Reclosing circuit breaker with auxiliary accessories

Abstract

The utility model discloses a reclosing circuit breaker with an auxiliary accessory. The reclosing circuit breaker comprises a cover body and an operating mechanism, the cover body is provided with an upper space, the operating mechanism is located below the cover body, and one end of a handle of the operating mechanism penetrates into the upper space; wherein an output sliding block is arranged in the upper space, the output sliding block is arranged on the handle in a sleeving mode, and the output sliding block and the handle move synchronously; the auxiliary accessory comprises a coupler and an auxiliary switch, and the auxiliary switch is electrically connected with the coupler; the coupler is fixed on the cover body, and an insertion part of the coupler is exposed outside the cover body; the auxiliary switch is located in the motion trail of the output sliding block, and when the handle of the operating mechanism is located at the switching-on state position or the handle of the operating mechanism is located at the switching-off state position, the output sliding block triggers the auxiliary switch; the auxiliary accessory has the characteristic of improving the stability of the auxiliary accessory.

Description

Technical Field

[0001] The present application relates to the field of low-voltage switchgear, and in particular to a reclosing circuit breaker with auxiliary accessories. Background Art

[0002] Auxiliary accessories are widely used in molded case circuit breakers. Since ordinary molded case circuit breakers have accessory slots, most auxiliary accessories are set in the accessory slots on the top cover of the circuit breaker. The function of auxiliary accessories is to feedback the opening and closing status of the circuit breaker to the outside (such as the host computer).

[0003] However, for reclosing circuit breakers, their electric operating mechanism, control circuit board and other components occupy most of the space in the middle cover and top cover of the circuit breaker, and it is impossible to set accessory slots like ordinary molded case circuit breakers, so it is impossible to place auxiliary accessories in the form of accessories. Therefore, the auxiliary accessories of this type of reclosing circuit breaker are often built into the reclosing circuit breaker.

[0004] For example, a reclosing molded case leakage circuit breaker disclosed in CN208336118U has an auxiliary accessory that is arranged near the rotating shaft, that is, near the so-called contact support. The auxiliary accessory is triggered or not triggered by the rotation of the rotating shaft, so that an external circuit breaker opening and closing signal can be given.

[0005] However, for the circuit breaker, the rotating shaft belongs to the high-voltage part (because the moving contact of the circuit breaker is fixed on the rotating shaft). Such auxiliary accessories are too close to the high-voltage part and are easily burned.

[0006] Therefore, it is necessary to more reasonably set auxiliary accessories for reclosing circuit breakers. Summary of the invention

[0007] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a reclosing circuit breaker with auxiliary accessories.

[0008] The present application provides: a reclosing circuit breaker with auxiliary accessories, which includes a cover body and an operating mechanism; an upper space is provided on the cover body, the operating mechanism is located below the cover body, and one end of the handle of the operating mechanism penetrates into the upper space; wherein an output slider is provided in the upper space, the output slider is sleeved on the handle, and the output slider and the handle move synchronously; the auxiliary accessories include a connector and an auxiliary switch, and the auxiliary switch is electrically connected to the connector; the connector is fixed on the cover body, and the plug-in part of the connector is exposed outside the cover body; the auxiliary switch is within the movement trajectory of the output slider, and when the handle of the operating mechanism is in the closing state position or when the handle of the operating mechanism is in the opening state position, the output slider triggers the auxiliary switch.

[0009] The auxiliary accessories are set in the cover body, and the auxiliary switch is triggered by the synchronous movement of the handle and the output slider to realize the external feedback of the circuit breaker opening and closing signals. Compared with the existing technology, the auxiliary accessories of this structure are closer to the weak current part, thus avoiding the damage of the auxiliary accessories by strong current. At the same time, due to the design of the connector, it is also convenient for other circuit breakers or host computers to form an electrical connection with the auxiliary switch, which is conducive to the output of signals.

[0010] In some embodiments of the present application, the auxiliary accessory further includes a circuit board, the auxiliary switch and the connector are fixed on the circuit board, and the auxiliary switch and the connector are electrically connected through the circuit board.

[0011] The design of the circuit board makes it easier for the auxiliary switch and the connector to form a stable electrical connection, and the circuit board can make several components into a small assembly, which is conducive to the assembly of auxiliary accessories.

[0012] In some embodiments of the present application, a slot is provided on the cover body, and the circuit board is inserted into the slot.

[0013] The slot design makes this auxiliary accessory very easy to install.

[0014] In some embodiments of the present application, the cover body includes a partition wall and a side wall surrounding the partition wall, and the upper space is formed by the side wall surrounding the partition wall; the circuit board is arranged near one of the side walls, and a mounting groove connected to the outside is opened on the side wall, and the connector is arranged on the mounting groove; the auxiliary switch and the connector are respectively located on two opposite surfaces of the circuit board.

[0015] This structural design allows the auxiliary accessory to be closer to the side wall, which helps to make the auxiliary accessory structure simpler.

[0016] In some embodiments of the present application, a first mounting protrusion and a second mounting protrusion are provided on the cover body, the first mounting protrusion and the second mounting protrusion are arranged at an interval, and the slot is opened on the first mounting protrusion and the second mounting protrusion.

[0017] This structure facilitates the design of the slot and the installation of auxiliary accessories.

[0018] In some embodiments of the present application, the auxiliary switch is a micro switch or a travel switch.

[0019] In some embodiments of the present application, a DC motor and a gear box are also provided in the cover body, and the gear box includes a reduction gear set and an eccentric wheel; the input end of the reduction gear set is connected to the output part of the DC motor, and the output end of the reduction gear set is connected to the eccentric wheel; the eccentric wheel is arranged to rotate, and the eccentric wheel and the output slider form a crank slider mechanism, and the slider is caused to reciprocate through the continuous output of the DC motor to realize the opening and closing operations of the handle.

[0020] This structure is conducive to the reciprocating motion of the output slider, so as to facilitate the opening and closing operations of the handle.

[0021] In some embodiments of the present application, the gearbox includes a first bracket and a second bracket, the first bracket is fixed on the second bracket, and the reduction gear set is arranged between the first bracket and the second bracket; a guide rail is fixed under the second bracket, and the output slider is slidably arranged on the guide rail.

[0022] This structural design will make the output slider move more smoothly and is also beneficial to the design of the output slider, gears, etc.

[0023] In some embodiments of the present application, an upper cover is further included, which is fixed on the cover body and has an indication hole. The output slider has an indication portion, and the indication portion changes in the indication hole by sliding the output slider to different positions, thereby presenting a mechanical indication of the opening and closing state of the circuit breaker.

[0024] By adopting this structure, mechanical indication can be realized through the movement of the output slider, which has the characteristics of simplified transmission structure and obvious indication status.

[0025] In some embodiments of the present application, the output slider includes a first slider and a driving plate, the driving plate is fixed to the first slider, and the strength of the driving plate is higher than the strength of the first slider; the first slider is used to be sleeved on the handle and to be slidably arranged with the guide rail; the driving plate is used to form a crank slider mechanism with the eccentric wheel, the driving plate is used to realize mechanical indication, and the driving plate is used to trigger the auxiliary switch.

[0026] With this structure and through the design of the drive plate, the output slider has sufficient strength to form a crank slider mechanism with the eccentric wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of a reclosing circuit breaker according to Embodiment 1 of the present application is shown;

[0029] Figure 2 A schematic diagram showing the reclosing circuit breaker after removing the upper cover in Embodiment 1 of the present application is shown;

[0030] Figure 3 A schematic diagram of a middle cover in a reclosing circuit breaker in Example 1 of the present application is shown;

[0031] Figure 4 A schematic diagram of an auxiliary accessory in a reclosing circuit breaker in Example 1 of the present application is shown;

[0032] Figure 5 A schematic diagram of the structure of the reclosing circuit breaker in Example 1 of the present application after components such as a DC motor are removed is shown;

[0033] Figure 6 A schematic diagram of the structure of the cooperation between the DC motor and the gear box in the reclosing circuit breaker in Example 1 of the present application is shown;

[0034] Figure 7 An exploded view of the cooperation between the DC motor and the gear box in the reclosing circuit breaker in Example 1 of the present application is shown;

[0035] Figure 8 The structure diagram of the driving board in the reclosing circuit breaker of Example 1 of the present application is shown;

[0036] Fig. 9 A diagram showing the position relationship between the output slider and the eccentric wheel when the reclosing circuit breaker of Example 1 of the present application is in the closed state;

[0037] Fig.10 A diagram showing the position relationship between the output slider and the eccentric wheel when the reclosing circuit breaker of Example 1 of the present application is in the open state. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, when a main feature is “above” or “below” a second feature, it can mean that the main feature and the second feature are in direct contact, or the main feature and the second feature are in indirect contact through an intermediate medium. Moreover, when a main feature is “above”, “above” or “above” a second feature, it can mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. When a main feature is “below”, “below” or “below” a second feature, it can mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is lower in level than the second feature. Example

[0043] like Figure 1-Figure 10 As shown, an embodiment of the present application provides a reclosing circuit breaker having an auxiliary accessory 800.

[0044] The reclosing circuit breaker includes a circuit breaker housing, a gear box 600, a DC motor 500, an operating mechanism, a contact assembly, an arc extinguishing assembly, and the like.

[0045] The circuit breaker housing includes a base 100, a cover 200 and an upper cover 300. Here, the base 100 is arranged below the cover 200, and the base 100 and the cover 200 are fastened by bolts. The upper cover 300 is arranged above the cover 200, and the upper cover 300 and the cover 200 are also fastened by bolts. Of course, in addition to this, bolts can be used to fasten all three, or other fastening methods can be used. No matter which method is used, as long as the stability of the three structures can be ensured.

[0046] Here, the cover body 200 includes a partition wall 201 and a side wall 202 surrounding the partition wall 201 . Here, the side wall 202 and the partition wall 201 form an upper space 203 , and the upper space 203 is located above the partition wall 201 .

[0047] The operating mechanism is fixed on the base 100. One end of the handle 400 of the operating mechanism of the circuit breaker penetrates the partition wall 201 and extends into the upper space. Here, there is enough space reserved on the partition wall 201 for the handle 400 to move. The handle 400 is located at one end of the upper space, that is, the extended end 401.

[0048] The DC motor 500 is a DC motor 500 having only one working direction.

[0049] The gear box 600 is arranged in the upper space and includes a first bracket 601 , a second bracket 602 , a guide rail 603 , a reduction gear set and an eccentric wheel 604 .

[0050] The first bracket 601 is fixed on the second bracket 602 , and a gear installation space is formed therebetween. The reduction gear set is arranged in the gear installation space.

[0051] Two guide rails 603 are arranged below the second bracket 602, and the guide rails 603 and the second bracket 602 are fixed. The output slider 700 is sleeved on the guide rails 603, so that the output slider 700 can slide along the guide rails 603.

[0052] The output part of the DC motor 500, that is, the output wheel, meshes with the input end of the reduction gear set, and the output end of the reduction gear set is connected to the eccentric wheel 604. Through the continuous output of the DC motor 500, the eccentric wheel 604 can be rotated around a rotation center. A crank slider mechanism is formed between the eccentric wheel 604 and the output slider 700, so that the output slider 700 can reciprocate with the rotation of the eccentric wheel 604. Since the output slider 700 is sleeved on the protruding end 401, the reciprocating sliding of the output slider 700 will drive the handle 400 to realize the opening and closing operation.

[0053] An indication hole 301 is provided on the upper cover 300, and a part of the output slider 700 extends to the bottom of the indication hole 301, and this part is the indication part. In this way, by moving the output slider 700 and presenting different positions on the indication hole 301, the mechanical indication of the opening and closing state of the circuit breaker can be realized. The indication mark here can be a pattern, color, text or ON, OFF.

[0054] There are many ways to form the output slider 700 here, which can be a completely integrated structure. A split structure can also be used. Taking the split structure as an example, the output slider 700 includes a first slider 701 and a drive plate 702. The strength of the drive plate 702 here is higher than that of the first slider 701. For example, the first slider 701 is a plastic part, and the drive plate 702 can be a metal part (such as an iron plate, a steel plate, etc.). Screws can be used to fasten the two. The guide rail 603 is in sliding cooperation with the first slider 701, and the indication function of the output slider 700, the transmission relationship with the eccentric wheel 604, and the triggering of the auxiliary switch 802, etc., are all completed by the drive plate 702.

[0055] A driving groove is provided on the driving plate 702, and the driving groove here consists of two parts, one part is the opening driving wall 704, and the other part is the closing driving wall 703. The eccentric wheel 604 is always in the driving groove during the rotation process. When the eccentric wheel 604 is pressed on the closing driving wall 703, it will push the output slider 700 so that the handle 400 performs the closing operation. When the eccentric wheel 604 pushes the opening driving wall 704, it will push the output slider 700 so that the handle 400 performs the opening operation.

[0056] The auxiliary accessory 800, after being triggered by the driving board 702 (that is, the output slider 700), can output a signal to other devices such as the host computer, other circuit breakers, equipment, handheld terminals, P, etc. Here, it is specifically implemented as follows: the auxiliary accessory 800 includes a connector 801 and an auxiliary switch 802, and the auxiliary switch 802 is electrically connected to the connector 801. The connector 801 is fixed on the cover 200, where the plug-in part of the connector 801 is exposed outside the cover 200, and other devices can be matched with the plug-in part of the connector 801 through an adapted plug, so that the state signal of the auxiliary switch 802 can be fed back to other devices. Here, when the output slider 700 moves to the corresponding handle 400 in the closing position, the auxiliary switch 802 is triggered by the driving board 702 (that is, the output slider 700). Of course, in addition to this, when the output slider 700 moves to the corresponding handle 400 in the opening position, the auxiliary switch 802 is triggered by the driving board 702 (that is, the output slider 700).

[0057] Here, the electrical connection between the auxiliary switch 802 and the connector 801 is completed through the circuit board 803. In order to facilitate the installation of the circuit board 803, a slot 210 is provided on the cover 200, and the circuit board 803 is inserted into the slot 210. Here, the slot 210 is close to a side wall 202, and the auxiliary switch 802 and the connector 801 are respectively arranged on two different surfaces of the circuit board 803. A mounting groove 2021 communicating with the outside is opened on the side wall 202, and the connector 801 is arranged in the mounting groove 2021 so that it can be exposed outside the cover 200. There are a first mounting protrusion 211 and a second mounting protrusion 212 near this side wall 202, where the first mounting protrusion 211 and the second mounting protrusion 212 are arranged at intervals, and the slot 210 is arranged on the first mounting protrusion 211 and the second mounting protrusion 212, which will be very convenient for the installation of the auxiliary accessory 800.

[0058] As a more preferred mode, the auxiliary switch 802 is a micro switch. Of course, in addition to this, the auxiliary switch 802 can also be a travel switch or other mechanical switches.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0060] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A reclosing circuit breaker with auxiliary accessories, comprising a cover body and an operating mechanism; an upper space is provided on the cover body, the operating mechanism is located below the cover body, and one end of a handle of the operating mechanism penetrates into the upper space; characterized in that: An output slider is arranged in the upper space, the output slider is sleeved on the handle, and the output slider and the handle move synchronously; the auxiliary accessories include a connector and an auxiliary switch, and the auxiliary switch is electrically connected to the connector; the connector is fixed on the cover body, and the plug-in part of the connector is exposed outside the cover body; the auxiliary switch is within the movement track of the output slider, and when the handle of the operating mechanism is in the closing state position or when the handle of the operating mechanism is in the opening state position, the output slider triggers the auxiliary switch.

2. A reclosing circuit breaker with auxiliary accessories according to claim 1, characterized in that: The auxiliary accessories also include a circuit board, and the auxiliary switch and the connector are fixed on the circuit board. The auxiliary switch and the connector are electrically connected through the circuit board.

3. A reclosing circuit breaker with auxiliary accessories according to claim 2, characterized in that: The cover body is provided with a slot, and the circuit board is inserted into the slot.

4. A reclosing circuit breaker with auxiliary accessories according to claim 3, characterized in that: The cover body includes a partition wall and a side wall surrounding the partition wall, and the upper space is formed by the side wall surrounding the partition wall; the circuit board is arranged near one of the side walls, and a mounting groove connected to the outside is opened on the side wall, and the connector is arranged on the mounting groove; the auxiliary switch and the connector are respectively located on two opposite surfaces of the circuit board.

5. A reclosing circuit breaker with auxiliary accessories according to claim 3, characterized in that: The cover body is provided with a first mounting protrusion and a second mounting protrusion, the first mounting protrusion and the second mounting protrusion are arranged at intervals, and the slots are opened on the first mounting protrusion and the second mounting protrusion.

6. A reclosing circuit breaker with auxiliary accessories according to any one of claims 1 to 5, characterized in that: The auxiliary switch is a micro switch or a travel switch.

7. A reclosing circuit breaker with auxiliary accessories according to any one of claims 1 to 5, characterized in that: A DC motor and a gear box are also provided in the cover body, and the gear box includes a reduction gear set and an eccentric wheel; the input end of the reduction gear set is connected to the output part of the DC motor, and the output end of the reduction gear set is connected to the eccentric wheel; the eccentric wheel is arranged to rotate, and the eccentric wheel and the output slider form a crank slider mechanism. Through the continuous output of the DC motor, the slider moves back and forth to realize the opening and closing operations of the handle.

8. A reclosing circuit breaker with auxiliary accessories according to claim 7, characterized in that: The gear box comprises a first bracket and a second bracket, the first bracket is fixed on the second bracket, and the reduction gear set is arranged between the first bracket and the second bracket; a guide rail is fixed below the second bracket, and the output slider is slidably arranged on the guide rail.

9. A reclosing circuit breaker with auxiliary accessories according to claim 8, characterized in that: It also includes an upper cover, which is fixed on the cover body and has an indication hole. The output slider has an indication part, and the output slider slides to different positions, so that the indication part changes in the indication hole, presenting a mechanical indication of the opening and closing state of the circuit breaker.

10. A reclosing circuit breaker with auxiliary accessories according to claim 9, characterized in that: The output slider includes a first slider and a driving plate, the driving plate is fixed to the first slider, and the strength of the driving plate is higher than the strength of the first slider; the first slider is used to be sleeved on the handle and to be slidably arranged with the guide rail; the driving plate is used to form a crank slider mechanism with the eccentric wheel, the driving plate is used to realize mechanical indication, and the driving plate is used to trigger the auxiliary switch.

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