Projector and supporting structure thereof

Abstract

A projector and a supporting structure thereof are provided. The projector includes a main body and a supporting structure. The supporting structure is disposed at the main body. The supporting structure includes a sliding element and an elastic element. The sliding element is supported on a plane and can move backward and forward with respect to the main body. The elastic element has a first end and a second end. The first end is coupled to the sliding element, and the second end is coupled to the main body. The elastic element generates a substantially constant elastic force when the elastic element is deformed. As the sliding element moves with respect to the main body, the elastic force balances against the gravity force of the main body, such that the elevational angle of the main body with respect to the plane is changed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A (Prior Art) is a perspective of a conventional projector;

FIG. 1B (Prior Art) is another perspective of a conventional projector;

FIG. 2A is a perspective of a projector according to a first embodiment of the invention;

FIG. 2B is an enlarged diagram of a supporting structure of FIG. 1;

FIG. 2C is an elastic force vs. deformation curve of an elastic element;

FIG. 2D is a perspective showing the supporting structure of the projector is at the lowest height;

FIG. 3 is a perspective of a projector according to a second embodiment of the invention;

FIG. 4 is a side view of a supporting structure of FIG. 3.

Claims

1. A projector, comprising: a main body; anda supporting structure, disposed at the main body, comprising: a sliding element, supported on a plane, capable of moving backward and forward with respect to the main body; andan elastic element having a first end and a second end, wherein the first end is coupled to the sliding element, the second end is coupled to the main body, the elastic element generates a substantially constant elastic force when the elastic element is deformed;as the sliding element moves with respect to the main body, the elevational angle of the main body with respect to the plane is changed.

2. The projector according to claim 1, wherein the projector comprises two supporting structures respectively disposed on two opposite sides of the main body for adjusting the elevational angle and the horizon of the main body.

3. The projector according to claim 1, wherein the supporting structure further comprises: a fixing element fixed on the main body for clipping the second end of the elastic element.

4. The projector according to claim 3, wherein the sliding element is further retained between the fixing element and the main body to avoid the sliding element coming off.

5. The projector according to claim 3, wherein the fixing element is detachably disposed on the main body.

6. The projector according to claim 1, wherein the supporting structure further comprises: an assistant positioning element used for providing a friction force to the sliding element, such that the friction force and the elastic force balance against the gravity force of the main body.

7. The projector according to claim 6, wherein the sliding element has a sliding slot, the assistant positioning element is a screw, one end of the screw penetrates through the sliding slot to be coupled to the main body, and the other end of the screw retains the sliding element to provide the friction force.

8. The projector according to claim 7, wherein the supporting structure further comprises: a guiding bump disposed on the main body and penetrating through the sliding slot, wherein the screw and the guiding bump are coupled to the sliding slot, such that the sliding element moves backward and forward with respect to the main body along a route between the screw and the guiding bump.

9. The projector according to claim 8, wherein the route between the screw and the guiding bump is substantially perpendicular to the plane, such that the sliding element moves upward and downward with respect to the main body along the route between the screw and the guiding bump, and that the elevational angle of the main body with respect to the plane is changed.

10. The projector according to claim 1, further comprising: a limiting element for limiting the range of downward movement of the sliding element.

11. The projector according to claim 10, wherein the sliding element has a first gap and a second gap, the limiting element can be moved to the underneath of the first gap or the second gap with respect to the sliding element for limiting the range of downward movement of the sliding element.

12. A supporting structure used for supporting a device having a main body, wherein the supporting structure comprises: a sliding element supported on a plane and capable of moving backward and forward with respect to the main body;an elastic element having a first end and a second end, wherein the first end is coupled to the sliding element, the second end is coupled to the main body, and the elastic element generates a substantially constant elastic force when the elastic element is deformed; anda fixing element fixed on the main body for clipping the second end of the elastic element;as the sliding element moves with respect to the main body, the elastic force balances against the gravity force of the main body, such that the elevational angle of the main body with respect to the plane is changed.

13. The supporting structure according to claim 12, wherein the sliding element is further retained between the fixing element and the main body to avoid the sliding element coming off.

14. The supporting structure according to claim 12, wherein the fixing element is detachably disposed on the main body.

15. The supporting structure according to claim 12, further comprising: an assistant positioning element used for providing a friction force to the sliding element, such that the friction force and the elastic force balance against the gravity force of the main body.

16. The supporting structure according to claim 15, wherein the sliding element has a sliding slot, the assistant positioning element is a screw, one end of the screw penetrates through the sliding slot to be coupled to the main body, and the other end of the screw retains the sliding element to provide the friction force.

17. The supporting structure according to claim 16, wherein the supporting structure further comprises: a guiding bump disposed on the main body and penetrating through the sliding slot, wherein the screw and the guiding bump are coupled to the sliding slot, such that the sliding element moves backward and forward with respect to the main body along the route between the screw and the guiding bump.

18. The supporting structure according to claim 17, wherein the route between the screw and the guiding bump is substantially perpendicular to the plane, such that the sliding element moves upward and downward with respect to the main body along the route between the screw and the guiding bump, and that the elevational angle of the main body with respect to the plane is changed.

19. The supporting structure according to claim 12, wherein the device comprises a limiting element for limiting the range of downward movement of the sliding element.

20. The supporting structure according to claim 19, wherein the sliding element has a first gap and a second gap, the limiting element can be moved to the underneath of the first gap or the second gap with respect to the sliding element for limiting the range of downward movement of the sliding element.