CN1305653A

CN1305653A - Insulation piercing connecting device

Info

Publication number: CN1305653A
Application number: CN99807196A
Authority: CN
Inventors: 彼得·阿德尔芬格; 克劳斯·布希; 迈克尔·吉塞尔曼; 约翰·赫尔曼; 约翰·霍夫里克特; 诺伯特·索格尔; 鲁道夫·齐默尔曼; 伯恩德·赫斯特; 汉斯于尔根·林德; 尤维·纽曼
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1998-06-08
Filing date: 1999-05-31
Publication date: 2001-07-25
Anticipated expiration: 2019-05-31
Also published as: WO1999065110A1; DE59902413D1; EP1086511A1; CN1125503C; JP2002518797A; EP1086511B1

Abstract

An insulation piercing connecting device for contacting a non-striped terminal of an electrical conductor. The opposite contact arms (3, 4) of the insulation piercing connecting device encompass a gap (5) for insulation piercing connection that is shaped in the form of an inverted Y. The edges (7, 8) of the head of the Y-shape delimiting an insertion hole (6) and forming a V-shape in relation to each other form a cutting area to pierce the conductor insulation. The edges (9, 10) of the base of the Y-shape that are substantially parallel in relation to each other form a clamping contact area (24). The edges (7, 8) of the head of the Y-shape are undulated in their longitudinal direction in the form of a knife for domestic use.

Description

Insulation piercing connecting device

The present invention relates to a kind of insulation piercing connecting device, be used to contact an electric lead end of not removing insulated hull with feature of claim 1 preamble.

In the disclosed a kind of insulation piercing connecting device of making by a tabular contact material of German patent DE 4403278A1, between two contact legs, constitute a clamp groove, its cutting edge respect to one another extends in parallel to each other.Based on flexible contact material, the lead of two different-diameters also can be sandwiched in the contact area, to realize dual contact.Yet the diameter range of the lead that remains to be contacted but is subjected to constituting the restriction of physical dimension of the clamp groove of contact area.

In addition, European patent EP 0274948A1 discloses a kind of insulation piercing connecting device with V-arrangement contact zone.Its cutting edge forms the circular arc contact zone.The cutting leg is a rigidity, does not have any clamping action.Dwindle direction when by extruding lead being inserted what insert the district along V-arrangement, the cutting edge of the relative orientation of cutting leg penetrates the insulating barrier of lead, reaches wire stylet.Lead being fixedly clamped in the contact zone realized by means of a lever arm.This known insulation piercing connecting device also is limited for the scope of application of the lead of different-diameter.

The objective of the invention is to create a kind of insulation piercing connecting device that starts described type, it need not to remove insulated hull just can make the class electric lead in a big conductive wire cross-section zone all can realize contacting.At this, the cross-sectional area of lead is 0.5 and 2.5mm ²Between.Not only solid conductor can be contacted, and thin lead can be contacted.In addition, should guarantee that this binding post compares with bar clamp and have high hot strength.At last, this insulation piercing connecting device is an all available simple tools when installation and dismounting, and for example a screwdriver is finished.

Purpose of the present invention realizes by claim 1.Wherein, the insulating barrier of lead is penetrated in its effective cutting area.This realizes with special effective and efficient manner by a cutting blade that has wave groove (Wellenschliff), in contact and insert when not removing the lead of insulated hull, this cutting blade applies a pulsating force, and can on wire stylet, not act on excessive pressure, and avoided on lead, forming this rough sledding of otch.Real clamping contact occurs between two substantially parallel leg ribs of Y shape in the formed clamping contact zone.

The effect of claim 2 pair cutting blade bellows-shaped has been done improvement.The acute angle of cutting blade and relief angle thereof make that the insertion of lead is easier.Claim 3 also is to be used to make the insertion of lead easier.According to claim 4, the orientation that the contact leg departs from clamping the contact zone therewith.Therefore, the contact leg has a shape that is similar to barb in clamping the contact zone, and this shape can make clamping force increase when outwards pullling lead.

Penetrating under the situation of insulating barrier with respect to the inclination that clamps the contact groove by claim 5 described (plane of qualification patchhole) contact leg, lead can insert in the reception space of binding post.According to claim 6, particularly claim 7 by patchhole is contacted the design of the transitional region between the groove with clamping, further makes lead to be inserted into.Combine with claim 9, it also has the effect that will be pressed in owing to the wire termination that lead cutting not have to insulate on the backstop of contact, and therefore, contact backstop has formed an additional lead contact-making surface.

Suitable is that binding post is made (claim 10) by bimetallic.Advantageously, it is made of an independent monomer bimetallic section.For example the elasticity of steel and the conductivity of aluminium can be combined.When contact point place or contact zone are heated, according to the form of implementation of insulation piercing connecting device of the present invention, be not the decline that causes contact force, thereby and contact resistance is increased, but just in time in contrast.That is, advantageously made full use of the different thermal coefficient of expansion of bimetal piece, that is, and bimetallic effect.

Claim 11 has guaranteed that this insulation piercing connecting device has good especially elasticity.This embodiment has formed a kind of spring forceps, its can realize according to cross section to the cutting-and/or clamping force control.At last, provide relevant with the external diameter of a lead basically special stop part, the type of stop part can have multiple.This can realize by the form of implementation of a kind of " insulation piercing connecting device that moves ", in this insulation piercing connecting device, lead inserts in the receiving system or is contained on the receiving system, and insulation piercing connecting device moves with respect to lead, so that realize contact.In this form of implementation, can form second connection that only is used for binding post, the conductor part that continues extension, for example switch contact of a command device are led in this connection.This connection is as described in the claim 12.Can control the clossing pressure that forms the effect of spring clamp according to the position of lead.This is that the profile of housing is realized by the profile of this conductor part and/or binding post or around also having.

Yet, can also realize that in this form of implementation, lead is contained in a guiding piece with the form of implementation of another kind of " fixedly insulation piercing connecting device ", for example in plastic components, and mobile in binding post.By this form of implementation, under certain conditions, when being connected with housing, the stress of insulation piercing connecting device is according to the shift motion of lead, thereby changes according to the external diameter of lead.In addition, in claim 13-16, also further described the favorable characteristics that insulation piercing connecting device helps the effect of elasticity clamp.

Describe the present invention in detail below in conjunction with the embodiment shown in the accompanying drawing, in the accompanying drawing:

Fig. 1 is a perspective view of insulation piercing connecting device of the present invention,

Fig. 2 is the fragmentary, perspective view from the cutting type clamp groove zone of the insulation piercing connecting device shown in Figure 1 shown in the other direction,

Fig. 3 sees sectional elevation figure in the past from middle minute fore-and-aft plane of the insulation piercing connecting device that intercepts along III Fig. 1-III line.

In order to contact with the end of not removing insulated hull of a unshowned electric lead, insulation piercing connecting device comprises two and comprises a cutting type clamp groove 5 between the two with the

relative contact leg

3,4 of its incline 1,2, and the profile of this clamp groove is roughly an inverted Y.At this, the inverted V-shaped top respect to one another

rib

7,8 that is of this Y shape constitutes a cutting area that penetrates wire insulation, limits between the two top ribs and inserts opening 6.And the leg rib that is substantially parallel to each other 9,10 of Y shape constitutes the wiring contact zone.The

top rib

7,8 that inserts opening 6 or Y shape vertically forms the such ripple of cutting edge of family expenses cutter along it.

The end face towards each other 11,12 of

top rib

7,8 tilts in such a way, that is, their inboard towards wire termination reception space 13 constitutes the

cutting edge

14,15 of an acute angle.Like this, each

cutting edge

14,15 constitutes a positive relief angle with the

end face

11 and 12 of adjacency, and the

end face

11 and 12 the outside 16 and 17 are from inserting opening 6 toward rollbacks.In the zone of

cutting edge

14,15,

contact leg

3 and 4 roughly is positioned at same plane.In it constitute to clamp the zone of leg rib of contact, the

contact leg

3 and 4 distolateral 18 and 19 the reception spaces 13 that contact towards wire termination.They and its

outer surface

20 and 21 constitute an outwards open angle 22.

Receive the side direction outer incline in space 13 by

contact leg

3 and 4 planes that comprise patchhole 6 that in the zone of

cutting edge

14 and 15, limit towards wire termination dorsad, with obtuse angle 23 of 24 formation, clamping contact zone.

At patchhole 6 and clamp the transition region 25 of the gap-like that a plane that is positioned at patchhole 6 is arranged between the contact zone 24.In transition region 25,

contact leg

3 and 4 respect to one another distolateral 11 and 12 or 18 and 19 roughly roll along the axis of its longitudinal extension around one make its transition limit that constitutes transition gap form one and receive the outer rib 26 in

space

13 and 27 knife edge shape changeover portion from the

inner cutter hole

14 and 15 that receives space 13 towards wire termination to the wire terminations dorsad that clamp contact zone 24.This changeover portion is seamless.Wire termination receives space 13 and has a contactor banking stop that is used for the uninsulated conductor end in its side that contacts

leg

3 and 4 dorsad.In the present embodiment, this contactor banking stop spare is made of two at least one that clamp in the

contact jaw

28 and 29, comprises one between these two the clamping contact jaws and clamps the contact groove.

This insulation piercing connecting device is made of the bimetallic section of a monomer.It is formed by a U-shaped matrix round wire termination reception space 13, and its

U-shaped leg

30,31 constitutes the sidewall of matrixes.An incline in two sidewalls each (being preceding incline under the situation shown in Fig. 1 to 3) is gone up and is formed contact leg 3 and 4.One of supporting respectively of another (back in the drawings) incline clamps contact jaw 28 or 29.The end bridge 32 of U-shaped bridge shape constitutes the U-shaped of matrix with U-shaped leg 30,31.The U-shaped of matrix also constitutes a framework that receives the space round wire termination by a free-ended enclosure portion 33 relative with U-shaped bridge 32 of U-shaped leg 30,31.This enclosure portion 33 is made of a deflectable recess 34 and a deflectable disc 35, and this deflectable disc 35 hingedly is engaged in this deflectable recess 34, makes U-shaped

leg

30 and 31 can do certain relative motion.This motility has further obtained the support of the Flexible Design of the U-shaped bridge 32 between two

U-shaped legs

30 and 31.

In order to remove insulated hull, move along the direction of arrow at patchhole 6 places the end that a lead of not removing insulated hull is obtained perpendicular to its longitudinal cutting.At this, wire head is stretched into receive in the space 13, and push up on the contactor banking stop, this contactor banking stop for example is two at least one that clamp in the contact jaw 28 and 29.Insert mouthful 6 o'clock (Fig. 2) at wire termination, wire termination is subjected to being roughly parallel to U-shaped leg power longitudinally, is pushed up to cutting type wiring gap 5 and thus to its inner moving.Because cutting edge 14 that form to insert mouthfuls 6

top rib

7,8 or be made of

top rib

7 and 8 and 15 inclination, the insulating barrier of lead not only is cut, and lead also further is extruded and goes to the direction that clamps wiring jaw 28 and 29.Further exert pressure,

contact leg

3 and 4 will flexibly be diverged each other, thereby and the lead of removing insulating barrier can be inserted in the clamping gap 5 that clamps contact zone 24, there, because the elasticity clamping force, and partly owing to contacting less otch on the

leg

3,4, lead is maintained reliably.Because removing when the lead of insulated hull inserts in the clamping gap 5 flexibly diverges

contact leg

3 and 4, also because the inclination of the transitional region 25 between clamping gap 5 and the patchhole 6 and the shape of the bending that the front was described, form one and gone to the thrust that clamps contact

jaw

28 and 29 directions, this thrust forms an extruding force on the uninsulated wire termination after blocking, wire termination is leaned for example clamping on

contact jaw

28 and 29 one or leaning on another contact, thereby constitute an additional contact point.

Claims

1. one kind is used to contact one and does not remove the insulation piercing connecting device of the electric lead end of insulating barrier, it has two contact legs (3,4), the incline (1 of these two contact legs, 2) toward each other, comprise a cutting type wiring gap (5) that is roughly Y shape between these two the contact legs, it is characterized in that: the top rib (7 that V-shapedly forms a patchhole (6) at described Y shape gap location toward each other and betwixt, 8) constitute a cutting area that is used to penetrate wire insulation, and Y shape gap location pin rib (9 parallel to each other basically, 10) constitute one and clamp contact zone (24), the top rib (7 of Y shape gap location, 8) longitudinally form ripple according to the type of the cutting edge of family expenses cutter.

2. insulation piercing connecting device as claimed in claim 1, it is characterized in that: the end face respect to one another (11,12) of top rib (7,8) tilts as follows, promptly, they constitute an acute angle cutting edge (14,15) in the inboard that receives space (13) towards wire termination, described end face (11,12) is adjacent with a positive relief angle and this cutting edge (14,15), and its outside (16,17) is thus from inserting opening (6) toward rollback.

3. insulation piercing connecting device as claimed in claim 2 is characterized in that: described contact leg (3,4) in the zone of cutting edge (14,15) roughly in a common plane.

4. as one or multinomial described insulation piercing connecting device among the claim 1-3, it is characterized in that: the pin rib (9,10) of contact leg (3,4) in clamping the contact zone located, contact end face (18,19) towards the reception space (13) of wire termination with it, and constitute an outwardly open angle (22) with its outer surface (20,21).

5. as each described insulation piercing connecting device among the claim 1-4, it is characterized in that: the plane of the insertion mouth (6) that is limited by the contact leg (3,4) in cutting edge (14,15) zone, with respect to clamp contact groove (24) with an obtuse angle (23) to deviating from a side that wire termination receives space (13) towards outer incline.

6. as one or multinomial described insulation piercing connecting device among the claim 1-5, it is characterized in that: between cutting edge district (14,15) and clamping contact zone (24) is the transition region (25) of a gap-like, and it is in the plane of inserting mouthful (6) basically.

7. insulation piercing connecting device as claimed in claim 6 is characterized in that: contact leg (3,4) end face (11,12 towards each other; 18,19) in transition region (25) around one roughly along the axis of its longitudinal extension from inserting mouthful (6) to clamping the bending of contact groove (5), its transition prismatic that constitutes transition gap becomes a knife edge shape changeover portion from the inner cutter hole (14,15) that receives space (13) towards wire termination to the outer rib (26,27) in the reception space of wire termination dorsad (13) that clamps contact zone (24).

8. insulation piercing connecting device as claimed in claim 7 is characterized in that: described changeover portion is seamless.

9. as each described insulation piercing connecting device among the claim 1-8, it is characterized in that: the reception space (13) of wire termination has a contactor banking stop that is used for uninsulated wire termination contacting leg (3, a 4) side dorsad.

10. as each described insulation piercing connecting device among the claim 1-9, it is characterized in that: it is by bimetallic, and particularly an independent bimetal piece constitutes.

11. insulation piercing connecting device as claimed in claim 10, it is made of a U-shaped matrix round wire termination reception space, its U-shaped leg (30,31) constitutes the sidewall of matrix, on an one incline, form contact leg (3,4), and its at least another incline supporting the backstop relative, contactor banking stop particularly with uninsulated end conductor.

12. insulation piercing connecting device as claimed in claim 11 is characterized in that: on U-shaped leg (30, the 31) incline relative with the contact leg, also form a contact jaw (28,29) betwixt, this jaw constitutes one and clamps the contact groove.

13. as claim 11 or 12 described insulation piercing connecting devices, it is characterized in that: the U-shaped of matrix further constitutes a framework that receives space (13) round wire termination by a free-ended enclosure portion relative with U-shaped bridge (32) of U-shaped leg (30,31).

14. insulation piercing connecting device as claimed in claim 13 is characterized in that: described enclosure portion can be pivotable relatively, so that make U-shaped leg (30,31) have mobility.

15. as each described insulation piercing connecting device in the claim 11 to 14, it is characterized in that: described U-shaped bridge (32) is an elastic construction.

16. as each described insulation piercing connecting device in the claim 1 to 15, it is characterized in that: it is made of a tabular elastic contact material.