CN102709076A

CN102709076A - Electric connection device for electric switch

Info

Publication number: CN102709076A
Application number: CN2012101844342A
Authority: CN
Inventors: 刘春霞; 林麟; 郭学凤; 李永林
Original assignee: Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Current assignee: Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2012-10-03

Abstract

The invention relates to a conductive connection device of an electric switch, which separates the two functions of optimizing the electric field and carrying current of the contact base in the prior art, and divides it into a shielding cover for optimizing the electric field and a shield for responsible For the current-carrying contact seat, the contact fingers and the insulating guide ring are respectively installed on the outer peripheral surface of the contact seat, and the limit platform protruding from the outer periphery of the contact seat prevents the conductive tube from moving on the outer periphery of the contact seat. Move, the buffer structure installed between the limiting platform and the contact finger installation groove prevents the conductive tube from contacting the limiting platform, thereby removing the blind hole structure of the contact seat in the prior art, and avoiding the conductive tube through the limiting platform The collision between the tube and the shielding cover avoids the collision between the conductive tube and the limit platform through the buffer structure, and avoids the damage caused by the collision of the conductive tube during use, so that the external volume and quality of the contact seat are reduced, and the The processing difficulty of the contact seat is reduced, and the manufacturing cost of the contact seat is reduced.

Description

A kind of conductive connecting device of electric switch

Technical field

The present invention relates to the electric equipment technical field, relate in particular to a kind of conductive connecting device of electric switch.

Background technology

At present; In the Cubicle Gas-Insulated Switchgear; Bus and the contact form that is electrically connected mainly contain two kinds of compression joint type and plug-in types, wherein the plug-in type contact base that has spring touch finger or watchband fingertip, perhaps mounting spring fingertip or the watchband fingertips on contact tube of adopting more.For example application number is that 200820228958.6 Chinese invention patent discloses a kind of Cubicle Gas-Insulated Switchgear conductive connecting device; Be used for fixing in this conductive connecting device and on the contact base of the column on the connection inserts of insulating basin, offer the blind hole that supplies contact tube to stretch into; And on the hole wall of blind hole, offer be used for the mounting spring fingertip with the insulation guide ring annular groove; But along with the technical parameters such as rated current of Cubicle Gas-Insulated Switchgear are increasingly high; According to the skin effect of alternating current, the diameter of section size of contact base wherein and contact tube is also made bigger and bigger, and this contact base that generally uses is by the block of metal manufacturing; It need be taken into account and optimize electric field and carry the through-flow two kinds of functions of conductor; So exist switch parameter high more, self overall volume and the quality of contact base are big more, the problem that manufacturing cost is high more.

Summary of the invention

The present invention proposes a kind of conductive connecting device of electric switch, self overall volume and the quality that are intended to solve contact base in the prior art are big, the problem that manufacturing cost is high.

The technical scheme of the conductive connecting device of electric switch of the present invention is following:

A kind of conductive connecting device of electric switch; The contact tube that comprises the contact base of column and be used for being electrically connected with contact base; Be equiped with the fingertip that is electrically connected with contact tube on the said contact base and be in contact base and contact tube between the insulation guide ring; And on contact base, offer be used to install the fingertip mounting groove of fingertip and be used to install the insulation guide ring the guide ring mounting groove; Said fingertip mounting groove and guide ring mounting groove all are on the periphery of contact base; Said contact tube inserting is around the outer peripheral face of contact base; And around contact base, be covered with the radome that is used to wrap up contact tube and contact base connecting portion; Said fingertip all has the outer peripheral face that exposes and contact with the internal face of contact tube from the outer peripheral face of contact base with the insulation guide ring, convex with on the outer peripheral face of said contact base be in the fingertip mounting groove away from a side of guide ring mounting groove be used to stop contact tube axially movable limiting stand on the outer peripheral face of contact base, and be provided with between limiting stand and the fingertip mounting groove and be used to the buffer structure that stops contact tube to contact with limiting stand.

Offer on the said contact base and be used for using the hole through attachment screw with the screw on the connection inserts that contact base is fixed on insulating basin, said screw is with hole extending axially along contact base.

Offer on the described contact base along its axially extended blind hole, described screw is opened on the cecum hole wall of said blind hole with the hole.

Said screw uses the hole to be counter sink, and described screw has the countersunk head section on every side that is used to be wrapped in the attachment screw head with the hole.

Described screw has at least two with the hole, and all screws are distributed on the cross section of contact base with span.

Said contact tube has the link that is connected with the bus-bars conductor one of being used for away from contact base.

Said radome is the thin-walled rotary shell of being processed by the thin-wall metal plate.

Said fingertip is watchband fingertip or spring touch finger.

Said contact tube is the conducting metal hollow tube.

Said buffer structure comprises cushion pad or the buffer spring on the periphery that is used to be installed in contact base.

The optimization electric field that the present invention has contact base of the prior art and two kinds of functions of loaded current are separated; Be divided into the radome and the contact base that is used for being responsible for loaded current that are used to optimize electric field, fingertip and insulation guide ring are installed in respectively on the outer peripheral face of contact base, and the limiting stand that is convexly equipped with on the periphery through contact base stops contact tube moving on the contact base periphery; Stop contact tube to contact through the buffer structure of installing between limiting stand and the fingertip mounting groove with limiting stand; Thereby the blind hole structure of contact base in the prior art is removed, and avoided the collision of contact tube and radome, avoided the collision of contact tube and limiting stand through buffer structure through limiting stand; The damage of having avoided contact tube in use to cause because of collision; Make the overall volume and the quality of contact base reduce, and reduced the difficulty of processing of contact base, reduced the manufacturing cost of contact base; And then self overall volume and the quality that have solved contact base in the technology are big, problem that manufacturing cost is high.

Description of drawings

Fig. 1 is the structural representation of embodiments of the invention 1;

Fig. 2 is the structural representation of embodiments of the invention 2;

Fig. 3 is the structural representation of embodiments of the invention 3;

Fig. 4 is the structural representation of embodiments of the invention 4;

Fig. 5 is the structural representation of embodiments of the invention 5;

Fig. 6 is the structural representation of embodiments of the invention 6.

Embodiment

The embodiment 1 of the conductive connecting device of electric switch of the present invention: as shown in Figure 1; This conductive connecting device comprise the fixing insulating basin 1-2 of the port of housing 1-1, housing 1-1, insulating basin 1-2 go up the connection inserts 1-3 that is provided with, connect inserts 1-3 go up contact base 1-5, contact base 1-5 through the fixing column of attachment screw 1-4 and connect on the periphery that is embedded the insulation guide ring 1-7 and the spring touch finger 1-8 that install on the periphery of fixing radome 1-6, contact base 1-5 between the inserts 1-3, is plugged in contact base 1-5 and with the contact tube 1-9 of insulation guide ring 1-7 and spring touch finger 1-8 contact matching; Wherein, Contact tube 1-9 is wholely set away from the link and the bus-bars conductor of contact base; Radome 1-6 have the closing in end 1-6-1 that is embedded between the connection inserts 1-3 of contact base 1-5 and insulation plate 1-2 and with the 1-6-2 that dehisces to hold of the outer peripheral face matched in clearance of contact tube 1-9; Offer the fingertip mounting groove 1-5-1 of installing spring touch finger 1-8 and the guide ring mounting groove 1-5-2 of installing insulation guide ring 1-7 on the periphery of contact base 1-5, and spring touch finger 1-8 exposes from the outer peripheral face of contact base 1-5 all with insulation guide ring 1-7; And be used for using hole 1-5-3 with the screw on the connection inserts 1-3 that contact base 1-5 is fixed on insulating basin 1-2 offering on the contact base 1-5 through attachment screw 1-4; And screw is with hole 1-5-3 extending axially along contact base 1-5; On the outer peripheral face of contact base 1-5, convex with the limiting stand 1-5-4 that is in fingertip mounting groove 1-5-1 away from the side of guide ring mounting groove 1-5-2; And between limiting stand 1-5-4 and fingertip mounting groove 1-5-1, being provided with the buffer structure that is used to stop contact tube 1-9 and limiting stand 1-5-4 collision, this buffer structure is the cushion pad 1-5-5 that is installed on the contact base 1-5 periphery.

Present embodiment in use; Earlier contact base 1-5 is fixed on being connected on the inserts 1-3 of insulating basin 1-2 with radome 1-6 through attachment screw 1-4; To insulate then guide ring 1-8 and spring touch finger 1-7 is installed in respectively in the guide ring mounting groove 1-5-2 and fingertip mounting groove 1-5-1 that offers on the contact base 1-5; Contact tube 1-9 is inserted among the radome 1-6, the inside pipe wall that makes contact tube 1-9 simultaneously respectively with insulation guide ring 1-8 and spring touch finger 1-7 contact matching; Limiting stand 1-5-4 and contact base 1-5 are structure as a whole, the main purpose that limiting stand 1-5-4 is set be prevent contact tube 1-9 install with use in the transition displacement, and impact shield cover 1-6 causes radome 1-6 to be out of shape and influences the function of electric field shielding; The purpose of reload buffer structure 1-5-5 is to avoid limiting stand 1-5-4 directly to contact with contact tube 1-9, causes both collsion damages.

Radome 1-6 is formed by thin-wall metal sheet material spinning or is cast as thin-wall construction as required in the present embodiment, and the electric field structure that the profile of radome 1-6 is optimized as required and deciding; Fingertip mounting groove 1-5-1 quantity (is containing one) more than one, (contains four) below four, and concrete quantity determines according to the through-current capability between required contact tube 1-9 and the contact base 1-5; Contact tube 1-9 and bus-bars conductor are wholely set; And contact tube 1-9 is the hollow tube of being processed by electric conducting material; Like electric conducting materials such as aluminium, aluminium alloy, copper, copper alloys; Because exempted contact tube 1-9 is welded on the structure on the fixed contact main body (not shown),, thereby has reduced the processing and manufacturing cost and practiced thrift metal material so contact tube 1-9 also can be with processing through thin-walled material such as simple finished pipe profile; Insulation guide ring 1-7 is installed in the side of fingertip mounting groove 1-5-2, is used to guide the correct contact spring fingertip of contact tube 1-9 1-8, avoids contact tube 1-9 to depart from the axial of contact base 1-5 simultaneously.

Present embodiment is primarily aimed at through-current capability and requires low, low to the overall dimension required precision of contact base 1-5 conductive connecting device; Because of self sectional area of contact base 1-5 in this structure little; The screw of being inconvenient to be provided with the counter sink structure is used hole 1-5-3, thereby bolt uses hole 1-5-3 to be clear opening, and bolt can be one or at least two with the quantity of hole 1-5-3; When bolt uses hole 1-5-3 to be one; Bolt is with hole 1-5-3 and the coaxial setting of contact base 1-5, and when bolt used hole 1-5-3 at least two, bolt made progress with the week that hole 1-5-3 is evenly distributed on contact base 1-5.

The embodiment 2 of the conductive connecting device of electric switch of the present invention: as shown in Figure 2; The difference of present embodiment and embodiment 1 is; In the present embodiment; The screw of offering on the contact base 2-5 uses hole 2-5-3 to be counter sink, and screw has the countersunk head section 2-5-4 on every side that is used to be wrapped in attachment screw 2-4 head with hole 2-5-3.Screw has two with hole 2-5-3, and two screws are provided with hole 2-5-3 each other at interval.

Area because of self cross section of contact base 2-5 in the present embodiment is bigger; The above spring touch finger 1-7 of two circles can be installed on the periphery because of this contact base 2-5 again more; Be set to counter sink so offer screw on need contact base 2-5 with hole 2-5-3, to reduce the length of attachment screw, through the head 2-4-1 of contact base 2-5 shielding attachment screw 2-4; Increase the uniformity of Electric Field Distribution, reduce the sole mass of contact base 2-5.In addition, screw also is to decide according to actual conditions with the concrete quantity of hole 2-5-3.

The embodiment 3 of the conductive connecting device of electric switch of the present invention: as shown in Figure 3; The difference of present embodiment and above-mentioned two embodiment is; Offer on the contact base 3-5 along its axially extended blind hole 3-5-3, and screw just is opened on the cecum 3-5-5 hole wall of blind hole 3-5-3 with hole 3-5-4.

Present embodiment is primarily aimed at the demanding conductive connecting device of through-current capability; Because of self sectional area of contact base 3-5 in this structure big; So can contact base 3-5 be offered blind hole 3-5-3 through manufacturing process such as casting, forging, machine works on contact base; Reducing the length of bolt, and can shield the head 3-4-1 of attachment screw 3-4, reach the purpose of uniform electric field distribution through this blind hole 3-5-3 with hole 3-4; And wherein the concrete quantity of attachment screw 3-4 is no less than three generally speaking, and is evenly distributed on the cecum 3-5-5 end face of blind hole 3-5-3.

The embodiment 4 of the conductive connecting device of electric switch of the present invention: as shown in Figure 4, the difference of present embodiment and embodiment 1 is, the cushion pad 1-5-5 among the embodiment 4 is replaced with buffer spring 4-5-5.

The purpose one of the buffer spring 4-5-5 that installs additional in the present embodiment is to avoid limiting stand 1-5-4 directly to contact with contact tube 1-9, causes both to damage; The 2nd, utilize the characteristic of length of spring compressed energy storage, make things convenient for installation and the dismounting of contact tube 1-9.

The embodiment 5 of the conductive connecting device of electric switch of the present invention: as shown in Figure 5, the difference of present embodiment and embodiment 2 is, the cushion pad 2-5-5 among the embodiment 2 is replaced with buffer spring 5-5-5.

The embodiment 6 of the conductive connecting device of electric switch of the present invention: as shown in Figure 6, the difference of present embodiment and embodiment 3 is, the cushion pad 3-5-6 among the embodiment 3 is replaced with buffer spring 6-5-5.

In the above-described embodiments, the fingertip of installing in the fingertip mounting groove is a spring touch finger, and in other embodiments, this spring touch finger also can be replaced with the watchband fingertip.

In the above-described embodiments; Contact base is fixed on the connection inserts on the insulating basin through attachment screw; In other embodiments; Contact base also can be fixed on the connection inserts on the insulating basin through modes such as welding, bolt connections, and the connected mode that wherein bolted connected mode is fixedly connected with attachment screw is similar, belongs to the technology that art technology person knows and therefore repeats no more.

In the above-described embodiments; The buffer structure that is arranged between fingertip mounting groove and the limiting stand is cushion pad or buffer spring, in other embodiments, this buffer structure also can for limiting stand near elastic component fixing on the side side of fingertip mounting groove; For example, resilient rubbber cushion or annular inflatable tire.

Claims

1. A conductive connection device for an electric switch, comprising a columnar contact seat and a conductive tube for being electrically connected to the contact seat, the contact seat is equipped with a contact finger electrically connected to the conductive tube and a The insulating guide ring between the seat and the conductive tube, and the contact finger installation groove for installing the contact finger and the guide ring installation groove for installing the insulating guide ring are opened on the contact seat, and the feature is: the contact Both the finger mounting groove and the guide ring mounting groove are located on the outer periphery of the contact seat, the conductive tube is fitted around the outer peripheral surface of the contact seat, and a cover is provided around the contact seat for wrapping the conductive tube and the contact seat. The shielding cover of the connection part, the contact fingers and the insulating guide ring have an outer peripheral surface exposed from the outer peripheral surface of the contact seat and in contact with the inner wall surface of the conductive tube, and the outer peripheral surface of the contact seat is protruded with a contact Refers to the limit platform on the side of the installation groove away from the guide ring installation groove to prevent the conductive tube from moving axially on the outer peripheral surface of the contact seat, and there is a stop between the limit platform and the contact finger installation groove to prevent conduction. The buffer structure for the contact between the tube and the limit table.

2. The conductive connection device of an electric switch according to claim 1, characterized in that: the top of the contact seat is provided with a screw for fixing the contact seat on the connection insert of the insulating basin through the connecting screw. The hole for the screw extends along the axial direction of the contact seat.

3. The conductive connecting device of an electric switch according to claim 2, characterized in that: said contact seat is provided with a blind hole extending along its axial direction, and said screw hole is provided in said blind hole on the wall of the blind end hole.

4. The conductive connecting device of an electric switch according to claim 2, characterized in that: the hole for the screw is a countersunk hole, and the hole for the screw has a countersunk for wrapping around the head of the connecting screw part.

5. The conductive connecting device of an electric switch according to any one of claims 1 to 4, characterized in that: there are at least two holes for the screws, and all the holes for the screws are distributed at intervals on the transverse direction of the contact seat. section.

6 . The conductive connecting device of an electric switch according to any one of claims 1 to 4 , wherein the conductive tube has a connecting end far away from the contact seat for integral connection with the busbar conductor. 7 .

7. The conductive connecting device of an electric switch according to any one of claims 1 to 4, characterized in that: the shielding case is a thin-walled rotating casing made of a thin-walled metal plate.

8. The conductive connection device of an electric switch according to any one of claims 1 to 4, wherein the contact fingers are strap contacts or spring contact fingers.

9. The conductive connecting device of an electric switch according to any one of claims 1 to 4, wherein the conductive tube is a conductive metal hollow tube.

10. The conductive connection device of an electric switch according to any one of claims 1 to 4, wherein the buffer structure includes a buffer pad or a buffer spring for being installed on the outer periphery of the contact seat.