CN215267824U

CN215267824U - Novel flat motor

Info

Publication number: CN215267824U
Application number: CN202121784825.9U
Authority: CN
Inventors: 黄有娟
Original assignee: Dongguan Ailide Technology Co ltd
Current assignee: Dongguan Ailide Technology Co ltd
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2021-12-21
Anticipated expiration: 2031-07-31

Abstract

The utility model provides a novel flat motor. The utility model provides a novel flat motor, which comprises a housin, the lid, stator module and rotor subassembly, the casing is connected with the lid and forms the cavity between the two, stator module and rotor subassembly hold in the cavity, stator module includes the magnet steel, the conducting wire way board and be used for conducting current's brush subassembly between conducting wire way board and rotor subassembly, the magnet steel bonds on the conducting wire way board is close to a side of rotor subassembly, the brush subassembly is installed in the circle of magnet steel, brush subassembly one end is connected with the conducting wire way board electricity, the other end is connected with the rotor subassembly electricity. The utility model discloses have annular conductive contact point in the bottom of motor to the appearance of whole motor is circular state, does not have protruding portions such as baffle and tray, makes flat motor can arbitrary angle installation, and installation space is saved to bigger degree.

Description

Novel flat motor

Technical Field

The utility model relates to a vibrating motor field, more specifically relates to a novel flat motor.

Background

Along with the increase of functions of the smart phone, people can not leave the smart phone more and more, the requirements for signals are higher and higher due to the enhancement of the functions of the smart phone, so that the number of mobile phone antennas is increased, the brushless motor adopts electronic commutation, electric sparks generated due to the commutation do not exist, the electronic interference is reduced, the antenna can fully play a role, and the direct current brushless motor is a trend for being used on the smart phone; in order to facilitate the use of consumers and continuously load various functions necessary for life in the smart phone market, hardware needs to be installed in a limited space, and the hardware needs to be miniaturized. The vibration motor plays a role in signal transmission on mobile communication terminals such as mobile phones, timers and the like, and is widely applied to the fields needing vibration, such as: in order to achieve the simulation effect of the game, the method is applied to a game machine; recently, the electronic products are adopted as a reminding function on earphones, electronic cigarettes and various wearing electronic instruments, and the electronic products are mainly miniaturized, low in power consumption and long in service life.

The common motors of the mobile phone in the current technical means are two types: the linear motor and the rotor motor have better vibration effect, but have higher manufacturing cost, and are generally used for high-end mobile phones. The rotor motor comprises a common rotor motor and a flat motor with better performance, although the shell of the existing flat motor is circular, a conducting strip for leading wires still protrudes, and some lower machine shells are also provided with fixing plates which can only be fixed in one direction during installation, so that the installation angle of the motor is limited; and most rotors are formed by traditional injection molding, which easily causes the problems of injection molding non-forming, rubber coating, burrs, bearing damage, coil broken line and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned background art the rotor motor includes ordinary rotor motor and the better flat motor of performance, though the shell is circular among the current flat motor, still has a conducting strip protrusion that is used for the lead wire, and some casings still have the fixed plate, can only fix a direction during the installation for the limited problem of angle of motor installation provides a novel flat motor. The utility model discloses need not the pin mode and connect, the motor can be installed by arbitrary angle.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a novel flat motor, includes casing, lid, stator module and rotor subassembly, the casing is connected with the lid and forms the cavity between the two, stator module and rotor subassembly hold in the cavity, stator module includes magnet steel, conductive line board and is used for conducting current's brush subassembly between conductive line board and the rotor subassembly, the magnet steel bonds conductive line board is close to on the side of rotor subassembly, the brush unit mount is in the circle of magnet steel, brush subassembly one end with conductive line board electricity is connected, the other end with the rotor subassembly electricity is connected.

Furthermore, the conductive circuit board is of a circular structure, a first conductive ring and a second conductive ring which are mutually spaced are arranged on the conductive circuit board, the electric brush assembly comprises a first electric brush and a second electric brush, one end of the first electric brush is electrically connected with the first conductive ring, the other end of the first electric brush is electrically connected with the rotor assembly, one end of the second electric brush is electrically connected with the second conductive ring, and the other end of the second electric brush is electrically connected with the rotor assembly.

Further, the first conductive ring and the second conductive ring are concentric rings with unequal radii.

Further, the rotor assembly comprises a rotor support, a first coil, a second coil, an eccentric vibrator and a rectifying PCB (printed circuit board), a rotor bearing is arranged at the center of the rotor support, a main shaft matched with the rotor bearing is arranged at the center of the inner wall of the shell, and the main shaft penetrates through the rotor bearing and is rotatably connected with the rotor bearing; the eccentric vibrator is connected to one side wall of the rotor support, and the first coil and the second coil are respectively connected to the side wall of the rotor support and are respectively positioned on two sides of the eccentric vibrator; the rectifier PCB is attached and connected to one side face, close to the electric brush assembly, of the rotor support; one side surface of the rectifying PCB is electrically connected with the first coil and the second coil respectively, and the other side surface of the rectifying PCB is electrically connected with the first electric brush and the second electric brush respectively.

Furthermore, an annular blade is fixedly connected to the outer wall of one end, close to the inner wall of the shell, of the main shaft.

Furthermore, a circular groove is formed in the center, close to one side face of the rectifier PCB, of the conductive circuit board, and one end, far away from the shell, of the main shaft is rotatably connected with the circular groove.

Further, still the cover is equipped with graphite alkene gasket on the main shaft, graphite alkene gasket is located annular blade with between rotor bearing's the terminal surface.

Furthermore, a plurality of reversing conducting strips which are uniformly distributed at intervals along the circumferential direction are arranged on one side surface of the rectifying PCB close to the electric brush assembly, and the first electric brush and the second electric brush are respectively connected with one reversing conducting strip.

Further, the magnetic steel is in a ring shape, the rectifier PCB is in a circular structure, and the outer diameter of the rectifier PCB is smaller than the inner diameter of the magnetic steel.

Preferably, the rotor support is made of a stainless steel material.

Compared with the prior art, the beneficial effects are:

1. the middle part of one end face of the motor in the utility model is the conductive circuit board, when the motor is connected with an external power supply, the conductive circuit board is used as an electrode contacted with the external power supply and is respectively connected with the positive and negative poles of the power supply; therefore, the bottom of the motor is provided with the annular conductive contact point, the whole motor is in a circular shape without protruding parts such as a baffle plate, a tray and the like, so that the flat motor can be installed at any angle, and the installation space is saved to a greater extent.

2. The main shaft of the utility model is arranged on the upper casing, and the end part of the main shaft is provided with the annular blade, which is helpful for assisting the fixing force and the verticality of the main shaft and the casing; adopt graphite alkene packing ring to replace traditional viscidity gasket, can effectively reduce the frictional force with the bearing, improve motor speed and reduce motor noise.

3. The outer diameter of the rectifier PCB is smaller than the inner diameter of the magnetic steel, so that the inner space of the motor can be greatly saved, no other object is blocked between the coil and the magnetic steel, the thickness of the rotor assembly can be maximized, the coil and the magnetic steel keep the optimal distance, the magnetic field and the electromagnetic field can be favorably exerted to the maximum, and the product performance can be favorably improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the present invention on one side of the brush assembly.

Fig. 3 is an exploded view of the present invention on one side of the conductive circuit board.

Fig. 4 is a schematic structural diagram of the rotor assembly of the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

as shown in fig. 1 to fig. 3, which are a novel flat motor, including a housing 10, a cover 40, a stator assembly 30 and a rotor assembly 20, the housing 10 is connected with the cover 40 and a cavity is formed between the housing and the cover, the stator assembly 30 and the rotor assembly 20 are accommodated in the cavity, the stator assembly 30 includes a magnetic steel 32, a conductive circuit board 31 and a brush assembly for conducting current between the conductive circuit board 31 and the rotor assembly 20, the magnetic steel 32 is bonded on a side surface of the conductive circuit board 31 close to the rotor assembly 20, the brush assembly is installed in a ring of the magnetic steel 32, one end of the brush assembly is electrically connected with the conductive circuit board 31, and the other end of the brush assembly is electrically connected with the rotor assembly 20.

In this embodiment, the conductive circuit board 31 is a circular structure, a first conductive ring 311 and a second conductive ring 312 which are spaced from each other are disposed on the conductive circuit board 31, and the first conductive ring 311 and the second conductive ring 312 are concentric rings with unequal radii; the brush assembly includes a first brush 33 and a second brush 34, the first brush 33 having one end electrically connected to the first conductive ring 311 and the other end electrically connected to the rotor assembly 20, and the second brush 34 having one end electrically connected to the second conductive ring 312 and the other end electrically connected to the rotor assembly 20. The cover body 40 is of an annular structure, the cover body 40 is matched with the shell 10 in an annular buckling mode, an electric brush PCB assembly and the cover body 40 can be effectively wrapped together, and the cover body 40 are subjected to laser welding, so that the space can be effectively saved; after the cover 40 is fastened to the casing 10, the middle of one end surface of the motor is the conductive circuit board 31, and when the motor is connected to an external power supply, the first conductive ring 311 and the second conductive ring 312 on the conductive circuit board 31 are used as electrodes contacting with the external power supply, one is connected to the positive pole of the power supply, and the other is connected to the negative pole of the power supply. Therefore, the bottom of the motor is provided with the annular conductive contact point, the whole motor is in a circular shape, and the motor can be installed at any angle without protruding parts such as baffles, trays and the like, so that the installation space is saved.

As shown in fig. 2 to 4, the rotor assembly 20 includes a rotor holder 21, a first coil 24, a second coil 25, an eccentric vibrator 23, and a rectifying PCB board 26; the rotor bracket 21 is made of stainless steel materials, the middle of the rotor bracket is hollow, a rotor bearing 22 is arranged at the center of the rotor bracket 21, a main shaft 50 matched with the rotor bearing 22 is arranged at the center 11 of the inner wall of the shell 10, and the main shaft 50 penetrates through the rotor bearing 22 and is rotatably connected with the rotor bearing 22; the eccentric vibrator 23 is connected to one sidewall of the rotor frame 21, and the first coil 24 and the second coil 25 are respectively connected to the sidewall of the rotor frame 21 and located at both sides of the eccentric vibrator 23; the rectifier PCB 26 is attached to one side surface of the rotor bracket 21 close to the brush assembly; one side surface of the rectifying PCB 26 is electrically connected to the first and

second coils

24 and 25, respectively, and the other side surface is electrically connected to the first and second brushes 33 and 34, respectively. The whole rotor assembly 20 is molded in a non-injection molding mode, and the rotor assembly is simple in process, easy to operate, low in cost and high in yield. The rotor support 21 is made of stainless steel materials and is connected with the vibrator 23 through laser welding, circular through holes are formed in the upper end of the support 21 and the lower end of the vibrator 23, the assembly process is fast in positioning, and the accurate position and the non-deviation are achieved; the center of the rotor support 21 is provided with a stretching step, and the bearing 22 is accommodated in the stretching step in an interference manner, so that the operation is more convenient than the operation in the traditional injection molding mode, the pull-out force is larger, and the concentricity is better; and the lower extreme of the rotor bearing 22 does not have any step, the lower extreme of the rotor bearing 22 is the unsettled state when the motor runs, do not contact any object, the rotor assembly 20 can descend freely to the greatest extent, the frictional force of the rotor assembly 20 that reduces greatly promotes the motor rotational speed, can not produce the friction noise moreover.

An annular blade 51 is fixedly connected to the outer wall of one end of the main shaft 50 close to the inner wall of the shell 10; the main shaft 50 is further sleeved with a graphene gasket 52, and the graphene gasket 52 is located between the annular blade 51 and the end face of the rotor bearing 22. Thus, the main shaft 50 is arranged on the upper machine shell, and the end part of the main shaft 50 is provided with an annular blade 51 which is helpful for assisting the fixing force and the verticality of the main shaft 50 and the shell 10; the graphene gasket is adopted to replace the traditional sticky gasket 52, so that the friction force between the graphene gasket and the bearing 22 can be effectively reduced, the rotating speed of the motor is increased, and the noise of the motor is reduced.

The conductive circuit board 31 is provided with a circular groove 35 at the center near one side of the rectifier PCB 26, and one end of the main shaft 50 far away from the casing 10 is rotatably connected with the circular groove 35. The circular groove 35 can effectively prevent the main shaft 50 from falling off, the magnetic steel 32 is bonded on the conductive circuit board 31, and the magnetic steel is coupled with the coil electromagnetic field at the nearest distance.

One side surface of the rectifier PCB 26 close to the brush assembly is provided with 6 commutating conducting strips 27 which are uniformly distributed at intervals along the circumferential direction, and the first brush 33 and the second brush 34 are respectively connected with one commutating conducting strip 27. The commutation conducting strips constitute a commutator for current commutation.

The magnetic steel 32 is circular, the rectifying PCB 26 is circular, and the outer diameter of the rectifying PCB 26 is smaller than the inner diameter of the magnetic steel 32. The carbon film resistor is arranged in the rectifying PCB 26 to replace the traditional capacitor, and the carbon film resistor is already finished when the circuit board 31 is manufactured in the previous period, so that the operation efficiency is effectively improved; the outer diameter of the rectifier PCB 26 is smaller than the inner diameter of the magnetic steel 32, so that the inner space of the motor can be greatly saved, no other object is blocked between the coil and the magnetic steel 32, the thickness of the rotor assembly 20 can be maximized, the coil and the magnetic steel 32 keep the optimal distance, the magnetic field and the electromagnetic field can be favorably exerted to the maximum, and the product performance can be favorably improved.

In practical use of the present embodiment, the external power source is connected to the first conductive ring 311 and the second conductive ring 312 respectively, the current flows to the conducting strip 27 through the brush, the conducting strip 27 is welded to the rectifying PCB 26, the printed circuit through the rectifying PCB 26 flows to the first coil 24 and the second coil 25 respectively, and then the electromagnetic force is generated in the magnetic field formed by the magnetic steel 32, and then the whole rotor assembly 20 is driven to rotate around the main shaft 50, through the action of the conducting strip 27, the circulation of the process is realized, and because the center of gravity of the eccentric vibrator 23 deviates from the main shaft 50, the vibration that lasts can occur in the vibration process.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a novel flat motor, includes casing (10), lid (40), stator module (30) and rotor subassembly (20), casing (10) are connected and form the cavity between the two with lid (40), stator module (30) and rotor subassembly (20) hold in the cavity, its characterized in that, stator module (30) include magnet steel (32), conductive line board (31) and be used for be in the brush subassembly of conduction current between conductive line board (31) and rotor subassembly (20), magnet steel (32) bond and be close to conductive line board (31) on a side of rotor subassembly (20), the brush subassembly is installed in the circle of magnet steel (32), brush subassembly one end with conductive line board (31) electricity is connected, the other end with rotor subassembly (20) electricity is connected.

2. The flat motor as claimed in claim 1, wherein the conductive circuit board (31) has a circular structure, the conductive circuit board (31) is provided with a first conductive ring (311) and a second conductive ring (312) which are spaced apart from each other, the brush assembly comprises a first brush (33) and a second brush (34), one end of the first brush (33) is electrically connected to the first conductive ring (311) and the other end is electrically connected to the rotor assembly (20), and one end of the second brush (34) is electrically connected to the second conductive ring (312) and the other end is electrically connected to the rotor assembly (20).

3. The new flat motor according to claim 2, characterized in that said first conductive ring (311) and second conductive ring (312) are concentric circles of unequal radius.

4. The novel flat motor as claimed in claim 2, wherein the rotor assembly (20) comprises a rotor support (21), a first coil (24), a second coil (25), an eccentric vibrator (23) and a rectifying PCB (26), the rotor support (21) is provided with a rotor bearing (22) at the center, the housing (10) is provided with a main shaft (50) at the center of the inner wall, the main shaft (50) is inserted into the rotor bearing (22) and is connected with the rotor bearing (22) in a rotating manner; the eccentric vibrator (23) is connected to one side wall of the rotor support (21), and the first coil (24) and the second coil (25) are respectively connected to the side wall of the rotor support (21) and are respectively positioned on two sides of the eccentric vibrator (23); the rectifier PCB (26) is attached to one side surface, close to the electric brush assembly, of the rotor support (21); one side surface of the rectifying PCB (26) is electrically connected with the first coil (24) and the second coil (25) respectively, and the other side surface of the rectifying PCB is electrically connected with the first electric brush (33) and the second electric brush (34) respectively.

5. The new flat motor, as claimed in claim 4, characterized in that on the outer wall of the end of the main shaft (50) close to the inner wall of the casing (10) there is fixedly connected an annular blade (51).

6. The flat motor as claimed in claim 4, wherein the conductive circuit board (31) is provided with a circular groove (35) near the center of one side of the rectifying PCB (26), and one end of the main shaft (50) far away from the housing (10) is rotatably connected with the circular groove (35).

7. The new flat motor according to claim 5, characterized in that the main shaft (50) is further sleeved with a graphene gasket (52), and the graphene gasket (52) is located between the annular blade (51) and the end face of the rotor bearing (22).

8. The flat motor as claimed in claim 4, wherein a plurality of conducting segments (27) are circumferentially uniformly and alternately arranged on a side of the rectifying PCB (26) adjacent to the brush assembly, and the first brush (33) and the second brush (34) are respectively connected to one conducting segment (27).

9. The flat motor according to claim 4, wherein the magnetic steel (32) is circular, the rectifying PCB (26) is circular, and the outer diameter of the rectifying PCB (26) is smaller than the inner diameter of the magnetic steel (32).

10. The new flat motor according to claim 4, characterized in that said rotor support (21) is made of stainless steel material.