GB1566402A

GB1566402A - Flow control valves

Info

Publication number: GB1566402A
Application number: GB2808/76A
Authority: GB
Original assignee: Western Thomson Controls Ltd
Current assignee: Western Thomson Controls Ltd
Priority date: 1976-01-24
Filing date: 1976-01-24
Publication date: 1980-04-30
Also published as: IT1143630B; FR2339117A1; SE7700653L

Description

(54) IMPROVEMENTS IN OR RELATING TO FLOW CONTROL VALVES (71) We, WESTERN-THOMSON CONTROLS LIMITED, a British Company of The Aerodrome, Headley Road East, Woodley. Reading, Berkshire, RG5 4SN, do hereby declare the invention for which we pray that a Patent mav be granted to us and the method by which it is to be performed to be particularly described in and by the following statement: The invention relates to flow control valves particularly but not essentially for motor vehicles. and to the method and manner of securing such flow control valves in a bore, for example a bore provided in the cylinder head of an internal combustion engine in which they are fitted. The flow control valves to which the present invention particularly relates are those of the kind which are described in our British Patent 1077009.

Various alternative ways for securing flow control valves to the cylinder blocks of engines are possible, but the invention provides a simple and effective improved method for such fixing and for locating the flow control valve body within the water channels of the cylinder block of an internal combustion engine.

The invention provides a flow control valve comprising a valve body for insertion in a bore of a block in which the valve is to be mounted, a flange around the valve body for abutting an end face of the block to locate the valve axiallv in the bore, a sealing ring in an annular groove in the valve body, and clamping means for overlapping a part of the flange to clamp it against the end face of the block thereby to secure the valve in the bore said clamping means comprising a single bolt having a head which head either directly or through an intermediate member overlaps a part of the flange. The invention is illustrated by the accompanying drawings.

Of those drawings Figure 1 is an axial section through a flow control valve of the invention shown located within a cylinder block or head of an internal combustion engine: Figure 2 is a plan view of the valve of Figure 1; Figure 3 is a side view of the valve of Figure 1; Figure 4 is a side elevation of another flow control valve of the invention secured in a cylinder block; and Figure 5 is a plan view of the valve of Figure 4.

The flow control valve of Figures 1 to 3 consists essentially of a body portion B having a thermal-actuator device A of the kind which is illustrated. described and claimed in British Patent 1077009 and which does not form further part of the present invention.

In Figure 1 the body B is provided with a groove 3 which extends circumferentially around the body 1 immediately beneath a flange 9. Located in the groove 3 is a round-section sealing member 2 of rubber or similar plastics material. This sealing member 2 is inserted into the groove and when it is desired to insert the flow control member into the conduit 12 of a cylinder block 11 of an internal combustion engine, the sealing member is trapped in a parallel sided plain bore thus forming a positive seal between the coolant within the engine and atmosphere.

The flow control valve body is secured to the cylinder block 11 by the flange 9 which has an aperture 10 formed in a radially extended zone at one end thereof through which a nut or screw 4 is passed to extend into a tapped hole formed in the cylinder block 11 thus firmly securing the flow control valve in the bore in the cylinder block. In this way a secure, fluid-tight and accurately located fixing can be achieved with the use of only one fixing bolt. This provides a distinct advantage in ease and rapidity of assembly. with no loss of accuracy of location.

In the alternative construction illustrated in Figures 4 and 5 a wider circumferential flange 7 is provided than the flange 9 of Figures 1 to 3. and a bifurcated clamp 6 has two rounded nib portions which press down at diametrically opposite points onto the flange 7. The clamp 6 is profiled to provide two diametrically opposite points of contact with the flange and a line of contact with the block, the points of contact and line of contact being on mutually opposite sides of an aperture for the bolt. The clamp 6 is secured to a cylinder block 11 by a bolt 8 extending into a tapped hole in the cylinder block 11. The fixing thus applies the clamping force on diametrically opposite sides of the valve body B, which reduces any ten dencv of the body to twist in the bore.

The flow control valve bodies B are provided with an upstanding flange with a peripheral rim I which permits a rubber or other similar material hose to be secured thereto and damped by a contracting ring.

It is thought that the present invention provides improvernents in flow control valves, such as those of the kind which are described in British Patent 1077009. bv the provision of the sealing ring 2 and the alternative methods of securing the flow control valve body to a cylinder flange block.

WHAT WE CLAIM IS: 1. A flow control valve comprising a valve body for insertion in a bore of a block in which the valve is to be mounted. a flange around the valve body for abutting an end face of the block to locate the valve axially in the bore, a sealing ring in an annular groove in the valve body, and clamping means for overlapping a part of the flange to clamp it against the end face of the block therebv to secure the valve in the bore, said clamping means comprising a single bolt having a head which head either directly or through an intermediate member overlaps a part of the flange.

2. A flow control valve according to claim 1. wherein the flange has a radially extended zone with an aperture or slot for locating a stem portion of the bolt.

3. A flow control valve according to claim 1, wherein the intermediate member comprises a bifurcated member for lapping the flange at zones on opposite sides of a central axis thereof, said single bolt clamping the bifurcated member against the flange and against the block.

A. A flow control valve according to claim 3. wherein the bifurcated member is profiled to provide two diametrically opposite points of contact with the flange and a line of contact with the block, the points of contact and line of contact being on mutually opposite sides of an aperture for the bolt.

5. A flow control valve for a motor vehicle, substantially as described herein with reference to the accompanying drawings.

6. A method of securing a flow control valve to a cylinder block of a motor vehicle, substantially as described herein with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. rapidity of assembly. with no loss of accuracy of location. In the alternative construction illustrated in Figures 4 and 5 a wider circumferential flange 7 is provided than the flange 9 of Figures 1 to 3. and a bifurcated clamp 6 has two rounded nib portions which press down at diametrically opposite points onto the flange 7. The clamp 6 is profiled to provide two diametrically opposite points of contact with the flange and a line of contact with the block, the points of contact and line of contact being on mutually opposite sides of an aperture for the bolt. The clamp 6 is secured to a cylinder block 11 by a bolt 8 extending into a tapped hole in the cylinder block 11. The fixing thus applies the clamping force on diametrically opposite sides of the valve body B, which reduces any ten dencv of the body to twist in the bore. The flow control valve bodies B are provided with an upstanding flange with a peripheral rim I which permits a rubber or other similar material hose to be secured thereto and damped by a contracting ring. It is thought that the present invention provides improvernents in flow control valves, such as those of the kind which are described in British Patent 1077009. bv the provision of the sealing ring 2 and the alternative methods of securing the flow control valve body to a cylinder flange block. WHAT WE CLAIM IS:

1. A flow control valve comprising a valve body for insertion in a bore of a block in which the valve is to be mounted. a flange around the valve body for abutting an end face of the block to locate the valve axially in the bore, a sealing ring in an annular groove in the valve body, and clamping means for overlapping a part of the flange to clamp it against the end face of the block therebv to secure the valve in the bore, said clamping means comprising a single bolt having a head which head either directly or through an intermediate member overlaps a part of the flange.