JPS5927651Y2 - Fixtures for circuit boards - Google Patents

Description

[Detailed description of the invention] This invention is a spacer for fixing the boards together by maintaining an appropriate space between the boards when multiple wiring boards such as circuit boards are stacked and used. This invention relates to a circuit board fixture that is used as a clip for securely fixing a wiring cable bundle to a board.

Conventionally, in electronic equipment, etc., when installing a circuit board (hereinafter referred to as a board) on a chassis, or when installing another board on top of the board, for example, there is a gap between the chassis and the board, or between the boards. Since it uses a support that is fixed with screws, it requires a large amount of man-hours for installation, and has the disadvantage that it requires a large number of parts, making the production cost relatively high.

For example, US Pat. No. 37
A spacer, such as the spacer described in No. 77052, has been proposed that is integrally molded from a synthetic resin and can be fixed to a chassis or a board by snap-fitting it with one touch by utilizing the elasticity of the synthetic resin.

However, although spacers with this structure are improved in terms of installation man-hours and production costs compared to those using screws and supports, they have the disadvantage that they are prone to collapse due to horizontal loads or torsional loads applied to the board. Ta.

Although it is not an inter-board spacer, there is also a board fixing device that has the same structure as the lower end fixing part that snaps onto the board as described in the above-mentioned US patent, and the upper end has a clip structure to hold electric cables, etc. However, like the spacer described in the above-mentioned US patent, it has the disadvantage that it tends to fall down, tilts even under the slightest external force, and cannot maintain a state in which it is installed perpendicularly to the substrate surface.

The present invention relates to an improvement of the known circuit board fixture which has the above-mentioned drawbacks, and has a structure in which ribs for preventing falling are attached to the supports of the fixture.

That is, the gist thereof is: a fixed part at the upper end, a lower base provided in opposition to the fixed part, at least one support that connects these parts, and an arcuate elastic plate faun provided below the lower base. an elastic plate, a connecting plate extending downward from the center thereof, and a palm-shaped elastic piece whose left and right ends are connected to the connecting plate provided opposite the back surface of the elastic plate Faun-shaped piece; This is a circuit board fixture that is provided with ribs to prevent it from falling over, and these ribs are each integrally molded with resin.

The present invention will be explained below based on drawings showing embodiments.

Figures 1 to 5 show an example of a spacer having four pillars for fixing the boards to each other by providing a certain space between the boards, among the circuit board fixtures according to the present invention. .

In the figure, 1 is an upper base, 2 is a flange part provided with a height equal to the thickness of the substrate fixed on the surface of the upper base 1, and a coupling hole 3 is provided in this, These constitute a fixing part 4 at the upper end, and an upper substrate described later is fixed thereto.

Reference numeral 5 denotes a lower base, and between this and the upper base 1, there are four supports 6a, 6b, 6C, and 6d made of plate-shaped pieces facing each other at right angles in the height direction. set up and interconnected.

Approximately in the center of the lower part of the lower base 5 is provided a rectangular elastic plate faun 7 which is arch-shaped when viewed from the side, and notches 8 are provided on the left and right sides of the connecting portion 5a between this and the lower base 5. The root part of the elastic plate 7 is made slightly thinner to make it easy to bend.

Further, a thick connecting plate 9 is connected to the elastic plate Faun's piece 7 downward in the center thereof, and the connecting plate 9 is connected to the tip of the elastic plate faun through a connecting piece 10 whose left and right ends are thin and curved in an arcuate shape. A palm-shaped elastic coupling piece 11 is formed which is connected to and opposed to the back surface of the elastic plate Faun's piece 7, and furthermore, a mounting hole of the lower substrate is fixed to the tip of the elastic coupling piece 11. It has a semi-spherical, rounded shape to make it easy to insert into the body.

Among the four pillars 6a, 6b, 6C, and 6d, the pillars 6b and 6d, which are provided in a direction perpendicular to the longitudinal direction of the elastic plate faun 7, have ribs 12 for preventing falling.
13, and support columns 6a and 6C provided in the same direction as the longitudinal direction of the elastic plate faun leg 7 are similarly provided with fall prevention ribs 23 and 24, respectively.

And these ribs 12, 13 have bottom edges 12a, 1
3a is attached at a height that almost touches the surface of the lower substrate described later, and the ribs 23 and 24 are attached at the bottom edge 23a.
, 24a, when the circuit board fixture of the present invention is attached to the lower board, are attached so as to be substantially in contact with both end surfaces of the upwardly deflecting elastic plate faun kami piece 7, and thereby used as a spacer, It is constructed so as to prevent the elastic plate from falling in the longitudinal direction as well as in the direction perpendicular to the longitudinal direction of the elastic plate faun 7, which is a major feature of the present invention.

The spacer made up of each part in the above description is integrally molded from a highly elastic synthetic resin.

Note that the upper end fixing portion 4 is referred to as the lower base 5 in the above description.
A spacer may also be used to hold and fix the upper substrate and the lower substrate with a certain space between them by having the same structure as the lower substrate.This example will be described later with reference to FIGS. 6 to 11.

FIG. 5 is a side view showing a state in which the lower substrate A and the upper substrate B are fixed using the spacer described above.

To fix it, first, push the beveled elastic coupling piece 11 of the spacer into the attachment hole 14 of the lower substrate A with your finger.

The diameter of the mounting hole 14 is the maximum diameter of the elastic coupling piece 11 (Fig. 3 d)
When the elastic coupling piece 11 is pushed in, the left and right ends of the elastic coupling piece 11 are bent inward, and both ends of the elastic plate faun plate 7 are bent upward, so that the lower board A is bent upward. The upper ends of the left and right ends of the elastic coupling piece 11 are in contact with the back surface, and the elastic plate faun plate 7 is on the front surface.
Both ends of the two abut against each other.

At this time, both left and right ends of the elastic coupling piece 11 are restored outward by the elasticity of the connecting thin coupling piece 10, so that the lower substrate A is sandwiched from the front and back, and the elastic attachment to the lower substrate A is extremely strong. Become.

Furthermore, the fall prevention ribs 1 provided on the pillars 6b and 6d
The bottom edges 12a, 13a of the supports 2, 13 are almost in contact with the surface of the lower substrate A, and the bottom edges 23a, 24 of the fall prevention ribs 23, 24 provided on the support columns 5a'5c
Since a almost contacts the surfaces of both ends of the elastic plate faunshin piece 7 bent upward, the elastic plate faunshin plate 7 is prevented from falling not only in a direction perpendicular to the longitudinal direction but also in the same direction as the longitudinal direction. The vertically erected state on the lower substrate A is maintained.

Next, the mounting hole 15 of the upper substrate B is pushed into the flange portion 2 of the spacer, and then the elastic coupling piece 11 of the second stage spacer having the same shape is pushed into the coupling hole 3 of the flange portion 2 with a finger.

As a result, the elastic coupling piece 11 of the second-stage spacer is elastically attached to the coupling hole 3 of the first-stage spacer, and the elastic plate faun kami piece 7 touches the surface of the upper substrate B at both ends thereof. At the same time, the second stage spacer itself is pushed upward by the anti-collapsing action of the anti-collapsing ribs 12, 13 provided on the columns 6b, 6d and the anti-collapsing ribs 23, 24 provided on the columns 5a, 5c. The upper substrate B is fixed vertically on the substrate B, and at the same time, the upper substrate B itself is also securely fixed.

In this way, a plurality of substrates can be stacked and fixed one after another while maintaining an appropriate space.

Incidentally, in order to fix the final stage substrate, it is preferable to use a cap for fixing the final stage, which is composed of only the elastic plate faun 7 and the elastic coupling piece 11 in the spacer having the structure described above.

Next, among the circuit board fixing devices according to the present invention, those shown in FIGS. 6 to 11 are also examples of spacers for fixing the boards to each other by providing a certain space between the boards. , differs from those shown in FIGS. 1 to 5 in the shape of the support and the structure of the fixing part at the upper end.

In FIGS. 6 to 11, reference numeral 6 indicates four thick reinforcing ribs 16 a on the side wall that are perpendicular to each other in the axial direction.
, 16 b , 16 C, and 16 d are integrally provided as a support column.

The lower base 5 provided continuously to the column 6, the elastic plate faun 7 provided below it, the connecting plate 9, the elastic connecting piece 11, and other parts that function to be fixed to the lower substrate A, and their attachment. The position of the spacer is the same as that of the spacer shown in FIGS. 1 to 5 above.

12.13, 23.24 are comparatively thick ribs for preventing falling.

Among these fall prevention ribs, the bottom edge portions 12a, 13
The fall prevention ribs 12 and 13 having the shape a are reinforcing ribs 16 b in the direction perpendicular to the longitudinal direction of the elastic plate faun plate 7.
, 16 d, and the bottom edge 23
The fall prevention ribs 23, 24 having the reinforcing ribs 16a and 24a are in the same direction as the longitudinal direction of the holding piece 7,
16 C, and when the spacer of this embodiment is also attached to the lower substrate A, the bottom edge 12 a
, 13a are stably grounded on the surface thereof, and the bottom edges 23a, 24a are almost in contact with both end surfaces of the upwardly deflecting elastic plate-like piece 7 to prevent it from falling down. The points are the same as the spacers shown in FIGS. 1 to 5 above.

Reference numeral 17 denotes an upper base that is provided continuously to the support column 6, and above the upper base there are the elastic plate faun plate 7, the connecting plate 9, the arrow-shaped elastic connecting piece 11, etc., and the above-mentioned fixing parts that are provided below the lower base 5. They have the same configuration, so that the upper substrate B
An upper end fixing part 4 is formed to fix the.

The spacer trading operation according to this embodiment is shown in Figs.
Since it is the same as that described in FIG. 5, the explanation will be omitted.

The spacer of this embodiment is a fixture for maintaining the space between the boards, which is used only when two boards, the upper board B and the lower board A, are stacked as shown in FIG.

Similar to the above two embodiments, the spacer shown in FIGS. 12 to 17 is also an example of a spacer which is one of the circuit board fixing devices according to the present invention and is fixed by providing a certain space between two boards. It is.

In this example, the shape of the support column and the structure of the upper end fixing part are different from those of the above two embodiments.

That is, in this embodiment, reinforcing ribs 16 a , 16 b , 16 C, and 16 d facing each other at right angles in the axial direction are provided with an integrated support column (see FIG. 16) having a positive cross section, and the support ribs 16 a , 16 b , 16 C, and 16 d are provided with an integrated column (see FIG. 16) that is continuous with the reinforcing ribs 16 a , 16 b , 16 C, and 16 d . The parts that function to be fixed to the lower substrate A, such as the lower base 5 provided below, the elastic plate Faun piece 7, the connecting plate 9, and the elastic coupling piece 11 provided below it, and their mounting positions are as described in 2 above. This is the same as the spacer shown in the other embodiments.

12°13.23.24 are relatively thick ribs for preventing falling.

Among these ribs for preventing falling, ribs for preventing falling 12゜13
is the elastic plate faun kami piece 7 and the reinforcement 1 piece 16 in the perpendicular direction.
b, 16d, and the bottom edge 23a,
The fall prevention ribs 23, 24 having 24a are attached to reinforcing ribs 16a, 16C in the same direction as the longitudinal direction of the holding piece 7, and when attached to the substrate A, the bottoms of the fall prevention ribs 12, 13 The edges 12 a , 13 a are in contact with the surface thereof, and the bottom edges 23 a , 24 a of the fall prevention ribs 23 , 24 are almost in contact with the surface of the elastic plate faun 7 to prevent it from falling. It has become.

17 is four ribs 16a, 16b, 16C,
A disk-shaped upper base provided continuously to the support column 16d itself constitutes an upper end fixing part, and the upper substrate B is fixed thereto by, for example, gluing.

The operation for attaching the spacer according to this embodiment to the lower substrate A is the same as that described in FIGS. 1 to 5 above.

The spacer of this embodiment is a fixture for maintaining the space between the boards, which is used only when two boards, the upper board B and the lower board A, are stacked as shown in FIG.

Next, FIGS. 18 to 24 show circuit board fixing according to the present invention, which is different from the spacers of the above embodiments.

An example of a fixing tool (clip) used for arranging an electric wire cable or the like on a board is shown.

That is, in these figures, 6 is a cylindrical support.

The parts that function to be fixed to the substrate A, such as the elastic plate 7, the connecting plate 9, and the elastic coupling piece 11, which are provided below the lower base 5 which is continuously provided on the support column 6, and their mounting positions are as described above. This is the same as the various embodiments of the spacer shown in FIGS. 1 to 17, but an example is shown in which only two ribs for preventing collapse are provided when the lateral force is small or when there is no need for strength.

Reference numerals 12 and 13 are comparatively thick ribs for preventing falling, which are integrally attached to the support column 6 only in the direction perpendicular to the elastic plate faun plate 7, and when attached to the board A, the bottom edge 12 a, 13a is structured so that it can stably ground on the surface and will not fall over.

Further, the upper end fixing portion of the support column 6 has a lip structure so that it can hold electric wire cables and the like.

To explain this, a pair of left and right curved pieces 18 and 19 biased inwardly are integrally provided at the upper end of the column 6, and a hook portion 18a bent outward is provided at the tip of one of the curved pieces 18, and the other At the tips of the curved pieces 19, box-shaped locking parts 19a with open tops that engage with the hook parts 18a are provided, and elastic clamping pieces 20.21 are provided inside each of the curved pieces 18.19. is provided protrudingly, and the lock portion 19
a and the hook portion 18a to connect the wire cable 2.
The structure is such that when the second etc. are fixed, it is held in place, and the upper end fixing part 4 is formed by these members.

In the above-mentioned fixtures for circuit boards such as electric wires, Figs.
The embodiment shown in FIG. 24 is merely an example, and any other structure having a structure for fixing cables such as electric wires can be used as the upper end fixing part in the present invention.

In the four embodiments described so far, only two elastic plates in the longitudinal direction and the perpendicular direction of the elastic plate faun plate 7, or two more in the longitudinal direction of the elastic plate faun plate 7, for a total of four pieces, are collapsed. Although examples are given in which ribs are provided for prevention, in cases where the lateral force is strong or not, it is necessary to provide ribs for prevention of falling by 2' pieces in the direction perpendicular to the longitudinal direction of the elastic plate faun plate 7. The effect can be fully satisfied even with the provision of .

Therefore, it is not always necessary to provide four ribs for preventing falling; in some cases, only two ribs may be provided in the longitudinal direction of the elastic plate faun plate 7, or only two ribs may be provided in the direction perpendicular to the longitudinal direction of the presser plate 7. good.

It goes without saying that the tipping-preventing ribs may have any shape other than the triangular fin-like shape shown in the figure, as long as it has the effect of preventing tipping.

As described above, in the circuit board fixture of the present invention, the upper end fixing part and the lower base are connected by at least one support, and the lower base is integrally attached with an elastic member for fixing it to the board. At the same time, the pillar has a structure in which multiple ribs are provided to prevent it from falling, so when used as a spacer to maintain space between boards or as an electric cable fixing device,
It has the advantage that it has added strength against horizontal loads or torsional loads applied to the substrate, and is resistant to collapse even under these loads.

Furthermore, the elastic member integrally attached to the lower base is
As described in each of the above embodiments, the board is held from both the front and back sides by the dovetail-shaped elastic coupling piece having both ends biased outward and the bow-shaped elastic plate Faun's piece. When inserted into the fixing hole, it will fit securely and will not come off the board.

Further, due to the vertical elastic force of the bow-shaped elastic plate faun, it is possible to securely fix the board even if the thickness of the board changes.

[Brief explanation of the drawing]

Figures 1 to 5, Figures 6 to 11, Figures 12 to 17
The figure shows a spacer and a modification thereof among the circuit board fixtures of the present invention, and FIGS. 18 to 24 show examples of clips for holding electric wire cables and the like. In Figs. 1 to 5, Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a bottom view, Fig. 4 is a plan view, Fig. 5 is a side view showing the state of use, and Fig. 6 is a side view. ~ In Fig. 11, Fig. 6 is a front view, Fig. 7 is a side view, Fig. 8 is a bottom view, Fig. 9 is a plan view, and Fig. 10 is a cross section taken along line xx' in Fig. 7. Figure 1
Figure 1 is a side view showing the state of use; in Figures 12 to 17, Figure 12 is a front view, Figure 13 is a side view, Figure 14 is a bottom view, Figure 15 is a top view, and Figure 16 is a front view; Y-Y in Figure 13
Figure 17 is a perspective view showing the state of use;
8 to 24, FIG. 18 is a front view, FIG. 19 is a side view, FIG. 20 is a bottom view, FIG. 21 is a plan view, and FIG.
The figure is a perspective view of the upper end fixing part, and Figure 23 is the zz of Figure 19.
24 is a side view showing the state of use. 1... Upper base, 2... Flange part,
3...Joining hole, 4...Fixing part, 5...
...Lower base, 6, 6 a, 6 b, 6 C,
6d... Support column, 7... Elastic plate Faun piece, 8... Notch, 9... Connecting plate,
10... Connecting piece, 11... Elastic coupling piece, 12.13, 23.24... Rib for preventing falling, 14.15... Mounting hole , 16a, 16b, 1
6C516d...Reinforcement rib, 17...
Upper base, 18, 19...Curved piece, 20, 21
......Elastic clamping piece, 22...Electric wire cable, A...Lower board, B...Upper board.

Claims (1)

[Scope of utility model registration request] A fixed part at the upper end, a lower base provided in opposition to the upper end, at least one pillar connecting these parts, an arcuate elastic plate faun piece provided below the lower base, and It consists of a connecting plate facing downward from the center, and a dovetail-shaped elastic connecting piece whose left and right ends connect to the connecting plate provided opposite the back surface of the elastic plate faun plate. A fixture for a circuit board, which is provided with ribs, each of which is integrally molded with a resin.