Enclosure and mounting member for printed circuit boards

• US 4,468,718 A
• Filed: 04/13/1982
• Issued: 08/28/1984
• Est. Priority Date: 04/13/1982
• Status: Expired due to Fees

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: General Electric Company
• Inventors: Main, John E.
• Primary Examiner(s): Kucia, R. R.
• Application Number:
  US06/367,877
• Time in Patent Office: 868 Days
• Field of Search: 361/415, 361/399, 361/394, 361/395, 361/412, 361/413
• US Class Current: 361/757
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/0018 having an electronic display

Abstract

An enclosure and mounting member for printed circuit boards has a first housing member defining the outer front of the enclosure and may have an aperture therein for exposing a front control panel. A second housing member defines the outer rear surface of the enclosure. A front control panel and each of the printed circuit boards held within the enclosure have irregularities such as shallow recesses in opposite outer edges. At least two mounting members are provided, each having a stem portion connectable to the first housing member and a flange portion extending perpendicularly from the stem portion connectable to the second housing member. The stem portions each have spaced irregularities such as pairs of notches which are congruent with and/or otherwise mated to respectively corresponding irregularities of the front panel and each of the printed circuit boards. The irregularities of the mounting members cooperate with the mated irregularities of the front control panel and the printed circuit boards for holding the front control panel and the printed circuit boards in substantially parallel, spaced, planes.

Claims

1. An enclosure for an electrical device having at least one printed circuit board, comprising:

first and second housing members cooperating to define the enclosure for the electrical device;

at least two mounting members for joining said first and second housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said first and second housing members, each mounting member extended from said first housing member and including means adapted to cooperate with means associated with said circuit board for holding said circuit board at said predetermined position; and

means for attaching said second housing member to said mounting members wherein the width of the mounting members include notched tabs therealong, the length of which notches are substantially the same as the thickness of the circuit board.

2. An enclosure as in claim 1 wherein the mounting members are at least in part integrally formed with said first housing member.

3. An enclosure as in claim 1 wherein the mounting members include individually formed mounting members and further include means for attaching said individually formed mounting members to said first housing member.

4. An enclosure as in claim 1 wherein the mounting members include notches along their widths, the length of which notches are substantially the same as the thickness of the circuit board, and wherein the circuit board includes shallow recesses the length of which are substantially the same as said notched width of said mounting members, and wherein the notches of the mounting members cooperate with the shallow recesses of the circuit board to hold said circuit board in the predetermined position.

5. An enclosure as in claim 1 or 4 wherein the notches of the mounting members are located such that the circuit board is spaced from both the first and second housing members.

6. An enclosure as in claim 5 wherein the mounting members have a plurality of notches for holding a plurality of circuit boards in a predetermined spaced relationship.

7. An enclosure for an electrical device having at least one printed circuit board, comprising:

first and second housing members cooperating to define the enclosure for the electrical device;

at least two mounting members for joining said first and second housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said first and second housing members, each mounting member extended from said first housing member and including means adapted to cooperate with means associated with said circuit board for holding said circuit board at said predetermined position; and

means for attaching said second housing member to said mounting members wherein the mounting members include L-shaped mounting members having a stem portion extending from the first housing member and a flange portion having a threaded hole for cooperating with the means for attaching said second housing member for securing said second housing member to said flange portion.

8. Apparatus for mounting and enclosing an electrical printed circuit board behind a front control panel, said apparatus comprising:

a front control panel having first irregularities in opposite outer edges thereof;

a printed circuit board having second irregularities in opposite outer edges thereof;

a front housing member defining the front of a printed circuit board enclosure and having an aperture therein for exposing said front control panel;

a back housing member defining the outer rear surface of said enclosure;

at least two mounting members for joining said front and back housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said front and back housing members, each such mounting member including spaced irregularities which are mated to said first and second irregularities, respectively;

said mated irregularities on said mounting members, control panel and printed circuit board being in respective mutual contact so as to define substantially parallel planes for said front control panel and said printed circuit board, and

means for securing said mounting members to said front and back housing members.

9. Apparatus as in claim 8 wherein each said mounting member comprises an elongated main body portion having spaced irregularities formed therealong.

10. Apparatus as in claim 9 wherein said main body portion comprises a substantially rectangular body of metal having pairs of opposing notches formed in its outer edges at locations spaced therealong.

11. Apparatus as in claim 9 or 10 wherein said means for securing comprises two threaded apertures in each mounting member.

12. Apparatus as in claim 11 wherein said elongated main body portion includes a right-angle bent section at one end, wherein one of said threaded apertures is located within said main body portion between said spaced irregularities and wherein another of said threaded apertures is located in said right-angle bent section.

13. A mounting apparatus according to claim 8 wherein each mounting member comprises:

an elongated main body portion having spaced-apart irregularities formed therealong and designed to mate with irregularities in the outer edges of said electrical circuit boards, and

attachment means for physically securing said main body portion to said outer enclosure.

14. A mounting apparatus as in claim 13 wherein said main body portion comprises a substantially rectangular body of metal having pairs of opposing notches formed in outer edges thereof at locations spaced therealong.

15. A mounting apparatus as in claim 13 or 14 wherein said attachment means comprises two threaded apertures.

16. A mounting apparatus as in claim 15 wherein said elongated main body portion includes a right angle bent section at one end, wherein one of said threaded apertures is located within said main body portion between said spaced-apart irregularities and wherein another of said threaded apertures is located in said right-angle bent section.

17. A mounting apparatus according to claim 8 wherein each mounting member comprises:

a stem portion dimensioned to be secured to and extend from the first housing member, the width of the stem portion having notched tabs therealong, the length of which notches are substantially the same as the thickness of the circuit board, said notches of said tab cooperating with said circuit board for holding said circuit board in a predetermined position; and

a flange portion extending perpendicularly from said stem portion for attachment to said second housing member.

18. A mounting apparatus according to claim 8 wherein each mounting member comprises:

a stem portion dimensioned to be secured to and extend from the first housing member, the width of the stem portion having notches therealong, the length of which notches are substantially the same as the thickness of the circuit board, said notches of said stem portion cooperating with the notches of said printed circuit board, the length of which notches is substantially equal to the notched width of said stem for holding said circuit board in a predetermined position; and

a flange portion extending at an angle from said stem portion for attachment to said second housing member.

19. A mounting apparatus as in claim 17 or 18 wherein the flange portion includes a threaded hole for facilitating the attachment of the second housing member.

20. A mounting apparatus as in claim 17 or 18 wherein the stem portion includes a threaded hole for facilitating attachment to the first housing member.

21. A mounting member as in claim 17 or 18 including a plurality of pairs of notches spaced apart along said stem for holding a plurality of circuit boards in a predetermined spaced relationship.

22. A mounting member as in claim 17 or 18 wherein said mounting member is made of metal.

23. A mounting member as in claim 17 or 18 wherein said mounting member is made of plastic.

24. An enclosure for an electrical device having at least one printed circuit board, comprising:

first and second housing members cooperating to define the enclosure for the electrical device;

at least two mounting members for joining said first and second housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said first and second housing members, each mounting member extended from said first housing member and including means adapted to cooperate with means associated with said circuit board for holding said circuit board at said predetermined position; and

means for attaching said second housing member to said mounting members wherein each mounting member comprises;

an elongated main body portion having spaced-apart irregularities formed therealong for mating with irregularities in the outer edges of said printed circuit board, and

attachment means for physically securing said main body portion to said first and second housing members.

25. An enclosure as in claim 24 wherein said main body portion comprises a substantially rectangular body of metal having pairs of opposing notches formed in outer edges thereof at locations spaced therealong.

26. An enclosure as in claim 24 or 25 wherein said attachment means comprises two threaded apertures.

27. An enclosure as in claim 26 wherein said elongated main body portion includes a right angle bent section at one end, wherein one of said threaded apertures is located within said main body portion between said spaced-apart irregularities and wherein another of said threaded apertures is located in said right-angle bent section.

28. An enclosure for an electrical device having at least one printed circuit board, comprising:

first and second housing members cooperating to define the enclosure for the electrical device;

at least two mouting members for joining said first and second housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said first and second housing members, each mounting member extended from said first housing member and including means adapted to cooperate with means associated with said circuit board for holding said circuit board at said predetermined position; and

means for attaching said second housing member to said mounting members wherein each mounting member comprises;

a stem portion dimensioned to be secured to and extended from the first housing member, the width of the stem portion having notched tabs therealong, the length of which notches are substantially the same as the thickness of the printed circuit board, said notches of said tabs cooperating with said circuit board for holding said circuit board at said predetermined position; and

a flange portion extending perpendicularly from said step portion for attachment to said second housing member.

30. An enclosure as in claim 28 or 29 wherein the flange portion includes a threaded hole for facilitating the attachment of the second housing member.

31. An enclosure as in claim 28 or 29 wherein the stem portion includes a threaded hole for facilitating attachment to the first housing member.

32. An enclosure as in claim 28 or 29 including a plurality of pairs of notches spaced apart along said stem for holding a plurality of circuit boards in a predetermined spaced relationship.

33. A mounting member as in claim 28 or 29 wherein said mounting member is made of metal.

34. A mounting member as in claim 28 or 29 wherein said mounting member is made of plastic.

29. An enclosure for an electrical device having at least one printed circuit board, comprising:

first and second housing members cooperating to define the enclosure for the electrical device;

at least two mounting members for joining said first and second housing members by providing rigid support thereto and holding said printed circuit board at a predetermined position between said first and second housing members, each mounting member extended from said first housing member and including means adapted to cooperate with means associated with said circuit board for holding said circuit board at said predetermined position; and

means for attaching said second housing member to said mounting members wherein each mounting member comprises;

a stem portion dimensioned to be secured to and extend from the first housing member, the width of the stem portion having notches therealong, the length of which notches is substantially equal to the notched width of said stem for holding said circuit board in a predetermined position; and

a flange portion extending at an angle from said stem portion for attachment to said second housing member.