Terminal assembly and reclosing circuit breaker

Abstract

The utility model discloses a terminal assembly and a reclosing circuit breaker, and the terminal assembly comprises a terminal board and a power taking socket. The power taking socket comprises two elastic clamping arms and a mounting arm, and the mounting arm is fixed with the terminal board; one end of each elastic clamping arm is connected with the mounting arm, and the other end of each elastic clamping arm is a movable end; the two elastic clamping arms are arranged at an interval in the first direction, and the interval is used for clamping an electricity-taking PCB; the method has the advantage of being beneficial to installation of the power-taking PCB.

Description

TECHNICAL FIELD

[0001] The application relates to the field of low-voltage electrical apparatus, in particular to a reclosing circuit breaker. BACKGROUND

[0002] In order to realize remote opening and closing of a small circuit breaker, a reclosing circuit breaker is derived in the field of small circuit breakers.

[0003] The reclosing circuit breaker comprises an electric operation module and a circuit breaker module, and the electric operation module has a circuit board, a motor, a gear transmission assembly and the like inside, the rotation of the motor is controlled by a control circuit in the circuit board, so that the gear transmission assembly drives the opening and closing of the circuit breaker module.

[0004] The circuit board needs power supply, and the conventional way is to take power from the circuit breaker module. The existing power taking structure, as shown in CN211016943U, comprises a power taking PCB and a first U-shaped electric contact spring sheet on the magnetic yoke of the electromagnetic mechanism of each pole of the circuit breaker, and the first U-shaped electric contact spring sheet and the tin disc of the power taking PCB are in contact to realize electric connection.

[0005] The power taking structure described above has the first U-shaped electric contact spring sheet on one side of the power taking PCB, so it can only contact one surface of the power taking PCB. In order to ensure the stable installation and contact of the power taking PCB, the other surface of the power taking PCB must be in close contact with the inside of the circuit breaker shell, otherwise the power taking cannot be realized. If the circuit breaker shell is too close to the power taking PCB, it is not conducive to the installation of the power taking PCB, especially for the structure of a multi-pole circuit breaker, the installation of the power taking PCB will be more laborious.

[0006] Therefore, how to design a new type of power taking structure that is conducive to the installation of the power taking PCB is a problem worth considering. SUMMARY

[0007] Therefore, the purpose of the present application is to overcome the shortcomings of the prior art and provide a reclosing circuit breaker.

[0008] The application provides a terminal assembly, which comprises a terminal plate and a power taking socket. The power taking socket comprises two elastic clamping arms and a mounting arm, and the mounting arm is fixed to the terminal plate. One end of each of the two elastic clamping arms is connected to the mounting arm, and the other end is a movable end. The two elastic clamping arms are arranged at intervals in a first direction, and the interval is used to clamp a power taking PCB.

[0009] In some embodiments of the present application, the elastic clamping arm comprises a clamping section and a connecting section, a clamping gap is formed between the two clamping sections, and the clamping gap is used to clamp the power-taking PCB; the clamping section is connected to the mounting arm through the connecting section, the connecting section is a bent structure or an arc structure, a gap between the two connecting sections is an avoiding gap, the avoiding gap is greater than the clamping gap and greater than the thickness of the power-taking PCB.

[0010] In some embodiments of the present application, the mounting arm comprises two fixed sections and an intermediate section, the two fixed sections are respectively connected to two ends of the intermediate section in a second direction; the two elastic clamping arms are respectively connected to two ends of the intermediate section in a first direction; the first direction and the second direction are two perpendicular directions; the two fixed sections are fixedly connected to the terminal plate, and the intermediate section is indirectly fixed to the terminal plate through the fixed sections.

[0011] In some embodiments of the present application, a screw frame is sleeved on the terminal plate, the screw frame is adjacent to a first end portion of the terminal plate, the first end portion is arranged beyond the screw frame, and the power-taking socket is fixed on the first end portion and located on one side of the screw frame.

[0012] In some embodiments of the present application, the screw frame has a through hole, the size of the first end portion in the second direction is less than the diagonal width size of the through hole and greater than the size of the through hole in the second direction; the size of the power-taking socket in the second direction is greater than the size of the through hole in the second direction and not greater than the size of the first end portion in the second direction.

[0013] In some embodiments of the present application, the power-taking socket and the terminal plate are fixed by screws or rivets or welding.

[0014] A reclosing circuit breaker comprises a control module, a power-taking PCB and at least one circuit breaker pole; each circuit breaker pole comprises two groups of wiring structures, and all terminal assemblies under at least one group of wiring structures are the terminal assemblies; the power-taking PCB is inserted into all power-taking sockets, the power-taking PCB has conductive parts corresponding to the power-taking sockets, and the conductive parts are in contact with the elastic clamping arms to form electrical connections.

[0015] In some embodiments of the present application, the elastic clamping arm is provided with a guide part, two guide parts of the same power-taking socket form an open structure, and the open structure is used to guide the insertion of the power-taking PCB into the power-taking socket.

[0016] In some embodiments of the present application, the circuit breaker pole comprises a circuit breaker housing, a power taking channel is formed on the circuit breaker housing; the terminal assembly is arranged in the circuit breaker housing, and the power taking socket is at least partially in the power taking channel; the power taking channel is used for inserting the power taking PCB, and the power taking channel is provided with a guide rib, and the power taking PCB is inserted into the open structure along the guide rib until completely inserted into the power taking socket.

[0017] In some embodiments of the present application, all terminal assemblies under the two groups of wiring structures are the terminal assemblies described above; the number of power taking PCBs is two, and the power taking PCBs correspond to the wiring structures one by one, and the power taking PCBs are inserted into all power taking sockets under the corresponding wiring structures.

[0018] The present application has the following beneficial effects compared with the prior art:

[0019] The two elastic clamping arms of the power taking socket clamp the power taking PCB, which can make the power taking PCB more stable, reduce the design requirements of some limiting structures of the circuit breaker housing (the housing does not need to be in close contact with the power taking PCB), and improve the stability of the conductive cooperation of the power taking structure. Especially in a multi-pole circuit breaker, each pole uses a power taking socket to clamp the power taking PCB, which effectively reduces the situation that the housing is too close to cause the power taking PCB to be difficult to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A schematic diagram of a reclosing circuit breaker is shown;

[0022] Figure 2 An explosion schematic diagram of a circuit breaker pole and a power taking PCB is shown;

[0023] Figure 3 An internal schematic diagram of a circuit breaker pole is shown;

[0024] Figure 4 A structure schematic diagram of a through-hole type power taking channel is shown;

[0025] Figure 5 A structure schematic diagram of a blind slot type power taking channel is shown;

[0026] Figure 6 A cooperation schematic view of the power-taking PCB and the plurality of power-taking sockets in the embodiment of the present application is shown.

[0027] Figure 7 A structural schematic view of the power-taking socket in the embodiment of the present application is shown.

[0028] Figure 8 A structural schematic view of the power-taking socket and a kind of terminal assembly in the embodiment of the present application is shown.

[0029] Figure 9 A structural schematic view of the power-taking socket and another kind of terminal assembly in the embodiment of the present application is shown.

[0030] Figure 10 A schematic view of the screw frame in the embodiment of the present application is shown.

[0031] Figure 11 A schematic view of the first end in the embodiment of the present application is shown. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation to the present application.

[0033] In the description of the present application, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0034] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0037] like Figures 1-11 As shown, an embodiment of this application is a reclosing circuit breaker, which includes:

[0038] The control module 100 includes a control housing and contains an electric operating mechanism and a control circuit board assembly.

[0039] The electric operating mechanism includes a motor and a gear transmission assembly. The circuit of the control circuit board assembly drives the motor to rotate, which in turn drives the gear transmission assembly to operate. The gear transmission assembly then drives the operating mechanism of the circuit breaker pole 200 to perform opening and closing operations. Here, the circuit of the control circuit board assembly, the motor, and the gear transmission assembly are conventional technologies in this field and will not be described in detail.

[0040] The control circuit board assembly includes two power-drawing PCBs 104, which are used to draw power from the circuit breaker pole 200. Here, the power-drawing PCBs 104 can be used for sampling the power supply circuit of the control circuit board assembly; or they can be used to obtain electrical signal parameters on the circuit breaker pole 200 and feed them back to the control circuit board assembly for logical judgment.

[0041] The circuit breaker has 200 poles and a total of 4 poles. Of course, it can also have 1 pole, 2 poles, or 3 poles.

[0042] Each circuit breaker pole 200 includes a circuit breaker housing 201 and an operating mechanism, contact system, arc extinguishing structure, and two sets of wiring structures 202 located within the circuit breaker housing 201.

[0043] The power taking PCB 104 is powered from the wiring structure 202. Since the power taking structures are basically similar, one of them is described below, and the others can be referred to this structure, and will not be described in detail.

[0044] The wiring structure 202 includes a terminal assembly, which includes a wiring screw 204, a screw frame 206, a terminal plate 208, and a power taking socket 210.

[0045] The power taking socket 210 is fixed on the upper surface of the terminal plate 208, and the fixing here is riveting, of course, in addition to this, it can also be fixed by screws, welding, etc. For the power taking socket 210, it contains two elastic clamping arms 212 and a mounting arm 214, the mounting arm 214 is fixed with the terminal plate 208, one end of the two elastic clamping arms 212 is connected with the mounting arm 214, and the other end is a movable end. The two elastic clamping arms 212 are arranged in a spaced manner in the first direction X (also called the length direction), since the elastic clamping arms 212 are elastic, when the power taking PCB 104 is inserted into the space, the power taking PCB 104 can be clamped. Here, the power taking PCB 104 has a number of conductive parts corresponding to the power taking socket 210, when the elastic clamping arms 212 clamp the power taking PCB 104, the elastic clamping arms 212 and the conductive parts also complete the electrical connection.

[0046] Through such a power taking socket 210 arrangement, since the power taking socket 210 is fixed with the terminal plate 208, and can also clamp the power taking PCB 104, the limiting requirement for the circuit breaker housing 201 can be greatly reduced, and it is not necessary to set some limiting structures next to the surface of the power taking PCB 104 as in the prior art.

[0047] Here, each elastic clamping arm 212 includes a clamping section 212a and a connecting section 212b, and the clamping section 212a is connected to the mounting arm 214 through the connecting section 212b. The clamping gap 2120 is formed between the two clamping sections 212a, and the clamping gap 2120 is smaller than the power taking PCB 104, and the power taking PCB 104 is clamped and conductive by the clamping section 212a. Both connecting sections 212b are arc-shaped structures in this embodiment, and of course they can also be bent structures. The arc-shaped structure and the bent structure are beneficial to be connected to the mounting arm 214. At the same time, the gap between the two connecting sections 212b is larger than the clamping gap 2120, which can be called the avoiding gap 2140, and the size of the avoiding gap 2140 is greater than the thickness of the power taking PCB 104. Such design, the contact area of the conductive socket and the power taking PCB 104 is mainly concentrated in the clamping section 212a, which can reduce the total contact area as much as possible while ensuring stable assembly and conductive contact, and can reduce the resistance of the power taking PCB 104 during installation, and is more conducive to the installation of the power taking PCB 104.

[0048] Here, each mounting arm 214 includes two fixed sections 214a and a middle section 214b, and the two fixed sections 214a are respectively connected to both ends of the middle section 214b in the second direction Y (which can be said to be the width direction). The two elastic clamping arms 212 are respectively connected to both ends of the middle section 214b in the first direction X. The riveting position is located on the fixed section 214a, so that the two fixed sections 214a are fixedly connected with the terminal plate 208, and the middle section 214b is indirectly fixed with the terminal plate 208 through the fixed section 214a. The arrangement of the fixed section 214a and the middle section 214b is beneficial to the fixation of the power taking socket 210 and the terminal plate 208, and is also beneficial to the deformation part (elastic clamping arm 212) of the power taking socket 210 being far away from the fixed point, and is more conducive to the stress deformation of the elastic clamping arm 212.

[0049] Here, the screw frame 206 is sleeved on the terminal plate 208. For the terminal plate 208, it includes a first end 208a and a second end, and the screw frame 206 of any wiring structure 202 is arranged close to the first end 208a. The second end of the terminal plate 208 of different wiring structures 202 has different functions, for example, the second end of the terminal plate 208 of the wiring structure 202 is used to weld the coil of the electromagnetic system. For example, the second end of the terminal plate 208 of the wiring structure 202 is used to weld the coil of the electromagnetic system. Figure 3 Figure 3 ​For example, the second end of the terminal plate 208 of the wiring structure 202 is used to weld a transition piece (here, the transition piece is welded between the terminal plate 208 and the bimetallic strip). The first end 208a of the terminal plate 208 will be arranged to protrude out of the screw frame 206, and the power supply socket 210 is fixed to the upper surface of the first end 208a and is located on one side of the screw frame 206.

[0050] The arrangement of the first end 208a is fixed in this way because, for the circuit breaker, the first end 208a is closest to the side of the circuit breaker, so that the power supply structure is also as close as possible to the side of the circuit breaker, avoiding affecting other components inside the circuit breaker (otherwise, the other components of the circuit breaker need to avoid the power supply structure), and more reasonably utilizing the overall space of the circuit breaker.

[0051] Here, the screw frame 206 has a through hole 2061, the size E of the first end 208a in the second direction Y is less than the diagonal width size D of the through hole 2061 and greater than the size S of the through hole 2061 in the second direction Y. The size of the power supply socket 210 in the second direction Y is greater than the size of the through hole 2061 in the second direction Y and not greater than the size of the first end 208a in the second direction Y. When installing, as long as the screw frame 206 is inclined so that the first end 208a and the power supply socket 210 pass through the diagonal, and then the screw frame 206 is turned back to the appropriate angle after completion. Such a structure not only ensures that the screw frame 206 and the first end 208a form a limit, but also makes the overall size of the power supply socket 210 as large as possible, which is conducive to the conductive connection of the power supply socket 210.

[0052] For the terminal assembly in the same group of wiring structures 202, in order to realize the access of the power supply PCB 104, a power supply passage 2010 is provided on the circuit breaker housing 201. Here, since the circuit breaker poles 200 are arranged in sequence along the second direction Y, the power supply passage 2010 is also provided along the second direction Y.

[0053] Here, the power supply passage 2010 of the circuit breaker housing 201 of different poles is different. For example, the power supply passage 2010 of the most edge circuit breaker pole 200 is a blind groove (one end is open and the other end is closed). For the circuit breaker pole 200 between the most edge circuit breaker pole 200 and the control module 100, the power supply passage 2010 thereof is a through hole. Through the design of the above-mentioned power supply passage 2010, the power supply passages 2010 of all circuit breaker housings 201 are connected in communication, and the power supply PCB 104 can be inserted into all power supply passages 2010.

[0054] Here, the conductive sockets in the same group of wiring structures 202 are located in the same group of mutually-communicating power-taking channels 2010. The elastic clamping arms 212 of these conductive sockets are provided with guide portions 212c, and the two guide portions 212c of the same power-taking socket 210 form an open structure 212d, so that when the power-taking PCB 104 is inserted, it can pass through the open structure 212d between the two elastic clamping arms 212, and thus the design of the open structure 212d will facilitate the insertion of the power-taking PCB 104.

[0055] In each power-taking channel 2010, there is a guide rib 2011 that is closer to the insertion direction of the power-taking PCB 104 than the open structure 212d in the current power-taking channel 2010. The power-taking PCB 104 can first slide along the guide rib 2011 into the open structure 212d during insertion, until it is fully inserted into the power-taking socket 210. Such a design of the guide rib 2011 in combination with the open structure 212d will make the insertion of the power-taking PCB 104 very simple and convenient.

[0056] For the two groups of wiring structures 202, they correspond to two power-taking PCBs 104, and each power-taking PCB 104 corresponds to one wiring structure 202. Since the power-taking structures are similar, they will not be described here.

[0057] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0058] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A terminal assembly characterized by: The terminal plate and the power taking socket are included; the power taking socket includes two elastic clamping arms and a mounting arm, the mounting arm is fixed with the terminal plate; one end of the two elastic clamping arms is connected with the mounting arm, and the other end is a movable end; the two elastic clamping arms are arranged at intervals in a first direction, and the interval is used for clamping the power taking PCB.

2. A terminal assembly according to claim 1, wherein: The elastic clamping arm includes a clamping section and a connecting section, a clamping gap is formed between the two clamping sections, and the clamping gap is used for clamping the power taking PCB; the clamping section is connected with the mounting arm through the connecting section, the connecting section is a bending structure or an arc structure, the gap between the two connecting sections is an avoiding gap, the avoiding gap is greater than the clamping gap, and is greater than the thickness of the power taking PCB.

3. A terminal assembly according to claim 1, wherein: The mounting arm includes two fixed sections and an intermediate section, the two fixed sections are respectively connected with both ends of the intermediate section in a second direction; the two elastic clamping arms are respectively connected with both ends of the intermediate section in the first direction; the first direction and the second direction are two perpendicular directions; the two fixed sections are fixedly connected with the terminal plate, and the intermediate section is indirectly fixed with the terminal plate through the fixed sections.

4. The terminal assembly of claim 1, wherein: A screw frame is sleeved on the terminal plate, the screw frame is adjacent to a first end portion of the terminal plate, the first end portion is arranged beyond the screw frame, and the power taking socket is fixed on the first end portion and located on one side of the screw frame.

5. A terminal assembly according to claim 4, wherein: The screw frame has a through hole, the size of the first end portion in the second direction is less than the diagonal width size of the through hole, and is greater than the size of the through hole in the second direction; the size of the power taking socket in the second direction is greater than the size of the through hole in the second direction, and is not greater than the size of the first end portion in the second direction.

6. A terminal assembly according to claim 1, wherein: The power taking socket and the terminal plate are fastened, riveted or welded through a screw.

7. A reclosing circuit breaker comprising a control module, a power take off PCB board and at least one circuit breaker pole; characterized by: Each circuit breaker pole includes two groups of wiring structures, and all terminal assemblies under at least one group of wiring structures are the terminal assemblies according to any one of claims 1-6; The power taking PCB is inserted into all power taking sockets, and the power taking PCB has conductive parts corresponding to the power taking sockets, the conductive parts are in contact with the elastic clamping arms to form electrical connections.

8. A reclosing circuit breaker according to claim 7, characterized in that: The elastic clamping arms are provided with guide portions, and the two guide portions of the same power taking socket form an open structure, which is used to guide the insertion of the power taking PCB into the power taking socket.

9. A reclosing circuit breaker according to claim 8, characterized in that: The circuit breaker pole includes a circuit breaker shell, and the circuit breaker shell is provided with a power taking channel; the terminal assembly is arranged in the circuit breaker shell, and the power taking socket is at least partially in the power taking channel; the power taking channel is used for inserting the power taking PCB, and the power taking channel is provided with a guide rib; after the power taking PCB is inserted into the power taking channel, the power taking PCB slides along the guide rib into the open structure until the power taking PCB is completely inserted into the power taking socket.

10. A reclosing circuit breaker according to claim 7, characterized in that: All terminal assemblies under the two groups of wiring structures are the terminal assemblies according to any one of claims 1-6; the number of the power taking PCBs is two, the power taking PCBs correspond to the wiring structures one by one, and the power taking PCBs are inserted into all power taking sockets in the corresponding wiring structures.

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