JPH0141935Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The invention connects various doors and control levers of, for example, an automobile air conditioner to transmit the operation of the control lever to the various doors. The present invention relates to an improvement in a connection part of a control cable for controlling on-vehicle equipment, which connects an operating member and an operated member, such as a cable, to transmit motion or operating force.

(Prior art) Generally, this type of cable for controlling on-board equipment in an automobile is constructed by slidably inserting an inner wire made of a single wire or a stranded wire made of steel wire etc. into an outer cable made of synthetic resin. This provides appropriate overall flexibility. The outer cable is routed along an arbitrary route throughout the automobile, and the movement guide path of the inner wire is determined by fixing both ends of the outer cable to an arbitrary board. , both ends of the inner wire are connected to the objects to be transmitted (the operating member and the operated member), respectively.

For example, the control cable C for controlling on-vehicle equipment is connected to each of a mode lever 2, an inside/outside air switching lever 3, and a template lever 4 provided in the operating section 1 of an air conditioner for an automobile, as shown in FIG. They are connected by locking one end of the inner wire of the cable C, and predetermined operations are performed by sliding these levers in the lateral direction.

Here, the door operating mechanism 6 in the mode lever 2 is shown as shown in FIG. The driving link 7 is connected to the intermediate link 8.
It is connected to a door rotation link 9 of a floor door (not shown) via. Further, an outer cable C that loosely covers the inner cable C1 is provided.
The end portion of 2 is fixed to a substrate (not shown) via a clip 14 as a fixing member. Control cable C for controlling on-vehicle equipment shown in the diagram
In this case, in transmitting the operating force of the mode lever 2 to the drive link 7, in the section from the fixed end of the outer cable C2 fixed by the clip 14 to the connection point with the drive link 7, that is, the pin 13, The inner wire C1 is stretched in a bare wire state.

When the mode lever 2 is slid, the door rotation link 9 rotates via the drive link 7, pin 10, groove cam 11, intermediate link 8, and pin 12, thereby operating the door. It's summery.

(Problem to be solved by the invention) However, the connection part 1 between the conventional control cable C for controlling on-vehicle equipment and the operating member such as the mode lever 2 or the operated member such as the drive link 7
0, as shown in FIG. 3A, the tip of the inner wire C1 passing through the outer cable C2 is fixed to the connecting fitting 11 by integral molding or the like;
Alternatively, as shown in FIG. 3B, a winding portion 12 is provided at the tip of the inner wire C1. Therefore, in order to form the connecting portion 10 at the end of the inner wire C1, an operation such as integral molding or bending must be performed, which has the drawback of requiring a troublesome operation.

There is no problem if the axis of the inner wire C1 in the section from the fixed end of the outer cable C2 to the connection point (pin 13) is located on the same plane as the plane in which the pin 13 operates, but in this section If there is a step, the operating force does not act only on the axis, but the horizontal vector component of the operating force acts as stress on the wire C1 in the section, which may cause buckling of the wire C1. In particular, this buckling occurs significantly in the case of the inner wire C1 made of a single wire.

Moreover, even if a force N in the torsional direction as shown in the figure acts on the control cable C, the connecting portion 10 cannot absorb or eliminate this force, and unnecessary force is applied to the inner wire C1, pin 13, etc. There is a possibility that this force N may cause buckling in the inner wire C1 made of a single wire,
Although the wire 1 made of stranded wire has a higher buckling strength than that of a single wire, there is a drawback that the strength decreases due to untwisting.

Therefore, clip 1 of control cable C
4 (see FIG. 2), there was a problem in that the free selection of the fixing position was restricted.

Further, Japanese Utility Model Application Publication No. 57-28913 discloses a coupling device for absorbing the force N in the torsional direction acting on the inner wire C1, and this coupling device has a hub attached to the end of the inner wire. a rod which is fixed via a rod and has a spherical head formed at its tip; a substantially hemispherical recess formed at the tip of a rotating shaft that rotates around the axis and into which the spherical head abuts; and a connecting member that prevents the spherical head from falling off when it comes into contact with the recess. As a result, the rod can freely swing and rotate relative to the rotation axis, so that even if the force N acts on the wire, it can be absorbed.

However, the connection device disclosed in this publication requires a member such as a hub near the connection point between the inner wire and the operated member, so a large number of parts are placed in a limited installation space such as in a car with sufficient space for each other. If the technology disclosed in the publication is applied to equipment installed in a crowded place, such as a control cable used in an automobile air conditioner, there is a risk that the hub will interfere with other equipment, etc. This is undesirable because it imposes restrictions on the installation location of cables, etc. Additionally, it has a complicated structure and a large number of parts, making it difficult to assemble.

For the control cable C used in such a narrow vehicle, there is a design constraint that requires as few attachments as possible near the connection point, so as shown in Figure 2, the outer cable C2 is In the section from the fixed end to the connection point with the drive link 7, that is, the pin 13, the control cable C in which the inner wire is stretched as a bare wire is optimal.

Furthermore, it is also desired to obtain a cost-effective control cable C by using the inner wire C1 made of a single wire, which is cheaper than a stranded wire.

The present invention was developed in view of the above-mentioned points, and is a control cable that has an inner wire made of a single-core steel wire and is stretched as a bare wire in the above-mentioned sections. To provide a control cable for controlling on-vehicle equipment that can reliably transmit the operating force of the cable, easily overcome design constraints, and facilitate the manufacturing work of a connecting part with an operating member or an operated member and the connecting work thereof. With the goal.

[Structure of the idea]

(Means for Solving the Problem) The present invention to achieve the above object consists of an inner wire made of a single-core steel wire and an outer cable made of a hard synthetic resin that loosely covers the inner wire. The outer cable is fixed to a fixing member to determine the movement guide path of the inner wire, and one end of the inner wire is connected to an operating member, and the other end is connected to an operated member via a connecting part. In an automobile, an inner wire is stretched as a bare wire in a section from a fixed end of the outer cable to a connection point of the operated member when the outer cable is connected and transmits the operating force of the operating member to the operated member. In the control cable for controlling on-board equipment, the connecting portion has a spherical portion formed at the other end of the inner wire, a recess into which the spherical portion fits, and a wire of the inner wire constituting the control cable. a curler having an entrance slot that is sufficiently wider than the diameter and allows the inner wire to extend outward from the recess; and a curler that covers the curler to prevent the spherical part fitted in the recess from falling off; This is a control cable for controlling on-vehicle equipment, which is comprised of a cover member that is open in the direction in which the wire extends.

(Function) Since the connecting portion is configured in this way, the curler and the inner wire can freely rotate relative to each other.
Furthermore, the inner wire can swing freely relative to the curler. As a result, the torsional force acting on the inner wire is absorbed or eliminated.

(Example) An example of the present invention will be described below with reference to the drawings.

FIG. 4 is an exploded perspective view showing an example of the connection part of the control cable for controlling on-vehicle equipment according to the present invention, and the same members as those shown in FIGS. are partially omitted.

This control cable C for controlling on-board equipment in an automobile has an inner wire C1 made of a single core steel wire.
and an outer cable C2 made of a hard synthetic resin that loosely covers the inner wire C1, giving appropriate flexibility to the whole. The outer cable C2 is wired along an arbitrary route to various parts of the automobile, and both ends of the outer cable C2 are fixed to a board (not shown) via clips 14 as fixing members. By doing so, the movement guide path of the inner wire C1 is determined. One end of the inner wire C1 is connected to a mode lever 2 or the like as an operating member, and the other end is connected to a drive link 7 or the like as an operated member via a connecting portion 20.

In the case of the control cable C used in an automobile where the installation space for each device is narrow, there is a design constraint to provide as few attachments as possible near the connection point with the drive link 7, etc., so in particular,
In the section from the fixed end of the outer cable C2 fixed by the clip 14 to the connecting point with the drive link 7, that is, the pin 13, the inner wire C1 is stretched as a bare wire.

The connecting portion 20 of the control cable C for controlling onboard equipment in an automobile includes a spherical portion 21 formed at the tip of the inner wire C1, and a curler 25 made of resin or metal and having a recess 22 into which the spherical portion 21 fits. , the curler 25 is arranged so as to prevent the spherical part 21 fitted into the recessed part 22 from falling off.
The cover member 26 covers the body from the outside.

To explain this configuration in more detail, the spherical portion 21
is spot welded to the tip of the inner wire C1. Further, the curler 25 includes:
A through hole 23 is formed into which a pin 13 protruding from the drive link 7 fits, and this through hole 23 and the recess 22 are connected by a slot 24. The entrance end 24a of the slot 24 (hereinafter also referred to as the entrance slot) has a width sufficiently wider than the wire diameter of the inner wire C1, and is designed to allow the inner wire C1 to extend outward from the recess. It's getting old. Then, the cover member 2
6 is open in the stretching direction of the inner wire C1.

This cover member 26 is provided to restrict the expansion of this curler 25 from the outside after the spherical part 21 of the inner wire C1 is fitted into the recessed part 22 of the curler 25, It has a developed shape as shown in FIG. 5, and can be molded by bending it along broken lines and then spot-welding 27 the rear part. In addition, 28 in the figure is a piece for preventing the curler 25 from coming off.

In order to assemble the connecting portion 20 of the control cable C for controlling on-vehicle equipment configured as described above, first, the spherical portion 2 is inserted into the recess 22 of the curler 25.
1, and the cover member 26 restricts the spherical part 21 from coming off from the outside, and the retaining piece 28 is bent as shown by the broken line in FIG.
Then, by inserting and fixing the pin 13 into the through hole 23 of the connecting portion 20, the connection work of the control cable C is completed.

Next, the operation of this embodiment will be explained.

Since the spherical part 21 of the inner wire C1 is fitted into the recess 22 of the curler 25 in this way, the curler 25 and the inner wire C1 can freely rotate relative to each other. Since the width is wider than the diameter, the wire C1 can freely swing relative to the curler 25, and the inner wire C1 can be rotated within a predetermined range as shown in FIG. In this way, since the relative rotation is free, the inner wire C1 is not twisted, and is also swingable, so that the pin 13 can be moved from the fixed end of the outer cable C2.
Even if the axis of the inner wire C1 in the section up to does not coincide with the plane in which the pin 13 operates, there is no risk of buckling of the wire C1 in the section. That is, even if the aforementioned torsional force N acts on the inner wire C1, this can be easily absorbed or eliminated.

Therefore, clip the control cable C 1.
4, the fixing position can be freely selected, and even if the force N in the torsional direction is applied, the connecting part 20 will absorb this.
Unnecessary force also applies to the inner wire C1
I can't tell even 4.

In this way, in the control cable C for controlling on-vehicle equipment of this embodiment, the force N is absorbed by the connecting portion 20, and the operating force of the mode lever 2 is transmitted through the control cable C to ensure the drive link 7. can be operated.

Furthermore, the operating force of the mode lever 2 is transferred to the drive link 7.
Since there is no need to provide an accessory member near the connection point, design constraints can be easily overcome, and a control cable C that is most suitable for use in a small automobile can be obtained. Further, since the number of parts constituting the connecting portion 20 is small, the manufacturing workability and connection workability of the connecting portion 20 are significantly improved.

Moreover, as mentioned above, buckling does not occur, so
Since the inner wire C1 made of a single wire whose buckling strength is weaker than that of a stranded wire can be used, it is also possible to obtain a cost-effective control cable C using this inexpensive single wire.

In the above embodiment, the entrance end 24a of the slot 24 is relatively narrow, but if the corner is cut off and expanded as shown in FIG. 7, the rotation range α of the inner wire C1 can be increased. It is much larger than the above-mentioned cable, and the freedom to select the fixing position of this cable is expanded accordingly, and the ability to absorb torsional force is increased.

In the above-mentioned embodiment, the case where the present invention is used as a controller for an air conditioner for an automobile has been described, but the present invention is not limited to this case, and can also be used for, for example, a choke lever or the like.

[Effect of idea]

As is clear from the above description, according to the present invention, the connecting part has a spherical part formed at the other end of the inner wire and a recess into which the spherical part fits, and the connecting part has a spherical part formed at the other end of the inner wire and a recess into which the spherical part fits. a curler having an entrance slot that is sufficiently wider than the diameter of the wire and allows the inner wire to extend outward from the recess; and a curler that covers the curler so as to prevent the spherical part fitted into the recess from falling off; , and a cover member that is open in the direction in which the inner wire extends, so that the force in the torsional direction that acts on the inner wire is
Since it is absorbed or eliminated at the connection part, the operating force of the operating member is transmitted through this control cable for controlling on-vehicle equipment and can reliably operate the operated member, as well as fixing the control cable for controlling on-board equipment on an automobile. Freedom of position selection is expanded, and assembly work becomes easier.

In addition, in this control cable for controlling on-board equipment in an automobile, the inner wire is stretched as a bare wire in the section from the fixed end of the outer cable to the connection point of the operated member, and there is an attached member near the connection point. This makes it ideal for use in small cars.

Moreover, since an inner wire made of a single wire can be used, the control cable becomes cost-effective.

[Brief explanation of the drawing]

Fig. 1 is a front view of the operating section of an automotive air conditioner, Fig. 2 is a schematic plan view of the main parts of the door operating mechanism, Figs. 3 A and B are perspective views showing the connection part of a conventional control cable, FIG. 4 is an exploded perspective view of essential parts showing an embodiment of the present invention, FIG. 5 is an exploded view of a cover member, FIG. FIG. 7 is a plan view of main parts showing another embodiment of the present invention. 2...Mode lever (operating member), 7...Drive link (operated member), 13...Pin (connection point),
14...Clip (fixing member), 20...Connection part,
21... Spherical part, 22... Recessed part, 23... Through hole,
24... Slot, 24a... Entrance end (entrance slot), 25... Curler, 26... Cover member, C1... Inner wire, C2... Outer cable, C... Control cable for controlling equipment mounted on the vehicle.

Claims (1)

[Claims for Utility Model Registration] A member comprising an inner wire C1 made of a single-core steel wire and an outer cable C2 made of a hard synthetic resin that loosely covers the inner wire C1, and fixing the outer cable C2. 14 to define the movement guide path of the inner wire C1, and also connects one end of the inner wire C1 to the operating member 2 and the other end to the operated member 7 via the connecting portion 20. , in transmitting the operating force of the operating member 2 to the operated member 7, from the fixed end of the outer cable C2 to the operated member 7.
The section up to the connection point 13 is the connection point 2 in the control cable C for controlling on-vehicle equipment in which the inner wire C1 is stretched as a bare wire.
0 has a spherical portion 21 formed at the other end of the inner wire C1, a recess 22 into which the spherical portion 21 fits, and is sufficiently wider than the wire diameter of the inner wire C1 constituting the control cable C. a curler 25 having an entrance slot 24a for extending the inner wire C1 outward from the recess 22; , a cover member 26 that is open in the direction in which the inner wire C1 extends, and a control cable for controlling on-vehicle equipment.