CN101572459A - Motor - Google Patents
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- CN101572459A CN101572459A CNA2008100529715A CN200810052971A CN101572459A CN 101572459 A CN101572459 A CN 101572459A CN A2008100529715 A CNA2008100529715 A CN A2008100529715A CN 200810052971 A CN200810052971 A CN 200810052971A CN 101572459 A CN101572459 A CN 101572459A
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Abstract
The invention discloses a motor which comprises a stator assembly, a PCB and a rotor. The stator assembly is integrally formed by a hollow stator iron core, a stator and a molding part; the stator is arranged on the stator iron core and provided with an insulator for winding a winding, and the molding part encircles the stator iron core and the insulator; the PCB is mounted at the upper part of the stator assembly, and the rotor is rotatably arranged in the stator assembly. The motor is characterized by also comprising a positioning head which is arranged on the insulator, exposed out of the upper part of the molding part during molding and used for determining the position of the PCB. The motor is easy to manufacture and has the advantages of higher efficiency, longer service life, miniaturization, easy mounting and convenient use.
Description
Technical field
The present invention relates to a kind of motor, particularly relate to a kind of be easy to make, have greater efficiency and less than long life, volume, be easy to install and motor easy to use.
Background technology
Usually, motor is meant by the electromagnetic action between stator and the rotor, makes the rotor rotation, and the device of revolving force biography to the outside.Wherein, the revolving force of rotor passes to load through rotating shaft, makes its rotation.Described stator generally includes stator core and the coil that is wound on the stator core.Stator core is by insulator or roll and above-mentioned coil insulation.
But at least a portion of said stator and rotor is arranged in the support that forms the motor outward appearance, the problem that variation or vibration owing to external environment condition damage coil might occur.In addition, also there is the hidden danger of outwards leaking electricity by above-mentioned coil or stator core.
In order to address the above problem, in the prior art, after stator core, coil and insulator are assembled into stator, said stator is molded as an integral body usually, make stator assembly.For convenience of explanation, in the following description this motor is called stator moulded motor.
In addition, on motor, need to be provided with the control device of drive motors usually.Described control device can be arranged in the motor, also can be arranged in the product that uses motor.This control device is formed on the substrate (printed circuit board (PCB)) etc., for the interior motor that is provided with this printed circuit board (PCB), is difficult to realize stator moulded motor.This is because being positioned at needs conduction to connect between the coil of molding piece inside and the printed circuit board (PCB) (PCB), but is difficult to realize.Even formed this connection, its reliability also has problems.In addition,, because the assembling procedure complexity, do not allow easy-to-assemble problem, and it is very high to occur the probability of defective products in assembling process so exist for stator moulded motor.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide the stator moulded motor that is provided with PCB in a kind of, specifically, the object of the present invention is to provide a kind of motor of making, assemble and can increasing work efficiency of being easy to.
Another object of the present invention is to provide a kind of accurate locational motor that can be more prone to, firmly be combined in stator assembly PCB.
In order to achieve the above object, motor of the present invention comprises: formed by stator and molded section, be formed with the stator assembly of opening portion in the upper and lower respectively; Be installed in the PCB on said stator assembly top; Insert in the lower opening part of described stator assembly, can be rotatably set in the rotor assembly in the stator assembly; Upper bracket and the lower bracket that the opening portion, upper and lower of described stator assembly is sealed respectively.
Described rotor assembly comprises rotor that is positioned at stator assembly inside and the rotating shaft that rotates integratedly with rotor, described stator comprise the stator core of hollow and be positioned on the stator core, the insulator of the coil that is used to reel.
Above-mentioned molded section is encircled above-mentioned stator core and insulator.Preferably, molded section makes in the stator core and relative the showing out of rotor.This is because described stator and rotor form the space at the above-mentioned face place of exposing, if form molded section in this gap, then are difficult to above-mentioned space is made by suitable size.
Also comprise in the present invention and be arranged on the described insulator, when forming molded section, be exposed at molded section top and determine the positioning head of PCB position.That is,, just be difficult to determine the accurate installation site of PCB with respect to stator as long as after encircling the stator that comprises insulator with molded section.Therefore, even be formed with molded section, also can be fixed on PCB exactly on the accurate position of stator by above-mentioned positioning head.In addition, be formed with location notch at above-mentioned PCB with the corresponding position of positioning head.
Above-mentioned positioning head has one at least.Preferably, positioning head is formed on the above-mentioned insulator.
Above-mentioned molded section can be passed through block moulding material, and (Bulk Molding Compound, BMC) molding forms.
The present invention also comprises top that is arranged on the above-mentioned insulator, is exposed at molded section when forming molded section and the plug that is connected with the PCB conduction.Above-mentioned plug runs through above-mentioned insulator.
Above-mentioned plug is made by electric conductor, and the coil that is wound on the stator is connected with the PCB conduction.Simultaneously, above-mentioned plug soldering is fixed on above-mentioned PCB on the stator assembly on above-mentioned PCB.
The other end of above-mentioned plug is connected with the coil conduction, and is positioned at molded section inside.That is, after the other end of above-mentioned plug is arranged on inside, the plug of molded section with the state that is connected with above-mentioned coil a end was exposed at the top of molded section, the integral body of above-mentioned coil can be positioned at the inside of molded section.Therefore, the part in the above-mentioned coil need not to be exposed at the molded section outside, thereby can prevent when forming molded section that coil from damaging, and particularly prevents the end of coil, and promptly the part that is connected with the PCB conduction can not be damaged.
In order to reach aforementioned purpose, the manufacture method of motor provided by the invention comprises: form molded section on stator, thereby form the 1st stage of stator assembly; The 2nd stage of PCB is installed on the top of said stator assembly; Seal the 3rd stage of the opening portion, top of said stator assembly by upper bracket; Rotor assembly is inserted into the 4th stage of said stator assembly bottom; Seal the 5th stage of the lower opening part of said stator assembly by lower bracket.
Here, before above-mentioned the 4th stage, can also comprise the stage that rotor is combined on the rotating shaft, forms rotor assembly.In addition, between above-mentioned the 3rd stage and the 4th stage, can also comprise the stage that the permanent magnet to above-mentioned rotor magnetizes.
In the process of the formation stator assembly in above-mentioned the 1st stage, make decision PCB position positioning convex and with plug that the PCB conduction is connected in have at least one to be exposed at above-mentioned molded section top.
Motor provided by the invention comprise by the stator core with hollow, be positioned on the described stator core and have the insulator of the coil that is used to reel stator, encircle the stator assembly that the molded section of described stator core and insulator forms; Be installed in the PCB and the rotor that can be rotatably set in stator assembly inside on described stator assembly top, it is characterized in that: also comprise being arranged on the described insulator, when forming described molded section, be exposed to the top of molded section, be used to determine the positioning head of PCB position.
The present invention has following invention effect:
1. motor of the present invention is made easily, profile is small and exquisite;
2. motor of the present invention is encircled stator by the molded section of being made by insulating material, therefore can provide motor safer, easy to use;
3. motor of the present invention can easily be combined in PCB on the accurate position of stator assembly, and can prevent to form molded section time damage coil, improves the reliability of conduction; Owing to be provided with the sensor part of perception rotor-position, thereby can improve the accuracy of detection.
The present invention can prevent to make and use in produce bad, improve motor reliability, prolong its useful life.
5. in making the process of motor, can in the operation after leaning on as far as possible, magnetize, thereby the motor of easy manufacturing can be provided, and can reduce the problem that produces in the manufacture process to greatest extent.
6. in the manufacture process of motor because the bonding position of rotor assembly is different with the bonding position of PCB, occur in the time of therefore can be the installation rotor assembly with PCB between conflict and minimize.
Description of drawings
Fig. 1 is the decomposition texture schematic diagram of motor of the present invention;
Fig. 2 is the structural representation of the stator among Fig. 1;
Fig. 3 is the stator assembly among Fig. 1 and the integrated structure schematic diagram of printed circuit board (PCB);
Fig. 4 is along the profile of I-I line direction among Fig. 2;
Fig. 5 is the floor map of Fig. 3;
Fig. 6 is the local enlarged diagram of stator among Fig. 3;
Fig. 7 is the local enlarged diagram of motor schematic diagram of the present invention and connector;
Fig. 8 is the floor map of motor of the present invention;
Fig. 9 is the schematic diagram of motor of the present invention and the local enlarged diagram of upper bracket and molded section integrated structure;
Figure 10 is the schematic diagram of motor of the present invention and the part sectioned view of upper bracket and molded section integrated structure.
Wherein:
100: stator assembly 110: stator
113,114,115,116: power plug 117: mute latch
118: positioning head 119: coil
130: molded section 131,132: opening portion
200: printed circuit board (PCB) 210: conducting parts
230: connector 300: rotor assembly
310: rotor 313: rotating shaft
410,420: support 600: torsion spring
Embodiment
Structure to motor of the present invention is elaborated with reference to the accompanying drawings.
At first, as shown in Figure 1, motor of the present invention comprises: stator assembly 100, rotor assembly 300 and PCB 200.
That is, above-mentioned rotor assembly 300 rotates with respect to stator assembly 100.PCB wherein starts to control making usefulness, makes above-mentioned rotor assembly 300 rotations.Above-mentioned stator assembly 100 comprises: stator 110 and molded section 130.Wherein, molded section can be formed by materials such as resins, is preferably that (Bulk Molding compound, BMC) molding forms by block moulding material.
As shown in Figure 2, above-mentioned stator 110 comprises: stator core 111, insulator 112 and stator coil 119 (hereinafter referred to as " coil ").
Above-mentioned stator core 111 is formed by the steel disc of lamination usually, though do not illustrate, it is formed with a plurality of pole shoes, and reeling on each pole shoe forms coil 119.Here, to form state of insulation between above-mentioned each pole shoe and the stator core 111 easily and be provided with insulator 112 in order to make in order to reel above-mentioned coil 119 easily.
Above-mentioned insulator 112 can have the structure of the upper and lower that is inserted in said stator iron core 111 respectively, also can have the injection moulding of stator core 111 embeddings linings, the structure integrally formed with stator core 111.That is, when forming stator core 111 and insulator 112 by above-mentioned embedding lining integrated through injection molding ground, both form a stator assembly 100, therefore be difficult to from physically separating, thereby have the advantage that picks and places easily when assembling.Compare with the situation that insulator 112 is combined on the stator core 111 after with the manufacturing of discrete item form, be more prone to assembling.
In Fig. 2, insulator 112 embeddings lining is injection-moulded on the said stator iron core 111, is integrally formed therewith.
In addition, coil 119 is wound on the stator core 111 by insulator 112.Therefore need be provided with above-mentioned coil 119 is connected structure on the external power source etc.That is, a kind of structure need be set, the end 121 of the starting point of coil and terminal point-coil 119 is connected with external power source etc.
Though this has nothing to do with above-mentioned coil 119 connection single phase poaer supplies or three phase mains, for convenience of explanation, a situation to above-mentioned coil connection three phase mains describes now.That is, the situation with above-mentioned coil connection u, v, w phase power supply is that example describes.This is the knowledge of generally using for the mode by device drive motors such as transducers, therefore omits its detailed description.Among Fig. 2, the coil of stator 110 and u, v, w power supply connection mutually.
The present invention is particularly suitable for the motor that stator 110 is positioned at molded section 130 inside.That is, form molded section 130 with the structure of holding firmly son 110 from external rings, stator 110 and molded section 130 form one.Thereby, form a stator assembly 100.Though in Fig. 1, stator 110 is in the state that separates with molded section 130, form stator 110 and molded section 130 respectively earlier, make both form a stator assembly 100 again.
Above-mentioned molded section 130 forms the part profile of motor.Here, molded section is made by resin material etc., so its insulation property and water resistance are very outstanding.Simultaneously, the stator 110 that is wound with coil 119 is encircled by molded section 130, makes it and external isolation, can prevent coil damage and electric leakage effectively.
In addition, above-mentioned molded section 130 is encircled stator 110, and does not encircle in the stator core 111 face 120 relative with rotor 310.This be because, between the outer peripheral face of above-mentioned 120 and rotor, be formed with the space, from the angle of efficiency of motor or noise, vibration, the very little state of deviation will be kept in above-mentioned space.Therefore, keeping original shape (by original surface of die-cut formation) with above-mentioned 120 is advisable.
Above-mentioned coil 119 need be connected with the external power source conduction.Motor of the present invention comprises plug.Described plug is different and can have multiple structure according to the type of coil 119 energized.Such as, when connecting u, v, w three phase mains, to have 3 plugs at least.
In the embodiment shown in Figure 2, the power plug that is electrically connected with u, v, each phase coil of w is 113,114,115.
In motor of the present invention, stator 110 is encircled by molded section 130.In this case, be difficult to only to allow the end portion of coil be exposed at the outside of molded section 130.This is because the intensity of coil self is less, when forming molded section 130, coil end might be damaged, also might be embedded in fully in the molded section 130.Therefore, preferably, the end 121 of coil 119 is connected electrically on the above-mentioned power plug 113,114,115, makes power plug be exposed at molded section 130 outsides.
Above-mentioned plug, particularly each power plug can manufacture club shaped structure by metal material.In addition, above-mentioned power plug and insulator 112 form.That is, when making above-mentioned insulator 112 by molding, each power plug embedding lining forms one with it on above-mentioned insulator 112.Shown said structure among Fig. 2, particularly, above-mentioned each power plug runs through above-mentioned insulator 112 is advisable.
Here, the lower end of above-mentioned power plug 113,114,115, promptly an end is connected with the end conduction of coil 119.Particularly, can be wound on an end of above-mentioned power plug to coil after, weld.
In addition, be damaged for an end that prevents above-mentioned power plug is connected with the conduction of coil end part, an end of above-mentioned each power plug all is positioned at molded section 130 inside.
That is, as shown in Figure 4, after an end of above-mentioned power plug 113 and the end of coil 119 121 conductions are connected, isolated, be not exposed on the external by molded section 130.In addition, the upper end of power plug 113,114,115, i.e. the other end is exposed at the outside of molded section 130.Here, described power plug should have enough intensity, so that injury-free when forming molded section 130.
That is: after the end 121 of coil 119 is connected electrically in an end of power plug, be positioned at molded section 130 inside, can be exposed on the external; The other end of power plug is exposed at the outside of molded section 130, is connected with the external power source conduction.
In addition, as shown in Figure 3, Figure 4, the other end of above-mentioned power plug 113,114,115 is exposed at the outside of molded section 130, the particularly top of molded section 130.That is, be formed with opening portion 131,132 respectively in the upper and lower of molded section 130, stator assembly 100, particularly molded section 130 combine with PCB 200 by opening portion 131.Certainly, according to the difference at visual angle, also can call lower opening part to opening portion, above-mentioned top.
Here, the power plug that is exposed at molded section 130 outsides is inserted in the hole 220 that is formed on the PCB.Described PCB is formed with line construction, in the time of in power plug is inserted into hole 220, forms conduction between the two and connects.Certainly, can also make both more firm in combination by welding.
By power plug 113,114,115 is combined with each hole 220, PCB 200 and molded section 130 are combined.In this case, respectively with when PCB 200 is connected, the central point that need allow the coil of above-mentioned each phase form conducts electricity with above-mentioned PCB200 and is connected at each coil end of u, v, w phase.Therefore, as required, in motor of the present invention, above-mentioned power plug can also comprise zero line power plug 116 (referring to Fig. 5), be that above-mentioned zero line power plug 116 has the structure identical with other power plugs 113,114,115, its connected mode is also identical.
Here, motor of the present invention can also comprise positioning head 118, and positioning head 118 can be located PCB 200 exactly.
In the present invention, stator 110 is positioned at the inside of molded section 130, therefore is difficult to the aligned in position of PCB 200 and stator 110.Thereby, the position of very difficult alignment rotor 310 or rotor assembly 300 and PCB200.
Usually, each control device that is used for drive motors is positioned at PCB 200.Particularly, above-mentioned PCB 200 is provided with Hall element (not shown) that the position of rotor 310 is carried out perception etc.Described Hall element changes the position of coming the perception rotor 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.
Therefore, in order to make the accurately position of perception rotor 310 of Hall element, the relative position of itself and rotor is extremely important.Specifically, it is extremely important with respect to the relative position of stator 110 or rotor 310 to be provided with the PCB 200 of Hall element.Therefore, PCB 200 is combined on the accurate position of molded section 130 exactly.
Certainly, the PCB200 position determines and can realize with combining of the following mute latch that will illustrate by above-mentioned power plug 113,114,115,116.But when forming coil as shown in Figure 2, power plug 113,114,115 concentrates on a side, and zero line plug 116 can be formed on its opposite side.In this case, if only utilize the position of above-mentioned power plug or mute latch decision PCB, then be easy to generate error.And, when connecting, in welding process, also can produce error by welding.
Therefore, should determine the position of PCB earlier, and then carry out this weld job.For this reason, motor of the present invention also comprises positioning head 118.In order to determine the binding site of PCB 200 more exactly, a plurality of positioning heads 118 can be set.In the embodiment of Fig. 2, be provided with two positioning heads 118.These positioning heads 118 can also play a part to make PCB200 to combine with molded section 130 in the binding site of determining PCB.Preferably, above-mentioned positioning head 118 is formed on relative position, and determines its position according to the position of power plug.
In addition, above-mentioned positioning head 118 also can form with insulator 121.That is, when forming insulator 121, form positioning head 118.Because positioning head 118 combines (see figure 1) with location notch 221 or location notch on being formed at PCB, therefore, positioning head 118 is exposed at molded section 130 outsides.
In addition, above-mentioned PCB and 118 non-conductive connections of positioning head.That is, do not form circuit at location notch 221 places.PCB combines with positioning head 118 earlier, carries out operations such as soldering then.Positioning head 118 is inlayed securely with location notch 221 and is combined.
Above-mentioned molded section 130 and PCB 200 in conjunction with the time, keep certain intervals between the two.This is because can form protuberance after inserting electronic component on the bottom surface of PCB 200.Therefore, PCB 200 directly is not installed on the top open surface 133 that is formed at molded section 130 tops.
As shown in Figure 1, the leg or the circuit structure of electronic component etc. is not set at the close outer peripheral face place of PCB 200, therefore a plurality of stage portion 134 is set, so that form the interval between PCB 200 and the open surface 133.Preferably, stage portion 134 is formed at the close outer peripheral face place of open surface 133.
In addition, above-mentioned stage portion 134 should be formed with the plane with certain area.Like this, when contacting with the bottom surface generating plane of PCB 200 on the plane of stage portion 134, can be more fixing PCB200.In addition, preferably, above-mentioned each plug 113,114,115,116 and positioning convex are formed on the above-mentioned stage portion 134.Thereby molded section 130 can more stably be combined with PCB 200, and binding site is more accurate.
Below with reference to Fig. 1 the structure of rotor assembly of the present invention is elaborated.
Described rotor assembly 300 comprises rotor 310 and rotating shaft 313, and rotor 310 comprises rotor core 312.Rotor 310 can have multiple shape, can be the permanent magnet rotor 310 that permanent magnet 311 is installed along the periphery shown in Figure 1.In addition, at the central part of above-mentioned rotor core 312 rotating shaft 313 is set, rotating shaft 313 runs through rotor core 312 usually.
In addition, above-mentioned rotor assembly 300 rotatably is formed on the inside of stator assembly 100.In this case, motor of the present invention can be called inner rotor type motor.At this moment, in stator core 111, be formed with the space that is used to be provided with rotor.
In addition, also be provided with the bearing 314 that rotatably supports above-mentioned rotor assembly 300, described bearing 314 combines with following upper bracket that will illustrate 410 or lower bracket 420, and rotatably the support rotor assembly 300.Simultaneously, above-mentioned bearing 314 combines with upper bracket 410 or lower bracket 420, prevents that rotor assembly 300 from moving on rotating shaft 313.
Below with reference to Fig. 1 the manufacture method of motor of the present invention is elaborated.
At first, make stator assembly 100, rotor assembly 300 and PCB200.After producing above-mentioned each member, begin to carry out the assembling of motor.
At first, on the top of stator assembly 100 PCB 200 is installed.That is, PCB 200 is installed by the opening portion, top 131 of stator assembly 100.The size of opening portion, top 131 and shape are corresponding with size and the shape of PCB 200, that is: opening portion 131 is the structures that are used in conjunction with PCB, if PCB is less, then opening portion 131 is also correspondingly less.
In addition, be formed with through hole 233, so that rotating shaft 313 is installed at the center of PCB 200.Described through hole 233 has the size of not conflicting with PCB 200 and can allow bearing 314 pass through and gets final product when rotating shaft 313 vibrations.That is, because rotor assembly 300 does not pass through the top of PCB 200, therefore size, the particularly internal diameter of above-mentioned through hole 233 are less than the size of rotor 310, particularly external diameter.
After stator assembly 100 and the PCB200 combination, upper bracket 410 combines with stator assembly 100, closed upper portion opening portion 131.But the sealing here only is meant isolates the inside and outside of stator assembly 100, is not to seal fully.
After mutually combining between stator assembly 100, PCB200 and the upper bracket 410, insert rotor assembly 300 by the lower opening part 132 of stator assembly 100.That is,, therefore can not conflict mutually because the direction of the direction of PCB200 combination and rotor assembly 300 combinations is opposite.Thereby can prevent from when rotor assembly 300 is installed, to damage PCB.
In addition, behind the insertion rotor assembly 300,, use the lower opening part 132 of lower bracket 420 sealing stator assemblies 100 then by the position of bearing 314 definite rotor assemblies 300.In addition, move in the axial direction, encircle (E-ring) at the end insertion E of rotating shaft 313 and position in order to prevent rotor assembly 300.
In addition, as required, can also on upper bracket 410 and lower bracket 420, install make by materials such as rubber, prevent the pad 510,520 that vibrates.
In the present invention, because PCB200 is different with the bonding position of rotor assembly 300, assembling motor at once after therefore the permanent magnet 311 of rotor 310 being magnetized.That is, behind installation PCB200 and the stator assembly 100, permanent magnet is magnetized, can be installed in rotor assembly on the stator assembly 100 then, finish the assembling of motor at once.Therefore, after permanent magnet magnetized, can simplify the subsequent handling of assembling motor to greatest extent, can prevent from advance to adhere to foreign matter etc. on the permanent magnet 310, and can prevent after permanent magnet is magnetized, install rotor assembly 300 in conjunction with the time damage PCB200.
In addition since behind assembling PCB200 assemble rotor assembly 300 again, therefore PCB and stator assembly can be installed easily.This be because, if earlier in conjunction with rotor assembly 300 and stator assembly 100, and then PCB200 is installed, mean that then the subsequent handling behind the magnetizing increases; The influence of the permanent magnet 310 after owing to magnetized, breakage may appear in PCB200.
Below above-mentioned mute latch 117 is elaborated.
As previously mentioned, motor of the present invention comprises the power plug 113,114,115 and 116 that is connected and is connected with external power source with the coil conduction.Simultaneously can also comprise the mute latch 117 identical with above-mentioned power plug shape.Here, mute latch 117 is not connected with coil 119 conductions.Certainly, also can be connected as required with coil 119 conductions.Mute latch 117 stably is combined on the stator assembly 100 PCB200 with several power plugs.In addition, identical with each power plug, mute latch 117 also can be connected with the PCB200 conduction.At this moment, mute latch 117 makes stator core 111 ground connection.That is, be connected, form ground structure by PCB200 and connector 230 with stator core 111 conductions.
Below with reference to Fig. 6 above-mentioned ground structure is elaborated.
At first, identical with other power plugs 113,114,115,116, mute latch 117 runs through insulator 112.An end is positioned at the inside of molded section 130 simultaneously, and the other end is exposed at the outside of molded section 130.One end of mute latch 117 is connected with stator core 111 conductions.This conduction connected mode has a variety of, for example, can utilize electric wire, makes the end conduction of electric wire be connected an end of mute latch 117, and the other end soldering that makes electric wire is on stator core 111.
But,, torsion spring 600 can be set for conduction connection more easily.The other end of mute latch 117 is inserted at the center of described torsion spring 600, and extend to top at the two ends at torsion spring center, contacts 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, torsion spring 600 is formed by electric conducting material.
In addition, in order to allow the two ends of torsion spring 600 more stably keep conduction to be connected, can on stator core 111, form insertion section 160 with stator core 111.The two ends of torsion spring 600 are inserted in the insertion section 160, can prevent effectively that torsion spring 600 other end from mute latch 117 when molded section 130 forms breaks away from.Certainly, the two ends of torsion spring are inserted in after strain in the insertion section 610, can keep the conduction contact by elastic force.
In addition, break away from, make the two ends of torsion spring 600 run through insertion section 160 fully, and make the part that runs through have warp architecture in order to prevent torsion spring 600 better.Like this, no matter molded section 130 which side of stator 110 to formation, can both prevent that torsion spring breaks away from.
Said stator iron core 111 is connected with torsion spring 600 conductions by said structure, and torsion spring is connected with mute latch 117 conductions, therefore can form the ground structure of stator core 111.In addition, can as required an end of mute latch 117 conduction be connected on the PCB200,, form ground structure by being formed on circuit structure and the connector (with reference to Fig. 7) on the PCB.In Fig. 5,5 connector connecting portions 240 that are formed on the PCB have been showed; In Fig. 7, showed the connector 230 that is formed with 5 electric wire flutings 232.That is, above-mentioned 5 connector connecting portions and electric wire fluting is respectively applied for and constitutes u, v, w live wire, zero line and ground configurations.
Therefore, motor of the present invention can easily form grounding construction by mute latch 117 and connector 230.
The integrated structure of electric machine support of the present invention and support and molded section 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, be made by same material.That is, though its size is possible different mutually according to the size of opening portion, top 131 and lower opening part 132, its shape can be identical, and both integrated structures with molded section 130 also can be identical.
For convenience of explanation, only upper bracket 410 and molded section and integrated structure are described below.
In motor of the present invention, upper bracket 410 is preferably made by metal material, can use such as a kind of material die in iron plate, steel plate or the stainless-steel sheet to form.
Top at PCB 200 is provided with conducting parts.That is, with the end face of the PCB conducting parts that is provided with separated by a distance, the interval of the bottom surface of conducting parts and upper bracket 410 is less.Certainly, when increasing the height of upper bracket 410, above-mentioned spacing can strengthen, but this can cause the whole height of motor to increase, and can not satisfy the miniaturization requirement of motor.Therefore preferably, upper bracket 410 is not higher than the end face of molded section 130.
Central authorities in upper bracket 410 are formed with the bearing resettlement section 450 that holds bearing 314.That is, bearing 314 is set in bearing resettlement section 450, rotor assembly 300 is rotatably supported.Make mobile be restricted of rotor assembly 300 on rotating shaft 313 directions in addition.
Along with the rotation of rotor assembly 300 can produce vibration, this vibration passes to bearing resettlement section 450 by bearing 314.Thereby can make upper bracket 410 produce vibration, this vibration can produce noise.This is because upper bracket 410 is made by materials such as metallic plates, is easy to generate vibrations, makes a noise.
Therefore, in motor of the present invention, in order to reduce above-mentioned vibration and noise, upper bracket 410 should have bigger rigidity.But compare with thickness, raising rigidity by increase upper bracket 410, it is better to improve rigidity by structures such as formation ribs 420.Adopt rib 420 not only can keep lighter weight, and can improve rigidity, reduction vibration and noise.In addition, can also improve thermal diffusivity by rib 420.
Preferably, rib 420 is recessed to form downwards from the end face of upper bracket 410.This be because, if project upwards, then can increase the whole height of motor, do not satisfy the miniaturization requirement of motor.And the rib 420 by depression can reduce the distance between support 410 and the PCB end face, particularly and the distance that is installed between the conducting parts 210 of PCB 200 end faces can be littler.
Therefore conducting parts 210 can be source element (for example, the switch element that is used to switch), needs to eliminate the hidden danger of electric leakage, need make it and the upper bracket 410 that forms by electric conductor between form sufficient insulation distance.Therefore, in motor of the present invention, at the end face of upper bracket 410, only at privileged site formation each rib 420 to lower recess, and other positions do not form rib 420.For example, as shown in Figure 8, above-mentioned rib 420 can be a plurality of with radial formation.In addition, though do not illustrate, can on the periphery of certain radius, form several ribs.In addition, the rib on the periphery can radially form.That is, 420 in rib be formed on the corresponding part of conducting parts outside other positions, its shape and arrange various deformation can be arranged.Preferably, rib 420 forms simultaneously by punch process and upper bracket 410.
As Fig. 7～shown in Figure 10, conducting parts 210 can be positioned at the close outer peripheral face place of PCB200.In the case, along the circumferencial direction of upper bracket 410, rib 420 is not set in the special angle scope.This special angle scope is determined according to conducting parts 210 occupied sector regions.Here, the part that rib is not set on the upper bracket 410 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 corresponding positions.That is, when upper bracket 410 is combined in molded section 130, planar portions 460 is positioned at and conducting parts 210 corresponding positions.
For this reason, as shown in Figure 7, in motor of the present invention,, upper bracket is provided with location division 231,430 for only being combined with molded section 130 on ad-hoc location.That is, described location division 231,430 lays respectively on upper bracket 410 and the molded section 130, makes 210 of planar portions 460 and conducting parts at ad-hoc location, i.e. both corresponding position combinations.
Described location division 231,430 can have corresponding shape on upper bracket 410 and molded section 130.For example, as shown in Figure 7, on the opening portion, top 131 of above-mentioned molded section, when radially forming outstanding projection 231, on the peripheral surface of upper bracket, at the groove 430 that radially forms the projection inserted 231 of cutting.Certainly, also can be arranged on projection 231 on the upper bracket 410, groove 430 is arranged on the molded section 130.
In addition, motor of the present invention can also comprise the connector 230 that combines, is used to connect external power source with molded section 130 and PCB 200.One end of described 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, be formed with the connector joint portion 135 that combines with connector 230 on the top of molded section 130.Described connector joint portion 135 can form by a part of cutting molded section 130 tops.Therefore, the shaped upper part of the shaped upper part of connector 230 and molded section 130 particularly is formed with identical being advisable of shaped upper part of the molded section 130 of opening portion.
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 is because the location division structure that to be the top that makes molded section 130 only combine at ad-hoc location with upper bracket, so the operator need know its ad-hoc location in advance is so that assemble more easily.At length, in assembling process,, be not easy to know the ad-hoc location on molded section top 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 is set, then can easily know the ad-hoc location on molded section top by connector 230 on connector 230.
Below with reference to Fig. 9 and Figure 10 the combined structure of molded section 130 and upper bracket 410 is elaborated.
Be formed with opening portion, described top 131 on the top of motor molded section 130 of the present invention.That is, stator assembly 100 is by opening portion, top 131, upper bracket 410 closed upper portion opening portions 131.Here, identical with common motor, upper bracket 410 brute forces are pressed in the opening portion 131.But in the case, moisture might enter in the motor by opening portion 131.In order to prevent that moisture from entering, need between molded section 130 and upper bracket 410, form waterproof construction.
For this reason, motor of the present invention, its opening portion, top 131 have internal diameter mutually different, form the inboard inwall 136 and the outside inwall 137 of step and planar portions 138 each other.Described planar portions 138 is connected 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, and the part of planar portions 138 is formed by the upper end of inboard inwall 136.
Described 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 less than the internal diameter of the outside inwall 137 of the opening portion 131 of molded section 130.Certainly, the external diameter of upper bracket 410 is greater than the internal diameter of inboard inwall 136 of the opening portion 131 of molded section 130.
The part of upper bracket 410 end 441 diametrically is installed on the planar portions 138.Here, because the external diameter of upper bracket 410 less than the internal diameter of outside inwall 137, therefore, forms certain clearance d between end 441 on support 410 radial directions and outside inwall 137.In addition,, in described gap d, can inject resin, form resin piece though do not illustrate.
Above-mentioned resin piece can prevent that moisture from entering into inside by described gap d when being used in conjunction with molded section 130 and support 410.Therefore, satisfying under the situation of above-mentioned condition, described resin piece can be made of a variety of materials, and for example, can be made by epoxy resin or silica gel.
In addition, for the resin of application q.s in described gap d, in the periphery of planar portions 138, be formed with groove 139 along circumferencial direction.That is, can pass through groove 139, form resin piece with thickness greater than support 410.Thereby can corresponding to the degree of depth of groove 139 and width fully the application resin, improve water resistance and binding ability.Certainly, can also prevent that resin is excessive, bad order occur or in conjunction with bad problem.
As shown in figure 10, the width of above-mentioned groove 139 is advisable greater than the width in above-mentioned gap.This is because in this case, resin not only can be coated with the thickness part of the radial extremity 441 that is contained in support 410 but also can be coated with the certain position that is contained in the bottom surface.Thereby can increase and the contact area of upper bracket 410 or opening portion, top 131, further improve water resistance and binding ability with resin piece.
As mentioned above, motor of the present invention can also comprise connector 230.Above-mentioned connector 230 is combined on the PCB200 that is fixed in molded section 130 inside, is used for external power source is switched to PCB200.Described connector 230 combines with the connector joint portion 135 that is formed on molded section 130 tops.Therefore, identical being advisable of shape of the shaped upper part of connector 230 and the appropriate section on molded section 130 tops.Therefore, support 410 can allow connector 230 more firmly be fixed on the molded section 130 not only with molded section 130 but also combine with connector 230.Certainly, described support location division (such as the projection 231 that is formed on the connector) can also have other shape.
In addition, motor of the present invention not only is formed with opening portion, top 131, can also forms lower opening part 132 on its molded section 130.Here, lower opening part 132 can be identical with above-mentioned structure with the combined structure of lower bracket 420.But, if lower bracket is not soaked into the possibility of moisture, then need not be necessarily identical with said structure.Certainly, if there is the possibility of soaking into moisture in lower bracket 420, then can be applied to said structure on the lower bracket 420.
The opening portion 131,132 of motor molded section of the present invention and support 410,420 can also have powerful mosaic texture or powerful pressing structure (below, the convenience on illustrating is called " mechanicalness integrated structure ") when having above-mentioned waterproof construction.That is, above-mentioned rack mechanical be combined in the opening portion after, carry out the application of above-mentioned resin piece.
This mechanicalness integrated structure can make above-mentioned gap d be formed uniformly along the circumferencial direction of support, can prevent that support from moving simultaneously when the application resin piece.
Here, above-mentioned mechanicalness integrated structure can be the joggling part 440 that inserts inboard inwall 136.Described joggling part 440 can be bent downwardly and be formed by the position near the end that directly makes progress of support 410,420.That is, described joggling part 440 is inserted in the inboard inwall 136, tentatively support is fixed on the molded section 130.Joggling part 440 forms along the circumferencial direction of support 410,420, can improve the rigidity of support.
Claims (8)
1. motor comprises: by the stator core with hollow, be positioned on the described stator core and have the insulator of the coil that is used to reel stator, encircle the stator assembly that the molded section of described stator core and insulator forms; Be installed in the PCB and the rotor that can be rotatably set in stator assembly inside on described stator assembly top, it is characterized in that: also comprise being arranged on the described insulator, when forming described molded section, be exposed to the top of molded section, be used to determine the positioning head of PCB position.
2. motor according to claim 1 is characterized in that: be formed with on described PCB and the corresponding location notch of described positioning head.
3. motor according to claim 1 and 2 is characterized in that: described positioning head is at least one.
4. motor according to claim 3 is characterized in that: described positioning head is integrally formed on the described insulator.
5. motor according to claim 1 is characterized in that: described molded section is formed by the BMC molding.
6. motor according to claim 1 is characterized in that: also comprise being arranged on the described insulator, be exposed to the top of molded section and the plug that is connected with described PCB conduction when forming described molded section.
7. motor according to claim 6 is characterized in that: described plug runs through described insulator.
8. motor according to claim 7 is characterized in that: the other end of described plug and described coil conduction are connected and are positioned at the inside of described molded section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100529715A CN101572459A (en) | 2008-05-04 | 2008-05-04 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100529715A CN101572459A (en) | 2008-05-04 | 2008-05-04 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101572459A true CN101572459A (en) | 2009-11-04 |
Family
ID=41231720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100529715A Pending CN101572459A (en) | 2008-05-04 | 2008-05-04 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101572459A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516164A (en) * | 2012-06-28 | 2014-01-15 | 罗伯特·博世有限公司 | Power tool |
| CN103731985A (en) * | 2013-12-31 | 2014-04-16 | 张家港华捷电子有限公司 | Motor control device |
| CN112217347A (en) * | 2019-07-11 | 2021-01-12 | 捷温有限责任公司 | Electric motor and electric device comprising such a motor |
-
2008
- 2008-05-04 CN CNA2008100529715A patent/CN101572459A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516164A (en) * | 2012-06-28 | 2014-01-15 | 罗伯特·博世有限公司 | Power tool |
| CN103516164B (en) * | 2012-06-28 | 2017-07-21 | 罗伯特·博世有限公司 | Electric tools |
| CN103731985A (en) * | 2013-12-31 | 2014-04-16 | 张家港华捷电子有限公司 | Motor control device |
| CN103731985B (en) * | 2013-12-31 | 2016-05-18 | 张家港华捷电子有限公司 | The control device of motor |
| CN112217347A (en) * | 2019-07-11 | 2021-01-12 | 捷温有限责任公司 | Electric motor and electric device comprising such a motor |
| US12113407B2 (en) | 2019-07-11 | 2024-10-08 | Gentherm Gmbh | Motor and electric device comprising such motor |
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Open date: 20091104 |