Fastening type screw

Abstract

The utility model discloses a fastening type screw, which comprises a screw rod structure, a screw rod, a screw rod, a screw rod, a screw rod and a screw rod body, and external threads are arranged on the surface of the screw rod structure; the screw rod structure comprises a first embedding part and a second embedding part, and the first embedding part and the second embedding part are communicated in the screw rod structure; the first embedding part is provided with a plurality of first embedding grooves, the first embedding grooves are formed in the end surface of the first embedding part, and each first embedding groove extends towards the second embedding part by a preset distance in the length extending direction of the screw rod structure; the second embedding part is provided with a plurality of second embedding grooves, the second embedding grooves are formed in the side surface of the second embedding part, and each second embedding groove extends by a preset distance towards the axis in the radial direction of the screw rod; the first embedding grooves communicate with the second embedding grooves in a one-to-one correspondence mode. According to the fastening type screw, embedded connection between the fastening type screw and a fastening site is avoided through the first embedded groove and the second embedded groove, and therefore the fastening performance of the fastening type screw is improved.

Description

Technical Field

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

[0002] A screw is a common fastener used to fasten two or more objects together. Screws are usually made of metal, and their basic structure includes a rod with threads and a head. The threaded part enables the screw to rotate and embed into the material, thereby achieving the fastening effect. The main parts of a screw include the head, which is the top part of the screw. It usually has different shapes and designs, such as flat head, round head, countersunk head, etc. The head usually has a drive slot used to rotate the screw into place. The types of drive slots include cross slots, slots, hexagonal slots, etc.; the shank, the main part of the screw, has threads that allow the screw to be rotated and embedded in the material. The threads can be full threads (the threads extend to the entire shank) or half threads (the threads extend to only a part of the shank); the threads, the spiral grooves on the shank, are used to screw the screw into the material and provide fastening force. The type and specification of the threads can vary depending on the application requirements.

[0003] However, the existing screws have limited application scenarios. Only when the screws are matched with the corresponding threaded holes, the screws have high fastening performance, which limits the application scope of the screws. For the fastening positions without corresponding threaded holes, the fastening performance of the screws is insufficient. Utility Model Content

[0004] Based on this, it is necessary to provide a fastening screw to address the technical problems of the limited use range and insufficient fastening performance of existing screws.

[0005] A fastening screw comprises a screw structure, the surface of the screw structure is provided with an external thread, the external thread extends from one end of the screw structure toward the other end by a preset distance; the screw structure comprises a first embedded part and a second embedded part, the first embedded part is provided at one end of the screw structure, the second embedded part is provided at the other end of the screw structure, and the first embedded part and the second embedded part are connected inside the screw structure.

[0006] The first embedded portion is provided with a plurality of first embedded grooves, which are opened on the end surface of the first embedded portion, and each first embedded groove extends a preset distance toward the second embedded portion along the length extension direction of the screw structure; the second embedded portion is provided with a plurality of second embedded grooves, which are opened on the side surface of the second embedded portion, and each second embedded groove extends a preset distance toward the axis along the radial direction of the screw; the plurality of first embedded grooves are respectively connected with the plurality of second embedded grooves in a one-to-one correspondence.

[0007] In one embodiment, the fastening screw further includes a nut structure, and the nut structure is disposed at one end of the screw structure.

[0008] In one embodiment, the nut structure is disposed at an end portion of the second embedded portion.

[0009] In one embodiment, the screw structure further includes a third embedded portion, which is disposed between the first embedded portion and the second embedded portion, and the third embedded portion is disposed on the outside of a plurality of first embedded grooves, that is, each first embedded groove passes through the third embedded portion and is connected to the corresponding second embedded groove.

[0010] In one embodiment, the third embedded portion is provided with a plurality of third embedded grooves, which are respectively arranged on the side surface of the third embedded portion, and each third embedded groove extends a preset distance along the length extension direction of the screw structure.

[0011] In one embodiment, each of the second embedding grooves is provided with a first guiding portion and a first cutting portion, and the first guiding portion and the first cutting portion are provided on two sides of the second embedding groove.

[0012] In one embodiment, the first guide portion is arranged on the side of the second embedded groove that is pointed to by the rotation direction during the screwing-in process; the first cutting portion is arranged on the side of the second embedded groove that is opposite to the rotation direction during the screwing-in process.

[0013] In one embodiment, the third embedding grooves are provided with a second guide portion and a second cutting portion, and the second guide portion and the second cutting portion are provided on both sides of the third embedding grooves.

[0014] In one embodiment, the second guide portion is arranged on the side of the third embedded groove that is pointed to by the rotation direction during the screwing-in process; the second cutting portion is arranged on the side of the third embedded groove that is opposite to the rotation direction during the screwing-in process.

[0015] In one embodiment, the end surface of the first embedded portion facing away from the nut structure is configured as a conical structure.

[0016] In one embodiment, the plurality of second embedded grooves are connected to each other through the interior of the screw structure.

[0017] When the fastening screw of the utility model screws the screw structure into the fastening position that cooperates with it, the external thread is connected with the matching cavity inside the fastening position. At this time, the external thread can effectively limit the axial displacement between the screw structure and the fastening position, so as to achieve the purpose of axial fastening; at the same time, when the inside of the fastening position is a matching surface with poor integrity and low fastening performance, the wall surface of the matching cavity inside the fastening position is embedded in the first embedding part and the second embedding part, thereby further strengthening the bonding strength between the screw structure and the fastening position, so as to achieve the purpose of further limiting the axial, radial displacement and circumferential rotation between the screw structure and the fastening position; for fastening positions with greater fluidity or softness such as gravel surfaces and rubber surfaces, the inner wall material of the matching cavity can be embedded and connected through a plurality of first embedding grooves and a plurality of second embedding grooves, thereby further improving the connection strength between the screw structure and the fastening position, greatly improving the fastening performance of the fastening screw of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a fastening screw in one embodiment;

[0019] Figure 2 for Figure 1 A schematic structural diagram of a fastening screw from another perspective in the illustrated embodiment;

[0020] Figure 3 for Figure 2 A schematic cross-sectional structure diagram of the AA portion in the illustrated embodiment;

[0021] Figure 4 for Figure 2 A schematic cross-sectional structure diagram of the BB portion in the illustrated embodiment;

[0022] Figure 5 for Figure 2 A schematic cross-sectional structure diagram of the CC portion in the illustrated embodiment. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] See also Figures 1 to 5 The utility model discloses a fastening screw 100, which includes a screw structure 110. An external thread 111 is arranged on the surface of the screw structure 110. The external thread 111 extends from one end of the screw structure 110 toward the other end by a preset distance; the screw structure 110 includes a first embedded portion 112 and a second embedded portion 113. The first embedded portion 112 is arranged at one end of the screw structure 110, and the second embedded portion 113 is arranged at the other end of the screw structure 110, and the first embedded portion 112 and the second embedded portion 113 are connected inside the screw structure 110. Specifically, the first embedded portion 112 is provided with a plurality of first embedded grooves a, which are opened on the end surface of the first embedded portion 112, and each first embedded groove a extends a preset distance along the length extension direction of the screw structure 110 toward the second embedded portion 113; the second embedded portion 113 is provided with a plurality of second embedded grooves b, which are opened on the side surface of the second embedded portion 113, and each second embedded groove b extends a preset distance toward the axis along the radial direction of the screw; the plurality of first embedded grooves a are respectively connected with the plurality of second embedded grooves b in a one-to-one correspondence. In actual application, when the screw structure 110 is screwed into the fastening site that matches it, the external thread 111 is connected with the matching cavity inside the fastening site. At this time, the external thread 111 can effectively limit the axial displacement between the screw structure 110 and the fastening site, so as to achieve the purpose of axial fastening; at the same time, when the inside of the fastening site is a matching surface with poor integrity and low fastening performance, the wall of the matching cavity inside the fastening site is embedded in the first embedded part 112 and the second embedded part 113, thereby further strengthening the bonding strength between the screw structure 110 and the fastening site, so as to further limit the axial, radial displacement and circumferential rotation between the screw structure 110 and the fastening site; for fastening sites with greater fluidity or softness such as gravel surfaces and rubber surfaces, the inner wall material of the matching cavity can be embedded and connected through a plurality of first embedded grooves a and a plurality of second embedded grooves b, thereby further improving the connection strength between the screw structure 110 and the fastening site, greatly improving the fastening performance of the fastening screw 100 of the utility model.

[0030] See also Figures 1 to 5Furthermore, the fastening screw 100 further includes a nut structure 120, which is disposed at one end of the screw structure 110. Specifically, the nut structure 120 is disposed at the end of the second embedded portion 113, so that when the fastening screw 100 is actually used, the screw structure 110 can be screwed into a preset fastening position through the nut structure 120, and the first embedded grooves a on the end surface of the first embedded portion 112 are fully utilized to improve the fastening ability of the screw structure 110.

[0031] See also Figures 1 to 5 Furthermore, the screw structure 110 also includes a third embedded portion 114, which is disposed between the first embedded portion 112 and the second embedded portion 113, and the third embedded portion 114 is disposed outside the plurality of first embedded grooves a, that is, each first embedded groove a passes through the third embedded portion 114 and is connected to the corresponding second embedded groove b. Specifically, the third embedded portion 114 is provided with a plurality of third embedded grooves c, which are respectively disposed on the side surfaces of the third embedded portion 114, and each third embedded groove c extends a preset distance along the length extension direction of the screw structure 110. In practical applications, the plurality of third embedded grooves c can further limit the circumferential rotation between the screw structure 110 and the fastening position, thereby further improving the fastening performance of the fastening screw 100.

[0032] See also Figures 1 to 5 Further, each second embedding groove b is provided with a first guide portion b1 and a first cutting portion b2, and the first guide portion b1 and the first cutting portion b2 are provided on both sides of the second embedding groove b along the rotation direction of the screw structure 110 screwed into the fastening position. Specifically, the first guide portion b1 is provided on the side to which the rotation direction of the second embedding groove b is directed during the screwing process; and the first cutting portion b2 is provided on the side of the second embedding groove b that is opposite to the rotation direction during the screwing process. In actual application, when the screw structure 110 rotates relative to the fastening position, the first cutting portion b2 can cut the inner wall of the fastening position, so that the debris particles generated are guided by the first guide portion b1 and embedded into the corresponding second embedding groove b, thereby greatly improving the embedding efficiency of the fastening position in the second embedding groove b. The debris particles embedded in several second embedding grooves b can effectively improve the fastening performance of the screw structure 110. At the same time, when the screw rotates in the opposite direction to screw out of the fastening position, the first guide portion b1 and the first cutting portion b2 can both avoid the inner wall of the fastening position, and the contents in the second embedding groove b can be guided to a certain extent by the first guide portion b1 to avoid it from hindering the screw structure 110 from being screwed out.

[0033] See also Figures 1 to 5Furthermore, a plurality of third embedding grooves c are provided with a second guide portion c1 and a second cutting portion c2, and the second guide portion c1 and the second cutting portion c2 are provided on both sides of the third embedding groove c along the rotation direction of the screw structure 110 when it is screwed into the fastening position. Specifically, the second guide portion c1 is provided on the side to which the rotation direction of the third embedding groove c is directed during the screwing-in process; and the second cutting portion c2 is provided on the side of the third embedding groove c that is opposite to the rotation direction during the screwing-in process. In practical applications, when the screw structure 110 rotates relative to the fastening position, the second cutting portion c2 can cut the inner wall of the fastening position, and the generated debris particles are guided by the second guide portion c1 to be embedded into the corresponding third embedding groove c, thereby improving the embedding efficiency of the fastening position in the third embedding groove c. At the same time, when the screw is rotated out of the fastening position, the second guide portion c1 and the second cutting portion c2 can avoid the inner wall of the fastening position to prevent it from hindering the screw structure 110 from being screwed out.

[0034] See also Figures 1 to 5 Furthermore, the end surface of the first embedded portion 112 facing away from the nut structure 120 is set to a conical structure, thereby improving the screwing efficiency of the first embedded portion 112 on the surface of the fastening site.

[0035] See also Figures 1 to 5 Furthermore, a plurality of second embedding grooves b are connected to each other through the interior of the screw structure 110, thereby increasing the embedding depth of the side wall of the fastening position in the plurality of second embedding grooves b, and further improving the fastening performance of the fastening screw 100 of the utility model.

[0036] To sum up, when the fastening screw disclosed by the utility model screws the screw structure into the fastening position that cooperates with it, the external thread is connected with the matching cavity inside the fastening position. At this time, the external thread can effectively limit the axial displacement between the screw structure and the fastening position, so as to achieve the purpose of axial fastening; at the same time, when the inside of the fastening position is a matching surface with poor integrity and low fastening performance, the wall surface of the matching cavity inside the fastening position is embedded in the first embedding part and the second embedding part, thereby further strengthening the bonding strength between the screw structure and the fastening position, so as to further limit the axial, radial displacement and circumferential rotation between the screw structure and the fastening position; for fastening positions with greater fluidity or softness such as gravel surfaces and rubber surfaces, the inner wall material of the matching cavity can be embedded and connected through a plurality of first embedding grooves and a plurality of second embedding grooves, thereby further improving the connection strength between the screw structure and the fastening position, greatly improving the fastening performance of the fastening screw of the utility model.

[0037] 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.

[0038] 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 fastening screw, characterized in that: include: A screw structure, wherein an external thread is provided on the surface of the screw structure, and the external thread extends from one end of the screw structure toward the other end by a preset distance; the screw structure comprises a first embedded portion and a second embedded portion, wherein the first embedded portion is provided at one end of the screw structure, and the second embedded portion is provided at the other end of the screw structure, and the first embedded portion and the second embedded portion are connected inside the screw structure; The first embedded portion is provided with a plurality of first embedded grooves, which are opened on the end surface of the first embedded portion, and each of the first embedded grooves extends a preset distance toward the second embedded portion along the length extension direction of the screw structure; the second embedded portion is provided with a plurality of second embedded grooves, which are opened on the side surface of the second embedded portion, and each of the second embedded grooves extends a preset distance toward the axis along the radial direction of the screw; the plurality of first embedded grooves are respectively connected with the plurality of second embedded grooves in a one-to-one correspondence.

2. The fastening screw according to claim 1, characterized in that: The fastening screw further comprises a nut structure, and the nut structure is arranged at one end of the screw rod structure.

3. The fastening screw according to claim 2, characterized in that: The nut structure is arranged at the end of the second embedded part.

4. The fastening screw according to claim 3, characterized in that: The screw structure further includes a third embedded portion, which is disposed between the first embedded portion and the second embedded portion, and is disposed outside a plurality of the first embedded grooves.

5. The fastening screw according to claim 4, characterized in that: The third embedding portion is provided with a plurality of third embedding grooves, which are respectively arranged on the side surface of the third embedding portion, and each of the third embedding grooves extends a preset distance along the length extension direction of the screw structure.

6. The fastening screw according to claim 5, characterized in that: Each of the second embedding grooves is provided with a first guide portion and a first cutting portion, and the first guide portion and the first cutting portion are provided on both sides of the second embedding groove.

7. The fastening screw according to claim 6, characterized in that: The first guide portion is arranged on the side to which the rotation direction of the second embedding groove points during the screwing-in process; the first cutting portion is arranged on the side of the second embedding groove that is opposite to the rotation direction during the screwing-in process.

8. The fastening screw according to claim 7, characterized in that: A plurality of the third embedding grooves are provided with a second guide portion and a second cutting portion, and the second guide portion and the second cutting portion are provided on both sides of the third embedding groove.

9. The fastening screw according to claim 8, characterized in that: The second guide portion is arranged on the side of the third embedded groove that is pointed to by the rotation direction during the screwing-in process; the second cutting portion is arranged on the side of the third embedded groove that is opposite to the rotation direction during the screwing-in process.

10. The fastening screw according to claim 9, characterized in that: The end surface of the first embedded portion facing away from the nut structure is configured as a conical structure.

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