valve upper part

Abstract

The present invention relates to a valve assembly, particularly for use in sanitary equipment, having a sleeve-type head assembly (1) that can be fixed in the valve housing of the equipment, having a spindle (2) having a gripping engagement through which a spindle is rotatably supported in the head assembly (1) about its longitudinal axis and through which a valve body can be operated, wherein at least one radially extending cantilever (27) is molded in the head assembly (1) at the spindle (2), which can be laterally placed against at least one stop (19) arranged in the head assembly (1), thereby limiting the maximum rotation angle of the spindle (2), wherein a protrusion (271) is laterally molded in the cantilever (27), which at least partially covers the stop (19) of the head assembly (1) when the cantilever (27) rests against the stop (19) of the head assembly (1).

Description

Technical Field

[0001] The present invention relates to a valve top component, particularly for use in sanitary equipment, having a sleeve-type head component that can be fixed in the valve housing of the equipment, having a mandrel with a gripping engagement through which the mandrel is rotatably supported in the head component about its longitudinal axis and through which the valve body can be operated, wherein at least one radially extending cantilever is molded in the head component at the mandrel, which can laterally abut against at least one stop arranged in the head component, thereby limiting the maximum rotation angle of the mandrel. Background Technology

[0002] The flow of medium from the equipment is controlled by means of a valve upper component. For this purpose, the valve upper component is screwed into the housing of the equipment by means of its head component. A rotating handle or rod is fixed to the gripping joint of the spindle. In known valve upper components (see document DE 32 07 895 C2), two discs for controlling flow are correspondingly provided. The discs are made of ceramic material. One of these discs (the control disc (Steuerscheibe)) is rotatably arranged in the valve upper component by means of a drive (Mitnehmer) connected to the spindle. The other disc (the inlet disc (Einlassscheibe)) is a fixed seat disc, also called a fixed disc. As the control disc rotates, the discs slide against each other. A lip seal is arranged on the side of the valve seat facing the equipment, abutting against the inlet disc. The seal extends beyond the end face of the valve upper component. It is used for sealing not only the inlet disc but also the valve seat of the equipment.

[0003] The maximum rotation angle of the spindle, which is connected to the control panel via a drive component and material mating, is limited by two stop surfaces molded into the inner wall of the head component. A cantilever molded into the spindle impacts these stop surfaces. Common maximum rotation angles are 90° and 180°. In the case of a 180° maximum rotation angle, a cantilever extending radially to one side is molded into the spindle. To limit the maximum rotation angle to 90°, cantilevers extending radially on opposite diagonally opposite sides can also be molded into the spindle, with four stop surfaces correspondingly arranged on the inner wall of the head component.

[0004] When excessive torque is applied to the spindle, as can occur, for example in hospital equipment with long operating handles for elbow operation, it can cause spindle torsion, thereby forcing the cantilever towards the control panel if the stop surface is damaged, potentially leading to damage to the valve upper components. This effect is particularly noticeable in valve upper components with smaller dimensions, where the spindle and stop surface are designed to be correspondingly small. Summary of the Invention

[0005] The present invention provides a remedy. The object of the invention is to provide a valve upper component that resists damage even under excessive torque applied to the spindle. According to the invention, this object is achieved by a valve upper component having the features of the characteristic portion of claim 1.

[0006] This invention provides a valve upper component that avoids damage even under high torque acting on the spindle. By laterally molding a ulberstand at the cantilever, which at least partially covers the stop of the head component when the cantilever abuts against it, the ulberstand supports the stop in the event of spindle torsion, thereby preventing movement of the cantilever towards the control panel. The lateral ulberstand molded at the cantilever is arranged such that a minimal gap exists between the ulberstand and the stop when the cantilever abuts against the stop of the head component.

[0007] In an improved embodiment of the invention, one or two arc-shaped tabs are molded onto the inner surface of the head component, with corresponding stops formed by the end faces of the tabs. This creates a locally radially surrounding support surface, through which good support is provided for the protrusion of the cantilever extending beyond this support surface.

[0008] In the design of this invention, the cantilever has at least a partial T-shaped cross-section, thereby forming protrusions on two longitudinal sides. This simplifies the manufacturing of the protrusions. The T-shaped cross-section correspondingly forms lateral protrusions for support at two stops that limit the rotation angle.

[0009] In another embodiment of the invention, the valve body is formed by a rotatably arranged control disc, which is placed on a torsionally arranged inlet disc. The disc is molded at the end of the spindle, and a drive member is molded on the side of the disc opposite to the spindle, engaging a recess in the control disc. Here, the drive member is preferably molded to axially abut against the disc at a shoulder (Absatz) arranged in the head member. This arrangement ensures that when the cantilever abuts against a stop, the stop surrounds the lateral protrusion of one side of the disc and the other side of the cantilever, thereby reliably dissipating the torsional force acting on the spindle and the cantilever molded at the spindle. This reliably resists downward movement of the cantilever in the event of spindle torsion. Attached Figure Description

[0010] Other improvements and design schemes of the present invention are described in the remaining dependent claims. Embodiments of the present invention are shown in the accompanying drawings and will be described in detail below. Wherein:

[0011] Figure 1 shows a schematic diagram of a valve assembly with a spindle in the intermediate position.

[0012] a) In a partial cross-section;

[0013] b) In cross section AA,

[0014] Figure 2 A schematic diagram of the valve assembly in Figure 1, showing the mandrel in the stop position, is shown.

[0015] a) In a partial cross-section;

[0016] b) In cross section AA,

[0017] Figure 3 A schematic diagram of the head component of the valve upper part shown in Figure 1 is illustrated.

[0018] a) In a partial cross-section;

[0019] b) In cross section BB;

[0020] c) In the cross section CC,

[0021] Figure 4 A schematic diagram of the mandrel of the valve component shown in Figure 1 is shown.

[0022] a) In a partial cross-section;

[0023] b) In the cross-section,

[0024] Figure 5 This is shown in the position after rotating 90°. Figure 4 Schematic diagram of the mandrel

[0025] a) In a partial cross-section;

[0026] b) In the cross-section,

[0027] Figure 6 A schematic diagram of the sliding sleeve (Gleithuelse) of the valve component shown in Figure 1 is illustrated.

[0028] a) In a partial cross-section;

[0029] b) In the top view,

[0030] Figure 7 A schematic diagram of the head component of the valve upper part is shown in an additional embodiment with a swing angle limited to 90°.

[0031] a) In a partial cross-section;

[0032] b) In cross section BB;

[0033] c) In the cross section CC,

[0034] Figure 8A diagram for insertion is shown. Figure 7 A schematic diagram of the mandrel in the head component.

[0035] a) In a partial cross-section;

[0036] b) In the cross-section (top view) through the cantilever,

[0037] Figure 9 This shows the position after rotating 90°. Figure 8 Schematic diagram of the mandrel

[0038] a) In a partial cross-section;

[0039] b) In the cross-section (top view) through the cantilever. Detailed Implementation

[0040] The valve assembly selected as the exclusion example (Ausschlussbeispiel) has a head assembly 1, through which a spindle 2, guided radially, passes. A control disc 3 is connected to the spindle 2 in a material-fitting manner and is guided radially within the head assembly 1. At the end of the control disc 3 opposite to the spindle 1, an inlet disc 4 is provided in the head assembly 1, to which a lip seal 5, which abuts against the valve seat of the device (not shown), is connected.

[0041] The head component 1 is formed of a symmetrical hollow body with open end faces. The head component 1 has a sleeve-shaped component 14 on its side facing (not shown) the device. A through-window 11 is provided in the sleeve-shaped component 14, which is limited by a longitudinal tab 12. In this embodiment, two windows 11 limited by the longitudinal tab 12 are arranged. After the head component 1 is introduced into the device, the flange 13 of the head component 1 rests on the housing of the device. The flange 13 has an annular groove 15 on its side facing the through-window 11 for receiving an O-ring 151. A bottom bevel 16 is arranged internally in the sleeve-shaped component 14 in the region facing the valve seat. An external thread 17 is molded at the end of the head component 1 opposite to the through-window 11, for engaging the external hexagon 18 of a screwdriver.

[0042] The mandrel 2 is implemented as a generally solid part. It has a gripping engagement 21 on its end facing away from the inlet, which is externally shaped as an outer quadrilateral 211 and has a blind hole 212 with internal threads for fixing (not shown) a rotating handle. A cylindrical section 22 is connected to the gripping engagement 21, through which the mandrel 2 is radially guided in the head member 1, and two annular grooves 24 are introduced in this section to receive O-rings 241, which seal the mandrel 2 relative to the head member 1. Additional annular grooves 25 are arranged between the corresponding annular grooves 24 for receiving sliding bushings 6. A recess 23 is further provided between the gripping engagement 21 and the cylindrical section 22, into which a corrugated fastener 231 in the form of a retaining ring is elastically inserted.

[0043] The cantilever 27 is axially molded to the cylindrical section 26, the cantilever having a generally T-shaped cross-section and extending beyond the diameter of the cylindrical section 25 on one side. A protrusion 271 is correspondingly formed on the sidewall of the cantilever 27 through the T-shaped cross-section. The cantilever 27 is configured such that it laterally abuts against the stop surface 191 of the stop 19 molded on the inner wall of the head member 1 at two defined swing positions, wherein the protrusion 271 located on this side extends beyond the stop 19 by a small axial distance. A disc 28 is molded onto the cantilever 27, having a drive member 281 on its side facing (not shown) the device. The disc 28 abuts against the lower side of the stop 19 of the head member 1, which is constructed in the form of an arcuate tab, opposite to the upper side of the drive member 281, facing the disc 28.

[0044] The control disk 3 is generally constructed as an annular disk with a sector-shaped segment removed from it. In this embodiment, the sector-shaped segment has an angle of approximately 180°. The control disk 3 also has a receiving portion for the drive member 281 of the spindle 2 on its upper side facing the spindle 2.

[0045] A lip seal 5 is introduced into the head component 1 adjacent to the inlet disc 4. The lip seal has a tab 51 surrounding its exterior, which engages in a bottom bevel 16 provided at the end of a sleeve-shaped component 14 of the head component 1. The lip seal 5 is held in its position by an introduced support ring 52, wherein the lip of the lip seal 5 is in sealing contact with the inlet disc 4 and with the device seat (not shown).

[0046] The sliding bushing 6 is constructed as an annular plastic body, separated at its sides by a V-shaped slit (Schlitz) 61. The inner surface of the sliding bushing 6 is generally convex and has a centrally located, surrounding first contact surface 62. Opposite to the first contact surface 62, the outer surface of the sliding bushing 6 has a concave fold (Woelbung) 63, thereby restricting two parallel, surrounding second contact surfaces 64. In the assembled state, the sliding bushing 6 rests against the bottom of the annular groove 25 of the mandrel 2 with its first contact surface 62, wherein its second contact surfaces 64, offset from the first contact surface, rest against the inner surface of the head component 1. (Alternatively, the sliding bushing 6 may also have a central second contact surface on its outer surface and two parallel, offset first contact surfaces on its inner surface.) In this way, an elastic and fully reversible sliding bushing 6 is obtained between the mandrel 2 and the head component 1. The sliding bushing 6 can be easily clamped onto the annular groove 25 of the mandrel 2 through the V-shaped slot 61.

[0047] exist Figure 7 and 8 The diagram shows a head component and spindle of the valve assembly in another embodiment, wherein the control disc has a fan-shaped section of approximately 90° and the spindle has a maximum rotation angle of 90°. For this purpose, the cantilever 27' (which has a T-shaped cross-section, thus forming protrusions 271' on its two sides) is configured such that it extends beyond the diameter of the cylindrical section 25 of the spindle 2' on two diagonally opposite sides. In this embodiment, two stops 19' configured as arc-shaped tabs are arranged opposite each other inside the head component 1, and in the stop position of the spindle 2', the side of the cantilever 27' abuts against the stop surface 191' of the stop at its end. Here, the protrusions 271' arranged on the corresponding side extend beyond the stop 19' (where the side abuts) by a small distance at their end. In this embodiment, the cantilever 27' can therefore be supported on the corresponding stop 19' by two protrusions 271' at each stop position of the spindle 2'.

Claims

1. A valve assembly having a sleeve-type head assembly (1) fixable into a valve housing of a device, the head assembly being penetrated by a spindle (2) having a gripping engagement, the spindle being rotatably supported in the head assembly (1) about its longitudinal axis and through which a valve body can be operated, wherein, At least one radially extending cantilever (27) is molded within the head component (1) at the mandrel (2), which can be laterally placed against at least one stop (19) arranged in the head component (1), thereby limiting the maximum rotation angle of the mandrel (2). A protrusion (271) is laterally molded at the cantilever (27), which at least partially covers the stop (19) of the head component (1) when the cantilever (27) rests against it. 19), wherein the valve body is formed by a rotatably arranged control disc (3) placed on an anti-torsional entry disc (4), characterized in that a disc (28) is molded at the end side of the spindle (2), and a drive member (281) is molded on the side of the disc (28) opposite to the spindle (2), which engages in a recess of the control disc (3), wherein the disc (28) axially abuts against a shoulder arranged in the head member (1).

2. The valve component according to claim 1, characterized in that, The valve components are used in sanitary equipment.

3. The valve component according to claim 1, characterized in that, One or two arc-shaped stops (19) are molded on the inner surface of the head component (1), and the end face of the stops (191) is formed accordingly.

4. The valve component according to any one of the preceding claims, characterized in that, The cantilever (27) has at least a partial T-shaped cross section, thereby forming protrusions (271) on both longitudinal sides.

5. The valve component according to claim 1, characterized in that, The shoulder is formed by at least one stop (19) molded on the inner surface of the head component (1).

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