JPS6246962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a semiconductor device with a spring terminal, which incorporates a semiconductor element such as a positive temperature coefficient thermistor and is connected to a terminal of a motor, etc., and in particular, reduces the number of parts by sharing parts. This is one of its purposes.

Figure 1 shows the equivalent circuit of a typical capacitor-start motor. 1 is the main winding, 2 is the starting winding, 3 is the positive characteristic thermistor, and 4 is the starting capacitor (split-phase starting type). (omitted for motors), A, B, and C in the figure are the second motor terminals.
As shown in the figure, this is the part led out to the outside of the motor case D. When the motor is started, a current flows through the circuit of the starting winding 2, the positive temperature coefficient thermistor 3, and the capacitor 4, and then the resistance of the positive temperature coefficient thermistor 3 suddenly increases, and current flows through the circuit of the main winding 1.
The motor enters steady operation. The present invention provides these A, B,
This relates to a semiconductor device with a spring terminal that is attached and connected to the B and C terminals of the C terminal. An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 3 to 6, the positive characteristic thermistor 8
The conductive terminal board, which is housed in the insulating cases 9 and 10, is made up of three units, each with a different shape, but each is divided into a spring terminal part, a terminal part, and an electrode plate part. Each function is produced in the same shape, and then these are welded together. That is, 5 and 5' are a pair of spring terminals connected to the motor terminals, and these spring terminals 5 and 5' are respectively connected to the motor terminals B and C.
They are formed in the same shape, having fitting parts 5a, 5a' that fit with the parts, and joining parts 5b, 5b' with other conductive parts formed by bending extensions of these fitting parts.

Reference numerals 6 and 6' designate a pair of external wiring connection terminals, including tab parts 6a and 6a' for coupling with receptacles of external wiring cords, and joint parts 6b and 6b' where these tab parts are extended and are connected to other conductive parts. They are formed in the same shape with positioning bent portions 6c and 6c'. Reference numerals 7 and 7' denote a pair of electrode plates that sandwich the positive temperature coefficient thermistor element 8, and these electrode plates 7 and 7' have elastic parts 7 that sandwich the positive temperature coefficient thermistor element 8.
a, 7a' and joint parts 7b, 7b' with other conductive parts, which are extensions of a part of the elastic parts, and are formed in the same shape. 7c, 7c' are openings provided in the elastic parts 7a, 7a'.

Reference numeral 9 denotes an insulating case, which has grooves 9a and 9 into which the spring terminals 5, 5', terminals 6, 6', and electrode plates 7, 7' integrated, respectively, can be inserted and positioned.
b, 9c, an accommodating portion 9d for accommodating the PTC thermistor element 8, and protrusions 9e, 9f for fitting and fixing with the insulating cover 10. Here, one side 5 of the spring terminal and one side 6 of the terminal for external wiring connection are joined and fixed by spot welding at their respective joints 5b and 6b to constitute the third conductive terminal plate 13, and this third conductive The terminal board 13 is housed in the groove 9a of the insulating case. In addition, spring terminals 5, 5'
The remaining one 5' and one of the electrode plates 7 are bonded and fixed at their respective joints 5b' and 7b to form a second conductive terminal plate 12, and this second conductive terminal plate 12 is insulated. It is stored in the groove 9b of the case. Furthermore, the remaining terminal 6' for external wiring connection 6, 6' and the remaining electrode plate 7, 7' are fixed by spot welding at their respective joints 6'b, 7'b. A first conductive terminal plate 11 is constructed, and this first conductive terminal plate 11 is housed in a groove 9c of an insulating case. After being pre-assembled in this way, the elastic portions 7a, 7'a of the electrode plates 7, 7' are brought into opposing contact with each electrode surface of the positive temperature coefficient thermistor element 8, and held therebetween. The external wiring connection terminal 6' of the conductive terminal plate 11 and the external wiring connection terminal 6 of the third conductive terminal plate 13, and the spring terminal 5' of the second conductive terminal plate 12 and the third conductive terminal plate 13. The spring terminals 5 are housed in grooves 9a, 9b, and 9c of the insulating case so as to face each other. 10 is an insulating cover and the insulating case 9
The spring terminals 5, 5', the terminals 6, 6', the electrode plates 7, 7',
A positive temperature coefficient thermistor element 8 is housed inside and fixed. Therefore, when attaching the positive temperature coefficient thermistor device with a spring terminal configured in this manner to a motor terminal, the fitting portions 5a and 5a of the spring terminals 5 and 5' should be
5a' should be fitted to motor terminals B and C.

As shown above, three conductive terminal plates 1 with different shapes
1, 12, 13, spring terminals 5, 5', terminals 6, 6', electrode plates 7,
7' for each function, each pair can be produced in the same shape, and finally they are integrated by spot welding, making it easy to create three conductive terminal plates 11, 12, and 13 with different shapes. It can be formed into

FIG. 7 shows another embodiment of the present invention, in which a terminal 6'' having the same shape as the terminals 6 and 6' is connected and fixed to the spring terminal 5', so that it can be easily applied to a capacitor run motor without increasing the number of parts. may be applicable.

In this way, the present invention comprises three conductive terminal boards housed in an insulating case together with a semiconductor element, a pair of terminals for connecting external wiring, a pair of spring terminals for connecting to a motor terminal, etc., and a pair of terminals for holding the semiconductor element. Since the electrode plates are divided into electrode plates, each pair is formed in the same shape, and these are joined together in a predetermined combination, it is much easier to use than forming complex-shaped conductive terminal plates in one piece. It is possible to easily produce a terminal board with simple and stable performance, and it is possible to make each component part the same shape so that parts can be shared, reducing the number of parts, which is very advantageous from an economic point of view.

Note that the drawings merely show one embodiment of the positive temperature coefficient thermistor device with a spring terminal of the present invention, and are not limited to this in any way. The terminal extraction method is completely arbitrary.

[Brief explanation of the drawing]

Fig. 1 is an equivalent circuit diagram for starting a motor, Fig. 2 is a front view showing the position of motor terminals, and Figs. 3 to 6 show an embodiment of a positive temperature coefficient thermistor device with a spring terminal according to the present invention. 3 is an exploded perspective view, FIG. 4 is a cross-sectional view, FIG. 5 is a terminal arrangement diagram, and FIG. 6 is an external view. Further, FIG. 7 is a terminal arrangement and wiring diagram of an embodiment in which the present invention is applied to a capacitor run motor. 5, 5'... Spring terminal plate, 6, 6'... Terminal, 7, 7'... Electrode plate, 8... Semiconductor element,
9, 10... Insulation case, 11, 12, 13...
Conductive terminal board.

Claims (1)

[Claims] 1. An insulating case having a housing portion for housing a positive temperature coefficient thermistor element, and a first conductive terminal plate having an external wiring connection terminal bonded and fixed to one end of an electrode plate having an elastic portion for holding the thermistor element. , a second conductive terminal plate having a spring terminal to be fitted with a motor terminal bonded to one end of an electrode plate having an elastic part disposed opposite to the elastic part of the electrode plate; and a terminal for connecting external wiring. a third conductive terminal plate having a spring terminal bonded and fixed to one end thereof to be fitted with a motor terminal, the positive temperature coefficient thermistor element being sandwiched between the electrode plates of the first and second conductive terminal plates; A terminal for external wiring connection of the first conductive terminal plate, a terminal for external wiring connection of the third conductive terminal plate, a spring terminal of the second conductive terminal plate, and a spring terminal of the third conductive terminal plate. The first, second, and third conductive terminal boards are installed in grooves provided in the insulating case so that they face each other, and the opposing faces constituting the first, second, and third conductive terminal boards are A semiconductor device with a spring terminal, in which an electrode plate, a spring terminal, and a terminal for connecting external wiring are all configured in the same shape.