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Rotary damper, auto part having rotary damper and rotational motion assistant mechanism

A damper, rotary technology, used in liquid shock absorbers and other directions, can solve problems such as troublesome operation and inconvenience

Inactive Publication Date: 2007-11-07
SOMIC ISHIKAWA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, in such a rotary motion assisting mechanism, in order to adjust the spring force of the spring member acting on the control object, the user must do some operations to change the fulcrum position of the spring member, which is troublesome and inconvenient.

Method used

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  • Rotary damper, auto part having rotary damper and rotational motion assistant mechanism
  • Rotary damper, auto part having rotary damper and rotational motion assistant mechanism
  • Rotary damper, auto part having rotary damper and rotational motion assistant mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] 1 to 3 are diagrams showing the internal structure of the rotary damper D1 of this embodiment. As shown in these figures, the casing 1 of the rotary damper D1 has a cylindrical portion 1b having one end open and the other end closed by a bottom wall 1a, and a closed portion 1c closing the opening of the cylindrical portion 1b. A groove 1d capable of supporting one end of a spring member that tends to rotate the object to be controlled in a rotational motion in one direction is formed on the outer peripheral surface of the cylindrical portion 1b. Moreover, the partition wall part 4 which protrudes from the inner peripheral surface axial center is provided in the cylindrical part 1b. The front end surface of the partition wall portion 4 is curved so as to be in sliding contact with the outer peripheral surface of the rotor 7 .

[0098] Inside the housing 1, a rotor 7 is provided. Since the rotor 7 is installed inside the housing 1 along the axis of the housing 1 , a spa...

Embodiment 2

[0118] The rotary damper D2 of this embodiment, as shown in Fig. 7, Fig. 9 and Fig. 11, has a large hole 5a that the fluid passage 5 penetrates along the thickness direction of the fin 3 and communicates with each other, and a hole smaller than the large hole portion 5a. The small hole portion 5b constituted by a hole. In addition, as shown in FIG. 10 , the valve 6 is constituted by a leaf spring having supported portions 6e, 6f and a flow regulating portion 6g.

[0119] In this valve 6, as shown in FIG. 10, in order to ensure the passage of the viscous fluid, the width of the central portion of the flow regulating portion 6g located between the supported portions (both ends) 6e and 6f is made wider than the supported portion (both ends). The width of the ends) 6e, 6f is small. In addition, the supported parts (both ends) 6e and 6f of the valve 6 are respectively folded into a substantially "U" shape in a side view so as not to damage the inner surface of the housing 1 by the...

Embodiment 3

[0131] 12 to 15 are diagrams showing the internal structure of the rotary damper D3 of this embodiment. As shown in these figures, the casing 1 of the rotary damper D3 has a cylindrical portion 1e with a substantially circular cross section and first and second closing portions 1f and 1g closing both ends of the cylindrical portion 1e. The first closing portion 1f that closes one end portion of the cylindrical portion 1e has a recessed portion with a substantially arc-shaped cross section in which a hard member 12c described later is disposed on its inner surface. Since the hard member 12c is disposed in the recessed portion, Therefore, a surface having a convex portion against which the rolling member 12b described later is formed (see FIGS. 14 and 17 ). Furthermore, instead of forming a concave portion on the inner surface of the first sealing portion 1f, this portion may be raised to form a convex portion on the inner surface of the first sealing portion 1f. Both the first...

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PUM

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Abstract

It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Description

[0001] This application is that the application number is 02823507.X (international application number is PCT / JP02 / 09888), the application date is September 25, 2002, and the title of the invention is "rotary damper and auto parts with the rotary damper and A divisional application of the patent application for "Rotation Action Assisting Mechanism". technical field [0002] The present invention relates to a rotary damper, more specifically, a rotary damper capable of automatically adjusting the generated braking force in response to changes in load. In addition, the present invention also relates to an automobile part and a rotation motion assisting mechanism including such a rotary damper. Background technique [0003] Conventionally, a well-known rotary damper applies a predetermined braking force to a rotational motion control object to slow down the rotational motion. [0004] A rotary damper is equipped with a vane arranged in a fluid chamber filled with a viscous flu...

Claims

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Application Information

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