JPH06866Y2 - Attachment device for printed circuit boards in subrack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for accommodating and fixing a printed circuit board in a required subrack.

[Conventional technology and its problems]

Conventionally, as this type of apparatus, those shown in FIG. 6 and FIG. 7 have been known, which will be described with reference to FIG.

That is, in the figure, 101 is a handle, 102 is a locking claw integrally formed at one end of the handle 101, 103 is a knob integrally formed at the other end, and 104 is a proximal end side of the locking claw 102. It is the bearing portion protruding from the. In addition, 105 is a pin, 106 is a printed circuit board having pin holes above and below the front end portion, 107 is a subrack for housing the printed circuit board 106, and 108 is a front end portion of the subrack 107 which is opposed to the upper and lower sides of the front end portion in the longitudinal direction A mounting member for card guides, which is arranged along the reference numeral 109, is a locking groove formed on the surface of the mounting member 108 along the longitudinal direction.

The conventional fastening device configured as described above is a printed circuit board.
The handle 101 is pivotally attached to the upper and lower ends of the front end of 106 via pins 105. Thereafter, as shown in FIG. 7, the printed circuit board 106 is inserted into the subrack 107 along the card guide, and the handle 101 is rotated inward about the pin 105. Then, the locking claw 102 is attached to the locking groove 10 of the mounting bracket 108.
It is something that you can tie to 9.

By the way, the conventional fastening device allows the printed circuit board 106 to be fastened and housed in the subrack 107 with a simple structure, but has the following drawbacks.

That is, when the printed circuit board 106 is engaged, since the handle 101 is rotated inwardly about the pin 105, the locking claw 102 inevitably forms a perfect circular arc, and by extension, The corresponding locking groove 109 must have a width and a depth along the rotation locus of the locking claw 102. Therefore, the mounting bracket 108 itself tends to be relatively large, and it is difficult to meet the request of this type of subrack 107 which is required to be more and more compact, and in some cases, it is out of a predetermined standard. There was a fear.

The present invention intends to solve the conventional problems all at once, and to provide an extremely convenient engaging device that can be easily engaged with a shallow and narrow locking groove.

[Means for solving problems]

In other words, this invention has a locking claw 14 for the printed circuit board holder 1.
A handle 10 having a shaft is attached through two shafts 6 and 7, and a substantially linear guide is provided in a shaft hole 15 of one shaft 6 so that the handle 10 can be rotated while drawing a substantially curved locus. The groove hole 17 is a guide groove hole having a substantially curved shape in the shaft hole 16 of the other shaft 7.
18 is configured to communicate with each other.

[Action]

The handle 10 is rotated while changing the center of rotation by aligning the two shafts 6 and 7 in the linear guide groove hole 17 and the curved guide groove hole 18, respectively, and the locking claw 14 is always omitted. Since it can be rotated while drawing a curved locus, it can be smoothly engaged even in the shallow and narrow locking groove 22.

〔Example〕

The present invention will be described below with reference to an embodiment shown in the drawings.

Reference numeral 1 is a substantially block-shaped holder, on one side of which a printed circuit board 3 can be attached via a set screw 2, and on the top surface, a panel 5 can be attached via a set screw 4. . Reference numerals 6 and 7 denote a pair of shafts, which are respectively provided at the center of both sides of the holder 1 and slightly obliquely below and project from each other. It can be attached to the bracket 20. 10 is a handle, 11 is a knob that is rotatably attached to the rear end of the handle 10 via a shaft 12, 13 is a pair of bearings on both sides integrally formed at the front end of the handle 10, and 14 are the respective Locking pawls integrally formed downward at the lower end of the front end of the bearing portion 13, 15 and 16 are the two
Shaft holes formed above and below each bearing portion 13 corresponding to the individual shafts 6 and 7, a linear guide groove hole 17 formed in the downward direction communicating with the shaft hole 15 above, and 18 The guide groove hole is formed in a lateral direction and communicates with the lower axial hole 16 and is formed in a lateral direction. Reference numeral 19 is a subrack, 20 is a mounting member to which a guard guide 21 is freely mounted, and 22 is a locking groove formed on the surface of the mounting member 20 along the longitudinal direction.

Next, the operation of the above embodiment will be described.

First, the holder 1 is attached to the upper and lower front end portions of the printed circuit board 3 so as to face each other with the set screw 2, and
The panel 5 is fixed and erected with the set screw 4 in between.
(See FIG. 2 and FIG. 2). Thereafter, as shown in FIG. 3A, the printed circuit board 3 is inserted along the card guide 21 with the knob 11 raised, and is housed in the subrack 19. When the printed circuit board 3 is completely stored, the knob 11 is pivoted upward to fold it, and then the handle 10 is pressed upward (see FIGS. 3B and 3C). Then, the handle 10 has a shaft hole 15
16 straight guide slots and curved guide slots from 16
Since the upper and lower shafts 6 and 7 are rotated along 18 while changing the center of rotation, the locking claw 14 rotates in a substantially curved locus, and the locking groove 22 of the mounting bracket 20. Lock on. At this time, since the locking claws 14 draw a substantially curved locus to rotate,
It is possible to smoothly engage with the shallow engaging groove 22 having a narrow width. When the locking of the locking claws 14 is completed, the holder 1 is mounted on the mounting bracket 20 with the set screw 9, and the printed circuit board 3 is fixedly stored in the subrack 19 (see FIG. 3D).

Subsequent to the same operation, the printed circuit board 3 is subracked.
It is recommended to store it in 19 (see Fig. 5).

On the contrary, when the printed circuit board 3 is taken out from the subrack 19, the above operations may be sequentially reversed as shown in FIGS. Originally high-density DI
A considerable force is required to pull out the printed circuit board 3 on which a plurality of N connectors are mounted.
As shown in Fig. D, the knob is usually compactly folded.
By raising 11, the printed circuit board 3 can be pulled out without difficulty because a larger moment can be obtained.

In addition, in the above embodiment, the two shafts 6 and 7 are respectively provided so as to project substantially above and below the holder 1, but the present invention is not limited to such positions and may be arbitrarily changed. At this time, the linear guide groove hole 17 and the curved guide groove hole 18 of the handle 10 correspond to the shafts 6 and 7.
Of course, the position of can be changed.

[Effect of device]

According to this invention, according to the above, the handle 10 having the locking claws 14 is attached to the printed circuit board holder 1 through the two shafts 6 and 7, and the handle 10 draws a substantially curved locus. The shaft hole 15 of one shaft 6 is formed with a substantially linear guide groove hole 17 and the shaft hole 16 of the other shaft 7 is formed with a substantially curved guide groove hole 18 so as to be rotated. Because
The handle 10 is rotated while changing the center of rotation by aligning the two shafts 6 and 7 in the linear guide groove hole 17 and the curved guide groove hole 18, respectively, and the locking claw 14 is always omitted. It can be rotated by drawing a curved locus, can be smoothly engaged even in the shallow and narrow locking groove 22, and it is easy to downsize the mounting bracket 20 itself.
The subrack 19 can be made extremely compact and can always meet the required standard.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view showing a state of being mounted on a printed circuit board 3, and FIGS. FIG. 5 is a perspective view showing a state in which the printed circuit board 3 is locked and stored in the subrack 19, FIG. 6 is an exploded perspective view showing a conventional example, and FIG. 7 is a view showing the locked state. FIG. 1 --- Holder, 6-7 --- shaft, 10 --- handle, 14 --- locking claw, 15/16 --- shaft hole, 17-18 ---
Guide slot.

Claims (1)

[Scope of utility model registration request] 1. A handle 10 having a locking claw 14 is attached to a printed circuit board holder 1 via two shafts 6 and 7, and the handle 10 is rotated in a substantially curved locus. The shaft hole 15 of one of the shafts 6 has a substantially linear guide groove hole 17
However, the printed circuit board fastening device in the subrack is characterized in that a guide groove hole 18 having a substantially curved shape is formed to communicate with the shaft hole 16 of the other shaft 7.