CN112582237A - Residual current circuit breaker - Google Patents
Residual current circuit breaker Download PDFInfo
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- CN112582237A CN112582237A CN201910935100.6A CN201910935100A CN112582237A CN 112582237 A CN112582237 A CN 112582237A CN 201910935100 A CN201910935100 A CN 201910935100A CN 112582237 A CN112582237 A CN 112582237A
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- 230000007246 mechanism Effects 0.000 claims abstract description 127
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims description 69
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/121—Protection of release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
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Abstract
A residual current circuit breaker, includes casing (1), casing (1) is separated for left cavity (3) and right cavity (4) by well lid (2), its characterized in that: an L-pole mechanism (5), an arc extinguish chamber (6) and an L-pole static contact (1101) of an electromagnetic system (11) are arranged in the left chamber (3); baffle (7) are equipped with in right side cavity (4), baffle (7) are left side interlayer (a) and right side interlayer (b) to the upper right corner of right side cavity (4), be equipped with N utmost point mechanism (8) in left side interlayer (a), electric leakage mechanism (9) are equipped with in right side interlayer (b). This residual current circuit breaker adopts L utmost point circuit breaker to add N utmost point mechanism and electric leakage mechanism basis on, carries out improvement design to N utmost point mechanism to carry out the layering overall arrangement to N utmost point mechanism and electric leakage mechanism.
Description
Technical Field
The invention belongs to the technical field of low-voltage electricity, and particularly relates to a residual current circuit breaker.
Background
The residual current circuit breaker (hereinafter referred to as circuit breaker) is mainly suitable for the distribution network with 50Hz of alternating current, 400V of rated voltage and 800A of rated current, is used for providing indirect contact protection for people, can also be used for preventing fire hazard caused by ground fault current generated by insulation damage of equipment, can be used for distributing electric energy and protecting overload and short circuit of circuits and power supply equipment, and can also be used for infrequent switching of the circuits and infrequent starting of the motor.
The existing residual current circuit breaker part products adopt the structure of an 18mm1PN miniature circuit breaker and an 18mm electric leakage mechanism to realize function control, but the structure is limited by the space structure of the miniature circuit breaker, and the breaking capacity is poor; and part of residual current circuit breaker products adopt an L-pole circuit breaker with the thickness of 18mm and an N-pole mechanism with the thickness of 18mm and a leakage mechanism, the N-pole mechanism is distributed at the lower right corner of the shell, and the leakage mechanism is arranged at the upper right side. The driving of the N pole mechanism of the residual current circuit breaker comes from the operating mechanism of the L pole circuit breaker, and the operating mechanism of the L pole circuit breaker is positioned under the electric leakage mechanism, so that a driving rod is needed to be linked with the L pole mechanism positioned at the upper right corner and the N pole static contact positioned at the lower right corner. And one more driving rod increases the assembly process and the cost. Meanwhile, because the N-pole mechanism driving rod and the leakage mechanism are arranged on the same side, in the moving process, moving interference exists between moving parts, and therefore the performance of the product is reduced.
Disclosure of Invention
The invention aims to overcome the technical defects that the existing residual circuit breaker is poor in breaking capacity, multiple in installation procedures and motion interference exists among moving parts, and provides a residual current circuit breaker.
Technical scheme
In order to achieve the technical purpose, the invention provides a residual current circuit breaker, which comprises a shell, wherein the shell is divided into a left chamber and a right chamber by a middle cover, and the residual current circuit breaker is characterized in that: an L-pole mechanism, an arc extinguish chamber and an L-pole static contact of an electromagnetic system are arranged in the left chamber;
the right chamber is provided with a partition board which divides the upper right corner of the right chamber into a left side interlayer and a right side interlayer, an N pole mechanism is arranged in the left side interlayer, and an electric leakage mechanism is arranged in the right side interlayer. By adopting the structure, the interference generated by the movement between the N pole mechanism and the electric leakage mechanism can be avoided.
Furthermore, a release is arranged on the inner side of the leakage mechanism in the right chamber, and a mutual inductor in an electromagnetic system is arranged below the release.
Furthermore, a circuit board support is installed on the lower side of the electric leakage mechanism in the right chamber, an N-pole static contact of the electromagnetic system is installed between the middle cover and the circuit board support, and a circuit board is installed on the circuit board support.
Further, the partition plate is mounted on the middle cover;
the middle cover is provided with a plurality of ribs, and the ribs are matched with the partition plate surface of the partition plate to ensure that the partition plate is horizontal along the vertical direction;
the height of the plurality of ribs is greater than that of the N-pole mechanism, so that the degree of freedom of the N-pole mechanism can be ensured;
the middle cover is provided with a first middle cover shaft, and the first middle cover shaft is arranged in a first clapboard hole on the clapboard;
a second middle cover shaft is embedded in the middle cover and penetrates through the second partition plate hole in the partition plate to be matched with the upper cover;
the first shaft and the second shaft are used for positioning the partition plate;
a third partition plate hole in the partition plate is matched with a first N pole mechanism shaft in the N pole mechanism to fix the rotation center of the N pole mechanism;
the right side of the partition board is provided with a positioning surface for mounting an electric leakage mechanism;
the first partition plate shaft is arranged on the partition plate and is matched with a first leakage mechanism hole on the leakage mechanism, and the first partition plate shaft is the rotating center of the leakage mechanism;
the partition plate is provided with a limiting rib which is matched with the second surface on the electric leakage mechanism to limit the position of the electric leakage mechanism during brake opening;
the first partition plate shaft on the partition plate is concentric with the third partition plate hole.
Furthermore, the electromagnetic system comprises a first wiring terminal, a second wiring terminal, a first lead, a second lead, an L-pole static contact, an N-pole static contact and a mutual inductor, wherein the first wiring terminal and the L-pole static contact are welded and connected into a whole through the first lead penetrating through the mutual inductor, and the second wiring terminal and the N-pole static contact are welded and connected into a whole through the second lead penetrating through the mutual inductor;
the first wiring terminal is arranged on one side, located on the circuit breaker base, of the wiring terminal base, a protruding portion on the first wiring terminal is clamped in a first groove, located on one side, of the middle cover of the wiring terminal base, and the protruding portion is welded with a first end of a first wire.
The wiring terminal base is positioned on one side of the middle cover, and a slotted hole is formed by the notch I on the middle cover and is used for penetrating through a second end socket of a first lead welded with the L-pole static contact;
the wiring terminal base is positioned on one side of the circuit breaker base and is spliced with the base by a hole shaft structure I, and the L-pole static contact and the middle cover are arranged at corresponding positions of the base;
a second wiring terminal is arranged on one side, located on the upper cover, of the wiring terminal seat, and an upper cover is arranged on one side, located on the upper cover, of the wiring terminal seat and above the middle cover;
and the wiring terminal seat is positioned on one side of the upper cover and is spliced with the upper cover by using the hole shaft structure II.
By adopting the structure, the electromagnetic system is modularized, convenient and reliable, and the difficulty of assembling and welding is reduced, namely, the wiring terminal, the wire, the mutual inductor and the like are assembled in the wiring terminal base after spot welding, and then are assembled on the shell.
The N-pole mechanism comprises a contact seat, the contact seat is sleeved on a contact seat mounting shaft on the shell and can rotate around the contact seat mounting shaft, one side end of the contact seat is provided with one end of a contact seat shaft, the other end of the contact seat shaft is embedded on the L-pole mechanism, and the L-pole mechanism drives the contact seat to rotate around the contact seat mounting shaft through the contact seat shaft when switching on and switching off;
the contact seat is provided with a moving contact mounting groove, and the moving contact extends into the moving contact mounting groove and is arranged in the moving contact mounting groove by using a moving contact shaft and can rotate around the moving contact shaft.
The moving contact is provided with a moving contact limiting structure on one end side extending into the moving contact mounting groove and the shell and the moving contact, the moving contact limiting structure and an elastic element connected to the moving contact can enable the moving contact to form a dead point position with a contact seat during opening, and the moving contact limiting structure and the elastic element provide final pressure for the moving contact during closing;
the moving contact limiting structure comprises a kidney-shaped hole at one end side of the moving contact extending into the moving contact mounting groove, a limiting hole corresponding to the kidney-shaped hole on the contact seat and a limiting shaft embedded on the shell, one end of the limiting shaft is embedded in a positioning hole arranged on the contact seat mounting shaft and then penetrates through the limiting hole and the kidney-shaped hole, and the tail end of the limiting shaft is fixedly mounted in a partition plate in the shell;
the contact seat is V-shaped, a turning position on the contact seat is provided with a rotating hole, the rotating hole is sleeved on the contact seat mounting shaft, a contact seat shaft is arranged in a contact seat shaft hole at one side end of the contact seat, and the moving contact shaft penetrates through two ends of the moving contact and is fixedly arranged in holes on two side walls of the moving contact mounting groove;
one end of the elastic element is hung in a hanging hole on the moving contact, and the other end of the elastic element is installed on a hanging shaft on the shell;
the rotating center of the contact seat is concentric with the rotating center of the L-pole mechanism;
and one end of the contact seat shaft, which is embedded on the operating mechanism of the L pole, penetrates out of the through hole in the shell.
By adopting the N pole structure, the N pole static contact is arranged at the upper right corner of the shell and is directly linked through the L pole mechanism, so that the number of parts is reduced, the process is simplified, the cost is reduced, and the efficiency is improved.
Furthermore, the second wiring terminal comprises a wiring screw, a wiring frame and a protective sleeve, wherein a threaded hole into which the wiring screw can be screwed is formed in the top of the wiring frame, and the wiring screw is used for inserting and connecting a lead or a busbar of the feeding channel; the bottom of the wiring frame is provided with a baffle plate, and the baffle plate is embedded in an installation groove of the protective sleeve and fixedly installed by utilizing a boss limiting structure;
the boss limiting structure comprises a boss on the inner side surface of the baffle piece, a mounting hole corresponding to the boss is formed in the inner side wall of a mounting groove in the protective sleeve, and a guide notch is formed in the inner side wall of the mounting groove corresponding to the mounting hole;
the boss and the mounting hole are in interference fit;
the outer side wall of the mounting groove of the protecting sleeve covers the blocking piece;
the separation blade with the wire frame formula as an organic whole.
Advantageous effects
The invention provides a residual current circuit breaker, which redesigns one pole of an N pole and a drain electrode on the basis of the integral 2-pole structure. The method comprises the steps of layering the N pole mechanism and the electric leakage mechanism, and improving the design of the N pole mechanism. The whole structure, namely the L-pole circuit breaker (comprising an L-pole mechanism (comprising a moving contact), an arc extinguish chamber and an L-pole static contact) is independently arranged in a left chamber with the length of 18mm, the space is large, and the breaking capacity is good; the N pole mechanism and the electric leakage mechanism are arranged at the upper right corner of the 18mm right cavity; the N pole mechanism is close to the L pole breaker (L level operating mechanism), and direct linkage is conveniently realized. The N-pole mechanism adopts direct linkage, so that the number of parts can be reduced, the process is simplified, the cost is reduced, and the efficiency is improved; meanwhile, the partition plate is arranged, so that the N-pole mechanism can be positioned in a relatively independent chamber, the N-pole mechanism can move freely, and the N-pole mechanism cannot interfere with a leakage mechanism arranged above the partition plate.
Drawings
Fig. 1 is a product diagram of the remaining circuit breakers in the embodiment of the present invention.
Fig. 2 is an exploded view of the remaining circuit breakers in an embodiment of the present invention;
fig. 3a is a schematic diagram of the position of the left chamber and the right chamber of the remaining circuit breakers of an embodiment of the present invention;
fig. 3b is a schematic diagram of the structure of the right chamber of the remaining circuit breaker of the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an L-pole mechanism mounting position in the embodiment of the invention;
FIG. 5 is a schematic diagram of an installation position structure of a leakage mechanism in an embodiment of the present invention;
FIG. 6 is a schematic linkage diagram of an L-pole mechanism and an N-pole mechanism in an embodiment of the invention;
FIG. 7 is a schematic linkage diagram of an L-pole mechanism and a leakage mechanism in an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of the middle cap and the partition plate in the embodiment of the present invention;
FIG. 9a is an exploded view of a spacer mounting structure in an embodiment of the present invention;
FIG. 9b is a schematic diagram of a structure of the position of the partition board in the embodiment of the present invention;
FIG. 10a is an assembled view of an N-pole mechanism in an embodiment of the present invention;
FIG. 10b is an exploded view of an N-pole mechanism in an embodiment of the present invention;
FIG. 10c is a contact block diagram according to an embodiment of the present invention;
FIG. 10d is a drawing illustrating the mounting of a contact block in an embodiment of the present invention;
FIG. 11a is an assembled view of an electromagnetic system in an embodiment of the present invention;
FIG. 11b is a schematic diagram of a connection terminal block according to an embodiment of the present invention;
FIG. 11c is a first schematic view of a mounting structure of a connection terminal block according to an embodiment of the present invention;
FIG. 11d is a schematic view of the housing of the embodiment of the present invention;
fig. 12a is a product diagram of a second terminal in an embodiment of the invention;
FIG. 12b is a schematic view of a first exemplary embodiment of a wire frame;
fig. 12c is a schematic view of the construction of a protective cover in an embodiment of the invention.
Detailed Description
The invention is further explained below with reference to the figures and examples.
Examples
As shown in fig. 1, 2 and 3a,3b, a residual current circuit breaker includes a housing 1, wherein the housing 1 is assembled by a base a, a middle cover 2, a terminal block 1108 and an upper cover 14. The shell 1 is divided into a left chamber 3 and a right chamber 4 by a middle cover 2, and an L-pole mechanism 5, an arc extinguish chamber 6 and an L-pole static contact 1101 of an electromagnetic system 11 are arranged in the left chamber 3; the right chamber 4 is provided with a partition plate 7, the partition plate 7 divides the upper right corner of the right chamber 4 into a left side partition layer a and a right side partition layer b, an N pole mechanism 8 is arranged in the left side partition layer a, and a leakage mechanism 9 is arranged in the right side partition layer b. A release 10 is arranged on the inner side of the leakage mechanism 9 in the right chamber 4, and a mutual inductor 1102 in an electromagnetic system 11 is arranged below the release 10. A circuit board support 12 is mounted on the lower side of the leakage mechanism 9 in the right chamber 4, an N-pole static contact 1103 of the electromagnetic system 11 is mounted between the middle cover 2 and the circuit board support 12, and a circuit board 13 is mounted on the circuit board support 12.
As shown in fig. 9a and 9b, in order to better achieve the purpose of avoiding the interference generated by the movement between the N-pole mechanism 8 and the leakage mechanism 9. The clapboard 7 is arranged on the middle cover 2; the middle cover 2 is provided with a plurality of ribs 201, and the ribs 201 are matched with the partition plate surface 701 of the partition plate 7 to ensure that the partition plate 7 is horizontal along the vertical direction; the height of the plurality of ribs 201 is greater than that of the N-pole mechanism 8, so that the degree of freedom of the N-pole mechanism 8 is guaranteed; the middle cover 2 is provided with a middle cover shaft I202, and the middle cover shaft I202 is arranged in a partition plate hole I702 on the partition plate 7; a second middle cover shaft 203 is embedded in the middle cover 2, and the second middle cover shaft 203 penetrates through a second partition plate hole 703 in the partition plate 7 and then is matched with the upper cover 14; the first middle cover shaft 202 and the second middle cover shaft 203 are used for positioning the partition plate 3; a third partition hole 704 on the partition plate 7 is matched with a first N pole mechanism shaft 801 on the N pole mechanism 8 to fix the rotation center of the N pole mechanism 8; a positioning surface 705 is arranged on the right side of the partition plate 7 and used for mounting the electric leakage mechanism 9; a first partition plate shaft 706 is arranged on the partition plate 7, the first partition plate shaft 706 is installed in a matching manner with a first leakage mechanism hole 901 on the leakage mechanism 9, and the first partition plate shaft 706 is the rotation center of the leakage mechanism 9; a limiting rib 707 is arranged on the partition plate 7, and is matched with a second surface 902 on the electric leakage mechanism 9 to limit the position of the electric leakage mechanism 9 during brake opening; the first baffle shaft 706 on the baffle plate 7 is concentric with the third baffle hole 704.
As shown in fig. 11a, 11b, 11c and 11d, the electromagnetic system 11 includes a first connection terminal 1104, a second connection terminal 1105, a first lead 1106, a second lead 1107, an L-pole stationary contact 1101, an N-pole stationary contact 1103 and a transformer 1102, the first connection terminal 1104 and the L-pole stationary contact 1101 are welded together by the first lead 1106 passing through the transformer 1102, and the second connection terminal 1105 and the N-pole stationary contact 1103 are welded together by the second lead 1107 passing through the transformer 1102; in particular, the method comprises the following steps: the first wiring terminal 1104 is arranged on one side of the wiring terminal base 1108, which is positioned on the circuit breaker base A, the extension 1104a of the first wiring terminal 1104 is clamped in the first groove 1108a of the wiring terminal base 1108, which is positioned on one side of the middle cover 2, and the extension 1104a is welded with the first end 1106a of the first conductor 1106. The wiring terminal base 1108 is positioned at one side of the middle cover 2 and forms a slot 204 with a notch I on the middle cover 2 for penetrating through a second terminal 1106b of a first lead 1106 welded with the L-pole fixed contact 1101; the wiring terminal base 1108 is positioned at one side of the circuit breaker base A and is spliced with the base A by a hole-shaft structure I, and the L-pole static contact 1101 and the middle cover 2 are installed at corresponding positions of the base A; in this embodiment, the first hole-shaft structure is a shaft one of the connection terminal block 1108 located at one side of the circuit breaker base a and a hole one on the base a. A second wiring terminal 1105 is arranged on one side of the wiring terminal base 1108, which is positioned on the upper cover 14, and the upper cover 14 is arranged on one side of the wiring terminal base 1108 and above the middle cover 2; the terminal block 1108 is located at one side of the upper cover 14 and is assembled with the upper cover 14 by using the hole-axis structure. In this embodiment, the second hole-shaft structure is a shaft two of the connection terminal block 1108 located at one side of the upper cover 14 and a hole two of the upper cover 14, which are installed in a matching manner. Electromagnetic system modularization, can dismantle, convenient and reliable, the equipment that has reduced, the welded degree of difficulty, assemble the wiring terminal seat after spot welding such as binding post, wire and mutual-inductor promptly, assemble on the casing again.
As shown in fig. 12a, 12b and 12c, the second connection terminal 1105 includes a connection screw 1105a, a connection frame 1105b and a protection sleeve 1105c, in this embodiment, the protection sleeve 1105c is an insulating member, a screw hole 1105b01 into which the connection screw 1105a can be screwed is arranged on the top of the connection frame 1105b, and the connection screw 1105a is used for plugging a lead or a bus bar of the feeding channel 1105b 02; a blocking piece 1105d is arranged at the bottom of the wire frame 1105b, and the blocking piece 1105d and the wire frame 1105b are integrated. The baffle plate 1105d is embedded in the mounting groove 1105c01 of the protective sleeve 1105c and is fixedly mounted by a boss limit structure; in this embodiment, the boss limiting structure includes a boss 1105d01 on an inner side surface of the stopper 1105d, a mounting hole 1105c02 corresponding to the boss 1105d01 is provided on an inner side wall of a mounting groove 1105c01 on the shield 1105c, and a guide notch 1105c03 corresponding to the mounting hole 1105c02 is provided on an inner side wall of the mounting groove 1105c 01; the boss 1105d01 and the mounting hole 1105c02 are in interference fit; the outer side wall of the mounting groove 1105c01 of the protecting jacket 1105c covers the blocking sheet 1105 d;
as shown in fig. 10a, 10b, 10c and 10d, the N-pole mechanism 8 includes a contact block 802, the contact block 802 is sleeved on the contact block mounting shaft 101 on the housing 1 and can rotate around the contact block mounting shaft 101, one side end of the contact block 802 is provided with one end of a contact block shaft 802a, the other end of the contact block shaft 802a is embedded on the L-pole mechanism, and when the brake is switched on and off, the L-pole mechanism drives the contact block 802 to rotate around the contact block mounting shaft 101 through the contact block shaft 802 a; the N pole static contact of the N pole structure is installed at the upper right corner of the shell and directly linked through the L pole mechanism, so that the process is simplified, the cost is reduced, and the efficiency is improved. As shown in fig. 4, the L-pole mechanism 5 includes an L-pole handle 51, an L-pole connecting rod 52, an L-pole jumper 53, an L-pole mechanism seat 55 embedded with an L-pole shaft 54, an L-pole latch 56, and an L-pole stationary contact seat 57 mounted with an L-pole movable contact. An L pole shaft 54 is embedded on the L pole mechanism seat 55, is the rotating center of the L pole jump buckle 53, and can simultaneously pass through a through hole formed in the middle cover 2 to be matched with the upper hole of the N pole mechanism 8, so that the linkage of the L pole mechanism 5 and the N pole mechanism is realized;
in particular, the method comprises the following steps: the contact seat 802 is provided with a moving contact mounting groove 802b, and the moving contact 803 extends into the moving contact mounting groove 802b and is mounted in the moving contact mounting groove 802b by a moving contact shaft 803a and can rotate around the moving contact shaft 803 a. A moving contact limiting structure is arranged on one end side of the moving contact 803 extending into the moving contact mounting groove 802b, the shell 1 and the moving contact 803, the moving contact limiting structure and an elastic piece 804 connected to the moving contact 803 can enable the moving contact 803 to form a dead point position with the contact base 802 during opening, and when closing, the moving contact limiting structure and the elastic piece 804 provide final pressure for the moving contact 803; in this embodiment, the moving contact limiting structure includes a kidney-shaped hole 803b on one end side of the moving contact 803 extending into the moving contact mounting groove 802b, a limiting hole 802c corresponding to the kidney-shaped hole 803b on the contact base 802, and a limiting shaft 102 embedded on the housing 1, one end of the limiting shaft 102 is embedded in a positioning hole 802f arranged on the contact base mounting shaft 101 and then passes through the limiting hole 802c and the kidney-shaped hole 803b, and the tail end is fixedly mounted in the partition 7 in the housing 1; the contact seat 802 is V-shaped, a turning position on the contact seat 802 is provided with a rotating hole 802d, the rotating hole 802d is sleeved on the contact seat mounting shaft 101, a contact seat shaft 802a is installed in a contact seat shaft hole 802e at one side end of the contact seat 802, and two ends of a moving contact shaft 803a penetrating through the moving contact 803 are fixedly installed in holes on two side walls of the moving contact mounting groove 802 b; one end of the elastic element 804 is hung in a hanging hole 803c of the moving contact 803, and the other end is installed on a hanging shaft 103 on the shell 1; the rotation center of the contact seat 802 is concentric with the rotation center of the L-pole mechanism; the contact base shaft 802a is inserted into the operating mechanism of the L pole, and one end of the contact base shaft penetrates through a through hole in the housing 1.
As shown in fig. 5,6, 7 and 8, the leakage mechanism 9 includes a leakage handle 903, a leakage link 904, a leakage jump buckle 905, a leakage mechanism seat 907 embedded with a leakage linkage shaft 906, a leakage lock 908, a leakage energy storage spring 909 and a leakage elastic blocking piece 910; the leakage mechanism seat 907 is installed on the partition plate 7, and the linkage shaft 906 penetrates through the first through hole in the partition plate 7 and the second through hole in the middle cover 2 to be matched with the groove of the L-pole mechanism 5. The first through hole and the second through hole are in the same vertical direction; the leakage jump buckle 905 and the leakage lock 908 are pivoted on the leakage mechanism seat 907; the electric leakage handle 903 and the electric leakage elastic baffle plate 910 are pivoted on the middle cover 2, two ends of the electric leakage connecting rod 904 are respectively connected with the electric leakage handle 903 and the electric leakage jump buckle 905, and the electric leakage jump buckle 905 and the electric leakage lock 908 are in disconnectable connection;
when the transformer 1102 of the electromagnetic system 11 detects an unbalanced current and reaches a threshold value of the release 10, the release 10 releases and pushes the leakage elastic blocking piece 910 to disconnect the leakage jump buckle 905 and the leakage locking buckle 908, and at this time, the leakage mechanism base 907 and the leakage linkage shaft 906 embedded in the leakage mechanism base 907 push away the L-pole mechanism 5 under the action of the leakage energy storage spring 909 to disconnect the product, thereby realizing the leakage protection function. The test loop comprises a test button B1 and a test button B2, the test button B2 is installed on the partition board 7, one end of the test button B2 is matched with the test button B1, and when a user presses the test button B1, the test button B2 is contacted with the hanging shaft 103, and the test loop B is conducted; in this embodiment, the hanging shaft 103 is embedded in the middle cover 2 and is hung with an elastic member 804, which is a tension spring in this embodiment; the hanging shaft 103 is matched with the upper cover 14 through a first through hole penetrating through the partition plate 7; the hanging shaft 103 is preferably a round shaft, the hanging shaft 103, the test button spring B2 and the tension spring are made of metal, preferably stainless steel, and the middle cover 2 is provided with a window 203 for observing the connection and disconnection states of the contacts; a third through hole is formed for matching with the test button B1, and the through hole is preferably oval; the characteristic surface of the breaker handle is matched with the extending structure of the leakage handle 903, so that the breaker mechanism and the leakage mechanism can be operated to be switched on conveniently; and when non-leakage faults (short circuit and overload) occur, the leakage handle is not disconnected along with the breaker handle C, so that the leakage fault indicating function is realized.
The structure, ratio, size and the like shown in the drawings of the present embodiment are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the limit conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle", "clockwise" and "counterclockwise" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the substantial changes, but also considered to be the scope of the present invention.
Claims (7)
1. A residual current circuit breaker, includes casing (1), casing (1) is separated for left cavity (3) and right cavity (4) by well lid (2), its characterized in that: an L-pole mechanism (5), an arc extinguish chamber (6) and an L-pole static contact (1101) of an electromagnetic system (11) are arranged in the left chamber (3);
baffle (7) are equipped with in right side cavity (4), baffle (7) are left side interlayer (a) and right side interlayer (b) to the upper right corner of right side cavity (4), be equipped with N utmost point mechanism (8) in left side interlayer (a), electric leakage mechanism (9) are equipped with in right side interlayer (b).
2. A residual current circuit breaker, as claimed in claim 1, characterized in that: and a release (10) is arranged on the inner side of the leakage mechanism (9) in the right chamber (4), and a mutual inductor (1102) in an electromagnetic system (11) is arranged below the release (10).
3. A residual current circuit breaker, as claimed in claim 1, characterized in that: and a circuit board support (12) is arranged on the lower side of the electric leakage mechanism (9) in the right chamber (4), an N-pole static contact (1103) of the electromagnetic system (11) is arranged between the middle cover (2) and the circuit board support (12), and a circuit board (13) is arranged on the circuit board support (12).
4. A residual current circuit breaker, as claimed in claim 1, characterized in that: the clapboard (7) is arranged on the middle cover (2);
the middle cover (2) is provided with a plurality of ribs (201), and the ribs (201) are matched with a partition plate surface (701) of the partition plate (7) to ensure that the partition plate (7) is horizontal along the vertical direction;
the height of the plurality of ribs (201) is greater than that of the N-pole mechanism (8), so that the degree of freedom of the N-pole mechanism (8) can be guaranteed;
a first middle cover shaft (202) is arranged on the middle cover (2), and the first middle cover shaft (202) is arranged in a first partition plate hole (702) in the partition plate (7);
a second middle cover shaft (203) is embedded in the middle cover (2), and the second middle cover shaft (203) penetrates through a second partition plate hole (703) in the partition plate (7) and then is matched with the upper cover (14);
a third partition plate hole (704) in the partition plate (7) is matched with a first N pole mechanism shaft (801) in the N pole mechanism (8) to fix the rotation center of the N pole mechanism (8);
a positioning surface (705) is arranged on the right side of the partition plate (7) and used for mounting an electric leakage mechanism (9);
a first partition plate shaft (706) is arranged on the partition plate (7), the first partition plate shaft (706) is installed in a matching mode with a first leakage mechanism hole (901) in the leakage mechanism (9), and the first partition plate shaft (706) is the rotating center of the leakage mechanism (9);
and a limiting rib (707) is arranged on the partition plate (7) and is matched with a second surface (902) on the electric leakage mechanism (9) to limit the position of the electric leakage mechanism (9) when the electric leakage mechanism is used for separating a brake.
The first partition plate shaft (706) on the partition plate (7) is concentric with the third partition plate hole (704).
5. A residual current circuit breaker, as claimed in claim 1, characterized in that: the electromagnetic system (11) comprises a first wiring terminal (1104), a second wiring terminal (1105), a first lead (1106), a second lead (1107), an L-pole static contact (1101), an N-pole static contact (1103) and a mutual inductor (1102), wherein the first wiring terminal (1104) and the L-pole static contact (1101) are welded and connected into a whole through the first lead (1106) penetrating through the mutual inductor (1102), and the second wiring terminal (1105) and the N-pole static contact (1103) are welded and connected into a whole through the second lead (1107) penetrating through the mutual inductor (1102);
the first wiring terminal (1104) is arranged on one side of a wiring terminal base (1108) positioned on the circuit breaker base (A), a protruding part (1104a) on the first wiring terminal (1104) is clamped in a first groove (1108a) of the wiring terminal base (1108) positioned on one side of the middle cover (2), and the protruding part (1104a) is welded with a first end (1106a) of a first lead (1106).
The wiring terminal base (1108) is positioned on one side of the middle cover (2) and forms a slotted hole (204) with a notch I on the middle cover (2) for penetrating through a second terminal (1106b) of a first lead (1106) welded with the L-pole static contact (1101);
the wiring terminal base (1108) is positioned on one side of the circuit breaker base (A) and is spliced with the base (A) by a hole-shaft structure, and the L-pole static contact (1101) and the middle cover (2) are installed at corresponding positions of the base (A);
a second wiring terminal (1105) is arranged on one side, located on the upper cover (14), of the wiring terminal base (1108), and the upper cover (14) is arranged on one side, located on the upper cover (14), of the wiring terminal base (1108) and above the middle cover (2);
the wiring terminal seat (1108) is positioned on one side of the upper cover (14) and is assembled with the upper cover (14) by utilizing the hole shaft structure II.
6. A residual current circuit breaker, as claimed in claim 1, characterized in that: the N-pole mechanism (8) comprises a contact seat (802), the contact seat (802) is sleeved on a contact seat mounting shaft (101) on the shell (1) and can rotate around the contact seat mounting shaft (101), one side end of the contact seat (802) is provided with one end of a contact seat shaft (802a), the other end of the contact seat shaft (802a) is embedded on the L-pole mechanism, and the L-pole mechanism drives the contact seat (802) to rotate around the contact seat mounting shaft (101) through the contact seat shaft (802a) when switching on and switching off;
the contact seat (802) is provided with a moving contact mounting groove (802b), and the moving contact (803) extends into the moving contact mounting groove (802b) and is arranged in the moving contact mounting groove (802b) by using a moving contact shaft (803a) and can rotate around the moving contact shaft (803 a).
One end side of the moving contact (803) extending into the moving contact mounting groove (802b) and one end side of the shell (1) and the moving contact (803) are provided with a moving contact limiting structure, the moving contact limiting structure and an elastic piece (804) connected to the moving contact (803) can enable the moving contact (803) to form a dead point position with the contact base (802) during opening, and during closing, the moving contact limiting structure and the elastic piece (804) provide final pressure for the moving contact (803);
the moving contact limiting structure comprises a kidney-shaped hole (803b) at one end side of a moving contact (803) extending into the moving contact mounting groove (802b), a limiting hole (802c) corresponding to the kidney-shaped hole (803b) on the contact seat (802) and a limiting shaft (102) embedded on the shell (1), one end of the limiting shaft (102) is embedded in a positioning hole (802f) formed in the contact seat mounting shaft (101) and then penetrates through the limiting hole (802c) and the kidney-shaped hole (803b), and the tail end of the limiting shaft is fixedly mounted in a partition plate (7) in the shell (1);
the contact seat (802) is V-shaped, a turning position on the contact seat (802) is provided with a rotating hole (802d), the rotating hole (802d) is sleeved on the contact seat mounting shaft (101), a contact seat shaft (802a) is arranged in a contact seat shaft hole (802e) at one side end of the contact seat (802), and two ends of a movable contact shaft (803a) penetrating through a movable contact (803) are fixedly arranged in holes on two side walls of the movable contact mounting groove (802 b);
one end of the elastic element (804) is hung in a hanging hole (803c) on the moving contact (803), and the other end of the elastic element is installed on a hanging shaft (103) on the shell (1);
the rotation center of the contact seat (802) is concentric with the rotation center of the L-pole mechanism;
one end of the contact seat shaft (802a) embedded on the operating mechanism of the L pole penetrates out of the through hole in the shell (1).
7. A residual current circuit breaker, as claimed in claim 1, characterized in that: the first wiring terminal (1104) or the second wiring terminal (1105) comprises a wiring screw (1105a), a wiring frame (1105b) and a protective sleeve (1105c), wherein a threaded hole (1105b01) into which the wiring screw (1105a) can be screwed is formed in the top of the wiring frame (1105b), and the wiring screw (1105a) is used for plugging a lead or a bus bar of the feeding channel (1105b 02); the bottom of the wire frame (1105b) is provided with a blocking piece (1105d), and the blocking piece (1105d) is embedded in the mounting groove (1105c01) of the protective sleeve (1105c) and fixedly mounted by a boss limit structure;
the boss limiting structure comprises a boss (1105d01) on the inner side surface of the baffle plate (1105d), a mounting hole (1105c02) corresponding to the boss (1105d01) is arranged on the inner side wall of a mounting groove (1105c01) on the protective sleeve (1105c), and a guide notch (1105c03) is arranged on the inner side wall of the mounting groove (1105c01) corresponding to the mounting hole (1105c 02);
the boss (1105d01) and the mounting hole (1105c02) are in interference fit;
the outer side wall of the mounting groove (1105c01) of the protecting sleeve (1105c) is sealed to cover the blocking sheet (1105 d);
the blocking piece (1105d) and the wire connecting frame (1105b) are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935100.6A CN112582237B (en) | 2019-09-29 | 2019-09-29 | Residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935100.6A CN112582237B (en) | 2019-09-29 | 2019-09-29 | Residual current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112582237A true CN112582237A (en) | 2021-03-30 |
| CN112582237B CN112582237B (en) | 2024-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910935100.6A Active CN112582237B (en) | 2019-09-29 | 2019-09-29 | Residual current circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN112582237B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023138042A1 (en) * | 2022-01-21 | 2023-07-27 | 浙江正泰电器股份有限公司 | Circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989518A (en) * | 2009-08-06 | 2011-03-23 | 浙江正泰电器股份有限公司 | Phase-line and neutral-line type residual current action breaker |
| CN102610448A (en) * | 2012-03-31 | 2012-07-25 | 温州奥来电器有限公司 | Two-way connectable electromagnetic leakage circuit breaker with overcurrent protection |
| CN211150481U (en) * | 2019-09-29 | 2020-07-31 | 上海良信电器股份有限公司 | Residual current circuit breaker |
-
2019
- 2019-09-29 CN CN201910935100.6A patent/CN112582237B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989518A (en) * | 2009-08-06 | 2011-03-23 | 浙江正泰电器股份有限公司 | Phase-line and neutral-line type residual current action breaker |
| CN102610448A (en) * | 2012-03-31 | 2012-07-25 | 温州奥来电器有限公司 | Two-way connectable electromagnetic leakage circuit breaker with overcurrent protection |
| CN211150481U (en) * | 2019-09-29 | 2020-07-31 | 上海良信电器股份有限公司 | Residual current circuit breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023138042A1 (en) * | 2022-01-21 | 2023-07-27 | 浙江正泰电器股份有限公司 | Circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN112582237B (en) | 2024-10-01 |
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