CN220290746U - Shunt auxiliary contact with high rated current - Google Patents
Shunt auxiliary contact with high rated current Download PDFInfo
- Publication number
- CN220290746U CN220290746U CN202321938654.XU CN202321938654U CN220290746U CN 220290746 U CN220290746 U CN 220290746U CN 202321938654 U CN202321938654 U CN 202321938654U CN 220290746 U CN220290746 U CN 220290746U
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- Prior art keywords
- contact
- shunt
- auxiliary
- reverse
- micro switch
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- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a shunt auxiliary contact with high rated current, relates to the field of circuit breaker accessories, and solves the problem that the state of a micro switch can not be ensured to be pressed and switched by a shunt force. The electromagnetic system comprises an action piece with output action, wherein a shunt terminal and an auxiliary terminal are arranged on the shell, a movable gap is formed between the contact support and the action piece, and the contact support approaches the action piece and compresses the movable gap when the handle is closed; the micro switch comprises a reverse contact arm which extends into the movable gap so that the contact is supported to be pressed on the reverse contact arm when the handle is switched on. The micro switch is switched by utilizing the closing force, and the closing force is larger than the opening force, so that the force pressed on the reverse contact arm is larger, and the requirement of larger rated current of the micro switch can be met.
Description
Technical Field
The utility model relates to the field of accessories of circuit breakers, in particular to a shunt auxiliary contact with high rated current.
Background
In the prior art, chinese patent publication No. CN105702536B discloses an auxiliary contact, more specifically an auxiliary contact with a shunt trip, which comprises a shell, an electromagnetic system, an operating mechanism and two microswitches, wherein the electromagnetic system, the operating mechanism and the two microswitches are fixedly arranged on the shell, and the operating mechanism comprises a handle and a contact support which is arranged in a matched manner with the handle through a transmission mechanism; the micro switch comprises a contact arm, a normally closed contact and a normally open contact which are controlled by the contact arm; the shell is provided with a mechanism contact surface; the electromagnetic system and the handle respectively control the contact support to be separated from and contacted with the contact arm, and control the contact arm to switch between the normally closed contact and the normally open contact; when the contact support is separated from the contact arm, the contact support is contacted with the contact surface of the mechanism contact; when the contact support contacts the contact arm, the contact support is separated from the contact surface of the mechanism contact. When the handle is switched off, the contact supports to be pressed on the contact arm, the state of the micro switch is actually switched by the switching-off force, the micro switch of the shunt tripping coil is controlled to enable the coil to be in a disconnected state, and the coil is prevented from being burnt out due to repeated attraction. However, when the rated current of the micro switch is required to be larger, the state of the micro switch can be switched by the larger pressing force, and the switching force is smaller, so that the requirement of the pressing force cannot be met.
Disclosure of Invention
The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a shunt auxiliary contact with high rated current, which solves the problem that the state of a micro switch can not be ensured to be pressed and switched by a switching force.
The technical scheme of the utility model is as follows: the electromagnetic system comprises an action piece with output action, wherein a shunt terminal and an auxiliary terminal are arranged on the shell, a movable gap is formed between the contact support and the action piece, and the contact support approaches the action piece and compresses the movable gap when the handle is closed; the micro switch comprises a reverse contact arm which extends into the movable gap so that the contact is supported to be pressed on the reverse contact arm when the handle is switched on.
By adopting the technical scheme, the micro switch is switched by utilizing the closing force, and the closing force is larger than the opening force, so that the force pressed on the reverse contact arm is larger, and the requirement of larger rated current of the micro switch can be met.
In one possible design, the reverse contact arm includes a straight line segment and an arc segment, the arc segment is located at the outer end side of the straight line segment, and the arc segment is tilted in an arc shape towards the direction of the movable gap.
By adopting the design, the arc section is in supporting contact with the contact, and the pressing sense is softer and more uniform.
In one possible design, the microswitch has a normally closed contact, a normally open contact, and a stationary contact; when the reverse contact arm is not pressed by force, the normally closed contact is electrically connected with the static contact, and the normally open contact is not electrically connected with the static contact; when the reverse contact arm is pressed by force, the normally closed contact is not electrically connected with the static contact, and the normally open contact is electrically connected with the static contact; the normally-closed contact is connected with the shunt terminal and the auxiliary terminal respectively, the normally-open contact is connected with the shunt terminal respectively, and the stationary contact is connected with the electromagnetic system and the auxiliary terminal respectively.
By adopting the design, the reverse contact arm is in a pressed switching state, and the design is reasonable and effective.
In one possible design, a limiting block is arranged in the shell in a protruding mode, and the limiting block is located at the limit position of the opening stroke supported by the contact to be in limiting fit with the contact support.
By adopting the design, the travel of the contact support is limited, and the contact support is prevented from being separated from the preset travel.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic view of the internal structure of the micro switch of the present utility model;
1, supporting a contact; 2. a handle; 3. a micro-switch; 4. an electromagnetic system; 5. a housing; 41. an operating member; 51. a shunt terminal; 52. an auxiliary terminal; 11. a clearance gap; 31. a reverse contact arm; 311. a straight line segment; 312. an arc section; 32. a normally closed contact; 33. a normally open contact; 33. a stationary contact; 53. and a limiting block.
Detailed Description
The high rated current shunt auxiliary contact shown in fig. 1 comprises a contact support 1, a handle 2, a micro switch 3, an electromagnetic system 4 and a shell 5, wherein the electromagnetic system 4 comprises an actuating element 41 for outputting motion, the shell 5 is provided with a shunt terminal 51 and an auxiliary terminal 52, a movable gap 11 is formed between the contact support 1 and the actuating element 41, the contact support 1 approaches to the actuating element 41 and compresses the movable gap 11 when the handle 2 is closed, and the movable gap 11 is gradually reduced. The microswitch 3 comprises a counter contact arm 31, which counter contact arm 31 extends into the movable gap 11. When the handle 2 is closed, the contact holder 1 swings toward the actuator 41, and the contact holder 1 is pressed against the counter arm 31. The micro switch 3 is switched by utilizing the closing force, the closing force is larger than the opening force, so that the force pressed on the reverse contact arm 31 is larger, the requirement of larger rated current of the micro switch 3 can be met, the rated current of the micro switch 3 can be replaced by the micro switch 3 from 3A to 6A in the prior art according to experiments and actual use, and the rated current is obviously increased.
The reverse contact arm 31 comprises a straight line section 311 and an arc section 312, the straight line section 311 extends out from the shell 5 of the micro switch 3 obliquely, the arc section 312 is positioned at the outer end side of the straight line section 311, and the arc section 312 is tilted in an arc shape towards the direction of the movable gap 11. The contact support 1 presses into contact with the arcuate segment 312, the pressing process is gentle and uniform, and the pressing force required can be smaller.
As shown in fig. 1 and 2, the microswitch 3 has a normally closed contact 32, a normally open contact 33, and a stationary contact 33; when the reverse contact arm 31 is not pressed by force, the normally closed contact 32 is electrically connected with the fixed contact 33, and the normally open contact 33 is not electrically connected with the fixed contact 33; when the reverse contact arm 31 is pressed by force, the normally closed contact 32 is not electrically connected with the fixed contact 33, and the normally open contact 33 is electrically connected with the fixed contact 33; the normally closed contact 32 is respectively connected with the shunt terminal 51 and the auxiliary terminal 52 in a conducting way, the normally open contact 33 is connected with the shunt terminal 51 in a conducting way, and the static contact 33 is respectively connected with the electromagnetic system 4 and the auxiliary terminal 52 in a conducting way. During closing, the manual operation handle 2 and the matched breaker are in a normal working state, the contact support 1 presses the reverse contact arm 31, and the static contact 33 is electrically connected with the normally open contact 33. When the electromagnetic system 4 acts, the electromagnetic system 4 generates enough attraction force to enable the acting piece 41 to push the contact support 1, the contact support 1 is stressed to return to the initial position, meanwhile, the matched circuit breaker is driven to break a circuit, meanwhile, the normally open contact 33 of the micro switch 3 is disconnected with the fixed contact, the normally closed contact 32 is connected with the fixed contact, the micro switch 3 cuts off the power supply of the electromagnetic system 4, the coil of the electromagnetic system 4 is in a disconnected state, the coil is prevented from being burnt due to repeated attraction, and the auxiliary wiring terminal 52 of the micro switch 3 is fed back to the working state of a user product through an external signal lamp, a squealer or other control equipment.
The shell 5 is internally provided with a limiting block 53 in a protruding mode, and the limiting block 53 is located at the limit position of the opening stroke of the contact support 1 so as to be in limiting fit with the contact support 1. Limiting the travel of the contact support 1 and avoiding the contact support 1 from being separated from the preset travel.
Claims (4)
1. The utility model provides a shunt auxiliary contact of high rated current, is including contact support, handle, micro-gap switch, electromagnetic system and shell, electromagnetic system is including the action piece of output action, be provided with shunt terminal and auxiliary terminal on the shell, its characterized in that: a movable gap is formed between the contact support and the action piece, and the contact support approaches the action piece and compresses the movable gap when the handle is switched on; the micro switch comprises a reverse contact arm which extends into the movable gap so that the contact is supported to be pressed on the reverse contact arm when the handle is switched on.
2. The high current rating shunt auxiliary contact of claim 1, wherein: the reverse contact arm comprises a straight line section and an arc-shaped section, wherein the arc-shaped section is positioned at the outer end side of the straight line section, and the arc-shaped section is tilted in an arc shape towards the direction of the movable gap.
3. The high current rating shunt auxiliary contact of claim 1 or 2, wherein: the micro switch is provided with a normally closed contact, a normally open contact and a static contact; when the reverse contact arm is not pressed by force, the normally closed contact is electrically connected with the static contact, and the normally open contact is not electrically connected with the static contact; when the reverse contact arm is pressed by force, the normally closed contact is not electrically connected with the static contact, and the normally open contact is electrically connected with the static contact; the normally-closed contact is connected with the shunt terminal and the auxiliary terminal respectively, the normally-open contact is connected with the shunt terminal respectively, and the stationary contact is connected with the electromagnetic system and the auxiliary terminal respectively.
4. The high current rating shunt auxiliary contact of claim 1 or 2, wherein: the shell is internally provided with a limiting block in a protruding mode, and the limiting block is located at the limit position of the brake separating stroke supported by the contact to be in limiting fit with the contact support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321938654.XU CN220290746U (en) | 2023-07-21 | 2023-07-21 | Shunt auxiliary contact with high rated current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321938654.XU CN220290746U (en) | 2023-07-21 | 2023-07-21 | Shunt auxiliary contact with high rated current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220290746U true CN220290746U (en) | 2024-01-02 |
Family
ID=89329446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321938654.XU Active CN220290746U (en) | 2023-07-21 | 2023-07-21 | Shunt auxiliary contact with high rated current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220290746U (en) |
-
2023
- 2023-07-21 CN CN202321938654.XU patent/CN220290746U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |