KR20180093315A - Motor and assembly method thereof - Google Patents

Abstract

Introduced are a motor capable of stably maintaining electrical connection between a circuit board and a stator and a method of assembling the same. The motor may include: a housing having a circuit board; a stator mounted in the housing so as to be spaced apart from the circuit board and having a support bar for supporting the circuit board; and a rotor provided on the inner diameter side of the stator to be rotated through electromagnetic interaction with the stator.

Description

MOTOR AND ASSEMBLY METHOD THEREOF BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a motor and a motor, and more particularly, to a motor and a motor assembly method capable of stably supporting a circuit board in a housing to smoothly maintain electrical connection between the circuit board and the stator.

Generally, a motor is a device that obtains rotational force by converting electrical energy into mechanical energy. It is widely used not only for home electronic products but also for industrial devices.

The motor includes a stator accommodated in the motor housing, a coil wound around the stator, a rotor disposed inside or outside the stator and rotated by electromagnetic interaction with the stator, and a circuit board provided on one side of the stator. (PCB substrate). A circuit pattern is printed on the circuit board, various circuit elements such as a PWM driver IC, a resistor and a capacitor are mounted, and an electric signal is applied to the coil of the stator to control the operation of the rotor.

However, in the case of the conventional motor, when the stator is mounted on the motor housing, the stator's assembling position must be precisely adjusted. However, due to the assembly tolerance or the shaking generated during assembly, the assembling position of the stator between the same products may become uneven , Which may reduce the reliability of the product.

Particularly, a stable connection between a coil wound around a stator and a circuit board must be stably performed. Accordingly, there is a demand for a method of stably supporting a circuit board in a motor housing through a stator.

Patent Registration No. 10-1215971 (December 20, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a motor and a motor assembly method capable of stably supporting a circuit board in a housing.

According to an aspect of the present invention, there is provided a motor including: a housing having a circuit board; A stator mounted in the housing to be spaced apart from the circuit board and having a support bar for supporting the circuit board; And a rotor provided on an inner diameter side of the stator to be rotated through electromagnetic interaction with the stator.

At this time, a plurality of fixed keys spaced apart along a rear side edge of the stator are formed to protrude in the outer diameter direction, and a plurality of fixing grooves corresponding to the fixed keys may be formed in the housing to insert the plurality of fixed keys have.

Further, the housing may include a substrate housing having a circuit board and a plurality of first assembly grooves spaced apart along a rear edge of the substrate housing; A motor housing having the stator and the rotor, and having a plurality of second assembly grooves spaced apart along a front side edge thereof; And an assembly pin that can be inserted into both the first assembly groove and the second assembly groove at both ends to select an initial assembly position between the substrate housing and the motor housing at the time of assembly between the substrate housing and the motor housing have.

The motor housing may include a first housing fixedly mounted on an inner circumferential surface of the stator, and having a plurality of first alignment grooves spaced apart along a front side edge thereof; A second housing coupled to the first housing such that a plurality of second alignment grooves are spaced apart along a rear edge of the second housing; And an alignment pin inserted at both ends into the first alignment groove and the second alignment groove to select an initial assembly position between the first housing and the second housing at the time of assembly between the first housing and the second housing, .

Further, the support bar may include a support portion fixed to the stator; An inclined portion formed to be inclined at an end of the support portion so as to face the edge portion of the circuit board; And a latching groove portion in which an edge portion of the circuit board that has entered through the inclined portion is selectively hooked and fixed.

According to an aspect of the present invention, there is provided a method of assembling a motor, comprising: preparing a housing having a circuit board and a stator having a support bar; Assembling a stator to the housing to support the circuit board through the support bar of the stator; And fixing the stator in the housing through the fastening member.

At this time, the preparing step may include preparing a stator having a plurality of fixed keys spaced apart along a rear edge thereof and projecting in an outer diameter direction, and a rotor having a plurality of fixing grooves corresponding to the fixed keys, , The stator and the housing may be coupled such that the fixed key of the stator is inserted into the fixing groove of the housing.

In addition, the preparing step may include: a substrate housing having a plurality of first assembly grooves spaced apart along a rear side edge thereof; a motor housing having a plurality of second assembly grooves spaced apart along a front side edge thereof; The assembling step of assembling the assembling pin for selecting the initial assembling position between the motor housings includes inserting both ends of the assembling pin into the first assembling recess of the substrate housing and the second assembling recess of the motor housing, The initial assembly position between the substrate housing and the motor housing can be selected.

In the embodiment of the present invention, when the motor is assembled, the motor can be precisely mounted to the fixing groove of the housing through the fixing key of the stator, so that the position and fixing between the stator and the housing can be easily performed. And the structure can be simplified.

In addition, the embodiment of the present invention can stably support the stator and the circuit board through the support bar so that a gap is formed between the stator and the circuit board (PCB substrate), thereby preventing heat transfer between the motor and the circuit board , The heat insulating effect can be realized with respect to the external heat flowing through the housing.

Particularly, the embodiment of the present invention can reduce unnecessary parts and space through the mounting structure between the fixed key of the stator and the fixing groove of the housing, and the supporting structure that supports between the stator and the circuit board through the supporting bar, And the weight can be reduced, and there is an advantage that the durability of the product can be improved by reducing the heat transfer to the circuit board.

1 is an assembled perspective view illustrating a motor according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a motor according to an embodiment of the present invention.
3 is a side view illustrating a support structure between a circuit board and a stator of a motor according to an embodiment of the present invention.
4 is a perspective view illustrating a stator of a motor according to an embodiment of the present invention.
5 is an exploded perspective view showing a motor housing of a motor according to an embodiment of the present invention.
6 is a perspective view showing a stator of a motor according to a modification of the present invention.
7 is a block diagram illustrating a method of assembling a motor according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION The following description is one of many aspects of the claimed invention and the following description may form part of the detailed description of the invention. However, the detailed description of known configurations or functions in describing the present invention may be omitted for clarity.

While the invention is susceptible to various modifications and its various embodiments, it is intended to illustrate the specific embodiments and the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

And terms including ordinals such as first, second, etc. may be used to describe various elements, but the constituent elements are not limited by such terms. These terms are used only to distinguish one component from another. It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view illustrating a motor according to an embodiment of the present invention. FIG. 2 is an exploded perspective view illustrating a motor according to an embodiment of the present invention. FIG. 4 is a perspective view illustrating a stator of a motor according to an embodiment of the present invention. FIG. 5 is a perspective view of a motor housing of a motor according to an embodiment of the present invention. Fig.

1 to 5, a motor 10 according to an embodiment of the present invention includes a housing 100 and a support bar 210 for supporting a circuit board 102 in the housing 100 The stator 200 and the stator 200. The stator 200 and the stator 200 can be rotated together through electromagnetic interaction.

Specifically, the circuit board 102, the stator 200, and the rotor 300 may be embedded in the housing 100. For example, the circuit board 102 may be mounted on the rear side of the housing 100, and the stator 200 and the rotor 300 may be mounted on the front side of the housing 100. Here, the rear side and the front shaft of the housing 100 can refer to both ends of the shaft with respect to the axial direction. For example, the left upper end of the drawing may be defined as the rear side of the housing 100, and the lower right end of the drawing may be defined as the front side of the housing 100 with reference to the states shown in Figs.

The circuit board 102 mounted on the housing 100 may be electrically connected to a coil wound on the stator 200. The circuit board 102 can control the operation of the rotor 300 by applying an electric signal to the coil. Various circuit elements and circuit patterns can be formed on one surface of the circuit board 102 and the other surface of the circuit board 102 can be supported by the support bars 210 of the stator 200. [

The housing 100 includes a substrate housing 110 having a circuit board 102 and a motor housing 120 having a stator 200 and a rotor 300. The housing 100 includes a substrate housing 110 and a motor housing 120 And a fastening member 103 inserted into the fastening hole 104 of the motor housing 120 through the substrate housing 110. [

For example, the substrate housing 110 may provide a space for mounting the circuit board 102 therein, and a plurality of first assembly grooves (not shown) may be formed at the front edge of the substrate housing 110 . The motor housing 120 may provide a seating space 122 in which the stator 200 and the rotor 300 are seated and may include a front edge of the motor housing 120, And a plurality of second assembly grooves 121 may be spaced apart from the front side edge.

The assembly pin 130 is inserted between the substrate housing 110 and the motor housing 120 by inserting both ends into the first and second assembly grooves 121 when assembling between the substrate housing 110 and the motor housing 120. [ The initial assembly position can be selected. Of course, when one end of the assembly pin 130 is fixed to the first assembly groove 121 or the second assembly groove 121 at the time of assembling between the substrate housing 110 and the motor housing 120, The assembly pin 130 is inserted into the first assembly groove 121 or the second assembly groove 121 or the other end of the assembly pin 130 is fixed to the first assembly groove 121 or the second assembly groove 121, One end of the second assembly groove 121 may be inserted into the first assembly groove 121 or the second assembly groove 121.

In particular, the motor housing 120 includes a first housing 150 fixedly mounted on an inner peripheral surface of the stator 200, a second housing 160 coupled to the first housing 150 to communicate with the first housing 150 And an alignment pin 170 for selecting an initial assembly position between the first housing 160 and the second housing 160.

At this time, a plurality of first alignment grooves (not shown) may be formed on the front side edge of the first housing 150, and a plurality of second alignment grooves 161 may be formed on the rear side edge of the second housing 160. [ Both ends of the alignment pin 170 are inserted into the first alignment groove 161 and the second alignment groove 161 when assembling between the first housing 150 and the second housing 160. Therefore, The initial assembly position between the first housing 150 and the second housing 160 can be selected.

The stator 200 may be mounted in the housing 100 such that a space is formed between the circuit boards 102 and the stator 200 is formed in the shape of a hollow shell. And a support bar 210 for supporting the base 102. For example, the stator 200 stably supports the circuit board 102 to form a space between the circuit boards 102 via the support bar 210, thereby preventing heat transfer in the space between the motor and the circuit board 102 And the heat insulating effect can be realized with respect to the external heat flowing through the housing.

At this time, the support bars 210 may be provided in a plurality of positions spaced along the rear edge of the stator 200. The end portions of the plurality of support bars 210 can stably support the circuit board 102 in the housing 100 by supporting the other surface of the circuit board 102 opposed to the stator 200. As a result, 102 and the stator 200 can be smoothly maintained.

The stator 200 may include teeth on which coils (not shown) are wound. The teeth may protrude in the radial direction toward the inside of the stator 200 and may be provided in a plurality of spaced apart from each other along the circumferential direction of the stator 200. The coil may be electrically connected to the circuit board 102 to receive a voltage from the circuit board 102. When a voltage is applied from the circuit board 102, the coil can generate an electromagnetic field that interacts with the permanent magnets of the rotor 300.

The stator 200 may be provided with a fixed key 201 protruding in the outer diameter direction of the stator 200 for fixing the stator 200 to the housing 100 and more specifically to the motor housing 120. The fixed keys 201 may be provided in a plurality of positions spaced along the rear side edge of the stator 200. These fixed keys 201 may be inserted into a plurality of fixing grooves 101 formed in the housing 100 Can be fixed.

The supporting bar 210 and the fixed key 201 are formed of three pieces spaced apart along the rear edge of the stator 200 but are not limited thereto and the supporting bar 210 and the fixed key 201 201 may be variously changed for stable support / fixation with the circuit board 102 or the housing 100.

At the center of the stator 200, an empty space for accommodating the rotor 300 may be formed. The rotor 300 may be provided inside the stator 200 to rotate through electromagnetic interaction with the stator 200.

The rotor 300 may comprise a permanent magnet and is configured to rotate and interact electromagnetically with a coil wound on the stator 200 through a permanent magnet. A shaft is inserted and fixed to the center of the rotor 300, and the shaft can rotate together with the rotor 300. If necessary, the shaft can be supported by the motor housing 120 through a bearing or the like.

6 is a perspective view showing a stator of a motor according to a modification of the present invention.

As shown in FIG. 6, according to a modification of the present invention, the support bar 210 'of the stator 200' can support the edge of the circuit board.

The support bar 210 'includes a support portion 211 fixed to the stator 200' and an inclined portion 212 formed at an end of the support portion 211 so as to face the edge portion of the circuit board 102 And a latching groove 213 in which an edge of the circuit board 102 is selectively engaged and fixed.

Therefore, when the end of the support bar 210 'is moved to the edge of the circuit board 102, the edge of the circuit board 102 moves in all directions along the inclined portion 212 of the support bar 210' And the hooking groove 213 of the support bar 210 '. The edge portions of the circuit board 102 can be selectively fixed to the appropriate positions of the latching groove portions 213 in consideration of the distance from the stator 200 'because the latching groove portions 213 can be provided in a plurality of .

7 is a block diagram illustrating a method of assembling a motor according to an embodiment of the present invention.

7, a method of assembling a motor according to an embodiment of the present invention includes a step S100 of preparing a stator having a housing and a support bar provided with a circuit board, (S200) assembling a stator to the housing to support the stator (S300), and fixing the stator in the housing through the fastening member (S300).

The preparing step S100 prepares parts for assembling the motor, for example, a housing, a stator, and a rotor. At this time, the housing may be a motor housing composed of a first housing and a second housing, for mounting the stator and the rotor, and a substrate housing for mounting the circuit board. The stator may be provided with a support bar and a plurality of fixed keys along the rear edge.

When the components for assembling the motor are prepared, they are assembled in a step S200 of assembling the housing, the stator, and the rotor, which will be described later, before fixing the housing, the stator and the rotors to each other.

In the assembling step S200, the stator is assembled to the housing so that the circuit board is supported through the supporting bar of the stator.

In order to assemble the stator to the housing, both ends of the alignment pin are inserted into the first alignment groove of the first housing and the second alignment groove of the second housing, respectively, so that the first housing and the second housing are communicated with each other, . Then, both end portions of the assembly pin are inserted into the first assembly groove of the substrate housing and the second assembly groove of the motor housing, respectively, to select an initial assembly position between the substrate housing and the motor housing.

When the assembling of the stator in the housing is completed, the stator in the housing is fixed in the fixing step S300 described later.

The fixing step S300 fixes the stator in the housing through the fastening member. For example, to fix the stator in the housing, the substrate housing and the motor housing are fastened to each other using a fastening member.

At this time, since the support bar of the stator is in close contact with the other surface of the circuit board, the circuit board in the housing can be stably supported, and the stator can be accurately mounted in the fixing groove of the housing through the fixing key, The position of the stator can be prevented from being changed in advance by means of, for example,

As described above, according to the present invention, when the motor is assembled, the motor can be precisely mounted to the fixing groove of the housing through the fixing key of the stator, so that the position and fixing between the stator and the housing can be easily performed. By reducing the number of components and simplifying the structure and stably supporting the stator and the circuit board through the support bar so that a gap is formed between the stator and the circuit board, It is possible to realize a heat insulating effect with respect to the external heat flowing through the housing and in particular to provide a mounting structure between the fixing key of the stator and the fixing grooves of the housing and a supporting structure for supporting between the stator and the circuit board via the supporting bar , Unnecessary parts and space can be reduced, the size and weight of the product can be reduced, and heat transfer And the durability of the product can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

100: housing 101: fixing groove
102: circuit board 110: substrate housing
120: motor housing 121: second assembly groove
130: assembly pin 150: first housing
160: second housing 161: second alignment groove
170: alignment pin 200: stator
201: fixed key 210: support bar
300: rotor

Claims (8)

A housing having a circuit board;
A stator mounted in the housing to be spaced apart from the circuit board and having a support bar for supporting the circuit board; And
And a rotor provided on an inner diameter side of the stator so as to be rotated through electromagnetic interaction with the stator. The method according to claim 1,
The stator
A plurality of fixed keys spaced apart along the rear side edge are protruded in the outer diameter direction,
The housing
And a plurality of fixed grooves corresponding to the fixed keys are formed so that the plurality of fixed keys are inserted. The method according to claim 1,
The housing
A substrate housing having a circuit board and a plurality of first assembly grooves spaced apart along a rear edge;
A motor housing having the stator and the rotor, and having a plurality of second assembly grooves spaced apart along a front side edge thereof; And
And an assembly pin that is insertable into both the first assembly groove and the second assembly groove at both ends to select an initial assembly position between the substrate housing and the motor housing when assembling between the substrate housing and the motor housing. The method of claim 3,
The motor housing
A first housing fixedly mounted on an inner peripheral surface of the stator and having a plurality of first alignment grooves spaced apart along a front side edge thereof; And
A second housing coupled to the first housing such that a plurality of second alignment grooves are spaced apart along a rear edge of the second housing; And
And an alignment pin inserted at both ends into the first alignment groove and the second alignment groove to select an initial assembly position between the first housing and the second housing at the time of assembling between the first housing and the second housing The motor. The method according to claim 1,
The support bar
A support fixedly installed on the stator;
An inclined portion formed to be inclined at an end of the support portion so as to face the edge portion of the circuit board; And
And an engaging groove portion for selectively engaging and fixing an edge portion of the circuit board that has entered through the inclined portion. 1. A method of manufacturing a stator, comprising: preparing a housing having a circuit board and a stator provided with a support bar;
Assembling a stator to the housing to support the circuit board through the support bar of the stator; And
And securing the stator in the housing via the fastening member. The method according to claim 6,
Wherein the preparing comprises:
A stator having a plurality of fixed keys spaced apart along a rear edge thereof and projecting in an outer diameter direction, and a housing having a plurality of fixing grooves corresponding to the fixed keys,
Wherein the step of assembling comprises:
And the stator and the housing are coupled with each other so that the fixed key of the stator is inserted into the fixing groove of the housing. The method according to claim 6,
Wherein the preparing comprises:
A motor housing having a plurality of first mounting grooves spaced apart along a rear side edge thereof, a plurality of second mounting grooves spaced apart along a front side edge of the motor housing, and an initial assembly position between the substrate housing and the motor housing Preparing an assembly pin for selection,
Wherein the step of assembling comprises:
And inserting both ends of the assembly pin into a first assembly groove of the substrate housing and a second assembly groove of the motor housing to select an initial assembly position between the substrate housing and the motor housing.

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