Relay structure for preventing arc short circuit

Abstract

The utility model relates to the technical field of relays, in particular to a relay structure for preventing arc short circuit, which comprises a frame body, an electromagnetic component arranged on the frame body, a contact component matched with the electromagnetic component for use and a cover body arranged on the frame body, the contact assembly comprises a pin A, a reed, a static contact and a movable contact, the reed and the pin A are arranged at an interval, the static contact is arranged on the pin A, the movable contact is arranged on the reed, the check block abuts against the pin A, and the reed is driven by the electromagnetic assembly so that the movable contact can make contact with the static contact. The relay is compact in structure and reasonable in design, the distance between the pin A and the reed is increased by additionally arranging the stop block, and the insulation performance of the load end of the relay is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay structure for preventing arc short circuit. Background Art

[0002] A relay is an electrical control device. When the change of the input quantity reaches the specified requirements, it causes the controlled quantity to undergo a predetermined step change in the electrical output circuit. It has an interactive relationship between the input circuit and the output circuit. It is usually used in automated control circuits. In fact, it is an automatic switch that uses a small current to control a large current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit. During the use of the relay, the metal splashes generated by the contacts during the disconnection process will adhere to the internal periphery of the relay, causing a short circuit between the A pin and the reed, resulting in poor insulation and withstand voltage of the relay. Utility Model Content

[0003] The utility model aims to provide a relay structure for preventing arc short circuit in view of the deficiencies in the prior art, which has a compact structure and a reasonable design, and increases the distance between the A foot and the reed by adding a stopper to enhance the insulation performance of the relay load end.

[0004] To achieve the above-mentioned purpose, the utility model provides a relay structure for preventing arc short circuit, comprising a frame, an electromagnetic component arranged on the frame, a contact component used in conjunction with the electromagnetic component, and a cover arranged on the frame, the cover being provided with a block, the contact component comprising an A foot, a spring sheet arranged at intervals from the A foot, a static contact arranged on the A foot, and a moving contact arranged on the spring sheet, the block abutting against the A foot, and the spring sheet is driven by the electromagnetic component so that the moving contact contacts the static contact.

[0005] Preferably, the stopper is in an L-shaped structure, and the cover body is covered on the frame body, so that the stopper is respectively in contact with the top wall and the side wall of the A foot.

[0006] Preferably, the cover body is concavely provided with a card slot, and there are multiple card slots, which are arranged around the circumference of the cover body; the frame body is convexly provided with a card block, and there are multiple card blocks, which are arranged around the circumference of the frame body, and the card block protrudes into the card slot.

[0007] Preferably, the cover body is concavely provided with an annular groove, which is arranged around the circumference of the cover body, and the frame body is convexly provided with an annular rib, which is arranged around the circumference of the frame body, and the annular rib is accommodated in the annular groove.

[0008] Preferably, the electromagnetic assembly includes a coil frame, a coil sleeved on the outside of the coil frame, a yoke arranged on the coil frame, an armature assembly rotatably arranged on the frame, and a pushing member arranged on the armature assembly, the armature assembly includes a rotating seat, a first armature and a second armature arranged on the rotating seat, and a pushing arm arranged on the rotating seat, the first armature and the second armature are spaced apart and arranged in parallel so that the yoke is located between the first armature and the second armature, the pushing arm extends in a direction away from the rotating seat, one end of the pushing member is connected to the pushing arm, and the other end of the pushing member is connected to the spring sheet.

[0009] Preferably, a rotating block is provided on the outer side of the rotating seat, and the cover body is provided with a connecting hole connected to the rotating block.

[0010] The utility model has the following beneficial effects: the structure is compact and the design is reasonable; the distance between the A foot and the reed is increased by adding a stopper, thereby enhancing the insulation performance of the relay load end. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the structure of the utility model after the cover body is half hidden.

[0013] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0014] Figure 4 It is a schematic diagram of the cover structure of the utility model.

[0015] Reference numerals include:

[0016] 1——frame 11——block 12——ring rib

[0017] 2——Electromagnetic component 21——Coil frame 22——Coil

[0018] 23 - Yoke

[0019] 24——armature assembly 241——rotating seat 242——first armature

[0020] 243——Second armature 244——Push arm 245——Rotating block

[0021] 25——Pushing member

[0022] 3——Contact assembly 31——A foot 32——Reed

[0023] 33——static contact 34——moving contact

[0024] 4——cover 41——stopper 42——slot

[0025] 43——ring groove 44——connecting hole. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 4 As shown, a relay structure for preventing arc short circuit of the utility model comprises a frame 1, an electromagnetic component 2 arranged on the frame 1, a contact component 3 used in conjunction with the electromagnetic component 2 and a cover body 4 arranged on the frame 1, the cover body 4 is provided with a stopper 41, the contact component 3 comprises an A foot 31, a spring 32 arranged at a distance from the A foot 31, a static contact 33 arranged on the A foot 31 and a moving contact 34 arranged on the spring 32, the stopper 41 abuts against the A foot 31, and the spring 32 is driven by the electromagnetic component 2 so that the moving contact 34 contacts the static contact 33.

[0028] The electromagnetic assembly 2 and the contact assembly 3 are respectively installed at the two ends of the frame 1, and the cover body 4 is connected to the frame 1. The cover body 4 is fitted and abutted against the A foot 31 through the stopper 41. The stopper 41 is located in front of the A foot 31 and separates the A foot 31 and the reed 32, thereby increasing the gap between the moving contact 34 and the static contact 33, and improving the arc extinguishing ability by increasing the creepage distance. It has the characteristics of simple structure, low manufacturing cost, and good arc extinguishing effect, and strengthens the insulation performance of the A foot 31 and the reed 32. The reed 32 is driven by the electromagnetic assembly 2 so that the moving contact 34 contacts the static contact 33. The utility model has a compact structure and a reasonable design. By adding the stopper 41, the distance between the A foot 31 and the reed 32 is increased, and the insulation performance of the load end of the relay is strengthened.

[0029] The stopper 41 of this embodiment is in an L-shaped structure, and the cover body 4 is covered on the frame body 1, so that the stopper 41 is respectively in contact with the top wall and the side wall of the A foot 31. Specifically, when the cover body 4 is covered and connected to the frame body 1, the stopper 41 in an L-shaped structure is in contact with the A foot 31, so that the two outer walls of the stopper 41 that are perpendicular to each other are respectively in contact with the top wall and the side wall of the A foot 31, thereby fixing the position of the A foot 31, and effectively spacing the A foot 31 and the spring 32, increasing the creepage distance between the A foot 31 and the spring 32, and further increasing the gap between the moving contact 34 and the static contact 33.

[0030] In this embodiment, the cover body 4 is provided with a recessed card slot 42, and the card slot 42 is provided in plurality, and the plurality of card slots 42 are provided around the circumference of the cover body 4, and the frame body 1 is provided with a protruding card block 11, and the card block 11 is provided in plurality, and the plurality of card blocks 11 are provided around the circumference of the frame body 1, and the card block 11 protrudes into the card slot 42. Specifically, as a preferred embodiment, there are four card slots 42, and the four card slots 42 are provided around the circumference of the cover body 4, and there are four card blocks 11, and the four card blocks 11 are provided around the circumference of the frame body 1, and the four card blocks 11 protrude into the four card slots 42 respectively, so that the cover body 4 can be detachably connected to the frame body 1, the force is uniform, and the installation and disassembly are convenient.

[0031] The cover body 4 of this embodiment is provided with an annular groove 43, which is provided around the circumference of the cover body 4, and the frame body 1 is provided with an annular rib 12, which is provided around the circumference of the frame body 1, and the annular rib 12 is accommodated in the annular groove 43. Specifically, the annular groove 43 is provided around the circumference of the cover body 4, and the annular rib 12 is provided around the circumference of the frame body 1. When the annular rib 12 is accommodated in the annular groove 43, the cover body 4 can be placed horizontally and stably on the frame body 1, and the connection stability between the cover body 4 and the frame body 1 is further improved.

[0032] The electromagnetic assembly 2 of this embodiment includes a coil frame 21, a coil 22 sleeved on the outside of the coil frame 21, a yoke 23 arranged on the coil frame 21, an armature assembly 24 rotatably arranged on the frame 1, and a pusher 25 arranged on the armature assembly 24, the armature assembly 24 includes a rotating seat 241, a first armature 242 and a second armature 243 arranged on the rotating seat 241, and a pusher arm 244 arranged on the rotating seat 241, the first armature 242 and the second armature 243 are spaced and arranged in parallel so that the yoke 23 is located between the first armature 242 and the second armature 243, the pusher arm 244 is extended in a direction away from the rotating seat 241, one end of the pusher 25 is connected to the pusher arm 244, and the other end of the pusher 25 is connected to the spring leaf 32. Specifically, the yoke 23 is located between the first armature 242 and the second armature 243. When the coil 22 is energized, an electromagnetic force is generated through the yoke 23 to attract the first armature 242 or the second armature 243, thereby driving the rotating seat 241 to rotate relative to the frame 1. The rotating rotating seat 241 uses the pushing arm 244 to horizontally push the pushing member 25. Since one end of the pushing member 25 is connected to the pushing arm 244, and the other end of the pushing member 25 is connected to the spring leaf 32, the moving contact 34 of the spring leaf 32 is driven to conduct or disconnect the static contact 33. The structure is compact and the design is reasonable, and the transmission efficiency is high.

[0033] The rotating seat 241 of this embodiment is provided with a rotating block 245 on its outer side, and the cover body 4 is provided with a connecting hole 44 connected to the rotating block 245. Specifically, the rotating seat 241 is connected to the connecting hole 44 through the rotating block 245, which helps the rotating seat 241 to rotate relative to the frame body 1 and the cover body 4, and the connection stability is good.

[0034] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A relay structure for preventing arc short circuit, characterized in that: The invention comprises a frame, an electromagnetic component arranged on the frame, a contact component used in conjunction with the electromagnetic component and a cover arranged on the frame, wherein the cover is provided with a stopper, and the contact component comprises an A foot, a spring sheet arranged at a distance from the A foot, a static contact arranged on the A foot and a moving contact arranged on the spring sheet, wherein the stopper abuts against the A foot, and the spring sheet is driven by the electromagnetic component so that the moving contact contacts the static contact.

2. A relay structure for preventing arc short circuit according to claim 1, characterized in that: The stopper is in an L-shaped structure, and the cover body is covered on the frame body so that the stopper is respectively in contact with the top wall and the side wall of the A foot.

3. A relay structure for preventing arc short circuit according to claim 2, characterized in that: The cover body is concavely provided with a card slot, and there are multiple card slots, which are arranged around the circumference of the cover body. The frame body is convexly provided with a card block, and there are multiple card blocks, which are arranged around the circumference of the frame body, and the card block protrudes into the card slot.

4. A relay structure for preventing arc short circuit according to claim 3, characterized in that: The cover body is concavely provided with an annular groove, which is arranged around the circumference of the cover body; the frame body is convexly provided with an annular rib, which is arranged around the circumference of the frame body, and the annular rib is accommodated in the annular groove.

5. The relay structure for preventing arc short circuit according to claim 1, characterized in that: The electromagnetic assembly includes a coil frame, a coil sleeved on the outside of the coil frame, a yoke arranged on the coil frame, an armature assembly rotatably arranged on the frame, and a pushing member arranged on the armature assembly. The armature assembly includes a rotating seat, a first armature and a second armature arranged on the rotating seat, and a pushing arm arranged on the rotating seat. The first armature and the second armature are spaced apart and arranged in parallel so that the yoke is located between the first armature and the second armature. The pushing arm extends in a direction away from the rotating seat. One end of the pushing member is connected to the pushing arm, and the other end of the pushing member is connected to the spring sheet.

6. A relay structure for preventing arc short circuit according to claim 5, characterized in that: A rotating block is arranged on the outer side of the rotating seat, and a connecting hole connected with the rotating block is arranged on the cover body.

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