Microswitch indicating mechanism of molded case circuit breaker

Abstract

The utility model discloses a microswitch indicating mechanism of a molded case circuit breaker, which comprises a shell and an operating mechanism arranged in the shell. The operating mechanism comprises a handle, a linkage frame arranged below the handle and linked with the handle, two installation side frames arranged on the two sides of the linkage frame and used for being rotationally connected with the linkage frame, a swing frame arranged between the two installation side frames, and an elastic piece connected between the swing frame and the linkage frame. The shaft body rotationally penetrates through the two mounting side frames and is in linkage with the swing frame, the rotating shaft block is arranged below the swing frame and is in linkage with the swing frame, a shifting block is arranged at the position, extending out of one mounting side frame, of the shaft body in a linkage mode, a first microswitch is arranged on one side of the shifting block, and an abutting part is arranged on the rotating shaft block; a second microswitch is arranged on one side of the abutting part. According to the utility model, the two microswitches can be matched through the shifting block, the rotating shaft block and the abutting part, so that feedback of closing, opening or free tripping states is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field more particularly, relate to a microswitch indicating mechanism of moulded case circuit breaker. BACKGROUND

[0002] The operating mechanism of the existing circuit breaker, as the core execution component of the circuit breaker, plays a vital role in the circuit. A reliable operating mechanism can timely close, carry and break the current under normal circuit conditions, and can close, carry and break abnormal circuits within a specified time to implement reliable tripping, closing and tripping actions.

[0003] When the circuit breaker is in the corresponding tripping, opening or tripping state, the above signals need to be fed back through the line board arranged inside the circuit breaker. Usually, the state change signal is transmitted through the microswitch connected with the line board signal. The on-off control of the microswitch needs to be realized by the corresponding linkage mechanism arranged inside the circuit breaker. Therefore, additional components are needed, which requires reserved installation space inside the circuit breaker, increases the overall structure size, and increases the production cost. UTILITY MODEL CONTENT

[0004] The utility model overcomes the deficiency of prior art, its structure design is reasonable, through the abutment of the dial block and the pivot block, two microswitches can be matched, so that the feedback of the closing, opening or free tripping state is realized. No other complex linkage mechanism is needed, the production cost is reduced, and the internal structure is more compact.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A microswitch indicating mechanism of moulded case circuit breaker, including the casing and the operating mechanism arranged in the casing, the operating mechanism includes handle, the linkage frame arranged below the handle and linked with the handle, two installation side frames arranged on both sides of the linkage frame and rotatably connected with the linkage frame, the swing frame arranged between the two installation side frames, the elastic piece connected between the swing frame and the linkage frame, the shaft body rotatably arranged on the two installation side frames and linked with the swing frame, and the pivot block arranged below the swing frame and linked with the swing frame, the position of the shaft body protruding from one of the installation side frames is linked with the dial block, one side of the dial block is provided with the first microswitch, the shaft body rotation drives the dial block to move and makes the dial block abut or separate with the first microswitch, the pivot block is provided with the abutment, one side of the abutment is provided with the second microswitch, the pivot block rotation drives the abutment to move and makes the abutment abut or separate with the second microswitch.

[0007] By adopting the technical scheme, the handle or other components such as a slider is driven to act, and the linkage of the components of the operating mechanism is matched, so that the opening, closing and free tripping of the molded case circuit breaker can be realized. The first micro switch and the second micro switch are arranged, the first micro switch and the second micro switch are electrically connected with the circuit board arranged in the shell, when the dial block abuts against the first micro switch, the first micro switch is closed, when the dial block is separated from the first micro switch, the first micro switch is opened; similarly, when the abutting portion abuts against the second micro switch, the second micro switch is closed, when the abutting portion is separated from the second micro switch, the second micro switch is opened. Specifically, one of the signal feedback combinations can be that when the first micro switch and the second micro switch are both closed, the circuit board feeds back an opening signal state; when the first micro switch is closed and the second micro switch is opened, the closing signal state is fed back at this time; when the first micro switch is opened and the second micro switch is closed, the free tripping signal state is fed back at this time. Since the present scheme directly improves the existing operating mechanism, the dial block is arranged, and the positions of the first micro switch and the second micro switch are reasonably arranged, the dial block, the rotating shaft block and the abutting portion can be matched with the two micro switches, so that the feedback of the closing, opening or free tripping state is realized, other relatively complex linkage mechanisms do not need to be added, the production manufacturing cost is reduced, and the internal structure is more compact.

[0008] Preferably, the shell comprises a base and a middle frame, the operating mechanism is located between the base and the middle frame, the handle is arranged to pass through the middle frame in a direction away from the base, and the mounting side frame is fixedly connected to the base.

[0009] By adopting the technical scheme, the connection stability of the mounting side frame is ensured, and the operating mechanism is located between the base and the middle frame, so that the base and the middle frame can well protect the components of the operating mechanism.

[0010] Preferably, the middle frame is fixedly connected with a first mounting plate, and the first micro switch is fixedly installed on the middle frame through the first mounting plate.

[0011] By adopting the technical scheme, the first micro switch is fixed on the first mounting plate, and then the first mounting plate is fixed on the middle frame through the screw.

[0012] Preferably, the middle frame is fixedly connected with a second mounting plate, the second micro switch is fixedly installed on the middle frame through the second mounting plate, and the second micro switch is located above the abutting portion; or the second micro switch is fixedly installed on the base through the second mounting plate, and the second micro switch is located below the abutting portion.

[0013] By adopting the technical scheme, as long as the abutting portion can abut against or separate from the second microswitch when the rotating shaft block rotates, the abutting portion can abut against or separate from the second microswitch.

[0014] Preferably, the mounting side frame is provided with a receiving groove, and the linkage frame has an insertion portion inserted into the receiving groove and rotationally matched with the receiving groove.

[0015] By adopting the technical scheme, the linkage frame can rotate relative to the mounting side frame, so that the linkage frame drives the swing frame to move through the elastic member, and the swing frame drives the shaft body and the rotating shaft block to move.

[0016] Preferably, the linkage frame is integrally formed with a plug above the insertion portion, the mounting side frame is provided with two cross rods above the receiving groove, the two cross rods are provided with two convex rods opposite to each other, and the two convex rods form a plug space for the plug and the insertion portion.

[0017] By adopting the technical scheme, the two cross rods and the plug space can facilitate the plug to be inserted, so that the rotation stability of the insertion portion in the receiving groove is better ensured.

[0018] Preferably, the part of the shaft body protruding from the mounting side frame is a flat connecting portion, and the dial block is provided with a slot matched with the flat connecting portion.

[0019] By adopting the technical scheme, the flat connecting portion and the slot are matched, so that the dial block can be assembled on the end of the shaft body, thereby realizing the linkage of the dial block and the shaft body. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of a specific embodiment of the utility model;

[0021] Figure 2 is a partial structural schematic view of a specific embodiment of the utility model reflecting an operating mechanism;

[0022] Figure 3 is a structural schematic view of a specific embodiment of the utility model reflecting a linkage frame;

[0023] Figure 4 is a structural schematic view of a specific embodiment of the utility model reflecting a mounting side frame;

[0024] Figure 5 is a structural schematic view of a specific embodiment of the utility model reflecting a rotating shaft block;

[0025] Figure 6 is a structural schematic view of a specific embodiment of the utility model reflecting a shaft body and a dial block;

[0026] Figure 7The utility model discloses a structure schematic view of the shell of the specific embodiment.

[0027] In the figure: 1, shell;11, base;12, middle frame;13, first mounting plate;14, second mounting plate;2, operating mechanism;21, handle;22, linkage frame;221, insertion part;222, insertion foot;23, mounting side frame;231, containing groove;232, crossbar;233, plug-in space;24, swing frame;25, elastic member;26, shaft body;261, flat connecting part;27, rotating shaft block;3, push block;31, insertion slot;4, first micro switch;5, abutting part;6, second micro switch. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] As Figures 1-7 shown, a kind of micro switch indicating mechanism of molded case circuit breaker, including shell 1 and being located in the operating mechanism 2 of shell 1 in shell 1, operating mechanism 2 includes handle 21, be located in the linkage frame 22 of handle 21 below and be linked with handle 21, be located in the two installation side frames 23 of linkage frame 22 both sides and be connected with linkage frame 22 rotation two installation side frames 23, swing frame 24 is arranged between the two installation side frames 23, is connected between linkage frame 22 and swing frame 24 elastic member 25, rotation is arranged on the two installation side frames 23 and is connected with swing frame 24 shaft body 26 and rotating shaft block 27 are arranged in the lower side of swing frame 24 and are connected with swing frame 24, the position of one of installation side frame 23 that shaft body 26 protrudes linkage is provided with push block 3, one side of push block 3 is provided with first micro switch 4, shaft body 26 rotation drives push block 3 and makes push block 3 and first micro switch 4 abut or separate cooperation, rotating shaft block 27 is provided with abutting part 5, one side of abutting part 5 is provided with second micro switch 6, rotating shaft block 27 drives abutting part 5 and makes abutting part 5 and second micro switch 6 abut or separate cooperation.

[0030] By adopting the technical scheme, the handle 21 or other components such as a slider and the like drives the handle 21 to act, and the linkage of the components of the operating mechanism 2 is matched, so that the opening, closing and free tripping of the molded case circuit breaker can be realized. The first micro switch 4 and the second micro switch 6 are electrically connected with the circuit board arranged in the shell 1. When the dial block 3 abuts against the first micro switch 4, the first micro switch 4 is closed. When the dial block 3 is separated from the first micro switch 4, the first micro switch 4 is opened. Similarly, when the abutting portion 5 abuts against the second micro switch 6, the second micro switch 6 is closed. When the abutting portion 5 is separated from the second micro switch 6, the second micro switch 6 is opened. Specifically, one of the signal feedback combinations can be that when the first micro switch 4 and the second micro switch 6 are both closed, the circuit board feeds back an opening signal state. When the first micro switch 4 is closed and the second micro switch 6 is opened, a closing signal state is fed back at this time. When the first micro switch 4 is opened and the second micro switch 6 is closed, a free tripping signal state is fed back at this time. Since the present scheme directly improves the existing operating mechanism 2, the dial block 3 is arranged, and the positions of the first micro switch 4 and the second micro switch 6 are reasonably arranged. The dial block 3, the shaft block 27 and the abutting portion 5 can be matched with the two micro switches, so that the feedback of the closing, opening or free tripping state can be realized, without adding other relatively complex linkage mechanisms, the production cost is reduced, and the internal structure is more compact.

[0031] Furthermore, the shell 1 comprises a base 11 and a middle frame 12, the operating mechanism 2 is located between the base 11 and the middle frame 12, the handle 21 is arranged to pass through the middle frame 12 in a direction away from the base 11, and the mounting side frame 23 is fixedly connected to the base 11. In this way, the connection stability of the mounting side frame 23 is ensured, and the operating mechanism 2 is located between the base 11 and the middle frame 12, so that the base 11 and the middle frame 12 can well protect the components of the operating mechanism 2.

[0032] The first mounting plate 13 is fixedly connected to the middle frame 12, and the first micro switch 4 is fixedly installed on the middle frame 12 through the first mounting plate 13. Specifically, the first micro switch 4 is fixed to the first mounting plate 13, and then the first mounting plate 13 is fixed to the middle frame 12 through a screw.

[0033] The second mounting plate 14 is fixedly connected to the middle frame 12, and the second micro switch 6 is fixedly installed on the middle frame 12 through the second mounting plate 14. The second micro switch 6 is located above the abutting portion 5. Alternatively, the second micro switch 6 is fixedly installed on the base 11 through the second mounting plate 14, and the second micro switch 6 is located below the abutting portion 5. In this way, as long as the abutting portion 5 can abut against or be separated from the second micro switch 6 when the shaft block 27 rotates, the arrangement is reasonable.

[0034] And, the mounting side frame 23 is provided with a receiving groove 231, and the linkage frame 22 is provided with an insertion part 221 which is inserted into the receiving groove 231 and is rotationally matched with the receiving groove 231. In this way, the rotation of the linkage frame 22 relative to the mounting side frame 23 is realized, so that the linkage frame 22 drives the swing frame 24 to move through the elastic member 25, and the swing frame 24 drives the shaft body 26 and the rotating shaft block 27 to move.

[0035] In addition, the linkage frame 22 is integrally formed with a plug 222 above the insertion part 221, and the mounting side frame 23 is provided with two cross bars 232 above the receiving groove 231, and the two cross bars 232 are provided with two convex rods which are opposite to each other, and the two convex rods form an insertion space 233 for the plug 222 and the insertion part 221. The two cross bars 232 and the insertion space 233 are arranged to facilitate the insertion of the plug 222, so as to better ensure the rotation stability of the insertion part 221 in the receiving groove 231.

[0036] Further, the part of the shaft body 26 which extends out of the mounting side frame 23 is a flat connecting part 261, and the dial block 3 is provided with a slot 31 which is matched with the flat connecting part 261. The matched arrangement of the flat connecting part 261 and the slot 31 can realize the sleeving assembly of the dial block 3 on the end of the shaft body 26, so as to realize the linkage matching of the dial block 3 and the shaft body 26.

[0037] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A microswitch indicating mechanism of a molded case circuit breaker comprising a housing (1) and an operating mechanism (2) provided in the housing (1), characterized in that, The operating mechanism (2) comprises a handle (21), a linkage frame (22) arranged below the handle (21) and linked with the handle (21), two mounting side frames (23) arranged on both sides of the linkage frame (22) and rotationally connected with the linkage frame (22), a swing frame (24) arranged between the two mounting side frames (23), an elastic member (25) connected between the swing frame (24) and the linkage frame (22), a shaft body (26) rotationally arranged on the two mounting side frames (23) and linked with the swing frame (24), and a rotating shaft block (27) arranged below the swing frame (24) and linked with the swing frame (24), a pushing block (3) is arranged on the shaft body (26) and protrudes from one of the mounting side frames (23), one side of the pushing block (3) is provided with a first micro switch (4), the shaft body (26) is rotated to drive the pushing block (3) to push, so that the pushing block (3) is in abutting or separating cooperation with the first micro switch (4), the rotating shaft block (27) is provided with an abutting portion (5), one side of the abutting portion (5) is provided with a second micro switch (6), the rotating shaft block (27) is rotated to drive the abutting portion (5) to move, so that the abutting portion (5) is in abutting or separating cooperation with the second micro switch (6).

2. The microswitch indicating mechanism of a molded case circuit breaker according to claim 1, wherein The shell (1) comprises a base (11) and a middle frame (12), the operating mechanism (2) is located between the base (11) and the middle frame (12), the handle (21) is arranged to pass through the middle frame (12) in a direction away from the base (11), and the mounting side frame (23) is fixedly connected to the base (11).

3. The microswitch indicating mechanism of a molded case circuit breaker according to claim 2, wherein The middle frame (12) is fixedly connected with a first mounting plate (13), and the first micro switch (4) is fixedly installed on the middle frame (12) through the first mounting plate (13).

4. The microswitch indicating mechanism of a molded case circuit breaker according to claim 3, wherein The middle frame (12) is fixedly connected with a second mounting plate (14), and the second micro switch (6) is fixedly installed on the middle frame (12) through the second mounting plate (14), and the second micro switch (6) is located above the abutting portion (5).

5. The microswitch indicating mechanism of a molded case circuit breaker of claim 3 wherein, The base (11) is fixedly connected with a second mounting plate (14), and the second micro switch (6) is fixedly installed on the base (11) through the second mounting plate (14), and the second micro switch (6) is located below the abutting portion (5).

6. The microswitch indicating mechanism of a molded case circuit breaker according to claim 1 or 4 or 5, wherein The mounting side frame (23) is provided with a containing groove (231), and the linkage frame (22) has an insertion portion (221) inserted into the containing groove (231) and rotationally matched with the containing groove (231).

7. The microswitch indicating mechanism of a molded case circuit breaker of claim 6 wherein, The linkage frame (22) is integrally formed with a plug (222) above the insertion portion (221), and the mounting side frame (23) is provided with two cross rods (232) above the containing groove (231), the two cross rods (232) are provided with convex rods facing in opposite directions, and the two convex rods form an insertion space (233) for the plug (222) and the insertion portion (221).

8. The microswitch indicating mechanism of a molded case circuit breaker of claim 1, wherein, The part of the shaft body (26) protruding from the mounting side frame (23) is a flat connecting portion (261), and the pushing block (3) is provided with a slot (31) matched with the flat connecting portion (261).

Images