WO2018201949A1 - 一种静触点定位精度高的超小型电磁继电器 - Google Patents

一种静触点定位精度高的超小型电磁继电器 Download PDF

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Publication number
WO2018201949A1
WO2018201949A1 PCT/CN2018/084478 CN2018084478W WO2018201949A1 WO 2018201949 A1 WO2018201949 A1 WO 2018201949A1 CN 2018084478 W CN2018084478 W CN 2018084478W WO 2018201949 A1 WO2018201949 A1 WO 2018201949A1
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Prior art keywords
static
base
static spring
spring body
ultra
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PCT/CN2018/084478
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English (en)
French (fr)
Inventor
林佳宾
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厦门宏发信号电子有限公司
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Priority to US16/473,619 priority Critical patent/US11380505B2/en
Publication of WO2018201949A1 publication Critical patent/WO2018201949A1/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
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/60—Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/281—Mounting of the relay; Encapsulating; Details of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/282—Constructional details not covered by H01H51/281
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements

Definitions

  • the invention relates to the technical field of relays, in particular to an ultra-small electromagnetic relay with high positioning accuracy of a static contact.
  • FIG. 1 is a schematic structural view of a prior art static spring strip
  • FIG. 2 is a schematic view of a prior art static spring and a coil
  • 3 is a schematic view of a prior art static spring and a coil (relative to the structure inversion state of FIG. 2)
  • FIG. 4 is a schematic structural view of a prior art static spring, coil and base injection molded, FIG.
  • the technical static spring, the coil and the base are integrally molded (relative to the structure inverted state of FIG.
  • the contact surface 101 of the static spring 100 has been welded with the static contact 102, and the static spring 100 and the coil 103 are After being combined, the static spring 100, the coil 103 and the base 104 are integrally formed by injection molding.
  • the ultra-small electromagnetic relay, the contact portion of the static spring 100 is statically formed when the coil 103 is formed by injection molding.
  • the positioning position of the spring 100 in the mold is generally at the edge of the static spring on the outer side of the base.
  • the prior art uses two positioning methods to realize the positioning of the contact 102 of the static spring 100, wherein the first positioning is at the base.
  • the first positioning portion 105 is provided at the lead-out terminal of the static spring 100, and the second positioning position is a partial-exit end position in the longitudinal direction of the base, which corresponds to the contact surface of the static spring 100.
  • the side end of the 101 is provided with a second positioning portion 106. Since the direct positioning of the center position of the contact of the static spring 100 is not achieved, the positioning method has the following drawbacks:
  • the positioning is not complete and stable. There is no direct positioning at the contact position of the static spring. If the static spring is slightly deformed and lifted at this position, and the positioning is not corrected, the position of the contacts will be consistent after injection into the base. Poor performance, affecting the consistency of parameters such as contact gap and overtravel of the relay; it is not conducive to improving product production efficiency and performance consistency.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide an ultra-small electromagnetic relay with high static positioning accuracy.
  • the position of the static spring contact can be greatly improved during the injection molding process.
  • the consistency after injection molding effectively improves the contact gap of the product and the consistency of the overtravel parameters, thereby improving the product quality.
  • an ultra-small electromagnetic relay with high positioning accuracy of a static contact comprising a static spring, a coil and a base which are integrally connected by injection molding
  • the static spring includes a static spring for mounting a static spring body of the contact and a static spring lead-out terminal extending from the static spring body to the outside of the base; wherein the static spring lead-out terminal is provided with a first positioning portion for injection molding at a position corresponding to a width direction edge of the base
  • the static spring body is provided with an elongated protruding portion corresponding to the longitudinal direction of the base, and the protruding portion extends outside the base as a second positioning portion during injection molding; in the base, corresponding to the static a spring body is mounted at a rear surface of the static contact, and a through hole is formed through the base along the thickness direction, so that the back surface of the static spring body with the static contact is used as the third positioning portion during injection molding.
  • the positioning is supported by the positioning member of the
  • the protrusion extending outside the base and serving as the second positioning portion at the time of injection molding may be cut to expose or not expose the longitudinal outer side of the base after the injection molding is completed.
  • the coil is disposed between the static spring body of the static spring and the base, and the coil is configured to form a position for the through hole of the base, so that the positioning member passing through the through hole of the base can bypass the coil to the static spring at the back of the static contact
  • the third positioning portion of the body is supported and positioned.
  • the inner end of the through hole abuts against the static spring body facing the back of the stationary contact or at the static spring body near the back of the stationary contact.
  • the through hole has a circular or square or triangular or polygonal or elliptical cross section.
  • the through hole is gradually reduced from the outer end to the inner end.
  • the edge of the static spring body of the static spring is provided with at least one hook that is integrally extended outwardly and bent by the static spring body, and the hook is embedded in the base.
  • the bending angle of the hook is approximately 90 degrees.
  • the hook is gradually increased from the root toward the free end.
  • the present invention employs, in the static spring body, an elongated protrusion portion corresponding to the length direction of the base, the protrusion portion extending outside the base as a second positioning portion during injection molding; in the base, A through hole penetrating the base in the thickness direction is provided at a position corresponding to the back surface of the static spring body on which the static contact is mounted, so that the back surface of the static spring body on which the static contact is mounted is used as the third positioning portion during injection molding. It can be supported and positioned by a positioning member passing through the through hole of the base.
  • the invention changes the position of the stationary spring contact position along the longitudinal direction of the base to the way of exposing the base plastic, the protruding terminal does not need to be precisely matched with the mold cavity, thereby reducing the risk of mold damage; the present invention is in the static spring
  • the contact position is supported and positioned by providing a through hole on the base, which greatly improves the consistency and stability of the contact position.
  • the present invention employs at least one hook extending outwardly and bent by the static spring body at the edge of the static spring body of the static spring, and embedding the hook in the base.
  • the invention further increases the positioning stability of the contact surface position of the static spring after injection molding by adding a positioning hook on the contact surface of the static spring; and by cooperating with the second positioning portion and the third positioning portion It can ensure that the position of the contact surface of the static spring will not be deformed even if it is impacted by the liquid plastic during injection molding, which greatly reduces the difficulty of designing the position of the gate of the base and the design of the mold structure, which is beneficial to reducing production cost and improving production efficiency.
  • the consistency of the position of the static spring contact in the injection process and after the injection can be greatly improved, and the contact gap of the product and the consistency of the overtravel parameters can be effectively improved, thereby improving the product quality.
  • FIG. 1 is a schematic structural view of a prior art static spring strip
  • FIG. 2 is a schematic view of a prior art static spring and a coil
  • FIG. 3 is a schematic view of a prior art static spring mated with a coil (relative to the inverted state of the structure of FIG. 2);
  • FIG. 4 is a schematic structural view of a prior art static spring, coil and base injection molded
  • FIG. 5 is a schematic structural view of a prior art static spring, a coil and a base injection molded integrally with respect to the structure of FIG. 4;
  • FIG. 6 is a schematic structural view of a static spring strip according to an embodiment of the present invention.
  • FIG. 7 is a perspective view showing a three-dimensional structure of a static spring and a coil according to an embodiment of the present invention.
  • Figure 8 is a plan view of the structure shown in Figure 7;
  • FIG. 9 is a perspective view showing a three-dimensional structure of a static spring, a coil and a base of an embodiment of the present invention.
  • Figure 10 is a plan view of the structure shown in Figure 9;
  • Figure 11 is a cross-sectional view showing the injection molding of the static spring, the coil and the base in an embodiment of the present invention
  • FIG. 12 is a schematic structural view showing the injection molding of a static spring, a coil and a base according to an embodiment of the present invention
  • Figure 13 is a schematic view showing the structure of the static spring, the coil and the base of the embodiment of the present invention (after cutting the protruding portion);
  • Fig. 14 is a perspective view showing the three-dimensional structure of the static spring and the coil (after the bent hook is formed) according to the embodiment of the present invention.
  • an ultra-small electromagnetic relay with high static positioning accuracy of the present invention includes a static spring 1 , a coil 2 and a base 3 which are integrally connected by injection molding;
  • the static spring 1 includes a static spring body 11 for mounting the stationary contact 4 and a static spring take-out terminal 12 extending from the static spring body to the outside of the base;
  • the static spring lead-out terminal 12 is provided at a position corresponding to the width direction edge of the base 3 a first positioning portion 121 for positioning a static spring during injection molding;
  • the static spring body 11 is provided with an elongated protruding portion 111 corresponding to a length direction of the base, the protruding portion 111 extending beyond the base a second positioning portion at the time of injection molding; in the base 3, at a position corresponding to the back surface of the static spring body where the static contact 4 is mounted, a through hole 31 penetrating the base in the thickness direction is provided to make the static spring The back surface of the body 11 on which the stationary contact
  • the projection portion 111 extending outside the base and serving as the second positioning portion at the time of injection molding can be cut to expose or not expose the outer side in the longitudinal direction of the base after the injection molding is completed. That is, after the injection molding of the base 3 is completed, the extended projection portion 111 is cut, and the protruding portion 111 after the cutting is exposed to the outside in the longitudinal direction of the base or the outer side in the longitudinal direction of the base.
  • the coil 2 is located between the static spring body 11 of the static spring and the base 3.
  • the coil 2 is configured to form a position for the through hole 31 of the base so that the positioning member through the through hole of the base can bypass
  • the coil 2 supports and positions the third positioning portion 112 of the static spring body 11 on the back surface of the stationary contact 4.
  • the inner end of the through hole 31 abuts against the static spring body 11 facing the back surface of the stationary contact 4 or at the static spring body 11 near the back surface of the stationary contact 4.
  • the cross section of the through hole 31 is circular.
  • the cross section of the through hole may be square or triangular or other suitable shapes such as a polygon or an ellipse.
  • the through hole 31 is gradually reduced from the outer end to the inner end; the cross-sectional area of the through hole 31 is such that the area of the contact static spring is small (ie, the area on the inner side is small), and the outer position of the base is large.
  • the tapered shape is formed to facilitate the release of the mold.
  • the through hole is plastically isolated from the coil and the non-contact surface portion of the static spring.
  • the edge of the static spring body 11 of the static spring is provided with a hook 113 which is integrally extended outwardly and bent by the static spring body, and the hook 113 is embedded in the base 3. Multiple hooks can also be set as needed.
  • the bending angle of the hook 113 is approximately 90 degrees, and of course, other bending angles smaller than 90 degrees, such as 80 degrees, 65 degrees, and the like.
  • the hook 113 gradually increases from the root toward the free end, that is, the hook is a reverse cone having a small width close to the contact surface and a large width away from the contact surface. In this case, most of the hooks away from the contact surface are hidden in the base plastic.
  • the hooks are plastically isolated from the metal parts of other parts.
  • the ultra-small electromagnetic relay with high static positioning accuracy of the present invention adopts an extended protrusion 111 in the static spring body 11 corresponding to the longitudinal direction of the base, and the protruding portion 111 extends to the base 3 is a second positioning portion at the time of injection molding; in the base 3, at a position corresponding to the back surface of the static spring body 11 on which the stationary contact is mounted, a through hole 31 penetrating the base in the thickness direction is provided The back surface of the static spring body to which the static contact is mounted is used as the third positioning portion 112 at the time of injection molding, and can be supported and positioned by the positioning member passing through the through hole 31 of the base.
  • the invention changes the position of the stationary spring contact position along the longitudinal direction of the base to the way of exposing the base plastic, the protruding terminal does not need to be precisely matched with the mold cavity, thereby reducing the risk of mold damage; the present invention is in the static spring
  • the contact position is supported and positioned by providing a through hole on the base, which greatly improves the consistency and stability of the contact position.
  • the ultra-small electromagnetic relay with high static positioning accuracy of the present invention adopts at least one hook 113 which is integrally extended and bent by the static spring body at the edge of the static spring body 11 of the static spring, and A hook 113 is embedded in the base 3.
  • the invention further increases the positioning stability of the contact surface position of the static spring after injection molding by adding a positioning hook on the contact surface of the static spring; and by cooperating with the second positioning portion and the third positioning portion It can ensure that the position of the contact surface of the static spring will not be deformed even if it is impacted by the liquid plastic during injection molding, which greatly reduces the difficulty of designing the position of the gate of the base and the design of the mold structure, which is beneficial to reducing production cost and improving production efficiency.
  • the consistency of the position of the static spring contact in the injection process and after the injection can be greatly improved, and the contact gap of the product and the consistency of the overtravel parameters can be effectively improved, thereby improving the product quality.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

一种静触点定位精度高的超小型电磁继电器，包括通过注塑连成一体的静簧（1）、线圈（2）和底座（3）；静簧包括用来安装静触点（4）的静簧本体（11）和由静簧本体延伸到底座外的静簧引出端子（12）；静簧引出端子中，在对应于底座的宽度方向边缘的位置处设有用来注塑时的第一定位部（121）；静簧本体中，在对应于底座的长度方向设有延长的凸伸部（111），该凸伸部延伸至底座之外而作为注塑时的第二定位部；底座中，在对应于静簧本体的安装有静触点的背面位置处，设有沿着厚度方向贯穿于底座的通孔（31），以使得静簧本体的安装有静触点的背面作为注塑时的第三定位部（112），而可以由通过底座的通孔的定位件予以支撑定位。可以大大提高静簧触点位置在注塑过程以及注塑之后的一致性，有效提高产品的触点间隙、超行程参数的一致性，进而改善产品质量。

Description

一种静触点定位精度高的超小型电磁继电器 技术领域
本发明涉及继电器技术领域，特别是涉及一种静触点定位精度高的超小型电磁继电器。
背景技术
现有超小型继电器，其静簧与底座、线圈往往是通过一体组合式注塑形成，以达到减少体积及提高绝缘能力的效果。在静簧与底座、线圈注塑之前，静触点已经焊接于静簧之上。因此，如何保证静簧在注塑之时的定位精度，进而保证静触点的位置精度对产品的一致性影响很大。
现有技术的一种超小型电磁继电器如图1至图5所示，图1为现有技术的静簧条带的结构示意图，图2为现有技术的静簧与线圈相配合的示意图，图3为现有技术的静簧与线圈相配合(相对于图2结构翻转状态)的示意图，图4为现有技术的静簧、线圈与底座注塑成一体的结构示意图，图5为现有技术的静簧、线圈与底座注塑成一体(相对于图4结构翻转状态)的结构示意图，其中，静簧100的触点面101上已经焊接有静触点102，将静簧100与线圈103配合在一起后，通过注塑成型方式使静簧100、线圈103与底座104形成一体结构，这种超小型电磁继电器，静簧100的触点部位在与线圈103通过注塑方式形成底座结构时，静簧100在模具中的定位位置一般是在静簧靠底座外侧的边缘，现有技术是采用二处定位的方式来实现静簧100的触点102定位，其中，第一个定位是处在底座宽度方向的静簧引出端子处，相当于在静簧100的引出端子处设有第一定位部105，第二个定位是处在底座的长度方向的局部引出端位置，相当于在静簧100的触点面101的侧端设有第二定位部106，由于没有实现对静簧100的触点中心位置的直接定位，这种定位方式存在以下缺陷：
1、定位不够完整和稳固，在静簧的触点位置没有进行直接定位，若静簧在该位置有轻微变形翘起，没通过定位进行矫正，则会导致注塑成底座之后触点的位置一致性不好，影响继电器的触点间隙、超行程等参数的一致性；不利于提高产品的生产效率以及性能一致性。
2、静簧的触点位置定位不稳固会导致底座注塑时该处受到模具浇口射出的液态塑料流动的冲击，使静簧在模具开合的方向上发生变形，与模具产生缝隙，导致该处产生注塑毛边，影响产品性能质量；针对此缺陷现有技术的做法一般是通过改变底座零件的浇口结构和位置，或者改变注塑工艺参数来改进，减少液态塑料直接冲击静簧的触点位置，而这种改变将大大增加了底座设计、模具设计以及生产上的管控难度。
3、由于静簧面位置接近模具型腔(静簧触点位置突出的端子即第二定位部106在底座长度方向上被塑料包覆的部位)，容易导致静簧与模具干涉，损坏模具，影响制造成本及效率。
发明内容
本发明的目的在于克服现有技术之不足，提供一种静触点定位精度高的超小型电磁继电器，通过对静簧和底座的结构进行更改，可以大大提高静簧触点位置在注塑过程以及注塑之后的一致性，有效提高产品的触点间隙、超行程参数的一致性，进而改善产品质量。
本发明解决其技术问题所采用的技术方案是：一种静触点定位精度高的超小型电磁继电器，包括通过注塑连成一体的静簧、线圈和底座；所述静簧包括用来安装静触点的静簧本体和由静簧本体延伸到底座外的静簧引出端子；所述静簧引出端子中，在对应于底座的宽度方向边缘的位置处设有用来注塑时的第一定位部；所述静簧本体中，在对应于底座的长度方向设有延长的凸伸部，该凸伸部延伸至底座之外而作为注塑时的第二定位部；所述底座中，在对应于静簧本体的安装有静触点的背面位置处，设有沿着厚度方向贯穿于底座的通孔，以使得静簧本体的安装有静触点的背面作为注塑时的第三定位部而可以由通过底座的通孔的定位件予以支撑定位。
所述延伸至底座之外而作为注塑时的第二定位部的凸伸部在注塑完成后可被切断成露出或不露出底座的长度方向外侧。
所述线圈处在静簧的静簧本体与底座之间，线圈被配置成对底座的通孔形成让位，以便通过底座通孔的定位件能够绕过线圈在静触点的背面对静簧本体的第三定位部予以支撑定位。
所述通孔的内侧一端抵在正对静触点的背面的静簧本体处或是抵在靠近静触点的背面的静簧本体处。
所述通孔的截面为圆形或方形或三角形或多边形或椭圆形。
所述通孔由外侧一端向内侧一端呈渐次缩小。
所述静簧的静簧本体的边缘设有至少一个由静簧本体一体向外延伸并弯折的弯钩，所述弯钩嵌置在所述底座中。
所述弯钩的折弯角度大致为90度。
所述弯钩由根部向自由端方向呈渐次增大。
与现有技术相比较，本发明的有益效果是：
1、本发明采用了在静簧本体中，在对应于底座的长度方向设有延长的凸伸部，该凸伸部延伸至底座之外而作为注塑时的第二定位部；在底座中，在对应于静簧本体的安装有静触点的背面位置处，设有沿着厚度方向贯穿于底座的通孔，以使得静簧本体的安装有静触点的背面作为注塑时的第三定位部而可以由通过底座的通孔的定位件予以支撑定位。本发明通过将静簧触点位置沿底座长度方向的凸出端子定位改为露出底座塑料的方式，该凸出端子不需与模具型腔精确配合，减少了模具损坏风险；本发明在静簧的触点位置通过在底座上设置一通孔进行支撑定位，大大提高了触点位置的一致性、稳定性。
2、本发明采用了在静簧的静簧本体的边缘设有至少一个由静簧本体一体向外延伸并弯折的弯钩，并将弯钩嵌置在所述底座中。本发明通过在静簧的触点面增加定位弯钩，进一步加大了静簧的触点面位置在注塑之后的定位稳定性；并通过与上述第二定位部、第三定位部相配合后，可以保证静簧的触点面位置即使受到注塑时液态塑料的冲击也不会产生形变，这 就大大降低了底座浇口位置设计以及模具结构设计的难度，有利于降低生产成本、提高生产效率，可以大大提高静簧触点位置在注塑过程以及注塑之后的一致性，有效提高产品的触点间隙、超行程参数的一致性，进而改善产品质量。
以下结合附图及实施例对本发明作进一步详细说明；但本发明的一种静触点定位精度高的超小型电磁继电器不局限于实施例。
附图说明
图1是现有技术的静簧条带的结构示意图；
图2是现有技术的静簧与线圈相配合的示意图；
图3是现有技术的静簧与线圈相配合(相对于图2结构翻转状态)的示意图；
图4是现有技术的静簧、线圈与底座注塑成一体的结构示意图；
图5是现有技术的静簧、线圈与底座注塑成一体(相对于图4结构翻转状态)的结构示意图；
图6是本发明实施例的静簧条带的结构示意图；
图7是本发明实施例的静簧与线圈相配合的立体构造示意图；
图8是图7所示结构的俯视图；
图9是本发明实施例的静簧、线圈与底座注塑成一体的立体构造示意图；
图10是图9所示结构的俯视图；
图11是本发明实施例的静簧、线圈与底座注塑成一体的剖视图；
图12是本发明实施例的静簧、线圈与底座注塑成一体的结构示意图；
图13是本发明实施例的静簧、线圈与底座注塑成一体(将凸伸部裁切后)的结构示意图；
图14是本发明实施例的静簧与线圈相配合(弯钩弯折成型后)的立体构造示意图。
具体实施方式
实施例
参见图6至图14所示，本发明的一种静触点定位精度高的超小型电磁继电器，包括通过注塑连成一体的静簧1、线圈2和底座3；所述静簧1包括用来安装静触点4的静簧本体11和由静簧本体延伸到底座外的静簧引出端子12；所述静簧引出端子12中，在对应于底座3的宽度方向边缘的位置处设有用来注塑时对静簧进行定位的第一定位部121；所述静簧本体11中，在对应于底座的长度方向设有延长的凸伸部111，该凸伸部111延伸至底座之外而作为注塑时的第二定位部；所述底座3中，在对应于静簧本体的安装有静触点4的背面位置处，设有沿着厚度方向贯穿于底座的通孔31，以使得静簧本体11的安装有静触点4的背面作为注塑时的第三定位部112而可以由通过底座的通孔31的定位件予以支撑定位。本实施例中，静簧1的静簧引出端子12是沿着底座的宽度方向伸出，底座的厚度也是底座的高度。
本实施例中，所述延伸至底座之外而作为注塑时的第二定位部的凸伸部111在注塑完成 后可被切断成露出或不露出底座的长度方向外侧。也就是说，在底座3注塑完毕之后，将上述延伸出来的凸伸部111进行切断，切断之后的凸伸部111可露出底座长度方向外侧，也可以不露出底座长度方向外侧。
本实施例中，所述线圈2处在静簧的静簧本体11与底座3之间，线圈2被配置成对底座的通孔31形成让位，以便通过底座通孔的定位件能够绕过线圈2在静触点4的背面对静簧本体11的第三定位部112予以支撑定位。
本实施例中，通孔31的内侧一端抵在正对静触点4的背面的静簧本体11处或是抵在靠近静触点4的背面的静簧本体11处。
本实施例中，通孔31的截面为圆形，当然，通孔的截面也可以为方形或三角形或多边形或椭圆形等其他合适的形状。
本实施例中，通孔31由外侧一端向内侧一端呈渐次缩小；通孔31的截面面积为接触静簧定位处的面积小(即靠内侧的面积小)，靠底座的外部位置面积大，形成锥形形状，起到便于脱模的效果。通孔与线圈以及静簧的非触点面部位均有塑料隔离。
本实施例中，静簧的静簧本体11的边缘设有一个由静簧本体一体向外延伸并弯折的弯钩113，所述弯钩113嵌置在所述底座3中。根据需要，也可以设置多个弯钩。
本实施例中，弯钩113的折弯角度大致为90度，当然，也可以是小于90度的其他弯折角度，比如80度，65度等。
本实施例中，弯钩113由根部向自由端方向呈渐次增大，即弯钩为靠近触点面宽度小，远离触点面位置宽度大的倒锥形。这样的话，弯钩远离触点面的大部分都被掩盖于底座塑料之中。弯钩与其它部位的金属件都有塑料隔离。
本发明的一种静触点定位精度高的超小型电磁继电器，采用了在静簧本体11中，在对应于底座的长度方向设有延长的凸伸部111，该凸伸部111延伸至底座3之外而作为注塑时的第二定位部；在底座3中，在对应于静簧本体11的安装有静触点的背面位置处，设有沿着厚度方向贯穿于底座的通孔31，以使得静簧本体的安装有静触点的背面作为注塑时的第三定位部112而可以由通过底座的通孔31的定位件予以支撑定位。本发明通过将静簧触点位置沿底座长度方向的凸出端子定位改为露出底座塑料的方式，该凸出端子不需与模具型腔精确配合，减少了模具损坏风险；本发明在静簧的触点位置通过在底座上设置一通孔进行支撑定位，大大提高了触点位置的一致性、稳定性。
本发明的一种静触点定位精度高的超小型电磁继电器，采用了在静簧的静簧本体11的边缘设有至少一个由静簧本体一体向外延伸并弯折的弯钩113，并将弯钩113嵌置在所述底座3中。本发明通过在静簧的触点面增加定位弯钩，进一步加大了静簧的触点面位置在注塑之后的定位稳定性；并通过与上述第二定位部、第三定位部相配合后，可以保证静簧的触点面位置即使受到注塑时液态塑料的冲击也不会产生形变，这就大大降低了底座浇口位置设计以及模具结构设计的难度，有利于降低生产成本、提高生产效率，可以大大提高静簧触点位置在注塑过程以及注塑之后的一致性，有效提高产品的触点间隙、超行程参数的一致性，进而改善产品质量。
上述只是本发明的较佳实施例，并非对本发明作任何形式上的限制。虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明。任何熟悉本领域的技术人员，在不脱离本发明技术方案范围的情况下，都可利用上述揭示的技术内容对本发明技术方案作出许多可能的变动和修饰，或修改为等同化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落在本发明技术方案保护的范围内。

Claims (9)

  1. 一种静触点定位精度高的超小型电磁继电器，包括通过注塑连成一体的静簧、线圈和底座；所述静簧包括用来安装静触点的静簧本体和由静簧本体延伸到底座外的静簧引出端子；所述静簧引出端子中，在对应于底座的宽度方向边缘的位置处设有用来注塑时的第一定位部；其中：所述静簧本体中，在对应于底座的长度方向设有延长的凸伸部，该凸伸部延伸至底座之外而作为注塑时的第二定位部；所述底座中，在对应于静簧本体的安装有静触点的背面位置处，设有沿着厚度方向贯穿于底座的通孔，以使得静簧本体的安装有静触点的背面作为注塑时的第三定位部而可以由通过底座的通孔的定位件予以支撑定位。
  2. 根据权利要求1所述的静触点定位精度高的超小型电磁继电器，其中：所述延伸至底座之外而作为注塑时的第二定位部的凸伸部在注塑完成后可被切断成露出或不露出底座的长度方向外侧。
  3. 根据权利要求1所述的静触点定位精度高的超小型电磁继电器，其中：所述线圈处在静簧的静簧本体与底座之间，线圈被配置成对底座的通孔形成让位，以便通过底座通孔的定位件能够绕过线圈在静触点的背面对静簧本体的第三定位部予以支撑定位。
  4. 根据权利要求1所述的静触点定位精度高的超小型电磁继电器，其中：所述通孔的内侧一端抵在正对静触点的背面的静簧本体处或是抵在靠近静触点的背面的静簧本体处。
  5. 根据权利要求4所述的静触点定位精度高的超小型电磁继电器，其中：所述通孔的截面为圆形或方形或三角形或多边形或椭圆形。
  6. 根据权利要求4或5所述的静触点定位精度高的超小型电磁继电器，其中：所述通孔由外侧一端向内侧一端呈渐次缩小。
  7. 根据权利要求1所述的静触点定位精度高的超小型电磁继电器，其中：所述静簧的静簧本体的边缘设有至少一个由静簧本体一体向外延伸并弯折的弯钩，所述弯钩嵌置在所述底座中。
  8. 根据权利要求7所述的静触点定位精度高的超小型电磁继电器，其中：所述弯钩的折弯角度大致为90度。
  9. 根据权利要求7或8所述的静触点定位精度高的超小型电磁继电器，其中：所述弯钩由根部向自由端方向呈渐次增大。
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