KR102498043B1 - Electric contact system between rotation body and fixing structure - Google Patents

Abstract

An objective of the present invention is to provide an electric contact system between a rotation body and a fixing structure. The electric contact system between a rotation body and a fixing structure comprises: a fixing structure (120) which is provided with a rotation guide hole (122); an electrode part (130) which is provided in the fixing structure (120); a rotation body (140) which is accommodated in the rotation guide hole (122); a rotation-side electrode part (150) which is provided in the rotation body (140) to be coupled to the electrode part (130); and a plurality of current-carrying balls (160) which are filled in a space between the electrode part (130) and the rotation-side electrode part (150).

Description

Electric contact system between rotation body and fixing structure}

The present invention relates to an electrical contact system between a rotating body and a fixed structure for electrical contact between a rotating body and a fixed structure, and more particularly, to an electrical contact system between a rotating body and a fixed structure, which is an electrical connection system using a conductive ball. will be.

In order to electrically connect the rotating body and the fixed structure, a conductive part is installed between the two structures so that the electrical connection is not broken when the rotating body rotates in order to block transmission of electromagnetic waves due to conduction and gaps.

Referring to FIG. 1, electrode part 1 is attached to the fixed structure as a conductor plate, and electrode part 2 is configured to be attached to the rotating body as a conductor plate + copper mesh or brush.

However, most of the foreign equipment that has been installed in the past has a structure as shown in FIG. 1, so there are many gaps (10x10mm or more), and it is a contact method that is very insufficient to absorb rotational shaking of structures made of bending and welding.

The mesh of electrode part 2 is made in the form of a tube by weaving very thin copper wires, so it has very low durability and requires frequent replacement.

In the case of electrode part 2, the one made of brush (brush type) is gradually reduced in thickness due to breakage (cutting) during operation, and its durability is low. At the same time, there is a problem of falling to the bottom of the equipment and handling it as a foreign substance.

In order to minimize transmission of electromagnetic waves, the gap between the rotating body and the fixed structure must be made as small as possible, but there is a problem in that it is not easy to replace the electrode Part 2 accordingly.

In order to replace the electrode part 2, foreign equipment manufacturers have to import custom-made parts according to their own specifications, so there are unavoidable problems such as high cost and long replacement period. That is, the existing electric contact system has a problem in that, in order to replace electrodes attached to the rotating body, custom-made parts from foreign equipment makers must be imported to meet their own specifications, and the replacement period is frequent.

Korean Patent Registration No. 10-1126873 (registered on March 7, 2012) Korean Registered Patent No. 10-0424281 (registered on March 11, 2004) Korean Patent Publication No. 10-2013-0111204 (published on October 10, 2013) Korean Utility Model Publication No. 20-2011-0008481 (published on August 31, 2011)

An object of the present invention is to provide a new electrical contact system between a rotating body and a fixed structure, which implements an electrical connection using a conductive ball mainly made of a stainless steel ball for an electrical contact between the fixed structure and the rotating body.

According to the present invention for solving the above problems, the fixed structure 120 having a rotation guide hole 122; an electrode part 130 provided on the fixing structure 120; a rotation body 140 accommodated in the rotation guide hole 122; a rotating side electrode part 150 provided on the rotating body 140 and coupled to the electrode part 130; A plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotation-side electrode part 150; there is provided an electrical connection system between a rotating body and a fixed structure comprising a.

The electrode part 130 has an inner channel piece 134 and an outer channel piece 136 parallel to each other on the bottom channel piece 132 and is composed of a circular channel shape having an insertion hole open upward, and the rotation The side electrode part 150 is composed of a circular plate shape inserted into the electrode part 130 through the insertion hole of the electrode part 130, and the outer surface of the rotating side electrode part 150 and the electrode part It is characterized in that the space is secured between the inner surfaces of the outer channel piece 136 of (130), and a plurality of conductive balls 160 are filled in the space.

A plurality of the conductive balls 160 are in contact with each other and a part of the plurality of conductive balls 160 is in contact with the electrode part 130 and the rotation side electrode part 150, and the plurality of conductive balls 160 are in contact with each other. It is characterized in that the electrode part 130 and the rotating side electrode part 150 are maintained in an electrically connected state.

The conductive ball 160 is characterized in that all balls having conductivity.

The top plate 121 of the fixing structure 120 is provided with a ball input slit 170 so as to be disposed above the top opening of the circular channel-shaped electrode part 130, and the top plate 121 has a ball input slit ( 170) is provided, the shutter 171 is opened, and the conductive balls 160 are inserted into the ball input slit 170 to insert a plurality of conductive balls into the inner space of the electrode part 130 (160).

The bottom channel piece 132 forming the electrode part 130 is provided with a drain hole 180 penetrating through the upper and lower surfaces, and a lower shutter 192 is slidably coupled to the bottom channel piece 132 so that the drain The lower shutter 192 opens and closes the hole 180, and the fixing structure 120 is equipped with an opening/closing operation cylinder 202 having a cylinder rod connected to the lower shutter 192.

While the cylinder rod of the opening/closing cylinder 202 is moving forward, the lower shutter 192 moves forward and keeps the drain hole 180 of the bottom channel piece 132 of the electrode part 130 blocked. , The plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotation-side electrode part 150 can fall under the electrode part 130 through the drain hole 180. .

In the present invention, the rotation-side electrode part provided in the rotating body is formed to have a space that is shaken by runout generated while rotating, and between the rotation-side electrode part and the electrode part provided on the fixed structure, mainly composed of balls of all conductive materials Conductive balls are configured to be stacked while filling the space as they move. In particular, by using stainless balls among the conductive balls, there is no need for separate maintenance semi-permanently. Inexpensive effect, by implementing a ball-filling structure in the electrical connection between the fixed structure and the rotating body, there is an effect of reducing costs by more than 10 times compared to the existing ones.

1 is a view showing the structure of an electrical contact between a conventional fixed structure and a rotating body;
2 is an external perspective view of an electrical contact system between a rotating body and a fixed structure according to the present invention, and a view showing the structure of an electrode part, a rotating side electrode part, and a conductive ball;
3 is a half-cut perspective view of FIG. 2 and showing the structure of electrode parts, rotating electrode parts, and conductive balls;
4 is a longitudinal cross-sectional view showing an enlarged structure of an electrode part, a rotation-side electrode part, and a conductive ball, which are main parts of the present invention;
5 is an external perspective view of an electrical connection system between a rotating body and a fixed structure according to another embodiment of the present invention;
6 is an enlarged longitudinal sectional view of part A of FIG. 5;
7 is a longitudinal cross-sectional view showing a state in which the shutter shown in FIG. 6 is opened;
8 is a longitudinal cross-sectional view showing the structure of an electrode part, a rotation-side electrode part, a conductive ball, and a lower shutter, which are main parts of an electrical connection system between a rotating body and a fixed structure according to another embodiment of the present invention;
FIG. 9 is a view showing a state in which the lower shutter shown in FIG. 8 is opened.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, features and advantages of the present invention will be more easily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. For example, when an element is described as being “connected,” “coupled,” or “connected” to another element, that element may be directly connected or connected to the other element, but there is a gap between each element. It should be understood that another component may be “connected”, “coupled” or “connected”.

Figure 2 is an external perspective view of the electrical connection system between the rotating body and the fixed structure according to the present invention, showing the structure of the electrode part, the rotating electrode part, and the conductive ball, Figure 3 is a half-cut perspective view of FIG. 2 and the electrode part and rotation A drawing showing the structure of a side electrode part and a conductive ball, FIG. 4 is a longitudinal cross-sectional view showing an enlarged structure of an electrode part, a rotating side electrode part, and a conductive ball, which are main parts of the present invention.

Referring to the drawings, the present invention is a fixed structure 120 having a rotation guide hole 122; an electrode part 130 provided on the fixing structure 120; a rotation body 140 accommodated in the rotation guide hole 122; a rotating side electrode part 150 provided on the rotating body 140 and coupled to the electrode part 130; A plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotation-side electrode part 150; It is an electrical connection system between a rotating body and a fixed structure including a.

The rotation guide hole 122 is formed in the shape of a circular hole penetrating the top plate 121 of the fixed structure 120 through upper and lower surfaces.

The rotation body 140 has a disk shape and is accommodated in the rotation guide hole 122 of the fixed structure 120, and the central portion of the rotation body 140 is connected to the motor shaft of the rotation drive motor, so that the motor shaft of the rotation drive motor The rotation body 140 is configured to rotate in the rotation guide hole 122 of the fixed structure 120 by rotation.

The electrode part 130 has an inner channel piece 134 and an outer channel piece 136 parallel to each other on the bottom channel piece 132 and is composed of a circular channel shape having an insertion hole open upward, and the rotation The side electrode part 150 is composed of a circular plate shape inserted into the electrode part 130 through the insertion hole of the electrode part 130, and the outer surface of the rotating side electrode part 150 and the electrode part The space is secured between the inner surfaces of the outer channel piece 136 of 130, and a plurality of conductive balls 160 are filled in the space. The rotation-side electrode part 150 in the shape of a circular plate is inserted into the electrode part 130 through the insertion hole of the electrode part 130 in a vertical state. The fixed support plate connected to the upper end of the circular plate-shaped rotating electrode part 150 is fixed to the lower surface of the rotating body 140 by welding or fixing means such as brackets and bolts. The circular channel-shaped electrode part 130 is also fixed to the lower surface of the upper plate 121 of the fixing structure 120 by welding or fixing means such as brackets and bolts.

In the present invention, a plurality of conductive balls 160 are in contact with each other, and a part of the plurality of conductive balls 160 is in contact with the electrode part 130 and the rotating side electrode part 150, and the plurality of conductive balls 160 are in contact with each other. The raw electrode part 130 and the rotating side electrode part 150 are maintained in an electrically connected state. While the rotating body 140 rotates on the fixed support, the electrode part 130 and the rotating side electrode part 150 remain electrically connected, and as a result, even during the rotation of the rotating body 140, the rotating body ( 140) and the fixing structure 120 may remain electrically connected.

In the present invention, the conductive ball 160 is any conductive ball shape. The diameter of the conductive ball 160 is 5 mm. The present invention is a type in which a 5mm stainless ball is filled into a groove. That is, the stainless ball is a conductive ball 160, and the groove means a space inside the electrode part 130 configured in a circular channel shape.

Due to the runout caused by the rotation of the structure with a diameter of 9.5m, the "electrode part" can fluctuate, so it has a certain amount of space to move.

The conductive balls 160 serve to fill the space with each other like sand grains while moving, and the space between the 5 mm conductive balls 160 is only about a 2.5 * 2.5 * 2.5 mm equilateral triangle when viewed in plan. The cross-sectional area is less than 1/30 compared to the gap (approximately 10*10mm square) that occurs when using the existing mesh parts, and the gap is less than 1/100 in terms of space (3D). As a result, there is an effect of ensuring electrical conductivity reliably. The height at which the conductive balls 160 are stacked is about 15 mm, and three or more layers are stacked with respect to the size of the conductive balls 160 when viewed in staggered stacking.

The present invention has an effect that does not require separate maintenance semi-permanently by using a stainless ball.

In terms of component cost, it is very inexpensive by manufacturing a simple bent product and purchasing a conductive ball 160.

In the case of domestic production with the existing copper mesh, it is expected that the cost will be more than 10 times higher than the ball filling type of the present invention, although there will be differences depending on the specifications of imported materials + bent products + combination. On the other hand, the present invention has an effect of reducing costs by 10 times or more compared to the conventional method by implementing a ball filling structure.

On the other hand, Figure 5 is an external perspective view of an electrical connection system between a rotating body and a fixed structure according to another embodiment of the present invention, Figure 6 is an enlarged longitudinal cross-sectional view of part A of Figure 5, Figure 7 is a shutter shown in Figure 6 8 is a longitudinal cross-sectional view showing an open state, FIG. 8 is a longitudinal cross-sectional view showing the structure of an electrode part, a rotating side electrode part, a conductive ball, and a lower shutter, which are main parts of an electrical connection system between a rotating body and a fixed structure according to another embodiment of the present invention 9 are views showing a state in which the lower shutter shown in FIG. 8 is opened.

According to the present invention, the upper plate 121 of the fixed structure 120 is provided with a ball input slit 170 so as to be disposed above the upper opening of the electrode part 130 having a circular channel shape, and the upper plate 121 has A shutter 171 for opening and closing the ball input slit 170 is provided, and the shutter 171 is opened to insert the conductive ball 160 into the ball input slit 170 to enter the inner space of the electrode part 130 It is configured to charge a plurality of conductive balls (160). At this time, the shutter 171 is configured to open and close along the guide rail 172 in a state supported by the guide rail 172 provided on the bottom surface of the upper plate 121 of the fixing structure 120 . The guide rail 172 is a connection rail piece 172A, the upper end of which is connected to the bottom surface of the top plate 121 of the fixed structure 120, and the upper plate of the fixed structure 120 ( 121) and a supporting rail piece disposed in a horizontal direction facing each other.

The ball input slit 170 has a circumferential hole shape when viewed from above the upper plate 121 of the fixing structure 120, the shutter 171 has a circumferential plate shape, and the guide rail 172 has a circumferential It is composed of a molded rail shape, and while the shutter 171 slides along the guide rail 172 in a state where a part of the bottom surface of the inner and outer ends of the shutter 171 is supported by the supporting rail piece of the guide rail 172, The shutter 171 is configured to open or close the slit. Preferably, the shutter 171 is provided with an opening and closing guide groove, and is configured to open or close the shutter 171 by inserting an opening and closing mechanism such as a bar into the opening and closing guide groove, or is coupled to the shutter 171 via a hinge to move upward A pivoting lever is provided so that an operator opens or closes the shutter 171 by holding the lever with his/her hand in a state in which the lever is pivoted upward toward the shutter 171 based on the hinge.

Therefore, in the present invention, when first charging the conductive ball 160 into the space between the circular channel-shaped electrode part 130 and the rotating electrode part 150, the shutter 171 is opened to insert the ball Since charging is possible by inserting the conductive ball 160 into the space between the electrode part 130 and the rotating electrode part 150 through the slit 170, the space between the rotating electrode part 150 and the electrode part 130 can be charged. The operation of putting a plurality of conductive balls 160 into the space of has a quick and easy effect.

On the other hand, after putting a plurality of conductive balls 160 into the space between the rotation-side electrode part 150 and the electrode part 130, the shutter 171 is closed again, and the top plate 121 of the fixed structure 120 The shutter 171 may be fixed to the upper plate 121 by a fastener such as a bolt to prevent the shutter 171 from opening again.

The bottom channel piece 132 forming the electrode part 130 is provided with a drain hole 180 penetrating through the upper and lower surfaces, and a lower shutter 192 is slidably coupled to the bottom channel piece 132 so that the drain The lower shutter 192 opens and closes the hole 180, and an opening/closing operation cylinder 202 having a cylinder rod connected to the lower shutter 192 is mounted on the fixing structure 120.

While the cylinder rod of the opening/closing cylinder 202 is moving forward, the lower shutter 192 moves forward and keeps the drain hole 180 of the bottom channel piece 132 of the electrode part 130 blocked. , The plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotation-side electrode part 150 can fall under the electrode part 130 through the drain hole 180. . The lower shutter 192 blocks the drain hole 180 of the bottom channel piece 132 in a state supported by the support piece 194 protruding from the bottom of the bottom channel piece 132 forming the electrode part 130. It consists of The drain hole 180 has a cylindrical hole shape when viewed from above of the bottom channel piece 132 of the electrode part 130, the lower shutter 192 has a cylindrical plate shape, and the support piece 194 ) is composed of a cylindrical support piece shape, and in a state in which the lower shutter 192 blocks the drain hole 180 of the bottom channel piece 132, a part of the lower surface of the lower shutter 192 is attached to the support piece 194 It is configured to firmly maintain the state in which the drain hole 180 of the bottom channel piece 132 is blocked in the supported state. The support piece 194 is connected to a connection piece fixed to the bottom surface of the top plate 121 of the fixing structure 120 and is disposed in a horizontal direction facing the top plate 121 of the fixing structure 120 .

Therefore, when a plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotating side electrode part 150 are discharged and new conductive balls 160 are to be filled in the space, the opening and closing operation cylinder ( 202), the plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotation-side electrode part 150 are moved under the electrode part 130 by moving the lower shutter 192 backward. Since it is easily and quickly discharged, the operation of charging the new conductive ball 160 in the space between the electrode part 130 and the rotating side electrode part 150 has a quick and easy effect.

In the above, specific embodiments of the present invention have been described in detail. However, the spirit and scope of the present invention is not limited to these specific embodiments, and it is common knowledge in the technical field to which the present invention belongs that various modifications and variations are possible without changing the gist of the present invention. Anyone who has it will understand.

Therefore, since the embodiments described above are provided to completely inform those skilled in the art of the scope of the invention to which the present invention belongs, it should be understood that it is illustrative in all respects and not limiting, The invention is only defined by the scope of the claims.

120. Fixed structure 121. Deck
122. Rotation guide hole 130. Electrode part
132. Bottom channel piece 134. Inner channel piece
136. Outer channel piece 140. Rotating body
150. Rotating side electrode part 160. Conductive ball
170. Ball input slit 171. Shutter
172. Guide rail 172A. connecting rail
172B. Support rail piece 182. Drain hole
192. Lower shutter 194. Support piece
202. Opening and closing operating cylinders

Claims (4)

A fixed structure 120 having a rotation guide hole 122;
an electrode part 130 provided on the fixing structure 120;
a rotation body 140 accommodated in the rotation guide hole 122;
a rotating side electrode part 150 provided on the rotating body 140 and coupled to the electrode part 130;
A plurality of conductive balls 160 filled in the space between the electrode part 130 and the rotating side electrode part 150; Including,
The electrode part 130 has an inner channel piece 134 and an outer channel piece 136 parallel to each other on the bottom channel piece 132 and is composed of a circular channel shape having an insertion hole open upward, and the rotation The side electrode part 150 is composed of a circular plate shape inserted into the electrode part 130 through the insertion hole of the electrode part 130, and the outer surface of the rotating side electrode part 150 and the electrode part The space is secured between the inner surfaces of the outer channel piece 136 of 130, and a plurality of conductive balls 160 are filled in the space,
A plurality of the conductive balls 160 are in contact with each other and a part of the plurality of conductive balls 160 is in contact with the electrode part 130 and the rotation side electrode part 150, and the plurality of conductive balls 160 are in contact with each other. The electrode part 130 and the rotating side electrode part 150 are kept in electrical contact,
The top plate 121 of the fixing structure 120 is provided with a ball input slit 170 so as to be disposed above the top opening of the circular channel-shaped electrode part 130, and the top plate 121 has a ball input slit ( 170) is provided, the shutter 171 is opened, and the conductive balls 160 are inserted into the ball input slit 170 to insert a plurality of conductive balls into the inner space of the electrode part 130 configured to charge (160);
The shutter 171 is configured to open and close along the guide rail 172 in a state supported by the guide rail 172 provided on the bottom surface of the upper plate 121 of the fixed structure 120,
The ball input slit 170 has a circumferential hole shape when viewed from above the upper plate 121 of the fixing structure 120, the shutter 171 has a circumferential plate shape, and the guide rail 172 has a circumferential It is composed of a molded rail shape, and while the shutter 171 slides along the guide rail 172 in a state where a part of the bottom surface of the inner and outer ends of the shutter 171 is supported by the supporting rail piece of the guide rail 172, The electric contact system of the rotating body and the fixed structure, characterized in that the shutter 171 is configured to open or close the slit.
delete delete According to claim 1,
The electrical contact system of the rotating body and the fixed structure, characterized in that the conductive ball 160 is all conductive balls.

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