DE1750043C3 - Upper valve part with a rotary handle having a handle recess and a plastic body inserted into the handle recess - Google Patents

Description

The invention relates to an upper valve part with a rotary handle having a handle recess, a on the spindle operated by the rotary handle and a spindle inserted into the handle recess plugged-in plastic body. the longitudinally selling slots of limited length and radially inwardly and outwardly protruding projections for engagement in groove-like depressions in the handle recess and in the spindle.

In the case of such upper valve parts, the plastic body is used; for thermal insulation of the rotary handle from the valve. The plastic body must also meet the following two requirements: it must once enable the rotary movement to be transmitted from the rotary handle to the valve spindle; on the other hand may inadvertent withdrawal of the turning handle of the Kunststoffkorper and of the valve spindle in Axialrich- tung not be possible.

A valve cover of the aforementioned type is known from the German utility model specification 1,980,487. In the known upper valve part, the plastic body is designed as a socket . A neck with a collar forming the outwardly protruding projections is integrally formed on the closed end face of the socket. The open end face has projections protruding from the inside. The socket is unieri'-iit through several longitudinal slots on both ends.

In the case of the known plastic body, the conditions mentioned at the beginning with regard to the mechanical load-bearing capacity in the turning and pulling directions of the turning handle are only incompletely fulfilled: the narrow collar with which the plastic body rests on a shoulder in the turning handle, white, but a slight one Support surface on. In order to reduce the risk of the twist grip being pulled off the plastic body, a wedge is driven between the Lär -issc-hütze in the known Ventiloberlei, which is intended to keep the projections pressed outwards. On the opposite side, the longitudinal slots protrude far into the area of an external polygon on the spindle. This part of the plastic body can therefore limit the transfer of the rotary movement \ ~ m the rotary handle to the valve spindle! contribute, as it spreads when exerted. In order to keep this spreading within limits, the rotary handle has a part protruding in the shape of a cylinder into the recess. of the application of the well-known. Valve upper part? limited to certain twist grips. This restriction gives; also because the outwardly and inwardly protruding projections are provided on both end faces of the synthetic body, which results in a relatively large overall length.

The invention is based on the object cm Further develop valve upper part of the type mentioned at the beginning. that its plastic body is functionally reliable between the twist grip without additional elements and valve spindle can be inserted and fastened.

This object is achieved according to the invention once in that the plastic body on the Rotary handle facing the end of two concentric * "h arranged by an annular gap from each other separate wall parts consists, which are penetrated by the slots and of which the outer Wall part which has the outward, the inner wall part the inwardly protruding protrusions;

on the other hand, in that the wall of the plastic body only on the end face facing the rotary handle from the slots in the holding area! is. of which one has the outwardly protruding projection, the adjacent one the inwardly protruding Has projection.

In both of the aforementioned solutions, protrusions are only provided on one end face of the plastic body. The plastic body is thereby shortened by the amount required for a holder on the opposite end face; Overall length. Rather, the area of the opposite end face, which is not interrupted by longitudinal slots, is available for the transmission of the rotary movement. There are also no additional elements required for fastening the plastic body on the valve spindle and in the rotary handle. As a result, the plastic body does not restrict the rest of the configuration of the valve upper part. The upper valve part with the concentrically arranged wall parts separated from one another by an annular gap has the further advantage that the resistance to pulling off the rotary handle in the axial direction is optimal, since the outwardly protruding protrusions in

a ring of relatively large diameter, which is only interrupted by the slots, rest on the rotary handle. The upper part of the valve with the alternately after outwardly and inwardly protruding projections has the further advantage that the recess in the Rotary handle only needs to have a relatively small diameter.

Embodiments of the invention are in Drawing and are described in detail below. It shows "

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body 5 a.

1 sheet of drawings

Claims (2)

Paieman prudio: 1. Veinilobertei! with a rotary handle having a handle recess, a spindle operated via the rotary handle and a spindle inserted into the handle recess on the lockers! plugged. Plastic cap !, which has slits delimited in the longitudinal direction as well as radially inwardly and outwardly projecting projections for engagement in groove-like depressions in the handle recess and in the spindle, characterized in that the plastic body (5) on the rotary handle (4) facing end face consists of two concentrically arranged wall parts (8, 9) separated from one another by an annular gap (6), through which slots (10) pass and around which the outer wall part '8 | the outward, the inner wall part (9), the inwardly protruding projections (8 rt. *) α) . 2. Valve cover with a rotary handle having a handle recess, a spindle operated via the rotary handle and a spindle inserted into the handle recess on the lockers! plugged-in plastic body. the longitudinally serlaufende slots of limited length and radially inwardly and outwardly projecting projections for engagement ^; Has n groove-like recesses in the G rilf recess and in the spindle. characterized in that '; e wall of the plastic body 5 a) only at the rotary handle (4) end facing vi> n slots is divided into holding members!. each of which has the outwardly protruding projection (12). the adjacent has the inwardly protruding projection (14).