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 of the utility model, during the switching-on process, the counter-force part of the elastic member is used to apply the switching-on unloading force that the rotating disc rotates towards the switching-off position so as to share a part of switching-on driving force output to the rotating disc by the operating mechanism, and the phenomenon that the moving contact rebounds after rotating over the switching-on position 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 utility model relates to the field of low-voltage electrical appliances, in particular to a closing force-releasing structure and a rotary isolating switch. Background Art

[0002] The rotary isolating switch includes a stacked operating mechanism and a plurality of switch bodies, the operating mechanism is connected to the moving contact mechanism of the adjacent switch bodies by transmission, and the moving contact mechanisms of the adjacent switch bodies are connected in sequence by transmission. Most of the moving and static contact modes of the rotary isolating switches are plug-in contact (blade-type contact), that is, the moving contact mechanism includes a contact shaft and two moving contact pieces installed on the contact shaft and arranged relatively and spaced apart, and the moving contact clamps the sheet-shaped static contact when it rotates to the closing position, and the friction between the moving and static contacts is relatively small (that is, the torque of the switch body is small), which is conducive to the opening of the switch by the operating mechanism. However, due to inertia problems when the switch is closed, after the operating mechanism rotates to the closing position, the moving contact of the switch body will slightly rotate past the closing position due to inertia problems and then rebound to the closing position, which will cause excessive rebound. The moving contact mechanism rebounds beyond the closing position, especially the switch body far away from the operating mechanism among the multiple switch bodies. The farther away, the more the angle of rotation past the closing position, and the larger the rebound angle, resulting in unreliable switch closing. Utility Model Content

[0003] The utility model aims to overcome at least one defect of the prior art and provide a closing force release structure and a rotary disconnector.

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

[0005] The closing force unloading structure comprises a turntable which is transmission-connected to the moving contact mechanism, the turntable is rotatably arranged and can rotate between an opening position and a closing position, the closing force unloading structure also comprises an elastic member, the elastic member is provided with a reaction force portion, and the turntable is provided with an action surface cooperating with the reaction force portion; in the process of the turntable rotating from the opening position to the closing position, the reaction force portion applies a closing unloading force to the action surface to rotate the turntable toward the opening position, and when the turntable is in the closing position, the action surface is separated from the reaction force portion.

[0006] Optionally, during the process of the turntable rotating from the closing position to the opening position, the reaction force portion acts on the action surface of the turntable to apply a closing unloading force that causes the turntable to rotate toward the opening position, thereby accelerating the rotation of the turntable to the opening position.

[0007] Optionally, the reaction force portion includes a mating surface for mating with the turntable, a turntable boss is provided in the radial direction of the turntable, the turntable boss is provided with the action surface, and the turntable boss is provided with a circumferential arc surface connected to the action surface on the side away from the rotation center of the turntable and close to the elastic member along the rotation direction of the turntable, and when the turntable is in the closing position, the mating surface of the elastic member is tangent to the circumferential arc surface.

[0008] Optionally, when the mating surface first comes into contact with the action surface during the process of the turntable rotating from the open position to the closed position, the mating surface is perpendicular to the rotation direction of the turntable.

[0009] Optionally, a boss notch is provided on the turntable boss along the rotation direction of the turntable to form an action surface located on one side of the boss notch in the rotation direction of the turntable and a turntable limiting portion stacked with the boss notch in the axial direction of the turntable; when the turntable is in the opening position, the reaction force portion is located in the boss notch and is limited by the turntable limiting portion.

[0010] Optionally, the action surface is perpendicular to the radial surface of the turntable, and the reaction force portion is arranged on the movement trajectory of the action surface during the rotation of the turntable from the opening position to the closing position; when the turntable is in the opening position, the reaction force portion is spaced apart from or in contact with the action surface.

[0011] Optionally, the elastic member is installed on the base and the upper limit is located between the first limit surface and the second limit surface of the base. The reaction force part of the elastic member is arranged opposite to the first limit surface. The elastic member is provided with a fixed part serving as a motion support for the reaction force part, and the fixed part abuts against the second limit surface.

[0012] Optionally, the elastic member is a torsion spring including a spring body, one end of the spring body extending outward along a first extension direction to form the reaction force portion, the other end of the spring body extending outward along a second extension direction to form a fixed portion, and the outer side of the reaction force portion facing away from the fixed portion is a mating surface for mating with the turntable.

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

[0014] Optionally, the reaction force portion is a J-shaped structure formed by bending its end inward; and the fixing portion is an L-shaped structure formed by bending its end along the axial direction of the spring body.

[0015] Optionally, the elastic member is a spring sheet, one end of which is the reaction part, and the other end is the fixed part, and the outer side surface of the reaction part facing away from the fixed part is a mating surface for mating with the turntable.

[0016] Optionally, the reaction force portion and the fixing portion are connected in an L-shape.

[0017] A rotary disconnector comprises any one of the closing force-releasing structures.

[0018] Optionally, it includes a stacked operating mechanism and a switch body, the switch body includes multiple groups of switch units, the switch units include moving contact mechanisms and static contacts, and the operating mechanism is transmission-connected to the moving contact mechanisms of adjacent switch units through a rotating disk of a closing and unloading structure.

[0019] Optionally, the turntable is provided with a turntable rotating part on the side facing the switch body, the turntable rotating part is rotatably mounted in the mounting hole on the base, and is transmission-connected with the moving contact mechanism of the switch body, and the turntable is provided with a transmission hole for inserting the output shaft of the operating mechanism and a turntable arc groove for cooperating with the opening assist structure on the side facing the operating mechanism;

[0020] The gate-opening assisting structure includes an assisting part that performs circular motion along the arc groove of the turntable. One end of the assisting part of the gate-opening assisting structure is inserted into the arc groove of the turntable, and a turntable stop surface is provided at one end of the arc groove of the turntable. When the operating mechanism opens the gate, the assisting part abuts against the turntable stop surface before, when or after the main spring of the operating mechanism starts to release energy, and applies an assisting force to the turntable to rotate it toward the opening position.

[0021] The closing force unloading structure and the rotary isolating switch of the utility model apply the closing unloading force of the rotating disk to the opening position through the reaction force part of the elastic member during the closing process, so as to share a part of the closing driving force output to the rotating disk by the operating mechanism, avoid or weaken the phenomenon that the moving contact rotates past the closing position and then rebounds after the switch is closed, and improve the reliability of the switch closing.

[0022] In addition, when the switch is closed and in a stationary state, the direction of the elastic force of the elastic member is perpendicular to the rotation direction of the turntable, and the elastic force on the turntable in the rotation direction is zero, so that the moving and static contacts of the switch body and the output shaft of the operating mechanism remain stationary, and the various performance characteristics of the switch are not affected, thereby improving the reliability of the switch. At the same time, the elastic force of the elastic member all acts in the radial direction of the turntable, so that the turntable is restricted in the closed position, thereby improving the closing stability of the switch.

[0023] In addition, during the closing process, the turntable drives the elastic part to store energy, and during the opening process, the elastic part releases energy to apply a closing unloading force to rotate the turntable toward the opening position, thereby accelerating the separation speed of the moving and static contacts, improving the switch's rapid breaking capacity, and reducing the burning of the moving and static contacts by the arc.

[0024] In addition, the elastic force of the elastic member acting on the turntable all acts in the moving direction of the turntable, thereby improving the effective conversion rate of the elastic force of the elastic member, increasing the closing unloading force on the turntable, and effectively preventing the moving contact from rebounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is an exploded view of the rotary isolating switch of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the rotary disk, the switch body and the elastic member in the open position of the utility model;

[0027] Figure 3 It is a front view of the rotary disk, the switch body and the elastic member in the open position of the utility model;

[0028] Figure 4 It is a three-dimensional diagram of the rotary disk, the switch body and the elastic member during the closing process of the utility model;

[0029] Figure 5 It is a cross-sectional view of the rotary disk, the switch body and the elastic member during the closing process of the utility model;

[0030] Figure 6 It is a three-dimensional diagram of the rotary disk, the switch body and the elastic member in the closed position of the utility model;

[0031] Figure 7 It is a cross-sectional view of the rotary disk, the switch body and the elastic member in the closed position of the utility model;

[0032] Figure 8 It is a back perspective view of the rotary disk and the elastic member of the first embodiment of the utility model during the closing process;

[0033] Fig. 9 It is a back perspective view of the rotary disk in the closing position of the utility model and the elastic member of the first embodiment;

[0034] Fig.10 It is a front perspective view of the rotary disk in the closing position of the utility model and the elastic member of the first embodiment;

[0035] Fig.11 It is a front view of the rotary disk in the closing position of the utility model and the elastic member of the first embodiment;

[0036] Fig.12 It is a back perspective view of the rotary disk and the elastic member of the second embodiment of the utility model during the closing process;

[0037] Fig.13 It is a front perspective view of the rotary disk and the elastic member of the second embodiment of the utility model during the closing process;

[0038] Fig.14 It is a front view of the rotary disk and the elastic member of the second embodiment of the utility model during the closing process;

[0039] Fig.15 It is a back perspective view of the rotary disk in the closing position of the utility model and the elastic member of the second embodiment;

[0040] Fig.16It is a front perspective view of the rotary disk in the closing position of the utility model and the elastic member of the second embodiment;

[0041] Fig.17 It is a front view of the rotary disk in the closing position of the utility model and the elastic member of the second embodiment;

[0042] Fig.18 It is a structural schematic diagram of the turntable of the utility model;

[0043] Fig.19 It is a structural schematic diagram of the base of the utility model;

[0044] Fig. 20 It is a structural schematic diagram of the operating mechanism of the utility model;

[0045] Turntable 1; turntable boss 11; action surface 111; circumferential arc surface 112; boss notch 113; turntable limit portion 114; transmission hole 12; turntable arc groove 13; turntable blocking surface 131; turntable rotating portion 14; elastic member 2; reaction portion 21; matching surface 211; fixing portion 22; spring body 23; base 3; first limit surface 31; second limit 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 brake assist structure 6; assist turntable 61; assist turntable body 611; assist portion 612; assist connecting rod 62. DETAILED DESCRIPTION

[0046] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the closing force release structure and the rotary disconnector of the present invention. The closing force release structure and the rotary disconnector of the present invention are not limited to the description of the following embodiments.

[0047] like Figure 1 As shown, the rotary isolating switch of this embodiment includes a stacked operating mechanism 5 and a switch body 4, wherein the switch body 4 includes at least one group of switch units 41, wherein the switch unit 41 includes a moving contact mechanism and a static contact, and the operating mechanism 5 is connected to the moving contact mechanism of each switch unit 41 through the turntable 1, and drives the moving contact mechanism to rotate to close and disconnect with the corresponding static contact, thereby realizing the closing and opening of the rotary isolating switch. Specifically, one end of the operating mechanism 5 is provided with a main shaft 52 for external force operation, and the other end of the operating mechanism 5 is provided with an output shaft 51, wherein the output shaft 51 is inserted into the transmission hole 12 of the turntable 1 to realize the hinge connection with the turntable 1, and provides the turntable 1 with the closing driving force and the opening driving force, and the moving contact mechanism includes a contact shaft and two moving contact pieces installed on the contact shaft and arranged at intervals with respect to each other, and when the moving contact rotates to the closing position, it clamps the sheet-like static contact to realize the closing of the switch. The turntable 1 is rotatably arranged in the mounting hole 34 on the base 3 ( Fig.19), can rotate between the opening position and the closing position, the rotary disk 1 and the contact shaft of the moving contact mechanism of the switch unit 41 adjacent to the operating mechanism 5 are coaxially rotated and connected in transmission, and the moving contact mechanisms of each switch unit 41 are sequentially connected in transmission. In this embodiment, the rotary disk 1 and the contact shaft of the moving contact mechanism are separately set and then connected. Obviously, the rotary disk 1 and the contact shaft of the moving contact mechanism can also be set in one piece. It should be noted that the operating principle of the operating mechanism 5 and the switch body 4 in this embodiment belongs to the prior art and will not be described in detail here.

[0048] like Figure 2-7 The rotary disconnector of the present embodiment further comprises a closing force unloading structure, the closing force unloading structure comprises an elastic member 2, the elastic member 2 is provided with a reaction force portion 21, the rotary disc 1 is provided with an action surface 111 cooperating with the reaction force portion 21; in the process of the rotary disc 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 rotary disc 1 toward the opening position, and the action surface 111 is separated from the reaction force portion 21 when the rotary disc 1 is in the closing position. Specifically, in the process of the rotary disc 1 rotating from the opening position to the closing position, as Figure 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 portion 21 as shown in FIG. Figure 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 a closing unloading force to rotate the rotary disk 1 toward the opening 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 rotary disk 1 to continue to rotate clockwise to the closing position as shown in FIG. Figure 6-7 As shown, at this time, the action surface 111 is separated from the reaction force portion 21 and is no longer subjected to the closing unloading force of the reaction force portion 21, that is, the action force applied by the elastic member 2 on the rotary disk 1 does not cause the rotary disk 1 to rotate toward the opening position. The closing unloading structure and the rotary disconnector of this embodiment apply the closing unloading force of the rotary disk 1 to rotate toward the opening position through the reaction force portion 21 of the elastic member 2 during the closing process, so as to share a part of the closing driving force output by the operating mechanism 5 to the rotary disk 1, avoid or weaken the phenomenon that the moving contact rotates past the closing position and rebounds after the switch is closed, and improve 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 force 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 so that the moving contact and the corresponding static contact are closed and opened. It should be noted that the closing force unloading structure is preferably arranged in a 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 force 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 be Figure 2-11 The torsion spring of the first embodiment, or Figure 12-18 The spring piece of the second embodiment, or the elastic arm of plastic, for example, the elastic arm integrally formed and extended from the base 3, can be set at an angle, can be straight, curved, wavy, etc., of course, the elastic arm can also be set independently. Obviously, the elastic member 2 can also be an elastic member of other structures, and those skilled in the art can adjust it as needed.

[0050] like Figure 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 closing 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. Figure 9-11 , Figure 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, and the various performances of the switch are not affected, 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 rotation direction 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 rotation direction of the turntable 1 will not cause the turntable 1 to rotate in the opening direction. For example, the direction of the elastic force applied by the elastic member 2 on the turntable 1 is nearly perpendicular to the rotation direction 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 , Figure 12-14As shown, during the process of the turntable 1 rotating from the closing position to the opening position, the reaction force portion 21 acts on the action surface 111 of the turntable 1 to apply a closing unloading force to rotate the turntable 1 toward the opening position, thereby accelerating the turntable 1 to rotate to the opening 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 closing 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. Figure 9-11 , Figure 15-17 As shown; during the opening process, the turntable 1 is rotated by the opening driving force, so that the reaction force part 21 is freed from the restriction of the turntable boss 11 and releases energy, and then the matching surface 211 of the reaction force part 21 acts on the action surface 111 of the turntable boss 11 to exert its closing unloading force, and the turntable 1 is driven by the opening driving force and the closing unloading force and continues to rotate to the opening position, as shown in FIG. Figure 2-3 During the closing process, the rotary disc 1 drives the elastic member 2 to store energy, and during the opening process, the elastic member 2 releases energy to apply a closing unloading force to rotate the rotary disc 1 toward the opening position, thereby accelerating the separation speed of the moving and static contacts, improving the fast breaking capacity of the switch, and reducing the burning of the moving and static contacts by the arc.

[0052] like Figure 8 , Figure 12-14 As shown, when the mating surface 211 of the reaction force portion 21 used to cooperate with the turntable 1 just starts to contact 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, a boss notch 113 is provided on the turntable boss 11 along the rotation direction of the turntable 1, so as to form an action surface 111 located on one side of the boss notch 113 in the rotation direction of the turntable 1 and a turntable limiting portion 114 stacked with the boss notch 113 in the axial direction of the turntable 1; when the turntable 1 is in the off position, the reaction force portion 21 is located in the boss notch 113 and is limited by the turntable limiting portion 114. The notch design of the turntable boss 11 makes the cooperation between the turntable 1 and the elastic member 2 more stable, and the elastic member 2 is not easy to deviate in the axial direction of the turntable 1.

[0054] like Figure 2-5As shown, the action surface 111 is perpendicular to the radial surface of the turntable 1, and the reaction force portion 21 is arranged on the movement trajectory of the action surface 111 during the rotation of the turntable 1 from the opening position to the closing position. When the turntable 1 is at the opening position, that is, the starting point of the closing process, the matching surface 211 of the reaction force portion 21 is spaced apart or in contact with the action surface 111. The matching between the reaction force portion 21 and the turntable 1 is simple, the structure is simplified, and it is easy to assemble and manufacture. Of course, the action surface 111 can be a plane, a folded surface, a curved surface, or a combination of a plane and a curved surface. As other embodiments, the action surface 111 and the radial surface of the turntable 1 can also be an inclined plane or inclined surface set at other angles.

[0055] like Figure 3 and Fig.19 As shown, the elastic member 2 is installed on the base 3 and is located between the first limiting surface 31 and the second limiting surface 32 of the base 3. The reaction force 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 used as a motion support for the reaction force portion 21, and the fixed portion 22 is in contact with the second limiting surface 32. Figure 2-5 As shown, at the beginning of the closing process, the matching surface 211 of the reaction force portion 21 abuts against the first limit surface 3, and as the reaction force portion 21 deforms and swings toward the direction close to the fixing portion 22 (counterclockwise in the figure), it gradually separates from the first limit surface 31; Figure 6-7 As shown, when the switch is fully closed (the turntable 1 is in the closed position), the reaction force portion 21 completely breaks away from the restriction of the first limit surface 31 , abuts against the circumferential arc surface 112 of the turntable 1 , and is restricted by the turntable 1 instead.

[0056] like Figure 8-11As shown, the elastic member 2 structure of the first embodiment is a torsion spring, comprising a spring body 23, the spring body 23 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, and 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 inward; the fixed portion 22 is an L-shaped structure formed by bending its end along the axial direction of the spring body 23. The end of the reaction part 21 used to cooperate with the turntable 1 and the end of the fixing part 22 used to cooperate with the base 3 are reinforced by 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-lined or have other shapes of bends.

[0057] like Figure 12-17 As shown, the structure of the elastic member 2 of the second embodiment, the elastic member 2 is a spring sheet, one end of the spring sheet is the reaction force portion 21, the other end is the fixed portion 22, and the outer side surface 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 spring sheet type elastic member 2 of this embodiment has a simple structure and is easy to install and manufacture. Furthermore, the reaction force portion 21 and the fixed portion 22 are connected in an L shape. Obviously, the elastic member 2 can also be in other shapes, such as V-shaped, N-shaped, W-shaped, etc.

[0058] like Fig. 20As shown, the operating mechanism 5 of this embodiment includes a rocker arm 53 rotatably arranged around the axis o1-o1 and a main shaft 52 rotatably arranged around the axis oo, a transmission structure respectively connected to the main shaft 52 and the rocker arm 53, a connecting rod structure connected to the turntable 1, and a main spring 54 connected to the rocker arm 53 and the connecting rod structure at both ends and used to provide a driving force for opening and closing the switch; the connecting rod structure includes an output shaft 51; the axis oo is arranged parallel to the axis o1-o1 and spaced apart. When the operating mechanism 5 is closed or opened, the main shaft 52 is driven by an external force to rotate, and 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 move to the maximum energy storage position, and continues to drive the main spring 54 beyond the maximum energy storage position. The main spring 54 begins to release energy and drives the turntable 1 to rotate toward the closing position and the opening position through the output shaft 51 of the connecting rod structure. The turntable 1 drives the moving contact mechanism of the switch unit 41 and the corresponding static contact to close and open. It should be noted that the structure and operating principle of the transmission structure for connecting the main shaft 52 and the rocker arm 53 and the connecting rod structure for connecting the main spring 54 and the turntable 1 are both prior arts. The connecting rod structure usually includes a lock buckle and a jump buckle that snap together, which will not be repeated.

[0059] like Fig. 20 As shown, in this embodiment, the operating mechanism 5 also includes a gate-opening assisting structure 6 that is directly or indirectly driven by the main shaft 52. The gate-opening assisting structure 6 is connected to the turntable 1. When the gate is opened, the main shaft 52 directly applies a gate-opening assisting force to the turntable 1 through the gate-opening assisting structure 6. When the operating mechanism 5 is opened, the main shaft 52 is driven to rotate by an external force, and the main shaft 52 drives the rocker arm 53 to rotate through the transmission structure, and the main shaft 52 simultaneously applies a gate-opening assisting force to the turntable 1 through the gate-opening assisting structure 6. After the rocker arm 53 drives the main spring 54 to pass the maximum energy storage position, the main spring 54 begins to release energy and drives the turntable 1 to rotate to the gate-opening position through the connecting rod structure. The gate-opening assisting structure 6 and the main spring 54 jointly apply a gate-opening force to ensure that the turntable 1 successfully rotates to the gate-opening position. The opening brake assisting structure 6 includes an assisting portion 612 that performs circular motion around the axis oo. The opening brake assisting structure 6 is connected to the turntable 1 via the assisting portion 612. The assisting portion 612 can apply an opening brake assisting force to the turntable 1 to rotate it toward the opening brake position before, during, or after the main spring 54 starts to release energy.

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

[0061] like Figure 9-10 , Fig. 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 with the moving contact mechanism of the switch body 4. 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 assisting structure 6 on the side facing the operating mechanism 5. One end of the assisting part 612 of the opening assisting structure 6 is inserted into the turntable arc groove 13 and can make a circular motion along the turntable arc groove 13. A turntable blocking surface 131 is provided at one end of the turntable arc groove 13. When opening the switch, the assisting part 612 abuts 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 gate opening assist structure 6 and the rotary disc 1:

[0063] When the operating mechanism 5 is opened, the main shaft 52 is subjected to external force to drive the rocker arm 53 to rotate. After the rocker arm 53 drives the main spring 54 to move to the maximum energy storage position, the main shaft 52 continues to rotate and drives the main spring 54 through the rocker arm 53 to cross the maximum energy storage position. The main spring 54 starts to release energy and drives the turntable 1 to rotate toward the open position through the connecting rod structure; the booster 612 starts to apply the opening auxiliary force to the turntable 1 to rotate toward the open position before the main spring 54 starts to release energy. The "boosting part 612 applies the opening auxiliary force to the turntable 1 to rotate toward the open position before the main spring 54 starts to release energy" means that the moment when the booster 612 applies the opening auxiliary force to the turntable 1 is before the moment when the main spring 54 starts to release energy. That is, before the main spring 54 starts to release energy, the opening auxiliary force structure 6 is driven by the main shaft 52, and applies the opening auxiliary force to the turntable 1 to rotate toward the open position through the booster 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 stationary contact.

[0064] The above-mentioned cooperation between the opening assist structure 6 and the turntable 1 enables the opening assist structure 6 to pre-actuate the moving contact mechanism to its opening position through the turntable 1 before the main spring 54 starts to release energy, thereby reducing the resistance applied by the moving contact mechanism to the turntable 1 when the main spring 54 releases energy to drive the turntable 1 to rotate, thereby ensuring a successful opening operation.

[0065] The following is a second matching mode between the gate opening assist structure 6 and the rotary disc 1:

[0066] When the operating mechanism 5 is opened, the main shaft 52 is subjected to an external force to drive the rocker arm 53 to rotate. After the rocker arm 53 drives the main spring 54 to move to the maximum energy storage position, the main shaft 52 continues to rotate and drives the main spring 54 to pass the maximum energy storage position through the rocker arm 53. The main spring 54 starts to release energy and drives the turntable 1 to rotate toward the open position through the connecting rod structure; the assisting part 612 applies an auxiliary force to the turntable 1 to rotate toward the open position when or after the main spring 54 starts to release energy; the "assisting part 612" 12 applies an opening auxiliary force to the turntable 1 to rotate it toward the opening position when the main spring 54 starts to release energy” means that the moment when the power-assisting part 612 applies the opening auxiliary force to the turntable 1 is the same as the moment when the main spring 54 starts to release energy; the “the power-assisting part 612 applies an opening auxiliary force to the turntable 1 to rotate it toward the opening position after the main spring 54 starts to release energy” means that the moment when the power-assisting part 612 applies the opening auxiliary force to the turntable 1 is after the moment when the main spring 54 starts to release energy. That is, when the main shaft 52 is subjected to external force and drives the operating mechanism 5 to open the gate, the main shaft 52 is subjected to external force and rotates, the main shaft 52 drives the rocker arm 53 to rotate, and when the rocker arm 53 drives the main spring 54 to move to the maximum energy storage position, the position of the rocker arm 53 is the critical position: after the rocker arm 53 continues to rotate past the first angle from the critical position, the main spring 54 begins to release energy and drives the turntable 1 to rotate to the open gate position through the connecting rod structure; after the rocker arm 53 continues to rotate past the second angle from the critical position, the power assisting part 612 begins to apply the opening auxiliary force to the turntable 1; 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 612 begins to apply the opening auxiliary force to the turntable 1 when the main spring 54 begins to release energy, and when the first angle is less than or equal to the second angle, the power assisting part 612 begins to apply the opening auxiliary force to the turntable 1 after the main spring 54 begins to release energy. The first angle is less than or equal to the second angle, which ensures that the opening auxiliary force structure 6 will not act on the turntable 1 before the main spring 54 begins to release energy.

[0067] 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.

[0068] 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. A closing force-releasing structure, comprising a rotating disk (1) for being transmission-connected to a moving contact mechanism, wherein the rotating disk (1) is rotatably arranged and can rotate between an opening position and a closing position, and is characterized in that: The closing force unloading structure also includes an elastic member (2), the elastic member (2) being provided with a reaction force portion (21), and the rotating disk (1) being provided with an action surface (111) cooperating with the reaction force portion (21); during the process of the rotating disk (1) rotating from the opening position to the closing position, the reaction force portion (21) applies a closing unloading force to the action surface (111) to cause the rotating disk (1) to rotate toward the opening position, and when the rotating disk (1) is in the closing position, the action surface (111) is separated from the reaction force portion (21).

2. The closing force release structure according to claim 1, characterized in that: During the process of the rotating disk (1) rotating from the closing position to the opening position, the reaction force portion (21) acts on the action surface (111) of the rotating disk (1) to apply a closing unloading force that causes the rotating disk (1) to rotate toward the opening position, thereby accelerating the rotation of the rotating disk (1) to the opening position.

3. The closing force release structure according to claim 1, characterized in that: The reaction force portion (21) comprises a mating surface (211) for mating with the turntable (1); a turntable boss (11) is provided in the radial direction of the turntable (1); the turntable boss (11) is provided with the action surface (111); and the turntable boss (11) is provided with a circumferential arc surface (112) connected to the action surface (111) on a side surface away from the rotation center of the turntable (1) and close to the elastic member (2) along the rotation direction of the turntable (1); when the turntable (1) is in the closing position, the mating surface (211) of the elastic member (2) is tangent to the circumferential arc surface (112).

4. The closing force release structure according to claim 3, characterized in that: When the rotating disk (1) rotates from the open position to the closed position, when the matching surface (211) first comes into contact with the action surface (111), the matching surface (211) is perpendicular to the rotation direction of the rotating disk (1).

5. The closing force release structure according to claim 3, characterized in that: A boss notch (113) is provided on the turntable boss (11) along the rotation direction of the turntable (1) to form an action surface (111) located on one side of the boss notch (113) in the rotation direction of the turntable (1) and a turntable limiting portion (114) stacked with the boss notch (113) in the axial direction of the turntable (1); when the turntable (1) is in the opening position, the reaction force portion (21) is located in the boss notch (113) and is limited by the turntable limiting portion (114).

6. The closing force release structure according to claim 1, characterized in that: The action surface (111) is perpendicular to the radial surface of the rotating disk (1), and the reaction force portion (21) is arranged on the movement trajectory of the action surface (111) during the rotation of the rotating disk (1) from the opening position to the closing position; when the rotating disk (1) is in the opening position, the reaction force portion (21) is arranged at a distance from or in contact with the action surface (111).

7. The closing force release structure according to claim 1, characterized in that: The elastic member (2) is mounted on the base (3) and its upper limit is located between a first limit surface (31) and a second limit surface (32) of the base (3); the reaction force portion (21) of the elastic member (2) is arranged opposite to the first limit surface (31); the elastic member (2) is provided with a fixed portion (22) used as a motion support for the reaction force portion (21); and the fixed portion (22) is in contact with the second limit surface (32).

8. The closing force release 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) extending outwardly along a first extension direction to form the reaction force portion (21), the other end of the spring body (23) extending outwardly along a second extension direction to form a fixed portion (22), and 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 (1).

9. The closing force release structure according to claim 8, characterized in that: 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.

10. The closing force release structure according to claim 8, characterized in that: The reaction force portion (21) is a J-shaped structure formed by bending its end portion inward; and the fixing portion (22) is an L-shaped structure formed by bending its end portion along the axial direction of the spring body (23).

11. The closing force release structure according to claim 1, characterized in that: The elastic member (2) is a spring sheet, one end of which is the reaction portion (21), and the other end of which is the fixed portion (22); the outer side surface of the reaction portion (21) facing away from the fixed portion (22) is a matching surface (211) for matching with the turntable (1).

12. The closing force release structure according to claim 11, characterized in that: The reaction force portion (21) and the fixing portion (22) are connected in an L-shape.

13. Rotary isolating switch, characterized in that: It comprises the closing force release structure as described in any one of claims 1-12.

14. The rotary isolating switch according to claim 13, characterized in that: The invention comprises an operating mechanism (5) and a switch body (4) arranged in a stacked manner, wherein the switch body (4) comprises a plurality of switch units (41), wherein the switch units (41) comprise a moving contact mechanism and a stationary contact, and wherein the operating mechanism (5) is connected to the moving contact mechanism of an adjacent switch unit (41) through a rotating disk (1) of a closing force relief structure.

15. The rotary isolating switch according to claim 14, characterized in that: The turntable (1) is provided with a turntable rotating portion (14) on a side facing the switch body (4); the turntable rotating portion (14) is rotatably mounted in a mounting hole (34) on the base (3) and is transmission-connected to a moving contact mechanism of the switch body (4); the turntable (1) is provided with a transmission hole (12) for inserting an output shaft (51) of the operating mechanism (5) and a turntable arc groove (13) for cooperating with a switch-opening assist structure (6) on a side facing the operating mechanism (5); The gate-opening assisting structure (6) comprises an assisting portion (612) that performs a circular motion along the arc-shaped groove (13) of the turntable. One end of the assisting portion (612) of the gate-opening assisting structure (6) is inserted into the arc-shaped groove (13) of the turntable. One end of the arc-shaped groove (13) of the turntable is provided with a turntable stop surface (131). When the operating mechanism (5) opens the gate, the assisting portion (612) abuts against the turntable stop surface (131) before, when or after the main spring (54) of the operating mechanism (5) starts to release energy, thereby applying an assisting force to the turntable (1) to rotate it toward the gate-opening position.

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