close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2133534

код для вставки
Oct. 18, 193s.v
A, CALLSEN
.
2,133,534 I
ENGINE STAREPING APPARATUS
Filed Feb. 2, 1937
-
-3 Sheets-Sheet 1 I- -
Inn”??? .1”!
45¢.” CAM/sew
Oct. 18, 1938.
.
A_ CALLSEN
-
ENGINE summe Arnnuus
Filed Feb. 2, 193'!
r
2,133,534 '
_
. s shee'is-sheet 2
{QM/1,51%“
Patented Oct. 18, ‘71938
2,133,534 ~'
' UNITED STATES
PATENT’ OFFICE .
2,133,534
ENGINE STARTING APPARATUS. I
Albert Callsen, Stuttgart-Botnang, Germany, as
'
signor
to
Robert Bosch
Geselischaft
mit
beschri'inktcr Haftung, Stuttgart, Germany
Application February 2, 1937, Serial No. 123,624
In Germany February 10, 1936
6 Claims.
This invention relates to starting apparatus
for internal combustion engines, more particu—
.larly to a coincidental system in which the op
eration of the starting motor is instituted by
5 the motion of any suitable control member, such
as an accelerator or clutch pedal rather than by
an individual starting control. In prior systems
of, this type there is the possibility that a cold
engine may the a few times and then stop, and
10 that an impatient operator may attempt to re
is a. section similar to the two preceding ?gures
and shows the mode of unlatching the coupling
bolt to place the linkage in an operative condi
tion; Fig. 5 is a side elevation of the actuating
member; Fig.-6 is a cross section taken on line 5
-G—6 of Fig. '7, which shows a modi?cation of the
device‘ in which a magnetic starting switch is
employed.
‘
'
-
Referring now in more detail to Fig. 1,‘ the nu
meral l indicates a starting motor which may be 10
engage the‘ starting pinion before‘ the engine . of the type customarily employed in automobile
?ywheel has'come to rest. Under these condi
tions considerable damage might be sustained by
the starting mechanism. The invention herein
1‘ described is designed to prevent the occurrence
of such damage by providing an interlock link~
age arrangement which will prevent the closure
of the starting motor circuit until the engine has
come to a complete standstill. During the period
50 of engine operation, a coupling element is auto
matically locked in such position as‘ to render
the linkage ineffective and so prevents any im
proper engagement of the starting switch con
tacts. When the engine is3 at a standstill it is
necessary to depress the accelerator or clutch
pedal in order to unlock the coupling element
and restore the linkage to an operative condition.
A subsequent depression of the pedal will then
actuate the linkage and close the starting switch.
One of the objects of this invention is, there
_ fore, to provide engine starting apparatus which
‘is more e?lcient in operation and certain in per
formance.
‘
Another, object is to provide engine starting
and motor vehicles generally.
The armature
shaft 2 of the motor carries a sliding pinion 3
which may be moved by the tiltable yoke 4 into
engagement with the toothed rim of ?ywheel 5. 15
The ?ywheel is attached to an associated inter
nal-combustion engine not shown. A starting
switch 6 is mounted on the motor i in such posi
tion that the movable element thereof is in the
path of movement ‘of an associated part of the 20
tiltable yoke 4. A hearing ‘I on the starter hous
ing supports the yoke 4, the actuating member -8,
and the'push rod 9, by means of the pivot shaft
to. The push rod 9 is connected to a suitable
control, such as the pedal 9' which may be either 25
the clutch or accelerator pedal. As shown in
Fig‘. 2, a latching bolt II is transversely mounted
in the‘yoke 4, and is guided by the slots‘ l2 in
either leg of the yoke. A spring l3 bears against
the top of the bolt II and maintains a downward 30
thrust. One end of. the bolt projects from the» '
arm of the yoke 4, and is pivotally attached to
' a lever l4.
The bolt ll has'a latch abutment
l5 at the other end and is provided with a cen
trally disposed notch it. An ear' ii on the yoke 35‘
35 apparatus which is more simple in construction
4 pivotally supports the lever l4. The lower end
and more economical in manufacture.
of
the lever is connected to a stud l8. which is
A further object is to provide engine starting .
mounted on a diaphragm l9, mounted 'in the cup
apparatus which is less subject to injury through
abuse or misuse. \
40
Still a further object is to provide engine start
ing apparatus which is automatically rendered
inoperative while the associated engine ?ywheel
is revolving.
Other objects and advantages will in part be
‘5 obvious and in part be specifically set forth when
the following speci?cation is read in‘ connection
with the drawings, in which:
t
Fig. 1 Ba side view of the control linkage as
a‘, applied to a starting motor assembly‘; Fig. 2 is
- a fragmentary section ta'kenon line 2-2 of Fig.
1 looking from the left side and showing the cou
‘ , piing bolt in the operative position; Fig. 3 is a
partial section similar to Fig. 2 and shows the
_
20. A conduit 21 connects the cup 20 with any
suitable source of low pressure, such as the in- 40
take manifold of an associated engine. As shown
in detail in Fig. 5, the actuating member 8 has
a sloping upper surface 22. The forward edge
23 of the member 8 is positioned so that it does
not clear the lower edgevof bolt II when the 45
bolt is in the unlatched position shown in Fig. 2.
When the bolt H is latched as shown in Fig. 3,
the forward edge 23 clearsthe bottom of the
slot l6 and the bolt is. engaged by the surface 22
and rear-‘edge 24.
-
.
A combined ‘ magnetic and lever system is
shown in Fig. 7, where the latch bolt H is guided
in slots 30 in a spring biased. slidable- frame 3|,
best seen in Fig. 6. A coil spring 32 bears against
i coupling bolt in its inoperative position; Fig. 4 ‘ the upper surface of the bolt II. The actuating 55'
2
2,183,584
member 33 has the upper surface shaped simi
larly to the member 8 of the preceding ?gures
switch-contacts, but it moves the other end of the
armature into the strong magnetic field of the
and engages the bolt H in the same manner.
solenoid winding 42, assuming that ignition
The actuating member 33 is moved by the piv-'
switch 43 is closed.
oted lever 34. A push rod 35 is connected to the
foot pedal 36, and drives one end of the lever
34 through a spring link 31. An armature 38
the battery 4 I, through the winding 42 and arma
ture winding of generator 45 to ground, estab
lishes a. magnetic ?eld suiiiciently strong to at
of a magnetic switch 39 carries a contact for
tract-the switch armature 38 and close the con
closing the circuit between a‘starting motor 40
tacts of the starting motor circuit. When the
engine starts the manifold suction will draw
10 and the battery 4|, the operating winding being
‘indicated at 42 and the customary car ignition
switch at 43. An abutment 44 is provided on the
The current ?owing from
in.the diaphragm l9 and move the bolt II to its
inoperative coupling position as shown in Fig. 6.
slidable frame 3|, which engages the end of the
The frame 3! will slide back to the position
switch armature 38. Connected in the ignition
shown in Fig. 7, and the current coming from the
generator '45‘ will buck the battery current in the
15 circuit through solenoid winding 42 is a gener
ator 45.
The operation of the invention is as follows:
In Figs. 2, 3 and 4, the depression of an operating
pedal will cause rod 9 (Fig. 1) to move the actu
ating member 8 from the plane of the paper to
wards the observer.' When the associated en
gine is stopped thereis no vacuum in the intake
solenoid winding to produce a null point which
will allow the restoring spring to break the start
ing circuit and move the armature 38 out of the
magnetic ?eld of the solenoid winding. In this
embodiment the actual control of the starting
switch is virtually independent of the foot pedal
assembly‘ 35-36 and the linkage apparatus
31-33. Both of the described embodiments,
manifold and the diaphragm I9 is substantially
flat, as shown in Fig. 2. ‘This condition .draws the however, require two ‘operations of the foot pedal
latch bolt ll to the left, where it forms a barrier in starting, one to place the linkage in operative
in the path of the member 8. In starting the - condition, and the other to/ close the starting
engine, the operating pedal forces the member 8 switch.
toward the observer, carrying with it the bolt II,
It will be obvious that many changes and
and thus tilting the yoke 4 into engagement with modi?cations may be made by anyone skilled in
the startingv switch, as may be seen from Fig. 1. the art, without departing from the scope and
When the engine starts, the suction in the intake spirit of the invention as de?ned in the following
manifold draws the diaphragm I 9 into the posi
claims.
tion shown in Fig. 3, moving the latch bolt II
Having described the invention, what is ~
to the right and the spring l3 latches it. In case claimed is:
'
85 the engine stalls, the linkage remains latched as
1. In a motor vehicle starting system includ
shown in Fig. 3, and in order- to re-start, it is ing a starting switch and a starting pinion,
necessary first to depress the operating pedal and means for jointly closing said switch and mov
move the actuating member 8 forward so that its ing said pinion into starting position, a control
sloping upper surface 22 will engage the ?oor of pedal, 9. coupling linkage between said pedal and
the notch l6 and lift the bolt II from its latched said means, a power element responsive to en 40
position. This may be seen in Fig. 4, where the gine operation. for controlling said linkage
bolt has been unlatched and the restoring force whereby said linkage is maintained inoperative
of the diaphragm I9 is moving it into the posi
during engine operation, means for holding said
tion shown in Fig. 2. Whenever there is a suc
linkage in an inoperative position upon‘ the stop
45 tion in the intake manifold of the engine, during ping of the engine, and releasing means operable
either the running condition or in the stopping _ by one movement of said control pedal to restore
period, the diaphragm 20 will maintain the bolt said linkage‘ to operative condition and by a
_ H'in the-positionshown in‘Fig. 3. Any move
second movement of'said pedal to actuate said
ment of the operating pedal will merely cause switch closing means.
.
member 8 to slide through the notch 16, lifting
2. The combination with a vehicle having an
the latch bolt ll_ meanwhile, but without tilting internal combustioh engine, and a control for
the yoke 4. When the engine has come to a com
said engine, of a power element connected to
plete stop it is necessary, as above mentioned, to said engine, a starting motor, a starting gear
first depress the operating member to unlatch driven by said motor, a battery, a circuit for
the bolt I l and permit its restoration to the condi
connecting said battery and motor, a normally
tion shown in Fig. 2. A subsequent depression of open switch in said circuit, a mechanical link
the operating member then causes the leading age connected to said control for-closing said
edge 23 of the member'3 to engage the side of the switch, a movable coupling element in said link
bolt I I, and so tilt the yoke 4 into contact with the age connected to said power element, means in
starting switch. It will be seen that two sepa
cluding said power element for moving said cou
rate actuations of an operating member, such as a
pling element to render said linkage inoperative
.clutch' or accelerator pedal, are necessary to en
able operation of the starting mechanism. The
?rst actuation to unlatch‘ the bolt H and restore
the linkage to an operative condition .and the
.during'the operation of said engine, means de
pendent upon operation of said control for re‘
second actuation to tilt the yoke 4 into engage?
ment with the starting switch.
In the embodiment shown in Figs. 6 and 7, the
respective action of the bolt H and the actuating
70 member 33 is similar to that just described. In
this instance, however, when the linkage is in the
operative condition and the pedal 26 is depressed
the abutment 44 on the slidable frame 3| engages
the end of the switch armature 33. The travel of
78 the slidable frame 3| is not su?icient to close the
neously engaging said starting gear and closing
storingsaid linkage to operative condition upon
stopping of the engine, and means for simulta
said switch, said control restoring means includ
ing an actuating member connected to said con
trol for restoring said linkage to operative con
dition.
'
.
.3. The combination with a vehicle having an
internal combustion engine, and a control for
said engine, of a power element connected to
70
said engine, a'starting motor, a starting gear
driven by said motor, a battery, a circuit for con TI
.
3.
2,188,584
by said motor, a battery, a circuit for connecting
'necting said battery and motor, a normally open
switch in said circuit, a mechanical linkage con
said battery and motor, a normally open switch
inoperative, said control restoring means includ
notch therein, said control restoring means in
cluding an actuating member connected to said 15
control and cooperating with said notch to un
nected to said control for closing said switch,‘ in said circuit, a mechanical linkage connected:
to said, control for closing said switch, a-mov
a movable coupling element in said linkage con
nected to said power element, means including able coupling element in said linkage connected
to said power element, means including said
said power element for moving said coupling ele
ment to render said linkage inoperative during pOWer element for moving said coupling element
to render said linkage inoperative ‘during the
the operation of said engine, and means depen
dent upon operation of said control for restoring operation of said engine, and means dependent '10
upon operation of said control for restoring said
10 said linkage to operative condition upon stop ‘linkage to operative condition upon stopping oi
Ping of the engine, said movable coupling ele
ment comprising a laterally slidable latch bolt the engine, said movable coupling element coni
which'inlatched position renders said linkage prising a laterally slidable latch bolt having a
15 ing an actuating member connected to said con
trol for unlatching said bolt.
.
latch said bolt.
4. The combination with a vehicle having an
-
,
v6. The combination with a vehicle having an
internal combustion engine, and a control for
said engine, of a power element connected to 20
V20 driven by said motor, a battery, a circuit for con
said engine, a starting motor, a starting gear
necting said battery and motor, a normally open driven by said motor, a battery, a‘ circuit for
connecting‘ said battery and motor, a normally
switch in said circuit, a mechanical linkage con
nected to said control for closing said switch, a open switch in said circuit, a mechanical linkage
connected tov said control for closing said switch, 25
25 movable coupling element.in said linkage con
‘a
movable coupling element in said linkage con
nected to said power element, means including
said power’ element for moving said coupling nected to said power element, means including‘
said power element for moving said coupling
element to render said linkage inoperative dur
element to render said linkage inoperative during the operation of said engine, and means de
pendent upon operation of said control for re- ' ing the operation of said engine, means depend 30.
storing said linkage to operative condition upon ent upon operation of said control for restoring
stopping of the engine, said} movable coupling said linkage to operative condition upon stop
ping of the engine, means for simultaneously
element comprising a laterally slidable bolt hav
ing a latching abutment at one end and a spring engaging said starting gear and closing said
for maintaining said bolt in latched position, said' switch including a pivoted yoke, and a coupling 35
35 control
restoring means including an actuating linkage between said control and said yoke, said
control restoring meansincluding an actuating
member connected to said control for unlatch
internal combustion engine, and a control for
said engine, of a power element connected to
said engine, a starting motor, a starting gear
ing said bolt.
'
I
5. The combination with a vehicle having an
' internal combustion engine, and a control for
40 said engine, of a power element connected to said
engine, a starting motor, a starting gear driven
‘ member included in said linkage, said actuating
member being pivoted on the same axis as said ,
yoke.
,
ALBERT CALLSEN.
40
Документ
Категория
Без категории
Просмотров
0
Размер файла
510 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа