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Патент USA US3033975

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May 8, 1962
E.
COMBI
A
. DILLON
ION F0
RESPONSIVE STRUCTURE
SWITCH MOUNTING RECEPTACLE
3,033,966
Filed Oct. 22, 1959
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INVENTOR.
Fl 6.4.
EDWIN I. DILLON
BY
W £ pwzf
'
ATTORNEY? ’
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auras
Patented May a, 1962
2
3,033,966
COMBINA'HON FGRCE RESPONSIVE STRUCTURE
AND SWITCH MOUNTING RECEE'TACLE
Edwin I. Dillon, Van Nuys, Calif., assignor to W. C.
Dillon 8: Qompany, Inc., a corporation of California
-
Filed Oct. 22, 1959, Ser. No. 848,059
7 Claims. (Cl. 208-172)
tion force responsive structure and switch mounting re
ceptacle including a body functioning as ‘a fulcrum. A
flexure arm extends from and is integrally formed with
the body. The ?ex-ure arm functions as a lever and is
designed for a given bending or. arcuate movement in re
sponse to a given actuating force at a given point thereon.
A mounting wall is integrally formed with and extends
from the body. The mounting wall is adapted to retain
the switch in a position for. operating engagement by the
This invention broadly relates to a combination force
responsive structure and switch mounting receptacle and 10 arm as a consequence of the given movement of the arm.
more particularly concerns an integral structure which
Mounting means are further provided for coupling the
may be employed not only for the purpose of convenient—_
switch to the mounting wall.
ly and ruggedly mounting a switch unit thereon but also
A better understanding of the present invention will.
as a means of actuating the switch as suclrl‘ Furthermore,
be
had‘ by reference to the drawings, showing merely an
the combination force responsive" structure and switch
illustrative embodiment, and in which:
mounting receptacle of the present invention is designed
FIGURE 1 is an isometric view of the combination
as a means of converting relatively large actuating forces
or masses into a relatively small, controlled movement of
a ?exing member for the purpose ofv actuating a sensitive
switch, relay or equivalent electrical or mechanical device.
At the present time, many different types of snap-action
switches (for example, micro-switches or the like), are
available on the market. In most instances, these’
switches embody levers, leaf springs, spiral springs or simi
lar biasing elements with a force resistance approximat
ing in degree afew ounces or pounds. These switches
are designed to function directly as a consequence of the
load imposed thereon and consequently are limited in ap
plication to environmental conditions in which'relatively
force responsive structure and switch mounting receptacle
according to the present invention;
‘
‘
FIGURE 2 is. a side elevational view of the combined
force responsive structure and switching mounting recep
tacle of FIGURE 1, illustrating a switching unit mounted
thereon;
FIGURE 3 is 'a modi?cation of the combined force re
sponsive structure and switch mounting receptacle as
shown in FIGURES l and 2; and,
V
FIGURE 4 is a sectional view of the force transmitting
contact button used in conjunction with the combined
force responsive structure and switch mounting receptacle
'
30 as shownin FIGURES l and 2.
low quantity forces are applied.
Referring now to the drawings, there is shown in FIG
Devices available on the market for actuating a switch
URE 1 a combined force responsive structure and switch
in response to a heavy load are relatively cumbersome
mounting receptacle generally designated by the numeral
and usually embody several inter-connected elements oc
10. The structure or receptacle 10, as it may hereafter
cupying a relatively large amount of space and present
be alternately referred to, includes a mounting base 11
ing weight problems and mounting problems, particular
integrally formed therewith. The mounting base 11 em
ly signi?cant in aircraft and missile applications.
bodies opposing end portions 12 and 13 designed for con
It is therefore one object of the present invention to
venient mounting of the structure 10 on the particular
provide a combined force responsive structure and switch
apparatus in conjunction with which it is _to be employed;
mounting receptacle, which will enable a relatively sensi
The end portion 12 has a threaded hole 14 extending
tive switch to be mounted and actuated in response to
therethrough for receiving a screw or the like; similarly,
large as well as small forces or masses; '
'
' <
the end portion 13 includes a threaded screw hole 15.
Another object of the present invention is to'provide' a
The structure 1t} further includes a body portion 16,
combined force responsive structure and switch mount
which functions as a stable supporting portion orful
ing receptacle which may be readily modi?ed to accom
crum. Integrally formed with and extending from the
modate either compressive or tensional loads. a 7
body portion 16 is a flexure arm 17, "which functions as
Another object of the present invention is to provide a
a lever relative to the body 116. The arm 17 de?nes in
combined force responsive structure and switch receptacle
the upper sidewalls thereof an elongated slot 18 designed
which may be readily precisely adjusted to effect actu
to receive a contact button 19, the latter functioning as
ation of a switch in response to any given external force
a force transmitting member.‘ Theslot 1S and contact
varying from a few ounces to many thousands of pounds.
button 19 co-function together to enable slidable position
A further object of the present invention is to provide
ing of the contact button to various positions along vthe
a combined force responsive structure and switch mount
arm 17 relative to the body 16. Towards this end, differ
ing receptacle which may be manufactured economically
ent constructions may be employed, although the pre
to meet stringent space requirements, while still having 55 ferred construction is shown in FIGURE 4.
'
a high capacity rating; and further, which may be pro
Thus, in FIGURE 4, as indicated, the contact button
duced with a relatively low overall weight.
19 may be provided with a nut 20. To accommodate
A still further object of the present invention is to pro
the nut 28, the slot 18 may be of an inverted T-shape.
vide a combined force responsive structure and switch
Thus, by loosening the screw or contact button 19, the con
mounting receptacle which not only provides a conven
tact button 19 may be slid along the slot 18 with nut 20
ient and simple means of mounting a switch thereon, but
to the particular position or point desired and thereafter
which further provides an overall shielding structure for
tightened.
the switch together with an integral member for actuating
The body 16 has integrally formed therewith a mount
the switch through a wide range of loads.
ing wall 21 which extends outwardly from the body 16 '
Still another object of the present invention is to pro
in the same direction as the arm 17. Mounting wall 21
vide a combined force responsive structure and switch
is spaced rearwardly from the front face of the body 16
mounting receptacle which, by varying the dimensions of '
so as to de?ne with the body 16 and the mounting base
the various portions thereof, may be designed for switch
11' a recessed area or volume for mounting of a switching
operation in response to either a given load or a‘given
assembly.
‘
V
travel of a member.
'
-
7
These and other objects and advantages of the present
invention are generally attained by providing a combina
The mountingwall 21 de?nes therein two spaced slots
22 and 23qfor receiving the mounting screws of the switch
assembly, as will be hereafter explained. The mounting
37,033,966
.
,
4
-,
V
.
a‘ ?exure ar-m731 de?ning therein a. plurality of threaded
wall 21 further ‘embodies an upper sidewall 24 which tier-V
minatesfat its outer end in a projection portion 25. The
projection'portion 25 serves as a stop’ limiting downward
openings 32, 33, and 34.
" . At its outer ‘end, the ?exure arm 31 is provided with an
oversized bore 35 designed to receive ‘a'bolt 136. The
bolt ‘36 is threaded into a projection portion-37 ,(corre
sponding to the projection portion 25 of. FIGURES l
and 2). The projection portion '37 .forms apart of a
mounting wall 38 similar to the mounting: Wall 21 of
movement of the ?exure arm .17. At‘ its other end, the upper sidewall 24 is radiused as at 25 into the body '16.
As clearly shown in the view of FIGURE 2, a micro
switch assembly 27 may be positioned between the arm
17 and the mounting base 11 and retained by screws (not
shown) coupling the switch 27 to the mounting wall 21
' as through slots '22 and 23. With such construction, the
FIGURES l and 2.
‘
Mounted in one of the threaded openings 32-34, for
' arm '17 _, at corresponding different distances from the
example 33, is'shown an eye bolt 39 or the like which
may be used for coupling to a tensile load. With such a
ture and switch mounting receptacle of the present in‘
?guration,’ the particular switching unit employed would
switch 27 may be positioned at-various points below the
construction, instead of the arm 31 bending inwardly,
body or fulcrum 16. ' The switch 27 preferably includes
it would bendroutwardly in response to a tensile load
a‘ switch button 29 positioned a given distance below
the no-load position of the arm 17.
15 whereby the head of the bolt '36 would function as a stop
with the arm.31 moving relative thereto. In such a con
' The operation ‘of the combined force responsive struc
be designed to have its contact {button positioned in
engagement with‘the arm 31, which engagement would
be released after the’ arm 31 had bent outwardly a given
distance. It will be appreciatedfrom the foregoing that
_ vention i'sj'readily apparent from the above description.
Referring try-FIGURE 2,1 the actuating fo'rcewould be
I applied to the contact button 19 toin turn e?ect a given
bending movement to the arm 17.. The quantitative meas
many variations and modi?cations may be made to the
urement of the moment imposed :wouldbe, dependent upon
combined force responsive and switch mounting recep
' the force applied, the position of the button 19 from the
body 16, and the dimensions and material characteristics
tacle of the present invention without departing from the '
of the arm 17. In consequence of the actuating force, im
posed on the button 19, and the resultant moment pro
‘It should be’ noted that with the structure of the present
spirit, and scope thereof.
. duced in‘the arm 17, the arm 17 would bend or move 7
through an arcuate distance relative to the body 16. . As '
soon as the arm 17 engages or contacts the switch but
open or close an electric circuit connected through the
28.
‘
'
invention, the‘ switch unit'27 is relatively shielded and
protected by the force responsive body 10 as such and
may not be subject to overloads because of the projec
tion or stop portion 25. ’ Furthermore, in the event ‘of
7. normal failure ofrthe switch unit27, it may be readily
ton 29,-‘the microswitch 27 would be actuated to in turn
terminals
.
maintained and conveniently replaced. In addition, it
‘
By positioning the switch 27 atrdiiferent points with ‘ a will be evident that the unit may be made in very small
sizes, to accommodate awide range of. loads depending
respect to the slots 22 and 23, the particular location of
upon ‘the .designjand material speci?cations of the ?ex
theswitch button 29 could be varied relative to the length.
ure arm 17; Furthermore, different types of adjust
of the arm 17. Thus, if the switch button 29 were
ments may be made to accommodate loads ranging from
located closer to the ‘body 16, a greater movement of
the arm 17 would be'required in order to actuate the ' a few ounces to severalthousand pounds asjheretofore V
mentioned.
switch 29. The projection portion 26 orrstop functions
What is claimed
as ‘an overload means to limit movement of the arm 17 40
l. The combination comprising: a force responsive.
to a particular degree such that the micro-switch '27 can
structure and switch mounting receptacle including a
not be damaged; ‘ V
'
v '
body functioning as a fulcrum; a switch; a ilexure arm
It will vfurther be appreciated that by varying the
extending ,from and integrally formed with a ?rst end
position of the contact button 19 along'the length of the
slot 18 di?erent forces will be required to actuate the 45. portion ofsaid body, said arm functioning as a lever and
being‘designed for a given bending movement in response
7 switch button 29.
.
'
to a given actuating force at a given point thereon, said
~Thercombined 'force responsive structure and switch
arm being at least as wide as said-switch to eifectively
. mounting receptacle of the present invention not only can
be employed in. applications for» controlling the amount
shield same; a mounting wall integrally formed with and
chineelement. Thus, in applications involving- control
operating engagement bysaidarm as a consequence of
of forcev or mass exerted by a member but also Vfor con 50 extending from a sidewall of said body, said mounting
wall being adapted to retain said switch in a position for
trolling the stroke or movement, for example, of a ma-‘
said given - movement’; a ?at base member ‘integrally
oi the stroke or distance whichv a member moves, the
‘formed with and extending from a second end portion
arm' 17 may be designed to have a thincross section such
that'a small amount of force would be required to bend it. 55 of said body, said base member functioning to receivingly
support said switch and, mounting means for coupling:
Thereafter, theswitching unit .27 would be positioned at
a particular point such that a given arcuate movement of
the arm 17 at that point would effect actuation of the
switch ' button 29 in correspondence with the desired
stroke of the machine element or equivalent member."
. In consequence, it will be appreciated that the present '
invention may be employed in-co'njunction with diverse‘
force, mass, and stroke controlling applications. - Such
applications include scale devices; sorting apparatus,
dynamometer units, quality control components and the
said switch to said mounting wall.
2. A combination force" responsive structure and
switch mounting receptacle, according to. claim 1, and
contact means connected to said arm for transmitting
said actuating force, said contact means being movable
to various coupled positions relative to said ?exurearm '
V for varying said given point and establishing di?erent.
bending movements for said arm.
n
3. A combination Yforce' responsive structure and
switchmounting receptacle, according to claim 1, in
which said mounting means enables'iadjustable position
respect to said arm.
struction of the unit in its application to compressive ing4.ofA saidrswitch‘rwith
combination force responsive structure and'switch
loads, the unit or combined force responsive"structure
mounting receptacle, according to claim 1, and overload
and switch mounting receptacle of the present invention ' 70. means coupled to said mountingwall limiting movement
may readily be modi?ed for use in conjunction with ten
of said ?exure arm with respect to said wall.
,
like.
i’
'7
i
'
Although FIGURES 1 and 21illu'strate a preferred con-i
sileloads.
;
.Thus, referring to
-
"
3,
‘
is shown
'
I
‘
5. A combination force responsive structure and switch
mounting receptacle, according to claim 4, in which said‘
portion 30 similar ‘to the body portion 16 of. FIGURESL; ’ overload means'comprises an integral projection portion»
7 Y1’ and 2. The body portion 30 has extending therefrom 75 of said mountingwall. '
5
8,083,966
6
6. The combination comprising: a force responsive
structure and switch mounting receptacle including a
body functioning as a fulcrum; a switch; a ?exure arm
ber functioning to receivingly support said switch and,
mounting means for coupling said switch to said mount
'
extending from and integrally formed with a ?rst end
portion of said body, said arm functioning as a lever and .
being designed for a given bending movement in response
to a given actuating force at a given point thereon, said
?exure arm de?ning a slot therein extending in a direc
tion to and from said body; a contact button adapted for
slidable movement in said slot, said contact button being
designed to receive said actuating force; a mounting wall 10
integrally formed with and extending from a sidewall of
said body, said mounting wall being adapted to retain
said switch in a position for operating engagement by
said arm as a consequence of said given movement; a
?at base member integrally formed with and extending 15
from a second end portion of said body, said base mem
ing I wall.
7. A combination force responsive. structure and switch
mounting receptacle, according to claim 6, and at least ‘
one slot in said mounting wall for adjustable positioning
of said switch.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,454,341
2,474,945
Repka ______________ __ Nov. 23, 1948
Johnson ______________ .__ July 5, 1949
2,691,081
2,748,219
2,789,176
Weber ________________ __ Oct. 5, 1954
Buchanan ___________ .. May 29, 1956
Mercier ____________ __ Apr. 16, 1957
2,929,901
~ Bloch ______________ __ Mar. 22, 1960
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