CN113173461B - Multimedia film screen device - Google Patents

Multimedia film screen device Download PDF

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Publication number
CN113173461B
CN113173461B CN202110454571.2A CN202110454571A CN113173461B CN 113173461 B CN113173461 B CN 113173461B CN 202110454571 A CN202110454571 A CN 202110454571A CN 113173461 B CN113173461 B CN 113173461B
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CN
China
Prior art keywords
curtain
winding
rotating shaft
side wall
cleaning
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CN202110454571.2A
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Chinese (zh)
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CN113173461A (en
Inventor
毛晓静
郭佳
宋卉
王晨
刘大卫
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Zhoukou Normal University
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Zhoukou Normal University
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Priority to CN202110454571.2A priority Critical patent/CN113173461B/en
Publication of CN113173461A publication Critical patent/CN113173461A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06G—MECHANICAL OR PRESSURE CLEANING OF CARPETS, RUGS, SACKS, HIDES, OR OTHER SKIN OR TEXTILE ARTICLES OR FABRICS; TURNING INSIDE-OUT FLEXIBLE TUBULAR OR OTHER HOLLOW ARTICLES
    • D06G1/00—Beating, brushing, or otherwise mechanically cleaning or pressure cleaning carpets, rugs, sacks, hides, or other skin or textile articles or fabrics
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs

Abstract

The invention provides a multimedia movie screen device, which belongs to the technical field of multimedia equipment and comprises a screen, a winding part, a supporting part, a cleaning part and a control part, wherein the winding part is arranged in the supporting part and used for winding and unwinding the screen, the control part is arranged in the supporting part, when the winding part winds the screen, the winding part can drive the control part to move in the supporting part, and when the control part moves, the cleaning part can be driven to be attached to the side wall of the screen so as to clean the side wall of the screen. Compared with the prior art, the embodiment of the invention can realize automatic cleaning of the curtain without influencing winding and unwinding of the curtain.

Description

Multimedia film screen device
Technical Field
The invention belongs to the technical field of multimedia equipment, and particularly relates to a multimedia video screen device.
Background
Currently, in the multimedia field, projection screens are widely used.
Current projection curtain is installed in a receiver mostly, drive the curtain through actuating mechanism and unreel from the receiver during use, make the curtain expand perpendicularly, and utilize actuating mechanism to drive the curtain and roll up again and deposit to the receiver is inside when not using, in order to reduce shared space, prevent that the curtain from receiving dust pollution, but the curtain still can be infected with certain dust debris when using the expansion, among the prior art, the clearance to the curtain utilizes clearance layer laminating in curtain one side mostly, remove the self-cleaning that realizes the dust along with the rolling of curtain, but because the laminating of clearance layer, the clearance layer can produce the hindrance effect to the curtain when unreeling the removal, make the unable smooth unreeling of curtain.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an embodiment of the present invention provides a multimedia movie screen device.
In order to solve the technical problems, the invention provides the following technical scheme:
a multimedia video screen device comprises a screen, a winding part, a supporting part, a cleaning part and a control part,
the winding part is arranged in the supporting part and used for winding and unwinding the curtain,
the control part is arranged in the supporting part, when the rolling part rolls the curtain, the rolling part can drive the control part to move in the supporting part, and when the control part moves, the cleaning part can be driven to be attached to the side wall of the curtain so as to clean the side wall of the curtain;
the winding part is right when the curtain unreels, the winding part can drive the control part to be in the inside reverse movement of supporting part, the control part can order about during reverse movement the cleaning part certainly the curtain lateral wall removes to prevent the cleaning part is right the unreeling of curtain produces the hindrance, guarantees unreeling smoothly of curtain.
As a further improvement of the invention: the rolling part comprises a reel arranged inside the supporting part and a driving part used for driving the reel to rotate.
As a further improvement of the invention: the driving part comprises a rotating shaft and a rotating part for driving the rotating shaft to rotate, the rotating shaft penetrates through the scroll and is movably matched with the scroll,
the side wall of the rotating shaft is provided with a limiting part which is used for limiting the rotating shaft and the scroll into a whole;
the control part comprises a pushing part and an elastic supporting part, the pushing part is arranged on the rotating shaft and is used for driving the cleaning part to move so as to drive the cleaning part to be far away from the curtain,
the elastic supporting part is installed inside the supporting part and used for driving the cleaning part to move reversely, and the cleaning part is driven to be attached to the side wall of the curtain.
As a further improvement scheme of the invention: the pushing part comprises a sliding sleeve and a push rod,
a threaded section is arranged at one end of the rotating shaft, the sliding sleeve is sleeved outside the rotating shaft in a threaded manner and is in threaded fit with the threaded section, the push rod is fixedly arranged on the side wall of the sliding sleeve, and the side wall of the sliding sleeve is in sliding connection with the inner wall of the supporting part through a sliding part;
an inclined plane is arranged on one side of the cleaning part, and the push rod is attached to the inclined plane.
As a still further improvement scheme of the invention: the elastic supporting part comprises a support fixedly arranged in the supporting part and a second elastic body fixedly arranged on one side of the support, and one end, far away from the support, of the second elastic body is connected with the cleaning part.
As a still further improvement of the invention: the limiting part is fixedly arranged on a limiting block of the side wall of the rotating shaft, a limiting groove is formed in the end part of the scroll, and the limiting block extends to the inside of the limiting groove and can follow the inside of the limiting groove to rotate.
As a still further improvement scheme of the invention: the sliding part is in including fixed setting the guide bar and the fixed setting of sliding sleeve lateral wall are in the first guide rail of supporting part inner wall, the guide bar is kept away from the one end of sliding sleeve seted up with the draw-in groove of first guide rail looks adaptation, the guide bar passes through draw-in groove and first guide rail sliding fit.
As a still further improvement of the invention: one end of the sliding sleeve is connected with the inner wall of the supporting part through a first elastic body.
As a still further improvement of the invention: the inside damping clamping part that still is provided with of supporting part, the damping clamping part is used for right the spool carries out the centre gripping to when guaranteeing the pivot initial rotation, the spool can obtain certain centre gripping dynamics, and then guarantees that the spool presents quiescent condition, makes and can rotate relatively between pivot and the spool.
As a still further improvement of the invention: the damping clamping part comprises a supporting rod and a damping block, the supporting rod is arranged on one side of the reel, the damping block is arranged on the supporting rod, the supporting rod faces towards one side of the reel, and the damping block is attached to the side wall of the reel.
Compared with the prior art, the invention has the beneficial effects that:
when the rolling part rolls the curtain, the control part can move in the supporting part, so that the cleaning part is driven to move and be attached to the side wall of the curtain, and dust and impurities adhered to the side wall of the curtain are cleaned along with the rolling of the curtain; when rolling portion unreeled the curtain, control division can order about cleaning portion reverse movement in order to remove from the curtain lateral wall at the inside reverse movement of supporting part, and then control division to prevent to influence normally unreeling of curtain because of cleaning portion's existence, compare in prior art, can realize the automatic clearance of curtain when not influencing the curtain and receive and unreel.
Drawings
FIG. 1 is a schematic diagram of a multimedia video screen apparatus;
FIG. 2 is an enlarged view of the area A in FIG. 1;
FIG. 3 is a schematic diagram of a control portion of a multimedia video apparatus;
FIG. 4 is an enlarged view of the area B in FIG. 3;
in the figure: the device comprises a curtain 1, a support part 2, a motor 21, a storage part 22, a reel 23, a first guide rail 24, a rotating shaft 25, a notch 26, a limiting groove 27, a limiting block 28, a cleaning part 3, a slope 31, a control part 4, a guide rod 41, a sliding sleeve 42, a first elastic body 43, a push rod 44, an elastic support part 5, a support seat 51, a second elastic body 52, a second guide rail 53, a slide block 54, a damping clamping part 6, a damping block 61 and a support rod 62.
Detailed Description
The technical solution of the present patent will be further described in detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, this embodiment provides a multimedia video screen apparatus, including a screen 1, a winding portion, a supporting portion 2, a cleaning portion 3 and a control portion 4, where the winding portion is disposed inside the supporting portion 2 and used for winding and unwinding the screen 1, the control portion 4 is disposed inside the supporting portion 2, when the winding portion winds the screen 1, the winding portion can drive the control portion 4 to move inside the supporting portion 2, and when the control portion 4 moves, the cleaning portion 3 can be driven to adhere to a side wall of the screen 1 to clean the side wall of the screen 1; the utility model discloses a curtain, including support portion 2, winding portion, control portion 4, cleaning portion 3, it is right when the curtain 1 unreels, winding portion can drive control portion 4 is in the inside reverse movement of support portion 2, can order about during the 4 reverse movements of control portion cleaning portion 3 certainly the curtain 1 lateral wall removes to prevent cleaning portion 3 is right the unreeling of curtain 1 produces the hindrance, guarantees unreeling smoothly of curtain 1.
When the winding part winds the curtain 1, the control part 4 can move in the supporting part 2, so that the cleaning part 3 is driven to move and be attached to the side wall of the curtain 1, and dust and sundries adhered to the side wall of the curtain 1 are cleaned along with the winding of the curtain 1; when the rolling portion unreeled curtain 1, control unit 4 can be at the inside reverse movement of supporting part 2, and then orders about 3 reverse movements of clearance portion and remove in order to follow curtain 1 lateral wall to prevent to influence normally unreeling of curtain 1 because of the existence of clearance portion 3.
Referring to fig. 1, in an embodiment, the winding portion includes a winding shaft 23 installed inside the supporting portion 2 and a driving portion for driving the winding shaft 23 to rotate, and the winding and unwinding operation of the curtain 1 is realized by driving the winding shaft 23 to rotate forward and backward by the driving portion.
In another embodiment, the winding portion can also include a winding rod (not shown in the figure) fixedly arranged inside the supporting portion 2, a winding rod arranged on one side of the winding rod and a driving motor for driving the winding rod to surround the winding rod for circular motion, the winding rod is driven by the driving motor to surround the winding rod for circular motion, and the winding rod can pull the curtain 1 to move around the winding rod, so that the winding and unwinding operation of the curtain 1 is realized.
Referring to fig. 1 and fig. 2, in an embodiment, the driving portion includes a rotating shaft 25 and a rotating portion for driving the rotating shaft 25 to rotate, the rotating shaft 25 penetrates through the winding shaft 23 and is movably matched with the winding shaft 23, a limiting portion is disposed on a side wall of the rotating shaft 25, and the limiting portion is used for limiting the rotating shaft 25 and the winding shaft 23 into a whole; control part 4 includes promotion portion and resilient support portion 5, promotion portion installs pivot 25 is last, is used for driving clearance portion 3 removes, orders about clearance portion 3 keeps away from curtain 1, resilient support portion installs inside the supporting part 2, is used for driving clearance portion 3 antiport orders about clearance portion laminate extremely 1 lateral wall of curtain.
In the above embodiment, the rotating part may be the motor 21 or the crank.
When the curtain 1 is rolled, the motor 21 drives the rotating shaft 25 to rotate, the rotating shaft 25 can rotate relative to the scroll 23, in the process, the rotating shaft 25 can drive the pushing part to move in the supporting part 2, the elastic supporting part 5 drives the cleaning part 3 to move and be attached to the side wall of the curtain 1 until the limiting part limits the rotating shaft 25 and the scroll 23 into a whole, and at the moment, the rotating shaft 25 drives the scroll 23 to synchronously rotate, so that the rolling of the curtain 1 is realized; when the curtain 1 unreels, motor 21 drives pivot 25 antiport, and pivot 25 is compared in the spool 23 rotation, and this in-process, pivot 25 can drive promotion portion is at the inside antiport of supporting part 2 to drive clearance portion 3 antiport and overcome the holding power of elastic support portion 5, remove clearance portion 3 from curtain 1 lateral wall, realize unreeling smoothly of curtain 1.
In another embodiment, the driving portion may further include a rotating shaft 25 and a crank (not shown in the figure) for driving the rotating shaft 25 to rotate, and the crank drives the rotating shaft 25 to rotate positively, so as to wind and unwind the curtain 1.
In another embodiment, the control portion 4 may further include two sets of first magnets fixedly mounted on the side wall of the rotating shaft 25 and a second magnet mounted on one side of the cleaning portion 3, wherein one set of the first magnets and the second magnet are mutually discharged, and the other set of the first magnets and the second magnet are mutually attracted, when the curtain 1 is unfolded, one set of the first magnets can repel the second magnet, so that the cleaning portion 3 is far away from the side wall of the curtain 1, when the curtain is rolled, the rotating shaft 25 rotates to drive the other set of the first magnets and the second magnet to correspond to each other, so as to attract the cleaning portion 3, so that the cleaning portion 3 is attached to the side wall of the curtain 1, thereby cleaning the curtain 1.
Referring to fig. 3, in an embodiment, the pushing portion includes a sliding sleeve 42 and a push rod 44, a threaded section is disposed at one end of the rotating shaft 25, the sliding sleeve 42 is sleeved outside the rotating shaft 25 and is in threaded fit with the threaded section, the push rod 44 is fixedly disposed on a side wall of the sliding sleeve 42, and the side wall of the sliding sleeve 42 is slidably connected with an inner wall of the supporting portion 2 through a sliding portion; the cleaning part 3 is provided with an inclined surface 31 at one side, and the push rod 44 is attached to the inclined surface 31.
When unreeling, when motor 21 drives pivot 25 and rotates, pivot 25 compares in spool 23 relative rotation, spool 23 keeps static this moment, accessible sliding sleeve 42 and the cooperation between the screw thread section when pivot 25 rotates, drive sliding sleeve 42 and remove, and then drive push rod 44 and remove, can act on inclined plane 31 when push rod 44 removes, and then drive clearance portion 3 and remove and overcome the holding power of elastic support portion 5, make clearance portion 3 keep away from 1 lateral wall of curtain, until spacing portion intervenes, pivot 25 drives spool 23 synchronous rotation, realize unreeling smoothly of curtain 1.
In another embodiment, the pushing part may further include a first bevel gear (not shown) fixedly installed on the rotating shaft 25 and a second bevel gear (not shown) engaged with the first bevel gear, a connecting rod is fixedly arranged on one side of the second bevel gear, an eccentric wheel (not shown in the figure) is fixedly arranged on one end of the connecting rod far away from the second bevel gear, the eccentric wheel acts on one side of the cleaning part 3, when the rotating shaft 25 rotates, the first bevel gear is driven to rotate, the connecting rod and the eccentric wheel are driven to rotate by the meshing action between the first bevel gear and the second bevel gear, when the eccentric wheel rotates, the cleaning part 3 is driven to move and overcome the supporting force of the elastic supporting part 5, make clearance portion 3 keep away from curtain 1 lateral wall, until spacing portion intervenes, pivot 25 drives the synchronous rotation of spool 23, realizes unreeling smoothly of curtain 1.
Referring to fig. 3, in an embodiment, the elastic supporting portion 5 includes a support 51 fixedly disposed inside the supporting portion 2 and a second elastic body 52 fixedly disposed on one side of the support 51, and an end of the second elastic body 52 away from the support 51 is connected to the cleaning portion 3.
Provide elastic support for clearance portion 3 through second elastomer 52, make the inclined plane 31 and the push rod 44 of clearance portion 3 one side closely laminate, make push rod 44 when removing, clearance portion 3 can carry out the removal of adaptability, and then make when the rolling, clearance portion 3 can remove to curtain 1 lateral wall and laminate with curtain 1, realize the clearance of curtain 1, and when unreeling, clearance portion 3 can remove from curtain 1 lateral wall, guarantee unreeling smoothly of curtain 1.
In another embodiment, the elastic support portion 5 may further include a stay bar fixedly disposed on one side of the cleaning portion 3, a column casing fixedly disposed inside the support portion 2, and a spring disposed inside the column casing, wherein the stay bar extends into the column casing and is connected with the spring in an abutting manner, and the spring provides elastic support for the stay bar, so as to ensure that the inclined surface on one side of the cleaning portion 3 is always tightly attached to the push rod 44, and ensure that the cleaning portion 3 can move adaptively along with the movement of the push rod 44.
Referring to fig. 3, in one embodiment, in order to ensure the smooth movement of the cleaning portion 3, a second guide rail 53 is further fixedly disposed inside the supporting portion 2, a sliding block 54 slidably engaged with the second guide rail 53 is fixedly disposed on a side wall of the cleaning portion 3, and the sliding engagement between the sliding block 54 and the guide rail 53 ensures the smooth movement of the cleaning portion 3, so that the cleaning portion 3 can be completely attached to a side wall of the curtain 1 or completely removed from one side of the curtain 1.
Referring to fig. 4, in an embodiment, the limiting portion includes a limiting block 28 fixedly disposed on a side wall of the rotating shaft 25, a limiting groove 27 is formed at an end of the winding shaft 23, and the limiting block 28 extends into the limiting groove 27 and can rotate along the limiting groove 27.
When the rotating shaft 25 rotates, the limiting block 28 can be driven to rotate, when the curtain 1 needs to be rolled, the rotating shaft 25 drives the limiting block 28 to rotate along the inside of the limiting groove 27, the scroll 23 keeps static at the moment, after the rotating shaft 25 drives the pushing part to move so as to drive the cleaning part 3 to be attached to the side wall of the curtain 1, the limiting block 28 rotates to the other end of the limiting groove 27, the rotating shaft 25 can drive the scroll 23 to synchronously rotate at the moment, and then the curtain 1 is driven to roll, and because the cleaning part 3 is attached to the side wall of the curtain 1, dust and sundries adhered to the side wall of the curtain 1 can be cleaned by the cleaning part 3; when needs unreel curtain 1, pivot 25 antiport, drive stopper 28 at the inside antiport of spacing groove 27 then, pivot 25 can drive promotion portion antiport this moment, promotion portion removes the back from curtain 1 lateral wall with clearance portion 3, stopper 28 rotates to the other end of spacing groove 27, and then drive spool 23 synchronous rotation, in order to unreel curtain 1, and unreel the in-process at curtain 1, clearance portion 3 removes from curtain 1 lateral wall, guarantee unreeling smoothly of curtain 1.
In another embodiment, the limiting portion may further include a stop lever fixedly disposed on the side wall of the rotating shaft 25 and two sets of limit levers fixedly disposed on the end portion of the winding shaft 23, the stop lever extends between the two sets of limit levers, and the rotating shaft 25 can drive the stop lever to rotate between the two sets of limit levers when rotating, so as to ensure that the rotating shaft 25 can rotate relative to the winding shaft 23 by a certain angle, thereby realizing the movement of the cleaning portion 3.
Referring to fig. 1, in an embodiment, the supporting portion 2 includes a receiving portion 22, and a side wall of the receiving portion 22 is provided with a notch 26 through which the curtain 1 can pass.
In the above embodiment, the storage portion 22 may be a box structure or a box structure, and is used for storing the winding portion and the control portion 4.
Referring to fig. 2, in an embodiment, the sliding portion includes a guide rod 41 fixedly disposed on a side wall of the sliding sleeve 42 and a first guide rail 24 fixedly disposed on an inner wall of the supporting portion 2, a slot adapted to the first guide rail 24 is disposed at one end of the guide rod 41 away from the sliding sleeve 42, and the guide rod 41 is slidably engaged with the first guide rail 24 through the slot.
When the rotating shaft 25 rotates, the sliding sleeve 42 can be ensured to move smoothly along the rotating shaft 25 by the sliding fit between the guide rod 41 and the first guide rail 24.
In another embodiment, the sliding portion may further include a sleeve fixedly disposed on a side wall of the sliding sleeve 42 and a sliding rod fixedly mounted inside the supporting portion 2, the sleeve is sleeved outside the sliding rod and is in sliding fit with the sliding rod, and the sliding sleeve and the sliding rod are in sliding fit with each other, so as to ensure that the sliding sleeve 42 can smoothly move along the rotating shaft 25.
Referring to fig. 2 and 3, in one embodiment, one end of the sliding sleeve 42 is connected to the inner wall of the supporting portion 2 through a first elastic body 43, when the sliding sleeve 42 moves along the rotating shaft 25 to be separated from the threaded section, the first elastic body 43 provides an elastic force to the sliding sleeve 42, and the sliding sleeve 42 is kept at the position under the limitation of the threaded section, and when the rotating shaft 25 rotates in the reverse direction, the elastic force can pull the sliding sleeve 42, so that the sliding sleeve 42 is matched with the threaded section again, and the sliding sleeve 42 is ensured to be driven by the rotating shaft 25 to move in the reverse direction.
In the above embodiments, the first elastic body 43 and the second elastic body 52 may be springs or metal elastic sheets, which are not limited herein.
Referring to fig. 2, in an embodiment, a damping clamping portion 6 is further disposed inside the supporting portion 2, and the damping clamping portion 6 is configured to clamp the winding shaft 23, so as to ensure that the winding shaft 23 can obtain a certain clamping force when the rotating shaft 25 initially rotates, and further ensure that the winding shaft 23 is in a stationary state, so that the rotating shaft 25 and the winding shaft 23 can rotate relatively.
Referring to fig. 2, in an embodiment, the damping clamping portion 6 includes a supporting rod 62 and a damping block 61, the supporting rod 62 is disposed on one side of the winding shaft 23, the damping block 61 is disposed on one side of the supporting rod 62 facing the winding shaft 23, and the damping block 61 is attached to a side wall of the winding shaft 23.
When pivot 25 rotated, because damping piece 61 laminating is in spool 23 one side to produce the damping effect to spool 23, guarantee to produce relative rotation between pivot 25 and the spool 23, intervene the back in spacing portion, pivot 25 drives the synchronous rotation of spool 23, produces relative movement between spool 23 and the damping piece 61.
In another embodiment, the damping clamping portion 6 may further include a pressing rod, the pressing rod is connected to the inner wall of the supporting portion 2 through a spring, and one end of the pressing rod away from the spring abuts against the sidewall of the winding shaft 23, so that the winding shaft 23 can be ensured to generate a damping effect through the pressing rod.
In the above embodiment, the damping block 61 may be a rubber block or a plastic block, which is not limited herein.
In the above embodiment, the cleaning portion 3 may be a strip-shaped structure or a rod-shaped structure, and in order to improve the cleaning effect of the curtain 1, a brush layer or a sponge layer may be further disposed on one side of the strip-shaped structure or the rod-shaped structure.
When the winding part winds the curtain 1, the control part 4 can move in the supporting part 2, so that the cleaning part 3 is driven to move and be attached to the side wall of the curtain 1, and dust and sundries adhered to the side wall of the curtain 1 are cleaned along with the winding of the curtain 1; when rolling portion unreeled curtain 1, control unit 4 can be at the inside reverse movement of supporting part 2, and then orders about 3 reverse movements of clearance portion and remove in order to follow curtain 1 lateral wall to prevent to influence normally unreeling of curtain 1 because of the existence of clearance portion 3, compare in prior art, can realize the automatic clearance of curtain 1 when not influencing curtain 1 and receive and unreel.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (3)

1. A multimedia video screen device is characterized in that the device comprises a screen, a rolling part, a supporting part, a cleaning part and a control part,
the winding part is arranged in the supporting part and used for winding and unwinding the curtain,
the control part is arranged in the supporting part, when the rolling part rolls the curtain, the rolling part can drive the control part to move in the supporting part, and when the control part moves, the cleaning part can be driven to be attached to the side wall of the curtain so as to clean the side wall of the curtain;
when the winding part unwinds the curtain, the winding part can drive the control part to reversely move in the supporting part, and when the control part reversely moves, the control part can drive the cleaning part to remove from the side wall of the curtain, so that the cleaning part is prevented from obstructing unwinding of the curtain, and smooth unwinding of the curtain is ensured;
the winding part comprises a reel arranged in the supporting part and a driving part for driving the reel to rotate;
the driving part comprises a rotating shaft and a rotating part for driving the rotating shaft to rotate, the rotating shaft penetrates through the scroll and is movably matched with the scroll,
the side wall of the rotating shaft is provided with a limiting part which is used for limiting the rotating shaft and the scroll into a whole;
the control part comprises a pushing part and an elastic supporting part, the pushing part is arranged on the rotating shaft and is used for driving the cleaning part to move so as to drive the cleaning part to be far away from the curtain,
the elastic supporting part is arranged in the supporting part and used for driving the cleaning part to move reversely and driving the cleaning part to be attached to the side wall of the curtain;
the pushing part comprises a sliding sleeve and a push rod,
a threaded section is arranged at one end of the rotating shaft, the sliding sleeve is sleeved outside the rotating shaft in a threaded manner and is in threaded fit with the threaded section, the push rod is fixedly arranged on the side wall of the sliding sleeve, and the side wall of the sliding sleeve is in sliding connection with the inner wall of the supporting part through a sliding part;
an inclined plane is arranged on one side of the cleaning part, and the push rod is attached to the inclined plane;
the elastic supporting part comprises a support fixedly arranged in the supporting part and a second elastic body fixedly arranged on one side of the support, and one end, far away from the support, of the second elastic body is connected with the cleaning part;
the limiting part comprises a limiting block fixedly arranged on the side wall of the rotating shaft, a limiting groove is formed in the end part of the scroll, and the limiting block extends into the limiting groove and can rotate along the inside of the limiting groove;
the sliding part comprises a guide rod fixedly arranged on the side wall of the sliding sleeve and a first guide rail fixedly arranged on the inner wall of the supporting part, one end, far away from the sliding sleeve, of the guide rod is provided with a clamping groove matched with the first guide rail, and the guide rod is in sliding fit with the first guide rail through the clamping groove;
one end of the sliding sleeve is connected with the inner wall of the supporting part through a first elastic body.
2. The device of claim 1, wherein a damping clamping portion is further disposed inside the supporting portion, and the damping clamping portion is configured to clamp the winding shaft, so as to ensure that the winding shaft can obtain a certain clamping force when the rotating shaft initially rotates, and further ensure that the winding shaft is in a stationary state, so that the rotating shaft and the winding shaft can rotate relatively.
3. The apparatus of claim 2, wherein the damping holder comprises a support rod and a damping block, the support rod is disposed on one side of the winding shaft, the damping block is disposed on one side of the support rod facing the winding shaft, and the damping block is attached to the side wall of the winding shaft.
CN202110454571.2A 2021-04-26 2021-04-26 Multimedia film screen device Active CN113173461B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4166267B2 (en) * 2003-10-31 2008-10-15 泉株式会社 Portable screen device
CN206209278U (en) * 2016-11-28 2017-05-31 柳立言 A kind of computer projection screen being convenient to clean
CN212484062U (en) * 2020-08-10 2021-02-05 江西服装学院 Projection screen cloth coiling mechanism

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