DE102014114568A1 - Arrangement comprising a grommet for mounting on a housing wall opening and method for mounting the grommet on the housing wall opening - Google Patents

Abstract

The invention comprises an assembly (10) comprising a spout (11) and a retaining ring (12). The arrangement (10) serves for mounting the grommet (11) in a housing wall opening (13) of a housing wall (14). There is also proposed a method of assembling the spout (11). The spout (11) is made of elastically deformable material and has a mounting portion (21) with a receiving pocket (27) which is accessible in an axial direction A through a small-shaped pocket opening (28). Holding projections (36) or other suitable retaining means (35) are provided around the receiving pocket (27) on the exterior of the bushing (11) in order to surround the bushing (11) with the edge (15) of the housing wall (14) surrounding the housing wall opening (13) ) to connect sealingly. After inserting the spout (11) in the housing wall opening (13) of the retaining ring (12) through the pocket opening (28) is inserted into the receiving pocket (27) and secures the spout (11) in the housing wall opening (13). Preferably, a sealing force improving clamping force between an outer wall (29) of the receiving pocket (27) and the edge (15) of the housing wall (14) by the locking ring (12) is generated.

Description

The invention relates to an arrangement comprising a spout and a retaining ring. The grommet is adapted for mounting to a housing wall opening, for example, to seal the cable or lead-through according to a desired IP protection class, for example against the ingress of dust or spray. The spout consists of an elastically deformable material.

Such spouts are known per se and available for example as cable grommets or pressure equalizing in the market.

DE 10 2012 002 936 A1 shows, for example, a mounting device for mounting a provided for receiving cable grommets holding frame to an opening. With the help of the frame nuts are held by magnetic forces in alignment with screw holes and screwing a cable feedthrough device can be simplified.

DE 10 2011 054 294 A1 describes a cable gland and a method for mounting the cable gland. The cable gland consists of two frame parts, which form a frame element. Cable grommets can be picked up and held between the two frame parts, through which cables are led later.

Such assemblies of spouts on housing openings are very expensive. It may therefore be considered an object of the present invention to provide a grommet assembly and method which facilitates assembly of the grommet to a housing wall opening.

This object is achieved by an arrangement having the features of claim 1 and a method having the features of claim 11.

The arrangement according to the invention has a grommet for mounting on a housing wall opening, as well as a securing ring. The spout is made of elastically deformable material. Under elastically deformable material is any material to understand that can be elastically deformed in the usually occurring during assembly forces, especially manually by hand. The spout may for example consist of rubber, silicone, an elastomer or the like.

The spout has a mounting section. This mounting portion serves to arrange the spout in the housing wall opening and in particular to connect with an annular wall enclosing the housing wall opening edge of the housing wall. For this purpose, the grommet has a holding means on the mounting portion. The edge of the housing wall opening is completely closed in the circumferential direction around the housing wall opening and in particular integrally formed. He can not be separated so non-destructive. The housing wall has only a single housing wall part, which limits the housing wall opening.

On the mounting portion also has a receiving pocket. The receiving pocket is provided and adapted to receive the circlip or a ring portion of the locking ring to secure the spout with the retaining means in the housing wall opening and preferably to hold it by clamping. For this purpose, the holding means is arranged on the outside of the spout in the mounting section. The inside of the grommet faces the cable to be performed or the cable to be performed.

The spout can be rotationally symmetrical about a longitudinal axis. It can generally have at least sections hollow cylindrical and / or a hollow conical shape.

The spout can be realized in cross section, for example, circular, polygonal, elliptical or in any other suitable contour.

The retaining ring has a handling part and a ring part. On the handling part, a pressing surface is preferably provided, by means of which the securing ring can be inserted manually in the pressing direction into the receiving pocket when the spout is in the housing wall opening. In particular, while the ring member is pressed into the receiving pocket and generates an outwardly acting clamping force between an outer wall of the receiving pocket and the edge to the housing wall opening.

With this arrangement, a very simple assembly can be achieved. The spout is inserted into the housing wall opening and fastened by means of the holding means to the edge enclosing the housing wall opening. Subsequently, the securing ring is pressed from a mounting side, to which the receiving pocket is open, through the pocket opening into the receiving pocket. The retaining ring cooperates with the retaining means and secures the spout in the housing wall opening.

Due to the good sealing effect of the arrangement, a high IP protection class can be achieved, in particular IP 66.

Preferably, the ring part of the locking ring is pressed into the receiving pocket, while the handling part outside the receiving pocket is arranged. On the outside of the ring part, a clamping force is generated on an outer wall of the receiving pocket, which is pressed against the edge of the housing wall opening. As a result, the sealing effect between the spout and the edge around the housing wall opening can be improved.

In a preferred embodiment, the receiving pocket has an inner wall and an outer wall surrounding the inner wall on the outside. The inner wall and the outer wall are preferably connected to each other, in particular integrally without seam and joint. For example, it is possible to form the receiving pocket by an everted end portion of the spout.

The spout is preferably made of a uniform material and is designed without seam and joint integral.

As a holding means, for example, an existing in the mounting portion retaining recess may be provided which is open to the outside. For example, the retaining recess may be formed by an annular groove about a longitudinal axis of the spout, which is open to the outside from the longitudinal axis. The retaining recess is adapted to receive an edge enclosing the housing wall opening.

In one embodiment, the retaining recess may be formed between two retaining projections projecting outwardly from the mounting portion. For example, each holding projection may be designed to be closed in a ring around a longitudinal axis of the spout. In particular, in one embodiment, the retaining projections project outwardly from the outer wall of the receiving pocket.

It is preferred if the handling part is aligned obliquely or at right angles to the ring part. The ring part of the securing ring is adapted to the contour of the housing opening and can be designed, for example, in a circular ring around a longitudinal axis. Other annular closed contours, such as polygonal contours or elliptical contours are possible. In a transverse direction, at right angles to the axial direction, the dimension of the ring part is preferably smaller than the dimension of the handling part and in particular smaller by at least a factor of three to four. Additionally or alternatively, the dimension of the ring member in the axial direction is greater than that of the handling part and preferably at least by a factor of three to four larger. On the handling part, an obliquely or at right angles to the axial direction aligned pressing surface can be provided to press the locking ring in the receiving pocket and to generate a clamping force can. This can preferably be performed manually without tools.

In a preferred embodiment, the handling member has outwardly in a direction perpendicular to the longitudinal axis a dimension which corresponds at least to the dimension of the adjacent retaining projection of the retaining means. In the assembled state, the handling part covers the retaining projection. As a result, the holding projection can be protected against mechanical damage.

The retaining ring has a lower elasticity than the spout. It is made of metal and / or a plastic, for example. The modulus of elasticity of the securing ring is greater than that of the spout, at least by at least one order of magnitude. As a result, the securing ring in the assembled state can generate a clamping force for clamping the grommet on the edge of the housing wall opening.

Advantageous embodiments of the invention will become apparent from the dependent claims and the drawings. Hereinafter, preferred embodiments of the arrangement and the method are explained with reference to the accompanying drawings in detail. Show it:

1 a schematic, perspective view of a mounted in a housing wall opening spout,

2 a longitudinal section through the arrangement 1 along a longitudinal axis and

3 a longitudinal section through the retaining ring of the arrangement according to the 1 and 2 ,

In the 1 and 2 is an arrangement 10 Illustrates to which a spout 11 as well as a circlip 12 belongs. An embodiment of the security ring 12 is in a longitudinal section in 3 illustrated in greater detail.

The order 10 can be attached to a housing wall opening 13 a housing wall 14 or a housing wall section can be arranged. The spout 11 is doing with a housing wall opening 13 enclosing edge 15 the housing wall 14 connected and through the circlip 12 secured. The assembly of the arrangement 10 on the housing wall opening 13 can be done without tools.

The spout 11 serves a cable or cable bushing through the housing wall opening 13 according to a desired IP protection class, for example IP protection class 66 (Dustproof and protection against strong jet water). Thus, for example, jet water and / or splash water and / or dust-protected cable or cable bushings by means of the grommet 11 be achieved. The spout 11 is made of a uniform material without seam and joint. It consists of an elastic material. This is to be understood here as meaning a material which is elastically deformable in the case of assembly forces which usually occur during assembly. The spout 11 may for example consist of rubber, silicone, elastomer or other suitable material or a combination of materials.

At the in 1 and 2 illustrated embodiment, the spout is partially hollow cylindrical and extends along or about a longitudinal axis L. The direction parallel to the longitudinal axis L of the spout 11 is referred to as axial direction A. All directions perpendicular to the axial direction A are referred to collectively here as the transverse direction Q. In the described embodiment, the spout 11 and the locking ring is rotationally symmetrical about the longitudinal axis L. The transverse direction Q could therefore also be referred to as a radial direction. It is still spoken here more generally by the transverse direction Q, because the spout 11 does not necessarily have to be rotationally symmetrical, but also other than circular cross-sectional contours, such as polygonal or elliptical cross-sectional contours, could be used.

The spout 11 has a free end 20 and in the axial direction A on the opposite side a mounting portion 21 , The mounting section 21 serves the spout 11 on the edge 15 the housing wall 14 to fix. The edge 15 is in the circumferential direction around the housing opening 13 Completely closed executed and not destructively separable. The housing wall 14 does not have several, to the housing wall opening 13 adjacent parts.

The spout 11 has starting from the free end 20 to the mounting section 21 towards an increasing diameter. Depending on the diameter of the cable to be performed or the cable to be performed, the spout can 11 cut off at the appropriate place and the cable and the line are carried out. An inside 22 the spout 11 is assigned to the cable or cable to be performed. An outside 23 the spout 11 points away from the longitudinal axis L and the cable or cable to be performed. On the outside 23 Clamps or other fasteners can be attached to the inside 22 the spout 11 to clamp and seal against the performed line or against the performed cable.

In the assembly section 21 is a storage bag 27 educated. The receiving bag 27 has an inner wall completely closed annularly about the longitudinal axis L. 28 , With a greater distance in the transverse direction Q to the longitudinal axis L is the inner wall 28 from an annular wall about the longitudinal axis L completely closed outer wall 29 surround. Between the inner wall 28 and the outer wall 29 is the receiving bag 27 educated. Towards the free end 20 there is the receiving bag 27 at a pocket opening 30 open. The pocket opening 30 forms a continuous annular gap about the longitudinal axis L. Through the pocket opening 30 can the circlip 12 or a part thereof in the axial direction A in the receiving pocket 27 be inserted.

On the pocket opening 30 opposite side are the inner wall 28 and the outer wall 29 connected with each other. The receiving bag 27 is exclusively through the pocket opening 30 open to the outside. For example, the receiving bag 27 be formed by that one the free end 20 opposite end section 31 the spout 11 is everted.

At the mounting section 21 the spout 11 there is also a holding means 35 , The holding means 35 serves the spout 11 on the edge 15 the housing wall 14 to arrange or store. In the preferred embodiment described herein, the retaining means 35 two retaining projections which are annular about the longitudinal axis L. 36 on. The two holding projections 36 are arranged in the axial direction A at a distance from each other, so that between the retaining projections 36 a retaining recess 37 is formed. The dimension of the retaining recess 37 in the axial direction A corresponds to the thickness of the edge 15 or can be chosen slightly smaller, so that the retaining projections 36 axially clamping from opposite sides at the edge 15 issue.

As in 2 can be seen, are the two retaining projections 36 on the outside wall 29 arranged and project in the transverse direction Q, so for example radially to the longitudinal axis L of the outer wall 29 to the outside and thus away from the longitudinal axis L. The holding means 35 and according to the holding projections 36 with the retaining recess 37 are in the area of the receiving bag 27 arranged and are according to the example in the transverse direction Q outside with respect to the receiving pocket 27 arranged.

To secure the grommet in the housing wall opening 13 serves the circlip 12 that in detail in 3 is illustrated. The circlip 12 is for example rotationally symmetrical to the longitudinal axis L executed. He has a ring part 40 in the assembled state in the receiving pocket 27 engages and the grommet 11 secures and preferably applied by clamping. The circlip 12 also has a handling part 41 to the manual and preferably tool-free mounting of the locking ring 12 ,

The handling part 41 is, for example, as a handling ring 42 executed, which extends, for example, substantially in a plane perpendicular to the longitudinal axis L. At its inner end associated with the longitudinal axis L. 43 is the handling ring 42 with the ring part 40 connected. The ring part 40 is, for example, designed as a hollow cylinder and encloses the longitudinal axis L coaxially. This results in cross-section between the ring part 40 and the handling part 41 an approximately L-shaped figure ( 2 and 3 ). On the handling ring 42 is a pressing surface on one axial side 44 present when mounting to impress the ring part 40 in the receiving bag 27 the spout 11 serves.

The ring part 40 extends from the handling part 41 mainly or alternatively exclusively on the pressing surface 44 opposite axial side of the handling part 41 off to a spanking end 45 out. At the insertion end 45 has the ring part 40 For example, a over a first inclined surface 46 conically expanding shape. To form a first securing projection 47 has the ring part 40 axially following the first inclined surface 46 for example, a first ring stage 48 on. At the first ring stage 48 takes the dimension of the ring part 40 in the transverse direction Q starting from the securing projection 47 from. At the extreme end in the transverse direction Q, the first securing projection 47 have an edge.

As in 3 is at an axial distance to the first securing projection 47 a second securing projection 50 educated. Analogous to the first backup projection 47 This is achieved by the fact that the ring part 40 over a second inclined surface 51 towards the handling part 41 seen conically widened and attached to the second inclined surface 51 a second ring step 52 connects, through which the dimension of the ring part 40 reduced in the transverse direction Q. At the extreme end in the transverse direction Q, the second securing projection 50 have an edge. The in the transverse direction Q extreme end of the two securing projections 47 . 50 can lie on a common cylindrical surface.

Analogous to the first locking projection 47 and the second securing projection 50 could also further securing projections on the ring part 40 to be available. It is also possible to use the ring part 40 without executing such securing projections. Preferably, however, at least one securing projection is present.

The order 10 is as follows on a housing wall opening 13 assembled:
The spout 11 First, with the help of the holding means 35 in the housing wall opening 13 arranged. According to example, the mounting section 21 in the housing wall opening 13 plugged in and the retaining projections 36 on both axial sides of the edge 15 around the housing wall opening 13 arranged so that the edge 15 into the retaining recess 37 protrudes.

Following this, the circlip 12 from the free end 20 over the spout 11 moved, leaving the insertion end 45 of the ring part 40 the pocket opening 30 is facing. The pressing surface 44 points from the housing wall 14 path. From the spit 45 here is the ring part 40 through the pocket opening 30 through into the receiving bag 27 plugged in. Here is the outer dimension of the ring part 40 opposite the inner dimension of the outer wall 29 chosen so that the ring part 40 a directed away from the longitudinal axis L clamping force on the outer wall 29 generated and this against the edge 15 the housing wall 14 suppressed.

To effect this clamping force is the locking ring 12 or the ring part 40 compared to the material of the spout 11 rigidly executed or has an at least an order of magnitude higher elastic modulus, whereby the retaining ring 12 is capable of elastic deformation of the spout 11 or the outer wall 29 to reach and this against the edge 15 to press.

If one or more securing projections 47 . 50 are present, these can act much like barbs. The impressions of the ring part 40 in the receiving bag 27 is over the sloping surfaces 46 respectively. 51 allows while pulling out the circlip 12 through the edges on the securing projections 47 . 50 is difficult.

In the embodiment described here, the dimension of the handling ring 42 in the transverse direction Q chosen so that they at least the dimension of the immediately adjacent retaining projection 36 corresponds and preferably in the transverse direction Q via the retaining projection 36 protrudes. This protects the handling ring 42 the retaining projection 36 or the holding means 35 from damage. This is advantageous because of the holding means 35 and therefore the holding means 36 a sealing effect against the housing wall 14 is generated, which must not be damaged.

The dimension of the ring member between the handling ring 42 and the insertion end 45 in the axial direction A corresponds at least to the sum of the dimensions of the adjacent to the handling ring 42 arranged retaining projection 36 plus the retaining recess 37 in the axial direction A and is preferably larger. This ensures that over the ring part 40 a sufficient clamping effect on the outer wall 29 against the edge 15 is reached.

The spout 11 is cut off at the point where the inner dimensions correspond approximately to the outer dimensions of the cable or cable to be performed. On the outside 23 Clamps or other fasteners can be placed around the inside 22 the spout 11 after passing the cable or the cable against the line or against the cable to clamp and seal.

The invention an arrangement 10 having a spout 11 and a circlip 12 , The order 10 used for mounting the spout 11 in a housing wall opening 13 a housing wall 14 , There will also be a procedure for mounting the grommet 11 proposed. The spout 11 consists of elastically deformable material and has a mounting section 21 with a storage bag 27 , which in an axial direction A through a small-shaped pocket opening 28 is accessible. Outside on the spout 11 are around the receiving bag 27 around retaining projections 36 or other suitable holding means 35 present to the spout 11 with the housing wall opening 13 surrounding edge 15 the housing wall 14 sealing to connect. After inserting the spout 11 in the housing wall opening 13 becomes the circlip 12 through the pocket opening 28 in the receiving bag 27 put and secures the spout 11 in the housing wall opening 13 , Preferably, a sealing effect improving clamping force between an outer wall 29 the receiving bag 27 and the edge 15 the housing wall 14 through the circlip 12 generated. Because of the good sealing of the spout 11 on the housing wall 14 by the clamping action of the locking ring 12 becomes a high IP protection class, for example IP protection class 66 (Dustproof and protection against strong jet water) reached.

LIST OF REFERENCE NUMBERS

10

arrangement

11

spout

12

circlip

13

Housing wall opening

14

housing wall

15

edge

20

free end

21

mounting portion

22

Inside of the spout

23

Outside of the spout

27

receiving pocket

28

inner wall

29

outer wall

30

pocket opening

31

End portion of the spout

35

holding means

36

retaining projection

37

holding recess

40

ring part

41

handling part

42

handling ring

43

inner end of the handling ring

44

push surface

45

spigot

46

first inclined surface

47

first securing advantage

48

first ring step

50

second securing projection

51

second inclined surface

52

second ring step

A

axially

L

longitudinal axis

Q

transversely

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012002936 A1 [0003]
• DE 102011054294 A1 [0004]

Claims (13)

Arrangement ( 10 ) comprising a grommet ( 11 ) for mounting on a housing wall opening ( 13 ), as well as a retaining ring ( 12 ), whereby the grommet ( 11 ) consists of an elastically deformable material, wherein the spout ( 11 ) a mounting section ( 21 ), in which a receiving pocket ( 27 ), which via a pocket opening ( 28 ), the grommet ( 11 ) at the mounting section ( 21 ) a holding means ( 35 ), which in the region of the receiving pocket ( 27 ) on the outside of the grommet ( 11 ), and wherein the retaining ring ( 12 ) a handling part ( 41 ) and a ring part ( 20 ) and in in the housing wall opening ( 13 ) arranged spout ( 11 ) in the receiving bag ( 27 ) can be inserted. Arrangement according to claim 1, characterized in that the grommet ( 11 ) has a partially hollow cylindrical and / or hollow conical shape. Arrangement according to claim 1 or 2, characterized in that the receiving pocket ( 27 ) by an everted end portion ( 31 ) of the grommet ( 11 ) is formed. Arrangement according to one of the preceding claims, characterized in that the receiving pocket ( 27 ) an inner wall ( 28 ) and one the inner wall ( 28 ) surrounding outer wall ( 29 ) having. Arrangement according to one of the preceding claims, characterized in that the holding means ( 35 ) one in the assembly section ( 21 ) existing retaining recess ( 37 ) which is open to the outside and for receiving a housing wall opening ( 13 ) enclosing edge ( 15 ) the housing wall ( 14 ) is set up. Arrangement according to claim 5, characterized in that the retaining recess ( 37 ) between two retaining projections ( 36 ) formed by the mounting section ( 21 ) to the outside. Arrangement according to claim 5 or 6 and according to claim 4, characterized in that the retaining projections ( 36 ) from the outer wall ( 29 ) protrude. Arrangement according to one of the preceding claims, characterized in that the handling part ( 41 ) obliquely or at right angles to the ring part ( 40 ) is aligned. Arrangement according to one of the preceding claims, characterized in that the handling part ( 40 ) as a closed handling ring ( 42 ) is trained. Arrangement according to claim 9 and according to claim 6 or 7, characterized in that the handling ring ( 42 ) outwardly in a direction perpendicular to the ring part ( 40 ) has a dimension at least that of the adjacent retaining projection ( 36 ) corresponds. Method for assembling a grommet ( 11 ) on a housing wall opening ( 13 ), whereby the grommet ( 11 ) consists of an elastically deformable material and in a mounting section ( 21 ) a receiving bag ( 27 ), which via a pocket opening ( 28 ), and wherein the grommet ( 11 ) at the mounting section ( 21 ) a holding means ( 35 ), which in the region of the receiving pocket ( 27 ) on the outside of the grommet ( 11 ), comprising the following steps: - inserting the grommet ( 11 ) in the housing wall opening ( 13 ) and attaching the grommet ( 11 ) at which the housing wall opening ( 13 ) enclosing edge ( 15 ) a housing wall ( 14 ) by means of the holding means ( 35 ), - inserting a safety ring ( 12 ) in the receiving bag ( 27 ) through the pocket opening ( 28 ). Method according to claim 11, characterized in that the retaining ring ( 12 ) a clamping force between an outer wall (29) of the receiving pocket ( 27 ) and the housing wall opening ( 13 ) enclosing edge ( 15 ) generated. Method according to claim 11 or 12, the retaining ring ( 12 ) a pressing surface extending at right angles or obliquely to a pressing direction ( 44 ), by means of which it enters the receiving pocket ( 27 ) is pressed.

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