CN207366925U

CN207366925U - A kind of longitudinal luffing device of frame-type projection screen

Info

Publication number: CN207366925U
Application number: CN201721195414.XU
Authority: CN
Inventors: 李国华
Original assignee: Guangzhou Chuang Vision Intelligent Equipment Co Ltd
Current assignee: Guangzhou Chuang Vision Intelligent Equipment Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2018-05-15
Anticipated expiration: 2027-09-18

Abstract

The utility model discloses a kind of longitudinal luffing device of frame-type projection screen, belong to frame-type projection screen field, cropping curtain including tube and inside tube, further includes the traction element arranged on tube both sides, motor transmission parts, slave unit and the pressure amplitude frame arranged on cropping curtain both ends；The motor transmission parts and slave unit are arranged oppositely to be sequentially connected in the both sides of tube, motor transmission parts, traction element and the slave unit by conveyer belt, and traction element drives cropping curtain to carry out bidirectional-movement；Beneficial effect：The utility model makes it not be left white, the utility model is easy to operate, and stability is high by controlling cropping cloth to realize expansion and fold so as to change visual projected area.

Description

A kind of longitudinal luffing device of frame-type projection screen

Technical field

Frame-type projection screen field is the utility model is related to, is filled more particularly to a kind of longitudinal luffing of frame-type projection screen Put.

Background technology

Existing variable proportion frame-type projection screen is manually to adjust cropping so that the size for changing visual screen is big Small, for fixed mask size frame formula screen, adjustable cropping is in order to make single ratio such as 16:10, it can pass through Adjust cropping and by proportion switch be 16:9 or 2.35:1, there is provided film proportional sizes are empty without allowing upper and lower or left and right edges to occur White place influence it is beautiful, can frame-type projection screen size that so hand is adjusted have a restriction, size cannot too greatly, and installation site Height is also opposite to limit to, and it is extremely inconvenient to operate.

Utility model content

The purpose of this utility model is to provide a kind of longitudinal luffing device of frame-type projection screen, to solve the prior art Deficiency, wherein the cropping cloth that longitudinal luffing device is mainly equipped with by traction element is led to by motor transmission component with driven subassembly Endless drive direction is crossed so that traction element drives cropping curtain to realize that expansion is with folding up and down, so as to change the visual throwing of width curtain Shadow area makes it not be left white.

The technical solution of the utility model:

A kind of longitudinal luffing device of frame-type projection screen, including tube and the cropping curtain inside tube, are also wrapped Include traction element, motor transmission parts, slave unit and the pressure amplitude frame arranged on cropping curtain both ends arranged on tube both sides；Institute State motor transmission parts and slave unit be arranged oppositely in the both sides of tube, the motor transmission parts, traction element and from Dynamic component is sequentially connected by conveyer belt, and traction element drives cropping curtain to carry out bidirectional-movement.

Traction element includes U-typed connecting plate, locking key platform, lock core bar, embedding key, bolt, nut, opening clips；U-typed connects Fishplate bar connects pressure amplitude frame, and the locking key chain of stations connects U-typed connecting plate, and locking key platform is equipped with Kong Weiyu lock core bar location fits, and lock core bar A fasteners with embedding key for the locking conveyer belt that cooperates, and lock core bar only clamps the side of conveyer belt with embedding key.

The motor transmission parts successively include bearing, conveyer belt gear, gear stand, bearing, electric machine support, top plate, Pillar, the first " L " type electric machine support, motor tube, tube plug and the second " L " type electric machine support, imperial crown wheel, square head shaft, torsion Power spring, runner；Electric machine support is equipped with synchronous motor, and bearing is installed on the both ends of the gear stand equipped with conveyer belt gear, The synchronous motor rear is equipped with tube shaped electric machine, and tube shaped electric machine sends signal driving synchronous motor, and synchronous electricity as signal source Square hole bearing, square hole bearing and square head shaft secure fit are equipped with by pusher side, imperial crown wheel coordinates with square head shaft arbitrarily to be turned with tube It is dynamic.

The square head shaft is equipped with the hole position being connected with torque spring, and torque spring is fixed on runner, and runner is fixed on On tube, and the round end imperial crown plug on right side only coordinates tube to rotate with circular hole bearing.

Beneficial effect：The utility model is by controlling cropping cloth to realize expansion and fold, so as to change visual projected area It is set not to be left white, the utility model is easy to operate, and stability is high.

Brief description of the drawings

The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality New schematic description and description is used to explain the utility model, does not form the improper restriction to the utility model. In the accompanying drawings：

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the explosive view of traction element；

Fig. 3 is the inside schematic cross-sectional view of traction element；

Fig. 4 is the explosive view of electric transmission component；

Fig. 5 is slave unit explosive view；

Fig. 6 is inside schematic cross-sectional view when motor transmission parts coordinate with slave unit.

Wherein：1. cropping curtain, 2. pressure amplitude frames, 3. tractors, 4. conveyer belts, 5. bearing blocks, 6. synchronous motors, 7. square holes Bearing, 8. circular hole bearings, 9. tubes, 10. tube shaped electric machines, A. traction elements, A1. U-typed connecting plates, A2. locking key platforms, A3. locks Core bar, the embedding keys of A4., A5. bolts, A6. nuts, A7. opening clips, B. motor transmission parts, B1. bearings, B2. conveyer belt teeth Wheel, B3. gear stands, B4. bearings, B5. electric machine supports, B6. top plates, B7. pillars, B8. first " L " type electric machine support, B9. electricity Machine tube, B10. tube plugs, B11. second " L " type electric machine support, B12. imperial crown wheels, B13. square head shafts, B14. torque springs, B15. runner, C. slave units, C1. round end imperial crown plugs.

Embodiment

Herein below is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that the specific implementation of the utility model is confined to these explanations, it is necessary to illustrate, in the case where there is no conflict, this Shen Please in embodiment and embodiment in feature can be mutually combined.

With reference to shown in Fig. 1, a kind of longitudinal luffing device of frame-type projection screen, including tube 9 and inside tube 9 Cropping curtain 1, further includes the traction element A arranged on 9 both sides of tube, motor transmission parts B, slave unit C and arranged on cropping The pressure amplitude frame 2 at curtain both ends；The motor transmission parts B and slave unit C are arranged oppositely in the both sides of tube 9, the motor Transmission parts B, traction element A and slave unit C are sequentially connected by conveyer belt 4, traction element A drive cropping curtain 1 into Row bidirectional-movement.

With reference to shown in Fig. 2, Fig. 3, shown traction element A acts on cropping curtain 1 and conveyer belt 4, cropping curtain 1 at the same time The pressure amplitude frame 2 equipped with slot is connected to, and pressure amplitude frame 2 and locking key are together connected to as intermediate carrier by U-shaped connecting plate A1 Platform A2, and locking key platform A2 is equipped with Kong Weiyu lock core bar A3 location fits, and lock core bar A3 and embedding key A4 is the locking biography that cooperates A fasteners of band 4 are sent, and lock core bar A3 and embedding key A4 only clamps one side of endless belt conveyer 4.

With reference to shown in Fig. 4, Fig. 5 and Fig. 6, the motor transmission parts B is equipped with synchronous motor 6, synchronous motor 6 is located at motor On stent B5, bearing B1, B4 be installed on equipped with conveyer belt gear B 2 gear stand B3 both ends reduce frictional force, synchronous motor 6 drive conveyer belt gear Bs 2 carry out gear with conveyer belt 4 and engage, and 6 rear of synchronous motor is equipped with and is additionally provided with a tube shaped electric machine 10, tube shaped electric machine 10 sends signal driving synchronous motor 6 as signal source, and is equipped with square hole bearing 7 by 6 side of synchronous motor, side Hole bearing 7 and square head shaft B13 secure fits, and imperial crown wheel B12 and square head shaft B13 clearance fits can arbitrarily be rotated with tube 9.

With reference to shown in Fig. 6, the square head shaft B13 is equipped with the hole position being connected with torque spring B14, and torque spring B14 consolidates It is scheduled on runner B15, runner B15 is then integrally fixed in tube 9, and the round end imperial crown plug C1 on right side and circular hole bearing only coordinate and turn Pipe 9 rotates, when motor 6 drives conveyer belt 4 so as to stretch out tractor 3 drives on conveyer belt 4 cropping curtain 1 during operation, by It is arranged in cropping curtain 1 inside tube 9 so that tube 9 together drives torque spring B14 to be rotated forward, due at this moment torsion bullet Spring B14 can not be rotated since one end is fixed on square head shaft B13, and the other end is driven the torque spring B14 so that internal by tube 9 Certain elastic potential energy is stored, when tube 9 is inverted, the energy of this part, which switchs to kinetic energy, drives tube to recycle cropping curtain Fastening does not loosen when 1.

For the utility model person of an ordinary skill in the technical field, the utility model design is not being departed from Under the premise of, some simple deduction or replace can also be made, should all be considered as belonging to the scope of protection of the utility model.

Claims

1. a kind of longitudinal luffing device of frame-type projection screen, including tube and the cropping curtain inside tube, its feature It is, further includes the traction element arranged on tube both sides, motor transmission parts, slave unit and arranged on cropping curtain both ends Pressure amplitude frame；The motor transmission parts and slave unit are arranged oppositely in the both sides of tube, the motor transmission parts, tractive unit Part and slave unit are sequentially connected by conveyer belt, and traction element drives cropping curtain to carry out bidirectional-movement.

2. a kind of longitudinal luffing device of frame-type projection screen according to claim 1, it is characterised in that traction element includes U-typed connecting plate, locking key platform, lock core bar, embedding key, bolt, nut, opening clips；U-typed connecting plate connects pressure amplitude frame, locking key The chain of stations connects U-typed connecting plate, and locking key platform is equipped with Kong Weiyu lock core bar location fits, and lock core bar is locked with embedding key to cooperate One fasteners of conveyer belt, and lock core bar only clamps the side of conveyer belt with embedding key.

A kind of 3. longitudinal luffing device of frame-type projection screen according to claim 1, it is characterised in that the motor transmission Component includes bearing, conveyer belt gear, gear stand, bearing, electric machine support, top plate, pillar, first " L " type motor branch successively Frame, motor tube, tube plug and the second " L " type electric machine support, imperial crown wheel, square head shaft, torque spring, runner；Electric machine support Synchronous motor is equipped with, bearing is installed on the both ends of the gear stand equipped with conveyer belt gear, and the synchronous motor rear is equipped with Tube shaped electric machine, is equipped with square hole bearing, square hole bearing and square head shaft secure fit by synchronous motor, imperial crown wheel and square head shaft cooperation and Arbitrarily rotated with tube.

4. a kind of longitudinal luffing device of frame-type projection screen according to claim 3, it is characterised in that the square head shaft is set There is the hole position being connected with torque spring, and torque spring is fixed on runner, runner is fixed in tube.