A fireproof tubular motor

Abstract

The present invention relates to a fireproof tubular motor, which includes a housing, a conversion mechanism rotatably arranged inside the housing and used for converting electrical energy into mechanical energy, a braking mechanism arranged between the conversion mechanism and the housing and used for restricting the rotation of the conversion mechanism, a control mechanism arranged outside the housing and used for manually controlling the opening and closing of the braking mechanism, and a fireproof mechanism arranged outside the housing and used for forcing the control mechanism to open the braking mechanism when the temperature rises; the braking mechanism includes a first friction assembly arranged on the housing, a second friction assembly movably arranged on the conversion mechanism, a first elastic member arranged on the conversion mechanism and used for forcing the second friction assembly to abut against the first friction assembly, and a first driving assembly arranged on the conversion mechanism and used for driving the second friction assembly to disengage from the first friction assembly when powered on. The present invention solves the problems that the existing tubular motor cannot be manually released from braking, there are potential safety hazards, and it is difficult to meet the fireproof use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a fireproof tubular motor. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. Based on Faraday's law of electromagnetic induction, it uses the force acting on a current-carrying coil in a magnetic field to generate rotational motion, thereby outputting power. It has the characteristics of good controllability, efficient conversion of electrical energy, and compatibility with clean energy, and is an indispensable power source. Motors are widely used in equipment in modern industries, household appliances, transportation and other fields. Among them, an electric rolling shutter door is an automated door product driven by a motor, which is widely used in places such as shops, warehouses, factories, etc., and has the characteristics of convenient operation, high safety, and space saving.

[0003] The patent document with the patent number CN111585381A discloses a fireproof motor for a high-temperature smoke environment, including a motor main body, a mounting seat, a junction box, a protective cover, and a protection structure. Through the mounting seat and the protective cover provided by the present invention, the junction box of the motor has a good fireproof function and the effect of isolating high temperature, so that the motor is not damaged in a high-temperature environment or a fire, and can still operate normally, ensuring the normal operation of the motor. Moreover, the installation of the protective cover is very convenient and simple, and its later disassembly and replacement are very convenient, bringing convenience to the staff. Through the provided protection structure, the connection part between the motor junction box and the cable has a good protection effect, so that it is not interfered by high temperature and fire, is not damaged, and ensures its normal connection, thereby providing guarantee for the normal operation of the motor.

[0004] However, in the actual use process, the inventor found that some tubular motors on the market currently cannot lift and lower the rolling shutter door in a power-off state and do not have the function of manually operating to release the brake. Especially in the sudden power-off situation caused by a fire or the like, it is not only difficult to manually operate the rolling shutter door to open, but also cannot ensure the safe evacuation of personnel in the sudden situation, there are safety hazards. Moreover, the rolling shutter door cannot automatically descend to isolate the fire source, and it is difficult to meet the fireproof use requirements of the rolling shutter door. Summary of the Invention

[0005] The object of the present invention is to address the deficiencies of the prior art. By providing a first drive assembly, a control mechanism, and a fire protection mechanism to drive the separation between the first friction assembly and the second friction assembly respectively under the conditions of power-on, power-off, and fire, thereby releasing the restriction on the conversion mechanism, enabling the rolling door to move up and down. At the same time, a first elastic member is used to force the first friction assembly and the second friction assembly to automatically close, realizing the restriction on the conversion mechanism, and further restricting the movement of the rolling door. Thus, the problem that the existing tubular motor cannot manually release the brake, has potential safety hazards, and is difficult to meet the fire protection use requirements is solved.

[0006] For the above technical problems, the following technical solution is adopted: A fireproof tubular motor, comprising:

[0007] A housing, a conversion mechanism rotatably disposed within the housing and used for converting electrical energy into mechanical energy, a braking mechanism disposed between the conversion mechanism and the housing and used for restricting the rotation of the conversion mechanism, a control mechanism disposed outside the housing and used for manually controlling the opening and closing of the braking mechanism, and a fire protection mechanism disposed outside the housing and used for forcing the control mechanism to open the braking mechanism when the temperature rises;

[0008] The braking mechanism includes a first friction assembly disposed on the housing, a second friction assembly movably disposed on the conversion mechanism, a first elastic member disposed on the conversion mechanism and used for forcing the second friction assembly to abut against the first friction assembly, and a first drive assembly disposed on the conversion mechanism and used for driving the second friction assembly to disengage from the first friction assembly when powered on.

[0009] Preferably, the control mechanism includes a through hole formed in the conversion mechanism and penetrating to the outside of the housing, a waist-shaped hole formed through the inner wall of the through hole, a control rod disposed on the second friction assembly and extending to the outside of the housing through the waist-shaped hole and the through hole, a handle rotatably disposed on the outer wall of the housing, a pushing member disposed on the handle and used for pushing the second friction assembly to move along with the control rod as the handle rotates, and a locking assembly disposed on the housing and used for restricting the rotation of the handle.

[0010] Preferably, the fire protection mechanism includes a second drive assembly and a temperature control assembly disposed within the housing. When the ambient temperature rises, after the temperature control assembly forces the pushing member to push the control rod, the second drive assembly drives the conversion mechanism to rotate along with the control rod.

[0011] Preferably, the second drive assembly includes a power generation motor movably disposed within the housing and connected to the control rod, a storage battery electrically connected to the power generation motor, and a control button disposed within the housing and used for controlling the charging and discharging of the storage battery.

[0012] Preferably, the temperature control assembly includes an installation cavity formed in the outer shell, two pistons respectively slidably disposed on both sides of the installation cavity, a gas generator disposed in the installation cavity, a mechanical thermometer disposed in the installation cavity and with a sensing end extending to the outside of the outer shell, and a trigger rod movably disposed on the mechanical thermometer. When the temperature rises, the mechanical thermometer forces the trigger rod to move until the gas generator is triggered, and a large amount of gas is generated in the installation cavity to force the two pistons to move outward to respectively push the handle and the control button.

[0013] Preferably, the locking assembly includes an installation groove formed on the outer wall of the outer shell, a locking ball slidably disposed in the installation groove, a second elastic member disposed in the installation groove and used to force the locking ball to move towards the outside of the outer shell, and two locking grooves spaced apart on the handle. When the pushing member rotates with the handle and is squeezed or separated from the control rod, the locking grooves respectively cooperate with the two locking grooves to lock the handle in the squeezed or separated state.

[0014] Preferably, the first friction assembly includes a first mounting seat formed on the outer shell, a first friction plate disposed on the first mounting seat, and a plurality of heat dissipation grooves spaced apart on the first friction plate.

[0015] Preferably, the second friction assembly includes a second mounting seat movably disposed on the conversion mechanism and a plurality of second friction plates movably and spacedly disposed on the second mounting seat. Adjacent two of the second friction plates form a group, and a group of the second friction plates are opened and closed on the second mounting seat. When multiple groups of the second friction plates are opened to frictionally reduce the speed with the first friction plate, multiple groups of the second friction plates are closed to be connected to the heat dissipation grooves.

[0016] Preferably, the first driving assembly includes a plurality of positioning grooves spaced apart and penetrating through the second mounting seat, a plurality of positioning pins disposed on the conversion mechanism and respectively slidably connected to the respective positioning grooves, a pushing inclined surface formed on the positioning pin and used to force a group of the second friction plates to open, a third elastic member disposed on the second mounting seat and used to force a group of the second friction plates to close, and an electromagnet disposed on the conversion mechanism and used to attract the second mounting seat away from the first mounting seat.

[0017] Preferably, the conversion mechanism includes a stator arranged on the inner wall of the outer shell, outer winding grooves formed at equal intervals on the inner wall of the stator, a rotor rotatably arranged inside the stator and with its ends extending to the outside of the outer shell, a plurality of inner winding grooves arranged at equal intervals on the outer wall of the rotor, and two bearings arranged at both ends of the outer shell and used to position the two ends of the rotor respectively.

[0018] Beneficial effects of the present invention:

[0019] (1) The present invention provides a first drive assembly, a control mechanism, and a fire prevention mechanism to drive the first friction assembly and the second friction assembly to separate in the case of power, power failure, and fire, respectively. This allows the brake to be manually released in an emergency without power, removing the restriction on the conversion mechanism, and allowing the rolling shutter door to be manually operated to move up and down, thereby reducing safety hazards. In particular, in the case of a fire without power, the brake can be automatically released according to the temperature, removing the restriction on the conversion mechanism, allowing the rolling shutter door to move downward and close under the action of gravity, isolating the fire area, meeting the fire prevention requirements, and further reducing safety hazards. At the same time, the first elastic member is used to force the first friction assembly and the second friction assembly to automatically close, thereby restricting the conversion mechanism and further restricting the movement of the rolling shutter door, avoiding manual fixation, and facilitating the passage and use of the rolling shutter door.

[0020] (2) In the present invention, a handle is provided to cooperate with a pusher to realize manual control of the second friction component to move with the control rod, thereby realizing manual release of the brake, and the handle is restricted to the brake release state or the brake state in cooperation with the locking component, thereby improving the stability of the device and being easy to use. At the same time, a mechanical thermometer is provided to cooperate with the trigger rod, and when the temperature rises, the gas generator is triggered to generate a large amount of gas in the installation cavity, thereby forcing the two pistons to move and push the handle and the control button respectively. After the handle is turned to the brake release state, the control button can control the battery to discharge, and then the generator motor is used to realize the drive conversion mechanism to rotate with the control rod, thereby realizing the automatic closing of the rolling shutter door in the event of a fire;

[0021] (3) In the present invention, the first mounting seat and the second mounting seat are provided to respectively mount the first friction plate and the second friction plate, thereby realizing the friction deceleration function. In combination with the heat dissipation groove and each set of second friction plates that can be opened and closed, the heat dissipation effect can be improved, thereby avoiding excessive temperature after repeated use, which affects the use of the fire prevention mechanism. At the same time, the pushing slope and the third elastic member are used to control the automatic opening and closing of a set of second friction plates during the process of the electromagnet cooperating with the first elastic member to force the movement of the second mounting seat, thereby respectively realizing the friction deceleration between the first friction plate and the second friction plate and realizing the connection locking function between the second friction plate and the connecting groove, thereby improving the stability of the restriction and avoiding easy release of the brake.

[0022] In summary, the fireproof tubular motor has the effects of being able to manually release the brake, having no safety hazards, and meeting the fireproof use requirements, and is particularly suitable for the field of motor technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a fireproof tubular motor provided by the present invention.

[0025] Figure 2 It is a three-dimensional sectional view of a fireproof tubular motor provided by the present invention.

[0026] Figure 3 It is an exploded view of a fireproof tubular motor provided by the present invention.

[0027] Figure 4 It is a top view of a fireproof tubular motor provided by the present invention.

[0028] Figure 5 Provided by the present invention Figure 4 The sectional view along A.

[0029] Figures 6 - 7 It is a trigger process diagram of the fireproof mechanism provided by the present invention.

[0030] Figure 8 It is a schematic structural diagram of the second friction assembly provided by the present invention.

[0031] Figure 9 Provided by the present invention Figure 4 The sectional view along B.

[0032] Figures 10 - 12 It is a braking process diagram of the braking mechanism provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings.

[0034] Embodiment 1

[0035] As Figures 1 - 3 shown, a fireproof tubular motor includes:

[0036] A housing 1, a conversion mechanism 2 rotatably disposed within the housing 1 and used for converting electrical energy into mechanical energy, a braking mechanism 3 disposed between the conversion mechanism 2 and the housing 1 and used for restricting the rotation of the conversion mechanism 2, a control mechanism 4 disposed outside the housing 1 and used for manually controlling the opening and closing of the braking mechanism 3, and a fire protection mechanism 5 disposed outside the housing 1 and used for forcing the control mechanism 4 to open the braking mechanism 3 when the temperature rises;

[0037] The braking mechanism 3 includes a first friction assembly 31 disposed on the housing 1, a second friction assembly 32 movably disposed on the conversion mechanism 2, a first elastic member 33 disposed on the conversion mechanism 2 and used for forcing the second friction assembly 32 to abut against the first friction assembly 31, and a first driving assembly 34 disposed on the conversion mechanism 2 and used for driving the second friction assembly 32 to disengage from the first friction assembly 31 when energized.

[0038] In this embodiment, by providing the first driving assembly 34, the control mechanism 4, and the fire protection mechanism 5 to drive the separation between the first friction assembly 31 and the second friction assembly 32 respectively in the case of power-on, power-off, and fire, thereby releasing the restriction on the conversion mechanism 2, so that the rolling door can move up and down after different operations in different situations. At the same time, the first elastic member 33 is supplemented to force the first friction assembly 31 and the second friction assembly 32 to automatically close, realizing the restriction on the conversion mechanism 2, thereby restricting the movement of the rolling door and avoiding manual fixation.

[0039] Specifically, in use, according to different use environments, the first driving assembly 34, manually operating the control mechanism 4, and the fire protection mechanism 5 drive the separation between the first friction assembly 31 and the second friction assembly 32. The first elastic member 33 deforms, and the conversion mechanism 2 can rotate, and the rolling door can move up and down. When the driving of the first friction assembly 31 is released, the first elastic member 33 recovers its deformation and forces the second friction assembly 32 to abut against the first friction assembly 31 to restrict the rotation of the conversion mechanism 2, thereby restricting the movement of the rolling door.

[0040] It should be noted that the housing 1 includes a housing body 11 and two first covers 12. The two first covers 12 are respectively detachably installed at the open ends of the housing body 11, so that both ends of the housing 1 can be opened, facilitating the installation and replacement of the internal structure.

[0041] Further, as Figures 2 - 5As shown, the control mechanism 4 includes a through hole 41 formed in the conversion mechanism 2 and penetrating to the outside of the housing 1, a waist-shaped hole 42 penetrating and formed on the inner wall of the through hole 41, a control rod 43 disposed on the second friction assembly 32 and extending to the outside of the housing 1 through the waist-shaped hole 42 and the through hole 41, a handle 44 rotatably disposed on the outer wall of the housing 1, a pushing member 45 disposed on the handle 44 and used to push the second friction assembly 32 to move along with the control rod 43 when the handle 44 rotates, and a locking assembly 46 disposed on the housing 1 and used to limit the rotation of the handle 44.

[0042] In this embodiment, by setting the handle 44 and the pushing member 45 in cooperation, the second friction assembly 32 is manually controlled to move along with the control rod 43, so as to manually release the brake, and the locking assembly 46 is used to properly limit the handle 44 in the brake release state or the brake state, improving the stability of the device and being convenient to use.

[0043] Specifically, when the handle 44 is manually rotated to make the pushing member 45 push the second friction assembly 32 to move along with the control rod 43 until the locking assembly 46 limits the handle 44 in the brake release state, the manual release of the brake is completed. When the handle 44 is manually rotated in the reverse direction to separate the pushing member 45 from the control rod 43, the manual braking is completed, and the locking assembly 46 limits the handle 44 in the brake state.

[0044] It should be noted that the number of the waist-shaped holes 42 is two, and the control rod 43 is connected to the second friction assembly 32 through the two waist-shaped holes 42, improving the connection stability and the stability of the pushing member 45 to push the second friction assembly 32 to move. In addition, the specific structure of the pushing member 45 is not limited in this application, and the pushing member 45 can be a cam structure to realize the extrusion or separation between the pushing member 45 and the control rod 43 when the handle 44 rotates.

[0045] Furthermore, as Figures 2 - 5 shown, the fire prevention mechanism 5 includes a second driving assembly 51 and a temperature control assembly 52 disposed in the housing 1. When the ambient temperature rises, after the temperature control assembly 52 forces the pushing member 45 to push the control rod 43, the second driving assembly 51 drives the conversion mechanism 2 to rotate along with the control rod 43.

[0046] In this embodiment, by setting the second driving assembly 51 and the temperature control assembly 52 in cooperation, the brake is automatically released in case of a fire, and a rotational force is provided through the control rod 43 to force the rolling shutter door to move downward, thereby quickly and accurately isolating the fire source and preventing the rolling shutter door from being unable to move under the action of gravity due to jamming.

[0047] Furthermore, as Figures 3 - 5As shown, the second driving component 51 includes a power generation motor 511 movably arranged in the housing 1 and connected to the control rod 43, a storage battery 512 electrically connected to the power generation motor 511, and a control button 513 arranged in the housing 1 and controlling the charging and discharging of the storage battery 512.

[0048] In this embodiment, by setting the power generation motor 511 to be connected to the control rod 43, power generation can be achieved when the electric control rolling shutter door moves up and down, and the power is stored through the storage battery 512. When a fire causes a power outage, the control button 513 can control the storage battery 512 to discharge and drive the power generation motor, thereby driving the conversion mechanism 2 to rotate along with the control rod 43, so as to provide a rotational force to force the rolling shutter door to move downward.

[0049] It should be noted that the power generation motor, the storage battery, and the control button themselves and their installation methods are all prior arts, and will not be elaborated in detail here.

[0050] Furthermore, as Figures 3 - 7 shown, the temperature control component 52 includes an installation cavity 521 formed in the housing 1, two pistons 522 respectively slidably arranged on both sides of the installation cavity 521, a gas generator 523 arranged in the installation cavity 521, a mechanical thermometer 524 arranged in the installation cavity 521 and with its sensing end extending to the outside of the housing 1, and a trigger rod 525 movably arranged on the mechanical thermometer 524. When the temperature rises, the mechanical thermometer 524 forces the trigger rod 525 to move until the gas generator 523 is triggered, and then a large amount of gas is generated in the installation cavity 521 to force the two pistons 522 to move outward and respectively push the handle 44 and the control button 513.

[0051] In this embodiment, by setting the mechanical thermometer 524 to cooperate with the trigger rod 525, when the temperature rises, the gas generator 523 is triggered to generate a large amount of gas in the installation cavity 521, thereby forcing the two pistons 522 to move and respectively push the handle 44 and the control button 513, so as to realize that after the handle 44 is rotated to the release braking state, the control button 513 can control the storage battery 512 to discharge, and then drive the conversion mechanism 2 to rotate along with the control rod 43 through the power generation motor 511.

[0052] It should be noted that the housing 1 further includes a second cover body 13. The second cover body 13 is detachably arranged on the housing body 11 and forms a chamber for installing the temperature control component 52 with the first cover body 12, which is convenient for replacing the temperature control component 52 after triggering; in addition, the gas generator 523 and the mechanical thermometer 524 themselves and their installation methods are all prior arts, and will not be elaborated in detail here.

[0053] Furthermore, as Figures 3 - 7As shown, the locking assembly 46 includes a mounting groove 461 formed on the outer wall of the housing 1, a locking ball 462 slidably disposed in the mounting groove 461, a second elastic member 463 disposed in the mounting groove 461 and used to force the locking ball 462 to move towards the outside of the housing 1, and two locking grooves 464 formed on the handle 44 at intervals. When the pushing member 45 rotates with the handle 44 and squeezes or separates from the control rod 43, the two locking grooves 464 respectively cooperate to lock the handle 44 in the squeezed or separated state.

[0054] In this embodiment, by setting the second elastic member 463 to force the locking ball 462 to automatically connect to the locking groove 464, the handle 44 is locked in the squeezed or separated state, that is, the handle 44 is restricted in the release braking state or the braking state.

[0055] Specifically, during use, when the handle 44 rotates to cause the pushing member 45 to squeeze the control rod 43 to move for release braking, the second elastic member 463 forces the locking ball 462 to connect to one of the locking grooves 464, locking the handle 44 in the release braking state. When the handle 44 rotates in the reverse direction, the locking ball 462 disengages from one of the locking grooves 464, and the second elastic member 463 is compressed until the pushing member 45 separates from the control rod 43 for braking, and then the second elastic member 463 forces the locking ball 462 to connect to the other locking groove 464, locking the handle 44 in the braking state.

[0056] It should be noted that the handle 44 has a D-shaped structure. The straight side of the handle 44 is rotatably connected to the housing 1. The straight side facilitates the setting of the pushing member 45 and the locking grooves 464, and the curved side of the handle 44 is convenient for manual operation. In addition, the number of the locking assemblies 46 is preferably two to improve the locking stability.

[0057] Further, as Figure 3 shown, the first friction assembly 31 includes a first mounting seat 311 formed on the housing 1, a first friction plate 312 disposed on the first mounting seat 311, and a plurality of heat dissipation grooves 313 formed on the first friction plate 312 at intervals.

[0058] In this embodiment, by setting the first mounting seat 311 to mount the first friction plate 312 with the heat dissipation grooves 313, the friction function is realized while improving the heat dissipation effect, avoiding the temperature being too high after repeated use and affecting the use of the fire prevention mechanism 5.

[0059] Further, as Figure 8As shown in the figure, the second friction assembly 32 includes a second mounting seat 321 movably arranged on the conversion mechanism 2 and a plurality of second friction plates 322 movably and spacedly arranged on the second mounting seat 321. Adjacent two second friction plates 322 form a group, and a group of second friction plates 322 are arranged on the second mounting seat 321 in an opening and closing manner. When multiple groups of second friction plates 322 are opened to frictionally reduce the speed with the first friction plate 312, multiple groups of second friction plates 322 are closed and connected to the heat dissipation grooves 313.

[0060] In this embodiment, by arranging the second mounting seat 321 to mount the second friction plates 322, each group of movable second friction plates 322 can be opened and closed. When a group of opened second friction plates 322 realize the friction function, the heat dissipation effect is improved, preventing the temperature from being too high after repeated use and affecting the use of the fire prevention mechanism 5. At the same time, a group of closed second friction plates 322 are connected in the heat dissipation grooves 313, improving the stability of the restriction and preventing the braking from being easily released.

[0061] It should be noted that braking conical surfaces 314 are provided on the outer ring surface of the first mounting seat 311 and the inner ring surface of the second mounting seat 321 and cooperate with each other. Correspondingly, the first friction plate 312 and the second friction plates 322 are respectively arranged on the braking conical surfaces 314 on the first mounting seat 311 and the second mounting seat 321. Under the guiding action of the braking conical surfaces 314, the first friction plate 312 and the second friction plates 322 are better matched, and the braking effect is good.

[0062] Further, as Figures 3 - 5 and Figures 8 - 12 shown in the figure, the first driving assembly 34 includes a plurality of positioning grooves 341 formed at intervals and penetrating through the second mounting seat 321, a plurality of positioning pins 342 arranged on the conversion mechanism 2 and respectively slidably connected to the respective positioning grooves 341, a pushing inclined surface 343 formed on the positioning pins 342 and used to force a group of second friction plates 322 to open, a third elastic member 344 arranged on the second mounting seat 321 and used to force a group of second friction plates 322 to close, and an electromagnet 345 arranged on the conversion mechanism 2 and used to attract the second mounting seat 321 away from the first mounting seat 311.

[0063] In this embodiment, by arranging the electromagnet 345 to cooperate with the positioning pins 342 and the positioning grooves 341, the positioning movement of the second mounting seat 321 is realized. At the same time, with the assistance of the pushing inclined surface 343 and the third elastic member 344, the automatic opening and closing of a group of second friction plates 322 are controlled during the movement of the second mounting seat 321, realizing the functions of friction speed reduction and connection locking respectively.

[0064] Specifically, during use, first, the electromagnet 345 is energized to attract the second mounting seat 321 away from the first mounting seat 311 to release the braking. The inclined plane 343 is pushed to automatically open a set of second friction plates 322 (refer to Figure 8 as shown). Then, the conversion mechanism 2 can rotate to drive the rolling shutter up and down. Then, the electromagnet 345 is de-energized, and the first elastic member 33 forces the second mounting seat 321 to move towards the first mounting seat 311. Friction is generated between each opened second friction plate 322 and the first friction plate 312 to decelerate the conversion mechanism 2. Under the action of the frictional force and the inertial force of the conversion mechanism 2, each set of second friction plates 322 opens and squeezes the third elastic member 344 to deform (refer to Figures 9 - 11 as shown). Finally, after the rotational speed of the conversion mechanism 2 decreases, the inertial force decreases, and the third elastic member 344 restores its deformation to force a set of second friction plates 322 to close. Then, under the action of gravity, the rolling shutter moves a small distance until each closed second friction plate 322 is respectively connected in each heat dissipation groove 313 (refer to Figures 9 - 10 and Figure 12 as shown).

[0065] It should be noted that the first elastic member 33, the second elastic member 463, and the third elastic member 344 can be spiral springs, leaf springs, etc. Their structures and installation methods are all prior arts and will not be elaborated here in detail.

[0066] Furthermore, as Figures 1 - 3 shown, the conversion mechanism 2 includes a stator 21 provided on the inner wall of the housing 1, outer winding grooves 22 formed at equal intervals on the inner wall of the stator 21, a rotor 23 rotatably provided inside the stator 21 with its end extending outside the housing 1, a plurality of inner winding grooves 24 provided at equal intervals on the outer wall of the rotor 23, and two bearings 25 provided at both ends of the housing 1 and respectively used to position both ends of the rotor 23.

[0067] In this embodiment, by arranging the stator 21 and generating electromagnetic induction when the wires in the outer winding grooves 22 and the inner winding grooves 24 are energized, the rotor 23 can stably rotate under the positioning action of the bearings 25, realizing the conversion of electrical energy into stable mechanical energy.

[0068] It should be noted that the through hole 41 is formed on the axis of the rotor 23, which is convenient for the installation of the device and ensures high stability when driving the second friction assembly 32 to move and rotate through the control rod 43.

[0069] Working process:

[0070] When powered on and in use, the first driving assembly 34 drives the first friction assembly 31 to separate from the second friction assembly 32, and the first elastic member 33 is compressed. After the conversion mechanism 2 converts electrical energy into mechanical energy to drive the rolling door to move up and down and then powers off, the first elastic member 33 resumes deformation, forcing the second friction assembly 32 to abut against the first friction assembly 31 to restrict the rotation of the conversion mechanism 2, thereby restricting the movement of the rolling door.

[0071] When manually operated, the manual operation control mechanism 4 controls the first friction assembly 31 to separate from the second friction assembly 32, and the first elastic member 33 is compressed. After the rolling door can be manually moved up and down, the manual operation control mechanism 4 separates from the first friction assembly 31, and the first elastic member 33 resumes deformation, forcing the second friction assembly 32 to abut against the first friction assembly 31 to restrict the rotation of the conversion mechanism 2, thereby restricting the movement of the rolling door.

[0072] When a fire occurs, as the ambient temperature rises to a certain value (in this application, this temperature value is set to 80 degrees), the fire prevention mechanism 5 forces the control mechanism 4 to control the first friction assembly 31 to separate from the second friction assembly 32, and the rolling door can move downward under the action of gravity to close.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention.

[0074] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" cannot be understood as a limitation on the number.

[0075] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art under the technical disclosure of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A fireproof tubular motor, characterized in that, Comprising: A housing (1), a conversion mechanism (2) rotatably arranged inside the housing (1) and used for converting electrical energy into mechanical energy, a braking mechanism (3) arranged between the conversion mechanism (2) and the housing (1) and used for restricting the rotation of the conversion mechanism (2), a control mechanism (4) arranged outside the housing (1) and used for manually controlling the opening and closing of the braking mechanism (3), and a fire prevention mechanism (5) arranged outside the housing (1) and used for forcing the control mechanism (4) to open the braking mechanism (3) when the temperature rises; The braking mechanism (3) includes a first friction assembly (31) arranged on the housing (1), a second friction assembly (32) movably arranged on the conversion mechanism (2), a first elastic member (33) arranged on the conversion mechanism (2) and used for forcing the second friction assembly (32) to abut against the first friction assembly (31), and a first driving assembly (34) arranged on the conversion mechanism (2) and used for driving the second friction assembly (32) to disengage from the first friction assembly (31) when powered on; The control mechanism (4) includes a through hole (41) formed inside the conversion mechanism (2) and penetrating to the outside of the housing (1), a waist-shaped hole (42) penetratingly formed on the inner wall of the through hole (41), a control rod (43) arranged on the second friction assembly (32) and extending to the outside of the housing (1) through the waist-shaped hole (42) and the through hole (41), a handle (44) rotatably arranged on the outer wall of the housing (1), a pushing member (45) arranged on the handle (44) and used for pushing the second friction assembly (32) to move along with the control rod (43) when the handle (44) rotates, and a locking assembly (46) arranged on the housing (1) and used for restricting the rotation of the handle (44); The fire prevention mechanism (5) includes a second driving assembly (51) and a temperature control component (52) arranged inside the housing (1). When the ambient temperature rises, after the temperature control component (52) forces the pushing member (45) to push the control rod (43), the second driving assembly (51) drives the conversion mechanism (2) to rotate along with the control rod (43).

2. The fireproof tubular motor according to claim 1, characterized in that, The second driving assembly (51) includes a power generation motor (511) movably arranged inside the housing (1) and connected to the control rod (43), a storage battery (512) electrically connected to the power generation motor (511), and a control button (513) arranged inside the housing (1) and used for controlling the charging and discharging of the storage battery (512).

3. The fireproof tubular motor according to claim 2, wherein The temperature control component (52) includes an installation cavity (521) formed inside the housing (1), two pistons (522) respectively slidably arranged on both sides of the installation cavity (521), a gas generator (523) arranged inside the installation cavity (521), a mechanical thermometer (524) arranged inside the installation cavity (521) and with its sensing end extending outside the housing (1), and a trigger rod (525) movably arranged on the mechanical thermometer (524). When the temperature rises, the mechanical thermometer (524) forces the trigger rod (525) to move until the gas generator (523) is triggered. Then, a large amount of gas is generated inside the installation cavity (521) to force the two pistons (522) to move outwards to respectively push the handle (44) and the control button (513).

4. A fireproof tubular motor according to claim 1, characterized in that, The locking component (46) includes an installation groove (461) formed on the outer wall of the housing (1), a locking ball (462) slidably arranged inside the installation groove (461), a second elastic member (463) arranged inside the installation groove (461) and used to force the locking ball (462) to move towards the outside of the housing (1), and two locking grooves (464) spaced apart and formed on the handle (44). When the pushing member (45) rotates with the handle (44) and is squeezed or separated from the control rod (43), the locking grooves (464) respectively cooperate with the two locking grooves (464) to lock the handle (44) in the squeezed or separated state.

5. A fireproof tubular motor according to claim 1, characterized in that, The first friction component (31) includes a first mounting seat (311) formed on the housing (1), a first friction plate (312) arranged on the first mounting seat (311), and a plurality of heat dissipation grooves (313) spaced apart and formed on the first friction plate (312).

6. A fireproof tubular motor according to claim 5, characterized in that, The second friction component (32) includes a second mounting seat (321) movably arranged on the conversion mechanism (2) and a plurality of second friction plates (322) movably and spacedly arranged on the second mounting seat (321). Adjacent two of the second friction plates (322) form a group, and a group of the second friction plates (322) is arranged to open and close on the second mounting seat (321). When multiple groups of the second friction plates (322) are opened to reduce the speed by friction with the first friction plate (312), multiple groups of the second friction plates (322) are closed to be connected to the heat dissipation grooves (313).

7. A fireproof tubular motor according to claim 6, wherein, The first driving component (34) includes a plurality of positioning grooves (341) formed at intervals and penetrating through the second mounting seat (321), a plurality of positioning pins (342) arranged on the conversion mechanism (2) and respectively slidably connected to the positioning grooves (341), a pushing inclined surface (343) formed on the positioning pins (342) and used to force a group of the second friction plates (322) to open, a third elastic member (344) arranged on the second mounting seat (321) and used to force a group of the second friction plates (322) to close, and an electromagnet (345) arranged on the conversion mechanism (2) and used to attract the second mounting seat (321) away from the first mounting seat (311).

8. A fireproof tubular motor according to claim 1, characterized in that, The conversion mechanism (2) includes a stator (21) arranged on the inner wall of the housing (1), outer winding grooves (22) formed at equal intervals on the inner wall of the stator (21), a rotor (23) rotatably arranged inside the stator (21) and with its end extending outside the housing (1), a plurality of inner winding grooves (24) arranged at equal intervals on the outer wall of the rotor (23), and two bearings (25) arranged at both ends of the housing (1) and respectively used to position both ends of the rotor (23).

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