CN2312317Y - Operating mechanism for roll-type door with drive - Google Patents

Operating mechanism for roll-type door with drive Download PDF

Info

Publication number
CN2312317Y
CN2312317Y CN 97231151 CN97231151U CN2312317Y CN 2312317 Y CN2312317 Y CN 2312317Y CN 97231151 CN97231151 CN 97231151 CN 97231151 U CN97231151 U CN 97231151U CN 2312317 Y CN2312317 Y CN 2312317Y
Authority
CN
China
Prior art keywords
ring gear
wheel
rolling door
motor
operating mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
CN 97231151
Other languages
Chinese (zh)
Inventor
刘瑞发
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 97231151 priority Critical patent/CN2312317Y/en
Application granted granted Critical
Publication of CN2312317Y publication Critical patent/CN2312317Y/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Landscapes

  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The utility model relates to an operating mechanism for a roll-type door driven by electricity, which is used for the roll-type door or a shutter. Curtain pieces of the roll-type door or the shutter are supported on a pair of cylinder wheels which are rotatablely driven by a shaft. A driving mechanism of the utility model comprises a motor which can rotate reversibly, wherein the motor is fixed on one cylinder wheel and is positioned between the two cylinder wheels, and the motor controls a gear set through a device to drive the cylinder wheels to rotate. When the motor keeps in a state of no rotation, the motor is driven to rotate by a latching device. When the latching device is loosened, a transmission machine member rotates together with the cylinder wheels, and the roll-type door is operated by the motor and hands to be opened and closed.

Description

Electrodynamic type rolling door operating mechanism
The utility model relates to a kind of electrodynamic type rolling door operating mechanism, refers to that especially curtain sheet relevant for rolling door or shutter is wound to it and supports tube wheel (or tread ring wheel) even or certainly should supports tin take turns the operating mechanism of emitting the rolling door switch.
Using chain and chain-wheel mechanism is prior art with the operation rolling door, and this kind system is used often because of needs, loud and need intermittent oiling to reduce friction and and the meaning of getting married not to the utmost during operation.
With manipulating of electric device control rolling door or shutter also is existing, and two kinds of relevant motor drive mechanisms can be seen in Australia patent application case AUA30718/77 and the Berli of B.W.N Industrial Co., Ltd; No. 44163/79 application case of Dai Weisenmen industry Co., Ltd.Two kinds of mechanisms in the aforementioned patent applications case utilize a motor with reduction gear and motor one same-action, this reduction gear end is a pinion, and this pinion is positioned to ring gear engagement so that the direction rotation that rolling door curtain sheet court puts down or rolls.Motor in the last example all is contained on the Movable bracket, and can borrow unclamp with manual can loose locking devicen to a pinion position of engagement ring generating gear no longer, so rolling door curtain sheet is that available hand is with it rise or fall, in two kinds of configurations, motor and support bracket thereof are to be installed in one of curtain sheet tube wheel or tread ring wheel outside side, therefore the equipment of these controlling organizations needs extra room or space, the gear of motor or its motion is exposed to outer and the accidental damage that for example bumped against or hit may take place, and this mechanism may accumulate dust and dirt particles and hinder its running.
Main purpose of the present utility model provides a kind of electrodynamic type rolling door or shutter behaviour mechanism of improvement, need not have the essential extra room of general device or space and works less generation because of external force is damaged of rolling door now.
The further purpose of the utility model is providing a kind of electrodynamic type rolling door assembly of improvement, and it has improved outward appearance, and cost is lower, and can be easy to use hand operation when having a power failure.
In brief, a kind of have a rolling door that the door curtain sheet is supported in the last form of a pair of tube wheel that is driven by a rotation, it comprises a reversible motor according to driving mechanism of the present utility model, being installed on (imagination) space that capsule defined that one of this support tube wheel goes up and be supported between the tube wheel contains, motor and tube wheel are arranged to rotate together, and this motor secure bond one terminal is the gear train of a drive pinion and a driving member.For example a ring gear or sprocket wheel and chain equipment are supported on the door-hinge of pinion drive, so configuration can make when rolling door is operated by motor power, drive member is to remain on the situation of not rotating and pinion is driven in rotation, but if in motor failure or the power failure, this driving member can be loosened out and the together rotation of tube wheel from its not rotation situation, can be with this door of hand switch.
More specifically, the purpose of the utility model electrodynamic type rolling door operating mechanism can reach by following measure:
Technical scheme one:
By a kind of transmission mechanism that is used to make rolling door curtain sheet or shutter to roll or put down from the support tube wheel of its a pair of axially spaced-apart, this a pair of tube wheel is to be supported on the transverse axis and to rotate, and these two each end in abutting connection with this of wheel constitute, wherein:
One is contained in the reversed motor that together rotates with it on one of these the two wheels person, and this motor is arranged on this wheel inboard of neighbour's installing motor in this a pair of tube wheel, and sets firmly the reduction gear that an end is a drive pinion in the running.
One ring gear is located at the outside of this wheel in this a pair of tube wheel, and this ring gear and this pinion, and locking devicen prevent that promptly this ring gear from rotating relative to this.
Wherein this locking devicen can be loose, and this wheel in a pair of tube wheel of this ring gear and this is together rotated.
Comprise that one axially is located at the outside of this wheel in this a pair of tube wheel, this ring gear is arranged between this wheel and this fixed body.
Wherein this can loose locking devicen comprises and holds the pin that is located on this fixed body, and this pin can be lockable between the latched position of not rotating and this ring gear released position free to rotate at this ring gear and move.
Wherein this pin cooperates loosely with a compression spring, and this promptly sells this pin of position packing of deciding ring gear this latch lock.
Comprise that one takes turns coaxial axle bush member with this, and be fixed on this wheel in this a pair of tube wheel the outside and with its rotation, this axle bush members shaft to length enough support this fixed body, be provided with and step up device this fixed body and this ring gear are kept in touch relation, prevent that also it from moving axially simultaneously.
Wherein this ring gear is this drive pinion of permanent engagement.
Wherein this ring gear comprises that one has the cup shell of the interior gear teeth, the wall of this cup shell define a central opening and wherein this fixed body comprise an annular plate-like member, this annular plate-like member tool one is taken turns lining with the circular orientation of this spigot shaft coaxle of tabular component and is held fixed this ring gear and prevents that its warp-wise from moving, the outer dia of this location hub is slightly smaller than the diameter of this ring gear central opening, the portion of external surface of this hub is a bearing surface, contacts this wall and the central opening that defines.
Comprise that the bearing that will support this is fixedly connected to the fastening devices of this fixed body, this fastening devices comprises a connecting rod that is fixed in this fixed body and axially outwards stretches, and a fixed body that is not installed in rotationally on one of these supports person, this connecting rod is connected with this fixed block regularly.
This pinion wherein, this ring gear and this fixed body all are that preferably nylon is made with synthetic plastic material.
Technical scheme two:
By a kind of transmission mechanism that is used to make rolling door curtain sheet or shutter to roll or put down from the support tube wheel of its a pair of axially spaced-apart, this a pair of tube wheel is to be supported on the transverse axis and to rotate, and these two each end in abutting connection with this of wheel constitute, wherein:
One is contained in the reversed motor that together rotates with it on one of these the two wheels person, and this motor is arranged on this wheel inboard of neighbour's this motor of installing in this a pair of tube wheel, and sets firmly the reduction gear that an end is a drive pinion in the running.
One can reverse motor, with fixing apparatus with this motor be fixed on one of these two wheels on the person promptly when this wheel rotation in these two wheels, this motor also is integral rotation, and this motor is that this wheel adjacent medial side place that is located in these wheels also sets firmly the reduction gearing that an end is a drive pinion in its running.
One fixed body axially is located at the outside of these wheels, and one is located at the ring gear between one of these two wheels person and this fixed body, and this ring gear and pinion permanent engagement, and releasable locking devicen are located between this ring gear and this fixed body.
Configuration like this is borrowed ring gear and can be maintained fixed by loose locking devicen, start this motor promptly start this pinion around this fixed gear to rotate this wheel, according to selectively rising or falling rolling door curtain sheet, be about to this and can loose locking devicen unclamp that this wheel that can make in this ring gear and these wheels rotates simultaneously and available hand is pushed to rolling door curtain sheet successively or fallen.
Wherein this can loose locking devicen comprises and holds the pin that is located on this fixed body, and this pin can be lockable between the locked instrument that do not rotate and this ring gear released position free to rotate at this ring gear and move.
This pinion wherein, this ring gear and this fixed body all are that preferably nylon is made with synthetic plastic material.
The utility model compared with prior art has following advantage:
This kind configuration makes this driving member by means of keeping static with nibbling tightly of this locking devicen of can loosening, start this motor and this pinion is driven around this static driving member can rotate this wheel raise or fall rolling door curtain sheet, but separate this locking devicen of can loosening this driving member and this wheel are together rotated in case the available hand of rolling door curtain sheet by its rising or fall.
Preferably this driving member be one with the ring gear of pinion permanent engagement.
Innovation and creation according to the applicant; the gear of motor and cooperation thereof is when rotation; the support tube wheel of rolling door curtain sheet together rotates with it; motor holding not only can be protected in rolling door curtain sheet center and be avoided making frame for movement to be subjected to external impairment; and prevent in dirt or the gravel access mechanism; no matter rolling door is electrodynamic type operation or with hand operation; this pinion all often meshes this ring gear; this configuration with prior art is just opposite, separate with ring gear that pinion in the prior art needs to cooperate with it or the configuration mode that meshes compare be difficult for impaired.
Below describe an embodiment in more detail proving absolutely the technical solution of the utility model, description is with reference to correlative type:
Fig. 1. the end-view of the utility model electrodynamic type rolling door operating mechanism.
Fig. 2. motor is installed in the vertical cross-section diagram on the tube wheel.
Fig. 3. be the partial cross section end-view of 3-3 line among Fig. 2.
Fig. 4. be the sectional view of 4-4 line among Fig. 3.
In the present embodiment, one rolling door assembly 10 comprises a fixing or static fulcrum 11, utilize one to be arranged on the bracket of right angle type 13 that adjoins fulcrum 11 2 ends and to be erected on the opening of wall 12, fulcrum 11 be with U-shaped nut 14 and nut 15 bolts tightly on support 13.Two wheels or 18 (only showing one among the figure) of tread ring wheel are by fulcrum 11 driven rotary, two wheels or each end of tread ring wheel in abutting connection with fulcrum, and tread ring wheel 18 is to adopt existing design, has several spokes like compound plate and stretches out from a hub 19 that slips at fulcrum 11.One can be bent metallic coil door curtain sheet 20 (existing design) reeled around these two wheels 18 or roll and the rotation of tube wheel 18 to make rolling door curtain sheet 20 go up or fall be doorway on the switch wall 12, the side of rolling door curtain sheet 20 is the sliding vertical flute profile guiding devices 22 installed in the both sides, doorway of wall 12 that hold.
Install a reversible motor 23 for rotation drives two wheels 18, one of this motor secure fit comprises the gear-box 24 of a reduction gear, the speed reducing ratio of this reduction gearing can select one be fit to desire rolling door switching speed person.Motor 23 and gear-box 24 screw togather the tightening member 26 of hub 27 on the gearbox cover by means of the opening on the spoke that passes tube wheel 18 and are fixed on one of two wheels 18 person neighbour in the periphery place.Motor 23 inwardly is arranged on tube wheel 18 centers and fixes on it at direction of principal axis, and be contained in the center of rolling door curtain sheet, promptly be contained in the space that penetralia defined of curtain sheet coiling or tortuous 28, output shaft 29 is ejaculation shape ground from gear-box 24 and extends the opening 30 on a wheel 18 and carry a usefulness bolt 34 pinion 33 of combination with it.Ring gear 35 engagements of the gear teeth in a pinion 33 and a gear or the tool, this gear or ring gear are located at one and are fixed on the axle bush 36 of axle 11 driven rotary, and axle bush 36 is taken turns 18 with bolt and this tube and combined and with its rotation.Offer a central opening on cup-shaped substantially and its basal wall of ring gear 35, the diameter of this opening is bigger than the external diameter of axle bush 36.Ring gear 35 in the present embodiment, pinion 33 and axle bush 36 all are made with nylon.
The main base frame 38 that axle bush 36 upper supports one are fixed or do not rotated, axially be located at side and contact with it outside the ring gear 35, the interior hub 41 outstanding central openings that main base frame 38 tools one one is shaped through ring gear 35, hub 41 is to make in order to stationary annular gear 35 bearing surface that radius moves and provides a ring gear 35 to rotate thereon relative to axle bush 36 is provided, main base frame 38 is borrowed a connecting rod 39 to be fixed on its outside and is held and decide, outer end bearing one fixed block 40 of axle connecting rod 39, this fixed block 40 is not to be arranged on rotationally on this support 13, in this embodiment, fixed block 40 is shaped on a L shaped groove 42, and the horizontal arm 43 of support 13 extends through this L shaped groove 42.For example, what can recognize is that this main base frame 38 is only fixed and kept static to these axle 11 usefulness headless screws with it, and main body base 38 and ring gear 35 are to touch the annular shoulder 44 of vicinal in one of axle bush 36 end with an opening clamp ring 43.
With this rolling door of motor switch the time, must make ring gear 35 be maintained fixed so that pinion 33 itself drives rotation.If a locking pin 45 that can unclamp with main base frame 38 makes main body base 38 and ring gear 35 connecting pins 45 comprise an outer tubular sleeve 48 cover unification axostylus axostyles 49, this axostylus axostyle holds in the opening that closes on the wall 37 of a ring gear 35.One the compression spring 52 hold towards bar 49 close the position extension with its packing.The head end 53 of pin 45 is mentioned, and then this bar is retracted to a position, promptly no longer nibbles tightly with ring gear in this place.Pin 45 is provided with a cover plate 54 that screws togather with main base frame 38.Any other unclamped linkage between main base frame 38 and ring gear 35 all can adopt, but essential condition need its can be easy in requisition for and separate and once again dress close.
Under the normal operation of door, main base frame 38 and ring gear 35 are to be connected to each other, even it does not rotate and motor 23 starts and promptly causes tube wheel 18 itself together to rotate with motor 23, ring gear 35 in the pinion of the gear-box 24 that cooperates with motor and transmission.Direction by the motor output shaft rotation determines opening or closing of rolling door curtain sheet 20.
Break down or when having a power failure as motor, one people is this rolling door of available hand operation, this only needs from pin 45 extended positions, be that axostylus axostyle unclamps this pin through wall 50 axial projections place of ring gear 35, when pin 45 withdrawals, ring gear 35 relative fulcrums 11 can rotate freely and tube wheel (together rotating with its motor that is set firmly) also can rotate freely, rolling door curtain sheet 20 can raise with hand or fall very easily, when this rolling door during so with hand operation, this motor gear case and pinion be together rotation all, this kind configuration can be avoided the axle (possibly can't implement in some cases) of rotation motor 23, and it is easy therefore raising with hand or fall this rolling door real as can be known.
The power supply of motor 23 be borrow one be not shown among the figure circuit for it, this motor comprises brush 55 that is installed on the main base frame 38 and the slip ring 56 that is positioned at axle bush 36 axial inner ends, this circuit can adjust motor supply current so that curtain sheet 20 open or close.Circuit can comprise that a response has been set at the responding device of motor 23 runnings with the signal radio code of switch curtain sheet 20.The code signal can be sat by a user and can reach the purpose of open and close onboard from being located at the radio transmitter emission on the car.
As shown in Figure 3, the microswitch 57 of the high-low limit that rolling door curtain sheet 20 moves on can main base frame controlled, this microswitch has contact 58 (only showing one in the drawings), these contacts can be by cam 59,60 contacts, this two gear is by a camshaft 61 interlocks, this cam shaft gear meshes an idle pulley 62, and this idle pulley engagement is contained in the travelling gear 63 on the rotation axle bush 36.One of cam 59,60 person control the mobile upper limit and in addition the person control its lower limit.Reach its upper limit or in limited time following when this rolling door of operation, one of two cams person touches its pairing switch contact and opens this microswitch 57, and this switch of breakdown can be detected and turn off motor by the running circuit of motor 23.The operation of switch also can make motor direction reverse and drive, and so when motor drove once more, rolling door curtain sheet oppositely moved, and can be sent out the machine of establishing or be located at by a remote control radio as the operation of above-mentioned rolling door to be bordering on the hand switch of a locating operation.
(not shown it) is provided with an axis of rotation that is held on the end bearing in the alternate embodiment of the foregoing description, and the tube wheel is fixed in axle and goes up and together rotate with it among this embodiment.This ring gear is propped up by this intermediate bearing of installing rotation and is held on this axle.Stationary body also can be supported on this intermediate bearing, or utilizes another bearing.(be not shown among the figure) in the embodiment of another variation, this ring gear is replaced by a sprocket wheel by the axle driven rotary, between this sprocket wheel and this travelling gear a chain drive is arranged.Movable pin 45 is to be arranged to releasably the pinning sprocket wheel so that rolling door is that sprocket wheel can keep static when then together rotating with pinion with hand operation with electric power operation or when it.But the embodiment of above-mentioned or other variations is all in the technical scheme scope of applicant's utility model.
Summary considers that but these above-mentioned embodiment can be provided by the very simple operation of electrodynamic type rolling door operating mechanism and the important improvement of device of but providing of the utility model.Operating mechanism of the present utility model is easy to be adopted by existing rolling door assembly, and also can use in new-type rolling door device certainly.

Claims (13)

1. electrodynamic type rolling door operating mechanism, be used to make rolling door curtain sheet or shutter to take turns the transmission mechanism of rolling or putting down by a kind of from the support tube of its a pair of axially spaced-apart, this a pair of tube wheel is to be supported on the transverse axis and to rotate, and these two each end in abutting connection with this of wheel constitute, and it is characterized in that:
One is contained in the reversed motor that together rotates with it on one of these the two wheels person, and this motor is arranged on this wheel inboard of neighbour's installing motor in this a pair of tube wheel, and sets firmly the reduction gear that an end is a drive pinion in the running;
One ring gear is located at the outside of this wheel in this a pair of tube wheel, and this ring gear and this pinion, and locking devicen prevent that promptly this ring gear from rotating relative to this.
2. electrodynamic type rolling door operating mechanism according to claim 1 is characterized in that: wherein this locking devicen can be loose, and this wheel in a pair of tube wheel of this ring gear and this is together rotated.
3. electrodynamic type rolling door operating mechanism according to claim 1 and 2 is characterized in that: comprise that one axially is located at the outside of this wheel in this a pair of tube wheel, this ring gear is arranged between this wheel and this fixed body.
4. electrodynamic type rolling door operating mechanism according to claim 3, it is characterized in that: wherein this can loose locking devicen comprises and holds the pin that is located on this fixed body, and this pin can be lockable between the latched position of not rotating and this ring gear released position free to rotate at this ring gear and move.
5. electrodynamic type rolling door operating mechanism according to claim 4 is characterized in that: wherein this pin cooperates loosely with a compression spring, and this promptly sells this pin of position packing of deciding ring gear this latch lock.
6. electrodynamic type rolling door operating mechanism according to claim 3, it is characterized in that: comprise that one takes turns coaxial axle bush member with this, and be fixed on this wheel in this a pair of tube wheel the outside and with its rotation, this axle bush members shaft to length enough support this fixed body, be provided with and step up device this fixed body and this ring gear are kept in touch relation, prevent that also it from moving axially simultaneously.
7. electrodynamic type rolling door operating mechanism according to claim 1 and 2 is characterized in that: wherein this ring gear is this drive pinion of permanent engagement.
8. electrodynamic type rolling door operating mechanism according to claim 6, it is characterized in that: wherein this ring gear comprises that one has the cup shell of the interior gear teeth, the wall of this cup shell define a central opening and wherein this fixed body comprise an annular plate-like member, this annular plate-like member tool one is taken turns lining with the circular orientation of this spigot shaft coaxle of tabular component and is held fixed this ring gear and prevents that its warp-wise from moving, the outer dia of this location hub is slightly smaller than the diameter of this ring gear central opening, the portion of external surface of this hub is a bearing surface, contacts this wall and the central opening that defines.
9. electrodynamic type rolling door operating mechanism according to claim 3, it is characterized in that: comprise that the bearing that will support this is fixedly connected to the fastening devices of this fixed body, this fastening devices comprises a connecting rod that is fixed in this fixed body and axially outwards stretches, and a fixed body that is not installed in rotationally on one of these supports person, this connecting rod is connected with this fixed block regularly.
10. electrodynamic type rolling door operating mechanism according to claim 3 is characterized in that: this pinion wherein, this ring gear and this fixed body all are that preferably nylon is made with synthetic plastic material.
11. electrodynamic type rolling door operating mechanism, be used to make rolling door curtain sheet or shutter to take turns the transmission mechanism of rolling or putting down by a kind of from the support tube of its a pair of axially spaced-apart, this a pair of tube wheel is to be supported on the transverse axis and to rotate, and these two each end in abutting connection with this of wheel constitute, and it is characterized in that:
One is contained in the reversed motor that together rotates with it on one of these the two wheels person, and this motor is arranged on this wheel inboard of neighbour's this motor of installing in this a pair of tube wheel, and sets firmly the reduction gear that an end is a drive pinion in the running;
One can reverse motor, with fixing apparatus with this motor be fixed on one of these two wheels on the person promptly when this wheel rotation in these two wheels, this motor also is integral rotation, and this motor is that this wheel adjacent medial side place that is located in these wheels also sets firmly the reduction gearing that an end is a drive pinion in its running;
One fixed body axially is located at the outside of these wheels, and one is located at the ring gear between one of these two wheels person and this fixed body, and this ring gear and pinion permanent engagement, and releasable locking devicen are located between this ring gear and this fixed body;
Configuration like this is borrowed ring gear and can be maintained fixed by loose locking devicen, start this motor promptly start this pinion around this fixed gear to rotate this wheel, according to selectively rising or falling rolling door curtain sheet, be about to this and can loose locking devicen unclamp that this wheel that can make in this ring gear and these wheels rotates simultaneously and available hand is pushed to rolling door curtain sheet successively or fallen.
12. electrodynamic type rolling door operating mechanism according to claim 11, it is characterized in that: wherein this can loose locking devicen comprises and holds the pin that is located on this fixed body, and this pin can be lockable between the locked instrument that do not rotate and this ring gear released position free to rotate at this ring gear and move.
13. electrodynamic type rolling door operating mechanism according to claim 11 is characterized in that: this pinion wherein, this ring gear and this fixed body all are that preferably nylon is made with synthetic plastic material.
CN 97231151 1997-12-30 1997-12-30 Operating mechanism for roll-type door with drive Revoked CN2312317Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97231151 CN2312317Y (en) 1997-12-30 1997-12-30 Operating mechanism for roll-type door with drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97231151 CN2312317Y (en) 1997-12-30 1997-12-30 Operating mechanism for roll-type door with drive

Publications (1)

Publication Number Publication Date
CN2312317Y true CN2312317Y (en) 1999-03-31

Family

ID=33943435

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97231151 Revoked CN2312317Y (en) 1997-12-30 1997-12-30 Operating mechanism for roll-type door with drive

Country Status (1)

Country Link
CN (1) CN2312317Y (en)

Similar Documents

Publication Publication Date Title
US4392392A (en) Electrically-operated roller door operating mechanism
US7246647B2 (en) Overhead door locking operator
CA2651268C (en) Overhead door locking operator
CN101214645B (en) Single slideway sleeve barrel mechanical arm
US6935403B2 (en) Motorized drapery pull system
AU2011101534B4 (en) Door Operator
CN112617572A (en) Electric curtain control device and electric curtain applying same
CN2365369Y (en) Single flexible shaft universal vehicle glass electric up-down device
MXPA00012335A (en) Encased overhead door operator.
CN2312317Y (en) Operating mechanism for roll-type door with drive
AU2002331990B2 (en) Sectional door operator alignment method
GB2063358A (en) Electrically-operated roller door mechanism
CN214630716U (en) Linear actuator for lifting table
AU2002331990A1 (en) Sectional door operator alignment method
JP5134235B2 (en) Retrofit drive unit set for switchgear
CN1550199A (en) Manual floor sweeper
CN113882301A (en) Cleaning equipment
AU2008250340A1 (en) Roller Door Drive Assembly
CN107364283B (en) Wheel structure, wheel system, application of wheel system and method for climbing/descending slope and obstacle-crossing
CN214964392U (en) Electric curtain control device and electric curtain applying same
CN200943434Y (en) Electric curtain machine
CN2406028Y (en) Electric upper-sliding protective door
JPS627351B2 (en)
CN2384541Y (en) Electric curtain rod
KR200322813Y1 (en) Two-stage parking device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C28 Revocation of patent right or utility model
RW01 Full revocation of patent right

Decision date of revocation: 20010330