CN222214081U - Plastic case circuit breaker - Google Patents
Plastic case circuit breaker Download PDFInfo
- Publication number
- CN222214081U CN222214081U CN202420741039.8U CN202420741039U CN222214081U CN 222214081 U CN222214081 U CN 222214081U CN 202420741039 U CN202420741039 U CN 202420741039U CN 222214081 U CN222214081 U CN 222214081U
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- circuit breaker
- adjusting rod
- breaker shell
- shell
- installation seat
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Abstract
The utility model provides a molded case circuit breaker, which relates to the field of circuit breakers and comprises a circuit breaker shell, a contact system and an arc extinguishing system arranged in the circuit breaker shell, wherein the contact system is connected with the arc extinguishing system, an installation seat is further arranged outside the circuit breaker shell, the circuit breaker shell and the installation seat are clamped by a buckle, a supporting component for supporting the circuit breaker shell is further arranged at the bottom of the installation seat, the supporting component comprises an adjusting rod and a split-type detachable elastic clamping piece, two ends of the elastic clamping piece are fixedly connected with the circuit breaker shell and the adjusting rod respectively, the other end of the adjusting rod passes through the bottom of the installation seat and is in threaded fit with an adjusting cap, a gap is reserved between the outer surface of the adjusting rod and the inner wall of the installation seat, the adjusting rod is clamped in the elastic clamping piece, the adjusting cap is rotated again to be attached to the bottom wall of the installation seat, and then the adjusting rod is not moved any more, so that the fixed support of the circuit breaker shell is completed, the supporting effect of the circuit breaker shell is further improved, and the circuit breaker is prevented from being loose due to impact.
Description
Technical Field
The utility model relates to the field of circuit breakers, in particular to a molded case circuit breaker.
Background
The molded case circuit breaker is a common protection electrical appliance, has the functions of switching on and off load current and overload and short-circuit protection on the load current, and is widely applied to overload and short-circuit protection of various power distribution systems and motors;
In practical application, moulded case circuit breaker includes circuit breaker casing, contact system and arc extinguishing system, specifically, static contact piece below in the contact system sets up the magnetic conduction sheet, when moving, static contact is closed or the disconnection, lorentz force pulls the arc into the explosion chamber of top arc extinguishing system fast, long arc is cut apart into short electric arc by the arc extinguishing bars inter-plate fast, and then reach the purpose that the electric arc extinguished, and can block circuit breaker casing on the mount pad through the mode block of buckle during actual installation, partial structure is in unsettled maintenance of being convenient for in the circuit breaker casing, when the circuit breaker casing receives the collision, the mount pad that supports circuit breaker casing and the static contact of arc extinguishing system loosen easily, lead to the whole loose condition of circuit breaker.
Accordingly, there is a need to provide a new molded case circuit breaker that solves the above-mentioned technical problems.
Disclosure of utility model
In order to solve the technical problems that when a breaker shell is collided, a mounting seat supporting the breaker shell and a static contact piece of an arc extinguishing system are easy to loosen, so that the whole breaker is loose, and the arc extinguishing system is easy to fail, the utility model provides a molded case breaker.
The utility model provides a molded case circuit breaker which comprises a circuit breaker shell, a contact system and an arc extinguishing system arranged in the circuit breaker shell, wherein the contact system is connected with the arc extinguishing system, an installation seat is further arranged outside the circuit breaker shell, the circuit breaker shell and the installation seat are clamped through a buckle, and a supporting component for supporting the circuit breaker shell is further arranged at the bottom of the installation seat;
The support assembly comprises an adjusting rod and a split-type detachable elastic clamping piece, wherein two ends of the elastic clamping piece are respectively fixedly connected with the circuit breaker shell and the adjusting rod, the other end of the adjusting rod penetrates through the bottom of the mounting seat and is in threaded fit with an adjusting cap, and a gap is reserved between the outer surface of the adjusting rod and the inner wall of the mounting seat.
Further, the elastic clamping piece comprises a driving head, a connecting cylinder and an elastic telescopic piece positioned inside the connecting cylinder, wherein the driving head is fixedly connected with one end of the adjusting rod, the other end of the driving head penetrates into the connecting cylinder and is attached to the elastic telescopic piece, a positioning column is arranged on the outer surface of the driving head, an arc-shaped groove for sliding the positioning column is formed in the outer surface of the connecting cylinder, a barb-shaped fixing groove is further communicated with the bottom of the arc-shaped groove, a connecting plate is fixed to the outer surface of the connecting cylinder, and the connecting plate is fixedly connected with the outer side of the circuit breaker shell.
Further, the connecting cylinder comprises a mounting sleeve and a connecting sleeve, the mounting sleeve is in threaded fit with the connecting sleeve, the outer side of the mounting sleeve is fixedly connected with the connecting plate, and the arc-shaped groove is formed in the connecting sleeve.
Further, the elastic expansion piece comprises a pressing block, a spring and a movable rod, one end of the pressing block is attached to the driving head, the other end of the pressing block is fixedly connected with the movable rod, the spring is sleeved on the outer surface of the movable rod, two ends of the spring are attached to the bottom wall of the inner cavity of the connecting sleeve respectively, and one end, away from the pressing block, of the movable rod penetrates through the connecting sleeve.
Further, a communication groove for the contact system to pass through is formed in the outer side of the mounting seat.
Further, the outer surface of the adjusting cap is also provided with anti-skid patterns.
Further, a plurality of lead frames are equidistantly arranged at the top of the mounting seat, the lead frames correspond to the wiring end positions of the circuit breaker shell, a wire clamping plate used for fixing a cable is arranged in each lead frame, and an identification block used for identifying a power supply line is arranged at the top of each lead frame.
Compared with the related art, the molded case circuit breaker provided by the utility model has the following beneficial effects:
Firstly, adjust the pole accessible elasticity fastener and be connected with the circuit breaker casing, will adjust the pole card in the elasticity fastener, rotate again and adjust the cap and make its laminating in the mount pad diapire, adjust the pole no longer movable this moment, accomplish the fixed stay to the circuit breaker casing, further improve the supporting effect of circuit breaker casing, prevent that the circuit breaker from receiving the condition that the impact leads to becoming flexible.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a molded case circuit breaker according to the present utility model;
fig. 2 is a schematic diagram of the overall structure of the molded case circuit breaker according to the present utility model;
FIG. 3 is a schematic view of a support assembly according to the present utility model;
FIG. 4 is a schematic diagram of a second embodiment of a support assembly according to the present utility model;
FIG. 5 is a schematic diagram of a support assembly according to the present utility model;
Fig. 6 is a schematic structural diagram of a lead frame according to the present utility model.
Reference numeral 1 in the figure, a breaker housing; 2, a contact system, 3, a mounting seat, 4, an adjusting rod, 5, an adjusting cap, 6, a driving head, 7, a positioning column, 8, an arc-shaped groove, 9, a fixed groove, 10, a connecting plate, 11, a mounting sleeve, 12, a connecting sleeve, 13, a pressing block, 14, a spring, 15, a movable rod, 16, a communicating groove, 17, a lead frame, 18, a wire clamping plate, 19 and a marking block.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination, fig. 1 is a schematic diagram of an overall structure of a molded case circuit breaker provided by the present utility model, fig. 2 is a schematic diagram of an overall structure of a molded case circuit breaker provided by the present utility model, fig. 3 is a schematic diagram of a supporting component provided by the present utility model, fig. 4 is a schematic diagram of a supporting component provided by the present utility model, fig. 5 is a schematic diagram of a supporting component provided by the present utility model, and fig. 6 is a schematic diagram of a lead frame provided by the present utility model.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In a specific implementation process, as shown in fig. 1-5, the molded case circuit breaker comprises a circuit breaker shell 1, a contact system 2 and an arc extinguishing system arranged in the circuit breaker shell 1, wherein the contact system 2 is connected with the arc extinguishing system, a communication groove 16 for the contact system 2 to pass through is formed in the outer side of a mounting seat 3, a mounting seat 3 is further arranged on the outer side of the circuit breaker shell 1, the circuit breaker shell 1 is clamped with the mounting seat 3 through a buckle, and a supporting component for supporting the circuit breaker shell 1 is further arranged at the bottom of the mounting seat 3;
It should be noted that, as mentioned in the background art, the arc extinguishing system and the contact system 2 adopt a conventional magnetic quenching technique, wherein the arc is elongated and accelerated to be diffused by using magnetic field force, so as to realize arc extinction, and the technique is often applied to large-scale high-voltage switch equipment, so that redundant description is not made here;
The support assembly comprises an adjusting rod 4 and a split-type detachable elastic clamping piece, two ends of the elastic clamping piece are fixedly connected with the breaker shell 1 and the adjusting rod 4 respectively, the other end of the adjusting rod 4 penetrates through the bottom of the mounting seat 3 and is in threaded fit with an adjusting cap 5, anti-skidding threads are further formed on the outer surface of the adjusting cap 5, a gap is formed between the outer surface of the adjusting rod 4 and the inner wall of the mounting seat, firstly the adjusting rod 4 can be connected with the breaker shell 1 through the elastic clamping piece, the adjusting rod 4 is clamped in the elastic clamping piece, the adjusting cap 5 is rotated to be attached to the bottom wall of the mounting seat 3, at the moment, the adjusting rod 4 is not moved any more, the fixed support of the breaker shell 1 is completed, the supporting effect of the breaker shell 1 is further improved, and the condition that the breaker is loose due to impact is prevented;
The elastic clamping piece comprises a driving head 6, a connecting cylinder and an elastic telescopic piece positioned in the connecting cylinder, wherein the driving head 6 is fixedly connected with one end of an adjusting rod 4, the other end of the driving head 6 penetrates into the connecting cylinder and is attached to the elastic telescopic piece, a positioning column 7 is arranged on the outer surface of the driving head 6, an arc-shaped groove 8 for sliding of the positioning column 7 is formed in the outer surface of the connecting cylinder, an inverted hook-shaped fixing groove 9 is further communicated with the bottom of the arc-shaped groove 8, a connecting plate 10 is fixedly connected with the outer side of the circuit breaker shell 1, the connecting cylinder comprises a mounting sleeve 11 and a connecting sleeve 12, the mounting sleeve 11 is in threaded fit with the connecting sleeve 12, the outer side of the mounting sleeve 11 is fixedly connected with the connecting plate 10, the arc-shaped groove 8 is formed in the connecting sleeve 12, one end of the driving head 6 is inserted into the connecting sleeve 12 and the positioning column 7 moves along the direction of the arc-shaped groove 8, the driving head 6 extrudes the elastic telescopic piece to shrink, and when the positioning column 7 moves to the bottom of the arc-shaped groove 8, the positioning column 7 is driven by the elasticity of the elastic telescopic piece to clamp the positioning column 7 in the fixing groove 9, and the clamping installation of the driving head 6 is completed;
the elastic expansion piece comprises a pressing block 13, a spring 14 and a movable rod 15, one end of the pressing block 13 is attached to the driving head 6, the other end of the pressing block 13 is fixedly connected with the movable rod 15, the spring 14 is sleeved on the outer surface of the movable rod 15, two ends of the spring 14 are attached to the bottom wall of an inner cavity of a connecting sleeve 12 of the pressing block 13 respectively, one end, far away from the pressing block 13, of the movable rod 15 penetrates through the connecting sleeve 12, the driving head 6 extrudes the pressing block 13, when the pressing block 13 is extruded, the spring 14 is compressed, the movable rod 15 penetrates out of the bottom of the connecting sleeve 12, and in contrast, the rebound force of the spring 14 drives the pressing block 13 to reset.
Referring to fig. 6, a plurality of lead frames 17 are equidistantly arranged at the top of the mounting base 3, the lead frames 17 correspond to the terminal positions of the circuit breaker housing 1, a wire clamping plate 18 for fixing cables is arranged in the lead frames 17, an identification block 19 for identifying power supply lines is arranged at the top of the lead frames 17, and the wire clamping plate 18 can be used for conveniently fixing the connecting cables.
The working principle of the utility model is that firstly, the adjusting rod 4 can be connected with the breaker shell 1 through the elastic clamping piece, the adjusting rod 4 is clamped in the elastic clamping piece, then the adjusting cap 5 is rotated to be attached to the bottom wall of the mounting seat 3, at the moment, the adjusting rod 4 is not movable any more, the fixed support of the breaker shell 1 is completed, the supporting effect of the breaker shell 1 is further improved, and the condition that the breaker is loosened due to impact is prevented;
The clamping and disassembling mode of the elastic clamping piece is that one end of the driving head 6 is inserted into the connecting sleeve 12, the positioning column 7 moves along the direction of the arc-shaped groove 8, at the moment, the driving head 6 extrudes the elastic telescopic piece to shrink, when the positioning column 7 moves to the bottom of the arc-shaped groove 8, the positioning column 7 is driven to be clamped in the fixing groove 9 through the elastic force of the elastic telescopic piece, the clamping and assembling of the driving head 6 are completed, the adjusting cap 5 is screwed to be attached to the bottom wall of the mounting seat 3, the adjusting rod 4 is not moved at the moment, and conversely, when the adjusting rod 4 is disassembled, a gap is reserved between the adjusting cap 5 and the bottom wall of the mounting seat 3, the adjusting rod 4 is pushed to enable the driving head 6 to extrude the elastic telescopic piece to shrink, the positioning column 7 moves out of the fixing groove 9 and is driven by the elastic telescopic piece to rotate and reset along the arc-shaped groove 8, and the driving head 6 can be taken out.
The circuits and control involved in the present utility model are all of the prior art, and are not described in detail herein.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The plastic-case circuit breaker comprises a circuit breaker shell (1), a contact system (2) and an arc extinguishing system arranged in the circuit breaker shell (1), wherein the contact system (2) is connected with the arc extinguishing system, an installation seat (3) is further arranged outside the circuit breaker shell (1), and the circuit breaker shell (1) and the installation seat (3) are clamped through a buckle, and the plastic-case circuit breaker is characterized in that a supporting component for supporting the circuit breaker shell (1) is further arranged at the bottom of the installation seat (3);
the support assembly comprises an adjusting rod (4) and a split-type detachable elastic clamping piece, wherein two ends of the elastic clamping piece are respectively fixedly connected with the circuit breaker shell (1) and the adjusting rod (4), the other end of the adjusting rod (4) penetrates through the bottom of the mounting seat (3) and is in threaded fit with an adjusting cap (5), and a gap is reserved between the outer surface of the adjusting rod (4) and the inner wall of the mounting seat (3).
2. The molded case circuit breaker according to claim 1, wherein the elastic clamping piece comprises a driving head (6), a connecting cylinder and an elastic telescopic piece positioned inside the connecting cylinder, the driving head (6) is fixedly connected with one end of the adjusting rod (4), the other end of the driving head (6) penetrates into the connecting cylinder and is attached to the elastic telescopic piece, a positioning column (7) is arranged on the outer surface of the driving head (6), an arc-shaped groove (8) for sliding the positioning column (7) is formed in the outer surface of the connecting cylinder, an inverted hook-shaped fixing groove (9) is further communicated with the bottom of the arc-shaped groove (8), a connecting plate (10) is fixedly arranged on the outer surface of the connecting cylinder, and the connecting plate (10) is fixedly connected with the outer side of the circuit breaker shell (1).
3. The molded case circuit breaker according to claim 2, wherein the connecting cylinder comprises a mounting sleeve (11) and a connecting sleeve (12), the mounting sleeve (11) is in threaded fit with the connecting sleeve (12), the outer side of the mounting sleeve (11) is fixedly connected with the connecting plate (10), and the arc-shaped groove (8) is formed in the connecting sleeve (12).
4. A molded case circuit breaker according to claim 3, wherein the elastic telescopic member comprises a pressing block (13), a spring (14) and a movable rod (15), one end of the pressing block (13) is attached to the driving head (6), the other end of the pressing block (13) is fixedly connected with the movable rod (15), the spring (14) is sleeved on the outer surface of the movable rod (15), two ends of the spring (14) are attached to the bottom wall of the inner cavity of the connecting sleeve (12) of the pressing block (13), and one end, far away from the pressing block (13), of the movable rod (15) penetrates through the connecting sleeve (12).
5. The molded case circuit breaker according to claim 4, wherein a communication groove (16) through which the contact system (2) passes is opened at the outer side of the mounting base (3).
6. The molded case circuit breaker according to claim 5, wherein the outer surface of the adjustment cap (5) is further provided with anti-slip patterns.
7. The molded case circuit breaker according to claim 6, wherein a plurality of lead frames (17) are equidistantly arranged on the top of the mounting base (3), the lead frames (17) correspond to the terminal positions of the circuit breaker housing (1), a wire clamping plate (18) for fixing a cable is arranged in the lead frames (17), and an identification block (19) for identifying a power supply line is arranged on the top of the lead frames (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420741039.8U CN222214081U (en) | 2024-04-11 | 2024-04-11 | Plastic case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420741039.8U CN222214081U (en) | 2024-04-11 | 2024-04-11 | Plastic case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222214081U true CN222214081U (en) | 2024-12-20 |
Family
ID=93860802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420741039.8U Active CN222214081U (en) | 2024-04-11 | 2024-04-11 | Plastic case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222214081U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120527200A (en) * | 2025-05-22 | 2025-08-22 | 浙江华昌电气有限公司 | A molded case circuit breaker |
-
2024
- 2024-04-11 CN CN202420741039.8U patent/CN222214081U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120527200A (en) * | 2025-05-22 | 2025-08-22 | 浙江华昌电气有限公司 | A molded case circuit breaker |
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