CN206806699U - A kind of liquid metal high speed rotary electric connector - Google Patents
A kind of liquid metal high speed rotary electric connector Download PDFInfo
- Publication number
- CN206806699U CN206806699U CN201720447197.2U CN201720447197U CN206806699U CN 206806699 U CN206806699 U CN 206806699U CN 201720447197 U CN201720447197 U CN 201720447197U CN 206806699 U CN206806699 U CN 206806699U
- Authority
- CN
- China
- Prior art keywords
- end cap
- liquid metal
- shell
- high speed
- electric rotor
- 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
Abstract
It the utility model is related to a kind of liquid metal high speed rotary electric connector, including shell, output end end cap, input end cap, electric rotor and liquid metal, the output end end cap and input end cap are arranged on the shell both ends, the output end end cap is provided with lead-out terminal, the input end cap is provided with through hole, the electric rotor is arranged in the shell, the through hole that described electric rotor one end is provided with input terminal from the input end cap passes, the electric rotor other end and the shell, inner chamber is formed between output end end cap, the liquid metal is arranged in the inner chamber.Compared with prior art, the utility model is compact-sized, without response hesitation, wear extent is extremely small, with simple in construction, processing cost is relatively low, while the utility model is designed with magnet fluid sealing, the extreme environment such as dust, underwater is can be applied to, drastically increases response speed, stability, reliability, economy and the service life of electric connector.
Description
Technical field
A kind of rotary electric connector is the utility model is related to, rotation electrically connects at a high speed more particularly, to a kind of liquid metal
Device.
Background technology
Rotary electric connector is that its input and output end can rotate around common axis, and can guarantee that the connection of circuit connection
Device, it is typically used in the equipment such as auto steerer, deep drilling rig, CNC beds.In rotary connector, most commonly seen shape
Formula is mechanical structure formula, i.e. the rotatable bodies arranged coaxial by fixed outer cylinder body and with inner barrel, and ribbon cable is held
In the receiving space received and marked off between these outer cylinder bodies and inner barrel, to realize rotation circuit connection.It is this
The air bag inflator installed on the limited handle of the such rotation number of transfer of the rotary connector as automobile etc.
Electrical connecting unit.Above-mentioned ribbon cable is the shoestring that conductor is carried in dielectric film, common are and winds the ribbon cable
The screw type of curl and the counter-rotative type for inverting and winding halfway, but the counter-rotative type of the latter can significantly shorten ribbon cable
Length, reduce the size of rotary connector to a certain extent.
The main rotation circuit connector of prior art is coaxially arranged mainly by ribbon cable or bearing shell, but this form
Cause electrical connector interior cable and bearing shell constantly to be rubbed under electrical condition, so easily generate heat, produce electric spark, serious shadow
The performance of electric connector is rung, and there may be the generation of peril.
Utility model content
The purpose of this utility model is to provide a kind of liquid metal high speed rotary electric connector, to solve existing machinery
The problem of connection of structural formula electric connector is unreliable, more to operating environment requirements.
In order to realize above-mentioned purpose, adopt the following technical scheme that.A kind of liquid metal high speed rotary electric connector, bag
Shell, output end end cap, input end cap, electric rotor and liquid metal are included, the output end end cap and input end cap are set
At the shell both ends, the output end end cap is provided with lead-out terminal, and the input end cap is provided with through hole, and the electricity turns
Son is arranged in the shell, and the through hole that described electric rotor one end is provided with input terminal from the input end cap passes, institute
State and form inner chamber between electric the rotor other end and the shell, output end end cap, the liquid metal is arranged in the inner chamber.
Main body of the shell as rotary connector, its main function are external stability and supporting role.Output end end cap is used to export electricity
Stream.Input end cap is mainly used in fixing electric rotor, and forms closed space with shell, output end end cap.Electric rotor main will be held
The spinning movement of rotary electric connector is carried on a shoulder pole, and foreign current is delivered to output end.Liquid metal is mainly used in lubricating electric rotor
Relative rotation between lead-out terminal, and electric current is delivered to lead-out terminal from electric rotor.Input of the electric current from electric rotor
Son enters, and is exported after liquid metal from the lead-out terminal of output end end cap.
The shell is provided with sealing permanent magnet, and the sealing permanent magnet is arranged on the outer casing inner wall, positioned at described outer
Between shell inwall and the electric rotor outer wall.Sealing permanent magnet is used to prevent interior liquid metal from input end cap and shell connecting
Connect the leakage at place.
0.02 to 0.2 millimeter of gap is provided between the sealing permanent magnet and the electric rotor, is set in the gap
It is equipped with magnetic fluid.Magnetic fluid is mainly used in sealing liquid metal, improves sealing, mainly make use of magnetic fluid in magnetic fields
Under magnetic viscosity increase characteristic, for water-based magnetic fluid, the magnetic field intensity of permanent magnet should be greater than 0.1T（Tesla）.Often
Material has Nd-Fe-B permanent magnet, ferrite permanent-magnet iron.
The liquid metal is gallium, gallium-indium alloy, gallium-indium-tin alloy or gallium indium red brass.Can be according to specifically used temperature
Selected, gallium, gallium-indium alloy, gallium-indium-tin alloy, the liquidus curve of gallium indium red brass are respectively 29.78,25.0,10.7,
7.6, solidus 29.78,15.7,10.7,6.5（Unit：Degree Celsius）.
The magnetic fluid is temperature-sensitive insulated magnetic fluid, and the temperature-sensitive insulation magnetic fluid is water base, oil base, ester group or fluorine ether
Oily magnetic fluid.From when consider fluid viscosity, pressure and economy to select the magnetic fluid of the different intensity of magnetization, magnetization is strong
Degree is higher, and magnetic fluid solid property is more obvious.
The shell is electrically non-conductive material, and the lead-out terminal of the output end end cap is the conductive material in addition to aluminium, institute
Electric rotor is stated as the overall conductive material using in addition to aluminium, or the conduction material in addition to aluminium is embedded in high molecular hard material
Expect plug.It is because aluminium can produce chemical reaction with gallium except aluminium.
Design method of the present utility model comprises the following steps：
S1 designs electric root diameter D1, lead-out terminal diameter D2 and electrode minimum safe diameter Dmin allowable；
S2 uses electrically non-conductive material according to electric root diameter D1 designed enclosures, shell；
S3 designs input end cap and output end end cap according to shell sizes；
Output end end cap is arranged on shell by S4；
Liquid metal is carried out low-temperature setting by S5, is put into the inner chamber between electric rotor and output end end cap, by electric rotor
Installation coordinates；
S6 installs input end cap.
Step S2 also includes：Sealing permanent magnet mounting groove is opened up in outer casing inner wall.
Sealing permanent magnet is first arranged in sealing permanent magnet mounting groove by step S6, between sealing permanent magnet and electric rotor
Magnetic fluid is injected, then input end cap is installed.
After step S5 coordinates the installation of electric rotor, the span of the spacing W between electric rotor and lead-out terminal is W>200
μm。
The utility model has advantages below：（1）The utility model is simple in construction, compact to design, and each several part is relatively independent,
Maintain easily and overhaul；（2）The utility model has good interchangeability, can realize modularization, seriation and quick design；
（3）The utility model, without particular/special requirement, can adapt to various particular surroundings to working environment；（4）The utility model utilizes liquid
Metal and other metal contact angles are larger, therefore are adapted to rotate at a high speed；（5）Length dimension of the utility model to linkage section
Without particular/special requirement, it can be made small, the gap between electric rotor and lead-out terminal may diminish to 200 μm.
Compared with prior art, the utility model is compact-sized, and no response hesitation, wear extent is extremely small, has knot
Structure is simple, and processing cost is relatively low, while the utility model is designed with magnet fluid sealing, can be applied to the extreme ring such as dust, underwater
Border, drastically increase response speed, stability, reliability, economy and the service life of electric connector.
Brief description of the drawings
Fig. 1 is sectional structure schematic perspective view of the present utility model；
Fig. 2 is sectional structure floor map of the present utility model；
Fig. 3 is the sectional view of shell of the present utility model；
Fig. 4 is the sectional view of output end end cap of the present utility model；
Fig. 5 is the sectional view of input end cap of the present utility model；
Fig. 6 is the sectional view of electric rotor of the present utility model.
Embodiment
The utility model will be further described below in conjunction with the accompanying drawings.
Structure of the present utility model as shown in Figure 1 and Figure 2, including shell 1, output end end cap 2, input end cap 3, electricity turn
Son 4 and liquid metal.The structure of shell 1 as shown in figure 3, output end end cap 2 and input end cap 3 are arranged on the both ends of shell 1,.
As shown in figure 4, output end end cap 2 is provided with lead-out terminal 21.As shown in figure 5, input end cap 3 is provided with through hole 31.Electricity turns
Son 4 is arranged in shell 1, as shown in fig. 6, the one end of electric rotor 4 is provided with input terminal 41, from the through hole 31 of input end cap 3
Pass, inner chamber 5 is formed between the electric other end of rotor 4 and shell 1, output end end cap 2, liquid metal is arranged in inner chamber 5.
Shell 1 is provided with sealing permanent magnet 11, and sealing permanent magnet 11 is arranged on the inwall of shell 1, positioned at the inwall of shell 1 and electricity
Between the outer wall of rotor 4.0.02 to 0.2 millimeter of gap is provided between sealing permanent magnet 11 and electric rotor 4, is provided with gap
Magnetic fluid.
Liquid metal is gallium, gallium-indium alloy, gallium-indium-tin alloy or gallium indium red brass.Magnetic fluid is temperature-sensitive insulated magnetic stream
Body, temperature-sensitive insulation magnetic fluid is water base, oil base, ester group or fluorine ether oil magnetic fluid.Shell 1 is electrically non-conductive material, output end end cap 2
Lead-out terminal 21 be conductive material in addition to aluminium, electric rotor 4 is the overall conductive material using in addition to aluminium, or in high score
The conductive material plug in addition to aluminium is embedded in sub- hard material.
Electric connector of the present utility model, it can quickly be designed, be comprised the following steps according to different actual demands：
The first step：The insulation magnetic fluid of different substrates, general conventional sense are selected according to the physicochemical properties of liquid metal
Temperature insulation magnetic fluid, because temperature-sensitive insulation magnetic fluid mixed liquor has good thermal diffusivity, conventional temperature-sensitive insulation magnetic fluid has
The magnetic fluids such as water base, oil base, ester group and fluorine ether oil, Considering experimental fluid viscosity and economy select different magnetic during selection
Change the magnetic fluid of intensity；
Second step：According to electric connector demand（Voltage x current rotating speed）Design electric root diameter D1, lead-out terminal diameter D2
And electrode minimum safe diameter Dmin allowable, if electric rotor integrally uses conductive material, its minimum diameter D1 should be bigger
The minimum diameter D11 of conductive material and lead-out terminal diameter D2 will be more than electrode most in lead-out terminal diameter D2, electric rotor
Small safety diameter Dmin allowable；
3rd step：According to electric root diameter designed enclosures, sealing permanent magnet mounting groove is opened up in outer casing inner wall, shell is necessary
Using electrically non-conductive material；
4th step：Input end cap, end cap seal permanent magnet, output end end cap are designed according to shell sizes；
5th step：Low-temperature setting liquid metal（Preferably solidify in injection mould）, put it into electric rotor and output end end
Between lid, electric rotor is installed and coordinated, the span of the spacing W between electric rotor and lead-out terminal is W>200μm；
6th step：End cap seal permanent magnet is installed, magnetic fluid is injected into end cap seal permanent magnet between electric rotor, is pacified
Dress input end cap simultaneously seals；
7th step：, it is necessary to carry out energization experiment after first assembling, ensure the validity of assembling.
Claims (6)
- A kind of 1. liquid metal high speed rotary electric connector, it is characterised in that including shell, output end end cap, input end cap, Electric rotor and liquid metal, the output end end cap and input end cap are arranged on the shell both ends, the output end end cap Lead-out terminal is provided with, the input end cap is provided with through hole, and the electric rotor is arranged in the shell, the electric rotor The through hole that one end is provided with input terminal from the input end cap passes, the electric rotor other end and the shell, output Inner chamber is formed between the end cap of end, the liquid metal is arranged in the inner chamber.
- 2. liquid metal high speed rotary electric connector according to claim 1, it is characterised in that the shell is provided with close Seal permanent magnet, the sealing permanent magnet is arranged on the outer casing inner wall, positioned at the outer casing inner wall and the electric rotor outer wall it Between.
- 3. liquid metal high speed rotary electric connector according to claim 2, it is characterised in that it is described sealing permanent magnet with 0.02 to 0.2 millimeter of gap is provided between the electric rotor, magnetic fluid is provided with the gap.
- 4. liquid metal high speed rotary electric connector according to claim 1, it is characterised in that the liquid metal is Gallium, gallium-indium alloy, gallium-indium-tin alloy or gallium indium red brass.
- 5. liquid metal high speed rotary electric connector according to claim 3, it is characterised in that the magnetic fluid is temperature-sensitive Insulated magnetic fluid, the temperature-sensitive insulation magnetic fluid is water base, oil base, ester group or fluorine ether oil magnetic fluid.
- 6. liquid metal high speed rotary electric connector according to claim 1, it is characterised in that the shell is non-conductive Material, the lead-out terminal of the output end end cap are the conductive material in addition to aluminium, the electric rotor for it is overall use remove aluminium with Outer conductive material, or the embedded conductive material plug in addition to aluminium in high molecular hard material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720447197.2U CN206806699U (en) | 2017-04-26 | 2017-04-26 | A kind of liquid metal high speed rotary electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720447197.2U CN206806699U (en) | 2017-04-26 | 2017-04-26 | A kind of liquid metal high speed rotary electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206806699U true CN206806699U (en) | 2017-12-26 |
Family
ID=60737872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720447197.2U Active CN206806699U (en) | 2017-04-26 | 2017-04-26 | A kind of liquid metal high speed rotary electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206806699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992415A (en) * | 2017-04-26 | 2017-07-28 | 汕头大学 | A kind of liquid metal high speed rotary electric connector and its design method |
-
2017
- 2017-04-26 CN CN201720447197.2U patent/CN206806699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992415A (en) * | 2017-04-26 | 2017-07-28 | 汕头大学 | A kind of liquid metal high speed rotary electric connector and its design method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106992415A (en) | A kind of liquid metal high speed rotary electric connector and its design method | |
| CN107181150A (en) | The miniature rotary electric connector of magnetic fluid and its design method with switching function | |
| CN204828678U (en) | Magnetic fluid sealing device of multilayer heat dissipation web cooling slot type | |
| CN103807329A (en) | Eddy current retarder device based on magnetorheological effect | |
| CN206806699U (en) | A kind of liquid metal high speed rotary electric connector | |
| CN203702930U (en) | Efficient eddy current retarder | |
| CN106992416A (en) | A kind of magnetic fluid miniature multipath rotary electric connector and its design method | |
| CN206758812U (en) | A kind of miniature rotary electric connector of magnetic fluid with switching function | |
| CN201860202U (en) | Winding lead-out connecting terminal of high-pressure refrigeration motor | |
| CN104362824A (en) | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor | |
| CN111900837A (en) | Device and method for directly cooling end winding of flat permanent magnet motor | |
| CN206758811U (en) | A kind of magnetic fluid miniature multipath rotary electric connector | |
| CN105977747B (en) | Underwater elastic wire collector ring | |
| CN203871184U (en) | Novel high-temperature-resistant aluminum electrolytic capacitor | |
| CN203150389U (en) | Capacitor | |
| CN205319810U (en) | A cooling body for covering stator in formula motor | |
| CN201689817U (en) | Mercoid switch | |
| CN103401117B (en) | Multiconductor shell fragment collector ring | |
| CN2638292Y (en) | Rotary conducting ring | |
| CN201774334U (en) | Insulating joint of inner cooled hollow wire | |
| CN209299037U (en) | A kind of shaft current proof insulated structure for motor | |
| CN101355242A (en) | Reactive movable sealing piece for pneumatic compartment straightly-moving type circuit breaker | |
| CN201478909U (en) | Semidry submersible motor | |
| CN205452045U (en) | Capacitor | |
| CN204102650U (en) | A kind of resistor, radiator and resistor and heat dissipation device combination equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |