Screw-in fastener

Abstract

The utility model discloses a screw-in type fastener, and relates to the technical field of fasteners. The screw-in type fastener comprises a first screw rod, a groove A is formed in the first screw rod, an adjusting mechanism is in threaded connection with the interior of the groove A, a sliding mechanism is fixedly connected to the bottom of the first screw rod, the adjusting mechanism comprises a second screw rod, the outer surface of the second screw rod is in threaded connection with the interior of the first screw rod, and the outer surface of the second screw rod is in threaded connection with the interior of the first screw rod. And the bottom of the second screw rod is fixedly connected with a first connecting piece. By means of the adjusting mechanism, when the first screw enters the component and the size of the first screw does not conform to the size of the component, the adjusting mechanism continues to be screwed inwards under the condition that the first screw is not screwed out of the component, the size of the fastener is increased, and when the size is adjusted, the first screw is screwed out of the component. And the size of the fastener can be precisely adjusted according to the size of a component, and the component can be fixed more firmly while the precision is improved.

Description

Technical Field

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

[0002] Fasteners are mechanical parts used to connect and fix two or more components. They are widely used in many industries such as construction, machinery, automobiles, and electronics. They usually maintain the strength and stability of the connection by applying pressure or force. There are many types of fasteners. Choosing the right fastener is crucial to the reliability and safety of the structure. Screw-in fasteners are a mechanical component used to connect or fix two or more components. They are usually fastened by screwing. There are many types of screw-in fasteners and they are widely used in various types of machinery, construction and assembly projects.

[0003] Upon investigation, a Chinese utility model patent discloses a screw-in fastener (publication number: CN 220523019U), which includes a first screw and a second screw. The bottom of the first screw is fixedly connected to an insert block, the bottom of the second screw is provided with a slot, and the insert block is inserted into the inner cavity of the slot. The upper end of the inner surface of the second screw and the inner surface of the insert block are both provided with screw holes. The utility model is provided with a first screw and a second screw to connect components. The insert block, a third screw, a slot and a screw hole are provided. People insert the insert block into the slot and thread the third screw into the screw hole to connect the first screw and the second screw, thereby enabling the fastener to connect components of different sizes. A nano-chromium oxide coating is provided to improve the overall wear resistance of the fastener. A chlorosulfonated polyethylene coating is provided to improve the overall corrosion resistance of the fastener if the outer nano-chromium oxide coating is damaged.

[0004] In the above patent, although the size of the fastener can be adjusted according to the size of the component, the adjustment method is to first adjust the size of the fastener and then screw the fastener into the component. There will be errors in the measured size, resulting in poor fastening effect, looseness or excessive length. It is not convenient to adjust the size of the fastener again after the fastener is inserted into the component to make it more tightly fixed.

[0005] Therefore, the present invention provides a screw-in fastener to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention provides a screw-in fastener, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a screw-in fastener includes a first screw, wherein a groove A is formed inside the first screw, an adjustment mechanism is connected to the internal thread of the groove A, and a sliding mechanism is fixedly connected to the bottom of the first screw;

[0008] The adjusting mechanism includes a second screw, the outer surface of the second screw is threadedly connected to the inside of the first screw, the bottom of the second screw is fixedly connected to a first connecting piece, the bottom of the first connecting piece is fixedly connected to a first spring on all four sides, and one end of the first spring is fixedly connected to the second connecting piece.

[0009] A further improvement of the technical solution of the present utility model is that the sliding mechanism includes a base plate, the upper surface of the base plate is fixedly connected to the bottom of the first screw, the outer surface of the base plate is provided with a sliding groove, the interior of the sliding groove is fixedly connected to a connecting rod, and the outer surface of the connecting rod is rotatably connected to a rotating ball.

[0010] A further improvement of the technical solution of the present utility model is that: a B groove is provided in the middle of the first screw, a connecting sleeve is fixedly connected to the inside of the B groove, a connecting groove is provided on the outer surface of the connecting sleeve, and a rubber ring is fixedly connected to the inside of the connecting groove.

[0011] A further improvement of the technical solution of the present invention is that support rods are fixedly connected to the four sides of the bottom of the base plate, a second spring is sleeved on the outer surface of the support rod, and the upper surface of the second spring is fixedly connected to the bottom of the base plate.

[0012] A further improvement of the technical solution of the present utility model is that: a gasket is fixedly connected to the bottom of the second spring, a hole groove is fixedly connected to the bottom of the gasket, and an anti-slip protrusion is fixedly connected to the inside of the hole groove.

[0013] A further improvement of the technical solution of the present utility model is that: a reinforcement ball is fixedly connected to the bottom of the second connecting piece, and a rubber sleeve is sleeved on the outer surface of the reinforcement ball.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the provided adjustment mechanism, when the first screw enters the component and it is found that the size of the first screw and the component do not match, the adjustment mechanism is further screwed inward without screwing the first screw out of the component to increase the size of the fastener. When adjusting the size, the size of the fastener can be accurately adjusted according to the size of the component, and the component can be fixed more firmly when the accuracy is increased;

[0016] 2. Through the sliding mechanism, when the fastener is rotated into the component, if the threads of the fastener and the component are not matched accurately or the dirt, rust or impurities on the mating surface increase friction, it may cause the fastener to get stuck or not enter smoothly during rotation. The sliding mechanism can make the rotating ball slide inside the component, accelerating the fastener to enter the component and ensuring smooth operation.

[0017] 3. The flexibility of the rubber ring enables it to adapt to different contact surfaces and maintain a good anti-slip effect even on uneven surfaces. When the fastener is rotated into the interior of the component, the rubber material has good friction properties, which can increase the friction between the contact surface, thereby reducing the possibility of sliding, strengthening the stability of the fastener inside the component, and avoiding loosening, which may cause the fastener to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a screw-in fastener;

[0019] Figure 2 Schematic diagram of the installation of the second screw in the screw-in fastener;

[0020] Figure 3 A schematic diagram of the installation of a rotating ball in a screw-in fastener;

[0021] Figure 4 This is a schematic diagram of the installation of a rubber ring in a screw-in fastener;

[0022] Figure 5 Schematic diagram of the structure of the first spring in the screw-in fastener.

[0023] In the figure: 1. First screw; 2. Second screw; 3. First connecting plate; 4. First spring; 5. Second connecting plate; 6. Bottom plate; 7. Connecting rod; 8. Rotating ball; 9. Connecting sleeve; 10. Rubber ring; 11. Support rod; 12. Second spring; 13. Gasket; 14. Reinforcement ball. DETAILED DESCRIPTION

[0024] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0025] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0027] Reference Figure 1-Figure 5 , this utility model provides two technical solutions:

[0028] Example 1:

[0029] The screw-in fastener comprises a first screw rod 1, wherein a groove A is formed inside the first screw rod 1, an adjustment mechanism is connected to the internal thread of the groove A, and a sliding mechanism is fixedly connected to the bottom of the first screw rod 1;

[0030] The adjusting mechanism includes a second screw 2, the outer surface of the second screw 2 is threadedly connected to the inside of the first screw 1, the bottom of the second screw 2 is fixedly connected to a first connecting piece 3, the bottom of the first connecting piece 3 is fixedly connected to a first spring 4 on all four sides, and one end of the first spring 4 is fixedly connected to a second connecting piece 5.

[0031] When the first screw 1 enters the component and it is found that the size of the first screw 1 does not match the size of the component, the adjustment mechanism is continued to be screwed inward without unscrewing the first screw 1 out of the component to increase the size of the fastener. When adjusting the size, the size of the fastener can be accurately adjusted according to the size of the component, and the component can be fixed more firmly when the accuracy is increased.

[0032] Example 2:

[0033] Based on Example 1:

[0034] The sliding mechanism includes a base plate 6, the upper surface of the base plate 6 is fixedly connected to the bottom of the first screw 1, and a sliding groove is provided on the outer surface of the base plate 6. The interior of the sliding groove is fixedly connected to a connecting rod 7, and the outer surface of the connecting rod 7 is rotatably connected to a rotating ball 8. When the fastener is rotated into the interior of the component, if the threads of the fastener and the component are not accurately matched or the dirt, rust or impurities on the matching surface increase friction, it may cause the fastener to get stuck or enter smoothly during rotation. The sliding mechanism can be used to make the rotating ball 8 slide inside the component, accelerate the fastener to enter the interior of the component, and operate smoothly.

[0035] A B groove is provided in the middle of the first screw 1, and a connecting sleeve 9 is fixedly connected to the inside of the B groove. A connecting groove is provided on the outer surface of the connecting sleeve 9, and a rubber ring 10 is fixedly connected to the inside of the connecting groove. The flexibility of the rubber ring 10 enables it to adapt to different contact surfaces and maintain a good anti-slip effect even on uneven surfaces. When the fastener is rotated into the interior of the component, the rubber material has good friction properties, which can increase the friction between the contact surface and the fastener, thereby reducing the possibility of sliding, strengthening the stability of the fastener inside the component, and avoiding loosening, which may cause the fastener to fall off.

[0036] The bottom of the base plate 6 is fixedly connected with support rods 11 on all sides, and the outer surface of the support rods 11 is sleeved with a second spring 12. The upper surface of the second spring 12 is fixedly connected to the bottom of the base plate 6. When the gasket 13 is squeezed, the gasket 13 will be close to the base plate 6, and the circular hole opened on the upper surface of the gasket 13 will insert the support rods 11 into it. The support rods 11 play a supporting role to prevent the second spring 12 from being excessively squeezed and causing the position of the gasket 13 to shift.

[0037] The bottom of the second spring 12 is fixedly connected with a gasket 13, the bottom of the gasket 13 is fixedly connected with a hole groove, and the inside of the hole groove is fixedly connected with anti-slip bumps. When the gasket 13 contacts the component, it can squeeze the component to reinforce it, and the anti-slip bumps increase the anti-slip force.

[0038] A reinforcement ball 14 is fixedly connected to the bottom of the second connecting piece 5 , and a rubber sleeve is sleeved on the outer surface of the reinforcement ball 14 . The rubber sleeve can increase the softness and friction at the same time, thereby playing an anti-slip role.

[0039] On the basis of Example 1 and Example 2: When using the fastener, screw the first screw 1 into the interior of the component. When the first screw 1 enters the component, it will drive the second screw 2 to enter together. When the first screw 1 enters, in order to ensure smooth entry, the rotating ball 8 rotates in the sliding groove opened in the bottom plate 6 through the connecting rod 7. When the rotating ball 8 rotates, it will contact the inner wall of the component and slide and rotate on the inner wall of the component. The sliding mechanism can make the rotating ball 8 slide inside the component, accelerate the fastener to enter the interior of the component, and the operation is smooth. Subsequently, the first screw 1 is screwed to the deepest point, and the gasket 13 is used to press the component. The gasket 13 squeezes the second spring 12, and the second spring 12 squeezes the first On the screw 1, twisting the first screw 1 again can make the gasket 13 fit the component more closely, making it more firmly fixed. If the size of the first screw 1 is not enough and the gasket 13 cannot touch the component, twist the second screw 2. The second screw 2 is twisted inside the first screw 1. The second screw 2 drives the first connecting piece 3 inward, and the first connecting piece 3 drives the first spring 4 and the second connecting piece 5 inward. The second connecting piece 5 drives the reinforcement ball 14 inward to squeeze the reinforcement ball 14 into the interior of the component, against the component, and fixed. After the first screw 1 enters the component, there is a rubber ring 10 on the outer surface of the connecting sleeve 9. The rubber ring 10 is inside the component and can increase friction and play an anti-slip role.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw-in fastener comprising a first screw (1), characterized in that: A groove A is provided inside the first screw rod (1), the internal thread of the groove A is connected to an adjustment mechanism, and the bottom of the first screw rod (1) is fixedly connected to a sliding mechanism; The adjustment mechanism comprises a second screw (2), the outer surface of the second screw (2) being threadedly connected to the interior of the first screw (1), the bottom of the second screw (2) being fixedly connected to a first connecting piece (3), the four sides of the bottom of the first connecting piece (3) being fixedly connected to a first spring (4), and one end of the first spring (4) being fixedly connected to a second connecting piece (5).

2. The screw-in fastener according to claim 1, wherein: The sliding mechanism comprises a base plate (6), the upper surface of the base plate (6) is fixedly connected to the bottom of the first screw rod (1), the outer surface of the base plate (6) is provided with a sliding groove, the interior of the sliding groove is fixedly connected to a connecting rod (7), and the outer surface of the connecting rod (7) is rotatably connected to a rotating ball (8).

3. The screw-in fastener according to claim 1, wherein: A B groove is provided in the middle of the first screw (1), a connecting sleeve (9) is fixedly connected inside the B groove, a connecting groove is provided on the outer surface of the connecting sleeve (9), and a rubber ring (10) is fixedly connected inside the connecting groove.

4. The screw-in fastener according to claim 2, wherein: Support rods (11) are fixedly connected to the four sides of the bottom of the base plate (6); a second spring (12) is sleeved on the outer surface of the support rod (11); and the upper surface of the second spring (12) is fixedly connected to the bottom of the base plate (6).

5. The screw-in fastener according to claim 4, characterized in that: The bottom of the second spring (12) is fixedly connected to a gasket (13), the bottom of the gasket (13) is fixedly connected to a hole groove, and the interior of the hole groove is fixedly connected to an anti-slip protrusion.

6. The screw-in fastener according to claim 1, wherein: A reinforcement ball (14) is fixedly connected to the bottom of the second connecting piece (5), and a rubber sleeve is sleeved on the outer surface of the reinforcement ball (14).

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