Circuit breaker molded case

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a circuit breaker molded case which comprises a base and a cover body covering the base, the end face, facing the cover body, of the base is provided with a containing groove, a switch used for controlling closing and opening of a circuit breaker is installed in the containing groove, and the cover body is provided with a through hole allowing the switch to penetrate through. Two mounting plates are arranged on the side, away from the base, of the cover body, the through hole is located between the two mounting plates, a protective cover for covering the switch is rotationally connected between the two mounting plates, and the mounting plates and the protective cover are provided with locking structures for connecting the mounting plates and the protective cover.

Description

Technical Field

[0001] This application relates to the technical field of circuit breakers, and in particular to a molded case of a circuit breaker. Background Art

[0002] A circuit breaker is a device used to protect an electrical system from overload and short circuit.

[0003] A molded case of a circuit breaker in the related art includes a cover body and a base disposed below the cover body. Electrical components are disposed inside the base, and a switch for controlling the opening and closing of the circuit breaker is disposed on the base. A through hole is formed in the cover body. The switch passes through the through hole and extends to the outside.

[0004] The circuit breaker is usually docked in a packing box. When the packing box is transported, the vibration of the vehicle causes the packing box and the circuit breaker to move, and then the circuit breakers come into contact with each other. And the switch is exposed outside the circuit breaker, resulting in the switch being easily damaged due to collision. Utility Model Content

[0005] In order to protect the switch, this application provides a molded case of a circuit breaker.

[0006] A molded case of a circuit breaker provided by this application adopts the following technical solutions:

[0007] A molded case of a circuit breaker includes a base and a cover body covering the base. A receiving groove is formed in the end face of the base facing the cover body. A switch for controlling the opening and closing of the circuit breaker is installed in the receiving groove. A through hole for the switch to pass through is formed in the cover body. Two mounting plates are provided on the side of the cover body away from the base. The through hole is located between the two mounting plates. A protective cover covering the switch is rotatably connected between the two mounting plates. A locking structure for connecting the mounting plate and the protective cover is provided.

[0008] By adopting the above technical solutions, driving the protective cover to rotate. When the protective cover covers the switch, it effectively protects the switch, avoiding extrusion of the switch during transportation, thereby protecting the circuit breaker. In addition, covering the switch can prevent misoperation of the switch by staff; conversely, rotating the protective cover to open allows operation of the switch; setting the locking structure limits the protective cover so that it is not easily rotated.

[0009] Optionally, an installation groove is formed in the end face of the protective cover facing the mounting plate. The locking structure includes a clamping block and a spring disposed in the installation groove. The bottom wall of the installation groove and the clamping block are respectively fixed to both ends of the spring. A first card slot for the clamping block to insert into is formed in the mounting plate. A first operating member for driving the clamping block to disengage from the first card slot is provided on the mounting plate; when the clamping block is inserted into the first card slot, the protective cover covers the switch and blocks the through hole.

[0010] By adopting the above technical solution, when the clamping block is aligned with the first clamping groove, the spring drives the clamping block to insert into the first clamping groove, connecting and fixing the protective cover to the mounting plate, making it difficult to rotate the protective cover. At this time, the protective cover covers the switch and blocks the through hole, protecting the switch.

[0011] Optionally, the side of the clamping block away from the spring is provided with an arc surface.

[0012] By adopting the above technical solution, when the clamping block is aligned with the first clamping groove, it is convenient for the clamping block to insert into the first clamping groove.

[0013] Optionally, a first insertion hole is formed in the bottom wall of the first clamping groove. The first operating member includes a first insertion rod inserted into the first insertion hole, and a first pushing block located in the first clamping groove is provided on the side of the first insertion rod facing the protective cover.

[0014] By adopting the above technical solution, driving the first insertion rod towards the protective cover makes the first pushing block drive the clamping block out of the first clamping groove, releasing the lock between the protective cover and the mounting plate, and facilitating the rotation of the protective cover.

[0015] Optionally, the cross-section of the first insertion rod and the inner cavity cross-section of the first insertion hole are both non-circular shapes.

[0016] By adopting the above technical solution, the first insertion rod cannot rotate in the first insertion hole, reducing the wear of the first insertion rod and improving the service life of the first insertion rod.

[0017] Optionally, a first operating block is provided on the end face of the first insertion rod away from the first pushing block.

[0018] By adopting the above technical solution, setting the first operating block increases the contact area between the operator and the operating member, enabling the staff to better drive the first pushing block to move; when the first operating block abuts against the mounting plate, it can limit the further movement of the first insertion rod, having a limiting function.

[0019] Optionally, a second clamping groove for the clamping block to insert is formed on the mounting plate; when the clamping block is inserted into the second clamping groove, the through hole of the protective cover is blocked.

[0020] By adopting the above technical solution, when the clamping block is aligned with the first clamping groove, the spring drives the clamping block to insert into the first clamping groove, connecting and fixing the protective cover to the mounting plate, making it difficult to rotate the protective cover. At this time, the protective cover is in an open state, enabling the staff to operate the switch without being interfered by the protective cover.

[0021] Optionally, a mounting block is provided on the protective cover.

[0022] By adopting the above technical solution, the staff can conveniently drive the protective cover to rotate through the operating block.

[0023] Optionally, a sealing ring groove is formed on the end face of the protective cover facing the cover body, and a sealing ring block is arranged in the sealing ring groove.

[0024] By adopting the above technical solution, when the protective cover is connected to the cover body through the locking structure, the sealing ring block abuts against the cover body, increasing the sealing performance between the protective cover and the cover body.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Driving the protective cover to rotate. When the protective cover covers the switch, it effectively protects the switch, avoiding extrusion of the switch during transportation, thereby protecting the circuit breaker; conversely, rotating the protective cover to open allows the switch to be operated; setting a locking structure to limit the position of the protective cover so that the protective cover is not easily rotated;

[0027] 2. Setting a first operating member to disengage the clamping block from the first card slot to unlock the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0030] Figure 2 is a partial exploded view highlighting the switch;

[0031] Figure 3 is a cross-sectional view highlighting the protective cover;

[0032] Figure 4 is Figure 3 an enlarged schematic view of part A in

[0033] Figure 5 is a schematic structural diagram highlighting the protective cover.

[0034] Reference numerals: 1, base; 2, cover body; 21, through hole; 22, mounting plate; 221, round hole; 222, round rod; 223, first card slot; 224, second card slot; 225, first jack; 226, second jack; 3, switch; 4, protective cover; 41, mounting block; 42, mounting groove; 43, sealing ring groove; 44, sealing ring block; 5, locking structure; 51, card block; 52, spring; 6, first operating member; 61, first plug rod; 62, first push block; 63, first operating block; 7, second operating member; 71, second plug rod; 72, second push block; 73, second operating block. Detailed implementation manner

[0035] The following further elaborates on this application in conjunction with the Figures 1-5 accompanying drawings.

[0036] This embodiment discloses a plastic case of a circuit breaker. Refer to Figure 1 and Figure 2 , a plastic case of a circuit breaker includes a base 1 and a cover body 2. A receiving groove is formed on one side of the base 1, and a switch 3 is installed in the receiving groove. The switch 3 is used to control the closing and opening of the circuit breaker.

[0037] Refer to Figure 1 and Figure 2 , the cover body 2 is covered on the base 1, and the cover body 2 shields and seals the receiving groove. A through hole 21 is formed on the end face of the cover body 2 away from the base 1, and the switch 3 passes through the through hole 21.

[0038] Refer to Figure 1 and Figure 2 , two mounting plates 22 are fixedly connected to the end face of the cover body 2 away from the base 1, and the two mounting plates 22 are parallel to each other. The through hole 21 is located between the two mounting plates 22. Round holes 221 are formed on the end faces of the two mounting plates 22 close to each other, and a round rod 222 is rotatably connected in the round holes 221.

[0039] Refer to Figure 1 and Figure 2 , a protective cover 4 is sleeved outside the round rod 222. The protective cover 4 is used to cover the switch 3 and shield the through hole 21. A mounting block 41 is fixedly connected to the side of the protective cover 4 away from the round rod 222.

[0040] Refer to Figure 2 and Figure 3 , a locking structure 5 for connecting the mounting plate 22 and the protective cover 4 is provided. A mounting groove 42 is formed on the end face of the protective cover 4 facing the mounting plate 22.

[0041] Refer to Figure 2 and Figure 4, the locking structure 5 includes a clamping block 51 and a spring 52, and both the clamping block 51 and the spring 52 are arranged in the mounting groove 42. One end of the spring 52 is fixedly connected to the bottom wall of the mounting groove 42, and the other end of the spring 52 is fixedly connected to the clamping block 51. The end face of the clamping block 51 away from the spring 52 is set as an arc surface. The spring 52 is in a compressed state.

[0042] Referring to Figure 2 and Figure 4 , a first clamping groove 223 and a second clamping groove 224 are formed on one side of the mounting plate 22 facing the protective cover 4. Both the first clamping groove 223 and the second clamping groove 224 can be inserted by the clamping block 51. A first insertion hole 225 is formed on the bottom wall of the first clamping groove 223. A second insertion hole 226 is formed on the bottom wall of the second clamping groove 224.

[0043] Referring to Figure 2 and Figure 4 , when the clamping block 51 is inserted into the first clamping groove 223, the protective cover 4 is in a closed state. The protective cover 4 covers the switch 3 and seals the through hole 21. When the clamping block 51 is inserted into the second clamping groove 224, the protective cover 4 is in an open state, and the staff can drive the switch 3.

[0044] Referring to Figure 5 , when the protective cover 4 is in a closed state, a sealing ring groove 43 is formed on the end face of the protective cover 4 facing the cover body 2, and a sealing ring block 44 is arranged in the sealing ring groove 43.

[0045] Referring to Figure 2 and Figure 4 , the mounting plate 22 is provided with a first operating member 6 and a second operating member 7. The first operating member 6 is used to drive the clamping block 51 to disengage from the first clamping groove 223. The first operating member 6 includes a first insertion rod 61, a first pushing block 62 and a first stop block. The first insertion rod 61 passes through the first insertion hole 225. The first pushing block 62 is arranged in the first clamping groove 223. One end of the first insertion rod 61 is fixedly connected to the first pushing block 62, and the other end of the first insertion rod 61 extends out of the first insertion hole 225 toward the side away from the protective cover 4. Further, the inner cavity cross-section of the first insertion hole 225 and the cross-section of the first insertion rod 61 both adopt non-circular shapes.

[0046] Referring to Figure 2 and Figure 4 , a first operating block 63 is threadedly connected to the side of the first insertion rod 61 away from the first pushing block 62, and the cross-section of the first operating block 63 is larger than the inner cavity cross-section of the first insertion hole 225. When the first operating block 63 abuts against the mounting plate 22, the end face of the first pushing block 62 away from the first insertion rod 61 is coplanar with the end face of the mounting plate 22 facing the protective cover 4.

[0047] Referring to Figure 2, the second operating member 7 is used to drive the clamping block 51 to disengage from the second card slot 224. The second operating member 7 includes a second insertion rod 71 and a second pushing block 72. The second insertion rod 71 is inserted into the second insertion hole 226. The second pushing block 72 is disposed in the second card slot 224. One end of the second insertion rod 71 is fixedly connected to the second pushing block 72, and the other end of the second insertion rod 71 extends out of the second insertion hole 226 toward the side away from the protective cover 4. Further, the cross-sectional shape of the inner cavity of the second insertion hole 226 and the cross-sectional shape of the second insertion rod 71 are both non-circular shapes.

[0048] Refer to Figure 2 , the second operating block 73 is threadedly connected to the side of the second insertion rod 71 away from the second pushing block 72, and the cross-sectional area of the second operating block 73 is larger than the cross-sectional area of the inner cavity of the second insertion hole 226. When the second operating block 73 abuts against the mounting plate 22, the end surface of the second pushing block 72 away from the second insertion rod 71 is coplanar with the end surface of the mounting plate 22 facing the protective cover 4.

[0049] The implementation principle of the circuit breaker plastic case in the embodiment of the present application is as follows: When the clamping block 51 is aligned with the first card slot 223, the spring 52 drives the clamping block 51 to insert into the first card slot 223, so that the protective cover 4 is fixedly connected to the mounting plate 22. Apply a force to the first operating block 63, so that the first pushing block 62 drives the clamping block 51 to disengage from the first card slot 223, facilitating the rotation of the protective cover 4 by the staff.

[0050] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this application belongs. The "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "upper", "lower", "left", "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0051] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application shall be included within the protection scope of this application.

Claims

1. A circuit breaker plastic case, comprising a base (1) and a cover body (2) covering the base (1), characterized in that: The end face of the base (1) facing the cover body (2) is provided with a receiving groove, and a switch (3) for controlling the closing and opening of the circuit breaker is installed in the receiving groove. A through hole (21) for the switch (3) to pass through is provided on the cover body (2). Two mounting plates (22) are provided on the side of the cover body (2) away from the base (1). The through hole (21) is located between the two mounting plates (22). A protective cover (4) covering the switch (3) is rotatably connected between the two mounting plates (22), and a locking structure (5) for connecting the two is provided between the mounting plate (22) and the protective cover (4).

2. The molded case of a circuit breaker according to claim 1, wherein: An installation groove (42) is provided on the end face of the protective cover (4) facing the mounting plate (22). The locking structure (5) includes a clamping block (51) and a spring (52) provided in the installation groove (42). The bottom wall of the installation groove (42) and the clamping block (51) are respectively fixedly connected to both ends of the spring (52). A first clamping groove (223) for the clamping block (51) to insert into is provided on the mounting plate (22). A first operating member (6) for driving the clamping block (51) to disengage from the first clamping groove (223) is provided on the mounting plate (22); when the clamping block (51) is inserted into the first clamping groove (223), the protective cover (4) covers the switch (3) and blocks the through hole (21).

3. A circuit breaker molded case according to claim 2, characterized in that: The side of the clamping block (51) away from the spring (52) is set as an arc surface.

4. A circuit breaker molded case according to claim 2, characterized in that: A first jack (225) is provided on the bottom wall of the first clamping groove (223). The first operating member (6) includes a first insertion rod (61) passing through the first jack (225). A first pushing block (62) located in the first clamping groove (223) is provided on the side of the first insertion rod (61) facing the protective cover (4).

5. A circuit breaker plastic case according to claim 4, characterized in that: The cross-section of the first insertion rod (61) and the inner cavity cross-section of the first jack (225) both adopt non-circular shapes.

6. A circuit breaker plastic case according to claim 4, characterized in that: A first operating block (63) is provided on the end face of the first insertion rod (61) away from the first pushing block (62).

7. A circuit breaker plastic case according to claim 2, characterized in that: A second clamping groove (224) for the clamping block (51) to insert into is provided on the mounting plate (22); when the clamping block (51) is inserted into the second clamping groove (224), the protective cover (4) does not block the through hole (21).

8. A circuit breaker molded case according to claim 1, characterized in that: An installation block (41) is provided on the protective cover (4).

9. A circuit breaker plastic case according to claim 1, characterized in that: A sealing ring groove (43) is provided on the end face of the protective cover (4) facing the cover body (2), and a sealing ring block (44) is provided in the sealing ring groove (43).

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