Control board cabinet

Abstract

To provide a control board cabinet capable of saving space while securing good workability.SOLUTION: A control board cabinet 10 comprises: a rectangular parallelepiped housing 11; and a holding unit 2A holding each of a plurality of kinds of control apparatuses. The holding unit 2A includes: a first device holder 20; a first wiring holder 21 that is attached to a side wall part 19 so as to be aligned with the first device holder 20 in a vertical direction Z; a switch cover 3 that is rotatably provided to a circumference of rotational shafts δ1 and δ2 extended in a first direction D1, and is constructed so as to enable switching by rotation to a closed state where a back surface 3b is opposite the first wiring holder 21 and an open state where the back surface 3b is not opposite the first wiring holder 21; a second device holder 22 that is attached to a front surface 3a of the switch cover 3; and a second wiring holder 23 that is attached to the back surface 3b so as to be positioned between the first wiring holder 21 and the second device holder 22 when the switch cover 3 is in the closed state.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control panel cabinet that houses various control devices used to control facilities and the like. [Background technology]

[0002] Conventionally, there is known a control panel including various control devices for controlling equipment and a control panel cabinet that houses the control devices (see, for example, Patent Document 1). The control devices are generally attached to the inner surface of a side wall of the control panel cabinet via a DIN rail (see, for example, Patent Document 2) or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-216382 A [Patent Document 2] JP 2014-013860 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, with the increasing need to reduce the installation area of ​​a control panel, there is a demand to eliminate wasted space inside the control panel cabinet, i.e., to save space. One way to save space is to reduce the clearance between control devices, but this inevitably results in the control devices being crowded together, which leads to poor workability, for example, when inspecting a control device, the control device and the electric wires connected to the control device are hidden by other control devices and become difficult to see, or the other control devices block the worker's hands, which makes it necessary to remove the other control devices from the control panel cabinet. Therefore, there has been a problem in that it is difficult to save space while ensuring ease of inspection and other work, i.e., good workability.

[0005] The present invention has been made in consideration of the above, and has an object to provide a control panel cabinet that can save space while ensuring good workability. [Means for solving the problem]

[0006] In order to achieve the above object, the control panel cabinet according to the present invention is configured as follows: The control panel cabinet according to the present invention is a control panel cabinet including a rectangular parallelepiped housing that houses various control devices therein, and a holding unit that holds the various control devices on the inner surface of a side wall portion that constitutes one side wall of the housing. The holding unit includes a first device holder attached to the side wall portion and holding some of the various control devices lined up in a first direction, which is the width direction of the side wall portion; a first wiring holder attached to the side wall portion so as to be aligned in the vertical direction with the first device holder and holding electric wires connected to the control devices held by the first device holder along the first direction; an opening / closing cover that is rotatable about a rotation axis extending in the first direction and is configured to be openable and closable by rotation about the rotation axis into a closed state in which the back surface faces the first wiring holder and an open state in which the back surface does not face the first wiring holder; a second device holder attached to a surface opposite to the back surface of the opening / closing cover and holding another part of the various control devices lined up in the first direction; and a second wiring holder attached to the back surface of the opening / closing cover so as to be located between the first wiring holder and the second device holder when the opening / closing cover is in the closed state and holding electric wires connected to the control devices held by the second device holder along the first direction.

[0007] According to the above configuration, since the first device holder and the first wiring holder are attached to the side wall so as to be aligned in the vertical direction, some of the various control devices held by the first device holder and the electric wires held by the first wiring holder can be held aligned in the vertical direction on the inner surface side of the side wall. Also, since the second device holder and the second wiring holder are attached to the front and back sides, respectively, of the opening / closing cover, another part of the various control devices held by the second device holder and the electric wires held by the second wiring holder can be held by an opening / closing cover different from the side wall.

[0008] Furthermore, when the opening / closing cover, which is rotatably arranged around a rotation axis extending in a first direction, which is the width direction of the side wall portion, is in a closed state, the second wiring holder is positioned between the first wiring holder and the second equipment holder, so that when the opening / closing cover is in a closed state, the first wiring holder, the second wiring holder and the second equipment holder are arranged in a direction normal to the side wall portion (second direction); in other words, another portion of the electric wires and various control devices held by these are arranged in a direction normal to the side wall portion (second direction).

[0009] Fig. 24 is a schematic diagram showing a conventional example of a holding unit. If the first device holder 90, the first wiring holder 91, the second device holder 92, and the second wiring holder 93 are arranged vertically along the side wall portion 96 as in the conventional example shown in Fig. 24, a space α that cannot be used to accommodate a control device, that is, a wasted space, is generated inside (on the front side) of the housing 95 relative to the first wiring holder 91, the second device holder 92, and the second wiring holder 93. In contrast, by arranging as described above, the space on the front side of the first wiring holder can be effectively used as a storage space for the second device holder and the second wiring holder, so that the wasted space inside the control panel cabinet can be eliminated, that is, space can be saved.

[0010] By saving space as described above, the space occupied by the first equipment holder, the first wiring holder, the second equipment holder and the second wiring holder inside the control panel cabinet can be reduced in the vertical direction, making it possible to mount more control devices on the inner surface of the side wall of the control panel cabinet housing via a DIN rail or the like, and as a result, the installation area of ​​the control panel can be reduced.

[0011] Furthermore, by rotating the openable cover around the rotation axis, the openable cover changes from a closed state in which the back surface faces the first wiring holder to an open state in which the back surface does not face the first wiring holder, so that the electric wires held by the first wiring holder change from a state in which they are blocked on the front side by the openable cover to a state in which they are not blocked on the front side, that is, a state in which they are easily visible and reachable by an operator. Also, by changing the openable cover from a closed state to an open state, the electric wires held by the second wiring holder on the back surface of the openable cover change from a state in which they are hidden by the back surface of the openable cover to a state in which they are easily visible and reachable by an operator. As a result, when the openable cover is in the closed state, it is possible to work on the first wiring holder blocked by the openable cover and the second wiring holder hidden by the back surface of the openable cover without removing other control devices from the control panel cabinet, and therefore good workability can be ensured while achieving the above-mentioned arrangement that contributes to space saving. Such a control panel cabinet can save space while ensuring good operability.

[0012] In the above control panel cabinet, the holding unit further includes one or more first arms having a base end portion which is one end portion attached to the side wall portion above the first wiring holder and extending in a second direction which is a normal direction of the side wall portion, and one or more second arms having a base end portion which is one end portion attached to the side wall portion below the first wiring holder and extending in the second direction, the first arms including a first engaged portion at a tip end portion which is the other end portion with which the open-close cover can be engaged, and the second arms including a second engaged portion at a tip end portion which is the other end portion with which the open-close cover can be engaged. The opening / closing cover may include a first engaging portion engageable with the first engaged portion and a second engaging portion engageable with the second engaged portion, and may be configured to be opened and closed in a first opening / closing mode in which the cover rotates around the first engaging portion when the first engaging portion is engaged with the first engaged portion and the second engaging portion is not engaged with the second engaged portion, while being open and closed in a second opening / closing mode in which the cover rotates around the second engaging portion when the second engaging portion is engaged with the second engaged portion and the first engaging portion is not engaged with the first engaged portion.

[0013] According to this configuration, the opening / closing cover can be opened and closed in a first opening / closing mode in which it rotates around a first engagement portion engaged with the tip of a first arm attached to the side wall portion above the first wiring holder, and in a second opening / closing mode in which it rotates around a second engagement portion engaged with the tip of a second arm attached to the side wall portion below the first wiring holder.As a result, the opening / closing cover can be opened from both the bottom and the top to make it easier for an operator to work, thereby improving workability.

[0014] In the above control panel cabinet, the first arm includes a first arm side wall portion intersecting the first direction, the first engaged portion is configured with a first hole penetrating the first arm side wall portion in the first direction, the first engaging portion is provided to be insertable into the first hole, and is configured to be inserted into the first hole to be engaged with the first engaged portion, and to be removed from the first hole to be disengaged from the first engaged portion, the second arm includes a second arm side wall portion intersecting the first direction, and the second engaged portion is configured with a first hole penetrating the first arm side wall portion in the first direction, the first engaging portion is provided to be insertable into the first hole, and is configured to be inserted into the first hole to be engaged with the first engaged portion, and to be disengaged from the first engaged portion by being removed from the first hole, The arm side wall portion may be formed with a second hole penetrating the first direction, and the second engagement portion may be configured to be insertable into the second hole and to be engaged with the second engaged portion when inserted into the second hole, and to be disengaged from the second engaged portion when removed from the second hole, such that when the second engagement portion is removed from the second hole, the first engagement portion is inserted into the first hole, and when the first engagement portion is removed from the first hole, the second engagement portion is inserted into the second hole.

[0015] With this configuration, the first engaging portion and the first engaged portion can be easily engaged by the first engaged portion constituted by a first hole penetrating the first arm side wall portion in the first direction and the first engaging portion provided so as to be insertable into the first hole, and similarly, the second engaging portion and the second engaged portion can be easily engaged by the second engaged portion constituted by a second hole penetrating the second arm side wall portion in the first direction and the second engaging portion provided so as to be insertable into the second hole.

[0016] Furthermore, according to the above configuration, the positional relationship between these components (the first engaging portion, the second engaging portion, the first engaged portion, and the second engaged portion) is set so that when the second engaging portion is out of the second hole, the first engaging portion is inserted into the first hole, while when the first engaging portion is out of the first hole, the second engaging portion is inserted into the second hole. This makes it possible to avoid a state in which the first engaging portion is not engaged with the first engaged portion and the second engaging portion is not engaged with the second engaged portion, and therefore makes it possible to prevent the opening / closing cover from falling off the first arm and the second arm.

[0017] In the control panel cabinet, the first arm and the second arm may be formed in the same shape, which allows components to be standardized and therefore reduces the manufacturing cost of the holding unit.

[0018] In the above control panel cabinet, the first arm may include a first rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the first opening / closing mode. This allows an operator to work with both hands without holding the opening / closing cover while the opening / closing cover is in the open state, thereby improving workability.

[0019] In the above control panel cabinet, the first arm may include a first rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the first opening / closing mode, and the first rotation restricting portion may be configured as a rotation restricting groove that is a groove recessed from the inner circumferential surface of the first hole. In this manner, the first rotation restricting portion can be easily realized by employing a rotation restricting groove that is simply recessed from the inner circumferential surface of the first hole.

[0020] In the above control panel cabinet, the first arm may include a second rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the first opening / closing mode with the housing laid down so that the side wall portion is on the lower side. This allows a worker to work with both hands without holding the opening / closing cover in the open state even when the housing is laid down during assembly of a control panel, thereby improving workability.

[0021] In the above control panel cabinet, the second arm may include a third rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the second opening / closing mode. This allows an operator to work with both hands without holding the opening / closing cover while the opening / closing cover is in the open state, thereby improving workability.

[0022] In the above control panel cabinet, the second arm may include a third rotation restricting portion that restricts further rotation of the openable cover that has been opened in the second open / close mode, and the third rotation restricting portion may be configured as a rotation restricting protrusion that is a protrusion protruding from the inner circumferential surface of the second hole. In this manner, the third rotation restricting portion can be easily realized by employing a rotation restricting protrusion that simply protrudes from the inner circumferential surface of the second hole.

[0023] In the above control panel cabinet, the second arm may include a fourth rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the second opening / closing mode with the housing laid down so that the side wall portion is on the lower side. This allows a worker to work with both hands without holding the opening / closing cover in the open state even when the housing is laid down during assembly of a control panel, thereby improving workability.

[0024] In the above control panel cabinet, the holding unit may further include a holder mounting rail configured as a DIN rail extending in the first direction for mounting the second wiring holder to the rear surface of the openable cover, and the second device holder may be configured as a DIN rail extending in the first direction. This makes it possible to easily mount the second wiring holder to the rear surface of the openable cover and to easily realize the second device holder.

[0025] In the control panel cabinet, the holder mounting rail and the DIN rail constituting the second device holder may be molded integrally with the openable cover, thereby reducing the number of parts of the holding unit and therefore the manufacturing cost of the holding unit.

[0026] In the above-mentioned control panel cabinet, the side wall portion may include a detachable portion configured to be detachable from other parts of the housing, and the holding unit may be attached to the detachable portion. By attaching the holding unit to the detachable portion in this manner, it becomes possible to detach the holding unit together with the detachable portion from other parts of the housing. This makes it possible to perform work in a state where the holding unit and the detachable portion are removed from other parts of the housing (for example, in a state where the holding unit is laid flat on a workbench with the detachable portion facing downwards) during assembly or maintenance of the control panel, thereby improving workability.

[0027] In the above-mentioned control panel cabinet, the side wall portion may include an outer plate and an inner plate provided on the inner surface side of the outer plate and configured to be detachable from other parts of the side wall portion, and the holding unit may be attached to the inner plate. By attaching the holding unit to the inner plate in this manner, it becomes possible to detach the holding unit together with the inner plate from other parts of the side wall portion. This makes it possible to perform work such as assembling or maintaining the control panel in a state where the holding unit is detached from other parts of the side wall portion together with the inner plate (for example, in a state where the holding unit is placed flat on a workbench with the inner plate facing downwards), thereby improving workability. Effect of the Invention

[0028] As described above, according to the present invention, it is possible to save space while ensuring good workability. [Brief description of the drawings]

[0029] [Figure 1] FIG. 2 is a schematic perspective view showing the control panel cabinet in the first embodiment. [Diagram 2] 2 is a schematic front view of the holding unit according to the first embodiment, as viewed from the front. FIG. [Diagram 3] 3 is a schematic side view of the holding unit according to the first embodiment, seen from the left. FIG. [Figure 4] 3 is a schematic diagram of a first wiring holder and its periphery as viewed from above in the first embodiment. FIG. [Diagram 5] 3 is a schematic diagram of a first wiring holder and its periphery as viewed from below in the first embodiment. FIG. [Figure 6A] 2 is a schematic diagram of the opening / closing cover in the first embodiment as viewed in the longitudinal direction. FIG. [Figure 6B] 2 is a schematic diagram of the opening / closing cover in the first embodiment, as viewed from one end in the short side direction. FIG. [Figure 6C] 2 is a schematic diagram of the opening / closing cover in the first embodiment, as viewed from the front side. FIG. [Figure 6D]4 is a schematic view of the opening / closing cover in the first embodiment as viewed from the other end side in the short side direction. FIG. [Figure 7A] 11 is a schematic diagram showing an example in which the opening / closing cover is turned counterclockwise in the figure to be in an open state. FIG. [Figure 7B] 11 is a schematic diagram showing an example in which the opening / closing cover is turned clockwise in the figure to an open state. FIG. [Figure 8A] 3 is a schematic side view of a first arm in the first embodiment as viewed from the left. FIG. [Figure 8B] 2 is a schematic top view of a first arm according to the first embodiment, as viewed from above. FIG. [Figure 8C] 3 is a schematic side view of the first arm in the first embodiment as viewed from the right. FIG. [Figure 8D] 2 is a schematic front view of a first arm in the first embodiment as viewed from the front. FIG. [Figure 9A] 4 is a schematic side view of the second arm in the first embodiment as viewed from the left. FIG. [Figure 9B] 3 is a schematic top view of a second arm according to the first embodiment, as viewed from above. FIG. [Figure 9C] 4 is a schematic side view of the second arm in the first embodiment as viewed from the right. FIG. [Figure 9D] 4 is a schematic front view of a second arm in the first embodiment as viewed from the front. FIG. [Figure 10A] 11 is a schematic view showing a part of the opening / closing cover that can be opened and closed in a first opening / closing mode, as viewed from above. FIG. [Figure 10B] 11 is a schematic view showing a part of the opening / closing cover that can be opened and closed in a first opening / closing mode, as viewed from below. FIG. [Figure 11] 11 is a schematic diagram showing the opening / closing cover in an open state in a first opening / closing mode. FIG. [Figure 12] 11 is a schematic diagram showing a state in which the opening / closing cover, which has been opened in the first opening / closing mode, is restricted from further rotation. FIG. [Figure 13] 11 is a schematic diagram showing the opening / closing cover in the open state in the first opening / closing mode with the housing laid down. FIG. [Figure 14A] 13 is a schematic view showing a part of the opening / closing cover that can be opened and closed in the second opening / closing mode, as viewed from above. FIG. [Figure 14B] 13 is a schematic diagram showing a part of the opening / closing cover that can be opened and closed in the second opening / closing mode, as viewed from below. FIG. [Figure 15] 11 is a schematic view of the opening / closing cover in the open state in the second opening / closing mode, as viewed from the left. FIG. [Figure 16A] FIG. 2 is a schematic diagram showing a first modified example of the first embodiment. [Figure 16B] FIG. 13 is a schematic diagram showing a second modified example of the first embodiment. [Figure 16C] FIG. 11 is a schematic diagram showing a third modified example of the first embodiment. [Figure 17] 11 is a schematic diagram of an opening / closing cover and its periphery in a second embodiment, as viewed from the front. FIG. [Figure 18] 11 is a schematic diagram of an opening / closing cover and its periphery in a second embodiment, viewed from above. FIG. [Figure 19] 11 is a schematic diagram showing the opening / closing cover and its periphery in the second embodiment as viewed from below. FIG. [Figure 20A] FIG. 11 is a schematic view of a channel portion in a second embodiment as viewed in the longitudinal direction. [Figure 20B] 11 is a schematic view of a channel portion in embodiment 2 as viewed from the main surface portion side. FIG. [Figure 20C] FIG. 11 is a schematic diagram of a channel portion in the second embodiment as viewed in the short side direction. [Figure 21A] 13 is a schematic top view of a first arm according to a second embodiment. FIG. [Figure 21B] 11 is a schematic front view of a first arm in a second embodiment as viewed from the front. FIG. [Figure 22A] 13 is a schematic top view of a second arm according to a second embodiment, as viewed from above. FIG. [Figure 22B] 11 is a schematic front view of a second arm in the second embodiment as viewed from the front. FIG. [Figure 23A] 13 is a schematic diagram showing a part of the opening / closing cover and its surroundings in a third embodiment, viewed from the left. FIG. [Figure 23B] 13 is a schematic diagram showing a part of the opening / closing cover and its surroundings in a third embodiment as viewed from above. FIG. [Figure 23C]11 is a schematic diagram showing a part of the opening / closing cover in embodiment 3, viewed from the front side. FIG. [Figure 24] FIG. 1 is a schematic diagram showing a conventional example of a holding unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0031] (Embodiment 1) <Control Panel Cabinet Configuration> 1 is a schematic perspective view showing a control panel cabinet 10 in embodiment 1. First, the configuration of the control panel cabinet 10 in embodiment 1 of the present invention will be described.

[0032] The control panel cabinet 10 houses various control devices used to control equipment and the like, and together with these control devices constitutes the control panel 1. The various control devices include devices such as relays and switches, as well as parts such as terminal blocks and connectors. As shown in Fig. 1, the control panel cabinet 10 includes a housing 11, a door 12, and a holding unit 2A.

[0033] 1, the housing 11 contains various control devices, and is formed in a rectangular parallelepiped shape having a right side wall 13, a back wall 14, a left side wall 15, a top wall 16, and a bottom wall 17, and an opening 18 that opens to the front. The right side wall 13, the back wall 14, and the left side wall 15 are formed in a rectangular shape with the vertical direction Z as the longitudinal direction. The right side wall 13 and the left side wall 15 are provided so as to face each other in the horizontal direction Y.

[0034] The top wall 16 is formed in a rectangular shape with the longitudinal direction being the left-right direction Y, and the right, rear, and left edges are connected to the upper edges of the right side wall 13, the back wall 14, and the left side wall 15, respectively. Similarly, the bottom wall 17 is formed in a rectangular shape with the longitudinal direction being the left-right direction Y, and the right, rear, and left edges are connected to the lower edges of the right side wall 13, the back wall 14, and the left side wall 15, respectively. The top wall 16 and the bottom wall 17 are provided so as to face each other in the vertical direction Z. The opening 18 is divided up, up, down, left, and right by the front ends of the top wall 16, the bottom wall 17, the left side wall 15, and the right side wall 13. Note that a part of the housing 11 may be configured to be detachable from other parts of the housing 11. Also, each side wall of the housing 11 (the right side wall 13, the back wall 14, and the left side wall 15) may be composed of a single member (for example, a plate-shaped member) or may be composed of multiple members.

[0035] The door 12 opens and closes the opening 18 of the housing 11, and as shown in Fig. 1, is rotatably attached to the front end of the right side wall 13 via a hinge (not shown). The door 12 is configured to open and close the opening 18 of the housing 11 by rotating in a hinged door manner.

[0036] Fig. 2 is a schematic front view of the holding unit 2A in the first embodiment as seen from the front. Fig. 3 is a schematic side view of the holding unit 2A in the first embodiment as seen from the left. In Fig. 3, the front direction is indicated as the - (negative) X direction, and the rear direction is indicated as the + (positive) X direction, and the same is true for the following figures. Note that Fig. 3 shows the opening / closing cover 3 in a closed state, and the first arm 4B and the second arm 5B are not shown in Fig. 3.

[0037] The holding unit 2A holds various control devices on the inner surface 19a side of a side wall portion 19 (in this embodiment, the back wall portion 14) constituting one side wall of the housing 11. As shown in Fig. 2 and Fig. 3, the holding unit 2A in this embodiment has a first device holder 20, a first wiring holder 21, an opening / closing cover 3, a second device holder 22, a second wiring holder 23, two left and right first arms 4A, 4B, and two left and right second arms 5A, 5B. Each of these components will be described below.

[0038] [First equipment holder] As shown in Fig. 2 and Fig. 3, the first device holder 20 is attached to the side wall portion 19, and holds some of the various control devices (indicated by symbol Q1 in Fig. 3) arranged in a first direction D1, which is the width direction of the side wall portion 19. The first device holder 20 is formed, for example, of a DIN rail (a rail for mounting devices conforming to the Japanese Industrial Standard JIS C 2812, also called an IEC rail) extending in the first direction D1. This makes it possible to easily realize the first device holder 20. The first device holder 20 is fixed to the inner surface 19a of the side wall portion 19 by fasteners such as bolts (not shown).

[0039] [First wiring holder] Fig. 4 is a schematic diagram of the first wiring holder 21 and its periphery in embodiment 1 as viewed from above. Fig. 5 is a schematic diagram of the first wiring holder 21 and its periphery in embodiment 1 as viewed from below.

[0040] 2 and 3, the first wiring holder 21 is attached to the side wall 19 so as to be aligned with the first device holder 20 in the up-down direction Z (below the first device holder 20 in this embodiment), and holds the electric wire connected to the control device held by the first device holder 20 along the first direction D1. As shown in FIGS. 3 to 5, the first wiring holder 21 in this embodiment is composed of a duct body 210 that is U-shaped when viewed in the first direction D1 and extends in the first direction D1, and a duct lid 211 that closes and opens / closes an opening portion of the U-shaped duct body 210, and therefore is formed into a duct shape (square tube shape) extending in the first direction D1 as a whole, and is fixed to the inner surface 19a of the side wall 19 by a fastener (not shown) such as a bolt at the wall portion of the duct body 210 facing the duct lid 211. 4 and 5, a plurality of slits 212 through which electric wires can be inserted are formed in the upper and lower wall portions of the duct body 210 of the first wiring holder 21. Note that the first wiring holder 21 may hold electric wires other than the electric wires connected to the control device held by the first device holder 20.

[0041] As described above, the first equipment holder 20 and the first wiring holder 21 are attached to the side wall portion 19 so as to be aligned in the vertical direction Z, so that some of the various control equipment held by the first equipment holder 20 and the electric wires held by the first wiring holder 21 can be held so as to be aligned in the vertical direction Z on the inner surface 19a side of the side wall portion 19.

[0042] [Opening and closing cover] Fig. 6A is a schematic diagram of the opening-closing cover 3 in embodiment 1 viewed in the longitudinal direction. Fig. 6B is a schematic diagram of the opening-closing cover 3 in embodiment 1 viewed from one end in the lateral direction. Fig. 6C is a schematic diagram of the opening-closing cover 3 in embodiment 1 viewed from the front surface 3a side. Fig. 6D is a schematic diagram of the opening-closing cover 3 in embodiment 1 viewed from the other end in the lateral direction.

[0043] As shown in Fig. 3, the opening / closing cover 3 is provided on the inside of the housing 11 with respect to the first wiring holder 21, that is, on the front side (in front of the first wiring holder 21 in this embodiment). The opening / closing cover 3 in this embodiment is formed from a metal plate (such as an aluminum plate) in a substantially rectangular shape with the first direction D1 as the longitudinal direction as shown in Fig. 2, and more specifically, is formed by pressing or the like into a U-shape as viewed in the longitudinal direction as shown in Figs. 3 and 6A, and includes elongated flange portions 30, 31 extending in the first direction D1 at both ends in the lateral direction, and a rectangular main surface portion 32 formed between the flange portions 30, 31 as shown in Figs. 6A to 6D. In other words, the flange portions 30, 31 are connected to both ends of the lateral direction of the main surface portion 32. Of both sides of the main surface portion 32, the outer surface facing outward in the U-shape of the opening / closing cover 3 constitutes the front surface 3a of the opening / closing cover 3, and the inner surface facing inward in the U-shape of the opening / closing cover 3 constitutes the back surface 3b opposite to the front surface 3a.

[0044] 6B, the shape of the opening / closing cover 3 in this embodiment will be described in more detail. On the flange portion 30, hooks 300 and 301 bent in an L-shape so that the hook tip faces one side of the longitudinal direction of the flange portion 30, i.e., one side of the first direction D1 (the right in this embodiment), and trapezoidal tabs 302 and 303 with the main surface portion 32 side as the bottom base are formed by punching or the like. The hook 300 and the tab 302 are lined up in order from the outer side (left side) in the longitudinal direction at one end (left end) in the longitudinal direction, and the hook 301 and the tab 303 are lined up in order from the inner side (left side) in the longitudinal direction at the other end (right end) in the longitudinal direction. The hook 300 and the tab 302 are connected by a connecting edge 304 extending linearly, and the hook 301 and the tab 303 are connected by a connecting edge 305 extending linearly. The tabs 302, 303 each have slits 306, 307 formed extending from the edge of the upper base side (tip side) of the trapezoid in the short direction of the flange portion 30 (direction perpendicular to the first direction D1), and each have circular holes 308, 309 formed on the lower base side (base end side) of the trapezoid.

[0045] As shown in Fig. 6D, in the flange portion 31, similarly to the flange portion 30, hooks 310 and 311 bent in an L-shape so that the hook tips face in the opposite direction to the hooks 300 and 301 (to the left in this embodiment), and trapezoidal tabs 312 and 313 with the main surface portion 32 side as the bottom are formed by punching or the like. The tabs 312 and the hooks 310 are lined up in order from the outside in the longitudinal direction (left side) at one end (left end) in the longitudinal direction, and the tabs 313 and the hooks 311 are lined up in order from the inside in the longitudinal direction (left side) at the other end (right end) in the longitudinal direction. The hooks 310 and the tabs 312 are connected by a connecting edge 314 extending linearly, and the hooks 311 and the tabs 313 are connected by a connecting edge 315 extending linearly. The tabs 312, 313 are each formed with slits 316, 317 extending from an edge of the upper base side (tip side) of the trapezoid in the short direction of the flange portion 31 (direction perpendicular to the first direction D1), and with circular holes 318, 319 formed on the lower base side (base end side) of the trapezoid. The opening / closing cover 3 is fixed to the first arms 4A, 4B by fasteners such as bolts (not shown) inserted into the circular holes 308, 309 of the flange portion 30, except during maintenance, and can also be fixed to the second arms 5A, 5B by fasteners such as bolts (not shown) inserted into the circular holes 318, 319 of the flange portion 31, as necessary.

[0046] 3, the opening-closing cover 3 formed as described above is provided rotatably about rotation axes δ1, δ2 extending in the first direction D1, and is configured to be openable and closable by rotation about the rotation axes δ1, δ2 between a closed state in which the back surface 3b faces the first wiring holder 21, and an open state in which the back surface 3b does not face the first wiring holder 21. The rotation axes δ1, δ2 are located on both ends of the opening-closing cover 3 in the short side direction, and the details thereof will be described in detail later together with the opening and closing operation of the opening-closing cover 3.

[0047] Fig. 7A is a schematic diagram showing an example in which the opening-closing cover 3 is opened by rotating it counterclockwise in the figure. Fig. 7B is a schematic diagram showing an example in which the opening-closing cover 3 is opened by rotating it clockwise in the figure. Note that first arm 4B and second arm 5B are not shown in Figs. 7A and 7B.

[0048] In the closed state shown in Fig. 3, the opening / closing cover 3 is oriented such that its short side is aligned with the vertical direction Z (the flanges 30, 31 at both ends are on the upper and lower sides, respectively), whereas in the open state shown in Figs. 7A and 7B, its short side intersects with the vertical direction Z. Fig. 7A shows an example of an open state achieved by rotation about a rotation axis δ1 (an example corresponding to a first opening / closing mode described later), in which the opening / closing cover 3 is oriented such that the back surface 3b faces downward or forward. Fig. 7B shows an example of an open state achieved by rotation about a rotation axis δ2 (an example corresponding to a second opening / closing mode described later), in which the opening / closing cover 3 is oriented such that the back surface 3b faces upward or forward.

[0049] 4, 5, 6B, and 6D, the opening / closing cover 3 formed as described above includes first engagement portions 35A, 35B engageable with first arms 4A, 4B, respectively, second engagement portions 36A, 36B engageable with second arms 5A, 5B, respectively, and first guide portions 37A, 37B and second guide portions 38A, 38B that guide the opening and closing of the opening / closing cover 3. As shown in FIG. 6B, the first engagement portions 35A, 35B in this embodiment are respectively constituted by the above-mentioned hooks 300, 301, and similarly, the second engagement portions 36A, 36B in this embodiment are respectively constituted by hooks 310, 311, as shown in FIG. 6D. As shown in Fig. 6B, the first guide portions 37A, 37B in this embodiment are respectively configured with slits 306, 307 formed in the tabs 302, 303, and similarly, the second guide portions 38A, 38B in this embodiment are respectively configured with slits 316, 317 formed in the tabs 312, 313, as shown in Fig. 6D. Each of these components will be described in detail later together with the configuration of the first arms 4A, 4B and the second arms 5A, 5B and the opening and closing operation of the opening and closing cover 3.

[0050] [Second equipment holder] As shown in Fig. 3, the second device holder 22 is attached to the surface 3a of the opening / closing cover 3, and holds another part of the various control devices (specifically, for example, all or a part of the control devices other than the control devices held by the first device holder 20, shown by symbol Q2 in Fig. 3) arranged in the first direction D1. The second device holder 22 is formed, for example, of a DIN rail extending in the first direction D1. This makes it easy to realize the second device holder 22. The second device holder 22 is fixed to the surface 3a of the opening / closing cover 3 by fasteners such as bolts (not shown).

[0051] [Second wiring holder] As shown in Fig. 3, the second wiring holder 23 is attached to the back surface 3b of the opening / closing cover 3 so as to be located between the first wiring holder 21 and the second device holder 22 when the opening / closing cover 3 is in the closed state, and holds the electric wire connected to the control device held by the second device holder 22 along the first direction D1. As shown in Figs. 3 to 5, the second wiring holder 23 in this embodiment is composed of a duct body 230 that is U-shaped when viewed in the first direction D1 and extends in the first direction D1, and a duct lid 231 that closes and opens / closes an opening portion of the U-shaped duct body 230, and is therefore formed into a duct shape (square tube shape) extending in the first direction D1 as a whole, and is fixed to the back surface 3b of the opening / closing cover 3 by a fastener (not shown) such as a bolt at a wall portion of the duct body 230 facing the duct lid 231. 4 and 5, a plurality of slits 232 through which electric wires can be inserted are formed in the upper and lower wall portions of the duct body 230 of the second wiring holder 23. Note that the second wiring holder 23 may hold electric wires other than the electric wires connected to the control device held by the second device holder 22.

[0052] As described above, the second equipment holder 22 and the second wiring holder 23 are respectively attached to the front surface 3a and the back surface 3b of the opening / closing cover 3, so that another part of the various control equipment held by the second equipment holder 22 and the electric wires held by the second wiring holder 23 can be held by an opening / closing cover 3 different from the side wall portion 19.

[0053] When the opening / closing cover 3, which is provided to be rotatable around the rotation axes δ1 and δ2 extending in the first direction D1, which is the width direction of the side wall portion 19, is in the closed state, the second wiring holder 23 is located between the first wiring holder 21 and the second device holder 22. Therefore, as shown in FIG. 3, when the opening / closing cover 3 is in the closed state, the first wiring holder 21, the second wiring holder 23, and the second device holder 22 are arranged in order toward the front side in the second direction D2, which is the normal direction of the side wall portion 19. In other words, the electric wires and other parts of the various control devices held by these are arranged in order toward the front side in the second direction D2, which is the normal direction of the side wall portion 19. This makes it possible to effectively utilize the space on the front side of the first wiring holder 21 as a storage space for the second device holder 22 and the second wiring holder 23, thereby eliminating waste of space inside the control panel cabinet 10, i.e., saving space.

[0054] A specific configuration for allowing the opening / closing cover 3 to rotate about the rotation axes δ1 and δ2 will be described in detail below.

[0055] [First Arm] 2 and 3, each of the first arms 4A, 4B has a base end 40, which is one end, attached to the side wall 19 above the first wiring holder 21, and extends in a second direction D2, which is a normal direction of the side wall 19. A tip end 41, which is the other end of each of the first arms 4A, 4B, is located inside the housing 11, i.e., on the near side (in this embodiment, forward) relative to the base end 40. The first arms 4A, 4B are fixed to an inner surface 19a of the side wall 19 by fasteners such as bolts (not shown) so as to be aligned with each other in the first direction D1 at positions closer to the first wiring holder 21 than the first device holder 20.

[0056] Fig. 8A is a schematic side view of the first arms 4A and 4B in the first embodiment as viewed from the left. Fig. 8B is a schematic top view of the first arms 4A and 4B in the first embodiment as viewed from above. Fig. 8C is a schematic side view of the first arms 4A and 4B in the first embodiment as viewed from the right. Fig. 8D is a schematic front view of the first arms 4A and 4B in the first embodiment as viewed from the front. Since the first arms 4A and 4B have the same shape, in Figs. 8A to 8D, the reference numerals for the first arm 4A (reference numerals without parentheses) and the reference numerals for the first arm 4B (reference numerals with parentheses) are both shown in parentheses.

[0057] 8A to 8D, the first arms 4A, 4B are formed in the same shape and each include a pair of arm side walls 420, 421 facing in the first direction D1, an arm bottom wall 422 connected to the lower edges of the arm side walls 420, 421, and fastening plate parts 423, 424 connected to the arm side walls 420, 421 so as to face the side wall 19 on the base end 40 side and having long holes 425, 426 formed therein through which fasteners for attaching the first arms 4A, 4B to the side wall 19 are inserted. The arm side wall 420 intersects with the first direction D1 and is located on the left side of the arm side wall 421, and corresponds to the first arm side wall part recited in the claims.

[0058] The shape of the first arms 4A and 4B in this embodiment will be described in more detail. As shown in Fig. 8A and Fig. 8B, a first hole 43 penetrating in the first direction D1 is formed on the tip end 41 side of the arm side wall 420. As shown in Fig. 8A, the first hole 43 is formed with an inner circumferential surface 430, a protrusion 44 bulging from the inner circumferential surface 430 on the lower side and on the tip end 41 side, and a recessed groove 45 (corresponding to a rotation restricting recessed groove in claims) recessed from the inner circumferential surface 430 on the base end 40 side below the protrusion 44. Furthermore, a notch 427 is formed on the tip end 41 side of the arm side wall 420 by cutting out the upper end of the arm side wall 420 on the same line as the recessed (extending) direction of the recessed groove 45 in the first hole 43. On the other hand, as shown in Fig. 8C, a step surface 428 is formed on the upper side of the arm side wall portion 421 at the tip portion 41 so that the upper end of the arm side wall portion 420 is one step lower. Also, as shown in Fig. 8B, a fastening hole 429 is formed on the tip portion 41 side of the arm bottom wall portion 422, through which a fastener is inserted when fixing the opening-closing cover 3. For ease of explanation, when referring to the above-mentioned components of the first arms 4A and 4B, the reference numerals for the first arm 4A may be suffixed with A, and the reference numerals for the first arm 4B may be suffixed with B.

[0059] Each of the first arms 4A, 4B formed as described above is configured to support the opening / closing cover 3 by engaging the opening / closing cover 3 with the tip portion 41, and as shown in Figures 8A to 8D, each includes a first engaged portion 46A, 46B with which the first engaging portion 35A, 35B of the opening / closing cover 3 can engage with the tip portion 41, a first rotation regulating portion 47A, 47B that regulates further rotation of the opening / closing cover 3 that has become open in the first opening / closing mode described below, and a second rotation regulating portion 48A, 48B that regulates further rotation of the opening / closing cover 3 that has become open in the first opening / closing mode when the housing 11 is laid down so that the side wall portion 19 of the housing 11 is on the lower side.

[0060] In this embodiment, the first engaged portions 46A, 46B are each formed of the first holes 43 (43A, 43B) as shown in Fig. 8A and Fig. 8B. That is, the hooks 300, 301 of the opening / closing cover 3 are inserted into the first holes 43A, 43B, respectively, so that the first engaging portions 35A, 35B formed of the hooks 300, 301 engage with the first engaged portions 46A, 46B formed of the first holes 43A, 43B, respectively, as shown in Fig. 4. In other words, the first engagement portions 35A, 35B are respectively capable of engaging with the first engaged portions 46A, 46B, and more specifically, are arranged to be insertable into the first holes 43A, 43B, and are configured such that when inserted into the first holes 43A, 43B they become engaged with the first engaged portions 46A, 46B, and when removed from the first holes 43A, 43B they become disengaged from the first engaged portions 46A, 46B.

[0061] As shown in Fig. 8A, the first rotation restricting portions 47A, 47B in this embodiment are each formed of the recessed grooves 45 (45A, 45B). As shown in Fig. 8A, the second rotation restricting portions 48A, 48B in this embodiment are each formed of the protrusions 44 (44A, 44B). Each of these components will be described in detail later together with the opening and closing operation of the opening and closing cover 3.

[0062] [Second Arm] 2 and 3, each of the second arms 5A, 5B has a base end 50, which is one end, attached to the side wall portion 19 below the first wiring holder 21, and extends in a second direction D2, which is a normal direction of the side wall portion 19. A tip end 51, which is the other end of each of the second arms 5A, 5B, is located inside the housing 11, i.e., on the near side (in this embodiment, forward) relative to the base end 50. The second arms 5A, 5B are fixed to an inner surface 19a of the side wall portion 19 by fasteners such as bolts (not shown) so as to be aligned with each other in the first direction D1 at positions closer to the first wiring holder 21 than the first device holder 20.

[0063] Fig. 9A is a schematic side view of the second arms 5A and 5B in the first embodiment as viewed from the left. Fig. 9B is a schematic top view of the second arms 5A and 5B in the first embodiment as viewed from above. Fig. 9C is a schematic side view of the second arms 5A and 5B in the first embodiment as viewed from the right. Fig. 9D is a schematic front view of the second arms 5A and 5B in the first embodiment as viewed from the front. Since the second arms 5A and 5B have the same shape, Figs. 9A to 9D use parentheses to indicate both the symbol for the second arm 5A (symbol without parentheses) and the symbol for the second arm 5B (symbol with parentheses).

[0064] 9A to 9D, the second arms 5A, 5B are formed in the same shape and each include a pair of arm side walls 520, 521 facing in the first direction D1, an arm top wall 522 connected to the upper edges of the arm side walls 520, 521, and fastening plate portions 523, 524 connected to the arm side walls 520, 521 so as to face the side wall 19 on the base end 50 side and having long holes 525, 526 formed therein through which fasteners for attaching the second arms 5A, 5B to the side wall 19 are inserted. The arm side wall 521 intersects with the first direction D1 and is located on the right side of the arm side wall 520, and corresponds to the second arm side wall portion recited in the claims.

[0065] 9B and 9C, the arm side wall 521 has a second hole 53 formed on the tip 51 side thereof, penetrating the arm side wall 521 in the first direction D1. As shown in FIG. 9C, the arm side wall 521 has an inner circumferential surface 530, a protrusion 54 (corresponding to a rotation restricting protrusion in claims) protruding from the inner circumferential surface 530 on the upper side and tip 51 side, and a recessed groove 55 recessed from the inner circumferential surface 530 on the base end 50 side above the protrusion 54. Furthermore, the arm side wall 521 has a notch 527 formed by cutting out the lower end of the arm side wall 521 on the same line as the recessed (extending) direction of the recessed groove 55 in the second hole 53. On the other hand, as shown in Fig. 9A, a step surface 528 is formed on the underside of arm side wall portion 520 at tip portion 51 so that the lower end of arm side wall portion 521 is one step higher. Also, as shown in Fig. 9B, a fastening hole 529 is formed on tip portion 51 side of arm top wall portion 522 through which a fastener is inserted when fixing open-close cover 3. Hereinafter, for ease of explanation, when referring to the above-mentioned components of second arms 5A and 5B, the suffix A may be added to the reference numerals for second arm 5A and the suffix B may be added to the reference numerals for second arm 5B.

[0066] Each of the second arms 5A, 5B formed as described above is configured to support the opening / closing cover 3 by engaging the opening / closing cover 3 with the tip portion 51, and as shown in Figures 9B and 9C, each includes second engaged portions 56A, 56B with which the second engaging portions 36A, 36B of the opening / closing cover 3 can engage with the tip portion 51, third rotation regulating portions 57A, 57B that regulate further rotation of the opening / closing cover 3 that has become open in the second opening / closing mode described below, and fourth rotation regulating portions 58A, 58B that regulate further rotation of the opening / closing cover 3 that has become open in the second opening / closing mode when the housing 11 is laid down so that the side wall portion 19 of the housing 11 is on the lower side.

[0067] In this embodiment, the second engaged portions 56A, 56B are each formed by the above-mentioned second holes 53 (53A, 53B) as shown in Fig. 9B and Fig. 9C. That is, the hooks 310, 311 of the opening / closing cover 3 are inserted into the second holes 53A, 53B, respectively, so that the second engaging portions 36A, 36B formed by the hooks 310, 311 engage with the second engaged portions 56A, 56B formed by the second holes 53A, 53B, respectively, as shown in Fig. 5. In other words, the second engaging portions 36A, 36B are respectively engageable with the second engaged portions 56A, 56B, and more specifically, are arranged to be insertable into the second holes 53A, 53B, and are configured such that when inserted into the second holes 53A, 53B they become engaged with the second engaged portions 56A, 56B, while when removed from the second holes 53A, 53B they become disengaged from the second engaged portions 56A, 56B.

[0068] As shown in Fig. 9C, the third rotation restricting portions 57A and 57B in this embodiment are each formed of the above-mentioned projections 54 (54A and 54B). Similarly to the third rotation restricting portions 57A and 57B, the fourth rotation restricting portions 58A and 58B in this embodiment are each formed of the above-mentioned projections 54 (54A and 54B) as shown in Fig. 9C. Each of these components will be described in detail later together with the opening and closing operation of the opening and closing cover 3.

[0069] As described above, the first engaging portions 35A, 35B and the first engaged portions 46A, 46B formed by the first holes 43A, 43B and the first engaging portions 35A, 35B arranged so as to be insertable into the first holes 43A, 43B can easily engage with each other, and similarly, the second engaging portions 56A, 56B and the second engaged portions 56A, 56B formed by the second holes 53A, 53B and the second engaging portions 36A, 36B arranged so as to be insertable into the second holes 53A, 53B can easily engage with each other.

[0070] Regarding the positional relationship between the first engaging portions 35A, 35B, second engaging portions 36A, 36B, first engaged portions 46A, 46B and second engaged portions 56A, 56B described above, the positional relationship between these components is set so that when the second engaging portions 36A, 36B are removed from the second holes 53A, 53B, the first engaging portions 35A, 35B are inserted into the first holes 43A, 43B, while when the first engaging portions 35A, 35B are removed from the first holes 43A, 43B, the second engaging portions 36A, 36B are inserted into the second holes 53A, 53B. In other words, the positional relationship between these components is set so that when the second engaging portions 36A, 36B are not engaged with the second engaged portions 56A, 56B, the first engaging portions 35A, 35B are engaged with the first engaged portions 46A, 46B, while when the first engaging portions 35A, 35B are not engaged with the first engaged portions 46A, 46B, the second engaging portions 36A, 36B are engaged with the second engaged portions 56A, 56B. This makes it possible to avoid a state in which the first engaging portions 35A, 35B are not engaged with the first engaged portions 46A, 46B and the second engaging portions 36A, 36B are not engaged with the second engaged portions 56A, 56B, and therefore it is possible to prevent the opening / closing cover 3 from falling off the first arms 4A, 4B and the second arms 5A, 5B. In addition, when the above positional relationship is set, the first engaging portions 35A, 35B may be engaged with the first engaged portions 46A, 46B and the second engaging portions 36A, 36B may be engaged with the second engaged portions 56A, 56B.

[0071] In this embodiment, the first arms 4A, 4B and the second arms 5A, 5B are formed in the same shape, but the only difference is the orientation in which they are attached to the side wall portion 19 (i.e., the orientation of the second arms 5A, 5B differs by 180 degrees around the second direction D2 from the orientation of the first arms 4A, 4B). This allows the use of common parts, thereby reducing the manufacturing cost of the holding unit 2A.

[0072] [Opening and closing operation of the opening and closing cover] Next, there will be described an opening and closing operation of the above-described opening and closing cover 3. The opening and closing cover 3 in this embodiment is configured to be capable of being opened and closed in two opening and closing modes: a first opening and closing mode and a second opening and closing mode.

[0073] FIG. 10A is a schematic diagram of a part of the opening / closing cover 3 that can be opened and closed in the first opening / closing mode, as viewed from above. FIG. 10B is a schematic diagram of a part of the opening / closing cover 3 that can be opened and closed in the first opening / closing mode, as viewed from below. Note that FIGS. 10A and 10B are diagrams showing the left end of the opening / closing cover 3, that is, the periphery of the first arm 4A and the second arm 5A, but the periphery of the first arm 4B and the second arm 5B is similar, so for reference, the reference numerals relating to the first arm 4B and the second arm 5B are also shown in parentheses. FIG. 11 is a schematic diagram showing the opening / closing cover 3 that is in an open state in the first opening / closing mode. FIG. 12 is a schematic diagram showing a state in which the opening / closing cover 3 that is in an open state in the first opening / closing mode is restricted from further rotation. FIG. 13 is a schematic diagram showing the opening / closing cover 3 that is in an open state in the first opening / closing mode with the housing 11 laid down. Note that Figures 11 to 13 are views of the opening / closing cover 3 from the left, i.e., the left side of the first arm 4A and the second arm 5A, but since the views from the left side of the first arm 4B and the second arm 5B are the same, the symbol for the first arm 4B is also shown in parentheses for reference.

[0074] First, the first opening / closing mode is an opening / closing mode in which the first engagement portions 35A, 35B of the opening / closing cover 3 are engaged with the first engaged portions 46A, 46B of the first arms 4A, 4B and the second engagement portions 36A, 36B are not engaged with the second engaged portions 56A, 56B of the second arms 5A, 5B, and the opening / closing cover 3 rotates around the first engagement portions 35A, 35B. In this embodiment, in a state where the first engagement parts 35A, 35B are inserted into the first holes 43A, 43B of the first arms 4A, 4B as shown in Fig. 10A, and the second engagement parts 36A, 36B are removed from the second holes 53A, 53B of the second arms 5A, 5B as shown in Fig. 10B, the movement of the first engagement parts 35A, 35B is restricted by the inner wall surfaces of the first holes 43A, 43B, so that a rotation axis δ1 is formed around the first engagement parts 35A, 35B as shown in Fig. 7A and Fig. 11, and therefore the opening / closing cover 3 can be rotated around the rotation axis δ1 around the first engagement parts 35A, 35B, that is, can be opened and closed in the first opening / closing mode. As shown in Fig. 7A and Fig. 11, the opening / closing cover 3 opens by rising up from the bottom to the front in the first opening / closing mode. Incidentally, since the position of the rotation axis δ1 changes slightly depending on the movement of the first engagement portions 35A, 35B, the rotation axis δ1 of the opening / closing cover 3 is conceptually shown in FIG. 7A and FIG.

[0075] As shown in Fig. 11, when the opening / closing cover 3 is opened in the first opening / closing mode, the first engagement parts 35A, 35B of the opening / closing cover 3 approach the recessed grooves 45A, 45B of the first arms 4A, 4B. When the hand is released from the opening / closing cover 3 in this state, as shown in Fig. 12, the first engagement parts 35A, 35B fit into the recessed grooves 45A, 45B due to the weight of the opening / closing cover 3. In other words, the recessed grooves 45A, 45B are formed at positions where the first engagement parts 35A, 35B can be fitted into so as to restrict further rotation of the opening / closing cover 3 that has been opened in the first opening / closing mode. The first rotation restriction parts 47A, 47B formed by the recessed grooves 45A, 45B restrict the rotation of the opening / closing cover 3 that has been opened in the first opening / closing mode to return to the closed state, and restrict further rotation of the opening / closing cover 3. This allows the operator to work with both hands without holding the opening / closing cover 3 while the opening / closing cover 3 is in the open state, thus improving workability. In addition, the first rotation restricting portions 47A, 47B can be easily realized by the recessed grooves 45A, 45B as described above. As described above, the connection edge 304 of the opening / closing cover 3 is recessed downward with respect to the upper end edges of the first arms 4A, 4B by the notches 427 in the first arms 4A, 4B so that the first engagement portions 35A, 35B are reliably fitted into the recessed grooves 45A, 45B by the weight of the opening / closing cover 3.

[0076] When returning the opening / closing cover 3 that has been kept in the open state as described above to the closed state, the opening / closing cover 3 can be lifted from the state shown in Figure 12 to the state shown in Figure 11, whereby the restriction on the rotation of the opening / closing cover 3 by the first rotation restriction parts 47A, 47B is released, and then the opening / closing cover 3 can be rotated to the closed state again.

[0077] 10A, by opening and closing the opening-closing cover 3 in the first opening / closing mode with the step surfaces 428 of the first arms 4A, 4B inserted into the slits 306, 307 of the flange portion 30 of the opening-closing cover 3, the movement of the opening-closing cover 3 in the first direction D1 relative to the first arms 4A, 4B is restricted by the inner wall surfaces of the slits 306, 307 extending in a direction perpendicular to the first direction D1. The opening and closing of the opening-closing cover 3 is guided by the first guide portions 37A, 37B formed by the slits 306, 307. This allows the opening and closing of the opening-closing cover 3 to be opened and closed smoothly. Furthermore, by restricting the movement of the opening-closing cover 3 in the first direction D1 with the inner wall surfaces of the slits 306, 307, when one first engagement portion (e.g., 35B) of the opening-closing cover 3 has come out of one first hole (e.g., 43B), the other first engagement portion (e.g., 35A) is prevented from coming out of the other first hole (e.g., 43A) (to prevent the opening-closing cover 3 from falling off). The first guide portions 37A, 37B can be easily realized by the slits 306, 307 as described above.

[0078] Furthermore, when assembling the control panel 1, when the opening / closing cover 3 is opened in the first opening / closing mode with the housing 11 laid down so that the side wall portion 19 is on the lower side, the first engagement portions 35A, 35B approach the protrusions 44A, 44B of the first arms 4A, 4B. When the hand is released from the opening / closing cover 3 in this state, as shown in FIG. 13, the first engagement portions 35A, 35B interfere with the protrusions 44A, 44B from below due to the rotation of the opening / closing cover 3 under its own weight. In other words, the protrusions 44A, 44B are formed at positions where they can interfere with the first engagement portions 35A, 35B so as to restrict further rotation of the opening / closing cover 3 that is in the open state in the first opening / closing mode with the housing 11 laid down. The second rotation restriction portions 48A, 48B formed by the protrusions 44A, 44B restrict further rotation of the opening / closing cover 3 that is in the open state in the first opening / closing mode with the housing 11 laid down. As a result, even if the housing 11 is laid down during assembly of the control panel 1, the worker can work with both hands without holding the opening / closing cover 3 while the opening / closing cover 3 is in the open state, thereby improving workability. In addition, the second rotation restricting portions 48A, 48B can be easily realized by the above-mentioned protrusions 44A, 44B.

[0079] FIG. 14A is a schematic diagram of a part of the opening / closing cover 3 that can be opened and closed in the second opening / closing mode, as viewed from above. FIG. 14B is a schematic diagram of a part of the opening / closing cover 3 that can be opened and closed in the second opening / closing mode, as viewed from below. Note that FIGS. 14A and 14B are diagrams showing the left end of the opening / closing cover 3, i.e., the periphery of the first arm 4A and the second arm 5A, but the periphery of the first arm 4B and the second arm 5B is similar, so for reference, the reference symbols for the first arm 4B and the second arm 5B are also shown in parentheses. FIG. 15 is a schematic diagram of the opening / closing cover 3 that has been opened in the second opening / closing mode, as viewed from the left. Note that FIG. 15 is a diagram showing the opening / closing cover 3 as viewed from the left, i.e., the left side of the first arm 4A and the second arm 5A, but the same is true when viewed from the left side of the first arm 4B and the second arm 5B, so for reference, the reference symbols for the second arm 5B are also shown in parentheses.

[0080] On the other hand, the second opening / closing mode is an opening / closing mode in which the second engagement portions 36A, 36B of the opening / closing cover 3 are engaged with the second engaged portions 56A, 56B of the second arms 5A, 5B and the first engagement portions 35A, 35B are not engaged with the first engaged portions 46A, 46B of the first arms 4A, 4B, and the opening / closing cover 3 rotates around the second engagement portions 36A, 36B. In this embodiment, in a state where the first engagement parts 35A, 35B are removed from the first holes 43A, 43B of the first arms 4A, 4B as shown in Fig. 14A, and the second engagement parts 36A, 36B are inserted into the second holes 53A, 53B of the second arms 5A, 5B as shown in Fig. 14B, the movement of the second engagement parts 36A, 36B is restricted by the inner wall surfaces of the second holes 53A, 53B, so that a rotation axis δ2 is formed around the second engagement parts 36A, 36B as shown in Fig. 7B and Fig. 15, and therefore the opening / closing cover 3 can be rotated around the rotation axis δ2 around the second engagement parts 36A, 36B, that is, can be opened and closed in the second opening / closing mode. As shown in Fig. 7B and Fig. 15, the opening / closing cover 3 opens by falling forward from the top in the second opening / closing mode. Incidentally, since the position of the rotation axis δ2 changes slightly depending on the movement of the second engagement portions 36A, 36B, the rotation axis δ2 of the opening / closing cover 3 is conceptually shown in FIG. 7B and FIG.

[0081] As shown in FIG. 15, when the cover 3 is opened in the second opening / closing mode, the second engagement parts 36A, 36B of the cover 3 approach the projections 54A, 54B of the second arms 5A, 5B. When the cover 3 is released in this state, the cover 3 rotates under its own weight, causing the second engagement parts 36A, 36B to interfere with the projections 54A, 54B from below, as shown in FIG. 15. In other words, the projections 54A, 54B are formed at positions where they can interfere with the second engagement parts 36A, 36B so as to restrict further rotation of the cover 3 that is in the open state in the second opening / closing mode. The third rotation restriction parts 57A, 57B formed by the projections 54A, 54B restrict further rotation of the cover 3 that is in the open state in the second opening / closing mode. This allows the operator to work with both hands without holding the cover 3 while the cover 3 is in the open state, thereby improving workability. Moreover, the third rotation restricting portions 57A and 57B can be easily realized by the protrusions 54A and 54B as described above.

[0082] 14B, by opening and closing the opening-closing cover 3 in the second opening / closing mode with the step surfaces 528 of the second arms 5A, 5B inserted into the slits 316, 317 of the flange portion 31 of the opening-closing cover 3, the movement of the opening-closing cover 3 in the first direction D1 relative to the second arms 5A, 5B is restricted by the inner wall surfaces of the slits 316, 317 extending in a direction perpendicular to the first direction D1. The opening and closing of the opening-closing cover 3 is guided by the second guide portions 38A, 38B formed by the slits 316, 317. This allows the opening and closing of the opening-closing cover 3 to be opened and closed smoothly. Furthermore, by restricting the movement of the opening-closing cover 3 in the first direction D1 with the inner wall surfaces of the slits 316, 317, when one second engagement portion (e.g., 36B) of the opening-closing cover 3 has come out of one second hole (e.g., 53B), the other second engagement portion (e.g., 36A) is prevented from coming out of the other second hole (e.g., 53A) (to prevent the opening-closing cover 3 from falling off). The second guide portions 38A, 38B can be easily realized by the slits 316, 317 as described above.

[0083] Furthermore, although illustration is omitted because it is similar to the case of FIG. 13 (first opening / closing mode), when the opening / closing cover 3 is opened in the second opening / closing mode with the housing 11 laid down so that the side wall portion 19 is on the lower side, for example, during assembly of the control panel 1, the second engagement portions 36A, 36B approach the protrusions 54A, 54B. In this state, by releasing the opening / closing cover 3, the second engagement portions 36A, 36B interfere with the protrusions 54A, 54B from below due to the rotation of the opening / closing cover 3 under its own weight. In other words, the protrusions 54A, 54B are formed at positions where they can interfere with the second engagement portions 36A, 36B so as to restrict further rotation of the opening / closing cover 3 that is in the open state in the second opening / closing mode with the housing 11 laid down. Further rotation of the opening / closing cover 3 in the second opening / closing mode with the housing 11 laid down is restricted by the fourth rotation restriction portions 58A, 58B constituted by the protrusions 54A, 54B. As a result, even if the housing 11 is laid down during assembly of the control panel 1, the worker can work with both hands without holding the opening / closing cover 3 while the opening / closing cover 3 is in the open state, thereby improving workability. In addition, the fourth rotation restricting portions 58A, 58B can be easily realized by the above-mentioned protrusions 54A, 54B.

[0084] As in the first and second opening / closing modes, by rotating the opening / closing cover 3 around the rotation axis δ1 or δ2, the opening / closing cover 3 changes from a closed state in which the back surface 3b faces the first wiring holder 21 to an open state in which the opening / closing cover 3 is open so as not to face the first wiring holder 21, so that the electric wires held by the first wiring holder 21 change from a state in which the electric wires are blocked on the front side by the opening / closing cover 3 as shown in Fig. 3 to a state in which the electric wires are not blocked on the front side as shown in Fig. 7A and Fig. 7B, that is, a state in which the electric wires are easily visible and reachable by an operator. Also, by changing the opening / closing cover 3 from a closed state to an open state, the electric wires held by the second wiring holder 23 on the back surface 3b of the opening / closing cover 3 change from a state in which the electric wires are hidden by the back surface 3b of the opening / closing cover 3 as shown in Fig. 3 to a state in which the electric wires are easily visible and reachable by an operator as shown in Fig. 7A and Fig. 7B. As a result, when the opening / closing cover 3 is in the closed position, it is possible to work on the first wiring holder 21 which is blocked by the opening / closing cover 3 and the second wiring holder 23 which is hidden by the back surface 3b of the opening / closing cover 3 without removing other control equipment from the control panel cabinet 10.Therefore, good workability can be ensured while achieving an arrangement that contributes to space saving as described above.

[0085] Such a control panel cabinet 10 can save space while ensuring good workability.

[0086] As described above, the opening / closing cover 3 can be opened and closed in a first opening / closing mode in which it rotates about the first engagement portions 35A, 35B engaged with the tip portions 41 of each of the first arms 4A, 4B attached to the side wall portion 19 above the first wiring holder 21, while it can be opened and closed in a second opening / closing mode in which it rotates about the second engagement portions 36A, 36B engaged with the tip portions 51 of the second arms 5A, 5B attached to the side wall portion 19 below the first wiring holder 21.As a result, the opening / closing cover 3 can be opened from both the bottom and the top to make it easier for the worker to work, thereby improving workability. For example, if the electric wires held by the first wiring holder 21 exit the slits 212 in the first wiring holder 21 and are wired upward, it is advantageous to open the opening / closing cover 3 from above, as this makes it easier to see the upper side of the first wiring holder 21; conversely, if the electric wires held by the first wiring holder 21 exit the slits 212 in the first wiring holder 21 and are wired downward, it is advantageous to open the opening / closing cover 3 from below, as this makes it easier to see the underside of the first wiring holder 21.

[0087] In addition, without being limited to the above, the side wall portion 19 may be one or both of the right side wall portion 13 and the left side wall portion 15 of the housing 11, and even in this case, it is possible to save space while ensuring good workability, as described above.

[0088] The shapes of the first engaging parts 35A, 35B and the first engaged parts 46A, 46B may be any shapes that can be engaged with each other, for example, the first engaging parts 35A, 35B may be pins instead of the hooks 300, 301, and the first engaged parts 46A, 46B may be grooves instead of the first holes 43A, 43B. Similarly, the shapes of the second engaging parts 36A, 36B and the second engaged parts 56A, 56B may be any shapes that can be engaged with each other, for example, the second engaging parts 36A, 36B may be pins instead of the hooks 310, 311, and the second engaged parts 56A, 56B may be grooves instead of the second holes 53A, 53B.

[0089] However, without being limited to the above, the opening / closing cover 3 may be provided rotatable about one rotation axis extending in the first direction D1, for example, rotatable only about the rotation axis δ1. Even in this case, it is possible to save space while ensuring good operability in the same manner as above.

[0090] In addition, without being limited to the above, one first arm may be provided if the opening / closing cover 3 can be supported, or conversely, three or more first arms may be provided to more stably support the opening / closing cover 3, and similarly, one second arm may be provided if the opening / closing cover 3 can be supported, or conversely, three or more second arms may be provided to more stably support the opening / closing cover 3.

[0091] In addition, without being limited to the above, a configuration in which the opening / closing cover 3 is rotatable around a pivot axis extending in the first direction D1 may be adopted in place of the first arms 4A, 4B and second arms 5A, 5B as described above. For example, although not shown in the figure, a configuration may be adopted in which an axial member constituting the pivot axis and an axial support member supporting this axial member in front of the first wiring holder 21 are used.

[0092] (Variation 1) FIG. 16A is a schematic diagram showing a first modified example of the first embodiment. As shown in FIG. 16A, the side wall 19 may include a removable part 190 configured to be removable from the other part 11X in the housing 11. The removable part 190 is attached to the other part 11X by, for example, a fastener such as a bolt not shown. When the side wall 19 includes the removable part 190, the holding unit 2A may be attached to the removable part 190. Even in this case, it is possible to save space while ensuring good workability as in the above case. In this way, by attaching the holding unit 2A to the removable part 190, it is possible to detach the holding unit 2A together with the removable part 190 from the other part 11X in the housing 11. This makes it possible to perform work in a state where the holding unit 2A together with the removable part 190 is removed from the other part 11X (for example, in a state where the removable part 190 is placed flat on a workbench or the like so that the removable part 190 is on the lower side) during assembly or maintenance of the control panel 1, thereby improving workability.

[0093] (Variation 2) FIG. 16B is a schematic diagram showing a second modified example of the first embodiment. As shown in FIG. 16B, the side wall portion 19 may include an outer plate 191 and an inner plate 192 provided on the inner surface side of the outer plate 191 and configured to be detachable from another portion 19X of the side wall portion 19. The inner plate 192 shown in FIG. 16B is attached to a spacer 193 attached to the inner surface of the outer plate 191 by a fastener such as a bolt (not shown), but may be attached to the inner surface of the outer plate 191 instead of the spacer 193. When the side wall portion 19 includes the inner plate 192, the holding unit 2A may be attached to the inner plate 192. Even in this case, it is possible to save space while ensuring good workability, as in the above case. In this way, by attaching the holding unit 2A to the inner plate 192, it is possible to detach the holding unit 2A together with the inner plate 192 from another portion 19X of the side wall portion 19. This makes it possible to perform work such as assembling or maintaining the control panel 1 with the holding unit 2A removed from the other parts 19X together with the inner plate 192 (for example, laid flat on a workbench with the inner plate 192 facing downwards), thereby improving workability.

[0094] (Variation 3) 16C is a schematic diagram showing a third modified example of the first embodiment. As shown in FIG. 16C, the holding unit 2A may further include a second opening / closing cover 6 that is provided on the front side (front) of the opening / closing cover 3 to be rotatable around a rotation axis δ3 extending in the first direction D1, and that is configured to be openable and closable by rotation around the rotation axis δ3 between a closed state in which the back surface 6b faces the first wiring holder 21 and an open state in which the back surface 6b does not face the first wiring holder 21. By attaching further parts of various control devices to one or both of the front surface 6a and the back surface 6b of such a second opening / closing cover 6, the space on the front side of the opening / closing cover 3 can be effectively used as a storage space for further parts of various control devices, thereby making it possible to further save space.

[0095] (Embodiment 2) Fig. 17 is a schematic view of the opening / closing cover 7 and its periphery in embodiment 2 as viewed from the front. Fig. 18 is a schematic view of the opening / closing cover 7 and its periphery in embodiment 2 as viewed from above. Fig. 19 is a schematic view of the opening / closing cover 7 and its periphery in embodiment 2 as viewed from below. Next, the configuration of a control panel cabinet 10 in embodiment 2 of the present invention will be described, focusing on the differences from embodiment 1 above.

[0096] 17 to 19, the holding unit 2B in this embodiment has an opening / closing cover 7, three first arms 4C, 4D, 4E, and three second arms 5C, 5D, 5E, instead of the opening / closing cover 3, two first arms 4A, 4B, and two second arms 5A, 5B in the above-mentioned embodiment 1. The main difference between this embodiment and embodiment 1 is that in the above-mentioned embodiment 1, a hook is provided on the opening / closing cover (opening / closing cover 3) side, and holes are provided on the arms (first arms 4A, 4B and second arms 5A, 5B) side, whereas in this embodiment, a hook is provided on the arms (first arms 4C, 4D, 4E and second arms 5C, 5D, 5E) side, and holes are provided on the opening / closing cover (opening / closing cover 7) side.

[0097] 17 to 19, the opening / closing cover 7 in this embodiment includes a rail portion 70 provided along a first direction D1, and three channel portions 71A, 71B, 71C arranged at equal intervals in the first direction D1 and attached to the back side of the rail portion 70. The rail portion 70 is formed of a DIN rail.

[0098] Fig. 20A is a schematic diagram of channel portions 71A, 71B, and 71C in embodiment 2 viewed in the longitudinal direction. Fig. 20B is a schematic diagram of channel portions 71A, 71B, and 71C in embodiment 2 viewed from the main surface portion 72 side. Fig. 20C is a schematic diagram of channel portions 71A, 71B, and 71C in embodiment 2 viewed in the lateral direction. Since the shapes of channel portions 71A, 71B, and 71C are the same, in Figs. 20A to 20C, parentheses are used to indicate both the reference numerals for channel portion 71A (reference numerals without parentheses) and the reference numerals for channel portions 71B and 71C (reference numerals with parentheses).

[0099] The channel portions 71A, 71B, and 71C are formed in the same shape from a metal plate (such as an aluminum plate) into a substantially rectangular shape with a longitudinal direction perpendicular to the first direction D1, and more specifically, are formed by pressing or the like into a U-shape when viewed in the longitudinal direction as shown in Fig. 20A, and as shown in Figs. 20A to 20C, each includes a rectangular main surface portion 72, tab portions 73A and 73B connected to both short-side edges at one longitudinal end of the main surface portion 72, and tab portions 74A and 74B connected to both short-side edges at the other longitudinal end of the main surface portion 72. The tab portions 73A and 73B are each formed with through holes 75A and 75B penetrating on the same axis in the first direction D1, and similarly, the tab portions 74A and 74B are each formed with through holes 76A and 76B penetrating on the same axis in the first direction D1. The through hole 75A in each channel portion 71A, 71B, 71C constitutes a first engagement portion 77A, 77B, 77C that can engage with the first arms 4C, 4D, 4E, respectively, and similarly, the through hole 76B in each channel portion 71A, 71B, 71C constitutes a second engagement portion 78A, 78B, 78C that can engage with the second arms 5C, 5D, 5E, respectively.

[0100] Fig. 21A is a schematic top view of the first arms 4C, 4D, and 4E in embodiment 2 as viewed from above. Fig. 21B is a schematic front view of the first arms 4C, 4D, and 4E in embodiment 2 as viewed from the front. Since the first arms 4C, 4D, and 4E have the same shape, Figs. 21A and 21B use parentheses to indicate both the reference numeral for the first arm 4C (reference numeral without parentheses) and the reference numeral for the first arms 4D and 4E (reference numeral with parentheses).

[0101] The first arms 4C, 4D, and 4E in this embodiment are formed in the same shape. Unlike the first arms 4A and 4B in the above-mentioned embodiment 1, the first arms 4C, 4D, and 4E in this embodiment have a pin 490 formed on the tip 41 side of the arm bottom wall portion 422, the tip of which faces one side of the first direction D1 (leftward in this embodiment) and extends in the first direction D1, as shown in Figures 21A and 21B. The pins 490 in the first arms 4C, 4D, and 4E can be inserted into the through holes 75A in the channel portions 71A, 71B, and 71C, respectively, and constitute the first engaged portions 49C, 49D, and 49E with which the first engaging portions 77A, 77B, and 77C of the opening / closing cover 7 can be engaged, respectively. That is, the pins 490 in the first arms 4C, 4D, 4E are inserted into the through holes 75A in the channel portions 71A, 71B, 71C, respectively, so that the first engaged portions 49C, 49D, 49E formed by the pins 490 are engaged with the first engaging portions 77A, 77B, 77C formed by the through holes 75A, respectively. More specifically, the first engaging portions 77A, 77B, 77C are configured such that the pins 490 are inserted into the first engaged portions 49C, 49D, 49E, respectively, and the pins 490 are removed from the first engaged portions 49C, 49D, 49E, respectively.

[0102] Fig. 22A is a schematic top view of second arms 5C, 5D, and 5E in embodiment 2 as viewed from above. Fig. 22B is a schematic front view of second arms 5C, 5D, and 5E in embodiment 2 as viewed from the front. Since the shapes of second arms 5C, 5D, and 5E are the same, Figs. 22A and 22B use parentheses to indicate both the reference numeral for second arm 5C (reference numeral without parentheses) and the reference numeral for second arms 5D and 5E (reference numeral with parentheses).

[0103] The second arms 5C, 5D, and 5E in this embodiment are formed in the same shape. Unlike the second arms 5A and 5B in the above-mentioned embodiment 1, the second arms 5C, 5D, and 5E in this embodiment have a pin 590 formed on the tip 51 side of the arm top wall portion 522, the tip of which faces the other side of the first direction D1 (the right side in this embodiment) and extends in the first direction D1, as shown in Figures 22A and 22B. The pins 590 in the second arms 5C, 5D, and 5E can be inserted into the through holes 76B in the channel portions 71A, 71B, and 71C, respectively, and constitute second engaged portions 59C, 59D, and 59E with which the second engaging portions 78A, 78B, and 78C of the opening / closing cover 7 can be engaged, respectively. That is, the pin 590 of the second arms 5C, 5D, 5E is inserted into the through hole 76B of the channel portions 71A, 71B, 71C, respectively, so that the second engaged portions 59C, 59D, 59E formed by the pin 590 are engaged with the second engaging portions 78A, 78B, 78C formed by the through hole 76B, respectively. More specifically, the second engaging portions 78A, 78B, 78C are configured such that the pin 590 is inserted into the second engaged portions 59C, 59D, 59E, respectively, while the pin 590 is removed from the second engaging portions 59C, 59D, 59E, respectively.

[0104] The first opening / closing mode in this embodiment, although not shown, is an opening / closing mode in which the opening / closing cover 3 opens from the bottom, as in the above-mentioned embodiment 1, and rotates around the first engagement portions 77A, 77B, 77C in a state in which the first engagement portions 77A, 77B, 77C of the opening / closing cover 7 are engaged with the first engaged portions 49C, 49D, 49E of the first arms 4C, 4D, 4E and the second engagement portions 78A, 78B, 78C of the opening / closing cover 7 are not engaged with the second engaged portions 59C, 59D, 59E of the second arms 5C, 5D, 5E. In this case, the movement of the pin 490 constituting the first engaged portions 49C, 49D, 49E is regulated by the inner surface of the through hole 75A constituting the first engaging portions 77A, 77B, 77C, so that a rotation axis is formed around the first engaging portions 77A, 77B, 77C, and therefore the opening / closing cover 3 is capable of being opened and closed in the first opening / closing mode.

[0105] Similarly, the second opening / closing mode in this embodiment, although not shown, is an opening / closing mode in which the opening / closing cover 3 opens from the top, as in the above-mentioned embodiment 1, and rotates around the second engagement portions 78A, 78B, 78C in a state in which the second engagement portions 78A, 78B, 78C of the opening / closing cover 7 are engaged with the second engaged portions 59C, 59D, 59E of the second arms 5C, 5D, 5E and the first engagement portions 77A, 77B, 77C of the opening / closing cover 7 are not engaged with the first engaged portions 49C, 49D, 49E of the first arms 4C, 4D, 4E. In this case, the movement of the pin 590 constituting the second engaged portions 59C, 59D, 59E is regulated by the inner surface of the through hole 76B constituting the second engaging portions 78A, 78B, 78C, so that a rotation axis is formed around the second engaging portions 78A, 78B, 78C, and therefore the opening / closing cover 3 becomes capable of being opened and closed in the second opening / closing mode.

[0106] (Embodiment 3) FIG. 23A is a schematic diagram of a part of the opening / closing cover 8 in the third embodiment and its periphery seen from the left. FIG. 23B is a schematic diagram of a part of the opening / closing cover 8 in the third embodiment and its periphery seen from above. FIG. 23C is a schematic diagram of a part of the opening / closing cover 8 in the third embodiment seen from the front surface 8a side. Note that FIG. 23B and FIG. 23C are diagrams showing the left end of the opening / closing cover 8, that is, the periphery of the insertion opening 83C of the opening / closing cover 8, but since the periphery of the insertion openings 83D and 83E is similar, for reference, the reference numerals relating to the insertion openings 83D and 83E and the reference numerals of the components around them are shown in parentheses. Furthermore, the configuration of the control panel cabinet 10 in the third embodiment of the present invention will be described, focusing on the points different from the second embodiment.

[0107] The holding unit 2C in this embodiment has an opening / closing cover 8 instead of the opening / closing cover 7 in the above-mentioned embodiment 2, as shown in Figures 23A to 23C, and further has a holder mounting rail 9 for attaching the second wiring holder 23C to the back surface 8b of the opening / closing cover 8, as shown in Figure 23A.

[0108] 23B and 23C, the opening / closing cover 8 includes cylindrical portions 80, 81 extending in the first direction D1 at both ends in the short side direction, and a rectangular main surface portion 82 formed between the cylindrical portions 80, 81. The main surface portion 82 defines a front surface 8a and a back surface 8b opposite the front surface 8a.

[0109] The cylindrical portion 80 is formed with three rectangular insertion openings 83C, 83D, 83E cut out from the short end edge of the opening / closing cover 8 so that the pins 490 of the first arms 4C, 4D, 4E in the above-mentioned embodiment 2 can each be inserted therethrough. Similarly, the cylindrical portion 81 is formed with rectangular insertion openings 84C, 84D, 84E cut out from the short end edge of the opening / closing cover 8 so that the pins 590 of the second arms 5C, 5D, 5E in the above-mentioned embodiment 2 can each be inserted therethrough.

[0110] The insertion openings 83C, 83D, 83E constitute first engaging portions 85C, 85D, 85E that can engage with the first engaged portions 49C, 49D, 49E of the first arms 4C, 4D, 4E, respectively. That is, as shown in Fig. 23B, the pins 490 that constitute the first engaged portions 49C, 49D, 49E are inserted into the insertion openings 83C, 83D, 83E, respectively, so that the first engaging portions 85C, 85D, 85E constituted by the insertion openings 83C, 83D, 83E are engaged with the first engaged portions 49C, 49D, 49E, respectively.

[0111] Similarly, the insertion openings 84C, 84D, 84E constitute second engaging portions 86C, 86D, 86E that can engage with the second engaged portions 59C, 59D, 59E of the second arms 5C, 5D, 5E, respectively. That is, although not shown, the pins 590 that constitute the second engaged portions 59C, 59D, 59E are inserted into the insertion openings 84C, 84D, 84E, respectively, so that the second engaged portions 59C, 59D, 59E engage with the second engaging portions 86C, 86D, 86E constituted by the insertion openings 84C, 84D, 84E, respectively.

[0112] The holder mounting rail 9 in this embodiment is formed of a DIN rail extending in the first direction D1, and is fixed to the rear surface 8b of the opening / closing cover 8 by fasteners such as bolts (not shown). The second wiring holder 23C attached to the rear surface 8b of the opening / closing cover 8 via the holder mounting rail 9 is formed with an engagement port 233 with which the holder mounting rail 9 can engage. Instead of the engagement port 233, the second wiring holder 23C may be formed with a rail groove with which the holder mounting rail 9 can engage.

[0113] In this embodiment, the second device holder 22 is configured with a DIN rail attached to the front surface 8a of the opening / closing cover 8 and extending in the first direction D1. With this configuration, the second wiring holder 23 can be easily attached to the back surface 8b of the opening / closing cover 8, and the second device holder 22 can be easily realized.

[0114] A main feature of this embodiment is that the holder mounting rail 9 and the DIN rail constituting the second device holder 22 are integrally molded with the opening / closing cover 8 by extrusion molding or the like. This makes it possible to reduce the number of parts of the holding unit 2C, and therefore the manufacturing cost of the holding unit 2C. Note that the above-mentioned insertion openings 83C, 83D, 83E and insertion openings 84C, 84D, 84E are formed by cutting or the like after extrusion molding.

[0115] The first opening / closing mode in this embodiment is similar to that of the above-described embodiment 2, but differs from the above-described embodiment 2 in that the movement of the pin 490 constituting the first engaged portions 49C, 49D, 49E is regulated by the inner surfaces of the insertion openings 83C, 83D, 83E constituting the first engaging portions 85C, 85D, 85E, thereby forming a rotation axis around the first engaging portions 85C, 85D, 85E.

[0116] Similarly, the second opening / closing mode in this embodiment is similar to that of the above-described embodiment 2, but differs from the above-described embodiment 2 in that the movement of the pin 590 constituting the second engaged portions 59C, 59D, 59E is regulated by the inner surfaces of the insertion openings 84C, 84D, 84E constituting the second engaging portions 86C, 86D, 86E, thereby forming a rotation axis around the second engaging portions 86C, 86D, 86E.

[0117] The above embodiments are illustrative in every respect and are not intended to be limiting. Therefore, the technical scope of the present invention is not interpreted solely by the above embodiments and examples, but is defined by the claims. Furthermore, all modifications and changes within the scope of the claims are within the scope of the present invention. [Explanation of symbols]

[0118] 1 Control panel 10 Control Panel Cabinet 11. Cabinet 19 Side wall 19a Inside 190 Detachment section 191 Outer plate 192 Inner plate 20 The 1st machine ホルダ 21 1st wiring harness 22 The 2nd machine ホルダ 23,23C 2nd wiring harness 2A, 2B, 2C keep ユニット 3,7,8 opening and closing カバー 3a,6a,8a Surface 3b,6b,8b inside 35A,35B 1st series 36A,36B Second series joint 77A, 77B, 77C 1st series 78A, 78B, 78C Second series 85C,85D,85E 1st series 86C,86D,86E Second series 4A,4B,4C,4D,4E No.1アーム 40 Base end 41 Tip 420 Arm side wall portion (first arm side wall portion) 421 Arm side wall 43,43A,43B Hole 1 44,44A,44B Raised 45,45A,45B groove (reverse regulation groove) 46A, 46B First fastening part 47A,47B 1st Motion Regulation Division 48A, 48B Second rotary regulation section 49C, 49D, 49E The first part of the tie 5A,5B,5C,5D,5E No.2アーム 50 Base end 51 Tip 520 Arm side wall 521 Arm side wall portion (second arm side wall portion) 53,53A,53B Hole 2 54,54A,54B bulge (reverse regulation bulge) 55 groove 56A, 56B Second fastening part 57A,57B 3rd Motion Regulation Division 58A, 58B 4th rotation restriction part 59C, 59D, 59E 2nd engaged part 9 Holder mounting rail D1 1st direction D2 2nd direction Z vertical direction δ1, δ2, δ3 Rotation axis

Claims

1. A control panel cabinet including a rectangular parallelepiped housing that houses various control devices therein, and a holding unit that holds the various control devices on an inner surface side of a side wall portion that constitutes one side wall of the housing, The holding unit includes: a first device holder attached to the side wall portion and configured to hold some of the various control devices in a first direction, which is a width direction of the side wall portion; a first wiring holder attached to the side wall portion so as to be aligned in the vertical direction with the first device holder, and holding an electric wire connected to a control device held by the first device holder along the first direction; an opening / closing cover that is rotatably provided about a rotation axis extending in the first direction and that is configured to be openable and closable by rotation about the rotation axis between a closed state in which a back surface of the cover faces the first wiring holder and an open state in which the cover is opened so that the back surface does not face the first wiring holder; a second device holder attached to a surface opposite to a back surface of the opening / closing cover and configured to hold another part of the various control devices in the first direction; a second wiring holder attached to the back surface of the opening / closing cover so as to be positioned between the first wiring holder and the second equipment holder when the opening / closing cover is in the closed state, and which holds electric wires connected to a control equipment held by the second equipment holder along the first direction.

2. The control panel cabinet according to claim 1, The holding unit includes: one or more first arms each having a base end portion attached to the side wall portion above the first wiring holder and extending in a second direction that is a normal direction of the side wall portion; a base end portion which is one end of the second arm is attached to the side wall portion below the first wiring holder, and the second arm or arms extend in the second direction; the first arm includes a first engaged portion at a tip end portion, the first engaged portion being engageable with the opening / closing cover; the second arm includes a second engaged portion at a tip end portion, the second arm being capable of engaging with the opening / closing cover; The opening and closing cover is a first engaging portion engageable with the first engaged portion and a second engaging portion engageable with the second engaged portion, A control panel cabinet configured to be able to be opened and closed in a first opening / closing mode in which the cabinet rotates around the first engaging part when the first engaging part is engaged with the first engaged part and the second engaging part is not engaged with the second engaged part, and to be able to be opened and closed in a second opening / closing mode in which the cabinet rotates around the second engaging part when the second engaging part is engaged with the second engaged part and the first engaging part is not engaged with the first engaged part.

3. The control panel cabinet according to claim 2, the first arm includes a first arm side wall portion intersecting the first direction, the first engaged portion is formed of a first hole penetrating the first arm side wall portion in the first direction, the first engaging portion is provided so as to be insertable into the first hole, and is configured to be in an engaged state with the first engaged portion when inserted into the first hole, and to be in a non-engaged state with the first engaged portion when removed from the first hole; the second arm includes a second arm side wall portion intersecting the first direction, the second engaged portion is formed of a second hole penetrating the second arm side wall portion in the first direction, the second engaging portion is provided so as to be insertable into the second hole, and is configured to be in an engaged state with the second engaged portion when inserted into the second hole, and to be in a non-engaged state with the second engaged portion when removed from the second hole, A control panel cabinet configured such that when the second engagement portion is removed from the second hole, the first engagement portion is inserted into the first hole, and when the first engagement portion is removed from the first hole, the second engagement portion is inserted into the second hole.

4. The control panel cabinet according to claim 2, A control panel cabinet, wherein the first arm and the second arm are formed in the same shape.

5. The control panel cabinet according to claim 2, A control panel cabinet, wherein the first arm includes a first rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the first opening / closing mode.

6. The control panel cabinet according to claim 3, the first arm includes a first rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the first opening / closing mode, A control panel cabinet, wherein the first rotation restricting portion is configured as a rotation restricting groove that is a groove recessed from an inner peripheral surface of the first hole.

7. The control panel cabinet according to claim 2, A control panel cabinet, wherein the first arm includes a second rotation regulating portion that regulates further rotation of the opening / closing cover that has reached the open state in the first opening / closing mode when the housing is laid down so that the side wall portion is on the lower side.

8. The control panel cabinet according to claim 2, A control panel cabinet, wherein the second arm includes a third rotation restricting portion that restricts further rotation of the opening / closing cover that has reached the open state in the second opening / closing mode.

9. The control panel cabinet according to claim 3, the second arm includes a third rotation restricting portion that restricts further rotation of the opening / closing cover that has been opened in the second opening / closing mode, A control panel cabinet, wherein the third rotation restricting portion is constituted by a rotation restricting protrusion that bulges from the inner circumferential surface of the second hole.

10. The control panel cabinet according to claim 2, The second arm includes a fourth rotation regulating portion that regulates further rotation of the opening / closing cover that has reached the open state in the second opening / closing mode when the housing is laid down so that the side wall portion is on the lower side.

11. The control panel cabinet according to claim 1, the holding unit further includes a holder mounting rail configured as a DIN rail extending in the first direction and for mounting the second wiring holder to a rear surface of the opening / closing cover, A control panel cabinet, wherein the second equipment holder is configured with a DIN rail extending in the first direction.

12. The control panel cabinet according to claim 11, A control panel cabinet, wherein the holder mounting rail and a DIN rail constituting the second device holder are molded integrally with the opening / closing cover.

13. The control panel cabinet according to claim 1, the side wall portion includes a detachable portion configured to be detachable from another portion of the housing, The holding unit is attached to the detachable portion of the control panel cabinet.

14. The control panel cabinet according to claim 1, The side wall portion includes an outer plate and an inner plate provided on an inner surface side of the outer plate and configured to be detachable from other portions of the side wall portion, The retaining unit is attached to the inner plate of a control panel cabinet.

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