Molded case circuit breaker device with detachable contact

Abstract

The utility model discloses a molded case circuit breaker device with a detachable contact, which relates to the technical field of circuit breakers, and comprises a shell, a contact body is slidably connected outside the shell, a screw is rotatably connected on one surface of the shell close to the contact, and the contact body is provided with a detachable contact. Each protection mechanism comprises a protection cover, a fixing plate, a connecting groove, a limiting plate, a connecting plate and a limiting groove, the protection covers are matched with the limiting plates, when the molded case circuit breaker device is transported, screws on the two sides of the outer shell are rotated to be slightly away from the outer shell, the limiting plates are inserted into the connecting grooves at the moment, and therefore the molded case circuit breaker device is transported. At the moment, the protective cover slides downwards to cover the contact, the fixing plate is connected to the outer portion of the screw in a sliding mode through the connecting groove, the screw is rotated to clamp and fix the fixing plate, at the moment, the protective cover provides protection for the contact after the protective cover is installed, and the probability that the contact is damaged in the transportation process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a molded case circuit breaker device with detachable contacts. Background Art

[0002] Molded case circuit breakers are devices used for long-time delay overload and instantaneous short-circuit operation, and include characteristics such as rated ultimate short-circuit breaking capacity and current limiting breaking capacity.

[0003] At present, there is an existing slot-type molded case circuit breaker (such as patent number: CN209561320U), which discloses a slot-type molded case circuit breaker, including a molded case circuit breaker body, an incoming line conductive contact device, an outgoing line conductive contact device, an incoming line conductive device and an outgoing line conductive device; the incoming line conductive contact device includes an incoming line contact slot and an incoming line contact, and the incoming line contact is connected to the incoming line contact slot; the outgoing line conductive contact device includes an outgoing line contact slot and an outgoing line contact, and the outgoing line contact is connected to the outgoing line contact slot; the incoming line contact and the outgoing line contact are respectively connected to the power line; one end of the incoming line conductive device is fixedly mounted on the incoming line contact of the molded case circuit breaker body; the incoming line conductive device is pluggably arranged in the incoming line contact slot; one end of the outgoing line conductive device is fixedly mounted on the outgoing line contact of the molded case circuit breaker body; the outgoing line conductive device is pluggably arranged in the outgoing line contact slot. The slot-type molded case circuit breaker of the utility model has the advantages of being easy to install, disassemble and repair the molded case circuit breaker and reducing the labor intensity of operators.

[0004] However, during the implementation of the above technical solution, it was found that there were at least the following problems: the contacts were connected to the contact slots and fixed with screws, and the contacts were located outside the entire device. If the contacts collided with other objects during transportation, they were easily damaged. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a molded case circuit breaker device with detachable contacts, which solves the technical problem that the contacts are located outside the entire device and are easily damaged if they collide with other objects during transportation.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A molded case circuit breaker device with detachable contacts comprises a shell, the outside of which is slidably connected with a contact body, a side of the shell close to the contact body is rotatably connected with a screw, both ends of the shell are provided with protective mechanisms, each protective mechanism comprises a protective cover, a fixing plate, a connecting groove, a limiting plate, a connecting plate and a limiting groove, the protective cover is slidably connected to the outside of the contact body, there are two fixing plates, the two fixing plates are fixedly mounted on a side of the protective cover close to the screw, there are two connecting grooves, the two connecting grooves are respectively arranged on the outside of the two fixing plates, the limiting plate is fixedly mounted on a side of the protective cover away from the fixing plate, the connecting plate is arranged on a side of the shell close to the limiting plate, the limiting groove is arranged on the outside of the connecting plate, and the limiting plate is slidably connected to the inside of the limiting groove.

[0010] A rotating shaft is provided on one side of the shell close to each connecting plate, and the connecting plate is rotatably connected to the outside of the rotating shaft. A groove is provided on one side of the shell close to each rotating shaft, and the rotating shaft is fixedly installed in the inside of the groove. A mounting groove is provided in the inside of each groove, and a support shaft is slidably connected in the inside of each mounting groove. The end of the connecting plate away from the rotating shaft is rotatably connected to the outside of the support shaft, a spring is fixedly connected in the inside of each mounting groove, and the support shaft is fixedly connected to the outside of the spring. Built-in grooves are provided at both ends of the inside of each mounting groove, and a built-in plate is slidably connected in the inside of each built-in groove, and the built-in plate is fixedly installed on the outside of the support shaft.

[0011] Preferably, a pull plate is fixedly connected to the outside of each support shaft, and the pull plate is located outside the mounting groove.

[0012] Preferably: a magnetic block is fixedly installed on the outside of each connecting plate, and a built-in iron block is fixedly installed on a side of each groove away from the rotating shaft.

[0013] (III) Beneficial effects

[0014] 1. By setting up a protective cover and cooperating with a limit plate, when transporting the molded case circuit breaker device, turn the screws on both sides of the shell to make the screws slightly away from the shell. At this time, insert the limit plate into the inside of the connecting groove. At this time, slide the protective cover downward so that the protective cover covers the contacts. At this time, the fixing plate is slidably connected to the outside of the screw through the connecting groove. At this time, turn the screw so that the screw clamps the fixing plate. At this time, the protective cover is installed. At this time, the protective cover provides protection for the contacts and reduces the probability of contact damage during transportation.

[0015] 2. By setting a rotating shaft and cooperating with the supporting shaft, when the protective cover is not needed, the connection between the limit plate and the limit groove is released. At this time, the connecting plate is rotated toward the inside of the groove through the rotating shaft and the supporting shaft at both ends of the connecting plate. When the connecting plate is located inside the groove, the magnetic block and the built-in iron block fit together to fix the connecting plate inside the groove. At this time, the connecting plate is fixed inside the groove. At this time, the connecting plate is stored inside the groove to avoid the connecting plate affecting the installation of the molded case circuit breaker device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 For this utility model Figure 1 Structural diagram of the middle shell;

[0019] Figure 3 For this utility model Figure 2 A magnified structural diagram of the middle part;

[0020] Figure 4 For this utility model Figure 1 A cross-sectional structural diagram of the middle groove;

[0021] Figure 5 For this utility model Figure 3 Structural diagram of the connecting plate.

[0022] Legend: 1. Shell; 2. Contact body; 3. Screw; 4. Protective cover; 5. Fixing plate; 6. Connecting groove; 7. Limiting plate; 8. Connecting plate; 9. Limiting groove; 10. Rotating shaft; 11. Groove; 12. Mounting groove; 13. Support shaft; 14. Spring; 15. Built-in groove; 16. Built-in plate; 17. Pull plate; 18. Magnetic block; 19. Built-in iron block. DETAILED DESCRIPTION

[0023] The embodiment of the present application provides a molded case circuit breaker device with detachable contacts, which effectively solves the technical problem that the contacts are located outside the entire device and are easily damaged if they collide with other objects during transportation.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The technical solution in the embodiment of the present application effectively solves the technical problem that the contact is located outside the entire device and is easily damaged if it collides with other objects during transportation. The overall idea is as follows:

[0026] In view of the problems existing in the prior art, the utility model provides a molded case circuit breaker device with detachable contacts, the molded case circuit breaker device with detachable contacts comprises a shell 1, the outside of the shell 1 is slidably connected with a contact body 2, a side of the shell 1 close to the contact body 2 is rotatably connected with a screw 3, both ends of the shell 1 are provided with a protective mechanism, each protective mechanism comprises a protective cover 4, a fixing plate 5, a connecting groove 6, a limiting plate 7, a connecting plate 8 and a limiting groove 9, the protective cover 4 is slidably connected to the outside of the contact body 2, there are two fixing plates 5, the two fixing plates 5 are fixedly installed on the side of the protective cover 4 close to the screw 3, there are two connecting grooves 6, the two connecting grooves 6 are respectively opened on the outside of the two fixing plates 5, the limiting plate 7 is fixedly installed on the side of the protective cover 4 away from the fixing plate 5, the connecting plate 8 is arranged on the side of the shell 1 close to the limiting plate 7, the limiting groove 9 is opened on the outside of the connecting plate 8, and the limiting plate 7 is slidably connected to the inside of the limiting groove 9.

[0027] By setting the protective cover 4 and cooperating with the limit plate 7, when transporting the molded case circuit breaker device, the screws 3 on both sides of the shell 1 are rotated to make the screws 3 slightly away from the shell 1. At this time, the limit plate 7 is inserted into the inside of the connecting groove 6. At this time, the protective cover 4 is slid downward so that the protective cover 4 covers the contacts. At this time, the fixing plate 5 is slidably connected to the outside of the screw 3 through the connecting groove 6. At this time, the screw 3 is rotated so that the screw 3 fixes the fixing plate 5. At this time, the protective cover 4 is installed. At this time, the protective cover 4 provides protection for the contacts, reducing the probability of contact damage during transportation.

[0028] A rotating shaft 10 is provided on one side of the housing 1 close to each connecting plate 8, and the connecting plate 8 is rotatably connected to the outside of the rotating shaft 10 to facilitate the rotation of the connecting plate 8. A groove 11 is provided on one side of the housing 1 close to each rotating shaft 10, and the rotating shaft 10 is fixedly installed inside the groove 11 to facilitate the rotation of the rotating shaft 10. A mounting groove 12 is provided inside each groove 11, and a support shaft 13 is slidably connected inside each mounting groove 12. One end of the connecting plate 8 away from the rotating shaft 10 is rotatably connected to the outside of the support shaft 13, and the support shaft 13 is pulled to release the connection between the support shaft 13 and the connecting plate 8, so as to facilitate the disassembly of the connecting plate 8. A spring 14 is fixedly connected inside each of the mounting grooves 12. The support shaft 13 is fixedly connected to the outside of the spring 14 to facilitate support for the support shaft 13. Built-in grooves 15 are opened at both ends of each mounting groove 12. A built-in plate 16 is slidably connected to the inside of each built-in groove 15. The built-in plate 16 is fixedly installed on the outside of the support shaft 13 to prevent the support shaft 13 from being disconnected from the mounting groove 12. A pull plate 17 is fixedly connected to the outside of each support shaft 13. The pull plate 17 is located on the outside of the mounting groove 12 to facilitate pulling the support shaft 13. A magnetic block 18 is fixedly installed on the outside of each connecting plate 8. A built-in iron block 19 is fixedly installed on the side of each groove 11 away from the rotating shaft 10 to facilitate fixing the connecting plate 8 inside the groove 11.

[0029] By setting the rotating shaft 10 and cooperating with the supporting shaft 13, when the protective cover 4 is not needed, the connection between the limit plate 7 and the limit groove 9 is released. At this time, the connecting plate 8 rotates toward the inside of the groove 11 through the rotating shaft 10 and the supporting shaft 13 at both ends of the connecting plate 8. When the connecting plate 8 is located inside the groove 11, the magnetic block 18 and the built-in iron block 19 fit each other to fix the connecting plate 8 inside the groove 11. At this time, the connecting plate 8 is fixed inside the groove 11. At this time, the connecting plate 8 is stored inside the groove 11 to prevent the connecting plate 8 from affecting the installation of the molded case circuit breaker device.

[0030] Working principle:

[0031] The first step is to push the support shaft 13 so that the support shaft 13 partially enters the interior of the installation groove 12. At this time, the spring 14 is compressed. At this time, one end of the connecting plate 8 is slidably connected to the outside of the rotating shaft 10. At this time, the support shaft 13 is released. Under the action of the spring 14, the support shaft 13 is slidably connected to the outside of the rotating shaft 10. At this time, the connecting plate 8 is installed;

[0032] The second step is to set the protective cover 4 and cooperate with the limit plate 7. When transporting the molded case circuit breaker device, rotate the screws 3 on both sides of the shell 1 to make the screws 3 slightly away from the shell 1. At this time, insert the limit plate 7 into the connecting groove 6. At this time, slide the protective cover 4 downward so that the protective cover 4 covers the contact. At this time, the fixing plate 5 is slidably connected to the outside of the screw 3 through the connecting groove 6. At this time, rotate the screw 3 so that the screw 3 fixes the fixing plate 5. At this time, the protective cover 4 is installed. When the protective cover 4 is not needed, the connection between the limit plate 7 and the limit groove 9 is released. At this time, the connecting plate 8 is rotated toward the inside of the groove 11 through the rotating shaft 10 and the support shaft 13 at both ends of the connecting plate 8. When the connecting plate 8 is located inside the groove 11, the magnetic block 18 and the built-in iron block 19 fit each other to fix the connecting plate 8 inside the groove 11. At this time, the connecting plate 8 is fixed inside the groove 11. At this time, the connecting plate 8 is received inside the groove 11 to prevent the connecting plate 8 from affecting the installation of the molded case circuit breaker device.

[0033] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A molded case circuit breaker device with detachable contacts, comprising a housing (1), a contact body (2) being slidably connected to the outside of the housing (1), and a screw (3) being rotatably connected to a side of the housing (1) close to the contact body (2), wherein: Both ends of the housing (1) are provided with protective mechanisms; Each protective mechanism comprises a protective cover (4), a fixing plate (5), a connecting groove (6), a limiting plate (7), a connecting plate (8) and a limiting groove (9); The protective cover (4) is slidably connected to the outside of the contact body (2); there are two fixing plates (5), which are fixedly mounted on a side of the protective cover (4) close to the screw (3); there are two connecting grooves (6), which are respectively arranged on the outside of the two fixing plates (5); a limiting plate (7) is fixedly mounted on a side of the protective cover (4) away from the fixing plate (5); a connecting plate (8) is arranged on a side of the housing (1) close to the limiting plate (7); a limiting groove (9) is arranged on the outside of the connecting plate (8), and the limiting plate (7) is slidably connected to the inside of the limiting groove (9).

2. A molded case circuit breaker device with detachable contacts as claimed in claim 1, characterized in that: A rotating shaft (10) is provided on one side of the housing (1) close to each connecting plate (8); The connecting plate (8) is rotatably connected to the outside of the rotating shaft (10).

3. A molded case circuit breaker device with detachable contacts as claimed in claim 2, characterized in that: A groove (11) is formed on one side of the housing (1) close to each rotating shaft (10); The rotating shaft (10) is fixedly installed inside the groove (11).

4. A molded case circuit breaker device with detachable contacts as claimed in claim 3, characterized in that: Each of the grooves (11) is provided with a mounting groove (12), and each mounting groove (12) is slidably connected with a support shaft (13); One end of the connecting plate (8) away from the rotating shaft (10) is rotatably connected to the outside of the supporting shaft (13).

5. A molded case circuit breaker device with detachable contacts as claimed in claim 4, characterized in that: A spring (14) is fixedly connected inside each of the installation grooves (12); The support shaft (13) is fixedly connected to the outside of the spring (14).

6. A molded case circuit breaker device with detachable contacts as claimed in claim 4, characterized in that: Both ends of each of the installation grooves (12) are provided with built-in grooves (15), and each built-in groove (15) is slidably connected with a built-in plate (16); The built-in plate (16) is fixedly mounted on the outside of the support shaft (13).

7. A molded case circuit breaker device with detachable contacts as claimed in claim 4, characterized in that: The outside of each support shaft (13) is fixedly connected with a pull plate (17); The pull plate (17) is located outside the installation groove (12).

8. A molded case circuit breaker device with detachable contacts as claimed in claim 1, characterized in that: A magnetic attraction block (18) is fixedly mounted on the outside of each connecting plate (8); A built-in iron block (19) is fixedly mounted on a side of each groove (11) away from the rotating shaft (10).

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