JP3563622B2 - Refrigerator drawer door - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drawer door of a refrigerator.
[0002]
[Prior art]
In recent years, there have been products that emphasize ease of use, such as refrigerators having various temperature zones such as freezing, vegetables, etc. arranged on a drawer door with improved storability and a user-friendly drawer door.
[0003]
2. Description of the Related Art As a drawer door of a conventional refrigerator, there is one disclosed in JP-A-2-106686.
[0004]
Hereinafter, a drawer door of the above-mentioned conventional refrigerator will be described with reference to the drawings.
[0005]
11 is a conventional refrigerator, FIG. 12 is a horizontal vertical sectional view, and FIG. 13 is a front vertical sectional view of a refrigerator.
[0006]
In FIG. 11, 1 is a refrigerator main body, 2 is a drawer door, and 3 is a revolving door. Reference numeral 4 denotes an operation unit for operating the drawer door 2. 12 and 13, reference numeral 5 denotes an outer box, 6 denotes an inner box, and 7 denotes a heat insulating material filled in the outer box 5 and the inner box 6. To form 8 is a case provided on the drawer door 2, 9 is a frame supporting the drawer door 2, and 10 is a flange provided on the upper surface of the frame.
[0007]
Reference numeral 11 denotes a front roller fixed to the inner side wall of the refrigerator 1 body, on which the frame 10 is supported, and 12, a rail provided behind the frame 9. Reference numeral 13 denotes a rear roller provided behind the frame 9. Reference numeral 14 denotes a rotary shaft provided below the case 8 in the front-rear direction. Reference numeral 15 denotes a drive motor, which is an electric motor provided at the rear, and is fitted to the rotary shaft 14. Reference numeral 16 denotes a bearing provided at the front end of the rotary shaft 14, and the shaft 14a of the rotary shaft 14 is fitted. Reference numeral 17 denotes a door support frame provided below the case 8, reference numeral 18 denotes a rubber roller, reference numeral 19 denotes an upper roller, and reference numeral 20 denotes a guide roller.
[0008]
The operation of the drawer door of the refrigerator configured as described above will be described below.
[0009]
First, when the switch is turned on by the operation unit 4, the drive motor 15 rotates, and the rotational force is transmitted to the rotary shaft 14 via the shaft 15 a of the drive motor 15. When the rotating shaft 14 rotates, the rubber roller 18 disposed thereon rotates. When the rubber roller 18 rotates, the force acts in the direction of the shaft 15a, and the drawer door 2 is pushed out.
[0010]
[Problems to be solved by the invention]
However, according to the conventional configuration, there is a drawback that it is difficult to obtain a force required for releasing the close contact between the gasket and the refrigerator body because the guide slide is performed only by the roller.
[0011]
The present invention solves the conventional problem, and an object of the present invention is to efficiently open a drawer door of a refrigerator.
[0012]
In addition, the above-described conventional configuration has a drawback that the amount of storage in the case is reduced because the specification is provided below the case, and the mounting position is also limited.
[0013]
Another object of the present invention is that the configuration can be made compact and can be installed in any position of the drawer.
[0014]
[Means for Solving the Problems]
To achieve this object, the drawer door of the refrigerator of the present invention includes a drawer door housed in the main body so as to be freely taken in and out, a case installed in the drawer door, and a support frame provided to support the drawer door. A timing belt provided above the support frame, and an automatic open unit fixed to a refrigerator body operating on the timing belt, wherein the automatic open unit includes a slide pin for pushing out the drawer door, and the timing belt. The roller operating above, and the driving means for driving the slide pin and the roller by one means are integrally configured as a unit.
[0015]
Thus, the drawer door can be opened efficiently, and the drawer door can be installed at any position of the refrigerator. Also, since the force of the driving means is transmitted to the two directions of the slide pin and the roller via the gears, the driving means can be operated by one driving means, whereby the automatic open unit can be made compact.
Further, the drawer door can be reliably driven because the roller is formed in a gear shape and meshes with the timing belt.
[0018]
In addition, since the voltage of the driving means is gradually lowered at the end of opening the drawer door, the drawer case can be softly stopped.
[0019]
In addition, a sensor is provided in the automatic opening unit, the position of the drawer case is detected by a magnet provided on the timing belt, and the driving means is stopped when the drawer door is locked.
[0020]
Thereby, safety of the device is achieved.
[0021]
After the drawer case is opened, the driving means is reversed, and the gear transmitting the force of the driving means to the slide pin is reversed to the intermittent part.
[0022]
Thereby, safety when closing the door is achieved.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
The drawer door of the refrigerator according to the present invention includes a drawer door housed in the main body so as to be freely taken in and out, a case installed in the drawer door, a support frame provided to support the drawer door, and an upper part of the support frame. The provided timing belt, comprising an automatic opening unit fixed to the refrigerator body that operates on the timing belt, the automatic opening unit is a slide pin for pushing out the drawer door, and a roller that operates on the timing belt, The slide pin and the driving means for driving the roller by one means are integrally formed as a unit. To remove the close contact between the drawer door and the gasket of the refrigerator body, use the pushing force of the slide pin, Is performed efficiently by the roller. An automatic open unit can be made compact.
[0025]
Further, since the roller is formed in a gear shape and meshed with the timing belt, the drawer door can be driven reliably.
[0026]
Further, after the operation of the driving means is completed for a predetermined time, the voltage of the driving means is gradually reduced, so that the drawer case is softly stopped.
[0027]
Further, a sensor is provided in the automatic open unit, the position of the drawer case is detected based on the positional relationship with the magnet provided on the timing belt, and the driving means is stopped when the drawer door is locked, so that safety can be achieved.
[0028]
Also, after the drawer case is opened, the driving means is reversed, and the gear transmitting the force of the driving means to the slide pin is reversed to the intermittent part, so that when the drawer door is closed, there is no meshing of the gears and the gear is closed smoothly, There is no equipment damage.
[0029]
【Example】
Hereinafter, an embodiment of a drawer door of a refrigerator according to the present invention will be described with reference to the drawings. In addition, about the same structure as a conventional one, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0030]
(Example 1)
FIG. 1 is a vertical sectional view of a drawer door of a refrigerator according to Embodiment 1 of the present invention.
[0031]
FIG. 2 is a longitudinal sectional view of the refrigerator of the embodiment.
[0032]
1 and 2, reference numeral 21 denotes a refrigerator main body, 22 denotes a drawer door, 23 denotes a switch for starting automatic opening of the drawer door 22 attached to the front of the drawer door 22, and 24 denotes a refrigerator main body attached to the back of the drawer door. 21 is a gasket that is in close contact with 21 and does not allow cold air in the refrigerator to escape. Reference numeral 25 denotes a support frame fixed to the drawer door 22, reference numeral 26 denotes a timing belt disposed on the support frame 25, and reference numeral 27 denotes an automatic open unit which is installed inside the refrigerator main body 21 and slides on the timing belt 26 ( (Hereinafter referred to as an open unit).
[0033]
Reference numeral 28 denotes a slide pin provided in the open unit 27 for detaching the refrigerator main body 21 and the gasket 24 from each other. Reference numeral 29 denotes a roller provided in the open unit 27 and slides on the timing belt 26. Reference numeral 30 denotes an open roller. Drive means such as a motor provided in the unit 27 to drive the slide pins 28 and the rollers 29. Reference numeral 31 denotes a case provided on the drawer door 22.
[0034]
The operation of the automatic opening apparatus configured as described above will be described below. When the switch 23 is pressed, the driving means 30 operates, and the force is transmitted to the slide pin 28 and the roller 29, and the slide pin 28 pushes the drawer door 22 to release the close contact between the gasket 24 and the refrigerator main body 21. The drawer door 22 is opened by sliding.
[0035]
As described above, since the drawer door is opened by pushing the slide pin 28 and sliding the roller, the efficiency is high. Further, since the timing belt 26 is provided on the support frame 26, the timing belt 26 can be installed at any position of the drawer door of the refrigerator.
[0036]
(Example 2)
FIG. 3 is a longitudinal sectional view of a drawer door of a refrigerator according to Embodiment 2 of the present invention.
[0037]
In FIG. 3, reference numeral 32 denotes a worm installed on the shaft 30a of the driving means 30 to change the rotation direction of the driving means 30, 33 denotes a pinion, and 34 denotes a branch gear for transmitting the force from the pinion 33 in two directions. A gear 35 transmits the force from the branch gear 34 to the roller 29. Reference numeral 36 denotes a gear with a latch for transmitting the force from the branch gear 34 to the slide pin 28, and a latch is provided in part. Reference numeral 37 denotes an extruding means for extruding the slide pin 28 by a predetermined distance, and a latch is provided so as to engage with the latch of the gear 36 with a latch. Reference numeral 38 denotes an axis for the slide pin 28 to slide.
[0038]
The operation of the drawer door of the refrigerator configured as described above will be described below. The direction of rotation of one drive means 30 is changed by the worm 32 and transmitted to the branch gear 34, the gear 35 and the roller 29, and from the branch gear 34, the gear 36 with a latch, the pushing means 37, and the slide pin The force is transmitted to.
[0039]
As described above, since the force of the driving means 30 is transmitted to the slide pin 28 and the roller 29, it is possible to operate simultaneously. Further, the driving means 30 can be used efficiently, and the open unit 27 can be made compact.
[0040]
(Example 3)
FIG. 4 is a vertical sectional view of a drawer door of a refrigerator according to Embodiment 3 of the present invention.
[0041]
In FIG. 4, reference numeral 39 denotes a gear-shaped gear roller, and reference numeral 40 denotes a mountain-shaped timing belt provided on the support frame 25, which has a shape that meshes with the gear roller 39.
[0042]
The operation of the automatic opening apparatus configured as described above will be described below.
[0043]
When the force from the driving means 30 is transmitted to the gear roller 39, the gear roller 39 slides on the mountain-shaped timing belt 40 in a meshing manner, so that the gear roller 39 slides without rattling. Further, even when the refrigerator main body 21 is inclined due to a variation in the installation state, the refrigerator main body 21 can be slid reliably because they are engaged with each other.
[0044]
(Example 4)
FIG. 5 is a vertical sectional view and a control block diagram of a drawer door of a refrigerator in a fourth embodiment of the present invention. FIG. 6 is a flowchart in the embodiment.
[0045]
In FIG. 5, reference numeral 41 denotes switch determination means for determining that the switch 23 has been turned ON, reference numeral 42 denotes electric motor control means for driving the drive means 30, and reference numeral 43 denotes control time measurement for measuring the drive time of the drive means 30. And 44 is a means for determining the control time. Reference numeral 45 denotes a voltage varying means for varying the voltage of the driving means 30.
[0046]
Next, control will be described using a flowchart. In step 101, the switch determining means 41 determines whether or not the switch 23 is turned on. If the switch is turned on, the driving means 30 is operated in step 102. The force of the driving means 30 is transmitted to the worm 32, the pinion 33, the branch gear 34, the gear 35, the gear 36 with a latch, and finally to the slide pin 28 and the gear roller 39. The slide pin 28 slides on the shaft 38 and is pushed out by a certain size when the latch of the gear 36 with latch and the latch of the pushing means 37 are engaged with each other, and pushes out the drawer door 22. At the same time, the gear roller 39 slides on the angled timing belt 40 to open the drawer door 22.
[0047]
Next, in step 103, the drive time of the drive means 30 is measured by the control time measurement means 43, and in step 104, it is determined by the control time determination means 44 whether or not a predetermined time has been exceeded. If the predetermined time has not been exceeded, the operation of the driving means 30 is continued, and if it has exceeded, the voltage is gradually reduced by the voltage varying means 45 in step 105, and the driving means 30 is turned off in step 106.
[0048]
Because of the above control, the drawer door stops softly.
[0049]
(Example 5)
FIG. 7 is a vertical sectional view and a block diagram of a drawer door of a refrigerator showing a fifth embodiment of the present invention, and FIG. 8 is a flowchart of the fifth embodiment.
[0050]
In FIG. 7, reference numeral 46 denotes a sensor provided below and forward of the opening device 27, and reference numeral 47 denotes a magnet provided above the support frame 25 and behind the mountain-shaped timing belt 40. The sensor 46 and the magnet 47 are provided so that the positions thereof coincide with each other when the drawer door 22 is fully opened and locked. 48 is a door lock detecting means for detecting that the drawer door is locked, and 49 is a door lock determining means for determining that the door is locked.
[0051]
Next, control will be described using a flowchart. After the voltage is gradually lowered by the voltage varying means 45 in step 205, the position of the drawer door 20 is detected by the door lock detecting means 48 from the positional relationship between the sensor 46 and the magnet 47 in step 106, and in step 107, the drawer door The door lock determining means 49 determines whether or not the door 22 is fully opened and locked. When the drawer door 22 is locked, the driving means 30 is stopped.
[0052]
With the above operation, when the drawer door 22 is locked, the driving means 30 also stops, which is economical and safe. The drawer door 22 can be opened according to the load of food by setting the position of the magnet 47 in the middle of the mountain-shaped timing belt 40 and changing the voltage according to the elapsed time there.
[0053]
(Example 6)
FIG. 9 is a vertical sectional view and a block diagram of a drawer door of a refrigerator showing a sixth embodiment of the present invention, and FIG. 10 is a flowchart of the sixth embodiment.
[0054]
In FIG. 9, reference numeral 50 denotes an electric motor reversing means.
[0055]
Next, control will be described using a flowchart. After the door lock determining means 49 determines whether the drawer door 22 has been locked in step 107, if the drawer door 22 is locked, in step 110, the electric motor reversing means 50 drives the intermittent portion 36b of the latched gear 36 to the driving means. Reverse 30. This prevents the latch 36 a of the gear 36 with latch from engaging with the latch 37 a of the pushing means 37. After that, the driving means 30 is stopped in step 111.
[0056]
Since the operation described above is performed, the latch of the gear 36 with a latch does not engage with the latch of the pushing means 37, so that no load is applied when the drawer door 22 is closed, and the device is not damaged. In addition, the reverse rotation of the driving means 30 can be applied to control for closing the drawer door 22.
[0057]
【The invention's effect】
The automatic open unit fixed to the refrigerator main body that operates on the timing belt provided above the support frame drives the slide pin for pushing out the drawer door, the roller that operates on the timing belt, and the slide pin and the roller by one means. The drive means for causing the drawer to be integrated as a unit makes it possible to use the force for pushing out the drawer and the force for sliding the drawer separately, so that it is efficient and the automatic open unit can be made compact.
[0059]
Further, since the roller is formed in a gear shape and meshes with the timing belt, the drawer door can be slid reliably.
[0060]
Further, after the operation of the driving means is completed for a predetermined time, the voltage of the driving means is gradually reduced, so that the drawer case can be stopped softly.
[0061]
In addition, a sensor is provided in the automatic open unit, the drawer case position is detected based on the positional relationship with the magnet provided on the timing belt, and the driving means is stopped when the drawer door is locked, which is safe.
[0062]
Further, after the drawer case is opened, the driving means is reversed, and the gear for transmitting the force of the driving means to the slide pin is reversed to the intermittent portion. Therefore, no load is imposed when the drawer door is closed, which is safe.
[Brief description of the drawings]
1 is a longitudinal sectional view of a main part of a drawer door of a refrigerator according to a first embodiment of the present invention; FIG. 2 is a longitudinal sectional view of a drawer door of the refrigerator of the embodiment; FIG. 4 is a vertical sectional view of a refrigerator door according to a third embodiment of the present invention. FIG. 5 is a vertical sectional view and a block diagram of a refrigerator drawer door according to a fourth embodiment of the present invention. FIG. 7 is a longitudinal sectional view and a block diagram of a refrigerator door according to a fifth embodiment of the present invention. FIG. 8 is a flowchart of the embodiment. FIG. 9 is an embodiment of a refrigerator door according to the present invention. FIG. 10 is a flow chart of the same embodiment. FIG. 11 is a perspective view of a conventional refrigerator. FIG. 12 is a vertical cross-sectional view of a drawer door of a conventional refrigerator. Front view of drawer door ]
22 Drawer door 25 Support frame 26 Timing belt 27 Automatic open unit 28 Slide pin 29 Roller 30 Drive means 39 Gear roller 40 Mountain-shaped timing belt 46 Sensor 47 Magnet

Claims (5)

A drawer door housed in the main body so as to be freely taken in and out, a case installed in the drawer door, a support frame provided to support the drawer door, a timing belt provided above the support frame, and the timing An automatic open unit fixed to a refrigerator main body operating on a belt is provided . The automatic open unit includes a slide pin for pushing out the drawer door, a roller operating on the timing belt, the slide pin and the roller as one. refrigerator drawer door, characterized in that integrally configured and drive means for driving the means as a unit. The drawer door of a refrigerator according to claim 1 , wherein the roller is formed in a gear shape, and meshes with the timing belt to be surely driven. 4. The drawer door of a refrigerator according to claim 2 , wherein after the operation of the drive means has been completed for a predetermined time, the voltage of the drive means is gradually lowered to softly stop the drawer case. A sensor provided below in the automatic open unit detects the drawer case position by the magnet provided on the timing belt, the drawer door claim 1, characterized in that to stop the drive means when the lock of claim 3 A drawer door for a refrigerator according to any one of the preceding claims. The drawer for a refrigerator according to any one of claims 1 to 4 , wherein after the drawer case is opened, the driving means is reversed, and the gear for transmitting the force to the slide pin is reversed to the intermittent portion. door.

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