CN102082048A - Miniature circuit breaker with high breaking capacity - Google Patents
Miniature circuit breaker with high breaking capacity Download PDFInfo
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- CN102082048A CN102082048A CN2009102526025A CN200910252602A CN102082048A CN 102082048 A CN102082048 A CN 102082048A CN 2009102526025 A CN2009102526025 A CN 2009102526025A CN 200910252602 A CN200910252602 A CN 200910252602A CN 102082048 A CN102082048 A CN 102082048A
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Abstract
The invention discloses a miniature circuit breaker with a high breaking capacity, which comprises a shell, wherein the shell is internally provided with a magnet yoke assembly, a moving contact assembly, an arc extinction system and an actuating mechanism. A magnet yoke, a wiring board and a connecting sheet in the magnet yoke assembly are designed into a whole to ensure that the structure of the magnet yoke assembly is simplified, the quantity of soldered dots of the magnet yoke assembly is reduced and the internal resistance of a circuit breaker is lowered; a moving contact in the moving contact assembly comprises a contact support and a contact which are connected, the specific gravity of the contact support is smaller than that of the moving contact, and a magnet conductive plate is additionally arranged on the back of the moving contact and used for accelerating the transfer of an electric arc, therefore, the breaking capacity of the circuit breaker is improved; and a plurality of linkage lug bosses used for multipolar linkage are arranged on a contact support body, thus the linkage performance of the multipole circuit breaker is effectively ensured. A coil is connected with the moving contact through an annealed copper wire in a spot welding manner, and the soldered spots are moved from the linkage lug bosses to the moving contact without influencing the linkage property of the multipole circuit breaker. The invention has the advantages of high breaking capacity, high consistency of the interelectrode linkage and good reliability performance.
Description
Technical field
The present invention relates to the low-voltage electrical apparatus field, be specifically related to a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker has short circuit current defencive function and overload current defencive function usually; wherein overload protection function is by thrermostatic bimetal-plate induction and produce the crooked breaker mechanism turn-off current loop that promotes and realize, thereby short-circuit protection function makes armature motion and promotes the realization of breaker mechanism turn-off current loop by comprising the magnetictrip induction that coil, armature, magnet yoke element etc. form and setting up magnetic field.Existing miniature circuit breaker has following shortcoming:
(1) magnet yoke element of existing miniature circuit breaker, mainly comprise yoke, brace, terminal block, yoke is provided with the bearing end of thrermostatic bimetal-plate, brace is between yoke and terminal block, and an end of brace is electrically connected the bearing end of thrermostatic bimetal-plate on terminal block, the other end electrical connection yoke.Terminal block is the link of miniature circuit breaker and external power source, and yoke has at the magnetictrip induced current sets up the function that makes its magnetic circuit realization at utmost closed in the magnetic field process.Existing magnet yoke element is by forming than multiple component, and structure is complicated, raw material production cost and warehousing management cost height.In addition, between terminal block and the brace and between brace and the yoke two solder joints are being arranged, the existence of solder joint has not only increased the production cycle and has produced man-hour, more increased the loop resistance of circuit breaker, influence performances such as product temperature rise, and inconsistent because of the inconsistent easy formation loop resistance of Joint Strength, thereby influence the consistency of end properties.
(2) miniature circuit breaker should have good connection and breaking capacity, in order to guarantee the good making capacity of miniature circuit breaker, at first will keep enough contact pressures between dynamic/static contact, and moving contact will have enough excess of stroke; Secondly, in dynamic/static contact disconnection process, require moving contact that enough opening speeds will be arranged, the material of making moving contact will have favorable mechanical performance and excellent conducting performance, also less quality will be arranged simultaneously.
The manufactured materials of the moving contact component of existing miniature circuit breaker also has higher proportion when having satisfactory electrical conductivity, cause the weight of moving contact bigger, in the moving contact motion process, has bigger inertia, speed promotes slower, make the opening speed of moving contact be difficult to improve, be unfavorable for breaking arc, and then influenced the breaking capacity of circuit breaker.Existing moving contact comprises that contact contact portion, current-carrying part, coupling part, linkage part grade, wherein have only contact contact portion, current-carrying part requirement that good electrical conductivity and favorable mechanical performance are arranged, coupling part, double-action part have then been only required the favorable mechanical performance.But present whole moving contact is to be made by the good material of the higher conduction of price, does like this and has both improved cost, can not guarantee the favorable mechanical performance again.
(3) in dynamic/static contact disconnection process, make electric arc enter arc control device fast and extinguish, near the conductor structure the moving contact will have good arc blow-out ability.
The arc quenching system of existing miniature circuit breaker, when the disjunction short circuit current, electric arc will just can enter arc control device through the cavity of certain distance, and the electric current that flows through near the conductor structure in this process the electric arc produces magnetic field, and electric arc is subjected to the effect of power and moves into arc control device in this magnetic field.Because do not have the parts of special generation magnetic blow-out, the arc blow-out ability is not enough, it is very slow to make electric arc enter the speed that arc control device extinguish.
(4) a plurality of one pole miniature circuit breakers generally connect as one operating grip, free tripping mechanism etc., constitute the multipole small-size circuit breaker, realize multipole simultaneous operation by the operating grip that connects as one, when disconnecting, realize that by the free tripping mechanism of reciprocal interlocking the multipole small-size circuit breaker disconnects synchronously when producing fault at least one minimal type circuit breaker.
Above-mentioned multipole linkage function is to promote locking part by moving contact component, locking part spurs that the snap close piece of other utmost point realizes, moving contact component mainly comprises moving contact and support, a side is provided with a boss with other utmost point interlock on the moving contact, opposite side also is provided with a boss with other utmost point interlock on the support, moving contact is in the same place by the axle string with support, because the foozle and the rigging error of part, the interlock boss on the moving contact and the position consistency of the interlock boss on the support are bad, can influence the consistency of multipole circuit breaker molar behavior.
(5) moving contact component of existing miniature circuit breaker linked together with being connected by the line spot welding that is flexible coupling of coil, the be flexible coupling interlock boss next door on moving contact component, the position of pad of line and moving contact component is if weld the bad interlock performance that is easy to influence multipole circuit breaker.
The content of invention
At the above-mentioned weak point of existing miniature circuit breaker, the applicant improves through research, and the consistency height of a kind of breaking capacity height, interpolar interlock, the miniature circuit breaker with high breaking capacity of dependable performance are provided.
Technical scheme of the present invention is as follows:
A kind of miniature circuit breaker with high breaking capacity comprises the shell of being made up of upper and lower covers, is equipped with in the described shell:
Yoke assembly: comprise yoke, be installed in magnetic core on the yoke and top coil thereof, connect thrermostatic bimetal-plate on the bearing end of yoke, thrermostatic bimetal-plate is connected with the coil conduction, and yoke is connected with an end of terminal block, and the other end of terminal block is connected with connector lug;
Operating mechanism: the U-shaped connecting rod that comprises handle and be connected with handle, the other end of U-shaped connecting rod is connected with lever, lever is connected with support, the one end overlap joint of support and tripping part can cooperate interlock, the other end of tripping part and snap close piece overlap joint, can cooperate interlock, the lower end of snap close piece and magnetic core overlap joint have the space between the upper end of snap close piece and the thrermostatic bimetal-plate, and tripping part, snap close piece all flexibly connect by bearing pin with shell;
Arc quenching system: comprise arc control device, the arc control device below is placed with the arc angle that is connected with fixed contact, and arc control device one side has arc separating wall, and arc separating wall surrounds a cavity with moving contact, fixed contact, and fixed contact is connected with connector lug;
Moving contact component: comprise moving contact, moving contact is connected with the coil conduction, and moving contact is connected with the contact supporter, and the contact supporter is connected by bearing pin with support, the fixedly connected magnetic conduction sheet in the back side of moving contact; When off-state, moving contact and arc control device are connected; When on-state, moving contact and fixed contact are connected.
Its further technical scheme is: described yoke, bearing end and terminal block are one.
Its further technical scheme is: moving contact is made by the good material of conduction, and the contact supporter is made by the material of satisfactory mechanical property.
Its further technical scheme is: the proportion of described contact supporter material is littler than the proportion of moving contact material.
Its further technical scheme is: described magnetic conduction sheet and contact supporter are one.
Its further technical scheme is: described contact supporter bilateral symmetry is provided with the interlock boss of one.
Its further technical scheme is: also be provided with locking part on the inwall of described shell, locking part contacts with interlock boss and snap close piece respectively by the bearing pin at two ends, and can cooperate interlock, the other end of described bearing pin is connected by the locking part of the hole on the shell with the miniature circuit breaker of an adjacent utmost point.
Useful technique effect of the present invention is:
(1) the present invention is designed to yoke, terminal block and bearing end the integrated element that formed by the conductive metallic material punching out, make the designs simplification of magnet yoke element, the part kind reduces, reduced the use of the higher electric conducting material of price, not only saved the processing cost of raw material, also brought convenience for warehousing management, reduced the magnet yoke element number of welds simultaneously, production cycle and the internal resistance that has reduced circuit breaker have been shortened, and the consistency of its internal resistance is improved, thereby make the circuit breaker machine performance more reliable and more stable.
(2) the present invention has reduced the volume of the moving contact made by the higher electric conducting material of price, and moving contact includes only contact contact portion and current-carrying part, and it is made by conduction good metal material; Coupling part and double-action part are set on the contact supporter, and its metal material by satisfactory mechanical property is made.This structure has not only improved properties of product but also reduced material cost.
(3) the present invention is because the proportion of contact supporter is littler than the proportion of moving contact, thereby makes the weight of whole moving contact component lighter, accelerated the movement velocity of moving contact component when contact disconnects, and helps improving the breaking capacity of circuit breaker.
(4) the present invention has set up magnetic conduction sheet at the back side of moving contact, magnetic conduction sheet and contact supporter be one or separate, when the contact disjunction and when producing electric arc, the magnetic conduction sheet of being made by ferromagnetic substance can strengthen the magnetic field at electric arc place greatly, accelerate the transfer of electric arc, the breaking capacity of circuit breaker is improved.
(5) the present invention is because the moving contact component quality that moving contact and contact supporter are formed is less, when having fault current that the institution freedom of miniature circuit breaker is threaded off in the circuit, the moving contact fixed contact that will speed away, arc time shortens, electric arc in time moves to the arc control device direction under electromagnetic field effect, and the existence of magnetic conduction sheet strengthens electromagnetic field, and the magnetic blow-out effect strengthens, make electric arc enter arc control device smoothly fast, the traveling time that electric arc enters before the arc control device shortens; After electric arc enters arc control device, be separated into many sections by the metal gate sheet in the arc control device, every section electric arc all produces a proximal pole voltage near the metal gate sheet, the pressure drop of whole electric arc is improved rapidly, and electric arc is extinguished rapidly.
(6) the present invention's boss that will be used for multipole interlock is set to the contact supporter, and the mechanical performance of moving contact component and the consistency of multipole product interpolar interlock are fully improved.
(7) link together by annealed copper wire spot welding between coil of the present invention and the moving contact, solder joint moves on the moving contact from the interlock boss, can the interlock performance of multipole circuit breaker not exerted an influence the reliability height.
Description of drawings
Fig. 1 is one of structure chart of the present invention, and dynamic and static contact is in off-state.
Fig. 2 is two of a structure chart of the present invention, and dynamic and static contact is in on-state.
Fig. 3 is the structural representation of multipole interlocking device of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 1, Fig. 2 show the structure after the present invention removes loam cake, have only kept the lower cover of shell 1 among the figure.Described upper and lower covers has constituted insulation crust 1 of the present invention together, molded insulation crust is except the basic insulation that miniature circuit breaker is provided, the support of inner various parts still is installed, is had enough electrical strengths and mechanical strength, satisfy the performance requirement of miniature circuit breaker.
Shell 1 in the present embodiment is made of plastics, and is support with shell 1, and parts such as yoke assembly, operating mechanism, arc quenching system, moving contact component are installed by portion within it.
Yoke assembly comprises yoke 2 and is installed in magnetic core 17 on the yoke 2, coil 16 is on magnetic core 17, the bearing end 2b of yoke 2 goes up spot welding and is connected with thrermostatic bimetal-plate 18, thrermostatic bimetal-plate 18 is connected by annealed copper wire spot welding with coil 16, yoke 2 is connected with the end of terminal block 2a, and the other end of terminal block 2a is connected with connector lug 19.The integrated structure of terminal block 2a, bearing end 2b and yoke 2 no longer needs welding in the present embodiment, is formed by conductive metallic material (clad steel plate) punching out.
Operating mechanism comprises handle 14 and is arranged on U-shaped connecting rod 13 on the handle 14, U-shaped connecting rod 13 is connected with lever 11, lever 11 is connected with support 10, the one end overlap joint of support 10 and tripping part 12, can cooperate interlock, the other end of tripping part 12 and snap close piece 15 overlap joints, can cooperate interlock, the lower end of snap close piece 15 and magnetic core 17 overlap joints, between the upper end of snap close piece 15 and the thrermostatic bimetal-plate 18 space is arranged, can contact with snap close piece 15 after thrermostatic bimetal-plate 18 produces enough big distortion, and promote snap close piece 15 rotations.Tripping part 12, snap close piece 15 all flexibly connect by bearing pin with shell 1.
Arc quenching system comprises arc control device 3, and arc control device are placed with the arc angle 4 that is connected with fixed contact 7 spot welding for 3 times, and there is arc separating wall 5 arc control device 3 sides, and arc separating wall 5 is each a slice up and down, surrounds a cavity with moving contact 8, fixed contact 7, and fixed contact 7 is connected with connector lug 20.
Moving contact component comprises moving contact 8, and moving contact 8 is connected by annealed copper wire spot welding with coil 16.Moving contact 8 is connected with 9 spot welding of contact supporter, wherein moving contact 8 is to be made by conduction good metal material, contact supporter 9 is to be made by the material metal of satisfactory mechanical property, the proportion of contact supporter 9 materials is littler than the proportion of moving contact 8 materials, thereby make the weight of whole moving contact component lighter, mechanical performance is better, has been satisfied moving contact component the lighter again requirement of weight simultaneously of favorable mechanical performance and excellent conducting performance should be arranged by the link together moving contact component formed of two kinds of material stiffness.Both sides on contact supporter 9 bodies are provided with the interlock boss 9a and the interlock boss 9b (see figure 3) of symmetry, and two interlock boss are arranged on the same part, and the consistency of position is easier to control, can guarantee the interlock performance of multipole circuit breaker; Moving contact 8 is rigidly attached on the contact supporter 9 away from an end of interlock boss, does not influence multipole interlock.Contact supporter 9 and support 10 link together by bearing pin, and are tightened together by prior art by torsionspring, make between contact supporter 9 and the support 10 and can not relatively move.The fixedly connected magnetic conduction sheet 6 in the back side of moving contact 8, magnetic conduction sheet 6 can be an one with contact supporter 9, both also can be parts independently.When the circuit breaker off-state, moving contact 8 and arc control device 3 are connected; During the closing of power circuit breaker state, moving contact 8 and fixed contact 7 are connected again.
Course of action of the present invention is as follows:
When in circuit, having fault current that the institution freedom of miniature circuit breaker is threaded off, because moving contact 8 is less with the moving contact component quality that contact supporter 9 is formed, make moving contact 8 fixed contact 7 that speeds away, arc time shortens, electric arc in time moves to arc control device 3 directions under electromagnetic field effect, and the existence of magnetic conduction sheet 6 strengthens electromagnetic field, and the magnetic blow-out effect strengthens, make electric arc enter arc control device 3 smoothly fast, the traveling time that electric arc enters before the arc control device 3 shortens; After electric arc enters arc control device 3, be separated into many sections by the metal gate sheet in the arc control device 3, every section electric arc all produces a proximal pole voltage near the metal gate sheet, the pressure drop of whole electric arc is improved rapidly, and electric arc is extinguished rapidly; The quick transfer of electric arc and extinguish and guaranteed that the actual short electric current is far smaller than prospective short circuit current can well realize metering function.
When in circuit, producing overcurrent; after overcurrent continues the time of a fixed length; thrermostatic bimetal-plate 18 produces the bent distortion of enough changes; and promotion snap close piece 15 clockwise rotates; after turning an angle, snap close piece 15 discharges tripping part 12; tripping part 12 discharges support 10 after rotating counterclockwise certain angle; support 10, contact supporter 9, moving contact 8 clockwise rotate; under the not moving situation of handle; moving contact just can disconnect; miniature circuit breaker is realized trip free, thereby realizes excess current protective function.
When in circuit, being short-circuited; electric current increases rapidly; in coil 15, produce powerful electromagnetic field; produce suction between iron core; moving iron core in the magnetic core 17 is to left movement; promoting snap close piece 15 clockwise rotates; after turning an angle, snap close piece 15 discharges tripping part 12; tripping part 12 discharges support 10 after rotating counterclockwise certain angle; moving contact 8, contact supporter 9 and support 10 clockwise rotate together; moving contact just can disconnect, the miniature circuit breaker trip free, thus realize short-circuit protection function.
Fig. 3 shows multipole interlocking device of the present invention.Locking part 21 is arranged in the groove on shell 1 inwall, a locking part 21 is respectively arranged in the upper and lower covers of shell 1, locking part 21 bearing pin by two ends respectively with interlock boss 9a or interlock boss 9b, and snap close piece 15 contacts, and can cooperate interlock, the other end of bearing pin is connected with the locking part 21 of consecutive roots miniature circuit breaker by the hole on the shell 1, constitutes the multipole small-size circuit breaker.Realize multipole simultaneous operation by locking part 21, particularly the mechanical interlocking during fault actions.
As shown in Figure 3, when disconnecting when at least one minimal type circuit breaker generation fault, the contact supporter 9 of this fault utmost point clockwise rotates, the interlock boss 9a of contact supporter 9 upper ends and interlock boss 9b promote locking part 21 and move right, the snap close piece 15 that the other end of locking part 21 just spurs each utmost point clockwise rotates, realize the trip free of each utmost point of miniature circuit breaker, the multipole small-size circuit breaker is disconnected synchronously.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that those skilled in the art under the prerequisite that does not break away from spirit of the present invention and design, can make other improvement and variation.
Claims (7)
1. the miniature circuit breaker with high breaking capacity comprises the shell of being made up of upper and lower covers (1), it is characterized in that being equipped with in the described shell (1):
Yoke assembly: comprise yoke (2), be installed in magnetic core (17) on the yoke (2) and top coil (16) thereof, the bearing end (2b) of yoke (2) is gone up and is connected thrermostatic bimetal-plate (18), thrermostatic bimetal-plate (18) is connected with coil (16) conduction, yoke (2) is connected with an end of terminal block (2a), and the other end of terminal block (2a) is connected with connector lug (19);
Operating mechanism: comprise handle (14) and the U-shaped connecting rod (13) that is connected with handle (14), the other end of U-shaped connecting rod (13) is connected with lever (11), lever (11) is connected with support (10), the one end overlap joint of support (10) and tripping part (12), can cooperate interlock, the other end of tripping part (12) and snap close piece (15) overlap joint, can cooperate interlock, the lower end of snap close piece (15) and magnetic core (17) overlap joint, between the upper end of snap close piece (15) and the thrermostatic bimetal-plate (18) space is arranged, tripping part (12), snap close piece (15) all flexibly connects by bearing pin with shell (1);
Arc quenching system: comprise arc control device (3), arc control device (3) below is placed with the arc angle (4) that is connected with fixed contact (7), arc control device (3) one sides have arc separating wall (5), and arc separating wall (5) surrounds a cavity with moving contact (8), fixed contact (7), and fixed contact (7) is connected with connector lug (20);
Moving contact component: comprise moving contact (8), moving contact (8) is connected with coil (16) conduction, moving contact (8) is connected with contact supporter (9), and contact supporter (9) is connected by bearing pin with support (10), the fixedly connected magnetic conduction sheet in the back side (6) of moving contact (8); When off-state, moving contact (8) and arc control device (3) are connected; When on-state, moving contact (8) and fixed contact (7) are connected.
2. according to the described miniature circuit breaker with high breaking capacity of claim 1, it is characterized in that: described yoke (2), bearing end (2b) and terminal block (2a) are one.
3. according to the described miniature circuit breaker with high breaking capacity of claim 1, it is characterized in that: moving contact (8) is made by the good material of conduction, and contact supporter (9) is made by the material of satisfactory mechanical property.
4. according to claim 1 or 3 described miniature circuit breakers with high breaking capacity, it is characterized in that: the proportion of described contact supporter (9) material is littler than the proportion of moving contact (8) material.
5. according to the described miniature circuit breaker with high breaking capacity of claim 1, it is characterized in that: described magnetic conduction sheet (6) is an one with contact supporter (9).
6. according to the described miniature circuit breaker with high breaking capacity of claim 1, it is characterized in that: described contact supporter (9) bilateral symmetry is provided with the interlock boss (9a) and the interlock boss (9b) of one.
7. according to the described miniature circuit breaker of claim 1 with high breaking capacity, it is characterized in that: also be provided with locking part (21) on the inwall of described shell (1), the bearing pin of locking part (21) by two ends respectively with interlock boss (9a) or interlock boss (9b), and snap close piece (15) contact, and can cooperate interlock, the other end of described bearing pin is connected with the locking part (21) of the miniature circuit breaker of an adjacent utmost point by the hole on the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102526025A CN102082048A (en) | 2009-11-26 | 2009-11-26 | Miniature circuit breaker with high breaking capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102526025A CN102082048A (en) | 2009-11-26 | 2009-11-26 | Miniature circuit breaker with high breaking capacity |
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| CN102082048A true CN102082048A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102526025A Pending CN102082048A (en) | 2009-11-26 | 2009-11-26 | Miniature circuit breaker with high breaking capacity |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610455A (en) * | 2012-04-01 | 2012-07-25 | 天津市鸿远电气设备有限公司 | Arc extinguishing mechanism of low-voltage circuit breaker |
| CN102610456A (en) * | 2012-03-13 | 2012-07-25 | 华为技术有限公司 | Thermomagnetic circuit breaker and power distribution equipment |
| CN102610453A (en) * | 2012-03-16 | 2012-07-25 | 任登华 | Series cut-out switches |
| CN107275161A (en) * | 2017-06-27 | 2017-10-20 | 浙江美格尔电气科技有限公司 | A kind of miniature circuit breaker |
| CN107958828A (en) * | 2016-10-17 | 2018-04-24 | 浙江正泰电器股份有限公司 | Breaker |
| CN108461331A (en) * | 2017-02-17 | 2018-08-28 | 浙江正泰电器股份有限公司 | The dual power supply control structure of multipole circuit breaker |
| CN114743839A (en) * | 2020-12-23 | 2022-07-12 | 上海华宿电气股份有限公司 | Multi-pole lead connecting structure |
-
2009
- 2009-11-26 CN CN2009102526025A patent/CN102082048A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610456A (en) * | 2012-03-13 | 2012-07-25 | 华为技术有限公司 | Thermomagnetic circuit breaker and power distribution equipment |
| CN102610456B (en) * | 2012-03-13 | 2015-11-25 | 华为技术有限公司 | Thermomagnetic circuit breaker and controller switching equipment |
| CN102610453A (en) * | 2012-03-16 | 2012-07-25 | 任登华 | Series cut-out switches |
| CN102610455A (en) * | 2012-04-01 | 2012-07-25 | 天津市鸿远电气设备有限公司 | Arc extinguishing mechanism of low-voltage circuit breaker |
| CN107958828A (en) * | 2016-10-17 | 2018-04-24 | 浙江正泰电器股份有限公司 | Breaker |
| CN108461331A (en) * | 2017-02-17 | 2018-08-28 | 浙江正泰电器股份有限公司 | The dual power supply control structure of multipole circuit breaker |
| CN108461331B (en) * | 2017-02-17 | 2020-06-26 | 浙江正泰电器股份有限公司 | Double-power-supply control structure of multi-pole circuit breaker |
| CN107275161A (en) * | 2017-06-27 | 2017-10-20 | 浙江美格尔电气科技有限公司 | A kind of miniature circuit breaker |
| CN114743839A (en) * | 2020-12-23 | 2022-07-12 | 上海华宿电气股份有限公司 | Multi-pole lead connecting structure |
| CN114743839B (en) * | 2020-12-23 | 2023-10-24 | 上海华宿电气股份有限公司 | Multipolar wire connection structure |
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Addressee: Wuxi Weite Electrical Technology Co., Ltd. Peng Qijun Document name: Notification of Publication of the Application for Invention |
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Addressee: Wuxi unique Electric Technology Co., Ltd. Peng Qijun Document name: Notification of before Expiration of Request of Examination as to Substance |
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Application publication date: 20110601 |