JPS647382Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to operate a cable in which the clutch is held by a detent with a constant stroke, such as a control cable (hereinafter simply referred to as a cable) for operating a meshing clutch in construction machinery, etc. Concerning improvements to equipment.

Conventionally, operating devices of this type have been devised, as in US Pat. No. 2,319,04 and US Pat. No. 2,932,215, which have a structure in which the shaft is locked by tightening the collet with a screw.

However, in conventional devices of this type, vibrations generated in the device may be transmitted to the operating device, causing the screws to loosen, which causes the cable to return naturally. Also, since the stroke cannot be quantified, it is difficult to judge whether the engagement of the clutch is sufficient.For example, this may cause wear and tear on the clutch pawl, or the engagement of the clutch pawl may be too strong, causing unnecessary force in the pushing direction on the shaft. This causes the bearing to heat up and cause damage.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a cable operating device having a fixed stroke and a detent mechanism in the stroke.

To explain the device according to one embodiment of the present invention with reference to the drawings, FIGS. 1 to 4 are partially cutaway side views of the main parts showing the operating process of the device, and FIG. FIG. 2 is an exploded perspective view (partially omitted) of various parts schematically showing the apparatus of the embodiment shown in the figure.

Reference numeral 1 denotes a control cable consisting of an inner cable 2 and a conduit 3. The conduit 3 is fixed to one end of a main body 4, and a first notch mechanism 5 is provided in the main body 4 in the vertical direction of the axis. The one-notch mechanism consists of a first notch housing 5a projecting from the main body 4, a first notch ball 5b housed in the first notch housing, a spring 5c, and a set screw 5d. 6 is a guide mechanism provided facing the opposite side of the first notch mechanism;
A guide mechanism housing 6a is provided in a convex manner, and a guide ball 6b is housed in the housing, and is prevented from falling off by a set screw 6C. 7
is a second notch mechanism provided on the main body 4 in a horizontal direction with respect to the first notch mechanism 5 and the guide mechanism 6; It consists of a second notch ball 7b housed in a spring 7c, and a set screw 7d. Reference numeral 8 denotes a guide bush, to which a knob 11 is fixed at one end, and an inner cable 2 is pivotally connected to the other end, and furthermore, a square-shaped notch groove 9 and a square-shaped guide groove 10 are symmetrically formed on the outer peripheral surface. A pair of grooves 9a and 9 are carved in the notch groove 9, respectively.
b, 9c, guide groove 10 has 10a, 10b, 1
It has each position of 0c.

The operation of the present invention will be explained with reference to the drawings. Figure 1 shows the normal state of this device. Since the guide ball 6b is located in the guide groove 10a, even if the knob is pulled in the direction B, it will be held by the detent. Do not move in direction B.
In this case, the first notch ball 5b (hereinafter simply referred to as the first ball) is located in the notch groove 9, and the second notch ball 7b (hereinafter simply referred to as the second ball) is located in the guide groove 10.

When pulling the cable in the B direction, the knob 11 is first rotated in the C direction. In this case the first
The ball 5b is located in the notched groove 9a, and the second ball 7b climbs over the guide groove 10 and enters the notched groove 9. That is, the notch in the rotational direction of the knob can be obtained by the second ball 7b climbing over the outer peripheral surface from the notch groove 9 and invading into the guide groove 10, or vice versa. In this case, the guide ball 6b is located in the guide groove 10.

Next, when the knob 11 is pulled in the direction B, the first ball rides on the outer peripheral surface from the notched groove 9a, and when the knob 11 is completely pulled, the first ball 5b retracts into the notched groove 9b. That is, the axial notch is obtained by the first ball invaginating into 9a or 9b. At this time, the second ball passes through the notched groove 9 and is positioned at 9c.
In this way, at the position where the knob 11 is completely pulled in the direction B, the first ball 5b is located at the notch groove 9b, and the guide ball 6b is located at the guide groove 10. In this position, if a force in direction A is applied to the inner cable on the driven equipment side, it may naturally go over the notch, so complete locking is required. To do so, rotating knob 11 in direction D will The guide ball 6b is located in the guide groove 10b, and at the same time, the first ball moves from the notch groove 9b to the notch groove 9, and the second ball 7b rides on the outer circumferential surface from the notch groove 9c and further enters the guide groove 10c, and the B of the cable. Directional operation can be completely locked. As a result, even if a force in direction A is applied to the inner cable on the driven equipment side, the lock will naturally release and the cable will never return.

Although the operating order described above in detail for each part seems extremely complicated,
To briefly explain the operating state again, the normally locked cable is unlocked and the B
The procedure for sliding the lever in the C direction and locking it again is as follows: Rotate the lever 11 in the C direction to release the lock (notch provided) Pull the lever 11 in the B direction (notch provided) Rotate the lever 11 in the D direction to lock it.
(With a notch) It is a simple operation as stated.

Incidentally, if a notch mechanism is used for the above purpose, substantially one set of notches is enough to obtain notches in all directions. However, in reality, different forces are often required for the notching force in the rotational direction and the notching force in the sliding direction, and a notching mechanism is provided to cope with this.

The effect of the device of the present invention is that even if vibrations generated in a device different from the conventional screw locking mechanism are transmitted to the main body 4, the device is locked by the guide mechanism, so the lock can be easily released naturally. At the same time, the guide groove allows the inner cable to
Since it is possible to reliably grasp the stroke in the B and direction, it is possible to provide a device that can achieve unprecedented effects, such as being able to prevent wear and tear on devices such as dog clutches.

[Brief explanation of drawings]

The drawings are according to the present invention, and FIGS. 1 to 4 are partially cutaway side views showing the operation process of the device according to an embodiment of the present invention, and FIG. 5 is a structure of the present embodiment. FIG. 2 is an exploded perspective view (partially omitted) of various parts schematically showing the structure of the apparatus. 1: Control cable, 2: Inner cable, 3: Conduit, 4: Main body, 5: First notch mechanism, 6: Guide mechanism, 7: Second notch mechanism, 8: Guide bush, 9: Notch groove, 10: Guide groove , 11: Knob, 12: Bag nut.

Claims (1)

[Scope of utility model registration request] A cylindrical body with a bottom to which a control cable conduit is fixed at one end, and a first notch housing protruding outward in the radial direction on the outer circumferential surface of the body at an appropriate position perpendicular to the axis. , a first notch mechanism including a first notch ball housed in the first notch housing and urged in the axial direction of the main body by a spring; and further the first notch on the outer peripheral surface of the main body. a guide mechanism comprising a guide mechanism housing projecting radially outward at a position opposite to the housing; and a guide ball housed within the guide mechanism housing and appropriately protruding from the inner peripheral surface of the main body; Furthermore, a second notch housing is provided which protrudes in the horizontal direction at a position slightly shifted from the first notch mechanism and the guide mechanism; A second notch mechanism consisting of a second notch ball biased in the center direction is provided, the second notch mechanism is rotatably and slidably inserted into the main body, has a substantially columnar shape, and has a second notch mechanism on its outer circumferential surface.
A guide groove into which the guide ball is fitted to limit its movement within a certain range, and a notch into which the first notch ball and the second notch ball can fit into the outer peripheral surface of the guide groove at substantially symmetrical positions. It consists of a guide bush in which grooves are respectively carved, a knob is fixed to one end, and an inner cable is pivotally connected to the other end, and a cap nut to prevent the guide bush from falling off from the main body. A control cable operating device characterized by: