Change-over switch

Abstract

A change-over switch comprises a shell and a switch pole, the switch pole comprises a rotating shaft and two sets of contact mechanisms, the rotating shaft is rotatably arranged between the two sets of contact mechanisms, each set of contact mechanism comprises a moving contact assembly and a static contact assembly, the rotating shaft comprises a driving shaft and two rotating discs, and each rotating disc is driven by the driving shaft to rotate. The driving shaft is provided with two opening pushing parts, each opening pushing part is matched with one linkage part, when the driving shaft is rotated, one opening pushing part drives one linkage part to drive the connected rotating disc to rotate in an opening mode, and the other opening pushing part drives the other linkage part to drive the other rotating disc to rotate in an opening mode. And the driving shaft drives the other rotating disc to switch on and rotate. According to the utility model, the rotating shaft adopts a split structure, the opening pushing part on the driving shaft is firstly matched with the linkage piece to drive one rotating disc to be opened, and then the driving shaft drives the other rotating disc to be closed, so that two groups of contact mechanisms are prevented from being closed at the same time, and the use safety is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus field, concretely relates to a change-over switch. BACKGROUND

[0002] The change-over switch realizes the conversion of load line between two power sources, is widely used in various uninterrupted power supply places to ensure power supply reliability, and is generally switched on and off by switching two sets of contact mechanisms to realize the switching of normal and standby power sources, that is, the change-over switch drives two sets of contact mechanisms to move on and off through its rotating shaft, however, in the prior art, the switching of two sets of contact mechanisms is almost simultaneous, when it cannot be ensured that one set of contact mechanisms is opened first, the simultaneous closing of two sets of contact mechanisms is prone to occur, which is not conducive to the safe use of the change-over switch. SUMMARY

[0003] The utility model discloses a change-over switch which overcomes at least one defect of the prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The utility model provides a change-over switch, including shell and switch pole setting in the shell, the switch pole includes rotating shaft and two sets of contact mechanism, the rotating shaft rotation is arranged between two sets of contact mechanism, and each set of contact mechanism includes interval setting's dynamic contact subassembly and static contact group, the rotating shaft includes drive shaft, two coaxial rotating discs are assembled on the drive shaft, and each rotating disc is driven to rotate by drive shaft respectively, and each rotating disc is driven dynamic contact subassembly and corresponding static contact group contact or separate through linkage,

[0006] The drive shaft is equipped with two opening push part, and each opening push part is matched with a linkage respectively, when rotating the drive shaft, first drive a linkage to drive the rotating disc connected to open and rotate by one opening push part, and then drive another rotating disc to close and rotate by the drive shaft.

[0007] Preferably, the middle part of the drive shaft is outwardly convex to form the opening push part, and the two ends of the drive shaft are respectively connected with the two rotating discs, and one end of the linkage connected to each rotating disc is located on the rotating track of the opening push part.

[0008] Preferably, the drive shaft is provided with a driving part, and the two opening push parts are symmetrically distributed on the two sides of the driving part along the circumferential direction of the drive shaft, and the rotating disc is provided with a driving groove matched with the driving part, and the driving part and the driving groove are matched to drive the rotating disc to rotate in the closing direction or the opening direction.

[0009] Preferably, the middle part of the driving shaft is provided with a strip-shaped boss, the middle part of the driving shaft protrudes radially to form a disc-shaped partition part, two rotating discs are separated by the partition part, the strip-shaped boss is divided into two driving parts by the partition part, the two side edges of the partition part respectively protrude outward to form bosses of the two split gate pushing parts, and the two split gate pushing parts are symmetrically distributed on the two sides of the strip-shaped boss along the circumferential direction of the partition part.

[0010] Preferably, the circumferential side wall of each rotating disc is provided with a connecting part, the connecting part is provided with a connecting hole, one end of the linkage member passes through the connecting hole, and under the pushing of the split gate pushing part, one end of the linkage member slides in the connecting hole.

[0011] Preferably, the rotating disc is provided with an arc-shaped driving groove, the opposite ends of the driving groove are respectively used as the closing gate part and the split gate part stopper, the circumferential side wall of the driving shaft is provided with a driving part, the driving part is matched with the closing gate part or the split gate part to drive the rotating disc to rotate, and the central angle of the driving groove is greater than the central angle of the driving part.

[0012] Preferably, the middle part of the end face of the rotating disc is provided with a through central hole, one end of the driving shaft passes through the central hole, the driving groove is arranged on the hole wall of the central hole, and the circumferential side wall of the rotating disc is provided with a connecting part, and the connecting part is provided with a strip-shaped connecting hole.

[0013] Preferably, the connecting part is deviated from the driving groove, and the two connecting parts are located between the two split gate pushing parts.

[0014] Preferably, the linkage member is a U-shaped rod body, one end of the linkage member is slidingly inserted into the connecting hole, and the other end is connected with a moving contact assembly.

[0015] Preferably, the moving contact assembly comprises a contact support and a moving contact arranged on the contact support, and the linkage member is connected between the contact support and the rotating disc.

[0016] The rotating switch of the utility model, the rotating shaft adopts a split structure, one rotating disc is first driven to split by the split gate pushing part on the driving shaft in cooperation with the linkage member, and then the other rotating disc is closed by the driving shaft, so that one group of contact mechanisms is first split, and the other group of contact mechanisms is then closed, the simultaneous closing of the two groups of contact mechanisms is avoided, and the use safety of the rotating switch is ensured.

[0017] In addition, the driving shaft is provided with a partition part for separating the two rotating discs, so that the two rotating discs do not interfere with each other during rotation.

[0018] In addition, the linkage member is a U-shaped rod body structure, one end of the linkage member is slidingly matched with the connecting hole, the structure is simple, and the cooperation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model switch;

[0020] Figure 2 is a structural schematic view of the utility model switch after removing the shell;

[0021] Figure 3 is a structural schematic view of the utility model switch, the rotating shaft, the linkage and the movable contact assembly;

[0022] Figure 4 is a cooperation schematic view of the utility model switch, the driving shaft, the rotating disc, the linkage and the movable contact assembly;

[0023] Figure 5 is an exploded schematic view of the utility model switch, the rotating shaft;

[0024] Figure 6 is a structural schematic view of the utility model switch, the driving shaft;

[0025] Figure 7 is a structural schematic view of the utility model switch, the rotating disc;

[0026] Figure 8 is a sectional view of the utility model switch, the rotating disc and the driving shaft;

[0027] Figure 9 is a structural schematic view of the utility model switch, the linkage;

[0028] Reference signs:

[0029] 1- shell, 2- switch pole, 20- terminal, 21- rotating shaft, 211- driving shaft, 2110- separation part, 2111- driving part, 2112- separation part, 212- rotating disc, 2120- central hole, 2121- driving groove, 2122- closing part, 2123- connecting part, 2124- connecting hole, 2125- stop part, 22- movable contact assembly, 221- contact support, 2210- installation cavity, 2211- hinged part, 222- movable contact, 223- contact spring, 23- static contact, 231- static contact plate, 232- static contact point, 24- linkage, 25- reset elastic member, 29- reset torsion spring. DETAILED DESCRIPTION

[0030] The following embodiments are further illustrated by the accompanying drawings, and the specific implementation of the utility model switch is further described. The utility model switch is not limited to the description of the following embodiments.

[0031] As Figure 1As shown, the switch includes a housing 1, at least one switch pole 2 is arranged in the housing 1, when two or more switch poles 2 are arranged in the housing 1, the adjacent two switch poles 2 are arranged in layers, each switch pole 2 includes at least three terminals 20, two sets of contact mechanisms and a rotating shaft 21, the three terminals 20 are divided into at least two incoming terminals and at least one outgoing terminal, the incoming terminals and the outgoing terminals are arranged at opposite ends of the housing 1, each terminal 20 is connected with a terminal port arranged on the housing 1 for connecting with an external power supply, the two sets of contact mechanisms in each switch pole 2 are arranged in layers, each set of contact mechanisms is connected between an incoming terminal and an outgoing terminal, the rotating shaft 21 is rotatably arranged for driving the two sets of contact mechanisms to open and close, and the two sets of contact mechanisms cannot be closed at the same time, that is, when the rotating shaft 21 drives one set of contact mechanisms to close, the other set of contact mechanisms is driven to open. One set of contact mechanisms in the switch pole 2 is connected with a normal power supply through the terminal 20 connected thereto, the other set of contact mechanisms is connected with a standby power supply through the terminal 20 connected thereto, the rotating shaft 21 is driven to rotate, the opening and closing states of the two sets of contact mechanisms are switched to realize the switching of the normal power supply and the standby power supply, and the normal power supply and the standby power supply cannot be connected at the same time.

[0032] Each set of contact mechanisms includes a set of spaced-apart moving contact assemblies 22 and a set of stationary contacts, the rotating shaft 21 is a split structure, the rotating shaft 21 includes a driving shaft 211 which can be driven to rotate, two coaxial rotating discs 212 are arranged on the driving shaft 211, each rotating disc 212 is driven to rotate by the driving shaft 211, each rotating disc 212 drives the moving contact assembly 22 to move linearly towards or away from the stationary contact set through a linkage 24, so as to realize the opening and closing of the contact mechanism.

[0033] For convenience of description, the moving direction of the moving contact assembly 22 is the first direction, that is, the up-down direction in the figure is the first direction, the two sets of contact mechanisms are arranged in layers in the first direction, the two directions perpendicular to the first direction are the second direction and the third direction, the incoming terminals and the outgoing terminals are arranged in layers in the second direction, that is, the left-right direction in the figure is the second direction, the third direction is perpendicular to the first direction and the second direction, Figure 1 Figure 1 Figure 1

[0034] The improvement of the present application is that the driving shaft 211 is provided with two opening pushers 2112, each opening pusher 2112 is matched with a linkage 24, when the driving shaft 211 is driven to rotate, one linkage 24 is first driven by one opening pusher 2112 to drive the connected rotating disc 212 to rotate to open, and then the other rotating disc 212 is driven by the driving shaft 211 to rotate to close.​​​

[0035] Thus, the rotating shaft 21 adopts a split structure, and the split gate pushing part 2112 on the driving shaft 211 is first matched with the linkage 24 to drive one rotating disc 212 to split, and then the driving shaft 211 drives the other rotating disc 212 to close, so as to realize that one group of contact mechanisms is split first, and the other group of contact mechanisms is closed second, avoid the two groups of contact mechanisms being closed at the same time, and ensure the use safety of the switch.

[0036] Specifically, as shown in Figure 1 、 2 and 5-8, the split gate pushing part 2112 is protrudingly arranged on the middle side wall of the driving shaft 211, each rotating disc 212 is respectively assembled at two ends of the driving shaft 211, and one end of the linkage 24 connected to each rotating disc 212 is located on the rotating track of the split gate pushing part 2112. Preferably, the linkage 24 is a U-shaped rod body structure, one end of the linkage 24 corresponds to pass through the connecting hole 2124 of one rotating disc 212, and the one end of the linkage 24 can slide in the connecting hole 2124 of the rotating disc 212, and the other end of the linkage 24 is linked with the movable contact assembly 22. The rotating shaft 21, the movable contact assembly 22 and the linkage 24 have the advantages of simple structure, strong cooperation stability and low cost.

[0037] The driving shaft 211 is provided with a driving part 2111, and the two split gate pushing parts 2112 are symmetrically distributed on both sides of the driving part 2111 along the circumferential direction of the driving shaft 211. The rotating disc 212 is provided with a driving groove 2121, and the driving part 2111 is matched with the driving groove 2121, so as to drive the rotating disc 212 to rotate in the closing direction or the splitting direction, which has the advantages of simple structure and reliable cooperation.

[0038] Preferably, the middle side wall of the driving shaft 211 outwardly protrudes to form a partition part 2110, two ends of the driving shaft 211 are respectively drivingly connected with the two rotating discs 212, one end of the linkage 24 connected to each rotating disc 212 is located on the rotating track of the split gate pushing part 2112, and the two rotating discs 212 are separated by the partition part 2110, so as to avoid mutual interference of the two rotating discs 212 in the rotating process.

[0039] In combination with Figures 1-9 A specific embodiment of a switch is provided.

[0040] As shown in Figure 1 、 2As shown, the changeover switch includes a housing 1, within which at least one switching pole 2 is disposed. Each switching pole 2 is provided with a terminal 20, which is divided into an input terminal and an output terminal. The input terminal and the output terminal are spaced apart and opposite each other in a second direction. Typically, the input terminal and the output terminal are arranged in pairs. Each switching pole 2 includes two sets of contact mechanisms spaced apart in a first direction. A rotating shaft 21 is rotatably mounted between the two sets of contact mechanisms. Each set of contact mechanisms includes a moving contact assembly 22 and a stationary contact assembly spaced apart and opposite each other in the first direction. Each moving contact assembly 22 is linked to the rotating shaft 21 through a linkage 24 and is driven by the rotating shaft 21. The contact assembly 22 moves along a first direction to cooperate with the stationary contact group. The stationary contact group includes two stationary contacts 23 spaced apart in a second direction. In the same contact mechanism, the distance between each stationary contact 23 and the rotating shaft 21 is greater than the distance between the moving contact assembly 22 and the rotating shaft 21. The moving contact assembly 22 moves linearly between the rotating shaft 21 and the stationary contact group. In this embodiment, the two moving contact assemblies 22 are simultaneously driven by the rotating shaft 21 to move along the first direction, but the two contact mechanisms cannot be connected at the same time. That is, one moving contact assembly 22 is in contact with one stationary contact group, and the other moving contact assembly 22 is separated from the other stationary contact assembly.

[0041] In this embodiment, the contact mechanism adopts existing technology, such as... Figures 1-4 As shown, the moving contact assembly 22 includes a contact support 221. The contact support 221 has a hinge portion 2211 on the side near the rotating shaft 21. The hinge portion 2211 has a drive hole in the middle for the linkage member 24 to pass through. The contact support 221 has a mounting cavity 2210 in the middle. The moving contact 222 is disposed through the mounting cavity 2210 along the second direction. Both ends of the moving contact 222 have moving contact portions extending outside the mounting cavity 2210. Each moving contact portion cooperates with a stationary contact 23. A contact spring 223 is provided between the middle of the moving contact 222 and the contact support 221. When the moving contact 222 and the contact support 221 move relative to each other, the contact spring 223 undergoes elastic deformation to provide contact pressure to the moving contact 222. Each stationary contact 23 includes a stationary contact plate 231. One end of the stationary contact plate 231 is arranged along the second direction, and one end of the stationary contact plate 231 is provided with a stationary contact point 232. In the first direction, the stationary contact point 232 of each stationary contact 23 is spaced apart from the moving contact portion.

[0042] like Figures 1-8As shown, the rotating shaft 21 comprises a driving shaft 211, two rotating discs 212 are coaxially arranged on the driving shaft 211, each rotating disc 212 is driven by the driving shaft 211, each rotating disc 212 is connected with the contact support 221 of the movable contact assembly 22 through a linkage 24, when the rotating shaft 21 rotates, the rotation of the driving shaft 211 drives one rotating disc 212 to rotate in the opening direction and the other rotating disc 212 to rotate in the closing direction respectively; the middle part of the driving shaft 211 is further provided with two opening pushing parts 2112, each opening pushing part 2112 cooperates with two linkages 24 respectively, when the driving shaft 211 rotates, the opening pushing part 2112 first pushes one linkage 24, and the linkage 24 and the driving shaft 211 jointly drive one rotating disc 212 to rotate in the opening direction, then the driving shaft 211 drives the other rotating disc 212 to rotate in the closing direction, so that the two contact mechanisms realize one opening and the other closing.

[0043] Further, as shown in Figs. Figure 1 , 2 and 4, each contact mechanism is further provided with a reset elastic member 25, the reset elastic member 25 is connected to each contact support 221, preferably, the reset elastic member 25 is connected with the contact support 221, in the embodiment, the reset elastic member 25 is a spring, the reset elastic member 25 and the linkage 24 can cooperate to form a driving assembly for driving the movable contact assembly 22, each driving assembly can switch between a dead point position and a balance position, when one driving assembly is at the dead point position, the other driving assembly is at the balance position.

[0044] In the embodiment, when the driving assembly is at the dead point position, the two hinge points of the linkage 24 and the axis of the rotating disc 212 are collinear, and at this time, the axis of the linkage 24 and the reset elastic member 25 are almost in a straight line, when the driving assembly is at the balance position, the two hinge points of each linkage 24 and the axis of the rotating disc 212 are not collinear, and at this time, the axis of the linkage 24 and the reset elastic member 25 are arranged at an angle, preferably, when the contact mechanism is at the closed position, the driving assembly connected to the movable contact assembly 22 at the closed position is at the dead point position, which is beneficial to keep the contact mechanism at the closed position, when the contact mechanism is at the open position, the driving assembly connected to the movable contact assembly 22 at the open position is at the balance position.

[0045] In combination with Figures 4-8 a structure applied to the rotating shaft 21 in the embodiment is provided.

[0046] As shown in Figs. Figures 5-7As shown, the rotating shaft 21 comprises a driving shaft 211 and two rotating discs 212, wherein the driving shaft 211 is in a whole cylindrical shape, a strip-shaped boss is protruded on the circumferential side wall of the driving shaft 211, a disc-shaped partition 2110 is formed radially on the middle part of the driving shaft 211, the partition 2110 makes the driving shaft 211 in a stepped shaft body with thick middle and thin ends, the partition 2110 separates the strip-shaped boss into two driving parts 2111, Figure 5 、 6 The protruding height of the strip-shaped boss is less than the protruding height of the partition 2110, that is, the protruding height of each driving part 2111 is less than the protruding height of the partition 2110; two partition pushing parts 2112 are respectively formed as bosses protruded outward on both side edges of the partition 2110, and the two partition pushing parts 2112 are symmetrically distributed on both sides of the strip-shaped boss along the circumferential direction of the partition 2110, Figure 6 Each partition pushing part 2112 comprises a straight side wall and an arc-shaped wall, the straight side wall of each partition pushing part 2112 faces one end of the linkage 24, and the linkage 24 is driven by the straight side wall of the partition pushing part 2112, and the arc-shaped wall of each partition pushing part 2112 faces the driving part 2111.

[0047] As shown in FIGS. Figure 4 、 5 and 8, each rotating disc 212 is in a whole disc shape, a central hole 2120 is formed in the middle part of the end face of the rotating disc 212 and penetrates both sides, the two ends of the driving shaft 211 respectively correspond to the central holes 2120 of the two rotating discs 212, of course, the central hole 2120 of the rotating disc 212 can also not penetrate the rotating disc 212, at this time, one end of the driving shaft 211 is inserted into the central hole 2120; an arc-shaped groove is also formed in the end face of the rotating disc 212, which is used as a driving groove 2121, in this embodiment, the driving groove 2121 is located on one side hole wall of the central hole 2120, so that the side with smaller diameter in the driving groove 2121 is connected with the central hole 2120, and the driving groove 2121, the central hole 2120 and the rotating disc 212 share the same center, the opposite ends of the driving groove 2121 are respectively used as a closing part 2122 and a stop part 2125, one driving part 2111 on the driving shaft 211 is located in the driving groove 2121, the driving part 2111 cooperates with the closing part 2122 to drive the rotating disc 212 to rotate to close, in addition, the central angle of the driving part 2111 is less than the central angle of the driving groove 2121, that is, when the driving part 2111 abuts against the closing part 2122, a gap is left between the driving part 2111 and the stop part 2125, so that when the driving part 2111 cooperates with one closing part 2122 to rotate, there is enough idle stroke between the driving part 2111 and the other stop part 2125.

[0048] The circumferential sidewall of the rotating disk 212 protrudes outward to form a connecting part 2123. The connecting part 2123 is located on the side away from the drive groove 2121 and is located closer to the stop part 2125. The connecting part 2123 has a strip-shaped connecting hole 2124. The through direction of the strip-shaped hole is parallel to the through direction of the central hole 2120. One end of the linkage 24 passes through the connecting hole 2124 and can slide in the connecting hole 2124. When the two rotating disks 212 are assembled on the drive shaft 211, at least one connecting part 2123 corresponds to the two opening push parts 2112. In this embodiment, the connecting part 2123 connected to the moving contact assembly 22 located in the closed position is located between the straight sidewalls of the two opening push parts 2112, and the connecting part 2123 connected to the moving contact in the open position is located between the arc-shaped walls of the two opening push parts 2112.

[0049] A limiting part 11 is also provided inside the outer casing 1. Figure 1 The middle limiting part 11 is an arc-shaped boss. The limiting part 11 is arranged around the side of the rotating shaft 21 opposite to the connecting part 2123. When the rotating shaft 21 is rotated, each connecting part 2123 can cooperate with the limiting part 11 to stop, thereby limiting the rotation when the rotating disk 212 rotates to the open position.

[0050] In this embodiment, as Figure 9 As shown, the linkage 24 is a U-shaped rod, and one end of the linkage 24 is slidably inserted into the connecting hole 2124, as shown. Figures 1-4 As shown, one end of the linkage 24 located in the connection hole 2124 extends to the moving trajectory of the tripping push part 2112, and the other end is connected to the moving contact assembly 22. That is, the other end of the linkage 24 passes through the drive hole of the contact support 221.

[0051] Combination Figures 1-3 The process can be briefly described as follows:

[0052] exist Figure 1 , 2 In the middle, the contact mechanism located at the top is the first contact mechanism, and the contact mechanism located at the bottom is the second contact mechanism. Figure 1 , 2 In the circuit, the first contact mechanism opens the circuit and the second contact mechanism closes the circuit. The moving contact assembly 22 in the first contact mechanism is connected to the first linkage member, and the moving contact assembly 22 in the second contact mechanism is connected to the second linkage member. The two rotating disks 212 of the rotating shaft 21 are divided into the first rotating disk and the second rotating disk according to the first linkage member and the second linkage member connected to them. The circuit breaker pushing part 2112 that cooperates with the first linkage member is the first circuit breaker pushing part, and the circuit breaker pushing part 2112 that cooperates with the second linkage member is the second circuit breaker pushing part.

[0053] like Figure 1 ,3 When the driving shaft 211 rotates to switch the state of the two sets of contact mechanisms, the driving shaft 211 rotates, the straight side wall of the second opening pusher pushes one end of the second linkage, and thus the second rotating disc rotates to the opening direction under the drive of the second opening pusher, thereby driving the movable contact assembly 22 in the second contact mechanism to move to the opening direction, at the same time, the second rotating disc rotates a distance relative to the first rotating disc, until the driving part 2111 moves a distance in the driving groove 2121 of the first rotating disc and cooperates with the closing part of the first rotating disc, so as to drive the first rotating disc to rotate to the closing direction, the closing rotating first rotating disc drives the movable contact assembly 22 of the first contact mechanism to move to the closing direction through the first linkage, so as to realize that the second contact mechanism opens first and the first contact mechanism closes later, and the driving part 2111 can move between the stop part 2215 and the closing part 2212 of the second rotating disc during the closing rotation of the first rotating disc.

[0054] After that, when the driving shaft 211 rotates to switch the state of the two sets of contact mechanisms again, the driving shaft 2111 rotates, the straight side wall of the first opening pusher pushes one end of the first linkage, and thus the first rotating disc rotates to the opening direction under the drive of the first opening pusher, thereby driving the movable contact assembly 22 in the first contact mechanism to move to the opening direction, at the same time, the first rotating disc rotates a distance relative to the second rotating disc, until the driving part 2111 moves a distance in the driving groove 2121 of the second rotating disc and cooperates with the closing part of the second rotating disc, so as to drive the second rotating disc to rotate to the closing direction, the closing rotating second rotating disc drives the movable contact assembly 22 of the second contact mechanism to move to the closing direction through the second linkage, so as to realize that the first contact mechanism opens first and the second contact mechanism closes later, and the driving part 2111 can move between the stop part 2215 and the closing part 2212 of the first rotating disc during the closing rotation of the second rotating disc.

[0055] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used in use, and are only for the convenience of description, and cannot be understood as indicating that the devices or elements referred to must have a specific orientation, therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0056] The above is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them shall be deemed as belonging to the protection scope of the utility model.

Claims

1. A changeover switch, comprising a housing (1) and a switch electrode (2) disposed within the housing (1), the switch electrode (2) comprising a rotating shaft (21) and two sets of contact mechanisms, the rotating shaft (21) being rotatably disposed between the two sets of contact mechanisms, each set of contact mechanisms comprising a moving contact assembly (22) and a stationary contact assembly disposed at intervals, characterized in that: The rotating shaft (21) comprises a driving shaft (211), two coaxial rotating discs (212) are assembled on the driving shaft (211), each rotating disc (212) is driven to rotate by the driving shaft (211) respectively, and each rotating disc (212) drives the moving contact assembly (22) to contact or separate from the corresponding static contact assembly through the linkage (24), The driving shaft (211) is provided with two split gate pushing parts (2112), each split gate pushing part (2112) cooperates with one linkage (24) respectively, when the driving shaft (211) is rotated, one linkage (24) is first driven by one split gate pushing part (2112) to drive the connected rotating disc (212) to rotate to split gate, and then another rotating disc (212) is driven by the driving shaft (211) to rotate to close gate.

2. The switch according to claim 1, characterized in that: The middle part of the driving shaft (211) is outwardly protruded to form the split gate pushing part (2112), and the two ends of the driving shaft (211) are respectively drivingly connected with the two rotating discs (212), and one end of the linkage (24) connected with each rotating disc (212) is located on the rotating track of the split gate pushing part (2112).

3. The switch according to claim 1, characterized in that: The driving shaft (211) is provided with a driving part (2111), and the two split gate pushing parts (2112) are symmetrically distributed on the two sides of the driving part (2111) along the circumferential direction of the driving shaft (211), and the rotating disc (212) is provided with a driving groove (2121) matched with the driving part (2111).

4. The switch according to claim 1, characterized in that: The middle part of the driving shaft (211) is outwardly protruded to form a strip-shaped boss, and the middle part of the driving shaft (211) is outwardly protruded along the radial direction to form a disc-shaped separation part (2110), the two rotating discs (212) are separated by the separation part (2110), the strip-shaped boss is divided into two driving parts (2111) by the separation part (2110), the two side edges of the separation part (2110) are outwardly protruded to form bosses of the split gate pushing parts (2112) respectively, and the two split gate pushing parts (2112) are symmetrically distributed on the two sides of the strip-shaped boss along the circumferential direction of the separation part (2110).

5. The switch according to claim 1, characterized in that: The circumferential side wall of each rotating disc (212) is outwardly protruded to form a connecting part (2123), the connecting part (2123) is provided with a connecting hole (2124), one end of the linkage (24) penetrates through the connecting hole (2124), and under the pushing of the split gate pushing part (2112), one end of the linkage (24) slides in the connecting hole (2124).

6. The switch according to claim 1, characterized in that: The rotating disc (212) is provided with an arc-shaped driving groove (2121), the opposite ends of the driving groove (2121) are respectively used as a closing gate part (2122) and a stop part (2125), the circumferential side wall of the driving shaft (211) is outwardly protruded to form a driving part (2111), the driving part (2111) cooperates with the closing gate part (2122) to drive the rotating disc (212) to rotate to close gate, and the central angle of the driving groove (2121) is greater than the central angle of the driving part (2111).

7. The switch according to claim 6, characterized in that: The end surface of the rotating disc (212) is provided with a through central hole (2120) in the middle, one end of the driving shaft (211) passes through the central hole (2120), the driving groove (2121) is arranged on the hole wall of the central hole (2120), the circumferential side wall of the rotating disc (212) is provided with a connecting part (2123), and the connecting part (2123) is provided with a strip-shaped connecting hole (2124).

8. The switch according to claim 7, characterized in that: The connecting part (2123) deviates from the driving groove (2121), and the two connecting parts (2123) are correspondingly located between the two split gate pushing parts (2112).

9. The switch according to claim 7, characterized in that: The linkage (24) is a U-shaped rod body, one end of the linkage (24) is slidingly inserted into the connecting hole (2124), and the other end is connected with one moving contact assembly (22).

10. The switch according to claim 1, characterized in that: The moving contact assembly (22) comprises a contact support (221) and a moving contact (222) arranged on the contact support (221), and the linkage (24) is connected between the contact support (221) and the rotating disc (212).

Images