вход по аккаунту


код для вставки
Dec. 24, 1946.
Filed Dec. l2, 1944
Patented Dec. 24, 1946
Earl J. Baumgardner, Marion, Iowa, assigner to
H. A. Douglas Mfg. Co., Bronson, Mich., a cor
poration of Michigan
Application December 12, 1944, Serial No. 567,810
4 claims.
(Cl. 200416)
This invention relates generally to electric'
switches and more particularly has to do with a
relatively small lever actuated switch preferably
adapted for installation on the instrument panel
or other mounting in an automotive vehicle for
controlling a plurality of electric circuits.
One important object of the invention is to
provide an electric switch embodying improved
means whereby to prevent undue tilting of the
contact means carried by the switch back, guide
means I spaced from the switch back to provide
a chamber 5 within which the actuated means 3
is movable and held substantially against tilt
ing, and operating means 6 in the form of a lever
connected to the actuated means for driving the
Considering the structure more in detail, the
housing I includes a bottom wall l, side Walls 8,
actuated means or bridge means of the switch. 10 and end wallsI 9. The bottom wall 'l carries a
Another object is to provide means for indextubular bearing member I0 which is secured in
ing or locating the switch backpr contact carplace by providing the member with a portion
rier with respect to the switch housing, the inflexing means also serving to reinforce a portion
which projects through a circular opening formed
in the wall and flanging over the portion against
or portions of the carrier.
l5 the inner surface of the wall whereby to per
A further object is to provide improved means
manently secure the member in place, against ro
for predetermining the on and off positions of the
tation. The switch is preferably adapted for in
switch, and means for effecting an eû‘lcient snap
stallation in a panel or other mounting with the
action in connection with said positions.
threaded part of the bearing member Ill pro
A further object is to provide an improved con- 20 iecting forwardly through a hole provided there
nection between the actuated means and the operating means or lever of the switch.
for in the panel so that a nut may be secured
to the bearing for detachably securing the switch
Moreover, an important object is to provide a
in place with the outer extremity of the lever 6
switch consisting of very few parts which may be
extended forwardly for Aeasy manipulation by the
economically manufactured and assembled on a 25 operator of a vehicle. The bearing is preferably
production basis.
provided with means, not shown, cooperating
Other objects and advantages of the inven
with the mounting whereby to prevent rotation
tion will appear after reading the description
of the switch with respect to the mounting.
hereinafter set forth in conjunction with the
The side walls 8 of the housing are preferably
drawing annexed hereto wherein various parts 30 provided with continuations Il which are turned
of the switch are designated by numerals.
inwardly toward each other and against the outer
In the drawing:
surface of the end walls 9 whereby to reinforce
Figure l is a vertical section taken through the
the housing. Each side wall is further provid
switch showing the switch in an inoperative or
ed with a pair of fingers I2 and I3 which coop
of! position:
35 crate with suitable notches I4 and I5, respec
Fig'ure 2 is an end view of the switch with por
tively. provided therefor in the sides of the rec
tions thereof broken away whereby to better il
tangular base portion I6 of the switch back 2
lustrate certain details of construction;
and are clinched over and against the outer sur
Figure 3 is a top view of the actuated means
face of the portion I6 as clearly illustrated in
and associated structure;
40 Figure 4 for permanently securing the switch
Figure 4 is a bottom view of the switch;
back in place. The fingers and notches are of
Figure 5 is a vertical section similar to Figure
such a character that the switch back can be
1 showing the switch in an on or operative posi
with the housing in only one posi
Figure 6 is a top plan view, on a reduced scale,
The switch back is preferably constructed
of the guide means; and
molded insulating material such as Bake
Figure 7 is a side view of a plug conductor ter
lite. 'I'he sides of the base portion I6 are pref
minal adapted for cooperation/with each of the
erably provided with outwardly extending lon
terminal receptacles forming a part of the con
gitudinal abutments Il and the ends with trans
tact means of the switch.
verse abutments I8. All of these abutments are
The switch, among other things, generally in
set back or stepped from the inner face I9 of
cludes a housing I, a switch back or carrier 2
the base portion I6 so as to provide a generally
of insulating material carrying contact means,
rectangular boss portion 2li which projects into
actuated means generally designated 3 carrying
bridge means adapted for cooperation with the 55 the interior of the housing I with the abutments
Il and I8 engaging the free marginal edges of
the side walls 8 and end walls 9 of the housing.
respectively, as clearly illustrated in Figures 1
and 2 to form a` good tight durable connection
ner than the intermediate ply 38, and the latter
thinner than the lower ply 39.
The carrier is provided with a pair of square
shaped notches 42 and 43 adjacent the ends of
sealing off the open side of the switch housing.
The back is provided with a rearwardly extend 5 the carrier between the pairs of ñngers 40 and
' in'g enlargement integral with the base portion
4l, respectively, the notches being formed bycor
I6. 'I'his enlargement is preferably composed of
three connected circular portions, each portion
responding apertures formed in the plies 38 and
39. The carrier is also provided with two round
_ having a cylindrical opening or pocket 2|. The
pockets ‘I4 formed by corresponding apertures in
openings are equally spaced apart on the medial 10 the lower ply 39. The pockets are disposed be
4 line of the back. One of the circular portions
tween and in alignment with >the notches 42
is preferably provided with a projection 22 ex
and 43.
tending along a side thereof so that the person
assembling the switch can quickly determine the
The bridge means is preferably made in the
form of a relatively narrowY elongated metal plate
proper position the switch back is to assume on l5 44 provided with round boss contact portions 45
the housing. This projection thus serves as in
and 46 adjacent its extremities. When the actu
dexing means and at the same time reinforces
ated means is thrown by the lever to the left
the enlargement. The back is also provided with
from its center or intermediate position as illus
a plurality of holes 23 which extend through the
trated in Figure 5, the pair of boss contact por
base portion and communicatively connect with 20 tions ‘45. and 46 of the bridge means will engage
the openings 2l, as clearly illustrated in Figures
the contact surfaces of the pair of rivet contact
1 and 2. The inner planar face I9 of the boss
means 29 and 30, respectively, to close a first elec
-portion 20 is provided with a plurality of round
trical circuit, and when thrown to the right, the
recesses 24. Generally tubular split cylindrical
contact means 45 and 46 will engage the rivet
terminal receptacles 25, 26, and 2l are disposed 25 contacts 28 and 29, respectively, to close a second
in the openings and are secured in place by rivet x circuit and open the first. The ends of the bridge
contacts 28, 29, and 30, with the shank portions
means are narrower than the central portions
of the rivets extending through the holes 23, and
from which the boss contact portions project,
through apertures provided therefor in the trans
and are provided with fingers which cooperate
verse base portions 3l of the receptacles, the ends go with at least a part of the bridge carrier. More
of the rivets -being flanged over against the base
specifically, the fingers 4l formed on the bridge
portions whereby to permanently secure the re
project into the notches ¿i2 and d3. Attention
ceptacles and rivets to each other and to the
^ is directed to the- fact that the thin upper ply 31
switch back. As clearly illustrated, the heads of
-of insulating material backs against the plate
the rivet contacts are inset in the recesses 24 so 85 portion 36 of the actuated means and is not inter
that their contacting surfaces are disposed sub
rupted by any recesses for the fingers of the bridge
stantially iiush with the inner face I9 of the back.
means or with pockets corresponding to the
The terminal receptacles are substantially iden
pockets for helical springs 48. This arrangement
tical in character and each is preferably of a
prevents the fingers of the bridge means from
length so that the4 outer ends of the receptacles 40 engaging the actuated means to cause a` short
are inset with respect to the outer surface 32 of
the enlargement. Each receptacle> is preferably
It will be noted that the lower ply 39 of insu
provided with a detent 33 which is adapted to
lating material forming a part of the bridge car
cooperate with a cove» or groove 34 provided in
rier is the only ply provided with the round pock
the plug conductor terminal 35 when the terminal 4 5 ets ‘Il for the springs 48. The springs are well
is seated in the receptacle. When a terminal is
seated in the pockets and the inner ends abut
properly seated in a receptacle it is resiliently
the intermediate ply 38 of insulating material.
held in place and substantially concealed so that
Obviously, if found desirable corresponding holes
no metal can come in contact therewith or engage
or pockets could be provided in the ply 38 so that
another terminal in an adjacent opening or 50 the inner ends of the'springs would abut the ply'
pocket t'o cause a short circuit. The back is
31. In any event, provision must -be made where
unique in character in that the contact means - by the springs will not engage the actuated means
in their entireties are inset and substantially
to cause a short circuit. The outer ends of the
concealed from view.
The actuated means 3, bridge carrier, and the
bridge means carried -by the carrier will now be
described. The actuated means in part includes
a generally rectangular plate 3S to which is se
cured the bridge carrier consisting of three super
springs seat in the depressions formed by the boss
vcontact portions of the bridge means. The bridge
means is thus well balanced and urged by the
springs in a direction toward the contact means
carried by the carrier 2. .The springs also func
tion to urge’ the bridge carrier and actuated
imposed plies of insulating material 3l?, 38, and 60 means as a unit in an opposite direction against
the 'guide means generally designated Il and the
39. A pair of depending ñngers d@ and a pair
guide means against the bottom wall l of the _
of spaced depending ‘lingers ¿ii formed adjacent
switchV housing. Attention is also directed to the
_the respective ends ci the plate project through
important fact that the springs also operate in
suitable notchesl provided therefor in the plies
constituting the bridge carrier and are bent under 65 conjunction with a larger helical spring 49 asso
ciated with the actuated means fl and the oper
and against the lower ply 39 of insulating ma
ating means or lever 6» whereby to eliminate-vi
teriai' to secure‘tbe parts together as a. unit. The . bration vand assist in maintaining the parts in h
carrier is preferably' constructed of a plurality
their proper operative relationship to obtain the
of‘plies in order to reduce the cost of manufac 70 desired action and results.
_turaandatthe same time provide a set up which f
The plate portion 3d of _the actuated means 3
may be easiiy‘andfnuickìgmcdiñed to take one
is provided .with an upstanding tubular bearing
or a plurality 'of bridge means. v The paies'may
53 centrally located on the medial line of the plaie
portion.V The helical spring 49 surrounds the tu
bodiment of the invention, the top ply 3l is thin- 75 buia;- bearíng ät. with one end of the spring nor
be of the same thichess, but in the present em
mally bearing against the plate portion 36 of the
actuated means and its other end against an en
larged radial annular flange 5I provided adja
cent the inner extremity of the lever 6. The in
ner end of the lever is provided with an annular
-portion 52, the periphery of which is rounded for
to bear against the bottom wall 1 of the switch
housing by the helical springs 48. The spring
49 which surrounds the bearing 50 primarily
serves to eliminate vibration between the operat
ing lever and the actuated means but also func
tions to assist in throwing the actuated means
camming contact with the inner wall or surface
to its various positions.
of the tubular bearing. 'I'hat portion of the le
In view of the foregoing, it should be evident
ver between the enlarged annular portion 5I and
that when the switch lever is in the position illus
the annular portion 52 is such that suiliclent 10 »trated in Figures 1 and 2, the boss contact por
Iclearance is provided when the lever is pivoted
tions 45 and 46 of the bridge means 44 will en
on the pivot 53 projecting through the bearing I0
gage the inner planar face I9 of the switch back.
and through the round intermediate enlargement
When sufiicient pressure is applied to the op
54 of the lever. To provide for additional clear
_erating lever in a left direction the bosses 60 will
ance, the plies 31 and 38 of insulating material
ride out of the detent pockets 6l and the pro
are provided with openings, as indicated in Fig
jection 56 will ride against the tongue-like cam
ures 1 and 2. The lever and spring 49 are the last
portion 64 and into the detent pocket 58. Dur
parts of the switch to be assembled, the spring be
ing this transitory movement the actuated means
ing inserted through the bearing I0 in advance
will tilt very slightly but will be held against sub
of the lever, and when the two are located the 20 stantial tilting. In other words, the guide means
pivot pin 53 is driven into place.
functions to hold the actuated means against un
'I'he plate portion 36 of the actuated means is
due tilting and the operating lever from becom
'also provided with a pair of upstanding round
ing disconnected from the bearing 50 when the
projections 55 and 56 located on the medial line,
switch is operated. As clearly illustrated in Fig
one on either side of and >equally spaced from
ure 5, when the projection 56 is in the seat or
the bearing 50. These projections 55 and 56 are
pocket 58 and the right hand extremity of the
adapted to cooperate with a pair of depressions
actuated means is engaging one end of the hous
forming detents 51 and 58 provided in the base
ing, the boss contact portions 45 and 46 engage
portion 59 of the guide means and assist in lo
the .rivet contact means 29 and 30 to control one
cating and holding the actuated means in its op 30 electrical circuit. When suilicient pressure is ap
erative positions. The plate portion 36 is further
plied> to the lever in a reverse direction the pro
provided with a pair of relatively small upstand
jection 56 will ride out of the pocket 58 and the
ing round boss portions 66 disposed in a line
tongue-like cam portion 64 will assist in throw
transverse to the said medial line with one on
ing the actuated means back to a neutral or
either side and equally spaced from the bearing
inoperative position as illustrated in Figures 1
50. These boss portions 6U are received in in
and 2, whereupon the projections 55 and 56 en
dentations forming detents 6I for holding the ac
gage the cam portions 63 and 64 and the boss
tuated means in an off or inoperative position,
portions 60 will be received in the detent pockets
as illustrated in Figure 1, and otherwise slidably
6I. If greater force is applied to the operating
_engage the bottom surface of the base portion 59 40 lever 6 in this reverse movement the actuated
of the guide means whereby to assist in elimi
means may be thrown completely over so that the
nating friction between the actuated means and
projection 55 will strike the cam portion 64 and
the guide means when the actuated means is
ride into the pocket 51 whereupon the boss con
moved longitudinally within the housing from
tact portions 45 and 46 of the bridge means will
any of its selected positions. 'I'he base 59 of the 45 engage the rivet contact means 28 and 29 to close
guide means is provided with an elongated rec
another electrical circuit. The same action takes
tangular clearance aperture 62 for the tubular , place when the actuated means is thrown back
bearing 50, helical spring 49, and the inner op
to close the first circuit as when throwing from
erating extremity of the lever 6. The material
the first circuit closing position to the second
adjacent each end of the clearance aperture 62 50 circuit closing position. Attention is also di- is preferably upturned so as to provide tongue
rected to the fact that the bridge means 44 will
like cam portions 63 and 64 which are engaged by
tilt or laterally adjust itself to the rivet contact
the projections 55 and 56 whereby to assist in di
means depending on the position of the actuated
recting the latter into the detent pockets 5l and
56. The cam portions 63 and 64 are so con
Having thus described my invention, it is ob
structed and arranged that when the switch is in
vious that various modifications may be made
an inoperative position the projections 55 and 56
in the same without departing from the spirit
are disposed in the clearance aperture and engage
of the invention; and, therefore, I do not wish
the tongue like cam portions 63 and 64 and assist
to be understood as limiting myself to the exact
the bosses 60 and detent pockets 6| to hold the 60 form, construction, arrangement, and combina
actuated means in said inoperative position. The
tion of parts herein shown and described.
guide means 4 is generally channel in shape and
I claim:
includes the generally rectangular planar portion
1. An electric switch including, a housing, guide
59 just referred to and a pair of side walls 65, the
means disposed in said housing providing a cham
latter of which are interrupted by a pair of cor 65 ber, a carrier carrying contact means carried by
responding cutouts 66 adjacent the detent pockets
said housing, actuated means carrying bridge
6I so that the material within which the detent
>means disposed in said chamber and operating
6I are formed is relatively narrow permitting
means for moving said actuated means so that
same to yield to a very slight degree whereby to
the bridge means may engage said contact means,
further assist in providing a positive acting snap 70 said guide means being provided with an opening,
switch. The guide means is of a size to more or
and said actuated means being provided with
less snugly fit in the switch housing so that there
means cooperable with the opening whereby to
is no longitudinal movement of same in the
predetermine at least one position of said ac
housing. The free longitudinal marginal edges
tuated means,.said guide means being further
of the side walls of the guide means are caused 75 provided with locating means cooperable with the
’- '2,419,135
said means on 'said actuated means whereby/to
said housing, actuated means carrying bridge
locate; atrïleast another position of said actuated . " means disposed in said chamber and operating
means formoving said actuated means so that the
.,2,.~An;e1ectric switch including, a hdus1n8..€u1de
meansydisposed in said housing providing a cham
ber,„;a çarrieniacarrying contact means carried by
said-¿housings,actuated means carrying bridge
5 .
bridge means inay engage said contact means.
said guide means being provided with an opening,
and said actuated means being provided with
means cooperable with the opening whereby` to
.predetermine at least one position of said ac
means disposed in said chamber. and means for
operating.;saidvactuated means in said chamber
tuated means.
scrà tlpattsaid1 .bridge means may engage said con 10
4. Guide means
tactmeans;A saidjguide means being provided with
an;„opening„and-fsaid actuated means being pro
vided withfmeansococperabie with said opening for;à maintainingqsaid switch in an open circuit .
fortan electric switch includ--
ing, a channel part, the base of said channel being
provided with a clearance opening for the operat
ing means of the switch, the material adjacent
'the extremities oi?4 said opening being fashioned
position-„said fguide` means also being provided 15 to provide locating means :for the actuated means
with meansg‘cooperable with the said means on
of the switcln and said base portion also being
Saidl actuatedmeans for holding said actuated ` provided with means adapted to be engaged by
means in.;either,of >`two circuit closed positions.
the actuated means for predetermining certain ,5f
e1ectric;_,switch including, a housing, guide
positions of said ,actuated means.
means disposedin said housing providing a cham 20
bert-1a ycarrierqcarryingcontact means carried by
Без категории
Размер файла
659 Кб
Пожаловаться на содержимое документа