JPS642965Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a push-pull control cable in which the inner cable is slidably inserted into the outer casing to transmit operating force in both push and pull directions. Regarding a terminal device that is attached to a fixed member and connects the end of an inner cable to an operating member, more specifically, the rod that connects the end of the inner cable and the operating member is axially connected to a fixed cylinder fixed to an outer casing. The present invention relates to a terminal device having a structure that generates a swinging motion as well as a reciprocating motion.

Conventionally, a terminal device has a structure in which a rod connecting the end of the inner cable and the operating member swings in an axial direction with respect to a fixed cylinder fixed to the terminal of the outer casing. is fixed by caulking, and a spherical head formed at the rear end of the sleeve is fitted into a spherical recess formed at its tip to support it freely swinging, and a rod with a connecting part at its tip is inserted into the fixed cylinder. The fixed tube is connected to the end of the inner cable passed through the sleeve and slidably inserted into the sleeve, and the fixed tube is fixed to a fixed member such as a frame by a mounting groove formed on the outer periphery, and the lever, which is the operating member, is fixed to the fixed member such as a frame. It has a structure in which the tip is connected to the connecting part at the tip of the rod, and when the lever swings due to the push and pull motion of the inner cable, or when the push and pull motion is transmitted to the inner cable due to the swing of the lever, the sleeve is The rod swings at a small angle around the spherical head, and the rod slides in the axial direction within the sleeve, but the distance between the tip of the lever connected to the rod and the fixed member is If it is short, the distance from the center of sleeve swing to the connection point with the lever will be small, which will increase the swing angle of the sleeve and reduce the bending moment acting on the inner cable and the sliding between the rod and inner cable. The dynamic resistance becomes large,
There is a drawback that durability and operating force transmission efficiency are reduced.

Therefore, in order to eliminate such drawbacks, the spherical head of the sleeve is fitted into a spherical recess formed in the center hole behind the mounting groove of the fixed tube, and is supported with free swinging. , a terminal device was proposed in which the distance from the center of swing of the sleeve to the connection point with the lever was increased to reduce the swing angle of the sleeve.
In the case of such a device, by caulking the fixed tube to the outer casing at the outer periphery of its rear end, the length of the caulked part for fixing the tube to the outer casing is increased by the amount that the center of swing of the sleeve is shifted backward. If there is an obstacle behind the fixed tube attached to a fixed member such as a frame and it is necessary to route the control cable by bending it at an approximately right angle, the rear end of the fixed tube and the obstacle should be Because the distance between the inner cable and the outer casing is small, the control cable must be bent with a large curvature, and the sliding resistance of the inner cable with the outer casing becomes large at that part, which not only causes a large loss of operating force but also reduces durability. It had the disadvantage of decreasing performance.

The object of the present invention is to provide a terminal device for a push-pull control cable that eliminates such drawbacks and makes it possible to reduce the length from the center of swing of the sleeve of the fixed tube to the rear end. That is.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a flexible outer casing, in which a large number of steel wires 3 are tightly wound around a synthetic resin liner 2 to form a spirally wound strand 5, and a synthetic resin jacket is further wrapped around the strand 5. 6
An inner cable 7 made of stranded wire is slidably inserted into the liner 2 to form a control cable 8 that transmits operating forces in both push and pull directions.

From the tip of the outer casing 1 of the control cable 8, the enlarged diameter portion 12 on the tip side is compressed in the axial direction to form two flanges 23, 23 with an interval between them, and gradually move from the center toward the rear. A metal fixed cylinder 11 having a reduced diameter part 15 formed at the rear end that is reduced in diameter and tightly fitted to the outer periphery of the control cable 8 is fitted and fixed at a position slightly moved toward the other end, and the outer casing is As shown in FIG. 2, the jacket 6 at the end of the liner 1 is cut off by a certain length from the end, and each of the exposed steel wires 3 of the strand 5 is expanded in the radial direction and placed between the jacket 6 and the outer periphery of the liner 2. A holding cylinder 10 made of a metal cylinder whose rear end is tightened to form a tapered part 19 is fitted into a spherical head 17 formed at the rear end of the sleeve 16 having a gap and a center hole 18. The part corresponding to the base of the spherical head 17 on the side circumference of the lever is narrowed inward by roll caulking to form an inward facing collar 14.
The engagement between the collar 14 and the tapered portion 19 makes it impossible for the spherical head 17 to escape, and the sleeve 16
The retaining tube 10 is supported freely swinging around the spherical head 17 of the outer casing 1, and the holding tube 10 is fitted into the above-mentioned gap provided between the outer periphery of the liner 2 at the tip of the outer casing 1 and each steel wire 3. , the liner 2
is inserted into the center hole 18 of the sleeve 16, and the fixed tube 11, which has been previously fitted into the outer casing 1, is moved toward the terminal side and the rear end of the enlarged diameter portion 12 is held as shown in FIG. Each steel wire 3 is fitted onto the outside of the cylinder 10 and the outer periphery 12a is caulked to hold each steel wire 3 in the holding cylinder 1.
By sandwiching the holding cylinder 10 and the fixed cylinder 11 between the outer casing 1 and the fixed cylinder 11, the holding cylinder 10 and the fixed cylinder 11 are fixed to the end of the outer casing 1.
The outer periphery 15a of the sleeve 16 is caulked to seal the gap with the outer periphery of the outer casing 1, and the rod 20 is slidably fitted into the center hole 18 of the sleeve 16, and the outer casing 1 is inserted into the blind hole 21 formed at the rear end. The terminal of the inner cable 7 protruding from the terminal is inserted and fixed by caulking, and the bellows-shaped dust boot 27 is covered between the distal end of the fixture 11 and the distal end protruding from the sleeve 16 of the rod 20. The terminal device is connected to the two flanges 23, 2 on the outer periphery of the tip of the fixed tube 11.
3 is fitted into a fitting hole 26 of a bracket 25 protruding from a frame (not shown), and the connecting portion 2 provided at the tip of the rod 20 is fixed.
2 is connected to the tip of a lever, which is an actuating member (not shown), so that the lever swings around point P by the pushing and pulling motion of the inner cable 7.
Alternatively, when the push-pull motion is transmitted to the inner cable 7 by the swinging of the lever, the sleeve 16 swings around the spherical head 17, and the rod 20 slides inside the sleeve 16. However, in this embodiment, since the spherical head 17 of the sleeve 16 is supported behind the mounting groove 24, the sleeve 1 is
The distance from the center of swing of the sleeve 16 to the connection point with the lever is longer than that of the conventional device supporting the rod 6, and the swing angle of the sleeve 16 is small when the swing width of the tip of the rod 20 is constant. As a result, the bending angle of the inner cable 7 becomes smaller, and the liner 2 fitted from the rear end of the center hole 18 of the sleeve 16 bends over the spherical head 1 as the sleeve 16 swings.
By gently curving at the center position of the inner cable 7, it is possible to prevent the inner cable 7 from hitting the corner of the end of the liner 2 or the edge of the center hole 18 of the sleeve 16 and causing abnormal noise as in conventional devices. , operation feeling, operation force transmission efficiency, and inner cable 7
This has the advantage of improving durability against bending fatigue.

As specifically explained in the above embodiment,
The terminal device of the push-pull control cable of the present invention is formed by forming a strand in which a large number of metal wires are closely wound spirally around a liner made of synthetic resin, and the outer strand is covered with a jacket made of synthetic resin. In a push-pull control cable in which an inner cable is slidably inserted into a casing to transmit operating force in both push and pull directions, the jacket at the terminal portion of the outer casing is cut off, and the strand is radially moved. A metal holding cylinder with a reduced diameter at both ends is fitted inside the expanded strand, and a metal fixing cylinder for attaching to a fixing member is fitted on the outside of the strand. The fixing cylinder and the holding cylinder are fixed to the outer casing by caulking the outer parts, and the spherical head is inserted into the holding cylinder and the sleeve is supported to swing freely, and the sleeve is connected to the actuating member. The main feature is that a rod is slidably fitted into the inner cable, and the end of the inner cable is connected to the rod, and the jacket at the end of the outer casing is cut off and the exposed strands are expanded in the radial direction. The fixing device and the holding tube are assembled by fitting a holding tube for supporting the spherical head of the sleeve on the inside thereof, and fitting a fixing tube for attaching to the fixing member on the outside and caulking the outer periphery of the fixing tube. Since it is fixed to the outer casing, unlike conventional equipment,
There is no need to provide a caulking part behind the position where the spherical head of the fixed tube is supported, and the length from the center of swing of the sleeve of the fixed tube to the rear end can be shortened. When there is an obstacle behind the tube and it is necessary to bend the control cable at a nearly right angle, the control cable can be bent at a smaller curvature compared to conventional devices, and the inner cable can be bent at a smaller curvature than the outer casing. This has the effect of reducing sliding resistance and improving the durability and operability of parts.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the main parts. 1: Outer casing, 2: Liner, 5: Strand, 6: Jacket, 7: Inner cable,
8: Push-pull control cable, 10:
Holding tube, 11: Fixed tube, 16: Sleeve, 17:
Spherical head, 20: Rod, 25: Fixed member.

Claims (1)

[Scope of utility model registration request] A large number of metal wires are tightly wound together to form a spirally wound strand around a synthetic resin liner.
In a push-pull control cable in which an inner cable is slidably inserted into an outer casing whose periphery is covered with a synthetic resin jacket to transmit operating force in both push and pull directions, the terminal portion of the outer casing is The jacket is cut out, the strand is expanded in the radial direction, a metal holding cylinder with a reduced diameter at both ends is fitted inside the jacket, and a metal fixing cylinder is attached to the outside of the strand to be attached to a fixing member. The fixed cylinder and the holding cylinder are fixed to the outer casing by fitting and caulking the portion of the fixed cylinder that corresponds to the outside of the holding cylinder, and the spherical head is fitted into the holding cylinder to freely swing. 1. A terminal device for a push-pull control cable, characterized in that a rod for connecting to an operating member is slidably fitted into a sleeve supported by the sleeve, and an end of the inner cable is connected to the rod.