JP2585673Y2 - Coil with bobbin - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a coil with bobbin using <br/> the coil can be drawn lead portion of the inner peripheral portion in parallel with the lead portion of the outer peripheral portion.

[0002]

2. Description of the Related Art In a coil used for a motor, usually,
Generally, a round winding is used. In recent years, for the purpose of improving the space factor, a coil with a square wire, a sheet-shaped coil,
Laminated coils have been put to practical use. The laminated coil has a structure in which a tape-shaped conductive thin film such as a copper foil with an insulating layer is wound and an air core is formed at the center, and the tape-shaped conductive thin film does not bend in the width direction. The lead means of the lead portion is the point. For example, a method of bending the conductive thin film on the inner peripheral portion obliquely and extracting the lead portion on the inner peripheral portion to the outside can be considered.

[0003]

However, the above-described lead-out means for the inner peripheral portion has a problem that the conductive thin film on the inner peripheral portion is damaged by bending. Further, since the lead-out direction of the inner peripheral portion is perpendicular to the lead portion of the outer peripheral portion, there is a problem that the electrode terminals of the inner peripheral portion lead portion protrude.

The present invention has been made in view of the above-mentioned problems, and its purpose is to prevent the conductive thin film on the inner peripheral portion from being damaged by bending, which has been a problem in the past, and to prevent the inner peripheral portion from being damaged. and to provide a coil with bobbin with coil capable of suppressing the protrusion to the side of the electrode terminal of the lead portion.

[0005]

Means for Solving the Problems] To achieve the above object
According to the first aspect of the present invention, in a coil body in which a conductive thin film is wound and an air core portion is formed at the center, the conductive thin film in the inner peripheral portion is spirally shifted in a direction perpendicular to the winding direction, A coil that pulls out the lead part of the outer part and the lead part of the outer part in parallel ,
A bobbin for mounting the coil,
A gap in the direction perpendicular to the winding direction of the coil body
An outlet is formed between the outlets, and the outlet is
The inner lead and outer lead of the coil body
It is obtained by the structure to draw away One or parallel.

According to the second aspect of the present invention, in a coil with a bobbin using the coil of the first aspect, the axial length of the cylindrical portion of the bobbin is at least twice the length in the width direction of the conductive thin film. At the position of the separated flange, a supporting rib for supporting the end face of the coil by abutting when the coil is fitted to the cylindrical portion is provided, and at the position of the outer periphery of the flange, a lead portion of the inner periphery is provided. A structure is provided in which a pull-out rib is formed in which a pull-out port for pulling out a lead portion of an outer peripheral portion in parallel is formed in a radial direction.

[0007]

According to the first aspect of the present invention, the conductive thin film on the inner peripheral portion is spirally displaced in a direction perpendicular to the winding direction, and the lead portion on the inner peripheral portion is drawn out in parallel with the lead portion on the outer peripheral portion. Therefore, it is possible to provide a coil that can prevent the conductive thin film on the inner peripheral portion from being damaged by bending, which has been a problem in the related art, and can suppress the protrusion of the electrode terminal on the lead portion on the inner peripheral portion. Also, fix the two leads in place.
Assuming that the leads on the inner circumference of the coil body
Pulled out parallel to and separated from the peripheral lead
This makes it possible to form a flat hard substrate or flat reinforcing plate
Route one lead or two leads
Without changing the orientation or posture of the
Solder of two lead parts by simple work
It can be attached or fixed.

According to the second aspect of the present invention, the axial length of the cylindrical portion of the bobbin is at least twice as long as the width of the conductive thin film , and the coil is mounted on the cylindrical portion at the position of the flange separated from the cylindrical portion. A support rib is provided for supporting the end face of the coil by abutting when fitted, and a pull-out port for pulling out the lead portion of the inner peripheral portion and the lead portion of the outer peripheral portion in parallel at the position of the outer peripheral portion of the flange portion. Since the structure is provided with the drawing-out ribs formed in the radial direction, a coil with a bobbin suitable for the structure of the coil can be provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, used in the present invention
The coil 12 is formed by winding a conductive thin film 4 such as a strip of copper foil to form the coil body 3, and forming the air core 5 at the center of the coil body 3 . In the coil 12 shown in FIG. 1, the conductive thin film 4 on the inner peripheral portion is helically displaced in a direction perpendicular to the winding direction, that is , in the band width direction of the conductive thin film 4 in a belt shape, and the lead portion 6 on the inner peripheral portion and the outer peripheral portion are displaced. Same phase as the lead part 7
It is pulled out in parallel in the opposite direction at the position . In the coil 12 shown in FIG. 2, the conductive thin film 4 on the inner peripheral portion is spirally displaced in a direction perpendicular to the winding direction, that is , in the band width direction of the conductive thin film 4 in a band shape, and the lead portion 6 on the inner peripheral portion and the outer peripheral portion are displaced. And the lead part 7
Are pulled out in parallel in the same direction at a phase position shifted by 180 ° .

In the coil 12 having the above structure, the conductive thin film 4 on the inner periphery is spirally shifted in a direction perpendicular to the winding direction, and the lead 6 on the inner periphery is parallel to the lead 7 on the outer periphery. This prevents the conductive thin film 4 in the inner peripheral portion from being damaged due to bending, which has been a problem in the past, and also suppresses the protrusion of the lead portion 6 in the inner peripheral portion to the side of the electrode terminal. Can be.

Next, FIGS. 9 and 10 show an example in which two coils 13 each having a bobbin are combined . The bobbin is so drawn that the inner lead portion 6 and the outer lead portion 7 can be pulled out in parallel. which was assembled the coil 12 of the 11
is there. The coils 13 with two bobbins have two cores 1
Sandwiching the 0 from both sides, it is assembled as a motor stator incorporated in the motor casing of the core combined.

That is, as shown in FIGS. 3 to 8, the bobbin 11 has a cylindrical portion 1 fitted to the air core 5 of the coil body 3.
4 and flanges 15, 16 formed at the end of the cylindrical portion 14.
And The axial length of the cylindrical portion 14 is
Of the conductive thin film 4 in the width direction or more . On the inner surface side of the flange portion 16, a supporting rib 1 is provided at a position separated from the cylindrical portion 14.
2, one end of the coil 12 is supported by being brought into contact with the supporting rib 1, and the other end of the coil 12 is
It has a structure in which it is supported by being in contact with the inner surface .

The supporting rib 1 is composed of two ribs 20 and 21 on a diameter line. The rib 21 has a cross-sectional shape of a radius R1, and the rib 20 has a cross-sectional shape of a radius R2 for guiding the conductive thin film 4 on the inner peripheral portion. A space 17 is provided between the cylindrical portion 14 and the rib 20.
Spaces 18 are formed between the conductive thin film 4 and these spaces 17 and 18 for spirally displacing the conductive thin film 4 in the inner peripheral portion in a direction perpendicular to the winding direction.

A guide rib 19 having a low step is formed between the rib 20 and the cylindrical portion 14, and the guide rib 19 is spirally displaced in a direction perpendicular to the winding direction and is in contact with the flange 16. The structure is such that the conductive thin film 4 is guided to the rib 20 along the guide surface 23 or the guide surface 24. A pull-out rib 2 is provided on the outer periphery of the flange 16 at a position facing the rib 20, and a gap (slip) is provided in the rib 2.
G) with the outlet 22 being opened in the radial direction.
It was formed, the outlet 22, leaving the lead portion 7 of the lead portion 6 and the outer peripheral portion of the inner peripheral portion at a predetermined distance
In order to pull out in parallel , conductive in the axial direction of the cylindrical portion 14
More than twice the width of sexual thin film 4 that has become long.

[0015] When assembling the coil 13 with a volume bottle, wrapped around the cylindrical portion 14 while shifting spirally a conductive thin film 4 of the inner peripheral portion in a direction perpendicular to the winding direction, the flange portion 16
Is guided along the guide ribs 19 along the guide ribs 19 in a state in which the lead portions 6 on the inner peripheral portion are pulled out from the outlet 22 of the ribs 2 in the same direction as the lead portions 7 on the outer peripheral portion. Performs retained in the collar portion 15 is fitted to the coil 12 to the cylindrical portion 14 of the bobbin 11 in this state, the coil 1 with the bobbin
Assemble 3 . Two coils 13 with two bobbins
Core 10 is sandwiched from both sides and assembled into a motor case that is also used as a core.

[0016] Thus, it is possible to draw out the lead portion 7 of the lead portion 6 and the outer peripheral portion of the inner peripheral portion in parallel from the outlet 22 of the rib 2. Therefore, the coil 12 which can prevent the conductive thin film 4 in the inner peripheral portion from being damaged due to bending, which is a problem in the related art, and suppress the protrusion of the electrode terminal of the lead portion 6 in the inner peripheral portion, and the coil 12 are used. A coil 13 with a bobbin can be provided.

[0017] The present invention, it <br/> phrases as limited to the embodiments, for example, can also be applied to other coil such Seo Renoidokoiru. In the above-described embodiment, the case where two ribs 20 and 21 are arranged on the diameter line as the supporting rib 1 has been described. However, the present invention is not limited to this, and one or three or more ribs may be equally arranged. Can also. In the above-described embodiment, the flange 15 is used to ensure insulation between the end face of the coil 12 and the motor case. However, the flange 15 may be unnecessary if an insulating sheet or the like can be used instead. it can. In addition, various conductive metal foils other than copper foil can be used as the conductive thin film 4.

[0018]

[Effects of the Invention] As is apparent from the above description, the present invention has the following effects. That is, the conductive thin film on the inner peripheral portion is spirally shifted in a direction orthogonal to the winding direction, and the lead portion on the inner peripheral portion is drawn out in parallel with the lead portion on the outer peripheral portion. To prevent damage to the conductive thin film on the inner circumference due to bending
It is possible to provide a coil capable of suppressing the protrusion of the electrode terminal of the lead portion on the inner peripheral portion.

In particular, the two lead parts are fixed in place.
Assuming that the lead on the inner circumference of the coil body
Make sure that the lead is parallel and separated from the outer leads.
With this, it can be used as a flat hard substrate or flat reinforcing plate, etc.
Route two leads or two leads
Do not change the orientation or posture of the
Soldering and fixing are possible by simple work just to match
Noh. Furthermore, the amount of protrusion of the two leads is minimized
It can be soldered or fixed. That is, two Lees
When the lead part has a certain length, the inner lead
Part and the lead part on the outer peripheral part
Also, two lead parts can be routed and two lead parts
By changing the orientation and posture, the two lead parts
It can be fixed to a hard board or reinforcing plate, but has two lead parts
If you want to minimize the protrusion of the
Must be shaped to fit the two protruding leads.
If it does not achieve its purpose. Hard boards and reinforcing plates
Forming in a shape is more complicated than forming a flat plate.
Not only fortunate, but the space it occupies is bulky
This is disadvantageous in terms of miniaturization. Also,
When mounting on a connector, etc.
The same can be said of the case. However, according to the present invention,
If so, there is no such disadvantage.

Further, to the axial length of the cylindrical portion of the bobbin much larger than the twice the width direction length of the coil, the position of the flange spaced from the cylindrical portion, when fitted to the coil in the cylindrical portion A support rib is provided to support the coil by abutting the end face of the coil, and a drawing port is formed in the radial direction at the position of the outer peripheral portion of the flange to draw out the inner peripheral lead portion and the outer peripheral lead portion in parallel. since it was provided with ribs for the drawer structure, the structure
It is possible to provide a coil with appropriate volume bottles coil.

[Brief description of the drawings]

1 is a perspective view showing the coils.

FIG. 2 is a perspective view showing another coil.

[3] The bobbin coil with ball bin is a front view showing a state in which removal of the flange portion.

FIG. 4 is a side view of the bobbin of FIG. 3;

FIG. 5 is a side view showing a flange portion of the bobbin.

FIG. 6 is a side view showing a bobbin.

FIG. 7 is a front view showing a coil.

FIG. 8 is a side view showing the coil partially broken away.

FIG. 9 is a front view showing a coil with a bobbin in a state where a flange is removed.

FIG. 10 is a side view showing a coil with a bobbin.

[Explanation of symbols]

1 rib 3 coil body 4 electroconductive thin film 5 air-core portion of the lead portion 7 the outer peripheral portion of the inner 6 peripheral portion lead portion 10 the core 11 the bobbin 12 coil 13 coil 14 cylindrical portion of the bobbin with the ribs 2 drawer for supporting 15 Flange 16 Flange 17 Space 18 Space 19 Guide rib 20 Rib 21 Rib 22 Drawer outlet 23 Guide surface 24 Guide surface R1 R2 R2

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tetsuo Hoshina 5329 Shimosuwa-cho, Suwa-gun, Nagano Pref. Sankyo Seiki Seisakusho Co., Ltd. (56) References −328652 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02K 3/00-3/52 H01F 5/00-5/02

Claims (2)

(57) [Scope of request for utility model registration] An inner peripheral portion of a coil main body (3) formed by providing an air core (5) with a conductive thin film (4) and winding the coil body (3) spirally in a direction perpendicular to the winding direction. A coil (12) having a peripheral lead (6) pulled out in parallel with a peripheral lead (7), and a coil for mounting the coil (12).
A bobbin (11), and an outer peripheral portion of the bobbin (11), wherein the coil body (3) is provided.
Conductive thin film due to the gap in the direction perpendicular to the winding direction
Form a drawer (22) that is at least twice as long as the width of (4)
From the outlet (22).
(3) Inner peripheral lead part (6) and outer peripheral lead part
(7) is drawn parallel and apart from
Coil with bobbin (13). 2. An air core (5) is formed by a conductive thin film (4).
A bobbin (11) provided with a cylindrical portion (14) fitted with the inner periphery of the coil body (3) formed and wound and flanges (15, 16) at both ends of the cylindrical portion (14). And the axial length of the cylindrical portion (14) is equal to the width of the conductive thin film (4).
When the coil main body (3) is fitted to the cylindrical portion (14) at least twice , one end of the coil main body (3) is connected to one of the flange portions (15).
And the other end of the coil body (3) is supported by a rib (1) provided on the inner surface of the other flange (16) , and the rib (1) and the cylindrical portion (14) are separated from each other. Provided by a gap in a direction perpendicular to the winding direction of the coil body (3).
A rib (2) formed with a radially extending outlet (22) having a length of at least twice the width of the conductive thin film (4) is provided on the outer periphery of the flange (16) of the bobbin (11). The lead portion (6) on the inner peripheral portion and the lead portion (7) on the outer peripheral portion of the main body (3) are spirally displaced in the axial direction of the cylindrical portion (14 ) from the outlet (22) of the rib (2). this draw away
A coil (13) with a bobbin characterized by the following .