Quick locking nut structure

Abstract

A quick locking nut structure relates to the technical field of nuts and comprises a nut body, a lifting groove with a downward opening is concavely formed in the bottom of the nut body, a lifting ring is movably arranged in the lifting groove, spiral grooves are formed in the peripheral wall of the lifting ring in a central symmetry mode, and transmission pins are correspondingly and symmetrically arranged on the inner wall of the nut body. The inner ends of the transmission pins movably extend into the corresponding spiral grooves; the nut body is in threaded fit with the screw rod, and when the nut body is screwed, the transmission pin drives the lifting ring to move up and down through axial component force generated by movement in the spiral groove. According to the utility model, the nut body is in threaded fit with the screw rod, and the lifting ring is driven to move up and down by axial component force generated by movement of the transmission pin in the spiral groove, so that quick locking or loosening is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a quick locking nut structure. Background Art

[0002] Nuts, as crucial components in mechanical connections, are widely used in a wide range of products and equipment. Their primary function is to lock and secure workpieces through manual or tool rotation. Their operating principle is based on the geometric characteristics of the thread, specifically the lead angle. This allows the nut to move up and down along the thread axis during rotation, thereby tightening or loosening the workpiece.

[0003] The thread pitch plays a crucial role in the nut's travel efficiency. Pitch, the distance between adjacent thread tips, directly affects the linear distance the nut travels per rotation. Generally speaking, a larger pitch increases the nut's travel distance for the same number of rotations, thereby improving the efficiency of tightening or loosening workpieces. However, increasing the pitch also brings a series of problems, the most significant of which is a decrease in self-locking properties. When the pitch is too large, the nut is more likely to loosen due to vibration or external forces, affecting the stability and security of the connection.

[0004] Taking the M16 nut as an example, its standard thread pitch is typically no greater than 2mm, meaning that the nut can only move 2mm in one rotation. In some applications requiring a larger working stroke, such as eye nuts, the working stroke may reach 9mm or even more. In this case, if a nut with a standard thread pitch is used, multiple rotations are required to complete the entire stroke, which undoubtedly significantly reduces work efficiency. Furthermore, as the nut is gradually tightened, the friction between it and the threaded shaft gradually increases, making subsequent rotation operations more difficult. Especially when multiple nuts need to be tightened simultaneously, this time-consuming and labor-intensive operation undoubtedly increases workers' labor intensity and working time. Utility Model Content

[0005] The utility model proposes a quick locking nut structure to solve the technical problems pointed out in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A quick-locking nut structure comprises a nut body, a lifting groove with a downward opening recessed at the bottom of the nut body, a lifting ring movably disposed in the lifting groove, a spiral groove symmetrically disposed on the peripheral wall of the lifting ring, and a transmission pin symmetrically disposed on the inner wall of the nut body, wherein the inner end of the transmission pin movably extends into the corresponding spiral groove;

[0008] The nut body is matched with the screw thread. When the nut body is screwed, the driving pin drives the lifting ring to move up and down through the axial component force generated by moving in the spiral groove.

[0009] Furthermore, the lifting groove is connected to the screw hole of the nut body, a damping ring is fixedly provided on the inner circumference of the lifting ring, the inner circumference of the damping ring is flush with the inner circumference of the screw hole of the nut body, and a damper is provided in the screw rod to cooperate with the damping ring.

[0010] Furthermore, the damper includes a damping hole horizontally arranged in the screw rod, a damping spring is arranged in the damping hole, a damping steel ball is arranged at the outer end of the damping spring, and the outer end of the damping steel ball is in contact with the inner circumferential wall of the damping ring.

[0011] Furthermore, a plane bearing is provided at the lower end of the lifting ring.

[0012] Furthermore, the spiral groove includes a curved segment and a plane segment that are connected to each other.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This new design utilizes the threaded engagement between the nut and the screw, utilizing the axial force generated by the movement of the drive pin within the spiral groove to drive the lifting ring up and down, achieving rapid tightening and loosening. The damper and damping ring cooperate effectively to prevent the nut from rotating with the screw, improving locking stability. A flat bearing at the lower end of the lifting ring significantly reduces friction during tightening, enabling effortless and efficient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 4 This is a structural diagram of the lifting ring of the utility model;

[0020] Figure 5This is a schematic diagram of the structure of the utility model in the downward pressing state. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] like Figure 1-5 As shown, a quick-locking nut structure includes a nut body 1, a lifting groove 2 with a downward opening is recessed at the bottom of the nut body 1, a lifting ring 3 is movably provided in the lifting groove 2, and a spiral groove 4 is symmetrically provided on the peripheral wall of the lifting ring 3. A driving pin 5 is symmetrically provided on the inner wall of the nut body 1, and the inner end of the driving pin 5 is movably extended into the corresponding spiral groove 4;

[0026] The nut body 1 is threadably matched with the screw rod 10 . When the nut body 1 is screwed, the driving pin generates an axial force by moving in the spiral groove 4 , which drives the lifting ring 3 to move up and down.

[0027] When the nut body 1 is threadedly engaged with the screw rod 10 and is subjected to a rotational torque, the nut body 1 begins to rotate. Since the inner end of the transmission pin 5 is movable and extends into the spiral groove 4, the transmission pin 5 moves in the spiral groove 4 as the nut body 1 rotates. The design of the spiral groove 4 enables the transmission pin 5 to generate an axial component force during the movement, and this component force will act on the lifting ring 3, causing it to move up and down along the axis of the lifting groove 2. The up and down movement of the lifting ring 3 directly realizes the rapid locking or loosening operation of the nut on the workpiece. Due to the ingenious cooperation between the spiral groove 4 and the transmission pin 5, the nut can produce a larger axial movement distance under the same number of rotations, thereby improving the efficiency of locking or loosening.

[0028] Specifically, as shown in the figure, the lifting groove 2 is connected to the threaded hole of the nut body 1. A damping ring 6 is fixedly mounted on the inner circumference of the lifting ring 3. The inner circumferential wall of the damping ring 6 is flush with the inner circumferential wall of the threaded hole of the nut body 1. A damper is disposed within the screw 10 to cooperate with the damping ring 6. The damper includes a damping hole disposed horizontally within the screw 10. A damping spring 8 is disposed within the damping hole. A damping steel ball 9 is disposed at the outer end of the damping spring 8. The outer end of the damping steel ball 9 contacts the inner circumferential wall of the damping ring 6. When the nut body is rotated, tangential friction is generated between the steel ball and the damping ring 6. This tangential friction offsets the tangential force component generated by the rotation of the nut body 1, thereby preventing the tangential force component from driving the nut body 1 into rotation. The damper ensures that the nut body 1 can stably transmit torque during rotation while preventing unnecessary rotational movement, thereby improving the accuracy and stability of locking or loosening.

[0029] Specifically, as shown in the figure, a plane bearing 7 is provided at the lower end of the lifting ring 3. The installation of the plane bearing greatly reduces the friction during locking, and cooperates with the rapid lifting function to achieve both labor-saving and work-saving effects.

[0030] Specifically, as shown in the figure, the spiral groove 4 includes a curved section and a flat section 41 that are connected. During use, the nut body 1 is rotated, driving the drive pin 5 to rotate within the spiral groove 4. When smoothly moving from the curved section to the flat section 41, the drive pin 5 presses the spiral groove 4 to generate a downward force, driving the lifting ring 3 downward, causing the flat bearing 7 to abut against the surface of the locked workpiece. When the drive pin 5 enters the flat section 41, no vertical force is generated in the groove. The flat section 41 forms a locking effect on the lifting ring 3, forming a locking effect.

[0031] This utility model utilizes the threaded engagement of the nut body and the screw rod. When the nut body is turned, the axial force generated by the movement of the drive pin within the spiral groove drives the lifting ring up and down, achieving rapid tightening or loosening. The damper, through the coordination of the damping spring and damping steel balls with the damping ring, generates tangential friction to offset the tangential force of the nut body during rotation, preventing rotation and improving locking accuracy and stability. Furthermore, the flat bearing provided at the lower end of the lifting ring significantly reduces friction during locking, achieving a labor-saving and energy-saving effect.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A quick locking nut structure, characterized in that: The nut body comprises a nut body, a lifting groove with a downward opening is recessed at the bottom of the nut body, a lifting ring is movably arranged in the lifting groove, a spiral groove is symmetrically arranged on the peripheral wall of the lifting ring, and a transmission pin is symmetrically arranged on the inner wall of the nut body, and the inner end of the transmission pin is movably extended into the corresponding spiral groove; The nut body is matched with the screw thread. When the nut body is screwed, the driving pin drives the lifting ring to move up and down through the axial component force generated by moving in the spiral groove.

2. A quick locking nut structure according to claim 1, characterized in that: The lifting groove is connected to the screw hole of the nut body, a damping ring is fixedly provided on the inner circumference of the lifting ring, the inner circumferential wall of the damping ring is flush with the inner circumferential wall of the screw hole of the nut body, and a damper is provided in the screw rod to cooperate with the damping ring.

3. A quick locking nut structure according to claim 2, characterized in that: The damper includes a damping hole arranged horizontally in the screw rod, a damping spring is arranged in the damping hole, a damping steel ball is arranged at the outer end of the damping spring, and the outer end of the damping steel ball contacts the inner peripheral wall of the damping ring.

4. A quick locking nut structure according to claim 3, characterized in that: A plane bearing is provided at the lower end of the lifting ring.

5. A quick locking nut structure according to claim 4, characterized in that: The spiral groove includes a curved segment and a plane segment which are connected to each other.

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