CN203674126U - Current-limiting circuit-breaker rapid motion mechanism - Google Patents
Current-limiting circuit-breaker rapid motion mechanism Download PDFInfo
- Publication number
- CN203674126U CN203674126U CN201420005881.1U CN201420005881U CN203674126U CN 203674126 U CN203674126 U CN 203674126U CN 201420005881 U CN201420005881 U CN 201420005881U CN 203674126 U CN203674126 U CN 203674126U
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- China
- Prior art keywords
- push rod
- boss
- circuit breaker
- projection
- pedestal
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- Withdrawn - After Issue
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Abstract
The utility model discloses a current-limiting circuit-breaker rapid motion mechanism. The mechanism comprises a pedestal, a push rod, a pressure spring, a lock catch and an insulation shaft which is synchronous with a moving contact of a circuit breaker. The pedestal is fixed between two poles of the circuit breaker and a side surface is provided with three bosses which are used to limit other parts and provide support for the other parts and a limiting embossment. A lower end of the push rod is provided with a lower end embossment. Two grooves which are arranged longitudinally are arranged between an upper end of the push rod and the lower end of the push rod. A through-going shaft and the bosses pass through the grooves respectively. One end of the pressure spring is fixed to the pedestal and the other end is fixed to the push rod and continuously provides an upward force for the push rod. The lock catch sleeves the pedestal and can only carry out rotation motion. The current-limiting circuit-breaker rapid motion mechanism of the utility model is small in size and compact in cooperation and can be directly installed on a circuit breaker body. Under a large short-circuit current, the rapid motion mechanism can be instantly triggered so as to drive the plastic lock catch to trip so that time needed by short circuit motion is shortened maximumly and a capability of short circuit protection is increased.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, and in particular, the current limiting type circuit breaker with short-circuit protection function relating under the large short circuit current of current-limiting type molded case breaker is made actuating mechanism fast.
Background technology
Low-voltage circuit breaker, as low-voltage distribution system protection electrical appliance, can on-load on-off circuit, again can be in the lower automatic trip of short circuit, overload and low-voltage (decompression).At present current limiting type circuit breaker, in the time of the large short circuit current of reply, often adopts secondary facility, and triggering link, more to cause triggering required time longer, so circuit breaker need to be equipped with QA device so that in the time of large short circuit current rapid triggering mechanism.Current this device mostly is the moving protection of magnetic or pneumatic protection.
Utility model content
The problems referred to above that exist for current limiting type circuit breaker in prior art, the utility model provides a kind of current limiting type circuit breaker quick acting mechanism.
The technical solution of the utility model is as follows:
One current limiting type circuit breaker quick acting mechanism, current limiting type circuit breaker comprises the axle of through-shaft and reaction circuit breaker deciliter state, also comprises pedestal, push rod, stage clip, snap close and the shaft insulation of synchronizeing with moving contact of breaker;
Described pedestal is fixed between circuit breaker the two poles of the earth, its side is provided with the first boss, the second boss, the 3rd boss and spacing preiection spacing to other part and that provide support for other part, described the second boss be arranged at circuit breaker through-shaft under, described the 3rd boss be arranged at the second boss under, described the first boss is arranged at the below of axle, and described spacing preiection is arranged near on the side of shaft insulation;
Described push rod can move up and down, L-shaped, comprise push rod upper end and push rod lower end, push rod lower end is provided with lower end projection, between push rod upper end and push rod lower end, be provided with two groove A and the groove B(10212 of longitudinal arrangement), through-shaft and the second boss, respectively through groove A and groove B, are provided with lug at the transverse port of L shaped push rod, close the first boss place;
Described stage clip, one end is fixed on the 3rd boss of pedestal, and the other end is fixed in the lower end projection of push rod, and continues to provide power upwards to push rod;
Described snap close is set on the first boss of pedestal, can only rotatablely move, it comprises the first projection and the 3rd projection, when the normal divide-shut brake of circuit breaker, the first projection fastens the lug of push rod, and the spacing preiection on pedestal blocks snap close, and restriction snap close rotates to clockwise direction, through-shaft and the second boss lay respectively at top position in groove A and groove B, and shaft insulation is positioned at the 3rd projection top.
As further improvement of the utility model, described snap close also comprises the second projection that is arranged at the first projection top, and the second projection has elasticity.
As further improvement of the utility model, groove A and groove B on described push rod are rectangular channel, and the through-shaft restriction lower push-rod on the second boss and circuit breaker on pedestal can only move up and down.
Adopt after above technical scheme, the beneficial effect that the utility model reaches is:
This QA mechanism volume is small and exquisite, coordinates compactness, can be directly installed on breaker body, and under large short circuit current, quick acting mechanism can make circuit breaker tripping by the variation of moving contact position.Shorten greatly short circuit action required time, improved the ability of short-circuit protection.
Accompanying drawing explanation
Structural representation after the installation of Tu1Shi quick acting mechanism in current-limiting type molded case breaker;
Structural representation before the installation of Tu2Shi quick acting mechanism in current-limiting type molded case breaker;
Structural representation under Tu3Shi quick acting mechanism use state;
Fig. 4 is the structural representation of pedestal;
Fig. 5 is the structural representation of push rod;
Fig. 6 is the structural representation of snap close;
Fig. 7 is breaker open operation view;
Tu8Shi quick acting mechanism promotes snap close dropout schematic diagram while being triggered.
In figure: 1, quick actuation mechanism; 101, pedestal; 1011, the first boss; 1012, the second boss; 1013, the 3rd boss; 1014, spacing preiection; 102, push rod; 10211, groove A; 10212, groove B; 1022, lug; 1023, lower end projection; 1024, push rod upper end; 103, through-shaft; 104, stage clip; 105, axle; 106, shaft insulation; 107, snap close; 1071, the first projection; 1072, the second projection; 1073, the 3rd projection.
Embodiment
The above and other feature of the present utility model, character and advantage are by by becoming more obvious below in conjunction with the description of drawings and Examples, and in the accompanying drawings, identical Reference numeral represents identical feature all the time.
A kind of current-limiting type molded case breaker quick acting of the utility model mechanism 1 is for current-limiting type molded case breaker, shown in figure Fig. 1 and Fig. 2, its structure as shown in Figure 3:
One current limiting type circuit breaker quick acting mechanism, current limiting type circuit breaker comprises the axle 105 of through-shaft 103 and reaction circuit breaker deciliter state, also comprises pedestal 101, push rod 102, stage clip 104, snap close 107 and the shaft insulation 106 of synchronizeing with moving contact of breaker.Wherein:
Snap close 107 is set on the first boss 1011 of pedestal 101, can only rotatablely move, its structure as shown in Figure 6, comprise the first projection 1071 and the 3rd projection 1073, when the normal divide-shut brake of circuit breaker, the first projection 1071 fastens the lug 1022 of push rod 102, spacing preiection 1014 on pedestal 101 blocks snap close 107, restriction snap close 107 rotates to clockwise direction, through-shaft 103 and the second boss 1012 lay respectively at top position in groove A10211 and groove B10212, and shaft insulation 106 is positioned at the 3rd protruding 1073 tops.
As a kind of preferred structure, snap close 107 also comprises the second projection 1072 that is arranged at the first protruding 1071 tops, the second projection 1072 has certain elasticity, the second projection 1072 matches with snap close 107, make the position of snap close 107 relatively stable, guarantee snap close 107 not landings, thereby guarantee the stability of whole quick acting mechanism 1.
As a kind of preferred structure, the groove A10211 on push rod 102 and groove B10212 are rectangular channel, and the through-shaft 103 on the second boss 1012 and circuit breaker on pedestal 101 limits lower push-rod 102 and can only move up and down.
The utility model current-limiting type molded case breaker quick acting mechanical work principle is as follows, with reference to figure 7 and Fig. 8:
The cylindrical boss 1012 of pedestal coordinates the through-shaft 103 on circuit breaker to be used for together limiting the direction of push rod 102.On push rod 102, have two rectangular channels 10211 and 10212, the through-shaft 103 on pedestal cylindrical boss 1012 and circuit breaker limits lower push-rod 102 and can only move up and down.Another cylindrical boss 1011 is used for fixing snap close 107 (with reference to figure 6), and it can only be rotated.One end of stage clip 104 is fixed on conical boss 1013, and the other end is fixed on push rod lower end 1023.Spacing preiection 1014 is used for limiting snap close 107 and rotates to clockwise direction.The second projection 1072 is for there being certain flexible thin-walled, when normal divide-shut brake, the first projection 1071 of snap close 107 fastens the feature lug 1022 of push rod 102, and moving contact is while being scolded out by short circuit current, in 106 dozens of features at snap close 107 of shaft insulation the 3rd projection 1073 of synchronizeing with contact of breaker, it is rotated counterclockwise, thereby unclamp push rod 102, push rod 102 moves upward under the effect of stage clip 104, and feature lug 1022 promotes plastic lock catch and makes mechanical unlocking.The opening and closing state of circuit breaker can be reflected in the position of axle 105.
QA mechanism of the present utility model; for current-limiting type molded case breaker; this mechanism's volume is small and exquisite; coordinate compact; can be directly installed on breaker body, under large short circuit current, quick acting mechanism can immediately be triggered and promote plastic lock catch and thread off; shorten greatly short circuit action required time, improved the ability of short-circuit protection.
Above-described embodiment is available to be familiar with person in the art and to realize or use of the present utility model; those skilled in the art can be in the situation that not departing from utility model thought of the present utility model; above-described embodiment is made to various modifications or variation; because protection range of the present utility model is not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (3)
1. a current limiting type circuit breaker quick acting mechanism, current limiting type circuit breaker comprises the axle (105) of through-shaft (103) and reaction circuit breaker deciliter state, it is characterized in that: also comprise pedestal (101), push rod (102), stage clip (104), snap close (107) and the shaft insulation (106) of synchronizeing with moving contact of breaker;
Described pedestal (101) is fixed between circuit breaker the two poles of the earth, its side is provided with the first boss (1011) spacing to other part and that provide support for other part, the second boss (1012), the 3rd boss (1013) and spacing preiection (1014), described the second boss (1012) be arranged at circuit breaker through-shaft (103) under, described the 3rd boss (1013) be arranged at the second boss (1012) under, described the first boss (1011) is arranged at the below of axle (105), described spacing preiection (1014) is arranged near on the side of shaft insulation (106),
Described push rod (102) can move up and down, L-shaped, comprise push rod upper end (1024) and push rod lower end, push rod lower end is provided with lower end projection (1023), between push rod upper end (1024) and push rod lower end, be provided with two groove A(10211 of longitudinal arrangement) and groove B(10212), through-shaft (103) and the second boss (1012) are respectively through groove A(10211) and groove B(10212), locate to be provided with lug (1022) at the transverse port of L shaped push rod (102), close the first boss (1011);
Described stage clip (104), one end is fixed on the 3rd boss (1013) of pedestal (101), and the other end is fixed in the lower end projection (1023) of push rod (102), and continues to provide power upwards to push rod (102);
Described snap close (107) is set on first boss (1011) of pedestal (101), can only rotatablely move, it comprises the first projection (1071) and the 3rd projection (1073), when the normal divide-shut brake of circuit breaker, the first projection (1071) fastens the lug (1022) of push rod (102), spacing preiection (1014) on pedestal (101) blocks snap close (107), restriction snap close (107) rotates to clockwise direction, through-shaft (103) and the second boss (1012) lay respectively at groove A(10211) and groove B(10212) in top position, shaft insulation (106) is positioned at the 3rd projection (1073) top.
2. a kind of current limiting type circuit breaker quick acting according to claim 1 mechanism, is characterized in that: described snap close (107) also comprises the second projection (1072) that is arranged at the first projection (1071) top, and the second projection (1072) has elasticity.
3. a kind of current limiting type circuit breaker quick acting according to claim 1 and 2 mechanism, it is characterized in that: the groove A(10211 on described push rod (102)) and groove B(10212) be rectangular channel, through-shaft (103) the restriction lower push-rod (102) on the second boss (1012) and circuit breaker on pedestal (101) can only move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005881.1U CN203674126U (en) | 2014-01-06 | 2014-01-06 | Current-limiting circuit-breaker rapid motion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005881.1U CN203674126U (en) | 2014-01-06 | 2014-01-06 | Current-limiting circuit-breaker rapid motion mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674126U true CN203674126U (en) | 2014-06-25 |
Family
ID=50970393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420005881.1U Withdrawn - After Issue CN203674126U (en) | 2014-01-06 | 2014-01-06 | Current-limiting circuit-breaker rapid motion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745893A (en) * | 2014-01-06 | 2014-04-23 | 大全集团有限公司 | Quick action mechanism for current limiting type circuit breaker |
-
2014
- 2014-01-06 CN CN201420005881.1U patent/CN203674126U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745893A (en) * | 2014-01-06 | 2014-04-23 | 大全集团有限公司 | Quick action mechanism for current limiting type circuit breaker |
| CN103745893B (en) * | 2014-01-06 | 2015-12-09 | 大全集团有限公司 | A kind of current limiting type circuit breaker quick acting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140625 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |