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Rotary adjuster

A regulator, rotary technology, applied in the direction of liquid shock absorber, can solve the problems of difficult to set valve core, increase the installation space of rotary regulator, etc., to achieve the effect of expanding the scope and improving the pass rate

Active Publication Date: 2007-03-28
SOMIC ISHIKAWA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the outer diameter of the casing is large, it is easy to ensure the width of the vane, etc., where the valve element can be placed, but in this case, there is a problem that the installation space of the rotary regulator will inevitably increase.
On the other hand, when the outer diameter of the housing is reduced to reduce the installation space of the rotary regulator, the width of the vanes and the like is reduced in order to ensure the rotation angle of the vanes and the like, and there is a problem that it is difficult to install the spool.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] 1 to 7 are diagrams showing a rotary regulator according to Embodiment 1 of the present invention. As shown in these figures, the rotary regulator of this embodiment has a housing 1, a shaft 2, a vane 3, a partition 4, and a valve mechanism.

[0088] The shell 1 is hollow, with one end open and the other end closed. The opening of the case 1 is closed by a cover 5 . The cover 5 is installed by caulking the end of the housing 1 . The housing 1 has a partition wall 4 that partitions a space formed between the housing 1 and the shaft 2 . The housing 1 and the partition wall 4 are integrally formed by press working. In this way, the recessed portion 1a is formed in the partition wall forming portion, and the recessed portion 1a functions as a joint portion (see FIGS. 3 to 5 ). Viscous fluid such as silicone oil is filled in the casing 1 .

[0089] The shaft 2 is arranged rotatably relative to the housing 1 in the housing 1 . Blades 3 integrally formed with the shaft 2...

Embodiment 2

[0107] The shape of the spool 8 of the rotary regulator of this embodiment is different from that of the rotary regulator of the first embodiment. That is, the spool 8 of this embodiment has a tapered surface 8b on its outer periphery as shown in FIGS. 14 and 15 .

[0108] FIG. 14 shows the state before the valve core 8 moves forward in the working chamber 7 , and FIG. 15 shows the state after the valve core 8 moves forward in the working chamber 7 . As shown in these figures, according to the valve mechanism having the spool 8, as the movement distance of the spool 8 that moves forward in the working chamber 7 increases, the wall surface formed on the peripheral wall 7a of the working chamber 7 and the spool 8 The area of ​​the flow path 14 between the tapered surfaces 8b is reduced, thereby increasing the throttling amount. Therefore, the same effect as that of the first embodiment can be obtained in this embodiment as well.

Embodiment 3

[0110] The shape of the spool 8 of the rotary regulator of this embodiment is different from that of the rotary regulator of the first embodiment. That is, as shown in FIG. 16, the valve body 8 of this embodiment has a substantially V-shaped groove 8c on its outer periphery.

[0111] According to the valve mechanism having the spool 8, as the movement distance of the spool 8 moving forward in the working chamber 7 increases, the flow path formed between the wall surface of the peripheral wall 7a of the working chamber 7 and the groove 8c of the spool 8 The area of ​​14 is reduced, thereby can increase throttling amount. Therefore, the same effect as that of the first embodiment can be obtained in this embodiment as well.

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Abstract

A rotary damper capable of improving both yield and braking characteristics. The rotary damper has a valve mechanism constructed from an operation chamber (7) provided such that fluid can pass through it, a valve body (8) provided so as to advance from a normal position upon receiving a fluid pressure to be movable forward in the operation chamber (7), and a first spring (9) provided so as to be able to apply resistance to the forward movement of the valve body (8). The valve mechanism can restrict the flow rate of the fluid flowing through the operation chamber (7) by a flow path (14) formed between a peripheral wall (7a) of the operation chamber (7) and the valve body (8), and can increase the amount of restriction as the moving distance of the valve body (8) moving forward in the operation chamber (7) increases.

Description

technical field [0001] The present invention relates to a rotary adjuster which can change the braking force corresponding to the load change and a product with the rotary adjuster. Background technique [0002] For example, a rotary regulator is disclosed in Japanese Patent Application Laid-Open No. 2004-3584 (refer to paragraph number 0042-0053 of the publication, Fig. 7-Fig. 11). A spool made of a leaf spring is arranged on the "blade, etc.", and the flow rate of the viscous fluid passing through the fluid passage can be adjusted by the spool according to the load change. [0003] One side of the spool of the rotary regulator is protrudingly bent, and the one side is deformed by fluid pressure to change the size of the flow path through which the fluid passes. According to the above-mentioned rotary regulator, the flow rate of the fluid passing through the fluid passage can be restricted by the spool according to the load, so that the braking force can be changed accordi...

Claims

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Application Information

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IPC IPC(8): F16F9/14
Inventor 菅野秀则志村良太板垣正典
Owner SOMIC ISHIKAWA INC
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