Bicycle drive shaft mount mechanism

Abstract

This invention relates to a driveshaft seat mechanism for bicycles, comprising a body, a connecting seat, and a connecting assembly. The body includes a bottom bracket seat and a rear chain fork seat connected to each other. The bottom bracket seat is used to connect the bottom bracket, and the rear chain fork seat is used to connect the rear chain fork. The connecting seat is used to connect the seat tube and the down tube. The connecting assembly includes two spacers and a fastener. The two spacers are located on both sides of the body and between the connecting seat. The fastener passes through and connects the connecting seat, the two spacers, and the body. At least one spacer is screwed into the body and can be rotated relative to the body to separate from or abut against the connecting seat. During installation, the spacer is first rotated closer to the body so that the body and the spacer are placed between the two sides of the connecting seat. After installation, the spacer is rotated to abut against the connecting seat. The operation is convenient and the installation is stable.

Claims

1. A driveshaft mount mechanism for a bicycle frame for engaging a drivetrain of the bicycle, the driveshaft mount mechanism comprising: a body including an integrally connected bottom bracket mount and a chainstay mount, the bottom bracket mount for engaging a bottom bracket of the drivetrain, and the chainstay mount for engaging a chainstay of the frame; a connector located at the top of the body and for connecting a seat tube and a lower tube of the frame; and at least one coupling assembly including two spacers and a fastener, the two spacers being located on opposite sides of the body and between the connector, at least one of the spacers being screwed into the body and capable of being twisted relative to the body to separate from or abut against the connector, the fastener being inserted through and engaging the connector, the two spacers, and the body.

2. The drive shaft seat mechanism of the bicycle as described in claim 1, wherein one of the spacers is screwed into the body, and the other spacer is provided with a connected body and a fitting part, the outer diameter of the fitting part being smaller than the outer diameter of the body, the body having a recessed fitting groove corresponding to the fitting part, and the body abutting against the body when the fitting part is inserted into the fitting groove.

3. The drive shaft seat mechanism of the bicycle as claimed in claim 1, wherein the at least one spacer block screwed into the body is provided with an operating part and a threaded part connected thereto, the threaded part being screwed into the body, the operating part being located outside the body and having a hexagonal prism structure.

4. A driveshaft mount mechanism for a bicycle as described in any one of claims 1 to 3, wherein the body includes two lugs, one of which extends from the bottom bracket and the other of which is connected to the rear chainstay, the driveshaft mount mechanism including two coupling components respectively coupled to the two lugs.

5. The drive shaft seat mechanism of a bicycle as described in any one of claims 1 to 3, wherein each of the spacers has a washer on one side and abuts against the connector with the washer.

6. The driveshaft mount mechanism of a bicycle as described in any one of claims 1 to 3, wherein the rear lower fork mount includes a right fork engagement portion, the right fork engagement portion having an engagement plane and a groove, the engagement plane being located on the outer surface of the body, the groove being recessed from the engagement plane toward the body, the engagement plane engaging with a right fork of the rear lower fork at the portion located around the groove.

7. The driveshaft housing mechanism of a bicycle as described in any one of claims 1 to 3, wherein the rear lower fork housing includes a left fork engagement portion, the left fork engagement portion having a half-groove and an engagement hole, the half-groove being used for a left fork of the rear lower fork to abut and be positioned, and the engagement hole penetrating the half-groove for a screw to be screwed and engaged with the left fork.

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