Dual-power automatic change-over switch

Abstract

The utility model discloses a dual-power-supply automatic change-over switch. The dual-power-supply automatic change-over switch comprises a body. The transmission mechanism and the driving mechanism are pivotally arranged on the body; the transmission mechanism has a conducting state or a non-conducting state; the movable mechanism is arranged on the transmission mechanism in a sleeved mode, the movable mechanism is arranged in the driving mechanism in a pivoted mode, and the movable mechanism has a keeping state, an unlocking state and a critical state converting from the keeping state to the unlocking state. The receding through hole abuts against the second protruding block, the contact area of the receding through hole and the second protruding block is increased, the stress needing to be borne between the cam and the movable wheel is reduced, and then the service life is prolonged; through mutual cooperation of the movable wheel, the pull rod, the tension spring, the control wheel and the body, the functions of rapid breaking and transmission mechanism switching speed reduction can be achieved, and the product has the advantages that the service life is prolonged, the reliability is improved, and the failure rate is reduced.

Description

Technical Field

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

[0002] The dual power transfer switch is used to ensure continuous power supply. When the normal power supply suddenly fails or there is a power outage, the dual power transfer switch can be used to switch to the backup power supply so that the electrical equipment can still operate normally.

[0003] According to the Chinese patent application announcement number CN117253728A, "A dual power automatic transfer switch operating mechanism and dual power transfer switch," the operating mechanism includes: a transmission mechanism, which is driven by a power mechanism and installed on the switch body, and the transmission mechanism is linked with the moving contact assembly, and has a first position and a second position corresponding to the common position and the standby position of the moving contact assembly respectively; a damping mechanism, which is arranged on the switch body and cooperates with the transmission mechanism in the switching process between the first position and the second position. Thereby slowing down the switching speed of the transmission mechanism, ensuring that the moving contact is in contact and connected with the static contact on the other side only after the arc of the static contact on one side is extinguished, thereby improving safety and reliability.

[0004] However, the damping mechanism of the above technical solution has more parts, resulting in reduced operational reliability and a high risk of failure rate; the meshing contact area between the first toothed member and the second toothed member is small, resulting in increased contact stress on the gear surface, accelerating fatigue damage and wear on the tooth surface, thereby reducing the service life of the toothed member, and further affecting the service life of the dual power automatic transfer switch. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was produced in this context. Summary of the invention

[0005] The purpose of the utility model is to overcome the shortcomings of the above technical solutions and provide a product with improved service life, increased reliability and reduced failure rate.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A dual power automatic transfer switch comprises a body; a transmission mechanism and a drive mechanism, which are pivotally arranged on the body; the transmission mechanism has a conducting state or a non-conducting state; a movable mechanism, which is sleeved on the transmission mechanism, and the movable mechanism is pivotally arranged in the drive mechanism, and the movable mechanism has a holding state, an unlocking state, and a critical state of changing from the holding state to the unlocking state; when the movable mechanism is not active, it is in a holding state; when the drive mechanism rotates, the movable mechanism stores energy and is in a critical state; the drive mechanism continues to rotate and pushes the movable mechanism to move, so that the holding state is disintegrated, and the movable mechanism releases energy to make the movable mechanism suddenly move toward the direction after the drive mechanism moves, thereby driving the transmission mechanism to rotate.

[0008] Preferably, a plurality of common static contacts are provided on one side of the body, and an upper static contact and a lower static contact are provided at the upper and lower parts of the other side, corresponding to one of the common static contacts, and limiting plates are provided on both sides of one end of the body, and the body is provided with a limiting groove.

[0009] Preferably, a plurality of arc-extinguishing grids are provided at the upper static contact and the lower static contact, and a control rod that can be taken away is provided on the outer wall of the body.

[0010] Preferably, the transmission mechanism includes a cam and a contact column, the cam is pivotally arranged on the body, one end of the cam is evenly distributed with a plurality of first protrusions with a circle as the axis, the other end is provided with a first pressure-bearing cavity, and trigger parts are provided on both sides of the cam.

[0011] Preferably, the contact column is provided with a moving contact and abuts against a common static contact, one end of the contact column is provided with a plurality of second protrusions evenly distributed with a dot as the axis, and the other end is provided with a second pressure-bearing cavity in which the corresponding second protrusions are arranged, and one of the second protrusions of the contact column is arranged in the first pressure-bearing cavity and abuts against the side wall of the first pressure-bearing cavity.

[0012] Preferably, the driving mechanism includes a control wheel and a motor, the shaft of the motor is connected and fixed to the control wheel, the control wheel is provided with a limit block and is located between the limit plates, the limit block is provided with a hole for inserting the control rod, both ends of the control wheel are provided with movable through holes, the movable through holes are provided with a retaining groove, and heightening surfaces located on both sides of the retaining groove, and a disintegration surface located adjacent to the heightening surface, the control wheel is provided with a pull rod, and is slidably arranged in the limit groove.

[0013] Preferably, the movable mechanism includes a movable wheel and a tension spring. The movable wheel is sleeved on the cam and is provided with a clearance hole corresponding to the first protrusion. The clearance hole abuts against the side wall of the first protrusion. The movable wheel is provided with a pull rod that can move up and down and is overlapped on the movable through hole.

[0014] Preferably, one end of the tension spring is connected to the pull rod of the movable wheel, and the other end is connected to the pull rod of the control wheel, so that the pull rod of the movable wheel enters the retaining groove.

[0015] Preferably, the main body is provided with a baffle which can move left and right, and the baffle is arranged above the limit block. Micro switches are respectively provided on both sides of the other end of the main body and are located on the movable track of the trigger part.

[0016] Beneficial effects:

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model increases the contact area between the above-mentioned components, reduces the stress that a single or two components need to bear, increases the transmission force, reduces the wear between the above-mentioned components, and thus increases the service life of the dual power automatic transfer switch by abutting the yielding through hole of the movable wheel with the first protrusion of the cam, abutting the second protrusion between the contact posts with the second pressure-bearing cavity, and contacting the second protrusion of the contact post with the first pressure-bearing cavity of the movable wheel.

[0019] (2) The utility model releases energy through the tension spring, so that the movable wheel jumps to the position after the control wheel moves, thereby driving the moving contact to quickly disconnect from the lower static contact or the upper static contact, thereby reducing the required disconnection time and improving the arc extinguishing ability. After the moving contact is disconnected from the lower static contact or the upper static contact, the moving contact temporarily does not abut against the lower static contact or the upper static contact. Only when the control wheel is activated again, the moving contact abuts against one of the lower static contact or the upper static contact, thereby achieving a buffering effect. Through the mutual cooperation of the movable wheel, the pull rod, the tension spring, the control wheel, and the main body, it can have the effect of quickly disconnecting and slowing down the switching speed of the transmission mechanism. Compared with the technical solution cited in the background technology, the overall structure is simple and the manufacturing cost is low, so that the product has the advantages of increased reliability and reduced failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the exploded structure of a dual power automatic transfer switch of the utility model;

[0021] Figure 2 This is a front view of a dual power automatic transfer switch in a holding state according to the utility model;

[0022] Figure 3 It is a rear view of a dual power automatic transfer switch in a holding state according to the utility model;

[0023] Figure 4 This is a front view of a dual power automatic transfer switch in a critical state according to the utility model;

[0024] Figure 5This is a front view of a dual power automatic transfer switch of the utility model, which is in a critical state and changes to a holding state;

[0025] Figure 6 This is a rear view of a dual power automatic transfer switch of the utility model when the critical state is changed to the holding state;

[0026] Figure 7 The utility model is a double power automatic transfer switch explosion Figure 1 ;

[0027] Figure 8 The utility model is a double power automatic transfer switch explosion Figure 2 ;

[0028] Fig. 9 The utility model is a double power automatic transfer switch explosion Figure 3 ;

[0029] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0030] Reference numerals: 1, body; 2, transmission mechanism; 3, driving mechanism; 4, movable mechanism; 5, micro switch; 6, arc extinguishing grid; 7, control rod; 8, pull rod;

[0031] 11. Common static contact; 12. Upper static contact; 13. Lower static contact; 14. Limit plate; 15. Limit groove; 16. Baffle;

[0032] 21. Cam; 22. Contact column;

[0033] 211, first protrusion; 212, first pressure-bearing cavity; 213, triggering part;

[0034] 221, moving contact; 222, second protrusion; 223, second pressure-bearing cavity;

[0035] 31. control wheel; 32. motor;

[0036] 311, limit block; 312, hole; 313, movable through hole; 314, retaining groove; 315, height-increasing surface; 316, disassembly surface;

[0037] 41. movable wheel; 42. tension spring;

[0038] 411. Make way for through holes. DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0041] Reference example Figures 1 to 9 A dual power automatic transfer switch, comprising a body 1; a transmission mechanism 2 and a driving mechanism 3, which are pivotally arranged on the body 1; the transmission mechanism 2 has a conducting state or a non-conducting state; a movable mechanism 4, which is sleeved on the transmission mechanism 2, and the movable mechanism 4 is pivotally arranged in the driving mechanism 3, and the movable mechanism 4 has a holding state, an unlocking state, and a critical state of changing from the holding state to the unlocking state; when the movable mechanism 4 is not active, it is in the holding state; when the driving mechanism 3 rotates, the movable mechanism 4 stores energy and puts the movable mechanism 4 in the critical state; the driving mechanism 3 continues to rotate and pushes the movable mechanism 4 to move, so that the holding state is disintegrated, and the movable mechanism 4 releases energy to make the movable mechanism 4 jump and move toward the position after the driving mechanism 3 moves, thereby driving the transmission mechanism 2 to rotate;

[0042] It is worth mentioning that a plurality of common static contacts 11 are provided on one side of the body 1, and an upper static contact 12 and a lower static contact 13 are provided at the upper and lower parts of the other side, and correspond to one common static contact 11. Limiting plates 14 are provided on both sides of one end of the body 1, and the body 1 is provided with a limiting groove 15. The limiting plate 14 serves to limit the rotation range of the control wheel 31, and the limiting groove 15 provides support for the pull rod 8 of the control wheel 31, so as to achieve the function of storing energy of the tension spring 42.

[0043] It is worth mentioning that a plurality of arc extinguishing grids 6 are provided at the upper static contact 12 and the lower static contact 13, and a control rod 7 for taking is provided on the outer wall of the body 1. The arc extinguishing grid 6 plays the role of extinguishing the arc, and the control rod 7 plays the role of manually controlling the control wheel 31;

[0044] It is worth mentioning that the transmission mechanism 2 includes a cam 21 and a contact column 22. The cam 21 is pivotally arranged on the body 1. One end of the cam 21 is evenly distributed with a plurality of first protrusions 211 with a dot as the axis, and the other end is provided with a first pressure-bearing cavity 212. Both sides of the cam 21 are provided with triggering parts 213. The first protrusion 211 is used in conjunction with the yielding through hole 411, and the first pressure-bearing cavity 212 is used in conjunction with the second protrusion 222.

[0045] It is worth mentioning that the contact column 22 is provided with a moving contact 22123 and abuts against the common static contact 11. One end of the contact column 22 is evenly distributed with a plurality of second protrusions 222 with the dot as the axis, and the other end is provided with a second pressure-bearing cavity 223 in which the second protrusion 222 is arranged. The second protrusion 222 of one of the contact columns 22 is arranged in the first pressure-bearing cavity 212 and abuts against the side wall of the first pressure-bearing cavity 212. By making way for the through hole 411 to abut against the first protrusion 211, the second protrusion 222 to abut against the second pressure-bearing cavity 223, and the second protrusion 222 to contact the first pressure-bearing cavity 212, the contact area of ​​the above-mentioned components is increased, the stress that a single or two components need to bear is reduced, the transmission force is increased, the wear between the above-mentioned components is reduced, and the service life of the dual power automatic transfer switch is increased.

[0046] It is worth mentioning that the driving mechanism 3 includes a control wheel 31 and a motor 32. The shaft of the motor 32 is connected and fixed to the control wheel 31. The control wheel 31 is provided with a limit block 311 and is located between the limit plates 14. The limit block 311 is provided with a hole 312 for inserting the control rod 7. Both ends of the control wheel 31 are provided with movable through holes 313. The movable through holes 313 are provided with retaining grooves 314, and heightening surfaces 315 located on both sides of the retaining grooves 314, and disassembly surfaces adjacent to the heightening surfaces 315. 316, the control wheel 31 is provided with a pull rod 8, and is slidably arranged in the limit groove 15, the movable through hole 313 is convenient for the pull rod 8 of the movable wheel 41 to move along the track therein, the holding groove 314 allows the pull rod 8 of the movable wheel 41 to enter therein, so that after the tension spring 42 releases energy, the movable wheel 41 quickly jumps to the position after the control wheel 31 moves, the heightening surface 315 further accelerates the distance between the pull rods 8, and then accelerates the energy storage of the tension spring 42, and the disassembly surface 316 disassembles the holding state;

[0047] It is worth mentioning that the movable mechanism 4 includes a movable wheel 41 and a tension spring 42. The movable wheel 41 is sleeved on the cam 21 and is provided with a clearance hole 411 corresponding to the first protrusion 211. The clearance hole 411 and the side wall of the first protrusion 211 abut against each other. The movable wheel 41 is provided with a pull rod 8 that can move up and down and overlap the movable through hole 313. The clearance through hole 411 increases the contact area with the first protrusion 211. The pull rod 8 that can move up and down cooperates with the retaining groove 314 and the heightening surface 315.

[0048] It is worth mentioning that one end of the tension spring 42 is connected to the pull rod 8 of the movable wheel 41, and the other end is connected to the pull rod 8 of the control wheel 31, so that the pull rod 8 of the movable wheel 41 enters the retaining groove 314. When the transmission mechanism 2 is not turned on, the distance between the pull rod 8 of the control wheel 31 and the pull rod 8 of the movable wheel 41 is the closest, and the tension spring 42 is in a relaxed state; when the transmission mechanism 2 is turned on, the distance between the pull rod 8 of the control wheel 31 and the pull rod 8 of the movable wheel 41 is far, and the tension spring 42 is in a released state, so that the movable wheel 41 maintains the position after moving;

[0049] It is worth mentioning that the main body 1 is provided with a baffle 16 which can move left and right, and the baffle 16 is arranged above the limit block 311. Micro switches 5 are respectively provided on both sides of the other end of the main body 1 and are located on the moving track of the trigger part 213. By pushing the baffle 16, the hole 312 is exposed to the line of sight, and the micro switch 5 is electrically connected to the motor 32. When the trigger part 213 triggers the micro switch 5, the running motor 32 stops running to prevent the motor 32 from continuing to drive the control wheel 31 to rotate.

[0050] The use principle of the utility model is now described as follows:

[0051] Example 1

[0052] When the transmission mechanism 2 is not conducting, as shown in the attached Figure 3 As shown, the motor 32 runs and drives the control wheel 31 to rotate leftward to attach Figure 2 As shown in the figure, the holding groove 314 causes the pull rod 8 of the movable wheel 41 to move upward and leave the holding groove 314. When the pull rod 8 of the control wheel 31 gradually moves to one side of the limiting groove 15, the distance between the pull rod 8 of the control wheel 31 and the pull rod 8 of the movable wheel 41 is lengthened, thereby causing the tension spring 42 to store energy. The heightening surface 315 pushes the pull rod 8 of the movable wheel 41 to continue to move upward, further accelerating the energy storage of the tension spring 42, and causing the movable wheel 41 to be in a critical state. Figure 4 As shown;

[0053] When the disassembling part contacts the pull rod 8 of the movable wheel 41 and pushes the pull rod 8 of the movable wheel 41 to move, the holding state of the movable wheel 41 is disassembled, and the tension spring 42 releases energy, quickly pulls the pull rod 8 of the movable wheel 41 to jump into the holding groove 314, and drives the movable wheel 41, the cam 21, and the contact column 22 to rotate quickly. Figure 5 As shown, one end of the moving contact 221 is abutted against the upper static contact 12, so that the current flows through the common static contact 11, the moving contact 22123, and the upper static contact 12, thereby putting the transmission mechanism 2 in a conducting state. At this time, the movable wheel 41 is in a holding state. At the same time, the contact part abuts against the left micro switch 5, and the motor 32 stops moving. Figure 6 shown.

[0054] Example 2

[0055] When it is necessary to switch to the lower static contact 13, the motor 32 runs in the opposite direction, driving the control wheel 31 to rotate rightward, the pull rod 8 of the control wheel 31 leaves the retaining groove 314, and lengthens the distance between the pull rod 8 of the control wheel 31 and the pull rod 8 of the movable wheel 41, so that the tension spring 42 stores energy until the disassembly part pushes the pull rod 8 of the movable wheel 41, so that the retaining state of the movable wheel 41 is disassembled, and the tension spring 42 releases energy, quickly pulls the pull rod 8 of the movable wheel 41 to jump into the retaining groove 314, and drives the movable wheel 41, the cam 21, and the contact column 22 to rotate quickly and reset, thereby quickly cutting off the contact between the upper static contact 12 and the movable contact 22123, thereby shortening the cutting time and improving the arc extinguishing ability;

[0056] At this time, the transmission mechanism 2 is in an unconnected state, thereby achieving deceleration and buffering of the transmission mechanism 2 and preventing short-circuit explosion. At the same time, the motor 32 continues to run in the opposite direction, causing the control wheel 31 to rotate to the right, so that the tension spring 42 stores energy until the disassembly part pushes the pull rod 8 of the movable wheel 41, so that the holding state of the movable wheel 41 is disintegrated, and the tension spring 42 releases energy, quickly pulls the pull rod 8 of the movable wheel 41 to jump into the retaining groove 314, and drives the movable wheel 41, the cam 21, and the contact column 22 to rotate rapidly, so that one end of the moving contact 221 abuts against the lower static contact 13, so that the current flows through the common static contact 11, the moving contact 22123, and the lower static contact 13, thereby putting the transmission mechanism 2 in a conductive state, completing the switching steps of the dual power automatic conversion switch.

[0057] Example 3

[0058] By pushing the baffle 16, the hole 312 is exposed to the user's field of vision, the control rod 7 placed on the main body 1 is taken and inserted into the hole 312, and a force is applied to the control rod 7 to the left or right. The specific operating principles of the transmission mechanism 2 and the movable mechanism 4 are the same as those described above and will not be elaborated here.

[0059] The above design scheme can make the product achieve the advantages of increased service life, increased reliability and reduced failure rate.

[0060] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A dual power automatic transfer switch, characterized in that: include Ontology(1); A transmission mechanism (2) and a driving mechanism (3) are pivotally mounted on the body (1); The transmission mechanism (2) has a conducting state or a non-conducting state; A movable mechanism (4) is sleeved on the transmission mechanism (2), the movable mechanism (4) is pivotally arranged in the driving mechanism (3), and the movable mechanism (4) has a holding state, an unlocking state, and a critical state of changing from the holding state to the unlocking state; When the movable mechanism (4) is not active, it is in a holding state; When the driving mechanism (3) rotates, the movable mechanism (4) stores energy and puts the movable mechanism (4) into a critical state; The driving mechanism (3) continues to rotate and pushes the movable mechanism (4) to move, so that the holding state is disintegrated. The movable mechanism (4) releases energy to make the movable mechanism (4) suddenly move toward the position after the driving mechanism (3) moves, thereby driving the transmission mechanism (2) to rotate.

2. The dual power automatic transfer switch according to claim 1, characterized in that: A plurality of common static contacts (11) are provided on one side of the body (1), and an upper static contact (12) and a lower static contact (13) are provided at the upper and lower parts of the other side, corresponding to one of the common static contacts (11). Limiting plates (14) are provided on both sides of one end of the body (1), and the body (1) is provided with a limiting groove (15).

3. The dual power automatic transfer switch according to claim 2 is characterized in that: A plurality of arc extinguishing grids (6) are provided at the upper stationary contact (12) and the lower stationary contact (13), and a control rod (7) that can be taken away is provided on the outer wall of the body (1).

4. The dual power automatic transfer switch according to claim 3 is characterized in that: The transmission mechanism (2) comprises a cam (21) and a contact column (22); the cam (21) is pivotally arranged on the body (1); one end of the cam (21) is evenly distributed with a plurality of first protrusions (211) with a circle as the axis, and the other end is provided with a first pressure-bearing cavity (212); and trigger parts (213) are provided on both sides of the cam (21).

5. The dual power automatic transfer switch according to claim 4, characterized in that: The contact column (22) is provided with a moving contact (221) and abuts against the common static contact (11); one end of the contact column (22) is provided with a plurality of second protrusions (222) evenly distributed with a dot as the axis; the other end is provided with a second pressure-bearing cavity (223) in which the corresponding second protrusions (222) are arranged; one of the second protrusions (222) of the contact column (22) is arranged in the first pressure-bearing cavity (212) and abuts against the side wall of the first pressure-bearing cavity (212).

6. The dual power automatic transfer switch according to claim 5, characterized in that: The driving mechanism (3) comprises a control wheel (31) and a motor (32). The shaft of the motor (32) is connected and fixed to the control wheel (31). The control wheel (31) is provided with a limit block (311) and is located between the limit plates (14). The limit block (311) is provided with a hole (312) for inserting a control rod (7). Both ends of the control wheel (31) are provided with movable through holes (313). The movable through holes (313) are provided with a retaining groove (314), and heightening surfaces (315) located on both sides of the retaining groove (314), and a disassembly surface (316) located adjacent to the heightening surface (315). The control wheel (31) is provided with a pull rod (8) and is slidably arranged in the limit groove (15).

7. The dual power automatic transfer switch according to claim 6, characterized in that: The movable mechanism (4) comprises a movable wheel (41) and a tension spring (42). The movable wheel (41) is sleeved on the cam (21) and is provided with a clearance hole (411) corresponding to the first protrusion (211). The clearance hole (411) and the side wall of the first protrusion (211) are in contact with each other. The movable wheel (41) is provided with a pull rod (8) that can move up and down and overlaps the movable through hole (313).

8. The dual power automatic transfer switch according to claim 7, characterized in that: One end of the tension spring (42) is connected to the pull rod (8) of the movable wheel (41), and the other end is connected to the pull rod (8) of the control wheel (31), so that the pull rod (8) of the movable wheel (41) enters the retaining groove (314).

9. The dual power automatic transfer switch according to claim 6, characterized in that: The body (1) is provided with a baffle (16) that can move leftward and rightward, and the baffle (16) is arranged above the limit block (311). Micro switches (5) are respectively provided on both sides of the other end of the body (1) and are located on the moving track of the trigger part (213).

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