Circuit test tool

Abstract

The utility model discloses a circuit test tool, which is used for testing a circuit part of a product to be tested and comprises a box body, a first plug interface, a second plug interface and a circuit board interface, when the circuit test tool is used, the first plug interface is connected with a driver of the product to be tested, the driver is connected with a motor, the second plug interface is connected with a display of the product to be tested, and the circuit board interface is connected with the box body. The circuit board interface is connected with a control circuit mainboard of a to-be-tested product, the connected circuit test tool comprises a core component of the lithium battery impact wrench and is equivalent to a complete product, an operator can drive the driver through the control circuit mainboard, the driver drives the motor, and the display displays rotation data of the motor. According to the utility model, the plug-in circuit is arranged to detect whether the circuits of the driver, the control circuit mainboard and the display are normal or not, and the plug-in circuit is arranged, so that the detection test of each part of a product can be realized without product assembly, thereby improving the detection efficiency of the circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit performance detection, in particular to a circuit test tool. Background Art

[0002] The current circuit detection method for lithium-ion impact wrenches is: after all the components of the product (plastic housing, frame, motor, gearbox, driver, control circuit main board, button switch, working light) are assembled into a complete finished product, the motor forward and reverse rotation, speed addition and subtraction, function switching key, working light, start button and real-time display function of the display are tested. If a performance failure of the control circuit main board is detected, the product (complete finished product) needs to be disassembled and re-tested, and the circuit detection efficiency is low.

[0003] Therefore, how to improve the detection efficiency of circuits is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a circuit test tool to improve the detection efficiency of the circuit;

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A circuit test fixture is used to test the circuit part of the product to be tested, and the circuit part of the product to be tested at least includes a driver, a display and a control circuit mainboard;

[0007] The circuit test tooling includes a box body, a first plug interface, a second plug interface and a circuit board interface, the first plug interface is used to connect the driver, the driver is provided with a third plug interface, the third plug interface is used to connect the motor of the product to be tested, the second plug interface is used to connect the display, and the circuit board interface is used to connect the control circuit main board;

[0008] The plug-in ends of the first plug interface, the second plug interface and the circuit board interface are all located outside the box body, the first plug interface, the second plug interface and the circuit board interface are electrically connected through a plug-in circuit, and the electrical connection structure of the plug-in circuit is the same as the electrical connection structure between the driver, the display and the control circuit mainboard of the product to be tested.

[0009] Optionally, in the above-mentioned circuit testing tool, the circuit testing tool also includes a power plug interface located on the outside of the box body, and the power plug interface is used to connect the power supply of the circuit testing tool. The first plug interface, the second plug interface, the circuit board interface and the power plug interface are electrically connected through a plug-in circuit, and the electrical connection structure of the plug-in circuit is the same as the electrical connection structure between the driver, display, control circuit mainboard and product power supply of the product to be tested.

[0010] Optionally, in the above-mentioned circuit test tool, the circuit test tool further includes a power switch, which is electrically connected to the power socket and is used to control the turning on and off of the power of the circuit test tool.

[0011] Optionally, in the above-mentioned circuit test tool, the circuit test tool also includes a lighting lamp located outside the box body, the lighting lamp is electrically connected to the plug-in circuit, and during the test, it is controlled by a lighting lamp button on the control circuit mainboard.

[0012] Optionally, in the above-mentioned circuit test fixture, the power source is a battery, and the power socket is used to connect the battery.

[0013] Optionally, in the above-mentioned circuit test tool, the power plug interface includes an outer protective shell and a power contact arranged in the outer protective shell, and one end of the outer protective shell is formed with an insertion port for the power supply to slide into;

[0014] The end of the outer protective shell opposite to the insertion port has a limiting portion, and the limiting portion is used to limit the position of the power supply;

[0015] When the power source is matched with the power plug interface, the power source abuts against the limiting portion, and the power source is connected to the power contact.

[0016] Optionally, in the above-mentioned circuit testing tool, the circuit testing tool also includes a circuit breaker, which is electrically connected to the plug-in circuit and is used to control the opening and closing of the plug-in circuit. When the plug-in circuit is in an abnormal working state, the circuit breaker controls the plug-in circuit to disconnect from the power supply.

[0017] Optionally, in the above-mentioned circuit test tool, the circuit test tool also includes an alarm, which is electrically connected to the second plug interface and the circuit board interface. When the rotation data of the motor is inconsistent with the use parameters of the control circuit mainboard, the alarm issues an alarm.

[0018] Optionally, in the above-mentioned circuit test tool, the circuit test tool further includes a motor start / stop button located outside the box body, and the motor start / stop button is electrically connected to the plug-in circuit for controlling the start / stop of the motor.

[0019] Optionally, in the above-mentioned circuit test tool, the circuit test tool further includes an indicator mark located on the outer surface of the box body, and the indicator mark is used to indicate the positions of the first plug interface, the second plug interface and the circuit board interface.

[0020] The circuit test tool provided by the utility model, when in use, the first plug interface is connected to the driver of the product to be tested, the driver is connected to the motor, the second plug interface is connected to the display of the product to be tested, the circuit board interface is connected to the control circuit mainboard of the product to be tested, the circuit test tool after connection includes the core components of the lithium battery impact wrench, which is equivalent to a complete product, the operator can drive the driver through the control circuit mainboard, the driver drives the motor, and the display shows the rotation data of the motor to detect whether the circuits of the driver, the control circuit mainboard and the display are normal, and by arranging the plug-in circuit with the same electrical connection structure as the product to be tested, the detection test of each component of the product to be tested can be realized without product assembly, thereby improving the detection efficiency of the circuit.

[0021] It should be noted that in the existing lithium-ion impact wrenches and related products, the driver, control circuit main board and display are their core components. The purpose of testing the lithium-ion impact wrenches and related products is to detect whether the driver, control circuit main board and display can operate normally. Therefore, as long as the circuit test tooling can realize the performance detection of the driver, control circuit main board and display, it can detect the circuit performance of the lithium-ion impact wrench after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the circuit test tooling disclosed in the embodiment of the utility model;

[0024] in:

[0025] A power socket 100 , a first socket 200 , a second socket 201 , a circuit board interface 202 , a power switch 300 , a circuit breaker 301 , a lighting lamp 400 , a motor start / stop button 500 , and a box body 600 . DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making novel work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] like Figure 1 As shown, the circuit test tool disclosed in the utility model is used to test the circuit part of the product to be tested, and the circuit part of the product to be tested includes at least a driver, a display and a control circuit main board, including a box body 600, a first plug interface 200, a second plug interface 201 and a circuit board interface 202. The first plug interface 200 is used to connect the driver, and the driver is provided with a third plug interface, and the third plug interface is used to connect the motor of the product to be tested. The second plug interface 201 is used to connect the display, and the circuit board interface 202 is used to connect the control circuit main board. The plug ends of the first plug interface 200, the second plug interface 201 and the circuit board interface 202 are all located outside the box body 600, and the first plug interface 200, the second plug interface 201 and the circuit board interface 202 are electrically connected through a plug circuit, and the electrical connection structure of the plug circuit is the same as the electrical connection structure between the driver, the display and the control circuit main board of the product to be tested. It should be noted that the driver, display and control circuit main board are electrically connected through plug-in lines in the same way as a lithium-ion impact wrench or other product to be tested. The driver is connected to the motor to drive the output shaft of the motor to rotate. The control circuit main board includes a function button group, which is used to adjust the motor's operating parameters. The display is electrically connected to the motor to display the motor's rotation data.

[0029] Specifically, the plug-in circuit may include a plurality of plug interfaces. According to the increase of the detection components of the lithium-ion impact wrench, additional plug interfaces may be added in addition to the first plug interface 200, the second plug interface 201, the power plug interface 100 and the circuit board interface 202, so as to facilitate a more complete circuit detection of the lithium-ion impact wrench. Specifically, the third plug interface is connected to the output load connection line of the motor.

[0030] When in use, the operator connects the driver to the first socket 200, connects the motor to the third socket on the driver, plugs the display into the second socket 201, connects the control circuit mainboard to the circuit board interface 202 (the above connection operations do not strictly distinguish the order), and then turns on the power of the circuit test tooling to make the entire circuit energized and connected, observe whether the output shaft of the motor rotates normally, and then operate the function button group on the control circuit mainboard to observe the rotation of the motor and whether the content displayed on the display corresponds to the rotation of the motor or the function button group, so as to draw a conclusion on whether the circuit performance of the driver, control circuit mainboard and display meets the standards. The test process is rigorous and effectively improves the efficiency of circuit detection.

[0031] When the plug-in circuit of the circuit test fixture is connected to the driver, display and control circuit main board, the operator can adjust the use parameters of the motor through the function key group of the control circuit main board, and drive the motor to rotate through the driver, and observe the rotation data of the motor through the display. When the use parameters of the motor are consistent with the rotation data of the motor, the driver, motor, control circuit main board and display are all in normal state. When the use parameters of the motor are inconsistent with the rotation data of the motor, it is determined that the control circuit main board or the driver is in an abnormal state. The operator can replace the control circuit main board or the driver and test again. Therefore, when the plug-in circuit of the circuit test fixture is connected to the driver, display and control circuit main board, the circuit of the circuit test fixture is equivalent to the complete circuit of the lithium battery impact wrench or other products to be tested. There is no need to assemble the product to realize the detection test of each component of the product, thereby improving the detection efficiency of the circuit.

[0032] Further, the function button group includes a motor forward button, a motor reverse button and a motor speed gear button. The motor forward button is used to issue a forward command to the motor, and the motor reverse button is used to issue a reverse command to the motor. When the rotation direction of the motor does not match the command issued by the motor forward button or the motor reverse button, or when the speed of the motor does not match the command issued by the motor speed gear button, it is determined that the control circuit mainboard or the driver is in an abnormal state. Further, when in use, the operator presses the motor forward button, the motor reverse button or the motor speed gear button, and observes the rotation data of the motor through the display. If the content displayed on the display, the command issued by the function button group and the rotation data of the motor are consistent, it is determined that the driver, the motor, the control circuit mainboard and the display are all in a normal state.

[0033] In order to optimize the above technical solution, the circuit test tool also includes a power socket 100 located on the outside of the box body 600, and the power socket 100 is used to connect the power supply of the circuit test tool. The first socket 200, the second socket 201, the circuit board interface 202 and the power socket 100 are electrically connected through a plug-in circuit, and the electrical connection structure of the plug-in circuit is the same as the electrical connection structure between the driver, display, control circuit mainboard and product power supply of the product to be tested.

[0034] In order to optimize the above technical solution, the circuit test tool also includes a lighting lamp 400 located outside the box body 600. The lighting lamp 400 is electrically connected to the plug-in circuit and is controlled by the lighting lamp button of the control circuit main board during the test. Specifically, the function button group includes a lighting lamp on button and a lighting lamp off button. When the lighting lamp on button is in a working state, the lighting lamp 400 is in a lit state, and when the lighting lamp off button is in a working state, the lighting lamp 400 is in a turned-off state. Specifically, in a weak light environment, the lighting lamp 400 can be used for auxiliary operations. During use, if the operator controls the lighting lamp on button to turn on, the lighting lamp 400 lights up, and controls the lighting lamp off button to turn on, the lighting lamp 400 turns off, it is determined that the control circuit main board can control the lighting lamp to operate normally, thereby completing the circuit test of the part of the control circuit main board connected to the lighting lamp 400.

[0035] In order to optimize the above technical solution, the circuit test tool further includes a power switch 300 , which is electrically connected to the power socket 100 and is used to control the on and off of the power of the circuit test tool. When in use, the operator connects the power supply of the circuit test tool to the power socket 100, the driver to the first socket 200, the motor to the third socket on the driver, the display to the second socket 201, the control circuit mainboard to the circuit board interface 202, and then turns on the power switch 300 to make the circuit as a whole powered on and connected, operates the function key group on the control circuit mainboard, observes the rotation data of the motor, the display content of the display and the working state of the lighting lamp, and thus draws a conclusion on whether the circuit performance of the driver, the control circuit mainboard and the display meets the standard. When any two of the rotation data of the motor, the display content of the display, the instructions of the function key group and the working state of the lighting lamp do not match, it is determined that the driver, the control circuit mainboard or the display is in an abnormal state, the operator turns off the power switch 300, replaces one of the driver, the control circuit mainboard and the display, and performs a comparative test to conclude that a certain component in the driver, the control circuit mainboard and the display is in an abnormal state, and repairs or scraps the component in the abnormal state. Such an arrangement can make the circuit test process rigorous and save the process of reassembling the product, thereby improving the detection efficiency of the circuit.

[0036] In order to optimize the above technical solution, the power source is a battery, and the power socket 100 is used to connect the battery. Specifically, the battery is easy to replace, and the operator can replace batteries of different models according to the use needs.

[0037] In order to optimize the above technical solution, the power socket 100 includes an outer protective shell and power contacts arranged in the outer protective shell. An insertion port for the power supply to slide into is formed at one end of the outer protective shell. The end of the outer protective shell opposite to the insertion port has a limiting portion. The limiting portion is used to limit the position of the power supply. When the power supply is matched with the power socket 100, the power supply abuts against the limiting portion, and the power supply is connected to the power contact. Specifically, the power contact is connected to the plug circuit. When in use, the power supply of the circuit test tool slides into the outer protective shell from the insertion port until one end of the power supply abuts against the limiting portion. At this time, the power supply is connected to the power contact, so that the power supply can energize the plug circuit. Such an arrangement can achieve the stability of the power connection, thereby ensuring the circuit stability of the circuit test tool during circuit detection, so as to improve the detection efficiency of the circuit.

[0038] In order to optimize the above technical solution, the circuit test tool also includes a circuit breaker 301, which is electrically connected to the plug-in circuit and is used to control the opening and closing of the plug-in circuit. When the plug-in circuit is in an abnormal working state, the circuit breaker 301 controls the plug-in circuit to be disconnected from the power supply. Specifically, the circuit breaker 301 is located outside the box body 600. Specifically, when the circuit is misconnected, the circuit breaker 301 controls the plug-in circuit to be disconnected from the power supply to protect the circuit. By arranging the circuit breaker 301, it is possible to protect various components, improve the operational safety of the circuit test tool, and thus improve the detection efficiency of the circuit.

[0039] In order to optimize the above technical solution, the circuit test tool also includes an alarm, which is electrically connected to the second plug interface 201 and the circuit board interface 202. When the rotation data of the motor is inconsistent with the use parameters of the control circuit mainboard, the alarm issues an alarm. Specifically, when the motor is connected to the second plug interface 201 and the control circuit mainboard is connected to the circuit board interface 202, the alarm can simultaneously obtain the rotation data of the motor and the use parameters of the control circuit mainboard. Specifically, the rotation data of the motor is the forward, reverse and speed data of the motor, and the use parameters of the control circuit mainboard are the instructions issued by the operator to the driver through the key. Further, the alarm includes but is not limited to the form of sound alarm, light alarm, etc., as long as it can issue a warning to the operator, by arranging the alarm, it can assist the operator in determining whether the circuit performance of the driver, the control circuit mainboard and the display is normal, thereby further improving the detection efficiency of the circuit.

[0040] In order to optimize the above technical solution, the circuit test tool also includes a motor start / stop button 500 located outside the box body 600. The motor start / stop button 500 is electrically connected to the plug-in circuit to control the start / stop of the motor. By arranging the motor start / stop button 500, the motor can be protected, the operational safety of the circuit test tool is improved, and the detection efficiency of the circuit is improved.

[0041] In order to optimize the above technical solution, the circuit test tool also includes an indicator mark located on the outer surface of the box body 600, and the indicator mark is used to indicate the position of the first plug interface 200, the second plug interface 201 and the circuit board interface 202. Specifically, the indicator mark can be: control power supply, positive pole, negative pole, circuit breaker, control circuit main board, display, lighting, driver and other words, and is arranged correspondingly near the power plug interface 100, the positive and negative poles of the first plug interface 200, the circuit breaker 301, the circuit board interface 202, the second plug interface 201, the lighting 400 and the first plug interface 200, so that the operator can accurately connect each component. In addition, the operator can make corresponding marks on the outer surface of the box body 600 according to the operations frequently performed, so as to ensure the accuracy of the circuit wiring, improve the accuracy of the operator's operation, and further improve the efficiency of circuit detection.

[0042] The circuit test tool provided by the utility model can be applied to lithium-ion impact wrenches or other products that require detection of electrical components. The circuit test tool provided by the utility model has a simple structure, low manufacturing cost, and high reliability. The test tool is equivalent to the assembled product. The detection process is convenient and efficient, saving manpower and material resources, and improving the detection efficiency of the circuit.

[0043] It should be noted that the circuit test tool provided by the present invention can be used in the field of circuit performance detection technology or other fields. Other fields are any fields other than the field of circuit performance detection technology. The above is only an example and does not limit the application field of the circuit test tool provided by the present invention.

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit test tool, characterized in that: Used to test the circuit part of the product to be tested, wherein the circuit part of the product to be tested at least includes a driver, a display and a control circuit mainboard; The circuit test tool comprises a box body, a first plug interface, a second plug interface and a circuit board interface, wherein the first plug interface is used to connect the driver, the driver is provided with a third plug interface, the third plug interface is used to connect the motor of the product to be tested, the second plug interface is used to connect the display, and the circuit board interface is used to connect the control circuit mainboard; The plug-in ends of the first plug interface, the second plug interface and the circuit board interface are all located outside the box body, the first plug interface, the second plug interface and the circuit board interface are electrically connected through a plug-in circuit, and the electrical connection structure of the plug-in circuit is the same as the electrical connection structure between the driver, the display and the control circuit mainboard of the product to be tested.

2. The circuit test fixture according to claim 1, characterized in that: The circuit test tool also includes a power socket located outside the box body, and the power socket is used to connect the power supply of the circuit test tool. The first socket, the second socket, the circuit board interface and the power socket are electrically connected through a plug-in circuit, and the electrical connection structure of the plug-in circuit is the same as the electrical connection structure between the driver, display, control circuit mainboard and product power supply of the product to be tested.

3. The circuit test tool as claimed in claim 2, characterized in that: The circuit test tool also includes a power switch, which is electrically connected to the power socket and is used to control the turning on and off of the power of the circuit test tool.

4. The circuit test fixture according to claim 1, characterized in that: The circuit test tool also includes a lighting lamp located outside the box body, the lighting lamp is electrically connected to the plug-in circuit, and during the test, is controlled by a lighting lamp button on the control circuit mainboard.

5. The circuit test tool as claimed in claim 2, characterized in that: The power source is a battery, and the power socket is used to connect the battery.

6. The circuit test fixture as claimed in claim 5, characterized in that: The power socket comprises an outer protective shell and a power contact arranged in the outer protective shell, and one end of the outer protective shell is formed with an insertion port for the power supply to slide into; The end of the outer protective shell opposite to the insertion port has a limiting portion, and the limiting portion is used to limit the position of the power supply; When the power source is matched with the power socket, the power source abuts against the limiting portion, and the power source is connected to the power contact.

7. The circuit test tool as claimed in claim 2, characterized in that: The circuit test tool also includes a circuit breaker, which is electrically connected to the plug circuit and is used to control the opening and closing of the plug circuit. When the plug circuit is in an abnormal working state, the circuit breaker controls the plug circuit to be disconnected from the power supply.

8. The circuit testing tool as claimed in claim 1, characterized in that: The circuit test tool also includes an alarm device, which is electrically connected to the second plug interface and the circuit board interface. When the rotation data of the motor is inconsistent with the use parameters of the control circuit mainboard, the alarm device issues a warning.

9. The circuit test fixture according to claim 1, characterized in that: The circuit test tool also includes a motor start / stop button located outside the box body, and the motor start / stop button is electrically connected to the plug-in circuit for controlling the start / stop of the motor.

10. The circuit test fixture according to claim 1, characterized in that: The circuit test tool further includes an indicator mark located on the outer surface of the box body, and the indicator mark is used to indicate the positions of the first plug interface, the second plug interface and the circuit board interface.

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