KR102477827B1 - Terminal assembly and Motor having the same - Google Patents

Abstract

The present invention relates to a body including a first contact inlet and a second contact inlet, a power terminal inserted into the first contact inlet, and a terminal plate exposed to the second contact inlet and connected to the power terminal and including a seating portion. And by providing a terminal assembly seated on the seating portion and including a terminal portion and a ground portion formed by bending at the terminal portion and protruding from the terminal portion, the bus bar terminal and the power terminal can be effectively connected in a narrow space. Advantageous effect to provide.

Description

Terminal assembly and motor including the same {Terminal assembly and Motor having the same}

The present invention relates to a terminal assembly and a motor including the same, and more particularly, to a terminal assembly for connecting power to a motor and a motor manufacturing method including the same.

A motor is a device that converts electrical energy into rotational energy by using the force received by a conductor in a magnetic field. A typical motor includes a shaft formed to be rotatable, a rotor coupled to the shaft, and a stator fixed to a housing. A stator is installed with a gap along the circumference of the rotor, and a coil forming a rotating magnetic field is wound on the stator.

In the case of a split-core stator, an annular bus bar (BUSBAR) is provided on the stator. The coil of the stator is electrically connected to the bus bar through the coil terminal. Bus bar terminals to which power supplies of different polarities are connected are formed on these bus bars.

The bus bar terminal is connected to a power terminal for connecting power.

However, the bus bar terminal and the power terminal have a problem in that it is very difficult to implement a connection structure due to space limitations of the bus bar mold. In addition, in order to provide a shield terminal that implements grounding in the motor, a separate connection terminal structure must be prepared or a wire leading to the bolting area must be prepared. Such a terminal configuration has a problem in that manufacturing cost increases due to the addition of separate parts and productivity greatly decreases due to a complicated manufacturing process.

Accordingly, the present invention is to solve the above problems, and an object of the present invention is to provide a terminal assembly capable of effectively connecting a bus bar terminal and a power terminal in a narrow space and a motor including the same.

Another object of the present invention is to provide a terminal assembly capable of simplifying the grounding structure of a shield terminal and a motor including the same.

Another object of the present invention is to provide a terminal assembly that increases the structural safety of the shield terminal's grounding configuration and a motor including the same.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

The present invention for achieving the above object is a body including a first contact inlet and a second contact inlet, a power terminal inserted into the first contact inlet, and exposed to the second contact inlet and connected to the power terminal It is possible to provide a terminal assembly including a terminal plate including a seating portion and a ground portion seated on the seating portion, formed by being bent at the terminal portion and having a protruding projection formed thereon.

Preferably, the power terminal and the terminal plate may be coupled vertically.

Preferably, the terminal plate may be symmetrically disposed about the power terminal.

Preferably, the seating portion may be provided at the center of the terminal plate.

Preferably, the terminal plate may have a hole into which the power terminal is inserted.

Preferably, the terminal plate includes a first plate disposed on the left side and a second plate disposed on the right side with respect to the seating portion, and the seating portion is higher than the first plate and the second plate in a height direction. Can be placed low.

Preferably, a shield accommodating portion accommodating the shield terminal may be included in the center of the body.

Preferably, the ground portion may include a bottom portion formed by bending the terminal portion and a ground connection portion formed by bending the bottom portion to face the terminal portion and having the holding protrusion formed therein.

Preferably, the shield accommodating portion may include a fixing bar formed across both sidewalls of the shield accommodating portion and positioned between the terminal portion and the ground connection portion.

Another invention for achieving the above object is a housing, a stator disposed inside the housing, a rotor disposed inside the stator, a rotating shaft coupled to the rotor, a bus bar disposed above the stator, and a first A body including a contact inlet and a second contact inlet, a power terminal inserted into the first contact inlet, a terminal plate exposed to the second contact inlet, connected to the power terminal, and including a seating portion, and the seating portion A motor including a terminal assembly including a shield terminal seated on the housing and an elastic conductor connecting the shield terminal and the housing may be provided.

Preferably, the shield terminal as a motor is seated on the seating portion, and may include a terminal portion and a ground portion formed by being bent at the terminal portion and having a protrusion protruding from the terminal portion.

Preferably, the ground portion may include a bottom portion formed by bending the terminal portion and a ground connection portion formed by bending the bottom portion to face the terminal portion and having the holding protrusion formed therein.

Preferably, the elastic conductor may be coupled to the ground connection portion so as to be caught on the protrusion.

Preferably, a ground groove is concavely formed on an upper surface of the housing, and the elastic conductor may be inserted into the ground groove.

Preferably, the elastic conductor may be connected to the ground connection portion and the ground groove so that restoring force acts in a radial direction about the rotation axis.

According to one embodiment of the present invention, by providing a terminal plate in contact with the power terminal and the terminal of the bus bar, an advantageous effect of effectively connecting the bus bar terminal and the power terminal in a narrow space is provided.

In addition, according to an embodiment of the present invention, the grounding structure of the shield terminal is simplified by providing an area where the shield terminal can be seated and configured such that the grounding portion of the seated shield terminal is coupled to the top of the housing, thereby reducing manufacturing costs. It provides beneficial effects of saving and simplifying the manufacturing process.

In addition, according to one embodiment of the present invention, by connecting the shield terminal and the housing and providing an elastic conductor that is elastically pressed to the housing, it is possible to increase the contactability between the shield terminal and the terminal plate and the coupling property with the housing, so product design It provides an advantageous effect of further simplifying the ease of and manufacturing process.

In addition, according to one embodiment of the present invention, by forming a fixing bar for axially fixing the shield terminal to the body including the terminal plate, the connection configuration between the shield terminal and the housing is excluded to simplify the grounding structure of the shield terminal, It provides an advantageous effect of simplifying the manufacturing process.

1 is a view showing a motor according to a preferred embodiment of the present invention;
2 is a view showing a terminal assembly mounted on the motor of FIG. 1;
3 is a view showing a terminal assembly coupled to a terminal of a bus bar;
Figure 4 shows the terminal assembly shown in Figure 2;
5 is a diagram showing a power terminal and a terminal plate;
6 is a view showing a shield terminal coupled to a seating part;
7 is a diagram showing a shield terminal;
8 is a view showing an elastic conductor.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. And the terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventor appropriately defines the concept of terms in order to explain his/her invention in the best way. Based on the principle that it can be done, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention. And, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a view showing a motor according to a preferred embodiment of the present invention.

Referring to FIG. 1, a motor according to a preferred embodiment of the present invention includes a terminal assembly 10, a housing 20, a stator 30, a rotor 40, a rotation shaft 50, and a bus bar. (60) may be included.

The stator 30 is coupled to the housing 20, and a rotor 40 may be disposed inside the stator 30. A rotating shaft 50 may be coupled to the central portion of the rotor 40 . A coil is wound around the stator 30 to have a magnetic pole, and the rotor 40 rotates and the rotating shaft 50 rotates at the same time by the magnetic field formed by winding the coil.

First, the stator 30 may include a plurality of stator cores. For example, the stator core may be constructed by laminating a plurality of steel plates including an annular yoke portion and portions of stator teeth disposed along the circumferential direction and protruding radially inward from the yoke at regular intervals. . Coils forming a rotating magnetic field may be wound around these stator teeth. At this time, the coil may be insulated through the insulator.

A bus bar (BUSBAR) 60 may be provided on the stator 30 . The bus bar 60 is for connecting coils disposed in parallel and is electrically connected to the coils. An annular body made of an insulating material is provided on the bus bar 60, and terminals (61 in FIG. 3) connected to the coil are provided on the body. In addition, the bus bar 60 may supply electricity to the coil through a power terminal ( 200 in FIG. 4 ) connected to the terminal and supplied with external power having different polarities.

The rotor 40 is disposed inside the stator 30. The rotor 40 may be configured by coupling a magnet to the rotor core, or in some cases, the rotor core and the magnet may be integrally configured. In addition, the rotor 40 may be configured in a type in which a magnet is coupled to an outer circumferential surface of the rotor core or a type in which a magnet is inserted into a pocket of the rotor core. On the upper side of the rotor 40, a sensing magnet for obtaining positional information of the rotor 40 may be coupled to a plate and installed, or a similar rotor position sensing means may be installed.

Both ends of the rotating shaft 50 may be rotatably supported by bearings.

Such a motor may be mounted on a vehicle to provide various driving forces required for driving. As an example, the motor may be applied to an Active Roll Stabilizer (ARS). Here, ARS means a device that increases the safety and riding comfort of a vehicle by varying the rigidity of a stabilizer bar. Specifically, it is a device for improving turning safety of a vehicle by adjusting the degree of torsion of the stabilizer bar when turning the vehicle.

At this time, the motor provides a driving force for generating a torsional force of the stabilizer bar.

Two stabilizer bars are connected to the left and right wheels of the vehicle, respectively, and generally, at least one of the two stabilizers is rotatably configured to induce twist. At this time, an actuator including a motor may be disposed between the two stabilizers to transmit rotational force to the stabilizer bar.

2 is a view showing a terminal assembly mounted on the motor of FIG. 1, and FIG. 3 is a view showing a terminal assembly coupled to a terminal of a bus bar.

Referring to FIGS. 2 and 3 , the terminal assembly 10 according to a preferred embodiment of the present invention may be fused and installed with the terminal 61 of the bus bar 60 in a state disposed on the bus bar 60. there is. The terminal 61 raised above the body of the bus bar 60 and the terminal plate 300 are coupled in a contact state.

4 is a view showing the terminal assembly shown in FIG. 2, and FIG. 5 is a view showing a power terminal and a terminal plate.

Referring to FIGS. 4 and 5 , the terminal assembly 10 may include a body 100 , a power terminal 200 , a terminal plate 300 , and a shield terminal 400 .

The body 100 serves as a housing for the terminal assembly 10, and may be implemented in a molded form including the power terminal 200 and the terminal plate 300. The body 100 serves as a frame for combining the power terminal 200, the terminal plate 300, and the shield terminal 400 into one component.

Also, the body 100 may include a first contact inlet 110 and a second contact inlet 120 . The first contact inlet 110 is implemented in an upwardly open form to form a space into which a terminal connected to the power terminal 200 is inserted. The second contact inlet 120 is formed by cutting and serves to expose the terminal plate 300 to the outside.

A first contact inlet 110 is disposed at the center of the body 100, and one second contact inlet 120 may be provided below the first contact inlet 110, and the first contact inlet 110 Symmetrically on both sides based on , two second contact inlets 120 are provided, and all three second contact inlets 120 may be provided. The terminals 61 on U, V, and W of the bus bar 60 may be fused and coupled to the terminal plate 300 exposed to each second contact inlet 120, respectively.

A shield terminal 400 may be disposed in front of the first contact inlet 110 .

All three power terminals 200 may be arranged to correspond to the terminals 61 on U, V, and W. A terminal for supplying external power may be connected to the power terminal 200 .

The terminal plate 300 serves to connect the power terminal 200 and the terminal 61 of the bus bar 60. The terminal plate 300 may be implemented in a flat plate shape, and the power terminal 200 may be coupled vertically.

Referring to FIG. 5 , the terminal plate 300 may be formed by combining three parts such as a seating portion 310, a first plate 320, and a second plate 330.

The seating portion 310 is vertically coupled to the power terminal 200 disposed in the center of the three power terminals 200, and provides a space in which the shield terminal 400 is seated.

The first plate 320 and the second plate 330 may be symmetrically disposed on left and right sides of the seating portion 310 , respectively. The first plate 320 and the second plate 330 may be vertically coupled to the power terminals 200 disposed on both sides of the dog power terminals 200 .

Although the first plate 320 and the second plate 330 are shown in the form of wings. It can be implemented in various shapes and sizes in consideration of the position of the terminal 61 of the bus bar 60.

Based on the height direction, the seating portion 310 may be disposed lower than the first plate 320 and the second plate 330 . Here, the height direction may refer to the axial direction of the motor when the terminal assembly 10 is installed in the motor.

Meanwhile, a hole 340 into which the power terminal 200 is inserted may be formed in the terminal plate 300 .

6 is a view showing a shield terminal coupled to a seating part.

Referring to FIG. 6 , a shield accommodating portion 130 may be provided at the center of the body 100 . The shield accommodating portion 130 provides a space in which the shield terminal 400 is disposed. The shield accommodating portion 130 may be formed in front of the power terminal 200 disposed in the center among the three power terminals 200 .

The shield terminal 400 may include a terminal portion 410 formed in a height direction and a ground portion 420 formed perpendicularly to the terminal portion 410 and protruding forward of the body 100 .

Meanwhile, in order to secure coupling between the shield terminal 400 and the shield accommodating portion 130, the body 100 may include a fixing bar 140. The fixing bar 140 may be formed across both sidewalls of the shield accommodating portion 130 horizontally. The fixing bar 140 serves to prevent the shield terminal 400 from being separated from the shield accommodating part 130 in the axial direction.

7 is a diagram illustrating a shield terminal.

Referring to FIG. 7 , the ground portion 420 of the shield terminal 400 may include a bottom portion 421 and a ground connection portion 422 . The bottom portion 421 may be formed to protrude forward by being bent vertically from the terminal portion 410 . Also, the ground connection portion 422 may be bent upward from the bottom portion 420 . At this time, the ground connection portion 422 may be formed to face the terminal portion 410 at a predetermined interval.

The spaced space between the ground connection unit 422 and the terminal unit 410 may be used as a space into which the fixing bar 140 is fitted. The size of the spaced apart space between the terminal parts 410 of the ground connection part 422 is appropriate in consideration of the space for coupling with the elastic conductor (500 in FIG. 8) and the ground connection part 422 in addition to the width of the fixing bar 140. can be set.

The ground connection portion 422 is connected to an elastic conductor (500 in FIG. 8 ) and serves to electrically connect the shield terminal 400 and the housing 20 .

Meanwhile, a locking protrusion 423 may be formed at the ground connection portion 422 .

The protrusions 423 protrude from both sides of the ground connection part 422 so that the elastic conductor (500 in FIG. 8 ) coupled to the ground connection part 422 does not escape from the ground connection part 422 in the axial direction. serves to prevent

8 is a view showing an elastic conductor.

Referring to FIG. 8 , a ground groove 21 is concavely formed at an upper end of the housing 20, and an elastic conductor 500 may be mounted in the ground groove 21. The elastic conductor 500 may be implemented in the form of a compression coil spring and may be made of a conductive material. In addition, one end of the elastic conductor 500 is connected to the ground connection part 422 and the other end is supported on the inner wall of the ground groove 21 while being inserted into the ground groove 21 .

The elastic conductor 800 electrically connects the housing 20 and the shield terminal 400 by contacting the housing 20 while being inserted into the ground groove 21 . In addition, since elastic force is applied in the radial direction of the motor, there is an advantage in increasing the connectivity between the shield terminal 400 and the housing 20 .

Above, with reference to the accompanying drawings with respect to the terminal assembly and the motor including the terminal assembly according to one preferred embodiment of the present invention has been looked at in detail.

The above description is merely an example of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: body
110: first contact inlet
120; 2nd contact inlet
130: shield receiving unit
140: fixed bar
200: power terminal
300: terminal plate
310: seating part
320: first plate
330: second plate
400: shield terminal
410: terminal unit
420: ground
421: bottom
422: ground connection
500: elastic conductor

Claims (15)

A body including a first contact inlet and a second contact inlet;
a power terminal inserted into the first contact inlet;
A terminal plate exposed to the second contact inlet, connected to the power terminal, and including a seating portion; And
It is seated on the seating portion, and includes a terminal portion and a ground portion formed by being bent at the terminal portion and having a protrusion protruding from the terminal portion;
A shield accommodating portion accommodating a shield terminal in the center of the body,
The grounding part includes a bottom part bent at the terminal part and a ground connection part formed by bending the bottom part to face the terminal part and having the locking protrusion formed therein,
The shield receiving part
A terminal assembly comprising a fixing bar formed across both side walls of the shield accommodating portion and positioned between the terminal portion and the ground connection portion. According to claim 1,
A terminal assembly in which the power terminal and the terminal plate are vertically coupled. According to claim 2,
The terminal assembly wherein the terminal plate is disposed symmetrically about the power terminal. According to claim 3,
The terminal assembly wherein the seating portion is provided at the center of the terminal plate. According to claim 3,
The terminal assembly in which the terminal plate is formed with a hole into which the power terminal is inserted. According to claim 3,
The terminal plate
A terminal assembly comprising a first plate disposed on the left side and a second plate disposed on the right side with respect to the seating portion, wherein the seating portion is disposed lower than the first plate and the second plate in a height direction. delete delete delete housing;
a stator disposed inside the housing;
a rotor disposed inside the stator;
a rotating shaft coupled to the rotor;
A bus bar disposed above the stator; And
A body including a first contact inlet and a second contact inlet, a power terminal inserted into the first contact inlet, and a terminal plate exposed to the second contact inlet and connected to the power terminal and including a seating portion; a terminal assembly including a shield terminal seated on a seating portion and an elastic conductor connecting the shield terminal and the housing;
A motor comprising a. According to claim 10,
The shield terminal,
A motor seated on the seating portion and including a terminal portion and a ground portion formed by being bent at the terminal portion and having a protrusion protruding from the terminal portion. According to claim 11,
The ground portion includes a bottom portion formed by bending the terminal portion and a ground connection portion formed by bending the bottom portion to face the terminal portion and having the locking protrusion formed therein. According to claim 12,
The elastic conductor is coupled to the ground connection portion so as to be caught on the protrusion. According to claim 13,
A motor in which a ground groove is concavely formed on an upper surface of the housing, and the elastic conductor is inserted into the ground groove. According to claim 14,
The elastic conductor is connected to the ground connection portion and the ground groove so that a restoring force acts in a radial direction about the rotation axis.

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