WO2019174119A1 - 一种用于安全继电器的动簧片及其安全继电器 - Google Patents

一种用于安全继电器的动簧片及其安全继电器 Download PDF

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Publication number
WO2019174119A1
WO2019174119A1 PCT/CN2018/086657 CN2018086657W WO2019174119A1 WO 2019174119 A1 WO2019174119 A1 WO 2019174119A1 CN 2018086657 W CN2018086657 W CN 2018086657W WO 2019174119 A1 WO2019174119 A1 WO 2019174119A1
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WO
WIPO (PCT)
Prior art keywords
push
safety relay
base
spring
card
Prior art date
Application number
PCT/CN2018/086657
Other languages
English (en)
French (fr)
Inventor
吴温龙
鲁道夫
谭忠华
马特
朱艺青
Original Assignee
厦门宏发电声股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 厦门宏发电声股份有限公司 filed Critical 厦门宏发电声股份有限公司
Priority to DE112018007265.7T priority Critical patent/DE112018007265T5/de
Publication of WO2019174119A1 publication Critical patent/WO2019174119A1/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
    • 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
    • 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
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • 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
    • H01H50/642—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement intermediate part being generally a slide plate, e.g. a card
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances

Definitions

  • the present disclosure relates to the field of relay technology, and in particular to a moving reed for a safety relay and a safety relay thereof.
  • a relay is an electrical control device that is an electrical device that causes a predetermined step change in a controlled output quantity in an electrical output circuit when a change in an input amount (eg, an amount of excitation) reaches a prescribed requirement. It has an interaction between the control system (also known as the input loop) and the controlled system (also known as the output loop).
  • the relay is actually an "automatic switch” that uses a small current to control the operation of a large current. It is usually used in an automatic control circuit, and functions as an automatic adjustment, safety protection, and conversion circuit in the circuit.
  • Safety relays also known as forced-guide relays
  • the forced guiding is mainly achieved by the pushing card setting the limiting slot, and the moving spring is located in the positioning groove, that is, the moving spring is located at two opposite groove walls of the limiting slot of the pushing card. Meanwhile, when the push card moves forward, one groove wall of the push card pushes the moving reed forward, and when the push card moves backward, the other groove wall of the push card pushes the moving reed to move backward.
  • the safety relay of this structure mainly has the following drawbacks:
  • the purpose of the present disclosure is to overcome the deficiencies of the related art, and to provide a moving reed for a safety relay and a safety relay thereof, which are ensured by the improvement of the moving reed structure and the push card structure matched with the moving reed.
  • it has the advantages of easy assembly, high assembly precision, easy scrapping of parts in assembly, and prevention of abnormal relay operation and improved safety of relays.
  • a first aspect of the present disclosure provides a moving spring for a safety relay, comprising a reed body in a straight shape; a side of a head of the reed body is fixed to a movable contact, and a tail portion of the reed body is provided a connecting portion fixed to the moving spring take-up piece; the head of the reed body is further provided with an outwardly extending extension, the extending portion including the other side of the end of the head of the reed body bent to be substantially 90 degrees
  • the first extending portion extending in the direction and the second extending portion extending from the end of the first extending portion toward the tail portion of the reed body to extend in a substantially 90-degree direction.
  • the extension has a width dimension that is the same as a width dimension of the head of the reed body.
  • the width of the head of the reed body is greater than the width of the middle portion of the reed body and the tail portion of the reed body.
  • a second aspect of the present disclosure provides a safety relay including a magnetic circuit portion, a moving spring portion, a static spring portion, a push card, and a base; the moving spring portion, the static spring portion, the push card, and the magnetic circuit portion are respectively mounted on the base And the movable contact is in a matching position, the push card is connected between the magnetic circuit portion and the moving spring portion, and the moving spring portion and the static spring portion have a plurality of contact groups; the moving spring portion includes the above movement The reed and the moving spring lead the foot, the tail of the reed body is fixed to the moving spring lead, and the moving spring lead is inserted into the base; the pushing card is provided with a pushing arm, and the pushing arm of the pushing card is adapted to a recess defined by the end of the head of the reed body, the first extension portion, and the second extension portion; when a side of the push arm of the push card is pushed toward the head of the reed body At the end of the portion, the moving spring moves
  • the push arm of the push card is gap-fitted between the end of the head of the reed body and the second extension.
  • One side of the push arm of the push card and/or the other side of the push arm of the push card is an arcuate face that projects outwardly from the center.
  • a bottom surface of the first extension portion cooperates with a top surface of the push arm of the push card to restrict the push card from contacting the outer casing of the relay in a direction perpendicular to the movement of the push card, the outer case being fixed on the base to magnetically
  • the road portion, the moving spring portion, and the contact portion of the static spring portion, and the push card are accommodated.
  • the push card is provided with a slot for engaging the movable spring, and the push arm is disposed in the slot.
  • the recess of the moving spring is caught downward on the pushing arm of the pushing card.
  • the moving spring is hung on the push card, thereby preventing the moving spring and the static spring.
  • the error is turned on to improve the safety performance of the safety relay.
  • the middle of the outer casing is provided with a downward rib along the moving direction of the push card; the middle of the base is provided with a groove along the moving direction of the push card; when the outer casing is fixed with the base The rib of the outer casing fits in the groove of the base.
  • the ribs of the outer casing and the grooves of the base are respectively arranged in corresponding sections.
  • a first retaining wall is disposed in the middle of the base along the moving direction of the push card; the plurality of contact sets are symmetrically disposed on two sides of the first retaining wall, and the recess is disposed on the first retaining wall the top of.
  • a second retaining wall is further disposed at a position between two adjacent contact groups corresponding to the same side of the first retaining wall to prevent splashes between the contacts from interfering with each other.
  • a third retaining wall is further disposed at a position corresponding to the moving spring and the static spring of the same contact group.
  • the base is provided with a base cavity for mounting a magnetic circuit portion; and in the base cavity, a track groove for pushing the magnetic circuit portion into the base cavity is provided along a horizontal direction.
  • FIG. 1 is a perspective view showing a three-dimensional structure of a movable spring piece (with a moving spring lead-out leg) of the present disclosure
  • FIG. 2 is a perspective structural view of a safety relay (without a housing) of the present disclosure
  • Figure 3 is a plan view of the safety relay (without housing) of the present disclosure
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is an enlarged schematic view of a portion B of Figure 4.
  • FIG. 6 is a schematic view showing the distribution of contact groups of the safety relay of the present disclosure.
  • FIG. 7 is a perspective structural view of a base of a safety relay of the present disclosure.
  • Figure 8 is a top plan view of the base of the safety relay of the present disclosure.
  • Figure 9 is a schematic view showing the configuration of the outer casing (the casing cavity facing downward) of the safety relay of the present disclosure
  • Figure 10 is a schematic view showing the configuration of the outer casing (the casing cavity facing forward) of the safety relay of the present disclosure
  • FIG. 11 is a perspective structural view of a push card of a safety relay of the present disclosure.
  • Figure 12 is a plan view of a push card of the safety relay of the present disclosure.
  • Figure 13 is a schematic illustration of the magnetic circuit portion of the safety relay of the present disclosure.
  • a moving spring 1 for a safety relay of the present disclosure including a reed body 10 in the shape of a straight sheet; one side of the head 11 of the reed body is fixed to the movable contact 12, and the reed body
  • the tail portion 13 is provided with a connecting portion for fixing to the moving spring take-up leg 14, and the connecting portion may be provided as a riveting hole;
  • the head portion 11 of the reed body is further provided with an outwardly extending extending portion, the extending portion including along
  • the other end of the end 15 of the head of the reed body is bent into a first extending portion 16 extending in a substantially 90-degree direction and bent from the end of the first extending portion toward the tail portion of the reed body to a direction of substantially 90 degrees.
  • An extended second extension 17 17.
  • the extension portions i.e., the first extension portion 16 and the second extension portion 17
  • the extension portions may have the same width dimension as the head portion 11 of the reed body.
  • the width dimension of the head portion 11 of the reed body is greater than the width dimension of the middle portion of the reed body and also greater than the width dimension of the tail portion 13 of the reed body.
  • a safety relay of the present disclosure includes a magnetic circuit portion 2, a moving spring portion, a static spring portion 3, a push card 5, and a base 4; a moving spring portion, a static spring portion 3, a push card 5, and a magnetic
  • the road portions 2 are respectively mounted on the base 4, and the movable contact 12 of the moving spring portion and the stationary contact 31 of the static spring portion 3 are in a matching position, and the push card 5 is connected to the magnetic circuit portion 2 and the moving spring portion.
  • the moving spring portion and the static spring portion have a plurality of contact groups.
  • the present embodiment is provided with six contact groups, wherein four contact groups adopt a normally open structure, and the other two contact groups adopt a normally closed structure (as shown in FIG. 6).
  • the moving spring portion may include the moving spring piece 1 and the moving spring take-up leg 14, the tail portion 13 of the spring body is fixed to the moving spring lead-out leg 14, and the riveting tongue is provided on the moving spring lead-out leg 14 through the riveting of the reed body
  • the hole is matched with the riveted tenon of the moving spring lead-out leg, and the riveting manner is adopted to fix the moving spring piece 1 and the moving spring lead-out leg 14 together, and the moving spring lead-out leg 14 is inserted on the base 4.
  • the pusher card 5 is provided with a push arm 51 that fits in a recess 18 surrounded by the end 15, the first extension 16, and the second extension 17 of the head of the reed body.
  • the movable spring 1 moves toward the stationary contact 31 when pushing the other side of the push 51 arm of the push card 5
  • the moving spring piece 1 moves toward the direction away from the stationary contact 31.
  • the push arm 51 of the push card is gap-fitted between the end 15 of the head of the reed body and the second extension 17.
  • one side of the push arm 51 of the push card and/or the other side of the push arm of the push card may be an arcuate face that protrudes outward from the center.
  • the bottom surface of the first extension portion 16 cooperates with the top surface of the push arm 51 of the push card to restrict the push card 5 from coming into contact with the outer casing 6 of the relay in a direction perpendicular to the movement of the push card.
  • the outer casing 6 is fixed to the base 4 to accommodate the magnetic circuit portion 2, the moving spring portion, and the contact portion of the static spring portion, and the push card 5.
  • the push card 5 is provided with a slot 52 for engaging the movable spring, and the push arm 51 is disposed in the slot 52.
  • two pushing arms 51 are disposed in the slot 52, and the top surfaces of the two pushing arms 51 respectively cooperate with the first extending portion 16.
  • the notch 18 of the moving spring piece 1 is caught downward on the pushing arm 51 of the push card 5.
  • the moving spring piece 1 is hung on the push card 5, thereby preventing The false connection between the moving reed and the static reed is improved to improve the safety performance of the safety relay.
  • the middle of the outer casing 6 is provided with a downward rib 61 in the moving direction along the push card.
  • a groove 41 is provided along the moving direction of the push card.
  • the rib 61 of the outer casing and the groove 41 of the base are respectively arranged in a plurality of sections corresponding to each other.
  • a first retaining wall 42 is provided along the moving direction of the push card.
  • the plurality of contact groups are respectively symmetrically disposed on both sides of the first retaining wall 42, and the recess 41 is disposed at the top of the first retaining wall 42.
  • Three contact groups are distributed on each side of the first retaining wall 42.
  • a second retaining wall 43 is further provided to prevent splashes between the contacts. Interfere with each other. That is, two second retaining walls 43 are respectively disposed on both sides of the first retaining wall for separating the three contact groups on each side.
  • a third retaining wall 44 is further provided at a position corresponding to the moving spring piece and the static spring piece of the same contact group. That is, three third retaining walls 43 are respectively disposed on both sides of the first retaining wall for separating the dynamic and static springs of the three contact groups on each side.
  • the base 4 is provided with a base chamber 45 for mounting the magnetic circuit portion 2.
  • a track groove 46 for pushing the magnetic circuit portion 2 into the base cavity is provided in the horizontal direction.
  • Another aspect of the present disclosure provides a moving reed for a safety relay and a safety relay thereof, wherein the head portion 11 of the reed body of the moving reed is further provided with an outwardly extending extension, the extension including the edge The other end of the end 15 of the head of the reed body is bent into a first extension 16 extending in a substantially 90-degree direction and bent from the end of the first extension toward the tail of the reed body to substantially 90 degrees.
  • the second extending portion 17 extending in the direction is surrounded by a tip end 15 of the head portion of the reed body, the first extending portion 16, and the second extending portion 17 to form a notch 18, so that the moving spring piece forms an inverted J-shaped structure, and
  • a push arm 51 is arranged on the push card, and the push arm 51 of the push card is fitted in the recess 18 of the movable spring, the recess opening is fitted downward on the push arm, so that the movable spring is hung on the push card Pushing the arm to realize the forced guiding action of the relay in the front-rear direction; that is, when the push card 5 moves forward, the moving spring is pushed forward, and when the push card moves backward, the bent portion of the moving spring ( That is, the second extension portion) pulls the push arm of the push card, followed by the push card Backward movement, when the movement contact adhesions, push the card can not continue to move, thus ensuring the chain of mutual contacts between the groups.
  • the movable reed for safety relay of the present disclosure and its safety relay adopt the cooperation of the bottom surface of the first extending portion 16 with the top surface of the pushing arm 51 of the push card, thereby restricting the movement of the push card 5 along the push card.
  • the direction perpendicular to the contact with the outer casing of the relay that is, equivalent to the upper limit of the push card 5, prevents the push card from rubbing against the outer casing, causing the relay to operate abnormally.
  • the movable reed for the safety relay of the present disclosure and the safety relay thereof use the moving spring 1 to be hung on the pushing arm 51 of the pushing card, and when the tail portion 13 (ie, the root portion) of the reed body breaks, the moving spring The sheet 1 will still be hung in the push arm 51 of the push card, and the reed body will not fall downwards, so that the accidental connection will not occur, and the safety of the safety relay can be ensured. If the relevant safety relay breaks at the root of the reed, the reed may have the reed portion falling obliquely into the base, and then the moving spring lead and the static spring portion are connected, which affects the safety of the relay.
  • the movable reed for safety relay of the present disclosure and its safety relay adopt the middle of the outer casing 6, and are provided with downward ribs 61 in the moving direction along the push card; in the middle of the base 4, along the The direction of movement of the card is pushed, and a groove 41 is provided; when the outer casing 6 is fixed to the base 4, the rib 61 of the outer casing fits in the groove 41 of the base.
  • the present disclosure plays three roles by the cooperation of the rib 61 and the groove 41. First, the rib 61 plays a guiding restriction on the movement of the push card 5, and reduces the deflection of the push card, resulting in the contact super The stroke appears to be small, which affects the life of the relay.
  • the rib 61 cooperates with the base to increase the creepage distance and air gap between the left and right contact groups (ie, the two sides of the first retaining wall).
  • the rib 61 Pressing on the base 4 serves as a limit on the outer casing 6, ensuring the distance between the surface of the outer casing and the pusher card and the moving spring, and ensuring the flexibility of the push card and the moving spring.
  • the movable reed for safety relay of the present disclosure and its safety relay are disposed in the base 4 at a position between two adjacent contact groups corresponding to the same side of the first retaining wall,
  • the second retaining wall 43 can prevent the spatters between the contacts from interfering with each other, reduce the spatter pollution between the contact groups, and ensure the reliability of the contact contact.
  • the present disclosure also employs a third retaining wall 44 in the base 4 at a position corresponding to the movable spring and the stationary spring of the same contact group, which can protect the static spring and increase the contact between the contacts.
  • the third retaining wall limits the static spring to move in the direction of the moving spring, ensuring that the gap of the normally closed end contact is large enough. Conversely, the normally closed end sticks to the dead end, which can ensure the normally open end.
  • Contact gap; the third retaining wall can also increase the creepage distance between the contacts and increase the insulation between the contacts.
  • the movable reed for safety relay of the present disclosure and its safety relay employ a track groove 46 provided in the base cavity 45 along the horizontal direction for pushing the magnetic circuit portion into the base cavity.
  • the base cavity 45 adopts a rail structure, and when the magnetic circuit portion is mounted, the base track groove has a guiding effect on the yoke 21 of the magnetic circuit portion 2, which can prevent the enameled wire from being damaged by the collision of the coil loading process with the base.
  • the present disclosure is further provided with an outwardly extending extension for the head of the reed body of the moving spring, the extension comprising the other side of the end of the head of the reed body being bent to approximately 90 a first extending portion extending in a direction and a second extending portion extending from a distal end of the first extending portion toward a tail portion of the reed body to extend in a substantially 90-degree direction, the end of the head of the reed body,
  • An extension portion and a second extension portion enclose a notch (equivalent to forming the movable spring to form an inverted J-shaped structure), and a push arm is arranged on the push card to adapt the push arm of the push card to the movable spring piece In the notch (the recess is actually engaged with the opening on the push arm, or the movable spring is hung on the push arm of the push card), thereby realizing the forced guiding action of the relay in the front and rear direction; that is, pushing When the
  • the present disclosure utilizes the bottom surface of the first extension portion to cooperate with the top surface of the push arm of the push card, thereby limiting the push card from contacting the outer casing of the relay in a direction perpendicular to the motion of the push card, ie, The upper part of the push card can be restrained to prevent the push card from rubbing against the outer casing, causing the relay to operate abnormally.
  • the moving spring since the moving spring is hung on the push arm of the push card, when the tail portion (ie, the root portion) of the spring body is broken, the moving spring will still hang in the push arm of the push card, the reed The body suspension does not fall downward, so there is no false connection, and the safety of the safety relay can be ensured. If the relevant safety relay breaks at the root of the reed, the reed may have the reed portion falling obliquely into the base, and then the moving spring lead and the static spring portion are connected, which affects the safety of the relay.
  • the present disclosure adopts the middle of the outer casing, and has a downward rib along the moving direction of the push card; in the middle of the base, a groove is provided along the moving direction of the push card; When the base is fixed, the ribs of the outer casing fit in the grooves of the base.
  • the present disclosure plays three roles by the cooperation of the rib and the groove: First, the rib acts as a guiding restriction on the movement of the push card, and reduces the deflection of the push card, resulting in a decrease in the overtravel of the contact.
  • the ribs and the base cooperate to increase the creepage distance and air gap between the left and right contact groups (ie, the two sides of the first retaining wall); third, the ribs are pressed against the base, To the limit of the outer casing, the distance between the surface of the outer casing and the push card and the moving spring is ensured, and the flexibility of the push card and the moving spring is ensured.
  • the present disclosure employs a second retaining wall at a position between two adjacent contact sets corresponding to the same side of the first retaining wall in the base to prevent spatter between the contacts Mutual interference, reduce spatter pollution between contact groups, and ensure the reliability of contact contact.
  • the present disclosure is provided with a third retaining wall at a position corresponding to the moving spring and the static spring of the same contact group in the base, which can protect the static spring and increase the contact between the contacts.
  • Insulation when the contact (normally open end) is stuck, the third retaining wall limits the static spring to move in the direction of the moving spring, ensuring that the gap of the normally closed end contact is large enough. Conversely, the normally closed end sticks to the dead end, which can ensure the normally open end.
  • Contact gap; the third retaining wall can also increase the creepage distance between the contacts and increase the insulation between the contacts.
  • the present disclosure employs a track groove in the horizontal direction for pushing the magnetic circuit portion into the base cavity in the base cavity.
  • the base cavity adopts a rail structure.
  • the base track groove has a guiding effect on the yoke of the magnetic circuit portion, which can prevent the enameled wire from being damaged by the collision of the coil loading process with the base.

Abstract

一种用于安全继电器的动簧片及其安全继电器，该动簧片包括直片形形状的簧片本体；簧片本体的头部的一面固接动触点，簧片本体的尾部设有用来与动簧引出片相固定的连接部；簧片本体的头部还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端的另一面弯折成大致90度方向延伸的第一延伸部以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部。

Description

一种用于安全继电器的动簧片及其安全继电器 技术领域
本公开涉及继电器技术领域，特别是涉及一种用于安全继电器的动簧片及其安全继电器。
背景技术
继电器(relay)是一种电控制器件，是当输入量(例如，激励量)的变化达到规定要求时，在电气输出电路中使被控量发生预定的阶跃变化的一种电器。它具有控制系统(又称输入回路)和被控制系统(又称输出回路)之间的互动关系。继电器实际上是用小电流去控制大电流运作的一种“自动开关”，通常应用于自动化的控制电路中，在电路中起着自动调节、安全保护、转换电路等作用。
安全继电器(也称为强制导向继电器)是继电器中的一种，安全继电器与普通继电器的不同之处在于，发生故障时能够做出有规则的动作，它具有强制导向接点结构，万一发生接点熔结现象时也能确保安全。相关技术的安全继电器，强制导向主要是通过推动卡设置限位槽，动簧片位于定位槽内来实现的，即，动簧片是位于推动卡的限位槽的两个相对的槽壁之间，当推动卡向前运动时，推动卡的一个槽壁推动动簧片向前运动，而当推动卡向后运动时，推动卡的另一个槽壁推动动簧片向后运动。这种结构的安全继电器主要存在如下弊端：
1、难以装配，装配精度难以保证，易造成不必要的零件报废；
2、推动卡易与外壳摩擦，造成继电器动作异常；
3、当动簧片根部出现断裂时，动簧片会倾斜地掉落到底座中，存在与静簧部分误接通的可能，影响了继电器的安全性。
发明内容
本公开的目的在于克服相关技术之不足，提供一种用于安全继电器的动簧片及其安全继电器，通过对动簧片结构以及对与动簧片相配合的推动卡结构的改进，在保证强制导向作用的同时，具有装配易实现，装配精度高，不易出现装配中的零件报废，以及能够防止继电器动作异常，提高继电器安全性的特点。
本公开的第一方面提供一种用于安全继电器的动簧片，包括直片形形状的簧片本体；簧片本体的头部的一面固接动触点，簧片本体的尾部设有用来与动簧引出片相固定的连接部；簧片本体的头部还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端的另一面弯折成大致90度方向延伸的第一延伸部以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部。
所述延伸部的宽度尺寸与簧片本体的头部的宽度尺寸相同。
所述簧片本体的头部的宽度尺寸大于簧片本体的中部、簧片本体的尾部的宽度尺寸。
本公开的第二方面提供一种安全继电器，包括磁路部分、动簧部分、静簧部分、推动卡 和底座；所述动簧部分、静簧部分、推动卡和磁路部分分别安装在底座上，并使动静触点处于相配合的位置，推动卡连接在磁路部分与动簧部分之间，且动簧部分、静簧部分具有多个触点组；所述动簧部分包括上述动簧片和动簧引出脚，所述簧片本体的尾部与动簧引出脚相固定，动簧引出脚插装在底座上；所述推动卡设有推动臂，推动卡的推动臂适配在由所述簧片本体的头部的末端、所述第一延伸部、所述第二延伸部所围成的凹口中；当推动卡的推动臂的一侧面推向所述簧片本体的头部的末端时，所述动簧片朝着静触点方向移动，当推动卡的推动臂的另一侧面推向所述第二延伸部时，所述动簧片朝着背离静触点方向移动，当动静触点出现粘连时，推动卡无法继续移动，从而保证了触点组之间的相互连锁。
所述推动卡的推动臂间隙配合在所述簧片本体的头部的末端与所述第二延伸部之间。
所述推动卡的推动臂的一侧面和/或推动卡的推动臂的另一侧面为中部向外凸出的弧形面。
所述第一延伸部的底面与推动卡的推动臂的顶面相配合，以限制推动卡沿着与推动卡运动相垂直的方向与继电器的外壳相接触，该外壳固定在底座上，以将磁路部分、动簧部分和静簧部分的触点部分、推动卡容纳在内。
所述推动卡设有用来配合动簧片插入的插槽，所述推动臂设在插槽中。
所述动簧片的凹口向下卡在所述推动卡的推动臂上，当簧片本体的尾部出现断裂时，动簧片挂在推动卡上，从而防止动簧片与静簧片之间误接通，提高安全继电器的安全性能。
所述外壳的中间，在沿着推动卡的移动方向，设有向下的凸筋；所述底座的中间，在沿着推动卡的移动方向，设有凹槽；当外壳与底座相固定时，外壳的凸筋配合在底座的凹槽中。
所述外壳的凸筋和底座的凹槽分别是设成对应配合的多段。
所述底座的中间，在沿着推动卡的移动方向，设有第一挡墙；所述多个触点组分别对称设在第一挡墙的两边，所述凹槽设在第一挡墙的顶部。
所述底座中，在对应于第一挡墙的同一边的两个相邻触点组之间的位置处，还设有第二挡墙，以防止触点间飞溅物相互干扰。
所述底座中，在对应于同触点组的动簧片与静簧片之间的位置处，还设有第三挡墙。
所述底座中，设有用来安装磁路部分的底座腔；在底座腔中，沿着水平方向设有用来将所述磁路部分推入底座腔的轨道槽。
附图说明
图1是本公开的动簧片(接有动簧引出脚)的立体构造示意图；
图2是本公开的安全继电器(未装外壳)的立体构造示意图；
图3是本公开的安全继电器(未装外壳)的俯视图；
图4是沿图3中A-A线的剖视图；
图5是图4中的B部放大示意图；
图6是本公开的安全继电器的触点组的分布示意图；
图7是本公开的安全继电器的底座的立体构造示意图；
图8是本公开的安全继电器的底座的俯视图；
图9是本公开的安全继电器的外壳(壳腔朝下)的构造示意图；
图10是本公开的安全继电器的外壳(壳腔朝前)的构造示意图；
图11是本公开的安全继电器的推动卡的立体构造示意图；
图12是本公开的安全继电器的推动卡的俯视图；
图13是本公开的安全继电器的磁路部分的示意图。
具体实施方式
图1示出了本公开的一种用于安全继电器的动簧片1，包括直片形形状的簧片本体10；簧片本体的头部11的一面固接动触点12，簧片本体的尾部13设有用来与动簧引出脚14相固定的连接部，该连接部可以设置成铆接孔；簧片本体的头部11还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端15的另一面弯折成大致90度方向延伸的第一延伸部16以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部17。
本实施例中，延伸部(即第一延伸部16和第二延伸部17)的宽度尺寸可以与簧片本体的头部11的宽度尺寸相同。
本实施例中，簧片本体的头部11的宽度尺寸大于簧片本体的中部的宽度尺寸，也大于簧片本体的尾部13的宽度尺寸。
参见图1至图13，本公开的一种安全继电器包括磁路部分2、动簧部分、静簧部分3、推动卡5和底座4；动簧部分、静簧部分3、推动卡5和磁路部分2分别安装在底座4上，并使动簧部分的动触点12和静簧部分3的静触点31处于相配合的位置，推动卡5连接在磁路部分2与动簧部分之间，且动簧部分、静簧部分具有多个触点组。作为例子，本实施例设有6个触点组，其中四个触点组采用常开结构，另外两个触点组采用常闭结构(如图6所示)。动簧部分可包括上述动簧片1和动簧引出脚14，簧片本体的尾部13与动簧引出脚14相固定，在动簧引出脚14上设置铆接凸苞，通过簧片本体的铆接孔与动簧引出脚的铆接凸苞的相配合，并采用铆接方式，使动簧片1和动簧引出脚14固定在一起，动簧引出脚14则插装在底座4上。推动卡5设有推动臂51，推动卡的推动臂51适配在由簧片本体的头部的末端15、第一延伸部16、第二延伸部17所围成的凹口18中。当推动卡5的推动臂51的一侧面推向簧片本体的头部的末端15时，动簧片1朝着静触点31方向移动，当推动卡5的推动51臂的另一侧面推向第二延伸部17时，动簧片1朝着背离静触点31方向移动，当动静触点出现粘连时，推动卡5无法继续移动，从而保证了触点组之间的相互连锁。
本实施例中，推动卡的推动臂51间隙配合在簧片本体的头部的末端15与第二延伸部17之间。
本实施例中，作为例子，推动卡的推动臂51的一侧面和/或推动卡的推动臂的另一侧面可以为中部向外凸出的弧形面。
本实施例中，第一延伸部16的底面与推动卡的推动臂51的顶面相配合，以限制推动卡 5沿着与推动卡运动相垂直的方向与继电器的外壳6相接触。外壳6固定在底座4上，以将磁路部分2、动簧部分和静簧部分的触点部分、推动卡5容纳在内。
本实施例中，推动卡5设有用来配合动簧片插入的插槽52，推动臂51设在插槽52中。
本实施例中，插槽52中设有两个推动臂51，两个推动臂51的顶面分别与第一延伸部16相配合。
本实施例中，动簧片1的凹口18向下卡在推动卡5的推动臂51上，当簧片本体的尾部13出现断裂时，动簧片1挂在推动卡5上，从而防止动簧片与静簧片之间误接通，提高安全继电器的安全性能。
本实施例中，外壳6的中间，在沿着推动卡的移动方向，设有向下的凸筋61。在底座4的中间，沿着推动卡的移动方向，设有凹槽41。当外壳6与底座4相固定时，外壳的凸筋61配合在底座的凹槽41中。在推动卡5上设有让凸筋61通过的通孔53。
本实施例中，外壳的凸筋61和底座的凹槽41分别是设成对应配合的多段。
本实施例中，在底座4的中间，沿着推动卡的移动方向，设有第一挡墙42。多个触点组分别对称设在第一挡墙42的两边，凹槽41设在第一挡墙42的顶部。第一挡墙42的每边分布有三个触点组。
本实施例中，在底座4中，在对应于第一挡墙的同一边的两个相邻触点组之间的位置处，还设有第二挡墙43，以防止触点间飞溅物相互干扰。即，在第一挡墙的两边分别设有二个第二挡墙43，用来将每边的三个触点组隔开。
本实施例中，底座4中，在对应于同触点组的动簧片与静簧片之间的位置处，还设有第三挡墙44。即，在第一挡墙的两边分别设有三个第三挡墙43，用来将每边的三个触点组中的动静簧隔开。
本实施例中，底座4中，设有用来安装磁路部分2的底座腔45。在底座腔45中，沿着水平方向设有用来将磁路部分2推入底座腔的轨道槽46。本公开另一方面提供一种用于安全继电器的动簧片及其安全继电器，采用了在动簧片的簧片本体的头部11还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端15的另一面弯折成大致90度方向延伸的第一延伸部16以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部17，由簧片本体的头部的末端15、第一延伸部16、第二延伸部17围成一个凹口18，使动簧片形成一个倒J型结构，并且在推动卡上设有推动臂51，将推动卡的推动臂51适配在动簧片的凹口18中，该凹口开口朝下配合在推动臂上，使得动簧片挂在推动卡的推动臂上，从而在前后方向实现继电器的强制导向作用；即，推动卡5往前运动时，推动动簧片向前运动，而当推动卡往后运动时，动簧片的折弯部分(即第二延伸部)拉着推动卡的推动臂，跟着推动卡一起向后运动，当动静触点出现粘连时，推动卡无法继续移动，从而保证了触点组之间的相互连锁。
本公开的用于安全继电器的动簧片及其安全继电器，采用了将第一延伸部16的底面与推动卡的推动臂51的顶面相配合，从而可以限制推动卡5沿着与推动卡运动相垂直的方向与继电器的外壳相接触，即，相当于可以对推动卡5上部进行限位，防止推动卡与外壳摩擦， 造成继电器动作异常。
本公开的用于安全继电器的动簧片及其安全继电器，采用了将动簧片1挂在推动卡的推动臂51上，当簧片本体的尾部13(即根部)出现断裂，则动簧片1仍将挂在推动卡的推动臂51中，簧片本体悬空不会向下掉落，因而也不会出现误接通的情况，能够保证安全继电器的安全性。而相关的安全继电器如果簧片根部出现断裂，簧片将有可能出现簧片部分倾斜地掉落到底座中，进而接通动簧引出脚及静簧部分，影响了继电器的安全性。
本公开的用于安全继电器的动簧片及其安全继电器，采用了外壳6的中间，在沿着推动卡的移动方向，设有向下的凸筋61；在底座4的中间，在沿着推动卡的移动方向，设有凹槽41；当外壳6与底座4相固定时，外壳的凸筋61配合在底座的凹槽41中。本公开通过凸筋61与凹槽41的配合，起到三个作用：一是，凸筋61对推动卡5的移动起到了导向限制作用，减少因为推动卡出现偏斜，导致触点的超行程出现变小，影响继电器的寿命；二是，凸筋61与底座配合，加大了左右触点组间(即第一挡墙两边)的爬电距离和空气间隙；三是，凸筋61压在底座4上，起到对外壳6的限位作用，保证外壳表面与推动卡、动簧的距离，保证推动卡与动簧的灵活性。
本公开的用于安全继电器的动簧片及其安全继电器，采用了在底座4中，在对应于第一挡墙的同一边的两个相邻触点组之间的位置处，还设有第二挡墙43，可以防止触点间飞溅物相互干扰，减少触点组间的飞溅物污染，保证触点接触的可靠性。本公开还采用了在底座4中，在对应于同触点组的动簧片与静簧片之间的位置处，还设有第三挡墙44，可以护住静簧及增加触点间绝缘；当触点(常开端)出现粘死时，第三挡墙限位静簧往动簧方向移动，保证常闭端触点间隙足够大，反之，常闭端粘死，可以保证常开端触点间隙；第三挡墙还可以增加触点间的爬电距离，增加触点间绝缘。
本公开的用于安全继电器的动簧片及其安全继电器，采用了在底座腔45中，沿着水平方向设有用来将磁路部分推入底座腔的轨道槽46。底座腔45采用轨道式结构，磁路部分装入时，底座轨道槽对磁路部分2的轭铁21有导向作用，可以防止线圈装入过程与底座碰撞导致漆包线受损。
与相关技术相比较，本公开的有益效果是：
1、本公开由于采用了在动簧片的簧片本体的头部还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端的另一面弯折成大致90度方向延伸的第一延伸部以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部，由簧片本体的头部的末端、第一延伸部、第二延伸部围成一个凹口(相当于使动簧片形成一个倒J型结构)，并且在推动卡上设有推动臂，将推动卡的推动臂适配在动簧片的凹口中(该凹口实际上是开口朝下配合在推动臂上，也可以说是动簧片挂在推动卡的推动臂上)，从而在前后方向实现继电器的强制导向作用；即，推动卡往前运动时，推动动簧片向前运动，而当推动卡往后运动时，动簧片的折弯部分(即第二延伸部)拉着推动卡的推动臂，跟着推动卡一起向后运动，当动静触点出现粘连时，推动卡无法继续移动，从而保证了触点组之间的相互连锁。
2、本公开由于采用了将第一延伸部的底面与推动卡的推动臂的顶面相配合，从而可以限制推动卡沿着与推动卡运动相垂直的方向与继电器的外壳相接触，即，相当于可以对推动卡上部进行限位，防止推动卡与外壳摩擦，造成继电器动作异常。
3、本公开由于采用了将动簧片挂在推动卡的推动臂上，当簧片本体的尾部(即根部)出现断裂，则动簧片仍将挂在推动卡的推动臂中，簧片本体悬空不会向下掉落，因而也不会出现误接通的情况，能够保证安全继电器的安全性。而相关的安全继电器如果簧片根部出现断裂，簧片将有可能出现簧片部分倾斜地掉落到底座中，进而接通动簧引出脚及静簧部分，影响了继电器的安全性。
4、本公开由于采用了外壳的中间，在沿着推动卡的移动方向，设有向下的凸筋；在底座的中间，在沿着推动卡的移动方向，设有凹槽；当外壳与底座相固定时，外壳的凸筋配合在底座的凹槽中。本公开通过凸筋与凹槽的配合，起到三个作用：一是，凸筋对推动卡的移动起到了导向限制作用，减少因为推动卡出现偏斜，导致触点的超行程出现变小，影响继电器的寿命；二是，凸筋与底座配合，加大了左右触点组间(即第一挡墙两边)的爬电距离和空气间隙；三是，凸筋压在底座上，起到对外壳的限位作用，保证外壳表面与推动卡、动簧的距离，保证推动卡与动簧的灵活性。
5、本公开由于采用了在底座中，在对应于第一挡墙的同一边的两个相邻触点组之间的位置处，还设有第二挡墙，可以防止触点间飞溅物相互干扰，减少触点组间的飞溅物污染，保证触点接触的可靠性。
6、本公开由于采用了在底座中，在对应于同触点组的动簧片与静簧片之间的位置处，还设有第三挡墙，可以护住静簧及增加触点间绝缘；当触点(常开端)出现粘死时，第三挡墙限位静簧往动簧方向移动，保证常闭端触点间隙足够大，反之，常闭端粘死，可以保证常开端触点间隙；第三挡墙还可以增加触点间的爬电距离，增加触点间绝缘。
7、本公开由于采用了在底座腔中，沿着水平方向设有用来将磁路部分推入底座腔的轨道槽。底座腔采用轨道式结构，磁路部分装入时，底座轨道槽对磁路部分的轭铁有导向作用，可以防止线圈装入过程与底座碰撞导致漆包线受损。
以下结合附图及实施例对本公开作在一实施例中详细说明；但本公开的一种设置为安全继电器的动簧片及其安全继电器不局限于实施例。
上述只是本公开的示例性实施例，并非对本公开作任何形式上的限制。任何熟悉本领域的技术人员，在不脱离本公开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公开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，凡是未脱离本公开技术方案的内容，依据本公开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，均应落在本公开技术方案保护的范围内。

Claims (14)

  1. 一种用于安全继电器的动簧片，包括直片形形状的簧片本体；簧片本体的头部的一面固接动触点，簧片本体的尾部设有用来与动簧引出片相固定的连接部；其中：簧片本体的头部还设有向外延伸的延伸部，该延伸部包括沿着簧片本体的头部的末端的另一面弯折成大致90度方向延伸的第一延伸部以及由第一延伸部的末端再朝着簧片本体的尾部方向弯折成大致90度方向延伸的第二延伸部。
  2. 根据权利要求1所述的用于安全继电器的动簧片，其中：所述延伸部的宽度尺寸与簧片本体的头部的宽度尺寸相同；所述簧片本体的头部的宽度尺寸大于簧片本体的中部、簧片本体的尾部的宽度尺寸。
  3. 一种安全继电器，包括磁路部分、动簧部分、静簧部分、推动卡和底座；所述动簧部分、静簧部分、推动卡和磁路部分分别安装在底座上，并使动静触点处于相配合的位置，推动卡连接在磁路部分与动簧部分之间，且动簧部分、静簧部分具有多个触点组；其中：所述动簧部分包括如权利要求1或2所述的动簧片和动簧引出脚，所述簧片本体的尾部与动簧引出脚相固定，动簧引出脚插装在底座上；所述推动卡设有推动臂，推动卡的推动臂适配在由所述簧片本体的头部的末端、所述第一延伸部、所述第二延伸部所围成的凹口中；当推动卡的推动臂的一侧面推向所述簧片本体的头部的末端时，所述动簧片朝着静触点方向移动，当推动卡的推动臂的另一侧面推向所述第二延伸部时，所述动簧片朝着背离静触点方向移动，当动静触点出现粘连时，推动卡无法继续移动，从而保证了触点组之间的相互连锁。
  4. 根据权利要求3所述的安全继电器，其中：所述推动卡的推动臂间隙配合在所述簧片本体的头部的末端与所述第二延伸部之间。
  5. 根据权利要求3所述的安全继电器，其中：所述推动卡的推动臂的一侧面和/或推动卡的推动臂的另一侧面为中部向外凸出的弧形面。
  6. 根据权利要求3所述的安全继电器，其中：所述第一延伸部的底面与推动卡的推动臂的顶面相配合，以限制推动卡沿着与推动卡运动相垂直的方向与继电器的外壳相接触，该外壳固定在底座上，以将磁路部分、动簧部分和静簧部分的触点部分、推动卡容纳在内。
  7. 根据权利要求3所述的安全继电器，其中：所述推动卡设有用来配合动簧片插入的插槽，所述推动臂设在插槽中。
  8. 根据权利要求3所述的安全继电器，其中：所述动簧片的凹口向下卡在所述推动卡的推动臂上，当簧片本体的尾部出现断裂时，动簧片挂在推动卡上，从而防止动簧片与静簧片之间误接通，提高安全继电器的安全性能。
  9. 根据权利要求6所述的安全继电器，其中：所述外壳的中间，在沿着推动卡的移动方向，设有向下的凸筋；所述底座的中间，在沿着推动卡的移动方向，设有凹槽；当外壳与底座相固定时，外壳的凸筋配合在底座的凹槽中。
  10. 根据权利要求9所述的安全继电器，其中：所述外壳的凸筋和底座的凹槽分别是设成对应配合的多段。
  11. 根据权利要求9所述的安全继电器，其中：所述底座的中间，在沿着推动卡的移动方向，设有第一挡墙；所述多个触点组分别对称设在第一挡墙的两边，所述凹槽设在第一挡墙的顶部。
  12. 根据权利要求3所述的安全继电器，其中：所述底座中，在对应于第一挡墙的同一边的两个相邻触点组之间的位置处，还设有第二挡墙，以防止触点间飞溅物相互干扰。
  13. 根据权利要求3所述的安全继电器，其中：所述底座中，在对应于同触点组的动簧片与静簧片之间的位置处，还设有第三挡墙。
  14. 根据权利要求3所述的安全继电器，其中：所述底座中，设有用来安装磁路部分的底座腔；在底座腔中，沿着水平方向设有用来将所述磁路部分推入底座腔的轨道槽。
PCT/CN2018/086657 2018-03-13 2018-05-14 一种用于安全继电器的动簧片及其安全继电器 WO2019174119A1 (zh)

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