KR100867111B1 - Electronic type elevator for display unit - Google Patents

Abstract

An electric elevator is provided to vary the length of the elevator minimally or maximally because elevation members are connected in a multi-step type, thereby minimizing the volume of the elevator and largely increasing the height of the elevator. A display device is installed in a support(150). An upper end of an elevating member(S) is connected with a support and a lower end(160) is mounted in a lower end of the elevating member. The elevating members are overlappingly connected each other so that the length of the elevating member is varied. A driving unit(R) is installed at a base to elevate the elevating member. The elevating member is set up vertically through the base. The lower end of the elevating member is connected to the driving unit in the first axis(1). The second axis(2) is coupled with an external circumference of an upper side of the first axis by a screw. The third axis(3) is connected to an external circumference of an upper side of the second axis by a screw and an upper end of the third axis is installed in the support.

Description

Electric lifting device combined with display device {ELECTRONIC TYPE ELEVATOR FOR DISPLAY UNIT}

The present invention relates to an electric hoisting device in which a display device is coupled, and more particularly, a video display device such as a computer monitor, a PDP-TV, an LCD-TV, an electronic board, and the like can be stored in a cabinet to protect against external impact. The present invention relates to an electric hoisting device in which a display device is combined so as to be withdrawn only when it is used.

In recent years, advances in technology have made display devices more compact, leading to the introduction of thinner and lighter products.

Representative examples include video display devices such as LCD computer monitors, PDP-TVs, LCD-TVs, and electronic blackboards.

Such display devices are light and thin, which is vulnerable to shock and shaking, which may cause an accident of falling from the installation site and causing damage.

In particular, in recent years, computer classes are also available in each class, so that computers are installed in student desks, and electronic blackboard lectures are conducted using computers.

Even in this case, there is a high possibility that the monitor and the electronic board may fall due to carelessness of the children.

Therefore, various types of lifting devices have been applied to solve the problem of breakage and to minimize the space occupied and to easily adjust the angle to avoid light reflection.

An example of the prior art is published in Republic of Korea Utility Model Registration Publication No. 0114350.

6 is a view showing an example of a conventional lifting device for a display device.

Referring to Fig. 6, the prior art is provided in the computer table (1); An opening (3) is formed as one bottom of the computer table (1) to open and close the viewing window (4) selectively; An up-down base (4) on which a monitor (M) can be placed on the upper and lower lifting posts (18, 19) of the elevating cylinders (20, 21) at the bottom of the elevating unit (2); A lead screw 11 is vertically installed at the center bottom of the up-down base 6, and the lead screw 11 is a chain gear 10 and a chain 14 inserted into the drive shaft 9 of the reduction motor 8. The upscrew base 11 is configured to move up and down while the lead screw 11 is pivoted up and down by the pivoting operation of the chain gear 13 by engaging the female screw 12 of the chain gear 13 connected with (); On one side of the elevating unit 2 on which the up and down bases 6 are installed, upper and lower limit switches 22 and 23 that can be selectively connected at the time of elevating the up and down bases 6 are installed and electrically connected to the elevating switches 23. It can be seen that the monitor lifting device for a computer table, characterized in that configured to control the reduction motor (8) by connecting.

However, the prior art has a problem that the lifting length is limited to the length of the lead screw.

If the length of the lead screw is formed long, because the bending occurs it is difficult to set longer than a certain length.

The present invention has been made to solve the above problems of the prior art, the lifting member supporting the display device by folding in multiple stages can be reduced to the minimum length when folded and the maximum length when unfolded to minimize the volume In addition, it is an object of the present invention to provide an electric lifting device in which a display device is coupled to make the lifting height much higher than that of the prior art, which is convenient to use.

The object of the present invention,

Fixture to which the display device is installed,

An upper and lower ends of the elevating member coupled to the stage and coupled to the base connected in multiple stages;

A driving unit installed on the lower portion of the base to move the elevating member to move up and down;

The display device, characterized in that comprises a, is achieved by a combined electric lifting device.

According to the present invention, the elevating member for supporting the display device is coupled to the multi-stage shaft can be changed to the minimum and maximum length to minimize the volume, the elevating height can be much increased than the prior art is easy to use It has a convenient effect.

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

Attached Figure 1 is a front view of the electric lifting device coupled to the display device according to the present invention, Figure 2 is a perspective view showing an internal main part of the electric lifting device coupled to the display device according to the present invention, Figure 3 is Figure 2 4 is an exploded perspective view of the "elevating member" in the electric lifting device coupled to the display device according to the present invention shown in FIG.

As shown in Figure 1 and 2, the electric lifting device coupled to the display device according to the present invention,

Fixing stand 150 is installed display device 100,

The upper end is connected to the fixing rod 150 and the lower end is mounted to the base 160, the lifting member (S) is adjusted in length by overlapping multiple stages,

Drive unit R provided in the lower portion of the base 160 to elevate the elevating member (S)

It is configured to include.

The display apparatus 100 applied to the present invention is collectively referred to as a computer monitor, PDP-TV, LCD-TV, and the like.

As shown in Figure 3 and 4, the elevating member (S),

A first shaft 1 installed vertically through the base 160 and having a lower end connected to the driving unit;

A second shaft (2) screwed to an upper outer circumference of the first shaft (1),

It is screwed to the upper outer periphery of the second shaft (2) and the upper end is composed of a third shaft (3) installed on the holder 150.

The first shaft (1) is a rod having a predetermined length, the thread is formed on the outer peripheral surface, the lower end is installed through the base 160, coupled to the base 160 and the bearing to facilitate rotation, the upper end is One catch 5 is formed.

The first catching hole 5 is a ring shape having a diameter larger than that of the first shaft 1, and the first and third catching jaws 51 and 53 having right triangles on the upper and lower surfaces thereof are formed to face each other.

The second shaft 2 is a rod having both ends and a predetermined length having a passage 20 formed therein, and a coupling member having the first shaft 1 screwed to an inner lower end of the passage 20. 4) is inserted, and the threaded portion 22 is formed on the upper outer peripheral surface.

The coupling member 4 has a cylindrical shape with a screw thread formed on an inner circumferential surface thereof so as to be screwed with the first shaft 1, and a second locking hole 6 is formed at the upper end thereof so as to be engaged with the first locking hole 5. .

The second catching mouth 6 has a ring shape having the same diameter as that of the first catching hole 5, and a second catching jaw 62 is formed on the upper surface thereof to be engaged with the third catching jaw 53.

The second catching jaw 62 is a right triangle having the same shape as the first catching jaw 51.

A third catch having a fourth catching jaw 74 at a lower surface of the inner upper end of the passage 20 of the second shaft 2 to be engaged with the first catching jaw 51 of the first catching hole 5. The sphere 7 is installed.

The third shaft 3 has a cylindrical shape having a threaded passage 30 formed therein so as to be screwed with the threaded portion of the second shaft 2 and having open ends.

On the other hand, the upper and lower position sensors (not shown in the figure) corresponding to the highest point and the lowest point of the elevating member (S) is further installed.

That is, the lowest point is when all of the first to third shafts (1 to 3) constituting the elevating member (S) are folded down and folded, and in this state, a lower position sensor is installed to stop the operation of the driving unit (R). do.

In addition, an upper position sensor is installed to stop the operation of the driving unit R even when the first to third axes 1 to 3 reach the highest point when all of the first to third shafts 1 to 3 are raised.

Preferably, the upper and lower position sensors use a conventional limit switch.

The driving unit R is to rotate the first shaft 1 of the elevating member S in a clockwise or counterclockwise direction to elevate and is coupled to a lower end of the first shaft 1. ) And a motor R-2 connected to the speed reducer R-1.

First and second intermediate plates 170 and 180 are further installed between the base 160 and the fixing stand 150, and the first intermediate plate 170 is disposed at the lower end of the second shaft 2, and the second The intermediate plate 120 is disposed at the lower end of the third shaft 3.

The base 160, the first and second intermediate plates 170 and 180, and the fixing stand 150 are further provided with a plurality of guide rods 190 vertically to guide the lifting operation.

In addition, the first housing 110 and the first intermediate plate 170 and the second intermediate plate installed between the base 160 and the first intermediate plate 170 in order to enhance the appearance by not seeing the inner configuration on the outside. Comprising a second housing 120 provided between the 120, and a third housing 130 provided between the second intermediate plate 120 and the fixing table 150, the first to third housing (110 ~ 130) ) Were made different in size so that they were collapsible.

That is, the size is formed in the order of the first enclosure 110 <second enclosure 120 <third enclosure 130.

Hereinafter, the combination and operation of the present invention will be described with reference to FIGS. 3 and 5.

5 is a view showing a state where the electric lifting device coupled with the display device according to the present invention is lowered.

As shown in FIG. 5, the initial state is a state in which the second and third axes 2 and 3 are lowered and folded on the first axis 1 of the elevating member S to have a minimum length.

Then, when the user operates the switch (not shown) and presses the "up" button, the motor R-2 of the driving unit rotates in the forward direction, and the first shaft 1 is rotated through the reducer R-1 subordinate thereto. Rotate clockwise.

Thereafter, the second shaft 2 is gradually raised by the rotation of the first shaft 1, thereby performing the primary ascending operation. At this time, the third shaft 3 is not raised.

Thereafter, when the second shaft 2 is raised to the maximum height, the second locking jaw 62 of the second locking hole 6 and the third locking jaw 53 of the first locking hole 5 therein. By being mutually coupled and integrated, from this time, the 2nd axis | shaft 2 also starts to follow the 1st axis | shaft 1 and will begin to rotate.

Therefore, since the third shaft 3 gradually rises as the second shaft 2 rotates, the secondary raising operation is performed.

When the third shaft 3 is raised and the contact portion (not shown) formed at the lower end of the outer surface is grounded to the upper position sensor, the control unit receives the signal to stop the operation of the driving unit R and all the operations are stopped. Therefore, this time is in the state raised to the highest height.

On the other hand, Figure 3 is a view showing a state in which the electric lifting device coupled to the display device according to the present invention is raised.

Referring to FIG. 3, when the user operates the switch and presses the "down" button, the motor R-2 of the driving unit rotates in the reverse direction, and the first shaft ( 1) and the second shaft 2 are rotated counterclockwise.

Therefore, when the second shaft 2 is lowered and lowered, and the fourth catching jaw 74 of the third catching hole 7 is engaged with the first catching jaw 51 of the first catching hole 5, Thereafter, the first shaft 1 and the second shaft 2 are co-rotated.

Thereafter, the third shaft 3 is lowered by the counterclockwise rotation of the second shaft 2 and the load of the display apparatus 100 installed on the upper fixing stand 150.

Finally, when the contact portion formed on the outer surface of the third shaft (3) is grounded to the lower position sensor, the control unit receives the signal to stop the operation of the drive unit to stop all the operation. Therefore, this time is in a state folded into the lowest position.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that the claims belong to the claims.

1 is a front view of the electric hoisting apparatus combined with the display apparatus according to the present invention.

Figure 2 is a perspective view showing the inner main part of the electric lifting device coupled to the display device according to the present invention.

3 is a cross-sectional view of the combined state of the present invention shown in FIG.

Figure 4 is an exploded perspective view of the "elevating member" in the electric lifting device coupled to the display device according to the present invention.

5 is a view showing a state where the electric lifting device coupled to the display device according to the present invention is lowered.
6 is a view showing an example of a conventional lifting device for a display device.

Explanation of symbols on the main parts of the drawings

1: 1st axis 2: 2nd axis

3: third axis 4: coupling member

5: first catching mouth 6: second catching mouth

7: 3rd latch 20,30: passage

100: display device 110: first enclosure

120: second enclosure 130: third enclosure

150: fixed base 160: base

170: first intermediate plate 180: second intermediate plate

190: guide rod

Claims (5)

Mounting stand 150, the display device 100 is installed, the upper end is connected to the fixing stand 150 and the lower end is mounted to the base 160, the lifting member (S) is adjustable in length by overlapping multiple stages, It is composed of a drive unit (R) provided in the base 160 to elevate the elevating member (S), the elevating member (S) is installed vertically through the base 160, the lower end is the drive unit ( A first shaft (1) connected to R), a second shaft (2) screwed to the upper outer periphery of the first shaft (1), and a screw coupling to the upper outer periphery of the second shaft (2) In the electric lifting device coupled to the display device including a third shaft (3) is installed at the top is fixed to the 150, The first shaft (1) is a rod having a predetermined length is formed with a screw thread on the outer circumferential surface, the lower end is installed through the base 160, the upper end is formed with a first latch (5), The first catching hole 5 is a ring shape having a diameter larger than that of the first shaft 1, and the first and third catching jaws 51 and 53 formed at right angles on upper and lower surfaces thereof are formed to face each other. , The third shaft (3) is an electric lifting device coupled to the display device, characterized in that the threaded passage (30) is formed in the inner side to be screwed with the second shaft (2) and both ends are opened. delete The method of claim 1, The second shaft 2 is a rod having both ends and a predetermined length having a passage 20 formed therein, and a coupling member having the first shaft 1 screwed to an inner lower end of the passage 20. 4) is inserted, the threaded portion 22 is formed on the outer peripheral surface of the top, The coupling member 4 has a screw thread formed on an inner circumferential surface thereof, and a second catching hole 6 having a second catching jaw 62 formed on an upper surface thereof is formed at an upper end thereof. The elevating device coupled to the display device, characterized in that the third engaging opening (7) having a fourth locking jaw (74) is installed on the inner upper end of the passage (20). delete The method of claim 1, The electric lifting device coupled to the display device, characterized in that the upper and lower position sensors are further installed corresponding to the highest and lowest points of the elevating member (S).

Images