Motor

Abstract

The motor is started. The motor according to the present embodiment is a motor comprising a stator and a rotor configured to rotate by electromagnetic interaction with the stator, wherein the stator comprises a stator core, a coil wound on the stator core to form a rotating magnetic field, an insulator insulating between the coil and the stator core, a guide member provided on one side of the stator core to guide the direction of drawing out of one end of the coil, and a neutral terminal provided on the guide member to be connected to the other end of the coil, and the guide member may be provided by including a body facing the coil, an inner guide formed to protrude axially from the body, and an outer guide formed to protrude axially from the radially outer side of the inner guide on the body.

Description

Technology Field

[0001] The present invention relates to a motor, and more specifically, to a motor in which the phase terminal of the stator can be omitted. Background Technology

[0002] Generally, a motor is equipped with a stator and a rotor inside a housing, and induces the rotation of the rotor by causing electromagnetic interaction between the stator and the rotor.

[0003] The stator may include a plurality of unit cores and coils wound on each unit core. At this time, a busbar may be provided between the power source and the cores. The busbar may include three phase terminals and a neutral terminal for distributing current. The phase terminals can distribute and supply current of the same phase to a plurality of spaced-apart coils, and the neutral terminals are connected to each phase coil and function as the neutral point of the circuit.

[0004] However, in some cases, these busbars can be manufactured by overmolding them onto the phase terminals; in this case, the manufacturing process is complex, and there were issues with difficult maintenance due to the integrated structure.

[0005] To solve this, a method of manufacturing the busbar body and phase terminals as separate parts and then combining them may be considered. However, even with this method, there is a problem that the structure becomes complex and assembly is difficult in order to secure the insulation distance between the three-phase phase terminals and the neutral terminal while arranging the wiring without interference. Prior art literature

[0006] Republic of Korea Published Patent Application No. 10-2020-0123904 (Published Nov. 02, 2020) The problem to be solved

[0007] The present embodiment aims to provide a motor that improves assembly and reduces costs by omitting phase terminals through a simple structure.

[0008] The present embodiment aims to provide a motor that achieves product weight reduction by suppressing volume increase through a simple structure, while also ensuring operational reliability. means of solving the problem

[0009] According to one aspect of the present invention, the motor comprises a stator and a rotor arranged to rotate by electromagnetic interaction with the stator, wherein the stator comprises: a stator core; a coil wound on the stator core to form a rotating magnetic field; an insulator insulating between the coil and the stator core; a guide member provided on one side of the stator core to guide the direction of drawing out of one end of the coil; and a neutral terminal provided on the guide member to be connected to the other end of the coil; wherein the guide member may be provided by including a body facing the coil, an inner guide formed to protrude axially from the body, and an outer guide formed to protrude axially from the radially outer side of the inner guide on the body.

[0010] The above neutral terminal can be seated and supported between the above inner guide and the above outer guide.

[0011] The inner guide may be provided to include at least one first fixing rib that is formed to extend radially outward and supports the neutral terminal in the circumferential direction.

[0012] The above outer guide may be provided to include at least one second fixing rib that is formed to extend radially outward and supports the neutral terminal in the circumferential direction.

[0013] Either of the inner guide and the outer guide may be provided with a locking part that restricts the axial movement of the neutral terminal.

[0014] The above-mentioned catch portion may be provided to include a support member formed by cutting from either the inner guide or the outer guide, and a protruding member formed to protrude from the support member toward the other of the inner guide and the outer guide.

[0015] The inner guide and the outer guide may be provided on the opposite side of the surface facing the coil on the body.

[0016] The guide member may include a coupling projection formed to protrude from the body toward the insulator, and may be supported by the insulator, and the insulator may be provided with a coupling groove formed to allow the coupling projection to be inserted so as to prevent rotation of the guide member.

[0017] The above guide member may be provided to include a guideway through which one end of the coil is inserted and passes.

[0018] The above guideway is formed to extend in the axial direction, and one side may be connected to the body.

[0019] The above guideway may be provided with a hollow shape having a hollow interior.

[0020] The guide member may be provided with a reinforcing rib that is formed to extend radially, with one end connected to the inner guide and the other end connected to the guide way.

[0021] The above body may be provided with a recess formed by penetrating or cutting so that the other end of the coil passes through.

[0022] The above neutral terminal may be provided by including a fixing part disposed between the inner guide and the outer guide, a first connecting part bent from one side of the fixing part and connected to a first phase coil, a second connecting part bent from the other side of the fixing part and connected to a second phase coil, and a third connecting part extending between one side and the other side of the fixing part and connected to a third phase coil.

[0023] The first connecting part and the second connecting part may be bent radially outward from the fixed part.

[0024] The third connecting portion may be provided to include a first section formed by bending radially outward from the fixed portion, a second section bent from the first section and facing the fixed portion, and a third section bent radially outward from the second section and connected to the coil of the third phase.

[0025] It may further include an insulating tube arranged to wrap at least a portion of the coil and insulating the coils of different phases from each other.

[0026] The stator core includes a plurality of teeth extending radially, and a plurality of coils are provided, each wound on at least two of the teeth, and the insulating tube can wrap the connection portion of each coil between the teeth on which each coil is wound. Effects of the invention

[0027] The motor according to the present embodiment has a simple structure, and by omitting the phase terminal, assembly can be improved and cost reduction can be achieved.

[0028] The motor according to the present embodiment has a simple structure that suppresses volume increase, thereby achieving product weight reduction and ensuring operational reliability. Brief explanation of the drawing

[0029] FIG. 1 is a perspective view showing a motor according to the present embodiment. FIG. 2 is a side view showing a motor according to the present embodiment. FIG. 3 is a bottom view showing a motor according to the present embodiment. FIG. 4 is a perspective view showing the guide member and neutral terminal exploded as a motor according to the present embodiment. FIG. 5 is an exploded perspective view showing a segment of a stator core and an insulator in a motor according to the present embodiment. FIG. 6 is a perspective view showing, from a different direction from FIG. 5, the state in which a segment of the stator core, an insulator, a coil, and a part of the insulating tube are combined in a motor according to the present embodiment. FIG. 7 is a perspective view showing the state in which a neutral terminal is coupled to a guide member in a motor according to the present embodiment. FIG. 8 is a plan view showing a guide member in a motor according to the present embodiment. FIG. 9 is a cross-sectional view taken by cutting the guide member along line I-I of FIG. 8, showing the state in which one end of the coil is guided. FIG. 10 is a cross-sectional view showing a plane obtained by cutting the guide member along the line II-II of FIG. 8. FIG. 11 is a perspective view showing a neutral terminal in a motor according to the present embodiment. Specific details for implementing the invention

[0030] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the concept of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit the illustration of parts unrelated to the description and may slightly exaggerate the size of components to aid understanding.

[0031] FIGS. 1 to 3 are a perspective view, a side view, and a bottom view, respectively, showing a motor according to the present embodiment, and FIG. 4 is a perspective view showing a guide member (100) and a neutral terminal (200) disassembled as a motor according to the present embodiment.

[0032] Referring to FIGS. 1 to 4, the motor according to the present embodiment may include a housing (not shown), a stator fixed inside the housing, and a rotor (not shown) arranged to rotate by electromagnetic interaction with the stator.

[0033] The housing may be composed of a container (not shown) with one end open to accommodate a stator and a rotor inside, and a cover (not shown) coupled to one end of the container to seal the inside.

[0034] The rotor may include a rotor core (not shown), a magnet (not shown) coupled to the circumference of the rotor core or an adjacent pocket (not shown) to impart polarity to the rotor, and a shaft (not shown) coupled to the rotor core and rotating together with it. The rotor may be provided on the radially inner side of the stator. The shaft extends outside the housing to transmit rotational force to the outside when the motor rotates, and bearings (not shown) to rotatably support the rotation axis may be installed in the container and cover through which the shaft passes.

[0035] The stator may include a stator core (10), a coil (20) wound on the stator core (10) to form a rotating magnetic field, an insulator (30) insulating between the coil (20) and the stator core (10), a guide member (100) provided on one side of the stator core (10) to guide the direction of extraction of one end (21) of the coil, a neutral terminal (200) provided on the guide member (100) and connected to the other end (22) of the coil, and an insulating tube (40) provided to surround at least a part of the coil (20) and insulating between coils (20) of different phases.

[0036] FIG. 5 is an exploded perspective view showing a segment (10S) of a stator core (10) and an insulator (30) in a motor according to the present embodiment, and FIG. 6 is a perspective view showing a combined state of a segment (10S) of a stator core (10), an insulator (30), a coil (20), and a part of an insulating tube (40) in a motor according to the present embodiment, from a direction different from FIG. 5.

[0037] Referring to FIGS. 1 to 6, the stator core (10) may be constructed by laminating a single piece or a plurality of steel plates, and may include a roughly annular back yoke (11) and a plurality of teeth (12) that extend radially inward along the circumference of the back yoke (11). Additionally, the back yoke (11) may form an annular structure by combining a plurality of arc-shaped segments (11S). That is, the stator core (10) may be constructed by combining a plurality of segments (10S) in a circumferential direction.

[0038] The stator can be fixed to a housing (not shown) as the stator core (10) is hot-pressed into a container (not shown). To this end, the stator core (10) is pressed into a container in a state where the inner diameter is expanded by heating, and when the container cools and contracts while the stator core (10) is pressed in, the outer surface of the stator core (10) can be fixed by adhering to the inner surface of the container.

[0039] The coil (20) is wound on the teeth (12) of the stator core (10) to form a rotating magnetic field, and the coil (20) and the stator core (10) can be insulated through an insulator (30) made of resin material.

[0040] The insulator may include a first insulator (30A) coupled to one end of the stator core (10) and a second insulator (30B) coupled to the other end of the stator core (10).

[0041] The first insulator (30A) and the second insulator (30B) are provided in multiple numbers arranged along the circumferential direction, and the multiple first insulators (30A) and second insulators (30B) can each be combined at both ends of the stator core (10).

[0042] The insulator may be configured to include a body (31) on which a coil (20) is wound, an inner supporter (32) that supports the coil (20) wound on the body (31) from a radially inner side of the body (31), and an outer supporter (33) that supports the coil (20) wound on the body (31) from a radially outer side of the body (31).

[0043] The body (31) is inserted from the outer end of the stator core (10) toward the inner end and is coupled to the tooth (12), and an uneven structure may be provided on the outer surface of the body (31) so that the coil (20) to be wound may be seated thereon.

[0044] The inner supporter (32) and the outer supporter (33) are each provided to extend circumferentially from the inner and outer ends of the body (31) and to the outer end of the stator core (10) to support the coil (20) wound on the body (31) at the radially inner and outer ends of the body (31).

[0045] The outer supporter (33) may include a coupling groove (34) formed by being recessed at the axial end. A coupling projection (111) of the guide member (100), described later, is inserted into the coupling groove (34) to prevent rotation of the guide member (100).

[0046] Such inner supporter (32) and outer supporter (33) and body (31) can be formed as a single unit during the molding process of the insulator (30).

[0047] The first insulator (30A) is fitted and coupled from the outer side to the inner side of one end of the stator core (10), and the second insulator (30B) is fitted and coupled from the outer side to the inner side of the other end of the stator core (10). Accordingly, the coupling position and coupling direction of the first insulator (30A) and the second insulator (30B) are opposite to each other, and in this state, the teeth (12) of the stator core (10) can be wrapped by the body (31) of the first insulator (30A) and the second insulator (30B).

[0048] Meanwhile, the coil (20) may be composed of a first phase coil (20U), a second phase coil (20V), and a third phase coil (20W). Here, the first phase, the second phase, and the third phase may correspond to the U phase, the V phase, and the W phase, respectively. Also, one or more coils (20) may be provided for each phase.

[0049] Each coil (20: 20U, 20V, 20W) can have one strand wound on at least two teeth (12). Here, at least some of the multiple teeth (12) wound by one strand of coil (20) are not adjacent to each other on the stator core (10).

[0050] For example, when a first phase coil (20U) is wound on a pair of teeth (12), a second phase coil (20V) wound on a tooth (12) and a third phase coil (20W) wound on a tooth (12) may each be placed between the pair of teeth (12) on which the first phase coil (20U) is wound. Accordingly, a connection portion (23) is formed between the plurality of wound teeth (12) for each coil (20: 20U, 20V, 20W).

[0051] At this time, interference may occur between the different phase coils (20) of the connection part (23).

[0052] To prevent interference between coils (20) of different phases, an insulating tube (40) can wrap the connecting portion (23) of each coil (20: 20U, 20V, 20W) between a plurality of teeth (12) on which each coil (20: 20U, 20V, 20W) is wound, and can insulate between coils (20) of different phases. The insulating tube (40) can be fitted and joined with the coil (20), or provided in the form of a tape and wound around the connecting portion (23). Through this, the operational reliability of the motor can be ensured.

[0053] One end (21: 21U, 21V, 21W) and the other end (22: 22U, 22V, 22W) of each coil (20: 20U, 20V, 20W) can each be drawn out to one side (upper side in FIG. 2) of the stator core (10). At this time, one end of each coil (21: 21U, 21V, 21W) can be directly connected to a power source, such as an inverter of a control device (not shown), to receive currents of the U phase, V phase, and W phase, respectively. And the other end of each coil (22: 22U, 22V, 22W) can be connected to a neutral terminal (200).

[0054] A first phase coil (20U), a second phase coil (20V), and a third phase coil (20W) can be sequentially wound on each of the multiple teeth (12) on the stator core (10). At this time, one end of each phase coil (21: 21U, 21V, 21W) can be arranged adjacent to each other. Accordingly, the other end of each phase coil (22: 22U, 22V, 22W) can also be arranged adjacent to each other. Through this, the increase in volume of the neutral terminal (200) can be suppressed, and the motor can be made lighter and cost reduced.

[0055] Below, the structure and shape of the guide member (100) that guides the extraction direction of one end of the coil (21) will be described.

[0056] FIG. 7 is a perspective view showing a state in which a neutral terminal (200) is coupled to a guide member (100) in a motor according to the present embodiment, FIG. 8 is a plan view showing a guide member (100) in a motor according to the present embodiment, and FIG. 9 is a cross-sectional view taken by cutting the guide member (100) along line I-I of FIG. 8, showing a state in which one end of a coil (21) is guided.

[0057] Referring to FIGS. 1, FIGS. 4 and FIGS. 7 through 9, a guide member (100) is provided on one side (upper side with reference to FIG. 2) of a stator core (10) to guide the direction of extraction of one end of a coil (21). To this end, the guide member (100) may include a body (110) whose outer circumference is supported by an insulator (30) and whose surface faces the coil (20), and a guide way (150) through which the one end of the coil (21) is inserted and passes.

[0058] The body (110) is made of a resin material and can be formed in a roughly annular shape. One side of the body (110) may be provided with a coupling projection (111) that protrudes toward the insulator (30). The coupling projection (111) is inserted and coupled into the coupling groove (34) of the insulator (30) to prevent rotation of the guide member (100) and to improve the coupling force between the insulator (30) and the guide member (100).

[0059] The guideway (150) is formed to extend in the axial direction, and one side may be connected to the other side (upper surface based on FIG. 2) of the body (110). The coil (20) is inserted into one side of the guideway (150), passes through, and is then pulled out to the other side. To this end, the guideway (150) is provided with a hollow shape with an empty interior.

[0060] The guideway (150) can be configured such that the diameter of the inlet (1501a, 1502a, 1503a) into which the coil end (21) enters is larger than the diameter of the outlet (1501b, 1502b, 1503b) into which the coil end (21) exits. Accordingly, the coil end (21) can smoothly enter the guideway (150) and at the same time be precisely exited toward the control device, thereby improving assembly.

[0061] A plurality of guideways (150) are provided so that any one of the first to third phase coils (20W) can be inserted and passed through each. For example, the plurality of guideways (150) may include a first guideway (1501) into which the first phase coil (20U) is inserted, a second guideway (1502) into which the second phase coil (20V) is inserted, and a third guideway (1503) into which the third phase coil (20W) is inserted.

[0062] Each coil (20) of each phase can be drawn out at adjacent ends while passing through the first guideway (1501), the second guideway (1502), and the third guideway (1503). To this end, the first guideway (1501) may include an inclined portion (151) that is inclined toward the second guideway (1502) between the inlet (1501a) and the outlet (1501b). And the third guideway (1503) may include an inclined portion (151) that is inclined toward the second guideway (1502) between the inlet (1503a) and the outlet (1501b). In this way, the first guideway (1501) to the third guideway (1503) cooperate with each other to bring out one end of each phase coil (21: 21U, 21V, 21W) adjacent to each other, thereby minimizing the volume of the power supply to which the coil (20) is connected on the control device, and achieving lightweighting and cost reduction.

[0063] However, it is not limited thereto, and the second guideway (1502) and the third guideway (1503) may include an inclined portion (151) inclined toward the first guideway (1501), or the first guideway (1501) and the second guideway (1502) may include an inclined portion (151) inclined toward the third guideway (1503).

[0064] Additionally, the guide member (100) may include a first reinforcing rib (152) that extends in the axial direction and is connected to an adjacent guideway (150) on both sides in the circumferential direction. The rigidity of the guideway (150) may be improved through the first reinforcing rib (152). Alternatively, the guideway (150) may be provided as a single unit, and a guide hole through which each coil (20: 20U, 20V, 20W) is inserted may be formed.

[0065] And the body (110) may include a recess (112) formed by penetrating or cutting through the outer side so that the coil ends (22: 22U, 22V, 22W) pass through. As shown in the drawing, a plurality of recesses (112) are provided so that the coil ends (22: 22U, 22V, 22W) of different phases can each pass through.

[0066] The recess (112) may include a first recess (1121) through which the first phase coil end (22U) passes, a second recess (1122) through which the second phase coil end (22V) passes, and a third recess (1123) through which the third phase coil end (22W) passes. At this time, the connecting projection (111) may be provided between the adjacent guideway (150) and the recess (112) along the circumference of the body (110) or between adjacent recesses (112).

[0067] Meanwhile, although not shown in the drawing, the guideway (150) may be provided without an inclined portion (151). In this case, the connecting projection (111) may be provided along the circumference of the body (110) between adjacent guideways (150) and recesses (112) or between adjacent guideways (150). Additionally, the first to third recesses (1121, 1122, 1123) may be provided integrally so that all three phase coil ends (22; 22U, 22V, 22W) can pass through. Through this, the volume of the body (110) can be reduced to achieve weight reduction.

[0068] Below, the shape of the guide member (100) and the coupling structure with the neutral terminal (200) will be described.

[0069] FIG. 10 is a cross-sectional view showing a plane in which the guide member (100) is cut along the line II-II of FIG. 8.

[0070] Referring to FIGS. 1, 4, 7, 8 and 10, the guide member (100) may include an inner guide (120) formed to protrude axially from the body (110), an outer guide (130) formed to protrude axially from the radially outer side of the inner guide (120) on the body (110), a locking part (140) that restricts the axial movement of the neutral terminal (200), and a fixing rib formed to extend radially.

[0071] The inner guide (120) may be positioned adjacent to the inner circumference on the opposite side of the one side of the body (110) facing the coil (20), and may be formed in a roughly annular shape, but is not limited thereto, and may be provided in a linear, arc-shaped, or other various shapes as long as it can support the neutral terminal (200) in cooperation with the outer guide (130).

[0072] The outer guide (130) can be positioned radially outward from the inner guide (120) on the other side of the body (110). Accordingly, the neutral terminal (200) is seated on the other side of the body (110) between the inner guide (120) and the outer guide (130), thereby restricting radial movement through mutual cooperation between the inner guide (120) and the outer guide (130).

[0073] In order for the neutral terminal (200) to be connected to the other end of the coil (22) from the outside in the radial direction of the outer guide (130), the outer guide (130) may be provided in an arc shape, but is not limited thereto and may be provided in a shape corresponding to that of the inner guide (120) so as to support the neutral terminal (200) in cooperation with the inner guide (120).

[0074] The size of the gap between the inner guide (120) and the outer guide (130) is preferably made equal to the radial thickness of the neutral terminal (200), particularly the fixing part (201) described later, but it may be made slightly larger or smaller.

[0075] The catch portion (140) may include a support member (141) formed by cutting from either the inner guide (120) or the outer guide (130), and a protruding member (142) formed to protrude from the support member (141) toward the other of the inner guide (120) and the outer guide (130).

[0076] The support member (141) may be formed by cutting both sides from the inner guide (120) or the outer guide (130). Since the neutral terminal (200) must be positioned between the protruding member (142) and the other side of the body (110) to restrict axial movement, the support member (141) may be extended further axially than the inner guide (120) as needed. As the support member (141) is formed by cutting both sides in this manner, the neutral terminal (200) can be easily deformed when coupled to the guide member (100), thereby improving assembly ease.

[0077] The protruding member (142) may protrude from the end of the support member (141) toward the opposing outer guide (130) or inner guide (120). At this time, the protruding member (142) does not necessarily have to protrude from the end of the support member (141), but this has the advantage of minimizing the volume of the support member (141).

[0078] With the neutral terminal (200) coupled to the guide member (100), one side of the protruding member (142) (the lower side in reference to FIG. 10) may face or contact the neutral terminal (200). Accordingly, the other side of the body (110) and the one side of the protruding member (142) may cooperate with each other to restrict the axial movement of the neutral terminal (200).

[0079] Meanwhile, among the inner guide (120) and the outer guide (130), the other one in which the locking part (140) is not formed may include a chamfer (not given a reference numeral) that is tapered at the end of the surface facing the one in which the locking part (140) is formed (upper end in FIG. 10). Through this, when the neutral terminal (200) is coupled to the guide member (100), assembly is improved, and at the same time, the deformation of the locking part (140) is mitigated, thereby improving durability.

[0080] The fixed rib may include at least one of a first fixed rib (121) extending radially outward from the inner guide (120) and a second fixed rib (131) extending radially outward from the outer guide (130).

[0081] FIG. 7 illustrates that a pair of first fixed ribs (121) and second fixed ribs (131) are provided, and that circumferential movement is restricted by contacting one side and the other side of the neutral terminal (200), respectively, but this is not limited thereto, and the neutral terminal (200) may be coupled between a pair of first fixed ribs (121), and the pair of first fixed ribs (121) may restrict circumferential movement of the neutral terminal (200) by having sides facing each other along the near circumference contact the neutral terminal (200).

[0082] As another example, a neutral terminal (200) can be coupled to the outside of a pair of second fixed ribs (131), and the opposite sides of the pair of second fixed ribs (131) facing each other along the near circumference can be in contact with the neutral terminal (200) to restrict the movement of the neutral terminal (200) in the circumferential direction.

[0083] Alternatively, the first fixed rib (121) and the second fixed rib (131) may cooperate with each other on one side or the other side of the neutral terminal to restrict the circumferential movement of the neutral terminal (200).

[0084] Alternatively, the fixed rib may not extend radially from the inner guide (120) or the outer guide (130), but may be formed to protrude axially from the body (110). However, if the fixed rib extends from the inner guide (120) or the outer guide (130), there is an advantage that the rigidity of the guide member (100) is improved.

[0085] In this way, the guide member (100) can prevent rotation by inserting the coupling projection (111) into the coupling groove (34) of the insulator (30), and can also restrict movement by supporting the neutral terminal (200) in the radial, axial, and circumferential directions. As the movement of the neutral terminal (200) is restricted, it can be stably connected to the other end of the coil (22), thereby ensuring the operational reliability of the motor.

[0086] Meanwhile, the guide member (100) may be provided with a stepped portion (170) that protrudes from the body (110) between the inner guide (120) and the outer guide (130). As the stepped portion (170) has a different height from the other side of the body (110), the neutral terminal (200) and the body (110) may be spaced apart from each other while the neutral terminal (200) is coupled to the guide member (100). Additionally, the stepped portion (170) may also be provided between the first fixed rib (121) and the second fixed rib (131), thereby supporting the first connection portion (210) and the third connection portion (230) described later.

[0087] Additionally, the guide member (100) may include a second reinforcing rib (160) that is formed to extend radially, with one end connected to an inner guide (120) and the other end connected to a guideway (150). Multiple second reinforcing ribs (160) may be provided, and each of the multiple reinforcing ribs may have its other end connected to a first guideway (1501), a second guideway (1502), and a third guideway (1503). The rigidity of the guide member (100) can be improved through these second reinforcing ribs (160).

[0088] The body (110), the connecting projection (111), the recess (112), the inner guide (120), the outer guide (130), the locking part (140), the guide way (150), the second reinforcing rib (160), and the stepped part (170) can be formed integrally with each other during the molding process of the guide member (100).

[0089] The shape and structure of the neutral terminal (200) will be described below.

[0090] FIG. 11 is a perspective view showing a neutral terminal (200) in a motor according to the present embodiment.

[0091] Referring to FIGS. 1, FIGS. 4, FIGS. 7 and FIGS. 11, the neutral terminal (200) may include a fixed part (201) positioned between an inner guide (120) and an outer guide, a first connecting part (210) bent from one side of the fixed part (201) and connected to a first phase coil (20U), a second connecting part (220) extended between one side and the other side of the fixed part (201) and connected to a second phase coil (20V), and a third connecting part (230) bent from the other side of the fixed part (201) and connected to a third phase coil (20W).

[0092] The fixed part (201) forms the body of the neutral terminal (200) and may be provided in an arc shape, but is not limited thereto; it may be provided in various shapes as needed, such as a curved shape or a linear shape. The fixed part (201) may be coupled between the inner guide (120) and the outer guide (130) and supported in the radial and axial directions.

[0093] The first connecting part (210) and the third connecting part (230) are each formed by bending outward in the radial direction from one side (right side in FIG. 11) and the other side (left side in FIG. 11) of the fixed part (201). The ends of the first connecting part (210) and the third connecting part (230) can each be formed in a curved shape, and can wrap around the other end of the first phase coil (20U) and the other end of the third phase coil (20W) when the motor is assembled thereon. In addition, the first connecting part (210) and the third connecting part (230) can each be positioned between the first fixed rib (121) and the second fixed rib (131) and supported in the circumferential direction.

[0094] The second connecting part (220) may include a first section (221) formed by bending outward between one side and the other side of the fixed part (201), a second section (222) bent from the first section (221) and facing the fixed part (201), and a third section (223) bent radially outward from the second section (222) and connected to the second phase coil (20V).

[0095] The first section (221) is formed by extending axially from the fixed part (201) and bending outward in the radial direction. When the neutral terminal (200) and the guide member (100) are combined, the first section (221) can be supported axially by the outer guide (130).

[0096] The second section (222) may be provided in a roughly 'L' shape, and an outer guide (130) may be positioned between the second section (222) and the fixed part (201) while the neutral terminal (200) and the guide member (100) are combined. Accordingly, it may be supported radially by the outer guide (130). However, the shape of the second section (222) is not limited thereto, and the third section (223) may be formed by bending the second section (222) without extending in the circumferential direction, and the third section (223) may include various other shapes that can be connected to the other end of the second phase coil (20V).

[0097] The third section (223) has a curved end formed to wrap around the other end of the second phase coil (20V). Through this, the neutral terminal (200) can be stably connected to the coil (20), thereby ensuring operational reliability.

[0098] As such, the motor according to the present embodiment can have each coil (20: 20U, 20V, 20W) wound on at least two teeth (12) through the shape and coupling structure of the guide member (100) and the neutral terminal (200), thereby allowing three phase coil ends (21: 21U, 21V, 21W) to be arranged adjacent to each other. Accordingly, the three phase coil ends (21: 21U, 21V, 21W) can be easily connected to a control device (not shown), so the phase terminal can be omitted, and assembly can be improved and cost reduced. Explanation of the symbols

[0099] 10: Stator Core 10S: Segment 11: Back yoke 11S: Segment 12: Tis 20: Coil 20U: First phase coil 20V: Phase 2 coil 20W: Phase 3 coil 21: Coil first 21U: First phase coil first 21V: Phase 2 coil 11W: Phase 3 coil 1 22: Coil end 22U: First phase coil end 22V: Second phase coil end 22W: Third phase coil end 23: Connection 30: Insulator 30A: First insulator 30B: Second insulator 31: Body 32: Medial supporter 33: Lateral supporter 34: Connecting groove 40: Insulation tube 100: Guide missing 110: Body 111: Connecting protrusion 112: Recess 1121: First Recess 1122: 2nd Recess 1123: 3rd Recess 120: Inner guide 121: First fixing rib 130: Outer guide 131: Second fixing rib 140: Catching part 141: Support member 142: Protruding member 150: Guideway 1501: First Guideway 1502: Second Guideway 1503: Third Guideway 1501a, 1502a, 1503a: Inlet 1501b, 1502b, 1503b: Outlet 151: Inclined section 152: First reinforcing rib 160: Second reinforcing rib 170: Step section 200: Jungseong Terminal 201: Fixed section 210: First connection part 220: Second connection part 221: First section 222: Section 2 223: Section 3 230: Third connection

Claims

Claim 1 A motor comprising a stator and a rotor arranged to rotate by electromagnetic interaction with said stator, wherein the stator comprises: a stator core; a coil wound on said stator core to form a rotating magnetic field; an insulator insulating between said coil and the stator core; and a guide member provided on one side of said stator core to guide the drawing direction of one end of said coil. A motor comprising: a neutral terminal provided on the guide member and connected to the other end of the coil; wherein the guide member comprises a body facing the coil, an inner guide formed to protrude axially from the body, an outer guide formed to protrude axially from the radially outer side of the inner guide on the body, and a guideway through which one end of the coil is inserted and passes; wherein the guideway comprises a first guideway into which a first phase coil is inserted, a second guideway into which a second phase coil is inserted, and a third guideway into which a third phase coil is inserted; and at least one of the first guideway and the third guideway comprises an inclined portion formed to be inclined toward the second guideway. Claim 2 A motor comprising a stator and a rotor arranged to rotate by electromagnetic interaction with said stator, wherein the stator comprises: a stator core; a coil wound on said stator core to form a rotating magnetic field; an insulator insulating between said coil and the stator core; a guide member provided on one side of said stator core to guide the drawing direction of one end of said coil; and a neutral terminal provided on said guide member to be connected to the other end of said coil. A motor comprising: a guide member including a body facing the coil, an inner guide formed to protrude axially from the body, and an outer guide formed to protrude axially from the radially outer side of the inner guide on the body; a neutral terminal including a fixing part disposed between the inner guide and the outer guide, a first connecting part bent from one side of the fixing part and connected to a first-phase coil, a second connecting part extending between one side and the other side of the fixing part and connected to a second-phase coil, and a third connecting part bent from the other side of the fixing part and connected to a third-phase coil; and the second connecting part including a first section bent radially outward from the fixing part, a second section bent from the first section and facing the fixing part, and a third section bent radially outward from the second section and connected to the second-phase coil. Claim 3 In claim 1 or 2, the neutral terminal is a motor seated and supported between the inner guide and the outer guide. Claim 4 In paragraph 3, the motor comprises at least one first fixed rib that is formed to extend radially outwardly and supports the neutral terminal in the circumferential direction. Claim 5 In paragraph 3, the motor comprises at least one second fixed rib that is formed to extend radially outwardly and supports the neutral terminal in the circumferential direction. Claim 6 In paragraph 3, the motor, wherein either the inner guide and the outer guide includes a locking part that restricts the axial movement of the neutral terminal. Claim 7 In claim 6, the motor comprises a support member formed by cutting from either the inner guide or the outer guide, and a protruding member formed to protrude from the support member toward the other of the inner guide and the outer guide. Claim 8 In paragraph 3, the inner guide and the outer guide are a motor provided on the side opposite to the surface facing the coil on the body. Claim 9 A motor according to claim 1 or 2, wherein the guide member includes a coupling projection formed to protrude from the body toward the insulator, is supported by the insulator, and the insulator includes a coupling groove formed to allow the coupling projection to be inserted so as to prevent rotation of the guide member. Claim 10 In paragraph 2, the guide member is a motor comprising a guideway through which one end of the coil is inserted and passes. Claim 11 In claim 1 or 10, the guideway is formed to extend axially, and one side of the motor is connected to the body. Claim 12 In Clause 11, the above guideway is a motor provided with a hollow shape having a hollow interior. Claim 13 A motor according to claim 1 or 10, wherein the guide member is formed to extend radially and includes a reinforcing rib having one end connected to the inner guide and the other end connected to the guide way. Claim 14 A motor according to claim 1 or 2, wherein the body comprises a recess formed by penetrating or cutting so that the other end of the coil passes through. Claim 15 In claim 1, the neutral terminal comprises a motor including a fixed part disposed between the inner guide and the outer guide, a first connecting part bent from one side of the fixed part and connected to a first phase coil, a second connecting part extending between one side and the other side of the fixed part and connected to a second phase coil, and a third connecting part bent from the other side of the fixed part and connected to a third phase coil. Claim 16 In paragraph 2 or paragraph 15, the first connecting part and the third connecting part are a motor that is bent radially outward from the fixed part. Claim 17 A motor according to claim 1 or 2, further comprising an insulating tube arranged to surround at least a portion of the coil and insulating the coils of different phases from each other. Claim 18 In claim 17, the stator core comprises a plurality of teeth extending radially, the coils are provided in a plurality and are each wound on at least two of the teeth, and the insulating tube surrounds the connection portion of each coil between the teeth on which each coil is wound.

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