KR20070103572A - Support bar for installing cookery shelf - Google Patents

Abstract

A stretching pillar for a receiving shelf is provided to have excellent pressurizing and adhering power by the length adjustment, and to adjust the length thereof minutely in the state that the stretch pillar is installed between a ceiling and a bottom. A stretching pillar for a receiving shelf includes first and second pillar rods(10,20), an upper support rod(30), a length adjusting portion(40), a lower support and height adjusting portion, and a buffering portion(60). The length adjusting portion is fixed at the other end of the first support rod that is inserted into one end of the second support rod to adjust the lengths of the first and second pillar rods. The lower support and height adjusting portion supports stably the other end of the second pillar rod. The buffering portion makes the first and second pillar rods elastically supported by the lower support and height adjusting portion.

Description

Extension pillar for storing shelf {Support bar for installing cookery shelf}

1 is a schematic front view showing an example of the use of an elastic post according to the present invention;

2 is an exploded perspective view of the stretchable strut according to the present invention;

3 is an assembled side cross-sectional view of the stretchable strut according to the present invention;

Figure 4 is an assembled cross-sectional view showing an expanded state of the pressure port according to the length adjustment of the holding rods according to the present invention;

5 and 6 are excerpts cross-sectional view showing a fine control state of the elastic struts in accordance with the present invention;

FIG. 7 is a plan sectional view taken along line A-A of FIG.

<Description of the symbols for the main parts of the drawings>

1: extension pillar 2: ceiling

3: bottom 4: storage shelf

10, 20: first and second support rod 30: upper support portion

31: upper support hole 32: support cap

40: length adjustment part 41: operation tool

41: pressure port 50: lower support and height adjustment portion

51: lower base 52: height adjustment

53: elevating adjustment cap 54: elevating operation tool

55: nut 60: buffer part

311: elastic pad 312: elastic shaft

313: contact protrusion 321: through hole

411: operation tool body 412: screw shaft

413: extension rod 414: locking jaw

421: helix groove 422: hook hole

423,424: Incision groove 425: Expansion pieces

426: pressurizing protrusion 426a: contact surface

511: elastic pads 512, 523: hollow part

521: small diameter part 522: large diameter part

524: long bolt 525: polygon bar

526: operation piece 527: contact projection

528: ventilator 531: female threader

541: multi-groove 542: male part

The present invention relates to a stretchable support for a storage shelf for pillars, which is installed between an indoor ceiling and a floor, such as a kitchen, a bathroom, a veranda, and the like, to support various types of storage shelves. Not only this is possible, but it is possible to finely adjust the height after the completion of the installation of the holding rods, and also to the elastic props for the storage shelf to further increase the stability of the installation of the new construction by the shock absorbing effect through the buffering action.

In general, various types of storage shelves are installed in a place such as a kitchen, a bathroom, a veranda, and the like, so that various items can be conveniently arranged. The storage shelves are usually installed by using a separate support pillar, that is, a support post. Therefore, storage racks of various types are usually installed horizontally between both struts interposed between the ceiling and the floor.

However, the conventionally known struts have a structure in which strut rods of different diameters are simply adjustable in length when the struts are installed. Therefore, the struts have a proactive response to external forces such as vibration or shock applied between the ceiling and the wall after the struts are installed. There is a problem that is difficult.

In addition, even when fine adjustment is required after the completion of the installation of the rod, there is an inconvenience in the work that the rods of different diameters must be rotated one by one and the length of each rod is adjusted each time. The operation of rotating the rod with the rod tightly supported between the ceiling and the floor is not only very difficult and smooth, but also the possibility of moving the installation position of the shore due to forced rotation or damaging the ceiling or the floor could not be excluded at all. .

In addition, when the length of the strut is adjusted, the coupling part of the strut rod cannot be closely adhered to each other. Many structural problems could not be avoided, such as arbitrarily deforming the adjustment length.

The present invention has been invented in view of the above-mentioned conventional problems, and an object of the present invention is excellent pressure adhesion according to the length adjustment, and fine height even in a state where the stretch holder is closely installed between the ceiling and the floor. In addition, it is possible to adjust, as well as to provide a stretch holder for the storage shelf that can significantly improve the installation stability of the expansion post through the active self-expanding action between the ceiling and the floor.

An object of the present invention as described above, in the construction of an elastic post which is installed between the ceiling and the floor to fix and support the storage shelf: first and second holding rods having different diameters; An upper support member mounted on one end of the first holding rod positioned to the ceiling; A length adjusting member fixedly coupled to the other end of the first supporting rod inserted and supported at one end of the second supporting rod to adjust the length of the first and second supporting rods; A lower support and a height adjustment member for stably supporting the other end of the second support rod positioned at the bottom and enabling fine height adjustment at the same time; And a cushioning member for elastically supporting the first and second supporting rods in the state in which the length adjustment is completed through the length adjusting member so as to be stretchable with respect to the lower support and the height adjusting member. Is achieved.

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

First, reference is made to FIG. 1. 1 is a schematic front view showing a state of use of the stretch column 1 according to the present invention, the stretch column 1 according to the present invention between the ceiling (2) and the floor (3) of the kitchen or bathroom, porch, living room, etc. It is used vertically, or horizontally between the wall and the wall is used for the column use to stably hold the known storage shelves (4) for storing various articles. The storage shelf 4 described in the present invention is not limited to a specific form, but mainly refers to one manufactured using a wire material, and the storage shelf 4 is a separate fastener for both elastic struts 1. (5) is assembled and fixed.

Next, reference is made to FIGS. 2 and 3. FIG. 2 is an exploded perspective view of the stretchable support 1 according to the present invention, and FIG. 3 is an assembled side cross-sectional view before the length adjustment is made. Referring to this, the stretchable support 1 according to the present invention has a greatly different diameter. First and second support rods (10, 20); An upper support part 30 mounted on one end of the first holding rod 10 positioned as the ceiling 2; Length adjustment for adjusting the length of the first and second holding rods 10, 20 is fixedly coupled to the other end of the first holding rod 10 is inserted and supported at one end of the second support rod (20) Section 40; A lower support and height adjustment unit 50 for stably supporting the other end of the second support rod 20 positioned at the bottom 3 and enabling fine adjustment of height; And a buffer for elastically supporting the first and second support rods 10 and 20 in the state where the length adjustment is completed through the length adjustment part 40 so as to be stretchable with respect to the lower support and the height adjustment part 50. It comprises a portion 60.

As the elastic strut 1 is assembled as described above, the first support rod 10 according to the length adjustment of the first and second support rods 10 and 20 installed between the ceiling 2 and the bottom 3. It is easy to operate the rotation, and the length can be adjusted quickly and the installation of the stretchable support 1 can be made more stable and smooth through fine height adjustment, and it can be generated from the ceiling 2 or the floor 3. Self-absorbing action is possible regardless of vibration or external shock.

The first and second holding rods 10 and 20 cut and use a stainless steel pipe as necessary, and the first holding rod 10 positioned as the ceiling 10 at the time of assembly has a small diameter and has a bottom ( The second holding rod 20 positioned at 3) has a larger diameter so that the structure of the stretchable holding post 1 is assembled in such a state that the first holding rod 10 is fitted to the second holding rod 20. . On the other hand, the second holding rod 20, if necessary, several pipes having the same diameter may be used in multiple stages.

The upper support part 30 is provided with an elastic pad 311 as an upper surface which is in contact with the ceiling (2), the lower support upper portion 31 and the upper support hole (31) in which the elastic shaft 312 is divided A through hole 321 is elastically coupled to the elastic shaft 312 of the 31 to be rotated material is formed, the hollow portion 322 in which one end of the first holding rod 10 is inserted and supported is formed to open in one direction It consists of a support cap 32.

 On the other hand, the bottom surface of the upper support hole 31 is formed with a contact projection 313 for minimizing the contact area during rotation of the support cap 32 to facilitate the rotation operation according to the length adjustment. . The contact protrusion 313 may be formed on the upper surface of the support cap 32 in contact with the bottom surface of the support opening 31.

The length adjusting part 40 includes an operation tool main body 411 fixedly assembled to the other end of the first supporting rod 10 fitted to one end of the second holding rod 30, and the operation tool main body ( An operation consisting of a screw shaft 412 extending to the lower end of the 411, an extension rod 413 extending to the lower end of the screw shaft 412, and a locking jaw 414 formed of an end of the extension rod 413. Conical screw groove 421 which is screwed to the sphere 41 and the spiral shaft 412 but is formed narrower toward the bottom, and the conical screw groove (414) to be caught by the locking projection 414 of the extension rod 413 421, the engaging hole 422 formed in communication with, the expansion piece 425 is extended to the outer edge by the opposing incision groove 423, 424 opened to correspond to the upper or lower, and the expansion piece ( The contact surface 426a which protrudes outward more than the diameter of 425 is the pressurized stone for providing a constant pressing force to the inner peripheral surface of the second holding rod 20. It consists of a pressing port 42 including a piece 426, the contact surface 426a of the pressing protrusion 426 is the second holding rod when assembling the first and second holding rods 10, 20 Elastic contact is made in the state which always presses the inner peripheral wall surface of (20).

As shown in an enlarged view in FIG. 3, the expansion pieces 425 of the pressing hole 42 have a diameter smaller than the inner diameter of the second holding rod 20 before being extended by the operation tool 41. The movement of the first holding rod 10 and the second holding rod 20 can be made smoothly. In addition, the pressing tool 42 coupled to the screw shaft 412 of the operating tool 41 has a contact surface 426a of the pressing protrusion 426 formed on the extension pieces 425 in the second paper main rod. Since it is assembled in a state of rubbing with the inner circumferential wall surface of the 20, it is prevented from turning along the operating tool 41 during the tightening or releasing operation of the operating tool 41 when adjusting the length of the stretchable support 1.

The lower support and the height adjustment part 50 provided at the other end of the second holding rod 20 positioned at the bottom 3 are provided with elastic pads 511 at the lower surface contacted with the bottom 3. The lower support port 51 having a hollow portion 512 opened to the lower portion, and the small diameter portion 521 at the lower end of the hollow portion 512 of the lower support hole 51 is seated and supported to rotate, The large diameter portion 522 formed only with respect to the small diameter portion 512 is formed with a hollow portion 523 having a shape that is open upward, and a long bolt 524 is integrated into the hollow portion 523. The low-insert injection-molded polygon bar 525 is installed vertically, the height adjustment port 52 is provided with an operation piece 526 that can be held and operated by the outer peripheral surface of the large diameter portion 522, the height adjustment opening Is inserted into the hollow portion 523 of the 52, one end is fixedly assembled to the other end of the second holding rod 20, the internal thread hole 531 to the inner center The formed lifting cap 53 and the male screw portion 542 which is screwed to the female thread hole 531 of the lifting cap 53 are formed in the outer circumferential surface thereof, and the center is inserted into the polygon rod 525 at the center thereof. The groove 541 is screwed to the elevating operation tool 54 through which the groove 541 is formed and the long bolt 524 exposed to the outside of the polygonal rod 525 to be screwed to prevent the lifting operation tool 54 from being separated. It consists of a nut 55.

Contact projections for minimizing the frictional force on the bottom surface of the lower support port 51 according to the rotation operation to the bottom of the small diameter portion 521 of the height adjustment port 52 that is rotated with respect to the lower support port (51) ( 527 is formed, and the bottom surface of the small diameter portion 521 is further provided with a vent 528 communicating with the hollow portion 523. Due to the formation of the vent 528, the air is communicated when the height adjusting port 52 is mounted on the lower support hole 51 so that the combination thereof is easily made, and the height of the lower support hole 51 is also increased. Rotating operation of the adjuster 52 can be made so smoothly and smoothly.

And, the height adjustment port 52 is installed in the lower support hole 51 to be rotatable material is preferably assembled to each other in an undercut manner to prevent arbitrary separation.

The shock absorbing portion 60 is interposed on the outer circumferential surface of the polygonal bar 525 vertically installed in the hollow portion 523 of the height adjusting opening 52 to compress the lower portion of the elevating operation tool 54 elastically. Or the tension spring form is most preferred, the first and second holding rods 10 (10) of the length adjustment is completed with respect to the lower support and the height adjustment unit 50 by the action of the buffer unit 60 ( 20) active telescopic operation can be done by itself even by the impact or vibration from the ceiling or floor.

In addition, the buffer unit 60 adjusts the buffer force according to the operation of tightening and releasing the nut 55 fastened to the long bolt 524 to prevent the lifting bar 54 from being separated from the polygon rod 525. This becomes possible. For example, when the nut 55 is further tightened in the state in which the elevating cap 53 is removed from the elevating operating tool 54, the elevating operating tool 54 moves downward along the polygonal bar 525. The buffer member 60 supported on the lower side is further compressed, and on the contrary, when the nut 56 is released, the buffer member 60 is relatively relaxed, so that the appropriate buffering force of the buffer member 60 can be adjusted.

The stretchable post 1 of the present invention configured as described above is installed in a place where the installation shelf 4 is required in the assembled state as shown in FIG. 3, which will be described in detail.

First, when the expansion support (1) is to be installed between the ceiling (2) and the bottom (3), the first support rod 10, the upper support portion 30 and the lower support and the height adjustment portion 50 is not mounted The end of) is pushed into the corresponding end of the second holding rod 20 having a larger diameter and assembled. In this case, since the first and second holding rods 10 and 20 are before the length adjustment part 40 is tightened, the mutually free drawing operation can be performed by the required length. Therefore, the lower support and the height adjustment unit 50 of the second support rod 20 assembled to be adjustable in length as described above are placed in close contact with the lower bottom 3 and then the upper support 30. The first holding rod 10 is pulled out to adjust the length until it reaches the ceiling (2). Of course, on the contrary, first, the upper supporting portion 30 of the first holding rod 10 is brought into close contact with the ceiling 2, and then the second holding rod 20 is pulled downward from the first holding rod 10. The installation length may be adjusted such that the lower support and the height adjustment unit 50 provided at the end thereof contact the lower bottom 3.

The second support rod 20 is elastically installed as a buffer unit 60 in the state in which the installation length adjustment of the first and second support rods 10 and 20 is completed between the ceiling 2 and the bottom 3. The first holding rod 10 has a length adjusting portion by holding the first holding rod 10 with the other hand and simultaneously rotating it in the counterclockwise direction (tightening direction) while holding the first holding rod with the other hand for compression. 40) is tightened in a state that the vertical movement is prevented with respect to the second holding rod (20).

In more detail, when the first holding rod 10 is rotated in the counterclockwise direction, the screw shaft 412 provided in the operation tool 41 of the length adjusting part 40 assembled to the end thereof rotates. The screw shaft 412 is moved downward along the conical screw groove 421 of the pressure port 42 coupled thereto. Therefore, since the conical screw groove 421 is formed to become narrower toward the lower side by the spiral movement of the screw shaft 412, the extension pieces 425 are formed by the incision grooves 422 and 423 corresponding to each other. In the state spaced apart from the inner circumferential wall surface of the second holding rod 20 as shown in Figure 3 is expanded to the outer periphery as shown in Figure 4 while pressing close contact with the inner circumferential wall surface of the second holding rod 20 It is done. At this time, the expansion pieces 425 to press the entire inner circumferential wall surface of the second holding rod 20 while the entire portions are evenly spread by the cutting grooves 422 and 423 of the shape that are opened up and down correspondingly. As a result, strong adhesion is maintained.

In addition, when the screw shaft 412 is rotated, the pressing hole 42 in which the conical screw groove 421 is screwed is engaged with the locking jaw 414 of the extension rod 413 with respect to the locking hole 422. Since it is fitted in the state, the arbitrary separation is prevented, and the pressure port 42 has the contact surface 426a of the pressure protruding piece 426 enlarge the inner circumferential surface of the second holding rod 20 as shown in FIG. Since it is assembled in a state of constantly pressing the rotation of the screw shaft 421 is prevented to follow the rotation operation of the operation tool 41 with respect to the pressure port 42 can be made as quickly and easily.

Therefore, the first and second holding rods 10 and 20 are fixed to the fixed length through the length adjusting portion 40 which is tightened by rotating the first holding rod 10 counterclockwise. It becomes possible, and even when the first holding rod 10 is forcibly rotated in the length adjustment process, the support cap 32 assembled to the first holding rod 10 is closely supported on the ceiling (2) Since the base is rotated around the support hole 31, the damage or rotation marks of the ceiling 2 due to the rotation operation of the first holding rod 10 are not left at all.

Referring to FIGS. 5 and 6, a state in which the lengths of the first and second supporting rods 10 and 20 that are installed in the state where the length adjustment is completed between the ceiling 2 and the bottom 3 is finely described will be described. do. 5 and 6 are the lifting cap 53, which is integrally assembled and fixed to the end of the second holding rod 20 by the fine adjustment of the height adjustment port 52 to the lower or upper with respect to the lifting operation port 54. An excerpt assembly cross-sectional view of the movement-adjusted state, and FIG. 7 is a plan sectional view taken along line AA of FIG. 5.

First, referring to FIGS. 5 and 6, when the height of the first and second holding rods 10 and 20 is to be finely adjusted, the small diameter portion 521 may be rotated to the lower support 51. When the seat height adjustment device 52 is rotated in a counterclockwise direction (downward) or clockwise direction (upward) by using the operation piece 526 provided in the large-diameter portion 522, the height adjustment door 52 The vertical bar 525 vertically installed in the hollow part 523 of the hollow part 523 and the lifting operation tool 54 in which the polygon groove 541 is inserted and supported by the polygon bar 525 are also rotated in the same direction, and the lifting operation is performed simultaneously. The elevating cap 53, to which the female threaded portion 531 is coupled to the male threaded portion 542 of the sphere 54, is linearly moved downwardly or upwardly within the male threaded portion 542 of the elevating operation tool 54. . Accordingly, the first and second holding rods 10 and 20 are finely adjusted by the lifting cap 53 being moved up and down within the male screw portion 542 of the lifting operation tool 54. This will be possible.

Next, referring to Figure 7, the elevating operation tool 54 during the rotation operation of the height adjustment opening 52 is not turned back because the same bar of the polygon bar 525 of the same shape with respect to the polygon bar 525. .

On the other hand, during the rotation operation of the first holding rod 10 and the height adjustment port 52, the first holding rod 10 has a contact protrusion 313 formed with the upper support hole 31, the support cap 32 assembled thereto. ) And the height adjustment port 52 is rotated by the air communication through the contact protrusions 527 and the vent hole 528 formed in the lower portion is made very smooth and smooth.

In addition, the first and second support rods 10 and 20 are further stabilized by the respective elastic pads 311 and 511 provided in the upper and lower support holes 31 and 51 assembled to the upper and lower portions thereof, respectively. It becomes possible. In addition, in the height adjustment process, the height adjustment port 52 is rotated around the lower support port 51, so that no damage or rotation marks of the bottom 3 due to the rotation operation of the height adjustment port 52 remain. Will not.

Thus, when length and height adjustment with respect to the expansion | stretching support 1 are completed, as shown in FIG. 1, what is necessary is just to hold the storage shelf 4 between both expansion-supports 1, and to use the ceiling 2 or the floor ( 3) Even if vibration or impact is applied to the stretch column 1 according to the present invention, since the self-stretching action by the buffer unit 60 is possible, the installation stability of the stretch column 1 is greatly improved.

In addition, when the elastic support 1 is to be removed, when the first holding rod 10 is rotated in the clockwise direction (release direction), the screw shaft 412 of the operation tool 41 is reversely pressed by the pressure port 42. By extension from the conical spiral groove 421 of the expansion of the expansion pieces 425, which are forcibly opened as shown in Figure 4 is returned to the original state in the enlarged state in the circular arc of Figure 3, and these expansion pieces ( The pressing adhesion to the inner circumferential wall surface of the second holding rod 20 is released by the return operation of 425.

Therefore, the first holding rod 10 is to be dismantled from the ceiling (2) and the floor (3) as the length adjustment is made free by the release of the pressing force on the second holding rod (20). .

On the other hand, according to the present invention, since the buffer member 60 is installed in the lower support and the height adjustment unit 50 is positioned in the bottom (3), the stretch holder without adjusting the length adjusting member 40 If you want to separate (1) from the ceiling (2) and the bottom (3) it can be removed naturally by holding the stretch holding (1) and pressing downward. For example, rather than lifting the stretch column (1) to the top, the downward movement is more natural and takes less force.

As described above, according to the present invention, the length operation of the first and second holding rods constituting the elastic support can be made quickly and reliably, and even if the length adjustment is completed, fine height adjustment of the elastic support is possible. It can be installed more stably and smoothly, and the cushioning member can provide its own buffering effect regardless of vibration or external impact from ceiling or floor, so it is always tight without bending or flow And it provides an effect that can maintain a stable installation state.

In addition, when the length adjustment or height adjustment of the elastic strut, the support cap and the height adjustment port coupled to the first support rod relative to the upper and lower support holes are rotated, and the elastic pads are provided at each support hole to adjust the length. The height adjustment provides the effect of leaving no damage to the ceiling or floor or turning and installation marks.

In addition, since the support cap and the height adjustment tool of the first support rod that is rotated for each support port are rotated through the line contact by the contact protrusion, the rotation operation provides the effect that the smooth and smooth operation.

In addition, since the buffer member is provided in the lower support and the height adjustment member has the advantage that it can facilitate the separation and removal of the stretch holder through the downward pressing operation of the stretch column.

Although the present invention has been described with reference to the accompanying drawings, it should be understood that many modifications and changes may be made by those skilled in the art without departing from the scope of the following claims.

Claims (7)

In constructing a telescopic strut 1 which is installed between the ceiling 2 and the bottom 3 to fix and support the storage shelf 4: First and second support rods 10 and 20 having different diameters; An upper support part 30 mounted on one end of the first holding rod 10 positioned as the ceiling 2; Length adjustment for adjusting the length of the first and second holding rods 10, 20 is fixedly coupled to the other end of the first holding rod 10 is inserted and supported at one end of the second support rod (20) Section 40; A lower support and height adjustment unit 50 for stably supporting the other end of the second support rod 20 positioned at the bottom 3 and enabling fine adjustment of height; And A buffer unit for elastically supporting the first and second support rods 10 and 20 in the state where the length adjustment is completed through the length adjustment unit 40 so as to be stretchable with respect to the lower support and the height adjustment unit 50. Stretch holder for storage shelves, characterized in that comprises (60). According to claim 1, wherein the upper support portion 10, the upper surface is in contact with the ceiling (2) is provided with an elastic pad 311, the lower surface of the upper support sphere 31 is formed with the elastic shaft 312 divided And a through hole 321 elastically coupled to the elastic shaft 312 of the upper supporter 31 so as to be rotatable, and a hollow portion 322 in which one end of the first supporting rod 10 is inserted and supported. Stretch holder for storage shelves, characterized in that consisting of a support cap 32 is formed to open in one direction. The method of claim 1, wherein the length adjustment unit 40, An operation tool body 411 integrally assembled and fixed to the other end of the first support rod 10 fitted to one end of the second support rod 30, and extended to a lower end of the operation tool body 411. An operating tool 41 including a screw shaft 412, an extension rod 413 extending to the lower end of the screw shaft 412, and a locking jaw 414 formed at an end of the extension rod 413; Communicate with the conical screw groove 421 to be engaged with the screw shaft 412, the conical screw groove 421 having a form narrowing toward the lower portion, and the engaging jaw 414 of the extension rod 413 The inner side of the second holding rod 20 and the expansion piece 425 which is extended to the outer periphery by the engaging hole 422, the opposing incision grooves 423, 424 opened to correspond to the top or bottom It characterized in that it consists of a pressure port 42 comprising a pressing projection 426 having a contact surface 426a protruding outwardly than the diameter of the expansion pieces 425 to provide a constant pressure always against the wall surface Telescopic column for storage shelf. According to claim 1, wherein the lower support and height adjustment unit 50, An elastic pad 511 is provided as a lower surface in contact with the bottom 3, and has a lower support hole 51 having a hollow portion 512 open to the top, Inside the hollow portion 512 of the lower support 51, the small diameter portion 521 at the lower end is seated and supported to rotate, and the inside of the large diameter portion 522 formed only with respect to the small diameter portion 521. The hollow portion 523 of the open shape to the top is formed to be merely, the inside of the hollow portion 523 is a vertical rod 525, which is inserted into the long bolt 524 is integrally installed, the vertical As the outer circumferential surface of the large diameter portion 522, the height adjusting opening 52 provided with an operation piece 526 which can be held and operated by hand, Lifting cap is inserted into and supported in the hollow portion 523 of the height adjustment port 52, one end of which is fixed to the other end of the second holding rod 20, the female screw hole 531 is formed in the inner center ( 53), The lifting operation of the male screw portion 542 which is screwed to the female screw hole 531 of the elevating cap 53 is formed on the outer circumferential surface thereof, and the polygonal groove 541 fitted into the polygonal rod 525 is penetrated at the center thereof. Sphere (54) and Expansion and contraction shelf for storage shelf, characterized in that the screw 55 is screwed to the long bolt 524 exposed to the outside of the polygon bar 524 is screwed to prevent separation of the elevating operation tool 54 landlord. 5. The contact surface 313 or 527 of claim 2 or 4, wherein the bottom surface of the upper support port 31 and the bottom surface of the height adjustment port 52 are provided with contact protrusions 313 and 527 for smoothly inducing a rotation operation. Telescopic column for storing shelf characterized by baggage. The stretcher holder according to claim 4, wherein the height adjustment port (52) is further provided with a vent (528) for inducing a stable mounting on the lower support port (51). According to claim 1, wherein the buffer unit 60 is a stretch holder for a storage shelf, characterized in that the compression or tension spring form.

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