JP6906400B2 - Switch gear ventilation system - Google Patents

Description

An embodiment of the present invention relates to a ventilation device for a switch gear.

Conventionally, there is known a ventilation device including a plurality of louvers that rotate from an open position for opening the ventilation port of the housing to a closed position for covering the ventilation port by increasing the pressure in the housing of the switch gear.

Japanese Unexamined Patent Publication No. 2016-116429

In the conventional ventilation device, the operation of the louvers may vary due to the difference in the position between the louvers and the variation in the shape. Therefore, in this type of switch gear ventilation device, for example, it is preferable to obtain a new configuration in which variations in operation between louvers can be easily suppressed.

The ventilation device of the switch gear of the embodiment includes a ventilation member, a plurality of louvers, and an interlocking mechanism. The ventilation member is provided in the housing of the switch gear, and the ventilation member is provided with a ventilation port. The plurality of louvers are arranged in the first direction and are rotatably provided around a rotation center along a second direction intersecting the first direction, and the ventilation port is opened by an increase in pressure in the housing. It rotates from the open position to the closed position that covers the ventilation port. The interlocking mechanism interlocks the rotations of two or more interlocking target louvers from the open position to the closed position with each other. The interlocking mechanism is provided with a hooking hole and a connecting member having a surface facing the hooking hole and extending in the first direction, and the louver and the connecting member provided for each of the louvers to be interlocked. A connecting portion in which the louvers to be interlocked are connected to each other, and a first portion located on the opposite side of the plurality of louvers to the connecting member and extending in the first direction. In a state where the louver to be interlocked is located at the open position, the louver extends in the second direction from the end of the first portion, is inserted into the hooking hole, and the surface is hooked. It has a hooking portion that limits the rotation of the louver to be interlocked to the closed position, and the hooking portion is deformed by an increase in pressure in the housing to deform the surface of the surface with respect to the second portion. The hook is released, and the louver to be interlocked rotates from the open position to the closed position.

FIG. 1 is an exemplary and schematic side view of the switch gear of the embodiment. FIG. 2 is an exemplary and schematic perspective view of the ventilation device of the embodiment, and is a view from the outside of the housing. FIG. 3 is an exemplary and schematic perspective view of the ventilation device of the embodiment, which is a view with a line of sight different from that of FIG. 2, and is a view from the inside of the housing. FIG. 4 is an exemplary and schematic perspective view of a portion of the ventilator in the ventilator of the embodiment. FIG. 5 is an exemplary and schematic perspective view of a portion of the ventilator of the embodiment including the louver, with the louver in the open position. FIG. 6 is an exemplary and schematic side view of a portion of the ventilator of the embodiment including the louver, with the louver in the open position. FIG. 7 is an exemplary and schematic side view of the portion of the ventilator of the embodiment including the louver, with the louver in the closed position. FIG. 8 is an exemplary and schematic rear view of the portion of the ventilator of the embodiment including the louver, with the louver in the closed position. FIG. 9 is an exemplary and schematic cross-sectional view of the hook portion and the connecting member of the ventilation device of the embodiment, and is a view in a state where the louver is located in the open position. FIG. 10 is an exemplary and schematic rear view of the hook portion and the connecting member of the ventilation device of the embodiment, and is a view in a state where the louver is located in the closed position.

Hereinafter, exemplary embodiments of the present invention will be disclosed. The configurations of the embodiments shown below, as well as the actions and results (effects) brought about by the configurations, are examples. In each of the following figures, for convenience, three directions orthogonal to each other are defined. The X direction is along the front-rear direction and the horizontal direction of the housing 2 of the switch gear 1, the Y direction is along the width direction and the horizontal direction of the housing 2, and the Z direction is the vertical direction (height direction) of the housing 2. And in the vertical direction). Further, in the present specification, the ordinal numbers are given for convenience in order to distinguish parts, parts, etc., and do not indicate the priority order or the order.

FIG. 1 is an exemplary and schematic side view of the switch gear 1 of the present embodiment. The switch gear 1 is installed in, for example, an electric room (not shown) of a building. The switch gear 1 includes a metal housing 2 and a plurality of ventilation devices 3 attached to the housing 2. The switch gear 1 is a so-called metal closed switch gear in which accommodating parts (accommodations) such as a circuit breaker and a protective relay (not shown) are accommodated in the housing 2. A plurality of chambers R are provided in the housing 2, and a plurality of accommodating parts are dispersedly arranged in the plurality of chambers R. The housing 2 has, for example, a circuit breaker, a current transformer for an instrument, and a power receiving board that mainly receives power, and a cable for supplying a load via a circuit breaker, a current transformer, a zero-phase current transformer, and the like. Includes a feeder board from which the current transformer is pulled out, a bus connecting board that separates the main bus for each system with a circuit breaker, and the like. The housing 2 is also referred to as a board, a closed box, or the like.

The housing 2 is, for example, configured in a rectangular parallelepiped box shape. The housing 2 has a plurality of walls such as a top wall 2a, a bottom wall 2b, a front wall 2c, a rear wall 2d, and a pair of side walls 2e. In FIG. 1, only one of the pair of side walls 2e is shown. The top wall 2a, the bottom wall 2b, the front wall 2c, the rear wall 2d, and the pair of side walls 2e are the outer walls of the housing 2, respectively.

Both the top wall 2a and the bottom wall 2b extend along a direction (XY plane) orthogonal to the Z direction, and are provided parallel to each other at intervals in the Z direction. Both the front wall 2c and the rear wall 2d extend along a direction (YZ plane) orthogonal to the X direction, and are provided parallel to each other at intervals in the X direction. Each of the pair of side walls 2e extends along a direction (XZ plane) orthogonal to the Y direction, and is provided parallel to each other at intervals in the Y direction. The top wall 2a is also referred to as an upper wall, the bottom wall 2b is also referred to as a lower wall, the front wall 2c is also referred to as a front wall or a peripheral wall, and the rear wall 2d is also referred to as a back wall or a peripheral wall. The side wall 2e is also referred to as a peripheral wall.

Further, the housing 2 is provided with a door 8. The door 8 constitutes at least a part of the front wall 2c. The door 8 is rotatably supported on one side wall 2e via a hinge (not shown) having a rotation center (rotation axis) extending along the Z direction. The door 8 can be moved between a closed position (FIG. 1) that covers the inside of the housing 2 and an open position (not shown) that opens the inside of the housing 2 by rotating around the center of rotation. be.

Further, a plurality of partition walls 2h are provided in the housing 2. These plurality of partition walls 2h partition the inside of the housing 2 into a plurality of chambers R. The partition wall 2h is also referred to as an inner wall.

The plurality of ventilators 3 are provided in one of the plurality of chambers R, the chamber R1. The plurality of ventilation devices 3 include a ventilation device 3A provided on the rear wall 2d and a ventilation device 3B provided on the partition wall 2h.

FIG. 2 is an exemplary and schematic perspective view of the ventilation device 3A of the present embodiment, and is a view from the outside of the housing 2. FIG. 3 is an exemplary and schematic perspective view of the ventilation device 3A of the present embodiment, and is a view from the inside of the housing 2. The ventilation device 3A includes a ventilation member 10, a plurality of louvers 11, a cover 12, and an interlocking mechanism 13.

FIG. 4 is an exemplary and schematic perspective view of a part of the ventilation member 10 in the ventilation device 3A of the present embodiment. FIG. 5 is an exemplary and schematic perspective view of a portion of the ventilation device 3A of the present embodiment including the louver 11, and is a view in a state where the louver 11 is located in the open position. As shown in FIGS. 2 to 5, the ventilation member 10 has a pair of walls 10a and 10b and a tubular portion 10c. The ventilation member 10 is made of, for example, a metal material.

The wall 10a is included in the rear wall 2d of the housing 2 and extends along a direction (YZ plane) orthogonal to the X direction. As shown in FIG. 4, the wall 10a is provided with an opening 10d. The opening 10d is composed of a plurality of holes 10e penetrating the wall 10a in the thickness direction (X direction) of the wall 10a.

As shown in FIGS. 3, 5 and 6, the wall 10b is provided inside the housing 2 and extends along a direction (YZ plane) orthogonal to the X direction. The wall 10b is provided parallel to the wall 10a at a distance from the wall 10a in the X direction. The wall 10b is provided with an opening 10f. The opening 10f is composed of a plurality of holes 10g penetrating the wall 10b in the thickness direction (X direction) of the wall 10b. As an example, the opening 10f is composed of five holes 10g. The plurality of holes 10g are arranged so as to be spaced apart from each other in the Z direction. Each hole 10g is formed in a rectangular shape with the Y direction as the longitudinal direction in the line of sight along the X direction (FIG. 8).

As shown in FIG. 3, the tubular portion 10c is provided over a pair of walls 10a and 10b. The opening 10d of the wall 10a and the opening 10f of the wall 10b communicate with each other through the internal space 10h (FIGS. 3 and 4) of the tubular portion 10c. The tubular portion 10c is composed of a plurality of members. The tubular portion 10c may be composed of one member. The internal space 10h of the tubular portion 10c constitutes a ventilation port 10i together with the opening 10d of the wall 10a and the opening 10f of the wall 10b.

FIG. 6 is an exemplary and schematic side view of a portion of the ventilation device 3A of the present embodiment including the louver 11, and is a view in a state where the louver 11 is located at the open position P1. FIG. 7 is an exemplary and schematic side view of a portion of the ventilation device 3A of the present embodiment including the louver 11, and is a view in a state where the louver 11 is located at the closed position P2. FIG. 8 is an exemplary and schematic rear view of the portion of the ventilation device 3A of the present embodiment including the louver 11, and is a view in a state where the louver 11 is located at the closed position P2.

As shown in FIGS. 5 to 8, louvers 11 are provided for each hole 10 g of the wall 10b. That is, in this embodiment, five louvers 11 are provided as an example. The five louvers 11 are arranged in the Z direction as an example. The louver 11 is connected to the wall 10b of the ventilation member 10 by a hinge 14. The louver 11 is rotatably supported by a hinge 14 between an open position P1 (FIGS. 5 and 6) that opens the ventilation port 10i and a closed position P2 (FIGS. 7 and 8) that covers the ventilation port 10i. .. Specifically, the louver 11 is rotatably provided around the rotation center Ax along the Y direction intersecting the Z direction, opening the hole 10g of the wall 10b at the open position P1 and opening the hole 10b of the wall 10b at the closed position P2. 10 g is covered from the side of the wall 10b opposite to the wall 10a. The louver 11 is located at the open position P1 when the pressure inside the housing 2 is normal. The louver 11 is also referred to as a flap. The Z direction (vertical direction of the housing 2) is an example of the first direction, and the Y direction (width direction of the housing 2) is an example of the second direction.

As shown in FIGS. 5 and 6, the plurality of louvers 11 are formed in the same shape as each other. The louver 11 has a base plate portion 11a and a pair of connecting plate portions 11b. The base plate portion 11a is formed in a flat plate shape and covers the hole 10g of the wall 10b with the louver 11 located at the closed position P2. The end portion (upper end portion) of the base plate portion 11a on the rotation center Ax side is connected to the wall 10b via a plurality of hinges 14. The plurality of hinges 14 are provided so as to be spaced apart from each other in the Y direction. In FIG. 5 and the like, as an example, an example in which two hinges 14 are provided for one louver 11 is shown, but the number of hinges 14 may be one, or three or more. There may be. The louver 11 and the hinge 14 are made of, for example, a metal material.

As shown in FIG. 5, the pair of connecting plate portions 11b are provided at the end portion of the base plate portion 11a in the Y direction and the end portion in the direction opposite to the Y direction. The connecting plate portion 11b extends along a direction (XZ plane) orthogonal to the Y direction. Specifically, the connecting plate portion 11b extends from the base plate portion 11a to the side opposite to the wall 10b of the base plate portion 11a, and the base plate is in a state where the louver 11 is located at the closed position P2 (FIG. 7). The posture extends from the portion 11a in the opposite direction to the X direction.

As shown in FIGS. 3 and 7, the cover 12 is provided on the side of the wall 10b of the ventilation member 10 opposite to the wall 10a. The cover 12 is formed in a frame shape (annular shape) surrounding the upper, lower, and side surfaces of the plurality of louvers 11. Specifically, the cover 12 has a top wall 12a, a bottom wall 12b, and a pair of side walls 12c. The cover 12 is made of, for example, a metal material.

Both the top wall 12a and the bottom wall 12b extend along a direction (XY plane) orthogonal to the Z direction, and are provided parallel to each other at intervals in the Z direction. The top wall 12a is provided above the plurality of louvers 11, and the bottom wall 12b is provided below the plurality of louvers 11. That is, a plurality of louvers 11 are arranged between the top wall 12a and the bottom wall 12b. Each of the pair of side walls 12c extends along a direction (XZ plane) orthogonal to the Y direction, and is provided parallel to each other at intervals in the Y direction. The pair of side walls 12c are provided on both sides of the plurality of louvers 11. That is, a plurality of louvers 11 are arranged between the pair of side walls 12c. The top wall 12a, the bottom wall 12b, and the pair of side walls 12c are also referred to as walls.

The interlocking mechanism 13 shown in FIGS. 5 to 7 interlocks the rotation of the interlocking target louver 11 from the open position P1 (FIGS. 5 and 6) to the closed position P2 (FIG. 7). In the present embodiment, the interlocking targets of the interlocking mechanism 13 are all (five) louvers 11 as an example. The interlocking mechanism 13 is also referred to as a connecting mechanism.

As shown in FIGS. 5 and 6, the interlocking mechanism 13 has a connecting portion 15 in which a plurality of louvers 11 are connected to each other, and a hooking portion 16.

The connecting portion 15 has a pair of connecting members 17 and a plurality of rods 18. The connecting member 17 and the rod 18 are made of, for example, a metal material. The connecting member 17 is provided for each connecting plate portion 11b of the louver 11. A plurality of louvers 11 are arranged between the pair of connecting members 17. The connecting member 17 is formed in a strip shape extending in the Z direction, and is provided in a posture in which the thickness direction is along the Y direction. The connecting member 17 is overlapped with the connecting plate portion 11b of the louver 11 in the Y direction. The connecting member 17 is provided with a hole 17a for each louver 11. That is, the connecting member 17 is provided with a plurality (five) holes 17a. The hole 17a penetrates the connecting member 17 along the thickness direction of the connecting member 17, that is, the axial direction (Y direction) of the rotation center Ax. Further, as shown in FIG. 6, of the plurality of holes 17a, two holes 17aA provided corresponding to the louvers 11 located at both ends (upper end, lower end) of the plurality of louvers 11 arranged in a row. , 17aB are formed in a circular shape in the line of sight from the axial direction of the rotation center Ax. Further, among the plurality of louvers 11 arranged in a row, each hole 17aC provided corresponding to the louvers 11 other than both ends is an elongated hole whose longitudinal direction is along the Z direction. That is, one or more of the plurality of holes 17a are elongated holes.

Further, as shown in FIGS. 5 and 6, the connecting member 17 is provided with a hooking hole 17c. The hooking holes 17c are provided above the plurality of holes 17a. The hooking hole 17c is also referred to as a hole.

As shown in FIG. 5, the rod 18 connects the louver 11 and the connecting member 17. Specifically, the rod 18 has a shaft portion 18a and a head portion 18b. The shaft portion 18a extends in the Y direction and is inserted into the hole 17a of the connecting plate portion 11b of the louver 11. The head portion 18b is connected to the end portion of the shaft portion 18a and extends in the radial direction of the shaft portion 18a. The head 18b is overlapped on the side opposite to the connecting plate portion 11b of the connecting member 17. The rod 18 is attached to the connecting plate portion 11b in a state where the rod 18 is prevented from coming off from the hole 17a of the connecting plate portion 11b. As an example, the shaft portion 18a is fixed to the connecting plate portion 11b to prevent it from coming off. As another example, the shaft portion 18a may be prevented from coming off by being crimped at the end portion opposite to the head portion 18b. In the case of caulking, the shaft portion 18a and thus the rod 18 can be made rotatable with respect to the connecting plate portion 11b. The rod 18 is also referred to as a shaft member.

As shown in FIG. 5, the hooking portion 16 is provided for each connecting member 17 of the connecting portion 15. That is, two (plural) sets of the hooking portion 16 and the connecting member 17 are provided. The hook portion 16 is fixed to the side wall 12c of the cover 12 via the fixing plate 19.

FIG. 9 is an exemplary and schematic cross-sectional view of the hooking portion 16 and the connecting member 17 of the ventilation device 3A of the present embodiment, and is a view in a state where the louver 11 is located at the open position P1. FIG. 10 is an exemplary and schematic rear view of the hooking portion 16 and the connecting member 17 of the ventilation device 3A of the present embodiment, and is a view in a state where the louver 11 is located at the closed position P2. In addition, in FIGS. 9 and 10, one of two sets of the hooking portion 16 and the connecting member 17 is shown.

As shown in FIGS. 5, 6 and 9, the connecting member 17 is hooked on the hooking portion 16 with the louver 11 located at the open position P1. Specifically, as shown in FIG. 9, the hooking portion 16 has a plurality of plate portions 16a to 16c. The plate portion 16a extends downward from the lower end portion of the fixing plate 19. The plate portion 16b extends substantially horizontally from the lower end portion of the plate portion 16a and is inserted into the hooking hole 17c of the connecting member 17. The plate portion 16b supports the upper end portion 17e of the surface 17d of the connecting member 17 facing the hooking hole 17c. That is, in the hooking portion 16, the surface 17d of the connecting member 17 is hooked on the plate portion 16b. The plate portion 16c extends obliquely downward and downward from the plate portion 16b from the end portion of the plate portion 16b opposite to the plate portion 16a. The hook portion 16 is made of, for example, a metal material. The plate portions 16a to 16c are also referred to as portions and extension portions, respectively.

In the hooking portion 16 having the above configuration, the surface 17d of the connecting member 17 is hooked on the plate portion 16b in a state where the louver 11 is located at the open position P1 (FIG. 9). In this state, the hooking portion 16 limits the rotation of the louver 11 to the closed position P2. From this state, as shown in FIG. 10, when the connecting member 17 moves downward, the plate portion 16b is pushed downward by the surface 17d of the connecting member 17, the hook portion 16 is deformed, and the plate portions 16b, 16c Comes out of the hooking hole 17c of the connecting member 17. That is, the hook of the connecting portion 15 with respect to the hooking portion 16 is released. The deformation of the hooking portion 16 at this time may be a plastic deformation or an elastic deformation. In the case of elastic deformation, that is, when the hooking portion 16 is configured as an elastic member (spring member), the connecting member 17 can be easily returned to the hooking hole 17c, and the connecting member 17 is repeatedly used as compared with the plastic deformation. Can be increased.

In the ventilation device 3A having the above configuration, when the switch gear 1 is normal, the connecting member 17 is hooked on the hook portion 16 with the louver 11 located at the open position P1 (FIGS. 5 and 6). In this case, the hooking portion 16 limits the rotation of the louver 11 to the closed position P2 via the connecting portion 15. In this state, the housing 2 is ventilated (ventilated) through the ventilation port 10i, and the heat inside the housing 2 is released to the outside of the housing 2.

On the other hand, when a high-temperature or high-pressure gas is generated in the housing 2 due to an abnormality of the switch gear 1 or the like and the pressure in the housing 2 increases, the pressure in the housing 2 increases from the open position P1. A pressing force that pushes the louvers 11 in the direction of rotation to the closed position P2 acts on each louver 11. This pressing force is transmitted to the connecting member 17 via the louver 11 and pushes the connecting member 17 downward. As a result, the hook of the connecting member 17 with respect to the hooking portion 16 is disengaged, and the louver 11 rotates from the open position P1 to the closed position P2. At this time, the force for rotating the louver 11 includes the pressing force and gravity, which are the pressures in the housing 2 acting on the louver 11. In this way, the interlocking mechanism 13 interlocks the rotations of all the louvers 11 from the open position P1 to the closed position P2 by disengaging the hooking of the connecting member 17 with respect to the hooking portion 16. That is, the operations of the louvers 11 are synchronized.

Further, the pressing force does not evenly act on the plurality of louvers 11, and a pressing force larger than that of the other louvers 11 acts on one louver 11, and the pressing force causes the connecting member 17 to be disengaged from the hooking portion 16. In that case, for example, each part operates as follows. When the hooking of the connecting member 17 with respect to the hooking portion 16 is disengaged, one louver 11 rotates from the open position P1 to the closed position P2 due to the pressing force or gravity acting on the louver 11. Then, the pressing force acting on one louver 11 is transmitted to the other louvers 11 via the connecting member 17 and the rod 18. Therefore, the other louver 11 rotates from the open position P1 to the closed position P2 by the pressing force or gravity directly acting on the louver 11 and the pressing force transmitted from one louver 11. In this way, the rotations of all the louvers 11 from the open position P1 to the closed position P2 are interlocked with each other. That is, the operations of the louvers 11 are synchronized.

By covering the ventilation port 10i with each louver 11 located at the closed position P2 in this way, it is possible to prevent the gas generated in the housing 2 from being ejected from the ventilation port 10i to the outside of the housing 2.

The configuration of the ventilation device 3B is the same as the configuration of the ventilation device 3A.

As described above, in the present embodiment, the ventilation device 3 includes a ventilation member 10, a plurality of louvers 11, and an interlocking mechanism 13. The ventilation member 10 is provided in the housing 2 of the switch gear 1, and the ventilation member 10 is provided with a ventilation port 10i. The louver 11 is supported by the ventilation member 10 and rotates from an open position P1 that opens the ventilation port 10i to a closed position P2 that covers the ventilation port 10i due to an increase in pressure in the housing 2. The interlocking mechanism 13 interlocks the rotation of the louver 11 to be interlocked from the open position P1 to the closed position P2. According to such a configuration, for example, the interlocking mechanism 13 interlocks the rotation of the louvers 11 to be interlocked from the open position P1 to the closed position P2 with each other, so that the plurality of louvers 11 move from the open position P1 to the closed position P2. It is easy to suppress the variation in the operation of. Therefore, the ventilation port 10i can be closed stably.

Further, in the present embodiment, the interlocking mechanism 13 has a connecting portion 15 and a hooking portion 16. The connecting portion 15 connects the louvers 11 to be interlocked with each other. That is, the interlocking target louver 11 is also an interlocking target of the connecting portion 15 (interlocking mechanism 13). Further, the connecting portion 15 is hooked on the hooking portion 16 with the interlocking target louver 11 located at the open position P1, and the hooking portion 16 limits the rotation of the interlocking target louver 11 to the closed position P2. Then, due to the increase in pressure in the housing 2, the hook of the connecting portion 15 with respect to the hooking portion 16 is disengaged, and the louver 11 to be interlocked rotates from the open position P1 to the closed position P2. According to such a configuration, for example, the hook of the connecting portion 15 to the hooking portion 16 is released due to the increase of the pressure in the housing 2, so that a drive device for disengaging the connecting portion 15 to the hooking portion 16 is provided. No need.

Further, in the present embodiment, the plurality of louvers 11 are arranged in the Z direction (first direction). Further, each louver 11 is rotatably provided around the rotation center Ax along the Y direction (second direction) intersecting the Z direction. Further, the connecting portion 15 has a connecting member 17 and a rod 18. The connecting member 17 extends in the Z direction. The rod 18 is provided for each louver 11 to be interlocked and connects the louver 11 and the connecting member 17. According to such a configuration, a plurality of louvers 11 can be connected with a relatively simple configuration of, for example, a connecting member 17 and a rod 18.

Further, in the present embodiment, the connecting member 17 is provided with a hole 17a into which the rod 18 is inserted for each louver 11 to be interlocked. One or more of the plurality of holes 17a are elongated holes whose longitudinal direction is along the Z direction. According to such a configuration, for example, since one or more of the plurality of holes 17a are elongated holes, the shape error of the louver 11, the connecting member 17, and the rod 18 can be absorbed by the elongated holes. Therefore, it is easy to assemble the connecting portion 15 to the louver 11.

Further, in the present embodiment, a hinge 14 is provided for each louver 11 and supports the louver 11 so as to be rotatable from the open position P1 to the closed position P2. According to such a configuration, for example, the louver 11 tends to rotate relatively smoothly. Further, in the present embodiment, since the louver 11 is arranged so that the gravity acting on the louver 11 rotates the louver 11 from the open position P1 to the closed position P2, the hooking portion 15 is hooked on the hooking portion 16. When it comes off, the louver 11 rotates downward due to a force including gravity.

In the present embodiment, an example in which the interlocking target of the interlocking mechanism 13 is all louvers 11 is illustrated, but the present invention is not limited to this. For example, the interlocking target of the interlocking mechanism 13 may be two to four louvers 11 out of the five louvers 11. That is, the interlocking target of the interlocking mechanism 13 may be two or more louvers 11.

Further, in the present embodiment, an example in which a plurality of louvers 11 are arranged in the Z direction and the rotation center Ax of each louver 11 is along the Y direction is exemplified, but the present invention is not limited to this. For example, a plurality of louvers 11 may be arranged in the Y direction or the X direction (first direction), and the rotation center Ax of each louver 11 may be arranged along the Z direction (second direction).

Further, in the present embodiment, an example is exemplified in which each of the holes 17aC provided corresponding to the louvers 11 other than both ends among the plurality of louvers 11 arranged in a row is a long hole, but the present invention is not limited to this. .. Of the plurality of holes 17a, any hole 17a may be an elongated hole.

Further, in the present embodiment, an example in which the louver 11 is rotatably supported by the hinge 14 has been exemplified, but the present invention is not limited to this. For example, the louver may be rotatably supported by a deformable plate-shaped member instead of the hinge 14. In this case, the plate-shaped member may be integrally formed with the louver 11.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Switch gear, 2 ... Housing, 3 ... Ventilation device, 10 ... Ventilation member, 10i ... Ventilation port, 11 ... Louver, 13 ... Interlocking mechanism, 14 ... Hinge, 15 ... Connecting part, 16 ... Hooking part, 16a ... Plate part (first part), 16b ... Plate part (second part), 17 ... Connecting member, 17a ... Hole, 17c ... Hooking hole, 17d ... Surface, 18 ... Rod, Ax ... Rotation center, P1 ... Open position, P2 ... Closed position.

Claims (3)

A ventilation member provided in the housing of the switch gear and provided with a ventilation port,
The ventilation is arranged in the first direction and is rotatably provided around the center of rotation along the second direction intersecting the first direction. Multiple louvers that rotate to a closed position that covers the mouth,
An interlocking mechanism that interlocks the rotation of two or more interlocking louvers from the open position to the closed position with each other.
Equipped with a,
The interlocking mechanism
A connecting member provided with a hooking hole and having a surface facing the hooking hole and extending in the first direction, and a rod provided for each of the interlocking target louvers and connecting the louver and the connecting member. With, and a connecting portion in which the louvers to be interlocked are connected to each other,
From the end of the first portion in a state where the first portion located on the opposite side of the plurality of louvers to the connecting member and extending in the first direction and the louver to be interlocked are located at the open position. A hooking portion that extends in the second direction, is inserted into the hooking hole, and has a hooked portion on which the surface is hooked, and restricts the rotation of the louver to be interlocked to the closed position.
Have,
Due to the increase in pressure in the housing, the hooking portion is deformed and the surface is disengaged from the second portion, and the louver to be interlocked rotates from the open position to the closed position of the switch gear. Ventilation system. The connecting member is provided with a hole into which the rod is inserted for each of the louvers to be interlocked.
The ventilation device for a switch gear according to claim 1 , wherein one or more of the plurality of holes are elongated holes whose longitudinal direction is along the first direction. The switch gear ventilation device according to claim 1 or 2 , which is provided for each louver and includes a hinge that rotatably supports the louver from the open position to the closed position.

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