Wiring nut mounting structure for molded case circuit breaker
By designing the wiring nut installation structure for plastic shell circuit breakers, the limit design of single nut and parallel nut installation slots is used to solve the problems of different nut sizes and quantities at different rated currents, and the adaptation of multi-special nuts and the universality of parts are improved.
Patent Information
- Application Number
- CN202421228780.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The size and quantity of terminal nuts of plastic case circuit breakers vary depending on the rated current, resulting in the need of multiple sets of bases or plug parts, which are low in versatility.
A wiring nut installation structure is designed, including a mounting hole position and a nut assembly plug that is opened on the circuit breaker base. The nut assembly plug includes a single nut installation slot and a parallel nut installation slot, which enables the adaptation of multi-size nuts through limiting ribs and bent limit walls.
It realizes the installation of nuts of multiple specifications under the same shell frame, adapts to multiple wiring requirements, improves the versatility of parts, and facilitates the installation of wiring posts when the plug is not installed.
Smart Images
Figure CN222562590U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of circuit breakers and relates to a wiring nut installation structure for a molded case circuit breaker. Background Art
[0002] The terminals of the molded case circuit breaker are equipped with nuts to connect cables or copper bars. The nuts are generally fixed in the circuit breaker base through plugs. Depending on the rated current, the wiring requirements will be different, so the size and number of nuts at the terminal will be different, so multiple sets of base or plug parts are required to adapt to different wiring requirements, and the parts have low versatility. Utility Model Content
[0003] The purpose of the utility model is to provide a wiring nut installation structure which is used for a molded case circuit breaker and has high adaptability to nuts of multiple sizes.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] A wiring nut installation structure includes a mounting hole opened on a circuit breaker base and a nut assembly plug arranged on the mounting hole;
[0006] The nut assembly plug includes a mounting seat, a single nut mounting groove opened on the mounting seat, and parallel nut mounting grooves arranged on both sides of the single nut mounting groove;
[0007] The single nut mounting groove comprises a first limiting rib which is arranged oppositely and at intervals on the mounting seat, and the first limiting wall, the second limiting wall and the third limiting wall are bent and connected in sequence on the opposite side walls of the first limiting rib, the length of the second limiting wall is adapted to the length of the side wall of the nut to be assembled, the height of the sixth limiting wall and the seventh limiting wall is adapted to the height of the side wall of the nut to be assembled, the height of the fifth limiting wall is lower than the height of the side wall of the nut to be assembled, and the bending angles of the first limiting wall and the second limiting wall and the bending angles of the second limiting wall and the third limiting wall are adapted to the angles of the side walls of the nut to be assembled;
[0008] The parallel nut mounting groove includes a bent limiting wall, and the bent limiting wall includes a fourth limiting wall and a fifth limiting wall that are bent and connected. Among the first limiting ribs arranged opposite to each other, one end face of a first limiting rib is provided with a sixth limiting wall, and one end face of another first limiting rib is provided with a seventh limiting wall. The length of the fifth limiting wall is adapted to the length of the side wall of the nut to be assembled, and the bending angle of the fourth limiting wall and the fifth limiting wall, and the angle between the fifth limiting wall and the sixth limiting wall are adapted to the angle between the side walls of the nut to be assembled; the seventh limiting wall and the fifth limiting wall are arranged opposite to each other, and the distance between the two is adapted to the distance between the opposite side walls of the nut to be assembled.
[0009] Furthermore, the parallel nut installation grooves are symmetrically arranged on both sides of the single nut installation groove.
[0010] Furthermore, the bent limiting wall also includes an eighth limiting wall bently connected to the fifth limiting wall, and the eighth limiting wall is coplanarly arranged and connected to the sixth limiting wall.
[0011] Furthermore, the single nut installation groove is connected with the parallel nut installation groove to form a through installation groove, and a reinforcing rib connected to the inner wall is provided in the through installation groove.
[0012] Furthermore, the reinforcing rib is provided with a support block for supporting the nuts to be installed in the parallel nut installation grooves.
[0013] Furthermore, a guide groove is provided on the mounting seat along the assembly direction, and a guide platform matched with the guide groove is provided on the inner wall of the mounting hole.
[0014] Furthermore, the nut assembly plug comprises a base plate, and the mounting seat is arranged on the base plate.
[0015] Furthermore, a limiting through hole is provided on the substrate, and a threaded hole is correspondingly provided on the outer edge of the mounting hole. The substrate is detachably connected to the circuit breaker base by screws passing through the limiting through hole and screwed into the threaded hole.
[0016] Furthermore, a positioning block is provided on the inner wall of the installation hole, and a positioning groove adapted to the positioning block is provided on the base plate.
[0017] Furthermore, an assembly limiting assembly is provided on the side wall of the mounting seat, and the assembly limiting assembly includes a connecting seat and a wedge block which are sequentially connected to the positioning groove along the assembly direction.
[0018] When the nut assembly plug is assembled in the mounting hole, the wedge block is clamped with the positioning block.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] (1) The utility model can install nuts of various specifications under the same housing frame, adapt to various wiring requirements, and has strong parts versatility.
[0021] (2) The utility model has a large space for installing the plug, which makes it easy to install the terminal block without installing the plug. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the installation of the nut assembly plug and the circuit breaker base when installing double nuts;
[0023] Figure 2 It is a schematic diagram of the installation of the nut assembly plug and the circuit breaker base when installing a single nut;
[0024] Figure 3 It is the installation diagram of the nut assembly plug and the bottom of the circuit breaker base;
[0025] Figure 4 It is a schematic diagram of the structure at the bottom of the circuit breaker base;
[0026] Figure 5 , Figure 6 It is a schematic diagram of the structure of the nut assembly plug;
[0027] Figure 7 is a cross-sectional view of the nut assembly plug installed in the circuit breaker base;
[0028] Figure 8 yes Figure 1 A partial enlarged view of the middle A part;
[0029] Fig. 9 This is a cross-sectional view of the installation when installing double nuts.
[0030] Description of the markings in the figure:
[0031] 1-circuit breaker base, 11-positioning block, 12-allowing hole, 13-threaded hole, 14-guide platform, 15-front edge of positioning block, 2-nut assembly plug, 21-first limiting rib, 211-first limiting wall, 212-second limiting wall, 213-third limiting wall, 214-sixth limiting wall, 215-seventh limiting wall, 22-bending limiting wall, 221-fourth limiting wall, 222-fifth limiting wall, 223-eighth limiting wall, 23-guide groove, 24-limiting through hole, 25-wedge block, 26-positioning groove, 27-support block, 3-double nut, 4-screw, 5-single nut. DETAILED DESCRIPTION
[0032] The following embodiments are implemented based on the above technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0035] Example:
[0036] like Figure 1 or Figure 2 A wiring nut installation structure shown in the figure comprises an installation hole opened on a circuit breaker base 1, and a nut assembly plug 2 arranged on the installation hole; the nut assembly plug 2 comprises a mounting seat, a single nut installation groove opened on the mounting seat, and parallel nut installation grooves arranged on both sides of the single nut installation groove; Figure 5 and Figure 6 As shown, the single nut mounting groove includes a first limiting rib 21 which is relatively and spaced apart on the mounting seat, and the first limiting wall 211, the second limiting wall 212, and the third limiting wall 213 are bent and connected in sequence on the opposite side walls of the first limiting rib 21, the length of the second limiting wall 212 is adapted to the length of the side wall of the nut to be assembled, and the bending angles of the first limiting wall 211 and the second limiting wall 212, and the bending angles of the second limiting wall 212 and the third limiting wall 213 are adapted to the angles of the side walls of the nut to be assembled; the parallel nut mounting groove includes a bent limiting wall 22, and the bent limiting wall 22 includes a fourth limiting wall 221 and a fifth limiting wall 222 which are bent and connected, and in the relatively arranged first limiting rib 21, one A sixth limiting wall 214 is provided on one end face of the first limiting rib 21, and a seventh limiting wall 215 is provided on one end face of the other first limiting rib 21. The length of the fifth limiting wall 222 is adapted to the length of the side wall of the nut to be assembled, the heights of the sixth limiting wall 214 and the seventh limiting wall 215 are adapted to the heights of the side walls of the nut to be assembled, the height of the fifth limiting wall 222 is lower than the height of the side wall of the nut to be assembled, the bending angle between the fourth limiting wall 221 and the fifth limiting wall 222, and the angle between the fifth limiting wall 222 and the sixth limiting wall 214 are adapted to the angle between the side walls of the nut to be assembled; the seventh limiting wall 215 and the fifth limiting wall 222 are arranged opposite to each other, and the distance between the two is adapted to the distance between the opposite side walls of the nut to be assembled.
[0037] This embodiment can realize the assembly of a single nut 5 by a single wiring nut installation structure (such as Figure 1 As shown) or double nuts 3 are assembled in parallel (as shown Figure 2The former is realized by a single nut installation groove, and the single nut 5 is embedded in the single nut installation groove, so that a pair of opposite side edges are respectively in contact with or gap-set with the second limiting walls 212 on the two first limiting ribs 21, and the two adjacent corners of the side edges are respectively limited at the bending connection between the first limiting wall 211 and the second limiting wall 212, and the bending connection between the second limiting wall 212 and the third limiting wall 213, so that the single nut 5 is limitedly installed in the single nut installation groove, and at this time, the parallel nut installation grooves on both sides are used as the concession grooves of the two outer corners of the single nut 5. The latter is realized through parallel nut installation grooves, and the double nuts 3 are respectively embedded in the corresponding parallel nut installation grooves, one side of the nut is in contact with the fifth limiting wall 222 or a gap is set, and the side adjacent to the side is in contact with the fourth limiting wall 221 or a gap is set, the corner is limited at the bending connection between the fifth limiting wall 222 and the fourth limiting wall 221, the other side adjacent to the side is in contact with the sixth limiting wall 214 or a gap is set, and the side opposite to the side is in contact with the seventh limiting wall 215 or a gap is set, so that the nut is limitedly installed in the parallel nut installation groove. At this time, the single nut installation groove is used as a makeshift groove for the inner side and the corners at both ends of the nut.
[0038] In some specific embodiments, the parallel nut installation grooves are symmetrically arranged on both sides of the single nut installation groove.
[0039] In some specific embodiments, the bent limiting wall 22 further includes an eighth limiting wall 223 bent and connected to the fifth limiting wall 222 , and the eighth limiting wall 223 is coplanarly arranged and connected to the sixth limiting wall 214 .
[0040] In some specific embodiments, the single nut installation groove is connected with the parallel nut installation groove to form a through installation groove, and a reinforcing rib connected to the inner wall is provided in the through installation groove to enhance the strength of the groove body.
[0041] In some specific embodiments, the reinforcing ribs are provided with support blocks 27 for supporting the nuts to be installed in the parallel nut installation grooves. While the support blocks 27 play a supporting role, they also make the nuts partially suspended, which is convenient for disassembly and replacement.
[0042] In some specific embodiments, a guide groove 23 is provided on the mounting seat along the assembly direction, and a guide platform 14 matched with the guide groove is provided on the inner wall of the mounting hole.
[0043] In some specific embodiments, the nut assembly plug 2 includes a base plate, and the mounting seat is arranged on the base plate.
[0044] In some specific embodiments, Figure 3 , Figure 4As shown, a limit hole 24 is provided on the base plate, and a threaded hole 13 is provided at the outer edge of the mounting hole. The base plate is detachably connected to the circuit breaker base 1 by screws 4 passing through the limit hole 24 and screwed to the threaded hole 13. More specifically, the threaded hole is a self-tapping screw hole.
[0045] In some specific embodiments, a positioning block 11 is provided on the inner wall of the installation hole, and a positioning groove 26 matched with the positioning block 11 is opened on the base plate.
[0046] In some specific embodiments, an assembly limit assembly is provided on the side wall of the mounting seat, and the assembly limit assembly includes a connecting seat and a wedge block 25 connected in sequence with the positioning groove 26 along the assembly direction. When the nut assembly plug 2 is assembled in the mounting hole, the wedge block 25 is engaged with the front edge 15 of the positioning block. Figure 7 shown.
[0047] In some specific embodiments, Figure 8 , Fig. 9 As shown, a limit plate abutting against the front side of the mounting seat is also provided in the mounting hole, and a clearance hole 12 is opened on the limit plate, from which the single nut 5 or the double nut 3 can be connected to other components of the circuit breaker, and the wall surface of the clearance hole 12 also serves to limit the double nut 3.
[0048] Install the single nut 5 or the double nut 3 into the single nut installation groove or the parallel nut installation groove, install the nut assembly plug 2 into the installation hole according to the guide groove 23 and the guide platform 14, and limit it with the positioning groove 26. The wedge block 25 prevents the nut assembly plug 2 from sliding out of the installation hole and fixes it with screws.
[0049] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.
Claims
1. A wiring nut mounting structure, comprising a mounting hole opened on a circuit breaker base (1), and a nut assembly plug (2) arranged on the mounting hole; characterized in that: The nut assembly plug (2) comprises a mounting seat, a single nut mounting groove formed on the mounting seat, and parallel nut mounting grooves formed on both sides of the single nut mounting groove; The single nut installation groove comprises a first limiting rib (21) which is arranged oppositely and at intervals on the installation seat; the first limiting wall (211), the second limiting wall (212) and the third limiting wall (213) are bent and connected in sequence on the opposite side walls of the first limiting rib (21); the length of the second limiting wall (212) is adapted to the length of the side wall of the nut to be assembled; the bending angle between the first limiting wall (211) and the second limiting wall (212) and the bending angle between the second limiting wall (212) and the third limiting wall (213) are adapted to the included angle of the side wall of the nut to be assembled; The parallel nut installation groove comprises a bent limiting wall (22), the bent limiting wall (22) comprises a fourth limiting wall (221) and a fifth limiting wall (222) connected in a bent manner, and in the first limiting ribs (21) arranged opposite to each other, one end surface of one first limiting rib (21) is provided with a sixth limiting wall (214), and one end surface of the other first limiting rib (21) is provided with a seventh limiting wall (215), the length of the fifth limiting wall (222) is adapted to the length of the side wall of the nut to be assembled, and the sixth limiting wall (21 4) The height of the seventh limiting wall (215) is matched with the height of the side wall of the nut to be assembled, the height of the fifth limiting wall (222) is lower than the height of the side wall of the nut to be assembled, the bending angle between the fourth limiting wall (221) and the fifth limiting wall (222), and the angle between the fifth limiting wall (222) and the sixth limiting wall (214) are matched with the angle between the side walls of the nut to be assembled; the seventh limiting wall (215) and the fifth limiting wall (222) are arranged opposite to each other and the distance between the two is matched with the distance between the opposite side walls of the nut to be assembled.
2. The wiring nut installation structure according to claim 1, characterized in that: The parallel nut installation grooves are symmetrically arranged on both sides of the single nut installation groove.
3. The wiring nut installation structure according to claim 1, characterized in that: The bent limiting wall (22) further comprises an eighth limiting wall (223) bent and connected to the fifth limiting wall (222); the eighth limiting wall (223) is coplanarly arranged and connected to the sixth limiting wall (214).
4. The wiring nut installation structure according to claim 1, characterized in that: The single nut installation groove is connected with the parallel nut installation groove to form an installation through groove, and a reinforcing rib connected to the inner wall is arranged in the installation through groove.
5. The wiring nut installation structure according to claim 4, characterized in that: The reinforcing rib is provided with a supporting block (27) for supporting the nut to be installed in the parallel nut installation groove.
6. The wiring nut installation structure according to claim 1, characterized in that: A guide groove (23) is provided on the mounting seat along the assembly direction, and a guide platform (14) matching the guide groove is provided on the inner wall of the mounting hole.
7. The wiring nut installation structure according to claim 1, characterized in that: The nut assembly plug (2) comprises a base plate, and the mounting seat is arranged on the base plate.
8. The wiring nut installation structure according to claim 7, characterized in that: A limiting through hole is provided on the base plate, and a threaded hole is correspondingly provided on the outer edge of the mounting hole. The base plate is detachably connected to the circuit breaker base (1) by means of screws passing through the limiting through hole and being screwed into the threaded hole.
9. The wiring nut installation structure according to claim 7, characterized in that: A positioning block (11) is provided on the inner wall of the installation hole, and a positioning groove (26) adapted to the positioning block (11) is provided on the base plate.
10. The wiring nut installation structure according to claim 9, characterized in that: An assembly limit assembly is provided on the side wall of the mounting seat, and the assembly limit assembly comprises a connecting seat and a wedge block (25) which are sequentially connected to the positioning groove (26) along the assembly direction. When the nut assembly plug (2) is assembled in the installation hole, the wedge block (25) is engaged with the positioning block (11).