HK1215292B - Direction switchable assembly for a roller door operator - Google Patents

Description

Direction setting assembly for door rolling machine

Technical Field

The present invention relates to a direction control device, and more particularly, to a direction setting assembly for a door roller that prevents a manual mechanism of the door roller from being erroneously mounted.

Background

Generally, a door roller used in, for example, a vertically ascending and descending electric door roller needs to be driven by electric power to ascend or descend, and when power is cut off or power is interrupted due to a disaster or the door roller fails, the door roller is difficult to open or close smoothly; of course, in order to avoid the situation that the electric rolling door is not operated due to power failure or malfunction of the rolling door, the rolling door is basically provided with a manual operation mechanism, such as a transmission mechanism using a hand-pulling chain to drive the rolling door, so as to drive the rolling door to ascend or descend manually.

The electric rolling door at least comprises a brake device for braking the rolling door machine to keep the rolling door sheets at a specific position or a static position; in a conventional braking device, for example, during the process of opening or closing the door by starting the door roller, the electromagnet retracts the brake disc pushed by the spring, so that the brake disc is separated from the brake pad on the brake assembly to release the braking state of the rotating shaft of the door roller.

Further, for example, the applicant's approved U.S. patent publication No. US6,055,885 discloses a manually operated mechanism zipper disk which is also a clutch mechanism, and is integrated therewith; when the electric motor is powered on, the zipper disk is retracted by the electromagnet to release the driving shaft, when the electric motor is not powered on, the zipper disk is pushed against the brake disk under the bias of the spring, and the chain of the zipper disk is held on the shell of the door rolling machine by the holding device, so that the door rolling machine is kept in a braking state. Therefore, when the power is interrupted, the rolling door can still be rotated in a mode of the hand zipper strip, and the clutch is not required to be switched at all.

Further, as disclosed in U.S. patent 6,092,582, in its manual mode of operation, the fixing device must be disengaged first, such that the chain is pulled to drive the zipper plate, and the brake release device is released to rotate the shaft of the door roller.

The known manual zip-fastener disc mechanism is after all used in case of power failure, and the use chance is little or even spare. However, it can be understood that the chain hanging downwards in the known manual zipper disk mechanism is not easy to store when not used normally, which not only affects the appearance, but also is easy to be operated by children. Therefore, there is still a room for improvement in how to achieve a mechanism that is simple in operation, simple in structure, and free from additional cost increase, and can drive the rolling door to ascend or descend manually when power is interrupted or the rolling door machine fails.

Disclosure of Invention

The present invention provides a direction setting assembly for a door roller, which is capable of being installed in any direction during installation of the door roller without special calibration by a pair of direction control devices installed on opposite sides of the door roller housing in the radial direction, thereby preventing the manual mechanism of the door roller from being installed incorrectly.

Another object of the present invention is to provide a direction setting assembly for a door roller, which can be operated correctly only by releasing the locking of the direction control device on the free side after the door roller is installed in any direction.

It is still another object of the present invention to provide a direction setting assembly for a door roller that can be opened via a manual door opening mechanism without any switching and without power failure.

To achieve the above and other objects, a direction setting assembly for a door roller according to the present invention comprises: a speed reduction mechanism including an output shaft; a motor having a driving shaft, one end of which is coupled to the output shaft and the other end of which includes a brake disc; the clutch mechanism is arranged along the periphery of a rotating shaft and comprises a brake baffle, an elastic component, an electromagnet and a groove seat, wherein the brake baffle is fixedly connected to one end of the rotating shaft in an axially movable manner, and a plurality of ratchets are arranged on the periphery of the brake baffle; the elastic component penetrates through the rotating shaft and pushes the brake baffle to abut against the brake disc of the motor driving shaft; the electromagnet is accommodated in the groove seat and can retract into the brake baffle, the groove seat is provided with a central shaft hole which freely penetrates through the other end of the rotating shaft, and the groove seat is fixedly connected to the shell; the control circuit is electrically connected to the motor and the electromagnet; and a handle fixedly connected to the other end of the rotating shaft.

The device comprises a pair of first direction control devices and second direction control devices, wherein the first direction control devices and the second direction control devices are respectively arranged on the opposite sides of the radial direction of the rolling door machine shell, and each direction control device comprises a base and a sliding pin; the base comprises a through groove and is fixedly connected to the shell, one end of the sliding pin penetrates through the through groove of the base, and the other end of the sliding pin comprises a clamping key which is meshed with at least one ratchet of the plurality of ratchets of the brake baffle.

In addition, the door roller has a first installation direction and a second installation direction, and the door roller defines a limiting side facing the roller axle box and a free side far away from the roller axle box in the first installation direction; the door roller defines a constrained side facing the roller box and a free side facing away from the roller box in a second installation direction.

And each control device further comprises a spring pin which is arranged at the tail end of the sliding pin in a penetrating mode along the vertical direction, and an elastic component is arranged outside the sliding pin in a penetrating mode and between the spring pin and a clamping key, so that the clamping key is biased by the elastic component. The top surface of the base comprises a groove, when the spring pin is accommodated in the groove, the clamping key extends out of the through groove of the base, and the end part of the clamping key is provided with a one-way bevel opening to become a ratchet for clamping the brake baffle in a one-way manner; and when the spring pin is clamped on the top surface of the base, the clamping key retracts into the through groove to release the clamping of the brake baffle.

Preferably, the first direction control device is correspondingly arranged at the free side of the first installation direction of the door roller, and the second direction control device is correspondingly arranged at the free side of the second installation direction of the door roller.

Preferably, the hand-operated game machine further comprises a brake release lever, wherein one end of the brake release lever is provided with a multiple crank arm, the other end of the brake release lever is a free end, and the center of the crank arm comprises a shaft hole which is arranged on the outer side of the rotating shaft in a penetrating manner and is arranged between the groove seat and the hand game lever; under the condition of power failure, the brake baffle can be retracted manually by applying force to the free end of the brake release lever so as to release the brake, and the door can be closed by the weight of the door sheet.

Therefore, the door rolling machine can be installed in any direction during installation, the direction does not need to be specially corrected, the clamping of the direction control device on the free side of the door rolling machine can be released after the door rolling machine is installed, and the door can be opened through the manual mechanism under the condition of power failure; thus, the manual mechanism of the door rolling machine can be prevented from being installed wrongly under the condition of not increasing the cost additionally.

Drawings

FIG. 1 is a perspective view of a door roller incorporating the direction setting assembly of the present invention in an exploded view;

FIG. 2 is a perspective view of a clutch mechanism having a direction setting assembly according to the present invention in an exploded state, with other mechanisms omitted;

FIG. 2a is a schematic partial cross-sectional view showing the clutch mechanism of FIG. 2 in an assembled state;

FIG. 3 is a side view showing the rollup door operator installed in a first installation orientation;

FIG. 3a is a cross-sectional view taken along line 3a-3a of FIG. 3, showing the brake rotor in a bi-directional detent position;

FIG. 3b is a schematic view showing the door roller of FIG. 3 with the first directional control device on the free side of the first installation direction disengaged;

FIG. 4 is a side view showing the rollup door operator installed in a second installation orientation;

FIG. 4a is a cross-sectional view taken along line 4a-4a of FIG. 4, showing the brake rotor in a bi-directional detent position;

FIG. 4b is a schematic view showing the door roller of FIG. 4 with the second directional control device on the free side of the second installation direction disengaged.

Detailed Description

First, a preferred embodiment of a rolling door machine having the direction setting assembly of the present invention will be described with reference to fig. 1, 2 and 2 a. As shown in the drawings, the door roller 1 mainly includes: a speed reduction mechanism 2, a motor 3, a clutch mechanism 4, the motor 3 having a drive shaft 31 outputting a rotational drive force, one end of which is connected to the speed reduction mechanism 2 and the other end of which contains a brake disc 32; the reduction mechanism 2 reduces the rotational driving force of the drive shaft 31 via a plurality of gear sets, and outputs the reduced rotational driving force to an output shaft 21, the output shaft 21 normally being interlocked with a rolling bar (not shown) of a reel case to raise (open) the door by winding the door or lower (close) the door by unwinding the door; the clutch mechanism 4 is disposed along the outer periphery of the rotating shaft 41, and is connected to the other end of the motor 3 on the same side as the brake disc 32.

The clutch mechanism 4 comprises a brake baffle 43, an elastic component 45, an electromagnet 47 and a groove seat 49; the brake rotor 43 is axially movably fixed to one end of the rotary shaft 41, the brake rotor 43 has an end surface on which a brake pad 432 is provided to face the brake disc 32, and a plurality of ratchet teeth 431 are provided on the outer circumference of the brake rotor 43. The elastic component 45 is disposed on the rotating shaft 41 to press the brake pad 43 against the brake disc 32 for braking the driving shaft 31 of the motor 3 when the motor 3 is not energized. The electromagnet 47 is housed in the housing 49 and retracts the brake pad 43 to release the drive shaft 31 when the motor 3 is energized; the socket 49 is opened with a central shaft hole 491 freely passing through the other end of the rotating shaft 41, and the socket 49 is fixed to the housing 1 a.

At least a direction control device 5 is provided, which comprises a base 51 and a sliding pin 52, wherein the base 51 is fixed to the housing 1a and comprises a through groove 511 which penetrates the housing 1 a; one end of the sliding pin 52 is inserted into the through slot 511 of the base 51, and the other end thereof includes a locking key 521, which is engaged with at least one ratchet 431 of the plurality of ratchet 431 of the brake pad 43 to unidirectionally lock the brake pad 43. And a control circuit electrically connected to the motor 3 and the electromagnet 47, and including a handle 6 fixed to the other end of the rotating shaft 41. In addition, a brake release lever 46 is further included, one end of which is provided with a multiple crank arm, the other end of which is a free end, the center of the crank arm includes a shaft hole, which is arranged outside the rotating shaft 41 and between the groove seat 49 and the handle 6.

In a normal operation mode, controlled by the control circuit, when the electric motor 3 is energized, the electromagnet 47 is simultaneously energized to retract the brake rotor 43 away from the brake disc 32 to release the drive shaft 31; when the motor 3 is not energized, the brake rotor 43 is biased by the resilient member 45 against the brake disc 32, and the brake disc 32 of the drive shaft 31 is frictionally braked by the brake pad 432. Once in the event of a power failure, the brake slide 43 can be manually retracted by applying force via the free end of the brake release lever 46 to release the brake, dropping the door closed by the weight of the door leaf; and the brake baffle 43 can be rotated by the handle 6 to drive the driving shaft 31 to further link the rolling strip of the rolling shaft box so as to lift the rolling door leaf.

Since a general rolling door machine is not limited to a fixed direction when it is installed, a preferable position is selected according to various design conditions such as the installation position of the door leaves and the location, for example, the left position of the roller case is installed in parallel with the roller bar or the right position of the roller case. However, in the braking mode of the above-mentioned one-way braking damper, the direction control device basically needs to adjust the correct braking direction in accordance with the installation position of the door roller, which may cause the braking failure if the direction is selected incorrectly, and the manual door opening mechanism may not operate normally.

Referring to fig. 3-3 b and 4-4 b, it is preferable that a pair of first and second direction control devices 5 and 5' are respectively installed at opposite sides of the housing 1a of the door roller 1 in a radial direction according to the present invention. Depending on the relative positions of the door roller 1 and the roller box C, the door roller 1 has a first mounting direction LS (as shown in fig. 3) and a second mounting direction RS (as shown in fig. 4), in which the first mounting direction LS defines a limiting side facing the roller box C and a free side away from the roller box C; the door roller 1 defines a limit side facing the roller box C and a free side away from the roller box C in the second installation direction RS.

Wherein, the first direction control device 5 is correspondingly arranged at the free side of the first installation direction LS of the door roller 1; the second direction control device 5' is correspondingly arranged on the free side of the second installation direction RS of the door roller 1. The direction control device 5, 5' further includes a spring pin 53 vertically penetrating the end of the slide pin 52; the elastic component 54 is disposed outside the sliding pin 52 and between the spring pin 53 and the latch key 521, so that the latch key 521 has an elastic force.

The top surface of the base 51 comprises a groove 512, when the spring pin 53 is accommodated in the groove 512, the latch key 521 passes through the through groove 511, i.e. protrudes into the housing 1a, and the end of the latch key 521 is provided with a one-way bevel opening to form a ratchet for one-way latching the brake baffle 43; alternatively, when the spring pin 53 is engaged with the top surface of the base 51, the catch key 521 retracts into the through-groove 511, thereby releasing the catch of the brake pad 43.

When the door roller 1 is installed for the first time, the latch 521 of one direction control device 5' is latched in the forward rotation direction of the brake lining 43, and the latch 521 of the other direction control device 5 is latched in the reverse rotation direction of the brake lining 43, so as to form a two-way latching state (as shown in fig. 3a and 4 a). Therefore, the rolling door machine 1 can be installed in any direction during installation, no special correction is needed, and the rolling door machine 1 can be correctly operated only by releasing the clamping of the direction control device 5 (5') on the free side after installation.

Specifically, when the door roller 1 is released from the free side direction control device 5 in the first installation direction LS, the brake flap 43 can be rotated via the handle 6 under the condition of power failure, and further the output shaft 21 of the door roller 1 is driven to rotate to open the door (as shown in fig. 3 b); alternatively, when the second installation direction RS of the door roller 1 is released from the free side direction control device 5', the brake flap 43 can be rotated via the handle 6 under the condition of power failure, and further the output shaft 21 of the door roller 1 is driven to rotate to open the door (as shown in fig. 4 b). In this way, erroneous installation of the door roller can be prevented without additional cost increase.

While the invention has been described with reference to a preferred embodiment, it is not intended to be limited to the details shown in the drawings and described in the specification, and various changes and modifications can be made therein by one skilled in the art without departing from the scope of the invention.

Description of the symbols

1 Rolling door machine

1a outer casing

2 speed reducing mechanism

21 output shaft

3 electric motor

31 drive shaft

32 brake disc

4 Clutch mechanism

41 rotating shaft

43 brake baffle

431 ratchet

432 brake pad

45 elastic assembly

46 brake release lever

47 electromagnet

49 groove seat

491 axle hole

5. 5' direction control device

51 base

511 penetration groove

512 groove

52 sliding pin

521 catch key

53 spring pin

54 spring assembly

6 handle

C reel box

D door sheet

LS first mounting direction

RS second mounting direction.

Claims (9)

1. A direction setting assembly for a door roller, the door roller comprising:

a speed reduction mechanism including an output shaft;

a motor having a driving shaft, one end of which is coupled to the output shaft and the other end of which includes a brake disc;

the clutch mechanism is arranged along the periphery of the rotating shaft and comprises a brake baffle, an elastic component, an electromagnet and a groove seat, the brake baffle is fixedly connected to one end of the rotating shaft in an axially movable manner, and a plurality of ratchets are arranged on the periphery of the brake baffle; the elastic component penetrates through the rotating shaft and pushes the brake baffle to abut against a brake disc of the motor driving shaft; the electromagnet is accommodated in the groove seat and can retract the brake baffle, the groove seat is provided with a central shaft hole and freely penetrates through the other end of the rotating shaft, and the groove seat is fixedly connected to the shell;

a control circuit electrically connected to the motor and the electromagnet; wherein still include:

the first direction control device and the second direction control device are respectively arranged on the radial opposite sides of the shell of the rolling door, each of the first direction control device and the second direction control device comprises a base and a sliding pin, the base comprises a through groove and is fixedly connected to the shell, one end of the sliding pin is arranged in the through groove of the base in a penetrating mode, and the other end of the sliding pin comprises a clamping key and is meshed with at least one ratchet tooth of the plurality of ratchet teeth of the braking baffle.

2. A direction setting assembly for a rollup door machine according to claim 1 wherein the rollup door machine has a first installation direction and a second installation direction, the rollup door machine defining a constrained side facing the roller axle housing and a free side away from the roller axle housing in the first installation direction; the rollup door machine defines a constrained side facing the roller box and a free side away from the roller box in a second installation direction.

3. A direction setting assembly for a rollup door machine according to claim 2 wherein the first direction control means is disposed on a free side of the rollup door machine in a first installation direction; the second direction control device is correspondingly arranged at the free side of the second installation direction of the door roller.

4. A direction setting assembly for a rollup door as claimed in claim 1 further comprising a handle secured to the other end of the rotating shaft.

5. A direction setting assembly for a door roller as claimed in claim 4, further comprising a brake release lever having a multi-turn arm at one end and a free end at the other end, the crank arm having a central shaft hole passing through the outside of the rotating shaft and between the housing and the handle.

6. A direction setting assembly for a rollup door as claimed in claim 5, wherein each of the first and second direction control devices further comprises: the spring pin penetrates through the tail end of the sliding pin along the vertical direction; the elastic component penetrates through the outer side of the sliding pin and is arranged between the spring pin and the clamping key, so that the clamping key is biased by the elastic component.

7. The direction setting assembly for a door roller according to claim 6, wherein the base includes a groove on a top surface thereof, the latching key extends out of the through groove of the base when the spring pin is received in the groove, and a one-way inclined opening is formed at an end of the latching key to engage the ratchet of the braking stop in one direction; and when the spring pin is clamped on the top surface of the base, the clamping key retracts into the through groove to release the clamping of the brake baffle.

8. A direction setting assembly for a door roller as claimed in claim 7, wherein when the first installation direction of the door roller is released from the latch of the first direction control device on the free side, the brake blind can be rotated by the handle to further rotate the output shaft of the door roller to open the door.

9. A direction setting assembly for a door roller as claimed in claim 7, wherein when the second installation direction of the door roller is released from the latch of the second direction control device on the free side, the handle can rotate the brake blind to further rotate the output shaft of the door roller to open the door.