JPH0242891Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is characterized in that a dust boot is attached to a cylindrical fixture fixed to the end of an outer casing so as to cover the inner cable, and the dust boot protrudes from the cylindrical fixture of the inner cable. Attach a marker piece to the part you marked,
This invention relates to a control cable terminal device that allows the position of a mark piece with respect to a dust boot to be confirmed.

Problems to be solved by conventional techniques and ideas For example, when assembling a control cable used as a throttle cable that transmits operating force in the pull direction from an automatic transmission of an automobile to a carburetor to change the opening degree of its valve. After attaching one end of the control cable to the automatic transmission, connect the end of the inner cable to the valve opening/closing lever at the terminal on the carburetor side.
A cylindrical fixture fixed to the end of the outer casing is fitted into the mounting groove of the frame and moved along with the outer casing in the axial direction, forming an elongated tube made of rubber or synthetic resin attached to the tip of the cylindrical fixture. Align the tip of a dust boot of a specified length with the marker piece fixed to a specified position on the inner cable, and then tighten the nuts fitted into the cylindrical fixture from both sides of the mounting groove to attach the outer casing to the frame. This determines the axial position of the outer casing relative to the inner cable, and adjusts the carburetor valve to an accurate predetermined opening for certain operations of the automatic transmission. Conventionally, the dust boot was made of an opaque rubber material, so when positioning the outer casing with respect to the inner cable, the marking piece was hidden inside the dust boot and could not be seen, making it difficult to perform adjustment work. There was a drawback.

Means for Solving the Problems As a means for solving the above problems, in the present invention, the dust boot is formed of a transparent material through which the marking piece can be seen.

Functions and Effects Since the present invention has the above-described configuration, adjustment work can be carried out while visually checking the mark piece inside the dust boot, which has the effect of improving work efficiency.

Note that it is preferable to add carbon or the like to the material such as rubber that is the raw material for the dust boots in order to prevent aging, but adding carbon reduces transparency and makes it difficult to visually see the internal marking pieces. In this case, if the dust boot is made thinner, it will be easier to visually see the mark piece, but if the dust boot is made thinner, it will not only lack strength and reduce durability, but also make it difficult to use the dust boot itself as a reference for positioning. , the rigidity decreases, making it difficult to use as a reference for positioning.

Therefore, the present invention makes it possible to easily see the mark piece through the thin part even when the transparency of the dust boot is relatively low by partially forming a thin part on the dust boot. By applying fluorescent paint to make it easier to see even in a dimly lit engine room, this objective can be achieved more effectively.

Examples The present invention will be applied to a terminal device on the carburetor side of a control cable used as a throttle cable for transmitting the operating force in the pulling direction from an automatic transmission of an automobile to the carburetor to change the opening degree of its valve. An applied example will be described based on the accompanying drawings.

In FIG. 1 showing the first embodiment of the present invention, 1
is a control cable in which an inner cable 3 made of stranded wires and having an outer diameter smaller than the inner diameter of the outer casing 2 is slidably inserted into a flexible outer casing 2, and its terminal (not shown) is shown in the figure. At the terminal on the carburetor side (not shown),
The rear end of a cylindrical fixture 4 with a male thread 5 formed on the outer periphery is fixed to the end of the outer casing 2 by caulking, and this cylindrical fixture 4 is fitted into the mounting groove 8 of the frame 7 and attached to the male thread 5. It is fixed to the frame 7 by tightening a pair of screwed nuts 9, 9 from both sides of the mounting groove 8, and the protruding end of the inner cable 3 protrudes from the tip of the cylindrical fixture 4. A hook 19 is fixed to the holder 19 so as to be connected to a lever for adjusting the valve opening of a carburetor (not shown). A marker piece 17 coated with luminous paint or fluorescent paint on the outer circumferential surface is fixed by caulking, and the tip of the cylindrical fixture 4 is made of translucent silicone rubber with a small amount of carbon added to prevent aging. The dust boot 10, which has an elongated cylindrical shape with a predetermined length, has an inward engaging collar 11 on the inner periphery of its rear end that fits into an engaging groove 6 in the circumferential direction on the outer periphery of the cylindrical fixture 4. Therefore, the dust boot 10 protrudes from the cylindrical fixture 4 by a certain length and is attached to cover the inner cable 3.
By cutting out the inner periphery in the circumferential direction, a plurality of thin parts 12 that are thinner than other parts are formed at intervals in the length direction of the dust boot 10.

When assembling the end of the control cable 1, connect the latch 19 of the inner cable 3 to the valve opening adjustment lever of the carburetor, fit the cylindrical fixture 4 into the mounting groove 8 of the frame 7, and align the axis. When the marking piece 17 is located at the tip of the dust boot 10, as shown by the chain line in FIG. By tightening from both sides of the groove 8, the end of the outer casing 2 is fixed to the frame 7, and the outer casing 2
The position of the inner cable 3 in the axial direction is adjusted to a predetermined position, and when performing the work, the marking piece 17 is placed inside the dust boot 10 as shown by the solid line in FIG. Even if it is hidden, the mark piece 17 can be seen through the semi-transparent dust boot 10. In particular, in this embodiment, the thin part 12 of the dust boot 10 is thin, so light does not pass through it. It is easily permeable, and since the marker piece 17 is coated with fluorescent paint, the position of the inner marker piece 17 can be easily confirmed from the outside of the dust boot 10 through the thin part 12. The relative position of the dust boot 10 in the axial direction can be easily seen, and the work of adjusting the position of the outer casing 2 with respect to the inner cable 3 can be easily performed.

In the first embodiment, since the marker piece 17 is coated with fluorescent paint, there is an advantage that the position of the marker piece 17 inside the dust boot 10 can be easily recognized even in a dimly lit engine room.

Next, the dust boots according to the second to fifth embodiments of the present invention will be explained based on FIGS. 2 to 6. The dust boots 20 of the second embodiment shown in FIGS. The circumference is elongated along the length direction,
In addition, a plurality of thin-walled portions 22 are formed at intervals in the circumferential direction by cutting the cross-section into an arcuate shape, and the dust boot 3 of the embodiment shown in FIG. 3 shown in FIG.
0 is a dust boot 40 according to a fourth embodiment shown in FIG. , a plurality of thin-walled parts 42 are formed at intervals in the length direction by cutting the outer periphery in the circumferential direction, and the dust boot 50 of the fifth embodiment shown in FIG. Thin wall portions 52 are formed by spiral cutting, and thick and thin wall portions are alternately located in the length direction.

7 and 8 show modified examples of the marker piece 17 fixed to the inner cable 3, and the marker piece 27 shown in FIG. 7 has a circumferential groove 28 formed on its outer periphery, in which the fluorescent paint is collected. The 8th
The mark piece 37 shown in the figure has a circular recess 38 formed on its outer periphery so that fluorescent paint can be collected therein, and both mark pieces 27, 37 can be used even if their outer circumferential surfaces are rubbed against other members, etc. Fluorescent paint is applied to each groove 2.
8. It has the advantage of remaining in the recess 38 and maintaining visibility for a long period of time.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention; FIG. 1 is a cross-sectional view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view of a dust boot of the second embodiment, and FIG. 3 is a cross-sectional view of A of FIG. −
The A-line sectional view, Figures 4, 5, and 6 are, respectively,
7 and 8 are cross-sectional views of the dust boots of the third, fourth, and fifth embodiments, and are perspective views of modified examples of the mark pieces of the first embodiment. 1: Control cable, 2: Outer casing, 3: Inner cable, 4: Cylindrical fixture,
7: Frame, 10, 20, 30, 40, 50:
Dust boots, 12, 22, 32, 42, 52:
Thin portions, 17, 27, 37: Marker pieces.

Claims (1)

[Claims for Utility Model Registration] 1. A cylindrical fixture is fixed to the terminal of the outer casing of a control cable in which an inner cable is slidably inserted into the outer casing, and the cylindrical fixture is fixed to a fixing member such as a frame. While pulling out the inner cable from the fixture, a mark piece is fixed to a portion of the inner cable protruding from the cylindrical fixture, and a dust boot covering the inner cable is attached to the cylindrical shape at the fixed part of the mark piece. 1. A control cable terminal device fitted to a fixture, wherein the dust boot is made of a transparent material through which the marking piece can be seen. 2. The control cable according to claim 1, wherein the dust boot is partially formed with a thin part through which the mark piece can be easily seen. 3. The control cable according to claim 1 or 2, wherein the mark piece is coated with fluorescent paint.