Tensioner unit, oscillating lever, and tensioner

A technology of tensioning device and swing lever, which is applied in the direction of transmission device, machine/engine, belt/chain/gear, etc., can solve the problem that the tensioning device 810 does not operate, so as to suppress malfunction, suppress manufacturing cost, and reduce noise effect

Pending Publication Date: 2020-09-22
TSUBAKIMOTO CHAIN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such collisions occur repeatedly during use, there may be damage to the backflow prevention parts disposed on the bottom 823 of the tensioner main body 820 or the rear portion of the plunger 830 or the tensioner 810 may be damaged due to the jamming of the plunger 830 . There may be problems such as not performing actions

Method used

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  • Tensioner unit, oscillating lever, and tensioner
  • Tensioner unit, oscillating lever, and tensioner
  • Tensioner unit, oscillating lever, and tensioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The tensioner unit 100 according to the first embodiment of the present invention will be described with reference to the drawings.

[0065] The tensioner unit 100 is composed of a tensioner 110 and a swing lever 150 .

[0066] Such as Figure 1 to Figure 3 As shown, the tensioning device 110 includes: a tensioning device main body 120 having a cylindrical plunger receiving hole 121 with one side open; a cylindrical plunger 130 slidably inserted into the plunger receiving hole 121; And the urging mechanism is retractably accommodated in the pressure oil chamber 111 formed between the plunger receiving hole 121 and the rear end side of the plunger 130, and urges the plunger 130 in the protruding direction.

[0067] The urging mechanism is constituted by a coil spring 140 housed in the cylindrical recess 131 of the cylindrical plunger 130 and compressed between the bottom 123 of the plunger receiving hole 121 .

[0068] The tensioner 110 of the present embodiment fills ...

Embodiment 2

[0078] Compared with the tensioner unit 100 according to the above-mentioned first embodiment, the tensioner unit according to the second embodiment of the present invention has a groove, a through hole or a bottomed hole on the front end surface of the protrusion.

[0079] For example, if Figure 4 As shown, the swing rod 250A has an overall semi-cylindrical protrusion 257A extending across the entire width of the swing rod 250A. Two groove-like grooves 261, 261 extending in the moving direction of the chain (the parts having the same structure as those of the tensioner unit 100 according to the first embodiment are denoted by the same reference numerals, and are also shown in the following drawings. same).

[0080] Also, for example Figure 5 As shown, the swing rod 250B has an overall semi-cylindrical protrusion 257B extending across the entire width of the swing rod 250B. One groove-shaped groove 262 extending in the width direction of the swing lever 250B.

[0081] Al...

Embodiment 3

[0084] The tensioner unit 300 according to the third embodiment of the present invention differs from the tensioner unit 100 according to the above-mentioned first embodiment in the position where the protrusion is formed.

[0085] Such as Figure 8 As shown, the protruding portion 357 of the swing lever 350 according to the present embodiment is arranged as follows. side, contact the top end surface of the tensioner main body 120 of the tensioner 110 .

[0086] Even if a sufficient space cannot be secured at the position where the protrusion 157 is formed in the tensioner unit 100 according to the first embodiment, it can be appropriately selected as in the tensioner unit 300 according to the third embodiment. The position of the protruding portion 357 has a high degree of design freedom.

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PUM

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Abstract

The invention provides a tensioner unit, an oscillating lever, and a tensioner, which are simple in structure, suppress damage to the tensioner even in long-term use while suppressing malfunction, andachieve a long service life. Near the abutting surface of the oscillating lever and a plunger (13), a protruding part (157) contacting with the top end face of a tensioner body (120) is arranged, and / or at the top end part of the tensioner body in the plunger protruding direction, a protruding part making contact with the oscillating lever (150) is arranged, the protruding amount of the plunger away from the top end portion of the plunger on the top end face of the tensioner body in the state that the plunger is located at the bottom of a plunger containing hole (121) of the tensioner body isset as h, when the protruding part is in contact with the top end surface of the tensioner body, and / or when the distance between the abutting surface of the oscillating lever and the top end surfaceof the tensioner body when the protruding part is in contact with the oscillating lever, namely the protruding height, is H, and h<H.

Description

technical field [0001] The present invention relates to a tensioner, a swing lever, and a tensioner unit including the tensioner and the swing lever. The tensioner includes a tensioner body having a cylindrical plunger receiving hole opened on one side. ; a cylindrical plunger slidably inserted into the plunger receiving hole; and a biasing mechanism for applying force to the plunger in a protruding direction, and the swing rod has: a guide of a jointless transmission member that moves in sliding contact a surface; a protrusion supported swingably; and an abutment surface provided on a side opposite to the guide surface. Background technique [0002] In the past, in order to properly maintain the tension of the moving chain and other endless transmission members, a tensioner unit composed of a tensioner and a swing rod is usually used. For example, the following technology has been known. In the chain guide structure of the timing system, the chain guide structure of the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/08
CPCF16H7/08F16H7/0838F16H2007/0812F16H2007/0806F16H2007/0814F16H2007/0859F16H2007/0872F16H2007/0893F16H2007/0897F02B67/06F16H2007/0882F16H2007/185F16H2007/0802F16H2007/0895
Inventor 近能雅彦小原启下坂晃一
Owner TSUBAKIMOTO CHAIN CO
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