CN106252987A - Floating type multicore electrical cnnector - Google Patents
Floating type multicore electrical cnnector Download PDFInfo
- Publication number
- CN106252987A CN106252987A CN201610824173.4A CN201610824173A CN106252987A CN 106252987 A CN106252987 A CN 106252987A CN 201610824173 A CN201610824173 A CN 201610824173A CN 106252987 A CN106252987 A CN 106252987A
- Authority
- CN
- China
- Prior art keywords
- hitch
- insulator
- contact surface
- interior insulator
- floating type
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
- H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Insulators (AREA)
Abstract
The present invention proposes a kind of floating type multicore electrical cnnector, for between hitch, the company of electrical system hangs, including the multiple contacts for connecting two adjacent hitches, and the insulator of contact is installed, insulator includes the shell being fixed on hitch, and the interior insulator being sheathed in shell, it is connected between interior insulator and shell and has elastic component, when hitch is even hung, two docking hitches are close to, making interior insulator overcome the resistance of flexible member to shrink under the pressure of the first contact surface, during coupler-uncoupling, interior insulator is return under the effect of flexible member.The present invention can meet the demand of hitch tension and compression conversion operating mode in running, can guarantee that again dynamic and static contact signal stabilization.
Description
Technical field
The invention belongs to rail traffic vehicles interconnection technique field, particularly relate to a kind of floating type multicore electrical cnnector.
Background technology
Multicore electrical cnnector is to be electrically connected important device between full-automatic, semi-automatic, semi-permanent car coupler, in city
City's field of track traffic, the application of multicore electrical cnnector is the most universal.Existing multicore electrical cnnector is bolted
Being arranged on hitch, its moving contact matrix is connected with insulator by helicitic texture.During train operation, moving contact by its relative to
The longitudinal extension of static contact compensates the gap that hitch certainly exists in running.
But, in actual applications, when being especially applicable to EMU and field of urban rail, along with hitch
The increase of service life, the gap that hitch produces after even hanging will necessarily gradually produce or increase.Now, moving contact in work and is fitted
Abrasion can be produced when answering coupler slack to change, and there is the possibility of arcing electric discharge.The most only by moving contact compensate between hitch by
The gap produced in tension and compression switching motion, has significant limitation.
Summary of the invention
The gap that the present invention is directed to produce when existing multicore electrical cnnector compensates hitch operation by contact can not meet car
The technical problem of the demand that hook gap is gradually increased, proposes one and can meet hitch tension and compression conversion operating mode in train travelling process
Demand, can guarantee that again the floating type multicore electrical cnnector of dynamic and static contact signal stabilization.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of floating type multicore electrical cnnector, between hitch, the company of electrical system hangs, including adjacent for connecting two
Multiple contacts of hitch, and install the insulator of contact, insulator includes the shell being fixed on hitch, and outside being sheathed on
Interior insulator in shell, is connected between interior insulator and shell and has elastic component, and when hitch is even hung, two docking hitches are close to, and make
Interior insulator overcomes the resistance of flexible member to shrink under the pressure of the first contact surface, and during coupler-uncoupling, interior insulator is in elasticity
Return under the effect of element.
As preferably, interior insulator has the first contact surface towards one end of adjacent hitch, and contact is arranged at the first contact surface
On, hitch has the hitch even extension end face with the laminating of adjacent hitch when hitch is even hung, the first contact surface stretches out hitch and even hangs
End face, the first contact surface and hitch are even hung the vertical dimension between end face and are docked more than or equal to during train operation two between hitch
Wide arc gap.
As preferably, flexible member is socketed on interior insulator, and flexible member one end is connected with interior insulator, the other end with
Shell connects.
As preferably, outside interior insulator, there is the second contact surface, inside shell, have the 3rd contact corresponding to the second contact surface
Face, the second contact surface and the 3rd contact surface are the conical surface, and can be in close contact under the pressure of flexible member, the centrage of the conical surface with
Interior insulator telescopic direction is parallel.
As preferably, the second contact surface and the 3rd contact surface are taper seat or pyramidal surface.
As preferably, shell side offers can be by the positioning through hole of alignment pin, and interior insulator is logical corresponding to location
Hole is provided with groove, and the length direction of groove is parallel with the telescopic direction of interior insulator, and alignment pin is through positioning through hole and stretches into
To groove, with insulator axial rotation before hitch is even hung in limiting.
As preferably, groove is rectangular channel, and alignment pin stretches into one end sidewall of groove and groove two in the direction of the width
Individual sidewall is tangent.
As preferably, groove includes the size first concave part more than alignment pin diameter of width, and width side
To size equal to the second concave part of alignment pin diameter, before hitch is even hung, alignment pin stretches into one end of groove, and to be positioned at first recessed
In groove portion；After hitch is even hung, alignment pin stretches into one end of groove and is positioned at the second concave part.
As preferably, seamlessly transit between the first concave part and the second concave part.
As preferably, interior insulator is installed one end of contact and is arranged with dust cover.
Compared with prior art, advantages of the present invention and having the active effect that
1, the present invention is by being set to include interior insulator and shell by the insulator of existing multicore electrical cnnector, and
By arranging flexible member, and limit the first contact surface and the relative position of hitch even extension end face, with this at compensation train car
During hook gap, the stretching motion of interior insulator is replaced the stretching motion of existing multicore electrical cnnector moving contact, and then makes
Obtain the present invention and can meet the demand of hitch tension and compression conversion operating mode in train travelling process, can guarantee that again activation signal between contact
Stability.
2, the present invention is by being set to the conical surface by the second contact surface and the 3rd contact surface so that when coupler-uncoupling, adjacent
First contact surface of insulator accurate centering in interior insulator telescopic direction in electric coupler.
3, the present invention is by arranging alignment pin at shell, arranges groove at interior insulator, and arranges recessed grain and include first
Concave part and the second concave part so that floating type multicore electrical cnnector is when train operation, it is possible to play and compensate docking hitch
Between the axially skew in rotation direction, reduce the abrasion of moving contact with this further, and interior insulation can be made when coupler-uncoupling
Body rotates return automatically, makes in adjacent electric coupler the first contact surface of insulator in interior insulator axial rotation side with this
Upwards accurately centering.
4, by the second contact surface and the 3rd contact surface are set to the conical surface, alignment pin is set at shell, at interior insulator
Groove is set, and recessed grain is set includes the first concave part and the second concave part, on the one hand when train operation so that interior insulation
Body can compensate for docking hitch gap on X, Y, Z and axial-rotation direction, reduces the abrasion of moving contact further, it is ensured that letter
Number transmission stability；On the other hand, interior insulator self-return can be made when coupler-uncoupling, with this without manually adjusting just
The present invention can be made to be directly used in hitch next time even hang.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention floating type multicore electrical cnnector is installed on hitch before hitch is even hung；
Fig. 2 is the present invention floating type multicore electrical cnnector structural representation when train operation；
Fig. 3 is the structural representation of the present invention floating type multicore electrical cnnector groove；
Fig. 4 is the variant one of Fig. 3；
Fig. 5 is the variant two of Fig. 3.
In the most each figure: 1 contact；2, shell；3, interior insulator；4, the first contact surface；5, end ring；6, flexible member；7、
Second contact surface；8, end face even hung by hitch；9, positioning through hole；10, groove；11, alignment pin；12, the first concave part；13, second
Concave part；14, dust cover；15, the 3rd contact surface.
Detailed description of the invention
Below, by exemplary embodiment, the present invention is specifically described.It should be appreciated, however, that do not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
In describing the invention, it should be noted that term " interior ", " outward ", " on ", D score, the instruction such as "front", "rear"
Orientation or position relationship be based on the position relationship shown in accompanying drawing 1, be for only for ease of description the present invention and simplify describe, and
It not to indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and can not manage
Solve as instruction or hint relative importance.
Seeing Fig. 1 and Fig. 2, Fig. 1 is that the present invention floating type multicore electrical cnnector is installed on hitch before hitch is even hung
Structural representation, Fig. 2 is the present invention floating type multicore electrical cnnector structural representation when train operation.Such as Fig. 1 and
Shown in Fig. 2, a kind of floating type multicore electrical cnnector, between hitch, the company of electrical system hangs, including adjacent for connecting two
Multiple contacts 1 of hitch, and the insulator of contact 1 is installed；In order to be able to meet the demand that train coupler gap is gradually increased, and
Ensureing the stability of dynamic and static contact signal, insulator includes the shell 2 being fixed on hitch, and is sheathed in shell 2
Interior insulator 3, be connected between interior insulator 3 and shell 2 and have elastic component 6, when hitch is even hung, two docking hitches are close to, and make
Interior insulator 3 overcomes the resistance of flexible member 6 to shrink under the pressure of the first contact surface 4, and during coupler-uncoupling, interior insulator 3 exists
Return under the effect of flexible member 6.
The present invention by the insulator of existing multicore electrical cnnector is set to include interior insulator 3 and shell 2, and
By arranging flexible member 6, and limit the first contact surface 4 and the relative position of hitch even extension end face 8, with this at compensation train
During coupler slack, the stretching motion of interior insulator 3 is replaced the stretching motion of existing multicore electrical cnnector moving contact, and then
Make the present invention can meet the demand of hitch tension and compression conversion operating mode in train travelling process, can guarantee that again and contact between contact 1
The stability of signal.
It addition, as it is shown in figure 1, interior insulator 3 is the first contact surface 4 towards one end end face of adjacent hitch, contact 1 is arranged
On the first contact surface 4, hitch has the hitch even extension end face 8 with the laminating of adjacent hitch when hitch is even hung.Meanwhile, in order to
Interior insulator 3 is made to stretch, and the gap along traffic direction that can produce in effective compensation train travelling process, first connects
The vertical dimension that contacting surface 4 is stretched out between hitch even extension end face 8, the first contact surface 4 and hitch even extension end face 8 is transported more than or equal to train
During row, two dock the maximal clearance between hitch.It should be noted that the maximal clearance of two docking hitches is according to the actual fortune of train
During row, two dock the difference of the degree of wear between hitches and change, and therefore, the maximal clearances of above-mentioned two docking hitches refer at hitch
Between degree of wear when reaching maximum (according to different greatest wear journeys requiring to can determine that between hitch to each model hitch in engineering
Degree) corresponding to maximal clearance.
For the installation site of above-mentioned flexible member 6, particularly as follows: as shown in Figure 1 or 2, flexible member 6 be socketed in interior absolutely
On edge body 3, the left end of flexible member 6 is connected with interior insulator 3, and the right-hand member of flexible member 6 is connected with shell 2.Wherein, elastic unit
Part 6 could be arranged to spring.It should be noted that the installation site of flexible member 6 is not limited to above-mentioned.For example, it is possible to by elasticity
Element 6 is arranged on the right of interior insulator 3, the i.e. left end of flexible member 6 and is connected with the right-hand member of interior insulator 3, flexible member 6
Right-hand member is connected with shell 2.Relative to the technical scheme at the rear that flexible member 6 is arranged on interior insulator 3, use elasticity unit
The technical scheme that part 6 is socketed in outside interior insulator 3 easily facilitates between flexible member 6 and interior insulator 3 assembling in the enclosure
And location, and then depend merely on a flexible member 6 when train operation the stretching motion accurate compensation of interior insulator 3 just can be made to exist
During train operation, the gap produced on direction exercised by docking hitch along train.
It addition, as shown in Figure 1 or 2, outside interior insulator 3, there is the second contact surface 7, connect corresponding to second inside shell 2
Contacting surface 7 has the 3rd contact surface 15, the second contact surface 7 and the 3rd contact surface 15 can be in close contact under the pressure of flexible member 6.
Preferably, as shown in Figure 1 or 2, in order to when coupler-uncoupling so that insulator 3 in adjacent electric coupler
First contact surface 4 is accurate centering in interior insulator telescopic direction, and the second contact surface 7 and the 3rd contact surface 15 may be configured as cone
Face, meanwhile, the centrage of the conical surface is parallel with interior insulator 3 telescopic direction.Concrete, the second contact surface 7 and the 3rd contact surface 15
The conical surface may be configured as taper seat or pyramidal surface.
Preferably, as shown in Figure 1 or 2, during in order to ensure coupler-uncoupling, interior insulator 3 is maintained in rotation direction
Initial position, offering on shell 2 side can be by the positioning through hole 9 of alignment pin 11, and interior insulator 3 is corresponding to positioning through hole
9 are provided with groove 10, and the length direction of groove 10 is parallel with the telescopic direction of interior insulator 3, and alignment pin 11 is through positioning through hole 9
And stretch in groove 10, with the insulator 3 axial rotation before hitch is even hung in limiting.Wherein, so that the present invention ties
Structure is more stable, and the quantity of positioning through hole 9, alignment pin 11 and groove 10 could be arranged to multiple.
For the structure of above-mentioned groove 10, particularly as follows: as it is shown on figure 3, groove 10 can be rectangular channel, alignment pin 11 stretches into
One end sidewall of groove 10 and groove 10 two sidewalls in the direction of the width are tangent.Additionally, as shown in Figure 4 and Figure 5, groove 10
May be arranged as: groove 10 includes the size first concave part 12 more than alignment pin 11 diameter of width, and width
The size in direction is equal to the second concave part 13 of alignment pin 11 diameter, and before hitch is even hung, alignment pin 11 stretches into one end of groove 10
It is positioned at the first concave part 12；After hitch is even hung, alignment pin 11 stretches into one end of groove 10 and is positioned at the second concave part 13.
It should be noted that the present invention is by arranging alignment pin 11 at shell 2, groove 10 is set at interior insulator 3, and
Arrange recessed poor 10 and include the first concave part 12 and the second concave part 13 so that floating type multicore electrical cnnector is in train operation
Time, it is possible to play the skew compensated between docking hitch in axial rotation direction, reduce the abrasion of moving contact 1 with this further, and
Interior insulator 3 can be made return is automatically rotated when coupler-uncoupling.
Preferably, as shown in Fig. 4 or Fig. 5, in order to make alignment pin 11 returning quickly to the first concave part when coupler-uncoupling
In 12, and reduce the impact occurred with groove 4 side arm, can arrange between the first concave part 12 and the second concave part 13 smoothed
Cross.For above-mentioned first concave part 12 and the structure of the second concave part 13, particularly as follows:, as shown in Figure 4, the first concave part 12 He
Second concave part 13 constitutes similar fan-shaped structure；As it is shown in figure 5, the first concave part 12 is rectangular channel, the second concave part 13
Two sides are cambered surface, and tangent with the two sides of the first concave part 12 with the junction of the first concave part 12.
It should be noted that by the second contact surface 4 and the 3rd contact surface 15 are set to the conical surface, it is fixed to arrange at shell 2
Position pin 11, arranges groove 10 at interior insulator 3, and arranges recessed poor 10 and include the first concave part 12 and the second concave part 13, and one
Aspect is when train operation, and interior insulator 3 can compensate for docking hitch gap on X, Y, Z and axial-rotation direction, enters one
Step reduces the abrasion of moving contact 1, it is ensured that the stability of signal transmission；On the other hand, interior insulator 3 can be made when coupler-uncoupling
Self-return, just can make the present invention be directly used in the even extension of hitch next time with this without manually adjusting.
Preferably, as depicted in figs. 1 and 2, in order to ensure sealing higher between interior insulator 3 and shell 2, interior absolutely
Edge body 3 install contact 1 one end can sheathed dust cover 14, and be provided with for installing between dust cover 14 and interior insulator 3
The end ring 5 of dust cover.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, the use process of the present invention is as follows；
When hitch is even hung, end face 8 relative motion even hung by the hitch of two docking hitches, promotes the first of two interior insulators 3
Contact surface 4 centering contact also mutually extrudes so that interior insulator 3 overcome the resistance of flexible member 6 along shell axial shrinkage,
Fit completely until end face 8 even hung by the hitch of two docking hitches.
During train operation, the hitch of two docking hitches is even hung and can be produced gap between end face 8, and interior insulator 3 is by elastic unit
Under the effect of part 6 flexible in shell 2, and the hitch compensating two docking hitches even hangs between end face 8 along current of traffic
Gap.Interior insulator 3, by the alignment pin 11 skew in the second concave part 13 (as shown in Fig. 4 or Fig. 5), compensates two to picking up
The hitch of hook is even hung between end face 8 and is axially rotated the gap on direction.
During coupler-uncoupling, interior insulator 3 stretches out return under the effect of flexible member 6.During, interior insulator 3 is with outer
Conical surface contact is passed through so that interior insulator 3 realizes accurate return in the X, Y, Z direction between shell 2.The lower end of alignment pin 11 from
Second concave part 13 moves to the first concave part 12 so that interior insulator 3 realizes the accurate return in rotation direction.
Claims (10)
1. a floating type multicore electrical cnnector, between hitch, the company of electrical system hangs, including for connecting two adjacent cars
Multiple contacts (1) of hook, and the insulator of contact (1) is installed, it is characterised in that: outside insulator includes being fixed on hitch
Shell (2), and the interior insulator (3) being sheathed in shell (2), be connected between interior insulator (3) with shell (2) and have elastic component
(6), when hitch is even hung, two docking hitches are close to, and interior insulator (3) overcomes flexible member under the pressure of the first contact surface (4)
(6) resistance shrinks；During coupler-uncoupling, interior insulator (3) return under the effect of flexible member (6).
Floating type multicore electrical cnnector the most according to claim 1, it is characterised in that: interior insulator (3) is towards adjacent
One end end face of hitch is the first contact surface (4), and contact (1) is arranged on the first contact surface (4), and the first contact surface (4) stretches out
End face (8) even hung by hitch, and the first contact surface (4) is even hung with the hitch of adjacent hitch laminating with when connecting for hitch on hitch and hang
Vertical dimension between end face (8) docks the maximal clearance between hitch more than or equal to during train operation two.
Floating type multicore electrical cnnector the most according to claim 1 and 2, it is characterised in that: flexible member (6) is socketed in
On interior insulator (3), flexible member (6) one end is connected with interior insulator (3), and the other end is connected with shell (2).
Floating type multicore electrical cnnector the most according to claim 1 and 2, it is characterised in that: interior insulator (3) lateral surface
On to be formed can be second contact surface (7) of adjacent hitch axial alignment, shell (2) inner side is formed corresponding to the second contact surface
(7) the 3rd contact surface (15), the second contact surface (7) and the 3rd contact surface (15) are can to paste under the pressure of flexible member (6)
The conical surface closed, the centrage of the conical surface is parallel with interior insulator (3) telescopic direction, so that the axial alignment of adjacent hitch.
Floating type multicore electrical cnnector the most according to claim 4, it is characterised in that: the second contact surface (7) and the 3rd
Contact surface (15) is taper seat or pyramidal surface.
6. according to the floating type multicore electrical cnnector described in claim 1,2 or 5, it is characterised in that: open on shell (2) side
Being provided with the positioning through hole (9) that can pass through alignment pin (11), interior insulator (3) is provided with groove (10) corresponding to positioning through hole (9),
The length direction of groove (10) is parallel with the telescopic direction of interior insulator (3), and alignment pin (11) is through positioning through hole (9) and stretches into
To groove (10), with the insulator (3) axial rotation before hitch is even hung in limiting.
Floating type multicore electrical cnnector the most according to claim 6, it is characterised in that: groove (10) is rectangular channel, fixed
One end sidewall that groove (10) is stretched in position pin (11) is tangent with groove (10) two sidewalls in the direction of the width.
Floating type multicore electrical cnnector the most according to claim 6, it is characterised in that: groove (10) includes width
Size more than first concave part (12) of alignment pin (11) diameter, and the size of width is equal to alignment pin (11) diameter
The second concave part (13), before hitch is even hung, alignment pin (11) stretches into one end of groove (10) and is positioned at the first concave part (12)；
After hitch is even hung, alignment pin (11) stretches into one end of groove (10) and is positioned at the second concave part (13).
Floating type multicore electrical cnnector the most according to claim 8, it is characterised in that: the first concave part (12) and second
Concave part seamlessly transits between (13).
10. according to the floating type multicore electrical cnnector described in claim 1,2,5,7,8 or 9, it is characterised in that: interior insulator
(3) one end installing contact (1) is arranged with dust cover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824173.4A CN106252987B (en) | 2016-09-14 | 2016-09-14 | Floating type multicore electrical cnnector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824173.4A CN106252987B (en) | 2016-09-14 | 2016-09-14 | Floating type multicore electrical cnnector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106252987A true CN106252987A (en) | 2016-12-21 |
| CN106252987B CN106252987B (en) | 2018-06-08 |
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ID=57599709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610824173.4A Active CN106252987B (en) | 2016-09-14 | 2016-09-14 | Floating type multicore electrical cnnector |
Country Status (1)
| Country | Link |
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| CN (1) | CN106252987B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069283A (en) * | 2017-06-14 | 2017-08-18 | 四川普诺顿斯电子科技有限公司 | A kind of car body electric connector |
| CN109066227A (en) * | 2018-08-06 | 2018-12-21 | 四川永贵科技有限公司 | A kind of hitch connector with network function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2661521Y (en) * | 2003-09-21 | 2004-12-08 | 李万发 | Automatic connector for train wind power |
| CN104358953B (en) * | 2014-11-04 | 2017-02-22 | 南车戚墅堰机车车辆工艺研究所有限公司 | Air hose connector for tight-lock coupler |
| CN104852207B (en) * | 2015-05-27 | 2017-11-14 | 南京康尼科技实业有限公司 | A kind of float connector for rail traffic vehicles |
-
2016
- 2016-09-14 CN CN201610824173.4A patent/CN106252987B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069283A (en) * | 2017-06-14 | 2017-08-18 | 四川普诺顿斯电子科技有限公司 | A kind of car body electric connector |
| CN109066227A (en) * | 2018-08-06 | 2018-12-21 | 四川永贵科技有限公司 | A kind of hitch connector with network function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106252987B (en) | 2018-06-08 |
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