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Chain tensioner

A tensioner and chain technology, applied in the direction of bolts, etc., can solve the problems of unfavorable plunger fixation, complicated process, high cost, etc., achieve reliable positioning, reduce function loss, and ensure integrity

Inactive Publication Date: 2020-05-22
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Turning can cause twisting of the shank of the pin, which is detrimental to the retention of the plunger
The above problems can be avoided through some processing methods, but usually the process is complicated and the cost is high

Method used

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Examples

Experimental program
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Embodiment Construction

[0025] Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, but are not intended to exhaust all possible ways of the present invention, nor are they intended to limit the scope of the present invention.

[0026] figure 1 A perspective view of a chain tensioner according to one embodiment of the present invention is shown. The chain tensioner has a main body 1 , a plunger 2 and a pin 3 . The plunger 2 is generally formed in a cylindrical shape, and it can be seen from the figure that its end face has two cut edges 21, and the cut edges 21 extend along the axial direction of the plunger 2 for a certain length to form a gap, and the formed gap is used to connect with the pin 3. The interaction, that is, the pin 3 is stuck in the notch is used to prevent the plunger 2 from falli...

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PUM

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Abstract

The invention relates to a chain tensioner. The chain tensioner is provided with a main body, a plunger and a pin; and the pin is provided with an operation part used for operating the pin, a rod partused for preventing the plunger from being disengaged from the main body, and a positioning part used for positioning the pin relative to the main body and / or the plunger, the main body is provided with an inserting hole, the rod part of the pin is inserted into the inserting hole so as to prevent the plunger from being disengaged from the main body, the main body and / or the plunger are / is provided with a positioning structure, the positioning part is in joint with the positioning structure, and thus the pin is prevented from rotating relative to the main body and / or the plunger.

Description

technical field [0001] The present invention relates to chain tensioners. Background technique [0002] Chain tensioners are used in engine timing drive systems. A pin made of steel is usually inserted into the insertion hole of the chain tensioner to prevent the plunger from coming out of the body, thereby maintaining the integrity of the pre-assembled chain tensioner during transportation. The pin generally has an operating portion (an incomplete ring) for operating the pin and a stem portion (a rod extending from one end of the incomplete ring) for preventing the plunger from coming out of the body. The pins are not rotationally oriented and therefore often rotate during shipping. Turning may cause the shank of the pin to twist, which is detrimental to the fixation of the plunger. The above problems can be avoided by some processing methods, but usually the process is complicated and the cost is high. Contents of the invention [0003] The present invention has been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/02
CPCF16B19/02
Inventor 李鹏飞王庆伟郭清臣
Owner SCHAEFFLER TECH AG & CO KG