Stainless steel screw

Abstract

The utility model discloses a stainless steel screw which comprises a nut portion and a screw portion, and the nut portion is connected to one end of the screw portion. The nut part is provided with an arc-shaped connecting face, and the arc-shaped connecting face is arranged at the end, opposite to the screw part, of the nut part. The arc-shaped connecting face comprises a first arc face and a second arc face, the first arc face is arranged in the middle of the end face of the nut part, the second arc face is arranged on the periphery of the first arc face, and the first arc face and the second arc face are connected to form a continuous and uniform transition complete arc face. After the stainless steel screw is embedded into a preset fastening site, the matching degree between the nut part and a plastic part can be improved through the arc-shaped connecting face on the end face of the nut part, and then the connecting stability and durability between the nut part and the plastic part are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a stainless steel screw. Background Art

[0002] A screw is a mechanical fastener used to fasten objects together. It is usually made of metal, with a threaded shank and a top with a variety of head shapes. The screw can be rotated to embed the threads of the shank into the material, creating a fastening effect. The shank of the screw has threads, which can be external threads (for embedding into the material) or internal threads (on the nut). The head of the screw has a variety of shapes, such as flat head, round head, hexagonal head, etc. Different head shapes are suitable for different tools and uses. Common screw materials include steel, stainless steel, brass and aluminum, and different materials provide different strength and corrosion resistance. Screws can be driven by a variety of tools, including screwdrivers, wrenches, drills, etc. Common drive types include Phillips, Slotted, Hex, etc.

[0003] After the stainless steel screw is inserted into the preset fastening position, a plastic part needs to be sleeved on the nut part. The inner wall of the plastic part is generally set to an arc surface, which cooperates with the nut part to seal and protect the stainless steel screw, while preventing external objects from hitting and rotating the stainless steel screw and affecting the fastening stability of the stainless steel screw. However, the existing stainless steel screws usually have a low degree of fit between the nut part and the corresponding plastic part, so that the plastic part sleeved on the surface of the nut part is easy to loosen and fall off, resulting in insufficient protection of the screw by the plastic part. Utility Model Content

[0004] Based on this, it is necessary to provide a stainless steel screw to address the technical problem that the nut portion of the existing stainless steel screw has a low degree of fit with the corresponding plastic part.

[0005] A stainless steel screw comprises a nut part and a screw part, wherein the nut part is connected to one end of the screw part. Specifically, the nut part is provided with an arc-shaped connecting surface, and the arc-shaped connecting surface is arranged at one end of the nut part facing away from the screw part.

[0006] The arc connecting surface includes a first arc surface and a second arc surface. The first arc surface is arranged at the middle of the end surface of the nut portion, and the second arc surface is arranged at the periphery of the first arc surface. The first arc surface and the second arc surface are connected to form a complete arc surface with continuous and uniform transition.

[0007] In one embodiment, the specific configuration of the first arc surface and the second arc surface can be adjusted accordingly according to the inner wall structure of the external plastic part, thereby improving the fit between the nut part and the plastic part and effectively improving the limiting function of the arc connection surface on the plastic part.

[0008] In one embodiment, the first arc surface is configured as a quasi-partial spherical surface with rounded edges.

[0009] In one embodiment, the second arc surface is configured as a hollow annular arc surface.

[0010] In one embodiment, the nut portion is further provided with a matching groove, which is provided at an end of the nut portion facing away from the screw portion, that is, the matching groove is provided at the end of the nut portion provided with the arc-shaped connecting surface.

[0011] In one embodiment, the above-mentioned matching groove has an arc-shaped connecting surface opening and is sunken inward to a preset depth toward the screw portion to form a matching groove body.

[0012] In one embodiment, the above-mentioned mating groove can be matingly connected with the inner wall of the plastic part, thereby further improving the connection stability between the nut portion and the plastic part. At the same time, the mating groove can also be used to be matingly connected with an external driving mechanism (such as a screwdriver), so that the screwdriver can drive the stainless steel screw to rotate through the mating groove to screw in or out of the preset fastening position.

[0013] In one embodiment, the above-mentioned matching groove is configured as a straight groove body.

[0014] In one embodiment, the above-mentioned matching groove is configured as a cross-shaped groove body.

[0015] In one embodiment, the screw portion includes a connecting end and a threaded end, wherein the connecting end is arranged at one end of the screw portion and the threaded end is arranged at the other end of the screw portion; and an end surface of the connecting end is connected to the nut portion.

[0016] In one of the embodiments, the threaded end is provided with an external thread, and the external thread extends from the end of the threaded end toward the connecting end by a preset distance, thereby forming an external thread structure of a preset size.

[0017] In summary, after the stainless steel screw disclosed in the utility model is embedded in the preset fastening position, the arc-shaped connecting surface of the end face of the nut portion can improve the fit between the nut portion and the plastic part, thereby improving the connection stability and durability between the nut portion and the plastic part, and then the nut portion is sealed and protected by a plastic part, while preventing external objects from hitting and rotating the stainless steel screw and affecting the fastening stability of the stainless steel screw. The arc-shaped connecting surface includes a first arc surface and a second arc surface. The specific settings of the first arc surface and the second arc surface can be adjusted accordingly according to the inner wall structure of the external plastic part. While improving the fit between the nut portion and the plastic part, the limiting function of the arc-shaped connecting surface on the plastic part is effectively improved. Specifically, through the respective fit between the first arc surface, the second arc surface and the inner wall of the plastic part, relative sliding between the plastic part and the arc-shaped connecting surface can be effectively avoided, thereby further improving the connection stability between the plastic part and the nut portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a stainless steel screw in an embodiment;

[0019] Figure 2 for Figure 1 A schematic structural diagram of the stainless steel screw from another perspective in the illustrated embodiment. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "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 higher in level than the second feature. A first feature being "below", "below" or "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 lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] See also Figure 1 and Figure 2The utility model discloses a stainless steel screw 100, which includes a nut portion 110 and a screw portion 120. The nut portion 110 is connected to one end of the screw portion 120. Specifically, the nut portion 110 is provided with an arc-shaped connecting surface 111, which is provided at one end of the nut portion 110 facing away from the screw portion 120. In practical applications, after the stainless steel screw 100 is embedded in a preset fastening position, the nut portion 110 needs to be sleeved with a plastic part. The inner wall of the plastic part is generally provided with an arc surface, which cooperates with the nut portion 110 to seal and protect the stainless steel screw 100, and at the same time prevents external objects from hitting or rotating the stainless steel screw 100 and affecting the fastening stability of the stainless steel screw 100. The arc-shaped connecting surface 111 on the end face of the nut portion 110 can improve the matching degree between the nut portion 110 and the plastic part, thereby improving the connection stability and durability between the nut portion 110 and the plastic part.

[0027] See also Figure 1 and Figure 2 Furthermore, the arc-shaped connecting surface 111 includes a first arc surface 1111 and a second arc surface 1112. The first arc surface 1111 is arranged at the middle of the end surface of the nut portion 110, and the second arc surface 1112 is arranged at the periphery of the first arc surface 1111. The first arc surface 1111 and the second arc surface 1112 are connected to form a complete arc surface with a continuous and uniform transition. In practical applications, the specific arrangement of the first arc surface 1111 and the second arc surface 1112 can be adjusted accordingly according to the inner wall structure of the external plastic part, and the limiting function of the arc-shaped connecting surface 111 on the plastic part is effectively improved while improving the matching degree between the nut portion 110 and the plastic part. Specifically, through the respective matching between the first arc surface 1111, the second arc surface 1112 and the inner wall of the plastic part, the relative sliding between the plastic part and the arc-shaped connecting surface 111 can be effectively avoided, thereby further improving the connection stability between the plastic part and the nut portion 110. In one embodiment, the first arc surface 1111 is configured as a quasi-partial spherical surface with rounded edges; in one embodiment, the second arc surface 1112 is configured as a hollow annular arc surface.

[0028] See also Figure 1 and Figure 2Furthermore, the nut portion 110 is also provided with a matching groove 112, and the matching groove 112 is provided at one end of the nut portion 110 facing away from the screw portion 120, that is, the matching groove 112 is provided at the end of the nut portion 110 provided with the arc-shaped connecting surface 111. Specifically, the matching groove 112 has an arc-shaped connecting surface 111 opening, and is sunken inward to a preset depth toward the screw portion 120 to form a matching groove 112 groove body. In practical applications, the matching groove 112 can be matched and connected with the inner wall of the plastic part, thereby further improving the connection stability between the nut portion 110 and the plastic part. At the same time, the matching groove 112 can also be used for matching and connecting with an external driving mechanism (such as a screwdriver), so that the screwdriver can drive the stainless steel screw 100 to rotate through the matching groove 112 to screw in or out of the preset fastening position. In this embodiment, the matching groove 112 is set as a straight groove body; in another embodiment, the matching groove 112 is set as a cross-shaped groove body.

[0029] See also Figure 1 and Figure 2 Further, the screw part 120 includes a connection end 121 and a threaded end 122, wherein the connection end 121 is disposed at one end of the screw part 120, and the threaded end 122 is disposed at the other end of the screw part 120; the end surface of the connection end 121 is connected to the nut part 110. Specifically, the threaded end 122 is provided with an external thread, and the external thread extends from the end of the threaded end 122 toward the connection end 121 by a preset distance, thereby forming an external thread structure of a preset size. In practical applications, the stainless steel screw 100 is fastened with a preset matching fastening position through the external thread.

[0030] In summary, after the stainless steel screw disclosed in the utility model is embedded in the preset fastening position, the arc-shaped connecting surface of the end face of the nut portion can improve the fit between the nut portion and the plastic part, thereby improving the connection stability and durability between the nut portion and the plastic part, and then the nut portion is sealed and protected by a plastic part, while preventing external objects from hitting and rotating the stainless steel screw and affecting the fastening stability of the stainless steel screw. The arc-shaped connecting surface includes a first arc surface and a second arc surface. The specific settings of the first arc surface and the second arc surface can be adjusted accordingly according to the inner wall structure of the external plastic part. While improving the fit between the nut portion and the plastic part, the limiting function of the arc-shaped connecting surface on the plastic part is effectively improved. Specifically, through the respective fit between the first arc surface, the second arc surface and the inner wall of the plastic part, relative sliding between the plastic part and the arc-shaped connecting surface can be effectively avoided, thereby further improving the connection stability between the plastic part and the nut portion.

[0031] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A stainless steel screw, characterized in that: include: A nut portion and a screw portion, wherein the nut portion is connected to one end of the screw portion; The nut portion is provided with an arc-shaped connecting surface, and the arc-shaped connecting surface is provided at one end of the nut portion facing away from the screw portion; The arc-shaped connecting surface includes a first arc surface and a second arc surface. The first arc surface is arranged in the middle of the end surface of the nut portion, and the second arc surface is arranged on the periphery of the first arc surface. The first arc surface and the second arc surface are connected to form a complete arc surface with a continuous and uniform transition.

2. The stainless steel screw according to claim 1, characterized in that: The first arc surface is configured as a quasi-partial spherical surface with rounded edges.

3. The stainless steel screw according to claim 2, characterized in that: The second arc surface is configured as a hollow annular arc surface.

4. The stainless steel screw according to claim 3, characterized in that: The nut portion is further provided with a matching groove, and the matching groove is arranged at one end of the nut portion facing away from the screw portion.

5. The stainless steel screw according to claim 4, characterized in that: The matching groove has an arc-shaped connecting surface opening and is sunken inwardly to a preset depth toward the screw portion to form the matching groove body.

6. The stainless steel screw according to claim 5, characterized in that: The matching groove is configured as a straight groove body.

7. The stainless steel screw according to claim 5, characterized in that: The matching groove is configured as a cross-shaped groove body.

8. The stainless steel screw according to claim 5, characterized in that: The screw portion includes a connecting end and a threaded end, wherein the connecting end is arranged at one end of the screw portion, and the threaded end is arranged at the other end of the screw portion.

9. The stainless steel screw according to claim 8, characterized in that: The end surface of the connecting end is connected to the nut portion.

10. The stainless steel screw according to claim 9, characterized in that: The threaded end is provided with an external thread, and the external thread extends from the end of the threaded end toward the connecting end by a preset distance, thereby forming the external thread structure of a preset size.

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