JP2016096043A - Connector integrating plug-in fuse holder and interlock mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector integrating a plug-in fuse holder with an interlock mechanism for preventing errors in the insertion and removal of a fuse, and the insertion and removal procedure of a power cable of output, and the interlock mechanism.SOLUTION: In a connector 10 integrating a plug-in fuse holder, a connector receiver 11 and the fuse holder 12 are integrated. The fuse holder 12 incorporates an insulating elastic member provided with a convex portion, and is arranged so that a portion of the elastic member projects from the fuse holder. The elastic member is in a predetermined space so as to be able to bend in the fuse holder 12, and the connector receiver 11 includes a fixation hole at a position where the convex portion is inserted, when the elastic member deformed into dogleg. A connector insertion part 21 is provided with a fixation hole into which the convex portion is inserted, when the convex portion of the elastic member is pushed out while passing through the fixation hole of the connector receiver 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a plug-in fuse holder integrated connector and an interlock mechanism for preventing harmful arc discharge from occurring when a power cable is inserted into and removed from an output connector (or output outlet) in a DC distribution board. About.

  In conventional communication buildings, power is supplied to each communication device by DC power supply with high efficiency and high reliability. FIG. 9 shows a system configuration diagram of a general DC power supply. The DC power output from the rectifier 51 is distributed to each rack 53 by the current distributor 52 and further distributed to each communication device 54 by the distribution board 55 in the rack 53.

  FIG. 10 shows a circuit diagram of a distribution board in a general rack. DC power supplied from the current distribution device 52 is distributed from the input connector 56 to a predetermined number of branches, and each branch has a fuse 57 and an output connector 58 (or outlet).

  The role of the fuse 57 of the distribution board 55 is to prevent the communication apparatus 54 from spreading to other communication devices 54 connected to the same distribution board when a failure such as a short circuit failure occurs. The fuse 57 is mainly a plug-in type in order to facilitate replacement work such as maintenance.

  In recent years, with an increase in network demand, there are many various types of communication devices such as servers, routers, and switches in communication buildings, and the number of communication devices mounted in one rack is increasing.

  On the other hand, the distribution board in the rack is mounted on the mount frame together with communication devices such as servers and routers. If the number of communication devices mounted in the rack is large, a large distribution board with many branches is required. The Further, when communication devices having different types of input voltages are mounted in one rack, the power conversion device is also mounted in the rack.

  Conventionally, a distribution board for a DC power supply has been designed with a sufficient margin for installation of each part such as a terminal board and a distribution panel having a fuse for each system (Patent Document 1).

JP-A-7-177617

  However, in recent years, the proportion of power equipment in the rack has become a problem, and in order to reduce the area occupied by the power equipment in the rack, it is integrated with a distribution board or power converter of about 1U size. There is also a need for a device that can be mounted in a dead space of a rack.

  In the downsizing and integration of such devices, the placement of parts such as connectors and fuses becomes close and high in density, so work mistakes such as misplacement of parts are likely to occur during field operations. Become. Therefore, when miniaturizing or integrating the apparatus, a safe component arrangement that takes into consideration workability during operation is required.

  With direct current power supply, the arc is more likely to persist than with alternating current. Therefore, it is necessary to pay attention to the arc when the power cable is connected to or disconnected from the output connector (outlet) while the distribution board is powered. When disconnecting the power cable connected to the communication device from the distribution board when power is supplied to the distribution board when replacing the communication device, etc., remove the fuse so that no voltage is applied to the output connector. Unplug the power cable from the work procedure.

  However, an arc is generated if the power cable is accidentally disconnected before the fuse is removed in a state where power is supplied to the distribution board. Similarly, when the output cable is connected in a state where power is supplied to the distribution board, an arc is generated when the power cable is connected after the fuse is inserted. Thus, when an arc occurs between the power cable to which the communication device is connected and the output connector, there is a concern that the communication device may be destroyed by the arc.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a plug-in fuse holder with an interlock mechanism for preventing errors in the insertion and removal of the fuse and the insertion and removal procedure of the output power cable. A body connector and an interlock mechanism are provided.

  The present invention has been invented in view of the above problems.

  The plug-in fuse holder and connector receiving part are integrated, and the fuse holder is characterized by a simple mechanical interlock. The movable part of the interlock mechanism is composed of an insulating elastic member provided with a convex part at the bending point. Further, the connector receiving portion and the insertion portion are provided with holes through which the convex portions of the elastic member can be inserted and removed. When the fuse unit is inserted into the fuse holder, the elastic member is bent, and the convex portion provided at the bending point of the elastic member is inserted into the hole of the connector receiving portion and the insertion portion.

  The fuse unit has an elastic member receiving portion that receives a part of the elastic member protruding from the fuse holder.

  When the fuse unit is not inserted into the fuse holder, the elastic member of the movable part of the interlock mechanism partially protrudes from the fuse holder, but when inserting the fuse unit into the fuse holder, the elastic member receiving part of the fuse unit Is designed to contact the tip of the protruding elastic member. Accordingly, by inserting the fuse unit into the fuse holder, the elastic member is pushed in the same direction as the fuse unit, and the elastic member is bent and deformed into a “<” shape. Along with this, the projection provided near the bending point of the elastic member protrudes perpendicularly to the insertion direction of the fuse unit and slides to the connector receiving side integrated with the fuse holder. At this time, when the connector insertion portion is inserted into the connector receiving portion, the convex portion is inserted into a hole formed in the connector insertion portion, and the connector insertion portion is fixed to the connector receiving portion.

  When the fuse unit is inserted in the fuse holder, the connector insertion part cannot be removed from the connector receiving part, but when the fuse unit is removed from the fuse holder, the elastic member returns to its original state and the convex part is returned to the connector receiving part. The connector can be removed from the connector and returned to the fuse holder, and the connector insertion portion can be removed from the connector receiving portion.

  In order to solve the above-mentioned problem, the present invention is a plug-in fuse holder integrated connector, and is a plug-in fuse holder in which an elastic member provided with a convex portion at a bending point is built in a bendable manner, When inserting a fuse unit including a fuse into the plug-in fuse holder, a part of the elastic member protrudes from the plug-in fuse holder so that the elastic member protruding from the fuse comes into contact with the fuse unit. A plug-in fuse holder provided with a hole through which the convex portion can be protruded to the outside of the plug-in fuse holder when the elastic member is bent by a pressing force for insertion; and a protrusion from the plug-in fuse holder A power connector receiving portion provided with a hole into which the convex portion can be inserted, and the plug Characterized in that it is impossible to insert the power connector inserting portion in the power connector after the convex portion wherein the fuse unit is inserted in the fuse holder comes bidding to the power source connector received portion.

  According to a second aspect of the present invention, in the plug-in fuse holder integrated connector according to the first aspect, when the fuse unit is inserted into the plug-in fuse holder, the elastic member is elastic from the fuse unit. The convex portion protrudes into the power connector receiving portion by being deformed into a “<” shape by a force applied in the longitudinal direction of the member.

  The invention according to claim 3 is an interlock mechanism, wherein the plug-in fuse holder integrated connector according to claim 1 or 2, the fuse unit, and a hole into which the convex portion can be inserted are provided. A connector insertion portion, and when the fuse unit is inserted into the plug-in fuse holder after the power connector insertion portion is inserted into the power connector, the protruding portion protruding into the power connector receiving portion is It is inserted in the hole of a power connector insertion part, It is characterized by the above-mentioned.

  The invention according to claim 4 is the interlock mechanism according to claim 3, wherein the fuse unit has a recess, and the elastic member protrudes in the recess when the fuse unit is inserted into the fuse holder. It is characterized by receiving the tip portion of the.

  According to the present invention, when the output power cable is connected to or disconnected from the DC distribution board, it is possible to prevent the arc from being generated by mistakenly connecting and disconnecting the power cable while the voltage is applied to the output power cable. it can. Further, since the interlock functions by inserting and removing the fuse unit, an operation only for the interlock becomes unnecessary.

It is a perspective view of the receiving part of a plug-in fuse holder integrated connector concerning one embodiment of the present invention, a connector insertion part, and a fuse unit. (A) is sectional drawing ranging over the plug-in fuse holder and connector receiving part of the plug-in fuse holder integrated connector which concerns on one Embodiment of this invention, (b) is a plug-in fuse holder integrated connector receiver It is sectional drawing orthogonal to the short side of the plug-in fuse holder of a part. (A) is sectional drawing orthogonal to the long side of the connector insertion part inserted in the plug-in fuse holder integrated connector which concerns on one Embodiment of this invention, (b) is a plug-in fuse holder integrated connector It is sectional drawing orthogonal to the short side of the connector insertion part to insert. (A) is sectional drawing orthogonal to the long side of the fuse unit which concerns on one Embodiment of this invention, (b) is sectional drawing orthogonal to the short side of a fuse unit. (A), (b) is a figure which shows the process in which a power cable is inserted in the receiving part of a plug-in fuse holder integrated connector. (A), (b) is a figure which shows the process in which a power cable is pulled out from the receiving part of a plug-in fuse holder integrated connector. It is a figure which shows the state which inserted the fuse unit in the fuse holder accidentally before the connector insertion part. FIG. 2 is a diagram showing a configuration example in which a plug-in fuse holder integrated connector 10 is incorporated in a DC distribution board 20. 1 is a general DC power supply system configuration diagram. It is a circuit diagram of a distribution board in a general rack.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a perspective view of a plug-in fuse holder integrated connector, a connector insertion portion, and a fuse unit according to an embodiment of the present invention. FIG. 2A shows a cross-sectional view of the plug-in fuse holder integrated connector according to an embodiment of the present invention, which spans the plug-in fuse holder and the connector receiving portion, and FIG. Sectional drawing orthogonal to the short side of the plug-in fuse holder of a fuse holder integrated connector is shown.

  The plug-in fuse holder integrated connector 10 includes a connector receiving portion 11 and a fuse holder 12 that are integrated. Further, the fuse holder 12 incorporates an insulating elastic member 14 provided with a convex portion 15, and a part of the elastic member 14 is disposed so as to protrude from the fuse holder 12. The elastic member 14 is in a predetermined space so that the elastic member 14 can be bent in the fuse holder 12, and a position where the convex portion 15 is inserted into the connector receiving portion 11 when the elastic member 14 is deformed into a “<” shape. Is provided with a fixing hole 16.

  FIG. 3A is a cross-sectional view orthogonal to the long side of the connector insertion portion to be inserted into the plug-in fuse holder integrated connector according to one embodiment of the present invention, and FIG. The figure is shown. When the power plugs 24A and 24B are connected to the terminals 23A and 23B of the connector insertion portion 21, and the connector insertion portion 21 is inserted into the connector receiving portion 11, the terminals 23A and 23B become the terminals 17A on the connector receiving portion 11 side. , 17B, and is designed to be electrically connected to each other.

  Further, when the convex portion 15 of the elastic member 14 protrudes through the fixing hole 16 of the connector receiving portion 11 after the connector inserting portion 21 is inserted into the connector receiving portion 11, The fixing hole 22 into which the part 15 is inserted is provided.

  FIG. 4A shows a cross-sectional view orthogonal to the long side of the fuse unit according to the embodiment of the present invention, and FIG. 4B shows a cross-sectional view orthogonal to the short side. The fuse unit 31 includes terminals 33A and 33B, a fuse 34 connected between the terminals 33A and 33B, and an elastic member receiving portion 32 that fixes the elastic member 14 protruding from the fuse holder 12. When the fuse unit 31 is inserted into the fuse holder 12, the terminals 33A and 33B are designed to contact and be electrically connected to the terminals 18A and 18B on the fuse holder 12 side, respectively.

  Note that the elastic member receiving portion 32 shown in FIG. 4 and the like is a U-shaped recess, but this is to ensure that the elastic member 14 can be caught and pushed. Therefore, the elastic member receiving portion 32 may be a flat surface as long as the elastic member 14 can be pushed in.

  When the fuse unit 31 is inserted into the fuse holder 12, the fuse unit 31 may be fixed to the fuse holder 12 by the frictional force of the terminals, but a locking portion (not shown) for fixing the fuse unit 31 and the fuse unit 31 to each other. May be provided.

  5A and 5B show a process of inserting the power cable into the receiving portion of the plug-in fuse holder integrated connector. First, the connector insertion portion 21 to which the power cable 24 is connected is inserted into the connector receiving portion 11 (FIG. 5A). Next, when the fuse unit 31 is inserted into the fuse holder 12, the elastic member 14 protruding from the fuse holder 12 is fixed to the elastic member receiving portion 32 of the fuse unit 31. When the terminal 33 of the fuse unit 31 is inserted into the fuse holder 12 as it is, the elastic member 14 is pushed and deformed into a “<” shape. Then, the convex portion 15 enters the fixing holes 16 and 22 of the connector receiving portion 11 and the connector insertion portion 21, and the connector insertion portion 21 is fixed to the connector receiving portion 11 (FIG. 5B). Thus, in a state where the fuse unit 31 is inserted in the fuse holder 12, the connector insertion portion 21 cannot be removed from the connector receiving portion 11.

  6A and 6B show a process of pulling the power cable from the receiving portion of the plug-in fuse holder integrated connector. First, when the fuse unit 31 is pulled out, the elastic member 14 returns to the original state, and the convex portion 15 comes out of the fixing holes 16 and 22 of the connector receiving portion 11 and the connector insertion portion 21 (FIG. 6A). Thus, in the state where the fuse unit 31 is removed from the fuse holder 12, the connector insertion portion 21 can be removed from the connector receiving portion 11 (FIG. 6B).

  FIG. 7 shows a state where the fuse unit is erroneously inserted into the fuse holder prior to the connector insertion portion. When the fuse unit 31 is inserted into the fuse holder 12, the convex portion 15 of the elastic member 14 protrudes into the connector receiving portion 11 through the fixing hole 16, so that even if the connector insertion portion 21 is inserted into the connector receiving portion 11, the convex portion 15 is convex. Part 15 is caught and cannot be inserted.

  FIG. 8 shows a configuration example in which the plug-in fuse holder integrated connector 10 is incorporated in the DC distribution board 20. As described above, even when the power supply cable is arranged immediately next to the fuse unit, since the interlock mechanism is provided, there is no fear that the power cable is pulled out before the fuse unit is accidentally pulled out to generate an arc.

DESCRIPTION OF SYMBOLS 10 Plug-in fuse holder integrated connector receiving part 11 Connector receiving part 12 Fuse holder 13 Interlock mechanism 14 Elastic member 15 Convex part 16, 22 Fixing hole 17, 18, 23, 33 Terminal 21 Connector insertion part 24 Output power cable 31 Fuse Unit 32 Elastic Member Receiving Section 34 Fuse 40 DC Distribution Board 41 Input Power Cable 51 Rectifier 52 Current Distribution Device 53 Rack 54 Communication Equipment 55 Distribution Board 56 Input Connector 57 Fuse 58 Output Connector

Claims (4)

A plug-in fuse holder in which an elastic member provided with a convex portion at a bending point is incorporated so as to be bendable, and the elastic member protrudes from the fuse when a fuse unit including a fuse is inserted into the plug-in fuse holder A part of the elastic member protrudes from the plug-in fuse holder so that the elastic member is bent by the force to push in to insert the fuse unit, so that the convex portion becomes the plug-in fuse holder. A plug-in fuse holder provided with a hole that can be projected to the outside,
A power connector receiving portion provided with a hole into which the convex portion protruding from the plug-in fuse holder can be inserted;
The power connector insertion portion cannot be inserted into the power connector after the fuse unit is inserted into the plug-in fuse holder and the convex portion protrudes into the power connector receiving portion. Plug-in fuse holder integrated connector.   When the fuse unit is inserted into the plug-in fuse holder, the elastic member is deformed into a “<” shape by a force applied from the fuse unit in the longitudinal direction of the elastic member, so that the convex portion is The plug-in fuse holder integrated connector according to claim 1, wherein the plug-in fuse holder-integrated connector is protruded into the power connector receiving portion. Plug-in fuse holder integrated connector according to claim 1 or 2,
The fuse unit;
A hole into which the convex part can be inserted is provided, and a power connector insertion part,
When the fuse unit is inserted into the plug-in fuse holder after inserting the power connector insertion portion into the power connector, the protruding portion protruding into the power connector receiving portion is the power connector insertion portion. The interlock mechanism is characterized by being inserted into the hole.   4. The interlock mechanism according to claim 3, wherein the fuse unit has a recess and receives a tip portion of the elastic member protruding from the recess when the fuse unit is inserted into the fuse holder.

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