Dual power transfer switch

Abstract

This utility model belongs to the field of switch technology and discloses a dual-power transfer switch, including a housing, a micro switch, and a sliding cover. The housing has a handle operation hole, a sliding groove, and a first opening. The sliding groove has a first locking slot and a second locking slot at both ends. The micro switch is disposed inside the housing and opposite the first opening. The sliding cover is slidably mounted on the housing and has a first locking protrusion and a trigger portion passing through the first opening. The first locking protrusion is slidably connected to the sliding groove and can be locked into either the first or second locking slot. When the first locking protrusion is locked into the first locking slot, the sliding cover covers the handle operation hole, and the trigger portion triggers or moves away from the micro switch. When the first locking protrusion is locked into the second locking slot, the handle operation hole is exposed, and the trigger portion moves away from or triggers the micro switch. This dual-power transfer switch allows for switching between automatic and manual operation via the sliding cover, providing convenient operation. Furthermore, during automatic operation, the sliding cover can cover the handle operation hole.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a dual power supply transfer switch. Background Technology

[0002] Dual power transfer switches are mainly used in dual power supply systems. Their function is to automatically switch the load circuit from the main power supply to the backup power supply when the main power supply fails, thereby ensuring continuous power supply to the load. They are widely used in important places such as hospitals, airports, and docks where power outages are not allowed.

[0003] Dual power transfer switches have manual and automatic operation modes. In automatic mode, the switch automatically switches power sources; in manual mode, it is operated manually via a handle. However, the handle hole for operation is often exposed, allowing dust and other impurities to easily enter the switch, causing the operating mechanism to rust and jam, thus affecting its lifespan.

[0004] Therefore, there is an urgent need to propose a dual power supply transfer switch to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a dual power transfer switch, which allows for switching between automatic and manual operation via a sliding cover. This makes operation convenient, and during automatic operation, the sliding cover can block the handle operation hole, reducing the risk of dust entering the dual power transfer switch through the handle operation hole and thus extending the service life of the dual power transfer switch.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Dual power transfer switch, including:

[0008] The cover has a handle operation hole, a slide groove and a first opening. The slide groove has a first slot and a second slot communicating with itself at both ends. The first slot is closer to the handle operation hole than the second slot.

[0009] A micro switch is disposed inside the housing and opposite to the first opening;

[0010] A sliding cover is slidably mounted on the housing. The sliding cover has a first latching protrusion and a trigger portion that passes through the first opening. The first latching protrusion is slidably connected to the sliding groove and can be latched into the first or second latching groove.

[0011] When the first protrusion is engaged with the first slot, the sliding cover covers the handle operation hole, and the trigger part cooperates with the micro switch to switch the dual power supply switch to automatic operation mode; when the first protrusion is engaged with the second slot, the handle operation hole is exposed, and the trigger part cooperates with the micro switch to switch the dual power supply switch to manual operation mode.

[0012] Optionally, the cover is further provided with a second opening, which is disposed opposite to the first opening along a sliding direction perpendicular to the sliding cover; the two ends of the sliding cover are respectively provided with a first elastic buckle and a second elastic buckle, the first elastic buckle is connected to the trigger part, the first elastic buckle is elastically pressed against the inner wall of the cover through the first opening and can slide relative to the cover, and the second elastic buckle is elastically pressed against the inner wall of the cover through the second opening and can slide relative to the cover.

[0013] Optionally, one of the cover and the sliding cover is provided with a sliding guide portion extending along the sliding direction of the sliding cover, and the other is provided with a protrusion, the protrusion being slidably connected to the sliding guide portion.

[0014] Optionally, the first card protrusion is hemispherical, and the shapes of the first card slot and the second card slot are adapted to the shape of the first card protrusion;

[0015] And / or, the cover is provided with a groove, the sliding cover is slidably engaged with the groove, the groove wall near the handle operation hole is provided with a third slot, the side of the sliding cover is provided with a second protrusion corresponding to the third slot, when the first protrusion is engaged with the first slot, the second protrusion is engaged with the third slot.

[0016] Optionally, the dual power supply transfer switch further includes a handle, the handle including a grip and an operating shaft, one end of the operating shaft being connected to the grip;

[0017] The operating shaft is made of metal; and / or, the cover is provided with a mounting hole, and the inner wall of the cover is provided with a sleeve communicating with the mounting hole. Part of the grip and the operating shaft are inserted into the sleeve through the mounting hole. The sleeve is provided with a notch at one end near the mounting hole, and an elastic arm is provided at the notch. The grip is provided with a third locking protrusion, and the third locking protrusion engages with the elastic arm.

[0018] Optionally, the dual power supply transfer switch further includes a contact support, which includes multiple coaxial and spaced mounting portions, each mounting portion having a contact mounting space, and each contact mounting space having a moving contact installed therein.

[0019] The mounting part has through holes on both opposite side walls near the contact mounting space; the connecting shaft passes through the moving contact, and the two ends of the connecting shaft extending out of the moving contact are respectively connected to the two through holes. On the plate surface of the side wall away from the contact mounting space, a limiting flange is provided at the outer edge of the through hole. The limiting flange is clearance-fitted with the base, and the base is used to support the mounting of the contact.

[0020] Optionally, one end of the contact support is provided with a connecting part, which is connected to the output disk. The output disk is used to drive the contact support to rotate through the connecting part under external force.

[0021] The connecting part is provided with a plurality of protrusions, and the output disk is provided with an embedding hole corresponding to each of the protrusions. The protrusions are embedded into the corresponding embedding holes; and / or, the connecting part and the output disk are riveted together by rivets.

[0022] Optionally, the dual power supply transfer switch further includes an operating mechanism, which includes a bracket, and the bottom of the bracket is provided with a wiring hole;

[0023] And / or, the bracket includes a first mounting plate and a second mounting plate disposed opposite to each other, the first mounting plate having a first connecting ear on its surface near the second mounting plate, the end of the first connecting ear being detachably connected to the second mounting plate, and the second mounting plate having a second connecting ear on its surface near the first mounting plate, the end of the second connecting ear being detachably connected to the first mounting plate.

[0024] Optionally, the dual power supply transfer switch further includes an operating mechanism, which includes a bracket, an output disk, a positioning plate, and a limiting structure. The output disk is rotatably connected to the bracket, and a positioning block is provided on the output disk. On the bracket, the positioning plates are rotatably connected to opposite sides of the center line of the output disk, and the positioning block is located between the lower ends of the two positioning plates.

[0025] The limiting structure includes a fixed plate and a limiting assembly. The fixed plate includes a fixed part disposed on the outer side of the two positioning plates. Each fixed part is provided with a limiting assembly. The limiting assembly includes a push rod and an elastic element. The push rod is slidably connected to the fixed part and is opposite to the upper end of the positioning plate. The elastic element is configured to have a tendency to drive the push rod to push the positioning plate to rotate, so that the two positioning plates move closer to each other.

[0026] Optionally, the fixing part is provided with a first limiting arm, and a sliding guide hole is formed between the first limiting arm and the fixing part. The push rod is slidably connected in the sliding guide hole. The push rod is provided with a limiting ear, and a fourth slot is formed between the limiting ear and the push rod. The fourth slot can engage with the first limiting arm.

[0027] And / or, the fixing part is provided with a first connecting post and a second limiting arm, the end of the top rod away from the positioning plate is provided with a second connecting post, one end of the elastic member is sleeved on the first connecting post, the other end is sleeved on the second connecting post, a limiting space is formed between the second limiting arm and the fixing part, and the elastic member is located in the limiting space.

[0028] The beneficial effects of this utility model are:

[0029] This invention provides a dual-power transfer switch, comprising a housing, a micro switch, and a sliding cover. The sliding cover is slidably mounted on the housing. A first latching protrusion on the sliding cover engages with a groove on the housing when the cover slides. When the sliding cover slides to one end of the groove and engages with the first latching groove, a trigger on the sliding cover engages with the micro switch, at which point the dual-power transfer switch switches to automatic operation mode, and the sliding cover covers the handle operation hole. When the sliding cover slides to the other end of the groove and engages with the second latching groove, the trigger engages with the micro switch, at which point the dual-power transfer switch switches to manual operation mode, and the handle operation hole is exposed for handle operation. In other words, the dual-power transfer switch can switch operating modes by sliding the sliding cover, making operation convenient. Furthermore, in automatic operation mode, the sliding cover covers the handle operation hole, reducing the risk of dust entering the dual-power transfer switch through the handle operation hole, thus extending the service life of the dual-power transfer switch.

[0030] The first or second slot, in conjunction with the first protrusion, enables the dual power transfer switch to reliably remain in either automatic or manual operation mode, thereby improving the reliability of the dual power transfer switch and simplifying its structure for easier processing and assembly.

[0031] The sliding cover can be guided by the cooperation of the sliding groove and the first locking protrusion, so that the sliding cover can be more accurately engaged with the first or second locking groove, thereby improving the reliability of the dual power supply changeover switch in automatic and manual operation modes. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the dual power supply transfer switch provided in Embodiment 1 of this utility model in automatic operation mode;

[0034] Figure 2 This is a schematic diagram of the dual power supply changeover switch provided in Embodiment 1 of this utility model in manual operation mode;

[0035] Figure 3 This is a schematic diagram of the interaction between the trigger part and the micro switch provided in Embodiment 1 of this utility model;

[0036] Figure 4 This is a partial schematic diagram of the dual power supply transfer switch provided in Embodiment 1 of this utility model after the sliding cover has been removed;

[0037] Figure 5 This is a schematic diagram of the sliding cover from one perspective, provided in Embodiment 1 of this utility model;

[0038] Figure 6 This is a schematic diagram of the sliding cover from another perspective, as provided in Embodiment 1 of this utility model;

[0039] Figure 7 This is a schematic diagram of the handle structure from one perspective provided in Embodiment 1 of this utility model;

[0040] Figure 8 This is a schematic diagram of the handle from another perspective provided in Embodiment 1 of this utility model;

[0041] Figure 9 This is a partial schematic diagram of the cover provided in Embodiment 1 of this utility model;

[0042] Figure 10 This is a diagram showing the cooperation between the contact support and the moving contact provided in Embodiment 2 of this utility model;

[0043] Figure 11 This is a schematic diagram of the moving contact blade from one perspective, provided in Embodiment 2 of this utility model;

[0044] Figure 12 This is a schematic diagram of the moving contact blade from another perspective, as provided in Embodiment 2 of this utility model;

[0045] Figure 13This is an assembly diagram of the contact support and output disk provided in Embodiment 2 of this utility model;

[0046] Figure 14 This is an exploded view of the contact support and output disk provided in Embodiment 2 of this utility model;

[0047] Figure 15 This is a schematic diagram of the operating mechanism provided in Embodiment 3 of this utility model. Figure 1 ;

[0048] Figure 16 This is a schematic diagram of the operating mechanism provided in Embodiment 3 of this utility model. Figure 2 ;

[0049] Figure 17 This is a schematic diagram of the operating mechanism provided in Embodiment 4 of this utility model;

[0050] Figure 18 yes Figure 17 Enlarged view at point A.

[0051] In the picture:

[0052] 100. Cover; 110. Handle operating hole; 120. Slide groove; 121. First slot; 122. Second slot; 130. First opening; 140. Second opening; 150. Protrusion; 160. Groove; 161. Third slot; 170. Mounting hole; 180. Sleeve; 181. Notch; 182. Elastic arm;

[0053] 200. Micro switch;

[0054] 300, Sliding cover; 310, First latching protrusion; 320, Triggering part; 330, First elastic latch; 340, Second elastic latch; 350, Sliding guide part; 360, Second latching protrusion;

[0055] 400, Handle; 410, Grip; 411, Third latching protrusion; 420, Operating shaft;

[0056] 500. Contact support; 510. Mounting part; 511. Contact mounting space; 512. Side wall; 513. Through hole; 514. Limiting flange; 530. Connecting part; 531. Protrusion; 532. Rivet;

[0057] 600, Moving contact; 610, Moving contact blade; 611, Recess; 612, First boss; 613, Second boss; 620, Spring piece; 630, Connecting shaft;

[0058] 700. Operating mechanism; 710. Bracket; 711. First mounting plate; 7111. First connecting ear; 712. Second mounting plate; 7121. Second connecting ear; 713. Third mounting plate; 7131. Wiring hole; 720. Output plate; 721. Embedded hole; 722. Positioning block; 730. Positioning plate; 740. Limiting structure; 741. Fixing plate; 7411. Fixing part; 7412. First limiting arm; 7413. First connecting post; 7414. Second limiting arm; 742. Limiting assembly; 7421. Top rod; 74211. Limiting ear; 74212. Second connecting post; 7422. Elastic element. Detailed Implementation

[0059] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0060] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0063] Example 1

[0064] This embodiment provides a dual power transfer switch, which allows for switching between automatic and manual operation via a sliding cover. This makes operation convenient, and during automatic operation, the sliding cover can block the handle operation hole, reducing the risk of dust entering the dual power transfer switch through the handle operation hole and thus extending the service life of the dual power transfer switch.

[0065] Specifically, such as Figures 1-6 As shown, the dual power supply changeover switch includes a housing 100, a micro switch 200, and a sliding cover 300.

[0066] The cover 100 has a handle operation hole 110, a slide groove 120, and a first opening 130. The slide groove 120 has a first slot 121 and a second slot 122 at both ends, communicating with itself. The first slot 121 is positioned opposite the second slot 122 and closer to the handle operation hole 110. A micro switch 200 is disposed inside the cover 100 and opposite the first opening 130. A sliding cover 300 is slidably mounted on the cover 100. The sliding cover 300 has a first latching protrusion 310 and a trigger portion 320 passing through the first opening 130. The first latching protrusion 310 is slidably connected to the slide groove 120 and can be engaged in either the first slot 121 or the second slot 122.

[0067] When the operator pushes the sliding cover 300 to slide so that the first latching protrusion 310 engages with the first latching groove 121, the sliding cover 300 covers the handle operation hole 110, and the trigger part 320 cooperates with the micro switch 200 to switch the dual power transfer switch to the automatic operation state. In the automatic operation state, the handle operation hole 110 does not need to be used. Therefore, the sliding cover 300 can cover the handle operation hole 110, reducing the risk of dust entering the dual power transfer switch through the handle operation hole 110, which helps to extend the service life of the dual power transfer switch.

[0068] When the operator pushes the sliding cover 300 to slide so that the first latch 310 engages with the second latch 122, the handle operation hole 110 is exposed, and the trigger part 320 cooperates with the micro switch 200 to switch the dual power supply conversion switch to manual operation mode. In manual operation mode, the operator holds the handle 400 and works through the handle operation hole 110. Therefore, the handle operation hole 110 needs to be exposed.

[0069] This dual-power transfer switch allows for convenient switching between operating states via the sliding of the sliding cover 300. The engagement of the first slot 121 or the second slot 122 with the first protrusion 310 ensures the switch can reliably maintain either automatic or manual operation, improving its reliability and simplifying its structure for easier manufacturing and assembly. The engagement of the sliding groove 120 with the first protrusion 310 guides the sliding of the cover 300, allowing for more precise engagement with the first slot 121 or the second slot 122, further enhancing the reliability of switching between automatic and manual operation.

[0070] Optionally, in one possible embodiment, when the trigger unit 320 triggers the micro switch 200, the dual power supply transfer switch switches to automatic operation mode; when the trigger unit 320 moves away from the micro switch 200, the dual power supply transfer switch switches to manual operation mode. In another possible embodiment, when the trigger unit 320 moves away from the micro switch 200, the dual power supply transfer switch switches to automatic operation mode; when the trigger unit 320 triggers the micro switch 200, the dual power supply transfer switch switches to manual operation mode.

[0071] Further, see also Figures 3-6 In one possible embodiment, the cover 100 is further provided with a second opening 140, which is disposed opposite to the first opening 130 along a sliding direction perpendicular to the sliding cover 300. The two ends of the sliding cover 300 are respectively provided with a first elastic buckle 330 and a second elastic buckle 340. The first elastic buckle 330 is connected to the trigger part 320, and elastically presses against the inner wall of the cover 100 through the first opening 130, and can slide relative to the cover 100. The second elastic buckle 340 elastically presses against the inner wall of the cover 100 through the second opening 140, and can slide relative to the cover 100.

[0072] The sliding connection between the sliding cover 300 and the cover 100 is achieved by the cooperation of the first elastic buckle 330 and the second elastic buckle 340 with the inner wall of the cover 100. The structure is simple and the connection between the sliding cover 300 and the cover 100 has good reliability.

[0073] It is understandable that both the first opening 130 and the second opening 140 extend along the sliding direction of the slide cover 300. Therefore, by reasonably designing the lengths of the first opening 130 and the second opening 140 along the sliding direction of the slide cover 300, the sliding stroke of the slide cover 300 can be limited to assist the first latching protrusion 310 in engaging with the first latching groove 121 or the second latching groove 122, thus preventing the slide cover 300 from sliding beyond its travel due to excessive force applied by the operator, and improving the accuracy of the dual power supply changeover switch's state switching.

[0074] Optionally, the first elastic buckle 330 and the trigger part 320 form an integral structure. This arrangement can improve the reliability of the connection between the first elastic buckle 330 and the trigger part 320, and also facilitate processing and assembly.

[0075] Further, see also Figure 4 and Figure 6 One of the cover 100 and the sliding cover 300 is provided with a sliding guide portion 350 extending along the sliding direction of the sliding cover 300, and the other is provided with a protrusion 150, which is slidably connected to the sliding guide portion 350. Through the cooperation between the protrusion 150 and the sliding guide portion 350, the sliding of the sliding cover 300 can be guided, further improving the reliability of the operation of the sliding cover 300.

[0076] Optionally, in one possible embodiment, the sliding guide portion 350 is an elongated groove disposed on the sliding cover 300, and the protrusion 150 is elongated and disposed on the cover 100. In other possible embodiments, the sliding guide portion 350 may also be an elongated hole disposed on the cover 100, and the protrusion 150 is cylindrical and disposed on the sliding cover 300.

[0077] Optionally, see [link to relevant documentation] Figure 4 and Figure 6 Two pairs of sliding guides 350 and protrusions 150 can be provided. The two pairs of sliding guides 350 and protrusions 150 can be arranged on both sides of the slide groove 120 along the sliding direction perpendicular to the sliding cover 300. This arrangement is beneficial to improving the uniformity of force on the sliding cover 300, thereby improving the stability of the sliding cover 300.

[0078] Optionally, see [link to relevant documentation] Figure 4 and Figure 6 In one possible embodiment, the first latching protrusion 310 is hemispherical, and the shapes of the first latching groove 121 and the second latching groove 122 are adapted to the shape of the first latching protrusion 310. With this configuration, the contact between the first latching protrusion 310 and the first latching groove 121 before they are engaged is point contact, which reduces the sliding resistance of the sliding cover 300 and helps protect both the first latching protrusion 310 and the first latching groove 121. Similarly, the contact between the first latching protrusion 310 and the second latching groove 122 before they are engaged is also point contact.

[0079] Optionally, see [link to relevant documentation] Figure 2 , Figures 4-6The cover 100 has a groove 160, and the sliding cover 300 slides in the groove 160. A third slot 161 is provided on the groove wall near the handle operation hole 110 of the groove 160. A second protrusion 360 corresponding to the third slot 161 is provided on the side of the sliding cover 300. When the first protrusion 310 engages with the first slot 121, the second protrusion 360 engages with the third slot 161. By setting the engagement between the second protrusion 360 and the third slot 161, the reliability of the dual power supply changeover switch in automatic operation mode can be improved, and the protective effect of the sliding cover 300 on the handle operation hole 110 can also be enhanced.

[0080] Furthermore, such as Figure 7 As shown, the dual power supply changeover switch also includes a handle 400, which includes a grip portion 410 and an operating shaft 420. One end of the operating shaft 420 is connected to the grip portion 410, and the operating shaft 420 is used to pass through the handle operating hole 110 to cooperate with the operating mechanism.

[0081] Alternatively, in one possible embodiment, the operating shaft 420 is made of metal. An operating shaft 420 made of metal has higher strength compared to drive shafts made of plastic in the prior art, which helps to extend the service life of the handle 400.

[0082] Optionally, such as Figures 7-9 As shown, in another possible embodiment, the housing 100 is provided with a mounting hole 170, and the inner wall of the housing 100 is provided with a sleeve 180 communicating with the mounting hole 170. Part of the grip 410 and the operating shaft 420 are inserted into the sleeve 180 through the mounting hole 170. The operating shaft 420 and part of the grip 410 are fixed by the sleeve 180, which has a simple structure and is convenient for the handle 400 to be picked up. In addition, the sleeve 180 can protect the operating shaft 420 and prevent the operating shaft 420 from contacting other components inside the housing 100.

[0083] Further, see also Figures 7-9 The sleeve 180 has a notch 181 at one end near the mounting hole 170, and an elastic arm 182 is provided at the notch 181. The grip part 410 has a third locking protrusion 411, which engages with the elastic arm 182. The cooperation between the third locking protrusion 411 and the elastic arm 182 further improves the fixing effect of the handle 400 and reduces the risk of the handle 400 being lost during transportation of the dual power supply changeover switch.

[0084] Optionally, see [link to relevant documentation] Figure 8 The grip portion 410 is provided with two third locking protrusions 411, which are symmetrically arranged along the axis of the grip portion 410. By providing two third locking protrusions 411, the handle 400 can be installed on the cover 100 in either the forward or reverse direction, further reducing the difficulty of taking the handle 400 out of the grip.

[0085] Example 2

[0086] This embodiment provides a dual-power transfer switch, which has a largely the same structure as Embodiment 1, with improvements only. Therefore, only the differences between the two are described here; structures identical to those in Embodiment 1 will not be repeated. In this embodiment, technical features identical or corresponding to those in Embodiment 1 are referred to by the same reference numerals.

[0087] Specifically, such as Figures 10-12 As shown, in this embodiment, the dual power supply transfer switch also includes a contact support 500 and a moving contact 600.

[0088] The contact support 500 has multiple contact mounting spaces 511, each housing a moving contact 600. The moving contact 600 includes a moving blade 610 and a spring piece 620. Two moving blades 610 are provided, spaced apart. Each moving blade 610 has two recesses 611 on its surface facing away from the other blade, located at opposite ends. Each moving blade 610 corresponds to a spring piece 620, with its middle portion abutting against the inner wall of the contact mounting space 511, and its two ends elastically pressing against the two recesses 611. This arrangement allows the two spring pieces 620 to clamp the two moving blades 610, improving the reliability of the electrical connection between the moving blades 610 and the stationary contact. Furthermore, the spring 620 is fixed by the cooperation between the recess 611 and the spring 620, which is simple in structure and easy to assemble.

[0089] Optionally, see [link to relevant documentation] Figure 10 In one possible embodiment, each contact mounting space 511 is provided with at least two connecting shafts 630. Each connecting shaft 630 passes through two spring pieces 620 and two moving contact blades 610 simultaneously, and both ends of the connecting shaft 630 are respectively connected to the two opposite inner walls of the contact mounting space 511. Fixing the moving contact 600 using the connecting shafts 630 results in a simple structure and facilitates assembly. Furthermore, compared to using a single connecting shaft 630, providing at least two connecting shafts 630 prevents the moving contact 600 from rotating around the connecting shaft 630, thus improving the reliability of the moving contact 600's installation.

[0090] Optionally, see [link to relevant documentation] Figure 10 and Figure 11 In one possible embodiment, each moving contact 610 has a first protrusion 612 on its plate surface near the other moving contact 610, and the first protrusions 612 on the two moving contact 610 abut against each other. The cooperation of the two first protrusions 612 can ensure the distance between the two moving contact 610, which facilitates the insertion of the stationary contact between the two moving contact 610.

[0091] Furthermore, multiple first protrusions 612 can be provided on each moving contact blade 610. In this embodiment, two first protrusions 612 are provided. In other possible embodiments, the number of first protrusions 612 can also be one, three, etc., depending on actual needs, and this application does not make specific limitations.

[0092] Optionally, see [link to relevant documentation] Figure 10 and Figure 11 On the plate surface of each moving contact 610 near the other moving contact 610, a second protrusion 613 is provided at both ends of the moving contact 610, with the second protrusions 613 on the two moving contact 610 being spaced apart. By setting the two second protrusions 613 to fit together with a gap, the two moving contact 610 have a certain "overtravel space" under the action of the two spring pieces 620. This setting can improve the clamping effect of the two moving contact 610 on the stationary contact, thereby improving the reliability of the electrical connection between the moving contact 610 and the stationary contact.

[0093] Optionally, see [link to relevant documentation] Figure 10 The contact support 500 includes multiple coaxially spaced mounting portions 510, each mounting portion 510 having a contact mounting space 511. Through holes 513 are provided on the opposite side walls 512 of each mounting portion 510 near the contact mounting space 511. A connecting shaft 630 passes through the moving contact 600, with its two ends extending from the moving contact 600 connected to two through holes 513 respectively. A limiting flange 514 is provided at the outer edge of the through hole 513 on the side wall 512 facing away from the contact mounting space 511. The limiting flange 514 has a clearance fit with a base for mounting the contact support 500. By rationally designing the thickness of the limiting flange 514 along the axial direction of the connecting shaft 630, the movement distance of the connecting shaft 630 along its own axial direction can be limited, preventing the connecting shaft 630 from disengaging from the through hole 513 and reducing the risk of the moving contact 600 becoming loose during movement. Furthermore, by providing the limiting flange 514, the protective cover in the prior art can be eliminated, reducing the number of parts used and facilitating assembly. In addition, the provision of the limiting flange 514 also helps to improve the structural strength of the mounting part 510.

[0094] Optionally, multiple connecting shafts 630 can be provided to improve the reliability of the moving contact 600 installation. For example, two or three. It is worth noting that each connecting shaft 630 has a limiting flange 514 provided at both ends on the side wall 512.

[0095] Furthermore, such as Figure 10 , Figure 13 and Figure 14As shown, one end of the contact support 500 is provided with a connecting part 530, which is connected to the output disk 720. The output disk 720 is used to drive the contact support 500 to rotate through the connecting part 530 under external force. It can be understood that the output disk 720 is generally a disk that outputs rotational motion from the operating mechanism 700. The operation of the operating mechanism 700 will drive the output disk 720 to rotate, and the rotation of the output disk 720 will drive the contact support 500 to rotate through the connecting part 530.

[0096] Optionally, see [link to relevant documentation] Figure 13 and Figure 14 In one possible embodiment, the connecting portion 530 is provided with a plurality of protrusions 531, and the output disk 720 is provided with a corresponding insertion hole 721 for each protrusion 531. The protrusions 531 are inserted into their corresponding insertion holes 721. The connection between the connecting portion 530 and the output disk 720 is achieved through the cooperation of the protrusions 531 and the insertion holes 721. The structure is simple and easy to assemble. Furthermore, by providing multiple protrusions 531 and multiple insertion holes 721, the rotation of the output disk 720 relative to the connecting portion 530 can be effectively prevented, thereby improving the accuracy of the output disk 720 driving contact to support 500° rotation.

[0097] Furthermore, the contact support 500 is made of plastic, while the output disk 720 is generally made of metal. Therefore, the protrusion 531 and the insertion hole 721 are generally assembled by in-mold injection molding. Specifically, before mold closing and injection molding, the output disk 720 is precisely placed in the mold cavity by a robot or a built-in mold mechanism. After mold closing, the molten plastic is injected into the mold, enveloping the output disk 720. After cooling and mold opening, the output disk 720 and the connecting part 530 are connected.

[0098] Optionally, see [link to relevant documentation] Figure 13 and Figure 14 In another possible embodiment, the connecting part 530 and the output disk 720 are riveted together by rivets 532. The connection between the connecting part 530 and the output disk 720 is achieved by riveting, resulting in a simple structure, high connection strength, and ease of assembly.

[0099] In this embodiment, the connecting portion 530 is provided with a plurality of protrusions 531, and the output disk 720 is provided with an insertion hole 721 corresponding to each of the protrusions 531. The protrusions 531 are inserted into their corresponding insertion holes 721. Furthermore, the connecting portion 530 and the output disk 720 are riveted together by rivets 532.

[0100] Example 3

[0101] This embodiment provides a dual-power transfer switch, which is largely the same in structure as Embodiment 1 or Embodiment 2, with improvements only made based on Embodiment 1 or Embodiment 2. Therefore, only the differences are described here, and the structures identical to those in Embodiment 1 or Embodiment 2 will not be repeated. In this embodiment, the same or corresponding technical features as in Embodiment 1 or Embodiment 2 are referred to by the same reference numerals.

[0102] Specifically, such as Figure 15 and Figure 16 As shown, the dual power supply transfer switch also includes an operating mechanism 700, which includes a bracket 710.

[0103] Optionally, see [link to relevant documentation] Figure 15 In one possible embodiment, the bracket 710 includes a first mounting plate 711 and a second mounting plate 712 disposed opposite to each other. The first mounting plate 711 has a first connecting ear 7111 on its surface near the second mounting plate 712, and the end of the first connecting ear 7111 is detachably connected to the second mounting plate 712. The second mounting plate 712 has a second connecting ear 7121 on its surface near the first mounting plate 711, and the end of the second connecting ear 7121 is detachably connected to the first mounting plate 711.

[0104] By setting a first connecting ear 7111 and a second connecting ear 7121, the mutual connection between the first mounting plate 711 and the second mounting plate 712 is achieved. Compared with the prior art, which only sets connecting ears on the first mounting plate 711 or the second mounting plate 712, the connection strength between the first mounting plate 711 and the second mounting plate 712 is improved.

[0105] Optionally, see [link to relevant documentation] Figure 16 In another possible embodiment, the bottom of the bracket 710 is provided with a wiring hole 7131 for wiring.

[0106] Furthermore, the bracket 710 also includes a third mounting plate 713, which is mounted on the first mounting plate 711 and located near the contact support. The third mounting plate 713 is used to assemble some components that require wire connection. Therefore, the wiring hole 7131 can be set at the bottom of the third mounting plate 713.

[0107] Example 4

[0108] This embodiment provides a dual-power transfer switch, which has a largely the same structure as Embodiments 1, 2, or 3, with improvements only made based on Embodiments 1, 2, or 3. Therefore, only the differences are described here, and the structures identical to those in Embodiments 1, 2, or 3 will not be repeated. In this embodiment, the same or corresponding technical features as in Embodiments 1, 2, or 3 are referred to by the same reference numerals.

[0109] Specifically, such as Figure 17 and Figure 18 As shown, the dual power transfer switch also includes an operating mechanism 700. The operating mechanism 700 includes a bracket 710, an output disk 720, a positioning plate 730, and a limiting structure 740. The output disk 720 is rotatably connected to the bracket 710, and a positioning block 722 is provided on the output disk 720. Positioning plates 730 are rotatably connected to opposite sides of the center line of the output disk 720 on the bracket 710, with the positioning block 722 located between the lower ends of the two positioning plates 730. The limiting structure 740 includes a fixing plate 741 and a limiting assembly 742. The fixing plate 741 includes fixing portions 7411 disposed on the outer sides of two positioning plates 730. Each fixing portion 7411 is provided with a limiting assembly 742. The limiting assembly 742 includes a push rod 7421 and an elastic element 7422. The push rod 7421 is slidably connected to the fixing portion 7411 and is opposite to the upper end of the positioning plate 730. The elastic element 7422 is configured to have a tendency to drive the push rod 7421 to push the positioning plate 730 to rotate, so that the two positioning plates 730 move closer to each other. Compared with the prior art solution of driving the two positioning plates 730 by torsion springs, this limiting structure 740 has the following advantages: firstly, it has a high degree of integration, allowing for pre-assembly before assembly, which helps to reduce assembly difficulty; secondly, it has higher working stability in driving the positioning plates 730 to rotate.

[0110] To facilitate understanding, the working process of the operating mechanism 700 is briefly described below:

[0111] like Figure 18 As shown, when the input disk (not shown) built into the operating mechanism 700 rotates counterclockwise toward the power supply I side, it drives the positioning plate 730 to rotate counterclockwise until the positioning plate 730 separates from the output disk 720. During this process, the positioning plate 730 pushes the top rod 7421 of the left limit assembly 742 to compress the elastic element 7422. After the positioning plate 730 separates from the output disk 720, the operating mechanism releases stored energy, causing the output disk 720 to rotate to the closed position.

[0112] When the input disk rotates clockwise from the power supply I side toward the double split position, the elastic element 7422 of the left limit component 742 releases elastic potential energy to drive the push rod 7421 to push the positioning plate 730 to rotate slowly clockwise. When the output disk 720 rotates to the double split position, the positioning plate 730 returns to the initial position, thus limiting the output disk 720.

[0113] Optionally, see [link to relevant documentation] Figure 18 In one possible embodiment, the fixing part 7411 is provided with a first limiting arm 7412, and a sliding guide hole is formed between the first limiting arm 7412 and the fixing part 7411. A push rod 7421 is slidably connected within the sliding guide hole, and a limiting ear 74211 is provided on the push rod 74211. A fourth slot is formed between the limiting ear 74211 and the push rod 7421, and the fourth slot can engage with the first limiting arm 7412. The sliding connection between the push rod 7421 and the fixing part 7411 is achieved through the first limiting arm 7412, resulting in a simple structure and ease of manufacturing. The cooperation between the fourth slot and the first limiting arm 7412 limits the travel of the push rod 7421, preventing it from affecting the rotation of the positioning plate 730.

[0114] Optionally, see [link to relevant documentation] Figure 18 In other possible embodiments, the fixing part 7411 is provided with a first connecting post 7413. The end of the push rod 7421 furthest from the positioning plate 730 is provided with a second connecting post 74212. One end of the elastic member 7422 is sleeved on the first connecting post 7413, and the other end is sleeved on the second connecting post 74212. The elastic member 7422 is installed via the first connecting post 7413 and the second connecting post 74212, resulting in a simple structure and facilitating the assembly of the elastic member 7422.

[0115] Furthermore, the fixing part 7411 is also provided with a second limiting arm 7414, which forms a limiting space with the fixing part 7411, and the elastic member 7422 is located within the limiting space. By providing the second limiting arm 7414 to assist in fixing the elastic member 7422, it is beneficial to improve the assembly and operational reliability of the elastic member 7422.

[0116] It is understandable that the elastic element 7422 is optional but not limited to a spring.

[0117] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A dual power supply transfer switch, characterized in that, include: The cover (100) is provided with a handle operation hole (110), a slide groove (120) and a first opening (130). The slide groove (120) has a first slot (121) and a second slot (122) communicating with itself at both ends. The first slot (121) is closer to the handle operation hole (110) than the second slot (122). A micro switch (200) is disposed inside the housing (100) and opposite to the first opening (130); A sliding cover (300) is slidably mounted on the cover (100). The sliding cover (300) is provided with a first latching protrusion (310) and a trigger part (320) passing through the first opening (130). The first latching protrusion (310) is slidably connected to the sliding groove (120) and can be latched in the first slot (121) or the second slot (122). When the first protrusion (310) is engaged with the first slot (121), the sliding cover (300) covers the handle operation hole (110), and the trigger part (320) cooperates with the micro switch (200) to switch the dual power supply switch to the automatic operation state; when the first protrusion (310) is engaged with the second slot (122), the handle operation hole (110) is exposed, and the trigger part (320) cooperates with the micro switch (200) to switch the dual power supply switch to the manual operation state.

2. The dual power supply transfer switch according to claim 1, characterized in that, The cover (100) is also provided with a second opening (140), which is opposite to the first opening (130) along the sliding direction perpendicular to the sliding cover (300). The two ends of the sliding cover (300) are respectively provided with a first elastic buckle (330) and a second elastic buckle (340). The first elastic buckle (330) is connected to the trigger part (320). The first elastic buckle (330) elastically presses against the inner wall of the cover (100) through the first opening (130) and can slide relative to the cover (100). The second elastic buckle (340) elastically presses against the inner wall of the cover (100) through the second opening (140) and can slide relative to the cover (100).

3. The dual power supply transfer switch according to claim 1, characterized in that, One of the cover (100) and the sliding cover (300) is provided with a sliding guide portion (350) extending along the sliding direction of the sliding cover (300), and the other is provided with a protrusion (150), the protrusion (150) being slidably connected to the sliding guide portion (350).

4. The dual power supply transfer switch according to claim 1, characterized in that, The first card protrusion (310) is hemispherical, and the shapes of the first card groove (121) and the second card groove (122) are adapted to the shape of the first card protrusion (310); And / or, the cover (100) is provided with a groove (160), the sliding cover (300) is slidably engaged with the groove (160), the groove (160) is provided with a third slot (161) on the groove wall near the handle operation hole (110), the side of the sliding cover (300) is provided with a second protrusion (360) corresponding to the third slot (161), when the first protrusion (310) is engaged with the first slot (121), the second protrusion (360) is engaged with the third slot (161).

5. The dual power supply transfer switch according to claim 1, characterized in that, The dual power supply changeover switch also includes a handle (400), the handle (400) including a grip (410) and an operating shaft (420), one end of the operating shaft (420) being connected to the grip (410); The operating shaft (420) is made of metal; and / or, the cover (100) is provided with a mounting hole (170), and the inner wall of the cover (100) is provided with a sleeve (180) communicating with the mounting hole (170). Part of the grip (410) and the operating shaft (420) are inserted into the sleeve (180) through the mounting hole (170). The sleeve (180) is provided with a notch (181) at one end near the mounting hole (170), and an elastic arm (182) is provided at the notch (181). The grip (410) is provided with a third locking protrusion (411), and the third locking protrusion (411) engages with the elastic arm (182).

6. The dual power supply transfer switch according to any one of claims 1-5, characterized in that, The dual power supply transfer switch also includes a contact support (500), which includes a plurality of coaxial and spaced mounting portions (510), each mounting portion (510) having a contact mounting space (511), and each contact mounting space (511) having a moving contact (600) installed therein; The mounting part (510) has through holes (513) on both sides of the opposite side walls (512) near the contact mounting space (511); the connecting shaft (630) passes through the moving contact (600), and the two ends of the connecting shaft (630) extending out of the moving contact (600) are respectively connected to the two through holes (513). On the plate surface of the side wall (512) away from the contact mounting space (511), a limiting flange (514) is provided at the outer edge of the through hole (513). The limiting flange (514) is clearance-fitted with the base, and the base is used to install the contact support (500).

7. The dual power supply transfer switch according to claim 6, characterized in that, One end of the contact support (500) is provided with a connecting part (530), the connecting part (530) is connected to the output disk (720), and the output disk (720) is used to drive the contact support (500) to rotate through the connecting part (530) under the drive of external force. The connecting part (530) is provided with a plurality of protrusions (531), and the output disk (720) is provided with an embedding hole (721) corresponding to each of the protrusions (531). The protrusions (531) are embedded in the corresponding embedding holes (721); and / or, the connecting part (530) and the output disk (720) are riveted together by rivets (532).

8. The dual power supply transfer switch according to any one of claims 1-5, characterized in that, The dual power supply transfer switch also includes an operating mechanism (700), which includes a bracket (710) and a wiring hole (7131) at the bottom of the bracket (710). And / or, the bracket (710) includes a first mounting plate (711) and a second mounting plate (712) disposed opposite to each other. The first mounting plate (711) has a first connecting ear (7111) on its surface near the second mounting plate (712). The end of the first connecting ear (7111) is detachably connected to the second mounting plate (712). The second mounting plate (712) has a second connecting ear (7121) on its surface near the first mounting plate (711). The end of the second connecting ear (7121) is detachably connected to the first mounting plate (711).

9. The dual power supply transfer switch according to any one of claims 1-5, characterized in that, The dual power supply transfer switch also includes an operating mechanism (700), which includes a bracket (710), an output disk (720), a positioning plate (730), and a limiting structure (740). The output disk (720) is rotatably connected to the bracket (710). The output disk (720) is provided with a positioning block (722). On the bracket (710), the positioning plate (730) is rotatably connected to both sides of the center line of the output disk (720). The positioning block (722) is located between the lower ends of the two positioning plates (730). The limiting structure (740) includes a fixing plate (741) and a limiting component (742). The fixing plate (741) includes fixing parts (7411) disposed on the outer sides of the two positioning plates (730). Each fixing part (7411) is provided with a limiting component (742). The limiting component (742) includes a push rod (7421) and an elastic member (7422). The push rod (7421) is slidably connected to the fixing part (7411) and is opposite to the upper end of the positioning plate (730). The elastic member (7422) is configured to have a tendency to drive the push rod (7421) to push the positioning plate (730) to rotate, so that the two positioning plates (730) move closer to each other.

10. The dual power supply transfer switch according to claim 9, characterized in that, The fixing part (7411) is provided with a first limiting arm (7412), and a sliding guide hole is formed between the first limiting arm (7412) and the fixing part (7411). The top rod (7421) is slidably connected in the sliding guide hole. The top rod (7421) is provided with a limiting ear (74211), and a fourth slot is formed between the limiting ear (74211) and the top rod (7421). The fourth slot can be engaged with the first limiting arm (7412). And / or, the fixing part (7411) is provided with a first connecting post (7413) and a second limiting arm (7414), the top rod (7421) is provided with a second connecting post (74212) at one end away from the positioning plate (730), one end of the elastic member (7422) is sleeved on the first connecting post (7413), and the other end is sleeved on the second connecting post (74212), a limiting space is formed between the second limiting arm (7414) and the fixing part (7411), and the elastic member (7422) is located within the limiting space.

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