JPH0791429A - Vibration control structure of control cable - Google Patents

Abstract

PURPOSE:To provide vibration control structure of a control cable intended to enhance operation sense of a transmission elver. CONSTITUTION:A structure comprises a resin sleeve 2 in which an inner cable is loosely fitted, a flange portion 32 having externally a collar 321, an aluminum alloy hub 3 tightened in rear portion to an outer casing 801, and a metal pipe sleeve 4 in which the resin sleeve 2 is fitted and of which tip is fitted into tip of the aluminum alloy hub 3. And then, it includes a rubber member 5 covering the aluminum alloy hub 3 and the metal pipe sleeve 4, from rear portion of the flange portion 32 through the flange portion 32 to middle of he metal pipe sleeve 4, a ring 6 for tightening the rubber member 5 and a cap 7 fitted to outside of he rubber member 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration structure for a control cable that transmits a speed change operation of a speed change lever to an automatic transmission.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 and 5, a control cable 110 for connecting a connecting rod (not shown) connected to an outer lever of an automatic transmission and an eye rod (not shown) of the transmission lever. , A resin sleeve 120 into which the control cable 110 is loosely fitted, and a metal hub 14 whose rear portion is caulked and fixed to the outer casing 130.
0, a metal pipe sleeve 150 in which a resin sleeve 120 is fitted and a tip portion is internally fitted to the metal hub 140, and a metal pipe sleeve 150 from the rear side of the flange portion 141 to the vicinity of the center of the metal pipe sleeve 150 via the flange portion 141. Hub 14
0 and a cushion rubber 160 with a curl (grooving around the outer circumference) 161 covering the outer circumference of the metal pipe sleeve 150.
And a seal rubber 165, a ring 170 for crimping the seal rubber 165 near the center, and a cap 190 bent and crimped around the cushion rubber 160 and the seal rubber 165 via a washer 180. The cap 190 is retained by the retainer. An anti-vibration support device B for a control cable is known which is fixed to an automatic transmission housing (neither is shown) via a clip.

[0003]

In the vibration-damping support device B for the control cable described above, the cushion rubber 160 with the currant 161 provides the two-step characteristic shown in FIG. 6 and is soft in the low load range of the cable load. The vibration of the automatic transmission side can be prevented, and the rigidity can be shown in the high load range to receive the repulsive force of the inner cable.

However, in the above-mentioned two-step characteristic caused by the cushion rubber 160 with the curls 161, the change in the characteristic in the second step does not significantly appear, so that the supporting device B cannot obtain sufficient rigidity in the high load range, The anti-vibration support device B for the control cable has a problem that it lacks a feeling of gear shift operation.

Further, in order to provide rigidity in the high load range, it is necessary to use a cushion rubber 160 having a hardness of about 55 ° and a slightly hard rubber material, and the vibration isolating support device B of the control cable is used in the low load range. Is inferior in anti-vibration property.

An object of the present invention is to provide a vibration-proof structure for a control cable, which improves the feeling of speed change operation of the speed change lever.

[0007]

[Means for Solving the Problems] In order to solve the above problems,
The present invention has the following configurations. (1) A vibration isolation structure for a control cable that connects the automatic transmission side member and the shift lever side member, and has a resin sleeve into which the inner cable is loosely fitted and a flanged flange portion, and the rear side is the outer casing. A tubular metal hub that is caulked and fixed, and a metal sleeve that fits in the resin sleeve and has a front end internally fitted in the front portion of the metal hub, and the flange from the rear side of the flange with flange. A rubber member that covers the outer periphery of the metal hub and the metal pipe sleeve through the attached flange portion to the vicinity of the center of the metal pipe sleeve, a ring that crimps the rubber member in the vicinity of the center, and a rubber member of the rubber member. And a cap that is attached to the outer periphery, and the cap is fixed to the vehicle body side member.

(2) In addition to the structure of (1) above, the rubber member of the portion covering the flanged flange portion is made of low hardness rubber.

[0009]

[Operation and effect of the invention]

[Claim 1] Since the flange is provided on the flange portion of the metal hub, the thickness of the rubber member at the flange position becomes thin, and even if a low hardness rubber material is used, the portion of the cable load Great rigidity can be achieved in the high load range, and the shifting operation feeling of the shifting lever can be improved during shifting.

[Claim 2] When a rubber having a low hardness is used for the rubber member covering the flanged portion of the flange, the rubber material bends in a low load region of the cable load due to the action of the rubber having a low hardness, thereby providing a softness. As shown, since the vibration from the automatic transmission side is absorbed, it is possible to improve the shift operation feeling of the shift lever at the time of shifting and also to improve the vibration damping property in the low load range.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. A vibration isolation support device A for a control cable shown in the figure includes an inner cable 1, a resin sleeve 2, an aluminum alloy hub 3, a metal pipe sleeve 4, a rubber member 5, a ring 6, and a cap 7. , The cap 7
A retainer and a clip are attached to the concave portion 70 of the, and the retainer is attached to an automatic transmission housing (neither is shown).

The inner cable 1 is formed by bundling a plurality of metal element wires, and connects the tip of one end 11 to a connecting rod (not shown) that connects to an outer lever (member of the automatic transmission) of the automatic transmission. , The other end is connected to the tip of the eye rod of the shift lever (shift lever side member) (neither is shown). When a gear shift operation (not shown) is performed, the inner cable 1 slides in the left-right direction in the figure, whereby the automatic transmission is set to the first speed, the second speed, the drive position, or the like.

The resin sleeve 2 is made of PEED (polyester elastomer), has a tip bent portion 21 that is deflected outward, and fits the inner cable 1 loosely.

The hub 3 made of aluminum alloy, which is formed by aluminum die casting and has a substantially cylindrical shape, has a tapered inner peripheral locking surface 3.
1, the flange portion 32 extending outward, and the curved portion 33 are provided, and the extending rear portion 34 is caulked and fixed to the outer casing 801. A flange 321 is provided on the outer circumference of the flange portion 32.
Are laid around.

The metal pipe sleeve 4 is a resin sleeve 2.
And the tip end surface is in contact with the tip bending portion 21, and the tip portion 41 that bends outward at the position of the bending portion 33 is slidably fitted onto the front portion 35 of the aluminum alloy hub 3. is doing.

The rubber member 5 includes a cushion rubber 51 (neobrene rubber; rubber hardness 40 °) that covers the outer periphery of the aluminum alloy hub 3 from the rear portion to the front portion of the flange portion 32, and the rear portion contacts the front surface of the cushion rubber 51. It is constituted by an aluminum alloy hub 3 and a seal rubber 52 covering the outer circumference of the metal pipe sleeve 4 from the front of the flange portion 32 to the vicinity of the center of the metal pipe sleeve 4. Incidentally, chloroprene rubber having the same hardness may be used instead of neoprene rubber.

The ring 6 is a member for swaging the front portion of the seal rubber 52 near the center of the metal pipe sleeve 4.

The cap 7 is made of metal, and the washer 71 is provided at the rear of the cushion rubber 51 and the caulking portion 7 is provided.
21 and includes a washer 71, a cushion rubber 51, and a cap body 72 that covers the outer circumference of the seal rubber 52.

The vibration isolating support device A for the control cable of this embodiment has the following advantages. [A] A flange 321 is provided on the outer circumference of the flange portion 32 extending outward.
Are laid around. A soft cushion rubber 51 having a rubber hardness of 40 ° is used.

Therefore, the load is in a low load range (range 80 in FIG. 3).
In 2), the rubber material is bent by the cable due to the action of the low hardness rubber, and the vibration from the automatic transmission side is absorbed.

Further, since the flange 321 is provided around the outer periphery of the flange 32, the thickness of the cushion rubber 51 at the position of the flange 321 is thinned, so that the load-displacement characteristic is changed when the load region shifts from the low load region to the high load region. It changes remarkably (see the graph in FIG. 3) and shows a large rigidity in the high load range of the cable load.

Therefore, as is clear from the characteristic comparison graph of FIG. 7, the vibration isolation performance during non-shift operation (low load range) is improved as compared with the conventional vibration isolation support device B for the control cable, and the cable load is reduced. Since the large rigidity is exhibited in the high load range, the shift operation feeling of the shift lever at the time of the shift operation can be improved with respect to the vibration isolation support device B.

[A] A flange 321 is provided around the outer periphery of the flange 32 to make the cushion rubber 51 soft (for example, rubber hardness 40 °). Since it is possible to form the anti-vibration support device A for the control cable simply by applying it to the device B, the cost does not increase significantly.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view of an anti-vibration support device for a control cable according to an embodiment of the present invention.

FIG. 2 is an enlarged half cross-sectional view of a main part of the anti-vibration support device.

FIG. 3 is a graph showing load-displacement characteristics (characteristics between an aluminum alloy hub and a cap in the axial direction) in the vibration-damping support device.

FIG. 4 is a half cross-sectional view of a conventional vibration isolation support device for a control cable.

FIG. 5 is an enlarged half cross-sectional view of a main part of a conventional anti-vibration support device.

FIG. 6 is a graph showing load-displacement characteristics (characteristics in the axial direction between the cap and the metal hub) in the conventional vibration-damping support device.

FIG. 7 is a characteristic comparison graph comparing load-displacement characteristics of a vibration isolation support device for a control cable according to an embodiment of the present invention with load-displacement characteristics of a conventional vibration isolation support device.

[Explanation of symbols]

A Anti-vibration support device for control cables (vibration control structure for control cables) 1 Inner cable 2 Resin sleeve 3 Aluminum alloy hub (metal hub) 4 Metal pipe sleeve 5 Rubber member 6 Ring 7 Cap 32 Flange (flange flange) Part)

Claims (2)

[Claims] 1. A vibration isolation structure for a control cable connecting an automatic transmission side member and a speed change lever side member, comprising: a resin sleeve into which an inner cable is loosely fitted; a flanged flange portion; and a rear side outer portion. A tubular metal hub that is caulked and fixed to the casing, a metal pipe sleeve in which the resin sleeve is fitted, and a tip portion is internally fitted to a front portion of the metal hub, and a rear side of the flanged flange portion. A rubber member that covers the outer periphery of the metal hub and the metal pipe sleeve through the flanged flange portion to the vicinity of the center of the metal pipe sleeve; and a ring that crimps the rubber member near the center. With a cap assembled to the outer periphery of the member,
A vibration-proof structure for a control cable in which the cap is fixed to a member on the vehicle body side. 2. The vibration isolating structure for a control cable according to claim 1, wherein the rubber member of the portion covering the flanged flange portion is made of low hardness rubber.