housing

Abstract

The invention relates to a housing comprising - a housing body (100) with an opening in the upper part and two mutually opposite side walls (110) which laterally delimit the opening with their upper edges, the inner side of the side walls each having a longitudinally extending cover guide slot (120) close to the upper edge, and - a plate-like cover (200) with a laterally, longitudinally extending guide edge (210), the cover being movably supported on the housing body by the guide edge being fitted into the cover guide slot (120) of the housing body (100). The invention is characterized in that the housing body (100) carries a peg (500) oriented parallel to the cover guide slot (120) at the outer side of one of the side walls (110) and the cover (200) carries a sleeve (222) oriented coaxially to the peg (500) fixed on a tongue (220) overhanging the corresponding side wall upper edge of the housing body (100), the sleeve surrounding the peg (500) in such a way that a sliding bearing capable of axial and rotational movement is formed.

Description

TECHNICAL FIELD

[0001] The invention relates to a housing comprising

[0002] a housing body with an opening in the upper region and two mutually opposite side walls which laterally delimit the opening with their upper edges, the inner sides of the side walls each having a longitudinally extending cover guide groove near the upper edge, and

[0003] a plate-like cover with a laterally and longitudinally extending guide edge, which cover is movably supported on the housing body by the guide edge being fitted into the cover guide groove of the housing body. BACKGROUND

[0004] Such a housing with a push-pull cover is known to the person skilled in the art from a wide variety of application areas. CH 43 6076 A, for example, discloses a game box which is constructed in this way. AT 24 81 46 B1 discloses the same push-pull cover principle in a so-called slide box, that is to say a storage box for slides. Finally, DE 93 030 33 U1 discloses a device for the warming of dishes, the main body and the support plate above it likewise being illustrative of a generic housing.

[0005] This construction form of a housing with a push-pull cover has particular advantages in the context of the application, which is particularly preferred even within the scope of the invention, as a closure for a valve housing of a pinch valve. A pinch valve generally comprises a hose guide which runs through the housing body, into which a hose which guides a medium can be inserted. In order to insert the hose, the cover which closes the upper side of the housing body is opened. In the closed state, the cover simultaneously forms a seat against which the hose is pressed when the opposing, radially movable clamping elements are fed. The cover which acts as a seat must here withstand relatively large forces in the normal direction. When the cover is constructed as a push-pull cover, these forces are introduced into the housing body by the laterally directed guide edge of the cover and the corresponding cover guide groove of the housing body, wherein the large interaction surface between the guide edge and the cover guide groove achieves a uniform pressure distribution without pressure peaks. Tilting, wear and the like are reliably avoided thereby. This applies in particular in comparison with a flap which is hinged to the housing body by means of a hinge, wherein the flap must be fixed in the closed position on the housing body by means of a locking element which is arranged at its free side edge. The normal forces acting on the cover are introduced into the housing cover by the aforementioned locking element alone, wherein the locking element is subjected to significant force peaks. Furthermore, in this closure it is not always possible without difficulty to recognize whether the cover is correctly closed, so that there is a risk that, when the pinch valve is operated, a cover which is not completely closed is pried open and the hose comes out of the housing.

[0006] Therefore, push-pull covers are advantageous in terms of safely closing pinch valves, but are disadvantageous in terms of operability. It is often difficult to introduce the cover with its guiding edge precisely into the cover guiding groove of the housing body in order to close the housing again; the closer the guiding edge is fitted into the cover guiding groove in order to avoid a gap in the normal direction, the more so. Furthermore, a disadvantage of conventional push-pull covers is that they can be lost or confused when a plurality of pinch valves of a complex medium guiding device are arranged adjacent to one another. Finally, in order to be able to place a hose into the housing body, the conventional push-pull cover has to be removed completely, for which a free space of at least the cover length adjacent to the housing body in the longitudinal direction is required. SUMMARY

[0007] The technical problem addressed by the present application is to improve the generic housing, in particular the housing of a pinch valve, in terms of safety and operability.

[0008] The technical problem is solved by a valve housing for a pinch valve according to the application, which valve housing comprises a housing body having an opening in the upper part and two mutually opposite side walls which laterally delimit the opening with their upper edges, the inner sides of the side walls each having a longitudinally extending cover guiding groove close to the upper edge, and a plate-like cover having a laterally and longitudinally extending guiding edge, the cover being movably supported on the housing body by the guiding edge fitting into the cover guiding groove of the housing body, in that the housing body carries a peg on the outer side of one of the side walls, which peg is oriented parallel to the cover guiding groove, and the cover carries a sleeve which is fixed to a tongue plate overhanging the corresponding side wall of the housing body above the edge, the sleeve being oriented coaxially to the peg and surrounding the peg in the form of an axially and rotationally movable sliding bearing.

[0009] The basic idea of the application is to use the solution of a push-pull lid as the original closure mechanism for the lid, but at the same time to provide for the lid to be hingedly articulated on the housing body in the manner of a flip lid, the articulation ensuring that the lid cannot be lost and at the same time reducing its positioning and orientation freedom, so that it is facilitated to introduce the guiding edge of the lid correctly into the lid guiding slot of the housing body. The advantages of the push-pull lid and the advantages of the flip lid are thus combined with one another; their respective disadvantages are eliminated. In the open state, the lid behaves essentially like a flip lid; in the closed state or in the state shortly before being pushed on, the lid behaves like a push-pull lid. In particular, the normal force exerted on the closed lid when operating the pinch valve is introduced into the housing body solely via the interaction surfaces of the guiding edge and the lid guiding slot; the hinge mechanism is completely force-free in this case. When opening the lid, that is to say when moving out of the closed position in the longitudinal direction by means of the edge / slot interaction, the sleeve slides force-free on the peg in the peg axial direction. Only when the lid guiding slot of the housing body and the guiding edge of the lid are disengaged from one another does the peg and the sleeve jointly serve as a pivot bearing, which effects the pivoting of the lid and thus the release of the opening of the housing body, without the lid being mechanically separated from the housing body. In this flipped-open state, the hose can be inserted and laid or replaced. For closure, the lid is again brought together in its moved position, wherein the sleeve / peg connection first serves as a pivot bearing and in the fully closed state also as an axial guide, by means of which the guiding edge of the lid can be introduced correctly in height and without tilting into the lid guiding slot of the housing body. As soon as the lid guiding slot and the guiding edge are engaged with one another, the sleeve / peg connection is deactivated again and the lid essentially behaves again as a pure push-pull lid.

[0010] As explained at the outset, the disadvantage of the common push-pull lid is its large space requirement in the longitudinal direction. In order to mitigate this problem, it is provided in one refinement of the application that the guiding edge of the lid and the lid guiding groove of the housing body are each composed of segments which are spaced apart from one another in the longitudinal direction, which are coordinated with one another such that there is at least one push-through position of the lid in which the segments of the guiding edge of the lid are arranged intermittently with the segments of the lid guiding groove of the housing body, wherein the segments of both types, namely the guiding edge segments on the one hand and the lid guiding groove segments on the other hand, are disengaged from one another. This essentially corresponds to a comb-like design of the at least upper slot edge of the guiding edge on the one hand and of the guiding groove on the other hand. The lower, that is to say the slot wall which is placed inside the housing, of the lid guiding groove can be continuous and uninterrupted, however. They even advantageously provide the guiding edge of the lid with a flat, uninterrupted bearing surface. The guiding edge and the guiding groove which are designed in this segmented manner are disengaged from one another when the "teeth" of their respective "combs" are "gapped" from one another. In this state, the push-pull lid is lifted from the housing body or, according to the application, is flipped open from the housing body. The movement in the longitudinal direction which is required for this depends on the particular coordination of the slot segments or edge segments and their gaps, but in any case is less than the complete lid length which the lid would have to be moved in the case of a guiding groove and guiding edge of this segmented design.

[0011] As explained, the lever passes through its sleeve and the articulation of the peg at the housing body also serves to make the cover not lost. But some situations are conceivable in which the separation of the cover from the housing body is completely desired. A pinch valve is thus conceived, the housing of which can be equipped with different hose guides and different clamping pieces in order to match different hose sizes. This exchange of hose guides and clamping pieces can also make the exchange of the seat necessary, against which the hose is pressed by means of the clamping piece. As already explained at the beginning of this text, the cover usually forms the seat, for which the cover has specially shaped seat regions. If these seat regions are not fixed at the rest of the cover in an exchangeable manner, but are an integral component of the cover, then the entire cover has to be replaced in order to replace the seat. To facilitate this, it is provided in an advantageous design variant of the invention that the peg is detachably fixed at the housing body. It can be provided in particular that the peg is supported in two eyelets which are arranged at the outside of the associated side wall of the housing body spaced apart from one another in the longitudinal direction. At least one of these eyelets, here the first eyelet or the one on the inlet side, is configured as a through-hole. The peg, which is preferably circular in cross-section, can be moved through this through-hole and into the spaced-apart second eyelet. This is preferably carried out in the case of a closed push-pull cover, that is to say, the cover is already fastened on the housing body by the interaction between the cover guide groove of the housing body and the guide edge of the cover, so that the sleeve is oriented coaxially with the peg bearing eyelet, so that the peg can be moved through the sleeve at the same time when it is moved into the eyelet. In order to replace the cover, the peg is pulled out of the sleeve and the eyelet in the opposite manner and the cover can be completely removed after the open movement.

[0012] For reasons to be explained further below, it is considered particularly advantageous if the second eyelet is configured as a blind hole through which the peg cannot be moved, but can only be moved into the blind hole against a stop. Here, the peg has a stop element at its end closest to the second eyelet and / or the blind hole which can be moved in the axial direction of the peg under spring pretension. This spring-preloaded stop element counteracts the movement of the peg into the second eyelet.

[0013] The axial fixation of the pin is not required in principle, since the pin, as already explained above, does not actually take up axial forces in the prescribed operation. However, persistent vibrations or improper operation can lead to a longitudinal movement of the pin, which can then lead to an undesired opening of the hinge formed by the pin and the sleeve together. The axial fixation of the pin is therefore desirable. As provided in a preferred refinement of the application, it is helpful that the pin has a radial protrusion, that is to say a radially extending protrusion, in the region in which it is supported in the first eye, and that the first eye has a corresponding first groove at its inner side, which extends in the axial direction of the pin, the end side of the first groove facing away from the second eye being open. In other words, a longitudinally extending groove is provided on the inner side of the first eye, which is open at the inlet side. The mentioned radial protrusion can be engaged into this groove when the pin is moved through the first eye.

[0014] In a possible embodiment of the application, the mentioned groove is closed at the outlet side of the first eye and has a first bend inside the first eye. In order for the radial protrusion engaged into the first groove to be able to pass the bend, the pin needs to be correspondingly rotated during the insertion, so that the pin is locked in the curved groove in the first eye in a latching manner.

[0015] However, the construction of a bent groove in the inner wall of a relatively small diameter opening is technically relatively complex. Therefore, in a preferred alternative, it is provided that both end sides of the first groove are open, so that the pin can be inserted to such an extent that its radial protrusion completely passes through the first groove, which is constructed as a through groove, and is positioned in the region between the two eyes. The twisting of the pin in this axial position prevents the pin from being pulled out, since the radial protrusion rests against the radially inner edge of the first eye. This embodiment is preferably implemented at the distal end of the pin or in the second eye together with the already mentioned spring-preloaded stop element. With a corresponding dimensioning, a compression spring is of course required in order to enable the radial protrusion to completely pass through the first groove. After the subsequent twisting of the pin, the radial protrusion is pressed against the axially inner edge of the first eye by the spring force of the stop element.

[0016] In order to further improve this axial securing, it can be provided in a particularly preferred embodiment of the application that the first bore has, at its inner side, a second groove which is offset from the first groove and extends in the axial direction of the peg, likewise corresponding to the projection of the peg, the end side of the second groove facing the second bore being open and the end side of the second groove facing away from the second bore being closed. In other words, the second groove is configured as a blind groove which opens towards the axial interior. If, in this design, the peg is twisted to such an extent that the radial projection is in front of the entrance to the second groove, the radial projection is pressed into this second groove by the spring force of the stop element and pressed against the closed end side thereof, wherein the interaction between the groove wall and the radial projection results in a rotational securing of the peg. In other words, in this case, unintentional twisting of the peg is excluded, such that the radial projection can reach the axially inner entrance to the first groove and be moved out in the axial direction. Rather, a force in the axial direction of movement is required in order to release the radial stop from the second groove, so that the peg is twisted to such an extent that the radial projection is in front of the axially inner entrance to the first groove and the peg is then pulled out of the bore in the axial direction. This complex procedure is easy to perform, but not unintentional and to some extent not random, for example subject to vibrations. In order to facilitate this operation, it is preferably provided that the peg has a radially protruding lever in the end region of the first bore in front of it in the axial direction. The required axial and rotational forces can be introduced by means of this lever.

[0017] In order to ensure that the cover is also axially fixed in its closed position, it is preferably provided that the cover and the housing body have corresponding elements of a ball detent mechanism which interact with one another in the closed position of the cover in order to be able to detachably secure against longitudinal movement between the cover and the housing body. Preferably, spring-prestressed, rounded detent elements, for example balls or ball studs, which are supported at the housing body, project into the travel path of the cover and, due to their rounded shape, are pressed in their position in the housing body against their spring prestress when passing the cover. The closed positioning of the cover is also characterized in that corresponding recesses in the working face of the cover reach the location of the mentioned spring-prestressed detent elements, so that these are spring-drivenly engaged into the mentioned recesses. Thereby, the locking of the cover is ensured. But this can be overcome in a similar manner by a corresponding force expenditure upon axial movement. Furthermore, by this spring prestress, the guide edge of the cover is pressed on one side against one of the groove walls of the cover guide groove, whereby the corresponding play is cancelled. The cover guide groove can therefore be dimensioned relatively wide with respect to the guide edge, which in turn facilitates the introduction of the latter into the former. Of course, the reverse arrangement is also possible, wherein the spring-prestressed detent elements are part of the cover and the corresponding detent recesses are part of the housing body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Further details and advantages of the invention will become apparent from the following detailed description and accompanying drawings.

[0019] in:

[0020] Figure 1 An exploded view of a pinch valve with a housing according to the invention is shown;

[0021] Figure 2 The image shows the assembled state with the lid closed. Figure 1 Exploded view of a pinch valve;

[0022] Figure 3 It shows Figure 2 A cross-sectional view of a pinch valve in the open valve position;

[0023] Figure 4 It shows Figure 2 A cross-sectional view of a pinch valve in the closed valve position;

[0024] Figure 5 The image shows the assembled state with the lid open. Figure 1 Exploded view of a pinch valve;

[0025] Figure 6 It shows Figure 1 A cross-sectional view of the body of the pinch valve; and

[0026] Figure 7 It shows the case without a bolt. Figure 1 A cross-sectional view of the body of the pinch valve.

[0027] The same reference numerals in the accompanying drawings refer to the same or similar elements. Detailed Implementation

[0028] Figure 1 An exploded view of a pinch valve 10 with a housing according to the invention is shown. The pinch valve 10 includes a housing body 100 having longitudinally extending sidewalls 110 and an end wall 111 with a U-shaped recess. A housing insert 410 is insertable into the hollow space of the housing body 100. The housing insert has a section with a rounded groove 412 and, together with the recess of the end wall 111 of the housing body 100, forms a hose guide 400 for a longitudinally extending, flexible hose (not shown) for guiding media. This hose guide 400 is particularly useful in… Figure 5 It can be clearly seen in the middle.

[0029] The sidewalls 110 of the housing 100 each have cover guide grooves 120 at their upper edges. In the illustrated embodiment, the cover guide grooves are configured as two sections 122 spaced apart from each other by a gap 124.

[0030] At the central location, the inner side of the side wall 110 of the housing body 100 has a vertically extending first clamp element guide slot 114, respectively, which has a longitudinally extending step 112. In the following, the function of the step 112 should also be discussed in more detail Figure 3 and Figure 4 The function of the step 112 is discussed in more detail, wherein Figure 3 and Figure 4 respectively show a cross-sectional view of the pinch valve 10 in the plane of the first clamp element guide slot.

[0031] The housing insert 410, which can be inserted into the hollow space of the housing body 100, has a section of a circular trough 412 and, together with the recess of the end wall 111 of the housing body 100, forms a hose guide 400 for a not shown, longitudinally extending, media-conducting flexible hose. This hose guide 400 can be clearly seen in the illustration of Figure 5 . The housing insert 410 has a vertically extending clamp element guide slot 414, respectively, at its end sides facing each other, the function of which should also be discussed in more detail in the following.

[0032] One of the side walls 110 of the housing body 100 has a first eyelet 140 and a second eyelet 150 on its outer side, which are configured and aligned at a distance from each other in the longitudinal direction, so that a pin 500 can be moved into these eyelets in order to thus obtain an axial and rotational sliding bearing. The first eyelet 140 is configured as a through-hole in the illustrated embodiment, the second eyelet 150 is configured as a blind hole. In the illustrated embodiment, the pin 500 has a spring-preloaded stop element 510 at its distal end and a lever 520 at its proximal end. Furthermore, in the illustrated embodiment, the pin 500 has a radial protrusion 530 between its two end portions adjacent to the lever 520. In the following, these elements and their function should be discussed in more detail Figure 6 and Figure 7 .

[0033] Furthermore, the pinch valve 10 also comprises a cover 200, the longitudinal sides of which are reinforced with guide edges 210, respectively. The guide edges 210 are divided into two sections 212, respectively, in the illustrated embodiment, which are spaced apart from each other by a gap 214, which can be clearly seen in the illustration of Figure 5It is clearly visible in the image. The guide edge 210 interacts with the cover guide groove 120 of the housing body 100 during operation. Here, the guide edge 210 is introduced into the cover guide groove 120, such that the aforementioned elements form a movable sliding support for the cover 200 on the housing body 100. By the longitudinal movement of the cover 200, the upwardly open housing body 100 can thus be closed or opened according to the principle of a push-pull cover. The closed position of the cover is defined by four spring-preloaded ball joints 130 introduced into the working surface of the housing body 100, which lock into corresponding locking recesses 230 in the bottom side of the cover 200. These locking recesses 230 are located in... Figure 5 As can be seen, the segments 122 and gaps 124 of the cover guide groove 120 of the housing body 100 are coordinated with the corresponding segments 212 and gaps 214 of the guide edge 210 of the cover 200, such that at least one push-position of the cover exists, in which two opposing segments 212 of the guide edge 210 of the cover 200 are located in the opposing gaps 124 of the cover guide groove 120 of the housing body 100, so that the cover 200 can be lifted vertically from the housing body 100 or can be pivoted from the housing body about a pivot axis parallel to its sidewalls.

[0034] To provide such a pivot axis, the cover 200 has a tongue 222 that extends laterally beyond one of its guide edges 210. The tongue 220 has a sleeve 222 at its laterally outer end, the sleeve being in the assembled state of the housing, as particularly... Figure 2 and Figure 5 As can be seen, the sleeve 222 is aligned with the eyelets 140, 150 and the bolt 500 inserted into these eyelets, so that the bolt 500 and the sleeve 222 together form a pivot bearing for the sleeve 222 and therefore for the axial and rotational movement of the cover 200. It should be noted that the length of the sleeve 222 is set to be less than the distance between the two eyelets 140, 150, so that axial movement of the cover 200 relative to the housing body 100 is possible; especially when the guide edge 210 of the cover is engaged with the cover guide groove 120 of the housing body 100.

[0035] also, Figure 1 Also shown is a clamp 300, which includes a push rod 310 and two clamping arms 320. In the illustrated embodiment, the push rod 310 is constructed in two parts, namely, it has a push rod shaft 312 and a push rod tip 314, the push rod tip having a hinge portion 322 for the clamping arms 320. The clamping arms 320 are hook-shaped and each has a bent hook end 324 at its tip. At the bend of the hook end 324, the clamping arms 320 each have a contact roller 326 on their outer side for interacting with a first clamping guide groove 114 of the housing body 100, which will be discussed in more detail below.

[0036] The push rod shaft 312 and the push rod tip 314 can be detachably connected to one another by means of a ball detent mechanism 316, which can be seen in particular in the cross-sectional view in Figure 3 and Figure 4 .

[0037] Figure 2 The pinch valve 10 is shown in the assembled state with the closed cover 200. Figure 3 and Figure 4 respectively show Figure 2 the pinch valve 10 in the valve open position Figure 3 and in the valve closed position Figure 4 . In Figure 3 and Figure 4 , the cross-sectional plane A-A is indicated in the auxiliary view shown on the left in the sectional view. It can be seen that the cross-sectional plane extends transversely to the longitudinal direction of the pinch valve 10, that is to say transversely to the soft tube guide direction and centrally, so that the cross-sectional plane extends exactly in the centre of the first clamp guide slot 114. Due to the step 112, the passage formed between the side walls is narrower in the lower region thereof than in the upper region thereof. In the valve open position, that is to say in the retracted position of the clamp 300 shown in Figure 3 , the clamp arms 320 are in the lower, narrower passage region. They rest with their contact rollers 326 on the slot bottom of the first clamp guide slot 312. As can be seen in Figure 3 , the relative dimensions are chosen such that the clamp opening formed by the clamp arms 320 is not completely open. Nevertheless, the free space above the clamp opening up to the bottom side of the cover 200 is still large enough to position a flexible, medium-guiding soft tube in the soft tube guide 400; in particular by seating the soft tube in the circular bottom slot 412 of the housing insert 410.

[0038] To close the valve, the clamp 300 is moved towards the cover, so that the opening bottom of the clamp presses the soft tube against the cover 200, which serves as a seat, and narrows or completely closes the inner cavity of the soft tube there. During the feed of the push rod 310, the contact rollers 326 run over the step 112 and thus reach the upper, wider passage region, in which the clamp opening can be completely open. The elasticity of the soft tube, which resists the feed of the push rod, forces this opening of the clamp opening.

[0039] When the valve is reopened, the push rod is moved back. The contact roller 326 overcomes the step 112 again, so that the clamping arms 320 are pivoted towards each other by the smaller spacing of the side wall 110 in the passage area below, so that the clamping jaws are again partially closed here. Here, the hook end 324 presses from the lateral outside on the folded area of the hose, which is not yet completely opened, and thus supports the reopening of the inner chamber of the hose, even in the case of insufficient inherent elasticity of the hose, for example due to the mutual adhesion of the inner walls of the hose. The forced guidance of the clamping arms 320, which is facilitated by the interaction of the step 112 with the contact roller 326, provides a mechanically simple, extremely robust and durable solution, which reliably forces the complete reopening of the inner chamber of the hose immediately upon opening of the hose clamp valve 10. The arrangement of the step 112 in the first clamping element guide slot 114 is not mandatory for the functionality, but is advantageous, since it prevents the clamping element 300 from rotating about its push rod axis. A further measure for preventing such a rotation is the second clamping element guide slot 114 in the mutually opposite sides of the housing insert 410 of the hose guide 400. They interact with the longitudinal protrusion of the push rod tip 314, which is visible in Figure 1 without special reference numerals.

[0040] In order to replace the hose and / or the housing insert and / or the clamping element and / or parts thereof, the cover 200 has to be opened. As already explained above, the closed position of the cover shown in Figure 2 is defined by the latching engagement of the spring-preloaded ball head pin 130 of the housing body 100 into the corresponding latching recess 230 of the cover 200. Furthermore, in this closed position, the guide edge 210 of the cover 200 is guided in the corresponding cover guide slot 120 of the housing body 100. This means that the section 212 of the guide edge 210 of the cover 200 is co-located with the corresponding section 122 of the cover guide slot 120 of the housing body 100. The cover is not possible to lift vertically or to pivot in this state. Based on the spring-preloaded ball head latching mechanism 130 / 230, the cover 200 is fixed without play vertically and horizontally in this position. The sleeve 222 coaxially surrounding the peg 500 does not have to support any forces in this position.

[0041] A movement of the cap in longitudinal direction is possible in the case of a use which overcomes the longitudinal force of the latching mechanism 130 / 230. The sleeve 222 is here moved in longitudinal direction, that is to say in the axial direction of the peg, without force on the peg which is supported in the eye 140, 150. In the movement position in which the section 212 of the guide edge 210 of the cap 200 has a clearance to the section 122 of the cap guide slot 120 of the housing body 100, the cap can be lifted or pivoted, wherein the spring pretension of the ball stud 130 presses the cap upward when this movement position is reached and thus a visible marking movement position can be seen. In this state, the sleeve 222 and the peg 500 together act as a pivot bearing for the cap 200, so that the cap can be transferred into the pivoted open position shown in Figure 5 In this position, the interior of the housing body 100 is accessible, in particular for the purpose of exchanging the hose, the housing insert 410 and / or the clamping piece 300 or parts thereof.

[0042] The cap 200 is closed in the reverse order, wherein the axial guidance by the sleeve 222 and the peg 500 achieves a safe, unobstructed introduction of the guide edge 210 of the cap 200 into the cap guide slot 120 of the housing body 100.

[0043] As mentioned, the interaction between the sleeve 222 and the peg 500 is essentially free of axial forces. But this is an idealized assumption. In reality, axial forces acting on the peg 500 can occur, in particular due to persistent vibrations. Therefore, in the shown embodiment, an axial fixation of the peg is provided, which at the same time enables the extraction of the peg for the purpose of completely removing the cap 200. For illustration, reference is made to Figure 6 and Figure 7 which are different sectional views along the sectional plane A-A, as shown in the auxiliary diagram on the right of the respective sectional view. Figure 7 At the same time, an enlarged view of the section B in the respective sectional view is shown.

[0044] As in Figure 7As can be seen in the mentioned enlarged view of the first eye 140, the first eye 140, which is configured as a through-hole, has a first slot 142, which is configured as a through slot running through the eye in the longitudinal direction. Second slots 144 are arranged at an angular spacing of 90°, which are configured as blind slots running in the longitudinal direction, the end sides of which facing the second eye 150 are open. When the peg 500 is introduced into the first eye, the peg is oriented by means of the lever 520 such that its radial protrusion 530 is introduced into the first slot 242. The peg is moved forward here to such an extent that the radial protrusion 530 completely passes through the first slot 142 and is located between the two eyes 140, 150. In particular in the last phase, this movement takes place against the spring force of the spring-preloaded stop element 510, which in this phase rests against the closed rear wall of the second eye 150, which is configured as a blind hole. Subsequently, the peg is twisted by 90° by means of the lever 520, so that its radial protrusion 530 is located in front of the entrance to the second slot 144, which is configured as a blind slot. Due to the spring force of the stop element 510, the peg 500 is pressed into the second slot 144, which is configured as a blind slot, when the lever 520 is released, wherein this rearward movement of the peg 500 ends when the radial protrusion 530 rests against the closed end of the second slot 144. The peg 500 is dimensioned here such that its distal end does not yet move out of the second eye 150, which is configured as a blind hole, in this case. The peg 500 is thus axially and rotationally fixed.

[0045] In order to remove the peg 500, a pressure needs to be exerted onto its proximal end such that its radial protrusion 530 moves out of the blind slot 144 against the spring force of the stop element 510. The peg 500 is twisted by 90° to reposition its radial protrusion 530 in front of the through slot 142, which enables the entire peg to be pulled out of the two eyes 140, 150. In the embodiment shown, the first and second slots 142, 144 are each configured in a double embodiment, so that the respective direction of rotation of the peg during locking or unlocking is irrelevant.

[0046] The person skilled in the art understands that the described independent fixing and removal of the peg 500 is virtually irrelevant. More important is the hinging of the cover 200 by means of the peg 500. The above-described process is therefore typically performed with the cover 200 in the closed position, so that the peg 500 can coaxially pass through the sleeve 222, which has been positioned in advance.

[0047] Of course, the embodiment discussed in the special description and shown in the figures is only an illustrative example of the invention. The person skilled in the art obtains a wide variety of variant possibilities from the disclosure.

[0048] List of reference signs

[0049] 10 pinch valve

[0050] 100 housing body

[0051] 110 side wall

[0052] 111 end wall

[0053] 112 step portion

[0054] 114 first clip guide slot

[0055] 120 lid guide slot

[0056] 122 segments of lid guide slot

[0057] 124 gaps between segments of lid guide slot

[0058] 130 ball stud

[0059] 140 first aperture

[0060] 142 through slot / first slot

[0061] 144 blind slot / second slot

[0062] 150 second aperture

[0063] 200 lid

[0064] 210 guide edge

[0065] 212 segments of guide edge

[0066] 214 gaps between segments of guide edge

[0067] 220 tongue

[0068] 222 sleeve

[0069] 230 latching recess

[0070] 300 clip

[0071] 310 push rod

[0072] 312 push rod shaft

[0073] 314 push rod tip

[0074] 316 ball latching mechanism

[0075] 320 clip arm

[0076] 322 hinged portion

[0077] 324 hook end

[0078] 326 contact roller

[0079] 400 hose guide

[0080] 410 housing insert

[0081] 412 circular bottom groove

[0082] 414 second clip guide groove

[0083] 500 peg

[0084] 510 stop element

[0085] 520 lever

[0086] 530 radial protrusion

Claims

1. Valve housing for a pinch valve, comprising - a housing body (100) having an opening in the upper region and two mutually opposite side walls (110) laterally delimiting the opening with their upper edges, the inner sides of the side walls each having a longitudinally extending cover guide groove (120) near the upper edge, and - a plate-like cover (200) having a laterally, longitudinally extending guide edge (210), which cover is movably supported on the housing body by the guide edge being inserted into the cover guide groove (120) of the housing body (100), the housing body (100) carrying at the outer side of one of the side walls (110) a peg (500) oriented parallel to the cover guide groove (120) and the cover (200) carrying a guide oriented coaxially to the peg (500) fixed on a tongue (220) overhanging the corresponding side wall upper edge of the housing body (100), which guide surrounds the peg (500) in the form of a rotatably movable sliding bearing, wherein the peg (500) is detachably axially fixed on the housing body and the guide is configured as a sleeve (222) surrounding the peg (500) in the form of an additional axially movable sliding bearing. The guide edge (210) of the cover (200) and the cover guide groove (120) of the housing body (100) are each composed of sections (212; 122) spaced apart from one another in the longitudinal direction, which sections are coordinated with one another such that there is at least one push-through position of the cover (200) in which the sections (212) of the guide edge (210) of the cover are arranged discontinuously with the sections (122) of the cover guide groove (122) of the housing body (100), wherein the guide edge sections (212) and the cover guide groove sections (122), respectively, are disengaged from one another. The peg (500) is supported in a first eyelet (140) and a second eyelet (150), which are arranged spaced apart from one another in the longitudinal direction on the outer side of the assigned side wall (110) of the housing body (100). wherein The first eyelet (140) is configured as a through-hole. The second eyelet (150) is configured as a blind hole.

2. The valve housing according to claim 1, characterized in that The peg (500) has a stop element (510) on its end near the second eyelet (150) and / or the blind hole, which is spring-preloaded movable in the peg axial direction.

3. Valve housing according to any of the preceding claims, characterized in that The peg (500) has a radially extending protrusion (530) in the region in which it is supported in the first eyelet (140) and the first eyelet (140) has on its inner side a corresponding first groove (142) extending in the peg axial direction, the end side of which facing away from the second eyelet (150) is open.

4. The valve housing of claim 3, wherein ​ 5. The valve housing of claim 4, wherein ​ 6. The valve housing of claim 5, wherein ​ 7. The valve housing of claim 4, wherein ​ 8. The valve housing of claim 7, wherein The two end sides of the first slot (142) are open and the first eye (140) has on its inner side a second slot (144) offset to the first slot (142), extending in the bolt axial direction, also corresponding to the radial projection (530) of the bolt (500), the end side of the second slot facing the second eye (150) being open and its end side facing away from the second eye (150) being closed.

9. The valve housing of claim 7, wherein The bolt (500) has in its axial direction in front of the end region of the first eye (140) a radially protruding lever (520).

10. The valve housing according to claim 1 or 2, characterized in that The cover (200) and the housing body (100) have mutually corresponding elements of a ball click lock mechanism (130, 230) which in the closed position of the cover (200) interact with one another between the cover (200) and the housing body (100) in order to achieve detachable fixing against longitudinal movement.

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