Single layer winding type lifting cable reel

Abstract

The present invention discloses a single-layer winding type lift cable reel including: a main body attached to a ceiling, a wall, or a support of a predetermined shape and having a storage space therein; a drum rotatably stored inside the main body, with a power cable wound around its outer periphery and having a hollow space formed inside; a drive motor disposed within the hollow space and providing forward / reverse rotational forces to the drum; a slip ring attached to a part of the drum and receiving commercial power input in a contact manner; and a lift body suspended from the lower end of the power cable and attached so as to be able to rise and fall, wherein the power cable is wound in a single layer around the outer periphery of the drum to prevent heat generation due to eddy currents.

Description

[Technical Field]

[0001] This application claims priority based on Korean Patent Application No. 10-2021-0034316 and Korean Patent Application No. 10-2021-0034320, filed on March 16, 2021, and the entire contents disclosed in the specification and drawings of said applications are incorporated herein by reference.

[0002] The present invention relates to a single-layer winding type lifting cable reel, and more particularly to a single-layer winding type lifting cable reel that can be attached to a ceiling or wall and has a structure that allows a power cable to be reeled or wound up in a lifting manner. [Background technology]

[0003] 2. Description of the Related Art An electrical outlet is a device that supplies power by connecting to a plug connected to various home appliances or electrical devices, and is usually installed in a recessed manner in the ceiling or wall of various facilities.

[0004] In multi-use facilities such as schools, restaurants, cafes, and izakayas, electrical appliances are used in multiple locations within a limited space at the same time, so many electrical outlets are installed on the ceiling, walls, and floors of the room.When necessary, a method of connecting a multi-tap (power tap) to the outlet to branch out power cables to multiple locations is also widely used.

[0005] 2. Description of the Related Art Recently, as the use of portable electronic devices such as smartphones, laptops, touchpads, etc. has become more common, it is common to see people plugging their portable electronic devices into outlets at multi-use facilities to charge them.

[0006] However, the use of electrical outlets in such multi-use facilities not only detracts from the aesthetics of the interior due to the complicated wiring along the walls and floors of the room, but also makes it inconvenient to insert and remove plugs from electrical appliances, and increases the risk of safety accidents such as tripping over cables scattered on the floor.

[0007] As an alternative, a technique has been proposed in which a cable reel is attached to the ceiling or wall and a reel-type outlet is connected to the end of the reel. For example, Patent Document 1 below discloses a cable reel outlet lifting device that allows electric wires to be wound up in a stacked manner in the vertical direction and prevents tangling or twisting of the electric wires. The device rotates a first winding section and a second winding section through a power section (motor), and power is continuously supplied even during rotation for winding or unwinding the main power supply line and the outlet power supply line. The diameter of the first winding section is smaller than the diameter of the second winding section, and the unwinding length of the outlet power supply line is longer than the unwinding length of the main power supply line.

[0008] However, conventional cable reel outlet lifting devices have a structure in which the motor that provides the rotational force and the cable winding unit are positioned at a certain distance, which limits how compact the device can be. In addition, there is a problem that the center of gravity is offset, making it difficult to stably lift and lower the outlet. Furthermore, there is a drawback in that the structure for preventing the cable supplying the main power supply from twisting when the winding part rotates is complicated, and an alternative solution is desired. In addition, conventional cable reels have a winding structure in which the power cable is wound around the drum in multiple layers, which can induce eddy currents between adjacent cables in the upper and lower layers when power is supplied, causing heat and leading to fires.

[0009] On the other hand, when enjoying leisure activities such as company or club drinking parties, picnics, and camping, game props such as darts, betting wheels, and dice are often used. However, most of the props used in games are disposable, and game devices such as darts and betting wheels are relatively large and not portable. Even after use, they take up space and detract from the aesthetics of the facility's interior.

[0010] As an alternative, Patent Document 2 below proposes a portable roulette device with improved portability that can be rotated while inserted into various types of containers or bottles. Specifically, Patent Document 2 discloses a portable roulette device that includes a mounting section whose internal space is open upward, a display section whose lower rotation axis is detachably connected to the mounting section and whose upper part protrudes toward a predetermined position and includes an indicator chip with a built-in battery, and a light-emitting unit that emits light using the battery and is rotatably connected to the outer surface of the rotation axis between the mounting section and the display section, wherein when the mounting section, the display section, and the display section are connected together, a portion of the mounting section protrudes toward the bottom of the display section and is formed on a horizontal line different from that of the display section, and when a portion of the mounting section is inserted into the lid of a container or bottle, the side of the display section is turned in one direction, causing the display section to rotate about the rotation axis.

[0011] However, since the portable roulette device described above is for personal use, it is not suitable for installation in a multi-use facility such as a restaurant, cafe, or tavern for simultaneous shared use by many people. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Korean Patent No. 10-1530169 [Patent Document 2] Korean Patent No. 10-1921684 Summary of the Invention [Problem to be solved by the invention]

[0013] The present invention was devised in consideration of the above problems, and aims to provide a single-layer winding type lifting cable reel that can be used in a lifting mode by suspending a lifting body from the end of a power cable and has a structure that can minimize the generation of eddy currents between the power cable.

[0014] Another object of the present invention is to provide a single-layer winding type lifting cable reel that can be made smaller by improving the connection between the drum housed inside the main body and the drive motor.

[0015] Another object of the present invention is to provide a single-layer winding type lifting cable reel that can accurately detect the amount of rotation of the drum and the length of the power cable that is unwound by winding the power cable around the outer peripheral surface of the drum at a constant pitch.

[0016] It is yet another object of the present invention to provide a single-layer winding type lifting cable reel having a structure in which an electric outlet and a rotating game device are combined with a lifting body. [Means for solving the problem]

[0017] To achieve the above object, one aspect of the present invention provides a single-layer winding type lifting cable reel including: a main body attached to a ceiling, a wall, or a support of a predetermined shape and having an internal storage space; a drum rotatably stored within the main body, with a power cable wound around its outer periphery and having a hollow interior; a drive motor disposed within the hollow and providing forward and reverse rotational force to the drum; a slip ring attached to a portion of the drum and receiving commercial power input in a contact manner; and a lifting body suspended from the lower end of the power cable and attached so as to be able to rise and fall, wherein the power cable is wound in a single layer around the outer periphery of the drum to prevent heat generation due to eddy currents.

[0018] It is desirable that when the winding of the power cable onto the drum is completed, the final turn of the power cable is aligned with the center of the main body, and when the winding of the power cable is completed, the lifting of the lifting body is completed, and when the lifting body is connected to the lower part of the main body, the center of the lifting body coincides with the center of the main body.

[0019] A guide groove may be provided on the outer peripheral surface of the drum in a spiral shape along the longitudinal direction of the drum, for accommodating a portion of the outer peripheral surface of the power cable so that the power cable is wound at a constant pitch.

[0020] At least one portion of the guide groove may be formed with a position adjustment hole that communicates with the hollow of the drum and serves as a starting point for winding the power cable onto the outer peripheral surface of the drum.

[0021] The position adjustment holes may be formed in multiple alternating fashion with the guide grooves that are repeated along the longitudinal direction of the drum so that the starting point of winding the power cable onto the outer peripheral surface of the drum can be selected depending on the overall length of the power cable.

[0022] In order to ensure the rigidity of the drum, the position adjustment holes may be formed offset from each other in multiple directions based on the central axis of rotation of the drum.

[0023] The power supply device may further include at least one guide roll fixed to an inner bottom surface of the main body and disposed below the drum to guide the power cable unwound from the drum to the bottom of the main body.

[0024] The power supply may further include a microcomputer that detects a no-load state or an overload state by sensing tension applied to the power cable and controls to automatically stop the operation of the driving motor.

[0025] The microcomputer may further perform a slow section control to prevent impact between the main body and the drum by slowing down the rotation speed of the drum before the lifting body ascends and couples with the main body.

[0026] The microcomputer may further perform automatic stop control to detect when the lifting body reaches a preset height and stop the operation of the drive motor.

[0027] The lifting body may comprise a power outlet provided with at least one plug socket.

[0028] The elevator may further include a storage unit provided on at least one side thereof to selectively open an internal storage space.

[0029] The storage unit may further include a multipurpose shelf that is pivotally connected to both sides of the lifting body, is disposed below the lifting body, and has an upper surface provided with a storage surface on which objects can be placed.

[0030] A cable hole is provided in the center of the lifting body through which the power cable is pulled in, and a plurality of crimping blocks are arranged around the cable hole to surround the power cable on all sides.The power cable can be fixed to the lifting body by pressing the plurality of crimping blocks toward the power cable while compressing the power cable using bolts that are selectively tightened so as to come into contact with the outer surfaces of the crimping blocks.

[0031] Alternatively, the lifting body may be composed of a rotary game device having a lifting body suspended from the lower end of the power cable, and a rotating plate rotatably attached to one surface of the lifting body, and having a betting area sectioned in the circumferential direction and divided by at least one selected from words, numbers, images, and colors. [Effects of the Invention]

[0032] The single-layer winding type lifting cable reel according to the present invention has the following advantages. (1) Since the power cable is wound on the drum in a single layer, it is possible to prevent eddy currents from being induced between adjacent cables. Therefore, even if electricity is used with all or part of the power cable wound on the drum, it is possible to achieve electrical safety effects that are essentially the same as when the power cable is used completely unwound from the drum. (2) When the power cable is completely wound onto the drum, the final turn of the power cable is positioned on the same vertical line as the center of the main body. This means that when the lifting body is fully raised, the center of the lifting body and the center of the main body are precisely aligned, allowing the device to be compact overall and maximizing the aesthetic appeal of the interior. (3) Since the drive motor and gear unit are arranged inside the hollow of the cable reel to rotate the cable reel, the device can be made smaller than conventional technology in which the drive motor and gear unit are arranged outside the cable reel. (4) The slip ring transmits commercial power to the power cable using a contact method, which prevents twisting of the power cable when the drum rotates and simplifies the power transmission structure. (5) The power cable can be wound around the outer surface of the drum at a constant pitch, and by selecting the starting point of winding, it is possible to set the power cable to end winding in the center of the drum when the lifting body finishes rising, preventing uneven load distribution on the drum. (6) The plurality of position adjustment holes are formed offset from each other on both sides of the central axis of rotation of the drum, thereby preventing a decrease in the rigidity of the drum. (7) When no load or overload is detected from the drive motor, the drive motor operation is automatically stopped, thereby preventing safety accidents. (8) By attaching the rotating game device to the ceiling of a multi-use facility, it is possible to enjoy the game independently at each table, and by raising the lifting body of the game equipment to the ceiling after the game is over, not only can the efficiency of space utilization be improved, but also the aesthetics of the interior can be improved. (9) By detecting the rotation speed of the rotating plate and controlling the deceleration pattern, it is possible to provide a wider variety of game or event services. [Brief explanation of the drawings]

[0033] [Figure 1] 1 is a perspective view of a single-layer winding type lifting cable reel according to a preferred embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view of FIG. 1. [Figure 3] 2 is a perspective view showing a state in which the lifting body of FIG. 1 is lowered. FIG. [Figure 4] FIG. 4 is a cross-sectional view of FIG. [Figure 5] FIG. 5 is a side view showing a modified example of FIG. 4. [Figure 6] FIG. 6 is a perspective view of FIG. 5. [Figure 7] FIG. 7 is a perspective view showing a modification of FIG. 6. [Figure 8] 8 is a bottom view showing the lower structure of the lifting body of FIG. 7. FIG. [Figure 9] FIG. 10 is a transparent perspective view of a single-layer take-up lifting cable reel according to another embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view showing in detail the configuration of the lifting body of FIG. 9. [Figure 11] FIG. 10 is a cross-sectional view of FIG. [Figure 12] 10 is a perspective view showing a state in which the lifting body of FIG. 9 has been lowered. FIG. [Figure 13] FIG. 13 is a cross-sectional view of FIG. 12. [Figure 14] FIG. 14 is an enlarged view of part B in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0034] FIG. 1 is a perspective view of a single-layer winding type lifting cable reel according to a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is a perspective view showing the lifting body of FIG. 1 in a lowered state, and FIG. 4 is a cross-sectional view of FIG. 3.

[0035] 1 to 4, a single-layer winding type lifting cable reel according to a preferred embodiment of the present invention includes a main body 100 that is attached to a high location such as a ceiling, a drum 101 that is rotatably housed inside the main body 100, a drive motor 104 that is fixed to the main body 100 and provides a rotational force to the drum 101, a gear unit 105 that reduces the rotational force of the drive motor 104 and transmits it to the drum 101, and a lifting body 120 that is suspended from a power cable 102 and can be raised and lowered.

[0036] The main body 100 is attached to a support of a predetermined shape, such as a ceiling, wall, pole, or pillar inside a building. The shape of the main body 100 is not limited to the example shown in the drawings and can be modified in various ways. A storage space capable of storing the drum 101 is provided inside the main body 100.

[0037] The drum 101 is rotatably housed inside the main body 100, and a power cable 102 is wound around the outer periphery. The total length of the power cable 102 wound around the drum 101 can be selected in various ways depending on the installation environment. From the viewpoint of electrical safety, it is desirable that the power cable 102 be completely unwound from the drum 101 when the lifting body 120 has completed its descent to the required position.

[0038] A hollow space and a partition wall 103 that partitions the hollow space are formed inside the drum 101. That is, the drum 101 has a structure in which hollow spaces are formed on both sides of the partition wall 103.

[0039] As shown in FIG. 1, when the winding of the power cable 102 onto the drum is completed, the final turn T L are aligned on the same vertical line A as the center of the main body 100. The position of the drum 101 relative to the main body 100 or the position of the winding start point of the power cable 102 is determined at a point that satisfies this alignment condition. With this configuration, when the lifting body 120 finishes rising upon completion of winding of the power cable 102 and is connected to the bottom of the main body 100, the center of the lifting body 120 and the center of the main body 100 are precisely aligned, thereby maximizing the aesthetic appearance of the interior.

[0040] The slip ring 106 is disposed on the other side of the bulkhead 103, i.e., on the right side of the bulkhead 103, and is a component that receives input of commercial power by contact. The slip ring 106 is configured so that when the drum 101 rotates, a pair of contacts continuously maintain contact with each other and slip and rotate to receive input of commercial power. One side of the slip ring 106 is fixed to the other vertical plate 108b of the bracket 108, which will be described later.

[0041] At least one wire through-hole 103a is formed in the thickness direction of the partition wall 103. Therefore, the core wire of the power cable 102, whose coating has been stripped at the end thereof, can be drawn into the hollow of the drum 101 through the position adjustment hole 101a formed in the drum 101, and then connected to the slip ring 106 through the wire through-hole 103a. Alternatively, a separate connecting wire can be added between the input end of the power cable 102 and the slip ring 106.

[0042] An optical sensor 107 is disposed on one side of the periphery of the slip ring 106 to detect the amount of rotation of the drum 101. The light emitting element and the light receiving element of the optical sensor 107 are disposed opposite each other with the peripheral edge of the slip ring 106 in between.

[0043] A guide groove 101b is provided on the outer peripheral surface of the drum 101 in a spiral shape along the longitudinal direction of the drum 101 to accommodate a portion of the outer peripheral surface of the power cable 102 so that the power cable 102 is wound at a constant pitch.

[0044] At least one position of the guide groove 101b is formed with a position adjustment hole 101a that communicates with the hollow of the drum 101 and serves as a starting point for winding the power cable 102 onto the outer circumferential surface of the drum 101. A plurality of the position adjustment holes 101a are formed alternately in the pattern of the guide grooves 101b that are repeated along the longitudinal direction of the drum 101.

[0045] The power cable 102 is wound in a single layer around the outer circumferential surface of the drum 101, and the starting point of winding the power cable 102 around the outer circumferential surface of the drum 101 can be selected taking into account the overall length of the power cable 102.

[0046] The position adjustment holes 101a are formed offset from one another in multiple directions based on the central axis of rotation of the drum 101. With this configuration, the position adjustment holes 101a are formed in different longitudinal sections of the drum 101, thereby ensuring the rigidity of the drum 101. In this regard, Figures 2 and 4 show an example in which the position adjustment holes 101a are formed in the first, third, and fifth grooves on the upper part, and the position adjustment holes 101a are formed in the second, fourth, and sixth grooves on the lower part.

[0047] The lift stop limit switch 109 is fixed to the inner bottom surface of the main body 100, and a portion thereof penetrates the bottom surface of the main body 100 to be exposed to the outside, and is activated by contacting the upper surface of the lift body 120 when the lift body 120 has completed its ascent. When the lift stop limit switch 109 is activated, a predetermined microcomputer (not shown) stops the drive motor 104 to suspend winding.

[0048] The guide roll 110 is fixed to the inner bottom surface of the main body 100 , and at least one guide roll is disposed below the drum 101 to guide the power cable 102 that is unwound from the drum 101 to the bottom of the main body 100 .

[0049] Furthermore, a no-load limit switch 112 may be connected to the rotation shaft of the guide roll 110. The no-load limit switch 112 can detect the landing state of the lifting body 120 by sensing the tension on the power cable 102 that is unwound from the drum 101. For example, when power is supplied to the drive motor 104 to lower the lifting body 120, when the lifting body 120 reaches the ground and the tension decreases, the tensile force on the guide roll 110 changes, causing the no-load limit switch 112 to operate.

[0050] A roughly U-shaped bracket 108 is fixed inside the main body 100 so as to surround the drum 101 and support the drum 101 and the assembly of the drive motor 104 and gear unit 105. The bracket 108 is composed of a pair of vertical plates 108a, 108b and a horizontal plate 108c that connects the upper ends of the pair of vertical plates 108a, 108b. The pair of vertical plates 108a, 108b are arranged to correspond to both ends of the drum 101. The rear of the drive motor 104 is fixed to one of the pair of vertical plates 108a, 108b with bolts, and one side of a slip ring 106 and an optical sensor 107 are fixed to the other vertical plate 108b.

[0051] The mounting piece 111 is a fastening member for attaching the main body 100 to a ceiling, a wall, or a support of a predetermined shape. The mounting piece 111 is formed by cutting and bending a portion of the horizontal plate 108c at the midpoint thereof, and protruding outward from the top surface of the main body 100. The mounting piece 111 is formed with a fastening hole 111a for passing a fastening element such as a bolt or piece therethrough.

[0052] The driving motor 104 is fixed directly or indirectly to the main body 100 and disposed in the hollow space on one side of the drum 101. A gear unit 105 consisting of a reduction gear assembly that reduces the rotational force of the driving motor 104 and transmits it to the drum 101 is connected to the rotation shaft of the driving motor 104. The output end of the gear unit 105 is fitted and fixed in the center of one surface of the partition wall 103, and transmits the rotational force to the drum 101.

[0053] The driving motor 104 is a direct current (DC) motor, and when the lifting body 120 is stopped and the lifting body 120 does not reach its own load or a predetermined tensile force, both ends of the power input terminal of the driving motor 104 are short-circuited or a braking resistor having a predetermined resistance value is connected between the both ends so that the drum 101 does not rotate.

[0054] Alternatively, the reduction gear ratio of the gear unit 105 may be set large enough so that the drum 101 does not rotate when the lifting body 120 is stopped and the lifting body 120 does not reach its own load or a predetermined tensile force.

[0055] The drive motor 104 may be configured to be actively rotated by a power source to lower the lifting body 120 when a predetermined high load or a large force equal to or greater than a tensile force is applied to the lifting body 120. Preferably, a DC motor can be used as the drive motor 104.

[0056] A microcomputer (not shown) that controls the drive motor 104 detects an unloaded or overloaded state of the drive motor 104 and controls the drive motor 104 to automatically stop operation. To this end, an encoder (not shown) for detecting the rotation amount of the drive motor 104 may be attached to one side of the drive motor 104. The microcomputer can detect the rotation speed of the drive motor 104 from the count value of the encoder and determine whether the drive motor 104 is in an unloaded or overloaded state.

[0057] The microcomputer may further perform slow section control to prevent impact between the main body 100 and the drum 101 by reducing the rotation speed of the drum 101 before the lifting body 120 ascends and couples with the main body 100. In this case, the microcomputer outputs a pulse signal to the driving motor 104 to repeatedly turn it on and off, thereby controlling the drum 101 to couple slowly with the bottom of the main body 100.

[0058] In addition, the microcomputer may further perform automatic stop control by detecting when the lifting body 120 reaches a height preset by a user and stopping the operation of the drive motor 104. In this case, the microcomputer recognizes the position of the lifting body 120 from the amount of rotation detected by the encoder, and outputs a control signal to stop the operation of the drive motor 104 when the lifting body 120 reaches a preset position. For example, in the case of a restaurant kitchen, where the floor is often wet, the lifting body 120 may be set to automatically stop several tens of centimeters (cm) from the floor while descending.

[0059] The lifting body 120 is suspended from the power cable 102 and may be configured as an electrical outlet with at least one plug socket 121 on one side. Preferably, the lifting body 120 is made of a disk-shaped plastic injection molding. By configuring it in this way, the lifting body 120 is tightly attached to the center of the lower surface of the main body 100 when it is fully raised, allowing the device to be configured compactly overall.

[0060] The lifting body 120 has a configuration in which the power cable 102 is introduced into the center of the top surface, and a plurality of plug sockets 121 are arranged symmetrically on both sides of the center. That is, the lifting body 120 is configured so that the plug socket 121 of the electrical outlet is exposed on the top surface of the disc structure. With this configuration, when the lifting body 120 has completed its ascent and the top surface of the lifting body 120 is coupled with the bottom of the main body 100, the plug socket 121 is not exposed to the outside, which is advantageous in terms of electrical safety and interior aesthetics.

[0061] The wireless charging unit (not shown) is built into the lifting body 120 and supplies wireless power to one side (preferably the top side) of the lifting body 120 using electromagnetic induction or resonant induction, thereby providing wireless charging functionality to a specific portable electronic device such as a smartphone placed on the lifting body 120.

[0062] The single-layer winding type lifting cable reel having the above-mentioned configuration is applicable to multi-use facilities such as schools, restaurants, cafes, izakayas, etc. The single-layer winding type lifting cable reel is installed corresponding to each table, preferably on the ceiling, and provides an electrical outlet for charging portable electronic devices such as smartphones, laptops, touchpads, etc., or for connecting to plugs of devices such as various laboratory equipment, electric heating appliances, video conferencing equipment, etc.

[0063] A user can operate the single-layer winding lifting cable reel with a wired or wireless remote control to lower the lifting body 120 as shown in Figures 2 and 4. The lifting body 120 can be positioned in the air above a table or placed on the table top, and then a powered device can be plugged into the plug socket 121 to use it. Alternatively, the user can manually pull the lifting body 120 downward to lower it. In this case, the single-layer winding lifting cable reel will not lower if the load or pulling force does not reach a predetermined value determined by the braking resistance or gear reduction ratio, thereby preventing safety accidents.

[0064] When the user has finished using the power supply, the user can operate the wired or wireless remote control to raise the lifting body 120 and return it to the ceiling as shown in FIGS. 1 and 3. The lifting body 120 rises due to the winding action of the drive motor 104, and when it reaches the bottom of the main body 100, its upper surface comes into contact with the lift stop limit switch 109, stopping the lift. The power cable 102 can be precisely set so that it is wound in a single layer around the outer periphery of the drum 101 and finishes winding at the center of the drum 101 when the lifting body 120 has finished rising, by selecting the position adjustment hole 101a according to the length of the cable during the setup process before use. This also prevents the load on the lifting body 120 from being biased to one side.

[0065] When the lifting body 120 is lifted, it is brought into close contact with the center of the lower surface of the main body 100. The lower surface of the lifting body 120 may be embedded parallel to the ceiling surface, or alternatively, it may be provided externally so as to protrude.

[0066] As shown in FIGS. 5 and 6, an eyebolt 150 is fastened to the center of the lifting body 120, and a cable connector 151 is fastened to the periphery thereof, so that electrical equipment such as a light 160 can be conveniently attached to the bottom of the lifting body 120 for use.

[0067] As shown in Fig. 7, the storage unit 161 is provided on at least one side of the lift-up body 120 so as to selectively open the internal storage space 162. As shown in the figure, the storage unit 161 may be configured as a drawer. Alternatively, it may be configured as a pop-up type that selectively rotates and protrudes. A predetermined spring (not shown) that applies elastic force in a direction that draws the storage unit 161 into the inside of the lift-up body 120 may be connected to the storage unit 161. The internal storage space 162 of the storage unit 161 may store small household items and miscellaneous goods such as toothpicks, bottle openers, air fresheners, candy, etc.

[0068] Multipurpose shelf 163 is disposed below lift-up body 120 and includes storage surface 163a on which items can be placed, and a pair of support plates 163b extending upward from storage surface 163a. ​​Ends of the pair of support plates 163b are fixed to both sides of lift-up body 120 by pivots 164 and are attached so as to be able to swing freely. Items such as credit card machines, car charging cords, speakers, cameras, etc. are placed on storage surface 163a. ​​Even if the center of gravity of such items shifts to one side on storage surface 163a, multipurpose shelf 163 remains suspended from lift-up body 120 by pivots 164 so as to always face the direction of gravity, allowing for stable storage.

[0069] FIG. 8 shows the configuration of the bottom of the lifting body 120. As shown in the figure, when the power cable 102 is pulled into the cable hole 166 at the center of the lifting body 120, the crimping blocks 164, which are arranged to surround the power cable 102 on all sides, move toward the power cable 102, thereby firmly fixing the power cable 102 to the lifting body 120. To this end, semicircular bolt holes 165 corresponding to each other are formed on the outer surface of each crimping block 164 and on the inner surface of the corresponding circular rib of the lifting body 120. Therefore, when a predetermined bolt is selectively inserted into the bolt hole 165 and tightened, the tip of the bolt comes into contact with the crimping block 164, which presses inward and compresses the power cable 102, thereby firmly fixing the power cable 102 to the lifting body 120.

[0070] 9 to 14 show a single-layer winding type lifting cable reel according to another embodiment of the present invention. In the drawings, the same reference numerals as those in the above-described embodiment correspond to the same components, and therefore detailed description thereof will be omitted.

[0071] As shown by reference symbol B in Figures 13 and 14, the lifting body 120' is composed of a rotating game device having a lifting body 122 suspended from a power cable 102 and a rotating plate 123 rotatably mounted on one surface (preferably the lower surface) of the lifting body 122.

[0072] The lifting body 122 is made of a disk-shaped plastic injection molding or lightweight aluminum material, etc. By configuring it in this way, it fits tightly to the center of the underside of the body 100 when it is fully raised, and can be easily embedded in or fitted tightly to the ceiling, allowing the device to be configured compactly overall.

[0073] The rotating plate 123 is rotatably attached to the underside of the lifting body 122. To ensure smooth rotation of the rotating plate 123, a ball bearing 130 is interposed between the rotating plate 123 and the lifting body 122, and a fixing bolt 131 is fastened to the center of the rotating plate 123, which is fitted into the inner ring of the ball bearing 130. A betting area 124, which is distinguished by at least one selected from words, numbers, images, and colors, is formed and partitioned in the circumferential direction on the flat surface of the rotating plate 123. Various content may be printed on the betting area 124 depending on the type of game. For example, phrases such as "Drink!", "Sing!", "Choose!", "Pay!", and "Win!" may be printed on the betting area 124.

[0074] As shown in FIG. 10 , a rotary member 128 is fixed to the upper surface of the rotating plate 123, which is not exposed to the outside. Correspondingly, a sensing member 129 is fixed to the lifting body 122, which contacts the rotary member 128 to detect the amount of rotation, such as the rotation speed, of the rotating plate 123. The rotary member 128 has a rotation center that coincides with the center of the rotating plate 123 and has a structure in which valleys and peaks are formed repeatedly at a predetermined pitch along its substantially circular periphery. The sensing member 129 is made up of a limit switch, and its roller portion maintains contact with the valley and peak structure of the rotary member 128 when the rotating plate 123 rotates. Alternatively, the rotary member 128 may have through-holes formed repeatedly at regular intervals along its periphery, and the sensing member 129 may be made up of an optical sensor facing the through-holes.

[0075] To control the deceleration of the rotating plate 123, an electromagnet 127 is fixed to one side of the lower edge of the lifting body 122, and a magnetic member 126 is attached to the upper surface of the rotating plate 123 so as to face the electromagnet 127 during rotation. The magnetic member 126 is made of a ferromagnetic material such as an iron plate or a permanent magnet, and magnetically interacts with the electromagnet 127. When power is supplied to the electromagnet 127 while the rotating plate 123 is rotating and the electromagnet 127 becomes magnetically strong, the attractive force acting between the electromagnet 127 and the magnetic member 126 interferes with the rotation of the rotating plate 123, thereby accelerating deceleration.

[0076] The spinning game AI microcomputer (not shown) is built into the lifting body 122 and, when a user spins the rotating plate 123, calculates the rotation period and speed based on a predetermined identification protrusion (or identification groove) provided at one point on the rotary member 128, predicts the results based on empirical data on the stop position for each rotation speed, controls the electromagnet 127, and performs deceleration control using a machine learning algorithm that adjusts the stop position using the magnetic force acting between the electromagnet 127 and the magnetic member 126. In other words, if the rotating plate 123 is rotated with a force F1 without deceleration control and stops after, for example, 10 rotations, when the AI ​​microcomputer controls the electromagnet 127, it can rotate the rotating plate 123 with the same force F1 and stop it at a position after, for example, 7.5 rotations. The AI ​​microcomputer calculates the rotation period and rotation speed (V1, V2, V3, ...V) of the rotating plate 123. n ) corresponding to each stop position (P1, P2, P3, ... P n ) and learns based on empirical data about the rotation speed of the rotating plate 123, for example, when the rotation speed of the rotating plate 123 is V7, the value P7 is predicted as the stopping position. At this time, if it is desired to avoid the betting area 124 corresponding to P7 or to make another specific betting area 124 correspond to P7, the artificial intelligence microcomputer controls the rotating plate 123 to decelerate using the electromagnet 127, so that the desired betting area 124 can be stopped at the position where the fixed mark 125 is located. The artificial intelligence microcomputer learns by accumulating control or empirical data for the electromagnet 127.

[0077] The single-layer winding type lifting cable reel having the above-mentioned configuration is applicable to multi-use facilities such as restaurants, cafes, izakayas, picnic spots, pensions, etc. The single-layer winding type lifting cable reel corresponds to each table, is preferably attached to the ceiling, and can be lowered when needed to provide games or events.

[0078] A user can operate the single-winding lifting cable reel with a wired or wireless remote control to lower the lifting body 120' as shown in Figures 12 and 13. The lifting body 120' can be positioned in the air above the table or can be landed on the table top. Alternatively, the user can manually pull the lifting body 120' downward to lower it. In this case, the single-winding lifting cable reel detects the rotation amount of the drive motor 104 and automatically stops the drive motor 104 when necessary, such as when it is under load, overloaded, or has reached a set position, thereby preventing safety accidents.

[0079] After lowering the lifting body 120', the user simply grasps the lifting body 122 or the power cable 102 and turns it over so that the rotating plate 123 on the underside of the lifting body 120' faces upward, and rotates it by flicking the flat part of the rotating plate 123 with their fingertips.

[0080] The betting area 124 of the rotating plate 123 is pre-printed or engraved with various game or event phrases. For example, if the betting area 124 has event phrases such as "Drink!" or "Kiss!", it can liven up the atmosphere and add fun to a gathering of friends or a wedding reception. In this case, the administrator of the single-layer winding lifting cable reel can secretly activate the deceleration control function of the artificial intelligence microcomputer to actively control the deceleration of the rotating plate 123 so that a specific betting area 124, for example, "Kiss!", will stop at the fixed mark 125 no matter how the host of the gathering turns the rotating plate 123, thereby providing even more fun to the participants of the gathering.

[0081] In addition, when charging a portable device such as a smartphone, the plug socket exposed on the top surface of the lifting body 122 can be used, or the portable device can be placed on one side of the top surface of the lifting body 122 and the wireless charging function can be used.

[0082] After finishing the game, the user can operate the wired or wireless remote control to raise the lifting body 120' and return it to the ceiling as shown in Figures 9 to 11. The lifting body 120' rises due to the winding action of the drive motor 104, and when it reaches the bottom of the main body 100, its upper surface comes into contact with the lift stop limit switch 109 and the lifting stops. By selecting the position adjustment hole 101a during the setup process before use, the power cable 102 can be precisely set so that the winding of the power cable 102 ends in the center of the drum 101 when the lifting of the lifting body 120' has finished, thereby preventing the load on the lifting body 120' from being biased to one side.

[0083] After the game is over, the lift 120' can be raised to the ceiling, thereby increasing the efficiency of space utilization and improving the aesthetics of the interior.

[0084] As described above, the present invention has been described using limited embodiments and drawings, but the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by a person having ordinary knowledge in the technical field to which the present invention pertains within the technical spirit of the present invention and the equivalent scope of the claims. [Industrial Applicability]

[0085] When applied to various multi-use facilities, a lift-type power supply unit can be provided that can be attached to the ceiling of various multi-use facilities to charge portable electronic devices such as smartphones, laptops, and touchpads, or to conveniently and easily connect devices such as laboratory equipment, electric heating appliances, and video conferencing equipment. Furthermore, by attaching a multi-purpose shelf to the lift-type power supply unit, electrical outlets, lighting, credit card machines, car charging cords, speakers, and cameras can be easily and conveniently used in a lift-type power supply unit. By providing a storage compartment in the lift-type power supply unit, household items such as toothpicks, bottle openers, air fresheners, and candy can be neatly stored. When applied to entertainment facilities, a rotating game machine can be attached to the ceiling of the multi-use facility to allow players to enjoy games at each table, and the rotating game machine can be raised to the ceiling after the game is over, thereby improving space utilization efficiency.

Claims

1. a main body attached to a ceiling, a wall, or a support of a predetermined shape and having a storage space provided therein; a drum rotatably housed inside the main body, with a power cable wound around its outer periphery and a hollow interior; a drive motor disposed within the hollow to provide forward and reverse rotational force to the drum; a slip ring mounted inside the hollow of the drum, connected to the power cable, receiving commercial power through a contact, and rotating while continuously maintaining contact with the commercial power contact when the drum rotates, thereby preventing twisting of the power cable; a lifting body suspended from the lower end of the power cable so as to be capable of rising and falling, the power cable is wound in a single layer around the outer circumferential surface of the drum to prevent heat generation due to eddy currents; a guide groove extending in a spiral shape along the longitudinal direction of the drum on the outer peripheral surface of the drum, the guide groove accommodating a portion of the outer peripheral surface of the power cable so that the power cable is wound at a constant pitch; a position adjustment hole is formed in the guide groove, the position adjustment hole being connected to the hollow of the drum and serving as a starting point for winding the power cable onto the outer peripheral surface of the drum; The core wire of the input end of the power cable passes through the position adjustment hole and enters the hollow of the drum, and is electrically connected to the slip ring; A single-layer winding type lifting cable reel in which the position adjustment holes are formed alternately in a pattern of the guide grooves that is repeated along the longitudinal direction of the drum so that the starting point of winding onto the outer peripheral surface of the drum can be selected depending on the overall length of the power cable.

2. 2. The single-layer winding type lifting cable reel of claim 1, wherein when the winding of the power cable onto the drum is completed, the final turn of the power cable is aligned with the center of the main body, and when the winding of the power cable is completed, the lifting body is completed, and when the lifting body is connected to the lower part of the main body, the center of the lifting body coincides with the center of the main body.

3. 2. The single-layer winding type lifting cable reel according to claim 1, wherein the position adjustment holes are formed offset from one another in multiple directions with respect to the rotation center axis of the drum in order to ensure the rigidity of the drum.

4. 2. The single-layer winding type lifting cable reel according to claim 1, further comprising at least one guide roll fixed to the inner bottom surface of the main body and disposed below the drum, for guiding the power cable being unwound from the drum downward of the main body.

5. 2. The single-layer winding type lifting cable reel according to claim 1, further comprising a microcomputer that detects a no-load state or an overload state by sensing tension applied to the power cable and controls the drive motor to automatically stop operation.

6. 6. The single-layer winding type lifting cable reel according to claim 5, wherein the microcomputer further performs slow section control to prevent impact between the main body and the drum by slowing down the rotation speed of the drum before the lifting body rises and connects with the main body.

7. 6. The single-layer winding type lifting cable reel according to claim 5, wherein the microcomputer further performs automatic stop control to detect when the lifting body reaches a preset height and stop the operation of the drive motor.

8. 2. The single-layer winding type lifting cable reel according to claim 1, wherein the lifting body is a power outlet provided with at least one plug socket.

9. 9. The single-layer winding type lifting cable reel according to claim 8, further comprising a storage section provided on at least one side of the lifting body so as to selectively open an internal storage space.

10. 9. The single-layer winding type lifting cable reel according to claim 8, further comprising a multipurpose shelf that is pivotally connected to both sides of the lifting body, is disposed below the lifting body, and has an upper surface provided with a storage surface on which objects can be placed.

11. a cable hole through which the power cable is pulled in is provided at the center of the lifting body; a plurality of crimping blocks are arranged around the cable hole to surround the power cable from all sides; 2. The single-layer winding type lifting cable reel according to claim 1, wherein the power cable is fixed to the lifting body by the plurality of crimping blocks being pressed toward the power cable while compressing the power cable by means of bolts selectively tightened so as to come into contact with the outer surfaces of the crimping blocks.

12. 2. The single-layer winding type lifting cable reel according to claim 1, wherein the lifting body is a rotary game device having: a lifting body suspended from a lower end of the power cable; and a rotating plate rotatably provided on one surface of the lifting body, the rotating plate having betting areas circumferentially partitioned and defined by at least one selected from the group consisting of words, numbers, images, and colors.

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