Half-round head inner plum blossom screw

Abstract

The utility model relates to the technical field of screws, in particular to a cup head inner plum blossom screw which comprises a nut, a built-in nail, a protection assembly and a threaded cylinder, the threaded cylinder is fixedly connected with the built-in nail, the built-in nail is fixedly connected with the nut, the protection assembly comprises a gasket, a spring and an anti-disengaging ring, the anti-disengaging ring is fixedly connected with the nut, one end of the spring is fixedly connected with the nut, and the other end of the spring is fixedly connected with the nut. The gasket can protect an installed hole groove, friction between the gasket and the hole groove can be increased when the plum blossom cap and the cylinder body are rotated, stability is kept, production is facilitated through the design, and the problems that in the detaching process of a screw, an installed screw hole is prone to being damaged, and the service life of the screw is prolonged are solved. And subsequent reinstallation and attractiveness are affected.

Description

Technical Field

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

[0002] When a screw is tightened in a screw hole for a long time, it may become difficult to remove due to rust or foreign matter. Currently, the screw is loosened by adding lubricating oil. However, since the screw is tightly combined with the screw hole, lubricating oil is difficult to penetrate, and a large amount of foreign matter is easily blocked in the screw slot, which brings inconvenience to the disassembly and assembly of the screw.

[0003] In the prior art, patent (CN216199678U) proposes a plum blossom semicircular head with a step machine screw, comprising a screw, the screw comprising a semicircular head, a step and a threaded section arranged in sequence from back to front, the semicircular head also having two symmetrical grooves, two symmetrical oil inlet channels provided in the semicircular head, and a vertical connecting channel provided in the threaded section; the plum blossom semicircular head with a step machine screw facilitates the injection of lubricating oil into the interior of the screw hole through the provided grooves, oil inlet channels, connecting channels and oil outlet channels, thereby facilitating the rapid penetration of lubricating oil into the interior of the screw hole, and further facilitating the disassembly of the clamped step screw; the plum blossom semicircular head with a step machine screw is provided with an anti-blocking mechanism; that is, under the action of the shell, when the step screw is not in use, the shell can effectively prevent foreign matter from clogging the screw slot, thereby facilitating the disassembly and assembly of the step screw.

[0004] However, in the above-mentioned prior art, the screws are likely to damage the screw holes during the disassembly process, affecting the subsequent re-installation and the appearance. Utility Model Content

[0005] The purpose of the utility model is to provide a semicircular head internal hexagon screw, which solves the problem in the prior art that the screw is easy to damage the installation screw hole during the disassembly process, affecting the subsequent re-installation and aesthetics.

[0006] To achieve the above-mentioned purpose, the utility model provides a semi-circular head internal hexagon screw, comprising a nut, a built-in nail, a protective assembly and a threaded barrel, wherein the threaded barrel is fixedly connected to the built-in nail and is located on the circumferential side of the built-in nail, the built-in nail is fixedly connected to the nut and is located below the nut, the protective assembly comprises a gasket, a spring and an anti-slip ring, the anti-slip ring is fixedly connected to the nut and is located on the circumferential side of the nut, one end of the spring is fixedly connected to the nut and is located below the nut, the other end of the spring is fixedly connected to the gasket and is located above the gasket, and the gasket is slidably connected to the nut and is located below the nut.

[0007] The nut includes a plum blossom cap and a cylinder, the upper end of the cylinder is fixedly connected to the plum blossom cap and is located below the plum blossom cap, and the lower end of the cylinder is fixedly connected to the built-in nail and is located at the upper end of the built-in nail.

[0008] The built-in nail includes a nail body and a round tail, the round tail is fixedly connected to the nail body and is located at the lower end of the nail body, and the upper end of the nail body is fixedly connected to the cylinder and is located at the lower end of the cylinder.

[0009] The threaded barrel includes a barrel and an adaption ring, wherein the adaption ring is fixedly connected to the barrel and located above the barrel, and the barrel is fixedly connected to the nail body and located on the peripheral side of the nail body.

[0010] Among them, the semi-circular head internal plum blossom screw also includes a protective cover, multiple anti-slip strips and a toggle wire. The toggle wire is fixedly connected to the protective cover and is located above the protective cover. Each of the anti-slip strips is fixedly connected to the protective cover and is located above the protective cover. The protective cover is movably connected to the plum blossom cap and is located above the plum blossom cap.

[0011] The utility model discloses a semicircular head internal plum blossom screw, the gasket currently provided can protect the installation hole groove, and at the same time, when the plum blossom cap and the cylinder are rotated, the friction with the hole groove is further increased to maintain stability. This design is convenient for production and solves the problem that the screw hole for installation is easily damaged during the disassembly process, which affects the subsequent re-installation and aesthetics. The toggle wire is a soft short wire. The setting of each anti-slip strip can increase the friction of the staff's hands when installing and fitting the protective cover on the plum blossom cap, thereby preventing the protective cover from falling off. The setting of the protective cover can protect the plum blossom groove on the plum blossom cap, preventing foreign matter from falling in and hindering the subsequent disassembly of the plum blossom cap. When the protective cover needs to be removed, it can be removed by pulling the toggle wire. Solid glue is provided inside the protective cover so that it can fit on top of the plum blossom cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0013] Figure 1 It is a front view of the first embodiment of the present utility model.

[0014] Figure 2 This utility model Figure 1 AA line section view.

[0015] Figure 3 This utility model Figure 2A magnified view of the local structure at point B.

[0016] Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0017] 101- nut, 102- built-in nail, 103- protective assembly, 104- threaded barrel, 105- gasket, 106- spring, 107- anti-slip ring, 108- plum blossom cap, 109- cylinder, 110- nail body, 111- round tail, 112- barrel body, 113- adaptation ring, 201- protective cover, 202- anti-slip strip, 203- toggle wire. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] The first embodiment of this application is:

[0020] See also Figure 1-Figure 3 ,in Figure 1 This is a front view of the first embodiment of the utility model. Figure 2 This utility model Figure 1 AA line section view, Figure 3 This utility model Figure 2 A magnified view of the local structure at point B.

[0021] The utility model provides a semicircular head internal hexagon screw, comprising a nut 101, an internal nail 102, a protective component 103 and a threaded barrel 104, wherein the protective component 103 comprises a gasket 105, a spring 106 and an anti-slip ring 107, the nut 101 comprises a hexagonal cap 108 and a cylinder 109, the internal nail 102 comprises a nail body 110 and a round tail 111, and the threaded barrel 104 comprises a barrel body 112 and an adaption ring 113.

[0022] According to this specific embodiment, the threaded barrel 104 is fixedly connected to the built-in nail 102, the built-in nail 102 is fixedly connected to the nut 101, the anti-slip ring 107 is fixedly connected to the nut 101, one end of the spring 106 is fixedly connected to the nut 101, the other end of the spring 106 is fixedly connected to the gasket 105, the gasket 105 is slidably connected to the nut 101, the upper end of the cylinder 109 is fixedly connected to the plum blossom cap 108, and the lower end of the cylinder 109 is fixedly connected to the built-in nail 102. The round tail 111 is fixedly connected to the nail body 110, the upper end of the nail body 110 is fixedly connected to the cylinder 109, the adaption ring 113 is fixedly connected to the cylinder 112, and the cylinder 112 is fixedly connected to the nail body 110. The gasket 105 currently provided can protect the installation hole groove, and at the same time, when the plum blossom cap 108 and the cylinder 112 are rotated, the friction with the hole groove can be increased to maintain stability. This design is easy to produce and solves the problem that the screws are likely to damage the installation screw holes during disassembly, affecting the subsequent re-installation and aesthetics.

[0023] The threaded barrel 104 is located on the circumferential side of the built-in nail 102, the built-in nail 102 is located below the nut 101, the anti-slip ring 107 is located on the circumferential side of the nut 101, one end of the spring 106 is located below the nut 101, and the other end of the spring 106 is located above the gasket 105, and the gasket 105 is located below the nut 101. When the plum blossom cap 108 is rotated and installed, as the cylinder 109 and the barrel 112 gradually move downward, when the barrel 112 After being completely rotated into the hole groove, continue to rotate the plum blossom cap 108. The plum blossom cap 108 applies pressure to the spring 106 and abuts against the gasket 105. After the final installation is completed, only the gasket 105 and the plum blossom cap 108 are exposed. The anti-slip ring 107 can protect the spring 106 from popping out from under the plum blossom cap 108. When the plum blossom cap 108 needs to be removed, the gasket 105 can also protect the installed hole groove to avoid damage to the external surface caused by rotating the plum blossom cap 108, which affects the appearance.

[0024] Secondly, the upper end of the cylinder 109 is located below the plum blossom cap 108, the lower end of the cylinder 109 is located at the upper end of the built-in nail 102, the round tail 111 is located at the lower end of the nail body 110, and the upper end of the nail body 110 is located at the lower end of the cylinder 109. The setting of the round tail 111 can reduce the contact area with the installation part when installing the cylinder 112 and the nail body 110, so as to better rotate the cylinder 112. The interior of the cylinder 109 and the nail body 110 both have pipes for lubricating oil to pass through. When disassembling the cylinder 112, first drip in an appropriate amount of lubricating oil, and the lubricating oil flows from the pipe to the round tail 111 and the cylinder 109, reducing friction and facilitating rotation by the staff.

[0025] At the same time, the adaptation ring 113 is located above the cylinder 112, and the cylinder 112 is located on the circumferential side of the nail body 110. The diameter of the lower side of the adaptation ring 113 is smaller than the diameter of the upper side. When the thread on the cylinder 112 rotates into the hole groove, the setting of the adaptation ring 113 can play a role in supporting the hole groove when the cylinder 112 moves downward to the bottom, better supporting the hole groove, and maintaining the stability of the cylinder 112 and the nail body 110 after installation.

[0026] The anti-drop ring 107 can protect the spring 106 from popping out from under the plum blossom cap 108, and when the plum blossom cap 108 needs to be removed, the gasket 105 can also prevent the installation hole from being damaged. The screw thread 112 is provided with a screw thread 114 and a screw thread 115, and the screw thread 116 is provided with a screw thread 117. The screw thread 114 is provided with a screw thread 118, and the screw thread 119 is provided with a screw thread 119.

[0027] The second embodiment of this application is:

[0028] Based on the first embodiment, please refer to Figure 4 ,in Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0029] The utility model provides a semicircular head internal hexagon screw, which also includes a protective cover 201, a plurality of anti-slip strips 202 and a toggle wire 203.

[0030] The protective cover 201 is fixedly connected to the protective cover 201 and is located above the protective cover 201. Each of the anti-slip strips 202 is fixedly connected to the protective cover 201 and is located above the protective cover 201. The protective cover 201 is movably connected to the plum blossom cap 108 and is located above the plum blossom cap 108. The toggle line 203 is a soft short line. The setting of each anti-slip strip 202 can increase the friction of the hands of the staff when installing and fitting the protective cover 201 on the plum blossom cap 108, thereby preventing the protective cover 201 from falling off. The setting of the protective cover 201 can protect the plum blossom groove on the plum blossom cap 108, preventing foreign matter from falling into and hindering the subsequent disassembly of the plum blossom cap 108. When the protective cover 201 needs to be removed, it can be removed by pulling the toggle line 203. Solid glue is provided inside the protective cover 201, so that it can fit above the plum blossom cap 108.

[0031] In this embodiment, the toggle line 203 is a soft short line. The setting of each anti-slip strip 202 can increase the friction of the staff's hands when installing and fitting the protective cover 201 on the plum blossom cap 108, thereby preventing the protective cover 201 from falling off. The setting of the protective cover 201 can protect the plum blossom groove on the plum blossom cap 108, preventing external impurities from falling into and hindering the subsequent disassembly of the plum blossom cap 108. When the protective cover 201 needs to be removed, it can be removed by pulling the toggle line 203. Solid glue is provided inside the protective cover 201, so that it can fit on top of the plum blossom cap 108.

[0032] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A hexagon socket head screw, comprising a nut, an internal nail and a threaded barrel, wherein the threaded barrel is fixedly connected to the internal nail and is located on the peripheral side of the internal nail, and the internal nail is fixedly connected to the nut and is located below the nut, characterized in that: It also includes a protective component, which includes a gasket, a spring and an anti-slip ring. The anti-slip ring is fixedly connected to the nut and is located on the circumferential side of the nut. One end of the spring is fixedly connected to the nut and is located below the nut. The other end of the spring is fixedly connected to the gasket and is located above the gasket. The gasket is slidably connected to the nut and is located below the nut.

2. The hexagon socket screw according to claim 1, wherein: The nut includes a plum blossom cap and a cylinder, the upper end of the cylinder is fixedly connected to the plum blossom cap and is located below the plum blossom cap, and the lower end of the cylinder is fixedly connected to the built-in nail and is located at the upper end of the built-in nail.

3. The hexagon socket screw according to claim 2, wherein: The built-in nail includes a nail body and a round tail, the round tail is fixedly connected to the nail body and is located at the lower end of the nail body, and the upper end of the nail body is fixedly connected to the cylinder and is located at the lower end of the cylinder.

4. The hexagon socket screw according to claim 3, wherein: The threaded barrel includes a barrel and an adaption ring. The adaption ring is fixedly connected to the barrel and located above the barrel. The barrel is fixedly connected to the nail body and located on the peripheral side of the nail body.

5. The hexagon socket screw according to claim 4, characterized in that: The semicircular head inner plum screw also includes a protective cover, multiple anti-slip strips and a toggle wire. The toggle wire is fixedly connected to the protective cover and is located above the protective cover. Each of the anti-slip strips is fixedly connected to the protective cover and is located above the protective cover. The protective cover is movably connected to the plum blossom cap and is located above the plum blossom cap.

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