JP2002359110A - Connection method of winding bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the connection method of winding bobbins capable of simply, accurately, and firmly connecting a plurality of winding bobbins by a simple means, and providing inexpensive coils. SOLUTION: The connection method connects winding bobbins 5 and 5 while jaw sections 2A and 2A of the bobbins 5 and 5 are being confronted mutually. In the bobbins 5 and 5, a winding section 1 and the jaw sections 2 and 2A being extended at both the sides of the winding section 1 are provided, and at the same time a recess 4 that has a projection 3 and space according to the external shape of the projection 3 and can insert the projection 3 is provided at least at the jaw section 2A of the jaw sections 2 and 2A. At the tip side of the projection 3, a lock nib 3A for locking the projection 3 to the recess 4 is formed. At the recess 4, an engagement section 4a for locking and fixing the lock nib 3A is formed. The jaw sections 2A and 2A of the winding bobbins 5 and 5 are allowed to oppose each other for inserting projections 3 and 3 into the recesses 4 and 4, and the lock nibs 3A and 3A are locked and fixed to the engagement sections 4A and 4A of the recesses 4 and 4 for connecting the winding bobbins 5 and 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding bobbin suitable for simply and accurately connecting a winding part and a winding bobbin having jaws at both ends of the winding part. .

[0002]

2. Description of the Related Art Recently, coil parts such as relays are frequently used as magnetic flux generating means, impedance means, or various sensor means in various electronic devices. These coil components are used by winding a predetermined number of insulated wires made of a magnet wire or the like on a winding bobbin integrally formed of an insulating resin, for example. By the way, among such coil parts, depending on the use, as shown in FIG. 3, the winding bobbins 5A, 5A are joined together by abutting one of the jaws 2B, 2B to each other, and each winding part 1, For example, a coil formed by winding a predetermined number of insulated wires by an automatic winding machine or the like was also used. In such a coil, the winding bobbins 5A, 5A
As means for joining A, the adhesive 6 is applied and fixed to the winding bobbins 5A, 5A positioned by abutting one of the jaws 2B, 2B, or the winding bobbins 5A, 5A are fixed by screws. Means for doing so were commonly employed. In addition,
Although not shown in detail, a terminal pin for connecting a coil terminal is arranged on one of the jaws 2B, 2B so that the coil terminal is connected by soldering.

[0003]

As described above, when winding bobbins are connected and used, the method of bonding and applying an adhesive requires a jig for accurately positioning and fixing the winding bobbins. In addition, there is a problem in that the bonding operation is difficult due to a long curing time of the adhesive, and the obtained coil is expensive. Further, in the method of joining the winding bobbins by screwing, the number of components is increased, and the shape of the winding bobbin is increased, and screwing work is required.

Accordingly, an object of the present invention has been made in view of such circumstances, and an inexpensive coil in which a plurality of winding bobbins can be easily, accurately and firmly connected by simple means is provided. It is an object of the present invention to provide a winding bobbin coupling method that can be performed.

[0005]

According to a first aspect, the present invention comprises a winding part 1 and jaws 2, 2A extending at both ends of the winding part 1, and the jaw parts 2, 2A. At least one jaw 2A
Winding bobbins 5, 5 each having a projection 3 and a recess 4 having a space corresponding to the outer shape of the projection 3 and into which the projection 3 can be inserted.
In the form of a winding bobbin in which the jaws 2A and 2A are abutted to each other, and a locking claw 3A for locking the projection 3 to the recess 4 is provided on the tip side of the projection 3. The recess 4 is formed with an engaging portion 4A for locking and fixing the locking claw 3A. The jaws 2A, 2A of the winding bobbins 5, 5 are opposed to each other, and the projections 3, 3 are opposed to each other. Into the recesses 4, 4
The present invention provides a winding bobbin coupling characterized in that the winding bobbins 5, 5 are coupled by locking and fixing the 3A, 3A to the engaging portions 4A, 4A of the recesses 4, 4, respectively. In the method of coupling the winding bobbins according to the first aspect, the winding bobbins 5, 5 positioned via the projections 3, 3 and the recesses 4, 4 provided on the jaws 2A, 2A of the winding bobbins 5, 5, respectively. 5 are easily and firmly connected,
In addition to excellent dimensional accuracy, it is possible to reliably provide an inexpensive coil that does not require adhesive application work or screw work.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings. Note that the present invention is not limited by this.

FIG. 1 is an explanatory view showing the configuration of a winding bobbin according to the present invention. FIG. 1A is a front view of the winding bobbin, and FIG. FIG. 4C is a plan view of the bobbin, and FIG. 4C is a cross-sectional view taken along the line XX of FIG. FIG. 2 is an explanatory diagram of a method of coupling winding bobbins according to the present invention. In the figure, reference numeral 5 denotes a coil bobbin including a winding part 1 and jaws 2, 2A extending at both ends of the winding part 1. The coil bobbin 5
It is formed by molding a polybutylene terephthalate, a polyamide resin, a liquid crystal resin, a polyetherimide resin, or the like, and a predetermined number of insulated wires such as magnet wires are wound around the winding portion 1 to form a coil. The specific dimensions of the coil bobbin 5 are as follows: the winding part 1 has a length of 10 mm to 20 mm and an inner diameter of 15 mm to 30 m
m, outer diameter 20mm-40mm, jaw 2 thickness 5mm-10mm, inner diameter 15mm
~ 30mm, outer diameter 30mm ~ 50mm, jaw 2A thickness 10mm ~ 15mm, inner diameter 15mm ~ 30mm, outer diameter 30mm ~ 50mm. Reference numeral 3 denotes a protrusion provided on the jaw 2A side, a height of 1 mm to 3 mm, and an outer diameter of 1 mm to 3 mm.
φ is formed. A locking claw 3A having a length of 0.5 mm to 1 mm provided by cutting out from the vicinity of the center of the protrusion 3 toward the front end is formed on the front end of the protrusion 3.
Reference numeral 4 denotes a recess provided in the jaw 2A and having a space corresponding to the outer shape of the projection 3 and formed so that the projection 3 can be inserted. The recess 4 has a depth of 1.2 mm to 3.6 mm and an inner diameter of 1.2 mm. ~ 3.6mm
A space of φ is formed. An engagement portion 4A is formed below the concave portion 4 so as to correspond to the locking claw 3A of the projection 3 and lock and fix the locking claw 3A to the concave portion 4.

With reference to FIG. 2, a method of coupling winding bobbins using the winding bobbin 5 having such a configuration will be described. First, the jaws 2A, 2A of the two winding bobbins 5, 5 to be joined
The winding bobbins 5, 5 are connected only by inserting the protrusions 3, 3 into the corresponding recesses 4, 4, respectively, so that the protrusions 3 and the recesses 4 face each other and are positioned. That is, the locking claws 3A, 3A of the projections 3, 3 inserted into the recesses 4, 4,
Structurally inevitably, they are locked and fixed to the corresponding engaging portions 4A, 4A, and the winding bobbins 5, 5 are firmly connected to each other, so that they never come off. As a result, the positioning jig, adhesive application work, or screw work, which was required in the past, becomes unnecessary, and the winding bobbins can be firmly connected to each other by simple means with good dimensional accuracy. Can be provided.

[0009]

According to the present invention, a plurality of winding bobbins can be firmly connected with good dimensional accuracy by simple means, and an inexpensive coil can be provided. The practical effect is large.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the configuration of a winding bobbin according to the present invention, wherein FIG. 1 (a) is a front view of the winding bobbin, FIG. 1 (b) is a plan view of the winding bobbin, and FIG. FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 2 is an explanatory view of a method of coupling winding bobbins according to the present invention.

FIG. 3 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 1 winding part 2,2A, 2B jaw part 3 protruding part 3A locking claw 4 concave part 4A engaging part 5,5A winding bobbin 6 adhesive

Claims (1)

[Claims] The present invention comprises a winding part (1) and jaws (2, 2A) extending at both ends of the winding part (1), and at least one jaw (2A) of the jaws (2, 2A) has a projection (3). A method of connecting winding bobbins in which winding bobbins 5, 5 each having a space corresponding to the outer shape of the projection 3 and provided with a recess 4 into which the projection 3 can be inserted are joined by abutting the jaws 2A, 2A of each other. A locking claw 3A for locking the projection 3 in the recess 4 is provided on a tip end side of the projection 3 and an engaging portion 4A for locking and locking the locking claw 3A in the recess 4. To form the winding bobbin 5,5
The jaws 2A, 2A are opposed to each other, and the protrusions 3, 3 are inserted into the opposed recesses 4, 4, respectively, and the locking claws 3A, 3A are engaged with the engaging portions 4A, 4A of the recesses 4, 4, respectively. A method of coupling winding bobbins, wherein the winding bobbins 5, 5 are fixedly connected to each other.