CN109859990B - Load terminal of high-voltage direct-current relay - Google Patents
Load terminal of high-voltage direct-current relay Download PDFInfo
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- CN109859990B CN109859990B CN201910129716.4A CN201910129716A CN109859990B CN 109859990 B CN109859990 B CN 109859990B CN 201910129716 A CN201910129716 A CN 201910129716A CN 109859990 B CN109859990 B CN 109859990B
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- 238000003825 pressing Methods 0.000 claims abstract description 67
- 238000005476 soldering Methods 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 40
- 229910052802 copper Inorganic materials 0.000 claims description 40
- 239000010949 copper Substances 0.000 claims description 40
- 238000005219 brazing Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 description 12
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The invention discloses a load terminal of a high-voltage direct current relay, which comprises a connecting end and a leading-out end arranged on a relay ceramic cover, wherein the head part of the leading-out end is provided with a containing hole, the lower end of the connecting end can be adaptively inserted into the containing hole and is in threaded fit connection with the containing hole, the orifice of the containing hole of the leading-out end is connected with a pressing block through soldering by a soldering lug, the connecting end is provided with a limiting part which can be matched with the pressing block, and the lower end of the connecting end can be pressed in the containing hole through the matching of the pressing block and the limiting part so as to prevent the connecting end from falling off. The connecting end of the invention has larger maximum torque value, can meet the torque requirements of various screw thread specifications when in use, can press the lower end of the connecting end into the accommodating hole through the cooperation of the pressing block and the limiting part so as to prevent the lower end from falling off, and can be vertically connected to the leading-out end through the screw thread cooperation of the lower screw thread part and the small hole, thereby having good use reliability.
Description
Technical Field
The invention relates to the technical field of high-voltage direct-current relays, in particular to a load terminal of a high-voltage direct-current relay.
Background
At present, the load terminal of the high-voltage direct-current relay in the market mainly has the following structure: 1. the lead-out end made of oxygen-free copper is directly turned into an external thread form to form an external thread connecting end, the lead-out end needs to be soldered on a ceramic cover of the relay during production, the hardness of oxygen-free copper after high-temperature soldering can be reduced, the maximum torque born by the external thread connecting end can be reduced, the torque requirement can not be met during practical application, and therefore sliding teeth or breakage of a load terminal can be caused, and the service life of the relay is shortened. 2. The lead-out end of the oxygen-free copper material is fixed with the screw by adopting a thread compound, and the glue is easy to age and cause failure due to overhigh temperature of the lead-out end part during working. 3. The screw made of alloy copper is welded at the leading-out end of the oxygen-free copper material, the screw forms an external thread connecting end, the hardness of alloy copper (such as dispersed copper) is not obviously reduced after high-temperature brazing, but the screw made of alloy copper cannot meet the torque specification of all thread specifications, the screw with the thread specification of M10 can meet the torque requirement during use through a test, and the thread specifications of M8 and M5 cannot meet the torque requirement. And the load terminals in the structure 2 and the structure 3 can cause brazing failure when the torque born by the external thread leading-out end exceeds the maximum torque born by the external thread leading-out end in use, and the connecting end has the risk of falling off. Moreover, the perpendicularity of the end faces of the existing connecting end and the lead-out end is difficult to ensure, and the connecting end is easy to incline during use, so that the use reliability of the load terminal is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the load terminal of the high-voltage direct current relay, which has larger maximum torque value born by the connecting end, good universality, capability of enabling the connecting end with various screw thread specifications to meet the torque requirement during use, capability of pressing the lower end of the connecting end into the accommodating hole through the cooperation of the pressing block and the limiting part so as to prevent the connecting end from falling off, capability of being vertically connected to the leading-out end through the screw thread cooperation of the lower screw thread part and the small hole, and good use reliability.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The utility model provides a load terminal of high voltage direct current relay, includes the link and sets up the leading-out end on relay ceramic cover, is equipped with the holding hole on the leading-out end head, the lower extreme of link can insert in the holding hole and with holding hole screw-thread fit connection, the holding hole drill way department of leading-out end is connected with the briquetting through the soldering lug brazing, be equipped with on the link can with briquetting matched with spacing portion, can press the lower extreme of link in the holding downthehole in order to prevent that the link drops through the cooperation of briquetting and spacing portion.
Further, the connecting end sequentially forms an upper threaded part, a limiting part and a lower threaded part from top to bottom, the accommodating hole comprises a large hole and a small hole which are coaxially arranged and are in a shape of large upper part and small lower part, the limiting part and the lower threaded part can be adaptively inserted into the large hole and the small hole of the accommodating hole, and the lower threaded part is connected with the small hole through threaded fit.
Further, the limiting part is in a convex shape.
Further, the spacing portion is annular flange, and annular flange's diameter is greater than the pole diameter of upper thread portion, is clearance fit between annular flange and the week wall of macropore, and the briquetting of fixed connection in holding hole drill way department can press on annular flange in order to press the spacing portion and the lower thread portion of link firmly in the holding hole.
Further, a through hole is formed in the pressing block, and the pressing block can be sleeved on the connecting end through the through hole and can be pressed on the limiting part.
Further, the connecting end is vertically connected to the leading-out end through the threaded fit of the lower threaded portion and the small hole.
Further, the small holes have a depth greater than the large holes.
Further, the shank diameter of the lower threaded portion is equal to or smaller than the shank diameter of the upper threaded portion.
Further, when the leading-out end and the pressing block are welded through the welding lug, part of the welding flux after the welding lug is melted can flow into a gap between the connecting end and the accommodating hole in a threaded fit mode.
Further, the leading-out end is an oxygen-free copper leading-out end, the connecting end is a stainless steel connecting end, the pressing block is a metal pressing block, and the soldering lug is a silver copper soldering lug.
Further, the pressing block is made of copper or alloy copper.
The load terminal of the high-voltage direct-current relay has the following advantages:
1. A pressing block is fixedly connected to the orifice of the containing hole, a limiting part which can be matched with the pressing block is arranged on the connecting end, the lower end of the connecting end can be pressed in the containing hole through the matching of the pressing block and the limiting part, and the connecting end connected to the leading-out end can not fall off when sliding teeth are formed by the threaded matching between the lower threaded part of the connecting end and the small hole of the containing hole.
2. The leading-out end is made of oxygen-free copper, and the connecting end is made of stainless steel, so that the hardness of the connecting end made of stainless steel is not obviously changed when the pressing block and the leading-out end are welded through the soldering lug due to the fact that the expansion coefficients of the oxygen-free copper and the stainless steel are close, and the maximum torque which can be born by the stainless steel is not influenced by soldering.
3. The melted solder can flow into the screw fit clearance between the lower end of the connecting end and the containing hole in a small amount during brazing, so that the lower end of the connecting end is not only in screw fit connection with the containing hole, but also in brazing connection and fixation, the connection stability of the lower end of the connecting end and the containing hole of the leading-out end is greatly improved, and the use reliability is further improved.
4. The connecting end adopts screw thread fit connection through lower screw thread portion and aperture to guarantee the straightness that hangs down of connecting end and leading-out terminal surface, guarantees can not take place the possibility that the connecting end leans out the end relatively when using, has further improved the use reliability.
5. The double connecting structure formed by the brazing connection formed by the threaded fit connection of the lower threaded part and the small hole and the brazing connection formed by the fact that part of the melted welding flux flows into the clearance between the connecting end and the containing hole when the welding lug welds the pressing block and the leading-out end, enables the maximum torque born by the connecting end to be further improved.
6. The upper thread part can be connected with an external copper bar in a matched manner through the nut, part of molten solder flows into a gap between the lower thread part and the small hole in a threaded manner through a gap between the connecting end and the containing hole when the welding lug welds the pressing block and the leading-out end to form braze welding connection, the solder in the gap between the lower thread part and the small hole in the threaded manner not only plays a role in connection, but also plays a role in rotation prevention and fixation, and the phenomenon of 'same tightness and loosening' cannot occur at the connecting end due to the double-thread structure when the copper bar is assembled.
7. The torque of the M5, M8 and M10 screw thread specifications can meet the torque requirement in use, and the method has good universality.
Drawings
Fig. 1 is a schematic view showing the overall structure of a load terminal mounted on a relay according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a load terminal according to an embodiment of the present invention.
Fig. 3 is an enlarged view of a partial structure at a in fig. 2.
Fig. 4 is a schematic structural view of a briquette according to an embodiment of the invention.
Fig. 5 is a schematic diagram showing an exploded structure of the lead-out end, the connection end, the soldering lug and the pressing block according to the embodiment of the present invention.
FIG. 6 is a schematic view of another construction of a compact according to an embodiment of the present invention.
FIG. 7 is a schematic view of yet another construction of a compact according to an embodiment of the present invention.
FIG. 8 is a schematic view of still another construction of a compact according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of a connection terminal according to an embodiment of the present invention.
Fig. 10 is a schematic view of another structure of a connection terminal according to an embodiment of the present invention.
Fig. 11 is a schematic view of still another structure of the connection terminal according to the embodiment of the present invention.
Fig. 12 is an assembly schematic diagram of a load terminal and a copper bar according to an embodiment of the present invention.
Description of the reference numerals:
1. The connecting end, 11, the upper thread part, 12, the limiting part, 13, the lower thread part, 2, the leading-out end, 21, the accommodating hole, 211, the large hole, 212, the small hole, 3, the relay ceramic cover, 4, the soldering lug, 5, the pressing block, 6, the relay, 7, the copper bar, 8 and the nut.
Detailed Description
The invention is further described below with reference to the drawings and examples.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 9, in this embodiment, a load terminal of a high-voltage dc relay includes a connection end 1 and a lead-out end 2 disposed on a relay ceramic cover 3 of a relay 6, a receiving hole 21 is disposed on a head of the lead-out end 2, a lower end of the connection end 1 can be adaptively inserted into the receiving hole 21 and is in threaded fit connection with the receiving hole 21, a pressing block 5 is soldered at an orifice of the receiving hole 21 of the lead-out end 2 through a soldering tab 4, a limit portion 12 capable of being matched with the pressing block 5 is disposed on the connection end 1, and a lower end of the connection end 1 can be pressed in the receiving hole 21 through cooperation of the pressing block 5 and the limit portion 12 so as to prevent the connection end 1 connected to the lead-out end 2 from falling off. In this embodiment, preferably, the lead-out end 2 is an oxygen-free copper lead-out end, the connection end 1 is a stainless steel connection end, and the soldering lug 4 is a silver copper soldering lug, because the expansion coefficients of the oxygen-free copper and the stainless steel are close, when the pressing block 5 and the lead-out end 2 are welded through the soldering lug 4, the hardness of the stainless steel connection end 1 is not obviously changed, the maximum torque which can be born by the stainless steel connection end is not influenced by brazing, and the melted solder can flow into the screw fit gap between the lower end of the connection end 1 and the accommodating hole 21 in a part during brazing, so that the lower end of the connection end 1 and the accommodating hole are not only in screw fit connection, but also have brazing connection and fixing, thereby greatly improving the connection stability of the lower end of the connection end 1 and the accommodating hole 21 of the lead-out end 2, and further improving the use reliability. However, if the torque exceeds the maximum torque that the connection end 1 can bear during use, the thread fit between the lower thread portion 13 and the small hole 212 of the accommodating hole 21 may be caused to slide, so that the connection end 1 connected to the lead-out end 2 may be separated, in this embodiment, a pressing block 5 is fixedly connected to the hole opening of the accommodating hole 21, the limiting part 12 which can be matched with the pressing block 5 is arranged on the connecting end 1, the lower end of the connecting end 1 can be pressed in the accommodating hole 21 through the matching of the pressing block 5 and the limiting part 12, and the connecting end 1 connected to the leading-out end 2 can not fall off when sliding teeth are formed by the threaded matching between the lower threaded part 13 of the connecting end 1 and the small hole 212 of the accommodating hole 21.
Referring to fig. 2, 3, 5 and 9, in this embodiment, preferably, the connection end 1 sequentially forms an upper threaded portion 11, a limiting portion 12 and a lower threaded portion 13 from top to bottom, the accommodating hole 21 includes a large hole 211 and a small hole 212 coaxially arranged, and is in a shape of large top and small bottom, the limiting portion 12 and the lower threaded portion 13 can be adaptively inserted into the large hole 211 and the small hole 212 of the accommodating hole 21, and the lower threaded portion 13 is connected with the small hole 212 through threaded fit. In this embodiment, the small holes 212 are preferably deeper than the large holes 211. The connection terminal 1 is vertically connected to the lead-out terminal 2 by the screw-fit of the lower screw portion 13 and the small hole 212. In this embodiment, the connection end 1 is connected with the small hole 212 by adopting a threaded fit through the lower threaded portion 13, so that the perpendicularity of the end faces of the connection end 1 and the lead-out end 2 can be ensured, the possibility that the connection end 1 inclines relative to the lead-out end 2 can not occur during use, and the use reliability is further improved. The double connection structure formed by the threaded fit connection of the lower threaded portion 13 and the small hole 212, and the brazing connection formed by the fact that part of melted solder flows into the clearance between the connecting end 1 and the accommodating hole 21 through the clearance between the lower threaded portion 13 and the small hole 212 when the pressing block 5 and the leading-out end 2 are welded through the soldering lug 4, enables the maximum torque bearable by the connecting end 1 to be further improved. The upper thread part can be matched and connected with an external copper bar 7 through the nut 8, part of molten solder flows into a gap between the lower thread part 13 and the small hole 212 in a threaded fit manner through a gap between the connecting end 1 and the containing hole 21 when the welding lug 4 welds the pressing block 5 and the leading-out end 2 to form braze welding connection, the solder in the gap between the lower thread part 13 and the small hole 212 in the threaded fit manner not only plays a role in connection, but also plays a role in anti-rotation fixing, and the phenomenon of 'same tightening and loosening' of the connecting end can not occur due to a double-thread structure when the copper bar is assembled, namely the nut 8 can be screwed and unscrewed on the upper thread part 11, and the lower thread part 13 of the connecting end 1 is always fixedly connected in the containing hole 21 of the leading-out end 2.
Referring to fig. 2 and 3, in the present embodiment, the limiting portion 12 is in a protruding shape. Preferably, the limiting part 12 is an annular flange, the diameter of the annular flange is larger than the rod diameter of the upper threaded part 11, the annular flange is in clearance fit with the peripheral wall of the large hole 211, and the pressing block 5 fixedly connected to the hole opening of the accommodating hole 21 can press on the annular flange to firmly press the limiting part 12 and the lower threaded part 13 of the connecting end 1 in the accommodating hole 21.
Referring to fig. 5, in this embodiment, the pressing block 5 is preferably circular, a through hole is provided on the pressing block 5, preferably, a through hole is provided at the center of the pressing block 5, and the pressing block 5 can be sleeved on the connection end 1 through the through hole and can be pressed on the limiting portion 12. However, it should be understood by those skilled in the art that the shape of the pressing block 5 may be other shapes, and as shown in fig. 6 to 8, the pressing block 5 may be triangular, square or hexagonal, so long as a through hole is formed in the pressing block 5 to enable the pressing block 5 to be sleeved on the connection end 1 and to be pressed on the limiting portion 12. In this embodiment, preferably, the through hole on the pressing block 5 may be a straight hole or a threaded hole, and an end polish rod portion is disposed between the upper threaded portion 11 and the limiting portion 12 of the connection end 1, and the pressing block 5 is in clearance fit with the polish rod portion, so that when the pressing block 5 is sleeved on the connection end 1, the bottom of the pressing block 5 can be pressed on the limiting portion 12 of the connection end 1.
Referring to fig. 9 to 11, in the present embodiment, the diameter of the lower threaded portion 13 may be larger than, equal to or smaller than the diameter of the upper threaded portion 11, but in consideration of the problem that the wall thickness of the head portion of the terminal 2 becomes thin due to the accommodating hole formed in the head portion of the terminal 2, the conductive cross-sectional area becomes small, resulting in serious heat generation, in the present embodiment, the diameter of the lower threaded portion 13 is preferably equal to or smaller than the diameter of the upper threaded portion 11.
Referring to fig. 3, in this embodiment, the pressing block 5 is a metal pressing block, and in consideration of performances such as conductivity and brazing, preferably, the pressing block 5 is a copper or alloy copper pressing block, and the pressing block 5 is fixedly connected to the hole opening of the accommodating hole 21 of the lead-out end 2 through brazing of the soldering lug 4. Copper or alloy copper is welded with oxygen-free copper, expansion coefficients of similar materials are closer, and welding is more firm. In addition, it should be understood by those skilled in the art that when the press block is brazed and fixedly connected to the lead-out terminal 2, the brazing surface can be enlarged by the flow of the solder so that the matched parts of the press block 5 and the limiting part 12 are welded together, thereby further improving the stability of the connecting terminal 1.
In this embodiment, the lead-out end 2 is an oxygen-free copper lead-out end, the connection end 1 is a stainless steel connection end, the soldering lug 4 is a silver copper soldering lug, and the hardness of the stainless steel connection end 1 is not obviously changed when the pressing block 5 and the lead-out end 2 are welded through the soldering lug 4 due to the fact that the expansion coefficients of the oxygen-free copper and the stainless steel are close, so that the maximum torque which can be born by the stainless steel connection end 1 is not influenced by soldering. The melted solder can flow into the screw thread fit clearance between the lower end of the connecting end 1 and the containing hole 21 in the brazing process, so that the lower end of the connecting end 1 is not only in screw thread fit connection with the containing hole, but also in brazing connection and fixation, the connection stability of the lower end of the connecting end 1 and the containing hole 21 of the leading-out end 2 is greatly improved, and the use reliability is further improved. The connecting end 1 is connected with the small hole 212 through the lower threaded part 13 in a threaded fit manner, so that the perpendicularity of the end faces of the connecting end 1 and the leading-out end 2 can be guaranteed, the possibility that the connecting end 1 inclines relative to the leading-out end 2 can not happen during use, and the use reliability is further improved. The double connection structure formed by the threaded fit connection of the lower threaded portion 13 and the small hole 212, and the brazing connection formed by the fact that part of melted solder flows into the clearance between the connecting end 1 and the accommodating hole 21 through the clearance between the lower threaded portion 13 and the small hole 212 when the pressing block 5 and the leading-out end 2 are welded through the soldering lug 4, enables the maximum torque bearable by the connecting end 1 to be further improved. And the upper thread part can be connected with the copper bar 7 outside through the nut 8 in a matched manner, partial melted solder flows into the gap between the lower thread part 13 and the small hole 212 in a threaded manner through the gap between the connecting end 1 and the containing hole 21 when the welding lug 4 welds the pressing block 5 and the leading-out end 2 to form braze welding connection, the solder in the gap between the lower thread part 13 and the small hole 212 in the threaded manner not only plays a role in connection, but also plays a role in anti-rotation fixing, and the phenomenon of 'same tightening and loosening' can not occur at the connecting end because of the double-thread structure when the copper bar is assembled. A pressing block 5 is fixedly connected to the orifice of the accommodating hole 21, a limiting part 12 which can be matched with the pressing block 5 is arranged on the connecting end 1, the lower end of the connecting end 1 can be pressed in the accommodating hole 21 through the matching of the pressing block 5 and the limiting part 12, and the connecting end 1 connected to the leading-out end 2 is prevented from falling off when sliding teeth are formed in the threaded matching between the lower threaded part 13 of the connecting end 1 and the small hole 212 of the accommodating hole 21. The embodiment can ensure that the torque of the M5, M8 and M10 screw thread specifications can meet the torque requirement during use, and has good universality. As shown in fig. 12, the upper screw thread part 11 is connected with a nut 8, the copper bar 7 is clamped and connected between the pressing block 5 and the nut 8 through the nut 8, preferably, in order to better clamp the copper bar 7, a flat pad and a spring pad are arranged between the copper bar 7 and the nut 8, so that when the nut 8 is locked, the copper bar 7 can be pressed on the pressing block 5 and connected with the connecting end 1, when in use, under the action of external force, even if the lower screw thread part 13 is matched with the screw thread of the small hole 212 to generate sliding teeth, the pressing block 5 is matched with the limiting part 12 to press the limiting part 12 into the accommodating hole 21 so that the connecting end 1 is still connected on the leading-out end without falling, The use reliability is ensured. Furthermore, it will be understood by those skilled in the art that if the pressing block 5 is not provided, the copper bar 7 is clamped between the connection lead-out terminal 2 and the nut 8 by the nut 8, and when the nut 8 is locked, the copper bar 7 is pressed on the lead-out terminal 2, and when the external force is too large, sliding teeth may occur in the threaded connection between the lower threaded portion 13 and the small hole 212, the connection terminal 1 will be entirely separated from the lead-out terminal 2, and the copper bar 7 will also lose connection with the upper threaded portion 11 of the connection terminal, so that the reliability in use cannot be ensured.
The embodiments are merely illustrative of the technical solution of the present invention, and not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and therefore all other embodiments obtained by those skilled in the art without making creative efforts are intended to fall within the protection scope of the present invention.
Claims (10)
1. A load terminal of a high voltage dc relay, characterized by: the relay ceramic cover comprises a connecting end (1) and a leading-out end (2) arranged on the relay ceramic cover (3), wherein a containing hole (21) is formed in the head of the leading-out end (2), the lower end of the connecting end (1) can be adaptively inserted into the containing hole (21) and is in threaded fit connection with the containing hole (21), a pressing block (5) is connected at the orifice of the containing hole (21) of the leading-out end (2) through soldering lugs (4) in a brazing manner, a limiting part (12) which can be matched with the pressing block (5) is arranged on the connecting end (1), and the lower end of the connecting end (1) can be pressed in the containing hole (21) through the matching of the pressing block (5) and the limiting part (12) so as to prevent the connecting end (1) from falling off;
an upper screw part (11) is formed at the upper part of the connecting end (1).
2. The load terminal of the high voltage direct current relay according to claim 1, wherein: the connecting end (1) sequentially forms an upper threaded part (11), a limiting part (12) and a lower threaded part (13) from top to bottom, the accommodating hole (21) comprises a large hole (211) and a small hole (212) which are coaxially arranged, the upper part is large and the lower part is small, the limiting part (12) and the lower threaded part (13) can be adaptively inserted into the large hole (211) and the small hole (212) of the accommodating hole (21), and the lower threaded part (13) is connected with the small hole (212) through threaded fit.
3. The load terminal of the high voltage direct current relay according to claim 2, wherein: the limiting part (12) is in a convex shape.
4. A load terminal of a high voltage dc relay according to claim 3, characterized in that: the limiting part (12) is an annular flange, the diameter of the annular flange is larger than the rod diameter of the upper threaded part (11), clearance fit is formed between the annular flange and the peripheral wall of the large hole (211), and the pressing block (5) fixedly connected to the orifice of the accommodating hole (21) can be pressed on the annular flange so as to firmly press the limiting part (12) and the lower threaded part (13) of the connecting end (1) in the accommodating hole (21).
5. The load terminal of the high voltage direct current relay according to claim 4, wherein: the pressing block (5) is provided with a through hole, and the pressing block (5) can be sleeved on the connecting end (1) through the through hole and can be pressed on the limiting part (12).
6. The load terminal of the high voltage direct current relay according to claim 2, wherein: the connecting end (1) is vertically connected to the leading-out end (2) through the threaded fit of the lower threaded part (13) and the small hole (212).
7. The load terminal of the high voltage direct current relay according to claim 2, wherein: the shank diameter of the lower thread part (13) is equal to or smaller than the shank diameter of the upper thread part (11).
8. The load terminal of the high voltage direct current relay according to claim 1, wherein: when the leading-out end (2) and the pressing block (5) are welded through the welding lug (4), part of the melted welding flux of the welding lug (4) can flow into a gap between the connecting end (1) and the accommodating hole (21) in threaded fit.
9. Load terminal of a high voltage direct current relay according to any of the claims 1 to 8, characterized in that: the lead-out end (2) is an oxygen-free copper lead-out end, the connecting end (1) is a stainless steel connecting end, the pressing block (5) is a metal pressing block, and the soldering lug (4) is a silver copper soldering lug.
10. The load terminal of the high voltage direct current relay according to claim 9, wherein: the pressing block (5) is made of copper or alloy copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129716.4A CN109859990B (en) | 2019-02-21 | 2019-02-21 | Load terminal of high-voltage direct-current relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129716.4A CN109859990B (en) | 2019-02-21 | 2019-02-21 | Load terminal of high-voltage direct-current relay |
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| Publication Number | Publication Date |
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| CN109859990A CN109859990A (en) | 2019-06-07 |
| CN109859990B true CN109859990B (en) | 2024-10-18 |
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| CN201910129716.4A Active CN109859990B (en) | 2019-02-21 | 2019-02-21 | Load terminal of high-voltage direct-current relay |
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| CN110911232A (en) * | 2019-11-07 | 2020-03-24 | 贵州天义电器有限责任公司 | Binding post assembly and brazing method and brazing tool thereof |
| CN114083240B (en) * | 2021-11-29 | 2024-03-01 | 贵州天义电器有限责任公司 | Welding method for two-body conductive block |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005038705A (en) * | 2003-07-15 | 2005-02-10 | Matsushita Electric Works Ltd | Sealed contact device |
| CN206682112U (en) * | 2017-03-30 | 2017-11-28 | 上海华鞍汽车配件有限公司 | A kind of auto use chair band pad localization pin |
| CN207377948U (en) * | 2017-10-17 | 2018-05-18 | 中国长江动力集团有限公司 | A kind of connection pore structure and cast member |
| CN209434110U (en) * | 2019-02-21 | 2019-09-24 | 厦门宏发电力电器有限公司 | A kind of face terminals of high voltage direct current relay |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM512880U (en) * | 2015-07-03 | 2015-11-21 | Fivetech Technology Inc | Located device |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005038705A (en) * | 2003-07-15 | 2005-02-10 | Matsushita Electric Works Ltd | Sealed contact device |
| CN206682112U (en) * | 2017-03-30 | 2017-11-28 | 上海华鞍汽车配件有限公司 | A kind of auto use chair band pad localization pin |
| CN207377948U (en) * | 2017-10-17 | 2018-05-18 | 中国长江动力集团有限公司 | A kind of connection pore structure and cast member |
| CN209434110U (en) * | 2019-02-21 | 2019-09-24 | 厦门宏发电力电器有限公司 | A kind of face terminals of high voltage direct current relay |
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