JP2013090468A - Interlock structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent an electric shock accident due to a human operation error in fuse replacement in a protection device having a fuse and a disconnector provided to wiring.SOLUTION: A protection device 1 is provided with an interlock structure 2 including: a cover member 3 capable of moving between an attachment/detachment disallowed position where the fuse is disallowed to be attached or detached and an attachment/detachment allowed position where the fuse is allowed to be attached or detached; a rotary member 4 which is fitted to the cover member rotatably between a first rotational position where movement from the attachment/detachment disallowed position is stopped and a second rotational position where the movement is allowed; a rotary operation member 5 which is fixed thereto, and gripped to move the cover member and to rotate the rotary member; a slide member 6 which can move linearly between a switching restriction position where disconnectors SW1, SW2 are restricted from being turned ON and a switching allowed position where the disconnectors are allowed to be turned ON; a slide stop member which stops the slide member from moving from the switching restriction position while the cover member is arranged at the attachment/detachment allowed position; and a cam mechanism which converts the rotational movement of the rotary member into linear movement of the slide member.

Description

  The present invention relates to an interlock structure for replacing a fuse.

Conventionally, among the circuits for supplying power from the power supply device to the storage battery or from the storage battery to the load device, the wiring between the power supply device and the storage battery and the wiring between the storage battery and the load device are for protecting the wiring. A fuse is detachably provided (see, for example, Patent Document 1). In such a configuration, when the output of the load device is a low voltage (for example, a safety potential of DC 48V), the fuse can be replaced while the wiring is kept in an energized state. On the other hand, when replacing the fuse when the output of the load device is a high voltage (for example, a dangerous potential of DC 380 V), the wiring on the power supply device side and the wiring on the storage battery side of the fuse are used to prevent electric shock. Both must be in a non-conductive state (no potential).
Therefore, conventionally, it has been considered to provide a disconnector that is connected in series to the fuse to switch the conductive / nonconductive state of the wiring. With such a configuration, the disconnector can be operated to make the wiring non-conductive.

JP-A-60-39319

  However, since the operator operates the disconnector and replaces the fuse, simply providing the disconnector may cause an electric shock accident due to human error. In particular, when there are a plurality of disconnectors to be operated, the fuse replacement procedure is complicated, and thus an operation error is particularly likely to occur.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an interlock structure that can reliably prevent an electric shock accident due to an artificial operation error during fuse replacement.

  In order to solve this problem, the interlock structure of the present invention includes a circuit between a power supply device and a storage battery, or a power supply device to supply power to a load device. An overcurrent-preventing fuse that is detachably provided in the wiring, and a disconnector that is connected in series to the fuse and switches between conductive / non-conductive state of the wiring, A cover member that is movable between a non-detachable position that prevents attachment and detachment of the fuse and an attachment / detachment allowable position that allows attachment and detachment of the fuse, and is attached rotatably to the cover member, Rotating between a first rotational position that prevents movement from the non-detachable position to the attachable / detachable position and a second rotational position that allows movement to the attachable / detachable position A rotating member that is movable, a rotating operation member that is integrally fixed to the rotating member and grips when the cover member is moved and rotated, and the wiring is connected from a non-conductive state to a conductive state The sliding member that can move linearly between the switching restriction position that restricts the switching operation of the disconnector to be switched to the switching permission position that permits the switching operation of the disconnector, and the cover member are arranged at the attachment / detachment permission position. The first rotation position of the rotating member in a state where the slide member that prevents the slide member from moving from the switching restriction position to the switching permission position and the cover member are arranged at the non-detachable position A cam mechanism that converts the rotational movement from the second rotation position to the linear movement from the switching allowable position to the switching restriction position of the slide member; For example, when the wiring is conductive, the disconnector is characterized in that it prevents the movement to the switching 換規 system position from the switching allowable position of the slide member.

  When a current is supplied from the power supply device to the storage battery or from the storage battery to the load device by the security device provided with the interlock structure, the disconnector is turned on and the wiring is energized. In this energized state, the cover member is disposed at the non-detachable position, and the rotating member is disposed at the first rotational position. Further, the slide member is arranged at the switching allowable position, and movement to the switching restriction position is restricted by the disconnector. Furthermore, since the rotating member is connected to the slide member via the cam mechanism in a state where the cover member is disposed at the non-detachable position, the rotating member may be rotated from the first rotating position toward the second rotating position. Be regulated. And since the rotation member is arranged at the first rotation position, the cover member is prevented from moving from the non-detachable position. Therefore, when the wiring is energized, the fuse cannot be attached or detached.

  In the security device provided with the interlock structure, in order to attach and detach the fuse, first, after turning off the disconnector and making the wiring non-conductive, the rotary operation member is gripped and the rotary member is rotated first. What is necessary is just to rotate and move toward a 2nd rotation position from a position. During this rotational movement, the slide member moves linearly from the switching allowable position to the switching restriction position by the cam mechanism. Thus, in the state which moved the rotation member and the slide member, the movement of the cover member to the attachment / detachment allowable position is allowed.

  Thereafter, the fuse can be attached / detached by moving the cover member to the attachment / detachment allowable position while holding the rotation operation member. Further, in the state in which the cover member is arranged at the attachment / detachment allowable position, since the movement of the slide member from the switching restriction position to the switching permission position is restricted by the slide prevention member, it is possible to reliably prevent the disconnector from being turned on. .

  In the interlock structure, the cam mechanism is formed on the rotating member, and the elliptical arc-shaped cam track extending around the rotation axis of the rotating member and the cover member are arranged at a non-detachable position. And a follower portion that is slidable in the longitudinal direction with respect to the cam track in accordance with the rotational movement of the rotating member in a state of being engaged with the cam track. It is good to be.

  In this configuration, the cam track is formed in an elliptical arc centered on the rotation axis of the rotating member, so that the force for rotating the rotating member can be efficiently applied to the slide member when the follower portion is engaged with the cam track. Can be transmitted, and the slide member can be smoothly linearly moved. In other words, the rotating member can be smoothly rotated even when the follower portion is engaged with the cam track.

  Further, in the interlock structure, the cam track is a cam groove formed to be recessed in the rotating member, and the follower part is a protrusion formed to protrude from the slide member, With the slide member disposed at the switching restriction position, the rotation member disposed at the second rotation position as the cover member moves between the detachable allowable position and the non-detachable position. It is even better if it is inserted and removed from the cam groove.

Further, in the interlock structure, the projection is formed in a tapered shape that gradually becomes thinner from the base end side in the projecting direction toward the tip end side, and at least the diameter dimension of the tip end portion in the projecting direction of the projection is equal to the cam groove. It is more preferable that it is set smaller than the width dimension.
Specific examples of the tapered shape of the protrusion include a truncated cone shape and a cone shape.

Since the protrusion has the tapered shape as described above, even when the relative position between the cam groove and the protrusion is slightly deviated when the protrusion is inserted into the cam groove from the distal end portion thereof, the protrusion can be securely inserted. It can be inserted into the cam groove.
Even if the relative position is misaligned, the dimension of the base end portion of the protrusion is set larger than that of the distal end portion. Therefore, as the degree of insertion of the protrusion into the cam groove progresses, the relative relationship between the cam groove and the protrusion is increased. Correct misalignment.

  Further, in the interlock structure, the cam groove is formed so as to penetrate the rotating member so that the protrusion can be inserted, and the protrusion is proximally protruded from the outer peripheral surface of the protrusion. In a state where a constricted portion is formed and the rotating member is arranged at the first rotational position, a peripheral portion of the cam groove enters the constricted portion of the protrusion, and the rotating member is disposed at the second rotational position. The cam groove width dimension is set so that the peripheral edge of the cam groove comes out of the constricted portion in a state where the cover is disposed, and the peripheral edge of the cam groove enters the constricted portion of the protrusion, thereby It is preferable that movement of the member from the non-detachable position to the attachable / detachable position is prevented.

  Further, in the interlock structure, the cover member is integrally formed with the safety device and engaged with the rotating member disposed at the first rotating position, so that the attachment / detachment permission of the cover member from the non-detachable position is enabled. An engagement portion that prevents movement to a position, and by rotating the rotating member from the first rotation position toward the second rotation position, the engagement state between the engagement portion and the rotation member is It may be canceled.

  By using a rotating member as a mechanism for preventing the movement of the cover member to the attachment / detachment allowable position like these interlock structures, the number of parts constituting this mechanism can be reduced. In particular, when the mechanism for preventing the movement of the cover member is configured only by the protrusions and cam grooves, a new member or shape for configuring the mechanism is not required, and therefore the number of parts configuring the mechanism. Can be minimized.

  Furthermore, in the interlock structure, the mechanism for linearly moving the slide member is formed integrally with the security device and a long hole formed in the slide member and extending in the linear movement direction of the slide member, A sliding pin that is slidable in the longitudinal direction with respect to the elongated hole by being inserted into the elongated hole, and the elongated hole and the sliding pin are spaced apart from each other. A plurality of sets may be provided.

  In this configuration, when a plurality of long holes and sliding pins for moving the slide member in the linear movement direction are provided, the force for rotating the rotating member is converted to the force for linearly moving the slide member by the cam mechanism. This force can surely prevent the slide member from being inclined with respect to the linear movement direction. In other words, the slide member can be linearly moved in a stable state.

  Further, in the interlock structure, the slide member is formed in a flat plate shape, the follower portion is formed on a peripheral portion of the main surface of the slide member, and a mechanism for linearly moving the slide member is the slide member. A long hole that is formed in the sliding member and extends in the linear movement direction, and is formed integrally with the security device, and can be slid in the longitudinal direction with respect to the long hole by being inserted into the long hole. And at least two pairs of the long holes and the sliding pins are provided so as to be spaced apart from each other, and the cover member is disposed at the non-detachable position. The two long holes may be arranged so as to be adjacent to the follower portion in the linear movement direction of the slide member.

When three or more pairs of elongated holes and sliding pins are provided as in the above configuration, the cam mechanism slides the force that rotates the rotating member regardless of the relative positions of the rotation axis, the elongated holes, and the sliding pins. By reducing the stress applied to the slide member when transmitting to the member, the force for rotating the rotating member can be converted into the force for linearly moving the slide member more efficiently. That is, the slide member can be linearly moved in a more stable state.
Further, by arranging the two long holes and the protrusions in a row, it is possible to set the distance between the two long holes and the protrusions to be short. For this reason, even when the rotating member is moved to the non-detachable position together with the cover member to engage the follower portion with the cam track, even if the rotating member is pressed against the follower portion, The bending deformation of the slide member can be suppressed.

According to the present invention, the slide member can be moved to the switching restriction position and the cover member can be moved to the attachment / detachment allowable position only in a state where the disconnector is turned off (wiring is not energized). The fuse can be prevented from being attached or detached in the energized state. That is, it is possible to prevent an electric shock accident due to an artificial operation mistake when replacing the fuse.
In particular, since the operator can move both the slide member and the cover member while holding the same rotation operation member, it is not necessary for the operator to directly touch the slide member to move the slide member linearly. As a result, it is possible to prevent an artificial error in the arrangement of the slide member.
Further, according to the present invention, since both the slide member and the cover member can be moved while the operator holds the same rotation operation member, the fuse can be easily replaced in a short time. .

It is a circuit diagram showing circuit composition of a security device which provides an interlock structure concerning a first embodiment of the present invention. It is a schematic perspective view which shows a part of security device provided with the interlock structure which concerns on 1st embodiment of this invention. FIG. 3 is a schematic front sectional view showing an interlock structure in the state of FIG. 2. It is a schematic sectional side view which shows a part of interlock structure in the state of FIG. FIG. 5 is a schematic front sectional view showing a state after the rotating member is rotated from the first rotation position to the second rotation position in the interlock structure shown in FIGS. FIG. 6 is a schematic perspective view showing a state after the cover member is moved from the non-detachable position to the attachable / detachable position in the interlock structure shown in FIG. 5. It is a schematic sectional side view which shows a part of interlock structure and the safety device in the state of FIG. It is an expanded sectional view which shows the relationship between the cam groove and protrusion of the cam mechanism which comprises the interlock structure which concerns on 2nd embodiment of this invention. The interlock structure which concerns on 2nd embodiment of this invention is shown, (a) is a general | schematic front sectional view of an interlock structure, (b) is the relationship between the cam groove and protrusion of a cam mechanism in (a). FIG. The interlock structure shown in FIG. 9 shows a state after the rotational member is rotationally moved from the first rotational position to the second rotational position, (a) is a schematic front sectional view of the interlock structure, b) is an enlarged sectional view showing the relationship between the cam groove and the protrusion of the cam mechanism in FIG. It is a schematic sectional side view which shows a part of interlock structure which concerns on other embodiment of this invention, and the security device which provided this. In the interlock structure shown in FIG. 11, it is a schematic sectional side view which shows the state after moving a cover member from the attachment-and-detachment position to the attachment-detachment allowable position.

[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
The interlock structure according to the present embodiment is provided in the security device.
As shown in FIG. 1, the security device 1 according to this embodiment includes a power supply device 100 and a power supply device 100 in a circuit for supplying power from the power supply device 100 to the storage device 200 or from the storage battery 200 to the load device 300 via the power supply device 100 An overcurrent-preventing fuse 12 detachably provided on the wiring 11 between the storage batteries 200, and two disconnectors SW1 and SW2 connected in series to the fuse 12 to switch the conduction / non-conduction state of the wiring. The circuit configuration is provided.
In this circuit configuration, the power supply device side terminal 13 and the storage battery side terminal 14 for connecting to the power supply device 100 and the storage battery 200 are provided at both ends of the wiring 11. The two disconnectors SW1 and SW2 are provided between the power supply side terminal 13 and the fuse 12 and between the fuse 12 and the storage battery side terminal 14, respectively.

As shown in FIGS. 2 to 7, the security device 1 having the above circuit configuration accommodates the fuse 12 inside the housing 15 in a state of being connected to the wiring 11 described above, and has two so as to protrude to the outside. The disconnectors SW1 and SW2 are generally configured by being attached to the casing 15.
More specifically, the fuse 12 is arranged so as to be exposed to the outside of the casing 15 through an opening 17 having a rectangular shape in front view formed in the flat operation panel plate 16 forming the outer wall of the casing 15. Has been. When the fuse 12 is exposed to the outside through the opening 17, the fuse 12 can be taken in and out of the housing 15 (attached to and removed from the wiring 11). (See especially FIGS. 6 and 7.)

  On the other hand, the two disconnectors SW <b> 1 and SW <b> 2 are arranged in contact with the operation panel plate 16 so as to protrude from the outer surface 16 a of the operation panel plate 16. These two disconnectors SW1 and SW2 are arranged in one direction along the outer surface 16a of the operation panel plate 16 (X-axis direction in the illustrated example; hereinafter also referred to as the left-right direction) so as to sandwich the opening 17 therebetween. Further, the vertical position of each disconnector SW1, SW2 is set so as to match the substantially middle position of the opening 17 in the vertical direction. The vertical direction indicates a direction (Z-axis direction in the illustrated example) orthogonal to the one direction along the outer surface 16a of the operation panel plate 16.

  Each of the disconnectors SW1 and SW2 is a so-called slide switch that can be switched between the conductive / non-conductive state of the wiring 11 by sliding in the vertical direction. In this embodiment, the direction of the switching operation of each disconnector SW1, SW2 is a state in which each disconnector SW1, SW2 is slid downward (turned OFF), and the wiring is in a non-conductive state. Although it is assumed that the wiring is set to be in a conductive state when SW1 and SW2 are slid upward (ON state), the present invention is not limited to this. For example, the direction of the switching operation of each disconnector SW1, SW2 may be opposite to that described above. The direction of the switching operation of the two disconnectors SW1 and SW2 may be set in the same direction, but may be set in the opposite direction, for example.

  Further, in the casing 15 of the security device 1, a step plate portion 18 is formed that is bent with respect to the operation panel plate 16 so as to protrude from the outer surface 16 a of the operation panel plate 16. The step plate portion 18 is positioned below the opening 17 (Z-axis negative direction side) with a space therebetween, and the outer surface thereof faces upward. A slit-like engagement hole (engagement portion) 19 extending in the left-right direction is formed in the step plate portion 18 so as to penetrate in the thickness direction.

The interlock structure 2 according to the present embodiment includes a cover member 3, a rotating member 4, a rotating operation member 5, and a slide member 6, and is roughly configured.
The cover member 3 is integrally formed with a flat plate portion 31 formed in a rectangular shape in plan view and a side plate portion 32 protruding in the thickness direction of the flat plate portion from the entire periphery of the flat plate portion. Appearance. The cover member 3 is arranged on the outer surface 16a side of the operation panel plate 16, and is rotated by a hinge or the like so as to extend in the X-axis direction (left and right direction of the operation panel plate 16) at the upper end edge of the opening 17 of the operation panel plate 16. It is attached to the operation panel plate 16 so as to be rotatable about the axis A1. Specifically, the cover member 3 includes a non-removable position (in particular, see FIG. 3) that covers the opening 17 from the outer surface 16 a side of the operation panel plate 16, and a fuse that is separated from the opening 17 and accommodated inside the housing 15. It is possible to rotate between an attachment / detachment allowable position (in particular, see FIG. 7) that exposes 12 to the outside.

The arrangement of the cover member 3 will be described in detail. As shown in FIGS. 2 to 5, in the state where the cover member 3 is disposed at the non-detachable position, the flat plate portion 31 faces the opening portion 17 and the side plate portion. The leading end 32 in the protruding direction comes into contact with the peripheral portion of the opening 17 in the outer surface 16 a of the operation panel plate 16. In this state, the fuse 12 cannot be taken in and out of the housing 15. That is, the cover member 3 prevents the fuse 12 from being attached or detached.
On the other hand, as shown in FIGS. 6 and 7, in the state where the cover member 3 is arranged at the attachment / detachment allowable position, the flat plate portion 31 is arranged so as to extend vertically from the outer surface 16 a of the operation panel plate 16, thereby opening the opening. The portion 17 is exposed to the outside, and the fuse 12 can be taken in and out of the housing 15. That is, the cover member 3 allows the fuse 12 to be attached and detached.

Moreover, as shown in FIGS. 2-4 among the side-plate parts 32 of the said cover member 3, in the state which has arrange | positioned the cover member 3 in the non-detachable position, the side-plate part 32 is opposite to each disconnector SW1 and SW2. A notch-shaped insertion port 33 formed so as to be recessed from the front end in the protruding direction is formed.
Further, in the side plate portion 32 of the cover member 3, the portion facing the step plate portion 18 in a state where the cover member 3 is disposed at the non-detachable position penetrates in the thickness direction of the side plate portion 32 and extends in the left-right direction. An extending slit-like opening hole 34 is formed. The opening hole 34 is disposed so as to face the engagement hole 19 of the step plate portion 18 in a state where the cover member 3 is disposed at the non-detachable position.

  Further, as shown in FIGS. 3 to 7, the cover member 3 and the casing 15 described above are connected by a link mechanism 7 that defines a rotation range of the cover member 3 from the non-detachable position to the attachable / detachable position. . This link mechanism 7 includes a first swing arm 71 swingably attached to the housing 15 side and a second swing arm 72 swingably attached to the cover member 3 side by pin connection. It is configured so as to be swingable with respect to each other. The first swing arm 71 and the second swing arm 72 are moved in and out of the housing 15 through the opening 17 in accordance with the movement of the cover member 3 between the undetachable position and the attachable / detachable position.

Specifically, in a state where the cover member 3 is disposed at the non-detachable position, the first swing arm 71 and the second swing arm 72 are bent so as to overlap each other and are accommodated in the housing 15. (See particularly FIG. 4). On the other hand, in a state where the cover member 3 is arranged at the attachment / detachment allowable position, the first swing arm 71 protrudes from the opening 17 to the outside of the housing 15, and the first swing arm 71 and the second swing arm 72 are long. Arranged in the direction (see particularly FIGS. 6 and 7). In this arrangement state, even if the operator removes his / her hand from the cover member 3, the cover member 3 can be held at the attachment / detachment allowable position by the first swing arm 71 and the second swing arm 72.
A pair of link mechanisms 7 configured as described above are provided at both ends in the left-right direction (X-axis direction) of the opening 17 and the cover member 3 of the operation panel plate 16 (see particularly FIGS. 3 and 5). ).

The rotating member 4 is formed in a flat plate shape, and is attached to the flat plate portion 31 of the cover member 3 so as to be rotatable about the rotation axis A2. The rotating member 4 in the illustrated example has a flat octagonal shape when viewed from the front, but is not limited thereto, and may have an arbitrary shape such as a polygonal shape or an elliptical shape when viewed from the front.
The rotating member 4 is arranged on the inner surface side of the flat plate portion 31 facing the opening 17 so as to be accommodated inside the box-shaped cover member 3. The rotation axis A2 extends in the thickness direction of the flat plate portion 31 and the rotation member 4 of the cover member 3 so as to pass through the center of the rotation member 4 in plan view. Further, the rotation axis A2 is positioned closer to the lower side than the intermediate position of the cover member 3 in the vertical direction. In other words, the rotation axis A2 is arranged close to the upper end edge (lower side) of the cover member 3 where the rotation axis A1 is located with respect to the intermediate position in the vertical direction of the cover member 3.

The rotating member 4 has a first rotating position (in which the rotating member 4 protrudes from the opening hole 34 of the cover member 3 and is inserted into the engaging hole 19 of the housing 15 in a state where the cover member 3 is disposed at the non-detachable position). 2 and 3) and the second rotational position (see particularly FIG. 5) where the rotating member 4 is extracted from the engagement hole 19 and is inserted into the opening hole 34, and can be rotated. Yes. In the present embodiment, the rotational angle of the rotating member 4 that rotates between the first rotating position and the second rotating position is 90 depending on the relationship between the cam groove 41 of the rotating member 4 and the protrusion 67 of the slide member 6 described later. Is set to degrees.
As shown in FIGS. 2 and 3, when the rotating member 4 provided as described above is inserted into the engagement hole 19 of the housing 15 and engaged with the rotation member 4, the cover member 3 can be attached / detached from the non-detachable position. Movement to position is prevented. On the other hand, as shown in FIG. 5, when the rotating member 4 is extracted from the engaging hole 19 and the engaging state between the rotating member 4 and the engaging hole 19 is released, the cover member 3 is removed from the position where it cannot be attached and detached. Movement to the attachment / detachment allowable position is allowed.

  3 and 5, the rotating member 4 is formed with an elliptical arc-shaped cam groove (cam track) 41 that penetrates in the thickness direction and extends around the rotation axis A2. The distance from the rotation axis A2 to the cam groove 41 is set to gradually increase from the one end 41A in the extending direction of the cam groove 41 toward the other end 41B. In other words, the distance from the rotation axis A2 to the one end 41A of the cam groove 41 is set to be shorter than the distance from the rotation axis A2 to the other end 41B of the cam groove 41. And the cam groove 41 in this embodiment is formed in the elliptical arc shape of 90 degree | times.

Furthermore, one end 41A of the cam groove 41 is arranged at a position shifted in the X-axis direction from the rotation axis A2 in a state where the rotating member 4 is arranged at the first rotation position (see particularly FIG. 3). On the other hand, the other end 41B of the cam groove 41 is disposed at a position shifted in the X-axis direction from the rotation axis A2 in a state where the rotating member 4 is disposed at the second rotational position (see particularly FIG. 5).
A pair of cam grooves 41 formed as described above are formed at positions that are point-symmetric with respect to the rotation axis A2. That is, in a state where the rotating member 4 is arranged at the first rotation position, the one end portions 41A of the two cam grooves 41 are arranged in the left-right direction so as to sandwich the rotation axis A2 (see particularly FIG. 3). On the other hand, in the state where the rotating member 4 is disposed at the second rotation position, the other end portions 41B of the two cam grooves 41 are arranged in the left-right direction so as to sandwich the rotation axis A2 (see particularly FIG. 5).

The rotation operation member 5 is integrally fixed to the rotation member 4, that is, is attached to the cover member 3 so as to be rotatable together with the rotation member 4. The rotation operation member 5 is held by an operator when the cover member 3 is rotated and when the rotation member 4 is rotated, and is arranged on the outer surface side of the flat plate portion 31 of the cover member 3.
In the present embodiment, the grip 51 of the rotary operation member 5 is formed in a rod shape. The grip 51 is positioned so that one end in the longitudinal direction thereof overlaps the rotation axis A2, and extends in a direction along the outer surface of the cover member 3 so as to be separated from the rotation axis A2. That is, the rotation operation member 5 of the present embodiment has a so-called boat-shaped handle shape. Since the rotation operation member 5 is configured as described above, the rotation position of the rotation member 4 can be easily grasped by the orientation of the grip portion 51.

  The slide member 6 is formed in a flat plate shape, and switching regulation that regulates switching operation of the disconnecting switches SW1 and SW2 (sliding operation upward of the disconnecting switches SW1 and SW2) to turn on the disconnecting switches SW1 and SW2 from OFF to ON. The operation panel board is movable so that it can be linearly moved in the X-axis direction between the position (especially, see FIGS. 5 and 6) and the switching allowable position (especially FIGS. 2 and 3) allowing the switching operation of the disconnectors SW1 and SW2. 16 are attached to the outer surface 16a. In the present embodiment, two slide members 6 are provided so as to individually correspond to the two disconnectors SW1 and SW2.

  Each slide member 6 is formed with a long hole 61 that penetrates in the thickness direction and extends in the moving direction (X-axis direction) of the slide member 6. On the other hand, the operation panel plate 16 is formed with sliding pins 62 that protrude from the outer surface and are inserted into the long holes 61. The sliding pin 62 is slidable in the longitudinal direction of the long hole 61 while being inserted into the long hole 61. As a result, the slide member 6 can move in the X-axis direction. Further, the distal end portion in the protruding direction of the sliding pin 62 protrudes outward from the long hole 61 and has a larger diameter than the base end portion of the sliding pin 62 disposed in the long hole 61. The slide member 6 is prevented from being unexpectedly detached from the operation panel plate 16. A plurality of sets (three sets in this embodiment) of the long holes 61 and the sliding pins 62 are provided so as to be spaced from each other in the same sliding member 6.

The moving direction of the slide member 6 attached as described above from the switching restriction position to the switching permission position is set to a direction from the disconnector SW1, SW2 side toward the opening 17 side.
As shown in FIG. 5, the specific position of the switching restriction position of the slide member 6 in the present embodiment is such that the main body plate portion 63 of the slide member 6 is adjacent to the upper side of the disconnectors SW1 and SW2 that are turned off. It is a position to be placed. For this reason, in the state where the slide member 6 is arranged at the switching restriction position, the disconnectors SW1 and SW2 come into contact with the main body plate portion 63, and therefore the disconnectors SW1 and SW2 cannot be switched from OFF to ON.

  On the other hand, as shown in FIG. 3, the specific position of the switching allowable position of the slide member 6 is between the disconnectors SW1 and SW2 where the main body plate portion 63 of the slide member 6 is ON and the opening portion 17. It is a position to be placed. For this reason, when the slide member 6 is arranged at the switching allowable position and the disconnectors SW1 and SW2 are turned on, the main body plate portion 63 comes into contact with the disconnectors SW1 and SW2, so the slide member 6 is switched. It cannot be moved from the allowable position to the switching restriction position. That is, when the wiring 11 is in the conductive state, the disconnectors SW1 and SW2 prevent the slide member 6 from moving from the switching allowable position to the switching restricting position.

The slide member 6 is integrally formed with a protrusion (follower portion) 67 that is inserted into and engaged with the cam groove 41 of the rotating member 4 in a state where the cover member 3 is disposed at the non-detachable position. The protrusion 67 is inserted into and removed from the cam groove 41 as the cover member 3 moves between the attachable / detachable position and the non-detachable position (see, for example, FIGS. 2 and 6). The protrusion 67 is inserted into and engaged with the cam groove 41 at a position shifted in the X-axis direction from the rotation axis A2 (see, for example, FIGS. 3 and 5).
When the protrusion 67 is engaged with the cam groove 41, the protrusion 67 can slide in the extending direction with respect to the cam groove 41 as the rotating member 4 rotates. However, since the protrusion 67 is formed on the slide member 6 that linearly moves only in the X-axis direction, when the rotary member 4 is rotated, the slide member 6 linearly moves in the X-axis direction.

More specifically, the protrusion 67 is formed from the one end 41A to the other end 41B in the extending direction of the cam groove 41 when the rotary member 4 is rotated from the first rotation position to the second rotation position. Slide. As shown in FIG. 3, in a state where the protrusion 67 is positioned at the one end 41 </ b> A of the cam groove 41, the slide member 6 is disposed at the switching allowable position. Further, as shown in FIG. 5, in a state where the protrusion 67 is positioned at the other end 41 </ b> B of the cam groove 41, the slide member 6 is disposed at the switching restriction position.
Therefore, the cam groove 41 formed on the rotating member 4 and the protrusion 67 formed on the slide member 6 are arranged so that the cover member 3 is disposed at the non-detachable position from the first rotating position of the rotating member 4 to the second rotating position. The cam mechanism 8 is configured to convert the rotational movement to the linear movement of the slide member 6 from the switching allowable position to the switching restriction position.

  In the present embodiment, the sliding length of the protrusion 67 with respect to the cam groove 41 is the length from one end 41A to the other end 41B of the cam groove 41 having an elliptical arc shape of 90 degrees. The angle range in which 4 can be rotated is 90 degrees. Further, the movement length in the X-axis direction of the protrusion 67 (slide member 6) accompanying the rotational movement of the rotating member 4 is the distance from the rotation axis A2 to the one end 41A of the cam groove 41 and the rotation groove A2 to the cam groove. It becomes a difference with the distance to the other end 41B of 41.

As shown in FIGS. 2, 3, and 5, the cam groove 41 and the projection 67 are engaged between the opening 17 of the operation panel plate 16 and the inner surface of the flat plate portion 31 of the cover member 3 facing the opening 17. Done in For this reason, the protrusion 67 is one end (sliding member) extending from the peripheral edge of the opening 17 to the inside of the main surface of the first extension plate 64 of the sliding member 6 extending in the X-axis direction so as to be separated from the rotation axis. 6) and protrudes in the thickness direction. In addition, the one end part of the 1st extension board part 64 is penetrated inside and outside of the cover member 3 via the insertion port 33 of the cover member 3 distribute | arranged to the position which cannot be attached or detached.
Since the rotation axis A2 of the rotating member 4 and the disconnectors SW1 and SW2 are offset from each other in the vertical direction, the main body plate portion 63 and the first extension plate portion 64 of the slide member 6 are in the vertical direction. Are connected to each other by a connecting plate portion 65 extending in the vertical direction. The connecting plate portion 65 is connected to a midway portion in the longitudinal direction of the first extension plate portion 64. Further, the connecting plate portion 65 can be inserted into and out of the cover member 3 through the insertion port 33 of the cover member 3 along with the linear movement of the slide member 6 (see particularly FIGS. 2 and 3).

Further, the slide member 6 is also formed with a second extension plate portion 66 extending in the X-axis direction from the connecting plate portion 65 toward the opening 17 side.
The second extension plate portion 66 is arranged above the first extension plate portion 64 (Z-axis positive direction side) with a space therebetween, and is moved from the switching restriction position of the slide member 6 toward the switching permission position. Furthermore, it protrudes inward from the periphery of the opening 17. Similarly to the first extension plate portion 64 and the connection plate portion 65, the second extension plate portion 66 is connected to the inside and outside of the cover member 3 through the insertion port 33 of the cover member 3 along with the linear movement of the slide member 6. Can be inserted.
As shown in FIGS. 3 and 4, the second extension plate portion 66 is connected to the link mechanism 7 and the Y in the state in which the cover member 3 is disposed at the non-detachable position and the slide member 6 is disposed at the switching allowable position. They are arranged so as to overlap in the axial direction (thickness direction of the operation panel plate 16). In this state, even if the cover member 3 is moved from the non-detachable position to the attachable / detachable position, the link mechanism 7 (particularly the second swing arm 72) contacts the second extension plate portion 66. The movement from the non-detachable position to the attachable / detachable position can be prevented.

On the other hand, as shown in FIGS. 6 and 7, in the state where the cover member 3 is disposed at the attachment / detachment allowable position and the slide member 6 is disposed at the switching restriction position, the second extension plate portion 66 is connected to the link mechanism 7. It is arranged so as to overlap with one swing arm 71 in the X-axis direction. In this state, even if the slide member 6 is moved from the switching restriction position to the switching permission position, the second extension plate portion 66 contacts the first swing arm 71, so that the switching permission from the switching restriction position of the slide member 6 is allowed. The movement to the position can be prevented.
In other words, the slide preventing member that prevents the link mechanism 7 (particularly the first swing arm 71) from moving the slide member 6 from the switching restriction position to the switching permission position in a state where the cover member 3 is disposed at the attachment / detachment permission position. Function as.

In each slide member 6 of the present embodiment configured as described above, the three long holes 61A, 61B, 61C through which the sliding pins 62 are inserted are arranged as follows.
Two of the three long holes 61A and 61B are adjacent to the rotation axis A2 and the protrusion 67 in the X-axis direction, and are arranged in the longitudinal direction and the other end of the first extension plate 64 in the form of a strip plate. It is arranged in. In particular, one long hole 61 </ b> A is located closer to the protrusion 67 than the connection portion of the first extension plate portion 64 to the connection plate portion 65.
On the other hand, the remaining one long hole 61C is shifted from the two long holes 61A and 61B described above to the upper side (Z-axis positive direction) side. More specifically, the remaining one long hole 61C is formed in the main body plate portion 63 and the second extension plate portion 66 (or in the vicinity thereof) located on the Z axis positive direction side of the first extension plate portion 64. Is formed.

The handling of the security device 1 having the interlock structure 2 configured as described above will be described.
When the safety device 1 supplies current to the load device 300 from the power supply device 100 through the storage battery 200 or from the storage battery 200 via the power supply device 100, both the disconnectors SW <b> 1 and SW <b> 2 are turned on to turn on the wiring 11. do it. In this energized state, as shown in FIGS. 2 to 4, the cover member 3 is disposed at the non-detachable position, and the rotating member 4 is disposed at the first rotational position. Moreover, each slide member 6 is each arrange | positioned at the switching permissible position, and the movement to the switching control position is controlled by disconnector SW1, SW2. Furthermore, since the rotating member 4 is connected to the slide member 6 via the cam mechanism 8 because the cover member 3 is arranged at the non-detachable position, the rotating member 4 is changed from the first rotating position to the second rotating position. It is also restricted from rotating toward the head. Further, the rotation member 4 is engaged with the engagement hole 19 of the housing 15 in a state of being arranged at the first rotation position, thereby preventing the cover member 3 from being moved from the non-detachable position. . In the present embodiment, even when the second extension plate portion 66 of the slide member 6 is arranged so as to overlap the link mechanism 7 in the Y-axis direction, the cover member 3 is prevented from moving from the non-detachable position. .
As described above, when the wiring 11 is in the energized state, the cover member 3 cannot be moved from the non-detachable position, and therefore the fuse 12 cannot be attached or detached.

In order to attach and detach the fuse 12, first, the disconnectors SW1 and SW2 are turned off to make the wiring 11 non-conductive, and then, as shown in FIG. What is necessary is just to rotationally move from a rotation position to a 2nd rotation position. During this rotational movement, the slide member 6 is linearly moved in the X-axis direction from the switching allowable position to the switching restriction position by the cam mechanism 8.
When the rotating member 4 and the slide member 6 are moved in this way, the engaged state between the rotating member 4 and the engaging hole 19 is released, and the second extension plate portion 66 also overlaps the link mechanism 7. Therefore, the cover member 3 is allowed to move to the attachment / detachment allowable position.

  Thereafter, as shown in FIGS. 6 and 7, the fuse 12 can be attached / detached by moving the cover member 3 to the attachment / detachment allowable position while holding the rotation operation member 5. Further, in the state where the cover member 3 is arranged at the attachment / detachment allowable position, the movement of the slide member 6 from the switching restriction position to the switching permission position is restricted by the first swing arm 71 of the link mechanism 7, and therefore the disconnector SW1. , SW2 can be reliably prevented from being turned on.

As described above, according to the interlock structure 2 of the first embodiment, the slide member 6 can be moved to the switching restriction position only when the disconnectors SW1 and SW2 are turned off, and the cover member 3 Therefore, it is possible to prevent the fuse 12 from being attached / detached in the energized state. That is, it is possible to prevent an electric shock accident due to an artificial operation error when the fuse 12 is replaced.
In particular, since the operator can move both the slide member 6 and the cover member 3 while holding the same rotation operation member 5, the operator directly touches the slide member 6 to linearly move the slide member 6. As a result, it is possible to prevent a human error from occurring in the arrangement of the slide member 6.
In addition, since the operator can move both the slide member 6 and the cover member 3 while holding the same rotation operation member 5, the fuse 12 can be easily replaced in a short time.

Further, in the interlock structure 2 of the present embodiment, since the cam groove 41 is formed in an elliptical arc shape with the rotation axis A2 of the rotating member 4 as the center, the rotation is performed in a state where the protrusion 67 is engaged with the cam groove 41. The force for rotating the member 4 can be efficiently transmitted to the slide member 6, and the slide member 6 can be smoothly moved linearly. In other words, the rotating member 4 can be smoothly rotated even when the protrusion 67 is engaged with the cam track.
Furthermore, since the insertion / extraction direction of the projection 67 with respect to the cam groove 41 constituting the cam mechanism 8 coincides with the movement direction of the cover member 3 in the vicinity of the non-detachable position, the engagement state between the cam groove 41 and the projection 67 is switched. Can be easily performed.
Further, by adopting the rotating member 4 as a mechanism for preventing the movement of the cover member 3 to the attachment / detachment allowable position, the number of parts constituting this mechanism can be reduced.

Furthermore, in the interlock structure 2 of the present embodiment, since a plurality of long holes 61 and sliding pins 62 for moving the slide member 6 in the linear movement direction are provided, the force for rotating the rotating member 4 is cammed. When the mechanism 8 converts the force to linearly move the slide member 6, it is possible to reliably prevent the slide member 6 from being inclined with respect to the linear movement direction by this force. In other words, the slide member 6 can be linearly moved in a stable state.
In particular, when three or more pairs of the long holes 61 and the sliding pins 62 are provided as in the present embodiment, the rotating member 4 regardless of the relative positions of the rotation axis A2 and the long holes 61 and the sliding pins 62. By reducing the stress applied to the slide member 6 when the cam mechanism 8 transmits the force for rotating the slide member 6 to the slide member 6, the force for rotating the rotary member 4 is converted to the force for moving the slide member 6 linearly more efficiently. can do. That is, the slide member 6 can be linearly moved in a more stable state.

  Furthermore, in the slide member 6 of the present embodiment, the distance between the one long hole 61A and the protrusion 67 is set short by arranging the two long holes 61A and 61B and the protrusion 67 in a line. Even when the rotation member 4 is pressed against the protrusion 67 when the protrusion 4 is moved to the non-detachable position together with the cover member 3 and the protrusion 67 is engaged with the cam groove 41, the plate-like slide is caused by this pressing force. It can suppress that bending deformation arises in the member 6 (especially 1st extension board part 64).

In the first embodiment, the engagement hole 19 formed in the step plate portion 18 is employed as an engagement portion that engages with the rotating member 4 and prevents the cover member 3 from moving to the attachable / detachable position. However, the present invention is not limited to this. For example, a hook-shaped protrusion that protrudes from the outer surface 16a of the operation panel plate 16 and engages with the rotating member 4 disposed at the first rotation position may be employed.
Further, in the first embodiment, as a mechanism for preventing the movement of the cover member 3 to the attachment / detachment allowable position, a combination of the rotation member 4 and the engaging portion formed in the housing 15, and the slide member 6 are combined. A combination of the second extension plate portion 66 and the link mechanism 7 is provided, but it is sufficient that at least one of them is provided.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
In the interlock structure according to this embodiment, as shown in FIG. 8, the protrusion 67 provided to protrude from the slide member 6 is formed in a tapered shape that gradually decreases from the proximal end side in the protruding direction toward the distal end side. Yes. Further, the diameter dimension of the protrusion 67 in the protruding direction is set to be smaller than the width dimension of the cam groove 41. In the illustrated example, it is formed in a truncated cone shape, but is not limited thereto, and may be formed in a cone shape, a pyramid shape, or the like.

In the interlock structure of this embodiment, the protrusion 67 has a tapered shape, so that the relative position between the cam groove 41 and the protrusion 67 is slightly shifted when the protrusion 67 is inserted into the cam groove 41 from the distal end portion thereof. Even if it is, the protrusion 67 can be reliably inserted into the cam groove 41.
Even if the relative position is deviated, the dimension of the proximal end portion in the protruding direction of the projection 67 is set larger than that of the distal end portion. Therefore, as the degree of insertion of the projection 67 into the cam groove 41 proceeds, The relative displacement between 41 and the protrusion 67 can be corrected.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
In the interlock structure according to this embodiment, as shown in FIGS. 9 (b) and 10 (b), a constricted portion 68 that is recessed from the outer peripheral surface of the protrusion 67 is formed on the base end side in the protrusion direction of the protrusion 67. Yes. In the illustrated example, the protrusion 67 is formed in a columnar shape (or a prismatic shape), but may be formed in a tapered shape similar to the case of the second embodiment, for example.

On the other hand, the cam groove 41 formed in the rotating member 4 is formed in an elliptical arc shape that penetrates in the thickness direction of the rotating member 4 and extends around the rotation axis A2 as in the above embodiment. However, in the present embodiment, as shown in FIG. 9B, the width dimension of the end portion 41 </ b> A in the extending direction of the cam groove 41 is such that the end portion (peripheral portion) in the width direction of the cam groove 41 is constricted by the protrusion 67. The diameter of the protrusion 67 is set to be narrower than the diameter of the protrusion 67 so as to enter the portion 68. On the other hand, as shown in FIG. 10B, the width dimension at the other end portion 41 </ b> B in the extending direction of the cam groove 41 is set to be equal to or wider than the diameter dimension of the projecting direction base end portion of the protrusion 67. That is, the width direction end portion (peripheral portion) of the cam groove 41 at the other end portion 41 </ b> B in the extending direction of the cam groove 41 does not enter the constricted portion 68 of the protrusion 67.
In the present embodiment, as shown in FIGS. 9A and 10A, the width dimension of the cam groove 41 gradually increases from one end 41A in the extending direction of the cam groove 41 toward the other end 41B. Although it is wide, it is not limited to this. For example, the width dimension in the middle part between the one end 41A and the other end 41B of the cam groove 41 is either one of the one end 41A or the other end 41B. It may be equivalent to the width dimension.

In the interlock structure of the present embodiment, as shown in FIG. 9, in the state where the rotating member 4 is arranged at the first rotation position, the end in the width direction of the cam groove 41 enters the constricted portion 68 of the protrusion 67. The rotating member 4 is locked to the protrusion 67. In this locked state, the slide member 6 provided with the protrusions 67 can move only in the X-axis direction. Therefore, the cover member 3 that can rotate about the rotation axis A1 extending in the X-axis direction is used. The movement from the non-detachable position to the attachable / detachable position is prevented.
On the other hand, as shown in FIG. 10, in the state where the rotating member 4 is arranged at the second rotational position, the end in the width direction of the cam groove 41 comes out of the constricted portion 68 of the protrusion 67, and the rotating member 4 is engaged with the protrusion 67. Since it is not stopped, the movement of the cover member 3 from the non-detachable position to the attachable / detachable position is allowed.

  As described above, according to the interlock structure of the present embodiment, the mechanism for preventing the movement of the cover member 3 can be configured only by the cam groove 41 of the rotating member 4 and the protrusion 67 of the slide member 6. In other words, the engagement hole 19 for engaging the rotating member 4 with the security device is not required as in the first embodiment, and the number of parts constituting this mechanism can be minimized.

The details of the present invention have been described above by the first to third embodiments of the present invention. However, the technical scope of the present invention is not limited to this, and is appropriately within the scope not departing from the technical idea of the present invention. It can be changed.
For example, the slide blocking member that blocks the movement of the slide member 6 from the switching restriction position to the switching permission position in a state where the cover member 3 is arranged at the attachment / detachment permission position is configured by the link mechanism 7 as in the first embodiment. Not limited to this, as shown in FIGS. 11 and 12, a flat plate-like member 9 that is integrally fixed to the cover member 3 may be used.
In the illustrated example, the plate-like member 9 is formed in a fan shape of 90 degrees with the rotation axis A1 as the center. However, the present invention is not limited to this. Further, the plate-like member 9 may be integrally formed at both ends in the X-axis direction of the side plate portion 32 of the cover member 3, for example, or formed separately from the cover member 3 and then the side plate of the cover member 3. It may be fixed to both ends of the portion 32.

  As in the case of the link mechanism 7, the plate-like member 9 is accommodated in the housing 15 in a state where the cover member 3 is arranged at the non-detachable position as shown in FIG. In this state, when the slide member 6 is arranged at the switching allowable position, the second extension plate portion 66 and the plate-like member 9 of the slide member 6 are arranged so as to overlap in the Y-axis direction. Therefore, even if the cover member 3 is moved from the non-detachable position to the attachable / detachable position, the plate-like member 9 abuts on the second extension plate portion 66, so that the cover member 3 is moved from the non-detachable position to the attachable / detachable position. The movement can be prevented. In other words, in order to move the cover member 3 from the non-detachable position to the attachable / detachable position, the slide member 6 needs to be arranged at the switching restriction position.

  On the other hand, as shown in FIG. 12, in the state where the slide member 6 is arranged at the switching restriction position and the cover member 3 is arranged at the attachment / detachment allowable position, the plate-like member 9 is moved from the opening 17 to the outside of the housing 15. It protrudes and is arranged so as to overlap the second extension plate portion 66 of the slide member 6 in the X-axis direction. For this reason, even if the slide member 6 is moved from the switching restriction position to the switching permission position, the second extension plate portion 66 abuts on the plate-like member 9, so that the sliding member 6 is switched from the switching restriction position to the switching permission position. The movement can be prevented.

In addition, although the three long holes 61 and the sliding pins 62 for linearly moving the slide member 6 are provided, any number may be provided, for example, two sets may be provided.
However, when two sets of long holes 61 and sliding pins 62 are provided in the same slide member 6, the two long holes 61 are located with respect to the rotation axis A <b> 2 of the rotating member 4 disposed in the non-detachable position together with the cover member 3. It is more preferable to dispose them at positions shifted by an equal distance in the upward direction (Z-axis positive direction) and downward direction (Z-axis negative direction). In other words, the two long holes 61 are arranged in the direction (Z-axis direction) orthogonal to the rotation axis A2 of the rotating member 4 disposed at the non-detachable position and the linear movement direction of the slide member 6, and rotate. It is preferable that the distances from the axis A2 are equal to each other.
When the two long holes 61 are arranged in this way, the force for rotating the rotating member 4 is applied to the slide member 6 by the cam mechanism 8 as in the case where the three long holes 61 are provided as in the above embodiment. The stress applied to the slide member 6 during transmission can be reduced, and the force for rotating the rotating member 4 can be converted into a force for efficiently moving the slide member 6 linearly. That is, the slide member 6 can be linearly moved in a stable state.

Further, the cam groove 41 of the rotating member 4 is not limited to penetrating in the thickness direction of the rotating member 4 except in the case of the third embodiment, and at least the protrusion 67 can be inserted, for example, in the opening 17. You may form in the bottomed shape dented from the outer surface of the rotating member 4 which opposes. In this case, the cam groove 41 is not limited to the elliptic arc shape of 90 degrees as in the above embodiment, and may be formed in an elliptic arc shape (elliptical shape) of 360 degrees, for example.
Further, the cam mechanism 8 is not limited to the cam groove 41 and the protrusion 67, and may be configured so that at least the rotational movement of the rotary member 4 can be converted into the linear movement of the slide member 6. For example, instead of the cam groove 41, an elliptical arc-shaped cam protrusion (cam track) that protrudes from the outer surface of the rotation member 4 and extends around the rotation axis A 2 is formed on the rotation member 4. A sandwiching portion (follower portion) that engages with the cam convex portion by sandwiching a part in the extending direction of the portion from the width direction may be formed in the slide member 6.
Further, the cam tracks such as the cam grooves 41 and the cam protrusions forming the cam mechanism 8 are not limited to be formed in an elliptical arc shape, and at least the distance from the rotation axis A2 to one end portion in the extending direction of the cam track is What is necessary is just to set shorter than the distance from rotation axis A2 to the other end part of a cam track. Therefore, the cam track may be formed in a straight line, for example.

Furthermore, the cover member 3 is not limited to being attached to the upper end edge of the opening 17 of the operation panel plate 16, and may be attached to any position as long as at least each member constituting the interlock structure 2 functions. . Therefore, for example, contrary to the above-described embodiment, the cover member 3 can rotate with respect to the operation panel plate 16 about the rotation axis extending in the X-axis direction at the lower end edge of the opening 17 of the operation panel plate 16. It may be attached to.
Further, the cover member 3 is not limited to be rotatable between a position covering the opening 17 of the operation panel plate 16 and a position exposing the opening 17 to the outside, and at least the fuse 12 is attached and detached. It is only necessary to be able to move between the non-detachable position to be blocked and the attach / detach allow position allowing the fuse 12 to be attached / detached. For example, the cover member 3 may be set so as to rotate, rotate, or linearly move between a position where the fuse 12 is pressed (a position where the fuse 12 cannot be attached) and a position where the fuse 12 is released (a position where the fuse 12 is released). Good.

Further, the disconnectors SW1 and SW2 are not limited to the slide switches, and are configured to prevent the switching operation of the disconnectors SW1 and SW2 from being turned on at least in a state where the slide member 6 is disposed at the switching restriction position. For example, a rotary switch or a push button may be used.
Moreover, the number of the wiring 11, the fuse 12, and the disconnectors SW1 and SW2 provided in the security device 1 may be arbitrary. For example, only one disconnector SW1, SW2 may be directly connected to one fuse 12. In this case, only one slide member 6 connected to the rotating member 4 by the cam mechanism 8 may be provided. Further, when a plurality of wirings 11 are provided in the security device 1, a plurality of fuses 12 may be provided, and three or more disconnectors SW1 and SW2 may be provided. In this case, for example, three or more slide members 6 connected to the rotating member 4 by the cam mechanism 8 may be provided.

  Moreover, in the said embodiment, although the storage battery 200 and the load apparatus 300 were described about the structure electrically connected via the power supply device 100, the safety device provided with the interlock structure of this invention is the storage battery 200 and load, for example The present invention can also be applied to a configuration in which the apparatus 300 is directly electrically connected. That is, the wiring between the storage battery 200 and the load device 300 is provided with a safety device comprising the fuse 12 and the two disconnectors SW1 and SW2 similar to the above embodiment, and the safety device is provided with the interlock structure of the present invention. May be.

DESCRIPTION OF SYMBOLS 1 Security apparatus 11 Wiring 12 Fuse 15 Case 19 Engagement hole (engagement part)
SW1, SW2 Disconnector 2 Interlock structure 3 Cover member 4 Rotating member 41 Cam groove (cam track)
5 Rotating operation member 6 Slide member 61, 61A, 61B, 61C Long hole 62 Sliding pin 67 Protrusion (follower part)
68 Constricted part 7 Link mechanism (slide prevention member)
71 First swing arm 8 Cam mechanism 9 Plate member (slide prevention member)
100 power supply device 200 storage battery 300 load device

Claims (8)

Among the circuits for supplying power from the power supply device to the storage battery or from the storage battery to the load device, a fuse for preventing overcurrent provided detachably on the wiring between the power supply device and the storage battery and the wiring between the storage battery and the load device, An interlock structure provided in a security device including a disconnector connected in series to the fuse and switching between conductive / nonconductive state of the wiring,
A cover member that is movable between a non-detachable position that prevents attachment and detachment of the fuse and an attachment / detachment permission position that allows attachment and detachment of the fuse;
A first rotation position that is rotatably attached to the cover member and that prevents the cover member from moving from the non-detachable position to the attachable / detachable position, and a second rotation that allows the cover member to move to the attachable / detachable position. A rotating member capable of rotating between the position,
A rotation operation member that is integrally fixed to the rotation member and is gripped when the cover member is moved and when the rotation member is rotated;
A slide member that is linearly movable between a switching restriction position that restricts a switching operation of the disconnector that switches the wiring from a non-conductive state to a conductive state, and a switching allowable position that permits the switching operation of the disconnector;
A slide blocking member for blocking movement of the slide member from the switching restriction position to the switching permission position in a state where the cover member is arranged at the attachment / detachment permission position;
In the state where the cover member is arranged at the non-detachable position, the rotational movement of the rotating member from the first rotating position to the second rotating position is changed from the switching allowable position of the slide member to the switching restricting position. A cam mechanism for converting into linear movement,
The interlock structure, wherein the disconnector prevents the slide member from moving from the switching allowable position to the switching restricting position when the wiring is in a conductive state.   The cam mechanism is formed on the rotating member and engages with the elliptical arc-shaped cam track extending around the rotation axis of the rotating member, and the cam track with the cover member disposed at a non-detachable position. And a follower portion that is slidable in the longitudinal direction with respect to the cam track in accordance with the rotational movement of the rotating member in a state of being engaged with the cam track. Item 4. The interlock structure according to Item 1. The cam track is a cam groove formed in a recess in the rotating member;
The follower part is a protrusion formed to protrude from the slide member,
The protrusion is arranged at the second rotation position in accordance with the movement of the cover member between the attachment / detachment allowable position and the attachment / detachment position with the slide member arranged at the switching restriction position. The interlock structure according to claim 2, wherein the interlock structure is inserted into and removed from the cam groove of the rotating member. The protrusion is formed in a tapered shape that gradually becomes thinner from the base end side in the protrusion direction toward the tip end side,
4. The interlock structure according to claim 3, wherein at least a diameter dimension of the protrusion in a protruding direction of the protrusion is set to be smaller than a width dimension of the cam groove. The cam groove is formed so as to penetrate the rotating member, and the protrusion can be inserted.
A constricted portion that is recessed from the outer peripheral surface of the projection is formed on the proximal end side in the projecting direction of the projection,
In a state where the rotating member is arranged at the first rotation position, a peripheral portion of the cam groove enters the constricted portion of the protrusion, and the rotation member is arranged at the second rotation position, The width dimension of the cam groove is set so that the peripheral edge of the cam groove comes out of the constricted part,
5. The movement of the cover member from the non-detachable position to the attachable / detachable position is prevented by the peripheral edge portion of the cam groove entering the constricted portion of the protrusion. The interlock structure according to any one of the above. Engagement that is formed integrally with the security device and that prevents the cover member from moving from the non-detachable position to the attachable / detachable position by engaging with the rotating member disposed at the first rotating position. Part
The engagement state between the engagement portion and the rotation member is released by rotating the rotation member from the first rotation position toward the second rotation position. 6. The interlock structure according to any one of items 5. The mechanism for linearly moving the slide member is formed in the slide member and extends in the linear movement direction of the slide member, and is integrally formed in the security device and inserted into the long hole. And a sliding pin that is slidable in the longitudinal direction with respect to the elongated hole.
The interlock structure according to any one of claims 1 to 6, wherein a plurality of sets of the long holes and the sliding pins are provided so as to be spaced apart from each other. The slide member is formed in a flat plate shape,
The follower portion is formed on a peripheral portion of the main surface of the slide member,
A mechanism for linearly moving the slide member is formed in the slide member and extends in the linear movement direction of the slide member, and is formed integrally with the security device and inserted into the long hole. A sliding pin that is slidable in the longitudinal direction with respect to the elongated hole,
The elongated hole and the sliding pin are provided in at least three sets so as to be spaced apart from each other,
The at least two long holes are arranged so as to be adjacent to the follower portion in a linear movement direction of the slide member in a state where the cover member is arranged at the non-detachable position. The interlock structure according to any one of claims 2 to 4.

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