CN1760753A - Not folded manual projection curtain - Google Patents
Not folded manual projection curtain Download PDFInfo
- Publication number
- CN1760753A CN1760753A CN 200510100943 CN200510100943A CN1760753A CN 1760753 A CN1760753 A CN 1760753A CN 200510100943 CN200510100943 CN 200510100943 CN 200510100943 A CN200510100943 A CN 200510100943A CN 1760753 A CN1760753 A CN 1760753A
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- Prior art keywords
- curtain
- fixed mount
- planet wheel
- shoe
- self
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- 239000007788 liquid Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005119 centrifugation Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 16
- 239000002826 coolant Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003280 down draw process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The projection curtain is composed of drawing tube, curtain, torsion spring assembly, rotation tube and outer casing. Mechanism for positioning and decelerating the projection curtain, planetary gearing, and fixed mount cooperated to planetary gearing and braking mechanism is setup in the rotation tube. The said braking mechanism is composed of the fixed mount and centrifugation brake shoe installed on axis. Positioning mechanism is ratchet positioner. Stopping male tab is setup on inner surface of the centrifugation brake shoe. The transmission mechanism is composed of more than three groups of planet gear, and transmission ratio is higher than 1:32. Ratchet positioner includes more than 6 teeth. After curtain is recovered fully, torsion of the torsion spring will not act on curtain. The invention eliminates folding trace on curtain so as to raise quality of manual projection curtain.
Description
Technical field
Not folded manual projection curtain of the present invention belongs to the projection screen field, particularly relates to a kind of manual projection curtain.
Background technology
The manual projection curtain that uses is by trombone slide now, curtain, the torque spring assembly, detent mechanism, tube and shell are formed, trombone slide is connected an end of curtain, the other end of curtain is connected on the tube, under the effect of torque spring assembly, the rotation by tube on tube, is installed reducing gear and steady arm with the curtain backrush in tube, pass through reducing gear, reduce curtain backrush speed, and just work when curtain is drop-down of detent mechanism, when curtain reclaims, withstand two end caps of shell and realize the location by the trombone slide that is fixed on another degree end of curtain, the torsion of torque spring still acts on tube and is delivered on the curtain, and curtain can be subjected to a bigger pulling force effect for a long time, when curtain twists on the tube, curtain is not to be pressed in one along sliding plane, so under the situation of the long-term pressurized of curtain, can form the fold vestige of a rule level, influenced the quality of projection screen, the image of projection is also exerted an influence.
When being recovery, another kind of manual projection curtain can locate, detent mechanism generally all is the moving circle of tube revolution, can realize twice location, the diameter of supposing tube is 43mm, curtain motion=43 pi/2s=67.5mm could realize one-time positioning so, because back, location tube has certain rotation, after curtain reclaims fully, detent mechanism can not be in the state of location fully, withstand two end caps of shell and realize the location by the trombone slide that is fixed on another degree end of curtain, the torsion of torque spring still acts on tube and is delivered on the curtain, and curtain can be subjected to a bigger pulling force effect for a long time.
The content of invention
The objective of the invention is to avoid the deficiencies in the prior art part and a kind of reducing gear and detent mechanism one are provided, easy for installation, cost reduces, use easy to operate, high-quality not folded manual projection curtain, adopt the number of times that increases the tube location, make curtain in the minimum scope of motion, just can realize the location, therefore curtain is under the state that reclaims fully, detent mechanism can be in the state of location, remove the effect that curtain is subjected to torque spring, eliminate the fold vestige that curtain forms, improved the quality of manual projection curtain.
The objective of the invention is to reach by following measure, it is by trombone slide for a projection screen, curtain, the torque spring assembly, tube and shell are formed, trombone slide is connected an end of curtain, the other end of curtain is connected on the tube, under the effect of torque spring assembly, rotation by tube with the curtain backrush on tube, in tube, be provided with projection screen deceleration detent mechanism, the deceleration detent mechanism is made up of gear train and detent mechanism, gear train and detent mechanism are set in deceleration box, gear box cover covers on deceleration box, the O-ring seal gland is installed on the core, self-locking spring axle core is installed on the axle core, on self-locking spring axle core, be with self-locking spring, the planet wheel fixed mount is installed in the self-locking spring skin, self-locking spring one end and planet wheel fixed mount are fixed, on the planet wheel fixed mount, planet wheel is arranged, planet wheel cooperates with annular wheel on the deceleration box, gear train is made up of planet wheel, planet wheel cooperates with the planet wheel fixed mount, planet wheel drives the planet wheel fixed mount and rotates, speed change transmission by planetary gear set, rotation is delivered to arrestment mechanism, arrestment mechanism is made up of planetary gear braking fixed mount and centrifugal brake-shoe, one end of planetary gear braking fixed mount cooperates with planet wheel, driving the planetary gear braking fixed mount rotates, on the planetary gear braking fixed mount, be symmetrically arranged with centrifugal shaft, centrifugal brake-shoe is installed on axle, the deceleration box inside surface is as brake drum, clockwise rotate drive curtain relieving in the process at tube, tube drives deceleration box by the rubber strip driving wheel and rotates, annular wheel on the deceleration box cooperates with planet wheel, the planet wheel fixed mount drives self-locking spring and rotates together, cooperate through the planet wheel transmission more than a group, centrifugal brake-shoe on the planetary gear braking fixed mount is rotated, because the planet wheel fixed mount drives self-locking spring and rotates together, make the rotating speed of planetary gear braking fixed mount low, can not produce enough centrifugal force opens centrifugal brake-shoe, centrifugal brake-shoe can not contact with the brake drum of deceleration box inside surface and produce friction brake force, rotate counterclockwise drive curtain backrush in the process at tube, tube drives deceleration box by the rubber strip driving wheel and rotates, annular wheel on the deceleration box cooperates with planet wheel, the planet wheel fixed mount drives self-locking spring and rotates together, because the effect of tightening up of self-locking spring, self-locking spring tightens up on self-locking spring axle core, planet wheel fixed mount and self-locking spring axle core are fixed by self-locking spring, cooperate through the planet wheel transmission more than a group, centrifugal brake-shoe on the planetary gear braking fixed mount is rotated, because the planet wheel fixed mount drives, the rotating speed of planetary gear braking fixed mount is strengthened, producing enough centrifugal force opens centrifugal brake-shoe, centrifugal brake-shoe contacts with the brake drum of deceleration box inside surface and produces friction brake force, because the size of friction brake force is regulated with rotation speed change, can make curtain backrush speed even, the low speed backrush.Overheated for the brake drum friction that prevents centrifugal brake-shoe and deceleration box inside surface, a liquid injection port is set on deceleration box, inject liquid coolant by liquid injection port to deceleration box, it is overheated to prevent to rub.Outside surface at centrifugal brake-shoe is provided with spaced boss, and boss contacts with brake drum and produces friction brake force.Detent mechanism is the ratchet locating device, and ratchet is installed on the core, and the inside surface of centrifugal brake-shoe is provided with stop ledge, and ratchet cooperates with stop ledge on the centrifugal brake-shoe inside surface, reaches the purpose of location.In order to increase the number of times of tube location, make curtain in the minimum scope of motion, just can realize the location, gear train is made up of planet wheel more than three groups, and ratio of gear reaches more than 1: 32, promptly works as tube and rotates a circle, and centrifugal brake-shoe will rotate 32 circles.Stop gear has 6 more than the tooth,, centrifugal brake-shoe has two, and is that rotation is symmetrically distributed.Can realize approximate stepless location, promptly curtain can be realized the location in any position, so curtain is under the state that reclaims fully, and detent mechanism can be in the state of location, removes the effect that curtain is subjected to torque spring.
The ratchet locating device is installed on the axle core, and ratchet is fixed on the core, does not rotate with tube, and the stop ledge that is provided with on the inside surface of centrifugal relatively brake-shoe is actionless, can play effect at any time.
In order to prevent that curtain from can not reclaim under the relieving state fully, a deep-slotted chip breaker is set on the planet wheel fixed mount, self-locking spring one end is connected with deep-slotted chip breaker on the planet wheel fixed mount, because deep-slotted chip breaker leaves movable rotary space for self-locking spring one end, after realizing the location, the revolution activity space of self-locking spring reclaims curtain.
The present invention is after curtain reclaims fully, and the torsion of torque spring can not act on the curtain, so curtain can not form the fold vestige of a rule because of long-term tension power effect, eliminates the fold vestige that curtain forms, and has improved the quality of manual projection curtain.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is deceleration detent mechanism structural representations of the present invention.
Accompanying drawing 3 is detent mechanism locking state synoptic diagram of the present invention.
Accompanying drawing 4 is the deep-slotted chip breaker structural representations on the planet wheel fixed mount of the present invention.
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, projection screen of the present invention is by trombone slide 30, curtain 31, deceleration detent mechanism, torque spring general name, tube 32 and shell are formed, trombone slide is connected an end of curtain, and the other end of curtain is connected on the tube, the rotation by tube with the curtain backrush on tube, be provided with projection screen deceleration detent mechanism in tube, the deceleration detent mechanism is made up of gear train and detent mechanism.
As shown in Figure 2, projection screen deceleration detent mechanism of the present invention is arranged in the projection screen tube, in tube, be provided with projection screen deceleration detent mechanism, driving deceleration box 5 by the rubber strip driving wheel in the tube 12 rotates, the deceleration detent mechanism is installed on the tube by axle core 14, gear train and detent mechanism are set in deceleration box, gear train is a planet wheel, detent mechanism is a ratchet, gear box cover 1 covers on deceleration box 5, fixing by screw 15, O-ring seal gland 3 is installed on the core, be provided with O-ring seal 2 and 16 at the O-ring seal gland, back-up ring 17 is arranged on the axle core, self-locking spring axle core 4 is installed on the axle core, on self-locking spring axle core, be with self-locking spring 18, planet wheel fixed mount 6 is installed in the self-locking spring skin, self-locking spring one end is connected by a deep-slotted chip breaker with the planet wheel fixed mount, gear train is made up of three groups of planet wheels, include central gear planet carrier 10, planet wheel fixed mount 6, planet wheel back-up ring 8, back-up ring 9 and planet wheel 7, planet wheel is fixed on central gear planet carrier and the planet wheel fixed mount, planet wheel cooperates with annular wheel 25 on the deceleration box, speed change transmission by planetary gear set, rotation is delivered to arrestment mechanism, ratio of gear is 1: 64, promptly, encloses tube when rotating one, centrifugal brake-shoe will rotate 64 circles, arrestment mechanism is made up of central gear braking fixed mount 19 and centrifugal brake-shoe 11, central gear braking fixed mount cooperates with planet wheel, planet wheel drives central gear braking fixed mount and rotates, on central gear braking fixed mount, be symmetrically arranged with centrifugal shaft 24, centrifugal brake-shoe is installed on centrifugal shaft, the deceleration box inside surface is as brake drum, a liquid injection port is set on deceleration box, injects liquid coolant to deceleration box, by seal 20 and screw 21 sealings by liquid injection port.The axle core plays the stationary shaft effect, self-locking spring axle core and stop gear 13 are fixedly mounted on the core, and the deceleration box inside surface is provided with a liquid injection port 23 as brake drum 22 on deceleration box, inject liquid coolant by liquid injection port to deceleration box, by seal 20 and screw 21 sealings.
As shown in Figure 3, detent mechanism of the present invention is the ratchet locating device, ratchet 13 is installed on the core, on central gear braking fixed mount, be symmetrically arranged with centrifugal shaft 24, centrifugal brake-shoe 11 is installed on centrifugal shaft, the inside surface of centrifugal brake-shoe is provided with stop ledge 26, ratchet cooperates with stop ledge on the centrifugal brake-shoe inside surface, and gear train is made up of three groups of planet wheels, and ratio of gear is 1: 64, promptly, encloses tube when rotating one, centrifugal brake-shoe will rotate 64 circles, and stop gear has 10 teeth, and centrifugal brake-shoe has two, and be that rotation is symmetrically distributed, can realize approximate stepless location, promptly curtain can be realized the location in any position, so curtain is under the state that reclaims fully, detent mechanism can be in the state of location, removes the effect that curtain is subjected to torque spring.The planet wheel fixed mount clockwise rotates, and self-locking spring opens, and does not play self-locking action, and self-locking spring rotates around self-locking spring axle core, and planetary gear system stops to do accelerated motion, and centrifugal brake-shoe does not play braking action.Under effect, curtain is opened in external force, tube is then driven by curtain and turns clockwise, the annular wheel of deceleration box drives planetary gear system opens centrifugal brake-shoe do accelerated motion under the acceleration centrifugal action, with brake drum friction and the generation damping force in the deceleration box.When locating in the curtain downdraw process, make that curtain is static not to move, the planetary gear system stop motion, the stop ledge 26 that centrifugal brake-shoe 11 is provided with on the effect inside surface of self gravitation is stuck in the tooth of stop gear, and curtain is realized the location.After curtain reclaims fully, the stop ledge of centrifugal brake-shoe can be stuck in the tooth of stop gear, the torsion of torque spring only acts on the stop gear, and can not act on the curtain, so curtain can not form the fold vestige of a rule because of long-term tension power effect.
As shown in Figure 4, the present invention is provided with a deep-slotted chip breaker 27 on planet wheel fixed mount 6, self-locking spring 18 1 ends are connected with deep-slotted chip breaker on the planet wheel fixed mount, because deep-slotted chip breaker leaves movable rotary space for self-locking spring one end, after realizing the location, the revolution activity space of self-locking spring reclaims curtain.
Claims (4)
1, a kind of not folded manual projection curtain, projection screen is by trombone slide, curtain, the deceleration detent mechanism, the torque spring general name, tube and shell are formed, trombone slide is connected an end of curtain, the other end of curtain is connected on the tube, in tube, be provided with projection screen deceleration detent mechanism, the deceleration detent mechanism is made up of gear train and detent mechanism, gear box cover covers on deceleration box, the O-ring seal gland is installed on the core, self-locking spring axle core is installed on the axle core, on self-locking spring axle core, be with self-locking spring, the planet wheel fixed mount is installed in the self-locking spring skin, self-locking spring one end and planet wheel fixed mount are fixed, on the planet wheel fixed mount, planet wheel is arranged, planet wheel cooperates with annular wheel on the deceleration box, arrestment mechanism is made up of planetary gear braking fixed mount and centrifugal brake-shoe, on the planetary gear braking fixed mount, be symmetrically arranged with centrifugal shaft, centrifugal brake-shoe is installed on axle, a liquid injection port is set on deceleration box, outside surface at centrifugal brake-shoe is provided with spaced boss, and detent mechanism is the ratchet locating device, and the inside surface of centrifugal brake-shoe is provided with stop ledge, it is characterized in that gear train is made up of planet wheel more than three groups, ratio of gear reaches more than 1: 32, and stop gear has 6 more than the tooth, and centrifugal brake-shoe has two, and be that rotation is symmetrically distributed, ratchet is installed on the core.
2, not folded manual projection curtain according to claim 1 is characterized in that being provided with a deep-slotted chip breaker on the planet wheel fixed mount, self-locking spring one end is connected with deep-slotted chip breaker on the planet wheel fixed mount.
3, not folded manual projection curtain according to claim 1 is characterized in that gear train is made up of three groups of planet wheels, and ratio of gear reaches 1: 64, and stop gear has 10 teeth, and centrifugal brake-shoe has two.
4, not folded manual projection curtain according to claim 1 is characterized in that ratchet is fixed on the core, and the stop ledge that is provided with on the inside surface of centrifugal relatively brake-shoe is a transfixion.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101009432A CN100353257C (en) | 2005-11-01 | 2005-11-01 | Not folded manual projection curtain |
| FR0606763A FR2889749B3 (en) | 2005-08-12 | 2006-07-24 | DECELERATION AND LOCKING MECHANISM FOR A PROJECTION SCREEN AND A MANUALLY CONTROLLED PROJECTION SCREEN USING THE MECHANISM |
| US11/499,567 US7706067B2 (en) | 2005-08-12 | 2006-08-04 | Decelerating and locking mechanism for a projection screen and the manually operated projection screen using the mechanism |
| JP2006006361U JP3126248U (en) | 2005-08-12 | 2006-08-07 | Deceleration and lock mechanism for projection screen and manually operated projection screen using this mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101009432A CN100353257C (en) | 2005-11-01 | 2005-11-01 | Not folded manual projection curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1760753A true CN1760753A (en) | 2006-04-19 |
| CN100353257C CN100353257C (en) | 2007-12-05 |
Family
ID=36706869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101009432A Active CN100353257C (en) | 2005-08-12 | 2005-11-01 | Not folded manual projection curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100353257C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840972A (en) * | 2016-05-30 | 2016-08-10 | 潘爱松 | Simple projection curtain cloth |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1807258U (en) * | 1959-09-19 | 1960-03-03 | Artur Fischer | PROJECTION WALL. |
| CN2643354Y (en) * | 2003-09-10 | 2004-09-22 | 深圳市维佳伟业科技发展有限公司 | Hand power screen retractor |
| CN2720483Y (en) * | 2004-08-13 | 2005-08-24 | 广州美视晶莹银幕有限公司 | Projection screen speed-reducing mechanism |
| CN2874558Y (en) * | 2005-11-01 | 2007-02-28 | 广州美视晶莹银幕有限公司 | Hand operate projection screen without pleat |
-
2005
- 2005-11-01 CN CNB2005101009432A patent/CN100353257C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840972A (en) * | 2016-05-30 | 2016-08-10 | 潘爱松 | Simple projection curtain cloth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100353257C (en) | 2007-12-05 |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20231129 Address after: 510000 43 Guomao Avenue South, Hualong Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Meishi Innovation Technology Co.,Ltd. Address before: Panyu District City, Guangdong province 511400 Guangzhou bridge Yu Shanxi Road No. 363 Patentee before: GRANDVIEW CRYSTAL SCREEN Co.,Ltd. |