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US-12620863-B2 - Busbar and motor comprising same

US12620863B2US 12620863 B2US12620863 B2US 12620863B2US-12620863-B2

Abstract

An embodiment provides a motor comprising: a stator; a rotor arranged to correspond to the stator; a shaft coupled to the rotor; and a busbar disposed above the stator, wherein: the busbar comprises a busbar body and a plurality of busbar terminals disposed in the busbar body; each of the busbar terminals comprises a body part and a power terminal part coupled to the body part; the body part comprises a body, a plurality of terminal portions disposed in the body, and a protrusion protruding in the shaft direction from the upper surface of the body; and one surface of the lower portion of the power terminal part comes into contact with the inner surface of the protrusion. Accordingly, the motor uses the busbar terminal having the structure in which the power terminal part is coupled to the body part, and thus scraps produced during the formation of the busbar terminal can be minimized.

Inventors

  • Seong Jin Kim
  • Min Oak KIM

Assignees

  • LG INNOTEK CO., LTD.

Dates

Publication Date
20260505
Application Date
20210630
Priority Date
20200703

Claims (9)

  1. 1 . A motor comprising: a stator; a rotor disposed to correspond with the stator; a shaft coupled to the rotor; and a busbar disposed above the stator, wherein the busbar includes a busbar body and a plurality of busbar terminals disposed on the busbar body, wherein each of the busbar terminals includes a body part and a power terminal part coupled to the body part, wherein the body part includes a body, a plurality of terminals disposed on the body, and a protrusion protruding from an upper surface of the body in an axial direction, wherein one lower surface of the power terminal part is in contact with an inner surface of the protrusion, wherein body parts of the plurality of busbar terminals are disposed to be spaced a predetermined gap (G) away from each other in a radial direction; and wherein a partial inner portion of the power terminal part overlaps with the gap (G) in the axial direction, wherein the protrusion further includes a guide which guides the power terminal part, and wherein the guide is provided as two protrusions disposed on an upper surface of the protrusion to be spaced apart from each other in a circumferential direction.
  2. 2 . The motor of claim 1 , wherein a lower end of the power terminal part is disposed to be spaced a predetermined distance (d) away from the upper surface of the body in the axial direction.
  3. 3 . The motor of claim 2 , wherein the power terminal part includes: a first region disposed to be spaced the predetermined distance (d) away from the upper surface of the body; a second region extending from an end portion of the first region in a radial direction; and a third region extending from an end portion of the second region in the axial direction, wherein an outer surface of the first region is in contact with the inner surface of the protrusion, and a lower surface of the second region is in contact with an upper surface of the protrusion.
  4. 4 . The motor of claim 2 , wherein the power terminal part includes: a first region disposed to be spaced the predetermined distance (d) away from the upper surface of the body; a second region extending from an end portion of the first region in a radial direction; a third region extending from an end portion of the second region in the axial direction; and an embossing protruding from an outer surface of the first region, wherein the embossing is in contact with the inner surface of the protrusion, and a lower surface of the second region is in contact with an upper surface of the protrusion.
  5. 5 . The motor of claim 4 , wherein the embossing is formed in a hemispherical shape and is in point contact with the inner surface of the protrusion.
  6. 6 . A motor comprising: a stator; a rotor disposed to correspond with the stator; a shaft coupled to the rotor; and a busbar disposed above the stator, wherein the busbar includes a busbar body and a plurality of busbar terminals disposed on the busbar body, wherein each of the busbar terminals includes a body part and a power terminal part coupled to the body part, wherein the body part includes a body, a plurality of terminals disposed on the body, and a protrusion protruding from an upper surface of the body in an axial direction, wherein one lower surface of the power terminal part is in contact with an inner surface of the protrusion, wherein body parts of the plurality of busbar terminals are disposed to be spaced a predetermined gap (G) away from each other in a radial direction, wherein a partial inner portion of the power terminal part overlaps with the gap (G) in the axial direction, wherein: the protrusion includes a first protruding part formed to extend from the upper surface of the body in the axial direction and a second protruding part extending to be bent outward from an end portion of the first protruding part; the power terminal part includes a first region disposed to be spaced a predetermined distance (d) away from the upper surface of the body, a second region extending from an end portion of the first region in a radial direction, and a third region extending from an end portion of the second region in the axial direction; and an inner surface of the second protruding part is in contact with an outer surface of the first region.
  7. 7 . The motor of claim 6 , wherein a thickness (t 2 ) of the second protruding part in the radial direction is smaller than a thickness (t 1 ) of the first protruding part in the radial direction.
  8. 8 . The motor of claim 6 , wherein the protrusion further includes a guide which guides the power terminal part.
  9. 9 . The motor of claim 8 , wherein the guide is provided as two protrusions disposed on an upper surface of the protrusion to be spaced apart from each other in a circumferential direction.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS This application is a U.S. National Stage Application under 35 U.S.C. § 371 of PCT Application No. PCT/KR2021/008254, filed Jun. 30, 2021, which claims priority to Korean Patent Application Nos. 10-2020-0081990, filed Jul. 3, 2020 and 10-2020-0149834, filed Nov. 11, 2020, whose entire disclosures are hereby incorporated by reference. TECHNICAL FIELD The embodiment relates to a busbar and a motor including the same. BACKGROUND ART A motor may include a busbar disposed on a stator. In this case, the busbar may include a busbar terminal coupled to an end portion of a coil disposed on the stator. In a conventional busbar terminal, a finished busbar terminal may be formed through a method of providing a primary part formed by a primary process of cutting one plate member and bending the primary part. However, the conventional busbar terminal has a problem that many scraps are generated during the forming process of cutting one plate member. In addition, one side of the conventional busbar terminal may be coupled to a component such as a connector for applying external power. Accordingly, there is a problem of increasing production costs by performing a plating process on the entire conventional busbar terminal. In addition, due to a complex structure of the conventional busbar terminal according to several times of bending processes, the plating process should be performed in a rack plating method, and thus there is a problem that the production costs are further increased. Accordingly, there is a request for the development of a busbar terminal structure which can reduce plating costs while minimizing an amount of scraps. DISCLOSURE Technical Problem An embodiment is directed to providing a busbar formed by minimizing generation of scraps using a busbar terminal implemented by coupling two members, and a motor including the same. An embodiment is directed to providing a busbar having an embossing structure which increases a fixing force between two members when the two members constituting a busbar terminal are fused, and a motor including the same. In addition, an embodiment is directed to providing a motor compatibly used at various connection positions of external power sources. Technical Solution One aspect of the present invention provides a motor including a stator, a rotor disposed to correspond with the stator, a shaft coupled to the rotor, and a busbar disposed above the stator, wherein the busbar includes a busbar body and a plurality of busbar terminals disposed on the busbar body, each of the busbar terminals includes a body part and a power terminal part coupled to the body part, the body part includes a body, a plurality of terminals disposed on the body, and a protrusion protruding from an upper surface of the body in an axial direction, and one lower surface of the power terminal part is in contact with an inner surface of the protrusion. In this case, a lower end of the power terminal part may be disposed to be spaced a predetermined distance (d) away from the upper surface of the body in the axial direction. Another aspect of the present invention provides a busbar including a busbar body and a plurality of busbar terminals which are coupled through a fusing process, wherein each of the busbar terminals includes a body part and a power terminal part coupled to the body, the body part includes a body, a plurality of terminals disposed on the body, and a protrusion protruding from an upper surface of the body in an axial direction, and one lower surface of the power terminal part is in contact with an inner surface of the protrusion. The power terminal part may include a first region disposed to be spaced the predetermined interval (d) away from the upper surface of the body, a second region extending from an end portion of the first region in a radial direction, and a third region extending from an end portion of the second region in the axial direction, wherein an outer surface of the first region may be in contact with the inner surface of the protrusion, and a lower surface of the second region may be in contact with an upper surface of the protrusion. The power terminal part may include a first region disposed to be spaced the predetermined distance (d) away from the upper surface of the body, a second region extending from an end portion of the first region in a radial direction, a third region extending from an end portion of the second region in the axial direction, and an embossing protruding from an outer surface of the first region, wherein the embossing formed in a hemispherical shape may be in contact with the inner surface of the protrusion. The protrusion may include a first protruding part formed to extend from the upper surface of the body in the axial direction and a second protruding part extending to be bent outward from an end portion of the first protruding part, the power terminal part may include a first region disposed to be