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Patent Searching and Data


Title:
VALVE CONSTRUCTION
Document Type and Number:
WIPO Patent Application WO/2006/123012
Kind Code:
A1
Abstract:
A valve construction comprising a frame (1), which has which has one or more for pressurized medium arranged as valve working closing canal system, a control lever (2) to close and open the said canal systems and one or more electric or pneumatic operating switches fitted in connection with the valve control lever (2). To the electric or pneumatic operating switch connected to the control lever cable (3) is led or a piping system fitted to run inside the control lever (2) and further inside its possible tube portion (12)in order to run further into valve frame (1).

Inventors:
ROPPONEN VESA (FI)
Application Number:
PCT/FI2006/000159
Publication Date:
November 23, 2006
Filing Date:
May 17, 2006
Export Citation:
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Assignee:
POLARTEKNIK PMC OY AB (FI)
ROPPONEN VESA (FI)
International Classes:
F16K31/60; F15B13/042; F16K7/06; F16K11/16; G05G9/047; F16K
Foreign References:
JPS62274178A1987-11-28
US4590454A1986-05-20
GB2065272A1981-06-24
GB1104264A1968-02-21
EP1462408A12004-09-29
Other References:
See also references of EP 1915558A4
Attorney, Agent or Firm:
Nieminen, Taisto (Kehräsaari B, Tampere, FI)
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Claims:
CLAIMS
1. A valve construction comprising a frame, which has one or more closing canal systems arranged to work as valve for pressurized medium, a control lever (2) to close and open said canal systems and one or more electric or pneumatic operating switches fitted in connection with the valve control lever (2), whereby to the electric or pneumatic operating switch connected to the control lever a cable (3) is led or a piping system fitted to run inside the control lever (2) and also inside its possible tube portion (12) characterized in that cable (3) or the piping system is fitted to run further into valve frame (1) and inside the valve frame through it.
2. A valve construction according to claim 1 characterized in that control lever (2) and its tube (12) are tubular, whereby the rocker lever elements (9) connected to the control lever (2) tube are fitted outside the tube.
3. A valve construction according to claim 1 characterized in that cable (3) or the piping system of the pneumatic switch is fitted to run through the frame essentially in the direction of control lever (2) and its possible tube (12), when control lever (2) is in operating position.
4. A valve construction according to claim 1 characterized in that necessary tube inlets/outlets (7) and cable (3) outlet(s) are on the same side of valve frame (1) as on the bottom side.
5. A valve construction according to claim 1 characterized in that frame (1) of the valve construction has several valve houses (10) on the same side, whereby there is for cable (3) or the piping system of the pneumatic switch an own channel (4) in the space between valve houses (10) in the valve frame.
Description:
VALVE CONSTRUCTION

The invention relates to a valve construction comprising a frame, which has one or more closing canal systems arranged to work as valve for pressurized medium, a control lever to close and open said canal systems and one or more electric or pneumatic operating switches fitted in connection with the valve control lever, whereby to the electric or pneumatic operating switch, connected to the control lever, a cable is led or a piping system fitted to run inside the control ever and further inside its possible tube portion.

Previously known are valve constructions, which in the frame have valve houses, including the valve, intended for the medium, and these valves are steered into connection by means of the control lever fitted into the frame. The control lever has an impact direct into the frame and moves the valve stem inside the frame. In these control levers also electric switches are known, whereby their electric cabling is carried out from the control lever upper end some distance along the hollow control lever towards the valve frame and then the cable is taken out from the lever before the valve frame.

The disadvantaged of such a solution is that the cable gets out quite close to the hand grip point, whereby it is in a spot sensitive to damage. Further, during operation, there will be a bending spot also into the cable about in the above mentioned spot, which increases the possibility of cable damage. For instance the cable coming out from the lever cannot even otherwise, be shielded beside the seat in the vehicle cabin from unintentional tear.

By means of the valve construction according to the invention the above described disadvantages are avoided and the valve construction is characterized in that the cable or the piping system is fitted to run further into the valve frame and inside the valve frame through it.

The advantage of the invention is that the control lever becomes a, reliable handle, by means of which only turning motions are made, and the electric or pneumatic operating switches are in a known way in the upper end of the lever handle, for instance as push buttons, whereby they are easily feasible. The control lever including its handle portions

and possible tubes is on the valve frame without any visible cabling. The position of the valve houses in the valve frame in relation to the control lever position can be easily so arranged that a free route is left for the cable or piping system through the valve frame. The connection inlets/outlets and cable outlets in the valve frame are advantageously fitted on the same side of the valve frame.

In the following the invention is presented with reference to the enclosed drawing, where Figure 1 shows the valve construction viewed from the front and the side. Figure 2 shows the valve construction cut from the front and the side. Figure 3 shows the valve construction viewed from the under side. Figure 4 shows the valve construction cut from the front.

Figure 1 presents one valve frame 1 meant for compressed air and to which a turning control lever 2 is connected. Between them there is a folded rubber cover 6. There is in the upper part of lever portion 2, which is formed into a handle, a fitting 5 for connection of electric and pneumatic operating switches on top or on the side of the handle in a manner known per se. Figure 2 presents as sectional views a corresponding valve, from which channel 4 fitted inside the valve frame for cable 3 can be observed. Control lever 2 and he handle are hollow and likewise the extension tube of control lever 2, which inside the folded rubber portion 6 to reaches rocker joint 9 portion.

Figure 3 shows the bottom of the valve frame 1 in illustrated from the under side of the construction. There is in the bottom the outlet channel of cable 3 and four inlets/outlets 7 for compressed air, one coming, two going and one removing.

Figures 4 and 5 are shown to illustrate more exactly the feed-through of cable 3 from the control lever hollow tube 12 out through valve frame 1. There is in valve frame 1 two valve houses 10, which include the valve stems and shut-off parts (not shown), for closing and opening of the air-pressure duct led through house 10. Rocker joint part 9 above houses 10 is winding around lever 2 and tube 12 due to turning the motions. Rocker joint part 9 winds around shaft 8 (figure 5). Rocker joint part 9 presses by winding roll 11 downwards, whereby to the valve stem part an opening or closing motion is transmitted. Rocker joint part 9 has an open centre, in other words it is furnished with a hole, out of

which cable 3 is led to channel 4 between valve houses 10 and out from it. On use the cable gets a little bent after rocker joint part 9, but this place is sheltered from other stresses.

The valve construction can have several valve houses 10 for different mediums, even several levers with a cable feed-through according to the invention. The formatting of lever 2 is not restricted and it can even be of same material as far as rocker joint 9. 1 the lever switch is pneumatic, usually several air pipes led through hollow lever 2 and its through its hollow possible handle to the valve and through its frame.