KR20030058227A - Apparatus fitting with rail for electrical contactor - Google Patents

Abstract

PURPOSE: A rail coupling apparatus is provided to be capable of connecting a din rail using one spring by forming protrusions at a frame on every side. CONSTITUTION: Upper protrusions(111,112) and lower protrusions(113,114) are formed at a lower frame(110) of an electronic contactor. Upper and lower sides of a rail(200) are hitched at the upper protrusions and the lower protrusions. The rail is connected so as to be moved upward and downward inside the protrusions(111,112,113,114). A support part(115) is formed at an intermediate portion between the upper protrusions of the lower frame. An elastic member(120) is connected to the support part so that the rail is closely fixed at the lower protrusions.

Description

Rail coupling device of magnetic contactor {APPARATUS FITTING WITH RAIL FOR ELECTRICAL CONTACTOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail coupling device of a magnetic contactor, and in particular, a latching jaw is formed on the lower frame of the magnetic contactor in all directions, and the rail coupling of the magnetic contactor can be easily coupled to a din rail using only one spring. Relates to a device.

In general, a magnetic contactor is a power device used to turn on / off a motor. The principle of operation is that the coil is wound around the core inside the magnetic contactor to apply power, and a magnetic field is generated around the core to generate suction force.The magnetic contactor has a contact point that is mechanically turned on / off using this principle. When is attracted, the contact is pulled to turn on the motor, and when turned off, the contact is mechanically turned off by using the repulsive force of the elastic means provided in the magnetic contactor when the suction force is extinguished. In addition, a standard 3-pole magnetic contactor is mainly used for a motor, and in the case of Mini-MC, it is a magnetic contactor used for a small motor smaller than 3P MC.

The rail coupling device of the magnetic contactor is connected to the lower frame of the magnetic contactor by using a screwdriver, and then separated using a screwdriver. It is disadvantageous for the customer to listen and maintenance work due to the high labor time (hours) .In addition, when the thermal overload relay is connected to the bottom of the magnetic contactor, the thermal contactor may interfere with the thermal overload relay. Since the magnetic contactor can be separated from the thermal overload relay since it cannot be separated from the rail, there is a problem that it is very inconvenient to use because the magnetic contactor can be detached from the rail.

In addition, as a rail coupling device of another magnetic contactor, the lower frame of the magnetic contactor is coupled to a din rail using separate parts such as latches and elastic means, and the magnetic contactor can be separated from the rail. At this time, it is known that the latch is separated from the rail by the elasticity of the elastic means contained in the inside of the latch when the hand is pressed by hand. However, in order to provide convenience to the customer, the device uses a latch and the elastic means, which are separate molds. Because it must be used, it acts as a cause of cost increase, which is why manufacturers are avoiding hiring.

The present invention has been made in order to solve the above problems and defects as described above, to form a locking step in the lower frame of the magnetic contactor in all directions, and to be easily coupled to a din rail using only one spring. An object of the present invention is to provide a rail coupling device for a magnetic contactor.

1 and 2 is a view showing a magnetic contactor employing a rail coupling device of the magnetic contactor according to the present invention,

1 is a bottom perspective view showing a state in which a magnetic contactor is coupled to a rail;

Figure 2 is a bottom perspective view showing a state in which the magnetic contactor is separated from the rail.

<Description of the symbols for the main parts of the drawings>

100: magnetic contactor 110: lower frame

111, 112: upper locking jaw 113, 114: lower locking jaw

115: support portion 120: elastic means

200: rail

In order to achieve the above object, the rail coupling device of the magnetic contactor according to the present invention has upper and lower locking jaws formed in four directions on the lower frame of the magnetic contactor, and upper and lower edges of the rail have upper and lower locking jaws. In addition to the locking step, the rail is coupled to the upper and lower flows up and down the upper and lower locking jaw in a predetermined interval, the upper locking jaw of the lower frame, the support portion is formed in the middle portion between the support portion is elastic means By combining, the rail is configured to be fixed in close contact with the lower locking jaw side by the elasticity of the elastic means.

The present invention is suitable for the structure of Mini-MC, which is a particularly small model among the 3P and 4P magnetic contactor structures. Particularly, only the lower frame portion of the magnetic contactor is slightly changed, and only the elastic means is combined therewith, thereby simplifying the coupling and reducing the cost Can provide an effect.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail as follows.

1 and 2 is a view showing a magnetic contactor employing a rail coupling device of the magnetic contactor according to the present invention, Figure 1 is a bottom perspective view showing the magnetic contactor coupled to the rail, Figure 2 is a magnetic contactor Is a bottom perspective view showing a state in which the rail is separated from the rail.

As shown in the figure, the upper locking jaw 111, 112 and the lower locking jaw 113, 114 is formed in the lower frame 110 of the magnetic contactor 100, the rail 200 of the The upper and lower edges are caught by the upper locking jaws 111, 112 and the lower locking jaws 113, 114, and the rail 200 is caught by the upper locking jaws 111, 112 and the lower sides. The inner side of the jaw 113, 114 is coupled to flow up and down a predetermined interval, the support portion 115 is formed in the middle portion between the upper engaging jaw 111, 112 of the lower frame 110 The support portion 115 is coupled to the elastic means 120, the rail 200 is configured to be tightly fixed to the lower locking jaw 113, 114 by the elasticity of the elastic means 120.

In addition, it is preferable to use a compression coil spring for the elastic means (120).

Such a rail coupling device of the electromagnetic contactor of the present invention, when the lower frame 110 of the magnetic contactor 100 is coupled to the rail 200, the upper locking step 111 formed on the lower frame 110 is provided with the rail 200. , 112 and the lower engaging jaw 113, 114 is coupled between the inserted form, the elastic means 120 is inserted into the support portion 115 formed in the upper middle portion of the lower frame 110 rail ( 200 is fixed in the form of being in close contact with the lower locking jaw 113, 114 by the elasticity of the elastic means 120, when coupled in this way, the rail 200 is the upper locking jaw 111, 112 It is caught by the lower locking jaw 113, 114 and is in close contact so as not to flow by the elastic means 120 is maintained in a stable state without being separated.

In addition, when the magnetic contactor 100 is to be separated from the rail 200, when the magnetic contactor 100 is pushed by hand in the direction of the arrow, the elastic means 120 is compressed and the lower locking jaw of the magnetic contactor 100 ( 113, 114 is separated from the rail 200, so that the magnetic contactor 100 can be separated from the rail 200.

As described above, the rail coupling device of the magnetic contactor is formed by engaging the magnetic contactor to the rail and integrally forming the locking step on the lower frame of the magnetic contactor, and using one elastic means to reduce the number of parts used, thereby reducing the cost. There is an advantage that contributes to, and because it is combined and separated in one-touch (one touch) method using a hand without using a separate tool such as a driver, there is an advantage in convenience of use. As described above, the present invention provides convenience to the user and provides cost reduction benefits to the manufacturer, which is advantageous to both the customer and the manufacturer.

Claims (2)

The upper locking jaw 111, 112 and the lower locking jaw 113, 114 is formed in all directions on the lower frame 110 of the magnetic contactor 100, the upper and lower sides of the rail 200 In addition to the upper locking jaw 111, 112 and the lower locking jaw 113, 114, the rail 200 is the upper locking jaw 111, 112 and the lower locking jaw 113, ( 114 is coupled to flow up and down a predetermined interval from the inside, the support portion 115 is formed in the middle portion between the upper engaging jaw 111, 112 of the lower frame 110, the support portion 115 is elastic By combining the means 120, the rail 200 is coupled to the rail contactor of the magnetic contactor, characterized in that the close contact fixed to the lower locking step 113, 114 by the elastic means 120 elasticity . According to claim 1, The elastic means 120 is a rail coupling device of the magnetic contactor, characterized in that the compression coil spring.