Operating mechanism and switching device

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switching device, the operating mechanism comprises an opening assisting structure, the opening assisting structure can apply opening assisting force to a rotating shaft of the operating mechanism before, when or after a main spring of the operating mechanism begins to release energy, and the opening assisting force enables the rotating shaft to rotate towards an opening position. Therefore, the operation mechanism and the switching device can be ensured to successfully carry out opening operation.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to an operating mechanism and a switch electrical appliance comprising the operating mechanism. Background Art

[0002] After actual use (for example, after multiple energized opening operations), the friction between the plug-in moving and static contacts of the existing rotary disconnector increases (even welding occurs). When the switch is manually opened through the operating mechanism, the energy storage spring of the operating mechanism may not be able to successfully drive the moving and static contacts to open, resulting in a failure to open the switch. Utility Model Content

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and to provide an operating mechanism and a switching device including the operating mechanism, wherein the mechanism body and the opening assist structure ensure that the rotating shaft can be successfully rotated to the opening position, thereby ensuring that the operating mechanism is successfully opened.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An operating mechanism, comprising a mechanism body and a rotating shaft for being connected to the moving contact mechanism of a switching electrical appliance, the rotating shaft being arranged to rotate around an axis oo and being located on one side of the mechanism body in the direction of the axis oo, the mechanism body comprising a body bracket, a rocker arm and a main shaft arranged on the body bracket to rotate around the axis o1-o1 and the axis oo respectively, a transmission structure connected to the main shaft and the rocker arm respectively, a connecting rod structure arranged on the body bracket and connected to the rotating shaft, and a main spring connected to the rocker arm and the connecting rod structure at both ends and used for providing a driving force for opening and closing the switch; the axis oo is arranged parallel to the axis o1-o1 and spaced apart; the operating mechanism also comprises a switch-opening assist structure that is directly or indirectly matched with the main shaft, and the switch-opening assist structure comprises an assist portion that performs a circular motion around the axis oo;

[0006] When the operating mechanism is opened, the main shaft is driven to rotate by external force, and the rotating shaft drives the rocker arm to rotate through the transmission structure. After the rocker arm drives the main spring to move to the maximum energy storage position, the main shaft continues to rotate and drives the main spring to cross the maximum energy storage position through the rocker arm. The main spring starts to release energy and drives the rotating shaft to rotate toward the opening position through the connecting rod structure; the power assisting part applies an opening auxiliary force to the rotating shaft to rotate it toward the opening position before, when or after the main spring starts to release energy.

[0007] Furthermore, the gate opening assist structure includes an assist turntable, which includes a turntable body rotatably arranged around an axis oo and an assist portion arranged on the turntable body, and the turntable body is directly or indirectly matched with the main shaft.

[0008] Furthermore, the turntable body is arranged on the main shaft and rotates synchronously with the main shaft.

[0009] Furthermore, the gate-opening assist structure also includes an assist link, which is respectively connected to the turntable body and the rocker arm transmission structure; the main shaft drives the rocker arm to rotate through the gate-opening assist structure and the transmission structure at the same time.

[0010] Furthermore, the transmission structure and the brake-opening assisting structure are respectively arranged on both sides of the main body bracket, and the brake-opening assisting structure is located between the main body bracket and the rotating shaft.

[0011] Furthermore, the turntable body and the power-assisting part are split structures, and the power-assisting part is a shaft rod connected to the turntable body at one end; the turntable body includes a turntable mounting hole, a turntable socket and a turntable connecting hole, the turntable body is sleeved on the main shaft through the turntable mounting hole, the shaft rod is inserted into the turntable socket hole, and the turntable body is hinged to the power-assisting connecting rod through the turntable connecting hole.

[0012] Furthermore, the turntable body and the power-assisting part are an integrated structure, and one end of the power-assisting part is connected to the edge of the turntable body by a bend; the turntable body includes a turntable mounting hole and a turntable connecting hole, the turntable body is sleeved on the main shaft through the turntable mounting hole, and the turntable body is hinged to the power-assisting connecting rod through the turntable connecting hole.

[0013] Furthermore, the brake opening assist structure is arranged between the main body bracket and the rotating shaft.

[0014] Furthermore, the rotating shaft includes a rotating shaft matching portion; when the operating mechanism opens the gate, the assisting portion abuts against the rotating shaft matching portion before, when, or after the main spring starts to release energy.

[0015] Furthermore, the shaft includes a shaft arc groove arranged on the side facing the mechanism body, one end of the power assisting part is inserted into the shaft arc groove, and one end of the shaft arc groove is provided with a shaft stop surface serving as a shaft matching part.

[0016] Furthermore, when the operating mechanism is opened, when the rocker arm drives the main spring to move to the maximum energy storage position, the position of the rocker arm is the critical position;

[0017] After the rocker arm continues to rotate past the first angle from the critical position, the main spring begins to release energy and drives the rotating shaft to rotate toward the opening position through the connecting rod structure.

[0018] Furthermore, when the operating mechanism opens the gate, after the rocker arm continues to rotate from the critical position to a second angle, the power assisting portion begins to apply an opening auxiliary force to the rotating shaft; the first angle ≤ the second angle.

[0019] Furthermore, 5°≤the second angle≤25°.

[0020] Furthermore, 0°<first angle≤30°.

[0021] Furthermore, the first angle is 5°.

[0022] Furthermore, when the operating mechanism is opened, the assisting part applies an auxiliary opening force to the rotating shaft to rotate it toward the opening position before the main spring starts to release energy; when the assisting part starts to apply the auxiliary opening force to the rotating shaft, the angle between the position of the rocker arm and the position of the rocker arm when the main spring starts to release energy is a third angle, 0°<third angle≤15°.

[0023] Furthermore, the connecting rod structure includes a jump hook and a lock hook which are respectively rotatably set on the main body bracket and snap-fitted, a first connecting rod, a second connecting rod, a transmission rod, and a transmission shaft; the first connecting rod is hinged to the jump hook and the second connecting rod respectively, one end of the main spring is connected to the rocker arm and the other end is connected to the hinge of the first connecting rod and the second connecting rod, the second connecting rod is also hinged to the transmission rod to drive it to rotate around the axis oo, the transmission shaft is set on the transmission rod and is spaced apart from the axis oo, and one end of the transmission shaft is connected to the rotating shaft for transmission.

[0024] Furthermore, the mechanism body also includes a re-buckle rotatably arranged on the body bracket, and the re-buckle is engaged with the lock buckle; the re-buckle is driven by an external force to rotate, releasing the buckle engagement with the lock buckle, and the buckle engagement between the lock buckle and the jump buckle is then released, causing the operating mechanism to jump.

[0025] The operating mechanism of the utility model has a main shaft that applies an opening auxiliary force to the rotating shaft through the opening assist structure, which can ensure that the rotating shaft successfully rotates to the opening position when the torque applied to the rotating shaft by the main spring through the connecting rod structure cannot rotate the rotating shaft to the opening position.

[0026] In addition, the brake-opening assist structure also serves as a transmission structure between the main shaft and the rocker arm, which helps to simplify the structure of the operating mechanism.

[0027] A switch electrical appliance comprises the operating mechanism.

[0028] Furthermore, the switch appliance includes a switch body, the switch body includes at least one set of switch units, the switch units and the operating mechanism are arranged side by side along the axis oo direction, and the rotating shaft and the moving contact mechanism of the switch unit are coaxially rotatably arranged and transmission-connected.

[0029] The switch electrical appliance of the utility model with the operating mechanism ensures successful opening and safe use of electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the switch electrical appliance of the utility model;

[0031] Figure 2This is a schematic diagram of the structure of the operating mechanism of the utility model. Figure 1 ;

[0032] Figure 3 This is a schematic diagram of the structure of the operating mechanism of the utility model. Figure 2 , showing the power-assisted turntable of the first implementation;

[0033] Figure 4 It is a cross-sectional projection view of the operating mechanism of the utility model;

[0034] Figure 5 This is a matching view of the transmission shaft of the utility model, the power-assisted turntable of the first implementation mode, and the rotating shaft;

[0035] Figure 6 It is a structural schematic diagram of the rotating shaft of the utility model;

[0036] Figure 7 This is an exploded view of the power-assisted turntable of the first implementation mode of the utility model;

[0037] Figure 8 This is a schematic diagram of the structure of the operating mechanism of the utility model. Figure 3 , showing the power-assisted turntable of the second implementation;

[0038] Fig. 9 This is a matching view of the transmission shaft of the utility model, the power-assisted turntable of the second implementation mode, and the rotating shaft;

[0039] Fig.10 It is a structural schematic diagram of a power-assisted turntable in a second implementation mode of the utility model.

[0040] Description of Reference Numerals

[0041] b switch body; c moving contact mechanism; o operating mechanism; h handle; o1 mechanism body; s body bracket, s1 upper side plate, s2 lower side plate, g11 transmission shaft guide hole; 1 main shaft; 2 transmission structure, 2-1 transmission disc, 2-2 transmission connecting rod; 3 opening brake assist structure, 3-1 assist turntable, 3-10 turntable body, 3-100 turntable mounting hole, 3-101 turntable socket, 3-102 turntable connecting hole, 3-11 assist part, 3-2 assist connecting rod; 4 rocker arm; 5 first connecting rod; 6 main spring; 7 jump buckle; 8 lock buckle; 9 re-buckle; 10 second connecting rod; 11 transmission shaft; 12 transmission rod; 13 rotating shaft, 13-0 rotating shaft socket, 13-1 rotating shaft arc groove, 13-2 rotating shaft stop surface; 14 opening brake block; 15 opening brake auxiliary spring. DETAILED DESCRIPTION

[0042] The following is a further description of the specific implementation of the switch device of the present utility model in conjunction with the embodiments given in the accompanying drawings. The switch device of the present utility model is not limited to the description of the following embodiments.

[0043] like Figure 1-10 The figure shows an embodiment of the switch device of the utility model. The switch device of the embodiment is preferably a transfer switch.

[0044] like Figure 1 As shown, the switch electrical appliance of this embodiment includes an operating mechanism o and a switch body b, the switch body b includes at least one set of switch units, the switch unit includes a contact system arranged therein, the contact system includes a rotating movable contact mechanism c and a static contact; the operating mechanism is connected to the movable contact mechanism c of each switch unit by transmission, and drives the movable contact mechanism c to rotate to close and disconnect with the corresponding static contact. Further, the movable contact mechanism c is arranged to rotate around the axis oo, and the operating mechanism and the switch unit of the switch body b are arranged side by side along the axis oo direction.

[0045] Specifically, Figure 1 As shown, the switch body b includes two or more switch units, each switch unit is stacked together along the axis oo, the moving contact mechanisms c of each switch unit are sequentially connected by transmission, and the operating mechanism o is connected by transmission to the moving contact mechanism c of the switch unit adjacent to the operating mechanism o.

[0046] As other embodiments, the operating mechanism o can also be connected to the moving contact mechanism c of each switch unit through a transmission connecting rod. For example, the transmission connecting rod passes through the contact support of each moving contact mechanism c in sequence and one end of the transmission connecting rod is connected to the rotating shaft 13 of the operating mechanism o.

[0047] like Figure 2-4 , 5 is an embodiment of the operating mechanism o.

[0048] The operating mechanism o of this embodiment includes a mechanism body o1 and a rotating shaft 13 for being connected to the moving contact mechanism c of the switch electrical appliance, the rotating shaft 13 is arranged to rotate around the axis oo and is located on one side of the mechanism body o1 in the direction of the axis oo, that is, the mechanism body o1 and the rotating shaft 13 are arranged side by side along the axis oo, the mechanism body o1 includes a body bracket s, a rocker arm 4 and a main shaft 1 arranged on the body bracket s to rotate around the axis o1-o1 and the axis oo respectively, a transmission structure 2 connected to the main shaft 1 and the rocker arm 4 respectively (that is, the main shaft 1 is connected to the rocker arm 4 through the transmission structure 2, thereby driving the rocker arm 4 to rotate around the axis o1-o1), a connecting rod structure arranged on the body bracket s and connected to the rotating shaft 13, and two ends thereof. A main spring 6 connected to the rocker arm 4 and the connecting rod structure and used for providing the driving force for opening and closing the switch; the axis oo is arranged parallel to the axis o1-o1 and spaced apart; when the operating mechanism o is opening or closing, the main shaft 1 is driven to rotate by an external force, and the main shaft 1 drives the rocker arm 4 to rotate at least through the transmission structure 2. The rocker arm 4 first drives the main spring 6 to move to the maximum energy storage position. At this time, the main spring 6 stores energy to the maximum value and the position of the rocker arm 4 is the critical position. The rocker arm 4 continues to rotate and drives the main spring 6 to pass the maximum energy storage position to release the energy of the main spring 6. The main spring 6 drives the rotating shaft 13 to rotate to the opening position through the connecting rod structure. The rotating shaft 13 drives the moving contact mechanism c of the switch unit to rotate to open or close each switch unit, that is, to open or close the switch electrical appliance. Furthermore, when the operating mechanism o is opened or closed, after the rocker arm 4 drives the main spring 6 to move to the maximum energy storage position, the rocker arm 4 continues to rotate past the first angle (that is, the rocker arm 4 drives the main spring 6 to pass the maximum energy storage position), and the main spring 6 starts to release energy and drives the rotating shaft 13 to rotate toward the opening position through the connecting rod structure; preferably, 0°<first angle≤30°. Furthermore, the first angle is 5°.

[0049] Further, such as Figure 1 As shown, the operating mechanism o of this embodiment further includes a handle h, which is connected to the main shaft 1, and the external force drives the main shaft 1 to rotate through the handle h. Further, the handle h and the rotating shaft 13 are respectively located on both sides of the mechanism body o1, that is, respectively located on both sides of the body bracket s.

[0050] Further, such as Figure 2-4As shown in , 8, the connecting rod structure includes a jump catch 7 and a lock catch 8 which are respectively rotatably set on the main body bracket s and snap-fitted, a first connecting rod 5, a second connecting rod 10, a transmission rod 12, and a transmission shaft 11; the first connecting rod 5 is hinged to the jump catch 7 and the second connecting rod 10 respectively, one end of the main spring 6 is connected to the rocker arm 4 and the other end is connected to the hinge of the first connecting rod 5 and the second connecting rod 10, the second connecting rod 10 is also hinged to the transmission rod 12 to drive it to rotate around the axis oo, the transmission shaft 11 is set on the transmission rod 12 and is parallel to the axis oo and spaced apart, one end of the transmission shaft 11 is connected to the rotating shaft 13 for transmission, the transmission shaft 11 makes a circular motion around the axis oo and drives the rotating shaft 13 to rotate around the axis oo. Furthermore, one end of the jump buckle 7 is rotatably set on the main body bracket s and the other end is snap-fitted with the lock buckle 8, one end of the first connecting rod 5 is hinged to the middle part of the jump buckle 7 and the other end is hinged to one end of the second connecting rod 10, the other end of the second connecting rod 10 is hinged to one end of the transmission rod 12, the middle part of the transmission rod 12 is rotatably set around the axis oo, and the other end of the transmission rod 12 is provided with a transmission shaft 11; one end of the main spring 6 connected to the rocker arm 4 and one end of the main spring 6 connected to the hinge of the first connecting rod 5 and the second connecting rod 10 are respectively located on both sides of the jump buckle 7; when the main spring 6 is at the maximum energy storage position, the hinge of the first connecting rod 5 and the second connecting rod 10 is located on the geometric axis of the main spring 6.

[0051] Further, such as Figure 2-4 As shown in , 8, the mechanism body o1 also includes a re-buckle 9 rotatably arranged on the body bracket s, and the re-buckle 9 is snap-fitted with the lock buckle 8; the re-buckle 9 is driven by an external force to rotate, and the snap-fitting with the lock buckle 8 is released, and the snap-fitting of the lock buckle 8 and the jump buckle 7 is then released, causing the operating mechanism o to jump. It should be pointed out that the external force driving the re-buckle 9 to rotate can come from a short-circuit protection mechanism, an overload protection mechanism, or a flux releaser for realizing remote opening control. The short-circuit protection mechanism is an electromagnetic actuator, and the overload protection mechanism includes a bimetallic strip. The short-circuit protection mechanism and the overload protection mechanism can be set separately, or they can be set as an integrated thermal magnetic protection mechanism, which can be realized by the existing technology. During the opening, closing, tripping and re-buckle process of the operating mechanism o, the action principle of the mechanism body o1 and the rotating shaft 13 is the same as that of the existing technology, and will not be described in detail here.

[0052] Further, such as Figure 2 As shown, the transmission structure 2 includes a transmission disc 2-1 and a transmission connecting rod 2-2. The transmission disc 2-1 is arranged on the main shaft 1 and rotates coaxially therewith. The transmission disc 2-1 is transmission-connected with the transmission connecting rod 2-2, and the transmission connecting rod 2-2 is transmission-connected with the rocker arm 4. Specifically, one end of the transmission connecting rod 2-2 is hinged to the transmission disc 2-1 and the other end is hinged to the rocker arm leg of the rocker arm 4. The main shaft 1 is driven to rotate by an external force, driving the transmission disc 2-1 to rotate, and the transmission disc 2-1 drives the rocker arm 4 to rotate through the transmission connecting rod 2-2.

[0053] Further, such as Figure 1-4 As shown in , 8, the main body bracket s includes two bracket side plates arranged relatively at intervals, namely, the upper side plate s1 and the lower side plate s2; the connecting rod structure, the main spring 6, and the buckle 9 are all arranged between the upper side plate s1 and the lower side plate s2. Further, the upper side plate s1 and the lower side plate s2 are both provided with a transmission shaft guide hole g11, and the transmission shaft 11 is inserted into the transmission shaft guide hole g11, and the shape of the transmission shaft guide hole g11 matches the moving trajectory of the transmission shaft 11.

[0054] Further, the rocker arm 4 is a U-shaped structure, which includes a rocker arm crossbeam and a rocker arm leg, the two rocker arm legs are arranged opposite to each other and are respectively connected to the rocker arm crossbeam by bending, and the rocker arm 4 is rotatably arranged on the upper side plate s1 and the lower side plate s2 through the two rocker arm legs; one end of the main spring 6 is connected to the rocker arm crossbeam and the other end is connected to the hinge of the first connecting rod 5 and the second connecting rod 10. Further, the two rocker arm legs are respectively located on both sides of the upper side plate s1 and the lower side plate s2.

[0055] like Figure 3 , 5 -10, the operating mechanism o also includes a brake-opening assisting structure 3 which is directly or indirectly coupled to the main shaft 1, and the brake-opening assisting structure 3 includes an assisting portion 3-11 which performs circular motion around the axis oo. That is, when the main shaft 1 is driven by an external force to rotate around the axis oo, the brake-opening assisting structure 3 is simultaneously driven to move so that the assisting portion 3-11 performs circular motion around the axis oo. In simple terms, when the main shaft 1 is driven by an external force to rotate, the assisting portion 3-11 is simultaneously driven to perform circular motion around the axis oo.

[0056] The following is a first matching mode between the brake-opening assist structure 3 and the rotating shaft 13:

[0057] When the operating mechanism o is opened, the main shaft 1 is subjected to external force to drive the rocker arm 4 to rotate. After the rocker arm 4 drives the main spring 6 to move to the maximum energy storage position, the main shaft 1 continues to rotate and drives the main spring 6 to cross the maximum energy storage position through the rocker arm 4. The main spring 6 starts to release energy and drives the rotating shaft 13 to rotate toward the opening position through the connecting rod structure; the booster 3-11 starts to apply the opening auxiliary force to the rotating shaft 13 to rotate it toward the opening position before the main spring 6 starts to release energy. The "boosting part 3-11 applies the opening auxiliary force to the rotating shaft 13 to rotate it toward the opening position before the main spring 6 starts to release energy" means that the moment when the booster 3-11 applies the opening auxiliary force to the rotating shaft 13 is before the moment when the main spring 6 starts to release energy. That is, before the main spring 6 starts to release energy, the opening auxiliary force structure 3 is driven by the main shaft 1, and applies the opening auxiliary force to the rotating shaft 13 to rotate it toward the opening position through the booster 3-11. It should be pointed out that before the main spring 6 starts to release energy, the angle at which the assisting part 3-11 drives the rotating shaft 13 to rotate will not disconnect the moving contact mechanism c from the static contact. Furthermore, when the assisting part 3-11 starts to apply the opening auxiliary force to the rotating shaft 13, the angle between the position of the rocker arm 4 and the position of the rocker arm 4 when the main spring 6 starts to release energy is the third angle, 0°<third angle≤15°; that is, when the operating mechanism opens, when the rocker arm 4 still needs to rotate past the third angle to drive the main spring 6 to pass the maximum energy storage position, the assisting part 3-11 starts to apply the opening auxiliary force to the rotating shaft 13.

[0058] The above-mentioned cooperation between the opening assist structure 3 and the rotating shaft 13 enables the opening assist structure 3 to drive the moving contact mechanism c to its opening position through the rotating shaft 13 to perform a pre-action before the main spring 6 starts to release energy, thereby reducing the resistance applied by the moving contact mechanism c to the rotating shaft 13 when the main spring 6 releases energy to drive the rotating shaft 13 to rotate, thereby ensuring a successful opening operation.

[0059] The following is a second matching mode between the gate opening assist structure 3 and the rotating shaft 13:

[0060] When the operating mechanism o is opened, the main shaft 1 is subjected to external force to drive the rocker arm 4 to rotate. After the rocker arm 4 drives the main spring 6 to move to the maximum energy storage position, the main shaft 1 continues to rotate and drives the main spring 6 to cross the maximum energy storage position through the rocker arm 4. The main spring 6 starts to release energy and drives the rotating shaft 13 to rotate toward the opening position through the connecting rod structure; the power-assisting part 3-11 applies a power-off auxiliary force to the rotating shaft 13 to rotate it toward the opening position when or after the main spring 6 starts to release energy; the "power-assisting part 3-11 applies a power-off auxiliary force to the rotating shaft 13 to rotate it toward the opening position when the main spring 6 starts to release energy" means that the moment when the power-assisting part 3-11 applies the power-off auxiliary force to the rotating shaft 13 to rotate it toward the opening position is the same as the moment when the main spring 6 starts to release energy; the "power-assisting part 3-11 applies the power-off auxiliary force to the rotating shaft 13 to rotate it toward the opening position after the main spring 6 starts to release energy" means that the moment when the power-assisting part 3-11 applies the power-off auxiliary force to the rotating shaft 13 to rotate it toward the opening position is after the moment when the main spring 6 starts to release energy. That is, when the main shaft 1 is subjected to external force and drives the operating mechanism o to open the gate, the main shaft 1 is subjected to external force and rotates, the main shaft 1 drives the rocker arm 4 to rotate, and when the rocker arm 4 drives the main spring 6 to move to the maximum energy storage position, the position of the rocker arm 4 is the critical position: after the rocker arm 4 continues to rotate past the first angle from the critical position, the main spring 6 begins to release energy and drives the rotating shaft 13 to rotate toward the opening position through the connecting rod structure; after the rocker arm 4 continues to rotate past the second angle from the critical position, the power assisting part 3-11 begins to apply the opening auxiliary force to the rotating shaft 13; when the first angle is less than or equal to the second angle and the first angle is equal to or equal to the second angle, the power assisting part 3-11 begins to apply the opening auxiliary force to the rotating shaft 13 when the main spring 6 begins to release energy, and when the first angle is less than or equal to the second angle, the power assisting part 3-11 begins to apply the opening auxiliary force to the rotating shaft 13 after the main spring 6 begins to release energy. The first angle is less than or equal to the second angle, which ensures that the opening auxiliary structure 3 will not act on the rotating shaft 13 before the main spring 6 begins to release energy.

[0061] Specifically, when the main shaft 1 is driven by an external force to drive the operating mechanism o to open the gate, the main shaft 1 is driven by the external force to rotate, and the main shaft 1 drives the rocker arm 4 to rotate. After the rocker arm 4 drives the main spring 6 to move to the maximum energy storage position, the rocker arm 4 continues to rotate and drives the main spring 6 to pass the maximum energy storage position. The main spring 6 starts to release energy, and the following two situations will occur later:

[0062] In case one, if the torque output to the rotating shaft 13 through the connecting rod structure by the main spring 6 releasing energy is greater than the torque applied to the rotating shaft 13 by the switch body b of the switching electrical appliance (for example, the moving contact and the static contact in the contact system of the switch unit of the switch body b are plugged together, then the force of the torque mainly comes from the friction between the static contacts), then the main spring 6 can drive the rotating shaft 13 to rotate to the opening position so that the switching electrical appliance can be opened normally.

[0063] Case 2: When the operating mechanism is opened, if the moving contact and the static contact in the contact system of the switch body b are welded or the friction force increases abnormally, the torque applied by the switch body b to the rotating shaft 13 is greater than the torque applied by the main spring 6 to the rotating shaft 13 through the connecting rod structure, that is, the energy released by the main spring 6 cannot drive the rotating shaft 13 to rotate or cannot rotate to the opening position (that is, the main spring 6 can drive the rotating shaft 13 to rotate a certain angle to the opening position but stops rotating during the rotation to the opening position, and the main spring 6 cannot Continue to drive the rotating shaft 13 to rotate), at this time the main spring 6 cannot rotate the rotating shaft 13 to the opening position and cannot open the switch. At this time, the external force can drive the main shaft 1 to continue to rotate, and the main shaft 1 drives the opening assisting structure 3 to operate. The opening assisting structure 3 applies an opening auxiliary force to the rotating shaft 13 through the assisting part 3-11, so that the rotating shaft 13 can rotate to the opening position under the joint action of the main spring 6 and the opening assisting structure 3, and then the switch is opened, thereby avoiding the failure of the opening operation of the operating mechanism o and ensuring the safety of electricity use. That is, the opening assisting structure is used to ensure that the operating mechanism can reliably complete the opening operation under the second situation.

[0064] Furthermore, 0°<first angle ≤30°. In the present embodiment, the first angle is preferably 5°, which can prevent the main spring 6 from losing too much energy before driving the rotating shaft 13 to rotate through the connecting rod structure, and can also improve the energy release efficiency of the main spring 6 so that the rotating shaft 13 obtains a larger initial acceleration, thereby avoiding the occurrence of arcs or reducing the probability of arcs.

[0065] Furthermore, 0°<second angle≤30°. Furthermore, 5°≤second angle≤25°, which reserves enough space for the main spring 6 to release energy, so that the main spring 6 can play a role in the opening process of the operating mechanism to the greatest extent.

[0066] Further, such as Figure 3 and 8 As shown, the main shaft 1 is directly connected to the gate-opening assisting structure 3 by transmission. Further, the gate-opening assisting structure 3 includes an assisting turntable 3-1, and the assisting turntable 3-1 includes a turntable body 3-10 that is arranged to rotate around the axis oo and an assisting part 3-11 arranged on the turntable body 3-10, that is, the turntable body 3-10 is arranged to rotate coaxially with the main shaft 1 and the rotating shaft 13, and the assisting part 3-11 is arranged on one side of the rotation center of the turntable body 3-10, and performs circular motion around the axis oo, and the turntable body 3-10 is directly connected to the main shaft 1 by transmission. Further, the turntable body 3-10 is arranged on the main shaft 1 and rotates synchronously with the main shaft 1. Further, the gate-opening assisting structure 3 is arranged between the main body bracket s and the rotating shaft 13.

[0067] Further, if Figure 3 and 8As shown, the gate-opening assisting structure 3 also includes an assisting connecting rod 3-2, which is respectively connected to the turntable body 3-10 and the rocker arm 4 by transmission, and the main shaft 1 can drive the rocker arm 4 to rotate through the assisting turntable 3-1 and the assisting connecting rod 3-2 in turn, that is, the assisting turntable 3-1 and the assisting connecting rod 3-2 cooperate to be equivalent to another set of transmission structures 2. Further, the two ends of the assisting connecting rod 3-2 are respectively hinged to the turntable body 3-10 and the rocker arm 4. Specifically, the main shaft 1 is connected to one rocker arm leg of the rocker arm 4 by transmission structure 2, and is connected to the other rocker arm leg of the rocker arm 4 by the gate-opening assisting structure 3, that is, the main shaft 1 drives the rocker arm 4 to rotate through the transmission structure 2 and the gate-opening assisting structure 3 at the same time; the transmission structure 2 and the gate-opening assisting structure 3 are respectively located on both sides of the main body bracket s (that is, the transmission structure 2 and the gate-opening assisting structure 3 are respectively located on both sides of the upper side plate s and the lower side plate s2), and the gate-opening assisting structure 3 is located between the main body bracket s and the rotating shaft 13. The above structural design is conducive to simplifying the structure of the operating mechanism o and ensuring the transmission reliability and efficiency between the main shaft 1 and the rocker arm 4.

[0068] As another embodiment, the mechanism body o1 is provided with two sets of transmission structures 2, and the two sets of transmission structures 2 are respectively arranged on both sides of the upper side plate s1 and the lower side plate s2; the gate-opening assisting structure 3 is a structure independently arranged from the two sets of transmission structures 2, and the gate-opening assisting structure 3 does not need to be provided with an assisting connecting rod 3-2.

[0069] like Figure 3 and 7 As shown, it is the first implementation of the power-assisted turntable 3-1: the turntable body 3-10 and the power-assisted part 3-11 are split structures, and the power-assisted part 3-11 is a shaft rod connected to the turntable body 3-10 at one end. Further, the turntable body 3-10 includes a turntable mounting hole 3-100 and a turntable plug hole 3-101, and the turntable body 3-10 is sleeved on the main shaft 1 through the turntable mounting hole 3-100. The turntable mounting hole 3-100 is provided with a mounting hole limiting surface, and the main shaft 1 is provided with a main shaft limiting surface. The mounting hole limiting surface and the main shaft limiting surface cooperate to realize the synchronous rotation of the turntable body 3-10 and the main shaft 1, and one end of the power-assisted part 3-11 is inserted into the turntable plug hole 3-101. Further, the turntable body 3-10 also includes a turntable connecting hole 3-102, and the turntable body 3-10 is hinged to the power-assisted connecting rod 3-2 through the turntable connecting hole 3-102. Furthermore, the turntable mounting hole 3-100, the turntable insertion hole 3-101 and the turntable connecting hole 3-102 are distributed at the three vertices of a triangle.

[0070] like Figure 8 and 10As shown, it is a second implementation method of the power-assisted turntable 3-1: the turntable body 3-10 and the power-assisted part 3-11 are an integrated structure, and one end of the power-assisted part 3-11 is connected to the edge of the turntable body 3-10 by bending. Further, the turntable body 3-10 includes a turntable mounting hole 3-100, and the turntable body 3-10 is sleeved on the main shaft 1 through the turntable mounting hole 3-100, and the turntable mounting hole 3-100 is provided with a mounting hole limiting surface, and the main shaft 1 is provided with a main shaft limiting surface, and the mounting hole limiting surface and the main shaft limiting surface cooperate to realize the synchronous rotation of the turntable body 3-10 and the main shaft 1. Further, the turntable body 3-10 and the power-assisted part 3-11 are formed by punching and bending metal sheets, or the turntable body 3-10 and the power-assisted part 3-11 are an integrated injection molded part, and the injection molded part can be made of metal or high-strength non-metallic material. Further, the turntable body 3-10 also includes a turntable connection hole 3-102, and the turntable body 3-10 is hinged to the power-assisting connecting rod 3-2 through the turntable connection hole 3-102. Further, the turntable mounting hole 3-100, the turntable connection hole 3-102 and the power-assisting part 3-12 are arranged at the three vertices of a triangle.

[0071] As other embodiments, the brake-opening assist structure 3 is indirectly coupled with the main shaft 1 in transmission. For example, the turntable body 3-10 of the assist turntable 3-1 is rotatably arranged on the main body bracket s around the axis oo, and the rocker arm 4 drives the assist turntable 3-1 to rotate through the assist link 3-2, thereby causing the assist part 3-11 to act on the rotating shaft 13.

[0072] As other embodiments, the main shaft 1 is not directly connected to the gate-opening assisting structure 3 by transmission, but starts to contact the gate-opening assisting structure 3 and drives the gate-opening assisting structure 3 to move after the main shaft 1 drives the rocker arm 4 to rotate through the second angle; for example, the main shaft 1 is provided with a rocker arm driving part, and the power-assisting turntable 3-1 is provided with a matching part. After the main shaft 1 drives the rocker arm 4 to rotate through the second angle, the rocker arm driving part and the matching part are abutted against each other, thereby driving the power-assisting turntable 3-1 to rotate, and the power-assisting turntable 3-1 then drives the assisting part 3-11 to make a circular motion around the axis oo.

[0073] Further, such as Figure 5-6 As shown in , 9, the rotating shaft 13 includes a rotating shaft matching portion; when the operating mechanism o is opened, the assisting portion 3-11 abuts against the rotating shaft matching portion when or after the main spring 6 starts to release energy.

[0074] Specifically, the rotating shaft 13 includes a rotating shaft arc groove 13-1 arranged on the side thereof facing the mechanism body o1, and one end of the power-assisting part 3-11 is inserted in the rotating shaft arc groove 13-1. The power-assisting part 3-11 can make circular motion in the rotating shaft arc groove 13-1 under the drive of the main shaft 1. One end of the rotating shaft arc groove 13-1 is provided with a rotating shaft stop surface 13-2 serving as a rotating shaft matching part. That is, when the operating mechanism o is opened, the main shaft 1 drives the rocker arm 4 to continue to rotate from the critical position to the second angle, and at the same time, the main shaft 1 drives the power-assisting part 3-11 to abut against the rotating shaft stop surface 13-2.

[0075] As another embodiment, the shaft mating portion may also be a stopper provided on the side of the shaft 13 facing the mechanism body o1. The shape of the stopper is not specifically limited as long as it can be reliably mated with the assisting portion 3-11.

[0076] like Figure 6 As shown, an embodiment of the rotating shaft 13 is shown: the rotating shaft 13 is a disc-shaped structure, which includes a rotating shaft insertion hole 13-0 and a rotating shaft arc groove 13-1. The rotating shaft insertion hole 13-0 is used for inserting the transmission shaft 11 of the mechanism body o1, and the distance between the rotating shaft insertion hole 13-0 and the rotation center of the rotating shaft 13 (that is, the axis oo) is greater than the distance between the rotating shaft arc groove 13-1 and the rotation center of the rotating shaft 13. Furthermore, the side of the rotating shaft 13 away from the mechanism body o1, that is, the side facing the switch body, is provided with a rotating shaft transmission part for transmission cooperation with the moving contact mechanism c.

[0077] Further, such as Figure 4 As shown, the mechanism body o1 also includes a trip block 14, which is arranged on the body bracket s. When the operating mechanism o is tripped, the transmission rod 12 rotates to the trip position (the transmission rod 12 simultaneously drives the rotating shaft 13 to rotate to the trip position through the transmission shaft 11) and abuts against the trip block 14 to prevent the transmission rod 12 from continuing to rotate.

[0078] Further, such as Figure 2-4 As shown in Figure 8, the mechanism body o1 also includes an opening auxiliary spring 15, and the trip latch 7 is also provided with a trip latch hanging spring part. The trip latch hanging spring part and one end of the trip latch 7 that is snap-fitted with the lock latch 8 (the end is the trip latch buckle end) are respectively located at the two ends of the trip latch 7, and the rotation center of the trip latch 7 is located between the trip latch hanging spring part and the trip latch buckle end. One end of the opening auxiliary spring 15 is connected to the trip latch hanging spring part and the other end is connected to the body bracket s, and a force is applied to the trip latch 7 to rotate it toward the tripping position. The trip latch 7 drives the rotating shaft 13 to rotate toward the opening position through the first connecting rod 5, the second connecting rod 10, the transmission rod 12 and the transmission shaft 11 that are connected in sequence. The opening auxiliary spring 15 is beneficial to accelerating the speed at which the rotating shaft 13 rotates to the opening position, thereby improving the opening efficiency.

[0079] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0080] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An operating mechanism, comprising a mechanism body (o1) and a rotating shaft (13) for being connected to a moving contact mechanism (c) of a switch, the rotating shaft (13) being arranged to rotate around an axis oo and being located on one side of the mechanism body (o1) in the direction of the axis oo, the mechanism body (o1) comprising a body bracket (s), a rocker arm (4) and a main shaft (1) arranged on the body bracket (s) to rotate around the axis o1-o1 and the axis oo respectively, a transmission structure (2) connected to the main shaft (1) and the rocker arm (4) respectively, a connecting rod structure arranged on the body bracket (s) and connected to the rotating shaft (13), and a main spring (6) having two ends respectively connected to the rocker arm (4) and the connecting rod structure and used to provide a driving force for opening and closing the switch; the axis oo is arranged parallel to the axis o1-o1 and spaced apart; it is characterized in that: The operating mechanism also includes a brake-opening assisting structure (3) that is directly or indirectly coupled to the main shaft (1), and the brake-opening assisting structure (3) includes an assisting portion (3-11) that performs circular motion around the axis oo; When the operating mechanism is in the opening state, the main shaft (1) is driven by an external force to rotate, the rotating shaft (13) drives the rocker arm (4) to rotate through the transmission structure (2), and after the rocker arm (4) drives the main spring (6) to move to the maximum energy storage position, the main shaft (1) continues to rotate and drives the main spring (6) through the rocker arm (4) to pass the maximum energy storage position, the main spring (6) starts to release energy and drives the rotating shaft (13) to rotate toward the opening position through the connecting rod structure; before, when or after the main spring (6) starts to release energy, the assisting part (3-11) applies an opening auxiliary force to the rotating shaft (13) to rotate it toward the opening position.

2. The operating mechanism according to claim 1, characterized in that: The gate opening assist structure (3) comprises an assist turntable (3-1), the assist turntable (3-1) comprising a turntable body (3-10) rotatably arranged around an axis line oo and an assist portion (3-11) arranged on the turntable body (3-10), the turntable body (3-10) being directly or indirectly coupled with the main shaft (1) in transmission.

3. The operating mechanism according to claim 2, characterized in that: The turntable body (3-10) is arranged on the main shaft (1) and rotates synchronously with the main shaft (1).

4. The operating mechanism according to claim 3, characterized in that: The gate-opening assist structure (3) further comprises an assist link (3-2), which is respectively connected to the turntable body (3-10) and the rocker arm (4) by transmission; the main shaft (1) drives the rocker arm (4) to rotate through the gate-opening assist structure (3) and the transmission structure (2) at the same time.

5. The operating mechanism according to claim 4, characterized in that: The transmission structure (2) and the gate-opening assisting structure (3) are respectively arranged on both sides of the main body bracket (s), and the gate-opening assisting structure (3) is located between the main body bracket (s) and the rotating shaft (13).

6. The operating mechanism according to claim 4, characterized in that: The turntable body (3-10) and the assisting part (3-11) are of split structure, the assisting part (3-11) is a shaft rod connected to the turntable body (3-10) at one end; the turntable body (3-10) comprises a turntable mounting hole (3-100), a turntable insertion hole (3-101) and a turntable connecting hole (3-102); the turntable body (3-10) is sleeved on the main shaft (1) through the turntable mounting hole (3-100), the shaft rod is inserted into the turntable insertion hole (3-101), and the turntable body (3-10) is hinged to the assisting connecting rod (3-2) through the turntable connecting hole (3-102).

7. The operating mechanism according to claim 4, characterized in that: The turntable body (3-10) and the power-assisting part (3-11) are an integrated structure, and one end of the power-assisting part (3-11) is connected to the edge of the turntable body (3-10) by bending; the turntable body (3-10) comprises a turntable mounting hole (3-100) and a turntable connecting hole (3-102); the turntable body (3-10) is sleeved on the main shaft (1) through the turntable mounting hole (3-100); and the turntable body (3-10) is hinged to the power-assisting connecting rod (3-2) through the turntable connecting hole (3-102).

8. The operating mechanism according to claim 2, characterized in that: The brake opening assist structure (3) is arranged between the main body bracket (s) and the rotating shaft (13).

9. The operating mechanism according to claim 1, characterized in that: The rotating shaft (13) comprises a rotating shaft matching portion; when the operating mechanism opens the gate, the assisting portion (3-11) abuts against the rotating shaft matching portion before, when or after the main spring (6) starts to release energy.

10. The operating mechanism according to claim 9, characterized in that: The rotating shaft (13) comprises a rotating shaft arc groove (13-1) arranged on the side thereof facing the mechanism body (o1), one end of the assisting part (3-11) is inserted into the rotating shaft arc groove (13-1), and one end of the rotating shaft arc groove (13-1) is provided with a rotating shaft stop surface (13-2) serving as a rotating shaft matching part.

11. The operating mechanism according to claim 1, characterized in that: When the operating mechanism is in the open position, the rocker arm (4) drives the main spring (6) to move to the maximum energy storage position, and the position of the rocker arm (4) is the critical position; After the rocker arm (4) continues to rotate past a first angle from the critical position, the main spring (6) begins to release energy and drives the rotating shaft (13) to rotate toward the opening position through the connecting rod structure.

12. The operating mechanism according to claim 11, characterized in that: When the operating mechanism opens the gate, after the rocker arm (4) continues to rotate from the critical position to a second angle, the assisting portion (3-11) begins to apply an auxiliary force for opening the gate to the rotating shaft (13); the first angle ≤ the second angle.

13. The operating mechanism according to claim 12, characterized in that: 5°≤second angle≤25°.

14. The operating mechanism according to claim 12, characterized in that: 0°<first angle≤30°.

15. The operating mechanism according to claim 14, characterized in that: The first angle is 5°.

16. The operating mechanism according to claim 11, characterized in that: When the operating mechanism is opened, the assisting portion (3-11) applies an auxiliary opening force to the rotating shaft (13) to rotate it toward the opening position before the main spring (6) starts to release energy; when the assisting portion (3-11) starts to apply the auxiliary opening force to the rotating shaft (13), the angle between the position of the rocker arm (4) and the position of the rocker arm (4) when the main spring (6) starts to release energy is a third angle, and 0°<third angle≤15°.

17. The operating mechanism according to claim 1, characterized in that: The connecting rod structure includes a jump catch (7) and a lock catch (8) which are respectively rotatably arranged on the main body bracket (s) and snap-fitted, a first connecting rod (5), a second connecting rod (10), a transmission rod (12), and a transmission shaft (11); the first connecting rod (5) is hinged to the jump catch (7) and the second connecting rod (10) respectively, one end of the main spring (6) is connected to the rocker arm (4) and the other end is connected to the hinge between the first connecting rod (5) and the second connecting rod (10), the second connecting rod (10) is also hinged to the transmission rod (12) to drive it to rotate around the axis oo, the transmission shaft (11) is arranged on the transmission rod (12) and is spaced apart from and parallel to the axis oo, and one end of the transmission shaft (11) is connected to the rotating shaft (13) for transmission.

18. The operating mechanism according to claim 17, characterized in that: The mechanism body (o1) also includes a re-buckle (9) rotatably arranged on the body bracket (s), and the re-buckle (9) is snap-fitted with the lock buckle (8); the re-buckle (9) is driven by an external force to rotate, thereby releasing the snap-fitting with the lock buckle (8), and the snap-fitting of the lock buckle (8) and the jump buckle (7) is then released, causing the operating mechanism to jump.

19. A switch electrical device, characterized in that: The switching device comprises the operating mechanism described in any one of claims 1-18.

20. The switch device according to claim 19, characterized in that: The switch appliance comprises a switch body (b), the switch body (b) comprises at least one set of switch units, the switch units and the operating mechanism (o) are arranged side by side along the axis oo direction, and the rotating shaft (13) and the moving contact mechanism (c) of the switch unit are coaxially rotatably arranged and transmission-connected.

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