Fuse holder

• US 5,338,228 A
• Filed: 10/12/1993
• Issued: 08/16/1994
• Est. Priority Date: 10/12/1993
• Status: Expired due to Term

• Current Assignee: Fluke Electronics Corporation (Fortive Corp.)
• Original Assignee: Amprobe Instrument
• Inventors: Pecukonis, Joseph P., Wright, Austin J. Jr.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US08/135,027
• Time in Patent Office: 308 Days
• Field of Search: 439/621, 439/622, 337/187, 337/188, 337/201, 337/213, 337/214, 337/196, 337/212
• US Class Current: 439/620.26
• CPC Class Codes: H01H 2085/2085 Holders for mounting a fuse on a printed circuit
• CPC Class Codes: H01H 85/547 with sliding fuse carrier

Abstract

A fuse holder retains and removably connects a fuse to fuse clips within an electrical device. The fuse holder includes a fuse drawer having an open top to hold the fuse. Openings in the fuse drawer are adapted to receive the fuse clips. A guide within the electrical device facilitates sliding the fuse drawer between an open position outside of the electrical device and a closed position within the device. In the closed position, the fuse clips extend through the openings in the fuse drawer and engage the fuse within the fuse drawer to close the electrical circuit within the electrical device. An individual is unable to contact the fuse when the fuse drawer is closed within the electrical device. Similarly, the fuse is disengaged from the fuse clips and the electrical circuit is broken when the fuse drawer is opened so that it is not possible for an individual to contact the fuse while the fuse is connected to the electrical circuit.

Claims

1. A fuse holder for removably retaining and electrically connecting a fuse in a housing of an electrical device, said fuse having electrical contacts, the housing having fuse clips for electrically and mechanically connecting to the fuse electrical contacts, said fuse holder comprising:

a fuse drawer having an interior volume, a top opening into the interior volume, and a support within the interior volume for receiving the fuse;

a guide attached to said housing and receiving said fuse drawer for slidable movement between a closed position in which the interior volume is positioned interiorly within said housing and an open position in which the interior volume is positioned substantially exteriorly of the said housing;

said fuse drawer defining openings positioned to allow said fuse clips to extend into said interior volume and engage said electrical contacts of a fuse positioned within the interior volume when said fuse drawer is in the closed position; and

said fuse drawer moving the electrical contacts of a fuse positioned within the interior volume to a position in which said fuse clips disengage from said electrical contacts when the fuse drawer is moved to the open position.

2. A fuse holder as defined in claim 1, wherein said support places the electrical contacts of a fuse positioned within the interior volume out of engagement with the fuse clips when the fuse is exposed at the exterior of said housing.

3. A fuse holder as defined in claim 1, wherein the engagement of the fuse clips with the electrical contacts of a fuse within the interior volume is operative to assist in holding the fuse drawer in the closed position.

4. A fuse holder as defined in claim 1, wherein said fuse drawer includes a guide tab, and wherein said guide defines an elongated slot for slidably retaining said guide tab and for preventing said fuse drawer from becoming detached from said guide when said fuse drawer is opened.

5. A fuse holder for removably retaining and electrically connecting a fuse in a housing of an electrical device, said fuse having electrical contacts, the housing having fuse clips for electrically and mechanically connecting to the fuse electrical contacts, said fuse holder comprising:

a fuse drawer having a front wall, a rear wall opposite said front wall, a bottom wall connecting said front and rear walls, and opposing end walls, said walls defining an interior volume having an open top for receiving said fuse, said fuse drawer having a length defined by the distance between said opposing end walls;

a guide attached to said housing and extending into said housing to facilitate sliding said fuse drawer between an open position withdrawn from said housing and a closed position within said housing, said guide aligning with said fuse clips within said housing to direct said rear wall of said fuse drawer toward said fuse clips;

said rear wall of said fuse drawer defining openings adapted to receive said fuse clips and allow said fuse clips to extend into said interior volume and engage said electrical contacts of a fuse positioned within the interior volume when said fuse drawer is in the closed position; and

said fuse drawer locating the electrical contacts of a fuse positioned within the interior volume to a position in which said fuse clips disengage from said electrical contacts when the fuse drawer is moved to the open position.

6. A fuse holder as defined in claim 5, wherein the engagement of the fuse clips with the electrical contacts of a fuse within the interior volume is operative to assist in holding the fuse drawer in the closed position.

7. A fuse holder as defined in claim 5, further including an elongated handle attached to said front wall for moving said fuse drawer between said open and closed positions.

8. A fuse holder as defined in claim 7, wherein said handle has a length dimension defined by two opposing ends, said length dimension being smaller than the length of said fuse drawer.

9. A fuse holder as defined in claim 8, wherein said handle is substantially flush with an exterior surface of said housing when said fuse drawer is closed, said opposing ends defining flanges to allow an individual to grip said handle when said fuse drawer is closed.

10. A fuse holder as defined in claim 5, wherein said bottom wall defines an access port to allow an object to be inserted within the interior volume and dislodge a fuse positioned within the interior volume toward said open top when said fuse drawer is opened.

11. A fuse holder as defined in claim 10, wherein said fuse drawer further includes two curved supports extending between said front and rear walls along said bottom wall and defining a middle section therebetween within said interior volume, said curved supports having a concave face directed toward said open top to provide a seat for receiving a fuse and positioning the electrical contacts of said fuse between said openings.

12. A fuse holder as defined in claim 11, wherein said curved supports place the electrical contacts of a fuse positioned within the interior volume out of engagement with the fuse clips when the fuse is exposed at the exterior of the housing.

13. A fuse holder as defined in claim 12, wherein said access port extends between said two curved supports to allow access to said middle section when said fuse drawer is opened.

14. A fuse holder as defined in claim 5, wherein said fuse drawer further includes a guide tab attached adjacent said rear wall, and wherein said guide defines an elongated slot for slidably retaining said guide tab as said fuse drawer moves between said open and said closed positions and for preventing said rear wall from becoming detached from said guide when said fuse drawer is opened.

15. A fuse holder for retaining and removably connecting a fuse to fuse clips located within a housing of an electrical device, said fuse having an elongated body and electrical contacts spaced along the body adapted for engagement with said fuse clips, said fuse holder comprising:

a fuse drawer having a front wall, a rear wall opposite said front wall, a bottom wall connecting said front and rear walls, and opposing end walls, said walls defining an interior volume having an open top for receiving said fuse, said fuse drawer having a length defined as the distance between said opposing end walls;

a guide attached to said housing and extending into said housing to facilitate sliding said fuse drawer between a closed position within said housing and an open position withdrawn from said housing, said guide aligning with said fuse clips within said housing to direct said rear wall of said fuse drawer toward said fuse clips;

said rear wall of said fuse drawer defining openings adapted to receive said fuse clips and allow said fuse clips to extend into said interior volume and engage said electrical contacts of a fuse positioned within the interior volume when said fuse drawer is in the closed position;

said fuse drawer locating the electrical contacts of a fuse positioned within the interior volume to a position in which said fuse clips disengage from said electrical contacts when the fuse drawer is moved to the open position;

said fuse drawer further including an elongated handle attached to said front wall for moving said fuse drawer between said open and closed positions, said handle having a length dimension defined by two opposing ends, said length dimension being smaller than the length of said fuse drawer, and said handle being substantially flush with an exterior surface of said housing when said fuse drawer is closed, and said handle defining flanges at said opposing ends to allow an individual to grip said handle when said fuse drawer is closed;

said fuse drawer further including curved supports extending between said front and rear walls along said bottom wall within said interior volume, said curved supports having a concave face directed toward said open top to provide a seat for receiving a fuse and positioning the electrical contacts of said fuse between said openings;

said bottom wall defining an access port to allow an object to be inserted within the interior volume and dislodge a fuse positioned on said curved supports toward said open top when said fuse drawer is opened;

said fuse drawer further including a guide tab attached adjacent said rear wall; and

said guide defining an elongated slot for slidably retaining said guide tab as said fuse drawer moves between said open and said closed positions and for preventing said rear wall from becoming detached from said guide when said fuse drawer is opened.