Detection box for rapidly detecting multi-branch piezoelectric ceramic polarization clamp

Abstract

The utility model discloses a detection box for rapidly detecting a multi-branch piezoelectric ceramic polarization clamp, which comprises a shell box body and a detection assembly, and the top of the shell box body is detachably connected with a box cover. The detection assembly comprises a spring bearing plate which is arranged in the inner cavity of the shell box body and is used for placing a circuit clamp to be detected, a power supply which is arranged on the bottom surface of the inner cavity of the shell box body, and an indicating circuit which is arranged at the inner bottom of the box cover, and spring probes which are used for correspondingly contacting with branches of the circuit clamp to be detected are distributed at the top of the spring bearing plate at intervals; the circuit is low in voltage, is high in safety coefficient, can achieve the automatic detection, is convenient to use, can rapidly and accurately detect whether the branch of the polarization clamp is abnormal or not, can completely eradicate the polarization condition under the circuit fault, improves the efficiency of detecting the fault of the branch, achieves the detection of all polarization clamps before working every day, and improves the work efficiency. The problem that time and labor are wasted when the multimeters detect one by one is solved.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric ceramic technology, specifically a testing box for rapidly testing multi-branch piezoelectric ceramic polarization fixtures. Background Technology

[0002] Piezoelectric ceramic sheets are core components of piezoelectric buzzers, piezoelectric sensors, and ultrasonic transducers. The polarization of the piezoelectric ceramic sheet directly affects the consistency and quality of its electrical performance. Currently, the polarization method for piezoelectric ceramics is mostly manual stacked polarization. The polarization fixture used consists of hundreds of resistors connected in parallel, i.e., multiple resistors are connected in parallel on the upper surface of a polyethylene plate. The lower surface of the polyethylene plate is connected to each resistor on the upper surface of the polyethylene plate by a pin passing through a spring. The lower end of the pin is connected to a circular metal plate. The above-mentioned polarization fixture is simple to maintain and has high production efficiency, but it has many branches and is prone to damage. Currently, the method for detecting whether the branches are damaged is to test them one by one with a multimeter, which is inefficient and therefore difficult to achieve daily regular testing. Often, damaged resistors continue to be polarized, resulting in some ceramic sheets having no piezoelectric performance. To address this, a testing box for rapidly testing multi-branch piezoelectric ceramic polarization fixtures is proposed to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a testing box for rapidly testing multi-branch piezoelectric ceramic polarization fixtures, in order to solve the problems mentioned in the background art, such as low efficiency, difficulty in achieving daily regular testing, and the fact that some ceramic sheets still show no piezoelectric polarization.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A testing box for rapid testing of multi-branch piezoelectric ceramic polarization fixtures includes:

[0006] The outer casing has a lid that is detachably connected to its top.

[0007] The detection assembly includes a spring support plate installed in the inner cavity of the housing for placing a fixture for the circuit under test, a power supply installed on the bottom surface of the inner cavity of the housing, and an indicator circuit installed on the bottom of the inner cover. The top of the spring support plate has spring probes spaced apart for corresponding contact with each branch of the fixture for the circuit under test. The spring probes are electrically connected to the indicator circuit. The power supply has a positive lead for connecting to the fixture for the circuit under test, and a negative lead for connecting to the indicator circuit. Each branch of the indicator circuit is composed of a resistor and an indicator light connected in series.

[0008] Furthermore, the diameter of the spring probe is 1.2mm-5mm, the diameter of the needle tube of the spring probe is 1mm-4mm, the total needle length of the spring probe is 20mm-40mm, and the spring probes are installed in parallel on the spring support plate according to the arrangement of the indicator lights on the indicator circuit.

[0009] Furthermore, the power supply has a voltage of 12V or 24V, and a rubber pad is provided at the contact position between the bottom of the power supply and the bottom of the inner cavity of the outer casing.

[0010] Furthermore, the outer casing is made of wood or plastic, and the top right side of the outer casing is connected to the bottom right side of the lid by a hinge.

[0011] The beneficial effects of this utility model are: the circuit voltage is low, the safety factor is high, it can be tested by itself, it is convenient to use, it can quickly and accurately detect whether the branch of the polarization fixture is abnormal, it can eliminate the situation of polarization under circuit fault, improve the efficiency of detecting branch faults, and realize the testing of all polarization fixtures before each day's work, solving the problem of time-consuming and laborious testing with a multimeter one by one. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the testing box of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention in the combination of resistor and indicator light;

[0014] Figure 3 This is a bottom view of the structure of the box cover of this utility model;

[0015] Figure 4 This is a top view of the structure of the spring bearing plate of this utility model.

[0016] In the diagram: 1 Positive lead, 2 Negative lead, 3 Resistor, 4 Indicator light, 5 Spring probe, 6 Housing, 7 Cover, 8 Spring support plate, 9 Power supply. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This invention provides a technical solution for a rapid testing box for multi-branch piezoelectric ceramic polarization fixtures, comprising an outer casing 6 and a testing assembly. The top of the outer casing 6 is detachably connected to a lid 7. Preferably, the outer casing 6 is made of, but not limited to, wood or plastic. The top right side of the outer casing 6 is connected to the bottom right side of the lid 7 via a hinge. The outer casing 6 houses a spring support plate 8, and the lid 7 is equipped with indicator lights 4. The testing assembly includes a spring support plate 8 installed inside the outer casing 6 for placing the fixture to be tested, a power supply 9 installed on the bottom surface of the inner cavity of the outer casing 6, and an indicator circuit installed at the bottom inside the lid 7. The top of the spring support plate 8 is spaced apart with spring probes 5 for corresponding contact with each branch of the fixture to be tested, and the spring probes 5 are electrically connected to the indicator circuit.

[0019] It should be noted that the power supply 9 has a positive lead 1 for connecting to the fixture of the circuit under test, and a negative lead 2 for connecting to the indicator circuit. The voltage of the power supply 9 is 12V or 24V. I_power_su = nI_lamp, and the power supply power P = I_power_su + U_power_su, where U_power_su is the voltage of the power supply 9, V_lamp is the voltage of the indicator light 4, I_lamp is the current of the indicator light 4, and n represents the number of branches of the fixture of the circuit under test. A rubber pad is provided at the contact position between the bottom of the power supply 9 and the bottom of the inner cavity of the housing 6. The rubber pad can reduce the contact wear between the power supply 9 and the housing 6 during use. Each branch of the indicator circuit is composed of a resistor 3 and an indicator light 4 connected in series.

[0020] In this embodiment, the diameter of the spring probe 5 is 1.2mm-5mm, the diameter of the needle tube of the spring probe 5 is 1mm-4mm, and the total needle length of the spring probe 5 is 20mm-40mm. The spring probe 5 is installed in parallel on the spring support plate 8 according to the arrangement of the indicator lights 4 on the indicator circuit. The spring probe 5 adopts a conventional model available on the market. The structure and principle of the spring probe 5 are well-known technologies in the market, so they will not be described in detail here. The stroke of the spring probe 5 is generally greater than the sum of the deformation of the piezoelectric ceramic polarized clamp spring and the height difference of the ceramic sheet stack, and is generally 5mm-10mm.

[0021] This rapid testing box for multi-branch piezoelectric ceramic polarization fixtures is used by first placing the fixture to be tested on the spring support plate 8, ensuring that each branch of the fixture is in contact with the spring probe 5 of each branch on the spring support plate 8. The positive lead 1 of the power supply 9 is connected to the fixture, and the power supply 9 is turned on. Observe whether all indicator lights 4 of the indicator circuit are lit. If indicator lights 4 are not lit, the branch is damaged; if all indicator lights 4 are lit, all branches are normal. The indicator circuit is used to detect whether there is a fault in each branch. If all indicator lights 4 are lit, it means that all branches are fault-free. If indicator lights 4 are not lit, it means that the branch is damaged. Indicator lights 4 are standard indicator lights available on the market. Each branch has a protective resistor 3 connected in series with indicator lights 4. The resistor 3 is represented by R. R = (U power supply - V light) / I light, where U power supply is the voltage of power supply 9; V light is the voltage of indicator lights 4, which is generally around 3V; and I light is the current of indicator lights 4, which is generally around 20mA. The circuit board is made or customized according to the polarization fixture, and the indicator lights 4 are soldered on the circuit board in parallel.

[0022] In summary, this rapid testing box for multi-branch piezoelectric ceramic polarization fixtures can quickly and accurately detect whether the branches of the polarization fixture are abnormal. Testing one polarization fixture only takes half a minute, solving the problem of time-consuming and laborious testing with a multimeter one by one. It also improves the efficiency of detecting branch faults, enabling all polarization fixtures to be tested before each workday, eliminating the situation where polarization still occurs under circuit faults. The rapid testing box for multi-branch piezoelectric ceramic polarization fixtures is used by placing the fixture to be tested on the spring support plate 8, turning on the power supply 9, and observing whether all indicator lights 4 are lit. If indicator lights 4 are not lit, the branch is damaged; if all indicator lights 4 are lit, all branches are normal.

[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0024] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be understood that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. In the present utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Among them, there are various ways of detachable installation, such as by plugging and snapping, or by bolt connection, etc.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection box of a fast detection multi-branch piezoelectric ceramic polarization clamp, characterized in that, include: The outer casing has a lid that is detachably connected to its top. The detection assembly includes a spring support plate installed in the inner cavity of the housing for placing a fixture for the circuit under test, a power supply installed on the bottom surface of the inner cavity of the housing, and an indicator circuit installed on the bottom of the inner cover. The top of the spring support plate has spring probes spaced apart for corresponding contact with each branch of the fixture for the circuit under test. The spring probes are electrically connected to the indicator circuit. The power supply has a positive lead for connecting to the fixture for the circuit under test, and a negative lead for connecting to the indicator circuit. Each branch of the indicator circuit is composed of a resistor and an indicator light connected in series.

2. The detection box of the quick detection multi-branch piezoelectric ceramic polarization clamp according to claim 1, wherein: The spring probe has a diameter of 1.2mm-5mm, a needle tube diameter of 1mm-4mm, and a total needle length of 20mm-40mm. The spring probes are connected in parallel on the spring support plate according to the arrangement of the indicator lights on the indicator circuit.

3. The testing box for rapid testing of multi-branch piezoelectric ceramic polarization fixtures according to claim 1, characterized in that: The power supply has a voltage of 12V or 24V, and a rubber pad is provided at the contact position between the bottom of the power supply and the bottom of the inner cavity of the outer casing.

4. The detection box of the quick detection multi-branch piezoelectric ceramic polarization clamp according to claim 1, characterized in that: The outer casing is made of wood or plastic, and the top right side of the outer casing is connected to the bottom right side of the lid by a hinge.

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