Reset reed structure and relay

Abstract

The utility model discloses a reset reed structure and a relay, the reset reed structure comprises a pressure spring in a right angle state, the bending angle part of the pressure spring is provided with an outward arc-shaped bending angle, and the A surface and the B surface of the pressure spring are respectively fixed with a yoke and an armature. The yoke and the armature are fixed into a whole through the right-angle pressure spring, the overall structure of the relay is simplified, and the relay has the advantages of being simple in structure and convenient to assemble; and the pressure spring is firmly installed and is not easy to loosen, the arc-shaped break angle is not easy to deform, and the separated strip-shaped structure is not easy to break, so that the overall stability and reliability of the relay are good.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic relays, in particular to a reset reed structure and a relay. Background Art

[0002] A relay is a common electrical switching device, usually composed of an electromagnet and contacts. When the electromagnet is energized, the magnetic field generated will attract the contacts to close, allowing the current to be conducted through the relay; when the electromagnet is de-energized, the contacts open and the current cannot pass through the relay. Relays are widely used in automatic control systems, and can control the on and off of large currents by controlling small currents, and are used to realize circuit switching, protection, regulation and other functions.

[0003] The reset reed is an important component in the relay. It plays the role of resetting the relay. When the electromagnetic coil is powered off, the reset reed will open the contacts through elastic force and restore to the original state. The reset reed is generally made of elastic materials, such as spring steel. It has a certain elasticity and recovery ability, and can reset the contacts to the initial position through elastic force when the electromagnetic coil is powered on and off. In this way, the relay can achieve repeated switching actions.

[0004] Common faults of reset reeds are as follows: (1) Reed breakage: The reset reed may break due to long-term use or external impact, causing the relay to fail to reset normally; (2) Reed deformation: The reset reed may deform due to overload or overheating, causing it to be unable to return to its original elastic state, thus affecting the reset function of the relay; (3) Reed loosening: The reset reed may fail to reset normally due to loose or falling screws. Therefore, setting a reasonable reset reed structure has an important impact on the performance and reliability of the relay. Utility Model Content

[0005] In order to improve the stability and reliability of a relay, the utility model provides a reset reed structure and a relay.

[0006] The technical solution adopted by the utility model is as follows: a reset spring structure, including a compression spring in a right-angle state, the bending part of the compression spring has an arc-shaped angle facing outward, and the A surface and the B surface of the compression spring are respectively fixed to the yoke iron and the armature.

[0007] Preferably, two No. 1 hooks are formed at the end of the B surface, and the armature forms a limiting protrusion between the two No. 1 hooks. The No. 1 hook and the limiting protrusion are respectively installed and cooperated with the pushing rod and the limiting notch at the front end of the pushing card.

[0008] Preferably, the arc-shaped corner is two separate strip structures.

[0009] Preferably, the compression spring, the yoke and the armature are connected as a whole through rivets.

[0010] Preferably, the yoke is fitted on the base, and the A surface is clamped between the yoke and the base.

[0011] A relay comprises a yoke, an armature, a push card, a coil, an iron core, a moving spring, a static spring and the compression spring, wherein the moving spring is provided with a moving contact, the static spring is provided with a static contact corresponding to the moving contact, the movable end of the moving spring is fixed on the push card, and the armature and the compression spring respectively drive the push card to move and reset.

[0012] Preferably, the movable end of the movable spring sheet forms a No. 2 hook, and the push card is provided with a hanging hole corresponding to the No. 2 hook.

[0013] Preferably, a base is included, a slide rail is provided on the base, two limiting posts are provided on the side of the push card facing the base, and a slide groove cooperating with the slide rail is formed between the two limiting posts.

[0014] The utility model has the following beneficial effects: the utility model utilizes a right-angle compression spring to fix the yoke and the armature as a whole, thereby simplifying the overall structure of the relay and having the advantages of simple structure and convenient assembly; moreover, the compression spring itself is firmly installed and not easy to loosen, the arc-shaped folding angle is not easy to deform, and the separated strip structure is not easy to break, so the overall stability and reliability of the relay are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the assembly of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the assembly of the compression spring, yoke, armature, push card and movable spring in the embodiment of the utility model.

[0018] Compression spring 1, arc-shaped corner 101, A surface 102, B surface 103, No. 1 hook 104; yoke 2; armature 3, limiting protrusion 301; push card 4, push rod 401, limiting notch 402, hanging hole 403, limiting column 404; base 5, slide rail 501; coil 6; iron core 7; moving spring piece 8, No. 2 hook 801; static spring piece 9; moving contact 10; static contact 11; coil frame 12; moving spring foot 13; coil foot 14. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the embodiments and drawings.

[0020] In the embodiment, Figures 1 to 3 As shown, a relay with a stable and reliable reed reset structure is provided. A base 5 is provided, on which are mounted main components such as a compression spring 1, a yoke 2, an armature 3, a push card 4, a coil 6, an iron core 7, a moving reed 8, a static reed 9 and a coil frame 12; the moving reed 8 is provided with a moving contact 10 and a moving spring foot 13, the static reed 9 is provided with a static contact 11 corresponding to the moving contact 10, and the movable end of the moving reed 8 is fixed on the push card 4; the armature 3 and the compression spring 1 respectively drive the push card 4 to move and reset; the coil frame 12 is fixedly mounted on the base 5, the iron core 7 and the coil 6 are respectively mounted inside and outside the coil frame 12, and the coil frame 12 is also provided with a coil foot 14. Among them, the compression spring 1 is in a right-angle shape, and the bent corner portion has an outward arc-shaped corner 101, and the A surface 102 and the B surface 103 of the compression spring 1 are respectively fixed to the yoke 2 and the armature 3. In this embodiment, the yoke 2 and the armature 3 are fixed as a whole by the right-angled compression spring 1, which simplifies the overall structure of the relay and has the advantages of simple structure and easy assembly; moreover, the compression spring 1 itself is firmly installed and not easy to loosen, the outward arc-shaped corner 101 is not easy to deform, and can ensure good elasticity, so the overall stability and reliability of the relay are good.

[0021] In the embodiment, Figure 1 , 3 As shown, two No. 1 hooks 104 are formed at the end of the B surface 103 of the compression spring 1, and the armature 3 forms a limiting protrusion 301 between the two No. 1 hooks 104. The No. 1 hook 104 and the limiting protrusion 301 are respectively installed and matched with the push rod 401 and the limiting notch 402 at the front end of the push card 4. The above structure can be easily installed and connected with the push card 4 at the upper end of the B surface 103 of the compression spring 1, and the limiting protrusion 301 of the armature 3 has two functions, one is to cooperate with the No. 1 hook 104 to clamp the push rod 401 to prevent the push rod 401 from falling off from the No. 1 hook 104, and the other is to limit the push card 4 to the left and right to prevent the push card 4 from shaking left and right, and ensure that the push card 4 can only slide in a straight line direction.

[0022] In the embodiment, Figure 3 As shown, the arc-shaped corner 101 is composed of two separate strip structures. The arc-shaped corner 101 needs to be bent back and forth frequently, and is prone to cracks due to metal fatigue. In addition, the arc-shaped corner 101 is relatively thin and has poor tear resistance. If a whole plate structure is used, once a small crack appears, the arc-shaped corner 101 will quickly break as a whole. However, this embodiment uses two separate strip structures. Even if one of them cracks, the other will not be affected and can still work for a period of time. The slots between the other two strip structures can also release stress, thereby significantly extending the service life of the relay. For some high-power and high-current relays, the arc-shaped corner 101 can be set to a larger number of strip structures.

[0023] In the embodiment, Figure 2 , 3 As shown, the compression spring 1 is connected to the yoke 2 and the armature 3 by rivets. Rivets have the advantage of being easy to process. If there are special requirements, such as requiring better strength, welding can also be used.

[0024] In the embodiment, Figure 2 As shown, the yoke 2 is fitted on the base 5, and the A surface 102 is clamped between the yoke 2 and the base 5. In the above structure, the A surface 102 of the compression spring 1 is connected and fixed to the yoke 2 by rivets, and is further clamped by the yoke 2 and the base 5. The base 5 can also be provided with a matching mounting groove corresponding to the A surface 102. The compression spring 1 is firmly installed without loosening and shaking, and the compression spring 1 is prevented from being unable to reset normally due to looseness, so that the overall stability and reliability of the relay are good.

[0025] In the embodiment, Figure 3 As shown, the movable end of the movable spring piece 8 forms a second hook 801, and the push card 4 is provided with a hanging hole 403 corresponding to the second hook 801. Similarly, this structure facilitates the assembly of the movable spring piece 8 and the push card 4, and both ends of the movable spring piece 8 and the movable spring piece 8 and the compression spring 1 have hook structures that are convenient for assembly, and the production assembly of the product is utilized.

[0026] In the embodiment, Figure 2 As shown, the base 5 is provided with a slide rail 501, and the side of the push card 4 facing the base 5 is provided with two limit posts 404, and a slide groove matched with the slide rail 501 is formed between the two limit posts 404. The two limit posts 404 cooperate with the slide rail 501 to form a good limit effect on the push card 4, so that the push card 4 can only slide in a straight line direction, and the contact area between the limit posts 404 and the slide rail 501 is small, the sliding resistance is small, and it is not easy to be jerky or stuck.

[0027] Obviously, the above embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation methods of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A reset spring structure, characterized in that: The invention comprises a compression spring (1) in a right-angled state, wherein the bent portion of the compression spring (1) has an arc-shaped folded angle (101) facing outwards, and the A surface (102) and the B surface (103) of the compression spring (1) are respectively fixed to the yoke (2) and the armature (3).

2. The reset spring structure according to claim 1, characterized in that: Two No. 1 hooks (104) are formed at the end of the B surface (103), and the armature (3) forms a limiting protrusion (301) between the two No. 1 hooks (104). The No. 1 hook (104) and the limiting protrusion (301) are respectively mounted and matched with the push rod (401) and the limiting notch (402) at the front end of the push card (4).

3. The reset spring structure according to claim 1, characterized in that: The arc-shaped folded corner (101) is two separated strip-shaped structures.

4. The reset spring structure according to claim 1, characterized in that: The compression spring (1), the yoke (2) and the armature (3) are connected as a whole via rivets.

5. The reset spring structure according to claim 1, characterized in that: The yoke (2) is fitted and mounted on the base (5), and the A surface (102) is clamped between the yoke (2) and the base (5).

6. A relay, characterized in that: The invention comprises a yoke (2), an armature (3), a push card (4), a coil (6), an iron core (7), a movable spring (8), a static spring (9) and a compression spring (1) according to any one of claims 1 to 5, wherein the movable spring (8) is provided with a movable contact (10), the static spring (9) is provided with a static contact (11) corresponding to the movable contact (10), the movable end of the movable spring (8) is fixed on the push card (4), and the armature (3) and the compression spring (1) respectively drive the push card (4) to move and reset.

7. The relay according to claim 6, characterized in that: The movable end of the movable spring sheet (8) forms a second hook (801), and the push card (4) is provided with a hanging hole (403) corresponding to the second hook (801).

8. The relay according to claim 6, characterized in that: The invention comprises a base (5), wherein a slide rail (501) is provided on the base (5), and the push card (4) has two limit posts (404) on one side facing the base (5), wherein a slide groove cooperating with the slide rail (501) is formed between the two limit posts (404).

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