KR101362901B1 - Latch relay - Google Patents

Abstract

The present invention relates to a latch relay capable of improving stability of point contact as a contact point part is stably in contact. The latch relay can be easily maintained or tested as an actuator is stably operated although a cover is not assembled. The actuator and a movable contact point are operated at the same time, and concurrent control of two contact points limited in a standby power blocking device is possible. The latch relay also can reduce manufacturing costs by being easily manufactured and assembled by having a simple structure.

Description

Latch relay

The present invention relates to a latch relay, and more particularly, it is possible to open and close a short DC pulse signal, to maintain and disengage the contact state by using an electromagnet and a permanent magnet, and to a latch relay mainly used in a standby power cut-off device. It is about.

Various electric elements are used according to the development of electric and electronic technology, and one of them is a relay.

In general, a relay is a means of controlling on / off of a large current with a small current, and is widely used throughout the industry, and a coil bobbin that generates a magnetic field in response to the application of a current, and is shaken by the magnetic force of the coil bobbin. It consists of a movable contact and a fixed contact which is installed opposite to the movable contact and switched on and off.

As a technique related to such a relay, there are various things including Patent Document 1.

Such a relay is usually a relay coil for operating the power when the power is turned on and off, a lever of a mold that connects the contact point to be brought into contact with the fixed contact when the power is turned on, and even after the power is turned off. Moving core at the bottom of the coil to maintain the state As the permanent magnet is placed on both sides of the moving bobbin, the pole is pulled and the pole is a relay attached to the yoke in the pushing direction.

However, in the conventional relay, the constant excitation type that maintains the state in which the current is applied to the coil is mainstream, and continuous power consumption is required to keep the contact in the 'ON' state, and the standby power is '0' standby. In power interrupters, there was a problem with an inadequate relay configuration.

Patent Document 2 developed by the present applicant as a technique developed to improve this disadvantage.

Patent document 2 has a support means having a bottom plate, a housing means having a case covering the support means and an opening and closing contact means built in the housing means, the opening and closing contact means is fixed on the bottom surface and the coil is wound on both ends A bobbin in which a first yoke and a second yoke are inserted and a coil cap surrounding the coil is mounted on an upper portion thereof; One side of the bobbin, the main contact portion having a main contact movable plate fixed on the bottom surface, the main contact holder and one end is connected to the main contact movable platform and the other end of the main contact plate spring extending on one side of the main contact holder And, on the other side of the bobbin has an auxiliary contact movable plate which is fixed on the bottom surface, the auxiliary contact holder and one end is connected to the auxiliary contact movable platform and the other end extends on one side of the auxiliary contact fixing spring An auxiliary contact unit connected to a normal remote control device and feeding back an opening / closing state of the main contact unit; And a driving unit having an actuator arranged on the upper side of the bobbin and rotating by an exciting current applied to the coil to open and close the main contact portion and the auxiliary contact portion.

However, such a conventional relay, as described above, forms a rotating protrusion on the center upper end of the bobbin cap installed on the upper portion of the electronic driving unit (hereinafter referred to as "electronic driving unit") including the first, second yoke, The rotating projection is seated in the groove of the actuator, and the magnetizing force is generated by the exciting current applied to the contact portion, and the actuator rotates to open and close the main contact portion among the contacts constituting the electronic drive portion. The actuator that rotates by the flow of the bobbin cap does not come into close contact with the first yoke and the second yoke, and there is a problem that the contact portion cannot be stably contacted due to incomplete adhesion.

In addition, the conventional relay is configured with an actuator that rotates in the bobbin cap center of the upper part of the electronic driving unit, which can be determined by the assembly of the case smooth rotation operation and position of the actuator by the case inner support. That is, there is a problem that the operation test is difficult before the finished product assembled the case due to the problem that the yoke part is separated without the upper case. This problem was difficult to find the cause of the malfunction in the manufacturing process was not easy to test, which delayed the fast inspection of the malfunctioning relay, which leads to a decrease in productivity. There was also a problem such as trying to replace.

Korea Utility Model Registration No. 0292167 Republic of Korea Patent Registration No. 0837296

The present invention has been made to solve the above problems, and an object of the present invention is to provide a latch relay in which the contact portion is firmly contacted to increase the stability of the contact contact.

In addition, an object of the present invention is to provide a latch relay that can be operated stably even in the state that the cover is not assembled, so that the product test and maintenance of the product in the manufacturing process can be easily performed.

Furthermore, an object of the present invention is to provide a latch relay capable of simultaneously driving an actuator and a movable contact, and simultaneously controlling two contacts (positive poles) limited by a standby power cut-off device or the like.

In addition, an object of the present invention is to provide a latch relay that is simple in structure and easy to manufacture and assemble.

A latch relay according to the present invention for achieving the above object includes (A) a base having at least a guide support wall; (B) an electronic drive unit including a bobbin installed on the base and having a plurality of coil terminals connected to the coil wound thereon, and two yokes installed through the bobbin; (C) a movable contact installed on one side of the electronic driving unit, connected to an external device, and in contact with the following fixed contact point; (D) a fixed contact installed on one side of the movable contact, connected to an external device, and in contact with the movable contact; (E) an actuator having an armature for transmitting the magnetic force of the permanent magnet so as to be pulled by the yoke of the electronic drive unit, the actuator rotates about the rotation axis; (F) a handle which moves horizontally by the rotation of the actuator to move the movable contact and a housing which covers the upper portion of the base.

Actuator guides supported by guide supporting walls formed on the base may be installed at both sides of the actuator, and the actuator guide may be formed with shaft holes through which rotation shafts formed on the actuator are rotatably fitted.

In addition, the actuator guide is further formed with a sliding long hole for guiding the handle to move horizontally, the sliding shaft is formed on both sides of the handle to move in the state fitted in the sliding long hole.

Coupling protrusions are formed on inner surfaces of the actuator guides facing each other so that two actuator guides may be coupled with the actuators interposed therebetween.

The shaft hole is preferably formed in the form of a long hole up and down to allow the actuator to flow up and down.

Key grooves are formed on the upper surface of the handle so that the tool can be fitted when the handle is manually operated, and a through hole through which the tool fitted to the key groove passes may be formed in a portion facing the key groove of the housing.

The movable contact and the fixed contact are two pairs, the two movable contacts can be operated simultaneously by the drive of the actuator.

An insulating wall is formed at a portion of the base that faces the movable contact and the fixed contact pair to prevent a short circuit between the two contacts.

As described above, the latch relay according to the present invention has the effect that the movable contact is moved by the handle which is horizontally moved to contact the fixed contact, so that the contact between the movable contact and the fixed contact is tight, thereby preventing contact failure of the contact. There is.

In addition, the present invention is configured so that the drive of the actuator can be rotated about the axis of rotation, the actuator guide and the guide support wall is supported so that the actuator, as well as the handle is not separated from the electronic drive unit even in the state of removing the housing for the test The actuator can be driven manually, making it easy to pre-check the relay.

In addition, the latch relay of the present invention is not only easy to manufacture because the overall structure is simple, it is also possible to reduce the material or time required for the production can be provided at a lower cost.

1 is an exploded perspective view of a latch relay according to the present invention;
2 is an exploded perspective view illustrating only a part of the latch relay according to the present invention;
Figure 3 is an exploded perspective view of the housing is separated
4 is a bottom perspective view of a latch relay according to the present invention.
5 is a view illustrating an operation principle of a latch relay according to the present invention.

Hereinafter, a latch relay according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, the contact part is firmly contacted to increase the contact contact stability, and the actuator can operate stably even when the housing is not assembled, thereby facilitating test or maintenance, and the structure is simple. And a latch relay which can be easily assembled to reduce manufacturing costs, comprising: (A) a base (10) having at least a guide support wall (10w); (B) a bobbin 21 installed at an upper portion of the base and provided with a plurality of coil terminals 20t connected to a wound coil 21c, and two yokes 22 and 23 installed through the bobbin. An electronic driving unit 20; (C) a movable contact (30) installed on one side of the electronic driving unit, connected to an external device, and in contact with the following fixed contact point; (D) a fixed contact (40) installed on one side of the movable contact, connected to an external device, and in contact with the movable contact; (E) an actuator (50) having an armature (50a) for transmitting the magnetic force of the permanent magnet to be pulled by the yoke of the electromagnetic drive unit, and rotates about the rotation axis (50s); (F) a handle 70 for moving horizontally by moving the actuator to move the movable contact and a housing 80 covering the upper portion of the base.

The base 10 is to maintain each component installed thereon to maintain component relationships. As shown in FIGS. 1 and 2, the guide support walls 10w are provided at both sides in the longitudinal direction, respectively. And an insulating wall 10i is formed at one end thereof to prevent a short circuit from occurring between the contacts.

The base is made of an insulating material such as synthetic resin, and the coil terminal 20t is exposed through the bottom opposite the insulating wall 10i. (See Fig. 4).

That is, between the two guide support walls 10w formed in the base 10, the electromagnetic driving unit 20 is installed, and a coil terminal 20t connected to the coil 21c constituting the electronic driving unit 20 is connected to the base of the base 10. It is exposed to the bottom through the floor.

The electronic driving unit 20 is a driving unit driven by a small power supplied from the outside, the bobbin 21 wound around the coil 21c is positioned between the guide support walls 10w, and passes through the bobbin 21 to yoke. (22, 23) are provided.

As shown in FIG. 1, the yokes 22 and 23 are symmetrically installed with respect to the middle portion of the coil 21c wound on the bobbin 21 and are provided with a small power supplied to the coil 21c. It is magnetized by to operate the actuator 50.

Contact protrusions 22c and 23c are formed at the outer ends of the yokes 22 and 23, respectively, and are bent upwards and inwards, and the contact protrusions 22c and 23c are armatures 50a of the actuator 50, respectively. ) Is selectively contacted to drive the actuator. That is, when power is supplied to the coil 21c, the yoke of either side of the two yokes 22 and 23 is magnetized, and the handle 70 is moved by pulling one end of the armature 50a provided in the actuator to rotate the actuator. To move the movable contact (30). Techniques related to this operation will be described again later, and thus detailed descriptions are omitted.

As described above, the actuator 50 is a means for operating the movable contact 30 among the two contacts 30 and 40, as shown in FIG. 1, and a permanent magnet in the center of the actuator housing 50h made of an insulator. 50m is provided, and a long plate-shaped armature 50a is provided respectively above and below the permanent magnet 50m, and any one of both ends of the armature 50a is driven by the electronic drive unit 20. This pull is rotated about the rotation shaft 50s, and the handle 70 is operated in accordance with the rotation of the actuator 50 to operate the movable contact 30.

That is, rotation shafts 50s are formed at both sides of the actuator housing 50h of the actuator 50, and the actuators 50 are installed to be rotated about the rotation shaft 50s.

An operating protrusion 50d is further formed on the upper surface of the actuator housing 50h of the actuator 50 so as to operate the handle 70 so that the through hole 70h of the handle 70 is rotated when the actuator 50 is rotated. The movable contact 30 is capable of contact or non-contact test by the fixed contact 40 by moving the handle 70 to the left and right to be inserted into the (70) to enable the linear movement of the rotation of the actuator (50). .

The two fingers 30 and 40 operated by the driving of the actuator 50 may be divided into the movable contact 30 and the fixed contact 40 as described above, and the contact points 30p and 40p having these contacts are formed. Terminals 30t and 40t provided at one end penetrate the base 10 and are exposed to the base bottom (see FIG. 4).

The movable contact 30 repeats contact or non-contact with the fixed contact 40 by the operation of the actuator 50 and the handle 70, and the coupling narrow portion having a narrower width than other portions at the end facing the handle ( 30c) is formed.

As shown in the drawings, the two contacts 30 and 40 form a pair, and two movable contacts are installed at the same time by driving the actuator 50 and are fixed to the movable contacts of the base 10. An insulating wall 10i is formed between the contact pairs to prevent the short circuit between neighboring contacts.

The actuator guide 60 is provided as a means for rotatably supporting the rotation shaft 50s of the actuator 50.

The actuator guide 60 is as shown in Figs. The inner side of the guide support wall (10w) formed on both sides of the base (10), respectively, is coupled to each other by coupling projections (60c) formed on the surface facing each other. That is, the coupling shaft 60c of the two actuator guides 60 in the state in which the actuators 50 are placed between the two actuator guides 60 is coupled to each other so that the rotation shafts 50s formed on the actuators 50 are the actuator guides 60. It is assembled to fit in the shaft hole (60s) formed in the).

The coupling holes 60d of the actuator guide 60 and the coupling protrusions 22d and 23d of the upper surfaces of the yokes 22 and 23 fix the positions of the two actuator guides 60 and the actuator 50 and the upper end of the actuator guide 60. It is possible to rotate and slide the handle (70).

The shaft hole 60s is formed as a long hole up and down as shown in FIGS. 1 and 2. That is, although the actuator 50 is rotated about the rotational axis 50s and the armature 50a should be pulled by the yokes 22 and 23 described above, the engaging projections 22c and 23c formed on the yokes 22 and 23. ), The yoke will not be able to contact the armature correctly if the height of the engaging protrusion changes. At this time, if the height of the rotating shaft (50s) can be adjusted up and down, the height of the actuator 50 can be changed and the height of the actuator can be changed by the magnetic force of the yoke by the magnetic force of the yoke so that the shaft hole (60s) is formed as a long hole up and down.

As shown in FIG. 1, the actuator guide 60 has a plate shape, and as described above, a shaft hole 60s into which the rotation shaft 50s is fitted is formed, and the handle 70 is horizontally formed. A sliding long hole 60h for guiding the movement is formed. That is, when the actuator 50 in which the rotation shaft 50s is fitted in the shaft hole 60s rotates, the handle 70 installed on the actuator moves horizontally to operate the movable contact 30, and the handle 70 moves up and down. A sliding long hole (60h) for guiding the moving direction of the handle 70 so that it can be moved horizontally without flowing is formed in the actuator guide (60).

The handle 70 is a means for operating the movable contact 30 in accordance with the operation of the actuator 50, as shown in Figures 1 and 2, to form a flat plate, both side walls of the actuator guide ( A sliding shaft 70s fitted into the sliding long hole 60h formed in 60 is formed, and a contact stand fixing hole 70p into which one end of the movable contact 30 is fitted is formed.

As described above, the handle 70 moves horizontally by driving the actuator 50. At this time, the one end of the movable contact 30 moves horizontally so that the handle 70 is in contact or non-contact with the fixed contact 40. 70) and a structure capable of connecting the movable contact 30 is required, and for this purpose, the contact point fixing hole 70p is formed so that the upper end of the movable contact 30 is fitted into and fixed.

Of course, a through hole 70h is formed at the center of the handle 70 to which the working protrusion 50d formed at the center of the actuator housing 50h is fitted, and at one side thereof, the handle 70 is manually moved. Key groove (70g) can be further formed when the tool is fitted.

The relay according to the present invention configured as described above is preferably provided with a cover to protect each component installed on the upper portion of the base 10, and has a housing 80 as a means to serve as a cover.

As shown in FIGS. 1 and 2, the housing 80 is formed in a cylindrical shape in which an empty space is formed inside and the surface opposite to the base 10 is opened, and fixing blades 80w are formed on both sides of the open surface. Are formed respectively. A locking groove 80g or a locking hole is formed in the fixed blade 80w, and a contact protrusion 10d formed in the base 10 is formed so that the housing is coupled to the base by locking the locking groove. .

A portion of the housing 80 which faces the key groove 70g is provided with a through hole 80h through which a tool fitted to the key groove 70g penetrates so that the handle can be manually operated even when the housing is not separated. It was.

Hereinafter, the driving of the latch relay configured as described above will be described.

Each terminal 30t, 40t of the movable contact 30 and the fixed contact 40 is connected to the control apparatus which can be remotely controlled.

First, the normal operation of the relay will be described, the coil terminal (20t) connected to the coil 21c of the bobbin 21 is the common terminal and (-), (+) poles the same as that provided in the normal relay If the terminal is provided and power is supplied to any one terminal including the common terminal, the yoke of one side has N polarity and the other side of the yoke has S polarity, and according to the polarity of the permanent magnet (50m) provided in the actuator 50 works.

In the drawing, when the actuator 50 rotates to the right side, the handle 70 moves to the right side, and the upper end of the movable contact table 30p connected to one end of the handle is inclined toward the fixed contact table 40p so that the movable contact 30 In contact with the fixed contact 40 is applied power to the control device.

In contrast to the above, when the power is supplied by changing the terminal, the actuator rotates to the left side and the handle 70 moves to the left side, and the upper end of the movable contact table 30p is inclined to the left to separate the movable contact and the fixed contact. Will be.

That is, as shown in FIG. 5 as an example, while supplying power to the coil 21c, while maintaining neutral as shown in FIG. 5 (a), (-) is applied to the left coil terminal and (+) to the right coil terminal. When supplied, the yoke is magnetized so that the left contact protrusion 22c is magnetized to the (N) pole and the right contact protrusion 23c is magnetized to the (S) pole, so that the upper (S) pole of the armature 50a is the left end. Is pulled by the left contact protrusion 22c magnetized by the (N) pole, and the right end portion is pushed by the right contact protrusion 23c magnetized by the (S) pole, as shown in Fig. 5 (b). It is rotated counterclockwise, and thus the handle 70 is moved to the left to move the movable contact 30 away from the fixed contact 40.

In this state, the pole of electricity supplied to the coil 21c is changed as shown in FIG. ) Is the (S) pole and the right contact protrusion 23c is magnetized to the (N) pole, so that the upper (S) pole of the armature 50a is magnetized to the left end of the (S) pole. Pushed by 22c, the right end is pulled by the right contact protrusion 23c magnetized by the (N) pole, and the actuator is rotated clockwise as shown in Fig. 5 (d), whereby the handle 70 The movable contact 30 is brought into contact with the fixed contact 40 by moving to the right.

For reference, when a current is applied to the coil, the yoke in the coil has a magnetic force, and the direction of the current is determined according to Enfer's right-handed law. In this way, when the current is applied to the left and right coil terminals, the direction of the current is determined according to the (+) and (-) polarities. The arrow directions of FIG. 5 are applied to the coil terminals on the left and right sides. It shows the direction of current determined by different polarity.

The following is a process of testing the driving of the lily by operating the actuator 50 manually.

Of course, at this time, the terminals 30t and 40t of the movable contact 30 and the fixed contact 40 are connected to a control device capable of remote control, and power is not supplied to the coil terminal 20t.

Since the housing 80 is preferably tested in a separated state, the housing is separated.

In this state, when the handle 70 is pushed to the fixed contact side, the movable contact table having one end connected to the handle is inclined to the right side so that the movable contact comes into contact with the fixed contact. It is separated from the fixed contact.

At this time, the actuator rotates left and right about the rotation axis.

The latch relay according to the present invention made as described above not only increases the stability of the contact contact by firmly contacting the contact portion, but also enables the actuator to operate stably even when the housing is not assembled, thereby facilitating testing or maintenance. It can be, the structure is simple and easy to manufacture and assembly can reduce the production cost.

10: Base
10w: guide support wall 10i: insulation wall
10d: contact protrusion 10p: bulkhead
20: Electronic Drive 20t: Coil Terminal
21: bobbin 21c: coil
22, 23: yoke 22c, 23c: contact projection
22d, 23d: engaging protrusion
30: movable contact 30c: coupling narrow
30p: Movable Contact Point 30t: Movable Contact Terminal
40: fixed contact
40p: fixed contact point 40t: fixed contact terminal
50: actuator
50a: amateur 50d: working projection
50m: permanent magnet 50s: rotating shaft
50h: actuator housing
60: Actuator Guide
60c: engaging projection 60h: sliding cabinet hole
60s: shaft 60d: coupling hole
70: handle
70g: keyway 70h: through hole
70p: Contact block fixing hole 70s: Sliding shaft
80: housing
80g: Hanging groove 80w: Fixed wing
80h: through hole

Claims (9)

(A) a base 10 having at least one guide support wall 10w;
(B) a bobbin 21 installed at an upper portion of the base and provided with a plurality of coil terminals 20t connected to a wound coil 21c, and two yokes 22 and 23 installed through the bobbin. An electronic driving unit 20;
(C) a movable contact (30) installed on one side of the electronic driving unit, connected to an external device, and in contact with the following fixed contact point;
(D) a fixed contact (40) installed on one side of the movable contact, connected to an external device, and in contact with the movable contact;
(E) an actuator (50) having an armature (50a) for transmitting the magnetic force of the permanent magnet to be pulled by the yoke of the electromagnetic drive unit, and rotates about the rotation axis (50s);
(F) a latch relay, characterized in that it comprises a housing (80) covering the upper portion of the base and the handle (70) for moving horizontally by moving the actuator to move the movable contact. The method of claim 1,
Actuator guides 60 supported by guide guide walls 10w formed on the base are provided at both sides of the actuator 50, respectively.
The actuator guide (60) is a latch relay, characterized in that the shaft hole (60s) is formed to be rotatably fitted to the rotating shaft (50s) formed in the actuator (50). 3. The method of claim 2,
The actuator guide 60 is further formed with a sliding long hole (60h) for guiding the handle (70) to move horizontally, both sides of the handle 70 to move in the state fitted to the sliding long hole (60h) Latch relay, characterized in that the sliding shaft (70s) is formed. 3. The method of claim 2,
A coupling relay (60c) is formed on the inner surface of the actuator guides (60) facing each other so that the two actuator guides are coupled with the actuators interposed therebetween. 3. The method of claim 2,
The shaft hole (60s) is formed in the form of a long hole up and down to enable the actuator (50) can be moved up and down the latch relay. The method of claim 1,
A key relay (70g) is formed on the upper surface of the handle (70), the latch relay, characterized in that the tool can be fitted when operating the handle manually. The method according to claim 6,
The latch relay, characterized in that the through hole (80h) through which the tool fitted into the key groove (70g) is formed in the portion facing the key groove (70g) of the housing (80). The method of claim 1,
The movable contact (30) and the fixed contact (40) is a pair of two, the latch relay, characterized in that the two movable contacts are operated at the same time by the drive of the actuator. 9. The method of claim 8,
The latch relay, characterized in that the insulating wall (10i) is formed in a portion of the base and the opposing contact between the movable contact and the fixed contact pair.

Images