KR102000073B1 - Height adjustment device for furniture - Google Patents

Abstract

The present invention relates to a height adjusting support device for furniture. The height adjusting support device for furniture is to control the height of furniture on a bottom surface and prevent a secondary accident by stably offsetting a vibration load applied from the outside in a natural disaster such as an earthquake and preventing collapse. The height adjusting support device for furniture comprises: an upper body including a nut pipe vertically arranged at the center and fixed to the bottom of furniture; a rotation body rotating a spiral rod when rotating, wherein the rotation body includes the spiral rod screwed to the nut pipe at the center; and a lower body coupled to the lower part of the rotation body to idle and supporting the bottom as the bottom comes into contact with the floor surface. An upper end of the nut pipe is fixed by being exposed while penetrating the floor surface of the furniture. A winding groove is formed on the upper surface of the spiral rod and rotates a winding device by winding the spiral rod by the winding device having a winding protrusion at a longitudinal end in the upper part. The upper surface of the lower body protrudes to the upper part and is formed in the shape curved in an arc shape. An arc-shaped guide groove is formed on the bottom of the rotation body and comes into contact with the upper surface of the lower body to be joined. A guide hole is vertically penetrated at the center of the lower body and protrudes to the lower side of the rotation body. A connection bolt connecting the lower body and the rotation body penetrates the guide hole and is coupled to the guide hole. A lower inner diameter of the guide hole has a size smaller than the outer diameter of the screw head of the connection bolt.

Description

Height adjustment device for furniture [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting device for supporting a floor against a floor by being coupled to a bottom surface of a furniture, and more particularly, The present invention relates to a height control adjustable device for a furniture, which can prevent the second gear from being stuck or collapsed by stably canceling the applied vibration load.

Generally,

Generally, furniture such as a bed, a sofa, a desk, a chair, a cabinet and the like is provided with a supporting device for supporting them on the floor surface at the bottom corner.

Such a furniture supporting apparatus usually comprises a cylindrical body, a support plate fixed to the upper end of the body and the bottom of the furniture, and a support member fastened to the lower end of the body.

On the other hand, in order to prevent the furniture from falling and twisting when the floor of the place to be laid is not flat or horizontal, it is also possible to use furniture legs or vertical Height adjustment means for adjusting the horizontal and height of the frame or the support frame is provided.

Conventionally, the height adjustment means for the furniture height adjusts the height of the furniture so that the structure such as the door formed on the furniture can operate correctly to increase the service life and ease of use. And a bolt portion provided with a nut portion and screwed to the nut portion to adjust the height of the furniture while adjusting a screw

In Korean Utility Model Application No. 20-2002-0030382 (name: furniture supporting device / November 10, 2002), as known in the art, a body having a substantially cylindrical shape and having a through hole formed therein; A fixing plate disposed at an upper end of the body and having a plurality of holes formed in the lower surface of the furniture along the outer surface thereof so as to be fixed to the lower surface of the furniture through a fixing screw and having a screw hole having a screw hole formed therein; A supporting base which is located at a lower end of the body and is in close contact with the bottom surface and has a through hole formed in the inner center surface; A fixing screw inserted into the through hole of the support plate and fixed to the screw hole formed in the guide plate of the fixation plate to integrally fix the body, the fixed plate, and the support plate; And a non-slip device provided on the lower surface of the support to block the body and the fixing plate integrally coupled with the fixing screw and the support from being moved from the floor surface.

In addition, in Korean Patent Application No. 10-2013-0051706 (name: supporting leg having a moving and fixing function / 201.05.08.08), as known in the art, it is attached to the lower surface of a household appliance or furniture, An inner body having a flange attached to a lower surface thereof and formed with threads on an outer periphery thereof; An outer body having threads formed on an inner circumferential surface thereof so as to be screwed on the outer periphery of the inner body and a lower end supported on the ground; And a rolling member coupled to the bottom surface of the inner body and operated in a rolling manner.

On the other hand, in Korean Patent Application No. 10-2017-0007283 (name: Height Adjustment Device for Furniture / 2017.01.16), as known in the art, there is a structure in which a predetermined depth is provided at the lower end in the inward direction, A frame having an insertion hole; A height adjusting holder to which one side is coupled into the insertion hole and the opening of the frame; A height adjusting cover having a fastening hole through which the frame is inserted, and an inner screw formed on the inner surface of the fastening hole is coupled to the height adjusting holder; And a pedestal coupled to a lower side of the height adjusting cover and being in contact with the floor surface.

However, the above-mentioned conventional furniture support devices have problems in that they are easily collapsed or collapsed due to external vibration applied at the time of a natural disaster such as an earthquake, and thus secondary safety is generated.

Accordingly, there has been proposed a bearing device for furniture which has an anti-vibration property and is not easily collapsed or collapsed due to external vibration applied thereto.

Korean Patent Application No. 10-2017-0156943 entitled " Height Adjustment Device for Furniture with Seismic Resistance Structure and Furniture Including the Same ", Nov. 23, 2017) A top fixing body having a first through hole formed in a vertical direction; A penetrating shaft having a polygonal tool insertion groove formed on an upper surface of the through hole and having a structure penetrating through the first through hole and being exposed to the inside of the furniture and being aligned with the through hole; An intermediate rotating body including a cylindrical receiving space having a bottom open; And a second penetrating member inserted into the accommodating space formed in the intermediate rotating body so as to be coupled to the intermediate rotating body and partially protruding to the lower portion of the intermediate rotating body to contact the ground instead of the intermediate rotating body, The upper end fixing member has an annular structure extending horizontally from the first through hole and is opened to the lower portion of the upper fixing member. And a through hole is formed in the through hole so as to be separated from the through hole by the engaging step after being inserted into the groove when the through hole is engaged with the first through hole, And a gap between the inner circumferential surface of the groove portion and the outer circumferential surface of the assembly portion is formed to allow the assembling portion to move in the horizontal direction, That has been described.

However, the above-described conventional furniture support apparatus has a problem that the seismic performance which stably compensates the vibration load externally applied is inferior.

That is, when the vibration load applied from the outside is applied, the supporting structure flows to the floor along with the furniture, failing to maintain a stable posture.

Korean Utility Model Application No. 20-2002-0030382 Korean Patent Application No. 10-2013-0051706 Korean Patent Application No. 10-2017-0007283 Korean Patent Application No. 10-2017-0156943

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a method of adjusting a height of furniture on a floor surface and a vibration load externally applied in a natural disaster such as an earthquake The present invention is to provide a height adjustable and adjustable apparatus for a furniture, which is capable of stably canceling and not collapsing or collapsing.

According to another aspect of the present invention, there is provided a height adjusting apparatus for furniture comprising: an upper body fixed to a bottom surface of a furniture and having a nut pipe vertically arranged at a center; A rotating body provided at the center thereof with a screw rod screwed to the nut tube and rotating the screw rod when rotating; And a lower body coupled to the lower portion of the rotating body so as to be able to idle and to support the bottom surface in contact with the floor surface, the apparatus comprising: The nut tube being fixed so that its top is exposed through the bottom plate of the furniture; Wherein a winding groove is formed on the upper surface of the screw rod so as to be wound up at an upper portion thereof through a winding mechanism provided with winding protrusions at a terminating end thereof so as to be rotated; The upper surface of the lower body protrudes upward and has a curved shape in an arc shape; An arc-shaped guide groove is formed in the bottom surface of the rotating body so as to be in contact with the upper surface of the lower body in the form of arc; The lower body has a guide hole which passes through the center of the lower body and engages with a coupling bolt protruding downward from the rotation body to bind the lower body and the rotary body, Has a size smaller than an outer diameter of the screw head of the coupling bolt; A flow hole is formed in the lower portion of the guide hole so as to penetrate up and down and has an outer diameter larger than that of the screw head of the binding bolt to secure a flow space when the binding bolt flows; The inner diameter of the guide hole is formed larger than the inner diameter of the lower portion to form a motion space in which the binding bolt is rotated when the rotary body rotates with respect to the lower body.

According to the present invention, the height of the upper body of the rotating body can be controlled by rotating the rotating body and rotating the screw rod by the winding tool to selectively adjust the height of the furniture on the floor surface .

In addition, the coupling of the rotating body with respect to the lower body is formed of a curved surface in the form of an arc, and in the course of a natural disaster such as an earthquake, The rotating body stably rotates and / or flows in relation to the body to stably cancel the vibration load, and the rotating body and the lower body are not separated in an endless manner, thereby ensuring stability.

In addition, since the binding bolt for binding the rotating body and the lower body together with the rotating body of the rotating body with respect to the lower body and / or the flowing body secures the moving space through the 'funnel-shaped' guide hole, As shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view illustrating a height adjustable support device for furniture according to an embodiment of the present invention; FIG.
Fig. 2 is a schematic cross-sectional exemplary view showing a height adjusting and supporting apparatus for furniture according to the present embodiment; Fig.
FIG. 3 and FIG. 4 are schematic cross-sectional exemplary views showing the use state of the height adjusting and supporting apparatus for furniture according to the present embodiment. FIG.
Fig. 5 is a schematic view showing another example of a lower body constituting a height adjusting and supporting apparatus for furniture according to the present embodiment; Fig.
Figs. 6 to 8 are schematic views showing another example of the rotating body constituting the height adjustable bed apparatus for furniture according to the present embodiment. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, a description will be made in detail of a height adjusting apparatus for furniture according to a preferred embodiment of the present invention.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

FIGS. 1 to 11 are views showing a height adjustable support device for a furniture according to an embodiment of the present invention. The height adjustable support device 1 according to the present embodiment is fixed to the bottom surface of the furniture 10 An upper body 2 provided with a nut tube 21 disposed at a center in the vertical direction; A rotating body 3 having a threaded rod 31 screwed into the nut tube 21 at the center and rotating the threaded rod 31 when rotating; And a lower body 4 coupled to the lower portion of the rotating body 3 so as to be able to idle and to support the bottom surface in contact with the bottom surface.

That is, when the upper body 2 is fixed to the bottom surface of the furniture 10 and the rotating body 3 is coupled to the upper portion of the lower body 4, The upper body 2 is arranged at an upper portion with respect to the lower body 4 by screws so that the furniture 10 is arranged with a height relative to the floor surface.

At this time, the height of the furniture 10 with respect to the bottom surface is adjusted by adjusting the threaded length of the threaded bar 31 with respect to the nut tube 21 through the rotation of the rotating body 3.

Accordingly, the horizontal balance of the furniture 10 is appropriately adjusted with respect to the state of the floor surface.

In the height adjustable bed apparatus 1 according to the present embodiment, the nut tube 21 is fixed so that its upper end is exposed through the bottom plate of the furniture 10; On the upper surface of the threaded rod 31, a winding groove 32 is formed, which is wound up at an upper portion thereof through a take-up mechanism 100 having a winding protrusion formed at its terminus and rotated.

That is, the threaded rod 31 can be rotated through the winding mechanism 100 at the upper part of the bottom surface of the furniture 10 (the inside of the furniture), so that the external environment rotates the rotating body 3 The height of the furniture 10 can be adjusted simply and stably even when the furniture 10 is placed in a difficult space.

The rotation of the rotating body 3 and the rotation of the threaded rod 31 by the winding tool 10 are selectively performed so that the rotation of the threaded rod 31 of the upper body 2 The height of the furniture 10 with respect to the floor surface can be easily adjusted by adjusting the height.

Therefore, the use efficiency is improved.

In the height adjusting and supporting device 1 for a furniture according to this embodiment, the upper surface of the lower body 4 protrudes upward and has a curved shape in an arc shape; An arc groove 33 is formed on the bottom surface of the rotary body 3 in such a manner as to be in contact with the upper surface of the lower body 4 in an arc- .

That is, the binding of the rotating body 3 with respect to the lower body 4 is formed as a curved surface having an arc shape; The rotating body 3 rotates and / or flows in a circular arc with respect to the lower body 4, which is supported on the floor surface, in the process of transmitting vibration loads externally applied to the furniture during a natural disaster such as an earthquake, Motion is performed to stably cancel the vibration load.

In the height adjustable bed apparatus 1 according to the embodiment of the present invention as described above, the lower body 4 is vertically penetrated through the center of the lower body 4 and protrudes downward of the rotating body 3, ) And a coupling bolt (5) for coupling the rotating body (3) are inserted and connected to each other; The lower inner diameter of the guide hole 41 is smaller than the outer diameter of the screw head of the coupling bolt 5.

That is, while the rotating body 3 is rotating and / or moving in a circular motion with respect to the lower body 4, the binding bolts 5 are bound to the guide holes 41, (3) and the lower body (4) are separated from each other without any interruption, thereby ensuring stability.

The lower end of the guide hole 41 is provided with a flow hole 42 which penetrates vertically and has an outer diameter larger than the screw head of the binding bolt 5 to secure a flow space when the binding bolt 5 flows. ) Is formed; The guide hole 41 is formed to have a larger inner diameter than an inner diameter of the lower portion so that a movement space in which the binding bolt 5 is rotated when the rotary body 3 rotates with respect to the lower body 4 Respectively.

3 and 4, the rotating body 3 and the lower body 4 are coupled with each other at the same time as the rotating body 3 rotates and / or flows on the lower body 4, The coupling bolt 5 secures the moving space through the guide hole 41 having the funnel shape and the flow hole 42, thereby performing the vibration canceling movement stably.

5, a 'hemispherical' contact protrusion 43 protruding upward is formed on the upper surface of the lower body 4 in the above-described height adjustment device 1 for a furniture according to the present embodiment. Can be arranged radially with a spacing centered about the center.

That is, when the rotating body 3 is rotated or / and flowed from the upper part of the lower body 4, the lower body 4 and the rotating body 3 are moved through the contact protrusions 43 As a result of the point contact, the frictional force is minimized to realize a stable pivoting motion and / or a flow motion of the rotating body 3.

6 to 8, the guide groove 33 is formed on the bottom surface of the rotating body 3, and the upper and lower Shaped body having a central hole 34 penetrating through the center hole 34. The threaded rod 31 is axially coupled to the center hole 34 so as to idle through it. On the inner circumferential surface on the upper side of the rotating body (3), ring gear teeth (35) are arranged; A plurality of planetary gears 36 gearing to the inside of the ring gear 35 may be fixed to the screw rod 41 such that the rotation plate 37 axially coupled to the ring gear 35 can rotate in the same direction .

That is, when the user rotates the rotating body 3 to rotate the ring gear 35, the planetary gears 36 geared with the ring gear 35 are rotated in the rotating body 3 To do an orbital movement; The rotating plate 37 and the screw rod 31 are rotated in accordance with the revolution of the planetary gears 36 so that the length of the screw connection with the nut tube 21 is adjusted.

Therefore, the height adjustment operation of the furniture can be stably realized.

The centers of the ring gear teeth 35 and the rotating plate 37 of the rotating body 3 are arranged in the same direction as the center axis of the screw rod 31, Direction is made on the same line.

Accordingly, a sophisticated height adjustment operation of the furniture 10 is realized, and the stability of the operation is ensured.

In this case, the planetary gears 36 are preferably composed of four sets each arranged at a right angle with respect to the screw rod 31; Accordingly, the rotary load applied to the rotary plate 37 is uniform, and the stability of the rotary operation is further secured structurally.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Supporting device 10: Furniture
100: winding mechanism 2: upper body
21: nut tube 3: rotating body
31: Nasa bar 32: Winding home
33: guide groove 34: center hole
35: ring gear 36: planetary gear
37: spindle 4: lower body
41: guide ball 42: floating ball
43: contact projection 5: binding bolt

Claims (1)

An upper body 2 fixed to a bottom surface of the furniture 10 and having a nut pipe 21 arranged at a center vertically; A rotating body 3 having a threaded rod 31 screwed into the nut tube 21 at the center and rotating the threaded rod 31 when rotating; And a lower body (4) coupled to the lower portion of the rotating body (3) such that the lower surface of the lower body (4) is held in contact with the floor surface.
The nut tube 21 is fixed so that an upper end thereof is exposed through the bottom plate of the furniture 10;
A winding groove 32 is formed on the upper surface of the threaded rod 31 so as to be wound and rotated in the upper portion through a winding mechanism 100 having winding protrusions formed at its terminus;
The upper surface of the lower body 4 protrudes upward and has a curved shape in an arc shape;
An arc groove 33 is formed on the bottom surface of the rotary body 3 in such a manner as to be in contact with the upper surface of the lower body 4 in an arc- Being;
A coupling bolt 5 penetrating in the vertical direction and projecting in a downward direction of the rotary body 3 and binding the lower body 4 and the rotary body 3 is provided at the center of the lower body 4 And a lower inner diameter of the guide hole (41) is smaller than an outer diameter of the screw head of the binding bolt (5);
A flow hole 42 is formed in the lower portion of the guide hole 41 and has an outer diameter larger than that of the screw head of the binding bolt 5 so as to secure a flow space when the binding bolt 5 flows. ;
The guide hole 41 is formed to have a larger inner diameter than an inner diameter of the lower portion so that a movement space in which the binding bolt 5 is rotated when the rotary body 3 rotates with respect to the lower body 4 (1) according to claim 1,
On the upper surface of the lower body 4,
Shaped contact protrusions (43) protruding upward are arranged radially with a spacing centering on the center of the contact protrusions (43).

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