CN101588096A - Motor - Google Patents
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- CN101588096A CN101588096A CNA2008100532084A CN200810053208A CN101588096A CN 101588096 A CN101588096 A CN 101588096A CN A2008100532084 A CNA2008100532084 A CN A2008100532084A CN 200810053208 A CN200810053208 A CN 200810053208A CN 101588096 A CN101588096 A CN 101588096A
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Abstract
The invention discloses a motor comprising a stator assembly, an opening part, a bracket and resins. The stator assembly is integrally formed by a stator and a moulding part surrounding a stator iron core and an insulator; the opening part is communicated with outside of the stator assembly; the opening part is connected with the upper part of the moulding part through a plane part; the outside diameter of the bracket is less than the inside diameter of the outside inner wall; a tail end along a radius direction is mounted on the plane part and keeps a certain gap with the outside inner wall to enclose the opening part; and the resins are coated in the gap. The invention has the advantages that the motor is a stator moulded-type motor, and the printed circuit board is accurately combined with the stator assembly to prevent coils from being damaged; the bracket and the moulding part are combined with each other more firmly via mechanical and chemical combination so as to prevent the bracket from being separated as a result of vibration during the operation process of the motor and avoid electric leakage caused by water penetration to the utmost extent. The motor is easy to manufacture and convenient to assemble, thereby greatly improving the production efficiency.
Description
Technical field
The present invention relates to a kind of motor, particularly relate to a kind of efficient height, life-span length and the convenient micro-machine that uses.
Background technology
Usually, motor is by the electromagnetic action between stator and the rotor, makes the motor rotation, and the device of revolving force biography to the outside; The revolving force of described rotor is to drive its load by rotating shaft.
In addition, described stator generally includes stator core and the coil that is wound on described stator core; Described stator core is by insulator or roll and described coil insulation.
In said structure, described stator and rotor have at least a part to be housed in the support that forms the motor outward appearance, owing to be subjected to the variation or the vibration of external environment condition, coil might sustain damage.Simultaneously, coil or stator core also have the hidden danger of electric leakage.
In order to address the above problem, generally adopt now stator core, coil and insulator be assembled into stator after, stator is molded as an integral body, manufacture stator assembly.This for convenience of explanation motor calls stator moulded motor to this motor in the following description.
In addition, need to be provided with the control device of drive motors usually on motor, described drive unit can be arranged in the motor, also drive unit can be arranged in the product that uses motor.
This control device for the motor that is provided with printed circuit board (PCB) in the motor, needs lead and connects when being formed on substrate (printed circuit board (PCB)) and going up between the coil of molding piece inside and printed circuit board (PCB), be difficult to realize stator moulded motor.
In addition, stator moulded motor is because operation is many, and assembling is difficult, and the probability that defective products occurs can be very high.
Summary of the invention
The desired technical problem of the present invention is, overcomes the shortcoming of prior art, provides a kind of easy to manufacture, easy to assembly, the motor that can enhance productivity; Be provided with the stator moulded motor of printed circuit board (PCB) in its motor.
Another object of the present invention is to: provide a kind of and printed circuit board (PCB) can be more prone to, stable bond is at the accurate locational motor of stator assembly.
Another object of the present invention is to: provide a kind of moisture that prevents to soak into, assemble firm motor.
The technical solution adopted in the present invention is: motor of the present invention comprises stator assembly, opening portion, support and resin object; Described stator assembly is positioned at the stator of the insulator of the coil that is used on the stator core to reel by the stator core of hollow, and the molded section of encircling described stator core and described insulator is integrally formed; The inboard inwall that described opening portion and stator assembly external communications, its internal diameter are different mutually and the upper end of outside inwall form ledge structure, are connected with the top of described molded section by planar portions; Described support external diameter is less than the internal diameter of described outside inwall, and it is installed on the described planar portions along the end on the radial direction, and keeps certain interval with described outside inwall, seals described opening portion; Described resin object is coated with and is contained in the described gap.
Described printed circuit board (PCB) is combined in described molded section inside by described opening portion.
Described resin object is combined as a whole described support and described molded section, and resin object is also waterproof.
Described resin object is epoxy resin or silica gel.
Described support is terminal inboard along radial direction, and warpage ground is formed with the joggling part that inserts described inboard inwall downwards.
The described inboard inwall of the powerful embedding of described joggling part.
This motor also includes lower bracket; Described lower bracket is formed on the bottom of described molded section, is communicated with the lower opening part of described stator assembly inside and outside, seals described lower opening part.
Described rotor assembly is combined in described molded section inside by described lower opening part.
Described molded section is to be formed by the BMC molding.
External angle in described planar portions is formed with groove along circumferencial direction.
The width of described groove is greater than the width in described gap.
This motor also includes connector; Described connector combines with the printed circuit board (PCB) that is fixed on described molded section inside, and external power source is introduced described printed circuit board (PCB) by connector, is formed with the connector connecting portion that combines with described connector on the top of described molded section.
The shape of the shaped upper part of described connector and described molded section opening portion is suitable.
The invention has the beneficial effects as follows: the 1st, the present invention can provide and make simple, the small and exquisite motor of profile.
The 2nd, the present invention encircles stator by the molded section of insulating material, therefore can provide motor safe in utilization, easy and simple to handle.
The 3rd, the present invention is owing to accurately be combined in printed circuit board (PCB) on the stator assembly, can be when forming molded section, prevent that coil is impaired, the electrical connection motor reliable is provided simultaneously.
The 4th, the present invention can prevent to make and use in the bad phenomenon that produces, the motor of confidence level is provided, and can prolongs the useful life of motor.
The 5th, in the process of assembling motor,, can simplify the subsequent handling of assembling motor to greatest extent owing to magnetize in the operation after, make assembling simpler.
The 6th, in the process of assembling motor,, so can reduce to install conflicting between rotor assembly and the printed circuit board (PCB) because the bonding position of rotor assembly is different with the bonding position of printed circuit board (PCB).
The 7th, make the combination more firmly of support and molded section by mechanicalness combination and chemical combination, thereby can prevent that motor use medium-height trestle from taking place owing to vibrating situation about breaking away from, and can avoid effectively preventing the generation of accident because moisture soaks into the electric leakage of initiation to greatest extent.
Description of drawings
Fig. 1 is a motor exploded perspective schematic diagram of the present invention;
Fig. 2 is the stator schematic perspective view of Fig. 1;
Fig. 3 is the schematic perspective view that the stator assembly of Fig. 1 combines with printed circuit board (PCB);
Fig. 4 is the I-I line generalized section of Fig. 2;
Fig. 5 is the floor map of Fig. 3;
Fig. 6 is the stationary part enlarged diagram of Fig. 3;
Fig. 7 is motor schematic diagram of the present invention and connector part enlarged diagram;
Fig. 8 is a motor floor map of the present invention;
Fig. 9 is motor schematic diagram of the present invention and upper bracket and molded section bound fraction enlarged diagram;
Figure 10 is a motor schematic diagram of the present invention, and upper bracket and molded section bound fraction generalized section.
Among the figure:
100: stator assembly 110: stator
113,114,115: electric power connecting terminal 117: mute inserting terminal
118: alignment pin 119: coil
130: molded section 131,132: molded section 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
Below, with embodiment the present invention is described in further detail in conjunction with the accompanying drawings:
Fig. 1 is a motor exploded perspective schematic diagram of the present invention.
As shown in Figure 1, motor of the present invention comprises stator assembly 100, rotor assembly 300 and printed circuit board (PCB) 200.That is, described rotor assembly 300 rotates with respect to described stator assembly 100; Described printed circuit board (PCB) is controlled described rotor assembly 300 rotations.
Described stator assembly 100 comprises stator 110 and molded section 130; The resin material of material for insulating that described molded section is selected preferably formed by BMC (Bulk Molding compound) molding.
As shown in Figure 2, described stator 110 comprises stator core 111, insulator 112 and stator coil 119 (below be called " coil ").
Described stator core 111 is usually by the stator magnet chip, and promptly iron plate is formed by stacking (not shown), is formed with a lot of pole shoes, reels to form coil 119 on each pole shoe.To form state of insulation between described each pole shoe and the stator coil 119 easily in order making, and, to be provided with insulator 112 for the described coil 119 of reeling easily.
Described insulator 112 is inserted in the upper and lower of described stator core 111 respectively, also can be with the injection moulding of stator core 111 embeddings lining, and insulator 112 is integrally formed with stator core 111.That is, when by the injection moulding of embedding lining, when integrally formed stator core 111 and insulator 112, both form a stator assembly 100, therefore are difficult to the two to have the advantage that picks and places easily from physically separating when assembling.When insulator 112 is made with form independently, insulator 112 be combined in stator core 111 in conjunction with comparing, the latter's molded section generation type is more prone to.
As shown in Figure 2, described insulator 112 is that the embedding lining is injection-moulded on the described stator core 111, and the two is integrally formed.
In addition, coil 119 is wound on the stator core 111 by described insulator 112; Therefore, described coil 119 should have the structure that is connected with external power source.That is, a kind of structure need be set, coil coiling starting point and end point, promptly the end 121 of coil 119 is connected with external power source.
Though this has nothing to do with described coil 119 connection single phase poaer supplies or three phase mains, for convenience of explanation, existing the situation to described coil connection three phase mains describes.That is, the situation that turns on u, v, w phase power supply with described coil is an example, describes.This is the knowledge of generally using for the mode by device drive motors such as transducers, therefore omits its detailed description.As shown in Figure 2, coil on the stator 110 and u, v, w power supply connection mutually.
Motor of the present invention is particularly suitable for the motor that stator 110 is positioned at molded section 130 inside.That is, the shape of molded section 130 can be encircled described stator 110 from the outside, and described stator 110 and molded section 130 form one, become a stator assembly 100.
Part in the described molded section 130 is the motor profile; Described molded section is made of resin material, 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, with external isolation, can effectively prevent coil damage and electric leakage.
In addition, described molded section 130 is encircled stator 110, but is not suitable for encircling in the described stator core 111 and rotor 310 face 120 in opposite directions.Because, between described 120 and rotor outer peripheral face, be formed with the space, from the angle of efficiency of motor or noise, vibration, described space will maintain less state.Thereby suitable allowing kept original state by the face 120 of die-cut formation.
Described coil 119 need be electrically connected with external power source.Motor of the present invention includes inserting terminal.Described latch can have multiple structure by the type of described coil 119 energized.Such as, when connecting u, v, w three phase mains, need 3 inserting terminals at least.
As described inserting terminal, as shown in Figure 2, the electric power connecting terminal that is electrically connected with u, v, each phase coil of w is 113,114,115.
In motor of the present invention, when stator 110 is encircled by molded section 130, be difficult to guarantee that the end portion of coil is exposed at the outside of molded section 130.Because, the intensity of coil self a little less than, coil end might be damaged when forming molded section 130, coil also may be embedded in molded section 130 inside fully.Therefore, earlier the end 121 of coil 119 is connected on the described electric power connecting terminal 113,114,115, makes described electric power connecting terminal be exposed at molded section 130 outsides and be advisable.
Described inserting terminal, particularly each electric power connecting terminal can be that metal material is made into club shaped structure.In addition, described electric power connecting terminal and insulator 112 are preferably integrally formed.That is, when making described insulator 112 by molding, described each electric power connecting terminal embedding lining makes the two form one on described insulator 112; Particularly, described each electric power connecting terminal runs through described insulator 112 and is advisable.
In the lower end of described electric power connecting terminal 113,114,115, promptly electric power connecting terminal one end is electrically connected with the end of coil 119.Specifically be, coil can be wound on an end of described electric power connecting terminal after, weld.
In addition, for an end that prevents described electric power connecting terminal is damaged with being electrically connected of coil end part, suitable molded section 130 inside that all are positioned at of an end of described each power plug.
As shown in Figure 4, an end of described electric power connecting terminal is with after described coil end 121 parts are electrically connected, and isolated not being exposed to the outside and being advisable by molded section 130.In addition, the upper end of described electric power connecting terminal 113,114,115, promptly the other end is advisable with the outside that is exposed to described molded section 130.Described electric power connecting terminal has full intensity, can not sustain damage when forming molded section 130 guaranteeing.
After the end 121 of described coil 119 is connected electrically in an end of electric power connecting terminal, and be positioned at molded section 130 inside, can be exposed to the outside; The other end of described electric power connecting terminal is exposed at the outside of molded section 130, is electrically connected with external power source.
As shown in Figure 3 and Figure 4, the other end of described electric power connecting terminal 113,114,115 is exposed at the outside of molded section 130, that is, and and the top of molded section 130.Be formed with opening portion 131,132 respectively in the upper and lower of described molded section 130, the molded section 130 in the described stator assembly 100 combines with printed circuit board (PCB) 200 by described opening portion 131.Certainly, by different visual angles, also can call lower opening part to the opening portion, top of described molded section 130.
The electric power connecting terminal that is exposed to described molded section 130 outsides inserts in the hole 220 on the printed circuit board (PCB).Described printed circuit board (PCB) is formed with line construction, and when described electric power connecting terminal inserted described hole 220, terminal formed between the two with the hole and is electrically connected; , also can weld both combinations for more firmly.
By combining of each hole 220 on electric power connecting terminal 113,114,115 and the printed circuit board (PCB) 200, realized combining of printed circuit board (PCB) 200 and molded section 130.
Therefore, when u, v, w go up each coil end mutually and be connected with printed circuit board (PCB) 200 respectively, need the central point of each coil formation that will described each phase to be electrically connected with described printed circuit board (PCB) 200.As required, the electric power connecting terminal can also comprise zero line electric power connecting terminal 116 in the motor of the present invention; Be that described zero line electric power connecting terminal 116 has the structure identical with other electric power connecting terminals 113,114,115, its connected mode is also identical.
Motor of the present invention also includes positioning head 118; Described positioning head 118 can guarantee that printed circuit board (PCB) 200 is installed in position accurately.
Usually, each control device that is used for drive motors is positioned at printed circuit board (PCB) 200; Particularly on described printed circuit board (PCB) 200, be provided with Hall element (not shown) that the position of rotor 310 is carried out perception etc.Described Hall element is when permanent magnet 311 rotations of rotor 310, by the variation of the perception magnetic line of force, the position of perception rotor.That is,, motor is controlled based on the position of rotor.
Described Hall element is for the accurate position of perception rotor 310, and the relative position of itself and rotor is extremely important.In detail, it is extremely important with respect to the relative position of described stator 110 or rotor 310 to be provided with the printed circuit board (PCB) 200 of Hall element.Therefore, it is just extremely important described printed circuit board (PCB) 200 to be combined on the accurate position of described molded section 130 exactly.
Certainly, the determining positions of described printed circuit board (PCB) 200 can be combined with mute inserting terminal that the back will be narrated by aforesaid electric power connecting terminal 113,114,115,116 and realize.But when the coil that forms as shown in Figure 2, electric power connecting terminal 113,114,115 gathers in side formation, and zero line electric power connecting terminal 116 can be formed on its opposition side.At this moment, if only utilize the position of described electric power connecting terminal or mute inserting terminal decision printed circuit board (PCB), then can there be the hidden danger of error.And, when connecting by welding, also error can take place in welding process.
At first, operation such as should determine to weld behind the position of printed circuit board (PCB) earlier, for this reason, motor of the present invention also includes alignment pin 118 again; Because, just be difficult to the printed circuit board (PCB) accurate binding site of decision with respect to stator as long as after encircling the stator that comprises insulator with molded section.In order to determine the binding site of printed circuit board (PCB) 200 more exactly, stator is provided with a plurality of alignment pins 118.Can be fixed on printed circuit board (PCB) exactly on the accurate position of stator by described alignment pin 118.As shown in Figure 2, be formed with two alignment pins 118 in this embodiment; Alignment pin 118 can also play the effect that printed circuit board (PCB) 200 combines with molded section 130 in the binding site of decision printed circuit board (PCB).Described alignment pin 118 is preferably formed in the position of mutual correspondence, simultaneously also should be according to the position of the determining positions alignment pin of electric power connecting terminal.
In addition, described alignment pin 118 and described insulator 121 integrally formed being advisable.That is form described alignment pin 118 when, being preferably in formation insulator 121 simultaneously.In addition, the position corresponding with described alignment pin at described printed circuit board (PCB) is formed with location notch, because described alignment pin 118 combines with the location notch 221 or the location hole that are formed on printed circuit board (PCB), therefore, described alignment pin 118 should be exposed to described molded section 130 outsides and is advisable.
In addition, described printed circuit board (PCB) is connected with described positioning head 118 insulation.That is, on described location notch 221, do not form circuit.Described printed circuit board (PCB) with after described positioning head combines, carries out operations such as soldering earlier.Thereby described positioning head and described location notch 221 brute forces are combined into suitable with inlaying.
Described molded section 130 and printed circuit board (PCB) 200 in conjunction with the time, suitable keep certain interval between the two.Because, the leg ledge of electronic component is arranged in the bottom surface of printed circuit board (PCB) 200.Therefore, on the open surface 133 that forms on the opening portion, molded section 130 top 131, be not suitable for direct fitting printed circuit board 200.
At the exterior angle of printed circuit board (PCB) 200, the leg or the circuit structure of above-mentioned electronic component etc. are not set, formation is spaced apart suitable between printed circuit board (PCB) 200 and the above-mentioned open surface 133 so that allow therefore to form stage portion 134.Certainly, be advisable in above-mentioned stage portion 134 exterior angle that is formed on above-mentioned open surface 133.
At the outward flange of described open surface 133, partly be formed with boss portion 134, be formed with when making fitting printed circuit board 200 and between the described open surface 133 at interval.
In addition, described boss portion 134 is advisable with the plane with certain area.Because, when the plane of described boss portion 134 contacts with the bottom surface generating plane of described printed circuit board (PCB) 200, can more firmly fix described printed circuit board (PCB).Described each electric power connecting terminal 113,114,115,116, and positioning convex simultaneously is formed on the described boss portion 134 and is advisable.Described molded section 130 can more stably combine with printed circuit board (PCB) 200, and its binding site also can be very accurate.
Below, with reference to Fig. 1 rotor assembly of the present invention is elaborated.
Described rotor assembly 300 comprises rotor 310 and rotating shaft 313; Described rotor 310 comprises rotor core 312.Described 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 described rotor core 312, be provided with rotating shaft 313; Common described rotating shaft 313 runs through described rotor core 312.
In addition, described rotor assembly 300 rotatably is formed on the inside of described stator assembly 100.Motor of the present invention can be called inner rotor type motor.At this moment, stator core 111 inside are formed with the space of configurable rotor.
In addition, rotor assembly 300 also comprises having the bearing 314 that rotatably supports described rotor assembly 300.Described bearing 314 combines with upper bracket 410 or lower bracket 420 that the back will be narrated, rotatably supports described rotor assembly.Simultaneously, described bearing 314 combines with described upper bracket 410 or lower bracket 420, prevents that described rotor assembly 300 from moving on rotating shaft 313.
Below, in conjunction with Fig. 1 motor manufacturing method of the present invention is elaborated.
The manufacture method of motor of the present invention comprises: form molded section on stator, form the 1st stage of stator assembly; On described stator assembly top, the 2nd stage of fitting printed circuit board; Seal the 3rd stage of opening portion, described stator assembly top by upper bracket; Rotor assembly is inserted into the 4th stage of described stator assembly bottom; Seal the 5th stage of described stator assembly lower opening part by lower bracket.
Before described the 4th stage, also include the stage that rotor is combined on the rotating shaft, forms rotor assembly; Between described the 3rd stage and the 4th stage, the permanent magnet that also includes to described rotor magnetizes the stage.
At first, form described stator assembly 100, rotor assembly 300 and printed circuit board (PCB) 200; Carry out the assembling of motor again.
On the top of stator assembly 100, printed circuit board (PCB) 200 is installed; That is, by the opening portion, top 131 of stator assembly 100, fitting printed circuit board 200.The size and the shape of the size of opening portion, described top 131 and shape and described printed circuit board (PCB) 200 correspond to suitable.That is, described opening portion 131 is the structures that are used in conjunction with printed circuit board (PCB), if printed circuit board (PCB) is little, then described opening portion 131 is also corresponding reduces.
In addition, be formed with through hole 250, be used to run through described rotating shaft 313 at described center than printed circuit board (PCB) 200; As long as described through hole 250 sizes guarantee can not clash and can allow bearing 314 by good with described printed circuit board (PCB) 200 when rotating shaft 313 vibrations.That is, because described rotor assembly does not pass through described printed circuit board (PCB) 200, therefore size, the particularly internal diameter of described through hole 250 are less than the size of described rotor 310.
After stator assembly 100 and printed circuit board (PCB) 200 combinations, upper bracket 410 combines with described stator assembly 100, seals opening portion, described top 131.But the sealing of indication here only is meant isolates the inside and outside of described stator assembly 100, is not the meaning that seals fully.
After mutually combining between stator assembly 100, printed circuit board (PCB) 200 and the upper bracket 410, again rotor assembly 300 is inserted the lower opening part 132 of described stator assembly 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.Thereby, can prevent to damage when rotor assembly 300 from combining with stator assembly 100 printed circuit board (PCB).
After inserting rotor assembly, by the position of bearing 314 decision rotor assemblies 300, again by the lower opening part 132 of lower bracket 420 sealing stator assemblies 100.In addition, in order to prevent that rotor assembly from by moving axially, inserting E ring (E-ring) end of rotating shaft 313.
In addition, as required, the pad 510,520 that is made of elastomeric material etc. is installed on described upper bracket 410 and lower bracket 420 can be prevented in conjunction with vibration.
In the present invention, because printed circuit board (PCB) 200 is different with the bonding position of rotor assembly 300, therefore to the permanent magnet 311 of rotor 310 magnetize back, assembling motor immediately.That is, behind printed circuit board (PCB) 200 and stator assembly 100, and after permanent magnet magnetized, can be combined in rotor assembly 300 on the stator assembly 100 immediately, finish the assembling of motor.
After permanent magnet magnetized, can simplify the subsequent handling of assembling motor to greatest extent, because can prevent from advance to adhere to foreign matter etc. on the described permanent magnet 311, also can prevent the rotor assembly 300 that obtains magnetizing at permanent magnet in conjunction with the time, can damage printed circuit board (PCB) 200.
In addition, stator assembly 100 and printed circuit board (PCB) 200 carry out earlier combination than stator assembly 100 and rotor assembly 300 in conjunction with easily.Because, if, mean that then the subsequent handling behind the magnetizing increases earlier in conjunction with behind rotor assembly 300 and the stator assembly 100, again in conjunction with printed circuit board (PCB) 200; The influence of the permanent magnet 310 after owing to magnetized, breakage may appear in printed circuit board (PCB) 200, reduces operating efficiency.
Below, aforesaid mute inserting terminal 117 is elaborated.
As previously mentioned, motor of the present invention comprises the electric power connecting terminal 113,114,115,116 that is electrically connected and is connected with external power source with coil.Also comprise simultaneously and the identical mute inserting terminal 117 of described electric power connecting terminal shape.Here, mute inserting terminal 117 is connected with coil 119 insulation.Certainly, also can be electrically connected as required with coil 119.
Described mute inserting terminal 117 guarantees that with several electric power connecting terminals printed circuit board (PCB) 200 stably is combined on the stator assembly 100.
In addition, identical with described each electric power connecting terminal, described mute inserting terminal 117 also can be electrically connected with printed circuit board (PCB) 200.At this moment, described mute inserting terminal 117 makes stator core 111 ground connection.That is, be electrically connected, form ground structure by described printed circuit board (PCB) 200 and connector 230 with described stator core 111.
Below, in conjunction with Fig. 6 ground structure is elaborated.
At first, identical with other electric power connecting terminals 113,114,115,116, described mute inserting terminal 117 runs through insulator 112; An end is positioned at the inside of molded section 130 simultaneously, and the other end is exposed to the outside of molded section 130.
One end of described mute inserting terminal 117 is electrically connected with stator core 111, and this electric connection mode can have a variety of.Such as, can utilize electric wire, allow an end of electric wire be connected electrically in described mute inserting terminal 117 an end, allow the soldering of the electric wire other end on described stator core 111.
But,, torsion spring 600 can be set in order to be electrically connected more easily; The central part of described torsion spring 600 is inserted in the other end of described mute inserting terminal 117, and the two ends of torsion spring central part are extended, contacted with described stator core 111 to top.That is, under state of contact, strain takes place in the two ends of described torsion spring 600, keeps contact condition under the elastic force effect.Described torsion spring 600 is selected electric conducting material for use.
In addition, in order to allow the two ends of described torsion spring 600 more stably keep being electrically connected, on described stator core 111, be formed with insertion section 160 with stator core 111.In described insertion section 160, the two ends of inserting described torsion spring 600, can prevent effectively that described torsion spring 600 other end from described mute inserting terminal 117 when molded section 130 forms breaks away from.Certainly, the two ends of described torsion spring are inserted in after strain in the insertion section 160, can keep by elastic force to electrically contact.
In addition, break away from order to prevent torsion spring 600 better, described torsion spring 600 runs through described insertion section 160 fully, and allows the part that runs through have warp architecture.This moment no matter molded section 130 by which side of described stator 110 to formation, can both prevent that torsion spring breaks away from.
Described stator core 111 is electrically connected with described torsion spring 600 by this structure, and described torsion spring is electrically connected with described mute inserting terminal 117, therefore can form the ground structure of stator core 111.In addition, can as required an end of mute inserting terminal 117 conduction be connected on the printed circuit board (PCB) 200, form ground structure by circuit structure and the described connector 230 that is formed on printed circuit board (PCB).
Fig. 5 is the floor map of Fig. 3; Fig. 7 is motor schematic diagram of the present invention and connector part enlarged diagram; As shown in Figure 5, printed circuit board (PCB) is provided with 5 connector connecting portions 240, as shown in Figure 7, shows the connector 230 that is formed with 5 electric wire flutings 232.That is, described 5 connector connecting portions and electric wire fluting are respectively applied for formation u, v, w power supply point, mid point and earth point structure.
So motor of the present invention can easily form ground structure by mute inserting terminal 117 and connector 230.
Below, to electric machine support of the present invention, and support is elaborated with combining of molded section in conjunction with Fig. 7 to Figure 10.
At first, as shown in Figure 1, shape, the material of upper bracket 410 and lower bracket 420 are identical.That is, its big I is not quite similar by the size of opening portion, top 131 and lower opening part 132, but its shape can be identical.Thereby the combination of two stands and described molded section 130 also can be identical.
For the convenience on illustrating, below only the combination of upper bracket structure 410 with described molded section described.
In motor of the present invention, upper bracket 410 suits to form by metal material is die-cut.Upper bracket can form with a certain material die in iron plate, steel plate or the stainless-steel sheet as described.
Described upper bracket 410 covers the opening portion, top 131 of molded section 130, motor internal and external isolation.That is, the side of described motor outside and the part of end face, constitute, and the remainder of described end face is made of described upper bracket 410 by described molded section 130.Certainly, the bottom surface portions of described motor outside is made of lower bracket.
Be provided with conducting parts 210 on the top of described printed circuit board (PCB) 200.That is, with the described top surface of printed circuit board conducting parts that is provided with separated by a distance, the gap ratio of described conducting parts and described upper bracket 410 bottom surfaces is less.Certainly, in the time of increasing the spacing of conducting parts and upper bracket 410 bottom surfaces, increase the height of upper bracket 410, this time interval can strengthen, but this can cause the increase of motor whole height, can not satisfy the miniaturization requirement of motor.Thereby, after described upper bracket 410 is installed in molded section 130, should not exceed the upper end of described molded section 130, its height was identical with the height of molded section 130 upper ends after preferably upper bracket 410 was installed in molded section 130.
At the central portion of described upper bracket 410, be formed with the bearing resettlement section 450 of putting bearing 314.That is, in described bearing resettlement section 450, can place bearing 314, can support rotatably with respect to stator assembly 100 rotor assembly 300.In addition, described commentaries on classics assembly 300 moving on rotating shaft 313 directions also can be restricted.
Along with described rotor assembly 300 rotations can be vibrated, and this vibration passes to bearing resettlement section 450 by described bearing 314.Thereby described upper bracket 410 also may be vibrated, and this vibration can produce noise.Because described upper bracket 410 is to be formed by metallic sheet material, is easy to generate and trembles, make a noise.
Therefore, in the motor of the present invention, upper bracket 410 is for described vibration and noise minimization, and upper bracket preferably will have very big rigidity.Can improve rigidity by the thickness that increases described upper bracket 410, if but better by structures such as formation rib (rib) 420, the meeting of raising rigidity.When the present invention utilizes described rib 420, not only can keep, and can improve rigidity, reduce vibration and noise than light weight.In addition, by using described rib 420, can also provide heat dispersion high motor.
In addition, described rib 420 is recessed to form downwards from the end face of described upper bracket 410.Because, if rib 420 projects upwards, the whole height of motor is increased, be difficult to satisfy the miniaturization requirement of motor.If described rib 420 adopts the structure of depression, the distance between then described upper bracket 410 and the described printed circuit board top surface can only diminish.Particularly and the distance that is installed between the conducting parts 210 of described printed circuit board (PCB) 200 end faces can be littler.
Described conducting parts 210 can be source element (such as, the switch element that is used to switch), and described source element is the element that electric current is arranged, and therefore needs to remove the hidden danger of electric leakage.Thereby, conducting parts 210 need and the upper bracket 410 that forms of electric conductor between be formed with sufficient insulation distance.
Therefore, in motor of the present invention, at the privileged site of upper bracket 410 end faces, form each rib 420 to lower recess, and other positions should not be formed with rib 420.That is, 420 in described rib be formed on except that with conducting parts part in opposite directions other positions be advisable its shape and arrange and can have various deformation.Simultaneously, described rib 420 is fit to form in the lump with upper bracket 410 by punch process.
As shown in Figure 8, described rib 420 can be formed with several by radial configuration.In addition, also several ribs (not shown) can be set on the circumference of certain radius; Rib on the described circumference can form by radial direction.
To shown in Figure 10, described conducting parts 210 can be positioned on the outward flange of described printed circuit board (PCB) 200 as Fig. 7.At this moment, along the circumferencial direction of upper bracket 410, in the special angle section, described rib 420 is not set.Certainly, according to the amplitude on the circumferencial direction of described conducting parts 210, determine described special angle section accordingly.The part that does not form rib on the upper bracket 410 is called planar portions 460.
In order to ensure the insulation distance between described upper bracket 410 and the described conducting parts 210, described planar portions 460 is positioned at and described conducting parts 210 position in opposite directions; That is, when upper bracket 410 is combined in molded section 130, described planar portions 460 is positioned at and described conducting parts 210 position in opposite directions.
For this reason, in motor of the present invention,, comprise location division 231,430 in order to allow described upper bracket only on ad-hoc location, combine with described molded section 130.That is, described location division is positioned at respectively on described upper bracket 410 and the described molded section 130, makes both only by ad-hoc location, can allow described planar portions 460 combine with described conducting parts 210 position in opposite directions.
Described location division can have the shape of opening portion, described molded section top 131, and the shape of the described upper bracket 410 corresponding with this shape.For example, on described molded section 130, be formed with by outstanding one of radial direction when protruding, on the peripheral surface of upper bracket, form a groove that inserts described projection that cuts by radial direction.Described Fig. 7 illustrates described structure.Certainly, also can convex to form on upper bracket 410, groove is formed on the molded section 130 described.
In addition, motor of the present invention also includes connector 230, described connector 230 is in conjunction with being fixed on the printed circuit board (PCB) 200 of described molded section 130 inside, be used for external power source is switched to described printed circuit board (PCB) 200, one side of described connector 230 is positioned at the outside of described molded section 130, and opposite side is positioned at the inside of described molded section 130.For this reason, as Fig. 3 and shown in Figure 5, on the top of described molded section 130, be formed with the connector joint portion 135 that combines with connector 230 and be advisable, described connector joint portion 135 can form by a part of cutting molded section 130 tops.The shaped upper part of the shaped upper part of described connector 230 and molded section 130, the molded section 130 outer angular shapes that particularly form the opening portion are preferably identical.
In addition, described location division 231,430 can be formed on the described connector 230 rather than on the molded section 130.Because described location division is the structure that allows top and the upper bracket of molded section 130 only combine by ad-hoc location, so the operator need know its ad-hoc location in advance so that assembling more easily.In detail, 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 described planar portions or groove etc.) of upper bracket 410 easily.
If described location division is set, then can easily know the ad-hoc location on molded section top by connector 230 on connector 230.
Below, in conjunction with Fig. 9 and Figure 10 the combination of molded section 130 and upper bracket 410 is elaborated.
On the top of motor molded section 130 of the present invention, be formed with opening portion, aforesaid top 131.That is, stator assembly 100 is installed in opening portion, described top 131, its inside and outside connection.Described upper bracket 410 sealing opening portions, described top 131.Above-mentioned part is identical with common motor, and described upper bracket 410 brute forces are pressed in the opening portion 131 of described molded section 130.But, between molded section 130 and upper bracket 410, might have water saturates and come in by described opening portion 131; For soaking into of anti-sealing, need between molded section 130 and upper bracket 410, waterproof construction be set.
For this reason, in motor of the present invention, the opening portion, top 131 of molded section 130 have internal diameter mutually different, form inboard inwall 136, outside inwall 137 and the planar portions 138 of step each other.Described planar portions 138 is connected the top of described molded section 130.That is, the upper end of outside inwall 137 is higher than the upper end of described inboard inwall 136.Thereby the part of described planar portions 138 is formed by the upper end of inboard inwall 136.
Described upper bracket 410 covers opening portion, described top 131, and its shape and opening portion 131, described top are suitable; When opening portion, top 131 had circular configuration as described, described upper bracket 410 also had circular configuration.
The external diameter of described upper bracket 410 is preferably less than opening portion 131 outside inwall internal diameters of molded section 130.Certainly, the external diameter of described upper bracket 410 is greater than the internal diameter of molded section 130 opening portions 131 inboard inwalls.
Described resin piece can also prevent that moisture is impregnated into motor internal by described gap d when linking described molded section 130 and described support 410.Therefore, as long as can prevent that moisture from entering motor internal, resin piece can have multiple choices, as, can be with epoxy resin or silica gel material.
In addition, for the enough resins of application in described gap d,, preferably be formed with groove 139 along circumferencial direction in the exterior angle of described planar portions 138 part.That is, can pass through described groove 139, by the size greater than described support 410 thickness, the described resin piece of application.Thereby, can be corresponding to the degree of depth and the amplitude of described groove 139, the application resin can improve water resistance and binding ability fully.Groove 139 can also prevent that resin is excessive, influences the problem of outward appearance or joint portion quality.
As shown in figure 10, the width of described groove 139 is more preferably greater than the width in described gap; Because described groove 139 its width that are formed on described gap d part downside are greater than described gap, then described resin not only is coated with the thickness part that is contained in described support 410 radial direction ends 441 but also can be coated with the certain position that is contained in the bottom surface.Thereby, can increase the contact area of resin piece and described upper bracket 410 or opening portion, described top 131, can further improve water resistance and binding ability.
In addition, in motor of the present invention, on molded section 130, not only be formed with opening portion, top 131, can also form lower opening part 132.The combined structure of described lower opening part 132 and lower bracket 420 can be identical with the combined structure of opening portion, top 131 with upper bracket 410 recited above.But, if lower bracket is not soaked into the possibility of moisture, then need not be necessarily identical with aforementioned structure.Certainly, if there is the possibility of soaking into moisture in lower bracket 420, then said structure can be applied in the combination of lower bracket 420.
Motor of the present invention opening portion 131,132 and support 410,420 can also comprise powerful mosaic texture or powerful pressing structure (below, the convenience on illustrating is called " mechanicalness combined structure ") when comprising described waterproof construction.That is, described rack mechanical be combined in the opening portion, carry out resin piece application recited above again.
This mechanicalness combined structure can allow described gap d be formed uniformly along the circumferencial direction of support, prevents that support from moving simultaneously when the application resin piece.
Described mechanicalness combined structure can be by being inserted in described inboard inwall 136, and the joggling part 440 that is inserted in described inboard inwall 136 forms.Described joggling part 440 can be from terminal inboard, the formation of warpage downwards on described support 410,420 radial directions.That is, described joggling part 440 is inserted in the described inboard inwall 136, tentatively support is fixed on the molded section 130.
Described joggling part 440 forms along the circumferencial direction of described support 410,420, can also further improve the rigidity of described support.
The present invention can be by mechanicalness combination and chemical combination, molded section 130 and support 410,420 combinations more firmly, effectively prevent owing to reason supports such as vibration from molding portion from situation the motor that can provide high-quality to guarantee takes place.In addition, owing to select chemical sealing combination for use, can also prevent because the electric leakage accident of soaking into initiation of moisture.
Claims (13)
1. a motor is characterized in that: comprise stator assembly (100), opening portion (131,132), support (410,420) and resin object; Described stator assembly (100) by the stator core (111) of hollow, be positioned at the stator (110) of the insulator of the coil (119) that is used on the stator core (111) to reel, the molded section (130) of encircling described stator core (111) and described insulator (112) is integrally formed; The inboard inwall (136) that described opening portion (131,132) and stator assembly (100) external communications, its internal diameter are different mutually and the upper end of outside inwall (137) form ledge structure, are connected by the top of planar portions (138) with described molded section (130); The external diameter of described support (410,420) is less than the internal diameter of described outside inwall (137), and it is installed on the described planar portions (138) along the end on the radial direction, and keeps certain interval (d) with described outside inwall, seals described opening portion (131,132); Described resin object is coated with and is contained in the described gap (d).
2. motor according to claim 1 is characterized in that: described printed circuit board (PCB) (200) is combined in described molded section (130) inside by described opening portion (131).
3. motor according to claim 1 is characterized in that: described resin object is combined as a whole described support (410) and described molded section (130), and resin object is also waterproof.
4. motor according to claim 3 is characterized in that: described resin object is epoxy resin or silica gel.
5. motor according to claim 1 is characterized in that: described support (410) is terminal inboard along radial direction, and warpage ground is formed with the joggling part (440) that inserts described inboard inwall (136) downwards.
6. motor according to claim 5 is characterized in that: the powerful described inboard inwall (136) that embeds of described joggling part (440).
7. motor according to claim 1 is characterized in that: this motor also includes lower bracket (420); Described lower bracket (420) is formed on the bottom of described molded section (130), is communicated with the lower opening part (132) of described stator assembly (100) inside and outside, seals described lower opening part (132).
8. motor according to claim 7 is characterized in that: described rotor assembly (300) is combined in described molded section (130) inside by described lower opening part (132).
9. motor according to claim 1 is characterized in that: described molded section (130) is to be formed by the BMC molding.
10. motor according to claim 1 is characterized in that: the external angle in described planar portions (138) is formed with groove (139) along circumferencial direction.
11. motor according to claim 10 is characterized in that: the width of described groove (139) is greater than the width of described gap (d).
12. motor according to claim 1 is characterized in that: this motor also includes connector (230); Described connector (230) printed circuit board (PCB) (200) inner with being fixed on described molded section (130) combines, external power source is introduced described printed circuit board (PCB) (200) by connector (230), be formed with the connector connecting portion (240) that combines with described connector (230) on the top of described molded section (130).
13. motor according to claim 12 is characterized in that: the shape of the shaped upper part of described connector (230) and described molded section (130) opening portion is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100532084A CN101588096B (en) | 2008-05-23 | 2008-05-23 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100532084A CN101588096B (en) | 2008-05-23 | 2008-05-23 | Motor |
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| Publication Number | Publication Date |
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| CN101588096A true CN101588096A (en) | 2009-11-25 |
| CN101588096B CN101588096B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100532084A Expired - Fee Related CN101588096B (en) | 2008-05-23 | 2008-05-23 | Motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI511419B (en) * | 2013-10-15 | 2015-12-01 | Delta Electronics Shanghai Co | Electric machine |
| CN105379073A (en) * | 2013-07-12 | 2016-03-02 | 三菱电机株式会社 | Rotating electric machine |
| CN106533015A (en) * | 2016-12-05 | 2017-03-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Leading wire fixing structure and motor equipped with leading wire fixing structure |
| CN107240967A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| WO2021185131A1 (en) * | 2020-03-16 | 2021-09-23 | 浙江三花汽车零部件有限公司 | Electric pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705192A (en) * | 2004-05-27 | 2005-12-07 | 乐金电子(天津)电器有限公司 | Stator structure of internal rotor motor |
| JP2007014147A (en) * | 2005-06-30 | 2007-01-18 | Fujitsu General Ltd | Electric motor |
-
2008
- 2008-05-23 CN CN2008100532084A patent/CN101588096B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105379073A (en) * | 2013-07-12 | 2016-03-02 | 三菱电机株式会社 | Rotating electric machine |
| KR101806752B1 (en) * | 2013-07-12 | 2017-12-07 | 미쓰비시덴키 가부시키가이샤 | Rotating electric machine |
| CN105379073B (en) * | 2013-07-12 | 2018-01-19 | 三菱电机株式会社 | Electric rotating machine |
| TWI511419B (en) * | 2013-10-15 | 2015-12-01 | Delta Electronics Shanghai Co | Electric machine |
| CN107240967A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN107240967B (en) * | 2016-03-28 | 2020-11-24 | 德昌电机(深圳)有限公司 | Motor and stator thereof |
| CN106533015A (en) * | 2016-12-05 | 2017-03-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Leading wire fixing structure and motor equipped with leading wire fixing structure |
| WO2021185131A1 (en) * | 2020-03-16 | 2021-09-23 | 浙江三花汽车零部件有限公司 | Electric pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101588096B (en) | 2013-04-10 |
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