JPH0569424U - Connection structure between winding and external lead wire in electromagnetic clutch - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To improve the working speed and reliability by making it possible to automate the connection between the winding of the exciting coil used in the electromagnetic clutch and the lead wire or connector. What I did. [Constitution] Bobbin 12 with double flange on one side
In the electromagnetic coil, the inner flange 15 of the double flange is provided with notches 15a and 15b through which the winding start terminal and the winding end terminal of the coil winding pass, and the outer flange 14 is provided with an end of the lead wire 7. A fan-shaped notch 14a through which the connector portion or the connector 25 passes, and both terminals of the coil winding and the lead wire 7 or the connector 25 through a fan-shaped printed board 20 inserted between the double flanges. I tried to connect with. In this case, the printed circuit board 20
It is desirable to provide a plurality of connector lands shared with the lead wire 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a connection structure between an exciting coil winding such as an electromagnetic clutch and an external lead wire.

[0002]

[Prior Art]

 The connection structure between the winding of the exciting coil of the conventional electromagnetic clutch and the external lead wire has been constructed as shown in FIG. In the figure, 1 is an electromagnetic clutch, and 2 is a bobbin for housing an exciting coil. The bobbin 2 has a flange 3 on one end, a flange 4 on the other end, and a flange 5 on the inner side close to the flange 4, and the flange 4 and the flange 5 form a double flange. An exciting coil 6 is housed in between, and lead wires 7a and 7b (hereinafter, lead wire may be collectively referred to as 7) are wound and housed between the flange 5 and the flange 4, respectively. The winding start terminal 6a and the winding end terminal 6b of the winding 6 are twist-coupled to the terminals of the lead wires 7a and 7b, respectively, and soldered as shown by 8, and the outer circumference is wound with an insulating tape 9. Since the lead wire 7 is housed in the double flange, it has a convenient advantage in handling, packaging, shipping, etc. as compared with the single flange.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional one, as described above, the torsional coupling and the soldering of the connection between the winding start and end terminals 6a and 6b of the coil 6 and the lead wire 7a and 7b terminals are Since the work was done manually by the worker, the work speed was limited, and the reliability was not perfect, so improvement of this work was required.

[0004]

[Means for Solving the Problems]

 According to the present invention, the inner flange of the double flange is provided with respective notches through which the winding start and winding end terminals pass, and the outer flange is provided with a fan-shaped printed circuit board through which the end of the lead wire or the connector passes. The above problem was solved by inserting it and connecting both terminals of the coil winding and the lead wire or connector through this printed circuit board.

[0005]

[Action]

 The lead wire terminals are automatically soldered to the external lead wire lands (also used for the connector) provided on the printed circuit board, and the coil winding terminals are automatically soldered to the winding lands. Since they are connected by printed wiring, the work of connecting the lead wire and coil winding is simple and reliable.

[0006]

【Example】

The configuration of the present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 is a longitudinal sectional view of the exciting coil 21 of the electromagnetic clutch 11, FIG. 2 is a side view seen in the direction A of FIG. 1, FIG. 3 is a sectional view taken along the line BB ′ of FIG. 1, and FIG. FIG. In each of these drawings, 12 is a bobbin, which has the same shape as the conventional bobbin 2 and is made of an insulating material such as plastic and has a double flange consisting of an outer flange 14 and an inner flange 15 at one end thereof. 2, the outer flange 14 is provided with a fan-shaped notch 14a as shown in FIG. 2, and the inner flange 15 is provided with two radially elongated notches 15a, 15b as shown in FIG. The notches 14a are provided so as to be located on both outer sides of the fan shape. Reference numeral 20 is, for example, a fan-shaped printed circuit board made of phenolic resin. The printed circuit board 20 is mounted inside the notch 14a between the outer flange 14 and the inner flange 15, and as shown in FIG. Winding lands 21a, 21b are provided near the left and right ends, lead wire lands 22, 22a, 22b, 22c are provided near the center, and a small hole 24 is provided at the center of each land. The pitches p ₁ , p ₂ and p ₃ of the pair 22 and 22a, 22 and 22b, 22 and 22c respectively have different values so that they can be engaged with a commercially available connector 25 (see FIG. 2). The lands 21a and 22 and the lands 21b and 22a to 22c are connected by a printed wiring 23, respectively. Reference numeral 26 is an insulating cover, which is made of elastic polyacetal resin as shown in FIG. 5 and is formed into an annular shape having protruding tip portions 26a and 26b. As shown in FIGS. The width of the bobbin 12 is slightly smaller than the distance between the flanges 13 and 15 at the tips 26a and 26b so as to cover the outer circumference of the coil 6 wound between the flanges 13 and 15 of 12 and bent inward. The coil 6 is exposed (coil retainer) and insulates by engaging with the outer circumference of the bobbin 12.

Next, the assembly method will be described. First, the terminals of the lead wires 7a and 7b are inserted into the small holes 24 of the lead wire lands 22 and 22b of the printed board 20, respectively, and soldered on the opposite surface. Note that all of these tasks can be performed automatically. On the other hand, the coil 6 wound on the bobbin 12 is wound sideways so that the winding start and end terminals 6a and 6b are slightly longer, and the bobbin 12 is placed horizontally so that the flange 14 is on the upper surface, and the bobbin 12 is laid outside the notch 14a. The printed circuit board 20 to which the wires 7a and 7b are soldered is held horizontally with the soldering surface downward and at a position at an intermediate height between the flange 14 and the flange 15, and the terminals 6a and 6b are connected to the printed circuit board 20. After being inserted into the small holes 24 of the winding lands 21a and 21b respectively from the lower surface of the wiring board, automatic soldering is performed from the upper surface direction of the printed circuit board 20, and then the printed circuit board 20 is laterally moved toward the center of the bobbin 12. 2 and then insert the insulating cover 26 by using elasticity. In the case of the connector 25, instead of the lead wire, a set of lands matching the pitch of the connector terminals may be selected.

[0008]

[Effect of the device]

 As described above, the present invention is constructed by providing the required notches on the inside and outside of the double flange as described above and housing the printed circuit board for connection, which is excellent as described below. Have the effect. The terminals of the lead wire or the terminals of the connector and the coil winding are automatically soldered to the lands of the printed circuit board, and each land is printed with the related land, so the coil winding and the lead wire or The connector can be connected easily and securely. Therefore, the reliability of the connection part is high, and most of the connection work can be automated, which improves the work speed and reduces the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a front view of a half section showing an embodiment of the present invention.

FIG. 2 is a side view seen from the direction A in FIG.

3 is a cross-sectional view taken along the line B-B 'in FIG.

FIG. 4 is a plan view of a printed circuit board according to the present invention.

FIG. 5 is a perspective view of an insulating cover according to the present invention.

FIG. 6 is a half-section vertical front view showing the configuration of a conventional example.

[Explanation of symbols]

 6: Coil 6a, 6b: Winding terminal 7a, 7b: Lead wire 11: Excitation coil 12: Bobbin 14: Outer flange 14a: Notch 15: Inner flange 15a, 15b: Notch 20: Printed circuit board 25: Connector

Claims (2)

[Scope of utility model registration request] 1. In an electromagnetic coil having a bobbin having a double flange on one side, an inner flange of the double flange is provided with respective notches through which a winding start terminal and a winding end terminal of a coil winding pass. The flange is provided with a fan-shaped notch through which the end of the lead wire or the connector passes, and both terminals of the coil winding and the lead are connected through a fan-shaped printed board inserted between the double flanges. A connection structure between a winding wire and an external lead wire in an electromagnetic clutch or the like, characterized in that a lead wire or a connector is connected. 2. The winding in an electromagnetic clutch according to claim 1, wherein the printed circuit board is provided with a plurality of connector lands shared with a lead wire so that the connector can be connected to a plurality of types of connectors. Connection structure with external lead wires, etc.