JPS645619Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an interlocking link mechanism in a brake clutch interlocking device used in a mobile work machine such as a combine harvester, in which the brake is actuated after the traveling clutch is disengaged by depressing the brake pedal. Regarding improvements.

In general, the travel clutch and brake have different strokes, and in particular, the travel clutch has a limited stroke range, and the timing of each operation is also different, so that the brakes are applied after the travel clutch is disengaged. When interlocking with a brake, it is difficult to obtain a position that meets the above-mentioned optimal stroke and timing conditions, and it is even more difficult to do so due to the relationship with the pedal position, etc. Furthermore, when used in a combine harvester, etc. There were restrictions on the mounting position, and it was not possible to mount it anywhere. Conventionally, in this type of brake clutch interlocking device, as shown in FIG. There were many systems in which the left and right side clutch wires H, H' were pulled by the shafts B, C, D and the links E, F, G that connected them, thereby disengaging the side clutches and applying the brakes. This has the disadvantage that when applying the brakes on a slope, the side clutch is difficult to disengage, and therefore the brake operation load becomes heavy.

Therefore, in the present invention, the shaft part engages with the engaging part of the cam groove at the initial stage of rotation based on the depression operation of the brake pedal, thereby
The arm member is rotated to disconnect the traveling clutch, and the shaft portion is then slid onto the cam groove sliding portion, thereby causing the arm member to stop and hold the traveling clutch at the disconnected position. It is an object of the present invention to provide a brake clutch interlocking link mechanism which operates a brake and eliminates the above-mentioned drawbacks.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

As shown in FIG. 1, this brake clutch interlocking device 1 includes a traveling clutch pedal boss portion 2 that rotates on the rotation axis, and a traveling clutch pedal boss portion 2 that rotates on the rotation axis.
A brake pedal boss part 3 is disposed above and adjacent to the traveling clutch pedal boss part 2 in a nested manner, for example. A traveling clutch pedal 5 is integrally fixed to one end of the traveling clutch pedal boss portion 2, and an arm member 7 is also integrally secured to the other end, that is, the brake pedal boss portion 3 side. When the pedal 5 is depressed in the direction of the arrow A, the clutch arm member 6 rotates in the direction of the arrow B, and the tension tensioner tensions and loosens the belt transmission device 8 which is wound around the engine shaft 8a and the drive shaft 8b via the rod 9. It is designed to disengage a traveling clutch 10 consisting of a shock clutch. A brake pedal 11 is integrally fixed to one end of the brake pedal boss 3, and a brake arm member 12 is integrally fixed to the other end, that is, the side closer to the traveling clutch pedal boss 2. 11 and the brake arm member 12, a traveling clutch actuation control plate 13 is also connected to the brake pedal boss portion 3.
is integrally fixed to. When the brake arm member 12 is rotated in the direction shown by the arrow C by stepping on the brake pedal 11, the brake wires 15, 15 connected to the ends of the brake arm member 12 Brakes 16, 16 of section 14 are adapted to be actuated, respectively. The traveling clutch operation control plate 13 includes:
As shown in FIG. 2, a cam groove 17 is formed, and the cam groove 17 is formed with a radial groove 17a facing in the direction of the axis, which is the center of rotation of the control plate 13, and a radial groove 17a that is formed around the axis. circumferential groove 1
7b are connected to form an L-shape. The cam groove 17 includes a boss portion 19 that rotates along another rotation axis parallel to the rotation axis, and a connecting member 20 that is fixed to the boss portion 19.
a, 20b and shaft portions 21a, 21b provided at each end of the connecting members 20a, 20b. The other shaft portion 21b is adapted to come into contact with the arm member 7 fixed to the traveling clutch boss portion 2 described above.

Since the present invention has the above-described configuration, when the traveling clutch 10 is disengaged, the traveling clutch pedal 5
When stepped on in the direction indicated by the arrow A in FIG. At this time, the arm member 7 fixed to the other end of the boss portion 2 simply rotates in the direction of the arrow H so as to separate from the shaft portion 21b of the link member, so the brake pedal 11 is moved away from the shaft portion 21b of the link member. It is in the position and does not operate in any way. Next, when applying the brakes 16, 16, when the brake pedal 11 is stepped in the direction of the arrow C, the boss part 3 rotates and the brake arm member 12 fixed to the boss part 3 moves. The clutch operation control plate 13 is rotated together in the direction of the arrow, and the brake pedal 1
1 and control plate 13 are rotated from the position shown in FIG. 2 to the position shown in FIG. Then, the shaft portion 21a of the link member 22 that engages with the radial groove 17a of the cam groove 17 of the control plate 13 is rotated about the boss portion 19 as the control plate 13 is rotated. Link member 22 rotated in the same way
The arm member 7 is rotated in the direction indicated by the arrow H by the shaft portion 21b, and the traveling clutch boss portion 2 is rotated at the same time to rotate the clutch arm member 6 in the direction indicated by the arrow B, so that the traveling clutch 10 is Cut as described above. Note that in the rotational position of the brake pedal 11 shown in FIG.
Since play is provided on the brakes 16, 16 side, the brakes 16, 16 are not yet in a braking state. Then, from the state in which the traveling clutch 10 is disengaged as shown in FIG.
1, the shaft portion 2 of the link member 22
1a is the circumferential groove 17 of the cam groove 17 of the control plate 13;
b along link member 22 as shown in FIG.
Since the traveling clutch 10 slides in the rotational position shown in FIG. 4, it is not operated at all from the disengaged state.
Only the brake arm member 12 is further rotated, thereby pulling the wires 15, 15 and putting the brakes 16, 16 into the braking state.

As explained above, according to the present invention, the arm member is rotated by the shaft portion engaging with the engaging portion of the cam groove at the initial stage of rotation based on the depression operation of the brake pedal. The travel clutch is disconnected by the arm member, and the brake is operated with the travel clutch being stopped and held at the disengaged position by the subsequent sliding of the shaft portion onto the cam groove sliding portion. Therefore, the traveling clutch 10 is reliably disengaged at the same time as the brake pedal 11 is depressed, and even though the brake 16 and the traveling clutch 10 are interlocked, the traveling clutch 10 can be operated without being bothered by the traveling clutch 10. The brake operation can be performed in good condition without deterioration of the brake operation feeling caused by the intervention of Therefore, the traveling clutch pedal 5 and the brake pedal 11 can be disposed without any problems.

[Brief explanation of drawings]

Figure 1 is a perspective view showing a brake clutch interlocking device to which the present invention is applied, Figures 2 to 4 are diagrams showing the operation of the travel clutch operation control plate, etc. of the present invention, and Figure 2 shows the brake and travel clutch interlocking device. Fig. 3 shows the positional relationship of the control plates, etc. when the running clutch is not operated or only the running clutch is in operation. 5 shows the positional relationship of the control plate, etc. when the traveling clutch is disengaged and the brake is applied. FIG. 5 is a perspective view showing a conventional brake clutch interlocking device. DESCRIPTION OF SYMBOLS 1... Brake clutch interlocking device, 2... Traveling clutch pedal boss part, 3... Brake pedal boss part, 7... Arm member, 10... Traveling clutch, 11... Brake pedal, 13... Traveling clutch operation control Plate, 16...brake, 17...cam groove, 21a, 21b...shaft part, 22...
Link member, -...axis, -...other axis.

Claims (1)

[Scope of utility model registration request] In a brake clutch interlocking device that disengages a travel clutch and operates the brake by rotation of a brake pedal, a brake pedal boss portion and a travel clutch pedal boss portion are rotatably disposed on the same axis, and the brake In the pedal boss section,
A traveling clutch actuation control plate is integrally provided with a cam groove formed of an engaging portion extending toward the brake pedal boss portion and an arcuate sliding portion centered on the brake pedal boss portion, and An arm member is integrally provided on the traveling clutch pedal boss portion, and a link member having a shaft portion on another axis parallel to the aforementioned axis is further provided, and based on the depression operation of the brake pedal, the aforementioned When the shaft part engages with the engaging part of the cam groove, the arm member is rotated to disconnect the running clutch, and by the subsequent sliding of the shaft part into the cam groove sliding part. . A brake clutch interlocking link mechanism, wherein the arm member is configured to operate the brake while the travel clutch is stopped and held at a disengaged position.