Operating mechanism of dual-power change-over switch

Abstract

The utility model discloses an operating mechanism of a dual-power change-over switch, which comprises an upper contact assembly, a lower contact assembly and a transmission dial assembly, and transmission mechanisms are arranged at two ends of the transmission dial assembly. The driving module is used for driving a power supply of the upper contact assembly and the lower contact assembly to be in a conducting state or a non-conducting state; the transmission mechanism is provided with a maintaining device used for maintaining the position of the transmission drive plate assembly after movement. Through the technical effect of the first cylinder, a reset spring does not need to be externally arranged, so that the mechanical structure of the contact hook is simplified, the failure rate is reduced, the maintaining device fully utilizes the internal space, a bias elastic piece on the operating mechanism is omitted, the overall size of the operating mechanism is reduced, layout and design are facilitated, and the cost is reduced. The holding device and a plurality of tension springs are combined to shorten the switching time of the main and standby power supplies, so that the product has the advantages of low failure rate, reduced manufacturing cost, improved space utilization rate, improved switching speed of the main and standby power supplies and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of change-over switch, especially to an operating mechanism of double power change-over switch. BACKGROUND

[0002] The double power change-over switch is used for continuous power supply, when the normal power supply is suddenly out of order or power off, the standby power supply can be switched through the double power change-over switch, so that the electric equipment can still run normally.

[0003] According to the "electromagnetic drive assembly and double power change-over switch" of authorized announcement number CN212625229U, the disclosure relates to an electromagnetic drive assembly and a double power change-over switch with the electromagnetic drive assembly. The electromagnetic drive assembly comprises: a driving piece that can move from a first position to a second position under the action of an electromagnet, the driving piece is biased towards the first position, the first end of the driving piece is fixedly connected to the moving iron core of the electromagnet; a lever that is pivotally arranged on the driving piece; a rotating piece that is coupled with the moving contact, so that the rotation of the rotating piece can drive the moving contact to move, the rotating piece also comprises an actuating part; wherein the driving piece is offset relative to the longitudinal center line of the moving iron core, the lever extends towards the rotating piece, so that the contact position of the lever and the actuating part is located at or adjacent to the longitudinal center line of the moving iron core.

[0004] The above technical solution has the following defects:

[0005] 1. According to the drawings and in combination with the technical solution, the biasing elastic piece is arranged on both sides of the rotating piece, and the upper and lower stacking offset design strategy is adopted to avoid interference with the lever. However, the overall volume of the electromagnetic drive assembly is increased by using the upper and lower stacking offset design, which occupies the already scarce space. The space shortage not only occupies the use space of other components, but also puts forward more stringent requirements on their volume and function, which will increase the overall product manufacturing cost to some extent.

[0006] 2. With the continuous and long-term use of the double power change-over switch, the reset spring of the lever continuously experiences the stretching and energy release process after performing multiple rotation avoidance actions. This repeated mechanical action gradually reduces the elastic potential energy of the reset spring, which affects the reset performance of the lever and causes the double power change-over switch to malfunction.

[0007] 3. As the elastic potential energy of the reset spring gradually decreases, the lever cannot quickly and accurately return to its original position after passing the actuating part, which causes the phenomenon of jamming. This jamming not only affects the movement trajectory of the lever itself, but also adversely affects the smoothness of the entire operating mechanism, specifically prolonging the main and standby power switching time, resulting in a long idle period during the main and standby power switching, which cannot guarantee the continuity of power supply.

[0008] Therefore, the applicant has made beneficial designs and found a method to solve the above problems, and the technical solutions to be introduced below are generated in this background. SUMMARY

[0009] The utility model discloses a product with high safety and long service life.

[0010] To solve the above problems, the utility model adopts the following technical scheme.

[0011] An operating mechanism of a dual power supply change-over switch, comprising an upper contact assembly, a lower contact assembly and a transmission dial assembly, both ends of the transmission dial assembly are provided with a transmission mechanism for driving the upper contact assembly and the lower contact assembly to be in a conductive or non-conductive state; the transmission mechanism is provided with a retaining device for maintaining the transmission dial assembly in a post-activity position, both sides of the transmission dial assembly are provided with a driving assembly, the driving assembly is fixedly provided with a hook for driving the transmission dial assembly to rotate, when the hook is reset, the transmission dial assembly is provided with a first column for avoiding the hook to reset to an initial position, the upper contact assembly and the lower contact assembly are provided with a trigger device for feeding back a position signal to reset the hook.

[0012] Preferably, the upper contact assembly comprises an upper static base and a plurality of upper static contacts fixedly arranged on both sides of the upper static base.

[0013] Preferably, the lower contact assembly comprises a lower static base and a plurality of lower static contacts fixedly arranged on both sides of the lower static base, and a conductive piece is arranged between the lower static contact on one side and the upper static contact, and the upper static base and the lower static base are provided with end covers and form a sliding groove between the upper static base and the lower static base respectively.

[0014] Preferably, both sides of the end cover are provided with connecting shafts, and the end cover and both sides of the end cover are further provided with a recess for accommodating the trigger device, and the trigger device is a micro switch.

[0015] Preferably, the sliding groove is provided with a sliding block movable in a horizontal direction, the sliding block is provided with a trigger part for triggering the trigger device, both sides of the sliding block are provided with a movable contact electrically connected with the upper static contact or the lower static contact, one end of the sliding block is provided with a driving plate and is slidingly arranged on the end cover, and the driving plate is provided with a second limiting groove.

[0016] Preferably, the transmission mechanism comprises a transmission shaft, a transmission plate, a first linkage plate and a pushing block, the transmission shaft is fixedly arranged on the transmission dial assembly, two ends of the transmission shaft are provided with transmission members, one end of the transmission plate is provided with a first slot hole and is hingedly connected to the transmission members, the first linkage plate is hingedly connected to one of the connecting shafts of the end cover, and the hinged positions of the first linkage plates of the upper static base and the lower static base are oppositely arranged.

[0017] Preferably, the retaining device comprises a second linkage plate, the second linkage plate is hingedly connected to the other connecting shaft of the end cover, the transmission plate, the first linkage plate and the second linkage plate are hingedly connected to the pushing block, the pushing block is slidingly arranged in a second limiting slot, the second linkage plate is provided with a second slot hole for the movement of the pushing block, two ends of the second linkage plate are provided with stop rings and abut against the pushing block and the connecting shaft respectively, and the first spring is arranged between the stop rings.

[0018] Preferably, the transmission dial assembly comprises a dial, two second column bodies are arranged on two sides of the dial and are located behind the first column body, the dial is provided with a guide slot for the first column body to avoid the reset of the hook, the first column body and the second column body are provided with tension springs upward and downward, the first column body and the second column body are provided with first limiting slots for limiting the displacement of the tension springs, a distance is left between the tension springs for the movement of the hook, and the dial is further provided with an avoiding slot and is arranged on one side of the guide slot.

[0019] Preferably, the driving assembly comprises a coil assembly and a guide member fixedly arranged on one end face of the coil assembly, the coil assembly is provided with a moving iron core, one side of the hook is provided with an extension part and protrudes from one side of the moving iron core, the guide member is provided with a through slot for the movement of the moving iron core, two ends of the through slot are provided with limiting through holes, the limiting through holes are provided with a latch and pass through the hook, and the coil assembly is provided with a second spring and acts on the moving iron core.

[0020] Preferably, the head of the extension part is provided with an inclined protruding part for preventing the first column body or the second column body from being separated, and the extension part is provided with a guide surface for guiding the movement of the first column body at a position away from the protruding part.

[0021] Beneficial effects:

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] (1) The utility model discloses, through the first cylinder, realize the function of avoiding the hook to reset to the initial position and the expected technical effect, this design avoids the step of the hook reset action of technical scheme, makes the hook without external reset spring, can directly, smoothly drive transmission dial assembly to rotate, this design not only simplifies mechanical structure, still significantly reduced failure rate, brings higher stability and reliability for whole operating mechanism, ensures the long, stable operation of equipment.

[0024] (2) The utility model discloses, through the remaining space of upper contact assembly, lower contact assembly of keeping device, effectively maintain transmission dial assembly in the stable position after rotation, thereby omitting the biasing spring of both sides of rotating part in technical scheme, this structural design and optimization not only significantly reduce the overall size and space occupation of operating mechanism, still provide more spacious and flexible layout condition for other parts, effectively reduce the design difficulty, and bring the cost reduction of subsequent manufacturing link.

[0025] (3) The utility model discloses, in the main spare power supply switching process, the hook does not need to rely on external reset spring, directly omits reset action, and, the first cylinder and second cylinder between dial are provided with a plurality of tension springs, guarantee that the first cylinder can still reset rapidly, accurately after long-term execution avoidance activity, in addition, the release design of keeping device further accelerates the rotation speed of transmission dial assembly, thereby shortening the switching time of main spare power supply. DRAWINGS

[0026] Figure 1 It is the structural diagram of the operating mechanism of a kind of dual power supply transfer switch of the application;

[0027] Figure 2 It is the front view of the operating mechanism of a kind of dual power supply transfer switch of the application;

[0028] Figure 3 It is the internal structure diagram of the operating mechanism of a kind of dual power supply transfer switch of the application;

[0029] Figure 4 It is the explosion drawing of the operating mechanism of a kind of dual power supply transfer switch of the application;

[0030] Figure 5 It is the front view of the hook of the operating mechanism of a kind of dual power supply transfer switch of the application;

[0031] Figure 6 It is the operating mechanism sectional view of upper and lower contact assembly of a kind of dual power supply transfer switch of the application when not conducting;

[0032] Figure 7Figure 2 is a sectional view of the operating mechanism of the operating mechanism of the double power transfer switch when the upper contact assembly is turned on;

[0033] Figure 8 Figure 3 is a sectional view of the operating mechanism of the operating mechanism of the double power transfer switch when the lower contact assembly is turned on;

[0034] Figure 9 Figure 4 is a plan view of the operating mechanism of the operating mechanism of the double power transfer switch when the upper contact assembly is turned on;

[0035] Figure 10 Figure 5 is a plan view of the operating mechanism of the operating mechanism of the double power transfer switch when the lower contact assembly is not turned on;

[0036] Figure 11 Figure 6 is a plan view of the operating mechanism of the operating mechanism of the double power transfer switch when the upper contact assembly is not turned on;

[0037] Figure 12 Figure 7 is a plan view of the operating mechanism of the operating mechanism of the double power transfer switch when the lower contact assembly is turned on;

[0038] The correspondence between the reference signs in the figures and the component names is as follows:

[0039] Reference sign: 1, upper contact assembly; 2, lower contact assembly; 3, transmission dial assembly; 4, transmission mechanism; 5, retaining device; 6, driving assembly; 7, end cover; 8, sliding block;

[0040] 11, upper static base; 12, upper static contact;

[0041] 21, lower static base; 22, lower static contact; 23, conductive part;

[0042] 31, first column; 32, dial; 33, second column; 34, guide groove; 35, tension spring; 36, avoidance groove; 37, first limiting groove;

[0043] 41, transmission shaft; 42, transmission plate; 43, first linkage plate; 44, pushing block; 45, transmission part;

[0044] 421, first slot hole;

[0045] 51, second linkage plate; 52, blocking ring; 53, first spring;

[0046] 511, second slot hole;

[0047] 61, contact hook; 62, coil assembly; 63, guide part; 64, moving iron core; 65, latch; 66, second spring;

[0048] 611, extension; 612, protrusion; 613, guide surface;

[0049] 631, through slot; 632, limiting through hole;

[0050] 71, sliding groove; 72, connecting shaft; 73, triggering device; 74, groove;

[0051] 81, triggering part; 82, movable contact; 83, driving plate; 84, second limiting groove. DETAILED DESCRIPTION

[0052] The technical solutions of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.

[0053] In the description of the utility model, it should be understood that the orientation or position relation indicated by the terms such as 'up', 'down', 'left', 'right' in the specification is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0054] In the embodiments of the utility model, 'and / or' is only a kind of description of the association relation of associated object, it can represent three kinds of relations, for example, A and / or B, can represent: three cases of existence A alone, existence A and B simultaneously, existence B alone.In addition, the character ' / ' in this paper generally indicates that the front and rear associated objects are a kind of 'or' relationship.

[0055] Reference Example Figures 1 to 12 An operating mechanism of a dual-power change-over switch, comprising an upper contact assembly 1, a lower contact assembly 2 and a transmission dial assembly 3, the transmission dial assembly 3 is provided with a transmission mechanism 4 at both ends, for driving the power of the upper contact assembly 1 and the lower contact assembly 2 to be in a conductive or non-conductive state; the transmission mechanism 4 is provided with a retaining device 5 for maintaining the transmission dial assembly 3 in the active rear position, the transmission dial assembly 3 is provided with a driving assembly 6 on both sides, the driving assembly 6 is fixedly provided with a trigger hook 61 for driving the transmission dial assembly 3 to rotate, when the trigger hook 61 resets, the transmission dial assembly 3 is provided with a first column 31 for avoiding the trigger hook 61 to reset to the initial position, the upper contact assembly 1 and the lower contact assembly 2 are provided with a triggering device 73 for feeding back the position signal to reset the trigger hook 61;

[0056] It is worth mentioning that the upper contact assembly 1 comprises an upper static base 11 and a plurality of upper static contacts 12 fixed on both sides of the upper static base 11, and the upper static contacts 12 and the lower static contacts 22 are electrically connected with the main and standby power supply lines of the power supply;

[0057] It is worth mentioning that the lower contact assembly 2 comprises a lower static base 21 and a plurality of lower static contacts 22 fixed on both sides of the lower static base 21, and a conductive part 23 is arranged between the lower static contacts 22 on one side and the upper static contacts 12, and the upper static base 11 and the lower static base 21 are provided with end covers 7 and form sliding grooves 71 between the upper static base 11 and the lower static base 21 respectively, and the conductive part 23 makes the upper static contacts 12 and the lower static contacts 22 on this side form a common terminal, which not only reduces the number of required wiring, reduces the cost of materials and installation, but also improves the efficiency of wiring and simplifies the wiring process, and the end cover 7 prevents foreign matter from contacting the upper static contacts 12 and the lower static contacts 22 and the moving contact 82, and the sliding groove 71 provides accurate guiding action for the sliding block 8;

[0058] It is worth mentioning that the two sides of the end cover 7 are provided with connecting shafts 72, and the end cover 7 and the two sides of the end cover 7 are further provided with recesses 74 accommodating trigger devices 73, the trigger devices 73 are set as micro switches, the connecting shafts 72 provide support points for the first linkage plate 43 and the second linkage plate 51, and cooperate with the first linkage plate 43 and the second linkage plate 51 to prevent the pushing block 44 from being separated from the second limiting groove 84, the recess 74 provides a stable support point for the trigger device 73, and helps to quickly position during assembly, one of the trigger devices 73 of the upper contact assembly 1 and the lower contact assembly 2 is electrically connected with the main control circuit board in the dual power switch, when the trigger device 73 is triggered, the main control circuit board receives the feedback signal of the sliding block 8 being in place, and the main control circuit board sends a reset command to the driving assembly 6 according to the feedback signal to make the driving assembly 6 power off and make the contact hook 61 reset, and the other trigger device 73 is normally in an idle state, if the customer needs an external main and standby power closing warning lamp, it can be electrically connected with the corresponding trigger device 73, which effectively improves the product expandability and practicality, since the main control circuit board belongs to the prior art in the technical field, it will not be described in detail here, and it does not belong to the technical points to be protected by the present application;

[0059] It is worth mentioning that the sliding groove 71 is provided with a sliding block 8 which can move horizontally, the sliding block 8 is provided with a trigger part 81 for triggering the trigger device 73, the two sides of the sliding block 8 are provided with moving contacts 82 electrically connected with the upper static contacts 12 or the lower static contacts 22, one end of the sliding block 8 is provided with a driving plate 83 and is slidingly arranged on the end cover 7, the driving plate 83 is provided with a second limiting groove 84, and the moving contact 82 can be clamped on the upper static contact 12 or the lower static contact 22 or apply a downward force on the upper static contact 12 or the lower static contact 22, thereby improving the stability of electrical connection, and the second limiting groove 84 limits the movement range of the pushing block 44;

[0060] It is worth mentioning that the transmission mechanism 4 includes a transmission shaft 41, a transmission plate 42, a first linkage plate 43, a push block 44, the transmission shaft 41 is fixedly arranged on the transmission dial assembly 3, both ends of the transmission shaft 41 are provided with transmission members 45, one end of the transmission plate 42 is provided with a first slot hole 421 and is hingedly connected to the transmission member 45, the first linkage plate 43 is hingedly connected to one of the connecting shafts 72 of the end cover 7, the hinged positions of the first linkage plates 43 of the upper static base 11 and the lower static base 21 are oppositely arranged, after the transmission shaft 41 rotates following the dial 32, the transmission plate 42 is driven to rotate by the transmission member 45, and then the first linkage plate 43 and the second linkage plate 51 are synchronously driven to move in linkage, so as to ensure the smoothness and coordination of the main and standby power supply switching, and drive the push block 44 to move in the horizontal direction in the second limiting slot 84, so as to drive the sliding block 8 to move, the range of movement of the push block 44 is limited under the premise that the transmission member 45 does not contact and apply a pushing force to any end of the first slot hole 421, so that any upper contact assembly 1 or lower contact assembly 2 is not conductive after any upper contact assembly 1 or lower contact assembly 2 is conductive;

[0061] It is worth mentioning that the retaining device 5 includes a second linkage plate 51, the second linkage plate 51 is hingedly connected to the other connecting shaft 72 of the end cover 7, the transmission plate 42, the first linkage plate 43 and the second linkage plate 51 are hingedly connected to the push block 44, the push block 44 is slidingly arranged in the second limiting slot 84, the second linkage plate 51 is provided with a second slot hole 511 for the movement of the push block 44, both ends of the second linkage plate 51 are provided with stop rings 52 and abut against the push block 44 and the connecting shaft 72 respectively, and the first spring 53 is arranged between the stop rings 52, the remaining space of the upper contact assembly 1 and the lower contact assembly 2 is fully utilized by the retaining device 5, the stable position of the transmission dial assembly 3 after rotation is effectively maintained, so as to omit the biasing elastic members on both sides of the rotating member in the technical scheme, this structural design and optimization not only significantly reduces the overall volume and space occupation of the operating mechanism, but also provides more spacious and flexible layout conditions for other parts, effectively reduces the design difficulty, and reduces the cost in the subsequent manufacturing link, the second linkage plate 51 is oppositely arranged with the upper contact assembly 1 and the lower contact assembly 2, which makes the first spring 53 also oppositely arranged, under this structure, when neither the upper contact assembly 1 nor the lower contact assembly 2 is conductive, the first spring 53 remains in a natural state and is not subjected to any extrusion, once any contact assembly enters a conductive state, the first linkage plate 43 and the second linkage plate 51 of the upper contact assembly 1 and the lower contact assembly 2 are in a V-shaped structure, and the V-shaped structures of the upper contact assembly 1 and the lower contact assembly 2 are oppositely arranged, the energy of the first spring 53 is released to enable the V-shaped structure to be maintained, so as to keep the dial 32 in the position after rotation;

[0062] It is worth mentioning that the transmission dial assembly 3 comprises a dial 32, two second columns 33 are arranged on both sides of the two dials 32 and located behind the first column 31, the dial 32 is provided with a guide groove 34 for avoiding the reset of the touch hook 61 by the first column 31, the upper and lower parts of the first column 31 and the second column 33 are provided with tension springs 35, the first column 31 and the second column 33 are provided with first limiting grooves 37 for limiting the displacement of the tension springs 35, a distance is left between the tension springs 35 for the movement of the touch hook 61, the dial 32 is further provided with an avoidance groove 36 arranged on one side of the guide groove 34, the first column 31 is used to avoid the reset of the touch hook 61 to the initial position, the design avoids the step of the reset action of the touch hook 61, so that the touch hook 61 can directly and smoothly drive the transmission dial assembly 3 to rotate without the need for an external reset spring, which not only simplifies the mechanical structure, but also significantly reduces the failure rate, brings higher stability and reliability to the entire operating mechanism, ensures the long-term and stable operation of the equipment, the guide groove 34 and the avoidance groove 36 are designed to be inclined to the middle position of the dial 32, the guide groove 34 provides a guide function for the quick avoidance of the touch hook 61 by the first column 31, the avoidance groove 36 avoids the dial 32 from touching the guide 63 after rotation and interfering with it, ensuring the smoothness of the movement of the touch hook 61, in the process of switching between the main and standby power supplies, the touch hook 61 does not need to rely on an external reset spring, directly omitting the reset action, and a plurality of tension springs 35 are arranged between the first column 31 and the second column 33, ensuring that the first column 31 can be quickly and accurately reset after long-term avoidance, effectively preventing the jamming phenomenon caused by the decrease in elasticity of a single tension spring 35, and providing protection for the stable operation of the equipment;

[0063] It is worth mentioning that the driving assembly 6 comprises a coil assembly 62 and a guide 63 fixed to one end face of the coil assembly 62, the coil assembly 62 is internally provided with a moving iron core 64, one side of the contact hook 61 is provided with an extension 611 and protrudes from one side of the moving iron core 64, the guide 63 is provided with a through slot 631 for the moving iron core 64 to move, both ends of the through slot 631 are provided with limiting through holes 632, the limiting through holes 632 are provided with a latch 65 and pass through the contact hook 61, the coil assembly 62 is internally provided with a second spring 66 and acts on the moving iron core 64, the through slot 631 provides more accurate guiding movement for the moving iron core 64, and the design enables the moving iron core 64 to still maintain the performance of rapid and accurate reset after experiencing multiple reciprocating actions, thereby effectively avoiding the problem that the contact hook 61 is stuck during operation, the second spring 66 enables the moving iron core 64 to quickly reset after driving the dial 32 to rotate, and applies sufficient pushing force to the first column 31 to enable the first column 31 to give way, the limiting through holes 632 limit the reciprocating range of the contact hook 61, both ends of the latch 65 are usually provided with a snap spring to prevent the latch 65 from being separated from the limiting through holes 632, and a gasket is arranged to reduce friction with the guide 63 or other similar components to ensure that the latch 65 is fixed, and the design belongs to the known technology and will not be described in detail here.

[0064] It is worth mentioning that the head of the extension 611 is provided with an inclined protruding portion 612 for preventing the first column 31 or the second column 33 from being separated, the extension 611 is provided with a guide surface 613 for guiding the first column 31 to move at a position away from the protruding portion 612, the protruding portion 612 ensures that the contact hook 61 is stable and does not separate when contacting the first column 31 or the second column 33, the guide surface 613 not only effectively guides the contact hook 61, but also significantly reduces the pushing force and the friction, so that the avoiding action of the first column 31 is more smooth, and the operation efficiency of the linkage operation mechanism is improved.

[0065] The use principle of the utility model will be described as follows:

[0066] Embodiment 1

[0067] The initial action state of the operation mechanism is shown in the accompanying Figure 6 When the right coil assembly 62 of the dial 32 is powered, the moving iron core 64 is affected by the magnetic force of the coil assembly 62 and moves inward, the contact hook 61 moves towards the first column 31, and drives the dial 32 to rotate after contacting the first column 31, at this time, the second column 33 on the right side of the dial 32 is away from one side of the right coil assembly 62, and the second column 33 on the left side of the dial 32 is located on the movement track of the left contact hook 61, and the action state of the transmission dial assembly 3 is shown in the accompanying Figure 7 ;

[0068] As the drive shaft 41 moves together with the dial 32, the drive plate 42 drives the push block 44 of the upper contact assembly 1 away from the initial position of the second limit groove 84 and gradually approaches the other end of the second limit groove 84 and the operating mechanism. As the first linkage plate 43 and the second linkage plate 51 form a straight line, the first spring 53 is compressed and stores energy, and is in a critical state at this time.

[0069] As the dial 32 continues to rotate, when the pin 65 contacts the other end face of the limiting through hole 632, the first linkage plate 43 and the second linkage plate 51 of the upper contact assembly 1 form a V shape. The first spring 53 releases energy, causing the push block 44 to release sufficient pushing force to the drive plate 83, causing the slider 8 to jump and move so that the moving contact 82 quickly contacts the upper stationary contact 12, thereby making the upper contact assembly 1 conductive and completing the power connection of the upper contact assembly 1. The remaining pushing force of the push block 44 causes the transmission plate 42 to continue to move forward a certain distance.

[0070] Although the transmission mechanism 4 of the lower contact assembly 2 also performs the same action, due to the design of the first slot 421, the lower contact assembly 2 is still in a non-conductive state at this time. At this time, the lower contact assembly 2 and the upper contact assembly 1 are in an opposing V-shape. The operating states of the upper contact assembly 1 and the lower contact assembly 2 are shown in the attached figure. Figure 9 and attached Figure 10 As shown;

[0071] Example 2

[0072] Since the first springs 53 of the upper contact assembly 1 and the lower contact assembly 2 are in a state of mutual opposition and holding, they provide stable support for the dial 32 to prevent it from shifting. At the same time, the trigger part 81 of the upper contact assembly 1 has triggered the trigger device 73, causing the coil assembly 62 on the right to lose power. The second spring 66 releases its elastic force to quickly reset the moving iron core 64. The back of the hook 61 abuts against the first column 31 and pushes it away from the hook 61 in the direction guided by the guide groove 34. At this time, the tension spring 35 is stretched by the first column 31 and enters the energy storage state. When the hook 61 is reset to the initial position, the first column 31 is disengaged from the hook 61, and the tension spring 35 releases its energy to quickly reset the first column 31, preparing for the next movement of the dial 32.

[0073] Example 3

[0074] When the left coil assembly 62 of the dial 32 is energized, the moving iron core 64 is affected by the magnetic force of the coil assembly 62 and moves inward. The hook 61 moves towards the second column 33. After contacting the second column 33, it drives the dial 32 to rotate and reset. At this time, the second column 33 on the right side of the dial 32 gradually approaches the side of the right coil assembly 62, and the first column 31 on the left side of the dial 32 gradually moves onto the reset trajectory of the hook 61.

[0075] As the first linkage plate 43 and the second linkage plate 51 of the upper contact assembly 1 gradually change towards a straight line shape, the pushing block 44 of the upper contact assembly 1 gradually approaches the initial position of the second limiting groove 84. At this time, the holding device 5 is in a critical state, and the dial 32 continues to rotate. When the pin 65 touches the other end face of the limiting through hole 632, the first spring 53 releases energy, causing the pushing block 44 to release sufficient pushing force to the drive plate 83, causing the slider 8 to jump and move, causing the moving contact 82 to quickly separate from the upper stationary contact 12. The transmission mechanism 4 returns to the initial position as shown in the attached figure. Figure 1 As shown;

[0076] As the triggering device 73 of the upper contact assembly 1 resets, the operating mechanism returns to its initial position as shown in the attached figure. Figure 6 As shown, if the main control circuit board does not receive a signal that the triggering device 73 of the lower contact assembly 2 is triggered, the main control circuit board will send a reset command to the left coil assembly 62 to de-energize it, and then send an action signal to the left coil assembly 62 again to energize it.

[0077] As the contact hook 61 of the left coil assembly 62 quickly resets, the contact hook 61 of the left coil assembly 62 moves again toward the first column 31, driving the dial 32 to rotate. The operating state of the transmission dial assembly 3 is shown in the attached figure. Figure 8 As shown, similarly, the lower contact assembly 2 also performs the steps required by the upper contact assembly 1 when conducting. The pushing block 44 of the lower contact assembly 2 gradually moves away from the initial position of the second limiting groove 84 and gradually approaches the other end of the second limiting groove 84 and the operating mechanism.

[0078] When the pin 65 abuts against the other end face of the limiting through hole 632, the first linkage plate 43 and the second linkage plate 51 of the lower contact assembly 2 form a V shape. The first spring 53 releases energy, causing the push block 44 to release sufficient pushing force to the drive plate 83, causing the slider 8 to jump and move so that the moving contact 82 quickly contacts the lower stationary contact 22, thereby turning on the power supply to the lower contact assembly 2. At the same time, the trigger part 81 of the lower contact assembly 2 triggers the trigger device 73, causing the coil assembly 62 on the left side to de-energize and quickly reset. The operating states of the upper contact assembly 1 and the lower contact assembly 2 are as shown in the attached figure. Figure 11 and attached Figure 12 As shown;

[0079] The above steps enable rapid switching between primary and backup power supplies. It is important to note that this switching occurs within milliseconds, making it not only fast and efficient but also unaffected by the continuity and stability of the power supply.

[0080] The above design scheme can enable the product to achieve advantages such as low failure rate, reduced manufacturing cost, improved space utilization, and faster switching speed between main and backup power supplies.

[0081] The above is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the utility model specific implementation is limited to these descriptions. For ordinary skilled in the art 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 should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. An operating mechanism of a dual power transfer switch, comprising an upper contact assembly (1), a lower contact assembly (2), a transmission dial assembly (3), characterized in that: The transmission dial assembly (3) is provided with a transmission mechanism (4) at both ends for driving the power supply of the upper contact assembly (1) and the lower contact assembly (2) to be in the on or off state; the transmission mechanism (4) is provided with a retaining device (5) for maintaining the transmission dial assembly (3) in the active rear position, both sides of the transmission dial assembly (3) are provided with a driving assembly (6), the driving assembly (6) is fixedly provided with a hook (61) for driving the transmission dial assembly (3) to rotate, when the hook (61) resets, the transmission dial assembly (3) is provided with a first column (31) for avoiding the hook (61) to reset to the initial position, the upper contact assembly (1) and the lower contact assembly (2) are provided with a trigger device (73) for feeding back the position signal to reset the hook (61).

2. The operating mechanism of a dual power change-over switch according to claim 1, characterized in that: The upper contact assembly (1) comprises an upper static base (11) and a plurality of upper static contacts (12) fixedly arranged on both sides of the upper static base (11).

3. The operating mechanism of a dual power change-over switch according to claim 2, characterized in that: The lower contact assembly (2) comprises a lower static base (21) and a plurality of lower static contacts (22) fixedly arranged on both sides of the lower static base (21), and a conductive part (23) is arranged between the lower static contact (22) on one side and the upper static contact (12). The upper static base (11) and the lower static base (21) are provided with an end cover (7), and a sliding groove (71) is formed between the upper static base (11) and the lower static base (21), respectively.

4. The operating mechanism of a dual power change-over switch according to claim 3, characterized in that: Both sides of the end cover (7) are provided with a connecting shaft (72), and the end cover (7) and both sides of the end cover (7) are further provided with a groove (74) for accommodating the trigger device (73), and the trigger device (73) is arranged as a micro switch.

5. The operating mechanism of a dual power change-over switch according to claim 4, characterized in that: The sliding groove (71) is provided with a sliding block (8) which can move horizontally, the sliding block (8) is provided with a trigger part (81) for triggering the trigger device (73), both sides of the sliding block (8) are provided with a movable contact (82) electrically connected with the upper static contact (12) or the lower static contact (22), one end of the sliding block (8) is provided with a driving plate (83) which is slidingly arranged on the end cover (7), and the driving plate (83) is provided with a second limiting groove (84).

6. The operating mechanism of a dual mains transfer switch according to claim 5, characterized in that: The transmission mechanism (4) comprises a transmission shaft (41), a transmission plate (42), a first linkage plate (43) and a pushing block (44), the transmission shaft (41) is fixedly arranged on the transmission dial assembly (3), both ends of the transmission shaft (41) are provided with a transmission part (45), one end of the transmission plate (42) is provided with a first slot hole (421) and is hingedly connected to the transmission part (45), the first linkage plate (43) is hingedly connected to one of the connecting shafts (72) of the end cover (7), and the hinged positions of the first linkage plates (43) of the upper static base (11) and the lower static base (21) are oppositely arranged.

7. The operating mechanism of a dual mains transfer switch according to claim 6, characterized in that: The retaining device (5) comprises a second linkage plate (51) hinged to another connecting shaft (72) of the end cover (7), the transmission plate (42), the first linkage plate (43) and the second linkage plate (51) are hinged to the pushing block (44) which is slidingly arranged in the second limiting groove (84), the second linkage plate (51) is provided with a second slot hole (511) for the movement of the pushing block (44), the two ends of the second linkage plate (51) are provided with stop rings (52) which abut against the pushing block (44) and the connecting shaft (72) respectively, and the first spring (53) is arranged between the stop rings (52).

8. The operating mechanism of a dual mains transfer switch according to claim 1, characterized in that: The transmission dial assembly (3) comprises a dial (32), two second cylinders (33) are arranged on the two sides of the two dials (32) and located behind the first cylinder (31), the dial (32) is provided with a guide groove (34) for the reset of the first cylinder (31) avoiding the hook (61), the upper and lower portions of the first cylinder (31) and the second cylinder (33) are provided with the tension spring (35), the first cylinder (31) and the second cylinder (33) are provided with the first limiting groove (37) for limiting the displacement of the tension spring (35), the tension spring (35) is left with a distance for the movement of the hook (61), and the dial (32) is further provided with an avoiding groove (36) arranged on one side of the guide groove (34).

9. The operating mechanism of a dual mains transfer switch according to claim 1, characterized in that: The driving assembly (6) comprises a coil assembly (62) and a guide piece (63) fixed on one end face of the coil assembly (62), the coil assembly (62) is provided with a moving iron core (64), one side of the hook (61) is provided with an extension (611) protruding from one side of the moving iron core (64), the guide piece (63) is provided with a through groove (631) for the movement of the moving iron core (64), the two ends of the through groove (631) are provided with limiting through holes (632), the limiting through holes (632) are provided with the bolt (65) penetrating through the hook (61), and the coil assembly (62) is provided with the second spring (66) acting on the moving iron core (64).

10. The operating mechanism of a dual mains transfer switch according to claim 9, characterized in that: The head of the extension (611) is provided with an inclined protruding portion (612) for preventing the first cylinder (31) or the second cylinder (33) from being separated, and the extension (611) is provided with a guide surface (613) for guiding the movement of the first cylinder (31) at a position away from the protruding portion (612).

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