WO2022121924A1 - 支持直插接线的弹簧回拉式接线端子 - Google Patents

支持直插接线的弹簧回拉式接线端子 Download PDF

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Publication number
WO2022121924A1
WO2022121924A1 PCT/CN2021/136324 CN2021136324W WO2022121924A1 WO 2022121924 A1 WO2022121924 A1 WO 2022121924A1 CN 2021136324 W CN2021136324 W CN 2021136324W WO 2022121924 A1 WO2022121924 A1 WO 2022121924A1
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WO
WIPO (PCT)
Prior art keywords
sliding block
spring clip
cage
housing
clamping
Prior art date
Application number
PCT/CN2021/136324
Other languages
English (en)
French (fr)
Inventor
张淼
Original Assignee
菲尼克斯亚太电气（南京）有限公司
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Filing date
Publication date
Application filed by 菲尼克斯亚太电气（南京）有限公司 filed Critical 菲尼克斯亚太电气（南京）有限公司
Priority to DE112021006364.2T priority Critical patent/DE112021006364T5/de
Publication of WO2022121924A1 publication Critical patent/WO2022121924A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4835—Mechanically bistable arrangements, e.g. locked by the housing when the spring is biased
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4811—Spring details
    • H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool

Definitions

  • This patent application relates to a wiring terminal, in particular to a spring-pulled wiring terminal with a novel structure that supports the operation of in-line wiring, which belongs to the technical field of electrical connection.
  • a terminal is a common electrical connection device, which can be used to form an electrical connection between two electrical devices (eg, a control device and an action device, a signal output device and a signal input device), or for signal relay, etc.
  • the connection terminals in the prior art can be classified into in-line type, spring-pull type, screw-fastened type, etc. according to the method of clamping the wire.
  • An in-line terminal used in the prior art includes a terminal housing, a wire clamping spring structure installed in the terminal housing, and a holding mechanism installed in the terminal housing.
  • the end of the pivotable clamping arm of the wire clamping spring structure is in contact with the holding mechanism, and the end of the clamping arm is limited by the interference of the locking portion of the holding mechanism, so the clamping arm is locked state.
  • the wire pushes the holding mechanism to mechanically deform the holding structure, and the locking portion of the holding mechanism no longer prevents the movement of the end of the clamping arm of the wire clamping spring structure, so the clamping arm can be under its own elastic restoring force. Under the action of pivoting, it contacts with the inserted wire and exerts clamping force on it to realize wiring.
  • the purpose of this patent application is to provide a spring-pull type terminal that supports plug-in wiring.
  • a wiring terminal comprises: a housing, which defines an inner space of the terminal, and defines a wiring channel and an operation channel that communicate with the inner space; a cage-type spring clip located in the housing , the cage spring clip includes a support arm and a clamping arm, the clamping arm is provided with a clamping opening, and the end of the supporting arm passes through the clamping opening; a sliding block and a compression spring located in the housing , the sliding block can be positioned in the reset position by the drive of the compression spring, when the sliding block is in the reset position, a part of the sliding block can enter the jaw of the clamping arm, thereby The cage spring clip is in a locked state that is blocked by the sliding block and cannot be pulled back. When the sliding block is pushed away from the reset position, the sliding block exits the jaw of the clamping arm, Thus, the locked state of the cage spring clip is released.
  • the sliding block can be pushed by the wire inserted into the wiring channel and entering the clamping opening to leave the reset position, thereby releasing the locking state of the cage spring clip, thereby enabling the The cage spring clip enters a wire clamping state, wherein in the wire clamping state, the cage spring clip clamps the wire in the clamping opening with an elastic return force.
  • the sliding block includes a vertical baffle, and when the sliding block is in the reset position, a part of the vertical baffle of the sliding block can enter the clamping opening of the clamping arm , so that the cage spring clip is in a locked state that cannot be pulled back.
  • the sliding block further includes a horizontal baffle, the horizontal baffle extends from one side of the vertical baffle, and when the wire enters the wiring channel and enters the clamping arm When the jaws are closed, the wire contacts and pushes the transverse baffle down.
  • the sliding block further includes a pair of side baffles located on both sides of the vertical baffle, and the lateral width of the vertical baffle is less than or equal to the width of the clamping opening of the clamping arm.
  • width, the lateral width of the vertical baffles plus the thickness of the pair of side baffles is greater than the width of the jaws of the clamping arms so that the vertical baffles are limited by the side baffles to be able to enter the Degree of grip.
  • the wiring terminal optionally, it further includes a current bar for installing and positioning in the housing, the support arm of the cage spring clip abuts on the current bar, and the clip of the cage spring clip abuts on the current bar.
  • the mouth sleeve is arranged on the current bar.
  • the current bar includes a lateral guide portion and a vertical guide portion, the support arm of the cage spring clip abuts on the vertical guide portion, and the cage spring clip The clip is sleeved on the vertical flow guide.
  • connection terminal optionally, a shoulder is provided at the end of the vertical guide portion of the current bar to form a shape fit with the width of the jaw of the cage-type spring clip.
  • a pair of guide wings is provided on the vertical guide portion of the current bar, and the pair of guide wings forms a shape fit with a pair of guide posts on the sliding block, thereby limiting the The active stroke of the slider.
  • the terminal optionally, it further includes a guide structure provided on the housing or on the current bar in the housing, the guide structure and the sliding block form a shape fit, so as to limit the Describe the movable stroke of the slider.
  • the cage spring clip is installed on the spring clip positioning portion of the housing, and the auxiliary spring clip is installed between the spring clip positioning portion and the cage spring clip. to enhance the pullback force of the cage spring clip.
  • an operating tool entering the inside of the housing through the operating channel can push the cage spring clip to elastically deform, thereby releasing the locked state or the wire clamping state.
  • the spring-pull type terminal has the advantages of smaller shape and better anti-vibration performance than other types of terminals.
  • the present patent application extends the convenience of the straight plug-in wiring to the spring-pulled terminal, so that this type of terminal is further characterized by convenient operation, so that it can be applied in a wider field.
  • FIG. 1 is an exploded view of a terminal according to an embodiment of the present patent application.
  • connection terminal 2A is a cross-sectional view of a connection terminal in an unconnected state according to an embodiment of the present application.
  • connection terminal 2B is a cross-sectional view of the connection terminal according to the embodiment of the present application in a connection state
  • 3A-3B are views from different perspectives of a current bar and a slider in a connection terminal according to an embodiment of the present application in a combined state.
  • 3C-3D are different perspective views of a current bar and a slider in a terminal according to an embodiment of the present application in an exploded state.
  • FIG. 1 is an exploded view of a terminal 100 according to an embodiment of the present application.
  • FIG. 2A is a cross-sectional view of the connection terminal 100 in an unconnected state according to an embodiment of the present application.
  • FIG. 2B is a cross-sectional view of the connection terminal 100 according to an embodiment of the present application in a connection state.
  • a terminal 100 includes a housing 110 , a cage spring clip 120 , a current bar 130 , a sliding block 140 , a compression spring 150 and an auxiliary spring clip 160 .
  • Housing 110 includes wiring channel 115 and operating channel 116 .
  • the end of the wire 170 shown in FIG. 1 is stripped of the insulating layer to expose the conductive wire end 171 .
  • the wire 170 can enter the interior of the housing 110 through the wiring channel 115, so that the conductive wire end 171 is clamped by the cage-type spring clip 120 to realize wiring.
  • the cage-type spring clip 120 may be made of sheet metal, which includes a support arm 121 and a clamp arm 122, and the support arm 121 and the clamp arm 122 are connected by a U-shaped transition section.
  • the clamping arm 122 is provided with a clamping opening 125 .
  • the jaw 125 is in the form of an opening in the clamping arm that is wide enough for the end portion of the support arm 121 to be inserted (the end of the support arm 121 may have a width change to form a shoulder structure that restricts the support arm 121 from entering the clamp the degree of mouth 125).
  • the cage clip 120 may be mounted on the spring clip positioning portion 112 within the housing 110 as shown in FIG. 2A so as to be generally positioned.
  • the support arms 121 of the cage clips 120 may rest against any suitable structure, for example, against the current bars 130 as shown in FIG. 1 .
  • the cage-type spring clip 120 in the installed state is equivalent to a closed loop composed of elastic pieces, and the mechanical elasticity of the closed loop itself enables it to generate an elastic restoring force that expands the closed loop.
  • this elastic restoring force causes the clamping arm 122 to move, and this movement of the clamping arm 122 is referred to herein as "pulling back".
  • This elastic restoring force-based pullback enables the clamping arm 122 to apply a clamping force to the structure within the jaw 125 .
  • an auxiliary spring clip 160 is installed between the spring clip positioning portion 112 and the cage spring clip 120 to further enhance the elastic return force of the cage spring clip 120 .
  • cage spring clip 120 Although the specific structure of the cage spring clip 120 is given in the embodiments of the present application, it should be understood that there are various specific construction modes of the cage spring clip in the art. For example, either the cage spring clip described in patent document DE10304493A1, or the PHOENIX The cage-type spring clips used in various types of terminals of the brand's ST series can be applied to the embodiments of the present application.
  • connection terminal of the embodiment of the present application adopts a cage-type spring clip as the connection means, and in this sense, the terminal can be called a spring-pull type connection terminal.
  • the present application further realizes a plug-in wire on the basis of the structure of the spring-pulled terminal, and this plug-in wire will be further described with reference to FIGS. 3A-3D .
  • 3A-3B are views from different viewing angles of the current bar 130 and the slider 140 in the connection terminal according to an embodiment of the present application in a combined state.
  • 3C-3D are different perspective views of a current bar and a slider in a terminal according to an embodiment of the present application in an exploded state.
  • the terminal 100 is provided with a sliding block 140 and a compression spring 150 for pushing the sliding block 140 .
  • the movable stroke of the sliding block 140 can be limited by arranging an appropriate guiding structure in the housing and making the sliding block 140 form a form fit with the guiding structure.
  • the sliding block 140 can move to the upper end of its movable stroke, and this position can be referred to as the reset position of the sliding block 140 .
  • the reset position of the sliding block 140 As shown in FIG. 2A , when the sliding block 140 is in the reset position, a part of the sliding block 140 can enter the jaw 125 of the clamping arm 122 , so that the cage spring clip 120 is blocked by the sliding block 140 and cannot be pulled back "locked state".
  • FIG. 2B when the sliding block is pushed away from the reset position due to the push of the wire 170 , the sliding block 140 withdraws from the jaw 125 of the clamping arm 122 , thereby releasing the locking state of the cage spring clip 120 . At this time, the cage spring clip 120 enters the "clamping state". In the wire-clamping state shown in FIG. 2B , the cage-type spring clip 120 clamps the wire 170 in the clip opening 125 by the elastic return force.
  • an operating tool can enter the interior of the housing 110 through the operating channel 116 and push the cage spring clip 120 to elastically deform, thereby releasing the locked state or the Clamping state. At this time, the sliding block 140 can return to the reset position under the pushing force of the compression spring 150 .
  • the current bars 130 and sliders 140 may have some or all of the constructional features described in Figures 3A-3D.
  • the current bar 130 may include a lateral guide portion 131 and a vertical guide portion 133, and an arc-shaped transition section 132 therebetween.
  • the support arm 121 of the cage spring clip 120 can abut on the vertical guide portion 133 , and the clip opening 125 of the cage spring clip 120 is sleeved on the vertical guide portion 133 .
  • the current bar thus becomes a fulcrum for the elastic restoring force of the cage clip 120 .
  • a shoulder 135 is provided at the end of the vertical guide portion 133 of the current bar 130 to form a form fit with the width of the jaw 125 of the cage clip 120, so that only the end of the vertical guide portion 133 of the current bar 130 is formed. Partially enters the jaw 125 of the cage clip 120 .
  • a pair of guide wings 134 is provided on the vertical guide portion 133 of the current bar 130 , and the guide wings 134 can form a form fit with a pair of guide posts 148 on the sliding block 140 , so that the sliding block 140 activity itinerary.
  • the sliding block 140 may include a vertical baffle 146 and a horizontal baffle 145 .
  • a portion of the upright 146 of the slide block 140 ie, the upper end portion in FIG. 3D
  • the horizontal baffle 145 extends from one side of the vertical baffle 143.
  • a pair of side baffles 143 are located on both sides of the vertical baffle 146 and the horizontal baffle 145 .
  • the lateral width of the vertical baffle 146 itself is smaller than or equal to the width of the jaw 125 of the clamping arm 120
  • the lateral width of the vertical baffle 146 itself plus the thickness of the pair of side baffles 143 is greater than the jaw of the clamping arm 120 125 width. Accordingly, the side baffles 143 define the extent to which the vertical baffles 146 can enter the jaws 125 .
  • sliding block 140 and the guide structure matched therewith on the current bar 130 are described with reference to FIGS. 3A-3D, it should be understood that this is only a specific implementation manner of the invention proposed in the present application.
  • the sliders of other constructions can be adopted, and the guide structure in the housing can also adopt other constructions.
  • slides based on rails or guide grooves may be employed, which may be arranged in channels formed by a plurality of wall structures.

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  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

本申请涉及支持直插接线的弹簧回拉式接线端子，这种接线端子包括：壳体，所述壳体限定端子的内部空间，并且限定和所述内部空间相通的接线通道和操作通道；位于所述壳体内的笼式弹簧夹，所述笼式弹簧夹包括支承臂和夹紧臂，所述夹紧臂上设有夹口，所述支承臂的末端穿过所述夹口；位于所述壳体内的滑动块和压缩弹簧，所述滑动块能够通过所述压缩弹簧的驱动而被定位在复位位置，当所述滑动块位于所述复位位置时，所述滑动块的一部分能够进入所述夹紧臂的夹口，从而使所述笼式弹簧夹处于被所述滑动块阻挡而无法回拉的锁定状态，当所述滑动块被推动离开所述复位位置时，所述滑动块退出所述夹紧臂的夹口，从而解除所述笼式弹簧夹的锁定状态。

Description

支持直插接线的弹簧回拉式接线端子 技术领域
本专利申请涉及一种接线端子，尤其是一种具有新型构造方式的，支持直插接线操作的弹簧回拉接线端子，其属于电连接技术领域。
背景技术
接线端子是常见的电连接设备，它可用于在两种电气设备(例如，控制设备和动作设备，信号输出设备和信号输入设备)之间形成电连接，或用于信号中继等。现有技术中的接线端子，根据夹线方式，可以分为直插式、弹簧回拉式、螺钉紧固式等。
一种现有技术中已经使用的直插式端子，包括端子外壳，装设于端子外壳内的夹线弹簧结构，和装设于端子外壳内的保持机构。在未接入导线时，夹线弹簧结构的可枢转的夹紧臂的末端和保持机构接触，并且,夹紧臂的末端受保持机构的锁止部的干涉限制，因此夹紧臂处于锁定状态。在插入导线后，导线推动保持机构，使保持结构发生机械形变，保持机构的锁止部不再阻止夹线弹簧结构的夹紧臂的末端的运动，因此夹紧臂可以在自身弹性回复力的作用下枢转，和插入的导线接触并对其施加夹紧力，实现接线。
发明内容
本专利申请旨在提供一种支持直插接线的弹簧回拉式接线端子。
根据本专利申请的一种接线端子，包括：壳体，所述壳体限定端子的内部空间，并且限定和所述内部空间相通的接线通道和操作通道；位于所述壳体内的笼式弹簧夹，所述笼式弹簧夹包括支承臂和夹紧臂，所述夹紧臂上设有夹口，所述支承臂的末端穿过所述夹口；位于所述壳体内的滑动块和压缩弹簧，所述滑动块能够通过所述压缩弹簧的驱动而被定位在复位位置，当所述滑动块位于所述复位位置时，所述滑动块的一部分能够进入所述夹紧臂的夹口，从而使所述笼式弹簧夹处于被所述滑动块阻挡而无法回拉的锁定状态，当所述滑动块被推动离开所述复位位置时，所述滑动块退出所述夹紧臂的夹口，从而解除所述笼式弹簧夹的锁定状态。
上述接线端子中，可选地，所述滑动块能够被插入所述接线通道并进入所述夹口的导线推动以离开所述复位位置，从而解除所述笼式弹簧夹的锁定状态，进而使所述笼式弹簧夹进入夹线状态，其中在所述夹线状态中，所述笼式弹簧夹利用弹性回拉力夹紧在所述夹口内的导线。
上述接线端子中，可选地，所述滑动块包括竖挡板，当所述滑动块位于所述复位位置时，所述滑动块的竖挡板的一部分能够进入所述夹紧臂的夹口，从而使所述笼式弹簧夹处于无法回拉的锁定状态。
上述接线端子中，可选地，所述滑动块还包括横挡板，所述横挡板自所述竖挡板的一侧延伸出，当导线进入所述接线通道并进入所述夹紧臂的夹口时，导线接触并向下推动所述横挡板。
上述接线端子中，可选地，所述滑动块还包括位于所述竖挡板两侧的一对侧挡板，所述竖挡板的横向宽度小于或等于所述夹紧臂的夹口的宽度，所述竖挡板的横向宽度加上所述一对侧挡板的厚度大于所述夹紧臂的夹口的宽度，从而由所述侧挡板限定所述竖挡板能够进入所述夹口的程度。
上述接线端子中，可选地，还包括用于安装定位于所述壳体内的电流条，所述笼式弹簧夹的支承臂抵靠在所述电流条上，所述笼式弹簧夹的夹口套设在所述电流条上。
上述接线端子中，可选地，所述电流条包括横向导流部和竖向导流部，所述笼式弹簧夹的支承臂抵靠在所述竖向导流部上，所述笼式弹簧夹的夹口套设在所述竖向导流部上。
上述接线端子中，可选地，所述电流条的所述竖向导流部的末端设有台肩，用于同所述笼式弹簧夹的夹口宽度构成形状配合。
上述接线端子中，可选地，所述电流条的竖向导流部上设有一对导向翼，所述一对导向翼同所述滑动块上的一对导向柱构成形状配合，从而限定所述滑动块的活动行程。
上述接线端子中，可选地，还包括设于所述壳体上，或设于所述壳体内的电流条上的导向结构，所述导向结构和所述滑动块构成形状配合，从而限定所述滑动块的活动行程。
上述接线端子中，可选地，所述笼式弹簧夹被安装于所述壳体的弹簧夹定位部上，且辅助弹力夹被安装在所述弹簧夹定位部和所述笼式弹簧夹之间以增强所述笼式弹簧夹的回拉力。
上述接线端子中，可选地，通过所述操作通道进入所述壳体内部的操作工具能够推动所述笼式弹簧夹发生弹性形变，从而解除所述锁定状态或所述夹线状态。
本专利申请的有益效果：在很多场合下，认为弹簧回拉式接线端子相比其他种类端子具有外形更小，抗振性能更佳的优势。本专利申请通过将直插接线的便利性拓展到弹簧回拉式接线端子上，使该型端子进一步具有操作便利的特点，因而能够应用的领域更广。
附图说明
图1为根据本专利申请的实施例的接线端子的分解图。
图2A为根据本申请的实施例的接线端子在未接线状态下的剖视图。
图2B为根据本申请的实施例的接线端子在接线状态下的剖视图
图3A－3B为根据本申请的实施例的接线端子中的电流条和滑动块在组合状态下的不同视角视图。
图3C－3D为根据本申请的实施例的接线端子中的电流条和滑动块在分解状态下的不同视角视图。
部分附图标记：
100接线端子；110壳体；112弹簧夹定位部；115接线通道；116操作通道；120笼式弹簧夹；121支承臂；122夹紧壁；125夹口；130电流条；131横向导流部；132弧形过渡段；133竖向导流部；134导向翼；140滑动块；143侧挡板；145横挡板；146竖挡板；148导向柱；压缩弹簧150；辅助弹力夹160；170导线；171导电线端
具体实施方式
在以下的描述中，参考各实施例对本申请进行描述。然而，本领域的技术人员将认识到可在没有一个或多个特定细节的情况下或者与其它替换和/或附加方法、材料或组件一起实施各实施例。在其它情形中，未示出或未详细描述公知的结构、材料或操作以免使本申请的各实施例的诸方面晦涩。类似地，为了解释的目的，阐述了特定数量、材料和配置，以便提供对本申请的实施例的全面理解。然而，本申请可在没有特定细节的情况下实施。此外，应理解附图中示出的各实施例是说明性表示且不一定按比例绘制。
下面结合附图对本申请作进一步的说明。
图1为根据本申请的实施例的接线端子100的分解图。图2A为根据本申请的实施例的接线端子100在未接线状态下的剖视图。图2B为根据本申请的实施例的接线端子100在接线状态下的剖视图。
结合图1、图2A和图2B，根据本申请的实施例的接线端子100包括壳体110、笼式弹簧夹120、电流条130、滑动块140、压缩弹簧150和辅助弹力夹160。壳体110包括接线通道115和操作通道116。图1所示的导线170的末端被剥除绝缘层，露出导电线端171。导线170可以通过接线通道115进入壳体110内部，从而使导电线端171被笼式弹簧夹120夹紧，实现接线。
具体而言，笼式弹簧夹120可由金属片材制成，其包括支承臂121和夹紧臂122，支承臂121和夹紧臂122通过U形的过渡段连接。在夹紧臂122上设有夹口125。夹口125的形式为夹紧臂上的一个开口，此开口的宽度可供支承臂121的末端部分插入(支承臂121的末端可具有宽度变化以构成台肩结构，从而限制支承臂121进入夹口125的程度)。
笼式弹簧夹120可如图2A所示地安装在壳体110内的弹簧夹定位部112上，从而大致被定位。笼式弹簧夹120的支承臂121可以抵靠在任何恰当的结构上，例如，如图1所示，抵靠在电流条130上。安装状态下的笼式弹簧夹120相当于一个由弹片构成的闭环，该闭环自身的机械弹性使其产生使闭环扩大的弹性回复力。当笼式弹簧夹120的支承臂121被定位时，这种弹性回复力使夹紧臂122产生运动，本申请将夹紧臂122的这种运动称为“回拉”。这种基于弹性回复力的回拉使夹紧臂122可以对处于夹口125内的结构施加夹紧力。
在实施例中，可选地，辅助弹力夹160被安装在弹簧夹定位部112和笼式弹簧夹120之间，以进一步增强笼式弹簧夹120的弹性回拉力。
尽管本申请的实施例给出了笼式弹簧夹120的具体结构，但应理解，本领域存在笼式弹簧夹的多种具体构造方式。例如，无论是在专利文献DE10304493A1中描述的笼式弹簧夹，还是PHOENIX
Figure PCTCN2021136324-appb-000001
品牌的ST系列各型端子中采用的笼式弹簧夹，均可应用到本申请的实施方案中。
本申请的实施例的接线端子采用了笼式弹簧夹作为接线手段，在这种意义上，该端子可被称为弹簧回拉式接线端子。本申请进一步在弹簧回拉式接线端子的构造基础上实现了直插接线，这种直插接线将结合图3A－3D来进一步描述。
图3A－3B为根据本申请的实施例的接线端子中的电流条130和滑动块140在组合状态下的不同视角视图。图3C－3D为根据本申请的实施例的接线 端子中的电流条和滑动块在分解状态下的不同视角视图。结合图1、图2A－2B，和图3A－3D，接线端子100内设有滑动块140，以及用于推动滑动块140的压缩弹簧150。通过在壳体内设置适当的导向结构，并使滑动块140同导向结构构成形状配合，可以限定滑动块140的活动行程。在压缩弹簧150的驱动下，滑动块140可以运动到其活动行程的上端，该位置可称为滑动块140的复位位置。如图2A所示，当滑动块140处于复位位置时，滑动块140的一部分能够进入夹紧臂122的夹口125，从而使所述笼式弹簧夹120处于被滑动块140阻挡而无法回拉的“锁定状态”。如图2B所示，当滑动块由于导线170的推动而被推离复位位置时，滑动块140退出所述夹紧臂122的夹口125，从而解除所述笼式弹簧夹120的锁定状态。此时，笼式弹簧夹120进入了“夹线状态”。在图2B所示夹线状态中，笼式弹簧夹120利用弹性回拉力夹紧在所述夹口125内的导线170。
尽管未示出，但应当理解的是，操作工具可通过所述操作通道116进入所述壳体110内部，并推动所述笼式弹簧夹120发生弹性形变，从而解除所述锁定状态或所述夹线状态。此时，滑动块140可在压缩弹簧150的推力作用下回到复位位置。
进一步的实施例中，电流条130和滑动块140可具有图3A－3D所述的构造特征中的一部分或全部。
电流条130可包括横向导流部131和竖向导流部133，以及二者之间的弧形过渡段132。笼式弹簧夹120的支承臂121可抵靠在竖向导流部133上，并且笼式弹簧夹120的夹口125套设在竖向导流部133上。电流条由此成为笼式弹簧夹120的弹性回复力的一个作用支点。在电流条130的竖向导流部133的末端设有台肩135，用于同笼式弹簧夹120的夹口125的宽度构成形状配合，从而使电流条130的竖向导流部133的仅末端部分进入笼式弹簧夹120的夹口125。进一步的实施中，在电流条130的竖向导流部133上设有一对导向翼134，所述导向翼134可以同滑动块140上的一对导向柱148构成形状配合，从而所述滑动块140的活动行程。
滑动块140可包括竖挡板146、横挡板145。当滑动块140位于复位位置时，滑动块140的竖挡板146的一部分(即，图3D中的上端部分)能够进入夹紧臂122的夹口125，从而使笼式弹簧夹120处于无法回拉的锁定状态。横挡板145自竖挡板143的一侧延伸出，当导线170进入接线通道115并进入夹紧臂122的夹口125时，导线170接触并向下推动所述横挡板145，横挡板145进而克服压缩弹簧150的弹力向下运动。
进一步如图3D所示，一对侧挡板143位于竖挡板146和横挡板145两侧。竖挡板146自身的横向宽度小于或等于夹紧臂120的夹口125的宽度，竖挡板146自身横向宽度加上所述一对侧挡板143的厚度则大于夹紧臂120的夹口的125宽度。因此，侧挡板143限定了竖挡板146能够进入所述夹口125的程度。
尽管结合附图3A－3D描述了滑动块140的具体构造，以及电流条130上的与之配合的导向结构，但应理解，这仅是本申请提出的发明创造的一种具体实现方式。可以采取其他构造方式的滑动件，壳体内的导向结构也可以采取其他构造方式。例如，可以采取基于导轨或导槽的滑动件，可以将滑动件设置在由多个壁结构形成的通道中。
上文已对基本概念做了描述，显然，对于本领域技术人员来说，上述披露仅仅作为示例，而并不构成对本申请的限定。虽然此处并没有明确说明，本领域技术人员可能会对本申请进行各种修改、改进和修正。该类修改、改进和修正在本申请中被建议，所以该类修改、改进、修正仍属于本申请实施例的精神和范围。

Claims (12)

  1. 一种接线端子，包括：
    壳体，所述壳体限定端子的内部空间，并且限定和所述内部空间相通的接线通道和操作通道；
    位于所述壳体内的笼式弹簧夹，所述笼式弹簧夹包括支承臂和夹紧臂，所述夹紧臂上设有夹口，所述支承臂的末端穿过所述夹口；
    位于所述壳体内的滑动块和压缩弹簧，所述滑动块能够通过所述压缩弹簧的驱动而被定位在复位位置，
    当所述滑动块位于所述复位位置时，所述滑动块的一部分能够进入所述夹紧臂的夹口，从而使所述笼式弹簧夹处于被所述滑动块阻挡而无法回拉的锁定状态，
    当所述滑动块被推动离开所述复位位置时，所述滑动块退出所述夹紧臂的夹口，从而解除所述笼式弹簧夹的锁定状态。
  2. 如权利要求1所述的接线端子，其特征在于，所述滑动块能够被插入所述接线通道并进入所述夹口的导线推动以离开所述复位位置，从而解除所述笼式弹簧夹的锁定状态，进而使所述笼式弹簧夹进入夹线状态，其中在所述夹线状态中，所述笼式弹簧夹利用弹性回拉力夹紧在所述夹口内的导线。
  3. 如权利要求1或2所述的接线端子，其特征在于，所述滑动块包括竖挡板，当所述滑动块位于所述复位位置时，所述滑动块的竖挡板的一部分能够进入所述夹紧臂的夹口，从而使所述笼式弹簧夹处于无法回拉的锁定状态。
  4. 如权利要求3所述的接线端子，其特征在于，所述滑动块还包括横挡板，所述横挡板自所述竖挡板的一侧延伸出，当导线进入所述接线通道并进入所述夹紧臂的夹口时，导线接触并向下推动所述横挡板。
  5. 如权利要求3所述的接线端子，其特征在于，所述滑动块还包括位于所述竖挡板两侧的一对侧挡板，所述竖挡板的横向宽度小于或等于所述夹紧臂的夹口的宽度，所述竖挡板的横向宽度加上所述一对侧挡板的厚度大于所述夹紧臂的夹口的宽度，从而由所述侧挡板限定所述竖挡板能够进入所述夹口的程度。
  6. 如权利要求1或2所述的接线端子，其特征在于，还包括用于安装定位于所述壳体内的电流条，所述笼式弹簧夹的支承臂抵靠在所述电流条上，所述笼式弹簧夹的夹口套设在所述电流条上。
  7. 如权利要求6所述的接线端子，其特征在于，所述电流条包括横向导流部和竖向导流部，所述笼式弹簧夹的支承臂抵靠在所述竖向导流部上，所述笼式弹簧夹的夹口套设在所述竖向导流部上。
  8. 如权利要求7所述的接线端子，其特征在于，所述电流条的所述竖向导流部的末端设有台肩，用于同所述笼式弹簧夹的夹口宽度构成形状配合。
  9. 如权利要求7所述的接线端子，其特征在于，所述电流条的竖向导流部上设有一对导向翼，所述一对导向翼同所述滑动块上的一对导向柱构成形状配合，从而限定所述滑动块的活动行程。
  10. 如权利要求1所述的接线端子，其特征在于，还包括设于所述壳体上，或设于所述壳体内的电流条上的导向结构，所述导向结构和所述滑动块构成形状配合，从而限定所述滑动块的活动行程。
  11. 如权利要求1或2所述的接线端子，其特征在于，所述笼式弹簧夹被安装于所述壳体的弹簧夹定位部上，且辅助弹力夹被安装在所述弹簧夹定位部和所述笼式弹簧夹之间以增强所述笼式弹簧夹的回拉力。
  12. 如权利要求2所述的接线端子，其特征在于，通过所述操作通道进入所述壳体内部的操作工具能够推动所述笼式弹簧夹发生弹性形变，从而解除所述锁定状态或所述夹线状态。
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