CN112582220B - A rotary disc installation mechanism for plug-in circuit breaker - Google Patents
A rotary disc installation mechanism for plug-in circuit breaker Download PDFInfo
- Publication number
- CN112582220B CN112582220B CN201910926512.3A CN201910926512A CN112582220B CN 112582220 B CN112582220 B CN 112582220B CN 201910926512 A CN201910926512 A CN 201910926512A CN 112582220 B CN112582220 B CN 112582220B
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- Prior art keywords
- circuit breaker
- unlocking
- sliding block
- plug
- button
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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
- H01H71/02—Housings; Casings; Bases; Mountings
-
- 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
- H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
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- Trip Switchboards (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
一种插入式断路器的转盘式安装机构，它包括插入式断路器(A)和机框(B)，其特征在于：还包括锁定机构(C)，所述锁定机构(C)能够对插入式断路器(A)进行锁定或解锁实现其对应的固定安装在所述机框(B)中或在机框(B)中抽插；转盘机构(D)能够推动所述锁定机构(C)对所述插入式断路器(A)进行解锁，解锁机构(E)能够带动所述转盘机构(D)运动从而实现所述锁定机构(C)对所述插入式断路器(A)进行解锁。本安装结构实现断路器顺利稳定的安装于机框中，锁定机构与机框锁定时，断路器不能从安装机框中拔出；按下锁定件的操作柄，断路器能轻松方便地从机框中取出，无需借助工具。
A turntable installation mechanism for a plug-in circuit breaker, comprising a plug-in circuit breaker (A) and a frame (B), characterized in that: it also comprises a locking mechanism (C), wherein the locking mechanism (C) can lock or unlock the plug-in circuit breaker (A) to achieve its corresponding fixed installation in the frame (B) or insertion and extraction in the frame (B); a turntable mechanism (D) can push the locking mechanism (C) to unlock the plug-in circuit breaker (A), and an unlocking mechanism (E) can drive the turntable mechanism (D) to move so that the locking mechanism (C) can unlock the plug-in circuit breaker (A). This installation structure enables the circuit breaker to be installed smoothly and stably in the frame, and when the locking mechanism is locked with the frame, the circuit breaker cannot be pulled out of the installation frame; by pressing the operating handle of the locking member, the circuit breaker can be easily and conveniently taken out of the frame without the aid of tools.
Description
Technical Field
The invention belongs to the technical field of piezoelectric devices, and particularly relates to a rotary disc type mounting mechanism of a plug-in circuit breaker.
Background
The circuit breaker is classified into a high voltage circuit breaker and a low voltage circuit breaker according to its range of use. The low-voltage breaker is also called automatic switch, which is an electric appliance with manual switch function and automatic overload and short-circuit protection. The device can be used for distributing electric energy, protecting power supply circuits, electric equipment and the like, and can automatically cut off the circuits when serious overload or short circuit and other faults occur, the functions of the device are equivalent to the combination of a fuse type switch, a thermal relay and the like, and parts do not need to be changed after fault current is disconnected, so that the device has wide application.
The circuit breaker is divided into the following mounting modes: the plug-in circuit breaker has plug-in, fixed and drawer type, and the use of plug-in circuit breaker can effectively improve the security of electrical equipment service industry, along with the wide use of plug-in circuit breaker on various electrical equipment, in order to satisfy the installation needs of various different electrical equipment, the structure of plug-in circuit breaker also develops to various types, in the overall arrangement of current traditional circuit breaker product when mounted position, generally adopts elastic component clamping piece to lock the circuit breaker on the guide rail, if need the unblock take off the circuit breaker need rely on additional instrument, the operation is inconvenient.
The chinese patent of publication No. CN104167310a discloses a buckle mechanism of a piezoelectric device and a small-sized circuit breaker, which provides a buckle with an elastic part, the buckle fixes the circuit breaker on an installation guide rail under the action of the elastic part, and when the circuit breaker is taken down, a screwdriver is required to be inserted into a hole at the tail part of the clamping part, and the elasticity of the elastic part is overcome forcefully, so that the buckle and the guide rail are unlocked, and the circuit breaker can be taken down.
Disclosure of Invention
The invention aims at solving the technical defect that the conventional plug-in circuit breaker needs to be unlocked by using an additional tool to cause inconvenient operation, and provides a rotary disc type mounting mechanism of the plug-in circuit breaker, and the circuit breaker is smoothly and stably mounted in a frame through the mounting mechanism; meanwhile, through an operation structure on the operation installation mechanism, the circuit breaker can be unlocked from the machine frame, and the circuit breaker can be easily taken out from the machine frame, so that the convenience of installation and use of the circuit breaker is improved.
Technical proposal
In order to achieve the technical purpose, the invention provides a rotary disc type mounting mechanism of a plug-in circuit breaker, which comprises the plug-in circuit breaker and a frame, wherein the plug-in circuit breaker can be installed in the frame in a drawing and inserting way, and the rotary disc type mounting mechanism is characterized in that: the locking mechanism can lock or unlock the plug-in circuit breaker to realize the corresponding fixed installation in the machine frame or the extraction and insertion in the machine frame;
The locking mechanism is linked with the rotary table mechanism, the rotary table mechanism can push the locking mechanism to unlock the plug-in circuit breaker, the rotary table mechanism is linked with the unlocking mechanism, and the unlocking mechanism can drive the rotary table mechanism to move so as to realize that the locking mechanism unlocks the plug-in circuit breaker.
Further, the locking mechanism comprises a sliding block, the sliding block is located inside the circuit breaker shell, one end of the sliding block can penetrate out or retract from an opening formed by the circuit breaker shell and the machine frame correspondingly, the other end of the sliding block is linked with the turntable mechanism, one end of a torsion spring on a torsion spring installation shaft arranged on the circuit breaker shell is propped against a boss I on the circuit breaker shell, and the other end of the torsion spring is propped against a step part on the sliding block, so that the sliding block is driven by driving force penetrating out from the opening.
Further, the turntable mechanism comprises a turntable body, the turntable body is arranged on a turntable mounting shaft on the circuit breaker shell and can rotate, a slide block linkage shaft extends out of the turntable body, the slide block linkage shaft is arranged in a linkage shaft mounting hole on the slide block, the slide block can be driven to retract from an opening part through the slide block linkage shaft in the rotating process of the turntable body, and an unlocking linkage shaft also extends out of the turntable body and is linked with the unlocking mechanism.
Further, release mechanism includes the unblock connecting rod, unblock connecting rod one end is equipped with the unblock universal driving shaft mounting hole, and the unblock universal driving shaft dress is in the unblock universal driving shaft mounting hole, the unblock connecting rod other end is equipped with the linkage boss, and the button dress is in the button inslot of circuit breaker casing can slide, the button is in the button inslot outwards slides the in-process can drive thereby the linkage boss motion on the corresponding end of unblock connecting rod drives through the unblock connecting rod the rotation of carousel body homeopathic, the button is in the button inslot inwards slide in-process with the linkage boss breaks away from, the slider is in under the effect of torsional spring has the drive power of following the opening and wearing out.
Further, a limiting part is arranged on the sliding block, and the limiting part is contacted with the circuit breaker shell to limit the movement stroke of the sliding block.
Further, the sliding block comprises a first sliding block and a second sliding block, and the first sliding block and the second sliding block are respectively positioned at the upper side and the lower side of the circuit breaker shell and correspond to corresponding sliding block linkage shafts on the turntable body.
According to the invention, the unlocking mechanism comprises an unlocking piece, the middle part of the unlocking piece is rotatably arranged on an unlocking piece mounting shaft on the circuit breaker shell, one end of the unlocking piece is provided with an unlocking button, the other end of the unlocking piece is provided with an unlocking table, the unlocking table is in linkage with the rotary table mechanism, the unlocking button exposes out of the circuit breaker shell through an opening of the circuit breaker shell, and the unlocking button drives the unlocking piece to rotate anticlockwise under the action of external force so as to drive the rotary table body to rotate clockwise.
Further, the operation table extends out of the rotary table body, and the operation table is linked with the unlocking table.
The invention also provides an embodiment that the torsion spring II is arranged on the turntable body to enable the turntable body to have a counterclockwise rotation trend.
Advantageous effects
The rotary disc type mounting mechanism of the plug-in circuit breaker provided by the invention realizes that the circuit breaker is smoothly and stably mounted in the machine frame, and when the locking piece is locked with the machine frame, the circuit breaker cannot be pulled out from the mounting machine frame; the breaker can be easily and conveniently taken out of the frame without tools by pressing the operating handle of the locking piece.
Drawings
FIG. 1a is a diagram of a product according to example 1 of the present invention;
FIG. 1b is a second diagram of the product of example 1 of the present invention;
FIG. 2 is a locked state diagram of embodiment 1 of the present invention;
FIG. 3 is an unlock state diagram of embodiment 1 of the present invention;
fig. 4 is a diagram showing a locked state of the plug-in circuit breaker according to embodiment 1 of the present invention;
FIG. 5 is a schematic structural diagram of a turntable mechanism in embodiment 1 of the present invention;
FIG. 6 is a schematic view of a slider according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of the unlocking link in embodiment 1 of the present invention;
FIG. 8 is a locked state diagram of embodiment 2 of the present invention;
FIG. 9 is an unlock state diagram of embodiment 2 of the present invention;
Fig. 10 is a schematic structural diagram of an unlocking member according to embodiment 2 of the present invention;
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1
The rotary disc type mounting mechanism of the plug-in circuit breaker comprises a plug-in circuit breaker A and a machine frame B, wherein the plug-in circuit breaker A can be installed in the machine frame B in a drawing manner, and the rotary disc type mounting mechanism also comprises a locking mechanism C, wherein the locking mechanism C can lock or unlock the plug-in circuit breaker A to realize the corresponding fixed installation in the machine frame B or drawing and inserting in the machine frame B;
As shown in fig. 1a and 1b, the locking mechanism C is linked with the rotating disc mechanism D, the rotating disc mechanism D can push the locking mechanism C to unlock the plug-in circuit breaker a, the rotating disc mechanism D is linked with the unlocking mechanism E, and the unlocking mechanism E can drive the rotating disc mechanism D to move so as to unlock the plug-in circuit breaker a by the locking mechanism C.
As shown in fig. 1a,1B,2 and 3, the locking mechanism C includes a slider C1, where the slider C1 is located inside the circuit breaker housing a, one end of the slider C1 can be extended or retracted from an opening C2B formed by the circuit breaker housing C2 and the frame B, the other end is linked with the turntable mechanism D, one end of a torsion spring C3 mounted on a torsion spring mounting shaft C201 of the circuit breaker housing C2 abuts against a boss C202 of the circuit breaker housing C2, and the other end abuts against a step C101 of the slider C1, so that the slider C1 is subjected to a driving force extending from the opening C2B. As shown in fig. 6, the slider C1 is provided with a limiting portion C103, and the limiting portion C103 contacts with the circuit breaker housing C2 to limit the movement stroke of the slider C1. In this embodiment, the slider C1 includes a first slider C1a and a second slider C1b, where the first slider C1a and the second slider C1b are respectively located on the upper and lower sides of the circuit breaker housing C2 and correspond to the corresponding slider linkage shafts D101 on the turntable body D1.
As shown in fig. 5, the turntable mechanism D includes a turntable body D1, where the turntable body D1 is mounted on a turntable mounting shaft C203 on the circuit breaker housing C2 and capable of rotating, and the turntable body D1 extends out of a slider linkage shaft D101, where the slider linkage shaft D101 is mounted in a linkage shaft mounting hole C102 on the slider C1, and the linkage shaft mounting hole C102 is a slotted hole, and a length direction of the linkage shaft mounting hole C102 is perpendicular to a length direction of the slider C1, so that rotation of the turntable body D1 can be ensured to be changed into linear sliding of the slider C1 without interference.
The rotating disc body D1 can drive the sliding block C1 to retract from the opening part C2B through the sliding block linkage shaft D101 in the homeopathic rotation process, the unlocking linkage shaft D102 also stretches out of the rotating disc body D1, and the unlocking linkage shaft D102 is linked with the unlocking mechanism E.
The unlocking mechanism E comprises an unlocking connecting rod E1, as shown in fig. 7, one end of the unlocking connecting rod E1 is provided with an unlocking linkage shaft mounting hole E101, an unlocking linkage shaft D102 is arranged in the unlocking linkage shaft mounting hole E101, the unlocking linkage shaft mounting hole E101 is a long round hole, the length direction of the unlocking linkage shaft mounting hole E101 is perpendicular to the length direction of the unlocking connecting rod E1, and the linear motion rotation of the unlocking connecting rod E1 can be ensured to be changed into rotation of the turntable body D1 without interference. The unlocking connecting rod E1 other end is equipped with linkage boss E102, and button E2 dress can slide in the button groove C204 of circuit breaker casing C2, button E2 is in the button groove C204 outwards slides the in-process can drive linkage boss E102 motion on the corresponding end of unlocking connecting rod E1 thereby drives through unlocking connecting rod E1 carousel body D1 homeopathic rotation, button E2 in the button groove C204 inwards slide in-process with linkage boss E102 breaks away from, slider C1 is in under the effect of torsional spring C3 has the drive power of following opening C2B and wearing out.
As shown in fig. 4, after the plug-in circuit breaker a is inserted into the frame B, the slider C1 moves in the circuit breaker housing C2 under the action of the torsion spring C3 and passes through the opening C2B to be buckled with the frame B, and after buckling, the plug-in circuit breaker a is pulled outwards, so that the plug-in circuit breaker a cannot be taken out from the frame B; the button E2 is pulled outwards, the button E2 can drive the linkage boss E102 on the corresponding end of the unlocking connecting rod E1 to move in the outwards sliding process, so that the rotary table body D1 is driven to rotate clockwise, the rotary table body D1 is driven to retract from the opening part C2B to be unlocked from the frame B through the sliding block linkage shaft D101 in the clockwise rotation process, the button E2 is pulled leftwards continuously, and the plug-in circuit breaker A can be taken out from the frame B easily.
Example 2
As shown in fig. 8,9 and 10, in another embodiment of the present invention, the unlocking mechanism E includes an unlocking member E3, the middle part of the unlocking member E3 is rotatably mounted on an unlocking member mounting shaft C205 on the circuit breaker housing C2, one end of the unlocking member E3 is provided with an unlocking button E3a, the other end is provided with an unlocking table E3b, the unlocking table E3b is linked with an operating table D103 extending from the rotating disc body D1 of the rotating disc mechanism D, the unlocking button E3a exposes the circuit breaker housing C2 through an opening C2C of the circuit breaker housing C2, and the unlocking button E3a drives the unlocking member E3 to rotate anticlockwise under the action of an external force so as to drive the rotating disc body D1 to rotate clockwise.
In this embodiment, the unlocking button E3a of the unlocking member E3 is pressed, the unlocking member E3 rotates anticlockwise, the turntable mechanism D is driven to rotate clockwise, the turntable mechanism D drives the sliding block C1 to overcome the counter force of the torsion spring C3, and move towards the inside of the circuit breaker housing C2 until the sliding block C1 completely enters the inside of the circuit breaker housing C2, the plug-in circuit breaker a is tripped from the frame B, the plug-in circuit breaker a is pulled outwards continuously, and the plug-in circuit breaker a can be taken out from the frame B easily.
Example 3
In another embodiment of the present invention, the torsion spring two is directly mounted on the turntable body D1, so that the turntable body D1 has a counterclockwise rotation tendency, the counterclockwise rotation tendency of the turntable body D1 is converted into a driving force of the slider C1 penetrating through the opening portion C2B, and other structures are the same as those of embodiment 1 or embodiment 2.
The structures, proportions, sizes, amounts and so forth shown in the drawings of the present embodiment are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes of the structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit and scope thereof. 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 (5)
1. The utility model provides a carousel formula installation mechanism of plug-in circuit breaker, it includes plug-in circuit breaker (A) and frame (B), plug-in circuit breaker (A) can take out the dress of inserting in frame (B), its characterized in that: the circuit breaker further comprises a locking mechanism (C), wherein the locking mechanism (C) can lock or unlock the plug-in circuit breaker (A) to realize corresponding fixed installation in the machine frame (B) or extraction and insertion in the machine frame (B);
The locking mechanism (C) is linked with the rotating disc mechanism (D), the rotating disc mechanism (D) can push the locking mechanism (C) to unlock the plug-in circuit breaker (A), the rotating disc mechanism (D) is linked with the unlocking mechanism (E), and the unlocking mechanism (E) can drive the rotating disc mechanism (D) to move so as to unlock the plug-in circuit breaker (A) by the locking mechanism (C);
The locking mechanism (C) comprises a sliding block (C1), wherein the sliding block (C1) is positioned in the circuit breaker shell (C2), one end of the sliding block can penetrate or retract from an opening (C2B) formed by the circuit breaker shell (C2) and the machine frame (B) correspondingly, the other end of the sliding block is linked with the rotating disc mechanism (D), a first torsion spring (C3) is arranged on a first torsion spring mounting shaft (C201) on the circuit breaker shell (C2), one end of the first torsion spring is propped against a first boss (C202) on the circuit breaker shell (C2), the other end of the first torsion spring is propped against a step (C101) on the sliding block (C1), and the sliding block (C1) is driven by a driving force penetrating out from the opening (C2B);
The rotary table mechanism (D) comprises a rotary table body (D1), wherein the rotary table body (D1) is arranged on a rotary table mounting shaft (C203) on a circuit breaker shell (C2) and can rotate, a sliding block linkage shaft (D101) extends out of the rotary table body (D1), the sliding block linkage shaft (D101) is arranged in a linkage shaft mounting hole (C102) on the sliding block (C1), the sliding block (C1) can be driven to retract from an opening (C2B) through the sliding block linkage shaft (D101) in the clockwise rotation process of the rotary table body (D1), an unlocking linkage shaft (D102) also extends out of the rotary table body (D1), and the unlocking linkage shaft (D102) is linked with the unlocking mechanism (E);
The unlocking mechanism (E) comprises an unlocking connecting rod (E1), an unlocking linkage shaft mounting hole (E101) is formed in one end of the unlocking connecting rod (E1), an unlocking linkage shaft (D102) is arranged in the unlocking linkage shaft mounting hole (E101), a linkage boss (E102) is arranged at the other end of the unlocking connecting rod (E1), a button (E2) is arranged in a button groove (C204) of a circuit breaker shell (C2) and can slide, the button (E2) can drive the linkage boss (E102) on the corresponding end of the unlocking connecting rod (E1) to move in the outward sliding process of the button groove (C204), so that a turntable body (D1) is driven to rotate clockwise through the unlocking connecting rod (E1), the button (E2) is separated from the linkage boss (E102) in the inward sliding process of the button groove (C204), and the slider (C1) has a driving force penetrating out of an opening (C2B) under the action of a torsion spring (C3);
or:
The unlocking mechanism (E) comprises an unlocking piece (E3), the middle part of the unlocking piece (E3) is rotationally installed on an unlocking piece installation shaft (C205) on a breaker shell (C2), one end of the unlocking piece (E3) is provided with an unlocking button (E3 a), the other end of the unlocking piece is provided with an unlocking table (E3 b), the unlocking table (E3 b) is in linkage with the turntable mechanism (D), the unlocking button (E3 a) exposes out of the breaker shell (C2) through an opening of the breaker shell (C2), and the unlocking button (E3 a) drives the unlocking piece (E3) to anticlockwise rotate under the action of external force so as to drive the turntable body (D1) to rotate clockwise.
2. The rotary disc type mounting mechanism of a plug-in circuit breaker according to claim 1, wherein: the sliding block (C1) is provided with a limiting part (C103), and the limiting part (C103) is contacted with the circuit breaker shell (C2) to limit the movement stroke of the sliding block (C1).
3. The rotary disc type mounting mechanism of a plug-in circuit breaker according to claim 1, wherein: the sliding block (C1) comprises a first sliding block (C1 a) and a second sliding block (C1 b), and the first sliding block (C1 a) and the second sliding block (C1 b) are respectively positioned on the upper side and the lower side of the circuit breaker shell (C2) and correspond to corresponding sliding block linkage shafts (D101) on the turntable body (D1).
4. The rotary disc type mounting mechanism of a plug-in circuit breaker according to claim 1, wherein: the rotary table body (D1) is extended with an operating table (D103), and the operating table (D103) is linked with an unlocking table (E3 b).
5. The rotary disc type mounting mechanism of a plug-in circuit breaker according to claim 1, wherein: the second torsion spring is arranged on the turntable body (D1) to enable the turntable body (D1) to have a tendency of anticlockwise rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926512.3A CN112582220B (en) | 2019-09-27 | 2019-09-27 | A rotary disc installation mechanism for plug-in circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926512.3A CN112582220B (en) | 2019-09-27 | 2019-09-27 | A rotary disc installation mechanism for plug-in circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN112582220A CN112582220A (en) | 2021-03-30 |
| CN112582220B true CN112582220B (en) | 2024-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910926512.3A Active CN112582220B (en) | 2019-09-27 | 2019-09-27 | A rotary disc installation mechanism for plug-in circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112582223B (en) * | 2019-09-27 | 2024-11-22 | 上海良信电器股份有限公司 | An inclined wedge installation mechanism for plug-in circuit breaker |
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| CN211150440U (en) * | 2019-09-27 | 2020-07-31 | 上海良信电器股份有限公司 | A turntable mounting mechanism for a plug-in circuit breaker |
| CN112582223A (en) * | 2019-09-27 | 2021-03-30 | 上海良信电器股份有限公司 | Wedge type installation mechanism of plug-in circuit breaker |
| CN114068249A (en) * | 2020-07-29 | 2022-02-18 | 上海良信电器股份有限公司 | Torsional spring type mounting mechanism of plug-in circuit breaker |
| CN114068250A (en) * | 2020-07-29 | 2022-02-18 | 上海良信电器股份有限公司 | Oblique slider type mounting mechanism of plug-in circuit breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3408673B2 (en) * | 1995-08-31 | 2003-05-19 | 三菱電機株式会社 | Interlock device for draw-out type circuit breaker |
| JP4153155B2 (en) * | 2000-11-08 | 2008-09-17 | テンパール工業株式会社 | Circuit breaker mounting structure |
| CN107833799B (en) * | 2017-10-26 | 2024-09-20 | 上海良信电器股份有限公司 | A fixing and unlocking mechanism for plug-in circuit breaker |
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2019
- 2019-09-27 CN CN201910926512.3A patent/CN112582220B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211150440U (en) * | 2019-09-27 | 2020-07-31 | 上海良信电器股份有限公司 | A turntable mounting mechanism for a plug-in circuit breaker |
| CN112582223A (en) * | 2019-09-27 | 2021-03-30 | 上海良信电器股份有限公司 | Wedge type installation mechanism of plug-in circuit breaker |
| CN114068249A (en) * | 2020-07-29 | 2022-02-18 | 上海良信电器股份有限公司 | Torsional spring type mounting mechanism of plug-in circuit breaker |
| CN114068250A (en) * | 2020-07-29 | 2022-02-18 | 上海良信电器股份有限公司 | Oblique slider type mounting mechanism of plug-in circuit breaker |
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| CN112582220A (en) | 2021-03-30 |
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