KR20160021700A - Desk capable of controlling height, leg of desk therefor and gear box therefor - Google Patents
Desk capable of controlling height, leg of desk therefor and gear box therefor Download PDFInfo
- Publication number
- KR20160021700A KR20160021700A KR1020140112496A KR20140112496A KR20160021700A KR 20160021700 A KR20160021700 A KR 20160021700A KR 1020140112496 A KR1020140112496 A KR 1020140112496A KR 20140112496 A KR20140112496 A KR 20140112496A KR 20160021700 A KR20160021700 A KR 20160021700A
- Authority
- KR
- South Korea
- Prior art keywords
- bevel gear
- gear
- gear box
- bevel
- desk
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/005—Leg adjustment
Landscapes
- Gear Transmission (AREA)
Abstract
Disclosed is a gear box applied to a desk leg capable of height adjustment.
The gearbox
A body 300a having a support wall body 300b formed of three support wall surfaces 320b, 322b, and 322c perpendicular to each other;
A connecting portion (320, 322, 324) formed on the front surface, the left surface, and the lower surface of the body, respectively, for receiving the bevel gears;
Bearings (310, 312, 324) provided for each of the bevel gears (304, 306, 308);
A snap ring provided for each of the bearings (310, 312, 324); And
/ RTI >
Each of the connecting portions 320, 322, and 324 is formed to extend vertically to one of the supporting wall surfaces of the supporting wall 300b and includes a bevel gear seating portion protruding in a vertical direction from the supporting wall surface, A bearing seating portion formed to extend from the gear accommodating portion, and a snap ring insertion groove into which the retaining ring for blocking the bearing housed in the bearing seating portion is inserted are formed in order.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk leg capable of height adjustment, and more particularly, to a gear box capable of precisely adjusting the height of a desk leg configured to adjust a height of a top board and capable of transmitting sufficient driving force to a desk leg.
In general, a desk is a piece of furniture that is supported and used to read or write a book. A desk used in schools, academies, offices, etc., is made up of a top plate and a leg installed at the bottom of the top plate.
Such a desk is made so that its height can not be adjusted in most cases because the legs are fixed integrally with the top plate.
In order to solve this problem, a desk capable of adjusting the height has been developed. Conventional height adjustable desks were constructed by dividing the legs into two parts, upper and lower parts, using a method of pulling out or pushing the upper part and fixing it with a fixing member, or placing a height adjusting screw in the lower part of the leg.
Fig. 21 shows an example of a conventional height-adjustable desk in the manner of adjusting the upper portion of the legs.
21, a leg supporting the
However, the leg shown in Fig. 21 can be adjusted in height only in units corresponding to the intervals of the through holes, and has a problem that it must be manually operated. The problem of manual operation can cause serious disturbances when having multiple legs. For example, in the case of a desk having four legs installed at four corners, the height of each leg must be adjusted to be the same so that the horizontal state of the
On the other hand, adjusting the height by adjusting the height adjusting screw on the bottom of the leg has a limitation that the adjusting range of the height adjusting screw is not large, and there is also a problem that it must be manually operated. Further, even when a height adjusting screw is used, the height of each leg must be carefully adjusted.
As another method, it has been proposed to simultaneously adjust the height of the entire leg using a power transmission device.
22 to 23 show a conventional height-adjustable desk using a transmission device.
22 to 23, the leg is composed of an outer case and an inner case. The inner case can be slid while being inserted into the outer case. A fixing device for fixing the wire is provided on one side of the outer case, and the wire is wound to the other side of the outer case by winding the lower portion of the inner cylinder. The wires on each leg are connected to a single pulley. When the pulley is rotated by the rotational force of the motor, the pulley is wound around the wire, and the inner leg is pulled up as the wire is wound.
However, the desk as shown in Figs. 22 to 23 is not suitable as a prefabricated desk in which only legs are installed separately because wires, internal legs, and the like must be integrally installed.
In addition, even if the motor is rotated by the slack of the wire, the driving forces transmitted to the respective legs are different from each other. As a result, it is difficult to maintain the horizontal state of the upper plate. There is also a problem that it is not.
On the other hand, lubricating oil must be applied to maintain the wire. However, since the lubricating oil damages the dust by the lubricating oil, it is not suitable for a normal office environment.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a gear box capable of precisely adjusting the height of a desk leg.
Another object of the present invention is to provide a gear box capable of providing sufficient driving force to a desk leg.
The gear box achieving the above other object
A
A connecting portion (320, 322, 324) formed on the front surface, the left surface, and the lower surface of the body, respectively, for receiving the bevel gears;
Bearings (310, 312, 324) provided for each of the bevel gears (304, 306, 308);
A snap ring provided for each of the bearings (310, 312, 324);
/ RTI >
Each of the
And is formed to extend vertically to one of the support wall surfaces of the support wall body (300b)
A bearing seating portion formed to extend from the bevel gear accommodating portion, and a snap ring insertion groove into which a retaining ring for blocking the bearing housed in the bearing seating portion is inserted are formed in order .
Here, the bevel gear has a flat upper surface, and the upper surface is supported to be connected to the supporting wall surface.
Here, a shaft hole is formed in the supporting wall surface, and a protrusion protruding from the gear shaft and inserted into the shaft hole is formed on the upper surface of the bevel gear.
The
The
The gear box according to the present invention has the effect of precisely and easily adjusting the height of the desk leg.
The gear box according to the present invention has an effect that a sufficient driving force can be transmitted to the desk leg by firmly fixing the bevel gear by the inner wall.
FIG. 1 shows an embodiment of a height adjustable desk according to the present invention.
Fig. 2 shows a configuration in which a top plate is removed from a desk shown in Fig.
Fig. 3 shows a first embodiment of a height-adjustable desk leg attached to a desk shown in Fig.
FIG. 4 shows a second embodiment of a height adjustable desk leg attached to a desk shown in FIG.
FIG. 5 shows a third embodiment of a height adjustable desk leg attached to a desk shown in FIG.
Fig. 6 shows an example of the basic configuration of the gear box shown in Fig.
Fig. 7 shows a first embodiment of the gear box shown in Fig.
Fig. 8 shows a detailed configuration of the connection portion shown in Fig.
9 shows the bevel gear of the gearbox shown in Fig.
Fig. 10 shows the appearance of the second bevel gear.
11 is an exploded view of the gear box shown in Figs. 7A to 7C. Fig.
Fig. 12 shows a second embodiment of a gear box according to the present invention.
13 is an exploded view of the gear box shown in Fig.
Fig. 14 shows a third embodiment of a gear box according to the present invention.
15 shows the appearance of the connecting box.
Fig. 16 shows a detailed configuration of the connecting box shown in Fig.
17 shows the connection state of the connecting box and the gear box.
18 shows another embodiment of a height adjustable desk according to the present invention.
Fig. 19 shows an example of a conventional height-adjustable desk in a manner of adjusting the upper portion of the legs.
20 to 21 show a conventional height-adjustable desk using a transmission device.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.
FIG. 1 shows an embodiment of a height adjustable desk according to the present invention.
1, a
When the
Since the
Fig. 2 shows a configuration in which a top plate is removed from a desk shown in Fig.
2, the
The
The connecting
Fig. 3 shows a first embodiment of a height-adjustable desk leg attached to a desk shown in Fig.
3, the height adjustable desk leg 200-1 according to the first embodiment of the present invention includes a
When the
Since the
The
FIG. 4 shows a second embodiment of a height adjustable desk leg attached to a desk shown in FIG.
Referring to FIG. 4, the height adjustable desk leg 200-2 according to the second embodiment of the present invention includes a
When the
FIG. 5 shows a third embodiment of a height adjustable desk leg attached to a desk shown in FIG.
Referring to FIG. 5, the height adjustable desk leg 200-3 according to the third embodiment of the present invention includes a
4, the
6 is for explaining the principle of the gear box according to the present invention.
6 are shown for explaining the basic principle of the gear box 300-1 of the first embodiment and the gear box 300-2 of the second embodiment. Although the angles between the
Referring to FIG. 6, the
The
The gear shaft of the
6 is characterized in that the
More specifically, the upper portions of the
Fig. 7 shows a first embodiment of the gear box shown in Fig.
The first embodiment 300-1 of the gear box according to the present invention is characterized in that the first to
Referring to FIG. 7A, concave connecting
Referring to FIG. 7A, a first connecting
A third connecting
On the other hand, a second connecting
A gear seating portion, a bearing seating portion, and a snap ring insertion groove.
7B is a perspective view showing the
Referring to FIG. 7B, a
The
7C is a perspective view showing the
The detailed configuration of the
Fig. 8 shows a detailed configuration of the connection portion shown in Fig.
8 is a side view showing the lower left side of the
8, the configurations of the
On the other hand, the
9 shows the bevel gear of the gearbox shown in Fig.
9 is the
9, the
On the other hand, the configurations of the
Fig. 10 shows the appearance of the second bevel gear.
The
.
11 is an exploded view of the gear box shown in Figs. 7A to 7C. Fig.
11, a
The
Fig. 12 shows a second embodiment of a gear box according to the present invention.
The second embodiment of the gear box according to the present invention is such that the
Referring to FIG. 12A, concave connecting
Each of the connecting
Referring to FIG. 12A, a second connecting
A third connecting
On the other hand, the first connecting
12B is a perspective view showing the third connection part and the second connection part.
Referring to FIG. 12B, a
The
The detailed configuration of the
On both sides of the
13 is an exploded view of the gear box shown in Fig.
13, a
The
The
1, one of the two
In the case of the gear box 300-1 of the first embodiment and the gear box 300-2 of the second embodiment, the rotation directions of the
Fig. 14 shows a third embodiment of a gear box according to the present invention.
Referring to FIG. 14, it can be seen that the gear box 300-3 is configured as a worm gear. The
When the gear box 300-3 is used, the direction of rotation of the
The connecting
15 shows the appearance of the connecting box.
Referring to FIG. 15, it can be seen that the connecting
16 shows a detailed configuration of the connecting box.
Referring to FIG. 16, the connecting
17 shows the connection state of the connecting box and the gear box.
18 shows another embodiment of a height adjustable desk according to the present invention.
18, a
One
The connecting
When the connecting
Here, the rotational directions of the
Figure 19 shows another embodiment of a desk according to the present invention. 19 shows that the
19, when the
20 shows an example of the hinge provided in the gear box. As shown in FIG. 22, a
The
In the example shown in Fig. 20, the
100 ...
300 ... Gearbox
Claims (5)
A connecting portion (320, 322, 324) formed on the front surface, the left surface, and the lower surface of the body, respectively, for receiving the bevel gears;
Bearings (310, 312, 324) provided for each of the bevel gears (304, 306, 308);
A snap ring provided for each of the bearings (310, 312, 324); And
/ RTI >
Each of the connecting portions 320, 322, and 324 is formed to extend vertically to one of the supporting wall surfaces of the supporting wall 300b and includes a bevel gear seating portion protruding in a vertical direction from the supporting wall surface, A bearing seating portion formed to extend from the gear receiving portion, and a snap ring insertion groove into which a retaining ring for blocking the bearing housed in the bearing seating portion is inserted are sequentially formed.
Wherein the bevel gear has a flat upper surface and the upper surface is supported to be connected to the support wall surface.
Wherein a shaft hole is formed in the supporting wall surface, and a protrusion protruding from the gear shaft and inserted into the shaft hole is formed on the upper surface of the bevel gear.
The first bevel gear 304 and the third bevel gear 308 disposed on the front and left sides of the bevel gears 304, 306, and 308 have the same size and number of gears, Wherein the second bevel gear has a larger size and a greater number of gears than the first bevel gear (304) and the third bevel gear (308).
Wherein space portions (326, 328) in which the bevel gears (304, 306, 308) are engaged are formed between the connecting portions (320, 322, 324).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20140107319 | 2014-08-18 | ||
KR1020140107319 | 2014-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160021700A true KR20160021700A (en) | 2016-02-26 |
Family
ID=55447517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140112496A KR20160021700A (en) | 2014-08-18 | 2014-08-27 | Desk capable of controlling height, leg of desk therefor and gear box therefor |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20160021700A (en) |
-
2014
- 2014-08-27 KR KR1020140112496A patent/KR20160021700A/en not_active Application Discontinuation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2019224900B2 (en) | Rotatable stand for LCD monitor | |
US20200340557A1 (en) | A linear actuator | |
KR20160021698A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20160021694A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
US8047490B2 (en) | Elevation rotating mechanism and display device using the same | |
KR20190118288A (en) | Lifter | |
CN105035993A (en) | Lifter | |
KR20160021696A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20160021693A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20170006468A (en) | Height-adjustable desk | |
KR20160021697A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20160021700A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20160021701A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
JP2016116802A (en) | Load support mechanism | |
CN204824013U (en) | Elevator | |
KR20160021695A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR20160021699A (en) | Desk capable of controlling height, leg of desk therefor and gear box therefor | |
KR101696417B1 (en) | Desk frame equipped with a height adjuster | |
AU2008226089B9 (en) | Ceiling installation lift for a multimedia projector | |
KR200446491Y1 (en) | Height adjusting device for desk | |
JP6192278B2 (en) | Lifting device for image display device | |
IT201800003599A1 (en) | MOTORIZED RECESSED SPOTLIGHT WITH CONNECTING ROD AND CRANK | |
KR200384317Y1 (en) | Height adjusting device of device and chair for student | |
KR102148629B1 (en) | Power transmission / distribution cable fixing device for electric power tools capable of shock absorption and selective direction control | |
KR20090030401A (en) | A stand device for display device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |