Connecting device, connecting device blank, and method for producing connecting device
By arranging radial grooves and a rigidity-reducing structure in the threaded area and combining it with an eccentric element, the installation and reliability problems of the existing connection mechanism are solved, and higher mechanical strength and thread forming efficiency are achieved.
Patent Information
- Application Number
- CN202380094441.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-02-21
- Filing Date
- 2023-12-18
- Publication Date
- 2025-09-26
Smart Images
Figure CN120712419A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a connecting mechanism, a connecting mechanism blank and a method for producing a connecting mechanism. Background Art
[0002] Connecting mechanisms are already known from the prior art. They are used to connect components or sections to one another, typically using threads of the connecting mechanism for this purpose. Connecting mechanisms are also often designed to allow for adjustment. To ensure high precision for this, the connecting mechanism typically has a groove that allows for adjustment in a form-fitting manner, particularly in travel mechanism systems. However, the groove is designed so that, when the thread is formed by means of a reshaping, a poor thread design results on the side opposite the groove. Consequently, this poor thread design often results in the connection mechanism being difficult to install. Summary of the Invention
[0003] It is therefore an object of the present invention to provide a device and a method which allow for better mountability of the connecting mechanism.
[0004] This object is achieved by means of a connecting means according to claim 1, a connecting means blank according to claim 2, and a method for producing a connecting means according to claim 11. Advantageous embodiments, features, advantages, and embodiments are apparent from the dependent claims, the description, and the drawings.
[0005] According to the present invention, a connecting mechanism, in particular a bolt or a screw, is provided. Advantageously, the connecting mechanism comprises a top region and / or a threaded region, wherein the top region has an actuating surface, wherein the threaded region extends along and around the longitudinal direction, wherein the threaded region has a thread with a centerline lying in the longitudinal direction, wherein the threaded region has a groove extending in the radial direction, in particular extending parallel to the longitudinal direction, wherein the radial direction is perpendicular to the longitudinal direction, wherein a stiffness-reducing structure, in particular a recess or a filler notch, is provided in the threaded region opposite the groove or at an angle of + / - 60° to the groove. The connecting mechanism serves to mechanically connect various components and / or sections to one another, in particular within the scope of a force-fit connection. Alternatively, the connecting mechanism can also be a form-fit connection. It is particularly expedient for the connecting mechanism to be suitable and / or intended for adjustment, in particular for chassis adjustment. The connecting mechanism comprises a top region. The top region in particular forms the distal end of the connecting mechanism in the longitudinal direction. To enable torque transmission to the top region, the top region can have an actuating surface. Advantageously, the actuating surface has a normal that points in the radial direction or parallel to the radial direction. The radial direction is, in particular, a direction that is advantageously perpendicular to the longitudinal direction. Conversely, the longitudinal direction is, in particular, the direction that determines the length of the threaded region and / or the connection. The threaded region can also constitute the distal end of the connection in the longitudinal direction. In other words, one distal end of the connection in the longitudinal direction can be formed by the crest region, while the other distal end of the connection can be formed by the threaded region. The centerline of the thread disposed in the threaded region lies in the longitudinal direction, or the centerline can at least partially coincide with the longitudinal direction. A centerline is to be understood as the line that determines the minor radius or flank radius of the thread. In other words, the centerline is the central axis around which the thread is formed. The longitudinal, radial, and circumferential directions can form a cylindrical coordinate system, wherein, in particular, the longitudinal direction forms the height direction, the radial direction forms the radial coordinate, and the circumferential direction forms the angular coordinate. A groove is formed in the threaded region, which is radially introduced into the threaded region. In other words, the groove can be formed in a plane perpendicular to the longitudinal direction or the centerline so that it extends radially into the thread from the outside inward. The longitudinal extension of the groove is, in particular, parallel to the longitudinal direction. In other words, the groove can thus be designed to be linear and / or parallel to the longitudinal direction. The groove serves in particular to achieve a positive locking of the eccentric element. Therefore, when using the connecting means as an adjustment mechanism—by inserting the eccentric element into the groove—adjustment is possible. In other words, the present invention can also relate to an adjustment system comprising a connecting means and a separate eccentric element, wherein the eccentric element in particular has an outer circumferential surface, the center of gravity of the eccentric element being spaced apart from the longitudinal direction or the center line in order to thereby achieve eccentricity.Here, the eccentric element, in particular by means of a projection, at least partially engages the groove and / or surrounds the connecting means, in particular in a threaded region where the groove is also present. In addition to the groove, the threaded region may also include a stiffness-reducing structure, in particular in the form of a recess or a filler notch, opposite the groove or at an angle of + / - 60° to the groove. "Against" should be understood to mean, in particular, that in a cross-sectional plane perpendicular to the longitudinal direction, intersecting the groove and stiffness-reducing structure, a connecting line exists between the stiffness-reducing structure and the groove, the connecting line extending through or intersecting the longitudinal direction. Advantageously, the point of intersection of the connecting line with the longitudinal direction is located between the stiffness-reducing structure and the groove. "Against" should also be understood to mean that the stiffness-reducing structure is offset 180° from the groove in the circumferential direction. "Against" should also be understood to mean that a deviation of up to + / - 60° from the groove is also possible. The angle of deviation is determined, in particular, in a plane perpendicular to and surrounding the longitudinal direction. The stiffness-reducing structure is particularly a structure that, when the threaded region is arranged between two ideal planes and the groove contacts one of these planes, locally increases the contact pressure on the other, opposite plane. However, this also results in an increase in contact pressure at the same contact force, allowing for a higher degree of deformation. Therefore, within the scope of the present invention, structures of this type are also referred to as stiffness-reducing structures. The stiffness-reducing structure can be, in particular, a filling notch or a groove, wherein the stiffness-reducing structure has its largest main dimension in the longitudinal direction or parallel to the longitudinal direction. Alternatively or additionally, the stiffness-reducing structure is preferably linear or longitudinally unchanging. This results in particularly simple production. As already mentioned, the stiffness-reducing structure can, in particular, increase the local surface pressure, thereby enabling thread forming to be achieved in a simple manner. As already described, the stiffness-reducing structure is, in particular, a recess or a filling notch. The filling notch is particularly characterized by being arranged externally and, although essentially located in the threaded region, not having a thread, in particular a thread crest, but at most a thread root. This also allows for an increase in the local surface pressure in the threaded region during thread forming. A recess is particularly present when the rigidity-reducing structure is completely surrounded by the surrounding material except in its direction of extension or perpendicular to its direction of extension. Alternatively, the rigidity-reducing structure can also be a groove.
[0006] Another aspect of the present invention can relate to a connecting mechanism blank. The connecting mechanism blank is used for use in manufacturing to constitute a connecting mechanism as described above and / or below. The elements already described for the connecting mechanism can also be present in the connecting mechanism blank, but wherein a rod area exists in the connecting mechanism blank instead of a threaded area, the rod area is particularly used to provide a thread by means of a thread modification method, or to constitute a thread in the rod area, so as to therefore provide a threaded area. Therefore, the transition from the connecting mechanism blank to the connecting mechanism is especially achieved only by modifying the rod area so that a threaded area is produced. In other words, the rod area of the connecting mechanism blank is therefore constituted without thread, and can have the same features or identical features as the threaded area in addition. In other words, the present invention can also advantageously relate to a connection blank, in particular for producing a bolt or screw, comprising a head region and a shank region, wherein the head region may have an actuating surface, wherein the shank region extends along and / or around a longitudinal direction, wherein the shank region is cylindrical or at least substantially cylindrical, and the cylinder axis of the shank region lies in the longitudinal direction, wherein the shank region has a groove introduced in or in a radial direction, the groove in particular extending parallel to the longitudinal direction, wherein the radial direction is perpendicular to the longitudinal direction, wherein a stiffness-reducing structure, in particular a recess or a filler notch, is provided in the shank region opposite the groove or at an angle of + / - 60° to the groove. The features described with respect to the connection, in particular with respect to the head region, the actuating surface, the longitudinal direction, the radial direction, the groove, and the stiffness-reducing structure, can be provided in the connection blank in the same or equivalent manner. The features described with respect to the threaded region in the connection can also be applied in the connection blank in an equivalent manner to the shank region. Of course, this also applies in the opposite order, so that the features, advantages and designs of the connecting mechanism blank can also be realized in the connecting mechanism in an equivalent manner, as long as this is not excluded because of the thread missing in the connecting mechanism blank. The rod area of the connecting mechanism blank can be cylindrical or at least substantially cylindrical. Basically cylindrical can be understood here as that the basic geometry is almost only rotationally symmetrical around the cylinder axis. If the same width or the same spacing of the rod area are always present in the cross section perpendicular to the cylinder axis that can extend parallel to the longitudinal direction, yet groove and / or rigidity reduction structure are not considered in the said observation, then in particular there is almost only rotationally symmetrical. Therefore, a cylinder or cone should especially be considered as an almost only rotationally symmetrical design.Providing a stiffness-reducing structure in the shank region opposite the groove or at an angle of + / - 60° relative to the groove can also increase the local surface load of the shank region during thread forming. This increases the decisive contact pressure between the thread forming device, in particular the die, and the shank region during thread forming, thereby increasing the degree of plastic deformation and thus enabling a better or more precise thread design opposite the groove or at an angle of + / - 60° relative to the groove. This can, in particular, increase the load-bearing capacity of the thread and / or the suitability of the thread for a go gauge. This can also facilitate thread insertion.
[0007] The connecting means and / or the connecting means blank are in particular formed in one piece. This allows for particularly high mechanical strength. In one piece, it is to be understood that the means / component is not produced by joining together a plurality of components.
[0008] The connecting means and / or the connecting means blank are made in particular of a high-strength or ultra-high-strength material. A high-strength material is in particular a material whose tensile limit or tensile strength is at least 800 N / mm. 2 , preferably at least 1000N / mm 2 In contrast, ultra-high strength materials have a tensile strength or ultimate tensile strength of at least 1200 N / mm 2 , preferably at least 1400N / mm 2 By using high-strength or ultra-high-strength materials, the connection mechanism can be classified in strength classes 8.8, 10.9, 12.9 or even 14.8 or 14.9, 15.8U, 15.9U or higher. In other words, the connection mechanism can thus be located in or have the strength class.
[0009] Preferably, the rigidity-reducing structure is a concave structure. A concave structure is understood to mean that material has been removed or is absent in order to form the structure. In other words, the concavely formed rigidity-reducing structure or structures cannot be characterized by projections, but only by recesses, depressions, and / or filled indentations.
[0010] Advantageously, the stiffness-reducing structure delimits the threaded region and / or the shank region in the radial direction. In other words, the stiffness-reducing structure can be introduced radially from the outside into the threaded region or the shank region. For example, the stiffness-reducing structure can interrupt thread turns in the threaded region and / or disrupt and / or interrupt the continuous progression of the thread turns, in particular the continuous progression of the thread crests and / or thread roots. This allows for a particularly simple and effective design of the stiffness-reducing structure.
[0011] In an alternative or additionally preferred embodiment, the stiffness-reducing structure or structures can be structures extending in the longitudinal direction. This should be understood in particular to mean that the stiffness-reducing structure's main extension direction extends in the longitudinal direction or parallel to the longitudinal direction. This allows for a particularly simple and quick design of the stiffness-reducing structure. Furthermore, this approach ensures that, even when the groove extends in the longitudinal direction or parallel to the longitudinal direction, the stiffness-reducing structure is always arranged exactly opposite the groove.
[0012] Advantageously, the rigidity reducing structure is designed so that a portion of the groove always extends oppositely along the extension of the rigidity reducing structure. In other words, the rigidity reducing structure is designed so that it also intersects the groove in all planes that intersect the rigidity reducing structure and extend perpendicularly to the longitudinal direction.
[0013] In one advantageous embodiment, the stiffness-reducing structure is a recess, in particular a hole, introduced into an end face, wherein the end face delimits the connecting means or the connecting means blank in the longitudinal direction. In other words, the stiffness-reducing structure, or one of the stiffness-reducing structures, can be a recess introduced into a face of the connecting means or the connecting means blank that circumscribes the connecting means in the longitudinal direction. Advantageously, the recess has a round, in particular circular, cross-section in a plane perpendicular to the longitudinal direction. Advantageously, the recess extends in a direction parallel to or coinciding with the longitudinal direction. This allows for particularly simple production and a particularly uniform stiffness reduction achieved by the stiffness-reducing structure.
[0014] Advantageously, the stiffness-reducing structure is surrounded in the longitudinal direction by the threaded region and / or the shank region. In other words, a portion of the threaded region or the shank region extends longitudinally above or below the stiffness-reducing structure. Consequently, distal end regions of the threaded region and the shank region are present in the longitudinal direction, which are free of stiffness-reducing structures. This can also reduce the notch effect coefficient caused by the stiffness-reducing structure. Alternatively or additionally, this can avoid or reduce the unfavorable superposition of two effects that increase the notch effect coefficient: the distal end and the stiffness-reducing structure.
[0015] Advantageously, the stiffness-reducing structure has a rectangular, round, in particular circular, or elliptical cross-section. In the case of a stiffness-reducing structure that is open on one side, the cross-section is to be understood as meaning the base region and / or the wall region of the stiffness-reducing structure that is open on one side, in particular the groove or recess. A particularly simple-to-manufacture geometry can be achieved, particularly by designing the base region in a rectangular or flat manner. Conversely, if the base and / or the cross-section and / or the transition between the wall region and the base region, or even the entire wall region and base region, are round, in particular round or elliptical, a design with a particularly low notch effect can be achieved.
[0016] Advantageously, the stiffness-reducing structure extends as far as the distal end of the threaded region or the shank region in the longitudinal direction. In other words, the stiffness-reducing structure can also be provided directly when viewed from the distal end of the shank region or the threaded region. This allows for a particularly simple subsequent insertion of the eccentric element or the adjusting element into the groove opposite the stiffness-reducing structure. Alternatively or additionally, this can particularly simplify or improve the subsequent insertion of the thread, in particular into the nut thread.
[0017] Preferably, the extension of the rigidity-reducing structure in the longitudinal direction is at most 3.2 times, preferably at most 2 times, and particularly preferably at most 1.7 times the diameter of the threaded region or the shank region. This allows for particularly safe thread production for the conversion tool, while at the same time allowing the nuts, in particular also nuts in combination with lock nuts, to be mounted on a particularly well-formed threaded region by means of the rigidity-reducing structure.
[0018] In an advantageous embodiment of the connection blank or connection, the ratio of the radial extension of the stiffness-reducing structure to the diameter of the shank region or the thread region is 0.01 to 0.1, preferably in the range of 0.012 to 0.06, and particularly preferably in the range of 0.013 to 0.04. The radial extension of the stiffness-reducing structure is, in particular, the radial depth or height of the stiffness-reducing structure. The depth or height can particularly be a maximum or minimum depth or height, advantageously measured from a circle around the centerline or a circle superimposed on the diameter of the shank region. A ratio in the range of 0.01 to 0.1 allows for particularly simple manufacturing. However, a ratio in the range of 0.012 to 0.06 allows for a particularly advantageous design with a low notch effect coefficient. However, a ratio in the range of 0.013 to 0.04 allows for a particularly advantageous design of the thread, with particularly low mechanical loads or overloads due to the notch effect coefficient.
[0019] In an alternative or additionally preferred design of the connecting member blank or connecting member, the ratio of the extension of the stiffness-reducing structure in the longitudinal direction to the diameter of the shank region or the threaded region is 1.0 to 3.2, preferably in the range of 1.5 to 2, and particularly preferably in the range of 1.5 to 1.75. The length of the stiffness-reducing structure is, in particular, the length of the outer contour of the stiffness-reducing structure on the shank region, which directly influences the outer dimensions of the stiffness-reducing structure. The length is, in particular, the main dimension of the contour in the longitudinal direction. A ratio in the range of 1.0 to 3.2 allows for particularly simple manufacturing. Conversely, a ratio in the range of 1.5 to 2 allows for particularly minimal mechanical weakening of the shank region or the subsequent threaded region. However, a ratio in the range of 1.5 to 1.75 allows for a particularly mechanically load-resistant design of the thread. The diameter of the shank region is, in particular, its nominal diameter without taking into account the stiffness-reducing structure and / or the groove.
[0020] In a further preferred, additionally preferred, or advantageous embodiment of the connecting element blank or connecting element, the ratio of the longitudinal extension of the stiffness-reducing structure to the longitudinal length of the shank region or thread region is 0.1 to 0.5, preferably in the range of 0.15 to 0.4, and particularly preferably in the range of 0.2 to 0.3. A ratio in the range of 0.1 to 0.5 allows for particularly simple production. Conversely, a ratio in the range of 0.15 to 0.4 allows for particularly minimal mechanical weakening of the shank region or subsequent thread region. However, a ratio in the range of 0.2 to 0.3 allows for a particularly mechanically load-resistant design of the thread. The diameter of the shank region is, in particular, its nominal diameter without taking into account the stiffness-reducing structure and / or groove.
[0021] Advantageously, the connecting means is an eccentric screw, and / or the connecting means blank is an eccentric screw blank. An eccentric screw or an eccentric screw blank is understood to mean an eccentric screw blank having an eccentric structure with a circular or elliptical outer region, the center of which is offset eccentrically relative to the longitudinal direction, in particular in the radial direction. Advantageously, the eccentric structure can be integrally formed with the connecting means or the connecting means blank. Advantageously, the eccentric structure is arranged between the head region and the threaded region or the shaft region.
[0022] Preferably, the stiffness-reducing structure does not penetrate the connecting means or the connecting means blank. In other words, the stiffness-reducing structure does not extend completely to the opposite side. This prevents or at least reduces mechanical weakening. The stiffness-reducing structure is thus, in particular, a recess or a filling indentation.
[0023] Another aspect of the present invention may relate to a connecting mechanism system comprising a connecting mechanism blank or a connecting mechanism and an eccentric element, wherein the eccentric element may have an eccentric structure and / or wherein the eccentric element engages or can engage with a projection in a groove of the connecting mechanism or the connecting mechanism blank. In other words, the groove and the projection prevent the eccentric element from twisting in the circumferential direction in a form-fitting manner. The connecting mechanism or the connecting mechanism blank may have the features, designs, advantages, or embodiments described above and / or below.
[0024] Another aspect of the present invention may relate to a method for manufacturing a connecting mechanism. Advantageously, the method comprises the following steps:
[0025] providing a connection mechanism blank, in particular as described above and / or below,
[0026] Introducing a thread into the shank region by means of two rolling tools, so that a threaded region is produced,
[0027] The thread introduction is carried out in particular in such a way that during thread formation one rolling tool covers the groove at one time and simultaneously another rolling tool covers the rigidity-reducing structure.
[0028] The method described here makes it possible to convert a connection blank into a connection in a simple and effective manner. Covering the groove should be understood, in particular, to mean that the rolling tool contacts the edge region of the groove on one side of the connection and, on the other side, exerts a force and / or deformation action on a portion and / or edge region of the stiffness-reducing structure opposite thereto. Providing the stiffness-reducing structure in the connection blank, particularly opposite the groove or at an angle of + / - 60° to the groove, allows for locally increased surface pressure during thread forming, thereby positively supporting and / or improving thread formation. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Further advantages and features of the present invention are apparent from the following description with reference to the accompanying drawings. Individual features of the illustrated embodiments can also be used in other embodiments, unless explicitly excluded. The accompanying drawings show:
[0030] Figure 1 A method for manufacturing a connecting mechanism is shown;
[0031] Figure 2 The connector blank is shown in an isometric view;
[0032] Figure 3 A detail view showing the threaded area of the connection mechanism;
[0033] Figure 4Another detail view showing the threaded area of the connection mechanism; and
[0034] Figure 5 An alternative detail view of the threaded region of the connection is shown. DETAILED DESCRIPTION
[0035] exist Figure 1 1 shows a situation during the method for producing the connecting means 1. In the situation shown, the right-hand rolling tool 100 covers the groove 44, wherein a rigidity-reducing structure is introduced opposite the groove 44 and is simultaneously covered by the rolling tool 100 arranged on the left. In other words, Figure 1 1 shows precisely one case in which a connection 1 is created or manufactured by introducing a thread into a connection blank 2 .
[0036] exist Figure 2 , a connecting mechanism blank 2 is shown having a top region 10. The top region 10 has actuating surfaces 12, each of which has a normal parallel to the radial direction R. Furthermore, the connecting mechanism blank 2 also has a shaft region 40, with an eccentric structure 39 being arranged between the shaft region 40 and the top region 10. The shaft region 40 is cylindrical in shape. In the distal end region of the shaft region 40 in the longitudinal direction L, a groove 44 is provided, with a rigidity-reducing structure in the form of a recess 46 or a filling notch 48 being arranged opposite.
[0037] exist Figure 3 Detailed view of the threaded region 30 of the connection 1 is shown in FIG. The connection 1 has a thread 32 in the threaded region 30. In particular, the threaded region 30 can be formed essentially (thus depending on the embodiment) just by the portion in which the thread 32 is present. The thread 32 or the threaded region 30 has a plurality of filling notches 38, which each interrupt the progression of the thread crest of the thread 32. Figure 3 What cannot be seen is that the threaded region 30 also has a groove 34 .
[0038] exist Figure 4 Another design of the threaded area 30 of the connecting mechanism 1 is shown in FIG. Figure 4 As known from the , in the example described, the stiffness-reducing structure, which is designed as a filling notch 38, can have a depth in the radial direction R or a thickness in the radial direction R that is less than the height difference between the thread crest and the thread root. This design can be implemented independently of the actual design of the filling notch 38 described here. Here, the stiffness-reducing structure is surrounded by the threaded region 30 in the longitudinal direction L. The threaded region 30 is edged in the longitudinal direction L by an end face 60.
[0039] exist Figure 5 shows another alternative design of the connection 1. The threaded region 30 also has a thread 32, wherein the stiffness-reducing structure is formed as a recess 36 in the longitudinal direction L or by a recess 36 extending parallel to the longitudinal direction L. In particular, however, the center line of the recess 36 is spaced apart from the longitudinal direction L in the radial direction R. This makes it possible, in particular, to use the recess 36 for positive rotational drive during thread formation.
[0040] Reference Signs List
[0041] 1. Connecting mechanism
[0042] 2. Connecting mechanism blank
[0043] 10 Top area
[0044] 12 Control Surfaces
[0045] 30 thread area
[0046] 32 thread
[0047] 34 slots
[0048] 36 recess
[0049] 38 Filling the gap
[0050] 39 Eccentric structure
[0051] Par 40 area
[0052] 44 slots
[0053] 46 recess
[0054] 48 Filling the gap
[0055] 60 end face
[0056] 100 Rolling Tools
[0057] L Longitudinal direction
[0058] R radial direction
Claims
1. A connecting mechanism (1), in particular a bolt or a screw, The connecting mechanism comprises a top region (10) and a threaded region (30), wherein the top region (10) has a control surface (12), wherein the threaded region (30) extends along and around a longitudinal direction (L), wherein the threaded region (30) has a thread (32) with a centerline of the thread located in the longitudinal direction (L), wherein the threaded region (30) has grooves (34) introduced in the radial direction (R), the grooves extending in particular parallel to the longitudinal direction (L), wherein the radial direction (R) is perpendicular to the longitudinal direction (L), A rigidity-reducing structure, in particular a recess (36) or a filling notch (38), is provided in the threaded region (30) opposite the groove (34) or at an angle of + / - 60° to the groove (34).
2. A connecting mechanism blank (2), in particular for producing a connecting mechanism blank advantageously for producing a bolt or a screw according to claim 1, The connecting mechanism blank comprises a top region (10) and a stem region (40), wherein the top region (10) has a control surface (12), wherein the shaft region (40) extends along and around a longitudinal direction (L), wherein the shaft region (40) is cylindrical or at least substantially cylindrical and the cylindrical axis of the shaft region lies in the longitudinal direction (L), wherein the shaft region (40) has a groove (44) introduced in the radial direction (R), the groove extending in particular parallel to the longitudinal direction (L), wherein the radial direction (R) is perpendicular to the longitudinal direction (L), A rigidity-reducing structure, in particular a recess (46) or a filling notch (48), is provided in the shaft region (40) opposite the groove (44) or at an angle of + / - 60° to the groove (44).
3. The connecting mechanism (1) or the connecting mechanism blank (2) according to claim 1 or 2, The rigidity reducing structure is a concave structure.
4. The connecting mechanism (1) or the connecting mechanism blank (2) according to any one of the preceding claims, The rigidity reducing structure delimits the threaded region (30) or the shank region (40) in the radial direction (R).
5. The connecting mechanism (1) or the connecting mechanism blank (2) according to any one of the preceding claims, The rigidity reducing structure is a structure extending in the longitudinal direction (L).
6. The connecting mechanism (1) or the connecting mechanism blank (2) according to any one of the preceding claims, wherein the rigidity-reducing structure is a recess (36), in particular a hole, introduced into the end face (60), The end surface (60) delimits the connecting mechanism (1) or the connecting mechanism blank (2) in the longitudinal direction (L).
7. A connecting mechanism (1) or a connecting mechanism blank (2) according to any one of the preceding claims, wherein the rigidity reducing structure is surrounded in the longitudinal direction (L) by the threaded area (30) and / or the rod area (40).
8. The connecting mechanism (1) or connecting mechanism blank (2) according to any one of the preceding claims, wherein the rigidity-reducing structure has a rectangular, round, in particular circular or oval cross section.
9. A connection mechanism (1) or a connection mechanism blank (2) according to any one of the preceding claims, wherein the rigidity reducing structure extends in the longitudinal direction (L) to the distal end of the threaded area (30) or the rod area (40).
10. The connecting means (1) or the connecting means blank (2) according to any one of the preceding claims, wherein the connecting means (1) is an eccentric screw, or The connecting mechanism blank (2) is an eccentric screw blank.
11. The connecting mechanism (1) or the connecting mechanism blank (2) according to any one of the preceding claims, The rigidity-reducing structure, in particular in the form of a recess (46) or a filling notch (48), does not penetrate the connecting means (1) or the connecting means blank (2).
12. A method for producing a connecting mechanism (1), in particular a connecting mechanism according to claim 1 or any one of claims 3 to 10, comprising the steps of: providing a connecting mechanism blank (2), in particular a connecting mechanism blank according to claims 2 to 9, Introducing a thread into the shank region (40) by means of two rolling tools (100), so that a threaded region (30) is produced, The thread is introduced in particular in such a way that during thread forming, one rolling tool (100) covers the groove at one time and simultaneously another rolling tool (100) covers the rigidity-reducing structure.