Anti-loosening screw structure

Abstract

The utility model discloses an anti-loosening screw rod structure which comprises a screw rod head, a screw rod body, an external thread, a connected piece, a nut, a first threaded hole, a second threaded hole, an upper anti-loosening assembly and a lower anti-loosening assembly, the lower portion of the screw rod head is fixedly connected with the screw rod body, and the external thread is arranged on the outer wall of the screw rod body. The connected piece is installed above the screw body through external threads, a nut is installed below the connected piece through threads, the nut is located below the screw body, first threaded holes are symmetrically formed in the top of the screw head, the two first threaded holes extend to the bottom of the screw head, second threaded holes are symmetrically formed in the bottom of the nut, and the second threaded holes extend to the bottom of the screw head. The two second threaded holes extend to the top of the nut, the first threaded holes and the second threaded holes are correspondingly formed in the vertical direction, the firmness of the screw can be greatly improved, the phenomenon of loosening is not prone to occurring when the screw is connected with a connected piece, and the firmness is high.

Description

[Technical field]

[0001] The utility model relates to the technical field of screw rods, in particular to the technical field of an anti-loosening screw rod structure. [Background technology]

[0002] A screw is a cylinder or cone with spiral grooves cut on the outer surface. These spiral grooves can have different head shapes, such as external hexagonal screws, large flat screws, internal hexagonal screws, etc. Screws are widely used in many fields and industries.

[0003] The screws currently used mainly rotate by threads. When connecting objects, the connected objects are fixed to the screws by threads respectively. During the process of connecting and fastening objects, the screws slip and loosen, causing the connected objects to loosen and fall off, thus causing a series of problems and accidents.

[0004] In order to solve the problems raised in the background technology, for example, publication number CN203516380U discloses an anti-loosening screw, including a first rod body with threads, a second rod body and a third rod body, each of which is cylindrical, the second rod body is located between the first rod body and the third rod body, the diameter of the second rod body is larger than the diameters of the other two rod bodies, the connection between the first rod body and the second rod body adopts an arc transition, the center lines of the first rod body, the second rod body and the third rod body are on the same straight line, and by setting three rod bodies with different rod diameters, when connecting objects, the connected objects are fixedly connected to each rod body through threads, and the loosening phenomenon is effectively prevented in the connection and tightening of objects. However, the structure still has the following defects:

[0005] Although this structure connects objects by setting three rods with different rod diameters and fixing the connected objects to each rod through threads, the device will vibrate and shake during use, resulting in poor installation stability of the device. It is still easy to loosen or even fall off during long-term use. [Contents of the utility model]

[0006] The purpose of the utility model is to solve the problems in the prior art and to provide an anti-loosening screw structure, which can greatly improve the firmness of the screw, so that the screw is not easy to loosen when connected to the connected part, and has strong firmness.

[0007] To achieve the above-mentioned purpose, the utility model proposes an anti-loosening screw structure, including a screw head, a screw body, an external thread, a connected piece, a nut, a threaded hole one, a threaded hole two, an upper anti-loosening component, and a lower anti-loosening component. The screw head is fixedly connected to the screw body below, the outer wall of the screw body is provided with an external thread, the connected piece is installed on the top of the screw body through the external thread, the connected piece is threadedly installed with a nut below, the nut is located below the screw body, the top of the screw head is symmetrically provided with threaded holes one, two of the threaded holes one are extended to the bottom of the screw head, the bottom of the nut is symmetrically provided with threaded holes two, two of the threaded holes two are extended to the top of the nut, the threaded hole one and the threaded hole two are respectively arranged correspondingly up and down, the two threaded holes one are threadedly installed with an upper anti-loosening component, and the two threaded holes two are installed with a lower anti-loosening component compatible with the upper anti-loosening component.

[0008] Preferably, a mounting groove is provided at the top center of the screw head, and the mounting groove has a square structure.

[0009] Preferably, a protective pad 1 is sleeved on the screw body, and the protective pad 1 is located between the screw head and the connected part.

[0010] Preferably, a second protective pad is sleeved on the screw body, and the second protective pad is located between the connected part and the nut.

[0011] Preferably, the protective pad 1 and the protective pad 2 both adopt an elastic rubber pad structure.

[0012] Preferably, the upper anti-loosening assembly includes an upper limit screw and a thread groove, the upper limit screw is threadedly installed in a threaded hole and extends into the connected part, and a thread groove is provided at the inner bottom end of the upper limit screw.

[0013] Preferably, the lower anti-loosening assembly includes a lower limit screw and a threaded column, the lower limit screw is threadedly installed in the second threaded hole and extends into the connected part, and the bottom end of the lower limit screw is provided with a threaded column adapted to the thread groove.

[0014] Beneficial effects of the utility model:

[0015] The utility model can greatly improve the firmness of the screw rod by the coordinated use of the threaded hole one, the threaded hole two, the upper anti-loosening component and the lower anti-loosening component. When the screw rod body is passed through the connected part by using the tool, it is fixed by tightening the nut upwards, and then the upper limit screw is screwed into the threaded hole one by the tool until the upper limit screw is screwed into the interior of the connected part, and then the lower limit screw is screwed into the threaded hole two, and the lower limit screw is also screwed into the interior of the connected part until the threaded column on the lower limit screw is screwed into the threaded groove on the upper limit screw, thereby completing the locking of the connected part, and can lock and fix the upper and lower surfaces of the connected part at the same time, thereby preventing the screw rod from loosening, and the protective pad one and the protective pad two can protect the screw head and the nut, and the protective pad one and the protective pad two have the effect of vibration reduction, can absorb the vibration generated during the operation of the equipment, can prevent the screw rod from loosening, and can also play a sealing role, thereby solving the problem that the equipment may vibrate and shake during use, or it may be easy to loosen or even fall off.

Brief Description of the Drawings

[0016] Figure 1 This is a front view of an anti-loosening screw structure of the utility model;

[0017] Figure 2 This is a schematic diagram of a screw rod of an anti-loosening screw rod structure of the utility model;

[0018] Figure 3 This is a schematic diagram of an upper anti-loosening component of an anti-loosening screw structure of the utility model;

[0019] Figure 4 This is a schematic diagram of a lower anti-loosening component of an anti-loosening screw structure of the utility model;

[0020] In the figure: 1-screw head, 2-screw body, 3-external thread, 4-connected part, 5-nut, 6-threaded hole one, 7-threaded hole two, 8-upper anti-loosening assembly, 81-upper limit screw, 82-threaded groove, 9-lower anti-loosening assembly, 91-lower limit screw, 92-threaded column, 10-installation groove, 11-protective pad one, 12-protective pad two. [Specific implementation method]

[0021] See also Figures 1 to 4The utility model discloses an anti-loosening screw structure, comprising a screw head 1, a screw body 2, an external thread 3, a connected piece 4, a nut 5, a threaded hole 1 6, a threaded hole 2 7, an upper anti-loosening assembly 8, and a lower anti-loosening assembly 9. The screw head 1 is fixedly connected to the screw body 2 below, and the outer wall of the screw body 2 is provided with an external thread 3. The connected piece 4 is installed above the screw body 2 through the external thread 3. The connected piece 4 is threadedly installed with a nut 5 below the connected piece 4. The nut 5 is located below the screw body 2. The top of the screw head 1 is symmetrically provided with a threaded hole 1 6, and two The threaded holes 1 6 are extended to the bottom of the screw head 1, and threaded holes 2 7 are symmetrically opened at the bottom of the nut 5. The two threaded holes 2 7 are extended to the top of the nut 5. The threaded holes 1 6 and the threaded holes 2 7 are respectively arranged correspondingly up and down. The two threaded holes 1 6 are threadedly installed with upper anti-loosening components 8, and the two threaded holes 2 7 are installed with lower anti-loosening components 9 matched with the upper anti-loosening components 8. By arranging the upper anti-loosening components 8 and the lower anti-loosening components 9 for use in coordination, the connected component 4 can be firmly fixed on the screw body 2 with strong stability.

[0022] See also Figure 1 and Figure 2 The utility model discloses an anti-loosening screw structure, a mounting groove 10 is provided at the top center position of the screw head 1, and the mounting groove 10 is in a square structure. A protective pad 11 is sleeved on the screw body 2, and the protective pad 11 is located between the screw head 1 and the connected part 4. A protective pad 2 is sleeved on the screw body 2, and the protective pad 2 12 is located between the connected part 4 and the nut 5. The protective pad 11 and the protective pad 2 12 both adopt an elastic rubber pad structure. By arranging the protective pad 11 and the protective pad 2 12, the screw head 1 and the nut 5 can be protected. At the same time, the protective pad 11 and the protective pad 2 12 have a vibration reduction effect, can absorb the vibration generated during the operation of the equipment, can prevent the screw from loosening, and can also play a sealing role.

[0023] See also Figure 3 The utility model provides an anti-loosening screw structure, the upper anti-loosening component 8 includes an upper limit screw 81 and a thread groove 82. The upper limit screw 81 is threadedly installed in a threaded hole 6 and extends into the connected part 4. The inner bottom end of the upper limit screw 81 is provided with a thread groove 82. The upper limit screw 81 is screwed into the threaded hole 6 by a tool until the upper limit screw 81 is screwed into the inside of the connected part 4, so that the upper part of the connected part 4 is locked and connected with the screw head 1.

[0024] See also Figure 4The utility model provides an anti-loosening screw structure, the lower anti-loosening component 9 includes a lower limit screw 91 and a threaded column 92. The lower limit screw 91 is threadedly installed in the threaded hole 7 and extends into the connected part 4. The bottom end of the lower limit screw 91 is provided with a threaded column 92 adapted to the thread groove 82. By screwing the lower limit screw 91 into the threaded hole 7 and screwing the lower limit screw 91 into the inside of the connected part 4, until the threaded column 92 on the lower limit screw 91 is screwed into the thread groove 82 on the upper limit screw 81, the lower part of the connected part 4 is locked and connected with the nut 5, thereby preventing the screw from loosening due to vibration of the equipment.

[0025] Working process of this utility model:

[0026] The utility model discloses an anti-loosening screw structure during working process, after using the tool to pass the screw body 2 through the connected part 4, it is fixed by tightening the nut 5 upwards, and then the upper limit screw 81 is screwed into the threaded hole 1 6 by the tool, until the upper limit screw 81 is screwed into the interior of the connected part 4, and then the lower limit screw 91 is screwed into the threaded hole 2 7, and the lower limit screw 91 is also screwed into the interior of the connected part 4, until the threaded column 92 on the lower limit screw 91 is screwed into the threaded groove 82 on the upper limit screw 81, thereby completing the locking of the connected part 4, and can simultaneously lock and fix the upper and lower surfaces of the connected part 4, thereby preventing the screw from loosening, and can protect the screw head 1 and the nut 5 by the protective pad 1 11 and the protective pad 2 12, and the protective pad 1 11 and the protective pad 2 12 have the effect of vibration reduction, can absorb the vibration generated during the operation of the equipment, can prevent the screw from loosening, and can also play a sealing role.

[0027] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An anti-loosening screw structure, characterized in that: The invention comprises a screw head (1), a screw body (2), an external thread (3), a connected member (4), a nut (5), a first threaded hole (6), a second threaded hole (7), an upper anti-loosening assembly (8), and a lower anti-loosening assembly (9), wherein the screw body (2) is fixedly connected to the lower part of the screw head (1), the outer wall of the screw body (2) is provided with an external thread (3), the connected member (4) is mounted on the upper part of the screw body (2) via the external thread (3), the lower part of the connected member (4) is threadedly mounted with a nut (5), and the nut (5) is located below the screw body (2). The top of the screw head (1) is symmetrically provided with threaded holes (6), and the two threaded holes (6) extend to the bottom of the screw head (1). The bottom of the nut (5) is symmetrically provided with threaded holes (7), and the two threaded holes (7) extend to the top of the nut (5). The threaded holes (6) and the threaded holes (7) are respectively arranged in correspondence with each other up and down. The two threaded holes (6) are threadedly installed with upper anti-loosening components (8), and the two threaded holes (7) are installed with lower anti-loosening components (9) that are compatible with the upper anti-loosening components (8).

2. The anti-loosening screw structure according to claim 1, characterized in that: A mounting groove (10) is provided at the center of the top of the screw head (1), and the mounting groove (10) is in a square structure.

3. The anti-loosening screw structure according to claim 1, characterized in that: A protective pad 1 (11) is sleeved on the screw body (2), and the protective pad 1 (11) is located between the screw head (1) and the connected part (4).

4. The anti-loosening screw structure according to claim 3, characterized in that: A second protective pad (12) is sleeved on the screw body (2), and the second protective pad (12) is located between the connected part (4) and the nut (5).

5. The anti-loosening screw structure according to claim 4, characterized in that: The protective pad 1 (11) and the protective pad 2 (12) both adopt an elastic rubber pad structure.

6. The anti-loosening screw structure according to claim 1, characterized in that: The upper anti-loosening assembly (8) comprises an upper limit screw (81) and a thread groove (82); the upper limit screw (81) is threadedly installed in the threaded hole (6) and extends into the connected component (4); and the inner bottom end of the upper limit screw (81) is provided with a thread groove (82).

7. The anti-loosening screw structure according to claim 6, characterized in that: The lower anti-loosening assembly (9) comprises a lower limit screw (91) and a threaded column (92); the lower limit screw (91) is threadedly installed in the second threaded hole (7) and extends into the connected component (4); the bottom end of the lower limit screw (91) is provided with a threaded column (92) adapted to the thread groove (82).

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