Anti-dry burning test fixture for ultrasonic unit
By designing an ultrasonic unit anti-dry burning test fixture, the problem of test failure during the assembly process was solved, and intuitive testing and data display of ultrasonic circuit boards were achieved to ensure the accuracy of test results.
Patent Information
- Application Number
- CN202422586297.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the prior art, ultrasonic anti-dry-burning units are prone to test failure due to interference factors during the assembly process, and the lack of specialized test fixtures leads to insufficient verification.
An ultrasonic unit anti-dry burning test fixture was designed, which includes a fixing base, a control module, a manual pressing mechanism and a baffle. The power supply and node current or voltage detection are carried out through the connecting pin. The baffle separates the transmitting part and the circuit board. The detection data is displayed on the display, realizing intuitive testing.
The working condition of the ultrasonic circuit board can be observed visually during the test, which can prevent water from splashing onto the circuit board and causing interference failures, ensure the accuracy of the test results, and eliminate test failures caused by interference factors during the assembly process.
Smart Images
Figure CN223389862U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of test fixtures, in particular to an ultrasonic unit anti-dry burning test fixture. Background Art
[0002] Anti-dry-burn technology is necessary in most devices with evaporation functions, the most common of which are atomizers or kettles. There are many technologies for anti-dry-burning, such as capacitive current detection, temperature detection, and ultrasonic detection, etc. No matter which anti-dry-burn technology is used, it needs to be verified and tested before it can be used. This application focuses on the ultrasonic anti-dry-burn unit. At present, the anti-dry-burn circuit module is relatively mature. Usually, only the circuit board is tested, mainly to detect its current, voltage and other parameters. There are few separate tests for unit modules, or the circuit board is verified first, and then the whole machine is assembled and tested after there is no problem. However, various problems in the assembly process often lead to test failures. Utility Model Content
[0003] The purpose of the present invention is to provide an ultrasonic unit anti-dry burning test fixture to solve the problems raised in the above background technology.
[0004] To achieve the above objectives, the present invention provides the following technical solutions:
[0005] An ultrasonic unit anti-dry burning test fixture, comprising a fixing base, on which a control module and a manual pressing mechanism are installed;
[0006] Several connecting pins are installed at the bottom of the manual pressing mechanism and a baffle is provided on one side thereof. The connecting pins are electrically connected to the control module and can be electrically connected to the ultrasonic circuit board for power supply and detection of node current or voltage. The ultrasonic circuit board is placed on the base, and the transmitting part of the ultrasonic circuit board extends out of the base. A notch is provided at the lower edge of the baffle, and the notch is used to engage with the transmitting part and separate the transmitting part and the ultrasonic circuit board.
[0007] According to a further technical solution, the edge of the ultrasonic circuit board contacts the baffle, and the baffle notch is engaged with the transmitting part to form a positioning structure.
[0008] According to a further technical solution, the control module includes an electrically connected controller, a display and buttons, and the display is used to display the detection data.
[0009] According to a further technical solution, a drawer is provided on one side of the fixing seat, and a handle is provided on the end surface of the drawer.
[0010] According to a further technical solution, a second handle is provided on the fixing seat relative to the first handle.
[0011] Beneficial effects of the utility model:
[0012] This fixture can test ultrasonic circuit boards with a transmitter. Water is injected into the transmitter during the test, allowing for intuitive visualization of the working conditions of the unit under test. This means the transmitter connection can be completed before testing, eliminating interference during subsequent assembly that could lead to test failures.
[0013] In addition, water will pop out during the atomization process. The baffle can be set to separate the transmitting part and the ultrasonic circuit board to prevent water from splashing onto the ultrasonic circuit board and causing interference failure.
[0014] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 : The three-dimensional structure of the utility model Figure 1 .
[0016] Figure 2 : The three-dimensional structure of the utility model Figure 2 .
[0017] Figure numerals: 11-fixing seat, 12-drawer, 13-handle one, 14-handle two, 2-manual pressing mechanism, 31-connecting pin, 32-display, 33-button, 41-baffle, 42-notch, 51-ultrasonic circuit board, 52-transmitting part, 6-base. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0019] Please refer to Figure 1-2 ;
[0020] The present invention aims to realize functional testing of a circuit board while being able to more intuitively observe the actual operating conditions so as to know the final effect of the test unit's operation. The functional unit to be tested in this fixture has two parts, namely a circuit board and a transmitting part 52 that have been electrically connected together. The circuit board is integrated with an ultrasonic circuit and an anti-dry-burning circuit. When powered on, the ultrasonic circuit will generate a high-frequency signal, and finally generate an ultrasonic wave from the transmitting part 52. Taking an atomizer as an example, if there is water in the atomizer, the high-frequency vibration generated by the ultrasonic wave will vibrate the water molecules to produce tiny water droplets, thereby achieving the effect of atomization. The ultrasonic vibrator generates high-frequency sound waves, which create strong shear and shock forces on the surface of the liquid, instantly atomizing the liquid into fine mist of extremely small particles. Since the ultrasonic atomizer relies on the vibration of water molecules to achieve atomization, if the water molecules are vibrated dry, the ultrasonic atomizer will produce a dry-burning phenomenon. When the ultrasonic atomizer is in a working state with water and without water, the current will change. The anti-dry-burning circuit determines the working state of the ultrasonic atomizer by detecting this current change, and cuts off the power supply when it is in a dry-burning state. It should be noted that the above-mentioned anti-dry-burning circuit and ultrasonic circuit are relatively mature at present. Since they have not been improved, the structures are not described in detail one by one. For details, please refer to the implementation method of the existing technology.
[0021] Based on the above principles, a fixture specially designed for testing the unit specifically includes a fixing base 11, on which a control module and a manual pressing mechanism 2 are mounted. The manual pressing mechanism 2 has a plurality of connecting pins 31 mounted on the bottom and a baffle 41 on one side. The connecting pins 31 are electrically connected to the control module. Below the manual pressing mechanism 2 is a base 6 for placing an ultrasonic circuit board 51.
[0022] When in use, the ultrasonic circuit board 51 is first placed on the base 6, and the transmitting part 52 of the ultrasonic circuit board 51 extends out of the base 6 and is aligned with the notch 42 of the baffle 41, and then the manual pressing mechanism 2 is used to push the connecting pins 31 downward to connect with the contacts of the ultrasonic circuit board 51. These connecting pins 31 are respectively used to supply power to the ultrasonic circuit board 51 and detect the node current or voltage and feed it back to the control module. At the same time, the notch 42 of the baffle 41 is engaged with the transmitting part 52 to fix the ultrasonic circuit board 51, and then a small amount of water is injected into the transmitting part 52; after turning on the power, the ultrasonic circuit board 51 is energized to make the transmitting part 52 work. At this time, the transmitting part 52 atomizes this part of the water, which is a normal operation. After the water is completely atomized, it is in a burnt-dry state. The anti-dry-burning circuit will immediately cut off the power supply. This is a normal test. If the power is not cut off when it is in the burnt-dry state, the transmitting part 52 will continue to work, which means that the module test has failed. All data in the above process will be fed back to the control module.
[0023] In addition, water will pop out during the atomization process. The baffle 41 can be set to separate the transmitting part 52 and the ultrasonic circuit board 51 to prevent water from splashing onto the ultrasonic circuit board 51 and causing interference failure.
[0024] This fixture can test an ultrasonic circuit board 51 having a transmitting part 52, and water is injected into the transmitting part 52 during the test, which can intuitively show the working condition of the unit under test, that is, the connection of the transmitting part 52 can be completed before testing, eliminating interference factors in the subsequent assembly process that may cause test failure.
[0025] The jig in the present invention is handmade and is only for specific products, so there is no fixed structure specifically for fixing the ultrasonic unit. In this embodiment, the base 6 has a step, and the baffle 41 is flush with the step. During the pressing process, the notch 42 of the baffle 41 will first engage with the transmitting part 52, and then the ultrasonic circuit board 51 will be pushed toward the baffle 41 to fit it, just corresponding to the connecting pin 31 on the manual pressing mechanism 2. In this way, a positioning structure has been formed, making the structure of the jig relatively simple and easy to manufacture.
[0026] In an embodiment of the present invention, the control module includes an electrically connected controller, a display 32 and a button 33. There are at least two specific cases, one for starting and the other for shutting down. When the anti-dry-burning circuit board fails, the transmitter 52 will continue to work. At this time, it is necessary to manually cut off the power supply of the fixture. In addition, the display 32 is used to display the detection data. The data of the node of the ultrasonic circuit board 51 detected by the connecting needle 31 is fed back to the controller and then presented on the display 32, so that the operator can see the data changes more intuitively.
[0027] In the embodiment of the present utility model, a drawer 12 is provided on one side of the fixing base 11 for storing maintenance tools. A handle 13 is provided on the end face of the drawer 12, and the handle 13 is convenient for pulling out the drawer 12. The fixing base 11 is provided with a handle 2 14 at a position relative to the handle 13. The cooperation between the handle 13 and the handle 2 14 facilitates the lifting and relocation of the jig.
[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.
Claims
1. An ultrasonic unit anti-dry burning test fixture, comprising a fixing seat (11), a control module and a manual pressing mechanism (2) being mounted on the fixing seat (11), characterized in that: The manual pressing mechanism (2) is provided with a plurality of connecting pins (31) at the bottom thereof and a baffle (41) on one side thereof. The connecting pins (31) are electrically connected to the control module and can be electrically connected to the ultrasonic circuit board (51) for power supply and detection of node current or voltage. The ultrasonic circuit board (51) is placed on the base (6), and the transmitting part (52) of the ultrasonic circuit board (51) extends out of the base (6). A notch (42) is provided at the lower edge of the baffle (41). The notch (42) is used to engage with the transmitting part (52) and separate the transmitting part (52) and the ultrasonic circuit board (51).
2. The ultrasonic unit anti-dry burning test fixture according to claim 1, characterized in that: The edge of the ultrasonic circuit board (51) contacts the baffle (41), and the notch (42) of the baffle (41) is engaged with the transmitting portion (52) to form a positioning structure.
3. The ultrasonic unit anti-dry burning test fixture according to claim 1, characterized in that: The control module comprises an electrically connected controller, a display (32) and a button (33), wherein the display (32) is used to display detection data.
4. The ultrasonic unit anti-dry burning test fixture according to claim 1, characterized in that: A drawer (12) is provided on one side of the fixing seat (11), and a handle (13) is provided on the end surface of the drawer (12).
5. The ultrasonic unit anti-dry burning test fixture according to claim 4, characterized in that: The fixing seat (11) is provided with a second handle (14) at a position relative to the first handle (13).