JPS6320548Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Technical field of the invention This invention describes a sheet pull-out handle (hereinafter referred to as "handle for pulling out a sheet") which is a tool for pulling out a sheet (printed board unit) on which circuit components such as a communication device are mounted from a block or shelf. (also simply abbreviated as "handle").

(2) Background of the technology In recent years, the packaging of communication devices and the like has tended to become more and more densely packed, and connectors that make electrical connections between sheets and blocks inevitably have a large number of terminals. Connectors with a large number of terminals and good electrical contact generally require a very large force to be inserted and removed. For this reason, it is very difficult to insert and pull out the sheet by hand when testing or maintaining the communication device. Particularly in the case of sheet extraction, it is very difficult because the sheets are housed in the blocks at very narrow intervals and it is difficult to reach by hand.

Accordingly, various handles have been proposed or put into practical use that allow the sheet to be easily pulled out from the block with a small force. However, the sheet puller handles that have been commonly used in the past have the following problems, and countermeasures are desired.

(3) Prior Art and Problems A typical example of a conventional sheet pull-out handle is shown in Figures 1 to 3 of the drawings. Figure 1 is a side view showing the seat and block together, and Figure 2 is a side view of the handle. 1
FIG. 3 is an enlarged view of part A in the figure, and a partial sectional view taken from arrow B in FIG. 2. In the figure, the reference numeral 1 indicates a sheet, and the sheet 1 is inserted into the block 2 from the front side (left side in the figure) in the direction of arrow X and accommodated therein.
Also, numeral 3 indicates the back panel of block 2,
Reference numerals 4 and 5 indicate connectors for electrical connection provided on the seat 1 and the back panel 3, respectively. Reference numeral 6 designates a sheet pulling handle used to pull out the sheet 1 from the block 2 in the direction of arrow Y.

The shaft 6a of the handle 6 is generally made by bending a metal round bar, and as shown in FIGS. 2 and 3, the handle shaft 6a has a pedestal 7 made of an insulating material at its tip, and a pin on its side. 8 protrudes perpendicularly to the sheet pulling direction Y. On the other hand, a hole 1a is formed on the front edge side of the sheet 1. Seat hole 1a
When the pin 8 of the handle 6 is inserted from the side and the handle 6 is pulled in the direction of arrow Y, the seat connector 4 is removed from the back panel connector 5, and the seat 1 is connected to the block 2.
be extracted from. Incidentally, a portion of the handle 6 indicated by reference numeral 9 indicates a guide for facilitating the insertion of the pin 8 into the hole 1a of the seat.

However, in such a conventional handle 6,
Considering the versatility with respect to differences in the diameter of the hole 1a of the seat and the distance from the front edge of the sheet, and the ease of inserting and removing the pin 8 into the hole 1a, the pin 8 is loosely fitted into the hole 1a, and the guide 10 and the front edge of the sheet are Generally, the structure is such that there is a gap between the two. That is, the sheet 1 basically has a structure in which it is very easy to come off from the handle 6. Therefore, if sheet 1 is carelessly pulled out from block 2, sheet 1
There was a problem in that the seat could easily come off the handle 6 and fall to the floor, damaging the circuit components of the seat.

(4) Purpose of the invention In view of the above-mentioned prior art, it is an object of the present invention to provide a handle for pulling out a sheet that can prevent the sheet from falling off when the sheet is pulled out.

(5) Structure of the invention Generally speaking, the sheet pull-out handle according to the invention has a pair of upper and lower legs whose tips can come into contact with the front end surfaces of the upper and lower frames of the block, and can be pressed and held against the block. a substantially U-shaped holding part; a pull part attached to the leg part of the holding part so as to be movable back and forth within a certain distance range along the sheet pulling direction;
The tip has a pin that protrudes perpendicularly to the sheet pulling direction and can be inserted into a hole formed at the front edge of the sheet.
The seat puller is also equipped with a sheet puller attached to the handle portion so that its mounting position in the vertical direction can be adjusted, and the pin of the seat puller is inserted into the hole in the seat to press and hold the holding portion against the block. The seat can be pulled out a certain distance from the block by pulling the handle.

(6) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

An embodiment of the sheet pull-out handle according to the present invention is shown in FIGS. 4 and 5, where FIG. 4 is a side view and FIG. 5 is a side view taken along the arrow line C--C in FIG. 4. FIG. The sheets and blocks are as shown in FIG. 1, and some of them are shown with imaginary lines in FIGS. 4 and 5.

In the figure, reference numeral 20 indicates a handle according to the present invention. This handle 20 as a whole includes a holding part 21 and a pull part 2.
2, and a sheet puller 23. The holding part 21 has a substantially U-shaped shape having a pair of upper and lower legs 25, and is made of a suitable material such as metal such as aluminum or plastic. The tips of the leg portions 25 are shaped so that they can come into contact with the front end surfaces 2a of the upper and lower frames of the block 2, so that the holding portion 21 can be pressed against the block 2 by hand from the front side in the direction of the arrow X. It can be held fixed.

The pull part 22 is a single plate-like member with a hole 26 for inserting a finger, and its upper and lower edges are connected to the holding part 21.
The leg portion 25 is slidably fitted into a guide groove 27 formed on the inner surface of the leg portion 25 . Thereby, the pull portion 22 is movable for a certain distance in the front and back direction along the guide groove 27, that is, along the sheet pull-out direction Y.

The extractor 23 has a base 28 and a pin 29 insertable into the hole 1a of the sheet 1 (see FIGS. 2 and 3) at its tip. Note that the pedestal 28 and pin 29 are the same as the conventional ones shown in FIGS. 2 and 3, so detailed explanations will be omitted. Pulling tool 2
3 has a mounting hole 30 formed in the handle portion 22, and is mounted thereto using bolts and wing nuts 31.
In addition, the extraction tool mounting hole 30 is a vertically long hole,
If the vertical position of the hole 1a of the sheet 1 is different, the vertical position of the puller 23 can be adjusted to match the position of the hole 1a. in this case,
The mounting hole 30 is formed with a semicircular recess into which a bolt can be engaged, and the rear end of the extraction tool 23 is bent into an L shape to engage the pull part 22, so once positioned, the wing nut can be tightened. After tightening 31, the extraction tool 23 is securely fixed without rotating.

Next, a method of pulling out the sheet 1 from the block 2 using the above-mentioned handle 20 will be explained.

First, as shown in the figure, the holding portion 21 is pressed against the block 2 to hold the handle 20, and the pin 29 of the extractor 23 is inserted into the hole 1a of the sheet 1. in this case,
At first, move the handle 20 slightly to the side (5th position) with respect to the seat 1.
When the pin 29 is pushed into the position shifted upward in the figure, and then moved sideways (downward in figure 5) until the handle 20 is aligned with the sheet 1, the pin 29 is pushed into the hole 1.
inserted into a.

Next, when the handle part 22 is pulled in the direction of the arrow Y while the holding part 21 is firmly held on the block 2, the handle part 22 moves to a position 22' (partially shown by an imaginary line) where it hits the holding part 21. . As a result, the sheet 1 is also pulled out by a distance equal to the moving distance l of the pull member 22 to a position 1' partially indicated by the imaginary line. Therefore, if the distance l is set to be larger than the distance required for inserting and removing the connectors 4 and 5 (see FIG. 1), the seat 1 will be separated from the back panel 3 and can be freely pulled out.

Thereafter, by removing the pin 29 from the hole 1a and removing the handle 20 from the sheet 1, the sheet 1 can be easily pulled out from the block 2 by hand.

As described above, the sheet pulling operation by the handle 20 is limited to the connector disconnection stroke that requires a particularly large force, and the sheet 1 is not completely pulled out from the block 2 and most of the sheet is pulled out from the block 2.
It is kept in a state that remains inside. Therefore, pedestal 2
Even if the seat 8 and the pin 29 have a structure in which the seat easily comes off as in the conventional case, there is no fear that the seat will fall off carelessly.

In the above embodiment, the moving distance of the pull portion 22, that is, the distance l for pulling out the sheet 1 is the distance l of the pull portion 22.
The guide groove 27 can be arbitrarily determined depending on the shape and dimensions of the guide groove 27 and the length of the guide groove 27.

Further, a notch 32 is formed at the tip of the leg portion 25 of the holding portion 21 so that the front edge of the sheet can be escaped when the sheet is pulled out.

(7) Effects of the invention As described above, the sheet pull-out handle according to the present invention can prevent the sheet from accidentally falling off when the sheet is pulled out, and is simple in structure and easy to operate, making it practical. This has a great effect.

[Brief explanation of the drawing]

Figure 1 is a side view showing an example of a conventional sheet puller handle together with the sheet and block, Figures 2 and 3 are enlarged views of the main parts of the conventional example in Figure 1, and Figure 4 is a sheet puller according to the present invention. FIG. 5 is a side view of one embodiment of the handle, and is a sectional view taken along the arrow line CC in FIG. 4. DESCRIPTION OF SYMBOLS 1... Seat, 1a... Hole in the seat, 2... Block, 3... Back panel, 4, 5... Connector, 20... Handle for pulling out the sheet, 21... Holding part, 22... Pull part, 23 ...Sheet puller,
25...Legs of the holding part, 26...Hole of the pull part, 2
7... Guide groove, 28... Pedestal, 29... Pin,
30... Pulling tool mounting hole, 31... Bolt and wing nut, 32... Notch.

Claims (1)

[Scope of Claim for Utility Model Registration] A sheet pull-out handle used to pull out sheets stored in a block from the block has a pair of upper and lower legs whose tips can come into contact with the front end surfaces of the upper and lower frames of the block. a substantially U-shaped holding part that can be held by pressing against the block; and a pull part attached to the legs of the holding part so as to be movable back and forth within a certain distance range along the sheet pulling direction. and a pin having a pin protruding at a tip end perpendicular to the sheet pulling direction and insertable into a hole formed in the front edge of the sheet, and attached to the handle portion so that the vertical mounting position can be adjusted. The seat puller is equipped with a seat puller, and the pin of the seat puller is inserted into the hole in the seat,
A handle for pulling out a sheet, characterized in that the sheet can be pulled out a certain distance from the block by pressing and holding the holding part against the block and pulling the handle part.