JPH043453Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a connecting device for connecting a winding start portion or a winding end portion of a solenoid coil to an external lead wire.

[Summary of the idea]

In the present invention, an eyelet is attached via a pedestal to the flange at one end of the bobbin on which the solenoid coil is wound, and a locking hook is provided to connect the beginning or end of winding of the coil to the eyelet. At the same time, the lead wire for external extraction is secured by the locking hook and is wound circumferentially around the boss of the flange, and the tip of this lead wire is connected to the eyelet by soldering. This is what I did.

[Conventional technology]

In order to connect the winding start portion 2 or the winding end portion 3 of the solenoid coil 1 to an external lead wire, a structure as shown in FIG. 5 has conventionally been adopted. That is, the winding start part 2 or the winding end part 3 is connected to a relay pin 6 on a pedestal 5 formed on a flange 4 of a bobbin around which the coil 1 is wound. and one relay pin 6
A resistor 7 was connected to the terminal, and a diode 8 was connected to the other relay pin 6. Further, on the bobbin 4, another pedestal 9 is provided at a position shifted from the pedestal 5 in the circumferential direction, and a connecting pin 10 is planted therein.
I was trying to connect it.

[Problem that the invention attempts to solve]

According to such a conventional structure for connecting the lead wires 11, the tip portions of the lead wires 11 are not wound around the pins 10, but are connected by being soldered by dots. Therefore, there was a problem in that the reliability of the connection between the lead wire 11 and the pin 10 by soldering was low. Another disadvantage is that a jig is required to determine the position of the external lead wire 11. Furthermore, after the coil 1 is molded, the creepage distance along the lead wire 11 from the position where the external lead wire 11 exits to the outside of the mold to the part to be soldered is short, making it easy for water to enter the soldered part. There were flaws. The present invention has been developed in view of these problems, and it is designed to solve the above-mentioned drawbacks and to reliably connect the winding start part or the winding end part of the solenoid coil to the external lead wire. The object of the present invention is to provide a lead wire connection device that provides a lead wire connection device.

[Means to solve the problem]

The present invention provides a pedestal on the flange at one end of the bobbin on which the solenoid coil is wound, an eyelet is attached to the pedestal, and the winding start part or the winding end part of the solenoid coil is connected to the eyelet. A locking hook is provided on the flange at a position offset from the pedestal in the circumferential direction, and the lead wire for external extraction is locked by the locking hook, and the tip thereof is attached to the flange. The eyelet and the lead wire are connected to each other by soldering.

[Effect]

Therefore, according to the present invention, the external lead wire is connected to the eyelet by soldering while being locked by the locking hook, and is also connected to the end of the solenoid coil via the eyelet. will be done. Therefore, a reliable connection is achieved, and it becomes possible to improve the reliability of the connection between the end of the coil and the lead wire. Furthermore, since the locking hook enables positioning of the external lead wire, no jig is required. Furthermore, since the lead wire is wound around the flange in the circumferential direction, it is possible to increase the creepage distance when the solenoid coil is molded.

【Example】

1 and 2 show a solenoid coil according to an embodiment of the present invention, and this solenoid coil 15 is wound around a bobbin. The bobbin has upper and lower flanges 16 and 17,
The winding start part 18 and the winding end part 19 of the coil 15 are located in the notch 2 of the upper flange 16, respectively.
0 and is drawn out above the bobbin 16. Two eyelets 21 are arranged on the flange 16, and each eyelet 21 is mounted on a pedestal 22. Eyelet 21 is small hole 23
The ends 18 and 19 of the wire are each soldered to the eyelet 21 while the wire is inserted through the small hole 23. A resistor 24 is connected to one of the two eyelets 21. On the other hand, a diode 25 is connected to the other eyelet 21. Furthermore, a pair of locking hooks 26 are formed on the flange 16 of the bobbin at positions offset by about 180 degrees in the circumferential direction with respect to the pedestal 22, and these hooks 26 allow the lead wire for external extraction to be secured. 27 is adapted to be locked. The tip of the lead wire 27, which is held by the hook 26, is pulled out around the outer circumference of the boss 28 of the bobbin, and the tip is connected to the eyelet 21. Therefore, with such a solenoid coil 15, the winding start part 18 or the winding end part 19 of the solenoid coil 15, together with the resistor 24 and the diode 25, are inserted through the small hole 23 of the eyelet 21 and then soldered. This improves soldering reliability. Further, the external lead wire 27 is first locked by the locking hook 26, and then
It is wound around the outer periphery of the boss 28 and is further inserted through the small hole 23 of the eyelet 21 to open the eyelet 21.
is soldered to. Therefore, the lead wire 27 and the terminal of the coil 15 are connected through the eyelet 21, and the reliability of soldering for this connection is improved. Furthermore, according to the connection structure of the lead wire 27 of the solenoid coil 15, since the lead wire 27 is adapted to be locked to the locking hook 26, it is necessary to hold the lead wire 27 in the correct position. No need for jigs. Also, connect the lead wire 27 to the boss 28.
This solenoid coil 15 is connected to the eyelet 21 after being connected to the eyelet 21 after being connected to the eyelet 21 after being wound around the flange 16 along the outer peripheral surface of the solenoid coil 15.
When molded, the distance from the position protruding from the mold to the soldered part, that is, the creepage distance, increases, making it difficult for water to enter the soldered part. This makes it possible to increase reliability after molding. FIG. 3 shows the state in which the solenoid coil 15 is molded, and the connection portion of the lead wire 27 is sealed with resin by the molding. And the solenoid coil 15 according to this embodiment
are stacked in two stages to form a double solenoid coil.
The upper and lower solenoid coils 15 are arranged to sandwich a magnetic steel plate 31, and in this state are inserted into a yoke 32 shown in FIG. 4. A step 33 is formed in the yoke 32, and the yoke 32 is tightened with the step 33 receiving the outer circumferential portion of the lower surface of the plate 31, thereby preventing the deformed portion. 34 is formed on the yoke 32. Therefore, by this tightening, the yoke 32
The plate 31 is formed by the stepped portion 33 and deformed portion 34.
will be securely fixed. Therefore, according to such a structure, fixing of the solenoid coil 15 and magnetic connection between the plate 31 and the yoke 32 can be achieved simultaneously and reliably. Also, the plate 31 for the yoke 32
The position of plate 3 can be reliably determined.
It becomes possible to manufacture the plunger solenoid using the position No. 1 as a dimensional reference. Furthermore, other parts for fixing the solenoid coil 15 are not required. This makes it possible to reduce the cost of the plunger solenoid. In this embodiment, crimping to form the deformed portion 34 is performed at a plurality of locations along the circumferential direction of the yoke 32, for example, at three locations at 120 degree intervals.

[Effect of the idea]

As described above, the present invention connects the winding start part or the winding end part of the solenoid coil to the eyelet provided on the pedestal of the flange of the bobbin, and connects the external drawer that is locked by the locking hook. A lead wire is wound around the flange in the circumferential direction of the flange, and the tip of the lead wire is connected to the eyelet by soldering. Therefore, according to such a connection structure, the connection between the external lead wire and the solenoid coil is reliably performed, and the reliability of the connection is improved. Further, since the lead wire can be positioned using the locking hook, a jig for positioning the lead wire is not required. Furthermore, since the lead wires locked by the locking hooks are routed around the circumference of the flange, the creepage distance of the lead wires after molding is longer, making it difficult for water to enter the soldered connection area. Becomes a structure.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing the connection structure of the lead wires of a solenoid coil according to an embodiment of the present invention, Fig. 2 is a side view of the main part, and Fig. 3 is a molded and stacked structure in two stages. FIG. 4 is a front view, FIG. 4 is a sectional view of two stacked solenoid coils inserted into the yoke, and FIG. 5 is a perspective view of a main part showing a conventional lead wire connection structure. In addition, in the symbols used in the drawings, 15... Solenoid coil, 16... Flange, 18... Winding start part, 19... Winding end part, 21... Eyelet, 22... Pedestal, 23... Small hole. , 26...
Locking hook, 27...Lead wire for external extraction,
28...He is the boss.

Claims (1)

[Scope of utility model registration request] A pedestal is provided on the flange at one end of the bobbin on which the solenoid coil is wound, an eyelet is attached to the pedestal, the winding start part or the winding end part of the solenoid coil is connected to the eyelet, and the solenoid coil is wound on the flange. and a locking hook is provided at a position offset from the pedestal in the circumferential direction,
The lead wire for external extraction is locked by the locking hook, the tip thereof is wound around the circumferential direction of the flange, and the eyelet and the lead wire are connected by soldering. A solenoid coil lead wire connection device featuring: