CN106783064B - A non-contact electric slip ring - Google Patents
A non-contact electric slip ring Download PDFInfo
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- CN106783064B CN106783064B CN201611065228.4A CN201611065228A CN106783064B CN 106783064 B CN106783064 B CN 106783064B CN 201611065228 A CN201611065228 A CN 201611065228A CN 106783064 B CN106783064 B CN 106783064B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
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- 239000011810 insulating material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
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- 229910000831 Steel Inorganic materials 0.000 claims 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/146—Inductive couplings in combination with capacitive coupling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manipulator (AREA)
Abstract
The present invention relates to a kind of contactless electric slip rings, including fixed part and rotating part；The fixed part includes: that at least two groups are positioned opposite and there are the magnetic cores of air gap between each other, is used for transmission the primary coil of power, the capacitor fixed part electrode of signal is used for transmission, for carrying the structural member of said elements in the fixed part；The rotating part includes: the secondary coil for being used for transmission power, the capacitor rotating part electrode of signal is used for transmission, for carrying the fixing piece of said elements in the rotating part；Keep relatively fixed to guarantee stable magnetic field between the magnetic core, the primary coil is wound on the magnetic core, the primary coil and the secondary coil are in the space of magnetic core encirclement, and the air gap can extend into the fixing piece for carrying secondary coil between the magnetic core.Stable magnetic field of the present invention, laser propagation effect is good, suitable for rotating contactless power and the signal transmission of occasion.
Description
Technical field
The invention belongs to field of electromechanical integration, specifically, being related to a kind of contactless electric slip ring, are suitable for rotation occasion
Contactless power and signal transmission.
Background technique
Rotary joint is very common in modern Mechatronic Systems while also playing huge effect, as industrial robot,
Radar and monitor camera etc..Currently, most commonly used in rotary joint is cable and slip ring, in which: former limit rotations
Turn being freely rotated for joint, while long-term mechanical twisting is but also cable is easy aging；The latter is mostly used brush conduction, exists easily
The disadvantages of abrasion, the safe operation period is short.And contactless power and signal transmission technology leads safer rotary joint
Electric form is possibly realized.
Early in 1996, the Gwyn Roberts team in the U.S. was just in " A Contactless Transfer Device
For Power and Data " in propose a kind of contactless electric slip ring transmitted for power and data.So far has state
Inside and outside multiple team have carried out the research of related fields.Such as Konstantinos D.Papastergiou is in " An
Airborne Radar Power Supply With Contactless Transfer of Energy-Part I:
Rotating Transformer " in coil distribution mode is compared, Yan Meicun etc. is " contactless field power supply
Resonance compensation analysis " driving circuit of electric slip ring and the different compensation ways of rectification circuit are studied and compared.
In order to improve the coefficient of coup, domestic outer portion research team is studied on core structure, such as Ali
Abdolkhani etc. is in " Improved Coupling Design of Contactless Slipring for Rotary
Applications " in U-shaped magnetic and E-type magnetic core structure is optimized, to improve magnetic induction intensity.
The Chinese invention application that number of patent application is 201610046691.8, discloses that a kind of axial half section LL type is non-to be connect
Touching reduces air gap with LL type magnetic core, improves magnetic conductivity for electric slip ring.In terms of the selection of magnetic core, due to pot core at
This is higher and is unfavorable for radiating, and powerful contactless electric slip ring mostly uses the magnetic core generation of multiple U-shaped magnetic cores or other shapes
It replaces, uses the magnetic core of L-type if patent CN201610046691.8 to reduce the air gap between magnetic core.It but is that non-pot core is rotating
In the process due between magnetic core and magnetic core relative position change, cause magnetic field unstable.Therefore, if in contactless slip ring
Design in can guarantee the relatively fixed of magnetic core, the electrical efficiency and stability to slip ring will be significantly improved.
Summary of the invention
In order to achieve the above object, the present invention provides a kind of contactless electric slip ring, with contactless power transmission with it is non-
The connection type of contact signal transmission improves and above-mentioned has that magnetic field in rotation process existing for non-contact slip ring is unstable, coupling
The low problem of collaboration number.
To achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of contactless electric slip ring, including fixed part and rotating part；
The fixed part includes: that at least two groups are positioned opposite and mutual there are the magnetic core of air gap, is used for transmission power
Primary coil, the capacitor fixed part electrode of signal is used for transmission, for carrying the structure of said elements in the fixed part
Part；
The rotating part includes: the secondary coil for being used for transmission power, is used for transmission the capacitor rotating part electrode of signal,
For carrying the fixing piece of said elements in the rotating part；Wherein:
At least two groups are positioned opposite and between each other there are keeping relatively fixed between the magnetic core of air gap, to guarantee that magnetic field is steady
It is fixed；Primary coil is wound on magnetic core, and secondary coil is bonded or is wrapped on fixing piece, and primary coil and secondary coil are in
Position magnetic core positioned opposite surrounds in space；Secondary coil is exported power by power output line, the air gap between magnetic core
Can extend into the fixing piece for carrying secondary coil between the magnetic core positioned opposite of position.
Preferably, at least two groups are positioned opposite and are between each other non-contacting or phase mutual connection there are the magnetic core of air gap
The component of touching.
Preferably, described to keep relatively fixed referring to: magnetic core be bonded on structural member or magnetic core by transition fit or
Interference fit is stuck on structural member.
It is highly preferred that the magnetic core selects U-shaped magnetic core, E-type magnetic core；Alternatively, the magnetic core selects the magnetic core of a side opening,
The arm of magnetic core side is ground away into a part, is guaranteed while secondary coil gos deep into magnetic core encirclement space, at least two groups phase
It can contact with each other between the magnetic core of arrangement, with the air gap reduced in entire magnetic circuit, and then reduce magnetic resistance.
Preferably, in the capacitor fixed part electrode, the outer surface arranging shielding layer of capacitor rotating part electrode, or
The arranging shielding layer on structural member, fixing piece, to shield magnetic field caused by the electric current on primary coil and secondary coil to letter
Number transmission interference.
It is highly preferred that the shielded layer is arranged in capacitor fixed part electrode, capacitor rotation by the way of bonding or molding
On the outer surface of transfer part sub-electrode or the structural member, fixing piece.
It is highly preferred that a kind of in the soft magnetic materials that the shielded layer selects the magnetic conductivity of soft iron, silicon steel, permalloy high；
Or select the copper or aluminium of good conductivity.Under high frequency operating condition, since the magnetic field of alternation makes shielded layer generate vortex, and it is vortexed existing
As the magnetic field of generation can effectively cancel out the effect of external magnetic field,
Preferably, it is provided with the first cable hole on the structural member, is used for access power input line and signal input line,
In: power input line connects primary coil, and signal input line connects capacitor fixed part electrode.
It is highly preferred that the structural member is made of the high insulating materials of rigidity, to guarantee in the same of carrying secondary coil
When it is as thin as possible, to reduce two groups of magnetic core air gaps.
Preferably, it is provided with the second cable hole on the fixing piece, is used for sending out signals output line and power output line,
In: signal output line is connected with capacitor rotating part electrode, and the air gap that power output line passes through between magnetic core is connected with secondary coil.
It is highly preferred that the material that the fixing piece uses is FR-4.
Preferably, the primary coil and the secondary coil select solid conductor, Litz line, copper foil or PCB winding；
The number of turns of former and deputy side winding is identical or different.
Preferably, magnetic core, primary coil described at least two groups and secondary coil constitute power section, capacitor fixed part electricity
Pole and capacitor rotating part electrode collectively constitute signal section i.e. capacitor, and the biography of low and high level is realized by the charge and discharge to capacitor
It passs；Capacitor fixed part electrode, capacitor rotating part electrode are cyclic annular and capacitor fixed part electrode sleeve in capacitor rotating part
Outside sub-electrode；
The arrangement of the power section and signal section is radial arrangement, and power section is covered in the outside of signal section
Or signal section is covered in the outside of power section；Alternatively, the arrangement of power section and signal section is axial arrangement.
Preferably, the fixed part is overlapped with the axis of the rotating part, and the fixed part and the rotating part pass through axis
Hold connection.
Compared with prior art, the present invention have it is following the utility model has the advantages that
All permeability magnetic material, that is, multiple groups of present invention magnetic core positioned opposite is fixed, therefore it is non-to avoid typical high power
Contact magnetic core dislocation in slip ring rotation process.The magnetic conductance of entire slip ring is relatively stable, and power transmission when rotation is more stable, together
When power laser propagation effect not will receive the influence of revolving speed.Stable magnetic field of the present invention, laser propagation effect is good, suitable for rotating occasion
Contactless power and signal transmission.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the contactless electric slip ring structural schematic diagram that the radial section of one embodiment of the invention is annular；
In figure: 101,102 be U-shaped magnetic core, and 103 be the structural member of fixed part, and 104 be the fixing piece of rotating part, and 105 be secondary
Grade coil, 106 be primary coil, and 107 be capacitor fixed part electrode, and 108 be capacitor rotating part electrode, and 109 is defeated for signal
Enter line, 110 be power input line, and 111 be signal output line, and 112 be power output line；
Fig. 2 is the contactless electric slip ring structural schematic diagram that the radial section of one embodiment of the invention is annular, wherein E type
Magnetic core is the E-type magnetic core of standard；
In figure: 201,202 be E-type magnetic core, and 203 be structural member i.e. the first load-bearing part of fixed part, 204 consolidating for rotating part
Determine part i.e. the second load-bearing part, 205,215 be secondary coil, and 206,216 be primary coil, and 207 are for capacitor fixed part electrode
First electrode, 208 be capacitor rotating part electrode, that is, second electrode, and 209 be signal input line, and 210 be power input line, 211
It is power output line for signal output line, 212,217 be magnetic induction line；
Fig. 3 is the contactless electric slip ring structural schematic diagram that the radial section of one embodiment of the invention is annular, wherein U-shaped
Magnetic core is by the U-shaped magnetic core of processing, and processing method is that the arm of magnetic core side is ground away a part；
In figure: 301,302 be U-shaped magnetic core, and 303 be structural member i.e. the first load-bearing part of fixed part, 304 consolidating for rotating part
Determine part i.e. the second load-bearing part, 305 be secondary coil, and 306 be primary coil, and 307 be capacitor fixed part electrode, that is, first electrode,
308 be capacitor rotating part electrode, that is, second electrode, and 309 be signal input line, and 310 be power input line, and 311 export for signal
Line, 312 be power output line；
Fig. 4 is the contactless electric slip ring structural schematic diagram that the radial section of one embodiment of the invention is annular, in which: function
Rate hop and signal hop are radially arranged；
In figure: 401,402 be U-shaped magnetic core, and 403 be structural member i.e. the first load-bearing part of fixed part, 404 consolidating for rotating part
Determine part i.e. the second load-bearing part, 405 be secondary coil, and 406 be primary coil, and 407 be capacitor fixed part electrode, that is, first electrode,
408 be capacitor rotating part electrode, that is, second electrode, and 409 be signal input line, and 410 be power input line, and 411 export for signal
Line, 412 be power output line；
Fig. 5 is a kind of shielded layer arrangement of the contactless electric slip ring of one embodiment of the invention,
In figure: 501,502 be U-shaped magnetic core, and 503 be structural member i.e. the first load-bearing part of fixed part, 504 consolidating for rotating part
Determine part i.e. the second load-bearing part, 505 be secondary coil, and 506 be primary coil, and 507 be capacitor fixed part electrode, that is, first electrode,
508 be capacitor rotating part electrode, that is, second electrode, and 509 be signal input line, and 510 be power input line, and 511 export for signal
Line, 512 be power output line, and 513,514 be soft magnetic materials；
Fig. 6 is the shielded layer arrangement of the contactless pad slip ring of another kind of one embodiment of the invention；
In figure: 601,602 be U-shaped magnetic core, and 603 be structural member i.e. the first load-bearing part of fixed part, 604 consolidating for rotating part
Determine part i.e. the second load-bearing part, 605 be secondary coil, and 606 be primary coil, and 607 be capacitor fixed part electrode, that is, first electrode,
608 be capacitor rotating part electrode, that is, second electrode, and 609 be signal input line, and 610 be power input line, and 611 export for signal
Line, 612 be power output line, and 613,614 be soft magnetic materials.
Fig. 7 is the contactless electric slip ring structural schematic diagram that the radial section of one embodiment of the invention is annular, has used 4
The U-shaped magnetic core of group；
In figure: 701,702,713,714 be U-shaped magnetic core, and 703 be structural member i.e. the first load-bearing part of fixed part, and 704 be rotation
The fixing piece of transfer part i.e. the second load-bearing part, 705,715 be secondary coil, and 706,716 be primary coil, and 707 be capacitor fixed part
Sub-electrode, that is, first electrode, 708 be capacitor rotating part electrode, that is, second electrode, and 709 be signal input line, and 710 is defeated for power
Enter line, 711 be signal output line, and 712 be power output line.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Embodiment one:
As shown in Figure 1, a kind of radial section is the contactless electric slip ring of annular, comprising: fixed part and rotating part, it is fixed
Portion is connected with rotating part by bearing, and fixed part is overlapped with the axis of rotating part；
The fixed part includes: the fixed U-shaped magnetic core 101,102 in two groups of relative positions, and primary coil 106, capacitor is fixed
Partial electrode 107 is first electrode, structural member 103 i.e. the of the fixed part for carrying primary coil 106 and first electrode 107
One load-bearing part；
The rotating part includes: secondary coil 105, and capacitor rotating part electrode 108 is second electrode, for carrying secondary
The fixing piece 104 of coil 105 and the rotating part of second electrode 108 is the second load-bearing part；
Two groups of magnetic cores 101, primary coil 106 and the composition power section of secondary coil 105, capacitor fixed part electrode 107,
Capacitor rotating part electrode 108 forms signal section, that is, capacitor；
Capacitance electrode, that is, first electrode 107, second electrode 108 use cyclic structure, with guarantee signal transmission effect not with
It rotates and changes；Primary coil 106 is wound on U-shaped magnetic core 101, and secondary coil 105 is bonded or is wrapped in the second load-bearing part 104
On, and primary coil 106 and secondary coil 105 are in the space that two groups of U-shaped magnetic cores 101,102 surround；Two groups of U-shaped magnetic cores
101, there is air gap between 102 to guarantee that the second load-bearing part 104 can extend into the space that two groups of U-shaped magnetic cores 101,102 surround.
Further, the secondary coil 105 is exported power by power output line 112, and the air gap between magnetic core makes
The fixing piece and power output line 112 for carrying secondary coil can extend between the magnetic core positioned opposite of position.
As a preferred embodiment, the primary coil 106 and the secondary coil 105 use copper stranded conductor to reduce
Kelvin effect, to reduce coil heating.
As a preferred embodiment, it is provided with cable hole on first load-bearing part 103, it is defeated for access power
Enter line 110, signal input line 109；It is provided with cable hole on second load-bearing part 104, is used for sending out signals output line 111
With power output line 112；
Wherein: the power input line 110 connects primary coil 106, and the signal input line 109 connects first electrode
107, the signal output line 111 is connected with second electrode 108, the power output line 112 pass through two groups of U-shaped magnetic cores 101,
Air gap between 102 is connected with secondary coil 105.
Further, the power output line 112 is used by the part of two groups of U-shaped magnetic cores 101,102 air gaps and applies copper
Mode, to reduce volume shared by conducting wire, so that air gap be enable to be made smaller.
As a preferred embodiment, second load-bearing part 104 is made of the high insulating materials of rigidity, to guarantee
It is as thin as possible while carrying secondary coil, to reduce the air gap between two groups of U-shaped magnetic cores 101,102.
As a preferred embodiment, U-shaped magnetic core 101,102 described in two groups is non-contacting or contacts with each other；U-shaped magnetic
Core 101,102 is bonded on the first load-bearing part 103；Or U-shaped magnetic core 101,102 is stuck in by transition fit or interference fit
On first load-bearing part 103.
Alternating current is input on primary coil 106 by power input line 110, generates changing magnetic field, is in this
Since electromagnetic induction generates the induced current of alternation on secondary coil 105 in changing magnetic field, which passes through power output
Line 112 is output to external loading, to realize the transmitting of power, magnetic core 101,102 is used to constrain magnetic flux, improves the degree of coupling, from
And bigger induced current is generated on secondary coil 105；Low and high level signal is passed into capacitor by signal input line 109
Fixed part electrode 107, the low and high level that output end is inputted by the charge and discharge judgement of capacitor, to realize the transmitting of signal.By
Fixed part is mutually not in contact with each other with rotating part when work, so being achieved that the non-contact of power and signal in rotating part rotation
Transmitting.
Embodiment two:
As shown in Fig. 2, a kind of radial section is the contactless electric slip ring of annular, building block and building block it
Between connection relationship be the same as example 1, compared to embodiment one, difference is: real with two groups of E-type magnetic cores 201,202 substitution
Apply two groups of U-shaped magnetic cores 101,102 in example one, and in same group of magnetic core 201 (or 202) two groups of primary coils 206,216 (or
Secondary coil 205,215) winding direction are on the contrary, by taking E-type magnetic core 201 as an example, magnetic induction line 217 is by 201 center pillar of E-type magnetic core,
201 center pillar of E-type magnetic core is returned to by 202 center pillar of E-type magnetic core, 202 two side arms of E-type magnetic core, 201 two side arms of E-type magnetic core.At the beginning of two groups
Grade coil 206,216 and two groups of secondary coils 205,215 can realize more powerful transmission under same volume.
Embodiment three:
As shown in figure 3, a kind of radial section is the contactless electric slip ring of annular, building block and building block it
Between connection relationship be the same as example 1；Compared to embodiment one, difference is:
Using two groups of U-shaped magnetic cores 101,102 in two groups of U-shaped magnetic cores 301 of process processing, 302 alternate embodiments one, add
Work mode is respectively the arm of two groups of U-shaped magnetic cores 301,302 sides to be ground away a part, makes two groups of magnetic cores 301,302 sides
Arm can be close to, have air gap between the arm of the other side, so that the second load-bearing part 304 protrudes into what two groups of U-shaped magnetic cores 301,302 surrounded
In space, the air gap of magnetic strength line loop entire in this way reduces, and effectively improves the magnetic conductivity of power train portion, and to EMI
Inhibitory effect it is more preferable.
Example IV:
As shown in figure 4, a kind of radial section is the contactless electric slip ring of annular, building block and building block it
Between connection relationship be the same as example 1；Compared to embodiment one, difference is:
Power section (including two groups of U-shaped magnetic cores 401,402, primary coil 406 and secondary coil 405) and signal section
(i.e. capacitor, including first electrode 407, second electrode 408) is axially arranged, be suitable for that radial space is smaller and axial space compared with
Big occasion.Since the leakage field of power section concentrates at air gap, air gap farther out from signal hop, therefore power transmission portion
Divide smaller to the interference of signal hop.
Embodiment five:
As shown in figure 5, a kind of contactless electric slip ring, connection relationship and reality between building block and building block
It is identical to apply example one；Compared to embodiment one, difference is:
Capacitance electrode, that is, second electrode 508, first electrode 507 are wrapped up and played respectively with soft magnetic materials 513,514
Shielding action, to reduce the interference that power train portion transmits signal.
As a preferred embodiment, the soft magnetic materials 513,514 is pasted and the 508, first electricity of second electrode respectively
The surface of pole 507, or be separately molded on the second load-bearing part 504, the first load-bearing part 503.
Embodiment six:
As shown in fig. 6, a kind of contactless electric slip ring, connection relationship and reality between building block and building block
It is identical to apply example one；Compared to embodiment one, difference is:
With soft magnetic materials 613,614 respectively by the first load-bearing part 603, the second load-bearing part 604 be located at first electrode 607,
Portion envelops between second electrode 608 and two groups of U-shaped magnetic cores 601,602 get up, and can effectively reduce power train portion production
The interference of raw electromagnetic fields on both signal hop, and axis fever can be effectively reduced.
As a preferred embodiment, the first load-bearing part is pasted respectively or be molded in the soft magnetic materials 613,614
603, on the second load-bearing part 604.
Embodiment seven:
As shown in fig. 7, a kind of radial section is the contactless electric slip ring of annular, building block and building block it
Between connection relationship be the same as example 1；Compared to embodiment one, difference is:
4 groups of relatively-stationary U-shaped magnetic cores 701,702,713,714 are used, wherein positioned opposite, the magnetic of magnetic core 701,702
Core 713,714 is positioned opposite；2 groups of primary coils, 706,716 and 2 groups of secondary coils 705,715 are used, wherein primary coil
706 and secondary coil 705 be in U-shaped magnetic core 701,702 encirclement space in, primary coil 716 and secondary coil 715 are in U
In the space that type magnetic core 713,714 surrounds.This embodiment is applicable to the bigger occasion of transimission power.
All permeability magnetic materials of the present invention are fixed, therefore avoid magnetic in the non-contact slip ring rotation process of typical high power
Core dislocation.The magnetic conductance of entire slip ring is relatively stable, and power transmission when rotation is more stable.The laser propagation effect of power will not simultaneously
It is influenced by revolving speed.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of contactless electric slip ring, which is characterized in that including fixed part and rotating part；
The fixed part includes: that at least two groups are positioned opposite and there are the magnetic cores of air gap between each other, is used for transmission the first of power
Grade coil, is used for transmission the capacitor fixed part electrode of signal, for carrying the structural member of said elements in the fixed part；
The rotating part includes: the secondary coil for being used for transmission power, is used for transmission the capacitor rotating part electrode of signal, is used for
Carry the fixing piece of said elements in the rotating part；Wherein:
At least two groups are positioned opposite and between each other there are keeping relatively fixed between the magnetic core of air gap, to guarantee stable magnetic field；
Primary coil is wound on magnetic core, and secondary coil is bonded or is wrapped on fixing piece, and primary coil and secondary coil are in position
Magnetic core positioned opposite is set to surround in space；Secondary coil is exported power by power output line, and the air gap between magnetic core makes
The fixing piece of carrying secondary coil can extend between the magnetic core positioned opposite of position.
2. a kind of contactless electric slip ring according to claim 1, it is characterised in that: at least two groups are positioned opposite and mutual
Between there are the magnetic core of air gap be the non-contacting or component that contacts with each other.
3. a kind of contactless electric slip ring according to claim 1, it is characterised in that: the holding is relatively fixed to be referred to:
Magnetic core is bonded on structural member or magnetic core is stuck on structural member by transition fit or interference fit.
4. a kind of contactless electric slip ring according to claim 3, it is characterised in that: the magnetic core selects U-shaped magnetic core, E
Type magnetic core；Alternatively, the magnetic core selects the magnetic core of a side opening, i.e., the arm of magnetic core side is ground away into a part, guaranteed secondary
While grade coil gos deep into magnetic core encirclement space, it can contact with each other between at least two groups magnetic core positioned opposite, it is entire to reduce
Air gap in magnetic circuit, and then reduce magnetic resistance.
5. a kind of contactless electric slip ring according to claim 1, it is characterised in that: in the capacitor fixed part electricity
Pole, capacitor rotating part electrode outer surface arranging shielding layer, or the arranging shielding layer on structural member, fixing piece, with shielding
The interference that signal is transmitted in magnetic field caused by electric current on primary coil and secondary coil.
6. a kind of contactless electric slip ring according to claim 5, it is characterised in that: the shielded layer is using bonding or mould
The mode of system is arranged in capacitor fixed part electrode, on the outer surface of capacitor rotating part electrode or structural member, fixing piece.
7. a kind of contactless electric slip ring according to claim 5, it is characterised in that: the shielded layer selects soft iron, silicon
It is a kind of in steel, permalloy, or select copper or aluminium.
8. a kind of contactless electric slip ring according to claim 1-7, it is characterised in that: set on the structural member
It is equipped with the first cable hole, is used for access power input line and signal input line, in which: power input line connects primary coil, letter
Number input line connects capacitor fixed part electrode；The structural member is made of the high insulating materials of rigidity；
It is provided with the second cable hole on the fixing piece, is used for sending out signals output line and power output line, in which: signal output
Line is connected with capacitor rotating part electrode, and power output line passes through air gap and secondary coil phase between the magnetic core positioned opposite of position
Even.
9. a kind of contactless electric slip ring according to claim 1-7, it is characterised in that: magnetic described at least two groups
Core, primary coil and secondary coil constitute power section, and capacitor fixed part electrode and capacitor rotating part electrode collectively constitute
Signal section, that is, capacitor realizes the transmitting of low and high level by the charge and discharge to capacitor；Capacitor fixed part electrode, capacitor rotation
Partial electrode is cyclic annular and capacitor fixed part electrode sleeve outside capacitor rotating part electrode；
The arrangement of the power section and signal section is radial arrangement, power section cover signal section outside or
Signal section is covered in the outside of power section；Alternatively, the arrangement of power section and signal section is axial arrangement.
10. a kind of contactless electric slip ring according to claim 1-7, it is characterised in that: the rotating part with
The axis of the fixed part is overlapped.
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| CN201611065228.4A CN106783064B (en) | 2016-11-28 | 2016-11-28 | A non-contact electric slip ring |
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| CN201611065228.4A CN106783064B (en) | 2016-11-28 | 2016-11-28 | A non-contact electric slip ring |
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| CN106783064B true CN106783064B (en) | 2019-02-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109411206B (en) * | 2018-12-03 | 2024-05-31 | 常州市维多视频科技有限公司 | Magnetic slip ring structure |
| CN114152928B (en) * | 2021-12-16 | 2024-07-02 | 上海广电通信技术有限公司 | Non-contact type rotating slip ring and photoelectric data transmission system of X-band marine solid continuous wave navigation radar |
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| CN106783064A (en) | 2017-05-31 |
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