hose connection

Abstract

End cap (28) comprising: a wall element with an outer surface (32), an inner surface (52) and a lower end face (58), wherein the wall element defines an opening (31); and fastening elements (44a, 44b, 46) for attachment to complementary fastening elements of a hose connection housing (1), wherein the lower end face (58) of the wall element forms an undercut (48) in the hose connection housing (1) which is designed to retain a functional component in the hose connection housing (1), in particular as a valve seat or to retain a sealing element in the hose connection housing (1), and wherein an upper annular projection (40) is formed on the outer surface (32) of the wall element, which has a recess (36) for the engagement of a guide mark (15) of the hose connection housing (1).

Description

TECHNICAL AREA

[0001] The invention relates to an end cap comprising: a wall element with an outer surface, an inner surface, and a lower end face, wherein the wall element defines an opening; and fastening elements for attachment to complementary fastening elements of a hose connection housing. The invention further relates to a hose connection comprising: a hose connection housing and the aforementioned end cap. STATE OF THE ART

[0002] Hose connectors are known in various designs. One design of a hose connector with a valve, e.g., a check valve, is known from DE 21 11 326 A. The valve opens under high pressure because this high pressure causes the elastic wall of the pipe to lift at one point. This creates an opening to allow the medium to escape.

[0003] However, this device does not allow the production of pipes from more robust and resistant materials, such as metal, because the medium could not escape due to the lack of elasticity in the pipe wall.

[0004] Furthermore, this design requires numerous manufacturing steps, as the valve and valve body must be installed inside the pipe. In particular, frequent use of this valve in a flexible pipe can lead to deformation, causing seal wear. Such wear results in irreversible damage to the pipe.

[0005] Furthermore, a connector with a valve is known from DE 602 20 509 T2, which is particularly useful for connecting an air line to a connector.

[0006] In addition, DE 10 2009 019 263 A1 discloses a compressed air connector which establishes the connection between a compressed air coupling and the hose line connected to the compressed air connector by means of a nozzle and ensures an extremely low flow resistance to the compressed air consumer by means of flow-optimized cross-sectional design and prevents the unhindered dangerous escape of the compressed air volume compressed in the hose line when the compressed air hose is disconnected by means of a springless, shape-specific locking element with throttle notches guided in the connector part. TASK OF INVENTION

[0007] Based on this, the object of the present invention is to provide a hose connection that allows further components to be integrated in a simple manner. TECHNICAL SOLUTION

[0008] This problem is solved by an end cap according to claim 1 and a hose connection according to claim 8. Advantageous embodiments result from the features of the dependent claims.

[0009] An end cap according to the invention comprises: a wall element with an outer surface, an inner surface, and a lower end face, wherein the wall element defines an opening; and fastening elements for attachment to complementary fastening elements of a hose connection housing. The lower end face of the wall element forms an undercut in the hose connection housing, which is designed to retain a functional component in the hose connection housing, in particular as a valve seat or to retain a sealing element in the hose connection housing. An upper annular projection is formed on the outer surface of the wall element, which has a recess for engaging a guide mark of the hose connection housing.

[0010] The use of an end cap, particularly in a system with a hose connector housing, offers a quick and easy way to create an integrated valve seat or integrate a sealing element. The end cap has fastening elements that allow it to be attached to complementary fastening elements of the hose connector housing. Unlike conventional hose connectors, which are attached by screwing on a threaded fitting or using a nut, the end cap simply slips onto the hose connector. This allows the end cap to be easily removed at any time in case of wear, enabling the replacement of functional components such as a valve body or sealing ring.

[0011] Preferably, the fastening elements are designed as snap-in elements.

[0012] The snap-in elements feature, in particular, a side rib and a lower rib that define a window.

[0013] The outer surface of the end cap has the ring-shaped projection and includes in particular a ring-shaped projection which extends flush with the lower front face of the inner surface in the direction of a central axis.

[0014] An upper ring-shaped projection may be formed on the outside of the wall element.

[0015] The end cap can include a lower ring-shaped projection which extends flush with the lower end face of the wall element in the direction of a central axis of the end cap.

[0016] In particular, the end cap includes ribs which are arranged at intervals from one another on the inside of the wall element, adjoin the ring-shaped projection and extend towards an upper end face of the wall element.

[0017] The lower side of the annular projection preferably forms the undercut together with the lower end face of the wall element when the end cap is inserted into a hose connection housing.

[0018] Furthermore, the outside and / or the inside of the wall element may have an outer or inner ring-O-groove.

[0019] The end cap can serve as a seat for a check valve. The end cap's placement on a hose connector housing allows for the insertion of a spherically symmetrical sealing element into the housing. The valve is closed when the spherically symmetrical sealing element protrudes into the opening of the end cap. A liquid medium can flow through the opening of the end cap when the valve is open.

[0020] The problem is also solved by a hose connection comprising: a hose connection housing and an end cap as described above; wherein the hose connection housing has a wall and fastening means for attaching the end cap, and the fastening means may in particular have a recess with side grooves and a connecting groove, wherein the wall has a guide mark for insertion into the recess of the end cap.

[0021] The fasteners may have complementary locking elements to the locking elements of the end cap.

[0022] For a secure and aligned closure, the outer wall of the hose connector housing features a guide mark that fits into the recess of the end cap, ensuring a straight and twist-proof assembly of the components. Furthermore, the end cap and the hose connector housing form a system in which the end cap is attached to the hose connector housing for easy assembly of the two elements. The undercut of this system forms, for example, a valve seat or a retention element for a seal, such as an O-ring groove.

[0023] The hose connection may have a closing element, e.g. a plug, which is located on the valve seat.

[0024] The sealing element is preferably integrated into the hose connection. BRIEF DESCRIPTION OF THE FIGURES

[0025] Further features and advantages of the invention will become apparent from the description of a preferred embodiment with reference to the figures. These show: Fig. 1 Perspective view of a hose connection housing. Fig. 2 Perspective view of an end cap. Fig. 3 a locking position of the end cap and the hose connection housing. Fig. 4 a system consisting of end cap and hose connection housing. DETAILED DESCRIPTION OF AN EXAMPLE OF EXECUTION

[0026] The in Fig. 1 The hose connection housing 1 shown comprises a ring-shaped wall 4 with a flange 24, which lies between the outer wall 4 and the hose connection 26.

[0027] On the side facing away from the flange 24, the wall 4 has an annular end face 16 that defines an opening 30. A flow channel 22 is located on the inner wall 20 of the hose connection housing 1. The outer wall 4 of the hose connection housing 1 has a circumferential annular bead 6 in the area of ​​the annular end face 16, which transitions into an upwardly tapered thickening 8.

[0028] In the upper region of the outer wall 4, recesses 10 and a corresponding projection 12 are formed in the thickening 8 at the outer upper edge. These recesses can be oval, round, U-shaped, or angular. In this embodiment, the recess 10 has a U-shape, consisting of side grooves 13a and 13b and a connecting groove 15. Within the recess 10, one of the vertically downward-pointing projections 12 is located on the annular end face 16. The projection 12 delineates the side grooves 13a and 13b, with the side grooves 13a and 13b of the recesses 10 opening into the annular end face 16. The projection 12 and the recess 10 with the side grooves 13a and 13b and the connecting groove 15 form part of a locking or locking unit for the attachment of, for example, an end cap, a lid or an attachment with a corresponding complementary locking element for, for example, snapping or closing.

[0029] On the ring-shaped end face 16 of the hose connection 1 there is a guide mark 14 projecting vertically upwards. The guide mark 14 serves as a guide for, e.g., an attachment or a cover for snapping into place or closing.

[0030] In Fig. Figure 2 shows an annular end cap 28, which can fulfill the function of, for example, a valve seat or a seal. The illustrated end cap 28 comprises an annular (or cylindrical) wall element with an outer surface 32, an inner surface 52, and an upper end face 38. The annular wall element defines an opening 31.

[0031] The outer surface 32 of the wall element is ring-shaped and may contain recesses or indentations along its entire outer surface. In this embodiment, the end cap 28 has a surrounding O-ring groove 34.

[0032] From the upper end face 38 of the end cap 28, an annular projection 40 extends outwards, which is curved and ends almost parallel to the outer surface 32 of the wall element. The annular projection 40 extends along the entire end face 38 of the end cap 28 and is closed except for a recess 36. The recess 36 is open at the top and bottom, thus allowing, for example, the engagement of the guide mark 14 of the hose connection housing 1 from the Fig. 1, for aligning the end cap 28 with the opening 31 of the hose connection housing 1 and for preventing the two elements from twisting.

[0033] At the lower end of the annular projection 40 is a window 42, which is bounded by side webs 44a and 44b and by a lower web 46. The window 42 serves to engage the projection 12 of the hose connection housing 1. Fig. 1. The side webs 44a and 44b, as well as the lower web 46, serve as locking elements for the recess 10 and, together with the projection 12 and the window 42 of the hose connection 1, form Fig. 1 a locking unit.

[0034] In the lower area on the inner side 52 of the end cap 28, there is an annular projection 57, which extends flush with the lower end face 58 in the direction of a central axis A. Spaced ribs 56, primarily for reinforcement, are located on the inner side 52, adjoining the annular projection 57 and extending to the upper end face 38. The lower end face 58 of the wall element, together with the lower side of the inner projection 57, forms an undercut 48 when the end cap is inserted into the hose connection housing 1. Fig. 1, is used as in the Fig. 4 shown. The undercut can serve to retain a functional component in the hose connection housing 1, e.g. for receiving or as a seat for an O-ring or as a seal for a valve.

[0035] In Fig. 3 is the end cap 28 made of Fig. 2 in an approaching closed position above the hose connection housing 1 from Fig. Positioned 1.

[0036] In such a closing process, the lower end face 58 of the end cap 28 faces the upper annular end face 16 of the hose connection housing 1. In a first step of the closing process, the end cap 28 is placed over the hose connection housing 1. Fig. 1 is positioned such that the respective window 42 of the end cap 28 is located above the corresponding projection 12 of the hose connection 1. The side webs 44a and 44b, as well as the lower web 46 of the window 42 of the end cap 28, are in a closed position above the side grooves 13a and 13b and above the connecting groove 15 of the recess 10 of the hose connection 1. The guide mark 14 of the hose connection 1 serves as an orientation for this position, so that the recess 36 of the end cap 28 is located directly above the guide mark 14 in a closed position.

[0037] The annular projection 40 of the end cap 28 is located above the annular end face 16 of the hose connection housing 1. The distance r of the annular projection 40 from the outer surface 32 is adjusted such that it tightly encompasses the thickness d of the end face 16 of the hose connection housing 1 when closed. In a closed position, the wall element of the end cap 28 projects at least partially into the flow channel 22 of the hose connection 1, so that when the end cap 28 snaps into place with the hose connection housing 1, the outer surface 32 of the wall element rests against the inner surface 20 of the hose connection housing 1 to form a tight, impermeable seal.

[0038] In a second step of the closing process, as in the Fig.As shown in Figure 4, the end cap 28 snaps into place with the fastening means of the hose connection housing 1. The projection 12 of the hose connection housing 1 engages in the window 42 of the end cap 28. Simultaneously, the side webs 44a and 44b, as well as the lower web 46, of the end cap 28 fit into the side grooves 13a and 1b and into the connecting groove 15 of the recess 10 of the hose connection 1. The guide mark 14 fits into the recess 36 of the end cap 28 and, together with the annular projection 40 of the end cap 28, forms an annular, closed outer edge 60. The outer surface 32 rests against the inner wall 20 of the hose connection 1 when attached.

[0039] On the inner surface 52 of the end cap 28, ribs 56 are provided. The ribs 56 adjoin the annular inner projection 57, which extends flush from the lower end face 58 of the inner surface 52 of the end cap 28 in the direction of the axial axis A. When the outer surface 32 rests against the inner wall 20 of the hose connection housing 1, the projection 57 protrudes into the flow channel 22. The lower end face 58 of the end cap 28 and the underside of the projection 57 together form an undercut 48, which can be used, for example, for inserting an O-ring or a valve.

Claims

[1] End cap (28) comprising: a wall element with an outer surface (32), an inner surface (52) and a lower end face (58), wherein the wall element defines an opening (31); and fastening elements (44a, 44b, 46) for attachment to complementary fastening elements of a hose connection housing (1), wherein the lower end face (58) of the wall element forms an undercut (48) in the hose connection housing (1) which is designed to retain a functional component in the hose connection housing (1), in particular as a valve seat or to retain a sealing element in the hose connection housing (1), and wherein an upper annular projection (40) is formed on the outer surface (32) of the wall element, which has a recess (36) for the engagement of a guide mark (15) of the hose connection housing (1). [2] End cap (28) according to claim 1, characterized by, that the fastening elements (44a, 44b, 46) are designed as snap-in elements. [3] End cap (28) according to claim 2, characterized by that the snap-in elements have a window (42), side webs (44a, 44b) and a lower web (46). [4] End cap (28) according to any one of the preceding claims, characterized by , that the end cap (28) includes a lower annular projection (57) which extends flush with the lower end face (58) of the wall element in the direction of a central axis (A) of the end cap (28). [5] End cap (28) according to claim 4, characterized by , that the end cap (28) comprises webs (56) which are arranged at intervals from one another on the inside (52) of the wall element, adjoin the annular projection (57) and extend towards an upper end face (38) of the wall element. [6] End cap (28) according to one of claims 4 or 5, characterized by, that the undercut (48) is formed by the lower end face (58) of the wall element and the lower side of the projection (57) when the end cap (28) is inserted into the hose connection housing (1). [7] Hose connection comprising: a hose connection housing (1) and an end cap (28) according to any one of claims 1-6; wherein the hose connection housing (1) has a wall (4) and fastening elements for attaching the end cap (28), wherein the wall (4) has a guide mark (14) for insertion into the recess (36) of the end cap (28). [8] Hose connection according to claim 7, in conjunction with claim 2, characterized by , that the fastening elements have complementary snap-in elements to the snap-in elements of the end cap (28). [9] Hose connection according to one of claims 7 or 8, characterized by , that the end cap (28) is attached to the hose connection housing (1). [10] Hose connection according to one of claims 7-9, characterized by , that the undercut (48) forms a valve seat or a retaining element for a seal. [11] Hose connection according to claim 10, characterized by that the hose connection has a closing element, e.g. a plug, which is located on the valve seat. [12] Hose connection according to claim 11, characterized by that the sealing element is integrated into the hose connection.

Images