Relay with auxiliary contact structure
By introducing auxiliary contact structures into the relays to monitor the disconnection status of the main load circuit, the problem that existing relays cannot monitor the complete disconnection of the main circuit is solved, and the safety and reliability of the product are significantly improved.
Patent Information
- Application Number
- CN202420588448.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing relay lacks auxiliary contact structure, which makes it impossible to monitor whether the main circuit load is completely broken, increasing the frequency of short circuit failures, affecting the safety and reliability of the product.
A relay with an auxiliary contact structure is designed, including a base, a magnetic part, a main load circuit part and an auxiliary detection part. The auxiliary detection part monitors the disconnection state of the main load circuit through the cooperation of the spring and the contacts to ensure the complete disconnection of the circuit.
Through the monitoring function of the auxiliary contacts, it is effectively judged whether the main load circuit is completely disconnected, which improves the safety and reliability of the relay and reduces the frequency of short-circuit faults.
Smart Images
Figure CN222619651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of relays, in particular to a relay with an auxiliary contact structure. Background Art
[0002] A relay is an electrical control device. When the change in input quantity reaches the specified requirement, it causes a predetermined step change in the controlled quantity in the electrical output circuit. With the development of new energy technologies such as photovoltaic energy storage, solar energy, and wind energy, the safety conditions for the use of power relays are becoming more and more stringent, and the service life of the relay itself is also increasingly required.
[0003] The relay in the prior art lacks an auxiliary contact structure, and therefore lacks the ability to monitor whether the main circuit load is completely disconnected. When the contacts stick, the frequency of short-circuit failures during product use increases because the product structure lacks forced-guided breaking capability, which can easily cause a fire due to a short circuit in the circuit, resulting in low safety and reliability of relay products during use, and failing to better meet the usage needs of customers and the market.
[0004] In view of this, we propose a relay with auxiliary contact structure. Utility Model Content
[0005] The purpose of the utility model is to provide a relay with an auxiliary contact structure to solve the problems raised in the above background technology.
[0006] To achieve the above object, the utility model provides a relay with an auxiliary contact structure, comprising a base, wherein the upper surface of the base is respectively provided with a magnetic part, a main load circuit part and an auxiliary detection part, wherein the main load circuit part is arranged in front of the magnetic part, and the auxiliary contact part is arranged on one side of the magnetic part;
[0007] The auxiliary detection part includes a moving spring foot, an auxiliary moving spring, an auxiliary static spring and an auxiliary contact. The base is provided with an assembly groove for installing the moving spring foot and the auxiliary static spring. The upper end of the moving spring foot is fixedly connected with two mounting protrusions. The upper end of the auxiliary moving spring is provided with two mounting holes adapted to the mounting protrusions. The lower end of the auxiliary moving spring and the upper end of the auxiliary static spring are both provided with contact grooves for installing auxiliary contacts, and the two auxiliary contacts correspond to each other.
[0008] A push-pull rod is fixedly connected to one side of the main load circuit part, a push-pull groove is provided at one end of the push-pull rod close to the auxiliary detection part, and a control groove corresponding to the push-pull groove is provided on the auxiliary dynamic spring.
[0009] As a further improvement of the technical solution, the magnetic part includes a yoke, an iron core, a coil bobbin and a coil. A U-shaped clamping block adapted to the front side of the lower surface of the coil bobbin is provided on the upper surface of the base. Coil terminals are symmetrically connected to the rear side of the lower surface of the coil bobbin. An assembly groove for installing the coil terminals is provided inside the base. An iron core is fixedly installed inside the coil bobbin. A plugging groove adapted to the lower end of the yoke is provided on the upper surface of the base. An adaptation groove adapted to the iron core is provided inside the yoke. One end of the iron core extends into the adaptation groove. The coil is wound outside the coil bobbin.
[0010] As a further improvement of the technical solution, the main load circuit part includes a moving reed, a static reed, an insulating plate, a moving contact, a static contact and a mounting block. Mounting grooves for installing the static reeds are symmetrically provided on the upper surface of the base. Contact grooves for installing the static contacts are provided inside both of the static reeds. An insulating plate is provided directly in front of the magnetic part. A positioning groove for installing the mounting block is provided on the front surface of the insulating plate. Two fixing screws are threadedly connected inside the mounting block. Threaded grooves adapted to the fixing screws are symmetrically provided inside the insulating plate. The lower end of the mounting block is fixedly connected to the moving reed through a connecting rod. Contact grooves for installing the moving contacts are symmetrically provided inside the moving reed. The two moving contacts correspond to the static contacts one by one.
[0011] As a further improvement of the technical solution, a control board is provided on the rear surface of the insulating plate. Threaded holes adapted to the fixing screws are symmetrically provided inside the control board. Hinge grooves adapted to the front ends of the yokes are provided at the upper ends on both sides of the control board. An activity groove adapted to the upper end of the control board is provided at the front end of the yoke. Clamping blocks are fixedly connected to the upper surfaces of the control board and the yoke. An auxiliary spring is provided between the two clamping blocks. The end of the push rod away from the auxiliary detection part is fixedly connected to the outer wall of the insulating plate.
[0012] As a further improvement of the technical solution, a mounting groove for installing an L-shaped positioning plate is provided on the front surface of the base. The front surface of the moving reed abuts against the inner wall of the L-shaped positioning plate.
[0013] As a further improvement of the technical solution, stabilizing bumps are symmetrically and fixedly connected to the lower surface of the L-shaped positioning plate and the outer walls of the two static reeds. The outer walls of the stabilizing bumps abut against the inner walls of the mounting grooves.
[0014] Compared with the prior art, the beneficial effects of the present utility model are:
[0015] In this relay with an auxiliary contact structure, through the set auxiliary detection part, when the normally closed contact in the main load circuit part switches from the static state to the conducting state, driven by the push-pull rod, the auxiliary moving spring is restricted by the moving spring glue, so that the auxiliary contact on the auxiliary moving spring will be separated from the auxiliary contact on the auxiliary static spring, switching from the normally closed state to the normally open state. Thus, the main load circuit part can be monitored according to the closed or open state of the auxiliary contact circuit to judge whether it is completely disconnected or closed in place, thereby playing a protective role for the circuit, greatly improving the safety and reliability of the relay during use, better meeting the needs of customers and the market, and enhancing the core competitiveness of the product. Brief Description of the Drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 It is an exploded structure diagram of the present utility model;
[0018] Figure 3 It is a partial split structure diagram of the main load circuit part of the present utility model;
[0019] Figure 4 It is a split structure diagram of the auxiliary detection part of the present utility model;
[0020] Figure 5 It is a structure diagram of the stabilizing bump of the present utility model.
[0021] The meanings of each label in the figure are as follows:
[0022] 1. Base; 2. Magnetic part; 3. Main load circuit part; 4. Auxiliary detection part; 5. Moving spring foot; 6. Auxiliary moving spring; 7. Auxiliary static spring; 8. Auxiliary contact; 9. Push-pull rod; 10. Push-pull groove; 11. Control groove; 12. Yoke; 13. Iron core; 14. Coil holder; 15. Coil; 16. Coil terminal; 17. Insertion slot; 18. Adaptation slot; 19. Moving spring piece; 20. Static spring piece; 21. Insulating board; 22. Moving contact; 23. Static contact; 24. Mounting block; 25. Fixing screw; 26. Connecting rod; 27. Mounting groove; 28. Control board; 29. Hinge groove; 30. Clamping block; 31. Auxiliary spring; 32. L-shaped positioning plate; 33. Stabilizing bump; 34. Mounting bump; 35. C-shaped clamping block. Detailed Embodiment
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0024] See also Figure 1 - Figure 5 As shown, this embodiment provides a relay with an auxiliary contact 8 structure, including a base 1, the upper surface of the base 1 is respectively provided with a magnetic part 2, a main load circuit part 3 and an auxiliary detection part 4, the main load circuit part 3 is arranged in front of the magnetic part 2, and the auxiliary contact 8 is arranged on one side of the magnetic part 2;
[0025] The auxiliary detection part 4 includes a movable spring foot 5, an auxiliary movable spring 6, an auxiliary static spring 7 and an auxiliary contact 8. An assembly groove for mounting the movable spring foot 5 and the auxiliary static spring 7 is provided inside the base 1. Two mounting protrusions 34 are fixedly connected to the upper end of the movable spring foot 5. Two mounting holes matching the mounting protrusions 34 are provided at the upper end of the auxiliary movable spring 6. Contact grooves for mounting the auxiliary contacts 8 are provided at the lower end of the auxiliary movable spring 6 and the upper end of the auxiliary static spring 7, and the two auxiliary contacts 8 correspond to each other.
[0026] Among them, a push-pull rod 9 is fixedly connected to one side of the main load circuit part 3, a push-pull groove 10 is opened at one end of the push-pull rod 9 close to the auxiliary detection part 4, and a control groove 11 corresponding to the push-pull groove 10 is opened on the auxiliary dynamic spring 6.
[0027] The above working principle: During use, after power is supplied to the magnetic part 2 of the relay, in the process of the magnetic part 2 converting electricity into magnetism, the main load circuit part 3 drives the auxiliary moving contact 6 under the action of the push rod 9 to move under the restriction of the moving contact foot 5, so that the auxiliary contact 8 on the auxiliary moving contact 6 is disengaged from the auxiliary contact 8 on the auxiliary static contact 7. When the magnetic part 2 of the relay is powered off, the main load circuit part 3 of the relay is disconnected, and the two auxiliary contacts 8 are in contact and conducting. When the magnetic part 2 of the relay is powered off, the main load circuit part 3 is controlled to be disconnected. Under the action of the push rod 9, the auxiliary moving contact 6 is driven to move under the restriction of the moving contact foot 5, so that the auxiliary contact 8 on the auxiliary moving contact 6 is in contact with the auxiliary contact 8 on the auxiliary static contact 7, facilitating the user to switch between the normally closed state and the normally open state of the auxiliary contact 8 to understand the switching between the static state and the conducting state of the main load circuit part 3. If the main load circuit part 3 of the relay is disconnected after the magnetic force system of the relay is powered off and the two auxiliary contacts 8 are not in contact and conducting, it indicates that the main load circuit part 3 is not normally disconnected and there is adhesion of the contacts. At this time, the auxiliary detection part 4 feeds back a signal to forcibly cut off the current of the main load circuit part 3 to prevent the occurrence of safety accidents caused by the circuit being energized for a long time or abnormally, and to increase the safety and reliability of the relay product during use.
[0028] To facilitate the normal use of the relay, the magnetic part 2 includes a yoke 12, an iron core 13, a bobbin 14, and a coil 15. A U-shaped clamping block 35 adapted to the front side of the lower surface of the bobbin 14 is provided on the upper surface of the base 1. Coil terminals 16 are symmetrically connected to the rear side of the lower surface of the bobbin 14. An assembly groove for installing the coil terminals 16 is provided inside the base 1. The iron core 13 is fixedly installed inside the bobbin 14. A plugging groove 17 adapted to the lower end of the yoke 12 is provided on the upper surface of the base 1. An adaptation groove 18 adapted to the iron core 13 is provided inside the yoke 12. One end of the iron core 13 extends into the inside of the adaptation groove 18. The coil 15 is wound around the outside of the bobbin 14. During use, the coil 15 generates an electromagnetic effect, thereby enabling the control of the main load circuit part 3 and meeting the normal use of the relay.
[0029] Considering the need to ensure the stability of the relay during use, the main load circuit part 3 includes a moving reed 19, a static reed 20, an insulating plate 21, a moving contact 22, a static contact 23 and a mounting block 24. The upper surface of the base 1 is symmetrically provided with mounting grooves 27 for mounting the static reed 20. The insides of the two static reeds 20 are provided with contact grooves for mounting the static contacts 23. An insulating plate 21 is provided in front of the magnetic part 2. The front surface of the insulating plate 21 is provided with a positioning groove for mounting the mounting block 24. The internal thread of the mounting block 24 is connected with two fixing screws 25. The inside of the insulating plate 21 is symmetrically provided with thread grooves adapted to the fixing screws 25. The lower end of the mounting block 24 is provided with a screw thread. The connecting rod 26 is fixedly connected with the moving spring 19, and the inside of the moving spring 19 is symmetrically provided with contact grooves for installing the moving contacts 22. The two moving contacts 22 correspond to the static contacts 23 one by one. When in use, the magnetic part 2 controls the insulating plate 21 to adjust the position, thereby driving the moving spring 19 to move under the action of the connecting rod 26. In the contact and disengagement state of the two moving contacts 22 on the moving spring 19 and the static contacts 23 on the two static springs 20, the current of the main load circuit part 3 is connected and disconnected. The fixing screws 25 are provided to facilitate the connection between the mounting plate and the insulating plate 21, and to facilitate the control of the moving spring 19 by the insulating plate 21, thereby ensuring the stability of the relay when in use.
[0030] In order to facilitate the switching between the static state and the conducting state of the main load circuit part 3, a control board 28 is provided on the rear surface of the insulating plate 21. The inside of the control board 28 is symmetrically provided with threaded holes adapted to the fixing screws 25. The upper ends of both sides of the control board 28 are provided with hinge grooves 29 adapted to the front end of the yoke 12. The front end of the yoke 12 is provided with a movable groove adapted to the upper end of the control board 28. The upper surfaces of the control board 28 and the yoke 12 are fixedly connected with a clamping block 30. An auxiliary spring 31 is provided between the two clamping blocks 30. The push-pull rod 9 is away from the auxiliary spring 31. One end of the detection part 4 is fixedly connected to the outer wall of the insulating plate 21. Through the movable groove and the hinge groove 29, the control board 28 is formed into a lever shape with the front end of the yoke 12 as the fulcrum, and one end of the control board 28 is pulled by the auxiliary spring 31. Therefore, when the iron core 13 and the other end of the control board 28 are magnetically attracted and detached, the switching of the main load circuit part 3 between the static state and the conductive state can be controlled, and the push-pull rod 9 can be controlled to move. The two threaded holes on the control board 28 facilitate the fixation of the control board 28 and the insulating plate 21.
[0031] During operation, it is necessary to ensure that the position of the lower end of the insulating plate 21 is restricted, so a mounting groove 27 for installing an L-shaped positioning plate 32 is opened on the front surface of the base 1, and the front surface of the movable spring 19 is in conflict with the inner wall of the L-shaped positioning plate 32. After the installation of the insulating plate 21 and the control board 28 is completed, the L-shaped positioning plate 32 can be fixed to the base 1 through the mounting groove 27, thereby restricting the position of the lower end of the insulating plate 21, thereby preventing the auxiliary spring 31 from pulling the control board 28 to drive the bottom end of the insulating plate 21 to detach from the top of the base 1.
[0032] In addition, it is necessary to ensure the stability of the L-shaped positioning plate 32 and the static spring piece 20 when they are plugged in and fixed. Therefore, the lower surface of the L-shaped positioning plate 32 and the outer walls of the two static spring pieces 20 are symmetrically fixedly connected with stabilizing protrusions 33. The outer wall of the stabilizing protrusion 33 conflicts with the inner wall of the mounting groove 27. By setting the stabilizing protrusion 33, the friction force exerted on the L-shaped positioning plate 32 and the static spring piece 20 after being inserted into the mounting groove 27 can be increased, thereby ensuring the stability of the L-shaped positioning plate 32 and the static spring piece 20 after being inserted into the mounting groove 27, and ensuring the use effect of the L-shaped positioning plate 32 and the static spring piece 20.
[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A structural relay with auxiliary contacts (8), comprising a base (1), characterized in that: On the upper surface of the base (1), a magnetic part (2), a main load circuit part (3), and an auxiliary detection part (4) are respectively arranged. The main load circuit part (3) is arranged in front of the magnetic part (2), and the auxiliary contact (8) part is arranged on one side of the magnetic part (2). The auxiliary detection part (4) includes a moving reed foot (5), an auxiliary moving reed (6), an auxiliary static reed (7), and an auxiliary contact (8). An assembly groove for installing the moving reed foot (5) and the auxiliary static reed (7) is opened inside the base (1). Two mounting bumps (34) are fixedly connected to the upper end of the moving reed foot (5). Two mounting holes adapted to the mounting bumps (34) are opened at the upper end of the auxiliary moving reed (6). Contact grooves for installing the auxiliary contact (8) are opened at the lower ends of both the auxiliary moving reed (6) and the auxiliary static reed (7), and the two auxiliary contacts (8) correspond to each other. Among them, a push-pull rod (9) is fixedly connected to one side of the main load circuit part (3). A push-pull groove (10) is opened at one end of the push-pull rod (9) close to the auxiliary detection part (4). A control groove (11) corresponding to the push-pull groove (10) is opened on the auxiliary moving reed (6).
2. A structural relay with auxiliary contacts (8) according to claim 1, characterized in that: The magnetic part (2) includes a yoke iron (12), an iron core (13), a coil bobbin (14), and a coil (15). A U-shaped clamping block (35) adapted to the lower surface of the front side of the coil bobbin (14) is opened on the upper surface of the base (1). Coil terminals (16) are symmetrically connected to the rear side of the lower surface of the coil bobbin (14). An assembly groove for installing the coil terminals (16) is opened inside the base (1). An iron core (13) is fixedly installed inside the coil bobbin (14). A plug-in groove (17) adapted to the lower end of the yoke iron (12) is opened on the upper surface of the base (1). An adaptation groove (18) adapted to the iron core (13) is opened inside the yoke iron (12). One end of the iron core (13) extends into the adaptation groove (18). The coil (15) is wound around the outside of the coil bobbin (14).
3. A structural relay with auxiliary contacts (8) according to claim 2, characterized in that: The main load circuit part (3) comprises a moving reed (19), a stationary reed (20), an insulating plate (21), a moving contact (22), a stationary contact (23) and a mounting block (24); the upper surface of the base (1) is symmetrically provided with mounting grooves (27) for mounting the stationary reed (20); the interiors of the two stationary reeds (20) are both provided with contact grooves for mounting the stationary contacts (23); an insulating plate (21) is arranged directly in front of the magnetic part (2); the front surface of the insulating plate (21) is provided with a A positioning groove for installing a mounting block (24) is provided, the internal thread of the mounting block (24) is connected to two fixing screws (25), the interior of the insulating plate (21) is symmetrically provided with thread grooves adapted to the fixing screws (25), the lower end of the mounting block (24) is fixedly connected to a moving spring (19) via a connecting rod (26), the interior of the moving spring (19) is symmetrically provided with contact grooves for installing moving contacts (22), and the two moving contacts (22) correspond one to one with the static contacts (23).
4. A structural relay with auxiliary contacts (8) according to claim 3, characterized in that: A control plate (28) is provided on the rear surface of the insulating plate (21), and threaded holes matching the fixing screws (25) are symmetrically provided inside the control plate (28). Hinge grooves (29) matching the front end of the yoke (12) are provided on the upper ends of both sides of the control plate (28), and a movable groove matching the upper end of the control plate (28) is provided on the front end of the yoke (12). A clamping block (30) is fixedly connected to the upper surface of the control plate (28) and the yoke (12), and an auxiliary spring (31) is provided between the two clamping blocks (30). The end of the push-pull rod (9) away from the auxiliary detection part (4) is fixedly connected to the outer wall of the insulating plate (21).
5. A structural relay with auxiliary contacts (8) according to claim 3, characterized in that: The front surface of the base (1) is provided with a mounting groove (27) for mounting an L-shaped positioning plate (32), and the front surface of the movable spring (19) is in conflict with the inner wall of the L-shaped positioning plate (32).
6. A structural relay with auxiliary contacts (8) according to claim 5, characterized in that: The lower surface of the L-shaped positioning plate (32) and the outer walls of the two static spring sheets (20) are symmetrically fixedly connected with stabilizing protrusions (33), and the outer wall of the stabilizing protrusion (33) is in conflict with the inner wall of the installation groove (27).