JPH0343081B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an axle structure for an automobile.

(b) Conventional technology For example, the first axle structure of a conventional automobile
There is something like the one shown in the figure. A hub 2 is rotatably supported on a knuckle spindle 1 via a bearing 3. An oil seal 4 is provided between the knuckle spindle 1 and the hub 2 to prevent grease from the bearing 3 from leaking to the outside. A buffle plate 6 of a brake device is attached to the knuckle spindle 1 by bolts 5, and the buffle plate 6 is in surface contact with the flat surface 1a of the knuckle spindle 1. A dust seal 6a that contacts the outer circumference of the hub 2 is integrally attached to the inner circumference of the buff-full plate 6. On the flat surface 1a of the nutkl spindle 1,
A groove 1b is provided to allow a chamber 7 defined by the oil seal 4, the nutcle spindle 1, and the baffle plate 6 to communicate with the outside. bearing 3
When surrounding grease passes through the oil seal 4 and leaks, the grease flows out through the groove 1b to the outside of the back side of the buff-full plate 6, thereby preventing any hindrance to the operation of the brake device.

(C) Problems to be Solved by the Invention However, in the conventional automobile axle structure as described above, the groove 1b was provided on the flat surface 1a of the nutkl spindle 1, so this groove was not machined. The problem was that it required equipment and man-hours to process and was expensive.

(d) Means for Solving the Problems The present invention has been made by focusing on the above-mentioned problems in conventional automobile axle structures, and by providing grooves on the buttful plate side by press molding, The aim is to resolve the above issues. That is, in the present invention, the seal support member 17 is attached by bringing the buff full plate 16 into close contact with the flat surface 11a of the knuckle spindle 11 and overlapping the buff full plate. shaft part 1
This is based on an automobile axle structure in which a dust seal 17a is provided to seal between the dust seal 17a and the hub 12 rotatably supported by the buttful plate. A hole 16b is provided at the side position, and a groove 17b extending from the inner peripheral portion to the hole position of the buff-full plate is provided in the seal support member by press molding. Note that reference numerals in parentheses indicate corresponding ones in the embodiments described later.

(E) Embodiments Hereinafter, the present invention will be explained based on FIGS. 2 to 7 of the accompanying drawings showing embodiments thereof.

First, the configuration will be explained.

The hub 1 is attached to the shaft portion 11b of the nutkl spindle 11.
2 is rotatably supported via a bearing 13. An oil seal 14 is provided between the knuckle spindle 11 and the hub 12 to prevent grease from the bearing 13 from leaking to the outside. Bolt 15 is attached to the nutkl spindle 11.
The baffle plate 16 and the seal support member 17 are fastened together by the baffle plate 1.
6 is in close contact with the flat surface 11a of the knuckle spindle 11. A dust seal 1 is provided on the inner circumference of the seal support member 17 and contacts the outer circumference of the hub 12.
7a is attached integrally. Seal support member 1
As shown in FIGS. 3 and 4, grooves 17b extending in the radial direction are provided in the groove 7 by press molding. Further, as shown in FIGS. 5 and 6, in addition to the mounting hole 16a to the nutcle spindle 11, the baffle plate 16 has a grease discharge hole 1.
6b is provided. This hole 16b is provided at a position corresponding to the outer peripheral side position of the groove 17b of the seal support member 17. Note that the two holes 16b are provided at symmetrical positions in the double full plate 16.
This is to reverse the direction and use it for both the right and left axles. A chamber 18 partitioned by the seal support member 17, the nutcle spindle 11, the oil seal 14, and the buff-full plate 16 has a groove 17b.
and communicates with the outside through the hole 16b.

Next, the effect will be explained.

Grease from bearing 13 is applied to oil seal 14
If the grease leaks into the chamber 18 through the groove 17b and the hole 16b, this grease flows out to the outside through the groove 17b and the hole 16b. Further, even when water enters the chamber 18 from the outside through the dust seal 17a of the seal support member 17, the water flows out through the groove 17b and the hole 16b. Since the groove 17b of the seal support member 17 and the hole 16b of the buttful plate 16 can be formed by press working, the machining process is much easier compared to the conventional case where they are formed by machining on the knuckle spindle. Costs are significantly reduced. Furthermore, since the double plate 16 and the seal member 17 are separated into separate members, the same material can be used for the left and right axles (i.e.,
For left-hand and right-hand use, the relative positions of the full plate 16 and the seal support member 17 may be rotated by 180°), eliminating the need to manufacture dedicated left and right parts.

FIG. 7 shows a second embodiment of the invention. In this embodiment, the dust seal 17a' is brought into contact with the thrust surface of the hub 12, and the other configurations are the same as the embodiment shown in FIG.
It is clear that the same operation and effect as in the first embodiment can also be obtained with such a configuration.

(F) Effects of the Invention As described above, according to the present invention, the hole is provided at a position on the outer circumference side of the part of the buttful plate that is in close contact with the flat surface of the nutcle spindle, and the seal support member is provided with a hole on the inner circumference side. Since the groove extending from the part to the position of the hole in the buttful plate is provided by press molding, processing becomes easy and the price can be reduced.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a conventional automobile axle structure, FIG. 2 is a diagram showing an automobile axle structure according to the present invention, FIG. 3 is a front view of a seal support member according to the present invention, and FIG. 5 is a front view of the buff full plate according to the present invention, FIG. 6 is a sectional view of the buff full plate shown in FIG. 5, taken along the line -, and FIG. FIG. 2 is a diagram showing an axle structure for an automobile, which is a second embodiment of the present invention. 11...Natsukuru spindle, 12...Hub,
13...Bearing, 14...Oil seal, 1
5...Bolt, 16...Batsuful plate, 16
b... Hole, 17... Seal support member, 17a...
Dust seal, 17b...groove.

Claims (1)

[Claims] 1. A buttful plate is brought into close contact with the flat surface of the knuckle spindle, and a seal support member is attached so as to overlap the buttful plate. In an automobile axle structure that is equipped with a dust seal that seals between the rotatably supported hub and the rotatably supported hub, a hole is provided at a position on the outer periphery of the part of the buttful plate that is in close contact with the flat surface of the nutsuru spindle to support the seal. An automobile axle structure characterized in that the member is press-molded with a groove extending from the inner circumference to the position of the hole in the buttful plate.