CN219871399U

CN219871399U - Electromagnetic compatibility EMC tester

Info

Publication number: CN219871399U
Application number: CN202320871264.9U
Authority: CN
Inventors: 李芳芳
Original assignee: Shanghai Longtian Testing Technology Co ltd
Current assignee: Shanghai Longtian Testing Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-10-20
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses an electromagnetic compatibility EMC tester, which comprises a tester body, wherein the tester body is connected with an air pressure damping mechanism in a fitting way; the utility model provides a pneumatic shock-absorbing mechanism includes the installing frame, the heat absorption hole, negative pressure fan, the air discharge plate, the flow chamber, the bottom connecting plate, the movable sleeve board, the inside laminating each other of bottom and the installing frame of tester body, the side of heat absorption hole site, negative pressure fan's top and one side bottom fixed connection of installing frame, negative pressure fan's bottom and air discharge plate's top fixed connection, through the pneumatic shock-absorbing mechanism of design, the air discharge plate is when excreteing the air, and the inside of check valve is got into from the inside transport of conveyer pipe to gas can follow to the gas, compares traditional spring shock attenuation, and above-mentioned mode can reduce mechanical friction, and shock attenuation long service life to stability is good, can also adjust tester body height simultaneously, has stronger practicality.

Description

Electromagnetic compatibility EMC tester

Technical Field

The utility model belongs to the technical field of test equipment, and particularly relates to an electromagnetic compatibility EMC tester.

Background

Electromagnetic compatibility is a subject for researching that under the conditions of limited space, time and frequency spectrum resources, various electric equipment can coexist in a broad sense, and the biological equipment does not cause degradation, and comprises two parts of electromagnetic interference and electromagnetic sensitivity, wherein electromagnetic interference test is used for measuring the magnitude of electromagnetic wave signals generated and emitted outwards by tested equipment in a normal working state to reflect the interference intensity of surrounding electronic equipment. The electromagnetic sensitivity test is to measure the interference resistance of the tested equipment to electromagnetic disturbance.

According to Chinese patent CN218240260U, an electromagnetic compatibility EMC tester comprises a tester body stabilizing plate, stabilizing plates are arranged at two ends below the tester body, and the electromagnetic compatibility EMC tester is characterized in that a group of connecting rods are arranged between two sides and the bottom of the tester body and the stabilizing plates, a first sliding block is arranged between two sides of the tester body and the connecting rods, a first sliding groove is arranged at the outer side of the first sliding block, a second sliding block is arranged between the inner side of the first sliding groove, which is close to the first sliding block, and the bottom of the tester body, which is connected with the first sliding block, a second sliding groove is arranged at the outer side of the second sliding block, a third spring is arranged at the two sides, which are close to the second sliding block, of the inner side, which is close to the connecting rods, of the tester body and the fixing plates, a reducer is arranged at the inner side of the stabilizing plates, the bottom of the tester body is provided with a motor, an output shaft of the motor penetrates through the tester body and is connected with fan blades, two sides of the bottom of the tester body, which are close to the motor, are provided with air inlets, two groups of connecting rods are arranged between the stabilizing plates and the tester body through stabilizing plates at two ends below the tester body, one group of connecting rods and one side of the tester body are provided with a first sliding block, a first sliding groove and a second spring, the other group of connecting rods and the bottom of the tester body are provided with a second sliding block, a second sliding groove and a third spring, so that the tester body can buffer vibration generated by the device effectively in the running process, vibration of different directions of the tester can be damped, the vibration generated by the device is effectively reduced due to severe vibration, a plurality of shock absorbers are arranged between the stabilizing plates and the tester body simultaneously, and the vibration generated by the device can be further reduced, avoid the device vibrations too big, produce the problem of damage to the device, be provided with a set of landing leg through the bottom at the stabilizer plate, the bottom of landing leg is provided with the sucking disc, is convenient for guarantee the stability that the device was placed, is difficult to cause to slide, and the inside of landing leg is provided with electric putter simultaneously, is convenient for start electric putter and drives the regulation that the tester body carries out the height, and it is more convenient to use.

The spring damping mechanism is provided with spring damping, the spring is reset and deformed continuously for a long time, so that the toughness of the spring is poor, the spring cannot continue damping, protection cannot be provided for an instrument, the instrument is damaged, and therefore the electromagnetic compatibility EMC tester is provided.

Disclosure of Invention

The utility model aims to provide an electromagnetic compatibility EMC tester, which aims to solve the problems that in the background technology, the mechanism is provided with a spring for damping, and the spring is continuously reset and deformed for a long time, so that the toughness of the spring is poor, the spring cannot continuously damp, the instrument cannot be protected, and damage is caused to the instrument.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an electromagnetic compatibility EMC tester comprises a tester body, wherein the tester body is connected with an air pressure damping mechanism in a fitting way; the air pressure damping mechanism comprises a mounting frame, a heat absorption hole, a negative pressure fan, an exhaust plate, a flow cavity, a bottom connecting plate and a movable sleeve plate, wherein the bottom of the tester body and the inside of the mounting frame are mutually attached, the heat absorption hole is positioned on the side surface of the mounting frame, the top of the negative pressure fan is fixedly connected with the bottom of one side of the mounting frame, the bottom of the negative pressure fan is fixedly connected with the top of the exhaust plate, a conveying pipe is in threaded connection with the side surface of the exhaust plate, a one-way valve is in threaded connection with the bottom of the conveying pipe, the bottom connecting plate is fixedly arranged on the outer wall of the bottom connecting plate and the inside of the movable sleeve plate are movably sleeved, and the flow cavity is positioned on the other side of the bottom of the mounting frame; the movable sleeve plate comprises a built-in cavity, an air bag and a connecting pipe, wherein the built-in cavity is located inside the movable sleeve plate, the air bag is placed inside the built-in cavity, the side face of the air bag is fixedly connected with the inside of the one-way valve, the outer wall of the connecting pipe is fixedly connected with the surface of the air bag, the inner threads of the connecting pipe are connected with a sealing plug, and the air pressure damping mechanism is arranged, so that impact force can be effectively weakened in the working process, and the tester body can be protected.

Preferably, the inside of installing frame has been seted up and has been placed the mouth, the fixed mouth has been seted up to the inside of placing the mouth, the upper surface of fixed mouth and the bottom of tester body laminate each other, can produce the negative pressure through setting up fixed mouth and can be with its tight absorption at the tester body that needs work.

Preferably, the negative pressure mouth has all been seted up around the bottom of installing frame, the outer wall fixedly connected with fixed sleeve of negative pressure mouth, fixed sleeve's inside movable mounting has movable rod, movable rod's bottom fixed mounting has the rubber circle, the flow mouth has been seted up to the inside of rubber circle the installation cavity has been seted up to the inside top both sides of air discharge plate, the inside of installation cavity and the bottom both sides fixed connection of negative pressure fan, the inside intercommunication each other in the top of negative pressure fan and flow cavity can be fixed installing frame in the position that needs work through setting up fixed sleeve, does not need the sucking disc to fix.

Preferably, the fixing opening is communicated with the outer wall of the heat absorption hole and the inside of the flow cavity, and negative pressure can be generated in the working process to tightly adsorb the fixing opening at a position where the working is required by arranging the fixing opening.

Preferably, the installation cavity is internally arranged at the two sides of the top of the exhaust plate, the inside of the installation cavity is fixedly connected with the two sides of the bottom of the negative pressure fan, the top of the negative pressure fan is mutually communicated with the inside of the flow cavity, and the installation cavity is arranged, so that the bottom of the negative pressure fan can be connected to the inside of the exhaust plate in the working process.

Preferably, the inside of connecting pipe has seted up the screw thread mouth, the inside of screw thread mouth and the outer wall threaded connection of sealing plug for can seal its screw thread through the screw thread mode through setting up the sealing plug.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the pneumatic damper who designs, the exhaust plate is when excreteing the air, the inside that the gas can get into the check valve is carried from the inside of conveyer pipe, at this moment utilize the check valve can carry its gas into the inside of gasbag, make the gasbag can expand, and the gasbag can jack-up upward movement with movable sleeve board during the inflation, can stop carrying the air current when the movable sleeve board moves to suitable height, dismantle the conveyer pipe from the inside of exhaust plate and check valve, at this moment utilize the check valve can prevent the air current backward flow, and when the top of installing frame received a downward impact force, utilize the gasbag can weaken decurrent impact force through the gas of inside, thereby can protect the tester body for it, compared traditional spring shock attenuation, the above-mentioned mode can reduce mechanical friction, shock attenuation long service life, and stability is good, can also adjust the tester body height simultaneously, have stronger practicality.

2. Through the heat absorption hole of design, fixed sleeve, fixed port, the tester body can be fixed in the inside of installing the frame, and the heat absorption hole then can be with the inside of the heat suction flow chamber that the tester body produced, and the fixed sleeve of communicating with the negative pressure mouth can produce a suction, leads to the installing the frame to be fixed on the desktop, compares the problem that traditional needs a plurality of mechanisms just can solve, and above-mentioned mechanism can reach multiple effect and effect through the mode of negative pressure.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of the bottom of the retaining sleeve according to the present utility model;

FIG. 3 is a schematic view of the overall structure of the interior of the mounting frame of the present utility model;

FIG. 4 is a schematic view of the overall structure of the bottom of the mounting frame of the present utility model;

fig. 5 is a schematic view of the overall internal structure of the movable sleeve plate according to the present utility model.

In the figure: 1. a mounting frame; 101. a placement port; 102. a fixed port; 2. a heat absorbing hole; 3. a negative pressure fan; 4. an exhaust plate; 5. a flow chamber; 7. a delivery tube; 8. a one-way valve; 9. a bottom connecting plate; 10. a sealing plug; 11. a tester body; 12. fixing the sleeve; 121. a movable rod; 122. a rubber ring; 123. a flow port; 13. a negative pressure port; 14. a movable sleeve plate; 141. a built-in cavity; 142. a connecting pipe; 143. an air bag.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: an electromagnetic compatibility EMC tester comprises a tester body 11, wherein the tester body 11 is connected with an air pressure damping mechanism in a fitting way; the air pressure damping mechanism comprises a mounting frame 1, a heat absorption hole 2, a negative pressure fan 3, an exhaust plate 4, a flow cavity 5, a bottom connecting plate 9, a movable sleeve plate 14, wherein the bottom of a tester body 11 and the inside of the mounting frame 1 are mutually attached, the heat absorption hole 2 is positioned on the side surface of the mounting frame 1, the top of the negative pressure fan 3 is fixedly connected with the bottom of one side of the mounting frame 1, the bottom of the negative pressure fan 3 is fixedly connected with the top of the exhaust plate 4, a conveying pipe 7 is in threaded connection with the side surface of the exhaust plate 4, a one-way valve 8 is in threaded connection with the bottom of the conveying pipe 7, the bottom connecting plate 9 is fixedly arranged on the outer wall of the one-way valve 8, the outer wall of the bottom connecting plate 9 is movably sleeved with the inside of the movable sleeve plate 14, and the flow cavity 5 is positioned on the other side of the bottom of the mounting frame 1; the movable sleeve plate 14 comprises a built-in cavity 141, an air bag 143 and a connecting pipe 142, the built-in cavity 141 is located in the movable sleeve plate 14, the air bag 143 is placed in the built-in cavity 141, the side face of the air bag 143 is fixedly connected with the inside of the one-way valve 8, the outer wall of the connecting pipe 142 is fixedly connected with the surface of the air bag 143, a sealing plug 10 is connected with the inner thread of the connecting pipe 142, a placing port 101 is formed in the inside of the mounting frame 1, a fixing port 102 is formed in the inside of the placing port 101, the upper surface of the fixing port 102 is mutually attached to the bottom of the tester body 11, a placing port 101 is formed in the inside of the mounting frame 1, and the fixing port 102 is formed in the inside of the placing port 101, and the upper surface of the fixing port 102 is mutually attached to the bottom of the tester body 11.

In this embodiment, when the pneumatic damping mechanism is needed during operation, the bottom of the tester body 11 is first sleeved in the fixed port 102, then the negative pressure fan 3 is started, the negative pressure fan 3 is enabled to pump air during the starting process, the flow cavity 5 pumps air into the negative pressure fan 3 and discharges the air from the outer wall of the exhaust plate 4, the internal caliber of the fixed port 102 is smaller than that of the flow cavity 5, when the air flow flows in the flow cavity 5 at a high speed, negative pressure is generated in the fixed port 102, at this time, the negative pressure generates a suction force, at this time, the suction force can tightly fix the tester body 11 in the placing port 101, and the air flow can pump heat generated by the tester body 11 away through the heat absorbing holes 2 formed in the installation frame 1 during the moving process of the air flow from the inside of the flow cavity 5, so that heat dissipation can be facilitated, when vibration reduction is required, the top of the delivery pipe 7 is screwed with the inside of the exhaust plate 4, and the bottom of the delivery pipe 7 is screwed with the inside of the check valve 8, when the exhaust plate 4 is exhausting air, gas is delivered from the inside of the delivery pipe 7 into the inside of the check valve 8, at this time, gas is delivered into the inside of the airbag 143 by the check valve 8, so that the airbag 143 is inflated, the airbag 143 lifts up the movable sleeve plate 14 to move upward when inflated, when the movable sleeve plate 14 moves to a proper height, the delivery of the gas flow can be stopped, the delivery pipe 7 is detached from the inside of the exhaust plate 4 and the check valve 8, at this time, the gas flow back can be prevented by the check valve 8, and when the top of the installation frame 1 is subjected to a downward impact force, the downward impact force can be reduced by the gas through the inside by the airbag 143, so that the tester body 11 can be protected for it.

Specifically, negative pressure mouth 13 has all been seted up around the bottom of installing frame 1, the outer wall fixedly connected with fixed sleeve 12 of negative pressure mouth 13, the inside movable mounting of fixed sleeve 12 has movable rod 121, the bottom fixed mounting of movable rod 121 has rubber circle 122, the inside of rubber circle 122 has been seted up the inside installation cavity of having seted up in the top both sides of flow port 123 air discharge plate 4, the inside in installation cavity and the bottom both sides fixed connection of negative pressure fan 3, the inside intercommunication each other in the top of negative pressure fan 3 and flow cavity 5.

In this embodiment, when the installation frame 1 needs to be fixed in the position that needs to work in the process of working, the fixed sleeve 12 of fixed installation in installation frame 1 bottom is laminated on the desktop, only need start negative pressure fan 3, make the air current can flow at the inside high speed of flow chamber 5, because the internal bore of negative pressure mouth 13 is less than the internal bore of flow chamber 5, so the installation cavity has been seted up to the inside top both sides of negative pressure mouth 13 and the flow mouth 123 air discharge plate 4 of intercommunication, the inside of installation cavity and the bottom both sides fixed connection of negative pressure fan 3, the inside intercommunication of negative pressure fan 3 can produce a suction, the bottom of fixed sleeve 12 is closely adsorbed on the surface, avoid the in-process of working to cause rocking, movable rod 121 is movable cup joint in fixed sleeve 12 inside simultaneously, when the high variation of installation frame 1, movable rod 121 can extend and shrink in fixed sleeve 12's inside, be convenient for adjust.

The theory of operation places tester body 11 in the inside of placing the mouth 101, afterwards start negative pressure fan 3, make negative pressure fan 3 to bleed, and the in-process of bleeding leads to the air current can flow at the inside high speed of flow chamber 5, at this moment the fixed orifices 102 that flow chamber 5 communicates, the heat absorption hole 2, negative pressure mouth 13 all can produce suction, make tester body 11 can be fixed in the inside of installing frame 1, heat absorption hole 2 then can draw the heat that tester body 11 produced into the inside of flow chamber 5, the fixed sleeve pipe 12 that communicates with negative pressure mouth 13 can produce a suction, lead to installing frame 1 to be fixed on the desktop, when needs shock attenuation and height-adjusting, be connected conveyer pipe 7 respectively with exhaust plate 4 and check valve 8, the air current of exhaust plate 4 exhaust is carried into the inside of gasbag 143, make gasbag 143 can be expanded, can let movable sleeve plate 14 upward movement during the inflation, when receiving decurrent impact force, utilize gasbag 143 can effectively be for its shock attenuation, when needs to reduce the height, remove sealing plug 10 from the inside rotation of 142, make the air current can be discharged by the volume, make movable sleeve plate 14 can become small, this can be moved downward.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. Electromagnetic compatibility EMC tester, including tester body (11), its characterized in that: the tester body (11) is connected with an air pressure damping mechanism in a fitting way;

the air pressure damping mechanism comprises a mounting frame (1), a heat absorption hole (2), a negative pressure fan (3), an exhaust plate (4), a flow cavity (5), a bottom connecting plate (9) and a movable sleeve plate (14), wherein the bottom of a tester body (11) and the inside of the mounting frame (1) are mutually attached, the heat absorption hole (2) is positioned on the side surface of the mounting frame (1), the top of the negative pressure fan (3) is fixedly connected with the bottom of one side of the mounting frame (1), the bottom of the negative pressure fan (3) is fixedly connected with the top of the exhaust plate (4), the side surface of the exhaust plate (4) is in threaded connection with a conveying pipe (7), the bottom of the conveying pipe (7) is in threaded connection with a one-way valve (8), the bottom connecting plate (9) is fixedly arranged on the outer wall of the one-way valve (8), the outer wall of the bottom connecting plate (9) is movably sleeved with the inside of the movable sleeve plate (14), and the flow cavity (5) is positioned on the other side of the bottom of the mounting frame (1).

The movable sleeve plate (14) comprises a built-in cavity (141), an air bag (143) and a connecting pipe (142), wherein the built-in cavity (141) is located inside the movable sleeve plate (14), the air bag (143) is placed inside the built-in cavity (141), the side face of the air bag (143) is fixedly connected with the inside of the one-way valve (8), the outer wall of the connecting pipe (142) is fixedly connected with the surface of the air bag (143), and a sealing plug (10) is connected with the internal thread of the connecting pipe (142).

2. An electromagnetic compatibility EMC tester according to claim 1, wherein: the inside of installing frame (1) has been seted up and has been placed mouth (101), place the inside of mouth (101) and have been seted up fixed mouth (102), the upper surface of fixed mouth (102) and the bottom of tester body (11) laminating each other.

3. An electromagnetic compatibility EMC tester according to claim 1, wherein: negative pressure mouth (13) have all been seted up around the bottom of installing frame (1), the outer wall fixedly connected with fixed bolster (12) of negative pressure mouth (13), the inside movable mounting of fixed bolster (12) has movable rod (121), the bottom fixed mounting of movable rod (121) has rubber circle (122), flow mouth (123) have been seted up to the inside of rubber circle (122), the inside installation cavity of having seted up in top both sides of air discharge plate (4), the inside in installation cavity and the bottom both sides fixed connection of negative pressure fan (3), the inside intercommunication each other in the top of negative pressure fan (3) and flow chamber (5).

4. An electromagnetic compatibility EMC tester according to claim 1, wherein: the inside of connecting pipe (142) has offered the screw thread mouth, the inside of screw thread mouth and the outer wall threaded connection of sealing plug (10).

5. An electromagnetic compatibility EMC tester according to claim 2, wherein: the fixed port (102) and the outer wall of the heat absorbing hole (2) are communicated with the inside of the flow cavity (5).

6. An electromagnetic compatibility EMC tester according to claim 1, wherein: the air exhaust plate is characterized in that an installation cavity is formed in the two sides of the top of the air exhaust plate (4), the inside of the installation cavity is fixedly connected with the two sides of the bottom of the negative pressure fan (3), and the top of the negative pressure fan (3) is communicated with the inside of the flow cavity (5).