KR100885263B1 - Apparatus for manual type adjusting the height of a desk - Google Patents

Apparatus for manual type adjusting the height of a desk Download PDF

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Publication number
KR100885263B1
KR100885263B1 KR1020080058895A KR20080058895A KR100885263B1 KR 100885263 B1 KR100885263 B1 KR 100885263B1 KR 1020080058895 A KR1020080058895 A KR 1020080058895A KR 20080058895 A KR20080058895 A KR 20080058895A KR 100885263 B1 KR100885263 B1 KR 100885263B1
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KR
South Korea
Prior art keywords
gear
desk
adjustment device
height adjustment
gearbox
Prior art date
Application number
KR1020080058895A
Other languages
Korean (ko)
Inventor
정해창
Original Assignee
듀오백코리아 주식회사
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Priority to KR1020080058895A priority Critical patent/KR100885263B1/en
Application granted granted Critical
Publication of KR100885263B1 publication Critical patent/KR100885263B1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/06—Tables with tops of variable height with vertical toothed rack
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle
    • A47B2009/046—Tables with tops of variable height with vertical spindle with gearbox
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/02—Tables with tops of variable height with balancing device, e.g. by springs, by weight

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  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

The present invention relates to a manual height adjustment device of the desk, and to adjust the height adjustment device of the desk, including various tables and work tables used in homes or offices through a multi-threaded screw, so that it can be adjusted very quickly and efficiently and is simple. Its purpose is to provide a manual height adjustment device for a desk to have a robust structure.

      To this end, the manual height adjustment device of the desk according to the present invention, the height of the desk consisting of a top plate made of a rectangular flat plate and a pair of vertical members installed on both sides of the bottom plate; The pair of vertical members; An inner frame having a predetermined space formed therein and an inner frame selectively raised or lowered inside the outer frame; After the guide member is formed in the inner center of the outer frame in the longitudinal direction, the upper end of the female screw portion is coupled; In the state in which the gear box with the bevel gear is fixedly installed on the upper end of the inner frame, the handle is mounted on one side of the gear box and the central axis of the male screw portion is formed on the lower side of the gear box; The rotational force according to the operation of the handle is transmitted to the male thread consisting of a multi-threaded screw through the bevel gear, so that the male screw portion is raised or lowered riding the female screw portion, the inner frame is fixed to the gearbox is fixed, the height of the vertical member is interlocked Will be adjusted.

Description

Manual height adjustment device of desk {APPARATUS FOR MANUAL TYPE ADJUSTING THE HEIGHT OF A DESK}

The present invention relates to a manual height adjustment device for a desk, and more particularly, the height adjustment device provided on the legs of various desks or tables used in homes or offices is configured through a multi-threaded screw, and the upper plate is very efficient and quick. It relates to a manual height adjustment device of a desk to adjust the height.

      In general, various desks including work tables or tables used in homes, schools, offices, etc. are provided with a top plate made of a rectangular plate shape, and vertical members having a predetermined height are fixed to both top and bottom sides of the top plate, respectively. It is to be located at a point having a certain height from the ground.

      In addition, in recent years, various desks as described above need to adjust the height of the upper plate according to the user's body type or purpose of use, etc. Accordingly, the vertical members constituting the desk legs have various heights. The regulator is being applied.

      Accordingly, the present applicant has various structures through domestic patent No. 792193 (name of the invention: adjusting the height of a table) and domestic utility model registration application No. 2007-20206 (name of the proposal: height adjusting structure of a bookcase). Has applied for a desk height adjustment device.

      However, in the above-described height adjustment device of the desk, in the former case, as the height adjustment device is configured through a wire and a plurality of sheaves, the structure is complicated, but it is difficult to make the adjustment of the height more quickly and efficiently. In the latter case, the height of the desk can be made quickly through the multi-threaded screw, but a problem arises in that a separate complicated structure must be applied to prevent the arbitrary flow due to the characteristics of the multi-threaded screw.

Accordingly, the present invention has been made to solve the above-mentioned problems, the object of which is to form a very fast by adjusting the height adjustment device of the desk, including various tables or work tables used in homes and offices through a multi-screw It is to provide a manual height adjustment device of a desk to be able to adjust while still having a simple and robust structure.

In addition, another object of the present invention by interconnecting a pair of vertical members provided on the desk via a hexagonal rod member to adjust the height of one vertical member at the same time as the other vertical member can also be adjusted in conjunction with the same height It is to provide a manual height adjustment device of the desk improved the convenience of adjustment.

      Manual height adjustment device of the desk according to the present invention for achieving the above object, the height adjustment device of the desk consisting of a top plate made of a rectangular flat plate and a pair of vertical members installed on both lower sides of the top plate. In; The pair of vertical members; An inner frame having a predetermined space formed therein and an inner frame selectively raised or lowered inside the outer frame; After the guide member is formed in the inner center of the outer frame in the longitudinal direction, the upper end of the female screw portion is coupled; In the state in which the gear box having a bevel gear is fixed to the upper end of the inner frame, the handle is mounted on one side of the gear box, as well as the central axis of the male screw portion is formed on the lower side of the gear box; The rotational force according to the operation of the handle is transmitted to the male thread consisting of a multi-threaded screw through the bevel gear, so that the male screw portion is raised or lowered riding the female screw portion, the inner frame is fixed to the gearbox is fixed, the height of the vertical member is interlocked It is made to be adjusted; characterized by.

      Preferably, a disc-shaped interlocking gear having a gear formed on one surface is installed at the center of the gear box, and a drive gear on which the handle is mounted is engaged on one side of the gear surface of the interlocking gear, and the interlocking gear of the interlocking gear is installed. The other side of the gear is installed in a state in which the auxiliary gear is engaged to correspond to the drive gear, the lower side of the gear surface of the interlock gear is installed in a state in which the driven gear in which the central shaft of the male thread is mounted is in engagement with, according to the operation of the handle Rotational force is characterized in that configured to be transmitted to the male screw via the drive gear, the interlocking gear and the driven gear.

      More preferably, the drive gear, the driven gear and the auxiliary gear provided in the gearbox are each composed of a cone-shaped gear portion, a disk-shaped step and a cylindrical body, and the clutch spring is coupled to the outer circumferential surface of each body. The end of the clutch spring is intermittent to each engaging groove of the gearbox, and each gear is made of multi-threaded screws as the gear spring is smoothly rotated in one direction and the damper function is added in the reverse direction. The male thread portion is characterized in that it is configured to be prevented from flowing down or falling sharply by its own weight.

      In addition, the center shaft of the interlocking gear is installed so as to protrude in the center in the state penetrating the gearbox in the form of a hexagonal coupling hole is formed, each of the gearbox provided on a pair of vertical members of the interlocking gear The pair of vertical gears are connected to each other by a connecting rod having a hexagonal cross section through a coupling hole, and the interlocking gear rotational force of one gearbox according to the operation of the handle is transmitted to the interlocking gear of the other gearbox via the connecting rod. The member is characterized in that its height is configured to be adjusted at the same time.

According to the manual height adjustment device of the desk made as described above, by configuring the height adjustment device of the desk via a multi-threaded screw, a pair of vertical members can be interlocked to adjust the height of the desk very quickly and efficiently. As a result, the convenience of the user is maximized.

In addition, by making the height adjustment structure of the desk to have a very simple and robust structure, it is also possible to provide a high quality product while reducing the manufacturing cost of the product.

      Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

      1 is a perspective view showing a desk with a manual height adjustment device of the desk according to the invention, Figure 2 is an exploded perspective view showing a desk with a manual height adjustment device of the desk according to the present invention, Figures 3a and 3b is in the present invention 3D is a perspective view showing a configuration of the vertical member of the manual height adjustment device of the desk according to the present invention, and FIG. 3C is an exploded perspective view of the internal frame of the vertical member of the manual height adjustment device of the desk according to the present invention, FIGS. 3D and FIG. 3e is a side cross-sectional view and a front sectional view showing the configuration of the vertical member of the manual height adjustment device of the desk according to the present invention, Figures 4a and 4b is a perspective view showing the configuration of the gear box of the manual height adjustment device of the desk according to the present invention and 4C to 4E show a configuration of a gearbox of a manual height adjusting device for a desk according to the present invention. 5 and 5 are front views showing a state in which the height of the vertical member is adjusted through the manual height adjustment device of the desk according to the present invention, and FIGS. 6A and 6B are the desk according to the present invention. Side view showing a state in which the height of the vertical member is adjusted through the manual height adjustment device of Figure 7 is a view showing the configuration of the gear provided in the gear box of the manual height adjustment device of the desk according to the present invention, Figure 8a and 8b Is a view showing the operating state of the gear provided in the gear box of the height adjusting device of the desk according to the present invention.

      Manual height adjustment device of the desk according to the present invention, the upper plate 10 made of a substantially rectangular flat plate is provided, the vertical member 20 having a predetermined height, respectively installed on both lower sides of the upper plate 10 is configured In a desk including various tables or work tables, the height of the upper plate 10 can be adjusted by selectively adjusting the height of the vertical member 20.

      That is, the pair of vertical members 20 provided at both lower sides of the upper plate 10 has a supporting member 22 formed at the lower end thereof, and the upper plate installing member 24 for installing the upper plate 10 at the upper end thereof. In the combined state, each of which is formed in the form of a bar (bar) formed with a predetermined space therein, the outer frame 30 is provided with a predetermined space therein, and a portion of the inside of the outer frame 30 overlapping Is installed in a state is configured to include an inner frame 40 to allow the height of the vertical member 20 to be adjusted while being selectively raised or lowered according to the action of the predetermined part.

      Here, the inner member of the outer frame 30 is inserted into the guide member 32 along the longitudinal direction from the lower end of the inner thread portion 34 is formed on the upper end, while the upper end of the inner frame 40 In the state in which the gear box 50 is provided with a bevel gear is fixed therein, one side of the gear box 50 is equipped with a handle 70 connected to the rotating shaft 72 and the lower side of the gear box 50 The central axis 44 of the male screw portion 42 consisting of multi-threaded screw is coupled to.

        The central shaft 44 of the male screw portion 42 may be manufactured integrally by injection molding, or may be configured after being manufactured as a separate member, respectively.

      In addition, a pair of guide wheels 36 are installed at the lower end of each inner frame 40 so as to be rotatable by wheel fixing pins 36a, so that the guide wheels when the inner frame 40 is raised and lowered. 36) the stable operation is made while traveling along the outer surface of the guide member 32 and the inner wall of the inner frame 40.

      In addition, the upper plate 10 is located on the upper surface of each gear box 50 provided in the pair of inner frame 40, the rising or together with the gear box 50 interlocked with the inner frame 40 Configured to descend.

      At this time, the gear box 50 is fixed to the inner frame 40 is in the form of a substantially rectangular parallelepiped shape having a space therein in the inner center of the disk-shaped interlocking gear 54 is formed with a gear on one surface is installed The driving gear 52 on which the rotating shaft 72 of the handle 70 is mounted is engaged on one side of the gear surface of the interlocking gear 54, and the driving gear is located on the other side of the gear surface of the interlocking gear 54. Subordinate gear 58 is installed in a state in which the auxiliary gear 58 is engaged so as to correspond to 52, and a driven gear 56 in which the central axis 44 of the male screw portion 42 is mounted below the gear surface of the interlocking gear 54. Is installed in engagement.

      To this end, the driving gear 52, the driven gear 56 and the auxiliary gear 58 are formed in a state in which the coupling holes 52a, 56a, 58a having a hexagonal cross section penetrate the center, respectively. The rotation axis 72 of the handle 70 coupled to the coupling holes 52a, 56a, 58a, the central axis 44 of the male threaded portion 42, and the rotation axis of the auxiliary gear 58 are also rod members having the same hexagonal shape. It is composed.

      Accordingly, when the manipulation of the handle 70 is made by the user, the rotational force is sequentially transmitted to the drive gear 52, the interlocking gear 54, and the driven gear 56 while being transmitted to the driven gear 56. Rotating the central shaft 44 of the combined male threaded portion 42, through which the male threaded portion 42 is raised or lowered riding the female threaded portion 34 while the gear box 50 is fixed to the inner frame 40 is interlocked so that the height of the vertical member 20 is adjusted.

      At this time, the auxiliary gear 58 provided in the gearbox 50 serves as an auxiliary role for the bevel gear provided in the gearbox 50 to operate stably and in a balanced manner.

      In addition, the driving gear 52, the driven gear 56, and the auxiliary gear 58, which are provided inside the gear box 50, are all formed at a predetermined point of the interlocking gear 54 in a state of being made to have the same shape. Each gear is configured to include a cone-shaped gear portion, a disk-shaped jaw formed at the rear thereof, and a cylindrical body formed at the rear of the jaw, and each of the gear body outer peripheral surfaces includes a clutch spring ( 52b, 56b, 58b is coupled to one end of the clutch spring (52b, 56b, 58b) is configured to be intermittent to each engaging groove 59 provided in the gearbox 50 therein.

      Accordingly, the drive gear 52, the driven gear 56 and the auxiliary gear 58 are smoothly rotated in one direction through the clutch springs 52b, 56b, and 58b, and a damper function is added in the reverse direction. Is made possible.

      Accordingly, the male thread portion 42 formed of the multi-threaded screw can be prevented from flowing down arbitrarily by the bevel gear structure composed of a plurality of gears including the interlocking gear 54, and the clutch springs 52b, 56b, By the action of 58b), it is possible to prevent the rapid fall due to its own weight when the male screw portion 42 descends.

      On the other hand, the central axis of each of the interlocking gears 54 provided in the pair of gearbox 50 is installed in a state that protrudes to the outside of the gearbox 50 in the state in which the hexagonal coupling hole 54a is formed, The pair of interlocking gears 54 are configured such that the connecting rods 80 having a hexagonal shape are coupled to each other so that their cross sections correspond to the coupling holes 54a.

      Accordingly, the rotational force of the interlocking gear 54 of one gearbox 50 according to the operation of the handle 70 is transmitted to the interlocking gear 54 of the other gearbox 50 via the connecting rod 80. Accordingly, the pair of vertical members 20 will be able to adjust the height at the same time.

      Reference numeral 60 is a guide bushing coupled to the end side of the connecting rod 80 interconnecting the pair of interlocking gears 54, and reference numeral 62 is a departure for preventing separation of the guide bushing 60. Indicates the prevention cap.

      In addition, reference numeral 82 denotes an auxiliary connecting rod interconnecting the two vertical members 20, the connecting rod 80 and the auxiliary connecting rod 82 is applied to a specific structure so that its length is selectively expanded or reduced Accordingly, it may be configured to adjust the width of the desk to use only by replacing the top plate (10).

      Next, the operation of the present invention made as described above will be described in detail with reference to the drawings.

      First, the vertical member 20 of the desk according to the present invention is configured by dividing the outer frame 30 and the inner frame 40, therein includes a male screw portion 42 and a female screw portion 34 made of multi-threaded screws therein. In a state in which a height adjustment device having a specific structure is installed, the user rotates the handle 70 located at one front side of the desk in one direction or in reverse direction to adjust the height of the desk.

      That is, when the handle 70 is rotated in one direction in order to increase the height of the desk vertical member 20, the gearbox 50 in which the rotating shaft 72 of the handle 70 is mounted in the coupling hole 52a is provided. As the driving gear 52 in the inside rotates in one direction, the interlocking gear 54 is interlocked, and the rotational force is transmitted to the driven gear 56 to rotate the driven gear 56 as the driven gear 56 rotates. The male screw portion 42 coupled to the central shaft 44 in the coupling hole 56a is rotated in one direction.

      Accordingly, the male screw portion 44 performs the action of raising the inner frame 40 while raising the female screw portion 34 installed on the top of the guide member 32 of the outer frame 30 together with the rotational operation thereof. do.

      At this time, the interlocking gears 54 of the gear box 50 respectively provided on the pair of vertical members 20 are connected to each other via a connecting rod 80, and according to the manipulation of the handle 70 The rotational force of the one interlocking gear 54 is transmitted equally to the other interlocking gear 54 so that the height of the pair of vertical members 20 can be adjusted at the same time.

      In addition, when the handle 70 is rotated in a reverse direction to lower the height of the desk vertical member 20, the gear shaft 50 of the rotation shaft 72 of the handle 70 is mounted in the coupling hole 52a. As the driving gear 52 in the reverse direction rotates the interlocking gear 54 and the rotational force is transmitted to the driven gear 56 again to rotate the driven gear 56 as the driven gear 56 rotates. Rotate the male screw portion 42 coupled to the central shaft 44 in the coupling hole 56a of the reverse direction.

      Therefore, the male screw portion 42 performs the action of lowering the inner frame 40 while descending on the female screw portion 34 installed on the top of the guide member 32 of the outer frame 30 together with the rotational operation thereof. In the same manner, since the interlocking gears 54 of the gear box 50 respectively provided on the pair of vertical members 20 are configured to be connected to each other via the connecting rod 80, the operation of the handle 70 The rotational force of the one interlocking gear 54 is equally transmitted to the other interlocking gear 54 to simultaneously lower the height of the pair of vertical members 20.

      At this time, the clutch spring (52b, 56b, 58b) of the clutch spring (52b, 56b, 58b) is coupled to the outer peripheral surface of the body of the drive gear (52), the driven gear (56), the auxiliary gear (58). Since one end portion is configured to be interrupted by each engaging groove 59 provided in the gearbox 50, as shown in FIG. 8A, there is no influence in the upward direction of the male screw portion 42. The smooth rotation is achieved, but as shown in FIG. 8B, the clutch springs 52b, 56b, and 58b are tightened in the downward direction of the male screw portion 42, thereby acting as a brake. This will prevent the sudden fall of).

      In addition, the three clutch springs 52b, 56b, 58b respectively installed on the outer circumferential surfaces of the drive gear 52, the driven gear 56, and the auxiliary gear 58 each have a load of approximately 100 [Kg]. , While acting to prevent the arbitrary rotation of the, while the male thread portion 42 made of multi-threaded screw to act as a locking device to prevent the arbitrary flow and flow down by the load of the table top plate 10 and the user's pressing force. .

      Thus, the male thread portion 42 consisting of a multi-threaded screw (three-threaded or four-threaded screw) in the manual height adjustment device of the desk according to the present invention while quickly rising or descending on the female threaded portion 34 to open the inner frame 40. The height of the vertical member 20 of the desk can be adjusted as it is pulled in or pulled out from the outer frame 30.

      That is, since the screw portion of the male screw portion 42 installed on the lower gearbox 50 on the upper side of the inner frame 40 consists of multi-threaded screws such as three-threaded screws or four-threaded screws, they move at the same rotation compared to conventional male screws. As the distance is increased three times (three pitches) or four times (four pitches), a quick adjustment can be made, while the driving gears 52 and the interlocking gears 54, to which the clutch springs 52b, 56b and 58b are coupled, respectively, By the gearbox 50 made of a bevel gear including the driven gear 56, the arbitrary flow of the male thread portion 42 composed of multi-threaded screws is prevented, as well as clutch springs 52b and 56b coupled to each gear. By the action of 58b, it is possible to prevent the sudden drop of the inner frame 40.

      On the other hand, even if the modified embodiments different from the contents described in the present invention is not to be individually understood from the technical spirit or prospect of the present invention.

      1 is a perspective view showing a desk to which the manual height adjustment device of the desk according to the present invention is applied,

      Figure 2 is an exploded perspective view showing a desk to which the manual height adjustment device of the desk according to the present invention is applied,

      Figure 3a and Figure 3b is a perspective view and a perspective view showing the configuration of the vertical member of the manual height adjustment device of the desk according to the present invention,

      Figure 3c is a detachment attempt showing the configuration of the inner frame of the vertical member of the manual height adjustment device of the desk according to the invention,

      Figure 3d and Figure 3e is a side cross-sectional view and front sectional view showing the configuration of the vertical member of the manual height adjustment device of the desk according to the present invention,

      4a and 4b is a perspective view and an exploded perspective view showing the configuration of the gear box of the manual height adjustment device of the desk according to the invention,

      4c to 4e is a front sectional view and a side sectional view and a plan view showing the configuration of the gear box of the manual height adjustment device of the desk according to the present invention;

      5a and 5b is a front view showing a state in which the height of the vertical member is adjusted through the manual height adjustment device of the desk according to the invention,

      6a and 6b is a side view showing a state in which the height of the vertical member is adjusted through the manual height adjustment device of the desk according to the invention,

      7 is a view showing the configuration of the gear provided in the gear box of the manual height adjustment device of the desk according to the present invention,

      8a and 8b is a view showing the operating state of the gear provided in the gear box of the height adjusting device of the desk according to the present invention.

      Explanation of symbols on the main parts of the drawings

      10: top plate, 20: vertical member,

22: support member, 24: top plate mounting member,

30: outer frame, 32: guide member,

34: female thread, 36: guide wheel,

36a: wheel fixing pin, 40: internal frame,

42: male portion, 44: central axis,

50: gearbox, 52: drive gear,

52a, 54a, 56a, 58a: coupling hole, 52b, 56b, 58b: clutch spring,

54: interlocking gear, 56: driven gear,

58: auxiliary gear, 59: locking groove,

60: guide bushing, 62: release prevention cap,

70: handle, 72: axis of rotation,

      80: connecting rod, 82: auxiliary connecting rod.

Claims (4)

      It consists of a top plate made of a rectangular flat plate and a pair of vertical members installed on both lower sides of the top plate, the pair of vertical members are selectively in the outer frame and the inside of the outer frame, each formed a predetermined space therein It is made of an inner frame which is raised or lowered, the inner center of the outer frame is formed with a guide member along the longitudinal direction, the upper end of the female screw is coupled, the upper end of the inner frame is a gearbox provided with bevel gears One side of the gear box in a fixed installation state is equipped with a handle and the central axis of the male screw portion is coupled to the lower side of the gear box, the rotational force according to the operation of the handle is transmitted to the male screw through the bevel gear to the male screw portion As the gear is raised or lowered by the female thread part, the gear Suga As the inner frame fixed linkage installed in the height of the vertical member is made so that the control desk with manual adjuster;       The male screw portion includes a multi-threaded screw;      A disc-shaped interlocking gear having a gear formed on one surface is installed in the center of the gear box, and a driving gear on which the handle is mounted is engaged on one side of the gear surface of the interlocking gear, and the gear surface of the interlocking gear is mounted. The side gear is installed in a state in which the auxiliary gear is engaged to correspond to the drive gear, and the lower side of the gear surface of the interlocking gear is installed in a state in which a driven gear in which the central shaft of the male thread is mounted is engaged, and the rotational force according to the operation of the handle is It is configured to be transmitted to the male screw portion via the drive gear, the interlocking gear and the driven gear;       The drive gear, the driven gear and the auxiliary gear provided in the gearbox are each composed of a cone-shaped gear part, a disk-shaped step and a cylindrical body, and the clutch spring is coupled to the outer circumferential surface of each body, and then the end of the clutch spring. Is intermittent to each engaging groove of the gearbox, each gear is made to smoothly rotate in one direction via the clutch spring, and the damper function is added in the reverse direction, the male thread consisting of multi-threaded screw Manual height adjustment device of the desk, characterized in that it is configured to prevent falling or falling sharply. delete delete       The method of claim 1,      The center shaft of the interlocking gear is installed so that the center thereof protrudes while penetrating the gearbox in a state where a hexagonal coupling hole is formed, and the gearboxes respectively provided on a pair of vertical members are coupling holes of the interlocking gear. The pair of vertical members are connected to each other by a connecting rod having a hexagonal cross section, and the interlocking gear rotational force of one gearbox according to the manipulation of the handle is transmitted to the interlocking gear of the other gearbox via the connecting rod. Manual height adjustment device of the desk, characterized in that the height is configured to be adjusted at the same time.
KR1020080058895A 2008-06-23 2008-06-23 Apparatus for manual type adjusting the height of a desk KR100885263B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101376660B1 (en) 2012-06-03 2014-03-20 조기환 Regulate possible high and low drive system of frame
KR101394645B1 (en) 2013-11-26 2014-05-13 장근대 Left-down table
KR101409995B1 (en) 2013-10-02 2014-07-02 장근대 Left-down table

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100795021B1 (en) 2007-11-22 2008-01-16 듀오백코리아 주식회사 Apparatus for adjusting the height of a desk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100795021B1 (en) 2007-11-22 2008-01-16 듀오백코리아 주식회사 Apparatus for adjusting the height of a desk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101376660B1 (en) 2012-06-03 2014-03-20 조기환 Regulate possible high and low drive system of frame
KR101409995B1 (en) 2013-10-02 2014-07-02 장근대 Left-down table
KR101394645B1 (en) 2013-11-26 2014-05-13 장근대 Left-down table

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