Mounting apparatus for PCB

• US 7,034,223 B2
• Filed: 09/29/2004
• Issued: 04/25/2006
• Est. Priority Date: 03/11/2004
• Status: Expired due to Fees

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Chen, Li-Ping, Fan, Chen-Lu
• Primary Examiner(s): Ngo, Hung V.
• Application Number:
  US10/953,706
• Publication Number:
  US 20050201070A1
• Time in Patent Office: 573 Days
• Field of Search: 174/51, 174/52.1, 174/138.G, 361/753, 361/742, 361/758
• US Class Current: 174/51
• CPC Class Codes: G06F 1/184 Mounting of motherboards

Abstract

A PCB mounting apparatus includes a supporting plate (20) defining a number of through holes, a number of standoffs (50) engaging in the through holes, and a number of grounding members (60) attached to the standoffs. The standoff each includes a head (52) having a holding portion, a flange (54), a post (56), and a base (58). The grounding member each includes a first ring (62) supported on the flange, a second ring (68) supported on the base, and a band (66) connecting therebetween. The PCB (80) defines a number of fixing apertures (82). The combined standoff and grounding member is disposed in the through hole. The PCB is placed upon the supporting plate with the fixing apertures engaging the holding portions of the standoffs and contacts the first rings of the grounding members. The standoffs and the grounding members are made of conductive materials.

Claims

1. A mounting apparatus for securing a Printed Circuit Board (PCB) in a chassis, the PCB defining a plurality of fixing apertures, the chassis comprising a panel, the mounting apparatus comprising:

a supporting plate secured to the chassis and above the panel, the supporting plate defining a plurality of through holes therein; and

a plurality of standoffs received in the through holes of the supporting plate, each of the standoffs comprising a head, a base, and a post disposed therebetween;

wherein the post of each of the standoffs is slidably received in a corresponding through hole of the supporting plate, and the base is supported on the panel of the chassis, the PCB is secured in the chassis with the fixing apertures engaging with the heads of the standoffs and supported on the flange.

2. The mounting apparatus as described in claim 1, further comprises a ground member attached to the standoff, the ground member comprises a first ring, a second ring, and a band disposed therebetween, the first and the second rings separately located on the flange and the base of the standoff.

3. The mounting apparatus as described in claim 2, wherein the first and second rings respectively comprises a resilient strip extending from edges thereof.

4. The mounting apparatus as described in claim 1, wherein a slot is defined in the head, flange, and parts of the post of the stand off.

5. The mounting apparatus as described in claim 4, wherein the head comprises a diameter reduced guiding portion, a diameter increased holding portion, and a vertex portion therebetween, the fixing apertures engage with the holding portion.

6. The mounting apparatus as described in claim 1, wherein the supporting plate comprises a plurality of raised platforms extending therefrom, the through holes are defined in the platforms, each through hole comprises a circle hole, and a slot extending from the circle hole.

7. The mounting apparatus as described in claim 1, the standoff is made of electronic conductive materials.

8. The mounting apparatus as described in claim 1, wherein the supporting plate further comprises a bulge defining a screw hole, the screw hole cooperates with a through aperture defined in the PCB for engaging with a thumb screw.

9. The mounting apparatus as described in claim 1, wherein the mounting bracket further comprises a connecting portion connecting the mounting portions.

10. A mounting apparatus for securing a PCB in an electronic device comprising a panel, the mounting apparatus comprising:

a PCB defining a plurality of fixing apertures;

a supporting plate adapted be installed in the electronic device for supporting the PCB, the supporting plate defining a plurality of through hole, the through hole comprises a circle hole and a slot; and

a plurality of standoff received in the circle hole and engaging in the slot of the supporting plate, the standoff comprising a head with a holding portion, and a flange supporting the PCB thereon;

a plurality of ground member attaching to the standoff and comprising a first ring, a second ring, and a band disposed therebetween;

wherein the first and second rings of the ground member respectively surround the head and the post of the standoff, the combined standoff and the ground member slidably engaging in the through hole, the fixing apertures of the PCB engages with the holding portion of the standoff.

11. The mounting apparatus assembly as described in claim 10, wherein the standoff further comprises a base disposed at outmost end of the standoff, the second ring of the ground member is supported on the base.

12. The mounting apparatus assembly as described in claim 10, wherein the crossing slot is defined in the head, flange and parts of the standoff.

13. The mounting apparatus assembly as described in claim 11, wherein the head comprises a diameter increasing guiding portion, the holding portion joint to the guiding portion and its diameter is reduced.

14. The mounting apparatus assembly as described in claim 10, wherein a plurality resilient strip extends respectively from the first and second rings of the ground member.

15. The mounting apparatus assembly as described in claim 10, wherein the supporting plate further defines a screw hole therein, corresponding to one of the fixing apertures of the PCB for engaging with a thumb screw.

16. The mounting apparatus assembly as described in claim 10, wherein the ground member and the standoff are made of electronic conductive materials.

17. A method for using a mounting apparatus to secure a printed circuit board in a chassis of an electronic device, comprising the steps of:

providing a supporting plate fixedly installed in said chassis;

disposing a plurality of through holes on said supporting plate;

installing a standoff to extend through said each through hole;

engaging one end of said standoff with said printed circuit board at one side of said supporting plate and the other end of said standoff with said chassis at the other side of said supporting plate respectively;

moving said engaged standoff and printed circuit board along an extending direction of said each through hole in said chassis; and

fixing said printed circuit board to said supporting plate.

18. The method as described in claim 17, further comprising a step of installing a ground member beside said standoff to electrically engage with said printed circuit board and said chassis respectively.

19. The method as described in claim 17, wherein said standoff comprises a base with a lager profile than any portion of said each through hole to slidably engage with said chassis in said engaging step.