Aligned attachment of a component for instance in a vehicle
Publication Date: 2010-Oct-05
The IP.com Prior Art Database
To enable mounting of component it is of vital importance that the components can fit together by proper dimensioning of the components and to set proper tolerances. It is also important that the attachment not causes the components to be exerted to loads cased by the attachment per see, which could be the case if the components not are properly aligned to each other.
Page 01 of 3
Aligned attachment of a component for instance in a vehicle.
In vehicles a lot of different components are attached together.
To enable easy mounting of such component it is of vital importance that such components can fit together by proper dimensioning of the components and to set proper tolerances. It is also important that the components are securely attached. Further it is important that the attachment not causes the components to be exerted to loads cased by the attachment per see, which could be the case if the components not are properly aligned to each other.
In heavy vehicles many component are quite large and heavy and the components are exposed to heavy loads. This in turn necessitates that attachment of such components must be extraordinary strong, while at the same time enable easy mounting at production.
The following is one example how to attach a catalyst 1 in an exhaust system of an engine in a vehicle. In this attachment the catalyst is securely attached to a mounting plate 12 which is to be attached to a bracket 10 securely attached to the engine. One problem is that the mounting plate and the bracket are not always properly aligned to each other. This misalignment can be that the distance between the bracket 10 and the plate 12 is not correct and it can also be that they are not parallel to each other. It can also be that they are not in a correct parallel position relative to each other. The following is a solution that takes care of all these types of misalignment and will enable an attachment that not will cause the parts to be exerted to unnecessary loads caused by the mounting.
Fig. 1 shows the attachment in detail. A pin 14 with external threads (or a screw) is attached to the mounting plate 12 and extends in a hole 16 in the bracket 10. The diameter of the hole 16 is larger than the diameter of the pin 14. On opposite sides of the bracket 10 are attached two nuts 18, 20 screwed onto the pin 14. Each nut 18, 20 has a spherical outer surface on the sides directed towards the bracket 10. On the surfaces directed from the bracket the nuts have a hexagonal form enable fastening with conventional tools. Between each nut and the brackets are arranged two washers 22, 24. Also these washers 22,24 have inner diameters larger than the diameter of the pin 14. The washers each have spherical surfaces cooperating with the spherical outer surfaces on the nuts.
During mounting a first one nut 18 is screwed onto the pin 14 and a first one washer 22 is mounted onto the pin 14. Thereafter the pin is introduced into the hole 16 and the other washer 24 and the other nut 20 are mounted onto the pin 14. In this position the bracket 10 and the plate 12 are easily movable relative to each other. Thereafter the brack...