|United States Patent
December 13, 1983
Electronic component mounting
A mounting bracket supports electronic components, particularly a plurality
of resistors in a parallel array. The mounting bracket is secured to a
printed circuit board to which the resistors are attached in a
predetermined circuit arrangement. The mounting bracket has cut-outs
defined by oppositely disposed ears between which the resistor is forcibly
placed. The mounting bracket forms a means for holding the resistors to
facilitate attachment to the printed circuit board and furthermore forms a
permanent support therefor so as to substantially eliminate detachment of
the resistors due to vibration or other causes.
Scholz; Donald T. (13 Rich Valley Rd., Wayland, MA 01778)
August 17, 1981|
|Current U.S. Class:
||361/825; 248/310; 338/197; 338/320; 361/773; 361/810 |
|Field of Search:
References Cited [Referenced By]
U.S. Patent Documents
|Foreign Patent Documents|
Primary Examiner: Tolin; G. P.
Attorney, Agent or Firm: Wolf, Greenfield & Sacks
What is claimed is:
1. A mounting apparatus positioning and mounting electronic components such
as high wattage resistors to a substrate board and comprising an elongated
bracket having two elongated legs, means securing one of the legs to the
substrate board including means for positioning the bracket intermediate
predetermined points of attachment of the electronic components, the other
of the legs extending substantially normal to the substrate board and
having spacedly disposed and integral therewith a plurality of pairs of
cut-out ears, each pair of ears extending substantially normal to said
other leg and defining an aperture in the leg which receives a respective
electronic component, said electronic components extending substantially
orthogonally to the length of the bracket and said predetermined points of
attachment including a terminal extending at least one on each side of the
bracket, said ears being positioned to form an aperture width dimensioned
relative to the component width to assure a force-fit of the component
into the aperture.
2. A mounting apparatus as set forth in claim 1 including apertures of
different size to accommodate resistors of different wattage.
3. A mounting apparatus as set forth in claim 1 wherein the bracket is
constructed of a cold rolled steel.
4. A mounting apparatus as set forth in claim 1 wherein said electronic
components are each mounted for engagement with the support bracket at
about the mid-point of the electronic component.
5. A mounting apparatus as set forth in claim 1 wherein the ears are a
small degree angle out of the orthogonal to said other leg to provide an
interference fit between each component and the ears.
6. A mounting apparatus as set forth in claim 5 wherein each component is
of square or rectangular cross-section.
7. A mounting apparatus as set forth in claim 1 wherein there are provided
terminals at each respective end of each electronic component so that the
terminals are one on each side of the bracket.
BACKGROUND OF THE INVENTION
The present invention relates in general to a mounting for electronic
components on a printed circuit board or the like, and pertains more
particularly, to a mounting preferably adapted for supporting resistors on
a printed circuit board. The mounting bracket of this invention is adapted
for positioning a series of resistors and furthermore forms a permanent
mounting to prevent detachment of the resistors due to vibration or other
Electronic components including inductors, capacitors and resistors are
typically secured to a printed circuit board with support being provided
only by the leads on the component itself. However, with larger size
components such as relatively large wattage resistors, problems of
detachment of the resistor from the printed circuit board have occurred.
This is particularly the case when the printed circuit board might be
subjected to any vibrations or other mechanical strain.
Accordingly, it is an object of the present invention to provide a mounting
bracket for an electronic component, particularly a resistor of higher
wattage, and which provides a permanent mount for the resistor adding
support thereto in addition to the support of the resistor provided by the
Another object of the present invention is to provide an improved mounting
for electronic components wherein the component can be mounted simply by a
Still another object of the present invention is to provide an improved
mounting for resistors or the like which is simple in construction, simple
to use, inexpensive to fabricate, and may be fabricated quite easily for
supporting a number of components.
SUMMARY OF THE INVENTION
To accomplish the foregoing and other objects of this invention, there is
provided a mounting bracket which is adapted for supporting electronic
components. In the embodiment described herein there are shown high
wattage electronic resistors that are supported by the mounting bracket.
This mounting is in addition to some degree of mounting that is provided
by the terminals of the resistor itself. The mounting bracket preferably
comprises two right angle elongated legs, one of which is adapted to rest
upon the surface of a printed circuit board. In this connection, means
such as rivets may be used for securing this leg to the printed circuit
board. The resistors are adapted to be positioned orthogonally to the
elongated mounting bracket supported in the other leg of the mounting
bracket. For this purpose the bracket is provided with cut-outs from which
are formed pairs of oppositely disposed ears between which the individual
resistors are mounted. The ears are preferably a few degrees out of the
orthogonal direction so that the resistors are force-fitted into the
cut-out. The ends of the resistors with the terminals attached at the end
extend to either side of the bracket with the terminals extending into the
printed circuit board where they are attached. The end terminals of the
resistor may be attached to the printed circuit board in the conventional
manner usually employing a soldering technique. In one embodiment, 20 watt
resistors are mounted and the bracket is adapted to receive resistors of
different dimension. However, it is preferred that the tops of all
resistors be in line. And in this regard the bracket is thus provided with
different depth cut-outs depending upon the particular resistor that is to
be mounted. The bracket may be constructed of a cold rolled steel and the
ears are preferably formed from the cut-out that is provided so that they
are integral with the bracket.
BRIEF DESCRIPTION OF THE DRAWING
Numerous other objects, features and advantages of the invention should now
become apparent upon a reading of the following detailed description taken
in conjunction with the accompanying drawing, in which:
FIG. 1 is a fragmentary perspective view showing the component mounting
structure of the present invention;
FIG. 2 is a plan view taken along line 2--2 of FIG. 1; and
FIG. 3 is a cross-sectional view taken along line 3--3 of FIG. 1.
Referring now to the drawing, there is shown a preferred form of the
electronic component mounting apparatus of this invention. This comprises
a bracket 10 which is adapted to be supported to a printed circuit board
12 at a proper predetermined location so that the components mounted by
the bracket are in proper position for conductive contact with conductors
on the printed circuit board. In the disclosed embodiment, the bracket 10
is for mounting a series of high power ceramic resistors 14. In the
drawing these are shown as basically in two different sizes although they
may be in a variety of different sizes. Each resistor 14 has end terminals
16, 17 which are secured by a conventional technique to a printed circuit
board. For example, these terminals may simply be soldered to the copper
conductive strips on the printed circuit board.
The bracket 10 may be constructed of a cold rolled steel having thickness
of 0.022.+-.0.002 inch. The bracket is formed with a pair of legs
including a horizontal leg 20 and an upright leg 22. The horizontal leg 20
is fixed to the printed circuit board such as with the use of a series of
rivets 24. Alternatively, arrangements could be used such as the use of a
small bolt or the use of an epoxy glue.
The upright leg 22 is cut-out or punched out in a particular pattern to
provide apertures 28 adapted for receiving the resistor 14. The aperture
28 is formed by integral oppositely disposed ears 30, 31 between which the
resistor is mounted. It is noted in the drawing that each of these ears
extend a relatively small angle out of the orthogonal direction to the leg
22. There is typically provided about a 3.degree. taper. This is provided
so that the resistor can be force-fitted between the ears 30 and 31. The
resistor rests on the surface 32 formed by the cut-out.
The ears are cut directly from the leg or punched out and in this
connection in the drawing there is shown in dotted outline at 34, the
T-shaped cut that is made and from which the ears are formed and may be
bent along the general bend lines 35.
The depth of the apertures may vary depending upon the size of resistor
that is to be mounted. Thus, in the drawing, one series of aperture has a
depth D1 for accommodating a smaller valued resistor while other ones of
the apertures have a deeper depth D2 for accommodating larger wattage
resistors. However, the ends of the terminals 16, 17 regardless of the
size resistor that is employed, terminate at the same height relative to
the bracket so that they are in the proper position with regard to the
printed circuit board.
For the smaller value resistor that is depicted, the width of the aperture
between the ears may be on the order of 0.36 inch. For the larger wattage
resistor the width between the ears may be on the order of 0.49 inch. As
indicated previously, the ears are tapered slightly and are adapted to
have a spacing somewhat less than the width of the resistor so that the
resistor can be inserted and force-fitted between the ears and held
relatively stationary by the ears. Thus, in accordance with the invention
the bracket forms a means by which the resistors are held in position for
attachment to the printed circuit board. Furthermore, the bracket forms a
permanent support for the resistors to maintain them secured to the board
even under high conditions of vibration.
Having described one embodiment of the present invention, it should now be
apparent to those skilled in the art that numerous other embodiments are
contemplated as falling within the scope of this invention. For example,
the resistor receiving apertures may be of varied size and depth. Also,
the bracket may be used for mounting other components such as inductors or
capacitors or even semiconductor components.
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