CN216083393U

CN216083393U - Projection curtain frame

Info

Publication number: CN216083393U
Application number: CN202122737285.5U
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: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-18
Anticipated expiration: 2031-11-09

Abstract

The utility model provides a projection screen frame, which comprises: the curtain comprises a curtain, a supporting device, a center device and a tripod device, wherein the center device is connected with the supporting device and the tripod device, and the supporting device is connected with the center device and the curtain. The central device comprises a base and a mode switching component matched with the base. The mode switching assembly comprises a sleeve-joint piece and a shaft rotating piece, the shaft rotating piece is rotatably arranged on the base, the sleeve-joint piece is hinged on the shaft rotating piece, a first clamping groove and a second clamping groove matched with the sleeve-joint piece are formed in the base, and elastic clamping jaws are arranged on the groove walls of the first clamping groove and the second clamping groove. The projection screen cloth rack can switch the projection mode of the vertical screen or the horizontal screen at will, thereby being convenient for users to use and improving the viewing experience.

Description

Projection curtain frame

Technical Field

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

Background

The projection curtain is mainly used in the occasions such as movies, offices, home theaters, large conferences and the like, and the projector projects received image signals onto the projection curtain, so that the multi-person watching is facilitated. When the projection site is not provided with the fixed curtain, the temporary projection curtain is also needed to be matched with the projection curtain frame for use. During projection, some occasions need vertical screen projection, such as projection mobile phone screen operation; there are some occasions when a landscape projection is required, such as projecting a movie or television work. However, the traditional projection screen frame can only project a vertical screen or a horizontal screen, and a user needs to select different projection screen frames according to actual needs, so that the use is not convenient enough.

Therefore, how to design a projection screen frame, the projection screen frame can be switched to the vertical screen or the horizontal screen at will, the convenience of a user can be used, the shadow watching experience is improved, and the technical problem needs 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 a projection screen cloth frame which can be used for switching the projection mode of a vertical screen or a horizontal screen at will, so that the use by a user is facilitated, and the film watching experience is improved.

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

a projection screen holder, comprising: the curtain comprises a curtain, a supporting device, a central pivot device and a tripod device, wherein the central pivot device is connected with the supporting device and the tripod device, and the supporting device is connected with the central pivot device and the curtain;

the central device comprises a base and a mode switching component matched with the base;

the mode switching assembly comprises a sleeve-joint piece and a shaft rotating piece, the shaft rotating piece is rotatably arranged on the base, the sleeve-joint piece is hinged on the shaft rotating piece, a first clamping groove and a second clamping groove matched with the sleeve-joint piece are formed in the base, and elastic clamping jaws are arranged on the groove walls of the first clamping groove and the second clamping groove.

In one embodiment, the tripod apparatus comprises a main frame rod, and the socket is sleeved on the main frame rod.

In one embodiment, the supporting device comprises a supporting rod, one end of the supporting rod is connected with the base of the central device, and the other end of the supporting rod is connected with the edge of the curtain.

In one embodiment, a locking groove is formed in a base of the central device, an elastic clamping jaw is arranged on a groove wall of the locking groove, and one end of the supporting rod is accommodated in the locking groove.

In one embodiment, the end of the support rod is provided with a hinge pin, and the support rod is rotatably arranged on the base through the hinge pin.

In one embodiment, the number of the supporting rods is four, and the end parts of the four supporting rods are connected with the corners of the curtain.

In one embodiment, the main frame rod is a telescopic rod structure.

In one embodiment, the main frame rod comprises a lifting rod and a fixing rod, the fixing rod is sleeved on the lifting rod, an elastic adjusting piece is arranged at the joint of the lifting rod and the fixing rod, and the elastic adjusting piece controls the lifting rod to slide up and down relatively.

In one embodiment, the tripod apparatus comprises a foot rest assembly comprising: a sliding block, a support leg and a connecting rod;

the sliding block is sleeved on the main frame rod in a sliding mode, the sliding block is hinged to one end of the supporting leg, one end of the connecting rod is hinged to the end portion of the main frame rod, and the other end of the connecting rod is hinged to the supporting leg.

In one embodiment, the other end of the supporting foot is provided with an anti-skidding foot pad.

In conclusion, the projection screen frame can switch the projection mode of the vertical screen or the horizontal screen at will, thereby being convenient for users to use and improving the viewing experience.

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 a projection screen in a vertical screen mode according to the present invention;

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

FIG. 3 is an enlarged view taken at A of FIG. 1;

FIG. 4 is a partially exploded schematic view of the hub device shown in FIG. 3;

FIG. 5 is a schematic view of the status of the hub device during mode switching;

FIG. 6 is a schematic view showing the fitting relationship between the hinge device and the support rod after being contracted;

FIG. 7 is a schematic view of the projection screen frame of the present invention after being retracted;

figure 8 is a schematic view of the tripod apparatus shown in figure 2.

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 a projection screen frame 10, aiming at switching the projection mode of a vertical screen or a horizontal screen according to the actual requirement. As shown in fig. 1 and 2, the projection screen frame 10 includes: the curtain 100, the supporting device 200, the central device 300 and the tripod device 400, wherein the central device 300 connects the supporting device 200 and the tripod device 400, and the supporting device 200 connects the central device 300 and the curtain 100.

As shown in fig. 3, the hub device 300 includes a base 310 and a mode switching assembly 320 cooperating with the base 310.

Specifically, as shown in fig. 4, the mode switching assembly 320 includes a socket member 321 and a shaft rotating member 322, the shaft rotating member 322 is rotatably disposed on the base 310, the socket member 321 is hinged on the shaft rotating member 322, the base 310 is provided with a first engaging groove 311 and a second engaging groove 312, which are matched with the socket member 321, and the groove walls of the first engaging groove 311 and the second engaging groove 312 are both provided with an elastic clamping jaw 313.

In the present embodiment, as shown in fig. 2 and 3, the tripod apparatus 400 includes a main frame rod 410, and the socket 321 is socket connected to the main frame rod 410. In use, the main frame bar 410 is fixed, and the mode switching assembly 320 connects the main frame bar 410 and the base 310, and enables the base 310 to rotate relative to the main frame bar 410. When in the vertical screen projection mode, the base 310 rotates to the socket 321 to be accommodated in the first engaging groove 311; when in the landscape projection mode, the base 310 rotates to the socket 321 to be received in the second engaging groove 312. Moreover, the socket 321 is clamped by the elastic clamping jaw 313 no matter the socket 321 is in the first clamping groove 311 or the second clamping groove 312, so as to ensure that the socket 321 can keep stable connection with the base 310. The specific working principle will be explained below.

In the present embodiment, as shown in fig. 2 and 4, the supporting device 200 includes a supporting rod 210, one end of the supporting rod 210 is connected to the base 310 of the central device 300, and the other end of the supporting rod 210 is connected to the edge of the curtain 100. Preferably, the base 310 of the central device 300 is provided with a locking groove 314, the wall of the locking groove 314 is also provided with an elastic clamping jaw 313, and one end of the supporting rod 210 is accommodated in the locking groove 314. Further, in the present embodiment, the number of the supporting rods 210 is four, and the ends of the four supporting rods 210 are connected to the corners of the curtain 100. When in use, one end of each of the four support rods 210 is fastened in the locking groove 314, so that the four support rods 210 radially extend outwards; the edge of the curtain 100 is connected to the other end of the support rod 210, so that the support rod 210 can completely unfold the curtain 100.

The operation of the projection screen frame 10 of the present invention will be explained with reference to the above structure:

in use, as shown in fig. 3, the center device 300 is disposed on the main frame rod 410, the support rods 210 extend radially outward around the center device 300, and the edge of the curtain 100 is connected to the ends of the support rods 210, i.e., the support rods 210 completely unfold the curtain 100. The socket 321 of the hub device 300 is plugged into an end of the main frame rod 410, and the socket 321 and the pivot rotating part 322 cooperate to enable the base 310 to rotate relative to the main frame rod 410. Specifically, the method comprises the following steps:

when the initial state is the portrait projection mode, the sleeve 321 is accommodated in the first engaging groove 311 and clamped by the elastic clamping jaw 313 of the first engaging groove 311, and at this time, the state of the center device 300 is as shown in fig. 3, and the state of the projection screen frame 10 is as shown in fig. 1. When the projection mode needs to be switched, as shown in fig. 5, an operator only needs to pull the socket member 321 to overcome the clamping of the elastic clamping jaw 313 and separate from the first clamping groove 311; then, the curtain 100 and the supporting device 200 are rotated by 90 degrees, and correspondingly, the base 310 of the central device 300 is also rotated together, that is, the socket member 321 and the main frame rod 410 are kept stationary, and the base 310 is rotated by 90 degrees by taking the shaft rotating member 322 as a center, so that the curtain 100 is changed from a vertical screen to a horizontal screen; subsequently, the socket 321 is accommodated in the second engaging groove 312, and is held and fixed by the elastic claw 313 of the second engaging groove 312. Thus, the switching of the projection mode is completed, and the state of the projection screen frame 10 after the switching is as shown in fig. 2.

Further, in order to make the projection screen frame 10 more convenient to carry and assemble and reduce the steps of disassembly and assembly, the present invention also makes a special design for the projection screen frame 10:

in this embodiment, as shown in fig. 4, the end of the supporting rod 210 is provided with a hinge pin 211, and the supporting rod 210 is rotatably provided on the base 310 through the hinge pin 211. When the projection screen frame 10 is used, the end of the support rod 210 is accommodated in the locking groove 314 and clamped by the elastic clamping jaw 313; when the projection screen frame 10 needs to be retracted, the screen 100 is removed, and then the support rod 210 is forced to rotate around the axis of the hinge pin 211, so that the support rod 210 overcomes the clamping force of the elastic clamping jaws 313 and is separated from the locking groove 314, and the support rod 210 is perpendicular to the opening direction of the locking groove 314, as shown in fig. 6 and 7, so that the support rod 210 extending radially can be retracted.

In the present embodiment, as shown in fig. 7 and 8, the main frame rod 410 is a telescopic rod structure. Preferably, the main frame rod 410 comprises a lifting rod 411 and a fixing rod 412, the fixing rod 412 is sleeved on the lifting rod 411, an elastic adjusting piece 413 is arranged at the joint of the lifting rod 411 and the fixing rod 412, and the elastic adjusting piece 413 controls the lifting rod 411 to slide up and down relatively. When the tripod device 400 is used, the clamping degree between the lifting rod 411 and the fixing rod 412 can be adjusted by rotating the tightness adjusting piece 413, so that whether the lifting rod 411 can do telescopic motion relative to the fixing rod 412 is controlled, and the length of the main frame rod 410 when the tripod device 400 is folded or unfolded is changed. Thus, the height can be conveniently adjusted when the portable electric scooter is used or the size can be conveniently reduced when the portable electric scooter is carried.

In one embodiment, as shown in FIG. 8, tripod apparatus 400 includes a tripod assembly 420. Wherein, foot rest assembly 420 includes: sliding block 421, support leg 422, and link 423. The sliding block 421 is slidably sleeved on the fixing rod 412 of the main frame rod 410, and the sliding block 421 is hinged with one end of the supporting leg 422; one end of the link 423 is hinged to the end of the fixing rod 412, and the other end is hinged to the leg 422. In use, the operator drives the sliding block 421 to slide along the fixing rod 412; under the drive of sliding block 421, contained angle between stabilizer blade 422 and the dead lever 412, contained angle between stabilizer blade 422 and the connecting rod 423 all grow, so stabilizer blade 422 opens, and the scaffold subassembly 420 after opening can stably place subaerial to provide the support for main frame pole 410.

Preferably, as shown in fig. 8, the other end of the supporting leg 422 is provided with an anti-slip leg 424, and the anti-slip leg 424 of the supporting leg 422 contacts the ground after the foot rest assembly 420 is opened, which can effectively increase the friction force between the supporting leg 422 and the ground, so that the tripod apparatus 400 is not easy to slide in the projection process, and the stability of the projection screen frame 10 is increased.

In summary, the projection screen frame 10 of the present invention can switch the projection mode of the vertical screen or the horizontal screen at will, thereby facilitating the use of the user and improving the viewing experience.

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. A projection screen holder, comprising: the curtain comprises a curtain, a supporting device, a central pivot device and a tripod device, wherein the central pivot device is connected with the supporting device and the tripod device, and the supporting device is connected with the central pivot device and the curtain;

2. The projected screen frame of claim 1, wherein the tripod arrangement includes a main frame bar, and wherein the socket is sleeved on the main frame bar.

3. The projection screen frame of claim 1, wherein the support device comprises a support rod, one end of the support rod is connected to the base of the hub device, and the other end of the support rod is connected to the edge of the screen.

4. The projection screen frame as claimed in claim 3, wherein the base of the central device is provided with a locking groove, the wall of the locking groove is provided with an elastic clamping jaw, and one end of the supporting rod is accommodated in the locking groove.

5. The projection screen frame of claim 4, wherein the end of the support rod is provided with a hinge pin, and the support rod is rotatably arranged on the base through the hinge pin.

6. The projection screen frame of claim 3, wherein the number of the support rods is four, and the ends of the four support rods are connected with the corners of the screen.

7. The projection screen frame of claim 2, wherein the main frame bar is a telescoping bar structure.

8. The projection screen frame as claimed in claim 7, wherein the main frame rod comprises a lifting rod and a fixing rod, the fixing rod is sleeved on the lifting rod, a tightness adjusting piece is arranged at the joint of the lifting rod and the fixing rod, and the tightness adjusting piece controls the lifting rod to slide up and down relatively.

9. The projection screen holder of claim 7, wherein the tripod arrangement includes a foot stand assembly comprising: a sliding block, a support leg and a connecting rod;

10. The projection screen frame of claim 9, wherein the other end of the leg is provided with an anti-slip foot pad.