CN220043733U - Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument - Google Patents
Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument Download PDFInfo
- Publication number
- CN220043733U CN220043733U CN202320925180.9U CN202320925180U CN220043733U CN 220043733 U CN220043733 U CN 220043733U CN 202320925180 U CN202320925180 U CN 202320925180U CN 220043733 U CN220043733 U CN 220043733U
- Authority
- CN
- China
- Prior art keywords
- knob
- hole
- electromagnetic interference
- connecting piece
- transmission rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 17
- 239000007769 metal material Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses an electrostatic discharge and knob type switch device for an electromagnetic interference measuring instrument, which comprises a metal shell and a knob switch, wherein connecting terminals are respectively arranged at two ends of the metal shell, each connecting terminal comprises a terminal connecting piece, each knob switch comprises a knob mounting seat, a knob handle, a knob transmission rod and a knob connecting piece, a shell through hole is formed in the upper part of the middle section of the metal shell, the knob mounting seat is arranged at a position, close to the shell through hole, in the inner wall of the middle section of the metal shell, of the knob mounting seat, a vertical limit through hole is formed in the knob mounting seat, the knob transmission rod penetrates through the limit through hole and is circumferentially limited, the upper end of the knob transmission rod is connected with the knob handle, the middle part of the knob connecting piece is connected with the lower end of the knob transmission rod, and the knob connecting piece can be respectively communicated with and disconnected with two terminal connecting pieces in the switching operation process of the knob handle. The utility model avoids the problem that the electromagnetic interference measuring instrument is damaged because the static electricity of the human body is not discharged and the electromagnetic interference measuring instrument is powered on or powered off instantaneously.
Description
Technical Field
The present utility model relates to an auxiliary device for an electromagnetic interference measuring instrument, and more particularly, to an electrostatic discharge and knob type switch device for an electromagnetic interference measuring instrument.
Background
Electromagnetic interference measuring instruments are widely used in power systems and electrical systems for testing electromagnetic interference signals generated when various power or electrical lines are powered on. The electromagnetic interference measuring instrument is a high-precision instrument, for example, in order to meet the requirements of conducting emission and electric field radiation emission tests of a test power line in GJB151B-2013, in order to match the frequency (10 k-18 GHz) test frequency of a receiving antenna for electric field radiation emission tests in a laboratory in general, the electromagnetic interference measuring instrument is an electromagnetic interference measuring instrument with the model of ESR26 of the Rode Schvalz company, the test frequency is 10Hz-26.5GHz, the price of a single electromagnetic interference measuring instrument is more than 100 ten thousand yuan, and the highest configuration frequency of the electromagnetic interference measuring instrument is 40GHz or more for the items to be tested for antenna harmonic wave and spurious radiation output radiation emission, and the price of the electromagnetic interference measuring instrument is several million yuan; and the electromagnetic interference measuring instrument is very troublesome to maintain after being damaged, so that strict protection and loving protection are required.
At present, the electromagnetic interference measuring instrument often causes equipment failure in the using process due to two reasons: one is that the equipment is damaged due to the large current generated by instantaneous power-up or instantaneous power-down; and secondly, equipment is damaged due to static electricity of the human body of an operator.
In order to avoid the equipment from being damaged due to the reasons, the traditional method adopted at present is as follows: the method comprises the steps that a grounded electrostatic ball is arranged at a gate of a laboratory, an operator holds the electrostatic ball to discharge human static electricity and then enters the laboratory to operate, but in the experiment, the operator is troublesome to operate and forgets to discharge the static electricity easily, so that equipment is possibly damaged because the human static electricity is not discharged; the signal line port is in butt joint with the tester port after the tested equipment is powered on, and the signal line port is disconnected with the tester port before the tested equipment is powered off, so that the problem that equipment is damaged due to instantaneous power on or instantaneous power off is avoided, but the operation is very troublesome, and the port screw threads are easily damaged due to the butt joint and disconnection of the signal line port and the tester port.
Disclosure of Invention
The present utility model has been made to solve the above problems, and an object of the present utility model is to provide an electrostatic discharge and knob switch device for an electromagnetic interference meter, which can effectively avoid damage of the electromagnetic interference meter and is convenient to operate.
The utility model realizes the above purpose through the following technical scheme:
the utility model provides an electrostatic discharge and knob formula switching device for electromagnetic interference measuring apparatu, includes cylindric metal casing to the central line direction of metal casing is horizontal, the both ends of metal casing are equipped with connecting terminal respectively, connecting terminal include with the metal casing is insulating and be the terminal connecting piece of metal material, electrostatic discharge and knob formula switching device for electromagnetic interference measuring apparatu still includes knob switch, knob switch includes knob mount pad, knob handle, knob transfer line and knob connecting piece, the middle section upper portion of metal casing is equipped with inside and outside communicating shell through-hole, the knob mount pad is located be close to in the middle section inner wall of metal casing the position of shell through-hole and with the metal casing is connected, the knob mount pad is equipped with vertical spacing through-hole and vertical the knob transfer line passes this spacing through-hole and is spacing by circumference, the upper end of knob transfer line with the knob handle is connected, the middle part of metal material the knob connecting piece with the lower extreme of knob transfer line is connected, the knob connecting piece can be in the switching operation of handle in-process respectively with two disconnection terminal and knob connecting piece.
Preferably, in order to facilitate realization of reliable switching function, the knob switch further comprises a knob pressure spring, the upper portion of knob mount pad is equipped with the pressure spring mount pad, the pressure spring mount pad is equipped with vertical installation through-hole, the central line of installation through-hole with the central line coincidence of spacing through-hole just the aperture of installation through-hole is greater than the aperture of spacing through-hole, vertical the knob pressure spring is arranged in the installation through-hole, the knob transfer line passes the knob pressure spring, the lower part opposite both sides of knob handle are equipped with a horizontal bayonet lock respectively, the opposite both sides pore wall of installation through-hole is equipped with a draw-in groove of "L" shape respectively, two the bayonet lock can be when pressing down the knob handle down move respectively get into two in the draw-in groove and can be rotated when the knob handle the draw-in groove blocks can not upwards move, the horizontal both ends of knob connecting piece are in the knob handle is pressed back rotation in-process and are in turn respectively with two the terminal connecting piece intercommunication and are in turn reset respectively with two terminal disconnection pieces respectively.
Preferably, in order to limit the upward movement of the rotary switch, the metal casing is provided with stoppers at positions above two ends of the rotary connector, and the two stoppers are respectively connected with the metal casing and can prevent the rotary connector from continuing to move upward.
Preferably, in order to facilitate installation of the knob pressure spring and facilitate adjustment of the elasticity of the knob pressure spring, a gasket is installed at the bottom of the installation through hole, the outer diameter of the gasket is larger than the aperture of the limiting through hole, the rotary transmission rod penetrates through the center through hole of the gasket, and the gasket is located below the knob pressure spring.
Preferably, in order to be convenient for dock fast with signal line port and tester port, connecting terminal still includes the spiral ring that is equipped with the internal thread, two the spiral ring install respectively in metal casing's both ends and can free rotation and can not break away from metal casing, the terminal connecting piece is contact pin or jack, two the terminal connecting piece passes through insulating material fixed mounting is in the position that is close to both ends in the metal casing. The spiral ring and the terminal connecting piece together form an N-shaped male head or an N-shaped female head in the prior art.
Preferably, in order to facilitate reliable electrical connection with the knob connector, the inner end of the terminal connector is provided with a contact portion protruding outwards for contacting with the knob connector.
Preferably, in order to improve the avoidance of the knob driving rod from conducting electricity on the knob connecting member to the metal casing, the knob driving rod is an insulating rod, and the knob connecting member is connected with the knob driving rod.
Preferably, in order to facilitate grounding of the metal shell, a downward convex metal mounting part is arranged at the lower part of the metal shell, and a connecting through hole is arranged on the metal mounting part.
The utility model has the beneficial effects that:
according to the utility model, the metal shell is designed, the connecting terminals are arranged at the two ends of the metal shell, the knob switch is arranged at the middle section of the metal shell, when the electromagnetic interference measuring instrument is used, the two connecting terminals are respectively connected with the signal wire port and the tester port in a laboratory, the metal shell is connected with the grounding body, an operator naturally holds the metal shell before operation, the purpose of releasing human static electricity can be realized, the electromagnetic interference measuring instrument is not easy to forget and convenient to operate by the operator, and the problem that the electromagnetic interference measuring instrument is damaged due to the fact that the human static electricity is not released is avoided; then after the tested equipment is electrified, the purpose of communicating the signal line port with the tester port can be achieved by operating the knob switch, after the test is finished, the purpose of disconnecting the signal line port from the tester port can be achieved by reversely operating the knob switch, and then the tested equipment is powered off, so that the problem that the electromagnetic interference measuring instrument is damaged due to instantaneous electrification or instantaneous power off is avoided, and the operation is simple and the screw thread cannot be damaged.
Drawings
FIG. 1 is a perspective view of an electrostatic discharge and rotary knob type switch device for an electromagnetic interference measuring instrument according to the present utility model;
FIG. 2 is a second perspective view of the electrostatic discharge and rotary switch device for an electromagnetic interference measuring instrument according to the present utility model, different from the perspective view of FIG. 1;
FIG. 3 is a front view of an electrostatic discharge and rotary knob switch device for an electromagnetic interference meter according to the present utility model;
FIG. 4 is a top view of an electrostatic discharge and rotary knob switch device for an electromagnetic interference meter according to the present utility model;
FIG. 5 is a cross-sectional view A-A of a top view of an electrostatic discharge and rotary knob switch device for an electromagnetic interference meter according to the present utility model;
fig. 6 is an enlarged view of "B" in fig. 5.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1-6, the electrostatic discharge and knob switch device for an electromagnetic interference measuring instrument according to the present utility model comprises a cylindrical metal casing 2 and a knob switch, wherein the central line direction of the metal casing 2 is taken as the transverse direction, two ends of the metal casing 2 are respectively provided with a connection terminal, the connection terminal comprises a terminal connection piece 14 which is insulated from the metal casing 2 and made of metal material, the knob switch comprises a knob mounting seat 3, a knob handle 4, a knob transmission rod 5 and a knob connection piece 17, the upper part of the middle section of the metal casing 2 is provided with a casing through hole (not marked in the figure) which is communicated with the inside and the outside, the knob mounting seat 3 is arranged in the middle section inner wall of the metal casing 2, near the casing through hole, and is connected with the metal casing 2, the knob mounting seat 3 is provided with a vertical limit through hole (not marked in the figure), the vertical knob transmission rod 5 passes through the limit through hole and is limited circumferentially, the upper end of the knob transmission rod 5 is connected with the knob handle 4, the middle part of the knob connection piece 17 made of metal material is connected with the lower end of the knob transmission rod 5, and the knob connection piece 17 can be respectively communicated with the two terminal connection pieces 14 and disconnected in the switching operation of the knob handle 4.
As shown in fig. 1-6, the present utility model also discloses a number of more optimal specific structures:
in order to facilitate reliable switch function, the knob switch still includes knob pressure spring 7, the upper portion of knob mount pad 3 is equipped with pressure spring mount pad 10 (can integrated into one piece between the two, also can interconnect), pressure spring mount pad 10 is equipped with vertical installation through-hole 8, the central line of installation through-hole 8 with the central line coincidence of spacing through-hole and the aperture of installation through-hole 8 are greater than spacing through-hole's aperture, vertical knob pressure spring 7 is arranged in installation through-hole 9, knob transfer lever 5 passes knob pressure spring 7, the lower part of knob handle 4 (be the protruding projection downwards in the figure and the external diameter of this projection is less than the biggest external diameter on knob handle 4 upper portion) opposite both sides are equipped with a horizontal bayonet lock 6 respectively, the opposite both sides pore wall of installation through-hole 8 is equipped with the draw-in groove 9 of an "L" shape respectively, two bayonet lock 6 can move down and get into respectively in the vertical inslot of two draw-in groove 9 when rotating knob handle 4 and can not block upwards by the transverse groove of two draw-in groove 9 when rotating knob handle 4, the transverse both ends of knob connecting piece 17 are in the knob handle 4 and are connected with two terminal 14 and are disconnected respectively after 14 respectively upwards in the rotation of knob handle 4.
In order to limit the upward travel of the rotary switch, stoppers 16 are respectively provided in the metal housing 2 at positions above both ends of the rotary connector 17, and the stoppers 16 are respectively connected with the metal housing 2 and can prevent the rotary connector 17 from continuing to move upward.
In order to facilitate the installation of the knob pressure spring 7 and the adjustment of the elasticity thereof, a gasket 15 is installed at the bottom of the installation through hole 8, the outer diameter of the gasket 15 is larger than the aperture of the limit through hole, the rotary transmission rod 5 passes through the center through hole of the gasket 15, and the gasket 15 is positioned below the knob pressure spring 7.
In order to facilitate quick docking with a signal line port (not shown in the figure, refer to the background art content) and a tester port (not shown in the figure, refer to the background art content), the connecting terminal further comprises a spiral ring 1 provided with an internal thread, the two spiral rings 1 are respectively installed at two ends of the metal shell 2 and can freely rotate and cannot be separated from the metal shell 2, the terminal connecting piece 14 is a pin or a jack, and the two terminal connecting pieces 14 are fixedly installed in the metal shell 2 at positions close to the two ends through insulating materials 13 (such as epoxy resin).
In order to facilitate reliable electrical connection with the knob connector 17, the inner end of the terminal connector 14 is provided with a contact portion 18 protruding outwards for contacting the knob connector 17; the upper and lower parts of the two ends of the knob connecting piece 17 are respectively provided with a convex contact.
In order to improve the protection of the knob transmission rod 5 from the electrical conduction on the knob connection 17 to the metal housing 2, the knob transmission rod 5 is an insulating rod, and the knob connection 17 is connected with the knob transmission rod 5.
In order to facilitate grounding of the metal shell 2, a downward convex metal mounting part 11 is arranged at the lower part of the metal shell 2, a connecting through hole 12 is arranged on the metal mounting part 11, and the metal mounting part 11 and the metal shell 2 can be integrally formed or connected with each other.
When in use, as shown in fig. 1-6, the device is installed in a laboratory (not shown in the figure), is fixedly connected with an indoor grounding body (not shown in the figure) through a connecting through hole 12 on a metal installation part 11, and is mechanically and electrically connected with a signal line port and a tester port respectively through two spiral rings 1 and two terminal connecting pieces 14; after an operator enters a laboratory, the metal shell 2 is naturally held before the test operation, so that the purpose of discharging human static electricity can be realized, the device is not easy to forget by the operator and is convenient to operate, and the problem that the electromagnetic interference measuring instrument is damaged because the human static electricity is not discharged is avoided; then after the tested equipment (not shown in the figure) is electrified, the knob handle 4 is firstly pressed down and then the knob handle 4 is rotated, so that the two clamping pins 6 respectively enter the vertical grooves of the two clamping grooves 9 and then are clamped by the transverse grooves of the two clamping grooves 9 to be incapable of moving upwards, and the purpose of communicating the signal line port with the tester port can be realized; after the test is finished, the knob handle 4 is reversely rotated first and then the knob handle 4 is loosened, under the action of the knob pressure spring 7, the two bayonet locks 6 respectively move upwards and separate from the vertical grooves of the two bayonet locks 9, the purpose of disconnecting the signal line port from the tester port can be achieved, then the tested equipment is powered off, the problem that the electromagnetic interference measuring instrument is damaged due to instantaneous power-on or instantaneous power-off is avoided, the operation is simple, and the screw thread cannot be damaged.
The above embodiments are only preferred embodiments of the present utility model, and are not limiting to the technical solutions of the present utility model, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present utility model.
Claims (8)
1. The utility model provides an electrostatic discharge and knob formula switching device for electromagnetic interference measuring apparatu, includes cylindric metal casing to the central line direction of metal casing is horizontal, the both ends of metal casing are equipped with connecting terminal respectively, connecting terminal include one with the terminal connecting piece of metal casing insulation and for the metal material, its characterized in that: the static electricity discharge and knob type switch device for the electromagnetic interference measuring instrument further comprises a knob switch, the knob switch comprises a knob mounting seat, a knob handle, a knob transmission rod and a knob connecting piece, an outer shell through hole which is communicated with the inside and the outside is formed in the upper portion of the middle section of the metal shell, the knob mounting seat is arranged at the position, close to the outer shell through hole, in the inner wall of the middle section of the metal shell and connected with the metal shell, a vertical limit through hole is formed in the knob mounting seat, the knob transmission rod penetrates through the limit through hole and is circumferentially limited, the upper end of the knob transmission rod is connected with the knob handle, the middle part of the knob connecting piece made of metal materials is connected with the lower end of the knob transmission rod, and the knob connecting piece can be respectively communicated with and disconnected with the two terminal connecting pieces in the switching operation process of the knob handle.
2. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter of claim 1 wherein: the knob switch further comprises a knob pressure spring, the upper portion of the knob mounting seat is provided with a pressure spring mounting seat, the pressure spring mounting seat is provided with a vertical mounting through hole, the center line of the mounting through hole coincides with the center line of the limiting through hole, the aperture of the mounting through hole is larger than that of the limiting through hole, the knob pressure spring is vertical, the knob pressure spring is arranged in the mounting through hole, the knob transmission rod penetrates through the knob pressure spring, two opposite sides of the lower portion of the knob handle are respectively provided with a transverse bayonet lock, the wall of the opposite sides of the mounting through hole are respectively provided with an L-shaped clamping groove, the two bayonet locks can downwards move and respectively enter the two clamping grooves when the knob handle is pressed down, and can not upwards move when the knob handle is rotated, and the two transverse ends of the knob connecting piece are respectively communicated with the two terminal connecting pieces and are respectively disconnected with the two terminal connecting pieces after the knob handle is upwards reset in the rotating process after the knob handle is pressed down.
3. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter of claim 2, wherein: the position in the metal casing that is located knob connecting piece both ends top is equipped with the dog respectively, two the dog respectively with the metal casing is connected and can stop the knob connecting piece continues upward movement.
4. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter of claim 2, wherein: the bottom of the mounting through hole is provided with a gasket, the outer diameter of the gasket is larger than the aperture of the limiting through hole, the knob transmission rod passes through the central through hole of the gasket, and the gasket is positioned below the knob pressure spring.
5. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter according to any of claims 1-4, wherein: the connecting terminal further comprises a spiral ring provided with internal threads, the two spiral rings are respectively installed at two ends of the metal shell and can rotate freely and cannot be separated from the metal shell, the terminal connecting piece is a contact pin or a jack, and the two terminal connecting pieces are fixedly installed at positions, close to the two ends, in the metal shell through insulating materials.
6. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter according to any of claims 1-4, wherein: the inner end of the terminal connecting piece is provided with a contact part which protrudes outwards and is used for being contacted with the knob connecting piece.
7. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter according to any of claims 1-4, wherein: the knob transmission rod is an insulating rod, and the knob connecting piece is connected with the knob transmission rod.
8. The electrostatic discharge and knob switch assembly for an electromagnetic interference meter according to any of claims 1-4, wherein: the lower part of the metal shell is provided with a downward convex metal installation part, and the metal installation part is provided with a connecting through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925180.9U CN220043733U (en) | 2023-04-23 | 2023-04-23 | Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925180.9U CN220043733U (en) | 2023-04-23 | 2023-04-23 | Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220043733U true CN220043733U (en) | 2023-11-17 |
Family
ID=88722650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320925180.9U Active CN220043733U (en) | 2023-04-23 | 2023-04-23 | Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220043733U (en) |
-
2023
- 2023-04-23 CN CN202320925180.9U patent/CN220043733U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8480418B2 (en) | Electrical charger locking assembly | |
| CN112327139A (en) | Chip testing device | |
| CN107907806B (en) | Bus voltage measuring device based on GIS basin-type insulator distributed capacitance | |
| CN107230858B (en) | Spring-touch type sealing electric plug | |
| CN220043733U (en) | Electrostatic discharge and knob type switch device for electromagnetic interference measuring instrument | |
| CN209086301U (en) | The multifunctional combined terminal box of electrical energy measurement | |
| CN205790798U (en) | A kind of circular mixed loading connector socket | |
| CN213989485U (en) | Radio frequency connector | |
| CN220692438U (en) | Elastically-connected radio frequency connector | |
| CN214845614U (en) | Chip testing device | |
| CN206976741U (en) | A kind of F-type connector | |
| CN219998558U (en) | Novel elbow connector | |
| KR20050109274A (en) | A coxial contect probe | |
| CN109085401A (en) | The multifunctional combined terminal box of electrical energy measurement with test fixture | |
| CN215728612U (en) | Test connector and test connector test system thereof | |
| CN109085396A (en) | With the multifunctional combined terminal box of electrical energy measurement for changing table tooling | |
| CN214473867U (en) | Antenna on-site detection device of wireless equipment | |
| CN220289680U (en) | Secondary circuit line inspection frock | |
| CN203551671U (en) | High-frequency electric field probe | |
| CN216979143U (en) | Binding post and instrument convenient to secondary line measurement operation | |
| CN220963821U (en) | Elastic contact electric connector | |
| CN215812913U (en) | Circuit board test connector | |
| CN216624733U (en) | High leakproofness aviation socket | |
| CN216958622U (en) | Straight-isolating connector | |
| CN217444702U (en) | Elbow push-pull connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |