JPS61168295A - Handle construction for printed circuit board unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a printed board unit housed in a rack for electronic devices, communication devices, etc., and particularly relates to a handle structure for an insertable/removable printed board unit. . Note that a printed board unit is a unit made by mounting one or more printed boards with electronic components mounted on the front board with the board surfaces almost perpendicular to each other, and which has a predetermined electrical function. refers to something formed in

[Problems to be solved by conventional technology and invention] Electronics
BACKGROUND ART A rack device such as a communication device is often formed by accommodating a plurality of printed board units. When this type of printed board unit is inserted into a rack, the unit-side connector installed at the rear end of the printed board mates with the backboard connector installed on the backboard of the rack. In addition, the front plate of the unit is fixed to the unit fixing part of the racking device with fixing means such as fixing screws, and when pulling it out from the racking device, loosen the fixing screws, etc. and then use the handle provided on the front plate. Many of them are designed so that they can be pulled out by holding them and pulling them forward. These various printed board units are pulled out from the rack device and used during functional tests and maintenance inspections. Therefore, it is preferable that this type of printed board unit has a structure that allows easy insertion and removal operations.

The conventional handle structure of this type of printed board unit is mainly that the handle member is fixedly fixed to the front surface of the unit so as to protrude forward, and the unit front plate is screwed to the unit fixing part of the rack using a separate fixing screw. The unit is configured to be fastened and fixed, and the unit front plate is provided with a retaining hole for pulling out, and the unit front plate is attached to the unit fixing part of the rack using separate fixing screws as in the conventional example. Some devices have a structure in which the device is fixed with screws, and when the device is to be removed from the rack, a separate removal tool is engaged with the retaining hole and the device is pulled out using this removal tool.

However, in the case of the former conventional example, the handle member protrudes above the front panel of the unit, making it easy for workers or other objects to bump into it, and the appearance is not good. Furthermore, the fixing screw is separate. Because of this, there are problems such as it takes time to insert and remove the unit, and the fixing screws are easy to lose. In addition, in the case of the latter conventional example, the extraction tool and fixing screw are separate pieces, so it takes time and effort when inserting and removing the unit.
In particular, it takes a lot of effort to pull it out, and like the former conventional example, it is easy to lose the fixing screw, and furthermore, it is troublesome to store the extraction tool. Therefore, the present invention was devised for the purpose of solving such problems.

[Means for solving problems]

The present invention provides a handle structure for a printed board unit that solves the above-mentioned problems. A handle member that can protrude forward from the front end of the handle member is provided, a unit fixing member that penetrates the handle member from the front to the rear, is slidable in the front-rear direction, and is integrally inserted with the handle member, and further A handle structure for a printed board unit is provided that includes a holding member that slidably holds the handle member in the front-back direction.

The handle member has front and rear walls that are integral with the bottom wall and face each other in the front and back, and has an intermediate wall that connects the front and rear walls with each other, and further has a screw hole inserted through the intermediate wall. The unit fixing member is formed into a short channel shape with an insertion hole penetrating in the front-rear direction, and the unit fixing member has a threaded portion at the tip and a diameter smaller than the root diameter of the threaded portion between the threaded portion and the head. The retaining member is formed as a fixing screw having a shaft portion, and is integrally inserted into the handle member from the front so as to be slidable in the front and back direction through the insert threaded portion, and the holding member is attached to the upper surface of the handle member and The handle member is formed as a holding fitting that surrounds and holds both left and right sides, and intervenes in a retaining recess formed between the front and rear side walls of the handle member to define the range of sliding of the handle member in the front and rear direction. It is preferable that the retaining piece is provided integrally.

[For production]

The handle structure of the above-mentioned printed board unit is such that the handle member is slidable in the front-rear direction and can protrude forward from the front end surface of the unit, and the unit fixing member (for example, a fixing screw) is slidable in the front-rear direction on the handle member. By providing the unit in one piece, when inserting the unit into the rack, the handle member can be pushed in so that it is aligned almost flush with the front end surface of the unit, and the fixing eagle inserted into the handle member can be inserted into the handle member. The unit can be easily fixed to the rack by screwing it in. Also, when pulling the unit out of the rack, loosen the fixing screw and continue pulling the fixing screw forward to remove the handle from the front end of the unit. It can be made to protrude forward, and the unit can be easily pulled out from the rack by placing a finger on the protruding handle H and pulling it forward.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 are diagrams for explaining a tenth embodiment of the present invention. In each of these figures, the same parts are designated by the same reference numerals.

FIG. 1(A) is a plan view of Embodiment 10 (however, the holding fitting 1
The left side from the center line α of 3 is indicated by a two-dot chain line), Figure 1 (
b) is a front view (front view) seen from the direction of arrow P in Fig. 1(a), and Fig. 1(c) is the Q + Q 2 of the first part (b).
2 is an exploded perspective view of essential parts of the tenth embodiment shown in FIG. 1, and FIG. 3 is a diagram schematically showing a printed board unit 20 equipped with the tenth embodiment. (A) is a front view of the unit 20, and FIG. 3 (B) is an arrow R in FIG. 3 (A).
It is a right side view seen from the direction. In addition, when facing FIG. 1 (A), the lower side is the front side of Example 10 and other parts, the upper side is the rear side, the left hand side is the left side, the right hand side is the right side, and the upper side in the vertical direction with respect to the figure. The side is called the upper side and the lower side is called the lower side, and the same applies to other figures. .

First, the printed board unit 20 will be briefly explained with reference to FIG. In the figure, reference numeral 21 indicates a front plate, and a surface decorative plate 22 is provided on the front wall 21a of the front plate 21.
are tightly fixed with screws. A first printed board 23-1 is fixed to the front plate 21 with screws, with its plate surface being arranged substantially perpendicular to the front surface of the front plate 21. Reinforcement frame 24.25.26 along the outer peripheral edge of the first printed board 23-1
is fixed with screws. These reinforcing frames 24.25.2
6, the second printed board 23-2 is placed on the first printed board 2.
Further, reinforcing frames 27.degree. 28 are arranged on both sides of the second printed board 23-2 at a predetermined interval from the second printed board 23-1, and together with these reinforcing frames 27.degree. 2 is fixed to the reinforcing frame 24, 25, 26 with screws. Although not shown, predetermined conductor patterns are formed on the first printed board 23-1 and the second printed board 23-2, and various electronic components are mounted on the first printed board 23-1 and the second printed board 23-2.

At the rear end of the 1st and 2nd printed boards (23-1, 23-2) are connectors 23-1a and 23-2a on the uni-so 1 side.
are formed as an upper and lower pair. An alarm lamp (for example, red) 29, a display lamp 30, a switch 31, and the like are arranged on the front surface of the front plate 21. Incidentally, the surface decorative board 22 is formed with insertion holes corresponding to the respective parts, through which parts such as the lamps 29 and 30 and the switch 31 are inserted. Embodiment 10 is provided at the upper and lower front ends of the front plate 21, respectively, as will be described later.

In addition, the reference numeral 11 indicates a handle member constituting the present embodiment 10, and 12
13 indicates a unit fixing screw, and 13 indicates a holding fitting. This printed board unit 20 is formed of two printed boards (23-1, 23-2) as described above, and when inserted into a unit housing part (not shown) of a racking device, , unit side connector 23 1a, 23-2
a fits into the backboard connector (not shown) of the rack, and the unit fixing screw 12 fits into the unit fixing part (not shown) of the rack.
(not shown) and is tightened to be housed and fixed in the rack device.

Embodiment 10 will now be described with reference to FIGS. 1 and 2. The tenth embodiment basically includes a handle member 11, a unit fixing screw 12, and a holding fitting 13. The handle member 11 has a front side wall 11a and a rear side wall 11b that face each other in the front and back with a predetermined interval, and these both side walls 11a
, llb, and a bottom wall 11d that integrally connects these side walls 11a, llb and the intermediate wall 11C (see FIG. 2).
, and engaging recesses 11e and llf with open left and right ends are provided on the left and right sides of the intermediate wall portion 11C, and an insertion hole 11g penetrating the intermediate wall portion 11C in the front-rear direction is provided, and the insertion hole] 1g. An insertion screw hole 11h (see FIG. 1(c)) is provided at the front end and formed in the shape of a short channel. This handle member 11 is attached to the upper wall 21 of the front end of the front plate 21.
placed on b. The unit fixing screw 12 has a threaded portion 12a at its tip, a shaft portion 12b that is slightly narrower than the root diameter of this threaded portion 12a, and a head 12c at the front end of this shaft portion 12a. (see Fig. 2), threaded portion 12
a passes through the insertion screw hole 11h of the handle member 11 and is inserted into the insertion hole 11g of the handle member 11, and is slidable in the front and rear direction and is integrally inserted into the handle member 11. As shown in FIG. 2, the holding fitting 13 is attached to the handle member 11.
Upper wall 13 for enclosing and holding two sides and both left and right sides
Engagement pieces 13e, 13 have a holding portion 13a having a U-shaped cross section and include left and right side walls 13c, 13d, and are bent inwardly and protrude from the front edges of left and right side walls 13c, 13d.
f are formed respectively, and left and right side walls 13c, 1
Mounting piece 1 that bends and protrudes outward from the lower edge of 3d to the left and right
3g and 13h are formed respectively, and a mounting piece 13g is also formed.
, 13h, the support piece 1 is bent and protrudes from the front edge of the
31°13j are formed respectively. The holding fitting 13 has a holding portion 13a that surrounds the upper surface and both left and right side surfaces of the handle member 11 disposed on the two walls 21b of the front plate 21, and left and right retaining pieces 13e, 13f
are respectively arranged in the left and right engaging recesses 11, e, llf of the handle member 11, and the mounting pieces 13g,
13h are fixed onto the upper wall 21b of the front end of the front plate (21) using fixing screws 14 (FIG. 1, in this case, a total of four screws on the left and right sides). As a result, the handle member 1
1 is held by the holding fitting 13 and is one wall 2 of the front plate 21.
1bl is held so as to be slidable in the front-back direction, and the sliding range is further defined by the engaging pieces 13e and 13f. That is, as shown in FIG. 1(a), the handle member 11
In the pushed-in state, the front surface of the handle 411 is almost aligned with the front surface of the decorative surface board 22, and the back surface of the front wall 11a of the handle member 11 is aligned with the engaging pieces 13e, 13f of the holding fitting 13.
It comes into contact with the front surface of the At this time, the engaging piece 13e
, 13f and the front surface of the rear wall 11b of the handle member 11 are provided with a gap having the following dimensions. Therefore,
This area becomes the sliding range of the handle member 11. Note that fixing screws 15 (
In this case, the decorative surface board 22 is supported and fixed by a total of two pieces on the left and right sides (as shown in FIG. 1). In the above example 10, unit 2
Although the example in which the unit 20 is provided at the upper front end of the unit 20 has been shown,
When it is provided at the lower part of the front end, it is vertically symmetrical to the tenth embodiment and has exactly the same structure.

The tenth embodiment thus configured is operated as follows. First, when inserting the unit 20 into the housing part (not shown) of the rack device, push the unit 20 into the housing part and connect the unit side connectors 23-1a, 23-2a (
(see Figure 3) into the hack port connector (not shown) provided on the hack board of the rack, and then continue to tighten the unit fixing screw 12 to the unit fixing part 40 of the rack.
(Indicated by two-dot chain lines in FIGS. 1A and 1C), the unit 20 can be easily inserted and fixed to the rack. At this time, the front surface of the handle member 11 is substantially aligned with the front surface of the unit 20 (in this case, the front surface of the decorative surface board 22). Next, when pulling out the unit from the rack, loosen the unit fixing screw 12 and pull it forward.
As shown by the two-dot chain line 11-1 in Figure (c), the unit 2
It is easily pulled out and protrudes forward from the front surface of 0 by the I1 dimension shown in FIG. 1 (a). Next, the unit 20 can be easily pulled out from the rack by hooking fingers into the engagement recesses 11e, llf of the protruding handle member 11 and pulling it forward.

〔Effect of the invention〕

As explained above, according to the present invention, a handle member having an engaging recess is provided in the front end of the printed board unit so as to be slidable in the front and rear directions and protrude forward from the front end surface of the unit, and further By providing the unit fixing member (for example, a fixing screw) that is slidable in the front-rear direction and integrated with the handle member, it is possible to simplify the insertion and removal operation of the unit, prevent loss of the unit fixing member, and make it possible to separate the unit fixing member. This eliminates the need for a removal tool, and furthermore, when the unit is inserted and fixed into the rack, the front surface of the handle member is almost aligned with the front surface of the unit, which improves the appearance and prevents other objects from bumping into each other. Significant effects can be obtained, such as the ability to

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment (10) of the present invention, and FIG. 1 (a) is a plan view thereof (however, the left side from the center line α of the holding fitting 13 is shown by a two-dot chain line), Figure 1 (b) is the first
Front view (front view) seen from the direction of arrow P in figure (A), 1st
Figure (C) is a sectional view taken along the QI Q2 line in Figure 1 (B).
The figure is an exploded perspective view of the main parts of the embodiment (10) in Figure 1, and
The figure shows a printed board unit (20) equipped with the embodiment (10) of FIG. 1, in which FIG. 3(A) is a front view thereof, and FIG. It is a right side view seen from the direction of arrow R. 10...Example of the handle structure of the printed board unit of the present invention, 11...Handle member, 1ta, Ilb...front
Rear side wall, llc...intermediate wall part, lid...bottom wall, 1
1e, 11f... left and right retaining recesses, l1g... insertion hole, llh... insertion screw hole, 12... unit fixing screw (unit fixing member), 12a... tip threaded part,
12b...shaft part, 12c...head part, 13...holding fitting (holding member), 13a...holding part, 13b...
Upper wall, 13c, 13d...-Left, right side wall, 13e, 13
f... Left and right engaging pieces, 20... Printed board unit 21 ゛... Front plate, 21a... Front wall, 21
b...Top wall, 22...Surface decorative board, 23-1.23
-2...First and second printed boards, 40...Unit fixing portion of racking device (double-dashed line).

Claims (1)

[Scope of Claims] 1. A handle member is provided at the front end of the printed board unit that is slidable in the front-rear direction and can protrude forward from the front end surface of the unit, and a handle member that penetrates the handle member from the front to the rear is provided. A printed board unit further comprising: a unit fixing member that is slidable in the front-back direction and inserted integrally with the handle member; and a holding member that holds the handle member slidably in the front-back direction. handle structure. 2. The handle member has front and rear walls that are integral with the bottom wall and face each other in the front and back, and has an intermediate wall that connects the front and rear walls with each other, and has a screw hole inserted through the intermediate wall. The unit fixing member is formed into a short channel shape with an insertion hole penetrating in the front-rear direction, and the unit fixing member has a threaded portion at the tip and a diameter smaller than the root diameter of the threaded portion between the threaded portion and the head. The holding member is formed as a fixing screw having a shaft portion and is integrally inserted into the handle member from the front through the insertion screw portion so as to be slidable in the front and back direction, and the holding member is attached to the upper surface and both left and right sides of the handle member. An engagement that is formed as a holding fitting that surrounds and holds the handle member, and that intervenes in an engagement recess formed between the front and rear side walls of the handle member to define a sliding range of the handle member in the front and rear direction. A handle structure for a printed board unit according to claim 1, wherein the pieces are integrally provided.