KR20050101816A - Structure for fixing of lead wire in drum-washer - Google Patents

Abstract

The present invention relates to a drum washing machine, and more particularly, to improve the fixing structure of the lead wire exposed to the tub rear wall side, so that the lead wire can be securely fixed.

To this end, the present invention is a tub installed in the cabinet to store the wash water, a washing water heating heater installed inside the tub to heat the wash water stored in the tub, the thermistor for measuring the temperature of the wash water, and A heater fixing part provided at a lower rear side of the tub to fix the washing water heating heater and the thermistor, and fixing means formed around the heater fixing part to fix the lead wire connected to the washing water heating heater and thermistor to the tub. It provides a thermistor lead wire fixing structure of the drum washing machine comprising a.

Description

Structure for fixing of lead wire in drum-washer

The present invention relates to a drum washing machine, and more particularly, to a thermistor lead wire fixing structure of the drum washing machine is connected to the thermistor for sensing the temperature of the wash water.

In general, the drum washing machine is a device for washing laundry by rotating the drum by the driving force of the motor in a state in which detergent, washing water and laundry are put into the drum. The drum washing machine is less damage to the laundry and the laundry is not tangled well, knocking and rubbing has the advantage of producing a laundry effect.

Hereinafter, with reference to the accompanying Figure 1 with respect to the conventional drum washing machine will be described in detail.

1 is a block diagram showing the configuration of a conventional drum washing machine.

Referring to FIG. 1, the drum washing machine includes a cabinet 1 having a laundry inlet formed on a front surface thereof, a door 2 installed to be opened and closed at a laundry inlet of the cabinet 1, and storing wash water in the cabinet. Tub 10 is installed so as to, the drum 20 is rotatably installed in the tub 10, and the motor device 30 is installed in the tub 10 to transfer the driving force to the drum 20 It is configured to include.

The motor device 30 applies an indirect driving method for rotating the drum 20 by transmitting the driving force generated from the motor to the washing shaft by the belt, or directly transmitting the driving force generated from the motor to the washing shaft. It is also possible to apply a direct drive method that rotates).

The drying duct 40 is installed on the tub 10. In this case, a blowing fan 42 and a drying heater 44 are built in the drying duct 40 to discharge hot air. One end of the drying duct 40 is installed in communication with one side of the tub (10).

In addition, the tub 10 is provided with a condensation duct 50 to communicate with the drying duct (40). At this time, one end of the condensation duct 50 is connected to the outer surface of the tub 10, the other end of the condensation duct 50 is connected to the drying duct (40). The condensation duct 50 is provided with a water supply for supplying cooling water to condense moisture in the air.

In addition, in order to heat the wash water supplied to the tub 10, the washing water heating heater 110 is installed in the center of the lower side of the tub.

The drum washing machine configured as described above is rotated when the motor device 30 is operated so that the laundry is stirred while the laundry inside the drum 20 is stirred.

In addition, the washing water is heated by the washing water heating heater 110 in order to increase the washing effect, wherein the thermistor 130 maintains the temperature of the washing water at an appropriate temperature by sensing the temperature of the washing water. .

FIG. 2 is a rear perspective view of a tub rear wall portion showing a heater fixing part of a conventional drum washing machine, in which a heater bracket 120 fixing a washing water heating heater 110 installed at a lower center portion of the tub 10 includes a tub 10. Thermistor (130) is installed at the back of the heater, and measures the temperature of the wash water is also installed next to the heater bracket (120).

In addition, a lead wire connection terminal 122 for supplying power to the washing water heating heater 110 is provided on an outer surface of the heater bracket 120.

In addition, the lead wires 132 connected to the lead wire connection terminals 122 of the heater bracket 120 and the lead wires 132 connected to the thermistor 130 may have a tub 10 by a strap 140. It is tied to the fastening hole (12) formed in the rear of the selection is made.

Incidentally, reference numeral E denotes a ground wire.

However, such a conventional art has the following problems.

First of all, the lead wires are held by using separate straps to hold the lead wires, which increases the labor of the assembly line.

In particular, one strap is not easily organized, so it is necessary to tie more than one place in order to organize them.

On the other hand, when the lead wire 132 of the washing water heating heater 110 and the thermistor 130 is bundled with the strap 140 as described above has the following disadvantages.

First, when the lead wires come in contact with the lower outer surface of the tub, which is a part where the heater is installed, due to the vibration generated during the washing process, the heat of the washing water heating heater may be conducted, and the coating of the lead wire may be thermally deformed. When heat is conducted to the thermistor lead wires, the measured values of the thermistor may be affected, which may cause a malfunction of the device.

Second, there is a problem that the lead wires are removed by the vibration generated in the tub of the washing machine. In particular, when the lead wire connected to the thermistor is removed, the temperature of the wash water is not sensed, and thus the wash water is overheated or the wash water heating heater is overheated, which may cause a safety accident and a failure of the device.

Third, the condensation duct is coupled to the upper side of the heater bracket, there is a problem that the failure or malfunction of the device is caused when the water falls in the connection terminal, such as the condensation duct and the coupling portion of the tub.

The present invention has been made to solve the above problems, improve the fixing structure for the lead wire connected to the heater and thermistor and exposed to the rear wall of the tub, so that the lead wire can be easily and safely organized and fixed There is a purpose.

In order to achieve the above object, the present invention is installed so as to measure the temperature of the wash water in the vicinity of the heater for washing water heating heater and heater installed inside the tub through the rear wall portion of the tub. A drum washing machine having a thermistor; The lead wire fixing structure of the drum washing machine is provided with a fixing means for fixing a lead wire connected to the washing water heating heater and thermistor installed around the tub rear wall heater and the thermistor.

On the other hand, the fixing means, the guide ribs protruding toward the tub rear side around the heater fixing portion and at least one projection formed to protrude to the lower side of the guide ribs, the lead wire between the guide ribs and the projections Is fitted and fixed.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the lead wire fixing structure of the present invention will be described in detail.

In addition, in the following description, the same parts as those of the prior art among the components related to the leadwire fixing structure of the present invention will be given the same reference numbers with reference to the above-described prior art according to FIGS. do.

3 is a view showing a lead wire fixing structure of a drum washing machine according to the present invention.

First, the washing water heating heater 110 (see FIG. 1) is installed at a lower portion of the inside of the tub 210. In addition, the washing water heating heater 110 (see Fig. 1) is fixed to the tub by the heater bracket 220 is electrically connected to the lead wire.

In addition, a thermistor 230 for measuring the temperature of the washing water contained in the tub 210 is fixed to the side of the heater bracket 220 at a predetermined interval.

The ground wire E is connected to the center portion of the heater bracket.

Therefore, the washing water heating heater 110 (see FIG. 1) is fixed to the heater bracket 220, and lead wires 224 are connected to the connection terminal 222 formed on the heater bracket 220 to control the controller (not shown). ) And a power supply (not shown), the thermistor 230 is fixed to the side of the heater bracket 220, the lead wire 232 is connected to the rear of the heater bracket 220 is connected to the control unit.

In addition, the upper side of the heater bracket 220 and thermistor 230 is formed with a guide rib 240 protruding rearward to cover the heat bracket and thermistor as a whole.

That is, the guide ribs 240 may cover the upper part of the heater bracket 220 and thermistor 230 as a whole to prevent the water droplets from the condensation duct 250 falling on the heater bracket 220 and the thermistor 230. It is preferably formed to cover.

In addition, a plurality of protrusions 242 are formed below the guide rib 240 to be spaced apart from the rib 240 by a predetermined interval.

Here, the spaced apart from the protrusion 242 and the guide rib 240 is preferably a degree corresponding to the thickness of the lead wire 232 of the thermistor (230).

In addition, the protrusion 242 is preferably to have a sufficient length behind the tub, more specifically, at least the length of the combined diameter of the lead wires to be fixed.

In addition, the protrusion 242 and the guide rib 240 is preferably formed integrally with the tub 210 in the manufacturing process of the tub 210, for this purpose, the tub 210 is made of a synthetic resin material desirable.

Therefore, the thermistor 230 or the lead wires 224 and 232 of the heater are inserted and fixed between the protrusion 242 and the guide rib 240.

Alternatively, as shown in FIG. 3B, the lead wires of the lead wires 232 of the thermistor 230 and the washing water heating heater 110 (see FIG. 1) may be disposed between the protrusions 242 and the ribs 240. 224) All may be inserted and fixed.

In addition, the guide ribs 240 preferably have at least two left and right ends formed in an arc shape so that water droplets dropped from the upper portion of the tub easily escape from the heater and thermistor installation area on the upper surface of the guide ribs.

On the other hand, in the above embodiment, a rib was formed in the upper portion of the heater bracket and the thermistor and the structure of fixing the lead wire with a protrusion formed at a predetermined interval below the rib was described, the thermistor lead of the drum washing machine of the present invention According to another embodiment of the wire fixing structure, the lead wires may be fixed by only a plurality of protrusions without ribs being formed. This will be described below.

Figure 4 is a view showing another embodiment of the thermistor lead wire fixing structure of the drum washing machine of the present invention.

First, a plurality of protrusions 340 are formed around the upper side of the heater bracket 320 and the thermistor 330 formed on the lower rear side of the tub 310. At this time, the protrusion 340 is formed in a pair of two protrusions 340 formed to be spaced apart at regular intervals up and down, it is preferable that the protrusion 340 is formed in a plurality of sets.

In addition, the protrusion 340 is spaced apart up / down preferably corresponds to the thickness of the lead wire 332 of the thermistor 330.

Accordingly, the lead wire 324 connected to the lead wire 332 or the heater bracket 320 of the thermistor 330 may be inserted and fixed between the protrusions 340.

Since the structure, operation | movement, etc. with respect to the remainder in this embodiment are the same as the above-mentioned embodiment, detailed description is abbreviate | omitted.

As described above, according to the thermistor lead wire fixing structure of the drum washing machine of the present invention, the following effects are obtained.

First, since the lead wire is fixed to the rear wall of the tub so that it does not come into contact with the bottom of the tub, the heat of the heater is not conducted and there is no risk of damaging the coating of the lead wire. Can be improved.

Second, since the lead wires are fixed to the rear of the tub so as not to vibrate relative to the tub, there is no fear that the lead wires are removed, thereby further improving the reliability of the device.

Third, since water droplets falling from the upper side such as condensation ducts are blocked by the guide ribs to protect the connection terminals, there is an effect that there is no fear of malfunction or malfunction of the device due to water droplets.

Fourth, unlike the prior art that was tied together using a strap, it is possible to easily organize and fix the lead wire without the strap, reducing the labor and work time in the assembly line.

1 is a cross-sectional view showing the structure of a conventional drum washing machine.

Fig. 2 is a perspective view showing a conventional heater fixing part, and a tub rear wall part side main part perspective view.

3a and 3b is a perspective view of the tub rear wall side portion showing the lead wire fixing structure according to an embodiment of the present invention,

3A is a perspective view illustrating a state in which a lead wire connected to a thermistor is fixed

Figure 3b is a perspective view showing a state in which both the lead wire and ground wire connected to the washing water heater and thermistor is fixed

Figure 4 is a perspective view showing another embodiment of the leadwire fixing structure of the present invention.

* Description of the symbols for the main parts of the drawings *

210: Tub 220: Heater Bracket

240: guide rib 242: protrusion

Claims (7)

 A drum washing machine having a washing water heating heater which is installed inside the tub through a tub rear wall and a thermistor which is installed to measure the temperature of the washing water in the vicinity of the washing water heating heater of the tub rear wall; And a fixing means for fixing a lead wire connected to the washing water heating heater and thermistor around the washing water heating heater and thermistor installed at the rear wall of the tub. The method of claim 1, wherein the fixing means, The fixing means may include a guide rib formed to protrude toward the rear of the tub around an upper side of the tub rear wall portion on which the washing water heater is installed, and at least one protrusion formed to protrude from the lower side of the guide rib. Lead wire fixing structure of the drum washing machine, characterized in that the lead wire is inserted and fixed between the guide rib and the projection. The method of claim 2, The guide rib is a lead wire fixing structure of the drum washing machine, characterized in that it is formed to have a width covering the entire heater bracket and thermistor for installing the heater for washing water heating. The method of claim 2 or 3, The guide rib has a lead wire fixing structure of a drum washing machine, characterized in that at least the left and right both ends are formed in an arc shape. The method of claim 1, The fixing means is composed of a plurality of protrusions protruding toward the tub rear side around the heater fixing portion, the lead wire fixing structure of the drum washing machine, characterized in that the lead wire is sandwiched between the protrusion and the projection. The method of claim 1, The protrusion and the guide rib is a lead wire fixing structure of the drum washing machine, characterized in that formed integrally with the tub. The method according to claim 1 or 6, The tub and the guide ribs and protrusions formed thereon is a lead wire fixing structure of a drum washing machine, characterized in that made of a synthetic resin material.