GB2443199A

GB2443199A - Wall chaser with interchangeable power units

Info

Publication number: GB2443199A
Application number: GB0621382A
Authority: GB
Inventors: David Vincent Byrne
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2008-04-30
Anticipated expiration: 2026-10-27
Also published as: EP1920886A1; GB0621382D0; ATE430642T1; IE20070776A1; GB2443199B; DK1920886T3; EP1920886B1; ES2326757T3; DE602007001066D1

Abstract

A wall chaser 1 has universal connection means 2 to enable connection to a range of different power units (motors) P, with different connection flanges 30 and fixing members 31. The chaser connection means comprises a receiver 3 for receiving the power unit flange 30, a deformable collar 4 for engagement of the receiver 3 and flange 30, and a bracket 5 for fixing to the chaser 1 and the power unit fixing members 31.

Description

1 2443199 Title A chaser comprising a universal connection means.

Field of the Invention

The present invention relates to a chaser having a universal connection means to enable connection of the chaser with power units having different connection features.

Background

Various types of chasers are known which are normally adapted for connection to a particular manufacturer type of power unit, the chasers being provided by a manufacturer of both chasers and power units. Each power unit has a particular connection arrangement. As a result the user choice of chaser is normally limited to one suitable for connection to their preferred power unit.

Conversely if the user wishes to use a particular type of chaser, they must also choose a power unit suitable for use with that chaser.

There are therefore a number of problems with conventional chasers that need to be addressed.

Summary

These needs and others are addressed by a chaser in accordance with the teachings of the invention which comprises a universal connection means adapted to enable connection of the chaser with a plurality of different power units, each power unit having a different power unit connection flange and fixing members, wherein the chaser connection means comprises a receiver for receiving the power unit flange, a deformable collar for engagement of the receiver and flange, and a bracket for fixing to the chaser and the power unit fixing members.

The invention therefore provides a chaser comprising a universal connection means in accordance with claim 1. Advantageous embodiments are provided in the dependent claims thereto.

Brief Description Of The Drawings

The present invention will now be described with reference to the accompanying drawings in which: Figure 1 is an exploded perspective view of a chaser according to the invention; Figure 2 is a cross- sectional view from the side of a chaser according to the invention connected to a power unit flange; Figs. 3(a), 3(b), 3(c) and 3(d) are detailed views of a bracket of a chaser according to the invention; and Fig. 4 is an enlarged view of the collar of Fig. 1.

Detailed Description Of The Drawings

The invention will now be described with reference to an exemplary embodiment thereof which is provided to assist in an understanding of the teaching of the invention but is not intended to limit the scope of the invention in any way except as may be deemed necessary in the light of the appended claims.

Referring to the drawings, a chaser 1 according to the teaching of the invention comprises a universal chaser connection means 2 adapted to enable connection of the chaser with a plurality of different power units P. The power units are of the type provided by different manufacturers which generally have various arrangements at the connection portion thereof. The connection portion of a power unit P typically comprises a connection flange 30, extending outwardly from a proximal face 32 of the unit, and some arrangement of fixing members 31. The form of these connection features varies from manufacturer to manufacturer, for example, the connection flanges 30 may have different diameters.

According to a chaser in accordance with the teaching of the invention the universal chaser connection means 2 comprises a receiver 3 for receiving the power unit flange 30, a deformable collar 4 for engagement with the receiver and power unit flange, and a bracket 5 for fixing to both the chaser and the power unit fixing member.

The receiver 3 has a substantially annular form and has a presentation surface 3A that tapers inwardly from an opening 9 in a flange proximal face 3B in the direction of the head 20 of the chaser.

The collar 4 is desirably formed of a flexible material and is arranged for engagement between and with both the receiver 3 and power unit flange 30.

The collar 4 comprises an inner engagement member 6 for engagement with the power unit flange and an outer engagement member 7 for engagement with the receiver. The inner engagement member provides a mating surface 6A which is provided in a generally c-shaped form, and in use is adjacent to an outer surface 30A of the flange of the power unit P. The mating surface does not define a closed ring in that jaws 6B are provided which enable a modification of the dimensions of circumference defined by the mating surface.

By moving the jaws towards one another the circumference retracts whereas by moving them apart, the circumference expands. In this way the mating surface can be seated against a plurality of differently dimensioned power unit flanges 30. When mated with the appropriate power unit flange, the mating surface 6A is in intimate contact with the outer surface 30A of the power unit flange.

In this embodiment of Figure 1, a plurality of flexible members 7 extend outwardly from the inner engagement member of the collar to define the outer engagement member. The flexible members are arranged circumferentially spaced apart on the collar. The flexible members are provided so as to be deformable against the chaser receiver 3. Each of the flexible members include an inner surface 7A that is integrally formed with the inner engagement member, a flex region 7B that is extends outwardly from the inner surface in an arc and an outer surface 70 that is, in an un-deformed state substantially parallel with the inner surface 7A. In use, a presentation of the collar to the receiver causes the outer surface to flex inwardly towards the inner surface through contact with the presentation surface of the receiver.

The collar in this case includes a number of strengthening ribs 8, located spaced apart at intervals on the inner engagement member.

As mentioned above, the inner engagement member is deformable against the power unit flange 30. In this way the outer and inner circumferences defined by the collar can be changed as required to meet the requirements of the mating power unit flange and chaser receiver.

In use, the power unit flange 30 is inserted into the receiver 3 with the collar 4 located therebetween. The inner engagement member envelops and is mated against the outer surface 30A of the flange. As noted above the receiver 3 tapers inwardly from the opening 9, and as the flange 30 and collar 4 are moved forward into the receiver in the direction D the collar 4 engages positively with the appropriate portion of the tapered wall of the receiver 3 through a flexing of the flexible member and also with the power unit flange 30 through a closing of the jaws of the inner engagement member. In this way the collar is deformable in two dimensions, the first dimension provided by a closing the of the jaws and the second by the flexing of the flexible member, each being substantially 90 degrees out of phase with the other. The outer engagement member 7 of the collar is resilient to the receiver and deforms inwardly as the flange and collar are moved further into engagement with the receiver to provide a secure engagement between the collar and receiver face. At the same time the inner engagement member 6 of the collar engages with the power unit flange 30. As noted above the collar 4 is resilient, and the C-shaped form closes into engagement with the flange under the application of pressure on engagement between the receiver and the outer engagement member of the collar.

The collar 4 is designed and arranged so that the jaws 6B do not come into contact with each other in use. This is as a result of the dimensions of the collar chosen, the properties of resilience of material of the collar, and the arrangement of the inner and outer engagement members.

The provision of a tapered receiver 3 in combination with the deformable collar 4 allows for connection with power unit flanges of different diameter.

The use of the collar provides for a snug inter-engagement between the power unit and the chaser. Once this inter-engagement is achieved the two need to be maintained in position relative to one another. This is achieved by use of a the bracket 5.

The bracket 5 in this case has a generally disc shaped form for interfacing with the between the chaser and power unit so that in use a first back presentation surface 18 thereof abuts the proximal face 3B of the chaser, and a second front presentation surface 17 abuts the proximal face 32 of the power unit. An inner side edge 1 9A of generally circular form defines an opening 16 for receiving the flange 30 of the power unit. Fixing members 10, 11, 12 and 13 protrude outwardly at the outer side edge 1 9B of the bracket.

In this case, the bracket 5 comprises support arms 15 which extend substantially at right angles to the front surface 17 and located at the outer side edge 1 9B thereof. The support arms are provided located opposite to each other near the top and bottom of the bracket, being so arranged to embrace the connection portion of the power unit therebetween. The support arms 15 are desiraby resilient and deformable to facilitate connection to the power unit as required.

The bracket 5 comprises a first set of chaser fixing members 10, 11 and 13 for fixing the bracket to corresponding fixing members provided on the chaser, and a second set of power unit fixing members 12 arranged for connection to corresponding fixing members of a particular power unit.

In this illustrated embodiment, the bracket chaser fixing members comprise apertures 10, 11 and 13. In use, the apertures 10 and 11 are aligned to corresponding apertures 21 provided on the chaser and fixing pins, in this case screws 22 are secured therethrough. The chaser, in this case, further comprises a handle member 25 which is received in the aperture 13 of the bracket. The engagement of the handle member 25 in the aperture 13 provides for additional support and stability of the connection between the bracket and chaser, and furthermore advantageously facilitates dispersion of the load between the connected components.

In this case, the bracket power unit fixing members comprise apertures 12 provided on support arms 15 for connection to corresponding fixing members of the particular power unit. In use, the support arms 15 are passed over the connection portions at the top and bottom of the power unit so that the apertures 12 are aligned with corresponding one or more apertures 31 on the power unit, and a fixing pin or bolt is connected therethrough to secure the bracket to the power unit. As noted above the support arms 15 may be resilient to facilitate a snap fitting connection to the power unit.

The bracket 5 may comprise a single second set of power unit fixing members suitable for connection to one type of power unit. In which case, the user may be provided with a number of alternative brackets 5 to enable fixing to different types of power units. Alternatively a single bracket may comprise a plurality of sets of power unit fixing members.

The bracket 5, may be formed as a single element, of a suitable material for example, a metal or plastics material. Alternatively the connection portions may be connected to the main body of the bracket during manufacture.

The chaser having universal connection means according to the teaching of the invention has the advantage that it allows for the chaser to be connected to different types of power unit. This has the advantage of providing the user with increased flexibility. By providing a collar that is deformable in two dimensions, it is possible to modify both outer and inner diameters of the collar, such that it can be used to mate a plurality of different power units with a chaser.

Furthermore the bracket arrangement of the universal connection means of the invention is designed to provide a positive secure and stable connection between the connected components. The invention further has the advantage of reducing costs to the end user, by providing the user with the option of using the power unit of choice with the chaser.

The words comprises/comprising when used in this specification are to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

Claims

1. A chaser comprising a universal chaser connection means to enable connection of the chaser with a plurality of different power units, each power unit having a different power unit connection flange and fixing members, wherein the chaser connection means comprises a receiver for receiving the power unit flange, a deformable collar for engagement of the receiver and flange, and a bracket for fixing to the chaser and the power unit fixing members.

2. A chaser as claimed in claim 1 wherein the receiver comprises a substantially annular form.

3. A chaser as claimed in claims 1 or 2 wherein the receiver comprises a tapered form.

4. A chaser as claimed in claim 3 wherein the receiver tapers inwardly to the chaser head.

5. A chaser as claimed in any preceding claim wherein the receiver is integral with the body of the chaser.

6. A chaser as claimed in any preceding claim wherein the collar is configured to be seated in the receiver between the power unit flange and receiver.

7. A chaser as claimed in any preceding claim wherein the collar comprises an inner engagement member for engagement with the power unit flange and an outer engagement member for engagement with the receiver.

8. A chaser as claimed in claim 7 wherein the inner engagement member comprises a generally c-shaped form.

9. A chaser as claimed in any preceding claim wherein the collar is resilient.

10. A chaser as claimed in claims 7 to 9 wherein the inner engagement member is deformable against the power unit connection flange.

11. A chaser as claimed in claims 7 to 10 wherein the outer engagement member is deformable against the receiver.

12. A chaser as claimed in claims 7 to 11 wherein the inner engagement member comprises a plurality of flexible members extending outwardly therefrom to define the outer engagement member.

13. A chaser as claimed in claim 12 wherein the flexible members are circumferentially spaced apart.

14. A chaser as claimed in claims 12 or 13 wherein the flexible members are resilient to the chaser receiver.

15. A chaser according to any preceding claim wherein the collar is deformable in two dimensions.

16. A chaser as claimed in any preceding claim wherein the bracket comprises a first set of chaser fixing members for fixing the bracket to corresponding chaser fixing members, and one or more sets of second power unit fixing members, said or each set being arranged for fixing to fixing members of a particular type of power unit.

17. A chaser substantially as hereinbefore described with reference to the accompanying drawings.