Flat spring

1 . 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.

2 . The flat shaped spring according to claim 1 , wherein the second profile portion is arranged a greater distance from the central longitudinal axis than the first profile portion.

3 . The flat shaped spring according to claim 1 , wherein the third profile portion is arranged a greater distance from the central longitudinal axis than at least one of the first profile portion and the second profile portion.

4 . The flat shaped spring according to claim 1 , wherein:

the two profile halves each have a fourth profile portion, which is arranged a greater distance from the central longitudinal axis than at least one of the first profile portion, the second profile portion, and the third profile portion; and

the fourth profile portion is formed in a curvature-free manner.

5 . The flat shaped spring according to claim 4 , wherein:

the two profile halves each have a fifth profile portion, which is arranged a greater distance from the central longitudinal axis than at least one of the first profile portion, the second profile portion, the third profile portion, and the fourth profile portion and includes one of the two outer ends; and

the fifth profile portion has a positive curvature.

6 . The flat shaped spring according to claim 1 , wherein the at least one connection element is a monolithic body and is integrally connected to the spring element.

7 . The flat shaped spring according to claim 1 , wherein the flat shaped spring has a standardized force-path characteristic including a first characteristic portion with a degressive course and/or a second characteristic portion with a horizontal course.

8 . A flat shaped spring arrangement, comprising:

a plurality of flat shaped springs according to claim 1 , the plurality of flat shaped springs including a first flat shaped spring and a second flat shaped spring;

wherein the spring element of the first flat shaped spring and the spring element of the second flat shaped spring are connected to one another via the first outer end of the spring element of the first flat shaped spring and the first outer end of the spring element of the second flat shaped spring that face one another in the longitudinal direction; and

wherein the second outer end of the spring element of the first flat shaped spring and the second outer end of the spring element of the second flat shaped spring, which face away from one another in the longitudinal direction, are connected to one another via the at least one connection element of the first flat shaped spring and/or the at least one connection element of the second flat shaped spring.

9 . The flat shaped spring arrangement according to claim 8 , wherein the first outer end of the spring element of the first flat shaped spring and the first outer end of the spring element of the second flat shaped spring are connected to one another via the at least one connection element of the first flat shaped spring and/or the at least one connection element of the second flat shaped spring.

10 . The flat shaped spring arrangement according to claim 8 , wherein a plurality of spring elements form a predetermined geometry.

11 . The flat shaped spring arrangement according to claim 10 , wherein the predetermined geometry includes at least one of a multi-sided shape, a polygon, a quadrilateral, and a rectangle.

12 . The flat shaped spring according to claim 1 , wherein the at least one connection element and the spring element are structured as separate, individual components.

13 . The flat shaped spring according to claim 1 , wherein the at least one connection element is a flat planar body.

14 . The flat shaped spring according to claim 1 , wherein the at least one connection element has a surface that extends from the first outer end of the spring element to the second outer end of the spring element and that is oriented transversely to the axial direction.

15 . The flat shaped spring according to claim 1 , wherein:

the two profile halves each further have a fourth profile portion and a fifth profile portion;

the fourth profile portion is linear and extends from the third profile portion to the fifth profile portion; and

the fifth profile portion has, in the longitudinal section, an arc-shape that opens toward the central longitudinal axis.

16 . 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.

17 . The flat shaped spring according to claim 16 , wherein:

the two connection elements includes:

a first connection element at least a portion of which is offset from the spring element in a first lateral direction; and

a second connection element at least a portion of which is offset from the spring element in a second lateral direction opposite the first lateral direction; and

the first longitudinal end and the second longitudinal end of the spring element are disposed opposite one another in a longitudinal direction extending perpendicular to the axial direction, the first lateral direction, and the second lateral direction such that, when viewed in the axial direction, the spring element is at least partially arranged between the first connection element and the second connection element in the first lateral direction and/or the second lateral direction.

18 . A flat shaped spring, comprising:

a spring element having a central longitudinal axis extending in an axial direction;

a connection element extending from a first longitudinal end of the spring element to an opposite, second longitudinal end of the spring element such that, in a side view, the spring element and the connection element define a closed profile;

the spring element including, in the side view, two profile halves connected to one another at the central longitudinal axis, the two profile halves each including a first profile portion, a second profile portion, a third profile portion, a linear fourth profile portion, and a fifth profile portion disposed one after another in that order;

wherein the first profile portion is disposed adjacent to the central longitudinal axis;

wherein the first profile portion and the third profile portion each have, in the side view, an arc-shape that opens toward the connection element;

wherein the second profile portion has, in the side view, an arc-shape that opens away from the connection element; and

wherein the fifth profile portion has, in the side view, an arc-shape that opens toward the central longitudinal axis.

19 . The flat shaped spring according to claim 18 , wherein the connection element extends rectilinearly from the first longitudinal end of the spring element to the second longitudinal end of the spring element.