Armature structure of low-heating electromagnetic relay

Abstract

The utility model discloses an armature structure of a low-heating electromagnetic relay. The armature structure comprises an armature sheet which forms a lever structure by taking a yoke as a supporting point, the first end of the armature sheet is provided with a movable contact spring and a conductive sheet in a laminated manner, the end parts of the movable contact spring and the conductive sheet are fixedly provided with movable contacts, and the conductive sheet is electrically connected with the first lug plate through a lead to form a conduction circuit; the second end of the armature sheet is provided with an elastic member. According to the utility model, a new armature structure is adopted, and when current conduction is carried out, the arrangement and contact mode of the conducting strip and the movable contact spring is optimized, so that the current density of the movable contact spring is effectively reduced, and the heating phenomenon and the internal temperature rise during working are reduced; the working load of the movable contact spring is reduced by introducing the elastic piece, more uniform and stable stress distribution is provided, fatigue damage of the relay in switching action is reduced, and the long-term working stability of the relay is improved; and comprehensively, the electric service life of the relay can be obviously prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field, concretely relates to a low heat electromagnetic relay armature structure. BACKGROUND

[0002] Relay is a common and widely used in electrical control field switching device, its structure generally by electromagnet and a group of contact point composition. The operation principle of relay is based on electromagnetic induction, when electromagnet is electrified, will produce magnetic field in its coil, this magnetic field will attract the contact point connected to close, thereby realizing the conduction of current, on the contrary, when electromagnet is de-energized, the contact point will open due to the disappearance of magnetic field, and the current cannot continue to flow. Therefore, relay can switch on and off the large current by controlling the small current, bear the switching, protection and regulation function of circuit in automatic control system.

[0003] For the clapping type electromagnetic relay, due to the armature and the spring sheet on it are limited by the mechanical properties of the product, and in order to improve the on-off sensitivity of the contact, the head width is generally smaller than the rear width, which leads to the current density of the spring sheet part is larger, the product heating is more serious, and then leads to the large temperature rise in the relay, which will affect the electrical life of the product when working. SUMMARY

[0004] In order to overcome the above-mentioned heating problem of electromagnetic relay, the utility model provides a low heat electromagnetic relay armature structure.

[0005] The technical scheme adopted by the utility model is as follows: a low heat electromagnetic relay armature structure, comprising an armature sheet formed into a lever structure with a yoke iron as a supporting point;The first end of the armature sheet is stacked with a moving spring sheet and a conductive sheet, the end of the moving spring sheet and the conductive sheet is fixed with a moving contact, the conductive sheet is electrically connected with a first wiring sheet through a wire, forming a conduction circuit;The second end of the armature sheet is provided with an elastic element.

[0006] Preferably, one end of the conductive sheet is attached to the moving spring sheet for fixing the moving contact, and the other end of the conductive sheet maintains a gap with the moving spring sheet.

[0007] Preferably, the elastic element adopts a tension spring, and the two ends are connected with the armature sheet and the yoke iron respectively.

[0008] Preferably, it further comprises an elastic support, which is supported at the back position of the moving contact.

[0009] The second set of technical solutions adopted by the utility model is as follows: a low heat electromagnetic relay, comprising: an electromagnetic part composed of a core, a bracket, a coil and a yoke iron;The static contact part composed of a second wiring sheet and a static contact;The armature structure;And a shell.

[0010] Preferably, one end of the iron core is connected with the horizontal part of the yoke, and the other end is connected with the attracted armature plate which is supported on the end of the vertical part of the yoke.

[0011] The vertical part of the yoke is provided with an insulating sheet on the side close to the coil.

[0012] Preferably, the electromagnetic part, the static contact part and the attracted armature structure are all mounted on the support.

[0013] The utility model has the advantages that: the utility model adopts a new attracted armature structure, when conducting current, the arrangement and contact mode of the conductive sheet and the moving spring sheet are optimized, the current density of the moving spring sheet part is effectively reduced, the heating phenomenon and internal temperature rise during work are reduced, the working load of the moving spring sheet is reduced by introducing an elastic member, more uniform and stable stress distribution is provided, fatigue damage of the relay during switching action is reduced, the long-term working stability of the relay is improved, and the electric life of the relay can be significantly prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a three-dimensional schematic view of the utility model embodiment.

[0015] Fig. 2 It is an explosion schematic view of the utility model embodiment.

[0016] Fig. 3 It is a front view schematic view of the attracted armature structure in the utility model embodiment.

[0017] Yoke 1; attracted armature plate 2; moving spring sheet 3; conductive sheet 4; moving contact 5; wire 6; first wiring sheet 7; elastic member 8; elastic support 9; iron core 10; support 11; coil 12; insulating sheet 13; second wiring sheet 14; static contact 15; shell 16. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with the embodiments and the drawings.

[0019] In the embodiments, as Figs. 1-3As shown, it is a low heat electromagnetic relay, comprising: electromagnetic part composed of core 10, bracket 11, coil 12 and yoke 1; static contact part composed of second terminal 14 and static contact 15; armature structure; and shell 16. Wherein, the armature structure includes the armature sheet 2 which is supported by yoke 1 to form a lever structure; the first end of armature sheet 2 is stacked with moving spring sheet 3 and conductive sheet 4, the end of moving spring sheet 3 and conductive sheet 4 is fixed with moving contact 5, the conductive sheet 4 is electrically connected with first terminal 7 through wire 6 to form a conduction circuit; the second end of armature sheet 2 is configured with elastic member 8. The embodiment adopts a new armature structure, when conducting current, the arrangement and contact mode of conductive sheet 4 and moving spring sheet 3 are optimized, the current density of moving spring sheet 3 part is effectively reduced, thereby reducing the heat phenomenon and internal temperature rise during work; the working load of moving spring sheet 3 is reduced by introducing elastic member 8, more uniform and stable stress distribution is provided, the fatigue damage of relay in switching action is reduced, the long-term working stability of relay is improved; in general, the electrical life of relay can be significantly prolonged.

[0020] In the embodiment, as shown in the figure, Fig. 3 One end of conductive sheet 4 is attached to moving spring sheet 3 for fixing moving contact 5, and the other end keeps a gap with moving spring sheet 3. The connection of conductive sheet 4 with moving spring sheet 3 and moving contact 5 ensures the strength of the connection structure, increases the current carrying area of the part, reduces the current density, and reduces the resistance heat generation of moving spring sheet 3, which has obvious advantages for the operation of equipment in high temperature environment.

[0021] In the embodiment, as shown in the figure, Fig. 3 The elastic member 8 adopts a tension spring, and the two ends are connected with the armature sheet 2 and the yoke 1 respectively. The tension spring form of elastic member 8 can effectively provide stable support force, and the tension spring helps to keep the moving contact 5 in the right position during the operation of the relay, ensuring that it can respond quickly during the opening and closing process, and enhancing the overall contact stability. Through the orderly design of elastic member 8, rapid response adjustment can be provided during the operation of the relay, which is beneficial to maintain the high efficiency of the contact in the on-off state, especially in high-frequency switching applications, which enhances the sensitivity and reliability of the relay. The use of tension spring makes the structure have good adaptability under different loads and working conditions, and the mechanical properties can remain stable within a large range to meet various application requirements. In addition, the design of tension spring is relatively simple, and the manufacturing and assembly process is relatively mature, which helps to reduce production cost, and also increases convenience during maintenance and replacement.

[0022] In the embodiment, as shown in the figure, Fig. 3As shown, the elastic support 9 is supported at the back position of the movable contact 5. By introducing the elastic support 9, the stability and reliability of the movable contact 5 are enhanced, the contact performance is improved, and the mechanical wear is reduced, thereby improving the overall performance and service life of the relay.

[0023] In the embodiment, as shown in the drawings, Fig. 2 The end of the iron core 10 is connected with the horizontal part of the yoke 1, and the other end is attracted to the armature plate 2, which is supported at the end of the vertical part of the yoke 1. The insulating plate 13 is riveted on the side of the vertical part of the yoke 1 close to the coil 12. The connection design of the iron core 10 with the horizontal part and the vertical part of the yoke 1 ensures the effective concentration and transmission of the electromagnetic field, reduces the loss in the process of converting electrical energy into magnetic energy, and improves the working efficiency of the relay, optimizes the conduction path of the current. By reasonably configuring the relative position of the yoke 1 and the iron core 10, the attraction force of the movable contact 5 can be improved, thereby improving the response speed and reliability of the relay, and ensuring that the movable contact can be quickly closed and opened when the current passes through.

[0024] In the embodiment, as shown in the drawings, Fig. 2 The electromagnetic part, the static contact part and the armature structure are all installed on the bracket 11. The structural innovation of the embodiment simplifies the production process, helps to improve the production efficiency, reduces the manufacturing cost, and provides higher economic benefits for the enterprise.

[0025] Obviously, the above embodiments of the utility model are only examples for illustrating the utility model, and are not limited to the embodiments of the utility model. Other obvious changes or variations derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. A low-heat electromagnetic relay armature structure, characterized in that, It includes an armature plate (2) forming a lever structure with a yoke (1) as the support point; a movable spring plate (3) and a conductive plate (4) are stacked on the first end of the armature plate (2), and movable contacts (5) are fixed at the ends of the movable spring plate (3) and the conductive plate (4). The conductive plate (4) is electrically connected to the first terminal piece (7) via a wire (6) to form a conductive circuit; an elastic element (8) is provided at the second end of the armature plate (2).

2. The low-heat electromagnetic relay armature structure according to claim 1, characterized in that, One end of the conductive sheet (4) is attached to the movable spring sheet (3) to fix the movable contact (5), and the other end is kept at a gap with the movable spring sheet (3).

3. The low-heat electromagnetic relay armature structure according to claim 1, characterized in that, The elastic element (8) is a tension spring, with its two ends connected to the armature plate (2) and the yoke (1) respectively.

4. The low-heat electromagnetic relay armature structure according to claim 1, characterized in that, It also includes an elastic support (9) that supports the back of the moving contact (5).

5. A low-heat electromagnetic relay, characterized in that, include: The electromagnetic part consists of an iron core (10), a support (11), a coil (12), and a yoke (1); The stationary contact portion consists of the second connecting piece (14) and the stationary contact (15); The armature structure according to any one of claims 1 to 4; And the shell (16).

6. The low-heat electromagnetic relay according to claim 5, characterized in that, One end of the iron core (10) is engaged with the horizontal part of the yoke (1), and the other end is engaged with the armature plate (2). The armature plate (2) is supported at the end of the vertical part of the yoke (1).

7. The low-heat electromagnetic relay according to claim 5, characterized in that, An insulating sheet (13) is provided on the side of the vertical part of the yoke (1) near the coil (12).

8. The low-heat electromagnetic relay according to claim 5, characterized in that, The electromagnetic part, the stationary contact part, and the armature structure are all mounted on the bracket (11).

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