CN110416008B - Safety lock and circuit breaker - Google Patents
Safety lock and circuit breaker Download PDFInfo
- Publication number
- CN110416008B CN110416008B CN201910846476.XA CN201910846476A CN110416008B CN 110416008 B CN110416008 B CN 110416008B CN 201910846476 A CN201910846476 A CN 201910846476A CN 110416008 B CN110416008 B CN 110416008B
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- Prior art keywords
- lock
- lock body
- limiting
- safety
- hole
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1054—Means for avoiding unauthorised release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Emergency Lowering Means (AREA)
- Breakers (AREA)
Abstract
The invention relates to the technical field of parts of an operation or release mechanism, in particular to a safety lock and a circuit breaker. The safety lock is used for locking the position of the handle and is positioned on one side of the handle, which has a moving trend, the handle is arranged on the shell in a penetrating way, and the safety lock comprises a first lock body, a second lock body, a limiting piece and a locking piece, wherein one end of the first lock body is provided with a first lock rod which stretches into a lock hole of the shell, the second lock body is movably connected with the first lock body, the limiting piece is connected with the first lock body and the second lock body, the relative position between the first lock body and the second lock body is fixed, and the locking piece is fixedly connected with the limiting piece and the first lock body or fixedly connected with the limiting piece and the second lock body. The safety lock has the advantages of safety, reliability, simple structure, small volume, low cost and easy installation.
Description
Technical Field
The invention relates to the technical field of parts of an operation or release mechanism, in particular to a safety lock and a circuit breaker.
Background
A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. The safety lock of the circuit breaker is an electrical protection tool, the circuit breaker is required to be kept in a certain state when the circuit breaker equipment is overhauled or maintained, and in order to prevent misoperation, the safety lock is generally adopted to block the handle action of the circuit breaker so as to prevent danger caused by misoperation.
The traditional breaker safety lock is complex in structure and complex in assembly mode, the safety lock is required to be fixed by connecting bolts of the breaker cover and the base, the cost is high, and the safety lock occupies the inner space of the cavity of the breaker to influence the installation of accessories in the breaker.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of complex structure and high cost of the safety lock of the circuit breaker in the prior art, so as to provide the safety lock which has the advantages of simple and reliable structure, small volume, low cost and easy installation and the circuit breaker provided with the safety lock.
The safety lock is used for locking the position of the handle, is positioned on one side of the handle, which has a moving trend, and is penetrated on the shell, and comprises a first lock body, a second lock body, a limiting piece and a locking piece, wherein one end of the first lock body is provided with a first lock rod which stretches into a lock hole of the shell, the second lock body is movably connected with the first lock body, the limiting piece is connected with the first lock body and the second lock body, the relative position between the first lock body and the second lock body is fixed, and the locking piece is fixedly connected with the limiting piece and the first lock body or fixedly connected with the limiting piece and the second lock body.
The second lock body is provided with a first hole, the other end of the first lock body is a penetrating end penetrating through the first hole, the limiting piece is sleeved on the second lock body, and the limiting end of the limiting piece, which faces the first lock body, is spliced with the first lock body.
The penetrating end is provided with a positioning groove for the insertion of the limiting end, and the width of the positioning groove is matched with the wall thickness of the limiting end.
The limiting piece is of a cylindrical structure, is sleeved outside the second lock body, and is provided with two positioning grooves for inserting the two side walls of the limiting end.
The first lock body is Z-shaped, the penetrating end is an upper transverse part, and the first lock rod is a lower transverse part.
The direction of the first lock rod inserted into the lock hole is perpendicular to or coincides with the moving direction of the handle.
The side of the second lock body, which is far away from the first lock rod, is provided with a second lock rod, the second lock rod is suitable for being inserted into the other lock hole of the shell, and the straight line where the first lock rod and the second lock rod are located is perpendicular to the moving direction of the handle.
The first lock rod and the second lock rod have the same structure, and the lower hole wall of the first hole of the second lock body and the upper surface of the second lock rod are in the same plane.
The upper end lateral wall of the second lock body is provided with a buckle, the limiting piece is provided with a moving groove for the buckle to move, and a limiting part which is positioned at the lower end of the moving groove and used for preventing the buckle from moving out of the moving groove, and the buckle can penetrate through the limiting part and enter the moving groove.
The lock further comprises a biasing member arranged between the upper end of the second lock body and the top wall of the limiting member, and the biasing member provides biasing force for the limiting member far away from the second lock body.
The top of the groove wall of the positioning groove of the first lock rod far away from the penetrating end is higher than the upper surface of the penetrating end by a set distance, and when the second lock body and the limiting piece are in the sleeved position, the bottom of the limiting end is higher than the upper surface of the penetrating end and lower than the top of the groove wall of the positioning groove of the first lock rod.
The second lock body and the limiting piece are provided with a padlock hole, and when the second lock body and the padlock hole on the limiting piece are in a locking position, the padlock hole on the second lock body and the padlock hole on the limiting piece are overlapped and can be locked by the locking piece.
The circuit breaker comprises the safety lock, the handle and the shell, wherein the shell is provided with the moving cavity for the handle to penetrate and move, the cavity wall of the moving cavity is provided with the lock hole, and the first lock rod of the safety lock stretches into the lock hole.
The technical scheme of the invention has the following advantages:
1. The safety lock is used for locking the position of a handle, is positioned on one side of the handle, which has a moving trend, and penetrates through a shell, and comprises a first lock body, a second lock body, a limiting piece and a locking piece, wherein one end of the first lock body is provided with a first lock rod which stretches into a lock hole of the shell, the second lock body is movably connected with the first lock body, the limiting piece is connected with the first lock body and the second lock body, the relative position between the first lock body and the second lock body is fixed, and the locking piece is fixedly connected with the limiting piece and the first lock body or fixedly connected with the limiting piece and the second lock body. The safety lock comprises a first lock body, a second lock body, a limiting piece, a first lock rod, a second lock body, a first lock body and a second lock body, wherein the first lock body and the second lock body are arranged in a lock hole, the first lock body and the second lock body are arranged in the lock hole, the limiting piece is arranged in the lock hole, the first lock body is connected with the second lock body, the second lock body is connected with the first lock body, the second lock body is connected with the limiting piece, the limiting piece is connected with the second lock body, and the first lock body is connected with the second lock body.
2. The safety lock and the positioning groove can ensure the firmness of the plugging of the limiting piece and the first lock body, so that the safety lock is safer and more reliable
3. The safety lock is provided with the first lock rod and the second lock rod, the straight line where the first lock rod and the second lock rod are located is perpendicular to the moving direction of the handle, when the safety lock is installed, the space in the moving direction of the handle is not occupied, the touch to the handle is reduced, misoperation on the handle can be reduced, the safety lock is safer, the safety lock is not limited by the handle when installed, and the safety lock is more convenient to install.
4. According to the safety lock disclosed by the invention, the buckle on the second lock body and the limiting part on the limiting part are arranged, so that the second lock body and the limiting part can be prevented from being freely separated, the second lock body or the limiting part can be prevented from being lost, and the safety lock can be assembled before being installed on the shell, so that the safety lock is convenient to install.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the safety lock of the present invention in use;
FIG. 2 is a schematic view of a first lock body according to the present invention;
FIG. 3 is a schematic view of a second lock body according to the present invention;
FIG. 4 is a schematic view of a limiting member according to the present invention;
FIG. 5 is a schematic view of the stopper shown in FIG. 4 at another angle;
FIG. 6 is a schematic diagram of a first step of installing the security lock of the present invention;
FIG. 7 is a second schematic diagram of the installation step of the security lock of the present invention;
FIG. 8 is a third schematic view of the installation step of the security lock of the present invention;
Reference numerals illustrate:
1-first lock body, 11-first lock rod, 12-penetrating end, 13-positioning groove, 14-lock hook, 2-second lock body, 21-first hole, 22-second lock rod, 23-buckle, 24-mounting post, 25-hanging lock hole, 3-limit piece, 31-mounting cavity, 32-limit end, 33-moving groove, 34-limit part, 35-anti-slip convex edge, 4-lock piece, 5-bias piece, 6-shell and 7-handle.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Embodiment one:
The safety lock of this embodiment is used for locking the position of the handle 7, as shown in fig. 1-8, and is located on one side of the handle 7 with a moving trend, the handle 7 is arranged on the housing 6 in a penetrating manner, two lock holes are arranged on the housing 6, and the connecting line of the two lock holes is perpendicular to the moving direction of the handle 7. The safety lock comprises a first lock body 1, a second lock body 2, a limiting piece 3, a locking piece 4 and a biasing piece 5.
As shown in fig. 1, one end of the first lock body 1 is a first lock rod 11 extending into the lock hole of the housing 6, the other end is a penetrating end 12, the first lock body 1 is Z-shaped, the penetrating end 12 is an upper transverse portion, and the first lock rod 11 is a lower transverse portion. The penetrating end 12 is provided with two positioning grooves 13, and the top end of the penetrating end 12 far away from the groove wall of the positioning groove 13 of the first lock rod 11 is higher than the upper surface of the penetrating end 12 by a set distance. The end of the first lock lever 11 is provided with a lock hook 14 formed by downwards sinking the upper surface of the first lock lever 11, the lock hook 14 is matched with the size of the lock hole, the lock hook 14 is inserted into the lock hole, and the step surface between one end of the first lock lever 11 far away from the lock hook 14 and the lock hook 14 can limit the position of the lock hook 14, so that the position of the safety lock after locking is more stable.
As shown in fig. 2, the second lock body 2 is movably connected with the first lock body 1, a first hole 21 through which the penetrating end 12 is penetrated and moved is provided on the second lock body 2, a second lock rod 22 is provided on a side of the second lock body 2 away from the first lock rod 11, the second lock rod 22 and the first lock rod 11 have the same structure, the second lock rod 22 is also inserted into another lock hole on the housing 6, and a straight line where the first lock rod 11 and the second lock rod 22 are located is perpendicular to the moving direction of the handle 7. In order to facilitate the insertion of the penetrating end 12 and to stabilize the structure, the lower hole wall of the first hole 21 is in the same plane as the upper surface of the second lock lever 22.
As shown in fig. 3 and 4, the limiting member 3 has a cylindrical structure, and has a mounting cavity 31 for accommodating the second lock body 2 and a limiting end 32 facing the first lock body 1 and inserted into the first lock body 1. The limiting piece 3 is sleeved outside the second lock body 2, and when the limiting end 32 is inserted into the positioning groove 13, the relative position between the first lock body 1 and the second lock body 2 is fixed. In this embodiment, two side walls of the limiting end 32 are inserted into corresponding positioning grooves 13, and the width of the positioning groove 13 is adapted to the wall thickness of the limiting end 32. In order to facilitate the pressing of the limiting member 3, an anti-slip rib 35 is provided at the top end of the limiting member 3.
In order to make the safety lock more convenient to use, the safety lock is assembled before the handle 7 is locked, and the first lock lever 11 and the second lock lever 22 of the safety lock are inserted into the corresponding lock holes. For facilitating the assembly and use of the safety lock, a buckle 23 is arranged on the side wall of the upper end of the second lock body 2, a moving groove 33 for the buckle 23 to move is arranged on the limiting piece 3, a limiting part 34 for preventing the buckle 23 from moving out of the moving groove 33 is arranged at the lower end of the limiting piece 3, which is positioned at the moving groove 33, and the buckle 23 can pass through the limiting part 34 and enter the moving groove 33. The limiting member 3 is provided behind the second locking lever 22, and the limiting member 3 and the second locking lever 22 can be moved to each other but cannot be separated from each other. In this embodiment, the limiting portion 34 is an upper end of the limiting end 32.
Referring to fig. 7, a biasing member 5 is disposed between the upper end of the second lock body 2 and the top wall of the limiting member 3, and the biasing member 5 provides a biasing force to the limiting member 3 away from the second lock body 2. In this embodiment, the biasing member 5 is a compression spring, and a spring mounting post 24 is provided at the upper end of the second lock body 2. Meanwhile, when the second lock body 2 and the limiting member 3 are in the sleeved position, the bottom of the limiting end 32 is higher than the upper surface of the penetrating end 12 and lower than the top end of the groove wall of the positioning groove 13 far away from the first lock rod 11, and the positioning groove can facilitate the movement of the first lock body 1, and meanwhile, the limiting member 3 can prevent the first lock body 1 from being separated from the second lock body 2.
Referring to fig. 8, the locking member 4 is configured to fixedly connect the limiting member 3 and the second lock body 2, where padlock holes 25 are formed in the second lock body 2 and the limiting member 3, and when the locking member is in a locked position, the second lock body 2 and the padlock holes 25 on the limiting member 3 overlap, and the locking member 4 passes through the padlock holes 25 to lock the second lock body 2 and the limiting member 3. In this embodiment, the locking member 4 is a padlock, and the padlock hole 25 is a rectangular hole.
The installation process of the safety lock is that, as shown in fig. 6 and 7, the penetrating end 12 is inserted into the first hole 21, then the first lock body 1 is moved, the first lock body 1 is moved to the first lock rod 11 to be abutted with the second lock body 2, the spring is installed on the installation column 24, the limiting piece 3 is sleeved on the second lock body 2, the buckle 23 is positioned in the moving groove 33, and the buckle 23 is abutted with the limiting part 34 under the action of the compression spring, so that the safety lock is at the sleeved position. In fig. 8, the limiting member 3 is schematically shown in a structure when it is inserted into the first lock body 1.
The process of installing the safety lock on the shell 6 is that the first lock body 1 is firstly moved to the first lock rod 11 to be abutted with the second lock body 2, then the safety lock is placed on one side of the handle 7 with a moving trend, the second lock rod 22 is firstly inserted into a lock hole, then the first lock body 1 is moved, the first lock rod 11 is inserted into another lock hole, then the limiting piece 3 is pressed, the second lock body 2 is overlapped with the hanging lock hole 25 on the limiting piece 3, the locking piece 4 is penetrated into the hanging lock hole 25 to lock the position between the limiting piece 3 and the second lock body 2, at the moment, the locking position is the locking position, the limiting end 32 is inserted into the positioning groove 13, the position relation between the first lock body 1 and the second lock body 2 is fixed, the position between the limiting piece 3 and the first lock body 1 and the second lock body 2 is fixed, and the installation of the safety lock is realized.
After the safety lock is mounted on the housing 6, the safety lock can prevent the handle 7 from moving so as to prevent danger caused by misoperation. The safety lock of this embodiment is characterized in that the first lock body 1 and the second lock body 2 are moved, the first lock rod 11 and the second lock rod 22 are inserted into the corresponding lock holes, then the limiting piece 3 is installed, the relative positions of the first lock body 1 and the second lock body 2 are fixed by the limiting piece 3, so that the safety lock is fixed in the lock holes, and the limiting piece 3 and the second lock body 2 are fixedly connected by the locking piece 4, so that the limiting piece 3 is prevented from being separated from the second lock body 2, and the relative positions of the first lock body 1 and the second lock body 2 are prevented from being fixed, so that the safety lock is safer and more reliable.
Embodiment two:
the difference between this embodiment and the first embodiment is that two padlock holes 25 are provided, and the limiting member 3 and the second lock body 2 are connected through the two padlock holes 25. Of course, the padlock holes 25 may also be provided with three, four, etc.
Embodiment III:
The difference between the first embodiment and the second embodiment is that the locking member 4 is fixedly connected with the limiting member 3 and the first lock body 1, and at this time, a locking portion for locking the locking member 4 needs to be disposed on the limiting member 3 and the first lock body 1, and the structure of the locking portion may be an existing structure, which is not described herein again. The security lock structure in this example is complex in structure relative to the embodiment as a whole.
Embodiment four:
The circuit breaker in this embodiment, as shown in fig. 1, includes the safety lock according to any one of the first to third embodiments, a handle 7 and a housing 6, wherein a moving cavity is provided on the housing 6 for the handle 7 to pass through and move, a lock hole is provided on a cavity wall of the moving cavity, and a first lock rod 11 and a second lock rod 22 of the safety lock extend into the lock hole.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (12)
1. A safety lock for locking the position of a handle (7), located on the side of the handle (7) with a movement tendency, the handle (7) being threaded on a housing (6), characterized in that it comprises:
the first lock body (1) is provided with a first lock rod (11) extending into the lock hole of the shell (6), the end part of the first lock rod (11) is provided with a lock hook (14) formed by downwards sinking the upper surface of the first lock rod (11), and the lock hook (14) is matched with the size of the lock hole;
The second lock body (2) is movably connected with the first lock body (1), a first hole (21) is formed in the second lock body (2), and the other end of the first lock body (1) is a penetrating end (12) penetrating through the first hole (21);
The limiting piece (3) is connected with the first lock body (1) and the second lock body (2) and used for fixing the relative position between the first lock body (1) and the second lock body (2), the limiting piece (3) is sleeved on the second lock body (2), and the limiting end (32) of the limiting piece (3) facing the first lock body (1) is spliced with the first lock body (1);
The locking piece (4) is fixedly connected with the limiting piece (3) and the first lock body (1), or is fixedly connected with the limiting piece (3) and the second lock body (2).
2. Safety lock according to claim 1, characterized in that the threading end (12) is provided with a positioning groove (13) for the insertion of the limiting end (32), the width of the positioning groove (13) being adapted to the wall thickness of the limiting end (32).
3. The safety lock according to claim 2, wherein the limiting piece (3) is of a cylindrical structure and sleeved outside the second lock body (2), and the two positioning grooves (13) are provided for inserting two side walls of the limiting end (32).
4. A safety lock according to any one of claims 2-3, wherein the first lock body (1) is Z-shaped, the piercing end (12) is an upper cross section, and the first lock lever (11) is a lower cross section.
5. A safety lock according to any one of claims 1-3, characterized in that the direction in which the first locking bar (11) is inserted into the locking hole is perpendicular or coincides with the direction of movement of the handle (7).
6. Safety lock according to claim 5, characterized in that a second locking bar (22) is provided on the side of the second locking body (2) remote from the first locking bar (11), said second locking bar (22) being adapted to be inserted into another locking hole of the housing (6), the first locking bar (11) and the second locking bar (22) being in a straight line perpendicular to the direction of movement of the handle (7).
7. The safety lock according to claim 6, wherein the first lock lever (11) and the second lock lever (22) have the same structure, and the lower hole wall of the first hole (21) of the second lock body (2) is in the same plane with the upper surface of the second lock lever (22).
8. A safety lock according to any one of claims 1-3, wherein a buckle (23) is arranged on the side wall of the upper end of the second lock body (2), a moving groove (33) for moving the buckle (23) and a limiting part (34) which is positioned at the lower end of the moving groove (33) and used for preventing the buckle (23) from moving out of the moving groove (33) are arranged on the limiting part (3), and the buckle (23) can penetrate through the limiting part (34) and enter the moving groove (33).
9. A safety lock according to claim 8, further comprising a biasing member (5) disposed between the upper end of the second lock body (2) and the top wall of the retainer (3), the biasing member (5) providing a biasing force to the retainer (3) away from the second lock body (2).
10. Safety lock according to claim 9, characterized in that the top end of the groove wall of the penetrating end (12) remote from the positioning groove (13) of the first lock rod (11) is higher than the upper surface of the penetrating end (12) by a set distance, and when the second lock body (2) and the limiting member (3) are in the sleeved position, the bottom of the limiting end (32) is higher than the upper surface of the penetrating end (12) and lower than the top end of the groove wall remote from the positioning groove (13) of the first lock rod (11).
11. A safety lock according to any one of claims 1-3, characterised in that the second lock body (2) and the limiting member (3) are provided with a padlock hole (25), and in the locked position, the padlock holes (25) in the second lock body (2) and the limiting member (3) coincide for the locking member (4) to lock.
12. The circuit breaker is characterized by comprising the safety lock as claimed in any one of claims 1-11, a handle (7) and a shell (6), wherein a moving cavity for the handle (7) to penetrate and move is formed in the shell (6), a lock hole is formed in the cavity wall of the moving cavity, and a first lock rod (11) of the safety lock stretches into the lock hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846476.XA CN110416008B (en) | 2019-09-06 | 2019-09-06 | Safety lock and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846476.XA CN110416008B (en) | 2019-09-06 | 2019-09-06 | Safety lock and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110416008A CN110416008A (en) | 2019-11-05 |
| CN110416008B true CN110416008B (en) | 2025-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910846476.XA Active CN110416008B (en) | 2019-09-06 | 2019-09-06 | Safety lock and circuit breaker |
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| Country | Link |
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| CN (1) | CN110416008B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341604B (en) * | 2020-04-02 | 2024-08-30 | 苏州未来电器股份有限公司 | Electric operating mechanism for circuit breaker |
| CN117238690B (en) * | 2023-08-23 | 2025-01-24 | 中国长江电力股份有限公司 | A snap-on circuit breaker lock and locking method |
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| CN101882540A (en) * | 2010-07-08 | 2010-11-10 | 江苏辉能电气有限公司 | A low-voltage circuit breaker handle locking device and locking method |
| CN206961711U (en) * | 2017-05-26 | 2018-02-02 | 德力西电气有限公司 | The hanging locking device of mold cased circuit breaker |
| CN210223837U (en) * | 2019-09-06 | 2020-03-31 | 德力西电气有限公司 | Safety lock and circuit breaker |
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| US6396008B1 (en) * | 2001-02-08 | 2002-05-28 | Eaton Corporation | Handle lock device and electrical switching apparatus employing the same |
| CN103871793B (en) * | 2012-12-14 | 2015-12-23 | 西门子公司 | Circuit breaker and hand locking device thereof |
| CN203707046U (en) * | 2013-11-20 | 2014-07-09 | 德力西电气有限公司 | Internal locking module of breaker |
| CN205376341U (en) * | 2016-02-16 | 2016-07-06 | 杭耀电气有限公司 | Safe type circuit breaker |
| CN106876223B (en) * | 2017-04-20 | 2019-08-30 | 德力西电气有限公司 | A kind of hand locking device and breaker |
| CN206992021U (en) * | 2017-07-07 | 2018-02-09 | 德力西电气有限公司 | A kind of hanging locking device of breaker of plastic casing |
| CN208352166U (en) * | 2018-04-11 | 2019-01-08 | 德力西电气有限公司 | Breaker with handle lock |
| CN208873684U (en) * | 2018-07-23 | 2019-05-17 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker handle hanging locking device |
| CN208722824U (en) * | 2018-08-08 | 2019-04-09 | 浙江正泰电器股份有限公司 | Anti-error closing mechanism and breaker |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882540A (en) * | 2010-07-08 | 2010-11-10 | 江苏辉能电气有限公司 | A low-voltage circuit breaker handle locking device and locking method |
| CN206961711U (en) * | 2017-05-26 | 2018-02-02 | 德力西电气有限公司 | The hanging locking device of mold cased circuit breaker |
| CN210223837U (en) * | 2019-09-06 | 2020-03-31 | 德力西电气有限公司 | Safety lock and circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110416008A (en) | 2019-11-05 |
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