Hinge device

Patent metadata

Field	Value
Publication number	US-11359760-B2
Application number	US-201916689673-A
Country	US
Kind code	B2
Filing date	Nov 20, 2019
Priority date	Dec 17, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A hinge device for supporting a display device is provided. The hinge device comprises a supporting seat, a shaft, a bearing plate, and an elastic module. The shaft rotatably passes through the supporting seat. The bearing plate is disposed on the shaft, and the display device is disposed on the bearing plate. The elastic module includes a cam and at least one elastic plate. The cam is configured on the shaft, and the cam and the shaft rotate synchronously. A fixed end of the elastic plate is fixed to the supporting seat. The elastic plate has a deformation amount to provide a balance torque to the cam when a free end of the elastic plate abuts against the cam. When an external force is applied on the display device, the bearing plate is actuated to drive the shaft and the cam to rotate to change the deformation amount and the balance torque of the elastic plate. When the external force is removed, the display device can be stopped at once.

First claim

What is claimed is:

1. A hinge device for supporting a display device, the hinge device comprising:
a supporting seat;
a shaft rotatably passing through the supporting seat along an axis;
a bearing plate being disposed on the shaft, rotating along with the shaft relative to the supporting seat, bearing the display device, and being adapted to tilt between a first position and a second position; and
an elastic module including a cam and at least one elastic plate, the cam being configured on the shaft and rotating synchronously with the shaft, the elastic plate extending towards a direction that is not parallel to the axis and having an inflexible section and a flexible section, the inflexible section and the flexible section being connected to each other and defining a fixed end and a free end, lengths of the inflexible section and the flexible section being changeable, the fixed end being fixed to the supporting seat, the free end abutting against the cam optionally, the elastic plate having a deformation amount to provide a balance torque when the elastic plate abutting against the cam;
wherein, when an external force is applied on the display device to adjust a tilt angle, the bearing plate is actuated to drive the shaft to rotate so that the cam rotates synchronously to change the deformation amount and the balance torque of the elastic plate, and when the external force is removed, the display device can be stopped at once at a position between the first position and the second position.

2. The hinge device as claimed in claim 1 , wherein the display device constantly provides a main torque to the shaft, a direction of the balance torque is opposite to a direction of the main torque so that the balance torque countervails the main torque, when the display device and the bearing plate rotate from the first position to the second position, the main torque and the balance torque gradually increase, and when the display device and the bearing plate rotate from the second position to the first position, the main torque and the balance torque gradually decrease.

3. The hinge device as claimed in claim 2 , wherein the cam has a first abutting part and a second abutting part, a distance between the first abutting part and the axis is smaller than a distance between the second abutting part and the axis, when the bearing plate is at the first position, the elastic plate abuts against the first abutting part of the cam, and when the bearing plate is at the second position, the elastic plate abuts against the second abutting part of the cam.

4. The hinge device as claimed in claim 3 , wherein the cam further has a curved surface section between the first abutting part and the second abutting part.

5. The hinge device as claimed in claim 4 , wherein the supporting seat includes a main body and two side plates, the side plates extend outwards from two sides of the main body, and the shaft passes through the side plates.

6. The hinge device as claimed in claim 5 , wherein the supporting seat further includes at least one positioning hole and at least one connecting element, the positioning hole is formed on an upper surface of the main body, the fixed end has a threaded hole, and the connecting element passes through the threaded hole and is tightened in the positioning hole.

7. The hinge device as claimed in claim 6 , wherein the cam has a through hole formed at an axle center of the cam for the shaft passing through.

8. The hinge device as claimed in claim 6 , wherein the cam is a cylinder and has a through hole eccentrically formed on the cam for the shaft passing through.

9. The hinge device as claimed in claim 6 , wherein the cam and the shaft are integrated.

10. The hinge device as claimed in claim 6 , wherein the supporting seat further includes an upper stopper and a lower stopper, when the cam is at the first position, the bearing plate abuts against the upper stopper, and when the cam is at the second position, the bearing plate abuts against the lower stopper.

11. The hinge device as claimed in claim 7 , wherein the elastic module further includes at least one screw hole and at least one abutting element, the screw hole is formed on the cam and connected to the through hole, and the abutting element passes through the screw hole and abuts against the shaft so that the shaft is fixed to the cam, and the cam and the shaft rotates synchronously.

12. The hinge device as claimed in claim 1 , wherein the elastic plate is a leaf spring and has a thickness between 2-10 millimeters.

13. The hinge device as claimed in claim 6 , wherein a number of the at least one elastic plate is larger than or equal to two, the screw hole of at least one of the elastic plates is an elongated hole, the screw hole has a front end adjacent to the shaft and a rear end away from the shaft, and when the corresponding connecting element is screwed at the front end, the corresponding elastic plate does not abut against the cam.

14. The hinge device as claimed in claim 5 , further comprising an adjustment module, wherein the adjustment module is disposed on the supporting seat and optionally presses against different positions of the elastic plate to change the length of the flexible section of the elastic plate.

15. The hinge device as claimed in claim 14 , wherein the adjustment module includes a pressing element optionally moving relative to the elastic plate, and the length of the flexible section of the elastic plate is changed through adjusting a position of the pressing element relative to the elastic plate.

16. The hinge device as claimed in claim 15 , where the adjustment module further includes two sliding slots and at least one securing element, the pressing element has at least one screw hole, the sliding slots are respectively formed on the side plates, the pressing element is movably disposed in the slide slots, and the securing element detachably passes through the screw hole of the pressing element to tighten the elastic plate.

Assignees

• Syncmold Entpr Corp
• Syncmold Enierprise Corp

Inventors

• Huang Chun-Hao
• Yeh Chien-Cheng

Classifications

• F16M11/10 Primary

  around a horizontal axis {(F16M11/12 takes precedence)} · CPC title

• F16F1/26

  Attachments or mountings ({F16F1/182, F16F1/22} B60G11/10 take precedence) · CPC title

• F16F3/023

  composed only of leaf springs · CPC title

• F16M2200/041

  for balancing rotational movement of the head · CPC title

• F16F2230/0005

  Attachment, e.g. to facilitate mounting onto confer adjustability · CPC title