A toothed nut, a toothed assembly and a cue stick

Abstract

The utility model provides a kind of toothed nut, toothed assembly and billiard cue, belong to cue technical field.It solves the technical problem that the cue and lengthening rod of existing billiard cue are easy to loosen, etc.The billiard cue includes main rod, lengthening rod and toothed assembly, the toothed nut of toothed assembly is fixed with main rod screw joint, the fixed thread section of the toothed screw of toothed assembly is fixed with lengthening rod screw joint, the toothed nut includes the main body of cylindrical shape, the outer thread is equipped in the outside of main body, inner thread is equipped in the inner hole of main body, inner end fixedly equipped with damping sleeve in inner hole in inner thread.The utility model has the advantage that billiard cue does not appear the situation of rotating loosening when using.

Description

Technical Field

[0001] This utility model belongs to the field of billiard cue technology, and relates to a threaded nut, a threaded assembly, and a billiard cue. Background Technology

[0002] Billiard cues often use extension rods, which are typically connected using screws. A threaded assembly connects the cue and extension rod, consisting of an internal and external threaded nut and a screw. The external thread of the nut secures to the cue, while the screw secures to the extension rod and engages with the internal thread of the nut. However, in practice, even a slight reverse rotation of the extension rod causes the screw and nut to rotate relative to each other, resulting in loosening between the extension and the cue. This necessitates frequent retightening of the extension, leading to a poor user experience. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a threaded nut. The technical problem solved by this utility model is to provide an improved threaded nut.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A threaded nut includes a cylindrical body with external threads on its outer side and internal threads in its inner hole, characterized in that a damping sleeve is fixedly provided at the inner end of the internal threads in the inner hole.

[0006] In the aforementioned threaded nut, the damping sleeve is made of silicone or rubber.

[0007] In the aforementioned threaded nut, the damping sleeve has a first contact surface that is cylindrical and a second contact surface that is frustum-shaped.

[0008] In the aforementioned threaded nut, an inner groove is formed on the inner side of the inner hole, and the damping sleeve is engaged in the inner groove. This structure enables the damping sleeve to be stably fixed in the main body.

[0009] In the aforementioned threaded nut, a positioning hole is provided at the end of the inner hole away from the internal thread. The positioning hole is a non-circular hole. A positioning part is provided at the end of the damping sleeve. The outer circumferential surface of the positioning part matches the positioning hole, and the positioning part passes through the positioning hole. The circumferential fixing strength of the damping sleeve is increased by having the positioning part of the damping sleeve pass through the non-circular positioning hole.

[0010] In the aforementioned threaded nut, the positioning hole is a polygonal hole, an elliptical hole, or an internal toothed ring-shaped hole.

[0011] In the aforementioned threaded nut, a raised ring is provided at the end of the inner hole away from the internal thread. The inner hole of the raised ring is the aforementioned positioning hole, and a limiting part is also provided at the outer end of the positioning part. The raised ring is located between the limiting part and the end of the damping sleeve. The raised ring structure increases the axial fixing strength of the damping sleeve.

[0012] In the aforementioned threaded nut, the damping sleeve is formed using an injection molding process.

[0013] This utility model also proposes a threaded assembly. The technical problem solved by this utility model is that the threaded screw and threaded nut are not easy to loosen after being screwed together.

[0014] A threaded assembly, characterized in that it includes a threaded screw and a threaded nut, wherein the threaded screw includes a fixed thread section, a threaded section, and a limiting section, the threaded section being screwed into the internal thread of the threaded nut, and the limiting section being inserted into a damping sleeve with its outer peripheral surface tightly fitting against the first and second contact surfaces of the damping sleeve.

[0015] After the limiting section of the threaded screw comes into contact with the damping sleeve, the friction between the two provides additional circumferential resistance, making it less likely for the threaded screw and threaded nut to loosen after being screwed together.

[0016] This utility model also proposes a billiard cue, and the technical problem solved by this utility model is that the main cue and the extension cue will not become loose during rotation.

[0017] A billiard cue, characterized in that it comprises a main cue, an extension cue, and a threaded assembly, wherein the threaded nut of the threaded assembly is screwed to the main cue, and the threaded section of the threaded screw of the threaded assembly is screwed to the extension cue. This structure prevents the main cue and extension cue from loosening during use.

[0018] Compared with existing technologies, this billiard cue has the advantage of not loosening during use due to its screw-in connection that prevents loosening after screwing. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of this billiard cue.

[0020] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0021] Figure 3 This is a three-dimensional structural diagram of the connector assembly.

[0022] Figure 4 This is a front view schematic diagram of the threaded screw.

[0023] Figure 5 This is a three-dimensional structural diagram of a threaded nut.

[0024] Figure 6 This is a cross-sectional view of the threaded nut.

[0025] Figure 7 This is a cross-sectional structural diagram of the main body of the threaded nut.

[0026] Figure 8 This is a three-dimensional structural diagram of the damping sleeve.

[0027] In the diagram, 1. Main rod; 11. Extension rod; 2. Threaded screw; 21. Fixed threaded section; 22. Threaded section; 23. Limiting section; 3. Threaded nut; 31. Main body; 32. Inner hole; 33. External thread; 34. Internal thread; 35. Inset groove; 36. Raised ring; 37. Positioning hole; 4. Damping sleeve; 41. Contact surface one; 42. Contact surface two; 43. Contact surface three; 44. Positioning part; 45. Limiting part. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1 and Figure 2 As shown, the billiard cue includes a main cue 1, an extension cue 11, and a threaded assembly. The threaded assembly includes a threaded screw 2 and a threaded nut 3. The threaded screw 2 includes a fixed threaded section 21, a threaded section 22, and a limiting section 23. The threaded nut 3 includes a cylindrical body 31 with an external thread 33 on its outer side and an internal thread 34 in its inner hole 32. A damping sleeve 4 is fixedly installed at the inner end of the internal thread 34 in the inner hole 32. The external thread 33 of the threaded nut 3 is screwed and fixed to the main cue 1. The fixed threaded section 21 of the threaded screw 2 is screwed and fixed to the extension cue 11. The threaded section 22 is screwed to the internal thread 34 of the threaded nut 3. The limiting section 23 is inserted into the damping sleeve 4.

[0030] like Figures 3 to 8As shown, the damping sleeve 4 is made of silicone or rubber; in this embodiment, it is made of silicone. The damping sleeve 4 has a cylindrical contact surface 41 and a frustum-shaped contact surface 42. The inner bottom surface of the damping sleeve 4 is a hemispherical contact surface 43. The outer circumferential surface of the limiting section 23 of the threaded screw 2 is tightly fitted with the contact surfaces 41 and 42 of the damping sleeve 4, and the end face of the limiting section 23 is tightly fitted with the contact surface 43. After the threaded screw 2 and the threaded nut 3 are screwed together, the contact surface 41 provides coaxial positioning and friction, and the limiting section 23 of the threaded screw 2 presses against the contact surfaces 42 and 43. The damping sleeve 4 will... Due to compression deformation, the friction between the second contact surface 42 and the third contact surface 43 and the threaded screw 2 increases. Combined with the friction provided by the first contact surface 41, the damping sleeve 4 can provide greater resistance to the threaded screw 2 in the circumferential direction, thereby preventing the threaded screw 2 and the threaded nut 3 from rotating relative to each other during daily use, which would cause the main rod 1 to rotate and loosen relative to the extension rod 11, ensuring that the main rod 1 and the extension rod 11 are firmly connected. At the same time, when a large force is applied to rotate the extension rod 11, the resistance between the damping sleeve 4 and the threaded screw 2 can be overcome, and the extension rod 11 can be disassembled from the main rod 1.

[0031] An inner groove 35 is formed on a section of the inner hole 32 located inside the internal thread 34, and the damping sleeve 4 is engaged in the inner groove 35. A convex ring 36 is provided at the end of the inner hole 32 away from the internal thread 34. The inner hole 32 of the convex ring 36 is a positioning hole 37. The positioning hole 37 is a non-circular hole. Specifically, the positioning hole 37 can be a polygonal hole, an elliptical hole, or an internal gear ring-shaped hole. In this embodiment, the positioning hole 37 is a polygonal hole. A positioning part 44 is provided at the end of the damping sleeve 4. The outer peripheral surface of the positioning part 44 matches the positioning hole 37, and the positioning part 44 passes through the positioning hole 37. A limiting part 45 is also provided at the outer end of the positioning part 44, and the convex ring 36 is located between the limiting part 45 and the end of the damping sleeve 4. The above structure can completely fix the damping sleeve 4 to the main body 31.

[0032] The damping sleeve 4 is formed by injection molding. During processing, the threaded nut 3 is fixed, and the end of the inner hole 32 corresponding to the external thread 33 extends into the mold. An injection cavity is formed between the mold and the main body. Silicone is injected into the injection cavity from the other end of the inner hole 32. After cooling, the damping sleeve 4 is formed, thus realizing the forming of the damping sleeve 4 inside the threaded nut 3. This process is the existing process.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A threaded nut, comprising a cylindrical body (31), wherein the outer side of the body (31) is provided with an external thread (33), and the inner hole (32) of the body (31) is provided with an internal thread (34), characterized in that, A damping sleeve (4) is fixedly provided at the inner end of the inner hole (32) located on the inner thread (34).

2. The threaded nut according to claim 1, characterized in that, The damping sleeve (4) is made of silicone or rubber.

3. The threaded nut according to claim 1, characterized in that, The damping sleeve (4) has a first contact surface (41) that is cylindrical and a second contact surface (42) that is frustum.

4. The threaded nut according to claim 1, 2, or 3, characterized in that, An inset groove (35) is provided on a section of the inner hole (32) located inside the internal thread (34), and the damping sleeve (4) is engaged in the inset groove (35).

5. The threaded nut according to claim 1, 2, or 3, characterized in that, The inner hole (32) is provided with a positioning hole (37) at one end away from the internal thread (34). The positioning hole (37) is a non-circular hole. The end of the damping sleeve (4) is provided with a positioning part (44). The outer circumferential surface of the positioning part (44) matches the positioning hole (37). The positioning part (44) passes through the positioning hole (37).

6. The threaded nut according to claim 5, characterized in that, The positioning hole (37) is a polygonal hole, an elliptical hole, or an internal toothed ring hole.

7. The threaded nut according to claim 5, characterized in that, The inner hole (32) is provided with a convex ring (36) at one end away from the internal thread (34). The inner hole (32) of the convex ring (36) is the aforementioned positioning hole (37). The outer end of the positioning part (44) is also provided with a limiting part (45). The convex ring (36) is located between the limiting part (45) and the end of the damping sleeve (4).

8. The threaded nut according to claim 1, 2, or 3, characterized in that, The damping sleeve (4) is formed by injection molding.

9. A connector assembly, characterized in that, Includes a threaded screw (2) and a threaded nut (3) as described in any one of claims 1 to 8. The threaded screw (2) includes a fixed thread section (21), a threaded section (22), and a limiting section (23). The threaded section (22) can be screwed into the internal thread (34) of the threaded nut (3). The limiting section (23) is inserted into the damping sleeve (4), and the outer peripheral surface of the limiting section (23) is in close contact with the first contact surface (41) and the second contact surface (42) of the damping sleeve (4).

10. A billiard cue, characterized in that, It includes a main rod (1), an extension rod (11) and the threaded assembly as described in claim 9, wherein the threaded nut (3) of the threaded assembly is screwed to the main rod (1) and the threaded section (21) of the threaded screw (2) of the threaded assembly is screwed to the extension rod (11).

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