CN109752910B

CN109752910B - Fixing device, projection screen and projection equipment

Info

Publication number: CN109752910B
Application number: CN201711072267.1A
Authority: CN
Inventors: 付锦江; 黄旻; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2017-11-03
Filing date: 2017-11-03
Publication date: 2021-06-08
Anticipated expiration: 2037-11-03
Also published as: WO2019085257A1; CN109752910A

Abstract

The invention provides a fixing device, a projection screen applying the fixing device and projection equipment. Not only convenient fixed, conveniently realize moreover along the ascending position control of direction of height, when being applied to projection screen, can effectively realize the regulation to projection screen position to the realization is to the effective regulation of projection effect.

Description

Fixing device, projection screen and projection equipment

Technical Field

The invention relates to the field of mechanical fixation, in particular to a fixing device, a projection screen using the fixing device and projection equipment.

Background

The fixing device is widely used for hanging a to-be-fixed object on an external fixing surface such as a wall, for example, when a projection screen and a white board which are used as the to-be-fixed object are fixed by the fixing device, the height of the to-be-fixed object cannot be adjusted, the to-be-fixed object cannot be adjusted continuously or the adjustment range is small. For the projection screen, when the height of the screen cannot be adjusted, the height of the projection screen is basically determined after the mounting hole on the wall is determined, and the accuracy of screen positioning depends on the accuracy of the punching position, which brings great problems to the mounting and the use of the screen; when the screen adjustment range is small or continuous adjustment cannot be performed, the positions of the screen and the projection picture are difficult to accurately match, and the position of the projection image and the position of the screen generate deviation, so that the projection effect is seriously influenced.

Therefore, there is a need to provide a new fixing device, a projection screen and a projection apparatus to solve the above problems.

Disclosure of Invention

The invention mainly solves the technical problem of providing a fixing device, a projection screen and projection equipment, and aims to solve the problems that in the prior art, a to-be-fixed object is difficult to mount, the position of a projection image and the position of the screen are deviated, and the projection effect is influenced.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a fixing device, including being used for with the fixed bolster of external stationary plane, set up actuating lever on the fixed bolster and fixing bearing structure on the actuating lever, the fixed bolster includes the main part and certainly the stiff end that the main part extended to both sides buckling, the stiff end is used for laminating mutually and fixing with external stationary plane, the main part is including the roof and the diapire that set up relatively, the actuating lever runs through the roof with the diapire and with the stiff end interval sets up, bearing structure certainly the actuating lever extends to keeping away from external stationary plane direction, bearing structure is used for supporting and treats the fixture, through the removal drive bearing structure of actuating lever removes between roof and diapire.

Preferably, the supporting structure is a special-shaped nut, and comprises a sleeve-arranging part arranged on the driving rod, a supporting plate extending from the sleeve-arranging part to the direction far away from the external fixing surface, and a baffle plate bending and extending from the supporting plate to the top wall.

Preferably, the driving rod further comprises a fixing structure arranged on one side of the top wall far away from the bottom wall and used for limiting the driving rod to move along the axial direction.

Preferably, the fixing structure comprises a fixing plate abutting against one side surface of the top wall far away from the bottom wall and a screw hole extending from the fixing plate, and one end of the driving rod is screwed into the screw hole.

Preferably, the fixing end is provided with a through fixing hole, and the fixing device is fixed on an external fixing surface through a fastener penetrating through the fixing hole.

Preferably, the drive rod is a screw.

In order to solve the above technical problems, the present invention further provides a technical solution: there is provided a projection screen comprising a frame and a screen fixed on the frame, comprising a fixing device as described above, the frame being the object to be fixed, the projection screen comprising fixing rods arranged on the frame, the fixing device supporting the frame by cooperation of the supporting structure and the fixing rods.

Preferably, the fixing bar is disposed in a horizontal direction and slidably disposed on a support structure of the fixing device.

Preferably, the projection screen further comprises a horizontal locking device connected to the frame for limiting the movement of the frame in the horizontal direction.

Preferably, the horizontal locking device comprises a horizontal fixing part and a jackscrew, the horizontal fixing part is used for fixing with an external fixing surface, the jackscrew is matched with the horizontal fixing part, a penetrating threaded hole is formed in the frame, and the jackscrew penetrates through the threaded hole and the horizontal fixing part to be connected to achieve the purpose of being fixed with the frame in a locking mode.

Preferably, the horizontal fixing part is provided with a waist-shaped hole, and the horizontal fixing part is fixedly connected with the external fixing surface through a fastener penetrating through the waist-shaped hole.

Preferably, the frame comprises an outer frame and an inner frame which are oppositely arranged, the fixing rod is arranged at the upper edge of the inner frame, and the fixing devices matched with the fixing rod are arranged into at least two.

Preferably, the horizontal locking devices include at least two horizontal locking devices, which are respectively disposed on two sides of the projection screen along the horizontal direction and are locked and fixed with the outer frame.

In order to solve the above technical problems, the present invention further provides a technical solution: there is provided a projection device comprising a projection screen and a projection screen as described in any of the above.

The invention has the beneficial effects that: the fixing device comprises a fixing support used for being fixed with an external fixing surface, a driving rod arranged on the fixing support and a supporting structure fixed on the driving rod, wherein the supporting structure is used for supporting and fixing a to-be-fixed object, and the height position of the supporting structure can be continuously adjusted through the rotation of the driving rod. Not only convenient fixed, conveniently realize moreover along the ascending position control of direction of height, when being applied to projection screen, can effectively realize the regulation to projection screen position to the realization is to the effective regulation of projection effect.

Drawings

FIG. 1 is a schematic view of the construction of the fastening device of the present invention;

FIG. 2 is a schematic diagram of a projection screen according to the present invention;

FIG. 3 is an enlarged view of portion A shown in FIG. 2;

FIG. 4 is a cross-sectional view of the portion shown in FIG. 3;

FIG. 5 is a schematic view of the combination of the portion shown in FIG. 4 and the external fixation surface;

FIG. 6 is an enlarged view of portion B shown in FIG. 2;

fig. 7 is an assembly view of the horizontal locking device of the projection screen of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a fixing device and a projection screen and equipment applying the fixing device, and aims to solve the technical problems that in the prior art, when a projection screen and a white board wait fixture are hung on an external fixed surface of a wall body and the like, the installation is difficult, the position generates deviation, and the use effect is influenced.

As shown in fig. 1, the fixing device 100 of the present invention includes a fixing bracket 1, a driving rod 2, a supporting structure 3 and a fixing structure 4.

The fixing bracket 1 includes a main body 11 and a fixing end 12 bent and extended from the main body 11 to both sides. The fixed end 12 is used for being attached to and fixed by the external fixed surface 5. The external fixing surface 5 may be a wall or other fixing surface structure for installation and fixation.

Specifically, the fixing end 12 is provided with a through fixing hole 121, and the fixing device 100 is fixed to the external fixing surface 5 by a fastener passing through the fixing hole 121. Specifically, the fastening member may be a fastening screw, that is, when the fixing device 100 is used, the fixing end 12 abuts against the external fixing surface 5, and the fastening screw is driven into a wall or other external fixing surface through the fixing hole 121, so as to fix the fixing device 100.

The main body 11 includes a top wall 111, a bottom wall 112 and a connecting wall 113 connecting the top wall 111 and the bottom wall 112, which are oppositely spaced apart. The top wall 111, the bottom wall 112, the connecting wall 113 and the two fixing ends 12 define a receiving space therebetween. The driving lever 2 penetrates the top wall 111 and the bottom wall 112 and is accommodated in the accommodating space, i.e., is spaced from the connecting wall 113 and the fixed end 12. The drive rod 2 is the both sides all processes the screwed screw rod or one side processes the screwed bolt, specifically in this embodiment, and drive rod 2 is the bolt, corresponds the screw hole that is provided with the cooperation screw rod on roof 111, the diapire 112 to realize the connection of drive rod 2.

The connecting wall 113 is provided with a hollow portion 1131 corresponding to the driving rod 2, specifically, the hollow portion 1131 is a through hole provided on the connecting wall 113, and the supporting structure 3 extends from the driving rod 2 to a direction away from the external fixing surface 5 and passes through the hollow portion 1131. The supporting structure 3 is contacted with the object to be fixed on one side far away from the accommodating space and supports the object to be fixed. Of course, this is only a preferred embodiment, and in an alternative embodiment, the connecting wall 113 may not be provided, and the top wall 111 and the bottom wall 112 may be connected to the fixed end 12 to form a ring-shaped frame structure with both sides penetrating, that is, the hollow portion 1131 is expanded to the side of the fixed end 12, and the support structure 3 directly extends out of the accommodating space. The supporting structure 3 is used for supporting and fixing objects to be fixed, and the height position of the supporting structure 3 can be continuously adjusted through rotation of the driving rod 2.

Specifically, in the present embodiment, the supporting structure 3 is a special-shaped nut, that is, includes a sleeve portion 31 sleeved on the driving rod 2, a supporting plate 32 extending from the sleeve portion 31 in a direction away from the external fixing surface 5, and a baffle 33 extending from the supporting plate 32 in a bending manner in a direction of the top wall 111. The fixed connection that portion 31 and actuating lever 2 can be as an organic whole is established to the cover, also can be split type structure, specifically in this embodiment, is provided with the screw thread for the internal surface of portion 31 is established to the cover, sets up in the assorted screw thread with it on the actuating lever 2, and portion 31 is established to the cover and is in the same place through threaded connection with actuating lever 2.

The fixed structure 4 is arranged on the side of the top wall 111 away from the bottom wall 112 for limiting the displacement of the driving rod in the axial direction. The fixing structure 4 includes a fixing plate 41 abutting on an outer surface of the top wall 111 on a side away from the bottom wall 112 and a fixing hole 42 extending from the fixing plate 41, and the fixing structure 4 is connected to the top wall 111 by a screw on the fixing plate 41. One end of the driving rod 2 is screwed into the fixing hole 42. Specifically, in the present embodiment, the bolt as the drive rod 2 includes a head and a screw, the drive rod passes through the fixing hole 42, and the head is abutted and restrained by both side walls of the fixing hole 42, thereby restricting the axial movement of the drive rod. Thus, during operation, the driving rod 2 rotates, and the screw thread on the sleeve portion 31 is driven by the screw thread on the driving rod 2 matching with the screw thread on the driving rod 2 to move on the axis of the driving rod 2.

The novel fixing device provided in the present embodiment is not limited to a specific application field, and may be applied to industrial production, daily necessities, and the fixing device of the present invention may be used as long as it is required to perform fixing and adjustment in the height direction.

An application of the fixing device of the present invention, namely, to an optical apparatus, particularly, to a projection screen and a projection apparatus will be specifically described below as an example.

Referring to fig. 2, a projection screen applied to a projection apparatus provided by the present invention includes a frame 300, a screen fixed on the frame 300, and the fixing device 100 described above. In this embodiment, the frame 300 is a rectangular frame including an upper edge, a lower edge, and side edges. The fixing device 100 is fixed on the upper edge to realize the fixing and the adjustment of the projection screen in the height direction.

Preferably, the projection screen further includes a horizontal locking device 200 for limiting the movement of the projection screen in the horizontal direction. The horizontal locking means 200 is provided on the side edge for achieving fixation in the horizontal direction. Of course, this is only a preferred embodiment, and in alternative embodiments, the frame 300 may have other shapes, such as a square structure, a polygonal structure, or an irregular structure, and the principle is consistent, so long as the function of limiting displacement in two directions can be achieved.

The frame 300 includes an outer frame 301 and an inner frame 302 disposed opposite to each other. As shown in fig. 3 and 4, on the frame 300, in particular, in the present embodiment, in order to provide the fixing rod 3021 extending in the horizontal direction on the inner frame 302, the fixing device 100 supports the projection screen through the fixing rod 3021 and drives the projection screen to adjust the position in the height direction. In particular, in the present embodiment, the fixing rod 3021 is a sliding rod slidably disposed on the support structure 3 of the fixing apparatus 100. That is, a slot is formed between the supporting plate 32 and the baffle 33 of the supporting frame 3, and the fixing rod 3021 is clamped in the slot and can slide along the horizontal direction.

Referring to fig. 5, the fixing device 100 is fixed on the external fixing surface 5 by a fastener, and the projection screen is clamped in the clamping groove by a fixing rod 3021, and finds the balance position of the projection screen by moving left and right. The fixing rod 3021 is not necessarily a rod-shaped structure, and in the present embodiment, for example, it is a semicircular structure extending from the inner frame 302. In fact, the fixing rod 3021 may have other structures as long as it can be fixed on the fixing device 100 and can slide in the horizontal direction. In this embodiment, the fixing rod 3021 is integrally formed with the inner frame 302, but in an alternative embodiment, it may be a separate structure, i.e., a detachable rod-shaped structure fixed on the inner frame 302. In alternative embodiments, the horizontal locking device 200 may not be provided, and accordingly, the fixing rod 3021 is fixed on the fixing device 100 without sliding in the horizontal direction, which may achieve the object of the present invention.

In the present embodiment, two fixing devices 100 are provided, each being provided on an upper edge of the inner frame 301. And the two fixtures 100 are symmetrically disposed along the center of gravity of the projection screen. Of course, the number of the fixing devices 100 is not limited thereto, and a plurality of fixing devices may be provided to be distributed over the upper edge of the inner frame 302. At least two horizontal locking devices 200 are respectively arranged at two sides of the projection screen along the horizontal direction and are locked and fixed with the outer frame 301.

As shown in fig. 6 and 7, the horizontal locking device 200 includes a horizontal fixing portion 9 for fixing with the external fixing surface 5 and a jack screw 7 abutting against the horizontal fixing portion 9, and the frame 300 is provided with a threaded hole 8 therethrough, and in this embodiment, the threaded hole 8 is provided on the outer frame 301. The jackscrew 7 passes through the threaded hole 8 and is connected with the horizontal fixing part 9, so that the locking and fixing of the projection screen are realized. Wherein the horizontal fixing part 9 is fixedly connected with the external fixing surface 5 through a fastener. Specifically, a waist-shaped hole is formed in the horizontal fixing portion 9, and a fastening piece penetrates through the waist-shaped hole to fix the horizontal fixing portion 9 and the external fixing surface 5.

When the projection screen is installed, the fixing device 100 is fixed, the projection screen is fixed on the fixing device 100, the center of gravity is found, the supporting structure 3 and the fixing rod 3021 are driven by the rotation of the driving rod 2 of the fixing device 100, and therefore the height position of the projection screen is continuously adjustable. Further, the horizontal locking device 200 is used to realize the positioning of the projection screen in the horizontal direction. Thereby completing the position adjustment of the projection screen.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fixing device is characterized by comprising a fixing support, a driving rod and a supporting structure, wherein the fixing support is used for being fixed with an external fixing surface, the driving rod is arranged on the fixing support, the supporting structure is fixed on the driving rod, the fixing support comprises a main body part and a fixing end, the fixing end is bent and extended from the main body part to two sides and is used for being attached to and fixed with the external fixing surface, the main body part comprises a top wall and a bottom wall which are oppositely arranged, the driving rod penetrates through the top wall and the bottom wall and is arranged at intervals with the fixing end, the supporting structure is extended from the driving rod to the direction far away from the external fixing surface and is used for supporting a to-be-fixed object, and the supporting structure is driven to move; the supporting structure comprises a sleeving part sleeved on the driving rod, a supporting plate extending from the sleeving part to the direction far away from the external fixing surface and a baffle plate bending and extending from the supporting plate to the top wall direction; the fixing device also comprises a fixing structure which is arranged on one side of the top wall far away from the bottom wall and is used for limiting the driving rod to move along the axial direction.

2. The fixture according to claim 1, wherein the support structure is a profile nut.

3. The fastening device of claim 1, wherein the fastening structure includes a fastening plate abutting against a side surface of the top wall remote from the bottom wall and a threaded hole extending from the fastening plate, and one end of the driving rod is screwed into the threaded hole.

4. The fixing device of claim 1, wherein the fixing end is provided with a fixing hole therethrough, and the fixing device is fixed to an external fixing surface by a fastening member passing through the fixing hole.

5. The fixture of claim 1, wherein the drive rod is a screw.

6. A projection screen comprising a frame and a screen secured to the frame, comprising a securing device as claimed in any one of claims 1 to 5, the frame being the object to be secured, the projection screen comprising securing rods provided on the frame, the securing device supporting the frame by engagement of the support structure with the securing rods.

7. The projection screen of claim 6 wherein the fixed rods are horizontally disposed and slidably disposed on a support structure of the fixture.

8. The projection screen of claim 7 further comprising a horizontal lock coupled to the frame for limiting movement of the frame in a horizontal direction.

9. The projection screen of claim 8, wherein the horizontal locking device comprises a horizontal fixing portion for fixing with an external fixing surface and a jackscrew matched with the horizontal fixing portion, a threaded hole is formed in the frame in a penetrating manner, and the jackscrew penetrates through the threaded hole to be connected with the horizontal fixing portion to realize locking and fixing with the frame.

10. The projection screen of claim 9, wherein the horizontal fixing portion is provided with a waist-shaped hole, and the horizontal fixing portion is fixedly connected with the external fixing surface through a fastener penetrating through the waist-shaped hole.

11. The projection screen of claim 10 wherein the frame comprises an outer frame and an inner frame disposed opposite each other, the fixing bars are disposed at an upper edge of the inner frame, and the fixing means engaged with the fixing bars are disposed in at least two.

12. The projection screen of claim 11 wherein the horizontal locking devices comprise at least two horizontal locking devices, each of the horizontal locking devices is disposed on each side of the projection screen in the horizontal direction and is locked and fixed to the outer frame.

13. A projection device comprising a projection screen and a projection screen as claimed in any one of claims 6 to 10.