CN108735532B - Anti-bounce buffer mechanism of low-voltage switch - Google Patents
Anti-bounce buffer mechanism of low-voltage switch Download PDFInfo
- Publication number
- CN108735532B CN108735532B CN201810654570.0A CN201810654570A CN108735532B CN 108735532 B CN108735532 B CN 108735532B CN 201810654570 A CN201810654570 A CN 201810654570A CN 108735532 B CN108735532 B CN 108735532B
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- main shaft
- mechanism main
- resistance plate
- outer side
- support
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- 230000002265 prevention Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
Abstract
The utility model provides a low tension switch's shellproof buffer gear, it includes mechanism main shaft support (1), be equipped with half slotted hole (101), its characterized in that on mechanism main shaft support (1): the anti-bouncing type mechanical spindle support is characterized in that an anti-bouncing module (3) is arranged on the inner side face of the mechanical spindle support (1), the anti-bouncing module (3) comprises a resistance plate (301), the resistance plate (301) is arranged on a support shaft (102) extending out of the inner side face of the mechanical spindle support (1), a clamping hook (301 a) is arranged on the resistance plate (301), and the clamping hook (301 a) can clamp a strut (201 a) extending out of the outer side face of an upper cantilever (201) of the mechanical spindle (2) during opening. The anti-bounce buffer mechanism has the advantages that the anti-bounce module is arranged on the side face of the bracket of the main shaft cantilever of the fixing mechanism, the buffer piece is arranged on the bracket to play a role in buffering, the anti-bounce device is combined with the bracket into a whole, the main shaft of the mechanism can be fixed and flexibly rotated, bounce of the main shaft cantilever of the switch can be effectively restrained, the installation and maintenance are convenient, and the maintenance cost is reduced.
Description
Technical Field
The invention belongs to the technical field of low-voltage switches, and particularly relates to a bounce-prevention buffer mechanism of a low-voltage switch.
Background
In the switching-on operation process of the switch, the cantilever main shaft is linked with the moving contact to rotate the moving contact towards the direction of the switch bottom plate, and in the process, a reaction spring of the operating mechanism is stretched and the spring force of the reaction spring is overcome; the movable contact is provided with a contact spring, and after the switch finishes the closing operation, the contact spring is compressed to provide the contact pressure when the switch is closed.
When the switch is opened, under the counter force action of counter force spring tension of the operating mechanism and spring pressure of the moving contact, the cantilever main shaft of the operating mechanism rotates rapidly, and the moving contact is linked to rotate in a direction away from the switch bottom plate through the connecting rod until the opening is completely in place, so that the bouncing phenomenon is serious. Aiming at the bouncing phenomenon of a switch, the current common solution is to add a bouncing prevention device, and the current common bouncing prevention device is arranged on a side plate of a mechanism, so that the space arranged on the inner side and the outer side of the mechanism is extremely narrow, and the maintenance is inconvenient; the mechanism has a complex structure, low reliability, incapability of independent disassembly, and only the function of an intermediate phase and the like.
Chinese patent 201120175827.8 discloses an anti-rebound device of a circuit breaker, which is characterized in that after the circuit breaker is disconnected, when a matching piece fixed on a locking piece is always contacted with the upper edge of a limit hole on a transmission piece, the maximum distance between the lower edge of the locking piece and a stop is between 2mm and 3 mm. The device can guarantee to have reliable rebound prevention function after a plurality of collisions, but the rebound prevention device utilizes the torsion spring to fully utilize the torsion spring to reset poor stability, and is unreliable in limit.
Disclosure of Invention
The invention aims to overcome the technical defect of poor stability of the anti-bouncing device of the existing low-voltage switch, and provides an anti-bouncing buffer mechanism of the low-voltage switch.
Technical proposal
In order to achieve the technical purpose, the invention provides a jump-prevention buffer mechanism of a low-voltage switch, which comprises a mechanism main shaft bracket, wherein the mechanism main shaft bracket is arranged on a circuit breaker base, a half slot hole is arranged on the mechanism main shaft bracket, and the mechanism main shaft penetrates through the space formed by the half slot hole and the surface of the base, and the jump-prevention buffer mechanism is characterized in that: the anti-bouncing device is characterized in that an anti-bouncing module is arranged on the inner side face of the mechanism main shaft support, the anti-bouncing module comprises a resistance plate, the resistance plate is arranged on a supporting shaft extending out of the inner side face of the mechanism main shaft support, a clamping hook is arranged on the resistance plate, the clamping hook can clamp a support column extending out of the outer side face of a cantilever on the mechanism main shaft when the mechanism main shaft is separated from the brake, a convex column is arranged on the outer side face of the resistance plate, and a torsion spring is arranged on the convex column and provides clamping force for the resistance plate.
Further, the limiting shaft is arranged on the inner side surface of the mechanism main shaft support and located on the outer side of the resistance plate, and the resistance plate can be limited to rotate outwards.
Further, an elastic buffer piece I is arranged on the outer side face of the mechanism main shaft support, a through hole groove corresponding to the mechanism main shaft is formed in the elastic buffer piece I, and a step or/and an arc is arranged on the inner wall of the through hole groove and can be contacted with the mechanism main shaft to increase resistance and prevent rebound when the breaker is opened.
Furthermore, the upper end of the inner side surface of the mechanism main shaft bracket is also provided with a second elastic buffer piece, and a cantilever of the mechanism main shaft is provided with a stop lever which can be contacted with the second elastic buffer piece when the breaker is disconnected to prevent the mechanism main shaft from rebounding.
Further, the elastic buffer member is locked on the outer side surface of the mechanism main shaft bracket by a screw or stuck on the outer side surface of the mechanism main shaft bracket.
Advantageous effects
According to the anti-bounce buffer mechanism of the low-voltage switch, the anti-bounce module is arranged on the side face of the bracket for fixing the main shaft cantilever of the mechanism, the buffer piece is arranged on the bracket to play a role of buffering, the anti-bounce device and the bracket are combined into a whole, the main shaft of the mechanism can be fixed and flexibly rotated, bounce of the main shaft cantilever of the switch can be effectively restrained, the installation and maintenance are convenient, and the maintenance cost is reduced.
Drawings
FIG. 1 is an exploded view of example 1 of the present invention;
FIG. 2 is a schematic view showing the structure of the elastic buffer I in embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of the opening of embodiment 1 of the present invention;
fig. 4 is a schematic closing diagram of embodiment 1 of the present invention;
FIG. 5 is an exploded view of embodiment 2 of the present invention;
FIG. 6 is a schematic structural diagram of a second elastic buffer member in embodiment 2 of the present invention;
FIG. 7 is a schematic diagram of the opening of embodiment 2 of the present invention;
fig. 8 is a schematic closing diagram of embodiment 2 of the present invention;
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 3, a jump-proof buffer mechanism of a low-voltage switch comprises a mechanism main shaft support 1, wherein the upper end and the lower end of the mechanism main shaft support 1 are locked on a breaker base A by screws, a half slot hole 101 is formed in the mechanism main shaft support 1, a mechanism main shaft 2 passes through the half slot hole 101 and is positioned in a space formed by the half slot hole 101 and the surface of the base A, a jump-proof module 3 is arranged on the inner side surface of the mechanism main shaft support 1, the jump-proof module 3 comprises a resistance plate 301, the resistance plate 301 is arranged on a supporting shaft 102 extending out of the inner side surface of the mechanism main shaft support 1, a clamping hook 301a is arranged on the resistance plate 301, a convex column 301b is arranged on the outer side surface of the resistance plate 301, a torsion spring 302 is arranged on the convex column 301b, and the torsion spring 302 provides clamping force for the resistance plate 301.
The outer side surface of the mechanism main shaft support 1 is provided with an elastic buffer piece I4, in this embodiment, the elastic buffer piece I4 is made of rubber, and the elastic buffer piece I4 is locked on the outer side surface of the mechanism main shaft support 1 or stuck on the outer side surface of the mechanism main shaft support 1 by using a screw.
As shown in fig. 2, the first elastic buffer member 4 is provided with a via hole slot 401 corresponding to the main shaft 2 of the mechanism, and the inner wall of the via hole slot 401 is provided with a step 401a or/and an arc 401b.
As shown in fig. 3, when the breaker is opened, the step 401a or/and the arc 401b on the first elastic buffer member 4 contacts with the main shaft 2 of the mechanism to generate friction force, so as to absorb the excessive energy generated in the opening and closing process and form resistance, thereby effectively reducing bouncing. The clamping hook 301a can clamp a strut 201a extending from the outer side surface of the cantilever 201 on the main shaft 2 of the mechanism during opening.
As shown in fig. 4, when the circuit breaker is opened, the clamping hook 301a is separated from the pillar 201a extending from the outer side surface of the cantilever 201 on the main shaft 2, and the inner side surface of the main shaft bracket 1 is located outside the resistance plate 301, and the limit shaft 103 is arranged to limit the outward rotation of the resistance plate 301.
Example 2
As shown in fig. 5,6 and 8, the present invention further provides an embodiment, wherein the upper end of the inner side surface of the main shaft support 1 of the mechanism is further provided with a second elastic buffer member 5, and the cantilever 201 of the main shaft 2 of the mechanism is provided with a stop rod 201b.
As shown in fig. 7, when the circuit breaker is opened, the stop rod 201b contacts with the surface of the second elastic buffer member 5 to absorb the excessive energy generated in the opening process, so as to form resistance, thereby effectively reducing bouncing.
According to the anti-bounce buffer mechanism of the low-voltage switch, the anti-bounce module is arranged on the side face of the bracket for fixing the main shaft cantilever of the mechanism, the buffer piece is arranged on the bracket to play a role of buffering, the anti-bounce device and the bracket are combined into a whole, the main shaft of the mechanism can be fixed and flexibly rotated, bounce of the main shaft cantilever of the switch can be effectively restrained, the installation and maintenance are convenient, and the maintenance cost is reduced.
The structures, proportions, sizes, amounts, etc. shown in the drawings of the embodiments of the present invention are for illustration and description only, and should not be construed as limiting the invention, so that any structural modifications, proportional changes, or adjustments of size may fall within the scope of the invention without affecting the efficacy and achievement of the invention. 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 (3)
1. The utility model provides a low tension switch's shellproof buffer gear, it includes mechanism main shaft support (1), mechanism main shaft support (1) dress is on circuit breaker base (A), be equipped with half slotted hole (101) on mechanism main shaft support (1), mechanism main shaft (2) pass half slotted hole (101) are located half slotted hole (101) and the space that base (A) surface formed, its characterized in that: the anti-bouncing device comprises a mechanism main shaft support (1), wherein an anti-bouncing module (3) is arranged on the inner side surface of the mechanism main shaft support (1), the anti-bouncing module (3) comprises a resistance plate (301), the resistance plate (301) is arranged on a support shaft (102) extending out of the inner side surface of the mechanism main shaft support (1), a clamping hook (301 a) is arranged on the resistance plate (301), the clamping hook (301 a) can clamp a strut (201 a) extending out of the outer side surface of a cantilever (201) on the mechanism main shaft (2) during opening, a convex column (301 b) is arranged on the outer side surface of the resistance plate (301), a torsion spring (302) is arranged on the convex column (301 b), and the torsion spring (302) provides clamping force for the resistance plate (301);
a limiting shaft (103) is arranged on the inner side surface of the mechanism main shaft bracket (1) and positioned on the outer side of the resistance plate (301) so as to limit the resistance plate (301) to rotate outwards;
an elastic buffer piece I (4) is arranged on the outer side face of the mechanism main shaft support (1), a through hole groove (401) corresponding to the mechanism main shaft (2) is formed in the elastic buffer piece I (4), and a step (401 a) or/and an arc (401 b) are formed in the inner wall of the through hole groove (401) and can be contacted with the mechanism main shaft (2) when the breaker is opened, so that the resilience of the breaker is prevented.
2. A bounce prevention buffer mechanism for a low voltage switch of claim 1, wherein: the upper end of the inner side surface of the mechanism main shaft bracket (1) is also provided with a second elastic buffer piece (5), and a cantilever (201) of the mechanism main shaft (2) is provided with a stop lever (201 b) which can be contacted with the second elastic buffer piece (5) to prevent the mechanism main shaft (2) from rebounding when the breaker is opened.
3. A bounce prevention buffer mechanism for a low voltage switch of claim 1, wherein: the elastic buffer piece I (4) is locked on the outer side surface of the mechanism main shaft bracket (1) by a screw or is stuck on the outer side surface of the mechanism main shaft bracket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654570.0A CN108735532B (en) | 2018-06-22 | 2018-06-22 | Anti-bounce buffer mechanism of low-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654570.0A CN108735532B (en) | 2018-06-22 | 2018-06-22 | Anti-bounce buffer mechanism of low-voltage switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108735532A CN108735532A (en) | 2018-11-02 |
| CN108735532B true CN108735532B (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810654570.0A Active CN108735532B (en) | 2018-06-22 | 2018-06-22 | Anti-bounce buffer mechanism of low-voltage switch |
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| Country | Link |
|---|---|
| CN (1) | CN108735532B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB824561A (en) * | 1954-09-27 | 1959-12-02 | Aron Electricity Meter Ltd | Improvements in or relating to toggle mechanisms |
| CN102054631A (en) * | 2011-01-19 | 2011-05-11 | 西安交通大学 | Anti-bouncer for circuit breaker |
| CN201985050U (en) * | 2011-01-19 | 2011-09-21 | 西安交通大学 | Bounce-proof device of circuit breaker |
| CN105097317A (en) * | 2015-08-27 | 2015-11-25 | 德力西电气有限公司 | Circuit breaker having novel rapid closing function |
| EP2947674A1 (en) * | 2014-05-23 | 2015-11-25 | Nela, Razvojni Center Za Elektoindustrijo In Elektroniko D.O.O. | Mechanism for speed-independent closing of contacts |
| CN105719857A (en) * | 2016-04-21 | 2016-06-29 | 环宇集团浙江高科有限公司 | Anti-bounce apparatus of automatic transfer switching equipment |
-
2018
- 2018-06-22 CN CN201810654570.0A patent/CN108735532B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB824561A (en) * | 1954-09-27 | 1959-12-02 | Aron Electricity Meter Ltd | Improvements in or relating to toggle mechanisms |
| CN102054631A (en) * | 2011-01-19 | 2011-05-11 | 西安交通大学 | Anti-bouncer for circuit breaker |
| CN201985050U (en) * | 2011-01-19 | 2011-09-21 | 西安交通大学 | Bounce-proof device of circuit breaker |
| EP2947674A1 (en) * | 2014-05-23 | 2015-11-25 | Nela, Razvojni Center Za Elektoindustrijo In Elektroniko D.O.O. | Mechanism for speed-independent closing of contacts |
| CN105097317A (en) * | 2015-08-27 | 2015-11-25 | 德力西电气有限公司 | Circuit breaker having novel rapid closing function |
| CN105719857A (en) * | 2016-04-21 | 2016-06-29 | 环宇集团浙江高科有限公司 | Anti-bounce apparatus of automatic transfer switching equipment |
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| Publication number | Publication date |
|---|---|
| CN108735532A (en) | 2018-11-02 |
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