Dual-power change-over switch

Abstract

The utility model provides a dual power supply change-over switch, which comprises a shell and a functional assembly arranged in the shell, the functional assembly comprises a rotating assembly, a first static contact and a second static contact, the rotating assembly drives a moving contact to rotate so as to realize circuit switching, the first static contact and the second static contact are arranged at a certain interval, and the rotating assembly comprises a rotating part driven by a rotating shaft. The moving contact is connected with the rotating part; the contact part of one moving contact is provided with a first moving contact and a second moving contact which are respectively positioned on different sides, and the moving contact is provided with a main power supply connecting position which rotates along with the rotating part to enable the first moving contact to be in contact fit with the first static contact; the movable contact is provided with a standby power supply connecting position which rotates along with the rotating part to enable the second movable contact to be in contact fit with the second static contact; according to the device, the moving contact structure of the dual-power change-over switch is improved, so that the structure of the function assembly of the change-over switch is simpler, the production and the installation are convenient, the internal layout of the change-over switch is compact, and the overall structure is small and exquisite.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a dual power supply conversion switch. Background Art

[0002] The dual power conversion switch is used in the power supply system. When the main power supply fails, the faulty power supply is disconnected and the backup power supply is connected to supply power to the load, so that the electrical appliances at the load end can operate normally to ensure uninterrupted power supply.

[0003] The applicant has been researching and developing improvements on dual power conversion switches for a long time; in the existing dual power automatic conversion switches, the operating transmission mechanism for switching between the main power supply and the backup power supply includes two static contacts and two moving contacts. For example, the dual power conversion switch with the same side incoming line provided by the Chinese utility model patent (publication number CN212659458U) includes a shell, a switch assembly is arranged in the shell, the switch assembly includes two static contacts and two moving contacts, and the moving contact is provided with a moving contact for contacting with the static contact, and the two static contacts are respectively a left static contact and a right static contact. This design makes the power switching structure more complicated to a certain extent and occupies space by matching the two separated moving contacts with the two static contacts respectively. Therefore, the applicant improves the structure of the moving contact to make it simple, easy to produce and install, and further designs and adjusts the internal layout of the dual power conversion switch to make it compact and compact. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and provide a dual power conversion switch. The technical solution adopted by the utility model is as follows:

[0005] A dual power conversion switch comprises a shell and a functional component arranged in the shell, wherein the functional component comprises a rotating component that drives a moving contact to rotate to realize circuit switching, a first static contact and a second static contact arranged at a certain distance, the rotating component comprises a rotating part driven by a rotating shaft, and the moving contact is connected to the rotating part; the moving contact comprises a contact part and a moving contact mounting part, and the contact part of a moving contact is provided with a first moving contact and a second moving contact respectively located on different sides; the moving contact has a main power connection position that rotates with the rotating part to make the first moving contact contact and cooperate with the first static contact, and the moving contact has a standby power connection position that rotates with the rotating part to make the second moving contact contact and cooperate with the second static contact.

[0006] Preferably, an arc extinguishing plate is arranged between the first static contact and the second static contact, and the arc extinguishing plate includes an arc extinguishing base and an arc striking protrusion protruding relative to the arc extinguishing base; the angle between the arc striking protrusion and the arc extinguishing base is an acute angle, and an opening penetrating the arc extinguishing base is formed at the angle between the arc striking protrusion and the arc extinguishing base.

[0007] Preferably, the arc extinguishing piece is arc-shaped as a whole, the curvature of the arc matches the movement trajectory of the contact part of the moving contact, and the inclination directions of the arc-striking protrusions at both ends of the arc extinguishing base are relatively arranged; the relative arrangement means: roughly taking the middle of the arc extinguishing base as the axis of symmetry, the left arc-striking protrusion is inclined to the left, and the right arc-striking protrusion is inclined to the right, or, the left arc-striking protrusion is inclined to the right, and the right arc-striking protrusion is inclined to the left.

[0008] Preferably, the rotating portion comprises two rotating pieces, the moving contact mounting portion is clamped in a spindle-shaped mounting groove between the two rotating pieces, and the moving contact mounting portion has a spindle-shaped protrusion that matches the spindle-shaped mounting groove.

[0009] Preferably, the functional component also includes an elastic component, which includes a flexible guide, a spring sleeved outside the guide, a positioning groove arranged on the inner wall of the shell to limit the positioning end of the guide and cooperate with the rotation of the guide, the end of the guide away from the positioning end is a movable end, and the movable end of the guide is connected to the rotating part; the elastic component has a compression state in which the movable end of the rotating part is driven to approach the positioning end and squeeze the spring due to the rotation of the rotating part, and the elastic component has a rebound state in which the movable end of the rotating part is driven away from the positioning end due to the rotation of the rotating part and the spring rebounds; the elastic component switches between the rebound state and the compression state due to the rotation of the rotating part, and at the same time, its spring force further drives the rotating part to rotate to the main power connection position or the backup power connection position, and when the moving and static contacts are in contact, the spring is in the rebound state.

[0010] Preferably, a rotation groove is provided on the rotating part, and a rotation column extending into the rotation groove is provided on the guide member, and the guide member is rotationally connected to the rotating part through the cooperation of the rotation groove and the rotation column.

[0011] Preferably, the functional component also includes a coil frame, an iron core, and a transmission member, wherein a first electromagnetic coil and a second electromagnetic coil are respectively wound on the coil frames on both sides of the iron core, and the transmission member is transmission-connected to the rotating part and the iron core; the iron core has a displacement under the action of the first electromagnetic coil to drive the transmission member to displace in a first direction and cause the rotating part to rotate clockwise to a first position in which the first moving contact contacts and cooperates with the first static contact, and the iron core has a displacement under the action of the second electromagnetic coil to drive the transmission member to displace in a second direction and cause the rotating part to rotate counterclockwise to a second position in which the second moving contact contacts and cooperates with the second static contact.

[0012] Preferably, the transmission member is provided with a first transmission groove, the rotating part is provided with a transmission protrusion extending into the first transmission groove, and the transmission member is connected to the rotating part through the first transmission groove and the transmission protrusion; the transmission member is provided with a second transmission groove, and the iron core is inserted into the second transmission groove to enable the transmission member and the iron core to be linked.

[0013] The beneficial effects of the utility model are as follows: the device improves the moving contact structure of the dual power conversion switch so that the contact portion of the same moving contact has a first moving contact and a second moving contact located on different sides respectively, and the first moving contact and the second moving contact are respectively in contact with the first stationary contact and the second stationary contact arranged at a certain distance, so that the structure of the functional components of the conversion switch is more streamlined, easy to produce and install, and the internal layout of the conversion switch is compact and the overall structure is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0015] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0016] Figure 2 This is a schematic diagram of the explosion structure of Example 1;

[0017] Figure 3 This is a schematic diagram of the functional component structure of Example 1;

[0018] Figure 4 It is a schematic diagram of the coordination between the rotating assembly and the moving and static contacts and the arc-extinguishing piece in Example 1;

[0019] Figure 5 This is a schematic diagram of the assembly of the rotating part and the moving contact of Example 1;

[0020] Figure 6 In the figure, A is the side view of the arc extinguishing piece, and B is the oblique view of the arc extinguishing piece;

[0021] Figure 7 This is a schematic diagram of the structure of the rotating part and the elastic component of Example 1;

[0022] Figure 8 This is a schematic diagram of the assembly of the rotating part and the transmission member of Example 1;

[0023] In the figure, 1-housing, 101-handle, 102-external connecting part of rotating shaft, 11-front cover, 12-rear cover, 2-rotating assembly, 21-moving contact, 211-first moving contact, 212-second moving contact, 213-moving contact mounting part, 22-rotating part, 221-rotating shaft, 222-rotating groove, 223-connecting protrusion, 224-mounting groove, 225 transmission protrusion, 3-elastic assembly, 31-guide member, 311-rotating column, 32-spring, 33-positioning groove, 4-arc extinguishing sheet, 41-arc extinguishing base, 42-arc striking protrusion, 51-first static contact, 52-second static contact, 6-load output part, 7-coil frame, 71-iron core, 8-transmission member, 81-first transmission groove, 82-second transmission groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0026] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0027] Example 1

[0028] like Figure 1-5 As shown, a dual power conversion switch includes a shell 1 and a functional component arranged in the shell 1, the shell 1 includes a front cover 11 and a rear cover 12 respectively arranged on both sides of the functional component, the functional component includes a rotating component 2 that drives a moving contact 21 to rotate to achieve circuit switching, a first static contact 51 and a second static contact 52 arranged at a certain distance, the rotating component 2 includes a rotating part 22 driven by a rotating shaft 221, and the moving contact 21 is connected to the rotating part 22; a connecting protrusion 223 is provided on the rotating part 22, and the connecting protrusion 223 is sleeved and matched with a handle 101 extending outside the shell 1, so that the handle 101 can drive the rotating part 22 to rotate, and then drive the moving contact 21 to rotate to achieve circuit switching.

[0029] The rotating shaft 221 is extended to be provided with an external rotating shaft portion 102, and the external rotating shaft portion 102 is matched with the driving motor so that the rotating shaft 221 can be driven to rotate by the connected motor; the moving contact 21 includes a contact portion and a moving contact mounting portion 213, the contact mounting portion 213 is connected to the rotating portion 22, and the end of the contact mounting portion 213 away from the contact portion is softly connected to the load output part 6 through a copper braided wire; the contact portion of a moving contact 21 is provided with a first moving contact 211 and a second moving contact 212 located on different sides respectively; the moving contact 21 has a main power connection position that rotates with the rotating portion 22 to make the first moving contact 211 contact and cooperate with the first static contact 51, and make the second moving contact 212 away from the second static contact 52, and the moving contact 21 has a standby power connection position that rotates with the rotating portion 22 to make the second moving contact 212 contact and cooperate with the second static contact 52, and make the first moving contact 211 away from the first static contact 51.

[0030] like Figure 6 As shown, an arc extinguishing piece 4 is arranged between the first static contact 51 and the second static contact 52, and the arc extinguishing piece 4 includes an arc extinguishing base 41 and an arc striking protrusion 42 protruding relative to the arc extinguishing base 41; the angle between the arc striking protrusion 42 and the arc extinguishing base 41 is an acute angle, and an opening penetrating the arc extinguishing base 41 is formed at the angle between the arc striking protrusion 42 and the arc extinguishing base 41.

[0031] Furthermore, the arc extinguishing piece 4 is in an arc shape as a whole, the curvature of the arc corresponds to the movement trajectory of the contact part of the moving contact 21, and the inclination directions of the arc striking protrusions 42 located at both ends of the arc extinguishing base 41 are opposite; in this embodiment, refer to Figure 6 A, with the middle of the arc extinguishing base 41 as the symmetry axis, the left arc striking protrusion 42 is inclined to the left, and the right arc striking protrusion 42 is inclined to the right.

[0032] like Figure 4 , Figure 5 As shown, the rotating part 22 includes two rotating plates, the moving contact mounting part 213 is clamped in the spindle-shaped mounting groove 224 between the two rotating plates, and the moving contact mounting part 213 has a spindle-shaped protrusion that matches the spindle-shaped mounting groove 224; springs are sleeved at both ends of the spindle-shaped protrusion and the other end of the spring is against the inner wall of the spindle-shaped mounting groove 224 to provide sufficient pressure on the moving contact.

[0033] like Figure 7As shown, the functional component also includes an elastic component 3, which includes a flexible guide member 31, a spring 32 sleeved outside the guide member 31, and a positioning groove 33 provided on the inner wall of the shell 1 for limiting the positioning end of the guide member 31 and rotating with the guide member 31. The end of the guide member 31 away from the positioning end is a movable end, and the movable end of the guide member 31 is connected to the rotating part 22; the elastic component 3 has a compression state in which the movable end of the rotating part 22 is driven to approach the positioning end and squeeze the spring 32 due to the rotation of the rotating part 22, and the elastic component 3 has a rebound state in which the movable end of the rotating part 22 is driven away from the positioning end due to the rotation of the rotating part 22, thereby causing the spring 32 to rebound.

[0034] Reference Figure 7 The two rotating pieces of the rotating part 22 are both provided with a rotating groove 222, and the guide member 31 is provided with a rotating column 311 extending into the rotating groove 222. The guide member 31 is rotatably connected with the rotating part 22 through the cooperation of the rotating groove 222 and the rotating column 311.

[0035] like Figure 3 , Figure 8 As shown, the functional component also includes a coil frame 7, an iron core 71, and a transmission member 8. The first electromagnetic coil and the second electromagnetic coil are respectively wound on the coil frame 7 on both sides of the iron core 71, and the transmission member 8 is connected to the rotating part 22 and the iron core 71 in a transmission manner; the iron core 71 has a displacement under the action of the first electromagnetic coil to drive the transmission member 8 to displace in the first direction and make the rotating part 22 rotate clockwise to a first position where the first moving contact 211 contacts and cooperates with the first static contact 51, and the iron core 71 has a displacement under the action of the second electromagnetic coil to drive the transmission member 8 to displace in the second direction and make the rotating part 22 rotate counterclockwise to a second position where the second moving contact 212 contacts and cooperates with the second static contact 52.

[0036] The transmission member 8 is provided with a first transmission groove 81, and the rotating part 22 is provided with a transmission protrusion 225 extending into the first transmission groove 81. The transmission protrusion 225 is arranged on the side of the rotating piece away from the above-mentioned rotating groove 222. The transmission member 8 is connected to the rotating part 22 through the first transmission groove 81 and the transmission protrusion 225; the transmission member 8 is provided with a second transmission groove 82, and the iron core 71 is inserted into the second transmission groove 82 to enable the transmission member 8 to be linked with the iron core 71.

[0037] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A dual power switch, comprising a housing (1) and a functional component arranged in the housing (1), characterized in that: The functional component comprises a rotating component (2) for driving a moving contact (21) to rotate to realize circuit switching, a first stationary contact (51) and a second stationary contact (52) arranged at a certain distance, the rotating component (2) comprising a rotating part (22) driven by a rotating shaft (221), and the moving contact (21) is connected to the rotating part (22); The moving contact (21) comprises a contact portion and a moving contact mounting portion (213), and a first moving contact point (211) and a second moving contact point (212) are provided on the contact portion of one moving contact (21) and are located on different sides respectively; The movable contact (21) has a main power connection position that rotates with the rotating part (22) to make the first movable contact (211) contact and cooperate with the first stationary contact (51), and the movable contact (21) has a standby power connection position that rotates with the rotating part (22) to make the second movable contact (212) contact and cooperate with the second stationary contact (52).

2. A dual power conversion switch according to claim 1, characterized in that: An arc extinguishing piece (4) is provided between the first stationary contact (51) and the second stationary contact (52), wherein the arc extinguishing piece (4) comprises an arc extinguishing base (41) and an arc striking protrusion (42) protruding relative to the arc extinguishing base (41).

3. A dual power conversion switch according to claim 2, characterized in that: The included angle between the arc-striking convex portion (42) and the arc-extinguishing base portion (41) is an acute angle, and an opening penetrating the arc-extinguishing base portion (41) is formed at the included angle between the arc-striking convex portion (42) and the arc-extinguishing base portion (41).

4. A dual power conversion switch according to claim 2, characterized in that: The arc extinguishing piece (4) is in an arc shape as a whole, the curvature of the arc matches the movement trajectory of the contact part of the moving contact (21), and the inclination directions of the arc striking protrusions (42) located at both ends of the arc extinguishing base (41) are opposite.

5. The dual power conversion switch according to claim 1, characterized in that: The rotating part (22) comprises two rotating pieces, the moving contact mounting part (213) is clamped in a spindle-shaped mounting groove (224) between the two rotating pieces, and the moving contact mounting part (213) has a spindle-shaped protrusion that matches the spindle-shaped mounting groove (224).

6. The dual power conversion switch according to claim 1, characterized in that: The functional component further comprises an elastic component (3), the elastic component (3) comprising a flexible guide member (31), a spring (32) sleeved outside the guide member (31), and a positioning groove (33) provided on the inner wall of the housing (1) for limiting the positioning end of the guide member (31) and rotatably cooperating with the guide member (31), the end of the guide member (31) away from the positioning end being a movable end, and the movable end of the guide member (31) being connected to the rotating portion (22); The elastic component (3) has a compression state in which the movable end of the elastic component (3) is driven to approach the positioning end and squeeze the spring (32) due to the rotation of the rotating part (22), and a rebound state in which the movable end of the elastic component (3) is driven to move away from the positioning end due to the rotation of the rotating part (22) so as to cause the spring (32) to rebound.

7. A dual power conversion switch according to claim 6, characterized in that: The rotating part (22) is provided with a rotating groove (222), the guiding member (31) is provided with a rotating column (311) extending into the rotating groove (222), and the guiding member (31) is rotatably connected to the rotating part (22) through the cooperation of the rotating groove (222) and the rotating column (311).

8. A dual power conversion switch according to claim 1, 6 or 7, characterized in that: The functional component further comprises a coil frame (7), an iron core (71), and a transmission member (8); a first electromagnetic coil and a second electromagnetic coil are respectively wound on the coil frames (7) on both sides of the iron core (71); and the transmission member (8) is in transmission connection with the rotating part (22) and the iron core (71); The iron core (71) has a function of being displaced under the action of the first electromagnetic coil to drive the transmission member (8) to be displaced in a first direction, causing the rotating portion (22) to rotate clockwise to a first position where the first movable contact (211) contacts and cooperates with the first stationary contact (51); and the iron core (71) has a function of being displaced under the action of the second electromagnetic coil to drive the transmission member (8) to be displaced in a second direction, causing the rotating portion (22) to rotate counterclockwise to a second position where the second movable contact (212) contacts and cooperates with the second stationary contact (52).

9. A dual power conversion switch according to claim 8, characterized in that: The transmission member (8) is provided with a first transmission groove (81), the rotating part (22) is provided with a transmission protrusion (225) extending into the first transmission groove (81), and the transmission member (8) is transmission-connected to the rotating part (22) via the first transmission groove (81) and the transmission protrusion (225).

10. The dual power conversion switch according to claim 8, characterized in that: The transmission member (8) is provided with a second transmission groove (82), and the iron core (71) is inserted into the second transmission groove (82) so that the transmission member (8) and the iron core (71) are linked.

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