EP2361194A1

EP2361194A1 - Hydraulic and/or pneumatic device and hydraulic and/or pneumatic system

Info

Publication number: EP2361194A1
Application number: EP08735750A
Authority: EP
Inventors: Patrick Foussier; Andreas Wehrle
Original assignee: Wilhelm Karmann GmbH
Current assignee: Wilhelm Karmann GmbH
Priority date: 2007-05-16
Filing date: 2008-04-03
Publication date: 2011-08-31
Also published as: DE102007023160A1; WO2008138678A1

Abstract

The invention relates to a hydraulic and/or pneumatic device (1) comprising a valve block (2) having a closing device (3) for locking at least one hose nipple (4, 5) on the valve block (2). According to the invention, the closing device (3) comprises at least one sliding element (12, 13) that can be moved between an opening position opening the hose nipple (4, 5) and a locking position locking the hose nipple (4, 5). The invention further relates to a hydraulic and/or pneumatic system.

Description

description

title

Hydraulic and / or pneumatic device and hydraulic and / or

pneumatic system

State of the art

The invention relates to a hydraulic and / or

Pneumatic device according to the preamble of claim 1 and a hydraulic and / or pneumatic system according to claim 9.

In particular, in the automotive industry, u.a. for minimizing the installation space, the valves associated with a control system are combined in a valve block. Such valve blocks are for example part of hydraulic brake systems, ABS or ESP facilities. In the valve block connecting channels for fixing a plurality of hose nipples are introduced, wherein the connection channels are provided in the known from DE 39 07 233 Al valve block end with an internal thread for locking the equipped with an external thread hose nipple. The hose nipples, in turn, serve for fastening supply and / or discharge hoses. The locking of the hose nipple to the valve block by screwing is on the one hand time consuming and on the other hand, the connection channels must be arranged such that the hose nipple, especially when it comes to so-called L-shaped F-mandrel nipples do not interfere with each other when screwing , Furthermore, it is disadvantageous that the locking of each individual hose nipple must be done individually. In addition, a rotation of the hose nipple in the (axial) locking position is not possible.

From the technical field of Hochdruckschlauchver-compounds, it is known hose nipple on a sleeve by means of a lock positive connection, wherein the positive connection is made by engaging behind a circumferential groove of the hose nipple by means of a coupling bracket. Such a high-pressure connector is described for example in DE 202 19 782 Ul. This Arretierweise is not transferable to valve blocks or only with great effort, since for each hose nipple own clutch clip and a corresponding recess would have to be provided in the valve block for each coupling bracket. In addition, the brackets could be lost during assembly or disassembly, which will bring significant safety problems in the automotive sector.

Disclosure of the invention

Technical task

The invention is therefore based on the object to propose a hydraulic and / or pneumatic device, the valve block has a closure device, the locking of at least one hose nipple, preferably several hose nipple simultaneously allows in a simple and secure manner. Furthermore, the object is to propose a correspondingly optimized hydraulic and / or pneumatic system.

Technical solution

This object is achieved with regard to the hydraulic and / or pneumatic device having the features of claim 1 and with regard to the hydraulic and / or pneumatic system having the features of claim 10. Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features specified in the description, the drawings and / or the figures also fall within the scope of the invention.

The invention is based on the idea to provide at least one displacement element which is between a hose nipple releasing opening position and the hose nipple arresting locking position is adjustable. Preferably, the displacement element locks the at least one hose nipple by producing a positive connection. The locking should advantageously be such that the hose nipple is locked exclusively in the axial direction, that is secured against pulling or against by hydraulic or pneumatic pressure squeezing out of a connection channel of the valve block, so that a rotation of the hose nipple even in the locked state is possible. Preferred is an embodiment in which a plurality of hose nipples can be locked simultaneously with a displacement element. On a lock by screwing can be dispensed with advantageously due to the provision of a sliding element, so that the at least one hose nipple for locking does not have to be twisted consuming. Due to the omission of a screw lock several hose nipple during locking, so when moving the sliding element in its locking position can not interfere with each other. In addition, the locking can be done much faster than in the prior art, especially when several hose nipple can be locked simultaneously by means of the displacement element. In addition, the at least one hose nipple can be dismantled in a simple manner and faster than in the prior art again. For this it is only necessary, the sliding element back into his

To move open position. A wrench is this not required in contrast to the prior art.

In a further development of the invention is advantageously provided that the displacement element is held captive. This is particularly advantageous from a safety point of view if the hydraulic and / or pneumatic device is used in a motor vehicle.

To prevent inadvertent release of the generally under high pressure medium (gas or liquid) acted upon hose nipple of the valve block, is according to a advantageous embodiment of the invention provides that the displacement element can be locked in its the at least one hose nipple arresting in the axial direction locking position. Preferably, the locking mechanism is designed such that the locking of the sliding element takes place automatically when the sliding element is transferred to its locking position. Preferably, a locking mechanism is provided as a locking mechanism. For example, a resilient extension can be provided on the displacement element, which engages in a receiving opening on the valve block or on a further component of the closure device as soon as the locking position has been reached. A back adjustment of the displacement element in its open position is preferably only after, in particular manual, release (pushing out) of this extension from the extension receiving receiving opening possible.

Of particular advantage is an embodiment in which the closure device of the hydraulic and / or pneumatic device has at least one fixed to the valve block, so fixed to this or integrally formed therewith plate, which is provided with at least one plate opening for the passage of the hose nipple. The plate opening must be arranged such that it is aligned with the connection channel for the hose nipple. The plate opening must therefore be located above the opening of the connection channel, so that the

Hose nipple can be inserted through the plate opening into the connection channel. Preferably, a plurality of plate openings are provided in the plate to allow the insertion of a plurality of hose nipple into the valve block.

The plate preferably cooperates with the at least one displacement element such that a large diameter portion of a displacement element opening in the open position of the displacement element is aligned with the plate opening in the at least one plate, so that a hose nipple through the large

Diameter section of the sliding element opening and can be inserted through the plate opening in the connection channel. The Cross-sectional contour of the large diameter portion of the sliding element opening and the cross-sectional contour of the plate opening must be such that the hose nipple can be passed through these openings. Preferably, the contour of the openings corresponds to the maximum

Circumferential contour of the hose nipple plus a game. In the locking position, the large diameter section of the sliding element opening is then no longer aligned with the plate opening, but rather a small diameter section of the sliding element opening is aligned with the plate opening. The small diameter portion is formed so that a withdrawal of the hose nipple is prevented from the connection channel, the hose nipple is thus locked in the valve block. Preferably, the hose nipple is rotatable even in its locked position in the circumferential direction, possibly a

Anti-rotation can be provided. Preferably, the displacement element comprises a plurality of sliding element openings each having a large diameter portion and a small diameter portion immediately adjacent thereto, so that the locking of several hose nipple with a displacement element is simultaneously possible.

There are various possibilities for shaping and arranging the at least one displacement element opening. On the one hand, it is conceivable to arrange the displacement element opening at the edge, so that the displacement element opening, in particular with the large diameter section, is open at the edge. Likewise, it is conceivable to contour the sliding element opening circumferentially closed, that is to be arranged with edge distance from the peripheral edge of the displacement element.

To limit the adjustment of the displacement element and thus to realize a captive mounting of the displacement element on the plate and / or on the valve block fertilizer in further development of the invention is provided that at least two stops are provided for the displacement element on the plate or the valve block. Of particular advantage is an embodiment in which the displacement element is received between the plate and the valve block. Preferably, the displacement element is held captive on the plate fixed to the valve block, preferably by two axial stops. The sliding element is then adjustable like a drawer between its open position and its locking pitch.

In order to be able to adjust the displacement element comfortably, the displacement element advantageously projects out of the gap between the plate and the valve block, preferably with an angled section for gripping the displacement element.

The invention further relates to a hydraulic and / or pneumatic system, in particular for motor vehicles, with a hydraulic and / or pneumatic device described above and at least one, preferably a plurality, in particular identical hose nipples. Preferably, L-shaped hose nipples, preferably so-called F-mandrel nipples are used.

In order to realize by means of the displacement element, in particular a positive locking of the hose nipple, the hose nipple is advantageously provided with a projection, for example a circumferential collar, or an undercut, for example a circumferential groove. In this case, the projection may abut, for example, on the displacement element in the locking position or the undercut may be penetrated by the displacement element in the locking position or be engaged behind to ensure a secure locking.

Brief description of the drawings

Further advantages, features and details of the invention will become apparent from the following description

Embodiments and with reference to the drawings. These show in: Fig. 1: a plan view of a hydraulic and / or

Pneumatic device with several so-called F-mandrel hose nipples,

2 is a sectional view in section along the section line B - B of FIG. 1,

3 is a representation of a locking device with two each located in a locking position displacement elements,

4 shows a plate of the locking device for fixing to a valve block,

Fig. 5: a locking element of FIG. 3 in isolation and

6 shows another locking element according to FIG. 3 in FIG

Unique.

Embodiments of the invention

In the figures, the same components and components with the same function with the same reference numerals.

In Fig. 1, a hydraulic system with a hydraulic device 1 is shown. The hydraulic device 1 is part of an ABS system, not shown in a motor vehicle. The hydraulic device comprises a valve block 2 shown in plan view with a closure device 3 for locking two groups of hose nipples 4, 5. The hose nipples 4, 5 serve to fix a respective hose (not shown) at its respective free end 6, 7.

The closure device 3 comprises a cross-sectionally L-shaped

Plate 8 made of metal with a thickness of about 5 mm. The plate 8 is firmly connected to the valve block 2 by means of fixing screws 9. the. In the plate 8, two groups of identical plate openings 10, 11 are introduced with a circular cross-section. The plate openings 10, 11 are used for insertion and for receiving the hose nipple 4, 5.

Between the plate 8 and the valve block 2, two displacement elements 12, 13 slidably received with a thickness of about 0.5 mm, wherein the displacement elements 12, 13, the plate 8 and the valve block 2 laterally, in the drawing plane down, projecting beyond so that the displacement elements 12, 13 of

Hand can be moved. The arranged in the right half of the drawing displacement element 12 serves to lock or locking the first group of hose nipples 4, whereas the second displacement element 13 serves to lock the second group of hose nipples 5. For this purpose, the displacement elements 12, 13 between an opening position to be explained later and a locking position also to be explained later on adjustable. Even in the case of hose nipples 4, 5 removed from the valve block 2, the displacement elements 12, 13 can not be completely pulled out of the gap formed between the plate 8 and the valve block 2. The displacement elements 12, 13 are held captive on the plate 8.

2 shows a partial view of a section along the section line B-B according to FIG. 1. The L-shaped contoured plate 8 can be seen with a short, rectangular side section 14 and a rectangular rectangular ceiling section 15 arranged at right angles thereto. The displacement elements 12, 13 are received in an axially displaceable manner between the ceiling section 15 and the valve block 2. In Fig. 2, only the second displacement element

13 for locking the second group of hose nipples 5 shown.

The hose nipples 4, 5 protrude into vertical connection channels 16 into the valve block 2. In this case, the hose nipples 4, 5 are enclosed within the connection channels 16 by a respective sealing ring 17 and a support ring 18. Each support ring 16 is between one of the sealing rings 17 and a peripheral collar 19 of the respective hose nipple 4, 5 arranged. Each circumferential collar 19 forms the largest diameter region of each hose nipple 4, 5 within the associated connection channel 16. The plate openings 10, 11 therefore have the diameter of a circumferential collar 19 plus a game. In the locked position prevent the

Displacement elements 12, 13 a movement of the hose nipple 4, 5 in the axial direction of the valve block 2 out.

The construction of the closure device 3 is shown in detail in a view from below in FIG. Evident is the plate 8 with its side portion 14 and the perpendicular thereto extending ceiling portion 15. In the side portion 14 and in the ceiling portion 15 receiving holes 20 for receiving the fixing screws 9 shown in Fig. 1 are introduced. Evident is the L-shaped contour of the two displacement elements 12, 13, wherein in each case an angled by 90 ° gripping portion 21, 22 for manually moving the displacement elements 12, 13 is used.

As can be seen from Fig. 4, recesses 24, 25 for leading receiving the displacement elements 12, 13 are introduced into the underside 23 of the ceiling portion 15 of the plate 8 shown in the drawing plane above. Within the first recess 24 associated with the first recess 24 is a raised ridge

26 with lateral stop pockets 27, in each of which a lateral extension 28 of the first displacement element 12 (see FIG. 5 and FIG. 3) engages. The side boundary of the bumpers

27 forms stops for the extension 28 and thus for the first displacement element 12, which is held captive in this way within the gap between the plate 8 and the ceiling portion 15 and the valve block 2.

As is further apparent from Fig. 5, a total of five sliding element openings 29 are introduced into the first displacement element 12, wherein only the lower in the drawing plane Verschiebeelementöffnungen 29 edge open and the remaining sliding element openings 29 are circumferentially closed. All sliding element openings 29 have a large Diameter section 30 and an adjacent small diameter portion 31. In an open position of the first displacement element 12, the large diameter sections 30, the diameter of which corresponds at least approximately to the diameter of the plate openings 10, are aligned with the plate openings 10 and the connection channels 16. In this position, the first group of hose nipples 4 can be inserted or removed. If the first displacement element 12 is adjusted with inserted hose nipples 4 in the locking position shown in Fig. 3, engage behind the small diameter portions 31, the

Diameter is smaller than the diameter of the circumferential collars 19, the circumferential collars 19 of the first group of hose nipples 4, whereby the first group of hose nipples 4 is locked to the valve block 2 and can not be removed in the axial direction. However, twisting in the circumferential direction is still possible.

In the locking position, the first displacement element 12 is automatically locked. For this purpose, the first displacement element 12 has a resiliently in the direction of the valve block 2 extension 32 (see FIG. 5), which adjusts upon reaching the locking position in the receiving opening 33 shown in Fig. 4 in the ceiling portion 15 of the plate 8. Only by pressing down the extension 32 from the top 34 shown in FIG. 1 of the plate 8, the lock is released and the first sliding element 12 can be moved back to its open position.

As is apparent from Fig. 6, the second displacement element 13 is constructed analogously. In the second displacement member 13, a plurality (nine) of sliding element openings 35 each having a large diameter portion 36 and a small diameter portion 37 are shown. A part of the sliding element openings 35 is open at the edge, whereas another part of the sliding element openings 35 is formed circumferentially closed. Also, the second displacement element 13 has a resilient extension 38 for locking the second displacement element 13 in its locking position. To the second displacement element 13th To keep captive, within the recess 25 (see FIG. 4) an elevated web 39 is provided, which passes through an opening 40 in the second displacement element 13. The web 39 simultaneously forms two stops for identifying the locking and the open position of the second displacement element 13th

Claims

claims

Hydraulic and / or pneumatic device, comprising a valve block (2) with a closure device (3) for locking at least one hose nipple (4, 5) on the valve block (2), characterized in that the closure device (3) at least one sliding element (12, 13), which is adjustable between a hose nipple (4, 5) releasing the open position and the hose nipple (4, 5) locking locking position.

2. Hydraulic and / or pneumatic device according to claim 1, characterized in that the displacement element (12, 13) is held captive.

3. Hydraulic and / or pneumatic device according to one of claims 1 or 2, characterized in that the displacement element (12, 13) in its locking position, preferably automatically, in particular by means of a latching mechanism, can be locked.

4. Hydraulic and / or pneumatic device according to one of the preceding claims, characterized in that the closure device (3) at least one of the valve block (2) fixed plate (8) with at least one, preferably circular, plate opening (10, 11) for By inserting the hose nipple (4, 5), which is aligned with a connection channel (16) in the valve block (2).

5. Hydraulic and / or pneumatic device according to claim 4, characterized in that in the displacement element (12, 13) at least one sliding element opening (29, 35) is provided, which has a large diameter portion (30, 36) for the passage of the hose nipple (4 , 5) and a small diameter section (31, 37) for locking the hose nipple (4, 5), wherein in the open position, the large diameter portion (30, 36) with the plate opening (10, 11) is aligned and in the

Locking position of the small diameter portion (31, 37) with the plate opening (10, 11) is aligned.

6. Hydraulic and / or pneumatic device according to claim 5, characterized in that the displacement element opening (29, 35) is circumferentially closed or edge-open.

7. Hydraulic and / or pneumatic device according to one of the preceding claims, characterized in that two stops on the plate (8) or the valve block (2) for limiting the displacement movement of the displacement element (12, 13), in particular in the opening and Locking position, are provided.

8. Hydraulic and / or pneumatic device according to one of claims 4 to 7, characterized in that the displacement element (12, 13) between the plate (8) and the valve block (2) is arranged.

9. hydraulic and / or pneumatic system with a hydraulic and / or pneumatic device (1) according to one of the preceding claims and at least one hose nipple (4, 5).

10. Hydraulic and / or pneumatic system according to claim 9, characterized in that the hose nipple (4, 5) has a projection or an undercut, in particular a circumferential groove, for producing a positive connection with the displacement element (12, 13) in its locking position.