DE2951395A1 - FASTENING FITTING FOR WALL PLANTS - Google Patents

Description

l / p / 1520

Armaturenfabrik Hermann Voss GmbH & Co., 5272 Wipperfürth

Fastening fitting for wall penetrations

The invention relates to a fastening fitting for wall bushings, in particular for connecting two hose lines through an opening in a wall, for example in a motor vehicle sheet.

The automotive industry strives to achieve the Brake lines previously made of metal or the like are being replaced more and more by those made of plastic to replace. When passing the metal lines through openings in a wall or in a bulkhead, for example of a truck, a mounting fitting is used, which both the passage of the line as should also ensure attachment to the wall. Such so-called bulkhead connections are in the Usually arranged and caused by a complex screw fastening on the wall during assembly no major difficulties. Only the intended switch to plastic parts that are generally lighter than metal parts, which means that screw connections no longer meet the requirements in with regard to the required strengths are sufficient. When tightening the plastic nut used for screwing

Schloßbleiche 20 P.O. Box 130219 D-5600 Wuppertal 1 Tetefon (0202) 445096/451226 Telex: 8591273 soza

Palentanwalt Dr-Ing Diu-Ing A So " Patent attorney Dipl-Ing Chr. Zapf

130027/0237

DR SOLF & ZAPF

Approved representatives at the European Patent Office
Professional Representatives before the Eirrppan ° 3ient OfVf

can tear the plastic screw thread; also can an exact tightening force can not be guaranteed, which in turn has the consequence that the screw connection no exact preload can be specified. In addition, pre-tensioning occurs in the long term due to the time flow of the Plastic are degraded, so that the bulkhead fastening loosens and the bulkhead connection break can.

The object of the invention is to create a bulkhead fastening fitting made of plastic that is functionally reliable and the assembly is considerably simplified.

This object is achieved in particular by the features of the main claim. Further useful refinements of the invention are the subject of the subclaims.

The invention is explained in more detail by way of example with the aid of the drawing. Show it:

1 shows a half-section through and a half-view of the bulkhead fastening fitting,

2 shows a half-section through and a half-view of the bulkhead connector, Fig. 3 is a half-section through and one

half-view of the sliding piece, FIG. 4 a half-section through and one

half view of the retaining ring. 30th

The new fastening fitting for hose lines in an opening in a wall z. B. a motor vehicle, preferably in an opening of a motor vehicle sheet metal, consists essentially of plastic and enables

SchloBbleiche 20, Postlach 130219 D-5600 Wuppertal 1 Patent Attorney Dr.-Ing Dipl -Ing A. So «

Telephone (0202) 445096/451226 ■ Telex: 8591273 soza patent attorney Dipl.-Ing. Chr. Zapf

130027/0237

DR SOLF & ZAPF

Approved representatives at the European Pate.iUmt
Professional Representatives before the European Patent Office

preferably a plug connection for the hose lines. It is essential to the invention that the new fastening fitting is a male fastener. It essentially has the bulkhead connector 1 with a stop collar or -flansch 2 and a seated on the bulkhead connector 1 sliding piece 3, which with a on the Sliding piece 3 seated retaining ring 4 is held on the bulkhead connector 1.

The bulkhead connector 1 is inserted through an opening 5 in a wall 6, for example a vehicle panel and has a plug nipple 7, 8 at both ends for attaching a hose coupling (not shown) on. The type of connection of the hoses with the bulkhead connector is not the subject of the invention. The connection can be implemented in any way. However, a plug-in coupling connection is useful because this makes the assembly of the lines much easier.

The stop flange 2 is at the end of the plug-in nipple 8 arranged, the diameter of which should be greater than the diameter of the opening 5 in the wall 6 the stop flange 2 can be set with its contact surface 9 against the wall 6, so that the flange 2 can act as an abutment. Preferably another one sits between the contact surface 9 and the wall 6 Sealing ring washer 10 to seal the space on the left or right of the wall 6 and the plug-in fastening to protect against excessive contamination and to secure the valve against twisting.

The plug nipple 7 follows towards the center of the bulkhead connector towards an outwardly offset cylindrical sliding surface 11. A toothed ring joins the sliding surface 11

Schtoebteiche 20, Postfach 130219 D-5600 WUopertal 1 Telephone (0202) 445096/451226 Telex: 8591273 soza

Patent attorney Dr.-Ing Dipl-IngASolf Palentanwalt Dip! -Ing. Chr. Zapf

130027/0237

DR SOLF & ZAPF

Authorized representatives at the European Pattniamt
Professional Representatives before the Ευορεεη Prtent Off ce

profile 12 with several toothed rings 13, wherein the toothed rings are preferably barbed-like in cross-section are, specifically in the direction of the flange 2. In this respect, the toothed rings 13 have a plug-in nipple 7 pointing flat inclined flank 14 and a plug-in nipple 8-sided, locking flank preferably arranged at right angles to the longitudinal axis, possibly even back-turned 15 on.

The locking profile 12 expediently extends continuously up to almost the flange 2. The outer diameter of the toothed rings 13 should be approximately the same as the diameter correspond to the sliding surface 11.

The sliding piece 3 seated on the sliding surface 11 of the bulkhead connector 1 has an inner diameter which corresponds approximately to the outer diameter of the sliding surface 11. It consists of the nipple 7-sided spring arm base ring 16, from which towards the flange 2 at least two spring arms separated from one another by longitudinal slots 17 18 extend. Eight spring arms 18 distributed symmetrically around the circumference are preferably provided. The spring arms each have a partially hollow cylinder surface 19 on the inside, the surfaces 19 almost facing one another Supplement a closed hollow cylinder, the inner diameter of which corresponds to the inner diameter of the spring arm base ring 16 corresponds. At the end of each surface 19, at least one inwardly facing partial ring web 20 is arranged. the Web 20 cooperate with the locking profile 12 like a ratchet. For this reason, the locking edge 21 is the Partial ring webs 20 also arranged at right angles or possibly turned back to the longitudinal axis of the bulkhead connector 1, so that the locking edges 21 and locking flanks 15 can be engaged behind.

Schloßbleiche 20. P.O. Box 130219 D-5600 Wuppertal 1 Telephone (0202) 445096/451226 Telex: 8591273 soza

Patent attorney Dr-Ing Dipl-Ing A SoIf Patent attorney Dipl.-Ing Chr Zapf

130027/0237

DR SOLF & ZAPF

Authorized representatives at the European Ppter'am *
Professional Representatives before the EuOpe ^ n Patent Of.ice

10

Each spring arm web 22 of a spring arm 18, which has at least one locking web 20 on the inside and at the end carries, goes into an obliquely outwardly directed, the web 22 overhanging support arm 23, whose End edge 24 rests against the fastening wall 6 and is supported there. Furthermore, there is expediently another outwardly leading chamfer 25 downstream of each partial ring web 20, which enables the pushing of the sliding piece to facilitate on the bulkhead connector and expanding the spring arms.

The retaining ring 4 arranged on the sliding piece 3 has the task of after the locking edges 21 have engaged to hold the sliding piece 3 immovably on the bulkhead connector with the locking flanks 15. To this end he is pushed onto the sliding piece until the inside retaining web 26 in the for it outside on the Spring arm webs 22 arranged groove 27 engages. The retaining ring 4 then sits positively on the spring arm webs 22 and preferably extends up to the bend 28 of the support arms 23. This allows the spring arm webs 22 no longer give way to the outside and are widened. To simplify assembly the retaining ring has a grip flange 29 on the outside and the bevel 30 on the inside.

The assembly of the new plug-in fastening fitting is particularly easy. First, the bulkhead connector 1 inserted into the opening 5 until the flange 2 or the sealing ring 10 rests on the outside of the wall 6. Then the sliding piece 3 is pushed on from the opposite side until the support arms 23 against from the outside the wall 6 abut. The inclination of the support arms and their elasticity allow a

SchloCWeiche 20. Postfach 130219 D-5600 VKipperial 1 Tetefon (0202) 445096/451226 Telex: 8591273 soza

130027/0237

Palentanwalt Dring DipWnq A So » Patent attorney Dipl-IngChr Zap "

DR SOLF & ZAPF

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Professional Representatives before the European Pa'ent Office

Bending back until the next latching of the latching means 13, 20 takes place after the edges 24 have abutted is. Due to the possibility of elastic bending back of the support arms in connection with the fixed grid dimensions of the locking means, different wall thicknesses can be compensated. Also broadcast the support arms a desired preload on the fastening elements due to the elastic bending back, which is retained over long periods of time because of its elasticity. Bending moments acting on the valve can easily be added because the valve is able - due to the inclination the support arms - to evade elastically to the side. Furthermore, the new mounting fitting can be due to the length of the toothed ring profile can be used for different wall thicknesses.

After the locking means have engaged, the retaining ring 4 is pushed on until its web 26 engages in the grooves 27. The fastening fitting is thus positioned in the wall 6.

It is particularly advantageous that the new plug-in fastening armature can be used several times because it is without Difficulty is dismantled. To loosen the fastening fitting, simply pull off the retaining ring, which disengages when there is little pulling force. Then the initial area of the spring arm base ring 16 is compressed and at the same time pushed forward so that the locking means disengage and the sliding piece is removed can be.

With the new fastening fitting, not only have the previously usual fastening elements been completely

Schloebleiche 20. P.O. Box 130219 D-5600 \ Mjppertal 1 Welon (0202) 445096/451226 Telex: 8591273 soza

Patent attorney Dr.-Ing. Dipl-Ing A SoIf Patent attorney Dipl.-Ing. Chr Zapf

130027/0237

DR SOLF & ZAPF

Authorized representative at the European Patent Office
Professional Representatives before the European Pa'ent Office

left sighted and a completely different element, namely a plug-in element, developed, but it was In addition, a very simply structured, functionally reliable device was created which, above all, can withstand long-term stresses, which occur in motor vehicles and usually on such fasteners act, withstands better than usual bulkhead mounting fittings.

According to a particular embodiment of the invention, the sliding piece 3 has an annular groove 31 on the outside at the front on the spring arm base ring 16. The web 26 of the retaining ring 4 can sit in this annular groove in the pre-assembly position of the retaining ring. In this respect, the sliding piece 3 with the flange 29 of the retaining ring can be pushed onto the locking profile 12 until the edges of the support arms 23 are supported against the wall 6 and the locking means are locked. Then the ring 26 slides out of the annular groove 31 into the annular grooves 27, whereby the valve is locked. This results in a particularly quick and easy assembly; because when the parts are delivered, the retaining ring can already sit on the sliding piece.

It is expedient for all parts of the new plug-in fastening fitting to exist made of injection-molded plastic parts, because the injection-molded parts ensure high strength.

Schloßbleiche 20. P.O. Box 130219 · D-5600 Wuppertal 1 Patent Attorney Dr.-Ing. Dipl-Ing. A SoIf

Telephone (0202) 445096/451226 Telex: 8591273 soza Patent Attorney Dpl.-lng.Chr; Tap

130027/0237

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Claims (11)

Expectations: Fastening fitting for wall ducts, in particular for connecting two hose lines through an opening in a wall with a going through the opening, having a stop collar Connection element for the hose lines and means for fixing the connection element on the Wall, characterized in that the valve consists of plastic parts and for fixing on the connecting element pluggable and latchable and lockable holding means are provided. 2. Fastening fitting according to claim 1, characterized in that the connecting element a bulkhead plug (1) with a stop collar (2) is a sliding piece on the bulkhead plug (1) (3) is attached, with a retaining ring (4) attached to the sliding piece (3) on the Bulkhead connector (1) is held, the sliding piece having latching means that with ratchet-like Latching means of the bulkhead connector (1) interact, and the sliding piece also has support elements, referring to the stop collar (2) ScNoBMeiche 20. P.O. Box 130219 D-5600 \ Mjppertal 1 Telephone (0202) 445096/451226 ■ Telex: 8591273 soza Patent attorney Dr.-Ing. DtpWng A SoIf Patent attorney Dipl.-Ing. Chr. Zapf 130027/0237 DR SOLF & ZAPF Approved representatives at the European Patent Office
Professional Representatives before the European F ^ tent Office support the other side of the wall. 3. Fastening fitting according to claim 1 and / or 2, characterized in that the locking means of the bulkhead connector (1) from a toothed ring profile (12) with several toothed rings (13) exist, wherein the toothed rings are preferably barbed-like in cross-section and a flat inclined flank (14) pointing towards the plug-in nipple (7) and an 8-sided plug-in nipple have right-angled locking flank (15). 4. "Fastening fitting according to one or more of claims 1 to 3, characterized in that that the sliding piece (3) consists of a nipple 7-sided spring arm base ring (16) consists, of which at least two extend to the flange (2) through longitudinal slots (17) from each other separate spring arms (18) extend, the spring arms each having a partially hollow cylinder surface on the inside (19) have, at the end of each surface (19) at least one inwardly facing, as a latching means serving partial ring web (20) is arranged, which has a locking edge arranged at right angles (21) having, wherein the locking edges (21) can engage behind one of the locking flanks (15). 5. Fastening fitting according to claim 4, characterized in that each spring arm web (22) of a spring arm (13) in a support arm which is directed obliquely outward and protrudes over the web (22) (23) passes, the end edge (24) of which is supported on the fastening wall (6). SchloBbleiche 20, Postfach 130219 D-5600Vy ^ Dpertal1 Patent Attorney Dr-Ing Dpi-Ing. A. SoB Telephone (0202) 445096/451226 Telex: 8591273 soza Palentanwalt Dtpl.-lngChr. Tap 130027/0237 DR SOLF & ZAPF Authorized representatives at the European Patent Office Professional Representatives before the European Potent Office 6. Fastening fitting according to claim 4 and / or 5, characterized in that each partial ring web (20) is followed by an outwardly leading bevel (25). 7. Fastening fitting according to one or more of claims 1 to 6, characterized in that that a cylindrical sliding surface (11) is arranged upstream of the toothed ring profile (12). 8. Fastening fitting according to one or more of claims 1 to 7, characterized in that that the retaining ring (4) has a retaining web (22) on the inside, which into the outside the groove (27) arranged in the spring arm webs (22) is designed to be snap-in. 9. Fastening fitting according to claim 8, characterized in that the retaining ring (4) sits positively on the spring arm webs (22) and extends to the bend (28) of the support arms (23) extends. 10. Fastening fitting according to claim 8 and / or 9, characterized in that the retaining ring (4) has a grip flange (29) on the outside and the bevel (30) on the inside. 11. Fastening fitting according to one or more of claims 1 to 10, characterized in that that the sliding piece (3) on the outside front on the spring arm base ring (16) has an annular groove (31) in which the web (26) of the retaining ring (4) sits in the pre-assembly position. Schloßbteiche 20. Postfach 130219 ■ D-5600 Wuppertal 1 Tetefon (0202) 445096/451226 Telex: 8591273 soza Patent attorney Dr-Ing Dtpl.-Ing A Sotf Patent attorney Dipl -Ing Chr. Zapf 130027/0237