ADJUSTABLE CAM DRIVING MECHANISM

Abstract

The present invention discloses an adjustable cam driving mechanism which comprises a support frame, an input gear, an intermediate gear and an output gear. The input gear, the intermediate gear and the output gear are respectively arranged on the support frame. The intermediate gear is adjustably fixed on the support frame. The input gear and/or the output gear are/is adjustably fixed on the support frame. The adjustable cam driving mechanism of the present invention can adapt to engines of different displacement volumes.

Description

TECHNICAL FIELD

The present invention relates to the technical field of engines, and more particularly to an adjustable cam driving mechanism.

BACKGROUND

At present, the cam driving mechanism of an engine is usually matched with an engine of only one displacement volume. And the driving mechanism needs to be re-designed for an engine of a different displacement volume.

SUMMARY

The technical problem to be solved by the present invention is to provide an adjustable cam driving mechanism suitable for various displacement volumes.

To solve said problem, the present invention provides an adjustable cam driving mechanism comprising a support frame, an input gear, an intermediate gear and an output gear, wherein the input gear, the intermediate gear and the output gear are respectively arranged on the support frame, the intermediate gear is adjustably fixed on the support frame, and the input gear and/or the output gear are/is adjustably fixed on the support frame.

Further, the support frame has an intermediate adjustment hole in which the intermediate gear is arranged; the support frame further has an input adjustment hole and/or an output adjustment hole, the input gear is arranged in the input adjustment hole and the output gear is arranged in the output adjustment hole.

Further, the intermediate gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

Further, the input gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

Further, the output gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

Further, a linkage rod is arranged between the intermediate gear and the input gear, and/or another linkage rod is arranged between the intermediate gear and the output gear.

In the adjustable cam driving mechanism of the present invention, the input gear, the output gear and the intermediate gear are movably arranged on the support frame, so that the positions of the three gears on the support frame can be adjusted according to the requirements to change the vertical distance between the input and output gears, thereby adapting to engines of different displacement volumes.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an adjustable cam driving mechanism of the present invention.

FIG. 2 is a schematic diagram showing the internal structure of an adjustable cam driving mechanism of the present invention.

FIG. 3 is a schematic structural diagram of an adjustable cam driving mechanism according to another embodiment of the present invention.

FIG. 4 is a schematic structural diagram of an adjustable cam driving mechanism according to yet another embodiment of the present invention.

FIG. 5 is a schematic structural diagram of an adjustable cam driving mechanism according to yet another embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an adjustable cam driving mechanism according to yet another embodiment of the present invention.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the adjustable cam driving mechanism comprises a support frame 1, an input gear 2, an intermediate gear 4 and an output gear 3, wherein the input gear 2, the intermediate gear 4 and the output gear 3 are respectively arranged on the support frame 1, and both the intermediate gear 4 and the input gear 2 are adjustably fixed on the support frame 1. The input gear 2 is meshed with an output gear 6 of a crank shaft, and the output gear 3 is meshed with a gear 7 of a cam shaft.

Specifically, the support frame 1 has an intermediate adjustment hole 11 and an input adjustment hole 12. The intermediate gear 4 is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the intermediate adjustment hole 11 of the support frame 1 via a fastening nut. The input gear 2 is arranged on another fixing rod via another bearing, and the another fixing rod is fixed to the input adjustment hole 12 of the support frame 1 via another fastening nut. The output gear 3 is arranged on yet another fixing rod via yet another bearing, and the yet another fixing rod is fixed to the support frame 1. The support frame 1 includes two support plates. One sides of the two support plates extend toward each other to be connected integrally. Each support plate has a fixing hole for fixing with the engine. Of course, in other embodiments, the intermediate adjustment hole 11 and the input adjustment hole 12 may be replaced with multiple holes with threads. In the present embodiment, the intermediate adjustment hole 11 is arcuate and is bent downwards.

When the vertical distance between the input gear 2 and the output gear 3 needs to be changed, the fastening nuts are loosened. Then, the intermediate gear 4 and the input gear 2 are moved and then fixed again by fastening the fastening nuts. Thus, the vertical distance between the input gear 2 and the output gear 3 is changed, so that engines of different displacement volumes can share the present invention. Using gears for transmission, vibration of the air distribution mechanism is alleviated, the engine performance is improved, and discharge of CO and HC is effectively reduced. Therefore, the present invention has environmental protection advantages.

Embodiment 2

As shown in FIG. 3, the present embodiment differs from Embodiment 1 in that a linkage rod 5 is arranged between the intermediate gear 4 and the input gear 2, and the linkage rod 5 is fitted over the fixing rod.

When adjustment is made, only the intermediate gear 4 needs to be moved, and the input gear 2 is driven to move. Thus, the adjustment is quick and convenient.

Embodiment 3

As shown in FIG. 4, the present embodiment differs from Embodiment 1 in that the support frame 1 has an intermediate adjustment hole 11 and an output adjustment hole 13, that the output gear 3 is arranged on a fixing rod via a bearing, that the fixing rod is fixed on the intermediate adjustment hole 11 of the support frame 1 via a fastening nut, that the input gear 2 is fixed on another fixing rod via another bearing, and that the another fixing rod is fixed on the support frame 1. It should be understood that a linkage rod 5 may be arranged between the intermediate gear 4 and the output gear 3. In this embodiment, the intermediate adjustment hole 11 is arcuate and is bent upwards.

Embodiment 4

As shown in FIG. 5, the present embodiment differs from Embodiment 1 in that the support frame 1 further has an output adjustment hole 13, that the output gear 3 is arranged on a fixing rod via a bearing, and that the fixing rod is fixed in the intermediate adjustment hole 11 of the support frame 1 via a fastening nut. It should be understood that linkage rods 5 may be arranged between the intermediate gear 4 and the input gear 2 and between the intermediate gear 4 and the output gear 3 (as shown in FIG. 6).

The above content just describes the embodiment of the present invention, and is thus not intended to limit the patent scope of the present invention. The equivalent structures, which are made by using the description and the content of the drawings of the present invention and are directly or indirectly applied to other related technical fields, shall fall within the patent protection scope of the present invention.

Claims

1. An adjustable cam driving mechanism, comprising a support frame, an input gear, an intermediate gear and an output gear, wherein the input gear, the intermediate gear and the output gear are respectively arranged on the support frame, the intermediate gear is adjustably fixed on the support frame, and the input gear and/or the output gear are/is adjustably fixed on the support frame.

2. The adjustable cam driving mechanism according to claim 1, wherein the support frame has an intermediate adjustment hole in which the intermediate gear is arranged; the support frame further has an input adjustment hole and/or an output adjustment hole, the input gear is arranged in the input adjustment hole and the output gear is arranged in the output adjustment hole.

3. The adjustable cam driving mechanism according to claim 1, wherein the intermediate gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

4. The adjustable cam driving mechanism according to claim 1, wherein the input gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

5. The adjustable cam driving mechanism according to claim 1, wherein the output gear is arranged on a fixing rod via a bearing, and the fixing rod is fixed to the support frame via a fastening nut.

6. The adjustable cam driving mechanism according to claim 1, wherein a linkage rod is arranged between the intermediate gear and the input gear, and/or another linkage rod is arranged between the intermediate gear and the output gear.