A multi-functional screw

Abstract

The utility model relates to screw technical field, concretely is a kind of multifunctional screw, including screw main body, the screw main body is composed of outer screw and inner screw, the top end of this outer screw is integrally connected with No. nut, and the nail body inner cavity middle part of outer screw is arranged with the inner screw hole that passes through up and down;The utility model can be fixed to two times to utensil machine part 1 and utensil machine part 2, realize the double fixing of two utensil machine parts, improve the sequential and gradual fastening ability of the multifunctional screw, improve the compactness and firmness of two utensil machine parts combination, and the fixed connection of two objects can be realized by the quick rotation of holding block outer screw, simultaneously also convenient with inner screw together with outer screw is rotated and separates two utensil machine parts, and the disassembly convenience is high, convenient to use, solve the technical problem of poor screw fastening ability in prior art, the fixing effect of two utensil machine parts is poor, disassembly difficulty is relatively large and inconvenient to use.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a multifunctional screw. Background Technology

[0002] A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually fasten objects and machine parts. It can quickly and securely connect two objects or machine parts together. Screws have many functions, including fixing two objects or machine parts together and adjusting the distance between them. With the continuous development of technology, different types of multi-functional screws have appeared on the market.

[0003] A multifunctional screw disclosed in the prior art by patent number CN216895273U includes a screw cap and a first screw. The first screw is located on one side of the screw cap, and a second screw is screwed into the first threaded groove. A pentagonal block is fitted on the outer surface of the second screw, and a pentagonal groove is formed on one side of the screw cap. However, the following problems exist:

[0004] Multi-functional screws are mostly used to directly fix two objects or parts together. However, the screws have poor tightening ability, resulting in poor fixing effect between the two objects or parts. Furthermore, when disassembling multi-functional screws, special tools are often required to unscrew them, making disassembly difficult and inconvenient.

[0005] Therefore, this application provides a multifunctional screw to meet the requirements. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a multifunctional screw that can solve the technical problems of poor screw fastening ability, poor fixing effect between two objects or mechanical parts, and difficulty in disassembly and inconvenience in use.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a multifunctional screw, comprising a screw body, the screw body being composed of an outer screw and an inner screw, the top of the outer screw being integrally connected to a first nut, and the inner cavity of the outer screw having an internal thread hole that runs vertically through the middle, the top of the first nut having a first through hole that runs through the internal thread hole, and the top of the first nut being connected to a holding block, the top of the holding block having an open structure and a hollow inner cavity, and the bottom of the holding block having a second through hole that runs through the first through hole;

[0008] The bottom end of the internal screw passes through the second through hole and the first through hole in sequence and extends spirally into the internal screw hole. The bottom end of the internal screw extends to the position below the external screw and is connected to an insertion cone. The top end of the internal screw is integrally connected to the second nut.

[0009] Preferably, the top of the second nut is provided with a cross groove or a slotted groove, and the bottom of the second nut is integrally connected to the top of the inner screw with a second baffle.

[0010] Preferably, the lateral width of the second baffle plate exceeds the lateral width of the cavity of the second perforation.

[0011] Preferably, the outer diameter of the second nut does not exceed the transverse width of the inner cavity of the holding block, and the center point of the second nut, the center point of the second through hole, and the center point of the first through hole are all located on the vertical central axis of the outer screw body.

[0012] Preferably, a first stop plate is integrally connected between the top of the screw body of the external screw and the first nut, and the lateral length of the first stop plate exceeds the outer diameter of the first nut.

[0013] Preferably, the outer diameter of the first nut does not exceed the lateral length of the holding block, the overall shape of the holding block is cylindrical, and the outer side wall of the holding block is provided with anti-slip grooves at intervals.

[0014] Preferably, the screw diameter of the internal screw is equal to the diameter of the internal thread hole, and the vertical length of the internal screw body exceeds the vertical length of the external screw body.

[0015] Preferably, the lower part of the outer surface of the inner screw is provided with a No. 2 thread, which cooperates with the inner thread hole to realize the inner screw being screwed into the inner thread hole to securely connect with the outer screw, and the lower part of the outer surface of the outer screw is provided with a No. 1 thread.

[0016] Compared with known public technologies, the technical solution provided by this utility model has the following beneficial effects:

[0017] 1. This utility model, through the provision of external and internal screws, enables secondary fixation of two objects / mechanical components, thereby achieving dual fixation of the two components. This improves the progressive tightening capability of the multi-functional screw, enhances the tightness and firmness of the connection between the two components, and allows for quick rotation of the external screw via the holding block to drive it into the two components for fixed connection. It also facilitates the removal of the internal screw along with the external screw from the two components, improving the ease of disassembly of the multi-functional screw. This promotes the widespread use of the multi-functional screw and solves the technical problems of poor screw tightening capability, poor fixation effect of two components, and difficulty in disassembly and use in the prior art.

[0018] 2. This utility model, through the setting of the insertion cone, can greatly improve the spiral rotation capability of the inner screw, making it convenient and quick to screw the inner screw into the outer screw to perform secondary fastening connection between two objects or parts. In addition, the setting of the holding block allows the user to directly rotate the outer screw, thereby making it easy to control the screwing depth of the outer screw and the installation position of the inner screw. At the same time, with the cooperation of the cross groove and the No. 2 nut, the inner screw can be quickly removed with tools, further improving the disassembly convenience of this multi-functional screw. Attached Figure Description

[0019] The present invention is further described with reference to embodiments illustrated in the following figures, wherein:

[0020] Figure 1 This is a front view of the structure of the multifunctional screw of this utility model;

[0021] Figure 2 This is a cross-sectional view of the structure of the multifunctional screw of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the combination of the external screw and the No. 1 nut of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the No. 1 nut and the holding block of this utility model in combination.

[0024] Figure 5 This is a structural diagram of the combination of the internal screw and the No. 2 nut of this utility model.

[0025] [Figure Labels]

[0026] 1. External screw; 101. No. 1 thread; 102. Internal threaded hole; 2. No. 1 nut; 201. No. 1 through hole; 202. No. 1 retainer; 3. Holding block; 301. No. 2 through hole; 4. Internal screw; 401. Insertion cone; 402. No. 2 nut; 403. No. 2 retainer; 404. No. 2 thread; 405. Cross groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The present invention will be further described below with reference to embodiments:

[0029] Please see Figure 1-5As shown, a multifunctional screw includes a screw body composed of an outer screw 1 and an inner screw 4. A first nut 2 is integrally connected to the top of the outer screw 1, and an internal threaded hole 102 is arranged in the middle of the screw body. A first through hole 201 communicating with the internal threaded hole 102 is opened in the middle of the top of the first nut 2, and a holding block 3 is connected to the top of the first nut 2. The top of the holding block 3 has an open structure and a hollow internal structure. A second through hole 301 communicating with the first through hole 201 is opened in the bottom of the holding block 3. The bottom end of the inner screw 4 passes through the second through hole 301 and the first through hole 201 in sequence and spirally extends into the internal threaded hole 102. An insertion cone 401 is connected to the bottom end of the inner screw 4 below the outer screw 1, and the second nut 402 is integrally connected to the top of the inner screw 4. The aforementioned insertion cone 401 improves the spiral rotation capability of the inner screw 4, making it convenient and quick to use. The inner screw 4 is screwed into the outer screw 1 to re-tighten the connection between the two components. The inner screw 4 has a diameter equal to the diameter of the inner screw hole 102, and its vertical length exceeds that of the outer screw 1. A second thread 404 is arranged on the lower part of the outer surface of the inner screw 4. The arrangement of the second thread 404 reduces contact wear between the inner screw 4 and the component during use, extending the service life of the inner screw 4. The second thread 404 cooperates with the inner screw hole 102 to allow the inner screw 4 to be screwed into the inner screw hole 102 for a secure connection with the outer screw 1. A first thread 101 is arranged on the lower part of the outer surface of the outer screw 1. The arrangement of the first thread 101 reduces contact wear between the outer screw 1 and the component during use, thereby extending the service life of both the outer and inner screws, thus improving the robustness and durability of the multi-functional screw and extending its service life.

[0030] Please see Figure 3 , Figure 4 and Figure 5As shown, the top of the second nut 402 has a cross groove 405 or a slotted groove. The bottom of the second nut 402 is integrally connected to the top of the inner screw 4 with a second baffle 403. The lateral width of the second baffle 403 exceeds the lateral width of the cavity of the second through hole 301. The outer diameter of the second nut 402 does not exceed the lateral width of the inner cavity of the holding block 3. The center point of the second nut 402, the center point of the second through hole 301, and the center point of the first through hole 201 are all located on the vertical central axis of the outer screw 1. The top of the outer screw 1 mentioned above... A first baffle plate 202 is integrally connected to the first nut 2. The lateral length of the first baffle plate 202 exceeds the outer diameter of the first nut 2. The outer diameter of the first nut 2 does not exceed the lateral length of the holding block 3. The holding block 3 has a cylindrical shape, and anti-slip grooves are arranged at intervals on the outer side wall of the holding block 3. The use of anti-slip grooves can increase the roughness of the surface of the holding block 3 and improve the friction of the surface of the holding block 3, making it convenient for the user to directly use the holding block 3 to rotate the external screw. The first nut 2 and the second nut 402 are both, but not limited to, hexagonal nuts.

[0031] When using this multi-functional screw, firstly, using a nut 2, the outer screw 1 can be screwed in with a tool such as a wrench to connect component one and component two. Alternatively, the outer screw 1 can be directly rotated using the holding block 3. This is the first stage of fixing. Then, the inner screw 4 is screwed into the inner thread hole 102 and extends out of the inner thread hole 102 to connect with the component. This allows for the second stage of fixing of component one and component two, thereby improving the progressive tightening ability of the multi-functional screw and making it easier to use the multi-functional screw to make the two components more firmly connected. When disassembling the multi-functional screw, simply use the holding block 3 to rotate the outer screw in the opposite direction to unscrew the outer screw 1 and the inner screw 4 together from the two fixed components, making it easy to separate the two components. Alternatively, a screwdriver can be used with a Phillips head 405 or a flathead head to rotate the inner screw 4 counterclockwise, allowing the inner screw 4 to be removed directly and quickly, improving the disassembly convenience of the multi-functional screw.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this 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 of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multifunctional screw, characterized in that: The screw body consists of an outer screw (1) and an inner screw (4). The top of the outer screw (1) is integrally connected to a first nut (2), and the inner cavity of the outer screw (1) is provided with an inner thread hole (102) that runs vertically through it. The top of the first nut (2) is provided with a first through hole (201) that runs through the inner thread hole (102). The top of the first nut (2) is connected to a holding block (3). The top of the holding block (3) is an open structure and the inner cavity is a hollow structure. The bottom of the holding block (3) is provided with a second through hole (301) that runs through the first through hole (201). The bottom end of the inner screw (4) passes through the second through hole (301) and the first through hole (201) in sequence and spirals into the inner screw hole (102). The bottom end of the inner screw (4) extends below the outer screw (1) and is connected to an insertion cone (401). The top end of the inner screw (4) is integrally connected to the second nut (402).

2. The multifunctional screw according to claim 1, characterized in that: The top of the second nut (402) is provided with a cross groove (405) or a slotted groove, and the bottom of the second nut (402) is integrally connected with the top of the inner screw (4) with a second baffle (403).

3. The multifunctional screw according to claim 2, characterized in that: The transverse width of the second baffle (403) exceeds the transverse width of the cavity of the second perforation (301).

4. The multifunctional screw according to claim 1, characterized in that: The outer diameter of the second nut (402) does not exceed the transverse width of the inner cavity of the holding block (3). The center point of the second nut (402), the center point of the second through hole (301), and the center point of the first through hole (201) are all located on the vertical central axis of the outer screw (1).

5. The multifunctional screw according to claim 1, characterized in that: The top of the screw body of the external screw (1) is integrally connected to the first nut (2) with a first baffle (202), the transverse length of the first baffle (202) exceeding the outer diameter of the first nut (2).

6. The multifunctional screw according to claim 1, characterized in that: The outer diameter of the first nut (2) does not exceed the transverse length of the holding block (3). The overall shape of the holding block (3) is cylindrical, and anti-slip grooves are arranged at intervals on the outer side wall of the holding block (3).

7. The multifunctional screw according to claim 1, characterized in that: The screw diameter of the inner screw (4) is equal to the diameter of the inner screw hole (102), and the vertical length of the inner screw (4) exceeds the vertical length of the outer screw (1).

8. The multifunctional screw according to claim 1, characterized in that: The lower part of the outer surface of the inner screw (4) is provided with a No. 2 thread (404). The No. 2 thread (404) cooperates with the inner thread hole (102) to realize the inner screw (4) being screwed into the inner thread hole (102) to be firmly connected with the outer screw (1). The lower part of the outer surface of the outer screw (1) is provided with a No. 1 thread (101).

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