KR200330072Y1 - Blower resister - Google Patents

Abstract

The present disclosure relates to a blower resistor which has a good connection state, a good coupling state, to prevent easy escape or flow, and to form a fuse accommodating part so that the leaf spring is soldered thereto.

The blower resistor is connected to the connection terminal of the resistor plate by being fixed to a connector to which the plurality of resistor plates and a heat transfer plate are inserted between the cover member and the heat sink and a heat transfer plate are inserted, and the cover member is fixed. In a blower register including a socket unit in which a plurality of terminals are formed, the terminal of the socket unit is achieved by dividing a connecting portion fixed to a connecting portion of the resistance plate.

Description

Blower Resistor {Blower resister}

The present invention relates to a blower resistor, in particular, the connection state between the connection terminal of the resistance plate and the terminal of the socket unit is excellent, and the coupling force between the connector and the terminal is excellent to prevent the easy separation or flow, forming a fuse receiving portion This relates to a blower resistor in which the leaf springs are soldered with solder.

Air conditioners and heaters, such as automobiles, are usually used by controlling blowers in multiple stages by using a blower motor. In order to control the blower volume of the blower motor, a control circuit is connected to the blower motor. In the low stage, it supplies a low current to the blower motor through a plurality of resistors, so it supplies a small amount of air flow to the blower motor with less resistance or little resistance as the higher stage goes up, so a large amount of air can be supplied to the air conditioner or heater. Will be supplied.

1 and 2 are perspective and exploded perspective views of a conventional blower resistor, and FIGS. 2A and 2B are enlarged cross-sectional views of a main part, and as shown, an insulating plate 12 is disposed between a plurality of independent resistance plates 11. The heat sink 13 and the cover member 14 surround the resistor plate 11 and the insulating plate 12, and are fixed to the socket unit 20 by a support angle 13a formed at the lower end of the heat sink 13. The plurality of resistance plates 11 have connection terminals 11a at both ends thereof, and these connection terminals 11a are fixed to the terminals 22 inserted and fixed in the socket unit 20.

At this time, the connection terminals 11a formed on the plurality of resistance plates 11 are fixed to the terminal 22 by spot welding between adjacent connection terminals 11a, and the connection terminals 11a positioned at the outer ends are independent of each other. In this connection method, the spot welding is performed so that the two connection terminals 11a overlap the rear of the terminal 22 so that the connection state between the connection terminals 11a is poor. There is a problem, it is easily shorted.

In addition, in order to prevent the terminal 22 from being inserted into the socket unit 20 from being separated, an insertion part 22a divided in the terminal 22 is formed, and the insertion part 22a is formed in the socket unit 20. The terminal 22 is fixed to the socket unit 20 by caulking to bend the insertion part 22a of the terminal 22 exposed through the lower part by inserting it through the socket part 20 to surround the part. The cover member (20a) is coupled to the lower side, which requires a separate process to fix the terminal 22 to the socket unit 20, the left and right flow of the inserted terminal 22 is generated, the insertion portion ( If the caulking operation of 22a) is incomplete, there is a possibility that the terminal 22 may be separated from the socket unit 20, and a separate cover member 20a is additionally coupled to the lower portion of the socket unit 20. This happens.

And, the upper side of the socket unit 20 is formed with a protruding rib 24 to the outside of the terminal 22, when foreign matter such as moisture flows into the protruding rib 24, the introduced foreign matter protrudes There is a problem that the ribs 24 are not discharged outward.

On the other hand, the connecting portion 22b of the first terminal 22 is soldered (S) by soldering with a predetermined elastic force applied to the first resistive plate 11, which has a structure in which the resistive portion 10 is overheated and soldered. If the solder in the portion (S) is scattered, a problem arises in which the adjacent resistance plates 11, the terminals 22, and the like are contaminated.

The blower resistor of the present invention is designed to solve the above problems, and improves the connection method between the connection terminal and the terminal to prevent easy short-circuit, and to prevent the blower resistor which is easily detached or flown from the terminal inserted into the connector. The purpose is to provide.

In addition, the object of the present invention is to provide a blower resistor which prevents contamination of the resistance circuit portion due to the solder melt due to overheating of the resistance portion, and reduces manufacturing cost by shortening manufacturing and manufacturing time.

1A is a perspective view of a conventional blower resistor,

Figure 1b is an exploded perspective view of a conventional blower resistor,

2A and 2B are enlarged cross-sectional views of main parts of a conventional blower resistor;

3 is a perspective view of the present invention blower resistor,

4 is an exploded perspective view of the present blower resistor;

5 is a cross-sectional view of the blower resistor of the present invention;

6 is a front view of the present blower resistor.

※ Explanation of codes for main parts of drawing

100: resistance unit 110: heat sink

122, 124, 126: First, second, third resistance plate 130: Insulation plate

140: cover member 142: support angle

150: support 200: socket unit

210: connector 214: connection hole

215: Opening section 216: protrusion rib

220: Terminal

222,224,226,228: Terminals 1, 2, 3, 4

300: leaf spring

The blower resistor for achieving the above object is a resistance plate which is inserted into a plurality of resistance plates and a heat transfer plate provided with a plurality of connection portions at the bottom between the cover member and the heat sink, the connector is fixed to the connector is fixed to the resistance plate A blower register comprising a socket unit having a plurality of terminals connected to a connection terminal of the connector, wherein the terminal of the socket unit is achieved by providing a blower resistor, wherein a connection portion fixed to a connection portion of the resistance plate is divided. do.

The connector of the socket unit of the blower resistor of the present invention forms an insertion groove having a predetermined depth at both sides such that the inlet of the connection hole into which the terminal is inserted forms a U-shape, and the terminal inserted into the connection hole corresponds to the insertion groove. It is preferable to form fixing pieces on both sides.

Preferably, the terminal of the blower resistor of the present invention protrudes a locking piece that is inserted and supported in the connection hole of the connector.

It is preferable that the connector of the socket unit of the blower resistor of the present invention forms an accommodating groove in which the lower end of the leaf spring is accommodated.

The connector of the socket unit of the blower resistor of the present invention forms a protruding rib around a seating portion on which the resistance part is seated, and preferably forms an opening in front and rear of the protruding rib.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of the blower resistor of the present invention, FIG. 4 is an exploded perspective view of the blower resistor of the present invention, and FIG. 5 is a combined cross-sectional view of the blower resistor of the present invention.

The blower resistor of the present invention according to the drawings consists of a resistor unit 100 and a socket unit 200.

Here, the resistor unit 100 is composed of the heat sink 110, the resistor plate 120, the insulator 130 and the cover member 140 again.

The resistor plate 120 includes an independent first resistor plate 122, a second resistor plate 124, and a third resistor plate 126, and each of the first, second, and third resistor plates 122, 124, and 126. Connection terminals 122a, 122b, 124a, 124b, 126a, and 126b are formed at both ends of the lower side of the panel.

The cover member 140 forms a support angle 142 at both lower ends, an inner side of the receiving space, and forms bending protrusions 144 along upper, left and right edges. One side of the cover member 140 is fixed to the support 150 is formed with a fixing groove 152.

The heat dissipation plate 110 has a plurality of heat dissipation fins 112 formed on the outer plate surface, the outer edge portion is formed with a coupling groove 114 corresponding to the bent projection 144 of the cover member 140.

The insulating material 130 is a second insulating material interposed between the first insulating material 132 and the first resistance plate 122 and the second resistance plate 124 where one side is in contact with the inside of the cover member 140 ( 134, the third insulating material 136 interposed between the second resistor plate 124 and the third resistor plate 126, and the fourth resistor positioned between the third resistor plate 126 and the heat sink 110. It is made of an insulating material (138).

Meanwhile, the socket unit 200 includes a connector 210, a terminal 200, and a leaf spring 300.

The connector 210 forms a plurality of connection holes 214 vertically penetrating the upper surface, and forms a protruding rib 216 having an opening 215 formed in front and rear around the connection hole 214. The connection hole 214 is formed with a fixing groove 217 having a predetermined depth on both sides so that the inlet is made of a substantially C-shape, the cover member 140 of the resistance portion 100 on both sides of the protruding rib 216 A support hole 219 is formed corresponding to the support angle 142 formed at the upper surface, and a receiving groove 218 having a predetermined depth is formed at one side of the upper surface.

The terminal 220 is composed of the first terminal to the fourth terminal (222, 224, 226, 228),

The first terminal 222 has a connection portion 222a is inserted through the connection hole 214 at the lower end, the upper end is formed with a connection portion 222b in close contact with the upper surface of the connector 210.

The second and third terminals 224 and 226 are formed at the bottom thereof with connection portions 224a and 226a inserted into the connection holes 214 and corresponding to the fixing grooves 217 of the connection holes 214 at both centers thereof. The fixing pieces 224c and 226c are formed, and the engaging pieces 224d and 226d protrude from the fixing pieces 224c and 226c, and the connecting portions 224b and 226b at the upper end are formed of the first and second resistance plates ( It is divided so as to be fixed to the connection terminals 122b and 124a of the 122 and 124 and the connection terminals 124b and 126a of the second and third resistance plates 124 and 126, respectively.

The fourth terminal 228 has a connection portion 228a inserted into the connection hole 214 at a lower end thereof, and is bent at the center thereof to be in close contact with the upper surface of the connector 110. The connection part 228b connected to the connection terminal 126b of 126 is formed.

On the other hand, the leaf spring 300 is fixed to the lower end of the connection portion 222b of the first terminal 222 by spot welding so as to act as a temperature fuse, the front end is applied to a predetermined elastic force of the resistance portion 100 Soldering (S) by the solder to the fixing groove 152 formed in the support (150).

Hereinafter, the operation of the present invention blower register having the above configuration will be described.

First, support angles 142 formed on both side lower portions of the cover member 140 surrounding the plurality of resistance plates 120, the insulating plate 130, and the heat sink 110 are formed in the connector 210 of the socket unit 200. It is inserted into the support hole 219 and fixed.

The first, second, and third resistor plates 122, 124, and 126 of the resistor unit 100 have a plurality of connection terminals 122a, 122b, 124a, 124b, 126a, and 126b protruding downward from each other. The connection terminals 122b and 124a of the first and second resistance plates 122 and 124 are spot welded to the connection portions 224 b formed on the upper part of the second terminal 224 protruding to the upper surface of the connector 210 of the 200. The connection terminals 124b and 126a of the second and third resistor plates 124 and 126 are respectively fixed to spot welds on the split connection parts 226b of the third terminal 226, and the third resistor plate 126 The remaining connection terminal 126b of the () is spot welded to the connecting portion 228b of the fourth terminal 228, and the remaining connection terminal 122a of the first resistor plate 122 is spot welded to the cover member 140 (See Fig. 6).

Meanwhile, second and third terminals 224 and 226 are inserted into the connection holes 214 formed through the connector 210. In this case, the fixing holes 217 having predetermined depths formed at both sides of the connection holes 214 are inserted. The fixing pieces 224c and 226c of the second and third terminals 224 and 226 are inserted to prevent the second and third terminals 224 and 226 from escaping downward, and at the same time, they prevent the flow from side to side. The locking pieces 224d and 226d protruding while being inclined upward from the center of the fixing pieces 224c and 226c of the third terminals 224 and 226 are inserted into the connection holes 214 and thus the movement to the insertion side is restricted. The second and third terminals 224 and 226 inserted into the connection holes 214 are prevented from escaping upward.

In addition, a lower end of the leaf spring 300 is spot-welded and fixed to the bottom surface of the connection portion 222b of the first terminal 222 inserted into the connection hole 214 formed in the connector 210, and the first terminal 222. The lower end of the leaf spring 300 attached to protrude from the bottom of the accommodating groove 218 formed in the upper surface of the connector 210 is received, the upper end of the cover member 140 is given a predetermined elastic force Solder (S) by the solder to the fixing groove 152 of the fixed support 150.

That is, the first terminal 222, which is a common terminal, is fixed to the leaf spring 300 that serves as a temperature fuse, and the leaf spring 300 is soldered to the support 150 fixed to the side surface of the cover member 140 (S). The cover member 140 is fixed to the first resistance plate 122 again. Meanwhile, the second terminal 224, which is energized by the first resistor plate 122, is energized with the second terminal 224 through the second resistor plate 124, and the second terminal 224 is the third resistor plate. Since the fourth terminal 228 is energized through 126, the plate spring 300, the cover member 140, the resistance plates 120, and the terminal 220 form a closed circuit.

Thus, when high current flows due to overcurrent and overvoltage due to mechanical friction or other external factors, the soldering resistor S portion of the leaf spring 300 is melted and the upper end of the leaf spring 300 is covered with the cover member 140. As the circuit is opened while being separated from the fixing groove 152 of the support 150 fixed to the side of the), the blower motor including the blower resistor is stopped.

On the other hand, a protrusion rib 216 is formed on the upper surface of the connector 210 of the socket unit 200, by forming the opening 215 on the front and rear of the protrusion rib 216, the inner side of the protrusion rib 216 So that even if contaminants enter, it can be easily escaped.

Thus, the blower resistor of the present invention improves the connection method between the resistance plate 120 and the terminal 220 to prevent the short circuit, and prevents the terminal 220 inserted into the connector 210 from being easily separated or flown. The plate spring 300, which serves as a temperature fuse, forms a fixing groove 152 in the support 150 to be soldered (S) to increase the efficiency of the work, and the soldering (S) portion of the resistance plate 120 or the terminal 220 ), The resistance plate 120 or the terminal 220 is not contaminated with the solder melt even if the solder is melted and scattered. In addition, by eliminating the caulking operation for fixing the terminal after inserting into the connector as in the prior art, the labor and time required for manufacturing is reduced.

As described above, the blower resistor of the present invention has an effect of improving the reliability of the product by strengthening the connection force between the terminals, and prevent the flow in the state that is randomly separated or inserted when the product is combined.

In addition, it is also effective to prevent the contamination of the resistance circuit portion by the solder melt due to overheating of the resistance portion, and to reduce the manufacturing cost by reducing the labor and time required for manufacturing.

Claims (5)

A plurality of resistor plates provided with connection terminals at both ends and a resistance plate inserted between the cover member and the heat sink between the resistor plates and the connector to which the cover member is fixed are fixed to the connector to which the cover member is fixed. A blower register comprising a socket unit having a plurality of terminals for connecting with The terminal of the socket unit is a blower resistor, characterized in that the connection is fixed to the connection portion of the resistance plate. The method of claim 1, The connector of the socket unit forms an insertion groove having a predetermined depth on both sides such that the inlet of the connection hole into which the terminal is inserted forms a U-shape, and the terminal inserted into the connection hole has fixing pieces corresponding to the insertion groove on both sides. And a blower resistor, characterized in that it is formed. The method of claim 1, The terminal is characterized in that the blower register protruding to form a locking piece that is inserted into the connection hole of the connector. The method of claim 1, The connector of the socket unit is a blower resistor, characterized in that the upper surface to form a receiving groove for receiving the lower end of the leaf spring. The method of claim 1, The socket unit is formed on the upper surface of the connector protruding ribs for protecting the blower resistor, characterized in that the opening is formed in front and rear of the protruding ribs.