Pushing force device for tensioner
A tensioner and pushing force technology, applied in the direction of transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of inability to reduce the spring constant, high technology and cost, and the difference of the load becomes larger, and achieves the reduction of Difference in load, easy processing, and stable friction
Inactive Publication Date: 2006-08-16
HONDA MOTOR CO LTD
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Problems solved by technology
[0004] In the above-mentioned conventional tensioner pushing force supply device, since the length of the spring for pressing the actuating rod as the pushing body to the tensioner cannot be increased, the spring constant cannot be reduced, and as a result, The load difference between the forward movement and the backward movement of the movable lever becomes large, and a large difference in tension due to the elongation of the cam chain cannot be avoided.
In addition, since balls are used as engaging members, in order to make contact between the balls and the actuator rod or the frame without gaps, it is necessary to accurately process grooves with arc-shaped cross-sections, which requires high technology and cost.
Also, since the opening is small, assembly becomes difficult
Method used
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[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015] figure 1 It is a longitudinal sectional view showing an example of a camshaft drive system using the inline four-cylinder internal combustion engine 1 of the present invention. As shown in the figure, the main body of the internal combustion engine 1 is composed of a cylinder block 2 , a cylinder head 3 arranged above the cylinder block 2 , and a crankcase 4 arranged below the cylinder block 2 . Moreover, the cylinder block 2, the cylinder head 3, and the crankcase 4 are integrated with each other by nuts not shown in the figure that are screwed together with bolts or stud bolts, and a cylinder head cover is integrally connected above the cylinder head 3. 5.
[0016] A crankshaft 6 is rotatably pivotally supported on a joint surface between the cylinder block 2 and the crankcase 4 . In addition, a piston (not shown) is slidably fitted in an unillustrated cylin...
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To improve reliability and productivity of a pushing force imparting device for a tensioner for giving tension to a belt-like endless transmitting body such as a cam chain of an internal combustion engine. This pushing force imparting device 20 gives tension to the belt-like endless transmitting body by pushing the tensioner arranged along the belt-like endless transmitting body toward the endless transmitting body from a back side thereof. This pushing force imparting device is provided with a main body 21 fixed to a space, a pusher 23 provided freely to slide forward and backward in the main body 21 and to be energized so that a front end thereof abut on the tensioner and formed with a plane taper part 23a in a rear part of a side surface thereof, and a projection 31 arranged inside the main body 21 and to be energized by a spring 32 to push the taper part 23a.
Description
technical field [0001] The present invention relates to a pushing force imparting device for a tensioner for imparting tension to a belt-shaped endless transmission body such as a cam chain of an internal combustion engine. Background technique [0002] In the existing pressing force applying device for tensioner, the arc-shaped inclined surface in cross-section provided at the rear part of the actuating rod as the pressing body and the arc-shaped inclined surface in cross-section provided in the frame body as the main body Balls are arranged as engaging members between the slopes, and the actuator lever as a pushing body moves forward in a direction other than the slack of the cam chain by virtue of the wedge effect generated by them, so that the tension of the cam chain is properly maintained. (For example, refer to Patent Document 1). [0003] [Patent Document 1] is Japanese Patent Publication No. 61-28850. [0004] In the above-mentioned conventional tensioner pushing ...
Claims
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IPC IPC(8): F16H7/08
Inventor江水治佐藤治新村龙太
OwnerHONDA MOTOR CO LTD