Closing unloading structure and rotary isolating switch

Abstract

The closing force unloading structure comprises a rotating disc which is used for being in transmission connection with the moving contact mechanism, the rotating disc is rotationally arranged and can rotate between an opening position and a closing position, the closing force unloading structure further comprises an elastic piece, the elastic piece is provided with a counter-force part, and the rotating disc is provided with an acting surface matched with the counter-force part; in the process that the rotating disc rotates from the opening position to the closing position, the counter-force part applies closing unloading force enabling the rotating disc to rotate towards the opening position to the acting surface, and when the rotating disc is located at the closing position, the acting surface is separated from the counter-force part. The rotary isolating switch comprises the closing force unloading structure. According to the switching-on unloading structure and the rotary disconnecting switch, the switching-on unloading force for rotating the turntable towards the switching-off position is applied through the counter-force part of the elastic piece in the switching-on process, so that a part of switching-on driving force output to the turntable by an operating mechanism is shared, and the phenomenon that a moving contact rotates to pass through the switching-on position and then rebounds after the switch is switched on is avoided or weakened; and the switching-on reliability of the switch is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a closing force unloading structure and a rotary disconnector. BACKGROUND

[0002] The rotary disconnector comprises an operating mechanism and a plurality of switch bodies arranged in layers, the operating mechanism is in transmission connection with the movable contact mechanism of the adjacent switch body, and the movable contact mechanisms of the adjacent switch bodies are in turn in transmission connection. Most rotary disconnectors adopt plug-in contact (blade contact) for the movable contact and the fixed contact. That is, the movable contact mechanism comprises a contact shaft and two movable contact blades arranged in pairs on the contact shaft. When the movable contact rotates to the closed position, the movable contact holds the fixed contact in a blade shape. The friction between the movable contact and the fixed contact is relatively small (i.e., the torque of the switch body is small), which is beneficial to the opening of the switch by the operating mechanism. However, due to inertia, after the operating mechanism rotates to the closed position, the movable contact of the switch body will slightly rotate beyond the closed position and then rebound to the closed position, which will cause over-rebound. The movable contact mechanism rebounds beyond the closed position. In particular, the farther the switch body is from the operating mechanism, the more the movable contact will rotate beyond the closed position, and the greater the rebound angle will be, resulting in unreliable closing of the switch. SUMMARY

[0003] The present application aims to overcome at least one of the disadvantages of the prior art and provide a closing force unloading structure and a rotary disconnector.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The closing force unloading structure comprises a rotating disc for transmission connection with the movable contact mechanism. The rotating disc is arranged to rotate and can rotate between the open position and the closed position. The closing force unloading structure further comprises a resilient member provided with a counterforce part. The rotating disc is provided with an acting surface matched with the counterforce part. During the rotation of the rotating disc from the open position to the closed position, the counterforce part applies a closing force unloading force to the acting surface to rotate the rotating disc to the open position. When the rotating disc is in the closed position, the acting surface is separated from the counterforce part.

[0006] Optionally, during the rotation of the rotating disc from the closed position to the open position, the counterforce part acts on the acting surface of the rotating disc to apply a closing force unloading force to rotate the rotating disc to the open position.

[0007] Optionally, the counterforce part comprises a matching surface for matching with the rotating disc, the rotating disc is provided with a rotating disc boss in the radial direction of the rotating disc, the rotating disc boss is provided with the acting surface, and the rotating disc boss is provided with a circumferential arc surface connected with the acting surface on the side of the rotating disc boss away from the rotating center of the rotating disc and close to the elastic member in the rotating direction of the rotating disc, and the matching surface of the elastic member is tangent to the circumferential arc surface when the rotating disc is in the closed position.

[0008] Optionally, when the matching surface first contacts the acting surface during the rotation of the rotating disc from the open position to the closed position, the matching surface is perpendicular to the rotating direction of the rotating disc.

[0009] Optionally, the rotating disc boss is provided with a boss gap in the rotating direction of the rotating disc to form the acting surface on one side of the boss gap in the rotating direction of the rotating disc and a rotating disc limiting part stacked with the boss gap in the axial direction of the rotating disc; when the rotating disc is in the open position, the counterforce part is located in the boss gap and is limited by the rotating disc limiting part.

[0010] Optionally, the acting surface is perpendicular to the radial surface of the rotating disc, and the counterforce part is arranged on the movement track of the acting surface during the rotation of the rotating disc from the open position to the closed position; when the rotating disc is in the open position, the counterforce part is arranged to be spaced apart from or in contact with the acting surface.

[0011] Optionally, the elastic member is mounted on the base between the first limiting surface and the second limiting surface of the base, the counterforce part of the elastic member is arranged opposite to the first limiting surface, the elastic member is provided with a fixed part for movement support of the counterforce part, and the fixed part abuts against the second limiting surface.

[0012] Optionally, the elastic member is a torsion spring, comprising a spring body, one end of the spring body extends outward in a first extension direction to form the counterforce part, the other end of the spring body extends outward in a second extension direction to form the fixed part, and the outer side of the counterforce part away from the fixed part is the matching surface for matching with the rotating disc.

[0013] Optionally, the first extension direction and the second extension direction are tangent directions of the spring body, and the first extension direction is perpendicular to the second extension direction.

[0014] Optionally, the counterforce part is a J-shaped structure with the end bent inward, and the fixed part is an L-shaped structure with the end bent along the axial direction of the spring body.

[0015] Optionally, the elastic member is a spring sheet, one end of the spring sheet is the counterforce part, the other end is the fixed part, and the outer side of the counterforce part away from the fixed part is the matching surface for matching with the rotating disc.

[0016] Optionally, the counterforce part and the fixed part are connected in an L shape.

[0017] The rotary disconnector comprises any of the closing force relieving structures.

[0018] Optionally, the rotary disconnector comprises a switch body and an operating mechanism arranged in a stacked manner, the switch body comprises a plurality of switch units, each of the switch units comprises a moving contact mechanism and a stationary contact, and the operating mechanism is in transmission connection with the moving contact mechanism of an adjacent switch unit through the rotating disc of the closing force relieving structure.

[0019] Optionally, the rotating disc is provided with a rotating disc rotating portion on a side facing the switch body, the rotating disc rotating portion is rotatably installed in a mounting hole of the base and in transmission connection with the moving contact mechanism of the switch body, and the rotating disc is provided with a transmission hole for inserting an output shaft of the operating mechanism and a rotating disc arc-shaped slot for cooperating with the opening assisting structure on a side facing the operating mechanism.

[0020] The opening assisting structure comprises a force assisting portion in circumferential motion along the rotating disc arc-shaped slot, one end of the force assisting portion of the opening assisting structure is inserted into the rotating disc arc-shaped slot, and the rotating disc arc-shaped slot is provided with a rotating disc stop surface at one end; when the operating mechanism is in opening, the force assisting portion abuts against the rotating disc stop surface before, at or after the main spring of the operating mechanism starts to release energy, and applies an opening auxiliary force to the rotating disc to make the rotating disc rotate to the opening position.

[0021] The closing force relieving structure and the rotary disconnector of the present application apply the closing force relieving force of the rotating disc rotating to the opening position by the counterforce portion of the elastic member during the closing process, to share a part of the closing driving force output by the operating mechanism to the rotating disc, to avoid or weaken the phenomenon that the moving contact rotates beyond the closing position and rebounds after the switch is closed, and to improve the reliability of the switch closing.

[0022] In addition, when the switch is in a stationary state after being closed, the elastic force direction of the elastic member is perpendicular to the rotating direction of the rotating disc, the elastic force of the rotating disc in the rotating direction is zero, the moving and stationary contacts of the switch body and the output shaft of the operating mechanism remain in a stationary state, the use performance of the switch is not affected, the reliability of the switch is improved, the elastic force direction of the elastic member is all applied in the radial direction of the rotating disc, the rotating disc is limited in the closing position, and the closing stability of the switch is improved.

[0023] In addition, the elastic member is energized by the rotating disc during the closing process, and the elastic member releases energy to apply the closing force relieving force of the rotating disc rotating to the opening position during the opening process, to accelerate the separation speed of the moving and stationary contacts, to improve the quick breaking capacity of the switch, and to reduce the burning of the moving and stationary contacts by the electric arc.

[0024] In addition, the elastic force of the elastic member applied to the rotating disc is all applied in the movement direction of the rotating disc, to improve the effective conversion rate of the elastic force of the elastic member, to increase the closing force relieving force received by the rotating disc, and to effectively prevent the rebound of the moving contact. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1is an exploded view of the rotary disconnector of the present application;

[0026] Figure 2 is a perspective view of the rotary disc, the switch body and the elastic member in the open position of the present application;

[0027] Figure 3 is a front view of the rotary disc, the switch body and the elastic member in the open position of the present application;

[0028] Figure 4 is a perspective view of the rotary disc, the switch body and the elastic member in the closing process of the present application;

[0029] Figure 5 is a sectional view of the rotary disc, the switch body and the elastic member in the closing process of the present application;

[0030] Figure 6 is a perspective view of the rotary disc, the switch body and the elastic member in the closed position of the present application;

[0031] Figure 7 is a sectional view of the rotary disc, the switch body and the elastic member in the closed position of the present application;

[0032] Figure 8 is a back perspective view of the rotary disc and the elastic member of embodiment one in the closing process of the present application;

[0033] Figure 9 is a back perspective view of the rotary disc and the elastic member of embodiment one in the closed position of the present application;

[0034] Figure 10 is a front perspective view of the rotary disc and the elastic member of embodiment one in the closed position of the present application;

[0035] Figure 11 is a front view of the rotary disc and the elastic member of embodiment one in the closed position of the present application;

[0036] Figure 12 is a back perspective view of the rotary disc and the elastic member of embodiment two in the closing process of the present application;

[0037] Figure 13 is a front perspective view of the rotary disc and the elastic member of embodiment two in the closing process of the present application;

[0038] Figure 14 is a front view of the rotary disc and the elastic member of embodiment two in the closing process of the present application;

[0039] Figure 15 is a back perspective view of the rotary disc and the elastic member of embodiment two in the closed position of the present application;

[0040] Figure 16 is a front perspective view of the rotary disc and the elastic member of embodiment two in the closed position of the present application;

[0041] Figure 17 is the front view of the rotating disc of the closing position of the application and the elastic member of embodiment two;

[0042] Figure 18 is a structural schematic view of the rotating disc of the application;

[0043] Figure 19 is a structural schematic view of the base of the application;

[0044] Figure 20 is a structural schematic view of the operating mechanism of the application;

[0045] Rotating disc 1; rotating disc boss 11; action surface 111; circumferential camber surface 112; boss notch 113; rotating disc limiting part 114; transmission hole 12; rotating disc arc-shaped slot 13; rotating disc blocking surface 131; rotating disc rotating part 14; elastic member 2; counterforce part 21; matching surface 211; fixing part 22; spring body 23; base 3; first limiting surface 31; second limiting surface 32; mounting shaft 33; mounting hole 34; switch body 4; switch unit 41; operating mechanism 5; output shaft 51; main shaft 52; rocker arm 53; main spring 54; opening and closing force assisting structure 6; assisting rotating disc 61; assisting rotating disc body 611; assisting part 612; assisting connecting rod 62. DETAILED DESCRIPTION

[0046] The following embodiments given in combination with the accompanying drawings further illustrate the specific implementation of the closing force relieving structure and the rotary disconnecting switch of the application. The closing force relieving structure and the rotary disconnecting switch of the application are not limited to the description of the following embodiments.

[0047] As shown in Figure 1 , the rotary disconnecting switch of the embodiment includes an operating mechanism 5 and a switch body 4 arranged in layers, the switch body 4 includes at least one group of switch units 41, the switch unit 41 includes a moving contact mechanism and a stationary contact, the operating mechanism 5 is connected in transmission with the moving contact mechanism of each switch unit 41 through a rotating disc 1, drives the moving contact mechanism to rotate to close and open the corresponding stationary contact, and realizes the closing and opening of the rotary disconnecting switch. Specifically, one end of the operating mechanism 5 is provided with a main shaft 52 for external force operation, the other end of the operating mechanism 5 is provided with an output shaft 51, the output shaft 51 is inserted into a transmission hole 12 of the rotating disc 1 to realize the hinging of the rotating disc 1, provides closing driving force and opening driving force for the rotating disc 1, the moving contact mechanism includes a contact rotating shaft and two moving contact pieces arranged in pairs and at intervals on the contact rotating shaft, the moving contact rotates to the closing position to hold the stationary contact in the shape of a sheet, and realizes the closing of the switch. The rotating disc 1 is rotatably arranged in a mounting hole 34 of a base 3 Figure 19), capable of rotating between an open position and a closed position. The rotary disk 1 is coaxially rotatable with the contact shaft of the movable contact mechanism of the switch unit 41 adjacent to the operating mechanism 5 and is transmission-connected. The movable contact mechanisms of each switch unit 41 are sequentially transmission-connected. In this embodiment, the rotary disk 1 and the contact shaft of the movable contact mechanism are separately provided and then connected. Obviously, the rotary disk 1 and the contact shaft of the movable contact mechanism can also be provided integrally. It should be noted that the operating principles of the operating mechanism 5 and the switch body 4 in this embodiment belong to the prior art and will not be described in detail here.

[0048] like Figures 2-7 The rotary disconnector of this embodiment further includes a closing force unloading structure, which includes an elastic member 2, wherein the elastic member 2 is provided with a reaction force portion 21, and the turntable 1 is provided with an action surface 111 that cooperates with the reaction force portion 21; during the process of the turntable 1 rotating from the opening position to the closing position, the reaction force portion 21 applies a closing force to the action surface 111 to rotate the turntable 1 toward the opening position, and when the turntable 1 is in the closing position, the action surface 111 is separated from the reaction force portion 21. Specifically, during the process of the turntable 1 rotating from the opening position to the closing position, as shown in FIG. Figures 2-3 As shown, the rotary disk 1 is driven by the closing driving force to rotate clockwise, so that the action surface 111 acts on the reaction force part 21 as shown in FIG. Figures 4-5 As shown, at the same time, the reaction force portion 21 acts in the opposite direction on the action surface 111 to apply the closing unloading force to rotate the turntable 1 toward the open position. The closing driving force is greater than the sum of the closing unloading force and the torque of the switch body 4, driving the turntable 1 to continue to rotate clockwise to the closed position. Figures 6-7 As shown, at this time, the action surface 111 is separated from the reaction force portion 21 and is no longer subject to the closing unloading force of the reaction force portion 21. That is, the force applied by the elastic member 2 on the rotary disk 1 does not cause the rotary disk 1 to rotate toward the open position. The closing unloading structure and rotary disconnector of this embodiment apply the closing unloading force of the rotary disk 1 toward the open position through the reaction force portion 21 of the elastic member 2 during the closing process, thereby sharing a portion of the closing driving force output by the operating mechanism 5 to the rotary disk 1. This avoids or reduces the phenomenon of the movable contact rotating past the closed position and then rebounding after the switch is closed, thereby improving the reliability of the switch closing.

[0049] In the rotary disconnector of this embodiment, the operating mechanism 5 is connected to the moving contact mechanism of the adjacent switch unit 41 through the turntable 1 of the closing unloading structure. The output shaft 51 of the operating mechanism 5 drives the turntable 1 to rotate, and the turntable 1 then drives the adjacent switch unit 41 to rotate to close and disconnect the moving contact and the corresponding static contact. It should be noted that the closing unloading structure is preferably arranged in the cavity between the operating mechanism 5 and the adjacent switch unit 41, and the operating mechanism 5 is stacked on the base 3 on the switch body 4 to surround and form the cavity. The closing unloading structure is suitable for switch units whose moving and static contacts are in plug-in contact (blade contact), and is also suitable for switch units with other contact methods. The elastic member 2 can beFigures 2-11 The torsion spring of embodiment 1, or Figures 12-18 The spring element of the second embodiment, or a plastic elastic arm, such as an elastic arm integrally formed and extending from the base 3, can be arranged at an angle, and can be in a straight line, curved, or wavy shape, etc. Of course, the elastic arm can also be provided independently. Obviously, the elastic member 2 can also be an elastic component of other structures, and those skilled in the art can adjust it as needed.

[0050] like Figures 8-17 As shown, the reaction force portion 21 of the elastic member 2 includes a mating surface 211 for mating with the turntable boss 11. The turntable 1 is provided with a turntable boss 11 in the radial direction, and the turntable boss 11 is provided with the action surface 111. The turntable boss 11 is provided with a circumferential arc surface 112 connected to the action surface 111 on the side away from the rotation center of the turntable 1 and close to the elastic member 2 along the rotation direction (circumferential direction) of the turntable 1. When the turntable 1 is in the closed position, the mating surface 211 is tangent to the circumferential arc surface 112 so that the rotation direction of the turntable 1 is no longer affected by the closing unloading force of the reaction force portion 21, that is, the reaction force portion 21 no longer generates an action force on the rotation direction (opening direction) of the turntable 1. Figures 9-11 、 Figures 15-17 As shown, when the switch is in a closed and stationary state (the turntable 1 is in the closed position), the elastic force direction of the elastic member 2 is perpendicular to the rotation direction of the turntable 1, and the elastic force direction of the elastic member 2 is toward the rotation center of the turntable 1. The component of the force of the elastic member 2 on the turntable 1 in the rotation direction is zero (that is, the closing unloading force is zero), so that the moving and static contacts of the switch body 4 and the output shaft 51 of the operating mechanism 5 remain in a stationary state, without affecting the various performance properties of the switch, thereby improving the reliability of the switch. At the same time, the elastic force direction of the elastic member 2 acts entirely in the radial direction of the turntable 1, so that the turntable 1 is restricted in the closed position, thereby improving the closing stability of the switch. It should be noted that the perfect result is that the component of the force applied by the elastic member 2 on the turntable 1 in the direction of rotation of the turntable 1 is zero, but in reality it only needs to be relatively small. The component of the force applied by the elastic member 2 in the direction of rotation of the turntable 1 will not cause the turntable 1 to rotate in the direction of opening the gate. For example, the direction of the elastic force applied by the elastic member 2 on the turntable 1 is nearly perpendicular to the direction of rotation of the turntable 1, and the angle between the two is between 80-100°. The specific angle is not limited in this application.

[0051] like Figure 8 、 Figures 12-14As shown, during the process of the turntable 1 rotating from the closed position to the open position, the reaction force portion 21 acts on the action surface 111 of the turntable 1 to apply a closing unloading force that causes the turntable 1 to rotate toward the open position, thereby accelerating the turntable 1 to rotate to the open position. Specifically, during the closing process, the action surface 111 of the turntable boss 11 acts on the mating surface 211 of the reaction force portion 21 to drive the elastic member 2 to store energy. When the turntable 1 rotates to the closed position, the circumferential arc surface 112 of the turntable boss 11 acts on the mating surface 211 of the reaction force portion 21 to keep the elastic member 2 in the energy storage state, as shown in FIG. Figures 9-11 、 Figures 15-17 As shown; during the opening process, the turntable 1 rotates under the opening driving force, causing the reaction force portion 21 to break away from the restriction of the turntable boss 11 and release energy, and then the matching surface 211 of the reaction force portion 21 acts on the action surface 111 of the turntable boss 11 to apply its closing unloading force. The turntable 1 continues to rotate to the opening position driven by the opening driving force and the closing unloading force, as shown Figures 2-3 During the closing process, the rotary disk 1 drives the elastic member 2 to store energy. During the opening process, the elastic member 2 releases energy to apply the closing unloading force that rotates the rotary disk 1 toward the opening position. This accelerates the separation speed of the moving and static contacts, improves the switch's rapid breaking capability, and reduces arc burning of the moving and static contacts.

[0052] like Figure 8 、 Figures 12-14 As shown, when the mating surface 211 of the reaction portion 21 used to cooperate with the turntable 1 just contacts the action surface 111 during the process of the turntable 1 rotating from the open position to the closed position, the mating surface 211 is perpendicular to the rotation direction of the turntable 1, so that the elastic force of the elastic member 2 acting on the turntable 1 is fully acted in the movement direction of the turntable 1, thereby improving the effective conversion rate of the elastic force of the elastic member 2, increasing the closing unloading force on the turntable 1, and effectively preventing the moving contact from rebounding.

[0053] like Figure 8 As shown, the turntable boss 11 is provided with a boss notch 113 along the rotational direction of the turntable 1, forming an action surface 111 located on one side of the boss notch 113 in the rotational direction of the turntable 1, and a turntable stopper 114 stacked with the boss notch 113 in the axial direction of the turntable 1. When the turntable 1 is in the open position, the reaction force portion 21 is located within the boss notch 113 and is restricted by the turntable stopper 114. The notch design of the turntable boss 11 further stabilizes the fit between the turntable 1 and the elastic member 2, making it less likely for the elastic member 2 to deflect in the axial direction of the turntable 1.

[0054] like Figures 2-5As shown, the action surface 111 is perpendicular to the radial surface of the rotating disc 1, and the counterforce part 21 is arranged on the movement track of the action surface 111 during the rotating process of the rotating disc 1 from the open position to the closed position, and the matching surface 211 of the counterforce part 21 is spaced apart from or in contact with the action surface 111 when the rotating disc 1 is in the open position, i.e. the starting point of the closing process. The matching between the counterforce part 21 and the rotating disc 1 is simple, the structure is simplified, and the assembly and manufacturing are facilitated. Of course, the action surface 111 can be a flat surface, a folded surface, an arc surface, or a combination of a flat surface and an arc surface, etc. As other embodiments, the action surface 111 and the radial surface of the rotating disc 1 can also be an inclined flat surface or an inclined surface arranged at other angles.

[0055] As shown in Figure 3 and Figure 19 The elastic member 2 is installed on the base 3 and is limited between the first limiting surface 31 and the second limiting surface 32 of the base 3, the counterforce part 21 of the elastic member 2 is arranged opposite to the first limiting surface 31, the elastic member 2 is provided with a fixed part 22 serving as the movement support of the counterforce part 21, and the fixed part 22 abuts against the second limiting surface 32. As shown in Figures 2-5 In the initial stage of the closing process, the matching surface 211 of the counterforce part 21 abuts against the first limiting surface 31, and gradually separates from the first limiting surface 31 as the counterforce part 21 deforms and swings in the direction (counterclockwise direction in the figure) close to the fixed part 22; as shown in Figures 6-7 When the closing is in place (the rotating disc 1 is in the closed position), the counterforce part 21 completely separates from the limitation of the first limiting surface 31, and abuts against the circumferential arc surface 112 of the rotating disc 1, and is limited by the rotating disc 1 instead.

[0056] As shown in Figures 8-11As shown, the structure of the elastic member 2 of the first embodiment is a torsion spring, comprising a spring body 23, which is sleeved on the mounting shaft 33 of the base 3. One end of the spring body 23 extends outward along the first extension direction to form the reaction force portion 21, and the other end of the spring body 23 extends outward along the second extension direction to form the fixed portion 22. The outer side of the reaction force portion 21 facing away from the fixed portion 22 is a mating surface 211 for mating with the turntable boss 11. The torsion spring elastic member 2 of this embodiment has a more stable and reliable elastic force. Furthermore, the first extension direction and the second extension direction are tangential directions of the spring body 23, and the first extension direction is perpendicular to the second extension direction. Of course, the first extension direction and the second extension direction can also be radial or other directions of the spring body 23. Preferably, the reaction force portion 21 is a J-shaped structure formed by bending its end portion inward; and the fixed portion 22 is an L-shaped structure formed by bending its end portion along the axial direction of the spring body 23. The end of the reaction part 21 for cooperating with the turntable 1 and the end of the fixing part 22 for cooperating with the base 3 are reinforced by a bending design. Obviously, the torsion spring can also be of other shapes, and the reaction part 21 and the fixing part 22 can also be straight or have other shapes of bends.

[0057] like Figures 12-17 As shown, the elastic member 2 structure of embodiment 2 is a spring, one end of the spring is the reaction portion 21, and the other end is the fixed portion 22. The outer side of the reaction portion 21 facing away from the fixed portion 22 is a mating surface 211 for mating with the turntable boss 11. The spring-type elastic member 2 of this embodiment has a simple structure and is easy to install and manufacture. Furthermore, the reaction portion 21 and the fixed portion 22 are connected in an L-shape. Obviously, the elastic member 2 can also have other shapes, such as V-shaped, N-shaped, W-shaped, etc.

[0058] like Figure 20As shown, the operating mechanism 5 of the embodiment includes a rocker arm 53 arranged to rotate around an axis o1-o1 and a main shaft 52 arranged to rotate around an axis o-o, a transmission structure connected in transmission with the main shaft 52 and the rocker arm 53 respectively, a connecting rod structure connected in transmission with the turntable 1, and a main spring 54 connected with the rocker arm 53 and the connecting rod structure respectively and used to provide opening and closing driving force; the connecting rod structure includes an output shaft 51; the axis o-o is arranged in parallel and at intervals with the axis o1-o1. When the operating mechanism 5 is closing and opening, the main shaft 52 is driven to rotate by external force, the main shaft 52 drives the rocker arm 53 to rotate through the transmission structure, the rocker arm 53 drives the main spring 54 to act to the maximum energy storage position, and after the main spring 54 is continuously driven to pass the maximum energy storage position, the main spring 54 starts to release energy and drives the turntable 1 to rotate to the closing position and the opening position through the output shaft 51 of the connecting rod structure, the turntable 1 drives the movable contact mechanism of the switch unit 41 to close and open the corresponding static contact, and it needs to be noted that the structure and action principle of the transmission structure used to connect in transmission between the main shaft 52 and the rocker arm 53 and the connecting rod structure used to connect in transmission between the main spring 54 and the turntable 1 are both prior art, and the connecting rod structure usually includes a lock catch and a jump catch in snap fit, which will not be described in detail.

[0059] As shown, Figure 20 In the embodiment, the operating mechanism 5 further includes an opening assisting structure 6 connected in direct or indirect transmission with the main shaft 52, the opening assisting structure 6 is connected with the turntable 1, and the main shaft 52 directly applies an opening auxiliary force to the turntable 1 through the opening assisting structure 6 when opening. When the operating mechanism 5 is opening, the main shaft 52 is driven to rotate by external force, the main shaft 52 drives the rocker arm 53 to rotate through the transmission structure, and the main shaft 52 simultaneously applies an opening auxiliary force to the turntable 1 through the opening assisting structure 6, the rocker arm 53 drives the main spring 54 to pass the maximum energy storage position, and after the main spring 54 starts to release energy, the main spring 54 drives the turntable 1 to rotate to the opening position through the connecting rod structure, and the opening assisting structure 6 and the main spring 54 jointly apply an opening force to ensure that the turntable 1 is successfully rotated to the opening position. The opening assisting structure 6 includes an assisting part 612 arranged to make circular motion around the axis o-o, the opening assisting structure 6 is connected with the turntable 1 through the assisting part 612, and the assisting part 612 can apply an opening auxiliary force to the turntable 1 to make it rotate to the opening position before, at or after the main spring 54 starts to release energy.

[0060] The opening assist structure 6 of this embodiment includes an assist turntable 61 and an assist link 62. The assist turntable 61 includes an assist turntable body 611 arranged to rotate around the axis oo and an assist portion 612 arranged on the assist turntable body 611. The assist turntable body 611 is directly or indirectly transmitted with the main shaft 52. The assist turntable body 611 is arranged on the main shaft 52 and rotates synchronously with the main shaft 52; the assist link 62 is respectively connected to the assist turntable body 611 and the rocker arm 53; the main shaft 52 simultaneously drives the rocker arm 53 to rotate through the opening assist structure 6 and the transmission structure.

[0061] like Figures 9-10 、 Figure 20 As shown, the turntable 1 is provided with a turntable rotating part 14 on the side facing the switch body 4, and the turntable rotating part 14 is rotatably mounted in the mounting hole 34 on the base 3, and is transmission-connected to the moving contact mechanism of the switch body 4, and the turntable 1 is provided with a transmission hole 12 for inserting the output shaft 51 of the operating mechanism 5 and a turntable arc groove 13 for cooperating with the opening assist structure 6 on the side facing the operating mechanism 5, and one end of the assist part 612 of the opening assist structure 6 is inserted into the turntable arc groove 13 and can make circular motion along the turntable arc groove 13, and a turntable blocking surface 131 is provided at one end of the turntable arc groove 13. When opening the switch, the assist part 612 is against the turntable blocking surface 131 before, when or after the main spring 54 starts to release energy. The main shaft 52 applies an opening auxiliary force to the turntable 1 through the opening assist structure 6, which can ensure that the turntable 1 successfully rotates to the opening position when the torque applied to the turntable 1 by the main spring 54 through the connecting rod structure cannot rotate the turntable 1 to the opening position.

[0062] The following is a first cooperation mode between the brake opening assist structure 6 and the rotary disc 1:

[0063] When the operating mechanism 5 is opened, the main shaft 52, under external force, drives the rocker arm 53 to rotate. After the rocker arm 53 drives the main spring 54 to the maximum energy storage position, the main shaft 52 continues to rotate, driving the main spring 54 beyond the maximum energy storage position through the rocker arm 53. The main spring 54 then begins to release energy, driving the turntable 1 to rotate toward the open position via the connecting rod structure. The assisting portion 612 begins to apply an assisting force to the turntable 1 to rotate toward the open position before the main spring 54 begins to release energy. The phrase "the assisting portion 612 applies an assisting force to the turntable 1 to rotate toward the open position before the main spring 54 begins to release energy" refers to the moment when the assisting portion 612 applies the assisting force to the turntable 1 before the main spring 54 begins to release energy. That is, before the main spring 54 begins to release energy, the opening assisting structure 6 is actuated by the main shaft 52, applying an assisting force to the turntable 1 to rotate toward the open position via the assisting portion 612. It should be noted that before the main spring 54 starts to release energy, the angle at which the assisting portion 612 drives the turntable 1 to rotate will not disconnect the moving contact mechanism from the static contact.

[0064] The cooperation between the opening assisting structure 6 and the rotating disc 1 makes the opening assisting structure 6 drive the movable contact mechanism to the opening position through the rotating disc 1 before the main spring 54 starts to release energy, so that the resistance applied by the movable contact mechanism to the rotating disc 1 is reduced when the main spring 54 drives the rotating disc 1 to rotate, and the opening operation is ensured to be successful.

[0065] The second cooperation between the opening assisting structure 6 and the rotating disc 1 is as follows:

[0066] When the operating mechanism 5 is opened, the main shaft 52 is driven to rotate by an external force, the rocker arm 53 is driven to rotate by the main shaft 52, and the main spring 54 is driven to act to the maximum energy storage position by the rocker arm 53. Then, the main shaft 52 continues to rotate to drive the main spring 54 to pass the maximum energy storage position through the rocker arm 53, and the main spring 54 starts to release energy to drive the rotating disc 1 to rotate to the opening position through the connecting rod structure. The assisting part 612 applies the opening auxiliary force to the rotating disc 1 to make it rotate to the opening position when or after the main spring 54 starts to release energy. When the assisting part 612 applies the opening auxiliary force to the rotating disc 1 to make it rotate to the opening position when the main spring 54 starts to release energy, the time when the assisting part 612 applies the opening auxiliary force to the rotating disc 1 is the same as the time when the main spring 54 starts to release energy. When the assisting part 612 applies the opening auxiliary force to the rotating disc 1 to make it rotate to the opening position after the main spring 54 starts to release energy, the time when the assisting part 612 applies the opening auxiliary force to the rotating disc 1 is after the time when the main spring 54 starts to release energy. That is, when the operating mechanism 5 is opened by the external force acting on the main shaft 52, the main shaft 52 is driven to rotate by the external force, the rocker arm 53 is driven to rotate by the main shaft 52, and the main spring 54 is driven to act to the maximum energy storage position by the rocker arm 53. The position of the rocker arm 53 is a critical position when the main spring 54 is driven to act to the maximum energy storage position by the rocker arm 53. After the rocker arm 53 continues to rotate through the first angle from the critical position, the main spring 54 starts to release energy to drive the rotating disc 1 to rotate to the opening position through the connecting rod structure. After the rocker arm 53 continues to rotate through the second angle from the critical position, the assisting part 612 starts to apply the opening auxiliary force to the rotating disc 1. The first angle is less than or equal to the second angle. When the first angle is equal to the second angle, the assisting part 612 starts to apply the opening auxiliary force to the rotating disc 1 when the main spring 54 starts to release energy. When the first angle is less than the second angle, the assisting part 612 starts to apply the opening auxiliary force to the rotating disc 1 after the main spring 54 starts to release energy. The first angle being less than or equal to the second angle ensures that the opening assisting structure 6 does not act on the rotating disc 1 before the main spring 54 starts to release energy.

[0067] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when in use, and are only for the convenience of description, and do not indicate that the device or element referred to must have a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating relative importance.

[0068] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all should be considered as falling within the protection scope of the present application.

Claims

1. A closing force relief structure, comprising a rotating disc (1) for being connected with a moving contact mechanism transmission, the rotating disc (1) is rotatably arranged and capable of rotating between an open position and a closed position, characterized in that: The closing force relieving structure further comprises an elastic member (2) provided with a counterforce portion (21), and the rotating disc (1) is provided with an acting surface (111) matched with the counterforce portion (21); during the rotating process of the rotating disc (1) from the open position to the closed position, the counterforce portion (21) applies a closing force relieving force to the acting surface (111) to rotate the rotating disc (1) to the open position; and when the rotating disc (1) is in the closed position, the acting surface (111) is separated from the counterforce portion (21).

2. The closing force releasing structure according to claim 1, characterized in that: During the rotating process of the rotating disc (1) from the closed position to the open position, the counterforce portion (21) applies a closing force relieving force to the acting surface (111) of the rotating disc (1) to rotate the rotating disc (1) to the open position, and accelerates the rotating disc (1) to rotate to the open position.

3. The closing force releasing structure according to claim 1, characterized in that: The counterforce portion (21) comprises a matched surface (211) matched with the rotating disc (1), and the rotating disc (1) is provided with a rotating disc boss (11) in the radial direction, the rotating disc boss (11) is provided with the acting surface (111), and the rotating disc boss (11) is provided with a circumferential arc surface (112) connected with the acting surface (111) on the side of the rotating disc boss (11) away from the rotating center of the rotating disc (1) and close to the elastic member (2) in the rotating direction of the rotating disc (1), and when the rotating disc (1) is in the closed position, the matched surface (211) of the elastic member (2) is tangent to the circumferential arc surface (112).

4. The closing force releasing structure according to claim 3, characterized in that: When the matched surface (211) initially contacts the acting surface (111) during the rotating process of the rotating disc (1) from the open position to the closed position, the matched surface (211) is perpendicular to the rotating direction of the rotating disc (1).

5. The closing force releasing structure according to claim 3, characterized in that: The rotating disc boss (11) is provided with a boss gap (113) in the rotating direction of the rotating disc (1) to form the acting surface (111) on one side of the boss gap (113) in the rotating direction of the rotating disc (1) and a rotating disc limiting portion (114) stacked with the boss gap (113) in the axial direction of the rotating disc (1); when the rotating disc (1) is in the open position, the counterforce portion (21) is located in the boss gap (113) and is limited by the rotating disc limiting portion (114).

6. The closing force releasing structure according to claim 1, characterized in that: The acting surface (111) is perpendicular to the radial surface of the rotating disc (1), and the counterforce portion (21) is arranged on the movement track of the acting surface (111) during the rotating process of the rotating disc (1) from the open position to the closed position; when the rotating disc (1) is in the open position, the counterforce portion (21) is arranged separately from or in contact with the acting surface (111).

7. The closing force releasing structure according to claim 1, characterized in that: The elastic member (2) is mounted on the base (3) and is located between the first limiting surface (31) and the second limiting surface (32) of the base (3), the counterforce portion (21) of the elastic member (2) is arranged opposite to the first limiting surface (31), the elastic member (2) is provided with a fixed portion (22) serving as the movement support of the counterforce portion (21), and the fixed portion (22) abuts against the second limiting surface (32).

8. The closing force releasing structure according to claim 1, characterized in that: The elastic member (2) is a torsion spring, comprising a spring body (23), one end of the spring body (23) extends outward along a first extension direction to form the counterforce part (21), the other end of the spring body (23) extends outward along a second extension direction to form a fixed part (22), the outer side of the counterforce part (21) away from the fixed part (22) is a matching surface (211) for matching with the rotating disc (1).

9. The closing force releasing structure according to claim 8, characterized in that: The first extension direction and the second extension direction are tangent directions of the spring body (23), and the first extension direction is perpendicular to the second extension direction.

10. A rotary disconnector, characterised in that: The closing and force relieving structure comprises the closing and force relieving structure according to any one of claims 1-12.

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