JPH0134967Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention is a push-pull type control cable installed for remote control in automobiles, agricultural machinery, bicycles, etc., which is detachably connected to the terminal of the outer casing. This invention relates to improvements to casing caps.

(Technical background and problems of the invention) Control cables are made by coating a metal spiral tube with synthetic resin, or by inserting a flexible inner cable into the inner hole of a flexible outer casing made of a single synthetic resin tube. is slidably inserted through the outer casing, and the outer casing is locked to the locking part of the related equipment by the casing cap connected to its terminal, and the terminal of the inner cable is connected to the operating part of the operating equipment and the driven part of the operated equipment. The device is connected to the control unit and transmits the movement of the operating unit to the vertical movement unit to remotely control the operated device.

Normally, in order to connect the casing cap to the outer casing, the casing cap is inserted into the end of the outer casing and is fastened using a press or the like so that it will not come off. For this reason, a wide variety of remote control devices are manufactured with control cables set to a length that matches the device. This often resulted in confusion about wiring, etc., due to making different ones or assembling them into equipment.

In particular, when it is necessary to replace control cables for repair purposes, it is not possible to store and manage all the different types on site, so it takes a considerable amount of time to arrange and obtain cables of a fixed size, resulting in a lot of time loss. Therefore, cables of various lengths are consolidated into several lengths, cables with fixed dimensions are manufactured in several stages, and the casing cap is removably connected to the outer casing. teeth,
After disconnecting the casing caps, the outer casing is cut to match the equipment, and the casing caps are reconnected, thereby making it possible to adapt a small variety of cables to a wide variety of equipment.

(Conventional example) The connection of a conventional removable casing cap to an outer casing is, for example,
As shown in No. 39128 (shown in Figure 4), the casing cap b has screws d carved on the outer periphery of the connection part c with the outer casing a, a plurality of vertical slits e, and a nut f in the connection part c. A method is known in which the outer casing inserted into the connecting portion is tightly held by screwing the outer casing and pressing the non-slit portion inward to connect the outer casing.

However, the casing caps connected as described above, when operating the control cable,
When the inner cable is pulled and operated, a forward force is applied to the terminal of the outer casing, and a pushing force is applied to the connection part of the casing cap, so there is no problem, but when the inner cable is pushed and operated, a backward force is applied to the outer casing. Since a tensile force is applied to the connecting portion between the two, the synthetic resin coating layer of the outer casing is stretched and the casing cap is detached, resulting in damage to the cable.

(Purpose of the invention) The outer casing of the control cable for push/pull operation uses a known product shielded with multiple hard steel wires for reinforcement to ensure elasticity resistance, and the terminal part of the outer casing of the control cable for push/pull operation is The hard steel wire for shielding is folded back and bent to form a bent part, and the bent part is inserted into the inner hole of the casing cap while being held between the receiver and the holding ring, and the casing cap and the receiver are screwed together. However, the two are removably connected so as to prevent the casing cap from coming off due to the force of the bent portion.

(Embodiment of the invention) To explain the invention with reference to drawings, as shown in Fig. 3, the outer casing 2 of the control cable for push/pull operation is designed to withstand compressive force and tensile force applied thereto and not expand or contract. For this purpose, a plurality of hard steel wires 22 are attached to the outer periphery of a flexible inner tube 21 made of a metal spiral tube or a synthetic resin tube for reinforcement, either in close contact with each other or in parallel with gaps between them. A reinforcing shield 23 is wrapped in a spiral pattern, and a flexible synthetic resin coat 2 is applied around the outer periphery.
4 has been applied.

After this outer casing 2 is cut to a required length, a portion of the coat 24 is cut off at the end portion as shown in FIGS. 1 and 2, and each hard steel wire 22 of the shield 23 is
is folded back and bent to form a bent part 25,
The exposed portion of the inner tube 21 has been cut away.

A cylindrical receiver 31 is provided in the outer casing 2.
The outer circumferential surface of the receiver 31 is provided with a tapered surface 32 tapered at the tip of the bent portion 25.
A cylindrical presser ring 41 with a rounded inner hole and an inner taper 42 is placed on the outside of the bent part 25, and the inner taper 42 is inserted into the bent part 25. 25, and the bent part 2
5 is sandwiched between the tapered surface 32 and the inner taper 42, and the whole is inserted into the inner hole of the casing cap 4, and the screw 33 on the outer periphery of the receiver 31 is screwed into the inner thread 52 of the casing cap 4. When screwed in, the bent portion 25 of the outer casing 2 is strongly clamped by the tapered surface 32 of the receiver 31 and the inner taper 42 of the retaining ring 41, and the outer casing 2 and casing cap 4 are strongly connected, and the bent portion 25 of the outer casing 2 is strongly pressed in the pushing direction. It is also designed to prevent it from slipping out in the pulling direction.

Therefore, even if a pushing force or a tensile force is applied between the two, the bent portion 25 of the outer casing 2 is connected to the tapered surface 32 of the receiver 31 and the inner taper 42 of the retainer ring 41.
Since the outer casing 2 is firmly clamped with the casing cap 4, it will not come off.

To remove both, casing cap 4 and receiver 3
1 is unscrewed, the retainer ring 41 and the receiver 31 are easily separated, and the bent portion 25 of the outer casing 2 is released.

(Modification of the invention) The casing cap 4 described above is connected to lock the outer casing 2 to related equipment, but as shown in FIG. 5, two separate outer casings 2a and 2b are connected. When it is necessary to connect them to form one long outer casing 2,
Instead of casing cap 4, as shown in Figure 5,
It is a cylindrical body with internal threads 52 carved on both ends of the inner hole,
The central part is a thick part 54 with a side wall 53, and a connecting cylinder 4' with an inner through hole 55 extending vertically through the central part is used, and the outer casings 2a and 2b are connected from both sides.
All you have to do is connect them.

(Effect of the invention) In the present invention, the outer casing of the control cable used for push-pull operation is shielded with multiple hard steel wires for reinforcement, and the outer casing has a certain dimension longer than the required length. The control cable is cut into pieces and assembled as a control cable, and before being routed to the operating equipment, it is cut to the required size at that location, the shield is exposed, and each grooved steel wire is folded back. This structure allows the outer casing to be assembled with a fixed size outer casing. With a long control cable, it is possible to route it to any of a wide variety of operating devices that are shorter than the length of the control cable.
There is no need to prepare control cables of different lengths for each operating device;
Management becomes easier.

Furthermore, the outer casing and the casing cap do not need to be connected using a large device, and the attachment and detachment of both becomes easy.

Furthermore, the detachment phenomenon that occurs due to the tensile force applied between the outer casing and the casing cap can be avoided because the bent portions of the hard steel wires of the shield of the outer casing are held and supported by the support ring. , it becomes extremely difficult to separate, and damage to the control cable is prevented.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention;
3 is a partially cutaway perspective view of the outer casing, FIG. 4 is a partially cutaway perspective view of the vertical embodiment, and FIG. 5 is a perspective view of another embodiment of the present invention. FIG. 2 is a partially cutaway, exploded perspective view of the embodiment. 2...Outer casing, 4...Casing cap, 21...Inner pipe, 22...Hard steel wire, 23
...Shield, 24...Court, 31...Ukegu,
32... Tapered surface, 33... Screw, 41... Presser ring, 42... Internal taper, 52... Internal thread.

Claims (1)

[Scope of utility model registration request] In the control cable for remote control in which the inner cable is slidably inserted into the inner hole of the flexible outer casing, the outer casing 2
The casing cap 4 fixed to the end of the outer casing 2 has a bent portion 25 where the hard steel wire 22 of each shield 23 is exposed by cutting off the coat 24 and the inner tube 21 at the end of the outer casing 2.
Then, the tapered surface 32 of the receiver 31 is brought into contact with the lower side of the bent portion 25, and the inner taper 4 is formed on the outer surface of the bent portion 25.
A presser ring 41 is inserted so as to make contact with 2,
Fit the casing cap 4 over the whole and attach it to the receiver 31.
The casing cap 4 of the outer casing 2 is screwed into the outer casing 2.