CN211180032U - Testing device - Google Patents

Abstract

The utility model belongs to the technical field of the household electrical appliances detect, especially, relate to a testing arrangement. Testing arrangement is used for striking sparks the test to electronic product, and it includes: the clamping structure is used for clamping and positioning the electronic product; the electricity leading structure is used for being in contact with the pins of the electronic product; the electromagnetic vibration component is used for driving the electricity leading structure to move at a preset frequency, and the control circuit is used for adjusting the preset frequency and driving the electromagnetic vibration component to vibrate. The utility model provides a testing arrangement can make the equal linear adjustable of vibration frequency and vibration amplitude of the in-process of striking sparks to guarantee the continuation and the continuity of the test of striking sparks.

Description

Testing device

Technical Field

The utility model belongs to the technical field of the household electrical appliances detect, especially, relate to a testing arrangement.

Background

With the rapid development of economy and the improvement of living standard of people, digital and electric products are rapidly popularized, and the power of a charger and an adapter matched with the digital and electric products is increased. Therefore, in recent years, security accidents related to chargers and adapters have often occurred, and attention has been paid to security of power supply products.

Usually, the charger or the adapter is directly connected to the ac power grid, the quality of the charger or the adapter is directly related to the personal and property safety of the user, and if the charger or the adapter is not designed in consideration of the risk of poor contact between the ac power input and the socket, the charger or the adapter may cause power supply damage and even cause the risks of fire, electric shock, scald, and the like.

At present, no mature testing method and device exist, and the continuous poor contact sparking test cannot be implemented.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a testing arrangement aims at solving how to carry out the problem of the test of striking sparks of continuity to the electronic product with predetermineeing the frequency.

The utility model provides a testing arrangement for carry out the test of striking sparks to electronic product, a serial communication port, testing arrangement includes:

the clamping structure is used for clamping and positioning the electronic product;

the electricity leading structure is used for being in contact with the pins of the electronic product;

an electromagnetic vibration component for driving the electricity-leading structure to move at a preset frequency, an

And the control circuit is used for adjusting the preset frequency and driving the electromagnetic vibration component to vibrate.

In one embodiment, the electricity introducing structure includes: the electromagnetic vibration component comprises an insulating seat and two electric contact pieces, wherein the insulating seat is connected with the electromagnetic vibration component and made of an insulating material, and the two electric contact pieces are made of a conductive material and are arranged on the insulating seat at intervals; the two electric contact pieces are connected with an external power supply and are in electric contact with the pins of the electronic product.

In one embodiment, the insulating base includes an insulating plate for fixing with the electromagnetic vibration part, and a fixing rod for fixing with the insulating plate; the fixed rods are arranged at intervals, and the two electric contact pieces are respectively connected with the two fixed rods.

In one embodiment, the electrical contacts specifically comprise: the elastic sheet is connected with the corresponding fixing rod, and the electric contact salient point is arranged on the elastic sheet; the elastic sheet is connected with an external power supply, and the electric contact salient point is electrically contacted with the plug pin.

In one embodiment, the electricity leading structure further comprises a distance adjusting mechanism for adjusting the distance between the two fixing rods; at least one of the fixed rods is provided with an adjusting groove, the distance adjusting mechanism comprises an adjusting block, one end of the adjusting block is connected with the insulating plate, the other end of the adjusting block is located in the adjusting groove, and the fixed rods slide along the corresponding adjusting blocks through the adjusting grooves to adjust the distance between the two fixed rods.

In one embodiment, the electromagnetic vibration component includes: two plate spring that the interval set up, set up in two electro-magnet between the plate spring and connect one of them plate spring and can with the electro-magnet produces the magnetism piece of inhaling the effect of inhaling, two the one end of plate spring all is fixed to be set up on testing arrangement's bottom plate, two the other end of plate spring all is connected draw electric structure, the electro-magnet produce periodic electromagnetic field under conductive state and with magnetism piece takes place periodic magnetism and inhale the effect, in order to drive draw electric structure with predetermineeing the frequency removal, thereby with the electrical contact is participated in of electronic product.

In one embodiment, the clamping structure comprises: the clamping device comprises a clamping table for clamping the electronic product, a height adjusting mechanism for adjusting the height of the clamping table, a first horizontal adjusting mechanism for adjusting the clamping table to move along a first direction, and a second horizontal adjusting mechanism for adjusting the clamping table to move along a second direction, wherein the first direction and the second direction are orthogonally arranged.

In one embodiment, the test apparatus further comprises: the operation panel is used for setting parameters of the control circuit and is provided with a power switch key and a frequency setting area; the power switch key is used for controlling whether the testing device is powered on or not; the frequency setting area is used for setting a plurality of frequency points, so that the testing device can automatically switch frequencies and complete testing.

In one embodiment, the operation panel is further provided with a time setting area and a moving distance setting area; the time setting area is used for setting the test time of the test device; and the moving distance setting area is used for setting the horizontal moving distance of the electricity leading structure.

In one embodiment, the testing device further comprises a box body, wherein the clamping structure, the electricity leading structure, the electromagnetic vibration component and the operation panel are arranged outside the box body, and the control circuit is arranged inside the box body.

The technical effects of the utility model are that: the electric parameters of the control circuit are adjusted and set, so that the aim of adjusting the preset frequency is achieved, the electromagnetic vibration component drives the electricity leading structure to vibrate in a reciprocating mode, and the charger is subjected to ignition testing. The charger can be prevented from being plugged in and pulled out manually or the loose extension socket of the elastic sheet can be manufactured manually to carry out manual simulation test, and the abnormal contact of the alternating current input can not be simulated effectively. Furthermore, the testing device provided by the embodiment also enables the vibration frequency and the vibration amplitude in the ignition process to be linearly adjustable, and ensures the continuity of electrical contact.

Drawings

Fig. 1 is a three-dimensional structure diagram of a testing device provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the current-carrying structure and the electromagnetic vibration component of FIG. 1;

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a schematic structural view of the fixing bar of FIG. 4;

FIG. 6 is a left side view of FIG. 2;

FIG. 7 is a schematic structural view of the clamping structure of FIG. 1;

FIG. 8 is a right side view of FIG. 7;

FIG. 9 is a top view of FIG. 7;

FIG. 10 is a schematic view of the slide rail of FIG. 7 with the clamping block engaged with the clamping seat;

fig. 11 is a schematic structural diagram of an operation panel provided in another embodiment of the present invention;

fig. 12 is a circuit schematic diagram of a control circuit provided in a further embodiment of the present invention.

The correspondence between reference numbers and names in the drawings is as follows:

100. a testing device; 10. a clamping structure; 20. a charging structure; 30. an electromagnetic vibration component; 21. an electrical contact; 211. electrically contacting the bumps; 212. a spring plate; 22. an insulating base; 221. fixing the rod; 222. an insulating plate; 23. a locking mechanism; 231. locking the bolt; 232. a locking block; 31. an electromagnet; 32. a magnetic member; 33. a plate spring; 24. a distance adjusting mechanism; 241. an adjusting block; 2211. an adjustment groove; 11. a clamping table; 111. a clamping seat; 112. a clamping block; 113. clamping a screw rod; 114. an adjustment wheel; 115. a containing groove; 116. a guide post; 1111. a slide rail; 12. a height adjustment mechanism; 121. an upper adjusting nut; 122. a height screw; 123. a lower adjusting nut; 13. a first horizontal adjustment mechanism; 131. a first horizontal base; 132. a first sliding table; 133. a first lead screw; 14. a second horizontal adjustment mechanism; 143. a second horizontal base; 142. a second sliding table; 141. a second lead screw; 60. an operation panel; 61. a frequency setting region; 66. a time setting area; 62. an intermittent control setting area; 63. a continuous test time setting region; 64. an emergency shutdown key; 65. a power switch key;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "vertical", "parallel", "bottom", "angle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship.

Referring to fig. 1 to 3, an embodiment of the present invention provides a testing apparatus 100 for performing an ignition test on an electronic product, wherein optionally, the electronic product is a charger or an adapter, and the electronic product in this embodiment is a charger. The test apparatus 100 includes: the clamping structure 10, the electricity-guiding structure 20 arranged opposite to the clamping structure 10, the electromagnetic vibration component 30 and the control circuit. The clamping structure 10 is used to clamp and position the charger so that the charger is maintained in a proper spatial position relative to the power conducting structure 20. One end of the power guiding structure 20 is connected to a power source, and the other end of the power guiding structure 20 is used for electrically contacting with the pins of the charger. The electromagnetic vibration component 30 is used for driving the electricity leading structure 20 to reciprocate at a preset frequency so as to carry out a sparking test on the charger. The control circuit is electrically connected to the electromagnetic vibration component 30 and is configured to adjust a value of the predetermined frequency, so as to adjust a vibration frequency of the electromagnetic vibration component 30 driving the power structure 20. It is understood that the adjustment of the preset frequency includes an increase adjustment of the preset frequency and a decrease adjustment of the preset frequency. Optionally, the adjustment range of the preset frequency is 5-100 Hz.

Referring to fig. 4 to 6, the electrical parameters of the control circuit are adjusted to achieve the purpose of adjusting the preset frequency, and the electromagnetic vibration component 30 drives the charging structure 20 to vibrate back and forth to perform the ignition test on the charger. The problem that the charger needs to be plugged in and pulled out in a hot-line mode manually or the loose extension socket of the elastic sheet 212 needs to be manufactured manually to carry out manual simulation test, and the abnormal contact of alternating current input cannot be effectively simulated is avoided. Further, the testing device 100 provided by the embodiment also enables both the vibration frequency and the vibration amplitude during the sparking process to be linearly adjustable, and ensures the continuity of the electrical contact.

In one embodiment, the current guiding structure 20 includes: an insulating base 22 made of an insulating material and connecting the electromagnetic vibration member 30, and two electric contact pieces 21 made of a conductive material and disposed at intervals on the insulating base 22. Alternatively, the material of the insulating base 22 may be insulating plastic, and the material of the electrical contact piece 21 may be copper with good electrical conductivity. Both electrical contacts 21 are connected to an external power source and make electrical contact with the pins of the charger. The electromagnetic vibration unit 30 drives the insulator 22 to perform reciprocating vibration at a predetermined frequency, so that the two electrical contacts 21 are respectively subjected to a spark test with the two pins of the charger.

In one embodiment, the insulating base 22 includes an insulating plate 222 for fixing with the electromagnetic vibration part 30, and a fixing rod 221 fixed with the insulating plate 222; two fixing rods 221 are arranged at intervals, and two electric contact pieces 21 are respectively connected with the two fixing rods 221. Optionally, the distance between the two fixing rods 221 is adapted to the distance between the two pins of the charger, so that the distance between the two electrical contacts 21 is also adapted to the distance between the two pins of the charger, thereby ensuring that the two electrical contacts 21 are respectively in electrical contact with the two pins of the charger during the sparking test.

In one embodiment, the electrical contacts 21 specifically comprise: a spring plate 212 connected to the corresponding fixing rod 221, and an electrical contact bump 211 disposed on the spring plate 212. The spring plate 212 is connected to an external power source, and the electric contact bumps 211 are electrically contacted with the pins of the charger. Optionally, the dome 212 is a beryllium bronze dome 212 made of beryllium bronze material and the electrical contact bumps 211 are electrical contact bumps 211 made of platinum material. The vibration of the electromagnetic vibration component 30 drives the two elastic pieces 212 to move at a preset frequency and a preset amplitude, so that the abnormal contact sparking test between the electric contact convex points 211 and the alternating current input pins of the charger to be tested is realized.

Referring to fig. 4 to 6, in one embodiment, the electricity guiding structure 20 further includes a distance adjusting mechanism 24 for adjusting a distance between the two fixing rods 221; at least one fixing rod 221 is provided with an adjusting groove 2211, the distance adjusting mechanism 24 comprises an adjusting block 241 with one end connected to the insulating plate 222 and the other end located in the adjusting groove 2211, and the fixing rod 221 slides along the corresponding adjusting block 241 through the adjusting groove 2211 to adjust the distance between the two fixing rods 221. Specifically, the extending direction of the adjusting groove 2211 is substantially perpendicular to the axial direction of the fixing rod 221, and the fixing rod 221 is moved transversely under the guidance of the adjusting block 241 and the adjusting groove 2211, so as to achieve the purpose of adjusting the distance between the two fixing rods 221. It can be understood that the distance between the two fixing rods 221 can be adjusted, so that the testing device 100 can adapt to the pin arrangement of different regional standards or different products, thereby increasing the application range of the testing device 100.

Optionally, each fixing rod 221 is provided with two adjusting slots 2211, each adjusting slot 2211 is provided with an adjusting block 241 therein, and each adjusting block 241 is arranged corresponding to the corresponding fixing rod 221.

Optionally, the electricity guiding structure 20 further comprises a locking mechanism 23, the locking mechanism 23 is configured to detachably connect the fixing rod 221 and the insulating base after the fixing rod 221 is adjusted in position, and the locking mechanism 23 comprises a locking block 232 abutting against the two fixing rods 221 and a locking bolt 231 for screwing the locking block 232 to the insulating plate 222.

In one embodiment, the electromagnetic vibration component 30 includes: two leaf springs 33 that the interval set up, set up the electro-magnet 31 between two leaf springs 33 and connect one of them leaf spring 33 and can produce the magnetism with electro-magnet 31 and inhale piece 32 of effect of inhaling, the one end of two leaf springs 33 is all fixed to be set up on testing arrangement 100's bottom plate, the other end of two leaf springs 33 all connects and draws electric structure 20, electro-magnet 31 produces periodic electromagnetic field and takes place periodic magnetism with magnetism and inhale piece 32 under electrically conductive state and inhale the effect, move with predetermined frequency in order to drive and draw electric structure 20, thereby with the round pin electrical contact of electronic product.

Specifically, after current is input to the electromagnetic excitation coil of the electromagnet 31 through the control circuit, the excitation coil generates an electromagnetic field, the electromagnetic field changes periodically, the soft magnetic core therein is magnetized, the magnetic core is greatly enhanced, so that the magnetic member moves towards the electromagnet 31, the electricity leading structure 20 moves along with the magnetic core and enables the electric contact piece 21 to be separated from the contact with the pin of the charger, when the excitation coil of the electromagnet 31 is powered off, the magnetism of the electromagnet 31 disappears, the magnetic attraction between the magnetic member and the electromagnet 31 disappears, the electricity leading structure 20 moves away from the electromagnet 31 under the elastic restoring force of the plate spring 33 and enables the electric contact piece 21 to be electrically contacted with the pin of the charger, and the operation is repeated. The vibration frequency of the electromagnetic vibration member 30 is determined by the frequency of the input current, and the vibration amplitude is determined by the magnitude of the current passing through the exciting coil. The vibration frequency and the vibration amplitude of the electromagnetic vibration member 30 are adjusted by adjusting the frequency and the magnitude of the current input to the exciting coil.

Referring to fig. 7 to 10, in one embodiment, the clamping structure 10 includes: the electronic product clamping device comprises a clamping table 11 for clamping an electronic product, a height adjusting mechanism 12 for adjusting the height of the clamping table 11, a first horizontal adjusting mechanism 13 for adjusting the clamping table 11 to move along a first direction, and a second horizontal adjusting mechanism 24 for adjusting the clamping table 11 to move along a second direction, wherein the first direction and the second direction are arranged orthogonally. The height direction of the holding table 11 is perpendicular to a plane defined by the first direction and the second direction. Optionally, in this embodiment, the first direction is a left-right direction, and the second direction is a front-back direction.

The clamping table 11 comprises a clamping base 111 with a containing groove 115, two clamping blocks 112 located in the containing groove 115, two clamping screw rods 113 and two adjusting wheels 114, one end of each of the two clamping screw rods 113 is connected with the two clamping blocks 112, the other end of each of the two clamping screw rods 113 is connected with the two groove walls of the containing groove 115, the two adjusting wheels 114 are connected with the other ends of the two clamping screw rods 113, and the two clamping blocks 112 are driven to move oppositely by rotating the two adjusting wheels 114, so that the charger is clamped between the two clamping blocks 112. Specifically, the clamping table 11 further includes a guiding mechanism for guiding the clamping block 112 to move, the guiding mechanism at least includes two guiding posts 116, two groove walls of the accommodating groove 115 are both provided with guiding holes, one end of each guiding post 116 is located in each guiding hole, and the other end of each guiding post 116 is connected to the corresponding clamping block 112. The guide mechanism further comprises two sliding rails 1111 convexly arranged at the bottom of the accommodating groove 115, the two sliding rails 1111 are arranged at intervals, the two sliding rails 1111 are respectively arranged corresponding to the two clamping blocks 112, and each clamping block 112 is provided with a sliding groove matched with the corresponding sliding rail 1111.

The height adjusting mechanism 12 includes a height screw 122, an upper adjusting nut 121 connected to the height screw 122 and disposed on the lower surface of the clamping seat 111, and a lower adjusting nut disposed on the first horizontal adjusting mechanism 13 and connected to the height screw 122. During adjustment, the upper adjusting nut 121 and the lower adjusting nut 123 are firstly adjusted to be loose, after the height is adjusted to be proper, the upper adjusting nut 121 is screwed upwards, and the lower adjusting nut 123 is screwed downwards, so that fine adjustment of the height is realized.

In one embodiment, the height adjusting mechanism 12 may also be formed by a worm gear transmission manner for easier operation, and the height adjusting mechanism 12 is formed by a height screw 122, a roller, a top nut plate, a worm wheel and the like, and the tooth directions of the worm wheel and the worm are spiral. When the worm is rotated, the rotation of the worm drives the height lead screw 122 to rotate through the worm wheel, so that the top nut plate moves up and down, and the height adjustment is realized.

The first horizontal adjusting mechanism 13 includes a first horizontal base 131, a first sliding table 132 slidably connected to the first horizontal base 131, and a second screw rod 141 having one end connected to the first horizontal base 131 and the other end connected to the first sliding table 132, wherein one end of the first screw rod 133 is threadedly connected to the first sliding table 132. The second screw 141 converts the rotation of the second screw 141 into the linear sliding of the first sliding table 132 along the first direction under the action of the external moment, and finally adjusts the position of the charger along the first direction.

The second horizontal adjusting mechanism 24 includes a second horizontal base 143, a second sliding table 142 slidably connected to the second horizontal base 143, and a third screw rod having one end connected to the second horizontal base 143 and the other end connected to the second sliding table 142, the first horizontal base 131 is connected to the second sliding table 142, and the third screw rod converts the rotation motion of the third screw rod into a linear sliding motion of the second sliding table 142 along the second direction under the action of an external moment, so as to finally adjust the position of the charger along the second direction.

Referring to fig. 10 to 12, in an embodiment, the testing apparatus 100 further includes: an operation panel 60 for setting parameters of the control circuit, wherein a power switch key 65 and a frequency setting area 61 are arranged on the operation panel 60; the power switch key 65 is used for controlling whether the testing device 100 is powered on; the frequency setting area 61 is used for setting a plurality of frequency points, so that the testing device 100 can automatically switch the preset frequency and complete the test.

In one embodiment, the operation panel 60 is further provided with: a time setting area 66 and a movement distance setting area; the time setting area 66 is used for setting the test time of the test apparatus 100; and a moving distance setting region for setting a horizontal moving distance of the charging structure 20.

In one embodiment, the testing apparatus 100 further comprises a box, wherein the holding structure 10, the electricity guiding structure 20, the electromagnetic vibration component 30 and the operation panel 60 are disposed outside the box, and the control circuit is disposed inside the box.

Optionally, an emergency shutdown key 64 is further disposed on the operation panel 60, and the testing device 100 further includes a timing mechanism and a relay protection mechanism.

The timing mechanism consists of two time relays and is used for carrying out working mode control and respectively carrying out intermittent control and test duration control. When the normal/intermittent switch is pressed, the intermittent control mode is activated, and t1 (on time) and t2 (intermittent time) need to be set. After being started, the system runs at time t1, then runs at time t2, and loops until the work is stopped. After the time switch is pressed down, the test duration control mode is started, and the test time t3 needs to be set, namely after the test duration control mode is started, when the test time reaches t3 time, the system considers that the test is finished, and the test is stopped.

The relay protection mechanism includes an ac contactor, a dc relay, and a leakage protector, and the leakage protector is used to protect the testing device 100 or the charger from leakage, overload, or short circuit. After the test device 100 runs and tests, the direct current relay is closed, the alternating current contactor is controlled to be closed, and the electric contact salient point 211 in the alternating current contact abnormal ignition part is connected with a test power supply; when the test device 100 stops the test, the dc relay is turned off, the ac contactor is turned off, and the electric contact bumps 211 in the ac contact abnormality striking part turn off the test power.

Specifically, when the test apparatus 100 is powered on, the system performs a self-test, and performs a test setting in a manual mode or an automatic mode by operating the control panel. And if the mode is the manual mode, setting the frequency and the amplitude. The control of the operation mode time is performed by a time setting section 66, and the time setting section 66 includes an intermittent control setting section 62 and a duration test time setting section 63, for example, setting a duration abnormal firing test time of 10 seconds and an intermittent control time of 5 seconds. If the intermittent mode control switch is turned on, setting intermittent contact abnormal time and intermittent time thereof in the mode; and when the test duration switch is closed, the test can be stopped after the test duration is set. Press the operation button in operating panel 60, control circuit output relay drive signal, relay and protection device relay are closed, the sample switch-on test voltage that awaits measuring, according to setting up the corresponding SPWM signal of parameter output, this signal gets into the vibration of piece 32 is inhaled to electromagnetic vibration part 30 control magnetism to the electricity that drives electric contact piece 21 touches bump 211 vibration, wherein sets up the setting that the district carries out electric contact piece 21 horizontal migration distance through the migration distance, the scope of electric contact piece 21's horizontal migration distance does: 0.2-5 mm, and the test voltage is used for carrying out contact abnormal sparking test through the electric contact salient points 211 and the pins of the charger clamped on the clamping table 11.

If the automatic mode is selected, setting vibration amplitude, testing start-stop frequency, frequency step length and duration of each frequency point, wherein the timing device is invalid in the mode; the control circuit outputs signals according to an automatic test program, the electromagnetic vibration part 30 controls the vibration of the magnetic suction part 32, so that the electric contact piece 21 is driven to vibrate, the electric contact salient point 211 is caused to vibrate, and the test voltage is used for performing contact abnormity ignition test with the pins of the charger clamped on the clamping table 11 through the electric contact salient point 211.

Optionally, the control circuit adopts a Sinusoidal Pulse Width Modulation (SPWM) control mode, which can realize continuous adjustable and adjustable voltage output at a preset frequency of 0-400 Hz, and realize the simulation test of contact abnormality between the electric contact sheet and the electric contact salient point thereof and the charger pin by adjusting the preset frequency and vibration amplitude of the electromagnetic vibration component.

The control circuit comprises a rectification circuit, a filter circuit, an inverter circuit, a microprocessor circuit, a power supply circuit, a display driver, an I/O circuit, a relay driver and the like.

Wherein:

a rectifier circuit: converting a power frequency power supply into pulsating direct current voltage;

a filter circuit: smoothing the pulsating direct-current voltage to supply the inverter circuit for use;

a power supply circuit: outputting +12V and +5V direct current to supply power to the testing device;

I/O circuit: the signal conditioning and transmission between the microprocessor and the key/knob are realized;

driving a relay: used for carrying on the level switching signal amplification to the control signal;

display driving: realizing the decoding drive of the digital display tube;

V/I detection: the device is used for feeding back current and voltage parameters to realize stable closed-loop control of the system, and can play an abnormal protection role when overload and overvoltage occur;

an inverter circuit: under the control of the control microprocessor, converting the direct current power supply into an alternating current power supply with the frequency and the voltage capable of being adjusted at will;

a drive circuit: after isolating and amplifying the PWM signal output by the microprocessor, driving a switching element of an inverter circuit;

a microprocessor circuit: and providing control signals for each module of the main loop, and processing each input signal.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A testing device for performing sparking tests on electronic products, the testing device comprising:

the clamping structure is used for clamping and positioning the electronic product;

the electricity leading structure is used for being in contact with the pins of the electronic product;

an electromagnetic vibration component for driving the electricity-leading structure to move at a preset frequency, an

And the control circuit is used for adjusting the preset frequency and driving the electromagnetic vibration component to vibrate.

2. The test apparatus of claim 1, wherein: the electricity leading structure comprises: the electromagnetic vibration component comprises an insulating seat and two electric contact pieces, wherein the insulating seat is connected with the electromagnetic vibration component and made of an insulating material, and the two electric contact pieces are made of a conductive material and are arranged on the insulating seat at intervals; the two electric contact pieces are connected with an external power supply and are in electric contact with the pins of the electronic product.

3. The test apparatus of claim 2, wherein: the insulating base comprises an insulating plate for fixing with the electromagnetic vibration component and a fixing rod for fixing with the insulating plate; the fixed rods are arranged at intervals, and the two electric contact pieces are respectively connected with the two fixed rods.

4. A test apparatus as claimed in claim 3, wherein: the electric contact specifically includes: the elastic sheet is connected with the corresponding fixing rod, and the electric contact salient point is arranged on the elastic sheet; the elastic sheet is connected with an external power supply, and the electric contact salient point is electrically contacted with the plug pin.

5. A test apparatus as claimed in claim 3, wherein: the electricity leading structure further comprises a distance adjusting mechanism, and the distance adjusting mechanism is used for adjusting the distance between the two fixing rods; at least one of the fixed rods is provided with an adjusting groove, the distance adjusting mechanism comprises an adjusting block, one end of the adjusting block is connected with the insulating plate, the other end of the adjusting block is located in the adjusting groove, and the fixed rods slide along the corresponding adjusting blocks through the adjusting grooves to adjust the distance between the two fixed rods.

6. The test apparatus of claim 1, wherein: the electromagnetic vibration component includes: two plate spring that the interval set up, set up in two electro-magnet between the plate spring and connect one of them plate spring and can with the electro-magnet produces the magnetism piece of inhaling the effect of inhaling, two the one end of plate spring all is fixed to be set up on testing arrangement's bottom plate, two the other end of plate spring all is connected draw electric structure, the electro-magnet produce periodic electromagnetic field under conductive state and with magnetism piece takes place periodic magnetism and inhale the effect, in order to drive draw electric structure with predetermineeing the frequency removal, thereby with the electrical contact is participated in of electronic product.

7. The test device of any one of claims 1-6, wherein: the clamping structure includes: the clamping device comprises a clamping table for clamping the electronic product, a height adjusting mechanism for adjusting the height of the clamping table, a first horizontal adjusting mechanism for adjusting the clamping table to move along a first direction, and a second horizontal adjusting mechanism for adjusting the clamping table to move along a second direction, wherein the first direction and the second direction are orthogonally arranged.

8. The test device of any one of claims 1-6, wherein: the test device further comprises: the operation panel is used for setting parameters of the control circuit and is provided with a power switch key and a frequency setting area; the power switch key is used for controlling whether the testing device is powered on or not; the frequency setting area is used for setting a plurality of frequency points, so that the testing device can automatically switch frequencies and complete testing.

9. The test apparatus of claim 8, wherein: the operation panel is also provided with a time setting area and a moving distance setting area; the time setting area is used for setting the test time of the test device; and the moving distance setting area is used for setting the horizontal moving distance of the electricity leading structure.

10. The test apparatus of claim 1, wherein: the testing device further comprises a box body, wherein the clamping structure, the electricity leading structure, the electromagnetic vibration component and the operation panel are arranged outside the box body, and the control circuit is arranged inside the box body.

Images