TWI436536B - Electric device - Google Patents

Description

Electrical Equipment

The present invention relates to an electrical device that can be used, for example, in a distribution board.

In the past, for example, an electric device housed in a switchboard has been known as a dimming terminal of a remote monitoring control system (for example, refer to Patent Document 1).

As shown in FIG. 10(A) and FIG. 10(B), the electric device 100 disclosed in Patent Document 1 includes a box-shaped body 103 which is a body 101 and a cover (cover). ) 102 is combined to form. In the device body 103, a power supply terminal portion 104 including a plurality of screw terminals and connected to a commercial power source, a load terminal portion 105 to which an electric wire from a lighting load is connected, and a signal terminal portion 106 to which a signal line is connected are provided. The above signal line is used to transmit a signal such as a dimming signal.

The power supply terminal portion 104 and the load terminal portion 105 are provided in the terminal recess portion 107 and are connected by screws, and the terminal recess portion 107 is provided on the front surface of the outer cover 102. A terminal cover 108 is provided in the terminal recess 107, and the terminal cover 108 covers the upper portion of the terminal recess 107 and a part of the front portion. Furthermore, the terminal cover 108 is detachably attached to the outer cover 102 by a fixing bolt 109.

Thereby, the finger of the operator is prevented from entering the terminal recess 107.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-266487 (Fig. 1)

However, in the electric device 100 disclosed in Patent Document 1, when the power supply terminal portion 104 and the load terminal portion 105 are connected, the terminal cover 108 that is separate from the outer cover 102 must be removed. At this time, there is a problem that the fixing bolt 109 must be removed, and then the terminal cover 108 is removed and the work is performed, which is cumbersome.

Also, the removed terminal cover 108 or the place where the fixing bolt 109 is placed must be considered, and additional attention is required. Moreover, when insufficient attention is paid, the terminal cover 108 or the fixing bolt 109 may be lost.

The present invention has been made in view of the above aspects, and an object of the present invention is to provide an electric device that can easily open and close a cover member that covers a terminal portion without paying attention to a place where a cover member is placed, and the cover member is not lost. Hey.

According to an embodiment of the present invention, an electric device includes: a box-shaped casing that houses a circuit that receives a supply of power from the outside to operate; and a recess that is adjacent to each other in the casing The first surface and the second surface are provided so that the corner portions along both end portions of the ridge line between the first surface and the second surface are retained; the plurality of terminal portions The cover member is electrically connected to the circuit, and can be screwed by a screw terminal; and the cover member covers the recess and has a substantially L-shaped cross section, and the cover member can be parallel to the ridge line. The rotating shaft is centered and opened and closed with respect to the above-described housing.

The cover member may be detachably attached to the frame.

Moreover, the electrical device may further include: a tubular portion disposed on the cover structure The back surface of the member extends to the bottom of the concave portion in a state where the concave portion is covered, and the fixing bolt is inserted into the tubular portion from the front surface side of the cover member, and the screw portion is screwed to the concave portion. bottom.

Preferably, a screwing portion may be provided on an inner surface of the tubular portion, the screwing portion being screwed and passed by the threaded portion of the fixing bolt, and between the screwing portion and the head of the fixing bolt A compression spring is fitted.

Further, the electric device may include: a first engagement portion provided in an end edge of the cover member in a direction parallel to the rotation axis; and a second engagement portion provided on an inner surface of the concave portion And the cover member is engaged with the first engaging portion in a state in which the cover member covers the recessed portion.

According to the above configuration, it is possible to provide an electric device in which a recessed portion including a plurality of terminal portions is provided over the first surface and the second surface adjacent to each other in the housing, and the recessed portion is covered and the cross section is substantially Since the L-shaped cover member is provided so as to be openable and closable with respect to the frame around the rotation axis, the cover member that covers the terminal portion can be easily opened and closed, and work efficiency can be improved. Further, since the cover member can be removed from the frame body, there is an effect that the cover member does not have to be lost without paying attention to the place where the cover member is placed.

The objects and features of the present invention will become apparent from the following description of the preferred embodiments of the invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings which form a part of this specification. Throughout the drawings, the same or similar components are denoted by the same reference numerals, and the repeated description of the same or similar parts is omitted.

The electric device 10 according to the embodiment of the present invention shown in Fig. 1 can be used, for example, as a dimming terminator of a remote monitoring control system, and the remote monitoring control system is housed in a switchboard (not shown).

As shown in FIG. 1 and FIG. 2, the electric device 10 includes, for example, a rectangular box-shaped housing 11 in which a rectangular box-shaped upper housing 20 and a lower housing 30 are combined, and the rectangular box-shaped upper housing 20 is provided. It is formed of an insulating synthetic resin material and has an opening formed downward, and the lower frame body 30 is formed of a material having high thermal conductivity such as an aluminum die cast and has an opening formed upward. A circuit is housed inside the casing 11, and the circuit is operated by receiving supply from an external power source.

In the following description, the left front side in FIG. 1 is defined as the front side, and the right rear side is defined as the rear side.

A plurality of engagement holes 32 are provided on the front surface 31 and the rear surface (not shown) of the lower frame 30.

Therefore, when the electric device 10 is housed and fixed to the inside of the switchboard (not shown), the mount provided on the switchboard or the connection board (not shown) is inserted into the electric device 10, whereby the electric device 10 can be easily To perform the mounting, the above-described connecting plates are provided to connect the frames 11 to each other.

A recessed portion 25 (see FIG. 3) is provided in the upper housing 20, and the recessed portion 25 is provided over the first surface 21, which is the first surface adjacent to each other, and the front surface 22, which is the second surface. The portion 24 is provided in such a manner that the side front portion 24 is a corner portion along both end portions of the ridge line 23 between the upper surface 21 and the front surface 22.

Further, on the inner surface 241 of the side front portion 24, a rib 242 is provided along the vertical direction, and the locking hook 243 is provided to protrude from the inner side of the recess 25 at the upper end of the rib 242, and the locking hook 243 is A second engaging portion for temporarily fixing the cover member 40 to be described later.

As shown in FIG. 8, the locking hook 243 has a stopper surface 244 on the lower surface of the front end, and the stopper surface 244 protrudes horizontally toward the inner side of the concave portion 25, and the locking hook 243 has a front end lowering surface on the front end surface. The inclined surface 245.

As shown in FIG. 2, the concave portion 25 is formed in a L shape from the concave portion (front concave portion 251) deep from the front side and the shallow concave portion (rear concave portion 252) on the rear side, and the bottom portions 251A, 252A of the two concave portions 251, 252 are provided. At different heights. A partition plate 261 is provided at two recesses 251 and 252 at a predetermined interval along the width direction, and a plurality of terminal portions 262 are respectively provided to form the joint portion 26.

Here, as shown in FIG. 3, eight terminal portions 262 are provided in each of the concave portions 251 and 252, and a total of sixteen terminal portions 262 are provided. For example, the terminal 263 is provided in the eight terminal portions 262 and used. The terminal 263 includes a terminal plate 264 connected to a circuit (not shown) housed inside the casing 11 and a screw terminal 265 screwed to a screw hole provided in the terminal block 264.

Further, a screw hole 28 for fixing the cover member 40 to be described later is provided in the two terminal portions 262 of the terminal portion 262 (see FIG. 3).

Therefore, the wire is wound around the screw terminal 265, and then the screw terminal 265 is fastened, whereby an electric wire (not shown) connected to the signal line or the like of the terminal 262 can be electrically and mechanically connected to the terminal. 262. Alternatively, a through hole that can be inserted through the screw terminal 265 may be provided in advance in a crimp terminal (not shown) attached to the tip end of the electric wire, and the screw terminal 265 may be inserted into the through hole, and then the screw terminal 265 may be tightened. Solid, thus making connections.

Further, as shown in FIG. 3, a connection portion 27 connected to a commercial power source is provided at a rear end portion of the upper surface 21 of the upper casing 20. The connecting portion 27 includes two terminals 271 and 272.

Furthermore, the configurations of the terminals 271, 272 are the same as those of the above-described terminal 263.

As shown in FIG. 2, the cover member 40 which covers the recessed part 25 of the upper frame 20 is provided so that it can open and close with respect to the rotation axis L1, and can be removed.

As shown in FIG. 4, the cover member 40 is provided in a stepped shape (L shape) from the front portion 41 corresponding to the front recessed portion 251 of the upper casing 20 and the rear portion 42 corresponding to the rear recessed portion 252. A rear end portion of the rear portion 42 is provided with a shaft protrusion 43 for supporting the cover member 40 so that the cover member 40 can be opened and closed around the rotation axis L1.

As shown in FIG. 6(A), the shaft projection 43 is a substantially semicircular member that protrudes outward from the side surface of the rear portion 42 of the cover member 40. Further, as shown in FIG. 6(B), the shaft projection 43 is provided on the rotation shaft L1 and fitted to the shaft recess 212, and the rotation shaft L1 is provided at the front end of the upper surface 21 of the upper housing 20, and the shaft recess 212 is provided. The front end of the bearing portion 211 (see FIG. 1) is recessed, and the bearing portion 211 is provided at the left and right end portions at the front end of the upper surface 21.

Therefore, the shaft protrusion 43 is fitted to the shaft recess 212, whereby the cover member 40 is supported in an openable and closable manner. Further, since the hemispherical shaft projections 43 are separated from the shaft recesses 212 by the action of the predetermined external force, the cover member 40 can be removed from the casing 11.

As shown in FIG. 4, a circular opening portion 44 is provided in the cover member 40, and a screwdriver can be inserted to screw the screw terminal 265 of the terminal portion 262, and the circular opening portion 44 is closed by the cover member 40. Next, it corresponds to each terminal part 262. Each of the opening portions 44 is partitioned by a plurality of ribs 404 provided on the outer surface 402 of the cover member 40, and the plurality of ribs 404 reinforce the cover member 40. Further, a rib 405 is also provided on the front surface 403 of the cover member 40, and the rib 405 reinforces the cover member 40.

The fixing bolts 45 are inserted through the two opening portions 441 and 441 provided in the rear portion 42 of the opening portion 44, and then the fixing bolts 45 are fastened to the screw holes 28 provided in the bottom portion 252A of the recess portion 25. The cover member 40 is fixed.

Furthermore, the fixing bolt 45 includes a head portion 451 and a threaded portion 452, and has a shaft portion 453 between the head portion 451 and the thread portion 452, the diameter of the shaft portion 453 being smaller than the root diameter of the thread portion 452.

As shown in FIG. 5, a cylindrical portion 46 is provided on the inner surface 401 of the cover member 40 so as to be continuous with the opening portion 441. The tubular portion 46 has a length that causes the front end 463 to abut against the bottom portion 252A of the concave portion 25 of the upper casing 20 when the cover member 40 is closed.

As shown in FIG. 7, the tubular portion 46 includes a large diameter portion 461 on the upper side and a small diameter portion 462 on the lower side. The large diameter portion 461 has an inner diameter through which the head portion 451 of the fixing bolt 45 can pass, and the small diameter portion 462 has an inner diameter through which the screw portion 452 and the shaft portion 453 can pass.

A partition wall 47 is provided at a boundary between the large diameter portion 461 and the small diameter portion 462, and a screw portion 471 to which the screw portion 452 of the fixing bolt 45 is screwed is provided. Further, the compression spring 48 is interposed in the fixing bolt 45, and the compression spring 48 is attached to the upper surface of the partition wall 47 of the tubular portion 46 and the head of the fixing bolt 45 in a state where the fixing bolt 45 is attached to the tubular portion 46. Between the lower surfaces of the 451.

Further, the fixing bolt 45 is attached to the opening 441 of the cover member 40 in advance. In other words, it is preferable that the screw portion 452 of the fixing bolt 45 has passed through the screw portion 471 of the partition wall 47 of the tubular portion 46 in advance.

In the above state, the fixing bolt 45 attached to the tubular portion 46 is biased upward by the compression spring 48, but the screw portion 452 of the fixing bolt 45 passes downward through the screwing portion 471 of the partition wall 47. The fixing bolt 45 does not fall off from the tubular portion 46. Thereby, the fixing work of the cover member 40 becomes easy.

As shown in FIG. 4, an engagement recessed portion 49 is provided at both end portions of the cover member 40, and the engagement recessed portion 49 is a first engagement portion that is engaged with the locking hook 243 provided in the recessed portion 25. As shown in FIG. 9, the engaging recessed portion 49 includes a rectangular notch 491 and an engaging portion 492 inside the notch 491.

Therefore, when the locking hook 243 is engaged with the engaging recess 49, the locking hook 243 is engaged with the engaging portion 492 and is received in the notch 491, so that the locking hook 243 does not protrude to the outside.

Next, a connection operation when the electric wire is connected to the electric device 10 will be described.

The cover member 40 of the electrical device 10 is opened. Alternatively, the cover member 40 of the electrical device 10 is opened and removed. The distal end of the electric wire is connected to the terminal portion 262 at a predetermined position, and the screw terminal 265 is fastened to electrically and mechanically connect the electric wire.

Next, the cover member 40 is closed. Alternatively, when the cover member 40 has been removed, the cover member 40 is closed after the shaft projection 43 provided on the cover member 40 is fitted to the shaft recess 212, and the shaft recess 212 is provided in the recess of the upper frame 20. 25. Thereby, the engagement recessed part 49 of the cover member 40 is locked by the locking hook 243 provided in the recessed part 25 of the upper frame body 20, and the cover member 40 is temporarily fixed. At this time, since the inclined surface 245 is provided on the upper surface of the locking hook 243, the engaging recessed portion 49 is easily locked by the locking hook 243.

Then, the fixing bolt 45 attached to the cylindrical portion 46 of the cover member 40 is screwed to the screw hole 28 of the bottom portion 252A of the recessed portion 25, thereby completing the mounting.

According to the electric device 10 of the embodiment of the present invention described above, in the casing 11, the concave portion 25 is provided over the upper surface 21 and the front surface 22 adjacent to each other, and the plurality of terminal portions 262 are provided in the recess portion 25. The terminal portion 262 is electrically connected to the circuit and can be screwed by the screw terminal 265.

The recessed portion 25 is provided so as to retain the side surface front portion 24 along both end portions of the ridge line 23 of the upper surface 21 and the front surface 22, and the cover member 40 which covers the recessed portion 25 and has a substantially L-shaped cross section is The cover member 40 that covers the terminal portion 262 can be easily opened and closed around the rotation axis L1 parallel to the ridge line 23, and the work efficiency can be improved.

Further, the cover member 40 may not be removed from the casing 11, and therefore, it is not necessary to pay attention to the place where the cover member 40 is placed, and the cover member 40 is not lost.

Further, since the lid member 40 can be opened and closed with respect to the casing 11, and can be detachably attached, for example, when the lid member 40 interferes with the work, the lid member 40 can be removed, and workability is improved. Moreover, the assemblability of the electric device 10 is also improved.

Further, the tubular portion 46 extending to the bottom portion 252A of the recessed portion 25 is provided on the inner surface of the cover member 40. Therefore, when the cover member 40 is closed, the tubular portion 46 abuts and is supported by the bottom portion 252A. Therefore, even if the fixing bolt 45 is firmly tightened, the deflection of the cover member 40 can be prevented, and the fixing bolt 45 is inserted into the concave portion 25 and screwed to the bottom portion 252A of the concave portion 25.

Further, since the screw portion 471 to which the screw portion 452 of the fixing bolt 45 is screwed and passed is provided on the inner surface of the tubular portion 46, the fixing bolt 45 does not come from the state in which the screw portion 471 has passed. The tubular portion 46 is detached.

Further, a compression spring 48 is interposed between the screwing portion 471 on the inner surface of the tubular portion 46 and the head portion 451 of the fixing bolt 45. Therefore, the fixing bolt 45 is biased upward, and the fixing bolt 45 does not shake. .

Further, the engagement recessed portion 49 is provided on the inner surface of the recessed portion 25, and the engagement recessed portion 49 is engaged with the locking hook 243 in a state where the cover member 40 covers the recessed portion 25, so that the cover member 40 is closed. The locking hook 243 can temporarily fix the cover member 40, and the workability can be improved. The engagement recess 49 is provided in an end edge of the cover member 40 in a direction parallel to the rotation axis L1.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto, and various modifications and changes can be made without departing from the spirit and scope of the invention.

10,100. . . Electrical Equipment

11. . . framework

20. . . Upper frame

twenty one. . . Upper surface

22, 31, 403. . . Front surface

twenty three. . . Ridge line

twenty four. . . Side front

25. . . Concave

26, 27. . . Connection

28. . . Screw hole

30. . . Lower frame

32. . . Engagement hole

40. . . Cover member

41. . . Front section

42. . . rear

43. . . Axis protrusion

44, 441. . . Opening

45, 109. . . Fixing bolts

46. . . Tube

47. . . Partition wall

48. . . compressed spring

49. . . Engagement recess

101. . . main body

102. . . Cover

103. . . Body

104. . . Terminal for power supply

105. . . Terminal for load

106. . . Signal terminal

107. . . Terminal recess

108. . . Terminal cover

211. . . Bearing department

212. . . Shaft recess

241, 401. . . The inner surface

242, 404, 405. . . Rib

243. . . Catch hook

244. . . Stop face

245. . . Inclined surface

251. . . Front recess/recess

251A, 252A. . . bottom

252. . . Rear recess/recess

261. . . Spacer

262. . . Terminal part

263, 271, 272. . . Terminal

264. . . Terminal board

265. . . Screw terminal

402. . . The outer surface

451. . . head

452. . . Thread part

453. . . Shaft

461. . . Large diameter section

462. . . Small diameter section

463‧‧‧ front end

471‧‧‧ screwing department

491‧‧ ‧ gap

492‧‧‧Clock Department

B‧‧‧ directions

L1‧‧‧Rotary axis

Sections VI, VIII, IX‧‧‧

VII-VII‧‧‧Location

Fig. 1 is an overall perspective view of an electric device according to an embodiment of the present invention.

FIG. 2 is an overall perspective view showing a state in which the cover member is opened in the electric device according to the embodiment of the present invention.

3 is a plan view showing a state in which a cover member is removed from an electric device according to an embodiment of the present invention.

Fig. 4 is an exploded perspective view of the cover member as seen from the front side.

Fig. 5 is a perspective view of the cover member as seen from the back side.

Fig. 6(A) is an enlarged perspective view of a portion VI in Fig. 4, and Fig. 6(B) is a rear view seen from a B direction in Fig. 6(A).

Figure 7 is a cross-sectional view taken along the line VII-VII in Figure 5 .

Figure 8 is an enlarged perspective view of a portion VIII of Figure 2.

Figure 9 is an enlarged perspective view of a portion IX of Figure 4.

Fig. 10(A) is an overall perspective view of a prior electrical device, and Fig. 10(B) is a partially exploded perspective view.

10. . . Electrical Equipment

11. . . framework

20. . . Upper frame

twenty one. . . Upper surface

22, 31. . . Front surface

twenty three. . . Ridge line

twenty four. . . Side front

30. . . Lower frame

32. . . Engagement hole

40. . . Cover member

49. . . Engagement recess

211. . . Bearing department

243. . . Catch hook

Claims (5)

An electric device includes a box-shaped casing that houses a circuit that is operated by receiving supply from an external power source, and a recessed portion that is disposed over the first surface and the second surface adjacent to each other in the casing And providing a corner portion along both end portions of the ridge line between the first surface and the second surface to be retained; the plurality of terminal portions are provided in the concave portion and electrically connected to The circuit is screwed by a screw terminal; and the cover member covers the recess and has a substantially L-shaped cross section, and the cover member is centered on a rotation axis parallel to the ridge line with respect to the frame Open and close. The electrical device according to claim 1, wherein the cover member is freely detachable from the frame. The electrical device according to claim 1 or 2, further comprising: a tubular portion provided on an inner surface of the cover member, extending to a bottom portion of the concave portion in a state where the concave portion is covered; The fixing bolt is inserted into the tubular portion from the front surface side of the cover member, and the screw portion is screwed to the bottom portion of the recessed portion. The electric device according to claim 3, wherein a screwing portion is provided on an inner surface of the tubular portion, the screwing portion being screwed and passed by the threaded portion of the fixing bolt, and the screwing portion is A compression spring is interposed between the head of the fixing bolt and the head. The electric device according to claim 1 or 2, further comprising: a first engaging portion, an end edge provided in the cover member in a direction parallel to the rotation axis; and a second engagement The portion is provided on the inner surface of the concave portion, and is engaged with the first engaging portion in a state in which the cover member covers the concave portion.