Fastener

• US 8,807,902 B2
• Filed: 04/16/2009
• Issued: 08/19/2014
• Est. Priority Date: 07/04/2008
• Status: Active Grant

• Current Assignee: Fivetech Technology Incorporated
• Original Assignee: Fivetech Technology Incorporated
• Inventors: Wang, Ting-Jui, Wu, Ming-De
• Primary Examiner(s): DELISLE, ROBERTA S
• Application Number:
  US12/425,003
• Publication Number:
  US 20100003104A1
• Time in Patent Office: 1,951 Days
• Field of Search: 411/103, 411/431, 411/6, 411/81, 411/108, 411172-173, 411/179, 411/183, 411/295, 411/353, 411/436, 16/22, 16/24
• US Class Current: 411/431
• CPC Class Codes: F16B 37/061 by means of welding

Abstract

An improved fastener includes a fastener body and a blocker. The fastener body has an end functioning as a connecting head, and center of the fastener body forms an axial threaded bore. An end of the axial threaded bore corresponding to the connecting head is formed into a recess surrounded by the connecting head. The blocker is removably fitted in the recess of the fastener body. When the connecting head of the fastener body is extended through a fixing hole on a printed circuit board with the blocker fitted in the recess, solder paste applied over the fixing hole is prevented from entering into the axial threaded bore of the fastener body to interfere with a screw being threaded into the fastener body.

Claims

1. An improved fastener, used on a printed circuit board, the printed circuit board having a fixed hole with a layer of solder paste applied over the fixed hole, comprising:

a fastener body having an end functioning as a connecting head, and center of the fastener body forms an axial threaded bore;

an end of the axial threaded bore corresponding to the connecting head being formed into a recess surrounded by the connecting head;

the connecting head extending through the layer of solder paste into the fixed hole of the printed circuit board; and

a blocker being removably fitted in the recess of the fastener body, and removed after the connecting head extends into the fixed hole.

2. The improved fastener as claimed in claim 1, wherein the blocker is a plug.

3. The improved fastener as claimed in claim 1, wherein the blocker is a plate.

4. The improved fastener as claimed in claim 1, wherein the blocker is a column.

5. The improved fastener as claimed in claim 1, wherein the fastener body extends away from the printed circuit board.

6. The improved fastener as claimed in claim 1, wherein the blocker prevents said solder paste from entering said axial threaded bore through said recess.

7. The improved fastener as claimed in claim 1, wherein said blocker is removable by a screw extending through the axial threaded bore.

8. An improved fastener, used on a printed circuit board, the printed circuit board having a fixed hole with a layer of solder paste applied over the fixed hole, comprising:

a fastener body having an end functioning as a connecting head, and center of the fastener body forms an axial threaded bore;

an end of the axial threaded bore corresponding to the connecting head being formed into a recess surrounded by the connecting head;

the connecting head extending through the layer of solder paste into the fixed hole of the printed circuit board, a cross section area of the fastener body other than the connecting head being larger than a cross section area of the connecting head and area of the fixed hole; and

a blocker being fitted in the recess of the fastener body, and removed after the connecting head extends into the fixed hole.