Circuit breaker

Abstract

The utility model provides a circuit breaker, and relates to the technical field of low-voltage electrical appliances, the circuit breaker comprises a base, an operating member and a plug panel are arranged in the base side by side along a first direction, and an operating mechanism and a contact system are arranged on one side of the operating member in sequence in a linkage manner along a second direction. The rotating plane of the moving contact of the contact system is parallel to the plane formed by the second direction and the third direction, and the three directions are perpendicular to each other. The operating member drives the moving contact and the static contact of the contact system to contact or separate through the operating mechanism. The rotating plane of the moving contact is parallel to the plane formed by the second direction and the third direction, and the moving contact is rotatably arranged in the third direction so as to be close to or away from the static contact; corresponding components can be unfolded in the third direction, namely the width direction, are matched with the cabinet on the premise that the height and the length are not changed, are arranged in the width direction, and can contain components with larger sizes by increasing the size in the width direction so as to bear larger rated current and meet the requirement of the large rated current.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a circuit breaker. Background Art

[0002] Circuit breakers are common switching devices in everyday life, capable of carrying varying currents depending on their configuration. Currently, circuit breakers have relatively low rated currents, failing to meet the demand for higher rated currents. As the required rated current of a circuit breaker increases, the size of the corresponding components within the circuit breaker also increases, increasing the overall size of the circuit breaker. Since circuit breakers are designed to plug into corresponding cabinets, their dimensions cannot be arbitrarily changed; otherwise, they will not fit the cabinet, creating difficulties in meeting the demand for higher rated currents. Utility Model Content

[0003] The purpose of this application is to address the deficiencies in the above-mentioned prior art and provide a circuit breaker that can meet the needs of large rated current while being compatible with a cabinet.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0005] In one aspect of an embodiment of the present application, a circuit breaker is provided, comprising a base, wherein an operating member and a plug-in panel are arranged side by side in a first direction within the base, and an operating mechanism and a contact system are arranged in sequence and in linkage on one side of the operating member in a second direction, wherein a rotation plane of a movable contact of the contact system is parallel to a plane formed by the second direction and a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0006] Optionally, the moving contact has two moving contact points arranged along the first direction, and the static contact correspondingly has two static contact points arranged along the first direction, and the moving contacts correspond to the static contacts one to one.

[0007] Optionally, there are two plug-in panels, which are arranged along the third direction, and each of the plug-in panels is provided with at least two wiring terminals for connecting a load.

[0008] Optionally, two parallel plug-in board groups corresponding to the two plug-in panels are formed at the other end of the base along the second direction, and the two groups of plug-in board groups are arranged along the first direction for respectively performing positive and negative wiring.

[0009] Optionally, each of the plug strip groups includes two plug strips arranged side by side and in parallel along the third direction.

[0010] Optionally, a first terminal block connected to the terminal, as well as a first flexible connection, an electromagnetic tripping mechanism, a second flexible connection, a double metal, a third flexible connection, and a bus are further provided in the base along the second direction. The electromagnetic tripping mechanism is located on one side of the operating mechanism and the contact system along the third direction. The current flows into the positive terminal and flows into the negative plug-in board group in sequence through the first terminal block, the first flexible connection, the electromagnetic tripping mechanism, the static contact, the moving contact, the second flexible connection, the double metal, the third flexible connection, and the bus.

[0011] Optionally, a second wiring board is further provided in the base, and the second wiring board is located on one side of the first wiring board along the third direction, and the current flows from the positive pole plug-in board group through the second wiring board to the negative pole terminal.

[0012] Optionally, an electric drive mechanism and an inner handle are sequentially arranged between the operating member and the operating mechanism along the second direction, a sector gear is formed on the inner handle, and the electric drive mechanism is connected to the operating mechanism via the sector gear.

[0013] Optionally, the electric drive mechanism includes a motor and a gear set that transmits power to the motor, the gear set includes a plurality of gears that mesh with each other in sequence, and the plurality of gears are all meshed and transmitted in a plane formed by the second direction and the third direction.

[0014] Optionally, an arc extinguishing chamber is further provided between the contact system and the first plug-in board group and the second plug-in board group, and a plurality of grids of the arc extinguishing chamber are stacked and arranged along the third direction.

[0015] The beneficial effects of this application include:

[0016] The present application provides a circuit breaker, which drives the operating mechanism to move through an operating member to drive the movable contact and the static contact of the contact system to contact or separate to complete the closing and opening of the circuit breaker; the rotation plane of the movable contact is parallel to the plane formed by the second direction and the third direction, and the movable contact of the contact system is arranged to rotate along the third direction to move closer to or away from the static contact; when arranged in this way, the corresponding components can be expanded along the third direction (width direction) and adapted to the cabinet without changing the height and length. The layout and arrangement are carried out along the width direction. By increasing the dimension in the width direction, larger components can be accommodated to carry a larger rated current and meet the needs of large rated current. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 One of the structural schematic diagrams of the circuit breaker provided in the embodiment of the present application;

[0019] Figure 2 The second structural diagram of the circuit breaker provided in the embodiment of the present application;

[0020] Figure 3 The third structural diagram of the circuit breaker provided in the embodiment of the present application;

[0021] Figure 4 A schematic structural diagram of a circuit breaker operating mechanism and a contact system provided in an embodiment of the present application;

[0022] Figure 5 This is one of the structural schematic diagrams of the circuit breaker electric drive mechanism provided in an embodiment of the present application;

[0023] Figure 6 This is the second structural diagram of the circuit breaker electric drive mechanism provided in an embodiment of the present application.

[0024] Icons: 10-base; 11-electric drive mechanism; 110-motor; 111-first gear; 112-second gear; 113-third gear; 114-fourth gear; 115-fifth gear; 116-sixth gear; 117-seventh gear; 118-eighth gear; 121-handle connecting rod; 122-inner handle; 122a-sector gear; 123-connecting rod; 124-third flexible connection; 125-bus; 126-second terminal block; 127-first flexible connection Connection; 128-second flexible connection; 129-first terminal block; 13A-operating mechanism; 13B-contact system; 131-moving contact; 131a-moving contact; 132-static contact; 132a-static contact; 14-double metal; 15-arc extinguishing chamber; 161-first plug-in board group; 162-second plug-in board group; 17-electromagnetic tripping mechanism; 18-operating part; 19-plug-in panel; 190-terminal; F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. It should be noted that, unless there is a conflict, the various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0027] 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, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] The rated current of the existing 1U circuit breaker is 125A, which cannot meet the demand for a rated current of 250A. When the required rated current increases, the size of the internal components of the circuit breaker will also increase accordingly, and the overall volume of the circuit breaker will increase accordingly. The 1U circuit breaker is used to plug into a 1U cabinet. The unit used by the American Electronics Industries Alliance to calibrate computer room equipment such as servers and network switches is called a rack unit. A rack unit is called 1U, and 1U has a specific height. Therefore, when the rated current increases, the height of the 1U circuit breaker cannot be changed to facilitate adaptation to the 1U cabinet; the length of the 1U circuit breaker generally does not change, so it is necessary to change the layout of the 1U circuit breaker in the width direction to meet the demand for large rated current.

[0032] Based on this, one aspect of the embodiment of this application is to refer to Figures 1 to 3 A circuit breaker is provided, comprising a base 10. An operating member 18 and a plug-in panel 19 are arranged side by side in a first direction F1 in the base 10. An operating mechanism 13A and a contact system 13B are sequentially and linkedly arranged on one side of the operating member 18 in a second direction F2. The rotation plane of a movable contact 131 of the contact system 13B is parallel to a plane formed by the second direction F2 and a third direction F3. The first direction F1, the second direction F2, and the third direction F3 are perpendicular to each other.

[0033] The circuit breaker of this application is based on a 1U circuit breaker, which is adapted to be plugged into a 1U cabinet in a first direction F1 (height direction). Therefore, the circuit breaker of this application has the height dimension of a 1U circuit breaker in the first direction F1 and the length dimension of a 1U circuit breaker in the second direction F2 (length direction). In other words, without changing the height and length of the 1U circuit breaker, the circuit breaker of this application is arranged along the third direction F3 (width direction) to meet the product's high rated current requirements.

[0034] An operating member 18 is provided on one side of a plug-in panel 19 within the base 10 of the circuit breaker of the present application. For example, the operating member 18 is located above the plug-in panel 19 along a first direction F1. The operating member 18 is connected to an inner handle 122 via a handle connecting rod 121. The inner handle 122 is then linked to an operating mechanism 13A via a connecting rod 123 to realize manual closing and opening of the circuit breaker.

[0035] The circuit breaker of the present application can also be electrically operated by the electric drive mechanism 11 to realize closing and opening. The electric drive mechanism 11 and the inner handle 122 are arranged in sequence between the operating member 18 and the operating mechanism 13A along the second direction F2. The inner handle 122 is formed with a sector gear 122a. The electric drive mechanism 11 is connected to the operating mechanism 13A through the sector gear 122a. The contact system 13B is installed on the operating mechanism 13A. The electric drive mechanism 11 drives the operating mechanism 13A to operate to drive Figure 4The moving contact 131 and the static contact 132 of the contact system 13B are in contact or separated, completing the closing and opening of the circuit breaker under the electric operation drive.

[0036] Depend on Figure 1 It can be seen that the moving contact 131 of the contact system 13B is arranged to rotate along the third direction F3 to approach or move away from the static contact 132; the rotation plane of the moving contact 131 is parallel to the plane formed by the second direction F2 and the third direction F3; when arranged in this way, the corresponding components can be unfolded along the third direction F3. Without changing the height and length, by increasing the dimension in the width direction, larger components can be accommodated to carry a larger rated current. On the premise of adapting to the cabinet, the layout between the components can be optimized to meet the needs of large rated current.

[0037] Furthermore, the electric drive mechanism 11 includes a motor 110 and a gear set that drives the motor 110. The gear set transmits the power of the motor 110 to the sector gear 122a through a series of gears. The sector gear 122 a The operating mechanism 13A is driven to move by the connecting rod 123 , thereby driving the movable contact 131 of the contact system 13B to rotate.

[0038] For example, refer to Figure 5 、 Figure 6 As shown, the gear set includes a first gear 111 connected to the motor 110, a second gear 112 meshing with the first gear 111, a third gear 113 coaxially arranged with the second gear 112, a fourth gear 114 meshing with the third gear 113, a fifth gear 115 coaxially arranged with the fourth gear 114, a sixth gear 116 meshing with the fifth gear 115, a seventh gear 117 coaxially driven with the sixth gear, an eighth gear 118 meshing with the seventh gear 117, and the eighth gear 118 and the sector gear 122a meshing and driving; through the above arrangement, each gear is driven in sequence to transmit the power of the motor 110 to the sector gear 122a of the inner handle 122, and the operating mechanism 13A is driven by the sector gear 122a.

[0039] Depend on Figure 5 、 Figure 6 It can also be seen from the figure that the above gears rotate in the plane formed by the second direction F2 and the third direction F3. In other words, the rotation plane of the gears is parallel to the plane formed by the second direction F2 and the third direction F3.

[0040] In addition, the contact system 13B of the present application is a double contact mechanism, such as Figure 4 As shown, the moving contact 131 has two moving contacts 131a arranged along the first direction F1, and the static contact 132 correspondingly has two static contacts 132a arranged along the first direction F1. The moving contacts 131a and the static contacts 132a correspond one to one to realize double-contact closing and opening.

[0041] like Figure 2 As shown, two plug-in panels 19 are formed at one end of the base 10 along the second direction F2. The two plug-in panels 19 are arranged along the third direction F3. Each plug-in panel 19 is provided with at least two wiring terminals 190 for connecting a load.

[0042] For example, in the present application, each plug-in panel 19 is formed with two wiring terminals, and the two wiring terminals are staggered along the first direction F1 and the third direction F3 respectively.

[0043] The plug-in panel 19 is used to correspond to the plug-in board group, such as Figure 3 As shown, two parallel plug-in board groups corresponding to the two plug-in panels 19 are formed at the other end of the base 10 along the second direction F2. The two plug-in board groups are arranged along the first direction F1 for respectively performing positive and negative wiring.

[0044] The two plugboard groups are a first plugboard group 161 and a second plugboard group 162 . The first plugboard group 161 is a negative pole, and the second plugboard group 162 is a positive pole. The first plugboard group 161 and the second plugboard group 162 are arranged along a first direction F1 .

[0045] The first plug-in board group 161 corresponds to the connection terminal 190 of the positive plug-in panel 19 , and the second plug-in board group 162 corresponds to the connection terminal 190 of the negative plug-in panel 19 .

[0046] To form the circuit breaker's current path, base 10 further includes a first terminal block 129 connected to terminal 190, along the second direction F2, a first flexible connector 127, an electromagnetic trip mechanism 17, a second flexible connector 128, a bimetal 14, a third flexible connector 124, and a busbar 125. Electromagnetic trip mechanism 17 is located to one side of operating mechanism 13A and contact system 13B along the third direction F3. For example, electromagnetic trip mechanism 17 is a solenoid-type electromagnetic release.

[0047] The current flows into the positive terminal 190, passes through the first terminal block 129, the first flexible connector 127, the electromagnetic tripping mechanism 17, and the static contact 132 in sequence. After the product is closed, the current flows through the moving contact 131, the second flexible connector 128, the double metal 14, the third flexible connector 124, and the bus 125 to the first plug-in board group 161 of the negative pole.

[0048] A second terminal block 126 is also provided in the base 10. The second terminal block 126 is located on one side of the first terminal block 129 along the third direction F3. Since the second plug-in board group 162 is a positive direct-through pole, the current flows from the positive second plug-in board group 162 directly through the second terminal block 126 into the negative terminal 190.

[0049] For example, the first plugboard group 161 and the second plugboard group 162 each include two plugboards, which are arranged side by side and in parallel along the third direction F3. The two plugboards can be separated and connected in parallel, or can be arranged as a whole.

[0050] In addition, an arc-extinguishing chamber 15 is provided between the contact system 13B and the first and second plug-in board groups 161 and 162. The multiple grids of the arc-extinguishing chamber 15 are stacked along the third direction F3, with the grid entrances facing the moving contacts 131 and the stationary contacts 132, to facilitate the introduction of the arc into the arc-extinguishing chamber 15 for arc extinguishing. Furthermore, the arrangement direction of the individual grids is parallel to the second direction F2 to meet the space requirements for a reasonable layout.

[0051] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A circuit breaker, characterized in that: The circuit breaker comprises a base (10), an operating member (18) and a plug-in panel (19) are arranged side by side in the base (10) along a first direction (F1), an operating mechanism (13A) and a contact system (13B) are arranged in sequence and linked on one side of the operating member (18) along a second direction (F2), a rotation plane of a movable contact (131) of the contact system (13B) is parallel to a plane formed by the second direction (F2) and a third direction (F3), and the first direction (F1), the second direction (F2) and the third direction (F3) are perpendicular to each other.

2. The circuit breaker according to claim 1, wherein: The moving contact (131) has two moving contact points (131a) arranged along the first direction (F1), and the static contact (132) correspondingly has two static contact points (132a) arranged along the first direction (F1), and the moving contact points (131a) and the static contact points (132a) correspond one to one.

3. The circuit breaker according to claim 1, wherein: There are two plug-in panels (19), which are arranged along the third direction (F3). Each plug-in panel (19) is provided with at least two connection terminals (190) for connecting a load.

4. The circuit breaker according to claim 3, characterized in that A first plug-in board group (161) and a second plug-in board group (162) are formed at the other end of the base (10) along the second direction (F2), which correspond to the two plug-in panels (19) and are connected in parallel. The first plug-in board group (161) and the second plug-in board group (162) are arranged along the first direction (F1) for respectively performing positive and negative pole wiring.

5. The circuit breaker according to claim 4, characterized in that The first plug-in board group (161) and the second plug-in board group (162) each include two plug-in boards arranged side by side and connected in parallel along the third direction (F3).

6. The circuit breaker according to claim 4, characterized in that A first wiring board (129) connected to the wiring terminal (190), a first soft connection (127), an electromagnetic tripping mechanism (17), a second soft connection (128), a double metal (14), a third soft connection (124), and a busbar (125) are further provided in the base (10) along the second direction (F2). The electromagnetic tripping mechanism (17) is located on one side of the operating mechanism (13A) and the contact system (13B) along the third direction (F3). Current flows into the wiring terminal (190) of the positive pole, and flows into the first plug-in board group (161) of the negative pole in sequence through the first wiring board (129), the first soft connection (127), the electromagnetic tripping mechanism (17), the static contact (132), the moving contact (131), the second soft connection (128), the double metal (14), the third soft connection (124), and the busbar (125).

7. The circuit breaker according to claim 6, characterized in that A second wiring board (126) is also provided in the base (10), and the second wiring board (126) is located on one side of the first wiring board (129) along the third direction (F3). Current flows from the second plug-in board group (162) of the positive pole through the second wiring board (126) to the wiring terminal (190) of the negative pole.

8. The circuit breaker according to any one of claims 1 to 7, characterized in that: An electric drive mechanism (11) and an inner handle (122) are sequentially arranged between the operating member (18) and the operating mechanism (13A) along the second direction (F2); a sector gear (122a) is formed on the inner handle (122); and the electric drive mechanism (11) is connected to the operating mechanism (13A) via the sector gear (122a).

9. The circuit breaker according to claim 1, wherein: An electric drive mechanism (11) is also provided in the base (10), and the electric drive mechanism (11) includes a motor (110) and a gear set that drives the motor (110), and the gear set includes a plurality of gears that mesh with each other in sequence, and the plurality of gears are all meshed and driven in a plane formed by the second direction (F2) and the third direction (F3).

10. The circuit breaker according to any one of claims 4 to 7, characterized in that: An arc extinguishing chamber (15) is further provided between the contact system (13B) and the first plug-in board group (161) and the second plug-in board group (162), and a plurality of grids of the arc extinguishing chamber (15) are stacked and arranged along the third direction (F3).

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