KR100640875B1 - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator.

The present invention, the main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; And a winding unit for winding or unwinding the power cable, and a rotating unit for rotating the winding unit in a forward or reverse direction according to the movement of the door, by winding or unwinding the power cable according to the movement of the door. Winding device for adjusting the length of: provides a refrigerator comprising a.

Therefore, according to the present invention, since the basket is automatically lifted and lifted by the lifting device, the user's convenience is improved.

In addition, there is an effect that the phenomenon that the power cable for applying electricity to the lifting device of the door is broken or pinched between the other parts is prevented.

Refrigerator, Door, Power Cable, Winding Device, Rack, Pinion

Description

Refrigerator {Refrigerator}

1 is a perspective view showing a conventional refrigerator.

FIG. 2 is a cross-sectional view illustrating main parts of the refrigerator of FIG. 1.

Figure 3 is a side longitudinal cross-sectional view schematically showing the structure of a preferred embodiment of a refrigerator according to the present invention.

Figure 4 is a perspective view showing the configuration of the lifting device for lifting the basket of the refrigerator of Figure 3;

FIG. 5 is a perspective view illustrating a winding device of the refrigerator of FIG. 3; FIG.

6 is a cross-sectional view when the door of the refrigerator of FIG. 3 is closed.

7 is a cross-sectional view when the door of the refrigerator of FIG. 3 is opened.

Figure 8 is a side longitudinal cross-sectional view schematically showing the structure of another embodiment of a refrigerator according to the present invention.

* Explanation of Signs of Major Parts of Drawings

114: power supply unit 120: lifting device

121: lift 121b: lowering jaw

122: lifting guide rail 124: drive motor

125 gear 126 drive shaft

127: drive arm 127a: roller

128a: anti-rise sensor 128b: anti-fall sensor

132: power cable 140: rail

142: first guide rail 144: second guide rail

150: winding device 151: rotating part

152: rack 153: tooth

154: pinion 155: tooth

157: winding part 158: locking hole

260: wire guide portion 262: first wire guide

264: Second wire guide

The present invention relates to a refrigerator, and more particularly, to a refrigerator capable of lifting and lowering a basket and preventing damage to a power cable for applying electricity to the lifting device of the basket.

1 and 2 of the accompanying drawings shows a conventional refrigerator, a conventional refrigerator has a plurality of upper cooling chamber (21) with a partition 17 formed along the horizontal direction in the interior of the main body (11) And a lower cooling chamber 31. An upper door 23 and a door 33 for opening and closing each chamber are installed at each front portion of the upper cooling chamber 21 and the lower cooling chamber 31. In the lower region of the main body 11, a machine room 13 in which a compressor 15 or the like is installed is formed.

The upper door 23 for opening and closing the front opening of the upper cooling chamber 21 is composed of a pair of left and right sides, each of which is configured to be rotatable with respect to the main body.

On the other hand, the upper side of the lower cooling chamber 31 is provided with a plurality of drawers 38, the upper surface is open to accommodate food therein.

In addition, the door 33 is configured to open and close the lower cooling chamber 31 while sliding along the front and rear directions of the main body 11. In order to slide the door 33, the guide rails 37 are installed at the lower side of the main body 11 and on both sides of the rear surface of the door 33 so as to be able to expand and contract in the front and rear directions.

In addition, the rear surface of the door 33 is provided with a box-shaped basket 35 whose upper surface is opened to accommodate food. The basket 35 is opened and closed while sliding forward and backward integrally with the door 33.

However, the conventional refrigerator as described above has the following problems.

When the basket is installed in the lower portion of the main body, the basket has a low position, and thus, the user has to draw out the basket and then lower or lower the posture such as bending or squatting. In particular, since it is necessary to find and withdraw the desired food from among various foods while bending the waist, the time for bending the waist is long and the user's back health has not been beneficial.

 The present invention is to solve the above problems, an object of the present invention is to open the door automatically pulled out of the basket by lifting the refrigerator so that the user can store and take out food in the basket without bending the waist. To provide.

In order to achieve the above object, the present invention, the main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; And a winding unit for winding or unwinding the power cable, and a rotating unit for rotating the winding unit in a forward or reverse direction according to the movement of the door, by winding or unwinding the power cable according to the movement of the door. Winding device for adjusting the length of: provides a refrigerator comprising a.

The rotating unit, the rack disposed along the direction of movement of the door; And a pinion meshed with the rack and rotating when the door moves. In addition, the winding part may extend from one side of the pinion. Furthermore, the winding part may include a locking hole through which the power cable passes.
The refrigerator may further include a rail connecting the main body to the door and sliding the door with respect to the main body. In this case, the power cable may be installed to pass through the rail. The winding device may be installed inside the rail.
The rail may include a first guide rail connected to the main body; And a second guide rail connected to the door to guide the movement of the door while moving along the first guide rail.
On the other hand, the refrigerator, the length is stretched in accordance with the movement of the door, it may be made of a wire guide portion that is further accommodated therein the power cable. In this case, the winding device may be installed inside the wire guide part. The wire guide unit may include a first wire guide connected to the main body; And a second wire guide fixed to the door and sliding with respect to the first wire guide as the door moves.

Therefore, according to the present invention, there is an effect that the phenomenon that the power cable for applying electricity to the door is broken or pinched between other parts is prevented.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention that can specifically realize the above object will be described.

In addition, the same components as in the prior art are given the same names and the same reference numerals for convenience of description, and detailed description thereof will be omitted.

Referring to Figures 3 to 7 describe a preferred embodiment of the refrigerator according to the present invention.

First, as shown in FIG. 3, a door 133 for opening and closing the front opening of the refrigerator main body in which the cooling chamber 112 is partitioned is installed.

The door 133 is preferably opened and closed by sliding in a forward / rear direction with respect to the refrigerator main body, and the door 133 as described above is preferably provided under the refrigerator main body.

The rail unit 140 is installed in the cooling chamber 112 of the refrigerator opened and closed by the door 133 and the door 133 for sliding forward and backward of the door 133.

The rail unit 140 includes a first guide rail 142 and a second guide rail 144. The first guide rail 142 is installed in the front and rear directions on both inner side surfaces of the main body so that the door 133 Guide the sliding movement.

In addition, the pair of second guide rails 144 is fixedly installed at both sides of the door 133 to move along the first guide rails 142.

On the other hand, the rail 140 for guiding the sliding of the door 133 may have a variety of deformations, in this embodiment divided into two of the first guide rail 142 and the second guide rail 144. In the above example, three or more divided rail portions may be used.

In addition, the door 133 is provided with a lifting device 120.

In addition, a basket 135 having a top shape is installed at a rear portion of the door 133.

The basket 135 is seated on the elevating device 120 installed below the rear portion of the door 133 and moves forward and backward together with the door 133.

In addition, the lifting device 120 is configured to automatically move up and down the basket 135 when the door 133 is opened.

As shown in FIG. 4, the elevating device 120 includes a lift 121 on which the basket 135 is seated, and an inner surface of the door 133, so as to form the lift 121. Lifting guide rail 122 for guiding the up / down movement, and the lifting unit for lifting up and down the lift 121 automatically.

In more detail with respect to the elevating device 120, the lift 121 is formed in a substantially 'L' shape, a pair of elevating guide rails whose front end is installed in the vertical direction on the inner surface of the door 133 Coupled to (122) to move up and down along the lifting guide rail (122).

Lifting unit for lifting up and down the lift 121, the drive arm 127 is installed rotatably up and down on the lower both sides of the door 133, the drive motor 124 is installed in the center of the lower end of the door 133, A drive shaft axially coupled to the drive motor 124 to rotate, a drive shaft connected to the gear unit 125 to rotate, and both ends connected to the drive arm 127 to rotate the drive arm 127. 126.

Here, the drive motor 124 is also operated by the control of the main control unit (not shown) of the refrigerator or a separate drive motor control PCB (not shown).

At the end of each of the driving arms 127, rollers 127a for rolling along the bottom of the lift 121 are installed. In addition, a lowering stopper 121b is formed on the lower surface of the lift 121 to prevent the lift 121 from falling when the driving arm 127 raises the lift.

In addition, the upper and lower portions of the lifting guide rails 122 of the door 133 are provided with a rising detection sensor 128a and a falling detection sensor 128b for limiting the rising and lowering positions of the lift 121.

On the other hand, although not shown in the drawings, the refrigerator body is preferably provided with a control button (not shown) for allowing the user to perform the opening and closing operation of the door 133 and the lifting operation of the lift 121 from the outside. Do. The control button is electrically connected to the main control unit of the refrigerator or a separate driving motor control PCB, and transmits a control signal to the main control unit according to the user's operation.

Therefore, after the door 133 is completely opened, the user operates a control button (not shown) for raising the lift 121, or when the predetermined time elapses after the door 133 is opened, the lift 121 lift operation is performed. Drive motor 124 for operation.

 Power of the drive motor 124 is transmitted to the drive shaft 126 through the gear unit 125, and the drive arm 127 is rotated upward as the drive shaft 126 rotates.

When the driving arm 127 rotates upward, the roller 121 is installed at the end of the driving arm 127 while the roller 121 moves along the lower surface of the lift 121 so that the lift 121 lifts and lowers the guide rail 122. ) And the basket 135 (see Fig. 3) is raised.

When the lift 121 rises to the position of the lift sensor 128a, the lift sensor 128a sends a signal to the main controller to stop the operation of the driving motor 124 to stop the lift 121.

At this time, the roller 127a of the driving arm 127 is supported by the lowering barrier 121b while being positioned directly in front of the lowering barrier 121b through the gentle inclined portion of the lowering barrier 121b. As a result, the driving arm 127 is prevented from rotating downward by the load of the basket 135 (see FIG. 3).

On the other hand, if the user raises the basket (refer to FIG. 3) as described above, the user stores or withdraws food in the basket 135, and the user operates the control button for the basket lowering, as opposed to the above-described drive motor The driving arm 127 rotates downward, the lift 121 descends, and the basket 135 descends.

And, as shown in Figure 3, a power cable 132 for applying electricity to the elevating device 120 provided in the door 133 is provided.

The power cable 132 is installed to be connected to the elevator 120 of the door 133 and the power supply 114 of the refrigerator main body.

In addition, since the elevating device 120 of the door 133 needs to be supplied with electricity regardless of whether the door 133 is open or closed, the power cable 132 may have the maximum opening. It is preferable to manufacture based on the length of time.

The power cable 132 may be wound or unwound according to the movement of the door 133 so that the power cable 132 does not sag downward due to gravity when the door 133 is closed. The winding device 150 is provided.

That is, the winding device 150 winds up the power cable 132 when the door 133 is closed so that the power cable 132 does not sag downward, and the power when the door 133 is opened. It is a device that can increase the length by loosening the cable 132.

Although the winding device 150 as described above may be applied in various ways, according to the preferred embodiment of the present invention, as shown in FIG. 5, the winding device 150 including the rotating part 151 and the winding part 157 is provided. Is preferably applied.

Here, the rotating part 151 rotates forward or reverse according to the sliding motion before and after the door 133 (see FIG. 3), and the winding part 157 is formed by the forward / backward of the rotating part 151. The length of the power cable 132 is adjusted by unwinding or winding the power cable 132 according to the reverse rotation.

The rotating unit 151 preferably consists of a rack 152 and a pinion 154.

The rack 152 has a longitudinal direction in the same longitudinal direction as the direction in which the door 133 (see FIG. 3) is opened and closed, that is, the front / rear direction of the refrigerator main body, and a plurality of teeth on one side along the longitudinal direction thereof. It is preferable that 153 be formed.

In addition, the pinion 154 is formed in a substantially circular shape, the tooth 155 is engaged with the teeth 153 of the rack 152 is formed on the outer peripheral surface.

In addition, the winding part 157 may have a circular cross section, and may be formed in a cylindrical shape having a predetermined width so that the power cable 132 may be wound.

In addition, the outer circumferential surface of the winding unit 157 is formed with a catching hole 158 into which the power cable 132 is inserted, and the catching hole 158 is inserted into the winding cable 132. It is preferably formed to face each other so as to penetrate in the radial direction.

In addition, the winding unit 157 is formed integrally with the pinion 154 to rotate together with the rotation of the pinion 154, the center of the cross-section is formed to have the same center as the pinion 154. desirable.

On the other hand, since the rack 152 and the pinion 154 must be relative movement, the rack 152 is installed to be fixed to the inside of the refrigerator main body, the pinion 154 is the front like the door 133 It is preferable that the door 133 is pivotally coupled to the door 133 so as to rotate while being engaged with the rack 152 and sliding backward.

At this time, the rack 152, as shown in Figure 3, does not interfere with the operation of storing the object in the basket 135 of the door 133, and also before / after the door 133 It is preferable to be installed on the side portion of the door 133 so as not to disturb the sliding movement.

In addition, one end of the power cable 132 is connected to the power supply unit 114 inside the refrigerator main body, and the other end thereof is connected to the lifting device 120 on the door 133 side.

In addition, the power cable 132 is inserted into the locking hole 158 formed in the winding portion 157 to be caught by the winding portion 157 while penetrating the winding portion 157 in the radial direction.

At this time, the power cable 132 is preferably made to pass through the winding portion 157 without winding around the outer peripheral surface of the winding portion 157 when the door 133 is opened to the maximum.

Here, the winding unit 157 will be described in more detail as follows.

As shown in FIGS. 6 and 7, the number of teeth 155 formed on the outer circumferential surface of the pinion 154 is referred to as Z, and the pinion 154 is in contact with the rack 152 while the pinion 154 rotates. The number of teeth 155 of 154 is K, and the rotational speed of the pinion 154 is N, and the following equation is established.

In addition, the radius of the cylindrical winding portion 157 is r, the diameter of the power cable 132 is d, the length of the rail portion 140 when the door 133 is opened to the maximum. If X is X, and the length of the rail 140 when the door 133 is closed is Y, the following equation is established.

Here, adding d / 2 to the radius r of the winding portion 157 of the left term of the above formula (2) is to the neutral line of the center of the power cable 132 when the power cable 132 is wound around the winding portion 157. Plus thickness.

In addition, multiplying the left term of the expression (2) by ½ means that the power cable 132 penetrates the winding part 157, so that when the winding part 157 rotates ½, the power cable 132 is This is because it is wound around the outer circumferential surface of the winding part 157.

Therefore, after substituting the above ① formula into the above ② formula and arranging the radius r of the winding unit 157, the following formula is established.

When the radius r of the winding unit 157 becomes larger than the right term in the above Equation 3, the winding portion 157 is wound around the winding unit 157 rather than the extra length of the power cable 132 generated due to the closing of the door 133. Since the length of the power cable 132 may be larger, it is preferable that the radius r of the winding part 157 has a relation equal to or smaller than the right term as follows.

On the other hand, although not shown in the drawings, on the contrary, the rack 152 is fixedly installed on the door 133 so as to slide forward / backward like the door when the door 133 is opened or closed, and the pinion ( 154 is rotatable in the refrigerator body and may be installed to be fitted to the rack 152.

Therefore, as shown in FIG. 6, when the door 133 is closed while sliding to the inside of the refrigerator main body, the pinion 154 installed on the door 133 side engages with the rack 152 installed on the refrigerator main body side. As you rotate.

At this time, since the winding part 157 is formed integrally with the pinion 154, the winding part 157 also rotates as the pinion 154 rotates.

In addition, since the power cable 132 penetrates the engaging hole 158 of the winding part 157, the power cable 132 may be connected to the winding part 157 by rotating the winding part 157. It is wound on the outer circumference, so that its length becomes short.

And, as shown in Figure 7, when the door 133 is opened while sliding to the outside of the refrigerator body, the pinion 154 is also engaged with the rack 152, as opposed to when the door 133 is closed Will rotate.

Therefore, the winding part 157 also rotates as the pinion 154 rotates, and accordingly, the length of the power cable 132 wound around the outer circumferential surface of the winding part 157 is released.

In addition, according to a preferred embodiment of the present invention, the power cable 132 and the winding device 150 is more preferably installed inside the rail unit 140 so as not to be seen from the outside.

In more detail, as shown in FIG. 3, the rack 152 of the winding device 150 is fixedly installed in the first guide rail 142, and the pinion 154 is Preferably, the door 133 is pivotally coupled to the inside of the second guide rail 144 so as to slide forward / backward and engage with the rack 152.

At this time, the rack 152 is formed from the front end to the rear end of the first guide rail 142, the pinion 154 is to be installed at the end toward the inside of the refrigerator body of the second guide rail 144 desirable.

In addition, a space penetrating the longitudinal direction is formed in the first guide rail 142 and the second guide rail 144, and the power cable 132 is not exposed to the outside of the first guide rail ( 142 and the inside of the second guide rail 144 is preferably accommodated.

Accordingly, the first guide rail 142 is fixed to the refrigerator body, and the second guide rail 144 is fixed to the door 133 and slides forward / backward like the door 133. 2 The pinion 154 installed on the guide rail 144 rotates forward / reversely while being engaged with the rack 152 according to the movement of the door 133.

Therefore, as the winding part 157 integrally formed on the pinion 154 also rotates and the door 133 moves, as shown in FIGS. 6 and 7, the power cable 132 is wound around the winding part ( 157 is wound or unrolled on the outer circumferential surface thereof to adjust the length.

In addition, although not shown in the drawings, the rack 152 is fixed to the second guide rail 144 so as to be slidable forward and backward like the door 133, and the pinion 154 is opposite to the above. The first guide rail 142 may be rotatably installed to be fixed therein.

In addition, according to another embodiment of the present invention, the power cable and the winding device may not be accommodated in the rail unit, and a wire guide part may be further provided in the refrigerator main body to accommodate the power cable and the winding device.

8 is a cross-sectional view of a refrigerator provided with a wire guide unit according to another exemplary embodiment of the present invention.

The wire guide part 260 has a sliding structure divided in multiple stages similarly to the rail part 140 (see FIG. 3) of the above-described embodiment so that the wire guide part 260 can be expanded and contracted according to the front / rear movement of the door 233. It is preferable.

The wire guide part 260 will be described in more detail. The wire guide part 260 is fixed to the first wire guide 262 and the door 233 installed in the front / rear direction from the inside of the main body. The second wire guide 264 is stretched and overlapped with the first wire guide 262 as the door 233 moves along with the sliding of the first wire guide 262.

The first wire guide 262 and the second wire guide 264 have a space therein similarly to the rail unit 140 (see FIG. 3) of the above-described embodiment, and the winding device ( 250 and power cable 232 are preferably accommodated.

The winding device 250 is integrated with the rack 252 having a plurality of teeth formed in the direction in which the door 233 is opened and closed, a pinion 254 engaged with the rack 252 and rotated, and the pinion 254. Consists of a winding unit 257 formed as.

The winding apparatus 250 as described above has the same configuration as the winding apparatus 150 described with reference to FIG. 5 in the above-described embodiment, and a detailed description thereof will be omitted.

The rack 252 of the winding device 250 is fixedly installed in the first wire guide 262, and the pinion 254 slides forward / backward like the door 233 and the rack It is preferable that the second wire guide 264 is pivotally coupled to the inside of the second wire guide 264 to be engaged with the 252.

At this time, the rack 252 is formed from the front end to the rear end of the first wire guide 262, the pinion 254 is installed at the end toward the inside of the refrigerator main body of the second wire guide 264. desirable.

Accordingly, the first wire guide 262 is fixed to the refrigerator body, and the second wire guide 264 is fixed to the door 233 to slide forward and backward like the door 233. The pinion 254 installed on the two wire guides 264 rotates forward / reversely while being engaged with the rack 252 as the door 233 moves.

Therefore, the winding part 257 integrally formed in the pinion 254 is also rotated so that the power cable 232 is wound or unwound on the outer circumferential surface of the winding part 257 in accordance with the movement of the door so that its length is adjusted. .

In addition, although not shown in the drawings, the rack 252 is fixed to the second electric wire guide 264 so as to be slidable forward and backward like the door 233, and the pinion 254 is the refrigerator main body. The first wire guide 262 may be rotatably installed to be fixed therein.

Meanwhile, the wire guide part 260 is also divided into two parts of the first electric wire guide 262 and the second electric wire guide 264 in the present embodiment similarly to the rail part 140 (see FIG. 3) of the above-described embodiment. Although described as an example, there may be various modifications such as the use of three or more divided wire guide portion.

In addition, since other components of the present embodiment are the same as the above-described embodiment, description thereof will be omitted.

Referring to the effect of the refrigerator according to the present invention described above are as follows.

First, since the basket is automatically lifted up and down after the door is opened, there is an effect that the user can store or take out food in the basket very conveniently without bending or kneeling.

Second, the power cable for supplying electricity to the electrical equipment of the door is always kept in a tight state by winding or unwinding by the winding device according to the state that the door is open or closed, so that the power cable is sag or between other parts. There is an effect of preventing the damage caused by jamming.

Third, since the power cable is accommodated inside the rail part or the wire guide part so that the power cable is not exposed to the outside, the user can not touch it by hand, thereby preventing safety accidents such as electric shock.

Claims (12)

delete A main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; And a winding unit for winding or unwinding the power cable, and a rotating unit for rotating the winding unit in a forward or reverse direction according to the movement of the door, by winding or unwinding the power cable according to the movement of the door. Winding device for adjusting the length of the refrigerator comprising a. The method of claim 2, The rotating part, A rack disposed along a direction of movement of the door; And And a pinion meshed with the rack and rotating when the door is moved. The method of claim 3, wherein The winding unit, characterized in that extending from one side of the pinion. The method according to any one of claims 2 to 4, The winding unit, a refrigerator comprising a locking hole through which the power cable passes. delete A main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A rail connecting the main body and the door and sliding the door with respect to the main body; A power cable installed to penetrate the rail and connecting the main body and the lifting device to supply electricity to the lifting device from the main body; And a winding device for adjusting the length of the power cable by winding or unwinding the power cable according to the movement of the door. A main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A rail connecting the main body and the door and sliding the door with respect to the main body; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; And a winding device installed inside the rail and adjusting the length of the power cable by winding or unwinding the power cable according to the movement of the door. A main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; Winding device for adjusting the length of the power cable by winding or unwinding the power cable according to the movement of the door; A first guide rail connected to the main body and a second guide rail connected to the door to guide the movement of the door while moving along the first guide rail, connecting the main body and the door, And a rail for sliding the door relative to the main body. A main body having a storage space therein; A door that opens and closes the main body; A basket disposed in the storage space and capable of being pulled out of the main body; An elevating device provided in the door to elevate the basket; A power cable connecting the main body and the elevating device to supply electricity to the elevating device from the main body; Winding device for adjusting the length of the power cable by winding or unwinding the power cable according to the movement of the door; And a wire guide part configured to expand and contract with the movement of the door and accommodate the power cable therein. The method of claim 10, The winding device is a refrigerator, characterized in that installed in the wire guide portion. The method of claim 10, The wire guide portion, A first wire guide connected to the main body; And And a second electric wire guide fixed to the door and sliding with respect to the first electric wire guide as the door moves.

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