CN213093146U

CN213093146U - Relay arc-blowing device with ceramic protection

Info

Publication number: CN213093146U
Application number: CN202021905057.3U
Authority: CN
Inventors: 唐俊平
Original assignee: Sanyou Corp Ltd
Current assignee: Sanyou Corp Ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-30
Anticipated expiration: 2030-09-03

Abstract

The utility model relates to a take relay arc-blowing device of ceramic protection, relay include the epitheca, include arc-blowing device and two stationary contacts in the epitheca, still include the ceramic protective housing, the ceramic protective housing separates arc-blowing device and stationary contact. The ceramic protective housing separates the stationary contact and the magnet of the arc blowing device, and excellent insulation and heat insulation effects of the ceramic can avoid the magnetic field intensity reduction of the magnet due to the high temperature generated by the electric arc splashing on the magnet, and the arc blowing effect of the arc blowing device is influenced.

Description

Relay arc-blowing device with ceramic protection

Technical Field

The utility model relates to an electrics field especially relates to a take relay arc-blowing device of ceramic protection.

Background

When current direct current relay sound contact separation, because high voltage and heavy current, can produce electric arc in the contact clearance, direct current electric arc's particularity makes the principle and the method of going out direct current electric arc totally different with alternating current electric arc, current method adopts plus magnet to produce magnetic field mostly, in order to blow electric arc to both sides, accelerate the velocity of motion of electric arc simultaneously, this kind of method is called magnetic blow or arc blowing, but this kind of mode is in order to strengthen the magnetic field intensity of stationary contact department, magnet is located the nearer place of stationary contact usually, lead to sometimes to have electric arc to splash to magnet, produce high temperature, and magnet receives high temperature can lead to its magnetic field intensity to reduce, it will influence the arc blowing effect for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a relay arc-blowing device can avoid electric arc to splash to the problem that leads to the high temperature to arouse that magnetic field intensity reduces on the magnet.

Therefore, the relay with the ceramic protection comprises an upper shell, wherein the upper shell comprises the arc blowing device and two stationary contacts, and the ceramic protection shell separates the arc blowing device from the stationary contacts.

Furthermore, the arc blowing device comprises a magnet, and a magnetic conduction block is additionally arranged on the magnet.

Furthermore, the arc blowing device comprises two magnets, wherein the two magnets are respectively provided with a magnetic conduction block and are respectively positioned at two ends of a connecting line extension line of the static contact.

Further, the accommodating groove is formed in the inner wall of the shell at the two ends of the extension line of the two stationary contact connecting lines respectively, the cross section of the accommodating groove is in a U shape, the top end of the U-shaped opening of the accommodating groove is provided with a side wall extension part A extending towards the direction close to the other side wall, the cross section of the ceramic protective shell is in a U shape, the top end of the U-shaped opening of the ceramic protective shell is provided with a side wall extension part B extending towards the direction away from the other side wall, the side wall extension part A of the ceramic protective shell is placed in the accommodating groove, so that the ceramic protective shell and the mounting groove are encircled to form an accommodating space with a convex cross section, and the magnet and the magnetic conduction block are located in the accommodating space.

Further, the magnetic conduction block is specifically an iron block.

Further, the volume of the magnetic conduction block is larger than that of the magnet.

Further, the upper shell also comprises at least one mounting column, and the mounting column and the upper shell are integrally formed.

Further, the mounting post has external threads.

Furthermore, the mounting column is provided with a hole, and the hole is provided with an internal thread.

Furthermore, the mounting structure further comprises a nut, wherein the mounting column is provided with a hole, and the nut is positioned in the hole.

Has the advantages that:

the ceramic protective housing separates the stationary contact and the magnet of the arc blowing device, and excellent insulation and heat insulation effects of the ceramic can avoid the magnetic field intensity reduction of the magnet due to the high temperature generated by the electric arc splashing on the magnet, and the arc blowing effect of the arc blowing device is influenced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of the relay of the present invention without a lower case;

figure 2 is a schematic view of the internal structure of the arc-blowing device of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1-2, the relay of the present invention includes an upper casing 1 and a lower casing (not shown), the lower casing is mounted on the upper casing 1 through a buckle 12 on the upper casing 1, a yoke panel 7 is mounted on the upper casing 1, the upper casing 1 and the yoke panel 7 together enclose an arc extinguish chamber, and a coil 8 of the relay is mounted at one end of the yoke panel 7 far away from the upper casing 1.

The utility model discloses an arc blowing device is located relay epitheca 1, distributes two stationary contacts 2 in the relay epitheca 1, and stationary contact 2 passes the electric wire connection in relay epitheca 1 and the outside, and when coil 8 circular telegram, the movable contact motion that drives the relay makes the relay switch on to contacting with two stationary contacts 2 simultaneously, and then switches on the outside electric wire.

When the relay is switched on and off, because the distance between the fixed contact 2 and the movable contact is close, electric arc can be generated between the fixed contact 2 and the movable contact, therefore, see fig. 1, two magnets 3 are arranged at two ends of an extension line of a connecting line of the two fixed contacts 2 and used as arc blowing devices, N poles of the two magnets point to the same direction and coincide with a central connecting line of the fixed contacts, thereby the electric arc generated when the movable and fixed contacts are switched on and off is blown to two sides of the connecting line of the fixed contacts 2, the arc blowing devices formed by the magnets 3 arranged in the mode are arranged, and because a main magnetic field line passes through the connecting line of the relay, the switching performance of the relay cannot be influenced by the positive and negative wiring mode of the fixed contact 2 of the.

In order to solve the problem that the electric arc splashes to the magnet 3 to cause the magnetic field intensity to reduce, the ceramic protective housing 4 is respectively arranged on one side of the two magnets 3 facing the fixed contact 2, the fixed contact 2 and the magnet 3 are separated by the ceramic protective housing 4, the electric arc splashed to the magnet 3 is blocked by the ceramic protective housing 4, the magnetic field intensity reduction caused by the high temperature generated when the electric arc splashes to the magnet 3 can be avoided, and the ceramic can be stably used for a long time due to excellent insulating and heat-insulating effects of the ceramic and is heat-resistant compared with plastic.

In order to improve the magnetic field intensity, the two magnets 3 are respectively provided with an iron block serving as the magnetic conduction block 5, and the magnetic domains of the iron blocks are arranged along the magnetic field lines under the action of the magnetic field, so that the iron blocks can be regarded as one magnet, the magnetic flux of the arc blowing device can be increased, the effect of the arc blowing device is improved, the speed of an electric arc is increased, and arc extinction is realized as fast as possible.

Since the cost of the iron block is much lower than that of the magnet 3, the volume of the iron block as the magnetic conductive block 5 is generally larger than that of the magnet 3 itself in view of cost.

The inner walls of the shell 1 at two ends of the extension line of the two stationary contact connecting lines 2 are respectively provided with a containing groove 13, the cross section of the containing groove 13 is U-shaped, the top end of the U-shaped opening is provided with two side walls of the U-shaped containing groove 13 which are provided with side wall extension parts A extending towards the direction close to the other side wall, the cross section of the ceramic protective shell 4 is U-shaped, the top end of the U-shaped opening of the ceramic protective shell 4 is provided with side wall extension parts B extending towards the direction far away from the other side wall, the side wall extension parts A of the ceramic protective shell 4 are placed in the containing groove 13, the side wall extension parts B of the containing groove 13 can clamp the ceramic protective shell 4, the ceramic protective shell 13 is limited in the containing groove 13, so that the ceramic protective shell 4 and the containing groove 13 can form a containing space with a convex cross section, and the, in consideration of saving space and cost, the magnetic conduction block 5 is arranged on one side far away from the ceramic protection shell 4, and the ceramic protection shell 4, the magnet 3 and the magnetic conduction block 5 are sequentially arranged from the static contact 2 to the shell 1.

In this embodiment, the upper casing 1 has the erection column 11 integrated with the upper casing 1, and it has the hole to open on the erection column 11, has laid the nut 6 in the hole to the accessible is with the erection column 11 of upper casing 1 integrated with during the equipment, assembles the yoke panel 7 of relay on the upper casing 1, has reduced the assembly structure in the upper casing 1, when guaranteeing that the relay has sufficient arc-blowing space, can do compactlyer as far as possible, reduces the volume of relay.

It should be mentioned that the mounting post 11 may not be wrapped by the accommodating nut 6, but an external thread structure is directly processed on the mounting post 11, or a hole is formed on the mounting post 11, and an internal thread is processed on the hole, which does not affect the effect.

It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a take relay blowout device of ceramic protection, relay include epitheca (1), include blowout device and two stationary contact (2) in epitheca (1), its characterized in that still includes ceramic protective housing (4), ceramic protective housing (4) separate the blowout device with stationary contact (2).

2. The relay blowout device with ceramic protection according to claim 1, wherein: the arc blowing device comprises a magnet (3), and a magnetic conduction block (5) is additionally arranged on the magnet (3).

3. The relay blowout device with ceramic protection according to claim 2, wherein: the arc blowing device comprises two magnets (3), wherein the two magnets (3) are respectively provided with a magnetic conduction block (5) which are respectively positioned at two ends of a connecting line extension line of the static contact (2).

4. The relay blowout device with ceramic protection according to claim 3, wherein: the inner walls of the upper shell (1) at two ends of the extension line of the connecting line of the two stationary contacts (2) are respectively provided with a containing groove (13), the cross section of the containing groove (13) is U-shaped, at the top end of the U-shaped opening of the accommodating groove (13), two side walls of the U-shaped accommodating groove (13) are provided with side wall extension parts A extending towards the direction close to the other side wall, the cross section of the ceramic protective shell (4) is U-shaped, the top end of the U-shaped opening of the ceramic protective shell (4), the two side walls of the ceramic protective shell (4) are provided with side wall extension parts B extending towards the direction far away from the other side wall, the side wall extension parts A of the ceramic protective shell (4) are placed in the accommodating groove (13), therefore, the ceramic protective shell (4) and the accommodating groove (13) are encircled to form an accommodating space with a convex cross section, and the magnet (3) and the magnetic conduction block (5) are positioned in the accommodating space.

5. The relay blowout device with ceramic protection according to claim 2, wherein: the magnetic conduction block (5) is specifically an iron block.

6. The relay blowout device with ceramic protection according to claim 2, wherein: the volume of the magnetic conduction block (5) is larger than that of the magnet (3).

7. The relay blowout device with ceramic protection according to claim 1, wherein: the upper shell (1) further comprises at least one mounting column (11), and the mounting column (11) and the upper shell (1) are integrally formed.

8. The relay blowout device with ceramic protection according to claim 7, wherein: the mounting post (11) has an external thread.

9. The relay blowout device with ceramic protection according to claim 7, wherein: the mounting column (11) is provided with a hole, and the hole is provided with an internal thread.

10. The relay blowout device with ceramic protection according to claim 7, wherein: still include nut (6), erection column (11) are opened has the hole, nut (6) are located the hole.