JPWO2021004739A5

JPWO2021004739A5 -

Info

Publication number: JPWO2021004739A5
Application number: JP2021575913A
Authority: JP
Publication date: 2023-05-26
Anticipated expiration: 2040-06-17

Claims

A gas pressure spring (1) comprising two separate chambers (4,5) containing a fluid,
said chambers (4, 5) are connected to each other through a valve assembly (6), said valve assembly (6)
a) a channel portion (13) for the fluid conducting connection of two chambers (4, 5) containing a fluid, the channel portion (13) having a through opening (16) for said fluid;
b) at least one switching means (8) having an open configuration within the open temperature range and a closed configuration within the closed temperature range,
b1) said switching means (8) are at least partially movable relative to said channel portion (13) along an axis of movement (A) in a temperature-driven manner;
b2) the opening normal of the through opening (16) faces the switching means (8);
b3) at least one switching means (8), wherein said channel portion (13) is circumferentially enclosed by a channel wall (9) around said axis of movement (A);
c) at least one sealing means (10) extending circumferentially around said channel wall (9),
c1) said sealing means (10), in the mounting position, abut against at least one sealing surface (9A) of said channel wall (9), the surface normal of said sealing surface (9A) being aligned with said switching means; (8) turn to the side;
c2) said at least one sealing means (10) sealingly cooperates in said mounting position with said at least one sealing surface (9A) and said at least one switching means (8) in said closed configuration; working to close said through opening (16);
c3) said at least one sealing means (10) is spaced, in said mounting position, from said at least one switching means (8) in said open configuration along said axis of movement (A), so that 1 a subsequent fluid path (11) extends between said at least one switching means (8) and said at least one sealing means (10) through said through opening (16) between said two chambers (4, 5) at least one sealing means (10) fluidly connecting the
In a gas pressure spring (1) comprising
d) at least one recess (14) in said channel wall (9),
d1) the projection of said at least one recess (14) along said axis of movement (A) is sealed with the projection of said sealing surface (9A) along said axis of movement (A),
d2) a secondary fluid path in an operative position of said sealing means (10) in which said sealing means (10) is spaced from said at least one sealing surface (9A) along said axis of movement (A); (15) comprises at least one recess (14) fluidly connecting said two chambers (4, 5) to each other through said at least one recess (14);
A gas pressure spring (1), characterized in that:

said at least one recess (14) extending circumferentially around said axis of movement (A) within said outer surface (9B) of said channel wall (9). with grooves for
Gas pressure spring (1) according to claim 1, characterized in that:

said outer surface (9B) is cylindrical and/or coaxial with said axis of movement (A);
Gas pressure spring (1) according to claim 2 , characterized in that:

The width (B) of said at least one recess (14) in said circumferential direction about said axis of movement (A) is the outer radius (R) of said cylindrical outer surface (9B) of said channel wall (9). less than
Gas pressure spring (1) according to claim 2, characterized in that:

said sealing means (10) being fixed transversely to said axis of movement (A) and positively relative to said channel wall (9);
Gas pressure spring (1) according to claim 1 , characterized in that:

The thickness of the sealing means (10) along the axis of movement (A) in an unloaded state is such that the thickness of the through opening (16) of the switching means (8) in the open configuration along the axis of movement is greater than the distance of
Gas pressure spring (1) according to claim 5 , characterized in that:

said sealing means (10) being movable relative to said channel wall (9) along said axis of movement (A) in said open configuration of said switching means (8);
Gas pressure spring (1) according to claim 1 , characterized in that:

a) the thickness of the sealing means (10) along the axis of movement (A) in the unloaded state is such that the sealing surface ( 9A) less than the distance from
b) said thickness of said sealing means (10) is equal to or greater than the distance from said sealing surface (9A) along said axis of movement of said switching means (8) in said closed configuration,
Gas pressure spring (1) according to claim 1 , characterized in that:

said switching means comprising a bimetal deforming along said axis of movement (A) at a switching temperature between said open temperature range and said closed temperature range;
Gas pressure spring (1) according to claim 1 , characterized in that:

the channel portion (13), the opening normal of the through opening (16) and/or the surface normal of the sealing surface ( 9A ) are parallel to the axis of movement (A);
Gas pressure spring (1) according to claim 1 , characterized in that:

a) said valve assembly (6) is opened within an opening temperature range below the switching temperature so that said at least two chambers (4, 5) are fluidly connected;
b) said valve assembly (6) is closed within a closing temperature range above said switching temperature, so that said at least two chambers (4, 5) are liquid-tightly separated from each other,
Gas pressure spring (1) according to claim 1 , characterized in that: