JP2011114047A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an electronic apparatus to be mounted on a rack and the rack from being broken owing to an excessive current etc. generated when the electronic apparatus is inserted into or extracted from the rack while a molded case circuit breaker (MCCB) is turned on. <P>SOLUTION: Since a projection portion 16 of an interlock protrudes from a side face of a housing 51 when the molded case circuit breaker 45 is turned on, the protrusion portion 16 abuts against a flange 64 of the rack when the housing 51 is inserted into the rack in the state to stop the insertion halfway, and a power supply connector on a back side of the housing 51 does not come into contact with a connector of the rack. Even if the protrusion portion 16 is forced to move back into the housing 51, a stopper portion and operation portion 17 abuts against a handle portion 46 of the molded case circuit breaker 45 soon, so the protrusion portion 16 moves a little. When the housing 51 is drawn out of the rack, the protrusion portion 15 abuts against a stopper portion 64a of the rack, so that the housing 51 can not be drawn out. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic device, and particularly relates to an electronic device that is mounted and operated in a rack, and more particularly to an electronic device having a structure that can prevent damage due to excess current even if it is inserted into and removed from a rack while being in a live line state due to errors or the like.

  Many electronic devices such as AC / DC converters and power distribution devices are mounted on racks or storage boxes. Such electronic devices are generally carried out by pulling them out from a rack or opening a storage box during maintenance. At that time, for example, the circuit breaker is turned off by providing an interlock so that the circuit breaker (MCCB) is turned on and pulled out from the rack to prevent damage or electric shock due to excessive current. If it doesn't become, it can't be pulled out.

  In such an interlock, various structures have been proposed in order to simplify the mechanism and reduce the installation space. For example, the interlock disclosed in Japanese Patent Application Laid-Open No. 2005-303244 is provided with an interlock on the back side of the housing unit. FIG. 12 is a cross-sectional view showing an interlock according to the prior art. In FIG. 12, 90 is a housing unit, 91 is a housing side connector, 92 is a receiving hole, 93 is a rack, 94 is a guide pin, 95 is a rack side connector, 96 is an interlock switch, and 96a is a movable piece.

  In the housing unit 90, the housing-side connector 91 provided on the back side is fitted with the rack-side connector 95 of the rack 93, and at the same time, the guide pins 94 of the rack-side connector 95 are fitted into the receiving holes 92 of the housing-side connector 91. This ensures mounting and electrical connection. The interlock switch 96 is switched on and off by a movable piece 96 a that can move in the insertion direction of the housing-side connector 91. When the housing side connector 91 and the rack side connector 95 are fitted, the movable piece 96a is pressed against the back side of the rack 93 by the housing unit 90, and the interlock switch 96 is turned on. On the other hand, when the housing side connector 91 and the rack side connector 95 are not fitted, the movable piece 96a is urged to the front side of the rack 93 by a spring (not shown), and the interlock switch 96 is turned off. When the interlock switch 96 is on, the external power supply and the rack-side connector 95 are electrically connected. When the interlock switch 96 is off, the electrical connection between the external power supply and the rack-side connector 95 is released.

  By the way, when such an electronic device is maintained, the maintenance work is generally performed after being pulled out from the rack. In a device with a circuit breaker on the front side of the housing, if an operator inserts or removes the electronic device into the rack without noticing that the circuit breaker is on, an excess current flows through the connector and the electronic Equipment may be damaged.

JP 2005-303244 A

  In order to solve the above-mentioned problems, the present invention is based on an excess current generated by inserting / removing the circuit breaker for wiring into / from the rack while the electronic circuit breaker is on, for example, when maintaining electronic equipment mounted on the rack. An object is to provide an electronic device capable of preventing damage.

  The invention according to claim 1 includes a housing, a circuit breaker provided on the front side of the housing, and a power connector provided on the back side of the housing, and is used by being mounted on a rack. In the electronic device, a restricting portion that can enter the working space of the handle portion of the circuit breaker for wiring and restrict the operation of the circuit breaker for turning on is protruded from an opening on a side surface of the housing. And a connecting portion provided to be slidable while being connected to the restricting portion and the protruding portion. When the connecting part is slid in the first direction, the restricting part is detached from the operating space of the handle part, the protruding part protrudes from an opening on a side surface of the housing, and the connecting part Slide the part in a second direction opposite to the first direction. In some cases, the restricting portion enters an operation space of the handle portion, and the protruding portion has an interlock configured to retreat into an opening on a side surface of the housing. Equipment.

  According to a second aspect of the present invention, in the first aspect of the present invention, the interlock is connected to the connecting portion and contacts the handle portion when the wiring breaker is in an on state. The electronic apparatus further comprises a stopper portion that restricts sliding of the connecting portion in the second direction by being in contact therewith.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the electronic device further includes a handle provided on the front side of the housing so as to be able to project forward, and the interlock is And connecting to the restricting portion, and when the connecting portion is slid in the first direction, the handle enters the operating space to restrict the protrusion of the handle, and the handle protrudes. The electronic device includes a cover portion configured to enter the working space of the cover portion and restrict sliding of the cover portion.

  The invention according to claim 4 is the invention according to claim 3, wherein the cover portion has a convex portion formed on a surface in contact with the handle, and the connecting portion is in contact with the cover portion and the handle. When the electronic device is slid in the first direction, the convex portion comes into contact with the handle to restrict the sliding of the connecting portion.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the interlock is fixed to the casing or a structural member provided inside the casing, The electronic apparatus further includes a guide portion that is provided in contact with a side surface of the protrusion and guides the protrusion or retraction of the protrusion.

  The invention according to claim 6 is the invention according to claim 5, wherein the connecting portion includes a first plate-like portion and a second plate-like portion arranged so as to be substantially orthogonal to each other. The first plate-shaped portion is disposed substantially parallel to the first direction, and is provided so that the restricting portion, the stopper portion, and the holding portion rise from an edge, and the second plate-shaped portion is The electronic device is arranged so as to be substantially orthogonal to the first direction, is slidably held by the guide portion, and is provided so that the protruding portion rises from an edge. is there.

  The invention according to claim 7 is the invention according to claim 6, wherein the connecting portion has an opening formed in the vicinity of a boundary between the first plate-like portion and the second plate-like portion. The guide portion is fixed to the housing or a structural member provided inside the housing, and rises from an edge of the fixed portion and contacts the side surface of the protrusion to guide the protrusion. The first guide portion provided on the fixed portion and the first guide portion that rises from the edge of the fixed portion so as to face the first guide portion, and are inserted into the opening of the connecting portion to guide the connecting portion. An electronic apparatus comprising a second guide portion.

  The invention according to an eighth aspect is the invention according to any one of the third to seventh aspects, wherein the handle is provided so as to protrude forward through an opening of the front panel of the housing. Yes, it is configured so that a pulling force of a spring provided on the back side of the front panel is always applied to the back side of the front panel, or is configured to protrude to the front. This is an electronic device.

  The invention according to claim 9 is the invention according to claim 8, wherein the interlock includes a gap between the cover part, the restricting part, and the holding part, and the front panel Two openings are formed, and the handle has a vicinity of both ends extending to the back side of the front panel through the two openings of the front panel, and the vicinity of the center is connected to the first connecting portion. The electronic device is disposed so as to be interposed between the cover portion, the restricting portion, and the holding portion when the direction is slid.

  According to the first aspect of the present invention, when the casing is inserted into the rack while the circuit breaker for wiring is turned on, the protruding portion is in a state of protruding from the opening on the side surface of the casing. The insertion of the electronic device is restricted by contacting a predetermined portion of the rack. Further, when the wiring breaker is pulled out from the rack while the wiring breaker is in the on state, the protruding portion comes into contact with a predetermined portion of the rack and the extraction of the electronic device is restricted. Therefore, since it cannot be inserted / removed in the live line state, it is possible to reliably prevent an excessive current from flowing through the electronic device.

  According to the second aspect of the present invention, since the connecting portion cannot be slid in the second direction when the circuit breaker for wiring is in an on state, when the circuit breaker for wiring is turned on, the protruding portion is It cannot be retracted into the opening. Therefore, it is possible to reliably prevent the circuit breaker for wiring from being mounted on the rack while being on.

  According to the third aspect of the invention, since the protrusion to the front side of the handle is restricted when it is slid in the first direction, the electronic device is held by holding the handle while the circuit breaker for wiring is in the on state. It becomes difficult to extract. In addition, it is possible to reliably prevent the circuit breaker for the wiring from being turned on while holding the handle. Therefore, it is possible to more reliably prevent damage to the protrusions or excessive current caused by forcible extraction.

  According to the invention described in claim 4, when the protrusion of the handle is restricted, the sliding of the connecting part is also restricted, so that the connecting part slides unnecessarily due to maintenance work or earthquake vibration. Can be prevented.

  According to the fifth aspect of the present invention, since the projecting or retreating of the projecting part is smooth, the sliding of the connecting part and the like is also smoothed.

  According to the invention described in claim 6, since the protruding portion can have a certain length or thickness in the front-rear direction or the vertical direction of the electronic device according to the shape of the second plate-like portion, the protrusion It becomes easy to give the part the necessary rigidity.

  According to the seventh aspect of the present invention, since the first sliding guide portion and the second sliding guide portion facing each other guide the sliding between the protruding portion and the connecting portion, they slide. The shakiness of time can be suppressed.

  According to the eighth aspect of the present invention, when the handle automatically slides to the back side due to the spring force of the spring, it is possible to suppress the projecting space to the front side of the handle except when the electronic device is inserted and removed. it can. Moreover, when sliding to the front side, since the edge of the cover part is in contact with the handle protruding to the front side, the protruding part can be prevented from inadvertently protruding from the side surface.

  According to the ninth aspect of the present invention, the movement of the handle is ensured when the protruding portion protrudes from the side surface of the housing by the central portion of the handle entering between the cover portion, the regulating portion, and the holding portion. Can be regulated. Therefore, it is possible to more reliably prevent the operator from gripping and inserting / removing the electronic device in a situation where the electronic device should not be inserted / removed.

It is the schematic front view and top view which show the insertion / extraction process with respect to the rack of the electronic device which concerns on embodiment, (a) is the state where the circuit breaker is off, and the protrusion part is not functioning, (b) is the circuit breaker for wiring A state in which the protrusion is functioning in the off state, (c) is a state in which the protrusion is functioning with the circuit breaker on, and (d) is a plan view thereof. It is a fragmentary perspective view which shows the insertion / extraction process with respect to the rack of the electronic device which concerns on embodiment, (a) is in the state which can be pulled out in front of a handle, (b) shows the state which cannot be pulled out in front of a handle. . It is a perspective view of the electronic device which concerns on embodiment, (a) is a perspective view from the front to the right side, (b) is a perspective view from the front to the left side. It is the perspective view of the state which saw through the front panel of the interlock of the electronic device which concerns on embodiment, and the periphery part of a handle. It is explanatory drawing which shows the electronic device and connector unit which concern on embodiment, (a) is a top view of an electronic device, (b) is a left view of an electronic device, (c) is a top view of a connector unit, (d ) Is a left side view of the connector unit. It is a perspective view which shows schematic structure of a rack. It is explanatory drawing (1) of the movable member of an interlock, (a) is a front view, (b) is a right view, (c) is a left view, (d) is a top view, (e) is a rear view. It is. It is explanatory drawing (2) of the movable member of an interlock, (a) is the perspective view seen from upper left back, (b) is the perspective view seen from upper right back. It is explanatory drawing of the guide part of an interlock, (a) is a front view, (b) is a left view, (c) is a right view, (d) is a top view, (e) is a bottom view, (f) ) Is a rear view, and (g) is a perspective view seen from the upper left front. It is a perspective view which shows the movement of the movable member of an interlock, (a) is a perspective view of the state which the protrusion part retracted, (b) is a perspective view of the state which the protrusion part protruded. It is a fragmentary perspective view which shows the modification of a handle, (a) shows the example of a single leg handle, (b) shows the example of a rotating handle. It is sectional drawing which shows the structure of the interlock based on a prior art.

  Hereinafter, electronic devices according to embodiments of the present invention will be described with reference to the drawings. 3A and 3B are perspective views of the electronic apparatus according to the embodiment, in which FIG. 3A is a perspective view from the front to the right side, and FIG. 3B is a perspective view from the front to the left side. FIG. 4 is a perspective view of a state in which the front panel of the peripheral portion of the interlock and handle of the electronic device according to the embodiment is seen through. In FIG. 3, 17 is a stopper / operating part, 18 is a cover part, 40 is a handle, 45 is a circuit breaker, 46 is a handle part, 47 is a handle, 48a, 48b, 48c and 48d are screws, 50 is an electronic device. A device, 51 is a housing, 52a and 52b are side surfaces, 53 is a front panel, 54 is an opening for operation, 56 is a grill, and 57a and 57b are rails. Moreover, in FIG. 4, 15 and 16 are protrusion parts, and other code | symbols show the same thing as FIG. In the following description, when describing the vertical and horizontal directions, the state facing the front panel of the electronic device is used as a reference. Also, the side that is closer to the front when the electronic device is mounted on the rack is referred to as the front side, and the side that is closer to the back is referred to as the back side.

  In this embodiment, description is made on the assumption that the electronic device 50 is an AC / DC power supply unit. However, the electronic device 50 is not limited to this, and for example, control of a power distribution unit, a communication unit, or some device. It may be a control unit or the like. In other words, the present invention can be used with any device as long as it is mounted on a rack and has a circuit breaker on the front side and a power connector on the back side. It can be preferably applied.

  As shown in FIGS. 3A and 3B, the electronic device 50 according to this embodiment includes a front panel 53 on the front side of the housing 51. An intake grill 56 is provided at the center of the front panel 53. Screws 48a, 48b, 48c, and 48d for fixing the casing 51 to the rack are provided above and below the left and right ends of the casing 51, respectively. Furthermore, an opening 54 for operation is formed on the left side of the front panel 53, and a circuit breaker 45 for wiring is disposed in the opening. The circuit breaker 45 is opened and closed by moving the handle portion 46 up and down. That is, when the handle portion 46 is moved up, it is turned on, and when it is moved down, it is turned off. Further, a cover portion 18 provided for interlock operation or the like is provided so as to protrude from the operation opening 54 to the front side. Further, near the left and right ends of the front panel 53, handles 40 and 47 for inserting or extracting the rack are provided. The handles 40 and 47 are usually retracted to the back side by the elastic force of the spring provided on the back side of the front panel 53, and when used, the front part is grasped and pulled out. The handle may have an interlock configuration that protrudes to the front side of the front panel by the spring force of the spring. Further, rails 57a and 57b are provided on the left and right side surfaces 52a and 52b of the casing, respectively, and are used in combination with the rails of the rack. In some cases, the screws 48a, 48b, 48c and 48d for fixing to the rack may be omitted.

  Further, as shown in FIG. 4, an interlock composed of projecting portions 15 and 16, a cover portion 18 and the like is disposed in the vicinity of the circuit breaker 45 for wiring. The interlock is disposed on the back side of the front panel 53 except for a part of the projecting portions 15 and 16 and the cover portion 18. Further, as will be described later, the interlock movable member is configured to slide to the left and right. The protrusions 15 and 16 are a part of the movable member, and restrict the insertion / extraction of the electronic device into / from the rack by abutting against the flange or stopper of the rack. The shape of the housing 31 is not limited to the shape shown in FIG. 4 or the like, and may be another shape such as a tall tower type. Further, depending on the configuration of the rack, the rails 57a and 57b may be omitted.

  Furthermore, the structure of the mounting-related part of the electronic device according to the embodiment will be described. 5A and 5B are explanatory views showing an electronic device and a connector unit according to the embodiment, wherein FIG. 5A is a plan view of the electronic device, FIG. 5B is a left side view of the electronic device, and FIG. 5C is a plan view of the connector unit. FIG. 4D is a left side view of the connector unit. FIG. 6 is a perspective view showing a schematic structure of the rack. 5, 58 is an opening, 59 is a power connector, 60 is a connector unit, 61 is a power connector, 62 is a connector mounting portion, and other reference numerals are the same as those in FIGS. In FIG. 6, 63a and 63b are side panels, 64 is a flange, 64a, 64b, 64c, 64d, 64e, 64f and 64g are stoppers, 65a, 65b, 65c, 65d, 65e, 65f and 65g are rails, Reference numerals 66a, 66b, 66c, 66d, 66e, 66f, and 66g denote connector unit mounting portions, and 67a, 67b, 67c, 67d, 67e, 67f, and 67g denote rails. In FIG. 6, only the side panels are shown, and the panels on the back surface, the flat surface (top surface), and the bottom surface of the rack are not shown. Further, the side panel 63b shows a state where a rail provided on the side panel 63b is seen through.

  As shown in FIG. 5, power supply to the electronic device 50 is performed via a power connector 59 provided on the back side of the housing 51. The power connector 59 is provided at a position substantially facing away from the wiring breaker 45 on the front side of the housing 51. Further, it is connected to the power connector 61 of the connector unit 60. The connector unit 60 uses the connector mounting portion 62 fixed to the rack. Further, the rack shown in FIG. 6 is used as a rack for mounting the electronic device 50. That is, this rack has seven steps, rails 65a, 65b, 65c, 65d, 65e, 65f and 65g and rails 67a, 67b, 67c, 67d, 67e, 67f on the side panels 63a and 63b of the rack. And 67g, and the rails 57a and 57b of the casing 51 are mounted on either rail to support the load of the electronic device 50, and the electronic device 50 can be easily inserted or removed. Further, a flange 64 and stopper portions 64a, 64b, 64c, 64d, 64e, 64f and 64g are provided on the front side of the side panel 63a. The protrusion 16 of the interlock comes into contact with the flange 64. The interlock projecting portion 15 abuts against a stopper such as the stopper portion 64a. Further, connector unit mounting portions 66a, 66b, 66c, 66d, 66e, 66f and 66g are provided on the back side.

  By the way, when the casing 51 shown in FIG. 3 is inserted toward the back of the rack, the insertion is completed when the front panel 53 comes into contact with the flange 64 shown in FIG. However, the power connector 59 of the housing 51 and the power connector 61 of the connector unit 60 shown in FIG. 5 are in contact with each other before the insertion is completed, and are electrically connected. Therefore, in order to prevent excessive current from being generated by inserting the circuit breaker 45 into the rack while the wiring circuit breaker 45 is on, the protruding portion 16 is connected to the flange 64 before the power connector 59 and the power connector 61 come into contact with each other. It is necessary to make contact. That is, the distance L from the back surface of the front panel 53 shown in the partially enlarged view of FIG. 5D to the surface or portion located on the most back side of the protrusion 16 is determined by the power connector 59 and the power connector 61. Before the contact, it is necessary to set the flange 64 so that the surface or portion located on the most back side of the protrusion 16 contacts the flange 64.

  Note that the rack on which the electronic device 50 is mounted is not limited to that shown in FIG. For example, instead of providing 65a, 65b, 65c, 65d, 65e, 65f and 65g, a partition plate is provided at each stage, and the electronic device 50 is placed on the partition plate. It may be a structure that supports the load. Moreover, it may replace with a thin plate-shaped flange and the frame with thickness may be provided. In this case, the protruding portions 15 and 16 that protrude are brought into contact with the frame to prevent the housing 51 from being inserted or removed. In addition, a caster may be provided on the bottom surface of the electronic device 50 and moved using the caster. Further, the number of racks may be any number as long as it is one or more. In addition, a rack may be incorporated in another device, for example, a device to which power from an AC / DC power supply is supplied, or a rack may be incorporated in a building. Furthermore, a front door, a lid, or the like may be provided.

  Further, the interlock structure will be described in detail. 7A and 7B are explanatory views (1) of an interlock movable member, where (a) is a front view, (b) is a right side view, (c) is a left side view, (d) is a plan view, and (e). ) Is a rear view. FIGS. 8A and 8B are explanatory views (2) of the interlock movable member. FIG. 8A is a perspective view seen from the upper left rear, and FIG. 8B is a perspective view seen from the upper right rear. In FIG. 7, 10 is a connecting portion, 11 is a second plate-like portion, 12 is a circular hole, 13 is a slit, 14 is a first plate-like portion, 19 is a convex portion, 20 is a regulating portion, 21 is a holding portion, 22 And 23 are gaps, 24 is a stepped portion, 25 is an end face, 26, 27 and 28 are outer faces, 29 is an end face, and the other symbols are the same as those in FIGS. Also, the reference numerals in FIG. 8 are the same as those in FIG.

  The interlock of this embodiment includes a movable member such as the connecting portion 10 and the cover portion 18 that move in the left-right direction, and a guide portion that is a fixed member. The center of the movable member is a connecting portion 10 that serves to connect the respective portions. The entire connecting portion 10 is formed in a substantially rectangular plate shape, and is bent at approximately 90 degrees near the center of the long side. Among the bent portions, the first plate-like portion 14 is disposed so as to be substantially parallel to the front panel 53. Therefore, the direction of movement of the protrusions 15 and 16 is also substantially parallel. As shown in FIG. 7, the stopper / operating unit 17, the regulating unit 20, and the holding unit 21 stand upright from the three edges of the first plate-like portion 14 toward the front of the electronic device 50.

  The other second plate-like portion 11 of the bent portion is disposed so as to be substantially orthogonal to the front panel 53. Further, the projecting portion 15 stands upright from the upper edge of the second plate-shaped portion 11 toward the left side of the electronic device 50. Therefore, the length of the protrusion 15 in the depth direction can be freely set within the range of the length of the second plate-like portion 11 in the depth direction. Further, a circular hole 12 is formed at the center of the second plate-like portion 11. The circular hole 12 is used for sliding a support column 32 of a guide unit described later. Further, a slit 13 is formed in the vicinity of the boundary with the first plate-like portion 14. The slit 13 is for inserting a part of the guide portion and holding the connecting portion 10 in a slidable state. In addition, the lower portion of the second plate-like portion 11 is formed wider than the upper portion by the thickness of the protruding portion 16, and this boundary is a step 24. By providing the step 24, the outer surface 26 of the projecting portion 16 that hangs down from the projecting portion 15 and the end surface 25 of the second plate-like portion 11 are included in the same plane. There is no sticking and it can slide smoothly.

  The protruding portion 15 is formed by the front end surface 29 of the electronic device 50 coming into contact with the rack stopper portion 64a when the operator is careless or tries to pull out the housing 51 in the wrong work procedure. It plays a role in regulating work and preventing failure due to excessive current. In addition, the protruding portion 15 is formed in a substantially rectangular plate shape, and the protruding portion 16 hangs from an end portion on the rear side of the electronic device 50. The protruding portion 16 is connected to the power connector 59 and the power connector 61 of the connector unit 60 when the outer surface of the protruding portion 16, that is, the rear surface of the electronic device 50 abuts against the flange 64. It has the role of stopping work before it is done and preventing failure due to excessive current. In addition, the protruding portion 15 and the protruding portion 16 are bent in directions orthogonal to each other so as to have greater rigidity as the entire protruding portion. Therefore, the protrusion 15 does not directly contact the flange 64 when the housing 51 is to be inserted, but the rigidity of the entire protrusion is increased, and the protrusion 16 is deformed or damaged by an impact applied during insertion. Play a role to prevent. In addition, when the entire protrusions 15 and 16 are configured to completely enter the inside of the opening 58, the tip of the protrusion 15 or 16 hangs on the edge of the opening 58 and the protrusions 15 and 16 do not come out to the outside. Since there is a possibility, the size of the protrusions 15 and 16 seems to be partially outside the housing 51 even when the interlock is released, that is, in the state of being retracted into the opening 58. It is desirable to set to.

  The stopper / operating portion 17 stands upright from the right edge closest to the handle portion 46 of the circuit breaker 45 among the edges of the first plate-like portion 14. Further, when the movable member including the stopper / operating portion 17 is moved to the right and the wiring breaker 45 is in the ON state, the gap between the stopper / operating portion 17 and the handle portion 46 is very small. It arranges so that it may be slightly. Therefore, in this state, even if the movable member including the cover portion 18 is moved to the right side, the stopper portion / operating portion 17 immediately comes into contact with the handle portion 46 so that the movable member can hardly be moved. Further, as described above, the handle portion 46 is configured to move in the vertical direction, and moves downward, that is, to the side where the circuit breaker 45 is turned off, even when pressed by the stopper / operating portion 17 from the right side. There is nothing, and the on state is maintained. Further, the distal end side of the stopper / operation portion 17 protrudes from the operation opening 54 of the front panel 53 shown in FIG. 3 toward the front side. This has the role which an operator hold | grips in order to operate the movable member containing the stopper part and operation part 17 right and left. Note that a cover portion 18 extends from the edge on the distal end side of the stopper / operating portion 17 in a direction parallel to the first plate-like portion 14. Note that a separate operation portion may be provided in the interlock, and the stopper / operation portion 17 may be configured to have only a stopper role.

  The cover part 18 has both the role of covering the handle 40 so that the operator cannot grip the handle 40 and the role of maintaining the positional relationship between the interlock and the handle 40. When the movable member including the cover portion 18 is moved to the left side, the cover portion 18 moves further to the front side of the handle 40 and covers the handle 40. Therefore, it becomes very difficult for the operator to grasp the handle 40. Note that even if there is a gap between the cover portion 18 and the handle 40, there is an effect that makes it difficult for the operator to grip the handle 40. However, as will be described later, it is affected by unnecessary vibrations from the outside. It is desirable that both are in contact with each other from the viewpoint of preventing the movable member from moving to the left.

  A convex portion 19 is formed at a position slightly close to the tip end side of the cover portion 18. The convex part 19 protrudes on the back side of the cover part 18 and extends in the vertical direction. When the cover portion 18 covers the handle 40, the cover portion 18 and the handle 40 are in contact with each other, but the convex portion 19 is provided so as to be positioned on the tip side of the cover portion 18 with respect to this contact portion. . Therefore, for example, when a work or earthquake vibration is transmitted during maintenance work of the electronic device 50 or when the electronic device 50 is not in use, the handle portion 46 is positioned on the lower side. May move to the right. However, the movement of the cover portion 18 is restricted by the convex portion 19 unless the convex portion 19 moves over the contact portion of the handle 40. As a result, it is possible to prevent the interlock from being released unintentionally. As described above, the convex portion 19 reduces the influence of unnecessary external vibration and the like while the electronic device 50 is in use, and stably maintains the positional relationship between the interlock and the handle 40. However, when the operator releases the interlock, the convex portion 19 can easily get over the contact portion of the handle 40 manually, and the handle 40, the cover portion 18 and the like are not plastically deformed or damaged. It is necessary to do so. Since the magnitude of the force when the convex portion 19 gets over the contact portion of the handle 40 is determined by the length of the stopper / operating portion 17 in the front-rear direction of the electronic device 50, this length is determined in consideration of this force. There is a need. In this embodiment, the ridgeline extends in the vertical direction, but a plurality of small convex portions may be arranged in the vertical direction. Moreover, you may form by adhering another material, such as resin.

  The restriction unit 20 prevents the operator from moving the handle unit 46 of the wiring circuit breaker 45 in the ON direction due to an erroneous operation after the operator turns off the wiring circuit breaker 45 and further operates the cover unit 18 to the right side. Have. That is, the restricting portion 20 stands upright from the lower edge among the edges of the first plate-like portion 14. Further, when the handle portion 46 is located on the off side and the restricting portion 20 or the like is slid to the right side, the restricting portion 20 enters the operating range of the handle portion 46 and is located near the upper side of the handle portion 46. It is configured. Therefore, when the operator turns off the circuit breaker 45 and moves the cover portion 18 to the right side to release the interlock, the restricting portion 20 also moves to the right and enters the operating range of the handle portion 46. Since the movement of the portion 46 in the on direction is restricted, it cannot be switched on.

  The holding unit 21 holds the handle 40 so that the handle 40 can be pulled out almost horizontally when the handle 40 is pulled out. 2A, which will be described in detail later, when the handle 40 is pulled forward, the rising portion 42a is inclined so that the back side of the rising portion 42a is low and the front side thereof is high in the middle. It is possible. If the rising portion 42a is inclined in the middle, the stopper 43a may be caught on the first plate-like portion 14. Therefore, by providing the holding portion 21 in a state of being very close to the rising portion 42a and being horizontal, when the rising portion 42a starts to be inclined while pulling the handle 40, the holding portion 21 comes into contact with the holding portion 21. I try not to be inclined any further.

  As shown in FIG. 7B, gaps 22 and 23 are provided between the cover portion 18 and the ends of the restriction portion 20 and the holding portion 21 on the cover portion 18 side. The gaps 22 and 23 are spaces in which the handle 40 and the front panel 53 are accommodated when the restricting portion 20 and the holding portion 21 are moved to the left side, that is, when the interlock is locked. Accordingly, the gaps 22 and 23 need to be wide enough to allow the handle 40 and the front panel 53 to enter, but at the same time, the protrusion 19 does not easily get over the handle 40 due to vibration such as an earthquake. In addition, it is necessary that the cover portion 18, the handle 40, the front panel 53, the restricting portion 20, and the holding portion 21 have a width that allows light pressure contact with each other.

  Next, the guide part which is a fixing member will be described. FIGS. 9A and 9B are explanatory views of an interlock guide, where FIG. 9A is a front view, FIG. 9B is a left side view, FIG. 9C is a right side view, FIG. 9D is a plan view, and FIG. (F) is a rear view, (g) is a perspective view seen from the upper left front. FIG. 10 is a perspective view showing the movement of the movable member of the interlock, in which (a) is a perspective view in a state in which the protruding portion is retracted, and (b) is a perspective view in a state in which the protruding portion is protruded. 9, 30 is a guide portion, 31 is a fixed portion, 32 is a support column, 33 is a first guide portion, 34 is a bent portion, 35 is a bent portion, 36 is a second guide portion, and 37, 38 and 39 are inner surfaces. It is. The reference numerals used in FIG. 10 are the same as those in FIGS.

  As shown in FIG. 9, the guide part 30 is a fixed member and has a role of supporting the movable member and guiding the sliding of the connecting part 10 and the protruding part 15. The center of the guide part 30 is a fixed part 31 that serves to connect the peripheral parts. The fixed portion 31 is fixed to a structural material (not shown) inside the housing 51 and has a role of connecting the portions. Note that the fixed portion 31 may be fixed to any portion of the housing 51. The support column 32 is formed at the center of the fixed portion 31 and has a role of guiding the sliding of the movable member. The first guide portion 33 stands upright on the left side from the rear edge of the fixed portion 31, and the bent portions 34 and 35 are formed by bending the upper and lower ends toward the front side. Further, the inner side surface 37 of the first guide portion 33 is provided in contact with the outer side surface of the protruding portion 15. Furthermore, the inner side surface 39 of the bent portion 34 and the inner side surface 38 of the bent portion 35 are provided in contact with the outer side surface of the protruding portion 16 and the lower end surface of the second plate-like portion 11, respectively.

  The second guide portion 36 stands upright on the left side from the front edge of the fixed portion 31, and faces the first guide portion 33. Furthermore, as shown to Fig.10 (a), it penetrates the slit 13 of a movable member. Further, as shown in FIG. 10B, when the cover portion 18 is moved to the left side, the first guide portion 33 and the bent portions 34 and 35 move the second plate-like portion 11 and the protruding portions 15 and 16 outward. These slides are guided while being supported so as to envelop from. The second guide portion 36 guides the sliding of the connecting portion 10 while holding the second plate-like portion 11 so as to sandwich the first guide portion 33. Of course, it works in the same way when moved to the right. As described above, the guide portion 30 guides these left and right movements while supporting the movable member such as the connecting portion 10 by the opposed first guide portion 33 and second guide portion 36.

  The movable member such as the connecting portion 20 and the guide portion 30 are each formed by processing one sheet metal, but may be formed by bonding or brazing a plurality of metal plates. good. If there is no problem in mutual connection and rigidity, a part or the whole may be formed of a different material such as a resin. If there is no problem in the operation of the electronic device and the safety of the work, either or both of the member that cannot be seen from the outside of the movable member and the guide portion 30 are exposed to the outside such as the operation opening 54. You may arrange.

  Next, operations related to the insertion / extraction of the electronic apparatus according to this embodiment will be described. 1A and 1B are a schematic front view and a plan view showing a process of inserting / removing an electronic device according to an embodiment from / to a rack, where FIG. A state in which the protruding portion is functioning when the circuit breaker is off, (c) is a state in which the protruding portion is functioning when the circuit breaker is on, and (d) is a plan view thereof. 2A and 2B are partial perspective views showing a process of inserting / removing the electronic device according to the embodiment with respect to the rack. FIG. 2A is a state in which the electronic device can be pulled out to the front of the handle, and FIG. Indicates that the drawer cannot be drawn. FIG. 2 shows a state in which the front panel of the peripheral part of the interlock and the handle is seen through. In FIG. 1, the state which looked through the front panel of the peripheral part of an interlock is shown. The reference numerals used in FIG. 1 are the same as those in FIG. 3, FIG. 6 and FIG. 2, 41 is a gripping part, 42a and 42b are rising parts, 43a and 43b are retaining parts, 44a and 44b are springs, 55a and 55b are openings for handles, and the other symbols are the same as in FIG. Show things.

  First, a procedure for inserting the electronic device 50 extracted from the rack into the rack again after maintenance is described. In the state of being extracted from the rack, as shown in FIG. 1A, the handle portion 46 of the circuit breaker 45 for wiring is located below, and the restricting portion 20 is located on the right side. Therefore, the casing 51 is inserted into the rack as it is. In this state, the protrusions 15 and 16 are retracted toward the inside of the casing 51, and the protrusions 15 and 16 and the rack flange 64 do not come into contact with each other, so that the casing 51 is completely inserted. can do. At this time, as shown in FIG. 2A, the handle 40 has an operation for inserting and removing the casing 51 by grasping the grip portion 41 because the cover portion 18 is located on the right side of the handle 40. be able to. It should be noted that spring stoppers 43 a and 43 b are provided at both ends of the handle 40, and springs 44 a and 44 b are interposed between the front panel 53. When the grip portion 41 is gripped and operated, the springs 44a and 44b are contracted and the rising portions 42a and 42b are exposed in front of the handle openings 55a and 55b.

  In addition, even if it is attempted to move the handle portion 46 of the circuit breaker 45 for wiring up before insertion due to a mistake in the procedure, the handle portion 46 is prevented from moving up against the restriction portion 20. The circuit breaker 45 for wiring cannot be turned on before the operation. Further, even if the restricting portion 20 is moved to the left side and the handle portion 46 is moved upward, the projecting portions 15 and 16 project from the housing 51 to the state shown in FIG. Therefore, even if the casing 51 is inserted into the rack in this state, the protrusions 15 and 16 abut against the flange 64 in the middle of the insertion, so that the insertion of the casing 51 is prevented in the middle. Further, since the power connector 59 of the casing 51 and the power connector 61 of the rack are not electrically connected, there is no problem due to live connection.

  When the housing 51 is completely inserted, as shown in FIG. 1B, the restricting portion 20 is moved to the left side so that the protruding portions 15 and 16 protrude from the housing 51. In this state, the protrusions 15 and 16 are located in contact with or in the vicinity of the back side of the rack stopper 64a. Therefore, even if the casing 51 is pulled forward, the movement of the protrusions 15 and 16 is restricted by the stopper portion 64a, so that the casing 51 hardly moves. Moreover, although the grip part 41 is in contact with the back side of the cover part 18, the position where the grip part 41 is in contact is the right side of the convex part 19 shown in FIG. Therefore, even if a force to move the cover portion 18 to the right side due to external vibrations or the like is applied, the cover portion 18 does not move further to the right over the grip portion 41 of the handle 40. Stops moving. When the handle 40 is released from the grip 41, the handle 40 is moved backward by the elastic force of the springs 44 a and 44 b so that the grip 41 is in contact with the front panel 53 as shown in FIG. Become. Therefore, when the cover part 18 is moved to the left side, the cover part 18 is positioned in front of the grip part 41, so that the grip part 41 cannot be gripped by being covered with the cover part 18.

  Next, as shown in FIG. 1C, when the handle portion 46 of the circuit breaker 45 for wiring is moved upward, the electronic device 50 becomes in use. In this state, even if the restricting portion 20 is moved to the right side, the cover portion 18 hardly moves to the right side because the stopper / operating portion 17 immediately contacts the handle portion 46. Further, even if the casing 51 is pulled forward by some means, the movement of the protrusions 15 and 16 is restricted by the stopper portion 64a, and the casing 51 hardly moves.

  Next, a procedure for extracting the electronic device 50 in use from the rack will be described. When the electronic device 50 is used, the state shown in FIG. First, the handle portion 46 of the circuit breaker 45 for wiring is moved downward to obtain the state shown in FIG. Further, the left end portion of the cover portion 18 is moved to the right while being pulled slightly forward, and the convex portion 19 gets over the grip portion 41 and further moves to the right. Thereby, as shown to Fig.1 (a), it will be in the state by which the protrusion part 15 retreated to the place which is not controlled by the stopper part 64a, and the interlock was cancelled | released. As shown in FIG. 2 (a), the handle 40 is released from the state where the cover 18 is covered from the front, and can be operated by grasping the grip 41, so that the grip 41 is pulled toward the front. The housing 51 is extracted.

  In addition, as a fixing means of the electronic device 50, there are a method of fixing with a fastener without using a screw and a method of not performing screw fixing. Also for an electronic device having such a configuration, the interlock according to the present embodiment is not connected electrically when the casing 51 is inserted and removed while the circuit breaker 45 is turned on, and the live connection is established. Therefore, it can be said that this is a very useful configuration.

  As described above, in the electronic device 50 according to this embodiment, even if the circuit breaker 45 is turned on when the housing 51 is inserted into the rack after the maintenance work, the power connector of the housing 51 Before the 59 and the power connector 61 of the rack are electrically connected, the protrusions 15 and 16 abut against the flange 64 to prevent further insertion. Therefore, damage due to excess current due to insertion of the electronic device 50 in a live line state does not occur. Further, after the insertion of the casing 51, even if the circuit breaker 45 for wiring is switched from the OFF state to the ON state, the restricting portion 20 is moved to the left so that the protruding portions 15 and 16 do not protrude from the left side surface of the casing 51. Since it cannot be turned on for as long as possible, it is possible to reliably prevent the electronic device 50 from being operated while forgetting to lock the interlock. Further, when the casing 51 is removed from the rack for maintenance of the electronic device 50, the protrusions 15 and 16 are moved into the casing 51 unless the circuit breaker 45 is switched from the on state to the off state. Since the electronic device 50 cannot be retracted, it is possible to reliably prevent the electronic device 50 from being pulled out in a live state. Further, during locking of the interlock, the cover portion 18 is positioned in front so that the handle 40 cannot be gripped, and even if the protruding portions 15 and 16 are damaged, there is a clue to pull out the housing 51. Therefore, it is possible to reliably prevent the electronic device 50 from being pulled out in a live state. In addition, since it is not necessary to perform secondary processing such as attaching a bar to the circuit breaker 45 for wiring, the cost burden is small.

  Furthermore, a modified example of the handle will be described based on the drawings. FIG. 11 is a partial perspective view showing a modification of the handle, where (a) shows an example of a single leg handle and (b) shows an example of a rotating handle. 11, 42 is a rising portion, 43 is a stopper, 44 is a spring, 49 is a rotating shaft, 55 is a handle opening, and the other symbols are the same as those in FIG.

  Although FIG. 2 etc. demonstrated the electronic device using the substantially U-shaped handle, the interlock of this invention is applicable similarly to the handle of another form. For example, the handle 40 shown in FIG. 11A is formed in a substantially T shape, and the rising portion 42, the stopper 43, the spring 44, and the handle opening 55 are provided one by one. Further, the rising portion 42 is provided on the side in contact with the regulating portion 20, and the regulating portion 20 also has the function of the holding portion 21 in this example. Therefore, it can be said to be a suitable example when the height of the electronic device is low and the vertical length of the handle cannot be secured.

  Further, the handle 40 shown in FIG. 11 (b) has a form in which the rising portion 42 is rotatable forward and downward about the rotation shaft 49. When the rising portion 42 is rotated toward the front, the grip portion 41 is positioned at the front, so that there is an advantage that it can be easily grasped and extracted. When the rising portion 42 is rotated upward, the rising portion 42 is in a state parallel to the front panel 53. In this state, when the restricting portion 18 is moved to the left side, the restricting portion 18 is positioned in front of the rising portion 42 and restricts the rotation of the rising portion 42. Therefore, it can be said to be a suitable example when a space for storing two rising portions cannot be secured inside the electronic device. As described above, the handle 40 can project forward, and can be configured to restrict the restricting portion 18 from being positioned in front of a predetermined portion of the handle and projecting toward the front when retracted to the back side. If so, the shape of the handle may be anything.

  As mentioned above, although two embodiment of this invention was described, this invention is not limited to embodiment mentioned above, A various deformation | transformation and application are possible within the range which does not deviate from the summary of this invention. is there. For example, the interlock and the circuit breaker for wiring may be arranged so as to be symmetric with respect to the casing of the above-described embodiment. Moreover, the handle part of the circuit breaker for wiring may be formed in a single bar shape. Further, even if the handle portion is a rotary type, the rotation can be restricted by the restricting portion 20, and when the circuit breaker for wiring is in the on state, the handle portion is located in the immediate vicinity of the stopper / operating portion 17, and the stopper portion / operating portion 17 As long as it does not turn off even if it comes into contact, it can be preferably applied to a rotary type.

DESCRIPTION OF SYMBOLS 10 Connection part 11 2nd plate-shaped part 12 Circular hole 13 Slit 14 1st plate-shaped part 15 Protrusion part 16 Protrusion part 17 Stopper part and operation part 18 Cover part 19 Protrusion part 20 Restriction part 21 Holding part 22 Gap 23 Gap 24 Step Portion 25 End surface 26 Outer side surface 27 Outer side surface 28 Outer side surface 29 End surface 30 Guide portion 31 Fixing portion 32 Column 33 First guide portion 34 Bending portion 35 Bending portion 36 Second guiding portion 37 Inner side surface 38 Inner side surface 39 Inner side surface 40 Handle 41 Grip part 42 Rising part 42a Rising part 42b Rising part 43 Retaining stopper 43a Retaining stopper 43b Retaining stopper 44 Spring 44a Spring 44b Spring 45 Circuit breaker 46 Handle part 47 Handle 48a Screw 48b Screw 48c Screw 48d Screw 49 Rotating shaft 50 Electronic equipment 51 Housing 52a Side 52b Side 53 Front Panel 54 Opening for operation 55 Opening for handle 55a Opening for handle 55b Opening for handle 56 Grill 57a Rail 57b Rail 58 Opening 59 Power connector 60 Connector unit 61 Power connector 62 Connector mounting part 63a Side panel 63b Side panel 64 Flange 64a Stopper portion 64b Stopper portion 64c Stopper portion 64d Stopper portion 64e Stopper portion 64f Stopper portion 64g Stopper portion 65a Rail 65b Rail 65c Rail 65d Rail 65e Rail 65f Rail 65g Rail 66a Connector unit attachment portion 66b Connector unit attachment portion 66c Connector unit attachment Portion 66d Connector unit mounting portion 66e Connector unit mounting portion 66f Connector unit mounting portion 66g Connector unit mounting portion 67a Rail 67b Rail 67c Rail 67d Rail 67e Rail 67f Rail 67g Rail 90 Case unit 91 Case side connector 92 Receiving hole 93 Rack 94 Guide pin 95 Rack side connector 96 Interlock switch 96a Movable piece

Claims (9)

In an electronic device equipped with a housing, a circuit breaker provided on the front side of the housing, and a power connector provided on the back side of the housing,
A restricting portion provided so as to be able to restrict an operation of entering the working space of the handle portion of the circuit breaker and turning on the circuit breaker; and a predetermined portion of the rack protruding from the opening on the side surface of the housing A protrusion provided so as to be able to restrict insertion / extraction of the electronic device into / from the rack by abutting on, and a connecting part provided so as to be slidable while being connected to the restriction part and the protrusion,
When the connecting portion is slid in the first direction, the restricting portion is separated from the working space of the handle portion, and the protruding portion protrudes from an opening on a side surface of the housing,
When the connecting portion is slid in a second direction opposite to the first direction, the restricting portion enters the working space of the handle portion, and the protruding portion is an opening on a side surface of the housing. An electronic device comprising an interlock configured to retreat toward the inside.   The interlock is connected to the connecting portion and regulates sliding of the connecting portion in the second direction by contacting the handle portion when the circuit breaker for wiring is in an ON state. The electronic device according to claim 1, further comprising a stopper portion. The electronic device further includes a handle provided on the front side of the housing so as to protrude forward.
The interlock is provided connected to the restricting portion, and when the coupling portion is slid in the first direction, the interlock enters the handle operating space to restrict the protrusion of the handle, or The electronic device according to claim 1, further comprising a cover portion configured to enter the working space of the cover portion when the handle protrudes and to restrict sliding of the cover portion. machine.   The cover portion is formed with a convex portion on a surface in contact with the handle, and when the connecting portion is slid in the first direction when in contact with the cover portion and the handle, the convex portion is The electronic apparatus according to claim 3, wherein the electronic apparatus is configured to be in contact with the handle and restrict sliding of the connecting portion.   The interlock is fixed to the casing or a structural member provided inside the casing, is provided in contact with a side surface of the protrusion, and further includes a guide portion that guides the protrusion or retraction of the protrusion. The electronic device according to any one of claims 1 to 4, wherein the electronic device is provided. The connecting portion includes a first plate-like portion and a second plate-like portion arranged so as to be substantially orthogonal to each other,
The first plate-like portion is disposed substantially parallel to the first direction, and is provided so that the restricting portion, the stopper portion, and the holding portion rise from an edge,
The second plate-like portion is disposed so as to be substantially orthogonal to the first direction, is slidably held by the guide portion, and is provided so that the protruding portion rises from an edge. The electronic device according to claim 5, wherein: The connecting portion has an opening formed in the vicinity of the boundary between the first plate-like portion and the second plate-like portion,
The guide portion is fixed to the housing or a structural member provided inside the housing, and rises from an edge of the fixed portion and contacts the side surface of the protrusion to guide the protrusion. A first guide portion provided; and a first guide portion that rises from an edge of the fixed portion so as to face the first guide portion and is inserted into the opening of the connecting portion to guide the connecting portion. The electronic apparatus according to claim 6, further comprising two guide portions.   The handle is provided so as to protrude forward through the opening of the front panel of the housing, and is pulled to the back side of the front panel by the resilient force of a spring provided on the back side of the front panel. The electronic device according to any one of claims 3 to 7, wherein the electronic device is configured to be constantly applied with force or protrudes to the front. The interlock has a gap between the cover part and the restricting part and the holding part,
The front panel is formed with two openings.
The handle has a cover in the vicinity of both ends that extends to the back side of the front panel through the two openings of the front panel, and the vicinity of the center slides the connecting portion in the first direction. The electronic apparatus according to claim 8, wherein the electronic apparatus is disposed so as to be interposed between a portion, the restriction portion, and the holding portion.

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