WO2019105383A1 - 继电器 - Google Patents

继电器 Download PDF

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Publication number
WO2019105383A1
WO2019105383A1 PCT/CN2018/117904 CN2018117904W WO2019105383A1 WO 2019105383 A1 WO2019105383 A1 WO 2019105383A1 CN 2018117904 W CN2018117904 W CN 2018117904W WO 2019105383 A1 WO2019105383 A1 WO 2019105383A1
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WO
WIPO (PCT)
Prior art keywords
movable contact
contact plate
drive shaft
contact
movable
Prior art date
Application number
PCT/CN2018/117904
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English (en)
French (fr)
Inventor
姚保同
陆涛
黄彩丽
戴湘豫
刘斯源
汪鲁建
Original Assignee
比亚迪股份有限公司
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Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2019105383A1 publication Critical patent/WO2019105383A1/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

Definitions

  • the present application relates to the field of electrical appliances, and in particular, to a relay.
  • the relay adopts a pair of contacts (one for each of the moving and stationary contacts) or one set of contacts (two static contacts and one movable contact), and the movable contact directly contacts the static contact when the relay is engaged Contact, due to the large pressure difference between the moving contact and the static contact, the contact ablation is severe, the contact performance of the relay is reduced, and the electrical life is reduced.
  • the present application is intended to address at least one of the technical problems existing in the prior art. To this end, the present application proposes a relay having the advantages of simple structure and stable performance.
  • a relay includes: a housing defining a cavity therein; a drive shaft, one end of the drive shaft extending into the cavity, the drive shaft being opposite to the housing Moving; a static contact, the static contact is disposed on the housing; a movable contact assembly, the movable contact assembly is disposed at the one end of the drive shaft, and the movable contact assembly includes a first a movable contact plate and a second movable contact plate, wherein the first movable contact plate is movable relative to the driving shaft, and a resistance value of the first movable contact plate is greater than a resistance value of the second movable contact plate, a first elastic component is disposed between the first movable contact plate and the second movable contact plate, and an electrical gap between the first movable contact plate and the static contact is smaller than the second movable contact plate and the An electrical gap between the stationary contacts, the first movable contact plate first contacts the stationary contact relative to the second movable contact plate when the drive shaft moves in
  • the first movable contact plate and the second movable contact plate can be sequentially in contact with the static contact, and, due to the first dynamic touch
  • the resistance of the plate is greater than the resistance of the second movable contact plate, and the current flowing through the static contact and the first movable contact plate is small, thereby effectively preventing adhesion and erosion between the first movable contact plate and the static contact.
  • the first dynamic touch panel and the second dynamic touch panel are sequentially spaced apart in an axial direction of the drive shaft away from the static contact
  • One side surface facing the movable contact assembly has a stepped surface including first and second contacts sequentially connected in a direction away from the stationary contact in an axial direction of the drive shaft And wherein the first movable contact plate is adapted to be in contact with the first contact surface, and the second movable contact plate is adapted to be in contact with the second contact surface.
  • the first contact surface and the second contact surface are formed as planes, respectively.
  • a connecting surface is formed between the first contact surface and the second contact surface, and the connecting surface is configured to face away from the static contact along an axial direction of the driving shaft. The direction extends obliquely away from the central axis of the drive shaft.
  • the first elastic component includes a first elastic component, and the first elastic component is sleeved on the driving shaft, and two ends of the first elastic component are respectively associated with the first A movable contact plate and the second movable contact plate are stopped.
  • the first elastic component includes a first elastic component and a first fixing component, the first elastic component is sleeved on the driving shaft, and the first fixing component is the first a fixing member is mounted on the driving shaft and located at an end of the first elastic member adjacent to the second movable contact plate; an upper end of the first elastic member is abutted against the first movable contact plate, The lower end of the first elastic member is abutted against the first fixing member.
  • an end of the second movable contact plate remote from the static contact is provided with a second elastic component
  • the second elastic component includes a second elastic component and a second fixing component
  • the second fixing member is locked on the driving shaft, and two ends of the second elastic member respectively abut against the second movable contact plate and the second fixing member.
  • the other end of the drive shaft is provided with a magnetic member and a limiting member, and a third elastic member is disposed between the magnetic member and the limiting member, and the third elastic member Both ends of the two are respectively abutted against the magnetic member and the limiting member.
  • At least one of the limiting member and the magnetic member forms a limiting hole, and the third elastic member is located in the limiting hole.
  • a first insulating member is disposed between the first movable contact plate and the driving shaft, the first insulating member is formed into an annular structure, and the first insulating member is formed with a first a limiting slot, the first movable contact plate is installed in the first limiting slot;
  • a second insulating member is disposed between the second movable contact plate and the driving shaft, and the second insulating member is Formed as a ring structure, the second insulating member is formed with a second limiting slot, and the second movable contact plate is installed in the second limiting slot.
  • one end of the drive shaft has a stop, and one end of the movable contact assembly abuts the stop.
  • FIG. 1 is a schematic structural view of a relay according to an embodiment of the present application.
  • Figure 2 is a partial enlarged view of a portion A circled in Figure 1;
  • FIG. 3 is a partial structural schematic view of a relay according to an embodiment of the present application.
  • FIG. 4 is a schematic structural view of a relay according to an embodiment of the present application.
  • Figure 5 is a partial enlarged view of a portion B circled in Figure 4.
  • FIG. 6 is a schematic structural diagram of a relay according to an embodiment of the present application, in which neither the first movable contact plate nor the second movable contact plate is in contact with the static contact;
  • Figure 7 is a partial enlarged view of a portion C circled in Figure 6;
  • FIG. 8 is a schematic structural view of a relay according to an embodiment of the present application, wherein a first movable contact plate is in contact with a static contact, and a second movable contact plate is not in contact with a static contact;
  • Figure 9 is a partial enlarged view of a portion D circled in Figure 8.
  • FIG. 10 is a schematic structural view of a relay according to an embodiment of the present application, wherein the first movable contact plate and the second movable contact plate are both in contact with the stationary contact;
  • Figure 11 is a partial enlarged view of the portion E circled in Figure 10;
  • FIG. 12 is a partial structural schematic view of a relay according to an embodiment of the present application.
  • FIG. 13 is a partial structural schematic view of a relay according to an embodiment of the present application.
  • Static contact 30 stepped surface 310, first contact surface 311, second contact surface 312, connection surface 313,
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.
  • a relay 100 in accordance with an embodiment of the present application is described below with reference to FIGS.
  • the relay 100 includes a housing 10, a drive shaft 20, a stationary contact 30, and a movable contact assembly 40.
  • the cavity 10 is defined in the housing 10, whereby the movable contact assembly 40 can be disposed in the cavity 110, which is advantageous for improving the sealing performance and waterproof and dustproof performance of the relay 100.
  • One end of the drive shaft 20 extends into the cavity 110, the drive shaft 20 is movable relative to the housing 10, the stationary contact 30 is disposed on the housing 10, and the movable contact assembly 40 is disposed at one end of the drive shaft 20.
  • the movable contact assembly 40 can be moved to open or close the movable contact assembly 40 and the stationary contact 30 to achieve the opening or closing of the relay 100.
  • the movable contact assembly 40 includes a first movable contact plate 410 and a second movable contact plate 420.
  • the first movable contact plate 410 is movable relative to the driving shaft 20, and the resistance value of the first movable contact plate 410 is greater than the second movable contact plate 420.
  • the first elastic component 430 is disposed between the first movable contact plate 410 and the second movable contact plate 420.
  • the electrical gap between the first movable contact plate 410 and the static contact 30 is smaller than the second movable contact plate 420.
  • the electrical gap between the stationary contact 30 and the stationary contact 30 is first contacted with the stationary contact 30 relative to the second movable contact plate 420 as the drive shaft 20 moves toward the stationary contact 30.
  • the gap between the first movable contact plate 410 and the static contact 30 is smaller than the gap between the second movable contact plate 420 and the stationary contact 30. . Therefore, the first movable contact plate 410 is first in contact with the stationary contact 30, and when the drive shaft 20 continues to move, the first elastic component 430 between the first movable contact plate 410 and the second movable contact plate 420 is pressed to make the first The second movable contact plate 420 is in contact with the stationary contact 30.
  • the resistance value of the first movable contact plate 410 is greater than the resistance value of the second movable contact plate 420, and the current flowing between the static contact 30 and the first movable contact plate 410 when the first movable contact plate 410 is in contact with the stationary contact 30 Relatively small, adhesion and erosion of the first movable contact 410 and the stationary contact 30 can be prevented.
  • the second movable contact plate 420 when the second movable contact plate 420 is in contact with the stationary contact 30, since the first movable contact plate 410 is already in communication with the stationary contact 30, the static contact 30 and the second movable contact plate 420 are lowered.
  • the voltage effectively prevents adhesion and erosion between the second movable contact plate 420 and the static contact 30.
  • the resistance of the second movable contact plate 420 is smaller than the resistance of the first movable contact plate 410, and the stability of the flow of current between the second movable contact plate 420 and the stationary contact 30 can be effectively ensured.
  • the first movable contact plate 410 and the second movable contact plate 420 can be sequentially in contact with the stationary contact 30 by providing the first movable contact plate 410 and the second movable contact plate 420, and Because the resistance of the first dynamic touch panel 410 is greater than the resistance of the second dynamic touch panel 420, the current flowing through the static contact 30 and the first dynamic touch panel 410 is small, effectively preventing the first dynamic touch panel 410 and the static touch. Bonding and electric erosion occur between points 30.
  • the voltage difference between the second movable contact plate 420 and the static contact 30 is reduced, thereby effectively preventing the second movable contact plate 420 and the static contact 30. Bonding and electrical erosion occur between each other, which prolongs the service life of the movable contact assembly 40 and improves the performance of the relay 100.
  • the first movable contact plate 410 and the second movable contact plate 420 are sequentially disposed in the axial direction of the drive shaft 20 in a direction away from the stationary contact 30,
  • One side surface of the stationary contact 30 facing the movable contact assembly 40 has a stepped surface 310 including a first contact surface 311 and a first portion that are sequentially connected in a direction away from the stationary contact 30 in the axial direction of the drive shaft 20.
  • the second contact surface 312 is adapted to be in contact with the first contact surface 311, and the second movable contact panel 420 is adapted to be in contact with the second contact surface 312.
  • the first movable contact plate 410 can be first in contact with the first contact surface 311, and when the drive shaft 20 continues to drive the movable contact assembly 40, the second When the movable contact plate 420 is in contact with the second contact surface 312, the voltage between the second movable contact plate 420 and the static contact 30 is lowered, thereby avoiding the sticking between the second movable contact plate 420 and the second contact surface 312. Connection, electric erosion.
  • the first contact surface 311 and the second contact surface 312 are formed as planes, respectively. Thereby, the manufacturing of the first contact surface 311 and the second contact surface 312 is facilitated, so that the production efficiency can be improved and the production cost can be reduced. Moreover, the first contact surface 311 and the second contact surface 312 are disposed in a plane, which can improve the stability and reliability of the electrical connection between the first movable contact 410 and the first contact surface 311, and the second movable contact panel 420 and the first The stability and reliability of the electrical connection between the two contact faces 312.
  • a connecting surface 313 is formed between the first contact surface 311 and the second contact surface 312.
  • the connecting surface 313 is configured to be oriented along the axial direction of the driving shaft 20. It extends obliquely away from the direction of the stationary contact 30 in a direction away from the central axis of the drive shaft 20. Therefore, when the driving shaft 20 drives the first moving contact plate 410 to move toward the first contact surface 311, interference between the first moving contact plate 410 and the connecting surface 313 can be prevented, and the first moving contact plate 410 and the first movable layer are facilitated. Contact connection between the connection faces 313.
  • the first elastic component 430 may include a first elastic component 431, and the first elastic component 431 is sleeved on the driving shaft 20. The two ends of the first elastic component 431 and the first dynamic touchpad respectively 410 and the second movable contact plate 420 are stopped.
  • the first movable contact plate 410 is first in contact with the first contact surface 311.
  • the drive shaft 20 continues to move, one end of the first elastic member 431 is abutted against the first movable contact plate 410, and the other end of the first elastic member 431 is pressed by the second movable contact plate 420 to be elastically deformed, and the drive shaft is driven.
  • the touch panel 410 is activated. Therefore, it is advantageous to improve the reliability and stability of the first moving contact plate 410 and the first connecting surface 313, the second moving contact plate 420 and the second contact surface 312.
  • the first elastic member 431 can drive the second movable contact plate 420 to move away from the second connecting surface 313 under the elastic restoring force.
  • the structure is simple and the operation is stable.
  • the first elastic component 430 may include a first elastic member 431 and a first fixing member 432.
  • the first elastic member 431 is sleeved on the driving shaft 20, and the first fixing member is fixed.
  • the member 432 is mounted on the drive shaft 20 and located at one end of the first elastic member 431 adjacent to the second movable contact plate 420; the upper end of the first elastic member 431 is abutted against the first movable contact plate 410, and the lower end of the first elastic member 431 It is stopped against the first fixing member 432.
  • the fixation and reliability of the fixing of the first elastic member 431 can be improved.
  • the contact area between the second movable contact plate 420 and the first elastic member 431 can be increased, so that the second movable contact plate 420 can be improved when the first elastic member 431 is pressed. Stationarity.
  • one end of the second movable contact plate 420 away from the static contact 30 is provided with a second elastic component 440, and the second elastic component 440 may include the first
  • the second elastic member 441 and the second fixing member 442 are attached to the driving shaft 20, thereby facilitating the fixed assembly of the second fixing member 442 and the driving shaft 20. Both ends of the second elastic member 441 are respectively abutted against the second movable contact plate 420 and the second fixed member 442.
  • the other end of the drive shaft 20 may be provided with a magnetic member 70 and a limiting member 50 , and a third elastic member 60 is disposed between the magnetic member 70 and the limiting member 50 .
  • the two ends of the third elastic member 60 are respectively abutted against the magnetic member 70 and the limiting member 50.
  • the outer side of the magnetic member 70 may be wound around the coil 820.
  • the relay 100 can be driven by electromagnetic force.
  • electromagnetic drive can be used to drive the drive shaft 20 and the housing 10.
  • a relative motion is generated to drive the movable contact assembly 40 into communication with the stationary contact 30.
  • the movement stroke of the drive shaft 20 can be defined, the movement distance of the drive shaft 20 is prevented from being excessively large, the damage of the components of the relay 100 is caused, and the stability and reliability of the operation of the relay 100 are improved.
  • At least one of the limiting member 50 and the magnetic member 70 forms a limiting hole 510 , and the third elastic member 60 is located in the limiting hole 510 . That is to say, the limiting hole 510 can be disposed on the limiting member 50, and the third elastic member 60 is located in the limiting hole 510. It is also possible to provide a limiting hole 510 on the magnetic member 70, and the third elastic member 60 is located in the limiting hole 510. Thereby, the fixed fitting of the third elastic member 60 is facilitated, and further, the deviation of the third elastic member 60 when being pressed is prevented, and the stability of the operation of the relay 100 is improved.
  • a first insulating member 210 is disposed between the first movable contact plate 410 and the driving shaft 20, and the first insulating member 210 is formed in an annular structure on the first insulating member 210.
  • a first limiting slot 211 is formed, and the first movable contact plate 410 is mounted in the first limiting slot 211.
  • a second insulating member 220 may be disposed between the second movable contact plate 420 and the driving shaft 20, and the second insulating member 220 is formed into an annular structure.
  • the second insulating member 220 is formed with a second limiting slot 221, and the second movable contact is formed.
  • the plate 420 is installed in the second limiting groove 221 .
  • one end of the drive shaft 20 has a stop portion 230, and one end of the movable contact assembly 40 is abutted against the stop portion 230.
  • the fastening of the movable contact assembly 40 can be improved.
  • a stop portion 230 may be provided at the end of the drive shaft 20, and the upper end of the movable contact assembly 40 is abutted against the stop portion 230, thereby preventing the movable contact assembly 40 from being disengaged from the drive shaft 20.
  • the stability of the assembly between the movable contact assembly 40 and the drive shaft 20 is enhanced.
  • the relay 100 according to an embodiment of the present application will be described in detail below with reference to FIGS. 1-13 in three specific embodiments. It is to be understood that the following description is only illustrative and not restrictive.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the relay 100 includes a housing 10, a drive shaft 20, two spaced apart stationary contacts 30, a movable contact assembly 40, a limiting member 50, a magnetic member 70, a skeleton 80, and a guide. Magnetic sleeve 810 and coil 820.
  • the cavity 10 is defined in the housing 10, and two static contacts 30 are spaced apart from the upper end of the housing 10.
  • One end of the drive shaft 20 extends into the cavity 110, and the drive shaft 20 is movable up and down relative to the housing 10 (up and down direction as shown in Fig. 6).
  • the movable contact assembly 40 is disposed at an upper end of the drive shaft 20.
  • the upper end of the drive shaft 20 is provided with a stop portion 230, and the upper end of the movable contact assembly 40 is stopped by the stop portion 230.
  • the movable contact assembly 40 includes a first movable contact plate 410 and a second movable contact plate 420.
  • the end of the first movable contact plate 410 is a first movable contact
  • the end of the second movable contact plate 420 is a second dynamic touch. point.
  • the resistance value of the first movable contact plate 410 is greater than the resistance value of the second movable contact plate 420.
  • the material of the first dynamic touch panel 410 may be copper containing oxide (such as alumina copper or the like), and the second movable contact panel 420 may be made of pure copper.
  • the first movable contact plate 410 and the second movable contact plate 420 are spaced apart in the axial direction of the drive shaft 20, and the first movable contact plate 410 is located above the second movable contact plate 420 (up and down direction as shown in FIG. 6).
  • the clearance between the first movable contact 410 and the stationary contact 30 is L1
  • the gap between the second movable contact 420 and the stationary contact 30 is L2. Satisfying: L1 ⁇ L2, the first movable contact plate 410 is movable in the axial direction of the drive shaft 20.
  • a first elastic component 430 is disposed between the first dynamic touch panel 410 and the second dynamic touch panel 420.
  • the first elastic component 430 includes a first elastic component 431 and a first fixing component 432.
  • the first elastic component 431 is sleeved on the driving.
  • On the shaft 20, the two ends of the first elastic member 431 are respectively abutted against the first movable contact plate 410 and the second movable contact plate 420.
  • the first fixing member 432 is mounted on the drive shaft 20 and is located at one end of the first elastic member 431 adjacent to the second movable contact plate 420.
  • the lower end of the stationary contact 30 is provided with a stepped surface 310.
  • the stepped surface 310 includes a first contact surface 311 and a second contact surface 312.
  • the first contact surface 311 and the second contact surface 312 are planes extending in the horizontal direction.
  • a contact surface 313 is formed between the contact surface 311 and the second contact surface 312.
  • the connection surface 313 is a vertical plane extending in the up and down direction, and the connection portion of the connection surface 313 and the second connection surface 313 is provided with a round chamfer.
  • the second end of the movable contact assembly 40 is provided with a second elastic member 440.
  • the second elastic member 440 includes a second elastic member 441 and a second fixing member 442.
  • the second fixing member 442 is mounted on the driving shaft 20, and the second elastic member Both ends of the 441 are respectively abutted against the second movable contact plate 420 and the second fixing member 442.
  • the other end of the drive shaft 20 is provided with a magnetic member 70 and a limiting member 50.
  • a third elastic member 60 is disposed between the magnetic member 70 and the limiting member 50.
  • a limiting hole 510 is formed on the limiting member 50, and the third elastic member 60 is located in the limiting hole 510.
  • the outer sleeve of the limiting member 50 and the magnetic member 70 is sleeved with a bobbin 80.
  • the bobbin 80 is wound around the bobbin 820.
  • the coil 820 can generate electromagnetic force, thereby driving the magnetic member 70 to drive.
  • the drive shaft 20 moves.
  • a magnetic sleeve 810 is embedded between the magnetic member 70 and the skeleton 80. The magnetic sleeve 810 can reduce the magnetic energy damage of the coil 820 and improve the utilization of electromagnetic energy.
  • the magnetic member 70 when the two static contacts 30 need to be connected, the magnetic member 70 is energized. Under the electromagnetic force, the magnetic member 70 drives the drive shaft 20 and drives the movable contact assembly 40 to move toward the stationary contact 30 (as shown in the figure). The upper portion shown in Fig. 6 causes the first touch point of the end of the first movable contact plate 410 to first come into contact with the stationary contact 30 (as shown in Figs. 8 and 9). At this time, the two stationary contacts 30 are communicated by the first movable contact at the end of the first movable contact 410, and the voltage difference between the two stationary contacts 30 is lowered.
  • the drive shaft 20 continues to move the movable contact assembly 40 upward, the second movable contact plate 420 presses the first elastic member 431 and contacts the second contact surface 312, and the second static contact 30 passes the second dynamic contact
  • the second movable contact at the end of the plate 420 is electrically connected (as shown in FIGS. 10 and 11), since the first movable contact plate 410 first communicates with the stationary contact 30, thereby reducing the static contact 30 and the second movement.
  • the pressure difference between the touch pads 420 effectively prevents adhesion and erosion between the second movable contact plate 420 and the static contact 30.
  • the current of the magnetic member 70 is cut, and the driving drive shaft 20 is driven by the elastic restoring force of the first elastic member 431, the second elastic member 441 and the third elastic member 60.
  • the second movable contact at the end of the second movable contact plate 420 is first disengaged from the second contact surface 312 of the two stationary contacts 30, and then, at the end of the first movable contact plate 410 The first moving contact is disengaged from the first contact surface 311 of the two stationary contacts 30, thereby achieving a break between the two stationary contacts 30.
  • the first dynamic touch panel 410 and the second dynamic touch panel 420 can be sequentially in contact with the static contact 30, and, due to the first dynamic touch
  • the resistance of the plate 410 is greater than the resistance of the second movable contact plate 420, and the current flowing through the static contact 30 and the first movable contact plate 410 is small, effectively preventing the adhesion between the first movable contact plate 410 and the static contact 30. Connection, electric erosion.
  • the second movable contact plate 420 is in contact with the static contact 30, the voltage difference between the second movable contact plate 420 and the static contact 30 is reduced, thereby effectively preventing the second movable contact plate 420 and the static contact 30. Bonding and electrical erosion occur between each other, which prolongs the service life of the movable contact assembly 40 and improves the performance of the relay 100.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the upper end of the drive shaft 20 is spaced apart from the first insulating member 210 and the second insulating member 220, and the first insulating member 210 is formed as The first insulating member 210 is formed with a first limiting slot 211.
  • the first movable contact plate 410 is mounted in the first limiting slot 211.
  • the second movable contact plate 420 and the driving shaft 20 are provided with a second
  • the second insulating member 220 is formed with a second limiting slot 221, and the second movable contact plate 420 is mounted in the second limiting slot 221.
  • the fixed assembly between the first movable contact plate 410 and the second movable contact plate 420 and the drive shaft 20 is facilitated, and the fixed between the first movable contact plate 410 and the second movable contact plate 420 and the drive shaft 20 is improved.
  • the robustness and reliability, and the current transmission between the first movable contact plate 410 and the second movable contact plate 420 and the drive shaft 20 can be prevented, and the stability of the operation of the relay 100 is improved.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • connection surface 313 between the first contact surface 311 and the second contact surface 312 is a slope, and the connection surface 313 is from top to bottom. It is inclined toward the direction away from the first movable contact 410.

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Abstract

一种继电器(100)，继电器(100)包括：壳体(10)、驱动轴(20)、静触点(30)和动触点组件(40)，壳体(10)内限定出空腔(110)，驱动轴(20)的一端伸入空腔(110)内，驱动轴(20)相对于壳体(10)可移动。动触点组件(40)设在驱动轴(20)的一端，动触点组件(40)包括第一动触板(410)和第二动触板(420)，第一动触板(410)与第二动触板(420)之间设有第一弹性组件(430)，第一动触板(410)与静触点(30)之间的电气间隙小于第二动触板与静触点之间的电气间隙。

Description

继电器
相关申请的交叉引用
本申请基于申请号为201711242377.8，申请日为2017年11月30日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及电器技术领域，具体而言，尤其涉及一种继电器。
背景技术
相关技术中，继电器采用一对触点(动、静触点各一个)或是一组触点(两个静触点，一个动触点)，继电器吸合时动触点直接与静触点接触，由于动触点和静触点间压差大，触点烧蚀严重，使继电器的接触性能下降，电气寿命降低。
申请内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请提出一种继电器，所述继电器具有结构简单、性能稳定的优点。
根据本申请实施例的继电器，包括：壳体，所述壳体内限定出空腔；驱动轴，所述驱动轴的一端伸入所述空腔内，所述驱动轴相对于所述壳体可移动；静触点，所述静触点设在所述壳体上；动触点组件，所述动触点组件设在所述驱动轴的所述一端，所述动触点组件包括第一动触板和第二动触板，所述第一动触板相对于所述驱动轴可移动，所述第一动触板的电阻值大于所述第二动触板的电阻值，所述第一动触板与所述第二动触板之间设有第一弹性组件，所述第一动触板与所述静触点之间的电气间隙小于所述第二动触板与所述静触点之间的电气间隙，当所述驱动轴朝向所述静触点的方向移动时、所述第一动触板相对于所述第二动触板先与所述静触点接触。
根据本申请实施例的继电器，通过设置第一动触板和第二动触板，可以使第一动触板和第二动触板与静触点依次接触连通，而且，由于第一动触板的电阻大于第二动触板的电阻，流经静触点与第一动触板的电流较小，有效防止了第一动触板与静触点之间发生粘接、电蚀。而第二动触板与静触点接触时，第二动触板与静触点之间的电压差得到了降低，从而有效防止了第二动触板与静触点之间发生粘接、电蚀，延长了动触点组件的使用寿命，提高了继电器的工作性能。
根据本申请的一些实施例，所述第一动触板和所述第二动触板在所述驱动轴的轴向、朝向远离所述静触点的方向依次间隔设置，所述静触点的朝向所述动触点组件的一侧表面具有台阶面，所述台阶面包括沿所述驱动轴的轴向、朝向远离所述静触点的方向依次相连的第一接触面和第二接触面，其中所述第一动触板适于与所述第一接触面接触，所述第二动触板适于与所述第二接触面接触。
在本申请的一些实施例中，所述第一接触面和所述第二接触面分别形成为平面。
根据本申请的一些实施例，所述第一接触面和所述第二接触面之间具有连接面，沿所述驱动轴的轴向、所述连接面构造成沿朝向远离所述静触点的方向、朝向远离所述驱动轴的中心轴线的方向倾斜延伸。
在本申请的一些实施例中，所述第一弹性组件包括第一弹性件，所述第一弹性件套设在所述驱动轴上，所述第一弹性件的两端分别与所述第一动触板和所述第二动触板止抵。
在本申请的一些实施例中，所述第一弹性组件包括第一弹性件和第一固定件，所述第一弹性件套设在所述驱动轴上，第一固定件，所述第一固定件安装在所述驱动轴上且位于所述第一弹性件的邻近所述第二动触板的一端；所述第一弹性件的上端与所述第一动触板止抵，所述第一弹性件的下端与所述第一固定件止抵。
根据本申请的一些实施例，所述第二动触板的远离所述静触点的一端设有第二弹性组件，所述第二弹性组件包括第二弹性件和第二固定件，所述第二固定件卡设在所述驱动轴上，所述第二弹性件的两端分别与所述第二动触板和所述第二固定件止抵。
在本申请的一些实施例中，所述驱动轴的另一端设有磁性件和限位件，所述磁性件和所述限位件之间设有第三弹性件，所述第三弹性件的两端分别与所述磁性件和限位件止抵。
进一步地，所述限位件和所述磁性件的至少一个上形成有限位孔，所述第三弹性件位于所述限位孔内。
根据本申请的一些实施例，所述第一动触板和所述驱动轴之间设有第一绝缘件，所述第一绝缘件形成为环形结构，所述第一绝缘件上形成有第一限位槽，所述第一动触板安装在所述第一限位槽内；所述第二动触板和所述驱动轴之间设有第二绝缘件，所述第二绝缘件形成为环形结构，所述第二绝缘件上形成有第二限位槽，所述第二动触板安装在所述第二限位槽内。
在本申请的一些实施例中，所述驱动轴的一端具有止挡部，所述动触点组件的一端与所述止挡部相止抵。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请实施例的继电器的结构示意图；
图2是图1中圈示的A部分的局部放大图；
图3是根据本申请实施例的继电器的局部结构示意图；
图4是根据本申请实施例的继电器的结构示意图；
图5是图4中圈示的B部分的局部放大图；
图6是根据本申请实施例的继电器的结构示意图，其中第一动触板和第二动触板均未与静触点接触；
图7是图6中圈示的C部分的局部放大图；
图8是根据本申请实施例的继电器的结构示意图，其中，第一动触板与静触点接触，第二动触板未与静触点接触；
图9是图8中圈示的D部分的局部放大图；
图10是根据本申请实施例的继电器的结构示意图其中，第一动触板和第二动触板均与静触点接触；
图11是图10中圈示的E部分的局部放大图；
图12是根据本申请实施例的继电器的局部结构示意图；
图13是根据本申请实施例的继电器的局部结构示意图。
附图标记：
继电器100，
壳体10，空腔110，
驱动轴20，第一绝缘件210，第一限位槽211，第二绝缘件220，第二限位槽221，止挡部230，
静触点30，台阶面310，第一接触面311，第二接触面312，连接面313，
动触点组件40，第一动触板410，第二动触板420，第一弹性组件430，第一弹性件431，第一固定件432，第二弹性组件440，第二弹性件441，第二固定件442，
限位件50，限位孔510，
第三弹性件60，
磁性件70，
骨架80，导磁套810，线圈820。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面参考图1-图13描述根据本申请实施例的继电器100。
如图1-图13所示，根据本申请实施例的继电器100，继电器100包括：壳体10、驱动轴20、静触点30和动触点组件40。
具体而言，壳体10内限定出空腔110，由此，可以将动触点组件40设于空腔110内，有利于提高继电器100的密封性和防水防尘性能。
驱动轴20的一端伸入空腔110内，驱动轴20相对于壳体10可移动，静触点30设在壳体10上，动触点组件40设在驱动轴20的一端。由此，当驱动轴20相对与壳体10运动时，可以带动动触点组件40运动，以接通或断开动触点组件40与静触点30，实现继电器100的接通或断开。
动触点组件40包括第一动触板410和第二动触板420，第一动触板410相对于驱动轴20可移动，第一动触板410的电阻值大于第二动触板420的电阻值，第一动触板410与第二动触板420之间设有第一弹性组件430，第一动触板410与静触点30之间的电气间隙小于第二动触板420与静触点30之间的电气间隙，当驱动轴20朝向静触点30的方向移动时、第一动触板410相对于第二动触板420先与静触点30接触。
需要说明的是，当驱动轴20带动动触点组件40运行时，由于第一动触板410与静触点30之间的间隙小于第二动触板420与静触点30之间的间隙。因此，第一动触板410首先与静触点30接触，当驱动轴20继续运动时，挤压第一动触板410和第二动触板420之间的第一弹性组件430，使第二动触板420与静触点30接触。第一动触板410的电阻值大于第二动触板420的电阻值，第一动触板410与静触点30接触时，静触点30与第一动触板410之间的流通电流相对较小，由此，可以防止第一动触板410与静触点30之间发生粘接、电蚀。
而且，当第二动触板420与静触点30接触时，由于第一动触板410先与静触点30已经连通，从而降低了静触点30与第二动触板420接通时的电压，有效防止了第二动触板420与静触点30之间发生粘接、电蚀。而且，第二动触板420的电阻小于第一动触板410的电阻，可以有效保证第二动触板420与静触点30之间电流的流动的稳定性。
根据本申请实施例的继电器100，通过设置第一动触板410和第二动触板420，可以使第一动触板410和第二动触板420与静触点30依次接触连通，而且，由于第一动触板410的电阻大于第二动触板420的电阻，流经静触点30与第一动触板410的电流较小，有效防止了第一动触板410与静触点30之间发生粘接、电蚀。而第二动触板420与静触点30接触时，第二动触板420与静触点30之间的电压差得到了降低，从而有效防止了第二动触板420与静触点30之间发生粘接、电蚀，延长了动触点组件40的使用寿命，提高了继电器100的工作性能。
根据本申请的一些实施例，如图1和图2所示，第一动触板410和第二动触板420在驱动轴20的轴向、朝向远离静触点30的方向依次间隔设置，静触点30的朝向动触点组件40的一侧表面具有台阶面310，台阶面310包括沿驱动轴20的轴向、朝向远离静触点30的方向依次相连的第一接触面311和第二接触面312，其中第一动触板410适于与第一接触面311接触，第二动触板420适于与第二接触面312接触。
由此，当驱动轴20驱动动触点组件40运动时，可以使第一动触板410首先与第一接触面311接触连通，而当驱动轴20继续驱动动触点组件40运动，第二动触板420与第二接触面312接触连通时，第二动触板420与静触点30之间的电压降低，从而避 免了第二动触板420与第二接触面312之间发生粘接、电蚀。
在本申请的一些实施例中，如图2和图5所示，第一接触面311和第二接触面312分别形成为平面。由此，便于第一接触面311和第二接触面312的加工制造，从而可以提高生产效率，降低生产成本。而且，将第一接触面311和第二接触面312设置为平面，可以提高第一动触板410与第一接触面311电连接的稳定性和可靠性，以及第二动触板420与第二接触面312之间电连接的稳定性和可靠性。
根据本申请的一些实施例，如图4和图5所示，第一接触面311和第二接触面312之间具有连接面313，沿驱动轴20的轴向、连接面313构造成沿朝向远离静触点30的方向、朝向远离驱动轴20的中心轴线的方向倾斜延伸。由此，当驱动轴20驱动第一动触板410朝向第一接触面311运动时，可以防止第一动触板410与连接面313之间发生干涉，便于第一动触板410与第一连接面313之间的接触连接。
如图4和图5所示，第一弹性组件430可以包括第一弹性件431，第一弹性件431套设在驱动轴20上，第一弹性件431的两端分别与第一动触板410和第二动触板420止抵。
可以理解的是，由于第一动触板410与静触点30之间的电气间隙小于第二动触板420与静触点30之间的电气间隙，因此，当驱动轴20驱动动触点组件40运动时，第一动触板410首先与第一接触面311接触连通。而当驱动轴20继续运动时，第一弹性件431的一端与第一动触板410止抵，第一弹性件431的另一端被第二动触板420挤压发生弹性形变，且驱动轴20驱动第二动触板420克服第一弹性件431的弹性力，使第二动触板420与第二接触面312接触，第一弹性件431的弹性力朝向静触点30挤压第一动触板410。由此，有利于提高第一动触板410与第一连接面313、第二动触板420与第二接触面312电连接的可靠性和稳定性。
而且，当需要断开动触点组件40与静触点30时，第一弹性件431在弹性回复力的作用下，可以驱动第二动触板420朝向远离第二连接面313的方向运动，结构简单、运行稳定。
在本申请的一些实施例中，如图3所示，第一弹性组件430可以包括第一弹性件431和第一固定件432，第一弹性件431套设在驱动轴20上，第一固定件432安装在驱动轴20上且位于第一弹性件431的邻近第二动触板420的一端；第一弹性件431的上端与第一动触板410止抵，第一弹性件431的下端与第一固定件432止抵。由此，通过设置第一固定件432，可以提高第一弹性件431固定的牢固性和可靠性。而且，通过设置第一固定件432，可以增大第二动触板420与第一弹性件431之间的接触面积，从而可 以提高第二动触板420挤压第一弹性件431运行时的平稳性。
根据本申请的一些实施例，如图3、图8和图9所示，第二动触板420的远离静触点30的一端设有第二弹性组件440，第二弹性组件440可以包括第二弹性件441和第二固定件442，第二固定件442卡设在驱动轴20上，由此，便于第二固定件442与驱动轴20的固定装配。第二弹性件441的两端分别与第二动触板420和第二固定件442止抵。
可以理解的是，当驱动轴20驱动动触点组件40朝向静触点30运动时，需要克服第二弹性件441的弹性力，并使第一动触板410和第二动触板420与静触点30接触，第二弹性件441的弹性力朝向静触点30挤压第一动触板410和第二动触板420，从而有利于提高第一动触板410和第二动触板420与静触点30电连接的可靠性和稳定性。
在本申请的一些实施例中，如图6所示，驱动轴20的另一端可以设有磁性件70和限位件50，磁性件70和限位件50之间设有第三弹性件60，第三弹性件60的两端分别与磁性件70和限位件50止抵。由此，通过在磁性件70和限位件50之间设置第三弹性件60，当磁性件70驱动驱动轴20运动时，需要克服第三弹性件60的弹性力，使第三弹性件60产生弹性形变。而当断开动触点组件40与静触点30之间的电连接时，第三弹性件60在弹性恢复力的作用下，可以推动磁性件70并带动驱动轴20朝向远离静触点30的方向运动，操作简单、运行稳定。
在本申请的一些实施例中，如图13所示，磁性件70的外侧可以缠绕线圈820。需要说明的是，继电器100可以利用电磁驱动，通过在驱动轴20的另一端设置磁性件70，并在磁性件70的外侧缠绕线圈820，可以利用电磁驱动使驱动轴20与壳体10之间产生相对运动，以驱动动触点组件40与静触点30连通。而且，通过设置限位件50，可以限定驱动轴20的运动行程，防止驱动轴20运动距离过大，引起继电器100部件的损坏，提高了继电器100运行的稳定性和可靠性。
进一步地，如图6所示，限位件50和磁性件70的至少一个上形成有限位孔510，第三弹性件60位于限位孔510内。也就是说，可以在限位件50上设置限位孔510，第三弹性件60位于限位孔510内。也可以是在磁性件70上设置限位孔510，第三弹性件60位于限位孔510内。由此，便于第三弹性件60的固定装配，而且，可以防止第三弹性件60被挤压时发生偏离，提高了继电器100运行的稳定性。
根据本申请的一些实施例，如图3所示，第一动触板410和驱动轴20之间设有第一绝缘件210，第一绝缘件210形成为环形结构，第一绝缘件210上形成有第一限位槽211，第一动触板410安装在第一限位槽211内。由此，便于第一动触板410与驱动轴 20之间的固定装配，提高了第一动触板410与驱动轴20之间固定的牢固性和可靠性，而且，可以防止第一动触板410与驱动轴20之间的电流传输，提高了继电器100运行的稳定性。
第二动触板420和驱动轴20之间可以设有第二绝缘件220，第二绝缘件220形成为环形结构，第二绝缘件220上形成有第二限位槽221，第二动触板420安装在第二限位槽221内。由此，便于第二动触板420与驱动轴20之间的固定装配，提高了第二动触板420与驱动轴20之间固定的牢固性和可靠性，而且，可以防止第二动触板420与驱动轴20之间的电流传输，提高了继电器100运行的稳定性。
在本申请的一些实施例中，如图1所示，驱动轴20的一端具有止挡部230，动触点组件40的一端与止挡部230相止抵。由此，可以提高动触点组件40固定的牢固性。例如图1中的示例所示，可以在驱动轴20的端部设置止挡部230，动触点组件40的上端与止挡部230止抵，从而可以防止动触点组件40脱离驱动轴20，增强了动触点组件40与驱动轴20之间装配的稳固性。
下面参照图1-图13以三个具体的实施例详细描述根据本申请实施例的继电器100。值得理解的是，下述描述仅是示例性描述，而不是对本申请的具体限制。
实施例一：
如图6-图13所示，继电器100包括：壳体10、驱动轴20、间隔设置的两个静触点30、动触点组件40、限位件50、磁性件70、骨架80、导磁套810和线圈820。
其中，如图6所示，壳体10内限定出空腔110，两个静触点30间隔设在壳体10上端。驱动轴20的一端伸入空腔110内，驱动轴20相对于壳体10可上下移动(如图6中所示的上下方向)。
动触点组件40设在驱动轴20的上端，驱动轴20的上端设有止挡部230，动触点组件40的上端与止挡部230止抵。动触点组件40包括第一动触板410和第二动触板420，第一动触板410的端部为第一动触点，第二动触板420的端部为第二动触点。第一动触板410的电阻值大于第二动触板420的电阻值。例如，第一动触板410的材质可以为含有氧化物的铜(如氧化铝铜等)，第二动触板420可以为纯铜材质。
第一动触板410和第二动触板420沿驱动轴20的轴向方向间隔设置，第一动触板410位于第二动触板420的上方(如图6中所示的上下方向)，第一动触板410与静触点30之间的电气间隙为L1，第二动触板420与静触点30之间的间隙为L2。满足：L1＜L2，第一动触板410可沿驱动轴20的轴向方向移动。
第一动触板410与第二动触板420之间设有第一弹性组件430，第一弹性组件430 包括第一弹性件431和第一固定件432，第一弹性件431套设在驱动轴20上，第一弹性件431的两端分别与第一动触板410和第二动触板420止抵。第一固定件432安装在驱动轴20上且位于第一弹性件431的邻近第二动触板420的一端。
静触点30的下端设有台阶面310，台阶面310包括：第一接触面311和第二接触面312，第一接触面311和第二接触面312均为沿水平方向延伸的平面，第一接触面311和第二接触面312之间具有连接面313，连接面313为沿上下方向延伸的竖直平面，连接面313与第二连接面313的连接部位设有圆倒角。
动触点组件40的下端设有第二弹性组件440，第二弹性组件440包括第二弹性件441和第二固定件442，第二固定件442卡设在驱动轴20上，第二弹性件441的两端分别与第二动触板420和第二固定件442止抵。
驱动轴20的另一端设有磁性件70和限位件50，磁性件70和限位件50之间设有第三弹性件60。限位件50上形成有限位孔510，第三弹性件60位于限位孔510内。
如图13所示，限位件50和磁性件70的外部套设有骨架80，骨架80绕设有线圈820，通过对线圈820通电，可以使线圈820产生电磁力，从而驱动磁性件70带动驱动轴20运动。在磁性件70与骨架80之间嵌设有导磁套810，导磁套810可以降低线圈820的磁能损坏，提高电磁能利用率。
需要说明的是，当需要连通两个静触点30时，磁性件70通电，在电磁作用力下，磁性件70驱动驱动轴20并带动动触点组件40朝向静触点30运动(如图6中所示的上方)，使第一动触板410端部的第一触动点首先与静触点30接触(如图8和图9所示)。此时，两个静触点30通过第一动触板410端部的第一动触点连通，两个静触点30之间的电压差降低。
随后，驱动轴20继续带动动触点组件40向上运动，第二动触板420挤压第一弹性件431并与第二接触面312接触，两个静触点30之间通过第二动触板420端部的第二动触点电连接(如图10和图11中所示)，由于第一动触板410先与静触点30连通，从而降低了静触点30与第二动触板420之间的压差，有效防止了第二动触板420与静触点30之间发生粘接、电蚀。
当需要断开两个静触点30时，切断磁性件70的电流，在第一弹性件431、第二弹性件441和第三弹性件60的弹性回复力的作用下，驱动驱动轴20朝向远离静触点30的方向运动，第二动触板420端部的第二动触点首先与两个静触点30的第二接触面312脱离，随后，第一动触板410端部的第一动触点与两个静触点30的第一接触面311脱离，从而实现两个静触点30之间的断开。
由此，通过设置第一动触板410和第二动触板420，可以使第一动触板410和第二动触板420与静触点30依次接触连通，而且，由于第一动触板410的电阻大于第二动触板420的电阻，流经静触点30与第一动触板410的电流较小，有效防止了第一动触板410与静触点30之间发生粘接、电蚀。而第二动触板420与静触点30接触时，第二动触板420与静触点30之间的电压差得到了降低，从而有效防止了第二动触板420与静触点30之间发生粘接、电蚀，延长了动触点组件40的使用寿命，提高了继电器100的工作性能。
实施例二：
如图1-图3所示，与实施例一不同的是，在该实施例中，驱动轴20的上端间隔设有第一绝缘件210和第二绝缘件220，第一绝缘件210形成为环形结构，第一绝缘件210上形成有第一限位槽211，第一动触板410安装在第一限位槽211内；第二动触板420和驱动轴20之间设有第二绝缘件220，第二绝缘件220形成为环形结构，第二绝缘件220上形成有第二限位槽221，第二动触板420安装在第二限位槽221内。
由此，便于第一动触板410和第二动触板420与驱动轴20之间的固定装配，提高了第一动触板410、第二动触板420与驱动轴20之间固定的牢固性和可靠性，而且，可以防止第一动触板410、第二动触板420与驱动轴20之间的电流传输，提高了继电器100运行的稳定性。
实施例三：
如图4和图5所示，与实施例二不同的是，在该实施例中，第一接触面311和第二接触面312之间的连接面313为斜面，连接面313由上至下朝向远离第一动触板410的方向倾斜。
由此，当驱动轴20驱动第一动触板410朝向第一接触面311运动时，可以防止第一动触板410与连接面313之间发生干涉，便于第一动触板410与第一连接面313之间的接触连接。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种继电器(100)，其特征在于，包括：
    壳体(10)，所述壳体(10)内限定出空腔(110)；
    驱动轴(20)，所述驱动轴(20)的一端伸入所述空腔(110)内，所述驱动轴(20)相对于所述壳体(10)可移动；
    静触点(30)，所述静触点(30)设在所述壳体(10)上；
    动触点组件(40)，所述动触点组件(40)设在所述驱动轴(20)的所述一端，所述动触点组件(40)包括第一动触板(410)和第二动触板(420)，所述第一动触板(410)相对于所述驱动轴(20)可移动，所述第一动触板(410)的电阻值大于所述第二动触板(420)的电阻值，所述第一动触板(410)与所述第二动触板(420)之间设有第一弹性组件(430)，所述第一动触板(410)与所述静触点(30)之间的电气间隙小于所述第二动触板(420)与所述静触点(30)之间的电气间隙，当所述驱动轴(20)朝向所述静触点(30)的方向移动时、所述第一动触板(410)相对于所述第二动触板(420)先与所述静触点(30)接触。
  2. 根据权利要求1所述的继电器(100)，其特征在于，所述第一动触板(410)和所述第二动触板(420)在所述驱动轴(20)的轴向、朝向远离所述静触点(30)的方向依次间隔设置，
    所述静触点(30)的朝向所述动触点组件(40)的一侧表面具有台阶面(310)，所述台阶面(310)包括沿所述驱动轴(20)的轴向、朝向远离所述静触点(30)的方向依次相连的第一接触面(311)和第二接触面(312)，其中，所述第一动触板(410)适于与所述第一接触面(311)接触，所述第二动触板(420)适于与所述第二接触面(312)接触。
  3. 根据权利要求2所述的继电器(100)，其特征在于，所述第一接触面(311)和所述第二接触面(312)分别形成为平面。
  4. 根据权利要求2所述的继电器(100)，其特征在于，所述第一接触面(311)和所述第二接触面(312)之间具有连接面(313)，沿所述驱动轴(20)的轴向、所述连接面(313)构造成沿朝向远离所述静触点(30)的方向、朝向远离所述驱动轴(20)的中心轴线的方向倾斜延伸。
  5. 根据权利要求1-4中任一项所述的继电器(100)，其特征在于，所述第一弹性组件(430)包括第一弹性件(431)，所述第一弹性件(431)套设在所述驱动轴(20) 上，所述第一弹性件(431)的两端分别与所述第一动触板(410)和所述第二动触板(420)止抵。
  6. 根据权利要求1-5中任一项所述的继电器(100)，其特征在于，所述第一弹性组件(430)包括第一弹性件(431)和第一固定件(432)，所述第一弹性件(431)套设在所述驱动轴(20)上，所述第一固定件(432)安装在所述驱动轴(20)上且位于所述第一弹性件(431)的邻近所述第二动触板(420)的一端；所述第一弹性件(431)的上端与所述第一动触板(410)止抵，所述第一弹性件(431)的下端与所述第一固定件(432)止抵。
  7. 根据权利要求1-6中任一项所述的继电器(100)，其特征在于，所述第二动触板(420)的远离所述静触点(30)的一侧设有第二弹性组件(440)，所述第二弹性组件(440)包括第二弹性件(441)和第二固定件(442)，所述第二固定件(442)卡设在所述驱动轴(20)上，所述第二弹性件(441)的两端分别与所述第二动触板(420)和所述第二固定件(442)止抵。
  8. 根据权利要求1-7中任一项所述的继电器(100)，其特征在于，所述驱动轴(20)的另一端设有磁性件(70)和限位件(50)，所述磁性件(70)和所述限位件(50)之间设有第三弹性件(60)，所述第三弹性件(60)的两端分别与所述磁性件(70)和所述限位件(50)止抵。
  9. 根据权利要求8所述的继电器(100)，其特征在于，所述限位件(50)和所述磁性件(70)的至少一个上形成有限位孔(510)，所述第三弹性件(60)位于所述限位孔(510)内。
  10. 根据权利要求1-9中任一项所述的继电器(100)，其特征在于，所述第一动触板(410)和所述驱动轴(20)之间设有第一绝缘件(210)，所述第一绝缘件(210)形成为环形结构，所述第一绝缘件(210)上形成有第一限位槽(211)，所述第一动触板(410)安装在所述第一限位槽(211)内；所述第二动触板(420)和所述驱动轴(20)之间设有第二绝缘件(220)，所述第二绝缘件(220)形成为环形结构，所述第二绝缘件(220)上形成有第二限位槽(221)，所述第二动触板(420)安装在所述第二限位槽(221)内。
  11. 根据权利要求1-10中任一项所述的继电器(100)，其特征在于，所述驱动轴(20)的一端具有止挡部(230)，所述动触点组件(40)的一端与所述止挡部(230)相止抵。
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