CN1303530A

CN1303530A - Cutting edge

Info

Publication number: CN1303530A
Application number: CN99806868A
Authority: CN
Inventors: 彼得·阿德尔芬格; 克劳斯·布希; 迈克尔·吉赛尔曼; 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; 雷纳·埃德洛思; 伯恩德·赫思特; 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: 2001-07-11
Anticipated expiration: 2019-05-31
Also published as: WO1999065113A1; DE59903658D1; CN1140012C; JP4261771B2; EP1086512A1; JP2002518798A; EP1086512B1

Abstract

In order to obtain reliable contact of a non-striped electrical conductor (2) in a V-shaped contact area (6) throughout a large cross-sectional area, e.g. 0.5 to 2.5 mm<2>, using the cutting edges (10,11) of two clamp arms facing each other in a screwless insulation piercing connecting device, the cutting flanks (11,12) of the cutting edges (10,11) have an undulated shape. The width (b,b',b'') of the contact surfaces formed by the cutting edges (10,11) alternately increase and decrease in the direction of tape ring (14) of the contact area (6).

Description

Cutting edge

The present invention relates to a kind of cutting edge that does not remove the electric lead of insulated hull of contacting in the V-arrangement contact zone that the blade that is faced one another by two gripper edges constitutes that is used for.The invention still further relates to a kind of being used in addition inserts manually operated tools in the cutting edge with lead.

In the cutting edge of the usefulness sheet contact material system known by DE 4403278A1, between two gripper edges, constitute a clamping slot, the blade that gripper edge faces one another extends parallel to each other.Though based on flexible contact material, two leads with different-diameter can be clamped in the contact zone for dual contacting, but owing to constitute the geometry of the clamping slot of contact zone, be conditional for remaining the cross section size of lead of contacting.

In addition, by the known a kind of cutting edge that the V-arrangement contact zone is arranged of EP 0274948A1.The blade of the cutting edge of contact zone by being designed to circular arc and rigidity constitutes, and cutting edge itself does not play clamping action.When lead was inserted into by the shrinkage direction pressurization along the V-arrangement contact zone, the blade that cutting edge faces one another penetrated the wire insulation skin until the lead heart yearn.Lead being fixedly clamped in the contact zone carried out by means of lever arm.In this known cutting edge, also be conditional for remaining the cross section size of lead of contacting with different-diameter.

The purpose of this invention is to provide a kind of cutting edge, compare with known cutting edge, by this cutting edge, the contacting and the cross section that is fixedly clamped are bigger reliably, that is the cross section size preferably 0.5 to 2.5mm ²Between electric lead.Should provide a kind of being specially adapted to that lead is inserted manually operated tools in the cutting edge in addition.

Purpose of the present invention reaches by the described feature of claim 1.Therefore one of at least one gripper edge or each blade sides are designed to corrugated in such a way, that is, make the interface width that is made of blade alternately increase and reduce along the direction of dwindling of V-arrangement contact zone.

By this ripple moulding of gripper edge blade, help to pass the incision and the cutting process of wire insulation.In addition, dwindle direction along the V-arrangement contact zone, blade has the width that alternately increases and reduce, and compares with the blade-like design that blade is continuous, makes that the pinch zones adjacent with cutting area has bigger contact-making surface.

By a favourable design, gripper edge is not to be arranged as extension parallel to each other, but inside deflection at an angle.Do like this when extracting the extraction power of the contrary gripper edge skew direction of direction appearance out at lead upper edge lead, can impel automatic increase clamping force.Here angle of deviation is 0 °＜α≤10 ° more worthily.This skew angle=5 ° preferably.

By another kind of or as the design of modification, gripper edge and blade thereof are clamping and contact zone layout each other with offsetting.Reach thus and make cutting edge at the lead that is adapted to different-diameter and cross section aspect clamping and the contact action especially reliably.Here, the blade sides of each gripper edge preferably becomes corrugated with respect to an axis of symmetry minute surface mapping ground that extends along the edge of a knife of blade.So the blade along corresponding gripper edge obtains sharp keen especially cutting area and bigger contact-making surface.

In addition, by a kind of appropriate design,, be designed to towards blade and thereby tapered towards the direction of the edge of a knife along the blade sides of blade by the contact-making surface pinch zones that constitute and always adjacent of change width with a cutting area.Blade sides adopts this wedge structure, can obtain additional dissection for the wire insulation that cuts reliably in contact and pinch zones in relevant pinch zones.

Gripper edge is the knuckle end of arm of the U-shaped contact chip of contact sheet more in form, and contact sheet more also is the contact element in the switching device.Angle β＞90 of the arm of gripper edge and contact sheet ° in this case, for example β=95 °.

The contact matching part that extends with respect to gripper edge contact zone setting spaced apart, that be in substantially parallel relationship to knuckle at U-shaped contact chip top has constituted in the trigonum that is used to be clamped on the V-arrangement contact zone also the additional contact-making surface of the lead end face contacting of contacting there.By based on the transition region between cutting and pinch zones along blade longitudinally wedge structure make traverse shaft to passing, produced conductor wire end on the contact matching part for the required thrust of contacting.If contact or switch plate are made with bimetallic, can also increase this contact force.Therefore when heating because bimetallic effect obtains bigger contact force.In addition, whole contact chip also can be designed to have the box-like of the sidewall made from bimetallic.Can constitute additional contacting position or contacting face worthily so be in the end face of relative position with cutting-pinch zones.

For the clamping force adjustment of different conductor diameter or cross section, undertaken by the position of lead in the contact zone, just adjust by the position in the trigonum of lead between the gripper edge of mutual forming V-shape layout.The guiding of lead in inserting the V-arrangement contact zone time realizes that by an additional manually operated tools it is laid the conductor wire end of wanting contacting and makes it stable.

Stable when inserting cutting edge for the lead that makes insulated hull, suitable especially is that a through hole that is used to lay lead is arranged at this manually operated tools bottom, is formed with a supporting arm of making crimping substantially at the through hole downside L shapedly.Supporting arm is provided with a groove mutually opposed to each other therewith, and when lead inserted, the gripper edge of cutting edge slipped in this groove.Through hole extends in the stable region, and the blocking arm of wire termination is connected with the stable region.

The advantage that adopts the present invention to obtain mainly is because blade sides is corrugated moulding along the blade of the gripper edge of the mutual V-shaped layout of cutting edge, can with the thickness of insulating layer of conductor and with insulating material irrespectively, make the cross section size be about 0.5 to 2.5mm ²Electric lead realize not going the contacting of insulated hull and no screw.Can also clamp solid thin core or multicore cable reliably by contacting in this case.Operation when lead is inserted the contact zone can realize by means of simple tools.

Further specify embodiments of the invention by means of accompanying drawing below, in the accompanying drawing:

Fig. 1 is the three-dimensional view with cutting edge of V-arrangement contact zone and corrugated blade sides;

Fig. 2 illustrate cutting edge shown in Figure 1 have inserted and end face by the lead of contacting additionally;

Fig. 3 illustrates the form of implementation that cutting edge has the gripper edge of mutual offsetting;

Fig. 4 illustrates the another kind of form of implementation that cutting edge has sharper keen gripper edge;

Fig. 5 is the vertical view that the gripper edge deflection setting of cutting edge shown in Figure 3 is shown;

Fig. 6 illustrates the box-like cutting edge of being made by bimetallic; And

Fig. 7 illustrates and is used for lead is inserted manually operated tools in the cutting edge have the contact matching part.

In correspondence with each other part adopts identical Reference numeral in all accompanying drawings.

The lead 2 that is used for shown in Fig. 1 and 2 does not go the cutting edge of insulated hull ground contacting to be made of a contact plate 3 worthily, and it is the contact element of (not representing among the figure) switching device simultaneously.Contact sheet or contact chip 3 are designed to U-shaped.End at arm 3a, the 3b of U-shaped is angled from gripper edge 4 and 5.Outside V-arrangement, from the summit of V-arrangement, the extension of

gripper edge

4,5 toward each other and constitute gap 3d, so

gripper edge

4,5 all has elastic reaction on the

whole.Gripper edge

4,5 intersects an angle of inclination beta different with the right angle with the arm 3a or the 3b of contact chip 3,90 °＜β＜100 ° here, preferably β=95 °.

Gripper edge

4 and 5 constitutes cutting and pinch zones, and thereby constitutes the contact zone 6 of cutting edge 1.With contact zone 6 mutually opposed to each other, in the outside of top 3C, have a contact tongue 7 to be formed on the contact chip 3, have the contact 8 of contact element on this contact tongue.In the inboard of top 3C, on contact chip 3, be formed with a contact matching part 9, it is transverse to the plane that is strutted by

arm

3a, 3b and be in substantially parallel relationship to

gripper edge

4,5 orientations.This contact matching part 9 has one and imports inclined-plane 9a and a contacting partition 9b who extends along the direction of

gripper edge

4,5.

Gripper edge

4,5 is at its distolateral blade and clamping

rib

10 or 11 of being designed to that faces one another in contact zone 6, they are exactly the contact-making surface between lead 2 and contact chip 3, be the contact-making surface of cutting edge 1 therefore also, and their

blade sides

12 and 13 is made corrugated along the direction 14 of dwindling of V-arrangement or triangle contact zone 6.Corresponding ripple is with respect to separately

blade

10,11 minute surfaces symmetry and meanwhile be designed to, and makes that 6 the direction 14 of dwindling alternately increases and reduces along the contact zone for width b, the b ' of the contact-making surface that is made of blade 10,11.

Blade

10,11 constitutes cutting area 15 along smaller width b in this case, a contact zone 17 that connects

blade

10,11 links to each other with this cutting area 15 by a transition region 16, and contact zone 17 has the bigger identical width b ' of the width B with gripper edge 4,5.Along

blade

10,11, continue on contact zone 17, to connect a cutting area 15 again with less width b via a transition region 16 towards dwindling direction 14.For example by the cut of

gripper edge

4 and 5, for example the drawing by contact chip material in cutting area 15 realizes the bellows-shaped of

blade sides

12,13.

The contact zone b that Fig. 2 represents to be clamped between

gripper edge

4 and 5 is interior also by the lead 2 of

blade

10 and 11 contactings, and the end face of this lead is resisted against on the contact matching part 9.Therefore, contact matching part 9 constitutes additional contact-making surface or contact site 18.Steeply inclined moulding by transition region 16 sides between cutting area 15 and pinch zones 17, therefore and the effect of the wedge that obtains make lead 2 towards the axis of orientation of additional contact site 18 to passing, thereby produce a thrust, it is pressed against on the contact matching part 9 wire termination 19 of lead 2.

In cutting edge shown in Figure 31 (cutting edge does not have contact matching part 9 in this embodiment),

gripper edge

4,5 vertically has an offsetting 20 ground orientations mutually along lead.Since this offsetting 20 of gripper edge, and then their

blade

10 and 11 is also offsetted mutually, for different diameters of wire or cross section adaptive capacity is especially flexibly just arranged like this.

Figure 4 and 5 illustrate another kind of alternative design of

gripper edge

4 and 5 corrugated blade sides 12,13.Here, the width b of pinch zones 17 " compares smaller with the embodiment shown in Fig. 1 and 2.This point realizes that by the blade-like design of

blade sides

12,13 they are designed to wedge shape towards the edge of a knife direction of

blade

10 or 11 for this reason.Obtain the milder transition region 16 in side thus at cutting area 15 places.This design has strengthened the contrary axially movable effect of direction 21 (Fig. 5) of extracting out that lead obtains by transition region 16 when inserting lead 2 in the contact zone 6.

To as shown in the vertical view of cutting edge 1 shown in Figure 4,

gripper edge

4,5 and their

blade

10 or 11 are towards the direction of U-shaped contact chip 3 top 3C and thereby inwardly by a skew angle deflection as Fig. 5.Therefore, along the extraction direction 21 of lead,

blade

10,11 and

gripper edge

4 and 5 form a kind of trend of wedge shape, so the lead 2 in being clamped in contact zone 6 causes the automatic increase of clamping force when being pulled outwardly.This skew angle is preferably greater than 0 ° and less than 10 °, for example α=5 °.If contact chip 3 usefulness bimetallic manufacturings then can further strengthen this effect.

Fig. 6 represents a kind of cutting edge 1 another kind of alternative form of implementation made from bimetallic.Contact chip 3 ' be designed to box-like wherein, corresponding to the end face of contact zone 6 in order to constitute still fluting continuously of gripper edge 4,5.Therefore

gripper edge

4,5 still be designed to flexible, and contact chip 3 ' itself be the comparison rigidity on the whole.Box-like contact chip 3 ' be configured for the contact-making surface or the contact site 18 of wire termination 19 with contact zone 6 opposed distolateral 22.

Fig. 7 represents to be used for lead 2 is inserted the manually operated tools 23 of cutting edge 1.The through hole 24 of the lead 2 of packing into is arranged at operation tool 23 bottoms, is formed with substantially L shaped on the through hole downside and is shaped on the supporting arm 26 of the crimping 25 that is used to lay lead 2.This manually operated tools 23 is being provided with groove 27 with supporting arm 26 opposed sides, and

gripper edge

4,5 slips in the groove 27 when inserting lead 2.Along the bearing of trend of through hole 24, the stable region 28 of end conductor 19 groove 27 therewith links to each other.Establishing a blocking arm 30 with manually operated tools 23 clampings and contacting side 29 opposed sides, end conductor 19 is resisted against on its inner surface 31.

When being placed on lead 2 on the cutting edge 1 by means of manually operated tools 26, on the one hand with lead 2 fixed-site be pressed into V-arrangement contact zone b,

gripper edge

4 and 5

blade

10,11 penetrate the insulating barrier 32 of lead 2 until the lead heart 33 in this case.Therefore lead 2 be clamped in the contact zone 6 and with contact chip 3 contactings.The end face of wire termination 19 is directed on contact matching part 18 and contacting additionally there on the other hand.The end face of wire termination 19 is led to contact site 9b along importing inclined-plane 9a always in this case.

Claims

1. cutting edge, be used in the V-arrangement contact zone (6) that the blade (10,11) that is faced one another by two gripper edges (4,5) constitutes, one of contacting does not remove the electric lead (2) of insulated hull, it is characterized in that having at least a blade sides (12,13) to be corrugated, wherein, (direction (14) of dwindling of (6) alternately increases and reduces the interface width that is made of blade (10,11) along the contact zone for b, b ', b ").

2. according to the described cutting edge of claim 1, it is characterized in that: the contrary lead (2) of gripper edge (4,5) is extracted direction (21) out by angle of deviation (α) deflection.

3. according to the described cutting edge of claim 2, it is characterized by, described skew angle is preferably 5 ° between 0 ° and 10 °.

4. according to each described cutting edge in the claim 1 to 3, it is characterized in that: blade (10,11) has offsetting mutually and arranges (20) in contact zone (6).

5. according to each described cutting edge in the claim 1 to 4, it is characterized in that: blade sides (12,13) becomes the corrugated of minute surface symmetry with respect to blade (10,11) separately.

6. according to each described cutting edge in the claim 1 to 5, it is characterized in that: the direction of blade sides (12,13) court blade (10,11) separately is designed to taper.

7. according to each described cutting edge in the claim 1 to 6, it is characterized in that: gripper edge (4,5) is the knuckle end of the arm (3a, 3b) of U-shaped contact chip (3).

8. according to the described cutting edge of claim 7, it is characterized in that: angle β＞90 between the arm (3a, 3b) of gripper edge (4,5) and contact chip (3) °.

9. according to each described cutting edge in the claim 1 to 8, it is characterized in that one is arranged and facing the contacting face (18) of contact zone with respect to contact zone (6) partition distance, it is used for the end face contacting of conductor (2).

10. according to each described cutting edge in the claim 1 to 9, it is characterized in that: contact zone (6) are located at box-like contact chip (3 ') distolateral of bimetallic system.

11. one kind is used for making lead (2) the stable manually operated tools when inserting according to the described cutting edge of one of claim 1 to 10 (1) do not remove insulated hull, it has a bottom through-hole (24) that lead (2) is installed, and is formed with a supporting arm (26) that is shaped on crimping (25) substantially at its downside L shapedly; This manually operated tools also has a groove (27), and the gripper edge of cutting edge (1) (4,5) slips in the groove (27) when inserting lead (2); And, also have one along stable region (28) that the continuity direction of through hole (24) is connected with groove (27) and with it standoff distance be used for the blocking arm (30) of wire termination (19).