A cross recess hexagonal shank tail bolt

Abstract

The utility model discloses a kind of cross recess hexagonal bundle tail tail bolt, belong to fastening connecting piece technical field, including screw cap, the bottom surface of the screw cap is connected with screw rod, one end of the screw rod is connected with screw head, the outer surface of the screw head is provided with discharge chute, the upper surface of the screw cap is provided with recess, the inner bottom wall of the recess is provided with cross groove, by screw cap is equipped with hexagonal shape and wipes angle, both adapt general hexagonal wrench, also avoid when installing side angle scratch operator or workpiece, improve operating safety;Upper surface recess cooperates cross groove, can be compatible cross screwdriver, satisfy different tool use demand, enhance installation flexibility.Screw rod is cylindrical structure and outer open helical thread groove, can be formed with connecting piece tight engagement, guarantee connection stability;Conical shape screw head is matched with outer surface discharge chute, can be quickly oriented positioning when installing, discharge impurity and chip in screw hole simultaneously, avoid impurity influence thread cooperation precision, improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fastening connectors, specifically a cross-shaped recessed hexagonal bolt with a tail cut-off end. Background Technology

[0002] Bolts play a crucial role as a commonly used fastener in various fields, including mechanical equipment, building structures, and the assembly of everyday items. However, traditional bolts have revealed some problems during use.

[0003] Currently, some bolts can only be installed and removed with a single tool. Moreover, due to the presence of impurities inside the pre-drilled holes, the bolts are prone to loosening, leading to a decrease in the stability of the connection and potentially causing safety accidents in severe cases. Therefore, those skilled in the art have provided a cross-shaped recessed hexagonal tail-cutting bolt to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a cross-shaped recessed hexagonal bolt with a tail cut-off end to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cross-shaped recessed hexagonal bolt with a ferrule cut-off end includes a nut, a lead screw connected to the bottom surface of the nut, a threaded end connected to one end of the lead screw, a discharge groove formed on the outer surface of the threaded end, a groove formed on the upper surface of the nut, and a cross groove formed on the inner bottom wall of the groove.

[0007] As a further improvement of this utility model: the nut is hexagonal in shape, and the outer surface of the lead screw is provided with a threaded groove.

[0008] As a further improvement of this utility model: the lead screw is made of alloy material, and the outer surface of the nut is electroplated with zinc-nickel alloy.

[0009] As a further improvement of this utility model: the nut has chamfered edges, and the threaded groove is spiral.

[0010] As a further embodiment of this utility model: the lead screw is cylindrical in shape, and the lead end is conical.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This type of cross-head recessed hexagonal bolt with chamfered end features a hexagonal shape and chamfered corners on the nut, making it compatible with general-purpose hex wrenches while preventing scratches to operators or workpieces during installation, thus improving operational safety. The upper surface groove, combined with the cross-head groove, is compatible with Phillips screwdrivers, meeting the needs of different tools and enhancing installation flexibility. The lead screw has a cylindrical structure with an externally opening helical thread groove, forming a tight engagement with the connecting parts and ensuring connection stability. The tapered thread end, combined with the external surface discharge groove, allows for quick guidance and positioning during installation, while simultaneously expelling impurities and debris from the threaded hole, preventing impurities from affecting the thread fit accuracy and improving assembly efficiency. In terms of materials, the lead screw is made of alloy material, ensuring overall strength and load-bearing capacity. Attached Figure Description

[0013] Figure 1 A three-dimensional structural schematic diagram of a cross-shaped recessed hexagonal bundled tail bolt;

[0014] Figure 2 A three-dimensional structural schematic diagram of a cross-shaped recessed hexagonal bundled tail cut-tail bolt, viewed from the side.

[0015] Figure 3 This is a top view of a cross-shaped recessed hexagonal bolt with a cut-off tail.

[0016] In the diagram: 1. Nut; 2. Lead screw; 3. Threaded groove; 4. Thread end; 5. Discharge groove; 6. Groove; 7. Cross groove. Detailed Implementation

[0017] Please see Figures 1-3 In this embodiment of the utility model, a cross-shaped recessed hexagonal bolt with a ferrule includes a nut 1, a lead screw 2 connected to the bottom surface of the nut 1, a lead end 4 connected to one end of the lead screw 2, a discharge groove 5 formed on the outer surface of the lead end 4, a groove 6 formed on the upper surface of the nut 1, and a cross groove 7 formed on the inner bottom wall of the groove 6. This not only facilitates the installation of the bolt, but also allows the bolt to automatically expel debris and air during the screwing process, thereby greatly increasing the stability of the bolt.

[0018] The nut 1 is hexagonal, and the outer surface of the screw 2 has a threaded groove 3. The screw 2 is made of alloy material, and the outer surface of the nut 1 is electroplated with zinc-nickel alloy. This not only makes it easier for people to operate the bolt, but also greatly increases the strength of the bolt.

[0019] The nut 1 has chamfered edges, the threaded groove 3 is spiral, the lead screw 2 is cylindrical, and the threaded end 4 is conical. This allows people to easily connect and position equipment using bolts, making construction more convenient.

[0020] The working principle of this utility model is as follows: First, the worker can achieve preliminary positioning through the conical threaded end 4. Its conical structure can be quickly inserted into the pre-drilled hole of the part to be connected, providing guidance for subsequent installation and reducing alignment time. Next, the nut 1 is applied with the help of an adapter tool: if a hex wrench is used, the hexagonal shape of the nut 1 can be used to tighten and apply force; if a Phillips screwdriver is used, the torque is transmitted through the Phillips groove 7 on the bottom wall of the groove 6 on the upper surface of the nut 1.

[0021] As the tool rotates, the nut 1 drives the lead screw 2 to rotate. The spiral groove 3 on the outer surface of the lead screw 2 engages with the internal thread of the hole wall of the part to be connected, converting the rotational motion into axial linear motion, allowing the lead screw 2 to gradually screw into the hole. During this process, the discharge groove 5 on the outer surface of the thread end 4 promptly discharges impurities, debris, and excess air from the hole, preventing impurities from getting stuck between the thread groove 3 and the internal thread and affecting the fitting accuracy. This ensures that the lead screw 2 smoothly screws into the pre-drilled hole. At the same time, the zinc-nickel alloy electroplated on the outer surface of the nut 1 provides corrosion protection during subsequent use, ensuring connection stability.

[0022] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cross-shaped recessed hexagonal bolt with a cut-off tail, characterized in that, Includes a nut (1), the bottom surface of which is connected to a lead screw (2), one end of which is connected to a threaded end (4), the outer surface of which is provided with a discharge groove (5), the upper surface of which is provided with a groove (6), and the inner bottom wall of which is provided with a cross groove (7).

2. The cross-shaped recessed hexagonal bolt with a cut-off tail according to claim 1, characterized in that, The nut (1) is hexagonal, and the outer surface of the lead screw (2) is provided with a threaded groove (3).

3. The cross-shaped recessed hexagonal bolt with a cut-off tail according to claim 1, characterized in that, The lead screw (2) is made of alloy material, and the outer surface of the nut (1) is electroplated with zinc-nickel alloy.

4. A cross-shaped recessed hexagonal bolt with a cut-off tail as described in claim 2, characterized in that, The nut (1) has chamfered edges, and the threaded groove (3) is spiral.

5. A cross-shaped recessed hexagonal bolt with a cut-off tail as described in claim 1, characterized in that, The lead screw (2) is cylindrical, and the lead end (4) is conical.

Images