Elevatable supporting device

Patent metadata

Field	Value
Publication number	US-9976691-B2
Application number	US-201615361205-A
Country	US
Kind code	B2
Filing date	Nov 25, 2016
Priority date	Feb 3, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

An elevatable supporting device for holding a display module which is defined with a normal direction is provided. The elevatable supporting device comprises a frame, at least one rail module, a sliding element, and at least one constant force spring. The rail module includes an outer rail and an inner rail, wherein the outer rail is fastened to the frame and formed with a lateral opening for the inner rail sliding therein. The sliding element is formed with an inner space for the rail module penetrating through. The sliding element is secured to the inner rail so as to slide on the frame. The constant force spring is disposed on the top of the frame and connects to the sliding element at a free end thereof. Thus, the elevatable supporting device is characterized in having a slim structure.

First claim

What is claimed is:

1. An elevatable supporting device for holding a display module which defines a normal direction, the elevatable supporting device comprising:
a frame;
a first rail module, having:
a first outer rail, being fastened to the frame and forming a first opening, the first opening facing toward a first lateral direction with respect to the normal direction; and
a first inner rail, being slidably disposed in the first opening;

a second rail module, having:
a second outer rail, being fastened to the frame and forming a second opening; and
a second inner rail, being slidably disposed in the second opening;

a sliding element, including a central board, a first lateral flange and a second lateral flange to form an inner space for the first rail module and the second rail module penetrating through, the sliding element being fastened to the first inner rail and the second inner rail so as to slide on the frame;
a first constant force spring, being disposed above the first outer rail and having a free end to be fastened to the first lateral flange; and
a second constant force spring, being disposed above the second outer rail and having a free end to be fastened to the second lateral flange.

2. The elevatable supporting device as claimed in claim 1 , wherein the first lateral flange and the second lateral flange extend from two opposite sides of the central board respectively and substantially perpendicular to the central board so that the sliding element substantially has a U-shaped configuration and is fastened to the first inner rail by the first lateral flange, wherein the central board, the first lateral flange and the second lateral flange define the inner space so as to surround the first rail module.

3. The elevatable supporting device as claimed in claim 2 , wherein a direction of an opening of the sliding element is opposite to the normal direction, and the first lateral direction of the first outer rail is perpendicular to the normal direction.

4. The elevatable supporting device as claimed in claim 3 , wherein the first rail module has a first thickness with respect to the normal direction and has a first width with respect to the first lateral direction, and the sliding element has a second thickness with respect to the normal direction, wherein the second thickness is less than the first width, and the second thickness is greater than the first thickness.

5. The elevatable supporting device as claimed in claim 4 , wherein the frame has two platforms, and a first top board and a first bottom board of the first outer rail are fastened to the platforms respectively.

6. The elevatable supporting device as claimed in claim 5 , wherein the second rail module is disposed in the inner space and surrounded by the central board, the first lateral flange and the second lateral flange, wherein the second opening faces toward a second lateral direction with respect to the normal direction, the second lateral direction and the first lateral direction of the first opening are opposite and both substantially perpendicular to the normal direction, and the second inner rail is fastened to the second lateral flange.

7. The elevatable supporting device as claimed in claim 6 , wherein the second rail module has a third thickness with respect to the normal direction and has a second width with respect to the second lateral direction, wherein the second thickness is less than the second width, and the second thickness is greater than the third thickness.

8. The elevatable supporting device as claimed in claim 7 , wherein a second top board and a second bottom board of the second outer rail are fastened to the platforms respectively.

9. The elevatable supporting device as claimed in claim 8 , wherein a first back board of the first outer rail is attached with a second back board of the second outer rail.

10. The elevatable supporting device as claimed in claim 6 , further comprising a frame having a first standing board, a second standing board and a third standing board disposed between the first lateral flange and the second lateral flange, wherein the first standing board is attached with a first back board, the second standing board and the third standing board are connected with two ends of the first standing board and perpendicular to the first standing board, and the third standing board is adjacent to the central board.

11. The elevatable supporting device as claimed in claim 10 , wherein the frame has a back board for the second standing board being fastened thereto.

12. The elevatable supporting device as claimed in claim 11 , further comprising a first friction structure having a plurality of first friction blocks disposed on the first lateral flange and the second lateral flange respectively, the frame further having two forth standing boards connected with two ends of the second standing board, wherein the first friction blocks contact with the forth standing board or the first standing board or the second standing board.

13. The elevatable supporting device as claimed in claim 12 , wherein the sliding element further includes a second friction structure having an adjusting button and a second friction block, wherein the adjusting button is capable of selectively adjusting a normal force on the second friction block against the third standing board.

14. The elevatable supporting device as claimed in claim 13 , wherein the first standing board, the second standing board and the third standing board define a first groove for the first rail module being disposed therein.

15. The elevatable supporting device as claimed in claim 14 , wherein a second back board of the second outer rail is attached on the first standing board, and the first back board of the first outer rail faces toward the second back board of the second outer rail.

16. The elevatable supporting device as claimed in claim 13 , wherein the first standing board, the second standing board and the third standing board define a first groove and a second groove, wherein the first rail module is received in the first groove, and the second rail module is received in the second groove.

17. The elevatable supporting device as claimed in claim 7 , further comprising a receiving element disposed on the platforms, and a first winding portion of the first constant force spring and a second winding portion of the second constant force spring are disposed on the receiving element.

18. The elevatable supporting device as claimed in claim 17 , wherein the first winding portion of the first constant force spring defines a first central axis, the second winding portion of the second constant force spring defines a second central axis, wherein the first central axis and the second central axis are in parallel and perpendicular to the first lateral direction.

19. The elevatable supporting device as claimed in claim 18 , wherein the receiving element has a first receiving recess and a second receiving recess to accommodate the first winding portion and the second winding portion respectively, wherein the first receiving groove and the second receiving groove are at different height so that a projection of the first winding portion projected on the platforms partially overlaps a projection of the second winding portion projected on the platforms.

Assignees

• Syncmold Entpr Corp

Inventors

• Chin Chung-Hsien
• Tsai Chen-Kuei

Classifications

• F16M2200/048

  for balancing translational movement of the undercarriage · CPC title

• F16M11/24

  changeable in height or length of legs, also for transport only, {e.g. by means of tubes screwed into each other}(F16M11/42 takes precedence) · CPC title

• F16M2200/047

  for balancing translational movement of the head · CPC title

• H05K5/0234

  Feet; Stands; Pedestals, e.g. wheels for moving casing on floor · CPC title

• A47B9/02

  with balancing device, e.g. by springs, by weight · CPC title