Fixing assembly and circuit board device

Abstract

A fixing component includes at least one positioning ring and a fixing structure. Each positioning ring includes a ring body, a through hole penetrating the ring body, and a first engaging portion and a second engaging portion extending from the ring body in different directions. The fixing structure is detachably disposed on the corresponding positioning ring and includes a base, a fastener, and an elastic element. The base includes a main body, a third engaging portion, and a fourth engaging portion extending from the bottom surface of the main body, wherein the third engaging portion corresponds to the first engaging portion to position the fixing structure on the corresponding positioning ring in a first direction, and the fourth engaging portion corresponds to the second engaging portion to position the fixing structure on the corresponding positioning ring in a second direction. The fastener is rotatably disposed on the base. The elastic element connects the base and the fastener.

Claims

1. A fixing component, comprising: At least one positioning ring, each positioning ring including a ring body, a through hole through the ring body, a first engaging portion and a second engaging portion extending from the ring body in different directions; and a fixing structure detachably disposed on the corresponding positioning ring, and including: a base including a main body, a third engaging portion and a fourth engaging portion extending from the bottom surface of the main body, wherein the third engaging portion corresponds to the first engaging portion to position the fixing structure on the corresponding positioning ring in a first direction, and the fourth engaging portion corresponds to the second engaging portion to position the fixing structure on the corresponding positioning ring in a second direction; a fastener rotatably disposed on the base; and an elastic member connected to the base and the fastener.

2. The fixing assembly as claimed in claim 1, wherein one of the first engaging portion and the third engaging portion is a slide rail, and the other is a first protrusion that is detachably inserted into the slide rail.

3. The fixing assembly as claimed in claim 2, wherein the base further includes a protruding post protruding from the bottom surface and detachably extending into the through hole, the third engaging portion being the slide rail formed on the protruding post, the entrance of the slide rail being located at a portion of the protruding post away from the bottom surface, the first engaging portion being the first protrusion located below the through hole and its projection onto the plane of the through hole being located within the through hole, wherein when the protruding post extends into the through hole and the first protrusion enters the slide rail from the entrance, the fixing structure is rotated, and the first protrusion is limited by the slide rail in the first direction.

4. The fastening assembly as claimed in claim 1, wherein the second engaging portion is a second protrusion protruding from the outer edge of the ring body, and the fourth engaging portion includes a gentle slope and a steep slope.

5. The fastening assembly as claimed in claim 1, wherein the fastening structure further includes a pivot, the base includes a first pivot portion, the latching member includes a second pivot portion, and the pivot passes through the first pivot portion and the second pivot portion to pivotally engage the latching member with the base.

6. The fixing assembly as claimed in claim 5, wherein the elastic element is a torsion spring, sleeved on the pivot and abutting against the snap fastener and the base.

7. The fastening assembly as claimed in claim 1, wherein the fastener includes a lever portion and a hook, the hook including a bevel and a stop surface.

8. The fixing assembly as claimed in claim 7, wherein the base includes a bearing surface facing the stop surface, the bearing surface being parallel to the bottom surface.

9. A circuit board assembly adapted for inserting an expansion card, comprising: The circuit board body includes a connector and multiple holes, the multiple holes being located on one side of the connector and arranged in a straight line; And a fixing component as claimed in any one of claims 1 to 8, wherein the at least one positioning ring includes a plurality of positioning rings fixed to the plurality of holes, and the fixing structure is detachably disposed on one of the plurality of positioning rings, wherein when the expansion card is inserted into the connector, the fixing structure is disposed on the corresponding positioning ring to support and fix the end of the expansion card.

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