JPH0512524Y2 - - Google Patents

Description

[Detailed Description of the Invention] 1. Purpose of the Invention The present invention relates to a dust cover used on rotating shafts of automobiles, machine tools, construction machinery, various industrial machines, and the like.

Conventionally, for example, when installing a dust cover for an automobile drive shaft, two parts of the cover body were bonded together with adhesive. The only way to remove the cover was to remove the entire mechanism, including the cover, and then cut open the cover. Moreover, the same problem exists in other various machines in which complicated and time-consuming work must be performed.

Therefore, it is an object of the present invention to provide an innovative cover that eliminates such drawbacks.

2. Structure of the invention The structure and operation of the invention will be explained with reference to the embodiments shown in the drawings.

First, the embodiments shown in FIGS. 1 to 4 will be described.

Reference numeral 1 denotes a flexible cover body formed in an uneven shape as a whole, and the shape of the uneven surface of this cover body is arbitrary. Moreover, this flexible cover body 1 may be formed in a cylindrical shape. This cover body 1
consists of two halves of the cover 2, 2, which are spirally cut from two opposing points from the upper edge to the lower edge. 2',
2' indicates a joining line between the divided cover halves 2, 2. 3, 3 are reinforcing rib portions formed on the left and right sides of the periphery of each joining line portion 2', 2', and 4, 4 are reinforcing rib portions of each joining line portion 2', 2' of the cover halves 2, 2. A concave portion is provided on one side of the rib portions 3, 3, and a convex portion 5, 5 is provided on the opposite side. Reference numeral 6 denotes an elastic clip that is fitted on the outside of the reinforcing rib portions 3, 3 of the joining line portions 2', 2' at an appropriate interval, and this clip has a bonding force between the recessed portion 4 and the convex portion 5 that are fitted together. further strengthen.

Therefore, when attaching the cover to a predetermined location, after surrounding the joint part of the rotating shaft with the divided cover halves 2, 2, each joining line part 2 of the cover halves 2, 2 is attached. The concave part 4 and the convex part 5 which are opposite to each other ', 2' are connected by fitting and closing, and an elastic clip 6 is hooked from the outside thereof.

Next, another embodiment of the present invention will be described with reference to FIGS. 5 to 7.

7 is a joining line portion 2' of the cover halves 2, 2;
A fastener body installed on the left and right reinforcing rib parts 3, 3 of 2', and each joining line part 2',
2' is for opening and closing.

When attaching the cover to a predetermined location, the two fasteners 7 spirally provided on the cover body 1 are completely opened and the cover halves 2, 2 are attached.
After the cover is divided into two parts, the joint part of the rotating shaft, etc. is surrounded, and the fastener body 7 is closed to join the two cover halves together.

The fastener bodies 7 shown in FIGS. 5 to 7 are examples of rail fasteners, while the fastener bodies 8 shown in FIGS. 8 to 10 are examples of surface fasteners. That is, in this example, the cover body 1
Each joint line portion 2' of the cover halves 2, 2 constituting the
Fasteners are provided on both side surfaces of the left and right protruding flanges 9, 9 of 2', and are opened and closed by these fasteners.

In FIGS. 8 to 10, 10, 10 are screws fixed between the left and right protruding flanges 9, 9 of the fastener body 8, which are used to strengthen the closed joint of the fastener body 8 by the surface fastener. The means for doing so are not only optional, but also may not be provided. Further, a covering portion may be provided at the upper end portion of one of the projecting flange portions 9 to cover the cut line portion 2' having the fastener body 8.

Furthermore, the present invention considers that in order to prevent oil leakage from the closed joint line parts 2', 2' of the cover halves 2, 2, the dust cover of the above structure should be configured with an inner and outer layer. It's good to do that.

In this way, the present invention has a flexible cover body which has an uneven shape as a whole, and is made by cutting spirally from two places from the upper edge to the lower edge.
It is characterized by having divided cover halves and connecting the joint lines of the cover halves so that they can be opened and closed. The installed cover can be easily and quickly removed by opening the joint part along the cut line formed along the uneven surface, making it easy to perform joint work inside the cover and troubleshooting. After the cover has been refilled with grease and grease, it can be immediately replaced with a new cover and installed again. The elasticity and elasticity are not lost at all, and the airtightness can be maintained well.The cover body is symmetrically divided and the left and right sides are very well balanced, so it is especially suitable for high-speed rotating shafts. When used as a cover for a machine, the rotating operation can be carried out smoothly without any trouble during rotation, and its practical effects are extremely large.

[Brief description of the drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall front view, FIG. 2 is an exploded front sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line A-A in FIG. , FIG. 4 is a perspective view of the main parts divided, FIG. 5 is a partially cutaway front view of the whole according to another example, and FIG. 6 is FIG. 5B-
An exploded front sectional view of the B line part, Figure 7 is Figure 5 B-
A cross-sectional view of the B line part, FIG. 8 is a front view of the whole according to another example, FIG. 9 is a front cross-sectional view of the main part in a separated state, and FIG.
The figure is a sectional view taken along the line C--C in FIG. 8.

Claims (1)

[Claims for Utility Model Registration] (1) In a flexible cover body that has an uneven shape as a whole, a cut line that has a spiral shape from the upper edge to the lower edge is cut from two opposing points. A dust cover characterized in that a cover half is formed and divided into two parts, and the joint lines of the cover halves are connected so as to be openable and closed. (2) Each joining line of the cover halves having the helical cut line is provided with a concave part on one side and a convex part on the other side for connection, and an elastic clip is provided on the outer side thereof. The dust cover described in claim (1) of the utility model registration, which is adapted to be fitted with. (3) The dust cover as set forth in claim (1) of the utility model registration, wherein the cover halves having the helical cut line portion are connected by providing fasteners at each joining line portion.