Connecting sleeve set and fastening mechanism

Abstract

The utility model provides a connecting sleeve group and a fastening mechanism, the connecting sleeve group comprises a nut, the lower part of the nut is provided with a ratchet wheel extending along the circumferential direction; the gasket is constructed to respond to the locking force provided by the nut to abut against an external installation body, and the surface, facing the installation body, of the gasket is provided with a plurality of protruding anti-skid parts so that the gasket can tightly abut against the installation body; the pawl is arranged on the gasket and is constructed to swing between a locking position which is pressed against the first surface of any ratchet of the ratchet wheel and a follow-up position which is in contact with the second surface of the ratchet in response to the rotation of the ratchet wheel so as to limit the nut to loosen relative to the assembled bolt; and the elastic piece is arranged between the pawl and the gasket and is suitable for resetting the pawl from the follow-up position to the locking position. The fastening mechanism comprises a connecting sleeve set and a bolt. The bolt is provided with an external thread suitable for being matched with the nut of the connecting sleeve set.

Description

Technical Field

[0001] At least one embodiment of the utility model relates to the technical field of fastening mechanisms, and more specifically, to a connecting set and a fastening mechanism. Background Art

[0002] Bolts and nuts are a commonly used fastening mechanism, which are suitable for connecting at least two external mechanisms.

[0003] At present, the fastening mechanisms used mainly include bolts, nuts and washers. In order to increase the friction between the joint surface of the fastening mechanism and the installation body, a protruding anti-slip portion can be provided on the surface of the washer facing the installation body. However, during the long-term use of the fastening mechanism, the nut is easily loosened relative to the bolt in response to external vibrations. Therefore, a corresponding anti-loosening mechanism should be configured.

[0004] To this end, the loosening of the nut can be limited by the cooperation between the nut and the washer. For example, in the patent application with application number 2024200758456, the nut and the washer can be combined by configuring a convex ring on the nut and configuring an annular groove on the washer to limit the loosening of the bolt. However, after the nut and the washer are assembled, if the above-mentioned connection set needs to be removed, the convex ring embedded in the washer needs to be destroyed. Therefore, the connection set is not suitable for use in a fastening mechanism that needs to be reused. Utility Model Content

[0005] In order to solve at least one technical problem in the prior art and other aspects, the utility model provides a connection set and a fastening mechanism, so that the nut can only rotate in one direction along the direction of locking with the bolt, so that the nut will basically not loosen relative to the bolt, thereby providing a larger friction force for a longer time; and the nut and the washer can be separated by simply removing the pawl.

[0006] The utility model provides a connection set, comprising: a nut, a ratchet extending in the circumferential direction is arranged at the lower part of the nut; a washer, which is configured to press against an external installation body in response to a locking force provided by the nut, and a surface of the washer facing the installation body is provided with a plurality of protruding anti-slip parts to tightly press against the installation body; a pawl, which is arranged on the washer and is configured to swing between a locking position pressing against a first surface of any ratchet tooth of the ratchet and a follow-up position contacting with a second surface of the ratchet tooth in response to the rotation of the ratchet, so as to limit the nut from being loosened relative to the assembled bolt; and an elastic member, which is arranged between the pawl and the washer and is suitable for resetting the pawl from the follow-up position to the locking position.

[0007] According to an embodiment of the utility model, a protruding extension portion is provided on one side of the washer; the pawl is swingably mounted on the extension portion by means of a screw.

[0008] According to an embodiment of the utility model, the elastic member includes a torsion spring, the torsion spring is sleeved on the screw, and two arms of the torsion spring are pressed against the pawl and the washer respectively.

[0009] According to an embodiment of the utility model, an annular portion is provided on the side of the nut facing the washer, and the annular portion is configured to pass through the through hole in the middle of the washer in response to the locking force applied by the nut and be connected to the washer.

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

[0011] According to an embodiment of the utility model, the inner edge of the through hole in which the washer is arranged is configured to be stepped, and one end of the through hole close to the nut forms a shoulder extending radially inward; wherein the flared side is configured to pass through the through hole in response to the locking force provided by the nut and press against the shoulder to lock the axial displacement of the nut relative to the washer.

[0012] According to an embodiment of the present invention, the anti-slip portion includes a plurality of anti-slip strips.

[0013] According to an embodiment of the utility model, a plurality of the anti-slip strips are arranged at intervals along the circumferential direction.

[0014] According to an embodiment of the utility model, the anti-slip strip is constructed as a triangular prism structure.

[0015] The utility model also provides a fastening mechanism, comprising a connecting sleeve and a bolt, wherein the bolt is provided with an external thread suitable for matching with a nut of the connecting sleeve.

[0016] According to the connection set and fastening mechanism provided by the utility model, the ratchet arranged on the nut cooperates with the pawl arranged on the washer, so that the nut can only rotate unidirectionally in the direction of locking with the bolt, so that the anti-slip portion formed on the washer is tightly pressed against the installation surface, and it is not easy to wear; and under the limiting action of the pawl, the nut basically will not loosen relative to the bolt, thereby providing a large friction force for a long time; and when it needs to be removed, the nut and the washer can be separated by simply removing the pawl, so that the connection set can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a stereoscopic diagram of a connection set according to an exemplary embodiment of the utility model;

[0018] Figure 2 yes Figure 1 a perspective view of the illustrated exemplary embodiment from a bottom perspective;

[0019] Figure 3 yes Figure 1 An exploded view of the parts of the connection set of the exemplary embodiment shown;

[0020] Figure 4 is a perspective view of a connection set according to another exemplary embodiment of the present invention, showing a nut provided with an annular portion; and

[0021] Figure 5 yes Figure 4 The connecting set of the exemplary embodiment shown is in an assembled state of use.

[0022] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0023] 1. Nut;

[0024] 11. Ratchet;

[0025] 12. Internal thread;

[0026] 13. Ring part;

[0027] 2. Washer;

[0028] 21. Extension;

[0029] 22. Anti-slip part;

[0030] 23. Shoulders;

[0031] 3. Ratchet;

[0032] 4. Torsion springs; and

[0033] 5. Screws. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0035] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of features, steps, operations and / or components, but do not exclude the existence 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 should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0037] When using expressions such as "at least one of A, B and C", it should generally be interpreted according to the meaning of the expression commonly understood by technical personnel in this field. 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, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.

[0038] Figure 1 It is a stereoscopic diagram of a connection set according to an illustrative embodiment of the utility model. Figure 2 yes Figure 1 A perspective view of the exemplary embodiment shown is shown from a bottom perspective.

[0039] According to a connection kit provided by the utility model, Figure 1 and Figure 2 As shown, it includes a nut 1, a washer 2, a pawl 3 and an elastic member. A ratchet 11 extending in the circumferential direction is provided at the lower part of the nut 1. The washer 2 is configured to press against the external mounting body in response to the locking force provided by the nut 1, and a plurality of protruding anti-slip portions 22 are provided on the surface of the washer 2 facing the mounting body to tightly press against the mounting body. The pawl 3 is provided on the washer 2, and is configured to swing between a locking position pressed against the first surface of any ratchet tooth of the ratchet 11 and a follow-up position contacting the second surface of the ratchet tooth in response to the rotation of the ratchet 11, so as to limit the nut 1 from loosening relative to the assembled bolt. The elastic member is provided between the pawl 3 and the washer 2, and is suitable for resetting the pawl 3 from the follow-up position to the locking position.

[0040] In this embodiment, the ratchet 11 provided on the nut 1 cooperates with the pawl 3 provided on the washer 2, so that the nut 1 can only rotate in one direction along the direction of locking with the bolt (such as Figure 2Clockwise as shown). When the nut 1 is assembled with the bolt (not shown in the figure) under the action of an external assembly tool (such as a wrench), the internal thread 12 of the nut 1 cooperates with the external thread of the bolt, so that the nut 1 continuously presses the washer 2 to provide a locking force close to the installation body; when the washer 2 is in contact with the installation body, the nut 1 continues to approach the installation body, and the side of the washer 2 provided with the anti-slip portion 22 responds to the large friction between the anti-slip portion 22 and the installation body and maintains the engagement state, and the nut 1 idles relative to the washer 2 and continuously applies the locking force until the clamping force and / or torque value required for assembly is reached. Under the positive pressure provided by the locking force, the friction between the anti-slip portion 22 and the installation body increases, and there is basically no relative sliding with the installation body, thereby reducing the wear of the anti-slip portion 22, so that the washer 2 and the installation body are under a large friction for a long time. Once the nut 1 is no longer tightened, the pawl 3 is reset to the locking position under the action of the elastic member, thereby effectively preventing the nut 1 from loosening relative to the bolt. Furthermore, when the connection set needs to be dismantled, the nut 1 and the washer 2 can be separated by simply removing the ratchet 3, so that the connection set can be reused.

[0041] According to the embodiments of the present utility model, Figure 1 and Figure 2 As shown, an outwardly protruding extension portion 21 is provided on one side of the washer 2. The pawl 3 is swingably mounted on the extension portion 21 through a screw 5.

[0042] According to the embodiments of the present utility model, Figure 1 and Figure 2 As shown, the elastic member includes a torsion spring 4. The torsion spring 4 is sleeved on the screw 5, and two arms of the torsion spring 4 are pressed against the pawl 3 and the washer 2 respectively.

[0043] In an illustrative embodiment, Figure 1 and Figure 2 As shown, the ratchet 11 includes but is not limited to being integrally formed with the nut 1. In detail, the ratchet 11 is integrally formed at the lower end of the outer portion of the nut 1 and protrudes radially outward. Further, the outer shape of the other parts of the nut 1 except the part forming the ratchet 11 includes but is not limited to being configured as an external hexagonal structure, a quadrilateral structure, and any other structure suitable for cooperating with an external assembly tool (such as a wrench) to transmit torque.

[0044] In an illustrative embodiment, Figure 1 and Figure 2 As shown, one side of the gasket 2 (such as Figure 2The extension portion 21 is provided on the right side of the nut 20 (shown in FIG. 1 ). Specifically, the extension portion 21 is provided with a threaded hole. Furthermore, the screw 5 is installed on the extension portion through the threaded hole to serve as the shaft of the pawl 3. Furthermore, the two arms of the torsion spring 4 are respectively pressed against the wall surfaces of the pawl 3 and the extension portion 21 that are separated from each other to provide pressure to swing the pawl 3 in a direction close to the nut.

[0045] In this embodiment, the screw 5 serves as a stopper for mounting the pawl 3 and as an axis for allowing the pawl 3 to swing. The pawl 3 is swingably mounted on the washer, and a continuous elastic force is applied by the torsion spring 4 so that the nut 1 (including the ratchet 11) can only be moved in one direction (such as Figure 2 The nut 1 is rotated in the clockwise direction relative to the bolt (i.e., the tightening direction of the nut 1), so that the tightening of the nut 1 relative to the bolt is not blocked, but the loosening of the nut 1 relative to the bolt is restricted. Moreover, when the nut 1 needs to be separated from the washer 2, it is only necessary to remove the screw 5 from the bolt hole, thereby realizing the non-destructive removal and repeated use of the connection set.

[0046] Figure 3 yes Figure 1 An exploded view of the parts of the connection kit of the exemplary embodiment is shown.

[0047] According to the embodiments of the present utility model, Figure 3 As shown, the anti-slip portion 22 includes a plurality of anti-slip strips.

[0048] According to the embodiments of the present utility model, Figure 3 As shown, a plurality of anti-slip strips are arranged at intervals along the circumferential direction.

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

[0050] In an illustrative embodiment, Figure 3 As shown, a plurality of anti-slip strips are arranged in a scattered manner around the center of the gasket 2 .

[0051] In an illustrative embodiment, Figure 3 As shown, the anti-slip strip is configured as a triangular prism structure, that is, a triangular structure is formed along its cross section. In detail, the width of the end of the anti-slip strip connected to the gasket 2 is configured to be greater than the width of the end away from the gasket 2, so that the anti-slip strip and the installation body mainly form line contact and / or point contact, so as to increase the friction between the anti-slip strip and the installation body. It should be understood that the embodiments of the utility model are not limited to this.

[0052] For example, the anti-slip strip may be configured as an arc-shaped strip structure (ie, the cross section of the anti-slip strip is configured as a semicircular structure).

[0053] As another example, the anti-slip strips may be constructed as a trapezoidal strip structure.

[0054] For another example, the anti-slip portion 22 is configured as a hemisphere, a hemi-ellipsoid, a cube, or any other protruding structure suitable for increasing the friction between the gasket and the mounting body.

[0055] Figure 4 It is a stereoscopic view of a connection set according to another exemplary embodiment of the utility model, showing a nut provided with an annular portion. Figure 5 yes Figure 4 The connecting set of the exemplary embodiment shown is in an assembled state of use.

[0056] According to the embodiments of the present utility model, Figure 4 and Figure 5 As shown, a ring portion 13 is provided on one side of the nut 1 facing the washer 2 , and the ring portion 13 is configured to pass through a through hole in the middle of the washer 2 in response to a locking force applied by the nut 1 and be connected to the washer 2 .

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

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

[0059] In an illustrative embodiment, Figure 4 and Figure 5 As shown, the annular portion 13 is formed on the bottom surface of the nut 1. In detail, the annular portion 13 has a narrow side formed on the nut 1 and a flared side having a diameter greater than the narrow side to form a bell-mouth-like structure.

[0060] In an illustrative embodiment, Figure 5 As shown, the inner edge of the gasket 2 is provided with a shoulder 23 protruding inward. In detail, the inner diameter of the shoulder 23 is configured to be larger than the outer diameter of the narrow side and smaller than the inner diameter of the expanded side, and has a thickness substantially the same as that of the annular portion 13. Further, the shoulder 23 and the surface of the gasket 2 provided with the anti-slip portion (such as Figure 5 The upper surface shown in the figure is formed into a step shape so that the flared side of the annular portion 13 can be pressed against the shoulder 23 to prevent the nut 1 from separating from the washer 2.

[0061] In such an embodiment, when the nut 1 is assembled with the external bolt, the nut 1 approaches the washer 2 through threaded engagement until the washer 2 is pressed against the installation body. At this time, the nut 1 continues to press against the washer 2 to provide a locking force, and the 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 sleeved on the outside of the bolt. After the flared side passes through the through hole, it restores its original shape, so that the flared side is pressed against the shoulder 23 formed on the inner edge of the washer 2, and is embedded in 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 joint surface between the washer 2 and the installation body. In this way, the washer 2 can be connected to the nut 1, thereby further preventing the nut from loosening. When the nut 1 and the washer 2 need to be removed, the nut 1 only needs to be rotated in the opposite direction to make the annular portion 13 of the nut 1 idle relative to the washer 2, so that the washer 2 can be removed from the bolt together. After the washer 2 and the bolt are removed, since the deformation of the annular portion 13 in the radial direction is no longer restricted by the bolt, the annular portion 13 can be tilted relative to the washer 2, so that the annular portion 13 is deformed into an elliptical shape, so that it can be pulled out from the through hole of the washer 2.

[0062] According to a fastening mechanism provided by the utility model, Figures 1 to 5 As shown, it comprises a connection set and a bolt. The bolt is provided with an external thread suitable for matching with a nut (1) of the connection set.

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

[0064] The embodiments of the present invention are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present invention is defined by the attached claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A connection kit, characterized in that: include: A nut (1), wherein a ratchet (11) extending in a circumferential direction is provided at a lower portion of the nut (1); A washer (2) is configured to press against an external mounting body in response to a locking force provided by the nut (1); a surface of the washer (2) facing the mounting body is provided with a plurality of protruding anti-slip portions (22) so as to press tightly against the mounting body; a ratchet pawl (3) disposed on the washer (2) and configured to swing between a locking position pressed against a first surface of any ratchet tooth of the ratchet wheel (11) and a follower position contacting a second surface of the ratchet tooth in response to rotation of the ratchet wheel (11) to limit the nut (1) from loosening relative to the assembled bolt; and An elastic member is arranged between the pawl (3) and the washer (2), and is suitable for resetting the pawl (3) from the following position to the locking position.

2. The connection kit according to claim 1, characterized in that: An outwardly protruding extension portion (21) is provided on one side of the gasket (2); The ratchet pawl (3) is swingably mounted on the extension portion (21) via a screw (5).

3. The connection kit according to claim 2, characterized in that: The elastic member comprises a torsion spring (4), the torsion spring (4) is sleeved on the screw (5), and two arms of the torsion spring (4) are pressed against the pawl (3) and the washer (2) respectively.

4. The connection kit according to claim 1, characterized in that: An annular portion is provided on one side of the nut (1) facing the washer (2), and the annular portion is configured to pass through a through hole in the middle of the washer (2) in response to a locking force applied by the nut (1) and be connected to the washer (2).

5. The connection kit according to claim 4, characterized in that: The annular portion is configured such that the inner diameter gradually increases from one end close to the nut (1) to the other end to form a flared side.

6. The connection kit according to claim 5, characterized in that: The inner edge of the through hole provided in the washer (2) is configured to be stepped, and an end of the through hole close to the nut (1) forms a shoulder (23) extending radially inward; 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).

7. The connection kit according to any one of claims 1 to 6, characterized in that: The anti-slip portion (22) comprises a plurality of anti-slip strips.

8. The connection kit according to claim 7, characterized in that: A plurality of anti-slip strips are arranged at intervals along the circumferential direction.

9. The connection kit according to claim 8, characterized in that: The anti-slip strip is configured as a triangular prism structure.

10. A fastening mechanism, characterized in that: include: A connection kit as claimed in any one of claims 1 to 9; as well as A bolt is provided with an external thread suitable for matching with a nut (1) of the connection set.

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