Patent EP0058408A2 successfully refreshed from Google Patents.
EP0058408A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fluid-filled engine mount device
Assignee: Nissan Motor Co Ltd
•
Filing: 1982-02-11
•
Granted: —
•
Expires: 2002-02-11
Abstract
Abstract A fluid-filled engine mount device (20) comprises first and second base plate members (21, 22) which are connected to a power unit side and a vehicle body side, respectively; a block (24) made of elastic material and interposed between the first and second base plate members (21,22), the elastic block being formed with a cavity (23); a partition plate member (26) having an orifice (25), located in the vicinity of and spaced from the first base plate member (21) to define a fluid chamber (28) to be filled with a fluid and an auxiliary chamber (30) which communicates with the fluid chamber through the orifice; and an elastic support member (27) for connecting the partition plate member (26) with the first base plate member (21 includes a secured section (27a) secured to the first base plate member (21), and an annular section (27c) located inside of the inner wall surface of the elastic block cavity (23) and inside of the first base plate member (21) in the radial direction, and located between the secured section (27a) and the partition plate member peripheral section, thereby effectively preventing high frequency vibration from being transmitted to the vehicle body side, achieving an effective damping of total vibrations applied to the engine mount.
Inventors
- 👤 Toshishiko Kakimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/08; F16F13/10; F16F13/105; F16F13/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
263 words
A fluid-filled engine mount device (20) comprising: first and second base plate members (21,22) which are spaced from each other and connected to a power unit side and a vehicle body side, respectively; a block (24) made of elastic material, interposed between said first and second base plate members and being formed with a cavity (23); a partition plate member (26) located in the vicinity of and spaced from said first base plate member (21), said partition plate member (26) defining a fluid chamber (28) on the elastic block cavity side and an auxiliary chamber (30) on the opposite side relative to said fluid chamber, said auxiliary chamber (30) being defined by a diaphragm member (29) connected to said first base plate member, said partition plate member (26) being formed with an orifice through which said fluid chamber (28) is in communication with said auxiliary chamber (30), said fluid chamber and at least a part of said auxiliary chamber being filled with a fluid; and an elastic support member (27) for connecting said partition plate member (26) with said first base plate member (21), said elastic support member (27) including a secured section (27a) through which said elastic support member (27) is secured to said first base plate member (21), and a generally annular section (27c) located inside of the inner wall surface of said elastic block cavity (23) and inside of said first base plate member in the radial direction, and located between said secured section (27a) and the peripheral section of said partition plate member (26). (Figs. 3, 4 & 5)
Claim 2
Dependent Claim
263 words
A fluid-filled engine mount device (20) comprising: first and second base plate members (21,22) which are spaced from each other and connected to a power unit side and a vehicle body side, respectively; a block (24) made of elastic material, interposed between said first and second base plate members and being formed with a cavity (23); a partition plate member (26) located in the vicinity of and spaced from said first base plate member (21), said partition plate member (26) defining a fluid chamber (28) on the elastic block cavity side and an auxiliary chamber (30) on the opposite side relative to said fluid chamber, said auxiliary chamber (30) being defined by a diaphragm member (29) connected to said first base plate member, said partition plate member (26) being formed with an orifice through which said fluid chamber (28) is in communication with said auxiliary chamber (30), said fluid chamber and at least a part of said auxiliary chamber being filled with a fluid; and an elastic support member (27) for connecting said partition plate member (26) with said first base plate member (21), said elastic support member (27) including a secured section (27a) through which said elastic support member (27) is secured to said first base plate member (21), and a generally annular section (27c) located inside of the inner wall surface of said elastic block cavity (23) and inside of said first base plate member in the radial direction, and located between said secured section (27a) and the peripheral section of said partition plate member (26). (Figs. 3, 4 & 5)
Claim 3
Dependent Claim
86 words
A fluid-filled engine mount device as claimed in Claim 1, said partition plate member (26) and said elastic support member annular section (27c) constitute a system whose natural frequency (f) is set at a value expressed by the following equation: where, "k" is the spring constant of said elastic support member annular section (27c) in the direction parallel with the axis of said partition plate member (26); "w" is the weight of said partition plate member; and "g" is gravitational acceleration. (Figs. 3, 4 & 5)
Claim 4
Dependent Claim
74 words
A fluid-filled engine mount device as claimed in Claim 2, wherein said elastic support member (27) includes a support section (27b) to which said partition plate member (26) contacts, said support section (27b) being integral with said annular section, and a rigid core member (31) disposed in said secured section, in which said annular section (27c) is positioned between said rigid core member (31) and said support section (27b). (Figs. 3, 4 & 5)
Claim 5
Dependent Claim
54 words
A fluid-filled engine mount device as claimed in Claim 3, wherein said elastic support member secured section (27a) is interposed between the peripheral section of said diaphragm member (29) and a part of said elastic block (24) which are in direct contact with said first base plate member (21). (Figs. 3, 4 & 5)
Claim 6
Dependent Claim
25 words
A fluid-filled engine mount device as claimed in Claim 4, wherein said partition plate member (26) is made of metal. (Figs. 3, 4 & 5)
Claim 7
Dependent Claim
25 words
A fluid-filled engine mount device as claimed in Claim 5, wherein said elastic support member (27) is made of rubber. (Figs. 3, 4 & 5)
Claim 8
Dependent Claim
83 words
A fluid-filled engine mount device as claimed in Claim 2, wherein said partition plate member (26) includes a main body (26a) connected to said elastic support member (27) and having an opening (26b) located at the central section thereof, a disc plate (26c) disposed within said main body opening (26b) and spaced from said main body, said disc plate having an opening (25) serving as said orifice, and an annular elastic member (26d) connecting said disc plate with said main body. (Fig. 4)
Claim 9
Dependent Claim
165 words
A fluid-filled engine mount device as claimed in Claim 2, wherein said partition plate member (26) includes a main body (26a) connected to said elastic support member (27), a cylindrical member (26e) slidably disposed at the central portion of said main body (26a) and having an axial opening, serving as said orifice, first and second plates (26g,26h) secured to the opposite ends of said cylindrical member (26e) in such a manner that the axis of said cylindrical member (26e) being perpendicular to said first and second plates (26g,26h), means defining openings (26f) in said main body (26a) around said cylindrical member, first and second elastic cylindrical projections (26i,26j) which are respectively secured on the opposite side surfaces of said main body (26a) and located outside of said openings (26f), said first cylindrical projection (26i) projecting toward said first plate to be contactable with said first plate, said second cylindrical projection (26j) projecting toward said second plate to be contactable with said second plate. (Fig. 5)
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.