KR101733870B1 - Screw type fastening apparatus and, height adjusting chair comprising the same - Google Patents

Screw type fastening apparatus and, height adjusting chair comprising the same Download PDF

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Publication number
KR101733870B1
KR101733870B1 KR1020150100425A KR20150100425A KR101733870B1 KR 101733870 B1 KR101733870 B1 KR 101733870B1 KR 1020150100425 A KR1020150100425 A KR 1020150100425A KR 20150100425 A KR20150100425 A KR 20150100425A KR 101733870 B1 KR101733870 B1 KR 101733870B1
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KR
South Korea
Prior art keywords
spiral
ring portion
screw
tubular
longitudinal direction
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KR1020150100425A
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Korean (ko)
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KR20170009053A (en
Inventor
권순신
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벨로스주식회사
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/34—Chairs or stools with vertically-adjustable seats with pins coacting with holes or bolt-and-nut adjustment
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/10—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

According to the present invention, there is provided a screw type fastening apparatus for fastening a first member (10) and a second member (20) to each other. The screw type fastening apparatus is formed into a tubular shape and has one side mounted on the first member (10) (110) having a hollow (111) penetrating in the direction of the arrow. And the body 124 is extended in a spiral manner so as to be bent in a helical shape along the longitudinal direction and is formed in the longitudinal direction A first spiral ring part 120 provided with a fastening hole 122 penetrating through the first spiral ring part 122; And a screw part (130) formed in a bar shape extending in a predetermined length and having one side mounted on the second member (20) and a male thread (131) extending along the longitudinal direction, the screw part The first member 130 and the second member 130 are coupled to the first spiral ring portion 120 while being inserted into the coupling hole 122 so that the male thread 131 and the support space portion 121 are engaged with each other, And the second member (20) are fastened to each other.

Description

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw type fastening device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw type fastening device and a height adjusting chair including the screw type fastening device and more particularly to a screw type fastening device for fastening a first member and a second member, The height of the seat portion can be adjusted using the height adjusting chair.

Fig. 1 shows the structure of a fastening unit having a conventional bolt and nut structure. Referring to FIG. 1, generally, a plurality of fastening members are fastened to each other by a bolt 150 having a male thread 160 formed on an outer circumference thereof, and a nut 100 having an annular shape formed on an inner circumferential surface of the bolt 150 ). In addition to the bolts 150 and the nuts 100, in addition to the bolts 150 and the nuts 100, in order to interconnect the two members to be fastened in daily life or in the industrial field as in the pipe coupling structure using a skein and a nipple, Which is a coupling force between the two.

In the case of the fastening structure using the male thread and the female thread, the coupling area is widened and the fastening force is increased as the combined length of each thread becomes longer.

Further, in the case of a member in which a male thread is formed, a tip having a V shape is arranged around the outer circumferential surface, while the member is rotated while relatively moving to form a helical male thread along the circumference. In the case of a member having a female screw, And the member was rotated while relatively moving, so that a spiral female thread was formed along the inner circumferential surface.

In the case of the male screw thread, there is no restriction on the machining of the surface with the required thread length because the outer surface is machined. However, in the case of the male screw thread, machining is performed inside the hollow thread, The fixation of the tip to the hollow inner position was limited and it was not possible to process the female thread exceeding the proper length. In other words, there is a problem that the fastening length between the male thread and the female thread is restricted.

Japanese Unexamined Patent Application Publication No. 10-2015-0002059 (May 2015.01), a fastening unit having a bolt and nut structure

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a screwdriver having a spiral ring portion extending in a helical shape fixedly disposed inside a tube portion, The present invention provides a screw type fastening device which is free from the restriction of the required fastening length by allowing the user to implement a height adjusting chair and a height adjusting chair capable of adjusting the height of the seat portion supporting the user's buttocks with such a screw type fastening device .

In order to achieve the above object, a screw type fastening apparatus according to the present invention is a screw type fastening apparatus for fastening a first member (10) and a second member (20) to each other, A tubular body 110 mounted on the first member 10 and having a hollow 111 penetrating in the longitudinal direction thereof; And the body 124 is extended in a spiral manner so as to be bent in a helical shape along the longitudinal direction and is formed in the longitudinal direction A first spiral ring part 120 provided with a fastening hole 122 penetrating through the first spiral ring part 122; And a screw part 130 formed in a rod shape having a predetermined length and mounted on one side of the second member 20 and extending along the longitudinal direction of the male thread 131.

The screw part 130 is rotatably inserted into the coupling hole 122 so that the screw thread 131 and the support space part 121 are engaged with each other and coupled with the first helical ring part 120, The first member 10 and the second member 20 can be fastened to each other.

The male thread 131 of the screw part 130 has a rectangular cross section having a predetermined thickness D1 and the first helical ring part 120 has a rectangular cross section having a predetermined thickness D2. May be formed by bending a plurality of times in a helical shape.

The pitch P1 of the male thread 131 has a size corresponding to the thickness D2 of the first helical ring part 120 and is formed in the supporting space part 121 formed in the first helical ring part 120, May have a size corresponding to the thickness (D1) of the male thread (131).

The diameter of the body 132 on which the male thread 131 is not formed on the screw portion 130 may have a size corresponding to the diameter of the fastening hole 122.

The first threaded ring portion 120 is formed in a cylindrical shape and has a diameter larger than the diameter of the male thread 131. The cylindrical portion 110 has an open end, And a cap unit 140 having an opening 141 formed therein.

A hooking groove 123 is formed on a circumferential surface of the first helical ring portion 120 and a hooking groove 123 is formed at a position corresponding to the hooking groove 123 on the inner wall surface of the hollow portion 111, The protrusion piece 112 protruding toward the center is formed and the rotation of the first spiral ring part 120 can be blocked while the protrusion piece 112 is inserted into the locking groove 123. [

In order to achieve the above object, a screw type fastening apparatus according to the present invention is a screw type fastening apparatus for fastening a first member (10) and a second member (20) to each other, A tubular body 110 mounted on the first member 10 and having a hollow 111 penetrating in the longitudinal direction; And the body 124 is bent in a spiral shape so that the first supporting space 121 formed in a spiral shape along the longitudinal direction is formed, A ring portion 120; And a second spiral groove 151 having a spiral second supporting space 151 formed along the longitudinal direction of the second spiral member 151 so as to extend in a spiral shape so that one end of the second spiral member 151 extends to a predetermined length and is mounted on the second member 20, And a ring part (150).

The second spiral ring portion 150 is rotatably inserted into the first support space portion 121 so that the body 153 and the body 124 of the first spiral ring portion 120 are engaged with each other, (120) so that the first member (10) and the second member (20) can be fastened to each other.

According to another aspect of the present invention, there is provided a height adjusting chair comprising: a seat portion supporting a hip of a user; A tubular body 110 formed in an upright position and having a hollow 111 penetrating therethrough in the longitudinal direction and a tubular body 110 fixed in a state of standing upright in the hollow 111, A first spiral ring portion 120 formed with a spiral support space 121 along the longitudinal direction and having a fastening hole 122 penetrating in the longitudinal direction thereof, And a screw part (130) mounted upright on the lower part of the base part and having a male thread (131) extending along the longitudinal direction; And a leg portion 220 mounted on the tubular portion 110 in a state of being vertically extended to support a load applied to the seat portion 210.

The screw part 130 is vertically moved up and down with respect to the tubular part 110 while being inserted into the fastening hole 122 so that the male screw thread 131 and the support space part 121 are engaged with each other, The height of the portion 210 can be adjusted.

According to another aspect of the present invention, there is provided a height adjusting chair comprising: a seat portion supporting a hip portion of a straight user; A tubular body 110 formed in an upright position and having a hollow 111 penetrating therethrough in the longitudinal direction and a tubular body 110 fixed in a state of standing upright in the hollow 111, A first spiral ring portion 120 having a spiral first supporting space portion 121 extending along the longitudinal direction and having a predetermined length and one side thereof mounted upright on the lower portion of the seat portion 210, And a second spiral ring part (150) having a spiral second supporting space part (151) formed along the length direction so as to be bent in a spiral shape. And a leg portion 220 mounted on the tubular portion 110 in a state of being vertically extended to support a load applied to the seat portion 210.

The second spiral ring portion 150 is rotatably inserted into the first support space portion 121 so that the body 153 and the body 124 of the first spiral ring portion 120 are engaged with each other, The height of the seat portion 210 can be adjusted.

According to the screw type fastening apparatus and the height adjusting chair including the same according to the present invention,

First, a function of a conventional female screw thread, which is engaged with a male screw thread 131 of a screw part 130 to be inserted by fixing the first helical ring part 120 formed in a helical shape in the tubular part 110, So as to provide a constrained effect on the required fastening length.

Second, the male thread 131 of the screw part 130 has a rectangular cross section having a predetermined thickness D1, and the first helical ring part 120 has a rectangular plate having a predetermined thickness D2 In comparison with the case in which the male thread 131 and the first helical ring portion 120 have a triangular or circular cross-section, the pressing force applied in the fastening direction Durability can be increased and the degree of wear of the side wall due to rotational coupling can be minimized.

Third, the pitch P1 of the male threads 131 has a size corresponding to the thickness D2 of the first spiral ring portion 120, and the pitch P1 of the male thread portions 131 has a size corresponding to the thickness D2 of the first spiral ring portion 120, Since the pitch P2 is formed to have a size corresponding to the thickness D1 of the male thread 131, the male threads 131 engaging with the support space 121 are tightly coupled with each other, Simultaneously, flow and vibration due to external pressurization can be suppressed.

Fourthly, the diameter of the body 132 on which the male screw thread 131 is not formed on the screw part 130 is formed to have a size corresponding to the diameter of the fastening hole 122 and inserted into the fastening hole 122 Since the body 132 is tightly coupled, the coupling force in the lateral direction can be increased, and the flow and vibration due to the external pressurization applied from the side can be effectively suppressed.

Fifth, the cap portion 140 covering the hollow portion 111 mounted on the tubular portion 110 is formed to have a diameter smaller than the diameter of the first spiral ring portion 120 and larger than the diameter of the male thread 131 The first threaded ring portion 120 inserted into the hollow portion 111 of the tubular body portion 110 is restrained in the fastening direction and is effectively fixed So that the foreign matter introduced into the inside can be effectively blocked.

Sixthly, a hooking groove 123 is formed on a circumferential surface of the first helical ring part 120 and a center of the tubular part 110 is formed at a position corresponding to the hooking groove 123 on the inner wall surface of the hollow 111 The first spiral ring portion 120 can be prevented from rotating due to the protrusion 112 being inserted into the engagement groove 123 and being supported by the first spiral ring portion 120. Therefore, It is not necessary to separately weld the tubular body 110 to fix the tubular body 110 to the tubular body 110 and the maintenance thereof is facilitated.

Seventhly, the screw part 130 of the fastening device 100 mounted on the height adjusting chair is rotated and inserted into the fastening hole 122 so that the male screw thread 131 and the support hollow part 121 are engaged with each other, The height of the seat portion 210 mounted on the upper end of the screw portion 130 can be adjusted to a large extent.

Eighthly, by using a second helical ring part 150 formed in the same manner as the first helical ring part 120, instead of the screw part 130, Since the one member 10 and the second member 20 can be fastened to each other, it is not necessary to separately produce the screw parts 130 having different shapes, thereby increasing the productivity and simplifying the manufacturing facility, The effect can be realized.

1 is a perspective view showing the structure of a fastening unit having a conventional bolt and nut structure,
FIG. 2 and FIG. 3 are an exploded perspective view and a side sectional view showing the construction of a screw type fastening apparatus according to a first preferred embodiment of the present invention,
FIG. 4 is an exploded perspective view showing the construction of a screw type fastening apparatus according to a second preferred embodiment of the present invention, FIG.
5 is a side cross-sectional view showing a structure of a height adjusting chair equipped with a screw type fastening apparatus according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

First, the configuration and function of a screw type fastening device (hereinafter referred to as a fastening device 100) according to a first preferred embodiment of the present invention will be described.

The fastening device 100 according to the first embodiment of the present invention includes a screw part 130 inserted into the tubular part 110 while fixing the first helical ring part 120 formed to be bent in a spiral shape, As shown in Figs. 2 and 3, the fastening means of the tubular portion 110, the first thread portion 131, the first thread portion 131, The first member 10 and the second member 20 to be fastened are fastened to each other while being provided with the spiral ring portion 120 and the screw portion 130. [

The tubular portion 110 is a connecting member for fixing the first spiral ring portion 120 to the first member 10 and has a circular tube shape and one side is mounted to the first member 10, And a hollow 111 through which the first helical ring portion 120 is inserted is formed in the longitudinal direction.

Although the lower end of the tubular member 110 is fixedly mounted on the lower portion of the first member 10 in the figure, the first member 10 is mounted on the side of the tubular member 110 Or may be mounted to the first member 10 indirectly through other members such as brackets.

The tubular body 110 may be fixedly mounted to the first member 10 or inserted into a through hole (not shown) formed in the first member 10 to be rotatable.

The first helical ring portion 120 is a coupling means for realizing a conventional female screw thread function to engage with the male thread 131 of the screw portion 130. The first helical ring portion 120 is extended in a predetermined length, And the body 124 extends in a spiral shape so as to be bent in a helical shape along the longitudinal direction, and a fastening hole 122 penetrating the body 124 in the longitudinal direction is formed therein.

The first spiral ring portion 120 is fixed to the tubular portion 110 (not shown) through fixing means (not shown) such as welding or fastening bolts so that the screw portion 130 is not rotated by the rotational force It is preferable to securely fix it to the inside of the frame.

The screw part 130 is a bolt member to be fastened to the first spiral ring part 120. The screw part 130 is formed in a rod shape having a predetermined length and one side is mounted on the second member 20, 131 extend in the extended longitudinal direction.

The screw member 130 may be fixedly mounted to the lower portion of the second member 20 in the same manner as the tube member 110 described above and the second member 20 may be fixed to the side of the screw member 130 Or may be mounted to the second member 20 indirectly through other members such as a bracket.

The screw part 130 may be fixedly mounted on the second member 20 and may be rotatably inserted and coupled to the first helical ring part 120 according to the rotation of the second member 20, When a through hole (not shown) is formed in the member 20, a head (not shown) having a diameter larger than that of the through hole is provided at the upper end of the screw portion 130. When the body 132 is inserted into the through hole The second member 20 may be rotatably mounted in a form independent from the second member 20.

In this case, the male thread 131 is not formed on the body 132 corresponding to the through hole, and the head is provided with supporting means formed in a shape of a +, -, or a hexagonal like a normal bolt, It is preferable that the screw part 130 can be rotated more easily by using a spanner.

The screw part 130 is inserted into the fastening hole 122 such that the screw thread 131 and the support space part 121 are engaged with each other and is engaged with the first helical ring part 120, And the second member 20 can be fastened to each other.

The first threaded ring portion 120 formed to be bent in a spiral shape is inserted into the tubular portion 110 to be inserted into the threaded portion 131 of the screw portion 130, So that it is possible to realize the effect that there is no restriction on the required fastening length.

2, the male thread 131 of the screw part 130 has a rectangular cross section having a predetermined thickness D1 and the first helical ring part 120 has a predetermined thickness D2, The first helical ring portion 120 and the second helical ring portion 120 are formed in a structure in which the plate member of a rectangular cross section having a triangular shape or a circular shape is bent in a helical shape a plurality of times, It is possible to increase the durability against the pressing force applied in the direction and to minimize the degree of wear of the side wall due to rotational coupling.

The pitch P1 of the male thread 131 has a size corresponding to the thickness D2 of the first spiral ring portion 120 and is smaller than the thickness D2 of the first spiral ring portion 120, The pitch P2 is formed to have a size corresponding to the thickness D1 of the male thread 131 so that the male threads 131 engaged with the support space 121 are tightly coupled to each other, The flow and vibration due to the external pressurization can be suppressed.

The diameter of the body 132 on which the male thread 131 is not formed on the screw part 130 is formed to be the same as the diameter of the fastening hole 122 and inserted into the fastening hole 122 Since the body 132 is tightly coupled, the coupling force in the lateral direction can be increased, and the flow and vibration due to the external pressurization applied from the side can be effectively suppressed.

The first helical ring portion 120 has a diameter larger than that of the male screw thread 131 and has a diameter smaller than that of the first helical ring portion 120, And a cap unit 140 having an opening 141 formed therein.

Through the configuration of the cap portion 140, the first spiral ring portion 120 inserted into the hollow portion 111 of the tubular portion 110 can be restrained in the fastening direction and can be effectively fixed while passing the inserted screw portion 130 And it is possible to effectively block the foreign matter flowing into the inside.

The cap part 140 is mounted on the upper end of the tubular part 110 and can be fixedly mounted through a fixing means such as welding or fastening bolt or the like. A male screw thread that engages with the female screw thread may be formed around the tubular body 110 to be detachably coupled to the tubular body 110.

1, a hooking groove 123 is formed on a circumferential surface of the first spiral ring portion 120, and the hooking groove 123 is formed on the inner wall surface or the bottom surface of the hollow 111, A projection piece 112 protruding toward the center of the tubular part 110 is formed at a position where the projection part 112 is inserted into the engagement groove 123 to rotate the first spiral ring part 120 Or the like.

The first spiral ring portion 120 is connected to the tubular portion 120 by the rotation of the screw portion 130 so that the first spiral ring portion 120 does not rotate together with the engagement groove 123 and the protruding portion 112. [ 110 without being fixed by welding or fastening bolts.

When the cap part 140 is detachably fastened to the tubular part 110, foreign matter may flow into the tubular part 110 or the first spiral ring part 120 may be worn or damaged, The first spiral ring portion 120 can be taken out of the tubular portion 110 in a state where the cap portion 140 is removed to remove foreign matter, replace or repair the foreign matter, and then mount the spiral ring portion 120 again.

Next, the construction and function of the fastening apparatus 100 according to the second preferred embodiment of the present invention will be described.

The fastening device 100 according to the second preferred embodiment of the present invention includes a first threaded ring part 120 and a second threaded ring part 150 formed to be bent in a spiral shape so as to be rotatably engaged with each other, The first spiral ring portion 120 and the second spiral ring portion 150 are formed as shown in Fig. 4 as the fastening means, Thereby fastening the first member 10 and the second member 20 to be fastened to each other.

The tubular body 110 is formed in a tubular shape and is mounted on the first member 10, and a hollow 111 penetrating in the longitudinal direction is formed therein.

The first spiral ring portion 120 extends in a predetermined length and is aligned in the hollow 111. The first spiral ring portion 120 extends in a spiral shape so as to be bent, A space portion 121 is formed and a fastening hole 122 penetrating in the longitudinal direction is provided inside.

The tubular portion 110 and the first helical ring portion 120 have the same structure and function as the tubular portion 110 and the first helical ring portion 120 according to the first preferred embodiment of the present invention, The description will be omitted.

The second spiral ring portion 150 is a fastening member to be fastened to the first spiral ring portion 120 and extends by a predetermined length so that one side is attached to the second member 20, A second support space 151 is formed in a spiral shape along the longitudinal direction and a fastening hole 152 penetrating in the longitudinal direction is provided in the interior.

The second spiral ring part 150 is rotatably inserted into the first support space part 121 so that the body 153 and the body 124 of the first spiral ring part 120 are engaged with each other, And the first member 10 and the second member 20 can be coupled to each other by being coupled with the first member 120. [

The first spiral ring portion 120 is formed by using the second spiral ring portion 150 formed in the same manner as the first spiral ring portion 120 in place of the screw portion 130 according to the first preferred embodiment of the present invention, The first member 10 and the second member 20 to be fastened can be fastened to each other through the rotation coupling with the screw member 130. Therefore, it is not necessary to separately produce the screw members 130 having different shapes, So that the effect of reducing the product cost can be realized.

Next, the structure and function of the height adjusting chair 200 including the fastening apparatus 100 according to the first and second preferred embodiments of the present invention will be described.

5, the height adjusting chair 200 according to the preferred embodiment of the present invention includes a seat portion 210, a fastening device 100, and a leg portion 220.

First, the seat portion 210 may be a seat member for supporting the buttocks of the user and may be formed of a plate horizontally arranged as shown in the figure, and may have a "B" shape in which the backrest is integrally formed, May be supported at the same time.

The fastening device 100 is a fastening means for fastening the seat portion 210 and the leg portion 220 to each other like the fastening device 100 according to the first preferred embodiment of the present invention, A tubular body 110 formed in a hollow shape and having a hollow 111 extending upward in its longitudinal direction and a tubular body 110 fixed in a state of standing upright in the hollow 111 and being bent in a spiral shape, A first spiral ring portion 120 having a helical supporting space portion 121 formed along the direction of the first spiral ring portion 120 and having a fastening hole 122 penetrating in the longitudinal direction thereof, And a screw part 130 formed along the longitudinal direction of the male screw thread 131 extending in the circumferential direction.

In place of the fastening apparatus 100 according to the first embodiment, like the fastening apparatus 100 according to the second embodiment, the fastening apparatus 100 according to the second embodiment is formed in an upright- A first support space part 121 fixed in a state of standing upright in the hollow 111 and extending in a spiral shape so that the body 124 is bent in a spiral shape along the longitudinal direction, A first spiral ring portion 120 formed with a first spiral ring portion 120 and a first spiral ring portion 120 having a predetermined length and one side mounted upright on the lower portion of the seat portion 210 and a body 153 extending to be bent in a spiral shape, And a second spiral ring part 150 formed with two support space parts 151.

Here, the detailed configuration and function of the fastening device 100 have been described above, and a duplicate description will be omitted.

The leg portion 220 is a supporting means for supporting the seat portion 210 so as to be disposed at a predetermined height and is mounted on the tubular portion 110 in a state of being vertically extended to apply a load applied to the seat portion 210 .

As shown in the figure, a plurality of brackets 230 are mounted around the tubular portion 110 of the fastening device 100 so that the leg portions 220 are fastened to the fastening device 100 through the brackets 230 Lt; / RTI >

The screw part 130 is vertically moved up and down with respect to the pipe part 110 while being inserted into the fastening hole 122 so that the male screw thread 131 and the support space part 121 are engaged with each other, Can be adjusted.

Alternatively, the second spiral ring part 150 is rotatably inserted into the first support space part 121 so that the body 153 and the body 124 of the first spiral ring part 120 are engaged with each other, The height of the seat portion 210 can be adjusted.

In the case of the fastening device 100, the screw portion 130 or the second spiral ring portion 150, the first spiral ring portion 120, and the tubular portion 110 The height of the seat portion 210 mounted on the upper end of the screw portion 130 or the second spiral ring portion 150 can be adjusted to a large extent.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

10 ... first member 20 ... second member
100 ... screw type fastening device 110 ... pipe part
111 ... hollow 120 ... first spiral ring portion
121 ... first support space part 122 ... fastener
130 ... screw part 131 ... male thread
140 ... cap part 150 ... second helical ring part
151 ... second support space part 200 ... height adjustment chair
210 ... seat portion 220 ... leg portion
230 ... bracket

Claims (9)

A screw-type fastening apparatus for fastening a first member (10) and a second member (20) to each other,
A tubular portion 110 formed in a tubular shape extending to a predetermined length and fixed at one end to the first member 10 and having a hollow 111 penetrating therethrough in the longitudinal direction;
The body 124 is extended in a length corresponding to the length of the tubular body 110 and fixedly mounted in the hollow 111. The body 124 extends in a spiral shape to be bent, A first spiral ring part 120 provided with a fastening hole 122 penetrating in the longitudinal direction thereof;
A screw part 130 formed in a bar shape extending in a predetermined length and fixedly mounted on the second member 20 at one end and formed along the longitudinal direction in which a male thread 131 extends; And
And a diameter larger than the diameter of the male screw thread 131 is smaller than a diameter of the first helical ring portion 120 and is larger than a diameter of the male screw thread 131. In other words, And a cap part 140 formed with an insertion hole 141 having an opening,
The screw part 130 is rotatably inserted into the coupling hole 122 so that the male screw thread 131 and the support space part 121 are engaged with each other and coupled with the first helical ring part 120, And the second member 20,
A hooking groove 123 is formed on a circumferential surface of the first helical ring portion 120 and a position corresponding to the hooking groove 123 on the inner wall surface of the hollow portion 111 is formed toward the center of the tube portion 110 Wherein the protruding protrusion piece is formed to prevent rotation of the first spiral ring part while inserting the protrusion piece into the protrusion groove.
The method according to claim 1,
The male thread 131 of the screw part 130 has a rectangular cross section having a predetermined thickness D1,
Wherein the first spiral ring portion (120) is formed by bending a plate member having a rectangular cross section having a predetermined thickness (D2) in a spiral shape plural times.
3. The method of claim 2,
The pitch P1 of the male threads 131 has a size corresponding to the thickness D2 of the first helical ring portion 120,
Wherein the pitch P2 of the support space 121 formed in the first spiral ring portion 120 has a size corresponding to the thickness D1 of the male thread 131. [
The method of claim 3,
Wherein a diameter of the body 132 on which the male thread 131 is not formed on the screw portion 130 has a size corresponding to a diameter of the fastening hole 122. [
delete delete A screw-type fastening apparatus for fastening a first member (10) and a second member (20) to each other,
A tubular portion 110 formed in a tubular shape extending to a predetermined length and fixed at one end to the first member 10 and having a hollow 111 penetrating therethrough in the longitudinal direction;
The body 124 extends in a length corresponding to the tubular body 110 and is fixedly installed in the hollow 111. The body 124 extends in a spiral shape so as to be bent, A first spiral ring portion 120 having a fastening hole 122 formed therein and penetrating in the longitudinal direction thereof;
And a second supporting space part 151 is formed in a spiral shape along the longitudinal direction while the body 153 is extended to be bent in a spiral shape, A second spiral ring portion 150 provided with a fastening hole 152 penetrating in the longitudinal direction; And
The second spiral ring portion 150 is detachably attached to the tubular portion 110 so as to cover the other open end of the tubular portion 110. The central portion of the first spiral ring portion 120 is smaller than the diameter of the first spiral ring portion 120, And a cap 140 formed with an insertion hole 141 having a diameter opened,
The second spiral ring portion 150 is rotatably inserted into the first support space portion 121 so that the body 153 and the body 124 of the first spiral ring portion 120 are engaged with each other, To fasten the first member 10 and the second member 20 to each other,
A hooking groove 123 is formed on a circumferential surface of the first helical ring portion 120 and a position corresponding to the hooking groove 123 on the inner wall surface of the hollow portion 111 is formed toward the center of the tube portion 110 Wherein the protruding protrusion piece is formed to prevent rotation of the first spiral ring part while inserting the protrusion piece into the protrusion groove.
A seat portion 210 for supporting the buttocks of the user;
A tubular body 110 formed in a tubular shape extending in a predetermined length and extending upright in the inside and having a hollow opening 111 extending upward in the longitudinal direction and a tubular body 110 extending in a length corresponding to the tubular body 110, And the body 124 is extended to be bent in a spiral shape so that a spiral support space 121 is formed along the longitudinal direction and a fastening hole 122 The first spiral ring portion 120 is provided with a first helical ring portion 120 and a second helical ring portion 120. The first helical ring portion 120 is formed in a rod shape having a predetermined length and is fixedly mounted on a lower portion of the seat portion 210, The first threaded ring portion 120 and the male threaded portion 131 are formed in a shape that covers the formed screw portion 130 and the opened upper end of the tube portion 110, Diameter larger than diameter Clamping device 100 including inserting holes 141, the cap 140 is formed with an opening; And
And a leg portion (220) fixedly mounted on the tubular body portion (110) in a state of being vertically extended to support a load applied to the seat portion (210)
The screw part 130 is vertically moved up and down with respect to the tubular part 110 while being inserted into the fastening hole 122 so that the male screw thread 131 and the support space part 121 are engaged with each other, 210,
A hooking groove 123 is formed on a circumferential surface of the first helical ring portion 120 and a position corresponding to the hooking groove 123 on the inner wall surface of the hollow portion 111 is formed toward the center of the tube portion 110 Wherein the protruding protruding piece is formed so as to cut off the rotation of the first spiral ring part while the protruding piece is inserted into the locking groove.
delete
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR20210126250A (en) 2020-04-10 2021-10-20 구본용 Device for adjusting height

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Publication number Priority date Publication date Assignee Title
KR102440465B1 (en) * 2020-09-29 2022-09-06 김종찬 Simple chair with easy height adjustment
KR102442365B1 (en) * 2021-07-30 2022-09-08 이병옥 Easy-to-use rice water control device

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2997646B2 (en) * 1996-05-28 2000-01-11 星野楽器株式会社 Drum chair height adjustment mechanism

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
KR101557922B1 (en) 2013-06-28 2015-10-07 오창환 Engagement unit having bolt and nut structure

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2997646B2 (en) * 1996-05-28 2000-01-11 星野楽器株式会社 Drum chair height adjustment mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210126250A (en) 2020-04-10 2021-10-20 구본용 Device for adjusting height

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