CN113394054B

CN113394054B - Relay

Info

Publication number: CN113394054B
Application number: CN202110699573.8A
Authority: CN
Inventors: 章佳; 陈雷波; 褚慧娜
Original assignee: Ningbo Lishun Relay Co ltd
Current assignee: Ningbo Lishun Relay Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-09-06
Anticipated expiration: 2041-06-23
Also published as: CN113394054A

Abstract

The utility model belongs to the technical field of the electric control device and specifically relates to a relay is related to, it includes the relay body, the relay body includes the base, installs switching reed, first reed, second reed on the base, is used for making switching reed and the adsorbed adsorption structure of second reed and is used for making switching reed and the adsorbed helping hand structure of first reed, the switching reed includes the switching piece, the switching piece is the arc setting. The application has the effect of reducing the arc discharge phenomenon when the armature and the movable contact are adsorbed.

Description

Relay

Technical Field

The application relates to the field of electric control devices, in particular to a relay.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount meets a predetermined requirement. It has an interactive relationship between the control system and the controlled system. It is usually applied to automatic control circuit, and it is an "automatic switch" which uses small current to control large current operation, so that it can play the role of automatic regulation, safety protection and switching circuit in the circuit.

The electromagnetic relay is one of the relays, the main components of the electromagnetic relay are an electromagnet, an armature, a spring, a movable contact and a static contact, and current generates a magnetic field through a coil of the electromagnet, so that attraction is generated on the armature, the movable contact and the static contact are closed, and a working circuit is closed; when the current in the coil disappears, the armature separates the movable contact from the fixed contact under the action of the spring, and the working circuit is disconnected.

Aiming at the related technologies, the inventor thinks that the defects exist that after the armature is used for a period of time, the adsorption process of the armature and the movable contact has a delayed phenomenon, so that an arc phenomenon is caused, electric sparks are easy to generate, and potential safety hazards exist.

Disclosure of Invention

In order to reduce the phenomenon of arc discharge when armature and movable contact adsorb, the application provides a relay.

The application provides a relay adopts following technical scheme:

the utility model provides a relay, includes the relay body, the relay body includes the base, installs switching reed, first reed, second reed on the base, is used for making switching reed and the adsorbed adsorption structure of second reed and is used for making switching reed and the adsorbed helping hand structure of first reed, the switching reed includes the switching piece, the switching piece is the arc setting.

Through adopting above-mentioned technical scheme, adsorption structure is used for producing magnetic field, make the switching reed switch to the state of adsorbing with the second reed from the state of adsorbing with first reed, the switching piece is the arc setting, when the switching piece switches the adsorption state, self holds the power earlier, when the switching piece is buckled the horizontality, will exert oneself in the twinkling of an eye and release, the actuation that the switching piece can be quick reduces the phenomenon that draws the arc to appear, and then reduce the inside electric spark that produces of relay body, with the life of extension relay body, the existence of potential safety hazard has been reduced.

Preferably, the radian of the switching piece is a minor arc.

By adopting the technical scheme, the arrangement of the minor arc is more favorable for the major arc and the semi-circular arc, so that the space occupied by the switching piece is small, and the time of switching action is short.

Preferably, a gap for limiting the switching piece is provided on the base.

Through adopting above-mentioned technical scheme, the setting of clearance to the moving range of restriction switch piece.

Preferably, a limiting structure is arranged on the base and comprises a first limiting rod and a second limiting rod, the gap is formed between the first limiting rod and the second limiting rod, and the switching piece penetrates through the gap.

By adopting the technical scheme, the switching piece can move between the first limiting rod and the second limiting rod so as to achieve the purpose of limiting the movement of the switching piece.

Preferably, the switching reed further comprises an installation piece, and the installation piece is rotatably connected with the switching piece.

Through adopting above-mentioned technical scheme, the installation piece is used for the installation connection piece on the base, and the installation piece rotates with the connection piece to be connected, reduces the phenomenon appearance that the junction of connecting plate and installation piece caused the harm because buckle repeatedly.

Preferably, the boosting structure is a volute spring, a rotating shaft is fixedly arranged on the mounting plate in a penetrating mode, the connecting plate is rotatably connected with the rotating shaft, the boosting structure is sleeved on the rotating shaft, and two ends of the boosting structure are fixedly connected with the rotating shaft and the connecting plate respectively.

By adopting the technical scheme, the arrangement of the volute spiral spring is used for keeping the switching piece pressed on the first reed, so that the connection between the switching piece and the first reed is stable.

Preferably, a locking assembly used for adjusting the tightness of the power assisting structure is arranged on the rotating shaft.

Through adopting above-mentioned technical scheme, locking Assembly is used for reducing the not hard up phenomenon of helping hand structure appearance, and then reduces the unstable phenomenon of being connected of appearing between switching piece and the first reed and takes place.

Preferably, the locking component comprises a worm wheel and a worm, the worm wheel is sleeved on the rotating shaft, the worm wheel is rotatably connected with the rotating shaft, the worm is meshed with the worm wheel, the worm is rotatably arranged, and the worm is meshed with the worm wheel.

Through adopting above-mentioned technical scheme, the worm can drive the worm wheel and rotate, and the worm wheel can not drive the worm and rotate to reduce the not hard up phenomenon of volute spiral spring appearance, rotate the worm and make the worm wheel remove, can adjust volute spiral spring's elasticity.

Preferably, the end part of the switching piece, which deviates from the mounting piece, is provided with an extension plate, a first contact is embedded in the extension plate, the top end of the first contact is higher than the upper surface of the extension plate, and the bottom end of the first contact is lower than the lower surface of the extension plate.

Through adopting above-mentioned technical scheme, the setting of extension plate for installation contact one, the both ends of contact one all protrude the extension plate, so that be connected with first reed and second reed.

Preferably, the first reed is provided with a second contact corresponding to the first contact, and the second reed is provided with a third contact corresponding to the first contact.

By adopting the technical scheme, the second contact can be attracted with the first contact, and the third contact can also be attracted with the first contact, so that the connection between the switching piece and the first reed and the second reed is relatively stable.

Drawings

Fig. 1 is an exploded schematic diagram of a relay according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a base, a frame, a first spring, and a second spring in a relay according to an embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional structure diagram of a relay according to an embodiment of the present application.

Reference numerals: 1. a housing; 2. a base; 20. a base plate; 200. a boss; 201. connecting pins; 202. a hole of abdication; 21. a framework; 22. assembling a first plate; 220. mounting a bump; 23. a second assembling plate; 24. a limiting structure; 240. a first limiting rod; 241. a second limiting rod; 242. a gap; 25. a mounting structure; 250. a first mounting part; 251. a second mounting part; 26. a first mounting groove; 27. a second mounting groove; 28. a third mounting groove; 29. a fourth mounting groove; 3. an adsorption structure; 30. a coil; 31. an iron core; 4. a booster structure; 5. switching the reed; 50. mounting a sheet; 500. mounting holes; 501. a lead sheet; 51. a switching sheet; 510. an extension plate; 511. a first contact; 512. an adsorption sheet; 52. a rotating shaft; 6. a first reed; 60. a foot guide plate I; 61. a first mounting plate; 62. a second contact; 7. a second reed; 70. a second pin plate; 71. a second mounting plate; 72. a contact point III; 8. a locking assembly; 80. a worm gear; 81. a worm; 810. a rotating handle.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a relay. Referring to fig. 1, the relay comprises a relay body, the relay body comprises a shell 1, a base 2, an adsorption structure 3, a power assisting structure 4, a switching reed 5, a first reed 6 and a second reed 7, the adsorption structure is installed on the base 2, the relay body is in a closed state when the switching reed 5 is adsorbed by the first reed 6, and the relay body is in an open state when the switching reed 5 is adsorbed by the second reed 7. The servo mechanism 4 is for attracting the switching reed 5 to the first reed 6, and the attraction mechanism 3 is for switching the switching reed 5 to the second reed 7.

Referring to fig. 1 and 2, the base 2 includes a bottom plate 20 and a framework 21 disposed on the bottom plate 20, the housing 1 covers the bottom plate 20 and the framework 21, a boss 200 is disposed on the base 2, the housing 1 is connected with the boss 200 in a clamping manner, and the framework 21 is disposed on the boss 200. Two connecting pins 201 are embedded on the boss 200, and the connecting pins 201 are arranged in a rod-shaped structure with a circular cross section. The adsorption structure 3 comprises a coil 30 and an iron core 31, wherein the coil 30 is wound outside the iron core 31, the iron core 31 is fixed on the boss 200, two ends of the coil 30 are respectively wound on the two connecting pins 201 to enable the connecting pins 201 to be communicated with the coil 30, the connecting pins 201 are respectively connected with the positive pole and the negative pole of a power supply to enable the coil 30 to be electrified, and the coil 30 is electrified to enable the iron core 31 to have magnetism.

Referring to fig. 1 and 2, the framework 21 includes a first assembly plate 22 and a second assembly plate 23 which are integrally arranged, the first assembly plate 22 is vertically fixed on the boss 200, the second assembly plate 23 is perpendicular to the first assembly plate 22, an installation bump 220 for installing the switching reed 5 is arranged on the first assembly plate 22, and the installation bump 220 is arranged in a cylindrical structure.

Referring to fig. 1, the switching reed 5 includes a mounting piece 50 and a switching piece 51, the mounting piece 50 and the switching piece 51 are both made of conductive metal material, such as copper, and the switching piece 51 is rotatably connected to the mounting piece 50 through a rotating shaft 52. The mounting hole 500 has been seted up on the installation piece 50, the vertical setting of installation piece 50, and mounting hole 500 pegs graft with installation lug 220 to make installation piece 50 install on assembly plate 22, the welding has pin piece 501 on the mounting panel, has seted up the hole of stepping down 202 on the base 2, and pin piece 501 passes the hole of stepping down 202 in order to run through base 2.

Referring to fig. 1, the switch piece 51 is disposed above the second mounting plate 23, the switch piece 51 is an arc-shaped piece, the arc of the switch piece 51 is a minor arc, and when the switch piece 51 is attracted to the first reed 6, the upper surface of the switch piece 51 is convex and the lower surface of the switch piece 51 is concave. When the switch piece 51 is attracted to the second reed 7, the upper surface of the switch piece 51 is concave, and the lower surface of the switch piece 51 is convex. The switching piece 51 has a suction piece 512 provided on the lower surface thereof, and the suction piece 512 and the core 31 can be sucked when the coil 30 and the core 31 have a magnetic field generated.

Referring to fig. 1, the boosting structure 4 is configured as a volute spring, the boosting structure 4 is sleeved on the rotating shaft 52, the rotating shaft 52 is fixedly connected with the mounting plate 50, the switching plate 51 is rotatably connected with the rotating shaft 52, one end of the boosting structure 4 is fixedly connected with the rotating shaft 52, and the other end of the boosting structure is welded with the switching plate 51. The stopper structure 24 is used to keep the switch piece 51 connected to the first spring 6.

The second assembly plate 23 is provided with a limiting structure 24 and a mounting structure 25, and the limiting structure 24 is used for limiting the position of the switching reed 5. The mounting structure 25 comprises a first mounting part 250 and a second mounting part 251, the first mounting part 250 and the second mounting part 251 are both fixed on the upper surface of the first assembly plate 22, the first mounting part 250 and the second mounting part 251 are both bonded with the second assembly plate 23, the limiting structure 24 comprises a first limiting rod 240 and a second limiting rod 241, the first limiting rod 240 and the second limiting rod 241 are arranged in parallel, a gap 242 is formed between the first limiting rod 240 and the second limiting rod 241, and the first limiting rod 240 and the second limiting rod 241 are arranged between the first mounting part 250 and the second mounting part 251 and are bonded with the first mounting part 250 and the second mounting part 251.

Referring to fig. 3, one end of the switching piece 51, which is away from the end connected with the mounting piece 50, penetrates through between the first limiting rod 240 and the second limiting rod 241, the end is provided with an extension plate 510, the extension plate 510 is horizontally arranged, a first contact 511 is embedded in the extension plate 510, the first contact 511 is arranged in a cylindrical structure, the upper surface of the first contact 511 is higher than the upper surface of the extension plate 510, and the lower surface of the second contact 62 is lower than the lower surface of the extension plate 510.

Referring to fig. 2, first reed 6 includes first pin plate 60 and first mounting plate 61, first pin plate 60 is vertically fixed to first mounting plate 61, first mounting groove 26 is formed in base 2, first pin plate 60 is inserted into first mounting groove 26, second reed 7 includes second pin plate 70 and second mounting plate 71, second pin plate 70 is vertically fixed to second mounting plate 71, second mounting groove 27 is formed in base 2, second pin plate 70 is inserted into second mounting groove 27, and second pin plate 70 extends out of second mounting groove 27, so that first reed 6 and second reed 7 are mounted on base 2.

Referring to fig. 2, a third mounting groove 28 is formed in the second mounting plate 23, the first mounting plate 61 is inserted into the third mounting groove 28, a fourth mounting groove 29 is formed in the second mounting plate 23 and the second mounting portion 251, and the second mounting plate 71 is inserted into the fourth mounting groove 29 to further fix the first spring 6 and the second spring 7 on the base 2. Inlay on the mounting panel one 61 and be equipped with two contacts 62, two contacts 62 set up to cylindrical structure, and mounting panel one 61 is all stretched out at two 62's both ends of contact, inlays on mounting panel two 71 and is equipped with three contacts 72, and three contacts 72 also set up to cylindrical structure, and two 71 of mounting panel are stretched out at three 72's both ends of contact.

Referring to fig. 1, a self-locking structure is arranged on the rotating shaft 52 and used for limiting the rotation of the rotating shaft 52 so as to reduce the looseness of the boosting structure 4, the self-locking structure comprises a worm 81 and a worm wheel 80, the worm wheel 80 is sleeved on the rotating shaft 52, the worm wheel 80 is rotatably connected with the rotating shaft 52, the worm 81 is rotatably connected with the shell 1, the worm 81 is meshed with the worm wheel 80, one end of the worm 81 penetrates out of the shell 1, a rotating handle 810 is fixedly arranged at the end of the worm 81, and one end of the boosting structure 4 is fixed to the worm wheel 80. Turning the stem 810 causes the worm 81 to turn, which in turn drives the worm gear 80 to turn, to adjust the tightness of the booster structure 4.

The implementation principle of the relay in the embodiment of the application is as follows: the switch piece 51 is adsorbed with the second contact 62, the relay body is closed at the moment, when the coil 30 is electrified and the adsorption structure 3 generates a magnetic field, the switch piece 51 is adsorbed with the third contact 72, the relay body is in an open state at the moment, the switch piece 51 is an arc piece, the state can be instantly switched, and the phenomenon of arc discharge is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A relay, characterized by: the relay comprises a relay body, wherein the relay body comprises a base (2), a switching reed (5), a first reed (6), a second reed (7), an adsorption structure (3) and a power assisting structure (4), the switching reed (5) is installed on the base (2), the adsorption structure is used for enabling the switching reed (5) and the second reed (7) to be adsorbed, the power assisting structure is used for enabling the switching reed (5) and the first reed (6) to be adsorbed, the switching reed (5) comprises a switching piece (51), and the switching piece (51) is arranged in an arc shape;

the switching reed (5) further comprises an installation sheet (50), and the installation sheet (50) is rotatably connected with the switching sheet (51);

helping hand structure (4) set up to volute spiral spring, and fixed wear to be equipped with pivot (52) on installation piece (50), switching piece (51) rotate with pivot (52) and are connected, helping hand structure (4) cover is established on pivot (52), the both ends of helping hand structure (4) respectively with pivot (52), switching piece (51) fixed connection.

2. The relay according to claim 1, characterized in that: the radian of the switching piece (51) is a minor arc.

3. The relay according to claim 1, characterized in that: a gap (242) for limiting the switching piece (51) is arranged on the base (2).

4. The relay according to claim 3, characterized in that: the switch plate is characterized in that a limiting structure (24) is arranged on the base (2), the limiting structure (24) comprises a first limiting rod (240) and a second limiting rod (241), the gap (242) is formed between the first limiting rod (240) and the second limiting rod (241), and the switch plate (51) penetrates through the gap (242).

5. The relay according to claim 1, characterized in that: and a locking assembly (8) for adjusting the tightness of the power assisting structure (4) is arranged on the rotating shaft (52).

6. The relay according to claim 5, wherein: locking Assembly (8) include worm wheel (80) and worm (81), worm wheel (80) cover is established on pivot (52), worm wheel (80) rotate with pivot (52) and are connected, worm (81) rotate and set up, worm (81) and worm wheel (80) meshing.

7. The relay according to claim 1, characterized in that: the end part of the switching piece (51) departing from the installation piece (50) is provided with an extension plate (510), a first contact (511) is embedded in the extension plate (510), the top end of the first contact (511) is higher than the upper surface of the extension plate (510), and the bottom end of the first contact (511) is lower than the lower surface of the extension plate (510).

8. The relay according to claim 7, wherein: the first reed (6) is provided with a second contact (62) corresponding to the first contact (511), and the second reed (7) is provided with a third contact (72) corresponding to the first contact (511).