DE102007020556B3 - Connector for garden watering has sliding projections on inner wall of shell aligned with pairs of vertical flexible ribs - Google Patents

Abstract

The connector consists of a tubular body (50), an elastic holding part (70) and a shell (80). It has a number of has sliding projections (83) on the inner wall of the shell, aligned with pairs of vertical flexible ribs (712) on the elastic holding part, positioned so that when the shell is pressed down, the flexible ribs are deformed and create a reaction force enabling the projections to be pressed back instantly into their initial position when no external force is exerted on the shell.

Description

The The present invention relates to an improved fluid connector or connecting part for use in the garden, that is, a connecting piece consisting from a tubular body, a elastic holding part and a sleeve. The pipe body is with a number of holes each provided for accommodating a locking hook and the elastic holding part is circumferentially with several pairs of vertical equipped with flexible ribs, between which an expansion or Expander space is provided. On the inner wall of the sleeve is a number of sliding protrusions are provided, the re The vertical flexible ribs are each positioned so that when pressed down the sleeve the flexible ribs can forcibly deform and can absorb a reaction force, with which the sliding projections the sleeve immediately back pushed back to their original position can be if the sleeve free from an external force is. This makes the operation the sleeve Smoother and easier, without causing the elastic Holding part as in conventional Sticking due to deformation and fatigue in operation, if the sleeve pressed down becomes.

As in 22 is shown, the perspective view in exploded view, the components of a conventional connecting part. This includes a tubular body 10 , a locking ring, a sleeve 30 and an elastic holding part 40 , wherein the tubular body 10 has a tubular passage from end to end and a connecting pipe 11 from one end of the tubular body 10 extends to form a flange portion from. The other end of the connecting pipe 11 extends to the end of the tubular body 10 , wherein a number of attachment teeth 12 is arranged there and a holding or support flange 13 at the middle of the pipe body 10 located at the periphery of a limiting projection 131 is arranged. A number of axially extending and equally spaced guide channels or channels 14 located at the front section of the tubular body 10 each one having a pair of upstanding guard ribs 141 . 142 exhibit. At each guide channel 14 is a through hole 15 arranged and at the front end of the tubular body 10 there is a sealing flange 16 , The locking ring 20 which has a tapered-shape terminal end is engaged with the end of the tubular body 10 by means of thread-providing sections, so that the tapered end 21 of the locking ring 20 the clamping teeth 12 pressurized so that they hold an inserted hose or pipe in place. Moreover, the sleeve points 30 a number of stop blocks 31 on, which aligned with the inner wall with the through holes 15 of the tubular body 10 are arranged.

• 1. Das elastische Bauteil 43 des elastischen Halteteils 40 ist in Bogengestalt ausgeführt und kann unter Druck leicht deformiert werden, wie in 23 gezeigt ist, wenn die Hülse 30 durch einen Benutzer betätigt wird. Dies führt zu einer Verringerung der Elastizität und dem Verlust der Begrenzungsfunktion der Anschlagblöcke 31. So wird die Gesamtlebensdauer des Flüssigkeitsverbindungsteils unvermeidbar verkürzt.
• 2. Das elastische Bauteil 43 des elastischen, flexiblen Halteteils 40 hat Bogengestalt und die Verriegelungseinheit 42 bleibt in folge der ungleichmäßigen Kraftaufbringung leicht stecken, wenn die Hülse 30 betätigt wird, was das Ziehen und Drücken der Hülse 30 nicht glatt und unzweckmäßig macht.
• 3. Das Kupplungsrohr A kann sich leicht vom Eingriff mit der Verriegelungseinheit 42 lösen, solange die Hülse 30 nach unten gedrückt ist, und das Kupplungsrohr A kann durch Zufall bei großem Wasserdruck bei einem Sprengvorgang fortfliegen. So wird die den Sprenger bedienende Person angespritzt und wird durch Zufall nass.

Such a conventional construction of a connecting part has the following disadvantages in practice:

• 1. The elastic component 43 of the elastic holding part 40 is designed in bow shape and can be easily deformed under pressure, as in 23 shown when the sleeve 30 is operated by a user. This leads to a reduction of the elasticity and the loss of the limiting function of the stop blocks 31 , Thus, the overall life of the liquid connection part is inevitably shortened.
• 2. The elastic component 43 the elastic, flexible holding part 40 has arched shape and the locking unit 42 remains stuck as a result of uneven force application when the sleeve 30 is pressed, causing the pulling and pushing the sleeve 30 not smooth and impractical.
• 3. The coupling tube A can easily from engagement with the locking unit 42 Loosen as long as the sleeve 30 pushed down, and the coupling tube A can fly by chance at high water pressure in a blasting operation. So the person operating the sprinkler is injected and gets wet by accident.

Moreover, another published conventional connecting part which is in the U.S. Patent 7,021,669 is disclosed with a number of insert bodies 5 and in the coupling part 1 housed compression springs 3 fitted. Such a structure is relatively complicated and provided with comparatively many components, which makes the assembly difficult and time-consuming from an aspect and from another aspect makes the production and processing costs expensive.

Of the Invention is therefore the object of a connecting part for use in particular in the irrigation in the garden to create that it does not come to sticking or sticking parts and that can be used smoothly, where Production and installation cost-effective are. The connecting part should have good durability properties and the locking unit does not open undesirably.

These Task is by the invention in a connecting part with the Characteristics of claim 1 solved. Advantageous developments are the subject of the dependent claims.

An inventive connecting part, which is intended in particular for use in the garden, has a sleeve which is provided with a number of Sliding projections on the inner wall are provided, which cooperate with a plurality of pairs of vertical flexible ribs, which are arranged on the periphery of an elastic holding part, so that the expansion space of each pair of flexible ribs can provide a reaction force to push back each inserted sliding projection, so that of a external force released sleeve immediately resumes its initial position. With such a structure, as in the case of a conventional elastic holding member, it can be prevented from becoming stuck due to deformation and fatigue by the operation when the sleeve is pressurized downward. The operation of the fluid connection part thus becomes smoother in one aspect and the manufacturing and assembly costs of the fluid connection part can be effectively reduced in view of the economical production. Another aspect is the competitiveness in sales.

By the invention will further be an improved connector for use created in the garden, at its elastic holding part inner wall cavity sections from its retaining or supporting wall sections and stop surfaces and alignment cavities used by Zwangsspfosten or supports so that they are against the support or support blocks and the engagement blocks of the To push tube body to a double body support for the elastic holding part to provide this stronger and more durable even under great To make pressure, which is generated by the pressed down sleeve.

According to one Another embodiment of the invention is an improved connection part created for use in the garden, in which the sleeve at a number of guide posts or supports equipped, which are provided on the circumference on the inner wall, those with guide holes, sliding slopes, support posts and forced guidance posts cooperate with the elastic holding part so as to allow that every leader post the sleeve from every forced guidance post out along the slip slope slides to the stop post in each case and is limited in place there, without that he moves further down. In this way, the Sleeve firmly be limited on the spot and a coupling tube does not arrive immediately under water pressure from the fluid connection part disengaged, if the sleeve pressed down by chance will do what else that would be blasted water everywhere is splashed so that the people standing around get wet.

By the invention will further be an improved connector for use created in the garden, in which the engaging blocks of the tubular body to do so be used just with the alignment cavities of the abutment posts and the forced guidance post each of the elastic holding part to engage, whereby can be prevented that the elastic holding part together with the sleeve rotates, which controls the positioning of the sleeve in a more precise manner.

The Invention will continue in the following with reference to embodiments and the drawing. This representation is merely for illustrative purposes and is not intended to be limited to the invention restrict specifically specified combinations of features. It demonstrate:

1 a perspective view showing the components of the connecting part according to the invention in an exploded arrangement;

2 a partial perspective sectional view of a portion of the sleeve of the connecting part according to the invention;

3 a perspective view showing the assembly of the elastic holding part and the tubular body of the connecting part according to the invention;

4 a longitudinal sectional view of the connecting part according to the invention;

5 a longitudinal sectional view similar 4 but with the sleeve being shown pushed down;

6 a further sectional view of the arrangement of the connecting part according to the invention;

7 a sectional view similar 6 but with the sleeve being shown pushed down;

8th a perspective view of a connecting part according to the invention according to a further embodiment of the invention in an exploded view;

9 a perspective view of enlarged components of the representation of 8th ;

10 a partial sectional view of the sleeve, the elastic holding part and the tubular body of 9 ;

11 a partial perspective view of the elastic holding part of 9 ;

12 a perspective view illustrating the assembly of the elastic holding part and the tubular body of 9 shows;

13 a first sectional view showing the Assembly of the sleeve and the elastic holding part of 9 shows;

14 a second sectional view of the arrangement of 9 ;

15 a third sectional view of the arrangement of 9 ;

16 a sectional view showing the sleeve of 9 pressed down;

17 another sectional view showing the sleeve of 9 in down-pressed representation shows;

18 a sectional view showing the guide posts of 9 shows as they slide along the sliding slopes of the elastic holding part;

19 a sectional view showing the guide posts of the sleeve of 9 shows when they slide along the sliding slopes of the elastic holding part and stopped in place;

20 a fourth sectional view of the connecting part of 9 ;

21 a sectional view showing the sleeve of 20 in down-pressed representation shows;

22 an exploded view of a conventional connection part according to the prior art; and

23 a representation of the elastic holding part of the connecting part of 22 in the engaged position when the sleeve is pushed down.

in the The following are preferred embodiments the invention described with reference to the drawing.

It is going on first 1 Reference is made, which is a perspective exploded view of a connecting part. At the same time will open 2 Referenced. The connecting part consists of a tubular body 50 , a tightening ring 60 , an elastic holding part 70 and a sleeve 80 , The pipe body 50 has a flow passage 51 with open end for the passage of a flow. At the end of the tubular body 50 is disposed an externally threaded portion having a number of axially extending and circumferentially arranged flexible clamping teeth 52 has, which are provided directly adjacent to this, so that the one provided on the inside, tapered portion 61 having clamping ring 60 can interact with these to hold a hose in place. At the upper end of the tubular body 50 is a number of sealing flanges 53 arranged on the circumference. At the middle of the pipe body 50 is a flat peripheral region or flange collar 54 provided above which a number of holes 55 is located, at their side in each case a vertical boundary rib 551 located. Between every two holes 55 is a horizontal stop rib 552 arranged.

The elastic holding part 70 is made of plastic in its entirety, with a circular ring seat 71 of which there are a number of central locking hooks 711 according to the holes 55 of the tubular body 50 extends upwards. A pair of vertical flexible ribs 712 between which an expansion space 713 is provided is next each locking hook 711 or arranged in an alternating manner. Every locking hook 711 is in the downward direction with an arcuate baking or evading portion 714 and a holding or supporting portion 715 in connection.

The sleeve 80 is on the perimeter with a number of stop blocks 81 and holding teeth 82 each provided in conjunction with a sliding projection 83 opposite the room 713 located and an arcuate guide surface 831 on the inner wall according to the holes 55 and the sealing flange 53 of the tubular body 50 exhibit. The Y-shaped sliding projection 83 has a pair of fork sections, each with the smooth guide surface 831 are provided.

As in 3 and 4 is shown, the locking hooks during assembly 711 of the elastic holding part 70 First of all, so directed and pushed, so they with the holes 55 from one end of the tubular body 50 Engage from the entire way down until the circular ring 71 in abutment against the supporting peripheral region or the flange collar 54 passes, which causes the locking hooks 711 just with the holes 55 align and between the vertical boundary ribs 551 are each limited in such a way that the vertical ribs 712 just in plant against the horizontal stop ribs 552 reach.

Then the stop blocks 81 the sleeve 80 in line with the holes 55 brought it to the sleeve 80 to allow that tube body 50 in it with the holding teeth 82 flexible in adjustment with the inside of the sealing flanges 53 passes so that the sliding protrusions 83 just against the tips of the flexible ribs 712 and opposite to the widening space 713 nudge. The locking hooks 711 that the abutment of the stop blocks 81 are subject, stuck in the Flow passage 51 into it to clamp a connection hose (not shown in the drawing) in position.

If the sleeve 80 pressed down as in 5 shown, drives the guide surface 831 the sliding projections 83 the vertical flexible ribs 712 automatically or pressurized these, so that they sideways along the horizontal stop ribs 552 move and in alignment with the expansion space 713 fall. At the same time the stop blocks are moving 81 in the concave evasion section 714 down to the locking hooks 711 from the stop of the stop blocks 81 free. Meanwhile, a connecting tube (not shown) may selectively flow from the flow passage 51 of the tubular body 50 removed or engaged with this. Once the sleeve 80 free of any sliding pressure or shock, the vertical flexible ribs obtain 712 that are of concern to the sliding protrusions 83 are free, then their flexibility along the guide surface 831 again, so she immediately the sleeve 80 push up so that it resumes its position. This makes the operation simpler and smoother, and can prevent the elastic pieces from getting stuck as in the conventional joint due to deformation and elastic fatigue when the sleeve is subjected to a pressing or pressing force. The operation is kept constant in an ideal condition and cost of using and installing springs is improved, which, from an economical point of view, improves the manufacture of the connecting parts and makes the product more competitive on the market.

As shown with reference to a further modified embodiment, in this case the sliding projections 83 ' the sleeve 80 with an arcuate guide surface 831 ' provided, which is narrower from bottom to top, so that when the sleeve 80 pressed down, two flexible ribs 712 along the stop ribs 552 and also below the border of the guiding surface 831 ' move and be forced to expand 713 to bend and through the guide surface 831 ' be withheld. Once the sleeve 80 is free from pressurization, the flexible ribs 712 from the connection with the guide surface 831 ' released and fast back out and push the sleeve 80 immediately up to another functional state.

It is on the perspective view of 8th Reference is made, which illustrates in Auseinadergezender representation of the components of a further embodiment of the connecting part according to the present invention, and also on 9 to 11 Referenced. The pipe body 50 is in this embodiment with a number of support or support blocks 56 in linear alignment with the holes 55 provided, which are located just above it. On each side of a holding block 56 is an intervention block 561 arranged, and one on each side of the hole 55 arranged stop block is just between a holding block 56 and an intervention block 551 each arranged. Under each alternate section 714 of the elastic holding part 70 there is a retaining or supporting wall 72 , on the inside of which a cavity section 721 which is in alignment with a holding block 56 is positioned in each case. On the right side of the retaining or supporting wall 72 extends a stop post 722 upward, which is provided in inverted L-shape, and on the left side there is a spaced-apart retaining post 73 to a guide opening 74 to build. The stop post 722 and the retaining post 73 are aligned with each other and are aligned with an alignment cavity 7221 respectively. 731 Mistake. A slip slope 723 at the stop post 722 begins and to the guide opening 74 runs, is at a lower level of the retaining wall 72 intended. The alternate section 714 of the locking hook 711 starts from the inside of the slide bevel and extends upwards.

The stop blocks 81 the sleeve 80 have a smoothly sloping surface that slopes down in conjunction with a curved contact plane 811 extend. At the bottom of each stop block 81 There is a vertical guide post or bar 84 in alignment with the guide opening 74 of the elastic holding part 70 , The sliding projection 83 has a pair of smoothly crafted executive corners 831 at the bottom.

It will open 12 to 15 Referenced. The locking hooks 711 of the elastic holding part 70 Be the first in alignment with the holes 55 of the tubular body 50 arranged so that the elastic holding part 70 in engagement with the tubular body 50 can be brought from one end thereof, wherein the circular ring 71 in contact with the supporting peripheral portion 54 lies. In this way are the locking hooks 711 just in locking engagement with the holes 55 and are of two boundary ribs 551 enclosed on both sides or limited by these. The cavity section 721 on the inside of each retaining and supporting wall 72 Leans straight against the support blocks 56 to intentionally build a reinforced mount. Meanwhile, the intervention block 561 on two sides, the stop post 722 and the alignment cavity 7221 and the alignment cavity 731 each retaining post 73 alternately engaged with each other to mount on a bracket assemble, which causes the elastic holding part 70 actually works as a control and positioning component. Then the stop blocks 81 the sleeve 80 in alignment with the blocks 55 strung to allow it, that of the tubular body 50 in engagement with the sleeve 80 is brought or pressed, wherein the holding teeth 82 elastic with the inside of the sealing flanges 53 are engaged. So are the Schiebevorsprünge 83 just in abutment against the top of the vertical flexible ribs 712 and opposite the expansion space 713 and the guide posts 84 are just opposite the guide opening 74 and are through the posting post 722 limited. The locking hooks 711 are subject to the concerns of the contact levels 811 the stop blocks 81 and stuck in the flow passage 51 of the tubular body 50 in to clamp a connection hose (not shown in the drawings) in place.

If the guide posts 84 the sleeve 80 along the guide opening 74 the elastic holder 70 pressed down as in 16 and 17 is shown, then push the leadership corners 831 the sliding projections 83 the vertical flexible ribs 712 to the side and slide into the expansion spaces 713 in each case, and at the same time the stop blocks 81 pressurized so that they enter the escape section section 714 move down to the locking hooks 711 free from the concern of the contact levels 811 bring to. Now, a connecting hose in the flow passage 51 of the tubular body 50 be inserted or removed from this. Once the sleeve 80 is released from a pressurization, then generate the concerns of Schiebungsvorsprünge 83 free vertical flexible ribs 712 a reaction force along the guide corners 831 to the guide posts 84 and the stop blocks 81 push the sleeve upwards so that they return to their original position. Such a mechanism makes the operation smoother and easier. It can prevent the elastic parts from getting stuck in operation due to deformation and elastic fatigue when the sleeve is pushed down, as in the case of a conventional connecting part. Moreover, makes the elastic holding part 70 from the inner cavity section 721 Use, and the stop surface 722 every retaining wall 72 and the alignment cavity 7221 and 731 each holding post 73 are each through the holding block 56 or the intervention block 561 held, so that reinforced brackets and supports are obtained when the sleeve 80 is subjected to a downward sliding movement, resulting in that the elastic holding part 70 is constructed and durable and subject to greater force without slight damage. Also, the manufacturing costs are reduced by the elimination of spring components and assembly work is saved, whereby the product according to the invention is more competitive in the market.

As in 18 and 19 is shown moves when blasting water of the guide posts 84 from the retaining post 73 out along the slip slope 723 to the stop surface 722 , and then the sleeve 80 do not continue to be pushed down and will be in position using the retention function of the guide posts 84 and the stop surface 722 held. In such a way, the sleeve 80 During operation, it is not pressed down by chance, so that a connecting hose is prevented from being disengaged immediately in the event of high water pressure, whereupon standing persons would be splashed wet. At the same time are the intervention blocks 561 of the tubular body 50 with the alignment cavity 7221 and 731 each holding post 73 engaged, so that prevents the elastic holding part 70 along with the quick rotation of the sleeve 80 turns, which leads to a closer control and attachment.

It will open 20 and 21 Referenced. The sleeve 80 has an arcuate sliding projection 83 ' on, its guide surface 831 ' narrower from the bottom up. If the sleeve 80 is pushed down, then move two vertical flexible ribs 712 along the guide surface 831 ' and are bent so that they are in the expansion space 713 fit, and they are through the guide surface 831 ' limited. Once the sleeve 80 free of an applied force, then generate the two in each expansion space 713 limited flexible ribs 712 a reaction force so that they expand outward to momentarily push the sleeve upwards, so that it takes another function mode again.

The invention may be summarized as follows: It relates to an improved connector for use in irrigating the garden. This consists of a tubular body, an elastic holding part and a sleeve. The tubular body is provided with a number of holes for accommodating a locking hook, respectively, and the elastic retaining part is provided at the circumference with a plurality of pairs of vertical flexible ribs with an expansion space therebetween. On the inner wall of the sleeve a number of sliding projections are provided, which are respectively positioned with respect to the vertical flexible ribs, so that upon depression of the sleeve down the flexible ribs can be made to deform and generate a reaction force the sliding projections of the sleeve can momentarily push back to its initial position when the sleeve is free of an external force, which results in the operation of the sleeve being smoother and is simpler without causing the elastic holding part to get stuck as a result of deformation and fatigue in operation, as in a conventional fluid connection part, when the sleeve is pushed down.

Claims (13)

Connecting part, in particular for use in irrigation in gardens, comprising a tubular body ( 50 ), an elastic holding part ( 70 ) and a sleeve ( 80 ), wherein the tubular body ( 50 ) with a number of holes ( 55 ) for accommodating a locking hook ( 711 ) of the elastic holding part ( 70 ) is equipped in each case and the elastic holding part ( 70 ) at the periphery with several pairs of vertical flexible ribs ( 712 ) with an expansion space ( 713 ) is provided; wherein on the inner wall of the sleeve ( 80 ) a number of sliding protrusions ( 83 ) aligned with the pairs of vertical flexible ribs ( 712 ) are respectively positioned so that when the sleeve ( 80 ) is pushed down, the pairs of flexible ribs ( 712 ) can be pushed down so that they deform and generate a reaction force which, upon release of the sleeve (FIG. 80 ) from an external force the sliding projections ( 83 ) of the sleeve ( 80 ) back to the starting position. Connecting part according to claim 1, characterized in that on the inner wall of the sleeve ( 80 ) provided sliding projections ( 83 ) with an arcuate guide surface ( 831 ) on each side to allow each slide projection ( 83 ) smooth the pairwise provided vertical flexible ribs ( 712 ) push outwards when each sliding projection ( 83 ) in engagement with the expansion space ( 713 ) is located. Connecting part according to claim 1, characterized in that each sliding projection ( 83 ) in Y-shape to allow each slide projection (FIG. 83 ) of the sleeve ( 80 ) the pairs of flexible ribs ( 712 ) brings to the outside to the expansion. Connecting part according to claim 1, characterized in that at the lower end of each sliding projection ( 83 ) of the sleeve ( 80 ) an arcuate shape having guide surface ( 831 ' ) becomes narrower from the bottom up so that when the sleeve ( 80 ) is pressed down, each pair of flexible ribs ( 712 ) move inwardly below the boundary of the sheet guide or toward each other and are retained by the guide surface. Connecting part according to claim 1, characterized in that the locking hooks ( 711 ) connected to the elastic holding part ( 70 ) and alternately between two pairs of vertical flexible ribs ( 712 ) are arranged. Connecting part according to claim 5, characterized in that each locking hook ( 711 ) of the elastic holding part ( 70 ) in connection with a bow-shaped holding portion ( 831 ), wherein at this an escape section ( 714 ) is provided. Connecting part according to claim 1, characterized in that the elastic retaining part ( 70 ) at the periphery with a number of flat retaining or supporting walls ( 72 ) which alternately between the pairs of flexible ribs ( 712 ) are arranged; on the right side of each retaining wall ( 72 ) a stop post ( 722 ) extends upwardly and at its left side a spaced-apart retaining post ( 73 ) is arranged around a guide opening ( 74 ) to build; the stop post ( 722 ) and retaining posts ( 73 ) are aligned with each other and with an alignment cavity ( 7221 ) are each provided, one of which from the stop post ( 722 ) to the guide opening ( 74 ) extending slip slope ( 723 ) at a lower height on the retaining wall ( 72 ) is provided; on the inner wall of the sleeve ( 80 ) at the periphery a number of guide posts ( 84 ), which are opposite the guide openings ( 74 ) are respectively positioned to allow the guide posts ( 84 ) along the guide openings ( 74 ), and the guide posts ( 84 ) of the sleeve ( 80 ) along the sliding slopes ( 723 ) can each slide and in place by the stop posts ( 722 ) are stopped at the end, causing the sleeve ( 80 ) can not be pushed down to cause the locking hooks ( 711 ) with the holes ( 55 ) of the tubular body ( 50 ) engage. Connecting part according to claim 7, characterized in that the stop post ( 722 ) is executed in a reverse L-shape. Connecting part according to claim 7, characterized in that the tubular body ( 50 ) at the periphery with a number of holding blocks ( 56 ), each under the holes ( 55 ) are arranged. Connecting part according to claim 7, characterized in that an alignment cavity on the inside of each stop post ( 722 ) and holding post ( 73 ) of the elastic holding part ( 70 ) is arranged on the tubular body ( 50 ) a number of intervention blocks ( 561 ) mating with the alignment cavities ( 7221 ) the stop post ( 722 ) or the retention post ( 73 ) is arranged for engagement and holding purposes. Connecting part according to claim 7, characterized in that the tubular body ( 50 ) at the Um start with holding blocks ( 56 ), each under one of the holes ( 55 ) are arranged on each side of the holding block ( 56 ) a vertical intervention block ( 551 ) is arranged; and the elastic holding part ( 70 ) a number of retaining walls ( 72 ), each having an inner cavity portion provided thereon ( 721 ), with which each holding block ( 56 ) of the tubular body ( 50 ) is engaged; each stop post ( 722 ) and retaining posts ( 73 ) of the elastic's holding part ( 70 ) with an alignment cavity ( 7221 ) is provided on the tubular body ( 50 ) a number of intervention blocks ( 561 ) in alignment with the alignment cavities of the abutment posts ( 722 ) and the retaining post ( 73 ) is respectively for engagement and support purposes. Connecting part according to claim 7, characterized in that each of the locking hooks ( 711 ) of the elastic holding part ( 70 ) integrally from an inner side of each slip slope ( 723 ) extends. Connecting part according to claim 7, characterized in that each locking hook ( 711 ) of the elastic holding part ( 70 ) integral from an inner side of each slip slope ( 723 ) extends to an arcuate evasion section ( 714 ) to build.