CN108049797A - Door system drops in a kind of motor of rolling shutter door manually - Google Patents

Abstract

The invention provides a rolling door motor manual lowering system, which includes a motor housing, the motor shaft is arranged inside the motor housing to drive the rolling door, and also includes a brake housing, a positioning shaft and a shaft sleeved on the positioning shaft. A sleeve, the sleeve is provided with a brake pad close to the open end of the brake shell, and the side of the brake pad close to the sleeve is provided with an electromagnetic control mechanism for driving the brake pad, and the brake pad is close to the A brake disc set is provided on one side of the brake shell opening, and a spring is sleeved on the positioning shaft, the spring is coaxial with the sleeve and one end of the spring is against the sleeve; the brake disc set Connected to the motor shaft that drives the rolling shutter door, the brake disc group includes a friction disc parallel to the brake pads and a throwing block control seat, and at least two throwing blocks are connected to the throwing block control seat, adjacent to the Extension springs are connected between the throwing blocks.

Description

A rolling door motor manual lowering system

technical field

The invention relates to the technical field of electric motors, in particular to a rolling door motor manual lowering system.

Background technique

Rolling shutter doors are widely used in some public places. Generally, rolling shutter doors are driven up and down by motors. However, in the event of a power outage or other need to close the door, the door needs to be closed manually to ensure personal and property safety. The self-weight of the door body plays a big role in the process of descending, but in order to ensure that the downward speed of the door body is maintained in a slow and stable range, the method of manually pulling the chain wrapped around the brake pads is often used to lower the door body. The suffered frictional force is high, and pulling the chain also requires a lot of strength, which is not suitable for some infirm people to operate, and the operation process is also relatively cumbersome.

Contents of the invention

The object of the present invention is to provide a manual lowering system of a rolling door motor with simple and labor-saving operation and high reliability.

In order to achieve said object, the present invention adopts following technical scheme:

A rolling door motor manual lowering system, comprising a motor housing, the motor housing is provided with a motor shaft that drives the rolling door to move, and it is characterized in that it also includes a brake housing, a positioning shaft, and a shaft sleeved on the positioning shaft A sleeve, the sleeve is provided with a brake pad close to the open end of the brake shell, and the side of the brake pad close to the sleeve is provided with an electromagnetic conversion system for driving the brake pad, and the brake pad is close to the A brake disc set is provided on one side of the brake shell opening, and a spring is sleeved on the positioning shaft, the spring is coaxial with the sleeve and one end of the spring is against the sleeve;

The brake disc set is sleeved on the motor shaft, and the brake disc set includes friction plates parallel to the brake pads and a brake disc main body. At least two throwing blocks are connected to the brake disc main body, adjacent to each other. A tension spring is connected between the throwing blocks.

As a preference, the brake housing includes a rear cover and a side plate, the brake pad includes a circular main body and a protrusion located at the side end of the main body, the side plate is provided with an opening, and the protrusion set through the opening.

As a preference, the electromagnetic conversion system includes an iron core and a coil inside the iron core, and the axis of the coil is perpendicular to the brake pad.

As a preference, the main body of the brake disc includes a transmission part sleeved on the motor shaft, a friction part located on the outer edge of the transmission part, the friction part is in contact with the friction plate, and the brake The disc main body also includes a raised portion against the throwing block.

As a preference, the number of the throwing block is two, and the throwing block includes a throwing block brake pad close to the side of the brake housing, and the throwing block brake pad includes an arc-shaped friction surface.

As a preference, a baffle is arranged inside the brake housing, a stop nut is fixed on the sleeve, and a door drop rod is sleeved on the sleeve between the stop nut and the baffle, The door drop lever includes a socket portion and a wrench portion passing through the partition.

As a preference, a gap is provided between the sleeve portion and the outer surface of the casing, and the sleeve portion abuts against the partition plate and the limit nut.

As a preference, a return spring is provided between the sleeve and the rear cover, and a positioning clip is provided on the sleeve near the end of the return spring.

As a preference, a connecting piece is provided between the sleeve and the brake pad, the connecting piece includes a bottom plate and a pipe wall, the sleeve passes through the bottom plate and is fixed to the bottom plate, the pipe The wall is fixedly connected to the brake pad.

To sum up, compared with the prior art, the present invention has the advantages of: the lever structure is used to drive the brake pads to move, which saves labor and facilitates the operation of the motor located at a high place; The contact and friction with the brake housing makes the door drop at a steady speed.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the brake disc assembly of the present invention;

Fig. 3 is an enlarged view of the structure at A in Fig. 1;

Fig. 4 is a schematic diagram of the structure of the brake pad.

The labels in the figure are as follows:

1. Motor housing, 2. Motor shaft, 3. brake housing, 31. back cover, 32． clapboard, 33. side panels, 34． Lower door lever, 341. socket, 342. Wrench department, 4. positioning axis, 41． Casing, 411. limit nut, 42. brake pads, 421. main body, 422. raised, 43． spring, 44． return spring, 45． Locating circlip, 5. Electromagnetic conversion system, 51. iron core, 52． Coil, 6. Brake disc set, 61. friction plate, 62． brake disc main body, 621. transmission department, 622. friction department, 623. convex part, 63． throwing blocks, 631. Throw a block of brake pads, 64. Extension spring, 7. connector, 71. bottom plate, 72． tube wall.

Detailed ways

The present invention will be further described below in conjunction with the embodiments in the accompanying drawings.

As shown in FIGS. 1 to 4 , the rolling door motor manual lowering system includes a motor housing 1 , and a motor shaft 2 for driving the rolling door is arranged inside the motor housing 1 . The motor rotating shaft 2 rotates under the action of the motor, and then drives the door body to go up and down. The lower door system also includes a brake housing 3, a positioning shaft 4 and a sleeve 41 sleeved on the positioning shaft 4, and the positioning shaft 4 translates along the sleeve 41 to ensure its orbital movement. The brake housing 3 is located on one side of the motor housing 1 , the positioning shaft 4 passes through the interior of the brake housing 3 , and the sleeve 41 is sleeved on the positioning shaft 4 and can move along the positioning shaft 4 . The sleeve pipe 41 is provided with a brake pad 42 near the opening end of the brake housing 3, and the side of the brake pad 42 near the sleeve pipe 41 is provided with an electromagnetic conversion system 5 for driving the brake pad 42, and the side of the brake pad 42 near the opening of the brake housing 3 is provided with a brake The disk pack 6 is further sleeved with a spring 43 on the positioning shaft 4 , the spring 43 is coaxial with the bushing 41 and one end of the spring 43 is in contact with the bushing 41 . The brake disc set 6 is sleeved on the motor shaft 2 that drives the rolling door. The brake disc set 6 includes a friction plate 61 parallel to the brake pad 42 and a brake disc main body 62. At least two throwing blocks 63 are connected to the brake disc main body 62. A tension spring 64 is connected between adjacent throwing blocks 63 . The brake pads 42 are fixed on the casing 41. In the energized state, the suction generated by the electromagnetic conversion system 5 on the brake pads 42 keeps a certain gap between the brake pads 42 and the brake disc group 6. At this time, the door body is normally driven by the motor. Up and down; when the door stops at the designated height, the electromagnetic conversion system 5 stops working, and the return spring 44 promotes the brake pad 42 to move so that it is in contact with the friction pad 61. The friction force between the two and the weight of the door body are at Balance and keep the door still. When in a power-off state, the electromagnetic conversion system 5 no longer produces a load on the brake pad 42, and the brake pad 42 is in contact with the friction plate 61 under the action of the return spring 44. At this time, the sleeve 41 can be moved so that the return spring 44 compression, and then the brake pads 42 are separated from the friction pads 61. At this time, the door body descends under the effect of its own weight, and the motor shaft 2 and the brake disc group 6 rotate with the door body. When the descending speed reaches a certain value, the throwing block 63 is It is thrown under the action of centrifugal force and contacts and rubs with the inner surface of the brake housing 3, and the friction force is finally balanced with the weight of the door body, so that the door body falls at a steady speed.

The brake housing 3 includes a rear cover 31 and a side plate 33. The brake pad 42 includes a circular main body portion 421 and a protrusion 422 located at the side end of the main body portion 421. The side plate 33 is provided with an opening through which the protrusion 422 is disposed. . The opening restricts the rotation of the protrusion 422 , thereby restricting the rotation of the brake pad 42 . The electromagnetic conversion system 5 includes an iron core 51 and a coil 52 inside the iron core 51 , the axis of the coil 52 is perpendicular to the brake pad 42 . The outer side of the coil 52 is also provided with a coil 52 support whose cross-sectional shape is I-shaped.

The brake disc main body 62 includes a transmission part 621 which is sleeved on the motor shaft 2 and rotates with the motor shaft 2, and a friction part 622 located on the outer edge of the transmission part 621. The friction part 622 is in contact with the friction plate 61. The brake disc main body 62 also It includes a raised portion 623 against the throwing block 63 . The protrusions 623 are hingedly connected to the main body 62 of the brake disc, and the extension spring 64 is located between the two protrusions 623 to prevent the main body 62 of the brake disc from interfering with the extension spring 64 . The thickness of the transmission part 621 is larger than that of the friction part 622. During the contact process between the throwing block 63 and the brake shell 3, the torque generated is large and the direction is irregular. The transmission part 621 is socketed with the motor shaft 2 to ensure that the rotation position of the brake disc body 62 is stable. sex. The sensitivity of the lower door system can be changed by replacing the friction plate 61, and it can also deal with the serious wear of the friction plate 61 after long-term use. The friction plate 61 can be made of rubber material or fiber material, and is connected to the surface of the friction part 622 by gluing. In this embodiment, there are two throwing blocks 63, and the throwing block 63 includes a throwing block brake pad 631 close to the side of the brake housing 3, and the throwing block brake pad 631 includes an arc-shaped friction surface, and the friction surface is arranged toward the inner surface of the brake housing. .

A partition 32 is arranged inside the brake housing 3, and the partition 32 includes a protrusion located in the middle, and the sleeve 41 passes through the protrusion, and a flat plate is arranged between the protrusion and the inner side wall of the brake housing 3, and there is a flat plate on which the circuit passes through holes. A limit nut 411 is fixed on the sleeve 41, and the lower door lever 34 is sleeved on the sleeve 41 between the limit nut 411 and the partition 32, and the lower door lever 34 includes a sleeve portion 341 and a wrench passing through the partition 32 Section 342. Pull the lower door lever 34 to the side away from the motor housing 1, the lower door lever 34 rotates with the upper surface of the partition plate 32 as a fulcrum and squeezes the limit nut 411, so that the sleeve 41 drives the brake pad 42 to move. Lower door lever 34 ends are positioned at brake housing 3 outsides, are convenient to operate. The brake housing 3 can be a rectangular slat structure, one end is socketed with the sleeve 41, and the other end is provided with an opening. A crowbar etc. can be inserted through this opening, increasing the torque and facilitating operation on the ground. There is a gap between the socket portion 341 and the outer surface of the casing 41 , and the socket portion 341 abuts against the partition plate 32 and the stop nut 411 to increase the magnitude of the movement of the sleeve 41 driven by the lower door rod 34 .

A reset spring 44 is disposed between the sleeve 41 and the rear cover 31 , and a positioning clip 45 is disposed on the end of the sleeve 41 close to the reset spring 4443 . After the operation of lowering the door is completed, the load generated by the back-moving spring 44 here resets the lowering door lever 34, and cooperates with the spring 43 at the lower end of the sleeve pipe 41 to realize the stable reset of the sleeve pipe 41. The lower door lever 34 will generate a radial load on the sleeve 41, thereby causing friction between the sleeve 41 and the positioning shaft 4. The load generated by the spring 43 at the lower end of the sleeve 41 may not be able to function, and the lower door lever 34 cannot be reset. Will cause the sleeve to be stuck, and the additional return spring 44 ensures the stability of the structure.

A connector 7 is provided between the sleeve 41 and the brake pad 42 . The connector 7 includes a bottom plate 71 and a pipe wall 72 . The sleeve 41 passes through the bottom plate 71 and is fixed to the bottom plate 71 .

The above description is only an explanation of the present invention, so that those of ordinary skill in the art can implement the scheme completely, but it is not a limitation of the present invention. Those skilled in the art can make non-inventive changes to this embodiment as needed after reading this description. Contributed modifications, these are not creative modifications, but as long as they are within the scope of the claims of the present invention, they are all protected by the patent law.

Claims (9)

1. door system drops in a kind of motor of rolling shutter door manually, including motor casing（1）, the motor casing（1）It is interior to be equipped with driving rolling screen door The motor shaft of activity（2）, it is characterised in that：Further include brake shell（3）, locating shaft（4）And it is socketed in the locating shaft（4） On casing（41）, described sleeve pipe（41）Close to the brake shell（3）Openend is equipped with brake block（42）, the brake block（42） Close to described sleeve pipe（41）One side, which is equipped with, drives the brake block（42）The electromagnetic converting system of activity（5）, the brake block （42）Close to the brake shell（3）One side be open equipped with brake disc group（6）, the locating shaft（4）On be also socketed with spring（43）, The spring（43）With described sleeve pipe（41）Coaxial and described spring（43）One end and described sleeve pipe（41）It offsets；

The brake disc group（6）It is socketed in the motor shaft（2）On, the brake disc group（6）Including with the brake block （42）Parallel friction plate（61）With brake disc main body（62）, the brake disc main body（62）On be connected at least two and get rid of block （63）, it is adjacent described to get rid of block（63）Between be connected with tension spring（64）.

2. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：The brake shell（3） Including rear cover（31）And side plate（33）, the brake block（42）Including circular main part（421）And positioned at the main part （421）The protrusion of side（422）, the side plate（33）It is equipped with perforate, the protrusion（422）It is set through the perforate.

3. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：The electromagnetic conversion system System（5）Including iron core（51）With positioned at the iron core（51）Interior coil（52）, the coil（52）Axis and the brake block （42）Vertically.

4. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：The brake disc main body （62）Including being socketed in the motor shaft（2）On driving section（621）, positioned at the driving section（621）The friction portion of outer rim （622）, the friction portion（622）With the friction plate（61）Fitting contact, the brake disc main body（62）Further include with it is described Get rid of block（63）The lug boss to offset（623）.

5. door system drops in a kind of motor of rolling shutter door according to claim 4 manually, it is characterised in that：It is described to get rid of block（63）'s Quantity is two, described to get rid of block（63）Including close to the brake shell（3）Get rid of block brake block in one side（631）, it is described to get rid of block brake Vehicle piece（631）Including arcuate friction surface.

6. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：The brake shell（3） Inside it is provided with partition plate（32）, described sleeve pipe（41）On be fixed with stop nut（411）, the stop nut（411）With it is described every Plate（32）Between described sleeve pipe（41）On be socketed with drop door rod（34）, the drop door rod（34）Including socket part（341）And Through the partition plate（32）Wrench portion（342）.

7. door system drops in a kind of motor of rolling shutter door according to claim 6 manually, it is characterised in that：The socket part （341）With described sleeve pipe（41）Gap, the socket part are provided between outer surface（341）With the partition plate（32）With it is described Stop nut（411）It offsets.

8. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：Described sleeve pipe（41）With The rear cover（31）Between be provided with resetting spring（44）, described sleeve pipe（41）The upper close resetting spring（44）One end is equipped with Positioning jump ring（45）.

9. door system drops in a kind of motor of rolling shutter door according to claim 1 manually, it is characterised in that：Described sleeve pipe（41）With The brake block（42）Between be provided with connector（7）, the connector（7）Including bottom plate（71）With tube wall（72）, the set Pipe（41）Through the bottom plate（71）And with the bottom plate（71）It is fixed, the tube wall（72）With the brake block（42）It is fixed to connect It connects.