CN220873508U - Contact system - Google Patents
Contact system Download PDFInfo
- Publication number
- CN220873508U CN220873508U CN202322610130.4U CN202322610130U CN220873508U CN 220873508 U CN220873508 U CN 220873508U CN 202322610130 U CN202322610130 U CN 202322610130U CN 220873508 U CN220873508 U CN 220873508U
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- Prior art keywords
- contact
- pressing plate
- pressure spring
- pin
- rotating shaft
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- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 40
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model provides a contact system, its comprises pivot, moving contact, mounting pin, clamp plate pin, contact support, depression bar and contact pressure spring, be equipped with the contact chamber in the pivot, the moving contact is rotatable to be set up through the mounting pin the contact intracavity, just the moving contact front end passes the pivot setting, the contact support sets up in the moving contact both sides, is used for supporting pivot and mounting pin, the clamp plate passes through the clamp plate pin setting in the downside in contact chamber, just be equipped with the contact pressure spring between clamp plate and the pivot, the rear end of moving contact is equipped with the depression bar that offsets with the clamp plate cooperation, the both sides in contact chamber are equipped with the guiding hole, the clamp plate pin is movable to be set up in this guiding hole. The advantages of the two contact system installation modes (slow-assembly type and fast-assembly type) in the current industry are combined, the requirements of fast assembly are met, the production efficiency is improved, the number of parts is reduced, the material cost is reduced, and when high current is generated, the moving knife is separated and turned over to be locked and self-sustaining, so that the breaking capacity can be effectively improved.
Description
Technical Field
The utility model relates in particular to a contact system.
Background
The moulded case circuit breaker is a kind of protective device for circuit of voltage, possessing overload, short circuit and undervoltage protection functions. Circuit breakers are of a wide variety, with molded case circuit breakers being relatively common, and the housing employs a plastic insulator for isolating the metal parts from the conductors and from ground. When the current exceeds a set value, the molded case circuit breaker can automatically cut off the current, and plays a role in protecting the load. The single break point of the molded case circuit breaker is the most used form of the current molded case circuit breaker products, and the contact module part is very much paid attention as an important component part of the molded case circuit breaker, wherein the reliability and good assemblability of the connecting device of the moving contact are more and more paid attention.
Contact systems are currently divided into two types, one of which is a fast-assembling type and one of which is a slow-assembling type.
The contact system of the slow-assembling type needs to fix the moving contact mounting pin in the opening groove of the rotating shaft through the clamp spring, wherein the opening groove is arranged towards the moving contact loading direction, so that the moving contact needs to be fixed by the clamp spring and the check ring, and the whole mounting procedure is slower due to the fact that the clamp spring and the check ring are more, and a special mounting clamp is needed to assemble the moving contact, so that the efficiency is low.
Compared with a slow-assembly contact system, the quick-assembly contact system omits a clamp spring and a retainer ring, and sets the opening slot direction to be perpendicular to the moving contact loading direction, but compared with the slow-assembly contact system, the clamp plate needs to be assembled with the moving contact, when the moving contact is used for loading, the moving contact is directly pressed on a rotating shaft by a contact pressure spring, as disclosed in Chinese patent CN 210575797U, the clamp plate is directly fixed on the moving contact through a clamp plate shaft, and in this way, the efficiency is improved, but because a moving knife shaft cannot slide in a clamp plate groove, the moving knife cannot be repelled in advance due to electric repulsive force when the moving knife is disconnected, and the influence of breaking capacity is large.
Disclosure of utility model
In view of the shortcomings of the prior art, it is an object of the present utility model to provide a contact system.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a contact system, its comprises pivot, moving contact, mounting pin, clamp plate pin, contact support, depression bar and contact pressure spring, be equipped with the contact chamber in the pivot, the moving contact is rotatable to be set up through the mounting pin the contact intracavity, just the moving contact front end passes the pivot setting, the contact support sets up in the moving contact both sides, is used for supporting pivot and mounting pin, the clamp plate passes through the clamp plate pin setting in the downside in contact chamber, just be equipped with the contact pressure spring between clamp plate and the pivot, the rear end of moving contact is equipped with the depression bar that offsets with the clamp plate cooperation, the both sides in contact chamber are equipped with the guiding hole, the clamp plate pin is movable to be set up in this guiding hole.
One side of the pressing plate, which is close to the moving contact, is provided with a pressing plate lower arm which is obliquely arranged.
Open slots are formed in two sides of the contact cavity, and the mounting pins are rotatably mounted in the open slots.
The opening direction of the opening groove is perpendicular to the axis of the movable contact.
The rotating shaft is internally provided with a contact pressure spring positioning hole, the pressing plate is provided with a positioning convex point corresponding to the pressure spring positioning hole, and two ends of the contact pressure spring are respectively limited by the pressure spring positioning hole and the positioning convex point.
And a positioning column is arranged in the pressure spring positioning hole.
The number of the movable contacts is two, and the movable contacts are arranged side by side.
The number of the pressing plates is two, and the pressing plates are arranged corresponding to the moving contacts.
The rotating shaft is provided with a guide groove between the two guide holes.
The upper side of the movable contact, which is close to the installation position of the installation pin, is provided with a protrusion extending upwards, and the protrusion and the inner wall of the rotating shaft form the limit of the turnover maximum position of the movable contact
The utility model has the beneficial effects that: the advantages of the two contact system installation modes (slow-assembly type and fast-assembly type) in the current industry are combined, the requirements of fast assembly are met, the production efficiency is improved, the number of parts is reduced, the material cost is reduced, and when high current is generated, the moving knife is separated and turned over to be locked and self-sustaining, so that the breaking capacity can be effectively improved.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.
Fig. 2 is a schematic cross-sectional view 1 of example 1 of the present utility model.
Fig. 3 is a schematic cross-sectional view of example 1 of the present utility model, 2.
Fig. 4 is a schematic structural view of embodiment 2 of the present utility model.
Fig. 5 is a schematic view of a partial structure of the rotating shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in the figure, the utility model discloses a contact system, which consists of a rotating shaft 1, a moving contact 2, a mounting pin 8, a pressing plate 4, a pressing plate pin 3, a contact support 7, a pressing rod 6 and a contact pressure spring 5, wherein a contact cavity 11 is arranged in the rotating shaft, namely, a notch is arranged at the front end of the rotating shaft and communicated with the contact cavity, an opening at the rear end of the rotating shaft is convenient for loading the moving contact and is exposed from the notch, so that the assembled moving contact can be matched with a fixed contact, the moving contact is rotatably arranged in the contact cavity through the mounting pin, the front end of the moving contact passes through the rotating shaft, the contact support is arranged on two sides of the moving contact and is used for supporting the rotating shaft and the mounting pin, the pressing plate is arranged on the lower side of the contact cavity through the pressing plate pin, the pressing plate is preferably arranged between the pressing plate and the rotating shaft, the pressing plate angle is 140-150 DEG, the rear end of the moving contact is provided with a pressing rod which is matched with the pressing plate, two sides of the contact cavity are provided with guide holes 12, and the pressing plate pin can be movably arranged in the guide holes, and the guide holes are long strip-shaped, so that the pressing plate pin can move in the guide holes relatively.
One side of the pressing plate, which is close to the moving contact, is provided with a pressing plate lower arm 41 which is obliquely arranged, and the pressing rod is utilized to move along the pressing plate lower arm in the rotating process of the moving contact, so that a pressing plate pin of the pressing plate moves in a guide hole to achieve the effect of locking and self-holding, and the moving contact is lifted to enter the locking and self-holding state before the mechanism is unlocked under the electric repulsive force, and the electric arc is cut by utilizing a grid plate in advance, so that the electric arc voltage is improved.
The both sides in contact chamber are equipped with open slot 16, the mounting pin is rotatable to be installed in this open slot, the axis setting of the perpendicular moving contact of open slot's opening direction, notch level is slightly down, and the moving contact atress is upwards perpendicularly after the pressure equipment is gone into, can not deviate from, and can realize the effect of fast-assembling.
The contact pressure spring positioning 14 is arranged in the rotating shaft, the pressing plate is provided with positioning protruding points corresponding to the pressure spring positioning holes, two ends of the contact pressure spring are limited by the pressure spring positioning holes and the positioning protruding points respectively, the contact pressure spring is fixed by the pressure spring positioning holes and the positioning protruding points, the reliability of the position of the contact pressure spring can be guaranteed when the pressing plate moves, the design of the pressure spring positioning holes further reduces the complexity of installation of the pressing plate, and production efficiency is improved.
And a positioning column 15 is arranged in the pressure spring positioning hole to further limit the contact pressure spring.
Example 1
The movable contact is one and is arranged corresponding to one pressing plate.
Example 2
The two movable contacts are arranged side by side, and the double-blade quick-mounting self-supporting double-blade is realized, the double-pressing plate is preferred, and the double-blade stability is stronger. In the double-cutter scheme, the left and right sides of the moving cutter rivet are provided with avoidance structures, the two sides of the moving cutter rivet are provided with stepped shafts, the two stepped shaft caps are in contact with each other, and meanwhile, the shafts in the middle parts of the two moving cutters are in contact with each other, so that left and right stress balance is provided.
The pivot is equipped with guide slot 13 between two guiding holes, and the presser pin is perforated smoothly along the guide slot, reduces the installation degree of difficulty.
The upper side of the installation position of the moving contact close to the installation pin is provided with a protrusion 21 extending upwards, the protrusion and the inner wall of the rotating shaft form the limit of the turning maximum position of the moving contact, when the moving contact rotates, the protrusion and the inner wall of the rotating shaft (namely the position contacted when the moving contact turns) form limit fit, and the adjustment of the turning maximum angle of the moving contact can be realized by adjusting the size of the protrusion.
Meanwhile, an avoidance port 22 is formed in the position, matched with the circuit breaker frame, of the front end of the moving contact, so that interference with the frame when the moving contact is repelled is avoided.
The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.
Claims (10)
1. A contact system, characterized by: the movable contact is rotatably arranged in the contact cavity through the mounting pin, the front end of the movable contact penetrates through the rotating shaft to be arranged on two sides of the movable contact and is used for supporting the rotating shaft and the mounting pin, the pressing plate is arranged on the lower side of the contact cavity through the pressing plate pin, the pressing spring is arranged between the pressing plate and the rotating shaft, the pressing rod matched with the pressing plate and propped against is arranged at the rear end of the movable contact, guide holes are formed in two sides of the contact cavity, and the pressing plate pin is movably arranged in the guide holes.
2. A contact system according to claim 1, wherein: one side of the pressing plate, which is close to the moving contact, is provided with a pressing plate lower arm which is obliquely arranged.
3. A contact system according to claim 1, wherein: open slots are formed in two sides of the contact cavity, and the mounting pins are rotatably mounted in the open slots.
4. A contact system according to claim 3, wherein: the opening direction of the opening groove is perpendicular to the axis of the movable contact.
5. A contact system according to claim 1, wherein: the rotating shaft is internally provided with a contact pressure spring positioning hole, the pressing plate is provided with a positioning convex point corresponding to the pressure spring positioning hole, and two ends of the contact pressure spring are respectively limited by the pressure spring positioning hole and the positioning convex point.
6. A contact system according to claim 5, wherein: and a positioning column is arranged in the pressure spring positioning hole.
7. A contact system according to claim 1, wherein: the number of the movable contacts is two, and the movable contacts are arranged side by side.
8. A contact system according to claim 7, wherein: the number of the pressing plates is two, and the pressing plates are arranged corresponding to the moving contacts.
9. A contact system according to claim 1, wherein: the rotating shaft is provided with a guide groove between the two guide holes.
10. A contact system according to claim 1, wherein: the upper side of the movable contact, which is close to the installation position of the installation pin, is provided with a protrusion extending upwards, and the protrusion and the inner wall of the rotating shaft form the limit of the turning maximum position of the movable contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610130.4U CN220873508U (en) | 2023-09-26 | 2023-09-26 | Contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610130.4U CN220873508U (en) | 2023-09-26 | 2023-09-26 | Contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220873508U true CN220873508U (en) | 2024-04-30 |
Family
ID=90821557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322610130.4U Active CN220873508U (en) | 2023-09-26 | 2023-09-26 | Contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220873508U (en) |
-
2023
- 2023-09-26 CN CN202322610130.4U patent/CN220873508U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |