KR101118189B1 - Welding method and device of terminal for relay - Google Patents

Abstract

PURPOSE: Welding method and device of a terminal for a relay are provided to solve electrical disconnection due to welding failure since the electrical connection of a coil pin to a terminal is performed through electrical welding. CONSTITUTION: A welding device of a terminal for a relay comprises a jig(112), a welding body(115), a welding rod(117), a ground rod(118), a welding unit(120), and a ground tip(121). The jig holds a relay(100) on the central part of a base. The welding body rises or falls in a jig direction by a lift unit(114) in front of a supporter(113). The welding rod and the ground rod are mounted on the welding body to receive power required for welding-connecting the coil pin to the terminal. The welding unit welds the coil pin to the terminal. The ground tip makes contact with the terminal on the lower end of the ground rod.

Description

Terminal Welding Method and Device for Relays {WELDING METHOD AND DEVICE OF TERMINAL FOR RELAY}

The present invention relates to a terminal welding method and apparatus for a relay, and more particularly, to prevent environmental pollution while eliminating a defect in an electrical connection state, thereby improving the quality of a completed relay and providing an ease of manufacture. The present invention relates to a terminal welding method and a welding device.

A relay is an electromagnet that can pull a metal piece by winding a coil around an iron core to draw a current, and uses this force to open and close a contact.

In the electric circuit, when a circuit is divided into two and a signal is created on one side and the operation of the other circuit is required to be opened or closed according to the signal, the electronic component is a relay and a kind of electric switch. Is composed of an electromagnet, a spring, a terminal, and the like, and the number of terminals may be added or subtracted depending on the application.

Looking at the configuration of the relay briefly, the coil pin connected to the end of the coil is pressed into the bobbin winding coil to expose the upper portion of the case, the coil pin is projected to the front of the case to be connected to the object Configure electrical connection with the terminal.

Recently, as the demands of consumers increase with the development of electric and electronic products, the use of relays is increasing rapidly in automobiles or electric vehicles in order to provide higher convenience, superior quality, and smooth operation.

In particular, the relays used in automobiles are starting, preheating, air conditioning, lighting, window brush oil pump, anti-theft, sound, communication, window operation, airbag, anti-locking brak system (ABS) and weighing, troubleshooting, etc. It is widely applied and applied.

In the prior art, as a means for electrical conduction between the coil pin connected to the coil wound on the bobbin and the terminal for connection, the coil pin is connected to the terminal and then soldered.

When the soldering is performed, the soldering holes are formed in coil pins or terminals connected to each other for reliable electrical connection, and the soldering holes are coated and filled to cool the electrical connections.

However, if a small amount is filled in the soldering hole during the application of the lead solution, the connection is not good, and if the vibration or shock is conducted, the coil pin and the terminal are easily separated and the electrical connection is not maintained. It causes.

In addition, when a large amount of lead solution is filled in the solder hole, the connection between the coil pin and the terminal may be made firm. However, since the lead solution is cooled and protrudes upward, it is caught in the case of the object in the process of connecting the relay, so that normal coupling is performed. Failure to make will occur.

In addition, in the process of repeating the connection and separation with the object in the state in which the lead liquid is protruded upward, damage to the relay or the coil of the object, causing a disconnection, which is another cause of malfunction in the actual use process It is true.

In addition, many people rely on manual work instead of performing soldering mechanically, so the soldering state at that time varies depending on the ups and downs of the operator's experience and emotions. Difficulties follow

The lead used for soldering is accumulated in the body and its toxicity appears after a long time, and when it occurs, it becomes fatal. When lead poisoning occurs, it causes brain and nervous system problems, and mental disorders, physical paralysis, anemia, Vomiting occurs, and in severe cases, it can be fatal within one to two days.

The initial symptoms of lead poisoning are anorexia, constipation and bloating, and further progression of acute abdominal pain, complaints of malaise, insomnia, neuroses, headaches, etc. Leads on the gums lead to limp, and convulsions occur on the fingers and eyes. Numbness in the hands and arms and muscle disorders such as joint pain and muscle pain.

The biggest hazards from lead poisoning are central nervous system disorders. Once lead enters the brain tissue, it leads to impaired contact between brain cells, causes severe brain poisoning symptoms, almost impossible recovery, severe excitement, confusion, convulsions, It has been shown to accompany seizures.

For this reason, the electrical connection is performed by soldering the coil pins and terminals of the relay to the worker, which may lead to deterioration of health due to harmful components of lead and contaminate the environment without maintaining a pleasant working environment. There are a number of problems such as that.

In the present invention, to solve the problems as described above, in the construction of a welding device for performing electrical connection of the coil pin and the terminal constituting the relay;

The welding apparatus includes a jig provided to settle the relay in the center of the base provided with a flat plate, a welding body installed to descend or rise in the jig direction by an elevating means in front of the supporter standing behind the jig; A welding rod and a ground rod mounted on the welding body to receive power required for welding so as to be connected to the coil pin and the terminal, and a welding means formed at the bottom of the welding rod to substantially weld and connect the coil pin and the terminal; A grounding tip formed at a lower end thereof, the grounding tip being reduced in diameter so as to be connected to the terminal to perform grounding, and being in point contact with the terminal exposed on the upper portion of the case;

By connecting the coil pin and the terminal by welding, it is possible to achieve the purpose of improving the quality and durability of the relay by maintaining excellent quality uniformly while maintaining a comfortable working environment.

The present invention is to perform the electrical connection between the coil pin and the terminal constituting the relay through the electrical welding, to solve the unconnected electrical state that can be caused by poor welding, to maintain a uniform quality to maintain a consistent quality In addition to improving the quality of the relay by providing ease, it is an invention having various effects, such as to contribute to the health of workers by maintaining a comfortable working environment.

1 is an external perspective view of a relay shown to explain the present invention.
Figure 2 is an excerpt configuration diagram of the welded portion of the relay shown to explain the present invention.
3 is a process block diagram showing a terminal welding method for a relay to which the technique of the present invention is applied.
Figure 4 is a block diagram showing a terminal welding device for relay to which the technique of the present invention is applied.
Figure 5 is a block diagram showing an important part of the terminal welding device for relay to which the technique of the present invention is applied.
Figure 6 is a cross-sectional view taken a portion A of the terminal welding device for relay to which the technique of the present invention is applied.
Figure 7 is a configuration diagram of another example showing an extract of the important part of the terminal welding device for relay to which the technique of the present invention is applied.

Hereinafter, with reference to the accompanying drawings look at a preferred example of the present invention for achieving the above object.

1 is an external perspective view of a relay shown to explain the present invention, FIG. 2 is an excerpt configuration diagram of a welded portion of the relay shown to explain the present invention, and FIG. 3 is a terminal welding method for a relay to which the technique of the present invention is applied. 4 is a block diagram showing a terminal welding device for relay to which the technology of the present invention is applied, and FIG. 5 is a block diagram showing an important part of the terminal welding device for relay to which the technology of the present invention is applied. 6 is a cross-sectional view showing a portion A of the terminal welding device for relay to which the technology of the present invention is applied, and FIG. 7 is a configuration diagram of another example showing an important part of the terminal welding device for relay to which the technology of the present invention is applied. Explain together.

In the conventional relay 100, the coil pin 104 connected to the end of the coil 102 is press-fitted into the bobbin 103 wound around the coil 102 in the case 101, so that the upper portion of the case 101 is pressed. The coil pin 104 is configured to be electrically connected to the terminal 105 protruding forward of the case 101 so as to be connected to the object.

In the present invention, the electrical connection between the coil pin 104 and the terminal 105 of the relay 100 is made by welding, and the coil pin 104 and the terminal 105 is easily welded. It is characterized by providing a new welding device 110 that can be connected.

The welding device 110 has a jig 112 for placing and holding the relay 100 to be welded at the center of the base 111 provided as a flat plate, and the jig 112 is a relay to be welded. It will be obvious that the provided 100 can be exchanged according to the shape, shape or size of the 100.

At the rear of the jig 112, a welding body 115 that is lowered or raised in the direction of the jig 112 by a lifting means 114, such as a cylinder or a ball screw, is installed in front of the supporter 113 that is vertically installed. .

Below the welding body 115 is connected to the coil pin 104 and the terminal 105 constituting the jig 100, enamel covering the surface of the coil 102 wound on the coil pin 104 ( 116 to melt the electrode 102 and the grounding rod 118 to contact the terminal 105 to perform the grounding required for welding and the electrode 117 to make electrical contact between the coil 102 and the coil pin 104 is made. Extrude

Of course, the welding rod 117 and the ground rod 118 is applied to the power required for welding, as well as the welding and the ground rods (117,118) by a separate operation switch to be able to perform the welding is a matter of course. will be.

The lower end of the electrode 117 is formed integrally with the welding means 120 for welding the coil pin 104 and the terminal 105, the lower end of the ground rod 118 is connected to the terminal 105 The diameter is reduced to perform the grounding to form a grounding tip 121 of the shape that can be in point contact with the terminal exposed in a circular shape to the top of the case 101.

The welding means 120 is melted by direct contact with the right end 122 of the coil pin 104 located on the upper surface of the terminal 105 in the right end 122 of the coil pin 104 to be melted and point-joined. Coil wound on the coil pin 104 using a welding tip 123 formed on the lower right side of the welding rod 117 and a lower left side of the welding rod 117 to form a smaller size and using heat generated during welding ( The enamel 116 coated on the 102 is melted so that the coil 102 and the coil pin 104 are in contact with each other.

The melting tip 124 is recessed from the left side of the welding tip 123 to the upper side to receive the coil 102 to the melting groove 125 to melt the enamel 116 by the heat generated by welding the welding rod 117 Form up to the bottom left of the.

The height H of the molten groove 125 is formed higher than the diameter D of the coil 102 wound on the coil pin 104 so that the lower end of the molten groove 125 and the coil 102 are not directly connected to each other. It is preferable not to, and it is preferable to have a gap 126 corresponding to 10 to 20% of the coil diameter D from the outer surface of the coil 102 to the lower surface of the molten groove 125.

It will be apparent that the welding rod 117 and the ground rod 118 mounted on the welding body 115 may also be actively exchanged according to the diameter of the relay 100 or the coil 102.

Looking at the process of performing the electrical connection by welding the coil pin 104 and the terminal 105 constituting the relay 100 using the welding device 110 as described above.

Step S1 of placing the relay 100 on the jig 112 of the welding device 110 to be welded (S1), a welding rod 117 and a grounding rod 118 provided below the welding body 115. Lowering) to be connected to the coil pin 104 and the terminal 105 of the relay 100 and then applying power to the welding step fusion welding the coil pin 104 and the terminal 105 by the electrode 117 It consists of (S2).

In the welding step S2, the grounding tip 121 formed at the lower end of the grounding rod 118 is connected to the terminal 105 exposed above the case 101 of the relay 100 so as to be grounded (S21). And, the welding tip 123 formed at the lower end of the welding rod 117 is connected to the coil pin 104 and the right end of the terminal 105 by melting and connecting (S22) and the welding rod 117 The coil 102 and the coil pin 104 are in contact with each other by melting the enamel 116 covering the coil 102 wound on the coil pin 104 by the melting tip 124 formed at the bottom of the coil 102. To have a melting process (S23) to be.

The grounding process (S21), the welding process (S22) and the melting process (S23) is not to be made independently of each other, it will be natural to be made simultaneously by the lowering of the electrode 117 and the grounding rod 118.

Example.

When the diameter of the coil 102 wound on the bobbin 103 of the relay 100 is 0.17 mm, the height H of the melting groove 125 constituting the melting tip 124 formed at the lower end of the welding rod 117 ) Added the height corresponding to 10-20% of the diameter (D, 0.17mm) of the coil 102, and it mounted and exchanged with the welding rod 117 whose height H of the molten groove 125 is 0.2 mm.

In this case, when the welding rod 117 is lowered and connected to the upper surface of the coil pin 104 in close contact with the upper surface of the terminal 105, the electrode 117 maintains a distance of about 0.03 mm from the upper surface of the coil 102.

In this state, the relay 100 is placed in the jig 112, and then the lifting means 114 is operated to lower the welding body 115. The welding rod 117 and the grounding rod 118 mounted on the welding body 115 descend. The upper surface of the coil pin 104 and the terminal 105 of the relay 100 placed in the jig 112 is connected.

Then, the welding tip 123 constituting the welding means 120 formed at the lower end of the welding rod 117 by applying power to the welding rod 117 and the grounding rod 118 is the right side of the coil pin 104 and the terminal 105. When the stage 122 is melted to be bonded to each other, and at the same time, the melting tip 124 is welded when the enamel 116 covering the coil 102 wound on the coil pin 104 is melted as a heat to be electrically connected. The task is complete.

5 shows that the welding tip 123 is located at the right end 122 of the terminal 105 in FIG. 5, but the welding tip 123 may be positioned at the center of the terminal 105 as shown in FIG. 7. As will be appreciated, it will not be limited to the examples of the drawings of the invention.

In this process, the welding time is 0.3 to 0.4 seconds in the case of normal electric welding, but the welding is sufficiently performed, but the enamel 116 covering the coil 102 must be melted using indirect heat. It requires an average time of 0.9 seconds, where the welding of the shorter time than 0.9 seconds can be irregularly melted of the enamel 116, if welding for a time longer than 0.9 seconds the enamel 116 as well as the coil There is a risk of disconnection up to 102, which is undesirable.

The voltage applied to the electrode 117 and the ground rod 118 is preferably from +0.1 to -0.1Ka at 1.8Ka, when the voltage is lowered below 1.7Ka, the welding is practically not made, more than 1.9Ka If the welding can be made well, but because the plastic product, such as the case 101 constituting the terminal may melt.

In order for the welding rod 117 and the grounding rod 118 to perform welding, the force for pressing the coil pin 104 and the terminal 105 of the relay 100 is preferably 2.0 ± 0.5 Kgf / cm 2, when the pressure is low. Only sparks occur at the welding part and practical welding cannot be performed. When the pressure is higher than necessary, the electrode 117 and the ground rod 118 pressurize the relay 100 excessively, causing damage to the relay 100. .

The present invention as described above can be at the edge of the external competitiveness by performing the connection of the coil pin and the terminal constituting the relay by welding to maintain a pleasant working environment uniformly to improve the quality and durability of the relay. It has a variety of advantages.

100; Relay 104; Coil pin
105; Terminal 110; Welding equipment
112; Jig 115; Welding body
117; Electrode 118; Ground rod
120; Welding means 121; Grounding tip
123; Weld tip 124; Melting tip
125; Melt Groove

Claims (5)

In constructing a welding device for performing electrical connection of the coil pin and the terminal constituting the relay;
The welding apparatus includes a jig provided to settle the relay in the center of the base provided as a flat plate;
A welding body installed downwardly or upwardly in the jig direction by an elevating means in front of the supporter erected behind the jig;
A welding rod and a ground rod mounted on the welding body and receiving power for welding so as to be connected to the coil pin and the terminal;
A welding means formed at a lower end of the electrode to substantially connect the coil pin and the terminal by welding;
Formed at the bottom of the ground rod is connected to the terminal is connected to the terminal is reduced in diameter to perform a grounding, the terminal welding device for a relay, characterized in that it comprises a ground tip that can be in point contact with the terminal exposed on the top of the case. In the welding box for performing electrical connection of the coil pin and the terminal constituting the relay;
Placing a relay to be welded on a jig of the welding apparatus;
A welding step of lowering a welding rod and a grounding rod mounted below the welding body of the welding device to connect the coil pin and the terminal, and applying a power to the welding pin to melt-bond the coil pin and the terminal;
A grounding process in which the grounding tip formed at the bottom of the grounding rod is connected to a terminal exposed above the case of the relay to be grounded;
A welding process in which a welding tip formed at the lower end of the welding rod is connected to the coil pin and the right end of the terminal by melting and connecting the welding tip;
The relay for melting the enamel covering the coil wound on the coil pin by the melting tip formed on the lower end of the electrode to further have a melting process so that the coil and the coil pin is in contact with the electrical connection Terminal welding method. The method of claim 1;
The welding means may include a welding tip formed to allow melting point bonding by direct contact with a right end of a coil pin positioned on an upper surface of a terminal;
Formed on the lower left side of the welding rod using a heat generated during welding to melt the enamel coated on the coil wound on the coil pin to form a melting tip to contact the coil and the coil pin;
The melting tip is a terminal welding device for a relay, characterized in that formed by forming a molten groove so that the enamel is melted by heat generated by welding by receiving the coil from the left side of the welding tip. The method of claim 2;
The grounding process, the welding process and the melting process is a terminal welding method for a relay, characterized in that at the same time made by the lowering of the electrode and the grounding rod. 4. The method of claim 3, further comprising:
The height of the molten groove is formed higher than the diameter of the coil wound on the coil pin terminal welding device for a relay, characterized in that the lower end of the molten groove and the coil is not directly connected.

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