Binding clip
The present invention relates to a kind of binding clip, be used for that some do not remove the lead of insulated hull by means of the clamping element contacting, the clamped screw of this clamping element is fixing movably, and be bearing on the lead on the contact and at the opposite side of pinching screw at a side bearing of pinching screw, wherein, clamping element and contact have some cutting elements in pinch zones.
By DE-AS 2229835 known these type of binding clips.It is connected electric lead by means of pinching screw with instrument.For this reason, lead inserts between the clamping element (clamp clip) and contact of binding clip, and by means of pinching screw clamping element is moved towards contact, thereby does not remove insulated hull ground contacting lead.In this process, be located on the clamping element and contact on the insulating barrier of cutting element incision lead, until with lead heart yearn contacting.Therefore, in fixing cord, realize lead and contact current lead-through by this binding clip.
Known binding clip only is given for the contacting of a lead, can use the different lead of cross section here.For this reason, clamping element promotes from contact more or less by means of pinching screw.If answer the different lead of many cross sections of contacting, then must adopt an independent binding clip to each root lead.
The binding clip that the purpose of this invention is to provide the described type of a kind of preface, by the present invention can be in the size of binding clip as far as possible little in, clamp position two right leads of any cross section of contacting at least reliably at one.
Purpose of the present invention reaches by the described feature of claim 1.For this reason, contact preferably is designed in pinch zones transverse to the direction of insertion of lead configuration obliquely.
In addition, preferably also clamping element is designed to appropriate smaller gradient configuration obliquely.The inclination angle of clamping element is about 25 ° in this case, and the inclination angle of contact preferably is about 30 °.Therefore can realize dual or multiple contacting, two of this moments or many parallel side by side and the lead that varying cross-section is arranged by contacting and clamping reliably simultaneously, can not occur in and clamp the position and cut off the wherein situation of a lead when closed.
The contact that is formed by the contact sheet shaping also is the contact element of switching device worthily simultaneously, wherein only is to connect or the pinch zones inclined configuration.Can for example be 2.5mm with two cross sections thus
2The lead that does not remove insulated hull be clamped in the width of same pinch zones or buried region and contacting, can only accomplish this point to the lead that removes insulated hull up to now.Its result means the remarkable space of having saved.
By contact can be shaped the worthily cutting teeth that is used for contacting (and thereby be used for electric current is transferred to contact from lead) of two row's differing heights.The differing heights of cutting teeth guarantees both can be with little cross section, for example 0.5mm
2, also can be with bigger cross section, for example 2.5mm
2, contacting reliably one by one or in combination.
For reliably preventing to cut off the lead that cross section to be connected may be different, the side that contact faces pinch zones at pinching screw worthily is useful on the rib or the side-strut of clamping element.When adopting contact sheet as contact, rib or side-strut preferably from then on contact sheet be shaped out.In addition, for identical purpose, cutting teeth is designed to not have continuously to extend along the width of contact, but be interrupted.Along the direction of insertion of one or every lead,, be to stamp out lead from contact to insert the inclined-plane worthily in the front of contact cutting element.
Clamping element is by means of the be directed downwards motion of pinching screw towards contact.Therefore the lead that has inserted in the binding clip in advance is pressed in the cutting teeth, and insulating barrier is cut open and electrically contacts with contact formation in this case.For this reason, pinching screw passes a through hole in clamping element, and the diameter of through hole is chosen as, and when pinching screw tightened and unclamp, clamping element can also thereby along the lead axis direction move along the lead direction of insertion.Preferably annular projection set on the pinching screw and in the clamping element through hole area corresponding punching press projection, can when opening binding clip, promote clamping element automatically.Therefore can simply and reliably throw off contact and connect, just clamping element upwards can be removed from contact as long as correspondingly rotate pinching screw.
By special appropriate design, the cutting element of clamping element is mounted to can be around an axis swing along the extension of lead direction of insertion.The cutting element of clamping element itself also is made up of the blade of two differing heights.Therefore guarantee not only have little cross section but also the equal contacting reliably of lead that bigger cross section is arranged.In order to guarantee on the one hand lead contacting and fixing reliably reliably in binding clip in this case, and prevent wherein lead of cut-out on the other hand reliably, the blade of clamping element is arranged with respect to the cutting teeth of contact with staggering.In addition, the cutting element rotatably support of clamping element can make it special and match with the shape of contact inclined configuration rightly and match with the different-diameter of clamped lead.In addition, in the contact backstop of pinching screw, also additionally prevent to cut off any clamped lead back to the set sensing contact direction of pinch zones one side.
The advantage that adopts the present invention to obtain mainly is, in the binding clip that comprises clamping element and contact that available screw screws, constitute a kind of pinch zones of approximate taper by contact, can in this zone, clamp reliably and many different-diameters of contacting lead arranged side by side mutually by means of inclined configuration.Therefore the mode with simple and saving space can realize dual or multiple contacting by single binding clip.In this case can be by a pinching screw, make cross section scope that at least two its lead hearts are designed to solid, filament or multiply silk from 0.5mm at least
2To 2.5mm
2Electric lead, with the thickness of wire insulation and insulating material irrespectively, in the single clamping position of minimum dimension is arranged, do not go the situation lower contact of insulated hull to connect.When clamping the position closure, prevent to cut off one or every lead reliably.
Further specify embodiments of the invention by accompanying drawing below, in the accompanying drawing:
Fig. 1 is the perspective view that is used for the binding clip of multiple conducting wires at switching device contact element place;
Fig. 2 is the front view of binding clip shown in Figure 1;
Fig. 3 for cut open along line of cut III-III among Fig. 2 the sectional arrangement drawing of binding clip;
Fig. 4 is the perspective view of binding clip that has the lead of the different-diameter that two velamens sandwich; And
Fig. 5 for cut along line of cut V-V among Fig. 4 the sectional arrangement drawing of binding clip.
In correspondence with each other parts adopt identical Reference numeral in all accompanying drawings.
The binding clip of representing in Fig. 1 to Fig. 31 comprises that one in form is located at the clamping element that is designed to clamp clip or top board 3 and a pinching screw 4 above it movably for the fixed contact therefor 2 of contact sheet and one.The nail bar of pinching screw 4 partly passes through hole or the port 5 in the clamping element 3, and the end of thread is spun in the screwed hole 6 of contact 2 (Fig. 3).
Clamping element 3 is designed to L shaped, and by means of it as the supporting arm 7 at pinching screw 4 in the fulcrum 9 of a side bearing on contact 2 of pinch zones 8.Clamping element 3 is designed in pinch zones 8 by inclined angle alpha (Fig. 2) configuration obliquely.In this pinch zones 8, near the free end 10 of clamping element 3, establish a cutting element 12, it has two along tandem blade 12a of lead direction of insertion 11 (referring to Fig. 1 and Fig. 4) and 12b.Cutting element 12 can be parallel to the axis 13 that the lead axis extends ' be contained in rotationally on the clamping element 3 around one by a bearing pin 13.In addition, cutting element 12 and bearing pin 13 are configured as a part worthily, for example as sintered part, thereby are designed to monomer or integral type.Along that blade 12b of direction of insertion 11 the bigger height h (referring to Fig. 3) of blade 12a than is in front arranged here, in the back.
The side that contact 2 faces pinch zones 8 at pinching screw 4 has one to be shaped out and the direction of pointing to clamping element 3 is used for the backstop 14 of clamping element 3 from contact sheet.In addition, contact 2 has a stamped bumps 15 of extending at least near pinch zones 8 whole width transverse to direction of insertion 11, and it is as the insertion servicing unit of one or every lead.In addition, contact 2 is provided with a cutting element of being made up of two row's cutting teeths 16,17 in pinch zones 8.Here, cutting teeth 16,17 is staggeredly arranged with respect to blade 12a, the 12b of clamping element 2 cutting elements 12.The front row of contact 2 cutting elements comprises two cutting teeths 16, and then row has three cutting teeths 17 (Fig. 1).The height of cutting teeth 17 that is positioned at the back along direction of insertion 11 is again greater than in front cutting teeth 16.Be shaped on the insertion inclined-plane on the cutting teeth 16 in front, the inclined-plane of reverse extension is then arranged on the cutting teeth 17 of back.
Contact 2 is designed to the inclination angle with respect to horizontally extending pinch zones in pinch zones 8 be β crustal inclination configuration.Here, this angle of inclination beta is worthily greater than the inclined angle alpha of clamping element 3.These inclinations angle are α=(25 ± 5) ° and β=(35 ± 5) °, preferably α=25 ° and β=30 °.Therefore by this inclined configuration of contact 2, allow in clamping position single, that size is especially little, to realize the multiple contacting (referring to Figure 4 and 5) of multiple conducting wires transverse to direction of insertion 11.
By contact 2 being in tilted layout in pinch zones 8 especially, allow for example have different-diameter d with two in simple especially mode
1And d
2Lead 18 and 19 be contained in side by side in the pinch zones 8, and contacting ground clamps there, as shown in Figure 4.Here, straight line d
1The cross section of lead 18 for example be 2.5mm
2, and diameter d
2The cross section of lead 19 for example be 0.5mm
2Fig. 5 has represented the clamped condition of lead 18,19 in the vertical section of lead 18.In this case, one or two cutting teeth 17 of the blade 12b of clamping element 3 and contact 2 penetrates the lead heart 21 of insulating barrier 20 until lead 18,19 fully at least.Therefore, when fixing the clamped lead 18,19 that each root do not remove insulated hull reliably, for the current lead-through between every lead 18,19 and contact 2 forms reliable contacting.
In order to clamp and contacting, for example by dextrorotation pinching screw 4, binding clip 1 is placed in the position shown in the Figure 4 and 5 from the position shown in Fig. 1 to 3.Clamping element 3 is bearing on the fulcrum 9 of contact 2 by its supporting arm 7, and is bearing on the other hand on the lead 18,19 on the one hand in this case, and movable blade 12a, 12b cut the insulating barrier 20 of wearing lead 18,19.Meanwhile, the cutting teeth 16,17 of contact 2 penetrates insulation equally and leads 20 and be pressed on the lead heart 21 of every lead 18,19.
Backstop 14 prevents that reliably lead 18,19 is cut off.In addition also the cutting teeth in a row 16,17 of blade 12a, 12b by clamping element 3 and contact 2 is arranged with staggering and is guaranteed this point.This layout also guarantees lead 18,19 is fixed in the binding clip 1 reliably with staggering.In addition, blade 12a, 12b or cutting teeth 16,17 different height h, h ' assurances have all contactings reliably of lead 18,19 little and that have big cross section.
By cutting element 12 rotatably supports of clamping element 2, allow not only with adaptive transverse to the contact 2 of direction of insertion 11 diagonally extendings in pinch zones 8 in particularly advantageous mode, and diameter d that can be different with the lead 18,19 of clamping arranged side by side
1, d
2Match.In order to clamp reliably and for contacting reliably, pinching screw 4 is tightened for penetrating insulating barrier 20 required given moments of torsion with one worthily.
The inside span width of through hole 5 is determined its size in such a way with respect to the nail bar thickness of pinching screw 4, that is, might keep clamping element 3 to move along direction of insertion 11 at least when pinching screw 4 is tightened and when unclamping.Be engaged with in through hole 4 zones one of the annular projection on the shank of screw 22 and clamping element 3 work correspondence dash part projection 23, can when pinching screw 4 unclamps, promote clamping element 3 automatically.In this case, for example when pinching screw 4 was left-handed, clamping element 3 moved upward, and connected thereby simply and reliably reach the contact of disengagement in pinch zones 8.
The shell that only schematically illustrates among Fig. 1 is the part of switching device.Shell is designed to worthily and can clamps contact 2 with simple and time saving mode.Meanwhile, has minor diameter d
2Lead 18 and thereby cross section≤0.5mm
2Lead 19 and have than major diameter and cross section 〉=2.5mm
2Lead 18 also all should be in each position contacting reliably.In Fig. 1,3,4 and 5, can see the switch contact 25 of contact 2.