracted from the tip of 2 bm. Further, as shown in FIG. 21 (a), the rod-like contacts 2br and 2br are coupled at their rear ends to the tips of the cables 2bc and 2bc drawn from the rear end into the housing 2bh of the plug 2b, respectively. Connect each other electrically. Note that these cables 2bc and 2bc are for the cathode, and in this embodiment, the coating is colored black.

  As shown in FIGS. 20 (a), (b), (e) and FIG. 21 (b), the key groove 2bk has two protrusions at the right front portion as viewed from the front of the upper surface of the housing 2bh. The strip is configured by being arranged along the length direction of the housing 2bh with a width slightly exceeding the key width. Further, as shown in FIGS. 20 (a), (f) and FIGS. 21 (b), (c), the housing 2bh has a length of the housing 2bh at the position of the center front portion when viewed from the front of the lower surface. A concave groove 2bg is formed along the direction. The concave groove 2bg is configured by deleting the portion of the housing 2bh.

  As shown in FIGS. 11 to 15, the socket 1 includes a harness side unit 1 a and a bus bar side header 1 b that is bonded and fixed to the lower surface thereof.

  Further, as shown in FIGS. 11, 14, 16, and 17, the harness-side unit 1a includes a substantially rectangular parallelepiped housing 1ah that is generally square and long in the depth direction when viewed from the front, and a configuration that is configured or arranged in the housing 1ah. It consists of elements. As shown in FIGS. 14 and 15 in particular, the housing 1ah has a configuration in which the rear upper part is opened, and the rear upper part of the housing 1ah is covered with a lid 1al. When the lid body 1al is disposed at the position to close the position, the lid body 1al is fixed at the position by locking means on both sides (not shown). As shown in FIG. 14, the lid body 1al is formed with two quadrangular cutout openings 1alh and 1alh arranged in parallel at the substantially central portion thereof, as shown in FIG. In addition, it can be closed with small lids 1asl and 1asl, respectively. The small lids 1asl and 1asl are provided with side pieces depending on both sides thereof, and return pieces are arranged on the outer surface side thereof. When the cutout openings 1alh and 1alh are closed by the small lids 1asl and 1asl, Enters below the side edges of the cutout openings 1alh, 1alh, and the return piece is locked to the edge of the side edge to prevent it from coming off.

  The two notch openings 1alh, 1alh opened in the lid 1al are located immediately above the fuses 3, 3 arranged in the fuse arrangement portion at the corresponding position of the housing 1ah, and the small lids 1asl, 1asl are necessary. Accordingly, the cutout openings 1alh and 1alh are opened and the fuses 3 and 3 can be exchanged.

  As shown in FIGS. 14, 16 (a) and 17 (c), the plug insertion openings 1am and 1bm are basically opened in a two-step state on the front surface of the housing 1ah which is formed in a substantially square shape. It is a horizontally long rectangular opening in front view.

As described above, the upper plug insertion port 1am is an opening for inserting and electrically connecting the upper plug 2a. As shown in FIGS. 16 (a) and 17 (c), On the upper right inner surface, a key ridge 1ap that fits into a key groove 2ak formed on the right upper surface in the insertion direction of the plug 2a is configured to protrude downward, and the lower center inner surface The center ridge 1aj is formed so as to be fitted in the groove 2ag formed at the center of the lower surface of the plug 2a in the direction of insertion. Both the key protrusion 1ap and the central protrusion 1aj are configured to be long along the length direction of the plug insertion opening 1am. Each length of the key protrusion 1ap corresponds to the length of the key groove 2ak, and the center protrusion 1aj corresponds to the length of the concave groove 2ag.

  Furthermore, when the plug 2a is inserted into the plug insertion slot 1am, as shown in FIGS. 12 (c), 14, 16 (a) and 17 (a), (c), In order to fit into the rod-shaped contacts 2ar and 2ar projecting from the uppermost portions of the two opening portions 2am and 2am which are opened side by side in the front, the conductive state is projected from the uppermost portion in a corresponding positional relationship. The cylindrical contacts 1ac, 1ac are configured. The cylindrical contacts 1ac and 1ac are made of a cylindrical conductive metal member, and as shown in FIGS. 12 (c) and 17 (a), a holding spring is bulged and inserted. It plays a role of holding the rod-shaped contacts 2ar and 2ar of the plug 2a, and at the same time ensures a reliable electrical connection.

  In addition, as shown in FIGS. 12 (c) and 17 (a), the harness-side unit 1a has the fuse arrangement portion behind each of the cylindrical contacts 1ac and 1ac. Fuses 3 and 3 are arranged in the fuse arrangement portion. Front band-like conductors 3afc and 3afc are arranged between the front end side of these fuse arrangement portions and the rear ends of the cylindrical contacts 1ac and 1ac, and thereby the rear ends of the cylindrical contacts 1ac and 1ac. Are electrically connected to the front end sides of the fuses 3 and 3 inserted and arranged in the fuse arrangement portion. The front strip conductors 3afc and 3afc are connected to the front end of the fuse arrangement part behind the cylindrical contacts 1ac and 1ac through the upper surface of the open part of the rear part of the harness side unit 1a as shown in FIG. It extends to the side.

  As shown in FIGS. 12 (c) and 17 (a), the rear end side of the fuse arrangement portion is further connected to the front ends of the rear strip conductors 3arc and 3arc that extend rearward and bend downward at a right angle at the rear end. doing. The portion of the rear strip conductors 3arc, 3arc extending from the rear end side of the fuse arrangement portion to the position bent downward at a right angle extends through the upper surface of the open portion of the rear portion of the harness side unit 1a. The upper surface side is restrained by the restraining lid 1al. The rear end sides of the fuses 3 and 3 are electrically connected to the rear strip conductors 3arc and 3arc, and an electric circuit is formed behind them. The lower band conductors 3arc and 3arc have lower end portions (rear end portions of the conductor) projecting from the lower rear end portion of the housing 1ah of the harness side unit 1a, and the anode side terminal portions 1bat and 1bat of the bus bar side header 1b. It functions as a connecting terminal that is in contact with the upper end.

  As described above, the lower plug insertion port 1bm is an opening for inserting and electrically connecting the lower plug 2b, as shown in FIGS. 14, 16 (a) and 17 (c). As shown in the figure, the lower right inner surface of the plug 2b has a key protrusion 1bp that is fitted in a key groove 2bk formed on the right lower surface in the insertion direction, and is configured to protrude upward. A central protrusion 1bj is formed on the inner surface of the upper center so as to be fitted into a groove 2bg formed in the center of the upper surface of the plug 2b in the direction of insertion. The configuration of the key ridge 1bp is the same as the key ridge 1ap of the plug insertion port 1am except for the positional relationship, and the central ridge 1bj of the plug insertion port 1am of the plug insertion port 1am is excluded except for the positional relationship. This is the same as the central protrusion 1aj.

Furthermore, when the plug 2b is inserted into the plug insertion port 1bm, as shown in FIGS. 12 (c), 14, 16 (a) and 17 (a), (c), In order to fit into the rod-shaped contacts 2br and 2br projecting from the outermost portions of the two openings 2bm and 2bm opened side by side in front of the plug 2b, the plug 2b is projected from the uppermost portion in a corresponding positional relationship. The conductive cylindrical contacts 1bc and 1bc are configured. The cylindrical contacts 1bc and 1bc have the same configuration as the cylindrical contacts 1ac and 1ac, and a holding spring is bulged therein as shown in FIGS. It plays the role of holding the rod-shaped contacts 2br and 2br of the inserted plug 2b, and at the same time ensures a reliable electrical connection.

  Also, as shown in FIGS. 12 (c) and 17 (a), the front ends of the other front strip conductors 3bfc and 3bfc are connected to the rear ends of the cylindrical contacts 1bc and 1bc, and these are connected to the housing 1ah. The rear ends are extended halfway toward the rear, and the rear ends thereof are similarly connected to the upper ends of the other rear strip conductors 3brc and 3brc. These rear belt-like conductors 3brc are arranged in a suspended state side by side in the housing 1ah of the harness side unit 1a, and the lower end portion (the rear end portion of the conductor) projects from the lower surface of the housing 1ah of the harness side unit 1a. The terminal portion 1bbt on the cathode side of the bus bar-side header 1b functions as a connection terminal that is in contact with the upper end of the 1bbt.

  12 (a), (c), FIG. 15, FIG. 16 (c), (d) and FIGS. 17 (a), (b), (d), the housing of the harness side unit 1a is provided. The rear belt-like conductors 3arc and 3arc bent and suspended at the rear end of 1ah are arranged with their surfaces set in a direction perpendicular to the depth direction of the housing 1ah, and also suspended before the rear of the housing 1ah. The rear belt-like conductors 3brc and 3brc arranged in a state are arranged with their surfaces oriented in the direction along the depth direction of the housing 1ah.

  As shown in FIGS. 11 (b), 11 (c), 12, 13, 14 and 15, the bus bar side header 1b basically has a planar shape that is a housing 1ah of the harness side unit 1a. This is a generally bowl-shaped plate-like member that lacks a part of the front side of it and both sides in the length direction. Brackets 1bb and 1bb are projected on both sides closer to the front part than the lacked part of the side part. When the upper surface of the bus bar side header 1b is joined to the lower surface of the housing 1ah of the harness side unit 1a, the brackets 1bb and 1bb are in contact with the brackets 1ab and 1ab projecting on both sides of the lower portion of the housing 1ah. They are positioned so that they are in contact. Brackets 1bb and 1bb of the bus bar side header 1b are formed with female screws to be screwed into the bolts b and b, and brackets 1ab and 1ab of the housing 1ah of the harness side unit 1a are provided with the bolts b and b. Bolt holes that penetrate the spiral shaft portion are formed, and the harness side unit is formed by screwing the bolts b and b inserted from the bolt holes of the latter brackets 1ab and 1ab into the female screws of the former brackets 1bb and 1bb. The joining state of the upper surface of the bus bar side header 1b to the lower surface of 1a can be fixed.

  As shown in FIGS. 13 and 15, the bus bar side header 1b is provided with the terminal portions 1bat and 1bat on the anode side exposed on the lower surface side at the rearmost portion thereof. The cathode side terminal portions 1bbt and 1bbt which are exposed to the surface are arranged. As shown in FIG. 12C and FIGS. 13 to 15, the terminal portions 1 bat and 1 bat on the rearmost anode side are slits 1 bys and 1 bys that open on the upper surface (joining surface) to be joined to the lower surface of the harness side unit 1 a. As described above, the lower end is exposed to the lower surface of the bus bar side header 1b and constitutes a connecting portion bent rearward at the boundary with the lower surface. The cathode-side terminal portions 1bbt and 1bbt are slightly forward of the anode-side terminal portions 1bat and 1bat, and the slits 1bis and 1bis open at the upper surface (joint surface) where the upper end is joined to the lower surface of the harness-side unit 1a. As described above, the lower end is exposed to the lower surface of the bus bar-side header 1b and constitutes a connecting portion bent outward at the boundary with the lower surface.

  As shown in FIG. 14, the slits 1bys and 1bys in which the upper ends of the terminal portions 1bat and 1bat on the anode side are located are configured to be orthogonal to the length direction of the bus bar side header 1b, and the slit 1bis on the cathode side is formed. 1 bis is configured in a direction along the length direction.

  As shown in FIG. 12 (c), when the upper surface of the bus bar side header 1b is joined to the lower surface of the housing 1ah of the harness side unit 1a, the fuse 3 hanging from the rear lower surface of the housing 1ah of the harness side unit 1a, 3, the lower end portions of the rear strip conductors 3 arc and 3 arc connected to 3 are inserted and fitted into the slits 1 bys and 1 bys on the rear side of the bus bar header 1 b, and the upper cylindrical contacts 1 ac and 1 ac are connected to the front strip conductors It is electrically connected to the terminal portions 1bat, 1bat on the anode side through 3afc, 3afc, fuses 3, 3, and rear strip conductors 3arc, 3arc. At the same time, the lower ends of the rear strip conductors 3brc and 3brc hanging from both sides of the harness 1a in the front-rear direction of the housing 1ah are inserted into the slits 1bis and 1bis on both sides of the bus bar header 1b. Then, the lower cylindrical contacts 1bc and 1bc are electrically connected to the cathode-side terminal portions 1bbt and 1bbt via the front strip conductors 3bfc and 3bfc and the rear strip conductors 3brc and 3brc. .

  The anode side terminal portions 1bat and 1bat have a coupling hole opened at the lower end of the bus bar side header 1b, and the portions of the terminal portions 1bat and 1bat are illustrated using this. Not connect to the anode side bus bar. The same applies to the cathode-side terminal portions 1bbt and 1bbt, and a coupling hole is opened in a portion exposed at the lower end of the bus bar-side header 1b, and the cathode-side terminal portions 1bbt and 1bbt are utilized by using this. This portion can be connected to a cathode-side bus bar (not shown). Thus, the socket 1 of this DC connector can be electrically and mechanically connected to the bus bar.

  Therefore, according to the DC connector of this embodiment, a server rack for a data center equipped with a bus bar is mounted with a centralized power supply unit in the vicinity of the center and a plurality of servers in other parts. In the case of a configuration for supplying power to the server, one end of the anode side cables 2ac and 2ac extending from the server rack is connected to the rear end of the rod-like contacts 2ar and 2ar of the upper plug 2a, and the cathode side cable 2bc. One end of 2bc is connected to the rear end of the rod-like contact 2br, 2br of the lower plug 2b, and the bus bar side header 1b of the socket 1 is utilized using terminal portions 1bat, 1bat, 1bbt, 1bbt projecting from the lower surface thereof. And can be connected and fixed to the bus bars on the anode side and cathode side.

  In this case, the plug 2a on the anode side and the plug 2b on the cathode side are different from each other in the positions of the key grooves 2ak and 2bk and the positions of the concave grooves 2ag and 2bg arranged in the respective housings 2ah and 2bh. Of the plugs 2a and 2b corresponding to the key ridges 1ap and 1bp and the central ridges 1aj and 1bj in the upper plug insertion port 1am and the lower plug insertion port 1bm opened in the housing 1ah of the one harness side unit 1a, respectively. The anode-side plug 2a can be inserted only into the upper plug insertion port 1am of the harness-side unit 1a of the socket 1, and is configured in a corresponding positional relationship with the corresponding components. The plug 2b of the socket 1 can only be inserted into the lower plug insertion slot 1bm of the harness side unit 1a of the socket 1. Ri, there is no problem that causes them to the wrong connection.

Further, according to the DC connector of this embodiment, the fuses 3 and 3 are housed in each fuse arrangement portion in the housing 1ah of the harness side unit 1a of the socket 1, and the anode connected to the cylindrical contacts 1ac and 1ac on the anode side. Since the fuses 3 and 3 are interposed between the front strip conductors 3afc and 3afc and the rear strip conductors 3arc and 3arc that constitute the electric circuit on the side, when the server is connected to the centralized power supply unit, There is no need for troublesome processing such as inserting the fuses 3 and 3 in the middle of the cables 2ac and 2ac connected to the rear ends of the rod-shaped contacts 2ar and 2ar of the plug 2a. Also, as described above, the housing 1ah of the harness-side unit 1a of the socket 1 has the plug insertion openings 1am and 1bm arranged in a two-tiered state, so that it can be configured in a small space, and the DC connector itself can be made compact. It was also possible.

  Further, as described above, since the covering of the anode side cables 2ac, 2ac is set to red and the covering of the cathode side cables 2bc, 2bc is set to black, the plug 2a of the cables 2ac, 2ac, 2bc, 2bc, It is possible to reduce the possibility of errors when connecting to 2b and the like.

  According to the present embodiment, when a server rack for a data center equipped with a bus bar is equipped with a centralized power supply unit near the center and a plurality of servers in other parts to supply power to each server When the plug is connected to one end of a cable to be extended from the server rack, and the bus bar header of the socket is connected to the bus bar at a terminal portion protruding from the lower surface, the plug has a specific shape. Therefore, it can be reliably connected only to the corresponding plug insertion port of the socket, and there is no problem of causing a connection error.

  Further, according to this embodiment, since the fuse is interposed in the middle of the conductor on the anode side in the socket, troublesome processing such as inserting the fuse in the middle of the cable connected to the plug is not required. Further, as described above, since the socket plug insertion port is configured in a two-layered state, these configurations can be made within a small lateral width, and the DC connector itself can be miniaturized.

  Further, according to the present embodiment, as a unique shape characterizing each part of the plug, key grooves are formed in different parts of the housings of the two plugs, and the key protrusions are respectively provided in the corresponding parts of the plug insertion openings. Since the strip is configured, it is possible to insert only the corresponding plug into each plug insertion port while eliminating the risk of erroneous plug insertion while having a simple configuration.

  Further, according to the present embodiment, since the color of the cable sheath is set to a different color for each polarity of the rod-shaped contact of the plug, it is possible to reduce a possibility that an error will occur in mutual connection.

  The plug-type DC connector and DC connector of the present invention can be used in the field of electronic equipment manufacturing.

DESCRIPTION OF SYMBOLS 1 Socket 1a Harness side unit 1ab Harness side unit bracket 1ac Tubular contact 1ah Housing 1aj Center ridge 1al Holding lid 1alh Notch opening 1am Plug insertion port 1ap Key ridge 1asl Small lid 1b Busbar side header 1bat Anode side terminal 1bbt Cathode side terminal 1bb Busbar side header bracket 1bc Cylindrical contact 1bis Slit 1bj Center ridge 1bm Plug insertion slot 1bp Key ridge 1bys Slit 2a Plug 2ac Cable 2ag Groove 2ah Housing 2ak Key groove 2am Rod-shaped contact 2ar Rod-shaped contact 2b Plug 2bc Cable 2bg Concave groove 2bh Housing 2bk Keyway 2bm Opening 2br Bar-shaped contact 3 Fuse 3afc Front strip conductor 3bf Front strip conductor
3 arc Rear strip conductor 3brc Rear strip conductor b Bolt 4 DC connector 10a Plug type DC connector 10b Plug type DC connector 11 Housing 12 Cover 13 Contact 14 Contact 15 Contact 16 Cable 17 Fuse 18 Screw 20 Socket type DC connector 21 Housing 23a Contact 23b Contact 111 Locking part 112 Locking claw 113 Opening part 114 Projection part 115 Storage part 116 Storage opening part 121 Communication hole 122 Projection piece 123 Projection piece 131 Connection part 132 Connection piece 133 Connection piece 134 Connection part 134a Contact piece 141 Connection part 141a Contact Piece 142 Connection portion 151 Connection portion 152 Connection piece 153 Connection piece 154 Connection portion 161 Conductive portion 211a Plug insertion port 211b Plug insertion port 231a Contact Connection part 231b Connection part 232a Terminal part 232b Terminal part

Claims (8)

A plug-type DC connector provided in a power supply path for supplying power to an electronic device from a power source,
An insulating housing having two openings that open to the front, and a plug-side erroneous fitting prevention portion for preventing erroneous fitting with the mating connector on the outer surface,
A first plug-side contact having a first plug-side connection portion fixed to the housing and disposed in one of the two openings and connected to a first mating contact of the mating connector When,
A second plug-side contact comprising a cable connecting portion fixed to the housing and spaced apart from the first plug-side contact and connected to a conductive portion of the cable;
A second plug-side connecting portion fixed to the housing and disposed inside the other of the two openings and connected to a second mating contact of the mating connector; and connected to a conductive portion of the cable A third plug-side contact comprising: a cable connecting portion;
A fuse housed in the housing and connecting the first plug-side contact and the second plug-side contact;
A plug-type DC connector comprising: A cover attached to the housing;
The housing is
A housing portion for housing the first plug-side contact, the second plug-side contact, the third plug-side contact, and the fuse; and the interior of the housing portion is opened to the outside and covered with the cover. A storage opening,
The cover is
A communication hole that communicates the outside with the storage portion and exposes a connection portion with the fuse in the first plug-side contact and the second plug-side contact;
The communication hole is
2. The plug type DC connector according to claim 1, wherein the fuse serves as a guide when the fuse is housed in the housing. The first plug side contact and the second plug side contact are:
Connected to the anode side of the power source,
The third plug-side contact is
3. The plug type DC connector according to claim 1, wherein the plug type DC connector is connected to a cathode side of the power source. A socket type DC connector which is the mating connector to be connected to the plug type DC connector according to any one of claims 1 to 3,
A plug insertion opening opened forward for inserting the plug type DC connector, and a socket side misfit prevention portion formed in the plug insertion opening and corresponding to the shape of the plug side misfit prevention portion An insulating housing comprising:
A socket-side connection portion fixed to the housing and disposed inside the plug insertion port and connected to the first plug-side connection portion; and a terminal portion protruding outward from the housing and connected to the bus bar. A first socket-side contact that is the first counterpart contact;
A socket-side connection portion fixed to the housing and disposed inside the plug insertion port and connected to the second plug-side connection portion; and a terminal portion protruding outward from the housing and connected to the bus bar. A second socket-side contact that is the second mating contact;
A socket type DC connector comprising: The housing is
The socket type DC connector according to claim 4, comprising a plurality of the plug insertion openings opened adjacent to the front. Consisting of a socket and two plugs,
The two plugs each have a rod-shaped contact in two openings that open at the tip thereof, and the two plugs have a specific shape that characterizes each of them as part of each other,
The socket consists of a harness side unit having two plug insertion openings for inserting the two plugs and a bus bar side header connected to the bus bar of the server rack, which are opened in a two-tiered state.
The harness side unit corresponds to a specific shape characterizing each corresponding to each part so that only one or the other of the two plugs can be inserted into the two plug insertion openings. Forming a cylindrical shape, forming two cylindrical contacts that fit into the two rod-shaped contacts in each plug insertion slot, and connecting the two cylindrical contacts to the terminal portion of the bus bar side header. The rear end protrudes from the joint surface with the bus bar side header, and a fuse is inserted in the middle of the conductor connecting the anode side cylindrical contact and the terminal portion of the bus bar side header,
On the other hand, the bus bar header has a slit for inserting the rear end of each conductor on the joint surface with the harness side unit, and one end contacts the rear end of the conductor inserted into the slit. And a terminal portion serving as a connecting portion for connecting to the bus bar by projecting the other end to a surface opposite to the joint surface.   As a unique shape characterizing each of the two plugs, key grooves are formed at different positions on the outer surface of the housing of each plug to correspond to the respective plugs of the two plug insertion openings of the socket. 7. The DC connector according to claim 6, wherein a key ridge corresponding to each key groove is projected on the inner surface of the side.   The DC connector according to claim 6 or 7, wherein a color of a sheath of a cable connected to the rod-shaped contact of the plug is set to a different color for each polarity of the rod-shaped contact.

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