Nut and nut extrusion device
By designing a nut with a first and second states, the deformation lock of the through hole is used to tightly embed the outside of the shaft, the problem of existing nuts damaging threads when limiting torque is solved, and the effect of stabilizing connection and reducing production costs is achieved.
Patent Information
- Application Number
- CN202421039281.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing M24 nuts are prone to damage the threads when limiting torque, and the torque exceeds the specification requirements during assembly, resulting in axial clearance failure.
A nut is designed, wherein the part is provided with a through hole, and has a first state and a second state. When the nut is switched from the first state to the second state, the through hole causes the inward contraction to cause the nut to be locked and clamped to the outside of the shaft, avoiding the use of rivets.
It effectively avoids damage to the external thread of the shaft, ensures the stability of the connection between the nut and the external thread, avoids torque exceeding the specification requirements, and reduces the mold cost of manufacturing nuts.
Smart Images
Figure CN222596524U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle components, and in particular to a nut and a nut extrusion device. Background Art
[0002] Currently, M24 nuts usually use six rivets to limit the torque to ensure that the M24 nuts will not loosen or rotate under external force.
[0003] However, the restrictions imposed by rivets may exceed the bearing capacity of threads (such as shaft threads), causing serious damage to the threads. Thread fragments can easily get stuck in the thread alignment, causing instability in the nut and thread connection, resulting in the torque required during assembly exceeding the specification requirements, leading to axial clearance failure.
[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content
[0005] Based on this, the present application provides a nut and a nut extrusion device, which can effectively prevent the external thread of the shaft from being damaged, which is beneficial to ensuring the connection stability between the nut and the external thread and avoiding the torque exceeding the specification requirements; in addition, it also reduces the mold cost of manufacturing nuts, which is beneficial to reducing the production cost of nuts.
[0006] According to some embodiments, the present application provides a nut, wherein a through hole is provided in the middle of the nut, and the nut has a first state and a second state; wherein,
[0007] When the nut is in the first state, the through hole matches with the shaft provided with external threads, so that the nut is sleeved on the outside of the shaft;
[0008] When the nut is switched from the first state to the second state, the through hole is deformed to shrink inwards, so that the nut is locked and embraced on the outer side of the shaft.
[0009] In some embodiments, when the nut is switched from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction.
[0010] In some embodiments, the nut is evenly provided with a plurality of cutting grooves along the circumference.
[0011] In some embodiments, when the nut is switched from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction; wherein each of the deformation regions corresponds to a cutting groove.
[0012] In some embodiments, the nut comprises a hexagonal nut having six cutting slots.
[0013] In some embodiments, when the nut is switched from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction.
[0014] In some embodiments, the through hole has three deformation regions evenly distributed in the circumferential direction, corresponding one to the three cutting grooves arranged at intervals.
[0015] According to some embodiments, the present application also provides a nut squeezing device for squeezing the nut described in some of the above embodiments radially inward so that the through hole is deformed to shrink inward and switches from a first state to a second state.
[0016] In some embodiments, the nut extrusion device is provided with a slot and a stopper; wherein,
[0017] The clamping groove is used for clamping the nut;
[0018] The stopper is used to generate a squeezing force along the radial inward direction of the nut.
[0019] In some embodiments, the nut pressing device is configured as:
[0020] When the nut is clamped in the clamping groove, the stoppers are evenly distributed on the outer side of the nut.
[0021] The nut and nut extrusion device provided in this application can / at least have the following advantages:
[0022] The nut provided in the embodiment of the present application has a first state and a second state. When the nut is in the first state, the nut can be sleeved on the outside of the shaft and located at a preset installation position. By switching the nut from the first state to the second state, the through hole of the nut is deformed to shrink inward, so that the nut is locked and embraced on the outside of the shaft. Compared with the existing nuts, the embodiment of the present application can limit the torque of the nut with fewer or even no rivets, effectively avoiding damage to the external thread of the shaft, which is beneficial to ensuring the connection stability between the nut and the external thread and avoiding the torque exceeding the specification requirements. In addition, since fewer or even no rivets are required, the mold cost for manufacturing the nut is also reduced, which is beneficial to reducing the production cost of the nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.
[0024] Figure 1A schematic top view of a nut provided in some embodiments of the present application when in a first state;
[0025] Figure 2 for Figure 1 A schematic top view of the nut in a second state;
[0026] Figure 3 A schematic diagram of the distribution of deformation areas when the nut provided in some embodiments of the present application is in the second state;
[0027] Figure 4 A vertical cross-sectional schematic diagram of a nut squeezing device provided in some embodiments of the present application;
[0028] Figure 5 A schematic horizontal cross-sectional view of a nut squeezing device provided in some embodiments of the present application. DETAILED DESCRIPTION
[0029] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0031] It should be understood that the terms first and second are only used to distinguish one state from another state, and these states are not limited by the terms. Therefore, without departing from the teachings of this application, the first state can be called the second state, and similarly, the second state can also be called the first state; the first state and the second state are different states.
[0032] Nothing in this specification should be interpreted as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application. In addition, the illustrations provided in this embodiment are only schematic illustrations of the basic concept of the present disclosure. Although the illustrations only show components related to the present disclosure and are not drawn according to the number, shape and size of components in actual implementation, the type, quantity and proportion of each component in actual implementation may be changed arbitrarily, and the component layout type may also be more complicated.
[0033] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that when the terms "consisting of" and / or "comprising" are used in this specification, the presence of the features, integers, elements and / or components may be determined, but the presence or addition of one or more other features, integers, elements, components and / or groups is not excluded. At the same time, when used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0034] Currently, M24 nuts usually use six rivets to limit the torque to ensure that the M24 nuts will not loosen or rotate under external force.
[0035] However, the restrictions imposed by rivets may exceed the bearing capacity of threads (such as shaft threads), causing serious damage to the threads. Thread fragments can easily get stuck in the thread alignment, causing instability in the nut and thread connection, resulting in the torque required during assembly exceeding the specification requirements, leading to axial clearance failure.
[0036] Based on this, the present application provides a nut and a nut extrusion device, which can effectively prevent the external thread of the shaft from being damaged, which is conducive to ensuring the connection stability between the nut and the external thread and preventing the torque from exceeding the specification requirements; in addition, it also reduces the mold cost for manufacturing the nut, which is conducive to reducing the production cost of the nut. The details will be described in the subsequent embodiments.
[0037] According to some embodiments, the present application provides a nut. The size of the nut may include but is not limited to M24, M20, M16, M12, M10, etc.
[0038] See also Figure 1 The nut has a through hole T in the middle and has a first state and a second state. When the nut is in the first state, for example Figure 1 As shown, the through hole T can be matched with a shaft with an external thread so that the nut is sleeved on the outside of the shaft; when the nut is switched from the first state to the second state, for example Figure 2 As shown, the through hole T is deformed to shrink inwards so that the nut is locked and embraced on the outside of the shaft.
[0039] The nut provided in the embodiment of the present application has a first state and a second state. When the nut is in the first state, the nut can be sleeved on the outside of the shaft; at this time, the nut is movable along the extension direction of the shaft on the outside of the shaft, so the nut can be moved to a preset installation position in the first state. By switching the nut from the first state to the second state, the through hole T of the nut is deformed to shrink inward, so that the nut is locked and embraced on the outside of the shaft.
[0040] Compared with the existing nuts, the embodiments of the present application can limit the torque of the nut with fewer or even no rivets, effectively preventing the external thread of the shaft from being damaged, which is conducive to ensuring the connection stability between the nut and the external thread and preventing the torque from exceeding the specification requirements. In addition, since fewer or even no rivets are required, the mold cost for manufacturing the nut is also reduced, which is conducive to reducing the production cost of the nut.
[0041] The embodiment of the present application does not specifically limit the method for switching the nut from the first state to the second state. As an example, the nut can be switched from the first state to the second state by using a tool to squeeze the outer edge of the nut, but it is not limited thereto.
[0042] In some embodiments, when the nut switches from the first state to the second state, the through hole T may have multiple deformation regions evenly distributed in the circumferential direction. Figure 3 As shown in FIG. 1 , the through hole T may have three deformation regions S1 , S2 and S3 evenly distributed in the circumferential direction.
[0043] When the nut provided in the above embodiment is switched to the second state, multiple deformation areas are evenly distributed in the circumferential direction, which helps to avoid deformation and / or stress concentration caused by uneven force on the nut, thereby improving the stability and durability of the nut.
[0044] In some embodiments, the nut may be provided with a plurality of cutting grooves evenly distributed along the circumference.
[0045] The embodiment of the present application does not specifically limit the number of cutting grooves provided on the nut. Figures 1 to 3 As shown in , the nut can be evenly provided with six cutting grooves K along the peripheral direction. In this case, the nut is a hexagonal nut.
[0046] In some embodiments, when the nut switches from the first state to the second state, the through hole T may have multiple deformation regions evenly distributed in the circumferential direction; wherein each deformation region corresponds to a cutting groove. Figure 3 As shown in FIG. 1 , the through hole T may have three deformation regions S1 , S2 and S3 evenly distributed in the circumferential direction; wherein each deformation region corresponds to a cutting groove K. As shown in FIG.
[0047] As for the distribution of the deformation areas on the nut, as an example, the three deformation areas S1, S2 and S3 can correspond to the three cutting grooves K arranged at intervals. Figure 3 As shown, at this time, the angle between the center lines of any two deformation areas among the three deformation areas S1, S2 and S3 is equal to or approximately equal to 120°.
[0048] In the nut provided in the above embodiment, the number of deformation areas uniformly distributed in the circumferential direction of the through hole T is smaller than the number of cutting grooves, which can reduce the stress concentration generated on the nut during extrusion, and is beneficial to reducing the risk of cracks and / or unnecessary deformation that may occur in the nut during the stress process.
[0049] In some other embodiments, the number of deformation regions may also be the same as the number of cutting grooves K; in this case, each deformation region may be arranged in one-to-one correspondence with the cutting groove K.
[0050] Based on the same concept, the present application also provides a nut squeezing device according to some embodiments. The nut squeezing device can be used to squeeze the nuts provided in some of the aforementioned embodiments radially inward, so that the through hole T is deformed to shrink inward, and switches from the first state to the second state. Therefore, the technical effects that can be achieved by the aforementioned nuts can also be achieved by the nut squeezing device, which will not be repeated here.
[0051] Specifically, the shape and structure of the nut can be found in the above content, which will not be repeated here.
[0052] In some embodiments, the nut pressing device may be specifically provided with a slot and a stopper. Figure 4 As shown, the clamping groove A can be used to clamp the nut, and the stopper can be used to generate an extrusion force along the radial inward direction of the nut.
[0053] The embodiment of the present application does not specifically limit the specific location of the stopper. In some embodiments, the location of the stopper can be specifically configured as follows: when the nut is engaged in the slot A, the stopper is evenly distributed on the outside of the nut.
[0054] For example Figure 5 As shown, the nut extrusion device is provided with three blocks S1', S2' and S3'. When the nut is clamped in the clamping groove A, the three blocks S1', S2' and S3' can be evenly distributed on the outside of the nut. Figure 1 and Figure 5 It is understood that the nut extrusion device can generate an extrusion force in the radial inward direction of the nut through the three blocks S1', S2' and S3', and correspondingly evenly extrude the through hole T in the circumferential direction to form three deformation areas S1, S2 and S3.
[0055] It can be understood that in the nut extrusion device provided in the above embodiment, since the three blocks S1', S2' and S3' can be evenly distributed on the outside of the nut, it can be ensured that when the nut is switched to the second state, the extrusion force is evenly distributed in the circumferential direction of the nut, which helps to avoid deformation and / or stress concentration caused by uneven force on the nut, thereby improving the stability and durability of the nut.
[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A nut, characterized in that: A through hole is provided in the middle of the nut, and the nut has a first state and a second state; wherein, When the nut is in the first state, the through hole matches with the shaft provided with external threads, so that the nut is sleeved on the outside of the shaft; When the nut is switched from the first state to the second state, the through hole is deformed to shrink inwards, so that the nut is locked and embraced on the outer side of the shaft.
2. The nut according to claim 1, characterized in that: When the nut is switched from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction.
3. The nut according to claim 1, characterized in that: The nut is evenly provided with a plurality of cutting grooves along the peripheral direction.
4. The nut according to claim 3, characterized in that: When the nut switches from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction; wherein each of the deformation regions corresponds to a cutting groove.
5. The nut according to claim 1, characterized in that: The nut comprises a hexagonal nut having six cutting grooves.
6. The nut according to claim 5, characterized in that: When the nut is switched from the first state to the second state, the through hole has a plurality of deformation regions evenly distributed in the circumferential direction.
7. The nut according to claim 3, characterized in that: The through hole has three deformation areas evenly distributed in the circumferential direction, corresponding to the three cutting grooves arranged at intervals.
8. A nut extrusion device, characterized in that: It is used to extrude the nut according to any one of claims 1 to 7 radially inwardly, so that the through hole is deformed to shrink inwardly, and switches from the first state to the second state.
9. The nut pressing device according to claim 8, characterized in that: The nut extrusion device is provided with a slot and a stopper; wherein, The clamping groove is used for clamping the nut; The stopper is used to generate a squeezing force along the radial inward direction of the nut.
10. The nut pressing device according to claim 9, characterized in that: The nut pressing device is configured as follows: When the nut is clamped in the clamping groove, the stoppers are evenly distributed on the outer side of the nut.