CN115712224A - Screen frame and projection screen - Google Patents

Abstract

The application discloses screen frame and projection screen belongs to the projection display field. The screen frame includes: two folding frames that set up relatively and two flexible frames that set up relatively. The telescopic frames connected with the two folding frames can stretch out and draw back in the length direction of the telescopic frames, and the two sub-folding frames can be rotatably connected through the hinge mechanism to be folded. In this manner, the various components can be assembled to form a unitary frame (i.e., a rectangular frame) before the screen frame enters the user's home. The telescopic frames can be shortened in the length direction of the telescopic frames to drive the two foldable frames to move oppositely, so that the whole size of the rectangular frame is small. In addition, after the size of the rectangular frame in the length direction of the telescopic frame is reduced, the two sub-folding frames can be rotated relatively through the hinge mechanism to form the folding frame, the overall size of the rectangular frame is further reduced, and the transportation difficulty of the screen frame can be effectively simplified.

Description

Screen frame and projection screen

Technical Field

The present disclosure relates to projection displays, and particularly to a screen frame and a projection screen.

Background

With the continuous development of science and technology, laser projection systems are increasingly applied to the work and life of consumers. At present, laser projection systems mainly include: a laser projection device and a projection screen. The laser projection equipment emits light beams to the projection screen, and the projection screen receives the light beams to realize the display of pictures.

In the related art, the size of the projection screen is getting larger, especially the size of the projection screen of 100 inches and more. The space occupied by the projection screen is large, and therefore the transportation difficulty of the projection screen is inevitably increased.

Disclosure of Invention

The embodiment of the application provides a screen frame and a projection screen. The problem that the occupied space of the projection screen in the prior art is large, which causes the transportation difficulty to be large can be solved, the technical scheme is as follows:

in one aspect, there is provided a screen frame, including:

the foldable frame comprises two oppositely arranged folding frames and two oppositely arranged telescopic frames;

each of the folded rims includes: the foldable frame comprises two sub-foldable frames and a hinge mechanism positioned between the two sub-foldable frames, wherein the two sub-foldable frames are rotatably connected through the hinge mechanism;

the two ends of each telescopic frame are fixedly connected with the end parts of the two folding frames respectively, and each telescopic frame can stretch in the length direction of the telescopic frame to adjust the distance between the two folding frames.

In another aspect, a projection screen is provided, the projection screen comprising:

the screen frame and flexible curtain, the laminating of flexible curtain is in screen frame's front, screen frame is any one of the above-mentioned screen frame who gives.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a screen frame may include: two folding frames that set up relatively and two flexible frames that set up relatively. The flexible frame that is connected with two folding frames in the screen frame can stretch out and draw back on the length direction of flexible frame, and two sub-folding frames in every folding frame can pass through the rotatable coupling of hinge mechanism to fold. In this manner, the components of the screen frame can be assembled to form a unitary frame (i.e., a rectangular frame) before the screen frame enters the user's residence. The telescopic frame can be shortened in the length direction of the telescopic frame to drive the two oppositely-arranged foldable frames to move in opposite directions, so that the whole size of the rectangular frame is small. In addition, after the size of the rectangular frame in the length direction of the telescopic frame is reduced, the first frame and the second frame in the rectangular frame can rotate relatively through the hinge mechanism to form a folding frame, the overall size of the rectangular frame is further reduced, and the transportation difficulty of the screen frame can be effectively simplified. After the screen frame is integrated in the projection screen, the transportation difficulty of the projection screen can be effectively simplified. In addition, after the screen frame is transported to the site where the user resides, the first frame and the second frame are rotated to the coplanar position by the hinge mechanism. And after the telescopic frame is extended in the length direction, the final assembly operation of the screen frame can be completed. Therefore, the assembling process of the user can be effectively simplified, the assembling time is saved, and the use experience of the user is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a screen frame provided in an embodiment of the present application;

fig. 2 is a diagram illustrating a folded and shortened screen frame according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another screen frame provided in the practice of the present application;

FIG. 4 is a diagram illustrating the shortened screen frame shown in FIG. 3;

fig. 5 is an effect view of the screen frame shown in fig. 4 after being folded;

FIG. 6 is an exploded view of a first sub-frame, a folded frame, and angle iron according to embodiments of the present disclosure;

FIG. 7 is a schematic structural diagram of another screen frame provided in the embodiments of the present application;

FIG. 8 is a diagram illustrating the shortened screen frame of FIG. 7;

fig. 9 is an effect view of the folded screen frame shown in fig. 8;

FIG. 10 is a diagram illustrating a structure of another screen frame according to an embodiment of the present application;

FIG. 11 is a diagram illustrating a structure of a screen frame according to another embodiment of the present application;

fig. 12 is an effect diagram of the first sub-frame and the second sub-frame connected by a limiting member according to the embodiment of the present application;

fig. 13 is a schematic structural diagram of a first limiting element and a second limiting element in cooperation according to an embodiment of the present disclosure;

FIG. 14 is an exploded view of a screen frame according to another embodiment of the present application;

fig. 15 is a schematic structural view of the screen frame shown in fig. 14;

FIG. 16 is an exploded view of another screen frame provided in another embodiment of the present application;

fig. 17 is a schematic structural view of the screen frame shown in fig. 16;

fig. 18 is a diagram illustrating a connection effect between a second auxiliary sub-frame and a second sub-frame according to an embodiment of the present disclosure;

FIG. 19 is a diagram illustrating an effect of connecting a second auxiliary sub-frame and a second sub-frame according to an embodiment of the present disclosure;

FIG. 20 is a schematic diagram of another screen frame according to another embodiment of the present application;

fig. 21 is an exploded view of a projection screen provided in an embodiment of the present application;

fig. 22 is a schematic structural diagram of a laser projection system according to an embodiment of the present application.

Specific embodiments of the present application have been shown by way of example in the drawings and will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, the following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings.

In the related art, a frame for supporting a screen in a projection screen is generally composed of a plurality of borders and structural members for connecting the borders. However, the size of the projection screen is getting larger and larger at present, resulting in the size of the frame also getting larger and larger. If the frame is assembled and then transported to the residence of the user, the transportation difficulty is large. If all the components in the frame are disassembled and then transported to the place where the user lives and then assembled, the user is complicated to assemble, the assembly takes long time, and the user experience is poor.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a screen frame according to an embodiment of the present disclosure. The screen frame 000 may include: two oppositely disposed foldable side frames 100 and two oppositely disposed telescopic side frames 200.

Each of the folded bezels 100 in the screen frame 000 may include: two sub-folding rims 101, and a hinge mechanism 102 located between the two sub-folding rims 101, the two sub-folding rims 101 being rotatably connected by the hinge mechanism 102. Illustratively, after two oppositely arranged foldable frames 100 and two oppositely arranged telescopic frames 200 in the screen frame 000 are connected end to end in sequence, a rectangular frame a can be formed. The rectangular frame a may include: a first frame A1 and a second frame A2. In which one sub-foldable frame 101 of one foldable frame 100 and one sub-foldable frame 101 of the other foldable frame 100, and one telescopic frame 200 between the two sub-foldable frames 101 may constitute the first frame A1. The other sub-folded rims 101 and 101 of the one folded rim 100 and the other sub-folded rim 101 of the other folded rim 100, and the one telescopic rim 200 between the two sub-folded rims 101 may constitute the second frame A2. The hinge mechanism 102 may be located between the first frame A1 and the second frame A2, and the first frame A1 and the second frame A2 can be relatively rotated by the hinge mechanism 102 to form a folding frame. In addition, when the first frame A1 is rotated to the coplanar position with respect to the second frame A2 by the hinge mechanism 102, the first frame A1 and the second frame A2 can constitute a rectangular frame a. In this application, the number of the hinge mechanisms 102 may be two, and the arrangement direction of the two hinge mechanisms 102 is perpendicular to the folding direction of the rectangular frame a. In other possible implementations, the number of the hinge mechanisms 102 may also be three, which is not specifically limited in the embodiment of the present application.

Both ends of the telescopic frame 200 in the screen frame 000 may be fixedly connected with the ends of the two foldable frames 100, respectively, and each telescopic frame 200 can be telescopic in the length direction of this telescopic frame 200 to adjust the distance between the two foldable frames 100.

In the embodiment of the present application, please refer to fig. 2, and fig. 2 is a diagram illustrating a folding and shortening effect of a screen frame according to the embodiment of the present application. The telescopic frame 200 connected to the two folding frames 100 in the screen frame 000 can be extended and contracted in the length direction of this telescopic frame 200, and the two sub-folding frames 101 in each folding frame 100 can be rotatably connected by the hinge mechanism 102 to be folded. In this manner, the components of the screen frame 000 can be assembled to form a unitary frame (i.e., a rectangular frame) before the screen frame 000 enters the user's residence. The telescopic frame 200 can be shortened in the length direction of the telescopic frame 200 to drive the two oppositely arranged foldable frames 100 to move oppositely, so that the overall size of the rectangular frame is small. In addition, after the size of the rectangular frame in the length direction of the telescopic frame 200 is reduced, the first frame A1 and the second frame A2 in the rectangular frame can be relatively rotated through the hinge mechanism 102 to form a folding frame, so that the overall size of the rectangular frame is further reduced, and the transportation difficulty of the screen frame 000 can be effectively simplified. After the screen frame 000 is integrated in the projection screen, the transportation difficulty of the projection screen can be further effectively simplified. In addition, after the screen frame 000 is transported to the place where the user lives, the first frame A1 and the second frame A2 are rotated to the coplanar position by the hinge mechanism 102. And the final assembly of the screen frame 000 can be completed by extending the telescopic bezel 200 in the length direction thereof. Therefore, the assembling process of the user can be effectively simplified, the assembling time is saved, and the use experience of the user is improved.

In summary, the embodiment of the present application provides a screen frame, which may include: two folding frames that set up relatively and two flexible frames that set up relatively. The flexible frame that is connected with two folding frames in the screen frame can stretch out and draw back on the length direction of flexible frame, and two sub-folding frames in every folding frame can pass through the rotatable coupling of hinge mechanism to fold. In this manner, the components of the screen frame can be assembled to form a unitary frame (i.e., a rectangular frame) before the screen frame enters the user's residence. The telescopic frame can be shortened in the length direction of the telescopic frame to drive the two oppositely-arranged foldable frames to move oppositely, so that the whole size of the rectangular frame is small. In addition, after the size of the rectangular frame in the length direction of the telescopic frame is reduced, the first frame and the second frame in the rectangular frame can rotate relatively through the hinge mechanism to form a folding frame, the overall size of the rectangular frame is further reduced, and the transportation difficulty of the screen frame can be effectively simplified. After the screen frame is integrated in the projection screen, the transportation difficulty of the projection screen can be effectively simplified. In addition, after the screen frame is transported to the site where the user resides, the first frame and the second frame are rotated to the coplanar position by the hinge mechanism. And after the telescopic frame is extended in the length direction, the final assembly operation of the screen frame can be completed. Therefore, the assembling process of the user can be effectively simplified, the assembling time is saved, and the use experience of the user is improved.

In the embodiment of the present application, as shown in fig. 1, two foldable side frames 100 oppositely disposed and two telescopic side frames 200 oppositely disposed can constitute a rectangular frame a. The foldable frame 100 may be a long side of the rectangular frame a, and the retractable frame 200 may be a short side of the rectangular frame a. In this way, the two sub-folding rims 101 in each folding rim 100 can be relatively rotated to the stacking position by the hinge mechanism 102 to place the rectangular frame a in the folded state. Namely, the rectangular frame a can be folded in the long side direction, so that the length of the folded frame in the direction of the long side is small, and the transportation of the screen frame 000 is facilitated. Note that, the foldable frame 100 may be a short side of the rectangular frame a, and the retractable frame 200 may be a long side of the rectangular frame a, which is not specifically limited in the embodiment of the present invention.

Optionally, please refer to fig. 3, and fig. 3 is a schematic structural diagram of another screen frame provided in the present application. Each of the telescopic bezels 200 in the screen frame 000 may include: at least one first sub-frame 201 and at least one second sub-frame 202, and the first sub-frame 201 can be slidably connected with the second sub-frame 202. In this case, at least one first sub-frame 201 and at least one second sub-frame 202 are provided in each of the telescopic frames 200. Since the first sub-bezel 201 and the second sub-bezel 202 can be slidably connected. Therefore, by sliding the first sub frame 201 with respect to the second sub frame 202 or sliding the second sub frame 202 with respect to the first sub frame 201, the telescopic frame 200 can be extended and contracted in the longitudinal direction thereof. For example, the first sub-frame 201 can slide in a direction away from the second sub-frame 202 to extend the entire length of the telescopic frame 200, so as to increase the distance between the two oppositely disposed foldable frames 100. The first sub-frame 201 can also slide along a direction close to the second sub-frame 202, so that the overall length of the telescopic frame 200 is shortened, and the distance between the two oppositely arranged foldable frames 100 is reduced.

In the embodiment of the present application, there are multiple possible implementation manners for the number of the first sub-frames 201 and the number of the second sub-frames 202 that form the telescopic frame 200, and the following embodiments of the present application are schematically illustrated by taking two possible implementation manners as examples:

referring to fig. 3, fig. 4 and fig. 5, fig. 4 is an effect diagram of the shortened screen frame shown in fig. 3, and fig. 5 is an effect diagram of the folded screen frame shown in fig. 4. Each of the telescoping rims 200 in the screen frame 000 may include: two first sub-frames 201 and a second sub-frame 202, the second sub-frame 202 may be distributed between the two first sub-frames. In one telescopic frame 200, one end of one first sub-frame 201 departing from the second sub-frame 202 may be fixedly connected to an end of one of the two foldable frames 100 that are disposed opposite to each other. An end of the other first sub-frame 201 facing away from the second sub-frame 202 may be fixedly connected to an end of the other foldable frame 100 of the two foldable frames 100 disposed oppositely. In this case, one first sub-bezel 201 fixedly connected to one foldable bezel 100 can slide in a direction approaching the second sub-bezel 202 with respect to the second sub-bezel 202, and the other first sub-bezel 201 fixedly connected to the other foldable bezel 100 can also slide in a direction approaching the second sub-bezel 202 with respect to the second sub-bezel 202, so that the distance between the two oppositely disposed foldable bezels 100 is reduced. Or, one first sub-frame 201 fixedly connected to one foldable frame 100 can slide relative to the second sub-frame 202 in a direction away from the second sub-frame 202, and another first sub-frame 201 fixedly connected to another foldable frame 100 can also slide relative to the second sub-frame 202 in a direction away from the second sub-frame 202, so that the distance between the two oppositely disposed foldable frames 100 is increased.

For example, please refer to fig. 6, fig. 6 is an exploded schematic view of a first sub-frame, a folded frame and an angle iron according to an embodiment of the present disclosure. One end of the first sub-frame 201 departing from the second sub-frame 202 and the end of the foldable frame 100 may be fixedly connected by the cooperation of the angle iron B and the screw (not shown in the figure), so as to realize stable connection between the telescopic frame 200 and the foldable frame 100.

Referring to fig. 7, 8 and 9, fig. 7 is a schematic structural diagram of another screen frame provided in an embodiment of the present application, fig. 8 is an effect diagram of the shortened screen frame shown in fig. 7, and fig. 9 is an effect diagram of the folded screen frame shown in fig. 8. Each of the telescoping rims 200 in the screen frame 000 may include: a first sub-frame 201 and a second sub-frame 202, that is, the number of the first sub-frame 201 and the number of the second sub-frame 202 may be one. In one telescopic frame 200, one end of the first sub-frame 201 departing from the second sub-frame 202 may be fixedly connected to an end of one of the two foldable frames 100 that are disposed opposite to each other. An end of the second sub-frame 202 facing away from the first sub-frame 201 may be fixedly connected to an end of the other folded frame 100 of the two oppositely disposed folded frames 100. In this case, the first sub-bezel 201 may slide in a direction approaching the second sub-bezel 202 with respect to the second sub-bezel 202, so that a distance between the two oppositely disposed folded bezels 100 may be reduced. Alternatively, the first sub frame 201 may slide relative to the second sub frame 202 in a direction away from the second sub frame 202, so that the distance between the two oppositely disposed folded frames 100 may be increased.

It should be noted that, in both of the above two alternative implementation manners, the structures and the movement principles of the two telescopic frames 200 are schematically illustrated by taking the same as an example, and the structure and the movement principle of the other telescopic frame 200 may refer to the structure and the movement principle of the one telescopic frame 200, which is not described in detail herein.

In the embodiment of the present application, please refer to fig. 10, and fig. 10 is a schematic structural diagram of another screen frame provided in the embodiment of the present application. Each telescoping bezel 200 may further include: the first auxiliary sub-frame 203 may be fixedly connected to an end of the second sub-frame 202 away from the first sub-frame 201, and a length direction of the second sub-frame 202 may be perpendicular to a length direction of the first auxiliary sub-frame 203. The foldable frame 100 fixedly connected to the second sub-frame 202 may have an accommodating cavity (not shown), and the first auxiliary sub-frame 203 may be fixed in the accommodating cavity of the foldable frame 100 (specifically, the accommodating cavity of one sub-foldable frame fixedly connected to the second sub-frame). In this case, the first auxiliary sub-frame 203 and the second sub-frame 202 are fixedly connected at an end away from the first sub-frame 201, and the first auxiliary sub-frame 203 is fixed in the accommodating cavity of the foldable frame 100. In this way, the second sub-frame 202 may not be fixedly connected to the foldable frame 100 through the angle iron, and the number of the angle irons B in the screen frame 000 is reduced. For example, the first auxiliary sub-frame 203 and the foldable frame 100 may be fixedly connected by a screw connection. It should be noted that, in an actual process, the second sub-frame 202 and the first auxiliary sub-frame 203 may be integrally formed, or the second sub-frame 202 and the first auxiliary sub-frame 203 may be separately manufactured and then fixedly connected, which is not specifically limited in the embodiment of the present application.

Optionally, please refer to fig. 11, where fig. 11 is a schematic structural diagram of a screen frame according to another embodiment of the present application. Each of the telescopic bezels 200 in the screen frame 000 may further include: the first limiting member 204 may be connected to the first sub-frame 201, and the second limiting member 205 may be connected to the second sub-frame 202. The first limiting member 204 in the telescopic frame 200 may be configured to: when the first sub-frame 201 slides to a predetermined position along the length direction of the second sub-frame 202, it is connected to the second limiting member 205 in a matching manner. In the present application, the designated position may include a first designated position and a second designated position. For example, the first designated position may be characterized as a relative position between the first sub-frame 201 and the second sub-frame 202 when the distance between the two oppositely disposed folded frames 100 is at a maximum state after the first sub-frame 201 slides relative to the second sub-frame 202 in a direction away from the second sub-frame 202. In this way, when the first sub-frame 201 slides to the first predetermined position along the length direction of the second sub-frame 202, the first limiting member 204 and the second limiting member 205 are engaged with each other to limit the relative sliding between the first sub-frame 201 and the second sub-frame 202. When the screen frame 000 is integrated in the projection screen, after the screen is attached to the screen frame 000, the first limiting member 204 and the second limiting member 205 are connected in a matching manner, so that the screen frame 000 can stably support the screen. The second designated position may be characterized as a relative position between the first sub-frame 201 and the second sub-frame 202 when the distance between the two oppositely disposed folded frames 100 is in a minimum state after the first sub-frame 201 slides relative to the second sub-frame 202 along a direction close to the second sub-frame 202. In this way, when the first sub-frame 201 slides to the second designated position along the length direction of the second sub-frame 202, the first limiting member 204 and the second limiting member 205 are matched with each other to limit the relative sliding between the first sub-frame 201 and the second sub-frame 202, so as to facilitate the transportation of the screen frame 000.

In the embodiment of the present application, please refer to fig. 11, 12 and 13, fig. 12 is an effect diagram of a first sub-frame and a second sub-frame connected by a limiting member according to the embodiment of the present application, and fig. 13 is a schematic structural diagram of a first limiting member and a second limiting member matched according to the embodiment of the present application. One of the first limiting member 204 and the second limiting member 205 in each telescopic frame 200 may include: the limiting cylinder b1, the limiting sphere b2 and the compression spring b3, and the other of the first limiting member 204 and the second limiting member 205 may include: and a stopper hole b4. Wherein, compression spring b3 can be fixed in spacing section of thick bamboo b1, and the part of spacing spheroid b2 is located spacing section of thick bamboo b1, and the part is located outside spacing section of thick bamboo b1, and this spacing spheroid b2 can be connected with compression spring b 3's end. In addition, when the first sub-frame 201 slides to a specific position along the length direction of the second sub-frame 202, the limiting hole b4 in the limiting member may communicate with the limiting cylinder b1, and the portion of the limiting sphere b2 fixed in the limiting cylinder b1 may be located in the limiting hole b4. In the present application, the first limiting member 204 may include: a limiting cylinder b1, a limiting sphere b2 and a compression spring b3. The second limiting member 205 may include: a stopper hole b4; alternatively, the first limiting member 204 may include: the limiting hole b4 and the second limiting member 205 may include: a limiting cylinder b1, a limiting ball b2 and a compression spring b3. The embodiment of the present application does not limit this. It should be noted that, as shown in fig. 13, in the following embodiments, the first limiting member 204 may include a limiting hole b4, and the second limiting member 205 may include: the limiting cylinder b1, the limiting ball b2 and the compression spring b3 are schematically illustrated as an example.

For example, as shown in fig. 12 and 13, when the first limiting member 204 includes the limiting hole b4, the limiting hole b4 of the first sub-frame 201 may include: a first sub-stopper hole b41 and a second sub-stopper hole b42. Wherein, the first sub-limiting hole b41 is: when the first sub-frame 201 slides to the first predetermined position along the length direction of the second sub-frame 202, the first sub-frame is a position-limiting member connected to the second position-limiting member 205 in a matching manner. The second sub-limiting hole b42 is: when the first sub-frame 201 slides to a second designated position along the length direction of the second sub-frame 202, the first sub-frame is a position-limiting member connected to the second position-limiting member 205 in a matching manner. For example, when the first sub-frame 201 slides to a first designated position along the length direction of the second sub-frame 202, that is, slides to the position-limiting cylinder b1 to communicate with the first sub-limiting hole b41, the limiting ball b2 is ejected by the elastic force of the compression spring b3, so that a part of the limiting ball b2 is located in the first sub-limiting hole b 41. Thus, the limit between the first sub-frame 201 and the second sub-frame 202 is realized. It should be noted that when the first sub-frame 201 slides to the second designated position along the length direction of the second sub-frame 202, the action principle of the second sub-limiting hole b42 and the limiting cylinder b1, the limiting sphere b2 and the compression spring b3 can refer to the action principle of the first sub-limiting hole b41 and the limiting cylinder b1, the limiting sphere b2 and the compression spring b3, and details are not described herein.

Optionally, please refer to fig. 14, fig. 15, fig. 16, and fig. 17, where fig. 14 is an exploded schematic view of a screen frame provided in another embodiment of the present application, fig. 15 is a schematic view of a structure of the screen frame shown in fig. 14, fig. 16 is an exploded schematic view of another screen frame provided in another embodiment of the present application, and fig. 17 is a schematic view of a structure of the screen frame shown in fig. 16. The first sub-bezel 201 of each telescoping bezel 200 may be sleeved over the second sub-bezel 202. Each telescoping bezel 200 may further include: a second auxiliary sub-bezel 206. After the second sub-frame 202 slides in the direction away from the first sub-frame 201, the second auxiliary sub-frame 206 may be connected to the second sub-frame 202, and a surface c1 of the second auxiliary sub-frame 206 away from the second sub-frame 202 may be flush with the front surface c2 of the first sub-frame 201. In this case, after the second sub-frame 202 slides in the direction away from the first sub-frame 201, the second auxiliary sub-frame 206 is connected to the second sub-frame 202, and a surface c1 of the second auxiliary sub-frame 206 away from the second sub-frame 202 is flush with the front surface c2 of the first sub-frame 201. In this way, the height difference (the height in the direction perpendicular to the front surface of the first sub-bezel) between the second sub-bezel 202 and the first sub-bezel 201 can be effectively eliminated by the second auxiliary sub-bezel 206. And then when laminating the screen in the projection screen on the screen frame, can effectually guarantee the roughness with the region of first sub-frame 201 and the contact of second auxiliary sub-frame 206 in the screen. It should be noted that the front side c2 of the first sub-frame may be a side of the first sub-frame 201 facing the curtain after the screen is attached to the screen frame. It should be further noted that, in other possible implementation manners, the second sub-frame 202 may also be sleeved on the first sub-frame 201, so that the second auxiliary sub-frame 206 is connected to the first sub-frame 201 to eliminate a height difference between the second sub-frame 202 and the first sub-frame 201. For example, the cross-section of the first sub-bezel 201 may have a rectangular ring-shaped structure, and the rectangular ring-shaped structure may have a hollow region, so that a portion of the second sub-bezel 202 is located in the hollow region.

In this application, after the second sub-frame 202 slides in a direction away from the first sub-frame 201, the length of the second auxiliary sub-frame 206 connected to the second sub-frame 202 may be equal to or less than the length of the portion of the second sub-frame 202 outside the first sub-frame 201. For example, as shown in fig. 15 and 17, after the second sub-frame 202 slides in a direction away from the first sub-frame 201, the length of the second auxiliary sub-frame 206 connected to the second sub-frame 202 may be equal to the length of the portion of the second sub-frame 202 outside the first sub-frame 201.

For example, please refer to fig. 18, fig. 18 is a diagram illustrating a connection effect between a second auxiliary sub-frame and a second sub-frame according to an embodiment of the present disclosure. In this case, when the length of the second auxiliary sub-frame 206 is less than the length of the portion of the second sub-frame 202 located outside the first sub-frame 201, the length of the region having the height difference between the second sub-frame 202 and the first sub-frame 201 along the length direction of the telescopic frame 200 is smaller, and the influence on the flatness of the screen is smaller, and at this time, the height difference of the region may not be eliminated without providing another auxiliary sub-frame.

In the embodiment of the present application, please refer to fig. 19, where fig. 19 is a diagram illustrating a connection effect between a second auxiliary sub-frame and a second sub-frame according to the embodiment of the present application. The second auxiliary sub-frame 206 in each of the telescopic frames 200 may include: a folded structure D consisting of a first sheet structure 2061, a second sheet structure 2062 and a third sheet structure 2063, and the second sheet structure 2062 and the third sheet structure 2063 may be distributed on both sides of the first sheet structure 2061. After the second auxiliary sub-frame 206 is connected to the second sub-frame 202, a surface d1 of the first sheet structure 2061 in the second auxiliary sub-frame 206, which deviates from the second sub-frame 202, may be flush with the front surface c2 of the first sub-frame 201, a surface d2 of the second sheet structure 2062, which deviates from the second sub-frame 202, may be flush with the inner side surface d3 of the first sub-frame 201, and a surface d4 of the third sheet structure 2063, which deviates from the second sub-frame 202, may be flush with the outer side surface d5 of the first sub-frame. In this case, by providing the bending structure D composed of the first sheet-like structure 2061, the second sheet-like structure 2062 and the third sheet-like structure 2063, a surface D1 of the first sheet-like structure 2061 facing away from the second sub-frame 202 is flush with the front surface c2 of the first sub-frame 201, a surface D2 of the second sheet-like structure 2062 facing away from the second sub-frame 202 is flush with the inner side surface D3 of the first sub-frame 201, and a surface D4 of the third sheet-like structure 2063 facing away from the second sub-frame 202 is flush with the outer side surface D5 of the first sub-frame 201. Therefore, the flatness of the edge area of the curtain attached to the screen frame is good, and the attractiveness of the projection screen integrated with the screen frame 000 is guaranteed. For example, when the cross-section of the second sub-frame 202 has a rectangular shape, the plane of the second sheet structure 2062 and the plane of the third sheet structure 2063 are perpendicular to the plane of the first sheet structure 2061.

It should be noted that the inner side surface of the first sub-frame 201 may be an inner surface of an annular region surrounded by the rectangular frame a composed of the two oppositely disposed foldable frames 100 and the two oppositely disposed telescopic frames 200. The outer side surface of the first sub-frame 201 may be the outer side surface of a rectangular frame a composed of two oppositely arranged folding frames 100 and two oppositely arranged telescopic frames 200.

In the present application, the bending structure D composed of the first sheet structure 2061, the second sheet structure 2062 and the third sheet structure 2063 may be detachably connected to the second sub-frame 202. In this way, before the first sub-frame 201 needs to slide relative to the second sub-frame 202, an operator needs to separate the bending structure D from the second sub-frame 202 to realize smooth sliding between the first sub-frame 201 and the second sub-frame 202. For example, the bending structure D and the second sub-frame 202 may be connected by screws. Or can be detachably connected by matching a limiting cylinder, a limiting ball, a compression spring (not shown in the figure) and a limiting hole (not shown in the figure), for example. For example, a limiting hole is provided in the second sheet-like structure 2062 and the third sheet-like structure 2063, and a limiting cylinder, a limiting ball, and a compression spring are provided at a position corresponding to the limiting hole on the second sub-frame 202. After the bending structure D is connected with the second sub-frame 202, a part of the limiting sphere is located in the limiting hole, so that the bending structure D is connected with the second sub-frame 202. When the limiting ball body is pressed to enable the limiting ball body and the limiting hole to be relieved from limiting relation, the bending structure D can be separated from the second sub-frame 202.

Optionally, please refer to fig. 20, where fig. 20 is a schematic structural diagram of another screen frame according to another embodiment of the present application. The screen frame 000 may further include: a third limiting member 300, wherein the third limiting member 300 can be detachably connected to at least one sub-foldable frame 101 of the two sub-foldable frames 101 of each foldable frame 100. And the third limiting member 300 can be used to limit the two sub-folding frames 101 to a coplanar position. In this case, when the two sub-folding rims 101 are rotated to the coplanar position by the hinge mechanism 102, the third limiting member 300 can be fixedly connected to both of the two sub-folding rims 101. In this way, when the screen frame 000 is unfolded, the third limiting member 300 can prevent the two sub-foldable frames 101 in each foldable frame 100 from rotating relatively. And then after the screen frame 000 is integrated in the projection screen, the normal use of the projection screen is guaranteed. When the screen frame 000 needs to be folded, the third limiting member 300 is separated from at least one sub-folding side frame 101 of the two sub-folding side frames 101, so that the two sub-folding side frames 101 can be relatively rotated by the hinge mechanism 102. For example, the third limiting member 300 may be detachably connected to the two sub-foldable frames 101 by a screw connection.

In the present application, as shown in fig. 20, two sub-folded rims 101 in each of the folded rims 100 have positioning grooves 101a corresponding to the third positioning members 300. When the third positioning member 300 is connected to the two sub-foldable frames 101, the third positioning member 300 can be located in the positioning slot 101a. Thus, the positioning groove 101a can ensure the installation accuracy of the third positioning element 300 and the two sub-foldable frames 101.

In summary, the embodiment of the present application provides a screen frame, which may include: two folding frames that set up relatively and two flexible frames that set up relatively. The flexible frame that is connected with two folding frames in the screen frame can stretch out and draw back on the length direction of flexible frame, and two sub-folding frames in every folding frame can pass through the rotatable coupling of hinge mechanism to fold. In this manner, the components of the screen frame can be assembled to form a unitary frame (i.e., a rectangular frame) before the screen frame enters the user's residence. The telescopic frame can be shortened in the length direction of the telescopic frame to drive the two oppositely-arranged foldable frames to move in opposite directions, so that the whole size of the rectangular frame is small. In addition, after the size of the rectangular frame in the length direction of the telescopic frame is reduced, the first frame and the second frame in the rectangular frame can be relatively rotated through the hinge mechanism to form a folding frame, the overall size of the rectangular frame is further reduced, and the transportation difficulty of the screen frame can be effectively simplified. After the screen frame is integrated in the projection screen, the transportation difficulty of the projection screen can be effectively simplified. In addition, after the screen frame is transported to a place where the user lives, the first frame and the second frame are rotated to the coplanar position by the hinge mechanism. And after the telescopic frame is extended in the length direction, the final assembly operation of the screen frame can be completed. Therefore, the assembling process of the user can be effectively simplified, the assembling time is saved, and the use experience of the user is improved.

Referring to fig. 21, fig. 21 is an exploded schematic view of a projection screen according to an embodiment of the present disclosure. Projection screen 00 may include: the screen frame 000 and the flexible curtain 001, the flexible curtain 001 can be attached to the front surface of the screen frame 000. Wherein the screen frame 000 may be any one of the screen frames given above. As an example, the projection screen 00 may further include: a tensioning mechanism (not shown) that may be located on the back of the flexible curtain 001. The edge portion of the flexible curtain 001 may be folded to wrap the edge of the screen frame 000, and one end of the tensioning mechanism may be connected to the edge portion of the flexible curtain 001 and the other end may be connected to the screen frame 000. When the screen frame 000 is folded, the flexible curtain 001 may be folded together with the screen frame 000 to reduce the overall size of the projection screen 00 for easy transportation, and when the screen frame 000 is unfolded, a tightening force is applied to the edge portion of the flexible curtain 001 through a tightening mechanism to adjust the flatness of the flexible curtain 001.

The embodiment of the application also provides a laser projection system, and the laser projection system can be an ultra-short-focus laser projection system. For example, please refer to fig. 22, fig. 22 is a schematic structural diagram of a laser projection system according to an embodiment of the present disclosure. The laser projection system may include: projection screen 00 and laser projection device 01. Projection screen 00 can be the projection screen shown in any of the embodiments described above.

In this way, when the laser projection apparatus 01 works, the laser projection apparatus 01 can emit light obliquely upward, so that the laser projection apparatus 01 can project a picture onto the projection screen 00.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims (10)

1. A screen frame, comprising: the foldable frame comprises two oppositely arranged folding frames and two oppositely arranged telescopic frames;

each of the folded rims includes: the foldable frame comprises two sub-foldable frames and a hinge mechanism positioned between the two sub-foldable frames, wherein the two sub-foldable frames are rotatably connected through the hinge mechanism;

every the both ends of flexible frame respectively with the tip fixed connection of two folding frames, and every flexible frame can be in stretch out and draw back in the length direction of flexible frame to the adjustment distance between two folding frames.

2. The screen frame of claim 1, wherein each of the telescoping rims comprises: the first sub-frame is connected with the second sub-frame in a sliding mode.

3. The screen frame of claim 2, wherein each of the telescoping rims comprises: the two first sub-frames and the second sub-frame are distributed between the two first sub-frames;

wherein, in one in the flexible frame, one first sub-frame deviates from the one end of second sub-frame with one the tip fixed connection of folding frame, another first sub-frame deviates from the one end of second sub-frame with another the tip fixed connection of folding frame.

4. The screen frame of claim 2, wherein each of the telescoping rims comprises: one said first sub-frame and one said second sub-frame;

in one of the telescopic frames, one end of the first sub-frame, which deviates from the second sub-frame, is fixedly connected with one end of the folding frame, and one end of the second sub-frame, which deviates from the first sub-frame, is fixedly connected with the other end of the folding frame.

5. The screen frame of claim 4, wherein each of the telescoping bezels further comprises: the first auxiliary sub-frame is fixedly connected with one end, away from the first sub-frame, of the second sub-frame, and the length direction of the second sub-frame is perpendicular to that of the first auxiliary sub-frame;

and the folding frame fixedly connected with the second sub-frame is provided with an accommodating cavity, and the first auxiliary sub-frame is fixed in the accommodating cavity.

6. The screen frame of any of claims 2 to 5, wherein each of the telescoping rims further comprises: the first limiting piece is connected with the first sub-frame, and the second limiting piece is connected with the second sub-frame;

the first stopper is configured to: when the first sub-frame slides to a specified position along the length direction of the second sub-frame, the first sub-frame is connected with the second limiting piece in a matched mode.

7. The screen frame of claim 6, wherein one of the first and second stops comprises: spacing section of thick bamboo, spacing spheroid and compression spring, another in first locating part and the second locating part includes: a limiting hole;

the compression spring is fixed in the limiting cylinder, part of the limiting ball body is positioned outside the limiting cylinder, and the limiting ball body is connected with the end part of the compression spring;

when the first sub-frame slides to the designated position along the length direction of the second sub-frame, the limiting hole is communicated with the limiting cylinder, and part of the limiting ball body is positioned in the limiting hole.

8. The screen frame of any of claims 2 to 5, wherein the first sub-bezel is sleeved on the second sub-bezel, each of the telescopic bezels further comprising: a second auxiliary sub-frame;

after the second sub-frame slides along the direction deviating from the first sub-frame, the second sub-frame is connected with the second auxiliary sub-frame, and one surface of the second auxiliary sub-frame deviating from the second sub-frame is flush with the front surface of the first sub-frame.

9. The screen frame of claim 8, wherein the second auxiliary sub-bezel comprises: the bending structure comprises a first sheet structure, a second sheet structure and a third sheet structure, wherein the second sheet structure and the third sheet structure are distributed on two sides of the first sheet structure;

after the second auxiliary sub-frame is connected with the second sub-frame, one surface of the second sub-frame is flush with the front surface of the first sub-frame, one surface of the second sub-frame is flush with the inner side surface of the first sub-frame, and the other surface of the second sub-frame is flush with the outer side surface of the first sub-frame.

10. A projection screen, comprising: the screen frame and flexible curtain, flexible curtain laminating is in the front of screen frame, screen frame be the screen frame of any one of above-mentioned claims 1 to 9.

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