CN110649470A

CN110649470A - Cover body and distribution board

Info

Publication number: CN110649470A
Application number: CN201910553918.1A
Authority: CN
Inventors: 山口博章; 田中修平; 河原光之介
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-06-27
Filing date: 2019-06-25
Publication date: 2020-01-03
Anticipated expiration: 2039-06-25
Also published as: JP7065347B2; CN110649470B; JP2020005391A

Abstract

The invention provides a cover body and a distribution board which can realize an opening and closing mechanism of an opening and closing cover while reducing the number of components. The cover main body (21) has an exposure window for exposing the breaker in a state of being mounted on the box body. The first opening/closing cover (22) is held by a cover body (21) and can rotate between a closed position for covering the exposure window and an open position for exposing the exposure window. The first opening/closing cover (22) has a first rotation shaft (212) and one of first bearings (221) that can rotate around the first rotation shaft (212) while holding the first rotation shaft (212). A specific member composed of one of the case and the cover body (21) has the other of the first rotation shaft (212) and the first bearing (221). An opening portion 2211 is provided in a part of the first bearing 221 in the rotation direction. The first rotation shaft (212) is held by the first bearing (221) in a state where the first bearing (221) is fitted from the open portion (2211) of the first bearing (221).

Description

Cover body and distribution board

Technical Field

The present disclosure relates to a cover and a distribution board provided with the cover. More specifically, the present disclosure relates to a cover attached to a box and a distribution board including the cover.

Background

Conventionally, a distribution board for a house (for example, JPH 11-155206 (hereinafter referred to as "document 1")) is known. The distribution board described in document 1 includes a box (box), a plurality of switches (circuit breakers) housed in the box, and an opening frame (cover) with a door screwed to an opening edge of the box.

In the distribution board described in document 1, in order to realize the opening and closing mechanism of the door with respect to the opening frame, the opening frame must be coupled to the door by another member such as a hinge, which causes a problem of an increase in the number of components.

Disclosure of Invention

An object of the present disclosure is to provide a cover body and a distribution board that can realize an opening and closing mechanism that opens and closes the cover while reducing the number of components.

The distribution board according to one aspect of the present disclosure includes a box body and a cover body. The case has an opening portion on one surface thereof, and houses the circuit breaker. The cover is attached to the case so as to close the opening. The cover body includes a cover main body and an opening/closing cover. The cover main body has an exposure window for exposing the circuit breaker in a state of being mounted on the box body. The opening/closing cover is held by a specific member formed of one of the case and the cover main body, and is rotatable between a closed position covering the exposure window and an open position exposing the exposure window. The shutter cover has one of a rotation shaft and a bearing capable of rotating around the rotation shaft while holding the rotation shaft. The specific member includes the other of the rotating shaft and the bearing. The bearing is provided with an opening portion at a part in a rotation direction. The rotating shaft is held by the bearing in a state where the rotating shaft is fitted into the bearing from the open portion of the bearing.

A cover according to an aspect of the present disclosure is used for the power distribution board described above.

Effects of the invention

According to the present disclosure, the opening and closing mechanism of the opening and closing cover can be realized while reducing the number of components.

Drawings

Fig. 1A is a front view showing a state in which a distribution board according to an embodiment is mounted on a building member.

FIG. 1B is a cross-sectional view X1-X1 of FIG. 1A.

Fig. 2 is a front view of the cover body removed from the distribution board.

Fig. 3A is a front view of a cover main body of the cover body of the embodiment.

Fig. 3B is a right side view of the cover main body of the cover body.

Fig. 4A is a rear view of the first opening/closing cover of the cover body.

Fig. 4B is a left side view of the first opening/closing cover of the cover body.

Fig. 5A is a rear view of the second opening/closing cover of the cover body.

Fig. 5B is a plan view of the second opening/closing cover of the cover body.

FIG. 6A is a cross-sectional view X2-X2 of FIG. 1A.

FIG. 6B is a cross-sectional view X3-X3 of FIG. 1A.

Fig. 7 is a perspective view of the cover body in a state where the first opening/closing cover and the second opening/closing cover are opened.

Fig. 8A is an enlarged view of the portion Y1 of fig. 7.

Fig. 8B is an enlarged view of the portion Y2 of fig. 7.

Fig. 9 is an enlarged view of the cover body in a state where the second opening/closing cover is opened.

Fig. 10A is an explanatory diagram for explaining the operation of the first opening/closing cover with respect to the cover main body in the cover body.

Fig. 10B is an explanatory diagram for explaining the operation of the first opening/closing cover with respect to the cover main body in the cover body.

Fig. 10C is an explanatory diagram for explaining the operation of the first opening/closing cover with respect to the cover main body in the cover body.

Fig. 10D is an explanatory diagram for explaining the operation of the first opening/closing cover with respect to the cover main body in the cover body.

Fig. 11 is a front view showing a state in which the distribution board of modification 1 of the embodiment is mounted on a building member.

Fig. 12 is a sectional view showing a main part of a distribution board according to modification 2 of the embodiment.

Fig. 13 is a sectional view showing a main part of a cover body according to modification 3 of the embodiment.

Fig. 14 is a sectional view showing a main part of a cover body according to modification 4 of the embodiment.

Fig. 15 is a cross-sectional view showing a main part of a cover body according to modification 5 of the embodiment.

Description of the reference numerals

1 case body

2 cover body

5 breaker

10 switchboard

21 cover body

22 first opening and closing cover (opening and closing cover)

110 opening part

211 exposing window

212 first rotating shaft (rotating shaft)

214 contact sheet

215 contact shaft

221 first bearing (Bearings)

223 Rib

242. 243 limiting wall

2211 opening part

Detailed Description

The embodiment and the modifications described below are merely examples of the present disclosure. The present disclosure is not limited to the embodiments and the modifications, and various modifications may be made in accordance with design and the like without departing from the scope of the technical idea of the present disclosure. The drawings described in the embodiments and the modifications below are schematic views, and the ratio of the size and thickness of each component in the drawings does not necessarily reflect the actual dimensional ratio.

(embodiment mode)

(1) Summary of the invention

The outline of the distribution board 10 and the cover 2 according to the present embodiment will be described below with reference to fig. 1A, 1B, and 2.

In the following description, the left-right direction of the distribution board 10 is defined as an X-axis direction, the up-down direction is defined as a Y-axis direction, and the front-back direction is defined as a Z-axis direction. The right side of the switchboard 10 is defined as the positive direction of the X axis, and the left side is defined as the negative direction of the X axis. The upper side of the distribution board 10 is defined as the positive direction of the Y axis, and the lower side is defined as the negative direction of the Y axis. The front of the switchboard 10 is defined as the positive direction of the Z-axis, and the rear is defined as the negative direction of the Z-axis.

The distribution board 10 of the present embodiment is used for a single residence, for example. The distribution board 10 is not limited to a single residence, and may be used for each resident, office, store, and the like of a collective residence. As shown in fig. 1A and 1B, the distribution board 10 is mounted to a building member 100 such as a wall in a single residence.

As shown in fig. 1A to 4B, the distribution board 10 of the present embodiment includes a case 1 and a cover 2. The case 1 has an opening 110 on one surface (front surface) and houses the breaker 5. Cover 2 is attached to case 1 so as to close opening 110. The cover 2 includes a cover main body 21 and a (first) opening/closing cover 22. The cover main body 21 has an exposure window 211 for exposing the breaker 5 when attached to the case 1. The (first) opening/closing cover 22 is held by a specific member (here, the cover main body 21) constituted by one of the case 1 and the cover main body 21, and is rotatable between a closed position covering the exposure window 211 and an open position exposing the exposure window 211. The (first) opening/closing cover 22 includes the (first) rotation shaft 212 (see fig. 3A) and one of the (first) bearings 221 (see fig. 4A) rotatable around the (first) rotation shaft 212 while holding the (first) rotation shaft 212. The specific member includes the other of the (first) rotation shaft 212 and the (first) bearing 221. The (first) bearing 221 is provided with an open portion 2211 in a part in the rotation direction. The (first) rotating shaft 212 is held by the (first) bearing 221 in a state where the (first) bearing 221 is fitted from the opening 2211 of the (first) bearing 221.

As shown in fig. 2, the distribution board 10 of the present embodiment further includes a breaker(s) 5. The cover 2 of the present embodiment is used for the power distribution board 10.

As shown in fig. 1A and 1B, the distribution board 10 of the present embodiment is mounted on a building member 100. In this state, the box 1 is embedded in the building element 100 (see fig. 1B). That is, in a state where the distribution board 10 is attached to the building member 100, the box 1 is embedded in the building member 100, and only the cover 2 is exposed.

In the distribution board 10 of the present embodiment, as described above, the first opening/closing cover 22 includes one of the first rotation shaft 212 and the first bearing 221, and the specific member constituted by one of the case 1 and the cover main body 21 includes the other of the first rotation shaft 212 and the first bearing 221. Further, the first bearing 221 is fitted into the first rotation shaft 212 from the opening 2211 of the first bearing 221, whereby the first opening/closing cover 22 is rotatably held by the specific member. As described above, according to the distribution board 10 of the present embodiment, the opening/closing mechanism of the first opening/closing cover 22 is configured by the first rotation shaft 212 and the first bearing 221, and the opening/closing mechanism of the first opening/closing cover 22 can be realized while reducing the number of components.

Further, as in the distribution board 10 of the present embodiment, when the box body 1 is embedded in the building member 100, the amount of projection from the surface of the building member 100 can be reduced as compared with the case where the box body 1 is attached to the surface of the building member 100.

(2) Detailed description of the invention

The following describes the detailed description of the distribution board 10 according to the present embodiment with reference to fig. 1A to 5B. As shown in fig. 1A, 1B, and 2, the distribution board 10 of the present embodiment includes a box 1 and a cover 2.

(2.1) case

As shown in fig. 2, the case 1 is a rectangular case having an opening 110 on one surface (front surface) and being long in the left-right direction. The opening 110 has a rectangular shape elongated in the left-right direction. The case 1 includes a housing 11A and a pair of side plates 11B. The case 11A is formed in a U shape when viewed from the left-right direction, for example, from synthetic resin such as abs (acrylonitrile Butadiene styrene) resin (see fig. 1B). A plurality of knock-out holes for threading are provided in the upper surface and the lower surface of the housing 11A, respectively. Each of the pair of side plates 11B is formed of, for example, a metal plate into a rectangular plate shape that is long in the vertical direction. The pair of side plates 11B are attached to the housing 11A by an appropriate means (for example, screw fastening) so as to close the openings on both the left and right sides of the housing 11A.

A plurality of (sixteen in the illustrated example) circuit breakers 5 are housed in the case 1. The plurality of breakers 5 are attached to the case 1 via a pair of attachment fittings 3 and a rail 4 in a state of being aligned in the left-right direction. That is, the distribution board 10 further includes a mounting fitting 3 that holds the breaker 5 and is mounted to the box 1.

The pair of attachment fittings 3 includes a first attachment portion 31, a second attachment portion 32, a connection portion 33, and a case-side fixing portion 34, respectively. In the present embodiment, the first attachment portion 31, the second attachment portion 32, the coupling portion 33, and the case-side fixing portion 34 are integrally formed of, for example, a metal plate.

The first mounting portion 31 is formed in a rectangular plate shape that is long in the vertical direction. The first mounting portion 31 has a plurality of (two in the illustrated example) fitting insertion holes 311. The plurality of fitting insertion holes 311 are so-called keyhole holes. A fixing screw for mounting for fixing the mounting fixture 3 to the housing 1 is inserted into one of the plurality of insertion holes 311 for mounting fixture. The second mounting portion 32 is formed in a rectangular plate shape that is long in the vertical direction. The second mounting portion 32 has a plurality of rail insertion holes. Rail fixing screws for fixing the rail 4 to the mounting fittings 3 are inserted into the plurality of rail insertion holes. These first attachment portion 31 and second attachment portion 32 are integrally formed (connected) by a connection portion 33. When the attachment fitting 3 is attached to the housing 1 as viewed from above, the connection portion 33 is inclined obliquely to the right or obliquely to the left.

The case-side fixing portion 34 is formed in a rectangular shape by cutting and raising a part of the coupling portion 33 when viewed from the front. The case-side fixing portion 34 has a screw hole 341 penetrating in the front-rear direction. A fixing screw for fixing the cover body 2 to the case 1 is screwed into the screw hole 341. In other words, the case-side fixing portion 34 is provided in a specific member attached to the case 1, and has a screw hole 341 into which a fixing screw inserted through an insertion hole 2171 (described later) is screwed. In the present embodiment, the case-side fixing portion 34 is provided in the mounting metal fitting 3, and the mounting metal fitting 3 is a specific member.

The guide 4 is, for example, a DIN guide in accordance with JIS-C-2812. The guide rail 4 is formed in a long shape long in the left-right direction. Two screw holes 41 are provided at both ends of the guide rail 4. The above-described rail fixing screws are screwed into these screw holes 41.

Each of the plurality of breakers 5 has a housing 51 formed in a rectangular parallelepiped shape. An operating lever 52 for turning on/off the circuit breaker 5 is provided on the front surface of the housing 51.

Further, a plurality of terminal blocks 6 are housed inside the case 1. The plurality of terminal blocks 6 are arranged in the left-right direction at the upper end of the case 1. The plurality of breakers 5 and the plurality of terminal blocks 6 are electrically connected to each other by electric wires.

(2.2) cover body

As shown in fig. 1A and 1B, the cover body 2 includes a cover main body 21, a first opening/closing cover (opening/closing cover) 22, and a plurality of (two in the illustrated example) second opening/closing covers 23. Each of the cover main body 21, the first opening/closing cover 22, and the second opening/closing cover 23 is formed of, for example, synthetic resin such as ABS resin. The first opening/closing cover 22 can be opened and closed with respect to the cover main body 21 by a first rotating mechanism 12 (described later). Each of the plurality of second opening/closing covers 23 can be opened/closed with respect to the cover main body 21 by a second rotating mechanism 13 (described later).

(2.2.1) cover body

As shown in fig. 3A and 3B, the cover main body 21 is formed in a rectangular plate shape that is long in the left-right direction. The outer dimensions (vertical and horizontal dimensions) of the cover main body 21 are larger than those of the case 1. Therefore, in a state where cover 2 is attached to case 1, case 1 is covered with cover 2, and case 1 is not visible from the front.

The cover main body 21 has a first region a1 and a plurality of (two in the illustrated example) second regions a 2. The first region a1 is rectangular in shape that is long in the left-right direction when viewed from the front (front). The first region a1 is located in the center of the cover main body 21. Each of the plurality of second regions a2 has a rectangular shape that is long in the vertical direction when viewed from the front. The plurality of second regions a2 are located on both sides of the first region a1 in the left-right direction.

The first region a1 includes an exposure window 211, a plurality of (two in the illustrated example) first rotation shafts (rotation shafts) 212, a plurality of (two in the illustrated example) second contact portions 213, a plurality of (two in the illustrated example) contact pieces 214, and a contact shaft 215. In the first region a1, a hook hole 241 and a plurality of (two in the illustrated example) restricting walls 242 are provided.

In other words, the cover 2 has an exposure window 211 for exposing the circuit breaker 5 when attached to the case 1. Further, the specific member constituted by one of the case 1 and the cover main body 21 has one of the first rotation shaft 212 and the first bearing 221. The first member formed of one of the specific member and the first opening/closing cover 22 has a contact piece 214, and the contact piece 214 is brought into contact with the second member formed of the other of the specific member and the first opening/closing cover 22 when the first opening/closing cover 22 is rotated. The first member formed of the specific member and one of the first opening/closing covers 22 has a contact shaft 215. In the present embodiment, the cover main body 21 is a specific member and a first member, and the first opening/closing cover 22 is a second member.

As shown in fig. 3A, the exposure window 211 is rectangular and long in the left-right direction, and is located in the center of the first region a 1. The exposure window 211 is formed in a size that can expose functional portions (portions where the operation levers 52 are provided) of the plurality of breakers 5 attached to the guide rail 4. Therefore, even in a state where the cover 2 is attached to the case 1, the circuit breaker 5 can be turned on/off by the operating lever 52 (see fig. 2) exposed from the exposure window 211.

As shown in fig. 3A, the plurality of first rotating shafts 212 are located at both ends in the left-right direction and at the upper end of the first area a 1. More specifically, the first rotation shafts 212 are provided at substantially the same positions as the first bearings 221 (described later) in the left-right direction in a state where the first opening/closing cover 22 is attached to the cover main body 21. The plurality of first rotation shafts 212 are arranged such that a rotation axis P1 (see fig. 3A) when the first opening/closing cover 22 rotates is oriented in the left-right direction. In other words, the plurality of first rotating shafts 212 are arranged such that the axial direction is oriented in the left-right direction. The cross-sectional shape of each of the plurality of first rotating shafts 212 is, for example, a regular pentagon. The cross-sectional shape of the first rotating shaft 212 is not limited to a regular pentagon, and may be circular or triangular.

As shown in fig. 3A, the plurality of second contact portions 213 are located at both ends in the left-right direction and at the upper end of the first region a 1. More specifically, the plurality of second contact portions 213 are provided at substantially the same positions as the plurality of first contact portions 222 (described later) in the left-right direction in a state where the first opening/closing cover 22 is attached to the cover main body 21. In the present embodiment, the cover main body 21 has the second contact portion 213, but the case 1 may have the second contact portion.

Each of the plurality of second contact portions 213 has a T-shape when viewed from the front (front). In other words, the second contact portion 213 has a T-shape when viewed from a direction (front-rear direction) orthogonal to one surface (front surface) of the housing 1. The plurality of second contact portions 213 includes first and

second pieces

2131 and 2132, respectively. The first piece 2131 is a rectangular plate shape that is long in the vertical direction and is configured to be able to flex in the front-rear direction. The first piece 2131 is elastically deformed between a first position and a second position, which will be described later. A protrusion 2133 protruding forward is integrally formed at the lower end of the first piece 2131. The protrusion 2133 has a triangular shape when viewed from the left-right direction. The second piece 2132 is a rectangular plate shape elongated in the left-right direction, and is formed integrally with the cover main body 21 at both ends in the left-right direction. The second piece 2132 functions as a connecting portion that connects the first piece 2131 to the cover main body 21.

As shown in fig. 3A, the plurality of contact pieces 214 are located at the upper end portion of the first area a1 and at the center portion in the left-right direction. That is, the plurality of contact pieces 214 are located at the center of the first member (cover main body 21) in the direction parallel to the first rotation shaft 212 (the left-right direction). Each of the plurality of contact pieces 214 is formed in a plate shape that is long in the front-rear direction when viewed from the left-right direction (see fig. 8B). The tip portions (tip portions) of the plurality of contact pieces 214 are R-chamfered. The plurality of contact pieces 214 are arranged at predetermined intervals in the left-right direction. These contact pieces 214 are in contact with the rear surface of the first opening/closing cover 22 during the opening/closing operation of the first opening/closing cover 22.

As shown in fig. 3A, the contact shaft 215 is located at the upper end of the first region a1 and at the center in the left-right direction. The contact shaft 215 is formed integrally with the plurality of contact pieces 214 at both ends in the left-right direction. The contact shaft 215 is disposed such that the axial direction is parallel to the rotation axis P1. The cross-sectional shape of the contact shaft 215 is, for example, a regular pentagon. The cross-sectional shape of the contact shaft 215 is not limited to a regular pentagon, and may be a circle or a triangle.

As shown in fig. 3A, the hooking hole 241 is located at the lower end portion and the center portion in the left-right direction of the first region a 1. The hooking hole 241 has a rectangular shape when viewed from the front, and penetrates in the front-rear direction.

As shown in fig. 3A, the plurality of restricting walls 242 are located at both ends in the left-right direction and at the upper end of the first region a 1. Each of the plurality of restricting walls 242 is formed in a plate shape that is long in the front-rear direction when viewed from the left-right direction (see fig. 8A). The respective front end portions (front end portions) of the plurality of restricting walls 242 are R-chamfered. The plurality of restricting walls 242 correspond one-to-one to the plurality of first rotating shafts 212. The plurality of regulating walls 242 are formed integrally with the first rotation shaft 212 at each of right and left end portions of the corresponding first rotation shaft 212 among the plurality of first rotation shafts 212. The end portions of the plurality of first rotating shafts 212 on the opposite side are integrally formed with a restricting wall 243 (see fig. 7) formed by side walls constituting the first area a 1. That is, in the cover 2 of the present embodiment, the restricting

walls

242 and 243 for restricting the movement of the first bearing 221 in the direction parallel to the first rotation shaft 212 are provided at both end portions of the first rotation shaft 212 in the direction parallel to the first rotation shaft 212 (the left-right direction).

The plurality of second areas a2 are provided with a recess 216, a cover-side fixing portion 217, and a plurality of (two in the illustrated example) second rotation shafts 218, respectively. The left second area a2 and the right second area a2 are left and right opposite to each other only in the positions of the cover-side fixing portion 217 and the plurality of second rotating shafts 218. Therefore, the left second region a2 will be described, and the right second region a2 will not be described.

As shown in fig. 3A, the concave portion 216 is formed over substantially the entire second region a2 while being recessed rearward. Here, in a state where the second opening/closing cover 23 attached to the cover main body 21 is closed, the housing space 9 is formed between the rear surface of the second opening/closing cover 23 and the bottom surface of the concave portion 261. In other words, in a state where each of the plurality of second opening/closing covers 23 is in the second closed position (described later), the housing space 9 is provided between each of the plurality of second opening/closing covers 23 and the bottom surface of the cover main body 21. The housing space 9 is used, for example, for attaching a label describing the name of the circuit breaker 5 or the like, housing a use instruction, or the like.

The cover-side fixing portion 217 is formed integrally with the bottom surface of the recess 216. As shown in fig. 3A, the cover-side fixing portion 217 is located at the right end portion of the bottom surface of the concave portion 216 and at the center portion in the vertical direction. The cover-side fixing portion 217 is formed in a rectangular shape when viewed from the front. The cover-side fixing portion 217 has an insertion hole 2171 through which the above-described fixing screw is inserted. In the distribution board 10 of the present embodiment, the cover body 2 can be fixed to the box body 1 by screwing the fixing screws inserted through the insertion holes 2171 of the cover-side fixing portions 217 into the screw holes 341 of the box-body-side fixing portions 34. That is, the fixing portion 8 including the case-side fixing portion 34 and the cover-side fixing portion 217 is a mounting structure (hereinafter, also referred to as "mounting structure 8") for mounting the cover 2 to the case 1.

As shown in fig. 3A, the plurality of second rotating shafts 218 are located on the left side of the recess 216. The plurality of second rotating shafts 218 are disposed at predetermined intervals in the vertical direction. More specifically, the second rotation shafts 218 are provided at substantially the same positions as the second bearings 231 (described later) in the vertical direction in a state where the second opening/closing cover 23 is attached to the cover main body 21. The plurality of second rotating shafts 218 are arranged such that the axial direction is oriented in the vertical direction. The cross-sectional shape of each of the plurality of second rotating shafts 218 is, for example, a regular pentagon. The cross-sectional shape of the second rotating shaft 218 is not limited to a regular pentagon, and may be circular or triangular.

A plurality of (two in the illustrated example) cover-side temporary holding portions 219 (see fig. 3B) projecting rearward are provided on the rear surface of the cover main body 21. The cover-side temporary holding portions 219 are provided at substantially the same positions as the coupling portions 33 of the plurality of mounting fittings 3 in the left-right direction in a state where the cover 2 is assembled to the box 1. That is, in a state where the cover 2 is assembled to the housing 1, the cover-side temporary holding portions 219 are placed on the coupling portions 33 of the corresponding attachment fittings 3 in the vertical direction. That is, in the present embodiment, the coupling portion 33 to which the metal fitting 3 is attached is a box-side temporary holding portion (hereinafter, also referred to as "box-side temporary holding portion 33"). As shown in fig. 3A, the plurality of cover-side temporary holding portions 219 are arranged symmetrically in the left-right direction. In the present embodiment, the left-right direction is the second direction.

As described above, the distribution board 10 of the present embodiment includes the temporary holding portion 7, and the temporary holding portion 7 includes the cover-side temporary holding portion 219 and the box-side temporary holding portion 33. The cover-side temporary holding portion 219 protrudes from the cover 2 toward the case 1. The case-side temporary holding portion 33 is provided in the attachment fitting 3 (specific member) attached to the case 1, and supports the cover-side temporary holding portion 219. With this configuration, the cover 2 can be temporarily held by the case 1 by the temporary holding portion 7.

The plurality of cover-side temporary holding portions 219 are located above the center of gravity G1 (see fig. 1A) of the cover body 2 in the vertical direction (vertical direction). According to this configuration, there is an advantage that the cover 2 is less likely to fall off the case 1 in a state where the cover 2 is temporarily held by the case 1.

(2.2.2) first shutter

As shown in fig. 4A and 4B, the first opening/closing cover 22 is formed in a rectangular plate shape that is long in the left-right direction. The outer dimensions (vertical dimension and horizontal dimension) of the first opening/closing cover 22 are substantially the same as the first region a1 of the cover main body 21. The first opening/closing cover 22 includes a plurality of (two in the illustrated example) first bearings 221, a plurality of (two in the illustrated example) first contact portions 222, a rib 223, and a hook 224.

In other words, the first opening/closing cover 22 has the first bearing 221. The first opening/closing cover 22 has a first contact portion 222. The second member (first shutter 22) including the specific member and one of the first shutters 22 includes a rib 223, and the rib 223 rotates around the contact shaft 215 along the contact shaft 215 when the first shutter 22 rotates.

As shown in fig. 4A, the plurality of first bearings 221 are located at both ends in the left-right direction and at the upper end of the rear surface of the first opening/closing cover 22. More specifically, the first bearings 221 are provided at substantially the same positions as the first rotation shafts 212 in the left-right direction in a state where the first opening/closing cover 22 is attached to the cover main body 21. Each of the first bearings 221 is formed in a cylindrical shape having a central axis in the left-right direction. Each of the first bearings 221 has an open portion 2211. The open portion 2211 is formed over the entire length of the rear end portion of the first bearing 221. The inner circumferential surfaces of the first bearings 221 are each a regular pentagon having the same cross section as the first rotating shaft 212. Therefore, when the first opening/closing cover 22 is opened/closed with respect to the cover main body 21, the position of the first opening/closing cover 22 can be adjusted in five stages. That is, in the distribution board 10 of the present embodiment, the first opening/closing cover 22 includes a plurality of (two in the illustrated example) first bearings 221. The first bearings 221 are located at both ends of the first opening/closing cover 22 in a direction parallel to the first rotation shaft 212 (left-right direction).

As shown in fig. 4A, the plurality of first contact portions 222 are located at both left and right ends of the upper end portion of the rear surface of the first opening/closing cover 22. More specifically, the plurality of first contact portions 222 are provided at substantially the same positions as the plurality of second contact portions 213 in the left-right direction in a state where the first opening/closing cover 22 is attached to the cover main body 21. The first contact portions 222 correspond to the first bearings 221 in a one-to-one manner. Here, a case is assumed where the distance between the plurality of first bearings 221 is L1. In this case, it is preferable that each of the plurality of first contact portions 222 is spaced apart from the corresponding first bearing 221 of the plurality of first bearings 221 in the left-right direction by L1/4 or less. With this configuration, the holding force of first contact portion 222 and second contact portion 213 against first opening/closing cover 22 can be increased as compared with the case where the distance from first bearing 221 to first contact portion 222 is greater than L1/4.

As shown in fig. 4B, the plurality of first contact portions 222 include first and second protruding pieces 2221 and 2222, respectively. The first projecting piece 2221 projects rearward from the rear surface of the first opening/closing cover 22. The second projecting piece 2222 projects upward from the front end (rear end) of the first projecting piece 2221. That is, each of the first contact portions 222 is formed in an L shape when viewed from the left-right direction. As shown in fig. 4B, each of the plurality of first contact portions 222 is located rearward of the main surface of the first opening/closing cover 22 in the front-rear direction. The "main surface" in the present disclosure refers to the largest surface of the first opening/closing cover 22, and specifically refers to the front surface or the rear surface of the first opening/closing cover 22.

In the distribution board 10 of the present embodiment, the first opening/closing cover 22 includes the plurality of (two in the illustrated example) first contact portions 222 as described above. The plurality of first contact portions 222 correspond one-to-one to a plurality of rotary structures (first bearings 221) located at both ends of the first opening/closing cover 22 in a direction parallel to the rotation axis P1.

As shown in fig. 4A, the rib 223 is located at the upper end portion and the center portion in the left-right direction in the rear surface of the first opening/closing cover 22. That is, the rib 223 is located at the center of the second member (the first opening/closing cover 22) in the direction parallel to the first rotation shaft 212 (the left-right direction). The rib 223 is formed in a rectangular plate shape when viewed from the up-down direction. The rib 223 rotates around the contact shaft 215 along the surface of the contact shaft 215 provided in the cover main body 21 when the first opening/closing cover 22 is opened and closed with respect to the cover main body 21.

As shown in fig. 4A, the hook 224 is located at the lower end portion and the center portion in the left-right direction in the rear surface of the first opening/closing cover 22. The hook 224 protrudes rearward from the rear surface of the first opening/closing cover 22. The hook 224 is inserted into a hook hole 241 provided in the cover main body 21 in a state where the first opening/closing cover 22 attached to the cover main body 21 is closed, and is hooked on an opening edge of the hook hole 241. This can keep the first opening/closing cover 22 closed.

In the distribution board 10 of the present embodiment, the first opening/closing cover 22 is attached to the cover main body 21 by fitting the corresponding first rotating shaft 212 into the first bearing 221 through the opening 2211 provided in each first bearing 221. In a state where the first opening/closing cover 22 is attached to the cover main body 21, the first bearing 221 is rotatable about the first rotation shaft 212 while holding the first rotation shaft 212. That is, in the present embodiment, the first rotation structure 12 of the first opening/closing cover 22 with respect to the cover main body 21 is realized by the first rotation shaft 212 and the first bearing 221. The first rotating structure 12 is provided at one end (upper end) in a direction parallel to the arrangement direction in which the first opening/closing cover 22 and the plurality of second opening/closing covers 23 are arranged and intersecting the arrangement direction. The first opening/closing cover 22 is rotatably held by the cover main body 21 via a first rotating mechanism 12 different from the second rotating mechanism 13.

(2.2.3) second shutter

As shown in fig. 5A and 5B, each of the second shutters 23 is formed in a rectangular plate shape that is long in the vertical direction. The outer dimensions (vertical dimension and horizontal dimension) of each of the second opening/closing covers 23 are substantially the same as the second region a2 of the cover main body 21. Each of the second shutters 23 has a plurality of (two in the illustrated example) second bearings 231. However, the positions of the plurality of second bearings 231 are reversed between the second opening/closing cover 23 attached to the left side of the cover main body 21 and the second opening/closing cover 23 attached to the right side of the cover main body 21. Therefore, here, the second opening/closing cover 23 attached to the left side of the cover main body 21 will be described, and the second opening/closing cover 23 attached to the right side of the cover main body 21 will not be described.

As shown in fig. 5A, a plurality of second bearings 231 are provided at the left end portion of the rear surface of the second opening/closing cover 23. The plurality of second bearings 231 are provided at predetermined intervals in the vertical direction. More specifically, the second bearings 231 are provided at substantially the same positions as the second rotation shafts 218 in the vertical direction in a state where the second opening/closing cover 23 is attached to the cover main body 21. Each of the second bearings 231 is formed in a cylindrical shape having a central axis in the vertical direction. The plurality of second bearings 231 each have an open portion 2311. The open portion 2311 is formed over the entire length of the rear end portion of the second bearing 231. The inner circumferential surfaces of the plurality of second bearings 231 are regular pentagons having the same cross section as the second rotating shaft 218. Therefore, when the second opening/closing cover 23 is opened/closed with respect to the cover main body 21, the position of the second opening/closing cover 23 can be adjusted in five stages.

In the distribution board 10 of the present embodiment, the second opening/closing cover 23 is attached to the cover main body 21 by fitting the corresponding second rotation shaft 218 into the second bearing 231 through the opening 2311 provided in each second bearing 231. In a state where the second opening/closing cover 23 is attached to the cover main body 21, the second bearing 231 can rotate around the second rotation shaft 218 while holding the second rotation shaft 218. That is, in the present embodiment, the second rotation structure 13 of the second opening/closing cover 23 with respect to the cover main body 21 is realized by the second rotation shaft 218 and the second bearing 231. The second rotating structure 13 is located on the opposite side (left or right side) of the first opening/closing cover 22 in the arrangement direction in the direction intersecting the arrangement direction. The plurality of second opening/closing covers 23 are rotatably held by the cover main body 21 via the second rotating mechanism 13.

(3) Structure of the product

(3.1) temporary holding Structure of cover body

The temporary holding structure of the cover 2 will be described below with reference to fig. 6A and 6B.

Fig. 6A is a sectional view of a main part showing a state where the cover body 2 is attached to the box body 1 embedded in the building element 100 (cross-sectional view X2-X2 in fig. 1A). In fig. 6A, it is assumed that cover 2 is not fixed to case 1 by fixing portion 8.

In the state shown in fig. 6A, the cover-side temporary holding portion 219 provided in the cover main body 21 of the cover 2 is placed on the box-side temporary holding portion (coupling portion) 33 in the vertical direction (vertical direction). Therefore, when fixing cover 2 to casing 1, cover 2 does not need to be held with one hand, and workability in attaching cover 2 to casing 1 can be improved.

Fig. 6B is another cross-sectional view of a main part showing a state where the cover body 2 is attached to the box 1 embedded in the building element 100 (cross-sectional view X3-X3 in fig. 1A).

As shown in fig. 6B, the cover-side fixing portion 217 provided in the cover body 21 of the cover 2 contacts the coupling portion 33 of the attachment fitting 3 attached to the box 1 in the left-right direction. Thereby, the movement of the cover 2 in the left-right direction is restricted in the state of being temporarily held by the housing 1. In other words, the movement of the cover 2 in the second direction (left-right direction) intersecting both the first direction (front-back direction) and the vertical direction (up-down direction) orthogonal to one surface (front surface) of the case 1 is restricted.

As shown in fig. 2 and 3A, the distribution board 10 preferably includes a plurality of (two in the illustrated example) temporary holding portions 7. The plurality of temporary holding portions 7 are preferably arranged symmetrically in the second direction (left-right direction). With this configuration, the cover 2 can be temporarily held in the case 1 with good balance.

(3.2) opening/closing Structure of first opening/closing cover

The opening and closing structure of the first opening/closing cover 22 will be described below with reference to fig. 7, 8A, and 8B. Fig. 7 is a perspective view of cover 2 in a state where first opening/closing cover 22 and second opening/closing cover 23 are opened. Fig. 8A is an enlarged view of the portion Y1 of fig. 7. Fig. 8B is an enlarged view of the portion Y2 of fig. 7.

The first opening/closing cover 22 is rotatably held by the cover main body 21 by a plurality of (two in the illustrated example) first rotating structures 12 including a plurality of (two in the illustrated example) first rotating shafts 212 and a plurality of (two in the illustrated example) first bearings 221. With this configuration, the opening/closing mechanism of the first opening/closing cover 22 can be realized by the first rotation shaft 212 and the first bearing 221. That is, according to the distribution board 10 of the present embodiment, the opening and closing mechanism of the first opening and closing cover 22 can be realized while reducing the number of components.

The plurality of first rotating structures 12 are located at one end (upper end) in a direction (vertical direction) parallel to the arrangement direction (horizontal direction) in which the first opening/closing cover 22 and the plurality of second opening/closing covers 23 are arranged and intersecting the arrangement direction.

The first opening/closing cover 22 can be opened/closed (moved) between a first closed position and a first open position by the plurality of first rotating mechanisms 12. The first closed position is a position (position shown in fig. 1A) that covers the exposure window 211 provided in the cover main body 21. The first position is a position (position shown in fig. 7) at which the exposure window 211 is exposed.

Here, the first rotating shaft 212 constituting a part of the first rotating mechanism 12 is provided with restricting

walls

242 and 243 on both left and right sides (see fig. 8A). Therefore, the movement of the first bearing 221 constituting a part of the first rotating mechanism 12 in the left-right direction can be restricted in a state where the first opening/closing cover 22 is attached to the cover main body 21. In other words, the movement of the first opening/closing cover 22 in the left-right direction with respect to the cover main body 21 can be restricted by the restricting

walls

242 and 243.

When the first opening/closing cover 22 is opened and closed, the plurality of contact pieces 214 protruding from the cover main body 21 come into contact with the rear surface of the first opening/closing cover 22 (see fig. 8B). This can suppress the first opening/closing cover 22 from being bent in the thickness direction thereof at the center portion in the left-right direction (longitudinal direction) of the first opening/closing cover 22. In the present embodiment, the restricting wall 242 protruding from the cover main body 21 also comes into contact with the rear surface of the first opening/closing cover 22 when the first opening/closing cover 22 is opened and closed. This also suppresses flexure of the first opening/closing cover 22 in the thickness direction, which occurs at both end portions of the first opening/closing cover 22 in the left-right direction. Further, the restricting wall 242 may not be configured to contact the rear surface of the first opening/closing cover 22.

When the first opening/closing cover 22 is opened and closed, the rib 223 provided on the first opening/closing cover 22 rotates around the contact shaft 215 along the contact shaft 215 provided on the cover main body 21. Therefore, even when the first opening/closing cover 22 is warped in the vertical direction (width direction) at the center portion in the horizontal direction (longitudinal direction), the rib 223 can be brought into contact with the contact shaft 215 to smoothly rotate the first opening/closing cover 22.

(3.3) opening/closing Structure of second opening/closing cover

The opening and closing structure of the second opening and closing cover 23 will be described below with reference to fig. 7 and 9. Fig. 7 is a perspective view of cover 2 in a state where first opening/closing cover 22 and second opening/closing cover 23 are opened. Fig. 9 is an enlarged view of a main part of the second opening/closing cover 23 in an opened state.

The second opening/closing cover 23 attached to the left side of the cover main body 21 is the same as the second opening/closing cover 23 attached to the right side of the cover main body 21, except that the structure is symmetrical in the left-right direction. Therefore, here, the opening and closing structure of the second opening and closing cover 23 attached to the left side of the cover main body 21 will be described, and the description of the second opening and closing cover 23 attached to the right side of the cover main body 21 will be omitted.

The second opening/closing cover 23 is rotatably held by the cover main body 21 by a plurality of (two in the illustrated example) second rotating structures 13 including a plurality of (two in the illustrated example) second rotating shafts 218 and a plurality of (two in the illustrated example) second bearings 231.

The plurality of second rotating structures 13 are located on the opposite side (left side in fig. 9) of the first opening/closing cover 22 in the arrangement direction (vertical direction) parallel to the direction (left-right direction) intersecting the arrangement direction (left-right direction) in which the first opening/closing cover 22 and the plurality of second opening/closing covers 23 are arranged.

The second opening/closing cover 23 can be opened/closed (moved) between the second closed position and the second open position by the plurality of second rotating mechanisms 13. The second closed position is a position (position shown in fig. 1A) that covers the mounting structure 8 provided on the cover main body 21. The second open position is a position (position shown in fig. 9) in which the mounting structure 8 is exposed.

As shown in fig. 7 and 9, a concave portion 2431 that is concave in the thickness direction (left-right direction) of the limiting wall 243 is formed in the limiting wall 243 located between the first region a1 and the second region a2 of the cover main body 21. When opening the second opening/closing cover 23, a user (for example, a resident of a single house) can easily open the second opening/closing cover 23 by hooking a finger to the peripheral edge of the second opening/closing cover 23 by bringing the finger along the concave portion 2431. That is, in the present embodiment, cover main body 21 has concave portion 2431 having a step with the peripheral edge portion of second opening/closing cover 23 in the second closed position. In other words, the cover main body 21 has a step with the second opening/closing cover 23.

In the present embodiment, the second rotating structure 13 of the second shutter 23 is located on the opposite side of the first shutter 22 in the arrangement direction in which the first shutter 22 and the plurality of second shutters 23 are arranged. Thereby, the second opening/closing cover 23 is opened in a direction away from the first opening/closing cover 22. Therefore, even in a state where the second opening/closing cover 23 is kept open, there is an advantage that it is difficult to cause an obstacle when the first opening/closing cover 22 is opened.

Here, a case is assumed where both the circuit breaker 5 and the mounting structure 8 are covered by one opening/closing cover. In this case, when the opening/closing cover is opened in order to expose the breaker 5, there is a problem that the mounting structure 8 can be seen as well as the breaker 5. In contrast, in the present embodiment, the first opening/closing cover 22 for covering the circuit breaker 5 and the second opening/closing cover 23 for covering the mounting structure 8 are provided separately. Therefore, by opening the first opening/closing cover 22 in a state where the second opening/closing cover 23 is closed, the mounting structure 8 can be made invisible in a state where the circuit breaker 5 is exposed.

The first rotating structure 12 of the first opening/closing cover 22 is provided along the arrangement direction (left-right direction) in which the first opening/closing cover 22 and the plurality of second opening/closing covers 23 are arranged. On the other hand, the second rotating structure 13 of the second opening/closing cover 23 is provided along a direction (vertical direction) intersecting the arrangement direction. That is, in the distribution board 10 of the present embodiment, the opening and closing direction of the first opening and closing cover 22 is different from the opening and closing direction of the second opening and closing cover 23.

(3.4) holding Structure of first shutter

The structure for holding the first opening/closing cover 22 will be described below with reference to fig. 10A to 10D.

Fig. 10A shows a state where the first opening/closing cover 22 is closed, that is, a state where the first opening/closing cover 22 is in the first closed position. In this state, the first contact portion 222 is not in contact with the second contact portion 213. In addition, the position of the second contact portion 213 shown in fig. 10A is the first position.

From the state shown in fig. 10A, the first opening/closing cover 22 is rotated clockwise when viewed from the right side (see fig. 10B), and the first opening/closing cover 22 is rotated to a position where the tip portion 2223 of the first contact portion 222 contacts the projection 2133 of the second contact portion 213 (see fig. 10C). That is, in the present embodiment, the distal end portion 2223 of the first contact portion 222 is in contact with the second contact portion 213. In this state, the second contact portion 213 is bent backward by the force applied from the first contact portion 222. In other words, the second contact portion 213 is elastically deformed by the force from the first contact portion 222. In addition, the position of the second contact portion 213 shown in fig. 10C is the second position.

When the first opening/closing cover 22 is further rotated from the state shown in fig. 10C, the distal end portion 2223 of the first contact portion 222 comes to pass over the protrusion 2133 of the second contact portion 213 (see fig. 10D). At this time, the second contact portion 213 loses the force from the first contact portion 222, and is thereby restored from the second position to the first position. In this state, the tip portion 2223 of the first contact portion 222 contacts the projection 2133 of the second contact portion 213 from below, and the rotation of the first opening/closing cover 22 in the direction in which the first opening/closing cover 22 is closed is restricted, and the state in which the first opening/closing cover 22 is opened is maintained.

In the distribution board 10 of the present embodiment, the first contact portion 222 provided in the first opening/closing cover 22 and the second contact portion 213 provided in the cover main body 21 can maintain the state in which the first opening/closing cover 22 is opened. That is, according to the distribution board 10 of the present embodiment, the state in which the first opening/closing cover 22 is opened can be maintained while reducing the number of components.

In the distribution board 10 of the present embodiment, as shown in fig. 10A, the first contact portion 222 is located closer to the case 1 (rear side) than the main surface (front surface or rear surface) of the first opening/closing cover 22 in the first closed position of the first opening/closing cover 22. Therefore, there is an advantage that the first contact portion 222 is hardly visible in a state where the first opening/closing cover 22 is closed.

In the distribution board 10 of the present embodiment, as described above, the distal end portion 2223 of the first contact portion 222 is configured to contact (the protrusion 2133 of) the second contact portion 213. Therefore, the distance from the first rotating structure 12 (the first rotating shaft 212 and the first bearing 221) to the contact point between the first contact portion 222 and the second contact portion 213 can be increased, and the force applied from the first contact portion 222 to the second contact portion 213 can be reduced. As a result, the second contact portion 213 is less likely to be scraped, compared to the case where the distance from the first rotating structure 12 to the contact point is short.

In the distribution board 10 of the present embodiment, the second contact portion 213 is located closer to the case side (rear side) than the first rotating structure 12. Therefore, there is an advantage that the second contact portion 213 is hardly visible in a state where the first opening/closing cover 22 is opened.

(4) Modification example

The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be variously modified according to design and the like as long as the object of the present disclosure can be achieved. Modifications of the above embodiment will be described below. The modifications described below can be applied in appropriate combinations.

(4.1) modification 1

In the above-described embodiment, the first opening/closing cover 22 for covering the circuit breaker 5 and the second opening/closing cover 23 for covering the mounting structure 8 are provided separately, but as shown in fig. 11, only the first opening/closing cover 22A for covering both the circuit breaker 5 and the mounting structure 8 may be provided. In other words, the second opening/closing cover 23 for covering the mounting structure 8 may be omitted. The distribution board 10A of modification 1 will be described below with reference to fig. 11. The components other than the first opening/closing cover 22A are the same as those of the distribution board 10 of the above-described embodiment, and the same reference numerals are given to the same components, and the description thereof is omitted.

The distribution board 10A of modification 1 includes a case 1 and a cover 2A. The cover body 2A includes a cover main body 21 and a first opening/closing cover 22A.

The left-right dimension of the first opening/closing cover 22A is substantially the same as the left-right dimension of the cover main body 21. That is, in modification 1, the first opening/closing cover 22A is formed in a size capable of covering both the breaker 5 and the mounting structure 8 exposed through the exposure window 211 provided in the cover main body 21.

According to the distribution board 10A of modification 1, the opening and closing mechanism of the first opening and closing cover 22A can be realized by the plurality of first rotation shafts 212 provided in the cover main body 21 and the plurality of first bearings 221 provided in the first opening and closing cover 22A. That is, according to the distribution board 10A of modification 1, the opening and closing mechanism of the first opening and closing cover 22A can be realized while reducing the number of components.

(4.2) modification 2

In the above-described embodiment, the coupling portion 33 of the attachment fitting 3 (specific member) attached to the housing 1 is a housing-side temporary holding portion, but, for example, as shown in fig. 12, the S-shaped holding fitting 14 provided integrally with the housing 1B may be a housing-side temporary holding portion. In this case, the cover 2 can be temporarily held in the case 1B by placing the cover-side temporary holding portion 219 provided in the cover 2 on the case-side temporary holding portion 14 provided in the case 1B.

(4.3) modification 3

In the above embodiment, the first rotation shaft 212 is provided in the cover main body 21, and the first bearing 221 is provided in the first opening/closing cover 22. In contrast, as shown in fig. 13, the first rotation shaft 225 may be provided on the first opening/closing cover 22C, and the first bearing 244 may be provided on the cover main body 21C.

Further, one of the first rotation shaft and the first bearing may be provided in the first opening/closing cover 22C, and the other of the first rotation shaft and the first bearing may be provided in the case 1. In this case, the case 1 is a specific member and a first member, and the first opening/closing cover 22C is a second member.

(4.4) modification 4

In the above embodiment, the second rotation shaft 218 is provided in the cover main body 21, and the second bearing 231 is provided in the second opening/closing cover 23. In contrast, as shown in fig. 14, the second rotation shaft 232 may be provided on the second opening/closing cover 23D, and the second bearing 245 may be provided on the cover main body 21D.

Further, one of the second rotation shaft and the second bearing may be provided in the second opening/closing cover 23D, and the other of the second rotation shaft and the second bearing may be provided in the case 1.

(4.5) modification 5

In the above embodiment, the first contact portion 222 is provided in the first opening/closing cover 22, and the second contact portion 213 is provided in the cover main body 21. In contrast, as shown in fig. 15, the first contact portion 246 may be provided in the cover main body 21E, and the second contact portion 226 may be provided in the first opening/closing cover 22E.

One of the first contact portion and the second contact portion may be provided in the first opening/closing cover 22E, and the other of the first contact portion and the second contact portion may be provided in the case 1.

(4.6) modification 6

In the above-described embodiment, the movement of the cover body 2 in the left-right direction is restricted by bringing the cover-side fixing portion 217 provided in the cover body 21 into contact with the coupling portion 33 of the attachment fitting 3 attached to the case 1. On the other hand, for example, the movement of the cover 2 may be restricted by the plurality of breakers 5 housed in the case 1. Specifically, the breakers 5 positioned at the right and left ends among the plurality of breakers 5 arranged in the left-right direction are brought into contact with the right and left opening edges of the exposure window 211 provided in the cover main body 21. This can restrict the movement of the cover 2 in the left-right direction.

(4.7) modification 7

In the above embodiment, the contact shaft 215 is provided in the cover main body 21 and the rib 223 is provided in the first opening/closing cover 22, but a rib may be provided in the cover main body 21 and a contact shaft may be provided in the first opening/closing cover 22. In this case, the first opening/closing cover 22 is a first member, and the cover main body 21 is a second member.

Further, a contact shaft may be provided on one of the case 1 and the first opening/closing cover 22, and a rib may be provided on the other of the case 1 and the first opening/closing cover 22. In this case, the case 1 is a specific member.

(4.8) other modifications

In the above-described embodiment, the case 1 is covered with one cover 2, but may have a double structure based on, for example, an inner cover formed of the cover 2 and an outer cover disposed outside the inner cover.

In the above-described embodiment, the cover 2 is screwed to the case 1, but the cover 2 may be fixed to the case 1 by a clamp or the like, for example.

The cover-side temporary holding portion 219, the case-side temporary holding portion 33, the housing space 9, the recess 2431, the first contact portion 222, and the second contact portion 213 described in the above embodiments may be omitted.

In the above-described embodiment, the first rotation shaft 212 and the first bearing 221 are formed of synthetic resin, but the first rotation shaft and the first bearing may be formed of metal, for example. In the above-described embodiment, the open portion 2211 is provided at the rear end portion of the first bearing 221, but the open portion is not limited to the rear end portion of the first bearing 221 as long as it is formed at a part in the rotation direction of the first bearing 221.

In the above-described embodiment, the first rotation shaft 212 and the first bearing 221 constitute the opening/closing structure of the first opening/closing cover 22, but the opening/closing structure of the first opening/closing cover 22 is not limited to the above-described structure, and may be a shaft structure including a ball joint, for example.

(conclusion)

As described above, the distribution board (10) of the first aspect includes the box (1) and the cover (2). The case (1) has an opening (110) on one surface (front surface) and houses the breaker (5). The cover (2) is attached to the case (1) so as to close the opening (110). The cover body (2) includes a cover main body (21) and an opening/closing cover (22). The cover main body (21) has an exposure window (211) for exposing the breaker (5) when the cover main body is mounted on the box body (1). The opening/closing cover (22) is held by a specific member (for example, the cover body (21)) constituted by one of the case (1) and the cover body (21), and is rotatable between a closed position covering the exposure window (211) and an open position exposing the exposure window (211). The opening/closing cover (22) has a rotation shaft (212) and one of bearings (221) that can rotate around the rotation shaft (212) while holding the rotation shaft (212). The specific member has the other of the rotating shaft (212) and the bearing (221). The bearing (221) is provided with an opening (2211) at a part in the rotation direction. The rotation shaft (212) is held by the bearing (221) in a state where the bearing (221) is fitted from the opening portion (2211) of the bearing (221).

According to this mode, the opening and closing mechanism for opening and closing the cover (22) can be realized while reducing the number of components by the rotating shaft (212) and the bearing (221).

In the distribution board (10) of the second aspect, in the first aspect, the opening/closing cover (22) has a bearing (221).

According to this mode, the opening and closing mechanism for opening and closing the cover (22) can be realized while reducing the number of components.

In the distribution board (10) of the third aspect, in the second aspect, the opening/closing cover (22) has a plurality of bearings (221). The plurality of bearings (221) are located at both ends of the opening/closing cover (22) in a direction parallel to the rotating shaft (212).

This configuration has the advantage that the opening and closing operation of the opening and closing cover (22) is stable.

In the distribution board (10) of the fourth aspect, in any one of the first to third aspects, a first member (for example, the cover main body 21) configured by one of the specific member and the opening/closing cover (22) has a contact piece (214). When the opening/closing cover (22) rotates, the contact piece (214) is in contact with a second member (for example, the opening/closing cover (22)) composed of the other of the specific member and the opening/closing cover (22).

According to this mode, when the rotating cover (22) rotates, the contact piece (214) provided on the first member is brought into contact with the second member, and the deflection of the second member can be suppressed.

In the distribution board (10) of the fifth aspect, in the fourth aspect, the contact piece (214) is located at the center portion of the first member (for example, the cover main body 21) in the direction parallel to the rotation shaft (212).

According to this aspect, flexure occurring in the central portion of the second member can be suppressed.

In the power distribution board (10) of the sixth aspect, in any one of the first to fifth aspects, a first member (for example, the cover main body 21) configured by one of the specific member and the opening/closing cover (22) has a contact shaft (215). A second member (for example, the opening/closing cover 22) composed of the other of the specific member and the opening/closing cover 22 has a rib 223 which rotates around the contact shaft 215 along the contact shaft 215 when the opening/closing cover 22 rotates.

According to the mode, even if the second component is warped, the opening and closing cover (22) can be smoothly rotated by the contact of the rib (223) and the contact shaft (215).

In the power distribution board (10) of the seventh aspect, in the sixth aspect, the rib (223) is located at the center portion of the second member (for example, the opening/closing cover 22) in the direction parallel to the rotation shaft (212).

According to the mode, even if the central part of the second component is warped, the rib (223) contacts with the contact shaft (215) to enable the opening and closing cover (22) to rotate smoothly.

In the power distribution board (10) of the eighth aspect, in any one of the first to seventh aspects, the restricting walls (242, 243) that restrict the movement of the bearing (221) in the direction parallel to the rotating shaft (212) are provided at both end portions of the rotating shaft (212) in the direction parallel to the rotating shaft (212).

According to this mode, the bearing (221) can be restricted from moving in a direction parallel to the rotation shaft (212).

A distribution board (10) according to a ninth aspect is provided with a breaker (5) in any one of the first to eighth aspects.

The cover (2) according to the tenth aspect is used for the power distribution board (10) according to any one of the first to ninth aspects. In other words, the cover (2) of the tenth aspect is used for a power distribution board (10) provided with a box (1) and the cover (2). The case (1) has an opening (110) on one surface (front surface) and houses the breaker (5). The cover (2) is attached to the case (1) so as to close the opening (110). The cover body (2) includes a cover main body (21) and an opening/closing cover (22). The cover main body (21) has an exposure window (211) for exposing the breaker (5) when the cover main body is mounted on the box body (1). The opening/closing cover (22) is held by a specific member (for example, the cover body (21)) constituted by one of the case (1) and the cover body (21), and is rotatable between a closed position covering the exposure window (211) and an open position exposing the exposure window (211). The opening/closing cover (22) has a rotation shaft (212) and one of bearings (221) that can rotate around the rotation shaft (212) while holding the rotation shaft (212). The specific member has the other of the rotating shaft (212) and the bearing (221). The bearing (221) is provided with an opening (2211) at a part in the rotation direction. The rotation shaft (212) is held by the bearing (221) in a state where the bearing (221) is fitted from the opening portion (2211) of the bearing (221).

According to this aspect, a cover body (2) that can realize an opening/closing mechanism for opening/closing the cover (22) while reducing the number of components can be provided.

The configurations of the second to ninth aspects are not essential to the power distribution board (10), and can be omitted as appropriate.

Claims

1. A distribution board is characterized by comprising:

a case having an opening on one surface and housing a circuit breaker; and

a cover body attached to the case body so as to close the opening,

the cover body includes:

a cover main body having an exposure window for exposing the circuit breaker in a state of being mounted on the box body; and

an opening/closing cover which is held by a specific member constituted by one of the case and the cover main body and is rotatable between a closed position for covering the exposure window and an open position for exposing the exposure window,

the shutter has one of a rotation shaft and a bearing capable of rotating around the rotation shaft while holding the rotation shaft,

the specific member has the other of the rotating shaft and the bearing,

a part of the bearing in the rotational direction is provided with an open portion,

the rotation shaft is held by the bearing in a state of being fitted into the bearing from the open portion of the bearing.

2. The electrical distribution board of claim 1,

the opening/closing cover has the bearing.

3. The electrical distribution board of claim 2,

the shutter has a plurality of the bearings,

the plurality of bearings are located at both ends of the opening/closing cover in a direction parallel to the rotation axis.

4. The electrical distribution board of any of claims 1-3,

the first member formed of one of the specific member and the opening/closing cover has a contact piece which comes into contact with the second member formed of the other of the specific member and the opening/closing cover when the opening/closing cover is rotated.

5. The electrical distribution board of claim 4,

the contact piece is located at a central portion of the first member in a direction parallel to the rotation axis.

6. The electrical distribution board of any of claims 1-5,

a first member formed of one of the specific member and the opening/closing cover has a contact shaft,

the second member, which is formed by the other of the specific member and the opening/closing cover, has a rib that rotates around the contact shaft along the contact shaft when the opening/closing cover rotates.

7. The electrical distribution board of claim 6,

the rib is located at a central portion of the second member in a direction parallel to the rotation axis.

8. The electrical distribution board of any of claims 1-7,

the rotation shaft has a restriction wall provided at both ends thereof in a direction parallel to the rotation shaft, the restriction wall restricting the bearing from moving in the direction parallel to the rotation shaft.

9. The electrical distribution board of any of claims 1-8,

the circuit breaker is also provided.

10. A cover body is characterized in that a cover body is provided,

use in an electrical distribution panel according to any of claims 1 to 9.