Fuse holder
A fuse holder is disclosed which includes a frame, spring and a limiter,the frame having a first contact member and a second contact member adapted to receive an end of the fuse between them, the spring being adapted to press the contact member against the fuse end, and the limiter being adapted to define the largest possible depth of the fuse end in the installation direction between the first and second contact members. The spring includes a substantially circular arch-formed ring spring adapted to also serve as the limiter.
1. A fuse holder comprising a frame, spring means and limiter means, the frame comprising a first contact member and a second contact member adapted to receive an end of a fuse between them, the spring means being adapted to press the contact members against the fuse end to achieve an electrically conductive connection between the contact members and the fuse end, and the limiter means being adapted to define a largest possible depth of the fuse end in an installation direction between the first and second contact members, wherein the spring means comprise a ring spring having substantially a form of a circular arch and serving as the limiter means;
wherein the frame is provided with slots for supporting a middle portion located between ends of the ring spring;
wherein the slots are provided with projections configured to prevent the ring spring from rotating around an axis passing via the ends; and
wherein the ring spring is placed in such a manner that when the fuse end is at said largest possible depth in the installation direction between the contact members, the fuse end is in contact with the middle portion located between the ends of the ring spring.
2. A fuse holder as claimed in claim 1 , wherein the ring spring is located substantially on a plane that is at a predetermined angle (α) relative to the installation direction of the fuse end.
3. A fuse holder as claimed in claim 2 , wherein said predetermined angle (α) is between 0 ° and 45°.
4. A fuse holder as claimed in claim 1 , wherein the frame is provided with means for holding the ends of the ring spring in place.
5. A fuse holder as claimed in claim 4 , wherein said means for holding the ends of the ring spring in place comprise two recesses provided in the frame, each recess being adapted to receive a corresponding end of the ring spring.
6. A fuse holder as claimed in claim 1 , wherein the means for supporting the middle portion located between the ends of the ring spring are adapted to support the middle portion of the ring spring in a direction opposite relative to the installation direction of the fuse end.
7. A fuse holder as claimed in claim 1 , wherein the cross-section of the frame is substantially U-shaped in such a manner that a first branch of the frame comprises the first contact member, and a second branch of the frame comprises the second contact member.