JP2001056703A - Control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device which easily fixes and positions a substrate and its recyclability is satisfactory. SOLUTION: A die-cast chassis 1 is provided with a projection 1A so as to position a printed circuit board 2. On the projection 1A of the die-cast chassis 1, a horizontal hole is bored at a position higher than that of the printed circuit board 2 and by inserting a clip 3 into the hole, the printed circuit board 1 can be simultaneously fixed and positioned so that man-hour for the assembly of the control device can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device used for a servo motor control device and the like, and more particularly to a structure for fixing a substrate such as a printed circuit board.

[0002]

2. Description of the Related Art FIG. 9 is an example of a sectional view showing an internal structure of a conventional control device, wherein 1 is an aluminum die-cast chassis (base), 2 is a printed circuit board (substrate), and 6 is control of the control device. A resin cover (cover) covering the portion, 7 is a screw, and 8 is a projection formed on the die casting chassis 1 as a base for positioning the printed circuit board 2.

In a conventional control device, a printed circuit board 2 having a screw insertion hole and a projection insertion hole is provided on a die casting chassis 1 provided with a screw tap and a projection 8, and the projection 8 of the die casting chassis 1 is provided in the projection insertion hole. The screw is inserted into the screw insertion hole and screwed into the screw tap to be screwed and attached, and the hole formed in the resin cover 6 is fitted into a projection formed on the side of the die casting chassis 1. And a resin cover 6 attached to the die casting chassis 1.

[0004]

In the conventional control device,
When the printed circuit board 2 is mounted, the position after the mounting of the printed circuit board 2 is shifted only by screwing. Therefore, the projection 8 for positioning the printed circuit board 2 from the die casting chassis 1 is formed. Therefore, it is necessary to perform fixing and positioning individually, and it is screwed. When this control device is discarded, separation of the die casting chassis 1 and the printed circuit board 2 is troublesome, and there is a problem in recyclability. .

Further, since the mounting of the printed circuit board 2 to the die casting chassis 1 and the mounting of the resin cover 6 to the die casting chassis 1 are performed in separate steps, there has been a problem that the number of assembling steps is increased.

[0006] Further, since the mounting position of the printed board 2 in the vertical direction differs for each unit in the conventional control device due to the components arranged in the space between the die cast chassis 1 and the printed board 2, several types of die casting chassis are required. However, there is a problem that hinders sharing of parts.

Further, since the projections 8 need to be provided for positioning the printed circuit board 2, the contact surface between the printed circuit board 2 and the die-cast chassis 1 becomes large, which hinders the pattern design. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a control device which can easily fix and position a substrate and has good recyclability.

Another object of the present invention is to provide a control device capable of simultaneously attaching a substrate to a base and attaching a cover to the base, thereby reducing the number of assembly steps. .

Another object of the present invention is to provide a control device that can share a base between a plurality of control devices.

Still another object of the present invention is to provide a control device capable of improving the efficiency of pattern design.

[0012]

In a control device according to the present invention, a plurality of substrate supporting projections are provided upright, and a through hole is formed in the projection in a direction intersecting the direction in which the projections are provided. A base having a clip insertion hole formed at a position corresponding to the standing position of the projection, and a clip having elasticity, wherein the projection of the base is inserted into a through hole of the substrate, and the clip Are fixedly inserted into the clip insertion holes of the protrusions located at positions protruding from the substrate, and the substrate is fixed to the base.

The control device according to the present invention also includes a base having a plurality of substrate supporting projections erected thereon, and a clip insertion hole formed in the projection in a direction intersecting the erected direction of the projections; A cover having a through-hole formed at a position corresponding to the standing position of the protrusion, an elastic clip, and a mounting portion having a through-hole formed at a position corresponding to the protrusion, a cover covering the control unit; Inserting the projection of the base into the through hole of the substrate and the through hole of the cover, and inserting the clip into the clip insertion hole of the projection located at a position protruding from the substrate and the cover so as to be able to be inserted and removed. ,
The substrate and the cover are fixed to a base.

Further, in the control device according to the present invention, in the control device, a plurality of clip insertion holes of the protrusion are provided at desired intervals in an axial direction of the protrusion, and the board is sandwiched in the clip insertion hole. The board is fixed at an arbitrary height position by inserting clips.

The control device according to the present invention is the above control device, wherein a height adjusting spacer having electrical insulation is interposed between the base and the substrate.

Further, the control device according to the present invention is the above control device, wherein an O-ring having electrical insulation is interposed between the base and the substrate or between the spacer and the substrate. .

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. That is, FIG. 1 is a sectional view of the internal configuration of the control device according to the first embodiment of the present invention, and FIG. 2 is a top view of FIG. 1 showing a state where a clip is mounted on a printed circuit board (substrate) and a state where the clip is mounted. It is. In the figure, reference numeral 1 denotes a die casting chassis (base) for cooling an assembly of power components for controlling a motor, and protrusions 1A having a predetermined height are provided at four corners of the die casting chassis 1 so that the printed circuit board 2 can be positioned.
Are provided integrally at the same height. In addition, the protrusion 1A of the die-cast chassis is located at a position slightly above the upper surface of the printed circuit board 2 (a position considering the thickness of the printed circuit board 2).
A horizontal clip insertion hole is formed.

Reference numeral 2 denotes a printed circuit board (substrate) having through holes formed at four corners for inserting the projections 1A. Reference numeral 3 denotes a substantially U-shaped clip having elasticity for fixing the printed circuit board 2 as shown in FIG. 2, one side of which is linear, and the other side is a projection 1 of the die casting chassis 1.
The clip is bent so as to conform to the outer peripheral shape of A, and has a substantially annular grip so that the clip can be easily inserted into and removed from the horizontal clip insertion hole. It should be noted that the shape of the clip 3 is not limited to the above, and the shape is not limited as long as it can be easily inserted into and removed from the clip insertion hole. The clip 3 is preferably made of metal in consideration of vibration during transportation and the like, but may be made of resin as long as it has considerable mechanical strength.

In this control device, the printed board 2 is first inserted into the through hole of the printed board 2 by inserting the projection 1A of the die cast chassis 1 into the through hole of the printed board 2.
Then, as shown in FIG. 2, the printed circuit board 2 is die-cast by inserting the linear portion of the clip 2 into the horizontal clip insertion hole formed in the projection 1A of the die-cast chassis. It is fixed to the chassis 1. In this state, the clip 3 has elasticity,
In addition, since the projection is bent so as to match the outer peripheral shape of the projection 1A of the die casting chassis 1, the bent portion matches the outer periphery of the die casting chassis 1, and the clip 3 does not easily fall off from the die casting chassis 1. As a result, the positioning and fixing of the printed circuit board 2 can be made extremely easy, and when the present control device is disposed of, the printed circuit board 2 and the die casting chassis 1 can be easily separated only by pulling out the clip 3. Therefore, the recyclability is good.

Embodiment 2 FIG. 3 is a sectional view of the internal configuration of a control device according to Embodiment 2 of the present invention.
In the second embodiment, the projection 1A of the die casting chassis 1
Further, a plurality of horizontal clip insertion holes 1B are formed at predetermined intervals over the entire length. Other configurations are the same as those in the first embodiment.

As a result, the clip 3 is inserted into the clip insertion hole 1B located at the position where the printed circuit board 2 is to be mounted, the printed circuit board 2 is disposed thereon, and the clip inserted above the printed circuit board 2 is inserted. By inserting the clip 3 into the hole 1B, the printed circuit board 2 can be fixed at an arbitrary position, and when a control device having only a different mounting height of the printed circuit board 2 is manufactured, the die casting chassis 1 is required. Can be shared.

Embodiment 3 FIG. FIG. 4 is a sectional view of the internal configuration of the control device according to Embodiment 3 of the present invention.
In the figure, reference numeral 4 denotes a cylindrical electrically insulating resin printed circuit board holder (height adjusting spacer) having a predetermined length as shown in FIG. Other configurations are the same as those of the second embodiment.

4 and 5, the printed board holder 4 is passed through the projection 1A of the die casting chassis 1, the printed board 2 is disposed thereon, and the clip is inserted into the clip insertion hole 1B located above the printed board 2. By fixing the printed circuit board 3, the printed circuit board 2 is fixed. As a result, by changing the height of the printed circuit board holder 4, the printed circuit board 2 can be fixed at an arbitrary height position, and a control device that differs only in the mounting height of the printed circuit board 2 can be realized. When manufacturing, the die casting chassis 1 can be shared. Further, if the contact position of the printed circuit board holder 4 with the printed circuit board 2 is formed in an arc shape protruding outward, the contact surface with the printed circuit board 2 is reduced, and the layout area of the pattern of the printed circuit board 2 is reduced. This makes it possible to obtain a wider pattern than that of the first pattern, and it is possible to increase the efficiency of pattern arrangement.

Embodiment 4 FIG. 6 is a sectional view of the internal configuration of the control device according to Embodiment 4 of the present invention.
In the figure, reference numeral 5 denotes an electrically insulating resin O-ring.
Other configurations are the same as those in the first embodiment.

In FIG. 6, an O-ring 5 is attached to the projection 1A of the die casting chassis 1, and a printed circuit board 2 is
Is arranged, and the clip 3 is inserted into the clip insertion hole located above the printed circuit board 2, whereby the printed circuit board 2 is inserted.
To fix. As a result, since the O-ring 5 has a smaller contact surface with the printed circuit board 2 than the die-cast chassis 1 or the printed circuit board holder 4, the pattern layout area of the printed circuit board 2 is smaller than that shown in the first embodiment and FIG. It is possible to take a wider area, and it is possible to increase the efficiency of pattern arrangement.

Note that, as shown in FIG.
The fourth embodiment can be combined with that shown in FIG. 4 by arranging the O-ring 5 on the printed circuit board holder 4 for performing the height adjustment.

Embodiment 5 FIG. FIG. 8 is a sectional view of the internal configuration of a control device according to Embodiment 5 of the present invention.
In the fifth embodiment, a resin cover 6 which covers the entire control device is provided with a mounting portion 6A extending inward and having a through hole into which the projection 1A of the die casting chassis 1 is inserted.
Are integrally formed. Although not shown, a clip insertion hole for inserting the clip 3 from outside is formed in the resin cover 6 at a clip insertion position. Other configurations are the same as those shown in FIG.

In FIG. 8, the printed board holder 4 is passed through the projection 1A of the die casting chassis 1, and the O-ring 5 and the printed board 2 are arranged thereon. Further, the resin cover 6 is attached by inserting the projection 1A of the die casting chassis 1 into a through hole formed in the attachment portion 6A of the resin cover 6. At this time, the projection 1C formed on the side of the die casting chassis 1 fits into the hole 6B formed on the side of the resin cover 6. Then, the printed circuit board 2 and the resin cover 6 can be fixed at the same time by inserting the clip 3 into the projection 1A of the die casting chassis 1 through the clip insertion hole formed in the resin cover 6.

In each of the embodiments described above, a printed circuit board is used as a board. However, a large current board manufactured by attaching a conductive pattern having a considerable thickness to an electric insulating board is described. Needless to say, the present invention can be applied.

[0030]

As described above, according to the present invention,
A base on which a plurality of substrate supporting projections are erected, and a through hole is formed in the projection in a direction intersecting the erection direction of the projection, and a clip inserted into a position corresponding to the erected position of the projection A substrate having a hole formed therein, and a clip having elasticity, wherein the projection of the base is inserted into a through hole of the substrate, and the clip is inserted into a clip insertion hole of the projection located at a position protruding from the substrate. Since the board is fixed to the base by being inserted so that it can be inserted and removed, positioning and fixing of the board can be performed simultaneously and easily, and the number of assembling steps and time can be reduced. Also, when the control device is disposed of, the substrate and the base can be easily separated only by pulling out the clip, so that good recyclability can be obtained.

According to the invention, there is provided a base on which a plurality of substrate supporting projections are erected, and a clip insertion hole is formed in the projection in a direction intersecting with the erection direction of the projections.
A cover having a through-hole formed at a position corresponding to the standing position of the protrusion, an elastic clip, and a mounting portion having a through-hole formed at a position corresponding to the protrusion, a cover covering the control unit; Inserting the projection of the base into the through hole of the substrate and the through hole of the cover, and inserting the clip into the clip insertion hole of the projection located at a position protruding from the substrate and the cover so as to be able to be inserted and removed. Since the substrate and the cover are fixed to the base, positioning and fixing of the substrate can be performed simultaneously and easily, so that the number of assembling steps and time can be reduced.
Also, when the control device is disposed of, the substrate and the base can be easily separated only by pulling out the clip, so that good recyclability can be obtained. Furthermore, the mounting of the board to the base and the mounting of the cover to the base can be performed simultaneously, which leads to a reduction in the number of assembling steps of the control device.

According to the present invention, a plurality of through holes for the projections are provided at desired intervals in the axial direction of the projections, and clips are inserted into the through holes so that the substrate is sandwiched between the projections. In addition to the above-mentioned effects, the upper and lower mounting positions of the substrate can be freely changed, which leads to an improvement in the degree of freedom in the external appearance design and the internal design of the device. In the case of manufacturing a control device having a different mounting height of the board, the base can be shared among a plurality of control devices.

According to the present invention, since the height adjusting spacer having electrical insulation is interposed between the base and the substrate, in addition to the above-described effects, the upper and lower mounting positions of the substrate can be freely set. Can be changed to improve the degree of freedom in equipment external design and internal design. In the case of manufacturing a control device having a different mounting height of the board, the base can be shared among a plurality of control devices.

Further, according to the present invention, an electrically insulating O-ring is interposed between the base and the substrate or between the spacer and the substrate. The contact surface between the base or the substrate and the spacer is reduced, and the efficiency of pattern design can be increased.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a control device according to a first embodiment of the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a sectional view of a control device according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a control device according to a third embodiment of the present invention.

FIG. 5 is an external view of a printed circuit board holder used in Embodiment 3 of the present invention.

FIG. 6 is a sectional view of a control device according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a control device showing a modification of the fourth embodiment of the present invention.

FIG. 8 is a sectional view of a control device according to a fifth embodiment of the present invention.

FIG. 9 is a sectional view showing an internal configuration of a conventional control device.

[Explanation of symbols]

 Reference Signs List 1 die-cast chassis (base) 2 printed circuit board (board) 3 clip 4 printed circuit board holder (spacer) 5 O-ring 6 resin cover (cover)

Claims (5)

[Claims] 1. A base on which a plurality of substrate supporting projections are erected, and a through hole is formed in the projection in a direction intersecting the erection direction of the projection, and a base corresponding to the erected position of the projection. A substrate having a clip insertion hole formed at a position to be inserted, and an elastic clip, wherein the projection of the base is inserted into the through hole of the substrate, and the clip is located at a position protruding from the substrate. A control device characterized in that the substrate is fixed to a base by being removably inserted into the clip insertion hole. 2. A base on which a plurality of substrate supporting projections are erected, and a clip insertion hole is formed in the projection in a direction intersecting with the erection direction of the projections. A base plate having a through hole formed at a corresponding position, a clip having elasticity, and a mounting portion having a through hole formed at a position corresponding to the projection, a cover for covering a control unit, The projection is inserted into the through hole of the substrate and the cover, and the clip is removably inserted into the clip insertion hole of the projection located at a position protruding from the substrate and the cover. A control device characterized by being fixed to the device. 3. A plurality of clip insertion holes for the projections are provided at desired intervals in the axial direction of the projections, and clips are inserted into the clip insertion holes so as to sandwich the substrate, so that the substrate is at an arbitrary height. The control device according to claim 1, wherein the control device is fixed at a position. 4. The control device according to claim 1, wherein a height adjusting spacer having electrical insulation is interposed between the base and the substrate. 5. An electric insulating O-ring is interposed between a base and a substrate or between a spacer and a substrate. Control device.