JP5414344B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device capable of suppressing generation of a gap when an opening is closed.

  2. Description of the Related Art Conventionally, for example, an opening / closing device described in Patent Document 1 below is known.

  This conventional opening / closing device has a movable opening / closing body main body that opens and closes an opening, and a cross-section that is provided at a front end of the opening / closing body in the closing movement direction and contacts a contacted portion such as a lower frame when the opening is closed. And a contact body such as an inverted T-shaped draining member.

JP 11-117641 A

  However, in the above conventional switchgear, for example, when the contact body is deformed due to thermal expansion during a fire or the like, the contact body is lifted from the contacted portion, and a large amount is formed between the contact body and the contacted portion. There may be gaps.

  This invention is made in view of such a point, and it aims at providing the opening / closing apparatus which can suppress generation | occurrence | production of a clearance gap at the time of closing of an opening part.

The opening / closing apparatus according to claim 1 is provided at a movable opening / closing body main body for opening / closing the opening, and at a front end of the opening / closing body in the closing movement direction, and contacts the contacted portion when the opening is closed. A contact support and the contact support, and when the opening is closed, when the contact support is separated from the contacted part, the contacted support is moved relative to the contact support. A contact movable body that maintains a contact state with the contact portion; and a regulating body that is provided on the contact support body and restricts lateral movement of the contact movable body with respect to the contact support body. The contact support body includes a plate portion whose lower surface portion is a contact surface portion that contacts the contacted portion when the opening is closed, and the lower surface portion of the contact movable body A main body part that is a contact surface part that comes into contact with the contacted part when the opening is closed, and a protruding part at the upper end of the main body part In the state before the contact surface portion of the main body portion contacts the contacted portion, the contact surface portion of the main body portion is placed and supported by the plate portion of the contact support body. A projecting plate portion that separates from the plate portion of the abutting support when it abuts on the abutting portion, and the restricting body contacts the longitudinal end surface of the projecting plate portion by the abutting movable body. It has a control part which controls the movement to the side to the contact support .

The opening / closing device according to claim 2 is the opening / closing device according to claim 1, wherein the regulating body prevents the protruding plate portion of the contact movable body from contacting the opening / closing body body when the opening is closed. It is what has.

The opening / closing device according to claim 3 is the opening / closing device according to claim 1 or 2, wherein the restricting body moves when the contact movable body moves in the closing movement direction and the opening movement direction with respect to the contact support body. This has a movable body guide part for guiding the tip of the protruding plate part .

The switchgear according to claim 4 is the switchgear according to any one of claims 1 to 3, wherein the contact support body has a cylindrical fitting receiving part, and the regulating body is in the fitting receiving part. And a fitting portion that is fitted and held in the fitting receiving portion, and includes an attaching means for fixedly attaching the fitting portion to the fitting receiving portion.

The switchgear according to claim 5 is the switchgear according to any one of claims 1 to 4, wherein the protruding plate portion of the abutting movable body is other than the left and right end portions of the upper end portion of the body portion that is longitudinal in the left-right direction. The left and right ends of the main body protrude from the longitudinal end surface of the abutting support toward the side.

The switchgear according to claim 6 is the switchgear according to any one of claims 1 to 5, wherein the contact support is attached to the draining member of the switchgear body by an attachment means, and the contact support is attached to the contact support. Is formed by penetrating a vertically long mounting elongated hole, and when the fastening fixing force of the mounting means is weakened by heat, the mounting means is adapted to the deformation according to the thermal expansion of the draining member. It moves in the mounting slot.

The switchgear according to claim 7 is the switchgear according to claim 6, wherein the mounting means is constituted by a bolt, a nut and a washer, and the washer has a lower heat-resistant temperature than the bolt and the nut. is there.

  According to the first aspect of the present invention, the abutting movable body that maintains the abutting state with the abutted portion by a relative operation with respect to the abutting support when the abutting support is separated from the abutted portion. And the restricting body restricts the lateral movement of the abutting movable body with respect to the abutting support body, so that the generation of a gap can be suppressed when the opening is closed.

  According to the invention which concerns on Claim 2, it can prevent appropriately a contact movable body contact | abutting with an opening-and-closing body main body by the contact prevention part of a control body.

  According to the invention which concerns on Claim 3, a contact movable body can be appropriately guided by the movable body guide part of a control body at the time of the movement of the contact movable body with respect to the contact support body in the closing movement direction and the opening movement direction.

  According to the invention which concerns on Claim 4, the fitting part of a control body can be appropriately fixedly attached to the fitting receiving part of an abutting support body by an attachment means.

It is a partial front view of the switchgear concerning one embodiment of the present invention. It is a partial top view of an opening / closing apparatus same as the above. It is AA sectional drawing in FIG. It is a front view of the opening / closing apparatus same as the above. It is a principal part perspective view of an opening / closing apparatus same as the above. It is a principal part disassembled perspective view of the opening / closing apparatus same as the above. It is a principal part disassembled perspective view of the opening / closing apparatus same as the above. It is a principal part perspective view of an opening / closing apparatus same as the above. It is a rear view of the contact support body of the front side of the opening / closing apparatus same as the above. It is a figure which shows the attachment means which attaches a contact support body same as the above to a draining member. It is a figure which shows the state which the contact support body and contact movable body same as the above contact | abutted to the to-be-contacted part. It is a figure which shows the state which the contact support body same as the above floated from the to-be-contacted part.

  An embodiment of a switchgear according to the present invention will be described with reference to the drawings.

  In FIG. 4, 1 is an opening / closing device, and this opening / closing device 1 is a shutter device for disaster prevention that forms a disaster prevention section in a space portion of a structure such as a house, a building, a warehouse, or a factory.

  As shown in FIG. 4, the opening / closing device 1 opens the opening 2 by moving upward in the opening movement direction, and opens substantially the entire opening 2 by moving downward in the closing movement direction. A substantially plate-like opening / closing body main body 3 that is movable up and down, that is, can be moved up and down is provided.

  Then, in the lower end portion (draining portion) that is the distal end portion in the closing movement direction of the opening / closing body main body 3, the distal end body 4 in the closing movement direction such as a fireproof draining cover body having a left-right direction that opens and closes the lower end portion of the opening 2 Is attached. These opening / closing body main body 3 and the closing movement direction distal end body 4 constitute an opening / closing body 5 such as a shutter curtain that opens and closes the entire opening 2. The distal end 4 in the closing movement direction can be attached later to the lower end of the opening / closing body 3 of the existing opening / closing device 1.

  In addition, the opening / closing device 1 is a pair of left and right guide rails having a longitudinal direction that guides the left and right ends of the opening / closing body 5 along the vertical direction when the opening / closing body 5 is raised and lowered. The guide body 7 is provided.

  Further, the opening / closing device 1 is disposed between the upper ends of both guide bodies 7 and a storage case body 8 such as a shutter box having a lower surface opening in which the opening / closing body body 3 of the opening / closing body 5 is stored when the opening 2 is opened. The lower frame body 9 is provided between the lower ends of the guide bodies 7 and is a contacted portion with which the front end body 4 in the closing movement direction of the opening / closing body 5 contacts when the opening 2 is closed.

  In the storage case body 8, a winding body (not shown) for winding the opening / closing body main body 3 so as to be rewound is disposed rotatably. The upper end part which is a front-end | tip part of the opening movement direction of the opening / closing body main body 3 is attached to the wound body. When the opening / closing body main body 3 moves upward together with the distal end body 4 in the closing movement direction while being wound around the winding body by the rotation of the winding body in the winding direction, the opening / closing body 5 is opened in a substantially cylindrical shape. 2 opens. Further, when the opening / closing body 3 is moved downward together with the front end body 4 in the closing movement direction while being unwound from the winding body by the rotation of the winding body in the rewinding direction, the opening / closing body 5 becomes a substantially flat plate-like closed state. The opening 2 is closed by the open / close body 5 in the state.

  As shown in FIG. 1 to FIG. 4 and the like, the opening / closing body main body 3 includes a metal slat 11 which is a plurality of longitudinally opening / closing body constituting members connected to each other so as to be rotatable with each other. , And a metal integrated draining member (roll molded product) 12 having a longitudinally extending shape in the left-right direction and a substantially inverted T-shaped cross section, which is rotatably connected to the slat 11 at the lowermost end.

  The draining member 12 is provided at a substantially horizontal horizontal plate portion 13, a substantially vertical vertical plate portion 14 rising from a substantially central portion in the front-rear direction of the horizontal plate portion 13, and an upper end portion of the vertical plate portion 14. A connecting plate portion 15 having a substantially C-shaped cross section is rotatably connected to the lowermost slat 11. A resin cover member 16 that comes into contact with the guide body 7 is attached to the left and right ends of the draining member 12.

  The front end body 4 in the closing movement direction is fixed to the lower end portion of the opening / closing body main body 3 and is in contact with the lower frame body 9 when the opening 2 is closed. Even if the abutment support 21 is lifted away from the lower frame body 9 when the opening 2 is closed, the distance from the lower frame body 9 is supported. When the distance is less than a predetermined value, the contact of a single seat plate or the like in the left-right direction that maintains the contact state with the lower frame body 9 by the downward movement, which is a relative operation with respect to the contact support 21 And a movable body 22. Moreover, the closing body direction front end body 4 is a fixed body such as a cap that is fixed to each of the left and right ends of each contact support body 21 and restricts the outward movement of the contact movable body 22 relative to the contact support body 21. Has 23.

  As shown in FIGS. 3, 5 to 10, etc., the contact support 21 has a substantially vertical first plate portion 31, and the first plate portion 31 is attached to the draining member 12 by the attachment means 32. It is fixedly attached to the vertical plate portion 14 of this. Then, substantially the entire front and rear surfaces of the vertical plate portion 14 are covered with the first plate portions 31 of the both abutment supports 21. On the surface of the first plate portion 31 facing the vertical plate portion 14, a plurality of ridge portions 30 that are parallel to each other are formed.

  A vertically long mounting slot 33 is formed through the first plate 31 in the left-right direction center (near the center), and a substantially circular mounting hole is formed at both left and right ends of the first plate. 34 is formed through. In the vertical plate portion 14 of the draining member 12, three substantially circular holes 35 penetrate the left and right center portions (near the center) and both left and right end portions corresponding to the attachment long holes 33 and the attachment holes 34. Is formed. The attachment means 32 includes, for example, a bolt 37, a nut 38, and a washer 39. The washer 39 is made of, for example, a resin and has a lower heat resistant temperature than the bolt 37 and the nut 38.

  Then, a bolt 37 is inserted into the lower end position of the mounting elongated hole 33 of both the first plate portions 31 and the hole 35 in the central portion of the vertical plate portion 14, and a nut 38 is screwed and tightened to the bolt 37 via a washer 39. The bolts 37 are inserted into the mounting holes 34 of the first plate portions 31 and the holes 35 at both the left and right ends of the vertical plate portion 14, and the nuts 38 are screwed and tightened to the bolts 37 through the washers 39. The first plate portions 31 are fixedly attached to the front and rear surfaces of the vertical plate portion 14 by the tightening and fixing force of the nuts 38. That is, the two abutment supports 21 are fixed to the front and rear surface sides of the vertical plate portion 14 of the draining member 12 by the plurality of attachment means 32, and the vertical plate portion 14 is sandwiched between the first plate portions 31.

  Note that, for example, in the event of a fire, the washer 39 of the mounting means 32 is melted and the fastening force of the nut 38 is weakened. As a result, the draining member 12 is integrated with the slat 11 as shown in FIG. When the left and right direction center side is deformed into a curved shape that bulges upward due to thermal expansion, the bolt 37 of the attachment means 32 moves upward from the lower end position to the upper end position in accordance with the deformation. For this reason, the deformation of the draining member 12 is not transmitted to the contact support 21 as it is, and the contact support 21 is not deformed integrally with the draining member 12, and the deformation due to the thermal expansion of the contact support 21 is reduced. The

  The abutting support 21 has a substantially horizontal second plate portion 41 that integrally projects from the lower end portion of the first plate portion 31 toward the side opposite to the vertical plate portion 14 side. The plate portion 41 covers substantially the entire upper surface of the horizontal plate portion 13.

  A substantially vertical third plate portion 42 projects integrally downward from the distal end portion of the second plate portion 41, and a substantially horizontal fourth plate portion 43 extends from the lower end portion of the third plate portion 42. It protrudes integrally toward the side facing the two plate portions 41. An insertion opening having a longitudinal direction between the rear end of the fourth plate 43 of the front contact support 21 and the front end of the fourth plate 43 of the rear contact support 21 is provided. 44 is formed, and the contact movable body 22 is movably inserted into the insertion opening 44. The lower surface portion of the fourth plate portion 43 serves as a contact surface portion 43a that contacts the lower frame body 9 when the opening 2 is closed. A plurality of, for example, two ridges 49 are formed on the contact surface 43a.

  In addition, a fifth plate portion 45 having a substantially inverted L-shaped cross section constituted by a horizontal plate 46 and a vertical plate 47 is integrally provided between the third plate portion 42 and the fourth plate portion 43. The portion of the third plate portion 42 that faces the vertical plate 47, the portion of the fourth plate portion 43 that faces the horizontal plate 46, and the fifth plate portion 45, approximately 4 in the left-right direction. A cylindrical portion 48 having a rectangular tube shape is configured, and an end portion of the cylindrical portion 48 is a fitting receiving portion 50.

  The abutting movable body 22 has a main body 51 having a longitudinal shape that is open upward and has a substantially U-shaped cross section. The main body 51 includes a substantially horizontal contact plate 52 that contacts the lower frame body 9 when the opening 2 is closed, and integrally protrudes upward from both front and rear ends of the contact plate 52 so as to face each other. It is composed of a pair of opposed plates 53 that are substantially vertical. Note that the lower surface portion of the contact plate 52 is a contact surface portion 52a that contacts the lower frame body 9 when the opening 2 is closed. A plurality of, for example, two ridges 60 are formed on the contact surface portion 52a.

  Further, the abutting movable body 22 has a projecting plate portion 54 that is a pair of supported portions of a substantially horizontal front and rear that project integrally from the upper ends of the opposing plates 53 in a direction away from each other. . As is apparent from FIG. 3, both protruding plate portions 54 are placed on the fourth plate portion 43 of the contact support 21 before the contact movable body 22 contacts the lower frame body 9. At this time, the main body 51 is in a protruding state protruding downward from the insertion opening 44. When the contact surface portion 52 a of the contact movable body 22 contacts the lower frame body 9, both the projecting plate portions 54 move relatively upward with respect to the contact support body 21 and are separated from the fourth plate portion 43. .

  As is apparent from FIGS. 5 and 6 and the like, the protruding plate portion 54 is integrally protruded from the upper end portion of the opposing plate 53 except for the left and right end portions, and the left and right end portions of the main body portion 51 are both The contact support 21 protrudes outward from the longitudinal end surface, which is the left-right direction end surface.

  The restricting body 23 has a substantially vertical plate portion 61 that is in contact with the longitudinal end surface of the abutting support 21 and is located outside the abutting support 21. Then, the one side portion of the plate portion 61, that is, the portion on the side facing the projecting plate portion 54 of the contact movable body 22 is brought into contact with the contact movable body 22 by the contact with the longitudinal end surface of the projecting plate portion 54. A restricting portion 62 that restricts outward movement, that is, left-right movement with respect to the support 21 is provided.

  At the upper end portion of the restricting portion 62, a substantially horizontal shape that prevents the protruding plate portion 54 of the contact movable body 22 from directly contacting the horizontal plate portion 13 of the draining member 12 of the opening / closing body 3 when the opening 2 is closed. A substantially rectangular plate-shaped contact prevention portion 63 is integrally projected. The contact prevention part 63 is inserted into the contact support 21, and the horizontal plate part 13 is disposed between the contact prevention part 63 and the second plate part 41. A space allowing deformation of the draining member 12 is provided between the second plate portion 41 and the horizontal plate portion 13. That is, the separation distance between the second plate portion 41 and the contact prevention portion 63 is larger than the thickness dimension of the horizontal plate portion 13 of the draining member 12, and the horizontal distance between the second plate portion 41 and the contact prevention portion 63 is horizontal. The plate part 13 can be deformed.

  An inner end portion of the restricting portion 62 is a guide that guides the tip end portion of the protruding plate portion 54 of the contact movable body 22 along the vertical direction when the contact movable body 22 moves in the vertical direction with respect to the contact support body 21. A vertical and substantially rectangular plate-like movable body guide portion 64 is integrally projected. The movable body guide portion 64 is inserted into the contact support body 21 and faces the vertical plate 47 of the fifth plate portion 45. The movable body guide portion 64 has a mounting hole 65 that is a substantially circular through hole. The mounting hole 65 includes a large diameter hole portion 65a and a small diameter hole portion 65b.

  In addition, a substantially rectangular parallelepiped fitting portion 66 having a mounting hole 67 which is a substantially circular through hole is integrally projected on the other side portion of the plate portion 61, and the fitting portion 66 is fitted and received. It is inserted into the portion 50 and is fitted and held by the fitting receiving portion 50.

  Then, the fitting portion 66 of the restricting body 23 is fixedly attached to the fitting receiving portion 50 of the abutting support 21 with a tapping screw 70 as an attaching means. That is, when the tapping screw 70 is screwed into the mounting hole 65 of the movable body guide portion 64, the mounting hole 67 of the fitting portion 66, and the hole 69 of the vertical plate 47, the regulating body 23 is fitted to the contact support 21. It is fixed to the receiving part 50.

  The head portion 70a of the tapping screw 70 is accommodated in the large-diameter hole portion 65a of the mounting hole 65 and does not protrude from the guide surface 64a of the movable body guide portion 64. When the movable contact body 22 moves up and down relative to the contact support body 21, the contact movable body 22 does not contact the left and right ends of the insertion opening 44 of the contact support body 21, but the movable body You may make it contact | abut to the guide surface 64a of the guide part 64 so that sliding is possible. In this case, by configuring the guide surface 64a with a contact surface such as a resin (a material that has low frictional resistance and is easy to slide), the contact movable body 22 is appropriately guided by the guide surface (contact surface) 64a. Is possible.

  Further, the movable body guide portion 64 and the fitting portion 66 are opposed to each other via a gap 68, and the vertical plate 47 of the fitting receiving portion 50 is fitted into the gap 68.

  Note that the contact support 21, the contact movable body 22, and the regulation body 23 are all integrally formed of the same material, for example, a metal material such as aluminum or steel.

  Next, the operation and the like of the opening / closing device 1 will be described.

  For example, when a fire occurs, the opening / closing body 5 moves downward while being unwound from the winding body, and the front end body 4 in the closing movement direction of the opening / closing body 5 contacts the lower frame body 9.

  That is, for example, when a fire detector or the like detects a fire, as shown in FIG. 11, the opening / closing body 5 is lowered by a predetermined amount, thereby causing the protrusion 49 and the contact movable body 22 of the contact surface 43 a of the contact support 21. As a result, the entire opening 2 is closed by the opening / closing body 5, and the first opening 71 and the first space 71 are formed by the opening / closing body 5 in the closed state. The two spaces 72 are partitioned to form a disaster prevention zone.

  When the opening / closing body 5 is lowered, the contact movable body 22 contacts the lower frame body 9 prior to the contact support body 21. Before the contact with the frame body 9, the contact movable body 22 moves up relatively with respect to the contact support body 21, and the main body 51 of the contact movable body 22 is inserted into the contact support body 21. The non-protruding state is achieved.

  When the opening portion 2 is closed and the washer 39 of the attachment means 32 is melted and the fastening force of the nut 38 is weakened, the draining member 12 is integrated with the slat 11 as shown in FIG. Although it deforms into a curved shape due to thermal expansion, in this case, since the bolt 37 moves in the mounting elongated hole 33, the contact support 21 does not deform integrally with the draining member 12, and the contact support 21 Deformation due to thermal expansion is reduced.

  When the opening 2 is closed, as shown in FIG. 12, the contact support 21 is lifted away from the lower frame 9 due to, for example, hot air from a fire or deformation of the contact support 21 due to thermal expansion. Even in this case, the contact movable body 22 does not move up together with the contact support body 21, and the contact state between the contact movable body 22 and the lower frame body 9 is maintained. For this reason, the clearance gap which connects the 1st space 71 and the 2nd space 72 is not formed between the opening-closing body 5 and the lower frame body 9, and the closed state of the opening part 2 is maintained.

According to such an opening / closing device 1, for example, when the contact support 21 is lifted due to the influence of a fire or the like, the contact state with the lower frame 9 is caused by the relative downward movement with respect to the contact support 21. Since the movable contact body 22 is maintained, the occurrence of a gap formed between the opening / closing body 5 and the lower frame body 9 can be suppressed when the opening 2 is closed, thereby improving the fire prevention performance. The appearance is also good .

  Further, since the regulating body 23 regulates the lateral movement of the abutting movable body 22 relative to the abutting support body 21, the abutting movable body 22 does not shift in the left-right direction with respect to the abutting support body 21, Generation | occurrence | production of the clearance gap formed between the opening-closing body 5 and the lower frame body 9 at the time of closing of the opening part 2 can be suppressed further.

  Further, the contact preventive portion 63 of the restricting body 23 can appropriately prevent the contact movable body 22 from contacting the horizontal plate portion 13 of the draining member 12 of the opening / closing body 3, and contact with the contact movable body 22. It is possible to prevent deformation or damage of the horizontal plate portion 13 caused by the above.

  Also, the movable body guide part 64 of the regulating body 23 can properly guide the contact movable body 22 when the contact movable body 22 moves up and down with respect to the contact support body 21, and the contact movable body 22 is caught by other parts. The contact movable body 22 can be appropriately maintained in the contact state when the opening 2 is closed without floating together with the contact support body 21.

  Further, the front end body 4 in the closing movement direction composed of the contact support body 21, the contact movable body 22 and the regulating body 23 can be attached later to the lower end portion of the opening / closing body body 3 of the existing opening / closing device 1. Therefore, it is possible to improve the fireproof performance while using the existing switchgear 1.

  The opening / closing device 1 is not limited to the one having the opening / closing body main body 3 constituted by a metal slat 11 or the like, and for example, the one having the opening / closing body main body 3 constituted by a flexible sheet or the like. But you can.

  Further, the abutted portion with which the end body 4 in the closing movement direction of the opening / closing body 5 abuts is not limited to the lower frame body 9 and may be, for example, the floor surface of a building.

Furthermore, the configuration in which the opening and closing body 3 to open and close the opening portion 2 moves in the vertical direction is not limited, the opening portion 2 moves in the direction in which the opening closed field body 3 For example inclined with respect to the horizontal direction The structure etc. which open and close may be sufficient.

  Further, the attachment means for fixing the contact support 21 to the opening / closing body main body 3 and the attachment means for fixing the restriction body 23 to the contact support 21 are not limited to bolts, tapping screws, etc. For example, rivets or welding may be used.

DESCRIPTION OF SYMBOLS 1 Opening / closing device 2 Opening part 3 Opening / closing body main body 9 Lower frame body which is contacted part
12 draining parts
21 Abutment support
22 Abutting movable body
23 Regulatory bodies
32 Mounting means
33 Mounting hole
37 volts
38 nuts
39 washer
43 plate part 4th plate part
43a contact surface
50 Mating receptacle
51 Body
52a contact surface
54 Projection plate
62 Regulatory Department
63 Contact prevention part
64 Movable body guide
66 Mating part
70 Tapping screw as mounting means

Claims (7)

A movable opening / closing body that opens and closes the opening;
A contact support provided at the front end of the opening / closing body in the closing movement direction and contacting the contacted portion when the opening is closed;
The contact support is supported by the contact support, and when the contact support is separated from the contacted portion when the opening is closed, the contact support is moved relative to the contact support. A contact movable body that maintains the contact state;
Wherein provided on the contact support, and a regulating body for regulating the movement of the laterally with respect to the contact support of the abutment movable body,
The contact support has a plate portion whose lower surface portion is a contact surface portion that contacts the contacted portion when the opening is closed,
The abutting movable body is:
A main body part whose lower surface part is a contact surface part that comes into contact with the contacted part when the opening is closed;
The main body portion is protruded from the upper end portion, and is placed and supported by the plate portion of the contact support body before the contact surface portion of the main body portion contacts the contacted portion. A projecting plate part that separates from the plate part of the contact support when the contact surface part of the part contacts the contacted part,
The opening / closing apparatus according to claim 1, wherein the restricting body includes a restricting portion that restricts a lateral movement of the contact movable body with respect to the contact support body by contact with a longitudinal end surface of the protruding plate portion . The opening / closing apparatus according to claim 1, wherein the restricting body includes a contact preventing portion that prevents the protruding plate portion of the contact movable body from contacting the opening / closing body main body when the opening is closed. The restricting body has a movable body guide portion that guides the tip end portion of the protruding plate portion of the contact movable body when the contact movable body moves in the closing movement direction and the opening movement direction with respect to the contact support body. The switchgear according to claim 1 or 2. The contact support body has a cylindrical fitting receiving portion,
The restricting body has a fitting portion that is fitted into and held in the fitting receiving portion.
The switchgear according to any one of claims 1 to 3, further comprising attachment means for fixedly attaching the fitting portion to the fitting receiving portion. The protruding plate part of the abutting movable body protrudes from the upper end part of the main body part in the left-right direction and is formed at a part other than the left and right end parts
The left and right ends of the main body protrude from the longitudinal end surface of the contact support toward the side.
The switchgear according to any one of claims 1 to 4, wherein The abutting support is attached to the draining member of the opening / closing body by an attaching means,
The abutting support is formed with a vertically long mounting slot extending therethrough,
When the tightening fixing force of the attachment means is weakened by heat, the attachment means moves in the attachment long hole according to the deformation based on the thermal expansion of the draining member.
The switchgear according to any one of claims 1 to 5, characterized in that The mounting means consists of bolts, nuts and washers,
The washer has a lower heat resistant temperature than the bolt and the nut.
The switchgear according to claim 6.

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