CN210803544U

CN210803544U - Circuit board structure convenient for oscilloscope measurement

Info

Publication number: CN210803544U
Application number: CN201921754477.3U
Authority: CN
Inventors: 朱黎丽; 解晓军
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-19
Anticipated expiration: 2029-10-18

Abstract

The utility model provides a circuit board structure convenient for oscilloscope measurement, which comprises a circuit board main body, a component to be measured arranged on the circuit board main body and a fixed base fixed on the circuit board main body, wherein a vertical contact plate electrically connected with a test pin of the component to be measured is detachably arranged on the fixed base; the upper surface of the fixed base is also provided with a sliding chute, the bottom of the sliding chute is detachably provided with a transverse contact plate which is electrically connected with a grounding pin of the element to be tested, the transverse contact plate extends along the length direction of the sliding chute, and a metal clamping seat which is contacted with the transverse contact plate is slidably arranged in the sliding chute; and the fixed base is also provided with a supporting seat which is positioned at one end of the transverse contact plate far away from the vertical contact plate. The utility model discloses a vertical contact plate can increase the area of contact with the probe and can avoid the easy impaired problem of test foot of the element that awaits measuring, through the applicable oscilloscope probe in different specification models of gliding metal grip slipper and then promote the suitability.

Description

Circuit board structure convenient for oscilloscope measurement

Technical Field

The utility model relates to an electrical variable measures the field, concretely relates to circuit board structure convenient to oscilloscope measurement.

Background

An oscilloscope is an instrument for measuring the shape of an alternating current or pulsed current wave, and is composed of a tube amplifier, a scanning oscillator, a cathode ray tube, and the like. The oscilloscope can be used for observing the waveform of the current, and measuring the frequency, the voltage intensity and the like, so that the periodic physical process which can become the electrical effect can be observed by the oscilloscope. In electronic course teaching, it is also necessary to demonstrate the using method of the oscilloscope or to show some performances of the electronic product through the oscilloscope, such as testing and analyzing the ripple noise of the power supply through the oscilloscope, and the traditional measuring method is as follows: the probe of the oscilloscope probe is contacted with the anode pin of the output capacitor of the power supply, and the ground clamp of the oscilloscope probe is clamped on the grounding pin of the output capacitor. However, the physical structure of the probe of the conventional oscilloscope influences the detection result, and particularly, if the ground wire is too long, circulation current is caused, so that high-frequency noise interference is generated.

Based on this, the patent application with application number CN2019208153817 provides a fixing device for an oscilloscope probe, which comprises a probe head and a circuit board, wherein the probe head comprises an insulating main body, a probe arranged at the front end of the insulating main body and a grounding part arranged at the rear part of the probe; the circuit board is provided with a to-be-tested element, a test end, a first guide seat and a second guide seat which are sequentially arranged and electrically communicated with the to-be-tested element; the first guide seat is provided with a metal layer and a first fixing structure for limiting the probe grounding part; the metal layer is electrically communicated with a grounding end arranged on the circuit board; the second guide seat is higher than the first guide seat; the second guide seat is provided with an inclined plane which inclines along the direction from the second guide seat to the first guide seat and a second fixing structure which is arranged on the inclined plane and used for limiting the probe insulation main body; the insulating main body is arranged along the inclined plane, so that the probe passes through the upper part of the first guide seat and is contacted with the test end. The grounding part of the probe is connected to the grounding end on the circuit board through the first guide seat, so that the problem of circulating current interference generated by the length of the ground wire of the probe is prevented; and the second guide seat is higher than the first guide seat to enable the rear end of the probe to tilt upwards, so that the probe at the front end of the probe points to the end to be tested of the element to be tested and is abutted against the end to be tested, and therefore testing is achieved. However, the above prior art has the following drawbacks: firstly, metal pins of an electronic component to be tested are often thin, probes of an oscilloscope probe are also thin, in the teaching process, frequent use can cause the pins of the component to be tested to be easily deformed and even damaged due to friction or extrusion of the oscilloscope probe, if the test pins of the component to be tested deform, the probes of the probe cannot be exactly abutted and contacted with the test pins of the component to be tested, and once the test pins of the component to be tested are damaged, the whole circuit board needs to be replaced; in addition, because the oscilloscope has various models and sizes, the oscilloscope can not be ensured to be contacted with the test pin of the element to be tested when being arranged on the two guide bases.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a circuit board structure convenient to oscilloscope measurement, the pin of the component that awaits measuring among its aim at solution prior art is deformed easily and is damaged and the unable fine problem that is applicable to various model oscilloscopes of being applicable to.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a circuit board structure convenient to oscilloscope measurement, its contains the circuit board main part, sets up the element that awaits measuring in the circuit board main part and fixes the fixed baseplate in the circuit board main part, wherein:

the fixed base is detachably provided with a vertical contact plate which is electrically connected with the test pin of the element to be tested;

the upper surface of the fixed base is also provided with a sliding chute, the bottom of the sliding chute is detachably provided with a transverse contact plate which is electrically connected with a grounding pin of the element to be tested, the transverse contact plate extends along the length direction of the sliding chute, and a metal clamping seat which is in contact with the transverse contact plate is slidably arranged in the sliding chute;

and the fixed base is also provided with a supporting seat which is positioned at one end of the transverse contact plate far away from the vertical contact plate.

Compared with the prior art, the utility model discloses following beneficial effect has: the vertical contact plate is used for being in contact with a probe of an oscilloscope probe, so that on one hand, the contact area with the probe can be increased, and on the other hand, the problem that the test pin of the element to be tested is easy to damage can be avoided; the metal clamping seat is used for clamping the annular grounding part of the oscilloscope probe, and can be suitable for the oscilloscope probes with different specifications and models due to the sliding property, so that the applicability is wider; the supporting seat is used for supporting the insulating main body of the oscilloscope probe, and the stability of the probe is ensured.

Drawings

FIG. 1 is a schematic structural view of the utility model in use;

fig. 2 is a side view of the fixing base according to the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1-2, the utility model provides a circuit board structure convenient to oscilloscope measurement, it contains circuit board main part 10, sets up the element 11 that awaits measuring on circuit board main part 10 and fixes fixed baseplate 20 on circuit board main part 10, wherein:

the fixed base 20 can be installed on the circuit board main body 10 in a bolt or screw fixing manner, the fixed base 20 is detachably installed with a vertical contact plate 21 electrically connected with the test pin 12 of the element to be tested 11, so that the contact area with the probe 91 of the oscilloscope probe 90 is increased, and the problem that the test pin 12 is easily deformed or damaged due to the direct contact between the probe 91 and the test pin 12 of the element to be tested 11 can be avoided;

the upper surface of the fixed base 20 is further provided with a sliding chute 22, a transverse contact plate 23 electrically connected with a grounding pin of the device to be tested 11 is detachably mounted at the bottom of the sliding chute 22, the transverse contact plate 23 extends along the length direction of the sliding chute 22, and a metal clamping seat in contact with the transverse contact plate 23 is slidably mounted in the sliding chute 22; the metal holder is used for holding the annular grounding part 92 of the oscilloscope probe 90, and can be suitable for the oscilloscope probes 90 with different sizes because the metal holder can slide;

the fixed base 20 is further provided with a support seat located at one end of the transverse contact plate 23, which is far away from the vertical contact plate 21, and the support seat can be used for supporting an insulating main body of the oscilloscope probe 90, so that the stability of installation of the oscilloscope probe 90 is ensured.

Specifically, a first metalized through hole 13 and a second metalized through hole 14 are arranged on the circuit board main body 10, wherein the first metalized through hole 13 is electrically connected with the test pin 12 of the element to be tested 11 through a circuit board trace 29, and the second metalized through hole 14 is electrically connected with the grounding end of the circuit board through a circuit board trace; a first mounting hole coaxial and communicated with the first metalized through hole 13 is formed in the fixed base 20, and a second mounting hole coaxial and communicated with the second metalized through hole 14 is formed in the bottom of the sliding groove 22; the vertical contact plate 21 is mounted in the first mounting hole through a first connecting column fixedly connected with the vertical contact plate and is electrically contacted with the first metalized through hole 13, and the transverse contact plate 23 is mounted in the second mounting hole through a second connecting column fixedly connected with the horizontal contact plate and is electrically contacted with the second metalized through hole 14. Through setting up two metallization through-holes, and vertical contact board 21 and horizontal contact board 23 insert metallization through the spliced pole respectively and realize the electric contact for vertical contact board 21 and horizontal contact board 23 are dismantled or are installed all very conveniently.

Preferably, the cross section of the sliding groove 22 is in an inverted T shape, the metal clamping seat comprises a sliding block 24 in an inverted T shape and a first V-shaped clamp 25 fixed on the sliding block 24, and both the sliding block 24 and the V-shaped clamp are made of metal; the supporting seat comprises a fixed block 26 fixed at one end of the sliding chute 22 far away from the vertical contact plate 21 and a second V-shaped clamp 27 fixed on the fixed block 26, wherein the first V-shaped clamp 25 and the second V-shaped clamp 27 are both formed by bending elastic metal sheets to form an elastic V-shaped structure, and both the fixed block 26 and the second V-shaped clamp 27 can be fixed in the sliding chute 22 through screws. Because the sliding groove 22 and the sliding block 24 are in the shape of an inverted T, the metal clamping seat can be prevented from being separated from the sliding groove 22 when sliding; by fixing the support at the end of the slide 22, the slider 24 is prevented from slipping out of the slide 22 over a long distance.

Preferably, the vertical contact plate 21 is provided with a limiting hole 28, and the limiting hole 28 is conical, truncated cone-shaped or hemispherical, and the limiting hole 28 can limit the probe 91 of the oscilloscope probe 90, so that the contact surface of the oscilloscope probe is increased, and the oscilloscope probe can be suitable for the insertion of the probe 91 from different angles.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a circuit board structure convenient to oscilloscope measurement which characterized in that contains the circuit board main part, sets up the element that awaits measuring in the circuit board main part and fixes the fixed baseplate in the circuit board main part, wherein:

2. The circuit board structure for facilitating oscilloscope measurements according to claim 1, wherein: the circuit board main body is provided with a first metalized through hole and a second metalized through hole, wherein the first metalized through hole is electrically connected with a test pin of the element to be tested through a circuit board wire, and the second metalized through hole is electrically connected with a grounding end of the circuit board through the circuit board wire; a first mounting hole which is coaxial and communicated with the first metalized through hole is formed in the fixed base, and a second mounting hole which is coaxial and communicated with the second metalized through hole is formed in the bottom of the sliding chute; the vertical contact plate is installed in the first installation hole through a first connecting column fixedly connected with the vertical contact plate and electrically contacted with the first metalized through hole, and the transverse contact plate is installed in the second installation hole through a second connecting column fixedly connected with the transverse contact plate and electrically contacted with the second metalized through hole.

3. The circuit board structure for facilitating oscilloscope measurements according to claim 1, wherein: the cross section of the sliding groove is in an inverted T shape, the metal clamping seat comprises an inverted T-shaped sliding block and a first V-shaped clamp fixed on the sliding block, and the sliding block and the V-shaped clamp are made of metal.

4. A circuit board structure for facilitating oscilloscope measurements according to claim 3, wherein: the supporting seat comprises a fixing block fixed at one end of the sliding groove far away from the vertical contact plate and a second V-shaped clamp fixed on the fixing block.

5. The circuit board structure for facilitating oscilloscope measurements according to claim 1, wherein: the vertical contact plate is provided with a limiting hole which is conical, truncated cone-shaped or hemispherical.