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JP-7856665-B2 - Preloading device and drive device equipped with preloading device

JP7856665B2JP 7856665 B2JP7856665 B2JP 7856665B2JP-7856665-B2

Inventors

  • トロール、ダニエラ
  • マルト、ハリー

Assignees

  • フィジック インストゥルメント（ピーアイ）エスエー ウント コー．カーゲー

Dates

Publication Date
20260511
Application Date
20220123
Priority Date
20210205

Claims (15)

  1. A preloading device (10, 100) comprising a first spring device (F1), a second spring device (F2), a first end (11, 111), and a second end (12, 112), wherein the first spring device (F1) connects the first end (11) and the second end (12) along the first spring device reference axis (RA1), and the second spring device (F2) connects the first end (11, 111) and the second end (12, 112) along the second spring device reference axis (RA2). Each spring device (F1, F2) comprises a meandering section (M1, M2) having a meandering centerline (MM) and first and second cross sections (50, 70; 150, 170; 250, 270), where each of the first and second cross sections (50, 70; 150, 170; 250, 270) is defined as a section in which a line point on the meandering centerline (MM) moves toward the corresponding end (11, 111, 12, 112) based on a perpendicular projection onto the corresponding spring device reference axis (RA1, RA2), and each spring device reference... With respect to the line or the spring device reference axes (RA, RA1, RA2), the distance between the first and second cross sections increases in the distance -increasing section where the distance from the corresponding spring device reference axes (RA1, RA2) in the section of the meandering centerline (MM) increases, and the first and second cross sections are connected to each other in bridge sections (60, 160, 260) that are further away from the reference line or the spring device reference axes (RA, RA1, RA2) than the distance-increasing section . The first cross sections (50, 150, 250) extend from the first cross section start points (P1, P11, P21) of the section located on the meandering centerline (MM) to the first cross section end points (P2, P12, P22) of the section located on the meandering centerline (MM), The bridge sections (60, 160, 260) extend from the first cross section end points (P2, P12, P22) to the second end points (12, 112) of the bridge section, which are located on the meandering centerline (MM), to the bridge section end points (P4, P14, P24) located on the meandering centerline (MM). The second cross sections (70, 170, 270) extend from the end points of the bridge section (P4, P14, P24) to the end points of the second cross sections (P6, P16, P26) of the section located on the meandering centerline (MM). Preloading device (10, 100) wherein the thickness of at least one meandering section (M1, M2) continuously increases along the path of the meandering centerline (MM) in the region between the first cross section start point (P1, P11, P21) and the second cross section end point (P6, P16, P26), and then decreases after reaching a maximum thickness, the maximum thickness being located in the intermediate region of the bridge section (60, 160, 260).
  2. Each spring device (F1, F2) is formed from at least one meandering section (M1, M2), the meandering section (M1, M2) includes a meandering centerline (MM) in its path, the meandering section (M1) extends from a meandering section start point (PA, PA1, PA2) to a meandering section end point (PB, PB1, PB2), the meandering section start point (PA, PA1, PA2) and the meandering section end point (PB, PB1, PB2) are located on the spring device reference axis (RA, RA1, RA2), and the meandering section (M1) is, (A1) The first cross section (50, 150, 250), wherein the starting point of the first cross section (P1, P11, P21) is the same as the starting point of the meandering section (PA, PA1, PA2), or the starting point of the first cross section (P1, P11, P21) is positioned at a distance from the starting point of the meandering section (PA, PA1, PA2) by the starting section (80, 180, 280), and the first cross section (50, 150 The path of the meandering centerline in 250) is defined such that when a line point on the meandering centerline (MM) moves from the first cross section start point (P1, P11, P21) to the first cross section end point (P2, P12, P22), the point obtained from the perpendicular projection of the moved line point onto the spring device reference axis RA approaches the first end point (11, 111), in the first cross section (50, 150, 250), (A2) The bridge section (60, 160, 260) and (A3) The second cross section (70, 170, 270), wherein the end point of the second cross section (P6) is the same as the end point of the meandering section (PB, PB1, PB2) from the end point of the bridge section (P4, P14, P24), or is located at a distance from the end point of the meandering section (PB, PB1, PB2) by the end section (90, 190, 290), and the path of the meandering centerline in the second cross section (70, 170, 270) is the same as the line on the meandering centerline. The preloading device (10, 100) according to claim 1, comprising portions (A1), (A2), (A3) consisting of the second cross section (70, 170, 270), which is defined such that when a point moves from the end point of the bridge section (P4, P14, P24) to the end point of the second cross section (P6, P16, P26), the point obtained from the perpendicular projection of the moved line point onto the spring device reference axis (RA, RA1, RA2) approaches the first end (11, 111).
  3. The preloading device (10, 100) according to claim 2, wherein the distance between the end points of the first transverse section (P2, P12, P22) and the end points of the bridge section (P4, P14, P24) extends parallel to the spring device reference axis (RA, RA1, RA2).
  4. The section of the meandering centerline (MM) of the at least one meandering section (M1, M2) between the end points of the first cross section (P2, P12, P22) and the end points of the bridge section (P4, P14, P24) is, (C1) Straight path and (C2) A curved path having a uniform curvature that is concave when viewed from the reference axis of the spring device (RA, RA1, RA2), the preload device (10, 100) according to claim 2 or 3, having one of the following shapes.
  5. The at least one meandering section (M1, M2) is shaped such that the section of the meandering centerline (MM, MM1, MM2) between the first cross section start point (P1) and the second cross section end points (P6, P16, P26) is an arc, and the center point of the arc is, (R1) Perpendicular lines (SP1, SP11, SP21) on the tangent to the meandering centerline (MM, MM1, MM2) at the starting points (P1, P11, P21) of the first cross section (50, 150, 250), (R2) Defined by the intersection of the perpendiculars (SP6, SP16, SP26) with the tangents to the meandering centerlines (MM, MM1, MM2) at the second meandering termination points (P6, P16, P26) in the second cross section (70, 170, 270), The preloading device (10, 100) according to any one of claims 2 to 4, wherein the opening angle (φ) extending between the two perpendiculars (SP1, P11, P21, SP6, P16, P26) is greater than 180 degrees and less than 330 degrees.
  6. The preloading device (10, 100) according to any one of claims 2 to 5, wherein the first spring device (F1) and the second spring device (F2) each comprise at least two meandering sections (M1, M2) having portions (A1), (A2), and (A3), respectively, and the bridge sections (60, 160, 260) of the meandering sections (M1, M2) in the same spring device (F1, F2), which are arranged front and rear along the individual spring device reference axes (RA1, RA2), are periodically and alternately arranged on opposite sides with respect to the individual spring device reference axes (RA1, RA2).
  7. The preloading device (10, 100) according to claim 6, wherein the reference axis of the spring device (RA, RA1, RA2) is the centerline of the spring device (F, F1, F2).
  8. Each spring device (F1, F2) includes two meandering sections (M1, M2), and the first meandering section (M1) includes parts (A1), (A2), and (A3). The further meandering section (M2) is connected to the second cross section (70, 170, 270) of the first meandering section (M1) which has the first cross section (50, 150, 250) according to definition (A1), The further meandering section (M2) includes the bridge section (60, 160, 260) according to definition (A2), which is connected to the first cross section (50, 150, 250) of the further meandering section (M2). The further meandering section (M2) includes a second cross section (70, 170, 270) according to definition (A3), which is connected to the bridge section (60, 160, 260) of the further meandering section (M2). The preloading device (10, 100) according to any one of claims 2 to 7, wherein the bridge portion (60) of the first meandering portion (M1) and the bridge portions (60, 160, 260) of the further meandering portion (M2) are arranged on opposite sides with respect to the spring device reference axis RA.
  9. The preloading device (10, 100) comprises at least two meandering sections (M1, M2) located directly adjacent to each other. A preloading device (10, 100) according to any one of claims 1 to 8, wherein one of the meandering sections (M1, M2) includes an end section (90, 190, 290), adjacent meandering sections (M1, M2) include an start section (80, 180, 280), and the start section (80, 180, 280 ) is directly connected to the end section (90, 190, 290).
  10. The preloading device (10, 100) according to claim 9 , wherein the starting sections (80, 180, 280) directly connected to the ending sections (90, 190, 290) are arranged point-symmetrically with respect to the ending sections (90, 190, 290).
  11. The preloading device (10, 100) according to any one of claims 1 to 10, wherein the first spring device reference axis (RA1) of the first spring device (F1) and the second spring device reference axis ( RA2 ) of the second spring device (F2) are arranged axially symmetric with respect to the axis of symmetry of the spring device.
  12. The preloading device (10, 100) according to claim 11, wherein the first spring device reference axis (RA1) of the first spring device (F1) and the second spring device reference axis (RA2) of the second spring device (F2) extend parallel to each other .
  13. A preloading device (10, 100) comprising a first end (11, 111), a second end (12, 112), and at least one spring device (F, F1, F2) connecting the first end (11, 111) to the second end (12, 112) along a spring device reference axis (RA, RA1, RA2), Each of the spring devices (F1, F2) includes at least one meandering section (M1, M2), each meandering section (M1, M2) having a meandering centerline (MM) and first and second cross sections (50, 70; 150, 170; 250, 270), where each of the first and second cross sections (50, 70; 150, 170; 250, 270) is such that a line point on the meandering centerline (MM) approaches a corresponding end (11, 111, 12, 112) based on a perpendicular projection onto the spring device reference axis (RA, RA1, RA2). Defined as a section that moves, the distances of the first and second cross sections increase in proportion to each other in the region where the distance from the spring device reference axes (RA, RA1, RA2) in the section of the meandering centerline (MM) increases, and the first and second cross sections are connected to each other by bridge sections (60, 160, 260) that are at a greater distance from the reference line or the spring device reference axes (RA, RA1, RA2). The first cross sections (50, 150, 250) extend from the first cross section start points (P1, P11, P21) of the section located on the meandering centerline (MM) to the first cross section end points (P2, P12, P22) of the section located on the meandering centerline (MM), The bridge sections (60, 160, 260) extend from the first cross section end points (P2, P12, P22) to the second end points (12, 112) of the bridge section, which are located on the meandering centerline (MM), to the bridge section end points (P4, P14, P24) located on the meandering centerline (MM). The second cross sections (70, 170, 270) extend from the end points of the bridge section (P4, P14, P24) to the end points of the second cross sections (P6, P16, P26) of the section located on the meandering centerline (MM). The thickness of at least one meandering section (M1, M2) continuously increases along the path of the meandering centerline (MM) in the region between the first cross section start point (P1, P11, P21) and the second cross section end point (P6, P16, P26), and then decreases after reaching a maximum thickness, the maximum thickness being located in the intermediate region of the bridge section (60, 160, 260), The first end (11, 111) or the second end (12, 112), or both the first end (11, 111) and the second end (12, 112), are equipped with a separation device (30, 130) for eliminating the influence of lateral forces directed transversely with respect to the spring device reference axis (RA, RA1, RA2), The separation device (30, 130) is (U) The separation device has a first pivot bearing (131) having a first rotation axis and a second pivot bearing (133) having a second rotation axis, wherein the first rotation axis and the second rotation axis extend perpendicular to each other. (V) A preloading device (10, 100) having one of feature groups (U), (V), or both of feature groups (U), (V), wherein the separating device (30, 130) includes at least one flexible hinge or structural hinge.
  14. The at least one spring device (F, F1, F2) is formed from at least two meandering sections (M1, M2), and each of the meandering sections (M1, M2) is (B1) The first cross section (50, 150, 250) and (B2) Bridge section (60, 160, 260) (B3) It forms a meandering loop shape having a second transverse section (70, 170, 270), The bridge section (60, 160, 260) connects the first transverse section (50, 150, 250) to the second transverse section (70, 170, 270), and the vertical plane (VE) intersects the bridge section (60, 160, 260) at least partially. The first transverse portion (50, 150, 250) has a first outer surface portion (S50) having at least one first surface portion (51) oriented at least partially toward the first end portion (11, 111) and a second surface portion (52) oriented opposite to the first surface portion (41), and the second angle (α) between the contour line resulting from the intersection of the first surface portion (51) and the vertical plane (VE) and the individual spring device reference axes (RA, RA1, RA2) opening to the side end of the first end portion (11, 111) is at least partially less than 90 degrees. The second transverse portion (70, 170, 270) has a second outer surface portion (S70) having at least one first surface portion (71) oriented at least partially toward the second end portion (12, 112) and a second surface portion (72) oriented opposite to the first surface portion (71), and the second angle (γ) between the contour line resulting from the intersection of the first surface portion (71) and the vertical plane (VE) and the individual spring device reference axes (RA, RA1, RA2), opening toward the second end portion (12, 112), is at least partially less than 90 degrees. The first cross sections (50, 150, 250) of the second meandering section (M1, M2) are connected to the second cross sections (70, 170, 270) of the first meandering section (M1, M2). The preloading device (10, 100) according to claim 13, wherein the bridge portions (60, 160, 260) of the meandering portions (M1, M2) arranged front to back along the spring device reference axis (RA, RA1, RA2 ) are periodically and alternately arranged on different sides with respect to the spring device reference axis (RA, RA1, RA2).
  15. A drive unit (1), A preloading device (10, 200, 300) according to any one of claims 1 to 14 , A drive device (1) comprising: an actuator (5) positioned between the first ends (11, 111) and the second ends (12, 112), which expands or contracts along the spring device reference axis (RA, RA1, RA2) when operated.

Description

This invention relates to a preloading device (Vorspann-Vorrichtung) and a drive system equipped with a preloading device. Preloading devices are known from Patent Documents 1, 2, and 3. U.S. Patent No. 10389276U.S. Patent No. 5,543,670International Publication No. 2015/113998 The object of the present invention is to provide a preloading or driving device designed as an alternative to known preloading and driving devices, which is advantageous in terms of accuracy, as well as in terms of manufacturing and assembly, and in particular can achieve high preloading forces. This objective is achieved by the features of the independent claims. Further embodiments are described in the dependent claims referencing those independent claims. According to the present invention, the preloading device comprises a first end, a second end, and at least one spring device connecting the first end and the second end along the spring device reference axis RA. At least one spring device of the preloading device, or some or each of the at least one spring device, is formed from at least one meandering or loop-shaped portion, in which the at least one meandering or loop-shaped portion extends along or parallel to the spring device reference axis. In a series of several meandering or loop-shaped portions, the meandering portions are aligned with the spring device reference axis RA, and the meandering or loop-shaped portions that are closest to or adjacent to each other may be directly connected to each other or connected to each other via intermediate portions. In each embodiment of the present invention having all other features of the preloading or driving device described herein, the meandering or loop-shaped portion comprises, in particular, two cross sections, the distance between them increasing at least partially with respect to the reference line or spring device reference axis RA of the individual spring device, and the two cross sections forming a distance-increasing section, the two cross sections connected to each other by a bridge or connecting section, the bridge or connecting section connected to the distance-increasing section, and therefore positioned at a greater distance from the reference line or spring device reference axis. Thus, the meandering or loop-shaped portion extends, in particular, on the same side with respect to the reference line or spring device reference axis RA. In all embodiments of the present invention, particularly between cross sections of the same meandering section and/or between cross sections of different adjacent meandering sections, a free movement space exists in the direction of the reference line or the spring device reference axis within at least a portion or the entire range of movement of the individual spring devices. As a result, the individual spring devices can contract or expand in the direction of the reference line or the spring device reference axis when a corresponding external force is applied to the individual ends of the individual spring devices extending between them. In each embodiment of the present invention, which includes one or more spring devices between two ends, each having multiple meandering or loop-shaped sections, at least two meandering sections that run parallel to each other along a reference line or spring device reference axis extend in opposite directions from the reference line or spring device reference axis, or are located on opposite sides of the reference line or spring device reference axis. In combination with all other features of the preloading device or drive device described herein, an embodiment of the preloading device according to the present invention having one or more meandering sections, wherein at least one meandering section includes a meandering centerline in its path, and (A1) a first cross section extending from a first cross section start point to a first cross section end point, wherein the first cross section start point is the same as the meandering section start point, or the first cross section start point is positioned at a distance from the meandering section start point by the start section, wherein the path of the meandering section centerline in the first cross section is defined such that when a line point on the meandering section centerline moves from the first cross section start point to the first cross section end point, the point obtained from the perpendicular projection of the moved line point onto the spring device reference axis RA approaches the first end, (A2) A bridge section extending from the end point of the first cross section toward the second end, The structure is formed from parts (A1), (A2), and (A3) consisting of a second cross section extending from the end point of the bridge section to a second cross section end point which is the same as the end point of the meandering section, or is located at a distance from the end point of the meandering section by the end point, wherein the path