JPH02176216A - Reciprocating motion mechanism - Google Patents

Abstract

PURPOSE:To make a moving section light in weight, and thereby make it possible to move it at high speeds as well as to eliminate frequent lubrication by holding an amount of lubricant as required in an oil basin moving together with the moving section, and thereby providing a relay means of lubricant between an oil tank separated apart from the oil basin and the oil basin. CONSTITUTION:When a photo card 11 is not inserted, a card resting table 17 is in a position shown by a dotted line, each oil receiving end 23a and 23b comes in contact with each oil feeding end 27a and 27b mutually at each inclined surface so that lubricant within an oil tank 26 is moved so as to be supplied to an oil ring 24. When the photo card 11 is inserted into an insertion hole 12, the photo card 11 is rested on the resting table 17, the resting table 17 is linearly moved along a main shaft 15 by driving a motor 21. The position where each oil receiving end 23a and 23b abuts against each oil feeding end 27a and 27b, is different in height between the side of (a) and the side of (b), reciprocating motion of the resting table 17 is not thereby hindered at all. After the photo card 11 has processed specified recording and the like, the resting table 17 is carried to the position shown by a dotted line, then the photo card 11 is ejected from the inserting hole 12, lubricant is thereby supplied again.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reciprocating interlocking mechanism that automatically replenishes lubricating oil to an oil ring of a sliding bearing.

[Conventional technology] Conventionally, in bearing mechanisms that use lubricating oil, a certain amount of lubricating oil is soaked into a felt material, a sponge, etc., and the lubricating oil is applied according to the amount of oil used, or a margin is set in the amount used. It is common practice to build a large oil reservoir in anticipation of this and avoid replenishing oil from outside.

FIG. 5 shows a cross-sectional view of a conventionally used sliding bearing.A sliding bearing 2 is slidably mounted around the main shaft l, and a housing 3 surrounding the outer periphery of the bearing 2 is provided around the sliding bearing. A cylindrical hollow portion surrounded by the bearing 2 and the housing 3 is filled with felt material to form an oil ring 4 serving as an oil reservoir.

In this configuration, the lubricating oil injected into the oil ring 4 is supplied to the sliding bearing 2 and forms an oil film necessary for lubrication between it and the main shaft l. Therefore, in this conventional method, in order to secure the required amount of lubricating oil, it is necessary to replenish the lubricating oil each time depending on the amount used, or to prepare a large-capacity oil reservoir if replenishment is difficult. .

However, when a large-capacity oil reservoir is used, the mass of the entire reciprocating part increases, which increases vibration during reversal and impedes high-speed operation, making replenishment difficult and requiring stable high-speed operation. In such cases, this is not an appropriate method for replenishing lubricating oil.

[Object of the Invention] An object of the present invention is to provide a reciprocating interlocking mechanism that is capable of stable high-speed operation and that does not require frequent manual replenishment of lubricating oil.

[Summary of the invention] The gist of the present invention is to achieve the above objects.

In a reciprocating pressure mechanism in which the moving part slides against the main shaft,
An oil reservoir that moves together with the moving part and a fixed oil tank that contains lubricating oil separated from the moving part.

This is a reciprocating mechanism characterized by providing a relay means for replenishing lubricating oil.

[Embodiments of the Invention] The present invention will be explained in detail based on embodiments of the optical card recording/reproducing apparatus shown in FIGS. 1 to 4.

FIG. 1 is a block diagram showing a first embodiment, in which an optical card 1
Inside the casing 13 in which the first insertion port 12 is provided, a main shaft 15 is horizontally installed by fixing members 14 on both sides. This main shaft 15 has two substantially symmetrical bearing portions 16a.
, 16b is slidably attached to the card mounting table 17 supported by the drive belt 18.
The drive belt 18 is driven by a drive motor 21 via pulleys 19 and 20.

In the bearing portion 16a, as shown in FIG.
The card mounting table 1 is mounted on a sliding bearing 22 that is slidably fitted to the card mounting table 1.
7 is attached to the main shaft 15, and as shown in FIG. , and is further surrounded by a ring cap 25 and pressed against the end of the sliding bearing 22.

Furthermore, although the structure is symmetrical with the other bearing part 16bt=s bearing part 16a, the height of the oil receiver ends 23a, 23b protruding to one side is lower than that of the left oil receiver end 22a. It has become. An oil tank 26 containing lubricating oil is provided near the inside of the insertion slot 12, and oil supply ends 27a and 27b made of felt material protrude from the f section of the oil tank 26. When these oil supply ends 27a, 27b are close to the insertion port 12 and in the position shown by the dotted line,
are arranged so as to be in contact with the oil receiving vessel ends 23a and 23b, respectively. Note that the tip ends of the oil receiving ends 23a and 23b are both sloped surfaces that are inclined toward the insertion port 12, and the tips of the oil supply ends 27a and 27b are also the same as the oil receiving ends 23a and 23b.
23b is formed as a corresponding inclined surface in order to ensure contact and increase the contact area. Further, an optical head 28 for recording and reproducing information on the optical card 11 is disposed inside the housing 13, and the distance between the optical card 11 placed on the card mounting table 17 and the optical card 11 is set to an appropriate size for scanning.

In the above configuration, when the optical card 11 is not inserted, the card mounting table 17 moves toward the insertion slot 12 as shown by the dotted line. At this time, the oil receiving vessel end 23a,
Since the inclined surfaces of 23b are in contact with the oil supply ends 27a and 27b, the lubricating oil inside the oil tank 26 is transferred to the oil supply end 23b.
The oil is replenished and supplied to the oil rings 24, which serve as respective oil reservoirs, through the oil receiving vessel ends 23a and 23b.

When the optical card 11 is inserted from the insertion slot 12, the optical card 1
1 is card 4! ! It is placed a on the placing stand 17.

Here, the drive motor 21 rotates, and the card placement table 17 is linearly pushed along the main shaft 15 via the pulleys 19, 20 and the drive belt 18. At this time.

Since there is an appropriate height difference between the contact positions of the oil receiving ends 23a, 23b and the oil supply ends 27a, 27b near and far from the insertion port 12, the reciprocating movement of the card mounting table 17 is prevented. will not be hindered.

The card mounting table 17 linearly moves back and forth along the main shaft 15, and during this process, the optical head 28 optically records and reproduces information on the optical card 11. When the recording and reproduction are completed,
Card 1! The placing stand 17 is conveyed to the insertion slot 12 side, and the optical card 11 is ejected from the insertion slot 12. At this time, the oil receiving vessel end 23a again.

23b and the oil supply ends 27a, 27b come into contact with each other, and lubricating oil is supplied.

Figure 4 shows oil receiving starting ends 29a, 29b and oil supplying ends 30a, 3.
A second embodiment is shown in which the shape of 0b is different from the first embodiment; The tip part is a hollow thin nozzle facing in the horizontal direction, and a height difference corresponding to the oil receiving starting ends 29a and 29b is provided.

In this configuration, when the card mounting table 17 reaches a position close to the insertion slot 12 shown by the dotted line, the oil supply ends 30a, 3
Oil receiving starting end 2 where the tip of 0b is made of felt material.
9a, 29b, and at this time, the lubricating oil in the oil tank 26 passes through the oil receiving starting ends 23a, 23b.
Each oil ring 24 will be replenished.

[Effects of the Invention] As explained above, the reciprocating interlocking mechanism according to the present invention is stable because the oil reservoir that moves together with the moving part retains only the necessary amount of lubricating oil, which reduces the mass of the entire moving part. High-speed operation is possible.

Furthermore, the lubricating oil relay means provided between the oil sump that moves together with the moving part and the oil tank separated from the moving part allows the lubricating oil in the oil tank to be replenished to the oil sump as needed, so there is no need for frequent manual lubrication. becomes unnecessary.

[Brief explanation of the drawing]

Drawings 1 to 4 show an embodiment of an optical card recording/reproducing device with a reciprocating interlocking mechanism according to the present invention, FIG. 1 is a configuration diagram of the first embodiment, and FIG. 2 is a sectional view of a bearing part. , FIG. 13 is an exploded view of the main parts of the bearing part, and FIG. 4 is a configuration diagram of the second embodiment.
FIG. 5 is a sectional view of a conventional bearing section. 11 is an optical card, 15 is a main shaft, 16a, 16b are bearings, 17 is a card mounting table, 22 is a sliding bearing, 23a,
23b, 29a, 29b are oil receiving starting ends, 24 is an oil ring, and 26 is an oil tank. 27a, 27b, 30a, and 30b are oil supply ends, and 28 is an optical head.

Claims (1)

[Claims] 1. In a reciprocating mechanism in which a moving part slides with respect to a main shaft, a relay means for replenishing lubricating oil between an oil reservoir that moves together with the moving part and a fixed oil tank that is separated from the moving part and contains lubricating oil. A reciprocating mechanism characterized by being provided with.