CN112885649B - Auxiliary contact assembly for contactor - Google Patents
Auxiliary contact assembly for contactor Download PDFInfo
- Publication number
- CN112885649B CN112885649B CN201911204970.2A CN201911204970A CN112885649B CN 112885649 B CN112885649 B CN 112885649B CN 201911204970 A CN201911204970 A CN 201911204970A CN 112885649 B CN112885649 B CN 112885649B
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- Prior art keywords
- reed switch
- circuit board
- auxiliary contact
- contactor
- driving
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 244000273256 Phragmites communis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The utility model provides an auxiliary contact subassembly for contactor, includes casing (1), installs circuit board group (2), support (5) and drive pendulum rod (6) in this casing, its characterized in that: the support (5) can move up and down in the shell (1), and the support (5) can drive the driving swing rod (6) to swing in the moving process; in the process of driving the swing rod (6) to swing, the permanent magnets (4, 4') arranged at the two ends of the swing rod can correspondingly approach to or depart from the corresponding reed switch I (203) and the corresponding reed switch II (204), so that the reed switch I (203) and the reed switch II (204) are connected or disconnected. The auxiliary contact assembly for the contactor provided by the invention can be matched with a wider range of travel, effectively control weak signals and realize the optimal use of space.
Description
Technical Field
The invention belongs to the technical field of contactors, and particularly relates to an auxiliary contact assembly for a contactor, which utilizes characteristics of a reed switch and a permanent magnet to switch on and off signals.
Background
The contactor belongs to a large-scale control electric appliance, is mainly used for frequently switching on or switching off an AC/DC main circuit and a large-capacity control circuit, is often provided with an auxiliary contact device for realizing the functions of self-locking, interlocking, contactor state indication and the like of the contactor, and adopts an open type contact structure, the contact surface is easy to be polluted by the external environment, and the contact conduction is poor; the second is to adopt the closed dry reed pipe structure, its working principle is to place the reed in the glass tube or plastic envelope pipe, thus use the magnet to get close to or keep away from the dry reed pipe to control the switch-on or breaking of the dry reed pipe, the dry reed pipe contact surface is sealed, not polluted by external environment, but because the sensitivity of the dry reed pipe is higher, the phenomenon that the contact miscwitch caused by electromagnetic interference appears easily when the auxiliary contact is hung on the heavy current contactor to use. In addition, most of common reed switch auxiliary contacts are arranged on two sides of the support to control the on-off switching of different reed switches, the relative positions of the magnet and the reed switch are limited by the support, the space optimization and the stroke expansion are greatly limited, and the improvement of the performance of the auxiliary contacts is limited.
Disclosure of Invention
The invention aims to provide an auxiliary contact assembly for a contactor, which can match a wider range of travel, effectively control weak signals and realize the optimal use of space at the same time, aiming at the technical defects that the conventional auxiliary contact is easy to be subjected to electromagnetic interference to cause the contact to be switched by mistake and the installation space structure is limited by a bracket and is difficult to optimize.
Technical proposal
In order to achieve the technical purpose, the auxiliary contact assembly for the contactor provided by the invention comprises a shell, a circuit board group, a bracket and a driving swing rod, wherein the circuit board group, the bracket and the driving swing rod are arranged in the shell, and the auxiliary contact assembly is characterized in that: the support can move up and down in the shell, and the support can drive the driving swing rod to swing in the moving process; in the process of driving the swing rod to swing, permanent magnetic energy arranged at two ends of the swing rod can correspondingly approach to or depart from the corresponding reed switch I and the corresponding reed switch II, so that the corresponding control of switching on or switching off of the reed switch I and the reed switch II is realized.
Further, the driving swing rod is connected with the shell through a shaft, and the support can drive the driving swing rod to swing around the shaft in the up-and-down movement process in the shell.
Further, the first reed switch and the second reed switch are respectively arranged at the left side and the right side of the bracket.
Further, the circuit board group comprises a first circuit board and a second circuit board, wherein the first circuit board is provided with at least one first reed switch, the second circuit board is provided with at least one second reed switch, and the first circuit board and the second circuit board are respectively arranged at two sides of the bracket.
Further, a first wiring terminal and a second wiring terminal are correspondingly arranged at two ends of the first wiring board and the second wiring board, and the first wiring terminal and the second wiring terminal are electrically connected through a corresponding first reed switch and a corresponding second reed switch.
Further, the driving swing rod comprises a turntable part, the disk surface of the turntable part extends out of a protruding shaft, the protruding shaft extends into a travel slot hole on the bracket, the outer edge surfaces of the turntable part are positioned at the left side and the right side of the bracket and correspondingly extend out of a left supporting rod and a right supporting rod respectively, and permanent magnets are arranged at the end parts of the left supporting rod and the right supporting rod;
The support can drive the protruding shaft through the stroke slotted hole in the up-and-down movement process in the shell so as to drive the turntable part to swing back and forth.
Further, the travel slot hole comprises a first idle travel section and a second idle travel section which are vertically parallel to each other, and the first idle travel section and the second idle travel section are connected through a driving section. By adopting the structure, the idle stroke section can be designed according to the physical parameters of the closing range of the reed switch, the distance between the magnet and the reed switch, the included angle of the driving swing rod and the like. The relevant stroke length may also be determined depending on the internal and external dimensions of the auxiliary contact allowed. The stroke design is flexible, the reed switch is effectively protected, the reed switch is stable in connection, and the installation is convenient.
Further, the driving section is an oblique line section, and two ends of the driving section are in transitional connection with the first idle stroke section and the second idle stroke section in a circular arc.
Further, a magnetic shielding piece is arranged on the inner surface of the shell and positioned on the outer side of the permanent magnet and used for shielding interference of an external magnetic field.
Further, a guide limiting protrusion is arranged on the support, and the guide limiting protrusion is matched with the groove on the shell, and can move up and down along the groove.
Advantageous effects
According to the auxiliary contact assembly for the contactor, provided by the invention, a mode of controlling the on-off of the reed switch by installing the permanent magnet on the driving swing rod is adopted, so that the range of travel can be matched, weak signals can be effectively controlled, and meanwhile, the space can be optimally used. Meanwhile, an idle stroke section is arranged, the stroke design is flexible, the reed switch is effectively protected, the reed switch is stable in connection, and the installation is convenient.
Drawings
Fig. 1 is a schematic view of a conventional auxiliary contact.
Fig. 2 is a general assembly view of an auxiliary contact assembly in an embodiment of the invention.
Fig. 3 is a schematic top view of an auxiliary contact assembly in accordance with an embodiment of the present invention.
Fig. 4 is a schematic view of an initial state of the auxiliary contact assembly according to the embodiment of the present invention.
Fig. 5 is a schematic view of an auxiliary contact assembly in a lost motion state according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an actuation state of the auxiliary contact assembly according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a circuit board set according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of the assembly of the bracket and the driving swing rod in the embodiment of the invention.
Fig. 9 is a schematic structural view of a housing according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a bracket according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a driving swing link in an embodiment of the present invention.
Fig. 12 is a schematic view of the assembly of the driving swing link and the housing in the embodiment of the invention.
Fig. 13 is a schematic view of the structure of the assembly of the driving swing link and the shaft in the embodiment of the invention.
Fig. 14 is a schematic view showing the structure of the assembly of the bracket and the housing in the embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Examples
As shown in fig. 2 and 3, an auxiliary contact assembly for a contactor includes a housing 1, a circuit board assembly 2 and a bracket 5, wherein the bracket 5 can move up and down in the housing 1, specifically in this embodiment, as shown in fig. 14, a guiding and limiting protrusion 502 is provided on the bracket 5, and the guiding and limiting protrusion 502 is mounted in cooperation with a groove 101 on the housing 1 and can move up and down linearly along the groove 101 so as to realize that the bracket 5 can move up and down in the housing 1. As shown in fig. 11, 12 and 13, the support 5 is provided with a driving swing rod 6, the driving swing rod 6 is connected with the housing 1 through a shaft 8, holes 605,605' at two ends of the driving swing rod 6 are provided with permanent magnets 4,4', the support 5 can drive the driving swing rod 6 to swing around the shaft 8 in the up-and-down motion process in the housing 1, and the permanent magnets 4,4' at two ends of the driving swing rod 6 are correspondingly close to or far from the corresponding reed switch one 203 and the corresponding reed switch two 204 in the swinging process of the driving swing rod 6 around the shaft 8, so that the corresponding control of the connection or disconnection of the reed switch one 203 and the reed switch two 204 is realized. The first reed switch 203 and the second reed switch 204 are respectively arranged at the left side and the right side of the bracket 5.
As shown in fig. 9, the inner surface of the housing 1 is provided with a magnetic shield 7 outside the permanent magnets 4,4', and the shield 7 itself is a high magnetic permeability material with a small magnetic resistance. When the permanent magnet and the magnetic field generated by external large current generate, the magnetic induction lines in the magnetic field form a closed curve along the path with smaller magnetic resistance, namely, form a closed curve along the path of the shielding piece 7. The magnetic field generated at this time acts on the shielding member, so that the magnetic field acting on the reed switch is shielded, and the contact state of the reed switch is not affected by the interference of the generated magnetic field.
As shown in fig. 7, the circuit board set 2 includes a first circuit board 201 and a second circuit board 202, at least one first reed switch 203 is mounted on the first circuit board 201, at least one second reed switch 204 is mounted on the second circuit board 202, and the first circuit board 201 and the second circuit board 202 are separated at two sides of the bracket 5. The two ends of the first circuit board 201 and the second circuit board 202 are correspondingly provided with first wiring terminals 301 and 301 'and second wiring terminals 302 and 302', and the first wiring terminals 301 and 301 'and the second wiring terminals 302 and 302' are electrically connected through the corresponding first reed switch 203 and the second reed switch 204.
As shown in fig. 8 and 11, the driving swing rod 6 includes a turntable part 601, the disk surface of the turntable part 601 extends out of a protruding shaft 602, the protruding shaft 602 extends into a travel slot 501 on the bracket 5, the outer edge surfaces of the turntable part 601 are located at the left and right sides of the bracket and respectively extend out of a left support rod 603 and a right support rod 604, and permanent magnets 4,4' are mounted at the ends of the left support rod 603 and the right support rod 604;
The support 5 can drive the convex shaft 602 through the stroke slot 501 in the process of moving up and down in the shell 1, so as to drive the turntable 601 to swing back and forth. As shown in fig. 10, the travel slot 501 in this embodiment includes a first idle travel section 501a and a second idle travel section 501b that are vertically parallel to each other, and the first idle travel section 501a and the second idle travel section 501b are connected by a driving section 501 c. The driving section 501c is a diagonal section, and two ends of the driving section 501c are in arc transition connection with the first idle stroke section 501a and the second idle stroke section 501 b.
As shown in fig. 4, when the auxiliary contact assembly is in the initial state, the right pole 604 on the right side is at a low point, and the permanent magnet 4' mounted on the end of the right pole 604 is close to the second reed pipe 204 on the right side, so that the second reed pipe 204 is turned on, and at this time, the permanent magnet 4 mounted on the left pole 603 on the left side is far away from the first reed pipe 203 on the left side; as shown in fig. 5, when the auxiliary contact assembly starts to suck, during the downward movement of the bracket 5, the protruding shaft 602 moves in the first idle stroke section 501a, only has displacement in the vertical direction, and does not drive the turntable to drive the turntable 601 to rotate, and when the protruding shaft 602 enters the driving section 501c from the arc transition connection position of the driving section 501c and the first idle stroke section 501a, there is horizontal displacement. The rotary table part 601 starts to rotate at the protruding shaft 602, the right permanent magnet 4 'starts to leave the right reed pipe two 204, the left permanent magnet 4 is not close to the left reed pipe two 203, the bracket 5 continues to move downwards to drive the rotary table part 601 to continue rotating, the left permanent magnet 4 mounted on the left support rod 603 is close to the left reed pipe one 203 to enable the reed pipe one 203 to be connected, at this time, the permanent magnet 4' mounted on the end of the right support rod 604 is far away from the right reed pipe two 204, at this time, the bracket 5 still continues to move downwards, the protruding shaft 602 leaves from the arc transition joint of the driving section 501c and the idle section two 501b to enter the idle section two 501b, the protruding shaft 602 moves in the idle section two 501ba, only moves in the vertical direction, and does not drive the rotary table part 601 to rotate, as shown in fig. 6. In the specific implementation process, the idle stroke section can be designed according to physical parameters such as the closing range of the reed switch, the distance between the magnet and the reed switch, the included angle of the driving swing rod and the like. The relevant stroke length may also be determined depending on the internal and external dimensions of the auxiliary contact allowed.
The auxiliary contact assembly for the contactor can be matched with a wider range of travel, effectively control weak signals, and simultaneously design a rotation range of a driving swing rod according to the action range of the reed switch, so that the normally-open normally-closed reed switch can not be connected or disconnected at the same time, and the optimal use of space is realized. Meanwhile, an idle stroke section is arranged, the stroke design is flexible, the reed switch is effectively protected, the reed switch is stable in connection, and the installation is convenient
It should be noted that, the number of the reed pipes in the embodiment of the present invention is not limited to the number mentioned in the embodiment of the present invention, and based on the technical idea of the present invention, the number of any reed pipes can only realize the switching of the on-off states of the auxiliary contacts with different numbers of types, and should not be considered as being outside the protection scope required by the present invention.
The structures, proportions, sizes, etc. shown in the drawings of the present embodiment are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, so that any structural modifications, proportional changes, or size adjustment should not be construed as essential to the invention, but should still fall within the scope of the invention as defined by the appended claims. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "anticlockwise" and the like are used in the present specification for convenience of description, and are not intended to limit the scope of the present invention, and the relative relation changes or modifications thereof are considered to be within the scope of the present invention without substantial modification of the technical content.
Claims (7)
1. The utility model provides an auxiliary contact subassembly , for contactor includes casing (1), installs circuit board group (2), support (5) and drive pendulum rod (6) in this casing, its characterized in that: the support (5) can move up and down in the shell (1), and the support (5) can drive the driving swing rod (6) to swing in the moving process; in the process of driving the swing rod (6) to swing, permanent magnets (4, 4') arranged at two ends of the swing rod can correspondingly approach to or depart from a corresponding reed switch I (203) and a corresponding reed switch II (204), so that the reed switch I (203) and the reed switch II (204) can be correspondingly controlled to be connected or disconnected;
The driving swing rod (6) is connected with the shell (1) through a shaft (8), and the bracket (5) can drive the driving swing rod (6) to swing around the shaft (8) in the up-and-down movement process in the shell (1);
the first reed switch (203) and the second reed switch (204) are respectively arranged at the left side and the right side of the bracket (5);
The driving swing rod (6) comprises a turntable part (601), a convex shaft (602) extends out of the disk surface of the turntable part (601), the convex shaft (602) extends into a travel slot hole (501) in the bracket (5), the outer edge surface of the turntable part (601) is positioned at the left side and the right side of the bracket and correspondingly extends out of a left supporting rod (603) and a right supporting rod (604), and permanent magnets (4, 4') are arranged at the end parts of the left supporting rod (603) and the right supporting rod (604);
The support (5) can drive the convex shaft (602) through the stroke slotted hole (501) in the up-and-down movement process in the shell (1) so as to drive the turntable part (601) to swing back and forth.
2. An auxiliary contact assembly for a contactor as claimed in claim 1, wherein: the circuit board group (2) comprises a first circuit board (201) and a second circuit board (202), wherein at least one first reed pipe (203) is arranged on the first circuit board (201), at least one second reed pipe (204) is arranged on the second circuit board (202), and the first circuit board (201) and the second circuit board (202) are respectively arranged on two sides of the support (5).
3. An auxiliary contact assembly for a contactor as claimed in claim 2, wherein: and the two ends of the first circuit board (201) and the second circuit board (202) are correspondingly provided with a first wiring terminal (301, 301 ') and a second wiring terminal (302, 302'), and the first wiring terminal (301, 301 ') and the second wiring terminal (302, 302') are electrically connected through a first reed switch (203) and a second reed switch (204) which are correspondingly arranged.
4. An auxiliary contact assembly for a contactor as claimed in claim 1, wherein: the stroke slot (501) comprises a first idle stroke section (501 a) and a second idle stroke section (501 b) which are vertically parallel to each other, and the first idle stroke section (501 a) and the second idle stroke section (501 b) are connected through a driving section (501 c).
5. An auxiliary contact assembly for a contactor as claimed in claim 4, wherein: the driving section (501 c) is a diagonal section, and two ends of the driving section (501 c) are in arc transition connection with the first idle stroke section (501 a) and the second idle stroke section (501 b).
6. An auxiliary contact assembly for a contactor as claimed in claim 1, wherein: the inner surface of the shell (1) is positioned outside the permanent magnets (4, 4') and is provided with a magnetic shielding piece (7) for shielding the interference of an external magnetic field.
7. An auxiliary contact assembly for a contactor as claimed in claim 1, wherein: the support (5) is provided with a guide limiting protrusion (502), and the guide limiting protrusion (502) is matched with the groove (101) on the shell (1) and can move up and down along the groove (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204970.2A CN112885649B (en) | 2019-11-29 | 2019-11-29 | Auxiliary contact assembly for contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204970.2A CN112885649B (en) | 2019-11-29 | 2019-11-29 | Auxiliary contact assembly for contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112885649A CN112885649A (en) | 2021-06-01 |
| CN112885649B true CN112885649B (en) | 2024-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911204970.2A Active CN112885649B (en) | 2019-11-29 | 2019-11-29 | Auxiliary contact assembly for contactor |
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| Country | Link |
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| CN (1) | CN112885649B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211150434U (en) * | 2019-11-29 | 2020-07-31 | 上海良信电器股份有限公司 | Auxiliary contact assembly for contactor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310268C (en) * | 2004-07-14 | 2007-04-11 | 浙江正泰电器股份有限公司 | Distable overload relay operation mechanism |
| CN203312122U (en) * | 2013-06-26 | 2013-11-27 | 施耐德电气（澳大利亚）有限公司 | Button-type reset switch |
| CN106298368A (en) * | 2016-11-03 | 2017-01-04 | 浙江兆正机电有限公司 | auxiliary contact group |
| CN109192619A (en) * | 2018-10-20 | 2019-01-11 | 天水二三电器有限公司 | Contactor auxiliary contact |
| CN209388963U (en) * | 2018-10-30 | 2019-09-13 | 惠州比亚迪电子有限公司 | Relay |
| CN209729830U (en) * | 2019-06-14 | 2019-12-03 | 杭州程意电器有限公司 | A kind of D.C. contactor contact system |
-
2019
- 2019-11-29 CN CN201911204970.2A patent/CN112885649B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211150434U (en) * | 2019-11-29 | 2020-07-31 | 上海良信电器股份有限公司 | Auxiliary contact assembly for contactor |
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| CN112885649A (en) | 2021-06-01 |
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