JPH0667958U - Transmission operating device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a transmission operating device in which a shift lever can be manually operated, and particularly a transmission operating device in which a select operation can be manually performed. According to the transmission operating device of the present invention, a hole 14 is formed in the select rod 3 and a window 16 is formed in the select rod housing 2 corresponding to the moving range of the hole 14, and the hole 14 is engaged with the hole 14. An operating tool 19 for fitting is provided, and the shaft portion 19a of the operating tool 19 is inserted from the window 14 to engage with the hole 14, and the operating tool 19 is moved to move the select rod 3. ing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transmission operating device operated by compressed air or the like.

[0002]

[Prior art]

 In large vehicles, the electromagnetic switching valve is operated in response to the operation of the change lever, and the operating rod is operated by the compressed air supplied thereby, and the shift lever engaged with the operating rod is operated. A transmission operating device is adopted.

[0003]

[Problems to be solved by the device]

 By the way, in such a transmission operating device, when the operating rod operating system such as the electromagnetic switching valve, for example, the select rod operating system fails, when the shift lever is in the shift position of the high speed stage, for example, there is a failure. Although there is no shift rod operating system, the shift lever can be returned to the neutral position, but the shift lever cannot be moved to the low speed stage, which makes it difficult to drive the vehicle.

Therefore, an object of the present invention is to provide a transmission operating device in which a shift lever can be manually operated, and in particular, a variable speed operating device in which a select operation can be manually performed. .

[0005]

[Means for Solving the Problems]

 In the transmission operating device of the present invention, the operating member mounting locking means is formed on the select rod, and the window for the select rod housing corresponding to the moving range of the locking means is formed. An operating tool for engaging the mounting locking means is provided, and the operating tool is inserted through the window to engage the operating tool mounting locking means, and the operating tool is moved to move the select rod. I am trying to move it.

In the transmission operating device of the present invention, a mark indicating the select position is further provided on the periphery of the window.

[0007]

[Action]

 If the select rod operation system out of the operation rod operation systems such as the electromagnetic switching valve fails, take out the separately provided operation tool and insert the tip of the operation tool into the inside of the select rod housing window. Then, the tip is engaged with the locking means for mounting the operation tool of the select rod, and the operation tool is operated from outside the housing for the select rod to move the select rod. At that time, the movement position of the select rod is read through the operation tool by a mark indicating the select position on the periphery of the window of the select rod housing.

[0008]

【Example】

 1 to 3 show a transmission operating device according to the present invention.

In this device, as shown in FIG. 1, a select operation cylinder 1 is arranged on the upper surface of the transmission A. The select rod housing 2 of the cylinder 1 is provided with a select rod 3 slidably in its axial direction. The select rod 3 has a piston 4, which defines pressure chambers 5, 6.

Free pistons 7 and 8 are arranged at both ends of the housing 2. These free pistons 7 and 8 are arranged facing the end faces 3a and 3b of the select rod 3. The free pistons 7 and 8 define pressure chambers 9 and 10 and atmospheric pressure chambers 11 and 12.

A striker 13 is fixed to the intermediate portion 3c of the select rod 3. The striker 13 is provided with an operating tool attachment locking means 14. The operating tool attachment locking means 14 of this embodiment is formed of a hole (hereinafter, indicated by reference numeral 14). Further, a cutout 15 is formed in the striker 13.

A window 16 is formed in a portion of the housing 2 facing the hole 14 of the striker 13. As shown in FIG. 1, the shape of the window 16 is rectangular, and the size thereof is larger than the operation range of an operation tool inserted into the hole 14 and described later. Then, symbols N1, N2, N3, N4 indicating the selected position are provided on the periphery of the window 16. As shown in FIG. 2, the window 16 is covered with a lid 17, and the lid 17 is fastened to the housing 2 with bolts 18.

The operation tool 19 is usually provided separately from the housing 2, and is composed of a shaft portion 19a and a handle portion 19b, as shown in FIG.

Further, in this device, as shown in FIG. 1, a shift rod housing 20 is disposed on the upper surface of the transmission A. As shown in FIG. 2, the housing 20 is provided with a shift rod 21 rotatably in its circumferential direction. Both ends 21a and 21b of the shift rod 21 project from the housing 20 to the outside.

On the other hand, on one side surface of the transmission A, a shift operation cylinder 22 is arranged. The piston rod (not shown) of the cylinder 22 is connected to the end 21 a of the shift rod 21 via the lever 23.

A damper housing 24 is arranged on the other side surface of the transmission A. The damper housing 24 has a damper chamber 25 in the lower portion, the upper portion is located at the end portion of the housing 20 and covers the end portion 21b of the shift rod 21. The damper housing 24 is fastened to the housing 20 with bolts 26.

One end of a lever 27 is inserted into the damper piston 25a of the damper chamber 25, and the other end of the lever 27 is connected to the end 21b of the shift rod 21 by a spline connecting means 28. .

A shift lever 29 is connected to the intermediate portion 21 c of the shift rod 21 by a spline connecting means 30. The tip of the shift lever 29 is engaged with one of the shift jaws B of the transmission A.

The select rod 3 and the shift lever 29 of the shift rod 21 thus arranged are linked to each other by a select lever 31. The select lever 31 is composed of two members, a first lever 31a and a second lever 31b.

On the other hand, an intermediate shaft 32 is rotatably arranged at a position located between the select rod 3 and the shift rod 21 in the housing 20. As shown in FIG. 2, both ends of the intermediate shaft 32 project from the housing 20. At one end of the intermediate shaft 32, a lever mounting portion 32a and a bolt 32b, which are chamfered at opposite portions of the peripheral surface, are formed, and at the other end, the same as the lever mounting portion 32a. The lever mounting portion 32c is formed.

Then, the base end portion of the first lever 31a is fitted to the lever mounting portion 32a, and the nut 33 is screwed into the bolt 32b, so that the base end portion of the first lever 31a is attached to the intermediate shaft 32. It is fixed to. Further, the base end portion of the second lever 31b is fitted to the lever mounting portion 32c, and the engagement portion is welded to fix the base end portion of the second lever 31b to the intermediate shaft 32. There is. The tip of the first lever 31a assembled in this way is inserted into the notch 15 of the striker 13, and the tip of the second lever 31b is inserted into the notch 29a of the shift lever 29.

The transmission operating device described above operates as follows to perform the select operation and the shift operation.

The select operation is performed by selectively supplying compressed air to the pressure chambers 5, 6, 9, 10 of the select operation cylinder 1. For example, when the pressure chamber 10 is opened to the atmosphere and compressed air is supplied to the pressure chamber 5 in the state shown in FIG. 1, the select rod 3 moves to the right in FIG. Since the striker 13 also moves to the right along with the select rod 3, the select lever 31 is rotated clockwise about the intermediate shaft 32 in FIG. When the select lever 31 is operated in this manner, the shift lever 29 on the shift rod 21 is moved to the left in FIG. 3, and one of the shift jaws B is selected.

The shift operation is performed by operating the shift operation cylinder 22. When the cylinder 22 is operated, the shift rod 21 is rotated to one side via the lever 23 engaged with the piston rod (not shown). Therefore, the shift lever 29 engaged with the shift rod 21 and the spline coupling means 30 is also rotated, and the tip of the lever 29 is moved upward or downward in FIG. 2 to shift the shift jaw B. Let

The select operation cylinder 1 and the shift operation cylinder 22 are operated by compressed air, and the compressed air is supplied and discharged via an electromagnetic switching valve.

By the way, in the transmission operating device, when the operation system of the select operation cylinder 1 fails, for example, the electromagnetic switching valve fails, or the compressed air pipe is damaged, the cylinder 1 is operated. It will be difficult.

When a failure occurs in the operation system of the select operation cylinder 1, the lid 17 is removed, the operation tool 19 provided separately is taken out, and the tip of the operation tool 19 is moved from the window 16 of the housing 2 to the housing. 2 and insert the tip into the hole 14 of the striker 13 to lock the operating tool 19 to the striker 13. When the handle 19b is gripped and the operation tool 19 is moved, the striker 13 is moved and the select lever 31 is rotated.

When a failure occurs in the operating system of the shift operating cylinder 22, the damper housing 24 is detached from the shift rod housing 20 and the end 21b of the shift rod 21 exposed by this is rotated. Let

In order to perform such work, the transmission operating device includes an operating tool 34 as shown in FIG. The operating tool 34 has a recess 34a formed at one end and a handle 34b formed at the other end. A spline 34c is formed on the inner peripheral surface of the recess 34a.

The operating tool 34 is used with its spline 34 c fitted to the end 21 b of the shift rod 21.

[0031]

[Effect of device]

 As described above, in the transmission operating device according to the present invention, when a failure occurs in the operating system of the select operating cylinder, the select operating cylinder can be easily operated manually.

[Brief description of drawings]

FIG. 1 is a plan view showing a transmission operating device according to the present invention, particularly a cross section of a select operating cylinder.

FIG. 2 is a II of the transmission operating device according to the present invention in FIG.
It is a II line enlarged sectional view.

FIG. 3 is a II of the transmission operating device according to the present invention in FIG.
It is a sectional view taken along the line I-III.

[Explanation of symbols]

 1 Select Operation Cylinder 2 Select Rod Housing 3 Select Rod 4 Piston 5,6 Pressure Chamber 7,8 Free Piston 9,10 Pressure Chamber 11,12 Atmospheric Pressure Chamber 13 Striker 14 Locking Means (Hole) for Mounting Operation Tool 15 Notch 16 Window 17 Lid 18 Bolt 19 Operating tool 19a Shaft part 19b Handle part 29 Shift lever

Claims (3)

[Scope of utility model registration request] 1. An operating tool mounting locking means is formed on the select rod, and a window is formed in the select rod housing corresponding to a moving range of the locking means, and the operating tool mounting locking means is provided. An operation tool to be engaged is provided, and the operation tool is inserted through the window to be engaged with the operation tool attachment locking means, and the operation tool is moved to move the select rod. Characteristic transmission operating device. 2. The transmission operating device according to claim 1, wherein the operating tool attaching locking means is formed on a striker. 3. The transmission operating device according to claim 1, wherein a mark indicating a select position is provided on a peripheral edge of the window.