KR101202674B1 - A direct alternating magnetic contactor embedded operation-switch - Google Patents

Abstract

PURPOSE: A DC magnetic contactor with a built-in operation switch is provided to minimize the size of a device by integrating an operation switch for supplying an initial voltage with a bobbin. CONSTITUTION: A bobbin(2) is received in an inner lower side of a body and includes a coil(21) which forms electromagnetic force by the applied voltage. A fixed core(3-1) is magnetized with the electromagnetic force of the coil. A movable core(3-2) is downwardly suctioned when the fixed core is magnetized. A main contact part(5) supplies a large current to a load by a connection action by the falling of a crossbar(4).

Description

DC Magnetic Contactor with Built-in Switch {A DIRECT ALTERNATING MAGNETIC CONTACTOR EMBEDDED OPERATION-SWITCH}

The present invention relates to a direct current magnetic contactor with a built-in operation switch, and more particularly, an operation switch that is connected to the main contact by applying a initial voltage to a coil to form a cross bar lowers. Bobbin) is integrated into a direct current magnetic contactor built-in operation switch that can be miniaturized the appearance of the device.

Magnetic contactor (MC) is a kind of electromagnetic relay (electromagmetic relay) that turns current on / off with an electromagnet, and opens and closes the main contact using suction force by the electromagnet. This is used for opening / closing large currents such as main circuit current, frequent starting, stopping, and controlling of motors, etc., and classified into direct current (DC) and alternating current (AC) methods.

In more detail, using the principle of Lenz's law, induced electromotive force and induced current occur in a direction to cancel the change in the magnetic field. By supplying a low current to the auxiliary contact, an electromagnetic force is generated to excite the wire coils to magnetize, thereby opening the main contact or turning off the device. The load is opened and closed by removing the gap.

On the other hand, the DC magnetic contactor described above is different from the AC magnetic contactor in which no transient current flows, so that there is no current rise in the transient state. It is very difficult to obtain suction power.

In order to solve the above problems, as shown in FIG. 1, a DC magnetic contactor 900 having an operation switch 920 that can increase an electromagnetic force formed in a coil by applying an initial voltage to the outside of the main body 910 is separately provided and coupled. ) Is disclosed.

However, as described above, as the operation switch 910 is further configured on the outside of the main body 910, the structural complexity due to the exposure of the electrical wiring connected from the device to the operation switch 920, as well as the appearance of the device Increasing the size has caused a problem that is forced to occupy unnecessary installation space.

In addition, in order to mount the operation switch 920 to the outside of the device, the operation switch 920 must be covered by using a separate case, and thus, the unnecessary accessories are provided, and thus, the productivity of the product and the manufacturing period thereof are caused. Delays and manufacturing costs have led to closure.

An object of the present invention is to solve the above-mentioned problems, the operation switch for the initial voltage is configured integrally to the bobbin (coil body), but the switching (Switching) action when the crossbar is lowered, the operation of the operation switch In addition to preventing external exposure, it provides a direct current magnetic contactor with a built-in operation switch for smooth switching.

Another object of the present invention is to provide an elastic spring under the contact portion of the operation switch, so that the contact state of the contact portion at the time of initial voltage application can be maintained firmly, while at the same time the ON / OFF of the main contact for opening and closing the load Is to provide a built-in direct current magnetic contactor to ensure the best performance even if repeated over a long period of time.

The present invention to achieve the above object, the main body for the unification of the device; A bobbin provided with a coil formed in the lower side of the main body to form an electromagnetic force by an applied voltage and a plurality of auxiliary terminals for supplying low current to the coil; A fixed core magnetized by an electromagnetic force of the coil and a movable core suctioned downward during magnetization of the fixed core or repositioned upward when the element is disposed on the lower side and the upper side of the bobbin, respectively; A crossbar configured to simultaneously lift and move together with the movable core while being assembled above the movable core; A main contact part which is assembled to both sides of the upper end of the main body and the center of the crossbar, and forms a connection state when the crossbar descends to enable supply of a large current to the load side; And an operation switch configured to achieve an initial suction action of the movable core by applying an initial voltage to the coil in a state of being assembled and assembled on one side of the bobbin.

In addition, the operation switch is mounted on one side of the upper end of the bobbin, the switch terminal capable of connecting the electrical wiring for the initial voltage application, and in the state of being assembled in succession to the front end of the switch terminal, corresponding to the crossbar lowering And a fixed piece for switching with the working piece while being assembled in a row with the free end being movable up and down, and coupled to the tip of the auxiliary terminal, and in a state of being more seated in the center of the upper end of the bobbin. It is characterized in that it is composed of an elastic spring to push the tip upwards to maintain the connection state with the fixing piece.

In addition, the bobbin has a plate portion capable of assembling and coupling the operation switch to one side of the bobbin is extended at the upper end, while the plate portion includes a second assembly end for mounting and mounting the switch terminal, and the operation piece and the fixing piece. First and second support grooves for restraining the arrangement, and the through-hole and seating end for fixing the elastic spring is characterized in that it is further formed.

In addition, a second conduction pin protruding from the switch terminal may be further formed by soldering another coil wire having a power extracted from an intermediate portion of the coil to allow an initial voltage to be applied to the coil through the operation switch. It features.

In addition, at one portion of the working piece, the stepped portion is further refracted to prevent the flow by receiving a portion of the upper side of the elastic spring.

As apparent from the above description, the DC magnetic contactor with built-in operation switch of the present invention exhibits an effect of maximizing usability that does not occupy unnecessary installation space by achieving the built-in structure of the operation switch deviated from the existing externally exposed type structure. .

In addition, it is possible to switch immediately in response to the lifting action of the crossbar, resulting in an energy saving effect that can minimize the initial voltage consumption for increasing the initial suction power of the movable core.

In addition, by omitting unnecessary accessories due to the built-in structure of the operation switch as described above, it is a very useful invention that can not only downsize the product but also reduce the manufacturing cost and thereby greatly improve the productivity of the product.

1 is a front view showing the external structure of a direct current magnetic contactor according to the prior art.
Figure 2 is a front sectional view showing the internal structure of the built-in direct current magnetic contactor with operation switch according to the present invention.
Figure 3 is a main part perspective view showing the configuration relationship between the bobbin and the operation switch in the direct current magnetic contactor with operation switch according to the present invention.
Figure 4 is an exploded perspective view showing the assembly relationship of the operation switch in the DC magnetic contactor built-in operation switch according to the present invention.
Figures 5a and 5b is an operating state diagram showing the operation relationship of the operation switch corresponding to the crossbar lowering in the DC magnetic contactor built-in operation switch according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

Figure 2 is a front sectional view showing the internal structure of the DC switch with a built-in operation switch according to the present invention, Figure 3 is a DC magnetic contactor with a built-in operation switch according to the present invention, showing a configuration relationship between the bobbin and the operation switch 4 is an exploded perspective view showing the assembly relationship of the operation switch in the DC magnetic contactor with built-in operation switch according to the present invention, and FIGS. 5A and 5B are crossbar lowering in the DC switch with built-in operation switch according to the present invention. The operation state diagram showing the operation relationship of the operation switch corresponding to FIG.

As shown in FIG. 2, the DC switch with a built-in operation switch according to the present invention includes a main body 1 for unification of a device and a lower side of the main body 1 but with an applied voltage. The bobbin 2 is provided with a coil 21 for forming an electromagnetic force by the magnet, and the magnetization (magnetization / magnetization) by the electromagnetic force of the coil 21 in a state arranged below the bobbin 2 Movable core 3 which is suctioned downwardly at the time of magnetization of the fixed core 3-1 in the arrangement state on the upper side of the core 3-1 and the bobbin 2 or repositioned upwardly at the time of element -2) and a crossbar 4 having a simultaneous lifting and lowering operation in an assembled state above the movable core 3-1.

In addition, the main contact portion (5) for supplying external power to the load side by forming an energized state when the crossbar (4) is lowered while being assembled to the upper end both sides of the inside of the main body (1) and the center of the crossbar (4) ) And an operation switch 6 in which an initial voltage is applied to the coil 21 in a state in which the bobbin 2 is cooperatively assembled to smooth the initial suction of the movable core 3-1. Include.

The main body 1 forms a lower portion of the exterior of the device, and has a lower case 11 provided with an inner space for accommodating the fixed core 3-1 including the bobbin 2 and the movable core 3-2. And an upper case 12 having an upper portion of the exterior of the device, and having an inner space for accommodating and assembling the crossbar 4 and the main contact portion 5.

The bobbin 2 is for the suction (falling) action of the movable core 3-2 using the fixed core 3-1, which is excited by the formation of the electromagnetic force of the coil 21 by the application of low current. As shown in the figure, the plate part 2-1, which can be assembled to the operation switch 6 at one side, is extended to the upper end, and the coil is formed on the upper surface of one end of the plate part 2-1. A plurality of auxiliary terminals 22 and 22 'are provided and assembled to allow a low current to be supplied to the coil 21.

In the plate portion 2-1, the first assembling ends 2-11, which are assembled by mounting the auxiliary terminals 22 and 22 ', respectively, are formed on both upper surfaces of one end, and the auxiliary terminal 22 The insertion grooves 2-11a, which can partially accommodate one end of the long axis of the 22 ', are further inwardly along the longitudinal direction.

In addition, a second assembling end (2-12) for mounting and assembling the switch terminal of the operation switch (6), which will be described later, is formed on the upper surface of the other end, and the first for restraining the operation switch (6) The support grooves 2-13 and the second support grooves 2-14 are spaced apart at one side of the central portion, respectively, and the first and second support grooves 2-13 and 2-14 will also be described later. The elastic springs of the operation switch 6 can be fixedly arranged through holes (2-15) and seating end (2-16) is further formed.

Meanwhile, each of the auxiliary terminals 22 and 22 ′ preferably has a first conducting pin 211 protruding from the one end of the coil 21 to form an electrical connection.

The movable core 3-1 and the fixed core 3-2 interact with each other under the influence of an electromagnetic force caused by a current flowing along the coil 21, and are connected and assembled to an upper end of the movable core 3-1. It is preferable to laminate a plurality of metal thin plates for the purpose of minimizing the Eddy Current phenomenon by connecting the main contact portion 5 by the elevating action of (4).

The crossbar 4 is for controlling the connection of the main contact portion 5 according to simultaneous lowering during the suction action of the movable core 3-2, and the head for attaching and coupling the movable core 3-2. It is preferable that the portion 4-1 is expanded on the lower end portion.

The main contact portion 5 is for enabling the supply of a large current such as the main circuit current to the load side through a connecting action by the crossbar 4 descending, and is provided in each of the inner ends of the upper case 12, respectively, A plurality of main tunnels 51 and 51 'which are connected to the electrical wiring for supplying external power to the side and the crossbar 4 are simultaneously lowered, and both ends thereof are respectively connected to the main tunnels 51 and 51'. It is preferable that it is comprised with the contactor 52 to connect.

The operation switch 6 applies initial voltage to the coil 21 in a state in which the operation switch 6 is cooperatively assembled to one side of the plate portion 2-1 of the bobbin 2, so that the initial suction of the movable core 3-2 is performed. In order to facilitate the operation, as shown in Figure 4, by mounting and seated in the second assembly end (2-12) provided on one side of the plate portion 2-1 to connect the electrical wiring for the initial voltage application The switch bar 61 and the crossbar (1) are assembled in series with the front end of the switch terminal 61, and a part of the first support groove 2-13 of the plate portion 2-1 is fitted. 4) An operating piece 62 is formed in which the free end is movable up and down in response to the lowering.

In addition, it is fixed to switch to the working piece 62 in a state of preventing flow as it is assembled to the front end of the auxiliary terminal 22 and fitted into the second support groove (2-14) of the plate portion (2-1). The free end portion of the working piece 62 is upwardly received in the piece 63 and the through hole 2-15 of the plate portion 2-1 and mounted on the seating end 2-16. It includes an elastic spring 64 to exert elasticity so that the state of the connection with the fixing piece 63 can be maintained by pushing.

In addition, the switch terminal 61 is soldered to another coil wire having a power source extracted from an intermediate portion of the coil 21 to be electrically connected to the coil 21 through the operation switch 6. A second conduction pin 611 that protrudes the initial voltage is formed.

In addition, the working piece 62 has a refractive type stepped portion 62-1 formed at one portion to prevent the flow by partially receiving the upper side of the elastic spring 64, and the fixing piece ( The first contact protrusion 621 in contact with 63 is formed on the upper surface of the free tip.

In addition, the fixing piece 63 is provided with a second contact protrusion 631 protruding from one end of the lower surface of the fixing piece 63 so that the energized state is smoothly brought into contact with the first contact protrusion 621.

Reference numeral (b-1) is a terminal bolt used to connect electrical wiring to the main terminal and the auxiliary terminal, and (b-2) is a fastening bolt required to assemble the fixing piece and the working piece. , (h) is a bolt hole formed in the main terminal, the auxiliary terminal and the plate for screwing the terminal bolt, (s) is a return spring for raising the movable core to its original position when the electromagnetic force of the device .

Referring to the operation of the built-in operation switch-type direct current magnetic contactor (A) according to the present invention having the above configuration as follows.

First, electrical wiring for supplying a large current is connected to each main terminal 51 of the main contact portion 5, while suction of the movable core 3-2 is sucked into the auxiliary terminals 22 and 22 ′. The electrical wiring for low current supply is connected so that an electromagnetic force for the action can be formed in the coil 21 of the bobbin 2.

At this time, according to the elasticity of the elastic spring 64, the operation piece 62 of the operation switch 6 maintains a fully in contact with the fixed piece 63.

In this state, in order to achieve the energized state of the main contact portion 5 to which a large current can be supplied to the load side, the coil 21 of the bobbin 2 is applied by initially applying an initial voltage to the operation switch 6. To form an electromagnetic force.

As a result, a suction action is performed in which the movable core 3-2 is lowered by the fixed core 3-1 magnetized by the electromagnetic force of the coil 21, and at the same time, The crossbars 4 assembled on the upper side are lowered together.

In addition, as shown in Figure 5a, the contact 52 of the main contact portion 5 is provided with the crossbar (4) is also lowered together, the both ends of each of the main terminals (51, 51 '). Due to the connection, a large current is supplied to the load side due to the energization of the main contact portion 5 and the maintenance of the energization state.

Here, the front end of the coil 21 connected to the switch terminal 61 of the operation switch 6 has evicted power from an intermediate portion without passing through the coil 21 as a whole, that is, the switch terminal 61. By the coil wire connected to the second conducting pin 611 of the), while the power consumption for initial voltage application can be reduced while the suction action of the movable core (3-2) for the lowering of the crossbar (4) It is possible to smoothly.

On the other hand, the low current supplied through the auxiliary terminal 22 is maintained by the flow to the other auxiliary terminal 22 'through the coil 21 of the bobbin 2, the movable core (3) The suction action of -2) is continued, so that the energized state of the main contact portion 5 can be maintained by lowering the crossbar 4, and thus power supply to the load side can be continued.

Subsequently, as shown in FIG. 5B, when the crossbar 4 is further lowered by a predetermined distance, the head part 4-1 interferes with the operation piece 62 of the operation switch 6. The lower surface of the head portion 4-1 presses the free end portion of the operation piece 62 downward, thereby causing the first contact protrusion 621 of the operation piece 62 to fix the fixing piece 63. The contact is released from the second contact protrusion 631 of) and the initial voltage applicator through the operation switch 6 is terminated.

Therefore, in discharging the initial power through the operation switch 6, by minimizing unnecessary power consumption by not passing through the entire coil 21, the present invention due to achieving the built-in structure of the operation switch 6 In addition to reducing the size of the magnetic contactor (A) according to the switching of the operation switch 6 immediately corresponding to the lifting action of the crossbar (4) is excellent.

As described above, the present invention has been described in detail by using a preferred embodiment, but the scope of the present invention is not limited to the specific embodiment, it should be interpreted by the appended claims. In addition, those of ordinary skill in the art that various modifications can be made without departing from the scope and spirit of the present invention.

A: Magnetic contactor, 1: main body, 2: bobbin
2-1: plate part, 2-11: first assembly end, 2-11a: insertion groove
2-12: 2nd assembly stage, 2-13: 1st support groove, 2-14: 2nd support groove
2-15: through hole, 2-16: seating end, 3-1: fixed core
3-2: movable core, 4: crossbar, 4-1: head part
5: main contact part 6: operation switch 11: lower case
12: upper case, 21: coil, 22, 22 ': auxiliary terminal
51, 51 ': main terminal, 52: contactor, 61: switch terminal
62: working piece, 62-1: stepped portion, 63: fixed piece
64: elastic spring, 211: first conducting pin, 611: second conducting pin
621: first contact projection, 631: second contact projection

Claims (5)

A main body for the unification of the apparatus; A bobbin provided with a coil formed in the lower side of the main body to form an electromagnetic force by an applied voltage and a plurality of auxiliary terminals for supplying low current to the coil; A fixed core magnetized by an electromagnetic force of the coil and a movable core suctioned downward during magnetization of the fixed core or repositioned upward when the element is disposed on the lower side and the upper side of the bobbin, respectively; A crossbar configured to simultaneously lift and move together with the movable core while being assembled above the movable core; A main contact part which is assembled to both sides of the upper end of the main body and the center of the crossbar, and forms a connection state when the crossbar descends to enable supply of a large current to the load side; And an operation switch configured to achieve an initial suction action of the movable core by applying an initial voltage to the coil in a state of being assembled and assembled on one side of the bobbin.
The operation switch includes a switch terminal capable of connecting electrical wiring for initial voltage application by being seated and assembled on the upper end of the bobbin, and a free end corresponding to the crossbar descending in a state of being assembled to the front end of the switch terminal. A working piece which is movable up and down, a fixed piece for switching with the working piece while being assembled to the front end of the auxiliary terminal, and pushed the free end of the working piece upward while being more seated in the upper center of the bobbin. DC magnetic contactor with a built-in operation switch, characterized in that consisting of an elastic spring to maintain the connection state with the fixing piece.
delete The method of claim 1,
The bobbin, while the plate portion capable of assembling and coupling the operation switch to one side is expanded on the top,
The plate portion has a second assembly end for mounting and assembling the switch terminal, a first support groove and a second support groove for restraining the operating piece and the fixed piece, and a through hole for fixedly arranging the elastic spring. And a seating end is further provided with a built-in direct current magnetic contactor with an operation switch.
The method of claim 1,
In the switch terminal, a second conduction pin is further protruded to solder another coil wire from which power is removed from the middle portion of the coil, and to apply an initial voltage to the coil through the operation switch. DC magnetic contactor with built-in operation switch.
The method of claim 1,
Wherein one part of the operating piece, the stepped portion is further refracted by the flow to prevent the flow by receiving a portion of the upper side of the elastic spring built-in direct current magnetic contactor.

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