JPS6243385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an operation link device, particularly an operation link device suitable for use in a parking brake lever, and more specifically, it performs two different operations at the same time by operating one operation lever in one direction. The present invention relates to an operation link device.

Conventionally, operating link devices that perform different operations, such as a parking brake lever and a main clutch anti-sticking lever when retracted, have each been provided with a separate operating lever. For this reason, it is necessary to operate the parking brake lever when parking, and the main clutch anti-sticking lever when storing, which is cumbersome to operate, and incorrect operation may cause the aircraft to move while parked, or brake facings may occur while storing. Problems such as stalemate occurred. Furthermore, when parking the vehicle, it is convenient for operation to also disengage the main clutch, and it is expected that by operating the parking brake lever, the main clutch will be disengaged at the same time as the parking brake is operated.

Therefore, the present invention connects the operating lever to different operated members via play mechanisms, and operates the operating lever from the neutral position to the left and right operating positions without operating the other operated member. While operating one of the operated members, a connecting member is provided between the play mechanism and the operated member, respectively;
These linking members are brought into contact with each other, and movement of one linking member in the operating direction causes the other linking member to move in the operating direction, and movement of the other linking member in the operating direction causes one linking member to move in the operating direction. Configuring the pulling member so that it does not interlock,
Therefore, by operating an operating lever such as a parking brake lever in one direction, two different operations such as activating the parking brake and disengaging the main clutch are performed at the same time.
Another object of the present invention is to provide an operating linkage device which eliminates the above-mentioned drawbacks by operating the operating lever in the other direction to perform one of two different operations, such as disengaging the main clutch.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2, 1 is a parking brake lever used in a work vehicle such as a combine harvester, and is fixed to a fulcrum shaft 3 rotatably supported by a frame 2. ) can be operated into parking position A and storage position B. Also,
A plate 5 is welded to the other end of the fulcrum shaft 3 approximately at its center, and connecting rods 6 and 7 are connected to both ends of the plate 5, respectively. A sleeve 9 is rotatably supported on the frame 2, and a shaft 10 is rotatably supported on the sleeve 9. The sleeve 9 and the shaft 10 constitute a double shaft structure. Connecting plate 1 at each end
2 and 13, and arm 1 at the other end.
5 and 16 are welded. connection plate 12,
13, as shown in FIGS. 5 and 7, arc-shaped elongated holes 12a and 13a are formed with predetermined lengths centered on the rotation axes 10 and 9, respectively, and these elongated holes 12a, 13a slidably engages the ends of the connecting rods 6 and 7, respectively, thereby forming a play mechanism. Incidentally, when the parking lever 1 is in the neutral position N, both of the connecting rods 6 and 7 are set to be located at the upper ends of the elongated holes 12a and 13a. On the other hand, the arms 15 and 16 are made of two plates, and pins 19 and 20 are supported at the tips of the arms 15 and 16, respectively, so as to be sandwiched between these two plates. These pins 1
As shown in FIG. 3 in detail, 9 and 20 are notched on the sides facing each other, and these notched planes 19a and 20a abut and engage with each other to form a linkage member. are doing. As shown in FIG. 5, the arm 15 has a long hole 15a formed at its tip, and a pin 19 is slidably supported in the long hole 15a. 2
0 is rotatably supported. Furthermore, pin 19
A main clutch rod 21 is fixed by a nut, and a long hole 21a is formed at the tip of the rod 21, and a pin 23 provided on the main clutch pedal 22 can freely slide into the long hole 21a. is engaged in. On the other hand, a brake rod 25 is fixed to the pin 20 with a nut, and the rod 25 is connected to the parking brake via a brake wire 26. In addition, 27 and 28 in Figure 1
is a stopper, and plate 5 is passed beyond the point of consideration.
and move lever 1 to parking position A and storage position B.
to maintain stability. Further, arrow F indicates the forward direction of the work vehicle.

Since this embodiment has the above-described configuration, when parking the vehicle, the parking brake lever 1 is rotated in the direction of arrow a from the neutral position N to the parking position A, as shown in FIG. do. Then, the plate 5 also rotates in the same direction via the shaft 3, moving the rod 6 downward as shown by arrow b and moving the rod 7 upward as shown by arrow c. Then, the tip of the rod 6 is inserted into the long hole 1 of the connecting plate 12.
The connecting plate 12 only slides downward from the upper end of the connecting plate 2a along the long hole 12a as shown by the arrow d, but the rod 7 engages with the upper end of the long hole 13a of the connecting plate 13. The connecting plate 13 is rotated in the direction of arrow e in order to move the tip further upward. Further, the rotation of the plate 13 causes the arm 16 to rotate in the direction of arrow f through the sleeve 9, and pulls the brake wire 26 in the direction of arrow g through the pin 20 and rod 25, thereby operating the parking brake. At the same time, as the pin 20 moves in the direction of the arrow f, the notch planes 19a, 2
Based on the contact of 0a, the pin 19 is also integrally linked,
The arm 15 is slid in the direction of the arrow h along the long hole 15a, and the main clutch rod 25 is further pulled, and the main clutch pedal 22 is rotated in the direction of the arrow i via the long hole 21a and the pin 23. The main clutch is disconnected.

When the vehicle is to be stored, the parking brake lever 1 is rotated from the neutral position N in the direction of arrow j to the storage position B, as shown in FIG. Then, the rod 6 is moved through the plate 5 in the direction of arrow k, and the rod 7 is moved in the direction of arrow l. As a result, the connecting plate 12 rotates in the direction of the arrow m based on the upward movement of the rod 6 located at the upper end of the elongated hole 12a.
The rod 7 located at the upper end of the connecting plate 13 only slides in the direction of arrow n along the elongated hole 13a, and the connecting plate 13 does not move. Therefore, due to the rotation of the connecting plate 12, the arm 15 rotates in the direction of arrow o via the shaft 10, and the elongated hole 15a of the arm 15 rotates.
The pin 19 located at the left end of the main clutch pedal 22 is rotated integrally with the arm 15, and the rod 21 is further pulled in the direction of the arrow p, and the main clutch pedal 22 is moved in the direction of the arrow i through the elongated hole 21a and the pin 23. direction, and the main clutch is disengaged. At this time, depending on the movement of the pin 19 in the direction of the arrow o based on the arm 15,
Since the cutout planes 19a and 20a of both pins 19 and 20 are separated, there is no effect on the pin 20 and therefore on the parking brake. This prevents the main clutch from sticking due to disengagement of the main clutch, and also prevents the brake facing from sticking due to the parking brake being deactivated.

As explained above, according to the present invention, the operating lever 1 is connected to different operated members 22 and 26 via the play mechanisms 12a and 13a, and the play mechanisms and the operated members are connected to each other. Since the members 19 and 20 are provided, the operating lever 1 can be operated in one direction to simultaneously perform two different operations, and the operating lever 1 can be operated in the other direction to perform one of the two different operations. Therefore, 1
Based on the book operating lever 1, different operations can be performed as required, erroneous operations can be prevented, and the device can be simplified. In particular, the operating lever is the parking brake lever 1, and the continuous traction member 19,
20, the operated member that is interlocked is the main clutch 22, and the operated member that is not interlocked with the linkage member is the parking brake 26, then the parking brake lever 1
By operating in the opposite direction, it is possible to operate to the parking position A and the storage position B, thereby preventing malfunctions due to incorrect operation.In addition, there is no need for a special main clutch anti-sticking device, and the device is extremely simple. Furthermore, by operating the parking brake lever 1 to the parking position A, the main clutch can be disengaged at the same time as the parking brake is operated, which is extremely convenient in terms of operation.

[Brief explanation of the drawing]

Fig. 1 is a front view of an operation link device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line of Fig. 1, Fig. 3 is a perspective view showing a linking member (pin), and Fig. 4 is a A front view of the operating link device showing the parking brake operating state, FIG. 5 is a side view showing the connecting plate and arm portion thereof, FIG. 6 is a front view of the operating link device showing the retracted state, and FIG. 7 is the connecting plate. FIG. 1... Operation lever (parking brake lever), 1
2, 13... Connection plate, 12a, 13a...
Play mechanism (elongated hole), 19, 20... Connection member (pin), 19a, 20a... Contact surface (notch plane),
22...Operated member (main clutch pedal), 26
...Operated member (parking brake wire).

Claims (1)

[Claims for Utility Model Registration] (1) An operating lever is connected to different operated members via a play mechanism, and when the operating lever is operated from the neutral position to the left or right operating position, each of the other operated members In addition to operating one of the operated members without operating the member, a connecting member is provided between the play mechanism and the operated member, and these connecting members are brought into contact with each other, and the operating direction of one of the connecting members is An operation link device configured such that the movement of the other linking member causes the other linking member to move in the operating direction, and the movement of the other linking member in the operating direction does not move one linking member. (2) Scope of utility model registration claims where the operating lever is a parking brake lever, the operated member that is interlocked by the linkage member is the main clutch, and the operated member that is not linked by the linkage member is the parking brake. The operation link device according to item 1.