JPH0517100A - Handle device of shift fork - Google Patents

Abstract

PURPOSE:To house a fork moving handle to a side plate side surface of a finger bar while the handle is being attached to a shift screw. CONSTITUTION:An attaching shaft part 11 of an arm type handle 9 is joined to the shaft end part 4a of a shift screw 4 possible to be folded in the perpendicular direction to the axial direction with a pin 13. Moreover, a cylindrical slide guide 14 is slidably fitted to the attaching shaft part 11. The handle 9 is integrated with the shift screw 4 by engaging the top end part of the slide guide 14 with the shaft end part 4a in a state concentrically aligned with the attaching shaft part 11 by means of a spring 15, and moving operation of a fork 3 by the handle 9 in this state is made possible. The handle is housed and held by locking it to a handle holder 16 provided on the side plate 2 side surface of a finger bar 1 while turning the handle 9 around the pin 13 for folding after the slide guide 14 is separated from the shaft end part 4a, after the fork is operated to move.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift fork having an adjustable fork distance, which is known as one of attachments for forklifts, and more particularly to a handle device for manually rotating a shift screw for moving a fork.

[0002]

2. Description of the Related Art Generally, a shift fork of a forklift has a pair of left and right forks each having a shifter screwed to the shift screw by manually rotating an arm type handle attached to an end of the shift screw. It is designed to be moved laterally at the same time to adjust the fork spacing. In the case of a large-sized vehicle, there is also one in which the shift screw is divided into left and right parts so that the left and right forks can be independently moved. By the way, the handle attached to the shift screw is
If it is left as it is, it will greatly protrude to the side of the backrest and will interfere with running. Therefore, the handle is generally detachable, and after the fork is moved, the handle is removed from the shift screw and stored in a predetermined storage location. As such an example, for example, Japanese Patent Publication No. 3-4479 can be cited.

[0003]

However, the above-mentioned conventional method requires a troublesome work of detaching the handle each time the fork is moved, and it is necessary to specially secure a place for storing the handle. In addition, depending on how it is stored, the handle may fall off and be lost.

In view of the above problems, the present invention is to solve the problem to provide a handle device for a shift fork, which can be stored while being mounted on the shift screw by making the handle foldable. It is an issue.

[0005]

In order to solve the above problems, the present invention is configured as follows. That is, there is provided a handle device for a shift fork, wherein a fork is moved along the finger bar by rotating a shift screw rotatably laterally mounted on a side plate of the finger bar, and a shaft end portion of the shift screw. , The arm type handle mounting shaft is coaxially aligned and foldably connected by a pin in a direction orthogonal to the axial direction, and a cylindrical slide guide is provided on the outer periphery of the handle mounting shaft. The handle mounting shaft can be held concentrically with the shaft end of the screw shaft by slidably fitting and fitting the tip of the slide guide to the outer circumference of the shaft end of the shift screw. At the same time, the slide guide is always biased by a spring in a direction to be fitted to the shaft end of the shift screw, and the side plate is It is characterized in that a handle holder for holding the handle of the folding position.

[0006]

In the present invention constructed as described above, when the fork is moved, if the handle is removed from the handle holder and then the mounting shaft is rotated so as to be aligned with the shift screw, A tubular slide guide, which is always biased by a spring, is slidably fitted on the shaft end of the shift screw. As a result, the handle is integrated with the shift screw, so by operating the handle in this state to rotate the shift screw,
You can move the fork. On the other hand, after moving the fork, slide the slide guide against the spring to disengage it from the shaft end of the shift screw, then rotate the handle around the pin to fold it and lock it on the handle holder. The handle can be stored and held on the side surface of the side plate of the finger bar.

[0007]

Embodiments of the present invention will be specifically described below with reference to the drawings. In FIG. 4, which shows a shift fork of a forklift, a pair of left and right forks 3 are horizontally movably suspended on a pair of upper and lower finger bars 1 fixed to the front surface of a lift bracket that is vertically moved along a mast (not shown). Has been done. A shift screw 4 is horizontally arranged between the upper and lower finger bars 1, and both ends of the shift screw 4 are rotatably supported by side plates 2 fixed to both ends of the upper and lower finger bars 1. .. The shift screw 4 in this embodiment has a right-hand screw and a left-hand screw with a central portion as a boundary, and a shifter 5 attached to the rear surface of the left and right forks 3 is screwed into the shift screw 4.
Therefore, when the shift screw 4 is rotated, the left and right forks 3 are moved in directions in which they are separated from each other or close to each other, and the distance therebetween is adjusted. Each of the left and right ends of the backrest 6 provided for preventing the collapse of the load is formed to have an angled cross section, and the side surface of the angled portion 6a abuts the side plate 2 of the finger bar 1 from the outside. In this state, they are fixed by a plurality of bolts 7.

Next, a handle device mounted on one shaft end of the shift screw 4 will be described mainly with reference to FIGS. Both shafts of the shift screw 4 are rotatably supported by the side plate 2 via bushes 8. At least one of the shafts is a circular small-diameter shaft, and a minimum required length outward from the bushes 8 The shaft end 4a is formed with a forked portion for attaching the handle.

The handle 9 for operating the shift screw is provided with a circular mounting shaft portion 11 at one end of the handle arm 10 and the grip 1 at the other end of the handle arm 10.
2 is an arm type in which the overall shape is substantially Z-shaped, and the projection formed on the tip of the mounting shaft 11 is fitted into the bifurcated portion of the shaft end 4a of the shift screw 4 to form the pin 13
Is attached so as to be rotatable in the direction orthogonal to the axial direction. That is, the handle 9 has the mounting shaft portion 11 thereof.
Are concentrically connected to the shaft end 4a of the shift screw 4 so as to be foldable (refractive).

In this case, when the mounting shaft portion 11 of the handle 9 is aligned with the shift screw 4 on the same axis, as shown in FIG. 1, the mounting shaft portion 11 projects slightly outward from the side end surface of the backrest 6. Is set to the length of. Regarding the connection by the pin 13, the direction of the pin 13 and the direction of the handle arm 10 of the handle 9 are set to be parallel.

A cylindrical slide guide 14 is fitted on the outer periphery of the mounting shaft portion 11 so as to be slidable in the axial direction. The slide guide 14 has a tip end portion as shown in FIG. By fitting the outer periphery of the shaft end 4a of the shift screw 4 to prevent the attachment shaft 11 of the handle 9 from bending, the shift screw 4 and the handle 9 are integrated in the radial direction. The slide guide 1
Reference numeral 4 denotes a shaft of the shift screw 4 at all times by a spring 15 interposed between an outer peripheral surface of a small diameter portion formed on the mounting shaft portion 11 and an inner peripheral surface of a large diameter cylindrical hole formed on the slide guide 14. It is urged toward the end 4a side, which stabilizes the fitting posture.

Below the shaft end 4a of the shift screw 4, the side plate 2 of the finger bar 1 is provided.
The handle holder 1 is composed of a spring clip that is opened as a side receiving opening for storing and holding the handle 9.
6 is provided, on which the handle arm 10 of the handle 9 can be fitted and removed.

The handle device of this embodiment is constructed as described above, and when the fork 3 moves, the handle 9 in the storage position is first removed from the handle holder 16 and then rotated around the pin 13. .. And the mounting shaft portion 1
If the axis of No. 1 is aligned with the axis of the shaft end 4a of the shift screw 4, the slide guide 14 is slid toward the shaft end 4a by the pressing force of the spring 15 and fits on the outer periphery of the shaft end 4a. As a result, the handle 9 is integrated with the shift screw 4 as shown in FIG. Therefore, in this state, by rotating the handle 9 to rotate the shift screw 4, the fork 3 can be moved along the finger bar 1 and its interval can be adjusted. In this case, since the slide guide 14 is pressed against the shaft end portion 4a of the shift screw 4 by the spring 15, accidental disengagement during the rotation operation is avoided.

The moving operation of the fork 1 is completed at a position where the pin 13 is horizontal, that is, when the handle 9 can be bent downward and the handle arm 10 is at the rear, in consideration of the storage time. It is desirable to adjust so that Generally, the screw pitch of the shift screw 4 is
Since it is not so large, the position adjustment operation as described above does not cause any actual harm in setting the fork interval.

After the fork is moved, first, the slide guide 14 is retracted against the spring 15 and separated from the shaft end 4a of the shift screw 4. Subsequently, when the mounting shaft portion 11 of the handle 9 is pivoted downward around the pin 13 and bent, the handle arm 10 is fitted into the handle holder 16 as shown in FIGS. 2 and 3. In this state, the mounting shaft portion 11 of the handle 9 hangs along the side surface of the side plate 2, the handle arm 10 projects rearward horizontally, and the grip 12 hangs downward. That is, the handle 9 is stored along the side surface of the side plate 2 and stored on the back surface of the backrest without protruding from the side surface of the backrest 6. in this case,
Even if the handle arm 10 projects rearward, since the lateral width of the finger bar 1 is generally set to be wider than the left and right mast widths, this does not cause a substantial adverse effect.

This embodiment has a right-hand screw on one side,
The present invention is applied to the type in which the left and right forks 2 are simultaneously moved by using one shift screw 4 having a left screw on the other side, but it is needless to say that the present invention is also applicable to the type in which the shift screw is divided into the left and right, which is found in a large vehicle. .. Further, in the present embodiment, the handle 9 is bent downward to be stored and held, but the handle 9 may be bent upward.

As described in detail above, according to the present invention, the arm-type handle for the fork movement operation of the shift fork can be folded and stored along the side surface of the side plate while being attached to the shift screw. Therefore, the troublesomeness of the handle attaching / detaching work, which is required every time the fork moving work is performed, is released. Further, there is no need to separately provide a special storage space for storing the handle, and the accident of losing the handle can be avoided. Moreover, in the present invention, in the usage form of the handle, since the slide guide is held in the fitted state with respect to the shaft end portion of the shift screw by the spring, an accidental disengagement during the operation is avoided, which is useful for improving safety. is there.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a handle device according to an embodiment of the present invention, showing a case where a handle is used.

FIG. 2 is a plan cross-sectional view of the handle device, showing the handle retracted state.

FIG. 3 is a partially cut side view of the handle device, showing a state where the handle is stored.

FIG. 4 is an overall front view of a shift fork.

[Explanation of symbols]

1 ... Finger bar 2 ... Side plate 3 ... Fork 4 ... Shift screw 4a ... Shaft end portion 6 ... Backrest 9 ... Handle 10 ... Handle arm 11 ... Mounting shaft portion 13 ... Pin 14 ... Slide guide 15 ... Spring 16 ... Handle holding Ingredient

Claims (1)

Claims: What is claimed is: 1. A handle device for a shift fork, wherein the fork is moved along the finger bar by rotating a shift screw rotatably mounted on a side plate of the finger bar. And a mounting shaft portion of the arm type handle is concentrically aligned with the shaft end portion of the shift screw, and is foldably connected by a pin in a direction orthogonal to the axial center direction. A cylindrical slide guide is slidably fitted on the outer circumference, and the tip end portion of the slide guide is fitted on the outer circumference of the shaft end portion of the shift screw so that the mounting shaft portion of the handle is attached to the shaft end portion of the screw shaft. The slide guide can be held concentrically with respect to the slide guide, and the slide guide is always biased by a spring in a direction to be fitted to the shaft end of the shift screw. Shift fork of the handle device having a handle holder for holding the handle of the folding position to the side plate.