Operating mechanism for controlling opening and closing of switch contact

Abstract

The utility model relates to an operating mechanism for controlling closing and opening of a switch contact. The operating mechanism comprises a shell, coupling pieces arranged on the two sides of the shell, a rotating shaft assembly in transmission connection with the coupling pieces on the two sides, a spring assembly arranged between the rotating shaft assembly and the shell, and an electric operating device. One coupling piece is in transmission connection with the electric operation device; one end of the spring assembly abuts against the rotating shaft assembly, and the other end is rotationally connected to the shell. The rotating shaft assembly comprises a linkage shaft and a lever piece which are coaxially and rotatably connected, a first supporting shaft eccentrically arranged on the lever piece, and driving plates arranged on the two sides of the linkage shaft and in transmission connection with the coupling piece. Two ends of the first supporting shaft extend out of the lever sheet; an idle stroke groove is formed in the outer edge of the driving plate, and the extending end is rotationally arranged in the idle stroke groove. Compared with the prior art, an electric operating device can be installed at the side part of the utility model for driving an operating mechanism, and contact modules can also be installed at the left and right sides, namely in the middle of the mechanism, so that rapid switching-on and switching-off can be realized, and ablation of electric arc to contacts is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances and relates to an operating mechanism for controlling the closing and opening of switch contacts. Background Art

[0002] Switches in the low-voltage electrical field are used to control the disconnection and connection of circuits. They open and close quickly to minimize the impact of arcs. At present, most of them need to use external forces applied by handles to drive the switch operating mechanism, thereby driving the switch moving contact to achieve the switching of the switch state. Due to the limitations of the cabinet or installation position, users sometimes need to operate the switch from different directions, such as the front or side. When performing lateral operation, in order to achieve rapid switching of the switch, an idle stroke is usually designed in the transmission stroke between the lateral operating device and the switch operating mechanism, so that the main spring in the operating mechanism can drive the moving contact to move quickly without being interfered by the lateral operating device after passing the dead point. However, due to the existence of this idle stroke, the lateral operating device cannot be stabilized at the two positions corresponding to the switch closing position and the corresponding switch opening position. When the switch is running, the lateral operating device may deviate from the above two positions, resulting in unclear indications, which seriously affects the safety of the switch operation. In addition, most of the lateral operating devices and operating mechanisms on the market currently use two sets of bevel gears for linkage cooperation, which not only has low transmission efficiency, but also requires a large installation and transmission space for bevel gear transmission, which makes the corresponding switch's external dimensions larger. At the same time, the processing cost and manufacturing difficulty of the switch will also increase accordingly.

[0003] In response to the above problems, Chinese patent CN202321020800.0 discloses an operating mechanism, including an operating mechanism, a contact system and a lateral operating device, wherein the operating mechanism drives the moving contact of the contact system to rotate and cooperate with the static contact to realize the closing and opening of the switch, and the lateral operating device includes a lateral operating shaft and an elastic member, one end of the lateral operating shaft is exposed from the switch housing, and the other end is connected to the operating mechanism, and the lateral operating shaft rotates coaxially with the moving contact to drive the moving contact to move through the operating mechanism; the lateral operating shaft has a first position corresponding to the closing of the switch and a second position corresponding to the opening of the switch, when the lateral operating shaft is between the above two positions, the elastic member acts on the lateral operating shaft to make it have a tendency to move toward the above two positions, and when the lateral operating shaft is at any of the above two positions, the elastic member acts on the lateral operating shaft to stabilize it at this position. The lateral operating device has clear indications and high operational safety; the lateral operating shaft is directly connected to the operating mechanism, with good transmission efficiency, high operational reliability, simple overall structure, few parts, and low cost; the idle stroke design of the lateral operating shaft and the drive unit during the transmission process, combined with the spring mechanism, realizes human-free operation. However, the lateral operation has an idle stroke, which causes the lateral operation to fail to correctly indicate the switch closing and opening states, so the patent discloses a lateral operating structure, but the lateral operating part needs to protrude from the housing as a whole, increasing the overall width of the switch. Summary of the invention

[0004] The purpose of the utility model is to provide an operating mechanism for controlling the closing and opening of switch contacts. An electric operating device can be installed on the side to drive the operating mechanism, or contact modules can be installed on the left and right sides, that is, installed in the middle of the mechanism, which can achieve rapid closing and opening and reduce arc erosion of contacts.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An operating mechanism for controlling the closing and opening of switch contacts, comprising a housing, couplings arranged on both sides of the housing, a rotating shaft assembly rotatably arranged in the housing and used for transmission connection of the couplings on both sides, a spring assembly arranged between the rotating shaft assembly and the housing, and an electric operating device;

[0007] Of the couplings on both sides, one is used as the power input side for transmission connection with the electric operating device, and the other is used as the output side of the operating mechanism;

[0008] One end of the spring assembly is in contact with the rotating shaft assembly, and the other end is rotatably connected to the housing;

[0009] The rotating shaft assembly includes a linkage shaft, a lever sheet coaxially arranged to rotate with the linkage shaft, a first support shaft eccentrically arranged on the lever sheet relative to the linkage shaft, and a driving plate symmetrically arranged on both sides of the linkage shaft and drivingly connected to the coupling member on the adjacent side;

[0010] The rotating shaft assembly is elastically abutted against the spring assembly via the first supporting shaft;

[0011] The lever piece is symmetrically arranged on both sides of the linkage shaft; the two ends of the first support shaft extend out of the lever piece to form an extended end; an idle stroke groove is opened on the outer edge of the driving plate, and the extended end is rotatably arranged in the idle stroke groove, so that

[0012] When the electric operating device drives the driving plate on this side to rotate through the coupling on the power input side, it abuts against the protruding end through the side wall of the idle travel groove, thereby driving the lever pieces on both sides to rotate. During this process, the spring assembly is compressed. After the protruding end rotates until the direction of the elastic force of the spring assembly passes over the linkage shaft, the elastic potential energy of the spring assembly is released and pushes the lever piece to rotate. When the protruding end on the other side moves in the idle travel groove on this side to abut against the side wall, it drives the coupling on this side to output a rotational effect.

[0013] Furthermore, the linkage shaft comprises a shaft body with a polygonal cross section, and the lever sheet is provided with a through hole adapted to the shape of the shaft body; the lever sheet rotates synchronously with the linkage shaft through the corresponding hole slot or through hole.

[0014] Furthermore, the linkage shaft also includes a circular shaft arranged at one end of the shaft body, and a circular hole matched with the circular shaft is opened on one side of the coupling, and the circular shaft and the circular hole rotate relative to each other.

[0015] Furthermore, a synchronous rotating platform is provided on one side of the coupling, and the synchronous rotating platform includes an annular platform sleeved outside the circular hole, and a plurality of outer bosses spaced apart on the outer edge of the annular platform;

[0016] The driving plate is provided with a synchronous rotation hole adapted to the shape of the synchronous rotation platform;

[0017] The driving plate and the coupling member realize synchronous rotation with the synchronous rotation platform through the synchronous rotation hole.

[0018] Furthermore, the lever sheet is provided with a hole for the first supporting shaft to pass through.

[0019] Furthermore, a lever piece limit platform is provided on the lever piece; a first V-shaped limit platform is provided in the housing;

[0020] The bottom side of the lever piece limiting platform can be abutted against the two sides of the first V-shaped limiting platform in turn during the rotation process, so that the rotation is limited within the housing.

[0021] Furthermore, a pair of limiting bosses are symmetrically arranged on the center of the driving plate; and a pair of second V-shaped limiting bosses are arranged opposite to each other in the housing;

[0022] The drive plate can be pushed by the extended end to abut against the second V-shaped limit platform during the rotation process to cause the circuit breaker to close. At this time, one end of the idle travel groove abuts against the extended end, and the other end is located on the connecting line between the rotating connection end of the spring assembly and the linkage shaft.

[0023] Furthermore, the lever sheet is provided with a gear transmission surface;

[0024] The operating mechanism also includes a top operating wheel extending out of the housing, and a transmission assembly for transmission connecting the top operating wheel and the lever sheet;

[0025] The transmission assembly includes a slider which is laterally slidably arranged in the housing, a rack arranged at the bottom of the slider, and a toothed groove arranged on the slider;

[0026] The top operating wheel is rotatably mounted on the slider, and a gear is provided at the bottom. The gear meshes with the toothed groove, and the rack meshes with the gear transmission surface, so that

[0027] When the top operating wheel is rotated, the slider is driven to move laterally through the gear and the toothed groove, and then the lever piece is driven to rotate through the rack and the gear transmission surface.

[0028] The couplings on both sides of the mechanism can be installed with contact modules, and bilateral manual operation and control can be performed through the top operating wheel; or an electric operating device can be installed on one side and a contact module on the other side, and electric control can be performed through manual operation of the top operating wheel or the side electric operating device.

[0029] Further, the spring assembly includes a spring bracket, a spring, a support plate and a second support shaft;

[0030] One end of the spring bracket is a U-shaped frame, and the other end is provided with a U-shaped slot; the U-shaped frame is in contact with the first support shaft;

[0031] The support plate is slidably sleeved on the spring bracket;

[0032] The two ends of the spring are respectively in contact with the bottom of the U-shaped frame and the support plate;

[0033] The second support shaft is in contact with the bottom side of the support plate and is slidably embedded in the U-shaped slot;

[0034] The second supporting shaft is fixed in the shell.

[0035] Furthermore, a bracket is provided in the shell, and the second supporting shaft is mounted on the bracket.

[0036] Compared with the prior art, the utility model has the following beneficial effects:

[0037] The utility model places the idle stroke inside the operating mechanism. When the side is operated electrically, the contacts can still be quickly opened and closed, that is, the contact opening and closing speed is only related to the energy storage structure, which greatly reduces the contact erosion, and the side operating part does not need to protrude from the side shell as a whole.

[0038] The utility model has the advantages of small size, small occupied space, reduced overall width of the switch, simple use of parts, reduced costs, etc., and can be suitable for top manual operation or side electric operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 , Figure 2 This is a structural schematic diagram of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0040] Figure 3 This is an internal schematic diagram of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0041] Figure 4 It is a transmission diagram of the top operating wheel;

[0042] Figure 5 is a schematic diagram of the structure of the spring assembly;

[0043] Figure 6 is a structural schematic diagram of a rotating shaft assembly;

[0044] Figure 7 This is an exploded view of the shaft assembly;

[0045] Figure 8 It is a structural schematic diagram of the driving board;

[0046] Fig. 9 It is a structural schematic diagram of the lever piece;

[0047] Fig.10 is a schematic diagram of the structure of the half shell;

[0048] Fig.11 It is the structural diagram of the linkage shaft;

[0049] Fig.12 It is a structural schematic diagram of the coupling;

[0050] Fig.13 It is a structural schematic diagram of the coupling;

[0051] Fig.14 It is a schematic diagram of the opening state of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0052] Fig.15 It is a schematic diagram of the closing state of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0053] Fig.16 It is a schematic diagram of the opening over-dead point state of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0054] Fig.17 It is a schematic diagram of the closing over-dead point state of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0055] Fig.18 This is the installation diagram of the electric operating device and the contact module;

[0056] Fig.19 This is a schematic diagram of the centering installation of an operating mechanism for controlling the closing and opening of switch contacts of the utility model;

[0057] Among them: 1 is a housing, 2 is a top operating wheel, 3 is a side operating wheel, 4 is a coupling, 5 is a bracket, 6 is a slider assembly, 7 is a spring assembly, 8 is a shaft assembly, 9 is a lever sheet, 12 is a first V-shaped limit platform, 13 is a second V-shaped limit platform, 21 is a gear, 31 is a fourth circumferential limit surface, 32 is a first circular axis surface, 41 is a third circumferential limit surface, 42 is a first circular hole surface, 43 is a contact support, 431 is an electric operating device, 432 is an electric operating drive, 61 is a slider, 62 is Rack, 71 is a spring, 72 is a spring bracket, 73 is a support plate, 74 is a second support shaft, 91 is a hole, 912 is a fifth circumferential limiting surface, 913 is a lever sheet limiting platform, 914 is a gear transmission surface, 92 is a first support shaft, 93 is a drive plate, 931 is a first circumferential limiting surface, 932 is a first driving surface, 933 is a second driving surface, 934 is a first limiting surface, 935 is a second circular hole surface, 94 is a linkage shaft, 941 is a second circumferential limiting surface, and 942 is a second circular axis surface. DETAILED DESCRIPTION

[0058] The following embodiments are implemented based on the above technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0060] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0061] Example

[0062] An operating mechanism for controlling the closing and opening of switch contacts, comprising a housing 1, couplings 4 arranged on both sides of the housing 1, a shaft assembly 8 rotatably arranged in the housing 1 and used for transmission connection with the couplings 4 on both sides, a spring assembly 7 arranged between the shaft assembly 8 and the housing 1, and an electric operating device 431; of the couplings 4 on both sides, one is used as a power input side and is transmission connected to the electric operating device 431, and the other is used as an output side of the operating mechanism; one end of the spring assembly 7 abuts against the shaft assembly 8, and the other end is rotationally connected to the housing 1; the shaft assembly 8 comprises a linkage shaft 94, a lever sheet 9 coaxially rotatably arranged with the linkage shaft 94, a first support shaft 92 eccentrically arranged on the lever sheet 9 relative to the linkage shaft 94, and a drive plate 93 symmetrically arranged on both sides of the linkage shaft 94 and transmission connected to the couplings 4 on the adjacent sides; the shaft The component 8 is elastically abutted against the spring component 7 through the first support shaft 92; the lever piece 9 is symmetrically arranged on both sides of the linkage shaft 94; the two ends of the first support shaft 92 extend out of the lever piece 9 to form a protruding end; an idle stroke groove is opened on the outer edge of the driving plate 93, and the protruding end is rotatably arranged in the idle stroke groove, so that when the electric operation device 431 drives the driving plate 93 on this side to rotate through the coupling 4 on the power input side, it abuts against the protruding end through the side wall of the idle stroke groove, thereby driving the lever pieces 9 on both sides to rotate. In this process, the spring component 7 is compressed. After the protruding end rotates to the direction of the elastic force of the spring component 7 over the linkage shaft 94, the elastic potential energy of the spring component 6 is released and pushes the lever piece 9 to rotate. When the protruding end on the other side moves in the idle stroke groove on this side to abut against the side wall, it drives the coupling 4 on this side to output a rotation effect.

[0063] In this embodiment, the electric operating device 431 is a device that can realize the rotation of the electric drive coupling 4, such as a drive motor and a mounting block provided on the rotation output shaft of the drive motor and connected to the rotation limit of the coupling 4. The rotation limit connection can be achieved by a concave-convex matching structure, for example: Figure 1 As shown, the coupling 4 includes a circular hole and grooves spaced apart from each other at the outer edge of the circular hole. Fig.18 As shown, a truncated platform matching the circular hole is provided on the mounting block, and a boss matching the shape is provided at a corresponding position outside the truncated platform. Through the rotation limiting effect of the boss and the groove, the electric operating device 431 drives the coupling 4 to rotate. More specifically, the driving motor and the mounting block can also be connected through an existing transmission structure, such as gear transmission, synchronous belt transmission, etc.

[0064] In this embodiment, the linkage shaft 94 includes a shaft body with a polygonal cross section, and the lever piece 9 is provided with a through hole adapted to the shape of the shaft body; the lever piece 9 rotates synchronously with the linkage shaft 94 through the corresponding slots or through holes.

[0065] In this embodiment, the linkage shaft 94 further comprises a round shaft arranged at one end of the shaft body, and a round hole matching the round shaft is opened on one side of the coupling member 4, and the round shaft is slidably connected to the round hole.

[0066] In this embodiment, a synchronous rotating table is provided on one side of the coupling 4, and the synchronous rotating table includes an annular table sleeved outside the circular hole, and a plurality of outer bosses spaced apart on the outer edge of the annular table; a synchronous rotating hole adapted to the shape of the synchronous rotating table is opened on the driving plate 93; the driving plate 93 and the coupling 4 realize synchronous rotation with the synchronous rotating table through the synchronous rotating hole.

[0067] In this embodiment, the lever sheet 9 is provided with a hole 91 for the first support shaft 92 to pass through.

[0068] In this embodiment, a lever piece limit platform is provided on the lever piece 9; a first V-shaped limit platform 12 is provided in the shell; the bottom side of the lever piece limit platform can successively abut against the two sides of the first V-shaped limit platform 12 during the rotation process, so that the rotation is limited in the shell 1.

[0069] In this embodiment, a pair of limit bosses are symmetrically provided on the center of the drive plate 93; a pair of second V-shaped limit platforms 13 are relatively provided in the shell; the drive plate 93 can be pushed by the extended end to abut against the second V-shaped limit platform 13 during the rotation process to cause the circuit breaker to close, and at this time, one end of the idle travel groove abuts against the extended end, and the other end is located on the connecting line between the rotating connection end of the spring assembly 7 and the linkage shaft 94.

[0070] In this embodiment, a gear transmission surface 914 is provided on the lever piece 9; the operating mechanism also includes a top operating wheel 2 extending out of the shell 1, and a transmission assembly that transmits and connects the top operating wheel 2 and the lever piece 9; the transmission assembly includes a slider 61 that is laterally slidably arranged in the shell 1, a rack 62 arranged at the bottom of the slider 61, and a toothed groove arranged on the slider 61; the top operating wheel 2 is rotatably arranged on the slider 61, and a gear 21 is provided at the bottom, the gear 21 is meshed with the toothed groove, and the rack 62 is meshed with the gear transmission surface 914, so that when the top operating wheel 2 is rotated, the slider 61 is driven to move laterally through the gear 21 and the toothed groove, and then the lever piece 9 is driven to rotate through the rack 62 and the gear transmission surface 914.

[0071] In this embodiment, the spring assembly 7 includes a spring bracket 72, a spring 71, a support plate 73 and a second support shaft 74; one end of the spring bracket 72 is a U-shaped frame, and the other end is provided with a U-shaped slot; the U-shaped frame abuts against the first support shaft 92; the support plate 73 is slidably mounted on the spring bracket 72; the two ends of the spring 71 abut against the bottom of the U-shaped frame and the support plate 73 respectively; the second support shaft 74 abuts against the bottom side of the support plate 73 and is slidably embedded in the U-shaped slot; the second support shaft 74 is fixedly arranged in the shell 1.

[0072] In this embodiment, a bracket 5 is further disposed in the housing 1 , and the second supporting shaft 74 is mounted on the bracket 5 .

[0073] Working principle:

[0074] like Figure 1 and Figure 2 As shown, the operating mechanism is integrally arranged in two housings 1, the top operating wheel 2 protruding from the top is used for manual operation, and there are couplings 4 on both sides that do not protrude from the housing 1, which are used to connect the contact module or electric operating device 431 of the switch, and the coupling 4 rotates together with the contact support (43).

[0075] like Figure 3 As shown, the top operating wheel 2 is rotatable; the slider assembly 6 is arranged in the shell 1 and can slide in the front-to-back direction, the bracket 5 is fixedly installed in the shell 1 and arranged in pairs in the front-to-back direction; the shaft assembly 8 is rotatably arranged in the shell 1, and its rotating axis is coaxial with the coupling 4, and a spring assembly 7 is also arranged in pairs in the front-to-back direction, one end of which abuts on the bracket 5 and the other end abuts on the shaft assembly 8.

[0076] like Figure 3 and Figure 4 As shown, the gear 21 is fixed below the top operating wheel 2, and the slider assembly 6 is formed by a slider 61 and a rack 62 fixedly connected. When the top operating wheel 2 rotates, the gear 21 can drive the slider 61 to slide back and forth.

[0077] like Figure 5 As shown, the spring assembly 7 is composed of a spring 71, a spring bracket 5, a support plate 73, and a second support shaft 74. The spring 71 is sleeved in the spring bracket 5 arranged in pairs, one end of the spring 71 abuts against the spring bracket 5, and the other end abuts against the support plate 73. The support plate 73 abuts against the second support shaft 74.

[0078] like Figure 6 As shown, the spring bracket 5 abuts against the first support shaft 92, and the second support shaft 74 abuts against the bracket 5; the lever 9 and the drive plate 93 are arranged in pairs in the left and right directions on the linkage shaft 94 to form a rotating shaft assembly 8, and the drive plate 93 is located outside the lever 9.

[0079] like Figure 8 As shown, the driving plate 93 is provided with a second circular hole surface 935 and a first circumferential limiting surface 931 on the inner side of the circumference, and a first driving surface 932, a second driving surface 933 and a first limiting surface 934 are provided on the outer side of the circumference, and the three are arranged symmetrically on the circumference.

[0080] like Fig. 9 As shown, a fifth circumferential limiting surface 912 is provided inside the lever 9, two holes 91 are symmetrically arranged on the circumference, and a gear transmission surface 914 is provided on one side of the side perpendicular to the hole 91, and a lever piece limiting platform 913 is provided on the other side; Figure 3 As shown, the rack 62 cooperates with the gear transmission surface 914, and the sliding of the rack 62 drives the lever 9 to rotate.

[0081] like Fig.10As shown, a first V-shaped limit platform 12 and a second V-shaped limit platform 13 are provided in the housing 1 .

[0082] like Fig.11 As shown, the linkage shaft 94 is provided with a second circumferential limiting surface 941 in the circumferential direction, and second circular shaft surfaces 942 are provided at both side ends.

[0083] like Fig.12 As shown, a raised third circumferential limiting surface 41 is provided at one end of the coupling 4, and a first circular hole surface 42 is provided on the inner side of the circumference.

[0084] like Figure 7 As shown, the fifth circumferential limiting surfaces 912 of the two levers 9 cooperate with the second circumferential limiting surface 941 of the linkage shaft 94, and the two rotate together.

[0085] like Figure 7 As shown, the third circumferential limiting surface 41 of the coupling 4 cooperates with the first circumferential limiting surface 931 of the driving plate 93, and the two rotate together.

[0086] like Figure 7 As shown, the first circular hole surfaces 42 of the coupling members 4 at both sides cooperate with the second circular shaft surfaces 942 at both ends of the linkage shaft 94, and the two rotate relative to each other.

[0087] like Figure 6 and Figure 7 As shown, the first support shaft 92 matches with the hole 91 of the lever 9 , and the length of the first support shaft 92 is longer than the two side surfaces of the two levers 9 .

[0088] like Fig.18 and 19 As shown, the operating mechanism of the present scheme can install contact modules on both sides or install several contact modules on one side and install an electric operating device 431 on the other side, wherein the contact support 43 of the contact module is linked with the coupling 4, and the electric operating drive 432 of the electric operating device 431 can operate the coupling 4 to rotate, thereby driving the operating mechanism.

[0089] like Fig.13 The figure shows the mechanism in the open state, the lever plate limit platform 913 of the lever 9 is in contact with the first V-shaped limit platform 12 in the shell 1, and the second driving surface 933 of the drive plate 93 is in contact with the first support shaft 92; the top operating wheel 2 is manually operated to close the switch, and the top operating wheel 2 rotates to drive the slider assembly 6 to slide to the left, and the slider assembly 6 drives the lever 9 to rotate counterclockwise, and the first support shaft 92 rotates around the rotation axis of the rotating shaft assembly 8. The first support shaft 92 abuts against the second driving surface 933 of the drive plate 93, driving the drive plate 93 to rotate counterclockwise together, and compresses the spring to store energy. When the mechanism passes the dead point, the spring releases energy to drive the first support shaft 92 and the drive plate 93 to close the switch quickly.

[0090] like Fig.14The figure shows the mechanism in the closed state, the first limit surface 934 of the drive plate 93 abuts against the second V-shaped limit platform 13 of the shell 1, and the second drive surface 933 abuts against the first support shaft 92, so that the contacts can be reliably closed. The top operating wheel 2 is manually operated to open the gate, and the top operating wheel 2 rotates to drive the slider assembly 6 to slide to the right, and the slider assembly 6 drives the lever 9 to rotate clockwise, and the first support shaft 92 rotates around the rotating axis of the shaft assembly 8 and compresses the spring to store energy. At this time, the first support shaft 92 and the drive plate 93 are not linked, that is, there is an empty stroke between the first support shaft 92 and the drive plate 93, until the mechanism passes the dead point, the first support shaft 92 abuts against the first drive surface 932 of the drive plate 93, and the drive plate 93 drives the moving contact to quickly open the gate and increase the opening distance, as shown in FIG. Fig.15 The figure shows the mechanism in the dead point position. After the lever 9 is opened, the lever plate limit platform 913 abuts against the first V-shaped limit platform 12 of the housing 1, and the lever 9 and the first support shaft 92 no longer rotate. At this time, the drive plate 93 will continue to rotate clockwise due to inertia until the second drive surface 933 abuts against the first support shaft 92.

[0091] like Fig.16 The figure shows the state of the mechanism closing past the dead point when the electric operating device 431 is used to operate the left coupling 4. The left coupling 4 driven by the electric operating device 431 rotates, and the left driving plate 93 rotates together with the left coupling 4. The first driving surface 932 of the driving plate 93 drives the first support shaft to rotate until the mechanism passes the dead point. The spring assembly 7 drives the right driving plate 93 and the coupling 4 and the contacts to close. Since there is an idle stroke between the first driving surface 932 and the second driving surface 933, the action of the electric operating device 431 driving the mechanism after passing the dead point has nothing to do with the rotation speed of the electric operating device 431, but is only related to the spring force of the spring assembly 7, so that rapid closing regardless of external force can be achieved.

[0092] like Fig.17 The figure shows the state of the mechanism opening after passing the dead point when the electric operating device 431 is used to operate the left coupling 4. The left coupling 4 driven by the electric operating device 431 rotates, and the left driving plate 93 rotates together with the left coupling 4. At this time, the right driving plate 93 is still in the closed state until the second driving surface 933 of the driving plate 93 drives the first support shaft to rotate until the mechanism passes the dead point. The spring assembly 7 drives the right driving plate 93 and the coupling 4 and the contacts to open. Since there is an idle stroke between the first driving surface 932 and the second driving surface 933, the action of the electric operating device 431 driving the mechanism after passing the dead point has nothing to do with the rotation speed of the electric operating device 431, but is only related to the spring force of the spring assembly 7, so that rapid opening regardless of external force can be achieved.

[0093] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. An operating mechanism for controlling the closing and opening of switch contacts, characterized in that: It comprises a housing (1), coupling members (4) arranged on both sides of the housing (1), a rotating shaft assembly (8) rotatably arranged in the housing (1) and used for transmission connection with the coupling members (4) on both sides, a spring assembly (7) arranged between the rotating shaft assembly (8) and the housing (1), and an electric operating device (431); Of the couplings (4) on both sides, one is used as a power input side for transmission connection with the electric operating device (431), and the other is used as an output side of the operating mechanism; One end of the spring assembly (7) is in contact with the rotating shaft assembly (8), and the other end is rotatably connected to the housing (1); The rotating shaft assembly (8) comprises a linkage shaft (94), a lever sheet (9) coaxially rotatably arranged with the linkage shaft (94), a first support shaft (92) eccentrically arranged on the lever sheet (9) relative to the linkage shaft (94), and a drive plate (93) symmetrically arranged on both sides of the linkage shaft (94) and drivingly connected to the coupling member (4) on the adjacent side; The rotating shaft assembly (8) is elastically abutted against the spring assembly (7) via the first supporting shaft (92); The lever sheet (9) is symmetrically arranged on both sides of the linkage shaft (94); both ends of the first support shaft (92) extend out of the lever sheet (9) to form an extended end; an idle stroke groove is formed on the outer edge of the drive plate (93), and the extended end is rotatably arranged in the idle stroke groove so that When the electric operating device (431) drives the driving plate (93) on this side to rotate through the coupling (4) on the power input side, the side wall of the idle stroke groove abuts against the extended end, thereby driving the lever plates (9) on both sides to rotate. During this process, the spring assembly (7) is compressed. After the extended end rotates until the direction of the elastic force of the spring assembly (7) passes over the linkage shaft (94), the elastic potential energy of the spring assembly (7) is released and drives the lever plate (9) to rotate. When the extended end on the other side moves in the idle stroke groove on this side until it abuts against the side wall, it drives the coupling (4) on this side to output a rotational action.

2. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: The linkage shaft (94) comprises a shaft body with a polygonal cross section, and the lever sheet (9) is provided with a through hole adapted to the shape of the shaft body; the lever sheet (9) rotates synchronously with the linkage shaft (94) through the corresponding hole slot or through hole.

3. The operating mechanism for controlling the closing and opening of switch contacts according to claim 2, characterized in that: The linkage shaft (94) further comprises a circular shaft arranged at one end of the shaft body, and a circular hole matching the circular shaft is opened on one side of the coupling member (4), and the circular shaft and the circular hole rotate relative to each other.

4. The operating mechanism for controlling the closing and opening of switch contacts according to claim 3, characterized in that: A synchronous rotating platform is provided on one side of the coupling (4), and the synchronous rotating platform comprises an annular platform sleeved outside the circular hole, and a plurality of external bosses spaced apart on the outer edge of the annular platform; The driving plate (93) is provided with a synchronous rotation hole that matches the shape of the synchronous rotation platform; The driving plate (93) and the coupling member (4) achieve synchronous rotation with the synchronous rotation platform via the synchronous rotation hole.

5. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: The lever sheet (9) is provided with a hole (91) for the first support shaft (92) to pass through.

6. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: The lever sheet (9) is provided with a lever sheet limit platform; the housing is provided with a first V-shaped limit platform (12); The bottom side of the lever piece limit platform can successively abut against two sides of the first V-shaped limit platform (12) during the rotation process, thereby limiting the rotation within the housing (1).

7. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: A pair of limiting bosses are symmetrically arranged on the center of the driving plate (93); and a pair of second V-shaped limiting bosses (13) are arranged opposite to each other in the housing. The drive plate (93) can be pushed by the extended end to abut against the second V-shaped limit platform (13) during the rotation process to close the circuit breaker, at which time one end of the idle travel groove abuts against the extended end and the other end is located on the line connecting the rotating connection end of the spring assembly (7) and the linkage shaft (94).

8. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: The lever sheet (9) is provided with a gear transmission surface (914); The operating mechanism further comprises a top operating wheel (2) extending outside the housing (1), and a transmission assembly for transmission-connecting the top operating wheel (2) and the lever sheet (9); The transmission assembly comprises a slider (61) slidably disposed in a transverse direction in the housing (1), a rack (62) disposed at the bottom of the slider (61), and a toothed groove disposed on the slider (61); The top operating wheel (2) is rotatably mounted on the slider (61), and a gear (21) is provided at the bottom. The gear (21) meshes with the toothed groove, and the rack (62) meshes with the gear transmission surface (914), so that When the top operating wheel (2) is rotated, the slider (61) is driven to move laterally through the gear (21) and the toothed groove, and the lever sheet (9) is then driven to rotate through the rack (62) and the gear transmission surface (914).

9. The operating mechanism for controlling the closing and opening of switch contacts according to claim 1, characterized in that: The spring assembly (7) comprises a spring bracket (72), a spring (71), a support plate (73) and a second support shaft (74); One end of the spring bracket (72) is a U-shaped frame, and the other end is provided with a U-shaped slot; the U-shaped frame is in contact with the first support shaft (92); The support plate (73) is slidably mounted on the spring bracket (72); The two ends of the spring (71) are respectively in contact with the bottom of the U-shaped frame and the support plate (73); The second support shaft (74) is in contact with the bottom side of the support plate (73) and is slidably embedded in the U-shaped slot; The second support shaft (74) is fixedly arranged in the housing (1).

10. The operating mechanism for controlling the closing and opening of switch contacts according to claim 9, characterized in that: A bracket (5) is provided in the housing (1), and the second support shaft (74) is mounted on the bracket (5).

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