Torque limiting nut

Abstract

A torque limiting nut is provided. The torque limiting nut includes a washer, a threaded component, and a tool interface. The threaded component has a plurality of stops, and the tool interface has a corresponding plurality of recesses and spring slots. The plurality of engaging members are sized and shaped to be configured in the plurality of stops and recesses. An elastic member in the spring slot provides a compressive force to install a pin in the corresponding stop, causing the threaded component and the tool interface to be frictionally coupled. When the torque required to rotate the tool interface exceeds a predetermined value, the pin moves against the spring and disengages from the stop, allowing the tool interface to rotate without rotating the threaded component.

Description

[0001] Cross-references to Related Patent Applications

[0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 915,122, filed on October 15, 2019, entitled Torque Limiting Nut, and the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] Nut assemblies are well-known tools that are commonly used to secure objects in place. Nut assemblies can be used in a variety of applications. In one application, a nut assembly can be used to secure a wheel end assembly to a spindle or vehicle axle.

[0004] Typically, a nut assembly consists of a nut and a washer that are operably coupled together. The nut of the nut assembly is typically a metal or composite component with a threaded hole. For example, the thread operably engages with a corresponding thread on a shaft. The nut assembly is screwed onto the shaft and tightened against the object to be secured (e.g., the wheel end).

[0005] While conceptually simple, tightening the nut assembly to secure the wheel end assembly to the axle is complex. The nut assembly needs to be tightened to a specific torque to provide sufficient seating force to secure the nut assembly in place and preload the bearing. However, in certain embodiments, excessive torque can damage components or make removal difficult. Many nut assemblies, including axle nut assemblies, require the use of complex procedures and torque wrenches to properly install the nut assembly against the object (wheel end).

[0006] Unfortunately, installers often lack the proper equipment or expertise to install the nut assembly on the shaft. For example, when no torque wrench is available, the preload on the bearing is often too high or too low. When preload is not applied correctly, the wheel-end bearings experience increased wear and reduced life.

[0007] Therefore, in this context, there is a need for a torque limiting axle nut that allows the correct torque to be applied to install the nut assembly on the axle without the use of a torque wrench or other procedures. Summary of the Invention

[0008] This summary is provided to introduce a selection of concepts in a simplified form that are further described in the detailed description below. This summary and the preceding background are not intended to identify key or essential aspects of the claimed subject matter. Furthermore, this summary is not intended to be an aid in determining the scope of the claimed subject matter.

[0009] In certain aspects of the technology, a torque limiting spindle nut is provided. The torque limiting spindle nut may include a threaded component that is releasably and rotatably coupled to a tool interface. The threaded component includes a cylindrical body having an internally threaded hole. The first end of the cylindrical body includes a flange portion having an outer diameter. The cylindrical body has a plurality of stops. The tool interface has an inner bore sized to accommodate the cylindrical body. The inner bore has a plurality of recesses corresponding to the plurality of stops. The inner bore includes an annular spring groove connected to the plurality of recesses. A plurality of coupling members, such as pins, fit into the stops and the recesses. An elastic member in the spring groove contacts the plurality of coupling members and provides a compressive force that tends to move the coupling members into the stops to frictionally couple the tool interface to the threaded component.

[0010] In certain embodiments, the resilient member is a spring, preferably a garter spring, wherein the compressive force provided by the resilient member is overcome at a predetermined torque such that the pin moves from the stop into the recess against the resilient member when the torque equals the torque limit.

[0011] In certain embodiments, the recess has a pin seat, a radially extending first wall extending from the pin seat to the inner bore, and a second wall angled with the radially extending wall, wherein the second wall engages the pin to engage the stop device when a rotational force tending to loosen the torque limiting shaft nut is applied to the tool interface.

[0012] The torque-limiting shaft nut also includes a washer coupled to the threaded component. In certain embodiments, the washer is coupled to the flange portion of the threaded component via a retainer arrangement. In certain aspects, the washer has an outer diameter sidewall and a base surface sized to accommodate the flange portion. In certain aspects, the retainer arrangement includes a groove in the outer diameter of the flange portion and an alignment groove in the inner surface of the outer diameter sidewall. A retainer ring fits within both the groove and the alignment groove to couple the washer to the threaded component.

[0013] In certain aspects, the torque limiting spindle nut includes an integrated ring coupled to an upper portion of the threaded component. In certain embodiments, an upper edge of the cylindrical body is curled or turned to form an integrated ring to couple the tool interface and the threaded component.

[0014] These and other aspects of the present systems and methods will be apparent after consideration of the detailed description and accompanying drawings herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Non-limiting and non-exhaustive embodiments of the present invention, including preferred embodiments, are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified.

[0016] FIG. 1 a is a perspective view of a torque limiting nut according to the technology of the present application.

[0017] FIG1 b is a three-dimensional view of a torque limiting nut according to the technology of the present application.

[0018] Figure 2 It is an exploded perspective view of the torque limiting nut shown in FIG. 1 a.

[0019] Figure 3 FIG. 1 is another exploded view of the torque limiting nut shown in FIG. 1 a .

[0020] Figure 4 A cross-sectional view of a portion of the torque limiting nut shown in FIG. 1 a.

[0021] Figure 5 1a shows a view of the connection between the threaded component of the torque limiting nut and the tool interface.

[0022] Figure 6 and Figure 7 for Figure 5 Cross-sectional view including force components for tightening and loosening the torque limiting nut in Figure 1a.

[0023] Figure 8 This is an exploded perspective view of another torque limiting nut consistent with the technology of the present application. DETAILED DESCRIPTION

[0024] The technology of the present application will now be described more fully below with reference to the accompanying drawings, which form a part hereof and illustrate specific exemplary embodiments by way of illustration. These embodiments are disclosed in sufficient detail to enable those skilled in the art to implement the technology of the present application. However, the embodiments may be implemented in a variety of different forms and should not be limited to the embodiments mentioned herein. Therefore, the detailed description below is not intended to be limiting.

[0025] The technology of the present application is described as specifically relating to axle nuts for vehicles. However, the technology described herein can be used for applications other than those specifically described herein. For example, the technology of the present application can be applied to fastening compressible materials such as wood or plastic, lifting limited weight using screws / nuts, or connecting pipe flanges with a specified torque, etc. In addition, the technology of the present application will be described in conjunction with exemplary embodiments. The word "exemplary" as used herein means "used as an example, instance, or illustration." The embodiments described herein as "exemplary" are not necessarily preferred or superior to other embodiments. In addition, unless specifically noted, the embodiments described herein should be considered exemplary.

[0026] Reference is now made to Figures 1a and 1b, which provide views of a torque-limiting nut assembly 100 consistent with the present teachings. In this exemplary embodiment, the torque-limiting nut is a torque-limiting spindle nut 100, as it is designed to be coupled to a spindle to mount a wheel-end assembly. However, in general, the terms torque-limiting nut and torque-limiting spindle nut may be used interchangeably. The torque-limiting spindle nut 100 includes a threaded component 110, a washer 120, and a tool interface 130. The torque-limiting spindle nut 100 has a bore 140, and the threaded component 110 has internal threads 112 along the bore 140. In this particular embodiment, the internal threads 112 are formed to engage with corresponding threads on a spindle. However, the torque-limiting spindle nut assembly 100 may be configured for other applications. The washer 120 of the torque-limiting spindle nut 100 includes an anti-rotation feature 150. The anti-rotation feature 150 may be a tang 152, as shown in Figure 1a, or a flat surface 154, as shown in Figure 1b. The anti-rotation device 150 is formed to be combined with a similar anti-rotation feature on a device, such as a shaft, that is threadedly connected to the threaded component 110. Other key / keyway type arrangements are possible, with the protrusion 152 and flat surface 154 being just two examples.

[0027] Figure 2 An exploded view of a torque limiting spindle nut 100 is shown. The torque limiting spindle nut 100 includes a threaded member 110, a washer 120, and a tool interface 130, which is currently shown as an octagonal tool interface, although any tool interface is possible. As will be explained further below, the washer 120 and the threaded member 110 are held together by a retaining device 210. The retaining device 210 includes a groove 212 on the outer diameter of the threaded member 110, an alignment groove 212 on the inner surface of the washer 120 (as shown below), and a tool interface 130. Figure 4 ), and a retaining ring 216. The retaining ring 216 is configured to fit between the groove 212 and the alignment groove (as shown below). Figure 4 As shown) in both, to combine the threaded component 110 and the gasket.

[0028] The threaded component 110 has a cylindrical body 220 that includes a bore 140 having an internal thread 112. The cylindrical body has a gasket side 222 that terminates at a flange portion 224. The groove 212 is formed on the outer diameter of the flange portion 224 of the threaded component 110. The cylindrical body has an outer side wall 226 that has a plurality of axially extending stops 228. The axially extending stops 228 are sized to fit a corresponding plurality of couplings 230. In this exemplary embodiment, these couplings 230 are pins 230. The pins 230 are shown as elongated cylindrical members, but they can also be as shown. Figure 8 The embodiment described herein involves the coupling member 230 being a pin 230 as shown.

[0029] The tool interface 130 has an inner bore 232 formed to mate with the cylindrical body 220 of the threaded component 110. The inner bore 232 has a plurality of axially extending recesses 234 that are generally aligned with a plurality of axially extending detents 228. The terms detent and recess may also be referred to as first and second detents, first and second recesses, etc. Furthermore, terms such as groove, channel, etc. may also be used to describe these features. A plurality of pins 230 engage both the detents 228 and the recesses 234, as described below. The inner bore 232 also has a seat groove 236. The seat groove 236 is shown as being approximately halfway along the inner bore 232, but it can be positioned anywhere along the inner bore 232. The seat groove 236 is open to the recesses 234. A resilient member 238, such as a garter spring, is disposed in the seat groove 236. In certain embodiments, the seat groove 236 may be referred to as a spring groove 236 because it accommodates a spring. The spring 238 provides a compressive force that tends to install the pin 230 into the stop 228. In some embodiments, the pin 230 may or may not have a seat 240 sized to engage with the spring 238. The assembly ring 242 engages with the assembly channel 244 in the outer sidewall 226 of the cylindrical body 220. The assembly ring 242 prevents the tool interface 130 from being removed from the threaded component 110. In some embodiments, the threaded component 110 may have a curled or turned edge at the upper edge of the cylindrical body 220 instead of the assembly ring 242.

[0030] Figure 3 Another exploded view of the torque limiting spindle nut 100 is shown. Figure 3 Shown are the threaded component 110, the gasket 120, the tool interface 130, the retaining ring 216, the cylindrical body 220 having a flange portion 224 and a combination channel 244 (the flange portion 224 has a groove 212 on the outer diameter), the outer side wall 226 having a plurality of axially extending stops 228, a plurality of pins 230, a resilient member 238 and a combination ring 242.

[0031] Figure 4 A cross-sectional view of the torque limiting shaft nut 100 is shown. Figure 4 As shown, the gasket 120 has an outer diameter sidewall 402 and a radially inwardly extending base surface 404. The outer diameter sidewall 402 includes an inner surface 406 having an alignment groove 408. The alignment groove 408 aligns with the groove 212 on the outer diameter of the threaded component 110. The retaining ring 216 is installed in both the groove 212 and the alignment groove 408 and serves as the retaining device 210 that combines the gasket 120 and the threaded component 110. The base surface 404 has a base surface hole 410 with a diameter equal to or greater than the diameter of the hole 140 of the threaded component 110. The outer diameter sidewall 402 and the base surface 404 are sized and shaped to accommodate the flange portion 224 of the threaded component 110.

[0032] The tool interface 130 has a bottom surface 412 that engages a top surface 414 of the flange portion 224. The tool interface 130 and the spring slot 236 are shown together with a resilient member 238, which in this embodiment is shown as a garter spring 238. The resilient member 238 provides a compressive force on the pin 230 that tends to install the pin 230 into the axially extending stop 228 of the threaded component 110.

[0033] Figure 4 Also shown is the combination ring 242 in the combination channel 244. As described above, after the tool interface 130 is installed on the threaded component 110, the combination ring 242 can be replaced by crimping or flipping the upper edge 420 of the cylindrical body 220.

[0034] Figure 5 Details of the combination of the tool interface 130 and the threaded component 110 are shown. Figure 5 A single detent 228, a recess 234, and a pin 230 are shown. The spring member 238 in the spring slot 236 is shown providing a compressive force to the pin 230 tending to seat the pin 230 in the detent 228. The recess 234 is open to the spring slot 236. The recess 234 has a pin seat 502 and a radially extending recess wall 504 extending approximately 90 degrees to the inner bore tangent, extending from the pin seat 502 to the inner bore 232 (see FIG. Figure 2 ). The recess 234 has a second recess wall 506 that is angled relative to the radially extending recess wall 504. In certain embodiments, the angle formed with the radially extending recess wall 504 can be approximately 25° to 50°; and in other embodiments, the angle can be approximately 10° to 85°. Preferably, in this embodiment, the angle is between 30° and 60° and is approximately 45°.

[0035] refer to Figure 6 Instructions Tighten the torque limiting shaft nut on the shaft. Figure 6A cross-sectional view of the threaded component 110 and tool interface 130 at the location of a single pin 230 is shown. Pin 230 is disposed within a retaining feature 228 of the threaded component 110 and a recess 234 of the tool interface 130. A resilient member 238 provides a compressive force tending to seat the pin 230 within the retaining feature 228. A force is applied to the tool interface 130, rotating it in the direction indicated by arrow A. Radially extending recess walls 504 contact the pin 230 and resilient member 238, compressing the pin 230 into the retaining feature 228, thereby forming a friction fit between the tool interface 130 and the threaded component 110. As the tool interface 130 rotates, the friction required to tighten the nut onto the shaft increases. This force, as indicated by arrow B, reacts against the compressive force of the resilient member 238. At a predetermined force (torque limit), the rotational force disengaging the pin 230 overcomes the compressive force of the resilient member 238, and the pin 230 moves out of the detent 228 and at least partially into the pin seat 502 or recess. Once the pin 230 is removed from the detent 228, the tool interface 130 is no longer frictionally engaged with the threaded component 110, and additional rotation of the tool interface 130 does not result in additional tightening of the threaded component 110 on the shaft.

[0036] refer to Figure 7 Description: Loosen the torque limiting shaft nut 100 from the shaft. Figure 7 A cross-sectional view of the threaded component 110 and tool interface 130 is shown at a single pin 230. The pin is seated in the detent 228 at maximum torque. When loosening the nut 100, a rotational force is applied to the tool interface 130, as indicated by arrow C. Initially, rotation of the tool interface 130 is torque-limited, and the pin 230 initially moves against the resilient member 238, tending to separate the pin 230 from the detent 228. However, the second recessed wall 506 is angled such that when the tool interface 130 is rotated in the direction indicated by arrow C, the pin 230 contacts the second recessed wall 506, which pushes the pin 230 into the detent 228 (as indicated by arrow D), thereby creating a frictional engagement between the tool interface 130 and the threaded component 110. As a result, the torque-limiting shaft nut 100 can be separated from the shaft.

[0037] Figure 8 An exploded perspective view of a portion of another torque limiting spindle nut 800 is shown. Figure 8 Threaded component 802 and tool interface 804 are shown. Threaded component 802 has a cylindrical body 806 with an internally threaded bore 808. Threaded component 802 has an annular and radially extending flange portion 810 at a first end 812 of cylindrical body 806. Flange portion 810 has a plurality of spaced-apart detents 814 in a tool interface surface 816 of flange portion 810.

[0038] The tool interface 804 has a plurality of axially extending recesses 818 corresponding to the plurality of spaced-apart detents 812. In some embodiments, the recesses 816 are holes (which may be blind holes) in the tool interface 804. Also, in some embodiments, the recesses 816 may be located on the inner surface of a hole in the tool interface 804. A plurality of engaging members 820, such as the illustrated balls 820, are located in the detents 814 and extend at least partially into the recesses 818 or holes 818. A plurality of compression members 822 are located in the axially extending recesses 818 or holes 818, with first ends 824 contacting the engaging members 820 and second ends 826 opposing the first ends 824 and engaging an edge 828 or a bottom 828 of the hole at the distal end 830 of the tool interface 804. In some embodiments, the second ends 826 may engage a retaining ring 832. The compression member 822, illustrated as a coil spring, provides a compressive force that tends to seat the coupling member 820 in the detent 814, thereby forming a frictional engagement between the tool interface 804 and the threaded component 802. When the torque limit is reached, the coupling member 820 pushes against the compression member 822 and disengages from the detent 814, so that the frictional engagement between the tool interface 804 and the threaded component 802 is released when the torque limit is reached.

[0039] Exemplary embodiments of the present technology include, among others:

[0040] Example 1. A torque limiting nut comprising:

[0041] A threaded component, comprising:

[0042] a cylindrical body having a threaded bore, an outer surface, and a plurality of detents in the outer surface; and

[0043] an annular flange portion extending radially from an end of the cylindrical body,

[0044] a tool interface having an inner bore sized to receive the cylindrical body of the threaded component, the tool interface comprising:

[0045] a plurality of recesses formed in the inner bore and corresponding to the plurality of stoppers;

[0046] an annular seat groove open to the recess and the inner bore; and

[0047] an elastic member in the spring slot;

[0048] A plurality of coupling members, wherein the plurality of coupling members are configured to be partially located in the plurality of stoppers and partially located in the plurality of recesses, wherein

[0049] The resilient member provides a compressive force on the plurality of coupling members such that rotation of the tool interface causes the threaded component to rotate until a rotational torque applied to the tool interface exceeds a predetermined torque limit.

[0050] Embodiment 2. The torque limiting nut of embodiment 1, wherein each of the plurality of recesses includes a seat groove for accommodating the elastic member.

[0051] Embodiment 3. The torque limiting nut as described in the above embodiment, wherein each of the plurality of recesses formed in the inner hole includes at least a coupling seat, a radially extending recess wall, and a second recess wall.

[0052] Embodiment 4. The torque limiting nut of the preceding embodiment, wherein the second recessed wall is angled relative to the radially extending recessed wall.

[0053] Embodiment 5. The torque limiting nut as described in the previous embodiment, wherein the second recessed wall forms an angle of 20 to 70 degrees with the radially extending recessed wall.

[0054] Embodiment 6. The torque limiting nut as described in the above embodiment, wherein the angle is between 30 degrees and 60 degrees.

[0055] Embodiment 7. The torque limiting nut as described in the previous embodiment, wherein the angle is about 45 degrees.

[0056] Embodiment 8. The torque limiting nut as described in the previous embodiment further includes a washer, wherein the washer is coupled to the threaded component via a retaining device.

[0057] Embodiment 9. A torque limiting nut as described in the preceding embodiment, wherein the retaining means comprises a groove in the outer diameter of the flange portion of the threaded component, an alignment groove in the washer, and a retaining ring in the groove and the alignment groove.

[0058] Embodiment 10. The torque limiting nut of claim 8, wherein the washer includes an anti-rotation feature.

[0059] Embodiment 11. The torque limiting nut of claim 10, wherein the anti-rotation feature is at least one of a protrusion or a flat surface.

[0060] Embodiment 12. A torque limiting nut as described in the preceding embodiments, comprising a combination ring, wherein the threaded component comprises a combination channel sized to accommodate the combination ring such that the combination ring prevents the tool interface from sliding off the cylindrical body of the threaded component.

[0061] Embodiment 13. The torque limiting nut as described in the above embodiment, wherein the elastic member includes a retaining spring.

[0062] Embodiment 14. The torque limiting nut as described in the above embodiment, wherein the elastic member includes at least one of a spring washer, a wave spring or a die spring.

[0063] Embodiment 15. The torque limiting nut as described in the above embodiment, wherein the plurality of coupling members are pins.

[0064] Example 16. The torque limiting nut as described in the above embodiment, wherein the multiple engaging members are balls.

[0065] Example 17. A torque limiting nut comprising:

[0066] A threaded component, comprising:

[0067] a cylindrical body having a threaded bore and an outer surface; and

[0068] an annular flange portion extending radially from an end of the cylindrical body, the annular flange portion having a tool interface surface including a plurality of spaced-apart detents,

[0069] a tool interface having an inner bore sized to receive the cylindrical body of the threaded component, the tool interface including a plurality of recesses corresponding to the plurality of spaced-apart detents;

[0070] a plurality of engaging members, wherein the plurality of engaging members are configured to be partially located in the plurality of stoppers and partially located in the plurality of recesses; and

[0071] A plurality of compression members in the plurality of recesses, wherein each of the plurality of compression members provides a compressive force on each of the plurality of engagement members such that rotation of the tool interface causes the threaded component to rotate until a rotational torque applied to the tool interface exceeds a predetermined torque limit.

[0072] Embodiment 18. The torque limiting nut of Embodiment 17, wherein the plurality of engagement members comprises a plurality of balls and the plurality of compression members comprises a plurality of springs.

[0073] Example 19. The torque limiting nut of Examples 17 and 18, wherein the plurality of recesses comprises a plurality of holes.

[0074] Embodiment 20. The torque limiting nut of Embodiment 18, wherein each of the plurality of springs includes a first end coupled to a ball and a second end opposite the first end coupled to a retaining ring.

[0075] Although the present technology has been described with respect to a certain structure and material, it should be understood that the invention defined in the appended claims is not limited to the specific structure and material described. On the contrary, the specific aspects described are only used as a form of implementing the present invention. Since multiple embodiments of the present invention can be implemented without departing from the spirit and scope of the present invention, the present invention is subject to the claims appended hereto. Unless otherwise indicated, all numbers and expressions used in the specification (except the claims), such as those representing dimensions, physical characteristics, etc., are understood to be modified by the term "approximately" in all cases. At least, without attempting to limit the application of the doctrine of equivalents to the claims, each numerical parameter modified by the term "approximately" described in the specification or claims should at least be interpreted in view of the number of significant digits described and by applying rounding techniques. In addition, all ranges disclosed herein should be understood to include and provide support for claims that describe any and all sub-ranges or all or single values ​​contained therein. For example, a stated range of 1 to 10 should be considered to include and provide support for any and all subranges or individual values ​​recited in the claim between and / or including the minimum value of 1 and the maximum value of 10; that is, all subranges starting with a minimum value of 1 or greater and ending with a maximum value of 10 or less (e.g., 5.5 to 10, 2.34 to 3.56, etc.) or any value from 1 to 10 (e.g., 3, 5.8, 9.9994, etc.).

Claims

1. A torque limiting nut comprising: A threaded component, comprising: a cylindrical body having a threaded bore, an outer surface, and a plurality of detents in the outer surface; and an annular flange portion extending radially from an end of the cylindrical body, a tool interface, separate from the threaded component and having an inner bore sized to receive the cylindrical body of the threaded component, the tool interface comprising: A plurality of recesses are formed in the inner hole and correspond to the plurality of stoppers, each of the plurality of recesses comprising seat groove; a spring slot open to the recess and the inner bore; and The elastic member in the spring groove, Each of the seat grooves accommodates the elastic member; a plurality of engaging members, wherein the plurality of engaging members are configured to be located partially in the plurality of detents and partially in the plurality of recesses, and The resilient member provides a compressive force on the plurality of coupling members such that rotation of the tool interface causes the threaded component to rotate until a rotational torque applied to the tool interface exceeds a predetermined torque limit.

2. The torque limiting nut of claim 1, wherein each of the plurality of recesses formed in the inner bore includes at least a coupling seat, a radially extending recess wall, and a second recess wall.

3. The torque limiting nut of claim 2, wherein the second recessed wall is angled relative to the radially extending recessed wall.

4. The torque limiting nut according to claim 3, wherein: The second recessed wall forms an angle of 20 to 70 degrees with the radially extending recessed wall.

5. The torque limiting nut according to claim 4, wherein: The angle is between 30 degrees and 60 degrees.

6. The torque limiting nut according to claim 5, wherein: The angle is 45 degrees.

7. The torque limiting nut of claim 1, further comprising a washer, wherein the washer is coupled to the threaded component by a retaining device.

8. The torque limiting nut according to claim 7, wherein: The retaining means includes a groove in the outer diameter of the flange portion of the threaded component, an alignment groove in the washer, and a retaining ring in the groove and the alignment groove.

9. The torque limiting nut according to claim 7, wherein: The spacer includes an anti-rotation feature.

10. The torque limiting nut according to claim 9, wherein: The anti-rotation device is at least one of a protrusion or a flat surface.

11. The torque limiting nut of claim 1 , comprising a combination ring, wherein the threaded component includes a combination channel sized to receive the combination ring such that the combination ring prevents the tool interface from sliding off the cylindrical body of the threaded component.

12. The torque limiting nut according to claim 1, wherein: The elastic member includes a clamping spring.

13. The torque limiting nut according to claim 1, wherein: The elastic member includes at least one of a spring washer, a wave spring or a mold spring.

14. The torque limiting nut according to claim 1, wherein: The plurality of coupling elements are pins, balls or a combination thereof.

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