JP3165840U - Slip ring mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slip ring mechanism for power supply used in a rotary lighting device or the like, in which the structures of rings, terminals, brushes and the like are improved, and the slip ring mechanism can be configured inexpensively, compactly and with low power consumption. SOLUTION: In a rotating device provided with a slip ring and a brush that slides into contact with the slip ring to electrically conduct electricity with the slip ring side, a conductive rotating shaft 105 and conductive pipes 102a and 102b are arranged from the center in the radial direction. Arrange concentrically. Further, the insulator 104 and the conductive pipe are repeatedly arranged concentrically on the outer circumference of the conductive pipe according to the required number of conductive paths. Further, the smaller the diameter of the conductive pipe, the longer both sides are exposed in the axial direction, and the portion exposed on the side surface of the conductive rotating shaft and the drive mechanism side and the outermost side surface of the ipsilateral conductive pipe become a slip ring and are exposed on the opposite side. The outermost contralateral conductive pipe side surface is used as a terminal, and the rotary table 112 is connected to the conductive pipe side surface. The conductive brushes 108a and 108b conduct to the slip ring while suppressing load torque and runout of the rotating shaft due to friction between the rotating shaft and the bearing. [Selection diagram] Fig. 2

Description

    The present invention relates to a slip ring mechanism used for a rotary display device with a power supply that suppresses rotational power consumption, a rotary illumination device, a rotary signboard, and the like.

  A slip ring mechanism is often used for a rotary display device with power supply, a rotary illumination device, and a rotary signboard.

Various types of slip rings have been put into practical use, but a typical type among them is called a so-called cylindrical type.
Patent Document 1 below is an example of a cylindrical shape. In the cylindrical shape, rings and insulating disks are alternately arranged in the axial direction, each ring is insulated to form an independent conductive path, and the brush corresponding to the position of the ring is in contact with each other and the brush and the ring are kept conductive. It is configured to be able to rotate the sliding path.
In many cases, the ring has a substantially cylindrical shape. One end of the lead wire is soldered inside the ring and the other end of the lead wire is on the rotating side in order to connect to the electrical component on the rotating side. The electrical parts are soldered, and the ring and the electrical parts are connected.
It is generally seen that the brush that supplies electricity to the slip ring is pressed in one direction of the slip ring. Patent Document 2 below is an example.
In general, the slip ring mechanism has a structure in which a slip ring body is sandwiched in the axial direction and a bearing is provided. Patent Documents 3 and 4 below are examples.

JP-A-6-310250 JP 2009-205984 PR (Figure 4) JP 2000-340997 PR (Fig. 3) JP 2009-205984 PR (Figure 2)

However, the structure of the conventional cylindrical slip ring, the connection structure between the slip ring and the brush, the structure in which the rotary table is assembled to the slip ring mechanism, and the structure in which the slip ring mechanism is assembled to the rotating device have the following problems.

In the structure of the cylindrical slip ring, the lead wire must be connected to the inside of the ring by soldering or the like, and the assemblability is not good. Furthermore, since the number of man-hours is increased, it becomes expensive.

In order to increase the conductive number of the structure of the cylindrical slip ring, the dimension of the ring rotating body in the thrust direction becomes extremely large and cannot be mounted on a thin device. In addition, (insulating conductivity-1) insulating plates are required between the ring and the brush, which increases the number of parts and man-hours.

In the structure of the cylindrical slip ring, since the lead wire passes through the shaft of the ring rotating body by the number of the conductive wires, the diameter of the conductive rotating shaft becomes large. Furthermore, when the conductive rotating shaft is increased, load torque due to friction received from the bearing portion is increased.

In order to connect the slip ring and the brush, the load torque increases due to the frictional deviation in the radial direction between the rotating shaft and the bearing due to the pressure of the brush against the slip ring.

In order to assemble the rotary table to the slip ring mechanism, the lead wire must be passed through the shaft, or another hole for passing the lead wire through the rotary table must be provided. In addition, a structure in which the rotary table bearing is separately provided must be provided, which increases the number of steps and is expensive.

The structure in which the slip ring mechanism is assembled to the rotating device has a large number of parts and takes up a large amount of space due to the structure in which the bearings are attached to the upper and lower sides with the slip ring body interposed therebetween.

The present invention takes this technical problem into consideration.

In a rotating device provided with a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, a conductive rotating shaft and a conductive pipe are arranged concentrically from the center in the radial direction, and a necessary conductive path Depending on the number, the conductor pipe is repeatedly arranged concentrically in this order on the outer periphery of the conductive pipe. The smaller the diameter of the conductive pipe, the longer it is stripped on both sides in the axial direction, and the portion that is stripped to the side of the conductive rotating shaft and the drive mechanism The slip ring mechanism is characterized in that the outermost side surface of the same conductive pipe becomes a slip ring and the portion exposed to the opposite side and the outermost side surface of the opposite conductive pipe become a terminal.

    The rotary device having a slip ring and a brush that is in sliding contact with the slip ring and is electrically connected to the slip ring side, wherein the slip ring is formed with an annular constriction by spinning. 1 slip ring mechanism is provided.

    In a rotating device including a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, the two brushes of one brush body that supports both ends of the conductive brush are radially arranged. The slip ring mechanism according to claim 1, wherein the slip ring is sandwiched and contacted at the maximum distance of the ring diameter.

    In a rotating device including a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, a rotating shaft is connected to a contact point of a brush body that is different in conductivity with the slip ring of the conductive brush. 4. The slip ring mechanism according to claim 3, wherein the reference has contacts at different angular positions.

    2. A rotating device comprising a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, wherein a rotary table is attached to the outer periphery of the conductive pipe. A slip ring mechanism is provided.

According to the present invention, the following effects can be obtained.

By the first idea

Since the drive rotating shaft is used for the slip ring, an increase in load torque due to friction with the electric supply brush due to an increase in the outer dimension of the slip ring can be avoided, saving space and power.

Since the slip ring and the terminal are formed of an integral conductive pipe, an increase in load torque due to friction with the electric supply brush due to an increase in the outer dimension of the slip ring can be avoided, thereby saving power and space.

Since the terminal is made of a circular pipe, the innermost terminal can be easily joined to the lead wire to the electrical component by caulking.

Since the terminal is made of a circular pipe, it can be threaded on the inner periphery or outer periphery of the innermost terminal, and the other terminals can be threaded on the outer periphery, making it easy to change the lead wires for electricity supply.

By the second idea

With the constriction of the conductive pipe positioned in the axial direction between the rotating shaft and the conductive pipe, there is no need for an insulating disk or position fixing material, and it is inexpensive and space-saving, forms a perfect circle, and the outer shape of the slip ring is reduced. By abutting on the constricted position, an increase in load torque due to friction can be avoided, and power saving and stable conduction can be achieved.

By the third idea

There is no frictional deviation in the radial direction between the rotating shaft and the bearing due to the pressing force of the brush, and an increase in load torque can be avoided, thus saving power. Since it is supported at both ends, even if the slip ring or brush is worn, the contact position between the slip ring and the brush is kept in contact at the maximum distance, and an increase in load torque can always be avoided.

By the fourth idea

Since the slip ring and conductive brush have two or more contacts on the left and right across the radial center line, the conductive brush acts as a bearing for the rotating shaft, reducing the number of parts and making it compact and inexpensive.

By the fifth idea

By assembling the rotary table to the outer periphery of the conductive pipe, it is possible to conduct electricity from the terminal that is above the rotary table, and the rotary table coupling position is close to the slip ring, so there is no need to add bearings and the structure is simple and inexpensive .

It is a perspective view of the Example of the rotary electric machine apparatus using the present invention slip ring mechanism. It is a longitudinal cross-sectional view of the Example of the rotary electric machine apparatus using the present invention slip ring mechanism. It is a cross-sectional view of the present invention slip ring body and brush body contact state. It is an enlarged view of the cross section of a present invention slip ring body and a brush body contact state. It is a longitudinal cross-sectional view of the rotation part of the present invention slip ring mechanism. It is spinning processing implementation explanatory drawing of this invention slip ring mechanism. It is a perspective view of the terminal Example of the present invention slip ring mechanism. It is a perspective view of the terminal Example of the present invention slip ring mechanism.

FIG. 2 is a longitudinal sectional view of the slip ring mechanism of the present invention. Hereinafter, description will be made with reference to FIG.

The slip ring mechanism 100 includes a rotation side and a fixed side. The slip side includes a slip ring mechanism housing 101, a drive mechanism housing 111, metal brush fixing screws 113 (a, b), and the like. The shaft gear 106 and the rotary table 112 include a slip ring 102, an insulating material 104, an insulating material 110, a push nut 120, etc., all of which are fixed integrally, and the lower end of the annular constriction in the pipe of the conductive pipe 102a is fitted so as to reach the upper end of the conductive drive shaft. Match.
The fixed side and the rotating side are relatively rotatable about the shaft 105. Rotational power is received by a gear 106 incorporated in the drive mechanism casing 116 and integrated with the conductive rotary shaft 105.

FIG. 3 is a cross-sectional view showing a contact state between the slip ring and the brush. Hereinafter, description will be given with reference to FIG.

The brush body 108a has one end fixed to a conductive material, and two brushes supported at the other end by a hole that is loosely fitted in the casing 101 sandwiches the conductive rotation shaft in the radial direction and is in contact with the maximum distance of the shaft diameter. Similarly, in the brush body 108b, two brushes sandwich the slip ring in the radial direction and contact at the constricted position at the maximum distance of the diameter of the ring constriction, and there is a contact at an angular position different from 108a in the radial direction.

FIG. 4 is an enlarged cross-sectional view showing a contact state between the slip ring and the brush.

FIG. 5 is a rotation-side longitudinal sectional view.

FIG. 6 is a drawing showing a spinning process. Hereinafter, description will be made with reference to FIG.

Spinning is used to fix the positions of the slip rings 102a and 102b, the insulating material 104, and the rotating shaft 105. The slip ring 102a, the insulating material 104, and the slip ring 102b are arranged in the radial direction, the cylindrical rod is pressed against the side of the slip ring on the flat plate, and the slip ring body is rotated in the radial direction by the axial movement of the cylindrical rod. A constriction is provided to fix the slip ring 102a, the insulating material 104, and the slip ring 102b.

FIG. 7 is a perspective view of an embodiment of a terminal shape. Hereinafter, description will be made with reference to FIG.

The crimping ring 117 is a caulking ring, and a lead wire to an electrical component is pressed and connected with the terminal 102b. In the terminal 102a, a lead wire to the electric component is inserted and crimped from the outer peripheral direction.

FIG. 8 is a perspective view of an embodiment of a terminal shape. Hereinafter, description will be made with reference to FIG.

Screw the outer periphery or inner periphery of the terminal 202a and attach the lead wire to the electrical component with a nut or screw. Screw the outer periphery of the 203b terminal and attach the lead wire to the electrical component with a nut.

100 slip ring mechanism
101 Slip ring mechanism housing (insulating material)
102 (a, b) Conductive pipe
104 Insulation material
105 Conductive rotating shaft
106 Gear (insulating material)
107 Bearing and gear presser (insulating material)
108 (a, b) Brush body
109 Bearing
111 Drive mechanism housing (insulating material)
112 Rotary table (insulating material)
113 (a, b) Primary power supply and metal brush fixing screw
116 Drive mechanism casing (insulating material)
117 Crimping ring
118 nut
119 nut
120 Push nut
121 Drive mechanism fixing screw
122 Drive mechanism fixing nut
202 (a, b) Conductive pipe

Claims (5)

In a rotating device equipped with a slip ring and a brush that is in sliding contact with the slip ring and is electrically connected to the slip ring side, the first slip ring is radially centered from the center (1) conductive rotating shaft, (2) conductive Pipe, (3) Insulator, (4) Conductive pipe [However, (3) and (4) are arranged and repeated according to the required number of conductors. The total conductive number is 1 or more] are concentrically arranged, and the smaller the diameter of the conductive pipe, the longer the both sides of the conductive pipe are exposed in the axial direction. It is characterized in that the side surface becomes a slip ring and the side surface of the outermost opposite side conductive pipe becomes the terminal.
The rotary device having a slip ring and a brush that is in sliding contact with the slip ring and is electrically connected to the slip ring side, wherein the slip ring is formed with an annular constriction by spinning. 1 slip ring mechanism.
In a rotating device including a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, two brushes of one brush body that supports both ends of the conductive brush are radially arranged. The slip ring is sandwiched and contacted at the maximum distance of the ring diameter. (Total number of conductive paths is 1 or more)
In a rotating device including a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, a rotating shaft is provided at a contact point of a different conductive path in conduction with the slip ring of the conductive brush. 4. The slip ring mechanism according to claim 3, wherein the reference has contacts at different angular positions. (The total number of conductive paths is 2 or more)
  2. The rotating device including a slip ring and a brush that is in sliding contact with the slip ring and electrically connected to the slip ring side, wherein a rotating table is attached to the outer periphery of the conductive pipe. Slip ring mechanism.