Hydraulic-elastomeric mount

Claim 2

A hydraulic-elastomeric mount comprising a pair of mounting means, a hollow elastomeric body operatively connecting said mounting means, an elastomeric diaphragm having a rim portion clamped to one of said mounting means between opposed annular clamping portions thereof so as to close said elastomeric body with one side of said diaphragm and form therewith a closed cavity, a rigid partition extending between said clamping portions and mounted in said diaphragm rim portion so as to be directly engaged and sandwiched thereby and clamped therewith to said one mounting means and divide said cavity into a primary hydraulic chamber enclosed by said elastomeric body and a secondary hydraulic chamber enclosed by said diaphragm, a liquid contained in said chambers, an orifice through said partition interconnecting said chambers so as to permit liquid in said primary chamber to flow at a restricted rate into said secondary chamber upon contraction of said primary chamber and in the opposite direction on expansion thereof to thereby provide a damping effect, said diaphrgm rim portion on said one side having an integral annular axially outwardly projecting bead with an axially outwardly facing face sealing portion extending along the length thereof that engages and complies to the associated annular clamping portion on said one diaphragm side on the clamping of said diaphragm rim portion and partition to said one mounting means to effect tight sealing between the chambers and atmosphere, said diaphragm rim portion on said one diaphragm side having an inwarding facing annular groove radially inward of said bead receiving the periphery of said partition so as to alone effect the clamped mounting of same between said clamping portions and also tight sealing between said chambers, said diaphragm rim portion having integral inwardly projecting annular shoulders forming the sides of said groove of less effective compliance than said bead that are preloaded to a predetermined degree against said partition on the clamping of said diaphragm rim portion and partition to said one mounting means so as to not disturb said sealing while permitting limited substantially free reciprocal travel of said partition relative to said one mounting means below a predetermined vibration amplitude of said one mounting means relative to the other and preventing such travel above such amplitude so that flow through said orifice to effect damping does not occur until said predetermined vibration amplitude is exceeded.

Claim 3

A hydraulic-elastomeric mount comprising a pair of mounting means, one of said mounting means comprising a mounting member having a retainer member secured thereto, a hollow elastomeric body operatively connecting the other mounting means to said retainer member, an elastomeric diaphragm having a rim portion clamped to said one mounting means between opposed annular clamping portions on said mounting member and retainer member so as to close said elastomeric body with one side of said diaphragm and form therewith a closed cavity, a rigid partition extending between said clamping portions and mounted in said diaphragm rim portion so as to be directly engaged and sandwiched thereby and clamped therewith to said one mounting means and divide said cavity into a primary hydraulic chamber enclosed by said elastomeric body and a secondary hydraulic chamber enclosed by said diaphragm, a liquid contained in said chambers, an orifice through said partition interconnecting said chambers so as to permit liquid in said primary chamber to flow at a restricted rate into said secondary chamber upon contraction of said primary chamber and in the opposite direction on expansion thereof to thereby provide a damping effect, said diaphragm rim portion on said one side having an integral annular axially outwardly projecting bead with an axially outwardly facing face sealing portion extending along the length thereof that engages and complies to the annular clamping portions on said retainer member on the clamping of said diaphragm rim portion and partition to said one mounting means to effect tight sealing between the chambers and atmosphere, said diaphragm rim portion on said one side having an inwardly facing annular groove radially inward of said bead receiving the periphery of said partition so as to alone effect the clamped mounting of same between said clamping portions and also tight sealing between said chambers, said diaphragm rim portion having inwardly projecting annular shoulders forming the sides of said groove of less effective compliance than said bead that are preloaded to a predetermined degree against said partition on the clamping of said diaphragm rim portion and partition to said one mounting means so as to not disturb said sealing while permitting limited substantially free reciprocal travel of said partition relative to said one mounting means below a predetermined vibration amplitude of said one mounting means relative to the other and preventing such travel above such amplitude so that flow through said orifice to effect damping does not occur until said predetermined vibration amplitude is exceeded.

Claim 4

A hydraulic-elastomeric mount comprising a pair of mounting means, one of said mounting means comprising a mounting member having a retainer member secured thereto, a hollow elastomeric body operatively connecting the other mounting means to said retainer member, an elastomeric diaphragm having a rim portion clamped to said one mounting means between opposed annular clamping portions on said mounting member and retainer member so as to close said elastomeric body with one side of said diaphragm and form therewith a closed cavity, a rigid partition extending between said clamping portions and mounted in said diaphragm rim portion so as to be directly engaged and sandwiched thereby and clamped therewith to said one mounting means and divide said cavity into a primary hydraulic chamber enclosed by said elastomeric body and a secondary hydraulic chamber enclosed by said diaphragm, a liquid contained in said chambers, an orifice through said partition interconnecting said chambers so as to permit liquid in said primary chamber to flow at a restricted rate into said secondary chamber upon contraction of said primary chamber and in the opposite direction on expansion thereof to thereby provide a damping effect, said diaphragm rim portion on said one side having an integral annular axially outwardly projecting bead with an axially outwardly facing face sealing portion extending along the length thereof that engages and complies to the annular clamping portions on said retainer member on the clamping of said diaphragm rim portion and partition to said one mounting means to effect tight sealing between the chambers and atmosphere, said diaphragm rim portion on said one side having an inwardly facing annular groove radially inward of said bead receiving the periphery of said partition so as to alone effect the clamped mounting of same between said clamping portions and also tight sealing between said chambers, said diaphragm rim portion having inwardly projecting annular shoulders forming the sides of said groove of less effective compliance than said bead that are preloaded to a predetermined degree against said partition on the clamping of said diaphragm rim portion and partition to said one mounting means so as to not disturb said sealing while permitting limited substantially free reciprocal travel of said partition relative to said one mounting means below a predetermined vibration amplitude of said one mounting means relative to the other and preventing such travel above such amplitude so that flow through said orifice to effect damping does not occur until said predetermined vibration amplitude is exceeded.

Claim 5

A hydraulic-elastomeric mount comprising a pair of mounting means, a hollow elastomeric body operatively connecting said mounting means, an elastomeric diaphragm having a rim portion clamped to one of said mounting means between opposed annular clamping portions thereof so as to close said elastomeric body with one side of said diaphragm and form therewith a closed cavity, a rigid partition extending between said clamping portions mounted in said diaphragm rim portion so as to be directly engaged and sandwiched thereby and clamped therewith to said one mounting means and divide said cavity into a primary hydraulic chamber enclosed by said elastomeric body and a secondary hydraulic chamber enclosed by said diaphragm, a liquid contained in said chambers, an orifice member mounted for limited relatively free reciprocal travel in said partition in response to pressure thereon in said chambers, said orifice member having an orifice interconnecting said chambers so as to permit liquid in said primary chamber to flow at a restricted rate into said secondary chamber upon contraction of said primary chamber and in the opposite direction on expansion thereof the thereby provide a damping effect following relative travel of said orifice member, said diaphragm rim portion on said one side having an integral annular axially outwardly projecting bead with an axially outwardly facing face sealing portion extending along the length thereof that engages and complies to the associated clamping portion on said one diaphragm side on the clamping of said diaphragm rim portion and partition to said one mounting means to effect tight sealing between the chambers and atmosphere, said diaphragm rim portion having an inwardly facing annular groove receiving the periphery of said partition so as to alone effect the clamped mounting of same between said clamping portions and also tight sealing between said chambers, said diaphragm rim portion on said one diaphragm side having inwardly projecting annular shoulders radially inward of said bead forming the sides of said groove of less effective compliance than said bead that are preloaded to a predetermined degree against said partition on the clamping of said diaphragm rim portion and partition to said one mounting means so as to not disturb said sealing while permitting limited substantially free reciprocal travel of said partition relative to said one mounting means below a predetermined vibration amplitude of said one mounting means relative to the other and preventing such travel above such amplitude so that flow through said orifice to effect damping does not occur following relative travel of said orifice member until said predetermined vibration amplitude is exceeded.

Claim 6

A hydraulic-elastomeric mount comprising a pair of mounting means, a hollow elastomeric body operatively connecting said mounting means, an elastomeric diaphragm having a rim portion clamped to one of said mounting means between opposed annular clamping portions thereof so as to close said elastomeric body with one side of said diaphragm and form therewith a closed cavity, a rigid partition extending between said clamping portions mounted in said diaphragm rim portion so as to be directly engaged and sandwiched thereby and clamped therewith to said one mounting means and divide said cavity into a primary hydraulic chamber enclosed by said elastomeric body and a secondary hydraulic chamber enclosed by said diaphragm, a liquid contained in said chambers, an orifice member mounted for limited relatively free reciprocal travel in said partition in response to pressure thereon in said chambers, said orifice member having an orifice interconnecting said chambers so as to permit liquid in said primary chamber to flow at a restricted rate into said secondary chamber upon contraction of said primary chamber and in the opposite direction on expansion thereof the thereby provide a damping effect following relative travel of said orifice member, said diaphragm rim portion on said one side having an integral annular axially outwardly projecting bead with an axially outwardly facing face sealing portion extending along the length thereof that engages and complies to the associated clamping portion on said one diaphragm side on the clamping of said diaphragm rim portion and partition to said one mounting means to effect tight sealing between the chambers and atmosphere, said diaphragm rim portion having an inwardly facing annular groove receiving the periphery of said partition so as to alone effect the clamped mounting of same between said clamping portions and also tight sealing between said chambers, said diaphragm rim portion on said one diaphragm side having inwardly projecting annular shoulders radially inward of said bead forming the sides of said groove of less effective compliance than said bead that are preloaded to a predetermined degree against said partition on the clamping of said diaphragm rim portion and partition to said one mounting means so as to not disturb said sealing while permitting limited substantially free reciprocal travel of said partition relative to said one mounting means below a predetermined vibration amplitude of said one mounting means relative to the other and preventing such travel above such amplitude so that flow through said orifice to effect damping does not occur following relative travel of said orifice member until said predetermined vibration amplitude is exceeded.