阅读说明：本技术 压电无源蜂鸣器及其组装方法 (Piezoelectric passive buzzer and assembling method thereof ) 是由 严中田 廖伟南 于 2019-10-12 设计创作，主要内容包括：本发明涉及蜂鸣器,尤其是压电无源蜂鸣器及其组装方法；它包括插针、底盖、蜂鸣片和外壳,所述底盖内置绝缘板,所述底盖和外壳配套设置,所述外壳内设置有凸环,圆形的蜂鸣片刚好放置在凸环之上,底盖底部设置有喇叭口,喇叭口的下部边缘刚好抵住蜂鸣片的外周,使得蜂鸣片固定在底盖和外壳之间,所述底盖设置有两个针口,且针口配合绝缘板的接线孔位置设置,两个插针分别插入针口处,并且插针的尖端接触蜂鸣片；本发明没有导线连接PCB和蜂鸣片的过程,大大提升了组装速度。(The invention relates to a buzzer, in particular to a piezoelectric passive buzzer and an assembling method thereof; the novel anti-theft alarm comprises contact pins, a bottom cover, a buzzer and a shell, wherein an insulating plate is arranged in the bottom cover, the bottom cover and the shell are arranged in a matched mode, a convex ring is arranged in the shell, the round buzzer is just placed on the convex ring, a horn mouth is formed in the bottom of the bottom cover, the edge of the lower portion of the horn mouth just props against the periphery of the buzzer, the buzzer is fixed between the bottom cover and the shell, the bottom cover is provided with two needle mouths, the needle mouths are matched with wiring holes of the insulating plate in position, the two contact pins are respectively inserted into the needle mouths, and the tip ends of; the invention has no process of connecting the PCB and the buzzer by a lead, thereby greatly improving the assembly speed.)

1. Piezoelectric passive buzzer, its characterized in that: it includes contact pin, bottom, buzzing piece and shell, the built-in insulation board of bottom, bottom and shell are supporting to be set up, are convenient for both to fold the fastening fast, be provided with the bulge loop in the shell, circular shape buzzing piece just places on the bulge loop, and the bottom is provided with the horn mouth, and the lower part edge of horn mouth just supports the periphery of buzzing piece for buzzing piece fixes between bottom and shell, the bottom is provided with two needle mouths, and the wiring hole position of needle mouth cooperation insulation board sets up, and needle mouth department is inserted respectively to two contact pins to the most advanced contact buzzing piece of contact pin, the shell bottom is provided with the phonate hole.

2. A piezoelectric passive buzzer according to claim 1, wherein: the inner wall of the shell is provided with an annular groove, the bottom cover is provided with a flange in a matching mode with the annular groove, and the flange is clamped into the annular groove after the shell and the bottom cover are folded.

3. A piezoelectric passive buzzer according to claim 2, wherein: the stitch of the contact pin is provided with a threading hole.

4. A piezoelectric passive buzzer according to claim 3, wherein: the needle mouth inner wall is provided with the internal thread, the contact pin middle part is provided with the fixed part, the fixed part periphery sets up the external screw thread, and interior external screw thread cooperation sets up.

5. A piezoelectric passive buzzer according to claim 3, wherein: the needle opening is in interference fit with the fixing part of the contact pin.

6. The assembling method of the piezoelectric passive buzzer is characterized in that: it comprises the following steps:

step one, inserting or screwing a first contact pin into a bottom cover;

inserting or screwing a second contact pin into the bottom cover;

step three, bending the pins of the two contact pins, and meanwhile, placing the buzzer piece at the convex ring of the shell;

pressing the bottom cover into the opening of the shell, so that the flange of the bottom cover is clamped into the ring groove of the shell;

and step five, performing power-on test on the assembled product.

Technical Field

The invention relates to a buzzer, in particular to a piezoelectric passive buzzer and an assembling method thereof.

Background

Along with the progress of science and technology, the structure of the buzzer is more and more concise and more suitable for quick assembly. For example, chinese patent discloses a buzzer structure, patent No. 201820872590.0, in which: the plastic shell comprises a plastic shell, a buzzing piece, a lead, a pcb, pins, a buckling groove, shell notches, salient points and a plastic reverse buckle, wherein the three shell notches are distributed at equal intervals; the plastic shell gap is provided with a plastic back-off; one side of the pcb is provided with two pins, and the other side of the pcb is provided with two leads connected with the buzzer; three salient points are distributed on the outer side of the pcb at equal intervals. Novel bee calling organ stitch is through novel buckle structural design production, and the production man-hour that significantly reduces improves production efficiency, and at the customer end significantly reduced board phenomenon that falls.

Practice over a year shows that the structure that the PCB is connected with the buzzer through the lead consumes more time in quick assembly, and further improvement space is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a piezoelectric passive buzzer capable of being assembled quickly and an assembling method thereof.

The technical scheme of the invention is as follows:

piezoelectric passive buzzer, its characterized in that: it includes contact pin, bottom, buzzing piece and shell, the built-in insulation board of bottom, bottom and shell are supporting to be set up, are convenient for both to fold the fastening fast, be provided with the bulge loop in the shell, circular shape buzzing piece just places on the bulge loop, and the bottom is provided with the horn mouth, and the lower part edge of horn mouth just supports the periphery of buzzing piece for buzzing piece fixes between bottom and shell, the bottom is provided with two needle mouths, and the wiring hole position of needle mouth cooperation insulation board sets up, and needle mouth department is inserted respectively to two contact pins to the most advanced contact buzzing piece of contact pin (one of them contact pin connection buzzing piece outer lane (brass piece), another contact pin connection buzzing piece inner circle (piezoceramics piece)), the shell bottom is provided with the phonate hole for buzz.

Further, the inner wall of the shell is provided with an annular groove, the bottom cover is provided with a flange in a matched mode with the annular groove, and the flange is clamped into the annular groove after the shell and the bottom cover are folded, so that the shell and the bottom cover are convenient to assemble and are not easy to separate after being assembled.

Furthermore, the stitch of the contact pin is provided with a threading hole, so that the contact pin can be conveniently connected with an external wire.

In one embodiment, the inner wall of the needle opening is provided with internal threads, the middle part of the contact pin is provided with a fixing part, the periphery of the fixing part is provided with external threads, and the internal threads and the external threads are matched so that the contact pin can be fixed on the bottom cover through screw connection.

In one embodiment, the fixing part of the needle opening and the contact pin is in interference fit, and the contact pin can be quickly inserted and fixed on the bottom cover.

The assembling method of the piezoelectric passive buzzer is characterized in that: it comprises the following steps:

step one, inserting or screwing a first contact pin into a bottom cover;

inserting or screwing a second contact pin into the bottom cover;

step three, bending the pins of the two contact pins, and meanwhile, placing the buzzer piece at the convex ring of the shell;

pressing the bottom cover into the opening of the shell, so that the flange of the bottom cover is clamped into the ring groove of the shell;

and step five, performing power-on test on the assembled product.

Packaging the product passing the test; and (4) carrying out quality inspection on the packaged products, warehousing the qualified products for selling and shipping, and reworking the unqualified products.

Use reminding: obviously, the product of the invention does not contain a PCB, namely an oscillating circuit for controlling the buzzer is lacked, so that the product cannot be directly electrified to sound, but the pins of the two contact pins can be externally connected with an audio output end to sound.

The invention has the beneficial effects that: the invention has no process of connecting the PCB and the buzzer piece by a lead, greatly improves the assembly speed, and directly uses the contact pin as an electric connection conductor for connecting the PCB and the buzzer piece.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a process flow diagram of the present invention.

In the figure, 1, a pin; 2. a bottom cover; 3. a buzzer; 4. a housing; 11. a stitch; 12. a fixed part; 13. a tip; 41. a ring groove; 42. a convex ring; 43. a sound emitting hole.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings: