CN117233437B - Circuit detection device based on clamping type contact - Google Patents
Circuit detection device based on clamping type contact Download PDFInfo
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- CN117233437B CN117233437B CN202311516434.2A CN202311516434A CN117233437B CN 117233437 B CN117233437 B CN 117233437B CN 202311516434 A CN202311516434 A CN 202311516434A CN 117233437 B CN117233437 B CN 117233437B
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000000670 limiting effect Effects 0.000 claims description 46
- 238000004804 winding Methods 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000001125 extrusion Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The utility model relates to the technical field of circuit detection, in particular to a circuit detection device based on clamping type contact. The voltmeter comprises a voltmeter body, wherein the end parts of the positive pole and the negative pole of the voltmeter body are respectively connected with a clamping contact connection structure, the clamping contact connection structure at least comprises a spacing adjusting frame, two symmetrical clamping frames are arranged in the spacing adjusting frame in a sliding mode, the inner walls of the clamping frames are provided with electric connection components for contacting the positive pole and the negative pole of the voltmeter body to realize electric connection between an external circuit and the voltmeter body, and the edges of the surfaces of the two clamping frames, which are opposite, are respectively provided with an inflatable sealing bag. The inflatable sealing bag is inflated to form a closed space, external contact is blocked, false contact and electric shock caused by electrifying a circuit in the detection process are avoided, safety is improved, the connection strength of the clamping frame and the positive electrode and the negative electrode of the voltmeter body is improved, meanwhile, when the voltmeter is not used, the electric connection group is separated from external air, corrosion of the electric connection assembly is reduced, the electric connection assembly is protected, and the service life is prolonged.
Description
Technical Field
The utility model relates to the technical field of circuit detection, in particular to a circuit detection device based on clamping type contact.
Background
The circuit is a conductive loop formed by metal wires and electric and electronic components, when the circuit is formed, voltage and current of the circuit are usually measured by means of a voltmeter or an ammeter, because the electrified conductor can flow current, when the voltmeter is used for measuring the voltage of a certain power supply, the voltmeter is connected to the positive and negative of the power supply, or the voltage at two ends of a certain resistor is measured and connected to two ends of the resistor, so that the current flows through the voltmeter, a deflection coil of the voltmeter has current flowing, and because a magnetic field exists around the electrified conductor, the magnetic field interacts with a magnet in the voltmeter to generate deflection, the larger the current is, that is, the higher the voltage is, the larger the deflection is, the relation reflects the voltage, and a plurality of circuit detection devices exist in the prior art, for example: according to the Chinese patent application number: CN202222307105.4 discloses a wiring structure of a digital voltmeter, which belongs to the field of wiring of digital voltmeters. The utility model relates to a wiring structure of a digital voltmeter, which comprises a voltmeter device shell, wherein a data display screen is arranged on one side of the front end of the voltmeter device shell; the inside of two the first horizontal slip rail all is provided with first transmission threaded rod, the outside one side of first transmission threaded rod and second transmission threaded rod all is provided with the transmission ring, the upper end of transmission ring is provided with first restriction grip block. The utility model solves the problems that the existing cable is easy to pull, collide and adhere to external peculiar smell, which causes power transmission failure and inaccurate detection effect, and the friction coefficient between the cable and the device is improved by clamping, so that the cable connecting end and the cable fixing bolt are prevented from falling off due to pulling, and the stability of cable connection and the accuracy of detection values are improved;
above-mentioned wiring through the mode of centre gripping, the detection accuracy of voltmeter has been improved in the drop of reducing the cable link, but prior art carries out the centre gripping with cable link and voltmeter positive and negative pole and is connected, the chuck with external circuit electric connection exposes in the external world, not only easily by external impurity pollution, influence the contact effect, and if external circuit voltage is great, easily lead to the user to touch and cause electric shock, the security is low, simultaneously, the conductive structure of the chuck link of circuit is mostly conductive metal, the metal exposes in the air easily appears the corrosion for a long time, contact failure when leading to follow-up and voltmeter positive and negative pole to be connected and detect voltage, influence life, in view of this, we propose circuit detection device based on centre gripping formula contact.
Disclosure of Invention
The present utility model is directed to a circuit detection device based on clamp contact, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above object, the present utility model provides a circuit detection device based on clamping contact, comprising a voltmeter body for detecting circuit voltage, wherein the positive and negative ends of the voltmeter body are all connected with clamping contact connection structures, the clamping contact connection structures at least comprise a spacing adjusting frame, two symmetrical clamping frames are slidably arranged in the spacing adjusting frame, and the inner wall of the clamping frame is provided with an electrical connection assembly for electrically connecting an external circuit with the voltmeter body in contact with the positive and negative poles of the voltmeter body, wherein:
the two opposite surface edges of the clamping frames are respectively provided with an inflatable sealing bag, the two clamping frames gather inwards, the electric connection assembly extrudes and slides into the clamping frames, the two inflatable sealing bags are driven to expand under the atmospheric pressure to form a closed space, and the electric connection assembly and the positive electrode and negative electrode connection part of the voltmeter body are positioned in the closed space.
As the further improvement of this technical scheme, piston chamber and gas-supply chamber have been seted up to the holder inside, electric connection subassembly slides inside the piston chamber, the sealed bag outer wall intercommunication of inflation is equipped with communicating pipe, just communicating pipe tip stretches into the inside intercommunication setting of gas-supply chamber, wherein:
and a through hole is communicated between the piston cavity and the inner cavity of the gas transmission cavity.
As a further improvement of the technical scheme, the electric connection assembly at least comprises a conductive patch, the end part of the conductive patch is fixedly connected with a movable plate, the end part of the movable plate penetrates through the surface of the clamping frame and stretches into the piston cavity, the end part of the movable plate is connected with a piston plate which is used for sealing and sliding in the piston cavity, and an attaching elastic piece is fixedly connected between the surface of the piston plate and the end part of the inner cavity of the piston cavity.
As a further improvement of this technical scheme, interval adjustment frame inner chamber is equipped with the interval drive assembly who is used for driving the holder motion, interval drive assembly is at least including sliding two symmetrical sliding plates inside the interval adjustment frame and rotate two symmetrical transmission lead screws in interval adjustment frame top recess, two sliding plate tip and two holder tip fixed connection, transmission lead screw outer wall with sliding plate tip screw-thread fit connection, wherein:
the top of the interval adjusting frame is rotatably provided with a rotating rod, and three bevel gears which are vertically meshed are arranged between the rotating rod and the end parts of the two transmission screw rods.
As a further improvement of the technical scheme, one end of the sliding plate is penetrated with a cable, one end of the cable is electrically connected with the conductive patch when the cable is electrified, and the other end of the cable is connected with an external circuit.
As a further improvement of the technical scheme, the two opposite surfaces of the clamping frames are provided with arc-shaped notches, and the conductive patch is arc-shaped and plate-shaped in adaptation with the anode and the cathode of the voltmeter body.
As a further improvement of the technical scheme, the top of the clamping frame is provided with a cable winding component, the cable winding component comprises a supporting disc fixed at the top of one clamping frame and a limiting disc fixed at the top of the other clamping frame, the top of the supporting disc is rotationally provided with a winding rod for winding a winding cable, and when the two clamping frames are gathered inwards, the supporting disc is attached to the limiting disc in a fit manner, so that the limiting disc is used for limiting the rotation of the winding rod.
As a further improvement of the technical scheme, two symmetrical grooves are formed in the outer wall of the winding rod, an extrusion disc is adaptively and slidably arranged on the outer wall of the winding rod, an extrusion elastic piece is fixedly connected between the bottom of the extrusion disc and the end part of the inner cavity of the grooves, and the extrusion elastic piece is used for generating stretching resilience force when the cable is wound on the outer wall of the winding rod, so that the extrusion disc extrudes the cable downwards.
As a further improvement of the technical scheme, a plurality of limit grooves are formed in the position, close to the end portion, of the winding rod, a plurality of sliding cavities are formed in the inner wall of the limit disc, limiting convex plates are arranged in the sliding cavities in a sliding mode, compression springs are fixedly connected between the end portions of the limiting convex plates and the inner cavity end portions of the sliding cavities, and the end portions of the limiting convex plates are matched with the limit grooves.
Compared with the prior art, the utility model has the beneficial effects that:
1. in this circuit detection device based on centre gripping formula contact, through being located the voltmeter body positive and negative pole between two holders, make the holder inwards gather together, electric connection subassembly laminating positive and negative pole realizes that external circuit and voltmeter body electric connection detect, make electric connection subassembly slide into inside the holder, drive the inflation sealed bag inflation and form the enclosure space, electric connection subassembly and voltmeter body positive and negative pole junction are located inside the enclosure space, separate external contact, avoid the circuit circular telegram to cause the mistake to touch the electric shock in the testing process, improve the security.
2. In this circuit detection device based on centre gripping formula contact, when the inflation sealed bag is inflated, under the elasticity effect of inflation sealed bag, extrude voltmeter body positive and negative pole between two inflation sealed bags, improve the joint strength of holder and voltmeter body positive and negative pole, can reduce the possibility that electric connection subassembly breaks away from, improve the stability of detection circuit voltage.
3. In this circuit detection device based on centre gripping formula contact, outwards diffuse through two holders, realize that voltmeter body positive and negative pole leaves from electric connection subassembly surface and outage, and conveniently dismantle, and make two holders gather together once more, drive the sealed bag of inflatable and form enclosure, make electric connection subassembly be located inside the enclosure, separation outside air's moisture can reduce electric connection subassembly corrosion, simultaneously, can protect electric connection subassembly, improvement life.
4. According to the circuit detection device based on the clamping type contact, the long cables are tidied by winding the cables on the outer wall of the winding rod, the cables can be loosened when the winding rod rotates within a certain distance, and the voltmeter body is connected with an external circuit;
and when two holders are gathered together inwards, the voltage detection of the circuit is ready to be carried out, and at the moment, the two holders drive the supporting disc and the limiting disc to be gathered together inwards, so that the limiting disc is attached to the outer wall of the winding rod, and the winding rod cannot be easily rotated through friction resistance between the limiting disc and the outer wall of the winding rod, so that the length of a cable is limited during detection.
Drawings
FIG. 1 is a schematic diagram of the overall structure assembly of the present utility model;
FIG. 2 is a schematic view of a clamp contact connection of the present utility model;
FIG. 3 is a schematic view of the clamp contact connection of the present utility model;
FIG. 4 is an assembled cutaway view of the clamping frame and electrical connection assembly of the present utility model;
FIG. 5 is a schematic view of a clamping frame according to the present utility model;
FIG. 6 is a schematic view of an electrical connection assembly according to the present utility model;
FIG. 7 is an exploded view of the pitch drive assembly of the present utility model;
FIG. 8 is a structural exploded view of the cable reel assembly of the present utility model;
FIG. 9 is a cross-sectional view of the winding rod and squeeze plate construction of the present utility model;
fig. 10 is a cut-away view of the spacing disc structure of the present utility model.
The meaning of each reference sign in the figure is:
100. a voltmeter body;
200. clamping the contact connection structure; 210. a spacing adjusting frame; 211. a pitch drive assembly; 2111. a sliding plate; 2112. a cable; 2113. a transmission screw rod; 2114. a rotating rod; 2115. bevel gears; 212. a clamping frame; 213. a piston chamber; 214. an air delivery chamber; 215. a through hole; 220. an electrical connection assembly; 221. a conductive patch; 222. a movable plate; 223. a piston plate; 224. attaching an elastic piece; 230. inflating the sealing bag; 231. a communicating pipe; 240. a cable take-up assembly; 241. a support plate; 242. a limiting disc; 243. a winding rod; 2430. slotting; 244. an extrusion plate; 2440. extruding the elastic piece; 245. a limit groove; 246. a limiting convex plate; 2460. a compression spring; 247. a sliding cavity.
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.
The circuit is a conductive loop formed by metal wires and electric and electronic components, voltage and current of the circuit are usually measured by means of a voltmeter or an ammeter when the circuit is formed, the electrified conductor can flow current, when the voltmeter is used for measuring the voltage of a certain power supply, the voltmeter is connected to the positive and negative of the power supply, or the voltage at two ends of a certain resistor is measured and connected to the two ends of the resistor, so that the current flows through the voltmeter, a deflection coil of the voltmeter has current flowing, and due to the magnetic field around the electrified conductor, the magnetic field interacts with a magnet in the voltmeter to generate deflection, the larger the current is, namely the higher the voltage is, the larger the deflection is, and the relation reflects the voltage;
the existing mode through the centre gripping is wired, reduce the drop of cable link, has improved the detection accuracy of voltmeter, but when the prior art carries out centre gripping connection with the cable link and voltmeter positive and negative pole, the chuck of electric connection with external circuit exposes in the external world, not only easily by external impurity pollution, influence the contact effect, and if the external circuit voltage is great, easily lead to the user to touch and cause the electric shock, the security is low, simultaneously, the conductive structure of the chuck link of circuit is mostly conductive metal, the metal exposes in the air for a long time and easily appears the corrosion, lead to follow-up contact failure when connecting with the positive and negative pole of voltmeter and detecting the voltage, influence life;
referring to fig. 1-10, the present embodiment provides a circuit detection device based on clamping contact, including a voltmeter body 100 for detecting a circuit voltage, where the working principle is as known in the art, a current flows through the voltmeter, a deflection coil of the voltmeter has a current flowing through it, and a magnetic field exists around a current conductor, and the magnetic field interacts with a magnet in the voltmeter to generate deflection, the larger the current is, that is, the higher the voltage is, the larger the deflection is, the relationship reflects the magnitude of the voltage, and the positive and negative ends of the voltmeter body 100 are connected with clamping contact connection structures 200, the clamping contact connection structures 200 at least include a spacing adjusting frame 210, two symmetrical clamping frames 212 are slidably disposed in the spacing adjusting frame 210, and an electrical connection assembly 220 for electrically connecting an external circuit with the voltmeter body 100 is disposed on the inner wall of the clamping frame 212, where:
the two clamping frames 212 are respectively provided with an inflatable sealing bag 230 at opposite surface edges, the two clamping frames 212 are gathered inwards, the electric connection assembly 220 is extruded and slides into the clamping frames 212, the two inflatable sealing bags 230 are driven to expand under the atmospheric pressure to form a closed space, the connection part of the electric connection assembly 220 and the positive electrode and the negative electrode of the voltmeter body 100 is positioned in the closed space, the electric connection part 220 electrically connected with an external circuit is considered to be exposed outside, the contact effect is influenced by the external impurities, and if the external circuit voltage is larger, the contact is easily caused by the touch of a user, the electric shock is low in safety, therefore, as shown in fig. 2, the clamping frames 212 are gathered inwards, the electric connection assembly 220 is attached to the positive electrode and the negative electrode of the voltmeter body 100 to realize the detection, and simultaneously, the electric connection assembly 220 is slid into the clamping frames 212 to drive the inflatable sealing bags 230 to expand to form the closed space, the connection part of the electric connection part 220 and the positive electrode and the negative electrode of the voltmeter body 100 is positioned in the closed space, the contact of the external circuit is prevented from being caused in the closed space, and the contact of the external circuit is prevented from being caused in the process of the contact in the process of the detection, and the electric shock safety is improved;
in addition, when the inflatable sealing bags 230 are inflated, the positive and negative poles of the voltmeter body 100 are extruded between the two inflatable sealing bags 230 under the action of the elasticity of the inflatable sealing bags 230, so that the connection strength of the clamping frame 212 and the positive and negative poles of the voltmeter body 100 is improved, the possibility that the electric connection assembly 220 is separated can be reduced, and the stability of the voltage of the detection circuit is improved;
meanwhile, the conductive structure of the connecting end of the cable is mainly conductive metal, rust is easy to occur when the metal is exposed in the air for a long time, so that poor contact is caused when the voltage is detected when the metal is connected with the anode and the cathode of the voltmeter, and the service life is influenced.
On the basis of the above, the structure is specifically disclosed, as shown in fig. 1-7, in order to realize that two clamping frames 212 gather inwards, an electric connection component 220 extrudes the positive pole and the negative pole of the voltmeter body 100 and slides into the clamping frames 212, as shown in fig. 4-5, a piston cavity 213 and a gas transmission cavity 214 are formed in the clamping frames 212, the electric connection component 220 slides in the piston cavity 213, a communicating pipe 231 is communicated with the outer wall of the inflatable sealing bag 230, and the end part of the communicating pipe 231 extends into the gas transmission cavity 214 to be communicated with each other, wherein:
through holes 215 are formed in the inner cavities of the piston cavity 213 and the gas transmission cavity 214 in a communicated mode, the inside of the piston cavity 213 is sealed and extruded through the electric connection assembly 220, air in the piston cavity 213 is extruded into the gas transmission cavity 214 through the through holes 215 under the atmospheric pressure, and accordingly gas enters the inflatable sealing bags 230 through the communicating pipes 231 to be inflated, the inflatable sealing bags 230 are inflated, and the sealing effect that the two inflatable sealing bags 230 are inflated to form a closed space when being close to each other is good.
On the basis of the above, please refer to fig. 6, the specific structure of the electric connection assembly 220 is disclosed, so that the electric connection assembly 220 at least comprises a conductive patch 221, the end of the conductive patch 221 is fixedly connected with a movable plate 222, the end of the movable plate 222 penetrates through the surface of the clamping frame 212 and stretches into the piston cavity 213, the end of the movable plate 222 is connected with a piston plate 223 for sealing and sliding in the piston cavity 213, an attaching elastic piece 224 is fixedly connected between the surface of the piston plate 223 and the inner cavity end of the piston cavity 213, the conductive patch 221 is located on the inner wall of the clamping frame 212, so that the conductive patch 221 can contact the positive electrode and the negative electrode of the voltmeter body when the clamping frame 212 gathers together, and the end of the movable plate 222 is driven to slide into the piston cavity 213 along with the continuous gathering of the clamping frame 212, so that the piston plate 223 slides in the piston cavity 213 in a sealing way, and air in the piston cavity 213 is extruded into the air conveying cavity 214, and the attaching elastic piece 224 stretches;
when two clamping frames 212 outwards scatter, the conductive patches 221 are driven to reset under the elasticity of the attaching elastic piece 224, so that the inflatable sealing bags 230 shrink, occupied space is saved, when the clamping frames 212 continue gathering to protect the conductive patches 221, the inner surfaces of the two conductive patches 221 are attached and extruded, the two conductive patches 221 slide simultaneously, and the two inflatable sealing bags 230 form a closed space to protect the conductive patches 221.
Then, to realize that the two clamping frames 212 can be gathered and opened towards the spacing adjusting frame 210, as shown in fig. 7, a spacing driving assembly 211 for driving the clamping frames 212 to move needs to be disposed in the inner cavity of the spacing adjusting frame 210, where the spacing driving assembly 211 at least includes two symmetrical sliding plates 2111 sliding inside the spacing adjusting frame 210 and two symmetrical driving screws 2113 rotating in grooves at the top of the spacing adjusting frame 210, ends of the two sliding plates 2111 are fixedly connected with ends of the two clamping frames 212, and outer walls of the driving screws 2113 are in threaded fit connection with ends of the sliding plates 2111, where:
the top of the interval adjusting frame 210 is rotatably provided with a rotating rod 2114, three bevel gears 2115 which are vertically meshed are arranged between the rotating rod 2114 and the end parts of the two transmission screw rods 2113, when a user holds the rotating rod 2114 to rotate, the three bevel gears 2115 are meshed to rotate, so that the two transmission screw rods 2113 are driven to rotate simultaneously, the surface of the sliding plate 2111 slides along the threads of the outer wall of the transmission screw rod 2113, and the two clamping frames 212 are driven to gather inwards or spread outwards more conveniently and stably.
Specifically, one of the sliding plates 2111 has a cable 2112 extending through the end thereof, one end of the cable 2112 is electrically connected to the conductive patch 221 when the conductive patch is energized, the other end of the cable 2112 is connected to an external circuit, and the connection between the voltmeter body 100 and the external circuit is realized through the cable 2112, so that the voltage of the external circuit is detected through the voltmeter body 100.
Because the positive and negative poles of the voltmeter body 100 are cylindrical, when the positive and negative poles are located between the two clamping frames 212, the conductive patch 221 cannot be fully matched with the positive and negative poles and is easy to cause poor contact, therefore, arc gaps are formed in the surfaces of the two clamping frames 212 opposite to each other, accommodating spaces can be provided for the positive and negative poles of the voltmeter body 100 through the arc gaps, the conductive patch 221 is in an arc plate shape matched with the positive and negative poles of the voltmeter body 100, the positive and negative poles of the voltmeter body 100 can be effectively attached to the inner wall of the conductive patch 221, and the contact effect is improved.
Because the cable 2112 is to be ensured to be long enough when the cable 2112 is connected with the external circuit through the electric wire, the external circuit is at a certain distance from the voltmeter body 100, but the cable 2112 is pulled when being long, and knotted winding is easy to cause, therefore, as shown in fig. 8-10, in the second embodiment of the utility model, a cable winding assembly 240 is arranged at the top of the clamping frames 212, the cable winding assembly 240 comprises a supporting disc 241 fixed at the top of one clamping frame 212 and a limiting disc 242 fixed at the top of the other clamping frame 212, the top of the supporting disc 241 is rotatably provided with a winding rod 243 for winding the winding cable 2112, and when the two clamping frames 212 are gathered inwards, the supporting disc 241 is in fit with the limiting disc 242, so that the limiting disc 242 is used for limiting the rotation of the winding rod 243, the long cable 2112 is finished by winding the cable 2112 on the outer wall of the winding rod 243, the cable 2112 is loosened, and the winding rod is rotated into the cable 2112 within a certain distance when the cable 2112 is satisfied, and the voltmeter body 100 is connected with the external circuit is realized;
when the two clamping frames 212 are gathered inwards, the voltage detection of the circuit is ready, and at this time, the two clamping frames 212 drive the supporting plate 241 and the limiting plate 242 to be gathered inwards, so that the limiting plate 242 is attached to the outer wall of the winding rod 243, and the winding rod 243 cannot be easily rotated through the friction resistance between the limiting plate 242 and the outer wall of the winding rod 243, so that the length of the cable 2112 is limited when the detection is performed;
meanwhile, when not in use, the cable 2112 is completely wound on the outer wall of the winding rod 243, so that occupied space is saved, and meanwhile, the limiting disc 242 limits the winding rod 243 to prevent the wound cable 2112 from loosening.
If the cables 2112 wound on the outer wall of the winding rod 243 are fewer, the cables 2112 are easy to be loosened, therefore, as shown in fig. 9, two symmetrical slots 2430 are formed on the outer wall of the winding rod 243, the outer wall of the winding rod 243 is adapted to slide with an extrusion disc 244, an extrusion elastic member 2440 is fixedly connected between the bottom of the extrusion disc 244 and the end portion of the inner cavity of the slot 2430, the extrusion elastic member 2440 is used for generating tensile resilience force when the cables 2112 are wound on the outer wall of the winding rod 243, so that the extrusion disc 244 extrudes the cables 2112 downwards, when the cables 2112 are wound on the outer wall of the winding rod 243, the extrusion disc 244 extrudes the wound cables 2112 downwards under the elasticity of the extrusion elastic member 2440, the limiting effect of the cables 2112 is improved, and the loosening of the cables 2112 is avoided.
Further, as shown in fig. 10, a third embodiment of the present utility model is different from the second embodiment in that: because the strength of limiting rotation of the coil rod 243 attached to the inner wall of the limiting disc 242 is limited, first, a plurality of limiting grooves 245 are formed in the position, close to the end, of the coil rod 243, a plurality of sliding cavities 247 are formed in the inner wall of the limiting disc 242, limiting convex plates 246 are slidably arranged in the sliding cavities 247, compression springs 2460 are fixedly connected between the end of the limiting convex plates 246 and the end of the inner cavity of the sliding cavities 247, the end of the limiting convex plates 246 are matched with the limiting grooves 245, when the limiting disc 242 and the supporting disc 241 are close to each other, the limiting convex plates 246 are aligned to the limiting grooves 245 to be inserted, the compression springs 2460 compress, the limiting convex plates 246 are tightly connected with the limiting grooves 245 under the elasticity of the compression springs 2460, the rotating strength of the limiting coil rod 243 is further improved, and if the limiting convex plates 246 slide into the sliding cavities 247 through external force when the limiting disc 242 and the supporting disc 241 are attached to each other, the limiting convex plates 246 slide out of one limiting groove 245, and slide into the other limiting grooves 245, so that each time of rotation of the coil rod 243 is limited, and the stability of a cable 2112 is improved in the detection process.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. Circuit detection device based on centre gripping formula contact, including being used for detecting voltmeter body (100) of circuit voltage, its characterized in that: the positive and negative extreme of voltmeter body (100) all are connected with centre gripping contact connection structure (200), centre gripping contact connection structure (200) are including interval adjustment frame (210) at least, inside slip of interval adjustment frame (210) is equipped with two symmetrical clamping frames (212), clamping frame (212) inner wall is equipped with electric connection subassembly (220) that are used for contacting positive and negative pole realization external circuit of voltmeter body (100) and voltmeter body (100) electric connection, wherein:
the edges of the surfaces opposite to the two clamping frames (212) are respectively provided with an inflatable sealing bag (230), the two clamping frames (212) gather inwards, the electric connection assembly (220) extrudes and slides into the clamping frames (212), the two inflatable sealing bags (230) are driven to expand to form a closed space under the atmospheric pressure, and the joint of the electric connection assembly (220) and the positive electrode and the negative electrode of the voltmeter body (100) is positioned in the closed space;
piston cavity (213) and gas transmission chamber (214) have been seted up to inside holder (212), electric connection subassembly (220) are in inside piston cavity (213), the outer wall intercommunication of inflatable seal bag (230) is equipped with communicating pipe (231), just communicating pipe (231) tip stretches into the inside intercommunication setting of gas transmission chamber (214), wherein:
a through hole (215) is communicated between the inner cavities of the piston cavity (213) and the gas transmission cavity (214);
the electric connection assembly (220) at least comprises a conductive patch (221), wherein the end part of the conductive patch (221) is fixedly connected with a movable plate (222), the end part of the movable plate (222) penetrates through the surface of the clamping frame (212) and stretches into the piston cavity (213), the end part of the movable plate (222) is connected with a piston plate (223) which is used for sliding in the piston cavity (213) in a sealing manner, and an attaching elastic piece (224) is fixedly connected between the surface of the piston plate (223) and the end part of the inner cavity of the piston cavity (213);
the utility model provides a clearance adjustment frame (210) inner chamber is equipped with interval drive assembly (211) that are used for driving clamping frame (212) motion, interval drive assembly (211) are in including two symmetrical sliding plate (2111) and the rotation in interval adjustment frame (210) top recess of interval adjustment frame (210) inside at least, two sliding plate (2111) tip and two clamping frame (212) tip fixed connection, transmission lead screw (2113) outer wall with sliding plate (2111) tip screw-thread fit connection, wherein:
the top of the interval adjusting frame (210) is rotatably provided with a rotating rod (2114), and three bevel gears (2115) which are vertically meshed are arranged between the rotating rod (2114) and the end parts of the two transmission screw rods (2113).
2. The clamp contact based circuit testing device of claim 1, wherein: one end of the sliding plate (2111) is provided with a cable (2112) in a penetrating mode, one end of the cable (2112) is electrically connected with the conductive patch (221) when the conductive patch is electrified, and the other end of the cable (2112) is connected with an external circuit.
3. The clamp contact based circuit testing device of claim 1, wherein: the two opposite surfaces of the clamping frames (212) are provided with arc-shaped notches, and the conductive patch (221) is in an arc-shaped plate shape matched with the positive electrode and the negative electrode of the voltmeter body (100).
4. The clamp contact based circuit testing device of claim 1, wherein: the utility model discloses a cable winding assembly, including clamping frame (212), clamping frame (212) top is equipped with cable winding assembly (240), cable winding assembly (240) including fix one of them supporting disk (241) at clamping frame (212) top and fix another limiting disk (242) at clamping frame (212) top, supporting disk (241) top rotation is equipped with reel pole (243) that are used for winding coiling cable (2112), and when two clamping frames (212) are inwards gathered together, the laminating of supporting disk (241) and limiting disk (242) adaptation makes limiting disk (242) be used for restricting the rotation of reel pole (243).
5. The clamp contact based circuit testing device of claim 4, wherein: two symmetrical slots (2430) are formed in the outer wall of the winding rod (243), an extrusion disc (244) is adaptively and slidably arranged on the outer wall of the winding rod (243), an extrusion elastic piece (2440) is fixedly connected between the bottom of the extrusion disc (244) and the end part of an inner cavity of the slot (2430), and the extrusion elastic piece (2440) is used for generating stretching resilience force when a cable (2112) is wound on the outer wall of the winding rod (243), so that the extrusion disc (244) extrudes the cable (2112) downwards.
6. The clamp contact based circuit testing device of claim 5, wherein: the position of the winding rod (243) close to the end is provided with a plurality of limit grooves (245), the inner wall of the limit disc (242) is provided with a plurality of sliding cavities (247), limiting convex plates (246) are arranged in the sliding cavities (247) in a sliding mode, compression springs (2460) are fixedly connected between the end portions of the limiting convex plates (246) and the end portions of the inner cavities of the sliding cavities (247), and the end portions of the limiting convex plates (246) are matched with the limit grooves (245).
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