JPH0455355Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a piezoelectric buzzer, and more specifically to a structure for attaching a terminal to a case.

<Prior art> As shown in FIG. 5, a piezoelectric buzzer has a sounding body 3 housed inside a synthetic resin case 2 with a sound emitting hole 1 provided in the center of the top wall, and a terminal provided on the outer periphery of the case 2. A terminal 5 formed using a metal plate is press-fitted into the insertion hole 4 and attached, and a connecting piece 6 provided on the terminal 5 is connected to an electrode 7 of the sounding body 3 by soldering.

Conventionally, the terminal 5 used in the piezoelectric buzzer as described above has a terminal piece 9 in the center of one end of the plate part 8 inserted into the insertion hole 4 and a terminal piece 9 on the side thereof, as shown in FIGS. 3 to 5. A connecting connection 6 that is bent toward one side is provided adjacently, cut and raised pieces 10 and 11 for engaging the insertion hole 4 are bent and formed at the center and both side edges of the plate portion 8, and further on both side edges of the plate portion 8. It has a structure in which stoppers 12, 12 for limiting the insertion amount are provided, and the plate portion 8 is press-fitted into the insertion hole 4 provided in the case 2 to a position where the stopper 12 comes into contact with the end surface of the case 2. 6 is connected to the electrode 7 of the sounding body 3 by soldering.

By the way, the terminal piece 9 of the terminal 5 attached to the case 2
There are times when external forces are applied to the inside and outside of the case 2, as shown by arrows A and B in FIG.
Since the terminal piece 9 and the connecting piece 6 are close to each other, the external force of the terminal piece 9 is directly transmitted to the connecting piece 6.
There is a problem in that a separating force is applied to the solder connection point to the sounding body 3, causing the solder connection point to peel off and a connection failure to occur between the connection piece 6 and the electrode 7.

<Purpose of the invention> This invention was made in order to solve the above-mentioned problems. It absorbs the external force of the terminal piece in the direction of the inside and outside of the case and prevents it from being transmitted to the connecting piece. An object of the present invention is to provide a piezoelectric buzzer that can prevent solder from peeling off on the body.

<Means for Solving the Problems> In order to solve the above problems, this invention has a structure in which a slit is provided between the terminal piece and the connecting piece in the plate portion of the terminal.

<Function> When the insertion plate portion of the terminal is press-fitted into the insertion hole provided in the case, the tip edge of the engaging cut-and-raised piece engages with the inner surface of the insertion hole in the pulling direction, and the terminal is fixed.

Even if external pressure from the inside and outside of the case acts on the terminal piece, only the terminal piece will bend due to the presence of the slit.
Since no external pressure is transmitted to the connection piece, it is possible to prevent the solder connection portion of the connection piece from coming off from the sounding body.

<Example> Hereinafter, an example of this invention will be described based on FIGS. 1 and 2 of the accompanying drawings.

In addition, in this figure, the same parts as in FIGS. 3 to 5 are given the same reference numerals, and the description thereof will be replaced.

As shown in FIG. 1, the terminal 5 that is inserted into the insertion hole 4 of the case 2 is attached to one end of the insertion plate portion 8.
A terminal piece 9 and a connecting piece 6 protruding to one side next to the terminal piece 9
is protruded, and there are 1 cutting and raised pieces for hanging in the middle on both sides of the center part.
0 and 11 are provided, and stoppers 12 and 12 are further provided at the protruding side ends of the terminal piece 9 on both sides.

A slit 21 is provided in the plate portion 8 between the terminal piece 9 and the connecting piece 6, and the presence of the slit 21 prevents the terminal piece 9 from bending and being transmitted to the connecting piece 6 when an external force is applied.

Insert the terminal 5 into the insertion hole 4 of the case 2,
When the connecting piece 6 is soldered and connected to the electrode 7 of the sounding body 3 and external pressure is applied to the terminal piece 9 in the case inner and outer directions A and B shown in FIG. 5, the presence of the slit 21 causes the terminal piece to 9, the terminal piece 9, and the stopper 12 are bent, so that external pressure is not transmitted to the connecting piece 6, and peeling of the soldered joint between the connecting piece 6 and the sounding body 3 can be prevented.

<Effects> As described above, according to this invention, a slit is provided between the terminal piece and the connecting piece in the plate part of the terminal to be installed in the insertion hole of the case, so that the external pressure applied to the terminal piece in the inside and outside directions of the case is absorbed by the slit. Due to the presence of the bending force, it is possible to prevent the bending of the terminal piece from being transmitted to the connecting piece, and no separation force is applied to the solder connection between the terminal connection part and the sounding body, thereby preventing the occurrence of solder peeling. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a front view of the terminal used in the piezoelectric buzzer according to this invention, Fig. 2 is an exploded perspective view of the same as above and the case, Fig. 3 is a front view showing the conventional terminal, Fig. 4 is a plan view of the same as above, FIG. 5 is a longitudinal sectional view showing the main parts of the piezoelectric buzzer. 1...Sound emitting hole, 2...Case, 3...Sounding body,
4...Insertion hole, 5...Terminal, 6...Connection piece, 7...
... Electrode, 8 ... Plate part, 9 ... Terminal piece, 21
...Slit.

Claims (1)

[Scope of utility model registration request] A connection in which a sounding body is installed in a case that has a sound emitting hole in the center and a terminal insertion hole on the outer periphery, and a terminal piece and a sounding body are connected to a terminal that is fixed by press-fitting a plate part into the insertion hole in a manner that prevents it from coming out. What is claimed is: 1. A piezoelectric buzzer having a piezoelectric buzzer, characterized in that a slit is provided between the terminal piece and the connecting piece in the plate portion of the terminal.