Control cable positioning device

Control cable positioning device
United States Patent [191
[11]
4,261,221
Koba ashi
[45]
AP r. 14, 1981
[54]
CONTROL'CABLE POSITIONING DEVICE
[75] Inventor:
4,175,450
Tetuo Kobayashi, Ikeda, Japan
_
Attorney, A ent, or Firm-Armstron , Nikaido,
lvlmmelstei‘lg1 & Kubovcik
[21] Appl. No.: 26,315
[57]
_
[22]
g
éBSTRACT
A control cable positloning device including a screw
Flled:
Apr- 2’ 1979
member secured to an end of an inner cable which is
Foreign Application Priority Data
Feb, 14, 1979 [JP]
disposed slidably within the control cable and having a
screw surface formed at a part of the peripheral surface
Japan ................................ .. 54-18680
[51]
Int. Cl.3 .............................................. .. F16C 1/10
[52]
US. Cl. .............................. .. 74/501 R; 74/501 P;
[58]
Field of Search ....................... .. 74/501 R, 501 P;
thereof; an outer ?tting having an inner surface capable
of engaging to the peripheral surface of the screw mem
ber, a partially cutaway portion and a projection ex
tending downward and capable of bending; and a heli
403/195; 411/262
cal spring so wound as to clamp the peripheral surface
and having pawls at both ends thereof extending out
285/81, 92; 403/194, 195, 197; 85/32 CS;
ward, each pawl being capable of abutting to the re
spective side surface of the cutaway portion, whereby
151/14 CS
[56]
Bennett ............................ .. 74/501 P
Primary Examiner~Kenneth Dormer
,
[73] Ass1gnee: 1:115:11)? Cable System, Inc., Hyogo,
[30]
11/ 1979
References Cited
U.S, PATENT DOCUMENTS
900,589
10/1908
3,587,341
6/1971
Fiddler
3,645,150
2/1972
Crossland .... ..
3,916,723
11/1975
the length of the inner cable projecting from the con
duit can be controlled since the end of the conduit of the
control cable is controllable when the projection is
Ratcliffe .......................... .. 85/32 CS
. . . . . ..
Hawtree et a1. ......... ..
. . . . . . . ..
bent.
74/501
. 74/501 P
4 Claims, 5 Drawing Figures
74/ 501 R
111
I0 I,
|
~
I
41,261,221“,
2
1 .
CONTROL CABLE POSITIONING DEVICE ‘ ,
'The'drive means including a pedal or a lever is con
nected to other end of the inner cable 3. In general, a
return spring (not shown). which maybe mounted to the
BACKGROUND OF THE INVENTION
'
driven ineans provides an=external force to return the
The present invention relates to a novel positioning
device for a control cable, and more particularly to a
device for positioning controllably an end of a conduit
for a control cable in order to keep constant the length
of an inner cable projecting from the end of the conduit.
The present invention also relates to a positioning de
vice which functions as a member for connecting the
end of the inner cable to various driven means with
controlling the length of the inner cable, when the end
pullin’g'force'of the. inner cable 3 given by the drive
means fror'n'the direction of A to the direction B.
As‘ shown in FIG. 2,~ the outer ‘?tting 10 is secured
onto the peripheral surface 5 of the screw member 4
through an inner surface 9 having a screw thread. The
out'e'r'?ttin'g 10 is formed with a cutaway portion 11
including side surfaces 12 and 13 and a projection 14
capable of bending in the direction of E in the cutaway
portion.
I
'
I
'
'
One device of this type as is known in they art is so
constructed that a positioning nut is screwed to anend
Numeral 15Vis a ?ange abutting to ‘the engagement
plate 7; Numeral 16 is a pair of pawls extending through
the engagement plate 7 and engaged thereto with their
of a conduit or an inner cable and further, in order to
enlarged portions.
of the conduit is ?xed.
-
.
' I
.
_
prevent the looseness of the positioning nut due to
A helical spring 17 is mounted on the peripheral
swing, an additional nut for clamping is provided. The
thus constructed devicehas a fatal disadvantage that
when the additional nut isloosened, the positioning nut
is also loosened, which results in difficulty in precise
operation of a driven means due to changing position of
surface 5 of the screw member 4 at the position relative
to the cutaway portion 11 and has two pawls 18, 19 bent
outwardfThe pawls 18, 19 are so positioned as to abut
to the side surfaces 12, 13. Further, as shown in FIG. 4,
the end of the conduit or the inner cable.
OBJECTS OF THE INVENTION
It is an object of the present invention to provide a
novel positioning device for a control cable in which an
end of an inner cable or a conduit is positioned control
lably and the ?xed position thereof is never changed, by
which precise operation of driven means can be estab
lished.
Other objects of the invention will become apparent
from the following description given with reference to
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partially cutaway front view showing an
the projection 14 can be positioned at a middle point
between the pawls 18, 19 when bent in the direction of
25
- The1v advantages and _ operations of the positioning
device‘ of the present invention will be explained below.
Referring to FIG. 3, when the outer fitting 10 is
forced to rotate in the direction of C relative to the
screw member 4, the side surface 13 of the cutaway
portion 11 pushes the pawl 19 into the direction of C
thus tightening the helical spring 17 which results in
preventing the helical spring 17 and the outer ?tting 10
from rotating in the direction of C. Further, when the
outer ?tting 10 is forced to rotate in the direction of D,
the side surface 12 pushes the pawl 18 into the direction
FIG. 2 is a sectional view taken on line II—II of FIG.
of D thus tightening the helical spring 17 which results
in preventing the helical spring 17 and the outer ?tting
10 from rotating in the direction of D. Thus, the deter
mined length of the inner cable from the outer ?tting 10
FIG. 3 is a sectional view taken on line III—III of
to the end fitting 6 is maintained constant, since the
outer ?tting 10 is not moved in the directions of A and
embodiment of the present invention;
1;
FIG. 1;
B relative to the screw member 4. Therefore, the driven
FIG. 4 is a view showing the operation of the em 45 means can be operated precisely.
Referring to FIGS. 2 and 4, when the projection 14 is
bodiment of FIG. 1 when a projection of an outer fitting
bent to the direction of E and the outer ?tting 10 is
is bent downward; and
rotated in the direction of C or D relative to the screw
FIG. 5 is a partially cutaway front view showing
member 4, the helical spring 17 is so pushed as to be
another embodiment of the invention.
50 loosened thus rotating the helical spring 17 and the
DETAILED DESCRIPTION
outer ?tting 10 freely in the direction of C or D. There
FIGS. 1 to 4 show an embodiment of the invention.
fore, the outer ?tting 10 can be moved in the direction
of A or B shown in FIG. 1, by which the length of the
Referring to FIG. 1, numerals l and 2 designate a con
inner cable 3 from the outer ?tting 10 to the end ?tting
trol cable and a conduit, respectively, while numeral 3
designates an inner cable slidably disposed within the 55 6 can be controlled freely. Therefore, the driven means
can be operated precisely and stably.
conduit 2. A screw member 4 is secured to the end of
In the embodiment shown in FIGS. 1 to 4, in case of
the conduit 2, a part of the peripheral surface 5 thereof
being a screw surface.
pulling operation only, the pawl 16 is free and the flange
One end of the inner cable 3 extends through a bore
15 abuts to the engagement plate 15 since the outer
4a formed in the screw member 4 into a driven means
such as a clutch or an accelerator and is engaged thereto
?tting 10 is never separated from the engagement plate
by an end ?tting 6 made of metal.
The length from an outer ?tting 10 abutted to or
engaged to a ?xed engagement plate 7 to the end ?tting
7 in the direction of A in FIG. 1.
Referring now to the embodiment of FIG. 5, wherein
the numerals are identical with those in the correspond
ing parts shown in FIGS. 1 to 4, a screw member 4 is
6 must be maintained constant in order to ensure precise 65 secured to the end of an inner cable 3 and an outer
operation of the driven means by a drive means (not
shown). The engagement plate 7 is ?xed through a bore
8 to the outer ?tting 10.
fitting 10 is engaged to the engagement plate 7 of a lever
20 as a driven means, and the end of a conduit 2 is ?xed
by means of a cap 21 to a panel 22. The advantages and
4,261,221
3
operations of the embodiment are substantially, the same
as the embodiment shown in FIGS.,1 to 4. '
,
ends thereof extending outward, each pawl being capa
v
In the embodiment shown in FIG. 5, the engagement
plate 7 may be provided with a tapered bore8a, and
further in order not to prevent the engagement plate 7
from rotating in the direction of F or G, an abutting
surface 150 of the ?ange 15 and a engagement surface
160 of the pawls 16 may be curved.
.
u
ble of abutting to' the respective 'side surface of the
cutaway portion, and the projection of the outer ?tting
being positioned between the pawls when bending.
2. The ‘positioning device of claim 1, wherein the
outer fitting is provided at one end thereof with at least
one pair of pawls for engagement with a support.
3. A positioning device for a control cable which
_.
It is to be understood that the invention is not limited
in its application to the details of constructionan'd ar
rangement of parts set forth in the above general de
scription or illustrated in the accompanying drawings
since the invention is capable of other embodiment and
of being practiced or carried out in various ways. Also,
it is to be understood that the phraseology or terminol
comprises a screw member secured to an end of a con
duit having an inner cable which is disposed slidably
within the conduit, at least a part of the peripheral sur
face thereof being a screw surface; an outer ?tting hav
ing an inner surface capable of engaging to the periph
eial surface of the screw member, a partially cutaway
portion, and a projection extending downward and
ogy employed herein is for the purpose of description
and not limitation.
4
surface of the screw member and having pawls at both
capable of bending; and a helical spring so wound as to
-
What is claimed is:
l. A positioning device for a control cable which
clamp the peripheral surface of the screw member and
comprises a screw member secured to an end of an inner 20
each pawl being capable of abutting to the respective
cable which is disposed slidably within the control ca
ble, at least a part of the peripheral surface thereof being
side surface of the cutaway portion, and the projection
of the outer ?tting being positioned between the pawls
a screw surface; an outer ?tting having an inner surface
when bending.
having pawls at both ends thereof extending outward,
capable of engaging to the peripheral surface of the
4. The positioning device of claim 3 wherein the
screw member, a partially cutaway portion, and a pro 25 ‘outer ?tting is provided at one end thereof with at least
jection extending downward and capable of bending;
one pair of pawls for engagement with a support.
and a helical spring so wound as to clamp the peripheral
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65
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