JPH0342704Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a door device that facilitates the installation and removal of a door. More specifically, the present invention relates to a box-shaped door device having a plurality of storage chambers adjacent to each other in the vertical direction.

[Prior art] For example, a control center has a structure in which control units incorporating control devices, etc. are housed in multiple stages, vertical wiring ducts are provided in the vertical direction adjacent to the control units, and a horizontal bus bar room is provided in the top stage. be. A door is provided at the front opening of each unit chamber housing the control unit, and a door is also provided at the front of the vertical wiring duct. These doors are generally attached with retractable hinges as shown in FIG.

FIG. 6 is a perspective view showing the door structure of a conventional control center. 1 is a control unit, 3 is a vertical wiring duct, 4 is a horizontal busbar room, 5, 5a, 5b
... is a unit door, 7 is a duct door, and 8 is a bus room door.

Each unit door 5, 5a, 5b, .

An upper plate 12 at the top of the horizontal busbar chamber 4 provided at the top level extends forward to cover the upper side of the busbar chamber door 8 to form an eaves portion 13. A notch 14 is provided at one end of the eaves section 13 in a portion facing the hinge 9 of the busbar chamber door 8.

According to this structure, when the busbar compartment door 8 is closed, the busbar compartment door 8 is prevented from coming off upward by the eaves 13, so there is no fear of the busbar compartment door 8 falling off. Therefore, each unit door 5, 5a, below the busbar room door 8
5b... and the duct door 7 are also held down by the busbar room door 8, and similarly do not fall off.

When the busbar compartment door 8 is opened, the busbar compartment door 8 is opened by the notch 14 provided at one end of the eaves part 13.
It can be easily removed by pulling it upwards. In addition, each unit door 5, 5a, 5b... can be removed sequentially from the upper side after removing the busbar room door 8, and the duct door 7 can be removed by simply opening it without removing the busbar room door 8. .

[Problems to be solved by the present invention] However, the conventional structure had the following problems.

That is, when it becomes necessary to remove the unit doors below the busbar room door for inspection work, repairs, etc., the unit doors must be removed in sequence starting from the busbar room door above, and the unit doors cannot be removed individually. Therefore,
When removing the bottom unit door, all doors must be removed as a result.
The problem is that work efficiency is poor.

[Means for solving the problems] The purpose of this invention is to improve the above problems by providing the required number of doors with shaft holes in the upper and lower shaft supports, and making the doors rotatable. A bearing arm is provided with a required number of bearing arms to be attached, a bearing pin that is implanted in each bearing arm so as to protrude from either the upper or lower side of the bearing arm, and a hinge shaft that can change the actual length of the shaft portion. Each door is fitted between the bearing arms by inserting one of the shaft holes into the protruding side of the bearing pin,
The other shaft hole is a door device mounted by being pivotally connected by a hinge shaft.

The structure and shape of the hinge shaft are not particularly limited as long as the actual length of the shaft can be easily changed within a certain range. Generally, a C-shaped or U-shaped elastic part is provided in the middle part of an elastic metal shaft, and the actual length of the shaft part is changed by bending the elastic part by grasping it with your hand, etc. The structure is such that it can be attached and detached.

[Example] The present invention will be described in further detail based on an example shown in the drawings. In the figure, the same parts as those explained in FIG. 6 are denoted by the same reference numerals.

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
Figure 2 is a top view of the door support, Figure 3 is A of Figure 2.
-A sectional view.

Each unit door 5, 5a, 5 shown in Figure 1
b... The mounting structures of the duct door 7 and the busbar room door 8 are substantially the same, so the explanation will be given by taking the unit door 5 shown in each drawing as an example.

The unit door 5 is formed into a thin open box with a U-shaped cross section by bending the peripheral edge of a rectangular plate to one side. Both bent long pieces of the unit door 5 serve as shaft supports 51 and 52, and a part of the edge of the lower shaft support 52 is further bent upward at a substantially right angle to become a latching part 53. There is. The hooking part 53 is for storing the elastic part 211 of the hinge shaft 21, which will be described later, inside the unit door 5 so as not to become unstable. Shaft holes 54, 55 are provided at one end of the shaft supports 51, 52.
is provided. Note that the inner diameters of the upper shaft hole 54 and the lower shaft hole 55 are set so that they fit with a bulge 193 of a bearing pin 19a, which will be described later, and the shaft of the hinge shaft 21, respectively. . As a result, in this embodiment, the upper shaft hole 54 has a slightly larger inner diameter than the lower shaft hole 55.

Bearing arms 17, 17a on which the unit door 5 is pivotally supported
is attached to the partition shelf 15. The partition shelf 15 partitions each unit room of the control center into a box shape, and is attached to the side frame 16 of the control center. The front side of the partition shelf 15 is bent downward into an L shape to form a front plate 151, and a mounting hole 152 is formed in the front plate 151.

Bearing arms 17, 17 arranged above and below the opening
A is a plate formed in an L-shape, and is fixed to the back side of the partition shelf 15 by passing through the attachment hole 152. Bearing pins 19 and 19a are implanted in portions of the bearing arms 17 and 17a that protrude from the attachment hole 152 to the outside, respectively.

FIG. 4 is a sectional view showing a state in which the bearing pin is caulked to the bearing arm.

The bearing pins 19, 19a having the shaft hole 191 are
The lower part protrudes from the bearing arms 17, 17a, and the bearing arms 17, 17a are sandwiched and fixed between a caulked portion 192 at the tip and a bulged portion 193 at the intermediate portion.

As shown in FIG. 3, the unit door 5 is constructed by fitting the upper shaft hole 54 into the lower part of the bearing pin 19a and bringing the upper surface of the upper shaft hole 54 into contact with the bulge 193 of the bearing pin 19a. Align the hole 55 with the shaft hole 191 of the bearing pin 19 fixed to the bearing arm 17, and then remove the bearing arm 1.
7 and 17a, and is rotatably supported by inserting the hinge shaft 21 therethrough. In the above, the unit door 5 may be attached with the bearing pins 19, 19a protruding upward, and the shaft holes 54, 55 of the unit door 5 being provided upside down.

The hinge shaft 21 serves as the axis of the unit door 5, and has a C-shaped elastic portion 211 near the lower end, and can be rotated by applying force, such as by gripping the elastic portion 211 with your hand. It has a structure that allows it to be bent and flexed to shorten the actual axial length. The hinge shaft 21 has a bearing pin 1 whose upper end protrudes from the upper shaft hole 54.
9a into the shaft hole 191, and insert the lower end into the lower shaft hole 5.
5 and is inserted into the shaft hole 191 of the bearing pin 19 to pivotally support the unit door 5 on the bearing arms 17, 17a. Note that the hinge shaft 21 is provided with a locking protrusion 212 on the upper part to prevent it from coming into contact with the lower end of the hinge shaft 21a, which is inserted into the shaft hole 191 of the bearing pin 19a from above, and to provide necessary and sufficient repulsion. It is made to be attached to the bearing arms 17, 17a with force. In addition, the hinge shaft 21 is attached such that the elastic part 211 is located inside the above-mentioned latch part 53 of the unit door 5, and when the unit door 5 is opened and closed, it rotates together with the unit door 5 and becomes a hindrance. I try not to let anything happen. Also, at this time, the elastic part 2
The latch portion 213 at the lower end of the unit door 5 is in contact with the inner surface of the shaft support 52 at the bottom of the unit door 5, and the hinge shaft 2
1 is made to stop at an appropriate position within the shaft hole 191.

(effect) Next, the operation of this embodiment will be explained.

To attach the unit door 5, open the upper shaft hole 54.
The bearing pin 19a of the bearing arm 17a located on the upper side
Next, the lower shaft hole 55 is aligned with the shaft hole 191 of the bearing pin 19 of the bearing arm 17 located below, and the hinge shaft 21 is assembled using the spring action of the elastic part 211. Bye.

When removing the unit door 5, grasp the elastic part 211 of the hinge shaft 21, shorten the shaft length, and remove the bearing pin 1.
9 and 19a, then shift the lower part of the unit door 5 and remove the upper shaft hole 54 from the bearing pin 19a. In this way, the door is attached to the support plate by the hinge shaft, which can be easily attached and detached by hand, so that the door can be easily and quickly assembled and removed without using any tools.

Note that when the upper shaft hole 54 is fitted into the bearing pin 19a,
When detaching, it is necessary to tilt the unit door 5 slightly, but it is necessary to leave a slight margin between the inner diameter of the upper shaft hole 54 and the outer diameter of the bearing pin 19a, and also make sure that the outer diameter of the bearing arm 17 is outside the bearing pin 19. By minimizing the space that protrudes into the area, we are trying to avoid any problems.

FIG. 5 is a perspective view of essential parts showing another embodiment of the present invention.

In this embodiment, an L-shaped support plate 55 is provided at the center of the end of the inner wall 50 of the door 5x.
The upper end of the hinge shaft 21 is connected to the upper and lower bearing pins 1.
The support hole 57 of the support plate 56 is inserted into the support hole 57 on the axis connecting the support plates 9 and 19a. Note that the mounting structure of the upper and lower parts of the door 5x is the same as that of the previous embodiment. According to this structure, even if the vertical length of the door 5x such as a unit door or duct door is long, there is no need to set a long hinge shaft 21 that matches the length.
One type of hinge shaft 21 can accommodate doors 5x of various sizes.

[Effects of the invention] The present invention has the above-mentioned configuration. (a) Even if the doors are installed in multiple stages adjacent to each other, the door at any position can be easily attached and detached by inserting and removing the hinge shaft. . Therefore, there is no inconvenience of having to remove the entire door above the door when removing a given door, which is the case with the conventional installation using a pull-out hinge, which saves time and effort.

(b) The shaft support plates, bearing pins, etc. provided between the upper and lower doors have the same structure and can be used for both the upper and lower doors. Therefore, approximately one shaft support is required for each door, and the manufacturing cost can be reduced because the structure and parts are simple to process.

It has the following effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
Figure 2 is a top view of the door support, Figure 3 is A of Figure 2.
-A sectional view, Fig. 4 is a sectional view showing the state in which the bearing pin is caulked to the bearing arm, Fig. 5 is a perspective view of main parts showing another embodiment of the present invention, and Fig. 6 is a conventional control. It is a perspective view showing the door structure of a center. 5: Unit door, 51, 52: Pivot support, 54,
55: Shaft hole, 17, 17a: Bearing arm, 19, 19
a: bearing pin, 21 hinge shaft, 211: elastic part.

Claims (1)

[Scope of Claim for Utility Model Registration] A required number of doors with shaft holes provided in the upper and lower shaft supports, a required number of bearing arms to which the doors can be rotatably attached, and each bearing arm has either the upper or lower bearing arm. A bearing pin that is implanted so as to protrude to one side, and a hinge shaft that can change the actual length of the shaft, each door having one of the shaft holes inserted into the protruding side of the bearing pin. A door device that is fitted between the bearing arms, and the other side of the shaft hole is pivotally connected by a hinge shaft.