Outer hexagonal locking nut
By designing an external hexagonal locking nut, utilizing the sliding connection between the inner liner and the tapered section, as well as springs and other structures, the problem of nut loosening during vibration and long-term use was solved, thus improving the reliability and stability of the connection.
Patent Information
- Application Number
- CN202520344849.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-01
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-03-01
AI Technical Summary
Existing external hexagonal nuts are prone to loosening in vibrating environments and after prolonged use, leading to a decrease in the reliability of the connection and potentially causing safety accidents.
An external hexagonal locking nut is designed, comprising an outer cylinder and an inner liner. The inner liner is slidably connected to the bolt through a tapered section. The inner liner clamps the bolt to prevent loosening. Combined with structures such as springs, grooves, and protrusions, it ensures that the nut remains tight during vibration and long-term use.
It effectively prevents nuts from loosening in vibrating environments and during long-term use, improves the reliability of connections, and ensures the stable operation of equipment or structures.
Smart Images
Figure CN223621990U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of nut technology, and more specifically, to an external hexagonal locking nut. Background Technology
[0002] Nuts, as commonly used fasteners, play a crucial role in numerous fields such as machinery manufacturing, construction engineering, and the automotive industry. Hexagonal nuts are one of the most common types of nuts, used in conjunction with bolts to achieve a secure connection between components. However, ordinary hexagonal nuts have some limitations in practical applications. For example, in vibration environments, ordinary nuts are prone to loosening, leading to a decrease in the reliability of the connection and affecting the normal operation of the entire equipment or structure, potentially even causing safety accidents in severe cases. Furthermore, in scenarios requiring long-term tightness, ordinary nuts may gradually lose some of their tightening force over time due to various factors, failing to meet long-term stable usage requirements. Therefore, a hexagonal lock nut that can effectively prevent loosening and maintain a reliable tightening effect is needed to solve these problems. Utility Model Content
[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide an external hexagonal locking nut, which solves the technical problem that nuts often loosen in vibrating environments and after long-term use in related technologies / prior technologies.
[0004] According to one aspect, at least one embodiment of this disclosure provides an external hexagonal lock nut for mounting on and locking to a bolt, comprising:
[0005] The outer cylinder has a cavity, and the cavity has a tapering section;
[0006] The inner liner has several parts, which are spaced apart on the circumferential direction of the inner wall of the tapered section, and are slidably connected to the tapered section along the axial direction of the cavity. After the inner liner slides along the tapered section, it is used to clamp the bolt.
[0007] Optionally, each of the inner linings has an internal thread, and the inner lining is threadedly connected to the bolt through the internal thread.
[0008] Optionally, the outer cylinder also has an opening that communicates with the cavity; the inner liner has an abutment end that extends to the outside of the opening and is used to abut against the end cap of the bolt.
[0009] Optionally, the outer cylinder also has a through hole located on the side of the outer cylinder away from the opening. The connection between the through hole and the tapered section forms a limiting plane, which is used to limit the inner liner.
[0010] Optional, also includes:
[0011] A plurality of springs are provided, each spring being disposed on the top surface of one of the inner lining bodies, with one end of the spring away from the inner lining body disposed on the limiting plane, the spring being used to provide force for the abutment end to extend out of the opening.
[0012] Optionally, the inner wall of the tapered section has a plurality of grooves, and further includes:
[0013] The protrusions are of several kinds, each of which is disposed on the outer wall of one of the inner liner bodies, and each of the protrusions is slidably disposed in one of the grooves.
[0014] Optionally, the slide is divided into a first straight section and a second straight section. The first straight section is used to assist the inner liner to rise, and the second straight section is used to assist the inner liner to lock.
[0015] Optionally, the second straight section has a slot, and after the protrusion moves along the second straight section, the protrusion engages in the slot.
[0016] Optional, also includes:
[0017] A rubber sealing ring is disposed on the inner wall of the through hole, and the rubber sealing ring abuts against the outer wall of the bolt in the circumferential direction.
[0018] Optional, also includes:
[0019] A boss is provided at the opening, and the boss is used to limit the bottom of the inner lining.
[0020] The beneficial effects of the embodiments disclosed herein are as follows:
[0021] In this disclosure, when the nut begins to be tightened onto the bolt, the inner liner contacts the external thread of the bolt, allowing for threaded connection. As the nut tightens, when the bottom of the inner liner contacts the nut of the bolt, the inner liner is compressed by the nut. Under the action of the tapering section, the inner liner moves upward along the tapering section and simultaneously moves towards the axis of the cavity, thereby clamping the bolt. Clamping the bolt with the inner liner effectively prevents the nut from loosening in vibrating environments or under long-term clamping conditions, improving the reliability of the connection. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of the nut in one embodiment of this disclosure;
[0024] Figure 2 This is a schematic diagram of the internal structure of a nut in one embodiment of this disclosure;
[0025] Figure 3 This is a schematic diagram of the abutment end structure in one embodiment of the present disclosure;
[0026] Figure 4 This is a schematic diagram of the inner lining plate structure in one embodiment of the present disclosure;
[0027] Figure 5 This is a schematic diagram of the outer cylinder and the slide groove structure in one embodiment of the present disclosure;
[0028] Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle.
[0029] In the figure: 1. Outer cylinder, 101. Cavity, 1011. Limiting plane, 102. Gradual narrowing section, 103. Opening, 104. Through hole, 105. Slide groove, 1051. First straight section, 1052. Second straight section, 1053. Slot, 2. Inner liner, 201. Internal thread, 202. Abutting end, 3. Spring, 4. Protrusion, 5. Rubber sealing ring, 6. Boss. Detailed Implementation
[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0036] like Figures 1-2 As shown, an external hexagonal locking nut is provided in one embodiment of the present disclosure for mounting on and locking to a bolt. It includes an outer cylinder having a cavity with a tapered section; and several inner liners, which are spaced apart on the circumferential direction of the inner wall of the tapered section. The inner liners are slidably connected to the tapered section along the axial direction of the cavity. After sliding along the tapered section, the inner liners are used to clamp the bolt.
[0037] For example, such as Figure 2 As shown, the external hexagonal lock nut consists of an outer cylinder and several inner liners. The outer cylinder has an internal cavity with a tapering section whose diameter gradually decreases from bottom to top. Several inner liners are spaced apart on the circumferential surface of the tapering section and can slide along the cavity axis with the tapering section. It should be noted that the surface of the inner liner in contact with the tapering section is an inclined plane, with the same inclination angle as the tapering section, ensuring that the inner liner is always in contact with the tapering section.
[0038] When the nut begins to be screwed onto the bolt, the inner liner comes into contact with the external thread of the bolt, and the inner liner can be threadedly connected to the bolt. As the nut is tightened, when the bottom of the inner liner contacts the nut of the bolt, the inner liner is squeezed by the nut. Under the action of the tapering section, the inner liner moves upward along the tapering section and simultaneously moves towards the axis of the cavity, thereby clamping the bolt.
[0039] By clamping the bolts with the inner liner, the nuts can be effectively prevented from loosening in vibrating environments or long-term clamping environments, thus improving the reliability of the connection.
[0040] In some examples, the liner has internal threads, and the liner is connected to the bolt thread via the internal threads.
[0041] For example, such as Figure 2-3 As shown, each liner has an internal thread for threaded connection with the bolt, the internal threads on adjacent liners are continuous, and there is a gap between adjacent liners to provide displacement space for the liners when locked.
[0042] The inner liner is connected to the bolt via internal threads. During the tightening of the nut, the threads engage to connect the inner liner to the bolt. This enhances the tightness of the nut-bolt connection and ensures that the threaded connection between the inner liner and the bolt is the same as that of a regular nut-bolt connection, reducing operational difficulty.
[0043] In some examples, the outer cylinder also has an opening that communicates with the cavity; the inner liner has an abutment end that extends outside the opening and is used to abut against the end cap of a bolt.
[0044] For example, such as Figure 2-4 As shown, the outer cylinder has an opening that connects to the cavity, and the inner liner has an abutment end that extends to the outside of the opening. The exposed abutment end also makes it easy for operators to determine the front and back of the nut.
[0045] After the bolt enters through the opening, it connects to the threaded inner liner. When the abutting end of the inner liner initially abuts against the bolt nut, the inner liner begins its locking action. When the nut is tightened, the abutting end is fully pressed into the opening, at which point the inner liner is firmly pressed against the outer surface of the bolt, thus locking the bolt. Furthermore, the contact between the abutting end and the bolt nut restricts the loosening of the nut, making the connection more secure.
[0046] In some examples, the outer cylinder also has a through hole located on the side of the outer cylinder away from the opening. The connection between the through hole and the tapered section forms a limiting plane, which is used to limit the inner liner.
[0047] For example, such as Figure 2-4As shown, the outer cylinder has a through hole on the side away from the opening. The connection between the through hole and the tapered section forms a limiting plane. This limiting plane is mainly used for subsequent spring installation and also prevents the inner liner from coming out of the through hole. When the inner liner slides within the tapered section, the limiting plane restricts its range of movement, preventing excessive movement. This ensures that the inner liner operates within a reasonable range and maintains the normal locking function of the nut.
[0048] In some examples, springs are also included, with several springs, each disposed on the top surface of an inner liner, with the end of the spring away from the inner liner disposed on a limiting plane, and the springs are used to provide force for the abutment end to extend out of the opening.
[0049] For example, such as Figure 4 As shown, when the abutting end is outside the opening, the spring is in its normal state. At this time, the spring can give the liner a downward force, so that the abutting end extends out of the opening and abuts tightly against the bolt end cap. It can be understood that when the bolt is threadedly connected to the liner plate, and the abutting end is not in contact with the bolt nut, the spring can prevent the bolt from pushing the liner plate, ensuring that the bolt can be smoothly screwed on when the liner plate and the bolt are initially threadedly connected.
[0050] In some examples, the inner wall of the tapered section has several grooves and also includes several protrusions, each of which is disposed on the outer wall of an inner liner and is slidably disposed in a groove.
[0051] For example, such as Figure 2 and Figure 5 As shown, when the inner liner slides within the tapered section, the protrusion moves along the groove, ensuring the stability and accuracy of the inner liner's movement. The cooperation between the groove and the protrusion makes the sliding of the inner liner smoother and improves the working reliability of the nut.
[0052] In some examples, the chute is divided into a first straight section and a second straight section. The first straight section is used to assist the inner liner in rising, and the second straight section is used to assist the inner liner in locking.
[0053] For example, such as Figure 5-6 As shown, the slide is divided into a first straight section and a second straight section. The direction of the first straight section is the same as that of the tapering section, and the direction of the second straight section is perpendicular to that of the tapering section. Furthermore, the direction of the second straight section is the same as that of the nut tightening direction.
[0054] As the abutting end of the nut enters the opening, the protrusions of the inner liner move in the first straight section, assisting the inner liner to rise linearly. Once the abutting end is fully inside the opening, as the nut is further tightened, the protrusions move into the second straight section, assisting the inner liner to lock in place. These different functional straight sections allow the inner liner to function better at different stages, optimizing the nut tightening process.
[0055] In some examples, the second straight section has a slot, and after the protrusion moves along the second straight section, the protrusion engages in the slot.
[0056] For example, such as Figure 6 As shown, after the protrusion moves to a certain position along the second straight section, it engages with the slot under the action of the spring, further fixing the position of the inner liner. The engagement between the slot and the protrusion increases the stability of the inner liner after it is locked, preventing it from loosening.
[0057] In some examples, a rubber sealing ring is also included, which is disposed on the inner wall of the through hole and abuts against the outer wall of the bolt in the circumferential direction.
[0058] For example, such as Figure 2 As shown, a rubber sealing ring is installed on the inner wall of the through hole, with a diameter slightly smaller than that of the bolt. After the nut is installed on the bolt, the rubber sealing ring tightly abuts against the outer circumference of the bolt, providing a seal. This prevents dust, moisture, and other impurities from entering the connection between the nut and the bolt, extending the service life of the connected components.
[0059] In some examples, a boss is also included, which is provided at the opening and is used to limit the bottom of the liner.
[0060] For example, such as Figure 2 As shown, a boss is provided at the opening. When the liner moves within the tapered section, the boss limits its bottom, preventing the liner from coming out of the opening. This ensures the liner remains in its normal working position and maintains the locking function of the nut.
[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A hexagonal locking nut for mounting on and locking to a bolt, characterized in that, include: The outer cylinder (1) has a cavity (101) having a tapered section (102). The inner liner (2) has several units, and the several units are spaced apart on the inner wall circumferentially of the tapered section (102). The several units are slidably connected to the tapered section (102) along the axial direction of the cavity (101). After the inner liner (2) slides along the tapered section (102), the inner liner (2) is used to clamp the bolt.
2. The external hexagonal locking nut according to claim 1, characterized in that, The inner liner (2) has an internal thread (201), and the inner liner (2) is threadedly connected to the bolt through the internal thread (201).
3. The external hexagonal locking nut according to claim 1, characterized in that, The outer cylinder (1) also has an opening (103) that communicates with the cavity (101); the inner liner (2) has an abutment end (202) that extends to the outside of the opening (103) and is used to abut against the end cap of the bolt.
4. The external hexagonal locking nut according to claim 3, characterized in that, The outer cylinder (1) also has a through hole (104), which is located on the side of the outer cylinder (1) away from the opening (103). The connection between the through hole (104) and the tapered section (102) forms a limiting plane (1011), which is used to limit the inner liner (2).
5. A hexagonal locking nut according to claim 4, characterized in that, Also includes: A plurality of springs (3) are provided, each spring (3) being disposed on the top surface of one of the inner liner (2), with one end of the spring (3) away from the inner liner (2) disposed on the limiting plane (1011), and the spring (3) being used to provide force for the abutting end (202) to extend out of the opening (103).
6. The external hexagonal locking nut according to claim 1, characterized in that, The inner wall of the tapered section (102) has several grooves (105), and also includes: There are several protrusions (4), each of which is disposed on the outer wall of one of the inner lining bodies (2), and each of the protrusions (4) is slidably disposed in one of the grooves (105).
7. A hexagonal locking nut according to claim 6, characterized in that, The slide (105) is divided into a first straight section (1051) and a second straight section (1052). The first straight section (1051) is used to assist the inner liner (2) to move upward, and the second straight section (1052) is used to assist the inner liner (2) to move laterally and lock.
8. A hexagonal locking nut according to claim 7, characterized in that, The second straight section (1052) has a slot (1053). After the protrusion (4) moves along the second straight section (1052), the protrusion (4) is engaged in the slot (1053).
9. A hexagonal locking nut according to claim 4, characterized in that, Also includes: A rubber sealing ring (5) is disposed on the inner wall of the through hole (104), and the rubber sealing ring (5) abuts against the outer wall of the bolt in the circumferential direction.
10. A hexagonal locking nut according to claim 3, characterized in that, Also includes: A boss (6) is provided at the opening (103), and the boss (6) is used to limit the bottom of the inner lining (2).