A fastener for ease of positioning

Abstract

The utility model relates to the technical field of fastener, especially to a fastener convenient to position, including fastening bolt, hexagonal screw head, hexagonal nut and positioning guide shaft, one end of fastening bolt is equipped with hexagonal screw head, the outer end of fastening bolt is matched and is equipped with hexagonal nut, the one end of fastening bolt away from hexagonal screw head is equipped with positioning guide shaft, the one end of hexagonal screw head close to hexagonal nut is equipped with first pressure plate, the one end of hexagonal nut close to hexagonal screw head is equipped with second pressure plate corresponding to first pressure plate, the one end of hexagonal screw head away from fastening bolt is equipped with hexagonal screw groove, the utility model realizes the guiding strip of positioning guide shaft cooperation hexagonal nut's guide groove, realizes the quick positioning and accurate butt joint of hexagonal nut, under the working condition of high altitude operation, narrow space assembly etc.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a fastener that is easy to position. Background Technology

[0002] In numerous fields such as machinery manufacturing, construction installation, and equipment maintenance, fasteners, as core components connecting parts, directly affect the assembly efficiency and operational safety of the overall equipment due to their installation stability and convenience. Currently, the traditional fasteners widely used in the market mostly consist of bolts, nuts, and separately configured washers. In various scenarios such as mechanical equipment assembly, pipeline connection, and steel structure fixing, workers need to first pass the bolt through the mounting hole of the part to be connected, then manually align the thread on the outer end of the bolt and put on the nut, and finally tighten it with tools such as wrenches. However, with the continuous improvement of industrial production requirements for assembly precision and efficiency, the structural design of traditional fasteners has gradually become unable to meet the needs of use under complex working conditions, especially in scenarios such as high-altitude operations, assembly in confined spaces, or rapid batch installation. Their inherent structural defects lead to various problems during the assembly process, affecting the overall assembly quality and progress.

[0003] In practical use, existing fasteners have several drawbacks. First, the nuts lack an effective guiding and positioning structure during initial installation. In situations with poor visibility or limited space, the nuts are prone to shifting. If they are forcibly tightened, the threads may strip, affecting the reliability of the connection. Second, washers are usually required during the tightening process to achieve better tightening and prevent loosening. However, existing washers are separate from the fasteners and are easily lost during use.

[0004] Therefore, to address the problems existing in the practical use of the aforementioned fasteners, a fastener that is easy to position can be designed. This fastener uses a positioning guide shaft at the end of the bolt, surrounded by a guide strip with an arc surface, and a corresponding guide groove is provided on the inner wall of the nut. The guide shaft can be inserted into the nut first, and the guide groove, in conjunction with the guide strip, guides the nut and bolt to be precisely aligned, thereby facilitating the solution of the aforementioned problems. Utility Model Content

[0005] To overcome the shortcomings of existing fasteners, such as the easy displacement of nuts in poor visibility or limited space, and the tendency to strip threads if forcibly tightened, and the fact that existing washers are separate from the fasteners and are easily lost during use, this utility model provides a fastener that is easy to position.

[0006] The technical solution is as follows: A fastener for easy positioning includes a fastening bolt, a hexagonal screw head, a hexagonal nut, and a positioning guide shaft; one end of the fastening bolt is provided with a hexagonal screw head for providing a limit, the outer end of the fastening bolt is matched with a hexagonal nut for locking, the end of the fastening bolt away from the hexagonal screw head is provided with a positioning guide shaft for preventing the hexagonal nut from slipping, the end of the hexagonal screw head near the hexagonal nut is provided with a first pressure plate, the end of the hexagonal nut near the hexagonal screw head is provided with a second pressure plate corresponding to the first pressure plate, and the end of the hexagonal screw head away from the fastening bolt is provided with a hexagonal screw groove.

[0007] Furthermore, the outer end of the fastening bolt is provided with a male thread groove, the outer diameter of the positioning guide shaft is the same as the minor diameter of the male thread groove, and the outer end of the positioning guide shaft is provided with a guide bar.

[0008] Furthermore, there are four sets of guide bars, which are arranged around the outer end of the positioning guide shaft. The outer ends of the four sets of guide bars are all provided with arc surfaces, and the outer ends of the four sets of guide bars are all set with the same major diameter of the crest of the male thread groove.

[0009] Furthermore, the center of the hexagonal nut has a corresponding fastening bolt hole, and the inner wall of the hole has a female thread groove corresponding to the male thread groove.

[0010] Furthermore, the inner wall of the sleeve is provided with four sets of guide grooves corresponding to the guide strips, and the four sets of guide grooves penetrate the female thread groove.

[0011] Furthermore, rubber gaskets are fitted to the opposite sides of the first and second pressure plates, and an embedded ring groove is formed on the surface of the second pressure plate, with an anti-detachment ring groove formed on the bottom outer ring of the embedded ring groove.

[0012] Furthermore, the rubber gasket has a rubber insert ring with a corresponding insert ring groove on the side near the second pressure plate, and the bottom outer ring of the rubber insert ring has an anti-detachment retaining ring with a corresponding anti-detachment ring groove. The first pressure plate and the second pressure plate have the same configuration.

[0013] The beneficial effects are that, compared to existing fasteners, this application addresses the problems encountered in practical use by employing a positioning guide shaft, guide strip, and guide groove combination structure to achieve rapid positioning and precise docking of hexagonal nuts. In situations with poor visibility or limited operation, such as high-altitude operations or assembly in confined spaces, workers can quickly install and tighten the nuts without repeatedly adjusting their position, significantly shortening assembly time and reducing operational difficulty. It also effectively prevents nut misalignment, ensuring smooth and accurate thread engagement, thereby enhancing the connection strength between the fastener and the connected parts and improving the overall operational safety of the equipment. Furthermore, by using rubber insert rings and anti-loosening rings to fix the rubber washers on the first and second pressure plates, the phenomenon of washer loss is eliminated, ensuring the stability of fastener performance and simplifying installation steps. The rubber washers increase the friction between the pressure plates and the connecting parts, effectively preventing the fasteners from loosening due to vibration during use. Simultaneously, the rubber washers buffer the impact of vibration on the connection points, reducing damage to the connecting parts caused by vibration and extending the service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a three-dimensional structure of a fastener that is easy to position according to the present invention;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the bolt of this utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the hexagonal nut of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional view of the hexagonal nut and the second pressure plate of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Fastening bolt; 2. Hexagonal screw head; 3. Hexagonal nut; 4. Positioning guide shaft; 5. First pressure plate; 6. Second pressure plate; 7. Hexagonal screw groove; 8. Guide bar; 9. Male thread groove; 10. Sleeve hole; 11. Female thread groove; 12. Guide groove; 13. Rubber washer; 14. Embedded ring groove; 15. Anti-loosening ring groove; 16. Rubber embedded ring; 17. Anti-loosening retaining ring. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] Example

[0021] like Figures 1-4As shown, a fastener for easy positioning includes a fastening bolt 1, a hexagonal screw head 2, a hexagonal nut 3, and a positioning guide shaft 4. One end of the fastening bolt 1 is provided with a hexagonal screw head 2 for providing a limit, and the outer end of the fastening bolt 1 is matched with a hexagonal nut 3 for locking. The end of the fastening bolt 1 away from the hexagonal screw head 2 is provided with a positioning guide shaft 4 for preventing the hexagonal nut 3 from slipping. The end of the hexagonal screw head 2 near the hexagonal nut 3 is provided with a first pressure plate 5, and the end of the hexagonal nut 3 near the hexagonal screw head 2 is provided with a second pressure plate 6 corresponding to the first pressure plate 5. The end of the hexagonal screw head 2 away from the fastening bolt 1 is provided with a hexagonal screw groove 7.

[0022] The outer end of the fastening bolt 1 is provided with a male thread groove 9. The outer diameter of the positioning guide shaft 4 is the same as the minor diameter of the male thread groove 9. The outer end of the positioning guide shaft 4 is provided with a guide bar 8. The male thread groove 9 ensures that the fastening bolt 1 and the hexagonal nut 3 can be effectively threaded together to achieve the basic locking function. The outer diameter of the positioning guide shaft 4 is consistent with the minor diameter of the thread groove 9 to avoid the shaft diameter being too large and affecting the initial fitting of the hexagonal nut 3.

[0023] Four sets of guide bars 8 are provided, which are arranged around the outer end of the positioning guide shaft 4. The outer ends of the four sets of guide bars 8 are all provided with arc surfaces. The outer ends of the four sets of guide bars 8 are all set with the same major diameter of the crest of the male thread groove 9. The four sets of surrounding guide bars 8 can improve the guiding stability. The arc surface design can reduce the frictional resistance when the hexagonal nut 3 is fitted, and avoid installation difficulties caused by sharp corners. The outer ends of the guide bars 8 are the same as the major diameter of the crest of the thread, ensuring that the hexagonal nut 3 is always in the correct concentricity during the guiding process, laying the foundation for the smooth engagement of the threads.

[0024] The center of the hexagonal nut 3 is provided with a sleeve hole 10 corresponding to the fastening bolt 1. The inner wall of the sleeve hole 10 is provided with a female thread groove 11 corresponding to the male thread groove 9. The sleeve hole 10 provides space for the fastening bolt 1 to pass through. The female thread groove 11 matches the male thread groove 9, so that the two can be reliably locked through thread engagement, ensuring the connection strength of the fastener.

[0025] The inner wall of the sleeve hole 10 is provided with four sets of guide grooves 12 corresponding to the guide strip 8. The four sets of guide grooves 12 penetrate the female thread groove 11. Through the precise correspondence between the guide grooves 12 and the guide strip 8, the guide strip 8 can be guided to be smoothly inserted, realizing the rapid positioning of the hexagonal nut 3 and the fastening bolt 1. The guide grooves 12 penetrate the female thread groove 11, ensuring that the guide strip 8 can guide the hexagonal nut 3 to move throughout the process until it is fully engaged, avoiding the offset during the connection process, while simplifying the installation steps and improving the assembly efficiency.

[0026] Rubber washers 13 are fitted onto the opposite sides of the first pressure plate 5 and the second pressure plate 6. An embedded annular groove 14 is formed on the surface of the second pressure plate 6, and an anti-loosening annular groove 15 is formed on the bottom outer ring of the embedded annular groove 14. The rubber washers 13 can increase the friction between the pressure plate and the connecting parts, improve the anti-loosening effect of the fasteners, and at the same time buffer the impact of vibration on the connection parts. The embedded annular groove 14 provides positioning space for the installation of the rubber washers 13, and the anti-loosening annular groove 15 can prevent the rubber washers 13 from falling off during use, solving the problem of traditional washers being easily lost.

[0027] The rubber washer 13 has a rubber insert ring 16 corresponding to the insert ring groove 14 on the side near the second pressure plate 6. The bottom outer ring of the rubber insert ring 16 has an anti-detachment retaining ring 17 corresponding to the anti-detachment ring groove 15. The first pressure plate 5 and the second pressure plate 6 are configured in the same way. The rubber insert ring 16 cooperates with the insert ring groove 14 to achieve precise installation of the rubber washer 13. After the anti-detachment retaining ring 17 is inserted into the anti-detachment ring groove 15, it can firmly fix the rubber washer 13 on the second pressure plate 6, further preventing the washer from being lost.

[0028] When working, the workers first pass the end of the fastening bolt 1 with the hexagonal screw head 2 through the mounting hole of the part to be connected, so that the hexagonal screw head 2 is located on one side of the part to be connected, which serves as a limit.

[0029] Then, holding the hexagonal nut 3, align the sleeve hole 10 of the hexagonal nut 3 with the positioning guide shaft 4 at the end of the fastening bolt 1 away from the hexagonal nut head 2. Since the outer diameter of the positioning guide shaft 4 is the same as the minor diameter of the thread root 9, and the outer end is provided with four sets of guide strips 8 with arc surfaces, the hexagonal nut 3 can be smoothly fitted onto the positioning guide shaft 4. At this time, the four sets of guide grooves 12 on the inner wall of the sleeve hole 10 correspond precisely with the four sets of guide strips 8 on the positioning guide shaft 4, guiding the hexagonal nut 3 and the fastening bolt 1 to be precisely aligned.

[0030] Next, use a wrench to hold the hexagonal nut 3 in place and start to tighten it. During the tightening process, the guide bar 8 slides within the guide groove 12 to ensure that the hexagonal nut 3 does not shift until the female thread groove 11 of the hexagonal nut 3 is fully engaged with the male thread groove 9 of the fastening bolt 1, thus achieving reliable locking.

[0031] Its working principle is as follows: a positioning guide shaft 4 is set at the end of the fastening bolt 1 away from the hexagonal head 2, and four sets of guide strips 8 with arc surfaces are arranged around the outer end of the positioning guide shaft 4. At the same time, four sets of guide grooves 12 corresponding to the guide strips 8 are opened on the inner wall of the sleeve hole 10 of the hexagonal nut 3. When the hexagonal nut 3 is fitted onto the positioning guide shaft 4, the guide strips 8 and the guide grooves 12 cooperate with each other to provide a precise guiding effect for the hexagonal nut 3. Whether in poor visibility or space-constrained working conditions, it can ensure that the hexagonal nut 3 is accurately fitted onto the fastening bolt 1, avoiding the nut from being misaligned. The offset-induced thread stripping problem is improved, enhancing the accuracy and reliability of installation. The first pressure plate 5 and the second pressure plate 6 press the rubber washer 13 tightly onto the surface of the part to be connected. The rubber washer 13 increases the friction between the pressure plate and the part, preventing loosening and buffering the impact of vibration on the connection. The design of the embedded ring groove 14 and the anti-detachment ring groove 15 provides a precise installation position for the rubber washer 13, and the anti-detachment retaining ring 17 firmly fixes the rubber washer 13 to the pressure plate, solving the problem of traditional washers separating from fasteners and being easily lost.

[0032] Its beneficial effects are significant. This application achieves rapid positioning and precise docking of the hexagonal nut 3 through the cooperative structure of the positioning guide shaft 4, guide strip 8, and guide groove 12. In working conditions with poor visibility or limited operation, such as high-altitude operations or assembly in confined spaces, workers do not need to repeatedly adjust the nut position and can quickly complete the installation and tightening of the nut, greatly shortening the assembly time and reducing the difficulty of operation. At the same time, it effectively avoids the problem of nut misalignment, ensuring that the threads can be smoothly and accurately engaged, thereby enhancing the connection strength between the fastener and the connected parts and improving the overall operational safety of the equipment. The rubber embedded ring 16 and the anti-loosening ring 17 fix the rubber washer 13 on the first pressure plate 5 and the second pressure plate 6, eliminating the phenomenon of washer loss, ensuring the performance stability of the fastener, and simplifying the installation steps. The setting of the rubber washer 13 increases the friction between the pressure plate and the connecting parts, which can effectively prevent the fastener from loosening due to vibration during use. At the same time, the rubber washer 13 can also buffer the impact of vibration on the connection parts, reduce the damage to the connecting parts caused by vibration, and extend the service life of the equipment.

Claims

1. A fastener for easy positioning, comprising a fastening bolt (1); characterized in that, It also includes a hexagonal screw head (2), a hexagonal nut (3) and a positioning guide shaft (4); one end of the fastening bolt (1) is provided with a hexagonal screw head (2) for providing a limit, the outer end of the fastening bolt (1) is matched with a hexagonal nut (3) for locking, the end of the fastening bolt (1) away from the hexagonal screw head (2) is provided with a positioning guide shaft (4) for preventing the hexagonal nut (3) from slipping, the end of the hexagonal screw head (2) near the hexagonal nut (3) is provided with a first pressure plate (5), the end of the hexagonal nut (3) near the hexagonal screw head (2) is provided with a second pressure plate (6) corresponding to the first pressure plate (5), and the end of the hexagonal screw head (2) away from the fastening bolt (1) is provided with a hexagonal screw groove (7).

2. The fastener for easy positioning according to claim 1, characterized in that, The outer end of the fastening bolt (1) is provided with a male thread groove (9), the outer diameter of the positioning guide shaft (4) is the same as the minor diameter of the root of the male thread groove (9), and the outer end of the positioning guide shaft (4) is provided with a guide bar (8).

3. The fastener for easy positioning according to claim 2, characterized in that, The guide bar (8) is provided in four sets. The four sets of guide bars (8) are arranged around the outer end of the positioning guide shaft (4). The outer ends of the four sets of guide bars (8) are all provided with arc surfaces. The outer ends of the four sets of guide bars (8) are all set with the same major diameter of the crest of the male thread groove (9).

4. The fastener for easy positioning according to claim 3, characterized in that, The center of the hexagonal nut (3) is provided with a sleeve hole (10) corresponding to the fastening bolt (1), and the inner wall of the sleeve hole (10) is provided with a female thread groove (11) corresponding to the male thread groove (9).

5. A fastener for easy positioning according to claim 4, characterized in that, The inner wall of the sleeve hole (10) is provided with four sets of guide grooves (12) corresponding to the guide strips (8), and the four sets of guide grooves (12) pass through the female thread groove (11).

6. A fastener for easy positioning according to claim 2, characterized in that, Rubber gaskets (13) are attached to the opposite sides of the first pressure plate (5) and the second pressure plate (6). An embedded ring groove (14) is opened on the surface of the second pressure plate (6), and an anti-detachment ring groove (15) is opened on the bottom outer ring of the embedded ring groove (14).

7. A fastener for easy positioning according to claim 2, characterized in that, The rubber gasket (13) has a rubber insert ring (16) with a corresponding insert ring groove (14) on the side near the second pressure plate (6). The bottom outer ring of the rubber insert ring (16) has an anti-detachment retaining ring (17) with a corresponding anti-detachment ring groove (15). The first pressure plate (5) and the second pressure plate (6) have the same configuration.

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