阅读说明：本技术 配电盘壳体 (Distribution board case ) 是由 服部太辅 大庭进一 于 2018-12-20 设计创作，主要内容包括：本发明提供一种配电盘壳体,在设置有向上方进行打开操作的门板时,即使铰链部设为不需要其他构件的简易构造,门板也不易从壳体脱离。设置于壳体(1)的前表面的门板(4)在上端一体地形成有用于铰接于壳体的旋转轴(5),能够在上下方向上对门板进行开闭操作,另一方面,在壳体(1)一体地设置有轴固定部(6),其具备对旋转轴进行轴固定的轴孔(6b),进一步,在旋转轴设置有凸缘状突起(5d),并在轴固定部的规定部位设置有与凸缘状突起卡合的卡合突起(6d),在进行将旋转轴插入于轴孔的操作时,使凸缘状突起移动至越过卡合突起,并且凸缘状突起在越过的位置处与卡合突起抵接而防止旋转轴从轴孔脱落。(The invention provides a distribution board casing, when a door panel which is opened upwards is arranged, even if a hinge part is a simple structure without other components, the door panel is not easy to be separated from the casing. A door plate (4) arranged on the front surface of a shell (1) is integrally provided with a rotating shaft (5) for hinging with the shell at the upper end, the door plate can be opened and closed in the vertical direction, on the other hand, the shell (1) is integrally provided with a shaft fixing part (6) which is provided with a shaft hole (6b) for fixing the rotating shaft, further, a flange-shaped projection (5d) is arranged on the rotating shaft, an engaging projection (6d) engaged with the flange-shaped projection is arranged at a specified position of the shaft fixing part, when the rotating shaft is inserted into the shaft hole, the flange-shaped projection moves to pass over the engaging projection, and the flange-shaped projection is abutted with the engaging projection at the position of passing over to prevent the rotating shaft from falling off from the shaft hole.)

1. A cabinet for an electrical panel, wherein a door panel is provided on the front surface of the cabinet, an opening formed on the front surface of the cabinet is closed by the door panel,

the electrical panel cabinet is characterized in that it comprises,

the door plate is integrally formed with a rotating shaft at an upper end thereof to be hinged to the housing, and can be opened and closed in the vertical direction,

on the other hand, a shaft fixing portion having a shaft hole for fixing the rotating shaft is integrally provided in the housing,

further, a flange-shaped projection is provided on the rotary shaft, and an engaging projection that engages with the flange-shaped projection is provided at a predetermined position of the shaft fixing portion,

when the rotary shaft is inserted into the shaft hole, the flange-like projection is moved to pass over the engagement projection, and the flange-like projection abuts against the engagement projection at the passing position, thereby preventing the rotary shaft from falling out of the shaft hole.

2. The panelboard of claim 1, wherein,

the case has a box-shaped case body with an open front surface, and a front panel having the opening and closing the front surface of the case body,

the shaft fixing part is formed on the back surface of the front panel.

3. The panelboard of claim 2, wherein,

the front panel is provided with a guide portion that guides the rotating shaft inserted from the front to the shaft fixing portion.

4. The panelboard of claim 3, wherein,

the front panel has an insertion opening for the rotary shaft to be inserted from the front directly below the shaft fixing portion, the guide portion is an arc-shaped guide path formed in the inner portion of the insertion opening,

the rotating shaft inserted from the front is guided by the shaft fixing portion directly above the guide path.

5. The panelboard of any of claims 1 to 4, wherein the first and second panels are configured to be connected together,

a protrusion is provided at a predetermined portion of a side surface of the rotary shaft, and a locking protrusion is provided at the shaft fixing portion, and when the door panel is rotated upward by an opening operation, the protrusion is locked to the locking protrusion in a state of passing over the locking protrusion, thereby preventing a closing operation of the door panel.

Technical Field

The present invention relates to a cabinet of a distribution board that houses a circuit breaker and the like, and more particularly to a distribution board cabinet having a door panel on a front surface thereof.

Background

A switchboard cabinet that accommodates a plurality of circuit breakers such as a main circuit breaker and a branch circuit breaker often exposes an operation handle from the cabinet to facilitate operation of the circuit breaker. In order to prevent dust and the like from adhering to a charging portion and an electric wire arranged around the breaker and causing electric leakage and the like, it is necessary to close such a switchboard cabinet, and therefore, an opening portion for exposing only the operation handle is provided on the front surface of the cabinet.

A distribution board case having an opening portion on a front surface thereof as described above has become popular as follows: the opening including the operation handle is entirely closed in order to prevent dust and the like from entering the case and to provide a door separately to hide the operation handle in consideration of the appearance.

The door is configured to open upward, and even if the door is provided, the door does not interfere with the operation of the distribution board provided above the wall surface (see, for example, patent document 1).

Disclosure of Invention

Problems to be solved by the invention

However, the hinge provided between the door panel that opens upward and the housing is a member made of metal such as a shaft or a cam member, and the hinge is assembled to both the door panel and the housing, which results in a high-cost structure.

In order to solve this problem, a hinge member such as a hinge shaft or a bearing is integrally formed with the housing and the door, but in a simple structure, the door attached to the housing is easily detached, and in a case where the door is not easily detached, the door is difficult to assemble, and a complicated structure is required to solve this problem. Therefore, it is difficult to reduce the components of the hinge portion.

In view of the above-described problems, it is an object of the present invention to provide a distribution board cabinet in which, when a door panel that is opened upward is provided, the door panel is less likely to fall off from the cabinet even if the hinge portion has a simple structure that does not require any other member.

Means for solving the problems

In order to solve the above-mentioned problems, the invention according to claim 1 is a distribution board casing having a door panel provided on a front surface of a casing, and an opening portion formed on the front surface of the casing is closed by the door panel, wherein the door panel is integrally provided with a rotating shaft for being hinged to the casing at an upper end thereof, and the door panel can be opened and closed in a vertical direction, and the casing is integrally provided with a shaft fixing portion having a shaft hole for fixing the rotating shaft, and further, the rotating shaft is provided with a flange-like projection, and an engaging projection for engaging with the flange-like projection is provided at a predetermined position of the shaft fixing portion, and when the rotating shaft is inserted into the shaft hole, the flange-like projection is moved to pass over the engaging projection, and the flange-like projection is brought into contact with the engaging projection at a position where the flange-like projection passes over, thereby preventing the rotation shaft from falling off the shaft hole.

According to this configuration, since the member for hinging the door panel to the housing is formed integrally with the door panel and the housing, respectively, no other member for forming a hinge is required, and the structure can be made at low cost. Even if the hinge portion is formed by inserting the rotary shaft formed in the door panel into the shaft hole formed in the housing, the flange-like projection provided on the rotary shaft is engaged with the engaging projection provided on the shaft fixing portion, so that the hinge state is not easily disengaged, and the door panel can be stably opened and closed with a simple structure.

The invention according to claim 2 is characterized in that, in addition to the configuration described in claim 1, the housing includes a box-shaped housing main body having an open front surface, and a front panel having an opening and closing the front surface of the housing, and the shaft fixing portion is formed on a back surface of the front panel.

According to this configuration, since the shaft fixing portion is formed on the back of the front panel, it is preferable in terms of appearance because it is hidden from the front.

The invention according to claim 3 is characterized in that, in addition to the configuration described in claim 2, a guide portion for guiding the rotation shaft inserted from the front to the shaft fixing portion is provided on the front panel.

According to this configuration, even if the shaft fixing portion is formed on the back portion of the front panel hidden from the front, the rotation shaft can be guided by the guide path, and therefore, the door panel can be easily attached.

The invention according to claim 4 is characterized in that, in addition to the configuration described in claim 3, the front panel has an insertion opening into which the rotary shaft is inserted from the front directly below the shaft fixing portion, the guide portion is an arc-shaped guide path formed in a back portion of the insertion opening, and the rotary shaft inserted from the front is guided to the shaft fixing portion directly above by the guide path.

According to this configuration, the rotating shaft inserted into the insertion port is guided by the arc-shaped guide path and guided by the shaft fixing portion directly above, and therefore the door panel can be easily attached.

The invention according to claim 5 is characterized in that, in addition to the structure according to any one of claims 1 to 4, a projection is provided at a predetermined portion of a side surface of the rotating shaft, and a locking projection is provided at the shaft fixing portion, and when the door panel is rotated upward by an opening operation, the projection is locked to the locking projection in a state of being over the locking projection, thereby preventing a closing operation of the door panel.

According to this configuration, the door panel in the open state is held in the open state by the projection provided on the rotary shaft and the locking projection provided on the shaft fixing portion, and therefore, it is not necessary to assemble another holding mechanism.

Effects of the invention

According to the present invention, even when the hinge portion is formed by inserting the rotary shaft formed in the door panel into the shaft hole formed in the housing, the door panel can be opened and closed in a stable state in which the hinge state is not easily disengaged.

Drawings

Fig. 1 is a perspective view showing an example of a distribution board cabinet according to the present invention, in which fig. 1 (a) shows a state where a door panel is closed, and fig. 1 (b) shows a state where the door panel is opened.

Fig. 2 is a front view of the front panel.

Fig. 3 shows a cross section taken along line a-a of fig. 2, where fig. 3 (a) is an overall view and fig. 3(B) is an enlarged view of a portion B.

Fig. 4 is a cross section taken along line a-a in a state where the door panel is closed, where fig. 4 (a) is an overall view and fig. 4 (b) is an enlarged view of a portion C.

Fig. 5 is a perspective view illustrating the door panel and the front panel being separated from each other, in which fig. 5 (a) is the front panel and fig. 5 (b) is the door panel.

Fig. 6 is an enlarged view of a portion D of fig. 5.

Fig. 7 is a rear perspective view of the front panel.

Fig. 8 is an enlarged view of a portion E of fig. 7.

Fig. 9 is an explanatory view of the attachment of the door panel to the front panel, where fig. 9 (a) is a perspective view of the whole, and fig. 9 (b) is an enlarged view of the F portion.

Fig. 10 is an explanatory view of the door panel attached to the front panel, where (a) in fig. 10 is a rear view of the front panel with the rotary shaft disposed directly in front of the shaft hole, and (b) in fig. 10 is an enlarged view of a portion G.

Fig. 11 is an explanatory view when the installation of the door panel is completed, in fig. 11, (a) is a rear view of the door panel, and in fig. 11, (b) is an enlarged view of a portion H.

Description of the reference numerals

1: a case (switchboard case); 2: a housing main body; 3: a front panel; 4: a door panel; 5: a rotating shaft; 5 a: a connecting shaft; 5 c: a protrusion; 5 d: a flange-like protrusion; 6: a shaft fixing portion; 6 a: an accommodating portion; 6 b: a shaft hole; 6 c: a locking protrusion; 6 d: a snap-fit protrusion; 7: a connecting member; 8: a guide path (guide portion); 31: an opening part; 33: an insertion opening.

Detailed Description

Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. Fig. 1 shows an example of a distribution board cabinet according to the present invention, where (a) in fig. 1 is a perspective view of a door panel being closed, and (b) in fig. 1 is a perspective view of the door panel being opened. A distribution board cabinet (hereinafter, simply referred to as "cabinet") 1 is configured by a box-shaped cabinet main body 2 and a front panel 3, wherein the cabinet main body 2 has a back surface and a peripheral side surface, and a front surface is open, the front panel 3 is disposed on the front surface of the cabinet main body 2 to close the front surface of the cabinet main body 2, and the front panel 3 is provided with a door panel 4 whose upper end is hinged so as to be openable and closable.

The case body 2 is formed by bending a steel plate, and a knock-out hole 21 is formed in a side surface, and the knock-out hole 21 can easily form a hole for inserting and removing an electric wire connected to a breaker or the like (not shown) accommodated therein.

The front panel 3 has a recessed region 32 recessed at the center by a depth of one step. The recessed area 32 is formed with an opening 31 for exposing an operation handle (not shown) of the circuit breaker housed in the case body 2, and the recessed area 32 forms an operation handle housing portion. Further, the door panel 4 is provided with: the concave region 32 is closed including the opening 31.

Fig. 2 is a front view of the front panel 3 after opening the door panel 4, and fig. 3 and 4 are cross-sections taken along line a-a of fig. 2. Fig. 3 (a) and 4 (a) are overall views, fig. 3(B) is an enlarged view of a portion B, and fig. 4 (B) is an enlarged view of a portion C. Fig. 4 shows a state where the door panel 4 is closed.

Fig. 5 to 8 are explanatory views of the structure of the hinge portion, fig. 5 is a view showing the door panel 4 and the front panel 3 separated from each other, fig. 6 is an enlarged view of a portion D of fig. 5, fig. 7 is a rear perspective view of the front panel 3, and fig. 8 is an enlarged view of a portion E of fig. 7.

As shown in fig. 3 and 4, the upper left and right portions of the door panel 4 are hinged to the front panel 3, and the door panel 4 can close and open the recessed area 32 including the opening 31. As shown in fig. 5, a rotating shaft 5 constituting one of the hinge portions is formed at the upper end of the door panel 4, and as shown in fig. 7, a shaft fixing portion 6 constituting the other of the hinge portions is formed at the back of the front panel 3. Fig. 6 is an enlarged view of the rotating shaft 5, and fig. 8 is an enlarged view of the shaft fixing portion 6.

Hereinafter, the hinge portion will be specifically described. As shown in fig. 6, the rotary shaft 5 includes a connecting shaft 5a and an extension shaft 5b, wherein the connecting shaft 5a is connected to the shaft fixing portion 6 of the front panel 3, and the extension shaft 5b is continuous with the connecting shaft 5a and integrally formed on the same shaft, thereby reinforcing the connecting shaft 5 a. A projection 5c is formed at a predetermined portion of the side surface of the extended shaft 5b, and the projection 5c is locked to a locking projection 6c formed on a shaft fixing portion 6 described later.

As shown in fig. 6, the rotary shaft 5 is connected to the door panel 4 via a pair of connecting members 7 and is formed integrally with the door panel 4. As shown in the sectional views of fig. 3 and 4, the coupling member 7 is bent into a U-shape so that the rotary shaft 5 can easily enter the back of the front panel 3 from an insertion opening 33 of the front panel 3, which will be described later.

The portion of the rotating shaft 5 where the coupling member 7 is formed is reinforced in a flange shape, and one of the flange-shaped reinforcing portions adjacent to the coupling shaft 5a is formed to have a tapered surface T. The one flange-like reinforcing portion constitutes a flange-like projection 5d, and the flange-like projection 5d is locked to an engagement projection 6d formed on a shaft fixing portion 6 of the front panel 3 described later.

The shaft fixing portion 6 is formed on the back surface of the front panel 3, and has a housing portion 6a for housing the rotary shaft 5 as shown in fig. 8. A shaft hole 6b into which the coupling shaft 5a is inserted and fixed is provided on a side surface of the housing portion 6 a. Further, a locking projection 6c and an engaging projection 6d are formed on a wall surface of the accommodating portion 6a in the vicinity of the extension shaft 5b of the rotary shaft 5. The locking projection 6c is disposed to lock the projection 5c of the rotation shaft 5, and the engaging projection 6d is disposed to engage the flange-shaped projection 5 d.

On the other hand, as shown in fig. 5, an insertion opening 33 into which the rotary shaft 5 is inserted is formed in a portion directly below the shaft fixing portion 6 of the front panel 3, and a guide passage 8 for guiding the rotary shaft 5 to the back of the front panel 3 is formed from the back of the insertion opening 33 toward the shaft fixing portion 6. As shown in fig. 8, the guide passage 8 is formed in an arc shape and is formed to guide the inserted rotary shaft 5 to the shaft fixing portion 6. The coupling member 7 formed in a U shape of the rotary shaft 5 inserted from the front into the insertion port 33 engages with the guide passage 8 and smoothly moves to the shaft fixing portion 6.

In this way, the coupling shaft 5a formed at the end of the rotating shaft 5 disposed in the housing portion 6a of the shaft fixing portion 6 is inserted into the shaft hole 6b, thereby forming a hinge and attaching the door panel 4.

Fig. 9 to 11 are views showing the procedure of mounting the door panel 4, and the mounting of the door panel 4, and the operation of the locking projection 6c and the engaging projection 6d will be specifically described with reference to these views. Fig. 9 is an explanatory view of the attachment of the door panel 4 to the front panel 3, fig. 9 (a) is an overall view immediately before the attachment, and fig. 9 (b) is an enlarged view of a portion F. Fig. 10 (a) is a rear view of the front panel 3 with the rotary shaft 5 disposed directly in front of the shaft hole 6b, and fig. 10 (b) is an enlarged view of the portion G. Fig. 11 is an explanatory view when the installation of the door panel 4 is completed, where (a) in fig. 11 is a rear view of the front panel 3, and (b) in fig. 11 is an enlarged view of a portion H.

As shown in fig. 9, the rotating shaft 5 is inserted into the insertion port 33 so that the door panel 4 is substantially horizontal. However, for convenience of explanation, the angle of the door panel 4 is set to be shallow in fig. 9. After the insertion, the door panel 4 is rotated to a position where the opening 31 is closed, and thereby the rotary shaft 5 is raised in the guide path 8 and moved to the back of the front panel 3.

The state after the movement is the state shown in fig. 10, the rotary shaft 5 enters the housing portion 6a of the shaft fixing portion 6, and the shaft hole 6b is disposed on the axis of the rotary shaft 5. Thereafter, when the door panel 4 is slid rightward, the coupling shaft 5a is inserted into the shaft hole 6b, and the door panel 4 is hinged as shown in fig. 11.

In fig. 11, the door panel 4 is viewed from the back, and therefore, the door panel 4 slides to the left.

During this sliding operation, the flange-like projection 5d is moved to pass over the engaging projection 6d, and the coupling shaft 5a is held in a state inserted into the shaft hole 6b as shown in fig. 11 (b). The surface of the engaging projection 6d with which the connecting shaft 5a is engaged when inserted is formed as a tapered surface T, and the flange-shaped projection 5d and the engaging projection 6d which are brought into contact when the connecting shaft 5a is inserted into the shaft hole 6b can be moved over the engaging projection 6d with a small force by the tapered surfaces T provided on both sides.

On the other hand, the surfaces of the flange-like projection 5d and the engaging projection 6d which come into contact from opposite directions after passing over each other are formed to have surfaces orthogonal to each other in the sliding direction, and a large force is required to pass the flange-like projection 5d over the engaging projection 6d in this direction. As a result, the hinge portion formed can be opened and closed in a stable state without dropping the rotary shaft 5.

When the hinged door panel 4 is opened and turned by about 90 ° to be substantially horizontal, the projection 5c of the rotary shaft 5 moves to pass over the locking projection 6c, and the state shown in fig. 4 (b) is shifted to the state shown in fig. 3 (b).

When the door panel 4 is to be turned downward by the weight of the door panel 4 and closed after the projection 5c passes over the locking projection 6c, the projection 5c is locked to the locking projection 6c as shown in fig. 3(b), and the door panel 4 is prevented from turning downward and is maintained in the opened state.

Since the member for hinging the door panel 4 to the housing 1 is formed integrally with the door panel 4 and the housing 1, no other member for forming a hinge is required, and the structure can be made at low cost. Even if the hinge portion is formed by inserting the rotary shaft 5 formed in the door panel 4 into the shaft hole 6b formed in the housing 1, the flange-like projection 5d provided on the rotary shaft 5 and the engaging projection 6d provided on the shaft fixing portion 6 are engaged with each other, so that the hinge state is not easily disengaged, and the door panel 4 can be stably opened and closed with a simple structure.

Further, since the shaft fixing portion 6 is formed on the back of the front panel 3, it is preferable to hide the front side from the external appearance, and even if the shaft fixing portion 6 is formed on the back of the front panel hidden from the front side, the rotation shaft 5 can be guided by the guide passage 8, and thus the door panel 4 can be easily attached.

Further, since the rotary shaft 5 inserted into the insertion port 33 is guided by the arc-shaped guide passage 8 and guided to the shaft fixing portion 6 directly above, the door panel 4 can be easily attached.

Further, the door panel 4 after the opening operation is held in the opened state by the projection 5c provided on the rotary shaft 5 and the locking projection 6c provided on the shaft fixing portion 6, and therefore, it is not necessary to assemble another holding mechanism.

In the above embodiment, the casing 1 includes the casing main body 2 having a box shape with an open front surface and the front panel 3 closing the open front surface, and the portion to be assembled with the equipment is formed in the box shape.

Although the engaging projection 6d is provided only on one of the pair of shaft fixing portions 6, the engaging projection 6d may be provided on both of them.

Industrial applicability of the invention

The above embodiments have been described mainly with respect to a distribution board housing breakers for forming branch circuits, but may also be applied to an information distribution board housing information equipment.