Adjusting knob rod and anti-falling screw assembly

Abstract

The utility model discloses an adjusting knob rod and an anti-falling screw rod assembly, the adjusting knob rod comprises a screw rod and a screw cap arranged at one end part of the screw rod, the screw rod comprises a thread part and a flanging part, and the flanging part is arranged at the other end, far away from the screw cap, of the screw rod; the size of the flanging part before flanging processing is not greater than the inner diameter of the thread part, and the size after flanging processing is greater than the outer diameter of the thread part. The anti-falling screw assembly comprises the adjusting knob rod and a plug, a threaded hole channel is formed in the middle of the plug, the threaded part is in threaded connection fit with the threaded hole channel, and the nut and the flanging part are arranged on the two sides of the plug respectively. The structure is simple, the turnup part is arranged at one end of the screw, the adjusting knob rod can be prevented from being separated from the plug, the length of the threaded part is larger than that of the threaded hole channel, and the adjusting function is still achieved while it is guaranteed that the adjusting knob rod cannot be completely screwed out.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fastener, specifically relates to an adjusting knob lever and anti -drop screw rod assembly. BACKGROUND

[0002] At present, in the industrial production practice, it is usually necessary to connect in a large number of threaded screw connection mode. But the existing adjusting knob and plug only simply screw cooperation is used, the main defect is: in the transportation and use process, it is easy to fall off, causes the adjusting knob to lose, causes the product use defect, and the customer experience is poor. CONTENT OF UTILITY MODEL

[0003] In order to make up for the deficiency of prior art, the utility model purposes at providing an adjusting knob lever and anti -drop screw rod assembly to solve the problem that adjusting knob is easy to fall off. To achieve the purpose, the specific technical scheme of the utility model is as follows:

[0004] On the one hand, an adjusting knob lever is provided, including screw rod and the screw cap arranged at the one end of the screw rod, the screw rod includes threaded portion and flange portion, and the flange portion is arranged at the other end of the screw rod away from the screw cap;The size of the flange portion is not greater than the inner diameter of the threaded portion before flange processing, and the size is greater than the outer diameter of the threaded portion after flange processing.

[0005] Further, the flange portion is a hollow cylinder coaxial with the threaded portion.

[0006] Further, the cross section of the hollow cylinder is circular, oval, triangular, rectangular, racetrack type or the combination of the above shapes.

[0007] On the other hand, an anti -drop screw rod assembly is provided, including adjusting knob lever and plug, the adjusting knob lever is the adjusting knob lever described above, the threaded hole is arranged in the middle of the plug, the threaded portion is screwed and cooperated with the threaded hole, and the screw cap and the flange portion are arranged on the two sides of the plug respectively.

[0008] Further, the flange portion is formed by impact after passing through the threaded hole, and the size of the flange is greater than the inner diameter of the threaded hole.

[0009] Further, the plug includes plug cover and plug sleeve, the end away from the plug cover of the plug sleeve is hollow cylinder, the threaded hole is arranged through the plug cover and plug sleeve, the screw cap is arranged on the side of the plug cover, and the flange portion is arranged in the hollow cylinder.

[0010] Further, the plug is a cylindrical body, and the threaded hole is arranged in the axial middle part of the cylindrical body.

[0011] Further, the plug is a square frame, the threaded hole is arranged in the middle of the square frame, and the reinforcing rib is arranged around the threaded hole in the square frame.

[0012] Furthermore, the screw is made of metal.

[0013] Furthermore, both the nut and the plug are made of plastic.

[0014] Compared with the prior art, the present invention has the following advantages: The present application has a simple structure, and a flange is provided at one end of the screw, which can prevent the adjustment knob rod from coming off the plug. In addition, the length of the threaded part is greater than the length of the threaded hole, so that the adjustment knob rod can not be completely turned out while still having the adjustment function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the adjusting knob rod of this utility model;

[0016] Figure 2 This is a front view of the adjusting knob lever of this utility model;

[0017] Figure 3 This utility model Figure 2 Sectional view of AA;

[0018] Figure 4 This is a schematic diagram of the screw assembly in Embodiment 2 of this utility model;

[0019] Figure 5 This is a front view of the screw assembly in Embodiment 2 of this utility model;

[0020] Figure 6 This utility model Figure 5 BB section view;

[0021] Figure 7 This is a schematic diagram of the screw assembly in Embodiment 3 of this utility model;

[0022] Figure 8 This is a front view of the screw assembly in Embodiment 3 of this utility model;

[0023] Figure 9 This utility model Figure 8 CC section view.

[0024] In the diagram: 1-Adjusting knob rod, 11-Screw rod, 111-Threaded part, 112-Flanged part, 12-Nut, 2-Plug, 20-Threaded channel, 21-Plug cap, 22-Plug sleeve, 23-Reinforcing rib. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model. Example 1

[0026] like Figures 1-3 As shown, this embodiment provides an adjustment knob rod, including a screw 11 and a nut 12 disposed at one end of the screw 11. The screw 11 includes a threaded portion 111 and a flanged portion 112. The flanged portion 112 is disposed at the other end of the screw 11 away from the nut 12. Before the flanged processing, the size of the flanged portion is not greater than the inner diameter of the threaded portion 111, and after the flanged processing, the size is greater than the outer diameter of the threaded portion 111.

[0027] The flanged portion 112 is a hollow cylinder coaxial with the threaded portion 111. The cross-section of the hollow cylinder is circular, elliptical, triangular, rectangular, racetrack-shaped, or a combination of the above shapes. Example 2

[0028] like Figures 4-6 As shown, this embodiment provides an anti-detachment screw assembly, including an adjusting knob 1 and a plug 2. The adjusting knob 1 is the adjusting knob described above. The plug 2 has a threaded hole 20 in the middle, and the threaded part 111 is screwed into the threaded hole 20. The nut 12 and the flanged part 112 are respectively placed on both sides of the plug 2. The screw 11 is preferably made of metal. The nut 12 and the plug 2 are preferably made of plastic.

[0029] Specifically, the flanged part 112 is a hollow cylinder that passes through the threaded channel 20 and is impacted to form a flange. The size of the flange is larger than the inner diameter of the threaded channel 20. After the adjusting knob rod 1 is inserted into the threaded channel 20, it impacts the flanged part 112 of the screw 11 vertically through the punch. The hollow cylindrical part of the flanged part 112 is squeezed by external force and deformed along the punch pattern to form a flanged effect, thereby preventing the plug 2 from falling off the screw 11.

[0030] The plug 2 of this application includes a plug cap 21 and a plug sleeve 22. The end of the plug sleeve 22 away from the plug cap 21 is a hollow cylinder. A threaded channel 20 is provided through the plug cap 21 and the plug sleeve 22. A nut 12 is placed on one side of the plug cap 21, and a flanged portion 112 is placed inside the hollow cylinder. In this embodiment, the plug 2 is a cylinder, and a threaded channel 20 is provided in the axial center of the cylinder.

[0031] This application improves the screw 11 so that the plug 2 cannot be unscrewed, preventing the plug 2 from falling off. The adjusting knob 1 is fully turned into the hollow cylinder of the embedded plug 2, nut 12, and flanged portion 112 of the screw 11 (e.g., Figures 1-3 As shown, on both sides of the plug 2, the hollow cylinders form a flanged structure after being impacted by the punch (as shown). Figure 6As shown in the figure, the flange size is larger than the maximum diameter of the internal thread of the plug 2, so that the adjustment knob 1 cannot be completely turned out, while still having the adjustment function. Example 3

[0032] like Figures 7-9 As shown, the difference between this embodiment and Embodiment 2 lies in the structure of the plug 2. In this embodiment, the plug 2 is a square frame, the threaded channel 20 is disposed in the middle of the square frame, and the square frame is provided with reinforcing ribs 23 around the threaded channel 20.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjusting knob lever comprising a screw rod (11) and a screw nut (12) provided at one end of the screw rod (11), characterized in that, The screw rod (11) comprises a threaded part (111) and a flange part (112), the flange part (112) is arranged at the other end of the screw rod (11) away from the screw cap (12); the size of the flange part before flanging is not greater than the inner diameter of the threaded part (111), and the size of the flange part after flanging is greater than the outer diameter of the threaded part (111).

2. An adjustment knob stem as defined in claim 1, wherein, The flange part (112) is a hollow cylinder coaxial with the threaded part (111).

3. An adjustment knob stem as defined in claim 2, wherein, The cross section of the hollow cylinder is circular, oval, triangular, rectangular, racetrack-shaped or a combination of the above shapes.

4. An anti-loosening screw assembly comprising an adjustment knob stem (1) and a plug (2), characterized in that, The plug (2) comprises a threaded hole (20) arranged in the middle of the plug (2), the threaded part (111) is screwed with the threaded hole (20), and the screw cap (12) and the flange part (112) are arranged on the two sides of the plug (2) respectively.

5. A retention screw assembly according to claim 4, wherein, The flange part (112) is formed by impact after passing through the threaded hole (20), and the size of the flange is greater than the inner diameter of the threaded hole (20).

6. An anti-backout screw assembly according to claim 5, wherein, The plug (2) comprises a plug cover (21) and a plug sleeve (22), one end of the plug sleeve (22) away from the plug cover (21) is a hollow cylinder, the threaded hole (20) is arranged through the plug cover (21) and the plug sleeve (22), the screw cap (12) is arranged on one side of the plug cover (21), and the flange part (112) is arranged in the hollow cylinder.

7. A fall-prevention screw assembly according to claim 6, wherein The plug (2) is a cylindrical body, and a threaded hole (20) is arranged in the axial middle part of the cylindrical body.

8. A retention screw assembly according to claim 6, wherein, The plug (2) is a square frame, the threaded hole (20) is arranged in the middle of the square frame, and a reinforcing rib (23) is arranged around the threaded hole (20) in the square frame.

9. An anti-backout screw assembly according to any one of claims 4-8, wherein, The screw rod (11) is made of metal.

10. An anti-backout screw assembly according to any one of claims 4-8, wherein, The screw cap (12) and the plug (2) are made of plastic.

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