CN104319432B - Waveguide pipe end face butt joint clamp and butt joint structure - Google Patents
Waveguide pipe end face butt joint clamp and butt joint structure Download PDFInfo
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- CN104319432B CN104319432B CN201410640538.9A CN201410640538A CN104319432B CN 104319432 B CN104319432 B CN 104319432B CN 201410640538 A CN201410640538 A CN 201410640538A CN 104319432 B CN104319432 B CN 104319432B
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Abstract
The invention provides a waveguide pipe end face butt joint clamp and a butt joint structure. The butt joint clamp comprises a base provided with a containing cavity, wherein an opening towards waveguide pipes and a through groove used for containing the waveguide pipes are formed in the base, the containing cavity is communicated with the through groove through the opening, two clamping blocks which are oppositely arranged in the axial direction of the waveguide pipes and can oppositely move in the axial direction of the waveguide pipes are arranged in the containing cavity, each clamping block is provided with a limiting part which is exposed out of the opening and located in the through groove, and the limiting parts are used for being matched with limiting grooves formed in the peripheral faces of the waveguide pipes. The end faces of the two waveguide pipes can be in fast butt joint through the opposite movement of the two clamping blocks, in the axial direction of the waveguide pipes, in the base, operation is easy and convenient, no holes need to be formed in the waveguide pipes and no external forces needs to be applied to the waveguide pipes, the end faces of the waveguide pipes are in compact butt joint, no connecting gaps exist, and therefore signal leakage and signal interference are avoided and signal transmission accuracy is guaranteed.
Description
Technical field
The present invention relates to waveguide ends face docking field, more particularly to a kind of waveguide ends are in the face of welding fixture and to access node
Structure.
Background technology
Waveguide is a kind of hollow, metal catheter that inwall is very bright and clean, and it is used for transmitting uhf electromagnetic wave, passes through
Waveguide, pulse signal can be sent to destination with minimum loss.The size of waveguide bore is because of institute's transmission signal
Wavelength and different, be used for centimetre radio art such as the radio communication involving millimeter wave, radar, navigation.Waveguide is producing
When, its length has certain limitation, therefore when waveguide is put into practical application, needs the end of two adjacent waveguides
In the face of picking up.
At present, the docking structure of two adjacent waveguide end faces is: as shown in figure 1, the end of two waveguides 1 is all provided with
There is the adpting flange 101 extending radially outwardly along waveguide 1 for the circle, two adpting flanges 101 all offer four along even
The circumferential equally distributed hole 102 of acting flange 101；In docking, the end face of two waveguides 1 is alignd and adjustment position, makes two
Aliging one by one in four holes 102 on individual adpting flange 101, then all wears bolt 2 side using bucketing in each hole 102
Formula is fixed, thus completing the docking of two waveguide end faces.But, there is following lacking in above-mentioned waveguide ends face docking structure
Fall into:
1st, it is higher to the flatness requirement of waveguide end face, the relative increase production difficulty of waveguide with produce into
This；
2nd, it has certain requirement to the order of connection of bolt and dynamics, if the order of connection of bolt and dynamics are uneven
Even, easily cause two waveguide end faces and there is connection gap after docking, thus causing the leakage of radiofrequency signal；
3rd, it needs to punch on the adpting flange of waveguide, then reuses bolt bucketing, therefore destroys waveguide
The magnetic field of end face, and then the leakage of radiofrequency signal can be caused, lead to that undesirable radio frequency inverted signal occurs, signal transmission is caused
Certain interference, the final degree of accuracy affecting signal transmission.
Content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of no signal is revealed and no signal
The waveguide ends of interference are in the face of welding fixture and docking structure.
For achieving the above object, the present invention provides a kind of waveguide ends in the face of welding fixture, including the base being provided with cavity volume, institute
State base and be provided with one and be used for placing the groove of waveguide towards the opening of waveguide and one, described cavity volume passes through opening and groove
It is connected；It is provided with two axially opposing settings along waveguide and can be along the movement that is axially opposite of waveguide in described cavity volume
Gripping block, described gripping block is provided with the limiting section exposing at opening and being located in groove, and this limiting section is used for and is opened in
Stopper slot on waveguide outer peripheral face is adapted.
Further, be additionally provided with described cavity volume two along waveguide diametrically setting and can be along the footpath of waveguide
To the jacking block moving towards, between two jacking blocks and jacking block is that inclined-plane coordinates with gripping block to two gripping blocks.
Preferably, it is equipped with a rotating shaft paralleled with the axis of waveguide in described jacking block, the two ends of described rotating shaft are solid
Determine in the base, described jacking block can rotate around the axis；Also include a screw rod being located in base and jacking block, the end of this screw rod
It is threaded with a nut, the head of described screw rod and nut are respectively positioned at the outside of two jacking blocks, and the head of screw rod and top
Between block, it is equipped with one between nut and jacking block and is enclosed within the washer on screw rod.
Further, it is provided with least one guide finger paralleled with the axis of waveguide, described guiding in described cavity volume
The two ends of pin are fixing in the base, and described guide finger is located in two gripping blocks.
Preferably, it is provided with flexible member between two gripping blocks, this flexible member is enclosed within described guide finger；When two press from both sides
Tight block along waveguide when being axially opposite mobile, described flexible member is in the state compressed.
Preferably, described flexible member is spring.
The present invention also provides a kind of waveguide ends face docking structure, including two waveguides, also includes ripple as above
Catheter end, in the face of welding fixture, the outer peripheral face of described two waveguide ends all offers stopper slot, the end of two waveguides
It is respectively positioned in the groove of described base and the limiting section in two gripping blocks is located in the stopper slot of two waveguides respectively.
Preferably, described limiting section is in arc-shaped, and described stopper slot is a circumferential slot opening up along the circumference of waveguide.
As described above, waveguide ends according to the present invention, in the face of welding fixture and docking structure, have the advantages that
The present invention by two gripping blocks in base in axis of a waveguide upwards move towards to realize two waveguide ends
The rapid abutting joint in face, its simple to operation it is not necessary to waveguide is carried out perforate or apply external force, and waveguide ends face docking
Compact, connectionless gap, therefore no signal is revealed, no signal interference is it is ensured that the accuracy of signal transmission.
Brief description
Fig. 1 is the docking structure of two waveguides in prior art.
Fig. 2 is the structural representation of fitting structure faced by waveguide ends in the present invention.
Fig. 3 is the structural representation of welding fixture faced by waveguide ends in the present invention.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the a-a of Fig. 4 to sectional view.
Fig. 6 is the cut-away view of Fig. 3.
Fig. 7 is the top view of Fig. 6.
Component label instructions
1 waveguide
101 adpting flanges
102 holes
103 stopper slots
2 bolts
3 bases
31 cavity volumes
32 openings
33 grooves
34 base plates
35 cases
4 gripping blocks
41 limiting sections
42 first gripping blocks
43 second gripping blocks
5 jacking blocks
51 first jacking blocks
52 second jacking blocks
6 rotating shafts
7 screw rods
8 nuts
9 washers
10 guide fingers
11 flexible members
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., all only in order to coordinate specification to be taken off
The content shown, so that those skilled in the art understands and reads, is not limited to the enforceable qualifications of the present invention, therefore
Do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting the present invention
Under the effect that can be generated by and the purpose that can reach, all should still fall and obtain, in disclosed technology contents, the model that can cover
In enclosing.Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle " and " one " etc. term, be also only
Be easy to describe understands, and is not used to limit the enforceable scope of the present invention, being altered or modified, no substantive of its relativeness
Under change technology contents, when being also considered as the enforceable category of the present invention.
In the present embodiment, all directions are defined as follows: described left and right directions refers to the radial direction of waveguide 1, or as Fig. 6
Shown, w direction is left direction, and t direction is right direction；Described fore-and-aft direction refers to the axial direction of waveguide 1, or as Fig. 6 institute
Show, x direction is front direction, y direction is rear direction；Described above-below direction refers to the short transverse of base 3, or as Fig. 6 institute
Show, z direction is upper direction, u direction is lower direction.
As shown in Fig. 3 to Fig. 7, the present invention provides a kind of waveguide ends in the face of welding fixture, including the base being provided with cavity volume 31
3, described base 3 is provided with one and is used for placing the groove 33 of waveguide 1, described cavity volume 31 towards the opening 32 and of waveguide 1
It is connected with groove 33 by opening 32；It is provided with two axially opposing settings along waveguide 1 and can be along ripple in described cavity volume 31
The gripping block 4 being axially opposite movement of conduit 1, described gripping block 4 is provided with opening 32 to be exposed and is located in groove 33
Limiting section 41, this limiting section 41 is used for and the stopper slot 103 that is opened on waveguide 1 outer peripheral face is adapted.
The present invention also provides a kind of waveguide ends face docking structure, as shown in Fig. 2 including two waveguides 1 to be docked,
Also include waveguide ends as above in the face of welding fixture, the outer peripheral face of described two waveguide 1 ends all opens up limited location
Groove 103, the end of two waveguides 1 is respectively positioned in the groove 33 of described base 3 and 41 points of limiting section in two gripping blocks 4
Wei Yu not be in the stopper slot 103 of two waveguides 1.
When docking two waveguides 1, first two waveguides 1 are put in the groove 33 on base 3, and make two ripples
Stopper slot 103 on conduit 1 outer surface is leant with the limiting section 41 of two gripping blocks 4 respectively, and that is, limiting section 41 is positioned at spacing
In groove 103；Two gripping blocks 4 are made to be axially opposite movement, by the phase of limiting section 41 and stopper slot 103 along waveguide 1 afterwards
Mutually coordinate, gripping block 4 drives two waveguides 1 to move towards together, until the end face of two waveguides 1 is docking together.This
Invent welding fixture faced by the waveguide ends being related to and docking structure can quickly realize the docking of two waveguide 1 end faces, and two
After the end face docking of root waveguide 1, dock compact seamless between two end faces, it is also without on the end face of waveguide 1
Punching, therefore the magnetic field around waveguide 1 will not be destroyed, thus effectively anti-stop signal is revealed and peripheral signal interference, finally ensure
The accuracy of signal transmission.
Preferably, as shown in Figure 2 and Figure 5, described limiting section 41 is in arc-shaped, and described stopper slot 103 is one along waveguide 1
The circumferential slot that opens up of circumference, when limiting section 41 is located in stopper slot 103, limiting section 41 is big with the contact area of waveguide 1,
Thus can ensure that gripping block 4 drives stability and the accuracy of waveguide 1 movement.In addition, as shown in figure 5, the two of limiting section 41
End is done rounding and is processed, and to prevent when putting into waveguide 1 in base 3, the wedge angle position of limiting section 41 is outer to waveguide 1
Cause to wear and tear in surface.
Further, as shown in Figure 6 and Figure 7, it is additionally provided with two diametrically setting along waveguide 1 in described cavity volume 31
The jacking block 5 put and can move towards along the radial direction of waveguide 1, two gripping blocks 4 be located between two jacking blocks 5 and jacking block 5 with
Gripping block 4 coordinates for inclined-plane, and that is, jacking block 5 and the contact surface of gripping block 4 are an inclined-plane, between the axis of this inclined-plane and waveguide 1
At an angle.Specifically, two gripping blocks being oppositely arranged in front and back 4 are respectively the first gripping block 42 and the second gripping block
43, two about the jacking blocks 5 being oppositely arranged are respectively the first jacking block 51 and the second jacking block 52, and the first jacking block 51 is located at two folders
The left side of tight block 4, the second jacking block 52 is located at the right side of two gripping blocks 4；Wherein, the first jacking block 51 and the first gripping block 42 match
The inclined-plane closing tilts towards right front, and the inclined-plane that the first jacking block 51 is matched with the second gripping block 43 tilts towards right back, the second top
The inclined-plane that block 52 is matched with the first gripping block 42 tilts towards left front, and the second jacking block 52 is oblique with what the second gripping block 43 matched
Face left back；Therefore, when two jacking blocks 5 move towards on left and right directions (i.e. the radial direction of waveguide 1), by top
The inclined-plane cooperation of block 5 and clamping, makes two gripping blocks 4 move towards on fore-and-aft direction (i.e. the axial direction of waveguide 1), and then complete
Become the docking of two waveguide 1 end faces.
Preferably, as shown in Figure 6 and Figure 7, it is provided with what at least one axis with waveguide 1 was paralleled in described cavity volume 31
Guide finger 10, the two ends of described guide finger 10 are fixed in base 3, and described guide finger 10 is located in two gripping blocks 4；This reality
Apply in example, described guide finger 10 has two, is located in respectively at the left end of gripping block 4 and at right-hand member.Because guide finger 10 wears
In two gripping blocks 4, therefore gripping block 4 can and can only move back and forth along the axial direction of guide finger 10；In addition, guide finger 10
Axially parallel with the axis of waveguide 1, thus ensureing that gripping block 4 can and can only move back and forth along the axial direction of waveguide 1,
Ensure that gripping block 4 drives accuracy and the accuracy of waveguide 1 axial movement eventually, prevent between two waveguides 1 diametrically
Position skew occurs, is docking together accurately and in alignment with the end face ensureing two waveguides 1.
Further, it is provided with flexible member 11 between two gripping blocks 4, this flexible member 11 is enclosed within described guide finger 10
On；When two gripping blocks 4 are along waveguide 1 when being axially opposite mobile, described flexible member 11 is in the state compressed.When two
When individual gripping block 4 moves towards, flexible member 11 can play spacing and buffering effect, to prevent two waveguide 1 end faces from existing
The moment of docking, there is larger impulse force between the two.In the present embodiment, described flexible member 11 is a spring.
Preferably, as shown in Figure 6 and Figure 7, it is equipped with a rotating shaft paralleled with the axis of waveguide 1 in described jacking block 5
6, the two ends of described rotating shaft 6 are fixed in base 3, and described jacking block 5 can 6 rotation around the shaft；Also include one and be located in base 3 and top
Screw rod 7 in block 5, the end thread of this screw rod 7 is connected with a nut 8, and the head of described screw rod 7 and nut 8 are located at two respectively
The outside of individual jacking block 5, and between the head of screw rod 7 and jacking block 5, be equipped with one between nut 8 and jacking block 5 and be enclosed within screw rod 7
Washer 9；Described screw rod 7 is located at the top of rotating shaft 6.When docking the end face of two waveguides 1, waveguide 1 is put into base 3
In groove 33 and make gripping block 4 limiting section 41 be located at waveguide 1 stopper slot 103 in after, tighten screw rod 7, then screw rod 7 He
Nut 8 moves along left and right directions to middle；The head of screw rod 7 and nut 8 extrude two washers 9 from two ends respectively, make two
Washer 9 moves to middle also along left and right directions；Described washer 9 is contacted with the upper end of jacking block 5, and the lower end of jacking block 5 can be around
Rotating shaft 6 rotates, therefore when two washers 9 are along left and right directions to middle movement, washer 9, to middle extruding jacking block 5, makes jacking block 5
To intermediate, inclined centered on rotating shaft 6, that is, the upper end of the first jacking block 51 tilts to the right, and the upper end of the second jacking block 52 rolls to the left
Tiltedly；Two jacking blocks 5 extrude two gripping blocks 4 to middle in the lateral direction, then coordinated by the inclined-plane of jacking block 5 and gripping block 4,
Making two gripping blocks 4 in the longitudinal direction to middle mobile, thus clamping two waveguides 1, completing two waveguide 1 end faces
Butt-joint locking.When needing for the waveguide 1 of two docking to release connection, then Unscrew 7, in the work of flexible member 11 elastic force
With under so that gripping block 4, jacking block 5 and washer 9 is resetted.
Further, welding fixture faced by waveguide ends according to the present invention adopts symmetrical structure, i.e. two gripping blocks 4, two
Individual 5, two washers 9 of jacking block are all symmetrical arranged, therefore when tightening screw rod 7, the active force within fixture uniformly, makes two waveguides
1 end face is closely abutting together.In addition, for the ease of the installation of each part, as shown in figure 5, described base 3 is by base plate 34 He
Case 35 is constituted.
In sum, the application be capable of two waveguide 1 end faces quick, be closely abutting, and side simple to operate
Just it is not necessary to extra active force is applied to waveguide 1, also interference will not be produced to the magnetic field around waveguide 1 moreover it is possible to reduce
The error causing because of the difference of manual operation active force；Whole fixture adopts symmetrical structure, and produced extruding force is to referred to as
With, make uniform force during the docking of two waveguide ends faces, docking compact in case the interference of the leakage of stop signal and signal, it has
Good industrial prospect.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (8)
1. a kind of waveguide ends in the face of welding fixture it is characterised in that: include being provided with the base (3) of cavity volume (31), described base (3)
It is provided with one and is used for placing the groove (33) of waveguide (1) towards the opening (32) and of waveguide (1), described cavity volume (31) is led to
Cross opening (32) to be connected with groove (33)；Be provided with described cavity volume (31) two axially opposing settings along waveguide (1) and
Can along the gripping block (4) being axially opposite movement of waveguide (1), described gripping block (4) be provided with from opening (32) expose and
Limiting section (41) in groove (33), the stopper slot that this limiting section (41) is used for and is opened on waveguide (1) outer peripheral face
(103) it is adapted.
2. waveguide ends according to claim 1 in the face of welding fixture it is characterised in that: be additionally provided with two in described cavity volume (31)
The individual diametrically setting along waveguide (1) and the jacking block (5) that can move towards along the radial direction of waveguide (1), two gripping blocks
(4) it is located between two jacking blocks (5) and jacking block (5) is coordinated for inclined-plane with gripping block (4).
3. waveguide ends according to claim 2 in the face of welding fixture it is characterised in that: be equipped with one in described jacking block (5)
The rotating shaft (6) paralleled with the axis of waveguide (1), the two ends of described rotating shaft (6) are fixed in base (3), described jacking block (5)
Can (6) rotate around the shaft；Also include a screw rod (7) being located in base (3) and jacking block (5), the end thread of this screw rod (7)
It is connected with a nut (8), the head of described screw rod (7) and nut (8) are respectively positioned at the outside of two jacking blocks (5), and screw rod (7)
Head and jacking block (5) between, be equipped with one between nut (8) and jacking block (5) and be enclosed within the washer (9) on screw rod (7).
4. waveguide ends according to claim 1 in the face of welding fixture it is characterised in that: be provided with least in described cavity volume (31)
The guide finger (10) that a piece axis with waveguide (1) is paralleled, the two ends of described guide finger (10) are fixed in base (3),
Described guide finger (10) is located in two gripping blocks (4).
5. waveguide ends according to claim 4 in the face of welding fixture it is characterised in that: be provided between two gripping blocks (4)
Flexible member (11), this flexible member (11) is enclosed within described guide finger (10)；When two gripping blocks (4) are along waveguide (1)
When being axially opposite mobile, described flexible member (11) is in the state compressed.
6. waveguide ends according to claim 5 in the face of welding fixture it is characterised in that: described flexible member (11) is bullet
Spring.
7. a kind of waveguide ends face docking structure, including two waveguides (1) it is characterised in that: also include as claim 1-6
Waveguide ends described in any one, in the face of welding fixture, the outer peripheral face of described two waveguide (1) ends all offer stopper slot
(103), the end of two waveguides (1) is respectively positioned in the groove (33) of described base (3) and the limit on two gripping blocks (4)
Position portion (41) is located in the stopper slot (103) of two waveguides (1) respectively.
8. waveguide ends face docking structure according to claim 7 it is characterised in that: described limiting section (41) be in circular arc
Shape, described stopper slot (103) is a circumferential slot opening up along the circumference of waveguide (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640538.9A CN104319432B (en) | 2014-11-13 | 2014-11-13 | Waveguide pipe end face butt joint clamp and butt joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640538.9A CN104319432B (en) | 2014-11-13 | 2014-11-13 | Waveguide pipe end face butt joint clamp and butt joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104319432A CN104319432A (en) | 2015-01-28 |
| CN104319432B true CN104319432B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410640538.9A Active CN104319432B (en) | 2014-11-13 | 2014-11-13 | Waveguide pipe end face butt joint clamp and butt joint structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104319432B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI589890B (en) * | 2015-04-13 | 2017-07-01 | 台揚科技股份有限公司 | Holding apparatus |
| CN109202843B (en) * | 2018-09-29 | 2021-09-14 | 西安飞机工业（集团）有限责任公司 | Adjustable marking device and marking method for catheter part |
| CN112054270B (en) * | 2020-07-27 | 2022-06-10 | 中国电子科技集团公司第十三研究所 | Waveguide interface assembly interconnection structure |
| CN112337891A (en) * | 2020-11-26 | 2021-02-09 | 成都锦江电子系统工程有限公司 | Portable waveguide inner cavity ultrasonic cleaning device |
| CN115401403A (en) * | 2021-05-26 | 2022-11-29 | 深圳市鸿运鑫精密工业有限公司 | Inner diameter seamless butt joint processing technology for waveguide tube |
| CN115173019B (en) * | 2022-07-05 | 2024-05-17 | 成都西夏科技发展有限公司 | Waveguide processing apparatus |
| CN117117451B (en) * | 2023-10-24 | 2023-12-29 | 成都沃特塞恩电子技术有限公司 | Waveguide tube assembly |
| CN117438757B (en) * | 2023-12-21 | 2024-03-01 | 成都沃特塞恩电子技术有限公司 | Waveguide connecting assembly and microwave transmission device |
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|---|---|---|---|---|
| RU2127013C1 (en) * | 1998-02-04 | 1999-02-27 | Государственное унитарное предприятие Центральный научно-исследовательский институт "Гранит" | Small-sized, multiple-slot antenna |
| CN101071896A (en) * | 2006-05-10 | 2007-11-14 | 安德鲁公司 | Waveguide interface and method of manufacture |
| CN101813111A (en) * | 2008-12-08 | 2010-08-25 | 纽弗雷公司 | Clamp for corrugated tube |
| CN204144403U (en) * | 2014-11-13 | 2015-02-04 | 上海电缆研究所 | Waveguide ends is in the face of welding fixture and docking structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7436275B2 (en) * | 2006-06-27 | 2008-10-14 | Datapath, Inc. | Waveguide quick disconnect clamp |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2127013C1 (en) * | 1998-02-04 | 1999-02-27 | Государственное унитарное предприятие Центральный научно-исследовательский институт "Гранит" | Small-sized, multiple-slot antenna |
| CN101071896A (en) * | 2006-05-10 | 2007-11-14 | 安德鲁公司 | Waveguide interface and method of manufacture |
| CN101813111A (en) * | 2008-12-08 | 2010-08-25 | 纽弗雷公司 | Clamp for corrugated tube |
| CN204144403U (en) * | 2014-11-13 | 2015-02-04 | 上海电缆研究所 | Waveguide ends is in the face of welding fixture and docking structure |
Also Published As
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|---|---|
| CN104319432A (en) | 2015-01-28 |
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee after: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Patentee after: Shanghai Saikeli Photoelectric Technology Co.,Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE Research Institute Patentee before: SHANGHAI SECRI OPTICAL&ELECTRIC CABLE Co.,Ltd. |
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