Alarm auxiliary contacts and circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electrical appliances, and discloses an alarm auxiliary contact and a circuit breaker device. The alarm auxiliary contact comprises a housing, a handle, a transmission assembly, a contact frame, a normally open contact, a normally closed contact, a conductive member and a debugging member; the handle, the transmission assembly and the contact frame are respectively rotatably matched with the housing, and the handle is connected to the operating handle of the circuit breaker; the transmission assembly is transmission-connected with the handle and matched with the tripping mechanism of the circuit breaker; the contact frame is transmission-connected with the transmission assembly; the debugging member is movably connected with the housing and partially exposed from the housing; when the handle is in the closing position and the opening position, the contact frame is maintained in the first position, so that the conductive member contacts the normally open contact; when the circuit breaker trips or an external force drives the debugging member to push the contact frame, the transmission assembly can be triggered to drive the contact frame to move from the first position to the second position, and the conductive member contacts the normally closed contact. The alarm auxiliary contact is convenient for directly operating the debugging member to trigger the transmission assembly to drive the contact frame to move during the installation and debugging process.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an alarm auxiliary contact and a circuit breaker. Background Art

[0002] The alarm auxiliary contact is an accessory used with a circuit breaker, which can help operators confirm whether the circuit breaker is tripped manually or due to a fault current.

[0003] The alarm auxiliary contact usually includes a handle, a transmission assembly, a contact frame, a normally open contact, a normally closed contact and a conductive member. Among them, the handle is used to connect with the operating handle of the circuit breaker, and moves with the closing and opening of the operating handle. The transmission assembly is connected to the handle in a transmission manner, and one end extends into the circuit breaker and cooperates with the circuit breaker's trip assembly in a transmission manner. The contact frame is connected to the transmission assembly in a transmission manner, and can drive the conductive member to move from a state of contact with the normally open contact to a state of contact with the normally closed contact. The normally open contact, the normally closed contact and the conductive member are all used to connect with an external alarm device. The general working principle of the alarm auxiliary contact is: when the circuit breaker is closed or opened normally, the contact frame remains in position under the action of the transmission assembly, so that the conductive member remains in contact with the normally open contact, the external alarm circuit is disconnected, and the alarm device does not alarm. When the circuit breaker trips due to abnormal current, the trip assembly of the circuit breaker drives the transmission assembly to operate. The transmission assembly moves the contact frame and drives the conductive member to move from the position in contact with the normally open contact to the position in contact with the normally closed contact. At this time, the external alarm circuit is connected and the alarm device alarms, so that the operator can confirm that the current circuit breaker trip is caused by abnormal current.

[0004] However, during the installation and debugging process, it is necessary to test the function of the alarm auxiliary contact and whether the alarm device works normally after the abnormal current appears. At this time, it is not convenient to provide abnormal current to the circuit breaker. The usual practice is to remove part of the alarm auxiliary contact or circuit breaker housing to expose part of the transmission component. The operator uses a tool to move the part of the transmission component that cooperates with the circuit breaker to simulate the action when the abnormal current occurs. This method requires disassembly of part of the alarm auxiliary contact or circuit breaker housing, which is inconvenient to operate. Utility Model Content

[0005] One purpose of the utility model is to provide an alarm auxiliary contact, which is convenient for directly operating a debugging piece to trigger a transmission component to drive a contact frame to move during installation and debugging, thereby improving the convenience of testing the alarm auxiliary contact and the alarm device connected thereto.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An alarm auxiliary contact comprises a housing, a handle, a transmission assembly, a contact frame, a normally open contact, a normally closed contact, a conductive member and a debugging member; wherein the handle, the transmission assembly and the contact frame are rotatably mounted on the housing, the handle is configured to be connected to an operating handle of a circuit breaker; the transmission assembly is transmission-connected to the handle and configured to cooperate with a tripping mechanism of the circuit breaker; the contact frame is transmission-connected to the transmission assembly and can drive the conductive member to move; the debugging member is movably connected to the housing and at least partially exposed from the housing;

[0008] When the handle is located at the closing position and the opening position, the contact frame can be kept at the first position, and the conductive member is in contact with the normally open contact, and the contact frame is in contact with the debugging member;

[0009] When the circuit breaker trips or an external force drives the debugging member to push the contact frame, the transmission assembly can be triggered to drive the contact frame to move from the first position to the second position, and the conductive member contacts the normally closed contact.

[0010] As an optional solution, an operating portion for user operation is provided on the debugging member, and the operating portion is covered when the handle is located in the closing position, and the operating portion is exposed when the handle is located in the opening position.

[0011] As an optional solution, the alarm auxiliary contact further includes a resetting elastic member, and the resetting elastic member is configured to reset the debugging member.

[0012] As an optional solution, a first limiting portion is convexly provided on a side of the handle facing the contact frame, a matching portion is convexly provided on a side of the contact frame facing the handle, and a second limiting portion is provided on the transmission assembly;

[0013] When the handle is located at the opening position and rotates from the opening position to the closing position, the first limiting portion limits the matching portion so that the contact frame remains in the first position;

[0014] When the handle is located at the closing position, the second limiting portion abuts against the contact frame to keep the contact frame at the first position.

[0015] As an optional solution, the extension track of the first limiting portion is an arc shape, and when the handle is located at the closing position, the first limiting portion is separated from the matching portion; and / or

[0016] The debugging member is provided with a matching bevel, and the matching bevel is used to abut against the matching portion. When the debugging member is driven, the matching bevel causes the matching portion to generate an axial displacement to separate from the first limiting portion.

[0017] As an optional solution, a guiding slope is provided on the matching portion, and the guiding slope is configured to guide the matching portion to match with the first limiting portion when the handle drives the contact frame to rotate from the second position to the first position.

[0018] As an optional solution, the transmission assembly includes:

[0019] A rocker arm, rotatably matched with the housing, wherein the second limiting portion is arranged on the rocker arm;

[0020] A jump button, which cooperates with the rocker arm in rotation;

[0021] A connecting rod, through which the handle is respectively connected to the jumper and the rocker arm in a transmission manner;

[0022] A lever, rotatably matched with the rocker arm, one end of the lever is configured to match with the lock assembly of the circuit breaker, and the other end can be engaged or disengaged with the trip button;

[0023] A first elastic member, one end of which is connected to the housing, and the other end of which is connected to the contact frame;

[0024] When the handle is at the closing position, the second limiting portion presses against the contact frame to keep the contact frame at the first position;

[0025] When the circuit breaker trips, the lever is disengaged from the tripping catch, and the first elastic member drives the contact bracket to rotate from the first position to the second position;

[0026] When an external force drives the debugging member to push the contact frame, the contact frame pushes the contact frame to rotate, so that the lever on the contact frame is disengaged from the trip button, and the first elastic member drives the contact frame to rotate from the first position to the second position.

[0027] As an optional solution, the transmission assembly also includes a second elastic member, which is respectively connected to the housing and the rocker arm, and the second elastic member is configured to drive the rocker arm away from the contact frame when the lever is disengaged from the trip latch.

[0028] As an optional solution, a warning member is provided on the outer side of the shell, a avoidance hole is provided on the shell, a shielding portion is provided on the contact frame, and the shielding portion extends out of the shell from the avoidance hole;

[0029] When the contact bracket is located at the first position, the shielding portion shields the warning member;

[0030] When the contact bracket is located at the second position, the shielding portion exposes the warning member.

[0031] Another object of the utility model is to provide a circuit breaker device, which makes the installation and debugging process more convenient by adopting the above-mentioned alarm auxiliary contact.

[0032] The circuit breaker device comprises a circuit breaker and the alarm auxiliary contact, the handle is connected to the operating handle of the circuit breaker, and the transmission assembly cooperates with the tripping mechanism of the circuit breaker.

[0033] The beneficial effects of the utility model are:

[0034] The alarm auxiliary contact of the utility model, in the closing position and the opening position, the conductive part keeps in contact with the normally open contact, so the external alarm device does not alarm; after the circuit breaker trips, the transmission component is triggered to drive the contact frame to move from the first position to the second position, so that the contact frame drives the conductive part to contact with the normally closed contact, at which time the alarm circuit is turned on and the alarm device alarms. The above arrangement can help the operator to confirm whether the circuit breaker disconnection is caused by manual opening or circuit breaker tripping. By additionally setting up a debugging part, without disassembling the alarm auxiliary contact housing or the circuit breaker housing, the debugging part can be operated to trigger the transmission component to drive the contact frame to move from the first position to the second position, so that the conductive part contacts with the normally closed contact, the alarm circuit is turned on, and the alarm device alarms, so that the function of the alarm auxiliary contact and whether the alarm device is normal can be easily tested.

[0035] The circuit breaker device of the utility model adopts the above-mentioned alarm auxiliary contact, so the installation and debugging process is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a circuit breaker device provided in a specific embodiment of the utility model;

[0037] Figure 2 It is a structural schematic diagram of a circuit breaker provided by a specific implementation method of the utility model;

[0038] Figure 3 It is a structural schematic diagram of the alarm auxiliary contact in the open state provided by the specific implementation mode of the utility model;

[0039] Figure 4 It is a schematic diagram of the internal structure of the alarm auxiliary contact provided by the specific implementation mode of the utility model when the circuit breaker is normally closed;

[0040] Figure 5 It is a schematic diagram of the internal structure of the alarm auxiliary contact provided by the specific implementation mode of the utility model when the circuit breaker is normally opened;

[0041] Figure 6 It is a schematic diagram of the internal structure of the alarm auxiliary contact provided by the specific implementation mode of the utility model after the circuit breaker is tripped or the debugging part is manually operated;

[0042] Figure 7 It is a schematic diagram of the exploded structure of the alarm auxiliary contact provided by the specific implementation mode of the utility model when the circuit breaker is normally opened;

[0043] Figure 8 It is a structural schematic diagram of a handle provided in a specific embodiment of the utility model;

[0044] Fig. 9 It is a structural schematic diagram of a contact frame provided in a specific embodiment of the utility model;

[0045] Fig.10 It is a structural schematic diagram of a debugging component provided in a specific embodiment of the utility model;

[0046] Fig.11 It is a schematic diagram of the internal structure of the alarm auxiliary contact provided by the specific implementation mode of the utility model after the circuit breaker is tripped or the debugging part is manually operated under another viewing angle.

[0047] In the figure:

[0048] 100, alarm auxiliary contact; 10, housing; 11, bottom shell; 12, housing cover; 13, avoidance hole; 20, handle; 21, main body; 22, connecting part; 23, first limit part; 30, transmission assembly; 31, rocker arm; 311, second limit part; 32, jump button; 33, connecting rod; 34, lever; 35, first elastic member; 36, second elastic member; 40, contact frame; 41, matching part; 411, guiding slope; 42, shielding part; 50, normally open contact; 60, normally closed contact; 70, debugging part; 71, operating part; 72, matching slope; 80, warning member; 90, conductive member;

[0049] 200, circuit breaker; 210, operating handle; 220, housing; 230, through hole. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] like Figure 1 As shown, this embodiment provides an alarm auxiliary contact 100 and a circuit breaker. The circuit breaker includes a circuit breaker 200 and an alarm auxiliary contact 100. The alarm auxiliary contact 100 is used in conjunction with the circuit breaker 200. The alarm auxiliary contact 100 is transmission-connected to the circuit breaker 200 and electrically connected to an external alarm circuit. When the circuit breaker 200 trips due to an abnormal current, the alarm circuit is turned on and the alarm device in the alarm circuit alarms; when the circuit breaker 200 is closed and opened normally, the alarm circuit is disconnected and the alarm device does not alarm; this makes it easy for the operator to confirm whether the circuit breaker 200 is disconnected manually or tripped due to an abnormal current.

[0055] like Figure 2As shown, the circuit breaker 200 includes a housing 220 and an operating handle 210 at least partially located outside the housing 220. The operating handle 210 is used for the operator to close and open the circuit breaker 200. A tripping mechanism is also provided in the housing 220 of the circuit breaker 200. The tripping mechanism is used to trip when an abnormal current appears in the circuit, so that the circuit breaker 200 disconnects the circuit. When the circuit breaker 200 disconnects the circuit due to the abnormal current and the operator manually disconnects the circuit, the position of the operating handle 210 coincides. Figure 2 As shown, a through hole 230 is provided on the housing 220, and the through hole 230 is arranged opposite to the tripping mechanism and is used for the transmission assembly 30 (described below) of the alarm auxiliary contact 100 to pass through so as to cooperate with the tripping mechanism. Optionally, the circuit breaker 200 can be a residual current operated circuit breaker. It can be understood that the circuit breaker 200 can be any one of the prior art without violating the inventive concept of the present application.

[0056] like Figure 3-Figure 6 As shown, the alarm auxiliary contact 100 includes a housing 10, a handle 20, a transmission assembly 30, a contact frame 40, a normally open contact 50, a normally closed contact 60 and a conductive member 90. The housing 10 includes a bottom shell 11 and a housing cover 12, and the bottom shell 11 and the housing cover 12 are buckled together to enclose a space for accommodating the above components and support the above components. The normally open contact 50, the normally closed contact 60 and the conductive member 90 are all installed in the housing 10 and are respectively connected to the external alarm circuit. At least part of the conductive member 90 can move relative to the housing 10 to select to contact with the normally open contact 50 or the normally closed contact 60. When the conductive member 90 contacts the normally open contact 50, the alarm circuit is disconnected and the alarm device does not alarm. When the conductive member 90 contacts the normally closed contact 60, the alarm circuit is turned on and the alarm device alarms. The handle 20, the transmission assembly 30 and the contact frame 40 are rotatably mounted on the housing 10. The handle 20 is connected to the operating handle 210 of the circuit breaker 200 and moves synchronously with the operating handle 210, so that the handle 20 also has a closing position and an opening position. The transmission assembly 30 is connected to the handle 20 in a transmission manner and is configured to cooperate with the tripping mechanism of the circuit breaker 200. The contact bracket 40 is connected to the transmission assembly 30 in a transmission manner and can drive the conductive member 90 to move. Figure 4 and Figure 5 As shown, when the handle 20 is in the closing position and the opening position, the contact bracket 40 can be kept in the first position and the conductive member 90 is in contact with the normally open contact 50, thereby ensuring that the external alarm device does not alarm. Figure 6 As shown, when the circuit breaker 200 trips, the tripping mechanism of the circuit breaker 200 triggers the transmission assembly 30 to operate, so that the transmission assembly 30 drives the contact bracket 40 to move from the first position to the second position. In the second position, the contact bracket 40 makes the conductive member 90 contact with the normally closed contact 60, so that the alarm device can alarm.

[0057] In this embodiment, Figure 4 and Figure 5 As shown in FIG. 1 , the handle 20 can be rotated clockwise from the open position to the closed position. The contact bracket 40 can be rotated counterclockwise from the first position to the second position. It can be understood that Figure 6 As shown, after the circuit breaker 200 trips, the handle 20 of the alarm auxiliary contact 100 also moves to the opening position. Figure 2 and Figure 3 As shown, the housing 10 of the alarm auxiliary contact 100 and the housing 220 of the circuit breaker 200 can be fixed by snapping, and the transmission assembly 30 is partially inserted into the housing 220 of the circuit breaker 200 through the through hole 230 after being arranged outside the housing 10, so as to cooperate with the tripping mechanism of the circuit breaker 200. The handle 20 of the alarm auxiliary contact 100 is partially located outside the housing 10, and is connected to the operating handle 210 of the circuit breaker 200 by plugging.

[0058] like Figure 7 As shown, the transmission assembly 30 includes a rocker arm 31, a trip button 32, a connecting rod 33, a lever 34 and a first elastic member 35. The rocker arm 31 is rotationally matched with the housing 10, the trip button 32 is rotationally matched with the rocker arm 31, and the handle 20 is respectively connected to the trip button 32 and the rocker arm 31 through the connecting rod 33; the lever 34 is rotationally matched with the rocker arm 31, one end of the lever 34 can be engaged or disengaged with the trip button 32, and the other end of the lever 34 extends into the housing 220 of the circuit breaker 200 and cooperates with the lock assembly of the circuit breaker 200. One end of the first elastic member 35 is connected to the housing 10, and the other end is connected to the contact frame 40. In this embodiment, the conductive member 90 is a metal spring sheet, and a through hole is provided on the contact frame 40. The conductive member 90 penetrates the through hole. When the contact frame 40 moves from the first position to the second position, the conductive member 90 can be driven to move from the position in contact with the normally open contact 50 to the position in contact with the normally closed contact 60.

[0059] like Figure 3 and Figure 4 As shown in FIG. 1 , when the operator rotates the handle 20 clockwise to rotate it from the opening position to the closing position, the handle 20 drives the trip button 32 and the rocker arm 31 to rotate clockwise. At this time, the trip button 32 and the lever 34 are in a buckled state, and part of the rocker arm 31 presses the contact bracket 40 toward the side of the rocker arm 31, so that the contact bracket 40 is kept as shown in FIG. Figure 4 In the first position shown, the conductive member 90 contacts the normally open contact 50, and the alarm device does not alarm. In this embodiment, a second limit portion 311 is protruded on one side of the rocker arm 31 facing the contact frame 40, and the second limit portion 311 is used to press the contact frame 40 so that the contact frame 40 remains in the first position when the switch is closed.

[0060] like Figure 5As shown in FIG. 1 , when the operator rotates the handle 20 counterclockwise from the closing position to the opening position, the handle 20 drives the rocker arm 31 to rotate counterclockwise, and the rocker arm 31 no longer presses the contact frame 40. In order to ensure that the contact frame 40 can still be maintained in the first position during the manual opening process, as shown in FIG. Figure 4 , Figure 7-Figure 9 As shown, the handle 20 is provided with a first limiting portion 23 on one side facing the contact frame 40, and the contact frame 40 is provided with a matching portion 41 on one side facing the handle 20. When the handle 20 is in the opening position, during the process of rotating from the opening position to the closing position, and during the process of rotating from the closing position to the opening position, the first limiting portion 23 limits the matching portion 41 to keep the contact frame 40 in the first position. Figure 8 As shown, the first limiting portion 23 is arranged on the side of the main body 21 facing the contact frame 40, so a sliding groove structure is formed between the first limiting portion 23 and the main body 21, and the matching portion 41 can overlap in the sliding groove, thereby limiting the contact frame 40 from rotating counterclockwise, that is, maintaining it in the first position.

[0061] like Figure 5 As shown, the extension trajectory of the first limiting portion 23 is an arc shape. When the handle 20 is in the closing position, the first limiting portion 23 is separated from the matching portion 41, that is, when the handle 20 is in the closing position, only the rocker arm 31 limits the contact frame 40, and the handle 20 no longer limits the contact frame 40, so that when the circuit breaker 200 trips and causes the lever 34 to drive the rocker arm 31 to rotate counterclockwise, the contact frame 40 can smoothly move from the first position to the second position, so that the conductive member 90 contacts the normally closed contact 60.

[0062] like Figure 6 As shown, when the circuit breaker 200 trips, the lock structure of the circuit breaker 200 drives the lever 34 to rotate counterclockwise and disengages from the tripping latch 32, the handle 20 rotates from the closing position to the opening position, the rocker arm 31 can no longer support the contact frame 40, and the first elastic member 35 drives the contact frame 40 to rotate from the first position to the second position, so that the conductive member 90 contacts the normally closed contact 60. Figure 6 As shown, the transmission assembly 30 further includes a second elastic member 36, which is connected to the housing 10 and the rocker arm 31 respectively. When the lever 34 is disengaged from the tripping hook 32, the second elastic member 36 drives the rocker arm 31 away from the contact frame 40, ensuring that the rocker arm 31 no longer limits the contact frame 40, and ensuring that the contact frame 40 moves from the first position to the second position. In this embodiment, the first elastic member 35 is a tension spring, and the second elastic member 36 is a torsion spring.

[0063] During the installation and commissioning of the circuit breaker, it is necessary to test the function of the alarm auxiliary contact 100 and whether the alarm device can work normally after the abnormal current occurs. At this time, it is not convenient to provide abnormal current to the circuit breaker 200. The usual practice is to disassemble the alarm auxiliary contact 100 or part of the housing 10 of the circuit breaker 200 to expose part of the transmission assembly 30. The operator uses a tool to move the part of the transmission assembly 30 that cooperates with the circuit breaker 200 to simulate the action when the abnormal current occurs. This method requires disassembly of part of the housing 10 of the alarm auxiliary contact 100 or the circuit breaker 200, which is inconvenient to operate.

[0064] In this regard, Figure 3 As shown, the alarm auxiliary contact 100 further includes a debugging member 70, which is movably connected to the housing 10 and at least partially exposed from the housing 10. Figure 4 and Figure 5 As shown in FIG. 1 , when the handle 20 is in the closing position and the opening position, the contact bracket 40 contacts the debugging member 70. Figure 6 As shown, when the external force drives the debugging member 70 to rotate relative to the housing 10, the debugging member 70 pushes the contact frame 40 to move, thereby triggering the transmission assembly 30 to drive the contact frame 40 to move from the first position to the second position, and making the conductive member 90 contact the normally closed contact 60. Therefore, without disassembling the housing 10 of the alarm auxiliary contact 100 or the housing 220 of the circuit breaker 200, the debugging member 70 at least partially exposed outside the housing 10 can be operated to trigger the transmission assembly 30 to drive the contact frame 40 to move from the first position to the second position (i.e., the action of the transmission assembly 30 when simulating abnormal current), thereby conveniently realizing the function of the alarm auxiliary contact 100 and whether the alarm device is normal, thereby greatly improving the installation and debugging efficiency of the circuit breaker device. Specifically, in this embodiment, when the external force drives the debugging member 70 to push the contact frame 40 to rotate counterclockwise, the contact frame 40 pushes the rocker arm 31 and the lever 34 to rotate counterclockwise synchronously, thereby causing the lever 34 to be released from the trip button 32, and the first elastic member 35 drives the contact frame 40 to rotate from the first position to the second position.

[0065] like Figure 4 and Figure 7 As shown, the handle 20 includes a main body 21 and a connecting portion 22, the main body 21 is located in the housing 10 and is rotatably matched with the pivot on the housing 10, and the connecting portion 22 extends out of the housing 10 and extends along the axial direction of its pivot to be connected with the operating handle 210 of the circuit breaker 200. The adjustment member 70 is pivotally connected to the housing 10. In this embodiment, the adjustment member 70 is rotatably matched with the above-mentioned pivot, that is, by setting the handle 20 and the adjustment member 70 to share a common pivot, the structure of the housing 10 can be simplified and the production cost can be reduced.

[0066] In this embodiment, the alarm auxiliary contact 100 also includes a reset elastic member (not shown in the figure). After the user drives the operating member to rotate counterclockwise and triggers the transmission assembly 30 to drive the contact frame 40 to move from the first position to the second position, the reset elastic member is configured to reset the debugging member 70 clockwise, thereby facilitating the subsequent resetting of the contact frame 40 (i.e., rotating from the second position back to the first position) and facilitating the next operation of the debugging member 70.

[0067] like Figure 3 As shown, the debugging member 70 is provided with an operating portion 71, which is exposed outside the housing 10 for easy operation by the user. In this embodiment, the operating portion 71 includes a groove provided on the debugging member 70, and the operator can drive the debugging member 70 to rotate by moving the groove with the hand or with the help of a tool, which is convenient to operate, and the groove will not interfere with the movement of the handle 20. In other embodiments, the operating portion 71 can also be a convex structure, a partially rough structure, etc., which is not specifically limited here.

[0068] like Figure 3 As shown, when the handle 20 is in the off position, the operating portion 71 is exposed, so that the user can operate the debugging member 70. Figure 5 As shown, the handle 20 blocks the operating portion 71 when it is in the closing position. Specifically, the connecting portion 22 of the handle 20 is located above the operating portion 71, thereby blocking the operating portion 71. This arrangement can prevent the operator from operating the debugging component 70 when the circuit breaker 200 is in the closed state, thereby avoiding safety hazards caused by misoperation.

[0069] like Figure 5 and Fig.10 As shown, the debugging member 70 is provided with a matching bevel 72. When the handle 20 is in the off position, the matching bevel 72 abuts against the matching portion 41, thereby ensuring that the contact frame 40 can be kept in the first position in the off state. When the operator drives the debugging member 70 to rotate counterclockwise, the matching bevel 72 causes the matching portion 41 to be displaced axially away from the handle 20, thereby separating the matching portion 41 from the first limiting portion 23, and then the contact frame 40 can move counterclockwise from the first position to the second position under the action of the first elastic member 35. It should be noted that after the matching portion 41 is separated from the first limiting portion 23, the first elastic member 35 will also reset the entire contact frame 40 in the axial direction.

[0070] like Figure 6 and Fig. 9 As shown, a guiding bevel 411 is provided on the mating portion 41, and the guiding bevel 411 is configured to guide the mating portion 41 to smoothly cooperate with the first limiting portion 23 when the handle 20 drives the contact bracket 40 to rotate from the second position to the first position (i.e., after the circuit breaker 200 is tripped or after the operator operates the debugging member 70 to rotate counterclockwise, when the operator recloses the circuit breaker), so as to avoid the problem of the two being stuck.

[0071] After the circuit breaker 200 is tripped, the alarm circuit is turned on, but the alarm device may be damaged and unable to issue an alarm prompt. In order to avoid the above situation, Figure 3 , Figure 4 and Fig.11 As shown, a warning member 80 is arranged on the outer side of the housing 10, a avoidance hole 13 is arranged on the housing 10, and a shielding part 42 is arranged on the contact frame 40. The shielding part 42 extends out of the housing 10 from the avoidance hole 13. When the contact frame 40 is in the first position (i.e., when the handle 20 is in the closing position and the opening position), the shielding part 42 shields the warning member 80; when the contact frame 40 is in the second position (i.e., the circuit breaker 200 trips), the shielding part 42 exposes the warning member 80. In this way, the warning member 80 directly marks the position of the contact frame 40 and also marks the disconnection reason of the circuit breaker. When the operator sees that the warning member 80 is exposed, it means that the current conductive member 90 is in contact with the normally closed contact 60. Even if the alarm device is damaged and no alarm is issued, the operator can judge that the current disconnection of the circuit breaker 200 is caused by tripping. That is to say, the alarm auxiliary contact 100 of this embodiment can simultaneously provide a warning of the tripping of the circuit breaker 200 through the alarm device alarm prompt and the mechanical alarm prompt, and has high reliability. In this embodiment, the warning member 80 is a warning sign, which is attached to the housing 10. Optionally, the warning sign can be set to a bright color, such as red. In other embodiments, the warning member 80 can also be a text mark, a light mark, etc., which is not specifically limited here.

[0072] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. Alarm auxiliary contact, characterized in that: The invention comprises a housing (10), a handle (20), a transmission assembly (30), a contact frame (40), a normally open contact (50), a normally closed contact (60), a conductive member (90) and a debugging member (70); wherein the handle (20), the transmission assembly (30) and the contact frame (40) are rotatably mounted on the housing (10), the handle (20) is configured to be connected to an operating handle of a circuit breaker (200); the transmission assembly (30) is transmission-connected to the handle (20) and configured to cooperate with a tripping mechanism of the circuit breaker (200); the contact frame (40) is transmission-connected to the transmission assembly (30) and is capable of driving the conductive member (90) to move; the debugging member (70) is movably connected to the housing (10) and is at least partially exposed from the housing (10); When the handle (20) is located at the closing position and the opening position, the contact frame (40) can be maintained at the first position, and the conductive member (90) is in contact with the normally open contact (50), and the contact frame (40) is in contact with the adjustment member (70); When the circuit breaker (200) trips or an external force drives the debugging member (70) to push the contact frame (40), the transmission assembly (30) can be triggered to drive the contact frame (40) to move from the first position to the second position, and the conductive member (90) is brought into contact with the normally closed contact (60).

2. The alarm auxiliary contact according to claim 1, characterized in that: The debugging member (70) is provided with an operating portion (71) for user operation; the operating portion (71) is shielded when the handle (20) is located at the closing position, and the operating portion (71) is exposed when the handle (20) is located at the opening position.

3. The alarm auxiliary contact according to claim 1, characterized in that: The alarm auxiliary contact also includes a resetting elastic member, and the resetting elastic member is configured to reset the debugging member (70).

4. The alarm auxiliary contact according to claim 1, characterized in that: A first limiting portion (23) is convexly provided on one side of the handle (20) facing the contact frame (40), a matching portion (41) is convexly provided on one side of the contact frame (40) facing the handle (20), and a second limiting portion (311) is provided on the transmission assembly (30); When the handle (20) is located at the opening position and rotates from the opening position to the closing position, the first limiting portion (23) limits the matching portion (41) so that the contact bracket (40) remains at the first position; When the handle (20) is located at the closing position, the second limiting portion (311) abuts against the contact frame (40) so that the contact frame (40) remains at the first position.

5. The alarm auxiliary contact according to claim 4, characterized in that: The adjustment member (70) is provided with a matching bevel (72), the matching bevel (72) being used to abut against the matching portion (41), and when the adjustment member (70) is driven, the matching bevel (72) causes the matching portion (41) to generate an axial displacement to separate from the first limiting portion (23); and / or The extension track of the first limiting portion (23) is arc-shaped, and when the handle (20) is located at the closing position, the first limiting portion (23) is separated from the matching portion (41).

6. The alarm auxiliary contact according to claim 5, characterized in that: A guiding slope (411) is provided on the matching portion (41), and the guiding slope (411) is configured to guide the matching portion (41) to match with the first limiting portion (23) when the handle (20) drives the contact frame (40) to rotate from the second position to the first position.

7. The alarm auxiliary contact according to claim 5, characterized in that: The transmission assembly (30) comprises: A rocker arm (31) is rotatably matched with the housing (10), and the second limiting portion (311) is arranged on the rocker arm (31); A jump button (32) is rotationally matched with the rocker arm (31); A connecting rod (33), wherein the handle (20) is respectively connected to the jump button (32) and the rocker arm (31) in a transmission manner via the connecting rod (33); A lever (34) is rotatably matched with the rocker arm (31), one end of the lever (34) being configured to match with a lock assembly of the circuit breaker (200), and the other end of the lever (34) being capable of being engaged with or disengaged from the trip latch (32); A first elastic member (35), one end of which is connected to the housing (10) and the other end of which is connected to the contact frame (40); When the handle (20) is located at the closing position, the second limiting portion (311) presses against the contact frame (40) to keep the contact frame (40) at the first position; When the circuit breaker (200) trips, the lever (34) is disconnected from the trip button (32), and the first elastic member (35) drives the contact bracket (40) to rotate from the first position to the second position; When an external force drives the debugging member (70) to push the contact frame (40), the contact frame (40) pushes the contact frame (40) to rotate, so that the lever (34) on the contact frame (40) is disengaged from the trip buckle (32), and the first elastic member (35) drives the contact frame (40) to rotate from the first position to the second position.

8. The alarm auxiliary contact according to claim 7, characterized in that: The transmission assembly (30) further comprises a second elastic member (36), wherein the second elastic member (36) is respectively connected to the housing (10) and the rocker arm (31), and the second elastic member (36) is configured to drive the rocker arm (31) away from the contact frame (40) when the lever (34) is disengaged from the trip latch (32).

9. The alarm auxiliary contact according to any one of claims 1 to 8, characterized in that: A warning member (80) is arranged on the outer side of the shell (10), a avoidance hole (13) is arranged on the shell (10), a shielding portion (42) is arranged on the contact frame (40), and the shielding portion (42) extends out of the shell (10) from the avoidance hole (13); When the contact frame (40) is located at the first position, the shielding portion (42) shields the warning member (80); When the contact frame (40) is located at the second position, the shielding portion (42) exposes the warning member (80).

10. A circuit breaker device, characterized in that: It comprises a circuit breaker (200) and the alarm auxiliary contact according to any one of claims 1 to 9, wherein the handle (20) is connected to the operating handle of the circuit breaker (200), and the transmission assembly (30) cooperates with the tripping mechanism of the circuit breaker (200).

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