JPS59216215A - Operation lever device - Google Patents

Abstract

PURPOSE:To make it possible to operate a lever with a single hand and to lock it surely by porviding the operation lever with a lever stopper freely slidably and forming a lock groove part, to which the lever stopper should be fitted, in a lever groove. CONSTITUTION:When an operation lever 1 is set to a switched position B, a rod 7 is pulled upward because the lever 1 is in the state of rotation with a shaft 4 as the center. In this state, a fitting part 8C in the lower end of a lever stop per 8 is not fitted to a long groove part 8A of a lever groove 3 and rides on the circum ferential edge part of the long groove part 3A because the fitting part 8C is formed to have a diameter larger than that of the groove width of the long groove part 3A. When the lever 1 is turned and is placed in a switched position C, the rod 7 is displaced downward by the lever 1. Since a lever part 1A of the lever 1 is placed in the center of a lock groove part 3B in this case, the stopper 8 falls with its own weight while being guided by the lever part 1A, and the fitting part 8C in the lower of the stopper 8 is fitted to the groove part 3B to position the lever 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating lever device suitable for use in changing the position of, for example, a clutch lever, a spool operating valve lever, a parking brake lever, and the like.

Various operating lever devices are used in construction machinery, industrial machinery, vehicles, etc., and each of these operating lever devices is provided with a locking device for locking the operating lever at a predetermined operating position. As a locking device for this type of operating lever, a button type, a straight horn type, a groove type, etc. are often used.

The push-butane type locking device is used, for example, in an operating lever that is operated relatively infrequently, such as a parking brake lever. However, with this push-button type locking device, the push button must be pressed each time the lever is switched.
The drawback is that its operability is poor. For this reason, the push 227 type locking device has the disadvantage of being unsuitable for operating lever devices that are operated frequently, such as clutch levers.In addition, the 1 push button is provided at the tip of the lever, which improves operability. When this is taken into consideration, there is a drawback in that the mounting position of the lever is limited.

In addition, the stopper type locking device has a bar-shaped stopper that removably protrudes into a lever groove formed in the lever stand so as to be orthogonal to the lever groove, and 7. The stopper is made to protrude across the lever groove. The operating lever is locked by the .

This locking device can reliably lock the movement of the operating lever, and in order to release the locking device, it is only necessary to not protrude the stopper, so if the operating lever is operated frequently, This has the advantage that the operability of the lever can be prevented from deteriorating. However, this stopper-type lock device requires a two-handed operation method in which one hand operates the control lever and the other hand operates the stopper, which is not suitable for levers that are frequently operated, and it is difficult to forget to lock the device. It has the disadvantage of being easy to wake up.

Further, the groove-type locking device has a lever groove formed in the lever stand in an approximately L-shape, J-shape, etc., consisting of a groove in the lever operation direction and a groove extending perpendicularly from the cough groove, and When locked, the operating lever is guided into a groove perpendicular to the lever operating direction to exhibit the locking function, and the operating lever is pressed in the locking direction by a spring force to prevent the lever from returning. However, this groove-type locking device has a problem in that if a force greater than the spring force is applied, the locking function is easily released, resulting in malfunction. To solve this problem, it is necessary to use a type locking device in combination with the above-mentioned strut horn, which has the disadvantage of complicating the structure. Moreover, L on the lever stand
A groove-shaped, J-shaped, etc. groove must be formed, and a large space is required.For this reason, when a large number of operating levers are arranged on a limited lever stand surface, a groove-shaped lock is used. It is not possible to provide equipment.

The present invention has been made in view of the drawbacks of the prior art, and it is possible to operate the lever with one hand, automatically lock the lever when it is in the lock position, and to fit several operating levers in a narrow space. It is an object of the present invention to provide a control lever device which can be provided with a control lever and which allows the lever to be operated satisfactorily even when the control lever is operated frequently.

The present invention is characterized in that a lever stopper is slidably provided on the operating lever on the protruding side thereof, and a lock into which the lever stopper fits is provided by enlarging a portion of the lever groove in diameter. a groove is formed, and when the operating lever is rotated to a position corresponding to the lock groove, the lever strut/'P fits into the lock groove;
The operation lever is configured to be locked.

Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes an operating lever, and the operating lever 1 includes a rod-shaped lever part I.
A, a grill lug part IB fixed to the upper part of the lever part IA, and a shaft insertion hole I fixed to the lower part of the lever part IA.
It is composed of a boss part ID having C.

Reference numeral 2 denotes a lever groove forming member in which a lever groove 3 for guiding the lever part IA of the operating lever 1 is formed, and the lever groove forming member 2 is a box-shaped lever stand provided in the driver's cab, or The floor surface of a room, etc. is applied (in the following description, the lever groove forming member 2 will be described as a lever stand).

Here, the lever groove 3 extends in the operating direction of the operating lever 1 shown by arrow A in the figure, and includes a long groove part 3A with a slightly larger diameter than the lever part IA, and a long groove m3 at the right end of the long groove part 3A in the figure.
The large-diameter groove 3B is formed so as to be continuous with the long groove 3A, and has a circular shape with a larger diameter than the long groove 3A. (In the following description, the large diameter groove 3B will be referred to as a lock groove.) A shaft 4 is provided in the lever stand 2 in a horizontal direction, and the shaft 4 can be inserted into the shaft insertion hole 1c of the operating lever 1. , the operating lever 1 is rotatably supported on a lever stand 2. Further, the operating lever 1 passes through the lever groove 3 and projects out of the lever stand 2. In the figure, 5 is a hawk end, and the hawk end 5 is rotatably supported via a shaft 6 on a hawk end attachment part IE fixed to the death part ID of the operating lever 1, and the other end is equipped with a clutch and a control. A rod 7 is attached which is connected to a valve (not shown).

Reference numeral 8 denotes a cylindrical lever stopper that is slidably provided on the lever part IA of the operation lever 1 on the protruding side of the lever stand 2, and the inner diameter side of the lever stopper 8 is provided on the cough lever part IA.
There are 8 holes through which the lever is inserted in the axial direction, and the outer diameter side of the lever groove 3B has a slightly smaller diameter so that it can fit into the lock groove 3B of the lever groove 3. Therefore, when the operating lever 1 is at the position corresponding to the lock groove 3B, the lever lever 8 slides downward along the outer periphery of the lever part IA by its own weight so that it can fit into the lock groove 3B. is being done. Further, a locking portion 8B is formed near the lower end of the lever stop horn 8 and extends radially outward to lock the peripheral edge of the lock groove portion 3B from above. It becomes a fitting part 8C that fits into the lock groove part 3B and restricts rotation of the operating lever 1, and the upper end of the lever stopper 8 extends radially outward to form a finger rest part 8D. .

Therefore, in the present invention, the lock groove portion 3 of the lever groove 3
B and the lever stopper 8 constitute a locking device.

Next, the operation of the operating lever device configured as described above will be explained.

First, the position where the operating lever 1 is displaced to the right in the direction of entering the drawing is defined as a first switching position B, and the position where the operating lever 1 is vertical is defined as a second switching position C.

Assume that the operating lever 1 is now in the switching position B as shown in FIG. At this time, the operating lever 1 is in a state of rotation about the shaft 4, so it is pulled upward from the lock 9, and the clutch, control valve, etc. connected to the rod 7 are not operating. By the way, in this state, the fitting part 8C at the lower end of the lever stopper 8 is formed to have a diameter slightly larger than the groove width of the long groove part 3A of the lever groove 3, so the fitting part 8C does not fit into the long groove part 3A. Instead, it rests on the peripheral edge of the long groove 3A.

After that, when the grip part IB is squeezed and the operating lever 1 is rotated to the right in the input direction and positioned at the switching position C, the rod 7 is displaced downward by the operating lever 1, and the clutch,
Activate control valves, etc. In this position, the lever part IA of the operating lever 1 is located in the center of the lock groove 3B, so the lever stop A8 falls downward in the figure while being guided by the outer periphery of the lever part IA due to its own weight, resulting in the state shown in FIG. 1. 5, and the fitting part 8 at the lower end of the reper stop/4'8
C fits into the lock groove 3B to position the operating lever 1.

After that, in order to rotate the operating lever 1 again to the switching position B, hook the finger of the hand holding the grip part IB onto the finger hook part 8D at the upper end of the lever stop horn flat 8, and push the lever stop p48 upward. . As a result, the fitting portion 8C of the lever stopper 8 comes out of the lock groove 3B, and the operating lever 1 is unlocked, and the operating lever 1 is rotated to the right in the direction of the arrow to switch to the switching position B. Match.

Thereafter, by repeating this process, the operating lever 1 can be repeatedly operated between the switching position fB and the switching position C.

In addition. The grip part IB and the finger rest of the lever stopper 8 are part 8.
A spring may be provided between the lever stopper 8 and the lock groove 3B to urge the lever stopper 8 in the direction of engagement with the lock groove 3B.

With this configuration, regardless of the mounting orientation of the operating lever 1, the lever strut 8 is fixed at the switching position C.
can be fitted into the lock groove 3B. Further, in the above-mentioned embodiment, the lock groove 3B is formed at the right end of the lever groove 3, but the lock groove 3B may be provided at any position of the lever groove 3. It may be provided at the position.

In addition, the locking portion 8B is such that the lever stopper 8 is connected to the locking groove portion 3B.
Since the purpose is to prevent the device from falling downward, it is not limited to the flange-like structure, and various shapes can be adopted. Furthermore, the finger rest part 8D is the lever stopper 8.
For example, the finger rest may be configured to form a recess for use.

Since the operating lever device according to the present invention has been described in detail above, it achieves the following effects.

(2) Since the lever stopper through which the operating lever is inserted locks the movement of the operating lever by fitting into the locking groove, the operating lever can be reliably locked in the locking groove.

■ Just by rotating the operating lever to the lock position in the same way as normal lever operation, the lever will automatically enter the locked state, and no special operation is required to lock the lever, so it will have a negative effect on the original lever operation of the operating lever. Never.

■ Lever Strap iJ that can be slid freely on the operating lever? In addition, it is only necessary to slightly change the shape of the lever groove and provide a lock groove in which the lever stopper fits in the lock position of the operating lever, so it is easy to do so by making slight changes to the existing operating lever device. Moreover, since the shape of the lever groove can be just enough to fit the lever lever e, a plurality of operating levers can be arranged side by side in a narrow space on the lever stand surface.

■ To release the lock function, it is only necessary to push the lever stopper upward with the fingers of one hand that is gripping the Glitz 0 of the operating lever, and the lock can be released by a one-touch operation with one hand.

■ If a spring is provided between the lever part of the operating lever and the arm of the lever stopper, which biases the lever strut/IP in a downward direction, the lever stopper will not be affected by its own weight in the locked position, but will be The locking device can be fitted into the locking groove by force, and therefore, the locking device of the present invention can be applied even when the operating lever is not placed upright but is placed horizontally.

(2) Even when a single lever groove is provided with a plurality of locking positions, it is sufficient to simply form a plurality of locking grooves in the lever groove.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the operating lever device according to the present invention, and FIG.
The figure is a sectional view in the direction of the ■-■ arrow in Figure 1, Figures 3 to 6 are explanatory diagrams of the operation, and Figure 3 is the same as Figure 1 showing the operation lever in the - switching position. Similar longitudinal section, No. 4
The figure is a sectional view in the direction of the IV-IV arrow in FIG. (2) It is a cross-sectional view in the direction of the -M arrow. DESCRIPTION OF SYMBOLS 1... Operation lever, IA... Lever part, 2... Lever stand (lever groove forming member), 3... Lever groove, 3B... Lock groove part, 8... Lever stopper, 8
B...locking part, 8D...finger rest part. Figure 1 C Figure 2 IA 'l C Figure 3 Figure 4 1△

Claims (4)

[Claims] (1) A lever groove forming member formed with a lever groove, one end of which is rotatably supported on a shaft, the other end of which is provided so as to protrude through the lever groove, and which extends along the lever groove. In the operating lever device, the operating lever includes an operating lever that can be rotated by the lever, and the operating lever has a lever lever located on the other end protruding side. is slidably provided, and the lever groove is partially enlarged in diameter to form a lock groove portion into which the lever stopper fits, and when the operating lever is rotated to a position corresponding to the lock groove portion. An operating lever device characterized in that the operating lever is configured to be locked by fitting the lever stopper into the locking groove. (2) The operating lever device according to claim (1), wherein a locking portion is formed on the outer peripheral side of the lever stopper for regulating the depth of fitting into the lock groove portion. (3) The operating lever device according to claim (1), wherein the lever stopper has a finger catch portion formed on the outer circumferential side of the lever stopper when the Lenocous stopper is pulled up from the lock groove. (4) The operating lever device according to claim (1), wherein a spring is interposed between the operating lever and the lever stopper to urge the lever stopper in the direction of fitting into the lock groove. .