WO2018205296A1 - 一种带有辅助触点的直流接触器 - Google Patents

一种带有辅助触点的直流接触器 Download PDF

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Publication number
WO2018205296A1
WO2018205296A1 PCT/CN2017/084754 CN2017084754W WO2018205296A1 WO 2018205296 A1 WO2018205296 A1 WO 2018205296A1 CN 2017084754 W CN2017084754 W CN 2017084754W WO 2018205296 A1 WO2018205296 A1 WO 2018205296A1
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WO
WIPO (PCT)
Prior art keywords
auxiliary
yoke
piece
shell
contactor
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PCT/CN2017/084754
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English (en)
French (fr)
Inventor
唐俊平
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东莞市三友联众电器有限公司
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Application filed by 东莞市三友联众电器有限公司 filed Critical 东莞市三友联众电器有限公司
Publication of WO2018205296A1 publication Critical patent/WO2018205296A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

Definitions

  • the invention relates to the field of contactors, and in particular to a DC contactor with an auxiliary contact.
  • the contactor is an "automatic switch” that uses a small current to control a large current. It functions as an automatic adjustment, safety protection, and conversion circuit in the circuit.
  • the DC contactor is a type of contactor and is mainly used in the DC circuit. In the actual use process of the DC contactor, it is often necessary to install a DC contactor on each of the positive and negative lines of the electrical product, which greatly increases the manufacturing cost of the electrical product, and also causes the structure of the electrical product to be complicated and bloated.
  • the object of the present invention is to provide a DC contactor with an auxiliary contact, which does not need to install a contactor on each of the positive and negative lines of the electrical product, requiring only one contact.
  • the device can meet the demand, reduce the manufacturing cost of the electrical product, simplify the structural design of the electrical product, and reduce the volume of the electrical product.
  • a DC contactor with an auxiliary contact of the present invention includes a yoke assembly, a fixed casing connected to the yoke assembly, an electromagnetic coil installed in the yoke assembly, and a sliding connection to the electromagnetic coil.
  • the fixed shell is provided with two main contacts spaced apart from each other and two auxiliary contacts spaced apart from each other, and one end of the main contact and the auxiliary contact protrudes into the fixed contact
  • the other end of the main contact and the auxiliary contact protrudes from the fixed shell
  • one end of the push rod penetrates the yoke assembly and protrudes into the fixed shell
  • the push rod is connected with a push piece located in the fixed shell, and the push piece is pushed
  • the fixed rod and the auxiliary moving piece are arranged, the fixed rod is slidably connected with the moving point block, and the pre-pressing spring is arranged between the pushing piece and the moving point block, and the moving point block is used for connecting and connecting the two main contacts, the auxiliary moving The chip is used to connect the two auxiliary contacts.
  • the push rod and the push piece are integrally molded, and the pre-press spring is sleeved on the outer side of the fixed rod.
  • the two ends of the preloading spring respectively abut the push piece and the moving point block;
  • the push piece is provided with a fixed column, the fixed column and the fixed rod are located on the same side of the push piece, and the auxiliary moving piece is mounted on the free end of the fixed column, the auxiliary moving piece
  • Two movable contacts are provided for abutting the two auxiliary contacts, respectively.
  • the DC contactor with the auxiliary contact further comprises a plastic shell, the yoke assembly and the fixed shell are all mounted in the plastic shell, and the fixed shell is made of ceramic material; the number of main contacts is four.
  • the two main contacts form a contact group, and the auxiliary contacts are provided with contact groups on both sides, and the main contacts and the auxiliary contacts protrude from the plastic shell.
  • the yoke assembly includes a yoke shell and a yoke plate mounted on the yoke shell, the yoke shell and the fixed shell are respectively located on two sides of the yoke plate, and the electromagnetic coil is accommodated in the yoke shell, pushing The rod penetrates the yoke iron plate; the outer side of the push rod is sleeved with a return spring, and the two ends of the return spring abut against the yoke plate and the armature respectively.
  • the DC contactor with the auxiliary contact further comprises a corrugated, kovable clamped between the yoke plate and the fixed shell, and the cleavage is used to seal the gap between the yoke plate and the fixed shell, and push
  • the sheets and yoke plates are located on both sides of the kovar.
  • the yoke plate is provided with a protection tube located in the yoke iron shell, the electromagnetic coil is sleeved on the outer side of the protection tube, and the armature is accommodated in the protection tube.
  • a sleeve spaced apart from the yoke plate is connected to the yoke shell, the electromagnetic coil is sleeved on the outer side of the sleeve, and the sleeve is sleeved on the outer side of the guard cylinder.
  • the yoke plate is provided with a limiting cylinder sleeved on the outer side of the push rod, the limiting cylinder is located in the yoke iron shell, the electromagnetic coil is sleeved on the outer side of the limiting cylinder, and the limiting cylinder is provided with a convex ring.
  • One end of the return spring abuts against the convex ring; the armature is provided with a limiting slot, and the limiting slot is recessed from a side of the armature close to the yoke plate, and the other end of the return spring abuts against the bottom wall of the limiting slot.
  • the push rod penetrates the armature
  • the push rod is provided with an annular groove
  • the outer side of the push rod is sleeved with a curved piece, the two ends of the curved piece are spaced apart, and the curved piece is protruded into the annular groove
  • the tab is clamped between the curved piece and the return spring.
  • a plurality of magnets are disposed between the fixed shell and the plastic shell, and the plurality of magnets are respectively located at a solid Set the sides of the shell.
  • the invention has the beneficial effects that the electromagnetic coil generates a magnetic field after being energized, and the magnetic field drives the armature to move upwards.
  • the armature moves, the point block and the auxiliary moving piece move upward together through the push piece, so that the moving point block and the auxiliary moving piece respectively conduct two.
  • Main contact and two auxiliary contacts in actual use, it is not necessary to install a contactor on each of the positive and negative lines of the electrical product, only one contactor is needed to meet the demand, reduce the manufacturing cost of the electrical product, and simplify the electrical product.
  • the structural design reduces the volume of electrical products.
  • Figure 1 is a schematic perspective view of the present invention
  • FIG. 2 is a schematic view showing the three-dimensional structure of the present invention after hiding the plastic shell;
  • Figure 3 is a schematic exploded view of the present invention.
  • FIG. 4 is a schematic perspective view showing the armature, the push rod, the pusher, the return spring, the limit cylinder, the fixed rod, the preload spring and the curved piece of the present invention.
  • a DC contactor with an auxiliary contact of the present invention comprises a yoke assembly 1, a fixed casing 2 connected to the yoke assembly 1, and an electromagnetic device installed in the yoke assembly 1.
  • a coil 3 an armature 4 slidably connected in the electromagnetic coil 3, and a push rod 5 connected to the armature 4
  • the fixed casing 2 is provided with two main contacts 6 spaced apart from each other and two auxiliary contacts 7 spaced apart from each other One end of the main contact 6 and the auxiliary contact 7 protrude into the fixed casing 2, and the other ends of the main contact 6 and the auxiliary contact 7 protrude from the fixed casing 2;
  • one end of the push rod 5 penetrates the yoke assembly 1 and protrude into the fixed casing 2
  • the push rod 5 is connected with a pusher 8 located in the fixed casing 2
  • the pusher 8 is provided with a fixed rod 9 and an auxiliary movable piece 11, and the fixed rod 9 is slidably connected with the moving point block 12
  • the pre-compression spring 13 is installed between the push piece 8 and the moving point block 12, and the preloading is performed.
  • the longitudinal direction of the spring 13 is the same as the sliding direction of the moving point block 12, the moving point block 12 is for connecting the two main contacts 6, and the auxiliary moving piece 11 is for connecting the two auxiliary contacts 7.
  • the preloading spring 13 causes the moving point block 12 to abut against the main contact 6 under the action of the elastic restoring force thereof, thereby avoiding the vibration or inadvertent contact of the DC contactor of the present invention.
  • the moving point block 12 is separated from the main contact 6; when actually used, it is not necessary to install a contactor on each of the positive line and the negative line of the electrical product, and only one contactor is needed to meet the demand, for example, Connecting the positive circuit of the electrical product to the two main contacts 6 and conducting The negative electrode line of the electrical product is connected to the two auxiliary contacts 7; the manufacturing cost of the electrical product is reduced, the structural design of the electrical product is simplified, and the volume of the electrical product is reduced.
  • the push rod 5 is made of a metal material, and the strength of the push rod 5 itself is increased.
  • the piece 8 is made of insulating plastic, and the push piece 8 is used to isolate the electrical conduction between the moving point block 12 and the push rod 5, and between the auxiliary moving piece 11 and the push rod 5, so as to avoid the push rod 5 to the two main contacts.
  • the push rod 5 is integrally molded with the push piece 8 (Insert Molding, also called insert molding), and the push rod 5 is also provided with the push piece 5
  • the reinforcing groove in the reinforced groove is recessed from the outer surface of the push rod 5, and the holding force between the push rod 5 and the push piece 8 is enhanced to prevent the push rod 5 and the push piece 8 from being separated from each other;
  • the preload spring 13 The sleeve is disposed on the outer side of the fixed rod 9, and the two ends of the preloading spring 13 abut on the push piece 8 and the moving point block 12 respectively;
  • the push piece 8 is provided with a fixing column 14, preferably, the fixing column 14 and the pushing piece 8 In a one-piece configuration, the fixing post 14 and the fixing rod 9 are located on the same side of the push piece 8, the auxiliary moving piece 11 is mounted on the free end of the fixing post 14, and the auxiliary moving piece 11 is provided for abutting the two auxiliary
  • the auxiliary piece 11 is in a state of being bent and deformed, and the elastic restoring force of the auxiliary piece 11 is used to ensure that the auxiliary piece 11 is stably abutted on the two auxiliary contacts 7 to avoid the vibration or inadvertentness of the DC contactor of the present invention.
  • the contact is caused to separate the auxiliary rotor 11 from the auxiliary contact 7.
  • the DC contactor with the auxiliary contact further comprises a plastic shell 15 , and the yoke assembly 1 and the fixed shell 2 are both mounted in the plastic shell 15 , and the fixed shell 2 is made of a ceramic material, and when actually used, when moving
  • the block 12 contacts or disconnects the two main contacts 6, when the auxiliary rotor 11 contacts or disconnects the two auxiliary contacts 7, an arc is generated, and the arc is extinguished by the ceramic to prolong the service life of the DC contactor.
  • the number of main contacts 6 is four, two main contacts 6 form one contact group, four main contacts 6 constitute two contact groups, and both sides of the auxiliary contacts 7 are provided.
  • the contact group that is, the two contact groups are respectively located on the left and right sides of the auxiliary contact 7, and the main contact 6 and the auxiliary contact 7 protrude from the plastic case 15.
  • the yoke assembly 1 includes a yoke shell 16 and a yoke plate 17 mounted on the yoke shell 16, the yoke shell 16 is substantially U-shaped, the yoke plate 17 is substantially rectangular, and the yoke plate 17 is The ends are respectively connected to the two ends of the yoke shell 16, the yoke shell 16 and the fixed shell 2 are respectively located on the left and right sides of the yoke plate 17, the electromagnetic coil 3 is accommodated in the yoke shell 16, and one end of the push rod 5 penetrates the yoke The plate 17 protrudes into the fixed casing 2; The outer side of the rod 5 is sleeved with a return spring 18, and the return spring 18 is located in the yoke shell 16, and the two ends of the return spring 18 abut against the yoke plate 17 and the armature 4, respectively.
  • the electromagnetic coil 3 When the electromagnetic coil 3 is energized, a magnetic field is generated, the magnetic field drives the armature 4 to move upward, and the armature 4 drives the moving point block 12 and the auxiliary moving piece 11 to move through the push rod 5 and the push piece 8, so that the movable contact is connected to the two main contacts. 6.
  • the auxiliary moving piece 11 is connected to open the two auxiliary contacts 7, and the length of the return spring 18 is compressed; when the electromagnetic coil 3 is powered off, the magnetic field disappears, and the return spring 18 drives the armature under the action of its elastic restoring force. 4 The reverse movement is restored to the original position, so that the moving point block 12 is separated from the main contact 6, and the auxiliary moving piece 11 is separated from the auxiliary contact 7.
  • the DC contactor with the auxiliary contact further includes a decua 19, which is sandwiched between the yoke plate 17 and the fixed casing 2, and the cleavage 19 is used to seal between the yoke plate 17 and the fixed casing 2.
  • the gap between the pusher 8 and the yoke plate 17 is located on the left and right sides of the crater 19, respectively.
  • the yoke plate 17 is provided with a protection tube 21 located in the yoke shell 16 .
  • the protection tube 21 is substantially hollow and cylindrical.
  • the protection tube 21 is integrally formed by drawing, that is, the protection tube 21 is stretched by drawing.
  • the protective tube 21 has an integrated structure, ensures the consistency of the structure of the protective tube 21, and enhances the performance of the protective tube 21; the electromagnetic coil 3 is sleeved on the outer side of the protective tube 21, and the armature 4 is accommodated in the protective tube 21. .
  • the mutual cooperation of the fixed casing 2, the cuttable 19, the yoke plate 17, and the protective cylinder 21 is used to make the armature 4, the push rod 5, the pusher 8, the fixed rod 9, and the preload spring 13
  • the contact point of the moving point block 12, the auxiliary moving piece 11, the contact of the main contact 6, and the contact of the auxiliary contact 7 are all located in a closed space, and then the space is evacuated to prevent the armature 4, the push rod 5,
  • the contact portions of the pusher 8, the fixed rod 9, the preload spring 13, the moving point block 12, the auxiliary moving piece 11, the contact of the main contact 6, and the auxiliary contact 7 are subjected to oxidative corrosion, and also prevent the arc after ionization.
  • the air has a functional influence on the contact between the armature 4, the push rod 5, the pusher 8, the fixed rod 9, the preload spring 13, the moving point block 12, the auxiliary moving piece 11, the contact of the main contact 6, and the auxiliary contact 7. Improve the performance of the DC contactor and extend the service life of the DC contactor.
  • a sleeve 22 spaced apart from the yoke plate 17 is connected to the yoke shell 16 , and the sleeve 22 is hollow In the cylindrical shape, the sleeve 22 is located in the yoke shell 16, the electromagnetic coil 3 is sleeved on the outer side of the sleeve 22, and the sleeve 22 is sleeved on the outer side of the shield cylinder 21.
  • the yoke iron shell 16, the yoke iron plate 17, and the sleeve 22 together form the yoke assembly 1, ensuring that both ends of the shroud 21 are in contact with the yoke assembly 1, and after the electromagnetic coil 3 is energized, the yoke assembly 1 and the shroud 21 are caused.
  • the closed loop is formed, and the magnetic induction line generated by the electromagnetic coil 3 is closed by the closed loop, and the energy loss of the magnetic field generated by the electromagnetic coil 3 is reduced, thereby enhancing the magnetic force generated by the electromagnetic coil 3, and ensuring that the armature 4 has sufficient driving force.
  • the yoke plate 17 is provided with a limiting cylinder 23 sleeved on the outside of the push rod 5 , the limiting cylinder 23 is located in the yoke shell 16 , and the electromagnetic coil 3 is sleeved in the limiting cylinder 23, the limiting cylinder 23 is provided with a convex ring 24, and the convex ring 24 is integrally protruded from the outer surface of the limiting cylinder 23, and one end of the return spring 18 abuts on the convex ring 24; the installation of the return spring 18 is facilitated.
  • the yoke plate 17 is prevented from being damaged by the return spring 18 directly contacting the yoke plate 17; the armature 4 is provided with a finite slot 25, and the limiting slot 25 is recessed from the side of the armature 4 near the yoke plate 17. The other end of the return spring 18 abuts against the bottom wall of the limiting slot 25; the return spring 18 is received by the limiting slot 25 to facilitate quick installation of the return spring 18.
  • the push rod 5 extends through the armature 4, and the push rod 5 is provided with an annular groove.
  • the annular groove is recessed from the outer surface of the push rod 5.
  • the outer side of the push rod 5 is sleeved with a curved piece 26, and the curved piece 26
  • the semicircular shape is substantially semi-circular, and the two ends of the curved piece 26 are spaced apart. The distance between the two ends of the curved piece 26 is smaller than the diameter of the push rod 5.
  • the curved piece 26 is provided with a protrusion protruding into the annular groove.
  • the push rod 5 is squeezed into the curved piece 26 via the gap between the two ends of the curved piece 26, and the convex piece is caught in the annular groove of the push rod 5, effectively preventing the curved piece 26 and the push rod 5 from each other.
  • the armature 4 is clamped between the curved piece 26 and the return spring 18, and the armature 4 is tightly abutted against the curved piece 26 by the return spring 18 to further prevent the curved piece 26 from falling off the push rod 5.
  • one end of the fixing rod 9 away from the pushing piece 8 passes through the moving point block 12, and the fixing rod 9 is also provided with an annular groove, and the outer side of the fixing rod 9 is also provided with a curved piece 26, and the moving point block 12 is clamped at the preloading
  • the spring 13 is between the curved piece 26.
  • a plurality of magnets 27 are disposed between the fixed shell 2 and the plastic shell 15, and the plurality of magnets 27 are respectively located The left and right sides of the fixed case 2 are fixed.
  • the magnetic field generated by the magnet 27 is used for arc extinguishing.
  • the arc is offset by the arc generated between the moving point block 12 and the main contact 6 in the fixed casing 2, and the auxiliary moving piece 11 and the auxiliary contact are The arc between points 7 becomes longer, and the voltage of the arc becomes higher.
  • the arc voltage is higher than the supply voltage between the moving point block 12 and the main contact 6, between the auxiliary moving piece 11 and the auxiliary contact 7
  • the arc will automatically go out.
  • a support frame is mounted between the plastic case 15 and the fixed case 2, and a plurality of magnets 27 are mounted on the support frame.

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  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

一种带有辅助触点的直流接触器，涉及接触器技术领域。包括轭铁组件（1）、与轭铁组件（1）连接的固定壳（2）、装设于轭铁组件（1）内的电磁线圈（3）、滑动连接于电磁线圈（3）内的衔铁（4）、与衔铁（4）连接的推杆（5）；固定壳（2）装设有两个主触点（6）及两个辅助触点（7）；推杆（5）连接有推片（8），推片（8）装设有固定杆（9）及辅助动片（11），固定杆（9）滑动连接有动点块（12）；电磁线圈（3）通电后产生磁场，驱动衔铁（4）向上运动，衔铁（4）运动时经由推片（8）连带动点块（12）、辅助动片（11）一起运动，使得动点块（12）、辅助动片（11）分别导通两个主触点（6）、两个辅助触点（7）；实际使用时，无需在电器产品的正极线路与负极线路各安装一个接触器，仅需一个接触器即可满足需求，降低电器产品的制造成本，简化电器产品的结构设计，缩小电器产品的体积。

Description

一种带有辅助触点的直流接触器 技术领域
本发明涉及接触器技术领域，尤其公开了一种带有辅助触点的直流接触器。
背景技术
接触器是利用较小的电流控制较大电流的“自动开关”，在电路中起着自动调节、安全保护、转换电路等作用，直流接触器作为接触器的一个类型，主要应用在直流回路中，在直流接触器的实际使用过程，常常需要在电器产品的正极线路与负极线路各安装一个直流接触器，大大增加电器产品的制造成本，同时也会导致电器产品的结构复杂、体积臃肿。
发明内容
为了克服现有技术中存在的缺点和不足，本发明的目的在于提供一种带有辅助触点的直流接触器，无需在电器产品的正极线路与负极线路各安装一个接触器，仅需一个接触器即可满足需求，降低电器产品的制造成本，简化电器产品的结构设计，缩小电器产品的体积。
为实现上述目的，本发明的一种带有辅助触点的直流接触器，包括轭铁组件、与轭铁组件连接的固定壳、装设于轭铁组件内的电磁线圈、滑动连接于电磁线圈内的衔铁、与衔铁连接的推杆；所述固定壳装设有彼此间隔的两个主触点及彼此间隔的两个辅助触点，主触点、辅助触点的一端均突伸入固定壳内，主触点、辅助触点的另一端均突伸出固定壳；推杆的一端贯穿轭铁组件并突伸入固定壳内，推杆连接有位于固定壳内的推片，推片装设有固定杆及辅助动片，固定杆滑动连接有动点块，推片与动点块之间装设有预压弹簧，动点块用于连接导通两个主触点，辅助动片用于连接导通两个辅助触点。
优选地，所述推杆与推片注塑一体成型，预压弹簧套设于固定杆的外侧， 预压弹簧的两端分别抵接推片及动点块；推片设有固定柱，固定柱、固定杆位于推片的同一侧，辅助动片装设于固定柱的自由端，辅助动片设有分别用于抵接两个辅助触点的两个动触点。
优选地，所述带有辅助触点的直流接触器还包括塑胶壳，轭铁组件及固定壳均装设于塑胶壳内，固定壳采用陶瓷材料制成；主触点的数量为四个，两个主触点组成一个触点组，辅助触点的两侧均设有触点组，主触点、辅助触点均突伸出塑胶壳。
优选地，所述轭铁组件包括轭铁壳及装设于轭铁壳的轭铁板，轭铁壳、固定壳分别位于轭铁板的两侧，电磁线圈容设于轭铁壳内，推杆贯穿轭铁板；推杆的外侧套设有复位弹簧，复位弹簧的两端分别抵接轭铁板及衔铁。
优选地，所述带有辅助触点的直流接触器还包括可伐，可伐夹持于轭铁板与固定壳之间，可伐用于密封轭铁板与固定壳之间的间隙，推片、轭铁板分别位于可伐的两侧。
优选地，所述轭铁板装设有位于轭铁壳内的防护筒，电磁线圈套设于防护筒的外侧，衔铁容设于防护筒内。
优选地，所述轭铁壳内连接有与轭铁板间隔设置的套筒，电磁线圈套设于套筒的外侧，套筒套设于防护筒的外侧。
优选地，所述轭铁板装设有套设于推杆外侧的限位筒，限位筒位于轭铁壳内，电磁线圈套设于限位筒的外侧，限位筒设有凸环，复位弹簧的一端抵接于凸环；衔铁设有限位槽，限位槽自衔铁靠近轭铁板的一侧凹设而成，复位弹簧的另一端抵接于限位槽的底壁。
优选地，所述推杆贯穿衔铁，推杆设有环形凹槽，推杆的外侧套设有弧形片，弧形片的两端间隔设置，弧形片设有突伸入环形凹槽内的凸片，衔铁夹持于弧形片与复位弹簧之间。
优选地，所述固定壳与塑胶壳之间装设有多个磁铁，多个磁铁分别位于固 定壳的两侧。
本发明的有益效果：电磁线圈通电后产生磁场，磁场驱动衔铁向上运动，衔铁运动时经由推片连带动点块、辅助动片一起向上运动，使得动点块、辅助动片分别导通两个主触点、两个辅助触点；实际使用时，无需在电器产品的正极线路与负极线路各安装一个接触器，仅需一个接触器即可满足需求，降低电器产品的制造成本，简化电器产品的结构设计，缩小电器产品的体积。
附图说明
图1为本发明的立体结构示意图；
图2为本发明隐藏塑胶壳后的立体结构示意图；
图3为本发明的分解结构示意图；
图4为本发明的衔铁、推杆、推片、复位弹簧、限位筒、固定杆、预压弹簧及弧形片的立体结构示意图。
附图标记包括：
1—轭铁组件   2—固定壳     3—电磁线圈
4—衔铁       5—推杆       6—主触点
7—辅助触点   8—推片       9—固定杆
11—辅助动片  12—动点块    13—预压弹簧
14—固定柱    15—塑胶壳    16—轭铁壳
17—轭铁板    18—复位弹簧  19—可伐
21—防护筒    22—套筒      23—限位筒
24—凸环      25—限位槽    26—弧形片
27—磁铁。
具体实施方式
为了便于本领域技术人员的理解，下面结合实施例及附图对本发明作进一步的说明，实施方式提及的内容并非对本发明的限定。
请参阅图1至图3，本发明的一种带有辅助触点的直流接触器，包括轭铁组件1、与轭铁组件1连接的固定壳2、装设在轭铁组件1内的电磁线圈3、滑动连接在电磁线圈3内的衔铁4、与衔铁4连接的推杆5；所述固定壳2装设有彼此间隔的两个主触点6及彼此间隔的两个辅助触点7，主触点6、辅助触点7的一端均突伸入固定壳2内，主触点6、辅助触点7的另一端均突伸出固定壳2；推杆5的一端贯穿轭铁组件1并突伸入固定壳2内，推杆5连接有位于固定壳2内的推片8，推片8装设有固定杆9及辅助动片11，固定杆9滑动连接有动点块12，本实施例中，动点块12为条状的导电平板，动点块12套设在固定杆9的外侧，推片8与动点块12之间装设有预压弹簧13，预压弹簧13的长度方向与动点块12的滑动方向相同，动点块12用于连接导通两个主触点6，辅助动片11用于连接导通两个辅助触点7。
电磁线圈3通电后产生磁场，磁场驱动衔铁4向上运动，衔铁4运动时连带推杆5一起运动，推杆5运动时连同推片8一起运动，推片8运动时连带动点块12、辅助动片11一起向上运动，使得动点块12连接导通两个主触点6、辅助动片11连接导通两个辅助触点7；当动点块12接触两个主触点6后，推片8连带动点块12继续移动，此时由于主触点6抵接动点块12，动点块12会相对固定杆9滑动，使得预压弹簧13的长度被压缩，当推片8与动点块12停止移动后，预压弹簧13在自身弹性回复力的作用下使得动点块12紧紧抵接在主触点6上，避免本发明的直流接触器因振动或不经意的碰触而致使动点块12与主触点6分离；当实际使用时，无需在电器产品的正极线路与负极线路各安装一个接触器，仅需一个接触器即可满足需求，例如，此时可以将电器产品的正极线路与两个主触点6连接导通，将电器产品的负极线路与两个辅助触点7连接导通；降低电器产品的制造成本，简化电器产品的结构设计，缩小电器产品的体积。
本实施例中，所述推杆5采用金属材料制成，增加推杆5自身的强度，推 片8采用绝缘塑料制成，利用推片8隔离动点块12与推杆5之间、辅助动片11与推杆5之间的电性导通，避免推杆5对两个主触点6的导通以及两个辅助触点7的导通造成干扰；优选地，推杆5与推片8注塑一体成型(Insert Molding，又称镶埋成型)，推杆5还设置有位于推片8内的加固槽，加固槽自推杆5的外表面凹设而成，增强推杆5与推片8之间的卡持力，防止推杆5与推片8彼此分离；预压弹簧13套设在固定杆9的外侧，预压弹簧13的两端分别抵接在推片8上及动点块12上；推片8设置有固定柱14，优选地，固定柱14与推片8为一体式构造，固定柱14、固定杆9位于推片8的同一侧，辅助动片11装设在固定柱14的自由端上，辅助动片11设置有分别用于抵接两个辅助触点7的两个动触点；优选地，辅助动片11为弹性片，当衔铁4经由推杆5、推片8驱动辅助动片11连接导通两个辅助触点7后，辅助动片11处于弯折变形状态，利用辅助动片11自身的弹性回复力确保辅助动片11稳稳抵接在两个辅助触点7上，避免本发明的直流接触器因振动或不经意的碰触而致使辅助动片11与辅助触点7分离。
所述带有辅助触点的直流接触器还包括塑胶壳15，轭铁组件1及固定壳2均装设在塑胶壳15内，固定壳2采用陶瓷材料制成，实际使用时，当动点块12接触或断开两个主触点6时、辅助动片11接触或断开两个辅助触点7时，会产生电弧，利用陶瓷进行灭弧，延长直流接触器的使用寿命。本实施例中，主触点6的数量为四个，两个主触点6组成一个触点组，四个主触点6构成两个触点组，辅助触点7的两侧均设有触点组，即两个触点组分别位于辅助触点7的左右两侧，主触点6、辅助触点7均突伸出塑胶壳15。
所述轭铁组件1包括轭铁壳16及装设在轭铁壳16上的轭铁板17，轭铁壳16大致呈U型，轭铁板17大致为矩形平板，轭铁板17的两端分别连接轭铁壳16的两端，轭铁壳16、固定壳2分别位于轭铁板17的左右两侧，电磁线圈3容设在轭铁壳16内，推杆5的一端贯穿轭铁板17并突伸入固定壳2内；推 杆5的外侧套设有复位弹簧18，复位弹簧18位于轭铁壳16内，复位弹簧18的两端分别抵接在轭铁板17上及衔铁4上。当电磁线圈3通电后产生磁场，磁场驱动衔铁4向上运动，衔铁4经由推杆5、推片8驱动动点块12及辅助动片11移动，使得动触点连接导通两个主触点6、辅助动片11连接导通两个辅助触点7，此时复位弹簧18的长度被压缩；当电磁线圈3断电后，磁场消失，复位弹簧18在自身弹性回复力的作用下驱动衔铁4反向移动恢复原位，使得动点块12与主触点6分离、辅助动片11与辅助触点7分离。
所述带有辅助触点的直流接触器还包括可伐19，可伐19夹持在轭铁板17与固定壳2之间，可伐19用于密封轭铁板17与固定壳2之间的间隙，推片8、轭铁板17分别位于可伐19的左右两侧。
所述轭铁板17装设有位于轭铁壳16内的防护筒21，防护筒21大致呈中空的圆柱状，防护筒21采用抽引方式一体成型，即防护筒21通过抽引拉伸的方式制成，防护筒21为一体式构造，确保防护筒21构造的一致性，增强防护筒21的使用性能；电磁线圈3套设在防护筒21的外侧，衔铁4容设在防护筒21内。
在直流接触器的使用过程中，利用固定壳2、可伐19、轭铁板17及防护筒21的相互配合，使得衔铁4、推杆5、推片8、固定杆9、预压弹簧13、动点块12、辅助动片11、主触点6的接触处及辅助触点7的接触处均位于一个封闭的空间内，然后对该空间进行抽真空，防止衔铁4、推杆5、推片8、固定杆9、预压弹簧13、动点块12、辅助动片11、主触点6的接触处及辅助触点7的接触处受到氧化腐蚀，同时也防止经电弧电离后的空气对衔铁4、推杆5、推片8、固定杆9、预压弹簧13、动点块12、辅助动片11、主触点6的接触处及辅助触点7的接触处造成功能影响，提升直流接触器的使用性能，延长直流接触器的使用寿命。
所述轭铁壳16内连接有与轭铁板17间隔设置的套筒22，套筒22为中空 的圆柱状，套筒22位于轭铁壳16内，电磁线圈3套设在套筒22的外侧，套筒22套设在防护筒21的外侧。轭铁壳16、轭铁板17及套筒22共同组成轭铁组件1，确保防护筒21的两端均接触轭铁组件1，待电磁线圈3通电后，使得轭铁组件1与防护筒21形成闭环，利用闭环束缚电磁线圈3产生的磁感线，降低电磁线圈3产生的磁场的能量损耗，从而增强电磁线圈3产生的磁性力，确保衔铁4具有足够的驱动力。
请参阅图1至图4，所述轭铁板17装设有套设在推杆5外侧的限位筒23，限位筒23位于轭铁壳16内，电磁线圈3套设在限位筒23的外侧，限位筒23设有凸环24，凸环24自限位筒23的外表面一体凸设而成，复位弹簧18的一端抵接在凸环24上；便于复位弹簧18的安装，同时也避免因复位弹簧18直接抵接在轭铁板17上对轭铁板17造成损伤；衔铁4上设置有限位槽25，限位槽25自衔铁4靠近轭铁板17的一侧凹设而成，复位弹簧18的另一端抵接在限位槽25的底壁上；利用限位槽25收容复位弹簧18，便于复位弹簧18快速安装。
所述推杆5贯穿衔铁4，推杆5设有环形凹槽，环形凹槽自推杆5的外表面凹设而成，推杆5的外侧套设有弧形片26，弧形片26大致为半圆形，弧形片26的两端间隔设置，弧形片26两端之间的距离小于推杆5的直径，弧形片26设有突伸入环形凹槽内的凸片，组装时，将推杆5经由弧形片26两端之间的间隙挤入弧形片26内，凸片卡入推杆5的环形凹槽中，有效防止弧形片26与推杆5彼此分离；衔铁4夹持在弧形片26与复位弹簧18之间，利用复位弹簧18将衔铁4紧紧抵接在弧形片26上，进一步防止弧形片26从推杆5上脱落。优选地，固定杆9远离推片8的一端贯穿动点块12，固定杆9同样设有环形凹槽，固定杆9外侧同样套设有弧形片26，动点块12夹持在预压弹簧13与弧形片26之间。
所述固定壳2与塑胶壳15之间装设有多个磁铁27，多个磁铁27分别位于 固定壳2的左右两侧。利用磁铁27产生的磁场进行灭弧，在磁场作用下，电弧的偏移会使产生在固定壳2内动点块12与主触点6之间的电弧变长、辅助动片11与辅助触点7之间的电弧变长，电弧的电压就会变高，当电弧电压高于动点块12与主触点6之间的供电电压时、辅助动片11与辅助触点7之间的供电电压时，电弧就会自动熄灭。优选地，塑胶壳15与固定壳2之间安装有支撑架，多个磁铁27均装设在支撑架上。
以上内容仅为本发明的较佳实施例，对于本领域的普通技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种带有辅助触点的直流接触器，包括轭铁组件、与轭铁组件连接的固定壳、装设于轭铁组件内的电磁线圈、滑动连接于电磁线圈内的衔铁、与衔铁连接的推杆；其特征在于：所述固定壳装设有彼此间隔的两个主触点及彼此间隔的两个辅助触点，主触点、辅助触点的一端均突伸入固定壳内，主触点、辅助触点的另一端均突伸出固定壳；推杆的一端贯穿轭铁组件并突伸入固定壳内，推杆连接有位于固定壳内的推片，推片装设有固定杆及辅助动片，固定杆滑动连接有动点块，推片与动点块之间装设有预压弹簧，动点块用于连接导通两个主触点，辅助动片用于连接导通两个辅助触点。
  2. 根据权利要求1所述的带有辅助触点的直流接触器，其特征在于：所述推杆与推片注塑一体成型，预压弹簧套设于固定杆的外侧，预压弹簧的两端分别抵接推片及动点块；推片设有固定柱，固定柱、固定杆位于推片的同一侧，辅助动片装设于固定柱的自由端，辅助动片设有分别用于抵接两个辅助触点的两个动触点。
  3. 根据权利要求1所述的带有辅助触点的直流接触器，其特征在于：所述带有辅助触点的直流接触器还包括塑胶壳，轭铁组件及固定壳均装设于塑胶壳内，固定壳采用陶瓷材料制成；主触点的数量为四个，两个主触点组成一个触点组，辅助触点的两侧均设有触点组，主触点、辅助触点均突伸出塑胶壳。
  4. 根据权利要求1所述的带有辅助触点的直流接触器，其特征在于：所述轭铁组件包括轭铁壳及装设于轭铁壳的轭铁板，轭铁壳、固定壳分别位于轭铁板的两侧，电磁线圈容设于轭铁壳内，推杆贯穿轭铁板；推杆的外侧套设有复位弹簧，复位弹簧的两端分别抵接轭铁板及衔铁。
  5. 根据权利要求4所述的带有辅助触点的直流接触器，其特征在于：所述带有辅助触点的直流接触器还包括可伐，可伐夹持于轭铁板与固定壳之间，可伐用于密封轭铁板与固定壳之间的间隙，推片、轭铁板分别位于可伐的两侧。
  6. 根据权利要求5所述的带有辅助触点的直流接触器，其特征在于：所述轭铁板装设有位于轭铁壳内的防护筒，电磁线圈套设于防护筒的外侧，衔铁容设于防护筒内。
  7. 根据权利要求6所述的带有辅助触点的直流接触器，其特征在于：所述轭铁壳内连接有与轭铁板间隔设置的套筒，电磁线圈套设于套筒的外侧，套筒套设于防护筒的外侧。
  8. 根据权利要求4所述的带有辅助触点的直流接触器，其特征在于：所述轭铁板装设有套设于推杆外侧的限位筒，限位筒位于轭铁壳内，电磁线圈套设于限位筒的外侧，限位筒设有凸环，复位弹簧的一端抵接于凸环；衔铁设有限位槽，限位槽自衔铁靠近轭铁板的一侧凹设而成，复位弹簧的另一端抵接于限位槽的底壁。
  9. 根据权利要求4所述的带有辅助触点的直流接触器，其特征在于：所述推杆贯穿衔铁，推杆设有环形凹槽，推杆的外侧套设有弧形片，弧形片的两端间隔设置，弧形片设有突伸入环形凹槽内的凸片，衔铁夹持于弧形片与复位弹簧之间。
  10. 根据权利要求3所述的带有辅助触点的直流接触器，其特征在于：所述固定壳与塑胶壳之间装设有多个磁铁，多个磁铁分别位于固定壳的两侧。
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