KR20160057694A - Bobbin having the same - Google Patents

Abstract

The present invention provides a bobbin which includes a cylindrical body including a wiring surface; and a lateral plate formed at both sides of the body. The lateral plate is concaved on the inner side of the lateral plate to be inclined based on a radiation direction. An interference removing groove is arranged from the edge of the lateral plate to the wiring surface. A wiring process for removing a gap between a coil and the lateral plate of the bobbin is induced in a first wiring line. Thereby, an arrangement wiring can be formed on the bobbin.

Description

[0001] DESCRIPTION [0002] BOBBIN HAVING THE SAME [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin and a motor including the bobbin, and more particularly, to a bobbin to which a coil is wound and a motor including the bobbin.

A step motor (stepping motor) may be a digital actuator that rotates or linearly moves at a certain angle. In general, a case where a rotational motion is performed is referred to as a step motor, and a case where a linear motion is performed is referred to as a linear step motor. Linear step motors are used in various applications such as automobiles, machine tools, industrial robots, etc., because the number of input pulses is proportional to the rotation angle of the motor.

The performance of such a stepper motor torque is proportional to the thickness of the coil wound on the bobbin and to the winding. The thickness of the coil and the winding are subject to design limitations due to the space and resistance value inside the motor. In addition, when designing the thickness of the coil and the winding, a void space in the winding space is ensured, which is to insure insulation performance. At this time, it is preferable to minimize the empty space reserved for insulation performance. In order to increase the performance of the motor by ensuring the maximum thickness of the coil and the winding in the same space.

It is very important to wind the coils on the bobbin in order to minimize the void space. If the coil does not have an alignment winding on the bobbin, the number of winding layers becomes larger than the originally designed value because the winding shape is distorted. As a result, there is a problem that a space for ensuring insulation performance is reduced, and a coil and a metal housing are brought into contact with each other to cause a short circuit. Performing additional insulation treatment to prevent such problems causes additional problems that increase manufacturing costs and manufacturing costs.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a bobbin and a motor including the bobbin.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

In order to accomplish the above object, the present invention provides a cylindrical body including a winding surface,

And a side plate disposed on both sides of the body, wherein the side plate is concavely formed on an inner surface of the side plate so as to be inclined with respect to a radial direction, and includes an interference eliminating groove disposed from an edge of the side plate to the winding surface, Can be provided.

Preferably, the interference cancellation groove may include a first groove starting at an edge of the side plate and a second groove starting from the first groove to the winding surface.

Preferably, the width of the first groove is larger than the width of the second groove.

Preferably, the width of the first groove may be increased toward the edge of the side plate.

Preferably, any one of the two side plates of the first groove may be continuous with any one of the side walls of the ash groove.

Preferably, the other of the two side plates of the first groove may be formed by bending the other side wall of the second groove.

Preferably, the second groove and the outer surface of the side plate may be penetrated.

Preferably, the winding surface may include a coil receiving groove formed to be concave and disposed along the circumferential direction.

Preferably, the winding surface may include at least one crossing area formed to be flat at regular intervals along the circumferential direction.

Preferably, the interference cancellation groove may be connected to the crossing region.

According to another aspect of the present invention, there is provided a stator including a stator including a bobbin wound around a coil, a rotor disposed inside the stator, and a rotating shaft coupled to the rotor, wherein the bobbin includes a cylindrical body And a side plate formed on both side surfaces of the body, wherein the side plate is concave on the inner surface of the side plate so as to be inclined with respect to the radial direction, and includes an interference removing groove disposed from the edge of the side plate to the winding surface The motor can be provided.

According to an embodiment of the present invention, there is provided an interference elimination groove in which a coil is received in an inner side surface of a side plate of a bobbin, thereby inducing a winding operation so that there is no gap between the coil and the side plate of the bobbin in the first winding layer, In order to achieve the desired effect.

Further, according to an embodiment of the present invention, an interference elimination groove is formed to be connected to a crossing region where no coil seating groove is formed, thereby providing an advantageous effect that the alignment winding can be smoothly performed.

Further, according to an embodiment of the present invention, the interference cancellation groove is formed of the first groove and the two grooves, and the second groove is formed to penetrate the outer side surface of the side plate, so that the interference cancellation groove can be more easily realized Effect.

1 is a view showing a step motor,
FIG. 2 is a front view showing a bobbin according to a preferred embodiment of the present invention, FIG.
Fig. 3 is a perspective view of the bobbin shown in Fig. 2,
4 is a view showing a coil receiving groove,
5 is a view showing a process of winding a coil on a bobbin,
6 is a view showing an interference cancellation groove,
7 is a view showing a coil inserted in the interference elimination groove.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms and the inventor should properly define the concept of the term in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

1 is a view showing a step motor.

1, the step motor includes a housing 10, a stator section 20 disposed in the housing 10, a rotor section 30 rotatably arranged with the stator section 20, 30), and a rotary shaft (40: lead screw) that linearly moves. The housing (00) is provided with a space for accommodating the stator part (20) and the rotor part (30). The shape of the housing 100 can be variously modified depending on the structure of the step motor. The stator section 20 may include a pair of tooth yokes 21 and a bobbin 100 that is seated on the outside of the tooth yoke 21 in parallel. The rotary shaft (40) can be linearly moved (moved back and forth) by the rotation of the rotor part (30).

When a power source having a positive or negative current direction is applied to the coil 11 wound around the bobbin 100, the step motor alternately magnetizes the N pole or the S pole at both ends of the bobbin 100 by the Fleming's right-hand rule . The magnetic force generated alternately generates a pulling force or a pushing force to generate a rotational force in the rotor portion 30. [

FIG. 2 is a front view showing a bobbin according to a preferred embodiment of the present invention, and FIG. 3 is a perspective view of the bobbin shown in FIG.

2 and 3, the bobbin 100 may include a cylindrical body 110 including a winding surface, and a side plate 120 coupled to both sides of the body 110, respectively.

The body 110 may be formed in a cylindrical shape having an outer circumferential surface and an inner circumferential surface with a hollow center and an outer circumferential surface may be used as a winding surface around which the coil 110 is wound. And the coil 11 is wound on the winding name of the rotating body 110.

4 is a view showing a coil seating groove.

Referring to FIG. 4, a coil receiving groove 111 for holding a winding position of a coil 11 to be wound can be formed on an outer circumferential surface of the body 110. The coil receiving groove 111 may be formed along the outer circumferential surface of the coil 11. And may be formed in a round shape on the outer circumferential surface of the body 110 so as to be in close contact with the coil 11.

The coil receiving groove 111 is for aligning the position of the lowermost winding layer contacting the outer circumferential surface of the body 110, and positions the winding of the coil so that no gap is formed between the coil and the coil.

On the other hand, the outer circumferential surface of the body 110 may be formed with a crossing region 112 in which the coil receiving grooves 111 are not formed at regular intervals with reference to the circumferential direction and are formed flat. The cross area 112 is a space for securing the margin of the winding position, and the position of the coil 11 winding in this space can be changed under the winding condition.

The side plates 120 are formed in the shape of a ring-shaped disk having an empty central portion and are coupled to both sides of the body 110, respectively. Since the outer circumferential surface of the side plate 120 is disposed on the outer side of the outer circumferential surface of the body 110 with respect to the radial direction, the coil winding space having the side plate 120 as the side wall is formed .

The coils supplied from the separate feeding device are wound around the bobbin 100 while the bobbin 100 is rotated.

5 is a view showing a process of winding a coil on a bobbin.

Referring to FIG. 5, the coil 11 of the first winding layer L1 positioned at the lowest layer may be wound to face the side plate 120 located on the right side of the side plate 120 located on the left side with reference to the drawing. And the winding winding in the first winding layer L1 plays a very important role in the alignment winding of the entire coil 11. [ The second winding layer L2 and the third rewinding layer L3 are laminated and wound on the basis of the first winding layer L1.

At this time, in the first winding layer L1, the coil 11 is wound in the order of A, B and C in FIG. 1, as shown in A of FIG. The first winding position of the coil 11 is very important. There is no gap between the coil 11 and the side plate 120 at the first winding position A in the area indicated by 1 in Fig. 1, there is no empty space between the coils 11 in the first winding layer L1, Can be achieved.

The interference cancellation groove 130 is provided in the side plate 120 in order to minimize the gap between the coil 11 and the side plate 120 in the first winding position A in the present invention.

6 is a view showing an interference cancellation groove, and Fig. 7 is a view showing a coil inserted into the interference cancellation groove. 6 and 7 clearly show only the main feature parts in order to clearly understand the present invention, and as a result various variations of the illustration are expected, and the scope of the present invention is limited by the specific shape shown in the figures There is no need.

6 and 7, the interference elimination groove 130 guides the coil 11 to the inside of the side wall 120 to align the position of the coil 11 to be wound first on the winding surface of the body 110 , And the subsequent winding serves to prevent the interference with the winding path of the coil 11. The interference cancellation groove 130 may be recessed from the inner side surface of the side plate 120 toward the outer side surface and be inclined with respect to the radial direction.

Concretely, with respect to a virtual reference line L connecting a point C of the bobbin and a point P of the edge of the side plate 120, the lengthwise direction of the interference elimination groove 130 is set at a predetermined angle R, The interference cancellation groove 130 may be formed to be inclined. At this time, the interference removing groove 130 may be formed to be inclined toward the winding direction. For example, with reference to FIG. 6, the winding direction is clockwise, and the interference elimination groove 130 may be formed to be inclined toward the right.

The interference cancellation groove 130 may include a first groove 131 and a second groove 132 connected to each other.

The first groove 131 starts at the edge of the side plate 120 and the second groove 132 is connected to the first groove 131 to form a winding surface or an outer peripheral surface of the body 110 .

The first groove 131 serves as an inlet for guiding the coil 11 supplied from the feeding device to be inserted into the bobbin 100 for the first time. The width of the first groove 131 may be greater than the width of the second groove 132. Specifically, the width of the first groove 131 may be increased toward the edge of the side plate 120. For example, the first groove 131 may be formed with an inner wall 131a relatively close to the center C of the bobbin and a outer wall 131b relatively farther from the center C of the bobbin. And the distance between the inner wall 131a and the outer wall 131b may be set to be further away toward the edge of the side plate 120. [ This is to induce the coil 11 to be easily inserted into the interference elimination groove 130.

The second groove 132 may be formed to extend from the first groove 131 to the winding surface of the body 110. The second groove 132 may be formed with an inner wall 132a relatively close to the center C of the bobbin and a outer wall 132b relatively farther from the center C of the bobbin. The inner wall 132a of the second groove 132 may be continuous with the inner wall 131a of the first groove 131. The outer wall 131b of the first groove 131 may be formed by bending the outer wall 132b of the second groove 132.

Meanwhile, the second groove 132 may be formed so that the outer surface of the side plate 120 is penetrated. This is a structure in which the injection pin is inserted at the outer surface of the side plate 120 to form the second groove 132.

This will be described in detail as follows.

The first groove 131 and the second groove 132 may be formed through two injection fins, respectively. The first groove 131 slants along the inner surface of the side plate 120 to be molded And the second groove 132 may be inserted from the outer surface of the side plate 120 and slid to penetrate to the inner side surface of the side plate 120. [ Since the first groove 131 and the second groove 132 having different widths are formed by sliding the respective injection pins, the mass productivity of the product can be increased.

7, the coil 11 inserted into the interference elimination groove 130 is accommodated in the inside of the side plate 120 and passes through the crossing region 112 to reach the side plate 120 of the coil seating groove 111 Can be guided to the adjacent outermost coil receiving grooves 111a. The intersection area 112 can be connected to the end of the interference elimination groove 130 to induce the coil 11 to be easily guided to the outermost coil receiving groove 111a.

Since the coil 11 is received inside the side plate 120 and guided to the outermost coil receiving groove 111a, it is possible to prevent the gap between the coil 11 and the side plate 120 at the first winding position from being generated have. In addition, the interference of the winding path of the coil guided to the coil receiving groove immediately adjacent to the outermost coil receiving groove 111a in the region shown in Fig. 7B is minimized to induce winding alignment in the lowermost winding layer There is an advantage.

The bobbin according to one preferred embodiment of the present invention and the motor including the bobbin have been specifically described with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Housing
11: Coil
20:
30:
40:
100: Bobbin
110: Body
111: Coil seating groove
112: intersection area
120: shroud
130: interference cancellation groove
131: 1st home
132: 2nd home
131a, 132a: inner wall
131b, 132b: outer wall

Claims (11)

A cylindrical body including a winding surface; and
And side plates formed on both sides of the body,
Wherein the side plate is concave on the inner surface of the side plate so as to be inclined with respect to the radial direction, and is disposed from the edge of the side plate to the winding surface. The method according to claim 1,
Wherein the interference cancellation groove includes a first groove starting at an edge of the side plate and a second groove starting from the first groove to the winding surface. 3. The method of claim 2,
Wherein a width of the first groove is larger than a width of the second groove. The method of claim 3,
Wherein the width of the first groove increases as the edge of the side plate increases. 5. The method of claim 4,
Wherein one of the two side plates of the first groove is formed to be continuous with one of both side walls of the ash groove. 6. The method of claim 5,
And the other of the two side plates of the first groove is formed by bending the other of the side walls of the ash groove. 3. The method of claim 2,
And the second groove and the outer side surface of the side plate are penetrated. The method according to claim 1,
Wherein the winding surface comprises a coil receiving groove formed concavely and disposed along the circumferential direction. 9. The method of claim 8,
Wherein the winding surface includes at least one crossing area formed to be flat at regular intervals along the circumferential direction. 10. The method of claim 9,
And the interference cancellation groove is connected to the intersection region. A stator including a bobbin to which a coil is wound;
A rotor disposed inside the stator;
And a rotating shaft coupled to the rotor,
The bobbin
And a side plate formed on both side surfaces of the body, wherein the side plate is concavely formed on an inner surface of the side plate so as to be inclined with respect to a radial direction so as to extend from an edge of the side plate to the winding surface And an interference canceling groove disposed therein.

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