EP0774101A1

EP0774101A1 - Roof venting pipe

Info

Publication number: EP0774101A1
Application number: EP95923282A
Authority: EP
Inventors: Günter POCHER; Klaus Craemer
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-03
Filing date: 1995-06-09
Publication date: 1997-05-21
Also published as: DE9412522U1; AU2789595A; WO1996004513A1

Abstract

A roof venting pipe (1) has a grid structure (G) at its outlet side at least partially formed by circular rungs. A covering cap (2) mounted thereon form-fittingly engages with a central projection (4) the inside of one of the circular rungs (5). Supporting fingers project from the lower side of the covering cap and are supported outwards on the top side of the roof venting pipe (1). In order to obtain a more simple design that allows an improved flow, the supporting fingers (7) are designed as longitudinal ribs on the outer surface (8) of the central projection (4) and are supported on the circular rungs (5) crossed by the projection (4).

Description

00001 roof ventilation pipe 00002

00003 The invention relates to a roof ventilation pipe

00004 with muzzle-side, at least partially ring-shaped

00005 m extending rungs formed lattice structure and

00006 cover cap above, which with a zen

00007 tral projection into the inside of a

00008 circular ring engages, and in which of the

00009 Bottom of the cap protruding support fingers that protrude

00010 on the top of the roof ventilation pipe

Support 00011 on the outside. 00012

A roof ventilation pipe of this type is through the EP-PS

00014 0341376 known. The far away from the central

00015 jump, cantilevered from the cover cap ceiling

00016 starting from downward support fingers rest

00017 the top of an outer circular ring near the pipe wall

00018 rung. This results in a good tilting

00019 free assignment of the cover cap, secured by the

00020 central, at the upper pipe end of the roof ventilation pipe

00021 latching projection; are free-standing support fingers

00022 but at risk of demolition and also require

00023 special technical attention. 00024

The object of the invention is to provide a generic roof

00026 ventilation pipe to simplify construction and flow

Technically optimize. 00028

00029 This object is achieved by the

00030 bene invention. 00031

00032 The subsequent claims give advantageous

00033 training courses. 00034 According to such an embodiment is a generic

00036 roof ventilation pipe structurally and effectively improved

00037 sert. Structurally in that cantilever training

00038 the support finger can be dispensed with and

Technically, 00039 in that such support fingers no longer

00040 present as a flow obstacle. What is striven for is

00041 the pressure loss with stronger volume flows as possible

To keep 00042 low. The structural means for this are

00043 fold and functional. In concrete terms, the procedure was such that

00044 the support fingers as lateral ribs on the lateral surface

00045 of the central projection are formed and on

00046 of the circular rib rung penetrated by the projection

Support 00047. The circular counter-acting means

00048 ring rung now also forms the support. With regard to the strength, there is no loss of strength,

00050 because of the outer surface of the central projection

00051 seated longitudinal ribs the pin-like projection

00052 and the longitudinal ribs. Such longitudinal ribs

In height, 00053 can be chosen so that it does not have

00054 the wall thickness of the counter locking means

00055 circular rungs go out, rather in cross-sectional

00056 stay shadow. As a result, they are not in the flow

00057 mung. To provide balanced support and good

To get 00058 latching, it is further proposed that

00059 the support fingers in an even circumferential distribution

00060 arranged the outside of the tubular projection

Are 00061. As a rule, a "three-point

00062-like "distribution of the longitudinal ribs. Preferred and illustrated

00063 is a foursome version. The lead pipe

To design 00064 mig, opened despite the small wall thickness

00065 a high resistance to turning forces,

00066 e.g. due to wind, snow load, weight

00067 increase due to ice formation or simply putting it on

00068 of a weighty flying animal. Indeed,

00069 practically lent the projection a zigzag shape 00070 ring cross profile in front. In terms of production technology, it is

00071 borrowed interesting that the support fingers are in alignment

00072 longitudinal slots of the projection. Such, generally in 00073 from the free end of the projection

00074 slot gives you in the form of a locking pin

00075 fens designed a high degree of flexibility.

00076 This is not only advantageous for locking,

00077 but also for removing the snap connection,

00078 which by inserting a special tool from

00079 below is possible, so generally the interchangeable

00080 speed of the cap allowed. Because the lead alone

00081 now carries or holds the cap, is a structural measure

00082 me still sensible in that the slots underneath

00083 end half of the center of the ring rung. Thereby

00084 can be an inexpensive access route for the molding tool

Use 00085, form the support fingers and exactly

00086 make the projection stiffer over a part length,

00087 i.e. in the foot area. 00088

The object of the invention is described below

00090 of an illustrative embodiment example

00091 les explained in more detail. It shows: 00092

00093 FIG. 1 shows the roof ventilation designed according to the invention.

00094 pipe in vertical section with associated

00095 cover cap, 00096

00097 Figure 2 shows the latching area between the projection and

00098 circular ring shoot in comparison with FIG.

00099 loaned enlarged reproduction, 00100

00101 FIG. 3 shows the projection in perspective individual

00102 position, slightly enlarged, 00104 FIG. 4 the roof ventilation pipe in individual representation,

00105 in vertical section, 00106

00107 Figure 5 is a top view of this, 00108

00109 Figure 6, the cap in a single representation, namely

00110 in side view, 00111

00112 FIG. 7 the top view of this,

00113

00114 Figure 8 is the bottom view of the cap and

00115

00116 Figure 9 is a half of the cap in vertical section.

00117

00118 The roof construction penetrating the roof formwork of a house

00119 ventilation pipe 1 or only the upper section of the

00120 same forming roof ventilation pipe that shown

00121 venting device V is on the orifice side of one

00122 Cover cap 2 (Figure 1). 00123

00124 The cover cap 2 is by means of a supported plug

00125 Snap connection S can be assigned. It can be a reversible

00126 act the type of connection. 00127

00128 Between the overlapping cover cap 2 and the mouth

00129 end of the roof ventilation pipe 1 is located on the manure side

00130 an all-round spacing 3. The latter forms

00131 the flow path. 00132

00133 The push-fit and the support of the cover cap

00134 2 are on the center of the roof ventilation pipe 1

00135 concentrated, so lie in the longitudinal central axis x-x

00136 of the venting device V. 00137 00138 The part of the plug-snap connection on the cover cap side

00139 S is a protrusion 4. The part of the plug-snap connection S on the vent pipe side is taken over by a circular rung 00141. The protrusion 4 penetrates it. 00142

00143 The free end of the projection 4 has locking lugs 6.

00144 whose outside back forms the plug-in

00145 opening relief slope 6 '. A steep flank 6 "facing away from the free 00146 end of the latch 6

00147 latches 6 snaps behind the lower front edge 5 '

00148 the circular ring rung 5. The cover cap assigned in this way

00149 2 is secured against deduction upwards. 00150

00151 The defined support of the cover cap 2 in the

00152 tion according to drawing is done via support finger 7. Last

00153 tere are on the essentially cylindrical shell

00154 surface of the projection 4 in the form of longitudinal ribs real

00155 siert. Such square cross-section

00156 Longitudinal ribs are molded in the same way. They are rooted de

00157 ge in said surface 8 and also with

00158 its upper end in the inner surface 9 a weak

00159 conically oriented ceiling 10 of the cover cap 2.

00160 The cone tip 11 of the ceiling 10 lies in the longitudinal center

00161 telaxis x-x. 00162

00163 The inner surface 9 of the ceiling 10 and the outer surface 8

00164 of the projection 4 go over at the foot of the projection

00165 concave, rotationally symmetrical circumferential curvature 12

00166 over one another. So one is disadvantageous

00167 Notch effect avoided. The lead is really

00168 breakproof, favored by the boom-like

00169 extended support finger 7. 00170

00171 Downwards, in the direction of the circular ring 5

00172 send end of the support fingers 7 forms a support surface 00173 13. The latter rests in the illustrated snap-in

00174 development of the plug-snap connection S on the upper end

00175 edge 5 "of the circular rung 5. 00176

00177 The horizontally measured height of the support

00178 eng 7 forming longitudinal ribs does not go over the wall

00179 thickness of the circular ring rung 5; the support fin

00180 ger 7, or its support surface 13, is therefore not

00181 acts as a flow obstacle in the upper one

00182 termination of the roof ventilation pipe 1 forming grid

00183 Structure G of the venting device V and reduced in size

00184 therefore not the grid openings 14. 00185

00186 Further components of the lattice structure G are radial

00187 ribs 15. The latter go from the wall of the mentioned

00188 ten inner circular ring shoot 5 and root in one

00189 the edge of the vent pipe 1 closer second

00190 circular ring rung 16. The latter extends concen-

00191 tric and level with the internal circular ring

00192 rung 5. 00193

00194 Outside of the peripheral or second circular ring sprouts

00195 se 16 attach radial / vertical rungs 17. They go

00196 under external and internal curvature in to the wall thickness of the

00197 vent pipe 1 sections of equal cross section

00198 and leave relatively large git

00199 ter breakthroughs 14 with a rounded contour on the tube side

00200 (see Figure 4). The fillet has the reference symbol

00201 18. The fillet and the size of the grid openings

00202 14 allow fingers to reach through

00203 operating hand to remove the entangled

00204 ventilation pipe 1 can be easily screwed on or off

00205 NEN. The end opposite to the lattice structure G.

00206 of the screw tube existing thread carries this

00207 Reference number 19. About such a threaded connection 00208 is also the accessibility required for

00209 the release of the projection 4. 00210

00211 For this purpose, the locking lugs 6 simply need radially inwards

00212 directed to be compressed until it is under the

00213 clear cross section of the interior of the circular rung 5 straight

00214 ten. This can be done using a tool,

00215 which designed the frustoconical or conical

00216 end section of the locking lugs 6 from the free end of the front

00217 jump 4 over here. 00218

00219 The corresponding joint mobility of the circular

00220 cut-out transversely curved locking lugs 6, there are a total of

00221 realized with four, results from longitudinal slots

00222 20, which the tubular projection 4 from the free end

00223 split crosswise. It's an equiangular

00224 division before. 00225

00226 The longitudinal slots 20 are aligned so that they with

00227 which are provided in the same number as the longitudinal slots

00228 Nine support fingers 7 aligned. The uniform circumferential

00229 Distribution of the support fingers 7 on the outside of the

00230 tubular projection 4 goes out particularly clearly

00231 Figure 8. The aligned alignment has that

00232 advantage that using the longitudinal slots 20 respec-

00233 tive of the longitudinal slot plane, the support surfaces 13 of the

00234 support fingers 7 can be formed easily and precisely

00235 can. No cross slides are required for this.

00236 The locking conical or mushroom-like shape

Rather, 00237 of the free end of projection 4 is freely overcome 00238.

00239

00240 As can be seen particularly clearly from FIG. 2, ends

00241 the longitudinal slots 20 below the cross-sectional center

00242 xx the axial cavity 5 '''of the inner circular ring sprouts 00243 se 5. In relation to the axial length of this cavity 5 '*' 00244, a good two thirds of the penetrating section 00245 of the projection 4 are unslotted and therefore particularly 00246 stable, which, in conjunction with the support surfaces 13 of the 00247 support fingers 7, is a high degree of stiffening compared to 00248 turning forces. The 00249 region of the projection 4 on the root side in particular is considerably stiffened by the longitudinal ribs 00250. In addition, there is the effect of the conical shape of the wall of the ceiling 10. This 00252, even weak conical shape, takes on that of a ceiling which is flat in the manner of a mem¬ 00253. 00254 00255 The hollow protrusion 4 also contributes to the material saving that is interesting again today, which is 00257, which has a significant impact on mass-produced items. 00258 00259 Stabilization with respect to the cover cap 2 00260 also proves a rib structure on the top of the cap 00261. These are ribs 21 which are aligned with the cone tip 11 and are co-molded 21. The latter 00263 overlaps the convexly rounded transition zone 22 between the outer wall 23 and the ceiling 10 of the cover cap 2. 00265 In the upper third of the same, the ribs 21 merge into one another via 00266 concave arc zones 24. The areas around 00267, the ribs 21 fanning out towards the bottom, appear 00268 as depression 25, which clearly appears on the inside of the cover cap 00269 2 as an imprint 26, as can be seen from FIG. 00270 9. The whole is achieved by wall offset by 00271 the amount of a wall thickness and has a highly stiffening effect on 00272 this zone despite the small wall thickness of the cover cap 00273 2. 00274 00275 All disclosed features are essential to the invention. In 00276 the disclosure of the application, the 00277 disclosure content of the associated / attached priori 00278 documents (copy of the pre-registration)

00279 included, also for the purpose of characteristics of this

00280 documents in claims of the present application

00281 to record.

Claims

00282 A n s p r ü c h e 00283

00284 1. roof ventilation pipe (1) with muzzle-side, at least

00285 at least partly from ring-shaped rungs

00286 formed lattice structure (G) and above

00287 cover cap (2), which with a central projection

00288 (4) positively into the interior of a circular rung

00289 (5) engages, and in which of the cover cap un

00290 protruding support fingers (7), which are on the

00291 Top of the roof ventilation pipe (1) further outside

00292 support, characterized in that the support

00293 finger (7) as surface side (outer surface 8)

00294 longitudinal ribs of the central projection (4) are formed

00295 are and on the penetrated by the projection (4)

Support 00296 circular ring rung (5). 00297

00298 2. roof ventilation pipe according to claim 1 or in particular

00299 re thereafter, characterized in that the support fingers

00300 (7) in a uniform circumferential distribution on the outer side

00301 te a tubular projection (4) are arranged. 00302

00303 3. Roof ventilation pipe according to one or more of the

00304 preceding claims or in particular according thereto,

00305 characterized in that the support fingers (7) are aligned

00306 to longitudinal slots (20) of the projection (4). 00307

00308 4. Roof ventilation pipe according to one or more of the

00309 preceding claims or in particular according thereto,

00310 characterized in that the longitudinal slots (20) under

00311 half the cross-sectional center (y-y) of the ring rung

00312 (5) end.