JP7147556B2 - Enclosures for power receiving and transforming equipment and power receiving and transforming equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing for power receiving and transforming equipment and power receiving and transforming equipment. The present invention relates to a substation equipment housing and a substation equipment.

2. Description of the Related Art Conventionally, an elastic rubber nut has been disclosed which includes a nut housed in a rubber body and a tightening bolt screwed into the nut, and which fixes plates to each other (see, for example, Patent Document 1).

In the above patent document, a pair of plates (a first plate and a second plate) are provided with a nut housed in a rubber body (flexible member) and a tightening bolt (screw member) screwed into the nut. A resilient rubber nut is disclosed for securing the bodies together. This elastic rubber nut includes a cylindrical rubber body provided with a flange at one end, and a nut housed at the other end of the rubber body. Then, in a state in which the first plate and the second plate are superimposed so that the through holes formed in the first plate and the second plate communicate with each other, the first plate communicates from the first plate. A cylindrical rubber body of an elastic rubber nut is inserted into the through hole of the plate and the through hole of the second plate. As a result, the flange portion of the elastic rubber nut is arranged on the opposite side of the first plate to the second plate. A tightening bolt is inserted into the cylindrical rubber body from the flange portion side, and the tightening bolt and the nut are screwed together. As a result, the nut inserted into the rubber body approaches the head side of the tightening bolt. As a result, the first plate and the second plate are fixed in a state in which the cylindrical rubber body is deformed so as to bend on the side of the second plate opposite to the first plate. The outer diameter of the flange portion is larger than the diameters of the through holes of the first plate and the through holes of the second plate. In addition, since the cylindrical rubber body is deformed so as to bend, unlike the case where a flexible member such as a rubber nut is not used, the first plate and the second plate may be separated due to vibration. is restrained from being unfixed.

Japanese Utility Model Laid-Open No. 5-52323

Here, a conventional elastic rubber nut for fixing a pair of plates (a first plate and a second plate) as disclosed in Patent Document 1 is attached to a switchboard or a housing for power receiving and transforming equipment including a switchboard. In the above, it is conceivable that the mounting portion is used for fixing a protective cover provided to cover electrical equipment and the like housed inside the housing. For example, the first plate in Patent Document 1 is used as a protective cover, and the second plate is used as a mounting portion. In this case, the flange portion of the elastic rubber nut and the head portion of the tightening bolt are arranged on the side of the protective cover. However, since the diameter of the head of the tightening bolt and the outer diameter of the flange portion are larger than the diameter of the through hole of the first plate (protective cover), the first plate must be removed to remove the protective cover from the mounting portion. It is necessary to completely remove (the rubber body of) the elastic rubber nut from the through-hole of the body and the through-hole of the second plate. Therefore, when the conventional elastic rubber nut described in Patent Document 1 is used for fixing the mounting portion and the protective cover in the housing for power receiving and transforming equipment, the fixing between the protective cover and the mounting portion is released due to vibration. However, there is a problem that the protective cover cannot be easily removed from the mounting portion.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to attach a cover member while preventing the fixation between the attachment portion and the cover member from being released. To provide a housing for power receiving and transforming equipment and a power receiving and transforming equipment that can be easily removed from a part.

To achieve the above object, a housing for power receiving and transforming equipment according to a first aspect of the present invention is a housing for power receiving and transforming equipment including a switchboard or a distribution board, wherein A mounting portion provided with a first through hole, a cover member having a second through hole and mounted on the mounting portion, and a screw head having a diameter smaller than that of the second through hole. and a flexible member through which the body of the screw member is inserted, wherein the flexible member includes a first through hole and a second through hole. The screw member is inserted through at least the second through hole of the flexible member and the cover member is arranged on the mounting portion. The flexible member is bent larger than the diameter of the second through-hole on the screw head side by being fastened to the female screw portion provided on the mounting portion side.

In the housing for power receiving and transforming equipment according to the first aspect of the present invention, as described above, in a state where the cover member is arranged on the mounting portion, the screw member is inserted into the second through hole and the first through hole from the cover member side. By inserting the flexible member through the hole and fastening it to the female screw portion provided on the mounting portion side, the flexible member has a diameter larger than the diameter of the second through hole on the screw head side. greatly distorted. As a result, since the flexible member is flexed larger than the diameter of the second through hole on the screw head side, the attachment portion can be bent while preventing the attachment portion and the cover member from being unfixed. The cover member can be fixed against. Further, by loosening the fastening of the screw member to the female screw portion, the degree of deflection of the flexible member can be reduced. can be released from the fixing of the cover member to the mounting portion. Further, since the diameter of the screw head is smaller than the diameter of the second through hole, the cover member is attached so that the screw head is inserted into the second through hole while the screw member is loosened from the female thread. By moving away from the portion, the cover member can be removed from the mounting portion without removing the screw member from the female thread portion. As a result, the cover member can be easily removed from the mounting portion while preventing the fixing between the mounting portion and the cover member from being released.

In the housing for power receiving and transforming equipment according to the first aspect, it is preferable that the screw member is loosened from the female threaded portion while the engagement state of the screw member with the female threaded portion is maintained. On the head side, the bending of the flexible member is relaxed so that it becomes smaller than the diameter of the second through hole, so that the cover member can be removed from the mounting portion. With this configuration, the cover member can be removed from the mounting portion while the engagement state of the screw member with the female thread portion is maintained. The cover member can be reliably and easily removed from the mounting portion.

In the housing for power receiving and transforming equipment according to the first aspect, preferably, a plurality of first through holes of the mounting portion and a plurality of second through holes of the cover member are provided, and the diameter of the second through hole is larger than the diameter of the first through hole. With this configuration, since the diameter of the second through hole is larger than the diameter of the first through hole, by moving the cover member relative to the mounting portion, the first through hole and the It is possible to easily communicate with the second through hole. As a result, even when the positions of the plurality of second through holes of the cover member are misaligned with respect to the plurality of first through holes of the mounting portion due to processing errors, it is possible to prevent the cover member from being attached to the mounting portion. can do.

In the housing for power receiving and transforming equipment according to the first aspect, preferably, the flexible member includes a body portion inserted through both the first through hole and the second through hole from the cover member side, and a body portion connected to the body portion. and a flange portion disposed on the opposite side of the mounting portion to the cover member side and having a diameter larger than that of the body portion, and the female thread portion includes a nut member fixed to the flange portion. . With this configuration, the stepped portion between the main body portion and the flange portion of the flexible member can be engaged with the edge portion of the first through hole of the mounting portion. By fastening (screwing) the screw member to the nut member in a state in which the stepped portion of the flexible member is engaged with the edge portion of the first through hole of the mounting portion, the body portion can be easily bent. can let

In the housing for power receiving and transforming equipment according to the first aspect, preferably, the flexible member is configured to be inserted through the second through-hole from the cover member side, and the female screw portion is formed in the mounting portion. It is provided in the first through hole. According to this configuration, since the first through hole of the mounting portion is provided with the female screw portion, it is possible to suppress an increase in the number of parts, unlike the case where a separate nut member to be fastened to the screw member is provided. can be done.

To achieve the above object, a power receiving and transforming facility according to a second aspect of the present invention comprises: a power receiving and transforming unit including a switchboard or a distribution board; and a housing in which the power receiving and transforming unit is housed. a mounting portion formed with a first through hole; a cover member formed with a second through hole and mounted on the mounting portion; a screw head having a diameter smaller than that of the second through hole; and a flexible member through which the body of the screw member is inserted, wherein the flexible member is one of the first through hole and the second through hole. In a state in which the screw member is inserted through at least the second through-hole and the cover member is arranged on the mounting portion, the screw member is inserted through the second through-hole and the first through-hole and through the flexible member from the cover member side. In this state, the flexible member is bent larger than the diameter of the second through hole on the screw head side by being fastened to the female screw portion provided on the mounting portion side.

In the power receiving and transforming equipment according to the second aspect of the present invention, as described above, in a state where the cover member is arranged on the mounting portion, the screw member is inserted through the second through hole and the first through hole from the cover member side. In addition, by inserting the flexible member and fastening it to the female screw portion provided on the mounting portion side, the flexible member is bent more than the diameter of the second through hole on the screw head side. It is As a result, since the flexible member is flexed larger than the diameter of the second through hole on the screw head side, the attachment portion can be bent while preventing the attachment portion and the cover member from being unfixed. The cover member can be fixed against. Further, the fixation of the cover member to the attachment portion can be released by loosening the fastening of the screw member to the female thread portion. Further, since the diameter of the screw head is smaller than the diameter of the second through hole, the cover member is attached so that the screw head is inserted into the second through hole while the screw member is loosened from the female thread. Since the degree of bending of the flexible member can be reduced by moving it away from the second through-hole, the degree of bending of the flexible member can be reduced until the diameter of the second through hole becomes smaller. , the fixing to the cover member with respect to the mounting portion can be released. As a result, the cover member can be easily removed from the mounting portion while preventing the fixing between the mounting portion and the cover member from being released.

According to the present invention, as described above, the cover member can be easily removed from the mounting portion while preventing the fixing between the mounting portion and the cover member from being released.

FIG. 2 is a perspective view showing a state in which an opening/closing door on the front surface of the housing for power receiving and transforming equipment according to the first embodiment of the present invention is opened; 1 is a perspective view showing a state in which a protective cover of a housing for power receiving and transforming equipment according to a first embodiment of the present invention is removed; FIG. 1 is a diagram showing a frame body, a protective cover, a rubber nut, and a fixing screw of a housing for power receiving and transforming equipment according to a first embodiment of the present invention; FIG. FIG. 4 is a diagram showing a state in which rubber nuts are fitted into through-holes of a frame in the housing for power receiving and transforming equipment according to the first embodiment of the present invention; FIG. 4 is a diagram showing a state in which a fixing screw is temporarily tightened to a rubber nut in a state where the rubber nut is fitted in the through hole of the frame in the housing for power receiving and transforming equipment according to the first embodiment of the present invention. FIG. 2 is a diagram showing a state in which a protective cover is arranged on a frame from the screw head side of a fixing screw in a state in which a fixing screw is temporarily tightened to a rubber nut in the housing for power receiving and transforming equipment according to the first embodiment of the present invention; is. FIG. 4 is a diagram showing a state in which a fixing screw is fully tightened to a rubber nut from a state in which a protective cover is arranged on a frame in the housing for power receiving and transforming equipment according to the first embodiment of the present invention; FIG. 7 is a diagram showing a frame body, a protective cover, a sleeve, and a fixing screw of a housing for power receiving and transforming equipment according to a second embodiment of the present invention; FIG. 9 is a diagram showing a state in which the sleeve is arranged in the frame so that the through hole of the sleeve communicates with the through hole of the frame in the housing for power receiving and transforming equipment according to the second embodiment of the present invention. FIG. 10 is a diagram showing a state in which a fixing screw is temporarily tightened to a rubber nut in a state in which a sleeve is arranged on a frame in a housing for power receiving and transforming equipment according to a second embodiment of the present invention; FIG. 11 is a diagram showing a state in which a protective cover is arranged on a frame from the screw head side of a fixing screw in a state where a fixing screw is temporarily tightened to a rubber nut in a housing for power receiving and transforming equipment according to a second embodiment of the present invention; is. FIG. 10 is a diagram showing a state in which a fixing screw is fully tightened to a rubber nut from a state in which a protective cover is arranged on a frame in the housing for power receiving and transforming equipment according to the second embodiment of the present invention; FIG. 10 is a diagram showing a state in which a fixing screw is temporarily tightened to a rubber nut from a state in which a sleeve is arranged in the frame of the housing for power receiving and transforming equipment according to a modification of the second embodiment of the present invention.

Embodiments embodying the present invention will be described below with reference to the drawings.

[First embodiment]
With reference to FIGS. 1 to 7, the configuration of the housing 100a for power receiving and transforming equipment used in the power receiving and transforming equipment 100 according to the first embodiment of the present invention will be described. The power receiving and transforming equipment 100 is, for example, a switchboard or a distribution board. That is, the power receiving and transforming equipment 100 is a cubicle of a power converter. In addition, the housing|casing 100a for power receiving and transforming facilities is an example of the "casing" of a claim.

As shown in FIG. 1, inside the power receiving and transforming equipment housing 100a, a protective cover 20 is provided so as to cover the electric equipment 1 (see FIG. 2) such as a switch and a meter from the front side of the power receiving and transforming equipment housing 100a. is provided. Further, as shown in FIG. 2, a frame 11 is provided inside the housing 100a for power receiving and transforming equipment. The protective cover 20 is attached to the frame 11 (see FIG. 7) from the X1 direction side. Note that FIG. 1 shows a state in which the opening/closing door 12 provided on the front side of the housing for power receiving and transforming equipment 100a is opened (a state for a worker to access the electric device 1 inside the housing for receiving and transforming equipment 100a). ). Further, in the following description, the front-rear direction of the housing for power receiving and transforming equipment 100a is defined as the X direction, the front direction (front side) of the housing for power receiving and transforming equipment 100a is defined as the X1 direction, and the rear direction of the housing for power receiving and transforming equipment 100a is defined as the X1 direction. The (rear side) is defined as the X2 direction. The electric device 1 is an example of a "receiving and transforming unit" in the scope of claims. Also, the frame 11 and the protective cover 20 are examples of the "mounting portion" and the "cover member" in the claims, respectively.

As shown in FIG. 7 , the protective cover 20 is configured to be fixable to the frame 11 with a rubber nut 30 and a fixing screw 40 . Moreover, as shown in FIG. 5, the protective cover 20 is configured to be removable from the frame 11 . In addition, in the housing for power receiving and transforming equipment 100a, the protective cover 20 and the frame body 11 are arranged on the X1 side and the X2 side, respectively. The rubber nut 30 and the fixing screw 40 are examples of the "flexible member" and the "screw member" in the claims, respectively.

As shown in FIG. 1 , in the housing 100 a for power receiving and transforming equipment, protective covers 20 are attached to the frame 11 at a plurality of positions with respect to one protective cover 20 . That is, in the first embodiment, a plurality of through holes 11a (described later) of the frame 11 and a plurality of through holes 20a (described later) of the protective cover 20 are provided. The through-hole 11a and the through-hole 20a are examples of the "first through-hole" and the "second through-hole" in the scope of claims, respectively.

As shown in FIG. 3, the frame 11 and the protective cover 20 are formed with a through hole 11a and a through hole 20a, respectively. In the first embodiment, the diameter L2 of the through hole 20a is formed larger than the diameter L1 of the through hole 11a. Note that FIG. 3 shows a state in which the frame 11, the protective cover 20, the rubber nut 30, and the fixing screw 40 are completely separated.

The rubber nut 30 has a sleeve 31 and a flange portion 32 . The sleeve 31 is formed in a tubular shape (with a cavity 31a inside) having an inner diameter L3 and an outer diameter L4 (slightly smaller than the diameter L1 of the through hole 11a). This allows the sleeve 31 to be inserted through the through hole 11a and the through hole 20a. The flange portion 32 is connected to the sleeve 31 and has a diameter L5 larger than the diameter (outer diameter) L4 of the sleeve 31 . Thereby, a step portion 43 is formed between the sleeve 31 and the flange portion 32 . Note that the diameter L5 is larger than the diameter L2 of the through hole 20a. A fastening nut 33 is fixed inside the flange portion 32 . It should be noted that the sleeve 31 is an example of the "main body portion" in the scope of claims. Moreover, the fastening nut 33 is an example of the "female screw portion" and the "nut member" in the claims.

The fixing screw 40 includes a screw head 41 having a diameter L6 and a body 42 connected to the screw head 41 (smaller than the diameter L6) and having a diameter L7. The diameter L6 of the screw head 41 is smaller than the diameter L2 of the through hole 20a and substantially equal to the diameter (outer diameter) L4 of the sleeve 31 of the rubber nut 30. A diameter L7 of the trunk portion 42 is slightly smaller than an inner diameter L3 of the sleeve 31 of the rubber nut 30 . As a result, the body portion 42 of the fixing screw 40 can be inserted into (the cavity 31 a of) the sleeve 31 of the rubber nut 30 and fastened to the fastening nut 33 fixed to the flange portion 32 of the rubber nut 30 .

With the above configuration, in the first embodiment, the fixing screw 40 is inserted through the through hole 11 a and the through hole 20 a from the protective cover 20 side (X1 side), and the fixing screw 40 (the trunk portion 42 thereof) is inserted into the frame 11 . The protective cover 20 can be attached to the frame 11 by being fastened to the fastening nut 33 provided on the side (X2 side).

Specifically, as shown in FIG. 7, in the first embodiment, in a state where the protective cover 20 is arranged on the frame 11, the fixing screw 40 is inserted through the through hole 20a and the through hole 11a from the protective cover 20 side. In the state where the rubber nut 30 is inserted through and is fastened to the fastening nut 33 provided on the frame 11 side, the rubber nut 30 is bent larger than the diameter L2 of the through hole 20a on the screw head 41 side ( configured to be deformed). Further, in the first embodiment, the fastening of the fixing screw 40 to the fastening nut 33 is loosened while the fixing screw 40 is kept engaged with the fastening nut 33 , so that the rubber nut is removed from the screw head 41 side. The protective cover 20 is detachable from the frame 11 by relaxing the bending so that the diameter 30 becomes smaller than the diameter L2 of the through hole 20a (see FIG. 6).

Next, attachment and detachment of the protective cover 20 with respect to the frame 11 will be described.

First, as shown in FIG. 4, the sleeve of the rubber nut 30 is inserted into the through hole 20a of the frame 11 from the X2 side of the frame 11 until the stepped portion 43 of the rubber nut 30 comes into contact with the X2 side of the frame 11. 31 is inserted. As a result, the stepped portion 43 of the rubber nut 30 engages with the edge of the through hole 11 a of the frame 11 . Also, the sleeve 31 of the rubber nut 30 protrudes toward the X1 side of the frame 11 .

Then, as shown in FIG. 5 , the body 42 of the fixing screw 40 is inserted into (the cavity 31 a of) the sleeve 31 of the rubber nut 30 from the X1 side, and the body 42 is fastened to the fastening nut 33 . As a result, the rubber nut 30 and the fixing screw 40 are fixed to the frame 11 .

Then, as shown in FIG. 6 , with the rubber nut 30 and the fixing screw 40 fixed to the frame 11 , the screw head 41 of the fixing screw 40 and the sleeve 31 of the rubber nut 30 are inserted into the through hole of the protective cover 20 . 20a. Thereby, the protective cover 20 is arranged near the surface of the frame 11 on the X1 side. 6 shows a state in which the protective cover 20 is in contact with the frame 11, it is sufficient that the protective cover 20 is arranged at least closer to the frame 11 (X2 side) than the screw head 41 is.

Then, as shown in FIG. 7, the fixing screw 40 is tightened to the fastening nut 33 from the protective cover 20 side (X1 side). Then, the distance between the screw head 41 of the fixing screw 40 and the protective cover 20 becomes smaller. As a result, a portion of the sleeve 31 (the portion protruding from the through hole 20a of the protective cover 20) is on the side of the screw head 41 (the side (X1 side) opposite to the frame 11 side (X2 side) of the protective cover 20). , the sleeve 31 is bent (elastically deformed) radially outward. Then, a portion of the sleeve 31 is bent to a diameter L4a larger than the diameter L2 of the through hole 20a, and the fixing screw 40 is tightened until the bent portion comes into contact with the surface of the protective cover 20 on the X1 side. The protective cover 20 is fixed to the frame 11 by being tightened.

6 and 7 can be reversed to remove protective cover 20 from frame 11 without removing rubber nut 30 and fixing screw 40 from frame 11 . That is, by flexing the sleeve 31, the protective cover 20 is fixed to the frame 11 (the state shown in FIG. 7). On the side (X1 side) opposite to the frame 11 side (X2 side) of the protective cover 20, the sleeve 31 returns to the state (state shown in FIG. 6) where the sleeve 31 is no longer flexed. Thereby, it is possible to easily remove only the protective cover 20 from the frame 11 without removing the rubber nut 30 and the fixing screw 40 from the frame 11 .

(Effect of the first embodiment)
The following effects can be obtained in the first embodiment.

In the first embodiment, as described above, in the state where the protective cover 20 is arranged on the frame 11 of the housing 100a for power receiving and transforming equipment, the fixing screw 40 is inserted from the protective cover 20 side into the through hole 20a and through hole 20a. With the rubber nut 30 inserted through the hole 11a, it is fastened to the fastening nut 33 provided on the frame 11 side, so that the rubber nut 30 is larger than the diameter L2 of the through hole 20a on the screw head 41 side. Configure it to be flexed. As a result, on the screw head 41 side, the rubber nut 30 is bent more than the diameter L2 of the through hole 20a. A protective cover 20 can be fixed to the body 11 . Further, by loosening the fastening of the fixing screw 40 to the fastening nut 33, the degree of deflection of the rubber nut 30 can be reduced. Thus, the fixing of the protective cover 20 to the frame 11 can be released. In addition, since the diameter L6 of the screw head 41 is smaller than the diameter L2 of the through hole 20a, the through hole 20a is protected so that the screw head 41 is inserted into the fixing screw 40 in a state in which the fastening of the fixing screw 40 to the fastening nut 33 is loosened. By moving the cover 20 away from the frame 11 , the protective cover 20 can be removed from the frame 11 without removing the fixing screw 40 from the fastening nut 33 . As a result, it is possible to easily remove the protective cover 20 from the frame 11 while preventing the frame 11 and the protective cover 20 from being unfixed.

Further, in the first embodiment, as described above, the housing 100a for power receiving and transforming equipment is fastened to the fastening nut 33 of the fastening screw 40 while the engagement state of the fastening nut 33 of the fastening screw 40 is maintained. is loosened, the bending of the rubber nut 30 on the screw head 41 side is relaxed so that it becomes smaller than the diameter L2 of the through hole 20a, and the protective cover 20 can be removed from the frame 11. As a result, the protective cover 20 can be removed from the frame 11 while the fixing screw 40 is kept engaged with the fastening nut 33 . The protective cover 20 can be reliably and easily removed from the frame 11 .

Further, in the first embodiment, as described above, a plurality of through holes 11a of the frame 11 and a plurality of through holes 20a of the protective cover 20 are provided. The diameter L2 of the through hole 20a is made larger than the diameter L1 of the through hole 11a. Accordingly, since the diameter L2 of the through hole 20a is larger than the diameter L1 of the through hole 11a, by moving the protective cover 20 relative to the frame 11, the through hole 11a and the through hole 20a can be separated from each other in plan view. can be easily communicated with. As a result, even if the positions of the plurality of through holes 20a of the protective cover 20 are displaced from the plurality of through holes 11a of the frame 11 due to processing errors, the protective cover 20 cannot be attached to the frame 11. can be suppressed.

Further, in the first embodiment, as described above, the rubber nut 30 is connected to the sleeve 31 inserted through both the through hole 11a and the through hole 20a from the protective cover 20 side, and connected to the sleeve 31. and a flange portion 32 disposed on the side opposite to the protective cover 20 side of and having a diameter L5 larger than the diameter L4 of the sleeve 31 . The fastening nut 33 includes the fastening nut 33 fixed to the flange portion 32 . Thereby, the step portion 43 between the sleeve 31 and the flange portion 32 of the rubber nut 30 can be engaged with the edge portion of the through hole 11 a of the frame 11 . By fastening (screwing) the fixing screw 40 to the fastening nut 33 in a state in which the stepped portion 43 of the rubber nut 30 is engaged with the edge portion of the through hole 11 a of the frame 11 , the sleeve 31 can be easily removed. It can be bent.

[Second embodiment]
A second embodiment will be described with reference to FIGS. 8 to 12. FIG. In this second embodiment, unlike the first embodiment in which the portion (fastening nut 33) to which the fixing screw 40 is fastened is provided on the rubber nut 30, the portion (female screw portion 211b) to which the fixing screw 40 is fastened is It is provided on the frame 211 . In addition, in the figure, the same code|symbol is attached|subjected to the part of the structure similar to the said 1st Embodiment.

As shown in FIG. 8, a frame 211 is provided inside a housing 200a (see FIG. 1) for power receiving and transforming equipment used in the power receiving and transforming equipment 200 according to the second embodiment of the present invention. As shown in FIG. 12 , protective cover 20 is configured to be fixable to frame 211 by sleeve 230 , frame 211 and fixing screw 40 . In addition, the frame 211 is an example of the "mounting portion" in the scope of claims. Also, the sleeve 230 is an example of a "flexible member" in the claims.

As shown in FIG. 8, the frame 211 is formed with a through hole 211a. In the second embodiment, the diameter L21 of the through hole 211a formed in the frame 211 is smaller than the diameter L2 of the through hole 20a. A female screw portion 211b is formed on the inner peripheral surface of the through hole 211a of the frame 211 . Thereby, the fixing screw 40 can fasten the trunk|drum 42 with the through-hole 211a (female screw part 211b) of the frame 211. As shown in FIG. The through hole 211a is an example of the "first through hole" in the scope of claims.

The sleeve 230 has substantially the same configuration as the sleeve 31 of the power receiving and transforming equipment 100 . That is, the sleeve 230 is formed in a cylindrical shape (with a cavity 230a inside) having an inner diameter L3 and an outer diameter L24 (slightly smaller than the diameter L2 of the through hole 11a). Note that the inner diameter L3 of the sleeve 230 is slightly larger than the through hole 211a of the frame 211 . Also, the outer diameter L24 of the sleeve 230 is smaller than the through hole 211a of the frame 211 . Accordingly, unlike the sleeve 31 of the power receiving and transforming equipment 100 of the first embodiment, the sleeve 230 is inserted only through the through hole 20a without being inserted through the through hole 211a.

With the above configuration, in the second embodiment, the fixing screw 40 is inserted into the through hole 211a from the protective cover 20 side (X1 side), and the fixing screw 40 (the body portion 42 thereof) is formed in the frame 211. The protection cover 20 can be attached to the frame body 211 by being fastened to the through hole 211a.

Specifically, as shown in FIG. 12, in the second embodiment, in a state where the protective cover 20 is arranged on the frame 211, the fixing screw 40 is inserted through the through hole 211a and the through hole 211a from the protective cover 20 side. The sleeve 230 is fastened to the female screw portion 211b provided on the frame body 211 side in a state in which the sleeve 230 is inserted through the sleeve 230, so that the sleeve 230 bends more than the diameter L2 of the through hole 20a on the screw head 41 side. configured (to be deformed). Further, in the second embodiment, while the engagement state of the fixing screw 40 with the female threaded portion 211b is maintained, the fixing screw 40 is loosened from the female threaded portion 211b. The protective cover 20 is detachable from the frame 211 by relaxing the bending of the sleeve 230 so that it becomes smaller than the diameter L2 of the through hole 20a (see FIG. 11).

Next, attachment and detachment of the protective cover 20 with respect to the frame 211 will be described.

First, as shown in FIG. 9, the sleeve 230 is arranged on the X1 side of the frame 211 so that the cavity 230a inside the sleeve 230 and the through hole 211a of the frame 211 communicate with each other. Then, as shown in FIG. 10, the body portion 42 of the fixing screw 40 is inserted into (the cavity 230a inside) the sleeve 230, and the body portion 42 is inserted into the female screw portion 211b formed in the through hole 211a of the frame 211. be concluded. As a result, the sleeve 230 and the fixing screw 40 are fixed to the frame 211 .

Then, as shown in FIG. 11 , while the sleeve 230 and the fixing screw 40 are fixed to the frame 211 , the screw head 41 and the sleeve 230 of the fixing screw 40 are inserted through the protective cover 20 . As a result, the protective cover 20 is arranged near the protective cover 20 side (X1 side) of the frame 211 . Although FIG. 11 shows the protective cover 20 in contact with the frame 211 , the protective cover 20 may be arranged at least closer to the frame 211 (X2 side) than the screw head 41 .

Then, as shown in FIG. 12, the fixing screw 40 is tightened into the through hole 211a of the frame 211 from the protective cover 20 side (X1 side). Then, the distance between the screw head 41 of the fixing screw 40 and the protective cover 20 becomes smaller. As a result, a portion of the sleeve 230 bends outward in the radial direction of the sleeve 230 on the side of the screw head 41 (the side (X1 side) opposite to the frame 211 side (X2 side) of the protective cover 20) ( deforms elastically). Then, a portion of the sleeve 230 bends to a diameter L24a larger than the diameter L2 of the through hole 20a, and the fixing screw 40 is pushed until the bent portion comes into contact with the surface of the protective cover 20 on the X1 side. The protective cover 20 is fixed to the frame 211 by being tightened.

11 and 12 can be reversed to remove protective cover 20 from frame 211 without removing sleeve 230 and fixing screw 40 from frame 211 . That is, from the state in which the protective cover 20 is fixed to the frame 211 (the state shown in FIG. 12) due to the bending of the sleeve 230, the tightening of the fixing screw 40 to the fastening nut 33 is relaxed, so that the screw head 41 side is On the side (X1 side) opposite to the frame 211 side (X2 side) of the protective cover 20, the sleeve 230 returns to the state (state shown in FIG. 11) where the sleeve 230 is no longer flexed. Thereby, it is possible to easily remove only the protective cover 20 from the frame 211 without removing the sleeve 230 and the fixing screw 40 from the frame 211 .

Other configurations of the power receiving and transforming equipment 200 according to the second embodiment are the same as those of the first embodiment.

(Effect of Second Embodiment)
The following effects can be obtained in the second embodiment.

In the second embodiment, as described above, with the housing 200a for power receiving and transforming equipment in a state where the protective cover 20 is arranged on the frame 211, the fixing screw 40 is inserted through the through hole 20a from the protective cover 20 side. At the same time, the sleeve 230 is flexed larger than the diameter L2 of the through hole 20a on the screw head 41 side by being fastened to the female screw portion 211b provided on the frame 211 side while the sleeve 230 is inserted. configured as As a result, on the screw head 41 side, the sleeve 230 is bent more than the diameter L2 of the through hole 20a. A protective cover 20 can be fixed to the body 211 . Further, by loosening the fastening of the fixing screw 40 to the female threaded portion 211b, the degree of deflection of the sleeve 230 can be reduced. By doing so, the fixing of the protective cover 20 to the frame 211 can be released. In addition, since the diameter L6 of the screw head 41 is smaller than the diameter L2 of the through hole 20a, the through hole 20a is inserted into the screw head 41 while the fixing screw 40 is loosened from the female screw 211b. By moving the protective cover 20 away from the frame 211, the fixing screw 40 can be removed from the through hole 211a. As a result, like the first embodiment, the protective cover 20 can be easily removed from the frame 211 while preventing the frame 211 and the protective cover 20 from being unfixed.

Further, in the second embodiment, as described above, the sleeve 230 is configured to be inserted through the through hole 20a from the protective cover 20 side. A female screw portion 211 b is provided in the through hole 211 a of the frame 211 . Accordingly, since the through hole 211a of the frame 211 is provided with the female screw portion 211b, it is possible to suppress an increase in the number of parts, unlike the case where a nut member to be fastened to the fixing screw 40 is separately provided. .

Other effects of the second embodiment are the same as those of the first embodiment.

[Modification]
The embodiments disclosed this time should be considered illustrative and not restrictive in all respects. The scope of the present invention is indicated by the scope of the claims rather than the description of the above-described embodiments, and includes all modifications (modifications) within the scope and meaning equivalent to the scope of the claims.

For example, in the first embodiment, the diameter L5 of the flange portion 32 is set to be larger than the diameter L2 of the through hole 20a of the protective cover, but the present invention is not limited to this. In the present invention, the diameter L5 of the flange portion 32 may be configured to be smaller than the diameter L2 of the through hole 20a of the protective cover. However, the diameter L5 of the flange portion 32 must be at least larger than the diameter L1 of the through hole 11a.

Further, in the first and second embodiments, the diameter L6 of the screw head 41 of the fixing screw 40 is smaller than the diameter L2 of the through hole 20a, and the diameter (outer diameter) of the sleeve 31 (sleeve 230) of the rubber nut 30 is ) is substantially equal to L4, the present invention is not limited to this. In the present invention, the diameter L6 of the screw head 41 of the fixing screw 40 may be substantially equal to the diameter (outer diameter) L4 of the sleeve 31 (sleeve 230) of the rubber nut 30. However, the diameter L6 of the screw head 41 of the fixing screw 40 must be at least smaller than the diameter L2 of the through hole 20a.

Further, in place of the frame body 211 of the second embodiment, as in the power receiving and transforming equipment 300 shown in FIG. It may be configured to include a frame 311 that is thicker than the thickness. Thereby, even when the thickness of the frame 311 is small, it is possible to easily form a “female screw portion” for fastening the fixing screw 40 . The through hole 311a is an example of the "first through hole" in the scope of claims. Also, the frame 311 is an example of the "mounting portion" in the scope of claims.

In addition, in the first and second embodiments described above, examples were shown in which a plurality of "first through holes" and "second through holes" in the claims were provided. It is not limited to this. In the present invention, one each of the first through-hole and the second through-hole may be provided.

1 power receiving and transforming unit 11a, 211a, 311a through hole (first through hole)
11, 211, 311 frame (mounting part)
20a through hole (second through hole)
20 protective cover (cover member)
30 rubber nut (flexible member)
31 sleeve (body)
32 flange portion 33 fastening nut (female screw portion, nut member)
40 fixing screw (screw member)
41 screw head 42 body (of screw member) 100, 200, 300 power receiving and transforming equipment 100a, 200a, 300a housing, housing for power receiving and transforming equipment 211a through hole (first through hole, female screw portion)
230 sleeve (flexible member)
L1 (first through hole) diameter L2 (second through hole) diameter L4, L4a (main body) diameter L5 (flange) diameter L6 (screw head) diameter

Claims (6)

A power receiving and transforming equipment housing including a switchboard or a distribution board,
a mounting portion disposed inside the housing for power receiving and transforming equipment and having a first through hole formed thereon;
a cover member having a second through hole and attached to the attachment portion;
a screw member provided with a screw head having a diameter smaller than the diameter of the second through hole and a body;
a flexible member having flexibility through which the barrel portion of the screw member is inserted;
with
The flexible member is inserted through at least the second through hole of the first through hole and the second through hole,
In a state where the cover member is arranged on the mounting portion, the screw member is inserted from the cover member side through the second through hole and the first through hole and through the flexible member. , the power receiving and transforming equipment, wherein the flexible member is bent larger than the diameter of the second through hole on the screw head side by being fastened to the female screw portion provided on the mounting portion side. housing for By loosening the fastening of the screw member to the female thread portion while the engagement state of the screw member with the female thread portion is maintained, the flexible member moves to the above-mentioned position on the screw head side. 2. The housing for power receiving and transforming equipment according to claim 1, wherein said cover member is configured to be detachable from said mounting portion by being relieved from bending so as to be smaller than the diameter of said second through hole. a plurality of the first through-holes of the mounting portion and a plurality of the second through-holes of the cover member;
The housing for power receiving and transforming equipment according to claim 1 or 2, wherein the diameter of said second through hole is larger than the diameter of said first through hole. The flexible member is
a body portion that is inserted through both the first through hole and the second through hole from the cover member side;
a flange portion connected to the main body portion, arranged on the opposite side of the mounting portion from the cover member side, and having a diameter larger than that of the main body portion;
including
4. The housing for power receiving and transforming equipment according to claim 1, wherein said female screw portion includes a nut member fixed to said flange portion. The flexible member is configured to be inserted through the second through hole from the cover member side,
The housing for power receiving and transforming equipment according to any one of claims 1 to 3, wherein the female screw portion is provided in the first through hole of the mounting portion. a power receiving and transforming unit including a switchboard or a distribution board;
a housing housing the power receiving and transforming unit;
prepared,
The housing is
a mounting portion having a first through hole;
a cover member having a second through hole and attached to the attachment portion;
a screw member provided with a screw head having a diameter smaller than the diameter of the second through hole and a body,
a flexible member having flexibility through which the barrel of the screw member is inserted;
The flexible member is inserted through at least the second through hole of the first through hole and the second through hole,
In a state where the cover member is arranged on the mounting portion, the screw member is inserted from the cover member side through the second through hole and the first through hole and through the flexible member. , the power receiving and transforming equipment, wherein the flexible member is bent larger than the diameter of the second through hole on the screw head side by being fastened to the female screw portion provided on the mounting portion side. .

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