Wiring board for circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and particularly relates to a wiring board for a circuit breaker, which comprises a wiring board main body and a fixing part, the wiring board main body is integrally formed by the fixing part, a bending part and a connecting part, and the lower surface of the fixing part is provided with a plurality of limiting grooves with J-shaped structures; by arranging the clamping mechanism and utilizing the elasticity of a spring, a limiting piece drives a sliding rod to move towards one side of a cable in the circuit breaker, and the cable is clamped and pre-fixed through a clamping plate and an anti-skid plate, so that the problem that the cable is easy to slide on the surface of the wiring board when the cable is welded in a traditional wiring board is solved; the plurality of preformed holes are formed in the fixing part, and the wiring board main body and the circuit breaker main body are fixed by using the fixing bolts, so that the wiring board main body can be stably fixed with the circuit breaker, and the circuit breaker is prevented from being damaged when the circuit breaker is collided. And the wiring board main body slides in the circuit breaker, so that the cable welding position is broken.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a wiring board for circuit breakers. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions, and can close, carry and disconnect current under abnormal circuit conditions (including short circuit conditions) within a specified time. Therefore, a circuit breaker usually has overload, short circuit and residual current protection functions. A circuit breaker is generally composed of a contact system, wiring assembly, operating mechanism, release, housing, etc.

[0003] In electrical systems, conductive materials are usually required to transfer electrical energy to components. In high-current electrical connections, lug connections are usually used to achieve this, and are called lug connections. In lug connections, the cables inside the circuit breaker are usually welded to the surface of the terminal block. When the cables and the terminal block are welded, the worker holds the exposed end of the cable in one hand to make it abut against the surface of the terminal block, and holds the welding gun in the other hand to fix the cable to the terminal block.

[0004] For example, a Chinese patent with publication number CN220358041 U discloses a terminal block for a circuit breaker, which relates to the technical field of connecting pieces, and includes a terminal block body, wherein the terminal block body includes a fixing portion, a bending portion and a connecting portion; a connecting piece is extended from one side of the connecting portion, and a limiting component is provided on the side of the connecting portion, and the limiting component includes a plurality of limiting grooves provided on the surface of the connecting piece; the present application provides a plurality of limiting grooves, and when welding a cable or a coil to the connecting piece, the welding position of the cable or the coil on the connecting piece is made more precise, and the possibility of relative movement or misalignment of the cable or the coil when being welded to the connecting piece is reduced, thereby improving the welding effect, making the welding of the cable or the coil more firm, and reducing the possibility of cracks or fractures at the welding position after welding.

[0005] This patent has some disadvantages when used, such as: the device in this patent opens a limit groove on the surface of the terminal block, and uses the limit groove to reduce the possibility of cable sliding during welding. Since the welding end is not subject to the relatively stable clamping constraint between the terminal block and the terminal block during welding of the cable and the terminal block, the cable still has the possibility of sliding out of the limit groove; in addition, the device in this patent realizes a fixed connection with the circuit breaker through the convex block of the bending part and the mounting block of the fixing part. This fixing method is relatively unstable. When the terminal block is hit by external force, the connection with the circuit breaker is very easy to be disconnected, and the cable welded on the terminal block falls off due to the unstable fixing method. In view of this, we propose a terminal block for circuit breakers. Utility Model Content

[0006] The purpose of the utility model is to provide a wiring board for a circuit breaker to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a wiring board for a circuit breaker, comprising:

[0008] The wiring board body is formed by a fixed part, a bending part and a connecting part, wherein a plurality of limiting grooves in a J-shaped structure are provided on the lower surface of the fixed part, a first slide groove is provided at the side wall position of the J part of the limiting groove, and a second slide groove which is connected with the lower surface of the fixed part is provided in the inner cavity of the first slide groove;

[0009] A plurality of clamping mechanisms, each of which is located in a plurality of slide grooves and is used to clamp and constrain the cables;

[0010] Two side panels, the two side panels are symmetrically arranged and respectively arranged on both sides of the upper surface of the connecting part, the two side panels and the connecting part are an integrally formed structure, a closing cover is plugged and installed on the upper part of the two side panels, a threading hole is opened on the side wall of the side panel, an extrusion hole is opened on the upper surface of the connecting part, and a threaded hole is opened on the upper surface of the closing cover and located directly above the extrusion hole;

[0011] A fastening assembly is arranged on the closing cover and is used to fasten the external circuit.

[0012] In the above technical solution, further, the clamping mechanism includes:

[0013] The sliding rod is movably installed in the sliding groove one, and a limiting plate slidably connected to the sliding groove one is fixed on the circumferential side wall of the sliding rod, a spring is fixed on the side of the limiting plate away from the limiting groove, and the other end of the spring is fixed to the inner wall of the sliding groove one, a paddle fixed to the limiting plate slides in the sliding groove two, a card hole is opened on the paddle, and a card block is fixed on the side wall of the sliding groove two, and the card block is card-engaged with the card hole, and one end of the sliding rod extends into the limiting groove and is fixed with a splint.

[0014] In the above technical solution, further, an anti-skid plate is fixed to a side of the clamping plate away from the slide rod, and the surface of the anti-skid plate is provided with anti-skid patterns.

[0015] In the above technical solution, further, protrusions are symmetrically fixed to the side walls of the fixing portion, and a plurality of reserved holes are opened on the fixing portion.

[0016] In the above technical solution, further, a slot connected to the threading hole is provided on the upper surface of the side plate, and plug plates are symmetrically fixed on the lower surface of the cover, and the two plug plates are respectively plugged into and matched with the slots on the corresponding sides.

[0017] In the above technical solution, further, four symmetrically arranged clamping strips are fixed to the lower surface of the closing cover, and the inner side walls of the two side panels are symmetrically provided with clamping grooves, and the four clamping strips are respectively engaged with the corresponding clamping grooves.

[0018] In the above technical solution, further, the fastening assembly includes:

[0019] A threaded knob, wherein the threaded knob is threadedly mounted on the threaded hole, the bottom of the threaded knob is located below the closed cover, a connecting block is fixed to the bottom end of the threaded knob, an extrusion block is arranged at the bottom end of the connecting block, a connector with a T-shaped cross section is fixed to the upper surface of the extrusion block, the connector is rotatably mounted in the connecting block, the connecting block is rotatably matched with the extrusion block, and a through groove is provided on the extrusion block for accommodating the passage of an external circuit.

[0020] The beneficial effects of the utility model are:

[0021] 1. The terminal block for circuit breaker is provided with a clamping mechanism and utilizes the elasticity of the spring so that the limit plate drives the slide bar to move toward the cable side inside the circuit breaker, and the cable is clamped and pre-fixed by the clamping plate and the anti-slip plate, thereby solving the problem that the cable is easy to slide on the surface of the terminal block when welding the cable in the traditional terminal block.

[0022] 2. The terminal block for the circuit breaker is provided with a fastening assembly. By turning the threaded knob, the extrusion block cooperates with the extrusion hole to make the extrusion block effectively squeeze the external cable, thereby fixing the external cable. At the same time, the two ends of the external cable are clamped for the second time through the plug plates on both sides, which improves the disadvantage that the bolts are prone to loosening and falling off when the traditional device is fixed by bolts. At the same time, the fixing and disassembly methods are extremely simple and do not require the help of external tools.

[0023] 3. The terminal block for the circuit breaker has a plurality of reserved holes in the fixing part, and uses fixing bolts to fix the terminal block body and the circuit breaker body, thereby ensuring that the terminal block body can be stably fixed to the circuit breaker, and avoiding the situation in which the terminal block body slides inside the circuit breaker and causes the cable welding position to break when the circuit breaker is hit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the overall structural diagrams of the utility model;

[0025] Figure 2 This is the second schematic diagram of the overall (bottom) structure of the utility model;

[0026] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 4 It is a cross-sectional schematic diagram of the fixing part in the utility model;

[0028] Figure 5 For this utility model Figure 4 The enlarged structural diagram at B in the middle;

[0029] Figure 6 It is a structural schematic diagram of the clamping mechanism in the utility model;

[0030] Figure 7 It is a schematic diagram of the structure in which the cover and the wiring board body are separated in the utility model;

[0031] Figure 8 It is a structural schematic diagram of the closing cover and the fastening assembly of the utility model;

[0032] Fig. 9 It is a cross-sectional schematic diagram of the fastening assembly in the utility model.

[0033] The symbols in the figure are:

[0034] 1. Terminal block body; 101. Fixed part; 102. Bending part; 103. Connecting part; 2. Limiting groove; 3. Bump; 4. Reserved hole; 5. Slide groove 1; 6. Slide rod; 7. Limiting piece; 8. Spring; 9. Slide groove 2; 10. Pick; 11. Clamping hole; 12. Clamping block; 13. Clamping plate; 14. Anti-skid plate; 15. Side plate; 16. Closing cover; 17. Threading hole; 18. Slot; 19. Insert plate; 20. Clamping strip; 21. Clamping slot; 22. Extrusion hole; 23. Threaded hole; 24. Threaded knob; 25. Connecting block; 26. Extrusion block; 27. Connecting head; 28. Through groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0036] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0038] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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 cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0039] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0040] Embodiment 1:

[0041] See also Figure 1 - Fig. 9 As shown, this embodiment provides a wiring board for a circuit breaker, comprising:

[0042] The wiring board body 1 is formed by a fixed part 101, a bending part 102 and a connecting part 103, and a plurality of J-shaped limiting grooves 2 are provided on the lower surface of the fixed part 101, and a slide groove 5 is provided at the side wall position of the J part of the limiting groove 2, and a slide groove 2 9 which is connected with the lower surface of the fixed part 101 is provided in the inner cavity of the slide groove 5;

[0043] A plurality of clamping mechanisms, each of which is located in a plurality of slide grooves 5 and is used to clamp and constrain the cables;

[0044] Two side panels 15, the two side panels 15 are symmetrically arranged and are respectively arranged on both sides of the upper surface of the connecting portion 103, the two side panels 15 and the connecting portion 103 are an integrally formed structure, a closing cover 16 is plugged and installed above the two side panels 15, a threading hole 17 is opened on the side wall of the side panel 15, an extrusion hole 22 is opened on the upper surface of the connecting portion 103, and a threaded hole 23 is opened on the upper surface of the closing cover 16 and located directly above the extrusion hole 22;

[0045] A fastening assembly, which is disposed on the closing cover 16 and is used to fasten the external circuit;

[0046] In this embodiment, the clamping mechanism includes:

[0047] Slide rod 6, slide rod 6 is movably installed in slide groove 1 5, a limit plate 7 slidably connected to slide groove 1 5 is fixed on the circumferential side wall of slide rod 6, a spring 8 is fixed on the side of limit plate 7 away from limit groove 2, and the other end of spring 8 is fixed to the inner wall of slide groove 1 5, a paddle 10 fixed to limit plate 7 slides in slide groove 2 9, a clamping hole 11 is opened on the paddle 10, a clamping block 12 is fixed on the side wall of slide groove 2 9, and the clamping block 12 is clamped with the clamping hole 11, one end of slide rod 6 extends into the limit groove 2 and is fixed with a clamping plate 13;

[0048] In this embodiment, the fastening assembly includes:

[0049] A threaded knob 24 is threadedly mounted on the threaded hole 23. The bottom of the threaded knob 24 is located below the closing cover 16. A connecting block 25 is fixed to the bottom end of the threaded knob 24. An extrusion block 26 is provided at the bottom end of the connecting block 25. A connecting head 27 with a T-shaped cross section is fixed to the upper surface of the extrusion block 26. The connecting head 27 is rotatably mounted in the connecting block 25. The connecting block 25 and the extrusion block 26 are rotatably matched. A through slot 28 for accommodating the passage of an external circuit is provided on the extrusion block 26.

[0050] In this embodiment, it also includes:

[0051] The upper surface of the side plate 15 is provided with a slot 18 connected to the threading hole 17, and the lower surface of the cover 16 is symmetrically fixed with plug plates 19, and the two plug plates 19 are respectively plugged into the slots 18 on the corresponding sides;

[0052] Four symmetrically arranged clamping strips 20 are fixed to the lower surface of the closing cover 16 , and clamping grooves 21 are symmetrically opened on the inner side walls of the two side panels 15 . The four clamping strips 20 are respectively engaged with the corresponding clamping grooves 21 .

[0053] Among them, the use principle of this device is as follows:

[0054] During installation, first place one end of the cable inside the circuit breaker in the limit slot 2, bend the front end of the cable along the limit slot 2, then release the clamping mechanism, which clamps and fixes the cable in advance. At this time, the operator presses the main body of the cable with one hand, and welds and fixes the cable and the limit slot 2 with the other hand. When multiple cables are fixed, align the fixing part 101 with the reserved position in the circuit breaker and press it. At this time, the protrusion 3 is engaged with the hole in the circuit breaker, and the operator then passes the bolt through the reserved hole 4 to fix the terminal block body 1 to the circuit breaker.

[0055] When the clamping mechanism is working, the operator presses the block 12 downward, and the wedge-shaped horizontal edge of the block 12 slides to the position of the clamping hole 11 and no longer contacts the surface wall of the block 12. At this time, the block 12 no longer constrains the pick 10. The operator slowly releases his hand. Under the elastic effect of the spring 8, the spring 8 will push the limit plate 7 to slide toward one side of the limit groove 2 when it recovers. The limit plate 7 drives the slide bar 6 to slide synchronously. The slide bar 6 pushes the clamp 13 to squeeze the cable and restrains the cable by cooperating with the inner wall of the limit groove 2. It is worth noting that in order to ensure the recyclability and continuous secondary use of the device, when the operator welds the cable, the welding point position should be as far away as possible from the clamping mechanism position in the limit groove 2;

[0056] When fixing the external cable, the head of the external cable is passed through the threading hole 17 on the side panel 15 on one side in turn, and passes through the through slot 28 in the fastening assembly, and then passes through the threading hole 17 on the other side panel 15. After the threading is completed, the closing cover 16 is pressed down, and the two plug-in plates 19 are respectively inserted into the corresponding slots 18, and the two ends of the external cable are pre-clamped and constrained. When the closing cover 16 is in place, the four card strips 20 are respectively connected to the corresponding card slots 21 positions. At this time, the closing cover 16 is fixed to the two side panels 15. It is worth adding that the card block 12 and the card strip 20 are both elastic. Then the operator turns the threaded knob 24, and the threaded knob 24 moves downward. The extrusion block 26 drives the middle part of the external cable to move downward. As the external cable is located at the peripheral position of the through groove 28 and continuously falls into the extrusion hole 22, the extrusion block 26 and the extrusion hole 22 form an inverted "J"-shaped structure for the cable. As the extrusion block 26 continuously falls into the extrusion hole 22, the external cable is gradually firmly fixed between the two side plates 15 and the closing cover 16, so that the device completes the rapid connection and installation of the internal and external lines of the circuit breaker.

[0057] By providing a clamping mechanism and utilizing the elasticity of the spring 8, the limit plate 7 drives the slide bar 6 to move toward the side of the cable inside the circuit breaker, and the cable is clamped and pre-fixed by the clamping plate 13 and the anti-slip plate 14, thereby solving the problem that the cable is easy to slide on the surface of the terminal block when welding the cable in the traditional terminal block; by providing a fastening component, by rotating the threaded knob 24, the extrusion block 26 cooperates with the extrusion hole 22, so that the extrusion block 26 effectively squeezes the external cable, thereby fixing the external cable, and at the same time, the two ends of the external cable are clamped for the second time by the plug plates 19 on both sides, thereby improving the disadvantage that the bolts are easy to loosen and fall off when the traditional device is fixed by bolts, and the fixing and disassembly method is extremely simple, and no external tools are required.

[0058] Embodiment 2:

[0059] This embodiment provides a terminal block for a circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features: an anti-slip plate 14 is fixed to the side of the clamping plate 13 away from the slide rod 6, and the surface of the anti-slip plate 14 is provided with anti-slip grooves.

[0060] Among them, by providing the anti-slip plate 14 and the anti-slip grooves, the friction between the cables inside the circuit breaker is increased, thereby improving the effective clamping of the cables.

[0061] Embodiment 3:

[0062] This embodiment provides a terminal block for a circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features: protrusions 3 are symmetrically fixed to the side walls of the fixing portion 101 , and a plurality of reserved holes 4 are opened on the fixing portion 101 .

[0063] Among them, by opening a plurality of reserved holes 4 at the fixing portion 101, the terminal block body 1 and the circuit breaker body are fixed by fixing bolts, thereby ensuring that the terminal block body 1 can be stably fixed to the circuit breaker, and avoiding the terminal block body 1 sliding inside the circuit breaker when the circuit breaker is hit, thereby preventing the cable welding position from breaking.

[0064] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A terminal block for a circuit breaker, characterized in that: include: A wiring board body (1), the wiring board body (1) being formed integrally of a fixing portion (101), a bending portion (102) and a connecting portion (103); a plurality of limiting grooves (2) in a J-shaped structure are provided on the lower surface of the fixing portion (101); a slide groove 1 (5) is provided at the J-portion side wall of the limiting groove (2); and a slide groove 2 (9) is provided in the inner cavity of the slide groove 1 (5) and is in communication with the lower surface of the fixing portion (101); A plurality of clamping mechanisms, each of which is located in one of the plurality of slide grooves (5) and is used to clamp and restrain the cable; Two side panels (15), the two side panels (15) are symmetrically arranged and respectively arranged on both sides of the upper surface of the connecting portion (103), the two side panels (15) and the connecting portion (103) are an integrally formed structure, a closing cover (16) is plugged and installed above the two side panels (15), a threading hole (17) is opened on the side wall of the side panel (15), an extrusion hole (22) is opened on the upper surface of the connecting portion (103), and a threaded hole (23) is opened on the upper surface of the closing cover (16) and located directly above the extrusion hole (22); A fastening assembly is arranged on the closing cover (16) and is used to fasten the external circuit.

2. A circuit breaker terminal block according to claim 1, characterized in that: The clamping mechanism comprises: A slide bar (6), the slide bar (6) is movably installed in the slide groove (5), a limit plate (7) slidably connected to the slide groove (5) is fixed on the circumferential side wall of the slide bar (6), a spring (8) is fixed on the side of the limit plate (7) away from the limit groove (2), and the other end of the spring (8) is fixed to the inner wall of the slide groove (5), a paddle (10) fixed to the limit plate (7) is slidable in the slide groove (9), a clamping hole (11) is opened on the paddle (10), a clamping block (12) is fixed on the side wall of the slide groove (9), and the clamping block (12) is clamped and matched with the clamping hole (11), and one end of the slide bar (6) extends into the limit groove (2) and is fixed with a clamping plate (13).

3. A circuit breaker terminal block according to claim 2, characterized in that: An anti-skid plate (14) is fixed to the side of the clamping plate (13) away from the slide rod (6), and the surface of the anti-skid plate (14) is provided with anti-skid patterns.

4. A circuit breaker terminal block according to claim 1, characterized in that: The side wall of the fixing portion (101) is symmetrically fixed with a protrusion (3), and the fixing portion (101) is provided with a plurality of reserved holes (4).

5. A circuit breaker terminal block according to claim 1, characterized in that: The upper surface of the side plate (15) is provided with a slot (18) connected to the threading hole (17), and the lower surface of the closing cover (16) is symmetrically fixed with plug plates (19), and the two plug plates (19) are respectively plugged into and matched with the slots (18) on the corresponding sides.

6. A circuit breaker terminal block according to claim 5, characterized in that: Four symmetrically arranged clamping strips (20) are fixed to the lower surface of the closing cover (16), and the inner side walls of the two side plates (15) are symmetrically provided with clamping grooves (21), and the four clamping strips (20) are respectively clamped and matched with the corresponding clamping grooves (21).

7. A circuit breaker terminal block according to claim 1, characterized in that: The fastening assembly comprises: A threaded knob (24) is threadedly mounted on the threaded hole (23). The bottom of the threaded knob (24) is located below the closing cover (16). A connecting block (25) is fixed at the bottom end of the threaded knob (24). An extrusion block (26) is arranged at the bottom end of the connecting block (25). A connecting head (27) having a T-shaped cross section is fixed on the upper surface of the extrusion block (26). The connecting head (27) is rotatably mounted in the connecting block (25). The connecting block (25) and the extrusion block (26) are rotatably matched. A through groove (28) for accommodating the passage of an external circuit is provided on the extrusion block (26).

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