KR20220035684A - Chest of drawers - Google Patents

Abstract

The drawer lock can be unlocked by entering a password on the keypad, and a drawer that stores the power used in the keypad is installed in a location that is not visible from the outside.
For this purpose, the chest of drawers according to the present invention includes a chest of drawers whose front is open so that the drawer can slide back and forth, and a keypad installed on the top of the chest of drawers and where a password for unlocking the drawer is entered by the user. and a power supply installed on the lower surface of the top plate and supplying power to the keypad, and a battery detachably mounted on the power supply, electrically connected to the power supply, and storing the power.

Description

CHEST OF DRAWERS

The present invention relates to a chest of drawers, and more specifically to a chest of drawers equipped with a locking device for locking/unlocking the drawer.

Generally, chests of drawers are used to store items at home or in the office.

The general structure of the chest of drawers consists of a chest of drawers with an open front, and a plurality of drawers installed on the chest of drawers to be able to slide back and forth. The drawer has an open upper surface to provide space for storing items.

Such a conventional chest of drawers can be placed by the user in a designated place indoors to store various items. It is generally placed at the bottom of a desk and used to store study supplies or office supplies.

Meanwhile, a locking device for locking/unlocking the drawer is installed in the drawer to ensure security of items and prevent theft.

The locking device is formed as a key box with a key groove, and the user inserts a physical key into the key groove and then rotates the rotor of the key box, thereby providing a mechanical lock that locks/unlocks the drawer. It has been used in the past.

Recently, instead of using the key box and the key, an electronic lock is used in which the user locks/unlocks the drawer by entering a password on the keypad or locks/unlocks the drawer by entering the user's fingerprint. there is.

However, since the electronic lock requires power to input the password or fingerprint, a battery storing the power must be installed. In this case, it is inconvenient to periodically replace the battery.

Republic of Korea Patent Publication No. 10-2147343 (announced on August 24, 2020) (hereinafter referred to as 'prior art') discloses a 'fingerprint recognition locking device for a drawer' that has a rechargeable battery inside which the power is stored, By replacing the battery with the rechargeable battery, the inconvenience of periodically replacing the battery could be eliminated.

However, since the rechargeable battery included in the prior art is not permanent, the rechargeable battery must be replaced at some point, but there was a problem in that it was not easy to remove the rechargeable battery from the inside of the lock, and a battery to replace the rechargeable battery was difficult to obtain. When installed on the chest of drawers, there was a problem in that it hindered the improvement of the exterior image of the chest of drawers.

Republic of Korea Patent Publication No. 10-2147343 (announced on August 24, 2020)

The problem to be solved by the present invention is to provide a drawer in which the drawer lock can be unlocked by entering a password on a keypad, and a battery storing power used in the keypad is installed in a location that is not visible from the outside.

Another problem that the present invention seeks to solve is to provide a drawer in which the battery can be easily replaced by simply inserting a hand into the interior of the drawer without visually checking the battery.

The problem of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the chest of drawers according to the present invention is composed of a chest of drawers, a keypad, a power supply, and a battery. The front of the drawer body is opened so that the drawer can slide back and forth. The keypad is installed on the top of the chest of drawers. A password for unlocking the drawer is entered by the user into the keypad. The power supply is installed on the lower surface of the top plate. The power supply supplies power to the keypad. The battery is detachably mounted on the power supply and electrically connected to the power supply. The battery stores the power.

A battery insertion groove into which the battery is inserted may be formed on the lower surface of the power supply. First hook parts may be formed on both sides of the battery insertion groove. Second hook parts may be formed on both sides of the battery. The second hook portion may be hooked to the first hook portion.

The first hook portion may be formed as a hook groove. A first hook protrusion may be formed on the inner surface of the hook groove. The second hook portion may be formed with a hook protrusion inserted into the hook groove. A second hook projection that is caught by the first hook projection may be formed on an outer surface of the hook projection.

The second hook portion may be cut from the case of the battery and have elastic force.

An insertion position alignment groove may be formed on the upper surface of the battery. An insertion position alignment protrusion that is inserted into the insertion position alignment groove may be formed on the inner surface of the battery insertion groove.

A first mounting groove may be formed on the lower surface of the upper plate. A first mounting protrusion having a shape corresponding to the first mounting groove may be formed on the upper surface of the power supply. The first mounting protrusion may be inserted into the first mounting groove.

A plurality of second mounting grooves may be formed on the lower surface of the upper plate outside the first mounting groove. A plurality of second mounting protrusions may be formed on the upper surface of the power supply at positions corresponding to the plurality of second mounting grooves. The plurality of second mounting protrusions may each be inserted into the plurality of second mounting grooves.

A wireless communication unit may be installed within the first mounting protrusion. The wireless communication unit may communicate wirelessly with the keypad.

A cutout portion and a step portion may be formed at the front end of the upper plate. The cutout is cut to be introduced backwards so that the keypad can be inserted. The step portion may extend rearward from the incision portion. The lower surface of the stepped portion may be stepped with respect to the lower surface of the upper plate. The keypad may be formed with an upper wing and a lower wing. The upper wing portion may be seated on the upper surface of the step portion. The lower wing portion may be spaced downward from the upper wing portion and may be seated on the lower surface of the step portion. A plurality of fastening grooves may be formed in the step portion. A plurality of fastening holes may be formed in the lower wing portion at positions corresponding to the plurality of fastening grooves. The plurality of fastening holes may be fastened to each of the plurality of fastening grooves through a fastening member.

The step portion may be composed of an upper wing installation portion and a lower wing installation portion. The upper wing portion may be seated on the upper surface of the upper wing installation portion. The lower wing installation part may be formed to protrude from the lower surface of the upper wing installation part. The lower wing portion may be seated on the lower surface of the lower wing installation portion. The lower wing installation portion may be partitioned left and right by an extension groove extending forward from the front end of the first mounting groove.

Specific details of other embodiments are included in the detailed description and drawings.

In the drawer according to the present invention, the drawer can be unlocked by touching the number displayed on the keypad and entering the password, and the battery that supplies power to the keypad is installed on the bottom of the top so that it is not visible from the outside. By mounting the battery detachably on the power supply, it is possible to easily replace the battery.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a chest of drawers according to an embodiment of the present invention;
Figure 2 is a view showing the drawer shown in Figure 1 in an open state;
Figure 3 is a perspective view showing the bottom of the top plate shown in Figure 1;
Figure 4 is a side cross-sectional view of Figure 3;
Figure 5 is a diagram showing the keypad shown in Figure 1, showing a state in which the user touches the touch input portion of the keypad to unlock the drawer;
Figure 6 is an exploded perspective view of the keypad shown in Figure 1 disassembled from the upper plate;
Figure 7 is a perspective view from the bottom of Figure 6;
Figure 8 is an exploded perspective view of the power supply and battery shown in Figure 3 disassembled from the top plate;
Figure 9 is a bottom perspective view of Figure 8;
Figure 10 is a perspective view of the other side of Figure 9;
FIG. 11 is a longitudinal cross-sectional view showing the top plate, power supply, and battery shown in FIG. 3.

Hereinafter, a chest of drawers according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a chest of drawers according to an embodiment of the present invention, and FIG. 2 is a view showing the drawer shown in FIG. 1 in an open state.

Referring to FIGS. 1 and 2 , the chest of drawers 1 according to an embodiment of the present invention may include a chest body 100 and a drawer 200.

The chest of drawers body 100 may be formed in a hexahedral cylindrical shape with an open front surface. That is, the internal space of the chest of drawers body 100 may extend to the open front, and the drawer 200 may be inserted into the interior of the chest of drawers 100 through the open front of the chest of drawers 100. While the drawer 200 is inserted into the chest of drawers body 100 , the drawer 200 may be pulled out from the chest of drawers body 100 .

The chest of drawers body 100 may include an upper plate 110, a lower plate 120, a left plate 130, a right plate 140, a back plate 150, and an upper front plate 160.

The upper plate 110 and the lower plate 120 may be disposed to face each other. That is, the lower surface of the upper plate 110 may be disposed to face the upper surface of the lower plate 120. The upper plate 110 and lower plate 120 may be arranged horizontally. The upper plate 110 may form the upper surface of the chest of drawers body 100, and the lower plate 120 may form the lower surface of the chest of drawers body 100.

The left plate 130 and the right plate 140 may be arranged to face each other. That is, the right side of the left plate 130 may be disposed to face the left side of the right plate 140. The left plate 130 and the right plate 140 may be arranged vertically. The left plate 130 may form the left side of the chest of drawers body 100, and the right plate 140 may form the right side of the chest of drawers body 100.

The back plate 150 may be arranged vertically. The back plate 150 may form the rear of the chest of drawers body 100.

The upper front plate 160 may be arranged vertically. The upper front plate 160 may form the front upper surface of the chest of drawers body 100.

The top of the left plate 130 may be connected to the left side of the lower surface of the upper plate 110, and the upper end of the right plate 140 may be connected to the right side of the lower surface of the upper plate 110. The left end of the lower plate 120 may be connected to the lower right side of the left plate 130, and the right end of the lower plate 120 may be connected to the lower left side of the right plate 140. The rear end of the left plate 130 may be connected to the front left side of the back plate 150, and the rear end of the right plate 140 may be connected to the front right side of the back plate 150. The upper end of the rear plate 150 may be connected to the rear lower surface of the upper plate 110, and the rear end of the lower plate 120 may be connected to the lower front of the rear plate 150. The top of the upper front plate 160 may be connected to the front portion of the lower surface of the upper front plate 110, and the left end of the upper front plate 160 may be connected to the front portion of the right side of the left plate 130. The right end may be connected to the front left side of the right plate 140, and the bottom of the upper front plate 160 may be matched with the top of the front plate of the upper drawer 210 when the upper drawer 210, which will be described later, is closed. there is. The front end of the left plate 130, the front end of the right plate 140, the front end of the lower plate 120, and the front end of the upper front plate 160 may be disposed on the same plane, and the front end of the upper plate 110 may be disposed on the same plane. The front end of the left plate 130, the front end of the right plate 140, the front end of the lower plate 120, and the front end of the upper front plate 160 may be disposed to protrude forward. The connection relationship and arrangement relationship between the upper plate 110, lower plate 120, left plate 130, right plate 140, back plate 150, and upper front plate 160 must be limited to these connection relationships and arrangement relationships. There is no, and within the range where the chest of drawers body 100 has a hexahedral cylindrical shape with the front open, the upper plate 110, the lower plate 120, the left plate 130, the right plate 140, the back plate 150 and The connection relationship and arrangement relationship of the upper front plate 160 can be changed and implemented in various ways.

A plurality of legs 170 may be installed on the lower surface of the drawer body 100. That is, a plurality of legs 170 may be installed on the lower surface of the lower plate 120. The plurality of legs 170 may space the chest of drawers body 100 upward from the floor of the place where the chest of drawers 1 is installed. Two legs 170 may be installed on the front lower surface of the lower plate 120, and two legs 170 may be installed on the rear lower surface of the lower plate 120. The number of legs 170 is not necessarily limited to four, and may be changed to various numbers.

Among the plurality of legs 170, a wheel 180 that touches the floor of the place where the drawer 1 is installed may be installed on the leg 170 disposed at the rear. In addition, a wheel locking device that locks/unlocks the rotation of the wheel 180 may be installed on the leg 170 disposed at the rear among the plurality of legs 170. When the user wants to change the installation position of the chest of drawers (1), after unlocking the wheel lock, lift the front part of the chest of drawers (100) and push or pull the chest of drawers (100) to open the wheel (180). It can be easily moved to the installation position, and then the wheel lock can be locked to prevent the installation position of the drawer (1) from changing.

The drawer 200 may be installed on the chest of drawers 100 to be able to slide back and forth. The user can open the drawer 200 by sliding it forward and close it by sliding the drawer 200 backward.

The drawer 200 may be provided with a plurality of drawers 200 arranged vertically. That is, the plurality of drawers 200 may include an upper drawer 210, a middle drawer 220, and a lower drawer 230. However, the number of drawers 200 does not need to be limited to three, and it is sufficient to have at least one drawer.

The upper drawer 210 may be placed at the top of the plurality of drawers 200. The upper drawer 210 may be placed above the middle drawer 220.

The middle drawer 220 may be placed in the middle of the plurality of drawers 200. The middle drawer 220 may be placed lower than the upper drawer 210. The middle drawer 220 may be disposed between the upper drawer 210 and the lower drawer 230.

The lower drawer 230 may be placed at the bottom of the plurality of drawers 200. The lower drawer 230 may be placed lower than the middle drawer 220.

A guide rail may be installed on each of the left and right sides of the drawer body 100 to guide the forward and backward slide movement of the drawer 200. That is, guide rails that guide the forward and backward slide movement of the drawer 200 may be installed on each of the right side of the left plate 130 and the left side of the right plate 140.

Additionally, sliders that can slide back and forth on the guide rail may be installed on both sides of the drawer 200. When the user pushes or pulls the drawer 200 back and forth, the slider slides along the guide rail, and the drawer 200 is inserted into and closed in the chest of drawers body 100 or withdrawn from the chest of drawers body 100. It can be open.

Meanwhile, a keypad 300 may be installed at the front of the top plate 110. Here, the keypad 300 may be a user input unit of a locking device that locks/unlocks the drawer.

Related components, including the keypad 300, will be described in detail below with reference to FIGS. 3 to 5.

FIG. 3 is a perspective view showing the bottom of the top plate shown in FIG. 1, FIG. 4 is a side cross-sectional view of FIG. 3, and FIG. 5 is a view showing the keypad shown in FIG. 1, where the user inputs a touch on the keypad to unlock the drawer. This is a diagram showing the state in which the unit is touched.

The keypad 300 may include a keypad body 310 and a touch input unit 320.

The keypad body 310 may be fixedly installed at the front end of the top plate 110, and the touch input unit 320 may be installed at an angle at an upper front corner of the keypad body 310. The touch input unit 320 may be disposed with its upper end inclined closer to the rear than the lower end. Because the touch input unit 320 is disposed at an angle, the user can easily touch the touch input unit 320.

When the user touches the touch input unit 320 to unlock the drawer 200, as shown in FIG. 5, numbers from 0 to 9 may be displayed on the touch input unit 320. The user can input a password to unlock the drawer 200 by touching the number displayed on the touch input unit 320.

A printed circuit board may be installed inside the touch input unit 320, and a plurality of light emitting diodes (LEDs) that light up to display the numbers may be mounted on the printed circuit board. That is, when the user touches the touch input unit 320 to unlock the drawer 200, the plurality of light emitting diodes light up and the number is displayed on the touch input unit 320. Additionally, the printed circuit board may be equipped with a wireless communication unit that communicates wirelessly with a wireless communication unit 470 (see FIG. 11) installed in the power supply 400, which will be described later. The wireless communication unit 470 may be a Near Field Communication (NFC) type communication unit.

That is, the keypad 300 can transmit a signal for the password entered into the touch input unit 320 of the keypad 300 to the power supply 400 through wireless communication with the power supply 400, and wirelessly transmit the signal to the power supply 400. The control unit provided with the communication unit 470 can unlock the drawer 200 by controlling the driving unit of the lock when a signal for the password is input. Here, the driving unit may be provided with a motor driven under the control of the control unit, and a locking protrusion that is inserted into a locking hole provided in the chest of drawers body 100 by driving the motor or comes out of the locking hole.

A power supply 400 may be installed on the lower surface of the upper plate 110. The power supply 400 may supply power to the keypad 300. The keypad 300 can be operated by the power supplied from the power supply 400.

A battery 500 is detachably mounted on the power supply 400 and can be electrically connected to the power supply 400. The power supplied by the power supply 400 to the keypad 300 may be stored in the battery 500.

The keypad 300 can be installed at the front of the top plate 110 at a location where the user can easily touch the touch input unit 320, and the power supply 400 and battery 500 are installed on the outside of the drawer (1). It may be installed on the lower surface of the upper plate 110, which is an invisible location. When the user wants to replace the battery 500, the user opens the upper drawer 210, inserts his hand into the space between the top plate 110 and the upper drawer 210, and replaces the battery 500 with just the feel of his hand. can do.

Meanwhile, an upper wing 311 and a lower wing 312 may be formed on the keypad 300. The upper wing 311 and the lower wing 312 may be formed to protrude rearward from the keypad body 310. The upper wing 311 may be formed to slightly protrude rearward from the top of the keypad main body 310, and the lower wing 312 extends rearward from the bottom of the keypad main body 310 more than the upper wing 311. It may be formed to protrude. The upper wing 311 and the lower wing 312 may be configured to install the keypad 300 on the upper plate 110.

The structure of installing the keypad 300 on the top plate 110 will be described in detail below with reference to FIGS. 4 to 7.

Figure 6 is an exploded perspective view of the keypad shown in Figure 1 disassembled from the top plate, and Figure 7 is a bottom perspective view of Figure 6.

Referring to FIGS. 4 to 7 , a cutout portion 111 and a step portion 112 may be formed at the front end of the upper plate 110.

The cutout portion 111 is cut to be introduced backwards so that the keypad 300 can be inserted. The cutout portion 111 may be formed at a middle position in the left and right directions of the front end of the upper plate 110. Accordingly, when the keypad 300 is inserted into the cutout portion 111 and installed at the front end of the upper plate 110, the keypad 300 may be placed at a middle position in the left and right directions of the front end of the upper plate 110.

The step portion 112 may extend rearward from the cut portion 111. The lower surface of the stepped portion 112 may be stepped with respect to the lower surface of the upper plate 110. That is, the top and bottom thickness of the step portion 112 may be formed to be thinner than the top and bottom thickness of the upper plate 110. In order to insert the step portion 112 between the upper wing portion 311 and the lower wing portion 312, which will be described later, the lower surface of the stepped portion 112 is formed to be stepped with respect to the lower surface of the upper plate 110.

As described above, the keypad 300 may be formed with an upper wing 311 and a lower wing 312. The upper wing 311 and the lower wing 312 are arranged to be spaced apart from each other up and down, so that when the keypad 300 is inserted into the cutout 111, the upper wing 311 and the lower wing ( A step portion 112 may be inserted between 312).

The upper wing portion 311 may be seated on the upper surface of the step portion 112. The lower wing portion 312 may be spaced downward from the upper wing portion 311 and may be seated on the lower surface of the stepped portion 112.

A plurality of fastening grooves 115 may be formed in the step portion 112 at the portion where the lower wing portion 312 is seated. In addition, a plurality of fastening holes 313 may be formed in the lower wing 312 at positions corresponding to the plurality of fastening grooves 115. In this embodiment, four fastening grooves 115 and four fastening holes 313 are formed, but the number of fastening grooves 115 and fastening holes 313 is not limited to four. , the number can be changed to at least two or more.

The plurality of fastening holes 313 may be fastened to each of the plurality of fastening grooves 115 through fastening members such as screws. Through this, the keypad 300 can be fixedly installed at the front end of the top plate 110.

The step portion 112 may include an upper wing installation portion 113 and a lower wing installation portion 114. The upper wing installation part 113 may extend downward from the upper surface of the upper plate 110, and the lower wing installation part 114 may extend downward from the lower surface of the upper wing installation part 113. The upper wing installation part 113 may be formed to have a thinner top and bottom thickness than the lower wing installation part 114, and the lower wing installation part 114 may be formed to have a thicker top and bottom thickness than the upper wing installation part 113.

The upper wing portion 311 may be seated on the upper surface of the upper wing installation portion 113. In addition, the lower wing installation part 114 may be formed to protrude from the lower surface of the upper wing installation part 113, and the lower wing part 312 may be seated on the lower surface of the lower wing installation part 114.

The lower wing installation portion 114 may be divided into left and right sides by an extension groove 116. Here, the extension groove 116 may be a groove extending forward from the front end of the first mounting groove 117 (see FIGS. 9 and 10), which will be described later.

The lower wing installation part 114 is divided to the left and right by an extension groove 116, and can be divided into a left lower wing installation part and a right lower wing installation part, and the left lower wing installation part has two fastening grooves 115. A dog may be formed, and two fastening grooves 1150 may be formed in the lower right wing installation portion.

The structures of the power supply 400 and battery 500 will be described in detail below with reference to FIGS. 8 to 11.

Figure 8 is an exploded perspective view of the power supply and battery shown in Figure 3 from the top plate, Figure 9 is a bottom perspective view of Figure 8, Figure 10 is a bottom perspective view of the other side of Figure 9, and Figure 11 is a top plate shown in Figure 3, power This is a vertical cross-sectional view showing the supply and battery.

Referring to FIGS. 8 to 11 , a battery insertion groove 410 into which the battery 500 is inserted may be formed on the lower surface of the power supply 400. The battery 500 may be formed in a rectangular hexahedron, and the battery insertion groove 410 may be formed in a shape corresponding to the shape of the battery so that the battery 500 can be inserted. When the battery 500 is inserted into the battery insertion groove 410 and mounted on the power supply 400, the upper part of the battery 500 can be inserted into the battery insertion groove 410, and the upper part of the battery 500 can be inserted into the battery insertion groove 410. The lower part may be disposed to protrude to the outside of the battery insertion groove 410.

First hook portions 420 may be formed on both sides of the battery insertion groove 410. Additionally, second hook portions 520 may be formed on both sides of the battery 500. In this embodiment, the first hook portion 420 is formed on the left and right sides of the battery insertion groove 410, respectively, and the second hook portion 520 is formed on the left and right sides of the battery 500, respectively. However, the first hook portion 420 may be formed on the front and rear surfaces of the battery insertion groove 410, respectively. In this case, the second hook portion 520 may be formed on the front and rear surfaces of the battery 500. Each can be formed.

When the battery 500 is inserted into the battery insertion groove 410, the second hook portion 520 is hooked to the first hook portion 420, so that the battery 500 can be mounted on the power supply 400. . In this way, since the battery 500 has a structure in which second hook parts 520 are formed on both sides, when the user presses the bottom of the second hook parts 520 on both sides with his or her finger to replace the battery 500, Since the palm is positioned below the battery 500, the battery 500 removed from the power supply 400 can safely fall onto the user's palm due to its own weight.

The first hook portion 420 may be formed as a hook groove. A first hook protrusion 421 may be formed on the inner surface of the hook groove. And, the second hook portion 520 may be formed as a hook protrusion inserted into the hook groove. A second hook projection 521 that is caught by the first hook projection 421 may be formed on the outer surface of the hook projection.

The first hook protrusion 421 and the second hook protrusion 521 may be formed to be long in the horizontal direction. In this embodiment, the first hook portion 420 is formed on the left and right sides of the battery insertion groove 410, respectively, and the second hook portion 520 is formed on the left and right sides of the battery 500, respectively. The first hook protrusion 421 and the second hook protrusion 521 are formed long in the front-back direction. However, in the case where the first hook portion 420 is formed on the front and rear surfaces of the battery insertion groove 410 and the second hook portion 520 is formed on the front and rear surfaces of the battery 500, respectively, , the first hook protrusion 421 and the second hook protrusion 521 may be formed long in the left and right directions.

The second hook portion 520 may be cut from the case of the battery 500 and may have elastic force. Additionally, the lower surface of the first hook protrusion 421 and the lower surface of the second hook protrusion 521 may each be formed as an inclined surface.

Therefore, when the user mounts the battery 500 on the power supply 400 and pushes the battery 500 into the battery insertion groove 410, the inclined surface of the second hook protrusion 521 is aligned with the first hook protrusion 421. ), the second hook part 520 moves slightly toward the inside of the battery, and after the slope of the second hook protrusion 521 goes over the slope of the first hook protrusion 421, the second hook portion 520 moves slightly toward the inside of the battery. As the second hook portion 520 returns to its original position toward the outside of the battery, the second hook protrusion 521 is caught by the first hook protrusion 421, so that the battery 500 can be mounted on the power supply 400. there is.

Additionally, when the user removes the battery 500 from the power supply 400 and presses the lower ends of the second hook parts 520 on both sides with his or her fingers, the second hook parts 520 press the inside of the battery 500. As the second hook protrusion 521 is released from the first hook protrusion 421 by moving slightly toward the battery 500, the battery 500 can be moved downward by its own weight and removed from the power supply 400.

Two electrode grooves 530 may be formed on the upper surface of the battery 500, and two electrode protrusions 430 that are respectively inserted into the two electrode grooves 530 may be formed on the inner surface of the battery insertion groove 410. It can be. Although only one of the two electrode protrusions 430 is visible in FIG. 10, two electrode protrusions 430 may be formed on the inner surface of the battery insertion groove 410. Among the two electrode grooves 530, one may be a positive electrode groove and the other may be a negative electrode groove. Additionally, of the two electrode protrusions 430, one may be a positive electrode protrusion and the other may be a negative electrode protrusion. When the battery 500 is inserted into the battery insertion groove 410 and the battery 500 is mounted on the power supply 400, the positive electrode protrusion is inserted into the positive electrode groove and is electrically connected, and the negative electrode protrusion is By being inserted into the negative electrode groove and electrically connected, power from the battery 500 can be supplied to the keypad 300 through the power supply 400.

Additionally, an insertion position alignment groove 540 may be formed on the upper surface of the battery 500. An insertion position alignment protrusion that is inserted into the insertion position alignment groove may be formed on the inner surface of the battery insertion groove. When the battery 500 is inserted into the battery insertion groove 410 and the battery 500 is mounted on the power supply 400, the insertion position alignment protrusion 440 can be inserted into the insertion position alignment groove 540. there is. The insertion position alignment groove 540 and the insertion position alignment protrusion 440 can allow the battery 500 to be inserted into the battery insertion groove 410 in the correct direction.

The two electrode grooves 530 may be formed on the left side of the upper surface of the battery 500, and the insertion position alignment groove 540 may be formed on the right side of the upper surface of the battery 500. Additionally, the two electrode protrusions 430 may be formed on the left side of the upper surface of the battery insertion groove 410, and the insertion position alignment protrusion 440 may be formed on the right side of the upper surface of the battery insertion groove 410. That is, the insertion position alignment groove 540 may be disposed on opposite sides of two electrode grooves 530 of the upper surface of the battery 500, and the insertion position alignment protrusion 440 may be disposed on two of the upper surfaces of the battery insertion groove 410. It may be placed on the opposite side of the electrode protrusion 430. Therefore, when inserting the battery 500 into the battery insertion groove 410, the positive electrode protrusion can be prevented from being inserted into the negative electrode groove so that it can be inserted into the positive electrode groove, and the negative electrode protrusion can be inserted into the positive electrode groove. It is possible to prevent it from being inserted into the negative electrode groove.

A first mounting groove 117 may be formed on the lower surface of the upper plate 110. In addition, a first mounting protrusion 450 having a shape corresponding to the first mounting groove 117 may be formed on the upper surface of the power supply 400. The first mounting groove 117 may be formed at a middle position in the left and right directions on the lower surface of the upper plate 110, and the first mounting protrusion 450 may be formed at a middle position in the left and right directions on the upper surface of the power supply 400. You can.

When the power supply 400 is mounted on the lower surface of the upper plate 110, the first mounting protrusion 450 may be inserted into the first mounting groove 117. In this embodiment, the first mounting protrusion 450 is illustrated as being protruding in a square shape. However, the protruding shape of the first mounting protrusion 450 is not limited to a square shape and can be formed in a polygonal shape. The first mounting protrusion 450 is formed in a polygonal shape, so that when the first mounting protrusion 450 is inserted into the first mounting groove 117, the power supply 400 is rotated with respect to the upper plate 110. can be prevented.

A plurality of second mounting grooves may be formed on the lower surface of the upper plate 110 outside the first mounting groove. A plurality of second mounting protrusions may be formed on the upper surface of the power supply at positions corresponding to the plurality of second mounting grooves. The plurality of second mounting protrusions 460 are respectively inserted into the plurality of second mounting grooves 118, so that the power supply 400 can be mounted on the upper plate 110. The plurality of second mounting protrusions 460 may be press-fitted into the plurality of second mounting grooves 118, respectively.

The first mounting groove 117 and the first mounting protrusion 450 prevent the power supply 400 from rotating with respect to the upper plate 110 when the power supply 400 is installed on the lower surface of the upper plate 110. On the other hand, the plurality of second mounting grooves 118 and the plurality of second mounting protrusions 460 serve the function of fixing and installing the power supply 400 on the lower surface of the upper plate 110. Each of the plurality of second mounting grooves 118 is formed in a size significantly smaller than that of the first mounting groove 117 and may be formed in a circular shape. Additionally, each of the plurality of second mounting protrusions 460 may be significantly smaller than the first mounting protrusion 450 and may be circular.

A wireless communication unit 470 may be installed within the first mounting protrusion. The wireless communication unit 470 can communicate wirelessly with the keypad 300. As described above, the wireless communication unit 470 may be an NFC-type communication unit. The wireless communication unit 470 may be a chipset mounted on a printed circuit board, and the control unit may be mounted on the printed circuit board on which the wireless communication unit 470 is mounted.

As described above, the drawer 1 according to an embodiment of the present invention can unlock the locking device of the drawer 200 by entering a password on the keypad 300 and stores the power used in the keypad 300. One battery 500 can be installed on the lower surface of the top plate 110 so that the battery 500 is not visible from the outside.

In addition, since both sides of the battery 500 are hooked to the power supply 400, the battery 500 can be easily replaced by simply inserting your hand into the interior of the drawer (1) without visually checking the battery 500. .

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

1: Drawer 100: Drawer body
110: top plate 111: cutout
112: step portion 113: upper wing installation portion
114: lower wing installation part 115: fastening groove
116: Extension groove 117: First mounting groove
118: second mounting groove 200: drawer
300: Keypad 311: Upper wing part
312: lower wing 313: fastening hole
400: Power supply 410: Battery insertion groove
420: First hook portion 440: Insertion position alignment protrusion
450: first mounting protrusion 460: second mounting protrusion
470: wireless communication unit 500: battery
520: second hook portion 521: second hook projection
540: Insertion position alignment groove

Claims (10)

A chest of drawers body with an open front side so that the drawers can slide back and forth;
A keypad installed on the top of the drawer body, where a password for unlocking the drawer is entered by the user;
a power supply installed on the lower surface of the top plate and supplying power to the keypad; and
A chest of drawers comprising: a battery detachably mounted on the power supply, electrically connected to the power supply, and storing the power. In claim 1,
A battery insertion groove into which the battery is inserted is formed on the lower surface of the power supply,
First hook parts are formed on both sides of the battery insertion groove,
A chest of drawers in which second hook parts are formed on both sides of the battery and are hooked to the first hook part. In claim 2,
The first hook portion is formed as a hook groove, and a first hook projection is formed on the inner surface of the hook groove,
The second hook portion is formed with a hook projection inserted into the hook groove, and a second hook projection that is caught by the first hook projection is formed on an outer surface of the hook projection. In claim 3,
The second hook portion is cut from the battery case and has elasticity. In claim 4,
An insertion position alignment groove is formed on the upper surface of the battery,
A chest of drawers in which an insertion position alignment protrusion is formed on an inner surface of the battery insertion groove to be inserted into the insertion position alignment groove. In claim 1,
A first mounting groove is formed on the lower surface of the upper plate,
A chest of drawers wherein a first mounting protrusion is formed on the upper surface of the power supply and has a shape corresponding to the first mounting groove and is inserted into the first mounting groove. In claim 6,
A plurality of second mounting grooves are formed on the lower surface of the upper plate outside the first mounting groove,
A chest of drawers wherein a plurality of second mounting protrusions are formed on the upper surface of the power supply and are respectively inserted into the plurality of second mounting grooves at positions corresponding to the plurality of second mounting grooves. In claim 7,
A chest of drawers further comprising a wireless communication unit installed within the first mounting protrusion and communicating wirelessly with the keypad. In claim 6,
At the front end of the upper plate, a cutout is formed to be introduced backwards into which the keypad is inserted, and a stepped portion extending rearward from the cutout portion and having a lower surface stepped with respect to the lower surface of the upper plate,
The keypad is formed with an upper wing portion seated on the upper surface of the step portion and a lower wing portion spaced downward from the upper wing portion and seated on the lower surface of the step portion,
A plurality of fastening grooves are formed in the step portion,
A chest of drawers in which a plurality of fastening holes are formed in the lower wing portion at positions corresponding to the plurality of fastening grooves and are fastened to each of the plurality of fastening grooves through a fastening member. In claim 9,
The step portion,
An upper wing installation portion on which the upper wing portion is seated on the upper surface,
A chest of drawers including a lower wing installation part that protrudes from the lower surface of the upper wing installation part so that the lower wing part is seated on the lower surface, and is partitioned to left and right by an extension groove extending forward from the front end of the first mounting groove.

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