CN109713834B - Motor and method for assembling motor - Google Patents
Motor and method for assembling motor Download PDFInfo
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- CN109713834B CN109713834B CN201910164287.4A CN201910164287A CN109713834B CN 109713834 B CN109713834 B CN 109713834B CN 201910164287 A CN201910164287 A CN 201910164287A CN 109713834 B CN109713834 B CN 109713834B
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- 238000000034 method Methods 0.000 title claims description 42
- 238000003825 pressing Methods 0.000 claims description 27
- 238000002788 crimping Methods 0.000 claims description 18
- 210000003298 dental enamel Anatomy 0.000 claims description 15
- 230000004308 accommodation Effects 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a motor, comprising: the motor shell comprises a shell with an upper end opening and a cover plate matched with the shell, and a notch communicated with the upper end opening is formed in the front side of the shell; the stator assembly is positioned in the motor shell and comprises a coil framework and enameled wires wound on the coil framework, the coil framework comprises a framework main body, a terminal receiving part fixedly connected with the framework main body and a plurality of terminals fixed to the terminal receiving part, the terminal receiving part comprises a containing part with a front side opening, and the longitudinal direction of the containing part is parallel to the tangential direction of the framework main body; and a connection wire whose end sections are connected to the terminals within the housing, wherein an extending direction of the end sections of the connection wire is the same as a longitudinal direction of the housing, and the connection wire is led out from an intermediate position of the housing.
Description
Technical Field
The present invention relates to an electric motor, and a method of assembling the same.
Background
In order to improve the assembly efficiency and reduce the labor cost, motor manufacturers introduce a motor automatic assembly production line, and the motor automatic assembly has higher standardized requirements on the specifications of all parts of the motor. During motor assembly in the prior art, the connecting wire and the terminal of the coil framework are welded firstly, then the coil framework fixedly connected with the connecting wire is assembled with the machine shell, and then other whole machine assembly procedures are gradually carried out. Because the length of the motor connecting wire of each model is different, the follow-up assembly process of the motor in the prior art is all to bring the connecting wire with different lengths, and the connecting wire can not realize the specification unification, leads to motor assembly unable automation.
Disclosure of Invention
In view of the above problems, the present invention proposes a motor including: the motor shell comprises a shell with an upper end opening and a cover plate matched with the shell, and a notch communicated with the upper end opening is formed in the front side of the shell; the stator assembly is positioned in the motor shell and comprises a coil framework and enameled wires wound on the coil framework, the coil framework comprises a framework main body, a terminal receiving part fixedly connected with the framework main body and a plurality of terminals fixed to the terminal receiving part, the terminal receiving part comprises a containing part with a front side opening, and the longitudinal direction of the containing part is parallel to the tangential direction of the framework main body; and a connection wire whose end sections are connected to the terminals within the housing, wherein an extending direction of the end sections of the connection wire is the same as a longitudinal direction of the housing, and the connection wire is led out from an intermediate position of the housing.
The motor having the above-described configuration may have the following effects: the claw pole plate assembly, the rotor, the stator assembly, the gear set, the cover plate and the connecting wires can be connected after a series of tests are carried out, and all the previous working procedures of connecting the connecting wires are carried out without connecting wires, so that automatic assembly can be realized, and the labor cost is reduced; the end section of the connecting wire does not need to be bent in the accommodating part of the terminal receiving part, so that the connecting wire is more convenient to connect, and the installation procedure is simplified; because the end section of the connecting wire does not need to be bent, the length of the connecting wire is shortened, and the cost is reduced; because the accommodating part is opened towards the front side, the connecting wire is connected inwards from the front side, so that the height of the motor can be reduced, the overall size of the motor is reduced, and the motor is compact in structure.
The motor according to the invention may have one or more of the following features, alone or in combination.
According to one embodiment of the invention, the end section of the connecting wire is pressed into the receptacle to the terminal.
The terminal section of the connecting wire is connected to the terminal by crimping, and besides the advantages, since the accommodating portion is opened toward the front side, the connecting wire is crimped from the front side inward, so that crimping is easy to perform, and the height of the motor can be reduced, thereby reducing the overall size of the motor and making the motor compact in structure.
According to an embodiment of the present invention, the receiving part is located in the middle of the terminal receiving part, and the terminal receiving part further includes supporting parts located at both sides of the receiving part, and a wire passing groove located between the receiving part and the supporting parts, the wire passing groove being configured to allow an enamel wire of the stator assembly to pass through.
The wire passing groove is used for the enameled wire to walk the line, and its distribution is in accommodation portion both sides, and the connecting wire in the crimping terminal draws forth from the accommodation portion centre for electric gap, creepage distance between two electrified pieces are big enough, accord with electric safety requirement completely. The wire passing grooves on two sides of the containing part are used for wiring enameled wires, the middle part of the containing part is reserved for wiring connecting wires, the structure enables the two connecting wires to be nearest in wiring, space is saved, the length of the connecting wires inside the motor can be reduced, the length of the connecting wires can be shortened to the greatest extent, and cost is saved.
According to an embodiment of the present invention, the front end surface of the accommodating portion protrudes further to the front side than the front end surface of the supporting portion.
Therefore, the enameled wire is easy to enter the wire passing groove, and the difficulty of a winding process is reduced.
According to one embodiment of the invention, the distance between the two outer sides of the support is equal to the width of the cutout of the housing, such that the support cooperates with the cutout when the stator assembly is fitted into the housing.
Therefore, after the coil framework is assembled in the shell, the coil framework can be positioned in the circumferential direction, and the stator assembly is ensured not to generate circumferential displacement in the assembly process of the whole machine. Compared with the technical scheme that the coil framework is positioned in the circumferential direction by matching the inner side part of the outlet box with the coil framework and propping the outer side part of the outlet box against the notch of the shell in the prior art, the positioning mode does not need to assemble the outlet box first, so that connection of connecting wires is not needed before other whole machine assembling processes, and the motor assembly is facilitated to be automated.
According to one embodiment of the invention, the outer side of the support part is provided with a boss which abuts against the outer side of the housing when the support part is mated with the cutout.
Thereby, after the bobbin is assembled to the housing, the movement of the bobbin in the radial direction can be restricted; and the boss can provide sufficient support for the connection wire crimp.
According to one embodiment of the invention, the outer lower part of the support part is provided with a downwardly inclined guide part.
The guide part makes the coil skeleton assemble into the casing more easily, avoids the casing scratch coil skeleton to produce plastics rubbish simultaneously and then leads to motor noise or card to die.
According to one embodiment of the invention, the receiving portion comprises a terminal slot configured to receive a terminal head of a terminal and a wire slot configured to receive a connecting wire, an end section of the connecting wire being received within the wire slot and the terminal head, a height between upper and lower sides within the terminal slot being greater than a height between upper and lower sides within the wire slot, the height between upper and lower sides within the wire slot being equal to an outer diameter of the connecting wire.
Therefore, after the connecting wire is pressed, three surfaces of the wire slot are propped against the connecting wire, so that the connecting wire has larger holding force.
According to one embodiment of the invention, the front side edges of the terminal slot and the wire slot are provided with inwardly inclined guides.
The notch edges of the terminal groove and the wire slot incline inwards to provide guidance for terminal assembly and connecting wire assembly, so that the terminal is easier to press in during assembly, and meanwhile, the accommodating part cannot be scraped out of plastic garbage during terminal assembly.
According to one embodiment of the invention, the underside of the receiving portion comprises a recess in the middle in communication with the front opening.
The notch structure provides enough space for wiring for the connecting wire. In addition, the notch structure enables the outgoing line direction of the connecting line to be parallel to the direction of the output shaft.
According to an embodiment of the present invention, the terminal includes a terminal head portion and a terminal tail portion integrally formed, the terminal head portion includes a rear face portion integrally extending with the terminal tail portion and side face portions symmetrically provided on both sides of the rear face portion, wire-pressing grooves are symmetrically provided on the side face portions, the wire-pressing grooves are capable of partially peeling or piercing insulation layers of connection wires pressed into the wire-pressing grooves, and the wire-pressing grooves are configured to open toward a front side direction and extend in the front-rear direction when the terminal is assembled to the terminal receiving portion.
Since the wire grooves can be partially peeled off or pierce the insulating layer of the connecting wire pressed into the wire pressing groove, the connecting wire can be crimped to the terminal without welding, thereby reducing the contamination of tin beads and the like. The terminal structure is simple and easy to manufacture, and the bending process can be simplified. In addition, the wire pressing groove can form certain extrusion to the connecting wire for the wire pressing groove plays the centre gripping effect to the connecting wire, when fixed connecting wire, can make contact connection more firm reliable. In addition, the line ball groove can play simultaneously and to the guiding effect of connecting wire, can remove a section distance after making the connecting wire by the slit of impressing, can make the connecting wire be difficult for deviating from the slit opening part of impressing.
According to one embodiment of the invention, the width of the terminal tail is greater than twice the thickness.
The flat structure at the tail part of the terminal enables the retention degree of the pins for doubling the enameled wires to be better in the winding process of the enameled wires, and avoids the pins from generating displacement and tearing the enameled wires.
According to one embodiment of the present invention, the outer sides of the side portions are symmetrically provided with barb portions configured to mate with terminal barb mating portions located at the receiving portion.
The barb portion of the terminal is matched with the barb matching portion of the terminal of the containing portion, so that the terminal is not easy to break away after being inserted, and the stability is better.
According to one embodiment of the present invention, the terminal tail portion extends rearward through an opening provided in the housing portion, is bent in the rear direction of the terminal receiving portion, and is respectively bent outward.
The bending mode of the tail part of the terminal reserves enough installation space for the gear. After the tail parts of the terminals are bent towards two sides, the function of loosening the enameled wires is achieved, and breakage caused by later stress of the enameled wires is avoided.
According to one embodiment of the present invention, the enamel wire of the stator assembly is wound around the terminal tail portion starting from the inside of the terminal tail portion.
Because the terminal tail extends backward through the opening arranged in the accommodating part and is bent in the rear direction of the terminal receiving part, the enameled wire is wound on the terminal tail from the inner side of the terminal tail, and then the terminal tail is bent outwards, the winding direction ensures that the enameled wire is not crushed or broken when the terminal tail bends and loosens the wire towards two sides, and the enameled wire is in an absolute loose state when the terminal tail bends towards two sides, so that the enameled wire is not broken due to stress in the subsequent assembly process.
According to one embodiment of the invention, the motor further comprises an outlet box, the outlet box is provided with an outlet hole, a connecting wire is led out of the motor from the outlet hole, the outlet box is assembled into an opening defined by the notch of the shell and the cover plate, a clamping block matched with the clamping hole on the cover plate is arranged on the upper end face of the outlet box, and a clamping strip matched with the inner side of the notch of the shell and extending downwards is arranged on the lower end face of the outlet box.
The clamping strip at the lower end of the wire outlet box is matched with the inner side of the lower part of the notch of the shell, and then the clamping block at the upper end of the wire outlet box is used for clamping the clamping hole of the cover plate, so that the wire outlet box can be fixed. The structure can enable the outlet box to be assembled in the final assembly process of the motor. The outlet box adopts an outer buckle type, and the width of the outlet box is smaller than that of the existing inner buckle type outlet box, so that the space of the outlet part of the motor protruding out of the shell is reduced, and the cost can be saved.
According to one embodiment of the invention, the lower end surface of the outlet box is provided with a groove positioned outside the clamping strip.
When the wire outlet box is assembled, the groove provides enough space for the inclined assembly of the wire outlet box, so that the assembly of the wire outlet box can be successfully completed.
According to one embodiment of the invention, the groove is a circular arc groove.
Therefore, the shape of the groove is matched with that of the shell, so that the assembly of the outlet box is easier.
According to one embodiment of the invention, the rear face of the outlet box, which corresponds to the terminal receiving portion, is provided with a crimping boss which cooperates with the receiving portion of the terminal receiving portion.
After the outlet box is assembled, the line pressing boss is pressed on the connecting line, so that the holding force of the connecting line is increased.
According to one embodiment of the invention, the outlet box is integrally formed, and the outlet hole penetrates through the outlet box in the front-rear direction at the middle of the outlet box.
The outlet box arranged in the mode can enable the outlet direction of the connecting wire to be the radial direction of the coil framework, and is simple in structure, easy to manufacture and low in cost.
According to one embodiment of the invention, the outlet box is integrally formed, and is provided with a forwardly protruding wire portion at a lower portion thereof, the outlet hole downwardly passing through the wire portion, and the connection wire downwardly bent through the wire portion and led out from the outlet hole.
The lead part protruding forwards provides a larger space for bending the connecting wire, and is convenient for outgoing wires from the lower part, so that the outgoing wire direction of the connecting wire can be parallel to the direction of the output shaft. Moreover, the wire outlet box arranged in the mode does not need to manually pass the connecting wire through the wire outlet hole before being assembled to the shell and the cover plate, so that the automation of the assembly of the wire outlet box can be realized. When the connecting wire is in crimping, the wire outlet box is not needed, the operation is more convenient, and the efficiency is high.
According to one embodiment of the invention, the outlet box comprises a first outlet box and a second outlet box, wherein the first outlet box is in a U-shaped shape, the first outlet box is provided with a slot extending from the upper end surface to the middle part, and the second outlet box is embedded in the slot and surrounds the first outlet box into an outlet hole which is positioned in the middle part of the first outlet box and extends along the front-back direction.
The wire outlet box arranged in the mode does not need to manually pass the connecting wire through the wire outlet hole before being assembled to the shell and the cover plate, and the automation of the assembly of the wire outlet box can be realized. When the connecting wire is in crimping, the wire outlet box is not needed, the operation is more convenient, and the efficiency is high.
The invention also proposes a method of assembling an electric machine according to the above embodiment, comprising the steps of: providing a shell; assembling the stator assembly into the housing; assembling the cover plate to the housing; connecting the end section of the connecting wire to the terminal within the receiving portion; and assembling the outlet box to the cabinet and the cover plate.
According to one embodiment of the invention, the connection of the outlet box to the housing and the cover plate is a crimping of the outlet box to the housing and the cover plate.
The method realizes that the cover plate is assembled to the shell and then is connected with the connecting wire and the assembly outlet box, so that the connecting wire is not required to be carried in all working procedures before crimping, automatic assembly can be realized, and labor cost is reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. Wherein the showings are for the purpose of illustrating some embodiments of the invention only and not for the purpose of limiting the same.
Fig. 1 is a schematic view of the overall structure of a motor according to an embodiment of the present invention after assembly is completed.
Fig. 2 is an exploded view of the overall structure of a motor according to one embodiment of the present invention.
Fig. 3 is a perspective view of a stator assembly according to one embodiment of the invention.
Fig. 4 is another perspective view of a stator assembly according to an embodiment of the present invention, in which enamel wires are not shown.
Fig. 5 is a perspective view of a bobbin according to an embodiment of the present invention.
Fig. 6 and 7 are perspective views of a terminal according to an embodiment of the present invention.
Fig. 8 is a plan view of a terminal according to one embodiment of the present invention.
Fig. 9 is a partial bottom view of a bobbin according to one embodiment of the present invention.
Fig. 10 is a front view of a housing and coil former according to one embodiment of the invention.
Fig. 11 is a top view of a bobbin according to an embodiment of the present invention assembled to a housing.
Fig. 12 is a partial enlarged view of fig. 11.
Fig. 13 is a partial enlarged view of a bobbin according to an embodiment of the present invention.
Fig. 14 is a plan view of a receiving portion according to an embodiment of the present invention.
Fig. 15 is a partial enlarged view of a receiving part according to an embodiment of the present invention.
Fig. 16 is a schematic view of an outlet box according to one embodiment of the invention.
Fig. 17 is a schematic view of an outlet box during assembly to a motor housing according to one embodiment of the invention.
Fig. 18 is a schematic view of the outlet box according to one embodiment of the invention after assembly to the motor housing.
Fig. 19 is a schematic view of an outlet box according to one embodiment of the invention.
Fig. 20 is a schematic view of an assembly process of a motor according to an embodiment of the present invention.
Fig. 21 is a schematic diagram of an assembly process of a motor according to one embodiment of the invention.
Fig. 22 is a schematic view of an outlet box according to one embodiment of the invention.
Fig. 23 is a schematic diagram of an assembly process of a motor according to an embodiment of the invention.
Fig. 24 is a schematic view of an assembly process of a motor according to an embodiment of the invention.
Fig. 25 and 26 are schematic views of an outlet box according to an embodiment of the present invention.
Fig. 27 is a schematic view of the mating of the second outlet box with the terminal receiving portion according to one embodiment of the invention.
Fig. 28 is a schematic diagram of an assembly process of a motor according to one embodiment of the invention.
Fig. 29 is a schematic diagram of an assembly process of a motor according to one embodiment of the invention.
Fig. 30 is a schematic diagram of an assembly process of a motor according to one embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the technical solutions of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The invention is described in detail below by way of description of example embodiments.
Fig. 1 is a schematic view of the overall structure of a motor 1 according to an embodiment of the present invention after assembly is completed. Fig. 2 is an exploded view of the overall structure of the motor 1 according to one embodiment of the present invention. Referring to fig. 1 and 2, the motor 1 according to the present invention is preferably a small-sized motor including a motor housing 2, a rotor 3, a stator assembly 4, a connection wire 5, an outlet box 6, a gear set 7, a claw-pole plate assembly 8, and an output shaft 9. When the motor is energized, the motion of the rotor 3 is transmitted to the output shaft 9 through the gear set 7, and then is output from the output shaft 9 to the outside.
The motor housing 2 includes a casing 21 having an upper end opening and a cover plate 22 fitted with the casing 21. The front side of the casing 21 is provided with a slit communicating with the upper end opening. The cover plate is provided with a through hole allowing the output shaft to pass through.
Fig. 3 and 4 are perspective views of a stator assembly 4 of the motor 1 according to one embodiment of the present invention. The stator assembly 4 is located within the motor housing 2, and as shown in fig. 3, the stator assembly 4 includes a bobbin 41 and an enamel wire 42. The bobbin 41 includes a bobbin body 411, a terminal receiving portion 412 fixedly connected to the bobbin body, and a plurality of terminals 413 to which the terminal receiving portion is fixed. The terminal 413 is fixedly fitted to the terminal receiving portion 412. The enamel wire 42 wound around the coil bobbin 41 is connected to the terminal 413 and led out of the motor through the terminal. Alternatively, the number of terminals according to the present embodiment is 2, and other numbers of terminals may be provided.
Fig. 5 is a perspective view of a bobbin 41 according to an embodiment of the present invention. As shown in fig. 5, the terminal receiving portion 412 includes a housing portion 4121 having a front side opening, and a longitudinal direction of the housing portion 4121 is parallel to a tangential direction of the backbone main body 411. The longitudinal direction of the housing portion 4121 refers to the extending direction of the longer side of the housing portion 4121.
Here, referring to the drawings, the opening-facing side of the housing portion 4121 is defined as the front side, and the opposite direction to the front side is defined as the rear side. The longitudinal direction of the housing portion 4121 is the left-right direction.
The end sections of the connection wires 5 are connected to the terminals 413 in the receiving portion 4121, for example, by welding or crimping. Preferably, as shown in fig. 2, the end section of the connection wire 5 is pressed into the terminal 413 in the receiving portion 4121. Wherein the extending direction of the end section of the connection wire 5 is the same as the longitudinal direction of the housing 4121, and the connection wire 5 is led out from the middle position of the housing 4121.
The motor 1 having the above-described configuration may have the following effects: the connecting wire 5 can be connected after the claw-pole plate assembly 8, the rotor 3, the stator assembly 4, the gear set 7 and the cover plate 22 are assembled and a series of tests are carried out, and all the previous working procedures of connecting the connecting wire 5 are not needed to be carried out with connecting wires, so that automatic assembly can be realized, and the labor cost is reduced; the end section of the connecting wire 5 does not need to be bent in the accommodating part 4121 of the terminal receiving part 412, so that the connecting wire 5 is more convenient to connect, and the installation procedure is simplified; because the end section of the connecting wire 5 does not need to be bent, the length of the connecting wire is shortened, and the cost is reduced; since the housing 4121 is opened toward the front side, the connection wire 5 is connected inward from the front side, and the height of the motor 1 can be reduced, thereby reducing the overall size of the motor 1 and making the motor 1 compact.
In particular, when crimping is used, since the housing portion 4121 is opened toward the front side, the connection wire 5 is crimped from the front side inward, crimping is facilitated as compared with crimping from other directions, and the height of the motor 1 can be reduced, thereby reducing the overall size of the motor 1, making the motor 1 compact.
Hereinafter, crimping will be described as an example.
Fig. 6 and 7 are perspective views of a terminal 413 according to an embodiment of the present invention. The terminals 413 include integrally formed terminal header 4131 and terminal tail 4132. The terminal tail 4132 is a strip-like structure. The terminal head portion 4131 includes a rear face portion extending integrally with the terminal tail portion 4132, and side face portions symmetrically disposed on both sides of the rear face portion. The lateral surface parts are symmetrically provided with wire pressing grooves 41311. The wire pressing groove 41311 can partially peel or pierce the insulating layer of the connection wire 5 pressed into the wire pressing groove 41311, thereby bringing the bare wire portion of the connection wire 5 into contact with the wire pressing groove 41311 to achieve electrical connection. The wire pressing groove 41311 is configured to open toward the front side direction and extend in the front-rear direction when the terminal 413 is fitted to the terminal receiving portion 412. In addition, the line ball groove 41311 can form certain extrusion to connecting wire 5 for line ball groove 41311 plays the centre gripping effect to connecting wire 5, when fixed connecting wire 5, can make contact connection more firm reliable. In addition, the wire pressing groove 41311 plays a guiding role on the connecting wire 5, namely, the connecting wire 5 can move a distance after being pressed into the slit, so that the connecting wire 5 is not easy to break away from the slit opening of the pressing.
In order to ensure sharpness of the wire pressing groove 41311 and to make the size of the terminal 413 small enough, the thickness of the terminal plate needs to be small enough, and after the terminal 413 is inserted into the terminal receiving portion 412, the tail portion 4132 of the terminal needs to be bent to serve as a pin for doubling the enameled wire 42, and the pin needs to have enough holding force to overcome the winding tension of the enameled wire 42. As shown in fig. 8, the terminal tail 4132 is designed to have a width W greater than twice the thickness T. The flat configuration of the terminal tail 4132 provides better retention of the pins during the winding process of the enamel wire 42, and prevents the pins from being displaced and tearing apart the enamel wire.
The receiving portion 4121 is for receiving and supporting the terminal header 4131 and has an opening or through-hole through which the terminal tail 4132 is inserted. As shown in fig. 3 and 4, the terminal tail portions 4132 extend rearward through openings provided in the housing portion 4121, are bent in the rear direction of the terminal receiving portion 412, and are respectively bent outward. The terminal tail 4132 is bent in a manner that reserves enough mounting space for the gears. After the terminal tail 4132 is bent towards two sides, the wire loosening effect of the enameled wire is achieved, and the wire breakage caused by the later stress of the enameled wire is avoided.
Alternatively, the outer sides of the side portions are symmetrically provided with the barb portions 41312 as shown in fig. 6 and 7. The barb 41312 is configured to mate with a terminal barb mating portion located on the receiving portion 4121. After the terminal 413 is inserted into the accommodating portion 4121, the barb portion 41312 of the terminal 413 is engaged with the terminal barb fitting portion of the accommodating portion 4121, so that the terminal 413 is not easy to be separated, and the stability is better.
Alternatively, as shown in fig. 3, the enamel wire 42 of the stator assembly 4 is wound around the terminal tail 4132 starting from the inside of the terminal tail 4132. After the terminal tail portions 4132 extend rearward through the openings provided in the receiving portion 4121 and are bent in the rearward direction of the terminal receiving portion 412, the wire winding of the enamel wire 42 is first performed and then the terminal tail portions 4132 are bent outward. The winding method of the enameled wire 42 is as follows: the enamel wire 42 of the stator assembly 4 is wound around one of the terminal tail portions 4132 from a portion thereof remote from the terminal head portion 4131 toward the terminal head portion 4131, then wound around the other terminal tail portion 4132 from the wire passing groove 4123 into the backbone wire groove, and wound around the other terminal tail portion 4132 from a portion of the other terminal tail portion 4132 adjacent to the terminal head portion 4131 toward a portion remote from the terminal head portion 4131 after passing through the wire passing groove 4123 a certain number of turns. Whereas "the enamel wire 42 of the stator assembly 4 is wound around the terminal tail 4132 starting from the inner side of the terminal tail 4132" means that the enamel wire 42 from the two wire passing grooves 4123 is wound around the terminal tail 4132 starting from the inner side of the corresponding terminal tail 4132 facing the other terminal tail 4132 (i.e., the side between the two terminal tail). The winding direction makes the enameled wire 42 not be crushed or broken when the terminal tail 4132 bends towards two sides to loosen the wire, and the enameled wire 42 is in an absolute loose state when the terminal tail 4132 bends towards two sides, so that the enameled wire 42 cannot be broken due to stress in the subsequent assembly process.
Alternatively, as shown in fig. 4, the accommodating portion 4121 is located in the middle of the terminal receiving portion 412, and the terminal receiving portion 412 further includes supporting portions 4122 located at both sides of the accommodating portion 4121, and a wire passing groove 4123 located between the accommodating portion 4121 and the supporting portions 4122. The wire passing groove 4123 is configured to allow the enamel wire 42 of the stator assembly 4 to pass therethrough. The wire passing groove 4123 is used for routing the enamel wire 42 from the backbone body 411 to the terminal tail 4132 and is connected to the terminal tail 4132. Since the wire passing grooves 4123 are distributed on both sides of the accommodating portion 4121, the connecting wires 5 crimped into the terminals 413 are led out from the middle of the accommodating portion 4121, so that the electric gap and the creepage distance between the two electrified pieces (the terminal tail portion 4132 of the winding enameled wire 42) are large enough to completely meet the electric safety requirements. The wire passing grooves 4123 on two sides of the accommodating part 4121 are used for wiring the enameled wires 42, the middle part of the accommodating part 4121 is reserved for wiring the connecting wires 5, the structure enables the two connecting wires 5 to be nearest in wiring, space is saved, the length of the connecting wires 5 in the motor 1 can be reduced, the length of the connecting wires 5 can be shortened to the greatest extent, and cost is saved.
Fig. 9 is a partial bottom view of the bobbin 41 according to one embodiment of the present invention. Alternatively, as shown in fig. 9, the front end surface of the housing portion 4121 protrudes further to the front side than the front end surface of the supporting portion 4122. Therefore, the enameled wire 42 is easy to enter the wire passing groove 4123, and the difficulty of a winding process is reduced.
Fig. 10 is a front view of the housing 21 and the bobbin 41 according to an embodiment of the present invention.
Fig. 11 is a top view of the bobbin 41 according to an embodiment of the present invention after being assembled to the housing 21.
Fig. 12 is a partial enlarged view of fig. 11. As shown in fig. 9 to 11, alternatively, a distance L1 between both outer sides of the support portion 4122 is equal to a width L2 of the cutout of the housing 21, so that the support portion 4122 is engaged with the cutout when the stator assembly 4 is assembled into the housing 21, and the cutout edge of the housing 21 abuts against the outer side of the support portion 4122. Therefore, after the coil framework 41 is assembled into the casing 21, the coil framework 41 clamps the casing 21, so that the coil framework 41 can be positioned in the circumferential direction, and the stator assembly 4 cannot be circumferentially displaced in the subsequent assembly process of the whole machine. Compared with the technical scheme that the coil framework is positioned in the circumferential direction by matching the inner side part of the outlet box with the coil framework and propping the outer side part of the outlet box against the notch of the shell in the prior art, the positioning mode does not need to assemble the outlet box first, so that connection of connecting wires is not needed before other whole machine assembling processes, and the motor assembly is facilitated to be automated.
With continued reference to fig. 9-12, the outer side of the support 4122 may optionally be provided with a boss 41221, which boss 41221 abuts the outer side of the housing 21 when the support 4122 is mated with the cutout. Thereby, after the bobbin 41 is assembled to the housing 21, the movement of the bobbin 41 in the radial direction can be restricted, and the boss 41221 can provide a sufficient supporting force for the connection wire crimping. Preferably, the inner side of the boss 41221 is spaced apart from both sides of the terminal receiving portion 412 by an arc-like edge distance equal to the thickness of the case 21, so that the bobbin 41 is positioned in the radial direction.
Fig. 13 is a partial enlarged view of the bobbin 41 according to one embodiment of the present invention. The outer lower portion of the support portion 4122 may be provided with a guide portion 41222 inclined downward. The guide 41222 makes the bobbin 4122 easier to assemble into the housing 21 from top to bottom, while avoiding the housing 21 from scratching the bobbin 41222 to generate plastic dust, which in turn causes noise or jamming of the motor 1.
Fig. 14 is a plan view of a housing 4121 according to one embodiment of the present invention. The receiving portion 4121 may include a terminal slot 41211 and a wire slot 41212. The terminal slot 41211 is configured to receive the terminal head 4131 of the terminal 413. The wire chase 41212 is configured to receive the connection wire 5. The end sections of the connection wires 5 may be received in the wire slots 41212 and the terminal heads 4131. Optionally, a height D1 between the upper and lower sides in the terminal slot 41211 is greater than a height D2 between the upper and lower sides in the wire slot 41212. Preferably, the height D2 between the upper and lower sides within the wire chase 41212 is equal to the outer diameter of the connecting wire 5. Thus, after the connecting wire 5 is pressed, three surfaces of the wire groove 41212 are abutted against the connecting wire 5, so that the connecting wire 5 has a large holding force. For example, as shown in fig. 14, the connection wire 5 crimped to the right half of the housing portion 4121 abuts against the upper, lower, and right three faces of the right side wire groove 41212.
Fig. 15 is a partial enlarged view of the housing 4121 according to one embodiment of the present invention. The front side edges of the terminal slot 41211 and the wire slot 41212 may be provided with inwardly inclined guide portions 41213. The slot edges of the terminal slots 41211 and 41212 are inclined inwards to provide guidance for assembling the terminal 413 and assembling the connecting wire 5, so that the terminal 413 can be pressed in more easily during assembling, and meanwhile, the accommodating part 4121 cannot be scraped out of plastic garbage during assembling of the terminal 413.
Referring to fig. 5, the underside of the receiving portion 4121 includes a notch 41214 at the middle that communicates with the front-side opening. The notch structure provides sufficient wiring space for the connecting wire 5. Furthermore, the notch structure allows the outgoing line direction of the connection line 5 to be parallel to the direction of the output shaft 9. For example, as shown in fig. 24, the wire outlet direction of the connection wire 5 may be parallel to the direction of the output shaft 9, and the connection wire 5 is led out through the notch 41214.
As shown in fig. 2, the motor 1 further includes an outlet box 6. Fig. 16 is a schematic view of the outlet box 6 according to one embodiment of the invention. Fig. 17 is a schematic view of the process of assembling the outlet box 6 to the motor housing 2 according to one embodiment of the present invention. Fig. 18 is a schematic view of the outlet box 6 according to an embodiment of the present invention after being assembled to the motor housing 2. The outlet box 6 may be provided with an outlet hole 61, and the connection wire 5 may be led out of the motor 1 from the outlet hole 61. The outlet box 6 may be fitted into an opening defined by the cutout of the casing 21 and the cover plate 22.
Alternatively, the upper end surface of the outlet box 6 may be provided with a clamping block 62 matched with a clamping hole on the cover plate 22, and the lower end surface of the outlet box 6 may be provided with a clamping strip 63 which extends downwards and is matched with the inner side of the notch of the casing 21. As shown in fig. 17 and 18, the process of assembling the outlet box 6 to the motor housing 2 according to one embodiment of the present invention is: the clamping strip 63 at the lower end of the outlet box 6 is inserted into the notch of the casing 21 to clamp the inner side of the lower part of the notch of the casing 21, then the upper part of the outlet box is pressed backwards, and the clamping hole of the cover plate 22 is clamped by the clamping block 62 at the upper end of the outlet box 6, so that the outlet box 6 can be fixed. This structure allows the outlet box 6 to be assembled during the final assembly process of the motor. In the invention, the outlet box 6 adopts an outer buckle type, and the width of the outlet box is smaller than that of the existing inner buckle type outlet box, so that the space of the outlet part of the motor 1 protruding out of the shell 21 is reduced, and the cost can be saved.
Fig. 19 is a schematic view of the outlet box 6 according to one embodiment of the invention. The lower end surface of the outlet box 6 may be provided with a groove 64 located outside the clip 63. When the outlet box 6 is assembled, the grooves 64 incline the outlet box 6 as shown in fig. 17 to provide enough space for the clamping bars 63 to be assembled into the casing 21, so that the assembly of the outlet box 6 can be successfully completed. Preferably, the recess 64 is a circular arc recess. The arcuate shape of the recess 64 matches the shape of the housing 21 to facilitate assembly of the outlet box 6.
Referring back to fig. 16, the rear face of the outlet box 6 corresponding to the terminal receiving portion 412 is provided with a crimping boss 65 which mates with the receiving portion 4121 of the terminal receiving portion 412. After the outlet box 6 is assembled, the wire pressing boss 65 presses on the connecting wire 5, and the holding force of the connecting wire 5 is increased.
The structure of the outlet box according to the present invention may have three kinds, and the following description should be taken one by one, and the outlet boxes of the three kinds may have the features described above, for example, the fixture block 62, the fixture bar 63, the groove 64, and the wire pressing boss 65.
As shown in fig. 16, the first structure of the outlet box 6 is such that the outlet box 6 is integrally formed, and the outlet hole 61 penetrates the outlet box 6 in the front-rear direction at the middle of the outlet box 6. The outlet box 6 arranged in this way can make the outlet direction of the connecting wire 5 be the radial direction of the coil frame 41, and the outlet box 6 has simple structure, easy manufacture and low cost.
The method of assembling the motor 1 according to the present invention will be described below taking the outlet box 6 of the first structure as an example. The method of assembling the motor 1 according to one embodiment of the present invention comprises the steps of: providing a housing 21; assembling the stator assembly 41 into the casing 21; fitting the cover plate 22 to the casing 21 as shown in fig. 20; pressing the end section of the connection wire 5 into the terminal 413 in the housing 4121 as shown in fig. 21; and the outlet box 6 is assembled to the cabinet 21 and the cover plate 22. Before the end section of the connection wire 5 is pressed into the terminal 413 in the housing 4121, the connection wire 5 needs to be passed through the wire outlet hole 61 of the wire outlet box 6 and then the connection wire 5 is pressed as shown in fig. 21.
As shown in fig. 22, the outlet box 6 is integrally formed, and the outlet box 6 is provided at a lower portion thereof with a wire portion 66 protruding forward. The wire outlet hole 61 passes through the wire guide 66 downward, and the connection wire 5 is bent downward through the wire guide 66 and led out of the wire outlet hole 61. The forwardly protruding wire portion 66 provides a larger space for bending the connection wire 5, facilitating the wire outgoing from below, so that the wire outgoing direction of the connection wire 5 can be parallel to the direction of the output shaft 9, as shown in fig. 24. Furthermore, the wire outlet box 6 arranged in this way does not need to manually pass the connecting wire 5 through the wire outlet hole 61 before being assembled to the housing 21 and the cover plate 22, and automation of the assembly of the wire outlet box 6 can be realized. When the connecting wire 5 is in crimping, the wire outlet box 6 is not needed, the operation is more convenient, and the efficiency is high.
The method of assembling the motor 1 according to the present invention will be described below taking the outlet box 6 of the second structure as an example. The method of assembling the motor 1 according to one embodiment of the present invention comprises the steps of: providing a housing 21; assembling the stator assembly 41 into the casing 21; fitting the cover plate 22 to the casing 21 as shown in fig. 20; pressing the end section of the connection wire 5 into the terminal 413 in the housing 4121 as shown in fig. 23; and the outlet box 6 is assembled to the cabinet 21 and the cover plate 22. In the step of pressing the end section of the connection wire 5 into the terminal 413 in the receiving portion 4121, the connection wire 5 is bent downward and led out from the notch 41214 as shown in fig. 5.
As shown in fig. 25 to 26, the third structure of the outlet box 6 is that the outlet box 6 includes a first outlet box 601 and a second outlet box 602, the first outlet box 601 has a U-shape, the first outlet box 601 has a slot 6011 extending from an upper end surface thereof toward a middle portion, and the second outlet box 602 is fitted in the slot 6011 and encloses with the first outlet box 601 a wire outlet hole 61 extending in a front-rear direction located at the middle portion of the first outlet box 601. The wire outlet box 6 arranged in this way can be assembled automatically without manually passing the connecting wire 5 through the wire outlet hole 61 before being assembled to the housing 21 and the cover plate 22. When the connecting wire 5 is in crimping, the wire outlet box 6 is not needed, the operation is more convenient, and the efficiency is high. Alternatively, as shown in fig. 26 and 27, the upper end surface of the terminal receiving portion 412 is provided with a terminal fixing portion 4124, and the snap portion 6021 of the second terminal 602 is engaged with the terminal fixing portion 4124, so that the second terminal 602 can be fitted to the terminal receiving portion 412.
The method of assembling the motor 1 according to the present invention will be described below taking the outlet box 6 of the third structure as an example. The method of assembling the motor 1 according to one embodiment of the present invention comprises the steps of: providing a housing 21; assembling the stator assembly 41 into the casing 21; fitting the cover plate 22 to the casing 21 as shown in fig. 20; pressing the end section of the connection wire 5 into the terminal 413 in the housing 4121 as shown in fig. 28; and the outlet box 6 is assembled to the housing 21 and the cover 22 as shown in fig. 29-30. Wherein the step of assembling the outlet box 6 to the housing 21 and the cover 22 includes assembling the first outlet box 601 to the housing 21 and the cover 22 and then assembling the second outlet box 602 to the terminal receiving part 412.
The following advantages can be achieved by the method for assembling the motor 1 using the three outlet box structures: after the cover plate 22 is assembled to the shell 21, the connecting wire 5 and the assembly outlet box 6 are pressed, so that the connecting wire 5 is not required to be carried with the connecting wire 5 in all working procedures before the connecting wire 5 is pressed, automatic assembly can be realized, and labor cost is reduced.
While the exemplary embodiments of the motor according to the present invention have been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above without departing from the scope of the present invention, and various technical features and structures of the present invention may be combined without departing from the scope of the present invention.
List of reference numerals
1. Motor with a motor housing
2. Motor shell
21. Casing of machine
22. Cover plate
3. Rotor
4. Stator assembly
41. Coil framework
411. Skeleton main body
412. Terminal receiving part
4121. Housing part
41211. Terminal groove
41212. Wire slot
41213. Guide part
41214. Notch
4122. Support part
41221. Boss
41222. Guide part
4123. Wire passing groove
4124. Fixing part of outlet box
413. Terminal for connecting a plurality of terminals
4131. Terminal head
41311. Wire pressing groove
41312. Barb portion
4132. Terminal tail
42. Enamelled wire
5. Connecting wire
6. Outlet box
61. Wire outlet hole
62. Clamping block
63. Clamping strip
64. Groove
65. Line ball boss
66. Wire part
601. First outlet box
602. Second outlet box
6021. Fastening part
7. Gear set
8. Claw pole plate assembly
9. Output shaft
Claims (22)
1. An electric machine, comprising:
The motor shell comprises a shell with an upper end opening and a cover plate matched with the shell, and a notch communicated with the upper end opening is formed in the front side of the shell;
the stator assembly is positioned in the shell and comprises a coil framework and enameled wires wound on the coil framework, the coil framework comprises a framework main body, a terminal receiving part fixedly connected with the framework main body and a plurality of terminals fixed to the terminal receiving part, the terminal receiving part comprises a containing part with a front side opening, and the longitudinal direction of the containing part is parallel to the tangential direction of the framework main body; and
A connecting wire whose end section is connected to the terminal in the accommodation portion,
Wherein the extending direction of the end section of the connecting wire is the same as the longitudinal direction of the accommodating part, and the connecting wire is led out from the middle position of the accommodating part,
Wherein, the accommodation part is located the centre of terminal receiving part, the accommodation part includes terminal groove and wire casing, the terminal groove is configured to hold the terminal head of terminal, the wire casing is configured to hold the connecting wire, the tip section of connecting wire is held in wire casing and terminal head, the terminal receiving part still includes the supporting part that is located the accommodation part both sides, and be located the accommodation part with cross the wire casing between the supporting part, cross the wire casing and be configured to allow stator module's enameled wire to pass through.
2. The electric machine of claim 1, wherein an end section of the connecting wire is pressed into a terminal within the receptacle.
3. The motor according to claim 1, wherein a front end surface of the accommodating portion protrudes more forward than a front end surface of the supporting portion.
4. The electric machine of claim 1, wherein a distance between the outer sides of the support is equal to a width of the cutout of the housing such that the support mates with the cutout when the stator assembly is assembled into the housing.
5. The motor of claim 4, wherein the outer side of the support portion is provided with a boss that abuts the outer side of the housing when the support portion is mated with the cutout.
6. The motor of claim 1, wherein an outer lower portion of the support portion is provided with a guide portion inclined downward.
7. The motor of claim 1 or 2, wherein a height between upper and lower sides in the terminal slot is greater than a height between upper and lower sides in the slot, the height between upper and lower sides in the slot being equal to an outer diameter of the connecting wire.
8. The electric machine of claim 7, wherein the front side edges of the terminal slots and the wire chase are provided with inwardly sloped guides.
9. The motor according to claim 1 or 2, wherein the lower side of the housing portion includes a notch communicating with the front side opening at the middle.
10. The motor according to claim 1 or 2, wherein the terminal includes a terminal head portion and a terminal tail portion integrally formed, the terminal head portion includes a back portion integrally extending with the terminal tail portion and side portions symmetrically provided on both sides of the back portion, wire-pressing grooves are symmetrically provided on the side portions, the wire-pressing grooves are capable of partially peeling or piercing insulation layers of connection wires pressed into the wire-pressing grooves, and the wire-pressing grooves are configured to open toward a front side direction and extend in the front-rear direction when the terminal is assembled to the terminal receiving portion.
11. The electric machine of claim 10, wherein the terminal tail has a width that is greater than twice the thickness.
12. The motor of claim 10, wherein the outer sides of the side portions are symmetrically provided with barb portions configured to mate with terminal barb-mating portions located in the receiving portion.
13. The motor of claim 10, wherein the terminal tail portions extend rearward through openings provided in the receiving portion, are bent in a rearward direction of the terminal receiving portion, and are respectively bent outward.
14. The electric machine of claim 13, wherein the enamel wire of the stator assembly is wound around the terminal tail from an inner side of the terminal tail.
15. The motor of claim 1, further comprising an outlet box provided with an outlet hole, the connecting wire is led out of the motor from the outlet hole, the outlet box is assembled into an opening defined by the notch of the casing and the cover plate, wherein the upper end surface of the outlet box is provided with a clamping block matched with the clamping hole on the cover plate, and the lower end surface of the outlet box is provided with a clamping strip which extends downwards and is matched with the inner side of the notch of the casing.
16. The motor of claim 15, wherein the lower end surface of the outlet box is provided with a groove located outside the clamping strip.
17. The electric machine of claim 16, wherein the grooves are circular arc grooves.
18. The electric machine of claim 15, wherein a rear face of the outlet box corresponding to the terminal receiving portion is provided with a crimping boss mated with the receiving portion of the terminal receiving portion.
19. The electric machine of any one of claims 15-18, wherein the outlet box is integrally formed, the outlet hole passing through the outlet box in a front-to-rear direction at a middle portion of the outlet box.
20. An electric machine as claimed in any one of claims 15 to 18, wherein the outlet box is integrally formed, the outlet box being provided at a lower portion thereof with a forwardly projecting wire portion through which the outlet hole passes downwardly, the connection wire being bent downwardly through the wire portion and led out from the outlet hole.
21. The electric machine according to any one of claims 15 to 18, wherein the outlet box includes a first outlet box having a U-shape, the first outlet box having a slot extending from an upper end surface thereof toward a middle portion, and a second outlet box fitted in the slot and surrounding with the first outlet box an outlet hole extending in a front-rear direction at the middle portion of the first outlet box.
22. A method of assembling an electrical machine according to any one of claims 1-21, comprising the steps of:
Providing a shell;
assembling the stator assembly into the housing;
Assembling the cover plate to the housing;
Connecting the end section of the connecting wire to the terminal within the receiving portion; and
The outlet box is assembled to the cabinet and the cover plate.
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CN110495842A (en) * | 2019-09-30 | 2019-11-26 | 江苏雷利电机股份有限公司 | Motor, water segregator and the dish-washing machine with the water segregator |
CN111941414A (en) * | 2020-08-04 | 2020-11-17 | 武汉海微科技有限公司 | Novel high reduction ratio motor system applicable to vehicle-mounted intelligent interactive robot |
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JP2004055655A (en) * | 2002-07-17 | 2004-02-19 | Nok Corp | Solenoid |
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CN1034376C (en) * | 1993-12-17 | 1997-03-26 | 马渊马达株式会社 | Small electric motor with terminal unit and method for connecting terminal unit |
JP3016552B2 (en) * | 1997-08-19 | 2000-03-06 | 小倉クラッチ株式会社 | Coil assembly |
JP2007068364A (en) * | 2005-09-01 | 2007-03-15 | Sanyo Electric Co Ltd | Coil apparatus |
TWM479548U (en) * | 2014-01-08 | 2014-06-01 | Jyh Eng Technology Co Ltd | Multiple incoming lines connector |
JP6673672B2 (en) * | 2015-11-09 | 2020-03-25 | 株式会社デンソー | motor |
CN106130244B (en) * | 2016-06-30 | 2019-04-30 | 广州万宝集团有限公司 | A kind of linear motor coil leading-out wire structure |
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JP2004055655A (en) * | 2002-07-17 | 2004-02-19 | Nok Corp | Solenoid |
CN103825123A (en) * | 2014-03-10 | 2014-05-28 | 常州乐士雷利电机有限公司 | Terminal, terminal connecting device, motor with terminal and terminal connecting device and assembling method of motor |
CN209358351U (en) * | 2019-03-05 | 2019-09-06 | 江苏雷利电机股份有限公司 | Motor |
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