Electromagnetic switch structure of relay device

Abstract

To provide an electromagnetic switch structure of a relay device capable of controlling opening and closing of a changeover switch assembly.SOLUTION: An electromagnetic switch structure of a relay device includes a movable iron core 300 that is mounted inside a relay device 100, is adjacent to a coil set 200, and is detachably inserted into the coil set, and includes a changeover switch assembly, a lower magnetic motion assembly, and an upper magnetic motion assembly 3. The changeover switch assembly is inserted into one end of the coil set corresponding to the movable iron core, and is located below the coil set. The lower magnetic motion assembly is provided between the changeover switch assembly and the movable iron core and is connected to the changeover switch assembly. The upper magnetic motion assembly is fitted to the end of the movable iron core, and a space is provided between the lower magnetic motion assembly and the upper magnetic motion assembly, and a magnetic principle acts between the lower magnetic motion assembly and the upper magnetic motion assembly.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an electromagnetic switch structure for a relay device, and more particularly to an electromagnetic switch structure for a relay device that is applied in the field of relay devices. [Background technology]

[0002] The relay device switches on and off using the principle of magnetic attraction / repulsion between two magnets. As shown in Figure 9, two magnets 4 are placed vertically at a distance from each other, and a switch 5 is placed between the two magnets 4. When the upper magnet 4 is moved away from the lower magnet 4, the switch 5 is not affected by the magnetism and does not operate. When the upper magnet 4 is moved closer to the lower magnet 4, the switch 5 is affected by the magnetism and opens (the solid arrow indicates the direction in which the upper magnet 4 moves, and the dotted arrow indicates the direction in which the switch 5 opens). However, when such a relay device is exposed to the magnetic influence of the upper and lower magnets 4 for a long period of time, the switch 5, which is made of metal, is easily magnetized and eventually becomes attracted to the upper and lower magnets 4 and stops operating, or both ends of the switch 5 are magnetically attracted to the upper and lower magnets 4 for a long period of time and become deformed, causing fatigue in the metal parts of the switch 5 and ultimately making it unable to close completely. Summary of the Invention [Problem to be solved by the invention]

[0003] The main object of the present invention is to provide an electromagnetic switch structure for a relay device in which, when the coil set is energized or de-energized, the movable core moves up and down, and the upper magnetic assembly also moves accordingly, and when the upper magnetic assembly moves, the distance between it and the lower magnetic assembly changes, changing the magnetic pole acting force between the upper magnetic assembly and the lower magnetic assembly, thereby controlling the opening and closing of a change-over switch assembly. [Means for solving the problem]

[0004] In order to solve the above problems, according to a first aspect of the present invention, there is provided an electromagnetic switch structure for a relay device, which is attached inside the relay device and adjacent to a coil set, has a movable core that is detachably inserted into the coil set, and includes a change-over switch assembly, a lower magnetic assembly, and an upper magnetic assembly, wherein the change-over switch assembly is inserted into one end of the coil set corresponding to the movable core and is located below the coil set, the lower magnetic assembly is provided between the change-over switch assembly and the movable core and is connected to the change-over switch assembly, and the upper magnetic assembly The assembly is fitted onto the end of the movable iron core, with a gap between it and the lower magnetic assembly, and the principle of magnetism acts between the lower magnetic assembly and the upper magnetic assembly, and when the coil set is energized or de-energized, the movable iron core moves up and down, causing the upper magnetic assembly to displace accordingly, and when the upper magnetic assembly displaces, the distance between it and the lower magnetic assembly changes, changing the magnetic pole acting force between the upper magnetic assembly and the lower magnetic assembly and controlling the opening and closing of the change-over switch assembly. [Effects of the Invention]

[0005] In the electromagnetic switch structure of the relay device according to the present invention, when the coil set is energized or de-energized, the movable core moves up and down, and the upper magnetic assembly is displaced accordingly. When the upper magnetic assembly is displaced, the distance between it and the lower magnetic assembly changes, changing the magnetic pole acting force between the upper magnetic assembly and the lower magnetic assembly, thereby controlling the opening and closing of the change-over switch assembly. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a perspective view showing an electromagnetic switch structure of a relay device according to a first embodiment of the present invention; [Figure 2] 1 is an exploded perspective view showing an electromagnetic switch structure of a relay device according to a first embodiment of the present invention. [Figure 3] FIG. 3 is an exploded perspective view of a detail of FIG. 2. [Figure 4] 3 is a perspective view of the changeover switch assembly of FIG. 2 from another angle. [Figure 5] This is a cross-sectional view taken along line VV in Figure 1, showing a state in which magnetic repulsion occurs between the upper magnetic assembly and the lower magnetic assembly, current is not yet applied to the coil set, the movable iron core has not yet moved, the lower magnetic assembly pushes the elastic piece to store a spring force, and the elastic piece is in contact with the fixed contact point. [Figure 6] FIG. 6 is a cross-sectional view showing a state in which, after the coil set in FIG. 5 is energized, the movable iron core and the upper magnetic assembly move to control the operation of the changeover switch assembly, and the resilient piece of the changeover switch returns to its original position due to its elastic restoring force and moves away from the fixed contact point. [Figure 7] FIG. 10 is a cross-sectional view showing a state in which magnetic repulsion occurs between the upper and lower magnetic assemblies of the electromagnetic switch structure of the relay device according to the second embodiment of the present invention, the coil set is not yet energized, the movable iron core has not yet moved, the lower magnetic assembly pushes the resilient piece to store the spring force, and the resilient piece moves away from the fixed contact point. [Figure 8] FIG. 8 is a cross-sectional view showing a state in which, after the coil set in FIG. 7 is energized, the movable iron core and the upper magnetic assembly move to control the operation of the change-over switch assembly, and the resilient piece of the change-over switch returns to its original position due to its elastic restoring force and contacts the fixed contact point. [Figure 9] FIG. 10 is an explanatory diagram showing the inside of a conventional relay device. DETAILED DESCRIPTION OF THE INVENTION

[0007] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same reference numerals denote the same or similar components.

[0008] Please refer to Figures 1 to 8. As shown in Figures 1 to 8, an electromagnetic switch structure of a relay device according to one embodiment of the present invention has a movable iron core 300 that is attached inside a relay device 100, is adjacent to a coil set 200, and is detachably inserted into the coil set 200. The present invention has two main types of embodiments (divided into magnetic attraction and magnetic repulsion).

[0009] (First embodiment) 1 to 6. As shown in FIGS. 1 to 6, the electromagnetic switch structure of a relay device according to the first embodiment of the present invention includes a changeover switch assembly 1, a lower magnetic assembly 2, and an upper magnetic assembly 3. The changeover switch assembly 1 is disposed inside the relay device 100 and is inserted into one end of the coil set 200 corresponding to the movable iron core 300, and is located below the coil set 200. The lower magnetic assembly 2 is disposed between the changeover switch assembly 1 and the movable iron core 300 and is connected to the changeover switch assembly 1. The upper magnetic assembly 3 is fitted onto the end of the movable iron core 300 and is spaced apart from the lower magnetic assembly 2. The principle of magnetism operates between the lower magnetic assembly 2 and the upper magnetic assembly 3. When the coil set 200 is energized or de-energized, the movable iron core 300 moves up and down, and the upper magnetic assembly 3 is also displaced accordingly. When the upper magnetic assembly 3 is displaced, the distance between it and the lower magnetic assembly 2 changes, changing the magnetic pole acting force between the upper magnetic assembly 3 and the lower magnetic assembly 2, thereby controlling the opening and closing of the change-over switch assembly 1.

[0010] The relay device 100 includes a change-over switch assembly 1, a lower magnetic assembly 2, and an upper magnetic assembly 3. Utilizing the principle of an electromagnetic field generated by the passage of current between the coil set 200 and the movable iron core 300, the upper magnetic assembly 3 is moved to change the distance between the upper magnetic assembly 3 and the lower magnetic assembly 2, causing the magnetic repulsive force to change according to the distance, controlling the change-over switch assembly 1 to switch between open and closed states. The change-over switch assembly 1 of this embodiment is installed below the lower magnetic assembly 2, and the magnetic force between the upper magnetic assembly 3 and the lower magnetic assembly 2 does not interfere with other components. This allows the lower magnetic assembly 2 to reliably operate the change-over switch assembly 1, and the change-over switch assembly 1 is not affected by the magnetic forces of magnets above and below it, as in the prior art shown in FIG. 9.

[0011] In this embodiment, when the upper magnetic assembly 3 and the lower magnetic assembly 2 are in the magnetic repulsion mode, the change-over switch assembly 1 includes a base 11, a first terminal connector 12, a second terminal connector 13, and a resilient piece 14. The base 11 is mounted inside the relay device 100 and abuts against the bottom surface of the coil set 200. The bottom surface of the base 11 has an inwardly recessed position constraint groove 110. The first terminal connector 12 and the second terminal connector 13 are mounted on both ends of the position constraint groove 110, respectively. The resilient piece 14 has one end electrically connected to the first terminal connector 12 and a movable contact point 141 at the other end that movably contacts the position contact point 131 of the second terminal connector 13. In two embodiments, the position contact points 131 of the second terminal connector 13 are located at both elastically swinging ends of the resilient piece 14. See FIGS. 5 and 6. As shown in Figures 5 and 6, when the upper magnetic assembly 3 and the lower magnetic assembly 2 are in magnetic repulsion mode, one end of the fixed contact point 131 of the second terminal connector 13 is located below the elastic piece 14. Therefore, when the coil set 200 is not yet energized, the movable iron core 300 does not move. At this time, the distance between the upper magnetic assembly 3 and the lower magnetic assembly 2 is the shortest, and the magnetic repulsion force obtained is the largest. Therefore, when the lower magnetic assembly 2 presses the elastic piece 14, one end of the movable contact point 141 of the elastic piece 14 is elastically deformed and comes into contact with the fixed contact point 131 of the second terminal connector 13 due to the biasing force, thereby entering a closed state (see Figure 5).

[0012] See Fig. 6. As shown in Fig. 6, when a current is applied to the coil set 200, the coil set 200 generates an electromagnetic field, causing the movable iron core 300 to move upward, and the upper magnetic assembly 3 moves along with it. As the upper magnetic assembly 3 moves, the distance between it and the lower magnetic assembly 2 increases, and as the distance increases, the magnetic repulsive force weakens. When the biasing force of the resilient piece 14 becomes greater than the repulsive force, one end of the movable contact point 141 on the resilient piece 14 returns to its original position due to elastic restoring force, and the movable contact point 141 is released from contact with the fixed contact point 131 and enters an open state (see Fig. 6).

[0013] When the upper magnetic assembly 3 and the lower magnetic assembly 2 are in a repulsive state, as shown in Figures 5 and 6, in addition to the end of the second terminal connector 13 having the positioning contact point 131 being located below the resilient piece 14, different types of relay devices 100 also have the end of the second terminal connector 13 having the positioning contact point 131 being located above the resilient piece 14.

[0014] (Second embodiment) 7 and 8, the operation of the elastic piece 14 in the second embodiment is opposite to that in the first embodiment. Simply put, when the coil set 200 is not yet energized and the movable iron core 300 and the upper magnetic assembly 3 have not yet moved, the distance between the upper magnetic assembly 3 and the lower magnetic assembly 2 is the shortest and the mutual repulsive force is the largest, so that one end of the elastic piece 14 having the movable contact point 141 stores a deformation biasing force and moves away from the fixed contact point 131 of the second terminal connector 13 (see FIG. 7). Conversely, when the coil set 200 is energized and the movable iron core 300 displaces the upper magnetic assembly 3 upward, the distance between the upper magnetic assembly 3 and the lower magnetic assembly 2 increases, the repulsive force decreases, and the spring force of the resilient piece 14 becomes greater than the repulsive force, after which the end of the resilient piece 14 having the movable contact point 141 elastically recovers and contacts the fixed contact point 131 of the second terminal connector 13 (see Figure 8), so that the relay device 100 can be controlled in a different manner.

[0015] Please refer to Figures 3 to 6. As can be seen from the above-mentioned operational description of the lower magnetic assembly 2 shown in Figures 3 to 6, the lower magnetic assembly 2 includes a lower magnet 21 and a lower bracket 22. Both ends of the lower bracket 22 are provided with recessed mounting grooves 221 and bumps 222. The lower magnet 21 is mounted in the mounting grooves 221. The upper magnetic assembly 3 includes an upper magnet 31 and a movable base 32. The movable base 32 is fitted onto the end of the movable iron core 300. The movable base 32 has an assembly groove 321 recessed on one side corresponding to the lower magnetic assembly 2. The upper magnet 31 is mounted in the assembly groove 321. When the coil set 200 is not yet energized and the movable iron core 300 is not yet moved, the distance between the upper magnet 31 and the lower magnet 21 is the shortest and the attractive-repulsive force is the greatest, so that in a mutually repulsive state, the bump 222 of the lower bracket 22 presses the elastic piece 14, causing the elastic piece 14 to deform and store a biasing force. In the attraction mode, when the bump 222 is connected to the elastic piece 14 and the lower bracket 22 is operated, the elastic piece 14 is attracted and deformed, storing a biasing force. On the other hand, when the coil set 200 starts to be energized, the movable iron core 300 moves, and then the movable iron core 300 moves the entire upper magnetic assembly 3 in conjunction, moving the upper magnet 31 of the upper magnetic assembly 3 away from the lower magnet 21. After the distance increases, even if the upper magnet 31 and the lower magnet 21 are in a repulsive or attractive mode, the force decreases according to the distance, and the elastic force stored in the elastic piece 14 is greater than the attractive or repulsive force, so the elastic piece 14 itself elastically returns to its original position, and the switching operation can be performed.

[0016] 2, 3, and 5. As shown in FIGS. 2, 3, and 5, a signal terminal 6 is provided inside one side of the relay 100 where the coil set 200 is disposed. The signal terminal 6 is electrically connected to the first terminal connector 12 and the second terminal connector 13 at one end, and is connected to an external detection device (not shown) at the other end. The main function of the signal terminal 6 is to detect continuity or non-continuity between the first terminal connector 12 and the second terminal connector 13 using the detection device. During detection, the signal terminal 6 is used as a signal transmission medium between the detection device and the relay 100. During detection, it is possible to clearly determine whether the relay 100 is in a conducting or non-conducting state, or whether the resilient piece 14 between the first terminal connector 12 and the second terminal connector 13 is operating normally, thereby improving the production yield of the relay 100. [Explanation of symbols]

[0017] (The present invention) 1. Transfer switch assembly 2 Lower magnetic assembly 3 Upper magnetic assembly 6 Signal terminals 11. Base 12 First terminal connector 13 Second Terminal Connector 14 bullet fragments 21 Lower Magnet 22 Lower bracket 31 Upper magnet 32 Movable seat 100 Relay Device 110 Position restraint groove 131 Stereotactic contact point 141 Movable contact point 200 coil set 221 Mounting groove 222 Bump 222A Upper protrusion 222B Lower protrusion 222C connection 300 moving core 321 Assembly groove (Prior Art) 4. Magnets 5 Switch

Claims

1. An electromagnetic switch structure for a relay device, the electromagnetic switch structure having a movable core that is attached inside the relay device and adjacent to a coil set, and that is detachably inserted into the coil set, the electromagnetic switch structure comprising a changeover switch assembly, a lower magnetic assembly, and an upper magnetic assembly, the changeover switch assembly is inserted into one end of the coil set corresponding to the movable iron core and is located below the coil set; the lower magnetic assembly is provided between the changeover switch assembly and the movable iron core and is connected to the changeover switch assembly; the upper magnetic assembly is fitted to an end of the movable iron core, and a gap is provided between the upper magnetic assembly and the lower magnetic assembly, and a magnetic principle acts between the lower magnetic assembly and the upper magnetic assembly; When the coil set is energized or de-energized, the movable core moves up and down, and the upper magnetic assembly is displaced accordingly. When the upper magnetic assembly is displaced, the distance between the upper magnetic assembly and the lower magnetic assembly changes, changing the magnetic pole acting force between the upper magnetic assembly and the lower magnetic assembly, thereby controlling the opening and closing of the change-over switch assembly.

2. The changeover switch assembly includes a base, a first terminal connector, a second terminal connector, and a spring. the base is attached to the inside of the relay device and abuts against the bottom surface of the coil set, the bottom surface of the base has a position restraint groove recessed inward, the first terminal connector and the second terminal connector are attached to both ends of the position restraint groove, the elastic piece has one end electrically connected to the first terminal connector and has a movable contact point at the other end that movably contacts a position contact point of the second terminal connector, the position contact point being located below the movable contact point, When the coil set is not energized and the movable iron core is not moving upward, a magnetic repulsive force is generated between the upper magnetic assembly and the lower magnetic assembly. When this repulsive force becomes greater than the elastic recovery force of the elastic piece, the lower magnetic assembly pushes a part of the elastic piece, and one end of the movable contact point provided on the elastic piece contacts the fixed contact point, deforming it and storing an urging force.

2. The electromagnetic switch structure of a relay device according to claim 1, wherein when the coil set starts to be energized, the movable iron core moves upward, and then the distance between the upper magnetic assembly and the lower magnetic assembly increases, and the magnetic repulsive force decreases as the distance increases, and when the magnetic repulsive force is smaller than the elastic restoring force of the spring piece, the contact between one end of the movable contact point of the spring piece and the fixed contact point is released.

3. The changeover switch assembly includes a base, a first terminal connector, a second terminal connector, and a spring. the base is attached to the inside of the relay device and abuts against the bottom surface of the coil set, the bottom surface of the base has a position restraint groove recessed inward, the first terminal connector and the second terminal connector are attached to both ends of the position restraint groove, the elastic piece has one end electrically connected to the first terminal connector and has a movable contact point at the other end that movably contacts a position contact point of the second terminal connector, the position contact point being located above the movable contact point, When the coil set is not energized and the movable iron core is not moving upward, a magnetic repulsive force is generated between the upper magnetic assembly and the lower magnetic assembly. When this repulsive force becomes greater than the elastic recovery force of the elastic piece, the lower magnetic assembly pushes a part of the elastic piece, and one end of the movable contact point provided on the elastic piece contacts the fixed contact point, deforming it and storing an urging force.

2. The electromagnetic switch structure of a relay device according to claim 1, wherein when the coil set starts to be energized, the movable iron core moves upward, and then the distance between the upper magnetic assembly and the lower magnetic assembly increases, and the magnetic repulsive force decreases as the distance increases, and when the magnetic repulsive force is smaller than the elastic restoring force of the spring piece, the contact between one end of the movable contact point of the spring piece and the fixed contact point is released.

4. the lower magnetic assembly includes a lower magnet and a lower bracket; The lower bracket has recessed mounting grooves and bumps at both ends. The lower magnet is mounted in the mounting groove, The bump is in contact with the spring fragment under normal conditions, and the upper magnetic assembly includes an upper magnet and a movable seat.

3. The electromagnetic switch structure of claim 2, wherein the movable seat is fitted onto an end of the movable core, the movable seat having a recessed assembly groove on one side corresponding to the lower magnetic assembly, the upper magnet being mounted in the assembly groove, and when the coil set is energized to form an electromagnetic field, the movable core moves upward, and the movable seat moves along with it, moving the upper magnet away from the lower magnet as the movable seat moves, and as the distance increases, the magnetic repulsive force decreases.

5. the lower magnetic assembly includes a lower magnet and a lower bracket; The lower bracket has recessed mounting grooves and bumps at both ends. The lower magnet is mounted in the mounting groove, The bumps are in contact with the elastic fragments under normal conditions, the upper magnetic assembly includes an upper magnet and a movable seat; 4. The electromagnetic switch structure of claim 3, wherein the movable seat is fitted onto an end of the movable core, the movable seat having a recessed assembly groove on one side corresponding to the lower magnetic assembly, the upper magnet being mounted in the assembly groove, and when the coil set is energized to form an electromagnetic field, the movable core moves upward, causing the movable seat to move together therewith, moving the upper magnet away from the lower magnet as the movable seat moves, and as the distance increases, the magnetic repulsive force decreases.

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