Nut, screw and fastening assembly

Abstract

The utility model discloses a nut, screw and fastening assembly, relates to the fixed part technical field, screw, including head and post portion, the head is equipped with a plurality of annularly spliced lip lobes, forms the first groove between every two adjacent lip lobes, and the post portion is equipped with the second groove between every two adjacent lip lobes. The column rod part comprises a straight rod part integrally connected with the head part, a plurality of connecting parts arranged on the straight rod part at intervals in the axial direction and a conical head part, each connecting part comprises a guide conical part and a clamping table connected to the large end of the guide conical part, the bottommost guide conical part is connected with the conical head part, a boss is arranged in the nut, and the boss is matched with the clamping table. The boss can be connected to the clamping table in a clamped mode. The head part is provided with a plurality of annularly spliced lip flaps, and a first groove is formed between every two adjacent lip flaps. The fastening assembly comprises a screw and a nut which can be matched with each other for clamping connection. The utility model has the characteristics of easy and labor-saving installation, firm connection and low production cost.

Description

Technical Field

[0001] This utility model relates to the field of fixing parts technology, specifically to a nut, screw and fastening assembly. Background Technology

[0002] Screws and nuts are widely used fasteners, and traditionally, they require a wrench or screwdriver for installation. However, this is often inefficient in confined spaces or when handling large-scale assembly tasks. Furthermore, structures that rely solely on friction for fixation are prone to loosening over time, making it difficult to ensure the long-term stability of these components.

[0003] Therefore, it is particularly necessary to improve and optimize the existing structure. Utility Model Content

[0004] In view of this, the present invention provides a nut, screw and fastening assembly to solve the technical problems that traditional screws and nuts require the use of a wrench or screwdriver for installation, which is inefficient in confined spaces or batch assembly scenarios; furthermore, structures that rely solely on friction for fixation are prone to loosening and cannot meet the long-term use requirements of parts.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A screw, comprising:

[0007] The head has several ring-shaped spliced ​​lip flaps, with a first groove formed between two adjacent lip flaps, and the lip flaps and the first groove are alternately distributed in a ring shape;

[0008] The column rod portion includes a straight rod portion integrally connected to the head, a plurality of connecting portions spaced axially on the straight rod portion, and a conical head. Each connecting portion includes a guide cone portion and a snap-fit ​​platform connected to the large end of the guide cone portion. The lowermost guide cone portion is connected to the conical head.

[0009] Furthermore, the guide cone includes a smooth section and a tapered transition section connected in sequence. The smooth section has the same diameter at both ends, and the diameter of the tapered transition section increases from bottom to top. The snap-fit ​​platform is connected to the upper end of the corresponding tapered transition section.

[0010] Furthermore, the card holder has rounded corners.

[0011] Furthermore, the fillet radius of the card slot is 0.5-2mm.

[0012] A nut that mates with a screw, wherein the nut has an internal mounting hole and a protruding boss is provided in the mounting hole, and the inner diameter of the boss is interference-fitted with the outer diameter of the locking platform.

[0013] Furthermore, the outer side of the nut is provided with several annularly distributed second grooves.

[0014] A fastening assembly, comprising:

[0015] Screws;

[0016] Nut;

[0017] The guide cone of the screw passes through the mounting hole of the nut, and the boss engages with the locking platform to form a surface contact lock.

[0018] Furthermore, both the screw and the nut are injection molded from plastic granules.

[0019] As can be seen from the above technical solution, the advantages of this utility model are:

[0020] 1. In this utility model, the installation and disassembly of screws and nuts do not require special tools. Installation and separation can be achieved by tapping, which is convenient to operate and can better meet the installation needs of narrow spaces, and has the characteristics of high installation efficiency.

[0021] 2. In this utility model, the screw and nut are connected by a snap-fit ​​method, which makes the installation more secure. The shank of the screw is composed of multiple snap-fit ​​sections. Each snap-fit ​​section consists of a guide column section, a tapered transition section and a snap-fit ​​platform, forming a three-section variable diameter structure, which can achieve bidirectional anti-loosening.

[0022] 3. In this utility model, the screws and nuts are manufactured by injection molding, which is suitable for mass production and has the characteristics of high processing efficiency and low cost. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 This is a front view of the screw of this utility model.

[0025] Figure 2 for Figure 1 A three-dimensional image.

[0026] Figure 3 This is a perspective view of the nut of this utility model.

[0027] Figure 4 for Figure 3 The front view.

[0028] Figure 5 for Figure 4 CC section view.

[0029] Figure 6 for Figure 4 BB cross-sectional view.

[0030] Figure 7 This is a schematic diagram of the fastening component of this utility model.

[0031] Figure 8 for Figure 7 A three-dimensional image.

[0032] Figure 9 for Figure 7 A sectional view.

[0033] Figure 10 for Figure 8 Assembly diagram.

[0034] Figure 11 This is a schematic diagram of the structure of this utility model in use.

[0035] Explanation of reference numerals in the attached drawings: 1-Screw; 11-Head; 111-First groove; 112-Lip; 12-Post section; 121-Straight rod section; 122-Connecting part; 1222-Snap-fit ​​platform; 1221-Guide cone section; 123-Cone head; 2-Nut; 21-Second groove; 22-Mounting hole; 23-Boss. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0037] refer to Figures 1 to 2 ,like Figure 1 and Figure 2 As shown, this embodiment provides a screw 1, which includes a head 11 and a shank 12 manufactured by integral injection molding. The head 11 is flat and plate-shaped, while the shank 12 is cylindrical. The head 11 has several annularly joined lips 112, with a first groove 111 between adjacent lips 112. The lips 112 and the first groove 111 are alternately distributed in annular patterns. The plane of the lips 112 resembles flower petals, which not only makes the design aesthetically pleasing and decorative, but also enhances the anti-slip effect by cooperating with the first groove 111, making it easier to grip the head 11. Therefore, the head 11 of this invention not only meets the requirements of ergonomic grip but also forms a decorative texture through light and shadow refraction, achieving a beautiful decorative effect.

[0038] The column rod portion 12 includes a straight rod portion 121, several connecting portions 122, and a conical head 123 connected in sequence. The head 11 is integrally connected to the straight rod portion 121. The several connecting portions 122 are spaced apart along the axial direction of the column rod portion 12. Each connecting portion 122 has the same structure and dimensions, and each connecting portion 122 includes a guide cone portion 1221 and a retaining platform 1222 connected to the large end of the guide cone portion 1221. The lowermost guide cone portion 1221 is connected to the conical head 123. The diameter of the conical head 123 is also larger at the top and smaller at the bottom, so that the lower end of the conical head 123 forms an anti-disengagement chamfer.

[0039] The guide cone 1221 consists of a smooth section and a tapered transition section. The diameter of the smooth section is the same from bottom to top, while the diameter of the tapered transition section increases from bottom to top. The locking platform 1222 is connected to the upper end of the corresponding tapered transition section. The locking platform 1222 has rounded corners with a radius of 0.5-2mm to engage with the nut 2. This three-section variable diameter structure of smooth section, tapered transition section and locking platform 1222 can achieve a two-way anti-loosening effect.

[0040] refer to Figures 3 to 6 ,like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment also provides a nut that can mate with a screw. The nut 2 has an internal mounting hole 22, and the anti-disengagement chamfer design allows the mounting hole 22 to easily fit onto the conical head 123, enabling quick positioning and installation of the nut 2. Furthermore, the mounting hole 22 has a protruding boss 23 inside. The inner diameter of the boss 23 can be interference-fitted with the outer diameter of the corresponding locking platform 1222, achieving mutual locking and forming a surface contact lock. This structure ensures ease of installation while providing a two-way anti-loosening function. After 3000 cycles of vibration testing, there was no loosening, ensuring a secure connection between the nut 2 and the screw 1. For easy handling, several annularly distributed second grooves 21 are provided on the outer side of the nut 2, conforming to an ergonomic grip curve.

[0041] refer to Figures 7 to 11 ,like Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, this embodiment also provides a fastening assembly, which mainly consists of a screw 1 and a nut 2, and can be used to fix a mop (see reference). Figure 11 In use, first connect the two parts (part one and part two) that need to be fixed with screw 1. Then, put nut 2 on the guide cone 1221 and gently tap nut 2 with a hammer or other tool to achieve engagement between boss 23 and locking platform 1222 (see reference). Figure 10During disassembly, a light tap on the column rod 12 will separate the screw 1 from the nut 2. This tapping method makes operation convenient and effortless, achieving impact-responsive decoupling and increasing work efficiency by 60%. It eliminates the need for specialized tools such as wrenches, fully meeting requirements even in large-scale installations and confined spaces. Therefore, it is highly practical and suitable for long-term widespread use. Furthermore, both screw 1 and nut 2 are made of lightweight plastic granules, allowing for modular mass production via injection molding. Mass production offers advantages such as high efficiency and low cost, while modular production supports rapid changeover. Due to the multiple snap-fit ​​sections, this invention can be used to fix parts of different thicknesses, offering ease of use and high flexibility.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw, characterized in that, include: The head (11) has a plurality of ring-jointed lip flaps (112) on it, and a first groove (111) is formed between two adjacent lip flaps (112). The lip flaps (112) and the first groove (111) are alternately distributed in a ring. The column rod (12) includes a straight rod (121) integrally connected to the head (11), a plurality of connecting parts (122) spaced axially on the straight rod (121), and a cone head (123). Each connecting part (122) includes a guide cone (1221) and a snap-fit ​​platform (1222) connected to the large end of the guide cone (1221). The lowermost guide cone (1221) is connected to the cone head (123).

2. The screw according to claim 1, characterized in that, The guide cone (1221) includes a smooth section and a tapered transition section connected in sequence. The smooth section has the same diameter at the top and bottom, and the diameter of the tapered transition section increases from bottom to top. The snap-fit ​​platform (1222) is connected to the upper end of the corresponding tapered transition section.

3. The screw according to claim 1, characterized in that, The card holder (1222) has rounded corners.

4. The screw according to claim 3, characterized in that, The fillet radius of the card slot (1222) is 0.5-2mm.

5. A nut that mates with the screw according to any one of claims 1 to 4, characterized in that, The nut (2) has an internal mounting hole (22) and a protruding boss (23) inside the mounting hole (22). The inner diameter of the boss (23) is interference-fitted with the outer diameter of the snap-fit ​​platform (1222).

6. The nut according to claim 5, characterized in that, The nut (2) has several annularly distributed second grooves (21) on its outer side.

7. A fastening assembly, characterized in that, include: The screw (1) as described in any one of claims 1 to 4; and the nut (2) as described in any one of claims 5 to 6; The guide cone (1221) of the screw (1) passes through the mounting hole (22) of the nut (2), and the boss (23) engages with the locking platform (1222) to form a surface contact lock.

8. The fastening assembly according to claim 7, characterized in that, Both the screw (1) and the nut (2) are injection molded from plastic granules.

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