CN210326158U - Screw anticreep binding post and fire alarm - Google Patents
Screw anticreep binding post and fire alarm Download PDFInfo
- Publication number
- CN210326158U CN210326158U CN201921808462.0U CN201921808462U CN210326158U CN 210326158 U CN210326158 U CN 210326158U CN 201921808462 U CN201921808462 U CN 201921808462U CN 210326158 U CN210326158 U CN 210326158U
- Authority
- CN
- China
- Prior art keywords
- screw
- sheet
- locking
- conductive pressing
- conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
The utility model relates to a screw anti-drop wiring terminal and a fire alarm, which comprises a conductive pressing sheet, a locking sheet and a screw which runs through the conductive pressing sheet and the locking sheet; the screw cap of the screw is arranged on one side of the conductive pressing sheet, which is far away from the locking sheet; the conductive pressing sheet is provided with a through hole; the diameter of the through hole is larger than that of the screw rod of the screw and smaller than that of the screw cap of the screw; the locking sheet is provided with a threaded hole; the thickness of the conductive pressing sheet is smaller than the width of the tool withdrawal groove of the screw; the conductive pressing sheet is fixedly provided with a plurality of barbs; the barbs are circumferentially distributed along the edge of the through hole; one end of the barb close to the locking sheet protrudes out of the side face of the conductive pressing sheet facing the locking sheet; in the process of reducing the gap between the conductive pressing sheet and the locking sheet by reversely rotating the screw or the locking sheet, the locking sheet extrudes one end of the barb close to the locking sheet and presses the barb into the tool withdrawal groove of the screw, and the part of the barb entering the tool withdrawal groove of the screw clamps the screw to enable the screw to be difficult to fall off from the conductive pressing sheet, so that the wiring is convenient.
Description
Technical Field
The utility model relates to a wiring technical field, more specifically say, relate to a screw anticreep binding post and fire alarm.
Background
The fire alarm comprises a fire alarm body and a base which are detachably connected with each other, wherein a plurality of conductive elastic sheets are arranged on the fire alarm body, a plurality of wiring terminals for connecting external cables are arranged on the base, the plurality of wiring terminals and the plurality of conductive elastic sheets are in one-to-one correspondence, the wiring terminals generally comprise conductive pressing sheets, locking sheets and screws which penetrate through the conductive pressing sheets and the locking sheets, when in wiring, the screw is screwed to adjust the distance between the conductive pressing sheet and the locking sheet so as to conveniently plug one end of the cable between the conductive pressing sheet and the locking sheet and fix the cable, and then the fire alarm body is arranged on the base, in the process, the conductive elastic sheet is contacted with the conductive pressing sheet so as to realize the connection between the external cable and the fire alarm body, however, the screw on the existing terminal is easy to fall off in the screwing process, and the connection is inconvenient.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a screw anticreep binding post and fire alarm are provided.
The utility model provides a technical scheme that its technical problem adopted is:
on one hand, the screw anti-drop wiring terminal is provided, and comprises a conductive pressing sheet, a locking sheet and a screw penetrating through the conductive pressing sheet and the locking sheet; the screw cap of the screw is arranged on one side of the conductive pressing sheet, which is far away from the locking sheet; the conductive pressing sheet is provided with a through hole matched with the screw; the diameter of the through hole is larger than that of the screw rod of the screw and smaller than that of the screw cap of the screw; the locking sheet is provided with a threaded hole matched with the screw; the thickness of the conductive pressing sheet is smaller than the width of the tool withdrawal groove of the screw; the conductive pressing sheet is fixedly provided with a plurality of barbs matched with the tool withdrawal grooves of the screws; the barbs are distributed along the periphery of the through hole in a circumferential manner; one end of the barb close to the locking sheet protrudes out of the side face of the conductive pressing sheet facing the locking sheet; one end of the barb close to the locking sheet inclines towards the inside of the through hole.
The screw anti-drop connecting terminal of the utility model is characterized in that the side of the locking piece facing to the conductive pressing piece is provided with a guide groove for guiding the barb; the longitudinal section of the guide groove is trapezoidal; the upper bottom of the trapezoid is closer to the conductive pressing sheet than the lower bottom of the trapezoid; the threaded hole is formed in the bottom of the guide groove.
Screw anticreep binding post, wherein, the side surface of barb with the inner wall of through-hole links firmly.
Screw anticreep binding post, wherein, electrically conductive preforming orientation one side of stay has set firmly the line ball arch.
Screw anticreep binding post, wherein, the line ball arch by electrically conductive preforming punching press forms.
Screw anticreep binding post, wherein, the stay orientation the side of electrically conductive preforming is equipped with anti-skidding line.
Screw anticreep binding post, wherein, the stay deviates from the side of electrically conductive preforming also is equipped with anti-skidding line.
On the other hand, the fire alarm is provided based on the screw anti-falling wiring terminal, and comprises a fire alarm body and a base for mounting the fire alarm body; the fire alarm body is provided with a conductive elastic sheet; the base is fixedly provided with an enclosure frame for mounting the screw anti-falling wiring terminal; the conductive pressing sheet is fixedly arranged in the enclosure frame; the conductive pressing sheet, the surrounding frame and the base enclose a movable space of the locking sheet; the locking sheet is a polygonal sheet; an anti-rotation strip for limiting the locking sheet to rotate is fixedly arranged in the surrounding frame; the anti-rotation strip is arranged at the side of the locking sheet; the enclosure frame is provided with a cable inlet for a cable to enter.
The fire alarm of the utility model, wherein, the conductive pressing sheet is fixedly provided with two mounting sheets; the two mounting sheets are oppositely arranged on two sides of the locking sheet; elastic clamping teeth are fixedly arranged on one sides of the two mounting pieces, which are far away from each other; the inner side surface of the surrounding frame is provided with a clamping groove matched with the elastic clamping tooth; a plurality of supporting plates for supporting the conductive pressing sheet are fixedly arranged in the surrounding frame; the supporting plate is arranged between the mounting plate and the locking plate; the anti-rotation strip is also arranged between the mounting plate and the locking plate.
The beneficial effects of the utility model reside in that: during wiring, firstly rotating the screw or the locking sheet to increase the gap between the conductive pressing sheet and the locking sheet until the gap is enough to accommodate the wiring end of the cable, then plugging the wiring end of the cable into the gap between the conductive pressing sheet and the locking sheet, and finally reversely rotating the screw or the locking sheet to reduce the gap between the conductive pressing sheet and the locking sheet until the wiring end of the cable is pressed tightly; in the process of reversely rotating the screw or the locking sheet to reduce the gap between the conductive pressing sheet and the locking sheet until the wiring end of the cable is pressed tightly, the locking sheet extrudes one end of the barb close to the locking sheet and presses the barb into the tool withdrawal groove of the screw, and the part of the barb entering the tool withdrawal groove of the screw clamps the screw so that the screw is not easy to fall off from the conductive pressing sheet and is convenient for wiring; one end of the barb close to the locking sheet inclines towards the inside of the through hole, so that the barb is conveniently pressed into a tool withdrawal groove of the screw.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic structural view of a screw anti-drop terminal according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a screw anti-drop terminal according to a preferred embodiment of the present invention;
fig. 3 is a cross-sectional view of the screw retaining terminal according to the preferred embodiment of the present invention;
fig. 4 is a schematic structural view of a conductive pressing sheet of the screw anti-drop terminal according to the preferred embodiment of the present invention;
fig. 5 is a schematic structural view of a conductive pressing sheet of the screw anti-drop terminal according to the preferred embodiment of the present invention;
fig. 6 is a cross-sectional view of the conductive sheet of the screw drop-off prevention terminal according to the preferred embodiment of the present invention;
fig. 7 is a schematic structural view of a locking piece of the screw anti-drop terminal according to the preferred embodiment of the present invention;
FIG. 8 is a schematic structural view of a fire alarm device according to a preferred embodiment of the present invention (with the fire alarm device body hidden);
FIG. 9 is a cross-sectional view of the fire alarm device of the preferred embodiment of the present invention (after hiding the fire alarm device body);
fig. 10 is a schematic structural view of a fire alarm device according to a preferred embodiment of the present invention (after hiding the fire alarm device body, the screws and the conductive pressing sheet).
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The structure of the screw anti-drop wiring terminal according to the preferred embodiment of the present invention is schematically shown in fig. 1, and refer to fig. 2 to 7; comprises a conductive pressing sheet 2, a locking sheet 3 and a screw 1 penetrating through the conductive pressing sheet 2 and the locking sheet 3; the screw cap 10 of the screw 1 is arranged on one side of the conductive pressing sheet 2, which is far away from the locking sheet 3; the conductive pressing sheet 2 is provided with a through hole 20 matched with the screw 1; the diameter of the through hole 20 is larger than the major diameter of the screw rod 12 of the screw 1 and smaller than the diameter of the screw cap 10 of the screw 1; the locking sheet 3 is provided with a threaded hole 30 matched with the screw 1; the thickness of the conductive pressing sheet 2 is smaller than the width of the tool withdrawal groove 11 of the screw 1; the conductive pressing sheet 2 is fixedly provided with a plurality of barbs 5 matched with the tool withdrawal grooves 11 of the screws 1; a plurality of barbs 5 are circumferentially distributed along the edge of the through hole 20; one end of the barb 5 close to the locking sheet 3 protrudes out of the side surface of the conductive pressing sheet 2 facing the locking sheet 3; one end of the barb 5 close to the locking sheet 3 inclines towards the inside of the through hole 20; during wiring, firstly rotating the screw 1 or the locking sheet 3 to increase the gap between the conductive pressing sheet 2 and the locking sheet 3 until the gap is enough to accommodate the wiring end of the cable, then plugging the wiring end of the cable into the gap between the conductive pressing sheet 2 and the locking sheet 3, and finally reversely rotating the screw 1 or the locking sheet 3 to reduce the gap between the conductive pressing sheet 2 and the locking sheet 3 until the wiring end of the cable is pressed tightly; in the process of reversely rotating the screw 1 or the locking sheet 3 to reduce the gap between the conductive pressing sheet 2 and the locking sheet 3 until the wiring end of the cable is pressed tightly, the locking sheet 3 extrudes one end of the barb 5 close to the locking sheet 3 and presses the barb into the tool withdrawal groove 11 of the screw 1, and the part of the barb 5 entering the tool withdrawal groove 11 of the screw 1 clamps the screw 1 so that the screw 1 is not easy to fall off from the conductive pressing sheet 2, thereby facilitating wiring; one end of the barb 5 close to the locking piece 3 is inclined towards the inside of the through hole 20 and is pressed into the tool withdrawal groove 11 of the screw 1.
Preferably, the number of barbs 5 is 3, 3 barbs 5 being evenly distributed along the edge of the through hole 20.
Preferably, the barbs 5 are made of plastic material; the barb 5 is made of plastic materials and can be deformed obviously without being damaged, so that one end of the barb 5 close to the locking sheet 3 can be deformed into the tool withdrawal groove 11 of the screw 1 under the extrusion of the locking sheet 3 without being broken, and the reliability is high.
Further preferably, the material of the barbs 5 is low carbon a3 steel.
As shown in fig. 3 and 7, the side of the locking plate 3 facing the conductive pressing plate 2 is provided with a guide groove 31 for guiding the barb 5; the longitudinal section of the guide groove 31 is trapezoidal; the upper bottom of the trapezoid is closer to the conductive pressing sheet 2 than the lower bottom of the trapezoid; the bottom of the guide groove 31 is provided with a threaded hole 30; in the process that the locking sheet 3 presses one end of the barb 5 close to the locking sheet 3 and presses the barb into the tool withdrawal groove 11 of the screw 1, one end of the barb 5 close to the locking sheet 3 enters the guide groove 31 and bends towards the tool withdrawal groove 11 of the screw 1 under the guiding action of the guide groove 31.
As shown in fig. 3 to 6, the side surfaces of the barbs 5 are fixedly attached to the inner wall of the through-hole 20; the connection area of the barb 5 and the through hole 20 is large, and the connection is firmer.
As shown in fig. 2 and fig. 4 to 6, a pressing protrusion 21 is fixedly disposed on one side of the conductive pressing sheet 2 facing the locking sheet 3; after the wiring end of cable is compressed tightly by electrically conductive preforming 2 and stay 3, the protruding 21 pressure line is pressed the part that the cable is close to its wiring end and is made it crooked to the direction of stay 3, can receive the frictional force that comes from the protruding 21 of line ball when the cable is deviate from, and difficult following is deviate from between electrically conductive preforming 2 and the stay 3, and the wiring reliability is high.
As shown in fig. 2 and fig. 4 to 6, the pressing projection 21 is stamped from the conductive pressing sheet 2; the manufacturing is convenient and the cost is low.
As shown in fig. 1, 2, 3 and 7, the side of the locking piece 3 facing the conductive pressing piece 2 is provided with an anti-slip pattern 32; the friction force between the locking sheet 3 and the wiring end of the cable is increased due to the arrangement of the anti-slip grains 32, so that the wiring end of the cable is not easy to separate from the conductive pressing sheet 2 and the locking sheet 3, and the wiring reliability is high.
As shown in fig. 1, 2, 3 and 7, the side of the locking piece 3 away from the conductive pressing piece 2 is also provided with anti-slip threads 32; during the binding post equipment, need wear to locate electrically conductive preforming 2 earlier on screw 1 and twist stay 3 on screw 1 again, moreover, the side that stay 3 was equipped with anti-skidding line 21 should be towards electrically conductive preforming 2, whether the anti-skidding line 32 of side is inoperative, all set up anti-skidding line 32 on the two sides of stay 3, it is equipped with anti-skidding line 32 to need not to distinguish which side when the equipment, directly with stay 3 screw 1 on can, this kind of structure not only can prevent slow-witted but also can improve the packaging efficiency.
The structural schematic diagram of the fire alarm device of the preferred embodiment of the present invention (after hiding the fire alarm device body) is shown in fig. 8, and referring to fig. 9 and fig. 10, the fire alarm device comprises a fire alarm device body (not shown in the figure) and a base 6 for mounting the fire alarm device body; the fire alarm body is provided with a conductive elastic sheet (not shown in the figure); the base 6 is fixedly provided with an enclosure frame 9 for mounting the screw anti-drop wiring terminal; the conductive pressing sheet 2 is fixedly arranged in the surrounding frame 9; the conductive pressing sheet 2, the surrounding frame 9 and the base 6 surround to form a movable space of the locking sheet 3; the locking sheet 3 is a polygonal sheet; an anti-rotation strip 8 for limiting the rotation of the locking sheet 3 is fixedly arranged in the surrounding frame 9; the anti-rotation strip 8 is arranged at the side of the locking sheet 3; the enclosure frame 9 is provided with a cable inlet 91 for a cable to enter; during wiring, the screw 1 is rotated firstly, and the locking sheet 3 moves away from the conductive pressing sheet 2 under the matching action of the anti-rotating strip 8 until the gap between the locking sheet 3 and the conductive pressing sheet 2 is enough for accommodating the wiring end of the cable, and certainly, if the gap between the locking sheet 3 and the conductive pressing sheet 2 is enough, the step can be omitted; then the wiring terminal of the cable is plugged into the gap between the locking sheet 3 and the conductive pressing sheet 2 through the cable inlet 91; then, the screw 1 is rotated reversely, under the matching action of the anti-rotating strip 8, the locking sheet 3 moves towards the conductive pressing sheet 2 until the wiring end of the cable is pressed tightly, in the process, the locking sheet 3 extrudes one end of the barb 5 close to the locking sheet 3 and presses the barb 5 into the tool withdrawal groove 11 of the screw 1, and the part of the barb 5 entering the tool withdrawal groove 11 of the screw 1 limits the movement of the screw 1 and prevents the screw 1 from falling off; finally, the fire alarm body is arranged on the base 6, the conductive elastic sheet is in contact conduction with the conductive pressing sheet 2, and wiring is completed; the wiring is convenient.
As shown in fig. 1 to 10, two mounting pieces 4 are fixedly arranged on the conductive pressing piece 2; the two mounting sheets 4 are oppositely arranged at two sides of the locking sheet 3; one side of each of the two mounting pieces 4, which is far away from each other, is fixedly provided with an elastic latch 40; the inner side surface of the surrounding frame 9 is provided with a clamping groove 90 matched with the elastic clamping tooth 40; a plurality of supporting plates 7 for supporting the conductive pressing sheets 2 are fixedly arranged in the surrounding frame 9; the support plate 7 is arranged between the mounting plate 4 and the locking plate 3; the anti-rotation strip 8 is also arranged between the mounting plate 4 and the locking plate 3; when installing screw anticreep binding post on enclosing frame 9, only need to enclose frame 9 and will electrically conduct preforming 2 and move into and enclose frame 9 in, when electrically conducting preforming 2 contact backup pad 7, thereby accomplish the installation in draw-in groove 90 can be gone into simultaneously to elasticity latch 40 on the installation piece 4, easy operation.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (9)
1. A screw anti-drop wiring terminal is characterized by comprising a conductive pressing sheet, a locking sheet and a screw penetrating through the conductive pressing sheet and the locking sheet; the screw cap of the screw is arranged on one side of the conductive pressing sheet, which is far away from the locking sheet; the conductive pressing sheet is provided with a through hole matched with the screw; the diameter of the through hole is larger than that of the screw rod of the screw and smaller than that of the screw cap of the screw; the locking sheet is provided with a threaded hole matched with the screw; the thickness of the conductive pressing sheet is smaller than the width of the tool withdrawal groove of the screw; the conductive pressing sheet is fixedly provided with a plurality of barbs matched with the tool withdrawal grooves of the screws; the barbs are distributed along the periphery of the through hole in a circumferential manner; one end of the barb close to the locking sheet protrudes out of the side face of the conductive pressing sheet facing the locking sheet; one end of the barb close to the locking sheet inclines towards the inside of the through hole.
2. The screw drop-off prevention wiring terminal as claimed in claim 1, wherein a guide groove for guiding the barb is formed on a side surface of the locking piece facing the conductive pressing piece; the longitudinal section of the guide groove is trapezoidal; the upper bottom of the trapezoid is closer to the conductive pressing sheet than the lower bottom of the trapezoid; the threaded hole is formed in the bottom of the guide groove.
3. The screw drop-off prevention connection terminal of claim 1, wherein a side surface of the barb is fixedly coupled to an inner wall of the through-hole.
4. The screw drop-off prevention wiring terminal as claimed in claim 1, wherein a pressing line protrusion is fixedly provided at a side of the conductive pressing sheet facing the locking sheet.
5. The screw drop-off prevention terminal according to claim 4, wherein the crimping projection is stamped from the conductive tab.
6. The screw retaining terminal according to claim 1, wherein the side of the locking piece facing the conductive pressing piece is provided with an anti-slip thread.
7. The screw retaining connection terminal according to claim 6, wherein the side of the locking piece facing away from the conductive pressing piece is also provided with anti-slip threads.
8. A fire alarm device, based on any one of the screw anti-drop wiring terminals of claims 1-7, characterized by comprising a fire alarm device body and a base for mounting the fire alarm device body; the fire alarm body is provided with a conductive elastic sheet; the base is fixedly provided with an enclosure frame for mounting the screw anti-falling wiring terminal; the conductive pressing sheet is fixedly arranged in the enclosure frame; the conductive pressing sheet, the surrounding frame and the base enclose a movable space of the locking sheet; the locking sheet is a polygonal sheet; an anti-rotation strip for limiting the locking sheet to rotate is fixedly arranged in the surrounding frame; the anti-rotation strip is arranged at the side of the locking sheet; the enclosure frame is provided with a cable inlet for a cable to enter.
9. The fire alarm of claim 8, wherein two mounting tabs are fixedly arranged on the conductive pressing piece; the two mounting sheets are oppositely arranged on two sides of the locking sheet; elastic clamping teeth are fixedly arranged on one sides of the two mounting pieces, which are far away from each other; the inner side surface of the surrounding frame is provided with a clamping groove matched with the elastic clamping tooth; a plurality of supporting plates for supporting the conductive pressing sheet are fixedly arranged in the surrounding frame; the supporting plate is arranged between the mounting plate and the locking plate; the anti-rotation strip is also arranged between the mounting plate and the locking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808462.0U CN210326158U (en) | 2019-10-25 | 2019-10-25 | Screw anticreep binding post and fire alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808462.0U CN210326158U (en) | 2019-10-25 | 2019-10-25 | Screw anticreep binding post and fire alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210326158U true CN210326158U (en) | 2020-04-14 |
Family
ID=70134528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921808462.0U Active CN210326158U (en) | 2019-10-25 | 2019-10-25 | Screw anticreep binding post and fire alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210326158U (en) |
-
2019
- 2019-10-25 CN CN201921808462.0U patent/CN210326158U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210326158U (en) | Screw anticreep binding post and fire alarm | |
| CN110690586A (en) | Screw anti-falling wiring terminal, fire alarm and wiring method | |
| CN110854552B (en) | Wire pressing terminal | |
| CN204680839U (en) | Electric power snap joint | |
| CN206099215U (en) | Electric power transmission is cable fixing device for cable | |
| CN219833196U (en) | Energy storage connector | |
| CN201307646Y (en) | Cables and cords connecting piece | |
| CN217823500U (en) | Copper conductor binding post suitable for new energy automobile | |
| CN108493637B (en) | Screw-drop-proof binding post for fire alarm | |
| CN209071162U (en) | A kind of clamping Wiring type safety contact switch | |
| CN110176118B (en) | Binding post, fire alarm and binding method | |
| CN210200995U (en) | Wiring box structure convenient to wire | |
| CN210867391U (en) | Motor casing convenient to cable installation | |
| CN104241883B (en) | Type low-voltage cable Quick Connect Kit | |
| CN108173015B (en) | Wiring component and wiring device | |
| CN212648522U (en) | Boosting type direct-insert wiring terminal | |
| CN212257787U (en) | Plug convenient to solidus | |
| CN204577616U (en) | Prevent the connecting cable clamp that main line comes off | |
| CN215221137U (en) | Quick-connection type wiring terminal | |
| CN216959803U (en) | Photovoltaic junction box | |
| CN212182250U (en) | Novel clamp plate type wiring terminal | |
| CN221009379U (en) | Torsion terminal | |
| CN215645906U (en) | Wire harness protection piece | |
| CN215580329U (en) | Compression type cable quick connector | |
| CN216355112U (en) | Voltage-free anti-drop wire connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Patentee after: Shenzhen hi tech investment Sanjiang Electronics Co.,Ltd. Address before: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Patentee before: SHENZHEN FANHAI SANJIANG ELECTRONICS Co.,Ltd. |