Liquid-sealed anti-vibration device
An anti-vibration device and liquid-sealed technology, which is applied to shock absorbers, shock absorber-spring combinations, springs, etc., can solve problems such as idling vibration input attenuation, and achieve a reliable airtight state
Active Publication Date: 2016-03-16
YAMASHITA RUBBER CO LTD
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Problems solved by technology
[0004] In addition, it is also known to provide a damping hole and an idle hole, and to open the auxiliary fluid chamber side opening of the idle hole with an on-off valve during idling, and to resonate in the idle hole to attenuate the input of idle vibration.
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[0065] Hereinafter, an example of the configuration of an engine mount of a motor vehicle equipped with a 3-cylinder engine will be described based on the drawings. First, according to Figure 1~7 The first embodiment will be described. figure 1 Is a cross-sectional view along the center line CL of the engine mount (parallel to the Z direction which is the main vibration input direction), figure 2 Is the top view of the partition member, image 3 Is along figure 2 Section view of line 3-3, Figure 4 Is an exploded perspective view of the partition member, Figure 5 Is an anatomical view of the partition member, Image 6 and 7 It is an explanatory diagram of the role.
[0066] In addition, in the following description, the liquid-sealed anti-vibration device and its parts figure 1 The state shown in the figure is a reference. Regarding the partition member, the main liquid chamber side is set as the upper side and the auxiliary liquid chamber side is set as the lower side.
[0067]...
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The present invention realizes a double-resonance type liquid-sealed anti-vibration device. The double-resonance type liquid-sealed anti-vibration device does not have an idle hole and a valve mechanism for opening and closing the idle hole. It only consists of a damping hole and a belt. The movable membrane of the foot produces 2 resonances. A damping hole (14) and an elastic partition (30) are provided on a partition member (11) that partitions the main liquid chamber (12) and the secondary liquid chamber (13). A foot (35) is integrally protruded from the lower surface of the movable membrane (31) provided at the central part of the elastic partition (30), and the foot (35) is pushed vertically to the bottom of the frame member (40) The limit surface (48) of the upper surface of (46). A third liquid chamber (50) is formed between the outer peripheral portion of the foot (35) and the support wall (44). If the lower surface (38) of the foot (35) is pushed to the limit surface (48), the The third liquid chamber (50) is airtight to seal the working fluid and increase the internal pressure. If the foot (35) moves away from the limiting surface (48), the third liquid chamber (50) is opened to the auxiliary liquid chamber (13), and the working fluid flows out from the third liquid chamber (50). The flow of the working fluid generated by this outflow causes resonance to occur, and a second resonance different from the first resonance caused by the orifice occurs.
Description
Technical field [0001] The present invention relates to a liquid-sealed anti-vibration device used in an engine mount for a motor vehicle, etc., and more particularly to a movable film provided as an elastic film for internal pressure absorption to generate resonance and enable dynamic characteristics Improved liquid-sealed anti-vibration device. Background technique [0002] As such a liquid-sealed anti-vibration device, the following liquid-sealed anti-vibration device is known. The liquid-sealed anti-vibration device is provided on a partition member that separates the main liquid chamber and the auxiliary liquid chamber. The orifice connecting the liquid chamber and the auxiliary liquid chamber is provided with a movable membrane for absorbing the hydraulic pressure fluctuation of the main liquid chamber. [0003] In addition, the following liquid-sealed anti-vibration device is also known. The liquid-sealed anti-vibration device is provided with legs protruding outward in the...
Claims
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IPC IPC(8): F16F13/18
CPCF16F13/106F16F13/10
Inventor 平野行信佐鸟和俊
Owner YAMASHITA RUBBER CO LTD