CN212781653U

CN212781653U - Portable desktop screen capable of being rapidly unfolded

Info

Publication number: CN212781653U
Application number: CN202021276514.7U
Authority: CN
Inventors: 张夏芬
Original assignee: Hangzhou Xianrui Digital Technology Co ltd
Current assignee: Hangzhou Xianrui Digital Technology Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-03-23
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a portable desktop screen that can expand fast, including the main tank body, containing box, gag lever post and handle, the upper right end of main tank body is provided with hand round, and the hand takes turns to and is connected with the screw rod to screw rod end and main tank body interconnect, hand round is fixed on the rotation axis simultaneously, the gag lever post is fixed in the curtain bottom, and is fixed with the stretch cord below the gag lever post to the stretch cord end is fixed with the iron hook, iron hook and semicircle ring interconnect simultaneously, the semicircle ring is fixed on the fixed plate, and the fixed plate is fixed on the rotation axis, the handle is fixed at the main tank body right-hand member. This portable desktop screen that can expand fast connects containing box and the main tank body through the telescopic link, and cooperation rotation axis and hand wheel conveniently constitute screen bearing structure fast, and convenient follow-up screen of pulling down is fixed and is used, utilizes convolution spring's elastic force effect, can retrieve into containing box, convenient save and follow-up use automatically to the screen after using.

Description

Portable desktop screen capable of being rapidly unfolded

Technical Field

The utility model relates to a screen technical field specifically is a portable desktop screen that can expand fast.

Background

The screen is a white screen used for displaying projection, the diffuse reflection screen is made by coating barium sulfate or metal powder on the screen, the screen is used for meeting rooms and classrooms for displaying network files, and the projection screen is mostly fixedly installed on the wall.

Along with the development of intelligent society, traditional fixed installation curtain is difficult to satisfy people's demand, so receive people and love in the desktop formula screen that traditional screen is more simple and convenient for less than, and the desktop screen device on the existing market is mostly concatenation assembled, simple structure, and the steadiness is not high and the person of not being convenient for expandes fast and accomodates, so urgently need to improve traditional desktop screen device to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable desktop screen that can expand fast to propose simple structure in solving above-mentioned background art, the steadiness is not high and the not convenient to use person expandes fast and the problem of accomodating.

In order to achieve the above object, the utility model provides a following technical scheme: a portable desktop screen capable of being rapidly unfolded comprises a main box body, a containing box, a limiting rod and a handle, wherein a hand-operated wheel is arranged at the upper right end of the main box body, a screw rod is connected onto the hand-operated wheel, the tail end of the screw rod is connected with the main box body, the hand-operated wheel is fixed onto a rotating shaft, a rotating shaft bearing is fixed onto the main box body, a telescopic rod is fixed onto the rotating shaft, a lock hole is formed in the telescopic rod, a lock rod is arranged in the lock hole, the containing box is fixed onto the tail end of the telescopic rod, a rotating rod is fixed onto an inner bearing of the containing box, a convolution spring is fixed onto the rotating rod, the tail end of the convolution spring is fixed onto the containing box, a screen is fixed onto the rotating rod, a brush is arranged on the upper side of the screen, the brush is fixed onto the main box body, a guide wheel is arranged below, and an elastic rope is fixed below the limiting rod, an iron hook is fixed at the tail end of the elastic rope, the iron hook is connected with a semicircular ring, the semicircular ring is fixed on a fixing plate, the fixing plate is fixed on a rotating shaft, and the handle is fixed at the right end of the main box body.

Preferably, the main box body and the telescopic rod form a rotating mechanism through a rotating shaft, and the rotating amplitude of the main box body around the rotating shaft is 0-90 degrees.

Preferably, the telescopic rods are symmetrically distributed about the curtain, the length of the telescopic rods after being stretched is larger than that of the curtain, and the length of the telescopic rods after being contracted is smaller than the height of the main box body.

Preferably, the lock hole is in sliding connection with the lock rod, and the lock rod is of an L-shaped structure.

Preferably, the limiting rod and the containing box are distributed in parallel, and the length of the limiting rod is larger than the width of the curtain.

Preferably, the elastic ropes are symmetrically distributed about the limiting rod, the length of the elastic ropes in a normal state is 3-5cm, and the length of the elastic ropes after being stretched is 6-10 cm.

Compared with the prior art, the beneficial effects of the utility model are that: this portable desktop screen that can expand fast connects containing box and the main tank body through the telescopic link, and cooperation rotation axis and hand wheel conveniently constitute screen bearing structure fast, and convenient follow-up screen of pulling down is fixed and is used, utilizes convolution spring's elastic force effect, can retrieve into containing box, convenient save and follow-up use automatically to the screen after using.

1. Rotate the hand cranking wheel and drive the rotation axis rotatory to the fixed bearing structure who drives telescopic link and containing box and constitute rotates, after whole fixed bearing structure rotates the angle that needs, cooperation screw rod lock dies, prevents whole slip, improves the stability of device.

2. When pulling the screen downwards, the effect of cooperation leading wheel can make the screen stimulate more easily to the existence of leading wheel can prevent to stimulate screen in-process screen and containing box friction and cause the damage, when the screen is packed up automatically to the spring that circles round, the cooperation brush can be cleared up the screen surface, guarantees the clean and tidy of screen, extension screen life.

Drawings

FIG. 1 is a schematic view of the front sectional structure of the main box body of the present invention;

FIG. 2 is a schematic view of the left side cross-section structure of the main box body of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2;

fig. 5 is an enlarged schematic structural view of the point C in fig. 2 according to the present invention.

In the figure: 1. a main box body; 2. a hand-operated wheel; 3. a screw; 4. a rotating shaft; 5. a telescopic rod; 6. a lock hole; 7. a lock lever; 8. a storage box; 9. rotating the rod; 10. a convolution spring; 11. a curtain; 12. a brush; 13. a guide wheel; 14. a limiting rod; 15. an elastic cord; 16. an iron hook; 17. a semicircular ring; 18. a fixing plate; 19. and (4) a handle.

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. 1-5, the present invention provides a technical solution: a portable desktop screen capable of being rapidly unfolded comprises a main box body 1, a hand wheel 2, a screw rod 3, a rotating shaft 4, a telescopic rod 5, a lock hole 6, a lock rod 7, a containing box 8, a rotating rod 9, a convolution spring 10, a curtain 11, a brush 12, a guide wheel 13, a limiting rod 14, an elastic rope 15, an iron hook 16, a semicircular ring 17, a fixing plate 18 and a handle 19, wherein the hand wheel 2 is arranged at the upper right end of the main box body 1, the hand wheel 2 is connected with the screw rod 3, the tail end of the screw rod 3 is mutually connected with the main box body 1, the hand wheel 2 is fixed on the rotating shaft 4, the rotating shaft 4 is fixed on the main box body 1 through a bearing, the telescopic rod 5 is fixed on the rotating shaft 4, the lock hole 6 is formed in the telescopic rod 5, the lock rod 7 is arranged in the lock hole 6, the containing box 8 is fixed at the tail end of the telescopic rod 5, the, meanwhile, the tail end of a convolution spring 10 is fixed on the storage box 8, a curtain 11 is fixed on the rotary rod 9, a brush 12 is arranged on the upper side of the curtain 11, the brush 12 is fixed on the main box body 1, a guide wheel 13 is arranged below the curtain 11, the guide wheel 13 is fixed on the main box body 1, a limiting rod 14 is fixed at the bottom end of the curtain 11, an elastic rope 15 is fixed below the limiting rod 14, an iron hook 16 is fixed at the tail end of the elastic rope 15, the iron hook 16 is connected with a semicircular ring 17, the semicircular ring 17 is fixed on a fixing plate 18, the fixing plate 18 is fixed on the rotary shaft 4, and a handle 19 is fixed at the right end of the main box body 1.

The main box body 1 forms a rotating mechanism with the telescopic rod 5 through the rotating shaft 4, the rotating amplitude of the main box body 1 is 0-90 degrees with the rotating shaft 4, and the telescopic rod 5 is guaranteed to be conveniently unfolded and then stored under the driving of the rotating shaft 4.

The telescopic link 5 is the symmetric distribution about curtain 11, and the length after telescopic link 5 extends is greater than the length of curtain 11 to the length of telescopic link 5 shrink is less than the height of main tank body 1, can provide stable supporting role to curtain 11 when guaranteeing that telescopic link 5 expandes, and telescopic link 5 can be convenient for put into in main tank body 1 when the shrink.

The lock hole 6 is in sliding connection with the lock rod 7, the lock rod 7 is of an L-shaped structure, the telescopic rod 5 is conveniently locked and retracted, and the stability of the telescopic rod 5 during extension is improved.

The limiting rod 14 and the containing box 8 are distributed in parallel, and the length of the limiting rod 14 is larger than the width of the curtain 11, so that when the curtain 11 is contracted by the convolution spring 10, the curtain 11 cannot completely enter the containing box 8, and the curtain 11 is pulled out when the curtain is convenient to use.

The elastic ropes 15 are symmetrically distributed about the limiting rod 14, the length of the elastic ropes 15 in a normal state is 3-5cm, and the length of the elastic ropes 15 after being stretched is 6-10cm, so that the curtain 11 is guaranteed not to be damaged under the elastic force of the convolution springs 10 after being pulled down and fixed, and the elastic ropes 15 provide damping and tensile effects for the curtain 11.

The working principle is as follows: firstly, putting a received handle 19 at a proper position, rotating the hand-operated wheel 2 to drive the rotating shaft 4 to rotate, further driving the telescopic rod 5 and the fixing plate 18 to rotate, and locking the hand-operated wheel 2 by rotating the screw rod 3 after the telescopic rod 5 rotates to be vertical, so that the rotating shaft 4 is fixed and prevented from sliding;

after the telescopic rod 5 rotates to be vertical, the containing box 8 is pulled to extend the telescopic rod 5, after the telescopic rod 5 extends to a proper position, the telescopic rod 5 is locked by the locking rod 7 penetrating through the locking hole 6, at the moment, the assembly of a fixed frame consisting of the telescopic rod 5, the containing box 8 and the fixed plate 18 is completed, the limiting rod 14 is pulled downwards, the curtain 11 is driven to move downwards by matching the rotation of the rotating rod 9 and the action of the guide wheel 13, and the curtain 11 can be unfolded until the iron hook 16 below the limiting rod 14 is connected to the semicircular ring 17 on the fixed plate 18, as shown in fig. 1;

when curtain 11 needs to be accomodate, separately 16 and the semicircle rings of iron hook 17 drive curtain 11 automatic contraction under the effect of convolution spring 10, and brush 12 that the cooperation was fixed on containing box 8 clears up curtain 11 surface, guarantees the clean and tidy of curtain 11, and the back is received to curtain 11, according to above-mentioned principle with whole device shrink into main tank 1 in, this is exactly the theory of operation of this portable desktop screen that can expand fast.

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 portable desktop screen that can expand fast, includes main tank body (1), containing box (8), gag lever post (14) and handle (19), its characterized in that: the upper right end of the main box body (1) is provided with a hand-operated wheel (2), the hand-operated wheel (2) is connected with a screw rod (3), the tail end of the screw rod (3) is connected with the main box body (1), the hand-operated wheel (2) is fixed on a rotating shaft (4), the rotating shaft (4) is fixed on the main box body (1) in a bearing mode, a telescopic rod (5) is fixed on the rotating shaft (4), a lock hole (6) is formed in the telescopic rod (5), a lock rod (7) is arranged in the lock hole (6), the storage box (8) is fixed at the tail end of the telescopic rod (5), a rotating rod (9) is fixed on an inner bearing of the storage box (8), a rotary spring (10) is fixed on the rotating rod (9), the tail end of the rotary spring (10) is fixed on the storage box (8), a curtain (11) is fixed on the rotating rod (9), and a brush (12), and brush (12) are fixed on main tank body (1), and curtain (11) below is provided with leading wheel (13) simultaneously, leading wheel (13) are fixed on main tank body (1), gag lever post (14) are fixed in curtain (11) bottom, and gag lever post (14) below is fixed with stretch cord (15) to stretch cord (15) end is fixed with iron hook (16), and iron hook (16) and semicircle ring (17) interconnect simultaneously, semicircle ring (17) are fixed on fixed plate (18), and fixed plate (18) are fixed on rotation axis (4), handle (19) are fixed at main tank body (1) right-hand member.

2. A rapidly deployable portable desktop screen as claimed in claim 1, wherein: the main box body (1) and the telescopic rod (5) form a rotating mechanism through the rotating shaft (4), and the rotating amplitude of the main box body (1) with the rotating shaft (4) is 0-90 degrees.

3. A rapidly deployable portable desktop screen as claimed in claim 1, wherein: the telescopic rods (5) are symmetrically distributed relative to the curtain (11), the length of the telescopic rods (5) after being stretched is larger than that of the curtain (11), and the length of the telescopic rods (5) after being contracted is smaller than the height of the main box body (1).

4. A rapidly deployable portable desktop screen as claimed in claim 1, wherein: the lock hole (6) is in sliding connection with the lock rod (7), and the lock rod (7) is of an L-shaped structure.

5. A rapidly deployable portable desktop screen as claimed in claim 1, wherein: the limiting rod (14) and the containing box (8) are distributed in parallel, and the length of the limiting rod (14) is larger than the width of the curtain (11).

6. A rapidly deployable portable desktop screen as claimed in claim 1, wherein: the elastic ropes (15) are symmetrically distributed relative to the limiting rod (14), the length of the elastic ropes (15) in a normal state is 3-5cm, and the length of the elastic ropes (15) after stretching is 6-10 cm.