KR20080090043A - Door opener of washing machine - Google Patents

Abstract

The present invention relates to a door opening and closing device of the washing machine, and more specifically, the opening and closing unit is installed on the handle of the front end of the washing machine door when the user operates the opening and closing unit after holding the handle of the door, the opening and closing unit is seated on the top cover or Is separated, and relates to a door opening and closing device of the washing machine to determine the opening and closing of the washing machine door by detecting the contact with the opening and closing unit through the detection switch.

The present invention is installed on one side of the washing machine, the top cover is installed door; An opening / closing unit mounted to a front end of the door and locking or releasing the door when the door is opened and closed; And a sensing switch installed at the top cover and detecting opening / closing of the door depending on whether the door unit is in contact with the opening / closing unit.

Description

Door opening and closing apparatus of washing machine

1 is a plan view of a washing machine door according to an embodiment of the present invention,

2 is a cross-sectional view of the washing machine door opening and closing apparatus when the washing machine door closing according to the embodiment of the present invention,

3 is a cross-sectional view of the washing machine door opening and closing apparatus when the washing machine door is opened according to an embodiment of the present invention;

4 is a cross-sectional view of the top cover of a washing machine according to an embodiment of the present invention.

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

10: top cover 20: door

21: upper part 22: lower part

23: handle 24: opening and closing unit

24a: fixed support 24b: movable support

24c: elastic member 24d: hook

24e: hinge 30: control panel

40: detection switch 50: fixed jaw

H: home

The present invention relates to a door opening and closing device of the washing machine, and more specifically, the opening and closing unit is installed on the handle of the front end of the washing machine door when the user operates the opening and closing unit after holding the handle of the door, the opening and closing unit is seated on the top cover or Is separated, and relates to a door opening and closing device of the washing machine to determine the opening and closing of the washing machine door by detecting the contact with the opening and closing unit through the detection switch.

In general, a washing machine is programmed in a microcomputer for washing and rinsing, draining and dehydrating strokes, and the laundry is automatically washed through a series of programmed strokes.

The conventional washing machine having such a function is a water tank installed inside the housing and the wash water is stored, a rotating tank rotatably installed in the water tank, and a dewatering hole perforated throughout the wall surface, and a pulsator disposed at the bottom of the rotating tank so as to be rotated forward and backward. And a driving device for simultaneously driving the rotating tub and the pulsator or only the pulsator, and a top cover covering the upper part of the housing.

The top cover is provided with an inlet formed so that laundry can be put out and taken out of the rotating tub, and a door hinged to open and close the inlet. Therefore, by holding the handle to lift the door upwards, the opening can be opened to put or take out the laundry.

However, in the conventional washing machine, since the door is easily opened without any special attention, children and the like can be operated without permission during washing and dehydration administration. In particular, recently, a washing machine that implements washing by heating washing water stored in a water tank through an electric heater is commercially available, and if a door is suddenly opened without attention while the washing process is in progress, it may be burned by hot steam.

Accordingly, the door is further provided with a device for detecting the opening and closing of the door. That is, the door structure of the pulsator washer is composed of a door upper part, a door lower part, a handle formed to open the door by hand, and a detection switch for detecting the opening and closing of the door.

When the door of the washing machine configured as described above is lifted by the handle, the upper part of the door and the lower part of the door are raised together. At this time, the opening and closing of the door is detected by the magnet sensor on the upper side of the door and the magnet.

Such a pulsator washing machine has a problem that it is difficult to secure a minimum operating safety distance of 50 mm when opening and closing an existing door when the opening and closing of the door is detected by a magnet contact method of the inner hinge part.

In addition, when the door is not completely closed and the door is opened within 50 mm (for example, when the door is locked by laundry or foreign material), the washing machine incorrectly recognizes that the door is closed. There is a risk of malfunction.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to quickly and accurately detect the opening and closing of the door by opening and closing the door of the washing machine using the opening and closing unit formed on the front end of the washing machine door. It is possible to provide, and to provide a door opening and closing device of the washing machine easy to open and close the washing machine door.

Another object of the present invention is formed of a hook connected to the opening and closing unit formed on the door handle of the washing machine is the washing machine that can detect the minimum opening (within 12mm) of the door by detecting the opening and closing of the door according to the contact between the hook and the detection switch. To provide a door opening and closing device.

Another object of the present invention is to provide a door opening and closing device of a washing machine that can reduce the length of a lead wire by mounting a hook, a sensing switch, and the like below the door adjacent to the control panel.

Technical means according to the present invention for achieving the above object is a top cover is installed on one side of the washing machine, the door is installed; An opening / closing unit mounted to a front end of the door and locking or releasing the door when the door is opened and closed; And a sensing switch installed at the top cover and detecting opening / closing of the door depending on whether the door unit is in contact with the opening / closing unit.

According to the present invention, a button for opening and closing the washing machine door is provided on the door handle, and the door is detected as the hook connected to the button and the detecting switch for detecting the opening and closing of the door are in contact with each other. It can be used to reduce the length of lead wires and quickly detect the door's minimum opening (within 12mm).

In addition, since the door is quickly detected when the washing machine is operated, the driving and water supply of the motor can be stopped quickly, thereby preventing the risk factors in advance, thereby increasing safety.

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

1 is a plan view of a washing machine door according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the washing machine door opening and closing device when the washing machine door closed, Figure 3 is a sectional view of the washing machine door opening and closing device when the washing machine door opening, Figure 4 is a washing machine Sectional view of the top cover.

The top cover 10 is mounted on the upper side of the washing machine body, the top cover 10 is formed with an inlet formed to take out the laundry into the rotating tub, one side of the top cover 10 is hinged to open and close the inlet Door 20 is mounted.

In addition, one side of the top cover 10 is provided with a control panel 30 for the user to display the function input and the remaining time for washing control, such a control panel 30 is formed with a plurality of buttons on the surface It is equipped with a display window such as LCD or LED which shows the remaining time during washing or dehydration and drying conditions.

In addition, the top cover 10 has a groove (H) is formed at a position corresponding to the position where the hook 24d is formed so that the hook 24d formed at the tip of the door can be seated, as shown in FIG. When 24d is seated in the groove H and the door 20 is closed, a fixing jaw 50 is formed to fix the hook 24d so that the door 20 does not open by shaking due to the washing machine. In addition, the detection switch 40 is installed to detect the contact of the hook 24d according to the opening and closing of the door 20 to determine the opening and closing of the door.

Here, the sensing switch 40 is mounted on the front end of the top cover 10 and installed adjacent to the control panel 30 to reduce the length of the lead wire, and the minimum opening of the door (within 12mm). Can be detected quickly.

As shown in FIG. 1, the door 20 formed on the top cover 10 is connected to one side of the top cover 10 by a hinge (not shown), the upper part 21 moving between predetermined angles, and the top cover. The lower part 22 which is coupled by the other side of the upper part 21 and the hinge (not shown) of the part connected to the 10 and moves between predetermined angles, and is mounted on the upper end of the lower part 22 to open and close the door 20. It consists of a handle 23 to facilitate.

That is, the handle 23 when the user grabs the handle and lifts the door 20 upward, the inlet is opened to put or take out the laundry.

Here, the inside of the handle 23 is equipped with a lever-type button 24, which is an opening and closing unit as shown in Figs.

That is, when the user puts in or takes out the laundry, the user puts his or her hand on the handle 23, and at this time, the lever-type button 24 mounted inside the handle 23 operates, and the lower end of the door 20 is operated. At the same time, the hook 24d of the opening / closing unit formed at one side of the handle 23 is in contact with the sensing switch 40.

After that, when the door is lifted upward by the user, the hook 24d mounted at the tip of the door 20 slides out of the top cover 10 through the groove H formed in the top cover 10, and the top cover ( 10) exit the fixed jaw 50 formed in.

At this time, the hook 24d is not in contact with the sensing switch 40, and thus the sensing switch transmits a door opening signal according to the non-contact to a control unit (not shown) of the control panel.

In addition, when the user performs laundry after putting the laundry, the user puts his hand on the handle 23, and at this time, the lever-type button 24 mounted on the handle 23 is operated. As shown, the hook 24d mounted at the tip of the door 20 slides into the top cover 10 through the groove H formed in the top cover 10, and the fixing jaw 50 formed in the top cover 10 is formed. ) And the hook 24d formed at one side of the handle 23 at the same time as the lower end of the door 20 is in contact with the sensing switch 40.

At this time, when the hook 24d is in contact with the sensing switch 40, the sensing switch transmits a door closing signal according to the contact to a control unit (not shown) of the control panel. The sensing switch is preferably any one of a micro switch or a hall sensor.

Accordingly, the control unit can quickly detect the opening and closing of the door during the washing machine operation, and quickly stop the driving and water supply of the motor after the detection, thereby preventing the risk factors in advance, thereby increasing safety.

In addition, the inside of the handle 23 is equipped with a lever-type button 24, wherein the lever-type button 24 is connected to the user through the hinge 24e and the fixing support 24a mounted on the upper side of the handle In accordance with the force applied by the movable support 24b for moving up and down about the hinge 24e, the fixed support 24a and the movable support 24b are connected, and if the user's force is not applied, the movable support 24b ) Is formed at the end of the spring, the elastic member (24c) for returning to the initial position and the movable support (24b) is detected by sliding through the groove (H) of the top cover 10 in accordance with the movement of the movable support (24b) The hook 24d is in contact with the switch 40 and the sensing switch 40 is prevented from being separated by the fixing jaw 50 when the door is closed.

At this time, the hook 24d slides into the top cover through the groove H formed in the top cover 10 and is seated on the fixing jaw 50 formed in the top cover 10.

Accordingly, since the door 24 and the detection switch 40 mounted at the front end of the door are in contact with each other, the door can be detected by opening and closing the door at a minimum opening (within 12 mm).

In addition, since the door is quickly detected when the washing machine is operated, the driving and water supply of the motor can be stopped quickly, thereby preventing the risk factors in advance, thereby increasing safety.

The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art without departing from the gist of the present invention as claimed in the following claims.

As described in detail above, the present invention is provided with a door handle for opening and closing the door at the front end of the washing machine door, the opening and closing unit is mounted inside the handle for detecting the door opening and closing the hook formed at the end of the opening and closing unit By contacting the sensing switch, the door can be opened and closed according to whether the sensing switch is in contact, and then the door can be quickly detected up to the minimum opening (within 12mm).

At this time, the sensing switch is provided at the tip of the top cover, and is installed adjacent to the control panel can reduce the length of the lead wire (Lead Wire).

In addition, since the door is quickly detected when the washing machine is operated, the driving and water supply of the motor can be stopped quickly, thereby preventing the risk factors in advance, thereby increasing safety.

Claims (7)

A top cover installed at one side of the washing machine and provided with a door; An opening / closing unit mounted to a front end of the door and locking or releasing the door when the door is opened and closed; And And a detection switch installed at the top cover and detecting the opening / closing of the door according to the contact with the opening / closing unit. According to claim 1, wherein the opening and closing unit Door opening and closing device of the washing machine, characterized in that the lever-type button with a hook formed on the end. The method of claim 2, wherein the top cover Door opening and closing device of the washing machine, characterized in that the groove is formed by sliding the hook is fixed to a position corresponding to the position of the hook. The method of claim 2, wherein the top cover Door opening and closing device of the washing machine, characterized in that the fixing jaw is formed to prevent the separation of the hook. According to claim 1, wherein the opening and closing unit A fixed support, a movable support connected to the fixed support and the hinge to move the hinge to the center, an elastic member for maintaining a distance between the movable support and the fixed support, and formed at the end of the movable support and seated on the top cover Door opening and closing device of the washing machine, characterized in that consisting of a hook. The method of claim 1, wherein the door Door opening and closing device of the washing machine, characterized in that the upper side is connected to the top cover, the lower side is installed on the other side of the upper portion moving between a predetermined angle around the connecting shaft, and the handle installed on the upper side of the lower portion. The method of claim 5, wherein the opening and closing unit is Door opening and closing device of the washing machine, characterized in that mounted on the handle.

Images