Threaded connection assembly

Abstract

The invention relates to a threaded connection assembly which is penetrated by a central longitudinal axis (Z) and comprises a housing (4) which comprises a first housing part (100) with a first thread (102) comprising a first thread form (104) and a second housing part (200) with a second thread (202) comprising a second thread form (204), wherein the housing parts (100, 200) are screwed to each other with the threads (102, 202) in the case of a threaded connection (6), wherein the first thread (102) is an external thread and the second thread (202) is an internal thread, wherein the first housing part (100) is a cover and the second housing part (200) is a receptacle, wherein the second housing part (200) has a recess (240) on the side opposite the first housing part (100) which is designed for the insertion of a damper or a rod thereof.

Description

Technical Field

[0001] This invention relates to a component. Background Technology

[0002] From practice, we learned about components such as topmounts and shock absorber cylinders. ) or powertrain support components (Aggregatlager) such as engine support components.

[0003] In the known assembly of the first embodiment, an insert serving as a support and fixing mechanism is screwed into the upper suspension housing on the vehicle side from below or from the road side, in relation to the installation position where the bump buffer is provided, i.e., it closes the cavity where the elastic support is located from below. The screwed-in member forms a partition wall between the elastic support and the bump buffer and has a centrally located through-hole through which the shock absorber rod can pass. The shock absorber rod is threadedly connected to the core of the elastic support. During inward retraction, the bump buffer is compressed, thereby the partition wall is subjected to upward force and simultaneously elastically deformed. During outward retraction, the shock absorber rod pulls the core of the elastic support, thereby the elastic support exerts a downward force on the partition wall. The reverse load is transmitted to the upper suspension housing through the threaded connection of the support and fixing mechanism. The thread is thus subjected to the opposite vibration force, thereby potentially causing it to loosen. Furthermore, in many applications, the upward force of the bump buffer is significantly greater than the upward force of the support.

[0004] In the known components of the second embodiment, a locking hook can be provided on the support fixing mechanism to prevent loosening after tightening. However, this solution generally prevents loosening. Non-destructive disassembly is not possible. Furthermore, if a defect occurs in the elastic support member in a structure with a locking hook, the individual part cannot be replaced. Therefore, the entire component or assembly must be replaced.

[0005] In another known component of the third embodiment, the resilient support is not secured by a support fixing mechanism inserted from below, but rather by a plastic support cover inserted from above, which is welded inseparably to the upper suspension housing. If the resilient support is fixed to the cover from above, the cover only bears upstream pressure, but not downward tension. Because the tensile-compressive load acting on the resilient support is generally much smaller than the compressive load caused by the bumper, the cover positioned above the resilient support bears a smaller upward load compared to the partition wall located between the bumper and the resilient support. However, the force transmitted by welding may sometimes be significantly less than the peak load occurring under operating load. Furthermore, there may be significant fluctuations in the maximum transmittable load between components. Summary of the Invention

[0006] The object of the present invention is therefore to provide a component that, in particular, overcomes the disadvantages of the prior art, namely, that the component has a structure that is improved with respect to load conditions.

[0007] According to the invention, an assembly is provided which is traversed by a central longitudinal axis and includes a housing comprising a first housing portion having a first thread including a first thread profile and a second housing portion having a second thread including a second thread profile, wherein the housing portions are screwed together by the threads to form a threaded connection, wherein the first thread is an external thread and the second thread is an internal thread, wherein the first housing portion is a cover and the second housing portion is a receiving portion, wherein the second housing portion has a notch on the side opposite to the first housing portion designed for insertion of a shock absorber or its rod.

[0008] The central longitudinal axis extends parallel to the screwing direction (both the screwing-in and screwing-out directions). Note that the "screwing-in" and "screwing-out" directions may relate to the first housing portion.

[0009] For example, the first housing portion can be screwed into the second housing portion in the screw-in direction. Since the first housing portion, acting as a cover, is screwed onto the receiving portion from the side opposite to the damper or its rod, no tensile force is applied to the cover during operation. The cover can, for example, cover a receiving space, and the receiving portion can, for example, form this receiving space. A notch in the second housing portion can open a path to the receiving space from the side opposite to the first housing portion. The notch can be coaxial with the hole and / or central longitudinal axis of the insert. The damper or its rod can extend through the notch into the receiving space to be secured there to the insert. An elastic support member, which may include the insert, can be placed in the receiving space.

[0010] According to the invention, the first housing portion is protected from tensile forces that can be introduced into the assembly via a damper or rod. No alternating loads occur; instead, the first housing portion is subjected to forces opposite to the screwing direction. In this tightening, it is not the fixed partition wall that is being referred to, but rather the fixed first housing portion that can be used as a cover and / or a accommodating part. Therefore, the first housing portion can be tightened from above. There, the maximum load is small. Tightening does not withstand dynamic alternating loads, but primarily the loads within the pressure expansion region.

[0011] Because the first housing portion is designed as a cover and the second housing portion is designed as a receiving portion, an assembly is provided in which the force oriented, for example, in the rotational direction with respect to the first housing portion, on the first housing portion and / or on the elastic support is small, thereby the expected elastic deformation of at least one of the housing portions due to frictional loads is also small. Only in a few shaft concepts does the damper twist relative to its fixed structure, which may be high in the installed state. Here, the torque transmitted to the fixed structure or connecting structure such as the elastic support is only small because the damper rod is generally free to rotate within the damper in principle. Torque up to the magnitude of the loosening torque occurs only due to friction within the damper and is transmitted to the elastic support. Therefore, in this invention, the deformation is small while torsional loads are transmitted, for example, to the first housing portion and may cause undesirable loosening of the tightening.

[0012] According to an improved embodiment of the component of the invention, at least one of the thread profiles may be designed to be asymmetrical and at least one of the thread profiles extends along a first imaginary circle having a first radius and along a second imaginary circle having a second radius, which is different from the corresponding thread root.

[0013] In a surprisingly simple way, the problems of the prior art can also be overcome by the asymmetry of at least one of the proposed threads. The asymmetry can be a mirror asymmetry about the transverse plane (the normal vector of the transverse plane can lie on the central longitudinal axis). With this asymmetry, the corresponding thread can be subjected to force only in one direction along the central longitudinal axis. The structural space for each of the other threads resulting from the asymmetry leads to a large thread clearance, where this structural space can be utilized as optimally as possible (asymmetry of the thread flanks). It is also shown that the tightening can transmit a greater force than tightening using a symmetrical standard thread.

[0014] Instead of welding as has been the case to date, the two housing parts can be secured by screwing to enable component maintenance. Furthermore, the asymmetry in at least one thread profile results in one housing part, preferably the first housing part, bending under forces oriented in the threaded region along the central longitudinal axis, preferably opposite to the screwing direction, without reducing the thread clamping force; instead, the threads are strongly clamped together.

[0015] According to a conceivable improvement of the component of the invention, the second housing portion can be designed and / or have a fixing mechanism for attachment to a fixed structure such as a vehicle body. The second housing portion can thus be fixed to another structure to secure the component. The first housing portion can therefore be finely designed and fixed only to the second housing portion. It is conceivable that the first housing portion does not include or is not formed on the other fixed structure for component attachment. The fixing mechanism can, for example, be a hole through which a screw can pass.

[0016] According to a conceivable improvement of the component of the invention, the thread flank of the first thread facing the outward direction abuts against the thread flank of the second thread facing the inward direction. This allows an axial thread clearance to be formed on opposite sides of the thread lines in the direction of the central longitudinal axis. This axial clearance allows the component to be formed more elastically overall. That is, if the first housing portion is subjected to a force oriented in the inward direction, the axial clearance can be closed, or perhaps overcome the force of the elastic support member.

[0017] According to a conceivable improvement of the component of the invention, the second housing portion may have a bump buffer receiving portion, for example, for a bump buffer. It is conceivable that the component includes a bump buffer received portion of the second housing portion. The first housing portion is thus able to remain free from the forces input into the component through the bump buffer. The bump buffer receiving portion may be formed on the side of the second housing portion having a notch.

[0018] In a conceivable improvement to the component according to the invention, the first housing portion can be an open (with a central opening or notch) or closed (without a central opening or notch) cover and / or screwed onto the second housing portion from the side opposite to the bump damper receiving portion (e.g., in the screw-in direction). Thus, the first housing portion is unaffected by the bump damper force. No alternating load occurs; instead, the first housing portion is subjected to forces opposite to the screw-in direction, particularly in the corresponding design and / or arrangement. The screwing does not bear dynamic alternating loads, but primarily bears loads within the pressure-expansion region. This unilateral load can also be designed asymmetrically on the thread flanks and optimized for upward (e.g., in the screw-out direction) cap loads to thus reduce dangerous tensile stress concentration at the thread root, thereby transmitting greater forces than with symmetrical threads. This is particularly important when at least one of the housing portions is made of plastic, as the inertia of plastic thread flanks is not as high as that of metals due to the relatively lower strength of plastic. Due to the viscoelastic properties of plastic, deposition relaxation occurs over time in the case of plastic. This phenomenon is particularly pronounced at higher tensile stresses. This invention is therefore advantageous for minimizing tensile stress concentration due to asymmetry, so as to minimize flow or deposition and / or relaxation on the threaded sides when using plastics. The open cap, after tightening, allows access to the receiving space for, for example, securing the damper rod to the insert there. The closed cap reliably prevents dirt from entering the receiving space.

[0019] According to an improved embodiment of the component of the invention, the second radius can be 1.1 to 4 times, preferably 1.5 to 3 times, and more preferably 2 times, the length of the first radius. The associated thread profile thus extends along at least two different radii. This proportion proves advantageous with respect to force input and for creating asymmetry at the thread root. It is conceivable that the two housing portions abut against each other on the thread flanks arranged next to the larger radius and / or on the surfaces of the larger radius. Here, the two radii at the thread root are advantageously designed such that the radius of tensile stress caused by helical preload is larger than the radius of compressive stress caused by helical preload at the thread root. That is, if the component is subjected to pressure, for example, due to a force input in the helical direction by a member connected to the first housing portion, such as a damper, tensile loads may occur on the corresponding threads. There, the invention advantageously proposes arranging a larger diameter, preferably at least on the first housing portion.

[0020] According to a conceivable improvement of the component of the invention, at least one of the thread profiles may have at least one straight thread flank adjacent to at least one of the circles. It is conceivable that two radii within a thread root are connected by a straight line or curve. This allows for a very advantageous load distribution. It is conceivable that the straight thread flank is the thread flank of another thread that is thereby in contact with it.

[0021] According to a conceivable improvement of the component of the invention, a larger radius can be arranged downstream of the smaller radius in the threading direction, preferably in the first housing portion, within the thread root. It is conceivable that the larger radius can then be arranged downstream of the smaller radius in the unthreading direction in the respective other thread root. Thus, the housing portions can abut against each other in the larger radius region, thereby forming a large contact surface between the two threads when force is applied in the unthreading direction. Within the larger radius region, it can also withstand large forces, particularly those caused by the asymmetry of the threads.

[0022] According to an improvement of the component of the invention, the thread profile can have a mirror-image orientation with respect to the transverse plane. Two such thread profiles can therefore be identical but extend in opposite directions. For example, the larger radius is arranged in the thread profile such that the tensile stress caused by helical preload is located in the larger radius, while the compressive stress caused by thread flank bending due to helical preload is located in the smaller radius. This advantageously creates a tightening mechanism that allows for higher thread loads than symmetrical threads can achieve.

[0023] In a conceivable improvement to the component according to the invention, at least one of the threads can be a round thread or a sawtooth thread. A round thread avoids sharp edges; here, the round thread should not be confused with the round thread according to DIN 405. A sawtooth thread is particularly suitable in the present case because the component can be designed such that the sawtooth thread encounters axial loads on one side or substantially on one side. This allows for a tightening force capable of withstanding large forces. The tightening can be optimized for loads in the pressure expansion region. The thread flanks can therefore be designed asymmetrically. This is particularly suitable for inventions where the first housing portion is designed as a cover and tightens with the second housing portion in the screw-in direction. That is, the cover can then withstand small loads.

[0024] According to a conceivable improvement of the component of the invention, at least one of the thread profiles may have an overlap with the first circle along an arc ranging from 10° to 135°, preferably from 45° to 100°, and more preferably 90°, and / or at least one of the thread profiles may have an overlap with the second circle along an arc ranging from 10° to 90°, preferably from 20° to 60°, and more preferably 30°. This allows for the formation of correspondingly realistic thread profiles that follow the corresponding circles within a large or small angular range. Furthermore, sharp transitions that could lead to stress concentration are avoided.

[0025] According to an improvement of the component of the invention, the first derivative (Ableitung) of at least one of the thread profiles, preferably two thread profiles, may have a continuous orientation. The term "continuous orientation" is understood mathematically. In cross-section, the corresponding thread profile or its orientation can be considered a mathematical diagram. It can extend along the X-axis of the XY coordinate system. Thus, the corresponding thread profile is advantageously distinguished from many other thread profiles whose orientation has an angular transition. This angularity can be considered abrupt change in the first mathematical derivative. However, sharp edges causing stress concentration or notching effects do not occur with the thread profiles of the invention.

[0026] According to a conceivable improvement of the component of the invention, at least one of the threads has two adjacent thread flanks that enclose at an angle between 10° and 90°, preferably between 30° and 70°. The thread flank angle can be measured between the opposing thread flanks of two adjacent thread lines.

[0027] According to a conceivable improvement of the component of the invention, at least one of the thread flanks may be enveloped by a straight line or tangent on the thread crest surface to form an angle or second angle within the range of 90° to 140°, preferably within the range of 100° to 130°, and more preferably 105°, and / or an angle or third angle within the range of 90° to 140°, preferably within the range of 100° to 130°, and more preferably 105°. This value has proven advantageous for long-term durability. The direction of the straight line may be parallel to the central longitudinal axis, and the tangent may be longitudinally centered on the crest surface and tangent to the thread profile.

[0028] According to an improved embodiment of the component of the invention, it may include a receiving space in which an elastic support member is disposed, wherein the elastic support member is pre-tightened and / or supported there by a first housing portion and / or a second housing portion, wherein the elastic support member preferably includes an insert. A shock absorber can be connected to the component, for example, by means of the elastic support member. The elastic support member may be an elastomeric support. The insert may be made of plastic or metal and / or include a hole to which the shock absorber or its shock absorber rod can be connected. The hole in the insert may be coaxial with a central longitudinal axis. The receiving space may be defined by the first and / or second housing portions. The elastic support member may include an elastomeric body that directly supports the insert. Alternatively, the elastic support member may include an elastomeric body and a retainer ring, wherein the retainer ring supports the insert and the elastomeric body directly supports the retainer ring. With the aid of the retainer ring, which may be made of metal or plastic, especially thermoplastic, the force input through the insert can be applied to the elastomeric body over a large area. The support may be pre-tightened axially by tightening two threads. The support may rest against the two housing portions. The radial preload of the elastic support can already exist before the two housing parts are screwed together. For this purpose, the elastic support can be pressed into the first housing part to encounter the radial preload there. Axial preload can be induced by screwing the two housing parts together.

[0029] According to an improved embodiment of the component of the invention, the resilient support member may have an oriented structure that cooperates with a mating structure in the first and / or second housing portion to prevent rotation about a central longitudinal axis of the first and / or second housing portion. The oriented structure or mating structure may be, for example, a groove or tenon, and the other of the oriented structure and mating structure may be designed as a corresponding mating element. It is conceivable that the resilient support member is first connected to the first housing portion, preferably pressed in there, where it is also feasible without an oriented structure. This allows the support to be pre-installed in the first housing portion before the two housing portions are tightened. This pre-installation also allows for radial alignment of the support in the first housing portion before the two housing portions are tightened. A rotor-like orientation of the resilient support member may also be provided so that the resilient support member is aligned and in place after the two housing portions have been tightened.

[0030] According to an improved embodiment of the component of the invention, a first housing portion may include at least one first locking member, and a second housing portion may include at least one second locking member, which form a lock that can be separated without damage by rotating the housing portions relative to each other. Instead of the lock hooks of the present invention, which cannot be separated without damage, threaded fastening is proposed, which, while preventing separation by working loads, allows for tightening as needed. One of the locking members may be disposed on one end of one housing portion, preferably a cylindrical portion, and the corresponding locking member may be disposed on the bottom of the other housing portion, preferably on an annular portion. The locking members can engage with each other in a form-fit and / or force-fit manner. The form-fit can be generated by elasticity present in at least one of the housing portions and can also be separated.

[0031] According to a conceivable improvement of the component of the invention, the at least first locking member and / or at least the second locking member comprises an asymmetrical bevel structure having an inward bevel and an outward bevel, wherein the inward bevel can clamp the transverse plane at a smaller angle than the outward bevel. The different angles result in asymmetry. The gentler inward bevel (smaller clamping angle) makes screwing in much easier, but makes screwing out difficult using the steeper outward bevel (larger clamping angle). This ensures sufficiently high product safety and prevents loosening of the locking mechanism.

[0032] In a contemplated improvement to the component according to the invention, the at least first locking member and / or at least the second locking member may comprise a symmetrical bevel structure having an inward bevel and an outward bevel, wherein the inward bevel and the transverse plane enclose at the same angle as the outward bevel. This embodiment may result in the same inward and outward forces.

[0033] According to a conceivable improvement of the component of the invention, the at least first locking member and / or at least the second locking member may comprise a wavy, inclined structure. The wavy structure may be asymmetrical (with wave sides of varying steepness) or symmetrical.

[0034] According to a conceivable improvement of the component of the invention, at least one of the housing parts can be made of plastic or metal. That is, the invention is not limited to plastic. Metal housing parts or housing parts made of metal-plastic composites are also conceivable. Thus, the structural advantages of the invention are also realized when the housing parts are made of other materials, so that the advantages of each material can also be benefited. Preferably, at least one of the housing parts can be a cast (injection) housing part, which is manufactured, for example, by aluminum die casting or plastic injection molding. Transmitting very high tightening forces into plastic caps has been problematic to date because the screwdriver insertion point of the cap may be damaged during repeated tightening and loosening. Therefore, small tightening forces are advantageous in principle, which has not been possible to achieve simultaneously with safe operation until now. Caps known to date are subjected to large forces during operation. But with the invention, small tightening forces can now be used because the first housing part does not encounter large forces during operation. Therefore, plastic is particularly suitable as well.

[0035] According to a conceivable improvement of the component of the invention, the number of thread turns of at least one of the two threads can be greater than 3, preferably greater than 5, and more preferably greater than 7. It is conceivable that the thread height of at least one of the two threads, i.e., the corresponding thread length along the central longitudinal axis, corresponds to or is greater than the height of the elastic support. This allows for the maximum possible distribution of the force input via the support. One thread turn extends through a 360° angular range about the central longitudinal axis. When the first housing portion is advantageously screwed inward within the second housing portion, the number of thread turns and thus the thread length carried can be effectively increased. This cannot be easily achieved with the commonly used overlapping of internally threaded caps, as this design requires rotationally symmetric supports to accommodate the supports, which should not engage with the outer rib in the threaded area on the outer periphery. This boundary condition is a common and obvious structural constraint that does not even occur in the case of the internal screwing in of the first housing portion of the invention.

[0036] Another advantage arises from the combination of the screwing in of the first housing and the corresponding number of thread turns. Specifically, by screwing in, the first thread can penetrate deeply into the second housing section and thus transmit the load through multiple thread turns. Consequently, the cylindrical portion belonging to the first housing section can be long, allowing for the pre-installation of the support member there. This also allows for radial pre-tightening of the support member in the first housing section before tightening the housing section.

[0037] According to an improved embodiment of the component of the invention, the first housing portion may include a cylindrical portion that at least partially surrounds the resilient support and / or carries a first thread, and / or includes a flange portion that at least partially overlaps the resilient support radially and / or preloads the resilient support longitudinally. Thus, the resilient support can be pre-installed into the first housing portion before being screwed onto the second housing portion. Because the first housing portion can be smaller than the second housing portion, the mounting equipment, particularly the component supply mechanism and component clamping mechanism, can be designed to be small and therefore low-cost. Preloading can exist in the installed state. The cylindrical portion may be a hollow cylindrical portion. The cylindrical portion may form part of a receiving space for support. For example, as a pre-installation, the support can be pressed into the cylindrical portion.

[0038] According to a conceivable improvement of the component of the invention, the length of the longitudinal cylindrical portion is 1.2 to 0.6 times, preferably 1.0 to 0.8 times, the length of the longitudinal elastic support member in the stress-free pre-installed state or installed state. Thus, the cylindrical portion can be deeply inserted into the second housing portion and / or has a large number of threads.

[0039] According to an improvement of the component of the invention, the first thread may at least partially overlap an elastic support in the circumferential direction. This support may include an elastomer. Such an elastomer is primarily incompressible, so that a portion of the elastomer may be radially displaced when the insert is axially deflected. If this is done, the thread flanks are further compressed not only axially but also radially. Therefore, static friction increases, and disengagement under axial load becomes more difficult.

[0040] According to a conceivable improvement of the component of the invention, the component may be an upper mount, a shock absorber mounting mechanism, a powertrain support, or an engine support. The invention is advantageously applicable in many technical contexts.

[0041] In a contemplated improvement to the component according to the invention, the support member may include an outer sleeve that surrounds the elastomer on its axial side. The outer sleeve may be made of plastic or metal. The elastomer may be vulcanized onto the outer sleeve. If the outer sleeve is made of metal, the support can thus be radially aligned before being pressed into the preferred first housing portion to compensate for shrinkage stress from the elastomer caused by processing. If the outer sleeve is plastic, it is easy to provide an orientation structure within the outer sleeve, but the support member cannot then be pre-aligned. Therefore, alignment occurs when the support member is pressed into the first housing portion along with the plastic outer sleeve. The support member can abut against the first housing portion and / or the second housing portion via the outer sleeve.

[0042] Another method for installing the components of this invention can be conceived, comprising the following steps:

[0043] - Provides a first housing portion according to this document,

[0044] - Provide a second housing portion according to this document,

[0045] - The elastic support member according to this article is connected to the first housing portion, preferably by pressing the elastic support member into the first housing portion.

[0046] - The first housing part is screwed into the second housing part in the screwing direction to form a threaded connection.

[0047] Similarly, the method described above also possesses the advantages already presented regarding the components. The method steps can be performed in the described order. Attached Figure Description

[0048] Other features, details, and advantages of the invention will become apparent from the wording of the claims and from the following description of the embodiments in conjunction with the figures, wherein:

[0049] Figure 1 A cross-sectional view of the components of the present invention is shown;

[0050] Figure 2 Showing according to Figure 1 Detailed diagrams of the components;

[0051] Figure 3 A cross-sectional view of a portion of the first housing section is shown;

[0052] Figure 4 A cross-sectional view of a portion of the second housing section is shown;

[0053] Figure 5 Showing according to Figure 2 Detailed diagrams of the components;

[0054] Figure 6 Showing according to Figure 3 Detailed images of some parts;

[0055] Figure 7 A cross-sectional view showing a first embodiment of the locking element;

[0056] Figure 8 A cross-sectional view showing a second embodiment of the locking member;

[0057] Figure 9 A cross-sectional view showing a third embodiment of the locking element;

[0058] Figure 10 A cross-sectional view showing a fourth embodiment of the locking element;

[0059] Figure 11 Show along according to Figure 1 The cross-sectional view of line AA; and

[0060] Figure 12 Showing according to Figure 11 A detailed view of a part of the scene.

[0061] List of reference numerals

[0062] 2-Component 212 Second Tooth Crest

[0063] 4. Housing 214. Second locking element

[0064] 6-threaded connection 216 second screw-in bevel

[0065] 8. Accommodation space 218. Second spiral ramp

[0066] 10 elastic support members with 240 notches

[0067] 12 inserts 242 cylindrical parts

[0068] 13 support ring 244 flange portion

[0069] 14 holes, 246 annular section

[0070] 16 Elastomer 248 End Side

[0071] 18mm jacket, 250mm second shoulder protrusion

[0072] 52 Tenon 252 Bumper Buffer Housing

[0073] 100 First shell section 254 ribs

[0074] 102 First thread 256 Connection point

[0075] 104 First thread profile A, screw-out direction

[0076] 106 First thread root B1 First arc

[0077] 108 thread flank B2 second arc

[0078] 110 thread tooth flank E screw-in direction

[0079] 112 First tooth crest surface G1 straight line

[0080] 114 First locking component K1 First circle

[0081] 116 First screw-in inclined plane K2 Second circle

[0082] 118 First spiral ramp L longitudinal direction

[0083] 140 notch R radial

[0084] 142 cylindrical part R1 first radius

[0085] 144 flange portion R2 second radius

[0086] 146 Annular part S1 Axial thread clearance

[0087] 148 end side S2 radial thread clearance

[0088] 150 First shoulder U-shaped direction

[0089] 152 slots overlapping

[0090] 200 Second housing part Q transverse plane

[0091] 202 Second Thread W1 First Angle

[0092] 204 Second Thread Profile W2 Second Angle

[0093] 206 Second thread root W3 Third angle

[0094] 208 thread tooth flank Z-center longitudinal axis

[0095] 210 thread flank Detailed Implementation

[0096] In the figures, identical or corresponding components are labeled with the same reference numerals and therefore are not redescribed unless inappropriate. Features already described are not redescribed to avoid repetition and are applicable to all components with the same or corresponding reference numerals, unless explicitly excluded. The disclosure contained throughout the specification is applicable to the same parts with the same reference numerals or the same component names. Locational descriptions chosen in the specification, such as above, below, side, etc., also relate to the figures just described and shown and are applied to new locations in terms of meaning when the location changes. Furthermore, individual features or combinations of features from the different embodiments shown and described can also be independent, inventive, or solutions according to the invention.

[0097] Figure 1 The component 2 according to the invention is shown, which is traversed by a central longitudinal axis Z. A radial direction R extends from the central longitudinal axis Z, a circumferential direction U extends around the central longitudinal axis Z, and a transverse plane Q is arranged such that its normal vector lies on the central longitudinal axis Z. The longitudinal direction L, which can also be referred to as the axial direction, runs parallel to the central longitudinal axis Z.

[0098] Component 2 is designed to be top-mounted, but is not limited to this, and the component includes a housing 4, which includes a first housing portion 100 and a second housing portion 200. The first housing portion 100 is designed as a cover, and the second housing portion 200 is designed as a receiving portion. The housing portions 100 and 200 are connected by a threaded connection 6, wherein the threaded connection 6 is secured by locking members 114 and 214. Figure 1In the installation position shown, housing parts 100 and 200 define the receiving space 8.

[0099] An elastic support 10 is housed in the receiving space 8, which carries an insert 12. The elastic support 10 has an outer sleeve 18 on the outer periphery of an elastic body 16. The support 10 abuts against the first housing portion 100 and the second housing portion 200 via the outer sleeve 18. The elastic support 10 also has an elastic body 16 and a support ring 13 carried by the elastic body 16. The support ring 13 carries the insert 12, which can be designed as a disc. A damper or damper rod that can pass through a notch 240 in the second housing portion 200 can be connected to a hole 14 in the insert 12. The first housing portion 100 has a notch 140 that opens a path to the receiving space 8 from the side opposite to the second housing portion 200. The notch 140 is coaxial with respect to the hole 14 in the insert 12 and the central longitudinal axis Z. The second housing portion 200 has a notch 240 that opens or closes a path to the receiving space 8 from the side opposite to the first housing portion 100. The notch 240 is coaxially oriented with respect to the hole 14 of the insert 12 and the central longitudinal axis Z. The second housing portion 200 also has a bumper receiving portion 252 for a bumper, not shown but which may in principle be included in the assembly 2. The bumper receiving portion 252 is located on the side opposite to the first housing portion 100. The bumper receiving portion 252 is coaxially oriented with respect to the central longitudinal axis Z. The second housing portion 200 may, for example, be connected to the vehicle body.

[0100] The first housing portion 100 includes a first thread 102 having a first thread profile 104, and the second housing portion 200 includes a second thread 202 having a second thread profile 204. To form a threaded connection 6, threads 102 and 202 are screwed together in the screw-in direction E. The screw-out direction A is opposite in direction. The screw-in direction E and the screw-out direction A extend parallel to the central longitudinal axis Z. Therefore, the first housing portion 100 can be seen as a cover screwed in from above, i.e., from the side opposite to the bump buffer housing 252 and / or the shock absorber.

[0101] A first thread 102 is arranged as an external thread on the outer peripheral side of the cylindrical portion 142 of the first housing portion 100. The cylindrical portion 142 surrounds the elastic support member 10 on its outer peripheral side. Furthermore, the first housing portion 100 has a flange portion 144 arranged on its inner peripheral side. The flange portion 144 overlaps the elastic support member 10 in the radial direction R and preloads the elastic support member 10 in the longitudinal direction L. For this purpose, the elastic support member 10 is supported on the flange portion 144 of the first housing portion 100 on one hand, and on the flange portion 244 of the second housing portion 200 on the other hand. Between the flanges 144 and 244, the elastic support member 10 is axially preloaded.

[0102] It can be seen that the first thread 102 and the second thread 202 at least partially cover the elastic support 10 on the circumferential side. The second thread 202 is arranged as an internal thread on the inner circumferential side of the cylindrical portion 242 of the second housing portion 200. The second cylindrical portion 242 surrounds the first cylindrical portion 142 on the outer circumferential side. The number of turns of the two threads 102 and 202 is equal to 3, but it can be more. On the outer circumferential side, a plurality of ribs 254 are connected to the cylindrical portion 242 for reinforcement, wherein the ribs 254 have connection points 256 or external connection points, which indicate the highest connection point of each rib 254. An overlap is formed between the connection point 256 and the end side 148 of the first housing portion 100. In this region, the rib 254 and the first columnar portion 142 overlap.

[0103] Figure 3 A portion of the first housing portion 100 within the region of thread 102 is shown. It can be seen that thread 102 has multiple thread roots 106. Furthermore, the first thread 102 has thread flanks 108 facing the insertion direction E and thread flanks 110 facing the unscrewing direction A. Thread 102 also has a crest surface 112.

[0104] Figure 4 A portion of the second housing portion 200 within the region of thread 202 is shown. It appears that the second thread 202 has multiple thread roots 206. The second thread 202 also has thread flanks 208 facing the insertion direction E and thread flanks 210 facing the exit direction A. The second thread 202 also has a crest surface 212. Also shown here is the exemplary peripheral rib 254 and its connection point 256 on the second cylindrical portion 242.

[0105] exist Figure 5 The threaded connection 6 can be seen in more detail below. Threads 102 and 202 are designed as sawtooth threads, wherein thread profiles 104 and 204 have mirror-image orientations about the transverse plane Q. Two such thread profiles 104 and 204 can therefore be identical, but they extend in opposite directions along the central longitudinal axis Z. The thread flank 108 of the first thread 102 facing the outward direction A abuts against the thread flank 210 of the second thread 202 facing the inward direction E. Thus, an axial thread clearance S1 can be formed on opposite sides of the thread line in the direction of the central longitudinal axis Z. A radial thread clearance S2 can also be formed between threads 102 and 202.

[0106] The first housing portion 100 has a first locking member 114 in the form of a sloped or wave-shaped structure. It can be arranged on the annular portion 146 protruding from the cylindrical portion 142 and extending towards the end side 248 of the second cylindrical portion 242 of the second housing portion 200. Alternatively or additionally, the first locking member 114 in the form of a sloped or wave-shaped structure can be arranged on the end side 148 of the first cylindrical portion 142 and extending towards the second annular portion 246 of the second housing portion 200. By rotating the housing portions 100 and 200 relative to each other, the first locking member 114 is locked in the installed position with the second locking member 214, which serves as a locking mating element, to form a lock that can be separated without damage.

[0107] The second housing portion 200 has a second locking member 214 in the form of a sloped or wave-shaped structure. It can be arranged at the annular portion 246 protruding from the second columnar portion 242 and extend towards the first end side 148 of the first columnar portion 142 of the first housing portion 100. Alternatively or additionally, a second locking member 214 in the form of a sloped or wave-shaped structure can be provided at the second end side 248 of the second columnar portion 242 and extend towards the first annular portion 146 of the first housing portion 100. The locking members 114 and 214 are interlocked in a form-fitting and / or force-transmitting manner. The design of the locking members 114 and 214 is... Figures 7 to 10 It is shown in the middle.

[0108] The housing portions 100 and 200 have shoulders 150 and 250 in the receiving space 8 for the outer sleeve 18. A first shoulder 150 is disposed on the first housing portion 100 and extends in a circular shape around the central longitudinal axis Z. The first shoulder 150 provides axial constraint for the outer sleeve 18 and radial constraint for the elastomer 16. A second shoulder 250 is disposed on the second housing portion 200 and extends in a circular shape around the central longitudinal axis Z. The second shoulder 250 appears to provide axial constraint for the outer sleeve 18 and radial constraint for the elastomer 16.

[0109] Figure 6The first thread profile 104 is shown based on the first thread root 106, since the mirror image appears to also apply to the second thread profile 204. The thread profile 104 is designed to be asymmetrical about the transverse plane Q. In the thread root 106, the thread profile 104 extends along a first imaginary circle K1 having a first radius R1 and a second imaginary circle K2 having a different second radius R2. The thread profile 104 overlaps with the first circle K1 at 95° along the first arc B1 and with the second circle K2 at 30° along the second arc B2. The first radius R1 is smaller than the second radius R2. The two radii R1 and R2 in the thread root 106 can be designed such that the radius at which a tensile load occurs when the thread is tightened or when a force is applied at the elastic support 10 in the direction of screwing out is larger than the radius at the thread root 106 that causes compressive stress under the same load. It can also be seen that within the thread root 106, the larger radius, i.e., the second radius R2, is arranged downstream of the smaller radius, i.e., the first radius R1, in the screw-in direction. The thread root 106 is rounded at its corners by means of radii R1 and R2. The thread root 106 does not have angular or sharp transitions; therefore, if one considers the thread profile 104 as a graph in a mathematical sense, the first derivative of the thread profile 104 has a continuous direction without abrupt changes. The thread flank 110 is adjacent to the first circle K1 as a straight thread flank. The thread flank 110 thus transitions straight to the first circle K1. The thread flank 108 is adjacent to the second circle K2 as a straight thread flank. The thread flank 108 thus transitions straight to the second circle K2.

[0110] Adjacent thread flanks 108 and 110 enclose each other at a first angle W1 equal to 30°. At thread profile 106, the straight line G1, which can also be a tangent, rests against the first thread tip surface 112. Thread flank 110 and the straight line G1 enclose each other at a second angle W2 of 100°. Thread flank 108 and the straight line G1 enclose each other at a third angle W3 of 110°.

[0111] Figures 7 to 10 Different locking mechanisms are shown, which can be combined with each other. Figure 7 As can be seen, the first locking member 114 has an asymmetrical inclined structure with a first screw-in inclined surface 116 and a first screw-out inclined surface 118 (mirror image asymmetry with respect to the longitudinal plane). The first screw-in inclined surface 116 encloses the transverse plane Q at an angle smaller than that of the first screw-out inclined surface 118. For Figures 7 to 10 This depicts the transverse plane Q. Similarly, it also forms... Figure 7 The second locking element 214. The second screw-in ramp 216 clamps the transverse plane Q at a smaller angle than the second screw-out ramp 218.

[0112] exist Figure 8In the middle, the spiral-in inclined planes 116 and 218 are mirror-symmetrical about the longitudinal plane and respectively enclose the transverse plane Q at the same angle as the corresponding spiral-out inclined planes 118 and 218.

[0113] Figure 9 It is shown that each locking element 114, 214 may also have multiple bevel structures, which may be mirror-symmetric and / or mirror-asymmetric.

[0114] Figure 10 Locking elements 114, 214 are shown with waveforms rather than bevels, wherein these waveforms may also be mirror-symmetric and / or mirror-asymmetric.

[0115] Figure 11 and Figure 12 Cross-sections of component 2 below insert 12 along the axial direction are shown. There, two housing portions 100 and 200 can be seen screwed together by threaded connection 6. The resilient support 10 has a tenon 52 on its outer sleeve 18 as a directional structure on its outer periphery, which inserts into a groove 152 on its inner periphery as a mating structure. The groove 152 is formed in the cylindrical portion 142 of housing portion 100.

[0116] This invention is not limited to one of the foregoing embodiments, but can be modified in many ways. All features and advantages derived from the specification and figures, including structural details, spatial arrangements, and method steps, may be important to the invention not only on their own but also in various combinations thereof.

[0117] All combinations of at least two features disclosed in the specification and / or figures fall within the scope of this invention.

[0118] To avoid duplication, features disclosed in relation to the apparatus should also be considered as disclosed in relation to the method and are therefore claimable. Similarly, features disclosed in relation to the method should also be considered as disclosed in relation to the apparatus and are therefore claimable.

Claims

1. A component having a threaded connection, the component being traversed by a central longitudinal axis (Z), the component comprising a housing (4), the housing comprising a first housing portion (100) and a second housing portion (200), the first housing portion (100) having a first thread (102) including a first thread profile (104), and the second housing portion (200) having a second thread (202) including a second thread profile (204), wherein, The first housing portion (100) and the second housing portion (200) are screwed together in the presence of a threaded connection (6) by the first thread (102) and the second thread (202), wherein the first thread (102) is an external thread and the second thread (202) is an internal thread, wherein the first housing portion (100) is a cover and the second housing portion (200) is a receiving portion, wherein the second housing portion (200) has a notch (240) on the side opposite to the first housing portion (100) designed for insertion of a shock absorber or the rod of the shock absorber, characterized in that the first housing portion (100) includes a cylindrical portion (142) surrounding an elastic support member (10), wherein the elastic support member (10) is pressed into the cylindrical portion (142).

2. The assembly with a threaded connection according to claim 1, characterized in that, At least one of the said thread profiles (104, 204) is designed to be asymmetrical, and at least one of the said thread profiles (104, 204) extends at the respective thread root (106, 206) along a first imaginary circle (K1) having a first radius (R1) and along a second imaginary circle (K2) having a second radius (R2) different from the first imaginary circle (K1).

3. The assembly with a threaded connection according to any one of the preceding claims, characterized in that, The second radius (R2) is 1.1 to 4 times the length of the first radius (R1).

4. The assembly with a threaded connection according to claim 1, characterized in that, The thread profiles (104, 204) have orientations that are mirror images of each other with respect to the transverse plane (Q).

5. The assembly with a threaded connection according to claim 1, characterized in that, The first derivative of at least one of the described thread profiles (104, 204) has a continuous trend.

6. The assembly with a threaded connection according to claim 1, characterized in that, The component includes a receiving space (8) in which an elastic support (10) is disposed, wherein the elastic support (10) is pre-tightened and / or supported there by the first housing portion (100) and / or the second housing portion (200).

7. The assembly with a threaded connection according to claim 1, characterized in that, The elastic support (10) has an orientation structure that engages with a mating structure in the first housing portion (100) and / or the second housing portion (200) to prevent rotation about the central longitudinal axis (A) relative to the first housing portion (100) and / or the second housing portion (200).

8. The assembly with a threaded connection according to claim 1, characterized in that, The first housing portion (100) includes at least one first locking member (114), and the second housing portion (200) includes at least one second locking member (214). The at least one first locking member (114) and the at least one second locking member (214) form a lock that can be separated without damage by the relative rotation of the first housing portion (100) and the second housing portion (200) to each other.

9. The assembly with a threaded connection according to claim 1, characterized in that, The first housing portion (100) includes a cylindrical portion (142) that carries the first thread (102), and / or includes a flange portion (144) that overlaps the elastic support member (10) in the radial direction (R) and / or preloads the elastic support member (10) in the longitudinal direction (L).

10. The assembly with a threaded connection according to claim 1, characterized in that, The first thread (102) at least partially covers the elastic support (10) on the circumferential side.

Images