DE102018211494B3 - Aperture arrangement with increasing push-on resistance of the tailpipe trim and associated exhaust arrangement - Google Patents

Abstract

The invention relates to a diaphragm arrangement (12) with a tail pipe diaphragm (22) and a spring (14). It is characterized in that the spring (14) has a by a tail pipe (36) displaceable stop (40). The spring (14) is deflectable about a support (34). The spring (14) can act as a lever with increasing leverage on the tail pipe (36), the further the tail pipe (36) shifts the stop (40) when pushing the tail pipe (22) onto the tail pipe (36).

Description

Technical area

The invention relates to a diaphragm assembly with growing push-on resistance when pushing a tailpipe. The invention further relates to an exhaust assembly with an increasing delay on pushing the tailpipe.

State of the art

To attach a tailpipe trim to a tailpipe of a motor vehicle, it is known from the prior art to postpone a tailpipe trim with retaining clips for fastening the tailpipe trim to a tailpipe. It must be overcome from the beginning of postponing a comparatively large delay, which is caused by the retaining clips, for example in the form of frictional forces.

From the DE 10 2014 208 722 A1 is known a tailpipe for an exhaust system of a motor vehicle, with a diaphragm tube having a tube axis and can be plugged onto a tail pipe of the exhaust system. The tailpipe orifice has a plurality of fastening elements arranged on a radial inner side of the orifice tube for fixing the tailpipe orifice in the radial direction and in the axial direction.

It is an object of the invention to provide a diaphragm assembly in which the force on the tailpipe when pushing the tailpipe aperture is initially absent or low and increases sharply from a predetermined insertion depth of the tailpipe in the tailpipe in a short time. It is a further object of the invention to provide an exhaust assembly with an increasing push-on resistance of the tailpipe baffle.

The object is achieved by an arrangement according to claim 1. The exhaust assembly according to the invention has the features specified in claim 9. Advantageous embodiments will be apparent from the respective dependent claims.

Disclosure of the invention

The diaphragm assembly with a tailpipe trim for mounting to a tailpipe and a spring is characterized in that the spring has a stop which is movable by the tailpipe. The spring is movable about a support, so that with increasing insertion depth of the tailpipe in the tailpipe aperture by a lever effect of the spring around the support an increasing holding force on the tailpipe is exercisable. The tailpipe trim can be pushed onto the tailpipe until the tailpipe touches the stopper. In a further pushing the tailpipe on the tailpipe, the tailpipe exerts a displacement force on the stop, which is aligned opposite to the direction of the tailpipe blush. The stop is displaced with respect to the tailpipe baffle opposite to the push-up direction of the tailpipe baffle. The spring rests as a movable lever on a stationary with respect to the tailpipe barrier supports. The lever has a first and a second rocker arm each on one side of the support. Due to the displacement of the spring, the first rocker arm of the lever is moved in the opposite direction to the push-on direction of the tailpipe baffle. The second rocker arm exerts a holding force on the tailpipe by the displacement force exerted on the spring and the leverage on the support. The holding force has a component in the direction of the suspension of the tailpipe and a second component in the radial direction in the interior of the tailpipe. Before leverage begins, the tailpipe barb exerts no force on the tailpipe. The tailpipe trim can be pushed onto the tailpipe without resistance until the leverage is applied. With the onset of the leverage, the holding force of the tailpipe baffle quickly increases on the tailpipe so that the tailpipe baffle is attached to the tailpipe.

The spring may have at least one hook-shaped spring clip. By a hook-shaped spring clip, the holding force can be increased.

In an advantageous embodiment of the diaphragm arrangement, the stop is designed as a spring clip. By a spring clip, in particular a hook-shaped spring clip, the spring can better embrace the end face of the tailpipe.

The spring is movably mounted in a fastened to the tailpipe holder. The holder, in particular designed as a slide bearing holder, allows a rectilinear movement of the spring opposite to the direction of the Endrohblende.

The support is formed at one end of the holder. As a result, a spring clip rest against the support.

The holder may have a C-shaped rail. The C-shaped rail may have overhangs on the top to prevent the spring from falling out of the holder.

The holder may have a knob on which the spring is mounted. The spring can be placed between the knob and the top of the holder, on the Be arranged upper side fitting. This allows a controlled guidance of the spring.

The holder may have a welded to the tailpipe, in particular plate-shaped, joint. This allows the holder to be firmly connected to the tailpipe.

The holder may have sheet metal. A holder, which consists at least partially of sheet metal, can be stably formed at comparatively low weight. Preferably, the holder is formed entirely of sheet metal.

The diaphragm arrangement can have a plurality of holders, which are arranged uniformly, in particular along the circumference of the tailpipe diaphragm, and have the previously described holders with previously described springs displaceably arranged therein. This allows a symmetrical effect of the holding forces on the tailpipe to increase the stability of the attachment.

An exhaust assembly comprises an aperture arrangement according to the invention and an end pipe, wherein the tail pipe is arranged on the tailpipe. The tailpipe can be pushed in the exhaust assembly largely without resistance to the tailpipe and then fixed with high holding force to the tailpipe.

In other words, an aperture arrangement with a tailpipe trim for mounting on a tailpipe and a spring is characterized in that the spring is movably mounted in a holder attached to the tailpipe trim around a support of the holder. The spring has a first rocker arm and a second rocker arm. In this case, the first rocker arm on a stop which is movable by the tailpipe. The second rocker arm has a free end for engagement with the tailpipe. The first rocker arm and the second rocker arm are arranged on the support. The spring may have at least one hook-shaped spring clip. The stop can be designed as a spring clip, in particular as a hook-shaped spring clip. The support may be formed at one end of the holder. The holder may be formed as a sliding bearing, having a C-shaped rail, having a knob on which the spring is mounted and / or have welded to the tailpipe, in particular plate-shaped, connection point.

list of figures

Further features and advantages of the invention will become apparent from the following detailed description of several embodiments of the invention, from the claims and with reference to the figures of the drawing showing essential to the invention details. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention. The features shown in the drawing are shown such that the features of the invention can be made clearly visible.

• 1 einen schematischen Längsschnitt durch eine Auspuffanordnung mit einer erfindungsgemäßen Blendenanordnung;
• 2 eine Seitenansicht eines Halters und einer Feder der Blendenanordnung;
• 3 einen schematischen Querschnitt durch den Halter und die Feder;
• 4 eine isometrische Ansicht des Halters und der Feder; und
• 5 eine isometrische Ansicht der Auspuffanordnung.

In the drawing show:

• 1 a schematic longitudinal section through an exhaust assembly with a diaphragm assembly according to the invention;
• 2 a side view of a holder and a spring of the diaphragm assembly;
• 3 a schematic cross section through the holder and the spring;
• 4 an isometric view of the holder and the spring; and
• 5 an isometric view of the exhaust assembly.

Embodiments of the invention

The 1 shows a schematic longitudinal section through an exhaust assembly 10 with an aperture arrangement according to the invention 12 , A feather 14 the aperture arrangement 12 is in a holder 16 , He is through a plate-shaped junction 20 to a tailpipe trim 22 the aperture arrangement 12 welded. The feather 14 is on a knob 24 on the bottom 26 of the owner 16 movably mounted. It lies to a controlled sliding movement at the top 28 of the owner 16 at. The feather 14 has a first rocker arm 30 and a second rocker arm 32 , The feather 14 is on a support 34 at the bottom of the holder 16 movable. In the present case, there is the spring 14 from the first rocker arm 30 and the second seesaw arm 32 , The support 34 separates the first rocker arm 30 from the second rocker arm 32 ,

The first rocker arm 30 protrudes in the radial direction 35 inside over the second rocker arm 32 out. When sliding the tailpipe trim 22 on a tailpipe 36 can the tailpipe 36 on the second rocker arm 32 be led over and on the first rocker arm 30 be moved. The feather 14 has one end on the first rocker arm 30 a first hook-shaped spring clip 38 on. The first hook-shaped spring clip 38 serves as a stop 40 for the tailpipe 36 , When sliding the tailpipe trim 22 pushes the tailpipe 36 with its front side against the stop 40 , The first rocker arm 30 experiences in relation to the tailpipe 22 a shifting force 42 , the postponement direction 44 directed against. The feather 14 has at the other end a second hook-shaped spring clip 46 with the second rocker arm 32 on, on the first rocker arm 30 on the support 34 is trained. The second rocker arm 32 acts through the on the spring 14 acting displacement force 42 and the leverage on the support 34 with a holding force 48 on the tailpipe 36 , The holding force 48 is in relation to the tailpipe trim 22 oriented obliquely and has a component in the extension direction 44 and another component in the radial direction 35 inside. The holding force 48 decreases with increasing insertion depth of the tailpipe 36 in the tailpipe trim 22 too, if the tailpipe 36 a stronger shifting force 42 on the spring 14 exercises. This allows the tailpipe trim 22 virtually no effort on the tailpipe 36 deferred and after the contact of the tailpipe 36 with the stop 40 with increasing holding power 48 on the tailpipe 36 be fixed.

The 2 shows a side view of the holder 16 and the spring 14 , The holder 16 is as a plain bearing with a C-shaped rail 52 educated. The knob 24 is at the bottom 26 ie the radially inner side, the C-shaped rail 52 educated. On the knob 24 and at the top 28 the C-shaped rail is the spring 14 with the rocker arms 30 . 32 arranged on the support 34 is applied. At the C-shaped rail 52 is the plate-shaped joint 20 educated.

The 3 shows a cross section through the holder 16 with the C-shaped rail 52 and the knob 24 on the bottom 26 the C-shaped rail 52 as well as the spring 14 with the first spring clip 38 , The C-shaped rail 52 indicates the controlled storage of the spring 14 an overhang 54 at the top 28 on.

The 4 shows an isometric view of the holder 16 and in the C-shaped rail 52 arranged spring 14 with the first rocker arm 30 and the second seesaw arm 32 , You can also see the nubs 24 at the flattened bottom 26 as well as the connection point 20 of the owner 16 ,

The 5 shows an isometric view of the exhaust assembly 10 with the tailpipe trim 22 with three holders 16a . 16b . 16c and three in each case a holder 16a - 16c arranged springs 14a . 14b . 14c , which is an end of the tailpipe 36 embrace. The holders 16a - 16c are along the perimeter of the tailpipe trim 22 equally distributed. As a result, the holding forces, which are each caused by the springs, grip circumferentially evenly on the tailpipe 36 at.

Taking a synopsis of all the figures of the drawing, the invention in summary relates to a diaphragm assembly 12 with a tailpipe trim 22 and a spring 14 , It is characterized in that the spring 14 one through a tailpipe 36 sliding stop 40 having. The feather 14 is a support 34 deflectable. The feather 14 can be used as a lever with increasing leverage on the tailpipe 36 act, the farther the tailpipe 36 the stop 40 when sliding the tailpipe trim 22 on the tailpipe 36 shifts.

Claims (9)

An orifice assembly (12) having a tailpipe baffle (22) for mounting to a tailpipe (36) and a spring (14), characterized in that the spring (14) has a stop (40) movable through the tailpipe (36) and the spring (14) about a support (34) is movable, so that with increasing insertion depth of the tail pipe (36) into the tailpipe (22) by a lever action of the spring (14) to the support (34) an increasing holding force on the tailpipe (36) is exercisable, wherein the spring (14) in a at the Endrohrbrende (22) attachable holder (16) is movably mounted and the support (34) at one axial end of the holder (16) is formed. Aperture arrangement after Claim 1 wherein the spring (14) has at least one hook-shaped spring clip (38, 46). Aperture arrangement according to one of the preceding claims, wherein the stop (40) as a spring clip (38, 46) is formed. Aperture arrangement according to one of the preceding claims, wherein the holder (16) has a cross-sectionally C-shaped rail (52). Aperture arrangement according to one of the preceding claims, wherein the holder (16) has a nub (24) on which the spring (14) is mounted. Aperture arrangement according to one of the preceding claims, wherein the holder (16) has a connection point (20) welded to the tailpipe diaphragm (22). Aperture arrangement according to one of the preceding claims, wherein the holder (16) comprises sheet metal. Aperture arrangement according to one of the preceding claims, wherein the diaphragm arrangement (12) has a plurality of holders (16a-16c) with springs (14a-14c) arranged displaceably therein. Exhaust assembly (10) having a diaphragm assembly (12) according to one of the preceding claims and an end tube (36), wherein the tail tube (22) on the tail pipe (36) is arranged.

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