Device for compensating 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, having a hollow-cylindrical basic element (4), a hollow-cylindrical compensation element (5) which forms a first screw engagement (G1) with the basic element (4) and which can be moved from a starting position (AP1) to a compensation position (AP2) by being twisted relative to the basic element (4), and a connecting element (6) for connecting the two components (2, 3) together which extends through a first hollow space (H1) of the device (1), wherein the connecting element (6) forms a second screw engagement (G2) with one of the components (2) and / or a first nut element (8), and wherein a second nut element (9) is arranged in a recess (52) of the compensation element (5) in such a way that it forms a third screw engagement (G3) with the connecting element (6) when the connecting element (6) is screwed into the device (1), wherein the second nut element (9) can be moved axially at least partially independently of and relative to the compensation element (5) when the connecting element (6) is screwed into one of the components (2, 3) and / or the first nut element (8).

Description

Technical Field

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

[0002] A known device (also simply called a compensation device) for compensating for tolerances between two components consists of a base element or matrix and an axial compensation element, such as a threaded metal sleeve, which are in thread engagement, for example, a left-hand thread engagement. This axial compensation element typically includes a spring element that establishes a frictional connection between the axial compensation element and a connecting element that passes through the compensation element and has another thread (right-hand thread). This spring element applies torque to the axial compensation element when the connecting element is tightened, for example, rotated, causing the compensation element to rotate axially out of the base element in the opposite direction to the insertion direction of the connecting screw, thereby compensating for the axial tolerance. Summary of the Invention

[0003] The purpose of this invention is to provide a device with a particularly simple structure for compensating for tolerances between two components to be connected.

[0004] The solution of the present invention to achieve the above-mentioned objective is a device having the features described below for compensating for tolerances between two components to be connected.

[0005] See below for suggested improvements.

[0006] The present invention provides a device for compensating tolerances between two components to be connected, comprising a hollow cylindrical base element, a hollow cylindrical compensating element that forms a first thread engagement with the base element and is movable from a starting position to a compensated position by twisting relative to the base element, and a connecting element extending through a first cavity of the device for connecting the two components together, wherein the connecting element forms a second thread engagement with one and / or a first nut element of the components, and wherein the second nut element is arranged in a groove of the compensating element such that when the connecting element is screwed into the device, the second nut element forms a third thread engagement with the connecting element, wherein as the connecting element is further screwed into one and / or the first nut element of the components, the second nut element can be moved, at least partially independently of the compensating element and axially relative to the compensating element, particularly in the opposite direction to the screwing in direction of the connecting element, and is particularly adjustable.

[0007] The main advantage of this invention is that the compensating element and the basic element are at least partially outside the force flow of the connecting element. Specifically, during assembly and screwing the connecting element into the device, a third thread engagement is appropriately implemented between the second nut element and the connecting element, generating a force flow such that only the second nut element, and not the compensating element, is axially movable or mobile. This allows for easy synchronization of at least one of the other thread engagements, particularly the second thread engagement, such as the threads of the connecting element and the first nut element. In the assembled state, the torque of the tightening process causes a force flow and results in a clamping connection (also called clamping) between the connecting element and the second nut element, particularly between the connector and the second nut element. The force of the connecting element, particularly the connecting screw, clamps the second nut element and one of the components together and secures them together. This prevents clamping loads or tensions between other components, particularly between the compensating element and the basic element. Thus, the compensating element and the basic element can be made of, for example, plastic material. Axial tolerance compensation is achieved by the threads of the two nut elements and the connecting element.

[0008] According to one possible implementation, the second nut element is arranged with at least one synchronization height lower than the flange surface or end face of the compensating element. For example, the synchronization height corresponds to at least one pitch of the first thread engagement between the compensating element and the base element.

[0009] In another embodiment, the second nut element is form-fitted in the compensating element in the initial position. In other words, at least in the initial position, the second nut element is torsionally arranged in the compensating element. For example, the compensating element includes a receiving section in which the second nut element is form-fitted in the initial position.

[0010] Furthermore, the receiving section includes multiple longitudinal tabs. For accommodating the second nut element, the receiving section preferably has a hexagonal profile, particularly for accommodating the nut head.

[0011] According to another embodiment, the longitudinal tab extends along the longitudinal axis in the receiving section and has a decreasing height in the direction toward the flange surface. Specifically, the longitudinal tab has a shape and / or size such that the second nut element is at least form-fittedly arranged in the receiving section along the direction of rotation. Furthermore, the longitudinal tab may have a shape and / or size such that the second nut element is at least frictionally fitted axially along the longitudinal axis of the device in the receiving section.

[0012] When the connecting element is inserted into the second nut element, they form a threaded engagement. As the connecting element is further inserted through the second nut element into the compensating element, the connecting element and the compensating element form a driving engagement to achieve axial compensating movement. During this process, the compensating element moves in the opposite direction to the insertion direction of the connecting element and relative to the base element. The second nut element is arranged in the receiving section of the compensating element so that it is driven as the compensating element moves.

[0013] In particular, when the connecting element is further screwed into the device towards the first nut element (such as a weld nut), there may be situations where the thread of the connecting element cannot immediately engage with the thread of the first nut element, for example, due to component tolerances.

[0014] Therefore, based on the third thread engagement between the connecting element and the second nut element, a torque is applied to the second nut element, which overcomes the form fit on the longitudinal tab, causing the second nut element to be axially screwed into or out of the receiving section in the opposite direction to the insertion direction of the connecting element. The second nut element is axially screwed into or at least partially screwed out of the receiving section, particularly in the direction of the flange surface, independently of the compensating element and the base element. This causes the second nut element to move axially, particularly within the receiving section, until the thread of the connecting element engages with or is inserted into the thread of the first nut element. This movement can, for example, reach 360° per revolution, and thus specifically refers to one thread pitch.

[0015] Therefore, the second nut element has a corresponding internal thread. The connecting element is constructed as a connecting screw or bolt with a corresponding external thread.

[0016] The basic component and the compensation component can both be made of plastic. Alternatively, other materials, such as metal, can be used. The basic component and the compensation component can be made of the same material or different materials.

[0017] Furthermore, the compensating element and the basic element coaxially surround the connecting element. Both the compensating element and the basic element have longitudinal extensions, i.e., extensions along the longitudinal axis. The compensating element and the basic element are particularly rotationally symmetrical about their longitudinal axis. In the assembled state of the device, the longitudinal axes of the compensating element, the basic element, and the connecting element coincide. Furthermore, the compensating element is arranged within the basic element in a manner that allows axial movement for tolerance compensation. Attached Figure Description

[0018] The embodiments of the present invention will be described in detail with reference to the accompanying drawings. Wherein: Figures 1A to 1C This is a schematic diagram of an embodiment of a device for compensating for tolerances between two components. The device is 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 synchronous height. Figure 2A and 2B These are schematic diagrams of a first embodiment, showing the inner contour of the compensation element and the outer contour of the connecting element, respectively. Figure 2C and 2D These are schematic diagrams of a second embodiment, showing the inner contour of the compensation element and the outer contour of the connecting element, respectively. Figure 2E and 2F The diagram shows the inner contour of the compensation element and the outer contour of the connecting element, respectively, of the third embodiment. Figure 3A and 3B A top view or perspective view of an embodiment of the compensation element. Figure 4 This is a cross-sectional view of an embodiment of the device without connecting elements. Figure 5A and 5B This diagram illustrates the movement direction of the components during the tolerance-compensated connection between the two parts, and the completed assembly of the device, with the compensating element in the initial position. Figure 6A and 6B This diagram illustrates the movement direction of the components during the tolerance-compensated connection between the two parts, and the completed assembly of the device, with the compensation element in its compensated position. Figure 7A and 7B This is a partial perspective cross-sectional view of the device in its assembled state, without connecting elements and the second nut element, with the compensation element in the initial position. Figure 8A and 8B This is a partial perspective cross-sectional view of the device in its assembled state, without connecting components and the second nut component, showing the compensation element in its compensation position. The same parts in all the accompanying drawings are indicated by the same reference numerals. Detailed Implementation

[0019] Figure 1A This is a schematic diagram of an embodiment of a device 1 for compensating for tolerances, particularly axial tolerances, and especially height clearance S, between two components to be connected. The device 1 is configured, for example, to attach a first component 2, such as a bearing housing, electronic component, lamp, or trim piece, to a second component 3, such as a door panel, load-bearing structure, or vehicle body structure.

[0020] The device 1 includes at least one hollow cylindrical basic element 4 and a hollow cylindrical compensating element 5. The hollow cylindrical basic element 4 is configured as a retaining element for the first member 2. For this purpose, the first member 2 has at least one or more notches not shown in detail. The basic element 4 includes at least one or more flexible retaining flanges 41 that pass through the notches and retainably abut against the bottom side of the first member 2.

[0021] Figure 1A The device 1 in a partially assembled state at the starting position AP1 is shown, wherein the compensation element 5 is arranged at a distance corresponding to the height gap S of the second member 3.

[0022] At least during the assembly of device 1, the compensating element 5 forms a first threaded engagement G1 with the basic element 4, wherein the compensating element 5 can be moved from the initial position AP1 to the compensating position AP2 in a first compensating movement AB1 by torsion relative to the basic element 4, in order to compensate for the height clearance S. Figure 1A and 1B The sequence shown illustrates this situation.

[0023] Figure 1B The device 1 is shown in the compensated position AP2, where the height gap S is compensated and the two components 2 and 3 are connected by means of the connecting element 6, in particular by means of the clamping connection.

[0024] 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.

[0025] When the device 1 is assembled, the connecting element 6 forms a second thread engagement G2 with one of the components 2 and 3 and / or the first nut element 8, in particular for connecting the two components 2 and 3 together, especially for clamping them together.

[0026] To synchronize the first thread engagement G1 with the second thread engagement G2 during assembly of device 1, a second nut element 9 is provided. The second nut element 9 is arranged in the compensating element 5 such that it moves at least partially independently of the compensating element 5 and axially relative to it, particularly according to the second compensating movement AB2, which will be described in detail below.

[0027] The assembly process is as follows: The basic element 4 and the compensating element 5 are arranged together on the first member 2 in a screwed state, particularly clamped, for example, connected to the first member 2 by means of a retaining flange 41. The second nut element 9 is arranged in a receiving portion, particularly in the receiving section 522 of the compensating element 5, in a torsion-resistant manner.

[0028] A through hole 31 concentric with the opening of the receiving part is provided for the second component 3.

[0029] The connecting element 6, particularly the screw having a screw head 63 and a threaded rod 64, is inserted through the through hole 31 in the second member 3, and in particular screwed into the second nut element 9. The second nut element 9 is arranged in the compensating element 5 in a torsion-resistant manner.

[0030] The connecting element 6 is then further inserted into the compensating element 5 and contacts the non-circular inner contour 51 of the compensating element 5. Alternatively, as an alternative to the non-circular inner contour 51, a conventional driving element (not shown in detail), especially a spring element, can be arranged in the compensating element 5.

[0031] This causes the first compensating motion AB1, in which the compensating element 5 abuts against the second component 3 via the connecting element 6, driven by the non-circular inner contour 51 or the spring element. (See reference) Figure 1B In other words, connecting element 6 and compensating element 5 engage to achieve a first compensating movement AB1, specifically axial. The compensating element 5 is inserted in the opposite direction to connecting element 6 and moves relative to the base element 4. This first axial compensating movement AB1 compensates for the axial tolerance between the two components 2 and 3. The maximum length of the first compensating movement AB1 approximately corresponds to the height clearance S.

[0032] The connecting element 6 and the inner contour 51 of the compensating element 5 form a frictional fit. Due to the frictional fit, the connecting element 6 transmits torque to the compensating element 5, causing the compensating element 5 to move relative to the second nut element 9 in the opposite direction to the insertion direction of the connecting element 6 and axially relative to the base element 4 toward the second member 3 according to the first compensating movement AB1, until the compensating element 5 abuts against the bottom side 32 of the second member 3. (See reference...) Figure 1B Or 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 the first compensation movement AB1, in which the compensation element 5 moves axially relative to the basic element 4 and relative to the components 2 and 3 in the direction of the second component 3. This compensates for the axial tolerance between the components 2 and 3.

[0033] The second nut element 9 is arranged in the compensating element 5 so that it can be driven during the first compensating movement AB1 of the compensating element 5. In other words, during the first compensating movement AB1 of the compensating element 5, the second nut element 9 moves relative to the basic element 4 and members 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 in a manner that allows it to move axially up and down, so that the compensating element 5 does not need to drive the second nut element 9.

[0034] When the connecting element 6 is further inserted into the device 1, the thread of the connecting element 6 may not immediately engage with or come into contact with the thread of the first nut element 8.

[0035] Therefore, to synchronize the two threads, based on the threaded engagement between the second nut element 9 and the connecting element 6, the second nut element 9 moves axially relative to and independently of the compensating element 5 according to the second compensating movement AB2. The second nut element 9 moves axially in the opposite direction to the insertion direction of the connecting element 6, independently of the compensating element 5, until the thread of the connecting element 6 engages with the thread of the first nut element 8. The maximum length of the second compensating movement AB2 approximately corresponds to the synchronization height S1.

[0036] To synchronize the threads 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 tab 524, causing the second nut element 9 to be axially screwed into or out of the receiving section 522 in the opposite direction to the insertion direction of the connecting element 6. The second nut element 9 is axially screwed into or at least partially out of the receiving section 522, particularly in the direction of the flange surface, independently of the compensating element 5 and the base element 4. The second nut element 9 moves axially, particularly within 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 is used to synchronize the threads of the second thread engagement G2 and to form a second compensating movement AB2.

[0037] Depending on the arrangement of the threads relative to each other, the synchronization length can, in some cases, reach 360° per revolution until the threads engage. This synchronization length, according to the second compensating motion AB2, has a corresponding adjustable synchronization height S1 of the second nut element 9. Each revolution can, for example, be approximately one pitch. This one pitch can, in turn, roughly correspond to the synchronization height S1 and / or the height clearance S.

[0038] However, the second compensating movement AB2 may not fully compensate for the height clearance S, because, for example, only half the pitch is needed for the connecting element 6 to engage with the first nut element 8, specifically its thread. In this case, the synchronization height S1 is less than the height clearance S, see [reference]. Figure 1B .

[0039] When only the compensating element 5 is tensioned on the second member 3 by means of the connecting element 6, the 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 basic element 4.

[0040] Furthermore, the torque during the tightening process of the two components 2 and 3 can, in some cases, cause a change in the compressive stress flow KF1, which differs from that of a conventional clamping connection, particularly between the connecting element 6 and the second nut element 9, and especially between the screw head 63 and the second nut element 9, resulting in a clamping connection (also known as clamping). In the assembled state of the device 1, the connecting element 6 is subjected to a tensile stress ZS.

[0041] The changed force flow KF1 is in Figure 1C As shown in the image.

[0042] During the second compensating motion AB2, the second nut element 9 abuts against the second member 3, such that the tension of the connecting element 6 tensions and fixes the second nut element 9 and the second member 3 together.

[0043] As an alternative or supplementary solution, for example, if these components are plastic, then during assembly, that is, during the screwing process or in the future in the assembled state, some kind of adjustment behavior can occur between the basic component 4 and the compensation component 5, so that the altered force flow KF1 always occurs in the device 1.

[0044] When a changed force flow KF1 occurs between the connecting element 6 and the second nut element 9 in the assembled state of device 1, clamping loads or tensions can be prevented between other components, especially between the compensating element 5 and the basic element 4.

[0045] The second nut element 9 is arranged in the groove 52 of the compensating element 5 such that when the connecting element 6 is screwed into the device 1, the second nut element 9 forms a third thread engagement G3 with the connecting element 6. Thus, when the connecting element 6 is screwed into the first member 2 and / or the first nut element 8, the second nut element 9 moves at least partially independently of the compensating element 5 and axially relative to it, as described in the previous detailed description.

[0046] Therefore, the compensating element 5 and the basic element 4 are outside the altered force flow KF1 of the second nut element 9 and the connecting element 6 in the assembled state of the device 1. Since the connecting element 6 and the second nut element 9 are press-fitted by the third thread engagement G3, the second nut element 9 can move axially in the device 1 without the compensating element 5, thereby simply achieving synchronization of the first and second thread engagements G1 and G2.

[0047] Furthermore, the first cavity H1 has an inner contour 51 in cross-section. The connecting element 6 has an outer contour 61 in cross-section.

[0048] The first cavity H1 is formed by the hollow inner cavity of the compensating element 5. The inner contour 51 is formed on the inner wall of the compensating element 5.

[0049] Furthermore, the connecting element 6 passes through the second cavity H2 formed by the hollow inner cavity of the basic element 4.

[0050] In this embodiment, the basic element 4 is coaxially arranged within the compensating element 5. Alternatively, the compensating element 5 may also be coaxially arranged within the basic element 4, see [reference needed]. Figure 4 .

[0051] The main difference between the inner contour 51 and the outer contour 61 is that, when the inner contour 51 and the outer contour 61 are concentrically aligned, at least one radial protrusion 7 and / or an integrated transmission element 50 are formed, see [link to relevant documentation]. Figures 2A to 2E .

[0052] By employing this contour configuration having at least one radial protrusion 7 and / or at least one integrated transmission element 50, a targeted compression fit can be achieved at least partially 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. Thus, a springless construction scheme is achieved compared to conventional compensating devices. Through this configuration of the inner contour 51 (particularly a non-circular inner contour 51), the radial protrusion 7 and / or integrated transmission element 50 are formed on the compensating element 5 in the device 1. The compression fit is achieved, in particular, through the interaction of the inner contour 51 and the outer contour 61, thereby transmitting and applying the torque of the connecting element 6 to the compensating element 5. Furthermore, the number of components in the device according to the invention is reduced.

[0053] Figure 2A and 2B These are simplified cross-sectional schematic diagrams of the inner contour 51 of the compensation element 5 and the outer contour 61 of the connecting element 6, respectively. Figure 2A As shown in Figure 2B, the inner contour 51 and outer contour 61 lie in the plane formed by two axes B and C, wherein axes B and C are perpendicular to each other and perpendicular to the longitudinal axis A of device 1. The longitudinal axis A passes through the intersection of these two axes B and C.

[0054] The corresponding inner contour 51 is substantially non-circular. The corresponding outer contour 61 is substantially circular. In this embodiment, according to Figure 2A The inner contour 51 is trilobal in shape 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 integrated transmission element 50 is formed. Figure 2B As shown, the inner contour 51 can also be constructed in such a way that it forms four radial protrusions 7 and / or an integrated transmission element 50. This inner contour 51 is also referred to as a four-cornered circle.

[0055] Alternatively, the outer contour 61 may be non-circular, and the inner contour 51 may be generally circular, see reference. Figure 2E and 2F .

[0056] Inner contour 51 (e.g.) Figures 2A to 2D (As shown) has at least one radially outwardly extending arched structure 511 in its cross-section, particularly projecting from the inner circumference. The inner contour 51 preferably has a plurality of arched structures 511 evenly distributed around the inner circumference of the compensating element 5.

[0057] In an alternative embodiment of 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 may be provided on the outer contour 61 of the connecting element 6. (See reference...) Figure 2E , 2F .

[0058] When the inner contour 51 of the compensation element 5 and the outer contour 61 of the connecting element 6 are concentrically aligned, in the cross-section, at least one arched structure 511 of the inner contour 51 ( Figures 2A to 2D ) or at least one arched structure 611 of connecting element 6 ( Figure 2E and 2F ) Forming radial protrusions 7 and / or integrated transmission elements 50, particularly integrated transmission sections.

[0059] Figure 2A This is a top-down view of the first embodiment of the inner contour 51 and outer contour 61. The outer contour 61 of the connecting element 6 is circular, particularly rounded. According to... Figure 2A The inner contour 51 of the compensation element 5 has three arched structures 511, which are arranged evenly on the inner circumference of the compensation element 5. Figure 2B for Figure 2A The top-down view of the inner contour 51 and the outer contour 61 shown.

[0060] Figure 2C This is a top-down view of the second embodiment of the inner contour 51 and outer contour 61. The outer contour 61 is circular, particularly rounded. According to... Figure 2C The inner contour 51 has four arched structural parts 511, which are evenly distributed on the inner circumference of the compensating element 5. Figure 2D for Figure 2C The top-down view of the inner contour 51 and the outer contour 61 shown.

[0061] Figure 2E This is a top-down view of the third embodiment of the inner contour 51 and outer contour 61. The inner contour 51 is circular, particularly rounded. According to... Figure 2E The outer contour 61 has three arched structures 611, which are evenly distributed on the outer circumference of the connecting element 6. Figure 2F for Figure 2C The top-down view of the inner contour 51 and the outer contour 61 shown.

[0062] In all embodiments, the inner contour 51 of the compensation element 5 is cylindrical. Specifically, the corresponding inner contour 51 of each embodiment is tapered or truncated cone in longitudinal section, having 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.

[0063] The first radius 512 is, for example, a circle. The second radius 513 is, for example, a triangular circle or a trefoil shape, such as... Figure 2A and 2B As shown, or a four-cornered circle, such as Figure 2C and 2D As shown. The arched structure 511 on the inner circumference of the compensating element 5 or the arched structure 611 of the connecting element 6 extends in the longitudinal extension of the compensating element 5 and the connecting element 6, particularly through... Figure 3B The compensation section 523 shown extends upwards.

[0064] The corresponding arch structure 511 or 611 can be an incomplete circle or arc shape, or constructed as a spherical arch structure. When multiple arch structures 511 or 611 are provided, they all have the same shape.

[0065] The compensation element 5 is integrally molded. The compensation element 5 is constructed without a spring. The compensation element 5 does not have a spring element.

[0066] To connect the two components 2 and 3 together, a first nut element 8 is provided on the bottom side 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 respectively include associated through holes 21 and 31 for connecting the 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.

[0067] To assemble the device 1, the first component 2 and the second component 3 are screwed together. For example, the device 1 is positioned on the first component 2 by means of a base element 4 and held therein by means of a retaining flange 41. The second component 3 is positioned on the side of the compensating element 5 opposite to the base element 4. The connecting piece 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.

[0068] The compensating element 5 and the connecting element 6 form a frictional fit, at least partially and particularly in the region of the inner contour 51 and the outer contour 61. The frictional fit between the compensating element 5 and the connecting element 6 allows the torque applied by the connecting element 6 to be transmitted to the compensating element 5 when the two components 2 and 3 are connected together. The undesired height gap S between the two components 2 and 3 is compensated and closed by screwing them together, wherein during the screwing process, the compensating element 5 moves axially from the starting position AP1 to the compensated position AP2, as indicated by the arrow of the first compensating movement AB1. Figure 1A As shown, in the initial position AP1, the compensation element 5 is arranged at a distance from the bottom side 32 of the second member 3 according to the height gap S. In the compensation position AP2, the compensation element 5 abuts against the bottom side 32 of the second member 3. (Refer to...) Figure 1B Or 1C.

[0069] The basic element 4 and the compensation element 5 can each be made of plastic. Alternatively, other materials, such as metal, can also be used. The basic element 4 and the compensation element 5 can be made of the same material or different materials.

[0070] Depending on the size and / or number of radial protrusions 7, the inner contour 51 and the outer contour 61 may also form a form fit. The larger the radial protrusions 7, the more likely the inner contour 51 and the outer contour 61 are to form a form fit in addition to a friction fit.

[0071] Optionally, the inner contour 51 and / or the outer contour 61 may be provided with an engagement structure (not shown in detail). For example, the inner contour 51 and / or the outer contour 61 may be provided with a friction layer, such as a fine-grained or coarse-grained top layer. This enhances the clamping fit between the connecting element 6 and the compensating element 5 in the area of ​​the engagement contour.

[0072] Furthermore, device 1 includes a second nut element 9. The second nut element 9 is used to synchronize the movement of the compensating element 5 relative to the basic element 4 and the movement of the connecting element 6 relative to the compensating element 5 and the first nut element 8, as described previously. Figure 1B and 1C The relevant description is as follows. Therefore, the second nut element 9 is arranged in the groove 52 of the compensating element 5.

[0073] Figure 3A and 3B A top view or perspective view of an embodiment of the axial compensation element 5.

[0074] The axial compensating element 5 has a flange 53. The flange 53 is constructed as a protrusion or radial projection on a hollow cylindrical rod 54.

[0075] The groove 52 is stepped. In an embodiment, the groove 52 has a first compensation section 521 for the second nut element 9, a receiving section 522 for the second nut element 9, and a second compensation section 523 for the compensation element 5.

[0076] like Figure 3A As shown, the second compensation section 523 has a non-circular inner contour 51, particularly a trilobal cross-section, which allows for frictional engagement with the connecting element 6 upon screwing in. Figure 2B As shown, the inner contour 51 can also have other suitable cross-sectional shapes, especially diagonal circles, quadrangular circles or polygonal circles.

[0077] like Figure 3B As shown, the inner contour 51 also has a tapered shape in the longitudinal section. This tapered shape facilitates the frictional fit between the connecting element 6 and the compensating element 5 during tolerance-compensating movements between the two components 2 and 3.

[0078] In addition, the inner contour 51 may be provided with an engagement structure not shown in detail, especially a friction layer.

[0079] The second nut element 9 is arranged in the receiving section 522 in a form-fit manner in its initial position AP1. For this purpose, the receiving section 522 has a plurality of longitudinal tabs 524, which are particularly symmetrically distributed. When assembling the device 1, the second nut element 9 is inserted, in particular pressed into, the receiving section 522, wherein the longitudinal tabs 524 form a form fit between the second nut element 9 and the compensating element 5.

[0080] The second nut element 9 is, for example, a hexagonal nut. For this purpose, the receiving section 522 is on the inside and at least partially has a corresponding hexagonal profile 525.

[0081] A groove 531 is inserted into the region of flange 53, thereby forming a flexible fixing arm 532. Figure 7B This will be explained in detail in the text.

[0082] like Figure 3B As shown, the longitudinal tab 524 extends at least partially along the longitudinal axis A in the region of the receiving section 522. The longitudinal tab 524 has a decreasing height in the direction toward the first compensation section 521. Furthermore, the longitudinal tab 524 has a certain 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, particularly in the rotational direction of the connecting element 6. In addition, the second nut element 9 is arranged in a friction-fitting manner, particularly axially along the longitudinal axis A, in the receiving section 522.

[0083] The height of the second nut element 9 roughly corresponds to the height of the accommodating section 522.

[0084] When the connecting element 6 is inserted into the second nut element 9, they engage with each other threadedly. 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.

[0085] Furthermore, the inner contour 51 of the compensating element 5 can be constructed to be flexible, bendable, or elastic. For this purpose, the compensating element 5 has an annular groove 56 on its end side opposite the flange 53. The annular groove 56 is specifically used to prevent material buildup during the injection molding process of the compensating element 5 made of plastic. Moreover, this compensating element 5 made of plastic with an annular groove 56 can achieve an elastic, uniform thickness shape.

[0086] In addition Figure 3A and 3B In the illustrated embodiment, the compensation element 5 further includes a compensation thread 55. The compensation thread 55 is... Figures 1A to 1C The corresponding embodiments shown in 5B and 6B are internal threads and... Figure 3B , 4 The corresponding embodiments shown in 7A and 8A are external threads.

[0087] In order to achieve threaded engagement between the compensating element 5 and the basic element 4, the basic element 4 has a corresponding basic element thread 42, which is as follows: Figure 4 , 7A As exemplarily shown in 8A. Figure 4 , 7A In the corresponding embodiment shown in 8A, the basic element thread 42 is an internal thread. Figures 1A to 1C In the corresponding embodiments shown in 5B and 6B, the basic element thread 42 is an external thread.

[0088] The base thread 42 can be constructed as a thread with a single thread crest. Alternatively, the base element thread 42 can also have multiple thread lines with corresponding thread crests, particularly two thread crests. With only one thread line, it is advantageous to enable tool opening / closing, thus achieving low-cost production. With two or more thread lines, a rotatable core is also required for demolding.

[0089] Figure 4 This is a cross-sectional view of device 1 without connecting element 6.

[0090] The second nut element 9 is arranged in a form-fitting manner in the receiving section 522 in the initial position AP1. The first compensation section 521 represents a certain synchronization height S1. When the connecting element 6 is screwed into the first nut element 8, the second nut element 9 axially compensates for this synchronization height independently of the compensation element 5 according to the second compensation movement AB2, so as to synchronize these threads without requiring the compensation element 5 to move axially, for example, see [reference missing] Figure 1B and1C The second compensating movement AB2 is used for synchronizing thread engagement, particularly the compensating thread engagement between the synchronizing compensating element 5 and the base element 4, and the fastening engagement between the synchronizing connecting element 6 and the first nut element 8. For this purpose, the second nut element 9 is arranged in a groove 52 in the compensating element 5 at least at a synchronizing height S1, particularly at least one pitch of the first thread engagement G1 lower than the end face or flange surface of the compensating element 5 (especially when pressed). In other words, the synchronizing height S1 corresponds to at least one pitch of the first thread engagement G1 between the compensating element 5 and the base element 4. The second nut element 9 is located internally in the initial position AP1, thereby allowing the second nut element 9 to move axially without requiring the compensating element 5 to move axially.

[0091] Furthermore, the second nut element 9 can also be at least partially removed from the groove 52. When the device 1 is assembled, the second nut element 9 can in particular be removed from the groove 52 during the second compensating movement AB2 until the second nut element 9 abuts against the bottom side 32 of the second member 3, for example, see [reference needed]. Figure 1C and 6B When the connecting element 6 is screwed into the device 1, especially the first nut element 8, the second nut element 9 moves independently, which represents a second compensating movement AB2 relative to the compensating element 5 and the basic element 4, and relative to the components 2 and 3.

[0092] Figure 5A This is a simplified schematic cross-sectional view of the area of ​​the second thread engagement G2 between the connecting element 6 and the first nut element 8 after the compensating element 5 has moved to the compensating position AP2 due to the first compensating movement AB1 and before its threaded head is engaged or inserted during the screwing of the connecting element 6 into the first nut element 8. In this embodiment, there is an approximately zero thread offset ΔG (also referred to as zero offset) between the two threaded heads of the second thread engagement G2. Therefore, when the connecting element 6 is screwed into the first nut element 8, the two threaded heads are engaged with each other, as shown by arrows PF1 and PF2.

[0093] Figure 5B The device 1 is shown in its assembled state, wherein the compensating element 5 moves to its compensating position AP2 during assembly due to its first compensating movement AB1. Because of the thread offset ΔG, synchronization of the thread head of the second thread engagement G2 is not required. Therefore, in this embodiment, the second compensating movement AB2 of the second nut element 9 does not occur. The second nut element 9 remains in its initial position AP1. Based on the first compensating movement AB1, the compensating element 5 moves to its compensating position AP2 and abuts against the bottom side 32 of the second member 3.

[0094] Because these threaded heads 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 member 3. In this final assembled state of the device 1, the two members 2 and 3 are connected by means of the device 1 in a manner that compensates for axial tolerances.

[0095] The first nut element 8 can be constructed separately or attached, in particular welded to, the first component 2.

[0096] In an alternative embodiment not shown in detail, the first member 2 has a member thread in the through hole 21, and the connecting element 6 engages with the member thread in a connecting manner, thereby omitting the first nut element 8.

[0097] Figure 6A A simplified schematic cross-sectional view of another example of the area of ​​the second thread engagement G2 between the connecting element 6 and the first nut element 8 after the compensating element 5 has moved to the compensating position AP2 due to the first compensating movement AB1 and before the threaded head of the second thread engagement G2 is introduced or engaged during the screwing of the connecting element 6 into the first nut element 8. The compensating element 5 has moved to its compensating position AP2.

[0098] 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 or abut against the thread of the first nut element 8.

[0099] exist Figure 6A In the illustrated embodiment, there is a thread offset ΔG greater than zero between the two threaded ends of the second thread engagement G2. Therefore, it is necessary to synchronize these two threaded ends for reliable engagement, see arrows PF3 and PF4. In the illustrated embodiment, the thread offset ΔG is approximately 350°.

[0100] Therefore, to synchronize the two threads of the second thread engagement G2, based on the third thread engagement G3 between the second nut element 9 and the connecting element 6, the second nut element 9 moves axially relative to and independently of the compensating element 5 according to the second compensating movement AB2. The second nut element 9 moves axially in the opposite direction to the insertion direction of the connecting element 6, independently of the compensating element 5, until the thread of the connecting element 6 engages with the thread of the first nut element 8. The maximum length of the second compensating movement AB2 approximately corresponds to the synchronization height S1.

[0101] Depending on the arrangement of the threads relative to each other, in some cases the synchronization height S1 can reach 360° per revolution until the threads are engaged. Each revolution can, for example, roughly correspond to one pitch. This pitch can then roughly correspond to the synchronization height S1 and / or the height clearance S.

[0102] Figure 6BThe device 1 is shown in its assembled state, wherein the compensating element 5 and the second nut element 9 are both moved to the compensating position AP2 due to a large thread offset ΔG.

[0103] After the threads of the second thread engagement G2 are synchronized, the connecting element 6 is screwed into the first nut element 8 by further screwing the connecting element 6 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 member 3. In this final assembled state of the device 1, the two members 2 and 3 are connected by means of the device 1 in a manner that compensates for axial tolerances.

[0104] The first nut element 8 can be constructed separately or attached, in particular welded to, the first component 2.

[0105] In an alternative embodiment not shown in detail, the first member 2 has a member thread in the through hole 21, and the connecting element 6 engages with the member thread in a connecting manner, thereby omitting the first nut element 8.

[0106] Figure 7A and 7B This is a partial perspective cross-sectional view of the device 1 in its assembled state without the connecting element 6 and the second nut element 9, wherein the compensation element 5 is in the initial position AP1.

[0107] The inner contour 51 is tapered, having a first radius 512 at the upper end of the second compensation section 523 and a second radius 513 at the lower end of the second compensation 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 compensation section 523.

[0108] like Figure 7B As shown, the free end 533 of the fixed arm 532 of the compensating element 5 has a protrusion 534 that engages with the fixing groove 43 in the basic element 4 before assembly with components 2 and 3. By engaging the protrusion 534 in the fixing groove 43, torsional resistance is formed between the compensating element 5 and the basic element 4. This torsional resistance between the compensating element 5 and the basic element 4 serves to provide support and protection when the device 1 is pre-installed on the first component 2, and / or to provide transport protection for the device 1 before installation on components 2 and 3.

[0109] Figure 8A and 8B This is a partial perspective cross-sectional view of the device 1 in its assembled state without the connecting element 6 and the second nut element 9, wherein the compensation element 5 is in the compensation position AP2.

[0110] Appendix Label Table 1 device 2 First Component 21 Through Hole 3 Second component 31 Through Hole 32 Bottom side 33 Top side 4 Basic Components 41. Maintain the flange 42 Basic Component Thread 43 Fixing groove 5. Compensation Components 50 Integrated transmission components 51 Inner contour 511 Arch structure 512 First radius 513 Second Radius 514 Chamfer 52 Grooves 521 First Compensation Section 522 Storage Section 523 Second Compensation Section 524 Longitudinal splicing 525 Hexagonal outline 53 Flange 531 Groove 532 Fixed Arm 533 Free End 54 Hollow cylindrical rod section 55 Compensating Thread 56 Annular groove 6 Connecting elements 61 Outer contour 611 Arch structure 62. Base of head 63 Screw head 64 Threaded rod 7. Protrusion 8 First Nut Component 9 Second Nut Component A. Vertical axis AB1 First Compensation Movement AB2 Second Compensation Movement AP1 Starting position AP2 Compensation Position B and C axes (horizontal axis) G1 First thread engagement G2 Second Thread Engagement G3 Third thread engagement H1 First cavity H2 Second Cavity KF Force Flow KF1 Modified Force Flow Arrow from PF1 to PF S height clearance S1 Synchronization Height ZS tensile stress ΔG Thread offset

Claims

1. A device (1) for compensating for tolerances between two components (2, 3) to be connected, having - Hollow cylindrical basic element (4). - A hollow cylindrical compensating element (5), which forms a first thread engagement (G1) with the basic element (4) and can be moved from the starting position (AP1) to the compensating position (AP2) by twisting relative to the basic element (4), and - A connecting element (6) extending through the first cavity (H1) of the device (1) for connecting the two components (2, 3) together. The connecting element (6) forms a second thread engagement (G2) with one of the components (2, 3) and / or the first nut element (8), and The second nut element (9) is arranged in the groove (52) of the compensating element (5) such that when the connecting element (6) is screwed into the device (1), the second nut element (9) and the connecting element (6) form a third thread engagement (G3). Thus, the torque can be applied to the second nut element (9) through the third thread engagement (G3), such that as the connecting element (6) is further screwed into one of the members (2, 3) and / or the first nut element (8), the second nut element (9) can move at least partially independently of the compensating element (5), opposite to the insertion direction of the connecting element (6), and axially relative to the compensating element (5) toward the flange surface of the compensating element (5), and Thus, in the assembled state and the compensated position (AP2), the second nut element (9) is supported on one of the components (2, 3).

2. The device (1) according to claim 1, wherein the second nut element (9) is arranged in the groove (52) such that at least one synchronization height (S1) is lower than the flange surface of the compensation element (5).

3. The device (1) according to claim 1 or 2, wherein the synchronization height (S1) corresponds to at least one pitch of the first thread engagement (G1) between the compensation element (5) and the basic element (4).

4. The device (1) according to claim 1 or 2, wherein the second nut element (9) is arranged in the compensation element (5) in a form-fitting manner in the starting position (AP1).

5. The device (1) according to claim 1 or 2, wherein the compensation element (5) includes a receiving section (522), and the second nut element (9) is arranged in the receiving section in a form-fitting manner in the starting position (AP1).

6. The apparatus (1) according to claim 5, wherein the receiving section (522) includes a plurality of longitudinal tabs (524).

7. The device (1) according to claim 5, wherein the receiving section (522) has a hexagonal profile (525).

8. The device (1) according to claim 6, wherein the longitudinal tab (524) extends along the longitudinal axis (A) in the receiving section (522) and has a decreasing height in the direction toward the flange surface.

9. The device (1) according to claim 6, wherein the longitudinal tab (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 frictional fit.

10. The device (1) according to claim 6, wherein the longitudinal tab (524) has a shape and / or size such that the second nut element (9) is arranged axially along the longitudinal axis (A) of the device (1) in the receiving section (522) at least in frictional engagement.

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