Mounting clips for use with electromagnetic interference shielding and methods of using the same

• US 7,501,587 B2
• Filed: 04/16/2007
• Issued: 03/10/2009
• Est. Priority Date: 04/16/2007
• Status: Active Grant

• Current Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Original Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Inventors: English, Gerald R.
• Primary Examiner(s): Ngo; Hung V
• Application Number:
  US11/735,827
• Publication Number:
  US 20080251893A1
• Time in Patent Office: 694 Days
• Field of Search: 174/350, 174/377, 174/354, 174/355, 174/369, 174/371, 174/372, 174/382, 361/816, 361/818, 361/800
• US Class Current: 174/354
• CPC Class Codes: H05K 3/341 Surface mounted components
• CPC Class Codes: H05K 9/0032 having multiple parts, e.g. frames mating with lids
• CPC Class Codes: Y10T 29/49146 with encapsulating, e.g., potting, etc.

Abstract

According to various aspects, exemplary embodiments are provided of clips that may be compatible with surface mount technology. The clips may be surface mountable to a substrate for allowing repeated releasable attachment and detachment of a shielding structure thereto. In one exemplary embodiment, a clip generally includes a base member having generally opposed first and second side edge portions. Two or more arms extend generally upwardly in a first direction from the base member. The clip also includes a generally flat pick-up surface configured to enable the clip to be picked up by a head associated with pick-and-place equipment.

Claims

1. A clip compatible with surface mount technology and surface mountable to a substrate for allowing repeated releasable attachment and detachment of a shielding structure thereto, the clip comprising:

a base member having generally opposed first and second side edge portions;

two or more arms extending generally upwardly in a first direction from the base member, the two or more arms including first and second arms extending generally upwardly from the respective first and second side edge portions of the base member such that the first and second arms are offset in an alternating arrangement along a length of the base member, the first and second arms having overlapping contact apexes for squeezing opposite surfaces of a wall portion of the shielding structure when the shielding structure'"'"'s wall portion is positioned therebetween;

first and second stabilizers extending generally horizontally outwardly from the second edge portion of the base member at locations generally opposing corresponding ones of the two or more arms, the first and second stabilizers configured to help stabilize the clips positioning on the substrate during installation;

a generally flat pick-up surface extending generally horizontally from the base member in a second direction substantially orthogonal to the first direction, the pick-up surface extending outwardly beyond the first edge portion of the base member, the pick-up surface longitudinally disposed generally between the first and second stabilizers, the pick-up surface configured to enable the clip to be picked up by a head associated with pick-and-place equipment; and

locking structure on at least one of the two or more arms configured to engage the shielding structure for helping releasably secure the shielding structure to the clip when the shielding structure'"'"'s wall portion is positioned between the contact apexes of the first and second arms.

2. The clip of claim 1, wherein the pick-up surface is substantially coplanar with an upper surface of the base member.

3. The clip of claim 1, wherein the clip has a monolithic construction.

4. The clip of claim 1, wherein the contact apex of at least one of the first and second arms is configured so as to extend across a longitudinal centerline axis of the base member.

5. The clip of claim 1, wherein at least one of the first and second arms include at least one camming surface portion configured to contact the shielding structure'"'"'s wall portion during installation, the contact causing relative movement of the first and second arms generally away from each other to thereby facilitate positioning of the shielding structure'"'"'s wall portion generally between the first and second arms.

6. The clip of claim 1, wherein the locking structure includes at least one protrusion configured to be engagingly received within a corresponding opening within the shielding structure'"'"'s wall portion when the shielding structure'"'"'s wall portion is positioned between the contact apexes of the first and second arms.

7. The clip of claim 1, wherein the locking structure includes at least one opening configured to engagingly receive at least one protrusion of the shielding structure'"'"'s wall portion when the shielding structure'"'"'s wall portion is positioned between the contact apexes of the first and second arms.

8. The clip of claim 1, wherein the two or more arms further comprise a third arm extending upwardly from the first side edge portion of the base member, the third arm being offset from the first and second arms along the length of the base member.

9. The clip of claim 1, wherein the two or more arms comprise multiple arms alternatingly extending from the generally opposing first and second side edge portions of the base member in an offset alternating configuration.

10. The clip of claim 1, wherein the base member includes one or more openings for allowing solder to form a connection between the base member and the substrate.

11. The clip of claim 1 in combination with a carrier tape for transporting the clip, the carrier tape having at least one pocket with an opening into the pocket and in which is positioned the clip of claim 1 such that the pick-up area is adjacent the opening into the pocket and accessible to a head associated with pick-and-place equipment for retrieval of the clip from the pocket.

12. The clip of claim 1, wherein the vertical force needed to insert the shielding structure'"'"'s wall portion generally between the arms of the clip is less than the vertical force required to remove the shielding structure'"'"'s wall portion from the clip.

13. The clip of claim 1, wherein the pick-up surface extends from the base member at a location generally opposing at least one of the arms.

14. An electrical device comprising a printed circuit board, a shielding structure having a wall portion, and the clip of claim 1, wherein the clip is surface mounted to the printed circuit board, and wherein the wall portion of the shielding structure is positioned between the contact apexes of the first and second arms of the clip, with the clip'"'"'s locking structure engaged with the shielding structure thereby helping releasably secure the shielding structure to the clip when the shielding structure'"'"'s wall portion is positioned.

15. A clip compatible with surface mount technology and surface mountable to a substrate for allowing repeated releasable attachment and detachment of a shielding structure thereto, the clip comprising:

a base member having generally opposed first and second side edge portions;

two or more arms extending generally upwardly in a first direction from the base member, the two or more arms including first and second arms extending generally upwardly from the respective first and second side edge portions of the base member such that the first and second arms are offset in an alternating arrangement along a length of the base member, the first and second arms having overlapping contact apexes for squeezing opposite surfaces of a wall portion of the shielding structure when the shielding structure'"'"'s wall portion is positioned therebetween;

a substantially flat pick-up surface extending generally horizontally from the base member in a second direction substantially orthogonal to the first direction, the pick-up surface configured to enable the clip to be picked up by a head associated with pick-and-place equipment; and

at least one stabilizer extending generally horizontally from the base member in the second direction at a location generally opposing at least one of the arms, the at least one stabilizer configured to help stabilize the clip'"'"'s positioning on the substrate during installation;

wherein the pick-up surface extends outwardly beyond the first edge portion of the base member;

wherein the at least one stabilizer comprises first and second stabilizers extending generally horizontally outwardly from the second edge portion of the base member; and

wherein the pick-up surface is longitudinally disposed generally between the first and second stabilizers.

16. The clip of claim 15, wherein the at least one stabilizer is substantially coplanar with the base member.

17. An electrical device comprising a printed circuit board, a shielding structure having a wall portion, and the clip of claim 15, wherein the clip is surface mounted to the printed circuit board, and wherein the wall portion of the shielding structure is positioned between the contact apexes of the first and second arms of the clip.

18. A clip compatible with surface mount technology and surface mountable to a substrate for allowing repeated releasable attachment and detachment of a shielding structure thereto, the clip comprising:

a base member having generally opposed first and second side edge portions;

two or more arms extending generally upwardly in a first direction from the base member, the two or more arms including first and second arms extending generally upwardly from the respective first and second side edge portions of the base member such that the first and second arms are offset in an alternating arrangement along a length of the base member, the first and second arms having overlapping contact apexes for squeezing opposite surfaces of a wall portion of the shielding structure when the shielding structure'"'"'s wall portion is positioned therebetween; and

first and second stabilizers extending generally horizontally outwardly from the second edge portion of the base member at locations generally opposing corresponding ones of the two or more arms, the first and second stabilizers configured to help stabilize the clip'"'"'s positioning on the substrate during installation;

a substantially flat pick-up surface configured to enable the clip to be picked up by a head associated with pick-and-place equipment, the pick-up surface extending generally horizontally from the base member in a second direction substantially orthogonal to the first direction and at a location substantially aligned with at least one of the arms, the pick-up surface extending outwardly beyond the first edge portion of the base member, the pick-up surface longitudinally disposed generally between the first and second stabilizers.

19. The clip of claim 18, wherein the pick-up surface is substantially coplanar with an upper surface of the base member.

20. The clip of claim 19, further comprising a third arm extending generally upwardly from the first side edge portion of the base member, the third arm being offset from the first and second arms along the length of the base member, and wherein the pick-up surface is longitudinally disposed generally between the first and third arms.

21. The clip of claim 18, wherein the pick-up surface extends a lateral distance beyond the base member greater than that of the arms.

22. The clip of claim 18, wherein the pick-up surface is free of deformation when the shielding structure'"'"'s wall portion is positioned between the contact apexes of the first and second arms.

23. An electrical device comprising a printed circuit board, a shielding structure having a wall portion, and the clip of claim 18, wherein the clip is surface mounted to the printed circuit board, and wherein the wall portion of the shielding structure is positioned between the contact apexes of the first and second arms of the clip.