JPS6018860Y2 - Plate attachment mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for attaching a plate-like body such as a printed wiring board, and is particularly designed to facilitate attachment and detachment and ensure reliable fixation.

Conventionally, a mechanism as shown in FIGS. 1 and 2 has been proposed as a mechanism for attaching a printed wiring board, which is a plate-shaped body, to a stand such as a chassis.

That is, the chassis etc. to which the printed wiring board 1 is mounted are mounted on the base 2 at positions approximately corresponding to each corner of the board 1, and the board 1 is mounted on the mounting plate 3 that regulates the height.
are provided, and locking claws 4 for pressing and supporting the substrate 1 placed on the placement plate 3 are provided in parallel with the placement plate 3 so as to face each other.

Furthermore, fitting protrusions 5 are provided on the mounting plate 3 provided at each corner of one end of the printed wiring board 1 so as to fit into the fitting holes 4a formed in the board 1.

Then, the printed wiring board 1 is placed on the mounting plate 3, the fitting hole 4a is fitted into the fitting protrusion 5, and the printed wiring board 1 is further pressed and supported by the opposing locking claws 4 for installation. It is mounted on the base 2.

By the way, in the structure as described above, when the printed wiring board 1 is mounted on the base 1, the locking claws 4 facing each other on the board 1 are arranged as shown by broken lines in FIG. The plurality of fitting holes 4a and fitting protrusions 5 are pushed outward and expanded.
Installation is difficult because it requires alignment.

Further, after installation, the locking claws 4 tend to be elastically displaced, so that the printed wiring board 1 can easily come off due to a slight external force.

Further, the locking pawls 4 elastically support the printed wiring board 1 from both sides, but from the top surface of the board 1, they are only supported by the tips, so elasticity in the board thickness direction of the board 1 is not obtained. Because of this, looseness tends to occur in the thickness direction of the plate.

Therefore, the present invention solves the drawbacks of the conventional ones as mentioned above, and is easy to install and remove.
Furthermore, the present invention is intended to propose a mechanism for attaching the plate-shaped body in such a way that the attachment condition is stable and furthermore, the occurrence of backlash after the attachment is reliably prevented.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 3 is a perspective view showing the bracket 11 constituting the present invention and the printed wiring board 12 which is a plate-like body to which the bracket 11 is attached. The bracket 11 is formed by molding of synthetic resin or the like.

A printed wiring board 1 is attached to the bracket 11.
Position regulating walls 13, 13, which come into contact with one side surface 12a of this substrate 12 when attached to one side edge of the substrate 12, are provided so as to rise at both ends of the elongated bracket body 14, and these position regulating walls 13. A fitting protrusion 16 is provided on one side of the printed wiring board 13 to tightly fit into fitting holes 15, 15 formed at predetermined positions at each corner on both sides of the printed wiring board 12.
．． 16 are planted.

The bracket 11 also includes the position regulating wall 13.
13 and a protruding strip 17.17 that supports one side 12a of the printed wiring board 12 and regulates the position of the board 12.
are provided along the length of the bracket body 14.

Further, the bracket 11 has two position regulating protrusions that fit into a notch recess 18 provided on the side edge of the printed wiring board 12 and regulate the relative fitting position in the widthwise direction of the board 12. 19av 19a are provided across the width direction of the bracket main body 14.

The bracket 11 also has a plurality of (three in the illustrated example) support arms formed to have elasticity by drilling U-shaped notch holes 19 in the bracket body 14 at predetermined intervals. 20.20.The other side surface 1 of the printed wiring board 12 formed in such a way that each tip of 20 stands up.
A locking pawl 21°21.21 is provided to support 2b.

By the way, the position regulating wall 13 provided on the bracket 11
As shown in FIG. 4, the locking claws 21 are formed with a spacing W2 that is approximately the same as the wall thickness W of the printed wiring board 12 to be inserted and held here, and securely secure the side edges of the board 12. It is designed to hold the

That is, the position regulating wall 3 is formed to be slightly thin, have a predetermined height, and have slight elasticity so as to elastically support one side 12a of the printed wiring board 12, while the locking claw 21 is formed here. The mounting of the printed wiring board 12, which is clamped by the board 12, is formed to have a sufficient wall thickness so that it cannot be elastically deflected by at least a force applied in the horizontal direction, so as to reliably control the position.

Furthermore, the height 11 from the upper edge of the fitting protrusion 16 to the surface of the bracket body 14 is approximately the same as the length 1□ from one side edge of the printed wiring board 12 to the upper edge of the fitting hole 15. Ru.

Distance W2 between position regulating wall 13 and locking claw 21 and fitting protrusion 1
6 and the fitting hole 15 of the printed wiring board 12 have the above-mentioned relationship. Therefore, in order to smoothly insert and fit the printed wiring board 12 here, it is necessary to First, it is necessary to arrange the substrate 12 so that one side edge of the substrate 12 abuts against the position regulating wall 13 at a predetermined angle, and a part of the tip of the fitting protrusion 16 formed in an arc shape faces the fitting hole 15. There is.

Therefore, between one end of the locking claw 21 and one end of the fitting protrusion 16, there is formed an insertion space W3 sufficient for inserting the printed wiring board 12 with the above relationship, and furthermore, one end of the locking claw 21 is provided with an insertion space W3 sufficient for inserting the printed wiring board 12. is provided with an inclined surface 22 having an angle corresponding to the insertion angle for guiding the printed wiring board 12 inserted in the above relationship.

That is, the printed wiring board 12 is inserted into the bracket 11 as shown in FIG.

Here, when the substrate 11 is rotated in the direction of the arrow in FIG. 4, it is slightly bent using the locking claw 21 and the support arm 20 as fulcrums, and the position regulating wall 13 is also slightly bent outward. I will be forgotten.

Then, the printed wiring board 12 is attached to the bracket 11 so that the fitting protrusion 16 and the fitting hole 15 are fitted, and one side edge is held between the position regulating wall 13 and the locking claw 21.

The printed wiring board 12 with the brackets 11 mounted in this manner mounted on opposite sides thereof is mounted to a base via these brackets 11, 11 for predetermined mounting of chassis and the like constituting various equipment bodies.

That is, when mounting the brackets 11, 11 with the screw insertion holes 23 protruding from the other side, the tongue pieces 24 are placed in correspondence with the bosses 26 set on the base 25, and the screws 27 are inserted. If the printed wiring board 12 is fixed through the screws, the printed wiring board 12 is mounted in a predetermined position as shown in FIGS. 5 and 6.

The printed wiring board 12 mounted in this manner is reliably clamped by the position regulating wall 13 and the locking claw 21, and is mounted with accurate position regulation by the fitting of the fitting protrusion 16.

Since the position regulating wall 13 has elasticity in the thickness direction of the printed wiring board 12, that is, in the direction of the arrow in FIG. Since the fitting operation is performed at a position where the position is regulated in advance, the fitting operation is easy, and at the same time, the removal is also easy.

The relative fitting position of the printed wiring board 12 and the bracket 11, the insertion angle of both during the insertion operation, etc. are based on the board 1.
Since the size, thickness, or mounting of the printed wiring board 2 can be freely selected depending on the position, the optimum bracket 11 can be used for the desired mounting according to the board for which the printed wiring board 12 is always stable. can be installed.

In addition, although the above-mentioned embodiment was explained using a printed wiring board, the present invention is not limited to this, and the present invention can be widely applied to attachment of a plate-like body.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional example, and FIG. 2 is a perspective view showing a locking claw portion of the conventional example. Fig. 3 is a perspective view showing the bracket and printed wiring board constituting the present invention, Fig. 4 is a side sectional view of the bracket, and Figs. 5 and 6 show the mounting state of the printed wiring board. 5 is a plan view thereof, and FIG. 6 is a side view thereof. 11... Bracket, 12... Printed wiring board, 13... Position regulating wall, 15...
... Fitting hole, 16... Fitting protrusion, 21...
...Latching claw.

Claims (1)

[Scope of utility model registration request] An elastic locking claw surrounded by a position regulating wall and a U-shaped cutout hole is provided adjacent to both sides of the bracket, and a fitting protrusion is erected on the position regulating wall, and the above-mentioned locking An inclined surface is formed at the tip of the claw, and the distance between the position regulating wall and the locking claw is approximately the same as the thickness of the plate-shaped body to be attached to the bracket, and the fitting protrusion and the locking The distance from one end of the protrusion forming the sloped surface is such that the plate-like body can be inserted between the position regulating wall and the locking pawl along the slope, and the corner of the plate-like body A fitting hole is provided in which the fitting protrusion fits, and the plate-like body is inserted along the inclined surface and the plate-like body is rotated to fit the fitting protrusion and the fitting hole. A pair of brackets are attached to both sides of the plate-like body, and the plate-like body is attached to a stand via these brackets.