JPH0538772U - Electronic component terminal mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In an electronic component in which a plurality of terminals 20 are attached to two opposite side surfaces of the circuit board 10, the terminals 20 to the circuit board 10
To facilitate installation and improve productivity. [Structure] A semicircular recess 12 having a conductor is formed on two side surfaces of a circuit board 10, and a flat portion 21 and a tongue piece 22 cut and raised from the flat portion 21 are formed at the tip of the terminal 20. Provided and recessed 12
One end of each is placed on the flat surface portion 21 of the terminal 20, the tongue piece 22 is positioned in the semicircular recess 12, and each terminal 20 is attached to the circuit board 10. [Effect] The terminal 20 can be mounted while positioning it on the circuit board 10 simply by mounting the circuit board 10 on one lead frame 25 from one direction, which simplifies the manufacturing process and facilitates assembly by an automatic machine. become.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a terminal mounting structure for an electronic component in which terminals are mounted on two opposite side surfaces of a circuit board.

[0002]

[Prior art and its problems]

 As a conventional electronic component, as shown in FIG. 1, the tip of a terminal 1 is formed into a bifurcated shape, and the terminal 1 is mounted so that the circuit board 2 is sandwiched between the bifurcated portions. However, such a structure has a drawback that the work of mounting the terminals 1 on both sides of the circuit board 2 is troublesome. That is, in order to attach the terminal 1 to the circuit board 2, the two lead frames 3 in which the terminals 1 are connected as shown in FIG. Must-have. Therefore, the assembly process is complicated and the productivity is reduced.

[0003]

[The purpose of the device]

 An object of the present invention is to improve productivity by facilitating attachment of terminals to a circuit board in an electronic component in which a plurality of terminals are attached to two opposite side surfaces of the circuit board.

[0004]

[Means for Solving the Problems]

 In the terminal mounting structure of the present invention, a substantially semicircular recess having a conductor attached is formed on the two side surfaces of the circuit board, and a flat portion is formed at the tip of each terminal and is cut and raised substantially vertically from the flat portion. The present invention is characterized in that a tongue is provided, one end of the recess is placed on the flat surface of the terminal, the tongue is positioned in the recess, and each terminal is attached to the circuit board.

[0005]

【Example】

 FIG. 2 shows an embodiment of an electronic component to which the terminal mounting structure according to the present invention is applied. Actually, a conductor pattern is provided on the surface of the circuit board 10 or various circuit elements are mounted on the circuit board 10. However, these are omitted in the figure and only the main part is shown. It is shown. As is clear from FIG. 3, the two opposite side surfaces of the circuit board 10 are notched in a semicircular shape, and a semicircular concave portion is formed by applying conductors 11 from the inside to the front and back surfaces of the circuit board 10. 12 has been formed. Such a circuit board 10 can be easily obtained by cutting the center of the through hole 16 from one mother board 15 and cutting out a plurality of circuit boards 10 as shown in FIG. The dashed line in FIG. 4 indicates the cut portion. On the other hand, as shown in FIG. 5, a flat portion 21 and a tongue piece 22 vertically cut from the flat portion 21 are provided at the tip of the terminal 20. The circuit board 10 is placed on the terminal 20 with the tongue piece 22 of the terminal 20 being inserted into the depression 12 and the conductor 11 at one end of the depression 12 being placed on the flat portion 21 of the terminal 20. And the terminal 20 is soldered to the conductor 11 of the recess 12. The circuit board 10 on which circuit elements not shown are mounted is further molded with the exterior resin 30, and the terminals 20 are bent to complete the electronic component.

The terminal 20 is attached to the circuit board 10 as follows. First, there is prepared one lead frame 25 as shown in FIG. 6 in which a large number of terminals 20 each having a flat portion 21 and a tongue piece 22 which is vertically cut and raised are formed facing each other. Next, while inserting the tongue piece 22 into the recess 12, the circuit board 10 is lowered from above and placed on the terminal 20. Then, the conductor 11 and the terminal 20 in the recess 12 may be soldered. After this, the state is as shown in FIG. 2 by molding with the exterior resin 30 and then separating from the lead frame 25. The circuit board 10 may have a structure in which a part of the conductor 11 on the surface of the circuit board which is not joined to the flat portion 21 of the terminal is removed as shown in FIG.

[0007]

[Effect of the device]

 According to the present invention, the terminals can be mounted while positioning the terminals on the circuit board only by mounting the circuit board on one lead frame from one direction. Therefore, the manufacturing process is simplified and assembly by an automatic machine is easy. In addition, the circuit board can be easily manufactured by cutting the center of the through hole, so mass productivity is good.

[0008]

[Brief description of drawings]

FIG. 1 is a perspective view showing a conventional terminal mounting structure.

FIG. 2 is a perspective view showing an embodiment of the terminal mounting structure of the present invention.

FIG. 3 is a perspective view of a part of the circuit board according to the embodiment.

FIG. 4 is a plan view showing a method for manufacturing the same circuit board.

FIG. 5 is an enlarged perspective view of the tip of the terminal.

FIG. 6 is a perspective view of the assembly process.

FIG. 7 is a partial perspective view showing another embodiment of the circuit board.

[Explanation of symbols]

 10 Circuit Board 11 Conductor 12 Recess 20 Terminal 21 Plane 22 Tongue

Claims (1)

[Scope of utility model registration request] 1. An electronic component having a plurality of terminals attached to two opposite side surfaces of a circuit board, wherein substantially semicircular recesses are formed on the two side surfaces of the circuit board, and at least one of the circuit board is provided from the surface of the recess. A conductor is applied over the surface, a flat portion and a tongue piece that is cut and raised substantially vertically from the flat portion are provided at the tip of each terminal, and one end side of the recess is placed on the flat portion of the terminal. A terminal mounting structure for an electronic component, characterized in that the tongue pieces are located in the recesses and the respective terminals are mounted on the circuit board.