A quick disconnect operating mechanism

Abstract

The invention discloses a fast-disconnecting operating mechanism, which belongs to the technical field of circuit breaker switches, and includes a handle, a rotating clamp, a contact torsion spring, a rotating rod, a double-metal pull rod, a moving contact, a locking member and a linkage rod. The handle is installed between an upper cover and a lower cover, the rotating rod is installed between the upper cover and the lower cover, a rotating clamp is sleeved on the rotating rod, the locking member is sleeved on the rotating rod, the locking member is arranged above the rotating clamp, and two ends of the linkage rod are respectively installed on the handle and the locking member, the moving contact is sleeved on the rotating rod, the moving contact is respectively arranged at the upper end of the locking member and the lower end of the rotating clamp, the contact torsion spring is sleeved on the rotating rod, the two ends of the contact torsion spring are respectively connected to the moving contact and the rotating clamp, and the double-metal pull rod is installed on the end of the moving contact. The invention solves the problem in the prior art that the transmission efficiency is affected because the existing circuit breaker adopts a jump buckle and a lock buckle connection, and relative friction is generated between the jump buckle and the lock buckle. The safety and practicality of the circuit breaker are improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker switches, and in particular to a fast-breaking operating mechanism. Background Art

[0002] For the circuit breaker structure, switches are required to realize circuit breaking and circuit connection operations, thereby realizing overcurrent protection and circuit connection.

[0003] The actuator mechanism of the circuit breaker of the prior art is connected with the connecting rod by a jumper, but this connection method will cause relative friction between the jumper and the lock, and the transmission efficiency of the connecting rod will be affected. In addition, due to the bite connection between the jumper and the lock, after long-term use, the bite will not be enough.

[0004] Therefore, how to provide a fast-disconnecting operating mechanism to solve the defects of existing circuit breakers is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] To this end, the present invention provides a fast disconnecting operating mechanism to solve the problem in the prior art that the transmission efficiency is affected due to relative friction between the jumper and the lock catch, as the existing circuit breaker adopts a jumper and a lock catch connection.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The invention discloses a quick disconnecting operating mechanism, comprising:

[0008] A handle is installed between the upper cover and the lower cover. The upper cover and the lower cover are provided with mounting holes, and the handle is arranged in the mounting holes.

[0009] A rotating rod is installed between the upper cover and the lower cover, and a rotating clamp is sleeved on the rotating rod;

[0010] A locking member, sleeved on the rotating rod, and the locking member is arranged above the rotating clamp;

[0011] A linkage rod, with two ends respectively mounted on the handle and the locking member;

[0012] The moving contacts are arranged in pairs and sleeved on the rotating rod. The moving contacts are respectively arranged at the upper end of the locking member and the lower end of the rotating clamp. A middle cover is arranged between the upper cover and the lower cover. The moving contacts are respectively arranged at the upper and lower ends of the middle cover.

[0013] A contact torsion spring is sleeved on the rotating rod, and two ends of the contact torsion spring are respectively connected to the moving contact and the rotating clamp;

[0014] A double gold pull rod is installed on the end of the moving contact, and the double gold pull rod is arranged above the middle cover.

[0015] In a possible implementation, a manual shutoff assembly is installed between the upper cover and the lower cover;

[0016] The manual shutoff assembly comprises:

[0017] A button spring, one end of which is inserted into the lock member, a connecting rod is provided on the lower cover, the button spring is sleeved on the connecting rod, and the other end of the button spring is connected to a moving block;

[0018] A button is installed at one end of the moving block, and one end of the button passes through the side walls of the upper cover and the lower cover.

[0019] In a possible implementation, a return spring is installed between the rotating clamp and the inner left surface of the lower cover.

[0020] In one possible implementation, an insertion rod is provided in the mounting hole, the handle is transmission-connected to the insertion rod, a connecting head is provided on the inner surface of the lower cover, a handle spring is sleeved on the insertion rod, and the handle spring is provided inside the bottom end of the handle, and two end points of the handle spring pass through the side wall of the handle and are respectively connected to the connecting head and the rotating clamp.

[0021] In a possible implementation, a locking spring is sleeved on the rotating rod, the locking spring is arranged between the locking member and the rotating clamp, and two ends of the locking spring are respectively inserted into the locking member and the rotating clamp.

[0022] In a possible implementation, the locking member includes:

[0023] A card block, with a sleeve disposed on its surface, a lever inserted in the sleeve, and the lever passing through the lower cover;

[0024] A mounting hole is provided on the clamping block, and the mounting hole is sleeved on the outside of the rotating rod;

[0025] A circular hole is provided at the end of the block, and one end of a double-metal pull rod is installed in the circular hole.

[0026] In a possible implementation, a circuit breaker assembly is inserted into the end of the connecting rod;

[0027] The circuit breaker assembly comprises:

[0028] The transmission gear has connecting rods installed on both surfaces, and the connecting rods are respectively inserted into the slots on the connecting rod and the inner surface of the upper cover;

[0029] A first rack, mounted on the upper end of the moving block, the first rack being meshed and connected with the transmission gear;

[0030] The second rack has a mounting rod on the upper surface of one end, the upper end of the mounting rod is inserted into the locking member, and the other end of the second rack is meshed and connected with the transmission gear.

[0031] In a possible implementation, a side plate is disposed on the lower surface of the upper cover, a limit assembly is installed on the surface of the side plate, and the other end of the limit assembly is sleeved on the double metal pull rod.

[0032] In a possible implementation, the limiting component includes:

[0033] A rotating member, mounted on the surface of the side plate;

[0034] A first rotating plate, one end of which is transmission-connected to the rotating member, the other end of which is transmission-connected to a second rotating plate, and the other end of which is provided with a rotating rod;

[0035] A third rotating plate, one end of which is mounted on the other end of the second rotating plate, and the rotating rod passes through the end of the third rotating plate and the end of the second rotating plate in sequence;

[0036] A clamping ring is installed at the other end of the third rotating plate.

[0037] The present invention drives the rotating clamp to rotate by a handle. When the rotating clamp rotates, the locking member flips and drives the two moving contacts to rotate. The moving contact contacts the static contact to connect the circuit. After the moving contact moves, the contact torsion spring will tighten. When the circuit is broken, the push rod in the iron core pushes the moving contact to move. At this time, the contact torsion spring will drive the moving contact to move quickly under the action of elastic force, and the circuit breaking operation is quickly completed. Compared with the tripping buckle and locking buckle used in the existing circuit breaker, the use of the contact torsion spring and the moving contact can speed up the circuit breaking operation and reduce the tripping force and reduce the slipping buckle caused by wear. Moreover, the same locking member is controlled to make the pressure of the moving contacts at both ends evenly balanced, thereby avoiding the problem of uneven contact pressure distribution at both ends of the double breakpoints of a single contact, thereby avoiding the problem of uncontrollable different losses of the two moving contacts, and improving the versatility of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0039] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0040] Figure 1 A three-dimensional diagram of the operating mechanism for quick disconnection provided by the present invention;

[0041] Figure 2 A three-dimensional diagram of the manual shutoff assembly provided by the present invention;

[0042] Figure 3 A three-dimensional diagram of the lower cover provided by the present invention;

[0043] Figure 4 A three-dimensional diagram of a locking member provided by the present invention;

[0044] Figure 5 A three-dimensional diagram of a circuit breaker assembly provided by the present invention;

[0045] Figure 6 A three-dimensional diagram of the upper cover provided by the present invention;

[0046] Figure 7 A three-dimensional diagram of the limiting assembly provided by the present invention;

[0047] In the figure: 1 handle; 2 rotating clamp; 3 contact torsion spring; 4 rotating rod; 5 double gold pull rod; 6 moving contact; 7 locking piece; 71 clamp block; 72 sleeve; 73 round hole; 74 mounting hole; 8 linkage rod; 9 manual shut-off assembly; 91 button; 92 moving block; 93 button spring; 10 handle spring; 11 plug rod; 12 connector; 13 circuit breaker assembly; 131 second rack; 132 transmission gear; 133 first rack; 134 connecting rod; 14 side plate; 15 limit assembly; 151 snap ring; 152 second rotating plate; 153 rotating rod; 154 rotating member; 155 first rotating plate; 156 third rotating plate. DETAILED DESCRIPTION

[0048] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Please refer to Figure 1-Figure 7Now, a quick disconnection operating mechanism disclosed in the present invention is described. The present invention is composed of fifteen parts, such as Figure 1 , including a handle 1, a rotating card 2, a contact torsion spring 3, a rotating rod 4, a double gold pull rod 5, a moving contact 6, a lock piece 7 and a linkage rod 8. The handle 1 is installed between the upper cover and the lower cover, and mounting holes are provided on the upper cover and the lower cover. The handle 1 is arranged in the mounting hole. The rotating rod 4 is installed between the upper cover and the lower cover. The rotating rod 4 is sleeved with a rotating card 2, the lock piece 7 is sleeved on the rotating rod 4, and the lock piece 7 is arranged above the rotating card 2. The two ends of the linkage rod 8 are respectively installed on the handle 1 and the lock piece 7. The moving contacts 6 are arranged in pairs and sleeved on the rotating rod 4. The moving contacts 6 are respectively arranged at the upper end of the lock piece 7 and the lower end of the rotating card 2. A middle cover is provided between the upper cover and the lower cover. The moving contacts 6 are respectively arranged at the upper and lower ends of the middle cover. The contact torsion spring 3 is sleeved on the rotating rod 4. The two ends of the contact torsion spring 3 are respectively connected to the moving contact 6 and the rotating card 2. The double gold pull rod 5 is installed on the end of the moving contact 6, and the double gold pull rod 5 is arranged above the middle cover.

[0050] When the present invention is in use, when the circuit needs to be connected, the handle 1 is pulled, the handle 1 will move with the linkage rod 8, the linkage rod 8 will push the rotating clamp 2 to rotate along the rotating rod 4, the rotating clamp 2 will drive the lock member 7 to rotate, when the lock member 7 rotates, the two moving contacts 6 will also rotate along the rotating rod 4, at this time, the contact torsion spring 3 will be tightened, and the moving contact 6 will contact with the static contact, and the whole circuit will be turned on; when the circuit needs to be disconnected, the inductor coil in the circuit breaker generates a magnetic field, the magnetic field generates a magnetic induction force, the magnetic induction force will drive the push rod in the iron core to move, the push rod will push the lock member 7 back to the initial position, and at the same time, when the push rod When the rod is pushed, the tightened contact torsion spring 3 returns to its original state under the action of elastic force. At this time, the contact torsion spring 3 will quickly reset the moving contact and quickly complete the circuit breaking operation. When the locking piece 7 is reset, it will also drive the handle 1 to reset, which is convenient for restarting the circuit breaker after circuit maintenance. Normal circuit breakers generally adopt a double tripping mechanism. Another circuit breaking method is through the double gold component in the circuit breaker. The double gold component will be heated and bent when the current is abnormal. The bent double gold component will push the double gold pull rod 5 to move, and the double gold pull rod 5 will pull the locking piece 7 and complete the same operation as the above-mentioned circuit breaking operation.

[0051] In a specific embodiment, Figure 2A manual shutoff assembly 9 is installed between the upper cover and the lower cover; the manual shutoff assembly 9 includes a button 91, a moving block 92 and a button spring 93. One end of the button spring 93 is inserted into the lock member 7. A connecting rod is provided on the lower cover. The button spring 93 is sleeved on the connecting rod. The other end of the button spring 93 is connected to the moving block 92. The button 91 is installed at one end of the moving block 92. One end of the button 91 passes through the side walls of the upper cover and the lower cover. The manual shutoff assembly 9 drives the moving block 92 to move through the button 91, and then the moving block 92 causes the button spring 93 to push the lock member 7 to move to complete the circuit breaker reset.

[0052] Based on the previous embodiment, Figure 5 , a circuit breaker assembly 13 is inserted at the end of the connecting rod; the circuit breaker assembly 13 includes a second rack 131, a transmission gear 132, a first rack 133 and a connecting rod 134. The connecting rods 134 are installed on both surfaces of the transmission gear 132, and the connecting rods 134 are respectively inserted in the slots on the connecting rod and the inner surface of the upper cover. The first rack 133 is installed on the upper end of the moving block 92, and the first rack 133 is meshed with the transmission gear 132. A mounting rod is provided on the upper surface of one end of the second rack 131, and the upper end of the mounting rod is inserted in the lock 7. The other end of the second rack 131 is meshed with the transmission gear 132. The circuit breaker assembly 13 is an auxiliary reset mechanism. The moving block 92 and the button spring 93 are equivalent to a soft connection structure. The spring will age and fail after a long period of use. Therefore, by setting the gear and the rack, not only can the problem of spring aging be avoided, but also the two components can be driven at the same time to speed up the circuit breaker. The use of the circuit breaker assembly 13 is to press the button 91, which drives the moving block 92 to move. The moving block 92 moves and drives the first rack 133 to move. The meshing connection between the first rack 133 and the transmission gear 132 drives the transmission gear 132 to rotate. After the transmission gear 132 rotates, it drives the second rack 131 to move. At this time, because the second rack 131 is connected to the locking member 7, the locking member 7 is pushed to reset.

[0053] In a specific embodiment, a return spring is installed between the rotating card 2 and the left inner surface of the lower cover. The return spring will be in a stretched state after the handle 1 is turned over. When the handle 1 is reset, the return spring will pull the rotating card 2 back under the action of elastic force to speed up the circuit breaking efficiency.

[0054] In a specific embodiment, Figure 3, an insertion rod 11 is provided in the mounting hole, the handle 1 is connected to the insertion rod 11 in a transmission manner, a connector 12 is provided on the inner surface of the lower cover, a handle spring 10 is sleeved on the insertion rod 11, the handle spring 10 is provided inside the bottom end of the handle 1, and the two ends of the handle spring 10 pass through the side wall of the handle 1 and are respectively connected to the connector 12 and the rotating clamp 2. The handle spring 10 will become a tightened state after the handle 1 is rotated. When the handle 1 is reset, the tightened handle spring 10 quickly resets the handle 1 under the action of elastic force.

[0055] In a specific embodiment, a lock spring is sleeved on the rotating rod 4, and the lock spring is arranged between the lock member 7 and the rotating clamp 2, and the two ends of the lock spring are respectively inserted in the lock member 7 and the rotating clamp 2. The function of the lock spring is different from that of other springs. The lock spring prevents the lock member 7 and the rotating clamp 2 from being misaligned. When the lock member 7 and the rotating clamp 2 are misaligned, the lock spring will be tightened. However, when the tension of the lock spring reaches a certain limit, the lock member 7 and the rotating clamp 2 will be pulled back to their original positions under the action of elastic force, which can effectively prevent misalignment.

[0056] In a specific embodiment, Figure 4 The lock piece 7 includes a block 71, a sleeve 72, a round hole 73 and a mounting hole 74. The block 71 is provided with a sleeve 72 on its surface, a lever is inserted in the sleeve, and the lever passes through the lower cover. The mounting hole 74 is provided on the block 71, and the mounting hole 74 is sleeved on the outside of the rotating rod 4. The round hole 73 is provided at the end of the block 71, and one end of the double-metal pull rod 5 is installed in the round hole 73. The design of the mounting hole 74 allows the entire block 71 to rotate. The design of the sleeve 72 and the lever is used for external gate closing operation. When the lever is pulled, the entire lock piece 7 will move to complete the gate closing operation, and the double-metal pull rod 5 will be installed in the round hole 73.

[0057] In a specific embodiment, Figure 6 A side plate 14 is provided on the lower surface of the upper cover, and a limit assembly 15 is installed on the surface of the side plate 14, and the other end of the limit assembly 15 is sleeved on the double-gold pull rod 5. When the double-gold assembly pushes the double-gold pull rod 5 to move, because it pushes the round rod on the double-gold pull rod 5, the round rod may slide along the double-gold assembly during the pushing process, causing the position of the double-gold pull rod 5 to shift and unable to reach the previous position, resulting in the inability to complete the closing operation, or when the gate is closed, the double-gold assembly is bent and cannot push the double-gold pull rod 5 to the position where the gate can be closed, so it is necessary to sleeve the limit assembly 15 on the double-gold pull rod 5 to limit the moving position of the double-gold pull rod 5 to prevent the above problems.

[0058] In a specific embodiment, Figure 7The limiting assembly 15 includes a snap ring 151, a second rotating plate 152, a rotating rod 153, a rotating member 154, a first rotating plate 155 and a third rotating plate 156. The rotating member 154 is installed on the surface of the side plate 14. One end of the first rotating plate 155 is transmission-connected to the rotating member 154. The other end of the first rotating plate 155 is transmission-connected to the second rotating plate 152. The other end of the second rotating plate 152 is provided with a rotating rod 153. One end of the third rotating plate 156 is installed at the other end of the second rotating plate 152. The rotating rod 153 passes through the end of the third rotating plate 156 and the end of the second rotating plate 152 in sequence. The snap ring 151 is installed at the other end of the third rotating plate 156. When the limit assembly 15 is in use, the snap ring 151 is sleeved on the round rod on the double metal pull rod 5. When the handle 1 is flipped, the movement of the lock piece 7 will pull the double metal pull rod 5 to move. When the double metal pull rod 5 moves, it will drive the three rotating plates to rotate, lengthening the distance between them. When the circuit needs to be disconnected, the double metal assembly bends, pushing the snap ring 151 to move, and causing the three rotating plates to flip again and retract together. In addition to limiting the moving position, the limit assembly 15 can also effectively alleviate the circuit breaking and have a buffering effect on the movement of the double metal pull rod 5.

[0059] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A quick-disconnect operating mechanism, characterized in that: include: A handle (1) is installed between the upper cover and the lower cover, the upper cover and the lower cover are provided with mounting holes, and the handle (1) is arranged in the mounting holes; A rotating rod (4) is installed between the upper cover and the lower cover, and a rotating clamp (2) is sleeved on the rotating rod (4); A locking member (7) is sleeved on the rotating rod (4), and the locking member (7) is arranged above the rotating clamp (2); A linkage rod (8), two ends of which are respectively mounted on the handle (1) and the locking member (7); The moving contacts (6) are arranged in pairs and sleeved on the rotating rod (4). The moving contacts (6) are respectively arranged at the upper end of the locking member (7) and the lower end of the rotating clamp (2). A middle cover is arranged between the upper cover and the lower cover. The moving contacts (6) are respectively arranged at the upper and lower ends of the middle cover. A contact torsion spring (3) is sleeved on the rotating rod (4), and two ends of the contact torsion spring (3) are respectively connected to the moving contact (6) and the rotating clamp (2); A double-metal pull rod (5) is mounted on the end of the moving contact (6), and the double-metal pull rod (5) is arranged above the middle cover; A manual shutoff assembly (9) is installed between the upper cover and the lower cover; The manual shutoff component (9) comprises: A button spring (93), one end of which is inserted into the locking member (7), a connecting rod is provided on the lower cover, the button spring (93) is sleeved on the connecting rod, and the other end of the button spring (93) is connected to a moving block (92); A button (91) is mounted on one end of the moving block (92), and one end of the button (91) passes through the side walls of the upper cover and the lower cover; A circuit breaker assembly (13) is inserted into the end of the connecting rod; The circuit breaker assembly (13) comprises: A transmission gear (132) has connecting rods (134) installed on two surfaces, and the connecting rods (134) are respectively inserted into slots on the connecting rod and the inner surface of the upper cover; A first rack (133) is mounted on the upper end of the moving block (92), and the first rack (133) is meshingly connected with the transmission gear (132); The second rack (131) has a mounting rod on its upper surface at one end, the upper end of the mounting rod being inserted into the locking member (7), and the other end of the second rack (131) being meshedly connected with the transmission gear (132).

2. The quick-disconnect operating mechanism according to claim 1, characterized in that: A return spring is installed between the rotating clamp (2) and the inner left surface of the lower cover.

3. The quick-disconnect operating mechanism according to claim 1, characterized in that: An insertion rod (11) is arranged in the mounting hole, the handle (1) is transmission-connected to the insertion rod (11), a connector (12) is arranged on the inner surface of the lower cover, a handle spring (10) is sleeved on the insertion rod (11), the handle spring (10) is arranged inside the bottom end of the handle (1), two ends of the handle spring (10) pass through the side wall of the handle (1) and are respectively connected to the connector (12) and the rotating clamp (2).

4. The quick-disconnect operating mechanism according to claim 1, characterized in that: A locking spring is sleeved on the rotating rod (4), and the locking spring is arranged between the locking member (7) and the rotating clamp (2), and two ends of the locking spring are respectively inserted into the locking member (7) and the rotating clamp (2).

5. The quick-disconnect operating mechanism according to claim 1, characterized in that: The locking member (7) comprises: A clamping block (71) is provided with a sleeve (72) on its surface, a lever is inserted into the sleeve, and the lever passes through the lower cover; A mounting hole (74) is formed on the clamping block (71), and the mounting hole (74) is sleeved on the outside of the rotating rod (4); A circular hole (73) is provided at the end of the clamping block (71), and one end of a double-metal pull rod (5) is installed in the circular hole (73).

6. The quick-disconnect operating mechanism according to claim 1, characterized in that: A side plate (14) is arranged on the lower surface of the upper cover, a limit assembly (15) is installed on the surface of the side plate (14), and the other end of the limit assembly (15) is sleeved on the double metal pull rod (5).

7. The quick-disconnect operating mechanism according to claim 6, characterized in that: The limiting component (15) comprises: A rotating member (154) mounted on the surface of the side plate (14); A first rotating plate (155), one end of which is transmission-connected to the rotating member (154); the other end of the first rotating plate (155) is transmission-connected to a second rotating plate (152); the other end of the second rotating plate (152) is provided with a rotating rod (153); A third rotating plate (156), one end of which is mounted on the other end of the second rotating plate (152), and the rotating rod (153) passes through the end of the third rotating plate (156) and the end of the second rotating plate (152) in sequence; A snap ring (151) is mounted on the other end of the third rotating plate (156).

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