A circuit breaker accessory with a mechanical lock and a circuit breaker

Abstract

The present invention provides a circuit breaker accessory with a mechanical lock and a circuit breaker, which relates to the technical field of low-voltage electrical appliances. The circuit breaker accessory with a mechanical lock includes a housing, in which an accessory handle, a mechanical lock, an upper bracket, a lower bracket, a left contact, a right contact, a left lower wiring row, a left middle wiring row, a right middle wiring row, and a right lower wiring row are arranged. The accessory handle is rotatably arranged on the housing, the upper bracket and the lower bracket are coaxially rotatably arranged on the housing, a linkage mechanism is arranged on the lower bracket, the linkage mechanism includes a first lock catch and a first trip catch, and the mechanical lock is slidably arranged on the housing; the circuit breaker includes the circuit breaker accessory with a mechanical lock; through the mutual cooperation of the linkage mechanism, the lower bracket and the upper bracket, the user can, according to actual needs, bring the contacts into contact with the corresponding wiring rows to realize the auxiliary and alarm functions, and through the mechanical lock to cut off the transmission effect of the linkage mechanism, the phenomenon of accidental closing is avoided, and the locking function of the mechanical lock is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and particularly relates to a circuit breaker accessory with a mechanical lock and a circuit breaker. Background Art

[0002] Electrical accessories are the most common electrical devices in the auxiliary unit of a circuit breaker. Generally divided into auxiliary electrical accessories and alarm electrical accessories, the auxiliary electrical accessories control and indicate the three states of the circuit breaker, namely opening, closing, and tripping, through the on / off switching of the contacts, and the alarm electrical accessories emit an alarm signal during a fault trip.

[0003] With the development of technology and the improvement of industry requirements, it is now required to have a clear status feedback on the real-time status of low-voltage circuit breaker switches. It is required not only to be able to feedback the opening and closing status of the circuit breaker handle, but also to be able to feedback the status of the circuit breaker fault trip, which can improve the efficiency of troubleshooting and the safety of power consumption.

[0004] In order to further improve the safety of the line, especially during the line maintenance process, to prevent the accidental closing of the circuit breaker by humans when it is disconnected, causing a safety accident, it is also necessary to add a mechanical lock accessory to the circuit breaker to prevent the circuit breaker from closing.

[0005] The functions of existing circuit breaker accessories are often relatively single. Therefore, if it is necessary to simultaneously have the auxiliary, alarm, and mechanical locking functions of the circuit breaker, it is necessary to install multiple circuit breaker accessories with different functions to achieve this, which not only increases the on-site installation difficulty, but also increases the use cost and management cost. Summary of the Invention

[0006] The purpose of the present invention is to provide a circuit breaker accessory with a mechanical lock and a circuit breaker to solve the technical problems existing in the prior art, such as the single function of existing circuit breaker accessories, and the need to install multiple circuit breaker accessories with different functions on the circuit breaker to achieve auxiliary, alarm, and mechanical lock functions, resulting in inconvenient installation and high costs; the many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a circuit breaker accessory with a mechanical lock, comprising a shell, wherein an accessory handle, a mechanical lock, an upper bracket, a lower bracket, a left contact, a right contact, a left lower terminal block, a left middle terminal block, a right middle terminal block and a right lower terminal block are arranged in the shell, wherein: the accessory handle is rotatably arranged on the shell, the upper bracket and the lower bracket are coaxially rotatably arranged on the shell, the upper bracket is located on the upper side of the lower bracket, and a linkage mechanism is arranged on the lower bracket, the linkage mechanism comprises a first lock buckle and a first jump buckle; the first lock buckle is transmission-connected to the accessory handle, and the first lock buckle can be locked with the first jump buckle, so that the accessory handle drives the left contact to contact the left lower terminal block or the left middle terminal block through the linkage mechanism, the lower bracket and the upper bracket, and drives the right contact to contact the right middle terminal block or the right lower terminal block; the mechanical lock is slidably arranged on the shell, and the mechanical lock is slid to a predetermined position, and the first lock buckle can be separated from the first jump buckle.

[0009] Preferably, the lower bracket is provided with a first mounting portion and a second mounting portion, wherein: the first locking buckle can be rotatably set on the first mounting portion; the first jumping buckle can be rotatably set on the second mounting portion; the first locking buckle is provided with a locking portion, the first jumping buckle is provided with a locking portion, and the locking portion can be locked with the locking portion.

[0010] Preferably, an installation groove is provided on the shell and connected with its inner cavity, and the two ends of the mechanical lock are respectively arranged as a push-pull end and a limit end, and the limit end is slidably inserted into the shell along the installation groove; the first jump buckle is provided with an elastomer, and the mechanical lock is provided with an abutment part. The mechanical lock is slid to a predetermined position, and the abutment part can abut against the elastomer so that the locking part can be separated from the locking part.

[0011] Preferably, a first positioning portion and a second positioning portion are provided in the shell, and the mechanical lock is provided with a lock limiting portion, wherein: when the mechanical lock is in a pressed position, the lock limiting portion abuts against the lower side of the first positioning portion, and the limiting end abuts against the second positioning portion; when the mechanical lock is in a pulled-up position, the lock limiting portion abuts against the upper side of the first positioning portion, and the abutting portion abuts against the elastic body.

[0012] Preferably, the mechanical lock is provided with an elastic buffer groove near the push-pull end.

[0013] Preferably, a locking hole is provided through the push-pull end, and a position-limiting locking member can pass through the locking hole and abut against the outer wall of the shell to lock the mechanical lock to the pulled-up position.

[0014] Preferably, the linkage mechanism further comprises a first connecting rod, a first fixing portion is provided on the accessory handle, a second fixing portion is provided on the first locking buckle, and two ends of the first connecting rod are rotatably provided on the first fixing portion and the second fixing portion respectively.

[0015] Preferably, a guide overlapping portion is provided on the accessory handle, and a bracket limiting portion is provided on the upper bracket, and the bracket limiting portion can be overlapped to the guide overlapping portion.

[0016] Preferably, the accessory handle is provided with a first positioning connection portion for connecting to a circuit breaker handle of the circuit breaker; and the first trip buckle is provided with a second positioning connection portion for connecting to a linkage member of the circuit breaker mechanism.

[0017] The present invention provides a circuit breaker, comprising a circuit breaker mechanism and any one of the above-mentioned circuit breaker accessories with a mechanical lock.

[0018] The circuit breaker accessory with a mechanical lock and the circuit breaker provided by the present invention have at least the following beneficial effects:

[0019] The circuit breaker accessory with a mechanical lock comprises a shell, in which an accessory handle, a mechanical lock, an upper bracket, a lower bracket, a left contact, a right contact, a left lower terminal block, a left middle terminal block, a right middle terminal block and a right lower terminal block are arranged, the upper bracket and the lower bracket are used for supporting and linking the left contact, the right contact and other components, and the contacts and the terminal blocks cooperate with each other for line conduction.

[0020] The accessory handle is rotatably arranged on the shell, and the upper bracket and the lower bracket are coaxially rotatably arranged on the shell, the upper bracket is located on the upper side of the lower bracket, and a linkage mechanism is arranged on the lower bracket, and the linkage mechanism includes a first lock buckle and a first jump buckle, and the first lock buckle is transmission-connected with the accessory handle. When in use, the first lock buckle and the first jump buckle are locked. At this time, by rotating the accessory handle, the left contact can be driven to contact the corresponding lower left terminal block or the left middle terminal block through the linkage mechanism, the lower bracket and the upper bracket, and the right contact can be driven to contact the corresponding lower right terminal block or the right middle terminal block, so as to realize auxiliary and alarm functions.

[0021] The mechanical lock is slidably arranged on the housing. When the mechanical lock is working, the mechanical lock is slid to a predetermined position. During the operation of the circuit breaker accessory, the first lock buckle and the first trip buckle can be separated, thereby cutting off the transmission effect of the linkage mechanism. At this time, even if the accessory handle continues to be rotated, power cannot be transmitted to the left contact and the right contact, and closing cannot be achieved.

[0022] Through the mutual cooperation of the linkage mechanism, the lower bracket and the upper bracket, the user can contact the contact with the corresponding wiring row according to actual needs, so as to realize the auxiliary and alarm functions. By means of a mechanical lock to cut off the transmission effect of the linkage mechanism, closing due to accident can be avoided. The mechanical lock function is safe and reliable. The circuit breaker accessory of the present invention has various functions. Without installing too many different types of circuit breaker accessories, the auxiliary, alarm and mechanical lock functions can be realized. It is not only convenient for installation and operation, but also effectively reduces the types of circuit breaker accessories, reduces the occupancy of the warehouse, and saves the use cost and management cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of the circuit breaker accessory with a mechanical lock in the pressed position;

[0025] Figure 2 is a schematic structural diagram of the circuit breaker accessory with a mechanical lock in the pulled-up position;

[0026] Figure 3 is a schematic structural diagram of the housing of the present invention;

[0027] Figure 4 is a schematic structural diagram of the accessory handle of the present invention;

[0028] Figure 5 is a schematic structural diagram of the mechanical lock of the present invention;

[0029] Figure 6 is a schematic structural diagram of the upper bracket of the present invention;

[0030] Figure 7 is a schematic structural diagram of the lower bracket of the present invention;

[0031] Figure 8 is a schematic structural diagram of the first lock catch of the present invention;

[0032] Figure 9 is a schematic structural diagram of the first toggle of the present invention;

[0033] Figure 10 is a schematic structural diagram of the circuit breaker mechanism installed in the housing of the present invention;

[0034] Figure 11 is a schematic structural diagram of the circuit breaker mechanism of the present invention.

[0035] Reference numeral

[0036] 1. Housing; 101. Mounting groove; 102. First positioning portion; 103. Second positioning portion; 2. Accessory handle; 21. Handle mounting hole; 22. First fixing portion; 23. Guide overlapping portion; 24. First positioning connection portion; 3. Mechanical lock; 31. Pushing end; 32. Limiting end; 33. Abutting portion; 34. Locking member limiting portion; 35. Elastic buffer groove; 36. Locking hole; 4. Upper bracket; 41. Upper bracket mounting hole; 42. Bracket limiting portion; 5. Lower bracket; 51. Lower bracket mounting hole; 52. First mounting portion; 53. Second mounting portion; 6. Linkage mechanism; 61. First lock; 611. Lock mounting hole; 612. Locking portion; 613. Second fixing portion; 62. First jump lock; 621. Jump lock mounting hole; 622. Locking portion; 623. Elastic body; 624. Second positioning connection portion; 63. First connecting rod; 7. Left contact; 8. Right contact; 9. Lower left wiring row; 10. Middle left wiring row; 11. Middle right wiring row; 12. Lower right wiring row; 13. Test button; 14. Circuit breaker mechanism; 141. Circuit breaker handle; 142. Second connecting rod; 143. Second lock; 144. Second jump lock; 145. Linkage member. Detailed implementation mode

[0037] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] The present invention provides a circuit breaker accessory with a mechanical lock, as Figures 1 - 11 shown. The circuit breaker accessory with a mechanical lock includes a housing 1, and an accessory handle 2, a mechanical lock 3, an upper bracket 4, a lower bracket 5, a left contact 7, a right contact 8, a lower left wiring row 9, a middle left wiring row 10, a middle right wiring row 11 and a lower right wiring row 12 are arranged in the housing 1.

[0040] A handle mounting hole 21 is arranged on the accessory handle 2, and the accessory handle 2 is rotatably arranged on the housing 1 through the handle mounting hole 21.

[0041] The upper bracket 4 is provided with an upper bracket mounting hole 41, and the lower bracket 5 is provided with a lower bracket mounting hole 51. The upper bracket mounting hole 41 and the lower bracket mounting hole 51 are coaxially arranged. The upper bracket 4 and the lower bracket 5 are coaxially and rotatably arranged on the housing 1. The upper bracket 4 is located above the lower bracket 5. The upper bracket 4 and the lower bracket 5 are independent of each other and can rotate synchronously or separately and independently.

[0042] The mechanical lock 3 is slidably arranged on the housing 1.

[0043] The left contact 7 is mounted on the first support bar, and the first support bar is connected to the upper bracket 4. The left contact 7 moves synchronously with the upper bracket 4.

[0044] The right contact 8 is mounted on the second support bar, and the second support bar is connected to the lower bracket 5. The right contact 8 moves synchronously with the lower bracket 5.

[0045] The lower bracket 5 is provided with a linkage mechanism 6, and the linkage mechanism 6 includes a first lock 61 and a first jump latch 62.

[0046] During use, when the mechanical lock function is not turned on, the first lock 61 is latched with the first jump latch 62. The accessory handle 2 drives the left contact 7 to contact the left lower wiring terminal 9 or the left middle wiring terminal 10 through the linkage mechanism 6, the lower bracket 5 and the upper bracket 4, and drives the right contact 8 to contact the right middle wiring terminal 11 or the right lower wiring terminal 12, so as to realize the auxiliary and alarm functions.

[0047] When the mechanical lock function is turned on, slide the mechanical lock 3 to a predetermined position. At this time, during the operation of the circuit breaker accessory, the first lock 61 can be separated from the first jump latch 62, and the linkage mechanism 6 is disconnected, so that the power of the accessory handle 2 is not transmitted to the left contact 7 and the right contact 8. Therefore, even if the accessory handle 2 is rotated to the closing position, the circuit breaker still will not close.

[0048] As Figure 1 shown, the housing 1 is provided with a limit guiding groove, and the accessory handle 2 rotates along the limit guiding groove. Figure 1 The accessory handle 2 is located at the starting end of the limit guiding groove and is in the open position at this time. When the accessory handle 2 slides along the limit guiding groove to the end, it is in the closing position.

[0049] Through the mutual cooperation of the upper bracket 4, the lower bracket 5 and the linkage mechanism 6, the present invention can adjust the contact between the contacts and the corresponding wiring terminals, so as to realize the auxiliary and alarm functions. By cutting off the transmission structure of the linkage mechanism 6 through the mechanical lock 3, the transmission effect is damaged, and the closing phenomenon caused by accident is avoided. Not only is the mechanical lock function safe and reliable, but also the opening and closing of the mechanical lock function are realized by sliding the mechanical lock 3, and the operation is convenient.

[0050] The present invention does not require the installation of too many circuit breaker accessories with different functions. Only by installing the circuit breaker accessory with a mechanical lock of the present invention can the auxiliary, alarm and mechanical lock functions be realized. It is not only convenient for installation and operation, but also effectively reduces the types of circuit breaker accessories, reduces the occupancy of the warehouse, and saves the use and management costs.

[0051] As an optional implementation manner, as Figures 7 - 9 shown, a first installation portion 52 and a second installation portion 53 are provided on the lower bracket 5. The first installation portion 52 is provided as a first installation post, and the second installation portion 53 is provided as a second installation post.

[0052] A locking hole 611 is provided through the first locking buckle 61. The first locking buckle 61 is rotatably arranged on the first installation post through the locking hole 611.

[0053] A jumping hole 621 is provided through the first jumping buckle 62. The first jumping buckle 62 is rotatably arranged on the second installation post through the jumping hole 621.

[0054] The first locking buckle 61 and the first jumping buckle 62 adopt the column-hole installation method. On the basis of ensuring the rotation effect of the first locking buckle 61 and the first jumping buckle 62, the structure is simple and the installation is firm.

[0055] A locking portion 612 is provided on the first locking buckle 61, and a locking portion 622 is provided on the first jumping buckle 62. The locking portion 612 is provided as a locking groove, and the locking portion 622 is provided as a locking block. The locking block is adapted to the locking groove.

[0056] During the process of the accessory handle 2 rotating from the opening position to the closing position, the locking portion 612 can be locked with the locking portion 622, so as to transmit the power of the accessory handle 2 to the upper bracket 4 and the lower bracket 5, and then to the left contact 7 and the right contact 8.

[0057] As an optional implementation manner, as Figure 3 and Figure 5 shown, an installation groove 101 is provided on the housing 1 and communicated with its inner cavity. The two ends of the mechanical lock 3 are respectively provided as a pulling end 31 and a limiting end 32. The pulling end 31 is used for the user to pull up or press the mechanical lock 3. The limiting end 32 is slidably inserted into the housing 1 along the installation groove 101. The installation groove 101 can effectively limit the sliding track of the mechanical lock 3 and ensure the smoothness of its sliding process.

[0058] The first jumping buckle 62 is provided with an elastic body 623, and the mechanical lock 3 is provided with an abutting portion 33. The abutting portion 33 is provided as a transverse rib.

[0059] Slide the mechanical lock 3 along the installation groove 101 to a predetermined position. During the operation of the first locking buckle 61 and the first toggle buckle 62, the abutting portion 33 can abut against the elastic body 623. Under the action of the elastic body 623, the first toggle buckle 62 rotates independently along the second mounting post, so that the locking portion 612 is separated from the locking portion 622, the first toggle buckle 62 is separated from the first locking buckle 61, and the transmission structure is disconnected, thereby preventing the power of the accessory handle 2 from being transmitted to the left contact 7 and the right contact 8, and the locking function of the mechanical lock is remarkable.

[0060] As an alternative embodiment, as Figure 3 and Figure 5 shown, a first positioning portion 102 and a second positioning portion 103 are provided in the housing 1. The first positioning portion 102 is provided as a positioning protrusion, the second positioning portion 103 is provided as a positioning block, the mechanical lock 3 is provided with a lock member limiting portion 34, and the lock member limiting portion 34 is provided as a limiting protrusion.

[0061] When the mechanical lock 3 is in the pressed position, the lock member limiting portion 34 abuts against the lower side of the first positioning portion 102, and the limiting end 32 abuts against the second positioning portion 103. In this state, the first locking buckle 61 and the first toggle buckle 62 can be locked through the locking portion 612 and the locking portion 622.

[0062] When the mechanical lock 3 is in the pulled-up position, the lock member limiting portion 34 abuts against the upper side of the first positioning portion 102, and the abutting portion 33 can abut against the elastic body 623. In this state, under the action of the elastic body 623, the locking portion 622 and the locking portion 612 cannot be locked.

[0063] As an alternative embodiment, as Figure 5 shown, an elastic buffer groove 35 is provided at a position of the mechanical lock 3 close to the pressing and pulling end 31.

[0064] The elastic buffer groove 35 gives the pressing and pulling end 31 a certain elasticity. During the sliding process of the mechanical lock 3, the pressing and pulling end 31 can be deformed under the action of the installation groove 101. On the one hand, it is convenient for the mechanical lock 3 to slide, and on the other hand, under the action of the deformation recovery force, the mechanical lock 3 is more stable in the pressed position state or the pulled-up position state.

[0065] As an alternative embodiment, as Figure 5 shown, a locking hole 36 is provided through the pressing and pulling end 31.

[0066] When the mechanical lock function is turned on, the mechanical lock 3 is adjusted to the pulled-up state, and the limit locking member is passed through the locking hole 36. At this time, the limit locking member can abut against the outer wall of the housing 1, and the mechanical lock 3 is locked to the pulled-up position, which can effectively prevent the locking function from failing due to the mechanical lock 3 being accidentally pressed.

[0067] As an alternative embodiment, as Figure 2As shown, the linkage mechanism 6 further includes a first connecting rod 63. A first fixing portion 22 is provided on the accessory handle 2, and a second fixing portion 613 is provided on the first latch 61.

[0068] Both the first fixing portion 22 and the second fixing portion 613 are set as fixing holes. Two ends of the first connecting rod 63 are respectively rotatably arranged on the first fixing portion 22 and the second fixing portion 613.

[0069] Adopting a connecting rod transmission structure, on the basis of ensuring the transmission effect, the structure is simple and the cost is low.

[0070] As an optional implementation manner, as Figure 4 and Figure 6 shown, a guiding and lapping portion 23 is provided on the accessory handle 2. The guiding and lapping portion 23 is set as a lapping block, which is arc-shaped. Its arc section mainly plays a guiding role, and the end portion has a lapping function.

[0071] A bracket limiting portion 42 is provided on the upper bracket 4. The bracket limiting portion 42 is set as a limiting protrusion.

[0072] When the mechanical lock function is not turned on and the accessory handle 2 moves from the closing state to the opening state, the bracket limiting portion 42 can lap onto the guiding and lapping portion 23, thereby limiting the relative position of the upper bracket 4 and making it in a static state, so as to realize the separation of the upper bracket 4 and the lower bracket 5 during the subsequent movement process.

[0073] As an optional implementation manner, as Figure 4 and Figure 11 shown, a first positioning and connecting portion 24 is provided on the accessory handle 2. The first positioning and connecting portion 24 is set as a first connecting column. A first connecting groove is provided at a position corresponding to the first positioning and connecting portion 24 on the circuit breaker handle 141 of the circuit breaker mechanism 14. The first connecting column is adapted to the first connecting groove, and the first connecting column is inserted into the first connecting groove, and the accessory handle 2 and the circuit breaker handle 141 move synchronously.

[0074] As Figure 9 and Figure 11 shown, a second positioning and connecting portion 624 is provided on the first tripping latch 62. The second positioning and connecting portion 624 is set as a second connecting column. A second connecting groove is provided at a position corresponding to the second positioning and connecting portion 624 on the linkage member 145 of the circuit breaker mechanism 14. The second connecting column is adapted to the second connecting groove, and the second connecting column is inserted into the second connecting groove, and the linkage member 145 and the first tripping latch 62 move synchronously.

[0075] With such a setting, the circuit breaker mechanism 14 and the circuit breaker accessory with a mechanical lock can be effectively linked.

[0076] As an optional implementation manner, as Figure 1As shown, the circuit breaker accessory includes a test button 13, which is used for the test of leakage protection. Its structure and principle are the same as those of the test button of the existing leakage circuit breaker.

[0077] Embodiment 2:

[0078] Embodiment 2 is based on Embodiment 1:

[0079] The present invention provides a circuit breaker, as Figure 1 、 Figure 10 and Figure 11 shown, the circuit breaker includes a circuit breaker mechanism 14 and the circuit breaker accessory with a mechanical lock.

[0080] The circuit breaker mechanism 14 includes a circuit breaker handle 141, a second connecting rod 142, a second locking buckle 143, a linkage member 145 and a second tripping buckle 144. The circuit breaker handle 141 is connected to the second locking buckle 143 through the second connecting rod 142. The second tripping buckle 144 is connected to the linkage member 145, and the linkage member 145 can be locked with the second locking buckle 143.

[0081] Working process:

[0082] The mechanical lock locking function of the present invention is not turned on:

[0083] As Figures 1 - 11 shown, the accessory handle 2 rotates clockwise synchronously with the circuit breaker handle 141 to the closing position. The accessory handle 2 drives the first connecting rod 63 to move, and the first locking buckle 61 rotates synchronously. When the locking portion 612 moves to the corresponding locking portion 622, the two are locked. The first tripping buckle 62 rotates synchronously with the first locking buckle 61, and the lower bracket 5 and the upper bracket 4 also rotate synchronously. When the accessory handle 2 is in place for closing, the left contact 7 contacts the lower left wiring terminal 9 and sends a signal.

[0084] During the process of the accessory handle 2 rotating counterclockwise to the opening position, at the initial movement, the accessory handle 2 rotates counterclockwise, and the lower bracket 5 and the upper bracket 4 do not rotate. When the accessory handle 2 rotates to the corresponding position, the lower bracket 5 and the upper bracket 4 rotate synchronously, and the bracket limiting portion 42 overlaps with the guiding overlapping portion 23. At this time, the upper bracket 4 is kept stationary under the limiting effect, and the lower bracket 5 is separated from the upper bracket 4 driven by the accessory handle 2 until the lower bracket 5 and the accessory handle 2 rotate to the opening position. At this time, the upper bracket 4 still remains in the closing position, the left contact 7 contacts the lower left wiring terminal 9, and the signal does not change. The lower bracket 5 drives the right contact 8 to act, and the right contact 8 contacts the lower right wiring terminal 12 to send a closing auxiliary signal, realizing the auxiliary function of the accessory.

[0085] When the accessory handle 2 is in the closing position, the first trip latch 62 rotates around the second mounting post, the locking portion 612 and the locking portion 622 are separated, the mechanism balance is destroyed, the accessory handle 2 quickly rotates to the opening position, the bracket limiting portion 42 and the guiding and lapping portion 23 cannot contact each other, the upper bracket 4 cannot be maintained in the closing position, the left contact 7 and the lower left wiring row 9 are separated, a break point signal is sent, the left contact 7 and the left middle wiring row 10 are disengaged, a closing signal is sent, thereby triggering an alarm signal, the lower bracket 5 drives the right contact 8 to act, the right contact 8 and the right middle wiring row 11 are disengaged to send an opening signal, realizing the auxiliary and alarm functions.

[0086] The locking function of the mechanical lock of the present invention is turned on:

[0087] As Figures 1 - 11 shown, pull the mechanical lock 3 upward, the mechanical lock 3 moves along the mounting groove 101, the limiting end 32 is separated from the second positioning portion 103, the lock piece limiting portion 34 slides from the lower side to the upper side of the first positioning portion 102, the pressing end 31 abuts against the mounting groove 101 under the buffering action of the elastic buffer groove 35, and the mechanical lock 3 is stabilized to the pulled-up position.

[0088] In the above process, the limiting locking member is passed through the locking hole 36, and the limiting action of the limiting locking member further improves the stability of the mechanical lock 3 when it is in the pulled-up position.

[0089] When the mechanical lock 3 is in the pulled-up position, the accessory handle 2 rotates clockwise synchronously with the circuit breaker handle 141 to the closing position, the accessory handle 2 drives the first connecting rod 63 to move, the first latch 61 rotates synchronously, when the locking portion 612 moves to the locking portion 622, the two are locked, the first trip latch 62 rotates synchronously with the first latch 61, and the lower bracket 5 and the upper bracket 4 also rotate synchronously. When the elastic body 623 of the first trip latch 62 abuts against the abutting portion 33, the first trip latch 62 and the first latch 61 have relative movement until the locking portion 612 and the locking portion 622 are separated. At this time, the first latch 61 and the first trip latch 62 are separated, and the first latch 61, the first trip latch 62 and the lower bracket 5 move independently. The lower bracket 5 returns to the initial position under the action of the circuit breaker spring, the accessory handle 2 returns to the opening position, the first trip latch 62 drives the linkage 145 to move synchronously, the second trip latch 144 and the second latch 143 cannot contact each other, the movement mode of the circuit breaker mechanism 14 is the same as that of the circuit breaker accessory with a mechanical lock, the circuit breaker handle 141 also returns to the opening position, and the closing of the circuit breaker mechanism 14 and the circuit breaker accessory with a mechanical lock fails, realizing the locking function of the mechanical lock.

[0090] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0091] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" and "several" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0092] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0093] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A circuit breaker accessory with a mechanical lock, characterized in that, The invention comprises a housing, in which an accessory handle, a mechanical lock, an upper bracket, a lower bracket, a left contact, a right contact, a left lower wiring bank, a left middle wiring bank, a right middle wiring bank and a right lower wiring bank are arranged, wherein: The accessory handle is rotatably arranged on the housing, the upper bracket and the lower bracket are coaxially rotatably arranged on the housing, the upper bracket is located on the upper side of the lower bracket, and the lower bracket is provided with a linkage mechanism, and the linkage mechanism includes a first lock buckle and a first jump buckle; The first lock buckle is transmission-connected to the accessory handle, and the first lock buckle can be locked with the first jump buckle, so that the accessory handle drives the left contact to contact the left lower wiring bar or the left middle wiring bar through the linkage mechanism, the lower bracket and the upper bracket, and drives the right contact to contact the right middle wiring bar or the right lower wiring bar; The mechanical lock is slidably disposed on the housing, and when the mechanical lock is slid to a predetermined position, the first lock buckle can be separated from the first jump buckle; The lower bracket is provided with a first mounting portion and a second mounting portion, wherein: the first lock buckle is rotatably provided on the first mounting portion; the first jump buckle is rotatably provided on the second mounting portion; The first lock buckle is provided with a locking portion, and the first jump buckle is provided with a locking portion, and the locking portion can be locked with the locking portion.

2. The circuit breaker accessory with a mechanical lock according to claim 1, characterized in that, The shell is provided with a mounting groove in communication with its inner cavity, and two ends of the mechanical lock are respectively provided with a push-pull end and a limit end, and the limit end is slidably inserted into the shell along the mounting groove; The first jump buckle is provided with an elastic body, and the mechanical lock is provided with an abutment portion. When the mechanical lock is slid to a predetermined position, the abutment portion can abut against the elastic body, so that the locking portion can be separated from the locking portion.

3. The circuit breaker accessory with a mechanical lock according to claim 2, characterized in that, The housing is provided with a first positioning portion and a second positioning portion, and the mechanical lock is provided with a lock limiting portion, wherein: When the mechanical lock is in the pressing position, the lock limiting portion abuts against the lower side of the first positioning portion, and the limiting end abuts against the second positioning portion; When the mechanical lock is in the pulled-up position, the locking element limiting portion abuts against the upper side of the first positioning portion, and the abutting portion abuts against the elastic body.

4. The circuit breaker accessory with a mechanical lock according to claim 3, characterized in that, The mechanical lock is provided with an elastic buffer groove near the push-pull end.

5. The circuit breaker accessory with a mechanical lock according to claim 3, characterized in that, The push-pull end is provided with a locking hole through it, and the limit locking piece can pass through the locking hole and abut against the outer wall of the shell to lock the mechanical lock to the pulled-up position.

6. The circuit breaker accessory with a mechanical lock according to claim 1, characterized in that, The linkage mechanism also includes a first connecting rod, a first fixing portion is arranged on the accessory handle, a second fixing portion is arranged on the first locking buckle, and two ends of the first connecting rod are rotatably arranged on the first fixing portion and the second fixing portion respectively.

7. The circuit breaker accessory with a mechanical lock according to claim 1, characterized in that, The accessory handle is provided with a guide overlapping portion, and the upper bracket is provided with a bracket limiting portion, and the bracket limiting portion can be overlapped to the guide overlapping portion.

8. The circuit breaker accessory with a mechanical lock according to claim 1, characterized in that, The accessory handle is provided with a first positioning connection portion for connecting to a circuit breaker handle of a circuit breaker mechanism; The first trip buckle is provided with a second positioning connection portion for connecting a linkage member of a circuit breaker mechanism.

9. A circuit breaker, characterized in that, It includes a circuit breaker mechanism and a circuit breaker accessory with a mechanical lock as described in any one of claims 1-8.

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