阅读说明：本技术 一种带辅助触点的高压密封直流接触器 (High-pressure sealing direct current contactor with auxiliary contact ) 是由 许毅 刘鹏 程庆勇 黄彩丽 于 2021-09-22 设计创作，主要内容包括：本发明涉及一种带辅助触点的高压密封直流接触器,包括一种带辅助触点的高压密封直流接触器,包括陶瓷座,陶瓷座上固定连接有辅助点杆和接触点杆,陶瓷座的形状为凸形立体结构,陶瓷座外表面设有凹槽结构,且凹槽结构内设有灭弧磁钢,陶瓷座套设有导磁支架,陶瓷座两侧固定安装有辅助点杆和接触点杆,陶瓷座的形状直接将接触点杆部分与辅助点杆部分隔开,外部无需为了耐压要求点胶隔离接触点杆与辅助点杆且占用空间小,灭弧磁钢面积不受影响,有效增加产品灭弧能力。(The invention relates to a high-pressure sealing direct current contactor with an auxiliary contact, which comprises a ceramic seat, wherein an auxiliary point rod and a contact point rod are fixedly connected to the ceramic seat, the ceramic seat is in a convex three-dimensional structure, a groove structure is arranged on the outer surface of the ceramic seat, arc extinguishing magnetic steel is arranged in the groove structure, a magnetic conduction support is sleeved on the ceramic seat, the auxiliary point rod and the contact point rod are fixedly arranged on two sides of the ceramic seat, the contact point rod part and the auxiliary point rod part are directly separated by the shape of the ceramic seat, the contact point rod and the auxiliary point rod are not required to be glued and isolated from each other outside for pressure resistance, the occupied space is small, the area of the arc extinguishing magnetic steel is not influenced, and the arc extinguishing capacity of a product is effectively increased.)

1. The utility model provides a take high-pressure seal direct current contactor of auxiliary contact, includes ceramic seat (1), its characterized in that: fixedly connected with auxiliary point pole (2) and contact point pole (3) on ceramic seat (1), the shape of ceramic seat (1) is convex spatial structure, ceramic seat (1) surface is equipped with groove structure, and is equipped with arc extinguishing magnet steel (11) in the groove structure, ceramic seat (1) cover is equipped with magnetic conduction support (12), sets up arc extinguishing magnet steel (211) in ceramic seat (2) groove structure.

Ceramic seat (1) both sides fixed mounting has auxiliary point pole (2) and contact point pole (3), the shape of ceramic seat (1) is direct separates contact point pole (3) part and auxiliary point pole (2) part, and the outside need not to keep apart contact point pole (3) and auxiliary point pole (2) for withstand voltage requirement point is glued, ceramic seat (1) bottom is equipped with shield cover (4), ceramic seat (1) bottom is connected with shield cover (4) through connecting washer (5), shield cover (4) bottom fixedly connected with push rod group part (6), be equipped with contact piece (7) and supplementary reed (62) in push rod group part (6).

2. The high-pressure sealing direct current contactor with the auxiliary contact as claimed in claim 1, wherein: including support (61), supplementary reed (62), working of plastics (63), push rod (64) and contact piece (7) in push rod group part (6), support (61) below fixedly connected with contact piece (7), contact piece (7) bottom fixedly connected with spring (8), the one end fixed mounting that the contact piece was kept away from in spring (8) has working of plastics (63).

3. The high-pressure sealing direct current contactor with the auxiliary contact as claimed in claim 2, wherein: an auxiliary reed (62) is fixed in the middle of the plastic piece (63), a silver contact is arranged on the auxiliary reed (62), an opening is formed in the center of the bottom of the plastic piece (63), and a push rod (64) is fixedly connected in the opening.

Technical Field

The invention relates to the technical field of direct current contactors, in particular to a high-pressure sealing direct current contactor with an auxiliary contact.

Background

The dc contactor is a contactor whose iron core is controlled by dc, and its load may be dc or ac. The core of the dc contactor is not the same as the ac contactor in that it has no eddy current, and thus is generally formed in a circular shape using mild steel or industrial pure iron. Because the attraction coil of the DC contactor is electrified with DC, the DC contactor has no impact starting current and does not generate the phenomenon of violent impact of an iron core, thereby having long service life and being suitable for occasions of frequent starting and stopping. The alternating current contactor and the direct current contactor can be selected to look up the catalogue of the electric appliance product according to the working voltage and the current of a line.

There are some disadvantages in the prior art:

at present, because of the problems of sealing and design, a sealing direct current contactor in the market generally does not have an auxiliary contact, the auxiliary contact of the sealing direct current contactor with the auxiliary contact is generally provided with a microswitch on the side edge of an arc extinguish chamber, a push rod is connected with a plastic sheet, and the plastic sheet moves along with the push rod and simultaneously stirs the microswitch to be switched on and off, namely, a signal is switched on through the on (or off) state of the microswitch. However, the structure has a small stroke because of the micro switch, the function of the contactor is affected by the phenomenon that the state of the main contact is inconsistent with the state of the auxiliary contact easily, and in addition, the auxiliary contact is arranged on the side surface of the main contact, occupies a large space, needs to reduce the arc extinguishing magnetic steel space, is not beneficial to the arc extinguishing of the main contact, and causes unstable breaking performance of a product. And the manufacturing process is complicated, the contact resistance is large, and the cost is high. And in order to meet the high-low voltage withstand requirement, the product contact point rod or the auxiliary contact point rod needs to be subjected to dispensing isolation.

Disclosure of Invention

The invention mainly aims to provide a high-voltage sealing direct-current contactor with an auxiliary contact, which can solve the problems that a microswitch is arranged on the side surface of a main contact, the occupied space is large, the arc extinguishing magnetic steel space needs to be reduced, the arc extinguishing of the main contact is not facilitated, the on-off performance of a product is unstable, the manufacturing process is complicated, the contact resistance is large, and the cost is high. The product is in order to satisfy the withstand voltage requirement of high-low pressure, need the problem of keeping apart with product contact point pole or supplementary contact pole point gluing.

In order to achieve the purpose, the invention adopts the technical scheme that:

a high-pressure sealing direct current contactor with an auxiliary contact comprises a ceramic seat, wherein an auxiliary point rod and a contact point rod are fixedly connected to the ceramic seat, the ceramic seat is of a convex three-dimensional structure, a groove structure is arranged on the outer surface of the ceramic seat, arc extinguishing magnetic steel is arranged in the groove structure, a magnetic conductive support is sleeved on the ceramic seat, the arc extinguishing magnetic steel is arranged in the groove structure of the ceramic seat, the occupied space of the arc extinguishing magnetic steel is saved through the groove structure of the ceramic seat, and the magnetic conductive support sleeved on the ceramic seat is used for enhancing the effect of a magnetic field;

ceramic seat both sides fixed mounting has auxiliary point pole and contact point pole, the shape of ceramic seat is direct separates contact point pole portion and auxiliary point pole portion, and the outside need not to be glued for withstand voltage requirement point and keeps apart contact point pole and auxiliary point pole, the ceramic seat bottom is equipped with the shield cover, the ceramic seat bottom is connected with the shield cover through the connecting washer, shield cover bottom fixedly connected with push rod group part, be equipped with contact piece and supplementary reed in the push rod group part, contact point pole and contact piece point contact, the auxiliary point pole is contacted with supplementary reed point.

Preferably, including support, supplementary reed, working of plastics, push rod and contact piece in the push rod group part, support below fixedly connected with contact piece, the contact piece contacts with the contact point pole face, contact piece bottom fixedly connected with spring, the one end fixed mounting that the contact piece was kept away from to the spring has the working of plastics.

Preferably, an auxiliary reed is fixed in the middle of the plastic part, a silver contact is arranged on the auxiliary reed, the silver contact on the auxiliary reed is matched with the auxiliary point rod, an opening is formed in the center of the bottom of the plastic part, and a push rod is fixedly connected in the opening.

Compared with the prior art, the invention has the following beneficial effects:

1. this scheme is through replacing micro-gap switch for a reed, and the reed is placed in arc extinguishing space bottom, need not sacrifice arc extinguishing magnet steel space, and occupation space is little. The improvement of the auxiliary contact structure can solve the problems of easy scrap scraping, complex assembly process, large contact resistance and incapability of isolating strong current and weak current in the prior art; the device has the characteristics of simple and convenient assembly, capability of making the contact resistance small enough and capability of carrying larger load.

2. According to the scheme, the reed is placed in the central area and is controlled by the direct movement of the push rod group component, the response consistency of the main contact and the auxiliary contact is ensured, and the response time difference between the auxiliary contact and the main contact can be adjusted by adjusting the height of the reed.

Drawings

The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:

fig. 1 is an overall structural view of a high-pressure sealing dc contactor with an auxiliary contact;

fig. 2 is a schematic structural diagram of a push rod set of a high-pressure sealing direct current contactor with an auxiliary contact.

Reference numbers in the figures: 1-a ceramic base; 11-arc extinguishing magnetic steel; 12-a magnetically conductive support; 2-auxiliary point rod; 3-a contact point bar; 4-a shielding case; 5-connecting rings; 6-a push rod set component; 61-a scaffold; 62-auxiliary reed; 63-a plastic part; 64-a push rod; 7-a contact sheet; 8-spring.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described in detail with reference to the attached drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution to which the present invention relates.

According to the technical scheme of the invention, a plurality of alternative structural modes and implementation modes can be provided by a person with ordinary skill in the art without changing the essential spirit of the invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-2, a high-pressure sealed dc contactor with auxiliary contacts comprises a ceramic base 1, wherein the ceramic base 1 is fixedly connected with an auxiliary point rod 2 and a contact point rod 3, the ceramic base 1 is in a convex three-dimensional structure, the outer surface of the ceramic base 1 is provided with a groove structure, arc extinguishing magnetic steel 11 is arranged in the groove structure, the ceramic base 1 is sleeved with a magnetic conductive support 12, and the arc extinguishing magnetic steel 211 is arranged in the groove structure of the ceramic base 2.

1 both sides fixed mounting of ceramic seat has auxiliary point pole 2 and contact point pole 3, the shape of ceramic seat 1 is direct separates contact point pole 3 part and auxiliary point pole 2 parts, and the outside need not to be glued and keep apart contact point pole 3 and auxiliary point pole 2 for withstand voltage requirement, 1 bottom of ceramic seat is equipped with shield cover 4, 1 bottom of ceramic seat is connected with shield cover 4 through connecting ring 5, 4 bottom fixedly connected with push rod group parts 6 of shield cover, be equipped with contact piece 7 and supplementary reed 62 in the push rod group parts 6.

Specifically, the ceramic base 1 is formed by brazing each part, wherein the ceramic base 1 is convex, the contact part and the auxiliary contact part are directly separated by the ceramic base 1 in the shape, the contact rod 3 and the auxiliary contact rod 2 do not need to be glued and isolated for pressure resistance outside, electric arc is generated at the contact position of the contact rod 3 and the contact bridge 6, and the closer the arc extinguishing magnetic steel 11 is to the position, the larger the magnetic field is, the more the arc extinguishing is facilitated. In a reasonable range, the larger the magnetic steel is, the larger the magnetic field is, and the more arc extinction is facilitated. In addition, the manufacturing process of the scheme is simple, and if the auxiliary point rod 2 needs to be electrified with large current, the sectional area of the auxiliary reed 62 only needs to be properly adjusted; this scheme has under the condition of auxiliary contact at the product, makes arc extinguishing magnet steel 11 more nearly apart from the contact point pole, and occupation space is little, and arc extinguishing magnet steel 11 area is not influenced, effectively increases product arc extinguishing ability.

In this embodiment, the push rod set component 6 includes a support 61, an auxiliary spring 62, a plastic part 63, a push rod 64 and a contact piece 7, the contact piece 7 is fixedly connected to the lower side of the support 61, a spring 8 is fixedly connected to the bottom end of the contact piece 7, and the plastic part 63 is fixedly mounted at one end of the spring 8 far away from the contact piece.

An auxiliary reed 62 is fixed in the middle of the plastic part 63, a silver contact is arranged on the auxiliary reed 62, the silver contact on the auxiliary reed 62 is matched with the auxiliary point rod 2, an opening is formed in the center of the bottom of the plastic part 63, and a push rod 64 is fixedly connected in the opening.

Specifically, the coil is deenergized, the push rod assembly member moves downward, the contact piece 7 is disconnected from the contact point bar 3, the silver contact is used for reducing contact resistance, and due to the arrangement of the contact piece 7 and the contact point bar 3, when magnetic flux forms a magnetic circuit in the contact piece 7 and the contact point bar 3, the spring 8 resists against an electric repulsive force generated by the contact bridge and the contact point bar together with an electromagnetic attractive force generated by the contact point bar 3 and the contact piece 7.

In the invention, the ceramic seat 1 is convex, the contact part and the auxiliary contact part are directly separated by the ceramic seat 1 in the shape, the contact rod 3 and the auxiliary contact rod 2 are not needed to be separated by dispensing for the pressure-resistant requirement from the outside, so that the arc-extinguishing magnetic steel 11 is closer to the contact rod, the occupied space is small, the area of the arc-extinguishing magnetic steel 11 is not affected, the arc-extinguishing capacity of a product is effectively increased, electric arc is generated at the contact position of the contact rod 3 and the contact bridge 6, and the closer the arc-extinguishing magnetic steel 11 is to the position, the larger the magnetic field is, the more the arc-extinguishing is facilitated. In a reasonable range, the larger the magnetic steel is, the larger the magnetic field is, and the more arc extinction is facilitated. In addition, the manufacturing process of the scheme is simple, and if the auxiliary point rod 2 needs to be electrified with large current, the sectional area of the auxiliary reed 62 only needs to be properly adjusted; while the downward movement of the projection on the holder uses the silver contact for reducing the contact resistance, since the contact piece 7 and the contact point bar 3 are provided, when the magnetic flux forms a magnetic circuit in the contact piece 7 and the contact point bar 3, the spring 8 resists the electric repulsive force generated by the contact bridge and the contact point bar together with the electromagnetic attractive force generated by the contact point bar 3 and the contact piece 7.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.