Dual-power automatic change-over switch

Abstract

The utility model relates to a dual-power-supply automatic change-over switch, which comprises a mounting seat, a common rotating shaft and a standby rotating shaft, and is characterized in that the mounting seat is provided with a change-over limiting plate and a change-over mechanism; the conversion mechanism comprises a conversion driving shaft which penetrates through the conversion limiting plate in a sliding manner, a common conversion plate of which one end is hinged to the conversion limiting plate, a standby conversion plate of which one end is hinged to the conversion limiting plate, a common gear which coaxially sleeves the common rotating shaft, and a standby gear which coaxially sleeves the standby rotating shaft; the common conversion plate is provided with common conversion teeth meshed with the common gear, the standby conversion plate is provided with standby conversion teeth meshed with the standby gear, the conversion limiting plate is provided with a common conversion groove and a standby conversion groove for the conversion driving shaft to slide, and the common conversion plate is provided with a common force point groove for the conversion driving shaft to slide and penetrate through. The standby conversion plate is provided with a standby force point groove for the conversion driving shaft to penetrate through in a sliding mode, and the installation base is provided with an operation mechanism for driving the conversion driving shaft to slide in the common conversion groove / the standby conversion groove.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a dual-power automatic transfer switch. Background Art

[0002] An automatic transfer switch is a commonly used low-voltage electrical appliance, often used for switching between two power sources to ensure that when one power source fails or stops supplying power, the other power source can be quickly switched to ensure normal power supply to the load circuit.

[0003] Most of the operating mechanisms in the existing dual power automatic transfer switches use a connecting rod assembly to drive the contacts of the contact system to perform closing / opening actions. Although this operating mechanism is simple, it is limited by the size and swing angle of the connecting rod in the connecting rod assembly, resulting in a small contact opening distance and slow contact opening and closing speed of this automatic transfer switch, resulting in low arc extinguishing ability and low breaking capacity of the product as a whole, and therefore needs further improvement. Utility Model Content

[0004] In order to increase the contact opening and closing speed of a dual power transfer switch, the present application provides a dual power automatic transfer switch.

[0005] The present application provides a dual power automatic transfer switch adopting the following technical solution:

[0006] A dual power automatic transfer switch, comprising a mounting seat, a common rotating shaft rotatably connected to the mounting seat, and a spare rotating shaft rotatably connected to the mounting seat, the common rotating shaft is used to control the closing or opening of the common moving contact, the spare rotating shaft is used to control the opening or opening of the spare moving contact, the mounting seat is provided with a conversion limit plate and a conversion mechanism for driving the common rotating shaft / spare rotating shaft to rotate to achieve the closing or opening of the common moving contact / spare moving contact, the conversion mechanism comprises a conversion drive shaft slidably penetrated through the conversion limit plate, a common conversion plate hinged at one end to the conversion limit plate, a spare conversion plate hinged at one end to the conversion limit plate, a common gear coaxially sleeved on the common rotating shaft, and a coaxially sleeved A spare gear for a spare rotating shaft, a common conversion tooth meshing with the common gear is arranged at the hinged end of the common conversion plate, a spare conversion tooth meshing with the spare gear is arranged at the hinged end of the spare conversion plate, the conversion limit plate is provided with a common conversion groove and a spare conversion groove for sliding of the conversion drive shaft, the lower end of the common conversion groove and the lower end of the spare conversion groove are both inclined and connected in a direction approaching each other, the free end of the common conversion plate is provided with a common force point groove for sliding through the conversion drive shaft, the free end of the spare conversion plate is provided with a spare force point groove for sliding through the conversion drive shaft, and the mounting seat is provided with an operating mechanism for driving the conversion drive shaft to slide in the common conversion groove / spare conversion groove.

[0007] By adopting the above technical scheme, under normal conditions, the common moving contact on the common rotating shaft is in a closed state, and the spare moving contact on the spare rotating shaft is in an open state. At this time, the common conversion slot and the spare force point slot on the spare conversion plate are in an overlapped state, the conversion drive shaft is at the end of the common force point slot away from the hinged end of the common conversion plate, and the conversion drive shaft is at the upper end of the common conversion slot; when the common power supply fails, the operating mechanism drives the conversion drive shaft to slide from the upper end of the common conversion slot to the lower end of the common conversion slot, and the conversion drive shaft forces the free end of the common conversion plate to swing downward around the axis of the hinge point, thereby driving the common conversion teeth to rotate, and then realizing the rotation of the common rotating shaft through the common gear, so that the common moving contact on the common rotating shaft is in an open state. The force point slot and the spare conversion slot on the commonly used conversion plate are in an overlapping state. During this process, the spare rotating shaft remains stationary and is still in an open state. The operating mechanism continues to drive the conversion drive shaft to slide from the lower end of the spare conversion slot to the upper end of the spare conversion slot. The conversion drive shaft forces the free end of the spare conversion plate to swing upward around the axis of the hinge point, thereby driving the spare conversion tooth to rotate, and then realizing the rotation of the spare rotating shaft through the spare gear, so that the spare moving contact on the spare rotating shaft is in a closed state for power supply operation. The gear meshing method is adopted, and only the rotation method of a single commonly used conversion plate / spare conversion plate is used to realize the opening and closing actions of the commonly used moving contact / spare moving contact. The response speed is fast and the space occupied is small, thereby improving the contact opening and closing speed of the dual power conversion switch.

[0008] Preferably, the common rotating shaft includes a common main shaft and a common secondary shaft coaxially fixedly connected to one end of the common main shaft, the cross-section of the common secondary shaft is circular, the common secondary shaft rotates and passes through the conversion limit plate, the cross-section of the common main shaft is square, and the common gear is coaxially provided with a common square groove sleeved on the common main shaft.

[0009] By adopting the above technical scheme, the common secondary shaft is rotatably passed through the conversion limit plate to realize the rotational connection between the common rotating shaft and the conversion limit plate, and the common gear is coaxially provided with a common square groove which is sleeved on the common main shaft to realize the circumferential linkage setting of the common gear and the common main shaft.

[0010] Preferably, the spare rotating shaft includes a spare main shaft and a spare secondary shaft coaxially fixedly connected to one end of the spare main shaft, the cross-section of the spare secondary shaft is circular, the spare secondary shaft rotates and passes through the conversion limit plate, the cross-section of the spare main shaft is square, and the spare gear is coaxially provided with a spare square groove sleeved on the spare main shaft.

[0011] By adopting the above technical solution, the spare secondary shaft is rotatably passed through the conversion limit plate to realize the rotational connection between the spare rotating shaft and the conversion limit plate, and the spare gear is coaxially provided with a spare square groove which is sleeved on the spare main shaft to realize the circumferential linkage setting of the spare gear and the spare main shaft.

[0012] Preferably, one end of the common conversion plate is fixedly connected with a common pin, and the common pin is rotatably connected to the conversion limit plate.

[0013] Preferably, the conversion limit plate is fixedly connected with a common pin shaft, one end of the common conversion plate is fixedly penetrated with a common sleeve, and the common pin shaft is rotatably penetrated through the common sleeve.

[0014] By adopting the above technical solution and setting a common pin shaft, the rotation connection between the common conversion plate and the conversion limit plate is achieved.

[0015] Preferably, one end of the spare conversion plate is fixedly connected with a spare pin shaft, and the spare pin shaft is rotatably connected to the conversion limit plate.

[0016] Preferably, the conversion limit plate is fixedly connected with a spare pin shaft, and a spare sleeve is fixedly penetrated through one end of the spare conversion plate, and the spare pin shaft is rotatably penetrated through the spare sleeve.

[0017] By adopting the above technical solution and setting a spare pin shaft, the rotational connection between the spare conversion plate and the conversion limit plate is achieved.

[0018] Preferably, the common conversion tooth and the common conversion plate are integrally formed.

[0019] By adopting the above technical solution, the installation convenience of commonly used conversion plates is improved.

[0020] Preferably, the spare conversion tooth and the spare conversion plate are integrally formed.

[0021] By adopting the above technical solution, the installation convenience of the spare conversion board is improved.

[0022] Preferably, a mounting support plate is provided on the outer side of the conversion limit plate, which is located below the common rotating shaft / spare rotating shaft and above the common conversion slot / spare conversion slot. Support foot plates are fixedly connected to both ends of the mounting support plate, and the support foot plates are fixed to the conversion limit plate. A common pin shaft is provided between the conversion limit plate and the mounting support plate.

[0023] By adopting the above technical solution, an additional mounting support plate is provided, and a common pin shaft is arranged between the conversion limit plate and the mounting support plate, thereby improving the connection stability of the common pin shaft.

[0024] In summary, the utility model has the following beneficial effects:

[0025] The gear meshing method is adopted, and only the rotation method of a single common conversion plate / spare conversion plate is adopted to realize the opening and closing action of the common moving contact / spare moving contact, which has a fast response speed and occupies a small space, thereby improving the contact opening and closing speed of the dual power conversion switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a dual power automatic transfer switch;

[0027] Figure 2 It is a schematic diagram of the structure of the commonly used rotating shaft and the spare rotating shaft;

[0028] Figure 3 It is a structural schematic diagram of a conversion limit plate;

[0029] Figure 4 It is a structural schematic diagram of the conversion mechanism;

[0030] Figure 5 It is a connection diagram of the conversion limit plate and the conversion mechanism.

[0031] In the figure, 1. mounting seat; 2. common rotating shaft; 21. common main shaft; 22. common secondary shaft; 20. common moving contact; 3. spare rotating shaft; 31. spare main shaft; 32. spare secondary shaft; 30. spare moving contact; 4. conversion limit plate; 41. common conversion slot; 42. spare conversion slot; 43. mounting support plate; 431. support plate; 44. common pin shaft; 45. spare pin shaft; 5. conversion mechanism; 51. conversion drive shaft; 52. common conversion plate; 521. common force point slot; 522. common conversion tooth; 53. spare conversion plate; 531. spare force point slot; 532. spare conversion tooth; 54. common gear; 55. spare gear. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The present application discloses a dual power automatic transfer switch. Figure 1 , Figure 2 , including a mounting seat 1, a common rotating shaft 2 and a spare rotating shaft 3, wherein the common rotating shaft 2 is used to control the closing or opening of the common moving contact 20, and the spare rotating shaft 3 is used to control the opening or closing of the spare moving contact 30. The mounting seat 1 is fixedly connected with a conversion limit plate 4, which is a square plate.

[0034] The axes of the common rotating shaft 2 and the spare rotating shaft 3 are parallel. In this embodiment, the common rotating shaft 2 includes a common main shaft 21 and a common secondary shaft 22 coaxially fixedly connected to one end of the common main shaft 21. The cross section of the common secondary shaft 22 is circular, and the cross section of the common main shaft 21 is square. The common secondary shaft 22 is rotatably penetrated through the conversion limit plate 4. The spare rotating shaft 3 includes a spare main shaft 31 and a spare secondary shaft 32 coaxially fixedly connected to one end of the spare main shaft 31. The cross section of the spare secondary shaft 32 is circular, and the cross section of the spare main shaft 31 is square. The spare secondary shaft 32 is rotatably penetrated through the conversion limit plate 4. The connection method between the common main shaft 21 and the common moving contact 20 and the connection method between the spare main shaft 31 and the spare moving contact 30 have been disclosed in the Chinese patent with the authorization announcement number CN218333526U, and will not be repeated here.

[0035] Reference Figure 2 , Figure 3 The conversion limit plate 4 is penetrated by a common conversion groove 41 and a spare conversion groove 42 located between the common rotating shaft 2 and the spare rotating shaft 3. The lower ends of the common conversion groove 41 and the spare conversion groove 42 are inclined toward each other and connected to each other, so that the common conversion groove 41 and the spare conversion groove 42 form a Y-shaped groove, and the common rotating shaft 2 and the spare rotating shaft 3 are symmetrically arranged along the midpoint of the Y-shaped groove.

[0036] Reference Figure 2 , Figure 4 The mounting seat 1 is provided with a conversion mechanism 5 for driving the common rotating shaft 2 / the standby rotating shaft 3 to rotate so as to close or open the common moving contact 20 / the standby moving contact 30. The conversion mechanism 5 includes a conversion drive shaft 51, a common conversion plate 52, a standby conversion plate 53, a common gear 54 and a standby gear 55. The conversion drive shaft 51 is slidably arranged in the common conversion slot 41 and the standby conversion slot 42.

[0037] The outer side of the conversion limit plate 4 is provided with a mounting support plate 43 located below the common rotating shaft 2 / standby rotating shaft 3 and above the common conversion slot 41 / standby conversion slot 42. The two ends of the mounting support plate 43 are fixedly connected with support foot plates 431, which are screwed to the conversion limit plate 4, and a mounting cavity is provided between the mounting support plate 43 and the conversion limit plate 4. One end of the common conversion plate 52 has a circular portion, and the circular portion of the common conversion plate 52 is hinged to the conversion limit plate 4. In this embodiment, the circular portion of the common conversion plate 52 is coaxially fixedly penetrated with a common pin 44, and the common pin 44 is rotatably connected between the conversion limit plate 4 and the mounting support plate 43. In other embodiments, the common pin 44 can also be installed in a fixed manner between the conversion limit plate 4 and the mounting support plate 43. In this manner, the circular portion of the common conversion plate 52 is fixedly penetrated with a common sleeve, and the common pin 44 is rotatably penetrated in the common sleeve to realize the relative rotation of the common conversion plate 52 to the conversion limit plate 4.

[0038] A plurality of common conversion teeth 522 are convexly provided on the outer peripheral wall of the circular portion of the common conversion plate 52, and the common conversion teeth 522 and the common conversion plate 52 are integrally formed. The common gear 54 is coaxially provided with a common square groove coaxially fixedly sleeved on the common main shaft 21. In this embodiment, the common gear 54 and the common main shaft 21 are fixed by welding, and the common gear 54 is externally meshed with the common conversion teeth 522.

[0039] One end of the spare conversion plate 53 has a circular portion, and the circular portion of the spare conversion plate 53 is hinged to the conversion limit plate 4. In this embodiment, the circular portion of the spare conversion plate 53 is coaxially fixedly penetrated with a spare pin 45, and the spare pin 45 is rotatably connected between the conversion limit plate 4 and the mounting support plate 43. In other embodiments, the spare pin 45 can also be installed in a manner of being fixedly connected between the conversion limit plate 4 and the mounting support plate 43. In this manner, the circular portion of the spare conversion plate 53 is fixedly penetrated with a spare sleeve, and the spare pin 45 is rotatably penetrated in the spare sleeve to realize the relative rotation of the spare conversion plate 53 to the conversion limit plate 4.

[0040] A plurality of spare conversion teeth 532 are convexly provided on the outer peripheral wall of the circular portion of the spare conversion plate 53, and the spare conversion teeth 532 and the spare conversion plate 53 are integrally formed. The spare gear 55 is coaxially provided with a spare square groove coaxially fixedly sleeved on the spare main shaft 31. In this embodiment, the spare gear 55 and the spare main shaft 31 are fixed by welding, and the spare gear 55 is externally meshed with the spare conversion teeth 532. The common conversion plate 52 and the spare conversion plate 53 are staggered so that the free ends of the common conversion plate 52 and the spare conversion plate 53 can partially rotate and overlap.

[0041] Reference Figure 3 , Figure 5 The free end of the common conversion plate 52 is provided with a common force point groove 521 for the conversion drive shaft 51 to slide through, and the free end of the spare conversion plate 53 is provided with a spare force point groove 531 for the conversion drive shaft 51 to slide through. The mounting seat 1 is provided with an operating mechanism (not shown in the figure) for driving the conversion drive shaft 51 to switch and slide in the common conversion groove 41 / spare conversion groove 42. The operating mechanism has been disclosed in the Chinese patent authorization announcement number CN209343954U and is a well-known structure for those skilled in the art, and will not be described in detail here.

[0042] The implementation principle of a dual power automatic transfer switch in the embodiment of the present application is as follows: under normal conditions, the common moving contact 20 on the common rotating shaft 2 is in a closed state, and the spare moving contact 30 on the spare rotating shaft 3 is in an open state. At this time, the common conversion slot 41 and the spare force point slot 531 on the spare conversion plate 53 are in a coincident state, the conversion drive shaft 51 is at one end of the common force point slot 521 away from the hinged end of the common conversion plate 52, and the conversion drive shaft 51 is at the upper end of the common conversion slot 41;

[0043] When the common power supply fails, the operating mechanism drives the conversion drive shaft 51 to slide from the upper end of the common conversion slot 41 to the lower end of the common conversion slot 41, and the conversion drive shaft 51 forces the free end of the common conversion plate 52 to swing downward around the axis of the hinge point, thereby driving the common conversion tooth 522 to rotate, and then realizing the rotation of the common rotating shaft 2 through the common gear 54, so that the common moving contact 20 on the common rotating shaft 2 is in the open state, and the force point slot on the common conversion plate 52 and the spare conversion slot 42 are in the overlapped state. In this process, the spare rotating shaft 3 remains stationary and is still in the open state. The operating mechanism continues to drive the conversion drive shaft 51 to slide from the lower end of the standby conversion slot 42 to the upper end of the standby conversion slot 42, and drives the conversion shaft to abut against the end of the standby force point slot 531 away from the hinged end of the standby conversion plate 53. The conversion drive shaft 51 forces the free end of the standby conversion plate 53 to swing upward around the axis of the hinge point, thereby driving the standby conversion tooth 532 to rotate, and then realizing the rotation of the standby rotating shaft 3 through the standby gear 55, so that the standby moving contact 30 on the standby rotating shaft 3 is in the closed state for power supply operation. During this process, the common rotating shaft 2 remains stationary and is still in the open state.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dual power automatic transfer switch, characterized in that: The invention comprises a mounting seat (1), a common rotating shaft (2) rotatably connected to the mounting seat (1), and a spare rotating shaft (3) rotatably connected to the mounting seat (1), wherein the common rotating shaft (2) is used to control the closing or opening of a common moving contact (20), and the spare rotating shaft (3) is used to control the opening or closing of a spare moving contact (30), and the mounting seat (1) is provided with a conversion limit plate (4) and a switch for driving the common rotating shaft (2) / the spare rotating shaft (3) to rotate so as to realize the closing or opening of the common moving contact A switching mechanism (5) for closing or opening a switch head (20) / spare moving contact (30), the switching mechanism (5) comprising a switching drive shaft (51) slidingly arranged on a switching limit plate (4), a common switching plate (52) hinged at one end to the switching limit plate (4), a spare switching plate (53) hinged at one end to the switching limit plate (4), a common gear (54) coaxially sleeved on a common rotating shaft (2), and a spare gear coaxially sleeved on a spare rotating shaft (3). (55), the hinged end of the common conversion plate (52) is provided with a common conversion tooth (522) meshing with the common gear (54), the hinged end of the spare conversion plate (53) is provided with a spare conversion tooth (532) meshing with the spare gear (55), the conversion limit plate (4) is provided with a common conversion groove (41) and a spare conversion groove (42) for the conversion drive shaft (51) to slide, the lower end of the common conversion groove (41) and the lower end of the spare conversion groove (42) are both inclined and connected in a direction approaching each other, the free end of the common conversion plate (52) is provided with a common force point groove (521) for the conversion drive shaft (51) to slide through, the free end of the spare conversion plate (53) is provided with a spare force point groove (531) for the conversion drive shaft (51) to slide through, and the mounting seat (1) is provided with an operating mechanism for driving the conversion drive shaft (51) to slide in the common conversion groove (41) / the spare conversion groove (42).

2. A dual power automatic transfer switch according to claim 1, characterized in that: The common rotating shaft (2) comprises a common main shaft (21) and a common secondary shaft (22) coaxially fixedly connected to one end of the common main shaft (21); the common secondary shaft (22) has a circular cross section; the common secondary shaft (22) is rotatably arranged in the conversion limit plate (4); the common main shaft (21) has a square cross section; and the common gear (54) is coaxially provided with a common square groove sleeved on the common main shaft (21).

3. A dual power automatic transfer switch according to claim 1, characterized in that: The spare rotating shaft (3) comprises a spare main shaft (31) and a spare secondary shaft (32) coaxially fixedly connected to one end of the spare main shaft (31); the spare secondary shaft (32) has a circular cross section; the spare secondary shaft (32) is rotatably arranged in the conversion limit plate (4); the spare main shaft (31) has a square cross section; and the spare gear (55) is coaxially provided with a spare square groove sleeved on the spare main shaft (31).

4. A dual power automatic transfer switch according to claim 1, characterized in that: One end of the common conversion plate (52) is fixedly connected to a common pin shaft (44), and the common pin shaft (44) is rotatably connected to the conversion limit plate (4).

5. The dual power automatic transfer switch according to claim 1, characterized in that: The conversion limit plate (4) is fixedly connected to a common pin shaft (44), one end of the common conversion plate (52) is fixedly penetrated by a common sleeve, and the common pin shaft (44) is rotatably penetrated by the common sleeve.

6. A dual power automatic transfer switch according to claim 1, characterized in that: One end of the spare conversion plate (53) is fixedly connected to a spare pin shaft (45), and the spare pin shaft (45) is rotatably connected to the conversion limit plate (4).

7. The dual power automatic transfer switch according to claim 1, characterized in that: The conversion limit plate (4) is fixedly connected to a spare pin shaft (45); one end of the spare conversion plate (53) is fixedly penetrated by a spare sleeve; the spare pin shaft (45) is rotatably penetrated by the spare sleeve.

8. The dual power automatic transfer switch according to claim 1, characterized in that: The common conversion tooth (522) and the common conversion plate (52) are integrally formed.

9. The dual power automatic transfer switch according to claim 1, characterized in that: The spare conversion tooth (532) and the spare conversion plate (53) are integrally formed.

10. A dual power automatic transfer switch according to claim 4, characterized in that: The outer side of the conversion limit plate (4) is provided with a mounting support plate (43) located below the common rotating shaft (2) / the standby rotating shaft (3) and above the common conversion slot (41) / the standby conversion slot (42); both ends of the mounting support plate (43) are fixedly connected with support foot plates (431); the support foot plates (431) are fixed to the conversion limit plate (4); and the common pin shaft (44) is provided between the conversion limit plate (4) and the mounting support plate (43).

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