CN112305846B - Projection screen mounting device and use method thereof - Google Patents
Projection screen mounting device and use method thereof Download PDFInfo
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- CN112305846B CN112305846B CN201910671157.XA CN201910671157A CN112305846B CN 112305846 B CN112305846 B CN 112305846B CN 201910671157 A CN201910671157 A CN 201910671157A CN 112305846 B CN112305846 B CN 112305846B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000712 assembly Effects 0.000 claims 4
- 238000000429 assembly Methods 0.000 claims 4
- 238000009434 installation Methods 0.000 abstract description 23
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 15
- 238000010168 coupling process Methods 0.000 description 15
- 238000005859 coupling reaction Methods 0.000 description 15
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
A projection screen mounting apparatus and method of use thereof for mounting and securing a projection screen, the projection screen mounting apparatus comprising: a corner connector secured to an edge of the projection screen; a center fixing plate disposed at the center of the rear surface of the projection screen; wherein, the angle connecting piece is connected with the center fixing plate through an elastic connecting piece. The invention provides the projection screen installation device comprising the corner connecting piece, the elastic connecting piece and the central fixing plate and the use method thereof, so that a user can install the projection screen by adopting fewer components, and the operation is simple and labor-saving during installation; and the projection screen mounting device can be combined, disassembled and assembled to be favorable for packaging and transportation, so that the use experience of a user is optimized while the flatness of the projection screen is ensured.
Description
Technical Field
The invention relates to a projection screen mounting device and a using method thereof, belonging to the technical field of projection screen manufacturing.
Background
At present, a projection screen of a laser projection television has various installation modes according to different materials.
For larger area hard screens, such as 100 inch screens, it is often necessary to attach the screens to a flat sheet of aluminum honeycomb or other metal, and package the whole for shipment. The projection screen with the structure has a large volume, so that the projection screen is inconvenient to transport and install, and even cannot enter an elevator of a high-rise residence.
For soft curtains like hot melt PVC (polyvinyl chloride) curtains, one way of installation is to mount the soft curtain directly on a lifting reel, using a hanging installation, but this installation does not guarantee the flatness of the screen. The other mode is to wrap a glass fiber rod in two ends of the soft screen through a fusion technology, then to stretch the soft screen around the spring behind the screen frame, and the mode maintains the flatness of the screen, but the mode cannot be applied to a PET (polyethylene terephthalate) screen with hardness, and in addition, the spring is used for installing more accessories, so that the installation is complicated and the difficulty is high.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and provides a projection screen installation device and a use method thereof, wherein the projection screen installation device comprises an angle connecting piece, an elastic connecting piece and a central fixing plate and the use method thereof are provided, so that a user can install a projection screen by adopting fewer components, and the operation is simple and labor-saving during installation; and the projection screen mounting device can be combined, disassembled and assembled to be favorable for packaging and transportation, so that the use experience of a user is optimized while the flatness of the projection screen is ensured.
The technical problems to be solved by the invention are realized by the following technical scheme:
the invention provides a projection screen mounting device, which is used for mounting and fixing a projection screen, and comprises:
a corner connector secured to an edge of the projection screen;
a center fixing plate disposed at the center of the rear surface of the projection screen;
wherein, the angle connecting piece is connected with the center fixing plate through an elastic connecting piece.
In order to prevent deformation of the projection screen, the elastic connection member is in a compressed state after the projection screen is mounted and fixed.
For easy to assemble, be equipped with spring coupling portion on the center fixed plate, spring coupling portion's quantity is a plurality of, evenly sets up the outward flange at the center fixed plate, spring coupling portion contains the hinge assembly, the rotatable connection of elastic connection piece through the hinge assembly is on the center fixed plate.
In order to fix the relative position of the elastic connecting piece and the central fixing plate, a spring fixing part is further arranged on the spring connecting part.
Preferably, the spring fixing part is a semicircular buckle, and an opening of the semicircular buckle is smaller than the diameter of the elastic connecting piece.
The corner connector is provided with: a spring connection hole for connecting the elastic connection member; the wall-hung mounting hole is used for connecting a wall connecting piece arranged on a wall; and a screen fixing hole for fixing the corner connector and the projection screen together.
In order to realize the connection of elastic connection piece and angle connection piece, be equipped with on the one end of elastic connection piece and be used for connecting the coupling assembling of angle connection piece, coupling assembling with on the angle connection piece the spring connecting hole corresponds the setting.
Preferably, the connection assembly comprises a spherical stop having a diameter greater than the diameter of the spring connection aperture.
Preferably, the connection assembly comprises an ellipsoidal stop having a minor axis diameter greater than the diameter of the spring connection aperture.
Preferably, the connection assembly comprises a stop ring having a diameter greater than the diameter of the spring connection hole and maintained at a distance from the end of the elastic connection member.
In order to prevent the elastic connecting piece from being separated from the corner connecting piece, the connecting assembly further comprises an end plug, the diameter of the end plug is larger than that of the spring connecting hole, and the end plug is arranged at the tail end of the elastic connecting piece, so that the corner connecting piece is clamped between the baffle ring and the end plug.
Preferably, the corner connector is provided with a plurality of screen fixing holes on the bottom surface close to the projection screen, the bottom surface extends to a direction far away from the projection screen to form a side surface provided with a spring connecting hole, and the side surface extends along a direction parallel to the projection screen to form a top surface provided with a wall-mounted mounting hole.
Preferably, the corner connector and the projection screen are fixed by riveting.
To facilitate fine tuning of the position of the projection screen, the wall-mounted mounting holes are generally key-shaped, comprising a circular hole and a bar-shaped hole connected, wherein the diameter of the circular hole is greater than the width of the bar-shaped hole.
Preferably, the elastic connection comprises a coil spring or a gas spring.
For ease of installation, the projection of the resilient connecting element onto the projection screen is collinear with the diagonal of the projection screen.
In order to ensure sufficient mechanical strength, the projection screen mounting device further comprises a screen outer frame, and the screen outer frame is of a special-shaped column structure.
Preferably, the corner connector is further provided with a screen frame fixing hole for fixing the screen frame, and the screen frame and the corner connector are arranged in a coplanar manner.
In order to adjust the verticality of the projection screen, the projection screen mounting device further comprises a telescopic wall connecting piece, wherein one end of the wall connecting piece is fixed on a wall, and the other end of the wall connecting piece is connected with the corner connecting piece.
Preferably, the wall connecting piece comprises a rotating shaft and a fixed shaft which are connected through threads, and one end of the fixed shaft, which is far away from the rotating shaft, is a nail part for fixing the wall connecting piece on a wall; one end of the rotating shaft, which is far away from the fixed shaft, is provided with a boss part which is used for being connected with the corner connecting piece.
The invention also provides a using method of the projection screen mounting device, the projection screen mounting device comprises an angle connecting piece, a center fixing plate and an elastic connecting piece, and the using method comprises the following steps:
s10: unfolding the projection screen, and mounting the corner connectors at the edges of the projection screen;
s20: rotatably connecting the elastic connecting piece to the central fixing plate;
s30: placing the central fixing plate above the center of the projection screen, and inserting the elastic connecting piece into the spring connecting hole on the corner connecting piece;
s40: the central fixing plate is pushed to the direction of the projection screen, so that the surface of the projection screen is flat through the support of the elastic connecting piece.
In summary, the present invention provides a projection screen installation device including an angle connector, an elastic connector and a central fixing plate and a method for using the same, so that a user can install a projection screen with fewer components, and the installation is easy and labor-saving; and the projection screen mounting device can be combined, disassembled and assembled to be favorable for packaging and transportation, so that the use experience of a user is optimized while the flatness of the projection screen is ensured.
The technical scheme of the invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view of a projection screen mounting apparatus according to the present invention;
FIG. 2a is a schematic view of the corner connector of the present invention;
FIG. 2b is a schematic illustration of the connection of an embodiment of the elastic connector with an angle connector according to the present invention;
FIG. 2c is a schematic view of another embodiment of the elastic connector of the present invention connected to an angle connector;
FIG. 2d is a schematic view of a connection between an elastic connector and an angle connector according to another embodiment of the present invention;
FIG. 3 is a schematic view of a semicircular buckle according to the present invention;
FIG. 4 is a partial schematic view of a screen frame according to the present invention;
FIG. 5a is a cross-sectional view of an embodiment of the retractable wall connector of the present invention;
FIG. 5b is a cross-sectional view of another embodiment of the retractable wall connector of the present invention;
FIG. 6 is a schematic view of the mounting of the corner connector of the present invention on a projection screen;
FIG. 7 is a schematic view of the resilient connecting element of the present invention as it is inserted into the corner connecting element;
fig. 8 is a top view of fig. 7.
Detailed Description
Fig. 1 is a schematic view of a projection screen mounting apparatus according to the present invention. As shown in fig. 1, the present invention provides a projection screen mounting apparatus for mounting and fixing a projection screen 100, which includes an angle connector 10, an elastic connector 20, and a center fixing plate 30. The corner connector 10 is secured to an edge of the projection screen 100. The center fixing plate 30 is disposed at the center of the rear surface (i.e., the surface that does not receive the projection light) of the projection screen 100, and the corner connector 10 is connected to the center fixing plate 30 by the elastic connector 20. Wherein, for example, when the projection screen is rectangular, the number of the corner connectors 10 is 4, which are respectively located at four corners of the projection screen 100, or the number of the corner connectors 10 is 8, wherein 4 are respectively located at four corners of the projection screen 100 and the other 4 are respectively located at centers of four sides of the projection screen 100; or the number of said corner connectors 10 is 4 or 6 when the projection screen is circular, which are evenly distributed along the circumferential edge of the projection screen 100, the above examples do not limit the scope of the invention.
When the projection screen mounting apparatus is mounted on the projection screen 100, the projection screen 100 ensures its flatness by means of the elastic connection members 20. Specifically, the elastic force provided by the elastic connection member 20 makes the corner connection members 10 at four corners of the projection screen 100 move away from the central fixing plate 30, so as to drive the projection screen 100 to spread around, so as to ensure the flatness of the projection screen 100, and make the projection screen 100 lie on a plane. It should be noted that, when the projection screen 100 is installed and fixed, the elastic connection member 20 may be in a compressed state or a normal (uncompressed) state, so long as it can ensure that the elastic connection member 20 is deformed when the projection screen 100 is deformed, and provide an elastic force for moving the corner connection member 10 away from the center fixing plate 30, specifically, when the elastic connection member 20 is in a normal (uncompressed) state, it is just in a state of not being deformed, and if the expanded projection screen 100 is contracted or deformed, the elastic connection member 20 will be deformed, and at this time, the elastic connection member 20 will generate a reaction force to prevent the projection screen 100 from being contracted or deformed, so that the projection screen 100 is kept in the expanded state all the time.
Specifically, the central fixing plate 30 is provided with a spring connection portion for connecting the elastic connection member 20, and the elastic connection member 20 is rotatably connected to the central fixing plate 30 through the spring connection portion. The number of the spring connection parts is plural, and they are uniformly disposed at the outer edge of the center fixing plate 30. For example, when the center fixing plate 30 is square, the number of the spring connecting portions is 4, which are provided at four corners of the center fixing plate 30; when the central fixing plate 30 is polygonal, the number of the spring connecting parts is the same as that of the sides of the polygon, and a spring connecting part is arranged at the center of each side of the central fixing plate 30; or when the center fixing plate 30 is circular, the plurality of spring connection parts are uniformly provided at the outer circumference of the center fixing plate 30. The invention is not limited thereto.
Specifically, the spring connection portion includes a hinge assembly, the elastic connection member 20 is rotatably connected to the central fixing plate 30 through the hinge assembly, preferably, for installing the projection screen installation device conveniently, the hinge axis of the hinge assembly is parallel to the plane of the projection screen 100, that is, the plane of the elastic connection member 20 when rotated is perpendicular to the plane of the projection screen 100. Of course, the relative position of the hinge axis to the projection screen 100 may also be varied by those skilled in the art depending on the circumstances, i.e., the hinge axis is not parallel to the plane of the projection screen 100. Alternatively, the spring connection comprises a ball and socket assembly, and the elastic connection member 20 is rotatably connected to the central fixing plate 30 through the ball and socket assembly. The present invention is not limited to the specific structure of the spring coupling portion, and those skilled in the art may also adopt other existing structures to achieve the rotatable coupling of the elastic coupling member 20 and the center fixing plate 30.
Fig. 2a is a schematic structural view of the corner connector of the present invention. As shown in fig. 2a, the corner connector 10 is provided with a spring connection hole 11, a wall-mounted mounting hole 12 and a screen fixing hole 13. The spring coupling hole 11 is used to couple the elastic coupling member 20. The wall-mounted mounting hole 12 is used to connect the wall-connecting member 40 provided on the wall, for example, when the wall-connecting member 40 is a fixing screw partially inserted into the wall, a portion of the fixing screw protruding from the wall may be inserted into the wall-mounted mounting hole 12, thereby fixing the corner-connecting member 10 to the wall. The screen fixing hole 13 is used to fix the corner connector 10 and the projection screen 100 together, and for example, the two may be fixed by passing through the screen fixing hole 13 and a connection hole opened on the screen by a pin or a rivet or the like.
The present invention is not limited to the specific arrangement positions of the spring connection hole 11, the wall-mounted mounting hole 12 and the screen fixing hole 13, and is not limited to the specific shape and structure of the corner connector 10, and those skilled in the art can adjust the shape and structure of the corner connector 10 by combining the screen structure and other factors, so long as the requirements of the related fixing connection can be satisfied.
For example, as shown in fig. 2a, the projection of the corner connector 10 on the projection screen is generally trapezoidal, and two oblique sides of the trapezoid are perpendicular to each other, so as to be conveniently fixed on the projection screen. The corner connector 10 is provided with a plurality of screen fixing holes 13 on the bottom surface close to the projection screen 100, the bottom surface extends a distance away from the projection screen 100 to form a side surface provided with a spring connecting hole 11, and then the side surface extends along a direction parallel to the projection screen 100 to form a top surface provided with a wall mounting hole 12. The present invention is not limited to the arrangement position of the spring connection hole 11, and a person skilled in the art may select the arrangement position according to actual needs, for example, the spring connection hole 11 may be arranged on a side surface projected as the short side of the trapezoid (as shown in fig. 2 a), on a side surface projected as the long side of the trapezoid (not shown in the figure), or the spring connection hole 11 may be arranged on a top surface parallel to a plane on which the projection screen is located.
In order to install the projection screen 100, it is generally necessary to measure the size of the projection screen 100, and then fix the wall connection member 40 such as a fixing screw to the wall according to the corresponding size, and there is an unavoidable error in the measurement and installation process, and in order to reduce the influence of the error and facilitate fine adjustment of the position of the projection screen 100, the wall-mounted mounting hole 12 is generally a key type, which includes a circular hole 121 and a bar-shaped hole 122 connected to each other, wherein the diameter of the circular hole 121 is larger than the width of the bar-shaped hole 122.
The elastic connection member 20 may be an elastic connection rod, for example, the elastic connection rod includes at least two sections of connection rods, and a spring is disposed between adjacent connection rods. The spring may be a coil spring or a gas spring.
When the spiral spring is selected as the spring, the elasticity of the spiral spring can be deduced by Hooke's law. As the length of the elastic connection member 20 increases, the elastic force provided by the elastic connection member 20 decreases, and the tension applied to the projection screen 100 decreases. To ensure that the projection screen 100 is under sufficient tension after deployment, the spring force provided by the spring connector 20 when compressed needs to be set to be large. At this time, before installing the elastic connection members 20, the user needs to compress the plurality of elastic connection members 20 with a large force to complete the installation, and the process is cumbersome and laborious.
To solve the above problems, the elastic connection member 20 of the present invention is preferably a gas spring. The gas spring has the greatest characteristic of having a preset elastic force, and the elastic force does not change with the tensioning of the projection screen 100, the extension or shortening of the gas spring.
It should be added that the present invention is not limited to the preset spring force of the gas spring. Those skilled in the art can select and set parameters such as 200N according to the material of the screen.
Further, in order to enable the elastic force provided by the elastic connection member 20 to be applied to the projection screen 100 more uniformly, the projection of the elastic connection member 20 on the projection screen 100 is collinear with the diagonal of the projection screen 100 when the elastic connection member 20 is installed.
FIG. 2b is a schematic illustration of the connection of an embodiment of the elastic connector with an angle connector according to the present invention; FIG. 2c is a schematic view of another embodiment of the elastic connector of the present invention connected to an angle connector; FIG. 2d is a schematic view of a connection between an elastic connector and an angle connector according to another embodiment of the present invention. As shown in fig. 2a to 2d, in the present invention, a connection assembly for connecting the corner connector 10 is provided at one end of the elastic connector 20, and the connection assembly is disposed corresponding to the spring connection hole 11 of the corner connector 10.
Specifically, as shown in fig. 2b, the connection assembly includes a spherical stopper 21, the diameter of the spherical stopper 21 is larger than the diameter of the spring connection hole 11, when the spherical stopper 21 abuts against the spring connection hole 11, the spherical stopper 21 does not pass through the spring connection hole 11, and since the shape of the connection assembly is spherical, the spherical stopper 21 can realize the rotation of the elastic connection member 20 in multiple directions with the spring connection hole 11 as a reference, and the mutual movement of the elastic connection member 20 is not affected while the elastic connection member 20 is limited.
The present invention is not limited to the specific structure of the elastic connection member 20. As shown in fig. 2c, the connecting assembly comprises an ellipsoidal stopper 22, and similar to fig. 2b, the ellipsoidal stopper 22 has a minor axis diameter larger than that of the spring connecting hole 11, and when the ellipsoidal stopper 22 abuts against the spring connecting hole 11, the ellipsoidal stopper 22 does not pass through the spring connecting hole 11, so that the elastic connecting member 20 is restrained and the mutual movement of the two is not affected.
Further, as shown in fig. 2d, the connection assembly includes a stop ring 23, and the diameter of the stop ring 23 is larger than the diameter of the spring connection hole 11 and is spaced from the end of the elastic connection member 20, so that the elastic connection member 20 can be limited after being inserted into the spring connection hole 11, and the elastic connection member 20 is clamped in the spring connection hole 11.
In order to prevent the elastic connection member 20 from being separated from the spring connection hole 11, in the present invention, the connection assembly further includes an end cap 24, the diameter of the end cap 24 is larger than that of the spring connection hole 11, and the end cap 24 may be connected to the elastic connection member 20 by means of threads or a snap. As shown in fig. 2d, the end cap 24 may be coupled to a portion of the elastic coupling member 20 passing through the spring coupling hole 11 (an end of the elastic coupling member 20) such that the corner coupling member 10 is interposed between the stopper ring 23 and the end cap 24 to prevent the elastic coupling member 20 from being separated.
The end cap 24 may also be provided at the location of the spherical or ellipsoidal stop 21, 22 passing through the spring connection hole 11. Of course, those skilled in the art may select other existing structures (such as ball joint) for connection according to actual needs.
In order to avoid deformation of the projection screen mounting device after the projection screen mounting device is mounted, the spring fixing portion is further arranged on the spring connecting portion, and the spring fixing portion can fix the relative positions of the elastic connecting piece 20 and the center fixing plate 30, so that relative rotation between the elastic connecting piece 20 and the center fixing plate 30 cannot occur. The present invention is not limited to the specific structure of the spring fixing portion, and those skilled in the art can design according to actual needs.
The spring fixing portion may fix the elastic connection member 20 by means of a snap. For example, it is a semicircular buckle, and fig. 3 is a schematic structural view of the semicircular buckle of the present invention, and as shown in fig. 3, an opening of the semicircular buckle is smaller than a diameter of the elastic connection member 20. In the process of rotating the elastic connecting piece 20, the opening of the semicircular buckle is opened by the elastic connecting piece 20, and then the elastic connecting piece 20 enters the semicircular buckle, and the opening of the semicircular buckle is reset to prevent the elastic connecting piece 20 from continuing to rotate.
Alternatively, the spring fixing portion may fix the elastic connection member 20 by screwing. For example, the central fixing plate 30 is provided with a screw, and the elastic connection member 20 is correspondingly provided with threads, and the screw is screwed into the threads of the elastic connection member 20, thereby fixing the elastic connection member 20.
Alternatively, the spring fixing portion may fix the elastic connection member 20 by means of a pin. For example, the central fixing plate 30 and the elastic connection member 20 are provided with through holes, and pins are inserted into the through holes, thereby fixing the elastic connection member 20.
To further secure the flattened projection screen 100, the projection screen mounting apparatus further includes a screen bezel. Preferably, the screen frame is of a special-shaped column structure, for example, all or part of the screen frame is of an L-shaped, T-shaped or cross-shaped column section, or all or part of the screen frame is of a rectangle, the rectangle is hollow, reinforcing ribs of different structures are designed inside the rectangle, and the screen frame of the special-shaped column structure can improve the section moment of inertia and the bending modulus while reducing the weight of the screen frame, so that the rigidity and the straightness of the screen frame are improved. The screen frame can be made of extruded aluminum profiles, and has the cross section with low density, high section moment of inertia and high bending modulus.
Fig. 4 is a partial schematic view of the screen frame of the present invention. Specifically, the number of the screen frames 50 is 4, which are respectively provided corresponding to the length and width of the projection screen 100 so as to surround the projection screen 100 after installation. In order to install and fix the screen frame 50, the corner connector 10 is further provided with a screen frame fixing hole 14 for fixing the screen frame 50. Since the screen housing 50 is disposed coplanar with the four corner connectors 10, the four corners of the projection screen 100 are ensured to be coplanar by the rigidity of the screen housing, thereby fine-tuning the flatness of the projection screen 100.
Since the wall carrying the projection screen 100 may be uneven, the present invention can also ensure the perpendicularity of the projection screen 100 by adjusting the distance between the projection screen 100 and the wall.
In particular, the projection screen mounting apparatus of the present invention may also include a retractable wall connector 40, 40'. FIG. 5a is a cross-sectional view of an embodiment of the retractable wall connector of the present invention; fig. 5b is a cross-sectional view of another embodiment of the retractable wall connector of the present invention. As shown in fig. 5a, the wall connector 40 includes a rotation shaft 41 and a fixing shaft 42 connected by screw, and a nail part 420 is provided at one end of the fixing shaft 42 away from the rotation shaft 41 for fixing the wall connector 40 on a wall; the other end is provided with external threads. The end of the rotating shaft 41 far away from the fixed shaft 42 is a boss portion 410, which is used for being matched with the wall-mounted mounting hole 12 on the corner connector 10, so that the corner connector 10 is fixed on the wall connector 40, preferably, an annular groove is arranged on the boss portion 410, so that the boss portion is mutually buckled with the wall-mounted mounting hole 12 which is approximately a key type, and the corner connector is prevented from falling off; an internal thread is formed at the other end of the rotating shaft 41 corresponding to the external thread of the fixed shaft 42. When the rotating shaft 41 and the fixed shaft 42 which are connected through the screw are relatively rotated, the distance between the rotating shaft 41 and the fixed shaft 42 is changed due to the interaction of the internal screw and the external screw, thereby changing the length of the wall connecting member 40 itself and further adjusting the distance between the projection screen 100 and the wall. The invention is not limited thereto, and for example, the screw structure on the rotating shaft and the fixed shaft may be changed, or the telescopic operation may be realized by using other existing mechanical structures. As shown in fig. 5b, the wall connection member 40' includes a rotation shaft 41' and a fixing shaft 42' which are connected by screw threads, wherein one end of the fixing shaft 42' away from the rotation shaft 41' is a nail portion 420, and the other end is provided with an internal screw thread. One end of the rotating shaft 41' far away from the fixed shaft 42' is a boss part 410, the other end is provided with an inner core, and the outer side of the inner core is provided with external threads corresponding to the internal threads of the fixed shaft 42 '.
FIG. 6 is a schematic view of the mounting of the corner connector of the present invention on a projection screen; FIG. 7 is a schematic view of the resilient connecting element of the present invention as it is inserted into the corner connecting element; fig. 8 is a top view of fig. 7. As shown in fig. 6 to 8, the present invention further provides a method for using the projection screen mounting apparatus, where the method includes the following steps:
s10: unfolding the projection screen and mounting the corner connectors at the edges of the projection screen (as shown in fig. 6);
s20: the elastic connecting piece is rotatably connected to the central fixing plate;
s30: placing the center fixing plate over the center of the projection screen and inserting the elastic connection member into the spring connection hole on the corner connection member (as shown in fig. 7 and 8);
further, after S30, before S40, there may be S31: and installing an end plug.
S40: pushing the central fixing plate to the direction of the projection screen to enable the surface of the projection screen to be flat through the support of the elastic connecting piece;
when the projection screen is in a flat surface state, the central fixing plate may or may not be in contact with the projection screen, and due to the provision of the spring fixing portion, the projection screen can be stably in a flat surface state even if the central fixing plate is not in contact with the projection screen.
S70: the projection screen is mounted on a wall connection provided to a wall.
Further, before S70 after S40, there may be S41: the spring fixing part is used for fixing the relative position of the elastic connecting piece and the central fixing plate.
Further, before S70 after S41, there may be S50: the screen frame is mounted on the corner connector.
Further, before S70 after S50, there may be S60: a retractable wall attachment is secured to the wall.
Further, after S70, there may be S71: the boss part of the wall connecting piece is inserted into the circular hole of the wall hanging mounting hole, and then the strip-shaped hole is cut.
Further, after S71, there may be S72: the length of the wall connector is adjusted.
After the elastic connecting piece, the corner connecting piece, the central fixing plate and the projection screen are initially assembled, the elastic force of the elastic connecting piece is converted into the unfolding force of the projection screen in a pushing mode, the step of pre-compressing the elastic connecting piece is avoided, and the stress of the projection screen can be uniform. In addition, when the elastic connector including the gas spring is needed, for example, since the force F (pressure) =f (gas) sin (a) is applied by pushing, wherein F (gas) is the pressure of the elastic connector, and a is the angle between the elastic connector and the projection screen, and since a is an angle smaller than 90 degrees, when the projection screen is installed, people can install the projection screen by applying a force smaller than F (gas) (which becomes smaller with decreasing angle), and compress the elastic connector, that is, the use method of the projection screen installation device disclosed in the invention can complete the installation of the projection screen with a smaller force when the installation step is simplified compared with the prior art.
It should be noted that the present invention is not limited to the method of using the projection screen mounting apparatus, for example, the projection screen may be unfolded in advance so as to be on a plane, and then the projection screen mounting apparatus may be mounted on the projection screen in a manner of being placed. In other words, the projection screen mounting apparatus of the present invention can be mounted not only by the mounting method in the prior art but also by pushing. When the installation mode in the prior art is adopted, after the installation is completed, the elastic connecting piece can be in a compressed state or in a normal (uncompressed) state.
In summary, the present invention provides a projection screen installation device including an angle connector, an elastic connector and a central fixing plate and a method for using the same, so that a user can install a projection screen with fewer components, and the installation is easy and labor-saving; and the projection screen mounting device can be combined, disassembled and assembled to be favorable for packaging and transportation, so that the use experience of a user is optimized while the flatness of the projection screen is ensured.
Claims (14)
1. A projection screen mounting apparatus for mounting and securing a projection screen, the projection screen mounting apparatus comprising:
a corner connector secured to an edge of the projection screen;
a center fixing plate disposed at the center of the rear surface of the projection screen;
wherein the corner connecting piece is connected with the central fixing plate through an elastic connecting piece;
the corner connecting piece is provided with a spring connecting hole for connecting the elastic connecting piece;
one end of the elastic connecting piece is provided with a connecting component for connecting the corner connecting piece, and the connecting component is arranged corresponding to the spring connecting hole on the corner connecting piece;
the central fixing plate is provided with a plurality of spring connecting parts, the number of the spring connecting parts is equal to that of the spring connecting parts, the spring connecting parts comprise hinge assemblies, the elastic connecting parts are rotatably connected to the central fixing plate through the hinge assemblies, the spring connecting parts are also provided with spring fixing parts, the spring fixing parts are used for fixing the relative positions of the elastic connecting parts and the central fixing plate, the spring fixing parts are semicircular buckles, and the openings of the semicircular buckles are smaller than the diameter of the elastic connecting parts;
the connecting assembly comprises a spherical baffle, and the diameter of the spherical baffle is larger than that of the spring connecting hole; alternatively, the connecting assembly comprises an ellipsoidal stopper, the diameter of the minor axis of the ellipsoidal stopper is larger than the diameter of the spring connecting hole; or, the connecting assembly comprises a baffle ring, wherein the diameter of the baffle ring is larger than that of the spring connecting hole, and the baffle ring and the tail end of the elastic connecting piece keep a distance, so that the spring connecting hole can limit the connecting assembly and simultaneously move mutually.
2. The projection screen mounting apparatus of claim 1 wherein the resilient connecting element is in a compressed state after the projection screen is mounted and secured.
3. The projection screen mounting apparatus of claim 1 wherein the corner connector has:
the wall-hung mounting hole is used for connecting a wall connecting piece arranged on a wall;
and a screen fixing hole for fixing the corner connector and the projection screen together.
4. The projection screen mounting apparatus of claim 1 wherein the connection assembly further comprises an end cap having a diameter greater than the spring attachment aperture, the end cap being disposed at a distal end of the resilient connection such that the corner connection is sandwiched between the stop ring and the end cap.
5. The projection screen mounting apparatus of claim 3 wherein the corner connector defines a plurality of screen attachment holes in a bottom surface adjacent the projection screen, the bottom surface extending away from the projection screen to form a side surface defining a spring attachment hole, the side surface extending in a direction parallel to the projection screen to form a top surface defining a wall-mount attachment hole.
6. A projection screen mounting apparatus as claimed in claim 3 wherein the corner connector and projection screen are secured by staking.
7. The projection screen mounting apparatus of claim 3 wherein the wall-mount mounting aperture is generally key-type comprising a circular aperture and a bar aperture connected, wherein the circular aperture has a diameter greater than the width of the bar aperture.
8. The projection screen mounting apparatus of claim 1 wherein the resilient connector comprises a coil spring or a gas spring.
9. The projection screen mounting apparatus of claim 1 wherein the projection of the resilient connection onto the projection screen is collinear with a diagonal of the projection screen.
10. The projection screen mounting apparatus of claim 1 further comprising a screen bezel, the screen bezel being a contoured post structure.
11. The projection screen mounting apparatus of claim 10 wherein the corner connector further includes a screen bezel mounting aperture for mounting the screen bezel, the screen bezel being disposed coplanar with the corner connector.
12. The projection screen mounting apparatus of claim 1 further comprising a retractable wall connector secured to the wall at one end and connected to the corner connector at the other end.
13. The projection screen mounting apparatus of claim 12 wherein the wall connector includes a rotatable shaft and a stationary shaft threadably connected, the stationary shaft having a nail at an end thereof remote from the rotatable shaft for securing the wall connector to a wall; one end of the rotating shaft, which is far away from the fixed shaft, is provided with a boss part which is used for being connected with the corner connecting piece.
14. The application method of the projection screen mounting device is characterized in that the projection screen mounting device comprises a corner connecting piece, a center fixing plate and an elastic connecting piece, wherein a spring connecting hole is formed in the corner connecting piece and used for connecting the elastic connecting piece;
the central fixing plate is provided with a plurality of spring connecting parts, the number of the spring connecting parts is equal to that of the spring connecting parts, the spring connecting parts comprise hinge assemblies, the elastic connecting parts are rotatably connected to the central fixing plate through the hinge assemblies, the spring connecting parts are also provided with spring fixing parts, the spring fixing parts are used for fixing the relative positions of the elastic connecting parts and the central fixing plate, the spring fixing parts are semicircular buckles, and the openings of the semicircular buckles are smaller than the diameter of the elastic connecting parts;
one end of the elastic connecting piece is provided with a connecting component for connecting the corner connecting piece, and the connecting component is arranged corresponding to the spring connecting hole on the corner connecting piece;
the connecting assembly comprises a spherical baffle, and the diameter of the spherical baffle is larger than that of the spring connecting hole; alternatively, the connecting assembly comprises an ellipsoidal stopper, the diameter of the minor axis of the ellipsoidal stopper is larger than the diameter of the spring connecting hole; or, the connecting component comprises a baffle ring, the diameter of the baffle ring is larger than that of the spring connecting hole, and the baffle ring and the tail end of the elastic connecting piece are kept at a distance, so that the spring connecting hole can limit the connecting component and simultaneously can move mutually;
the using method comprises the following steps:
s10: unfolding the projection screen, and mounting the corner connectors at the edges of the projection screen;
s20: rotatably connecting the elastic connecting piece to the central fixing plate;
s30: placing the central fixing plate above the center of the projection screen, and inserting the elastic connecting piece into the spring connecting hole on the corner connecting piece;
s40: the central fixing plate is pushed to the direction of the projection screen, so that the surface of the projection screen is flat through the support of the elastic connecting piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671157.XA CN112305846B (en) | 2019-07-24 | 2019-07-24 | Projection screen mounting device and use method thereof |
| PCT/CN2020/103577 WO2021013191A1 (en) | 2019-07-24 | 2020-07-22 | Projection screen installation device and use method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671157.XA CN112305846B (en) | 2019-07-24 | 2019-07-24 | Projection screen mounting device and use method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN112305846A CN112305846A (en) | 2021-02-02 |
| CN112305846B true CN112305846B (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910671157.XA Active CN112305846B (en) | 2019-07-24 | 2019-07-24 | Projection screen mounting device and use method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN112305846B (en) |
| WO (1) | WO2021013191A1 (en) |
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| US4017152A (en) * | 1975-05-14 | 1977-04-12 | Allen William P | Portable projection screen |
| CN1755517A (en) * | 2004-09-27 | 2006-04-05 | 光学技术有限责任两合公司 | Portable projection device |
| CN200959064Y (en) * | 2006-10-21 | 2007-10-10 | 广州美视晶莹银幕有限公司 | Conveniently-liftable standing projection screen |
| CN202252717U (en) * | 2011-08-17 | 2012-05-30 | 珠海石头电子有限公司 | Hanging and leaning structure for installing liquid crystal display split joint wall |
| KR20140122870A (en) * | 2013-04-11 | 2014-10-21 | (주)피크파크 | Beam projector screen for camping |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5239639B2 (en) * | 2008-08-29 | 2013-07-17 | セイコーエプソン株式会社 | screen |
| CN201845166U (en) * | 2010-10-18 | 2011-05-25 | 陈英文 | Improved portable structure of translucent screen |
| US10156781B2 (en) * | 2015-10-21 | 2018-12-18 | Arovia, Inc. | Spontaneous pop-up display device |
| CN206271343U (en) * | 2016-12-09 | 2017-06-20 | 重庆英洛凡科技有限公司 | A kind of arc-shaped LED display screen |
| CN107640400B (en) * | 2017-09-14 | 2019-05-24 | 南京宝丽晶电子科技有限公司 | A kind of recyclable panel display screen packing box |
-
2019
- 2019-07-24 CN CN201910671157.XA patent/CN112305846B/en active Active
-
2020
- 2020-07-22 WO PCT/CN2020/103577 patent/WO2021013191A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017152A (en) * | 1975-05-14 | 1977-04-12 | Allen William P | Portable projection screen |
| CN1755517A (en) * | 2004-09-27 | 2006-04-05 | 光学技术有限责任两合公司 | Portable projection device |
| CN200959064Y (en) * | 2006-10-21 | 2007-10-10 | 广州美视晶莹银幕有限公司 | Conveniently-liftable standing projection screen |
| CN202252717U (en) * | 2011-08-17 | 2012-05-30 | 珠海石头电子有限公司 | Hanging and leaning structure for installing liquid crystal display split joint wall |
| KR20140122870A (en) * | 2013-04-11 | 2014-10-21 | (주)피크파크 | Beam projector screen for camping |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021013191A1 (en) | 2021-01-28 |
| CN112305846A (en) | 2021-02-02 |
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