JPH0511342U - Substrates for electrical parts made by press-fitting terminal members - Google Patents

Abstract

(57) [Abstract] [Purpose] While applying ultrasonic vibration to the terminal member, the terminal member is press-fitted into the opening of the synthetic resin substrate and welded at the same time to prevent the formation of gaps and to ensure waterproofness. And a substrate for electric parts, which is manufactured by welding terminal members that can be manufactured extremely easily and at low cost. [Structure] An opening through which a terminal member is inserted is opened in a synthetic resin substrate, and a protrusion is formed at a predetermined position of the terminal member so that the width of the terminal member is larger than the width of the opening. A substrate for electric parts, in which the terminal member is welded to the substrate by press-fitting the terminal member into the opening of the substrate such that the tip portion of the terminal member protrudes through while applying ultrasonic waves to the terminal member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a novel electric component substrate obtained by press-fitting and welding a terminal member to a synthetic resin substrate using ultrasonic waves.

[0002]

[Prior Art]

 Conventionally, there are many electric components having a structure in which a terminal member is mounted on a board, such as a small general-purpose relay.As a means for mounting the terminal member on this board, the terminal member is loosely inserted into the board. A method is known in which a large opening is formed in advance, the terminal member is press-fitted into this opening using a press, and then caulked and fixed, or the substrate and the terminal member are integrally molded. Has been.

In the above method, a gap is inevitably present at the contact portion with the substrate, and there is a drawback in that the waterproof property is poor. In order to make it waterproof, it was necessary to perform the troublesome work of closing the gap with a bond or the like.

In addition, although the method (1) is completely waterproof, it has a drawback that the manufacturing cost becomes high.

[0005]

[Problems to be solved by the device]

 The present invention has been devised to eliminate the above-mentioned drawbacks of the prior art. By applying ultrasonic vibration to the terminal member and press-fitting the terminal member into the opening of the substrate and simultaneously welding, Since the contact part between the board and the terminal member is welded, there is no gap, the waterproof property is perfect, and the terminal member that can be manufactured extremely easily and at low cost is welded. The purpose is to provide a substrate for electric parts.

[0006]

Means for Solving the Problems In order to solve the above problems, the present invention is to open an opening through which a terminal member is inserted in a synthetic resin substrate, and place the opening at a predetermined position of the terminal member more than the width of the opening. Also, by forming a protrusion so that the width of the terminal member becomes large, and applying ultrasonic vibration to the terminal member, the terminal member is press-fitted into the opening of the substrate so as to protrude through the opening. A terminal member was welded to the substrate to prepare a substrate for electric parts.

The electric parts to which the present invention is applied include all those having a structure in which terminals are mounted on a substrate. Specifically, for example, there are a relay, a regulator, a solenoid, and the like. .

[0008]

[Action]

 Since the terminal member (6) is integrally welded and fixed to the synthetic resin substrate (4) in the middle of the process, the opening (22) of the synthetic resin substrate (4) is inserted into the terminal member (6). Even if the tip portion protrudes through, the waterproof property is surely maintained.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings. In this embodiment, a case of a small general-purpose relay as an electric component will be described.

In the figure, (2) is a small general-purpose relay to which the present invention is applied. The relay (2) has a synthetic resin substrate (base plate) (4). (6a to 6e) are a plurality of terminal members attached to the substrate (4), the tip end portion of which projects toward the lower surface side of the substrate (4) and the base end portion of which is the upper surface side of the substrate (4). Is located in.

The base end of the terminal member (6a) is an upper point (8), the base end of the terminal member (6b) is a lower point (10), and the base end of the terminal member (6c) is a moving point. At the point (12), the base end of the terminal member (6d) is connected to one end of the coil (14), and the base end of the terminal member (6e) is connected to the other end of the coil (14). ing.

When the coil (14) is excited, the moving point (12) moves and the contact between the upper point (8) and the lower point (10) is interrupted.

(16) is a mounting frame for the coil (14), and the mounting frame (16) is fixed to a mounting plate (20) fitted in the mounting groove (18). Incidentally, (C) is a cover mounted on the synthetic resin substrate (4).

Therefore, the synthetic resin substrate (4) is perforated with an opening (22) through which the terminal member (6) (the reference numeral (6) is simply used when collectively referring to the terminal member). Moreover, a protrusion (25) having an opening (22) or an insertion groove (24) through which the terminal member (6) is inserted is provided.

On the other hand, when the terminal member (6) is fixed at a predetermined position, that is, when the terminal member (6) is fixed to the synthetic resin substrate (4), the terminal member (6) is press-fitted into the substrate (4). A protrusion (26) is formed in the portion to be welded so that the width of the terminal member (6) is larger than the width of the opening (22) or the insertion groove (24).

Then, while applying ultrasonic vibration to the terminal member (6), the tip portion of the terminal member (6) protrudes through the opening (22) and the insertion groove (24) of the substrate (4). When it is press-fitted into the terminal member (6), the side wall of the opening (22) and the insertion groove (24) is softened by ultrasonic vibration, and the force of press-fitting is applied to the terminal member (6) at the middle part thereof. It is to be welded to the substrate (4).

The action of the protrusion (26) is removed when the width of the terminal member (6) is widened and the terminal member (6) is loosely inserted into the opening (22) and / or the insertion groove (24). Of course, this is not done, but when the terminal member (6) is press-fitted into the opening (22) and / or the insertion groove (24), it is easy to press-fit and does not fall off after press-fitting and welding. It is necessary to have such an action. Therefore, the shape of the protrusion (26) is preferably wedge-shaped as shown in the drawing, and the number of wedge-shapes is appropriately set according to the thickness of the opening (22) and / or the insertion groove (24). Needless to say to set.

Next, the method of manufacturing the electric component substrate of the present invention will be described more specifically.

6 to 8, (H) is a horn which constitutes a part of the ultrasonic welding machine, and the synthetic resin substrate (4) is provided on the lower surface of the horn (H) as described above. A concave portion (K) is formed corresponding to the tip portion of the terminal member (6) protruding from the terminal member (6), and the terminal member (6) is loosened so that the tip portion of the terminal member (6) faces upward. The inserted substrate (4) is attached to the receiving jig (J) of the ultrasonic welding machine, and the tip portion of the terminal member (6) is lowered to lower the horn (H) so that the recess ( K) to apply ultrasonic vibration to the terminal member (6), and at the same time press the substrate (4) downward through the lower surface of the horn (H 2) to move the terminal member (6). It is press-fitted and welded to the substrate (4).

In addition, in the above-described embodiment, the example in which the present invention is applied to the substrate of the small-sized general-purpose relay has been described. However, the present invention applies to other electric parts that require a structure of inserting and fixing terminals into the substrate, Of course, it can be applied to regulators, solenoids, etc.

[0021]

[Effect of the device]

 As described above, according to the present invention, while applying ultrasonic vibration to the terminal member, the tip end portion of the terminal member is press-fitted into the opening of the synthetic resin substrate so as to project through, and simultaneously fused. Since it is a substrate for electrical parts, since the contact part between the substrate and the terminal member is welded, no gap is created, waterproofness is perfect, and it can be easily manufactured at low cost. It has a practical effect.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing an embodiment of a compact general-purpose relay to which the present invention is applied.

FIG. 2 is a top view with a cover removed in FIG.

FIG. 3 is a bottom view of FIG.

FIG. 4 is a top view of the substrate without a terminal member attached.

FIG. 5 is a schematic view showing an example of a terminal member.

FIG. 6 is a view showing a state in which, in the manufacture of the board according to the present invention, the board in which the horn is raised and the terminal member is loosely inserted is attached to the jig.

FIG. 7 is a view showing a state in which the horn is lowered and the terminal member is press-fitted and welded to the substrate.

FIG. 8 is a view showing a state in which the horn is raised after the terminal member is press-fitted and welded.

[Explanation of symbols]

 4 synthetic resin substrate 6 terminal member 22 opening 24 insertion groove 26 protrusion H horn of ultrasonic welding machine

Claims (1)

[Claims for utility model registration] [Claim 1] An opening through which a terminal member is inserted is opened in a synthetic resin substrate, and the width of the terminal member is smaller than the width of the opening at a predetermined position of the terminal member. Form the protrusion to be large,
A substrate for electric parts, characterized in that the terminal member is welded to the substrate by press-fitting the terminal member into the opening of the substrate such that the tip portion of the terminal member protrudes through while applying ultrasonic vibration to the terminal member. ..