JPWO2018142455A1 - Switch gear - Google Patents

Abstract

The switchgear according to the present invention is provided on at least the upper end side and the lower end side of the doors 2, 3 and 4 and the doors 2, 3 and 4 attached to the front of the housing 1 so as to be openable and closable by handle operation. , 3 and 4 and the deformation suppressing body 18, 18a, 18b, vertically arranged in the vicinity of the hinge mechanism side end of the back surface of the door 2, 3 and 4 and the hinge mechanism 5 And 18c.

Description

  The present invention relates to a metal closed switch gear, and more particularly to a door structure that can withstand pressure increase due to an internal arc accident or the like.

  In the conventional switchgear, internal arcing accident caused by small animal intrusion, over-voltage, erroneous operation, etc. causes the pressure inside the device to rise or local overheating to occur, causing mechanical or thermal damage to the device. Give much stress.

  As a conventional technique devised to withstand such a phenomenon, for example, in a switchgear in which the inside of a box is divided into a main circuit device room, a control device room, a bus room, etc. A switchgear is disclosed which secures a passage which can be released to the ceiling of the box body, and which has a pressure release plate at the ceiling. (For example, refer to patent document 1)

  Further, a door gear lock structure of a switchgear is disclosed in which a slide plate and a lock bolt are provided on a door of a front face of a box body, and the lock bolt is fixed when the handle is in a closed position. (See, for example, Patent Document 2)

Patent No. 3664845 (Page 2, FIG. 1) JP, 2009-280995, A (page 1, FIG. 3)

  In the conventional switchgear described above, when the pressure inside the switchgear rises abnormally, the internal pressure is positively released and the front door portion may come into contact with the human body when the door is opened. And the back cover part is taken measures to make it an explosion proof construction.

  With regard to the structure of the door, in the conventional structure described above, since the hinge portion of the door is deformed, it is necessary to thicken the plate thickness and suppress the deformation of the door, but the weight of the door becomes heavy. There is a problem in that it becomes difficult to handle the load at the time of work and there is a problem in that the weight of the entire switch gear is increased.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a switchgear capable of suppressing the deformation of the door due to the internal pressure.

  A switch gear according to the present invention includes a door attached to the front of a housing so as to be openable and closable by handle operation, and a hinge mechanism provided on at least the upper end and the lower end of the door and pivoting the door And a deformation restraining body disposed vertically in the vicinity of the hinge mechanism side end of the back surface of the door.

  According to the switch gear according to the present invention, the deformation suppressing body arranged in the vertical direction is provided in the vicinity of the hinge mechanism side end of the back surface of the door, thereby suppressing the deformation of the door on the hinge mechanism side. It is possible to obtain a switchgear that can

The switchgear concerning Embodiment 1 of this invention are shown, (a) is a front view, (b) is a sectional side view. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a top view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a cross-sectional perspective view in the AA line of FIG. 8 which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a cross-sectional perspective view in the BB line of FIG. 16 which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is sectional drawing in the CC line of FIG. 19 which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a principal part expanded sectional view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a perspective view which shows the displacement suppression body in the switchgear concerning Embodiment 4 of this invention. It is a perspective view which shows the displacement suppression body in the switchgear concerning Embodiment 5 of this invention. It is a perspective view which shows the displacement suppression body in the switchgear concerning Embodiment 6 of this invention. It is a characteristic view which shows the hinge mechanism side end surface displacement in the switch gear concerning embodiment of this invention.

Embodiment 1
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 10 and 31. In the respective drawings, the same or corresponding members and portions will be described with the same reference numerals. FIG. 1 shows a switchgear according to Embodiment 1 of the present invention, where (a) is a front view and (b) is a side sectional view. FIG. 2 is a front view showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 3 is a plan view showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 4 is a left side view showing the middle stage door in the switchgear according to the first embodiment of the present invention. FIG. 5 is a rear view showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 6 is a perspective view of the middle stage door in the switchgear according to the first embodiment of the present invention. FIG. 7 is a rear perspective view showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 8 is a rear perspective view showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 9 is a cross-sectional perspective view taken along the line A-A of FIG. 8 showing the middle stage door in the switchgear according to Embodiment 1 of the present invention. FIG. 10 is an enlarged perspective view of an essential part showing a middle stage door in a switchgear according to Embodiment 1 of the present invention. FIG. 31 is a characteristic diagram showing displacement of the hinge mechanism side end face in the switchgear according to the embodiment of the present invention.

  First, the entire configuration of the switchgear will be described with reference to FIG. The metal closed switch gear is entirely covered with a metal case 1. As shown in FIG. 1 (a), the upper door 2, middle door 3 and lower door 4 have hinge mechanisms 5 on the front side. It is provided to be openable and closable. The upper door 2, middle door 3 and lower door 4 are provided with handle insertion holes 6a, and the handle insertion holes 6a are provided with handles 6 for opening and closing.

  The upper door 2 and the lower door 4 are provided with two hinge mechanisms 5 at the upper end side and the lower end side respectively, and the middle door 3 is provided with the hinge mechanism 5 at the upper end side and the lower end side and a total of 4 at the central part side. The case where it is provided is shown.

  The hinge mechanism 5 is disposed such that the hinge body 5a provided in each door sandwiches the base 5b provided in the housing 1 from the vertical direction, and the pivot 5c is inserted through the hinge body 5a and the base 5b. And the hinge body 5a are fixed, and the pivot 5c and the hinge body 5a are configured to be rotatable relative to the base 5b.

  The inside of the switchgear is divided into a plurality of compartments, the inside of the upper door 2 is the control chamber 7, the inside of the middle door 3 is the circuit breaker room 8, the inside of the lower door 4 is the cable room 9, and the circuit breaker room 8 The upper side of the rear side of the main bus room 10 is.

  A control device (not shown) is accommodated in the control room 7. In the circuit breaker chamber 8, a pullout type circuit breaker 11 is accommodated and can be pulled out to the front side. On the rear wall of the circuit breaker chamber 8, there are fixedly provided a bus-side bushing 12 with a built-in disconnecting part and a cable-side bushing 13 configured similarly with a predetermined distance between the upper and lower sides. 11 is detachable at the bushing.

In the main bus room 10, a three-phase main bus conductor 14 is supported by and supported by the supporting insulator 15, and is connected to the bus side bushing 12 by a branch bus. The cable chamber 9 is a section to which the main circuit cable 16 is connected, and the main circuit cable 16 is connected to the cable side bushing 13 by a branch conductor.
The internal configuration of the switchgear shown in FIG. 1 is an example of a general configuration, and is not limited to this.

  Next, the phenomenon of the internal arcing accident will be described with reference to FIG. The circuit breaker room 8, the cable room 9, and the main bus room 10 are assumed as sites where an internal arc accident may occur due to the small animal intrusion, overvoltage, erroneous operation or the like. When an internal arcing accident occurs, the pressure inside the device rapidly rises, and as indicated by the arrows in the figure, an excessive pressure is applied to the exterior surface of the switchgear (upper door 2, middle door 3, lower door 4, etc.). A pressure release plate 17 is provided on the ceiling of the housing 1 as a means for reducing the rise in the internal pressure.

  The internal pressure applied to the upper door 2, middle door 3 and lower door 4 is not illustrated, but the upper door 2, middle door 3 and lower door 4 at several positions in the vertical direction on the handle side, the upper door The upper door 2, the middle door 3 and the lower door 4 are fixed to the housing 1 by bolts at one place at each of the upper end center portion and the lower end side center portion of the middle door 3 and lower door 4. Thereby, the upper stage door 2, the middle stage door 3, and the lower stage door 4 are not opened by the internal pressure.

  As described above, the upper door 2, the middle door 3 and the lower door 4 are fixed to the housing 1 so that there is no problem in strength, but since they are not fixed to the housing 1 by bolts on the hinge mechanism 5 side, It has been found that the hinge mechanism 5 side of the upper door 2, middle door 3 and lower door 4 has low strength against internal pressure. And, as in the conventional characteristics shown in FIG. 31, it has been found that the displacement of the door is large, and the displacement becomes larger at the central portion side than at the upper end side and the lower end side.

  In the first embodiment of the present invention, the upper stage door 2, the middle stage door 3 and the lower stage door 4 are prevented from being deformed by the internal pressure applied to the upper stage door 2, the middle stage door 3 and the lower stage door 4 respectively. This embodiment is characterized in that the deformation suppressing body 18 is provided on the side of the hinge mechanism 5 of the door 2, the middle door 3 and the lower door 4.

  Hereinafter, for example, although the middle tier door 3 is described, the same applies to the upper tier door 2 and the lower tier door 4, and the description of the upper tier door 2 and the lower tier door 4 will be omitted.

  The middle door 3 has a front face 3a, a back face 3b, a handle side end 3c, a hinge mechanism side end 3d, an upper end 3e and a lower end 3f, and the handle side end 3c The hinge mechanism side end 3d, the upper end 3e, and the lower end 3f are all formed in a U-shaped cross section.

  The deformation restraining body 18a is disposed vertically on the hinge mechanism 5 side of the back surface 3b of the middle door 3 and the upper end surface 18a1 of the deformation restraining body 18a is positioned on the central side from the lower end of the uppermost hinge mechanism 5 The case where the lower end surface 18a2 of the suppression body 18a is located in the center part side from the upper end of the lowermost hinge mechanism 5 is shown. The deformation suppressing body 18 a is configured to have a U-shaped cross section, and a U-shaped tip end portion is fixed to the back surface portion 3 b of the middle door 3 by, for example, welding or the like.

  Thus, on the hinge mechanism 5 side of the back surface portion 3b of the middle stage door 3, the upper end surface 18a1 is positioned on the central portion side from the lower end of the uppermost hinge mechanism 5, and the lower end surface 18a2 is the upper end of the lowermost hinge mechanism 5. By providing the deformation suppressing body 18a positioned on the more central side, the displacement on the upper end side and the lower end side of the middle stage door 3 on the side of the hinge mechanism 5 is slightly large as in the characteristic of the first embodiment shown in FIG. However, the displacement on the central side can be reduced. And the displacement amount on the upper end side of the hinge mechanism 5 side of the middle stage door 3, the lower end side, and the center part side can be equalized.

  Therefore, the amount of deformation of the middle door 3 on the side of the hinge mechanism 5 can be reduced without increasing the thickness of the entire door, and the thickness and weight of the door can be reduced, so the initial purpose is achieved. can do.

Second Embodiment
Second Embodiment A second embodiment of the present invention will be described based on FIGS. 11 to 18, but in the drawings, the same or corresponding members and portions will be described with the same reference numerals. FIG. 11 is a front view showing a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 12 is a left side view showing a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 13 is a rear view showing a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 14 is a perspective view of a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 15 is a rear perspective view showing a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 16 is a rear perspective view showing a middle stage door in a switchgear according to Embodiment 2 of the present invention. FIG. 17 is a cross-sectional perspective view taken along the line B-B of FIG. 16 showing the middle stage door in the switchgear according to Embodiment 2 of the present invention. FIG. 18 is an enlarged perspective view of an essential part showing a middle stage door in a switchgear according to Embodiment 2 of the present invention.

  In the first embodiment described above, the upper end surface 18a1 of the deformation suppressing body 18a is located on the central portion side of the lower end of the hinge mechanism 5 at the uppermost end, and the lower end surface 18a2 of the deformation suppressing body 18a is the lowermost hinge mechanism 5 In the second embodiment of the present invention, the deformation suppressing body 18b is positioned between the hinge mechanisms 5 of the uppermost end, and the lower end surface 18b2 is the lower side. It is located between the lowermost hinge mechanisms 5.

  In the second embodiment, the deformation suppressing body 18b is disposed in the vertical direction on the hinge mechanism 5 side of the back surface 3b of the middle door 3 in the category, and the upper end surface 18b1 of the deformation suppressing body 18b is the uppermost hinge The case where the lower end surface 18b2 of the deformation suppressing body 18b is the same position as the lower end of the lowermost hinge mechanism 5 is shown. The deformation restraining body 18 b is configured to have a U-shaped cross section, and a U-shaped tip end portion is fixed to the back surface portion 3 b of the middle door 3 by, for example, welding or the like.

  Thus, on the hinge mechanism 5 side of the back surface 3b of the middle door 3, the upper end face 18b1 is at the same position as the upper end of the uppermost hinge mechanism 5, and the lower end face 18b2 is at the same position as the lower end of the lower hinge mechanism 5. By providing the deformation suppressing body 18b, the displacement of the upper end side, the lower end side, and the central portion side of the middle door 3 on the side of the hinge mechanism 5 is described as in the characteristic of the second embodiment shown in FIG. It can be suppressed to be extremely smaller than that of the first embodiment and the second embodiment.

  Therefore, the amount of deformation of the middle door 3 on the side of the hinge mechanism 5 can be kept extremely small without increasing the thickness of the entire door, and the thickness and weight of the door can be reduced. It is possible to obtain a switch gear that is more effective than the first embodiment.

  The case where the upper end face 18b1 of the deformation restraining body 18b is at the same position as the upper end of the hinge mechanism 5 and the lower end face 18b2 of the deformation restraining body 18b is at the same position as the lower end of the lowermost hinge mechanism 5 However, the present invention is not limited to this, and the upper end surface 18b1 of the deformation suppressing body 18b is located between the hinge mechanisms 5 at the uppermost end, and the lower end surface 18b2 of the deformation suppressing body 18b is between the hinge mechanisms 5 at the lowermost end. The same effect can be achieved if it is located.

Third Embodiment
A third embodiment of the present invention will be described with reference to FIGS. 19 to 27. In the drawings, the same or corresponding members and portions will be described with the same reference numerals. FIG. 19 is a front view showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 20 is a left side view showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 21 is a rear view showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 22 is a perspective view of the middle stage door in the switchgear according to Embodiment 3 of the present invention. FIG. 23 is a rear perspective view showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 24 is a rear perspective view showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 25 is a cross-sectional view taken along line C-C of FIG. 19 showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 26 is an enlarged perspective view of an essential part showing a middle stage door in a switchgear according to Embodiment 3 of the present invention. FIG. 27 is an enlarged sectional view of an essential part showing a middle stage door in a switchgear according to a third embodiment of the present invention.

  In the second embodiment described above, the deformation restraining body 18b is arranged such that the upper end surface 18b1 is located between the hinge mechanisms 5 at the uppermost end and the lower end surface 18b2 is located between the hinge mechanisms 5 at the lowermost end. In the third embodiment of the present invention, the deformation restraining body 18c has the upper end face 18c1 located between the uppermost hinge mechanism 5 and the upper end 3e of the middle door 3 and the lower end face 18c2 is It is located between the lowermost hinge mechanism 5 and the lower end 3 f of the middle door 3.

  In the third embodiment, the deformation suppressing body 18c is disposed in the vertical direction on the hinge mechanism 5 side of the back surface portion 3b of the middle door 3 in the category, and the upper end face 18c1 of the deformation suppressing body 18c is the middle door 3 The case where the lower end surface 18c2 of the deformation suppressing body 18c is positioned at the lower end portion 3f of the middle door 3 is shown. The deformation restraining body 18 c is configured to have a U-shaped cross section, and a U-shaped tip end portion is fixed to the back surface portion 3 b of the middle door 3 by, for example, welding or the like.

  Thus, on the hinge mechanism 5 side of the back surface 3b of the middle door 3, the upper end face 18c1 is located at the upper end 3e of the middle door 3, and the lower end face 18c2 is located at the lower end 3f of the middle door 3. As in the characteristic of the third embodiment shown in FIG. 31, the displacement of the upper end side, the lower end side, and the central portion side of the middle door 3 is described in the second embodiment by providing the 18c. It can be further suppressed to a smaller size.

  Therefore, the amount of deformation of the middle door 3 on the side of the hinge mechanism 5 can be further reduced without increasing the thickness of the entire door, and the thickness and weight of the door can be reduced. It is possible to obtain a switch gear that is more effective than the second embodiment.

  The upper end face 18c1 of the deformation restraining body 18c is located at the upper end 3e of the middle door 3, and the lower end face 18c2 of the deformation restraining body 18c is located at the lower end 3f of the middle door 3, but The upper end surface 18c1 of the deformation suppressing body 18c is located between the hinge mechanism 5 at the uppermost end and the upper end 3e of the middle door 3 and the lower end surface 18c2 of the deformation suppressing body 18c is the lowermost end. It suffices to be positioned between the hinge mechanism 5 and the lower end 3f of the middle door 3, and the same effect can be obtained.

Fourth Embodiment
Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. FIG. 28 is a perspective view showing a displacement suppressor 18d in a switchgear according to Embodiment 4 of the present invention. In the first to third embodiments described above, the displacement suppression bodies 18a, 18b and 18c are formed to have a U-shaped cross section, but in the fourth embodiment, the displacement suppression body 18d has a circular arc shape in cross section. The second embodiment has the same effect as the above-described embodiments.

Embodiment 5
Fifth Embodiment A fifth embodiment of the present invention will be described with reference to FIG. FIG. 29 is a perspective view showing a displacement suppressor 18e in a switchgear according to Embodiment 5 of the present invention. In the first to third embodiments described above, the displacement suppression bodies 18a, 18b and 18c are formed to have a U-shaped cross section. However, in the fifth embodiment, the displacement suppression bodies 18e have a triangular shape in cross section. The second embodiment has the same effect as the above-described embodiments.

Sixth Embodiment
Sixth Embodiment A sixth embodiment of the present invention will be described based on FIG. FIG. 30 is a perspective view showing a displacement restraining body 18f in a switchgear according to Embodiment 6 of the present invention. In the first to third embodiments described above, the displacement suppression bodies 18a, 18b and 18c are formed to have a U-shaped cross section, but in the sixth embodiment, the displacement suppression body 18f has a polygonal shape in cross section. The second embodiment has the same effect as the above-described embodiments.
Furthermore, the displacement suppressing body is not limited to the configuration of each embodiment described above, and although not shown, it may be a polygonal cylindrical shape such as a round cylindrical shape or a square cylindrical shape, as described above. The same effect as each embodiment can be obtained.

  In each embodiment mentioned above, although middle stage door 3 was described, it is not limited to this, It can apply similarly to upper stage door 2 or lower stage door 4, and the same effect is produced.

  In the present invention, within the scope of the invention, each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted.

  The present invention is suitable for realizing a switchgear capable of suppressing the deformation of the door to the internal pressure.

  Reference Signs List 1 case, 2 upper door, 3 middle door, 3b rear face, 3d hinge mechanism side end, 3e upper end, 3f lower end, 4 lower door, 5 hinge mechanism, 6 handle, 18 deformation suppressor, 18a deformation suppression Body 18a1 upper end face 18a2 lower end face 18b deformation suppressing body 18b1 upper end face 18b2 lower end face 18c deformation suppressing body 18c1 upper end face 18c2 lower end face 18d deformation suppressing body 18e deformation suppressing body 18f deformation suppressing body .

The switchgear concerning Embodiment 1 of this invention are shown, (a) is a front view, (b) is a sectional side view. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a top view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a cross-sectional perspective view in the AA line of FIG. 8 which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 1 of this invention. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a cross-sectional perspective view in the BB line of FIG. 16 which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 2 of this invention. It is a front view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a left view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a perspective view of the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a rear perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is sectional drawing in the CC line of FIG. 19 which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a principal part expansion perspective view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. It is a principal part expanded sectional view which shows the middle stage door in the switchgear concerning Embodiment 3 of this invention. Is a perspective view showing a modified suppression Seitai in switchgear according to a fourth embodiment of the present invention. Is a perspective view showing a modified suppression Seitai in switchgear according to Embodiment 5 of the present invention. Is a perspective view showing a modified suppression Seitai in switchgear according to Embodiment 6 of the present invention. It is a characteristic view which shows the hinge mechanism side end surface displacement in the switch gear concerning embodiment of this invention.

Fourth Embodiment
Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. Figure 28 is a perspective view showing a modified suppression Seitai 18d in the switch gear according to a fourth embodiment of the present invention. In the first to the third embodiments, the deformation suppression Seitai 18a, 18b, although 18c has dealt with the case of being configured to have a U-shaped cross section, in the fourth embodiment, the deformation suppression Seitai 18d are cross-sectional The case where it is configured in an arc shape is shown, and the same effect as each of the above-described embodiments can be obtained.

Embodiment 5
Fifth Embodiment A fifth embodiment of the present invention will be described with reference to FIG. Figure 29 is a perspective view showing a modified suppression Seitai 18e in the switch gear according to the fifth embodiment of the present invention. In the first to the third embodiments, the deformation suppression Seitai 18a, 18b, although 18c has dealt with the case of being configured to have a U-shaped cross section, in the fifth embodiment, the deformation suppression Seitai 18e is a cross-sectional The case where it is configured in a triangular shape is shown, and the same effect as each of the above-described embodiments can be obtained.

Sixth Embodiment
Sixth Embodiment A sixth embodiment of the present invention will be described based on FIG. Figure 30 is a perspective view showing a modified suppression Seitai 18f in the switchgear according to Embodiment 6 of the present invention. In the first to the third embodiments, the deformation suppression Seitai 18a, 18b, 18c but has dealt with the case of being configured to have a U-shaped cross section, in the sixth embodiment, deformation suppression Seitai 18f are cross-sectional The case where it is comprised in a polygon shape is shown, and the same effect as each embodiment mentioned above is produced.
Further, as the deformation suppression member is not limited to the configuration of each embodiment described above, although not shown, it can also be a round cylindrical or polygonal tubular such as square tube shape, above The same effects as those of the above-described embodiments can be obtained.

Claims (10)

  A door attached to the front of a housing so as to be openable and closable by handle operation, a hinge mechanism provided on at least the upper end and the lower end of the door and configured to turn the door rotatably, and a back portion of the door What is claimed is: 1. A switchgear comprising: a deformation suppressing body vertically disposed in the vicinity of an end portion on a hinge mechanism side.   The switch gear according to claim 1, wherein the deformation suppressing body is configured to have a U-shaped cross section.   The switch gear according to claim 1, wherein the deformation suppressing body is formed in an arc shape in cross section.   The switch gear according to claim 1, wherein the deformation suppressing body is formed in an arc shape in cross section.   The switch gear according to claim 1, wherein the deformation suppressing body is formed in an arc shape in cross section.   The deformation restraining body is characterized in that the upper end face is positioned on the central side of the lower end of the uppermost hinge mechanism, and the lower end face is positioned on the central side of the lowermost hinge mechanism from the upper end. The switchgear according to any one of claims 5 to 10.   The upper surface of the deformation restraining body is located between the uppermost hinge mechanisms, and the lower end surface is located between the lowermost hinge mechanisms. Switch gear described in.   The switchgear according to claim 7, wherein the deformation suppressing body has the upper end face at the same position as the upper end of the uppermost hinge mechanism and the lower end face at the same position as the lower end of the lowermost hinge mechanism.   The deformation restraining body is characterized in that the upper end surface is located between the uppermost hinge mechanism and the upper end of the door, and the lower end surface is located between the lowermost hinge mechanism and the lower end of the door. The switchgear according to any one of claims 1 to 5, wherein: The switchgear according to claim 9, wherein the deformation suppressing body has an upper end surface located at an upper end portion of the door and a lower end surface located at a lower end portion of the door.

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