JPS6338097Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power transmission device for an industrial vehicle.

In this type of conventional power transmission device, open the top cover a of the transmission case h, align the opening i of the snap spring d provided in the snap spring groove of the boss of gear g with the notch j of the boss of gear g, By pulling out the shaft b in the direction of the arrow, it is inserted from the notch j through the pin c provided on the shaft b,
The clutch disk e and clutch cover f had to be removed.

That is, in order to pull out the shaft b in the direction of the arrow, the work of removing the clutch disc e and the clutch cover f is done from the transmission case h.
It was divided into two places inside the clutch case.

However, in this case, the upper cover a of the mission case h must be removed, and by removing the upper cover a, it is necessary to prevent foreign matter from entering, which is a time-consuming process.

The present invention was developed in view of the above-mentioned problems, and its purpose is to enable the clutch to be replaced entirely within the clutch case, and to fix the driveshaft to the output shaft using only two pins and a snap spring. It is an object of the present invention to provide a power transmission device for an industrial vehicle in which the component parts are inexpensive, the structure is simple, and the axial fixation of the drive shaft is ensured.

Hereinafter, the present invention will be explained with reference to FIG. 4 and subsequent figures.

In the drawings, 1 is a transmission case, and 2 is a clutch case.

An opening 4 is formed in the wall 3 of the mission case 1, and a support member 5 is fitted into the opening 4. An output shaft 7 is connected to the support member 5 via a bearing 6.
is supported.

A spline hole 8 is formed in the output shaft 7, and a drive shaft 9 is inserted into the spline hole 8.
The spline portions 10 of the two are engaged with each other. An insertion hole 11 is formed in the output shaft 7, and a snap ring groove 12 is formed in the output shaft 7 so as to intersect with the insertion hole 11.

A pin 13 is inserted into the insertion hole 11, and left and right notches 14 are provided at the outer ends of the pin 13.
is formed. Further, a snap ring 15 is fitted into the snap ring groove 12, and both ends 16 of this snap ring 15 are connected to the notch 14 of the pin 13.
This prevents the pin 13 from falling off.

The upper part of the support member 5 is open.

Therefore, when replacing the clutch, open the snap spring 15 to the left and right as shown in FIG.
from the insertion hole 11. This allows the drive shaft 9 to move freely in the axial direction, so the clutch can be replaced by moving the drive shaft 9 using a screwdriver 17 or the like.

As described in detail above, the present invention includes fitting the support member 5 into the opening 4 of the wall 3 of the transmission case 1 between the transmission case 1 and the clutch case 2,
In a power transmission device for a working vehicle in which an output shaft 7 of a transmission is rotatably supported on a support member 5, a spline hole 8 is provided in the output shaft 7, and an end of a drive shaft 9 is spline-coupled to the spline hole 8. An insertion hole 11 is provided in the radial direction in the portion of the output shaft 7 that protrudes into the clutch case 2, and a snap ring groove 12 is provided in the outer circumference of the output shaft 7 to intersect with the insertion 11. Insert the pin 13 that removably engages with the snap spring 1 into the snap spring groove 12.
5 is fitted, and the pin 13 is held down by both ends of the snap spring 15.

Therefore, by opening both ends of the snap spring 15 and removing the pin 13, the drive shaft 9 can be moved in the axial direction with respect to the output shaft 7, making it possible to replace the clutch. The work of opening the clutch case to remove the pin 13 and the work of moving the drive shaft in the axial direction can be done inside the clutch case 2, making it possible to replace the clutch all within the clutch case. The shaft 7 is fixed to the shaft 7 at two points, the pin 13 and the snap spring 15, and its components are inexpensive, the structure is simple, and the drive shaft 9 can be securely fixed in the axial direction.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of a conventional power transmission device for industrial vehicles, Fig. 2 is a perspective view of the part shown in Fig. 1, Fig. 3 is an explanatory diagram of the relationship between pins and snap springs, and Fig. 4 is an embodiment of the present invention. Fig. 5 is an enlarged view of the part in Fig. 4, Fig. 6 is a view taken from the direction of Fig. 5, Fig. 7 is a perspective view of the main parts of the present invention, and Fig. 8 is an illustration of the pin. The perspective view and FIG. 9 are explanatory diagrams of how the pin is pulled out when replacing the clutch. 5 is a support member, 7 is an output shaft, 8 is a spline hole, 9 is a drive shaft, 11 is an insertion hole, 12
is the snap spring groove, 13 is the pin, and 15 is the snap spring.

Claims (1)

[Claims for Utility Model Registration] A support member 5 is fitted into the opening 4 of the wall 3 of the transmission case 1 between the transmission case 1 and the clutch case 2, and the transmission is output to the support member 5. In a power transmission device for a work vehicle in which a shaft 7 is rotatably supported, a spline hole 8 is provided in the output shaft 7, an end of a drive shaft 9 is spline-coupled to the spline hole 8, and the output shaft 7 is inserted into the clutch case 2. An insertion hole 11 is provided in the radial direction in a portion protruding from the output shaft 7, and a snap ring groove 12 is provided on the outer circumference of the output shaft 7 to intersect with the insertion hole 11, and the snap ring groove 12 is removably engaged with the drive shaft 9 within the insertion hole 11. A power transmission device for an industrial vehicle, characterized in that a pin 13 is inserted, a snap spring 15 is fitted into a snap ring groove 12, and the pin 13 is pressed by both ends of the snap spring 15.