A dual power supply switch

Abstract

The invention discloses a dual power conversion switch, comprising a shell, a rotating shaft, a moving contact, a handle and an automatic operating device; the shell comprises a shell seat one and a shell seat two which are matched to form a mounting cavity, the handle can be rotatably arranged on the upper part of the shell and linked with the rotating shaft; an upper arc plate and a lower arc plate bent upward are arranged on the upper part of the shell seat one, an arc slideway is formed between the upper arc plate and the lower arc plate, an arc installation groove is formed between the upper arc plate and the shell seat two and on the upper side of the lower arc plate, an arc-shaped avoidance groove is arranged on the inner side of the upper part of the shell seat two, a limit plug and a connecting part are arranged on the handle, the connecting part is plugged with the rotating shaft and the plugging direction is consistent with the direction in which the limit plug is inserted into the arc slideway, a downward arc limit surface is arranged in the arc-shaped avoidance groove, and the arc limit surface resists the connection part downwardly to limit; the dual power conversion switch structure of the invention is optimized, easy to assemble, and the switch performance is stable, and it has good practicality and popularization.

Description

Technical Field

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

[0002] A dual power conversion switch, also known as a dual power automatic switching switch, is a power system device used to automatically or manually switch loads between two power sources (one for normal power and one for backup power) to ensure the continuity and reliability of power supply. It is widely used. The main problems with existing dual power conversion switches are: (1) The handle installation requires a transition connection between the handle and the rotating shaft through an intermediate connecting component, which is relatively complex in structure and leads to inconvenience in assembly operation; (2) The automatic operating device is used to realize the automatic switching control of the dual power conversion switch, which has a large number of components (such as the structure disclosed in patent document CN113593944A), a relatively complex structure, and relatively cumbersome assembly. Summary of the invention

[0003] To this end, an object of the present invention is to provide a dual power conversion switch that is easy to assemble.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a dual power conversion switch, comprising a housing, a rotating shaft, a moving contact, a handle and an automatic operating device; the housing comprises a housing seat 1 and a housing seat 2 which are matched to form a mounting cavity, the rotating shaft can be rotatably arranged in the mounting cavity, the moving contact is mounted on the rotating shaft, the handle can be rotatably arranged on the upper part of the housing and linked with the rotating shaft, and the automatic operating device is used to control the rotation of the rotating shaft; the upper part of the housing seat 1 is provided with an upper arc plate and a lower arc plate bent upward, an arc slideway is formed between the upper arc plate and the lower arc plate, and the automatic operating device is used to control the rotation of the rotating shaft. An arc-shaped installation groove for the handle to be installed is formed between the upper arc plate and the shell seat 2 and on the upper side of the lower arc plate. An arc-shaped avoidance groove corresponding to and connected to the arc-shaped installation groove is provided on the inner side of the upper part of the shell seat 2. The handle has a limit block inserted into the arc-shaped slide and a connecting part extending from the arc-shaped avoidance groove into the installation cavity. The connecting part is plug-fitted with the rotating shaft and the plug-in direction is consistent with the direction in which the limit block is inserted into the arc-shaped slide. A downward arc-shaped limit surface is provided in the arc-shaped avoidance groove, and the arc-shaped limit surface resists the downward limit of the connecting part.

[0006] Preferably, the handle has an arc-shaped supporting surface facing downward and suitable for forming a close fit with the bottom surface of the arc-shaped mounting groove.

[0007] Preferably, the two opposite ends of the arc-shaped avoidance groove are provided with stop blocks for limiting the connection part.

[0008] Preferably, a connecting block is provided on the upper part of the rotating shaft, a connecting socket is provided on the connecting block, a connecting block is provided on the connecting part, the connecting block, the connecting block, the limiting block and the connecting socket are all extended along the width direction of the shell, and when the handle is installed, the limiting block is inserted into the arc slide and the connecting block is inserted into the connecting socket.

[0009] Preferably, abutment surfaces are respectively provided at both ends of the arc-shaped slideway in the rotatable direction of the handle, and when the handle is rotated to the right position, the side surface of the limiting plug abuts against the corresponding abutment surface.

[0010] Preferably, the upper arc plate is provided with a first through hole and a second through hole at intervals in the rotatable direction of the handle, and the limit plug is provided with a first switch state identification area and a second switch state identification area, and when the handle is in the first switch position, the first switch state identification area is opposite to the first through hole, and the upper arc plate blocks the second switch state identification area; when the handle is in the second switch position, the second switch state identification area is opposite to the second through hole, and the upper arc plate blocks the first switch state identification area.

[0011] Preferably, the automatic operating device includes an electromagnetic component, a movable frame, a coiled compression spring and an articulated block; two electromagnetic components are arranged at intervals along the left-right direction, and the same moving iron core is connected between the two electromagnetic components, the movable frame is fixedly connected to the moving iron core, the upper end of the coiled compression spring is connected to the rotating shaft, and the lower end of the coiled compression spring is connected to the articulated block, and the articulated block is rotatably arranged in the installation cavity through a pivot shaft, and the rotation center of the pivot shaft is directly below the rotation center of the rotating shaft, and two driving blocks are arranged at intervals along the left-right direction on the movable frame, and the middle section of the coiled compression spring is between the two driving blocks, and during the rotation of the handle, the coiled compression spring undergoes a morphological change of first compressing to store energy and then stretching to release energy.

[0012] Preferably, a protrusion is provided on the bottom wall of the installation cavity below the pivot shaft, and the lower end of the hinge block has a wedge-shaped structure. The protrusion is a wedge-shaped structure protruding upward and the top end is a circular arc transition; during the rotation of the handle, the lower end of the hinge block contacts the protrusion and slides over the protrusion; the pivot shaft is arranged along the width direction of the shell, and the hinge block is provided with a strip hole that cooperates with the pivot shaft.

[0013] Preferably, one end of the pivot shaft is integrally connected to the shell seat one, and the other end of the pivot shaft is plugged into a positioning socket on the shell seat two.

[0014] Preferably, a first limiting plane is provided on the side of the movable frame facing the shell seat 2, the driving block is provided on the first limiting plane, and a second limiting plane is provided on the shell seat 2 facing the movable frame, the first limiting plane is parallel to the second limiting plane and respectively forms a resistance limit for the spiral compression spring from both sides.

[0015] The present invention has the following positive effects: (1) In the dual power conversion switch of the present invention, the convenience of assembly can be improved through structural optimization. Specifically, when assembling the dual power conversion switch, the limit plug on the handle is inserted into the arc-shaped slide. At the same time, the connection part and the rotating shaft form a plug-in fit during the process of inserting the limit plug into the arc-shaped slide. Moreover, the arc-shaped slide can also limit the limit plug in the up and down directions and then limit the handle, thereby realizing the fast and stable installation of the handle and its linkage connection with the rotating shaft. After the shell seat 1 and the shell seat 2 are matched, the corresponding part of the shell seat 2 forms a lateral block to the handle to prevent the handle from loosening. In this way, the handle can be installed quickly and conveniently. Moreover, the arc-shaped limit surface in the arc-shaped avoidance groove can form a shielding and resistance limit to the connection part from above, thereby ensuring the stability of the handle installation while maintaining the integrity of the shell shape.

[0016] (2) In the dual power conversion switch of the present invention, the structure of the automatic operating device is optimized and designed, and the number of its components is small, the structure is simple, and it is easy to assemble. In actual use, when the automatic operating device is controlled to be energized, the electromagnetic component drives the moving iron core and the moving frame connected thereto to move, and the corresponding driving block applies a forward thrust to the middle section of the helical compression spring, and then the helical compression spring drives the rotating shaft to rotate. As the driving block moves and continuously applies thrust to the middle section of the helical compression spring, the helical compression spring is gradually compressed and stores energy during this process. When the middle section of the helical compression spring passes through the balance point (the balance point is located on the line connecting the rotation center of the rotating shaft and the rotation center of the pivot shaft (i.e. Figure 3 After reaching the dotted line L), the helical compression spring continues to deflect forward and instantly releases the stored energy to drive the rotating shaft to rotate quickly into place, realizing automatic switching of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the specific implementation or the prior art description. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a three-dimensional diagram of the dual power conversion switch in the present invention;

[0019] Figure 2 This is a structural diagram of the dual power conversion switch of the present invention after some components are omitted;

[0020] Figure 3 It is a front view of the interior of the housing seat in the present invention;

[0021] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the structure of the housing seat 1, the rotating shaft and the handle when they are matched in the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the shell seat 2 in the present invention;

[0024] Figure 7 It is a structural schematic diagram of the combined state of the rotating shaft and the handle in the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the present invention in a state where the rotating shaft and the handle are separated;

[0026] Fig. 9 It is a front view of the helical compression spring in the present invention.

[0027] The accompanying drawings shown in the figure are marked as follows: 1. Shell; 10. Protrusion; 11. Shell seat 1; 111. Upper arc plate; 112. Lower arc plate; 113. Arc slide; 114. Arc installation groove; 115. Arc avoidance groove; 1151. Arc limit surface; 116. Stop block; 117. Stop surface; 118. First through hole; 119. Second through hole; 12. Shell seat 2; 13. Pivot shaft; 14. Positioning socket; 15. Second limit plane; 16- Exhaust channel; 17- Arc extinguishing plate; 2. Rotating shaft; 21. Connecting block; 22. Connecting socket; 23. Positioning column A; 3. Moving contact; 4. Handle; 40. Arc support surface; 41. Limit plug; 411. First switch state identification area; 412, second switch state identification area; 42, connecting part; 43, connecting plug; 5, electromagnetic assembly; 51, moving iron core; 6, moving frame; 61, driving block; 62, first limiting plane; 7, spiral compression spring; 71, first positioning section; 72, first elastic section; 73, reinforced connection section; 74, second elastic section; 75, second positioning section; 8, hinge block; 81, strip hole; 82, positioning column B. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples and cannot be used to limit the protection scope of the present invention.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0030] The dual power conversion switch structure of the embodiment of the present invention is as follows Figures 1 to 8 As shown, it includes a shell 1, a rotating shaft 2, a moving contact 3 and a handle 4; the shell 1 includes a shell seat 11 and a shell seat 2 12 which are matched to form a mounting cavity, the rotating shaft 2 is rotatably set in the mounting cavity, the moving contact 3 is installed on the rotating shaft 2, and the handle 4 is rotatably set on the upper part of the shell 1 and linked with the rotating shaft 2. When the control handle 4 is rotated, the rotating shaft 2 is driven to rotate, so that the moving contact 3 contacts with a group of static contacts to connect to the normal power supply. When the control handle 4 rotates in the opposite direction, it drives the rotating shaft 2 to rotate in the opposite direction, so that the moving contact 3 contacts with another group of static contacts to connect to the backup power supply, thereby realizing manual switching of the dual power conversion switch; the static contact is not shown in the figure.

[0031] Further reading Figure 1 , Figure 2 and Figures 5 to 8As shown, the upper portion of the shell seat 11 is provided with an upper arc plate 111 and a lower arc plate 112 that are bent upward, and an arc slide 113 is formed between the upper arc plate 111 and the lower arc plate 112. An arc installation groove 114 for mounting the handle 4 is formed between the upper arc plate 111 and the shell seat 2 12 and on the upper side of the lower arc plate 112. The inner side of the upper portion of the shell seat 2 12 is provided with an arc-shaped avoidance groove 115 corresponding to and connected to the arc installation groove 114. The handle 4 has an arc insertion groove 113. The limit plug 41 of the arc-shaped slide 113 and the connecting portion 42 extending into the installation cavity by the arc-shaped avoidance groove 115, the arc-shaped avoidance groove 115 can provide the space required for the connection portion 42 to be set, and the arc-shaped slide 113 and the rotating shaft 2 are preferably set concentrically. When the handle 4 rotates, the limit plug 41 moves in the arc-shaped slide 113; the connecting portion 42 is plugged with the rotating shaft 2 and the plugging direction is consistent with the direction in which the limit plug 41 is inserted into the arc-shaped slide 113. A downwardly facing arc-shaped limiting surface 1151 is provided in the air avoidance groove 115, and the arc-shaped limiting surface 1151 resists and limits the connection part 42 downward; when the dual power conversion switch is assembled, the limiting plug 41 on the handle 4 is inserted into the arc-shaped slideway 113, and the connection part 42 and the rotating shaft 2 are plugged into each other during the process of the limiting plug 41 being inserted into the arc-shaped slideway 113, and the arc-shaped slideway 113 can also limit the limiting plug 41 in the up and down directions and then limit the handle 4, so that the handle 4 can be quickly and stably installed and its linkage connection with the rotating shaft 2 can be achieved. After the shell seat 11 and the shell seat 2 12 are matched, the corresponding part of the shell seat 2 12 forms a lateral block for the handle 4 to prevent the handle 4 from loosening, so that the installation of the handle 4 is faster and more convenient, and the arc-shaped limiting surface 1151 in the arc-shaped air avoidance groove 115 can form a shielding protection and resisting limit for the connection part 42 from above, ensuring the installation stability of the handle 4 while maintaining the integrity of the outer shape of the shell 1.

[0032] For further information, see Figure 5 As shown, the handle 4 has a downwardly facing arc-shaped supporting surface 40 suitable for forming a fit with the bottom surface of the arc-shaped mounting groove 114. When the handle 4 rotates, the arc-shaped supporting surface 40 rotates along the bottom surface of the arc-shaped mounting groove 114. The arc-shaped supporting surface 40 cooperates with the bottom surface of the arc-shaped mounting groove 114 (i.e., the upper surface of the upper arc-shaped plate 111) to enhance the pressure resistance of the handle 4 and enhance the stability of the structure.

[0033] like Figure 6 As shown, the opposite ends of the arc-shaped avoidance groove 115 are provided with stop blocks 116 for forming a stop limit for the connecting portion 42. When the handle 4 is rotated to a predetermined position, the side surface of the connecting portion 42 abuts against the corresponding stop block 116 to act as a stop to prevent the handle 4 from continuing to rotate, thereby ensuring that the handle 4 can accurately stop at the predetermined position.

[0034] In order to adapt to the plug-in fit between the connecting portion 42 and the rotating shaft 2, a connecting block 21 is provided on the upper part of the rotating shaft 2, and a connecting plug block 43 is provided on the connecting portion 42. The connecting plug block 43, the limiting plug block 41 and the connecting plug hole 22 are all along the width direction of the housing 1 (i.e. Figure 1 The connecting block 43 is extended in the direction indicated by the arrow B in the middle) to ensure that when the handle 4 is installed, the limiting plug block 41 is inserted into the arc slide 113, and the connecting plug block 43 can be smoothly inserted into the connecting hole 22. The connecting plug block 43 cooperates with the connecting hole 22 to realize the connection between the handle 4 and the rotating shaft 2. Such a setting can facilitate the installation of the handle 4 and the linkage with the rotating shaft 2, which helps to improve the convenience of assembly and the stability of the structure; preferably, the cross-sectional shape of the connecting hole 22 and the connecting plug block 43 is set to be a polygon to enhance the connection effect, thereby ensuring the synchronization of the movement of the handle 4 and the rotating shaft 2.

[0035] like Figure 3 As shown, abutment surfaces 117 are respectively provided at both ends of the arc-shaped slideway 113 in the rotatable direction of the handle 4. When the handle 4 is rotated to the right position, the limiting plug 41 abuts against the abutment surface 117 at the corresponding end, thereby strengthening the limitation of the rotation stroke of the handle 4.

[0036] like Figure 1 and Figure 2 As shown, in order to facilitate the user to identify the current state of the dual power conversion switch, the upper arc plate 111 is provided with a first through hole 118 and a second through hole 119 at intervals in the rotatable direction of the handle 4, and the limit plug 41 is provided with a first switch state identification area 411 and a second switch state identification area 412. When the handle 4 is in the first switch position, the first switch state identification area 411 is opposite to the first through hole 118, and the upper arc plate 111 blocks the second switch state identification area 412. When the handle 4 is in the second switch position, the second switch state identification area 412 is opposite to the second through hole 119, and the upper arc plate 111 blocks the first switch state identification area 411. In this way, the user can quickly know the current state of the switch based on the first switch state identification area 411 / second switch state identification area 412 observed from the first through hole 118 / second through hole 119. Exemplarily, the first switch status identification area 411 is set to "normal", and the second switch status identification area 412 is set to "standby". In this way, when the first switch status identification area 411 is seen from the first through hole 118, it indicates that the dual power conversion switch is connected to the normal power supply, and when the second switch status identification area 412 is seen from the second through hole 119, it indicates that the dual power conversion switch is connected to the standby power supply; alternatively, in actual operation, the first switch status identification area 411 and the second switch status identification area 412 can also be set to different colors to distinguish them.

[0037] like Figure 3 and Figure 5 As shown, in order to improve the breaking capacity of the automatic transfer switch, an arc extinguishing chamber (not shown in the figure) is arranged in the installation cavity, and an exhaust channel 16 is provided on the rear side of the arc extinguishing chamber, and an arc extinguishing plate 17 is provided in the exhaust channel 16. The arc extinguishing plate 17 is a mesh plate structure (that is, a plurality of through holes are arranged on the surface). In actual use, the arc generated when the moving contact 3 is separated from the static contact is extinguished by the arc extinguishing chamber, and the exhaust gas is discharged from the exhaust channel 16, and the free electrons in the gas can be extinguished by the arc extinguishing plate 17.

[0038] In order to realize the automatic switching function of the automatic transfer switch, an automatic operating device for controlling the rotation of the rotating shaft 2 is arranged in the installation cavity. The automatic operating device drives the rotating shaft 2 to rotate so that the moving contact 3 on it contacts with a corresponding set of static contacts.

[0039] In this embodiment, a specific automatic operation device structure is provided: Figure 3 and Figure 4 As shown, the automatic operating device includes an electromagnetic assembly 5, a moving frame 6, a spiral compression spring 7 and a hinge block 8; the two electromagnetic assemblies 5 are arranged in the left and right directions (i.e. Figure 3 The two electromagnetic components 5 are arranged at intervals (in the direction indicated by the arrow C in the middle), the same moving iron core 51 is connected between the two electromagnetic components 5, and the moving iron core 51 can be moved in the left and right directions. The moving frame 6 is fixedly connected to the moving iron core 51. Specifically, the moving frame 6 and the moving iron core 51 can be fixedly connected by assembly (such as clamping), or by injection molding into an integrated structure; the upper end of the helical compression spring 7 is connected to the rotating shaft 2, and the lower end of the helical compression spring 7 is connected to the hinge block 8, and the hinge block 8 is rotatably arranged in the installation cavity through the pivot shaft 13, and the rotation center of the pivot shaft 13 is directly below the rotation center of the rotating shaft 2. Two driving blocks 61 are arranged at intervals in the left and right directions on the moving frame 6, and the middle section of the helical compression spring 7 Located between the two driving blocks 61, the helical compression spring 7 undergoes a morphological change of first compressing to store energy and then stretching to release energy during the rotation of the handle 4; in actual use, when one of the electromagnetic components 5 is energized, the electromagnetic component 5 drives the moving iron core 51 and the moving frame 6 connected thereto to move, and a forward thrust is applied to the middle section of the helical compression spring 7 through the corresponding driving block 61, and then the rotating shaft 2 is driven to rotate through the helical compression spring 7. As the driving block 61 moves and continuously applies thrust to the middle section of the helical compression spring 7, the helical compression spring 7 is gradually compressed and stores energy during this process. When the middle section of the helical compression spring 7 passes through the balance point (the balance point is located on the line connecting the rotation center of the rotating shaft 2 and the rotation center of the pivot shaft 13 (i.e. Figure 3After the middle dotted line L), the spiral compression spring 7 deflects forward and instantly releases the stored energy to drive the rotating shaft 2 to quickly rotate into place, thereby realizing automatic switching of the switch; when the other electromagnetic component 5 works, it drives the moving frame 6 to move in the opposite direction; the above-mentioned automatic operating device has a small number of parts, a simple structure, and is easy to assemble.

[0040] like Figure 3 and Figure 4 As shown, in order to ensure that the rotating shaft 2 jumps instantly during the switch switching process, a protrusion 10 is further provided on the bottom wall of the installation cavity below the pivot shaft 13, and the lower end of the hinge block 8 has a wedge-shaped structure, and the protrusion 10 is a wedge-shaped structure protruding upward and the top end is a circular arc transition. Specifically, the cross-sectional shape of the protrusion 10 is a triangle with a width gradually decreasing from bottom to top; during the rotation of the handle 4, the lower end of the hinge block 8 contacts the protrusion 10 and slides over the protrusion 10; the pivot shaft 13 is arranged along the width direction of the shell 1, and the hinge block 8 is provided with a strip hole 81 that cooperates with the pivot shaft 13. The cooperation between the pivot shaft 13 and the strip hole 81 can make the hinge block 8 not only rotate, but also produce up and down displacement, and the highest point of the protrusion 10 is at the extension line of the line connecting the rotation center of the rotating shaft 2 and the rotation center of the pivot shaft 13 (that is, Figure 3 During the switching operation, the hinge block 8 is driven to rotate by the helical compression spring 7. At first, the hinge block 8 is displaced upward under the guidance of the side of the protrusion 10, and the helical compression spring 7 is squeezed to enhance its compression energy storage effect. When the lower end of the hinge block 8 passes the highest point of the protrusion 10, the hinge block 8 quickly slides from the other side of the protrusion 10 and can cause the helical compression spring 7 to deflect and change direction instantly. At the same time, the helical compression spring 7 releases the stored energy, thereby driving the rotating shaft 2 to rotate quickly into place, thereby improving the switching performance.

[0041] In order to accommodate the reliable installation of the helical compression spring 7, a positioning column A23 is set on the rotating shaft 2, and a positioning column B82 is set at the upper end of the hinge block 8. The upper end of the helical compression spring 7 is sleeved on the positioning column A23, and the lower end of the helical compression spring 7 is sleeved on the positioning column B82, thereby achieving a quick and stable installation of the helical compression spring 7.

[0042] Preferably, one end of the pivot shaft 13 is integrally connected to the shell seat 11, and the other end of the pivot shaft 13 is plugged into the positioning hole 14 on the shell seat 2 12, so that the firmness of the pivot shaft 13 can be ensured, thereby strengthening the installation limit of the hinge block 8.

[0043] Combination Figure 3 and Figure 6As shown, in order to ensure that the helical compression spring 7 does not undergo unexpected bending deformation after installation and when subjected to external force, thereby affecting the normal operation of the switch, a first limiting plane 62 is provided on the side of the movable frame 6 facing the shell seat 2 12, the driving block 61 is provided on the first limiting plane 62, and the shell seat 2 12 is provided with a second limiting plane 15 facing the movable frame 6, the first limiting plane 62 and the second limiting plane 15 are relatively arranged in the width direction of the shell 1, the first limiting plane 62 is parallel to the second limiting plane 15 and can The helical compression spring 7 is respectively limited from both sides (the gap between the first limiting plane 62 and the second limiting plane 15 is slightly larger than the diameter of the helical compression spring 7), and the first limiting plane 62 and the second limiting plane 15 are set as planes that can limit the helical compression spring 7 without affecting the movement of the helical compression spring 7 in a preset direction (i.e., left and right direction). Such a design ensures that the helical compression spring 7 can only be deformed in the left and right direction, and does not bend and deform in other directions, thereby ensuring that the helical compression spring 7 can provide a stable and effective elastic force for the rotating shaft 2.

[0044] In order to better meet the needs of use, the structure of the spiral compression spring 7 is optimized: Fig. 9 As shown, the helical compression spring 7 is formed by winding a spring wire to simplify the structure. The helical compression spring 7 includes a first positioning section 71, a first elastic section 72, a reinforced connecting section 73, a second elastic section 74 and a second positioning section 75 arranged in sequence along the length direction. The reinforced connecting section 73 serves as the middle section of the helical compression spring 7. The spirals of the first elastic section 72 and the second elastic section 74 are equal. The pitch of the reinforced connecting section 73 is greater than the pitch of the first elastic section 72 and the second elastic section 74. The spring coil density of the reinforced connecting section 73 is relatively large, so that the deformation resistance of the reinforced connecting section 73 is greater than the deformation resistance of the first elastic section 72 and the second elastic section 74, and the reinforced connecting section 73 can better withstand the thrust from the driving block 61; the first positioning section 71 and the second positioning section 75 are respectively connected to the rotating shaft 2 and the abutment block 8; the energy storage and release of the helical compression spring 7 during the switch switching process mainly rely on the deformation of the first elastic section 72 and the second elastic section 74.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A dual power switch, comprising a housing (1), a rotating shaft (2), a moving contact (3), a handle (4) and an automatic operating device; the housing (1) comprises a housing seat 1 (11) and a housing seat 2 (12) which are matched to form a mounting cavity; the rotating shaft (2) is rotatably arranged in the mounting cavity; the moving contact (3) is mounted on the rotating shaft (2); the handle (4) is rotatably arranged on the upper part of the housing (1) and is linked to the rotating shaft (2); the automatic operating device is used to control the rotation of the rotating shaft (2); and the characteristics are as follows: The upper portion of the housing seat 1 (11) is provided with an upper arc plate (111) and a lower arc plate (112) that are bent upwards, an arc-shaped slideway (113) is formed between the upper arc plate (111) and the lower arc plate (112), an arc-shaped installation groove (114) for installing the handle (4) is formed between the upper arc plate (111) and the housing seat 2 (12) and on the upper side of the lower arc plate (112), and an arc-shaped air avoidance groove (115) corresponding to and connected to the arc-shaped installation groove (114) is provided on the inner side of the upper portion of the housing seat 2 (12). ), the handle (4) comprises a limit block (41) inserted into the arc-shaped slideway (113) and a connecting portion (42) extending from the arc-shaped avoidance groove (115) into the installation cavity, the connecting portion (42) is plugged into the rotating shaft (2) and the plugging direction is consistent with the direction in which the limit block (41) is inserted into the arc-shaped slideway (113), and a downwardly facing arc-shaped limit surface (1151) is provided in the arc-shaped avoidance groove (115), and the arc-shaped limit surface (1151) blocks and limits the connecting portion (42) downwardly; The automatic operation device comprises an electromagnetic component (5), a movable frame (6), a helical compression spring (7) and an articulated block (8); the two electromagnetic components (5) are arranged at intervals in the left-right direction, and the two electromagnetic components (5) are connected to the same moving iron core (51); the movable frame (6) is fixedly connected to the moving iron core (51); the upper end of the helical compression spring (7) is connected to the rotating shaft (2); the lower end of the helical compression spring (7) is connected to the articulated block (8); the articulated block (8) is rotatably arranged in the installation cavity via a pivot shaft (13); the rotation center of the pivot shaft (13) is located directly below the rotation center of the rotating shaft (2); two driving blocks (61) are arranged at intervals in the left-right direction on the movable frame (6); the middle section of the helical compression spring (7) is located between the two driving blocks (61); and during the rotation of the handle (4), the helical compression spring (7) undergoes a morphological change of first compressing to store energy and then extending to release energy.

2. The dual power conversion switch according to claim 1, characterized in that: The handle (4) has a downwardly facing arc-shaped supporting surface (40) adapted to form a close fit with the bottom surface of the arc-shaped mounting groove (114).

3. The dual power conversion switch according to claim 1, characterized in that: Relative ends of the arc-shaped avoidance groove (115) are provided with stop blocks (116) for stopping and limiting the connection portion (42).

4. The dual power conversion switch according to claim 1, characterized in that: A connecting block (21) is provided on the upper portion of the rotating shaft (2), a connecting plug hole (22) is provided on the connecting block (21), a connecting plug block (43) is provided on the connecting portion (42), the connecting plug block (43), the limiting plug block (41) and the connecting plug hole (22) are all arranged to extend along the width direction of the housing (1), and when the handle (4) is installed, the limiting plug block (41) is inserted into the arc-shaped slideway (113), and the connecting plug block (43) is inserted into the connecting plug hole (22) at the same time.

5. The dual power conversion switch according to claim 1, characterized in that: The arc-shaped slideway (113) is provided with abutment surfaces (117) at both ends in the rotatable direction of the handle (4), and when the handle (4) is rotated to the right position, the side surface of the limit plug (41) abuts against the corresponding abutment surface (117).

6. The dual power conversion switch according to claim 1, characterized in that: The upper arc plate (111) is provided with a first through hole (118) and a second through hole (119) at intervals in the rotatable direction of the handle (4); the limit plug block (41) is provided with a first switch state identification area (411) and a second switch state identification area (412); when the handle (4) is in a first switch position, the first switch state identification area (411) is directly opposite to the first through hole (118), and the upper arc plate (111) blocks the second switch state identification area (412); when the handle (4) is in a second switch position, the second switch state identification area (412) is directly opposite to the second through hole (119), and the upper arc plate (111) blocks the first switch state identification area (411).

7. The dual power conversion switch according to claim 1, characterized in that: A protrusion (10) is provided on the bottom wall of the installation cavity below the pivot shaft (13); the lower end of the hinge block (8) has a wedge-shaped structure; the protrusion (10) is a wedge-shaped structure protruding upward and has a circular arc transition at the top; during the rotation of the handle (4), the lower end of the hinge block (8) contacts the protrusion (10) and slides over the protrusion (10); the pivot shaft (13) is arranged along the width direction of the housing (1), and the hinge block (8) is provided with a strip hole (81) that cooperates with the pivot shaft (13).

8. The dual power conversion switch according to claim 7, characterized in that: One end of the pivot shaft (13) is integrally connected to the first shell seat (11), and the other end of the pivot shaft (13) is plugged into a positioning socket (14) on the second shell seat (12).

9. The dual power conversion switch according to claim 1, characterized in that: A first limiting plane (62) is provided on the side of the movable frame (6) facing the second shell seat (12), the driving block (61) is provided on the first limiting plane (62), and a second limiting plane (15) is provided on the second shell seat (12) facing the movable frame (6), the first limiting plane (62) and the second limiting plane (15) are parallel to each other and respectively form a blocking limit for the helical compression spring (7) from both sides.

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