JPH0244634Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention provides an adjustment body that supports the end of the operating cable.
The present invention relates to an end position adjusting device for an operating cable, which is attached to a mounting body so as to be movable in the longitudinal direction of the operating cable by rotation thereof.

[Conventional technology]

The conventional end position adjusting device has a rotary operation part that grips and rotates itself on the adjusting body, and has a rotary operation part that rotates the adjusting body with respect to the mounting body in order to stop the adjustment body from rotating with respect to the mounting body. A system in which a tightenable nut member is screwed onto an adjusting body (for example, Japanese Utility Model Publication No. 42-22573) has been considered.

[The problem that the idea aims to solve]

However, in order to adjust the position of the end of the operating cable using the adjusting body in order to correct the position of the supporting end based on the elongation of the operating cable, the nut member must be loosened and the adjusting body must be in a state where it can be rotated. After the adjustment, the rotary operating part must be operated, and vice versa, the nut member must be tightened to prevent the adjustment body from rotating so that the supporting end of the operating cable does not change its position unexpectedly. Not only does it take a lot of effort to perform the adjustment operation, but also the rotation operation of the adjustment body using the rotary operation section does not provide a clear sense of operation and has the disadvantage that it is difficult to feel the degree of adjustment.

The purpose of the present invention is to make it possible to adjust the position of the support end of the operating cable with a simple operation and maintain it in a state where it does not change unexpectedly, and to make it easier to feel the adjustment.

[Means to solve the problem]

The characteristic configuration of the operating cable end position adjusting device of the present invention is that a rotary operating body is provided which is externally engaged with the adjusting body so as to rotate together with the adjusting body, and a first engagement of the rotary operating body with respect to the adjusting body is provided. A permitting portion is provided at the joint portion to allow the rotary operating body and the adjusting body to move relative to each other in a direction toward and away from the mounting body, and a spring is provided for biasing the rotary operating body in a direction closer to the mounting body. In addition, a second engaging portion that engages with each other based on the biasing force of the spring is provided between the rotary operating body and the mounting body, and the second engaging portion is connected to the rotating operation body of the rotary operating body. In addition to gradually preventing
The mechanism is formed into a click mechanism that gives a click feeling to the rotation operation, and its functions and effects are as follows.

[Effect]

In other words, the operating cables may stretch with use,
Even if the operability through the operating cable deteriorates and it becomes necessary to adjust the position of the supporting end of the operating cable, by rotating the rotary operating body, the rotating operating body can be operated by the spring. It is possible to rotate the second engaging part while disengaging it against the biasing force, and at the same time, as the rotary operating body rotates, the adjusting body that supports the end of the operating cable is rotated from the first engaging part. The second engaging part is rotated integrally through the joining part, and the position of the end of the operating cable to be supported is changed and adjusted accordingly, and the second engaging part is automatically engaged again by the spring. In addition, when rotating the rotary operating body, the second engaging portion forming the click mechanism allows the operation to be performed step by step, while also providing a large and responsive click feeling directly to the operator via the rotating operating body. can get.

[Effect of idea]

Therefore, by simply rotating the rotary operating body, the end position of the operating cable can be easily adjusted with little effort, and the adjusting body can be mounted by engaging the second engaging portion with the spring. Rotation is prevented relative to the body, preventing unexpected rotation, and the adjusted state can be maintained reliably.

What's more, the clicky rotation operation allows
The feeling of adjustment is easier to feel, and as a result, the operability for adjustment and the reliability of operation have been improved.

(Embodiment) The illustrated embodiment is an adjustment device for an operating cable 1 consisting of an operating wire 11 and an outer tube 12 that guides the wire 11, and includes a mounting body 2 having a threaded hole 21 and a screw threaded on the outer periphery. and a cylindrical shaft portion 3 that is screwed into the screw hole 21 so as to be movable in the axial direction by rotational operation.
1 and an adjusting body 3 having a bowl-shaped head 32 having a larger diameter than the cylinder shaft portion 31 and supporting one end of the outer cylinder 12. A cylindrical rotary operating body 4 that is non-rotatable and movable relative to the portion 32 in the axial direction is fitted,
A cylindrical extension part 41 that extends in the direction of the mounting body 2 and has an inward annular flange 42 at the extended end is provided at one end of the operating body 4, and the annular flange 42 of this cylindrical extension part 41 and the annular flange 42 of the cylindrical extension part 41 A spring 5 for biasing the operating body 4 toward the mounting body 2 is provided between the end face in the axial direction with the head 32, and an engagement recess 6 is provided in one of the cylindrical extension portion 41 and the mounting body 2. and on the other hand, an engagement protrusion 7 that engages with the engagement recess 6, and these engagement recesses 6 and engagement protrusion 7 prevent the adjustment body 3 from rotating in stages. , a click mechanism is constructed which gives a click feeling to the rotation of the adjustment body 3.

In the above configuration, the mounting body 2 is, for example, a fixing member C in the rear transmission B as shown in FIG.
The adjustment body 3 is formed integrally with the adjustment body 3.
The insertion hole 33 for the wire 11 is provided in the center, and a plurality of protrusions 34 extending in the axial direction are provided on the outer periphery of the head 32 of the adjusting body 3 at predetermined intervals in the circumferential direction. be.

Further, the operating body 4 is formed to have a larger diameter than the outer diameter of the head 32, and has the protruding strip 34 on its inner peripheral surface.
A concave line 43 corresponding to the concave line 43 is provided, and the engagement between the concave line 43 and the convex line 34 disables rotation relative to the adjustment body 3 and transmits the rotation of the operation body 4 to the adjustment body 3. 4 can be moved in the axial direction with respect to the adjusting body 3. Further, a plurality of anti-slip protrusions 44 are provided on the outer peripheral surface, and the engaging protrusion 7 is provided on the end surface of the cylindrical extension 41. The operating body 4 is made of synthetic resin, but may be made of other metals. In addition, when formed from synthetic resin,
For example, a metal plate having the engaging protrusion 7 may be embedded to increase the strength.

Further, the click mechanism adjusts the click pitch, that is, the engagement interval between the engagement recess 6 and the engagement protrusion 7, such that the click mechanism adjusts the click pitch, that is, the engagement interval between the engagement recess 6 and the engagement protrusion 7, to make noise when a chain meshes with one sprocket of a multi-stage sprocket device, for example. The stable region width H in which no noise occurs is set as a guide, but it is also possible to set the angle pitch by equally dividing the rotation angle corresponding to the stable region width H, or to set the stable region width H as a pitch. The pitch may be smaller or larger than the corresponding rotation angle. In addition, when making the pitch of the small angle, it is preferable to divide the angle into equal parts. In the drawing, four engaging recesses 6 are provided at 90 degree intervals, and the engaging protrusions 7 are
There are two pieces spaced 180 degrees apart, but these angles can be selected arbitrarily.

The stable region may contact a pulley plate in a chain guide having a pulley that meshes with a sprocket of the chain, or the inner plate of the chain may contact teeth of a sprocket that meshes with the chain, or the chain This is the region where the edge of the pin does not make noise due to contact with the teeth of the sprocket adjacent to the sprocket that engages with the chain. The stable region width H is determined by the type of sprocket, chain guide and chain, the distance between each sprocket, the shape of the sprocket teeth, the difference in the number of teeth between each sprocket, etc.

The adjusting device constructed as described above is installed, for example, in a rear transmission B having a chain guide G as shown in FIG. Then, the operating wire 11 with a hook fixed to one end is inserted into the insertion hole 33 of the adjustment body 3, and the hook is attached to the lever of the speed change operating device having a positioning mechanism for setting the position of the operating lever. At the same time, the tip of the wire 11 is
While being fixed to the movable member of the transmission B, one end of the outer cylinder 12 is supported by the head 32 of the adjustment body 3, and the other end is supported by the fixed member of the speed change operation device, The operating force of the operating lever is transmitted to the movable member via the wire 11, the chain guide G is moved in the axial direction of the multi-stage sprocket device by a constant stroke, and the chain is moved to one sprocket of the multi-stage sprocket device. It is replaced.

Therefore, if the length of the wire 11 with respect to the outer cylinder 12 is appropriate, the chain guide G
is in the stable region H with respect to the sprocket with which the chain meshes, as shown in FIG.

By repeating the speed change operation using the operating lever, the wire 11 is extended or the outer cylinder 12 is contracted, and the relative effective length between the operating wire 11 and the outer cylinder 12 becomes longer, and the chain If the guide G stops in the unstable region O, which is outside the stable region H, and a noise starts to occur when the chain engages with the sprocket S, hold the outer periphery of the rotary operating body 4 and remove the operating body. In this case, the operating body 4 is rotated at once every certain rotation stroke corresponding to the click pitch.
The operating body 4 is rotated once or multiple times.
The adjustment body 3 rotates in conjunction with the mounting body 2.
At the same time, the outer tube 12 supported by the adjusting body 3 is pressed by a certain stroke in the direction of the arrow in FIG. The relative effective length between the tube 12 and the operating wire 11 is adjusted, and the chain guide G immediately moves in the direction of the arrow in FIG. 6 and returns to the stable region H.

Then, due to the rotation of the operating body 4, after the engagement protrusion 7 disengages from the engagement recess 6, it engages with the engagement recess 6 at a position displaced by 90 degrees. It gives a feeling.

However, the click pitch of the click mechanism is
In the case where the rotation angle is set at a pitch corresponding to the stability area width H, for example, if the stability area width H is 1/3 of the distance L between the sprockets S as shown in FIG. The operating body 4,
By rotating the chain guide G a maximum of three times by a certain rotation stroke, it is possible to accurately return the chain guide G to the stable region, and also to return the chain guide G to the stable region width H at once. When the relative effective length of the operating cable 1 is changed and adjusted due to movement, the range until the next adjustment can be increased, and the frequency of adjustment can be reduced accordingly.

As described above, each rotation operation gives a click feeling, so it is possible to naturally confirm that the adjustment has been made properly, and this adjustment state can be maintained reliably.
Furthermore, since the click feeling is directly transmitted to the rotary operating body 4, the adjustment operation can be made with great feedback. In addition, since the rotary operation body 4 fitted on the outer periphery of the head 32 of the adjustment body 3 is rotated, in other words, it is operated by holding a portion with a larger diameter than the head 32, so that a small It can be operated easily using the operating force. Moreover, since the adjustment body 3 moves in the axial direction with respect to the rotary operation body 4 that fits on the outer periphery of the head 32 of the adjustment body 3, even if the operation amount of the operation body 4 is increased beyond a certain amount, This allows the spring 5 and the cylinder shaft portion 31 to be prevented from being exposed to the outside. Further, since the convex strip 34 provided on the outer periphery of the head of the adjustment body 3 can be molded together with the head 32 and the cylinder shaft part 31,
The cost of the adjusting body 3 can be reduced compared to the case where a rotation preventing surface is provided on the threaded portion of the outer periphery.

In the embodiment described above, a screw is provided on the outer periphery of the cylindrical shaft portion 31, but in other cases, this screw is not provided and, for example, one engagement member is provided on the outer periphery of the cylindrical shaft portion 31 that protrudes into the threaded hole 21. A protrusion may be provided so that the engagement position of the engagement protrusion with the threaded groove portion can be changed by rotating the rotary operating body 4.

Further, although the cylindrical extension 41 is provided with the engagement protrusion 7 and the mounting body 2 is provided with the engagement recess 6, these engagement protrusions 7
and the engagement recess 6 may be provided oppositely.

In addition, although the outer tube 12 is supported on the adjustment body 3,
In addition, the operation wire 11 may be supported.

Furthermore, although the explanation has been made regarding the device for adjusting the relative effective length of the operating cable 1 consisting of the operating wire 11 and the outer tube 12, there are other methods for adjusting the length of the operating cable consisting only of the operating wire 11. It is also good. In this case, for example, the attachment body 2 is provided on the movable side member of the transmission B or the operation lever of the speed change operation device, and a hook body is fixed to the head 32 of the adjustment body 3 to one end of the operation wire 11. It hangs.

Further, the adjusting device of the present invention is a fixed member C of the transmission.
In addition to being attached to a transmission, it may also be attached to a link member or a movable member of a transmission.In addition to being attached to a transmission, it may also be attached to a speed change operation device or a frame of a bicycle.

When attached to the speed change operation device, for example, the eighth
As shown in the figure, a mounting portion 22 with a screw hole 21 is attached to a base member having a lever shaft that supports the operating lever L.
and a cover part 23 which has an engagement recess 6 and is removably engaged with the mounting part 22, and the adjustment body 3 is inserted into the screw hole 21.
The outer cylinder 12 is supported by the head 32, and the operating wire 11 is locked to the operating lever L.

The engagement portion between the protrusion 34 and the groove 43 is referred to as a first engagement portion, and the operation body 4 is moved relative to the adjustment body 3 in the axial direction at the protrusion 34 and the groove 43. The part of the function that can be enabled is called the permission part.

Further, the engagement portion between the engagement recess 6 and the engagement protrusion 7 is referred to as a second engagement portion.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing one embodiment of the device of the present invention, Fig. 2 is a sectional view of the click mechanism portion, Fig. 3 is a sectional view taken along the line shown in Fig. 1, and Fig. 4 is a side view of only the mounting body. , Figure 5 is a side view of only the rotary operating body, Figure 6 is a side view of only the rotary operating body.
FIG. 7 is an explanatory diagram of the stable region, FIG. 7 is an explanatory diagram showing the state in which it is installed in a rear transmission, and FIG. 8 is an explanatory diagram in which it is shown in the state in which it is installed in a speed change operation device. DESCRIPTION OF SYMBOLS 1... Operating cable, 2, 20... Mounting body, 3... Adjusting body, 31... Cylinder shaft part, 4... Rotating operating body, 41
... Cylindrical extension part, 5 ... Spring, 6 ... Engagement recess,
7... Engaging protrusion.

Claims (1)

[Scope of utility model registration request] An operating cable end position adjusting device in which an adjusting body 3 supporting the end of the operating cable 1 is attached to a mounting body 2 so as to be movable in the longitudinal direction of the operating cable 1 by rotating the adjusting body 3, A rotary operation body 4 is provided which is externally engaged with the adjustment body 3 so as to rotate integrally with the adjustment body 3,
A first engaging portion of the rotary operating body 4 with respect to the adjusting body 3 is provided with a permitting portion that allows the rotary operating body 4 and the adjusting body 3 to move relative to each other in the direction of distance with respect to the mounting body 2; A spring 5 is provided that biases the rotary operating body 4 in a direction approaching the mounting body 2, and the rotary operating body 4 and the mounting body 2 are engaged with each other based on the biasing force of the spring 5. a second engaging part is provided, and the second engaging part is formed into a click mechanism that blocks the rotational operation of the rotary operating body 4 in stages and gives a click feeling to the rotational operation. end position adjustment device.