CN219475826U

CN219475826U - Ultrasonic sensor structure aiming at resonance influence

Info

Publication number: CN219475826U
Application number: CN202223426624.9U
Authority: CN
Inventors: 李铭; 欧贵彬
Original assignee: Chengdu Model Electronic Technology Co ltd
Current assignee: Chengdu Model Electronic Technology Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-08-04
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to the technical field of sensor structures, in particular to an ultrasonic sensor structure aiming at resonance influence, which comprises an outer shell and an FPC (flexible printed circuit) board, wherein the FPC board is arranged in the outer shell, a contact pin is arranged on the FPC board, and a plurality of through holes are formed in the periphery of the contact pin, which is positioned by the FPC board. The structure of the utility model mainly comprises an outer shell and an FPC circuit board, wherein the FPC circuit board is arranged in the outer shell, a contact pin is arranged on the FPC circuit board, a plurality of through holes are formed in the periphery of the contact pin, a plurality of small holes are additionally formed in the periphery of the contact pin on the FPC circuit board, the performance and the use of the FPC circuit board are not affected, and glue is applied to stitch welding points of the negative electrode surface, so that the resonance phenomenon of a product can be further reduced.

Description

Ultrasonic sensor structure aiming at resonance influence

Technical Field

The utility model relates to the technical field of sensor structures, in particular to an ultrasonic sensor structure aiming at resonance influence.

Background

Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals (typically electrical signals). Ultrasonic waves are mechanical waves with vibration frequencies higher than 20 kHz. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, good directivity, capability of being used as rays to directionally propagate, and the like. The penetration of ultrasound into liquids, solids is great, especially in solids that are opaque to sunlight. The ultrasonic waves can be obviously reflected to form a reflected echo when encountering impurities or interfaces, and the Doppler effect can be generated when the ultrasonic waves collide with a living body. Ultrasonic sensors are widely used in industry, national defense, biomedical and other fields.

At present, the ultrasonic sensor is characterized in that the contact pin is assembled on the PCB, the PCB is installed in the silica gel sleeve, then the PCB with the silica gel sleeve is assembled at the step position of the shell, resonance generated by the assembly of the PCB and the shell is reduced through the silica gel sleeve, but resonance phenomenon exists in the existing structural product.

Disclosure of Invention

The utility model aims to provide an ultrasonic sensor structure aiming at resonance influence, so as to solve the problem that resonance phenomenon exists in the prior art.

The embodiment of the utility model is realized by the following technical scheme:

the utility model provides an ultrasonic sensor structure to resonance influence, includes shell body and FPC circuit board, the FPC circuit board set up in inside the shell body, be provided with the contact pin on the FPC circuit board, the FPC circuit board is located a plurality of through-holes have been seted up around the contact pin.

In an embodiment of the present utility model, a piezoelectric ceramic plate is disposed at the bottom of the outer casing, and the piezoelectric ceramic plate is used for being connected with the positive electrode of the FPC circuit board.

In an embodiment of the utility model, the outer shell is filled with sound absorbing material.

In an embodiment of the utility model, a connection part is arranged at the bottom of the pin, the FPC board is provided with a through groove, and the pin is adhered in the through groove through the connection part.

In an embodiment of the utility model, an adhesive is disposed around the connection portion.

In an embodiment of the present utility model, the through hole is arranged in two semi-circles, and the two semi-circles are symmetrically arranged with the pin as a symmetry axis.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

the structure of the utility model mainly comprises an outer shell and an FPC circuit board, wherein the FPC circuit board is arranged in the outer shell, a contact pin is arranged on the FPC circuit board, a plurality of through holes are formed in the periphery of the contact pin, a plurality of small holes are additionally formed in the periphery of the contact pin on the FPC circuit board, the performance and the use of the FPC circuit board are not affected, and glue is applied to stitch welding points of the negative electrode surface, so that the resonance phenomenon of a product can be further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the outer shell of the present utility model;

FIG. 3 is a schematic view of a pin according to the present utility model;

icon: the Flexible Printed Circuit (FPC) board, the 2-contact pin, the 3-through hole, the 4-outer shell, the 5-piezoelectric ceramic piece and the 6-connecting part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Referring to fig. 1-3, the ultrasonic sensor structure for resonance influence provided by the utility model mainly comprises an outer shell 4 and an FPC circuit board 1, wherein the outer shell 4 adopts a conventional cylindrical shell-shaped structure, one end of the outer shell is open and hollow, the FPC circuit board 1 is arranged in the outer shell 4, symmetrical bosses are arranged in the shell and used for supporting the installation of the FPC circuit board 1, and a piezoelectric ceramic sheet 5 is arranged between the two bosses and positioned at the bottom of the outer shell 4 and connected with the positive electrode of the FPC circuit board 1.

Be provided with contact pin 2 on FPC circuit board 1, a plurality of through-holes 3 have been seted up to FPC circuit board 1 be located around contact pin 2, and through-hole 3 is two semicircular settings, and two semicircle are set up with contact pin 2 as symmetry axis symmetry.

Specifically, 2 pins 2 are inserted into holes on the FPC circuit board 1 by adopting automatic equipment and tin is plated, and glue is plated at stitch welding points of the negative electrode surface of the FPC circuit board 1 by adopting automatic equipment; dispensing glue on the steps of the shell by adopting automatic equipment, placing the prepared negative electrode surface of the FPC circuit board 1 at the dispensing position for bonding, and finally welding the positive electrode wire on the FPC circuit board 1 on the piezoelectric ceramic plate 5 by adopting automatic equipment and filling sound absorbing materials; the whole process flow is operated by adopting automatic equipment, so that the product efficiency is improved by 90 percent compared with the prior art; 3 welding/riveting points are reduced, so that the reliability of the product is improved by 50%; the product percent of pass is improved by 30%; the material cost is reduced by about 30% compared with the existing products, 10 persons are reduced manually, and meanwhile, the production period of a single product is shortened by about 8 hours.

Next, the inside of the outer case 4 is filled with a sound absorbing material. The bottom of contact pin 2 is provided with connecting portion 6, and FPC circuit board 1 is provided with logical groove, and contact pin 2 passes through connecting portion 6 joint in logical inslot.

In order to make the connection firm, glue is provided around the connection 6.

the structure of the utility model mainly comprises an outer shell 4 and an FPC circuit board 1, wherein the FPC circuit board 1 is arranged in the outer shell 4, a contact pin 2 is arranged on the FPC circuit board 1, a plurality of through holes 3 are formed in the periphery of the contact pin 2 of the FPC circuit board 1, a plurality of small holes are additionally formed in the periphery of the contact pin 2 of the FPC circuit board 1, the performance and the use of the FPC circuit board 1 are not affected, and glue is applied to a stitch welding point of a cathode surface.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an ultrasonic sensor structure to resonance influence, includes shell body (4) and FPC circuit board (1), its characterized in that, FPC circuit board (1) set up in inside shell body (4), be provided with contact pin (2) on FPC circuit board (1), FPC circuit board (1) are located a plurality of through-holes (3) have been seted up around contact pin (2).

2. An ultrasonic sensor structure for resonance influence according to claim 1, characterized in that the bottom of the outer housing (4) is provided with a piezo-ceramic sheet (5), the piezo-ceramic sheet (5) being for positive connection with the FPC circuit board (1).

3. An ultrasonic sensor structure for resonance effects according to claim 2, characterized in that the outer housing (4) is internally filled with a sound absorbing material.

4. The ultrasonic sensor structure for resonance influence according to claim 2, wherein a connecting portion (6) is provided at the bottom of the pin (2), the FPC board (1) is provided with a through groove, and the pin (2) is adhered in the through groove through the connecting portion (6).

5. An ultrasonic sensor structure for resonance effects according to claim 4, characterized in that the connection (6) is provided with glue around it.

6. An ultrasonic sensor structure for resonance effects according to any one of claims 1-5, characterized in that said through hole (3) is arranged in two semi-circles, both of which are symmetrically arranged with respect to the axis of symmetry of the pin (2).