CN115958811B

CN115958811B - A method for preparing a low-cost ultrasonic sensor with a pin

Info

Publication number: CN115958811B
Application number: CN202211685651.XA
Authority: CN
Inventors: 骆军; 周银
Original assignee: Chengdu Huitong West Electronic Co ltd
Current assignee: Chengdu Huitong West Electronic Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2025-09-12
Anticipated expiration: 2042-12-27
Also published as: CN115958811A

Abstract

The invention discloses a preparation method of a low-cost ultrasonic sensor with Pin needles, which comprises two Pin needles, a fixing piece, a flanging ceramic piece, foaming glue and a sealing glue, wherein a notch is formed in the middle of the fixing piece, two mutually independent clamping grooves are formed in the side wall of the notch, the two Pin needles are respectively fixed in the clamping grooves, at least one positioning groove is formed outside the shell, a positioning buckle matched with the positioning groove is arranged on the fixing piece, the fixing piece is inlaid on the upper part of the shell through the matching of the positioning buckle and the positioning groove through injection molding, the flanging ceramic piece is arranged at the bottom of the shell, the two Pin needles are respectively connected with the flanging ceramic piece through a silk thread, the foaming glue is filled in the shell below the notch, and the sealing glue is filled in the notch.

Description

Preparation method of low-cost ultrasonic sensor with Pin needle

Technical Field

The invention relates to the technical field of ultrasonic sensors, in particular to a preparation method of a low-cost ultrasonic sensor with a Pin needle.

Background

With the rising cost of labor and materials, but the price of the ultrasonic sensor does not rise with the rising amplitude of labor and materials, so how to design an ultrasonic sensor capable of using automation and reducing the sensor assembly process for the competitiveness of enterprises is the direction of research of those skilled in the art.

Disclosure of Invention

The invention aims to provide a preparation method of a low-cost ultrasonic sensor with a Pin needle, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

A method for preparing a low-cost ultrasonic sensor with Pin needles comprises the steps of injection molding a preset fixing piece on a shell, configuring a flanging ceramic sheet in the shell, respectively welding wires by two Pin needles, inserting the Pin needles of the welding wires into the fixing piece, welding the other ends of the wires with the flanging ceramic sheet, and filling.

In some embodiments, a notch is formed in the middle of the fixing piece, two mutually independent clamping grooves are formed in the side wall of the notch, and the two pin needles are respectively fixed in the clamping grooves.

In some embodiments, at least one positioning groove is arranged outside the shell, a positioning buckle matched with the positioning groove is arranged on the fixing piece, and the fixing piece is embedded on the upper portion of the shell through injection molding by matching the positioning buckle and the positioning groove.

In some embodiments, the potting comprises filling the housing below the gap with a foam adhesive, and filling the gap with a sealant.

In some embodiments, the pin needle is in a continuous bending shape, and the continuous bending shape comprises a clamping part horizontally arranged at the middle part, and the clamping part is clamped in the clamping groove.

In some embodiments, the outer edge of the fixing piece is the same as the diameter of the shell, the fixing piece and the locating buckle are integrally formed, and the locating buckle and the locating groove are clamped to form a cylindrical whole.

Compared with the prior art, the invention has the following beneficial effects:

through directly moulding plastics the mounting into a whole through the cooperation of location knot and constant head tank earlier, then at installation pin needle for spare part reduces, and assembly step simplifies, provides assembly efficiency, can realize that the full automatization replaces the manual work.

Drawings

FIG. 1 is a part drawing of a low cost Pin needle ultrasonic sensor of an embodiment;

FIG. 2 is a schematic diagram of a low cost Pin needle ultrasonic sensor configuration according to an embodiment;

Fig. 3 is a part drawing of a low cost Pin-in-wire ultrasonic sensor of example 2.

Illustration of:

1-mounting, 2-pin needle, 3-shell, 4-location knot, 5-constant head tank, 6-sealant, 7-foaming glue, 8-silk thread, 9-first boss, 10-second boss.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the preferred embodiments of the present application will be described in more detail with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or indirectly connected through intermediaries, for example, or may be in communication with each other between two elements or in an interaction relationship between the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship of the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or display that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or display.

The following will describe in detail a method for manufacturing a low-cost Pin-equipped ultrasonic sensor according to an embodiment of the present application with reference to fig. 1 to 3. It is noted that the following examples are only for explaining the present application and are not to be construed as limiting the present application.

Example 1:

As shown in figures 1 and 2 of the drawings,

The application provides a preparation method of a low-cost ultrasonic sensor with a Pin needle, which comprises the following steps:

step 1, injection molding a preset fixing piece on a shell;

step 2, configuring a flanging ceramic wafer in the shell;

step 3, welding wires with the two pin needles respectively;

Step 4, inserting a pin needle of the welding wire into the fixing piece;

Step 5, welding the other end of the silk thread with a flanging ceramic wafer;

and 6, filling and sealing.

The preparation method of the low-cost Pin-needle ultrasonic sensor comprises Pin needles 2, fixing pieces 1 and a shell 3, wherein two Pin needles 2 are arranged, a notch is formed in the middle of each fixing piece 1, and the notch can be used for mounting the Pin needles 2, welding wires 8 and glue filling.

The shell 3 is an aluminum shell 3, a positioning groove 5 is arranged outside the shell 3, a positioning buckle 4 matched with the positioning groove 5 is arranged on the fixing piece 1, and the fixing piece 1 is embedded at the upper part of the shell 3 through the matching of the positioning buckle 4 and the positioning groove 5 by injection molding;

The positioning groove 5 is a groove milled on the aluminum shell 3 at a certain distance from the opening end, the positioning buckle 4 is a clamping part arranged on the fixing piece 1, and in order to facilitate the clamping of the positioning buckle 4 into the positioning groove 5, a plane is milled on the part between the positioning groove 5 and the opening end of the aluminum shell 3, so that the fixing piece 1 is convenient to wrap the aluminum shell 3 well after injection molding.

The flanging ceramic plate is arranged at the bottom of the shell 3, the two pin needles 2 are respectively connected with the flanging ceramic plate through threads 8, foaming glue 7 is filled in the shell 3 below the notch, and sealing glue 6 is filled in the notch.

According to the technical scheme, the fixing piece 1 is directly injection-molded on the aluminum shell 3 through injection molding and is fixed through the locating groove 5 on the aluminum shell 3. During assembly, the two pin needles 2 are directly clamped in the clamping grooves of the fixing piece 1, welding of the pin silk yarns 8 is completed, and then glue is filled.

In some embodiments, the clamping groove is arranged above the positioning buckle 4, and the depth of the clamping groove is smaller than the thickness of the fixing piece 1. Because the clamping groove is convenient to open after the thickness of the fixing piece 1. And the injection molding of the clamping groove does not cause damage to the overall structural strength of the fixing piece 1.

Two positioning grooves 5 are formed in the outer side of the shell 3, and the two positioning grooves 5 are symmetrically formed. In order to facilitate the assembly of the pin needle 2. For the convenience of assembly, the pin needle 2 is arranged to be in a continuous bending shape, and the continuous bending shape comprises a clamping part horizontally arranged in the middle part, and is clamped in the clamping groove through the clamping part.

In some embodiments, the outer edge of the fixture 1 has the same diameter as the housing 3. The injection molding is facilitated, and the aluminum housing 3 and the fixing member 1 can be in a cylindrical shape after the injection molding, which facilitates the subsequent assembly. The fixing piece 1 and the positioning buckle 4 are integrally formed, and the positioning buckle 4 and the positioning groove 5 are clamped to form a cylindrical whole.

Example 2:

As shown in fig. 3, in the embodiment of the present application, only the fixing member is different from embodiment 1 in that the first boss 9 is added above the position where the fixing member is provided with the clip groove, so that the clip groove can be provided deeper, and the pin needle can be fixed more stably. A second boss 10 is provided below the fixing member, and is used for fixing the fixing member to prevent movement thereof.

In this embodiment, the first boss 9 is symmetrically arranged, and three exhaust holes for pouring sealant are arranged on the first boss on which the pin needle is not mounted.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The preparation method of the low-cost ultrasonic sensor with the Pin needle is characterized by comprising the following steps of:

injection molding a preset fixing piece on the shell;

disposing the flange ceramic wafer in the housing;

respectively welding wires with the two Pin needles;

inserting the Pin needle of the welding wire into the fixing piece;

Welding the other end of the silk thread with the flanging ceramic;

Filling and sealing;

a notch is formed in the middle of the fixing piece, two mutually independent clamping grooves are formed in the side wall of the notch, and two Pin needles are respectively fixed in the clamping grooves;

the shell is provided with at least one positioning groove, the fixing piece is provided with a positioning buckle matched with the positioning groove, and the fixing piece is embedded at the upper part of the shell through the matching injection molding of the positioning buckle and the positioning groove;

the Pin needle is in a continuous bending shape, and the continuous bending shape comprises a clamping part horizontally arranged in the middle part, and is clamped in the clamping groove through the clamping part.

2. The method for manufacturing the low-cost Pin-needle ultrasonic sensor, which is disclosed in claim 1, is characterized in that the filling and sealing comprises the steps of filling foaming glue in a shell below the notch and filling sealing glue in the notch.

3. The method for manufacturing the low-cost Pin-needle ultrasonic sensor according to claim 1 is characterized in that the outer edge of the fixing piece is the same as the outer shell in diameter, the fixing piece and the locating buckle are integrally formed, and the locating buckle and the locating groove are clamped to form a cylindrical whole.