Connection set and fastening mechanism

Abstract

The present disclosure provides a connecting sleeve set and a fastening mechanism. The connecting sleeve set comprises: a nut, a lower portion of the nut is provided with a ratchet wheel extending in a circumferential direction; a washer configured to be pressed against an external mounting body in response to a locking force provided by the nut, a surface of the washer facing the mounting body is provided with a plurality of protruding anti-skid portions to be tightly pressed against the mounting body; a pawl provided on the washer and configured to swing between a locking position in which the pawl is pressed against a first surface of any ratchet tooth of the ratchet wheel and a following position in which the pawl is in contact with a second surface of the ratchet tooth in response to rotation of the ratchet wheel, so as to limit loosening of the nut relative to the assembled bolt; and an elastic member provided between the pawl and the washer and adapted to reset the pawl from the following position to the locking position. The fastening mechanism comprises the connecting sleeve set and a bolt. The bolt is provided with an external thread adapted to cooperate with the nut of the connecting sleeve set.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to the field of fastening mechanism technology, and more specifically, to a connecting sleeve and fastening mechanism. Background Technology

[0002] Bolts and nuts are a common type of fastening mechanism used to connect at least two external mechanisms.

[0003] Currently, the fastening mechanisms mainly include bolts, nuts, and washers. To increase the friction between the fastening mechanism and the mating surface of the mounting body, protruding anti-slip parts can be provided on the surface of the washer facing the mounting body. However, during long-term use, external vibrations can easily cause the nut to loosen relative to the bolt. Therefore, a corresponding anti-loosening mechanism should be configured.

[0004] Therefore, the loosening of the nut can be restricted by the engagement of the nut and washer. For example, in patent application number 2024200758456, a convex ring is provided on the nut and an annular groove is provided on the washer to engage the nut and washer, thereby restricting the loosening of the bolt. However, after the nut and washer are assembled, if the above-mentioned connecting sleeve needs to be removed, the convex ring embedded in the washer needs to be destroyed. Therefore, this connecting sleeve is not suitable for use in fastening mechanisms that need to be reused. Summary of the Invention

[0005] To address at least one technical problem in the prior art and other aspects, this disclosure provides a connecting sleeve and a fastening mechanism that allows the nut to rotate only in the direction of locking with the bolt, preventing the nut from loosening relative to the bolt and thus providing greater frictional force over a longer period of time; furthermore, the nut and washer can be separated simply by removing the pawl.

[0006] This disclosure provides a connecting sleeve assembly, comprising: a nut having a ratchet extending circumferentially from its lower portion; a washer configured to press against an external mounting body in response to a locking force provided by the nut, the washer having a plurality of protruding anti-slip portions on its surface facing the mounting body to tightly press against the mounting body; a pawl disposed on the washer and configured to swing between a locked position pressing against a first surface of any ratchet tooth of the ratchet and a follow-up position contacting a second surface of the ratchet tooth in response to rotation of the ratchet, thereby limiting the loosening of the nut relative to the assembled bolt; and an elastic element disposed between the pawl and the washer, adapted to return the pawl from the follow-up position to the locked position.

[0007] According to an embodiment of the present disclosure, a protruding extension is provided on one side of the washer; the pawl is oscillatingly mounted on the extension by a screw.

[0008] According to an embodiment of this disclosure, the elastic element includes a torsion spring, which is sleeved on the screw, and the two arms of the torsion spring respectively press against the pawl and the washer.

[0009] According to an embodiment of the present disclosure, an annular portion is provided on the side of the nut facing the washer, and the annular portion is configured to pass through a through hole in the middle of the washer in response to the locking force applied by the nut and connect with the washer.

[0010] According to an embodiment of the present disclosure, the annular portion is configured such that the inner diameter gradually increases from one end near the nut to the other end to form a flared side.

[0011] According to an embodiment of the present disclosure, the inner edge of the through hole provided by the washer is configured to be stepped, and the end of the through hole near the nut forms a shoulder extending radially inward; wherein the flared side is configured to respond to the locking force provided by the nut through the through hole and press against the shoulder to lock the axial displacement of the nut relative to the washer.

[0012] According to embodiments of this disclosure, the anti-slip portion includes a plurality of anti-slip strips.

[0013] According to embodiments of this disclosure, a plurality of the aforementioned anti-slip strips are arranged at circumferential intervals.

[0014] According to embodiments of this disclosure, the anti-slip strip is configured as a triangular prism structure.

[0015] This disclosure also provides a fastening mechanism, including a connecting sleeve and a bolt, the bolt being configured with external threads suitable for engaging with a nut of the connecting sleeve.

[0016] According to the connecting sleeve and fastening mechanism provided in this disclosure, by using a ratchet on the nut and a pawl on the washer, the nut can only rotate in one direction in the direction of locking with the bolt, thereby pressing the anti-slip part formed on the washer tightly against the mounting surface, which is not easy to cause wear; and under the restriction of the pawl, the nut will not loosen relative to the bolt, thus providing a large friction force for a longer period of time; and when it is necessary to remove it, the nut and the washer can be separated simply by removing the pawl, so that the connecting sleeve can be reused. Attached Figure Description

[0017] Figure 1 This is a perspective view of a connecting sleeve according to an illustrative embodiment of the present disclosure;

[0018] Figure 2 yes Figure 1 A perspective view of the illustrative embodiment from a low angle;

[0019] Figure 3 yes Figure 1 An exploded view of the connecting sleeve assembly of the illustrative embodiment shown;

[0020] Figure 4 This is a perspective view of a connecting sleeve assembly according to another illustrative embodiment of the present disclosure, showing a nut configured with an annular portion; and

[0021] Figure 5 yes Figure 4 The diagram shows the usage state of the connecting sleeve assembly in an illustrative embodiment.

[0022] The meanings of the reference numerals in the attached figure are as follows:

[0023] 1. Nut;

[0024] 11. Ratchet;

[0025] 12. Internal thread;

[0026] 13. Circular part;

[0027] 2. Washers;

[0028] 21. Extension section;

[0029] 22. Anti-slip part;

[0030] 23. Shoulders;

[0031] 3. Claws;

[0032] 4. Torsion springs; and

[0033] 5. Screws. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0035] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0036] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0037] When using expressions such as "at least one of A, B, and C", they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, a system having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0038] Figure 1 This is a perspective view of a connecting sleeve according to an illustrative embodiment of the present disclosure. Figure 2 yes Figure 1 The schematic embodiment shown is a perspective view from a low angle.

[0039] According to a connection assembly provided in this disclosure, such as Figure 1 and Figure 2 As shown, the assembly includes a nut 1, a washer 2, a pawl 3, and a resilient element. A ratchet 11 extending circumferentially is provided at the lower part of the nut 1. The washer 2 is configured to press against an external mounting body in response to the locking force provided by the nut 1. The surface of the washer 2 facing the mounting body has multiple protruding anti-slip portions 22 to ensure tight pressure against the mounting body. The pawl 3 is disposed on the washer 2 and configured to swing between a locked position pressing against a first surface of any ratchet tooth of the ratchet 11 and a follow-up position contacting a second surface of the ratchet tooth in response to rotation of the ratchet 11, thereby limiting the loosening of the nut 1 relative to the assembled bolt. A resilient element is disposed between the pawl 3 and the washer 2, suitable for returning the pawl 3 from the follow-up position to the locked position.

[0040] In this embodiment, the ratchet 11 on the nut 1 cooperates with the pawl 3 on the washer 2, allowing the nut 1 to rotate only in the direction of locking with the bolt (e.g., Figure 2(In the clockwise direction shown). When the nut 1 is assembled with the bolt (not shown) under the action of an external assembly tool (such as a wrench), the internal thread 12 of the nut 1 engages with the external thread of the bolt, causing the nut 1 to continuously press against the washer 2 to provide a locking force close to the mounting body. Once the washer 2 is in contact with the mounting body, the nut 1 continues to move closer to the mounting body. The side of the washer 2 with the anti-slip part 22 responds to the greater friction between the anti-slip part 22 and the mounting body, maintaining the engagement state. The nut 1 then rotates relative to the washer 2 and continues to apply a locking force until the required clamping force and / or torque value for assembly is reached. Under the positive pressure provided by the locking force, the friction between the anti-slip part 22 and the mounting body increases, and there is essentially no relative sliding between them, thereby reducing the wear of the anti-slip part 22 and keeping the washer 2 under greater friction for a long time. Once the nut 1 is no longer tightened, the pawl 3, under the action of the elastic element, returns to the locked position, effectively preventing the nut 1 from loosening relative to the bolt. Furthermore, when the connecting sleeve needs to be removed, simply removing the pawl 3 will separate the nut 1 from the washer 2, thus allowing the connecting sleeve to be reused.

[0041] According to embodiments of this disclosure, such as Figure 1 and Figure 2 As shown, a protruding extension 21 is provided on one side of the washer 2. The pawl 3 is oscillatingly mounted on the extension 21 by a screw 5.

[0042] According to embodiments of this disclosure, such as Figure 1 and Figure 2 As shown, the elastic element includes a torsion spring 4. The torsion spring 4 is sleeved on the screw 5, and the two arms of the torsion spring 4 press against the pawl 3 and the washer 2 respectively.

[0043] In one illustrative embodiment, such as Figure 1 and Figure 2 As shown, the ratchet 11 includes, but is not limited to, being integrally formed with the nut 1. Specifically, the ratchet 11 is integrally formed on the lower outer end of the nut 1 and protrudes radially outward. Furthermore, the shape of the other parts of the nut 1, excluding the portion forming the ratchet 11, includes, but is not limited to, being configured as an external hexagonal structure, a quadrilateral structure, or any other structure suitable for engaging with external assembly tools (such as wrenches) to transmit torque.

[0044] In one illustrative embodiment, such as Figure 1 and Figure 2 As shown, one side of washer 2 (such as...) Figure 2An extension 21 is provided on the right side (as shown). Specifically, the extension 21 is provided with a threaded hole. Furthermore, a screw 5 is mounted on the extension through the threaded hole to serve as the shaft of the pawl 3. Even further, the two arms of the torsion spring 4 press against the opposing walls of the pawl 3 and the extension 21 to provide pressure that causes the pawl 3 to swing toward the nut.

[0045] In this embodiment, screw 5 serves as a limiting element for mounting pawl 3 and as a shaft allowing pawl 3 to swing. Pawl 3 is swingably mounted on a washer, and a continuous spring force is applied by torsion spring 4, so that nut 1 (including ratchet 11) can only move in one direction (e.g., ...). Figure 2 The screw 1 rotates clockwise relative to the bolt (i.e., the tightening direction of the nut 1), thus allowing the nut 1 to be tightened relative to the bolt without obstruction, but restricting the loosening of the nut 1 relative to the bolt. Furthermore, when it is necessary to separate the nut 1 from the washer 2, it is only necessary to remove the screw 5 from the bolt hole, thereby achieving non-destructive removal and repeated use of the connecting sleeve.

[0046] Figure 3 yes Figure 1 An exploded view of the connecting sleeve assembly of the illustrative embodiment shown.

[0047] According to embodiments of this disclosure, such as Figure 3 As shown, the anti-slip part 22 includes multiple anti-slip strips.

[0048] According to embodiments of this disclosure, such as Figure 3 As shown, multiple anti-slip strips are arranged at intervals along the circumference.

[0049] According to embodiments of this disclosure, such as Figure 3 As shown, the anti-slip strip is constructed as a triangular prism structure.

[0050] In one illustrative embodiment, such as Figure 3 As shown, multiple anti-slip strips are arranged in a radiating pattern around the center of washer 2.

[0051] In one illustrative embodiment, such as Figure 3 As shown, the anti-slip strip is constructed as a triangular prism structure, that is, forming a triangular-like mechanism along its cross-section. Specifically, the width of the end of the anti-slip strip connected to the washer 2 is constructed to be greater than the width of the end away from the washer 2, so that the anti-slip strip and the mounting body primarily form line contact and / or point contact, thereby increasing the friction between the anti-slip strip and the mounting body. It should be understood that the embodiments of this disclosure are not limited thereto.

[0052] For example, anti-slip strips can be constructed as arc-shaped strips (i.e., the cross-section of the anti-slip strip is constructed as a semi-circular structure).

[0053] For example, anti-slip strips can be constructed into a trapezoidal strip structure.

[0054] For example, the anti-slip part 22 may be constructed as a hemisphere, a semi-ellipsoid, a cube, or any other protruding structure suitable for increasing the friction between the washer and the mounting body.

[0055] Figure 4 This is a perspective view of a connecting sleeve assembly according to another illustrative embodiment of the present disclosure, showing a nut with an annular portion. Figure 5 yes Figure 4 The diagram shows the usage state of the connecting sleeve assembly in an illustrative embodiment.

[0056] According to embodiments of this disclosure, such as Figure 4 and Figure 5 As shown, an annular portion 13 is provided on the side of the nut 1 facing the washer 2. The annular portion 13 is configured to pass through the through hole in the middle of the washer 2 in response to the locking force applied by the nut 1 and to connect with the washer 2.

[0057] According to embodiments of this disclosure, such as Figure 4 and Figure 5 As shown, the annular portion 13 is configured such that the inner diameter gradually increases from one end near the nut 1 to the other end to form a flared side.

[0058] According to embodiments of this disclosure, such as Figure 4 and Figure 5 As shown, the inner edge of the through hole provided in the washer 2 is constructed in a stepped shape, and a shoulder 23 extending radially inward is formed at the end of the through hole near the nut 1. The flared side is configured to pass through the through hole and press against the shoulder 23 in response to the locking force provided by the nut 1, so as to lock the axial displacement of the nut 1 relative to the washer 2.

[0059] In one illustrative embodiment, such as Figure 4 and Figure 5 As shown, an annular portion 13 is formed on the bottom surface of the nut 1. In detail, the annular portion 13 has a narrow opening side formed on the nut 1 and a flared opening side with a diameter larger than the narrow opening side, so as to form a structure similar to a trumpet mouth.

[0060] In one illustrative embodiment, such as Figure 5 As shown, the inner edge of the washer 2 has an inwardly protruding shoulder 23. Specifically, the inner diameter of this shoulder 23 is configured to be larger than the outer diameter of the narrow opening side and smaller than the inner diameter of the flared opening side, and has a thickness approximately the same as the annular portion 13. Furthermore, the shoulder 23 and the surface of the washer 2 where an anti-slip portion (such as...) are provided... Figure 5 The upper surface shown is stepped, so that the flared side of the annular portion 13 can press against the shoulder 23 to prevent the nut 1 from separating from the washer 2.

[0061] In this embodiment, when the nut 1 is assembled with the external bolt, it moves closer to the washer 2 through the threaded engagement until the washer 2 is pressed against the mounting body. At this time, the nut 1 continues to press against the washer 2 to provide a locking force. This locking force causes the flared side of the annular portion 13 to approach the through hole formed on the washer 2 and deforms in response to the elasticity of its own material, so that the flared side eventually passes through the through hole formed on the washer 2 and is fitted onto the outside of the bolt. After the flared side passes through the through hole, it returns to its initial shape, thereby pressing against the shoulder 23 formed on the inner edge of the washer 2 and fitting into the stepped structure formed by the shoulder 23 and the inner edge of the through hole, so that the flared side does not protrude from the mating surface between the washer 2 and the mounting body. This allows the washer 2 to connect with the nut 1, thereby further preventing the nut from loosening. When it is necessary to remove the nut 1 and washer 2, simply rotate the nut 1 in the opposite direction, causing the annular portion 13 of the nut 1 to rotate freely relative to the washer 2, thereby removing the washer 2 from the bolt along with it. After the washer 2 and bolt are removed, since the radial deformation of the annular portion 13 is no longer restricted by the bolt, the annular portion 13 can be tilted relative to the washer 2, causing the annular portion 13 to form a near-elliptical deformation, thereby allowing it to be pulled out from the through hole of the washer 2.

[0062] According to a fastening mechanism provided in this disclosure, such as Figures 1 to 5 As shown, it includes a connecting sleeve and a bolt. The bolt is configured with external threads suitable for mating with the nut (1) of the connecting sleeve.

[0063] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of the present invention. Throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding the present invention.

[0064] The embodiments of the present invention have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

Claims

1. A connecting sleeve, characterized in that, include: Nut (1), the lower part of which is provided with a ratchet (11) extending in the circumferential direction; The washer (2) is configured to press against the external mounting body in response to the locking force provided by the nut (1), and the surface of the washer (2) facing the mounting body is provided with a plurality of protruding anti-slip parts (22) to press tightly against the mounting body; A pawl (3), disposed on the washer (2), is configured to oscillate between a locked position pressing against a first face of either ratchet tooth of the ratchet (11) and a follow-up position in response to rotation of the ratchet (11) and contact with a second face of the ratchet tooth, thereby limiting the loosening of the nut (1) relative to the assembled bolt; and An elastic element is disposed between the pawl (3) and the washer (2), and is adapted to reset the pawl (3) from the follow-up position to the locking position; The nut (1) has an annular portion on the side facing the washer (2), and is configured to pass through the through hole in the middle of the washer (2) in response to the locking force applied by the nut (1) and connect with the washer (2). The annular portion has a narrow opening side and is configured to gradually increase the inner diameter from one end near the nut (1) to the other end to form a flared side. The inner edge of the through hole provided by the washer (2) is configured to be stepped. The end of the through hole near the nut (1) forms a shoulder (23) that extends radially inward. The inner diameter of the shoulder (23) is configured to be larger than that of the narrow opening side. The flared side is configured to respond to the locking force provided by the nut (1) through the through hole and press against the shoulder (23) to lock the axial displacement of the nut (1) relative to the washer (2).

2. The connecting sleeve according to claim 1, characterized in that, The washer (2) has an outwardly protruding extension (21) on one side. The pawl (3) is oscillatingly mounted on the extension (21) by a screw (5).

3. The connecting sleeve according to claim 2, characterized in that, The elastic element includes a torsion spring (4), which is sleeved on the screw (5), and the two arms of the torsion spring (4) press against the pawl (3) and the washer (2) respectively.

4. The connecting sleeve according to any one of claims 1 to 3, characterized in that, The anti-slip part (22) includes multiple anti-slip strips.

5. The connecting sleeve according to claim 4, characterized in that, Multiple anti-slip strips are arranged at circumferential intervals.

6. The connecting sleeve according to claim 5, characterized in that, The anti-slip strip is constructed as a triangular prism structure.

7. A fastening mechanism, characterized in that, include: The connecting sleeve as described in any one of claims 1 to 6; as well as Bolts, the bolts being configured with external threads suitable for mating with the nuts (1) of the connecting sleeve assembly.

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