High-load relay capable of rapidly extinguishing arc

Abstract

The utility model discloses a fast arc extinguishing high load relay, which relates to the relay technology field, and comprises a housing, the inner wall of the housing is fixedly connected with a base plate, the inner part of the housing is fixedly connected with a coil rack, the top part of the coil rack is fixedly connected with a coil, and the inner part of the housing is fixedly connected with a yoke and an armature. The yoke is located on one side of the coil, a static reed is fixedly connected to the interior of the shell, a static contact is arranged at one end of the static reed, a movable reed is fixedly connected to the bottom end of the armature, a movable contact is arranged at one end of the movable reed, a placement groove is formed in the top of the shell, and magnetic steel is placed in the placement groove. According to the utility model, the performance of product load can be effectively improved through magnetic steel arc extinguishing, more use scenes of customers are satisfied, the inside of the relay is not changed, a magnetic steel placing groove is added outside the housing, and the length of the relay is increased to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technology field, concretely is a high load relay of quick arc extinguishing. BACKGROUND

[0002] HRS4N relay is widely used in the field of household appliances, and the load is generally corresponding to 12VDC, 24VDC system. The present customer proposes to meet the product of 48VDC, 72VDC system: the load DC voltage is proportional to the strength and arc time of arc during load breaking, which leads to premature failure of the relay, so the problem is usually improved by increasing the contact gap.

[0003] At present, due to the limitation of internal space, the space of the increased contact gap is limited, and the arc generated by load breaking in high-voltage DC system cannot be effectively extinguished; the contact gap will affect the pull-in voltage of the relay, and the excessive gap will lead to insufficient magnetic force of the relay coil, thereby affecting the service life of the relay, so it is difficult to effectively improve the problem by increasing the contact gap, therefore, the utility model provides a high load relay of quick arc extinguishing. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at making up for the deficiency of prior art, and provides a high load relay of quick arc extinguishing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high load relay of quick arc extinguishing, comprising a shell, the inner wall of the shell is fixedly connected with a bottom plate, the inside of the shell is fixedly connected with a coil holder, and the top of the coil holder is fixedly connected with a coil, the inside of the shell is fixedly connected with a yoke and an armature respectively, and the yoke is located on one side of the coil, the inside of the shell is fixedly connected with a static spring piece, and one end of the static spring piece is provided with a static contact, the bottom end of the armature is fixedly connected with a dynamic spring piece, and one end of the dynamic spring piece is provided with a dynamic contact, the top of the shell is excavated with a placing groove, and the inside of the placing groove is placed with a magnetic steel.

[0006] The placing groove is connected with the magnetic steel through glue, and the shape of the magnetic steel is cuboid.

[0007] One end of the magnetic steel is close to the static contact and the dynamic contact, and the height of the magnetic steel is higher than that of the dynamic contact.

[0008] Compared with the prior art, the high load relay of quick arc extinguishing has the following beneficial effects:

[0009] Firstly, the arc extinguishing of the magnetic steel can effectively improve the performance of the product load and meet more use scenarios of the customer.

[0010] Second, the relay in the utility model has no any change, the shell is externally added with a magnetic steel placing groove, and the relay length size is increased to a certain extent.

[0011] The other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, will be obvious to those skilled in the art based on the study of the following or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an overall three-dimensional structure schematic view of the utility model;

[0013] Figure 2 It is a local three-dimensional structure schematic view of the utility model;

[0014] Figure 3 It is a three-dimensional structure schematic view of the shell and the placing groove in the utility model;

[0015] Figure 4 It is a three-dimensional structure schematic view of the magnetic steel in the utility model.

[0016] In the drawing: 1, shell; 2, bottom plate; 3, coil holder; 4, coil; 5, yoke; 6, armature; 7, static spring piece; 8, dynamic spring piece; 9, placing groove; 10, magnetic steel. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] As Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a kind of technical scheme: a kind of high load relay of quick arc extinguishing includes shell 1, the inner wall of shell 1 is fixedly connected with bottom plate 2, the inside of shell 1 is fixedly connected with coil holder 3, and the top of coil holder 3 is fixedly connected with coil 4, the inside of shell 1 is fixedly connected with yoke 5 and armature 6 respectively, and yoke 5 is located at one side of coil 4, the inside of shell 1 is fixedly connected with static spring piece 7, and one end of static spring piece 7 is equipped with static contact, the bottom end of armature 6 is fixedly connected with dynamic spring piece 8, and one end of dynamic spring piece 8 is equipped with dynamic contact, the top of shell 1 is chiseled with placing groove 9, and magnetic steel 10 is placed in the inside of placing groove 9.

[0019] According to the overall structure of the device, the lifting of the load DC voltage is proportional to the intensity and the arc time of the arc when the load is disconnected, and the arc needs to be quickly extinguished to ensure the service life of the relay. Due to the limitation of the internal structure of the relay, the space for increasing the contact gap is limited, and the winding diameter of the enameled wire is limited. The load DC high voltage cannot be effectively extinguished. The magnetic steel 10 is placed near the contact position to extinguish the arc, and plays a role in extinguishing the arc when the relay load is disconnected.

[0020] As Figure 1 , Figure 2 , Figure 3 and Figure 4 , the placement groove 9 is connected with the magnetic steel 10 by glue, the shape of the magnetic steel 10 is a cuboid, one end of the magnetic steel 10 is close to the static contact and the moving contact, and the height of the magnetic steel 10 is higher than the height of the moving contact.

[0021] By coating the glue, the magnetic steel 10 and the placement groove 9 can be fixedly connected, and after the glue is coated on the surface of the magnetic steel 10, the small defects of the magnetic steel 10 can be filled, the compactness and the magnetic field strength of the magnetic steel 10 are improved, and the height of the magnetic steel 10 is set to be higher than the height of the moving contact, so that the N pole or the S pole of the magnetic steel 10 covers the moving contact, the static contact and the contact gap, so that the arc extinguishing effect is best when the arc is extinguished when the relay load is disconnected.

[0022] Working principle: a placement groove 9 is dug near the static contact and the moving contact of the shell 1, the magnetic steel 10 is placed in the newly added placement groove 9 of the shell 1, and the glue is used for fixation, when the arc is extinguished when the relay load is disconnected, the magnetic steel 10 uses the magnetic field to act on the current, so that the arc is quickly separated from the conductive element, thereby achieving the purpose of arc extinguishing.

[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high load relay with fast arc extinction comprising a housing (1), characterized in that: The inner wall of the shell (1) is fixedly connected with a bottom plate (2), the inside of the shell (1) is fixedly connected with a coil holder (3), and the top of the coil holder (3) is fixedly connected with a coil (4), the inside of the shell (1) is fixedly connected with a yoke (5) and an armature (6) respectively, and the yoke (5) is located on one side of the coil (4), the inside of the shell (1) is fixedly connected with a static spring piece (7), and one end of the static spring piece (7) is provided with a static contact point, the bottom end of the armature (6) is fixedly connected with a dynamic spring piece (8), and one end of the dynamic spring piece (8) is provided with a dynamic contact point, the top of the shell (1) is excavated with a placing groove (9), and the inside of the placing groove (9) is placed with a magnetic steel (10).

2. A high load relay with fast arc extinction according to claim 1, characterized in that: The placing groove (9) is connected with the magnetic steel (10) through glue, and the shape of the magnetic steel (10) is cuboid.

3. A high load relay with fast arc extinction according to claim 1, characterized in that: One end of the magnetic steel (10) is close to the static contact point and the dynamic contact point, and the height of the magnetic steel (10) is higher than the height of the dynamic contact point.

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