CN215769336U

CN215769336U - Expandable projection curtain frame

Info

Publication number: CN215769336U
Application number: CN202122382240.0U
Authority: CN
Inventors: 容志军; 叶雪敏
Original assignee: Guangdong Aikemei Technology Co ltd
Current assignee: Guangdong Aikemei Technology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-08
Anticipated expiration: 2031-09-29

Abstract

The utility model provides an expandable projection curtain frame, comprising: frame, foot rest, expansion frame and supporting clamp mechanism. The frame is of a rectangular structure and is provided with two long sides and two short sides, the top side and the bottom side of the frame are the long sides, and the side edges of the frame are the short sides; the foot stand is arranged on the side edge of the frame, and the expansion frame is detachably arranged on the top edge of the frame; the supporting clamp mechanism is arranged between the expanding frame and the top edge of the frame. The supporting clamp mechanism comprises a supporting column, one end of the supporting column supports against the expanding frame, and the other end of the supporting column supports against the top edge of the frame. The expandable projection curtain frame can select whether to expand the projection curtain frame according to the requirement, so that the expandable projection curtain frame is matched with the selected curtain size direction, and the film watching effect is further improved.

Description

Expandable projection curtain frame

Technical Field

The utility model relates to the technical field of projection equipment, in particular to an expandable projection screen frame.

Background

Projection screens are tools used in movies, offices, home theaters, and large conference venues to display projected images of images and video files. The projection curtain frame is used for erecting a projection curtain. Existing projection screens have multiple dimensions with different aspect ratios, and most users typically use screens and frames of only one dimension. However, the same size of the curtain and the frame is not suitable for all images, for example, the length and width of the projected image of the movie and television work is large, and the length and width of the projected image of PPT and the like is small. If images with different length-width ratios are projected on a curtain with the same dimension, white remains inevitably occur at the boundary of the curtain, which affects the viewing effect. If the curtain with different specifications is selected according to the image, the size specification of the curtain frame needs to be changed together, otherwise, because the frame border is not matched with the curtain, a black edge can appear outside the image border during projection, namely, the existence of the frame border can be identified, and the image viewing effect is influenced.

Therefore, how to design an expandable projection screen frame can expand the projection screen frame while selecting the screen size according to needs, so that the projection screen frame is matched with the selected screen size, and the effect of viewing is further improved, which is a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides an expandable projection screen frame, which can be used for selecting whether to expand the projection screen frame according to needs to enable the projection screen frame to be matched with the selected screen in the size direction, so that the film watching effect is improved.

The purpose of the utility model is realized by the following technical scheme:

an expandable projection screen frame, comprising: the device comprises a frame, a foot rest, a stretching frame and a supporting clamp mechanism;

the frame is of a rectangular structure and is provided with two long sides and two short sides, the top side and the bottom side of the frame are long sides, and the side edge of the frame is a short side; the foot stand is arranged on the side edge of the frame, and the expansion frame is detachably arranged on the top edge of the frame; the supporting clamp mechanism is arranged between the expanding frame and the top edge of the frame;

the supporting clamp mechanism comprises a supporting column, one end of the supporting column supports against the expanding frame, and the other end of the supporting column supports against the top edge of the frame.

In one embodiment, the supporting clamp mechanism comprises clamping components, and the clamping components are arranged at two ends of the supporting column.

In one embodiment, the clamping assembly comprises: the driving clamping plate, the driven clamping plate, the elastic sheet and the locking bolt;

the driven clamping plate is fixedly arranged on the supporting column, the elastic sheet is provided with a folded angle, one end of the elastic sheet is fixedly arranged on the supporting column, and the other end of the elastic sheet is fixedly connected with the driving clamping plate; the locking bolt penetrates through the driving clamping plate, and a threaded hole matched with the locking bolt is formed in the supporting column.

In one embodiment, the expansion frame comprises a cross beam and upright columns arranged at two ends of the cross beam, and the upright columns are connected with the cross beam through a fixing plate.

In one embodiment, a reinforcing rod is further arranged between the upright post and the cross beam.

In one embodiment, a limit guide rod is arranged on the upright post, a limit guide hole matched with the limit guide rod is formed in the top edge of the frame, and the limit guide rod is matched with the limit guide hole to realize the plug-in connection of the expansion frame and the top edge of the frame.

In one embodiment, the foot rest comprises: the bottom rod, the main supporting rod and the auxiliary supporting rod are arranged on the bottom rod;

the bottom rod is placed on the ground and is fixedly connected with the tail end of the main supporting rod; the frame is mounted on the supporting main rod; one end of the auxiliary supporting rod is hinged to the bottom rod, and the other end of the auxiliary supporting rod is connected with the main supporting rod through a locking assembly.

In one embodiment, the locking assembly includes a cushion block and a positioning bolt, the positioning bolt penetrates through the cushion block, and a positioning hole matched with the positioning bolt is formed in the support main rod.

In one embodiment, the support auxiliary rod is a telescopic rod structure.

In one embodiment, the support sub-bar comprises: the sleeve rod, the movable rod and the locking screw; the sleeve rod is hinged to the locking assembly, the movable rod is hinged to the bottom rod, the sleeve rod is sleeved on the movable rod in a sliding mode, and the locking screw penetrates through the sleeve rod and abuts against the movable rod.

In conclusion, the expandable projection screen frame can select whether to expand the projection screen frame according to needs, so that the expandable projection screen frame is matched with the selected screen size direction, and the film watching effect is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an expandable projection screen frame according to the present invention when not expanded;

FIG. 2 is a schematic structural diagram of the expandable projection screen frame of the present invention during expansion;

FIG. 3 is a schematic plan view of the expandable projection screen of FIG. 2 in an expanded state;

FIG. 4 is an enlarged view taken at A of FIG. 2;

FIG. 5 is a schematic structural view of the support clamp mechanism shown in FIG. 2;

FIG. 6 is a schematic structural view of the expandable projection screen frame shown in FIG. 1;

FIG. 7 is a schematic view of the locking assembly engaged with the support rod;

fig. 8 is a partial structural view of the support sub-bar shown in fig. 6.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides an expandable projection screen frame 10, aiming at expanding the screen frame according to the size of the screen, so that the screen frame is matched with the selected screen size direction, and further improving the effect of viewing the shadow. As shown in fig. 1 and 2, the expandable projection screen frame 10 of the present invention includes: frame 100, foot rest 200, expansion frame 300, and support clip mechanism 400.

As shown in fig. 2 and 3, the frame 100 has a rectangular structure having two long sides and two short sides, the top side 110 and the bottom side of the frame 100 are long sides, and the side 120 of the frame 100 is a short side. The foot stand 200 is mounted to the side edge 120 of the frame 100, the expandable frame 300 is detachably mounted to the top edge 110 of the frame 100, and the support clip mechanism 400 is disposed between the expandable frame 300 and the top edge 110 of the frame 100. Support clip mechanism 400 includes a support post 410 (shown in FIG. 3), one end of support post 410 being held against the stent 300 and the other end being held against the top edge 110 of frame 100.

During the use, the curtain is installed on frame 100 to can be through dismouting expansion frame 300 on frame 100, thereby change the specification of curtain frame length-width ratio. When the stent 300 is mounted on the frame 100, the short sides of the frame 100 are expanded while the long sides are unchanged, thus changing the aspect ratio specification of the canvas frame. It should be noted that, before the mounting of the expansion frame 300, the curtain is mounted on the frame 100, and the weight of the curtain is mainly supported by the top edge 110 of the frame 100; after installing the support 300, the curtain is attached to the support 300, which means that the support 300 takes the major weight of the curtain. Furthermore, in order to conveniently install the expanding frame 300, the expanding frame 300 needs to be more portable, and the size of the steel frame of the expanding frame 300 is smaller than that of the frame 100, so that the expanding frame 300 is easy to bend and deform after hanging the curtain, therefore, the expandable projection curtain frame 10 of the utility model is provided with a supporting clip mechanism 400 besides the expanding frame 300 for supporting the expanding frame 300 to prevent the expanding frame 300 from bending and deforming.

The following describes the structure of the expanding frame 300 and the supporting clip mechanism 400 of the expandable projection screen frame 10 with reference to the embodiment:

in this embodiment, as shown in fig. 3 and 4, the expansion frame 300 includes a beam 310 and columns 320 disposed at two ends of the beam 310, and the columns 320 are connected to the beam 310 through a fixing plate 330. Preferably, a reinforcing bar 340 is further disposed between the upright 320 and the cross beam 310. Furthermore, a limiting guide rod 321 is arranged on the upright post 320, a limiting guide hole 111 matched with the limiting guide rod 321 is formed in the top edge 110 of the frame 100, and the limiting guide rod 321 is matched with the limiting guide hole 111 to realize the plug-in connection between the expansion frame 300 and the top edge 110 of the frame 100.

In this embodiment, as shown in fig. 5, the supporting clip mechanism 400 includes a clipping component 420, and the clipping component 420 is disposed at two ends of the supporting column 410. The clamping assembly 420 includes: a driving clamp plate 421, a driven clamp plate 422, an elastic piece 423 and a locking bolt 424. Wherein, driven splint 422 fixed mounting is on support column 410, and elastic piece 423 has the dog-ear, and one end fixed mounting of elastic piece 423 is on support column 410, and its other end and initiative splint 421 fixed connection, and elastic piece 423 has elastic force. The locking bolt 424 penetrates the active clamp plate 421, and the supporting column 410 is provided with a threaded hole 411 matched with the locking bolt 424. Tightening the locking bolt 424 drives the driving clamp 421 to move closer to or away from the driven clamp 422, so that the clamping assembly 420 clamps the top edge 110 of the frame 100 or the beam 310 of the expandable frame 300. The specific working principle will be explained below.

The working principle of the expanding frame 300 and the supporting clip mechanism 400 will be described with reference to the above structure, please refer to fig. 2, fig. 4 and fig. 5 together:

when the frame 100 needs to be expanded, as shown in fig. 4, the expanding frame 300 is installed on the top edge 110 of the frame 100, and the limit guide rod 321 of the upright 320 is inserted into the limit guide hole 111 of the top edge 110, so as to realize the quick connection between the expanding frame 300 and the frame 100. Then, hanging the curtain on the expansion frame 300; further, in order to prevent the expansion frame 300 from shaking and prevent the expansion frame 300 from bending, a support clip mechanism 400 is provided between the expansion frame 300 and the frame 100. Specifically, in the initial state, a large gap exists between the driving clamp plate 421 and the driven clamp plate 422 of the clamping assembly 420; when the device is installed, the clamping assemblies 420 at the two ends of the supporting column 410 clamp the beam 310 of the expandable frame 300 and the top edge 110 of the frame 100, respectively, so that the driving clamp 421 and the driven clamp 422 wrap the beam 310 or the top edge 110; subsequently, the locking bolt 424 is tightened, so that the driving clamp plate 421 is driven to approach the driven clamp plate 422 against the elastic force of the elastic piece 423, and the driving clamp plate 421 and the driven clamp plate 422 stably clamp the cross beam 310 or the top edge 110. After clamping, the cross beam 310 is supported by the supporting column 410, and the gravity acting on the cross beam 310 is distributed to the top edge 110, so that the cross beam 310 is prevented from bending and deforming under pressure;

when expansion is not desired, the stent 300 is removed from the top edge 110 of the frame 100. Specifically, the locking bolt 424 needs to be loosened, and at this time, the driving clamp plate 421 will be away from the driven clamp plate 422 under the elastic action of the elastic piece 423, so that the gap between the driving clamp plate 421 and the driven clamp plate 422 is enlarged, and thus, the clamping assembly 420 no longer clamps the cross beam 310 or the top edge 110, and the supporting clamp mechanism 400 can be smoothly removed. Subsequently, the limit guide rod 321 is drawn out from the limit guide hole 111, so that the expansion frame 300 is separated from the frame 100.

It should be noted that the expansion process does not need to be connected through bolts, so that the expansion is more convenient. Moreover, the mounting of the expanding frame 300 is further fixed by the supporting clamp mechanism 400, so that the expanding frame 300 is not easy to shake. Further, the supporting clip mechanism 400 also plays a role of auxiliary support, the supporting clip mechanism 400 is installed in the middle section of the beam 310 of the expansion frame 300, and the force received by the beam 310 can be transmitted to the frame 100, so that the beam 310 is prevented from being stressed to generate bending deformation, and the service life of the expansion frame 300 is prolonged.

In order to realize more stable erection of the expandable projection screen frame 10, the foot rest 200 is specially designed, specifically:

as shown in fig. 6, the foot stand 200 includes: a bottom pole 210, a support main pole 220, and a support sub pole 230. The bottom pole 210 is placed on the ground, and the bottom pole 210 is fixedly connected with the end of the main supporting pole 220. The support main lever 220 is mounted with the frame 100. One end of the auxiliary support rod 230 is hinged to the bottom rod 210, and the other end of the auxiliary support rod 230 is connected to the main support rod 220 through a locking assembly 240.

Further, as shown in fig. 7, the locking assembly 240 includes a cushion block 241 and a positioning bolt 242, the positioning bolt 242 penetrates through the cushion block 241, and the supporting main rod 220 is provided with a positioning hole 221 matched with the positioning bolt 242.

Preferably, the support sub-bar 230 is a telescopic bar structure. As shown in fig. 8, the support sub-rod 230 includes: a sleeve rod 231, a movable rod 232, and a locking screw 233. The loop bar 231 is hinged with the locking component 240, the movable bar 232 is hinged with the bottom bar 210, the loop bar 231 is sleeved on the movable bar 232 in a sliding manner, and the locking screw 233 penetrates through the loop bar 231 and abuts against the movable bar 232.

The bottom pole 210, the main support pole 220 and the sub support pole 230 are assembled into a planar tripod, so that the stability of the structure of the foot stand 200 can be ensured. Furthermore, in order to make the tripod 200 more practical, the planar tripod can be adjusted according to practical needs. Specifically, the position of the locking assembly 240 on the supporting main rod 220 can be adjusted according to actual requirements by loosening the positioning bolt 242, and after the position is adjusted to a proper position, the positioning bolt 242 is tightened, so that the positioning bolt 242 passes through the cushion block 241 and the positioning hole 221, and the locking assembly 240 is fixed. Along with the adjustment of the position of the locking assembly 240, the length of the support secondary rod 230 will also change, the sleeve rod 231 of the support secondary rod 230 is slidably sleeved on the movable rod 232, so that the length of the support secondary rod 230 can be telescopically adjusted, and the locking screw 233 is used for limiting the movable rod 232, for example, when the locking screw 233 is tightened, the limiting movable rod 232 is pressed and cannot slide in the sleeve rod 231, so that the length of the support secondary rod 230 is fixed; when the locking screw 233 is loosened, the movable rod 232 is no longer restricted from being pressed, and can smoothly slide in the sleeve rod 231, so that the length of the support sub-rod 230 can be adjusted. In this way, the length of the support sub-rod 230 can be adjusted by only adjusting the tightness of the locking screw 233.

In summary, the expandable projection screen frame 10 of the present invention can select whether to expand the projection screen frame according to the requirement, so that the expandable projection screen frame matches with the selected screen size direction, thereby improving the effect of viewing the image.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An expandable projection screen frame, comprising: the device comprises a frame, a foot rest, a stretching frame and a supporting clamp mechanism;

2. The expandable projection screen frame of claim 1, wherein the supporting clip mechanism comprises a clamping component, and the clamping component is arranged at two ends of the supporting column.

3. An expandable projection screen holder according to claim 2, wherein the clamping assembly comprises: the driving clamping plate, the driven clamping plate, the elastic sheet and the locking bolt;

4. An expandable projection screen frame as claimed in claim 1, wherein the expandable frame comprises a beam and columns disposed at two ends of the beam, and the columns are connected to the beam through a fixing plate.

5. An expandable projection screen frame as claimed in claim 4, wherein a reinforcing bar is further provided between the upright and the cross member.

6. The expandable projection curtain frame as claimed in claim 4, wherein the upright posts are provided with limiting guide rods, the top edge of the frame is provided with limiting guide holes matched with the limiting guide rods, and the limiting guide rods are matched with the limiting guide holes to realize the plug-in connection of the expansion frame and the top edge of the frame.

7. An expandable projection screen frame as claimed in claim 1, wherein the foot rest comprises: the bottom rod, the main supporting rod and the auxiliary supporting rod are arranged on the bottom rod;

8. The expandable projection screen frame as claimed in claim 7, wherein the locking assembly comprises a cushion block and a positioning bolt, the positioning bolt penetrates through the cushion block, and a positioning hole matched with the positioning bolt is formed on the supporting main rod.

9. An expandable projection screen frame as claimed in claim 7, wherein the support sub-rod is a telescopic rod structure.

10. An expandable projection screen frame as claimed in claim 9, wherein the support sub-bar comprises: the sleeve rod, the movable rod and the locking screw; the sleeve rod is hinged to the locking assembly, the movable rod is hinged to the bottom rod, the sleeve rod is sleeved on the movable rod in a sliding mode, and the locking screw penetrates through the sleeve rod and abuts against the movable rod.