Accessory structure of circuit breaker

Abstract

The utility model provides an accessory structure of a circuit breaker, which comprises a base shell and an accessory assembly detachably arranged above the base shell, the accessory assembly comprises an installation shell, a plurality of installation grooves arranged in the installation shell and a plurality of accessories arranged in the installation grooves, a positioning assembly used for positioning the installation shell is arranged between the accessory assembly and the base shell and comprises a first positioning structure used for longitudinally positioning the installation shell and a second positioning structure used for transversely positioning the installation shell. The accessory structure can overcome the defect that in the prior art, an accessory groove body or a cover body is prone to being damaged in the dismounting process.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and specifically to an accessory structure for a circuit breaker. Background Technology

[0002] The backup protection device of a molded case circuit breaker can activate the trip unit to disconnect the circuit in the event of overload or short circuit faults, thereby protecting electrical equipment and personnel safety.

[0003] In the existing utility model patent with publication number CN219180438, a circuit breaker housing structure and a circuit breaker are disclosed, which includes a base, an accessory slot and a cover. The accessory slot is detachably connected to the cover and the cover is detachably connected to the base. When it is necessary to replace or repair the accessory, the cover and the base need to be disassembled, and then the accessory slot needs to be removed from the cover before the accessory slot can be repaired. This disassembly method is very cumbersome and the accessory slot or cover is easily damaged during the disassembly process. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the accessory slot or cover is easily damaged during the disassembly process in the prior art, thereby providing an accessory structure for circuit breakers that facilitates maintenance and replacement of accessories.

[0005] Therefore, this utility model provides an accessory structure for a circuit breaker, including a base housing and an accessory assembly detachably disposed above the base housing. The accessory assembly includes a mounting housing, a plurality of mounting slots formed in the mounting housing, and a plurality of accessories installed in the mounting slots. A positioning component for positioning the mounting housing is provided between the accessory assembly and the base housing. The positioning component includes a first positioning structure for longitudinally positioning the mounting housing and a second positioning structure for laterally positioning the mounting housing.

[0006] Furthermore: the first positioning structure includes a pin disposed on one of the mounting housing or the base housing, and a first positioning ring disposed on the other and sleeved outside the pin.

[0007] Furthermore, the second positioning structure includes a positioning pin disposed on one of the mounting housing or the base housing, and a second positioning ring disposed on the other and sleeved with the positioning pin.

[0008] Furthermore: the shaft pin is disposed on the mounting housing, and the first positioning ring is formed on the base housing.

[0009] Furthermore, the base housing also includes a support member, the second positioning ring is disposed on the support member, and the positioning pin is disposed on the mounting housing.

[0010] Furthermore, the mounting housing and the support are respectively provided with a first insertion hole and a second insertion hole for inserting external fastening screws, and the first insertion hole and the second insertion hole are coaxially arranged.

[0011] Furthermore: a cover plate is provided on the top of the base housing, the accessory assembly is disposed between the base housing and the cover plate, and a fixing structure for positioning the accessory assembly is provided between the cover plate and the accessory assembly, the fixing structure including a positioning rib disposed on the top of the cover plate.

[0012] Furthermore: the positioning rib includes at least one first limiting rib arranged laterally and at least one second limiting rib arranged longitudinally, the first limiting rib and the second limiting rib are arranged alternately, and both the first limiting rib and the second limiting rib abut against the upper end of the accessory.

[0013] The technical solution of this utility model has the following advantages:

[0014] 1. This utility model provides an accessory structure for a circuit breaker. A mounting housing is fixed to a base housing, and several accessories are sequentially installed in mounting slots. A first positioning structure and a second positioning structure are used to fix the mounting housing, thereby preventing it from falling off and improving the connection strength between the housing and the base housing. The first positioning structure can be used to fix the longitudinal position of the mounting housing, preventing vertical movement. The first positioning structure can be fixed by a snap-fit ​​or snap-fit ​​method, for example, by providing a snap-fit ​​block or snap-fit ​​block on the mounting housing and a snap-fit ​​groove or snap-fit ​​groove on the base housing that matches the snap-fit ​​block or snap-fit ​​block. The second positioning structure is used to prevent lateral movement of the mounting housing and can be used to fix the lateral position of the mounting housing. The second positioning structure can also be... The mounting housing is secured using a snap-fit ​​or clip-fit ​​method. For example, a snap-fit ​​or clip-fit ​​block is provided on the mounting housing, and a snap-fit ​​or clip-fit ​​groove that matches the snap-fit ​​or clip-fit ​​block is provided on the base housing. The first positioning structure prevents the mounting housing from moving up and down, while the second positioning structure prevents the mounting housing from moving left and right. The first and second positioning structures effectively fix the mounting housing to the base housing. When replacement or repair is needed, the cover plate can be removed to quickly disassemble and replace the damaged accessories. Unlike existing technologies, where the mounting housing is in an inverted state after the cover plate is removed, requiring the cover plate and the mounting housing to be disassembled before accessories can be replaced or repaired.

[0015] 2. The present invention provides an accessory structure for a circuit breaker, wherein the first positioning structure includes a shaft pin and a first positioning ring. The shaft pin is disposed on the base housing, and the mounting housing has an extension plate. The first positioning ring is disposed on the extension plate. During installation, the first positioning ring and the shaft pin need to be aligned, and then the first positioning ring is inserted into the shaft pin to fix the position of the mounting housing and prevent the mounting housing from moving up and down. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the circuit breaker after the cover plate has been removed;

[0018] Figure 2 for Figure 1 Enlarged view of section A;

[0019] Figure 3 A schematic diagram of the overall structure of the circuit breaker after removing the base housing and cover plate;

[0020] Figure 4 A schematic diagram of the connection structure between the mounting housing and an accessory;

[0021] Figure 5 A schematic diagram of the structure for mounting the housing;

[0022] Figure 6 Another structural diagram showing the installation of the housing;

[0023] Figure 7 A sectional view of the connection structure between the housing and accessories;

[0024] Figure 8 This is a schematic diagram of the cover plate.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base housing; 2. Accessory assembly; 21. Mounting housing; 22. Several mounting slots; 23. Accessory; 3. Positioning assembly; 31. First positioning structure; 311. Shaft pin; 312. First positioning ring; 32. Second positioning structure; 321. Positioning pin; 322. Second positioning ring; 4. Support component; 5. First insertion hole; 51. Second insertion hole; 6. Cover plate; 7. Fixing structure; 71. Positioning rib; 711. First limiting rib; 712. Second limiting rib; 72. Positioning slot. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Example

[0032] This embodiment provides an accessory structure for a circuit breaker, including a base housing 1 and an accessory assembly 2 detachably disposed above the base housing 1. The accessory assembly 2 includes a mounting housing 21, a plurality of mounting slots 22 formed in the mounting housing 21, and a plurality of accessories 23 installed in the mounting slots. A positioning assembly 3 for positioning the mounting housing 21 is disposed between the accessory assembly 2 and the base housing 1. The positioning assembly 3 includes a first positioning structure 31 for longitudinally positioning the mounting housing 21 and a second positioning structure 32 for laterally positioning the mounting housing 21.

[0033] The specific improvements mentioned above are as follows: Figures 1-4As shown, compared to the prior art, the mounting housing 21 is fixed to the base housing 1, and several accessories 23 are sequentially installed in the mounting groove. The mounting housing 21 is fixed using a first positioning structure 31 and a second positioning structure 32, thereby preventing the housing from falling off and improving the connection strength between the housing and the base housing 1. The first positioning structure 31 can be used to fix the longitudinal position of the mounting housing 21, preventing the mounting structure from moving up and down. The first positioning structure 31 can be fixed by a snap-fit ​​or snap-fit ​​method, for example, by setting a snap-fit ​​block or snap-fit ​​block on the mounting housing 21 and a snap-fit ​​groove or snap-fit ​​groove on the base housing 1 that matches the snap-fit ​​block or snap-fit ​​block. The second positioning structure 32 is used to prevent the mounting housing 21 from moving left and right. The second positioning structure 32 can be used to fix the lateral position of the mounting housing 21. The second positioning structure 32 can also be fixed by a snap-fit ​​or snap-fit ​​method. The mounting housing 21 is fixed in a snap-fit ​​manner, for example, by setting a snap-fit ​​block or snap-fit ​​block on the mounting housing 21 and a snap-fit ​​groove or snap-fit ​​groove on the base housing 1 that matches the snap-fit ​​block or snap-fit ​​block. The first positioning structure 31 can prevent the mounting housing 21 from moving up and down, and the second positioning structure 32 can prevent the mounting housing 21 from moving left and right. The first positioning structure 31 and the second positioning structure 32 can effectively fix the mounting housing 21 and fix it on the base housing 1. When replacement or maintenance is required, the cover plate 6 can be removed to quickly disassemble and replace the damaged accessory 23. Unlike the prior art, where the mounting housing 21 is in an inverted state after the cover plate 6 is removed, and the cover plate 6 and the mounting housing 21 need to be separated before the accessory 23 can be replaced or repaired.

[0034] Based on the above embodiments: the first positioning structure 31 includes a pin 311 disposed on one of the mounting housing 21 or the base housing 1, and a first positioning ring 312 disposed on the other and sleeved on the outside of the pin 311.

[0035] The specific improvements mentioned above are as follows: Figure 3 As shown, the first positioning structure 31 includes a shaft pin 311 and a first positioning ring 312. The shaft pin 311 is disposed on the base housing 1. The mounting housing 21 has an extension plate. The first positioning ring 312 is formed on the extension plate. During the installation process, the first positioning ring 312 and the shaft pin 311 need to be aligned, and then the first positioning ring 312 is inserted into the shaft pin 311 to fix the position of the mounting housing 21 and prevent the mounting housing 21 from moving up and down.

[0036] Based on the above embodiments: the second positioning structure 32 includes a positioning pin 321 disposed on either the mounting housing 21 or the base housing 1, and a second positioning ring 322 disposed on the other and sleeved with the positioning pin 321.

[0037] Based on the above embodiments: the shaft pin 311 is disposed on the mounting housing 21, and the first positioning ring 312 is formed on the base housing 1.

[0038] The specific improvements mentioned above are as follows: Figure 4 As shown, the second positioning structure 32 includes a positioning pin 321 and a second positioning ring 322. When fixing the housing 21, the second positioning ring 322 needs to be inserted into the positioning pin 321 first, and then the shaft pin 311 is inserted into the first positioning ring 312, so as to prevent the housing 21 from moving from the top and bottom and from the left and right sides.

[0039] Based on the above embodiments: the base housing 1 further includes a support member 4, the second positioning ring 322 is disposed on the support member 4, and the positioning pin 321 is disposed on the mounting housing 21.

[0040] Based on the above embodiments: the mounting housing 21 and the support member 4 are respectively provided with a first insertion hole 5 and a second insertion hole 51 for inserting external fastening nails, and the first insertion hole 5 and the second insertion hole 51 are coaxially arranged.

[0041] The specific improvements mentioned above are as follows: Figures 5-7 As shown, the support 4 is installed and fixed on the base housing 1, and the second positioning ring 322 is opened on the support 4. When the mounting housing 21 is placed above the base housing 1, the positioning pin 321 is inserted into the second positioning ring 322, and the first positioning ring 312 will also automatically align with the shaft pin 311. At this time, the fastening nail can be screwed into the first insertion hole 5 and the second insertion hole 51.

[0042] Based on the above embodiments: a cover plate 6 is provided on the top of the base housing 1, the accessory assembly 2 is disposed between the base housing 1 and the cover plate 6, and a fixing structure 7 for positioning the accessory assembly 2 is provided between the cover plate 6 and the accessory assembly 2. The fixing structure 7 includes a positioning rib 71 disposed on the top of the cover plate 6.

[0043] Based on the above embodiments: the positioning rib 71 includes at least one horizontally arranged first limiting rib 711 and at least one vertically arranged second limiting rib 712. The first limiting rib 711 and the second limiting rib 712 are arranged alternately, and both the first limiting rib 711 and the second limiting rib 712 abut against the upper end of the attachment 23.

[0044] The specific improvements mentioned above are as follows: Figure 8As shown, the cover plate 6 is provided with a first limiting rib 711 arranged horizontally and a second limiting rib 712 arranged vertically. The first limiting rib 711 and the second limiting rib 712 are arranged alternately. When the mounting housing 21 is installed on the base housing 1, and then each accessory 23 is fixed into the mounting groove by snap-fit, and finally the cover plate 6 is closed, the first limiting rib 711 and the second limiting rib 712 inside the cover plate 6 will abut against the upper end of each accessory 23. Thus, even if the snap-fit ​​fails, the first limiting rib 711 and the second limiting rib 712 can still fix each accessory 23 and prevent it from shaking, thereby achieving dual positioning.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An accessory structure for a circuit breaker, characterized in that: The system includes a base housing (1) and an accessory assembly (2) detachably disposed above the base housing (1). The accessory assembly (2) includes a mounting housing (21), a plurality of mounting slots (22) formed in the mounting housing (21), and a plurality of accessories (23) installed in the mounting slots. A positioning assembly (3) for positioning the mounting housing (21) is provided between the accessory assembly (2) and the base housing (1). The positioning assembly (3) includes a first positioning structure (31) for longitudinally positioning the mounting housing (21) and a second positioning structure (32) for laterally positioning the mounting housing (21).

2. The accessory structure of a circuit breaker according to claim 1, characterized in that: The first positioning structure (31) includes a pin (311) disposed on one of the mounting housing (21) or the base housing (1) and a first positioning ring (312) disposed on the other and sleeved on the outside of the pin (311).

3. The accessory structure of a circuit breaker according to claim 2, characterized in that: The second positioning structure (32) includes a positioning pin (321) disposed on one of the mounting housing (21) or the base housing (1) and a second positioning ring (322) disposed on the other and sleeved with the positioning pin (321).

4. The accessory structure of a circuit breaker according to claim 3, characterized in that: The axle pin (311) is disposed on the mounting housing (21), and the first positioning ring (312) is disposed on the base housing (1).

5. The accessory structure of a circuit breaker according to claim 4, characterized in that: The base housing (1) also includes a support member (4), the second positioning ring (322) is disposed on the support member (4), and the positioning pin (321) is disposed on the mounting housing (21).

6. The accessory structure of a circuit breaker according to claim 5, characterized in that: The mounting housing (21) and the support (4) are respectively provided with a first insertion hole (5) and a second insertion hole (51) for inserting external fastening nails, and the first insertion hole (5) and the second insertion hole (51) are coaxially arranged.

7. The accessory structure of a circuit breaker according to any one of claims 1-5, characterized in that: A cover plate (6) is provided on the top of the base housing (1). The accessory assembly (2) is disposed between the base housing (1) and the cover plate (6). A fixing structure (7) for positioning the accessory assembly (2) is provided between the cover plate (6) and the accessory assembly (2). The fixing structure (7) includes a positioning rib (71) disposed on the top of the cover plate (6).

8. The accessory structure of a circuit breaker according to claim 7, characterized in that: The positioning rib (71) includes at least one first limiting rib (711) arranged laterally and at least one second limiting rib (712) arranged longitudinally. The first limiting rib (711) and the second limiting rib (712) are arranged alternately. The first limiting rib (711) and the second limiting rib (712) both abut against the upper end of the attachment (23).

Images