JPS6227926Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an outer cable support structure for a remote-controlled speed change operation mechanism configured to transmit a speed change operation of a speed change operation lever to a transmission using a push-pull cable.

2. Description of the Related Art

A remote-controlled gear shift mechanism used in automobiles, etc. transmits the gear shift operation of a gear shift lever located inside the vehicle to a transmission located at a remote location via an appropriate transmission mechanism. According to
This is to switch the transmission to a predetermined gear position. By the way, a link mechanism has conventionally been widely used as a transmission mechanism for this remote control. However, due to recent improvements in product technology for push-pull cables, push-pull cables have recently come to be widely used as transmission mechanisms. This is because it is cheaper to use a push-pull cable, or because the cable is highly flexible and allows a greater degree of freedom in designing the location of the transmission and the gear shift operation lever. Particularly recently, there has been a trend toward front-engine, front-drive (FF) vehicles in order to improve fuel efficiency and comfort (increase the interior space of the vehicle), and as a result, many shift control mechanisms are now remotely controlled. In particular, when a horizontally mounted front engine is adopted, a remote control type is inevitably required. In this case, a shift control lever disposed on the floor of the vehicle interior and a transmission disposed on the side of the engine are generally connected by two push-pull cables. One of the push-pull cables is for shift operation, and the other is for select operation. 〓〓〓〓

[Conventional technology]

Figure 1 shows an example of a remote-controlled gear shift operation mechanism using a push-pull cable, which is the subject of the present invention.The gear shift lever is installed on the floor of the passenger compartment, and the transmission is mounted on a horizontally mounted engine. An example is shown in which it is installed on the side of the In FIG. 1, reference numeral 1 indicates a gear shift operating lever, 2 indicates a transmission, 3 indicates an engine, 4 indicates a push-pull cable for shift operation, and 5 indicates a push-pull cable for select operation. The gear shift operation lever 1 is
It is supported on a retainer 6 fixed to the floor of an automobile (not shown) so as to be swingable in the direction of arrow A with a shaft 7 as a rotation axis, and in the direction of arrow B with a shaft 8 as a rotation axis. The operation in the direction of arrow A is a shift operation, and this shift operation is transmitted as a rotational motion to the shift and select lever shaft 9 of the transmission 2 via the push-pull cable 4. Further, the operation in the direction of arrow B is a select operation, and this select operation is transmitted as an axial movement to the shift and select lever shaft 9 via the bell crank 10, the push-pull cable 5, and the bell crank 10'. Therefore, the operation of the gear shift operation lever 1 by the driver is transmitted to the transmission 2 through these two push-pull cables 4 and 5.
Achieve a predetermined gear. The support for the fixing member in these two push-pull cables 4 and 5 is provided by the outer cable 4.
This is done at least at both ends of a and 5a.
In other words, the support on one side of the shift operation lever 1 is as follows:
Two holes are bored in the fixing part 6a formed by bending the front part of the retainer 6 at a substantially right angle, and the outer cables 4a, 5a are placed through the holes, and the outer cables 4a, 5a are integrally attached to both the outer cables 4a, 5a. Insert the U-shaped clip 13 into the groove of the fixing hub 11, 11' attached to the
13' is inserted to integrally support it. The other side of the transmission 2 is supported by a bracket 15 fixed to the transmission 2 with a plurality of bolts 14, with fixed parts 15a and 15a' standing upright.
The outer cables 4a, 5a are placed through the two holes drilled in the holes a, 15a', and the grooves of the fixing hubs 16, 16' integrally attached to the outer cables 4a, 5a in the same manner as described above. U-shaped clip 1
8 and 18' are inserted to integrally support it.

[Problem that the invention attempts to solve]

However, as described above, the outer cable 4 is supported by the fixing part 6a of the retainer, which is a fixing member, and the fixing parts 15a, 15a' of the bracket.
a and 5a have high overall rigidity. Therefore, when both ends of the outer cables 4a and 5a are supported with high rigidity, that is, when they are supported almost integrally, vibrations of the power plant system (especially the engine and transmission) are transmitted through the outer cables 4a and 5a into the vehicle interior. The noise is transmitted to the retainer 6 on the side of a certain speed change operation lever 1, and noise is generated in the vehicle interior from various parts such as the speed change operation lever 1 supported by the retainer 6. Therefore, it is conceivable to support the outer cables 4a and 5a with relatively soft elastic bodies at both ends to absorb the vibrations of the power plant system and prevent noise generation (vibration-proof support structure for outer cables). is known, for example, from Japanese Utility Model Publication No. 12041/1983). However, according to this support method, since a relatively soft elastic body is used, the outer cables 4a, 5a easily undergo large relative displacements due to elastic deformation between the outer cables 4a and 5a and the fixing member. For this reason, when a load is applied to the push-pull cables 4 and 5 due to the operation of the speed change operation lever 1, elastic deformation occurs and the operation feeling is deteriorated. That is, it is said that it is preferable to give the driver a sense of moderation when changing gears, but this sense of moderation is impaired by excessive elastic deformation of the support portion. Also,
Excessive elastic deformation increases the invalid stroke of the remote-controlled speed change operation mechanism, and the stroke of the speed change operation lever 1 inevitably increases accordingly. Therefore, an object of the present invention is to improve the support structure for the fixing member of the outer cable.
The objective is to prevent transmission of vibration from the power plant system, reduce cabin noise, and at the same time improve the operating feeling during gear shifting operations.

[Means to solve the problem]

Therefore, the present invention employs the following configuration as a means for solving the above-mentioned problems. In other words, the present invention provides a remote-controlled speed change operation mechanism using the above-mentioned push-pull cable.
In the outer cable support structure, the transmission side end of the outer cable is supported via a relatively soft elastic body that can sufficiently absorb vibrations, while the gear shift operation lever side end of the outer cable is supported by a rigid body or elastically deformed. A flange that is supported via a small number of relatively hard elastic bodies and further has the elastic body integrally provided on the outer circumferential surface of the outer cable, and an inner circumferential surface of a fixing hub that is attached to the outer cable so as to surround the flange. It is characterized by being interposed between the recess formed in the. Specifically, using FIGS. 1 and 2 as examples, the remote-controlled speed change operation mechanism using a push-pull cable controls the speed change operation of the speed change operation lever 1 using the push-pull cables 4 and 5. It is configured to transmit the information to the transmission 2 via. The outer cables 4a, 5a of the push-pull cables are supported by fixing hubs 16a, 11a relative to the fixing members 15, 6 at least at both ends on the transmission 2 side and the shift operation lever 1 side. The transmission 2 side end portions of the outer cables 4a, 5a are supported via a relatively soft elastic body 17 that can sufficiently absorb vibrations. Further, the end portions of the outer cables 4a, 5a on the speed change operation lever 1 side are supported via a rigid support or a relatively hard elastic body with little elastic deformation. Furthermore, the elastic body 17 is connected to the outer cable 4
A collar 23 integrally provided on the outer peripheral surface of the outer cables 4a, 5a, and a collar 23 surrounding the collar 23,
It is interposed between the fixing hub 16a and a recess 19 formed in the inner peripheral surface of the fixing hub 16a attached to the fixing hub 5a.

[Effect]

According to the above-mentioned means, the outer cables 4a, 5
Since the transmission 2 side end at point a is supported via the relatively soft elastic body 17, most of the vibrations of the power plant system are absorbed by this support. On the other hand, since the end portion on the side of the speed change operating lever 1 is provided with a rigid support or an elastic support with little elastic deformation, the outer cables 4a, 5a are firmly fixed to the fixing member 6. Therefore, the outer cables 4a, 5a
relative displacement with respect to the fixed member 6 is suppressed to a small value. Further, the elastic body 17 is attached to the outer cables 4a, 5.
A collar 23 integrally provided on the outer peripheral surface of a, and the collar 2
3, the fixing hub 16a is attached to the outer cables 4a, 5a so as to surround the outer cables 4a, 5a.
Vibrations in both the pulling and pushing sides are effectively absorbed. At the same time, the relative displacement between the outer cables 4a, 5a and the fixing hub 16a is suppressed to be as small as possible.

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The structure of a remote-controlled speed change operation mechanism using a push-pull cable to which the present invention is applied is the same as the structure shown in FIG. 1 described above, so a description thereof will be omitted. FIG. 2 is a sectional view showing the outer cable support structure according to the first embodiment of the present invention, and shows the push-pull cable 4 for shift operation in FIG. 1. 4a is an outer cable, 4b is an inner cable, and the inner cable 4b is the outer cable 4.
It is slidably inserted into a. In this push-pull cable 4, the right direction in FIG. 2 is the speed change operating lever side, and the left direction is the transmission side.
A fixing hub 11a is integrally attached to the outer circumferential surface of the outer cable 4a at the end on the speed change operation lever side by press fitting or adhesive. A groove 12 is formed at the right end of the fixing hub 11a as shown in the figure, and a U-shaped clip 13 shown in FIG. . On the other hand, a cylindrical fixing hub 16a is attached via rubber 17 to the end of the outer cable 4a on the transmission side. The rubber 17 is attached as follows.
That is, a disk-shaped collar 23 is integrally formed to protrude from the outer peripheral surface of the outer cable 4a, and a recess is formed in the inner peripheral surface of the fixing hub 16a to surround the collar 23 in correspondence with the collar 23. 19 is formed. The collar 23 is positioned within this recess 19, and the rubber 17 is interposed between the two. This rubber 17 is made of a relatively soft material suitable for absorbing vibrations. Further, in the rubber 17 that supports the end of the outer cable 4a on the transmission side, the wall thickness _t1 on the transmission side with the collar 23 in between is equal to the wall thickness on the speed change operation lever side.
It is set smaller than t ₂ . In other words, the amount of elastic deformation toward the transmission side is the same as the amount of elastic deformation toward the transmission lever side.
It is set smaller than the shape. This is to suppress the invalid stroke as small as possible during the speed change operation. That is, when you operate the gear shift operation lever and push the inner cable 4b toward the gearbox,
The outer cable 4a is also pushed toward the transmission. Conversely, when the inner cable 4b is pulled toward the speed change operation lever, the outer cable 4a is also pulled toward the speed change operation lever. At this time, the outer cable 4a
Since the end on the gear shift operating lever side is supported by a rigid body, there is no increase in the invalid stroke, but the end on the transmission side is elastically supported by the rubber 17, so the elastic deformation of the rubber 17 increases the invalid stroke. Therefore,
By setting the amount of elastic deformation toward the transmission side of the rubber 17, on which the outer cable 4a receives a load during a speed change operation, to be small, it is possible to further suppress the invalid stroke during the speed change operation. On the other hand, since the amount of elastic deformation of the rubber 17 toward the speed change operating lever does not directly affect the increase in invalid stroke, it can be set to a size suitable for absorbing vibrations. In this embodiment, the end of the outer cable 4a on the gear shift operating lever side is integrally attached to the fixed part 6a of the retainer via the fixing hub 11a, so that relative displacement of the outer cable 4a is prevented. This can be prevented and a good shift feeling can be obtained. At the same time, outer cable 4a
The soft rubber 17 interposed at the end of the transmission side can absorb vibrations from the power plant system. Furthermore, since the rubber 17 that elastically supports the end on the transmission side is interposed between the collar 23 and the recess 19 surrounding the collar 23 as described above, vibrations in both the pulling side and the pushing side are effective. can be absorbed into. Moreover, since the relative displacement between the outer cable 4a and the fixing hub 16a can be suppressed as small as possible, it plays the role of reinforcing the support on the gear shift operation lever side, making it possible to obtain even better shift feeling. . FIG. 3 is a sectional view showing an outer cable support structure according to a second embodiment of the present invention. In FIG. 3, parts corresponding to those in FIG. 2 are designated by the same reference numerals as in FIG. 2, and detailed explanation thereof will be omitted. In this embodiment, the outer cable also supports the speed change operation lever side using an elastic support structure. That is, regarding the support structure on the gear shift operation lever side, the outer cable 4 is similar to the first embodiment.
A disc-shaped collar 20 is formed on the outer peripheral surface of the fixing hub 11a', and a recess 21 is formed on the inner peripheral surface of the fixing hub 11a', with a rubber 22 interposed between the two. However, unlike the rubber 17 used on the transmission side, the rubber 22 used in the support structure on the gear shift operation lever side is a relatively hard rubber.
This is such that there is almost no relative displacement between the outer cable 4a and the fixing hub 11a'. Further, the rubber 22 has a wall thickness t ₃ on the speed change operation lever side with the collar 20 interposed therebetween, and is set smaller than a wall thickness t ₄ on the transmission side. In other words, the amount of elastic deformation toward the speed change operation lever side is set smaller than the amount of elastic deformation toward the transmission side. This is to suppress the invalid stroke as small as possible during the speed change operation. That is, when the inner cable 4b is pulled toward the speed change operation lever by operating the speed change operation lever, the outer cable 4a is also pulled toward the speed change operation lever. Since the end of the speed change operating lever is elastically supported by the rubber 22, the effective stroke increases due to the elastic deformation of the rubber 22. Therefore,
By setting a small amount of elastic deformation of the rubber 22, on which the outer cable 4a receives a load during a speed change operation, toward the speed change operation lever side, it is possible to further suppress an invalid stroke during a speed change operation. Therefore, in this embodiment as well, substantially the same effects as in the first embodiment can be obtained. In addition, since the structures of the supporting parts at both ends are the same except for the difference in the hardness of the rubber, it is possible to use common parts for the fixing hubs 16a and 11a' at both ends. Although the push-pull cable 4 for shift operation has been described in FIGS. 2 and 3, the push-pull cable 5 for select operation is similarly constructed. Although the present invention has been described above with reference to specific embodiments, the present invention is not limited to the above-mentioned embodiments, but includes various embodiments within the scope of the claims for utility model registration. For example, it can also be applied to a remote-controlled speed change operation mechanism in which the speed change control lever is provided on the steering column, and it is similar to the above embodiment as in the case of a vertically mounted engine.
It can also be applied when transmissions are disposed at different positions.

[Effect of the idea]

As described above, according to the present invention, since the transmission side end of the outer cable is supported via a relatively soft elastic body, most of the vibrations of the power plant system are absorbed by this supporting part and are not transmitted into the passenger compartment. Noise generation can be reduced. In addition, since the end portion on the side of the speed change operation lever is rigidly supported or elastically supported with little elastic deformation, the outer cable is firmly fixed to the fixed member, and the relative displacement of the outer cable bull to the fixed member is suppressed to a small level. Therefore, a good operational feeling with a sense of moderation can be obtained. Furthermore, an elastic body supporting the end of the outer cable is provided with a collar integrally provided on the outer circumferential surface of the outer cable, and a recess formed on the inner circumferential surface of a fixing hub attached to the outer cable so as to surround the collar. Since the structure is interposed between the two, it is possible to effectively absorb vibrations in both directions, the pulling side and the pushing side. Moreover, since the relative displacement between the outer cable and the fixing hub can be suppressed as small as possible, an even better operational feeling can be obtained. In addition, because the outer cable is configured as a remote control type,
It is placed through the partition plate that separates the engine compartment and the passenger compartment. Therefore, when vibrations are transmitted to the outer cable, the vibrations are also transmitted to the partition plate, causing a problem that generates noise in the passenger compartment. Therefore, the penetration part is also made of special elastic material to prevent vibration transmission. needed support. In this regard, according to the present invention, since vibrations transmitted from the power plant system are absorbed by the supporting portion of the outer cable on the transmission side, the structure is such that almost no vibrations are transmitted to the outer cable itself. . Therefore, it is possible to eliminate the need for vibration-proof elastic support between the outer cable and the partition plate in this penetrating portion, or to simplify the support structure thereof. Further, in the present invention, since the outer cable is more firmly fixed on the gear shift operating lever side, the support on the gear shift side can be a support structure that absorbs vibrations from the power plant system. As a result, the elastic body that can be used for this support part is much softer than the elastic body used when elastically supporting both ends for vibration isolation, and this makes it possible to It is possible to more effectively prevent the transmission of vibrations from.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a remote-controlled speed change operation mechanism to which the present invention is applied, FIG. 2 is a sectional view showing an outer cable support structure according to the first embodiment of the present invention, and FIG. FIG. 7 is a sectional view showing an outer cable support structure according to a second embodiment of the invention. Explanation of symbols: 1...Speed control lever, 2...Transmission, 4, 5...Push-pull cable, 4a,
5a...Outer cable, 6...Retainer (fixing member), 6a...Fixing part, 11a, 11a', 16
a...Fixing hub, 12...Groove, 13, 13',
18, 18'... U-shaped clip, 15... Bracket (fixing member), 15a, 15a'... Support part, 17... Soft rubber (elastic body), 20, 23
...Brim, 19, 21...Recess, 22...Hard rubber (elastic body). 〓〓〓〓

Claims (1)

[Claims for Utility Model Registration] A remote-controlled speed change operation mechanism configured to transmit the speed change operation of the speed change operation lever to the transmission via a push-pull cable, and at least an outer cable of the push-pull cable is provided. In an outer cable support structure of a remote-controlled speed change operation mechanism using a push-pull cable supported by a fixed hub to a fixed member at both ends on the transmission side and the speed change operation lever side, The side end portion is supported via a relatively soft elastic body capable of sufficiently absorbing vibrations, while the gear shift operation lever side end portion of the outer cable is supported by a rigid body or via a relatively hard elastic body with little elastic deformation. a collar that supports the outer cable and further includes the elastic body integrally provided on the outer peripheral surface of the outer cable;
An outer of a remote-controlled speed change operation mechanism using a push-pull cable, characterized in that the outer part is interposed between the flange and a recess formed in the inner circumferential surface of a fixing hub attached to the outer cable so as to surround the flange. Cable support structure.