JPH08163756A - Sliding contactor - Google Patents

Abstract

PURPOSE: To supply lubricant to the sliding planes of a male contactor and a female contactor by a method wherein a lubricant supplier is provided to the sliding part between the male contactor and the female contactor and the lubricant is supplied and recovered through a lubricant holding trench following the expansion and contraction of the male contactor. CONSTITUTION: A lubricant supplier 50 is supported and fixed by a supporter 14 and provided on the outer circumference of a male contactor 1. The lubricant supplier 50 is composed of a ring unit 60 which has a lubricant holding trench 61 in its inner circumference and has a lubricant entrance 63 in its side wall 62 and whose side wall 64 is closed and has its tip inner circumference 65 which slides on the outer circumference of the male contactor 1. Therefore, following the expansion and contraction of the male contactor 1, lubricant 80 stored in the lubricant holding trench 61 is applied to the outer circumference of the male contactor 1 through the lubricant entrance 63. The applied lubricant 80 is again recovered into the lubricant holding trench 61. With this constitution, the lubricant can be supplied to the sliding planes of the male contactor 1 and a female contactor 2 over a long term.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved sliding contact, and more particularly to an improved sliding contact having a lubricant supply device.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a sliding contact in which a male contact and a female contact are slidably fitted. The one shown in FIG. 7 is the center of a so-called pipeline air cable in which the center conductors A and B are supported by a spacer (not shown) in a sheath (not shown) and an insulating gas is sealed in the sheath. It is an example of a sliding contact of a conductor.

In the figure, A and B are the center conductors of the conduit air cable, 1 is a male contactor attached to the tip of the center conductor A, and 2 is a female contactor attached to the tip of the center conductor B. A large number of the female contacts 2 are arranged in the circumferential direction of the central conductor B. 3 is a corona shield body that covers the outer circumferences of the male contactor 1 and the female contactor 2, and 4 is the female contactor 2.
Is a spring that is arranged on the back surface of the female contact element 2 and presses the female contact element 2 toward the male contact element 1 side. Reference numeral 5 is a guide rod attached to the tip of the center conductor B and fitted to the inner peripheral surface of the male contact 1.

In the sliding contact having the above structure, when the center conductor thermally expands and contracts, the male contactor 1 slides in the female contactor 2 to absorb the thermal expansion and contraction of the center conductor. Male contact 1 is female contact 2
It can move within the range of H.

When the male contactor 1 slides in the female contactor 2, abrasion occurs between the two. For this reason, conventionally, a lubricant such as grease is applied between the male contactor 1 and the female contactor 2.

[0006] However, there is a problem in that, if grease is simply applied once, the grease will flow down during long-term use and the lubrication effect will be lost.

Therefore, as described in Japanese Utility Model Laid-Open No. 60-99778, a space portion (see reference numeral 7 in FIG. 7) in the female contactor 2 has an oil-tight structure and is filled with grease. It has been devised that the sliding surfaces of the male contactor 1 and the female contactor 2 are always immersed in grease.

[0008]

However, the above structure is troublesome because the space inside the female contactor 2 has to have an oil-tight structure, and is long (30 to 50 years).
There was a problem that it was difficult to maintain an oil-tight structure. That is, in order to make an oil-tight structure, packing is used to maintain the oil-tightness, but it is difficult to maintain the oil-tight structure for a long period of time due to problems such as the life of the packing. is there.

[0009]

DISCLOSURE OF THE INVENTION The present invention provides a sliding contact that solves the above-mentioned problems, and has a structure in which a male contact and a female contact are slidably fitted. In the sliding contact, a lubricant supply device is arranged at a sliding portion of the male contact and the female contact, and the lubricant supply device has a lubricant retaining groove formed on an inner peripheral surface thereof. And a ring body formed so that a lubricant inlet / outlet is provided on the tip inner peripheral surface of one side wall and the other side wall is closed so that the tip inner peripheral surface slides on the outer periphery of the male contact. The lubricant is contained in the lubricant holding groove (claim 1).

Further, in a sliding contact in which a male contact and a female contact are slidably fitted, a lubricant supply device is provided at a sliding portion of the male contact and the female contact. I have placed it,
In this lubricant supply device, a lubricant retaining groove is formed on the inner peripheral surface, a lubricant inlet / outlet is provided on the tip inner peripheral surface of one side wall, and the other side wall is closed so that the inner peripheral surface of the tip is male. A ring body which is formed so as to slide on the outer circumference of the mold contact and is divided in the circumferential direction, a tightening member which is arranged on the outer circumference of the ring body and tightens the ring body, and the inside of the lubricant holding groove. It is characterized by comprising a stored lubricant.

[0011]

In the lubricant supply device, the lubricant retaining groove is formed on the inner peripheral surface, the lubricant inlet / outlet is provided on the tip inner peripheral surface of one side wall, and the other side wall is closed to form the tip inner peripheral surface. If the ring body is formed so as to slide on the outer periphery of the male contactor and the lubricant contained in the lubricant retaining groove is used, the lubricant retaining groove expands as the male contact expands and contracts. The lubricant contained therein is applied to the outer periphery of the male contactor through the lubricant inlet / outlet, and the lubricant thus applied is again housed in the lubricant holding groove. That is, when the male contact contracts, for example, by a method of moving away from the position of the lubricant inlet / outlet on one side wall, the lubricant flows out from the lubricant inlet / outlet and is applied to the surface of the male contactor, while the male contact When the child extends to the side wall of the other side, the other side wall is closed and the inner peripheral surface of the tip is formed so as to slide on the outer circumference of the male contactor. The applied lubricant is collected again in the lubricant holding groove.

Further, by using a divided ring body as the lubricant supply device, and disposing a tightening member for tightening the ring body on the outer periphery of the divided ring body,
Since the elasticity of the ring body can be easily adjusted by the tightening force of the tightening member, the ring body easily expands and contracts in the radial direction, which causes the lubricant to flow out from the lubricant holding groove and to re-install the lubricant. It becomes easier to collect in the lubricant holding groove.

[0013]

Embodiments of the present invention will be described below. FIG. 1 is an explanatory view showing an embodiment of a sliding contact according to the present invention. 1 is an enlarged view of a part of the sliding contactor shown in FIG. 7, and the same parts as those in FIG. 7 are denoted by the same reference numerals.

This sliding contact is the same as the conventional one in that the male contact 1 and the female contact 2 slide, but the sliding of the male contact 1 and the female contact 2 is the same. Lubricant supply device 5 for moving part
The feature is that 0 is arranged. The lubricant supply device 50 in the embodiment is supported and fixed to the support device 14 fixed to the inner peripheral surface of the female contactor 2 with the pin 12, and is arranged on the inner peripheral portion of the female contactor 2.

The lubricant supply device 50 includes a ring body 60.
And a tightening member 70 and a lubricant 80.

The ring body 60 is made of an elastic material such as rubber and has a concave cross section, and has a structure as shown in FIGS. That is, the lubricant retaining groove 6 is formed on the inner peripheral surface.
1 is formed, and the lubricant inlet / outlet 63 is provided on the tip inner peripheral surface of one side wall 62, and the other side wall 64 is closed so that the tip inner peripheral surface 65 covers the outer periphery of the male contact 1. It is formed so as to slide, and is divided into three in the circumferential direction. A large number of lubricant inlets / outlets 63 provided on the inner peripheral surface of the tip of the one side wall 62 are provided in the circumferential direction. Further, the divided surface of the ring body is cut obliquely. 67
Indicates the cut surface.

As shown in FIG. 1, a fastening member 70 is arranged on the outer periphery of the ring body 60 divided into three parts, and the ring body 60 divided into three parts is fastened. As the tightening member 70, a coil spring or a rubber-like elastic member can be used.

Further, as shown in FIG. 1, a lubricant 80 such as grease is stored in the lubricant holding groove 61 of the ring body 60.

As shown in FIG. 1, the lubricant supply device 50 having the above-described structure is supported and fixed to the support device 14 and is attached to the male contact 1.
It is arranged on the outer periphery of the. At this time, for example, the one side wall 62 provided with the lubricant inlet / outlet 63 is arranged so as to be located on the left side.

When the male contactor 1 moves in the X direction in such a state, the lubricant 80 flows out from the lubricant inlet / outlet 63 by the movement of the male contactor 1, whereby the male contactor 1 moves. Lubricant 80 is applied to the outer peripheral surface. Therefore, since the lubricant is interposed on the contact surface with the female contactor 2, it is possible to effectively prevent abrasion and the like between them. On the other hand, when the male contactor 1 moves in the Y direction, the lubricant 80 applied to the outer peripheral surface of the male contactor 1 is wiped off by the other side wall 64, so that the lubricant 80 flows through the lubricant inlet / outlet 63. It passes through and is stored in the lubricant holding groove 61.

In the lubricant supply device 50 of the above embodiment, since the ring body 60 is divided and is tightened by the tightening member 70, the elasticity of the ring body can be easily adjusted by the tightening force of the tightening member. Can be adjusted. For this reason, the ring body easily expands and contracts in the radial direction, and it becomes easy to let the lubricant flow out from the lubricant holding groove and to collect the lubricant again in the lubricant holding groove. Further, since the cut surface 67 of the ring body 60 is cut obliquely, the lubricant 80 is prevented from flowing out of the ring body 60 when the lubricant 80 is stored in the lubricant holding groove 61. be able to.

As described above, in the present invention, the lubricant 80 moves in and out of the lubricant holding groove 61 in accordance with the expansion and contraction of the male contact 1, so that the male contact 1 and the female contact 2 slide. The lubricant 80 can be supplied to the moving surface.

FIG. 6 shows another embodiment of the ring body 60 used in the present invention. This ring body 60 is different from that of the previous embodiment in that it is not divided and no tightening member is required. Other points, that is, a point formed of an elastic body such as rubber, and a lubricant holding groove 61 on the inner peripheral surface
Is formed, a lubricant inlet / outlet 63 is provided on the inner peripheral surface of the tip of one side wall 62, and the other side wall 6 is formed.
4 is closed, and the inner peripheral surface 65 at the tip thereof is formed so as to slide on the outer periphery of the male contactor 1, which is the same as in the previous embodiment.

The use of the ring body as described above has an advantage that the structure of the lubricant supply device is simplified because no tightening member is required.

A fastening member may be arranged on the outer periphery of the ring body which is not divided, and the ring body which is not divided and the fastening member may be combined.
Further, the position at which the lubricant supply device is attached to the sliding parts of the male contactor and the female contactor is not particularly limited, and the lubricant can be supplied to the sliding surfaces of the male contactor and the female contactor. Any position will do. Further, in the above embodiment, the case where the present invention is applied to the sliding contactor of the pipeline air cable is described, but the present invention is a sliding contact in which the male contactor and the female contactor slide. It can be widely used for children.

[0026]

As described above, in the sliding contact according to the present invention, the lubricant retaining groove is formed on the inner peripheral surface, the lubricant inlet / outlet is provided on the inner peripheral surface at the tip of one side wall, and the other side is provided. A lubricant supply device including a ring body having a closed side wall and a tip inner peripheral surface formed to slide on the outer periphery of the male contactor, and a lubricant contained in the lubricant retaining groove. Are arranged on the outer periphery of the male contactor, the lubricant 80 moves in and out of the lubricant holding groove 61 in accordance with the expansion and contraction of the male contactor 1, whereby the male contactor 1 and the female contactor 2 are separated. The lubricant 80 can be supplied to the sliding surface. Therefore, the lubricant can be supplied to the sliding surface between the male contactor and the female contactor for a long period of time. Moreover, the structure is simple and inexpensive.

Further, by using the divided ring body and disposing the tightening member for tightening the ring body on the outer periphery of the divided ring body, the elasticity of the ring body is easily adjusted by the tightening force of the tightening member. As a result, the ring body easily expands and contracts in the radial direction, which makes it easier for the lubricant to flow out of the lubricant holding groove and to collect the lubricant again in the lubricant holding groove.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of a sliding contact of the present invention.

FIG. 2 is a half-cutaway front view showing an embodiment of a ring body used in the present invention.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a right side view of FIG. 2;

FIG. 5 is a plan view of FIG. 2;

FIG. 6 is a half cutaway plan view showing another embodiment of the ring body used in the present invention.

FIG. 7 is a half-cutaway front view showing an example of a sliding contact.

[Explanation of symbols]

 1 Male contactor 2 Female contactor 50 Lubricant supply device 60 Ring body 61 Lubricant retaining groove 70 Tightening member 80 Lubricant 62 One side wall 63 Lubricant inlet / outlet 64 Other side wall 65 of ring body Other side of ring body Side tip inner peripheral surface 67 Cut surface of ring body

Claims (2)

[Claims] 1. In a sliding contact in which a male contact and a female contact are slidably fitted, a lubricant supply device is provided at a sliding portion of the male contact and the female contact. The lubricant supply device has a lubricant retaining groove formed on the inner peripheral surface thereof, and a lubricant inlet / outlet is provided on the inner peripheral surface of the tip of one of the side walls, and the other side wall is closed so that the tip thereof is closed. A ring body whose inner peripheral surface is formed to slide on the outer periphery of the male contactor,
A sliding contact, comprising a lubricant housed in the lubricant holding groove. 2. A sliding contact member in which a male contact member and a female contact member are slidably fitted, and a lubricant supply device is provided at a sliding portion of the male contact member and the female contact member. The lubricant supply device has a lubricant retaining groove formed on the inner peripheral surface thereof, and a lubricant inlet / outlet is provided on the inner peripheral surface of the tip of one of the side walls, and the other side wall is closed so that the tip thereof is closed. A ring body whose inner peripheral surface is formed so as to slide on the outer periphery of the male contactor, and which is divided in the circumferential direction; a tightening member arranged on the outer circumference of the ring body for tightening the ring body; A sliding contact comprising a lubricant contained in a material holding groove.