Automobile relay capable of improving contact reliability of contacts

Abstract

The utility model discloses an automobile relay for improving contact reliability of contacts, which comprises a framework, a pin wire and a coil, the pin wire is integrated at the bottom of the framework, one side of the framework is fixedly connected with a static spring fixing plate, and the framework and the outer surface wall of the static spring fixing plate are fixedly connected with a shell. According to the invention, the main static reed and the auxiliary static reed are respectively corresponding to the two branches, and the two movable contacts on the movable reed are respectively contacted with the two groups of static contacts, so that the two movable contacts and the two static contacts are arranged, when one group is polluted by foreign matters and cannot work, the conduction can be completed by the other loop, and the reliability is improved. And meanwhile, the static spring fixing plate independently isolates the space of the terminal pin, and dirt generated by the terminal pin in the tin soldering process cannot escape to pollute the contact, so that the influence of foreign matters generated in the installation process and the use process on the work of the contact is reduced, and the contact reliability of the contact is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile relays, in particular to an automobile relay capable of improving contact reliability of contacts. Background Art

[0002] Modern automotive relays are usually composed of a magnetic circuit system and a contact system. The magnetic circuit system consists of a coil, a yoke, an iron core and an armature. When the coil is energized, the iron core has a certain magnetism, which drives the armature to rotate, closing the reed and contacts of the contact system and allowing the circuit loop controlled by the relay to be conductive.

[0003] Chinese patent announcement number CN216353990U, publication time 20220419, discloses an automotive relay, including a base, an iron core, an armature, a yoke, a moving reed, a static reed lead-out pin, a coil frame, a coil and a coil lead-out pin, the coil is wound on the coil frame, the iron core is inserted into the coil frame, the yoke is arranged on the base, the armature is arranged on the moving reed, the moving reed is provided with a moving contact, the static reed lead-out pin is provided with a static contact, the coil lead-out pin includes a plug body, a lead connecting pin extending from the end of the plug body, the lead connecting pin has a notch for winding the coil, a connecting block is provided at the end of the coil frame, and the connecting block is provided with a positioning cavity for inserting the lead connecting pin.

[0004] During the installation or subsequent use of the above-mentioned existing relays, foreign objects will inevitably invade. When there are foreign objects on the contacts, the relay may not work and thus be unable to output signals, thereby causing some functions of the vehicle to be limited or fail, bringing serious safety hazards. Therefore, it is urgent to propose corresponding automotive relays that improve the reliability of contact to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above problems and proposes an automobile relay which improves the contact reliability of contacts.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automotive relay for improving contact reliability comprises a skeleton, a pin line and a coil, wherein the pin line is integrated at the bottom of the skeleton, a static spring fixing plate is fixedly connected to one side of the skeleton, and a shell is fixedly connected to the outer wall of the skeleton and the static spring fixing plate, a main static spring piece and an auxiliary static spring piece are fixedly connected to the outer wall of the static spring fixing plate, static contacts are fixedly connected to the tops of the main static spring piece and the auxiliary static spring piece, a moving spring piece is fixedly connected to the top of the skeleton, and two groups of moving contacts corresponding to and matching the two groups of static contacts are arranged on the outer wall of the moving spring piece.

[0008] Preferably, a protrusion is integrally formed on the top of the static spring fixing plate, and the protrusion is located between the main static spring piece and the auxiliary static spring piece.

[0009] Preferably, the inner surface wall of the protrusion is connected with a stop plate through a groove, and the stop plate is in an L-shaped structure.

[0010] Preferably, the movable spring sheet is provided with two groups of forks, and the two groups of movable contacts are respectively fixedly connected to the two groups of forks.

[0011] Preferably, the main static spring piece and the auxiliary static spring piece are both integrally formed with plug blocks, and the two groups of the plug blocks are fixedly connected to the static spring fixing plate through two groups of blind holes respectively.

[0012] Preferably, two groups of U-shaped grooves are provided on one side of the static spring fixing plate close to the frame, and the two groups of U-shaped grooves are symmetrically distributed.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the present application, two forks are arranged on the moving spring piece, which are respectively combined with two moving contacts, and static contacts are integrated on the top of the main static spring piece and the auxiliary static spring piece. When the relay is working, the main static spring piece and the auxiliary static spring piece correspond to the two forks respectively, and the two moving contacts on the moving spring are in contact with the two groups of static contacts respectively. By setting two moving contacts and two static contacts, when one group is contaminated by foreign matter and cannot work, the other circuit can complete the conduction, thereby improving the reliability. At the same time, the static spring fixing plate isolates the space of the lead pin separately, and the dirt generated by the lead pin during the soldering process will not escape and pollute the contact, thereby reducing the influence of foreign matter generated during the installation process and use process on the contact work, thereby improving the reliability of the contact.

[0015] 2. In the present application, the protrusion arranged on the top of the static spring fixing plate is located between the main static spring piece and the auxiliary static spring piece, which can avoid the contact between the main static spring piece and the auxiliary static spring piece. At the same time, the stop piece connected to the protrusion through the groove can be used to limit the starting position of the dynamic spring piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0017] Figure 2 A schematic diagram of the structure of a stopper provided according to an embodiment of the utility model is shown;

[0018] Figure 3 A schematic diagram of a U-shaped groove structure provided according to an embodiment of the utility model is shown;

[0019] Figure 4 A schematic diagram of a housing structure provided according to an embodiment of the utility model is shown.

[0020] Legend:

[0021] 1. Frame; 2. Shell; 3. Pin line; 4. Moving contact; 5. Moving spring; 6. Coil; 7. Static spring fixing plate; 8. Protrusion; 9. Groove; 10. Stop plate; 11. Main static spring; 12. Static contact; 13. Insert block; 14. Auxiliary static spring; 15. U-shaped groove. DETAILED DESCRIPTION

[0022] 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 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.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] An automotive relay for improving contact reliability comprises a frame 1, a pin line 3 and a coil 6, wherein the pin line 3 is integrated at the bottom of the frame 1, a static spring fixing plate 7 is fixedly connected to one side of the frame 1, and a housing 2 is fixedly connected to the outer wall of the frame 1 and the static spring fixing plate 7, a main static spring piece 11 and an auxiliary static spring piece 14 are fixedly connected to the outer wall of the static spring fixing plate 7, and static contacts 12 are fixedly connected to the top of the main static spring piece 11 and the auxiliary static spring piece 14, a moving spring piece 5 is fixedly connected to the top of the frame 1, and two groups of moving contacts 4 corresponding to and matching the two groups of static contacts 12 are arranged on the outer wall of the moving spring piece 5;

[0025] Two forks are arranged on the moving reed 5, which are respectively combined with two moving contacts 4, and the main static reed 11 and the auxiliary static reed 14 are integrated with static contacts 12 on the top. When the relay is working, the main static reed 11 and the auxiliary static reed 14 correspond to the two forks respectively, and the two moving contacts 4 on the moving reed 5 are respectively in contact with two groups of static contacts 12. By setting two moving contacts 4 and two static contacts 12, when one group is contaminated by foreign matter and cannot work, the other circuit can complete the conduction, thereby improving the reliability. At the same time, the static spring fixing plate 1 isolates the space of the lead pin 3 separately, and the dirt generated by the lead pin 3 during the soldering process will not escape and pollute the contact, thereby reducing the influence of foreign matter generated during the installation process and the use process on the contact work, thereby improving the reliability of the contact.

[0026] The working mechanism of the relay is as follows: when a certain voltage or current is applied to both ends of the relay coil, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, yoke, armature, and magnetic circuit working air gap. Under the action of the magnetic field, the armature is attracted to the iron core and the surface, thereby pushing the normally closed contacts to open and the normally open contacts to close; when the voltage or current at both ends of the coil is less than a certain value and the mechanical reaction force is greater than the electromagnetic attraction, the armature returns to its initial state, the normally open contacts open, and the normally closed contacts connect.

[0027] Specifically, Figure 2 and Figure 4 As shown, a protrusion 8 is integrally formed on the top of the static spring fixing plate 7, and the protrusion 8 is located between the main static spring piece 11 and the auxiliary static spring piece 14. The inner surface wall of the protrusion 8 is connected with a stop plate 10 through a groove 9, and the stop plate 10 is L-shaped. The protrusion 8 arranged on the top of the static spring fixing plate 7 is located between the main static spring piece 11 and the auxiliary static spring piece 14, which can avoid the contact between the main static spring piece 11 and the auxiliary static spring piece 14. At the same time, the stop plate 10 connected by the protrusion through the groove 9 can be used to limit the starting position of the dynamic spring piece 5.

[0028] Specifically, Figure 2 and Figure 3 As shown, the moving spring piece 5 is provided with two groups of forks, and the two groups of moving contacts 4 are respectively fixedly connected to the two groups of forks, which ensures the structural strength of the moving spring piece 5. At the same time, the two groups of moving contacts 4 can stably cooperate with the two groups of static contacts 12. The main static spring piece 11 and the auxiliary static spring piece 14 are both integrally formed with plug blocks 13, and the two groups of plug blocks 13 are respectively fixedly connected to the static spring fixing plate 7 through two groups of blind holes. The pin wire 3 is also fixed to the skeleton 1 through the blind hole, so as to prevent the pin wire and the main static spring piece 11 and the auxiliary static spring piece 14 from falling out during the insertion of powder chips. Two groups of U-shaped grooves 15 are provided on the side of the static spring fixing plate 7 close to the skeleton 1, and the two groups of U-shaped grooves 15 are symmetrically distributed. The U-shaped groove 15 can completely isolate the space where the lead pin 3 is located and the space at the contact, so that the dirt generated by the lead pin 3 during the soldering process will not escape and pollute the contact.

[0029] Working principle: Two forks are set on the moving reed 5, which are respectively combined with two moving contacts 4, and the main static reed 11 and the auxiliary static reed 14 are integrated with static contacts 12 on the top. When the relay is working, the main static reed 11 and the auxiliary static reed 14 correspond to the two forks respectively, and the two moving contacts 4 on the moving reed 5 are in contact with the two groups of static contacts 12 respectively. By setting two moving contacts 4 and two static contacts 12, when one group is contaminated by foreign matter and cannot work, the other circuit can complete the conduction, which improves the reliability. At the same time, the static reed The fixing plate 1 isolates the space of the lead pin 3 separately, and the dirt generated by the lead pin 3 during the soldering process will not escape and pollute the contact, thereby reducing the influence of foreign matter generated during the installation process and use process on the contact operation, thereby improving the reliability of the contact. The protrusion 8 arranged on the top of the static spring fixing plate 7 is located between the main static spring piece 11 and the auxiliary static spring piece 14, which can avoid the contact between the main static spring piece 11 and the auxiliary static spring piece 14. At the same time, the stop piece 10 connected by the protrusion through the groove 9 can be used to limit the starting position of the moving spring piece 5.

[0030] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automotive relay for improving contact reliability, comprising a frame (1), a lead wire (3) and a coil (6), wherein the lead wire (3) is integrated at the bottom of the frame (1), and characterized in that: A static spring fixing plate (7) is fixedly connected to one side of the skeleton (1), and a housing (2) is fixedly connected to the outer wall of the skeleton (1) and the static spring fixing plate (7), a main static spring piece (11) and an auxiliary static spring piece (14) are fixedly connected to the outer wall of the static spring fixing plate (7), and static contacts (12) are fixedly connected to the tops of the main static spring piece (11) and the auxiliary static spring piece (14), and a dynamic spring piece (5) is fixedly connected to the top of the skeleton (1), and two groups of dynamic contacts (4) corresponding to and matching the two groups of static contacts (12) are arranged on the outer wall of the dynamic spring piece (5).

2. An automotive relay for improving contact reliability according to claim 1, characterized in that: A protrusion (8) is integrally formed on the top of the static spring fixing plate (7), and the protrusion (8) is located between the main static spring piece (11) and the auxiliary static spring piece (14).

3. The automotive relay for improving contact reliability according to claim 2, characterized in that: The inner surface wall of the protrusion (8) is snap-connected with a stop plate (10) via a groove (9), and the stop plate (10) is in an L-shaped structure.

4. The automotive relay for improving contact reliability according to claim 3, characterized in that: The movable spring piece (5) is provided with two groups of forks, and the two groups of movable contacts (4) are respectively fixedly connected to the two groups of forks.

5. The automotive relay for improving contact reliability according to claim 4, characterized in that: The main static spring piece (11) and the auxiliary static spring piece (14) are both integrally formed with an insert block (13), and two groups of the insert blocks (13) are fixedly connected to the static spring fixing plate (7) through two groups of blind holes respectively.

6. The automotive relay for improving contact reliability according to claim 5, characterized in that: Two groups of U-shaped grooves (15) are provided on one side of the static spring fixing plate (7) close to the frame (1), and the two groups of U-shaped grooves (15) are symmetrically distributed.

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