DE1909970A1 - One piece fastener - Google Patents

Description

Priority; March 8, 1968; V.St.A .; Registration Fr. 711 694

The invention "relates to a one-piece Fastening element for insertion into the opening of a Switchboard"

A fastener to insert into the opening of a! Control panel consisting of a main part with two elastic deformable limbs originally so spaced from each other are arranged so that the main part can not extend into the opening of the control panel, but the one on top of the other are too movable to allow insertion of the main part through the opening in the control panel according to the invention in that an outer side of each The limb is serrated to get over the walls of the opening of the electrical panel to scrub while the main part is driven through the opening with the application of force.

Bayerisdie Vereinsbank Mündien 820993

BATH ORIGINAL

1S09970

The invention further relates to an arrangement having a one-piece fastening element according to the invention, wherein the fastener by insertion into the Opening a control panel is attached to this control panel.

Preferably, the main part of the one-piece fastening element according to the invention has a substantially perpendicular one to the limbs arranged side on which substantially in the plane of the limbs or parallel to the same Force can be applied to cause the main part to penetrate the opening in the control panel. Included can be a one-piece fastener according to the invention z. B. by means of a hammer in the opening of the control panel be struck, and the force thus applied causes that the resiliently deformable members move towards each other in order to penetrate si into the opening, the serrations during the penetration of the main part rub against the walls of the control panel opening. Once the one-piece Fastening element through the opening in the control panel penetrated, the limbs move as they elastic sir> d, away from each other and thus prevent "that the fastening element loosens again from the control panel.

A one-piece fastening element according to the invention can can be used to mechanically connect two parts. The fastener can be very beneficial to this be used, a wire conductor to a grounding board to ground, .z. B. on the chassis of an automobile. To this The purpose of both the fastener and the panel are metal, and it is an advantage of the invention that that The serrations provided on the links rub the walls of the control panel opening from oxides and other surface dirt cleans and thus contributes to good electrical contact between the fastening element and the panel.

909842/1145

AMP 24-29 ^ -. · ■ '- 3 -.

Embodiments of the invention are given below in Explained in connection with the drawings. Show it:

Figure 1 is a perspective view of an embodiment of a one-piece according to the invention Fastening element;

Figure 2 is a cross-sectional view of one end of the fastener of Fig. 1;

Figure 3 is a plan view from above of the fastening element of Fig. 1 |

Figure 4 is a sectional view of the fastening element of Fig. 1 during penetration into the opening of a control panel;

FIG. 5 is a schematic view of a section "along the line I-I of FIG. 4;

FIG. 6 is a sectional view through another embodiment a one-piece fastener;

Figure 7 is a perspective view of a third

An embodiment according to the invention of a one-piece Fastening element;

Figure 8 is a sectional view of the fastening element of Fig. 7 during penetration into the opening of a control panel;

FIG. 9 shows a schematic view of a section along line II-II necessary. 8th;

Figure 10 is a schematic view along the line. III-II of Fig. 8;

Figure 11 is a perspective view of another

Execution of an inventive. one piece Fastening element;

Figure 12 is a side view of the 3efesti .- ^ ungselementes from ^-1 Xg. 111 wherein the element is in a position to penetrate into the opening of the control panel;

909842/1 US

WY BAD ORIGINAL

AMP 2429

FIG. 15 a side view of the fastening element of Fig. 11 -during the binding in.die Opening a control panel ;.

FIG. 14 is a plan view from above of another; Embodiment of a one-piece fastening element according to the invention} - ^; Λ ',

Figure 15 is an end view of the fastener

of Fig. 14 viewed from the left; "- ■; ■>. ·

Figure 16 is an elevation of the fastener from _ "" " 14 seen from the right; . · "

FIG. 17 a sectional view along the line IV-IV of Fig. 16; and ; ■

FIG. 18 a sectional view of the fastening element of Fig. 14 during penetration into the Opening of a switchboard.

That in? 1 to 5 is shown a: shaped sheet metal die cut that is folded up to to form a Zv / ingenabsciinitt 9, one end of which ' a leg 8 extends. The die-cut is attached to the Swing part · -9 distant end of the leg 8 rolled up around a conical ^^ a ^ generally cylindrical slid Form the main part 3, which in the main right to the 'Ichenkel δ is bent. At the Verbinaungssxelle ü; it main part 3 and the leg 8 are approaches 7 -ebilaet, which see from the main part 3 in the plane of the jcheiikels 3 to extend to the feet »- ■

The edges of the 3chli "u3es of the main part 3 diverge from the. Cjchlitn outwards and form links ;." 1 and 2, saw teeth 4. ■■■■ . s-lriI ertlrr.?-einef3 -partes, the j-Lieüer 1 and 2 incised, and Tcrarün.ge 5 bind on the -zagungen ", opposite ^: send pages out of the :. Main part 3 out, presses * A Vorr.:; MiVoxm ^ 6 is. & VUS, the ^v Eauptt ^ eil. 3; out gefq _: rüit -, namely. -, -. T-uf äer-vl: eiiiher ₍ ^; .Seixe like äie Torsprün ^ © 5 "and closer to the.; Teroinaungsstslle des Kauple Ils 5 nit öea leg 8.

'9.098 4 2 / 11.45,

BATH ORIGINAL

AMP 2429 - 5 - ■

In use, the one-piece fastening element of FIGS. 1 ″ to 5 is driven with a hammer or in some other way into the opening 10 (FIG. 4) of a control panel 11, the control panel preferably being made of sheet metal and with the lugs 7 as receiving surfaces originally the links 1 and 2 are spaced apart (Fig. 3), but they move resiliently towards each other to allow the main part 3 to penetrate into the opening 10 and move away from each other again, once the main part 3 has penetrated the opening (Fig. 5). The fastening element is prevented by the wider end of the main part 3 and by the protrusion 6 from extending completely through the opening 10 and the projections 5 and the serrations 4 > in cooperation with the elasticity of the links 1 and 2, prevent the element from moving backwards out of the opening IQ the notches 4 come into contact with the walls forming the opening 10 and rub against them. If, as a pressed against the ferrule 9 conductors in the preferred example, the one-piece fastener is used to (not overall. 'Shows) to create earth with respect to ground panel 11, the scouring process cleans the contact zone and thus represents a good electrical conductivity between the conductor and the grounding panel. .

The one-piece fastening element shown in FIGS. 1 to 5 can be simplified in that the protrusion 6 omits, and in this case the approaches 7 not only serve as the driving force-absorbing surface, but also as the only or auxiliary sling to ensure a complete " To prevent the fastening element ″ from being pushed through the opening 10. The lugs 7 ′ can also be omitted be, whereby one is then to prevent the perfect

AMP 2429 - 6 -

The fastening element is penetrated through the opening the conical shape of the main part 3 leaves. The serrations 4 can be cut along the entire length of the links 1 and 2 be. The leg 8 and the clamp 9 can be omitted, but the fastening element can still be used as a "grounding terminal" by insert a conductor into the opening 10 before the one-piece Fastening element penetrates into this, in which case the Fastening element is used to "hold the conductor in the." Wedge the opening of the control panel. ■

The main part 3 of the one-piece fastener of Fig. 6 is by rolling up a die cut in the above described partially formed, however, in the the serrations 4 opposite side an edge opening 12 cut, and on each of the links 1 and 2 adjacent the 'junction of the main part 3 with the leg 8, a projection 13 is provided. The opening 12 and the neck

13 cooperate to allow movement of the one-piece fastener into or out of the opening 10 ' limit out su.

The one-piece fastener from the! '' Ig. . 7 to 10 is made of a sheet metal punched-formed as a leg 15 from which a wider portion 14 "is - · extends the end of the section away lying 14 of the · leg 15 can be used as clamp (not shown) ^■: are for connection to an electrical conductor. Two "■■ - ·. · -. spaced links 16 are obtained by bending the opposite tapered sides of section 14 perpendicular to the main part of the section " ^:

14 formed »Section 14 forms the main part of the ■■> · ' fastening element. The 'links 16 taper in the direction

_ BAD _ORIGINAL:; 90 9 842/1145

AMP 2429 ■ - 7 -

direction away from the section 14 and are V-shaped in section, the V-tips being directed towards one another, as can also be seen in FIG. Adjacent to the area where the Links 16 are bent from main body 14, a recess 18 is cut in the sides of each of links 16, and serrations 17 are in the opposite sides -the links 16 cut from the recess 18 in Towards the narrower end of the links.

In use, the one-piece fastener becomes the 7 to 10 driven by means of a hammer or in some other way into the opening 10 of a control panel, the Main part 14 used as the driving force receiving side will. The members 16 act as V-shaped springs, the one Release spring action and maintain outward pressure and in this way pinch the serrations 17 gen, to make contact with the walls forming the opening 10 and to rub against them, while the main part in penetrates the opening. The one-piece fastener is held in the opening by means of the recess 18, their protruding edges with opposite sides of the Control panel engage. The serrations 17 can, for. B. be designed as ratchet teeth to the Festhaltewir ^ kung of the one-piece fastening element in the opening increase, and are preventive ^ veiae. en opposite. 3 sides each of the links 16 staggered, [by a fixed Locking and a secure closure of the fastening element to provide it in openings shaped into, safein-different voids. ·

That in the. Fi. ^. 11 to 1; . dargesxeilte · "fastening element is a · -abwa ^ iiun ". of the ebe; i described element, at which the main part 14 from ier SOrsiung. a Bleqhstänzling

909842/1145

AMP 2429-8-;

is bent outwards. Furthermore is in the main part 14a an elongated opening 19 is cut, which acts as a weakened zone of the main part 14a. By striking of the one-piece fastener into the opening 10 of a panel, the main part 14a is flattened (see FIGS. 12 and 15), which causes the members 16 to spread outwardly in the panel opening, which in turn improves an improvement Locking of the one-piece fastener in the Opening up. Through the weakened zone in the main part 14a, the main part is essentially flattened after the one-piece fastener is inserted into the opening has penetrated.

The fastener shown in Figs. 14-18 is.

'- ■■■■ * "

from a punched sheet metal, formed by bending the opposite long sides of a rectangular main part 20 so that they are curved on each side of the main part 20 "■" ■■: - but are at a distance from this and so size-- .; 21, the links and the main part 20 forming an S in cross section (FIG. 17). The edges 22 of the links 21 are beveled and act as leading edges of the one-piece fastener to-.the arrangement .des. ile- ".mentes in a panel opening, and the other edge sides are bent over essentially perpendicular to the links 21 and form the driving force absorbing attachments 23. The ends of the attachments 23 are slightly towards the main part 20 bent for resilient attachment to a; board. one of the approaches 23, a ferrule may for pressing against ^a: electrical conductors have "■;.. . · \ ^Y ; ^;

The links 21 have serrations 24 which are arranged in a slight V / inlcel with respect to the longitudinal axis of the fastening element, in such a way that the element can be screwed into or out of an opening in a panel _:

909842 / 1.1. A S '

AMP 2429 - 9 -

can. The fastener of FIGS. 14 to 18 can be like the embodiments already described are used, however, it can also be used to connect two panels together, like Pig. 18 shows. The fastener is driven with the application of force through openings 28 and 29 in panels 26 and 27, the serrations 24 engage in the opening 28 in the panel 26 forming walls and the ends of the lugs 23 to the Firmly lay out table 27. In this way the panels are connected and the resilient engagement of the lugs 23 on the panel 27 increases the resistance of panels to vibrations or vibration. The one-piece fastener can easily screwed into or out of the panels by simply inserting one into the recess 25 Screwdriver blade turned

The embodiments of a one-piece according to the invention Fasteners, which have been described above, can easily be done by unskilled workers and without special tools, to be used. The serrations of the fastener scrub or grind over the walls of the opening in the control panel and clean them in this way, which is a special part of the gate when electrical contact is required will. The fastening element is preferably made of sheet metal Tables are manufactured and can be mass-produced in consecutive Forming steps by automatic machines getting produced. The metal is sufficiently hard to give the links of the fastener the required Degree of elastic deformability, and yet is pliable enough to allow an electrical conductor to be attached by cold hammering, pressing, or otherwise can be attached to the fastener.

Patent claims: 909842/1145

Claims (1)

2429 -K- '■■■ .. ■ -. · - P at e η ta η s ρ rü che Fastening element for insertion; into the opening of a table, consisting of a main part with ^ y / ei "elastic" - deformable members, which are originally so spaced from each other that the main part cannot penetrate the opening of the board, but which can be moved towards each other in order to allow penetration of the main part into the mentioned panel opening, since you rch '■ s eke η ή -. ".." -_ ζ calibrate η et, ^ that an outside of each link (l, 2; 16 and 21) has serrations (4; 17 and 24) which _; chafe against the openings forming the opening (10) in the panel, when the main part (3) penetrates it by applying a force of 1%. 2. Fastening element according to claim 1, d ad ur ch _: ge ke η η ζ ei ch η et / that the main part: ("3"). a shoulder (7; 14, 14a and 23) to which force can be applied substantially in the plane or substantially parallel to the plane of the links (1, 2; 16 and 21). ... -; ^: '.'".;. ■ -." 3. Fastening element according to claim 2, d a d u r c-h g e k e η η ζ e i c h η e t,: that a main part (.14, 14a.) is arranged so that one end of each link (1, 2 and 16) connects to one another, and that the main part preferably has a weakened zone (19) for receiving force essentially applied in the plane of the limbs * 4 «. Fastening element according to claim 2, characterized in that lugs (T and 23) sl'ph substantially perpendicular to one end of the main part (3); and extending therefrom to receive the force applied substantially parallel to the plane of the members (1, 2 and 21). . ; _: 909842/1 US AMP 2429 - ^ - · - 5i fastening element according to one of claims 1 "to 4, through this. marked that the Fastening element has stop means to the main part (3) against movement into the opening (10) of the panel or to keep out of this. 6. Fastening element according to claim 5, characterized g e k e η η z. e i c h, η e t-, 'that the sling means from Projections (5, 6 and 12, 13) exist in the longitudinal direction of the main part (3) are arranged at a distance from one another, or that a recess (18) is formed in opposite sides of the members (1, 2 and 16), which on opposite The sides of the panel (ll). · 7. Fastening element according to one of claims 1 to 6, ' thereby g e k e η η ζ e i c h η e t that the Main part (3) is a conical slotted cylinder and the links (1, 2} on diverging opposite edges of the slot are formed. 8. Fastening element according to one of claims 1 to 6, characterized in that the members (16) are V-shaped in section and are arranged so that the V-tips are directed towards one another (Pig. 10). 9. Fastening element according to claim 7 or 8, characterized g e k e η η ζ e ic h η e t that the serrations (4 and 17 on opposite sides of the links (1, 2 and 16) staggered-t are arranged. 10. Fastening element according to one of claims 1 to 4, d a d u r c h e k e η η ζ e i e h net that the Main part (.20) is shaped like a web and the links 909842 / 11A5 190997Ö (21) extend in a curved manner from opposite sides of the web (FIG. 17). Ho fastening element according to claim 10, d ad ur c. h g e k Enna et calibration η that "the serrations (24) are arranged on the limbs (21) at an angle to the plane of the link _/..::. 12-0 Fastening element according to one of claims 1 to 11, characterized Eke q η η ζ 1 e ch η et, 'that the element is produced from a sheet metal punched-through successive forming steps, 13. Fastening element according to claim 12, characterized in that g e k e: -n.-n ζ e i c h η et that the element is a ferrule (9) for an electrical conductor has » 14. Arrangement with a set in an opening of a panel. stuck fastener as you rc h "". ■ gek e η η ζ ei ch η et, d'ass the arrangement has a 'fastening element according to one of claims 1 to 13 , which is inserted into an opening (10) in a panel (ll), 90 9 842 / 1U5