Auxiliary switch with self-resetting function
The self-repositioning auxiliary switch addresses the inefficiencies of manual adjustment in FA series switches by using a torsion spring and energy storage elements to automate the switching process, ensuring precise and efficient operation.
Patent Information
- Application Number
- CN202422489440.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-15
AI Technical Summary
During maintenance, the FA series auxiliary switches of conventional electric mechanisms need to be manually adjusted to the intermediate position between the opening position and the closing position. The operation is difficult and inaccurate, which affects the maintenance efficiency.
An auxiliary switch with a self-reset function is designed, and energy storage and release are achieved through the cooperation of the torsion spring and other components. Combined with the contact design of the long and short contact plates, the maximum torque value is reduced, and an indication function is set at the tail end of the switch to determine the on state of the switch.
The self-reset function of the auxiliary switch is realized, which improves adjustment accuracy, reduces operation difficulty, reduces the risk of electric shock, and improves maintenance efficiency.
Smart Images
Figure CN223108707U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electrical switches, and particularly relates to an auxiliary switch with a self-resetting function. Background Art
[0002] The FA series of auxiliary switches are non-manual operating devices, applicable to controlling the closing, opening, interlocking, and signal circuits of various high-voltage switch operating mechanisms. The FA series of auxiliary switches are mostly used in electric isolation / earthing mechanisms. The electric mechanism drives the drive shaft of the auxiliary switch to rotate, thereby realizing the switching operation of the opening and closing of the auxiliary switch.
[0003] Conventional electric mechanisms only have two electric operation positions, namely opening and closing. During the regular maintenance of the mechanism, it is necessary to manually adjust the auxiliary switch to the middle position between the opening position and the closing position, so that both the opening contact and the closing contact are in the open state. After the maintenance is completed, it is restored to the opening state. Such operation is very troublesome, and when the operator manually adjusts the auxiliary switch to the middle position between the opening position and the closing position, the operation difficulty is large, and there are often problems with inaccurate position adjustment, which greatly affects the maintenance efficiency. Content of the Utility Model
[0004] The utility model aims at the above problems, makes up for the deficiencies of the prior art, and provides an auxiliary switch with a self-resetting function; the utility model can effectively store and release energy, realizes the self-resetting function of the auxiliary switch, and can improve the accuracy when adjusting the auxiliary switch to the middle position between the opening position and the closing position.
[0005] To achieve the above object, the utility model adopts the following technical solutions.
[0006] The utility model provides an auxiliary switch with a self-resetting function, including a body part, the body part includes a rear end cover and a plurality of substrate combination units with the same structure connected in parallel. It is characterized in that each substrate combination unit includes a substrate body, a moving contact piece, a short contact piece, and a long contact piece. The short contact piece is connected to the upper right side and the lower right side of the substrate body, the long contact piece is connected to the upper left side and the lower left side of the substrate body, the moving contact piece is located in the middle of the substrate body and can be simultaneously lapped with the long contact piece and the short contact piece after the moving contact piece rotates, and the rear end cover is located at the rearmost end of the body part and is connected to each substrate body of the main body part through a long screw;
[0007] A self-resetting component is arranged at the front end of the main body part, and the self-resetting component includes a protective cover, a mounting plate and a front end cover which are connected to each other in sequence, the front end cover is connected to the main body part by the long screw, and a shaft sleeve is rotatably arranged at the center hole of the front end cover, an energy storage bent plate and a torsion spring are arranged in the protective cover, the torsion spring is installed on the energy storage bent plate and the mounting plate at the same time, and a limiting sleeve is arranged to cooperate with the center hole of the protective cover and the inner circle clearance of the torsion spring, and a driving shaft is arranged through the center hole of the protective cover, the inner ring of the limiting sleeve, the center square hole of the energy storage bent plate, the center hole of the mounting plate and the inner anti-hole of the shaft sleeve, and the driving shaft is extended to the main body part and is connected to the moving contact pieces of all the substrate assembly units at the same time, and the driving shaft can drive the moving contact pieces to rotate.
[0008] Furthermore, the torsion spring is installed in the grooves of the two support arms of the energy storage bent plate after storing force, and is also installed in the grooves of the two support arms of the mounting plate.
[0009] Furthermore, a thin washer is provided between the energy storage bent plate and the mounting plate, and the drive shaft also passes through the inner ring of the thin washer.
[0010] Furthermore, the outer circle of the boss of the sleeve and the clearance of the center hole of the front end cover are used for limiting.
[0011] Furthermore, the driving shaft is sleeved with a first retaining spring after passing through the front end cover, and a gap between the first retaining spring and the substrate body of the substrate assembly unit at the frontmost side of the body part is filled with a first gasket.
[0012] Furthermore, the mounting plate and the protective cover are connected and fixed by long countersunk screws and fasteners, and the mounting plate and the front end cover are fixed by short countersunk screws.
[0013] Furthermore, two anti-loosening nuts are pre-installed in the slots of the front end cover, and the anti-loosening nuts are used to cooperate with the long screw at the main body part to connect the front end cover and the main body part.
[0014] Furthermore, an insulating sleeve is sleeved on the driving shaft at a position corresponding to the inner hole of the moving contact piece, for insulation between the moving contact piece and the driving shaft.
[0015] Furthermore, a second gasket and an indicator sign are provided on the outside of the rear end cover. After passing through the rear end cover, the drive shaft also passes through the second gasket and the square hole in the center of the indicator sign, so that the indicator sign can rotate along with the drive shaft. A second retaining spring is also sleeved on the drive shaft on the outside of the indicator sign. A marking groove is provided on one side of the middle part of the rear end cover, and a fan-shaped identification area is provided on the indicator sign.
[0016] Furthermore, there are two said sector identification areas, and the center lines of the two said sector identification areas form a 90° angle with each other.
[0017] Advantages of the present utility model.
[0018] Through the cooperation of the torsion spring with other components, the present utility model effectively stores and releases energy, realizing the self-resetting function of the auxiliary switch; the original contact piece of the body part is upgraded to a form of cooperation between long and short contact pieces, so that the contacts at both ends of the moving contact piece do not contact the cut-in points of the long and short contact pieces simultaneously, effectively reducing the maximum torque value of the body part and improving the reliability of the self-resetting function; an indication function is set at the tail end, enabling the operator to effectively determine the actual connection condition of the switch contacts and effectively avoiding the electric shock risk. Description of the Drawings
[0019] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0020] Figure 1 is a schematic diagram of the overall external structure of the present utility model.
[0021] Figure 2 is a schematic diagram of the structure of the body part of the present utility model.
[0022] Figure 3 is an exploded structure diagram of the self-resetting component of the present utility model.
[0023] Figure 4 is an exploded structure diagram of the indication part of the present utility model.
[0024] Markings in the figure: 1 is the rear end cover, 2 is the substrate body, 3 is the moving contact piece, 4 is the short contact piece, 5 is the long contact piece, 6 is the long screw, 7 is the protective cover, 8 is the mounting plate, 9 is the front end cover, 10 is the bushing, 11 is the energy storage bending plate, 12 is the torsion spring, 13 is the limit sleeve, 14 is the drive shaft, 15 is the support arm, 16 is the thin washer, 17 is the first circlip, 18 is the first gasket, 19 is the long countersunk head screw, 20 is the fastener, 21 is the short countersunk head screw, 22 is the locknut, 23 is the insulating sleeve, 24 is the second gasket, 25 is the indicator plate, 26 is the second circlip, 27 is the marking groove, 28 is the sector identification area. Specific Embodiments
[0025] As shown in the accompanying drawings, this embodiment provides an auxiliary switch with a self-resetting function, including a main body part, the structure of which is basically consistent with that of a conventional FA product, and the main body part includes a rear end cover 1 and a plurality of substrate assembly units with the same structure connected side by side.
[0026] Each substrate assembly unit includes a substrate body 2, a moving contact piece 3, a short contact piece 4 and a long contact piece 5. The short contact piece 4 is connected to the upper right side and the lower right side of the substrate body 2, and the long contact piece 5 is connected to the upper left side and the lower left side of the substrate body 2. The moving contact piece 3 is located in the middle of the substrate body 2 and can overlap with the long contact piece 5 and the short contact piece 4 at the same time after the moving contact piece 3 is rotated. When the moving contact piece 3 rotates to a fixed angle, the long contact piece 5-moving contact piece 3-short contact piece 4 overlap together to form a passage, and the contacts are connected.
[0027] By cooperating the long contact piece 5 and the short contact piece 4, the contact points at both ends of the moving contact piece 3 do not contact the cut-in points of the long and short contact pieces 4 at the same time, which effectively reduces the maximum torque value of the main body and improves the reliability of the self-reset function.
[0028] The rear end cover 1 is located at the rearmost end of the main body part and is connected to each base body 2 of the main body part through a long screw 6 .
[0029] A self-resetting component is provided at the front end of the main body part, which includes a protective cover 7, a mounting plate 8 and a front end cover 9 which are connected to each other in sequence. The mounting plate 8 and the protective cover 7 are connected and fixed by long countersunk screws 19 and fasteners 20, and the mounting plate 8 and the front end cover 9 are fixed by short countersunk screws 21.
[0030] Two anti-loosening nuts 22 are pre-installed in the slots of the front end cover 9 , and the anti-loosening nuts 22 are used to cooperate with the long screw rod 6 at the main body part to connect the front end cover 9 and the main body part.
[0031] A shaft sleeve 10 is rotatably provided at the center hole of the front end cover 9 , and the outer circle of the boss of the shaft sleeve 10 and the clearance of the center hole of the front end cover 9 are used for limiting.
[0032] An energy storage bent plate 11 and a torsion spring 12 are arranged in the protective cover 7 . The torsion spring 12 is installed in the grooves of the two support arms 15 of the energy storage bent plate 11 after storing force, and is also installed in the grooves of the two support arms 15 of the mounting plate 8 .
[0033] A thin washer 16 is provided between the energy storage bent plate 11 and the mounting plate 8, and the drive shaft 14 also passes through the inner ring of the thin washer 16 to reduce the contact area between the two and reduce the friction force.
[0034] The two hollow places on the mounting plate 8 are covered with three-proof stickers to prevent foreign matter from entering.
[0035] A limit sleeve 13 is arranged in clearance fit with the central hole of the protective cover 7 and the inner circle of the torsion spring 12. A driving shaft 14 is arranged through the central hole of the protective cover 7, the inner ring of the limit sleeve 13, the central square hole of the energy storage bent plate 11, the central hole of the mounting plate 8 and the inner anti-hole of the shaft sleeve 10. After the driving shaft 14 extends to the body part, it is connected to the moving contact pieces 3 of all the substrate combination units at the same time, and the driving shaft 14 can drive the moving contact pieces 3 to rotate. An insulating sleeve 23 is also sleeved on the driving shaft 14 at the position corresponding to the inner hole of the moving contact piece 3 for insulation between the moving contact piece 3 and the driving shaft 14.
[0036] After the driving shaft 14 passes through the front end cover 9, a first snap ring 17 is sleeved, and the gap between the first snap ring 17 and the substrate body 2 of the most front substrate combination unit of the body part is filled with a first gasket 18.
[0037] By driving the driving shaft 14 to drive the energy storage bent plate 11 to rotate, the energy storage bent plate 11 drives one end crank arm of the torsion spring 12 to rotate. The other end crank arm of the torsion spring 12 is fixed by the support arm 15 of the mounting plate 8, and the torsion spring 12 stores energy. After the external force is removed, the torsion spring 12 releases the stored energy and drives the driving shaft 14 to reset.
[0038] A second gasket 24 and a sign plate 25 are also arranged on the outside of the rear end cover 1. After passing through the rear end cover 1, the driving shaft 14 also passes through the square holes in the centers of the second gasket 24 and the sign plate 25. The thickness of the gasket ensures that there is a certain gap between the sign plate 25 and the rear end cover 1.
[0039] The sign plate 25 can rotate following the driving shaft 14. A second snap ring 26 is also sleeved on the driving shaft 14 outside the sign plate 25. A marking groove 27 is arranged on one side of the middle part of the rear end cover 1. A sector marking area 28 is arranged on the sign plate 25. There are two sector marking areas 28, and both are green representing connection in the figure. According to the on-off timing required by the customer, the internal structure of the switch and the angle of the sector green area are designed.
[0040] The center lines of the two sector marking areas 28 are at a 90° angle to each other. Usually, there are two sets of contacts in the auxiliary switch. When the driving shaft 14 rotates to 0 degrees, part of the contacts of the auxiliary switch are closed. When the driving shaft 14 rotates to 90 degrees, the other part of the contacts of the auxiliary switch are closed. Through the above settings of the markings on the sign plate 25, the operator can effectively determine the energized state of the auxiliary switch and effectively avoid the electric shock risk during maintenance.
[0041] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the use requirements, it is within the protection scope of the present invention.
Claims
1. An auxiliary switch with a self-resetting function, comprising a body part, the body part being formed by connecting a rear end cover (1) and a plurality of substrate combination units with the same structure in parallel, characterized in that, Each of the substrate assembly units comprises a substrate body (2), a movable contact piece (3), a short contact piece (4) and a long contact piece (5); the short contact piece (4) is connected to the upper right side and the lower right side of the substrate body (2); the long contact piece (5) is connected to the upper left side and the lower left side of the substrate body (2); the movable contact piece (3) is located in the middle of the substrate body (2) and can overlap with the long contact piece (5) and the short contact piece (4) at the same time after the movable contact piece (3) rotates; the rear end cover (1) is located at the rear end of the body part and is connected to each of the substrate bodies (2) of the body part via a long screw (6); A self-resetting component is provided at the front end of the main body part, and the self-resetting component comprises a protective cover (7), a mounting plate (8) and a front end cover (9) which are connected to each other in sequence, the front end cover (9) being connected to the main body part via the long screw (6), a shaft sleeve (10) being rotatably provided at the center hole of the front end cover (9), an energy storage bent plate (11) and a torsion spring (12) being provided in the protective cover (7), the torsion spring (12) being installed on both the energy storage bent plate (11) and the mounting plate (8), and being connected to the protective cover (7). A limit sleeve (13) is provided to cooperate with the central hole of the protective cover (7) and the inner circle of the torsion spring (12) in clearance, and a drive shaft (14) is provided through the central hole of the protective cover (7), the inner circle of the limit sleeve (13), the central square hole of the energy storage bending plate (11), the central hole of the mounting plate (8) and the inner anti-hole of the shaft sleeve (10). After the drive shaft (14) extends to the main body part, it is simultaneously connected to the moving contact pieces (3) of all the base plate assembly units, and the drive shaft (14) can drive the moving contact pieces (3) to rotate.
2. An auxiliary switch with a self-resetting function according to claim 1, characterized in that, The torsion spring (12) is installed in the grooves of the two support arms (15) of the energy storage bent plate (11) after storing force, and is also installed in the grooves of the two support arms (15) of the mounting plate (8).
3. The auxiliary switch with a self-resetting function according to claim 1, wherein A thin washer (16) is provided between the energy storage bent plate (11) and the mounting plate (8), and the drive shaft (14) also passes through the inner ring of the thin washer (16).
4. An auxiliary switch with a self-resetting function according to claim 1, characterized in that, The outer circle of the boss of the shaft sleeve (10) and the clearance of the center hole of the front end cover (9) are used for limiting.
5. An auxiliary switch with a self-resetting function according to claim 1, characterized in that The drive shaft (14) passes through the front end cover (9) and is sleeved with a first retaining spring (17), and a gap between the first retaining spring (17) and the base plate body (2) of the base plate assembly unit at the frontmost side of the body portion is filled with a first gasket (18).
6. The auxiliary switch with a self-resetting function according to claim 1, characterized in that, The mounting plate (8) and the protective cover (7) are connected and fixed via long countersunk screws (19) and fasteners (20), and the mounting plate (8) and the front end cover (9) are fixed via short countersunk screws (21).
7. An auxiliary switch with a self-resetting function according to claim 1, characterized in that, Two anti-loosening nuts (22) are pre-installed in the slots of the front end cover (9), and the anti-loosening nuts (22) are used to cooperate with the long screw rod (6) at the main body portion to connect the front end cover (9) and the main body portion.
8. An auxiliary switch with a self-resetting function according to claim 1, characterized in that An insulating sleeve (23) is also sleeved on the drive shaft (14) corresponding to the inner hole of the moving contact piece (3) for insulating between the moving contact piece (3) and the drive shaft (14).
9. An auxiliary switch with a self-resetting function according to claim 1, characterized in that, A second gasket (24) and an indicator plate (25) are also arranged on the outer side of the rear end cover (1). After passing through the rear end cover (1), the drive shaft (14) also passes through a square hole in the center of the second gasket (24) and the indicator plate (25), so that the indicator plate (25) can rotate following the drive shaft (14). A second circlip (26) is also sleeved on the drive shaft (14) outside the indicator plate (25). A marking groove (27) is arranged on one side of the middle part of the rear end cover (1), and a sector marking area (28) is arranged on the indicator plate (25).
10. An auxiliary switch with a self-resetting function according to claim 9, characterized in that, There are two sector marking areas (28), and the center lines of the two sector marking areas (28) are mutually at a 90° angle.