Rapid closing device and circuit breaker

Abstract

The invention discloses a quick closing device and a circuit breaker, and relates to the low-voltage electrical technical field. The invention provides a quick closing device, which comprises a handle, a moving contact assembly and a quick closing piece which are rotatably arranged in a shell, and the quick closing piece is movably arranged in the shell along the width direction of a circuit breaker; the moving contact assembly comprises a moving contact and a mechanism seat which are coaxially arranged in the shell; the handle drives the moving contact and the mechanism base to rotate towards the closing direction, so that the moving contact abuts against the quick closing piece to store energy, and the handle continues to drive the mechanism base to rotate until the mechanism base abuts against the quick closing piece and drives the quick closing piece to move in the width direction of the circuit breaker, so that abutting between the quick closing piece and the moving contact is relieved. And the moving contact releases energy and continuously rotates towards the closing direction. According to the rapid closing device, the moving contact can directly abut against the rapid closing piece to achieve energy storage of the moving contact, the distance size error between the moving contact and the static contact is reduced, and the closing precision of the moving contact and the static contact is improved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically, to a fast closing device and a circuit breaker. Background Technology

[0002] In the generation, transmission, and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high- and low-voltage electrical equipment, with low-voltage circuit breakers being a widely used type of electrical appliance. Circuit breakers are used to distribute electrical energy and can disconnect the circuit when they experience severe overloads, short circuits, or undervoltage faults.

[0003] Existing fast closing devices require contact with the contact seat to restrict the contact seat from driving the moving contact toward the stationary contact, thereby achieving energy storage in the moving contact. This kind of cooperation results in multiple dimensional errors in the distance between the moving and stationary contacts, including the contact seat, leading to a large distance error between the moving and stationary contacts and reducing the accuracy of closing the moving and stationary contacts. Summary of the Invention

[0004] The purpose of this invention is to provide a fast closing device that improves the utilization rate of the internal space of the circuit breaker while enabling the moving contact to directly contact the fast closing component to realize the energy storage of the moving contact, reducing the distance error between the moving contact and the stationary contact, and improving the closing accuracy of the moving contact and the stationary contact.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In one aspect, the present invention provides a quick-closing device, comprising a handle rotatably mounted in a housing, a moving contact assembly, and a quick-closing component, the quick-closing component being movably disposed within the housing along the width direction of the circuit breaker; the moving contact assembly comprising a moving contact and a mechanism seat coaxially disposed within the housing;

[0007] The handle drives the moving contact and the mechanism base to rotate in the closing direction, so that the moving contact abuts against the quick-closing element to store energy. The handle continues to drive the mechanism base to rotate until the mechanism base abuts against the quick-closing element and drives the quick-closing element to move along the width direction of the circuit breaker, so that the quick-closing element releases the contact with the moving contact, the moving contact releases energy and continues to rotate in the closing direction.

[0008] Optionally, the housing is provided with a limiting groove arranged along the closing direction of the moving contact. The quick-closing component includes a fixing plate, which can be partially inserted into the limiting groove. The end of the fixing plate facing the moving contact has a first abutting part, which protrudes from the limiting groove and is used to abut against the moving contact.

[0009] Optionally, the housing has two oppositely arranged snap-fit ​​grooves, which are arc-shaped grooves; the quick-connect component includes a fixing plate, and a rotating shaft is provided through the fixing plate along the thickness direction at one end near the snap-fit ​​groove. The opposite sides of the rotating shaft are respectively snapped into the two snap-fit ​​grooves. The fixing plate can move along the width direction of the circuit breaker with the rotating shaft as the rotation center; the fixing plate has a first abutting part at one end facing the moving contact, which is used to abut against the moving contact.

[0010] Optionally, the quick-closing component also includes a guide plate, which is vertically disposed on the side edge of the fixed plate and has a preset distance from the first abutting part; when the mechanism seat abuts against the quick-closing component, it can drive the guide plate to move along the width direction of the circuit breaker, thereby driving the fixed plate to move along the width direction of the circuit breaker, so that the first abutting part is released from contact with the moving contact.

[0011] Optionally, the fixing plate is provided with a second abutment portion along the width direction of the circuit breaker, and the second abutment portion is perpendicular to the plate surface of the fixing plate; the second abutment portion is used to abut against the mechanism seat.

[0012] Optionally, the mechanism base is provided with a guide portion corresponding to the second abutment portion, and the guide portion can contact the side wall of the second abutment portion; the thickness of the guide portion gradually decreases along the closing direction of the moving contact; when the handle drives the mechanism base to rotate in the closing direction, the side wall of the second abutment portion can slide along the guide portion and drive the guide portion to move along the width direction of the circuit breaker.

[0013] Optionally, the fixed plate is provided with an elastic part on the side away from the guide plate. When the fixed plate moves along the width direction of the circuit breaker, the elastic part can abut against the inner wall of the housing to store energy. When the moving contact moves in the opening direction to drive the mechanism seat to separate from the quick-closing member, the elastic part releases energy to drive the fixed plate to reset.

[0014] Optionally, the quick closing device also includes a pad, and a limit groove is provided on the pad; a contact plate is also vertically provided on the surface of the pad, and the contact plate protrudes from the edge of the limit groove to support the fixing plate.

[0015] Optionally, the limiting groove includes a rotating groove and a fixed groove arranged side by side along the closing direction, the depth of the rotating groove being greater than the depth of the fixed groove; the rotating groove is used to insert a guide plate, and the fixed groove is used to insert a fixed plate; the side of the fixed groove away from the rotating groove extends toward the side away from the pad, so as to limit and fix the end of the fixed plate away from the first abutment part.

[0016] Optionally, the quick-closing device also includes a connecting rod; one end of the connecting rod is connected to the handle and the other end is connected to the moving contact assembly, and the handle drives the moving contact assembly to rotate via the connecting rod.

[0017] In another aspect, the present invention provides a circuit breaker including a housing, a stationary contact, and a fast closing device. The stationary contact and the fast closing device are installed inside the housing. The fast closing device includes a fast closing element and a mechanism seat. The fast closing element is disposed between the mechanism seat and the stationary contact. The moving contact of the fast closing device is driven to rotate to close or open with the stationary contact.

[0018] The beneficial effects of the present invention include at least one of the following:

[0019] One aspect of this application provides a fast closing device, including a handle rotatably mounted within a housing, a moving contact assembly, and a quick-closing element. The quick-closing element is movably disposed within the housing along the width direction of the circuit breaker to save space along the length direction of the circuit breaker, making the internal component layout of the circuit breaker more compact and thus improving the space utilization rate of the circuit breaker. The moving contact assembly includes a moving contact and a mechanism seat coaxially disposed within the housing. The handle drives the moving contact and the mechanism seat to rotate in the closing direction, causing the moving contact to abut against the quick-closing element to store energy. The handle continues to drive the mechanism seat to rotate until the mechanism seat abuts against the quick-closing element and drives the quick-closing element to move along the width direction of the circuit breaker, so that the quick-closing element releases the contact with the moving contact, the moving contact releases energy, and continues to rotate in the closing direction to close with the stationary contact. The above-mentioned fast closing device improves the internal space utilization rate of the circuit breaker while enabling the moving contact to directly abut against the quick-closing element to achieve energy storage in the moving contact, reducing the distance dimensional error between the moving contact and the stationary contact, and improving the closing accuracy of the moving contact and the stationary contact.

[0020] Another aspect of this application provides a circuit breaker, including a housing, a stationary contact, and a fast-closing device. The stationary contact and the fast-closing device are installed within the housing. The fast-closing device includes a quick-closing element and a mechanism seat, with the quick-closing element disposed between the mechanism seat and the stationary contact. The moving contact of the fast-closing device is driven to rotate to close or open with the stationary contact. The aforementioned circuit breaker enables rapid and precise closing of the moving and stationary contacts, improving the reliability of the circuit breaker. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of a circuit breaker provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of the fast closing device provided in the embodiment of the present invention, showing the contact between the moving contact and the fast closing component;

[0024] Figure 3 This is a schematic diagram of the structure of the moving contact and stationary contact of the fast closing device provided in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the fast closing device provided in the embodiment of the present invention, showing the closing of the moving contact and the stationary contact.

[0026] Figure 5 A schematic diagram of the structure for preparing energy release from the moving contact of the fast closing device provided in the embodiment of the present invention;

[0027] Figure 6 This is one of the structural schematic diagrams of the pad of the fast closing device provided in the embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the structure of the quick-closing component of the quick-closing device provided in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the mechanism base of the fast closing device provided in an embodiment of the present invention;

[0030] Figure 9 This is a second schematic diagram of the structure of the pad of the fast closing device provided in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the assembly of the limiting groove and the quick-closing component of the fast closing device provided in an embodiment of the present invention;

[0032] Figure 11 This is the second schematic diagram of the circuit breaker provided in an embodiment of the present invention.

[0033] Icons: 100-Quick closing device; 101-Handle; 1011-Linking rod; 102-Moving contact assembly; 1021-Moving contact; 1022-Mechanism base; 1022a-Guide part; 103-Quick closing part; 1031-Fixing plate; 1031a-Rotating shaft; 1032-First abutment part; 1033-Guide plate; 1034-Second abutment part; 1035-Elastic part; 104-Push plate; 1041-Boss; 1042-Contact plate; 1043-Rotating groove; 1044-Fixing groove; 1045-Snap-fit ​​groove; 200-Circuit breaker; 201-Housing; 202-Stationary contact; a-Length direction; b-Width direction; c-Height direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and 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 should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they 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 can be slightly tilted.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Please refer to Figure 1 and Figure 2In one aspect, this application provides a quick closing device 100, including a handle 101 rotatably mounted in a housing 201, a moving contact assembly 102, and a quick-closing member 103. The quick-closing member 103 is movably disposed in the housing 201 along the width direction b of the circuit breaker 200. The moving contact assembly 102 includes a moving contact 1021 and a mechanism seat 1022 coaxially disposed in the housing 201.

[0041] like Figure 2 As shown, the handle 101 drives the moving contact 1021 and the mechanism base 1022 to rotate in the closing direction, so that the moving contact 1021 abuts against the quick-closing member 103 to store energy. The handle 101 continues to drive the mechanism base 1022 to rotate until the mechanism base 1022 abuts against the quick-closing member 103 and drives the quick-closing member 103 to move along the width direction b of the circuit breaker 200, so that the quick-closing member 103 releases the contact with the moving contact 1021, the moving contact 1021 releases energy and continues to rotate in the closing direction.

[0042] Among them, such as Figure 11 As shown, the length direction a of the circuit breaker 200 is the direction of connection between the two terminals of the circuit breaker 200; the width direction b of the circuit breaker 200 is parallel to the rotation axis of the moving contact 1021; the height direction c, length direction a and width direction b of the circuit breaker 200 are perpendicular to each other.

[0043] Specifically, the quick closing device 100 includes a handle 101, a moving contact assembly 102, and a quick closing component 103. The handle 101 is connected to the moving contact assembly 102. The moving contact assembly 102 includes a moving contact 1021. By operating the handle 101, the moving contact 1021 can make contact with the stationary contact 202, thereby achieving closing.

[0044] The moving contact assembly 102 also includes a mechanism seat 1022 coaxially arranged with the moving contact 1021. The moving contact 1021 and the mechanism seat 1022 can be driven to rotate together in the closing direction by operating the handle 101.

[0045] like Figure 2As shown, in order to achieve rapid closing of the moving contact 1021 and the stationary contact 202, after the handle 101 drives the moving contact 1021 and the mechanism base 1022 to move a certain distance in the closing direction, the moving contact 1021 can abut against the quick-closing member 103. At this time, if the handle 101 is continued to be operated, the moving contact 1021 can no longer move in the closing direction and will be forced to store energy. Because the size of the mechanism base 1022 is small, when the moving contact 1021 abuts against the quick-closing member 103, the mechanism... The base 1022 is temporarily unaffected by the quick-closing member 103 and continues to move in the closing direction driven by the handle 101. After the base 1022 has moved a certain distance, it can contact the quick-closing member 103 and drive the quick-closing member 103 to move along the width direction b of the circuit breaker 200. During the movement, the quick-closing member 103 can release contact with the moving contact 1021. At this time, the moving contact 1021 can quickly release energy and move in the closing direction to contact the stationary contact 202 for closing.

[0046] Existing fast-closing devices require contact with the contact seat to restrict the movement of the moving contact towards the stationary contact, thereby storing energy in the moving contact. This arrangement results in a large dimensional error in the distance between the moving and stationary contacts, including the contact seat, leading to a decrease in the closing accuracy. In contrast, the fast-closing device 100 of this application allows the moving contact 1021 to directly contact the fast-closing component 103 for energy storage. When calculating the distance between the moving contact 1021 and the stationary contact 202, only the machining errors of the fast-closing component 103 and the moving contact 1021 need to be considered, avoiding the influence of other component errors on the calculated distance between the moving and stationary contacts, thus improving the closing accuracy.

[0047] Meanwhile, since the circuit breaker 200 contains components such as a magnetic trip unit and a stationary contact 202, and the quick-closing member 103 is located between the mechanism base 1022 and the stationary contact 202, in order to improve the space utilization inside the circuit breaker 200 and make the layout between the components more compact, the quick-closing member 103 extends along the width direction b of the circuit breaker 200 to save space in the length direction a of the circuit breaker 200; during the energy release process of the moving contact 1021, the quick-closing member 103 moves away from the moving contact 1021. One end of 21 is the rotation center, so that the quick-closing member 103 moves along the width direction b of the circuit breaker 200. That is, when the quick-closing member 103 releases energy, it moves along the thickness direction of the housing 201 of the circuit breaker 200, so that the moving contact 1021 and the stationary contact 202 can be quickly closed. Since the quick-closing member 103 extends along the width direction b of the circuit breaker 200, when the quick-closing member 103 releases energy, its rotation direction is about 75 degrees to 105 degrees from the rotation direction of the moving contact 1021 when it releases energy, thereby improving the internal space utilization of the circuit breaker 200.

[0048] It should be noted that, in one possible implementation of this application, firstly, as... Figures 2 to 5 As shown, the fast closing device 100 also includes a connecting rod 1011; one end of the connecting rod 1011 is connected to the handle 101, and the other end is connected to the moving contact assembly 102. The handle 101 drives the moving contact assembly 102 to rotate via the connecting rod 1011. The connecting rod 1011 makes the rotation of the handle 101 and the moving contact assembly 102 more stable and reliable, thus improving the stability and reliability of the transmission connection of the fast closing device 100.

[0049] Second, in one specific embodiment of this application, the quick-closing component 103 is fixed by a limiting groove. The housing 201 is provided with a limiting groove arranged along the closing direction of the moving contact 1021. The quick-closing component 103 includes a fixing plate 1031, which can be partially inserted into the limiting groove. The fixing plate 1031 has a first abutting part 1032 at one end facing the moving contact 1021. The first abutting part 1032 protrudes outside the limiting groove and is used to abut against the moving contact 1021.

[0050] In one possible implementation of this application, please refer to Figure 9 and Figure 10 The quick-connect component 103 can also be limited and fixed by hinged connection via a rotating shaft 1031a. The housing 201 has two oppositely arranged snap-fit ​​grooves 1045, which are arc-shaped grooves; the quick-connect component 103 includes a fixing plate 1031, and a rotating shaft 1031a is inserted through the fixing plate 1031 near the snap-fit ​​groove 1045 along the plate thickness direction. The opposite sides of the rotating shaft 1031a are respectively snapped into the two snap-fit ​​grooves 1045. The fixing plate 1031 can move along the width direction b of the circuit breaker 200 with the rotating shaft 1031a as the rotation center. Figure 9 As shown, since the snap-fit ​​groove 1045 is an arc-shaped groove, it can be well snapped into the outer wall of the rotating shaft 1031a, allowing the rotating shaft 1031a to rotate along the inner wall of the snap-fit ​​groove 1045. While ensuring the stability of the connection between one end of the fixing plate 1031 and the limiting groove, it also drives the fixing plate 1031 to move towards the side away from the limiting groove, thereby realizing the release of energy by the moving contact 1021. The end of the fixing plate 1031 facing the moving contact 1021 has a first abutting part 1032, which is used to abut against the moving contact 1021.

[0051] It should be noted that, in addition to setting the arc-shaped snap-fit ​​groove 1045, protruding plates (not shown in the figure) can also be set on opposite sides of the end of the limiting groove away from the mechanism seat 1022. The protruding plates extend along the width direction b of the circuit breaker 200. Mounting holes are opened on the protruding plates. The opposite ends of the rotating shaft 1031a can be respectively inserted into the mounting holes, so that the rotating shaft 1031a can rotate along the inner wall of the mounting hole, thereby driving the fixed plate 1031 to move toward the side away from the limiting groove, so as to realize the release of energy of the moving contact 1021.

[0052] This application does not impose any restrictions on the specific connection method between the limiting groove and the end of the fixing plate 1031 away from the mechanism seat 1022. The connection relationship between the fixing plate 1031 and the limiting groove can be plug-in or hinged, as long as it can ensure that the end of the limiting groove away from the mechanism seat 1022 can serve as the rotation center to drive the fixing plate 1031 to rotate toward the side away from the limiting groove while it is falling off.

[0053] Third, when the quick-connect component 103 is fixed by the limiting groove, in one possible embodiment of this application, the limiting groove can be directly disposed on the inner wall of the housing 201; in another possible embodiment of this application, in order to adapt to the placement position of the moving contact 1021 assembly and other components, a pad 104 can also be disposed inside the housing 201, and the limiting groove can be disposed on the pad 104. This application does not impose any restrictions on the specific placement area of ​​the limiting groove, as long as it can satisfy the movement coordination with the moving contact assembly 102 while achieving the fixed positioning of the quick-connect component 103.

[0054] When the quick-connect component 103 is hinged and fixed by the pivot 1031a, in one embodiment of this application, a pad 104 can be provided inside the housing 201, and a snap-fit ​​groove 1045 protrudes from the pad 104; in another embodiment of this application, the snap-fit ​​groove 1045 can also be provided on the arc-blocking plate of the circuit breaker 200 to improve the flexibility of the use of the components in the circuit breaker 200 and save production costs; of course, in another embodiment of this application, the snap-fit ​​groove 1045 can also be directly provided on the cover plate of the circuit breaker 200.

[0055] The fast closing device 100 provided in this application includes a handle 101 rotatably mounted in a housing 201, a moving contact assembly 102, and a quick-closing member 103. The quick-closing member 103 is movably disposed in the housing 201 along the width direction b of the circuit breaker 200. The moving contact assembly 102 includes a moving contact 1021 and a mechanism seat 1022 coaxially disposed in the housing 201. The handle 101 drives the moving contact 1021 and the mechanism seat 1022 to rotate in the closing direction, so that the moving contact 1021 abuts against the quick-closing member 103 to store energy. The handle 101 continues to drive the mechanism seat 1022 to rotate until the mechanism seat 1022 abuts against the quick-closing member 103 and drives the quick-closing member 103 to move along the width direction b of the circuit breaker 200, so that the quick-closing member 103 releases the contact with the moving contact 1021, the moving contact 1021 releases energy and continues to rotate in the closing direction to close with the stationary contact 202. The aforementioned fast closing device 100 improves the utilization rate of the internal space of the circuit breaker 200, while enabling the moving contact 1021 to directly abut against the fast closing member 103 to realize the energy storage of the moving contact 1021, reducing the distance dimension error between the moving contact 1021 and the stationary contact 202, and improving the closing accuracy of the moving contact 1021 and the stationary contact 202.

[0056] In one possible implementation of this application, such as Figure 7 As shown, the fixed plate 1031 has a first abutting portion 1032 at one end facing the moving contact 1021, and the first abutting portion 1032 is used to abut against the moving contact 1021.

[0057] Specifically, such as Figure 7 As shown, the quick-closing component 103 includes a fixing plate 1031, which extends along the closing direction of the moving contact 1021. The fixing plate 1031 has a first abutment portion 1032 at one end facing the moving contact 1021. When the handle 101 drives the moving contact assembly 102 to move a certain distance in the closing direction, the moving contact 1021 can abut against the first abutment portion 1032 and begin storing energy. Figure 2 As shown, the size of the first abutment portion 1032 is smaller than the size of the end away from the moving contact 1021, so that when the subsequent quick-closing member 103 moves toward the side away from the limiting groove, the moving contact 1021 can quickly separate from the first abutment portion 1032 and release the abutment, thus improving the efficiency of the closing process.

[0058] Furthermore, such as Figure 7 As shown, the fixing plate 1031 is provided with a second abutment portion 1034 along the width direction b of the circuit breaker 200. The second abutment portion 1034 is perpendicular to the plate surface of the fixing plate 1031. The second abutment portion 1034 is used to abut against the mechanism seat 1022.

[0059] Specifically, such as Figure 7As shown, the second abutment portion 1034 and the first abutment portion 1032 have a preset distance to ensure that when the moving contact 1021 abuts with the first abutment portion 1032, the mechanism seat 1022 will not temporarily abut with the quick-closing member 103 and can continue to move in the closing direction; please refer to Figure 4 and Figure 5 When the mechanism seat 1022 moves a preset distance, it can contact the second abutment part 1034 to drive the fixed plate 1031 to move along the side away from the limiting groove until the moving contact 1021 can quickly separate from the first abutment part 1032 and release the abutment. At this time, the moving contact 1021 releases energy to quickly close with the stationary contact 202.

[0060] It should be noted that, in one preferred embodiment of this application, such as Figure 7 As shown, the second abutment portion 1034 has a cylindrical structure. This arrangement makes the process of the outer wall of the second abutment portion 1034 sliding relative to the quick-connect piece 103 more stable and faster.

[0061] For example, such as Figure 7 As shown, the quick-closing component 103 also includes a guide plate 1033, which is vertically disposed on the side edge of the fixed plate 1031 and has a preset distance from the first abutting part 1032. When the mechanism seat 1022 abuts against the quick-closing component 103, it can drive the guide plate 1033 to move along the width direction b of the circuit breaker 200 toward the side away from the limiting groove, thereby driving the fixed plate 1031 to move along the width direction b of the circuit breaker 200, so that the first abutting part 1032 and the moving contact 1021 are released from abutment.

[0062] Specifically, such as Figure 7 As shown, a guide plate 1033 is also provided on the side of the guide plate 1033 facing the limiting groove. The guide plate 1033 is located in the middle of the fixed plate 1031, slightly close to the first abutment part 1032, forming an approximately T-shaped structure, so as to have a preset distance from the first abutment part 1032. This arrangement ensures that when the fixed plate 1031 moves along the side away from the limiting groove, the moving contact 1021 and the fixed plate 1031 move relative to each other, so that the moving contact 1021 is located in the gap between the guide plate 1033 and the fixed plate 1031. Since the guide plate 1033 and the first abutment part 1032 have a preset distance, a gap can be formed to accommodate the moving contact 1021. At this time, the moving contact 1021 quickly separates from the first abutment part 1032 and releases the abutment, and can release energy to quickly close with the stationary contact 202.

[0063] Meanwhile, the guide plate 1033 can further improve the connection stability between the quick-connect component 103 and the limiting groove. When the quick-connect component 103 is fixed by the limiting groove, when the fixing plate 1031 is partially inserted into the limiting groove, the guide plate 1033 is fully inserted into the limiting groove. When the quick-connect component 103 moves toward the side away from the limiting groove, the guide plate 1033 moves along the inner wall of the limiting groove, making the movement of the quick-connect component 103 more stable and reliable.

[0064] During the movement of the quick-connect component 103, since the guide plate 1033 is located in the middle of the fixed plate 1031 and slightly closer to the first abutment part 1032, the side of the fixed plate 1031 closer to the guide plate 1033 can first separate from the limiting groove, so that the moving contact 1021 can quickly separate from the first abutment part 1032 and release the abutment; while the side of the fixed plate 1031 away from the guide plate 1033 can still be locked in the limiting groove to prevent the quick-connect component 103 from slipping out of the limiting groove.

[0065] In one possible implementation of this application, such as Figure 8 As shown, the mechanism base 1022 is provided with a guide portion 1022a corresponding to the second abutment portion 1034. The guide portion 1022a can contact the side wall of the second abutment portion 1034. The thickness of the guide portion 1022a gradually decreases along the closing direction of the moving contact 1021. When the handle 101 drives the mechanism base 1022 to rotate in the closing direction, the side wall of the second abutment portion 1034 can slide along the guide portion 1022a and drive the guide portion 1022a to move along the width direction b of the circuit breaker 200.

[0066] Specifically, such as Figure 8 As shown, the mechanism base 1022 is provided with a guide portion 1022a corresponding to the second abutment portion 1034. The thickness of the guide portion 1022a gradually decreases along the closing direction of the moving contact 1021, so that the side wall of the guide portion 1022a forms an inclined surface. When the second abutment portion 1034 contacts the mechanism base 1022, the side wall of the second abutment portion 1034 can slide along this inclined surface. The relative sliding between the second abutment portion 1034 and the mechanism base 1022 causes the second abutment portion 1034 to move along the width direction b of the circuit breaker 200 under the influence of the guide portion 1022a.

[0067] Optionally, such as Figure 7 As shown, the fixed plate 1031 is provided with an elastic part 1035 on the side opposite to the guide plate 1033. When the fixed plate 1031 moves along the width direction b of the circuit breaker 200, the elastic part 1035 can abut against the inner wall of the housing 201 to store energy. When the moving contact 1021 moves toward the opening direction to drive the mechanism seat 1022 to separate from the quick-closing member 103, the elastic part 1035 releases energy to drive the fixed plate 1031 to reset.

[0068] Specifically, such as Figure 7 As shown, the fixed plate 1031 is also provided with an elastic part 1035 on the side opposite to the guide plate 1033. The elastic part 1035 is used to provide a restoring force for the fixed plate 1031. When the fixed plate 1031 moves toward the side opposite to the limiting groove, the fixed plate 1031 simultaneously drives the elastic part 1035 to move toward the side opposite to the limiting groove so that the elastic part 1035 abuts against the inner wall of the housing 201. At this time, the elastic part 1035 stores energy; Figure 3 As shown, when the moving contact 1021 moves toward the opening direction to drive the mechanism seat 1022 to separate from the quick-closing member 103, the elastic part 1035 is no longer subjected to the pressure applied by the moving contact assembly 102 and releases energy to drive the fixed plate 1031 to reset.

[0069] Preferably, such as Figure 7 As shown, the elastic part 1035 is configured as a curved structure, such as a spiral or wave shape, as long as it can abut against the inner wall of the housing 201 to provide a restoring force for the quick-connect member 103. This application does not impose any restrictions on this.

[0070] In one possible implementation of this application, such as Figure 6 As shown, the fast closing device 100 also includes a pad 104, and a limiting groove is provided on the pad 104; a contact plate 1042 is also vertically provided on the surface of the pad 104, and the contact plate 1042 protrudes from the edge of the limiting groove to support the fixing plate 1031.

[0071] Specifically, in one possible embodiment of this application, the limiting groove can be directly disposed on the inner wall of the housing 201; of course, the snap-fit ​​groove 1045 can also be directly disposed on the inner wall of the housing 201. In another possible embodiment of this application, in order to adapt to the placement position of the moving contact 1021 group and other components, the limiting groove can also be disposed on the pad 104; of course, the snap-fit ​​groove 1045 can also be disposed on the pad 104. Figure 6 As shown, a boss 1041 is provided on the pad 104, and a limiting groove can be provided on the boss 1041 to ensure that the limiting groove has sufficient depth. In order to prevent the quick-closing member 103 from falling out of the limiting groove when it moves along the width direction b of the circuit breaker 200, a contact plate 1042 is also provided on the surface of the pad 104. The contact plate 1042 is vertically provided on the boss 1041 and located at the edge of the limiting groove to support the fixing plate 1031.

[0072] It should be noted that in the above embodiments, the boss 1041 is provided on the surface of the pad 104. In another embodiment, the boss 1041 can also be the arc-blocking plate of the circuit breaker 200. The arc-blocking plate supports and supports the side of the quick-connecting part 103 protruding from the limiting groove, thereby saving production costs.

[0073] In one specific embodiment of this application, such as Figure 6 As shown, the limiting groove includes a rotating groove 1043 and a fixed groove 1044 arranged side by side along the closing direction. The depth of the rotating groove 1043 is greater than the depth of the fixed groove 1044. The rotating groove 1043 is used to insert a guide plate 1033, and the fixed groove 1044 is used to insert a fixed plate 1031. The side of the fixed groove 1044 away from the rotating groove 1043 extends toward the side away from the pad 104 to limit and fix the end of the fixed plate 1031 away from the first abutment part 1032.

[0074] Specifically, such as Figure 6 As shown, the limiting groove includes a rotating groove 1043 and a fixed groove 1044. The rotating groove 1043 is used to insert the guide plate 1033, and the fixed groove 1044 is used to insert the fixed plate 1031, so that the movement process of the guide plate 1033 is separated from the fixed plate 1031, and the connection stability between the quick-connect part 103 and the limiting groove is also improved.

[0075] In order to prevent the quick-connect part 103 from falling out of the limiting groove when it moves toward the side away from the limiting groove, the fixing groove 1044 is arranged so that the side away from the rotating groove 1043 extends toward the side away from the pad 104, so that the fixing groove 1044 is an L-shaped groove, thereby further improving the connection stability between the fixing plate 1031 and the fixing groove 1044.

[0076] Another aspect of this application, such as Figure 1 As shown, a circuit breaker 200 is provided, including a housing 201, a stationary contact 202, and a fast closing device 100. The stationary contact 202 and the fast closing device 100 are installed inside the housing 201. The fast closing device 100 includes a fast closing member 103 and a mechanism base 1022. The fast closing member 103 is disposed between the mechanism base 1022 and the stationary contact 202. The moving contact 1021 of the fast closing device 100 is driven to rotate to close or open with the stationary contact 202.

[0077] Specifically, such as Figure 1As shown, the circuit breaker 200 also includes a fast closing device 100, a housing 201, and a stationary contact 202. The housing 201 provides protection and support for the fast closing device 100 and the stationary contact 202. The moving contact 1021 of the fast closing device 100 can be driven to rotate to quickly close with the stationary contact 202. Since the fast closing component 103 of the fast closing device 100 extends along the width direction b of the circuit breaker 200, it can save space in the length direction a of the circuit breaker 200. It can be installed in the width direction b of the circuit breaker 200 in the gap between the mechanism base 1022 and the stationary contact 202 and other components, making the layout of each component more compact and improving the space utilization of the circuit breaker 200. The specific structure and beneficial effects of the fast closing device 100 have been described in detail above and will not be repeated here. The circuit breaker 200 described above can achieve fast and accurate closing of the moving contact 1021 and the stationary contact 202, thereby improving the reliability of the circuit breaker 200.

[0078] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0079] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A fast closing device, characterized in that, The circuit breaker (200) includes a handle (101) rotatably mounted within a housing (201), a moving contact assembly (102), and a quick-closing member (103), the quick-closing member (103) being movably disposed within the housing (201) along the width direction (b) of the circuit breaker (200); the moving contact assembly (102) includes a moving contact (1021) and a mechanism seat (1022) coaxially disposed within the housing (201); The handle (101) drives the moving contact (1021) and the mechanism seat (1022) to rotate in the closing direction, so that the moving contact (1021) abuts against the quick-closing member (103) to store energy, and the handle (101) continues to drive the mechanism seat (1022) to rotate until the mechanism seat (1022) abuts against the quick-closing member (103) and drives the quick-closing member (103) to move along the width direction (b) of the circuit breaker (200), so that the quick-closing member (103) releases the abutment from the moving contact (1021), the moving contact (1021) releases energy and continues to rotate in the closing direction.

2. The fast closing device according to claim 1, characterized in that, The housing (201) is provided with a limiting groove along the closing direction of the moving contact (1021). The quick-closing member (103) includes a fixing plate (1031), which can be partially inserted into the limiting groove. The fixing plate (1031) has a first abutting part (1032) at one end facing the moving contact (1021). The first abutting part (1032) protrudes from the limiting groove and is used to abut against the moving contact (1021).

3. The fast closing device according to claim 1, characterized in that, The housing (201) has two oppositely arranged snap-fit ​​grooves (1045), which are arc-shaped grooves; the quick-connect component (103) includes a fixing plate (1031), and a rotating shaft (1031a) is provided through the fixing plate (1031) along the plate thickness direction at one end near the snap-fit ​​groove (1045). The opposite sides of the rotating shaft (1031a) are respectively snapped into the two snap-fit ​​grooves (1045). The fixing plate (1031) can move along the width direction (b) of the circuit breaker (200) with the rotating shaft (1031a) as the rotation center; the fixing plate (1031) has a first abutting part (1032) at one end facing the moving contact (1021), which is used to abut against the moving contact (1021).

4. The fast closing device according to claim 2 or 3, characterized in that, The quick-connecting component (103) further includes a guide plate (1033), which is vertically disposed on the side edge of the fixed plate (1031) and has a preset distance from the first abutting part (1032). When the mechanism seat (1022) abuts against the quick-connecting component (103), it can drive the guide plate (1033) to move along the width direction (b) of the circuit breaker (200), thereby driving the fixed plate (1031) to move along the width direction (b) of the circuit breaker (200), so that the first abutting part (1032) and the moving contact (1021) are released from abutment.

5. The fast closing device according to claim 2 or 3, characterized in that, The fixing plate (1031) is provided with a second abutment (1034) along the width direction (b) of the circuit breaker (200), and the second abutment (1034) is perpendicular to the plate surface of the fixing plate (1031); the second abutment (1034) is used to abut against the mechanism seat (1022).

6. The fast closing device according to claim 5, characterized in that, The mechanism base (1022) is provided with a guide portion (1022a) corresponding to the second abutment portion (1034). The guide portion (1022a) can contact the side wall of the second abutment portion (1034). The thickness of the guide portion (1022a) gradually decreases along the closing direction of the moving contact (1021). When the handle (101) drives the mechanism base (1022) to rotate in the closing direction, the side wall of the second abutment portion (1034) can slide along the guide portion (1022a) and drive the guide portion (1022a) to move along the width direction (b) of the circuit breaker (200).

7. The fast closing device according to claim 4, characterized in that, The fixed plate (1031) is provided with an elastic part (1035) on the side away from the guide plate (1033). When the fixed plate (1031) moves along the width direction (b) of the circuit breaker (200), the elastic part (1035) can abut against the inner wall of the housing (201) to store energy. When the moving contact (1021) moves toward the opening direction to drive the mechanism seat (1022) to separate from the quick-closing member (103), the elastic part (1035) releases energy to drive the fixed plate (1031) to reset.

8. The fast closing device according to claim 2, characterized in that, The fast closing device (100) also includes a pad (104), and the limiting groove is disposed on the pad (104); the surface of the pad (104) is also vertically provided with a contact plate (1042), and the contact plate (1042) protrudes from the edge of the limiting groove to support the fixing plate (1031).

9. The fast closing device according to claim 8, characterized in that, The limiting groove includes a rotating groove (1043) and a fixed groove (1044) arranged side by side along the closing direction. The depth of the rotating groove (1043) is greater than the depth of the fixed groove (1044). The rotating groove (1043) is used to insert a guide plate (1033), and the fixed groove (1044) is used to insert a fixed plate (1031). The side of the fixed groove (1044) away from the rotating groove (1043) extends toward the side away from the pad (104) to limit and fix the end of the fixed plate (1031) away from the first abutment (1032).

10. A circuit breaker, characterized in that, The device includes a housing (201), a stationary contact (202), and a fast closing device (100) as described in any one of claims 1-9. The stationary contact (202) and the fast closing device (100) are installed inside the housing (201). The fast closing device (100) includes a quick-closing component (103) and a mechanism seat (1022). The quick-closing component (103) is disposed between the mechanism seat (1022) and the stationary contact (202). The moving contact (1021) of the fast closing device (100) is driven to rotate to close or open with the stationary contact (202).

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