JPS6111475Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a throttle lever device for an engine in a management work machine such as a tiller or a rice transplanter.

Conventionally, the throttle wire built into the throttle lever device was manufactured separately from the throttle lever device, and when assembling the throttle lever device to the handle of the control work machine, it was first disassembled and the throttle wire was connected to the throttle lever. After setting it in the device, it is assembled into the lever mounting base, and then the throttle wire is set in the throttle lever device by tightening the bolts through elastic washers.

For this reason, the throttle wire cannot be installed unless the assembled throttle lever device is disassembled again, resulting in the inconvenience of having to repeat the installation work.

In addition, with conventional throttle lever devices, when rotating the throttle lever from the high speed side to the low speed side when you want to return the engine rotation from high speed to low speed in an emergency such as an accident, the rotation of the throttle lever is difficult. The return force may be faster than the return force of the throttle wire, and in such cases, the throttle wire becomes slack, causing the throttle wire to jump out of the gap between the lever mount and the cover and get caught, causing the engine rotation to not return to low speed and causing an unexpected accident. It was dangerous.

This invention was made based on the above-mentioned circumstances, and its purpose is to make it possible to easily attach the throttle wire to the assembled throttle lever device, and to prevent the throttle wire from coming off when the throttle lever is operated. It is an object of the present invention to provide a throttle wire device for an engine that will never be used.

An embodiment of this invention will be described below with reference to FIGS. 1 to 8. In the figure, reference numeral 1 denotes a handle of a management work machine, and a throttle lever device 2 is attached to a predetermined position of the handle 1 by tightening bands 3 and 4 and a nut 5. The throttle lever device 2 is generally composed of a lever mount 6 and a lever body 7, and the lever mount 6 is provided with a pedestal 8 formed into a substantially hollow disk shape. At the peripheral edge 9 of this pedestal 8, there is a protruding edge 1 that partially protrudes outward and is higher than the peripheral edge 9.
0 is integrally formed. Further, a slit 11 for inserting the throttle wire is provided on one side of the peripheral edge 9, and a through hole 12 for inserting the tyre Sa of the throttle wire S is formed at the starting end of the slit 11 across the bottom of the pedestal 8. has been done. Furthermore, the terminal end of the slit 11 communicates with a through hole 13 formed in the protruding edge 10.
This through hole 13 includes a mounting portion for locking the outer wire end So of the throttle wire S and a slit for installing the inner wire Si of the throttle wire S. In addition, the pedestal 8
A shaft 14 with a female thread is provided upright in the center of the shaft. Also, of the stepped portions 5a and 5b formed by the peripheral edge 9 and the protruding edge 10, a portion of the peripheral edge 9 is cut outward on the stepped portion 5a side on which the slit 11 is formed. A cutout portion 9a is formed.

A shaft 1 is provided on the inner bottom surface of the pedestal 8 of the lever mount 6.
A bottom plate 15 having a hole formed therein so as to be able to fit with the bottom plate 4 is attached. This sill 15 has a notch 15 so that the tycoon Sa can be inserted at a position facing the through hole 12.
a is formed.

Furthermore, the lever body 7 is placed on the bottom plate 15.
is installed. A lever 16 is integrally provided on this lever body 7. The lever main body 7 is formed into a disc shape so as to be able to fit into the pedestal 8, and has a through hole 17 in the center thereof so as to be insertable into the shaft 14.
Further, a wire groove 18 around which the inner wire Si inserted through the slit 11 is wound is formed around its outer periphery. and,
An engagement hole 19 is provided at a predetermined position on the periphery of the lever body 7, into which a shaft Sa of the throttle wire S is set. A stopper edge 20 is formed at the base of the back surface of the lever 16 of the lever body 7 so that the lever 16 rotates by coming into surface contact with the side edge 9 of the lever mount 6. Formations are formed at both ends of the stopper edge 20. The stepped portions 20a, 20b and the stepped portion 5 of the protruding edge 10
The rotation of the lever body 7 is restricted by a and 5b.

A blocking plate 2 shown in FIG.
1 is installed. This closing plate 21 has a curved surface that is almost the same as the peripheral edge 9, and is provided with a bent part 21a made of an elastic material at one end on the outside thereof.After the throttle wire S is set, the bent part 21a is
a and the notch 9a of the peripheral edge 9 are engaged. Further, a spring washer 22, a flat washer 23, and a spring washer 24 are successively interposed on the lever body 7, and then a push plate 25 for preventing rotation is attached. A bolt 26 is inserted through this press plate 25, and the lever mounting base 6
The lever 16 is screwed into the shaft 14 of the lever 16, and the desired rotational force of the lever 16 is maintained by the elastic force of the spring washer 22.

Next, a case will be described in which the throttle wire S is installed after the throttle lever device 2 configured as described above is attached to the handle 1. First, the throttle lever device 2 attached to the handle 1 is set as described below. That is, the bottom plate 15 is interposed on the shaft 14 of the lever mount 6 so that the through hole 12 of the lever mount 6 and the notch 15a of the bottom plate 15 are aligned. After this,
The closing plate 21 is interposed inside the peripheral edge 9 of the lever mounting base 6 where the slit 11 is not formed, and the bent portion 21a of the closing plate 21 is inserted into the peripheral edge 9 as shown in FIG. position. The lever body 7, spring washer 22, flat washer 23, spring washer 24, and press plate 2
5 into the shaft 14, the bolt 26 is screwed in until a predetermined tightening force is achieved. The slot lever device 2 thus set is in a state where the through hole 12 of the lever mount 6, the notch 15a of the bottom plate 15, and the engagement hole 19 of the lever body 7 are aligned. To install the throttle wire S in this state, first insert the tyco Sa into the through hole 1 of the lever mounting base 6.
2 and set it in the engagement hole 19 of the lever body 7. Next, insert the throttle wire S into the slit 11 on the side edge 9 from the outside of the lever mount 6,
It is set in the wire groove 18 of the lever body 7 and the through hole 13 of the lever mount 6. In this way, the throttle wire S is connected to the throttle lever device 2.
After setting the closing plate 21 to the notch 9a, hold the bent part 21a of the closing plate 21 and move it along the side edge 9 toward the notch 9a, and as shown in FIG.
a. As a result, the closing plate 21 closes the space between the slit 11 and the wire groove 18 in which the throttle wire S is inserted.

The throttle lever device 2 in which the throttle wire S is set as described above is located at a position where the stepped portion 20a of the stopper edge 20 of the lever body 7 is brought into contact with the stepped portion 5a of the protruding edge 10 of the lever mount 6, that is, on the low speed side. It is rotatable and can freely operate from the position to the high speed side position where the stepped portion 20b is brought into contact with the stepped portion 5b.

As explained above, according to this invention, a slit for inserting the throttle wire is formed on the outer periphery of the lever mount, which is formed into a substantially hollow disk shape, and a slit for the throttle wire is inserted at a predetermined position at the bottom communicating with the slit. Provide a through hole for
Further, an engagement hole for engaging the throttle wire coil and a wire groove for setting the throttle wire are formed on the outer periphery of the lever body, which is molded so as to be able to fit onto the inner periphery of the lever mounting base, and the outer periphery of the lever body and the lever mounting hole are formed. a closing plate that is movably interposed between the inner periphery of the base and has a bent part that engages with the notch of the lever mounting base when it moves to close the slit, etc. Because of this configuration, a separately manufactured throttle wire can be easily installed without disassembling the throttle lever device. Moreover, once the throttle wire is assembled into the throttle lever device,
Since the blocking plate closes the space between the slot and the wire groove, the throttle wire that is set incorrectly will not work even if the lever is operated harshly or the lever is returned quickly from the high speed side to the low speed side in an emergency. Since it will not come off, you can prevent the risk of accidents.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of this invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is A-A in Fig. 1.
Figures 4 and 5 show cross sections taken along line B-B in Figure 2, Figure 4 shows the state before the throttle wire is set, and Figure 5 shows the state after the throttle wire is set. 6 is an exploded perspective view of the throttle wire device, FIG. 7 is a perspective view showing the back side of the lever body, and FIG. 8 is a perspective view of the closing plate. 2...Throttle lever device, 6...Lever mounting base, 7...Lever body, 9...Periphery, 10...
Projecting edge, 11...Slit, 12...Through hole, 13
...Through hole, 18... Wire groove, 19... Engagement groove, S... Throttle wire, Sa... Tyco.

Claims (1)

[Scope of utility model registration request] A lever mounting base formed into a substantially hollow disk shape, having a slit formed on the outer periphery for the insertion of the throttle wire, and a through hole for inserting the throttle wire into the lever at a predetermined position at the bottom communicating with the slit; A lever body is fitably attached to the inner periphery, and has an engagement hole for engaging with the coil of the throttle wire and a wire groove for setting the throttle wire on the outer periphery. A closing plate movably interposed between the peripheries and having a bent part that engages with the notch of the lever mounting base when the closing plate moves and closes the slit etc. of the engine. Throttle lever device.