KR102470000B1 - Mutual fastening structure of bridge pipe and lower support - Google Patents

Abstract

The present invention relates to furniture having a bridge pipe along with a chair or a table. More specifically, the present invention relates to furniture having a bridge pipe along with a chair or a table, comprising: a lower support having a screw shaft with a tilted support unit; and a fastening fixer radially having an extension slider. As the screw shaft of the lower support is coupled from a lower side of the fastening fixer inserted into the bridge pipe, the extension slider in the fastening fixer protrudes toward the bridge pipe at the same time. Therefore, as the lower support is fastened simply by a screw after inserting the fastening fixer into a lower end of the bridge pipe of a chair or a table or the like, the bridge pipe and the lower support can be rapidly and firmly fastened and fixed with each other, thereby providing very excellent workability and productivity. Therefore, a very high efficiency and economic feasibility can be provided. The extension slider providing a strong protruding holding force in a transversal direction is able to maintain the binding and fixing force between the bridge pipe and the lower support, which constantly receive a load and rotation or torsion, in a stable manner, thereby extending the life of use of not only the bridge pipe and the lower support but also the whole furniture. In addition, anyone can easily and rapidly assemble and fasten the structure, and if needed, can easily separate the lower support from the bridge pipe and reassemble afterward. Therefore, a very excellent efficiency in production, maintenance, and management of a variety of furniture including chairs and tables can be provided.

Description

Mutual fastening structure of bridge pipe and lower support for furniture using extension slider {Mutual fastening structure of bridge pipe and lower support}

The present invention relates to a furniture having a leg body such as a chair or a table, and more particularly, to achieve mutually strong and simple coupling between a lower support body such as a caster or a foot tube coupled to the lower end of a leg body for furniture and a leg body. Of course, by enabling easy disassembly and replacement of each other, overall assembly and productivity are improved, as well as maintaining mutually stable fastenings, while enabling efficient repair and maintenance of lower supports such as casters. Fastening between furniture leg bodies and lower supports It's about rescue.

Furniture such as general chairs, back chairs, or various tables is provided with a leg body to support and withstand the user's weight or the weight of items placed on the top plate, and casters are provided at the bottom of the leg body for convenient movement. The provided lower support body, lower support body having a height adjustment function, or lower support body of simple coupling in the form of a trigger to prevent noise or wear is coupled and fixed.

In this way, the various lower supports coupled to the lower end of the leg body not only increase the convenience of use for chairs and tables, but also make the lower support body detachable from the leg body, so that only the corresponding lower support body can be renewed in case of damage, wear or noise. By replacing, it is possible to increase the lifespan of furniture such as chairs and tables.

At this time, as for the coupling method of the lower support body to the leg tube as described above, it is common to adopt a structure by forced press-fitting or screw coupling, but various structural changes have been made in the near future for the purpose of improving assembly quality and securing a solid fastening force. It is a trend that is being tried.

For example, in the case of Utility Model Registration No. 20-0305014, in a support body that can be used by inserting and fixing wheels on a support pipe, it is fitted and fixed to the lower end of the support pipe, a protruding jaw is formed on the outer periphery of the lower end, and an insertion hole is formed in the center. A fixture, a bottom plate inserted into the insertion hole of the fixture, a protruding jaw corresponding to the protruding jaw of the fixture is formed on the outer periphery, and a through hole is formed in the center, and welded to the upper and lower portions of the through hole of the bottom plate, respectively. A pair of fastening nuts that are fixed and have threads for fastening the fixing bolts of the upper part of the wheel in the center, and a stainless steel fixing cover that is press-fixed by covering the protruding jaw formed on the outer periphery of the lower end of the fixture and the protruding jaw of the bottom plate A support body coupling structure for wheels composed of has been registered.

In addition, in the case of Utility Model Registration No. 20-0252821, it relates to a height control foot device in which a bolt-type wheel is fastened to the lower part, and a female screw part is formed on the inner side, and an intermediate coupling that is fitted into the lower part of the hollow leg fixed to the bottom of the seat part. and a height adjustment foot having a male screw portion formed on the outside so as to be able to move up and down along the helix of the female screw portion, and the height adjustment foot is a wheel to which a nut is fixed to the inside so that a bolt-type wheel can be fastened thereto. A height adjustable foot device for coupling has been registered.

Subsequently, in the case of Registered Utility Model No. 20-0207737, in order to minimize the number of parts of the caster fixture and simplify the manufacturing process to increase product productivity, a tap hole is formed in the inner center and a nut portion provided with a plurality of grooves on the outer surface A caster fixture composed of a casing surrounding the outer surface of the nut and having a plurality of inner bending protrusions formed at positions corresponding to the grooves on the side surface has been registered.

In addition, in the case of Utility Model Registration No. 20-0401186, a fastening screw is integrally installed upright on the upper part of the wheel housing composed of moving wheels, and a through hole for fastening is formed on the bottom surface of the pole so that the fastening screw can be inserted, and the fastening screw is fixed by a fastening nut in the pole, but an insertion groove is formed along the periphery of the fastening screw on the upper part of the wheel housing, and the insertion hole protrudes along the periphery of the through hole for fastening so that it can be inserted into the insertion groove on the lower bottom of the pole The formed wheel fastening structure has been registered.

However, the existing coupling structure between the leg body and the lower support body or the caster is due to damage of the lower support body itself or damage at the mutual coupling part as the lower support body coupled to the leg body weakens over time. It has the disadvantage of having to repeatedly replace the lower support body or making it impossible to use the entire furniture such as a chair due to damage to the leg body.

In other words, most of the existing leg tubes and lower supports are in a method of inserting and fixing the screw shaft protruding upward from the tip of the lower support body into the leg body, and in the case of lower supports such as casters, in the process of repeatedly using a chair or table, The screw shaft at the tip of the support body receives a rotational force in the opposite direction and loosens from the leg body. As a result, when the coupling force between the leg body and the lower support body is weakened, the lower support body is the user's weight or the chair or table itself. While not stably supporting the weight of the joint, damage occurs at the mutual coupling part.

Therefore, the weakened or lost bonding force between the leg body and the lower support quickly destroys the lower support and at the same time leads to the destruction of the interconnection part in the leg body, resulting in uneconomical consequences due to frequent replacement of the lower support body and damage to the threaded part in the leg body. In the case of a chair or table made of a leg tube that cannot be replaced or repaired, it is extremely inefficient because it reaches a state in which the entire chair or table cannot be used.

In particular, as is well known, the coupling structure between the existing bridge body and the lower support body is made of a mutual screw coupling method, and in order to realize such a coupling structure, it is necessary to form screws in the leg body or nuts by welding. In order to combine the lower supports, the manufacturing and production efficiency is reduced due to the preliminary work process on the leg body, and the production cost for the entire furniture is reduced as defects in the leg body itself occur during the preliminary work process for the leg body. It is currently acting as a cause for the rise.

Republic of Korea Registered Utility 20-0305014 (2003.02.07. Registration) Republic of Korea Registered Utility 20-0252821 (2001.10.22. Registration) Republic of Korea Registered Utility 20-0207737 (2000.10.11. Registration) Republic of Korea Registered Utility 20-0401186 (2005.11.07. Registration)

The present invention has improved the problems as described above, and has a lower support body having a screw shaft with an inclined support portion and a fastening fixture having a radially extending slider, and the lower side of the fastening fixture inserted into the inner side of the leg body. As the screw shaft of the lower support is coupled from, the extension slider in the fastening fixture is configured to protrude toward the leg body at the same time,

A simple rotational assembly of the lower support enables quick and solid fastening and fixation of the lower support to the leg, and the extension sliders protruding in all directions can stably maintain the solid fixation between the leg and lower support, which are continuously subjected to load and rotational force. It is an object of the present invention to provide a mutually fastening structure between a furniture leg body and a lower support body using an extension slider that enables rapid separation and reassembly of the lower support body from the leg body.

The present invention for achieving the above object is a furniture leg tube body; A lower support body having a screw shaft having an inclination support portion at the lower end thereof; A fastening fixture in which expansion sliders are inserted in all directions; Each is provided so that the fastening fixture is inserted into the lower end of the leg tube body, and the screw shaft of the lower support body is inserted and fixed from the lower side of the fastening fixture,

As the screw shaft of the lower support is screwed with the fastening fixture, the inclined support of the screw shaft interferes with the inner end of the extension slider and protrudes the extension slider outward, so that the outer end of the extension slider is pressurized and held on the inner surface of the leg body. And it will be configured so that the coupling and fixing of the lower support body and the fastening fixture are made at the same time.

The present invention, after inserting the fastening fixture at the bottom of the leg body of a chair or table, etc., fast and solid fastening and fixation between the leg body and the lower support body can be achieved by simply screwing the lower support body, which is very efficient due to excellent workability and productivity At the same time, the extension slider, which is economical and provides strong protrusion holding force in the lateral direction, can stably maintain the binding fixing force between the leg body and the lower support body under continuous load and rotation or twisting, so that the leg body and the lower support body as well as the furniture It can extend the service life of the whole, and anyone can easily and quickly assemble and fasten it, and if necessary, the lower support can be easily separated and reassembled from the leg body to produce and maintain various types of furniture including chairs and tables. and management efficiency are very good.

1 is an overall exploded perspective view showing an interlocking structure according to the present invention
Figure 2 is an exploded perspective view according to the type of lower support in the mutual fastening structure according to the present invention
Figure 3 is a cross-sectional view showing the entire coupling structure according to the present invention
Figure 4 is a cross-sectional enlarged view of the fastening fixture in the mutual fastening structure according to the present invention
5 is an overall separated cross-sectional view showing an interlocking structure according to the present invention
Figure 6 is a separated cross-sectional view showing a coupling state between the fastening fixture and the lower support in the mutual fastening structure according to the present invention
Figure 7 is a coupling cross-sectional action showing the fastening state between the fastening fixture and the lower support in the mutual fastening structure according to the present invention
Figure 8 is an exemplary cross-sectional view of the inclined support of the lower support in the mutual fastening structure according to the present invention
Figure 9 is a cross-sectional overall coupling showing another embodiment of the fastening fixture in the mutual fastening structure according to the present invention
Figure 10 is a separate cross-sectional view of the fastening fixture in another embodiment according to Figure 9

Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention may make various changes and may have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.

In addition, when a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in the middle. It should be understood that there is On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Then, terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In addition, terms such as "...unit", "...unit", and "...module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing the entire mutual fastening structure according to the present invention, Figure 2 is an exploded perspective view according to the type of lower support in the mutual fastening structure according to the present invention, Figure 3 is the mutual fastening structure according to the present invention 4 is an enlarged cross-sectional view of the fastening fixture in the mutually fastening structure according to the present invention.

As shown in the figure, the mutual fastening structure between the furniture leg body 100 and the lower support body 200 in the form of a caster or foot according to the present invention includes the furniture leg body 100; a lower support 200 having a screw shaft 220 having an inclined support 210 at the lower end thereof; It is composed of a fastening fixture 300 in which extension sliders 310 and 310' are inserted in all directions, and the above furniture leg tube 100 is composed of a circular or square pipe to support the support angles of various chairs or tables. It will play the role of a support angle, etc.

In addition, the lower support 200 is made of casters so that a chair or table can be conveniently and easily moved, or is made of a synthetic resin material having a predetermined height to act as a foot for a table or storage furniture. The fastening fixture 300 serves to firmly bind and fix the leg tube body 100 and the lower support body 200 to each other, and the fastening fixture 300 to the lower inner side of the leg tube body 100 for various furniture In the state where is inserted, the screw shaft 220 protruding from the lower side of the fastening fixture 300 to the front end of the lower support 200 is inserted and combined, so that the leg tube 100 and the lower support 200 are fastened. The body 300 will be able to be fast and strongly coupled and fixed to each other.

That is, in the process of screwing the screw shaft 220 of the lower support 200 as described above with the fastening fixture 300, the inclined support 210 provided on the screw shaft 220 of the lower support 200. ) interferes with the inner ends of the extension sliders 310 and 310' inserted into the fastening fixture 300 in the transverse direction, and the inclined support 210 protrudes the extension sliders 310 and 310' outward. And, the outer ends of the extended sliders 310 and 310' protruding outward are pressurized and held in strong contact with the inner surface of the leg body 100, so that the leg body 100 and the lower support body 200 and the fastening fixture Coupling and fixing of 300 can be performed simultaneously and quickly.

Here, the lower support 200 described above is a caster type widely used for chairs or movable tables, and a caster type widely used for fixed chairs, fixed tables, or various storage cabinets. In the case of ), it is composed of a wheel body 201 equipped with a caster 202 and a screw shaft 220 located at the front end of the wheel body 201.

In addition, the hexagonal rotation sphere 221 is formed on the lower side of the screw shaft 220, and the inclined support portion 210 having the inclined surface 211 of the lower beam on the outside is formed on the upper side of the hexagonal rotation sphere 221, the screw shaft ( 220), the screw shaft 220 is to be firmly screwed to the fastening fixture 300, and the hexagonal rotation sphere 221 connects the lower support body 200 to the fastening fixture ( 300), it is formed with the purpose of strongly rotating the lower support 200 using a tool such as a spanner to mutually engage, and the inclined support 210 having an inclined surface 211 is screwed together. As the inclined surface 211 of the ascending inclined support 210 interferes with the inner end of the extension slider 310, 310', the radially arranged extension slider 310, 310' naturally protrudes outward. Will do.

On the other hand, the lower support 200 in the form of a trigger consists of a trigger body 203 having a screw shaft 220 located at the tip, and a metal bolt on the upper side of the trigger body 203 injection-molded by synthetic resin. By insert molding the screw shaft 220, it will be possible to increase the bonding force between each other, and the hexagonal rotation sphere 221 is formed on the lower side of the screw shaft 220, and the upper side of the hexagonal rotation sphere 221 has a lower mineral deposit on the outside. The inclined support part 210 having a narrow inclined surface 211 is formed integrally with the screw shaft 220, and the hexagonal rotation sphere 221 for strongly rotating the lower support body 200, which is also in the form of a trigger, The inclined support part 210 having an inclined surface 211 causing interference with the extended sliders 310 and 310' and allowing the extended sliders 310 and 310' to protrude radially outward at the same time is configured together.

Subsequently, the fastening fixture 300, which is inserted into the lower end of the leg tube body 100 and induces a strong fastening force with the leg tube body 100 by coupling the lower support body 200, is inserted into the lower end of the leg tube body 100. It is composed of a fitting body 301 and an engaging flange 302 formed at the lower end of the fitting body 301 so that the lower end of the leg tube body 100 is held, in the center of the fitting body 301 on the upper side. The fastening screw hole 303 located and the insertion groove 304 located on the lower side are formed.

Here, the insertion groove 304 includes the screw shaft 220 of the lower support 200 so that the inclined support 210 is inserted from the lower side to the inside, and the fastening screw hole 303 is the insertion groove 304 The screw shaft 220 inserted into the inside is screwed to each other, and as the fastening screw hole 303 and the screw shaft 220 are screwed together, the inclined surface 211 formed on the inclined support part 210 gradually rises and is inserted. Interference with the inner end of the extended slider 310 (310') protruding to the inside of the groove portion 304 causes the extended slider 310 (310') to protrude outward.

At this time, the fastening screw hole 303 may be formed by through-molding a screw hole directly in the fitting body 301, and is fastened by insert molding in which a separately provided nut body is inserted during the molding process of the fitting body 301. It may be configured so that the screw hole 303 is formed.

In addition, in the transverse direction of the fitting body 301, assembly holes 305 and 305' into which the aforementioned expansion sliders 310 and 310' are inserted are radially formed, and the assembly holes 305 and 305' The inner end of the extension slider 310 (310') inserted into the inclined support portion 210 and the corresponding inclined end portion 311 are formed, so that the extension slider 310 (310') with an outward protruding action is formed on an inclined surface. The support part 210 and the inclined end part 311 slip each other more smoothly, and as the inclined support part 210 rises, the extension sliders 310 and 310' are constant along the assembly holes 305 and 305'. It will be able to stably protrude outward.

In particular, a guide protrusion 306 is formed on the inner upper side of the assembly holes 305 and 305' formed in the fitting body 301 described above, and the expansion sliders 310 and 310 inserted into the assembly holes 305 and 305'. '), by forming a guide groove 312 into which the outwardly open guide protrusion 306 is inserted, the extension sliders 310 and 310' guide the guide groove 312 and the guide protrusion 306 mutually. As a result of this action, not only the straightness is further improved, but also the extension slider 310, 310' can be suppressed from flowing within the assembly hole 305, 305', so that a strong and solid fastening force can be maintained with a more stable indentation and disengagement action. there will be

Therefore, as shown in FIGS. 5 and 6, the fitting body 301 of the fastening fixture 300 is inserted in advance to the lower end of the leg tube body 100, but the fastening fixture 300 is removed from the leg tube body 100. After making the interference fit in a tight state to prevent arbitrary separation, insert the screw shaft 220 and the inclined support part 210 of the lower support 200 from the lower side of the fastening fixture 300 to The screw shaft 220 can be screwed into the fastening screw hole 303 of the fastening fixture 300.

In addition, when the hexagonal rotary sphere 221 formed on the screw shaft 220 of the lower support 200 is strongly rotated using a tool or the like, the inclined support 210 of the lower support 200 rises by screwing and at the same time The extension slider 310, 310' of the fastening fixture 300 will be pushed outward, and the outer end of the extension slider 310, 310', which protrudes outward in all directions, is strongly attached to the inner surface of the leg body 100. As shown in FIG. 7, the leg tube body 100, the lower support body 200, and the fastening fixture 300 can be quickly and strongly fastened and fixed at once while being pressurized and held by force.

Conversely, when the lower support 200 needs to be separated or replaced from the leg tube 100 due to damage to the lower support 200 or various causes and purposes, the hexagonal rotation formed on the screw shaft 220 of the lower support 200 By biting the sphere 221 with a tool and rotating it in the reverse direction, the lower support 200 is separated downward from the fastening fixture 300 by the reverse rotation of the screw shaft 220, and the lower support 200 As it descends, the inclined support part 210 pushing the extension slider 310 (310') also descends, and the extension slider 310 (310'), which has the strong outward protruding force, obtains an inward flow space. In the end, the coupling force of the leg tube body 100 and the fastening fixture 300 is weakened and lost, so that the separation between them can be made very quickly and easily.

Subsequently, in the case of the inclined support part 210 formed on the screw shaft 220 of the lower support body 200, the inclined support part 210 having the inclined surface 211 is formed in the process of processing the screw shaft 220 as described above. It may be configured to be integrally formed with the 220, and as shown in FIG. 8, a separate inclined support portion 210 having an inclined surface 211 of the upper beam on the outside and a fitting hole 212 in the center is screwed. It can also be configured to be inserted into the shaft 220, and in this case, the advantage of being able to utilize the existing lower support body having only the screw shaft as it is will be produced.

In addition, even in the case of the fastening fixture 300, as shown in FIGS. 9 and 10, the fastening screw hole 303 is configured to be formed in the binding plate 320 separately divided from the fitting body 301, and the binding plate 320 is configured to be individually fixed to the inner side of the lower end of the leg tube body 100, so that the fitting body 301 is inserted into the lower side of the binding plate 320 in the leg tube body 100, and the bottom support body 200 The screw shaft 220 may be configured to pass through the fitting body 301 and be coupled to the fastening screw hole 303 of the binding plate 320.

In this way, when the binding plate 320 having the fastening screw hole 303 is fixed to the inside of the lower end of the leg pipe 100 in advance, the binding plate 320 is made of a strong metal plate and the metal leg pipe 100 and It can be strongly fixed through welding, and due to the lower support 200 screwed to the binding plate 320 having a strong bearing capacity, compared to a structure that is fastened and fixed depending on the extension sliders 310 and 310' As the tube body 100, the lower support 200, and the fastening fixture 300 have a double fastening fixing force, they will be able to continuously maintain a stronger and more stable combined state.

Therefore, the fastening structure between the leg body and the lower support body of the present invention can quickly and firmly assemble the lower support body 200 made of casters or feet to the leg body 100 in furniture having the leg body 100 such as a chair or table. If necessary, the lower support can be easily and quickly separated and reassembled from the leg tube, which not only improves the production and manufacturing efficiency of various types of furniture such as chairs or tables, but also greatly extends their lifespan. You will be able to.

The embodiments described in this specification and the configurations shown in the drawings as described above are merely the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, so various equivalents and modifications that can replace them It should be understood that there may be examples.

100: leg tube
200: lower support 201: wheel body
202: caster 203: foot body
210: inclined support 211: inclined surface
212: fitting hole
220: screw shaft 221: hexagonal rotation sphere
300: fastening fixture 301: fitting body
302: locking flange 303: fastening screw hole
304: insertion groove 305,305': assembly worker
306: guide protrusion
310,310': extended slider 311: inclined end
312: guide groove
320: binding plate

Claims (8)

a leg tube for furniture (100); a lower support 200 having a screw shaft 220 having an inclined support 210 at the lower end thereof; The fastening fixture 300 in which the expansion sliders 310 and 310' are inserted in all directions; Each is provided so that the fastening fixture 300 is inserted into the lower end of the leg tube body 100, and the screw shaft 220 of the lower support body 200 is inserted and fixed from the lower side of the fastening fixture 300, ,
As the screw shaft 220 of the lower support 200 is screwed into the fastening fixture 300, the inclined support 210 of the screw shaft 220 interferes with the inner end of the extension slider 310 (310') and expands. The outer end of the extension slider 310 (310') is pressurized and held on the inner surface of the leg body 100 by protruding the slider 310 (310') outward, thereby maintaining the leg body 100 and the lower support body 200. A mutually fastening structure of a furniture leg body and a lower support body using an extension slider, characterized in that the fastening fixture 300 is configured to be coupled and fixed at the same time.
According to claim 1,
The lower support body 200 is composed of a wheel body 201 equipped with casters 202 and a screw shaft 220 located at the front end of the wheel body 201,
A hexagonal rotation sphere 221 is formed on the lower side of the screw shaft 220, and an inclined support portion 210 having an inclined surface 211 of the lower beam upper side is formed on the upper side of the hexagonal rotation sphere 221 on the outside of the screw shaft 220 Mutual fastening structure of the furniture leg tube and the lower support using an extension slider, characterized in that it is formed integrally with.
According to claim 1,
The lower support body 200 is composed of a wheel body 201 equipped with casters 202 and a screw shaft 220 located at the front end of the wheel body 201,
A hexagonal rotary sphere 221 is formed on the lower side of the screw shaft 220, and an inclined support portion having an inclined surface 211 of the lower beam upper side on the upper side of the hexagonal rotary sphere 221 and a fitting hole 212 in the center thereof. (210) is formed by inserting into the screw shaft (220).
According to claim 1,
The lower support body 200 is composed of a trigger body 203 having a screw shaft 220 located at the tip,
A hexagonal rotary sphere 221 is formed on the lower side of the screw shaft 220, and an inclined support part 210 having an inclined surface 211 of the lower beam upper side is formed on the upper side of the hexagonal rotary sphere 221 on the outside of the screw shaft 220 Mutual fastening structure of the furniture leg tube and the lower support using an extension slider, characterized in that it is formed integrally with.
According to claim 1,
The lower support body 200 is composed of a trigger body 203 having a screw shaft 220 located at the tip,
A hexagonal rotary sphere 221 is formed on the lower side of the screw shaft 220, and an inclined support portion having an inclined surface 211 of the lower beam upper side on the outside and a fitting hole 212 in the center on the upper side of the hexagonal rotary sphere 221. (210) is formed by inserting into the screw shaft (220).
According to claim 1,
The fastening fixture 300 is formed on the lower end of the fitting body 301 inserted into the lower end of the leg tube body 100 and the fitting body 301, so that the lower end of the leg tube body 100 is engaged. ), but composed of
In the center of the fitting body 301, a fastening screw hole 303 located on the upper side and an insertion groove 304 located on the lower side are formed, and in the transverse direction of the fitting body 301, the aforementioned extension slider 310 The assembling holes 305 and 305' into which the 310' is inserted are radially formed, and the inner ends of the extension sliders 310 and 310' inserted into the assembling holes 305 and 305' are inclined support parts ( 210) and the corresponding inclined end portion 311 are formed, characterized in that the mutual fastening structure of the furniture leg tube and the lower support body using the extension slider.
According to claim 6,
A guide protrusion 306 is formed on the inner upper side of the assembly holes 305 and 305' formed in the fitting body 301, and the upper surface of the expansion slider 310 and 310' inserted into the assembly holes 305 and 305'. A mutual fastening structure between a furniture leg body and a lower support body using an extension slider, characterized in that it is configured by forming a guide groove 312 into which the guide protrusion 306 is inserted.
According to claim 6,
The fastening screw hole 303 of the fastening fixture 300 is configured to be formed in the binding plate 320 separately divided from the fitting body 301, and the binding plate 320 is inside the lower end of the leg tube body 100 By configuring to be individually fixed, the fitting body 301 is inserted into the lower side of the binding plate 320 in the leg tube body 100, and the screw shaft 220 of the lower support body 200 penetrates the fitting body 301 The mutual fastening structure of the furniture leg tube and the lower support body using an extension slider, characterized in that it is configured to be coupled to the fastening screw hole 303 of the binding plate 320.

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