CN210270502U

CN210270502U - High school's teaching is with projecting apparatus screen that can change width

Info

Publication number: CN210270502U
Application number: CN201921560826.8U
Authority: CN
Inventors: 沈华峰
Original assignee: Zhejiang Fanhuang Industry Co Ltd
Current assignee: Zhejiang Fanhuang Industry Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-04-07
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a but high school's teaching is with projecting apparatus screen that can change width, including cover casing, spool and clearance mechanism, the upper end surface welding of cover casing is connected with the spacing ring, and the internal connection of spacing ring has spacing inserted bar, both ends all are connected with the gear piece about the spool, the surface of gear piece is connected with the control chain, two bags of below are provided with the supporting shoe about the spool, the both ends outside is provided with the screen side body about the screen body, the bottom of the screen body is connected with the pull rod down, both ends around the lower surface that clearance mechanism is located the cover casing. This high school's teaching is with projecting apparatus screen that can change width compares with current ordinary projecting apparatus screen, can carry out spacing fixed to both ends about the screen, maintains its stability in the use, prevents that it from receiving blowing of classroom inside window wind and rocking, influences the demonstration of its surface projection content to the use of teaching causes the influence.

Description

High school's teaching is with projecting apparatus screen that can change width

Technical Field

The utility model relates to a projecting apparatus screen technical field is used in the teaching, specifically is a projecting apparatus screen that can change width is used in high school's teaching.

Background

A projector, also called a projector, is a device that can project images or videos onto a curtain, and is widely used in homes, offices, schools, and entertainment places, and a projector screen is a tool used in movies, offices, home theaters, large conferences, and the like, and is used to display images and video files.

The projector screen for the teaching of high school at present can not fix the screen in the use, leads to the screen to receive the influence of external wind-force easily when using, and appears rocking, influences the demonstration of the easy projection content to influence the projection effect of this screen, the user demand of satisfying people that can not be fine, to above-mentioned condition, carries out technical innovation on the projector screen basis for the teaching of high school at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but high school's teaching is with projecting apparatus screen that can change width to provide general projecting apparatus screen for high school's teaching in solving above-mentioned background and in the use, can not fix the screen, lead to the screen to receive the influence of external wind-force easily when using, and appear rocking, influence the demonstration of easy projection content, thereby influence the projection effect of this screen, the user demand problem of satisfying people that can not be fine.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high school's teaching is with projecting apparatus screen that can change width, includes cover casing, spool and clearance mechanism, the upper end surface welded connection of cover casing has the spacing ring, and the internal connection of spacing ring has spacing inserted bar, both ends all are connected with the gear piece about the spool, and the spool is located the inside of cover casing, the surface of gear piece is connected with the control chain, two bag belows are provided with the supporting shoe about the spool, and the fixed surface of spool has the screen body, the both ends outside is provided with the screen side body about the screen body, and is provided with stop mechanism about the screen side body, the bottom of the screen body is connected with down-draw bar, both ends around the lower surface that clearance mechanism is located the cover casing.

Preferably, the limiting mechanism comprises a fixing screw rod, a limiting frame, a concave hole, a hinge and a fixture block, the fixing screw rod is arranged inside the edge of the top end outer surface of the limiting frame, the fixture block is arranged on the surface of the front end of the limiting frame, the hinge is connected to the surface of the outer side of the fixture block through screws, and the concave hole is located inside the left end and the right end of the screen side body.

Preferably, the outer surface structure of the rear end of the fixture block is matched with the inner surface structure of the concave hole, and the limiting frame is matched with the side body of the screen through the concave hole, the hinge and the fixture block to form an integrated structure.

Preferably, the inner surface structure of the limiting frame is matched with the outer surface structures of the left end and the right end of the lower pull rod, and the limiting frames are symmetrically distributed around the central line of the lower pull rod.

Preferably, clearance mechanism includes that fixed plate, leading dust absorption are cotton and rearmounted dust absorption are cotton, and the fixed plate is located the bottom surface of cover casing, leading dust absorption is cotton to be located the front end lower surface of cover casing, and rearmounted dust absorption is cotton to be located the rear end lower surface of cover casing.

Preferably, the front dust collection cotton and the rear dust collection cotton respectively form a detachable structure through the fixing screw rod and the fixing plate, and the rear end surface of the front dust collection cotton and the front end surface of the rear dust collection cotton are respectively attached to the outer surfaces of the front end and the rear end of the screen body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model can limit and fix the left and right ends of the screen when the projector screen is used by arranging the fixing screw, the limiting frame, the concave hole, the hinge and the fixture block, maintain the stability of the projector screen in the using process, and prevent the projector screen from shaking due to the blowing of window wind inside a classroom to influence the display of the projection content on the surface of the projector screen, thereby influencing the use of teaching;

2. the utility model can limit the lower pull rod in the screen descending adjusting process by arranging the limiting frame and the lower pull rod, maintain the stability of the screen in the descending process, be beneficial to the use of the screen and keep the surface level of the screen;

3. the utility model discloses a fixed plate, the cotton setting of leading dust absorption and rearmounted dust absorption, can clear up the surface of screen, maintain the cleanliness factor on screen surface, so that the screen uses, avoid the dust to glue on the surface of screen, influence the definition of its picture, can carry out automatic clearance to the screen simultaneously, the degree of automation of this screen has been improved, also can replace the use of manpower, the convenience of screen clearance has been improved, avoid the screen height too high, and improve the clearance degree of difficulty of clearance person.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

fig. 3 is the utility model discloses the clearance mechanism looks sideways at the schematic diagram.

In the figure: 1. a cover housing; 2. a limiting ring; 3. a limiting inserted rod; 4. a control chain; 5. a gear block; 6. a reel; 7. a support block; 8. a limiting mechanism; 801. fixing the screw rod; 802. a limiting frame; 803. concave holes; 804. a hinge; 805. a clamping block; 9. a screen body; 10. a screen side body; 11. a lower pull rod; 12. a cleaning mechanism; 1201. a fixing plate; 1202. the front dust-collecting cotton is arranged; 1203. the rear dust-absorbing cotton is arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a projector screen with changeable width for high school teaching comprises a housing 1, a scroll 6 and a cleaning mechanism 12, wherein the upper end surface of the housing 1 is connected with a limit ring 2 in a welding manner, the interior of the limit ring 2 is connected with a limit inserted rod 3, the left end and the right end of the scroll 6 are both connected with gear blocks 5, the scroll 6 is positioned in the housing 1, the outer surface of the gear block 5 is connected with a control chain 4, support blocks 7 are arranged below the left bag and the right bag of the scroll 6, a screen body 9 is fixed on the outer surface of the scroll 6, screen side bodies 10 are arranged on the outer sides of the left end and the right end of the screen body 9, limit mechanisms 8 are arranged on the outer sides of the left end and the right end of the screen side bodies 10, each limit mechanism 8 comprises a fixing screw 801, a limit frame 802, a concave hole 803, a hinge 804 and a fixture block 805, a fixing screw 801 is arranged inside the edge of the top end of the limit frame 802, a fixture, the outer side surface of the clamping block 805 is connected with a hinge 804 by screws, the concave hole 803 is positioned inside the left end and the right end of the screen side body 10, the outer surface structure of the rear end of the clamping block 805 is matched with the inner surface structure of the concave hole 803, and the limiting frame 802 forms an integrated structure with the screen side body 10 through the mutual matching among the concave hole 803, the hinge 804 and the clamping block 805, so that the left end and the right end of the screen can be limited and fixed when the projector screen is used, the stability of the projector screen in the using process is maintained, the projector screen is prevented from being blown by window wind inside a classroom to shake, the display of the surface projection content of the projector screen is prevented from being influenced, the teaching use is influenced, the inner surface structure of the limiting frame 802 is matched with the outer surface structure of the left end and the right end of the lower pull rod 11, and the limiting frames 802 are symmetrically distributed, the lower pull rod 11 can be limited in the screen descending adjustment process, the stability of the screen in the descending process is maintained, the use of the screen is facilitated, and the surface level of the screen is kept;

the bottom end of the screen body 9 is connected with a lower pull rod 11, the cleaning mechanism 12 is located at the front end and the rear end of the lower surface of the housing body 1, the cleaning mechanism 12 comprises a fixing plate 1201, a front dust-absorbing cotton 1202 and a rear dust-absorbing cotton 1203, the fixing plate 1201 is located on the bottom end surface of the housing body 1, the front dust-absorbing cotton 1202 is located on the front end lower surface of the housing body 1, the rear dust-absorbing cotton 1203 is located on the rear end lower surface of the housing body 1, the front dust-absorbing cotton 1202 and the rear dust-absorbing cotton 1203 respectively form a detachable structure through a fixing screw 801 and the fixing plate 1201, the rear end surface of the front dust-absorbing cotton 1202 and the front end surface of the rear dust-absorbing cotton 1203 are respectively attached to the front end and the rear end outer surfaces of the screen body 9, so that the screen can clean the surface of the screen when in use, the cleanliness of the screen surface is maintained, the screen is convenient to use, dust is prevented from being attached to the surface of, meanwhile, the screen can be automatically cleaned, the automation degree of the screen is improved, manpower can be replaced, the convenience of cleaning the screen is improved, the screen is prevented from being too high, and the cleaning difficulty of a cleaner is improved.

The working principle is as follows: when the projector screen with the changeable width for high school teaching is used, firstly, the limiting ring 2 at the top end of the screen is connected with the limiting ring 2 which is arranged on the surface of a classroom wall in advance, then the limiting inserted rod 3 is used and inserted into the limiting ring 2 to limit and fix the screen so as to be convenient for the screen to be used, when the screen is used, the control chains 4 at the left and right ends of the screen are manually pulled, the gear blocks 5 are driven to rotate through the connection between the gear blocks 5 at the left and right ends in the shield shell 1, then the reel 6 connected with the inner sides of the gear blocks 5 is driven to rotate, the screen body 9 wound on the surface of the screen body is unreeled, and then the screen body 9 is driven to descend by the pull-down of the lower pull rod 11;

meanwhile, in the descending process of the screen body 9, the front dust-absorbing cotton 1202 and the rear dust-absorbing cotton 1203 on the bottom surface of the cover shell 1 are connected with the outer surfaces of the front end and the rear end of the screen body 9 to clean the surface of the screen body 9 and maintain the cleanliness of the surface of the screen body 9, so that the screen body 9 can be conveniently used, dust is prevented from being adhered to the surface of the screen and affecting the definition of the screen, in the moving process of the lower pull rod 11, the limiting frames 802 at the left end and the right end of the lower pull rod 11 are structurally arranged with the lower pull rod 11 to limit the lower pull rod 11 in the descending regulation process of the screen and maintain the stability of the screen in the descending process, in the descending process of the screen body 9, the using width of the screen can be regulated according to the using requirement of the screen, then the clamping blocks 805 on the surfaces of the limiting frames 802 are rotated through the hinges 804 connected with the clamping blocks, until the rear end surfaces of the clamping blocks 805 are correspondingly connected with the concave holes 803 arranged on the surface of the side edge body 10 of the screen, thereby the projector screen can keep stable when in use, and prevent the projector screen from shaking due to the blowing of window wind in the classroom to influence the display of the projected content on the surface of the projector screen, thereby influencing the use of teaching,

this is the working principle of the projector screen with changeable width for high school teaching.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high school's teaching is with projecting apparatus screen that can change width, includes cover casing (1), spool (6) and clearance mechanism (12), its characterized in that: the utility model discloses a screen, including cover casing (1), limiting ring (2), and the internal connection of limiting ring (2) has spacing inserted bar (3), both ends all are connected with gear piece (5) about spool (6), and spool (6) are located the inside of cover casing (1), the surface of gear piece (5) is connected with control chain (4), two bag belows are provided with supporting shoe (7) about spool (6), and the fixed surface of spool (6) has screen body (9), the both ends outside is provided with screen side body (10) about screen body (9), and the both ends outside is provided with stop gear (8) about screen side body (10), the bottom of screen body (9) is connected with down link (11), both ends around the lower surface that clearance mechanism (12) are located cover casing (1).

2. The screen of claim 1, wherein the width of the projector screen is changeable for teaching in senior high schools: the limiting mechanism (8) comprises a fixing screw rod (801), a limiting frame (802), concave holes (803), hinges (804) and a clamping block (805), the fixing screw rod (801) is arranged inside the edge of the top end outer face of the limiting frame (802), the clamping block (805) is arranged on the surface of the front end of the limiting frame (802), the hinges (804) are connected to the surface of the outer side of the clamping block (805) in a screwed mode, and the concave holes (803) are located inside the left end and the right end of the screen side body (10).

3. The screen of claim 2, wherein the width of the projector screen is changeable for teaching in senior high schools: the outer surface structure of the rear end of the clamping block (805) is matched with the inner surface structure of the concave hole (803), and the limiting frame (802) is matched with the screen side body (10) through the concave hole (803), the hinge (804) and the clamping block (805) to form an integrated structure.

4. The screen of claim 2, wherein the width of the projector screen is changeable for teaching in senior high schools: the inner surface structures of the limiting frames (802) are matched with the outer surface structures of the left end and the right end of the lower pull rod (11), and the limiting frames (802) are symmetrically distributed around the central line of the lower pull rod (11).

5. The screen of claim 1, wherein the width of the projector screen is changeable for teaching in senior high schools: the cleaning mechanism (12) comprises a fixing plate (1201), front dust collection cotton (1202) and rear dust collection cotton (1203), the fixing plate (1201) is located on the bottom end surface of the cover shell body (1), the front dust collection cotton (1202) is located on the lower surface of the front end of the cover shell body (1), and the rear dust collection cotton (1203) is located on the lower surface of the rear end of the cover shell body (1).

6. The screen of claim 5, wherein the width of the projector screen is changeable for teaching in senior high school: the front dust collection cotton (1202) and the rear dust collection cotton (1203) respectively form a detachable structure through the fixing screw (801) and the fixing plate (1201), and the rear end surface of the front dust collection cotton (1202) and the front end surface of the rear dust collection cotton (1203) are respectively attached to the outer surfaces of the front end and the rear end of the screen body (9).