KR20240026077A - Height adjusting device and home appliance with the same - Google Patents

Abstract

The home appliance includes a main body and a height adjustment device that adjusts the height of the main body from the ground. The height adjustment device includes a housing that can be coupled to the lower part of the main body, a leg disposed to penetrate the housing and having a male thread portion formed on an outer peripheral surface, and a leg disposed inside the housing and corresponding to the male thread portion of the leg on the inner peripheral surface. It includes a worm wheel formed with a female thread and screwed to the leg so that it can be lifted up and down, a worm engaged with the worm wheel to rotate the worm wheel, and a worm shaft provided to rotate the worm and separable from the worm. The housing includes a locking portion provided to prevent the worm shaft coupled to the worm from being separated from the housing.

Description

Height adjustment device and home appliance equipped with the same {HEIGHT ADJUSTING DEVICE AND HOME APPLIANCE WITH THE SAME}

The present disclosure relates to a height adjustment device and a home appliance equipped with the same.

Home appliances can be installed in indoor spaces, and recently, built-in home appliances have been widely used to increase space utilization.

The home appliance may include a height adjustment device that adjusts the height of the home appliance from the ground and adjusts the level of the home appliance. The height adjustment device may be installed at the bottom of the home appliance. Meanwhile, if the height adjustment device is installed at the rear of the home appliance, user accessibility may be reduced.

One aspect of the present disclosure provides a height adjustment device with improved accessibility and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device that can be easily coupled to a home appliance and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device with a detachable worm shaft and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device capable of attaching and detaching a worm shaft in various directions and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device that prevents the worm shaft from being easily separated from the worm and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device whose legs can be easily coupled to a worm wheel and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device capable of preventing breakage and a home appliance equipped with the same.

One aspect of the present disclosure provides a height adjustment device with high installation utility and a home appliance equipped with the same.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

A home appliance according to the spirit of the present disclosure includes a main body and a height adjustment device that adjusts the height of the main body from the ground. The height adjustment device includes a housing that can be coupled to the lower part of the main body, a leg disposed to penetrate the housing and having a male thread portion formed on an outer peripheral surface, and a leg disposed inside the housing and corresponding to the male thread portion of the leg on the inner peripheral surface. It includes a worm wheel formed with a female thread and screwed to the leg so that it can be lifted up and down, a worm engaged with the worm wheel to rotate the worm wheel, and a worm shaft provided to rotate the worm and separable from the worm. The housing includes a locking portion provided to prevent the worm shaft coupled to the worm from being separated from the housing.

A height adjustment device according to the spirit of the present disclosure includes a housing, a leg penetrating the housing, a worm wheel disposed inside the housing and coupled to the leg to enable elevation on the leg, and engaging the worm wheel to rotate the worm wheel. A worm, provided to rotate the worm, a worm shaft separable from the worm, and the worm shaft is inserted into the housing to guide the worm to be coupled to the worm, and the worm shaft coupled to the worm is outside the housing. It includes a locking portion provided to prevent it from coming off.

Figure 1 is a perspective view showing a refrigerator, a type of home appliance, according to an embodiment of the present disclosure.
FIG. 2 is an exploded perspective view of the height adjustment device installed at the rear of the refrigerator shown in FIG. 1.
Figure 3 is a perspective view showing a height adjustment device according to one embodiment.
Figure 4 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.
Figure 5 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.
Figure 6 is a cross-sectional view showing the worm wheel of the height adjustment device moving up and down according to one embodiment.
Figure 7 is a cross-sectional view showing the worm wheel of the height adjustment device according to one embodiment being raised.
Figure 8 is a cross-sectional view showing the worm wheel of the height adjustment device according to one embodiment being raised and the legs separated.
Figure 9 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.
Figure 10 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.
Figure 11 is a perspective view showing the worm shaft separated from the height adjustment device according to one embodiment.
Figure 12 is an enlarged view of the locking portion of the height adjustment device according to one embodiment.
Figure 13 is a diagram showing the process of inserting the worm shaft of the height adjustment device into the housing according to one embodiment.
Figure 14 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.
Figure 15 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.
Figure 16 is a perspective view showing the height adjustment device being coupled to the main body and rotated according to one embodiment.
Figure 17 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.
Figure 18 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.
Figure 19 is a perspective view showing the height adjustment device being rotated by being coupled to the main body according to one embodiment.
Figure 20 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.
Figure 21 is a perspective view from below showing the process of attaching the height adjustment device to the main body according to one embodiment.
Figure 22 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.
Figure 23 is an exploded perspective view of the configuration of a height adjustment device according to one embodiment.
Figure 24 is a cross-sectional view showing a height adjustment device according to an embodiment.
Figure 25 is a perspective view of a height adjustment device according to one embodiment.
Figure 26 is a perspective view of a worm shaft of a height adjustment device according to an embodiment coupled to a surrounding structure.
Figure 27 is a perspective view of the worm shaft of the height adjustment device according to one embodiment coupled to the surrounding structure.
Figure 28 is a perspective view of the worm shaft of the height adjustment device according to one embodiment coupled to the surrounding structure.

The various embodiments of the present disclosure and the terms used herein are not intended to limit the technical features described in the present disclosure to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments.

In connection with the description of the drawings, similar reference numbers may be used for similar or related components.

The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise.

In the present disclosure, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof.

The term “and/or” includes any element of a plurality of related described elements or a combination of a plurality of related described elements.

Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one element from another, and may be used to distinguish such elements in other respects, such as importance or order) is not limited.

In addition, terms such as 'front', 'rear', 'top', 'bottom', 'side', 'left', 'right', 'upper', and 'lower' used in the present disclosure are defined based on the drawings. and the shape and location of each component are not limited by this term.

Terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the present disclosure, but are not intended to include one or more other features, numbers, or steps. , does not exclude in advance the possibility of the existence or addition of operations, components, parts, or combinations thereof.

When a component is said to be “connected,” “coupled,” “supported,” or “in contact” with another component, this means not only when the components are directly connected, coupled, supported, or in contact, but also when a third component This includes cases where it is indirectly connected, coupled, supported, or contacted through.

When a component is said to be located “on” another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components.

A refrigerator according to an embodiment may include a main body.

The “main body” may include an inner box, an outer box disposed on the outside of the inner box, and an insulating material provided between the inner box and the outer box.

The “inner box” may include at least one of a case, plate, panel, or liner that forms the storage compartment. The inner case may be formed as a single body or may be formed by assembling a plurality of plates. The “outer case” may form the exterior of the main body and may be joined to the outside of the inner case such that an insulating material is disposed between the inner case and the outer case.

The “insulation material” can insulate the inside and outside of the storage room so that the temperature inside the storage room can be maintained at a set appropriate temperature without being affected by the environment outside the storage room. According to one embodiment, the insulation material may include a foam insulation material. A foam insulation material can be formed by injecting and foaming urethane foam mixed with polyurethane and a foaming agent between the inner and outer wounds.

According to one embodiment, the insulation material may include a vacuum insulation material in addition to the foam insulation material, or the insulation material may be composed of only a vacuum insulation material instead of the foam insulation material. The vacuum insulator may include a core material and an outer shell material that accommodates the core material and seals the interior with a vacuum or a pressure close to vacuum. However, the insulation material is not limited to the foam insulation material or vacuum insulation material described above and may include various materials that can be used for insulation.

“Storage room” may include a space defined by an internal container. The storage compartment may further include an inner box that defines a space corresponding to the storage compartment. A variety of items, such as food, medicine, and cosmetics, can be stored in the storage room, and the storage room can be formed so that at least one side is open for loading and unloading goods.

A refrigerator may include one or more storage compartments. When two or more storage compartments are formed in a refrigerator, each storage compartment can have a different purpose and be maintained at a different temperature. To this end, each storage compartment may be partitioned off from each other by a partition wall containing an insulating material.

The storage room may be maintained at an appropriate temperature range depending on the purpose, and may include a “refrigerator room,” “freezer room,” or “alternate temperature room” classified according to the use and/or temperature range. The refrigerator compartment can be maintained at an appropriate temperature for refrigerating products, and the freezer compartment can be maintained at an appropriate temperature for frozen storage of products. “Refrigeration” can mean cooling items to the point where they are cold without freezing. For example, a refrigerated room may be maintained in the range of 0 degrees Celsius to +7 degrees Celsius. “Freezing” can mean freezing or cooling an item to remain frozen, for example, a freezer may be maintained in a range of -20 degrees Celsius to -1 degree Celsius. The alternate temperature room can be used as either a refrigerator room or a freezer room, with or without the user's choice.

The storage room may be called by various names such as "vegetable room", "fresh room", "cooling room", and "ice-making room" in addition to names such as "refrigerator room", "freezer room", and "cold storage room", and is used hereinafter as "refrigerator room". Terms such as ", "freezing room" and "alternate temperature room" should be understood to encompass storage rooms with corresponding uses and temperature ranges, respectively.

According to one embodiment, the refrigerator may include at least one door configured to open and close one open side of the storage compartment. A door may be provided to open and close one or more storage compartments, or a single door may be provided to open and close a plurality of storage compartments. The door may be rotatably or slidingly installed on the front of the main body.

The “door” may be configured to seal the storage compartment when the door is closed. The door may include insulation, like the body, to insulate the storage compartment when the door is closed.

According to one embodiment, the door may include a door outer plate forming the front of the door, a door inner plate forming the rear of the door and facing the storage room, an upper cap, a lower cap, and a door insulation provided inside them. there is.

A gasket may be provided on the edge of the inner plate of the door to seal the storage compartment by coming into close contact with the front of the main body when the door is closed. The door inner plate may include a dyke that protrudes rearward so that a door basket for storing items is mounted.

According to one embodiment, the door may include a door body and a front panel that is detachably coupled to the front of the door body and forms the front of the door. The door body may include a door outer plate that forms the front of the door body, a door inner plate that forms the rear of the door body and faces the storage room, an upper cap, a lower cap, and a door insulator provided inside them.

Refrigerators are classified into French Door Type, Side-by-Side Type, BMF (Bottom Mounted Freezer), TMF (Top Mounted Freezer), or 1-door refrigerator depending on the arrangement of the door and storage compartment. can be distinguished.

According to one embodiment, the refrigerator may include a cold air supply device configured to supply cold air to a storage compartment.

A “cold air supply device” may include a machine, appliance, electronic device, and/or a combination system capable of generating cold air and directing cold air to cool a storage compartment.

According to one embodiment, the cold air supply device may generate cold air through a refrigeration cycle including compression, condensation, expansion, and evaporation processes of the refrigerant. To this end, the cold air supply device may include a refrigeration cycle device having a compressor, a condenser, an expansion device, and an evaporator capable of driving the refrigeration cycle. According to one embodiment, the cold air supply device may include a semiconductor such as a thermoelectric element. Thermoelectric elements can cool the storage compartment by generating heat and cooling through the Peltier effect.

According to one embodiment, the refrigerator may include a machine room in which at least some parts belonging to the cold air supply device are arranged.

The “machine room” may be arranged to be partitioned and insulated from the storage room to prevent heat generated from parts placed in the machine room from being transferred to the storage room. The inside of the machine room may be configured to communicate with the outside of the main body to dissipate heat from the components placed inside the machine room.

According to one embodiment, the refrigerator may include a dispenser provided on the door to provide water and/or ice. The dispenser may be provided on the door so that the user can access it without opening the door.

According to one embodiment, the refrigerator may include an ice-making device that produces ice. The ice making device may include an ice making tray that stores water, an ice moving device that separates ice from the ice making tray, and an ice bucket that stores ice generated in the ice making tray.

According to one embodiment, a refrigerator may include a control unit for controlling the refrigerator.

The “control unit” may include a memory that stores or remembers programs and/or data for controlling the refrigerator, and a processor that outputs control signals for controlling cold air supply devices, etc. according to the programs and/or data stored in the memory. You can.

Memory stores or records various information, data, commands, programs, etc. necessary for the operation of the refrigerator. The memory can store temporary data generated while generating control signals for controlling components included in the refrigerator. The memory may include at least one of volatile memory or non-volatile memory, or a combination thereof.

The processor controls the overall operation of the refrigerator. The processor can control the components of the refrigerator by executing programs stored in memory. The processor may include a separate NPU that performs the operations of the artificial intelligence model. Additionally, the processor may include a central processing unit, a graphics processor (GPU), etc. The processor may generate a control signal to control the operation of the cold air supply. For example, the processor may receive temperature information of the storage compartment from a temperature sensor and generate a cooling control signal to control the operation of the cold air supply device based on the temperature information of the storage compartment.

Additionally, the processor may process user input of the user interface and control the operation of the user interface according to programs and/or data memorized/stored in the memory. The user interface may be provided using an input interface and an output interface. The processor may receive user input from a user interface. Additionally, the processor may transmit a display control signal and image data for displaying an image on the user interface to the user interface in response to a user input.

The processor and memory may be provided integrally or may be provided separately. A processor may include one or more processors. For example, the processor may include a main processor and at least one subprocessor. The memory may include one or more memories.

According to one embodiment, a refrigerator may include a processor and a memory that control all of the components included in the refrigerator, and may include a plurality of processors and a plurality of memories that individually control the components of the refrigerator. For example, a refrigerator may include a processor and memory that control the operation of a cold air supply device according to the output of a temperature sensor. Additionally, the refrigerator may be separately equipped with a processor and memory that control the operation of the user interface according to user input.

The communication module can communicate with external devices such as servers, mobile devices, and other home appliances through a nearby access point (AP). An access repeater (AP) can connect a local area network (LAN) to which a refrigerator or user device is connected to a wide area network (WAN) to which a server is connected. The refrigerator or user device may be connected to the server via a wide area network (WAN).

The input interface may include keys, a touch screen, a microphone, etc. The input interface can receive user input and pass it to the processor.

The output interface may include a display, a speaker, etc. The output interface can output various notifications, messages, information, etc. generated by the processor.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

In addition, hereinafter, for convenience of explanation, a refrigerator is used as an example, but the configuration of the present disclosure is not limited thereto and can be applied to various home appliances including a main body. For example, the configuration of the present disclosure can be applied to washing machines, dishwashers, air conditioners, etc. The configuration of the present disclosure can be applied to furniture such as beds and closets in addition to home appliances.

Meanwhile, in an indoor space where home appliances are installed, it can be defined that the ceiling is formed at the “upper” and the ground is formed at the “lower”. Additionally, if the home appliance is built-in, the user-accessible direction can be defined as “front” and the direction in contact with the wall can be defined as “rear.”

Figure 1 is a perspective view showing a refrigerator, a type of home appliance, according to an embodiment of the present disclosure.

FIG. 2 is an exploded perspective view of the height adjustment device installed at the rear of the refrigerator shown in FIG. 1.

In Figures 1 and 2, for convenience of explanation, a refrigerator 1 is shown as an example, including a main body 10 with a single storage compartment 13 formed therein and a single door 30 that opens and closes the storage compartment 13. , the present disclosure is not limited thereto. For example, the main body 10 according to the present disclosure may include a plurality of storage compartments divided into a refrigerator compartment and a freezer compartment, and may include a plurality of doors that open and close each storage compartment.

For example, the refrigerator 1 according to the present disclosure may be a side-by-side type in which a refrigerator compartment and a freezer compartment are arranged on the left and right, or a bottom mounted freezer type in which a refrigerator compartment is formed on the upper side and a freezer compartment is formed on the lower side. Alternatively, the refrigerator 1 according to the present disclosure may be a French-door (FDR) type in which a plurality of doors opens and closes with respect to at least one of the plurality of storage chambers.

Referring to FIGS. 1 and 2 , the refrigerator 1 may include a main body 10 that forms the exterior and a door 30 that opens and closes the main body 10 . The door 30 may be rotatably coupled to the main body 10 to open and close the storage compartment 13 formed inside the main body 10. The door 30 may be provided in the front of the main body 10.

The refrigerator 1 may include a cooling system (not shown) that supplies cold air to the storage compartment 13. The cooling system may include a compressor (not shown), a condenser (not shown), an evaporator (not shown), and a refrigerant pipe (not shown) through which the refrigerant flows.

By the cooling system, if the storage compartment 13 is a refrigerator, the interior of the storage compartment 13 is maintained at approximately 0 to 5 degrees Celsius, allowing food to be refrigerated. If the storage compartment 13 is a freezer, the interior of the storage compartment 13 is maintained at approximately 0 to 5 degrees Celsius. It is maintained at approximately 0 to -30 degrees Celsius, allowing food to be frozen and stored.

The main body 10 may include an outer shell 11 forming the exterior and an inner wound 12 forming a storage compartment 13 inside the outer shell 11 . The hinge assembly 35 that rotatably couples the door 30 to the main body 10 may be coupled to the outer case 11 .

The inner case 12 may form a storage compartment 13 to store food, etc. therein. The storage compartment 13 may be provided with a shelf 14 on which food can be placed to facilitate food storage.

An insulating material (not shown) is foamed between the outer box 11 and the inner box 12 to couple the outer box 11 and the inner box 12 to each other, insulating the inside of the storage compartment 13 and the outside of the main body 10 and the storage compartment 13. ) can prevent cold air from leaking to the outside.

The refrigerator 1 may include a height adjustment device 100. The height adjustment device 100 is installed in the refrigerator 1 and can adjust the height of the refrigerator 1 or the horizontal level of the refrigerator 1.

The height adjustment device 100 may be installed at the bottom of the refrigerator 1. The height adjustment device 100 may be located at each corner of a square corner on the bottom of the refrigerator 1. The height adjustment device 100 may be comprised of a front height adjustment device provided at the front of the refrigerator 1 and a rear height adjustment device provided at the rear.

If the height adjustment device 100 is installed at the rear of the refrigerator 1, user accessibility may be reduced. Accordingly, the user can insert the worm shaft 350 from the front of the refrigerator 1 to the rear of the refrigerator 1 and insert it into the housing 110 of the height adjustment device 100. Thereafter, by rotating the worm shaft 350, the housing 110 of the height adjustment device 100 is raised and lowered, and the main body 10 coupled thereto is raised and lowered, thereby adjusting the height and/or level of the refrigerator 1. . Hereinafter, the description will mainly take the case where the height adjustment device is installed at the rear as an example.

Referring to FIG. 2, the height adjustment device 100 may be coupled to the lower part of the refrigerator 1. The height adjustment device 100 may be coupled to the main body 10. The height adjustment device 100 may be coupled to the outer case 11. The height adjustment device 100 may be coupled to the coupling portion 11c formed at the lower portion of the trauma 11. The height adjustment device 100 may be coupled to the housing coupling hole 15 of the coupling portion 11c.

The height adjustment device 100 can be installed in the refrigerator 1 with the worm shaft 350 separated. That is, manufacturing costs can be reduced by installing the height adjustment device 100 in the refrigerator 1 without the worm shaft 350.

If necessary, the user can use the worm shaft 350 to adjust the height and/or level of the refrigerator 1 and then remove the worm shaft 350. Accordingly, since the worm shaft 350 is not exposed to the outside under normal circumstances, aesthetics can be improved.

Figure 3 is a perspective view showing a height adjustment device according to one embodiment.

Figure 4 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.

Figure 5 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.

Figure 6 is a cross-sectional view showing the worm wheel of the height adjustment device moving up and down according to one embodiment.

Figure 7 is a cross-sectional view showing the worm wheel of the height adjustment device according to one embodiment being raised.

Figure 8 is a cross-sectional view showing the worm wheel of the height adjustment device according to one embodiment being raised and the legs separated.

Height adjustment device 100 may include a housing 110 . The housing 110 may form the exterior of the height adjustment device 100. A receiving space 118 may be formed inside the housing 110. By accommodating the internal structure of the height adjustment device 100 in the accommodation space 118, the height adjustment device 100 can be implemented in a simple kit form. Accordingly, the height adjustment device 100 can be easily installed in the main body 10.

Housing 110 may include an upper housing 111 and a lower housing 112. The upper housing 111 may be disposed adjacent to the main body 10 of the refrigerator 1. The upper housing 111 may be arranged to face the outer case 11. The lower housing 112 may be placed adjacent to the ground. The lower housing 112 may be arranged to face the ground.

The upper housing 111 and lower housing 112 may be combined. However, the present invention is not limited to this, and the upper housing 111 and lower housing 112 may be formed as one piece.

The upper housing 111 may include an upper housing fastening portion 113a, and the lower housing 112 may include a lower housing fastening portion 113b. The upper housing fastening portion 113a may have a locking protrusion shape. The lower housing fastening portion 113b may have a hook shape corresponding to the locking protrusion. Alternatively, the upper housing fastening part 113a may have a hook shape and the lower housing fastening part 113b may have a locking protrusion shape. The housing 110 can be easily coupled to the upper housing fastening portion 113a and the lower housing fastening portion 113b.

The housing 110 may include a coupling protrusion 114. The height adjustment device 100 may be coupled to the coupling portion 11c of the external wound 11 by the coupling protrusion 114. The coupling protrusion 114 may be provided on the upper housing 111. The coupling protrusion 114 may be formed to protrude upward. The coupling protrusions 114 may be provided in plural numbers.

The coupling protrusion 114 may include a boss portion 116 and a hook portion 115. The boss portion 116 and the hook portion 115 may be provided as a pair. The hook portion 115 may be provided to be pressed toward the boss portion 116.

The housing 110 may include a housing through-hole 117 through which the leg 400 can pass. The housing through-hole 117 may be formed approximately at the center of the housing 110. The housing through-hole 117 may have an approximately circular shape. Specifically, the housing through hole 117 may have a D-cut oval shape. For example, the housing through hole 117 may have a square shape at the center and a semicircle shape on both sides of the square shape. However, the present disclosure is not limited to this, and the housing through-hole 117 may be provided in various shapes.

The housing through-hole 117 may include an upper housing through-hole 117a formed in the upper housing 111 and a lower housing through-hole 117b formed in the lower housing 112. The lower housing through-hole (117b) may be formed to correspond to the position of the upper housing through-hole (117a).

The height adjustment device 100 may include a worm wheel 200. The worm wheel 200 may be placed inside the housing 110. The worm wheel 200 may include a worm wheel through hole 202 through which the leg 400 can pass. The worm wheel through hole 202 may be formed approximately at the center of the worm wheel 200. The worm wheel through hole 202 may be formed to correspond to the position of the housing through hole 117.

A female thread portion 201 may be provided on the outer peripheral surface of the worm wheel through hole 202. The male thread portion 402 of the leg 400 may be screwed to the female thread portion 201 of the worm wheel 200. The female thread portion 201 may be provided to engage with the male thread portion 402 of the leg 400.

The height adjustment device 100 may include a worm 300. The worm 300 may be placed inside the housing 110. The worm 300 may be provided to rotate the worm wheel 200. The rotation axis of the worm 300 may be provided perpendicular to the rotation axis of the worm wheel 200. The worm 300 may be engaged with the worm wheel 200. The worm engaging portion 301 of the worm 300 may be engaged with the worm wheel 200.

A worm insertion portion 302 to which the worm shaft 350 is coupled may be provided at one end of the worm 300. The worm insertion portion 302 may be connected to the worm engaging portion 301. The worm insertion portion 302 may include a wormhole 303 into which the insertion plate 352 of the worm shaft 350 is inserted.

The wormhole 303 may be provided to correspond to the shape of the insertion plate 352. The wormhole 303 may have a substantially rectangular shape. The wormhole 303 may be formed in a straight line. However, the present disclosure is not limited to this, and the wormhole 303 may be provided in a different shape.

The height adjustment device 100 may include a worm shaft 350. The worm shaft 350 may be combined with the worm 300 to rotate the worm 300. The worm shaft 350 may be detachable from the worm 300.

The worm shaft 350 may include an insertion portion 351 coupled to the worm 300. The insertion portion 351 may be formed at one end of the worm shaft 350. The insertion portion 351 may include an insertion plate 352. The insertion plate 352 may have a rectangular parallelepiped shape. The insertion plate 352 may have a linear shape.

The worm shaft 350 may include a handle portion 357 formed on the opposite side of the insertion portion 351. The handle portion 357 may be formed at the other end of the worm shaft 350. The user can hold the handle portion 357 to couple or separate the worm shaft 350 from the worm 300, or rotate it.

The worm shaft 350 may include a rib portion 355. The rib portion 355 may extend between the insertion portion 351 and the handle portion 357. The rib portion 355 may have a cylindrical shape. The cross-sectional area of the rib portion 355 may be circular.

The height adjustment device 100 may include a locking unit 120. The locking part 120 may be formed in the housing 110.

Height adjustment device 100 may include legs 400 . Legs 400 may be arranged to penetrate the inside of housing 110. The leg 400 may penetrate the housing through hole 117 and the worm wheel through hole 202.

The leg 400 may include a leg body 401 that is provided to penetrate the housing 110. The leg body 401 may protrude upward from the support plate 405. The leg body 401 may penetrate the housing through hole 117 and the worm wheel through hole 202.

The leg 400 may include a support plate 405 provided on the lower part of the leg body 401. The support plate 405 may support the leg body 401. The support plate 405 may be in contact with the ground. The support plate 405 may have a circular plate shape. The support plate 405 may be provided to be larger than the cross-sectional area of the leg body 401.

The leg body 401 may include a male thread portion 402. Screw threads may be formed on the outer peripheral surface of the male thread portion 402. The male thread portion 402 may be engaged with the female thread portion 201 of the worm wheel 200.

The leg body 401 may include a head portion 403. The head portion 403 may be provided at one end of the male thread portion 402. The head portion 403 may be provided at one end of the external thread portion 402 adjacent to the outer wound 11. The head portion 403 may be provided on an upper portion of the male thread portion 402.

The head portion 403 may not be threaded. The outer peripheral surface of the head portion 403 may include a smooth surface. The outer peripheral surface of the head portion 403 may include a curved surface. The cross-sectional area of the head portion 403 may be smaller than the cross-sectional area of the male thread portion 402.

The outer peripheral surface of the head portion 403 may include an inclined surface 404. The head portion 403 may include an inclined surface 404 that slopes upward toward the external wound 11 as it approaches the center. The inclined surface 404 may have a conical shape convex toward the top. The cross-sectional area of one end adjacent to the male thread portion 402 of the head portion 403 may be formed to be larger than the cross-sectional area of the other end located on the opposite side.

Referring to FIG. 5 , the wormhole 303 may include a first wormhole 303a formed at one end of the worm 300 and a second wormhole 303b formed at the other end located opposite to the one end. The locking unit 120 may include a first locking unit 120a facing the first wormhole 303a and a second locking unit 120b facing the second wormhole 303b. The first locking part 120a may be formed at one end of the housing, and the second locking part 120b may be formed at the other end located opposite to the one end.

That is, since a plurality of wormholes 303a and 303b and a plurality of locking parts 120a and 120b are provided, the worm shaft 350 can be inserted into the housing 110 in multiple directions. Accordingly, the accessibility of the user inserting the worm shaft 350 into the height adjustment device 100 can be improved.

The wormhole 303 may include a first groove 304 and a second groove 305 corresponding to the shape of the insertion plate 352. Since the insertion plate 352 can be inserted into the first groove 304 and/or the second groove 305. The worm shaft 350 can be easily inserted into the worm 300. The second groove 305 may be provided to be perpendicular to the first groove 304. The centers of the first groove 304 and the second groove 305 may coincide. The first groove 304 and the second groove 305 may form a tens shape. However, the present disclosure is not limited to this, and the wormhole 303 may include three or more grooves.

Referring to FIGS. 6 to 8 , the worm wheel 200 may be raised and lowered by rotating the worm 300 with respect to the leg 400 . The worm wheel 200 can move up and down with respect to the leg body 401.

The housing 110 may rise and fall as the worm wheel 200 rises and falls. Since the housing 110 is vertically coupled to the coupling portion 11c of the outer trauma 11, the coupling portion 11c of the outer trauma 11 can be raised and lowered by raising and lowering the housing 110. That is, the height and/or level of the refrigerator 1 can be adjusted by raising and lowering the main body 10 together with the raising and lowering of the worm wheel 200.

Referring to FIG. 8, when the worm wheel 200 is lifted above a certain height, the leg 400 may be separated from the worm wheel through hole 202 and/or the housing through hole 117. At this time, it may be difficult to reconnect the worm wheel through hole 202 and/or the housing through hole 117 to the leg 400. In particular, when the height adjustment device 100 is placed at the rear of the refrigerator 1 and has poor user accessibility, it may be difficult to engage the male thread portion 402 of the leg 400 with the female thread portion 201 of the worm wheel 200. You can.

The leg 400 of the present disclosure may include a head portion 403 that is not threaded. Since the outer peripheral surface of the head portion 403 is formed smoothly, it can be easily coupled to the inlet of the worm wheel through hole 202 and/or the housing through hole 117.

Additionally, since the head portion 403 includes an inclined surface 404, it can be easily coupled to the worm wheel through-hole 202 and/or the housing through-hole 117. Specifically, since the inclined surface 404 is inclined upward toward the center of the worm wheel through-hole 202 and/or the housing through-hole 117, the leg 400 is positioned at the worm wheel through-hole 202 and/or the housing through-hole 117. ) can be moved toward the center and easily combined.

Figure 9 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.

Figure 10 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.

The height adjustment device 100 may be coupled to the outer case 11. The trauma 11 may include a coupling portion 11c to which the height adjustment device 100 can be coupled. The coupling portion 11c may include a coupling hole 15.

The coupling hole 15 may include a housing coupling hole 17. The housing coupling hole 17 may be provided so that the coupling protrusion 114 of the height adjustment device 100 is coupled thereto. The housing coupling hole 17 may include a first housing coupling hole 17a and a second housing coupling hole 17b.

The first housing coupling hole 17a may be provided to correspond to the shape of the coupling protrusion 114. The first housing coupling hole 17a may have a square shape.

The second housing coupling hole 17b may include a fitting portion 18 and an extension portion 19 extending from the fitting portion 18. The fitting portion 18 may be provided to correspond to the shape of the coupling protrusion 114. The extension portion 19 may extend from the fitting portion 18.

The first extension portion 19a extends from the fitting portion 18 to secure a coupling space so that the coupling protrusion 114 coupled to the second housing coupling hole 17b can be easily coupled and/or separated. . Accordingly, the second housing coupling hole 17b can be formed larger than the size of the coupling protrusion 114, so that the coupling protrusion 114 can be easily coupled and/or separated.

The second extension portion 19b may be provided by bending from the fitting portion 18. The second extension part 19b may extend from the first extension part 19a. By means of the second extension portion 19b, the engaging protrusion 114 can be easily coupled to the engaging portion 11c of the external trauma 11 even at a rotated angle. Additionally, the rigidity of the coupling portion 11c may be improved by the second extension portion 19b.

After one of the coupling protrusions 114 is coupled to the first housing coupling hole 17a, the remaining coupling protrusion 114 can be coupled to the second housing coupling hole 17b. At this time, the remaining coupling protrusion 114 can be easily coupled to the second housing coupling hole 17b by pressing the hook portion 115 coupled to the first housing coupling hole 17a.

Since the second housing coupling hole 17b includes an extension portion 19, a space where the coupling protrusion 114 can be coupled is secured, and the coupling protrusion 114 can be more easily coupled.

When coupling the coupling protrusion 114 to the housing coupling hole 17, the boss part 116 is first coupled to the housing coupling hole 17, and then the hook part 115 is pressed and coupled to the housing coupling hole 17. You can do it.

When separating the height adjustment device 100 from the engaging portion 11c of the outer case 11, the engaging protrusion 114 can be easily separated from the housing engaging hole 17 by pressing the hook portion 115.

The coupling hole 15 may include a leg hole 16. The leg hole 16 may be provided so that the leg 400 of the height adjustment device 100 is coupled thereto. Leg 400 may penetrate leg hole 16. The leg hole 16 may be provided to correspond to the shape of the leg 400. The leg hole 16 may have a circular shape. The leg hole 16 may be disposed between the first housing coupling hole 17a and the second housing coupling hole 17b.

Referring to FIG. 10 , the housing 110 of the height adjustment device 100 may be fixed to the coupling portion 11c of the external wound 11. As the worm shaft 350 is inserted into the housing 110 and the worm wheel 200 is rotated, the housing 110 can be raised and lowered. At this time, since the coupling portion 11c of the outer trauma 11 is coupled with the housing 110, the outer trauma 11 can be raised and lowered together with the raising and lowering of the housing 110.

Figure 11 is a perspective view showing the worm shaft separated from the height adjustment device according to one embodiment.

Figure 12 is an enlarged view of the locking portion of the height adjustment device according to one embodiment.

Figure 13 is a diagram showing the process of inserting the worm shaft of the height adjustment device into the housing according to one embodiment.

The worm shaft 350 may be provided outside the housing 110. The worm shaft 350 may be inserted into the housing 110. The worm shaft 350 may be attached to or detached from the worm 300. The worm shaft 350 can be coupled to and separated from the worm 300.

The height adjustment device 100 may include a locking unit 120. The locking unit 120 can prevent the worm shaft 350 coupled to the worm 300 from being separated from the housing 110. The locking part 120 may be formed in the housing 110.

However, the present disclosure is not limited to this, and the locking portion 120 may be formed on the worm shaft 350 and/or the worm 300.

For example, one of the worm shaft 350 and the worm 300 may include a metal material, and the other may include a magnet. An attractive force may act between the worm shaft 350 and the worm 300. The worm shaft 350 can be guided to be coupled to the worm 300 by manpower, and the worm shaft 350 coupled to the worm 300 can be prevented from being easily separated.

Alternatively, one of the worm shaft 350 and the housing 110 may include a metal material, and the other may include a magnet. In addition, the worm shaft 350 may be coupled to the worm 300 in an interference fit form.

The housing 110 may include a locking portion 120. The locking unit 120 may be provided so that the worm shaft 350 can enter and exit the housing 110 only at a certain angle and/or in a certain direction.

The rotation axis of the worm shaft 350 may extend along the first direction (A-A'). The rib portion 355 may extend along the first direction (A-A').

The insertion portion 351 of the worm shaft 350 may extend along a second direction (B-B') perpendicular to the first direction (A-A'). The insertion plate 352 may extend along the second direction (B-B').

The locking unit 120 may include a first hole 130 formed in the housing 110. The first hole 130 may be provided to allow the worm shaft 350 to enter and exit the housing 110 . The insertion portion 351 of the worm shaft 350 can be entered and exited through the first hole 130.

The first hole 130 may extend along the second direction (B-B'). The first hole 130 may be formed to be the same or larger than the size of the insertion part 351 so that the insertion part 351 can be entered and exited. The first hole 130 may be provided to correspond to the shape of the insertion portion 351. The first hole 130 may have a rectangular shape corresponding to the shape of the insertion plate 352, or may have an approximately quadrilateral shape.

The locking unit 120 may include a second hole 140 formed in the housing 110. The second hole 140 may be formed extending from the first hole 130. The second hole 140 may extend from the first hole 130 in the third direction (C-C'). The third direction (C-C') may be perpendicular to the first direction (A-A') and the second direction (B-B'). The second hole 140 may be formed to extend upward or downward from the first hole 130. The second hole 140 may extend from approximately the center of the first hole 130.

The second hole 140 may be provided at a location corresponding to the wormhole 303. The center (F) of the wormhole 303 may be deviated from the first hole 130 toward the second hole 140 . With respect to the second direction (B-B') and the third direction (C-C'), the center (F) of the wormhole (303) is the second hole (140) from the center (D) of the first hole (130). It can be arranged to face the center (E). The center (F) of the wormhole 303 may be disposed to be deviated upward or downward from the center (D) of the first hole 130.

The second hole 140 may guide the moving position of the worm shaft 350. The second hole 140 may guide the moving position of the worm shaft 350 so that the worm shaft 350 inserted into the housing 110 through the first hole 130 is coupled to the worm 300. Specifically, after the insertion plate 352 is inserted into the housing 110 through the first hole 130, the rib portion 355 is moved toward the top or bottom where the second hole 140 is located to insert the insertion plate. (352) may be coupled to the worm (300).

The second hole 140 may include a curve 141. The second hole 140 may include a curve 141 corresponding to the shape of the rib portion 355 to facilitate rotation of the worm shaft 350 coupled to the worm 300. The second hole 140 may have a semicircular shape.

The first hole 130 may be provided in either the upper housing 111 or the lower housing 112, and the second hole 140 may be provided in the other. Alternatively, the first hole 130 and the second hole 140 may be formed integrally.

In the second direction B-B', the length L2 of the first hole 130 may be equal to or greater than the length L1 of the insertion portion 351. Accordingly, the insertion plate 352 may penetrate the first hole 130.

In the second direction B-B', the length L2 of the second hole 140 may be smaller than the length L1 of the insertion portion 351. The maximum length L4 extending from the first hole 130 to the second hole 140 in the third direction (C-C') is that of the insertion portion 351 in the second direction (B-B'). It may be provided smaller than the length (L1). Therefore, the insertion plate 352 cannot penetrate the second hole 140, and if it is not inserted horizontally in the second direction (B-B') in which the first hole 130 extends, the locking portion 120 It cannot penetrate.

This will be described in detail with reference to FIG. 13. Referring to (a), if the insertion plate 352 of the worm shaft 350 is not arranged to match the extension direction of the first hole 130, the worm shaft 350 may be inserted into the housing 110. I can't. Therefore, as shown in (b), the user rotates the worm shaft 350 so that the insertion plate 352 is aligned with the extension direction of the first hole 130. Referring to (c), the user inserts the insertion plate 352 into the first hole 130 to insert the worm shaft 350 into the housing 110. At this time, since the insertion plate 352 cannot penetrate the second hole 140, the user must insert the insertion plate 352 so that it faces the upper part of the locking unit 120 where the first hole 130 is located. Referring to (d), the worm shaft 350 may be moved toward the lower portion where the second hole 140 is formed, and the insertion plate 352 may be coupled to the wormhole 303. Afterwards, the worm 300 can be rotated by rotating the worm shaft 350.

Conversely, in order to take the worm shaft 350 out of the housing 110, the worm shaft 350 is separated from the wormhole 303. Thereafter, the worm shaft 350 is moved toward the upper part where the first hole 130 is formed. Thereafter, the worm shaft 350 is rotated so that the insertion plate 352 is aligned with the extension direction of the first hole 130 so that the insertion plate 352 can pass through the first hole 130 and exit. Afterwards, the insertion plate 352 can be taken out through the first hole 130.

That is, in order for the worm shaft 350 to be separated from the wormhole 303 and outside the housing 110, the worm shaft 350 must move from the second hole 140 toward the first hole 130, and also It must be rotated to be arranged to correspond to the direction of extension of the first hole 130. That is, the locking unit 120 may be provided so that the worm shaft 350 can be coupled to and/or separated from the wormhole 303 only in a specific direction. Therefore, it is possible to prevent the worm shaft 350 from easily falling out of the housing 110.

Figure 14 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.

Figure 15 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.

Figure 16 is a perspective view showing the height adjustment device being coupled to the main body and rotated according to one embodiment.

The outer trauma 11 may include a coupling hole 15. The height adjustment device 100 may include a coupling protrusion 114. The coupling protrusion 114 may extend along the circumference of the upper housing through-hole (117a). The coupling protrusion 114 may be provided to surround the leg 400. The coupling protrusion 114 may include a screw shape. The coupling protrusion 114 may include a hook portion 115 and a boss portion 116.

The coupling protrusion 114 may be coupled to the coupling hole 15. The coupling hole 15 may be formed in a circular shape corresponding to the coupling protrusion 114. Referring to FIG. 16, the height adjustment device 100 coupled to the outer trauma 11 may rotate with respect to the outer trauma 11. As the housing 110 rotates, the worm shaft 350 may be inserted into the housing 110 in various directions. Accordingly, the user's accessibility to the height adjustment device 100 may be improved.

Meanwhile, the coupling protrusion 114 may include a screw shape on the outer peripheral surface, so that it can be easily rotated by being coupled to the coupling hole 15. Hereinafter, content that overlaps with the above description will be omitted.

Figure 17 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.

Figure 18 is a perspective view showing a height adjustment device coupled to a main body according to an embodiment.

Figure 19 is a perspective view showing the height adjustment device being rotated by being coupled to the main body according to one embodiment.

The outer trauma 11 may include a coupling hole 15. The coupling hole 15 may include a leg hole 16 and a housing coupling hole 17. The housing coupling hole 17 may extend along the circumference.

The coupling protrusion 114 may be coupled to the housing coupling hole 17. The coupling protrusion 114 coupled to the housing coupling hole 17 can be rotated along the circumference. Referring to FIG. 19, the height adjustment device 100 coupled to the outer trauma 11 may rotate with respect to the outer trauma 11. As the housing 110 rotates, the worm shaft 350 may be inserted into the housing 110 in various directions. Hereinafter, content that overlaps with the above description will be omitted.

Figure 20 is a perspective view showing the process of attaching the height adjustment device to the main body according to one embodiment.

Figure 21 is a perspective view from below showing the process of attaching the height adjustment device to the main body according to one embodiment.

The outer trauma 11 may include a coupling hole 15. The height adjustment device 100 may include a coupling protrusion 114. The coupling protrusion 114 may include a boss portion 116. The boss portion 116 may extend along the perimeter of the upper housing through-hole (117a). The boss portion 116 may be provided to surround the leg 400.

Meanwhile, the coupling protrusion 114 may include a screw shape on the outer peripheral surface, so that it can be easily rotated by being coupled to the coupling hole 15.

The coupling protrusion 114 may be coupled to the coupling hole 15. Referring to FIG. 21, the external trauma 11 may include a fastening plate 20. The fastening plate 20 may face the side of the housing 110. The fastening plate 20 may include a fastening hole 21. The sides of the fastening plate 20 and the housing 110 may be coupled by fastening screws 22. The height adjustment device 100 may be fixed to the outer box 11. Hereinafter, content that overlaps with the above description will be omitted.

Figure 22 is an exploded perspective view of the configuration of a height adjustment device according to an embodiment.

Figure 23 is an exploded perspective view of the configuration of a height adjustment device according to one embodiment.

Figure 24 is a cross-sectional view showing a height adjustment device according to an embodiment.

The height adjustment device 100 may include a lower housing 1112, a worm 1300, a worm wheel 1200, and a leg 1400. In addition, the height adjustment device 100 may include an upper housing and a shaft, but these are omitted as they overlap with those described above.

The leg 1400 may be provided to penetrate the housing through hole 1117 and/or the worm wheel through hole 1202.

The leg 1400 may include a leg body 1401 that is provided to penetrate the lower housing 1112. The leg body 1401 may protrude upward from the support plate 1405. The leg body 1401 may penetrate the housing through hole 1117 and the worm wheel through hole 1202.

The leg 1400 may include a support plate 1405 provided on the lower part of the leg body 1401. The support plate 1405 may support the leg body 1401. The support plate 1405 may be in contact with the ground. The support plate 1405 may have a circular plate shape. The support plate 1405 may be provided with a larger cross-sectional area than the leg body 1401.

The support plate 1405 may have a certain thickness. The support plate 1405 may include a support plate 1405a and a support plate lower surface 1405c. The support plate 1405a may be connected to the leg body 1401. The support plate lower surface 1405c may be arranged to face the ground (G). The support plate lower surface 1405c may be disposed on the opposite side of the support plate 1405a.

The leg body 1401 may include a male thread portion 1402. A screw thread may be formed on the outer peripheral surface of the male thread portion 1402. The male thread portion 1402 may be engaged with the female thread portion 1201 of the whim wheel 1200.

The male threaded portion 1402 may include an upper male threaded portion 1402b and a lower male threaded portion 1402a. The lower end of the male thread portion 1402a may be disposed adjacent to the ground (G). The upper end of the male threaded part (1402b) may be disposed on the opposite side of the lower end of the male threaded part (1402a).

The male threaded portion 1402 may include a thread extending from the upper end of the male threaded portion 1402b to the lower end of the male threaded portion 1402a.

The leg body 1401 may include a head portion 1403. The head portion 1403 may be provided at one end of the male thread portion 1402. The head portion 1403 may be disposed adjacent to the top of the male thread portion (1402b).

The head portion 1403 may be provided at one end of the external thread portion 1402 adjacent to the outer wound 11. The head portion 1403 may be provided on an upper portion of the male thread portion 1402. The head portion 1403 may not be threaded. The head portion 1403 may be disposed above the top of the male thread portion 1402b.

The leg body 1401 may include an idling portion 1406. The idle part 1406 may be provided at the other end of the male thread part 1402. The idle part 1406 may be provided at the lower part of the male thread part 1402. The idling part 1406 may be provided on the opposite side of the head part 1403.

The idling portion 1406 may be provided adjacent to the support plate 1405. The idling portion 1406 may be disposed adjacent to the support plate 1405a. The idle portion 1406 may be disposed adjacent to the lower end of the male thread portion 1402a. The idle part 1406 may be disposed at the lower part of the lower end of the male thread part 1402a.

No threads may be formed in the idle rotating portion 1406. The idling portion 1406 may have a cylindrical shape.

The outer peripheral surface of the idle portion 1406 may include a smooth surface. The outer peripheral surface of the idling portion 1406 may include a curved surface. The cross-sectional area of the idle portion 1406 may be smaller than the cross-sectional area of the male thread portion 1402.

Since the idling portion 1406 is not threaded, it may not mesh with the female thread portion 1201 of the worm wheel 1200.

The idling portion 1406 may be provided so that the worm wheel 1200 can idle with respect to the leg 1400. The idling portion 1406 may be provided so that the female thread portion 1201 of the worm wheel 1200 can idle with respect to the leg body 1401.

The idling portion 1406 may be provided to enable idling while the leg 1400 is inserted into the worm wheel 1200. The idling portion 1406 may be provided so that the leg body 1401 can idle in the worm wheel through hole 1202.

When the user wants to lower the height of the refrigerator 1, the user can lower the housing 1110 of the height adjustment device 100 by rotating the worm shaft 1350. Specifically, by rotating the worm shaft 1350, the worm 1300 coupled to the worm shaft 1350 is rotated, and the worm wheel 1200 can descend while rotating about the leg 1400. At this time, the female thread portion 1201 of the worm wheel 1200 may descend while engaging with the male thread portion 1402 of the leg body 1401.

Meanwhile, the worm wheel 1200 may descend along the male thread portion 1402 of the leg body 1401 and reach the idle rotation portion 1406 of the leg body 1401. Since there are no threads formed in the idle portion 1406, the worm wheel 1200 may no longer engage with the leg 1400. Therefore, even if the worm shaft 1350 and the worm 1300 continue to rotate, the worm wheel 1200 idles with respect to the leg 1400. The worm wheel 1200 may no longer descend. The housing 1110 may not be able to descend any further. Therefore, it is possible to prevent the housing 1110 from being damaged by pressing the support plate 1405 of the leg 1400. Additionally, it is possible to prevent the housing 1110 from being damaged by contact with the ground.

Therefore, the user can rotate the worm shaft 1350 without fear of damage to the support plate 1405 of the leg 1400 even if the worm wheel 1200 descends to the bottom of the leg 1400. Since the worm wheel 1200 can no longer descend from the leg body 1401 by the idle rotation part 1406, there is a risk that the support plate 1405 of the leg 1400 will be damaged even if the user rotates the worm shaft 1350 in both directions. There is no This can increase convenience of use.

Meanwhile, when the user wants to increase the height of the refrigerator 1, the user can raise and lower the housing 1110 of the height adjustment device 100 by rotating the worm shaft 1350 in the opposite direction. At this time, the female thread portion 1201 of the worm wheel 1200 must be raised and lowered while engaging with the male thread portion 1402 of the leg body 1401.

In a state where the female thread portion 1201 of the worm wheel 1200 and the idle portion 1406 of the leg body 1401 are in contact, the worm wheel 1200 only idles with respect to the leg 1400, so the worm wheel 1200 is raised and lowered. Can not. However, if the lower end 1402a of the male thread 1402 is over the female thread 1201 of the worm wheel 1200 due to the weight of the leg 1400, the female thread 1201 and the female thread 1201 are connected by rotation of the worm wheel 1200. The male thread portion 1402 may be engaged. As a result, the worm wheel 1200 can be raised and lowered while rotating again with respect to the leg 1400.

That is, the lower end of the male thread portion 1402a may be connected to the female thread portion 1201 of the worm wheel 1200 due to the weight of the leg 1400. In order for the lower end of the male thread 1402a to span the female thread 1201 of the worm wheel 1200, the leg 1400 must be spaced apart from the ground (G).

Housing 1110 may include a bumper 1150. The bumper 1150 may be provided to space the leg 1400 from the ground (G). The bumper 1150 may be provided to space the support plate 1405 from the ground (G).

Lower housing 1112 may include a bumper 1150. The bumper 1150 may be a portion of the lower housing 1112 that protrudes toward the ground (G). The bumper 1150 may be a portion of the lower housing 1112 that protrudes downward.

The bumper 1150 may include a bumper protruding surface 1151 provided to contact the ground (G). The bumper protruding surface 1151 may include a flat surface and/or a curved surface.

The lower housing 1112 may include a lower housing outer surface 1112b disposed to face the ground G, and a lower housing inner surface 1112a disposed on the opposite side of the lower housing outer surface 1112b.

Lower housing 1112 may include housing depression 1162. The housing depression 1162 may be formed on the lower housing outer surface 1112b. The housing depression 1162 may be a depression in at least a portion of the lower housing outer surface 1112b.

The housing depression 1162 may be a portion where the lower housing outer surface 1112b is depressed toward the lower housing inner surface 1112a. The housing depression 1162 may be formed as a depression upward from the ground (G).

Housing depression 1162 may be provided to accommodate at least a portion of leg 1400. Housing depression 1162 may be provided to receive at least a portion of support plate 1405.

The housing depression 1162 may have an approximately circular shape. The housing depression 1162 may have a shape corresponding to the support plate 1405 of the leg 1400. Housing depression 1162 may correspond to support plate 1405a.

The lower housing 1112 may include a housing protrusion 1161. The housing protrusion 1161 may be formed on the lower housing inner surface 1112a. The housing protrusion 1161 may be a portion in which at least a portion of the lower housing inner surface 1112a protrudes.

The housing protrusion 1161 may have an approximately circular shape. The housing protrusion 1161 may be a portion formed to correspond to the housing depression 1162. The housing protrusion 1161 may be provided on the opposite side of the housing depression 1162. The housing protrusion 1161 may correspond to the shape of the housing depression 1162.

A housing through-hole 1117 may be formed in the housing depression 1162 and the housing protrusion 1161. The housing through hole 1117 may be provided to penetrate the housing depression 1162 and the housing protrusion 1161.

Housing depression 1162 may be provided to receive support plate 1405 of leg 1400. The housing recess 1162 is provided to accommodate at least a portion of the leg 1400, thereby increasing the range in which the housing 1110 can be raised and lowered with respect to the leg 1400.

For example, when the lower housing 1112 does not include the housing depression 1162, the range in which the housing 1110 can be raised and lowered with respect to the leg 1400 is from the support plate 1405a to the top of the male thread portion. It can be up to (1402b). On the other hand, when the lower housing 1112 includes the housing depression 1162, the range in which the housing 1110 can be raised and lowered with respect to the leg 1400 is from the middle point 1405b of the support plate 1405. It may be up to the top of the male thread (1402b).

That is, the housing depression 1162 can increase the elevation and lowering range of the height adjustment device 100. Accordingly, the freedom of installation of the height adjustment device 100 may be increased.

For example, when the height of the lower housing 1112 is 10 mm, the depth at which the housing depression 1162 is depressed may be approximately 3 mm. Accordingly, the overall height of the height adjustment device 100 can be reduced by 3 mm, and the minimum required installation height of the height adjustment device 100 can also be reduced by 3 mm. However, the present disclosure is not limited to this.

As the housing depression 1162 is provided in the lower housing 1112, the housing protrusion 1161 may be formed. The worm wheel 1200 may include a worm wheel depression 1203 corresponding to the housing protrusion 1161.

The worm wheel 1200 may include a worm wheel depression 1203 provided to form an empty space. The worm wheel depression 1203 may be provided so that the worm wheel 1200 is seated in the housing 1110. The worm wheel depression 1203 may be provided so that the worm wheel 1200 is seated on the housing protrusion 1161.

The worm wheel depression 1203 may be depressed from the bottom of the worm wheel 1200 toward the top.

Worm wheel depression 1203 may contact housing projection 1161. The worm wheel depression 1203 may have a shape corresponding to the housing protrusion 1161.

The worm wheel depression 1203 may be formed in the lower part of the worm wheel 1200. The worm wheel depression 1203 may be formed in a portion of the worm wheel 1200 facing the lower housing 1112.

As the worm wheel 1200 includes the worm wheel depression 1203, the overall weight of the worm wheel 1200 can be minimized.

Figure 25 is a perspective view of a height adjustment device according to one embodiment.

Figure 26 is a perspective view of the worm shaft of the height adjustment device according to one embodiment coupled to the surrounding structure.

Figure 27 is a perspective view of the worm shaft of the height adjustment device according to one embodiment coupled to the surrounding structure.

Figure 28 is a perspective view of the worm shaft of the height adjustment device according to one embodiment coupled to the surrounding structure.

The worm shaft 1350 may include a worm shaft locking portion 1360 that is provided to prevent the worm shaft from being separated from the height adjustment device 100. The worm shaft engaging portion 1360 may be provided to prevent the worm shaft 1350 from being separated from the housing 1110. The worm shaft locking portion 1360 may be provided to prevent the worm shaft 1350 from being separated from the worm 1300.

Referring to FIG. 25, the worm shaft engaging portion 1361 may be formed in the rib portion 1355. The worm shaft engaging portion 1361 may be provided adjacent to the worm shaft inserting portion 1351.

The worm shaft engaging portion 1361 may have a circular plate shape. The worm shaft engaging portion 1361 may have a disk shape. However, the present disclosure is not limited to this, and the worm shaft engaging portion 1361 may have various shapes.

The cross-sectional area of the worm shaft engaging portion 1361 may be provided to be larger than the cross-sectional area of the rib portion 1355.

The worm shaft engaging portion 1361 may be provided to be larger than the locking portion 1120 of the housing 1110. The area of the worm shaft engaging portion 1361 may be provided to be larger than the area of the locking portion 1120. The worm shaft engaging portion 1361 may be provided so as not to penetrate the locking portion 1120.

Accordingly, the worm shaft engaging portion 1361 disposed inside the housing 1110 may not be able to move toward the outside of the housing 1110. The worm shaft locking portion 1361 may restrict the movement of the worm shaft 1350. The worm shaft locking portion 1361 may restrain the worm shaft 1350 from moving in the direction A↔A'.

FIG. 25 is a diagram showing a state in which the worm shaft 1350 is inserted into the worm 1300. The worm shaft 1350 may not be separated from the worm 1300 while it is inserted into the worm 1300. The worm shaft 1350 may remain inserted into the worm 1300. At this time, the height adjustment device 100 may be installed in the refrigerator 1 with the worm shaft 1350 inserted.

26 to 28, the refrigerator 1 may include a worm shaft fixing part 40. The worm shaft fixing part 40 may be coupled to the outer case 11 of the refrigerator 1.

The worm shaft fixing part 40 may be provided to prevent the worm shaft 1350 from being separated from the height adjustment device 100. The worm shaft fixing part 40 may be provided to prevent the worm shaft 1350 from being separated from the housing 1110. The worm shaft fixing part 40 may be provided to prevent the worm shaft 1350 from being separated from the worm 1300.

Referring to FIG. 26, the worm shaft fixing part 50 may be coupled to the hinge 35 of the door 30 of the refrigerator 1.

The worm shaft fixing part 50 may include a fixing protrusion 51. The fixing protrusion 51 may have a hook shape. The fixing protrusion 51 may be provided to fix the worm shaft 1350.

The fixing protrusion 51 may fix the rib portion 1355 of the worm shaft 1350. The fixing protrusion 51 can prevent the rib portion of the worm shaft 1350 from moving. The worm shaft 1350 may be inserted into the receiving space formed by the fixing protrusion 51 and fixed to the worm shaft fixing part 50.

The fixing protrusion 51 may restrain the worm shaft 1350 from moving in the A↔A' direction and/or the C↔C' direction.

The embodiments of Figures 25 and 26 can be combined.

Referring to FIG. 27, the refrigerator 1 may include a worm shaft fixing part 60. The worm shaft fixing part 60 may be coupled to the outer case 11 of the refrigerator 1.

The worm shaft fixing part 60 may include a first fixing protrusion 61 and a second fixing protrusion 62. The first fixing protrusion 61 and/or the second fixing protrusion 62 may be provided to fix the worm shaft 1350. The first fixing protrusion 61 may be provided in plural numbers. A plurality of second fixing protrusions 62 may be provided.

The first fixing protrusion 61 and/or the second fixing protrusion 62 may fix the rib portion 1355 of the worm shaft 1350. The first fixing protrusion 61 and the second fixing protrusion 62 may form a space into which the worm shaft 1350 can be inserted. The worm shaft 1350 may be inserted into the receiving space formed by the first fixing protrusion 61 and the second fixing protrusion 62 and fixed to the worm shaft fixing part 60.

The first fixing protrusion 61 may restrain the worm shaft 1350 from moving in the A↔A' direction and/or B↔B' direction. The second fixing protrusion 62 may restrain the worm shaft 1350 from moving in the C↔C' direction.

The worm shaft 1350 may include a worm shaft engaging portion 1362. The worm shaft engaging portion 1362 may be formed in the rib portion 1355. The worm shaft engaging portion 1362 may be provided adjacent to the handle portion 1357.

The worm shaft engaging portion 1362 may have a circular plate shape. The worm shaft engaging portion 1362 may have a disk shape. The cross-sectional area of the worm shaft engaging portion 1362 may be provided to be larger than the cross-sectional area of the rib portion 1355.

The worm shaft locking portion 1362 may be provided to be larger than the accommodation space formed by the first fixing protrusion 61 and the second fixing protrusion 62. The worm shaft locking portion 1362 may be provided so as not to penetrate the receiving space formed by the first fixing protrusion 61 and the second fixing protrusion 62.

The worm shaft locking portion 1362 may be provided to restrain the worm shaft 1350 from moving in the A↔A' direction and/or B↔B' direction and/or C↔C' direction.

Referring to FIG. 28, the refrigerator 1 may include a worm shaft fixing part 70. The worm shaft fixing part 70 may be coupled to the hinge 35 of the door 30 of the refrigerator 1.

The worm shaft fixing part 70 may include a fixing protrusion 71. The fixing protrusion 71 may have a hook shape. The fixing protrusion 71 may be provided to fix the worm shaft 1350.

The fixing protrusion 71 can fix the rib portion 1355 of the worm shaft 1350. The fixing protrusion 71 can prevent the rib portion of the worm shaft 1350 from moving. The worm shaft 1350 may be inserted into the receiving space formed by the fixing protrusion 71 and fixed to the worm shaft fixing part 70.

The fixing protrusion 71 may restrict the worm shaft 1350 from moving in the A↔A' direction and/or B↔B' direction and/or C↔C' direction.

The worm shaft locking portion 1362 may be provided so as not to penetrate the receiving space formed by the fixing protrusion 71. The worm shaft locking portion 1362 may be provided to restrain the worm shaft 1350 from moving in the A↔A' direction and/or B↔B' direction and/or C↔C' direction.

The worm shaft fixing part 60 of FIG. 27 may be placed on the left side of the refrigerator 1, and the worm shaft fixing part 70 of FIG. 28 may be placed on the right side of the refrigerator 1. Or it can be arranged the other way around. However, the present disclosure is not limited to this.

The worm shaft fixing part 40 may be provided with a magnet. The worm shaft fixing part 40 may fix the worm shaft 1350 by magnetism. However, the present disclosure is not limited to this.

In the above, specific embodiments are shown and described. However, it is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

A home appliance according to an embodiment of the present disclosure includes a main body (10); And a height adjustment device 100 that adjusts the height of the main body 10 from the ground, wherein the height adjustment device 100 includes a housing 110 that can be coupled to the lower part of the main body 10; A leg 400 disposed to penetrate the housing 110 and having a male thread portion 402 formed on the outer peripheral surface; A worm wheel is disposed inside the housing 110, has a female thread portion 201 corresponding to the male thread portion 402 of the leg 400 formed on the inner circumferential surface, and is screwed to the leg 400 to enable elevation. 200); a worm 300 engaged with the worm wheel 200 to rotate the worm wheel 200; and a worm shaft 350 that is provided to rotate the worm 300 and is separable from the worm 300, wherein the housing 110 includes the worm shaft (350) coupled to the worm 300. 350 may include a locking portion 120 provided to prevent the housing 110 from coming out of the housing 110 . According to the present disclosure, the height adjustment device 100 can be installed in the refrigerator 1 with the worm shaft 350 separated. That is, manufacturing costs can be reduced by installing the height adjustment device 100 in the refrigerator 1 without the worm shaft 350. Additionally, since the worm shaft 350 is not exposed to the outside under normal circumstances, aesthetics can be improved.

The locking unit 120 includes a first hole 130 provided to allow the worm shaft 350 to enter and exit the housing 110; and a second hole 140 extending from the first hole 130 and guiding the moving position of the worm shaft 350 so that the worm shaft 350 is coupled to the worm 300. there is. According to the present disclosure, the user can be guided to the correct position where the worm shaft 350 is inserted, so convenience of use can be improved.

The worm shaft 350 includes an insertion portion 351 coupled to the worm 300, and the insertion portion 351 extends in a first direction (A-A') along which the rotation axis of the worm shaft 350 extends. ), and the length L2 of the first hole 130 in the second direction (BB') is equal to the length of the insertion portion 351. (L1), and the length (L3) of the second hole 140 in the second direction (B-B') is provided to be smaller than the length (L1) of the insertion portion 351. You can. The second hole 140 extends from the first hole 130 in a third direction (C-C') perpendicular to the first direction (A-A') and the second direction (B-B'). can be extended towards. The maximum length L4 extending from the first hole 130 to the second hole 140 in the third direction (C-C') is the second direction (B- It may be provided smaller than the length (L1) for B'). According to the present disclosure, the worm shaft 350 can be prevented from being easily separated from the worm 300 after the worm shaft 350 is inserted into the worm 300.

The worm 300 includes a wormhole 303 into which the insertion portion 351 of the worm shaft 350 is coupled, and moves in the second direction (B-B') and the third direction (C-C'). ), the center (F) of the wormhole 303 may be arranged to point from the center (D) of the first hole 130 to the center (E) of the second hole 140. According to the present disclosure, the worm shaft 350 can be prevented from being easily separated from the worm 300 after the worm shaft 350 is inserted into the worm 300.

The wormhole 303 includes a first wormhole 303a formed at one end of the worm 300 and a second wormhole 303b formed at the other end located opposite to the one end of the worm 300, The locking part 120 is formed on a first locking part 120a formed on one end of the housing 110 facing the first wormhole 303a and on the other end located opposite to the one end of the housing 110. It may include a second locking unit 120b. According to the present disclosure, a user can insert the worm shaft 350 toward the front or rear of the housing 110. In other words, convenience of use can be improved because it can be inserted in both directions.

The insertion portion 351 of the worm shaft 350 includes an insertion plate 352 having a rectangular shape, and the wormhole 303 has a first groove 304 corresponding to the shape of the insertion plate 352. And it may include a second groove 305 provided to be perpendicular to the first groove 304. According to the present disclosure, the insertion plate 352 of the worm shaft 350 can be more easily inserted into the wormhole 303.

The worm shaft 350 further includes a rib portion 355 that extends from the insertion portion 351 along the first direction (A-A') and has a cylindrical shape, and the second hole 140 is It may include a curve 141 corresponding to the shape of the rib portion 355. According to the present disclosure, after the worm shaft 350 is inserted into the wormhole 303, rotation of the worm shaft 350 may be facilitated.

The housing 110 may include an upper housing 111 that can be coupled to the main body 10 and a lower housing 112 that can be coupled to the upper housing 111. The first hole 130 may be provided in the upper housing 111, and the second hole 140 may be provided in the lower housing 112. According to the present disclosure, the height adjustment device 100 is implemented in the form of a simple kit including the housing 110, so installation can be easy.

The upper housing 111 includes a coupling protrusion 114 protruding toward the main body 10, and the main body 10 may include a coupling hole 15 into which the coupling protrusion 114 is coupled. . According to the present disclosure, the height adjustment device 100 can be easily coupled to the main body 10.

The coupling hole 15 may extend along the circumferential direction. According to the present disclosure, the height adjustment device 100 coupled to the main body 10 can be rotated.

The leg 400 may further include a head portion 403 that protrudes from the male thread portion 402 toward the main body 10 . According to the present disclosure, the outer peripheral surface of the head portion 403 is formed smoothly, so that it can be easily coupled to the inlet of the worm wheel through hole 202 and/or the housing through hole 117.

The head portion 403 may include an inclined surface 404 that slopes upward toward the main body 10 as it approaches the center of the circle. According to the present disclosure, the inclined surface 404 is inclined upward toward the center of the worm wheel through hole 202 and/or the housing through hole 117, so the leg 400 is positioned at the worm wheel through hole 202 and/or the housing through hole 117. It can be moved toward the center of (117) and easily combined.

A height adjustment device according to an embodiment of the present disclosure includes a housing 110; A leg 400 penetrating the housing 110; A worm wheel 200 disposed inside the housing 110 and coupled to the leg 400 so as to be raised and lowered by the leg 400; a worm 300 engaged with the worm wheel 200 to rotate the worm wheel 200; a worm shaft 350 that is provided to rotate the worm 300 and is separable from the worm 300; and guide the worm shaft 350 to be inserted into the housing 110 and coupled to the worm 300, and guide the worm shaft 350 coupled to the worm 300 to the outside of the housing 110. It may include a locking part 120 provided to prevent separation. According to the present disclosure, the worm shaft 350 can be prevented from being easily separated from the worm 300 after the worm shaft 350 is inserted into the worm 300.

The locking unit 120 includes a first hole 130 provided to allow the worm shaft 350 to enter and exit the housing; and a second hole 140 extending from the first hole 130 and guiding the moving position of the worm shaft 350 so that the worm shaft 350 is coupled to the worm 300. there is. According to the present disclosure, the user can be guided to the correct position where the worm shaft 350 is inserted, so convenience of use can be improved.

The worm shaft 350 includes an insertion portion 351 coupled to the worm 300, and the insertion portion 351 extends in a first direction (A-A') along which the rotation axis of the worm shaft 350 extends. ), and the length L2 of the first hole 130 in the second direction (BB') is equal to the length of the insertion portion 351. (L1), and the length (L3) of the second hole 140 in the second direction (B-B') is provided to be smaller than the length (L1) of the insertion portion 351. You can. The second hole 140 extends from the first hole 130 in a third direction (C-C') perpendicular to the first direction (A-A') and the second direction (B-B'). can be extended towards. The maximum length L4 extending from the first hole 130 to the second hole 140 in the third direction (C-C') is the second direction (B- It may be provided smaller than the length (L1) for B'). According to the present disclosure, the worm shaft 350 can be prevented from being easily separated from the worm 300 after the worm shaft 350 is inserted into the worm 300.

According to the spirit of the present disclosure, accessibility of the height adjustment device can be improved.

According to the spirit of the present disclosure, the height adjustment device can be easily coupled to the home appliance, so the convenience of installation can be improved.

According to the spirit of the present disclosure, the worm shaft can be separated from the height adjustment device, thereby improving aesthetics.

According to the spirit of the present disclosure, the worm shaft can be separated from the height adjustment device, thereby reducing manufacturing costs.

According to the spirit of the present disclosure, the worm shaft can be detached from the height adjustment device in various directions, so accessibility can be improved.

According to the spirit of the present disclosure, the worm shaft can be prevented from being easily separated from the worm wheel, thereby improving user convenience.

According to the spirit of the present disclosure, the leg can be easily coupled to the worm wheel, so user convenience can be improved.

According to the spirit of the present disclosure, damage to the height adjustment device can be prevented.

According to the spirit of the present disclosure, the installation utilization of the height adjustment device can be increased.

The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

In the above, specific embodiments are shown and described. However, it is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

11 Trauma
15 coupling hole
100 height adjustment device
110 housing
114 Combined protrusion
120 Locking part
130 Hall 1
140 2nd hole

Claims (20)

main body (10); and
It includes a height adjustment device 100 that adjusts the height of the main body 10 from the ground,
The height adjustment device 100,
A housing 110 that can be coupled to the lower part of the main body 10;
A leg 400 disposed to penetrate the housing 110 and having a male thread portion 402 formed on the outer peripheral surface;
A worm wheel ( 200);
a worm 300 engaged with the worm wheel 200 to rotate the worm wheel 200; and
A worm shaft 350 is provided to rotate the worm 300 and is separable from the worm 300,
The housing 110 is a home appliance including a locking portion 120 provided to prevent the worm shaft 350 coupled to the worm 300 from being separated from the outside of the housing 110. According to claim 1,
The locking unit 120,
A first hole 130 provided to allow the worm shaft 350 to enter and exit the housing 110; and
A home appliance including a second hole 140 extending from the first hole 130 and guiding the moving position of the worm shaft 350 so that the worm shaft 350 is coupled to the worm 300. . According to clause 2,
The worm shaft 350 includes an insertion portion 351 coupled to the worm 300, and the insertion portion 351 extends in a first direction (A-A') along which the rotation axis of the worm shaft 350 extends. ) extends in a second direction (B-B') perpendicular to
With respect to the second direction (B-B'), the length (L2) of the first hole 130 is equal to or greater than the length (L1) of the insertion portion 351,
A home appliance in which the length (L3) of the second hole (140) in the second direction (B-B') is provided to be smaller than the length (L1) of the insertion portion (351). According to clause 3,
The second hole 140 extends from the first hole 130 in a third direction (C-C') perpendicular to the first direction (A-A') and the second direction (B-B'). Home appliances that extend towards. According to clause 4,
The maximum length L4 extending from the first hole 130 to the second hole 140 in the third direction (C-C') is the second direction (B- A home appliance that is provided smaller than the length (L1) for B'). According to clause 4,
The worm 300 includes a wormhole 303 into which the insertion portion 351 of the worm shaft 350 is coupled,
With respect to the second direction (B-B') and the third direction (C-C'), the center (F) of the wormhole 303 is the second distance from the center (D) of the first hole 130. 2 Home appliances arranged to face the center (E) of the hole (140). According to clause 6,
The wormhole 303 includes a first wormhole 303a formed at one end of the worm 300 and a second wormhole 303b formed at the other end located opposite to the one end of the worm 300,
The locking part 120 is formed on a first locking part 120a formed on one end of the housing 110 facing the first wormhole 303a and on the other end located opposite to the one end of the housing 110. A home appliance including a second locking portion (120b). According to clause 6,
The insertion portion 351 of the worm shaft 350 includes an insertion plate 352 having a rectangular shape,
The wormhole 303 is a home appliance including a first groove 304 corresponding to the shape of the insertion plate 352 and a second groove 305 provided to be perpendicular to the first groove 304. According to clause 3,
The worm shaft 350 further includes a rib portion 355 that extends from the insertion portion 351 along the first direction (A-A') and has a cylindrical shape,
The second hole 140 is a home appliance including a curve 141 corresponding to the shape of the rib portion 355. According to clause 2,
The housing 110 is a home appliance including an upper housing 111 that can be coupled to the main body 10 and a lower housing 112 that can be coupled to the upper housing 111. According to claim 10,
The first hole 130 is provided in the upper housing 111,
The second hole 140 is a home appliance provided in the lower housing (112). According to claim 10,
The upper housing 111 includes a coupling protrusion 114 protruding toward the main body 10,
The main body 10 is a home appliance including a coupling hole 15 into which the coupling protrusion 114 is coupled. According to claim 12,
The coupling hole 15 is a home appliance that extends along the circumferential direction. According to claim 1,
The leg 400 is a home appliance that further includes a head portion 403 that protrudes from the male thread portion 402 toward the main body 10. According to claim 14,
The head portion 403 is a home appliance including an inclined surface 404 that slopes upward toward the main body 10 as it approaches the center of the circle. housing (110);
A leg 400 penetrating the housing 110;
A worm wheel 200 disposed inside the housing 110 and coupled to the leg 400 so as to be raised and lowered by the leg 400;
a worm 300 engaged with the worm wheel 200 to rotate the worm wheel 200;
a worm shaft 350 that is provided to rotate the worm 300 and is separable from the worm 300; and
The worm shaft 350 is inserted into the housing 110 and guides it to be coupled to the worm 300, and the worm shaft 350 coupled to the worm 300 is pulled out of the housing 110. A height adjusting device including a locking portion 120 provided to prevent this from happening. According to claim 16,
The locking unit 120,
a first hole 130 provided to allow the worm shaft 350 to enter and exit the housing; and
Height adjustment comprising a second hole 140 extending from the first hole 130 and guiding the moving position of the worm shaft 350 so that the worm shaft 350 is coupled to the worm 300. Device. According to claim 17,
The worm shaft 350 includes an insertion portion 351 coupled to the worm 300, and the insertion portion 351 extends in a first direction (A-A') along which the rotation axis of the worm shaft 350 extends. ) extends in a second direction (B-B') perpendicular to
With respect to the second direction (B-B'), the length (L2) of the first hole 130 is equal to or greater than the length (L1) of the insertion portion 351,
A height adjustment device in which the length (L3) of the second hole (140) is smaller than the length (L1) of the insertion portion (351) in the second direction (B-B'). According to clause 18,
The second hole 140 extends from the first hole 130 in a third direction (C-C') perpendicular to the first direction (A-A') and the second direction (B-B'). Height adjustment device extending towards. According to clause 19,
The maximum length L4 extending from the first hole 130 to the second hole 140 in the third direction (C-C') is the second direction (B- A height adjustment device provided that is smaller than the length (L1) for B').

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