KR20230167851A - High voltage relay - Google Patents

Abstract

The present invention relates to relays, and particularly to high voltage relays equipped with disc springs. The high-voltage relay according to the present invention includes a pair of fixed contacts, a movable contact contacting the pair of fixed contacts, a lower yoke provided below the movable contact, a shaft assembly that moves the movable contact up and down, and the lower yoke and shaft. It includes a contact part including a disc spring provided between the assemblies, and an actuator part that moves the shaft assembly up and down to control the movable contact point to contact the pair of fixed contact points. Accordingly, the high voltage relay according to the present invention can improve electrical characteristics by applying a disc spring as a contact spring to improve the inclination of the movable contact point so that the movable contact point and the fixed contact point are in contact at the same time.

Description

High voltage relay

The present invention relates to relays, and particularly to high voltage relays equipped with disc springs.

A relay is a device that operates by external input to open and close other circuits, and includes contact relays, pressure relays, optical relays, and thermal relays. Among these, the contact relay controls the contact point by operating the actuator by external input. Among these contact relays, the fastening force of the movable contact and the lower yoke and the current flow of the movable contact are important for the high-voltage relay applied to high voltage. Here, the existing high-voltage relay used a coil spring as a contact spring to restore the position of the movable contact point.

However, when using a coil spring as a contact spring, if the verticality and flatness of the coil spring are not good, the movable contact point is tilted, causing a difference in the flatness of the left and right sides. Additionally, in this case, the two fixed contact points and the movable contact point do not contact at the same time but contact each other sequentially, adversely affecting the electrical characteristics. Therefore, technology that can solve this problem is required.

Japanese Patent Publication No. 2015-0028803 (published March 16, 2015)

The purpose of the present invention is to provide a high voltage relay that can minimize left and right sequential contact when contacting a movable contact and a fixed contact.

The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood through the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

The high-voltage relay according to the present invention includes a pair of fixed contacts, a movable contact in contact with the pair of fixed contacts, a lower yoke provided at the lower part of the movable contact, a shaft assembly that moves the movable contact up and down, and a lower yoke. A contact portion including a disc spring provided between the shaft assemblies,

It includes an actuator unit that moves the shaft assembly up and down to control the contact of the movable contact point with the pair of fixed contact points.

The disc spring includes a lower disc spring in contact with the upper part of the shaft assembly, an upper disc spring in contact with the movable contact point or lower yoke, and at least one disc spring provided between the lower disc spring and the upper disc spring and in which the two disc springs are in contact with each other. Includes set.

The high-voltage relay according to the present invention can improve electrical characteristics by applying a disc spring as a contact spring to improve the inclination of the movable contact point so that the movable contact point and the fixed contact point are in contact at the same time.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

1 is an exploded perspective view of a high-voltage relay according to the present invention.
Figure 2 is a schematic perspective view of a moving assembly in a high voltage relay according to the present invention.
Figure 3 is a perspective view of a contact spring in a high-voltage relay according to the present invention.
Figure 4 is a schematic cross-sectional view of a high-voltage relay according to the present invention.

The above-mentioned objects, features, and advantages will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, identical reference numerals are used to indicate identical or similar components.

1 is an exploded perspective view of a high-voltage relay according to the present invention.

As shown in FIG. 1, the high-voltage relay according to the present invention includes a contact part 1000 that controls the flow of current through the contact point, and an actuator part 2000 that controls the contact part 1000 by an external power source. .

The contact unit 1000 controls the flow of current by bringing the movable contact point 1230 into contact with or leaving the fixed contact point 1120 under the control of the actuator unit 2000. For this purpose, the contact unit 1000 includes an arc chamber 1100 equipped with a fixed contact point 1120, and a moving contact point 1230 provided in the arc chamber 1100 to operate the movable contact point 1230 under the control of the actuator unit 2000. It includes an assembly 1200 and an upper frame assembly 1300 that houses the arc chamber 1100.

The arc chamber 1100 is for energizing and maintaining airtightness and includes a box-shaped ceramic chamber 1110 and a fixed contact point 1120 fixed to the upper part of the ceramic chamber 1110. Additionally, it includes a cap plate 1130 that seals the lower edge that is opened when the ceramic chamber 1110 is assembled.

The ceramic chamber 1110 prevents the arc generated when the movable contact point 1230 contacts the fixed contact point 1120 from being emitted to the outside. For this purpose, the ceramic chamber 1110 is exemplified as a rectangular parallelepiped in which the remaining area except the lower portion is closed, that is, the lower portion is open. In addition, two holes spaced apart from each other are formed in the upper part of the ceramic chamber 1110 to fix the fixed contact point 1120. The open lower part of the ceramic chamber 1110 is sealed by an arc protector 1260, which will be described later, and the sealed interior is filled with gas for arc extinguishing.

The fixed contact point 1120 is fixed to two holes formed in the upper part of the ceramic chamber 1110 and conducts electricity when the movable contact point 1230 comes into contact with it. These fixed contact points 1120 include a first fixed contact point 1121 and a second fixed contact point 1122 respectively provided in two holes formed in the ceramic chamber 1110, and the first fixed contact point 1121 and the second fixed contact point 1122 The upper part of the fixed contact 1122 is exposed to the outside and the lower part is exposed to the inside of the ceramic chamber 1110. In addition, the fixed contact point 1120 has a cylindrical shape and is made of a metal material so that the first fixed contact point 1121, the movable contact point 1230, and the second fixed contact point 1122 are energized when the contact points are contacted.

Meanwhile, a ring-shaped seal cap (not shown) may be provided between the fixed contact point 1120 and the ceramic chamber 1110 to maintain airtightness.

The cap plate 1130 closes and seals the open border between the ceramic chamber 1110 and the plate 2230. The cap plate 1130 is exemplified as being formed in a rectangular loop shape with an open center, and is preferably made of metal and protrudes upward along the edge so that it can be inserted into the inner edge of the ceramic chamber 1110. Additionally, a seal may be provided between the cap plate 1130 and the ceramic chamber 1110 to increase sealing force.

Figure 2 is a schematic perspective view of a moving assembly in a high voltage relay according to the present invention.

The moving assembly 1200 is moved by the actuator unit 2000 to pass electricity between the first fixed contact point 1121 and the second fixed contact point 1122. To this end, the moving assembly 1200 includes an upper yoke 1210, a movable contact 1230, a lower yoke 1240, a contact spring 1250, an arc protector 1260, and a shaft assembly 1270.

The upper yoke 1210 is located above the movable contact point 1230 and is fixed in position by a yoke holder 1271, which will be described later. In addition, the upper yoke 1210 has a square plate shape, and one side, the other side, and the upper surface are fixed in contact with the upper one side, the other upper side, and the upper part of the yoke holder 1271, respectively. This upper yoke 1210 may be made of metal, for example, nickel-plated iron. Additionally, a protrusion protruding upward is formed on the upper surface of the upper yoke 1210, and a concave portion concave upward is formed on the lower surface.

The movable contact point 1230 causes, for example, a current applied to the first fixed contact point 1121 to flow to the second fixed contact point 1122 through contact with the fixed contact point 1120. The movable contact point 1230 is entirely formed in the shape of a rectangular plate, and the edges of the area in contact with the contact points located on one side and the other side, that is, the fixed contact point 1120, are rounded. Additionally, the central edge of the movable contact point 1230 is narrower than the area in contact with the fixed contact point 1120.

The lower yoke 1240, together with the upper yoke 1210, increases the lifting force of the movable contact point 1230. For this purpose, an upper yoke 1210 is provided on the upper part of the movable contact point 1230 and a lower yoke 1240 is provided on the lower part of the movable contact point 1230, and the upper yoke 1210 and the lower yoke 1240 move together. It is formed to surround the direction crossing the longitudinal direction of the contact point 1230. Accordingly, the lower yoke 1240 is illustrated as having a ‘U’ shape with the front and rear sides bent upward. Additionally, a yoke hole is formed in the center of the lower yoke 1240. In addition, the periphery of the yoke hole is formed with a circular seating portion that is convex upward so that the contact spring 1250, which will be described later, is seated. This lower yoke 1240 is exemplified as being formed of the same material as the upper yoke 1210.

The contact spring 1250 is used to restore the position of the movable contact point 1230. The upper part is in contact with the seating portion formed on the lower surface of the lower yoke 1240, and the lower part is positioned so that it is in contact with the upper surface of the shaft body 1272. . The present invention uses a disc spring as the contact spring 1250.

Figure 3 is a perspective view of a contact spring in a high-voltage relay according to the present invention.

The present invention uses a plurality of overlapping disc springs to perform the function of the contact spring 1250, and this embodiment illustrates a contact spring 1250 in which six disc springs are overlapped. In addition, the six disc springs are illustrated as consisting of two disc springs and two disc spring sets. Accordingly, the contact spring 1250 of this embodiment includes a lower disc spring 1251, an upper disc spring 1252, a first disc spring set 1253, and a second disc spring set 1254.

The lower disc spring 1251 is in contact with the upper part of the shaft body 1272 and is located on the shaft body 1272 in a positive direction, that is, in a direction in which the diameter decreases toward the top. Here, the wider diameter lower part of the lower disk spring is brought into contact with the shaft body 1272 to increase positional stability even on the moving shaft body 1272.

The top of the upper disc spring 1252 is in contact with a seating portion formed on the lower surface of the lower yoke 1240, and the lower part is in contact with the top of the second disc spring set 1253, which will be described later. In addition, the upper disc spring 1252 has a diameter that decreases from the top to the bottom. Accordingly, the upper portion of the upper disc spring 1252 with a wider diameter comes into contact with the seating portion, thereby increasing positional stability.

The first disc spring set 1253 is provided in a form in which two disc springs are in contact with each other, with their lower surfaces having wide diameters facing each other. Accordingly, the diameter of the first disc spring set 1253 increases from the bottom to the middle and decreases again from the middle to the top. Accordingly, the lower part of the first disc spring set 1253 whose diameter decreases and the upper part of the lower disc spring 1251 come into contact with each other.

The second set of disc springs 1254 is located between the first set of disc springs 1253 and the upper disc spring 1252. Accordingly, the upper part of the second disc spring set 1254 is in contact with the lower part of the upper disc spring 1252, and the lower part is in contact with the upper part of the first disc spring set 1253. Here, the structure of the second disc spring set 1254 is the same as the first disc spring set 1253 described above.

Meanwhile, this embodiment illustrates two disc spring sets 1253 and 1254, but at least one disc spring set of the present invention may be provided. That is, between the upper disc spring 1252 and the lower disc spring 1251, one disc spring set in which two disc springs are in contact with each other may be provided, or two or more disc spring sets may be stacked. Additionally, the upper disc spring 1252 and the lower disc spring 1251 may be provided upside down. That is, the upper disc spring 1252 may increase in diameter from top to bottom, and the lower disc spring 1251 may have a diameter decrease from top to bottom. Additionally, in the disk spring set, the surfaces with a large diameter may not be in contact with each other, but the surfaces with a narrow diameter may be in contact with each other. In this case, the diameter of the disc spring set decreases from the top to the middle, and increases in diameter from the middle to the bottom.

As such, the present invention improves the inclination of the movable contact point 1230 by applying a disc spring instead of a coil spring as the contact spring 1250, thereby improving the electrical characteristics by allowing the movable contact point 1230 and the fixed contact point 1120 to contact simultaneously. It can be improved.

The arc protector 1260 prevents the arc generated when the fixed contact point 1120 and the movable contact point 1230 are in contact with each other from being emitted to the outside. To this end, the arc protector 1260 is provided to close the open lower part of the ceramic chamber 1110, and an arc chamber 1100 is formed to extinguish the arc. This arc protector 1260 includes a base plate 1261, a first arc extinguishing chamber 1262 and a second arc extinguishing chamber 1263 formed on one side and the other side of the base plate 1261, and one side and the other side of the opening 1264. It includes a stopper 1265 extending inward from.

The base plate 1261 is formed in a rectangular plate shape to close the open lower part of the ceramic chamber 1110. A first arc extinguishing chamber 1262 is formed on one side of the upper surface of the base plate 1261, and a second arc extinguishing chamber 1263 is formed on the other side of the upper surface of the base plate 1261.

The first arc extinguishing chamber 1262 allows the arc generated when the first fixed contact point 1121 and the movable contact point 1230 come into contact. The first arc extinguishing chamber 1262 is formed by a first closing wall protruding from the upper surface of the base plate 1261. The first closing wall protrudes upward along one edge of the base plate 1261 and is formed to surround one upper side of the base plate 1261. In addition, the first closing wall is formed in a rectangular shape based on the plan view, and the lower part is closed by the base plate 1261 and the upper part is open.

The second arc extinguishing chamber 1263 allows the arc generated when the second fixed contact point 1122 and the movable contact point 1230 come into contact. The second arc extinguishing chamber 1263 is defined by a second closed wall. Accordingly, the arc generated upon contact between the second fixed contact point 1122 and the movable contact point 1230 flows into the second arc extinguishing chamber 1263 and is extinguished. Additionally, the second fixed contact point 1122 is preferably provided on the upper part of the second closing wall.

The opening 1264 is formed between the first arc extinguishing chamber 1262 and the second arc extinguishing chamber 1263 and allows the shaft assembly 1270 to pass through. That is, the shaft assembly 1270 penetrates the opening 1264 and is provided across the actuator unit 2000 and the arc chamber 1100.

The stopper 1265 is formed on one side and the other side of the opening 1264 to prevent rotation of the shaft assembly 1270 and thus regulates the rotation of the movable contact point 1230. This stopper 1265 includes a first stopper protruding from one side of the opening 1264 and a second stopper protruding from the other side of the opening 1264. Of course, in the present invention, the above-described stopper 1265 may be omitted, and in this case, it is preferable that the groove portion into which the stopper 1265 is inserted is also omitted.

The shaft assembly 1270 allows the movable contact point 1230 to reciprocate up and down by the actuator unit 2000. This shaft assembly 1270 includes a yoke holder 1271 to which the upper yoke 1210 is fixed, a shaft body 1272 to which the yoke holder 1271 is fixed to the upper part, and a shaft fixed to the lower part of the shaft body 1272. Includes (1273).

The yoke holder 1271 fixes the upper yoke 1210, the lower yoke 1240, and the movable contact point 1230, and the upper part directly fixes the upper yoke 1210 and the lower part is fixed to the upper part of the shaft body 1272. do. This yoke holder 1271 is formed in a ‘ㄷ’ shape and covers the upper part of the upper yoke 1210, and the open lower part is fixed to the shaft body 1271. For this purpose, the yoke holder 1271 includes a first yoke holder 1271a that directly fixes the upper yoke 1210, and a second yoke holder that is coupled to the first yoke holder 1271a and fixed to the shaft body 1272. Includes (1271b).

The first yoke holder 1271a is formed in an 'n' shape to surround the upper yoke 1210 at the top, and a hole is formed on the upper surface to be coupled to the protrusion of the upper yoke 1210, and the two sides are formed on the upper surface. It extends by bending downward, but each central part is open and the lower end is coupled with the second yoke holder (1271b).

The second yoke holder 1271b fixes the first yoke holder 1271a to the shaft body 1272. For this purpose, the second yoke holder 1271b is formed in the shape of two plates and is inserted and fixed to one side and the other side of the shaft body 1271. Additionally, the exposed area of the second yoke holder 1271b is coupled to the lower portions of the two sides of the first yoke holder 1271a, respectively.

The shaft body 1272 fixes the yoke holder 1271 and the shaft 1273, electrically insulates them from each other, and prevents rotation of the movable contact point 1230. For this purpose, the shaft body 1272 has a generally cylindrical shape, and a separation prevention protrusion is formed on the upper surface to support the lower part of the contact spring 1250 and prevent separation. The separation prevention protrusion includes a middle protrusion supporting the inside of the contact spring 1250 and an external protrusion supporting the outside of the contact spring 1250. In addition, the middle protrusion is cylindrical and the outer protrusion is formed in an arc shape to correspond to the external shape of the contact spring 1250. In addition, a groove portion coupled to the stopper 1265 is formed in the shaft body 1272 to prevent rotation of the movable contact point 1230, and the groove portion includes a first groove portion corresponding to the first stopper and a second groove portion corresponding to the second stopper. 2 Includes home section.

The shaft 1273 is connected to the lower part of the shaft body 1272 and rises or falls on the actuator unit 2000. This shaft 1273 is formed in the shape of a rod, with the upper part connected to the shaft body 1272 and the lower part connected to the movable core 2310.

The upper frame assembly 1300 is provided to cover the arc chamber 1100 to protect the arc chamber 1100 and at the same time extinguish the arc generated within the arc chamber 1100. To implement this, the upper frame assembly 1300 includes a magnet 1310, a magnet holder 1320, and an upper frame 1330.

The magnet 1310 is used to extinguish the arc generated within the ceramic chamber 1110 using a magnetic field, and is formed on one side and the other outside the ceramic chamber 1110. Accordingly, the magnet 1310 includes a first magnet 1311 provided on one side outside the ceramic chamber 1110 and a second magnet 1312 provided on the other side outside the ceramic chamber 1110. Additionally, this embodiment illustrates that the magnet 1310 has a square plate shape, and accordingly, one side and the other side of the magnet 1310 have different poles. Here, this embodiment illustrates that one side of the first magnet 1311 is the S pole and the other side is the N pole, and the second magnet 1312 also illustrates that one side is the S pole and the other side is the N pole. Accordingly, the other side of the first magnet 1311 close to the ceramic chamber 1110 becomes the N pole, and one side of the second magnet 1312 close to the ceramic chamber 1110 becomes the S pole. Of course, the magnet 1310 may be omitted.

The magnet holder 1320 is provided to surround the magnet 1310 and protects the magnet 1310 by preventing it from being separated. This magnet holder 1320 is coupled to the upper frame 1330 and its edges protrude and bend to support the upper part of the magnet 1310. Additionally, the magnet holder 1320 may be separated into two pieces and spaced apart.

The upper frame 1330 is provided to cover the arc chamber 1100 and the magnet holder 1320 and protects the arc chamber 1100, the magnet holder 1320, and the magnet 1310. This upper frame 1330 has a generally rectangular box shape with an open bottom, and terminal exposure holes are formed at the top to expose fixed terminals. Additionally, the upper frame 1330 is preferably made of an insulator, for example, resin. A fastening hole 1331 is formed at the lower edge of the upper frame 1330 to be coupled to the lower frame 2800, which will be described later. In this embodiment, there are four fastening holes, that is, a first fastening hole, a second fastening hole, and a fastening hole 1331. It illustrates that 3 fastening holes and 4th fastening holes are formed.

Figure 4 is a schematic cross-sectional view of a high-voltage relay according to the present invention.

The actuator unit 2000 controls the contact unit 1000 by an external power source. As shown in FIG. 4, the actuator unit 2000 includes a coil 2120 assembly 2100 that generates a magnetic field by an external power source, and a yoke that forms a path for the magnetic field generated by the coil 2120 assembly 2100. (2210) and the yoke ring 2220 and plate 2230, a movable core 2310 that rises or falls by the magnetic field of the coil 2120, a fixed core 2320 provided at the bottom of the movable core 2310, and a movable A return spring 2500 provided between the core 2310 and the fixed core 2320, a cylinder 2600 housing the movable core 2310, the fixed core 2320, and the return spring 2500, and a coil 2120 assembly. It includes a terminal 2700 for applying external power to 2100, and a lower frame 2800 that accommodates them and is coupled to the upper frame 1330.

The coil 2120 assembly 2100 receives an external power source and generates a magnetic field, and includes a bobbin 2110 and a coil 2120 wound around the bobbin 2110.

The bobbin 2110 has a hollow cylindrical shape, and the upper and lower edges extend to the side so that the coil 2120 wound on the side does not deviate to the top or bottom, so that it has an ‘I’ shape based on the side view.

The coil 2120 is wound around the bobbin 2110 and generates a magnetic field when external power is applied. This coil 2120 is connected to the terminal 2700, and the terminal 2700 is exposed to the outside so that external power can be applied. Meanwhile, in this embodiment, the coil 2120 may have a double coil structure including an internal coil wound around the bobbin 2110 and an external coil wound outside the internal coil. In this case, the terminal 2700 has two pairs. It is provided so that one pair per coil is connected so that external power can be applied.

The yoke 2210 is intended to form a path for the magnetic field generated by the coil 2120, and is shaped like a 'U' with the top, front, and back open to surround the sides and bottom of the coil 2120 assembly 2100. is formed This yoke 2210 is made of metal such as iron, and a coupling hole 2211 where the yoke ring 2220 is coupled is formed at the bottom.

The lower part of the yoke ring 2220 is inserted into the coupling hole 2211 formed in the lower part of the yoke 2210, and forms a magnetic field path together with the yoke 2210. In addition, the yoke ring 2220 is formed in the shape of a hollow cylinder with one side spaced apart, and its material is the same as that of the yoke 2210. The lower part of the cylinder 2600, which will be described later, is fitted inside the yoke ring 2220.

The cylinder 2600 contains a movable core 2310, a return spring 2500, and a fixed core 2320 inside. The cylinder 2600 has a hollow cylindrical shape with a closed lower part and an open upper part, and the upper edge is bent and extended to the outer surface. This cylinder 2600 may be made of metal, for example, stainless steel.

The plate 2230 is provided on the upper part of the yoke 2210 and the lower part of the arc protector 1260 and forms a magnetic field path together with the yoke 2210. This plate 2230 is made of metal, and this embodiment illustrates a plate 2230 in the shape of a square plate. Additionally, a central hole 2231 is formed in the center of the plate 2230 to allow the shaft 1273 to pass through.

The movable core 2310 is formed in a cylindrical shape and rises or falls depending on whether external power is applied to the coil 2120. For example, when external power is applied to the coil 2120, the movable core 2310 rises due to the magnetic field of the coil 2120. Additionally, if external power is not applied to the coil 2120 while the movable core 2310 is raised, the movable core 2310 descends. The upper part of the movable core 2310 is positioned so that the lower part of the shaft 1273 is in contact with it. Accordingly, when the movable core 2310 rises, the shaft 1273 also rises.

The return spring 2500 is provided between the cylinder 2600 and the movable core 2310 to return the movable core 2310. For this purpose, it is preferable that concave seating recesses are formed on the lower surface of the movable core 2310 to seat the return spring 2500.

The lower frame 2800 includes a coil 2120 assembly 2100, a yoke 2210, a yoke ring 2220, a plate 2230, a movable core 2310, a return spring 2500, a cylinder 2600, and a terminal. (2700) is stored and protected. To this end, the lower frame 2800 is formed in the form of a box with an open top, and is coupled to the upper frame 1330 by accommodating the components of the actuator unit 2000 described above. In addition, the lower frame 2800 is formed with a hook 2810 to be fastened to the fastening hole 1331 of the above-described upper frame 1330, and the above-described fastening hole 1331 includes four fastening holes. The hook 2810 also includes four hooks, that is, a first hook, a second hook, a third hook, and a fourth hook.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

1000: contact portion 1100: arc chamber
1110: ceramic chamber 1120: fixed contact
1121: first fixed contact 1122: second fixed contact
1130: cap plate 1200: moving assembly
1210: upper yoke 1230: movable contact
1240: Lower yoke 1250: Contact spring
1251: lower contact spring 1252: upper contact spring
1253: First contact spring set 1254: Second contact spring set
1260: Arc protector 1261: Base plate
1262: first fire extinguishing chamber 1263: second fire extinguishing chamber
1264: opening 1265: stopper
1270: Shaft assembly 1271: Yoke holder
1271a: first yoke holder 1271b: second yoke holder
1272: shaft body 1273: shaft
1300: Upper frame assembly 1310: Magnet
1311: first magnet 1312: second magnet
1320: Magnet holder 1330: Upper frame
1331: Fastening hole 2000: Actuator part
2100: Coil assembly 2110: Bobbin
2120: coil 2210: yoke
2211: coupling hole 2220: yoke ring
2230: plate 2231: center hole
2310: movable core 2320: fixed core
2500: return spring 2600: cylinder
2700: terminal 2800: lower frame
2810: hook

Claims (2)

A pair of fixed contact points, a movable contact contacting the pair of fixed contact points, a lower yoke provided below the movable contact point, a shaft assembly that moves the movable contact point up and down, and between the lower yoke and the shaft assembly. A contact portion including a disc spring provided in,
A high voltage relay including an actuator unit that moves the shaft assembly up and down to control contact of the movable contact point to the pair of fixed contact points.
According to paragraph 1,
The disc spring,
a lower disc spring in contact with the upper part of the shaft assembly;
an upper disk spring in contact with the movable contact point or the lower yoke, and
A high voltage relay comprising at least one set of disc springs provided between the lower disc spring and the upper disc spring and where the two disc springs are in contact with each other.