CN101588088A - Motor - Google Patents

Abstract

A kind of motor.It comprises by stator and molded section integrally formed, and the upper and lower is formed with the stator module of opening portion, top and lower opening part respectively; Be installed in the printed circuit board (PCB) in the opening portion, top of stator module; Be inserted in the lower opening part of stator module, and rotatably be arranged on the rotor assembly of stator module inside; With upper bracket and the lower bracket that can seal respectively the opening portion, top and the lower opening part of stator module.Motor provided by the invention have the manufacturing of being easy to, compact conformation, safe and easy to use, reliability is high and advantage such as long service life.

Description

Motor

Technical field

The present invention relates to a kind of motor, particularly relate to a kind of being easy to and make, can raise the efficiency and the life-span,, thereby pick and place easily and motor easy to use simultaneously owing to realized miniaturization.

Background technology

Usually, motor is a kind ofly by the electromagnetic action between stator and the rotor rotor to be rotated, and revolving force is passed device to the outside.Here, the revolving force of above-mentioned rotor is to pass to load and with its driving by rotating shaft.In addition, said stator generally includes stator core and the coil that is wound on the stator core, and stator core is by mutually insulated between insulator or roll and coil.But, because at least a portion of said stator and rotor is mounted in the support that forms the motor external structure, therefore the problem that variation or vibration owing to external environment condition sustain damage above-mentioned coil might appear.In addition, also there is the hidden danger of outwards leaking electricity by above-mentioned coil or stator core in this motor.

In order to address the above problem, commonly used at present stator core, coil and insulator are assembled into stator, then stator is molded as the method for an integral body and makes stator module.This for convenience of explanation motor is called this motor stator moulded motor in the following description.In addition, need be provided for the control device of drive motors on the motor usually.In this case, above-mentioned drive unit can be arranged on the motor, also can be installed in the product that uses motor.But, because this control device normally is arranged on such as on the substrates such as printed circuit board (PCB), therefore for being provided with the motor of this printed circuit board (PCB), inside is difficult to make stator moulded motor, this is because need to be electrically connected between the coil of molding piece inside and above-mentioned printed circuit board (PCB), but is difficult to realize.In addition, even realized this connection, its reliability still has problems.In addition,, because the assembling procedure complexity, therefore have not easy-to-assemble problem, and it is very high to occur the probability of defective item in assembling process for stator moulded motor.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of being easy to manufacture and assemble, can enhance productivity, and printed circuit board (PCB) can be more prone to, firmly be combined in the accurate locational motor of stator module.

In order to achieve the above object, motor provided by the invention comprises by stator and molded section integrally formed, and the upper and lower is formed with the stator module of opening portion, top and lower opening part respectively; Be installed in the printed circuit board (PCB) in the opening portion, top of stator module; Be inserted in the lower opening part of stator module, and rotatably be arranged on the rotor assembly of stator module inside; With upper bracket and the lower bracket that can seal respectively the opening portion, top and the lower opening part of stator module.

Described rotor assembly comprises rotor that is positioned at stator module inside and the rotating shaft that is rotated with the rotor one.

Described stator comprises the stator core of hollow and is positioned on the stator core, the insulator of the coil that is used to reel.

Described molded section is around living stator core and insulator.

Described molded section makes on the stator core and rotor showing out in opposite directions.

Described stator also comprises and being arranged on the insulator, is exposed at the top of molded section when forming molded section, is used for determining the positioning head of printed circuit Board position.

Be formed with on the described printed circuit board (PCB) and the corresponding location notch of positioning head.

The quantity of described positioning head is more than one at least.

Described positioning head is integrally formed on the insulator.

Described molded section is made by BMC material molding.

Described stator comprises also and being arranged on the insulator that the one end is exposed at the top of molded section when forming molded section, and the pin that is electrically connected with printed circuit board (PCB).

Described pin runs through insulator.

The other end of described pin is electrically connected with coil, and is positioned at the inside of molded section.

The manufacture method of motor provided by the invention is included in and forms molded section on the stator, with the 1st stage of this integrally formed stator module; In the 2nd stage of stator module top fitting printed circuit board; Utilize the 3rd stage of the opening portion, top on the upper bracket sealing stator module; To comprise that the rotor assembly of rotor is inserted into the 4th stage of stator module inside from the bottom; Utilize the 5th stage of the lower opening part on the lower bracket sealing stator module.

The manufacture method of described motor is combined in rotor on the rotating shaft before also being included in for the 4th stage, to form the stage of rotor assembly.

The manufacture method of described motor also is included in the stage that permanent magnet was set between the 3rd stage and the 4th stage on rotor.

In the process of the formation stator module in described the 1st stage, be exposed at molded section top with at least one of the pin that is used for determining the positioning head of printed circuit Board position and is electrically connected and be advisable with printed circuit board (PCB).

Motor provided by the invention has following effect:

The 1st, be easy to make and compact conformation;

The 2nd, come around stator by the molded section of making by insulating material, therefore safer and easy to use;

The 3rd, printed circuit board (PCB) can be combined on the accurate position of stator module more easily, and can when forming molded section, prevent that coil from sustaining damage, thereby can improve the reliability of electrical connection;

The 4th, can prevent to make and use in produce bad, so the reliability height and the long service life of motor;

The 5th, in the assembling process of motor, can in the operation after leaning on as far as possible, permanent magnet be installed, not only be convenient to make, but also can reduce the problem that might in manufacture process, produce to greatest extent;

The 6th, in the assembling process of motor because the bonding position of rotor assembly is different with the bonding position of printed circuit board (PCB), thus can be with the time in conjunction with rotor assembly with printed circuit board (PCB) between conflict and minimize.

Description of drawings

Fig. 1 is an electric machine structure decomposing schematic representation provided by the invention.

Fig. 2 is the stator structure schematic diagram shown in Fig. 1.

Fig. 3 is stator module shown in Fig. 1 and printed circuit board (PCB) bonding state schematic diagram.

Fig. 4 be among Fig. 2 I-I to cutaway view.

Fig. 5 is the planar structure schematic diagram of Fig. 3.

Fig. 6 is the stator partial structurtes enlarged diagram among Fig. 3.

Fig. 7 is the local enlarged diagram in electric machine structure schematic diagram provided by the invention and connector position.

Fig. 8 is a motor planar structure schematic diagram provided by the invention.

Fig. 9 is electric machine structure schematic diagram provided by the invention and upper bracket and the local enlarged diagram of molded section binding site.

Figure 10 is electric machine structure schematic diagram provided by the invention and upper bracket and molded section binding site cutaway view.

Embodiment

Below in conjunction with the drawings and specific embodiments motor provided by the invention is elaborated.

Fig. 1 is an electric machine structure decomposing schematic representation provided by the invention.As shown in Figure 1, motor provided by the invention mainly comprises stator module 100, rotor assembly 300 and printed circuit board (PCB) 200.Wherein rotor assembly 300 can rotate with respect to stator module 100, and printed circuit board (PCB) 200 then is used to control the rotation of rotor assembly 300.Stator module 100 comprises stator 110 and molded section 130, and wherein molded section 130 can preferably be made by BMC (Bulk MoldingCompound) material molding by forming such as materials such as resins.

Fig. 2 is the stator structure schematic diagram shown in Fig. 1.As shown in Figure 2, stator 110 comprises stator core 111, insulator 112 and stator coil 119 (below be called " coil ").Wherein stator core 111 is stacked together by a plurality of iron plates usually and forms, though do not illustrate, is formed with a plurality of pole shoes on it, and coil 119 is then reeled on each pole shoe and formed.In addition, can form state of insulation between each pole shoe and the coil 119 and the coil 119 that is easy to reel is provided with insulator 112 for making.Insulator 112 can have the structure that can be inserted in the upper and lower of stator core 111 respectively, and also can have can be with stator core 111 embedding and injection moldings and the structure integrally formed with stator core 111.Promptly, when by integrally formed stator core 111 of embedding and injection molding and insulator 112, both are difficult to from physically separating, when assembling, will be easy to pick and place like this, and with insulator 112 is made separately after situation about being combined in again on the stator core 111 compare, molded section generation type described later is more prone to.As shown in Figure 2, when insulator 112 embedding and injection moldings will be formed one with it after on the stator core 111.In addition, coil 119 is to be wound on the stator core 111 by insulator 112, therefore the parts that coil 119 is linked to each other with external power source need be set, that is, a kind of parts need be set and with coil 119 coiling starting point and end point---the end 121 of coil 119 is connected on the external power source.Though this has nothing to do with coil 119 connection single phase poaer supplies or three phase mains, for convenience of explanation, be only limited to the situation that coil 119 is connected three phase mains and describe.That is, the situation that turns on u, v, w phase power supply with coil 119 is that example describes, and this is the knowledge of generally using for the mode by device drive motors such as transducers, therefore omits its detailed description of carrying out.Be coil 119 among Fig. 2 be with u, v, w mutually power supply be connected.

Motor of the present invention is meant that mainly stator 110 is positioned at the motor of molded section 130 inside.That is, from the structure of outer most surrounding stator 110 and form molded section 130, thereby form the stator module 100 of an integral type.Though the stator 110 among Fig. 1 is to be in the state that is separated with molded section 130, is still and forms stator 110 earlier, and then form molded section 130, thereby make both form a stator module 100.Above-mentioned molded section 130 forms the portion of external structure of motors, and it is to be made by materials such as resins, so insulation property and water resistance are good.Simultaneously, the stator 110 that is wound with coil 119, is made it and external isolation around living by molded section 130, can prevent effectively that therefore coil 119 is damaged and produces electric leakage.In addition, molded section 130 is to be looped around the outside of stator 110, but not around being advisable with rotor 310 face 120 in opposite directions on the stator core 111, this is because be formed with the space between the outer circumference surface of face 120 and rotor 310, angle from efficiency of motor or noise, vibration, above-mentioned space need maintain the very little state of deviation, therefore maintains by the die-cut original surface configuration that forms with face 120 and is advisable.

Above-mentioned coil 119 need be electrically connected with external power source.Motor of the present invention also comprises pin, and above-mentioned pin can have multiple structure according to the type of coil 119 energized.Such as, when connecting u, v, w three phase mains, need to have 3 pins at least.Fig. 2 shows the power supply pin 113,114,115 that is electrically connected with u, v, each phase coil of w.In motor of the present invention, stator 110 by molded section 130 around living.In this case, be difficult to only to allow the end portion of coil 119 be exposed at molded section 130 outsides, this is because the intensity of coil 119 itself is too poor, therefore when forming molded section 130, the end 121 of coil 119 might be damaged, and also might be embedded in the inside of molded section 130 fully.Therefore, earlier the end 121 of coil 119 being connected electrically on the above-mentioned power supply pin 113,114,115, and make these power supply pins 113,114,115 be exposed at molded section 130 outsides to be advisable.In addition, above-mentioned pin, particularly each power supply pin 113,114,115 can be made bar-shaped by metal material, and with insulator 112 integrally formed being advisable.That is, when making insulator 112 by molding mode, above-mentioned each power supply pin 113,114,115 is embedded on the insulator 112 and forms one with it.This structure has been shown among Fig. 2, and particularly, above-mentioned each power supply pin 113,114,115 is advisable to run through insulator 112.Here, the lower end of above-mentioned power supply pin 113,114,115, promptly the one end is electrically connected with the end 121 of coil 119.Particularly, weld after coil 119 can being wound on an end of above-mentioned power supply pin 113,114,115.In addition, for being electrically connected of 121 of the ends of the end that prevents above-mentioned power supply pin 113,114,115 and coil 119 is damaged, all be positioned at molded section 130 inside with this end on above-mentioned each power supply pin 113,114,115 and be advisable.That is, as shown in Figure 4, an end of above-mentioned power supply pin 113,114,115 is advisable to be electrically connected back not being exposed on the external by molded section 130 isolation with the end 121 of coil 119.In addition, the upper end of above-mentioned power supply pin 113,114,115, promptly the other end is advisable with the outside that is exposed at molded section 130.Here, above-mentioned power supply pin 113,114,115 should have enough intensity, so that it does not sustain damage when forming molded section 130.Thereby the end 121 of above-mentioned coil 119 will be positioned at the inside of molded section 130 after being connected electrically in an end of power supply pin 113,114,115, thereby can not be exposed on the external; The other end of above-mentioned power supply pin 113,114,115 then is exposed at the outside of molded section 130, thereby can be electrically connected with external power source.

In addition, as shown in Figure 3, Figure 4, the other end of above-mentioned power supply pin 113,114,115 is exposed at the outside of molded section 130, the particularly top of molded section 130.That is, the upper and lower of molded section 130 is formed with opening portion, top 131 and lower opening part 132 respectively, and stator module 100, particularly molded section 130 are to combine with printed circuit board (PCB) 200 by opening portion, top 131.Certainly, according to the visual angle difference, also the opening portion, top can be called lower opening part.Here, the power supply pin 113,114,115 that is exposed at molded section 130 outsides is inserted in the hole 220 that is formed on the printed circuit board (PCB).Have circuit structure on the printed circuit board (PCB) 200, when being inserted into power supply pin 113,114,115 in the above-mentioned hole 220, form electrical connection between the two.Certainly,, can weld both combinations for more firmly.By being combined with corresponding hole 220 respectively, power supply pin 113,114,115 printed circuit board (PCB) 200 and molded section 130 can be combined.In this case, when each coil end that u, v, w go up mutually was connected with printed circuit board (PCB) 200 respectively, the central point that each coil of above-mentioned each phase need be formed was electrically connected with printed circuit board (PCB) 200.Thereby as required, in motor of the present invention, the power supply pin can also comprise zero line power supply pin 116.Be that zero line power supply pin 116 has the structure identical with other power supply pin 113,114,115, its connected mode is also identical.Here, motor of the present invention can also comprise positioning head 118.Above-mentioned positioning head 118 can make printed circuit board (PCB) 200 be positioned at position accurately.In the present invention, stator 110 is positioned at the inside of molded section 130, therefore is difficult to accurately be alignd in the position of printed circuit board (PCB) 200 and stator 110, also is difficult to the position of alignment rotor 310 or rotor assembly 300 and printed circuit board (PCB) 200.Usually, each control device that is used for drive motors is positioned at printed circuit board (PCB) 200.Particularly, on printed circuit board (PCB) 200, be provided with the not shown devices such as Hall element that can carry out perception to the position of rotor 310.Above-mentioned Hall element changes the position of coming perception rotor 310 by the perception magnetic line of force when permanent magnet 311 rotations of rotor 310.That is, motor is controlled based on the position of rotor 310.Therefore, for perception exactly goes out the position of rotor 310, the relative position of Hall element and rotor 310 is extremely important.At length, it is extremely important with respect to the relative position of stator 110 or rotor 310 to which is provided with the printed circuit board (PCB) 200 of Hall element.Therefore, printed circuit board (PCB) 200 need be combined on the accurate position of molded section 130 exactly, this point is extremely important.Certainly, the position of printed circuit board (PCB) 200 is determined to be combined with mute pin described later by aforesaid power supply pin 113,114,115,116 to realize.But when the coil 119 that forms as shown in Figure 2, power supply pin 113,114,115 accumulates in a certain side, and zero point, the power supply pin 116 then can be formed on its opposition side.In this case, if only utilize above-mentioned power supply pin or mute pin to determine the position of printed circuit board (PCB) 200, then there is the hidden danger that produces error.And, when connecting by welding manner, also error can take place in welding process.Therefore, operation such as then weld again with the position of determining earlier printed circuit board (PCB) 200 and be advisable, for this reason, motor of the present invention also comprises positioning head 118.In order to determine the binding site of printed circuit board (PCB) 200 more exactly, be provided with a plurality of positioning heads 118 on the motor.Fig. 2 shows two positioning heads 118.These positioning heads 118 can play a part printed circuit board (PCB) 200 is combined with molded section 130 in definite printed circuit board (PCB) 200 binding sites.Above-mentioned positioning head 118 is advisable with the position that is formed on mutual correspondence, is advisable with its position of determining positions according to power supply pin 113,114,115,116 simultaneously.In addition, positioning head 118 also can be integrally formed with insulator 121.That is form positioning head 118 when, forming insulator 121.Since positioning head 118 be be formed on printed circuit board (PCB) 200 on location notch 221 or location hole combine, therefore, positioning head 118 is advisable with the outside that is exposed at molded section 130.In addition, printed circuit board (PCB) 200 is not to be electrically connected with positioning head 118.Be not form circuit on the location notch 221.Printed circuit board (PCB) 200 combines with positioning head 118 earlier, and then carries out operation such as soldering, and positioning head 118 is inlayed and is combined in the location notch 221 as a result.When molded section 130 and printed circuit board (PCB) 200 in conjunction with the time, between the two to keep a determining deviation to be advisable, this is because be formed with behind the pin that is used to insert electronic component and outwards outstanding position on the bottom surface of printed circuit board (PCB) 200, therefore, be advisable with not direct fitting printed circuit board 200 on the top open surface 133 of the opening portion, top 131 that is formed at molded section 130.The pin or the circuit structure of electronic component are not set on the external margin of printed circuit board (PCB) 200, and form stage portion 134, so that form at interval between printed circuit board (PCB) 200 and the top open surface 133 in the edge of top open surface 133.In addition, stage portion 134 is advisable with the planar structure with certain area.This is because can more firmly fix printed circuit board (PCB) 200 when generating plane contacts between the bottom surface of the plane of stage portion 134 and printed circuit board (PCB) 200.Each pin 113,114,115,116 and positioning convex described later are advisable to be formed in the stage portion 134 simultaneously.Molded section 130 just can more firmly combine with printed circuit board (PCB) 200 like this, and its binding site also can be very accurate.

Below with reference to Fig. 1 the rotor assembly on the motor provided by the invention is elaborated.Rotor assembly 300 comprises rotor 310 and rotating shaft 313.In addition, rotor assembly 300 also comprises rotor core 312.Here, rotor 310 can have multiple shape, can be the permanent magnet rotor 310 that a plurality of permanent magnets 311 are installed in the outside along rotor core 312 shown in Figure 1.In addition, the centre of rotor core 312 is provided with rotating shaft 313.Usually rotating shaft 313 runs through rotor core 312.In addition, rotor assembly 300 is the inside that rotatably is arranged on stator module 100.In this case, motor of the present invention can be referred to as inner rotor type motor.At this moment, the inside of stator core 111 is formed with the space that rotor 310 can be set.In addition, the bearing 314 that also has rotatable support rotor assembly 300 on the rotor assembly 300.Above-mentioned bearing 314 can combine with upper bracket 410 described later or lower bracket 420, thus rotation support rotor assembly 300.Simultaneously, when bearing 314 combines with upper bracket 410 or lower bracket 420, can prevent that rotor assembly 300 from moving on rotating shaft 313.

Below with reference to Fig. 1 motor manufacturing method provided by the invention is elaborated.At first, form stator module 100 and rotor assembly 300.Certainly, also produce printed circuit board (PCB) 200.After having made above-mentioned each parts, begin to carry out the assembling of motor.At first, at the top of stator module 100 fitting printed circuit board 200.That is opening portion, top 131 fitting printed circuit boards 200 by stator module 100.Here, the size of opening portion, top 131 and shape correspond to suitable with size and shape with printed circuit board (PCB) 200.That is, opening portion, top 131 is the structures that are used in conjunction with printed circuit board (PCB) 200, if the size of printed circuit board (PCB) 200 is little, then the size of opening portion, top 131 also should correspondingly diminish.In addition, the center of printed circuit board (PCB) 200 is formed with the through hole 230 that is used to run through rotating shaft 313.Here, through hole 230 has when rotating shaft 313 vibration and does not conflict mutually with printed circuit board (PCB) 200, and the size that bearing 314 is passed through gets final product.That is, because most of structure of rotor assembly 300 is positioned at the below of printed circuit board (PCB) 200, so the diameter of through hole 230 is to be advisable less than the external diameter of rotor 310.After stator module 100 and printed circuit board (PCB) 200 combinations, upper bracket 410 is combined with stator module 100, to close opening portion, top 131.But the sealing here only is meant keeps apart the inside and outside of stator module 100, is not the meaning that seals fully.After mutually combining between stator module 100, printed circuit board (PCB) 200 and the upper bracket 410, insert rotor assembly 300 by the lower opening part 132 of stator module 100.That is,, therefore can not conflict mutually because the direction of the direction of printed circuit board (PCB) 200 combinations and rotor assembly 300 combinations is opposite, thus can prevent rotor assembly 300 in conjunction with the time damage printed circuit board (PCB) 200.In addition, behind the insertion rotor assembly 300,, close the lower opening part 132 of stator module 100 afterwards with lower bracket 420 by the position of bearing 314 definite rotor assembly 300.In addition, move vertically, E shape ring 530 can be inserted in the end of rotating shaft 313 in order to prevent rotor assembly 300.In addition, as required, can be on upper bracket 410 and lower bracket 420 in conjunction with the pad of making by materials such as rubber 510,520 that is used to prevent vibrate.In the present invention, because printed circuit board (PCB) 200 is different with the bonding position of rotor assembly 300, therefore when assembling motor immediately just after installing permanent magnet 311 on the rotor 310.Promptly, after printed circuit board (PCB) 200 and stator module 100 combination and installing permanent magnet 311, can immediately rotor assembly 300 be combined on the stator module 100, thereby finish the assembling of motor, so not only can simplify the subsequent handling of assembling motor to greatest extent, and install behind the permanent magnet 311 immediately that assembling motor can also prevent to adhere to foreign matter on the permanent magnet 311, and can prevent damage printed circuit board (PCB) 200 when assembling is equipped with the rotor assembly 300 of permanent magnet 311 on it.In addition, because assemble rotor assembly 300 again behind the assembled printed circuit boards 200, therefore can be at an easy rate in conjunction with printed circuit board (PCB) 200 and stator module 100, this is because if earlier in conjunction with rotor assembly 300 and stator module 100, and then, mean that then permanent magnet 311 later subsequent handlings are installed to be increased on rotor 310 in conjunction with printed circuit board (PCB) 200; In addition, because the influence of permanent magnet 311, damaging might appear in printed circuit board (PCB) 200, therefore can reduce operating efficiency.

Below aforesaid mute pin 117 is elaborated.As previously mentioned, motor of the present invention comprises with coil 119 and being electrically connected, and the power supply pin 113,114,115,116 that is connected with external power source.Can also comprise and the identical mute pin 117 of above-mentioned power supply pin 113,114,115,116 shapes simultaneously.Here, mute pin 117 is not electrically connected with coil 119.Certainly, also can be electrically connected as required with coil 119.Above-mentioned mute pin 117 can make printed circuit board (PCB) 200 stably be combined on the stator module 100 with a plurality of power supply pins 113,114,115,116.In addition, identical with above-mentioned each power supply pin 113,114,115,116, above-mentioned mute pin 117 also can be electrically connected with printed circuit board (PCB) 200.At this moment, above-mentioned mute pin 117 makes stator core 111 ground connection.That is, it is electrically connected with stator core 111, forms ground structure by printed circuit board (PCB) 200 and connector 230.

Below with reference to Fig. 6 above-mentioned ground structure is elaborated.At first, identical with other power supply pin 113,114,115,116, above-mentioned mute pin 117 runs through insulator 112, and the one end is positioned at the inside of molded section 130, and the other end is exposed at the outside of molded section 130.Here, an end of mute pin 117 is electrically connected with stator core 111.This electric connection mode has a variety of, such as, can utilize electric wire, make an end of electric wire be connected electrically in an end of mute pin 117, and the other end soldering that makes electric wire is on stator core 111.But,, can use torsion spring 600 in order to be electrically connected more easily.The centre of above-mentioned torsion spring 600 is inserted in the other end of mute pin 117, and the two ends of torsion spring 600 are to extend upward and form from its central part, and contact with stator core 111.That is, under state of contact, strain takes place in the two ends of torsion spring 600, keeps contact condition under the elastic force effect.Certainly, above-mentioned torsion spring 600 is to be made by electric conducting material.In addition, for the two ends that make torsion spring 600 more firmly keep being electrically connected with stator core 111, can on stator core 111, form insertion section 160, and the two ends of in insertion section 160, inserting torsion spring 600, can prevent effectively like this torsion spring 600 when molded section 130 forms with the other end disengaging of mute pin 117.Certainly, the two ends of above-mentioned torsion spring 600 are inserted in after strain in the insertion section 160, therefore can keep by elastic force to electrically contact.In addition, break away from, insertion section 160 can be passed in the two ends of torsion spring 600, and the position that penetrates is formed warp architecture in order to prevent torsion spring 600 better, and though like this molded section 130 along which side of stator 110 to formation, can both prevent torsion spring 600 disengagings.Stator core 111 is electrically connected with torsion spring 600 by said structure, and torsion spring 600 is electrically connected with mute pin 117, therefore can form the ground structure of stator core 111.In addition, can be as required an end of the pin 117 of making mute be connected electrically on the printed circuit board (PCB) 200, forms ground structures by circuit structure and the connector 230 that is formed on printed circuit board (PCB) 200.5 connector connecting portions 240 that are formed on the printed circuit board (PCB) 200 have been shown among Fig. 5, the connector 230 that is formed with 5 electric wire flutings 232 has been shown among Fig. 7.That is, above-mentioned 5 connector connecting portions 240 and electric wire fluting 232 is respectively applied for and constitutes u, v, w power supply point, zero point and earth point structure.Thereby motor of the present invention can form ground structure at an easy rate by mute pin 117 and connector 230.

The structure of the support on the motor provided by the invention and support and molded section binding site is elaborated to Figure 10 below with reference to Fig. 7.At first, as shown in Figure 1, upper bracket 410 and lower bracket 420 can have same shape, and are made by same material.That is, though its size might be different mutually according to size of opening portion, top 131 and lower opening part 132, its shape can be identical, thereby both also can be identical with the structure of molded section 130 binding sites.For the convenience on illustrating, below only the structure of upper bracket 410 with molded section 130 binding sites described.In motor of the present invention, upper bracket 410 is suitable to be made for by metal material.In addition, upper bracket 410 can be used such as a certain material in iron plate, steel plate or the stainless-steel sheet and form by die-cut.Upper bracket 410 covers the opening portion, top 131 of molded section 130, thereby with the inside and outside isolation of motor.That is, the exterior lateral sides of motor and part end face are occupied by molded section 130, and the remainder of end face is occupied by upper bracket 410.Certainly, the part bottom surface of motor is occupied by lower bracket 420.The top of printed circuit board (PCB) 200 is provided with conducting parts 210.That is, with the end face of printed circuit board (PCB) 200 conducting parts 210 that is provided with separated by a distance, the distance between above-mentioned conducting parts 210 and upper bracket 410 bottom surfaces is smaller.Certainly, when increasing the height of upper bracket 410, above-mentioned spacing can strengthen, but can cause the whole height of motor to increase like this, therefore can not satisfy the requirement of motor miniaturization, therefore, upper bracket 410 be provided with height with identical being advisable of height of molded section 130.Central part in upper bracket 410 is formed with the bearing resettlement section 450 that is used to install bearing 314.That is, bearing 314 is installed, in bearing resettlement section 450 so that rotor assembly 300 is rotatably supported.In addition, also to mobile limit of rotor assembly 300 on rotating shaft 313 directions.Here, along with the rotation of rotor assembly 300 will be vibrated, and this vibration will pass to bearing resettlement section 450 by bearing 314, upper bracket 410 just might be vibrated like this, and this vibration can produce noise, therefore this is because upper bracket 410 is to be made by materials such as metallic plates, is easy to generate to tremble and make a noise.Therefore, in motor of the present invention, for above-mentioned vibration and noise minimization, upper bracket 410 is advisable to have bigger rigidity.But compare to improve rigidity with thickness, improve the rigidity better effects if by forming structures such as rib 420 by increase upper bracket 410.When adopting rib 420, upper bracket 410 not only can keep lighter weight, but also can improve its rigidity, thereby reduces vibration and noise.In addition, by adopting rib 420 that the motor of perfect heat-dissipating can also be provided.In addition, rib 420 is recessed to form downwards with the end face from upper bracket 410 and is advisable, and this is because if project upwards, and the whole height of motor is increased, and therefore is difficult to satisfy the requirement of motor miniaturization.If have rib 420 structures of above-mentioned depression, the distance between upper bracket 410 and printed circuit board (PCB) 200 end faces is diminished, particularly make and the distance that is installed between the conducting parts 210 of printed circuit board (PCB) 200 top face diminishes.Above-mentioned conducting parts 210 can be active element (such as, the switch element that is used to switch), because stream has electric current in the active element, therefore needs to eliminate the hidden danger of electric leakage, thereby the enough insulation distances of maintenance between the upper bracket 410 that need and be formed by electric conductor.Therefore, in motor of the present invention, only the privileged site on the end face of upper bracket 410 forms a plurality of ribs 420 to lower recess, and does not form rib 420 at other position.Such as, as shown in Figure 8, it is a plurality of that above-mentioned rib 420 can be radial formation.In addition, though do not illustrate, can on the circumference of certain radius, form a plurality of ribs.In addition, the rib on the above-mentioned circumference also can form along radial direction.That is, above-mentioned rib 420 with only be formed on except that with conducting parts 210 position in opposite directions other position be advisable its shape and arrange and can have various ways.Simultaneously, above-mentioned rib 420 is to form suitable by punch process simultaneously with upper bracket 410.

To shown in Figure 10, above-mentioned conducting parts 210 can be positioned at the external margin top of printed circuit board (PCB) 200 as Fig. 7.In this case, in the exterior periphery specific region of upper bracket 410, rib 420 is not set.Certainly, should according to conducting parts 210 in a circumferential direction width and correspondingly determine above-mentioned specific region.Here, the position that will not form rib is called planar portions 460.In order to ensure the insulation distance between upper bracket 410 and the conducting parts 210, planar portions 460 need be positioned at and conducting parts 210 position in opposite directions.That is, when being combined in upper bracket 410 on the molded section 130, planar portions 460 is positioned at and conducting parts 210 position in opposite directions., in motor of the present invention, combine with molded section 130 on certain location for making 410 of upper bracket, described motor also comprises location division 231,430 for this reason.That is, above-mentioned location division 231,430 lays respectively on upper bracket 410 and the molded section 130, and it can make upper bracket 410 and 130 of molded section pass through ad-hoc location, and planar portions 460 is combined in position in opposite directions with conducting parts 210.Such as, above-mentioned location division 231 can be on the opening portion, top 131 of molded section 130, form along an outstanding projection of radial direction, location division 430 then be on the exterior periphery of upper bracket 410, form cut and can insert a groove of above-mentioned projection along radial direction.Illustrate above-mentioned structure among Fig. 7.Certainly, also can convex to form on upper bracket 410, and groove is formed on the molded section 130 above-mentioned.In addition, motor of the present invention can also comprise with molded section 130 and printed circuit board (PCB) 200 and combining, and is used to connect the connector 230 of external power source.One end of above-mentioned connector 230 is positioned at the outside of molded section 130, and the other end is positioned at the inside of molded section 130.For this reason, as Fig. 3 and shown in Figure 5, form the connector joint portion 135 that combines with connector 230 with top and be advisable in molded section 130.Above-mentioned connector joint portion 135 can form by a part of structure of cutting molded section 130 tops.Thereby, the shaped upper part of above-mentioned connector 230 with the shaped upper part, particularly molded section 130 of molded section 130 on form identical being advisable of shape of opening.In addition, the part of above-mentioned location division 231,430 can be formed on the connector 230, rather than on the molded section 130, this be because, above-mentioned location division the 231, the 430th allows 410 structures that combine by ad-hoc location in top and upper bracket of molded section 130, therefore the operator need know its ad-hoc location in advance, so that assemble more easily.At length, in assembling process,, might be not easy to know the ad-hoc location on molded section 130 tops though know the ad-hoc location (such as by above-mentioned planar portions or groove etc.) of upper bracket 410 easily.If above-mentioned location division 231,430 is set, then can know the ad-hoc location on molded section 130 tops at an easy rate by connector 230 on connector 230.

The structure of molded section 130 and upper bracket 410 binding sites is elaborated to Figure 10 below with reference to Fig. 9.In motor of the present invention, the top of molded section 130 is formed with opening portion, aforesaid top 131.That is, stator module 100 is to make its inside and outside connection by opening portion, top 131.Upper bracket 410 closes opening portion, top 131.Here, identical with common motor, upper bracket 410 is that brute force is pressed in the opening portion, top 131.But, in this case, might immerse moisture by opening portion, top 131.In order to prevent that moisture from immersing, and need form waterproof construction between molded section 130 and upper bracket 410.For this reason, in motor of the present invention, it is different mutually that its opening portion, top 131 has internal diameter, and form outside inwall 137 and the inboard inwall 136 and the planar portions 138 of stage each other.Above-mentioned planar portions 138 is formed on the top of molded section 130.That is, the upper end of outside inwall 137 is higher than the upper end of inboard inwall 136, thereby planar portions 138 is formed by the upper end of inboard inwall 136.Upper bracket 410 covers opening portion, top 131, and its shape is corresponding with opening portion, top 131.When opening portion, top 131 had circular configuration, upper bracket 410 also had circular configuration.Here, the external diameter of upper bracket 410 is advisable with the internal diameter less than opening portion, top 131 outside inwalls 137 of molded section 130.Certainly, the external diameter of upper bracket 410 must be greater than the internal diameter of opening portion, the top 131 inboard inwalls 136 of molded section 130.The part-structure of the radial extremity 441 of upper bracket 410 is installed on the planar portions 138.Here, because the external diameter of upper bracket 410 is less than the internal diameter of outside inwall 137, therefore, formation gap d at regular intervals between the radial extremity 441 of upper bracket 410 and outside inwall 137.In addition, though do not illustrate, can in above-mentioned gap d, inject resin to form resin piece.When above-mentioned resin piece was used in conjunction with molded section 130 and upper bracket 410, it can also prevent that moisture is impregnated into inside by above-mentioned gap d.Therefore,, promptly can form above-mentioned resin piece, such as can be with epoxy resin or silica gel by multiple material as long as can satisfy above-mentioned condition.In addition, in order in above-mentioned gap d, to inject the resin of q.s, along the circumferential direction form groove 139 with the outside and be advisable in planar portions 138.That is, can form resin piece by size, thereby can inject resin fully, to improve water resistance and binding ability corresponding to the degree of depth of above-mentioned groove 139 and width by groove 139 greater than upper bracket 410 thickness.Certainly, can also prevent to occur problems such as bad order because of resin is excessive.

As shown in figure 10, the width of above-mentioned groove 139 is advisable with the width greater than above-mentioned gap d, this be because if the partial width of groove 139 that is formed on above-mentioned gap d downside greater than gap d, then above-mentioned resin not only can be solidificated in the thickness position of upper bracket 410 radial extremity 441, but also can be solidificated in its bottom surface portions position, thereby can increase the contact area with upper bracket 410 or opening portion, top 131 contacted resin pieces, can further improve water resistance and binding ability with this.

As mentioned above, motor of the present invention can also comprise connector 230.Above-mentioned connector 230 is combined on the printed circuit board (PCB) 200 that is fixed in molded section 130 inside, is used for external power source is connected to printed circuit board (PCB) 200.Above-mentioned connector 230 combines with the connector joint portion 135 that is formed on molded section 130 tops, so the shaped upper part of connector 230 is to be advisable with the shape of opening portion, top 131 is corresponding.Therefore, upper bracket 410 not only combines with molded section 130, but also combines with connector 230, therefore connector 230 more firmly can be fixed on the molded section 130.In addition, in motor of the present invention, not only be formed with opening portion, top 131 on the above-mentioned molded section 130, but also can form lower opening part 132.Here, lower opening part 132 can be identical with said structure with the structure of lower bracket 420 binding sites.But,, then there is no need certain identical with said structure if lower bracket does not immerse the possibility of moisture.Certainly, if there is the possibility that immerses moisture in lower bracket 420, then said structure can be used for the structure of lower bracket 420 binding sites.In addition, in motor of the present invention, the opening portion 131,132 of molded section 130 and support 410,420 removes when comprising above-mentioned waterproof construction, can also comprise powerful mosaic texture or powerful pressing structure (below, convenience on illustrating is called " mechanicalness integrated structure ").That is, earlier above-mentioned support 410,420 mechanically is combined on the opening portion 131,132, and then carries out the injection and the curing of above-mentioned resin.This mechanicalness integrated structure can allow above-mentioned gap d be formed uniformly along the circumferencial direction of support 410,420, can prevent that support 410,420 from moving simultaneously when injecting resin.Here, above-mentioned mechanicalness integrated structure can form by the joggling part 440 that is inserted in the inboard inwall 136.Above-mentioned joggling part 440 can be from the inside below warpage and forming of the radial extremity of above-mentioned support 410,420.That is, above-mentioned joggling part 440 is inserted in the inboard inwall 136, tentatively support 410,420 is fixed on the molded section 130.In addition, above-mentioned joggling part 440 is the circumferencial direction formation along above-mentioned support 410,420, so it can also improve the rigidity of above-mentioned support 410,420.

Claims (17)

1, a kind of motor is characterized in that: described motor comprises by stator (110) and molded section (130) integrally formed, and the upper and lower is formed with the stator module (100) of opening portion, top (131) and lower opening part (132) respectively; Be installed in the printed circuit board (PCB) (200) in the opening portion, top (131) of stator module (100); Be inserted in the lower opening part (132) of stator module (100), and rotatably be arranged on the inner rotor assembly (300) of stator module (100); With upper bracket (410) and the lower bracket (420) that can seal respectively the opening portion, top (131) and the lower opening part (132) of stator module (100).

2, motor according to claim 1 is characterized in that: described rotor assembly (300) comprises rotor (310) that is positioned at stator module (300) inside and the rotating shaft (313) that is rotated with rotor (310) one.

3, motor according to claim 2 is characterized in that: described stator (110) comprises the stator core (111) of hollow and is positioned on the stator core (111), the insulator (112) of coil (119) that are used to reel.

4, motor according to claim 1 is characterized in that: described molded section (130) is around living stator core (111) and insulator (112).

5, motor according to claim 1 is characterized in that: described molded section (130) is gone up by stator core (111) and rotor (310) face (120) in opposite directions exposes.

6, motor according to claim 3, it is characterized in that: described stator (110) also comprises and being arranged on the insulator (112), when forming molded section (130), be exposed at the top of molded section (130), be used for determining the positioning head (118) of printed circuit board (PCB) (200) position.

7, motor according to claim 6 is characterized in that: be formed with on the described printed circuit board (PCB) (200) and the corresponding location notch of positioning head (118) (221).

8, according to claim 6 or 7 described motors, it is characterized in that: the quantity of described positioning head (118) is more than one at least.

9, motor according to claim 8 is characterized in that: described positioning head (118) is integrally formed on the insulator (112).

10, motor according to claim 1 is characterized in that: described molded section (130) is made by BMC material molding.

11, motor according to claim 3, it is characterized in that: described stator (110) also comprises and being arranged on the insulator (112), the one end is exposed at the top of molded section (130) when forming molded section (130), and the pin (113 that is electrically connected with printed circuit board (PCB) (200), 114,115).

12, motor according to claim 11 is characterized in that: described pin (113,114,115) runs through insulator (112).

13, motor according to claim 12 is characterized in that: the other end of described pin (113,114,115) is electrically connected with coil (119), and is positioned at the inside of molded section (130).

14, a kind of manufacture method of motor as claimed in claim 1 is characterized in that: the manufacture method of described motor is included in stator (110) and goes up formation molded section (130), with the 1st stage of this integrally formed stator module (100); In the 2nd stage of stator module (100) top fitting printed circuit board (200); Utilize the 3rd stage of the opening portion, top (131) on upper bracket (410) the sealing stator module (100); The rotor assembly (300) that will comprise rotor (310) is inserted into the 4th inner stage of stator module (100) from the bottom; Utilize the 5th stage of the lower opening part (132) on the lower bracket sealing stator module (100).

15, the manufacture method of motor according to claim 14 is characterized in that: the manufacture method of described motor is combined in rotor (310) on the rotating shaft (313) before also being included in for the 4th stage, to form the stage of rotor assembly (300).

16, according to the manufacture method of claim 14 or 15 described motors, it is characterized in that: the manufacture method of described motor also is included in the stage that permanent magnet (311) were set between the 3rd stage and the 4th stage on rotor (310).

17, the manufacture method of motor according to claim 14, it is characterized in that: in the process of the formation stator module (100) in described the 1st stage, to be used for determining the positioning head (118) of printed circuit board (PCB) (200) position and the pin (113 that is electrically connected with printed circuit board (PCB) (200), 114,115) at least one in is exposed at molded section (130) top and is advisable.

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