Fireproof tubular motor

Abstract

The invention relates to a fireproof tubular motor. Comprising a shell, a conversion mechanism rotationally arranged in the shell and used for converting electric energy into mechanical energy, and a braking mechanism arranged between the conversion mechanism and the shell and used for limiting rotation of the conversion mechanism. The control mechanism is arranged outside the shell and used for manually controlling opening and closing of the brake mechanism; the fireproof mechanism is arranged outside the shell and used for forcing the control mechanism to open the brake mechanism when the temperature rises; the braking mechanism comprises a first friction assembly arranged on the shell and a second friction assembly movably arranged on the switching mechanism. The first elastic piece is arranged on the switching mechanism and used for forcing the second friction assembly to abut against the first friction assembly; and the first driving assembly is arranged on the switching mechanism and used for driving the second friction assembly to be separated from the first friction assembly when powered on. The problems that an existing tubular motor cannot be manually released and braked, potential safety hazards exist, and the fireproof use requirement is difficult to meet are solved.

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 at present 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 case of a sudden power-off 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 event of an emergency, there are safety hazards, and the rolling shutter door cannot automatically descend to isolate the fire source, making it 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 under the conditions of power supply, power failure, and fire respectively, thereby releasing the restriction on the conversion mechanism, enabling the rolling shutter 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 shutter 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 solutions are adopted: A fireproof tubular motor, comprising: A housing, a conversion mechanism rotatably provided within the housing and used for converting electrical energy into mechanical energy, a braking mechanism provided between the conversion mechanism and the housing and used for restricting the rotation of the conversion mechanism, a control mechanism provided outside the housing and used for manually controlling the opening and closing of the braking mechanism, and a fire protection mechanism provided 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 provided on the housing, a second friction assembly movably provided on the conversion mechanism, a first elastic member provided on the conversion mechanism and used for forcing the second friction assembly to abut against the first friction assembly, and a first drive assembly provided on the conversion mechanism and used for driving the second friction assembly to disengage from the first friction assembly when powered on.

[0007] Preferably, the control mechanism includes a through hole formed in the conversion mechanism and extending to the outside of the housing, a waist-shaped hole formed through the inner wall of the through hole, a control rod provided on the first friction assembly and extending to the outside of the housing through the waist-shaped hole and the through hole, a handle rotatably provided on the outer wall of the housing, a pushing member provided on the handle and used for pushing the first friction assembly to move along with the control rod when the handle rotates, and a locking assembly provided on the housing and used for restricting the rotation of the handle.

[0008] Preferably, the fire protection mechanism includes a second drive assembly and a temperature control assembly provided 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.

[0009] Preferably, the second drive assembly includes a power generation motor movably provided within the housing and connected to the control rod, a storage battery electrically connected to the power generation motor, and a control button provided within the housing and used for controlling the charging and discharging of the storage battery.

[0010] Preferably, the temperature control assembly includes a mounting cavity formed within the outer casing, two pistons slidably disposed on both sides of the mounting cavity respectively, a gas generator disposed within the mounting cavity, a mechanical thermometer disposed within the mounting cavity with its sensing end extending outside the outer casing, 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. After that, a large amount of gas is generated within the mounting cavity, forcing the two pistons to move outwards and respectively push the handle and the control button.

[0011] Preferably, the locking assembly includes a mounting groove formed on the outer wall of the outer casing, a locking ball slidably disposed within the mounting groove, a second elastic member disposed within the mounting groove and used to force the locking ball to move towards the outside of the outer casing, and two locking grooves formed on the handle at intervals. When the pushing member rotates with the handle and squeezes or separates from the control rod, the locking grooves respectively cooperate with the two locking grooves to lock the handle in the squeezing or separating state.

[0012] Preferably, the first friction assembly includes a first mounting seat formed on the outer casing, a first friction plate disposed on the first mounting seat, and a plurality of heat dissipation grooves formed on the first friction plate at intervals.

[0013] 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 is 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 and connected to the heat dissipation grooves.

[0014] Preferably, the first driving assembly includes a plurality of positioning grooves formed at intervals 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.

[0015] Preferably, the conversion mechanism includes a stator disposed on the inner wall of the outer casing, outer winding grooves formed on the inner wall of the stator at equal intervals, a rotor rotatably disposed inside the stator with its end extending outside the outer casing, a plurality of inner winding grooves disposed on the outer wall of the rotor at equal intervals, and two bearings disposed at both ends of the outer casing and respectively used to position both ends of the rotor.

[0016] Beneficial effects of the present invention: (1) In the present invention, the first drive assembly, the control mechanism and the fire prevention mechanism are arranged to drive the first friction assembly and the second friction assembly to separate in the case of power, power failure and fire, respectively, so that the brake can be manually released in an emergency without power, and the restriction on the conversion mechanism is released, so that the rolling door can be manually operated to move up and down, reducing safety hazards. In particular, when there is no power during a fire, the brake can be automatically released according to the temperature, and the restriction on the conversion mechanism is released, so that the rolling door moves downward and closes 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 forces the first friction assembly and the second friction assembly to automatically close, realizing the restriction on the conversion mechanism, thereby restricting the movement of the rolling door, avoiding manual fixation, and facilitating the passage and use of the rolling door; (2) In the present invention, the handle is provided to cooperate with the pusher to realize manual control of the first friction component to move with the control rod, thereby realizing manual brake release, and the handle is limited 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, so that 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; (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, so as to realize the friction deceleration function. In combination with the heat dissipation groove and each group of second friction plates that can be opened and closed, the heat dissipation effect can be improved, so as to avoid excessive temperature after repeated use, which affects the use of the fire prevention mechanism. At the same time, the pushing inclined surface and the third elastic member are used to control the automatic opening and closing of a group of second friction plates in 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 connection groove, thereby improving the stability of the restriction and avoiding easy release of the brake. In summary, the fireproof tubular motor has the effect of being able to manually release the brake, having no potential safety hazard, and meeting the fireproof use requirements, and is particularly suitable for the field of motor technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a fireproof tubular motor provided by the present invention.

[0019] Figure 2 It is a three-dimensional sectional view of a fireproof tubular motor provided by the present invention.

[0020] Figure 3 It is an exploded view of a fireproof tubular motor provided by the present invention.

[0021] Figure 4 It is a top view of a fireproof tubular motor provided by the present invention.

[0022] Figure 5 Provided by the present invention Figure 4 The sectional view along the A position.

[0023] Figures 6 - 7 It is a triggering process diagram of the fireproof mechanism provided by the present invention.

[0024] Figure 8 It is a schematic structural diagram of the second friction assembly provided by the present invention.

[0025] Figure 9 Provided by the present invention Figure 4 The sectional view along the B position.

[0026] Figures 10 - 12 It is a braking process diagram of the braking mechanism provided by the present invention. Specific Embodiments

[0027] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings.

[0028] Embodiment 1 As Figures 1 - 3 shown, a fireproof tubular motor includes: A housing 1, a conversion mechanism 2 rotatably disposed in 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 fireproof 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; The braking mechanism 3 includes a first friction assembly 31 disposed on the outer shell 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 to force 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 to drive the second friction assembly 32 to disengage from the first friction assembly 31 when powered on.

[0029] In this embodiment, by setting the first driving assembly 34, the control mechanism 4, and the fire prevention mechanism 5 to drive the separation between the first friction assembly 31 and the second friction assembly 32 in the case of power-on, power-off, and fire respectively, the restriction on the conversion mechanism 2 is released, so that the rolling shutter door can move up and down after different operations in different situations. At the same time, the first elastic member 33 is assisted to force the first friction assembly 31 and the second friction assembly 32 to automatically close, realizing the restriction on the conversion mechanism 2, and further restricting the rolling shutter door from moving, avoiding manual fixation.

[0030] Specifically, in use, according to different use environments, the first driving assembly 34, the manual operation control mechanism 4, and the fire prevention mechanism 5 are used to drive the separation between the first friction assembly 31 and the second friction assembly 32. The first elastic member 33 deforms, the conversion mechanism 2 can rotate, and the rolling shutter 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 rolling shutter door from moving.

[0031] It should be noted that the outer shell 1 includes a housing 11 and two first covers 12. The two first covers 12 are respectively detachably installed at the open ends of the housing 11, so that both ends of the outer shell 1 can be opened, facilitating the installation and replacement of the internal structure.

[0032] Further, as Figures 2 - 5 shown, the control mechanism 4 includes a through hole 41 formed in the conversion mechanism 2 and penetrating to the outside of the outer shell 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 first friction assembly 31 and extending to the outside of the outer shell 1 through the waist-shaped hole 42 and the through hole 41, a handle 44 rotatably disposed on the outer wall of the outer shell 1, a pushing member 45 disposed on the handle 44 and used to push the first friction assembly 31 to move along with the control rod 43 when the handle 44 rotates, and a locking assembly 46 disposed on the outer shell 1 and used to restrict the rotation of the handle 44.

[0033] In this embodiment, by setting the handle 44 in cooperation with the pushing member 45, manual control is realized to make the first friction assembly 31 move along with the control rod 43, realizing manual release of braking. The locking assembly 46 is assisted to properly restrict the handle 44 in the released braking state or the braking state, improving the stability of the device and being convenient to use.

[0034] Specifically, when the handle 44 is manually rotated to make the pusher 45 push the first friction assembly 31 to move along with the control rod 43 until the locking assembly 46 restricts the handle 44 in the brake release state, the manual brake release is completed. When the handle 44 is manually rotated in the reverse direction to separate the pusher 45 from the first friction assembly 31, the manual braking is completed, and the locking assembly 46 restricts the handle 44 in the braking state.

[0035] It should be noted that the number of kidney-shaped holes 42 is two, and the control rod 43 is connected to the first friction assembly 31 through the two kidney-shaped holes 42, which improves the connection stability and the stability of the pusher 45 to push the first friction assembly 31 to move. In addition, the specific structure of the pusher 45 is not limited in this application, and the pusher 45 can be a cam structure to achieve extrusion or separation between the handle 44 and the control rod 43 when the handle 44 rotates.

[0036] Further, as Figures 2 - 5 shown, the fire prevention mechanism 5 includes a second drive 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 pusher 45 to push the control rod 43, the second drive assembly 51 drives the conversion mechanism 2 to rotate along with the control rod 43.

[0037] In this embodiment, by setting the second drive assembly 51 to cooperate with the temperature control assembly 52, the brake is automatically released in case of a fire, and the control rod 43 provides a rotational force 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.

[0038] Further, as Figures 3 - 5 shown, the second drive assembly 51 includes a power generation motor 511 movably disposed 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 disposed in the housing 1 and controlling the charge and discharge of the storage battery 512.

[0039] 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 rolling shutter door is moved up and down by electric control and stored in 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, and providing a rotational force to force the rolling shutter door to move downward.

[0040] 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.

[0041] Further, as Figures 3 - 7As shown in the figure, the temperature control component 52 includes an installation cavity 521 formed in the housing 1, two pistons 522 slidably arranged on both sides of the installation cavity 521 respectively, 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 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 in the installation cavity 521 to force the two pistons 522 to move outward and push the handle 44 and the control button 513 respectively.

[0042] In this embodiment, by arranging the mechanical thermometer 524 in cooperation 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 push the handle 44 and the control button 513 respectively. After the handle 44 is rotated to the release braking state, the control button 513 can control the battery 512 to discharge, and then the drive conversion mechanism 2 is driven to rotate with the control rod 43 through the power generation motor 511.

[0043] 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 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 it is triggered. 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.

[0044] Furthermore, as Figures 3 - 7 shown, the locking component 46 includes an installation groove 461 formed on the outer wall of the housing 1, a locking ball 462 slidably arranged in the installation groove 461, a second elastic member 463 arranged in the installation groove 461 and used to force the locking ball 462 to move outward from the housing 1, and two locking grooves 464 spaced apart 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 cooperate with the two locking grooves 464 respectively to lock the handle 44 in the squeezed or separated state.

[0045] In this embodiment, by arranging the second elastic member 463 to force the locking ball 462 to be automatically connected 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.

[0046] Specifically, during use, when the handle 44 is rotated so that the pushing member 45 presses against the control rod 43 to move and release the brake, the second elastic member 463 forces the locking ball 462 to be connected within a locking groove 464, locking the handle 44 in the released brake state. When the handle 44 is rotated in the reverse direction, the locking ball 462 disengages from a locking groove 464, and the second elastic member 463 is compressed until the pushing member 45 separates from the control rod 43 to effect braking. Then, the second elastic member 463 forces the locking ball 462 to be connected within another locking groove 464, locking the handle 44 in the braking state.

[0047] 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 arrangement of the pushing member 45 and the locking groove 464, and the curved side of the handle 44 is convenient for manual operation. Additionally, the number of locking assemblies 46 is preferably two to improve the locking stability.

[0048] Furthermore, 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 spaced apart from each other on the first friction plate 312.

[0049] In this embodiment, by arranging the first mounting seat 311 to mount the first friction plate 312 with heat dissipation grooves 313, while realizing the friction function, the heat dissipation effect is improved, avoiding overheating after repeated use and affecting the use of the fire prevention mechanism 5.

[0050] Furthermore, as Figure 8 shown, the second friction assembly 32 includes a second mounting seat 321 movably disposed on the conversion mechanism 2 and a plurality of second friction plates 322 movably and spaced apart on the second mounting seat 321. Adjacent two second friction plates 322 form a group, and a group of second friction plates 322 is arranged to open and close on the second mounting seat 321. 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.

[0051] In this embodiment, by arranging the second mounting seat 321 to mount the second friction plates 322, each moving group of second friction plates 322 can be opened and closed. When a group of opened second friction plates 322 realizes the friction function, the heat dissipation effect is improved, avoiding overheating after repeated use and affecting the use of the fire prevention mechanism 5. At the same time, when a group of closed second friction plates 322 is connected within the heat dissipation grooves 313, the stability of the restriction is improved, avoiding easy release of the brake.

[0052] It should be noted that braking conical surfaces 314 that cooperate with each other are provided on the outer circumferential surface of the first mounting seat 311 and the inner circumferential surface of the second mounting seat 321. Correspondingly, the first friction plate 312 and the second friction plate 322 are respectively arranged on the braking conical surfaces 314 of 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 plate 322 are better matched, and the braking effect is good.

[0053] Furthermore, as Figures 3 - 5 and Figures 8 - 12 shown, the first driving assembly 34 includes a plurality of positioning grooves 341 that are spaced apart and formed through the second mounting seat 321, a plurality of positioning pins 342 that are arranged on the conversion mechanism 2 and are 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.

[0054] In this embodiment, by arranging the electromagnet 345 in cooperation with the positioning pins 342 and the positioning grooves 341, the positioning movement of the second mounting seat 321 is controlled. 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, respectively realizing the functions of friction speed reduction and connection locking.

[0055] 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, and the pushing inclined surface 343 pushes a group of second friction plates 322 to open automatically (refer to Figure 8 shown). Then, the conversion mechanism 2 can rotate to drive the rolling door to move up and down. Then, the electromagnet 345 is powered off, and the first elastic member 33 forces the second mounting seat 321 to move towards the first mounting seat 311. The opened second friction plates 322 of each group generate friction with the first friction plate 312 to reduce the speed of the conversion mechanism 2. Under the action of the frictional force and the inertial force of the conversion mechanism 2, each group of second friction plates 322 opens and squeezes the third elastic member 344 to deform (refer to Figures 9 - 11 shown). Finally, after the rotation speed of the conversion mechanism 2 decreases and the inertial force decreases, the third elastic member 344 restores its deformation to force a group of second friction plates 322 to close. Furthermore, the rolling door moves a small distance under the action of gravity until the closed second friction plates 322 of each group are respectively connected in the respective heat dissipation grooves 313 (refer to Figures 9 - 10 and Figure 12 shown).

[0056] It should be noted that the first elastic member 33, the second elastic member 463, and the third elastic member 344 can be helical springs, leaf springs, etc. Their structures and installation methods are prior arts and will not be elaborated here.

[0057] Furthermore, as Figures 1 - 3 shown, the conversion mechanism 2 includes a stator 21 disposed 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 disposed inside the stator 21 with its end extending outside the housing 1, a plurality of inner winding grooves 24 disposed at equal intervals on the outer wall of the rotor 23, and two bearings 25 disposed at both ends of the housing 1 and respectively used to position both ends of the rotor 23.

[0058] In this embodiment, by arranging the stator 21 and generating electromagnetic induction when the electric 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.

[0059] It should be noted that the through hole 41 is formed on the axis of the rotor 23, facilitating the installation of the device and ensuring high stability when the first friction assembly 31 is driven to move and rotate by the control rod 43.

[0060] Working process: When in use and powered on, the first driving assembly 34 drives the first friction assembly 31 to separate from the second friction assembly 32, compressing the first elastic member 33. The conversion mechanism 2 converts electrical energy into mechanical energy to drive the rolling shutter 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 limit the rotation of the conversion mechanism 2, thereby restricting the movement of the rolling shutter. When manually operated, the manual operation control mechanism 4 controls the first friction assembly 31 to separate from the second friction assembly 32, compressing the first elastic member 33. After manually operating the rolling shutter up and down, the manual operation control mechanism 4 separates from the first friction assembly 31. The first elastic member 33 resumes deformation, forcing the second friction assembly 32 to abut against the first friction assembly 31 to limit the rotation of the conversion mechanism 2, thereby restricting the movement of the rolling shutter. 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 shutter can move downward under the action of gravity to close.

[0061] 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. Therefore, it should not be construed as a limitation to the invention.

[0062] Of course, in this technical solution, those skilled in the art should understand that the term "a" 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 "a" should not be construed as a limitation on the quantity.

[0063] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions 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: include: A housing (1), a conversion mechanism (2) rotatably disposed in the housing (1) and used to convert electrical energy into mechanical energy, a braking mechanism (3) disposed between the conversion mechanism (2) and the housing (1) and used to limit the rotation of the conversion mechanism (2), a control mechanism (4) disposed outside the housing (1) and used to manually control the opening and closing of the braking mechanism (3), and a fire prevention mechanism (5) disposed outside the housing (1) and used to force the control mechanism (4) to open the braking mechanism (3) when the temperature rises; The braking mechanism (3) comprises a first friction component (31) arranged on the housing (1), a second friction component (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 component (32) to abut against the first friction component (31), and a first driving component (34) arranged on the conversion mechanism (2) and used for driving the second friction component (32) to disengage from the first friction component (31) when power is supplied.

2. A fireproof tubular motor according to claim 1, characterized in that: The control mechanism (4) comprises a through hole (41) formed in the conversion mechanism (2) and extending to the outside of the housing (1), a waist-shaped hole (42) formed through the inner wall of the through hole (41), a control rod (43) arranged on the first friction component (31) 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 to push the first friction component (31) to move with the control rod (43) as the handle (44) rotates, and a locking component (46) arranged on the housing (1) and used to limit the rotation of the handle (44).

3. A fireproof tubular motor according to claim 2, characterized in that: The fire protection mechanism (5) comprises a second drive component (51) and a temperature control component (52) arranged in the housing (1); when the ambient temperature rises, the temperature control component (52) forces the pusher (45) to push the control rod (43), and then the second drive component (51) drives the conversion mechanism (2) to rotate along with the control rod (43).

4. A fireproof tubular motor according to claim 3, characterized in that: The second driving component (51) comprises a generator motor (511) movably disposed in the housing (1) and connected to the control rod (43), a storage battery (512) electrically connected to the generator motor (511), and a control button (513) disposed in the housing (1) and controlling the charging and discharging of the storage battery (512).

5. A fireproof tubular motor according to claim 4, characterized in that: The temperature control component (52) comprises a mounting cavity (521) formed in the housing (1), two pistons (522) slidably disposed on both sides of the mounting cavity (521), a gas generator (523) disposed in the mounting cavity (521), a mechanical thermometer (524) disposed in the mounting cavity (521) and having a sensing end extending to the outside of the housing (1), and a trigger rod (525) movably disposed 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 a large amount of gas is generated in the mounting cavity (521), forcing the two pistons (522) to move outwards to push the handle (44) and the control button (513) respectively.

6. A fireproof tubular motor according to claim 2, characterized in that: The locking assembly (46) comprises 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 for forcing the locking ball (462) to move toward the outside of the housing (1), and two locking grooves (464) formed at intervals on the handle (44), and when the push member (45) rotates with the handle (44) to be 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 a squeezed or separated state.

7. A fireproof tubular motor according to claim 1, characterized in that: The first friction assembly (31) comprises 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 slots (313) formed at intervals on the first friction plate (312).

8. A fireproof tubular motor according to claim 7, characterized in that: The second friction assembly (32) comprises a second mounting seat (321) movably arranged on the conversion mechanism (2) and a plurality of second friction plates (322) movably and spaced apart on the second mounting seat (321), wherein two adjacent second friction plates (322) form a group, and a group of second friction plates (322) is openably arranged on the second mounting seat (321); when the plurality of groups of second friction plates (322) are opened to reduce the speed by friction with the first friction plate (312), the plurality of groups of second friction plates (322) are closed to connect with the heat dissipation slot (313).

9. A fireproof tubular motor according to claim 8, characterized in that: The first driving assembly (34) comprises a plurality of positioning grooves (341) formed at intervals and extending through the second mounting seat (321), a plurality of positioning pins (342) provided on the conversion mechanism (2) and respectively slidably connected to each of the 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) provided on the second mounting seat (321) and used to force a group of second friction plates (322) to close, and an electromagnet (345) provided on the conversion mechanism (2) and used to attract the second mounting seat (321) away from the first mounting seat (311).

10. A fireproof tubular motor according to claim 1, characterized in that: The conversion mechanism (2) comprises 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 to the outside of 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 used to position the two ends of the rotor (23).

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