A dual power supply switch

Abstract

The invention discloses a dual power conversion switch, wherein the switch-on and switch-off assembly comprises an input swing frame, two groups of output swing frames, a guide frame, a conduction rod and a connecting rod, wherein the input swing frame is sleeved on the input shaft for synchronous rotation, and two groups of conduction rods are respectively hinged on both sides of the input swing frame; a waist-shaped hole is arranged on the conduction rod along its length direction, and a guide shaft that can slide is passed through the waist-shaped hole, and the guide frame and the connecting rod are respectively rotatably connected at the guide shaft, and one end of the guide frame is rotatably arranged on the mounting frame, so that the motion trajectory of the guide shaft is limited to an arc around the rotation axis of the guide frame, the connecting rod is hinged on the swing frame, and the swing frame is sleeved on the output shaft for synchronous rotation, and an elastic member is also arranged between the two swing frames; the clamping member and the abutment frame of the trip assembly move in different axial directions to reduce space occupation. The invention generates a differential state during the switch-on and switch-off process, so that the contact on one side does not drive the action of the other side when closing and opening, and the structures do not affect or interfere with each other.

Description

Technical Field

[0001] The invention relates to the field of electrical switches, and in particular to a dual power conversion switch. Background Art

[0002] The dual power conversion switch has two switches, a normal switch and a standby switch, which are connected to the operating mechanism through the input shaft. The operating mechanism drives the rotating shaft to rotate through the normal and standby electromagnetic coils to close and open the two circuits, or it can be manually switched through the handle. The rotating shaft is connected to the output shafts on the normal side and the standby side through the opening and closing components. The output shaft is connected to the specific moving contact to open and close with the static contact. The opening and closing assembly performs two-way switching actions through a connecting rod assembly or a gear assembly. It must ensure the linkage function of the two routes and ensure that the two power interlocks are not connected at the same time. When one route is opened and closed, it must not affect the existing state of the other contact, thereby achieving orderly opening and closing of the two moving and static contacts; on the other hand, the locking state is generally achieved by the movement of the card to jam a component in the opening and closing assembly, thereby achieving a limiting effect. When opening, in order to make the card move in the opposite direction to trip, the tripping mechanism usually uses a movement method in the same direction as the card to drive the card to complete the tripping and opening. In this way, for the layout of the overall mechanism, more space will be occupied by the card and the movement direction of the tripping mechanism, resulting in an increase in the size of the dual power conversion switch. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a dual power conversion switch, so that the composite connecting rod structure can generate a differential state in the opening and closing process while ensuring the linkage of the common side and the standby side, thereby ensuring the opening efficiency of the moving contact, and the closing process of the moving contact and the static contact remains orderly and stable, and the closing and opening of one side does not drive the action of the other side; the clamping parts and the contact frame of the trip assembly are arranged to perform different axial movements, thereby reducing the continuous arrangement of the structure in one direction, thereby reducing the width required for the mechanism arrangement, reducing the overall volume occupancy, making the product volume more compact, and optimizing the structural layout.

[0004] The present invention adopts the following technical scheme: a dual power conversion switch, including a mounting frame, an operating mechanism and a contact assembly arranged on the mounting frame, the operating mechanism including an input shaft, a common side output shaft, a standby side output shaft, a switch-on and switch-off assembly and a trip assembly, the mounting frame is rotatably provided with an input shaft, a common side output shaft and a standby side output shaft, the input shaft is respectively connected with the common side output shaft and the standby side output shaft through the switch-on and switch-off assembly, the contact assembly includes a plurality of groups of moving contacts and static contacts respectively arranged on the common side and the standby side, the common side output shaft is connected with the switch-on and switch-off assembly The moving contact on the common side is connected to the static contact on the common side for opening and closing operations, and the output shaft on the standby side is connected to the moving contact on the standby side for opening and closing operations with the static contact on the standby side. The opening and closing assembly includes a set of input swing frames, output swing frames on both the common side and the standby side, guide frames, conduction rods and connecting rods. The input swing frame is sleeved on the input shaft for synchronous rotation, and the two sides of the input swing frame are respectively hinged to the conduction rods on the common side and the standby side; a waist-shaped hole is provided on the conduction rod along its length direction, and a guide shaft that can slide is passed through the waist-shaped hole. The guide shaft The guide frame and the connecting rod are rotatably connected at the ends, and one end of the guide frame is rotatably arranged on the mounting frame, so that the motion trajectory of the guide shaft is limited to an arc around the rotation axis of the guide frame, and the connecting rod is hinged to the output swing frame, and the output swing frames on the common side and the spare side are respectively sleeved on the common side output shaft and the spare side output shaft for synchronous rotation; a first elastic member is also arranged between the output swing frames on the common side and the spare side, so that when one side moves, an elastic force is applied to the other side; the tripping assembly includes a card block and an abutment frame, and the input swing frame is provided with a blocking arm toward the card block, and the blocking arm Grooves are provided on both sides of the arm, and the card block is connected to the second elastic member so that the card block has a tendency to move toward the input swing frame, and when the blocking arm contacts the card block, the dual power conversion switch is in an open state; when the blocking arm rotates to make the groove correspond to the card block, the card block moves to a limit position in the groove so that the dual power conversion switch is in a closed state; the card block moves in the X-axis direction, and the contact frame moves in the Y-axis direction. An inclined surface is provided on the contact frame, and the inclined surface contacts and cooperates with the card block, and when the contact frame moves in the Y-axis direction, the inclined surface pushes the card block to move in the X-axis direction, thereby driving the card block to leave the groove.

[0005] The beneficial effects of the present invention are as follows: on the one hand, at the opening and closing assembly, through the waist-shaped hole set on the conduction rod on one side, during the movement of the input swing frame, the conduction rod on the side to be closed will be driven to move to the side wall of the waist-shaped hole to interfere with the movement of the guide shaft, and then the action is transmitted to the output shaft through the connecting rod and the output swing frame to complete the closing of this side. The conduction rod on the other side does not interfere with the conduction rod due to the waist-shaped hole, so that the assembly and the output shaft on the other side do not move, and the output swing frames on both sides are connected by the first elastic member, so that when one side rotates to close, an elastic force can be applied to the other side to keep the other side stable, and in the opening and closing process, the conduction rod on the other side will not interfere with the conduction rod due to the waist-shaped hole. When the gate is opened, the elastic force can react on both, promoting the opening of that side and the closing of the other side; and then, the composite connecting rod structure is generally used to ensure the linkage between the common side and the standby side, while generating a differential state in the process of opening and closing. The closing and opening of one side does not drive the action of the other side, thereby ensuring the opening efficiency of the moving contact, and the closing process of the moving contact and the static contact remains orderly and stable; the setting of the guide frame limits the activity trajectory of the guide shaft, which, on the one hand, determines the movement and stay state between the connecting rod structures, and on the other hand, reduces the activity space between the connecting rods, which can reduce the space occupied by the overall activity and optimize the structural layout.

[0006] On the other hand, at the trip assembly, the position limitation of the opening and closing of the two-way switch is realized by the X-axial movement of the card block, which cooperates well with the blocking arm and the groove on the input swing frame. By setting an inclined plane on the contact frame, the Y-axial movement of the contact frame drives the inclined plane to push the X-axial movement of the card block to realize the release of the limit. In addition, through the structural arrangement and displacement in different directions, the continuous arrangement of the structure in one direction is reduced, thereby reducing the width required for the mechanism arrangement, improving the compactness of the structural arrangement, reducing the overall volume occupancy, and making the product volume more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural schematic diagram of the operating mechanism of the dual power conversion switch of the present invention when the switch is opened.

[0008] Figure 2 It is a three-dimensional structural schematic diagram of the operating mechanism of the dual power conversion switch of the present invention when the standby side is closed.

[0009] Figure 3 It is a three-dimensional structural schematic diagram of the operating mechanism of the dual power conversion switch of the present invention when the common side is closed.

[0010] Figure 4 It is a three-dimensional structural schematic diagram of the spare side parts of the opening and closing assembly of the present invention.

[0011] Figure 5 It is a three-dimensional structural schematic diagram of the trip assembly of the present invention with some components removed.

[0012] Figure 6It is a three-dimensional structural schematic diagram of a commonly used side contact assembly of the dual power conversion switch of the present invention.

[0013] Figure 7 It is a three-dimensional structural schematic diagram of the moving contact of the present invention.

[0014] Figure 8 It is a schematic diagram of the longitudinal cross-sectional structure of the moving contact of the present invention. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 , 2, 3, 4, 5, 6, 7, and 8 are specific embodiments of the dual power conversion switch of the present invention.The embodiment includes a mounting frame 0 and an operating mechanism A and a contact assembly B arranged on the mounting frame 0, wherein the operating mechanism A includes an input shaft A1, a common side output shaft A2, a standby side output shaft A3, a switch-opening and closing assembly A4 and a trip assembly 7, wherein the input shaft A1, the common side output shaft A2 and the standby side output shaft A3 are rotatably arranged on the mounting frame 0, wherein the input shaft A1 is respectively connected to the common side output shaft A2 and the standby side output shaft A3 through the switch-opening and closing assembly A4, wherein the contact assembly B includes a plurality of groups of moving contacts B1 and static contacts B0 respectively arranged on the common side and the standby side, wherein the common side output shaft A2 is connected to the moving contact B1 on the common side for switching on and off with the static contact B0 on ​​the common side, and the standby side output shaft A3 is connected to the moving contact B1 on the standby side for switching on and off with the standby side. The opening and closing operation of the side static contact B0, the opening and closing assembly A4 includes a group of input swing frames A40, output swing frames A41, A42, guide frames A411, A421, conduction rods A412, A422 and connecting rods A413, A423 on both the common side and the standby side. The input swing frame A40 is sleeved on the input shaft A1 for synchronous rotation, and the two sides of the input swing frame A40 are respectively hinged to the conduction rods A412, A422 on the common side and the standby side; the conduction rods A412, A422 are provided with waist-shaped holes A414, A424 along their length direction, and the waist-shaped holes A414, A424 are penetrated with guide shafts A415, A425 that can slide, and the guide shafts A415, A425 can be rotatably connected to the guide frames. A411, A421 and connecting rods A413, A423, one end of the guide frame A411, A421 is rotatably arranged on the mounting frame 0, so that the movement trajectory of the guide shaft A415, A425 is limited to an arc around the rotation axis of the guide frame A411, A421, the connecting rods A413, A423 are hinged to the output swing frame A41, A42, the output swing frame A41, A42 on the common side and the standby side are respectively sleeved on the common side output shaft A2 and the standby side output shaft A3 for synchronous rotation; a first elastic member A43 is also arranged between the output swing frame A41, A42 on the common side and the standby side, so that when one side moves, an elastic force is applied to the other side; the tripping assembly 7 includes a block 6 and a resistance frame 71, and the input swing frame A40 is directed toward A blocking arm A401 is provided on the block 6, and grooves A402 are provided on both sides of the blocking arm A401. The block 6 is connected to the second elastic member so that the block 6 has a tendency to move toward the input swing frame A40, and when the blocking arm A401 contacts the block 6, the dual power conversion switch is in an open state; when the blocking arm A401 rotates to make the groove A402 correspond to the block 6, the block 6 moves to the limit position in the groove A402 to make the dual power conversion switch in a closed state; the block 6 moves in the X-axis direction, and the contact frame 71 moves in the Y-axis direction. The contact frame 71 is provided with an inclined surface 711, which contacts and cooperates with the block 6, and when the contact frame 71 moves in the Y-axis direction, the inclined surface 711 pushes the block 6 to move in the X-axis direction, thereby driving the block 6 to leave the groove A402.

[0017] When the present invention is in use, the input shaft A1 is connected to the solenoid valve to drive the input shaft A1 to rotate to rotate the input swing frame A40, thereby closing and opening the two circuits, and the connection handle can also be used for manual switching. The common side output shaft A2 is connected to the common side moving contact B1, and the spare side output shaft A3 is connected to the spare side moving contact B1. When the output shaft rotates, the moving contact B1 is driven to contact with the static contact B0 to close the circuit or to separate from the static contact B0 to open the circuit.

[0018] like Figure 1 The diagram shows the open state, with the connecting rod groups on the common side and the standby side in their initial positions, and the elastic member A43 also maintaining a natural state without being pushed or pulled. Taking the common side as an example, the input swing frame A40, the common side conduction rod A412, the common side connecting rod A413 and the common side output swing frame A41 form a first-layer connecting rod structure, which in principle transmits the action to the common side output swing frame A41 through the swing of the input swing frame A40, thereby driving the swing action of the common side output swing frame A41; on this basis, a common side guide frame A411 is added, so that the common side guide frame A411, the common side connecting rod A413 and the common side output swing frame A41 form a second-layer connecting rod structure, and a waist-shaped hole A414 is added on the common side conduction rod A412, and a common side guide shaft A415 for rotatably connecting the common side guide frame A411 and the common side connecting rod A413 is located in the waist-shaped hole A414.

[0019] Combination Figure 3As shown, when the input swing frame A40 swings and wants to transmit the action to the common side output swing frame A41, the common side conduction rod A412 must first be moved to the side wall on the length direction of the waist-shaped hole A414 to contact the common side guide shaft A415, and then the continued movement can drive the common side guide shaft A415, that is, the action of the second layer of connecting rod finally completes the swing of the common side output swing frame A41 and then drives the common side output shaft A2 to output in place and the overall mechanism is limited to the common side closing state, at this time the common side moving contact B1 rotates and completes the closing with the static contact B0; in the process of closing the common side, the standby side conduction rod A422 on the standby side structure and the waist-shaped hole A424 thereon move in the opposite direction, do not conflict with the standby side guide shaft A425, and make the standby side stay in the initial position; at the same time, the swing of the common side output swing frame A41 pulls the first elastic member A43 to store force, and this force will act on the standby side output swing frame A42 to keep it in the initial position. When it is necessary to open the circuit breaker, the locking state of the whole mechanism can be released by the trip assembly 7. The elastic force released by the first elastic member A43 can drive the output swing frame A41 on the common side and the connecting rods connected thereto to reset to the initial position. The reset process drives the displacement of the common side guide shaft A415 through the common side connecting rod A413 and the waist-shaped hole A414, which can drive the reset of the common side conduction rod A412 and the input swing frame A40. At this time, the common side moving contact B1 and the static contact B0 complete the opening of the circuit breaker. On the standby side, except for the release of the force limit of the first elastic member A43 at the output swing frame A42 on the standby side, the conduction rod A422 on the standby side is driven by the input swing frame A40 to change position to a certain extent, and the others remain in the initial state.

[0020] If you want to close the backup side, you can refer to the closing process of the common side above. The final mechanism status is as follows: Figure 2 The state shown. The upper and lower arrangement positions of the common side and the standby side of the dual power transfer switch in the mounting frame can be defined or interchanged according to custom during manufacturing or use.

[0021] For the design of the opening and closing assembly A4, the input swing frame A40 can drive the common side and the standby side to perform a certain structural linkage, and then the waist-shaped hole on the transmission rod is matched with the design of the guide shaft to make the common side and the standby side produce a differential effect, and the closing and opening of one side does not drive the movement of the other side, reducing the mutual restriction of the structures on both sides during opening, ensuring the opening efficiency, and keeping the closing process orderly and stable. The first elastic member A43 is used to connect the swing frames on both sides, so that when one side rotates to close, it can apply elastic force to the other side to keep the other side stable. When opening, the first elastic member A43 can react to both, promoting the opening of this side and the release of the limit on the other side to close. The setting of the guide frame limits the activity trajectory of the guide shaft. On the one hand, it determines the movement and stop state between the connecting rod structures, and improves the strength and stability of the connecting rod structure. On the other hand, it reduces the activity space between the connecting rods, just like the transmission rod has the activity state of swinging and relative displacement, which can reduce the space occupied by the overall activity and optimize the structural layout.

[0022] For the design of the trip assembly 7, Figure 1 The figure shows the open state, the blocking arm A401 pushes the block 6 to the outside, the block 6 is connected to the second elastic member (not shown in the figure), the second elastic member can be a spring, torsion spring, tension spring or other force storage member that resists the block 6, and the second elastic member accumulates elastic force to push the block 6 to the blocking arm A401; Figure 2 As shown, when closing the switch, the input swing frame 40 rotates to drive the blocking arm A401 to rotate downward, so that the upper groove A402 gradually corresponds to the block 6. When the input swing frame 40 rotates to the right, the block 6 is driven by the elastic force of the second elastic member to move to the left into the groove A402 to complete the limit. The input swing frame 40 cannot rotate, so that the closing of the switch is stable. When it is necessary to release the block 6 and the groove A402, the contact frame 71 is driven to move downward, and the inclined surface 711 on the contact frame 71 gradually pushes the block 6 to the right until most of the block 6 leaves the groove A402. The input swing frame 40 can open the switch by the restoring force, and the block 6 is limited by the blocking arm A401 again, or the input swing frame 40 continues to rotate to close the switch on the other side. Such an arrangement allows the block 6 to move along the X-axis direction, and the abutment frame 71 to move along the Y-axis direction. The two can be staggered in the spatial structure, and only the inclined surface 711 is used to contact the block 6, so that the space occupied by the two is reduced, which can improve the compactness of the structural layout, reduce the overall volume occupancy, and make the product volume more compact; on the other hand, the two groups of connecting rod groups and the release assembly are arranged in two layout areas, which is also convenient for their respective movement and disassembly and debugging.

[0023] As an improved specific implementation method, a waist-shaped arrangement hole 712 is opened on the contact frame 71, and an arrangement column 02 is arranged on the mounting frame 0. The arrangement column 02 is accommodated in the waist-shaped arrangement hole 712, and the arrangement column 02 and the waist-shaped arrangement hole 712 cooperate to keep the contact frame 71 in Y-axis movement and limit the movement limit position; the tripping assembly 7 also includes an electromagnetic coil 72, which is arranged on the side of the contact frame 71 and connected to the contact frame 71 through an attraction shaft 73, and a spring 74 is also sleeved on the attraction shaft 73. When the electromagnetic coil 72 is energized, the attraction shaft 73 is driven to move, driving the contact frame 71 to move in the Y-axis direction and thereby driving the block 6 to leave the groove A402, and the spring 74 provides a restoring force for the contact frame 71 to reset.

[0024] like Figure 1 , 2 As shown in Figures 3, 5, the width of the waist-shaped arrangement hole 712 is adapted to the arrangement column 02, and the length is arranged vertically, so as to guide and limit the Y-axis movement of the contact frame 71. The upper and lower ends of the arrangement column 02 contact the waist-shaped arrangement hole 712 to limit the upper and lower ends of the contact frame 71, ensuring that the contact frame 71 is arranged and moved in an orderly manner within the range, and the initial position can be well defined, so that the contact frame 71 returns to the initial position well after completing the tripping action. Preferably, a group of waist-shaped arrangement holes 712 are respectively arranged at the upper and lower positions of the contact frame 71 to cooperate with the arrangement column 02 to improve the stability of the structural restrictions. The electromagnetic coil 72 and the suction shaft 73 can be installed and arranged in an orderly manner on the side to adapt to the arrangement of the contact frame 71. The X-axial space they occupy is relatively small, and they can be well arranged with sufficient space in the Y-axial direction. They extend to the side of the contact frame 71 and are connected to the suction shaft 73. The above structure can be used to realize the electric drive of the contact frame 71 to complete the tripping. After the tripping is completed, the electromagnetic coil 72 is powered off, and the spring 74 can push the suction shaft 73 and the contact frame 71 to reset upward, ensuring that the structure stays in the initial position in an orderly manner.

[0025] As an improved specific implementation method, the block 6 is a cylindrical body, which is rotatably set on a rotating shaft 62, and the rotating shaft 62 is set on a rotating frame 61. The rotating frame 61 is set on the mounting frame 0 through an arrangement column 02. The rotation of the rotating frame 61 drives the block 6 to swing in the X-axis direction.

[0026] like Figure 1 , 2As shown in FIGS. 3 and 5, the block 6 is arranged by a rotating shaft 62. Relying on the structure of its cylindrical body, it can roll with the contacting blocking arm A401, the inner wall of the groove A402 and the inclined surface 711 when moving its position, reducing the wear between the structures, and adjusting the movement more smoothly to avoid the tripping and jamming. The rotating frame 61 can use a layout column 02 as the center of the circle to make the block 6 swing along the X-axis. The rotating frame 61 acts as a swing arm, and the space occupied by the movement of the block 6 is small, and the layout is convenient; preferably, the layout column 02 matched with the lower part of the abutment frame 71 can be the same as the layout column 02 of the rotating frame 61, so that the structure is arranged more compactly and the space occupied by the components is reduced.

[0027] As an improved specific implementation method, the rotating shaft 62 is also rotatably connected to the swing member 63, a matching shaft 714 is provided on the contact frame 71, a slide groove 64 is provided on the swing member 63, the matching shaft 714 is passed through the slide groove 64, and when the contact frame 71 and the block 6 are relatively displaced, the swing member 63 swings and the matching shaft 714 slides in the slide groove 64.

[0028] like Figure 1 , 2 As shown in Figures 3 and 5, during the structural arrangement, the swinging member 63 is arranged on the other side relative to the rotating frame 61 to provide structural upper and lower support for the reciprocating movement of the block 6, thereby improving the structural stability of the block 6; through the design of the matching shaft 714 on the abutment frame 71 and the slide groove 64 on the swinging member 63, when the abutment frame 71 and the block 6 produce relative displacement, the matching shaft 714 can slide in the slide groove 64 and cooperate with the swinging of the swinging member 63, so that there is no jamming between the structures, and the overall movement is smooth while ensuring the stability of the structure.

[0029] As an improved specific implementation, a force plate 713 is further provided on the abutment frame 71 , and the force plate 713 and the abutment frame 71 form a vertical state, so that the force plate 713 faces upward or downward for human power to push.

[0030] like Figure 1 , 2 As shown in FIGS. 3 and 5, the specific force plate 713 is arranged at the upper part, and its surface faces upward, so that the button outside the shell can be extended into the shell to contact the force plate 713, thereby pressing the contact frame 71 to perform manual release. According to the different operation modes and the orientation of the component settings, the force plate 713 can face upward or downward to meet different layout and operation requirements.

[0031] As an improved specific implementation method, each group of moving contacts B1 is multiple and arranged on an arrangement frame B2. The arrangement frame B2 opens a number of installation cavities B21 that pass through from front to back. The multiple moving contacts B1 are accommodated in the installation cavities B21 one by one. The front parts of the multiple moving contacts B1 extend out of the installation cavities B21, and the rear parts are limited in the arrangement frame B2 by a mounting shaft B22. A third elastic member B5 is arranged in the installation cavity B21 to resist the moving contact B1, so that the moving contact B1 can float around the mounting shaft B22 and a restoring force is applied by the third elastic member B5.

[0032] like Figure 6 , 7 As shown in Figure 8, in a high-current dual power conversion switch, each switch group will be provided with multiple moving contacts B1 to cooperate with the static contact B0 to open and close the switch, and then rely on multiple moving contacts B1 to facilitate the switch to complete the opening, and the provision of multiple moving contacts B1 increases the difficulty of designing and installing the overall structure. In this embodiment, a number of moving contacts B1 are installed one by one through the front end opening of the installation cavity B21, and the rear through hole of the moving contact B1 corresponds to the through hole on the arrangement frame B2. Then, the installation shaft B22 passes through the through hole, and then the third elastic member B5 is installed from the front end of the installation cavity B21 to resist the moving contact B1 downward, thereby completing the assembly of multiple moving contacts B1 and the arrangement frame B2. The above assembly method has a simple structure, which can effectively reduce the complexity of the structure and reduce the difficulty of assembly and maintenance for the staff; The two ends of the mounting shaft B22 are rotatably installed on the housing of the dual power conversion switch. Rotating with the mounting shaft B22 as the axis can drive the arrangement frame B2 and the moving contact B1 to perform circular motion, thereby realizing the rotational opening and closing of the moving contact B1. When the moving contact B1 contacts and closes the static contact B0, the rotation angle provided by the arrangement frame B2 can make the moving contact B1 more fully pressed toward the static contact B0. Through the compression and force storage of the third elastic member B5, a greater resistance pressure is provided to the moving contact B1, thereby ensuring a more stable closing.

[0033] As an improved specific implementation method, the upper part of the arranging frame B2 is hinged with a connecting frame B3, and the other end of the connecting frame B3 is hinged to a swing frame B4, and the swing frame B4 is connected to the common side output shaft A2 or the spare side output shaft A3; the connecting frame B3 includes a vertical frame B31, a horizontal frame B32, a first rotating shaft B33 and a second rotating shaft B34, the vertical frame B31 is divided into two groups on the left and right, the two groups of vertical frames B31 are connected by two groups of horizontal frames B32, the first rotating shaft B33 is penetrated at the front end of the vertical frame B31 and is also penetrated at the upper part of the arranging frame B2, and the second rotating shaft B34 is penetrated at the rear end of the vertical frame B31 and is also penetrated on the swing frame B4.

[0034] like Figure 6 , 7As shown in Figures 8 and 9, the connecting frame B3 and the swinging frame B4 form a continuous connecting rod structure. After being connected to the output shaft A2 on the common side or the output shaft A3 on the standby side, the opening and closing action can be transmitted to the arrangement frame B2, driving the arrangement frame B2 and the moving contact B1 to complete the opening and closing action. The connecting rod formed by the connecting frame B3 and the swinging frame B4 extends to the rear of the arrangement frame B2, which can well arrange the internal space of the cavity of the dual power conversion switch, complete the reasonable distribution between the structures, and ensure a good activity space for the arrangement frame B2; the connecting frame B3 is hinged at the upper part of the arrangement frame B2, and can provide a good structural constraint at the upper part when closing the switch, so that the position of the arrangement frame B2 is stable after the moving contact B1 is closed, and the arrangement frame B2 is not prone to structural movement when the overall connecting rod does not move. The specific connecting frame B3 arranges the two ends of the front and rear first rotating shaft B33 and the second rotating shaft B34 well through the vertical frames B31 on both sides, and is respectively connected with the arrangement frame B2 and the swing frame B4; two groups of horizontal frames B32 connect the vertical frames B31 on both sides to ensure the structural strength, and form hollowing and material reduction on the whole, which is convenient for assembly with the front and rear arrangement frames B2 and the swing frame B4, and effectively reduces the cost of components.

[0035] As an improved specific implementation manner, the installation cavity B21 and the moving contact B1 are arranged in three parallel groups.

[0036] like Figure 6 , 7 As shown, the three sets of moving contacts B1 commonly used in large current dual power conversion switches are adopted to meet the needs of opening and closing. The three sets of installation cavities B21 are arranged at equal intervals on the arrangement frame B2 to arrange the moving contacts B1 well.

[0037] As an improved specific implementation method, an arc-shaped convex wall B23 is provided under one side of the arranging frame B2 facing the front of the moving contact B1, and an arc-shaped concave wall 03 is provided behind the static contact B0. When the arranging frame B2 and the moving contact B1 move until the moving contact B1 and the static contact B0 contact, the arc-shaped convex wall B23 and the arc-shaped concave wall 03 overlap to block the space behind the moving contact B1 and the static contact B0.

[0038] like Figure 6 , 7As shown in Figure 8, an arc-shaped concave wall 03 is arranged behind the static contact B0 on ​​the mounting frame 0. When the moving contact B1 is closed, the arc-shaped convex wall B23 will move to the arc-shaped concave wall 03 to close the space between the arc-shaped convex wall B23 and the arc-shaped concave wall 03. When the moving contact B1 is opened, the airflow formed at the moving contact B1 and the static contact B0 will be blocked by the arc-shaped convex wall B23 and will not flow backward, so that the airflow will flow forward to the arc extinguishing chamber 04, thereby better guiding the arc into the arc extinguishing chamber 04 to complete the arc extinguishing, and improve the safety of the opening of the dual power conversion switch. Specifically, the arc-shaped convex wall B23 forms an arc with the mounting shaft B22 as the axis, and the movement in the cavity space is a regular circular movement. The arc-shaped concave wall 03 also forms a corresponding curvature, so that the arc-shaped convex wall B23 and the arc-shaped concave wall 03 are well closed when they overlap, blocking the airflow, and there will be no interference problems in the structure.

[0039] As an improved specific implementation, the third elastic member B5 is a spring, a protrusion B51 for limiting one end of the spring is provided on the inner wall of the installation cavity B21, and a limiting groove B52 for limiting the other end of the spring is provided on the moving contact B1.

[0040] like Figure 8 As shown, during assembly, the staff can first clamp the upper end of the spring to the boss B51, and then compress the spring to make the lower end enter the limit groove B52. After the lower end of the spring completely enters the limit groove B52, it can be reset, so that the spring is well limited to the position limited by the boss B51 and the limit groove B52, and will not fall out, and the moving contact B1 is well limited.

[0041] As an improved specific implementation method, an arc hole A44 is provided on the output swing frame A41, A42, and a limiting column 01 is provided on the mounting frame 0 corresponding to the arc hole A44. The swing of the output swing frame A41, A42 causes the arc hole A44 to move relative to the limiting column 01, and the back-and-forth swing limit positions of the output swing frame A41, A42 are limited by the two ends of the arc hole A44 contacting the limiting column 01.

[0042] like Figure 1 , 2As shown in Figures 3 and 4, the limiting column 01 is passed through the arc hole A44, so that the swing limit position of the common side output swing frame A41 and the common side output swing frame A42 is limited, and the common side output swing frame A41 and the common side output swing frame A42 can be better limited to stay in the initial position, and in conjunction with the first elastic member A43, the common side output swing frame A41 and the common side output swing frame A42 can be well limited, and the common side output swing frame A41 and the common side output swing frame A42 can be prevented from rotating arbitrarily when not subjected to external force and mechanism drive; the arc hole A44 is set to achieve the effect of preventing material from being stolen from the common side output swing frame A41 and the common side output swing frame A42, saving raw material costs, and relying on the limiting column 01 to complete the better corresponding installation and positioning of the common side output swing frame A41 and the common side output swing frame A42.

[0043] As an improved specific implementation method, the output swing frame A41, A42 forms outer arms A416, A426 and inner arms A417, A427 on the inner and outer sides respectively, the inner arms A417, A427 are hinged to the connecting rods A413, A423, and the outer arms A416, A426 are connected to the first elastic member A43; the first elastic member A43 is a tension spring, and its end is hooked on the horizontal axis of the outer arms A416, A426.

[0044] like Figure 1 , 2 As shown in , 3, and 4, the first elastic member A43 is connected to the relative outer sides by means of the outer arms A416 and 426, which effectively avoids the possibility of interference between the structures, and facilitates the staff to install the connecting rod structure on the inner side and the first elastic member A43 on the outer side; on the other hand, the outer arm and the inner arm are arranged on both sides of the output swing frame relative to the output shaft, forming a lever structure, which is more conducive to the force stability of the output swing frame structure, and improves the force limit of the common side output swing frame A41 and the common side output swing frame A42 in the closed state. In specific implementation, the outer arm and the inner arm of equal length can be set as shown in the figure to make the weight and the force arm of the structure symmetrical, and the corresponding arc hole A44 is set in the middle position to further make the center of gravity of the structure in the middle state. As a mature component for providing elastic force, the tension spring can be selected and used by the staff according to the needs. A horizontal axis is set on the outer arm, and then the tension spring is hooked. The output swing frame structure on both sides is relatively compact, and the swing displacement is not large, so the tension spring will not loosen. The directly hooked tension spring is relatively easy to install and disassemble, and there is no need to set other more complicated installation structures to limit the tension spring, which can effectively reduce costs.

[0045] As an improved specific implementation method, the input swing frame A40, the output swing frame A41, A42, the guide frame A411, A421, the conduction rod A412, A422 and the connecting rod A413, A423 all have two front and rear sheets A5, and the front and rear sheets A5 are connected into one by a horizontal connecting sheet A51.

[0046] like Figure 1 , 2 , 3, 4, for details, please refer to Figure 4 , each rod is specifically set as two front and rear sheets A5, which provide good penetration and arrangement strength for the axes of the hinge and matching positions; after the two sheets A5 are connected by the connecting sheet A51, they are made to form a firm whole to ensure the structural thickness and structural strength. The two sheets A5 and the connecting sheet A51 are preferably formed as one piece through a bending process to make the overall structural strength consistency better; on the other hand, while ensuring the structural thickness, the middle space is hollowed out, which is convenient for different connecting rods to be set to different thicknesses to complete the staggered penetration connection at the hinge axis, and greatly reduces the cost of materials and the weight of components.

[0047] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A dual power conversion switch, comprising a mounting frame (0) and an operating mechanism (A) and a contact assembly (B) arranged on the mounting frame (0), wherein the operating mechanism (A) comprises an input shaft (A1), a normal side output shaft (A2), a standby side output shaft (A3), a switch-on and switch-off assembly (A4) and a trip assembly (7), wherein the mounting frame (0) is rotatably provided with an input shaft (A1), a normal side output shaft (A2) and a standby side output shaft (A3), wherein the input shaft (A1) and the normal side output shaft (A2) are rotatably arranged with each other. The output shafts (A2) and (A3) on the standby side are respectively connected through an opening and closing assembly (A4), the contact assembly (B) comprises a plurality of groups of moving contacts (B1) and static contacts (B0) respectively arranged on the common side and the standby side, the output shaft (A2) on the common side is connected to the moving contact (B1) on the common side to perform opening and closing operations with the static contact (B0) on the common side, and the output shaft (A3) on the standby side is connected to the moving contact (B1) on the standby side to perform opening and closing operations with the static contact (B0) on the standby side, characterized in that: The switch opening and closing assembly (A4) comprises a group of input swing frames (A40), output swing frames (A41, A42) provided on both the normal side and the standby side, guide frames (A411, A421), conduction rods (A412, A422) and connecting rods (A413, A423); the input swing frame (A40) is sleeved on the input shaft (A1) for synchronous rotation; the conduction rods (A412, A422) on the normal side and the standby side are respectively hinged on both sides of the input swing frame (A40); The conduction rods (A412, A422) are provided with waist-shaped holes (A414, A424) along their length direction, and guide shafts (A415, A425) capable of sliding are passed through the waist-shaped holes (A414, A424). The guide shafts (A415, A425) are rotatably connected to the guide frames (A411, A421) and the connecting rods (A413, A423), respectively. One end of the guide frame (A411, A421) is rotatably arranged on the mounting frame (0), so that the guide shafts (A415, A425) can be rotatably connected to the guide frames (A411, A421) and the connecting rods (A413, A423). 25) is defined as a circular arc around the rotation axis of the guide frame (A411, A421); the connecting rod (A413, A423) is hinged to the output swing frame (A41, A42); the output swing frames (A41, A42) on the common side and the standby side are respectively sleeved on the common side output shaft (A2) and the standby side output shaft (A3) for synchronous rotation; a first elastic member (A43) is also provided between the output swing frames (A41, A42) on the common side and the standby side, so that an elastic force is applied to the other side when one side moves; The trip assembly (7) comprises a card block (6) and a contact frame (71); the input swing frame (A40) is provided with a blocking arm (A401) facing the card block (6); grooves (A402) are provided on both sides of the blocking arm (A401); the card block (6) is connected to a second elastic member so that the card block (6) has a tendency to move toward the input swing frame (A40); when the blocking arm (A401) contacts the card block (6), the dual power conversion switch is in an open state; when the blocking arm (A401) rotates so that the groove (A402) is aligned with the card block (6), the dual power conversion switch is in an open state; When the card block (6) is engaged, the card block (6) is movably engaged in the groove (A402) to limit the position so that the dual power conversion switch is in a closed state; the card block (6) moves in the X-axis direction, and the abutment frame (71) moves in the Y-axis direction. An inclined surface (711) is provided on the abutment frame (71), and the inclined surface (711) abuts against the card block (6). When the abutment frame (71) moves in the Y-axis direction, the inclined surface (711) pushes the card block (6) to move in the X-axis direction, thereby driving the card block (6) to leave the groove (A402).

2. A dual power conversion switch according to claim 1, characterized in that: The contact frame (71) is provided with a waist-shaped arrangement hole (712), and the mounting frame (0) is provided with an arrangement column (02). The waist-shaped arrangement hole (712) accommodates the arrangement column (02), and the arrangement column (02) and the waist-shaped arrangement hole (712) cooperate to keep the contact frame (71) moving in the Y-axis direction and limit the movement limit position; the release assembly (7) also includes an electromagnetic coil (72), the electromagnetic coil (72) is arranged on the side of the contact frame (71) and is connected to the contact frame (71) through an attraction shaft (73), and a spring (74) is also sleeved on the attraction shaft (73). When the electromagnetic coil (72) is energized, it drives the attraction shaft (73) to move and drive the contact frame (71) to move in the Y-axis direction, thereby driving the block (6) to leave the groove (A402), and the spring (74) provides a restoring force for the contact frame (71) to reset.

3. A dual power conversion switch according to claim 1, characterized in that: The clamping block (6) is a columnar body, which is rotatably arranged on a rotating shaft (62). The rotating shaft (62) is arranged on a rotating frame (61). The rotating frame (61) is arranged on the mounting frame (0) through an arrangement column (02). The rotation of the rotating frame (61) drives the clamping block (6) to swing in the X-axis direction.

4. A dual power conversion switch according to claim 3, characterized in that: The rotating shaft (62) is also rotatably connected to a swing member (63). A matching shaft (714) is provided on the abutment frame (71). A slide groove (64) is provided on the swing member (63). The matching shaft (714) is inserted into the slide groove (64). When the abutment frame (71) and the clamping block (6) are relatively displaced, the swing member (63) swings and the matching shaft (714) slides in the slide groove (64).

5. A dual power conversion switch according to any one of claims 1 to 4, characterized in that: Each group of moving contacts (B1) is multiple and arranged on an arrangement frame (B2); the arrangement frame (B2) is provided with a plurality of installation cavities (B21) that pass through from front to back; the multiple moving contacts (B1) are accommodated in the installation cavities (B21) one by one; the front parts of the multiple moving contacts (B1) extend out of the installation cavities (B21); the rear parts are limited in the arrangement frame (B2) by a installation shaft (B22); a third elastic member (B5) is arranged in the installation cavity (B21) to resist the moving contact (B1), so that the moving contact (B1) can float around the installation shaft (B22) and a restoring force is applied by the third elastic member (B5).

6. A dual power conversion switch according to claim 5, characterized in that: The upper part of the arrangement frame (B2) is hinged with a connecting frame (B3), and the other end of the connecting frame (B3) is hinged with a swing frame (B4), and the swing frame (B4) is connected to the output shaft (A2) on the common side or the output shaft (A3) on the standby side; the connecting frame (B3) comprises a vertical frame (B31), a horizontal frame (B32), a first rotating shaft (B33) and a second rotating shaft (B34); the vertical frame (B31) is divided into two groups, the two groups of vertical frames (B31) are connected by two groups of horizontal frames (B32); the first rotating shaft (B33) is arranged at the front end of the vertical frame (B31) and is also arranged at the upper part of the arrangement frame (B2); the second rotating shaft (B34) is arranged at the rear end of the vertical frame (B31) and is also arranged on the swing frame (B4).

7. The dual power conversion switch according to claim 5, characterized in that: An arc-shaped convex wall (B23) is provided below a surface of the arrangement frame (B2) facing the front of the moving contact (B1), and an arc-shaped concave wall (03) is provided behind the stationary contact (B0) of the mounting frame (0); when the arrangement frame (B2) and the moving contact (B1) move until the moving contact (B1) and the stationary contact (B0) are in contact, the arc-shaped convex wall (B23) and the arc-shaped concave wall (03) overlap to block the space behind the moving contact (B1) and the stationary contact (B0).

8. A dual power conversion switch according to any one of claims 1 to 4, characterized in that: The output swing frame (A41, A42) is provided with an arc-shaped hole (A44), and a limiting column (01) is provided on the mounting frame (0) corresponding to the arc-shaped hole (A44). The swing of the output swing frame (A41, A42) causes the arc-shaped hole (A44) to move relative to the limiting column (01), and the back-and-forth swing limit position of the output swing frame (A41, A42) is limited by the two ends of the arc-shaped hole (A44) contacting the limiting column (01).

9. A dual power conversion switch according to any one of claims 1 to 4, characterized in that: The output swing frame (A41, A42) forms an outer arm (A416, A426) and an inner arm (A417, A427) on the inner and outer sides respectively; the inner arm (A417, A427) is hinged to the connecting rod (A413, A423); the outer arm (A416, A426) is connected to the first elastic member (A43); the first elastic member (A43) is a tension spring, and its end is hooked on the horizontal axis of the outer arm (A416, A426).

10. A dual power conversion switch according to any one of claims 1 to 4, characterized in that: The input swing frame (A40), the output swing frame (A41, A42), the guide frame (A411, A421), the conduction rod (A412, A422) and the connecting rod (A413, A423) all have two front and rear sheet bodies (A5), and the front and rear sheet bodies (A5) are connected into one body through a horizontally placed connecting sheet (A51).

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