JPH04103624U - coil bobbin - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the automation of manufacturing of transformers, etc., and to reduce the size and cost of manufacturing equipment. Also, the structure of the transformer etc. is simplified and the coil layer is made thinner. [Configuration] Winding section 2 that winds wire to form a coil
, a base 3 integrally provided at the end of the winding portion 2, and terminal pins 4 implanted in the base 3. Further, the base 3 is offset in a direction away from the winding part 2, and tape mounting surfaces 5, 5 of a predetermined width Lo that are continuous with the winding surface 2f of the winding part 2 are provided between the winding part 2 and the base 3. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a coil suitable for use in switching transformers that require a high degree of insulation. Regarding Lubobin.

0002

[Conventional technology]

FIG. 4 shows a conventional coil bobbin 50. The coil bobbin 50 shown in the figure is a wire A winding part 51 is provided for winding a coil to form a coil, and a flange part is provided at one end of this winding part 51. 52, and a base 53 at the other end. In addition, the base 53 has a plurality of terminal pins 54..., and further has a plurality of terminal pins 54... located between each terminal pin 54... The base 53 has guide slits 55.

0003 As shown in FIG. 5, the coil bobbin 50 has burrs on both ends of the winding portion 51. The barrier tapes 61 and 62 are wrapped around each other, and the barrier tapes 61 and 62 are wrapped with A coil 64 is formed by winding the ear 63. On the other hand, the tip side of the wire 63 is insulated. the insulating tube 65 into the guide slit 55, and the insulating tube 65 is inserted into the guide slit 55. The tip of the wire 63 is tied around the terminal pin 54 and fixed by soldering.

0004

[Problem that the idea aims to solve]

However, the conventional coil bobbin 50 is not suitable for switching devices that require a high degree of insulation. When used for insulation, the insulation tube 65 ( The use of silicone tubes, etc.) has become essential, especially when automating manufacturing equipment. It becomes a big obstacle.

[0005] That is, when the insulating tube 65 is used, the wire 6 to the insulating tube 65 3, the insertion process of the insulating tube 65 into the guide slit 55, etc. As a result, the automation process becomes significantly more complex, resulting in larger and more expensive manufacturing equipment. In addition, the coil 64 has a thick layer due to the bulky insulation tube 65. However, the transformer (coil) itself has the disadvantage of complicating the structure and increasing its size. Ta.

[0006] This invention solves the problems that exist in conventional technology, and it In addition to making it easier to automate production such as The purpose is to provide a coil bobbin that can simplify the structure of transformers, etc. and further downsize it. shall be.

[0007]

[Means to solve the problem]

The present invention includes a winding part 2 that winds the wire W to form a coil C1... A coil comprising a base 3 integrally provided at the end and terminal pins 4 implanted in the base 3. When constructing the winding part 1, in particular, the base part 3 is turned off in the direction away from the winding part 2. A predetermined width Lo continuous to the winding surface 2f of the winding part 2 is set between the winding part 2 and the base part 3. The present invention is characterized in that tape mounting surfaces 5, 5 are provided.

[0008]

[Effect]

According to the coil bobbin 1 according to the present invention, the base portion 3 is rotated in the direction away from the winding portion 2. A predetermined width L continuous to the winding surface 2f of the winding part 2 is provided between the winding part 2 and the base part 3. In order to provide the tape mounting surfaces 5 and 5 of o, the width of the insulating tape to be used is set to a predetermined width Lo. can only be made wider.

[0009] As a result, any coil (coil layer), for example from C1 to other coil C2... (or The creepage distance to the wire W) increases based on the predetermined width Lo, and is necessary for insulation performance. A sufficient creepage distance can be secured. Therefore, an insulating tube becomes unnecessary.

0010

【Example】

Next, preferred embodiments of the present invention will be described in detail based on the drawings.

[0011] First, the structure of the coil bobbin 1 according to the present invention will be explained with reference to FIGS. 1 and 2. explain.

0012 The coil bobbin 1 can be roughly divided into a rectangular frame-shaped winding around which wire is wound to form a coil. A wrapping portion 2, a base portion 3 provided at one end of the wrapping portion 2, and a collar portion 11 provided at the other end of the wrapping portion 2. and a plurality of terminal pins 4 implanted in the base 3, and the parts other than the terminal pins 4... The parts are integrally molded from synthetic resin.

[0013] The base 3 also includes a left base 3x and a right base 3y, each of which is separated from the winding part 2. offset in the direction. That is, between the winding part 2 and each base part 3x, 3y, the connecting part 12x, 12y is provided, and is continuous to the winding surface 2f of the winding section 2 by each connecting part 12x, 12y. Tape mounting surfaces 5, 5 having a predetermined width Lo are formed. In addition, the virtual line 3s is the conventional The position of the base is shown.

[0014] On the other hand, six terminal pins 4 are planted at regular intervals on each base 3x and 3y. and protrude from each base 3x, 3y, and between each terminal pin 4... Guide slits 13 are provided in each of the base portions 3x and 3y. Note that the guide slit The bottom surface of the tray 13 and the tape mounting surfaces 5, 5 are continuous surfaces.

[0015] Next, a method for manufacturing a transformer using such a coil bobbin 1 is shown in FIG. Explain with reference to.

[0016] First, barrier tapes 15 and 16 having a width Lb are wound around the winding portion 2 of the coil bobbin 1. do. In this case, one barrier tape 15 is placed close to the flange 11 side and relatively thick. At the same time, the other barrier tape 16 is wound close to the tape attachment surface 5 side. to wear Further, a wire W is wound around the winding surface 2f between the barrier tapes 15 and 16, This constitutes a coil C1. One end (Wp) of the wire W is attached to the tape. Insert the terminal pin 4 along the terminal pin mounting surface 5 and through the guide slit 13. At the same time, the other end of the wire W is also tied to another terminal pin 4. Geru.

[0017] In addition, a creeping tape (insulating tape) 17 that is wider than the barrier tape 16 is used as a barrier. It is pasted so as to cover the tape 16 and the tape attachment surface 5. In this case, creepage tape The width Lf of 17 is Lb (width of the barrier tape) + Lo (width of the tape attachment surface). The surfaces to be pasted are two opposite sides. In addition, the barrier tape 16 and creepage Instead of the tape 17, an integrally molded product made of synthetic resin or the like may be used. Then, An interlayer tape 18 having a width corresponding to the axial length of the winding portion 2 is wound on top of these. wear. This completes the production of the first layer coil C1. Similarly, the second layer The coil C2, the third layer coil C3, and so on can be manufactured in sequence.

[0018] With this configuration, from any coil (coil layer), for example C1. The creepage distance to the other coil C2... (wire W) becomes longer based on the predetermined width Lo. . As a result, the creepage distance necessary for insulation performance can be secured, and conventional insulation tubes can be completely removed. No longer needed. Furthermore, the creepage distance can be easily secured to be approximately twice that of the conventional example (Fig. 4). Ru.

[0019] Although embodiments have been described in detail above, the present invention is not limited to such embodiments. However, the details of the structure, shape, etc. do not deviate from the gist of the invention. You can change it arbitrarily.

[0020]

[Effect of the idea]

In this way, the coil bobbin according to the present invention has the base part turned away from the winding part. Attach a tape of a specified width that is continuous to the wrapping surface of the wrapping part between the wrapping part and the base. Since the surface is provided, the following remarkable effects are achieved.

[0021] Full automation can be easily achieved when manufacturing transformers, etc., and manufacturing The device can be made smaller and lower in cost.

[0022] The structure of transformers, etc. can be simplified, and the coil layer can be made thinner. This makes it possible to downsize parts.

[Brief explanation of drawings]

FIG. 1 is a front view of a coil bobbin according to the present invention;

[Fig. 2] A perspective view of the coil bobbin,

[Figure 3] A partial front sectional view of a transformer manufactured using the same coil bobbin.

FIG. 4 is a front view of a coil bobbin according to conventional technology;

[Fig. 5] Partial front sectional view of a transformer manufactured using the same coil bobbin,

[Explanation of symbols]

1 coil bobbin 2 Winding section 2f winding surface 3 Base 4 Terminal pin 5 Tape attachment surface

Claims (1)

[Scope of utility model registration request] Claim 1: A coil bobbin comprising: a winding part for winding a wire to form a coil; a base integrally provided at the end of the winding part; and a terminal pin implanted in the base; A coil bobbin characterized in that a tape mounting surface of a predetermined width is provided between the winding part and the base, offset in a direction away from the winding part, and continuous with the winding surface of the winding part.