Device for compensating for tolerances between two components to be connected

Abstract

The invention relates to a device (1) for compensating tolerances between two components (2, 3) to be connected, comprising a hollow cylindrical basic element (4), a hollow cylindrical compensating element (5), which is in threaded engagement with the basic element (4) and can be moved from a starting position (AP1) to a compensating position (AP2) by twisting relative to the basic element (4), a connecting element (6) for connecting the two components (2, 3) together, extending at least through a first cavity (H1) of the device (1), wherein the first cavity (H1) has an inner contour (51) in cross section, and the connecting element (6) has an outer contour (61) in cross section, wherein the inner contour (51) differs from the outer contour (61) such that at least one radial projection (7) is present when the inner contour (51) and the outer contour (61) are concentrically aligned.

Description

Technical Field

[0001] The invention relates to a device for compensating for tolerances between two components to be connected. Background Art

[0002] Known devices for compensating tolerances between two components (also referred to simply as compensating devices) consist of a base element or basic body and an axial compensating element, such as a metal threaded sleeve, which are in threaded engagement, for example, with a left-hand thread. A spring element is usually provided in the axial compensating element, which creates a frictional connection between a connecting element extending through the compensating element and having a different thread (a right-hand thread) and the axial compensating element. As a result, when the connecting element is tightened, for example, rotated, a torque is applied to the axial compensating element, causing the compensating element to be axially unscrewed from the base element counter to the insertion direction of the connecting screw, thereby compensating for axial tolerances. Summary of the Invention

[0003] The object of the present invention is to provide a device for compensating for tolerances between two components to be connected that has a particularly simple construction.

[0004] The solution provided by the present invention for achieving the above-mentioned object is a device for compensating for tolerances between two components to be connected.

[0005] See below for favorable improvement plans.

[0006] The device of the present invention for compensating for tolerances between two components to be connected comprises a hollow cylindrical basic element, a hollow cylindrical compensating element, the compensating element being threadedly engaged with the basic element and being movable from a starting position to a compensating position by twisting relative to the basic element, and a connecting element extending through a cavity of the compensating element for connecting the two components together, wherein the cavity has an inner contour in cross section, the connecting element has an outer contour in cross section, and wherein the inner contour differs from the outer contour such that when the inner contour and the outer contour are concentrically aligned with each other, at least one radial protrusion is present.

[0007] The technical solution with at least one radial projection enables, at least partially, a targeted press fit between the connecting element and the compensating element. This allows at least a section of the connecting element (e.g., a connecting screw or bolt) to maintain the distance between the components to be connected. This allows, in contrast to conventional compensating devices, a spring-free design of the device. In other words, there is no need for a separate spring element as a transmission element for unscrewing the compensating element.

[0008] Another device of the present invention for compensating for tolerances between two components to be connected comprises a hollow cylindrical basic element, a hollow cylindrical compensating element, the compensating element being threadedly engaged with the basic element and being movable from a starting position to a compensating position by twisting relative to the basic element, and a connecting element extending through a cavity of the compensating element for connecting the two components together, wherein the cavity has an inner contour in cross section, the connecting element has an outer contour in cross section, and wherein the inner contour or the outer contour has at least one radially extending arched structure in cross section, and wherein when the inner contour and the outer contour are concentrically aligned, at least one radial protrusion and / or an integrated transmission part, in particular an integrated transmission section, is formed in the cross section of the compensating element by the at least one arched structure of the outer contour or the inner contour.

[0009] In the device according to the present invention, the arched structure forms an integrated transmission element by means of a friction-fitting contact, and / or a radial projection by means of a form-fitting contact. The arched structure is formed, for example, by a non-circular inner contour or a non-circular outer contour. The interaction of the inner and outer contours via the arched structure directly creates a press fit between the connecting element and the compensating element, thereby transmitting and applying the torque of the connecting element to the compensating element. This reduces the number of components in the device according to the present invention. The device according to the present invention is constructed in a particularly simple manner from a small number of parts and can be manufactured cost-effectively. Tolerance compensation between the two components to be connected is achieved with high precision and ease.

[0010] The arched structure of the inner or outer contour can be, for example, a partial circle or arc, or a spherical arched structure. The compensating element is preferably integrally formed, in particular without any additional transmission elements or spring elements. The device can, for example, be constructed without a spring. As an alternative to a separate transmission element, the at least one arched structure of the compensating element or the connecting element can form the radial projection and / or the integrated transmission element, in particular the integrated transmission section.

[0011] According to one refinement, the outer contour is circular when the inner contour is not circular. Alternatively, the inner contour can be circular and the outer contour non-circular. For example, the inner contour is oval, elliptical, or trilobal in cross section, particularly triangular or quadrilateral, while the outer contour is circular, particularly perfectly circular, or vice versa. This profile and mating profile of the compensating element and the connecting element allows for a very effective press-fit and / or form-fit, thereby achieving a drive-type engagement, simply and without any additional components. When double or multiple, particularly triple or quadruple, radial projections and / or integrated transmission elements are used between the inner and outer contours, the individual radial projections or individual integrated transmission sections can be designed to be as small as possible, thereby achieving a sufficient press-fit or form-fit, particularly self-locking, between the contours. The inner and outer contours are designed to correspond to each other so that, even when the contours are self-locking, the position of the compensating element relative to the base element can be adjusted as desired, thereby compensating for tolerances between the components and adjusting the position of one component relative to another.

[0012] Furthermore, the inner contour of the compensating element can have a conical shape. This allows for a locally secure press fit between the connecting element and the compensating element. The diameter of the compensating element's conical shape decreases in the direction of insertion of the connecting element. The friction fit between the connecting element and the compensating element in the area of ​​the conical shape increases in the direction of insertion of the connecting element and along its longitudinal extension.

[0013] In one possible embodiment, the inner contour and the outer contour are configured such that they form a friction fit, in particular a driving engagement, when the device is assembled. The compensating element and the connecting element form a friction fit such that, in particular when the device is assembled and the two components are connected, a torque applied by the connecting element can be transmitted to the compensating element. This allows compensation for undesired distances between the two components to be connected.

[0014] The base element and the compensating element can each be made of a plastic material. Alternatively, other materials, such as metal, can also be used. The base element and the compensating element can be made of the same material or different materials.

[0015] Depending on the size of the radial projection, the inner contour and the outer contour can also form a positive fit. The larger the radial projection, the more likely it is that the inner contour and the outer contour will form a positive fit in addition to a friction fit.

[0016] Furthermore, the inner contour, in particular comprising an arched structure, and / or the outer contour, in particular comprising an arched structure, can be provided with a meshing structure. For example, the inner contour and / or the outer contour can be provided with a friction layer, such as a fine-grained or coarse-grained top layer. This enhances the press fit between the connecting element and the compensating element.

[0017] The compensating element and / or the connecting element may also be at least partially deformable. By means of the in particular locally small radial projection and / or the at least one arched structure between the inner contour and the outer contour, a deformation of the compensating element and / or the connecting element, in particular a small expansion and / or compression, can occur in the assembled state of the device.

[0018] Furthermore, the compensating element and the base element coaxially surround the connecting element. The compensating element and the base element have a longitudinal extension, i.e., an extension along the longitudinal axis. In particular, the compensating element and the base element are rotationally symmetrical about their longitudinal axes. In the assembled state of the device, the longitudinal axes of the compensating element, the base element, and the connecting element coincide. Furthermore, the compensating element is arranged in the base element in an axially movable manner to compensate for tolerances. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0020] Figures 1A to 1C is a schematic diagram of an exemplary embodiment of a device for compensating for tolerances between two components, the device being in a starting position with a height gap between the components to be compensated or in a compensation position with a compensated height gap and a compensated synchronization height,

[0021] Figure 2A and 2B Schematic diagram of a first embodiment of the inner contour of the compensation element and the outer contour of the connecting element, respectively,

[0022] Figure 2C and 2D Schematic diagram of a second embodiment of the inner contour of the compensation element and the outer contour of the connecting element, respectively,

[0023] Figure 2E and 2F Schematic diagram of a third embodiment of the inner contour of the compensation element and the outer contour of the connecting element, respectively,

[0024] Figure 3A and 3B is a top view or perspective view of an embodiment of a compensation element,

[0025] Figure 4 is a cross-sectional view of an embodiment of the device without connecting elements,

[0026] Figure 5A and5B The directions of movement of the components of the device during the tolerance-compensated connection of the two components and a schematic diagram of the device after assembly, with the compensation element in the starting position,

[0027] Figure 6A and 6B The directions of movement of the components of the device during the tolerance-compensated connection of the two components and a schematic diagram of the device after assembly, with the compensation element in the compensation position,

[0028] Figure 7A and 7B is a perspective partial sectional view of the device in the assembled state without the connecting element and without the second nut element, wherein the compensating element is in the starting position, and

[0029] Figure 8A and 8B The figure shows a perspective partial section of the device in the assembled state without the connecting element and without the second nut element, with the compensating element in the compensating position.

[0030] The same components are denoted by the same reference numerals throughout the drawings. DETAILED DESCRIPTION

[0031] Figure 1A Schematic diagram of a first embodiment of a device 1 for compensating for tolerances, in particular axial tolerances, in particular height play S, between two components to be connected. Device 1 is configured, for example, to attach a first component 2, such as a bearing housing, an electronic component, a lamp, or a decorative element, to a second component 3, such as a door panel, a load-bearing structure, or a body structure of a vehicle.

[0032] The device 1 includes at least one hollow cylindrical base element 4 and a hollow cylindrical compensating element 5. The hollow cylindrical base element 4 is designed as a retaining element for the first component 2. To this end, the first component 2 has at least one or more recesses (not shown in detail). The base element 4 includes at least one or more flexible retaining flanges 41, which extend through the recesses and come into retaining contact on the bottom side of the first component 2.

[0033] The device 1 further comprises a connecting element 6 passing through at least the first cavity H1 of the device 1 to connect the first member 2 and the second member 3 to each other.

[0034] The first cavity H1 has an inner contour 51 in cross section. The connecting element 6 has an outer contour 61 in cross section.

[0035] The first cavity H1 is formed by the hollow interior of the compensating element 5. An inner contour 51 is formed on the inner wall of the compensating element 5.

[0036] Furthermore, the connecting element 6 passes through a second cavity H2 formed by the hollow interior of the base element 4 .

[0037] In the embodiment, the base element 4 is coaxially arranged in the compensation element 5. Alternatively, the compensation element 5 can also be coaxially arranged in the base element 4, see Figure 4 .

[0038] Inner contour 51 (such as Figures 2A to 2D The inner contour 51 preferably has a plurality of arches 511 evenly distributed around the inner circumference of the compensation element 5.

[0039] In an alternative embodiment of the device 1, as an alternative to the arched structure 511 on the inner contour 51 of the compensation element 5, at least one or more arched structures 611 can be provided on the outer contour 61 of the connecting element 6, see Figure 2E 、 2F .

[0040] When the inner contour 51 of the compensation element 5 and the outer contour 61 of the connecting element 6 are aligned concentrically, in cross section, at least one arched structure 511 ( Figures 2A to 2D ) or at least one arched structure 611 ( Figure 2E and 2F ) forms a radial protrusion 7 and / or an integrated transmission part 50, in particular an integrated transmission section.

[0041] Figure 2A FIG. 5 is a top view from below of a first embodiment of the inner contour 51 and the outer contour 61. The outer contour 61 of the connecting element 6 is circular, in particular perfectly circular. Figure 2A The inner contour 51 of the compensating element 5 has three arches 511 , which are arranged in particular evenly distributed over the inner circumference of the compensating element 5 . Figure 2B for Figure 2A A top-down view of the inner contour 51 and the outer contour 61 is shown.

[0042] Figure 2C FIG. 5 is a top view from the bottom up of a second embodiment of the inner contour 51 and the outer contour 61. The outer contour 61 is circular, in particular perfectly circular. Figure 2C The inner contour 51 has four arches 511 which are arranged in particular evenly distributed over the inner circumference of the compensating element 5 . Figure 2D for Figure 2C A top-down view of the inner contour 51 and the outer contour 61 is shown.

[0043] Figure 2EFIG3 is a top view from the bottom up of a third embodiment of the inner contour 51 and the outer contour 61. The inner contour 51 is circular, in particular perfectly circular. Figure 2E The outer contour 61 has three arches 611 which are arranged in particular evenly distributed over the outer circumference of the connecting element 6 . Figure 2F for Figure 2C A top-down view of the inner contour 51 and the outer contour 61 is shown.

[0044] For all embodiments, the inner contour 51 of the compensating element 5 is cylindrical. In particular, the corresponding inner contour 51 of each embodiment is conical or truncated cone in longitudinal section, with a first radius 512 and a second radius 513. Figure 7A and 8A As shown, the first radius 512 is greater than the second radius 513 .

[0045] The first radius 512 is, for example, circular. The second radius 513 is, for example, triangular circular or trilobal. Figure 2A and 2B As shown, or a square circle, as Figure 2C and 2D The arched structure 511 on the inner circumference of the compensation element 5 or the arched structure 611 of the connecting element 6 extends in the longitudinal extension of the compensation element 5 and the connecting element 6, in particular by Figure 3B The compensation section 523 is shown extending thereon.

[0046] The corresponding arched structure 511 or 611 can be in the shape of an incomplete circle or an arc or can be constructed as a spherical arched structure. When a plurality of arched structures 511 or 611 are provided, they all have the same shape.

[0047] The compensating element 5 is formed in one piece. The compensating element 5 is constructed without a spring. The compensating element 5 does not have a spring element.

[0048] In the embodiment shown, the inner contour 51 differs from the outer contour 61 so that when the inner contour 51 and the outer contour 61 are aligned concentrically with each other, at least one radial projection 7 is formed, see Figures 2A to 2E The various embodiments in .

[0049] This profile design with at least one radial projection 7 and / or an integrated transmission element 50 (particularly an integrated transmission section) allows, at least partially, a targeted press fit to be achieved between the connecting element 6 and the compensating element 5. This allows at least one section of the connecting element 6 to maintain the distance between the components 2 and 3 to be connected. This results in a spring-free design of the device compared to conventional compensating devices. By designing the inner contour 51 (particularly a non-circular inner contour 51) and the perfectly rounded outer contour 61, or vice versa, in the device 1, an integrated transmission element 50 is formed on the compensating element 5. In particular, the interaction of the inner contour 51 and the outer contour 61 creates a press fit and / or a positive fit, thereby transmitting and applying the torque of the connecting element 6 to the compensating element 5. Furthermore, the number of components of the device according to the present invention is reduced.

[0050] Figure 1A The device 1 is shown in a partially assembled state in a starting position AP1 , wherein the compensating element 5 is arranged at a distance corresponding to the height gap S of the second component 3 .

[0051] At least when the device 1 is assembled, the compensating element 5 forms a first threaded engagement G1 with the base element 4, wherein the compensating element 5 can be moved from a starting position AP1 to a compensating position AP2 in a first compensating movement AB1 by twisting relative to the base element 4 in order to compensate for the height gap S. Figure 1A and 1B The sequence shown illustrates this situation.

[0052] Figure 1B The device 1 is shown in a compensation position AP2 , in which the height play S is compensated and the two components 2 and 3 are connected by means of a connecting element 6 , in particular by means of a clamping connection.

[0053] The connecting element 6 is, for example, a connecting screw that passes through at least the first cavity H1 and the second cavity H2 of the device 1 to connect the first component 2 and the second component 3 to each other.

[0054] When the device 1 is assembled, the connecting element 6 forms a second threaded engagement G2 with one of the components 2 , 3 and / or the first nut element 8 , in particular for connecting the two components 2 and 3 together, in particular clamping them together.

[0055] In order to synchronize the first thread engagement G1 with the second thread engagement G2 when assembling the device 1, a second nut element 9 is provided. The second nut element 9 is arranged in the compensating element 5 so that it is at least partially independent of the compensating element 5 and can be moved axially relative thereto, in particular according to a second compensating movement AB2, which will be described in detail below.

[0056] The assembly process is as follows:

[0057] The base element 4 and the compensation element 5 are arranged together in a screwed state on the first component 2, in particular clamped, for example connected to the first component 2 by means of a retaining flange 41. The second nut element 9 is arranged in a rotationally fixed manner in the groove 52, in particular in the receiving section 522 of the compensation element 5.

[0058] The second member 3 is provided with a through hole 31 concentric with the opening of the groove 52 .

[0059] The connecting element 6, in particular a screw with a screw head 63 and a threaded shank 64, is inserted, in particular screwed, into the second nut element 9 through the through-hole 31 in the second component 3. The second nut element 9 is arranged in the compensation element 5 in a rotationally fixed manner.

[0060] The connecting element 6 is then fed further into the compensating element 5 and comes into contact with the non-circular inner contour 51 (particularly the arched structure 511) of the compensating element 5, see Figures 2A to 2D Alternatively, for example, Figure 2E 、 2F As shown, the connecting element 6 can have a non-circular outer contour 61, in particular a curved structure 611, while the inner contour 51 can be circular. Alternatively, as an alternative to the non-circular inner contour 51, a conventional entrainment element (not shown in detail), in particular a spring element, can be arranged in the compensation element 5.

[0061] This results in a first compensating movement AB1, wherein the compensating element 5 is brought into contact with the second component 3 via the connecting element 6 by means of the non-circular inner contour 51 or the spring element, see Figure 1B In other words, the connecting element 6 and the compensating element 5 are brought into driving engagement via the integrated transmission element 50 and / or the radial projection 7 to achieve a first, particularly axial, compensating movement AB1. The compensating element 5 is moved relative to the base element 4 in the opposite direction of insertion of the connecting element 6. This first, axial, compensating movement AB1 serves to compensate for axial tolerances between the two components 2 and 3. The maximum length of the first compensating movement AB1 corresponds approximately to the height gap S.

[0062] The connecting element 6 forms a friction fit with the inner contour 51 of the compensating element 5 via the integrated transmission element 50 and / or the radial projection 7. Due to the friction fit, the connecting element 6 transmits a torque to the compensating element 5, so that the compensating element 5 moves in a direction opposite to the insertion direction of the connecting element 6 and relative to the second nut element 9 and axially relative to the base element 4 toward the second component 3 according to a first compensating movement AB1, until the compensating element 5 abuts against the bottom side 32 of the second component 3, see Figure 1Bor 1C. This position corresponds to the compensation position AP2. When the connecting element 6 is screwed into the device 1, this movement of the compensation element 5 is a first compensation movement AB1, in which the compensation element 5 is moved axially relative to the base element 4 and relative to the components 2 and 3 in the direction of the second component 3. This compensates for axial tolerances between the components 2 and 3.

[0063] The second nut element 9 is arranged in the compensating element 5 so that it can be entrained during this first compensating movement AB1 of the compensating element 5. In other words: during this first compensating movement AB1 of the compensating element 5, the second nut element 9 moves relative to the base element 4 and the components 2 and 3, but does not move axially relative to the compensating element 5. Alternatively, the second nut element 9 can be arranged in the groove 52 of the compensating element 5 so as to be axially movable upward and downward, so that the compensating element 5 does not have to entrain the second nut element 9.

[0064] As the connecting element 6 is further inserted into the device 1 , the threads of the connecting element 6 may not immediately engage with or come into contact with the threads of the first nut element 8 .

[0065] Therefore, in order to synchronize the two thread threads, the second nut element 9 is moved axially relative to the compensating element 5 and independently thereof according to a second compensating movement AB2, based on the threaded engagement between the second nut element 9 and the connecting element 6. The second nut element 9 is moved axially, independently of the compensating element 5, counter to the insertion direction of the connecting element 6 until the thread threads of the connecting element 6 engage with the thread threads of the first nut element 8. The maximum length of the second compensating movement AB2 corresponds approximately to the synchronization height S1.

[0066] To synchronize the thread starts of the second thread engagement G2, a torque is applied to the second nut element 9 based on the third thread engagement G3 between the connecting element 6 and the second nut element 9. This torque overcomes the form fit on the longitudinal web 524, causing the second nut element 9 to be screwed axially into or out of the receiving section 522, counter to the insertion direction of the connecting element 6. The second nut element 9 is screwed axially into or at least partially out of the receiving section 522, particularly in the direction of the flange surface and independently of the compensating element 5 and the base element 4. The second nut element 9 is axially displaced, particularly in the receiving section 522, until the thread of the connecting element 6 engages with or is introduced into the thread of the first nut element 8. This movement serves to synchronize the thread of the second thread engagement G2 and to produce a second compensating movement AB2.

[0067] Depending on the arrangement of the thread threads relative to one another, the synchronization length can in some cases be up to 360° per revolution until the threads engage. This synchronization length, according to the second compensating movement AB2, corresponds to a correspondingly adjustable synchronization height S1 of the second nut element 9. Each revolution can, for example, be approximately one thread pitch. This pitch, in turn, can roughly correspond to the synchronization height S1 and / or the height gap S.

[0068] However, it is possible that the second compensating movement AB2 does not completely compensate for the height gap S, since, for example, only half the thread pitch is required to guide the connecting element 6 into the first nut element 8, in particular to engage with its thread. In this case, the synchronization height S1 is smaller than the height gap S, see Figure 1B .

[0069] If only the compensating element 5 is tensioned on the second component 3 by means of the connecting element 6 , a corresponding force flow KF of the compressive stress between the connecting element 6 and the first nut element 8 passes through the compensating element 5 and the base element 4 .

[0070] Furthermore, the torque during the tightening of the two components 2 and 3 can, under certain circumstances, lead to a modified force flow KF1 of compressive stresses, which differs from a conventional clamping connection, in particular between the connecting element 6 and the second nut element 9, in particular between the screw head 63 and the second nut element 9, resulting in a clamping connection (also called clamping). In the assembled state of the device 1, the connecting element 6 is subjected to a tensile stress ZS.

[0071] The change in force flow KF1 Figure 1C Shown in.

[0072] During the second compensating movement AB2 , the second nut element 9 comes into contact with the second component 3 , so that the tensile force of the connecting element 6 tensions and secures the second nut element 9 and the second component 3 together.

[0073] As an alternative or supplement, for example, if these elements are plastic parts, a certain adjustment behavior can occur between the basic element 4 and the compensation element 5 during assembly, that is, during the screwing process or in the future in the assembled state, so that a changed force flow KF1 always appears in the device 1.

[0074] If, in the assembled state of the device 1 , a modified force flow KF1 occurs between the connecting element 6 and the second nut element 9 , clamping loads or tensile forces between other components, in particular between the compensating element 5 and the base element 4 , are prevented.

[0075] The second nut element 9 is arranged in the groove 52 of the compensation element 5 so that when the connecting element 6 is screwed into the device 1, the second nut element 9 forms a third threaded engagement G3 with the connecting element 6, whereby the second nut element 9 is at least partially independent of the compensation element 5 and moves axially relative to it when the connecting element 6 is screwed into the first component 2 and / or the first nut element 8, see the previous detailed description.

[0076] Therefore, in the assembled state of the device 1, the compensating element 5 and the base element 4 are outside the changing force flow KF1 of the second nut element 9 and the connecting element 6. Since the connecting element 6 and the second nut element 9 are press-fitted via the third thread engagement G3, the second nut element 9 can be axially displaced in the device 1 without the compensating element 5, thereby simply achieving synchronization of the first and second thread engagements G1 and G2.

[0077] According to the invention, the inner contour 51 differs from the outer contour 61 so that, when the inner contour 51 and the outer contour 61 are aligned concentrically with each other, the radial projection 7 and / or the integrated transmission element 50 are formed by means of the arched structure 511 or 611, see Figures 2A to 2E .

[0078] This profile design with at least one radial projection 7 and / or at least one integrated transmission element 50 allows, at least partially, a targeted press fit to be achieved between the connecting element 6 and the compensating element 5. This allows at least one section of the connecting element 6 to maintain the distance between the components 2 and 3 to be connected. This results in a spring-free design of the device compared to conventional compensating devices. This design of the inner contour 51 (particularly a non-circular inner contour 51) creates the radial projection 7 and / or the integrated transmission element 50 on the compensating element 5 in the device 1. In particular, the interaction of the inner contour 51 and the outer contour 61 creates a press fit, thereby transmitting and applying the torque of the connecting element 6 to the compensating element 5. Furthermore, the number of components of the device 1 according to the present invention is reduced.

[0079] Figure 2A and 2B Simplified cross-sectional views of the inner contour 51 of the compensation element 5 and the outer contour 61 of the connecting element 6 , respectively. Figure 2A The inner and outer contours 51 and 61 shown in FIG2B lie in a plane formed by two axes B and C, which are perpendicular to each other and to the longitudinal axis A of the device 1. The longitudinal axis A passes through the intersection of these two axes B and C.

[0080] The corresponding inner contour 51 is substantially non-circular. The corresponding outer contour 61 is substantially circular. In the present embodiment, the inner contour 51 is trilobal and has three rounded corners, also known as a triangular circle. Alternatively, the inner contour 51 can be oval or elliptical, in which case only two radial protrusions 7 are formed instead of three radial protrusions 7 and / or the transmission element 50 is integrated. Figure 2B As shown, the inner contour 51 can also be designed in such a way that four radial projections 7 and / or integrated transmission elements 50 are formed. Such an inner contour 51 is also referred to as a quadrangular circle.

[0081] Alternatively, the outer contour 61 may be non-circular and the inner contour 51 may be substantially circular, see Figure 2E and 2F .

[0082] To connect the two components 2 and 3 together, a first nut element 8 is provided on the underside of the first component 2. The first nut element 8 can be a separate component. Alternatively, the first nut element 8 can also be welded to the first component 2. The first component 2 and the second component 3 each include corresponding through-holes 21 and 31 for the connecting element 6. In another alternative embodiment, the first component 2 itself can have an internal thread as a nut, wherein the internal thread is formed in the associated through-hole 21.

[0083] To assemble the device 1, the first component 2 and the second component 3 are screwed together. For example, the device 1 is placed on the first component 2, for example, by means of the base element 4, and held there, for example, by means of the retaining flange 41. The second component 3 is placed on the side of the compensation element 5 facing away from the base element 4. The connecting element 6 is then passed through the through-hole 31 in the second component 3, the first cavity H1 and the second cavity H2, and the through-hole 21 in the first component 2, and screwed into the first component 2 and / or the first nut element 8.

[0084] The compensating element 5 and the connecting element 6 form a friction fit at least partially, in particular in the area of ​​the inner contour 51 and the outer contour 61. The compensating element 5 forms a friction fit with the connecting element 6 so that when the two components 2 and 3 are connected to each other, the torque applied by the connecting element 6 can be transmitted to the compensating element 5. The undesirable height gap S between the two components 2 and 3 to be connected is compensated and closed by screwing the components 2 and 3 together. During the screwing process, the compensating element 5 moves axially from the starting position AP1 to the compensation position AP2 as indicated by the arrow PF1. Figure 1A As shown, in the starting position AP1, the compensation element 5 is arranged at a distance from the bottom side 32 of the second component 3 according to the height gap S. In the compensation position AP2 (shown in dashed lines), the compensation element 5 rests on the bottom side 32 of the second component 3, see Figure 1B or 1C.

[0085] The base element 4 and the compensation element 5 can each be made of a plastic material. Alternatively, other materials, such as metal, can also be used. The base element 4 and the compensation element 5 can be made of the same material or different materials.

[0086] Depending on the size and / or number of radial projections 7, the inner contour 51 and the outer contour 61 can also form a positive fit. The larger the radial projections 7, the more likely it is that the inner contour 51 and the outer contour 61 will form a positive fit in addition to a friction fit.

[0087] Optionally, the inner contour 51 and / or the outer contour 61 can be provided with a meshing structure (not shown in detail). For example, the inner contour 51 and / or the outer contour 61 can be provided with a friction layer, such as a fine-grained or coarse-grained top layer. This enhances the press fit between the connecting element 6 and the compensating element 5 in the region of the meshing contours.

[0088] Furthermore, the device 1 comprises a second nut element 9. The second nut element 9 is used to synchronize the movement of the compensation element 5 relative to the base element 4 and the movement of the connecting element 6 relative to the compensation element 5 and the first nut element 8, see previously in conjunction with Figure 1B and 1C For this purpose, the second nut element 9 is arranged in the groove 52 of the compensation element 5 .

[0089] Figure 3A and 3B 1 is a top view or perspective view of an embodiment of the axial compensating element 5 .

[0090] The axial compensating element 5 has a flange 53 . The flange 53 is designed as a projection or radial protrusion on a hollow cylindrical shaft 54 ​​.

[0091] The groove 52 is stepped. In the exemplary embodiment, the groove 52 comprises a first compensating section 521 for the second nut element 9 , a receiving section 522 for the second nut element 9 and a second compensating section 523 for the compensating element 5 .

[0092] like Figure 3A As shown, the second compensation section 523 has a non-circular inner contour 51, in particular a trilobal cross section, which can engage with the connecting element 6 during screwing. Figure 2B As shown, the inner contour 51 may also have other suitable cross-sectional shapes, in particular, a biangular circle, a quadrangular circle or a polygonal circle.

[0093] like Figure 3B As shown, the inner contour 51 also has a conical shape in longitudinal section. This conical shape helps to implement a friction fit between the connecting element 6 and the compensating element 5 during the tolerance compensation movement between the two components 2 and 3.

[0094] Furthermore, the inner contour 51 can be provided with a toothing structure (not shown in detail), in particular a friction layer.

[0095] In its starting position AP1, the second nut element 9 is arranged in a form-fitting manner in the receiving section 522. To this end, the receiving section 522 has a plurality of, in particular symmetrically distributed, longitudinal webs 524. When the device 1 is assembled, the second nut element 9 is inserted, in particular pressed, into the receiving section 522, with the longitudinal webs 524 forming a form-fit between the second nut element 9 and the compensating element 5.

[0096] The second nut element 9 is, for example, a hexagonal nut. For this purpose, the receiving section 522 has a corresponding hexagonal contour 525 on the inside and at least partially.

[0097] A groove-shaped recess 531 is introduced in the region of the flange 53. This forms a flexible fixing arm 532 which is Figure 7B It is elaborated in detail.

[0098] like Figure 3B As shown, the longitudinal web 524 extends at least partially in the region of the receiving section 522 along the longitudinal axis A. The longitudinal web 524 has a decreasing height in the direction of the first compensation section 521. Furthermore, the longitudinal web 524 has a shape and / or size such that the second nut element 9 is arranged in the receiving section 522 at least in a form-fitting manner, in particular in the direction of rotation of the connecting element 6. Furthermore, the second nut element 9 is arranged in the receiving section 522 in a friction-fitting manner, in particular in the axial direction along the longitudinal axis A.

[0099] The height of the second nut element 9 corresponds approximately to the height of the accommodation section 522 .

[0100] When the connecting element 6 is inserted into the second nut element 9, they are threadedly engaged with each other. For this purpose, the second nut element 9 has a corresponding internal thread. The connecting element 6 is constructed as a connecting screw or bolt with a corresponding external thread.

[0101] Furthermore, the inner contour 51 of the compensating element 5 can be designed to be bendable, flexible, or elastic. To this end, the compensating element 5 has an annular groove 56 on its end face opposite the flange 53. The annular groove 56 serves, in particular, to prevent material accumulation during the injection molding process of the compensating element 5 made of plastic. Furthermore, such a compensating element 5 made of plastic and having the annular groove 56 can achieve a resilient, constant-thickness shape.

[0102] In addition Figure 3A and 3B In the embodiment shown, the compensating element 5 further comprises a compensating thread 55. The compensating thread 55 is Figures 1A-1C , 5B, 6B are internal threads and are shown in the corresponding embodiments. Figure 3B 、 4 , 7A, and 8A are external threads in the corresponding embodiments.

[0103] For the threaded engagement between the compensation element 5 and the base element 4, the base element 4 has a corresponding base element thread 42, which is Figure 4 、 7A and 8A. Figure 4 、 7A In the corresponding embodiment shown in FIG8A, the basic element thread 42 is an internal thread. Figures 1A to 1C In the corresponding embodiments shown in FIG5B and FIG6B, the basic element thread 42 is an external thread.

[0104] The basic element thread 42 can be constructed as a thread line with a single thread crest. Alternatively, the basic element thread 42 can have multiple thread lines with corresponding thread crests, particularly two thread crests. Providing only one thread line advantageously allows for easy tool opening and closing, thus achieving cost-effective production. However, providing two or more thread lines requires a rotatable core for demolding.

[0105] Figure 4 A cross-sectional view of the device 1 without the connecting element 6

[0106] In the starting position AP1, the second nut element 9 is arranged in a form-fitting manner in the receiving section 522. The first compensation section 521 represents a synchronization height S1, which the second nut element 9 axially compensates for independently of the compensation element 5 according to the second compensation movement AB2 when the connecting element 6 is screwed into the first nut element 8, in order to synchronize the thread lines without having to cause an axial displacement of the compensation element 5, for example, see Figure 1B and 1C and related descriptions.

[0107] This second compensating movement AB2 serves to synchronize the thread engagement, in particular the compensating thread engagement between the compensating element 5 and the base element 4, and the tightening engagement between the connecting element 6 and the first nut element 8. To this end, the second nut element 9 is arranged in the recess 52 in the compensating element 5, at least with a synchronization height S1, in particular in such a way that at least one pitch of the first thread engagement G1 is arranged below the end face or flange surface of the compensating element 5 (in particular pressed).

[0108] In other words: the synchronization height S1 corresponds to at least one thread pitch. In the starting position AP1 , the second nut element 9 is located on the inside, so that the second nut element 9 can be moved axially without the compensating element 5 having to move axially.

[0109] Furthermore, the second nut element 9 can also be at least partially moved out of the groove 52. When the device 1 is assembled, the second nut element 9 can in particular be moved out of the groove 52 during the second compensating movement AB2 until the second nut element 9 abuts against the bottom side 32 of the second component 3, see for example Figure 1C and 6B When the connecting element 6 is screwed into the device 1 , in particular into the first nut element 8 , the second nut element 9 alone performs a movement which represents a second compensating movement AB2 relative to the compensating element 5 and the base element 4 and relative to the components 2 and 3 .

[0110] Figure 5A This is a simplified schematic cross-sectional view of the region of the second thread engagement G2 between the connecting element 6 and the first nut element 8 after the compensating element 5 has been moved to the compensating position AP2 due to the first compensating movement AB1 and before its thread starts are introduced or engaged during the screwing of the connecting element 6 into the first nut element 8. In this embodiment, there is a thread offset ΔG of approximately zero (also referred to as zero offset) between the two thread starts of the second thread engagement G2. Consequently, when the connecting element 6 is screwed into the first nut element 8, the two thread starts are introduced into one another, as indicated by the arrows PF1 and PF2.

[0111] Figure 5B The device 1 is shown in the assembled state, with the compensating element 5 moved to its compensating position AP2 during assembly due to its first compensating movement AB1. Due to the thread offset ΔG, synchronization of the thread start with the second thread engagement G2 is not necessary. Consequently, in this embodiment, no second compensating movement AB2 of the second nut element 9 occurs. The second nut element 9 remains in its starting position AP1. Based on the first compensating movement AB1, the compensating element 5 moves to its compensating position AP2 and rests against the bottom side 32 of the second component 3.

[0112] Since the thread starts are introduced asynchronously, the connecting element 6 can be screwed into the first nut element 8 until the bottom side 62 of the head of the connecting element 6 abuts against the top side 33 of the second component 3. In this assembled final state of the device 1, the two components 2 and 3 are connected by means of the device 1 in a manner that compensates for axial tolerances.

[0113] The first nut element 8 can be constructed separately or attached, in particular welded, to the first component 2 .

[0114] In an alternative embodiment not shown in detail, the first component 2 has a component thread in the through-hole 21 , with which the connecting element 6 engages in a connecting manner, so that the first nut element 8 is omitted.

[0115] Figure 6AThe present invention is a simplified schematic cross-sectional view of another example of the region of the second thread engagement G2 between the connecting element 6 and the first nut element 8 after the compensating element 5 has been moved into the compensating position AP2 due to the first compensating movement AB1 and before the thread start of the second thread engagement G2 is introduced or engaged during screwing of the connecting element 6 into the first nut element 8. The compensating element 5 has already been moved into its compensating position AP2.

[0116] When the connecting element 6 is further screwed into the first nut element 8 , the thread of the connecting element 6 may not immediately engage with or abut against the thread of the first nut element 8 .

[0117] exist Figure 6A In the embodiment shown, there is a thread offset ΔG greater than zero between the two thread starts of the second thread engagement G2. It is therefore necessary to synchronize the two thread starts for reliable introduction, see arrows PF3 and PF4. In the embodiment shown, the thread offset ΔG is approximately 350°.

[0118] Therefore, in order to synchronize the two thread lines of the second thread engagement G2, the second nut element 9 is moved axially relative to the compensating element 5 and independently thereof according to a second compensating movement AB2, based on the third thread engagement G3 between the second nut element 9 and the connecting element 6. The second nut element 9 is moved axially, independently of the compensating element 5, counter to the insertion direction of the connecting element 6 until the thread lines of the connecting element 6 engage with the thread lines of the first nut element 8. The maximum length of the second compensating movement AB2 corresponds approximately to the synchronization height S1.

[0119] Depending on the arrangement of the thread threads relative to one another, the synchronization height S1 can in some cases be up to 360° per revolution until the thread threads engage. Each revolution can, for example, correspond approximately to one thread pitch. This pitch can, in turn, roughly correspond to the synchronization height S1 and / or the height gap S.

[0120] Figure 6B The device 1 is shown in an assembled state, wherein due to the larger thread deflection ΔG both the compensation element 5 and the second nut element 9 have been moved into the compensation position AP2 .

[0121] After the threads of the second thread engagement G2 have been synchronized, the connecting element 6 is screwed into the first nut element 8 by screwing the connecting element 6 further into the device 1 until the bottom side 62 of the head of the connecting element 6 abuts against the top side 33 of the second component 3. In this assembled final state of the device 1, the two components 2 and 3 are connected by means of the device 1 in a manner that compensates for axial tolerances.

[0122] The first nut element 8 can be constructed separately or attached, in particular welded, to the first component 2 .

[0123] In an alternative embodiment not shown in detail, the first component 2 has a component thread in the through-hole 21 , with which the connecting element 6 engages in a connecting manner, so that the first nut element 8 is omitted.

[0124] Figure 7A and 7B 1 is a perspective partial sectional view of the device 1 in the assembled state without the connecting element 6 and the second nut element 9 , wherein the compensating element 5 is in the starting position AP1 .

[0125] The inner profile 51 is tapered, having a first radius 512 located at the upper end of the second compensating section 523 and a second radius 513 located at the lower end of the second compensating section. The first radius 512 is larger than the second radius 513. In addition, a chamfer 514 may be provided on the upper edge of the second compensating section 523.

[0126] like Figure 7B As shown, the free end 533 of the fixing arm 532 of the compensating element 5 has a protrusion 534, which engages with the fixing groove 43 in the base element 4 before assembly with the components 2 and 3. The engagement of the protrusion 534 in the fixing groove 43 creates a torsion-proof structure between the compensating element 5 and the base element 4. This torsion-proof structure between the compensating element 5 and the base element 4 serves to provide support and protection when the device 1 is pre-assembled on the first component 2 and / or to protect the device 1 during transport before installation on the components 2 and 3.

[0127] Figure 8A and 8B 1 is a perspective partial sectional view of the device 1 in the assembled state without the connecting element 6 and the second nut element 9 , wherein the compensating element 5 is in the compensating position AP2 .

[0128] Reference Signs

[0129] 1 device

[0130] 2. First component

[0131] 21 through holes

[0132] 3 Second component

[0133] 31 through holes

[0134] 32 bottom side

[0135] 33 Top side

[0136] 4 Basic components

[0137] 41 Retaining flange

[0138] 42 Basic element thread

[0139] 43 fixing groove

[0140] 5 Compensation components

[0141] 50 integrated transmission parts

[0142] 51 inner contour

[0143] 511 Arched Structure

[0144] 512 First Radius

[0145] 513 Second Radius

[0146] 514 Chamfer

[0147] 52 grooves

[0148] 521 First compensation section

[0149] 522 Accommodation section

[0150] 523 Second compensation section

[0151] 524 longitudinal splices

[0152] 525 Hexagonal Profile

[0153] 53 flange

[0154] 531 Groove

[0155] 532 Fixed Arm

[0156] 533 Free End

[0157] 54 hollow cylindrical rod

[0158] 55 Compensating thread

[0159] 56 annular groove

[0160] 6 Connecting elements

[0161] 61 Outer contour

[0162] 611 Arched Structure

[0163] 62 bottom of head

[0164] 63 screw head

[0165] 64 threaded rod

[0166] 7 protrusion

[0167] 8 first nut element

[0168] 9 Second nut element

[0169] A vertical axis

[0170] AB1 first compensation movement

[0171] AB2 Second Compensation Movement

[0172] AP1 starting position

[0173] AP2 compensation position

[0174] B, C axis (horizontal axis)

[0175] H1 First cavity

[0176] H2 Second cavity

[0177] KF Force Flow

[0178] KF1 changed force flow

[0179] PF1 to PF arrow

[0180] S Height Clearance

[0181] S1 Synchronous Height

[0182] ZS tensile stress

[0183] ΔG thread offset

Claims

1. A device (1) for compensating for tolerances between two components (2, 3) to be connected, comprising a hollow cylindrical base element (4), and a hollow cylindrical compensating element (5) which has a first threaded engagement (G1) with the base element (4) and can be moved from a starting position (AP1) to a compensating position (AP2) by twisting relative to the base element (4), a connecting element (6) extending at least through the first cavity (H1) of the device (1) for connecting the two components (2, 3) to be connected, wherein the first cavity (H1) has an inner contour (51) in cross section, and the connecting element (6) has an outer contour (61) in cross section, wherein the inner profile (51) or the outer profile (61) has at least one radially extending arched structure (511, 611) in cross section, and wherein when the inner profile (51) and the outer profile (61) are concentrically aligned, at least one radial protrusion (7) and / or an integrated transmission element (50) is formed in the cross section by the at least one arched structure (511) of the inner profile (51) or the outer profile (61), and wherein when the device (1) is assembled, the connecting element (6) forms a second threaded engagement (G2) with the first nut element (8), characterized in that The compensating element (5) has a hole (52) in which a second nut element (9) is arranged in a rotationally fixed and axially displaceable manner for synchronizing the first thread engagement (G1) and the second thread engagement (G2).

2. The device (1) according to claim 1, wherein the arched structure (511, 611) is in the shape of an incomplete circle or an arc, or is constructed as a spherical arched structure.

3. The device (1) according to claim 1 or 2, wherein the compensation element (5) is formed in one piece.

4. The device (1) according to claim 1 or 2, characterized in that No spring build solution.

5. The device (1) according to claim 1 or 2, wherein the outer contour (61) is circular, or vice versa, in the case where the inner contour (51) is not circular.

6. The device (1) according to claim 1 or 2, wherein the inner contour (51) or the outer contour (61) is oval, elliptical or trilobal in cross section.

7. The device (1) according to claim 1 or 2, wherein the inner contour (51) has a conical shape.

8. The device (1) according to claim 1 or 2, wherein the inner contour (51) forms a friction fit with the outer contour (61) at least when the device (1) is assembled.

9. The device (1) according to claim 1 or 2, wherein the compensating element (5) and the connecting element (6) form a friction fit in such a way that a torque applied by the connecting element (6) can be transmitted to the compensating element (5).

10. The device (1) according to claim 1 or 2, wherein the inner contour (51) is provided with an engagement structure.

11. The device (1) according to claim 1 or 2, wherein the compensating element (5) is at least partially deformable.

12. The device (1) according to claim 1 or 2, wherein the compensating element (5) and the base element (4) coaxially surround the connecting element (6).

13. The device (1) according to claim 1 or 2, wherein the compensating element (5) is arranged axially movably in the base element (4).

Images