JPS6014520B2 - drawer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pull-out device for pulling out internal contents of various devices to the outside of the device.

In recent years, for example, in control devices for information equipment, for the purpose of downsizing and lowering the cost, the integration of elements and parts on printed circuit boards has been increased, printed circuit boards have been made larger, and printed circuit boards have been accommodated. In order to effectively utilize the volume of a printed circuit board rack, many parts such as the front and rear surfaces of the printed circuit board rack, as well as the top, bottom, and side surfaces, are used effectively.

However, on the other hand, problems such as inspection and testing after the assembly of the device is completed, as well as maintenance services after delivery, etc., arise, and the device is not necessarily designed and manufactured rationally, including the difficulty of maintenance. It wasn't. This also applies to control devices and mechanical devices of office equipment, and there is a constraint that the mechanical devices cannot be priced at a higher price, especially if the mechanical devices contain toner made of fine powder or harmful liquids. There were many problems as well. In addition, there is generally a problem with the pull-out device when pulling out built-in items that are heavy, and in conventional devices, in order to make them smaller and lighter, they do not have a pull-out device, leaving problems in maintenance and inspection, or the pull-out device The choice was between making the device larger and more expensive. On the other hand, there are usually various degrees of frequency for maintenance and inspections, such as daily end-of-day inspections, weekly inspections every week, monthly inspections, and annual periodic inspections. , the frequency of inspection is often different, but with conventional equipment, within a single device,
The basic structure of the drawer device was not changed in response to the frequency of the above-mentioned inspections. The present invention has been made in view of the above circumstances, and its purpose is to make the device easier to perform maintenance and inspection work by changing the basic structure of the drawer device depending on the frequency of inspection of the internal components of the device or the weight. The aim is to reduce the size, weight, and cost without causing any problems.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram for explaining a permanently installed drawer device according to an embodiment of the present invention, FIG. 1 a is a front view, and FIG. 1 b
is a side view showing a state in which a portion of one of the two printed circuit board racks is pulled out. Figure 1c
2 is an enlarged cross-sectional view of a stopper and its surroundings that regulate the drawn-out position of the printed circuit board rack. In FIGS. 1a and 1b, 1 is a sparrow body, 2 is a printed circuit board rack (hereinafter referred to as a rack), and 3 is a power supply device for a control panel. The permanent pull-out device 4 includes a fixed rail 41 integrally attached to the cliff body 1;
The movable rail 42 is integrally attached to the rack 2, and the movable rail 42 is connected to the fixed rail 41.
By sliding it on the top, the rack 2 can be moved in the directions of the arrows x and X'. The length that can be moved, that is, the operating length of the permanently installed drawer device 4.In the evening, on the arrow × direction side of the rack 2, there is a printer and frequency meter for recording the end of work, a check terminal for weekly inspections, and a system and numerical revision. This is the length related to the frequently pulled out portion 2a on the front side of the rack 2, where objects that are frequently pulled out and worked on are installed in the so-called rack 2, such as replaceable logic element bodies. It is also the length that allows the rack 2 to be stably held on the fixed rail 41 when it is pulled out. The operating length is defined by a stopper 43 as shown in FIG. 1c.

The stopper 43 is a protrusion 4 of the rack 2 made of an L-shaped fitting integrally attached to the bottom of the rack 2 on the rack 2 side.
3a, pin 43b as the pupil body 1 side, pin 43b to the case 1
A holder 43c attached to the side, a spring 43d inside the holder 43c that constantly raises the pin 43b, a ring 43e pivoted on the shaft of the pin 43b to apply the force of the spring 43d to the pin 43b, etc. It consists of The stopper 43 is configured as described above, and the rack 2 normally stops when it has been pulled out by the length in the direction of the arrow X, and cannot be pulled out any further.

For this reason, it is sufficient for the permanently installed drawer device 4 to have a simple structure that allows for high draw frequency and relatively short draw distance. Next, since the frequency of withdrawal is low, about once a year, and the withdrawal distance is long, a permanent withdrawal device 4 is required.
Now, an assembly-type drawer device that cannot be pulled out, but can be assembled and pulled out as needed, will be explained with reference to the drawings.

Figure 2 shows an assembly-type drawer and a state in which the rack 2 is pulled out of the case 1 using the assembly-type drawer. Figure 2a is a side view, and Figure 2b is an enlarged view of the main parts of the side. The partially sectional view, FIG. 2c, is an enlarged view of the main part on the left side of the front, and the right side is symmetrical with the left side. In FIG. 2, 51 is a rail, 54 is a member, and as shown in FIG. 2b, the housing 1 of the rail 51 is
The side end is fitted and connected to the shaft 52a of a pin 52 pivotally connected to the sparrow body 1, and the other end is connected to the shaft 52a of the pin 52.
There is an arm 51a integrally pivotally connected to. This arm 51a has a member 54 which is rotatably caulked and connected by a pin 53, and one end of the member 54 is connected to the pin 52 which is connected to one end of the rail 51 which is pivoted below the painted body 1. It is constructed so as to be connected to another pin 52 having the same shape. Therefore, the housing 1, the shield 51, the arm 51a,
The pins 52, 53, members 54, etc. constitute a strong beam against forces from above. As is clear from the above description, the connection between the pin 52 on the weight body 1 side, the seal 51, and the member 54 is achieved through the small hole 55 of the Daruma-shaped hole 55 provided in the rail 51 and the member 54 in the ball 52a of the pin 52. This is achieved by the head portion 52b of the pin 52 preventing the rail 51 and member 54 from moving in the direction of the arrow X. The larger hole of the Daruma-shaped hole 55 is for connecting by first inserting the larger part of the Daruma-shaped hole 55 into the head 52b of the pin 52 and then dropping it downward in the pre-step for connection. It is. When pulling the rack 2 out of the body 1, after setting up the assembly type drawer device 5 as described above, insert the pin 43b of the stopper 43 shown in FIG. After lowering the rack 2 to a position where it does not hit the protrusion 43a and pulling it out using the permanent drawer device 4 without stopping the rack 2 by the stopper 43, move the rack 2 further on the drawer rail 51 in the direction of arrow
As shown in FIG. 2a, it is drawn out from the coating body 1.

Note that the rail 51 is provided with a stopper portion 51b, which can be stopped by supporting the movable rail 42 pivotally connected to the rack 2, and prevents the rack 2 from accidentally falling. There is. Further, depending on the weight of the rack 2, it is possible to safely pull out a heavy object by adding a guard (not shown) to the rail 51 or member 54 as necessary. Regarding storage, various methods such as storage outside the cliff body or storage within the lotus body can be considered, but if the rail 51 and member 54 are folded around the pin 53), it can be made into a convenient shape for storage. . In the embodiment, a sliding mechanism was used to move the movable rail 4 while contacting the fixed rail 41, but a so-called rolling mechanism using rollers, balls, etc. may also be used.

Furthermore, for the connection between the protrusion 1 and the seal 51, and between the bell body 1 and the member 54, it is possible to conventionally use mechanisms using various mechanical elements, such as a pivot connection using a key stud such as a bolt. Furthermore, when pulling out a particularly heavy device such as a power source containing a transformer, there is a risk that the entire body including the weight body 1 will topple in the drawing direction. The member shown in the figure may be brought into contact with the floor. . As detailed above, according to the present invention, by providing a permanently installed drawer device for frequently used drawers and an assembly type drawer device that can be assembled as needed for less frequently used drawers,
Since the built-in contents can be pulled out appropriately to the required position using a relatively simple structure of the pull-out device, the effect is extremely large.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for explaining a permanently installed drawer device according to an embodiment of the present invention, FIG. 1 a is a front view, and FIG. 1 b
Figure 1c is a side view showing a part of one of the three printed circuit board racks pulled out to the outside. An enlarged cross-sectional view of FIG. 2 shows the assembly-type drawer device and the state in which the rack 2 is pulled out of the cliff body 1 using the assembly-type drawer device, FIG. 2A is a side view, and FIG. 2B 2 is an enlarged partial sectional view of the main part on the side, and FIG. 2c is an enlarged front view of the main part on the left side. 1... Weight body, 2... Printed circuit board rack, 2a... Frequently pulled out part, 3...
...Power supply device, 4...Permanent drawer device, 41
......Fixed rail, 42...Movable rail, 43...Stopper, 43a...Protrusion, 43b...Pin, 43c...・Holding body,
43d...Spring, 5...Separable drawer device, 51...Rail, 51a...Arm, 51b...Stopper, 52, 53...Pin, 52a...Shaft, 52b...
...Head, 54... ...Member o Figure 1 a 1
Figure b Figure 1 c Figure 2 a Figure 2 b Figure 2 c

Claims (1)

[Claims] 1. A permanent drawer device consisting of a fixed rail installed inside the case in order to pull out only the frequently drawn parts that are concentrated on the front side of the rack that is pulled out from inside the case, and an extension of the fixed rail outside the case. The movable rail provided on the rack is engaged with the fixed rail of the permanently installed drawer device to perform high-frequency drawing, and the movable rail is connected to the prefabricated drawer device. A drawer device characterized in that the rack is configured so that the entire rack can be pulled out of the housing as needed by engaging with the rail of the rack.