Elevation adjusting mechanism and display device using the same
An elevation adjusting mechanism used for ascending or descending a monitor includes a base, a first thread bushing, a second thread bushing, a guiding bushing and a second gear. The first thread bushing including a first gear is movably connected to the base. The second thread busing is connected to the first thread busing. One end of the first thread bushing is contained in the second thread bushing. The monitor is disposed on the second thread busing. The guiding bushing is fixed at the base and covers the second thread bushing, so that the second thread bushing only moves along an elevating direction. The second gear is movably connected to the guiding busing and meshes with the first gear. When the second gear is rotated and drives the first thread bushing to rotate, the second thread busing moves along the elevating direction to ascend or descend the monitor.
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This application claims the benefit of Taiwan application Serial No. 96114696, filed Apr. 25, 2007, the subject matter of which is incorporated herein by reference.
BACKGROUND OF THE INVENTION1. Field of the Invention
The invention relates in general to an elevation adjusting mechanism and a display device using the same, and more particularly to an elevation adjusting mechanism for ascending or descending a monitor and a display device using the same.
2. Description of the Related Art
Monitors are widely used electronic products nowadays. Generally speaking, a monitor is disposed according to different requirements, such as the space arrangement or a user's preference. In order to satisfy the different requirements, an elevation adjusting mechanism for ascending or descending the monitor is applied.
Several types of the elevation adjusting mechanisms are applied to adjust the height of the monitor. The elevation adjusting mechanisms are not only used for ascending or descending the monitor but the elevation adjusting mechanisms are also used for supporting the monitor. Frames and constant force springs are usually used in the elevation adjusting mechanisms for adjusting the elevation of the monitor.
However, the frames of the elevation adjusting mechanisms are usually made of steel electrogalvanized coldrolled coil (SECC), which results in high manufacturing cost. Furthermore, the constant force springs are expensive and need long time to manufacture.
SUMMARY OF THE INVENTIONThe invention is directed to an elevation adjusting mechanism and a display device using the same. A first thread bushing, a second thread bushing and a guiding bushing cooperate with one another for ascending or descending a monitor.
According to a first aspect of the present invention, an elevation adjusting mechanism for ascending or descending a monitor is provided. The elevation adjusting mechanism includes a base, a first thread bushing, a second thread bushing, a guiding bushing and a second gear. The first thread bushing is movably connected to the base and includes a first gear. The second thread bushing is connected to the first thread bushing. One end of the first thread bushing is contained in the second thread bushing. The monitor is disposed on the second thread bushing. The guiding bushing is fixed at the base and covers the second thread bushing, so that the second thread bushing only moves along an elevating direction. The second gear is movably connected to the guiding bushing and meshes with the first gear. When the second gear is rotated and drives the first thread bushing to rotate, the second thread bushing moves along the elevating direction to ascend or descend the monitor.
According to a second aspect of the present invention, a display device is provided. The display device includes a monitor and an elevation adjusting mechanism. The elevation adjusting mechanism is for ascending or descending the monitor. The elevation adjusting mechanism includes a base, a first thread bushing, a second thread bushing, a guiding bushing and a second gear. The first thread bushing is movably connected to the base and includes a first gear. The second thread bushing is connected to the first thread bushing. One end of the first thread bushing is contained in the second thread bushing. The monitor is disposed on the second thread bushing. The guiding bushing is fixed at the base and covers the second thread bushing, so that the second thread bushing only moves along an elevating direction. The second gear is movably connected to the guiding bushing and meshes the first gear. When the second gear is rotated and drives the first thread bushing to rotate, the second thread bushing moves along the elevating direction to ascend or descend the monitor.
The invention will become apparent from the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings.
Referring to
Referring to both
As shown in
The guiding bushing 500 is fixed at the base 200. The guiding bushing 500 covers the second thread bushing 400, so that the second thread bushing 400 only moves along an elevating direction D1. The second gear 620 is movably connected to the guiding bushing 500 and meshes with the first gear 320. When the second gear 620 is rotated and drives the first thread bushing 300 to rotate, the second thread bushing 400 moves along the elevating direction D1 to ascend or descend the monitor 800.
As shown in
The arrangement and the operation of the components of the elevation adjusting mechanism 100 are illustrated in details as follows. As shown in
Referring to
Referring to
The handle 650 disposed on the same axis with the second gear 620 is used for driving the second gear 620 to rotate. A user can easily hold and rotate the handle 650 for driving the second gear 620 to rotate. Furthermore, the containing portion 230 has a recess 232. As shown in
As stated above, the first gear 320 is a part of the first thread bushing 300 and meshes with the second gear 620. Therefore, when the second gear 620 rotates, the first gear 320 and the first thread bushing 300 are driven to rotate. Meanwhile, the first thread bushing 300 moves within the recess 232.
Then, as shown in
Referring to
The number of the guiding ribs 540 corresponds to the number of the guiding grooves 440. Although the guiding bushing 500 and the second thread bushing 400 respectively include several guiding ribs 540 (as result of the viewing angle, only one guiding rib 540 is shown in
Moreover, as shown in
The first thread bushing 300, the second thread bushing 400 and the guiding bushing 500 are preferably made of plastic to reduce the manufacturing cost and time.
The elevation adjusting mechanism and the display device using the same according to the above embodiment of the present invention are used for ascending or descending the monitor. The first thread bushing, the second thread bushing and the guiding bushing cooperate with one another for adjusting the elevation of the monitor. Furthermore, the first gear, the second gear and the handle are disposed at the elevation adjusting mechanism, so that a user can easily adjust the elevation of the monitor. Because the components of the elevation adjusting mechanism, such as the first thread bushing, the second thread bushing and the guiding bushing, can be made of plastic, the manufacturing cost and time of the elevation adjusting mechanism are reduced.
While the invention has been described by way of example and in terms of a preferred embodiment, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
Claims
1. An elevation adjusting mechanism for ascending or descend a monitor, comprising:
- a base;
- a first thread bushing movably connected to the base and comprising a first gear;
- a second thread bushing connected to the first thread bushing, wherein one end of the first thread bushing is contained in the second thread bushing, and the monitor is disposed on the second thread bushing;
- a guiding bushing fixed at the base and covering the second thread bushing, so that the second thread bushing only moves along an elevating direction; and
- a second gear movably connected to the guiding bushing and meshing with the first gear, wherein when the second gear is rotated and drives the first thread bushing to rotate, the second thread bushing moves along the elevating direction to ascend or descent the monitor.
2. The elevation adjusting mechanism according to claim 1, wherein the base comprises:
- a weight portion disposed at a side of the base for counterbalancing the weight of the monitor; and
- a containing portion disposed relatively to and coupled to the weight portion, wherein the containing portion has a recess and the first thread bushing rotates within the recess.
3. The elevation adjusting mechanism according to claim 1, further comprising:
- a buffer spring surrounding a buffer positioning shaft of the first thread bushing for supporting the monitor.
4. The elevation adjusting mechanism according to claim 3, wherein the buffer spring is substantially compressed.
5. The elevation adjusting mechanism according to claim 1, wherein the guiding bushing has at least one guiding rib disposed on an inner wall of the guiding bushing, and the second thread bushing has at least one guiding groove positioned on an outer wall of the second thread bushing for cooperating with the guiding rib, so that the second thread bushing only moves along the elevating direction.
6. The elevation adjusting mechanism according to claim 5, wherein one end of the guiding groove has a side wall for preventing the second thread bushing from separating from the guiding bushing when elevating.
7. The elevation adjusting mechanism according to claim 5, wherein the guiding bushing has a plurality of guiding ribs, the second thread bushing has a plurality of guiding grooves, and the number of the guiding grooves corresponds to the number of the guiding ribs.
8. The elevation adjusting mechanism according to claim 1, wherein the guiding bushing is composed of two cases, the cases have at least one hook and at least one groove respectively, the hook is disposed with respect to the groove, and the hook is used for inserting into the groove so as to combine the cases.
9. The elevation adjusting mechanism according to claim 1, further comprising a handle, wherein the handle disposed on the same axis with the second gear is used for driving the second gear to rotate.
10. The elevation adjusting mechanism according to claim 9, wherein the guiding bushing has a handle receiver positioned at an outer wall of the guiding bushing, wherein the guiding bushing is used for containing the handle.
11. The elevation adjusting mechanism according to claim 1, further comprising:
- a rotation mechanism disposed on the second thread bushing and coupled to a back side of the monitor, wherein the rotation mechanism is used for adjusting an inclination angle of the monitor.
12. The elevation adjusting mechanism according to claim 1, wherein the first thread bushing has an external thread surface, the second thread bushing has an internal thread surface, and the external thread surface is connected to the internal thread surface.
13. A display device, comprising:
- a monitor; and
- an elevation adjusting mechanism for ascending or descending the monitor, the elevation adjusting mechanism as claimed in claim 1.
Type: Application
Filed: Apr 23, 2008
Publication Date: Oct 30, 2008
Applicant: Qisda Corporation (Taoyuan)
Inventor: Hui Bi (Suzhou)
Application Number: 12/081,875
International Classification: A47F 5/00 (20060101);