WO2017186060A1 - 用于抽出式断路器的电连接装置以及抽出式断路器 - Google Patents

用于抽出式断路器的电连接装置以及抽出式断路器 Download PDF

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Publication number
WO2017186060A1
WO2017186060A1 PCT/CN2017/081443 CN2017081443W WO2017186060A1 WO 2017186060 A1 WO2017186060 A1 WO 2017186060A1 CN 2017081443 W CN2017081443 W CN 2017081443W WO 2017186060 A1 WO2017186060 A1 WO 2017186060A1
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WO
WIPO (PCT)
Prior art keywords
connection device
electrical connection
circuit breaker
terminal
conductive sheet
Prior art date
Application number
PCT/CN2017/081443
Other languages
English (en)
French (fr)
Inventor
南寅
刘磊
张强
单保卫
Original Assignee
首瑞（天津）电气设备有限公司
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 首瑞（天津）电气设备有限公司 filed Critical 首瑞（天津）电气设备有限公司
Priority to MX2018012429A priority Critical patent/MX2018012429A/es
Publication of WO2017186060A1 publication Critical patent/WO2017186060A1/zh
Priority to ZA2018/06352A priority patent/ZA201806352B/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/173—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type

Definitions

  • the present invention relates to the field of low-voltage electrical appliances, and in particular to an electrical connection device for a draw-out type circuit breaker and a draw-out type circuit breaker.
  • the universal circuit breaker is a commonly used circuit breaker in low-voltage power distribution equipment and is a kind of protection electrical appliance.
  • the circuit breaker can realize quick replacement due to circuit breaker failure, circuit breaker capacity increase and derating, and the convenience of circuit breaker replacement.
  • the circuit breaker includes an incoming terminal and an outgoing terminal, and the drawer device also includes a corresponding incoming terminal and an outgoing terminal.
  • the circuit breaker is to be pushed or pulled out in the drawer device, and the purpose is to make the circuit breaker inlet and outlet terminals and the drawer type
  • the inlet and outlet terminals of the device are joined or separated to provide electrical connection and electrical isolation.
  • the electrical connection between the drawer unit and the corresponding terminal on the circuit breaker is achieved by an electrical connection assembly with a collet at both ends.
  • the electrical connection assembly typically includes two fingers separated by a spacer and an elastic return means for pressing the two fingers against the spacer.
  • the ends facing each other on the two fingers together constitute a first chuck that clamps the terminal of the circuit breaker, and on the other side of the gasket, the ends of the two fingers that face each other together constitute a clamp
  • the second collet of the drawer terminal, the open movement of the first collet forms a closing movement of the other collet by leverage.
  • the two fingers separated by the spacer respectively comprise a plurality of stacked units It means that the unit fingers are attached to each other.
  • the unit finger has no freedom, it cannot be self-corrected according to the position of the breaker terminal and the drawer terminal. This also causes defects such as a small contact area between the circuit breaker terminal and the drawer terminal and the chuck, resulting in low current carrying capacity of the electrical connection assembly.
  • the present invention provides an electrical connection device for a drawout type circuit breaker. Another object of the present invention is to provide a drawout type circuit breaker.
  • An electrical connection device for a drawout circuit breaker comprising: at least one conductive sheet group, the conductive sheet group comprising two rotatably supported conductive sheets, at least one of a first end portion and a second end portion of the two conductive sheets Forming a collet for clamping the connected terminals, the clamping faces of the collet being delimited by sides at which the ends are opposite each other, and at least one end being movable in a direction to loosen/clamp the connected terminals; a clamping member capable of fixing the conductive sheet set and providing a clamping force to the connected terminal of the insertion chuck, wherein the conductive sheet has a flexible conductive portion connected to the at least one end to adjust at least one end to be connected The degree of contact of the terminals.
  • connection terminal when the connection terminal is inserted into the chuck, at least one end portion of the conductive sheet forming the chuck passes through the connection with the flexible conductive portion, so that the end portion can follow the loosening/clamping of the connected terminal
  • the direction is moved, so that the degree of contact between the end portion and the connected terminal can be adjusted, and the defect that the current connection capability of the electrical connecting device is low due to the small contact area between the electrical connecting device and the connected terminal is improved.
  • the electrical connecting device when the first end portion and the second end portion of the conductive sheet respectively form the collet, the contact between the connected terminal and the respective collet does not affect each other and has relative independence. Take Good contact can be achieved between each collet and the corresponding connected terminal, thereby improving the defect that the electrical connection device has low current carrying capacity due to small contact area.
  • At least one end of the two conductive sheets is formed with a support portion facing each other such that the two conductive sheets are rotatably supported on the support portion.
  • the support portion is integrally formed at an end portion of the conductive sheet, and when the connection terminal is inserted into the chuck, the two conductive sheets constituting the conductive sheet group can be rotatably supported by the support portion so that the end portion can be loosened/clamped The direction of the connection terminal moves.
  • the electrical connection device further includes a support disposed between the two conductive sheets, at least one end of the two conductive sheets having an extension extending toward the support, the two conductive sheets extending The part is rotatably supported on the support.
  • the support member includes a receiving portion that is received within the receiving portion.
  • the accommodating portion can provide a supporting force for the conductive piece through the extending portion, so as to prevent the insertion force of the connecting terminal from directly acting on the flexible conductive portion to bend it, thereby reducing the difficulty of plugging the connected terminal.
  • the electrical connection device includes a plurality of conductive sheet groups arranged in a stacked manner, and at least one end portion of the conductive sheet is disposed between adjacent ones of the plurality of conductive sheet groups Reversed motion gap.
  • the motion gap allows the end portion to be twisted to achieve adaptive contact between the chuck and the connected terminal, thereby increasing the chuck Contact area with the terminal to be connected.
  • the motion gap can also act as a heat dissipation gap to reduce temperature rise.
  • the electrical connection device includes a spacing member for defining a minimum distance of the motion gap.
  • the spacing member can ensure a minimum movement gap and a heat dissipation gap between two adjacent conductive sheet groups, and avoid mutual adhesion of two adjacent conductive sheet groups.
  • the clamping member includes: a spring that abuts against at least one end of the conductive sheet to provide a clamping force to the connected terminal of the insertion chuck; and a fixing member that fixes the spring and holds the spring The clamping force on the connected terminals.
  • the electrical connection device further includes a limiting portion for preventing the lateral connection of the connected terminal along the collet.
  • the conductive sheet is any one of the following structures: at least one The end portion is connected with the flexible conductive portion; at least one end portion and the flexible conductive portion are of a unitary structure.
  • the flexible conductive portion is any one of a soft connecting wire, a soft braided wire, and a foil.
  • the present invention also provides a draw-out type circuit breaker, comprising a circuit breaker drawer, a fixed terminal is mounted on the circuit breaker drawer; a circuit breaker body having an insertion terminal mounted on the circuit breaker body; and the electrical connection device according to any one of the above Wherein the fixed terminal and the insertion terminal are connected by an electrical connection device to achieve current transfer.
  • FIG. 1 is a schematic view showing an embodiment of a conductive sheet according to the present invention.
  • Fig. 2 is a schematic view showing an electrical connecting device according to a first embodiment of the present invention.
  • Fig. 3 is a schematic view showing an electrical connecting device in accordance with a second embodiment of the present invention.
  • FIG. 4A is an exploded perspective view showing an electrical connecting device in accordance with a third embodiment of the present invention.
  • Fig. 4B is a schematic view showing an electrical connecting device in accordance with a third embodiment of the present invention.
  • Fig. 5 is a schematic view showing an electrical connecting device in accordance with a fourth embodiment of the present invention.
  • Fig. 6 is a schematic view showing an electrical connecting device according to a fifth embodiment of the present invention.
  • Fig. 7 is a schematic view showing an electrical connecting device in accordance with a sixth embodiment of the present invention.
  • Fig. 8 is a schematic view showing an electrical connecting device according to a seventh embodiment of the present invention.
  • Figure 9 is a schematic view showing an electrical connecting device in accordance with an eighth embodiment of the present invention.
  • Fig. 10 is a view showing the connection of the electrical connecting device of Fig. 3 to the fixed terminal and the insertion terminal.
  • FIG. 1 is a schematic view showing an embodiment of a conductive sheet according to the present invention.
  • the conductive sheet 10 includes a first end portion 11 and a second end portion 12, and a flexible conductive portion 13 that connects the first end portion 11 and the second end portion 12.
  • Flexible guide The electric portion 13 is soft and easily deformable.
  • the flexible conductive portion 13 includes, but is not limited to, a soft connecting wire, a soft braided wire, and a foil.
  • the flexible conductive portion 13 can also be any other flexible structure that can be electrically conductive.
  • the flexibility and deformability of the flexible conductive portion 13 is such that the first end portion 11 and the second end portion 12 have a plurality of degrees of freedom of the movable characteristics.
  • the activity characteristic is that the first end portion 11 and the second end portion 12 have rotational freedom in the lateral direction of the conductive sheet (X direction in FIG. 1) and the longitudinal direction around the conductive sheet (Y direction in FIG. 1) The degree of freedom of rotation, etc.
  • the conductive sheet 10 can be constructed in various ways.
  • the flexible conductive portion 13 can be welded, crimped, riveted, bolted, and interference fit with the first end portion 11 and/or the second end portion 12. Connected together in a way.
  • the conductive sheet 10 is not limited to the above structure.
  • the flexible conductive portion 13 and the first end portion 11 and/or the second end portion 12 may also be a unitary structure.
  • the first end portion 11 and/or the second end portion 12 are made directly on the flexible conductive portion 13.
  • the conductive sheet 10 includes a first end portion 11 and a second end portion 12, and the structure of the above-described conductive sheet 10 is most suitable for the case where the electrical connecting device has two chucks.
  • the conductive sheet 10 is not limited to the above structure.
  • the conductive sheet 10 may also include only the first end portion 11 or only the second end portion 12 to accommodate the case where the electrical connection device has a collet.
  • Fig. 2 is a schematic view showing an electrical connecting device according to a first embodiment of the present invention.
  • the electrical connection device 100 is used to connect the connected terminals in the circuit to achieve current flow between the connected terminals.
  • the electrical connection device 100 includes a plurality of conductive sheet groups, each conductive sheet group including two rotatably supported conductive sheets 10A (variations of the conductive sheets 10), and the first ends of the conductive sheets 10A
  • the first collet 101 is formed, and the second end of the conductive sheet 10A constitutes the second collet 102, and the clamping faces of the two collets are defined by the side faces of the respective ends opposite to each other, the first collet 101 and the second collet
  • the fixing member 30 is fixed by the clamping member 30 and supplies a clamping force to the connected terminals respectively inserted into the two collets.
  • the both end portions have a direction in which the direction of the connected terminal (the X direction in FIG. 1) is loosened/clamped.
  • the activity characteristic which can adjust the contact degree between the chuck and the connected terminal, so that the clamping surface of the chuck and the connected terminal can approach or even reach the optimal value at the time of design, thereby Increase the ability of the electrical connection device to carry current.
  • the contact condition of the connected terminal and the corresponding collet does not affect each other, and the movements of the two end portions forming the collet have relative independence, so that the collet and the corresponding connected terminal are Good contact can be achieved between each time, thereby improving the contact area between the electrical connection device and the connected terminal, and improving the defect that the electrical connection device has low current carrying capacity.
  • the first end portion and the second end portion of the two conductive sheets 10A are respectively formed with support portions 20A.
  • the support portions 20A extend toward the other direction and are in contact with each other, and are inserted into the first chuck when the connected terminals are respectively inserted.
  • the support portion 20A is capable of providing rotational support to the two conductive sheets 10A such that the first end and the second end of the conductive sheet are movable in a direction of loosening/clamping the connected terminal.
  • the support portion 20A can also be used to limit the opening size of the first collet 101 and the second collet 102.
  • the clamping member is used to secure the collet and provide a clamping force to the connected terminal of the insertion collet.
  • the clamping member includes a spring and a fixing member, the spring abutting against at least one end of the conductive sheet to provide a clamping force to the connected terminal inserted into the collet, the fixing member for fixing the spring and maintaining the spring to the connected terminal Clamping force.
  • the clamping member 30 includes a leaf spring 31, a gusset 32, and a locking lever 33.
  • the leaf spring 31 is bonded to both end portions of the conductive sheet 10A from the outer side of the chuck, and the edge 14 of the leaf spring 31 is formed at the first end portion and the second end portion of the conductive sheet 10A, respectively, and the leaf spring 31 is formed. A small displacement can be produced between the two edges 14, but does not affect the function to be achieved by the leaf spring 31.
  • Both ends of the gusset 32 extend out of the leaf spring 31.
  • Locking holes 321 are respectively formed at the ends of the gusset 32 extending from the leaf spring 31, and the locking levers 33 are respectively inserted into the locking holes 321 to press the leaf springs 31.
  • the leaf spring 31 and the first end portion and the second end portion of the conductive sheet 10A are formed with finger structures 311 separated from each other, and the finger structure 311 can increase the degree of freedom of both end portions of the single conductive sheet 10 to enhance its activity. characteristic.
  • the locking hole 321 on the gusset 32 may be provided as an elongated hole, and the extending direction of the elongated hole extends in a direction in which the leaf spring 31 is pressed. When the lock lever 33 is mounted, the elongated hole can facilitate the penetration of the lock lever 33.
  • the locking hole 321 is not limited to the above-described structure, and the locking hole may be, for example, circular, square, or other shape that matches the locking lever 33.
  • the locking rod 33 is further provided with an axial positioning portion 331 to realize the locking rod 33 in the axial direction thereof.
  • the axial positioning portion 331 is a circumferential groove provided on the locking rod 33, and the side wall edge of the groove can be engaged with the edge of the locking hole 321 for positioning.
  • the axial positioning portion 331 is not limited to the above-described structure. According to one embodiment, the axial positioning portion 331 may also be a flange provided on the locking lever 33, and the positioning is achieved by the flange engaging the edge of the locking hole 321.
  • the number of gussets 32 may depend on the number of conductive sheets. When the number of the conductive sheet groups is large, the gusset 32 may be disposed in plural in the stacking direction of the conductive sheet group, so that the pressing force acting on the leaf spring 31 is more uniform. Accordingly, the elastic force applied to the first end portion and the second end portion of the conductive sheet by the leaf spring 31 is more uniform.
  • FIG. 3 is a schematic view showing an electrical connection device according to a second embodiment of the present invention.
  • the electrical connection device 100A includes a support member 20B.
  • the support member 20B may be disposed in a substantially "I" shape.
  • the rotational support of the conductive sheet 10 and the support member 20B is more specifically the upper and lower beams of the conductive sheet 10 and the support member 20B. Rotating support.
  • the conductive sheet 10 extends from the first end portion 11 toward the support member 20B through the first extending portion 111, and the conductive sheet 10 extends from the second end portion 12 toward the support member 20B to extend out the second extending portion 121.
  • An extension portion 111 is rotatably supported by the lower beam of the support member 20B, and the second extension portion 121 is rotatably supported by the upper beam of the support member 20B.
  • the support member 20B is further provided with a receiving portion 21 which is provided at both ends of the cross member of the support member 20B, and the second extending portion 121 is housed in the housing portion 21.
  • the accommodating portion 21 provides a supporting force to the conductive sheet through the second extending portion 121, thereby preventing the insertion force from acting on the flexible conductive portion to be bent, thereby making the insertion difficult.
  • a receiving portion may be provided at both ends of the lower beam of the support member 20B for accommodating the first extending portion 111.
  • the support member 20B is not limited to the above-described structure, and the support member 20B has other arrangements depending on the specific structure of the electrical connection device.
  • the electrical connection device includes a plurality of conductive sheet groups arranged in a stacked manner, and a first end is disposed between two adjacent conductive sheet groups of the plurality of conductive sheet groups The movement gap between the portion and the second end.
  • the motion gap allows the first end portion and the second end portion to be twisted under the insertion force of the connected terminal to achieve adaptive contact between the chuck and the connected terminal.
  • the contact area between the chuck and the connected terminal is increased.
  • the motion gap can also act as a heat dissipation gap to reduce the temperature rise.
  • a spacing member is disposed between the adjacent two conductive sheet groups, and the spacing member is used to define a minimum value of the motion gap.
  • the spacer member may be a protrusion 112 formed at the first end portion and the second end portion, respectively, when the connected terminals are respectively inserted into the two chucks and the first end portion and the second end portion are respectively subjected to Y
  • the protrusion 112 can serve as a support between the adjacent two conductive sheet groups to ensure a minimum movement gap between the adjacent two conductive sheet groups.
  • the projections 112 may be arcuate projections, spherical projections or cylindrical projections or the like.
  • the spacing member is not limited to the structure shown in FIG.
  • the spacer member may also employ a separately disposed rod that is mounted to the first end and/or the second end in a welded, bonded or threaded manner to allow adjacent conductive The minimum movement gap and heat dissipation gap are ensured between the sets of sheets with the length dimension of the rod.
  • the spacing member may also be a plurality of bosses disposed on the support member 20B, and the bosses are dimensioned in the width direction to be equal to the minimum value of the motion gap.
  • the electrical connection device may comprise more or fewer sets of conductive sheets, in the case of a group of conductive sheets. Such a structure can easily realize serialization of the electrical connection device, thereby reducing design and processing costs.
  • the clamp member 30 has the same structure.
  • the clamp member is not limited to the structure shown in FIGS. 2 to 3.
  • the support member 20B and the gusset 32 may be provided in a unitary structure.
  • the spring in the clamping member may be any structure capable of providing a clamping force to the connected terminal by an elastic force, such as a tension spring, a compression spring, a torsion spring, a deformed spring, a solid spring or the like.
  • the structure of the fixing member is also different, and the fixing member can be selected from a shaft pin, a bolt, a rivet or the like.
  • FIGS. 4 to 8 are schematic views showing electrical connection devices according to third, fourth, fifth, sixth, and seventh embodiments of the present invention.
  • the spring adopts the deformed springs 31A and 31B, and the shape of the shaped spring is configured such that the deformed springs 31A and 31B can be the first of the two conductive sheets under the action of the preload
  • the end portion and the second end portion apply clamping forces respectively toward the center of the respective collet, and the fixing members 32A and 32B are used to respectively fix the deformed springs 31A and 31B.
  • the structure of the deformed spring is not limited to FIG. 4A to FIG. 5
  • the shape and structure shown may be a profiled tension spring, a profiled torsion spring or a profiled compression spring depending on the form of the elastic force action.
  • each of the conductive sheet groups is independent of each other, and the number of conductive sheet groups can be flexibly selected according to the application of the circuit breaker.
  • the spring is provided as a compression spring 31C which is pressed against both sides of the chuck, and the elastic restoring force of the compression spring provides a clamping force to the connected terminal of the insertion chuck.
  • the fixing member is a fixing plate 32C that abuts against the compression spring.
  • the fixing plate 32C is provided with a coupling hole 33C through which the fastener locks the fixing plate 32C so that the compression spring maintains the clamping force.
  • the spring is a leaf spring and the fixing member is a frame.
  • the frame 32D of the one-piece structure shown in FIG. 7 or the frame 32E of the split structure shown in FIG. 8 may be employed, and the split frame 32E may be connected and fixed by welding, riveting or the like.
  • FIG. 9 shows a schematic view of the conductive sheet 10B (variation of the conductive sheet 10) in which only the first end constitutes the chuck.
  • One of the connected terminals 200 is inserted into the chuck, and the other connected terminal 300 is soldered to the flexible conductive portion.
  • the connected terminal 300 and the flexible conductive portion are not limited to the welded connection, and may be riveted, crimped, bolted, and connected by an interference fit or the like.
  • the invention also provides a drawout type circuit breaker, comprising a circuit breaker drawer, a circuit breaker body and the above electrical connection device, wherein the circuit breaker drawer is mounted with a fixed terminal, the circuit breaker body is provided with an insertion terminal, a fixed terminal and a insertion terminal Connection is made by the electrical connection to achieve current transfer.
  • Fig. 10 is a schematic view showing the mounting of the electrical connecting device and the fixed terminal and the insertion terminal shown in Fig. 3.
  • the fixed terminal 200 is mounted in the first chuck of the electrical connection device 100A
  • the insertion terminal 300 is mounted in the second chuck of the electrical connection device 100A.
  • the cooperation of the insertion terminal 300 and the second chuck is taken as an example.
  • the inner side of the second chuck is provided with a guide surface 113 for facilitating insertion of the insertion terminal 300 and an arcuate convex surface 114 for making electrical contact with the insertion terminal 300.
  • a permanent electrical contact is formed under the clamping force of the clamping member 30.
  • the fixed terminal 200 can also be configured in the same manner as described above in cooperation with the first chuck.
  • the thickness of the insertion terminal 300 is set slightly larger than the second chuck 102 is opened.
  • the width of the mouth, under the action of the insertion force F of the insertion terminal 300, the first end portion of the conductive sheet 10 constituting the second chuck 102 is subjected to the component force Fx and the component force Fy.
  • the component force Fx causes the end portion to move in the direction of loosening the insertion terminal 300 and is transmitted to the leaf spring, and the leaf spring is applied to the end of the conductive sheet under the action of the pressing force of the fixing member (the gusset and the locking lever)
  • the reaction force ensures a reliable contact force between the second chuck and the insertion terminal 300. This contact force can be ensured to be large enough to cause the oxide layer inserted into the terminal 300 to be broken to lower the contact resistance.
  • the second end portion of the conductive sheet can independently adjust the degree of contact with the insertion terminal 300 under the action of the component force Fx.
  • the component force Fy acts on the accommodating portion 21 on the support member 20B through the second extension portion 121, and the absorbing force provided by the accommodating portion 21 can keep the flexible conductive portion intact.
  • the movement gap between the adjacent conductive sheet groups allows the end portion to be twisted to achieve self-adaptation of the chuck and the insertion terminal 300.
  • the sexual contact increases the contact area of the insertion terminal 300 with the chuck.
  • the fixed terminal 200 and the first chuck may also form a convex portion and a groove.
  • the fixed terminal 200 is provided with a recess 201.
  • the conductive sheet 10 is provided with a convex portion 15 at a corresponding portion.
  • the convex portion 15 abuts against the recess 201 and forms a line contact at two locations, two The line contact can improve the connection stability of the second chuck and the fixed terminal 200, thereby improving the reliability of the connection of the fixed terminal 200 to the first chuck.
  • the cooperation of the above-mentioned convex portion and the groove is not limited to the case shown in FIG.
  • a groove 201 may be provided on the conductive sheet 10, and a convex portion 15 is provided on the fixed terminal 200.
  • the number of line contacts is not limited to two. By changing the specific shape of the protrusions and the grooves, three or more portions of line contact or surface contact may be formed between the fixed terminal 200 and the first chuck.
  • the pull-out force is opposite to the direction of the insertion force F, so that the connected terminal is detached from the chuck.
  • the insertion terminal 300 rubs against the arcuate contact surface 114 of the second collet.
  • the electrical connection device 100 should be held on the fixed terminal 200 under frictional forces.
  • the length of the finger structure 331A corresponding to the first chuck on the leaf spring is also set shorter than the leaf spring and
  • the length of the corresponding finger structure 331B of the second chuck is such that the two end portions of the conductive sheet have the same displacement amount in the X direction, and the clamping acts on the fixed terminal 200.
  • the force is relatively large to increase the clamping force of the first collet to the fixed terminal 200.
  • the electrical connection device may also be provided with a stopper that prevents the fixed terminal 200 and/or the insertion terminal 300 from coming out in the lateral direction of the chuck (Z direction in FIG. 10).
  • the limiting portion is provided as a baffle 40 which is disposed at the outermost side in the stacking direction of the conductive sheet group and is fixed to the support member 20B, thereby preventing the fixed terminal 200 and/or The insertion terminal 300 slips off from the side of the electrical connection device 100.
  • the stopper portion is not limited to the above-described structure, and the shutter 40 may be integrally formed with the support member or the fixing member.
  • the circuit breaker can be a three-pole circuit breaker or a four-pole circuit breaker.
  • the fixed terminal may further include an inlet end fixed terminal and an outlet end fixed terminal. The number of electrical connection devices provided by the present invention can be matched according to different application settings of the circuit breaker.

Abstract

本申请涉及用于抽出式断路器的电连接装置以及抽出式断路器。本发明提供了一种用于抽出式断路器的电连接装置，包括：至少一个导电片组，所述导电片组包括两个旋转支撑的导电片，所述两个导电片的第一端部和第二端部中的至少一个端部构成用于夹紧被连接端子的夹头，所述夹头的夹紧面由所述至少一个端部彼此相对的侧面界定，并且所述至少一个端部能够沿松开/夹紧所述被连接端子的方向运动；以及夹紧部件，所述夹紧部件能够固定所述导电片组并给插入所述夹头的被连接端子提供夹紧力，其中所述导电片具有与所述至少一个端部相连的柔性导电部，以调整所述至少一个端部与所述被连接端子的接触程度。

Description

用于抽出式断路器的电连接装置以及抽出式断路器 技术领域
本发明涉及低压电器技术领域，具体涉及一种用于抽出式断路器的电连接装置以及抽出式断路器。
背景技术
万能式断路器是低压配电设备中常用的断路器，是一种保护电器。在装有抽屉式装置时，断路器可以实现由于断路器故障、断路器增容和降容等原因的快速更换，并且为断路器的更换提供了方便。断路器包括进线端子和出线端子，抽屉式装置也包括相应的进线端子和出线端子，断路器要在抽屉式装置内推进或抽出，目的是要使断路器的进、出线端子和抽屉式装置的进、出线端子进行接合或分离，起到电连接和电隔离的作用。
现有技术中，抽屉式装置与断路器上相应端子之间的电连接是通过两端带有夹头的电连接组件实现的。该电连接组件通常包括被一个垫片分开的两个指，以及用来将两指压靠在垫片上的弹性回复装置。在垫片的一侧，两指上彼此面对的端部共同构成夹住断路器端子的第一夹头，在垫片的另一侧，两指上彼此面对的端部共同构成夹住抽屉式端子的第二夹头，第一夹头的开放运动通过杠杆作用形成另一夹头的闭合运动。
上述的电连接组件中，两个夹头之间不具有独立性。也就是说，抽屉式端子与断路器端子在各自夹头中的安装情况会互相影响。而断路器端子和抽屉式端子都是安装在硬性的绝缘件上的，往往由于零件的制造误差导致两端子在安装后会出现平行度、直线度、对称度、同轴度等方面的偏差，造成两端子可能朝向不同的方向偏移或倾斜。此时会造成断路器端子和抽屉式端子在各自的夹头内不能实现良好接触，导致接触面积减小、电连接组件承载电流的能力降低等缺陷。
上述的电连接组件中，被垫片分开的两个指分别包括多个叠置的单元 指，单元指之间相互依附，当插入夹头的断路器端子和抽屉式端子偏移或倾斜时，由于单元指没有自由度，因此不能根据断路器端子和抽屉式端子的位置进行自主纠偏，这同样造成断路器端子和抽屉式端子与夹头的接触面积小、导致电连接组件承载电流能力低等缺陷。
当夹头与被连接端子的接触面积减小，单元指得不到充分利用，导致其实际载流面积减小，承载能力变差。而为了满足使用时实际传输的额定电流的要求，则需要通过增加单元指的数量满足接触面积，这会使得产品体积大、材料用量多、成本高、空间占用大。
当夹头与被连接端子的接触面积减小，两者之间的接触电阻增加，这会造成断路器的发热量大、温升高。在此工况下，断路器及其连接元器件的绝缘件会加速老化，容易发生电器事故以及危害人身生命安全。
发明内容
本发明提供了一种用于抽出式断路器的电连接装置。本发明的另一目的在于提供一种抽出式断路器。
用于抽出式断路器的电连接装置，包括：至少一个导电片组，导电片组包括两个旋转支撑的导电片，两个导电片的第一端部和第二端部中的至少一个端部构成用于夹紧被连接端子的夹头，夹头的夹紧面由至少一个端部彼此相对的侧面界定，并且至少一个端部能够沿松开/夹紧被连接端子的方向运动；以及夹紧部件，夹紧部件能够固定导电片组并给插入夹头的被连接端子提供夹紧力，其中导电片具有与至少一个端部相连的柔性导电部，以调整至少一个端部与被连接端子的接触程度。
利用该电连接装置，当被连接端子插入夹头时，形成夹头的导电片的至少一个端部通过与柔性导电部的连接，使得该端部能够沿着松开/夹紧被连接端子的方向运动，从而能够调整该端部与被连接端子的接触程度，改善由于电连接装置与被连接端子的接触面积小而导致的电连接装置承载电流能力低的缺陷。
利用该电连接装置，当导电片的第一端部和第二端部分别形成夹头时，被连接端子与各自夹头的接触情况不会相互影响，具有相对的独立性。以 实现各夹头与相应的被连接端子之间均能实现良好接触，从而改善接触面积小而导致的电连接装置承载电流能力低的缺陷。
根据本发明的一个方面，两个导电片的至少一个端部形成有朝向彼此的支撑部，以使得两个导电片旋转支撑在所述支撑部上。支撑部一体形成在导电片的端部，当被连接端子插入夹头时，组成导电片组的两个导电片可以通过支撑部实现旋转支撑，以使得该端部能够沿松开/夹紧被连接端子的方向运动。
根据本发明的一个方面，电连接装置还包括设置在两个导电片之间的支撑件，两个导电片的至少一个端部具有朝向支撑件的方向延伸的延伸部，两个导电片通过延伸部旋转支撑在支撑件上。
根据本发明的一个方面，支撑件包括容纳部，延伸部被容纳在容纳部内。容纳部可以通过延伸部为导电片提供支反力，避免被连接端子的插入力直接作用在柔性导电部上而使其弯曲，从而降低了被连接端子的插接难度。
根据本发明的一个方面，电连接装置包括以叠置方式布置的多个导电片组，并且多个导电片组中相邻的两个导电片组之间设置有供导电片的至少一个端部扭转的运动间隙。利用本方案，当被连接端子的插入力使得导电片的一个端部产生扭转运动时，运动间隙允许该端部扭转，以实现夹头与被连接端子的自适应性的接触，从而增加夹头与被连接端子的接触面积。此外，该运动间隙还可充当散热间隙，用来降低温升。
根据本发明的一个方面，电连接装置包括间隔部件，间隔部件用于限定运动间隙的最小距离。间隔部件可以保证相邻的两个导电片组之间存在最小的运动间隙和散热间隙，避免相邻两个导电片组的相互贴合。
根据本发明的一个方面，夹紧部件包括：弹簧，弹簧与导电片的至少一个端部抵靠以给插入夹头的被连接端子提供夹紧力；固定件，用于固定弹簧并使弹簧保持对被连接端子的夹紧力。
根据本发明的一个方面，电连接装置还包括限位部，限位部用于防止被连接端子沿夹头的侧向脱出。
根据本发明的一个方面，导电片为如下结构中的任意一种：至少一个 端部与柔性导电部连接而成；至少一个端部与柔性导电部为一体式结构。
根据本发明的一个方面，柔性导电部为软连接线、软编织线、箔片中的任意一者。
本发明还提供了一种抽出式断路器，包括断路器抽屉，断路器抽屉上安装有固定端子；断路器本体，断路器本体上安装有插入端子；以及上述任一项所述的电连接装置；其中，固定端子和插入端子通过电连接装置连接以实现电流的传递。
附图说明
图1是示出根据本发明的导电片的实施例的示意图。
图2是示出根据本发明的第一实施例的电连接装置的示意图。
图3是示出根据本发明的第二实施例的电连接装置的示意图。
图4A是示出根据本发明的第三实施例的电连接装置的立体分解图。
图4B是示出根据本发明的第三实施例的电连接装置的示意图。
图5是示出根据本发明的第四实施例的电连接装置的示意图。
图6是示出根据本发明的第五实施例的电连接装置的示意图。
图7是示出根据本发明的第六实施例的电连接装置的示意图。
图8是示出根据本发明的第七实施例的电连接装置的示意图。
图9是示出根据本发明的第八实施例的电连接装置的示意图。
图10是示出图3中的电连接装置与固定端子和插入端子的连接示意图。
具体实施方式
下文中，参照附图描述本发明的实施例。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的范围由权利要求书限定。
图1是示出根据本发明的导电片的实施例的示意图。
在图1的示例性的实施例中，导电片10包括第一端部11和第二端部12，以及连接第一端部11和第二端部12的柔性导电部13。其中，柔性导 电部13是柔软且易于变形地。柔性导电部13包括但不限于软连接线、软编织线和箔片。柔性导电部13还可以是其它任何可以导电的柔性结构。柔性导电部13的柔性以及可变形性使得第一端部11和第二端部12具有多个自由度的活动特性。该活动特性表现为，第一端部11和第二端部12具有沿导电片的横向方向(图1中的X方向)的转动自由度以及围绕导电片的纵向方向(图1中的Y方向)的转动自由度等。
导电片10有多种构成方式，例如，在一些实施例中，可以将柔性导电部13与第一端部11和/或第二端部12焊接、压接、铆接、螺栓连接、过盈配合等方式连接在一起。但是，导电片10不限于上述的结构。在一些实施例中，柔性导电部13与第一端部11和/或第二端部12还可以为一体式结构。例如，第一端部11和/或第二端部12在柔性导电部13上直接制成。
在图1的示例性的实施例中，导电片10包括第一端部11和第二端部12，上述导电片10的结构大多数情况下适用于电连接装置具有两个夹头的情况。但是，导电片10不限于上述的结构。例如，在其它一些实施例中，导电片10还可以仅包括第一端部11，或者仅包括第二端部12，以适用电连接装置具有一个夹头的情况。
图2是示出根据本发明的第一实施例的电连接装置的示意图。
电连接装置100用于连接电路中的被连接端子，实现电流在被连接端子之间的流通。在图2所示的实施例中，电连接装置100包括多个导电片组，每个导电片组包括两个旋转支撑的导电片10A(导电片10的变型)，导电片10A的第一端部构成第一夹头101，导电片10A的第二端部构成第二夹头102，两夹头的夹紧面由各自端部彼此相对的侧面界定，第一夹头101和第二夹头102通过夹紧部件固定30并给分别插入两夹头的被连接端子提供夹紧力。
利用上述的电连接装置，由于柔性导电部分别与第一端部和第二端部的连接，使得两端部具有沿松开/夹紧被连接端子的方向(图1中的X方向)运动的活动特性，该活动特性能够调整夹头与被连接端子的接触程度，使得夹头与被连接端子的夹持面能够接近甚至达到设计时的最优值，从而 增加电连接装置承载电流的能力。
利用上述的电连接装置，被连接端子与相应夹头的接触情况不会相互影响，形成夹头的两个端部的运动具有相对的独立性，以使得各夹头与相应的被连接端子之间均能实现良好接触，从而改善电连接装置与被连接端子的接触面积，改善电连接装置承载电流能力低的缺陷。
如图2所示，两个导电片10A的第一端部和第二端部分别形成有支撑部20A，支撑部20A朝向对方的方向延伸并相互接触，当被连接端子分别插入第一夹头101和第二夹头102，支撑部20A能够给两个导电片10A提供旋转支撑，以使得导电片的第一端部和第二端部能够沿松开/夹紧被连接端子的方向运动。并且支撑部20A还可以用来限制第一夹头101和第二夹头102的开口大小。
夹紧部件用于固定夹头并给插入夹头的被连接端子提供夹紧力。夹紧部件包括弹簧和固定件，弹簧与导电片的至少一个端部抵靠以给插入该夹头的被连接端子提供夹紧力，固定件用来固定弹簧并使弹簧保持对被连接端子的夹紧力。
在图2所示的实施例中，夹紧部件30包括板簧31、联接片32和锁定杆33。板簧31从夹头的外侧与导电片10A的两端部贴合，在导电片10A的第一端部和第二端部分别形成有对板簧31进行限位的边沿14，板簧31可在两个边沿14之间产生较小的位移，但并不影响板簧31所要实现的功能。联接片32的两端伸出板簧31。在联接片32伸出板簧31的端部分别设置锁止孔321，锁定杆33分别穿入锁止孔321内，以压紧板簧31。
板簧31与导电片10A的第一端部和第二端部对应形成有彼此分离的指状结构311，指状结构311能够增加单个导电片10的两个端部的自由度以加强其活动特性。
联接片32上的锁止孔321可以设置为长形孔，长形孔的延伸方向沿着板簧31被压紧的方向延伸。当安装锁定杆33时，长形孔能够方便锁定杆33的穿入。但是，锁止孔321不限于上述的结构，锁止孔可以是例如圆形、方形或与锁定杆33相匹配的其他形状。
锁定杆33上还设置有轴向定位部331，以实现锁定杆33在其轴向方 向的定位。轴向定位部331为设置在锁定杆33上的周向凹槽，凹槽的侧壁边沿可与锁止孔321的边沿配合实现定位。轴向定位部331不限于上述的结构，根据一个实施例，轴向定位部331还可以是设置在锁定杆33上的凸缘，通过凸缘与锁止孔321的边沿配合实现定位。
联接片32的数量可以根据导电片组的数量而定。当导电片组的个数较多时，联接片32可以沿导电片组的叠置方向设置有多个，这样作用在板簧31上的压紧力会更加均匀。相应地，板簧31施加于导电片的第一端部和第二端部的弹性力会更加均匀。
在图2所示的实施例中，导电片通过支撑部20A实现旋转支撑。但是，导电片的旋转支撑不限于上述的结构。可选择地，如图3所示，图3是示出根据本发明的第二实施例的电连接装置的示意图。电连接装置100A包括支撑件20B，支撑件20B可以设置成大致的“工”字形，导电片10与支撑件20B的旋转支撑更具体的是导电片10与支撑件20B的上横梁和下横梁的旋转支撑。具体地，导电片10从第一端部11向支撑件20B的方向延伸出第一延伸部111，导电片10从第二端部12向支撑件20B的方向延伸出第二延伸部121，第一延伸部111与支撑件20B的下横梁旋转支撑，第二延伸部121与支撑件20B的上横梁旋转支撑。
在图3的示例性的实施例中，支撑件20B还设置有容纳部21，容纳部21设置在支撑件20B上横梁的两端，第二延伸部121被容纳在容纳部21内。当被连接端子插入夹头时，容纳部21通过第二延伸部121为导电片提供支反力，避免插入力作用于柔性导电部使其弯曲，造成插装困难。
同理，在支撑件20B的下横梁的两端也可以设置容纳部，用于容纳第一延伸部111。
但是，支撑件20B不限于上述的结构，根据电连接装置具体结构的不同，支撑件20B还有其他设置方案。
在图2～3所示的实施例中，电连接装置包括以叠置方式布置的多个导电片组，多个导电片组中相邻的两个导电片组之间设置有供第一端部和第二端部扭转的运动间隙。该运动间隙允许第一端部和第二端部在被连接端子的插入力作用下扭转，以实现夹头与被连接端子的自适应性的接触，从 而增加夹头与被连接端子的接触面积。同时，该运动间隙还可充当散热间隙，用来降低温升。
此外，相邻的两个导电片组之间还设置有间隔部件，间隔部件用于限定运动间隙的最小值。如图3所示，间隔部件可以是形成在第一端部和第二端部的凸起112，当被连接端子分别插入两夹头并且使第一端部和第二端部分别受到以Y方向为中心的扭转力矩时，凸起112可作为相邻的两个导电片组之间的支撑，以保证相邻两个导电片组之间最小的运动间隙。凸起112可以是弧形凸起，球形凸起或柱形凸起等等。但是，间隔部件不限于图3所示出的结构。在一些实施例中，间隔部件还可以采用单独设置的杆件，该杆件以焊接、粘接或螺纹连接等方式安装在第一端部和/或第二端部，以使得相邻的导电片组之间以该杆件的长度尺寸保证最小的运动间隙和散热间隙。在一些实施例中，间隔部件还可以是设置在支撑件20B上的多个凸台，并且将凸台在宽度方向的尺寸设置成与运动间隙的最小值相等。
需要说明的是，根据断路器的用途特别是按照其所承载的额定电流，电连接装置可以包含更多或更少的导电片组，存在包括一个导电片组的情况。这样的结构能够很方便的实现电连接装置的系列化，从而降低设计和加工成本。
在图2～图3所示的实施例中，夹紧部件30采用了相同的结构。但是，夹紧部件不限于图2～图3所示出的结构。例如，在图2～图3所示的实施例中，支撑件20B与联接片32可以设置成一体式结构。此外，夹紧部件中的弹簧还可以是拉簧、压簧、扭簧、异形簧、固体弹簧等任何能够通过弹性力给被连接端子提供夹紧力的结构。并且根据弹簧的具体形式的不同，固定件的结构也有所不同，固定件可以选用轴销、螺栓、铆钉等。如图4～图8所示，图4～图8是示出根据本发明的第三、四、五、六、七实施例的电连接装置的示意图。
在图4A～图5所示的实施例中，弹簧采用异形簧31A和31B，异形簧的形状被构造成，在预紧力的作用下异形簧31A和31B能够对两个导电片的第一端部和第二端部施加分别朝向各自夹头中心的夹紧力，固定件32A和32B用于分别固定异形簧31A和31B。异形簧的结构不限于图4A～图5 所示出的形状和结构，根据弹性力作用形式的不同，异形簧可以是异形拉簧、异形扭簧或者是异形压簧。在图5所示的实施例中，各导电片组相互独立，导电片组的数量可以根据断路器的应用场合灵活选择。
在图6所示的实施例中，弹簧设置为压簧31C，压簧31C被压紧在夹头的两侧，压簧的弹性回复力给插入夹头的被连接端子提供夹紧力。固定件为抵靠在压簧上的固定板32C，固定板32C上设置有连接孔33C，紧固件穿过连接孔33C锁定固定板32C以使得压簧保持夹紧力。
在图7～图8所示的实施例中，弹簧采用板簧，固定件采用框架。例如，可以采用图7所示的一体式结构的框架32D，也可以是图8所示的分体式结构的框架32E，分体式框架32E可通过焊接、铆接等连接固定。
在图2～图3所示的实施例中，导电片的第一端部和第二端部均构成夹头。但是，电连接装置不限于上述的结构。如图9所示，图9示出了导电片10B(导电片10的变型)仅第一端部构成夹头的示意图。一个被连接端子200插入夹头，另一被连接端子300与柔性导电部焊接连接。但是，被连接端子300与柔性导电部不限于焊接连接，还可是铆接、压接、螺栓连接以及采用过盈配合等方式的连接。
本发明还提供了一种抽出式断路器，包括断路器抽屉，断路器本体和上述的电连接装置，断路器抽屉上安装有固定端子，断路器本体上安装有插入端子，固定端子和插入端子通过该电连接装置连接以实现电流传递。
图10是图3中示出的电连接装置与固定端子和插入端子的安装示意图。在图10所示的实施例中，固定端子200安装在电连接装置100A的第一夹头内，插入端子300安装在电连接装置100A第二夹头内。
这里以插入端子300与第二夹头的配合为例说明。第二夹头的内侧设置有方便插入端子300插入的导向面113以及用于与插入端子300实现电接触的弧形凸面114。当插入端子300沿着导向面113进入第二夹头内并与弧形接触面114接触后，即在夹紧部件30的夹紧力的作用下形成永久性的电接触。当然，固定端子200与第一夹头配合也可以采用与上述相同的设置。
通常在设计时，插入端子300的厚度会设置的略大于第二夹头102开 口处的宽度，在插入端子300的插入力F的作用下，构成第二夹头102的导电片10的第一端部会受到分力Fx和分力Fy。分力Fx使该端部向松开插入端子300的方向运动，并传递给板簧，在固定件(联接片和锁定杆)的压紧力的作用下，板簧施加给导电片的端部反作用力，从而保证第二夹头与插入端子300之间可靠的接触力。该接触力能够保证足够大，以使得插入端子300的氧化层碎裂以降低接触电阻。
插入端子300在插入过程中，由于柔性导电部的柔性和可变形性，导电片第二端部能够在分力Fx的作用下自主调节与插入端子300的接触程度。分力Fy通过第二延伸部121作用于支撑件20B上的容纳部21，容纳部21提供的支反力可以使得柔性导电部保持原状。
当插入端子300的插入力F导致导电片的端部沿Y方向产生扭转运动时，相邻的导电片组之间的运动间隙允许该端部扭转，以实现夹头与插入端子300的自适应性的接触，使得插入端子300与夹头的接触面积增大。
在图10所示的实施例中，固定端子200与第一夹头还可以形成凸部与凹槽配合。如图10所示，固定端子200上设置有凹槽201，导电片10在相应的部位设置有凸部15，凸部15抵靠在凹槽201内并在两个部位形成线接触，两条线接触可提高第二夹头和固定端子200的连接稳定性，从而提高固定端子200与第一夹头连接的可靠性。但是，上述凸部与凹槽的配合不仅限于图10所示出的情况。例如，在一些实施例中，还可以在导电片10上设置有凹槽201，在固定端子200上设置有凸部15。此外，线接触的数量也不限于两条，通过改变凸部与凹槽具体形状，固定端子200与第一夹头之间可以形成三条或更多部位的线接触或面接触。
反之，在对断路器本体执行拉出操作时，拉出力与插入力F的方向相反，使得被连接端子从夹头中脱出。插入端子300与第二夹头的弧形接触面114发生摩擦。在摩擦作用力下，电连接装置100应该保持在固定端子200上。为了保证上述要求，除了设置适当的夹紧力外，在图10所示的实施例中，还将板簧上与第一夹头相对应的指状结构331A的长度设置成短于板簧与第二夹头相应的指状结构331B的长度，以使得导电片的两个端部在沿X方向具有相同的位移量的情况下，作用在固定端子200上的夹紧 力则相对较大，以增加第一夹头对固定端子200上的夹紧力。
电连接装置还可以设置有防止固定端子200和/或插入端子300沿夹头侧向(图10中的Z向)脱出的限位部。在图10所示的实施例中，限位部设置为挡板40，挡板40设置在导电片组的叠置方向的最外侧并与支撑件20B固定，以此防止固定端子200和/或插入端子300从电连接装置100的侧向滑脱。但是，限位部不限于上述的结构，挡板40还可以与支撑件或固定件一体形成。
根据断路器的应用，断路器可以是三极断路器或四极断路器等。并且根据断路器内部结构的不同，固定端子还可以包括进线端固定端子和出线端固定端子。本发明提供的电连接装置数量可以根据断路器不同的应用匹配设置。
尽管已经参考示例性实施例描述了本发明，但是应理解，本发明并不限于上述实施例的构造。相反，本发明意在覆盖各种修改例和等同配置。另外，尽管在各种示例性结合体和构造中示出了所公开发明的各种元件，但是包括更多、更少的元件的其它组合也落在本发明的范围之内。
尽管已经参考示例性实施例描述了本发明，但是应理解，本发明并不限于上述实施例的构造。相反，本发明意在覆盖各种修改例和等同配置。另外，尽管在各种示例性结合体和构造中示出了所公开发明的各种元件，但是包括更多、更少的元件的其它组合也落在本发明的范围之内。

Claims (11)

  1. 一种用于抽出式断路器的电连接装置，包括：
    至少一个导电片组，所述导电片组包括两个旋转支撑的导电片，所述两个导电片的第一端部和第二端部中的至少一个端部构成用于夹紧被连接端子的夹头，所述夹头的夹紧面由所述至少一个端部彼此相对的侧面界定，并且所述至少一个端部能够沿松开/夹紧所述被连接端子的方向运动；以及
    夹紧部件，所述夹紧部件能够固定所述导电片组并给插入所述夹头的被连接端子提供夹紧力，其中
    所述导电片具有与所述至少一个端部相连的柔性导电部，以调整所述至少一个端部与所述被连接端子的接触程度。
  2. 根据权利要求1所述的电连接装置，其特征在于，所述两个导电片的所述至少一个端部形成有朝向彼此的支撑部，以使得所述两个导电片通过所述支撑部实现旋转支撑。
  3. 根据权利要求1所述的电连接装置，其特征在于，还包括设置在两个导电片之间的支撑件，所述两个导电片的所述至少一个端部具有朝向所述支撑件的方向延伸的延伸部，以使得所述两个导电片通过所述延伸部旋转支撑在所述支撑件上。
  4. 根据权利要求3所述的电连接装置，其特征在于，所述支撑件包括容纳部，所述延伸部被容纳在所述容纳部内。
  5. 根据权利要求1至4中任一项所述的电连接装置，其特征在于，包括以叠置方式布置的多个导电片组，并且所述多个导电片组中相邻的两个导电片组之间设置有供所述导电片的所述至少一个端部扭转时的运动间隙。
  6. 根据权利要求5所述的电连接装置，其特征在于，还包括间隔部件，所述间隔部件用于限制所述运动间隙的最小距离。
  7. 根据权利要求1所述的电连接装置，其特征在于，所述夹紧部件包括：
    弹簧，所述弹簧与所述至少一个端部抵靠以给插入所述夹头的被连接端子提供夹紧力；
    固定件，用于固定所述弹簧并使所述弹簧保持对被连接端子的夹紧力。
  8. 根据权利要求1至4中任一项所述的电连接装置，其特征在于，还包括限位部，所述限位部用于防止所述被连接端子沿所述夹头的侧向脱出。
  9. 根据权利要求1所述的电连接装置，其特征在于，所述导电片为如下结构中的任意一种：
    所述至少一个端部与所述柔性导电部连接而成；
    所述至少一个端部与所述柔性导电部为一体式结构。
  10. 根据权利要求1所述的电连接装置，其特征在于，所述柔性导电部为软连接线、软编织线、箔片中的任意一者。
  11. 一种抽出式断路器，包括
    断路器抽屉，所述断路器抽屉上安装有固定端子；
    断路器本体，所述断路器本体上安装有插入端子；以及
    权利要求1至10中任一项所述的电连接装置；
    其中，所述固定端子和所述插入端子通过所述电连接装置连接以实现电流传递。
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