CN117253755A - Small-sized breaker locking structure - Google Patents
Small-sized breaker locking structure Download PDFInfo
- Publication number
- CN117253755A CN117253755A CN202311272591.3A CN202311272591A CN117253755A CN 117253755 A CN117253755 A CN 117253755A CN 202311272591 A CN202311272591 A CN 202311272591A CN 117253755 A CN117253755 A CN 117253755A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- handle
- stop rod
- locking piece
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- 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
- H01H71/04—Means for indicating condition of the switching device
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
-
- 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
-
- 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
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators
Abstract
The invention discloses a small-sized breaker locking structure which comprises a breaker shell and a handle, wherein the handle is provided with a rotating shaft part which is rotationally connected with the breaker shell, a locking piece is rotationally arranged on the breaker shell, the locking piece is in limit fit with a limit part on the rotating shaft part of the handle through a stop rod, the moving path of the stop rod is intersected with the moving path of the rotating shaft part, after the handle is opened, the stop rod is driven to be connected with the limit part through the rotation of the locking piece to form limit fit for limiting the rotation of the handle, so that the breaker is locked in an opening state.
Description
Technical Field
The invention relates to the technical field of piezoelectric devices, in particular to a locking structure of a miniature circuit breaker.
Background
The miniature circuit breaker is an electric appliance which has the function of manual switching and can automatically carry out overload and short-circuit protection, and can be used as the switching of the infrequent switching and switching operation of a circuit under normal conditions, thereby realizing the on-off of the circuit. Existing miniature circuit breakers are typically installed in a power distribution cabinet with a handle portion exposed on a panel of the cabinet for ease of operation. When maintenance personnel carry out maintenance and overhaul on a lower-level line controlled by the circuit breaker, the handle of the circuit breaker is kept at the opening position, but under the condition that operators do not know or lack communication, the situation of carrying out error closing operation on the circuit breaker can occur, so that safety accidents are caused. In order to prevent the breaker handle from performing false closing operation during maintenance, the current common method is as follows: pin holes on two sides of a handle are oppositely formed in a circuit breaker shell, then a pin shaft is arranged in the pin holes in a penetrating mode, when the circuit breaker is disconnected, the pin shaft is inserted into the pin holes to limit closing movement of the handle, but the pin shaft is easily inserted into the pin holes to loosen, so that the mounting stability is poor, potential safety hazards exist, and the locking effect of the handle is poor.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the pin shaft is inserted into the pin hole to keep the breaker handle at the opening position of the opening in the prior art, the pin shaft is easy to loose, the installation stability is poor and the locking effect of the handle is poor
In order to solve the above problems, the present invention provides a small-sized circuit breaker locking structure, comprising a circuit breaker housing and a handle having a rotation shaft portion rotatably connected in the circuit breaker housing; the circuit breaker shell is rotatably provided with a locking piece, the locking piece is provided with a stop rod which is intersected with the movement path of the rotating shaft part, and the rotating shaft part is provided with a limit part which can form limit fit with the stop rod; after the handle is opened, the locking piece is rotated to drive the stop rod to be connected with the limiting part to form limiting fit for limiting the rotation of the handle.
As a preferable scheme, the limiting part is a limiting groove arranged on the peripheral side wall of the rotating shaft part, and the stop rod can be rotatably blocked in the limiting groove to form limiting fit when the handle is separated.
As a preferable scheme, the limiting part is a limiting projection arranged on the peripheral side wall of the rotating shaft part, the stop rod is rotatably clamped on one side of the limiting projection when the handle is separated from the brake, and the stop rod is matched with the limiting projection to support so as to limit the handle to rotate.
As a preferable scheme, the rotating shaft part is rotatably connected in a handle groove of the circuit breaker shell through a positioning shaft, a mounting groove suitable for mounting the locking piece and the stop rod is arranged in the circuit breaker shell, and the stop rod extends into the handle groove from the mounting groove to be matched with and offset or separated from the limiting part.
As a preferred aspect, the mounting groove has an open end provided at the top of the circuit breaker housing, one end of the locking member is an operating end accommodated at the open end, and the operating end is provided with a driving groove.
As a preferable scheme, the stop rod is fixedly connected or integrally formed at the other end of the locking piece, and the stop rod is connected with the locking piece to form an L-shaped structure.
As a preferable scheme, two positioning plates limited between the operation end and the stop rod are arranged in the mounting groove, and the lower end of the mounting groove is separated by the positioning plates to form a positioning groove part suitable for mounting the stop rod.
As a preferred scheme, an indicating structure is arranged between the locking piece and the circuit breaker shell, and the indicating structure is provided with a locking state for indicating the locking piece to limit the rotation of the handle and an unlocking state for indicating the locking piece to release the rotation limitation of the handle in the rotation process of the locking piece.
As a preferred scheme, the indicating structure comprises a locking mark and an unlocking mark which are arranged at the top of the circuit breaker shell, and an indicating arrow which is arranged on the operating end, wherein the indicating arrow points to the locking mark when the locking piece drives the stop rod to form limit fit with the limit part, and points to the unlocking mark when the locking piece drives the stop rod to release limit fit with the limit part.
As a preferable mode, the driving groove is a straight groove structure arranged on the operation end, the indication arrow is an arrow groove arranged at one end of the driving groove, and the pointing direction of the indication arrow is consistent with the extending direction of the stop rod.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. according to the small circuit breaker locking structure provided by the invention, the locking piece which can be rotated by external force is arranged on the circuit breaker shell, the locking piece is in limit fit with the limit part on the handle rotating shaft part through the stop rod, and the movement path of the stop rod is intersected with the movement path of the rotating shaft part.
2. According to the small-sized circuit breaker locking structure provided by the invention, the limiting part is the limiting groove arranged on the peripheral side wall of the rotating shaft, the limiting groove is driven to be positioned on the movement path of the stop rod when the handle rotates to the opening position, at the moment, the stop rod can be driven to rotate and be inserted into the limiting groove only by rotating the locking piece, the handle can be limited to rotate through the limiting fit formed by the stop rod and the limiting groove, the locking effect of the handle at the opening position is realized, and in this way, the circuit breaker can be prevented from being reclosed by a person without knowledge in the maintenance process, so that the safety of maintenance work is ensured; after the overhaul work is finished, the locking piece is only required to be rotated reversely, and the stop rod can be driven to withdraw from the limiting groove, so that the limiting cooperation between the stop rod and the handle is released, and the handle can be used for freely performing opening and closing operations of the circuit breaker.
3. In the locking structure of the miniature circuit breaker, one end of the locking piece is the operating end accommodated at the opening end, the operating end is provided with the driving groove, and the driving groove can be preferably of a straight groove structure.
4. According to the small circuit breaker locking structure, the locking mark and the unlocking mark are arranged on the top of the circuit breaker shell, the indication arrow is arranged on the operating end of the locking piece, the indication arrow points to the locking mark when the locking piece drives the stop rod to form limit fit with the limiting part, namely, the locking piece locks the handle at the opening position and can not rotate, and correspondingly, the indication arrow points to the unlocking mark when the locking piece drives the stop rod to release limit fit with the limiting part, namely, the indication arrow points to the locking mark or the unlocking mark, so that the handle can be freely opened and closed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural view of a locking structure of a miniature circuit breaker provided by the invention;
fig. 2 is a partially enlarged schematic view of a locking structure of a miniature circuit breaker according to the present invention;
FIG. 3 is a schematic perspective view of the indication structure of the present invention;
FIG. 4 is a schematic plan view of the indicating structure of the present invention;
FIG. 5 is a schematic view of the structure of the locking member and the stop lever of the present invention;
reference numerals illustrate: 1. a circuit breaker housing; 11. a handle groove; 2. a handle; 21. a rotating shaft portion; 3. a locking member; 31. an operation end; 32. a driving groove; 4. a stop lever; 5. a limit groove; 6. a mounting groove; 61. an open end; 62. a positioning plate; 63. a positioning groove part; 7. an indication arrow; 8. locking the identification; 9. unlocking the identification.
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 terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The present embodiment is specifically described below with reference to the accompanying drawings:
the embodiment provides a small-sized circuit breaker locking structure as shown in fig. 1-5, which comprises a circuit breaker shell 1 and a handle 2, wherein the handle 2 is provided with a rotating shaft part 21 which is rotatably connected with the circuit breaker shell 1, a locking piece 3 is rotatably arranged on the circuit breaker shell 1, the locking piece 3 is provided with a stop rod 4 which is intersected with a moving path of the rotating shaft part 21, the rotating shaft part 21 is provided with a limiting part which can form limiting fit with the stop rod 4, and after the handle 2 is disconnected, the locking piece 3 is rotated to drive the stop rod 4 to be connected with the limiting part to form limiting fit for limiting the rotation of the handle 2, so that the handle 2 is locked at a disconnection position; in addition, when the circuit breaker needs to be reclosed, the stop rod is separated from the limiting part under the drive of the locking piece 3, so that the limiting cooperation between the stop rod 4 and the limiting part is released, and the handle 2 can normally close.
In the above embodiment, according to the locking piece 3 which can be rotated by external force is arranged on the breaker housing 1, the locking piece 3 forms limit fit with the limit part on the rotating shaft part 21 of the handle 2 through the stop rod 4, and the moving path of the stop rod 4 and the moving path of the rotating shaft part 21 are intersected.
The specific arrangement mode of the limiting part is described below;
as a preferred embodiment, as shown in fig. 1-2, the limiting portion is a limiting groove 5 disposed on the peripheral side wall of the rotating shaft portion 21, when the handle 2 rotates to the opening position, the limiting groove 5 is driven to be located on the moving path of the stop rod 4, at this time, the locking piece 3 is rotated, so that the stop rod can be driven to rotate and be blocked in the limiting groove 5, the handle 2 can be limited to rotate by the limiting cooperation of the stop rod 4 and the limiting groove 5, the function of locking the handle 2 at the opening position is achieved, and in this way, the design can prevent the breaker from being reclosed by a person under the condition of unknowing in the overhaul process, so as to ensure the safety of the overhaul work. It should be understood that, when the handle is closed, the limit groove 5 rotates along with the rotating shaft portion 21 and then is staggered with the stop rod, and at this time, the rotation of the stop rod is blocked by the side wall of the rotating shaft portion, so that the rotation of the locking member is limited. After the overhaul work is completed, the locking piece 3 is only required to rotate in the opposite direction, and the stop rod 4 can be driven to withdraw from the limit groove 5, so that limit fit between the stop rod and the handle is relieved, and the handle 2 can be used for freely performing opening and closing operation of the circuit breaker.
As an alternative implementation mode of the limiting part, the limiting part is a limiting projection arranged on the peripheral side wall of the rotating shaft part 21, the stop rod is rotatably clamped on one side of the limiting projection when the handle 2 is opened, so that the stop rod is positioned on the path of the limiting projection rotating along with the closing of the handle 2, the handle 2 is limited to rotate by being matched and propped against the limiting boss through the stop rod, the function of locking the handle at the opening position is realized, the misoperation closing operation of the circuit breaker in the overhauling process is prevented, and the safety of overhauling work is ensured. In summary, the stop rod is in limit fit with the limit groove or the limit projection, so that the position of the handle can be limited and locked, the operation process is simple and convenient, and a person skilled in the art can select the setting mode of the limit part according to the above, so that other equivalent embodiments are not repeated.
In this embodiment, as shown in fig. 2-4, the rotating shaft portion 21 is rotatably connected to the handle 2 groove 11 of the circuit breaker housing 1 through a positioning shaft, the circuit breaker housing 1 is provided with a mounting groove 6 suitable for mounting the locking member 3 and the stop rod 4, the stop rod 4 extends from the mounting groove 6 into the handle 2 groove 11 to be cooperatively connected with or separated from the stop rod, wherein the mounting groove 6 has an opening end 61 arranged at the top of the circuit breaker housing 1, one end of the locking member 3 is an operating end 31 accommodated at the opening end 61, a driving groove 32 is arranged on the operating end 31, the driving groove 32 can be preferably in a linear groove structure, according to the above, the stop groove 5 arranged on the rotating shaft portion 21 can be preferably arranged, and after the handle is separated, a tool such as a screwdriver can be used for operating the hand to drive the locking member 3 to rotate, and further drive the stop rod to be inserted into the stop groove of the rotating shaft to form a stop fit, so as to realize the locking function of the handle position.
It is further preferable that the locking rod 4 is fixedly connected to the other end of the locking member, or the locking rod 4 is integrally formed on the other end of the locking member 3, and is connected to the locking member 3 and the locking rod 4 according to an L-shaped structure, so as to meet the requirement of the connection distance between the locking member 3 and the rotating shaft portion 21. In order to prevent the locking member 3 and the stop rod 4 from loosening in the mounting groove 6, two positioning plates 62 are arranged in the mounting groove 6 and limited between the operating end 31 and the stop rod 4, the locking member 3 is provided with a round shaft part penetrating through the positioning plates 62 and connected with the stop rod 4, the lower end of the mounting groove 6 is separated by the positioning plates 62 to form a positioning groove part 63 suitable for mounting the stop rod 4, and the structural design has the effect of positioning and rotating the locking member 3 and the stop rod 4 in the mounting groove 6.
In order to facilitate the operator to clearly understand the matching relationship between the locking member 3 and the handle 2, an indication structure is provided between the locking member 3 and the breaker housing 1, and the indication structure has a locking state for indicating that the locking member 3 restricts the handle to rotate and an unlocking state for indicating that the locking member 3 releases the handle from rotating during the rotation of the locking member 3.
As a preferred embodiment, as shown in connection with fig. 1-4, the indication structure comprises a locking mark 8 and an unlocking mark 9 arranged on the top of the breaker housing 1, and an indication arrow 7 arranged on the operation end 31, wherein the indication arrow 7 is an arrow slot arranged at one end of the driving slot 32, and the direction of the indication arrow 7 is consistent with the extending direction of the stop rod 4, and the locking mark 8 and the unlocking mark 9 are respectively a locking pattern and an unlocking pattern. The indicating structure works as follows: the indication arrow 7 points to the locking mark 8 when the locking piece 3 drives the stop rod to form limit fit with the limit part, namely the locking piece 3 locks the handle 2 and locks the handle 2 at the opening position so as not to rotate, so that the circuit breaker is locked at the opening state so as not to be closed; correspondingly, the indication arrow 7 points to the unlocking mark 9 when the locking piece 3 drives the stop rod to be in stop fit with the limiting part, namely, the locking piece 3 is used for unlocking the handle 2, so that the breaker can operate the handle to rotate freely to realize opening and closing. By means of the structure, an operator can clearly know the locking or unlocking state of the locking piece to the handle through observing the indication arrow 7 to point to the locking mark 8 or the unlocking mark 9, the effect of reminding indication is achieved, and the operator is ensured to operate more safely and reliably.
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 (10)
1. A small-sized circuit breaker locking structure comprises a circuit breaker housing (1) and a handle (2), wherein the handle (2) is provided with a rotating shaft part (21) which is rotatably connected with the circuit breaker housing (1); the method is characterized in that: the circuit breaker is characterized in that a locking piece (3) is rotatably arranged on the circuit breaker shell (1), the locking piece (3) is provided with a stop rod (4) intersected with a movement path of the rotating shaft part (21), and the rotating shaft part (21) is provided with a limit part which can form limit fit with the stop rod (4); after the handle (2) is disconnected, the locking piece (3) is rotated to drive the stop rod (4) to be connected with the limiting part to form limiting fit for limiting the rotation of the handle (2).
2. The miniature circuit breaker lockout structure of claim 1, wherein: the limiting part is a limiting groove (5) arranged on the peripheral side wall of the rotating shaft part (21), and the stop rod can be rotatably clamped in the limiting groove (5) to form limiting fit when the handle (2) is disconnected.
3. The miniature circuit breaker lockout structure of claim 1, wherein: the limiting part is a limiting projection arranged on the peripheral side wall of the rotating shaft part (21), the stop rod is rotatably clamped on one side of the limiting projection when the handle (2) is disconnected, and the stop rod is matched with the limiting projection to support so as to limit the handle (2) to rotate.
4. A miniature circuit breaker locking structure according to any one of claims 1-3 wherein: the rotating shaft part (21) is rotatably connected in a handle groove (11) of the circuit breaker shell (1) through a positioning shaft, a mounting groove (6) suitable for mounting the locking piece (3) and the stop rod (4) is arranged in the circuit breaker shell (1), and the stop rod (4) extends into the handle groove (11) from the mounting groove (6) to be matched with the limiting part for connection or separation.
5. The miniature circuit breaker lockout structure of claim 4, wherein: the mounting groove (6) is provided with an opening end (61) arranged at the top of the breaker shell (1), one end of the locking piece (3) is an operating end (31) accommodated at the opening end (61), and the operating end (31) is provided with a driving groove (32).
6. The miniature circuit breaker lockout structure of claim 5, wherein: the stop rod (4) is fixedly connected or integrally formed at the other end of the locking piece, and the stop rod (4) is connected with the locking piece (3) to form an L-shaped structure.
7. The miniature circuit breaker lockout structure of claim 6, wherein: two locating plates (62) limited between the operating end (31) and the stop rod (4) are arranged in the mounting groove (6), and the lower end of the mounting groove (6) is separated by the locating plates (62) to form a locating groove part (63) suitable for mounting the stop rod (4).
8. The miniature circuit breaker locking structure of any one of claims 5-7 wherein: an indication structure is arranged between the locking piece (3) and the breaker shell (1), and the indication structure is provided with a locking state used for indicating the locking piece (3) to limit the handle (2) to rotate and an unlocking state used for indicating the locking piece (3) to release the handle (2) from being limited to rotate in the rotation process of the locking piece (3).
9. The miniature circuit breaker lockout structure of claim 8, wherein: the indicating structure comprises a locking mark (8) and an unlocking mark (9) which are arranged at the top of the circuit breaker shell (1), and an indicating arrow (7) which is arranged on the operating end (31), wherein the indicating arrow (7) points to the locking mark (8) when the locking piece (3) drives the stop rod to form limit fit with the limit part, and points to the unlocking mark (9) when the locking piece (3) drives the stop rod to release limit fit with the limit part.
10. The miniature circuit breaker lockout structure of claim 9, wherein: the driving groove (32) is of a straight groove structure arranged on the operation end (31), the indication arrow (7) is an arrow groove arranged at one end of the driving groove (32), and the pointing direction of the indication arrow (7) is consistent with the extending direction of the stop rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272591.3A CN117253755A (en) | 2023-09-28 | 2023-09-28 | Small-sized breaker locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272591.3A CN117253755A (en) | 2023-09-28 | 2023-09-28 | Small-sized breaker locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117253755A true CN117253755A (en) | 2023-12-19 |
Family
ID=89126163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311272591.3A Pending CN117253755A (en) | 2023-09-28 | 2023-09-28 | Small-sized breaker locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117253755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117577491A (en) * | 2024-01-16 | 2024-02-20 | 浙江厚达电气有限公司 | Locking mechanism of opening and closing equipment |
-
2023
- 2023-09-28 CN CN202311272591.3A patent/CN117253755A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117577491A (en) * | 2024-01-16 | 2024-02-20 | 浙江厚达电气有限公司 | Locking mechanism of opening and closing equipment |
| CN117577491B (en) * | 2024-01-16 | 2024-03-29 | 浙江厚达电气有限公司 | Locking mechanism of opening and closing equipment |
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