JPH0749807B2 - Embedded solid lubricant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an embedded solid lubricant used for rotary bearings, parallel moving bodies, and the like.

[Prior art and its problems]

Conventionally, as a method of supplying the solid lubricant to the inner surface of the bearing B as shown in FIG. 1 and the surface of the parallel moving body F as shown in FIG. 2, an appropriate through hole H is provided at an appropriate place. , A binder for solidifying a solid lubricant L (for example, molybdenum disulfide, graphite, tungsten disulfide, various additives for improving adhesion and synergism) (for example, epoxy) , Phenol, polyester paraffin, etc.) are mixed and mixed directly into each through hole H and then heated or cured at room temperature to stabilize the shape, and each of them is currently used as an oilless metal. .

However, since the bearing B or the parallel moving body F and the solid lubricant L are integrally closely adhered, adhered, and coupled even if the solid lubricant having such a property is simply buried in the metal, The solid lubricant L itself is often not supplied.

That is, depending on the wear rate of the bearing B and the parallel moving body F, the solid lubricant L simultaneously comes into contact with the opposite surface and is supplied, and the required amount of solid lubricant is not supplied unless the metal is worn. As a result, the exchange of the metal itself was accelerated.

Therefore, the present invention is to provide a means for supplying the solid lubricant to the bearing or the parallel moving body most effectively, and appropriately and automatically incorporating the solid lubricant into the metal inevitably and automatically. Is.

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and an appropriate number of shafts are provided on the lower surface of a solid lubricant, and a octopus-like shape that breaks when a force greater than a certain strength is applied to the shafts. An engaging projection is provided, the engaging projection is arranged in the C-ring-shaped stator, and a stopper facing the engaging projection projecting in the central axis direction of the stator is provided in an upper part of the stator, and The receiving portion for breaking the engaging projection is provided in the lower portion of the stator, and a pressing spring for pressing the engaging projection in the stopper direction is interposed between the solid lubricant and the stator.

〔Example〕

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

FIG. 3 shows an embodiment of a circular type according to the present invention, in which 1 is a solid lubricant, 2 is a C-ring-shaped metal stator as shown in FIG. 6, and 3 is a fixed lubricant. The pressing spring is interposed between the stators 2.

As shown in FIGS. 4 and 5, the structure of the solid lubricant 1 is provided with a shaft portion 4 on the lower surface thereof, and three engaging protrusions 5,
When 5,5 are provided in the shape of octopus, and a force greater than the strength provided in the thin portions 5a, 5a, 5a is applied to the base of each engaging projection 5, 5, 5 in the axial direction. The engaging projections 5, 5, 5 are broken.

Further, the structure of the stator 2 is a C-ring-shaped one as shown in FIGS. 6 and 7, and the engaging projections 5, 5, 5 are formed on the upper part of the inner surface.
Three stoppers 6, 6, 6 protruding in the central axis direction of the stator that engage with, and three engaging projection breakage receiving portions 7, which also project in the central axis direction of the stator at the lower part of the stator, 7,7 are provided.

That is, these stoppers and the receiving portions for breaking the engaging projections are provided like the claws of the bayonet mount used for connecting the camera and the interchangeable lens.

The solid lubricant 1 and the stator 2 are coupled to each other after the spring 3 is attached to the shaft portion 4 and then fitted to the camera of the bayonet mount and the interchangeable lens as in the case of coupling. Push the mating protrusions into the stator and rotate them 60 ° to engage the engaging protrusions 5,5,5 and the stoppers 6,6,6 as shown in FIG.
Engage.

8 and 9 show an example of the case where the embedded solid lubricant according to the present invention is used for the rotary bearing B. The inner diameter of the rotary bearing B is slightly smaller than the outer diameter of the stator 2. Appropriate number of through holes H
The lower part of the stator 2 is fitted into a jig / tool X as shown in FIG. 3 and fitted into the through hole H from the outside.

After that, if the rotating body T is fitted in the direction of the arrow as shown in FIG. 9, the solid lubricant 1 protruding on the inner surface of the rotary bearing B is pushed by a strong force, and the engaging protrusion 5 is for breaking the engaging protrusion. After breaking by hitting the receiving portion 7, the solid lubricant 1 is always in pressure contact with the rotating body T by the force of the spring 3, and the solid lubricant 1 is automatically moved around the rotating body T within the range of the urging force of the spring 3. It is applied to the surface.

In this case, since the engaging projection 5 itself is a lubricant and has a minute shape, even if it remains in the stator 2, there is no adverse effect and the engaging projection 5 is naturally consumed.

FIG. 10 shows the embedded solid lubricant of the above embodiment in which the parallel moving body F is used.
The case where the rotary bearing is mounted on the rotary bearing is the same as that of the rotary bearing described above.

11 and 12 show different embodiments of the present invention in which the solid lubricant has a rectangular shape.

In this case, the two shaft parts 12, 12 are provided on the lower surfaces of both sides of the solid lubricant 11.
And engaging protrusions similar to those in the above-mentioned embodiment, which are fixed to the stators 2 and 2, and the stators 2 and 2 are provided in the groove F ″ formed in the parallel moving body F ′. It is fitted in the through holes H, H.

Attachment of the stators 2, 2 is carried out with the same capacity as in the above-mentioned embodiment.

〔The invention's effect〕

Since the embedded solid lubricant according to the present invention is always applied with a pressing force by the spring 3 after being set, there is no supply failure unlike the conventional method.

[Brief description of drawings]

Fig. 1 is a perspective view of the currently used bearing metal, and Fig. 2
FIG. 3 is a perspective view of a sliding metal currently used, FIG. 3 is a partially cut front view of an embodiment of the present invention, and FIG. 4 is a partially cut front view of a solid lubricant of the embodiment of FIG. FIG. 5 is a bottom view thereof, FIG. 6 is a plan view of the stator of the embodiment of FIG. 3, FIG. 7 is a sectional view taken along the line AA, and FIG. FIG. 9 is a view showing a state where the agent is attached to the rotary bearing, FIG. 9 is a vertical sectional side view showing a state when the shaft is inserted into the rotary bearing,
FIG. 10 is a sectional view showing a state in which the embedded solid lubricant according to the present invention is attached to a parallel moving body, FIG. 11 is a plan view of a different embodiment, and FIG. 12 is a longitudinal side view thereof. 1 ... Solid lubricant 2 ... Stator 3 ... Resilient spring 4 ... Shaft 5 ... Engagement protrusion 6 ... Stopper 7 ... Engagement protrusion breakage receiving part

Claims (3)

[Claims] 1. An appropriate number of shafts are provided on the lower surface of a solid lubricant, and an appropriate number of engaging projections that break when a force greater than a certain strength is applied to the shafts are provided in a octopus shape. The engaging protrusion is arranged in the C-ring-shaped stator, and a stopper that engages with the upper part of the engaging protrusion protruding in the central axis direction of the stator is provided in the upper part of the stator, and in the lower part of the stator. The embedded solid lubricant, wherein the engaging projection breakage receiving portion is provided, and a pressing spring for pressing the engaging projection in the stopper direction is interposed between the solid lubricant and the stator. 2. The embedded solid lubricant according to claim 1, wherein each of the solid lubricant and the stator has a circular shape. 3. The embedded solid lubricant according to claim 1, wherein the solid lubricant has a plate shape.