A fusion switch opening and closing mechanism

Abstract

This utility model relates to a closing and opening mechanism for a fusion switch, comprising: a pre-charge linkage component, which is coaxially arranged and rotates relative to a pre-charge transmission disk, with a third free travel between the pre-charge linkage component and the pre-charge transmission disk; a pre-charge rotating shaft, which is rotatably connected to the axis of the pre-charge transmission disk and the pre-charge linkage component, with a second free travel between the pre-charge rotating shaft and the pre-charge linkage component; a main charging linkage component, which is coaxially arranged and rotates relative to the main charging transmission disk, with a fifth free travel between the main charging linkage component and the main charging transmission disk; and a main charging rotating shaft, which is rotatably connected to the axis of the main charging linkage component and the main charging transmission disk. The beneficial effects of this utility model are: it ensures that the main charging circuit performs its closing / opening action only after the pre-charge circuit completes the closing / opening action, thus guaranteeing the sequence and timeliness of the actions and improving the safety of the fusion switch.

Description

Technical Field

[0001] This utility model relates to the field of fusion switch technology, and in particular to a fusion switch opening and closing action mechanism. Background Technology

[0002] As a key electrical device integrating the main circuit switching and pre-charging functions, the integrated switch is used to first charge the bus capacitor through the pre-charging switch when the system is powered on, and then close the main charging switch after the voltage is balanced, thereby avoiding excessive inrush current and protecting circuit components.

[0003] However, existing integrated switches typically use two independent drive mechanisms to control the on / off state of the main charging circuit and the pre-charging circuit respectively. This results in a complex structure, a large number of parts, a large space occupation, and is not conducive to early assembly and later maintenance. Moreover, it is difficult for the two drive mechanisms to coordinate and link efficiently, and the linkage response speed is slow. If there is a deviation in the action sequence between the pre-charging circuit and the main charging circuit, the circuit will be turned on or off too early or too late, which will affect the safety of the system. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fusion switch opening and closing action mechanism to solve the above problems.

[0005] The technical solution of this utility model is implemented as follows: a fusion switch opening and closing action mechanism, including a pre-charge transmission disk disposed inside the housing and connected to the pre-charge circuit for switching the opening / closing state of the pre-charge circuit, and a main charging transmission disk connected to the main charging circuit for switching the opening / closing state of the main charging circuit, and further including:

[0006] A pre-charge linkage component is provided, which is coaxially arranged with the pre-charge transmission disk and rotates relative to it. There is a third free stroke between the pre-charge linkage component and the pre-charge transmission disk. When the pre-charge linkage component rotates relative to the pre-charge transmission disk and completes the third free stroke, the pre-charge linkage component drives the pre-charge transmission disk to rotate.

[0007] A pre-charge rotating shaft is rotatably connected to the axis of the pre-charge transmission disk and the pre-charge linkage component. There is a second free stroke between the pre-charge rotating shaft and the pre-charge linkage component. When the pre-charge rotating shaft rotates relative to the pre-charge linkage component and completes the second free stroke, the pre-charge rotating shaft drives the pre-charge linkage component to rotate.

[0008] The main charging linkage component and the main charging transmission disk are coaxially arranged and rotate relative to each other. There is a fifth empty stroke between the main charging linkage component and the main charging transmission disk. When the main charging linkage component rotates relative to the main charging transmission disk and completes the fifth empty stroke, the main charging linkage component drives the main charging transmission disk to rotate.

[0009] The main charging shaft is rotatably connected to the axis of the main charging linkage and the main charging transmission disc;

[0010] Specifically, after the pre-charge shaft completes its second empty stroke, the pre-charge linkage then completes its third empty stroke.

[0011] The present invention is further configured such that: the pre-charge linkage component is provided with a first connecting pin connected to the pre-charge transmission disk, the pre-charge transmission disk is provided with a first connecting hole that slides with the first connecting pin, and the third idle stroke is set as the movement path of the first connecting pin in the first connecting hole;

[0012] The outer wall of the precharge shaft has a protruding lug, and the center of the precharge linkage has a first center hole that mates with the precharge shaft and the lug. The second idle stroke is the movement path of the lug within the first center hole.

[0013] The main charging linkage component is provided with a second connecting pin that connects to the main charging transmission disk. The main charging transmission disk is provided with a second connecting hole that slides with the second connecting pin. The fifth free stroke is set as the movement path of the second connecting pin in the second connecting hole.

[0014] This utility model is further configured to include:

[0015] The drive gear is coaxially arranged with the pre-charge shaft and rotates relative to it. There is a first free stroke between the drive gear and the pre-charge shaft. The drive gear has a second center hole that mates with the pre-charge shaft and the lug. The first free stroke is the movement path of the lug within the second center hole. The first free stroke is the same as the second free stroke. When the pre-charge shaft rotates relative to the drive gear and completes the first free stroke, the pre-charge shaft simultaneously drives the drive gear and the rotating pre-charge linkage to rotate.

[0016] Driven gear, the driven gear is rotatably connected to the main charging shaft, there is a fourth free stroke between the driven gear and the main charging linkage, a third connecting hole is opened on one side of the driven gear to slide with the second connecting pin, the fourth free stroke is set as the movement path of the second connecting pin in the third connecting hole, when the driven gear completes the fourth free stroke, the main charging linkage then goes through a fifth free stroke;

[0017] In this configuration, the driving gear and the driven gear mesh, and when the pre-charge shaft has completed its third idle stroke, the driven gear has not yet completed its fourth idle stroke.

[0018] The present invention is further configured to include an energy storage mechanism, wherein multiple energy storage mechanisms are disposed between the first connecting pin and the outer casing and between the second connecting pin and the outer casing, and the energy storage mechanism includes:

[0019] A spring seat, which is rotatably connected to the housing via a connecting shaft;

[0020] A spring bracket, one end of which is hinged to a first connecting pin or a second connecting pin, and the other end of which has an oblong hole that is movably connected to a connecting shaft. A storage spring is fitted on the spring bracket, one end of which abuts against a spring seat and the other end is connected to the spring bracket.

[0021] By adopting the above technical solution, when the pre-charge shaft rotates, it simultaneously drives the pre-charge linkage and the drive gear to rotate during the first and second idle strokes. During the third idle stroke, the pre-charge linkage compresses and stores energy in the energy storage spring. When the energy storage mechanism reaches its dead point, the pre-charge linkage has also completed its third idle stroke. After passing the dead point, the energy storage spring releases energy, pushing the pre-charge linkage to rotate rapidly, thereby driving the pre-charge transmission disc to rotate rapidly, achieving rapid closing of the pre-charge circuit. When the pre-charge transmission disc is in the closed position, due to the existence of the first and second idle strokes, the drive gear has not yet fully rotated to its position. Then, through the continued force applied by the drive mechanism, the driving gear drives the driven gear to continue rotating. When the driven gear completes the fourth idle stroke, it drives the main charging linkage to rotate and compresses and stores energy in the energy storage mechanism on the main charging linkage. When the energy storage mechanism on the main charging linkage reaches the dead point, the main charging linkage has just completed the fifth idle stroke. After passing the dead point, the energy storage spring releases energy and pushes the main charging linkage to rotate rapidly, thereby driving the main charging transmission disc to rotate rapidly, realizing the rapid closing action of the main charging circuit. This ensures that the pre-charging circuit completes the opening / closing action before driving the main charging circuit to perform the opening / closing action, guaranteeing the sequence and timeliness of the actions and improving the safety of the fusion switch.

[0022] The present invention is further configured such that there is a tooth speed ratio between the driving gear and the driven gear, and the tooth speed ratio is less than 1.

[0023] By adopting the above technical solution, the gear ratio setting can effectively ensure the action sequence between the pre-charging circuit and the main charging circuit, so that after the pre-charging drive disc completes the opening / closing action, it drives the main charging drive disc to perform the opening / closing action, thereby improving the continuity of the action. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0027] Figure 3 Structural diagram of this utility model Figure 3 (Hide the driving gear and driven gear);

[0028] Figure 4 This is a schematic diagram of the structure of this utility model when it is in the open state;

[0029] Figure 5 This is a schematic diagram of the structure of this utility model when it is in the dead point state of the precharge circuit;

[0030] Figure 6 This is a schematic diagram of the structure of this utility model when it is in the dead point state of the main charging circuit;

[0031] Figure 7 This is a schematic diagram of the structure of the present invention when it is in the closed state;

[0032] Figure 8 for Figure 4 A schematic diagram of the structure after concealing the driving gear, driven gear, and some parts;

[0033] Figure 9 for Figure 5 A schematic diagram of the structure after concealing the driving gear, driven gear, and some parts;

[0034] Figure 10 for Figure 6 A schematic diagram of the structure after concealing the driving gear, driven gear, and some parts;

[0035] Figure 11 for Figure 7 A schematic diagram showing the structure after the driving gear, driven gear, and some parts are hidden. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1-11As shown, this utility model discloses a fusion switch opening and closing action mechanism, including a pre-charge transmission disk 30 disposed inside the housing 1 and connected to the pre-charge circuit for switching the opening / closing state of the pre-charge circuit, and a main charging transmission disk 40 connected to the main charging circuit for switching the opening / closing state of the main charging circuit, and further including:

[0038] A pre-charge linkage 31 is provided, which is coaxially arranged with the pre-charge transmission disk 30 and rotates relative to it. There is a third free stroke between the pre-charge linkage 31 and the pre-charge transmission disk 30. When the pre-charge linkage 31 rotates relative to the pre-charge transmission disk 30 and completes the third free stroke, the pre-charge linkage 31 drives the pre-charge transmission disk 30 to rotate. The pre-charge linkage 31 is provided with a first connecting pin 32 that connects to the pre-charge transmission disk 30. The pre-charge transmission disk 30 is provided with a first connecting hole 300 that slides with the first connecting pin 32. The third free stroke is the movement path of the first connecting pin 32 within the first connecting hole 300.

[0039] A pre-charge rotating shaft 33 is rotatably connected to the axis of the pre-charge transmission disk 30 and the pre-charge linkage 31. There is a second free stroke between the pre-charge rotating shaft 33 and the pre-charge linkage 31. When the pre-charge rotating shaft 33 rotates relative to the pre-charge linkage 31 and completes the second free stroke, the pre-charge rotating shaft 33 drives the pre-charge linkage 31 to rotate. A lug 330 protrudes from the outer wall of the pre-charge rotating shaft 33. A first center hole 310 is opened at the center of the pre-charge linkage 31 to cooperate with the pre-charge rotating shaft 33 and the lug 330. The second free stroke is the movement path of the lug 330 within the first center hole 310.

[0040] The main charging linkage 41 is coaxially arranged with the main charging transmission disk 40 and rotates relative to it. There is a fifth free stroke between the main charging linkage 41 and the main charging transmission disk 40. When the main charging linkage 41 rotates relative to the main charging transmission disk 40 and completes the fifth free stroke, the main charging linkage 41 drives the main charging transmission disk 40 to rotate. The main charging linkage 41 is provided with a second connecting pin 42 that connects to the main charging transmission disk 40. The main charging transmission disk 40 is provided with a second connecting hole 400 that slides with the second connecting pin 42. The fifth free stroke is the movement path of the second connecting pin 42 within the second connecting hole 400.

[0041] The main charging shaft 43 is rotatably connected to the axis of the main charging linkage 41 and the main charging transmission disk 40.

[0042] Specifically, after the pre-charge shaft 33 completes its second empty stroke, the pre-charge linkage 31 then completes its third empty stroke.

[0043] In this embodiment of the utility model, it further includes:

[0044] The drive gear 34 is coaxially arranged with the pre-charge shaft 33 and rotates relative to it. There is a first free stroke between the drive gear 34 and the pre-charge shaft 33. The center of the drive gear 34 is provided with a second center hole 340 that cooperates with the pre-charge shaft 33 and the lug 330. The first free stroke is the movement path of the lug 330 in the second center hole 340. The first free stroke is the same as the second free stroke. When the pre-charge shaft 33 rotates relative to the drive gear 34 and completes the first free stroke, the pre-charge shaft 33 simultaneously drives the drive gear 34 and the rotating pre-charge linkage 31 to rotate.

[0045] Driven gear 44 is rotatably connected to main charging shaft 43. There is a fourth free stroke between driven gear 44 and main charging linkage 41. A third connecting hole 440 is provided on one side of driven gear 44 to slide with second connecting pin 42. The fourth free stroke is the movement path of second connecting pin 42 in the third connecting hole 440. After driven gear 44 completes the fourth free stroke, main charging linkage 41 then goes through a fifth free stroke.

[0046] In this configuration, the driving gear 34 and the driven gear 44 mesh, and when the pre-charge shaft 33 has completed its third idle stroke, the driven gear 44 has not yet completed its fourth idle stroke.

[0047] In this embodiment of the utility model, an energy storage mechanism 8 is further included. Multiple energy storage mechanisms 8 are disposed between the first connecting pin 32 and the outer casing 1, and between the second connecting pin 42 and the outer casing 1. Each energy storage mechanism 8 includes:

[0048] Spring seat 80, which is rotatably connected to the housing 1 via connecting shaft 81;

[0049] A spring bracket 82 is provided, one end of which is hinged to a first connecting pin 32 or a second connecting pin 42. The other end of the spring bracket 82 is provided with an oblong hole 820 that is movably connected to a connecting shaft 81. A storage spring 83 is sleeved on the spring bracket 82, one end of which abuts against a spring seat 80 and the other end is connected to the spring bracket 82.

[0050] By adopting the above technical solution, when the pre-charge shaft 33 rotates, it simultaneously drives the pre-charge linkage 31 and the drive gear 34 to rotate during the first and second idle strokes. During the third idle stroke, the pre-charge linkage 31 compresses and stores energy in the energy storage spring 83 on the energy storage mechanism 8. When the energy storage mechanism 8 on the pre-charge linkage 31 reaches its dead point, the pre-charge linkage 31 has also just completed its third idle stroke. After passing the dead point, the energy storage spring 83 releases energy, pushing the pre-charge linkage 31 to rotate rapidly, thereby driving the pre-charge transmission disc 30 to rotate rapidly, achieving a rapid closing action of the pre-charge circuit. When the pre-charge transmission disc 30 is in the closed position, due to the existence of the first and second idle strokes, the drive gear 34 has not yet fully rotated to its position (e.g., ...). Figure 6 (As shown in the state of the driving gear), then through the continued force applied by the drive mechanism 7, the driving gear 34 drives the driven gear 44 to continue rotating. When the driven gear 44 completes the fourth idle stroke, the driven gear 44 drives the main charging linkage 41 to rotate and compresses and stores energy in the energy storage mechanism 8 on the main charging linkage 41. When the energy storage mechanism 8 on the main charging linkage 41 reaches the dead point, the main charging linkage 41 has just completed the fifth idle stroke. After passing the dead point, the energy storage spring 83 releases energy and pushes the main charging linkage 41 to rotate rapidly, thereby driving the main charging transmission disk 40 to rotate rapidly, realizing the rapid closing action of the main charging circuit; so that after the pre-charging circuit completes the opening / closing action, it drives the main charging circuit to perform the opening / closing action, ensuring the sequence and timeliness of the actions, and improving the safety of the fusion switch.

[0051] In this embodiment of the present invention, there is a gear speed ratio between the driving gear 34 and the driven gear 44, which is less than 1.

[0052] By adopting the above technical solution, the gear ratio setting can effectively ensure the action sequence between the pre-charging circuit and the main charging circuit, so that after the pre-charging transmission disk 30 completes the opening / closing action, it drives the main charging transmission disk 40 to perform the opening / closing action, thereby improving the continuity of the action.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fusion switch opening and closing action mechanism, comprising a pre-charge transmission disk (30) disposed within a housing (1) and connected to a pre-charge circuit for switching the opening / closing state of the pre-charge circuit, and a main charging transmission disk (40) connected to a main charging circuit for switching the opening / closing state of the main charging circuit, characterized in that, Also includes: The pre-charge linkage (31) and the pre-charge transmission disk (30) are coaxially arranged and rotate relative to each other. There is a third empty stroke between the pre-charge linkage (31) and the pre-charge transmission disk (30). When the pre-charge linkage (31) rotates relative to the pre-charge transmission disk (30) and completes the third empty stroke, the pre-charge linkage (31) drives the pre-charge transmission disk (30) to rotate. A pre-charge rotating shaft (33) is rotatably connected to the axis of the pre-charge transmission disk (30) and the pre-charge linkage (31). There is a second free stroke between the pre-charge rotating shaft (33) and the pre-charge linkage (31). When the pre-charge rotating shaft (33) rotates relative to the pre-charge linkage (31) and completes the second free stroke, the pre-charge rotating shaft (33) drives the pre-charge linkage (31) to rotate. The main charging linkage (41) and the main charging transmission disk (40) are coaxially arranged and rotate relative to each other. There is a fifth empty stroke between the main charging linkage (41) and the main charging transmission disk (40). When the main charging linkage (41) rotates relative to the main charging transmission disk (40) and completes the fifth empty stroke, the main charging linkage (41) drives the main charging transmission disk (40) to rotate. The main charging shaft (43) is rotatably connected to the axis of the main charging linkage (41) and the main charging transmission disc (40); When the precharge shaft (33) completes its second empty stroke, the precharge linkage (31) then completes its third empty stroke.

2. The mechanism according to claim 1, wherein The pre-charge linkage component (31) is provided with a first connecting pin (32) that is connected to the pre-charge transmission disk (30). The pre-charge transmission disk (30) is provided with a first connecting hole (300) that is slidably engaged with the first connecting pin (32). The third free stroke is set as the movement path of the first connecting pin (32) in the first connecting hole (300). The precharge shaft (33) has a protruding lug (330) on its outer wall. The precharge linkage (31) has a first center hole (310) at its center that mates with the precharge shaft (33) and the lug (330). The second idle stroke is the movement path of the lug (330) within the first center hole (310). The main charging linkage component (41) is provided with a second connecting pin (42) that is connected to the main charging transmission disk (40). The main charging transmission disk (40) is provided with a second connecting hole (400) that is slidably engaged with the second connecting pin (42). The fifth free stroke is set as the movement path of the second connecting pin (42) in the second connecting hole (400).

3. The mechanism according to claim 2, wherein Also includes: The active gear (34) is coaxially arranged with the pre-charge shaft (33) and rotates relative to it. There is a first free stroke between the active gear (34) and the pre-charge shaft (33). A second center hole (340) is opened on the center of the active gear (34) to cooperate with the pre-charge shaft (33) and the lug (330). The first free stroke is the movement path of the lug (330) in the second center hole (340). The first free stroke is the same as the second free stroke. When the pre-charge shaft (33) rotates relative to the active gear (34) and completes the first free stroke, the pre-charge shaft (33) simultaneously drives the active gear (34) and the rotating pre-charge linkage (31) to rotate. Driven gear (44) is rotatably connected to main charging shaft (43). There is a fourth free stroke between driven gear (44) and main charging linkage (41). A third connecting hole (440) is provided on one side of driven gear (44) to slide with second connecting pin (42). The fourth free stroke is set as the movement path of second connecting pin (42) in third connecting hole (440). After driven gear (44) completes the fourth free stroke, main charging linkage (41) goes through a fifth free stroke. In this case, the driving gear (34) and the driven gear (44) mesh, and when the pre-charge shaft (33) has completed the third empty stroke, the driven gear (44) has not yet completed the fourth empty stroke.

4. The mechanism according to claim 3, wherein It also includes an energy storage mechanism (8), wherein multiple energy storage mechanisms (8) are disposed between the first connecting pin (32) and the outer casing (1) and between the second connecting pin (42) and the outer casing (1), and the energy storage mechanism (8) includes: A spring seat (80) is rotatably connected to the housing (1) via a connecting shaft (81); A spring bracket (82) is provided. One end of the spring bracket (82) is hinged to a first connecting pin (32) or a second connecting pin (42). The other end of the spring bracket (82) is provided with a waist-shaped hole (820) that is movably connected to a connecting shaft (81). A storage spring (83) is sleeved on the spring bracket (82). One end of the storage spring (83) abuts against a spring seat (80), and the other end is connected to the spring bracket (82).

5. The mechanism according to claim 3, wherein There is a gear ratio between the driving gear (34) and the driven gear (44), and the gear ratio is less than 1.

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