US 12,698,814 B2Granted

Flat spring

AssigneeChristian Bauer GmbH + Co.

InventorsLars Borchardt, Gunter Buerkle, Rainer Schiessle

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Abstract

A flat shaped spring may include a spring element. The spring element may have, in a longitudinal section along a central longitudinal axis extending along an axial direction, two profile halves disposed on opposite sides of the central longitudinal axis. The two profile halves may each have a first profile portion and a second profile portion. The first profile portion may have a curvature opposed to the second profile portion. Two outer ends of the spring element facing away from the central longitudinal axis, and which lie opposite one another in a longitudinal direction extending perpendicularly to the axial direction, may be connected to one another via at least one connection element such that the spring element and the at least one connection element collectively form a closed profile in the longitudinal section.

Claims19

Dependent claims

A flat shaped spring, comprising:

a spring element having:
a central longitudinal axis extending along an axial direction;
and
in a longitudinal section along the central longitudinal axis, two profile halves disposed on opposite sides of the central longitudinal axis, the two profile halves each having a first profile portion, a second profile portion, and a third profile portion;
wherein the first profile portion and the third profile portion each have a curvature opposed to the second profile portion;
wherein two outer ends of the spring element facing away from the central longitudinal axis, and which lie opposite one another in a longitudinal direction extending perpendicularly to the axial direction, are connected to one another via at least one connection element such that the spring element and the at least one connection element collectively form a closed profile in the longitudinal section;
wherein the at least one connection element extends from a first outer end of the two outer ends of the spring element to a second outer end of the two outer ends of the spring element;
wherein, in the longitudinal section, the at least one connection element extends from the first outer end to the second outer end of the spring element in a straight line;
wherein the two profile halves and the at least one connection element are at least partially arranged in a common plane oriented perpendicular to a transverse direction, the transverse direction extending perpendicular to the axial direction and to the longitudinal direction;
wherein the first profile portion is disposed adjacent to the central longitudinal axis;
wherein the second profile portion extends from the first profile portion to the third profile portion;
wherein the first profile portion and the third profile portion each have, in the longitudinal section, an arc-shape that opens toward the at least one connection element;
and
wherein the second profile portion has, in the longitudinal section, an arc-shape that opens away from the at least one connection element.

11 more elements

A flat shaped spring, comprising:

a spring element having a central longitudinal axis extending in an axial direction;
two connection elements each extending from a first longitudinal end of the spring element to an opposing second longitudinal end of the spring element such that, in a side view, the spring element and the two connection elements define a closed profile;
the spring element including, in the side view, two profile halves connected to one another at the central longitudinal axis;
wherein the two profile halves each include a first profile portion and a second profile portion curved in opposite directions;
wherein the two profile halves each further include a third profile portion, a linear fourth profile portion, and a fifth profile portion;
wherein the first profile portion is disposed adjacent to the central longitudinal axis;
wherein the second profile portion extends between and connects the first profile portion and the third profile portion;
wherein the fourth profile portion extends between and connects the third profile portion and the fifth profile portion;
wherein the first profile portion and the third profile portion each have, in the side view, an arc-shape that opens toward the two connection elements;
wherein the second profile portion has, in the side view, an arc-shape that opens away from the two connection elements;
and
wherein the fifth profile portion has, in the side view, an arc-shape that opens toward the central longitudinal axis.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/100,566Filed 23 Jan 2023
Priority: DE 10 2022 200 760.324 Jan 2022
Published: US 2023/0235804 A127 Jul 2023
Granted: 4 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F16F 1/185
Leaf springs: characterised by shape or design of individual leaves
F16F 1/025
Made of steel or other material having low internal friction ; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring…
F16F 1/182
Leaf springs: with inter-engaging portions between leaves or between leaves and mountings, e.g. ridges, notches, ripples
F16F 2234/06
Shape: plane or flat