Arc extinguishing structure of relay contact

Abstract

The utility model relates to the technical field of relays, in particular to an arc extinguishing structure of a relay contact. Comprising a shell, and solves the problems that in a relay in the prior art, a magnet yoke and the shell are generally installed in a bolt or welding mode, although the magnet yoke and the shell can be effectively and fixedly installed in the bolt mode, the installation process is time-consuming and labor-consuming, and the installation efficiency is high. However, after the magnet yoke and the shell are installed in a welding mode, it is inconvenient for a user to disassemble and replace the magnet yoke or the arc extinguishing magnetic steel, most of existing relays do not have the anti-magnetic function, when the relays are used, the magnetic field generated by the relays may coexist with magnetic fields generated by other electronic elements, and the magnetic field generated by other electronic elements may not coexist with the magnetic field generated by other electronic elements. And at the moment, the relay and other electronic elements are mutually interfered, so that the normal use effect of the relay is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to an arc extinguishing structure of relay contacts. Background Art

[0002] A relay, also known as an electric relay, is an electronic control device. It has a control system and a controlled system. It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. When using a relay, it is necessary to propose an arc extinguishing structure for the relay contacts.

[0003] At present, when installing the yoke and the shell of relays, bolts or welding are generally used. Although the yoke and the shell can be effectively fixed and installed by bolts, the installation process is time-consuming and labor-intensive, thereby reducing the installation efficiency of the yoke and the arc-extinguishing magnet. After the yoke and the shell are installed by welding, it is inconvenient for users to disassemble and replace the yoke or the arc-extinguishing magnet, thereby reducing the practicality of the relay. In addition, most of the current relays do not have anti-magnetic function. When the relay is used, the magnetic field generated by the relay may coexist with the magnetic field generated by other electronic components. At this time, it will cause interference between the relay and the other electronic components, thereby affecting the normal use of the relay. Utility Model Content

[0004] The utility model aims to provide an arc extinguishing structure of a relay contact, comprising a housing, and also comprising:

[0005] A magnetic yoke is arranged outside the shell, and a groove for clamping the magnetic yoke is opened on the outside of the shell;

[0006] Two arc-extinguishing magnetic steels are both arranged inside the groove;

[0007] A connecting plate, symmetrically arranged outside the magnetic yoke;

[0008] Fixed blocks are symmetrically arranged outside the housing, and the upper surfaces of the two fixed blocks are provided with guide grooves for the connection plates to move;

[0009] The fixing components are respectively arranged outside the two fixing blocks and used to fix the connecting plate and the fixing blocks, so as to fix the yoke and the housing;

[0010] The anti-magnetic component is arranged outside the shell and is used to enable the relay to have the function of preventing magnetic interference.

[0011] As a further improvement of the present technical solution, the fixing assembly includes mounting plates respectively arranged on the outside of the two fixing blocks, a fixing rod is provided inside the mounting plate, one end of the fixing rod extends to the outside of the mounting plate and is fixedly connected to a pull plate, a resistance plate is fixedly connected to the outside of the fixing rod, a return spring is sleeved on the outside of the fixing rod, the return spring is in contact with the resistance plate and the mounting plate, the contact surfaces of the two mounting plates and the fixing blocks are provided with guide grooves for the movement of the fixing rods, and the insides of the two connecting plates are provided with guide grooves for the movement of the fixing rods.

[0012] As a further improvement of the technical solution, the front and rear inner walls of the yoke are both provided with convex bulges.

[0013] As a further improvement of the present technical solution, the anti-magnetic component includes an isolation cover mounted on the outside of the outer shell, the outside of the isolation cover is symmetrically provided with fixing plates, the outsides of the two fixing plates are fixedly connected with plug-in plates, the outside of the outer shell is symmetrically provided with fixing frames, and the two plug-in plates are fixedly connected to the fixing frames by bolts.

[0014] As a further improvement of the present technical solution, the isolation cover is made of stainless steel.

[0015] As a further improvement of the technical solution, rubber anti-slip strips are provided at equal intervals on the outside of the isolation cover.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the arc extinguishing structure of the relay contact, by setting a fixing component and an anti-magnetic component, when it is necessary to fix the yoke and the arc extinguishing magnet to the shell, it is only necessary to first place the two arc extinguishing magnets in the grooves opened on the outside of the shell, and then insert the yoke into the grooves opened on the outside of the shell. At this time, the yoke will drive the connecting plate to move synchronously. When the connecting plate is inserted into the guide groove on the upper surface of the fixed block, the connecting plate and the fixed block are fixed by the fixing component. At this time, the yoke and the arc extinguishing magnet can be fixed to the shell. Through the setting of the anti-magnetic component, the relay can be effectively protected from magnetic interference, thereby preventing the relay and other electronic components from interfering with each other, which will cause the relay to be unable to be used normally, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the cutaway three-dimensional structure of the mounting plate in the utility model;

[0020] Figure 3This is a schematic diagram of the three-dimensional structure of the utility model after the isolation cover is disassembled;

[0021] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0022] Figure 5 for Figure 2 Schematic diagram of the enlarged structure of area B in the middle.

[0023] The meaning of each number in the figure is:

[0024] 1. Shell; 2. Yoke; 3. Connecting plate; 4. Fixing block; 5. Mounting plate; 6. Fixing frame; 7. Isolation cover; 8. Rubber anti-slip strip; 9. Arc-extinguishing magnet; 10. Groove; 11. Plug-in board; 12. Fixing plate; 13. Fixing rod; 14. Resistance plate; 15. Reset spring; 16. Bump. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1 - Figure 5 As shown, this embodiment provides an arc extinguishing structure of a relay contact, including a housing 1, and also including:

[0027] The yoke 2 is arranged outside the housing 1, and a groove 10 for clamping the yoke 2 is provided outside the housing 1;

[0028] Two arc-extinguishing magnetic steels 9 are both arranged inside the groove 10;

[0029] A connecting plate 3 is symmetrically arranged outside the yoke 2;

[0030] The fixing blocks 4 are symmetrically arranged outside the housing 1, and the upper surfaces of the two fixing blocks 4 are provided with guide grooves for the connection plates 3 to move;

[0031] The fixing components are respectively arranged outside the two fixing blocks 4 and are used to fix the connecting plate 3 and the fixing blocks 4, so that the yoke 2 and the housing 1 can be fixedly installed;

[0032] The anti-magnetic component is arranged outside the housing 1 and is used to enable the relay to have the function of preventing magnetic interference.

[0033] The above working principle: when it is necessary to fix the yoke 2 and the arc-extinguishing magnetic steel 9 to the outer shell 1, just place the two arc-extinguishing magnetic steels 9 in the groove 10 opened on the outside of the outer shell 1, and then plug the yoke 2 into the groove 10 opened on the outside of the outer shell 1. At this time, the yoke 2 will drive the connecting plate 3 to move synchronously. When the connecting plate 3 is plugged into the guide groove on the upper surface of the fixed block 4, the connecting plate 3 and the fixed block 4 are fixed by the fixing assembly. At this time, the yoke 2 and the arc-extinguishing magnetic steel 9 can be fixed to the outer shell 1. Through the setting of the anti-magnetic assembly, the relay can be effectively protected from magnetic interference, thereby preventing the relay from interfering with other electronic components, which will cause the relay to be unable to be used normally, saving time and effort.

[0034] In order to conveniently fix and install the yoke 2 and the arc-extinguishing magnetic steel 9 to the housing 1, the fixing assembly includes mounting plates 5 respectively arranged on the outside of the two fixing blocks 4, a fixing rod 13 is arranged inside the mounting plate 5, one end of the fixing rod 13 extends to the outside of the mounting plate 5 and is fixedly connected with a pull disk, the outside of the fixing rod 13 is fixedly connected with a contact plate 14, the outside of the fixing rod 13 is sleeved with a reset spring 15, the reset spring 15 is in contact between the reset plate 14 and the mounting plate 5, the contact surfaces of the two mounting plates 5 and the fixing blocks 4 are provided with guide grooves for the fixing rod 13 to move, and the insides of the two connecting plates 3 are provided with guide grooves for the fixing rod 13 to move. When it is necessary to fix and install the yoke 2 and the arc-extinguishing magnetic steel 9 to the housing 1, it is only necessary to pull the pull disk first. Move the pull plate, and the pull plate will drive the fixed rod 13 to move synchronously, and the fixed rod 13 will drive the contact plate 14 to move synchronously. During the movement of the contact plate 14, the reset spring 15 will be squeezed. At this time, the two arc-extinguishing magnetic steels 9 are placed in the groove 10, and then the yoke 2 is inserted into the groove 10. During the movement of the yoke 2, the connecting plate 3 will be driven to move synchronously. When the connecting plate 3 is inserted into the guide groove on the upper surface of the fixed block 4, the pull plate is released. At this time, the reset spring 15 is reset, driving the fixed rod 13 to move synchronously. When the fixed rod 13 is inserted into the guide groove inside the connecting plate 3, the connecting plate 3 and the fixed block 4 can be fixed. At this time, the yoke 2 and the arc-extinguishing magnetic steel 9 can be fixedly installed with the outer shell 1.

[0035] Considering that after the arc extinguishing magnetic steel 9 is placed in the groove 10, it is necessary to limit the arc extinguishing magnetic steel 9 to prevent the arc extinguishing magnetic steel 9 from being displaced in the groove 10, the front and rear inner walls of the yoke 2 are provided with convex bulges 16. Through the setting of the convex bulge 16, the arc extinguishing magnetic steel 9 can be effectively limited to prevent the arc extinguishing magnetic steel 9 from being displaced in the groove 10, which affects the normal use of the relay as a whole.

[0036] In order to effectively install the isolation cover 7 so that the isolation cover 7 can effectively provide anti-magnetic protection for the relay, the anti-magnetic component includes an isolation cover 7 mounted on the outside of the shell 1, and the outside of the isolation cover 7 is symmetrically provided with fixing plates 12, and the outsides of the two fixing plates 12 are fixedly connected with plug-in boards 11, and the outside of the shell 1 is symmetrically provided with fixing frames 6, and the two plug-in boards 11 are fixedly connected to the fixing frames 6 by bolts. When the isolation cover 7 needs to be installed, it is only necessary to mount the isolation cover 7 on the outside of the shell 1 first. At this time, the isolation cover 7 will drive the fixing plates 12 to move synchronously, and the fixing plates 12 will drive the plug-in boards 11 to move synchronously. When the plug-in board 11 is plugged into the inside of the fixing frame 6, the fixing frame 6 and the plug-in board 11 are fixed by bolts. At this time, the isolation cover 7 can be fixedly installed to the outside of the shell 1, so that the isolation cover 7 can effectively provide anti-magnetic protection for the relay.

[0037] In order to effectively protect the relay from magnetic field, the material of the isolation cover 7 is stainless steel. Stainless steel has good non-magnetic conductivity, so the isolation cover 7 also has good non-magnetic conductivity. At this time, the isolation cover 7 can be used to effectively protect the relay from magnetic field.

[0038] In addition, in order to prevent the user from slipping when installing or removing the isolation cover 7, rubber anti-slip strips 8 are provided at equal intervals on the outside of the isolation cover 7. The provision of the rubber anti-slip strips 8 can, on the one hand, effectively prevent the user from slipping when installing or removing the isolation cover 7, and on the other hand, effectively improve the wear resistance of the isolation cover 7, and at the same time effectively protect the isolation cover 7, thereby extending the service life of the isolation cover 7.

[0039] 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. An arc extinguishing structure for relay contacts, comprising a housing (1), characterized in that: Also includes: A magnetic yoke (2) is arranged outside the housing (1), and a groove (10) for clamping the magnetic yoke (2) is provided on the outside of the housing (1); Two arc-extinguishing magnetic steels (9) are both arranged inside the groove (10); A connecting plate (3) symmetrically arranged outside the magnetic yoke (2); Fixed blocks (4) are symmetrically arranged outside the housing (1), and the upper surfaces of the two fixed blocks (4) are both provided with guide grooves for the connection plate (3) to move; A fixing assembly is respectively arranged outside the two fixing blocks (4) and is used to fix the connecting plate (3) and the fixing block (4), so that the yoke (2) and the housing (1) can be fixedly installed; The anti-magnetic component is arranged outside the housing (1) and is used to enable the relay to have the function of preventing magnetic interference.

2. The arc extinguishing structure of a relay contact according to claim 1, characterized in that: The fixing assembly comprises mounting plates (5) respectively arranged on the outside of the two fixing blocks (4); a fixing rod (13) is arranged inside the mounting plate (5); one end of the fixing rod (13) extends to the outside of the mounting plate (5) and is fixedly connected to a pull plate; a resistance plate (14) is fixedly connected to the outside of the fixing rod (13); a return spring (15) is sleeved on the outside of the fixing rod (13); the return spring (15) is in contact between the return plate (14) and the mounting plate (5); the contact surfaces of the two mounting plates (5) and the fixing blocks (4) are provided with guide grooves for the fixing rod (13) to move; and the insides of the two connecting plates (3) are provided with guide grooves for the fixing rod (13) to move.

3. The arc extinguishing structure of a relay contact according to claim 1, characterized in that: The front and rear inner walls of the magnetic yoke (2) are both provided with convex bulges (16).

4. The arc extinguishing structure of a relay contact according to claim 1, characterized in that: The anti-magnetic component comprises an isolation cover (7) sleeved on the outside of the housing (1), the outside of the isolation cover (7) is symmetrically provided with fixing plates (12), the outsides of the two fixing plates (12) are fixedly connected with plug-in plates (11), the outside of the housing (1) is symmetrically provided with fixing frames (6), and the two plug-in plates (11) are fixedly connected to the fixing frames (6) by bolts.

5. The arc extinguishing structure of a relay contact according to claim 4, characterized in that: The material of the isolation cover (7) is stainless steel.

6. The arc extinguishing structure of a relay contact according to claim 4, characterized in that: Rubber anti-slip strips (8) are arranged at equal intervals on the outside of the isolation cover (7).

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