A screw thread fitting

Abstract

The utility model discloses a screw thread fitting part relates to suspended ceiling decoration technical field, including the fitting body, be equipped with the assembly through -hole protruding from the surface on the fitting body, be equipped with the pitch shaping gap on the assembly through -hole, the assembly through -hole has the height difference at the pitch shaping gap, the assembly through -hole constitutes the screw thread structure with the pitch through the height difference at the pitch shaping gap. The utility model designs the assembly through -hole with screw thread structure, and this assembly through -hole is the non - conventional internal thread structure, can guarantee the assembly through -hole and bolt normal screw thread connection simultaneously, also solved the higher cost and the lower production efficiency of the technical problem of the processing thread hole because of tapping.

Description

Technical Field

[0001] This utility model relates to the field of ceiling decoration technology, specifically to a threaded fitting. Background Technology

[0002] Currently, in the decoration industry, nails and corner plate accessories are commonly used to install structural components such as ceilings, joists, ventilation ducts, water supply and drainage pipes, and cable trays. Specifically, nails are fixed to the corner plate, and a nail gun detonates a nail cartridge, driving the nail into the substrate, thus securing the corner plate. The corner plate also has threaded holes for bolts. Patent documents such as CN206010974U, CN207064426U, and CN221401288U disclose corner plate accessories with threaded holes. One end of the bolt is threaded into the threaded hole, and the other end is connected to the structural component to be installed, thus securing the component to the substrate. This method of fixing structural components using threaded holes and bolts offers advantages such as ease of operation and high efficiency, significantly improving construction efficiency.

[0003] However, careful research revealed that the process of machining threaded holes in the existing angle plate fittings is quite complex. First, a small hole needs to be punched into the angle plate body. Then, an extrusion process is used to machine the inner hole and outer boss of the threaded hole. Finally, a tapping process is used to machine the threaded hole. During this process, the taps used for tapping are easily damaged, and the tapping production efficiency is low. This leads to higher production costs and consequently reduces the product's competitiveness in the market.

[0004] Therefore, it is necessary to provide an alternative product that can meet the construction requirements but is also cheaper to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings and defects of the existing technology, this utility model proposes a threaded fitting. This utility model designs an assembly through hole with a threaded structure. This assembly through hole has an unconventional internal thread structure, which can ensure the normal threaded connection between the assembly through hole and the bolt, while also solving the technical problems of high cost and low production efficiency caused by tapping when machining threaded holes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A threaded fitting includes a fitting body with a protruding mounting through hole on its surface. The mounting through hole has a pitch-defined notch, and the mounting through hole has a height difference at the pitch-defined notch. The mounting through hole forms a threaded structure with a pitch through the height difference at the pitch-defined notch.

[0007] The assembly through hole is formed by punching and extruding on the body of the accessory. The assembly through hole on the protruding surface of the assembly body has a bevel, which has an outer diameter larger than the major diameter of the corresponding thread and an inner diameter the same as the minor diameter of the corresponding thread.

[0008] The thickness of the assembly through hole at the pitch shaping notch is the same as the crest width of the corresponding thread.

[0009] The inclination of the assembly through hole at the pitch shaping notch is the same as the tooth profile angle of the corresponding thread.

[0010] The assembly through hole is located at the end near the body of the accessory, and the pitch shaping notch is opened from the side of the assembly through hole away from the end toward the middle of the body of the accessory.

[0011] The pitch shaping notch is a V-shaped notch or a U-shaped notch.

[0012] The accessory body has at least one through hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The key innovation of this utility model lies in the use of an assembly through hole that does not require tapping but still has the function of threaded connection instead of the existing threaded hole. The assembly through hole can be formed directly by punching, extrusion, opening notches, and setting height differences at the notches. The formed assembly through hole has a pitch and helix that are compatible with the corresponding thread. While meeting the requirements of normal threaded connection with external bolts, it eliminates the complicated tapping process, which can not only avoid damage to the tap used for tapping, but also improve the opening efficiency of the assembly through hole, and correspondingly reduce the production cost of the product.

[0014] 2. This utility model has an outer diameter larger than the major diameter of the corresponding thread on the inclined surface. Its main advantage is that it facilitates easy entry of the bolt into the assembly through hole when connecting bolts. Having an inner diameter the same as the minor diameter of the corresponding thread on the inclined surface also has the advantage of facilitating easy entry of the corresponding thread on the bolt into the assembly through hole, and further enhances the tightness of the connection between the threaded structure and the corresponding thread on the bolt, maximizing the connection strength after the two are connected.

[0015] 3. In this utility model, the thickness of the assembly through hole at the pitch shaping notch is set to be the same as the crest width of the corresponding thread, and the inclination of the assembly through hole at the pitch shaping notch is set to be the same as the tooth profile angle of the corresponding thread. This makes the thread structure of the assembly through hole consistent with the angle of the corresponding thread, which helps to enhance the tightness of the thread and bolt connection and further improve the structural strength after the two are connected.

[0016] 4. This utility model has the advantage that by opening a notch on the assembly through hole from the side away from the end towards the middle of the accessory body, the assembly through hole can still maintain stable and reliable structural strength after the notch is opened by means of the structure of the accessory body, which is conducive to bearing more and heavier loads.

[0017] 5. This utility model uses a V-shaped notch or a U-shaped notch as the pitch shaping notch. One advantage is that it is easy to form the required pitch. Another advantage is that it is easy for the connecting bolt to enter the assembly through hole accurately. A third advantage is that it is easy to process, does not easily damage the mold, and helps to improve the service life of the mold.

[0018] 6. In this utility model, the accessory body is equipped with at least one through hole, which is beneficial for connecting multiple structural components at the same time and improves the applicable scenarios. Attached Figure Description

[0019] Figure 1 This is a plan view of the present invention from a top-down perspective; Figure 2 for Figure 1 AA sectional view of the structure; Figure 3 A planar structural diagram of a through-hole assembly on an assembly body; Figure 4 A planar structural diagram of the through-hole assembly on another assembly body; Figure 5 for Figure 3 A plan view of the structure in actual use; Figure 6 for Figure 4 A plan view of the structure in actual use.

[0020] The markings in the diagram are: 1. Part body, 2. Assembly through hole, 3. Pitch shaping notch, 4. Threaded structure, 5. Bevel, 6. Bolt. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] like Figures 1-4As shown, this utility model provides a threaded fitting, including a fitting body 1, which is preferably a metal part, but can also be a plastic part under certain working conditions. The fitting body 1 can be a straight structure, an L-shaped structure, a U-shaped structure, or other irregular structures, depending on the construction needs. The fitting body 1 has a protruding assembly through hole 2, which is formed by punching and then extruding a hole in the fitting body 1. Crucially, the assembly through hole 2 has a pitch shaping notch 3, which serves to interrupt the assembly through hole 2, changing it from a circular structure to an arc-shaped structure. The assembly through hole 2 has a height difference at the pitch shaping notch 3 (the two ends of the assembly through hole 2 formed after being broken by the pitch shaping notch 3 have a height difference). This height difference is formed by die extrusion, and the height difference dimension is the same as the thread pitch dimension of the bolt to be connected. The assembly through hole 2 forms a threaded structure 4 with a pitch through the height difference at the pitch shaping notch 3. This threaded structure 4 is equivalent to a single spiral line, which can play the role of threaded connection with bolt 6.

[0023] like Figures 1-2 As shown, in this utility model, the assembly through hole 2 protrudes from the surface of the accessory body 1 by extrusion, and on the protruding surface of the accessory body 1 ( Figure 2 The upper surface of the assembly through hole 2 has a bevel 5, which is formed by extrusion. The bevel 5 has an outer diameter larger than the major diameter of the corresponding thread and an inner diameter the same as the minor diameter of the corresponding thread. It facilitates the easy entry of the corresponding thread on the bolt into the assembly through hole, enhances the tightness of the connection between the thread and the corresponding thread on the bolt, and improves the structural strength after the connection is made.

[0024] like Figure 2 As shown, in this invention, the thickness of the assembly through hole 2 at the pitch shaping notch 3 is the same as the crest width of the corresponding thread on the bolt 6 to be connected, and the inclination of the assembly through hole 2 at the pitch shaping notch 3 is the same as the thread profile angle of the corresponding thread on the bolt 6 to be connected. This ensures that the thread structure of the assembly through hole 2 is consistent with the angle of the corresponding thread on the bolt 6 to be connected, thereby enhancing the tightness of the thread and bolt connection and further improving the strength of the connection structure.

[0025] Specifically, such as Figure 2 As shown, the height difference L1 between the two ends of the assembly through hole 2 at the pitch shaping notch 3 is the pitch of the thread structure 4, the inner diameter d of the inclined surface 5 is the minor diameter of the corresponding thread on the bolt 6 to be connected, the thickness L2 of the assembly through hole 2 at the pitch shaping notch 3 is the crest width of the corresponding thread on the bolt 6 to be connected, and the inclination a of the assembly through hole 2 at the pitch shaping notch 3 is the tooth profile angle of the corresponding thread on the bolt 6 to be connected.

[0026] like Figure 1As shown, in this utility model, the assembly through hole 2 is usually located near the end of the accessory body 1, which facilitates connection with the bolt 6 to fix the structural component to be installed. The pitch shaping notch 3 is opened from the side of the assembly through hole 2 away from the end towards the middle of the accessory body 1. With the help of the structure of the accessory body 1, the assembly through hole 2 can maintain a high rigidity and strength, avoiding a decrease in its structural strength due to the opening of the notch, which would affect its tensile strength.

[0027] Furthermore, the pitch shaping notch 3 is preferably a V-shaped notch or a U-shaped notch, which can achieve rapid processing of the notch without easily damaging the mold, and at the same time facilitates the formation of the required pitch so that the bolt 6 can accurately enter the assembly through hole.

[0028] In this utility model, the number of through holes 2 assembled on the accessory body 1 is at least one. Depending on actual needs, the number of through holes 2 assembled on the accessory body 1 can be one, two or more, etc.

[0029] Figure 5 , Figure 6 This utility model demonstrates the different methods employed. Figure 3 , Figure 4 The diagram shown is of the actual usage state of accessory body 1. Figure 5 , Figure 6 As can be seen, the accessory body 1 in this solution can be integrated with the nail gun into a single structure. In actual application, the nail gun is first used to drive the nail into the base to fix the accessory body 1 on the base. Then, the bolt 6 is screwed into the assembly through hole 2 through the threaded structure 4 to connect and fix the bolt 6 to the accessory body 1. Finally, the bolt 6 is fixed to the structural component to be installed.

[0030] It should be noted that the bolt 6 that is threadedly connected to the assembly through hole 2 in this utility model can also be a screw with a threaded section.

[0031] The connection strength of this utility model was then tested. Two methods were used in this test. The first method was to fasten the threaded body to the C30 cement substrate with a nail gun. The second method was to fasten the threaded body to an 8mm thick Q235 steel plate with a nail gun. Both were measured with a pull-out tester. During the measurement, the assembly through hole only deformed and bent when the pull-out force reached more than 100Kg. However, there was no slippage between the threaded body and the connecting bolt. This indicates that the threaded fitting provided by this utility model has a pull-out force that can reach the level of existing threaded holes and fully meets the construction needs.

[0032] As can be seen from the above tests, the assembly through hole 2 provided by this utility model can obtain a threaded connection structure with threaded structure 4 without tapping. Using the accessories of this utility model, while satisfying the normal threaded connection with the external bolt 6, it also eliminates the complicated tapping process. It has the advantages of avoiding damage to the tap used for tapping, improving the opening efficiency of the assembly through hole 2 and reducing the production cost of the product.

[0033] The above description is only a specific embodiment of this utility model. Any feature disclosed in this specification may be replaced by other equivalent features unless otherwise specified. All features or steps in all methods or processes disclosed may be combined in any way except for mutually exclusive features and / or steps.

Claims

1. A threaded fitting, comprising a fitting body (1), wherein the fitting body (1) is provided with a protruding mounting through hole (2), wherein the mounting through hole (2) is provided with a pitch shaping notch (3), wherein the mounting through hole (2) has a height difference at the pitch shaping notch (3), and the mounting through hole (2) forms a threaded structure (4) with a pitch through the height difference at the pitch shaping notch (3).

2. A threaded fitting according to claim 1, characterized in that: The assembly through hole (2) is formed by punching and extruding on the accessory body (1). The assembly through hole (2) on the protruding surface of the assembly body has a bevel (5). The bevel (5) has an outer diameter greater than the major diameter of the corresponding thread and an inner diameter the same as the minor diameter of the corresponding thread.

3. A threaded fitting according to claim 1 or 2, characterized in that: The thickness of the assembly through hole (2) at the pitch shaping notch (3) is the same as the crest width of the corresponding thread.

4. A threaded fitting according to claim 1 or 2, characterized in that: The inclination of the assembly through hole (2) at the pitch shaping notch (3) is the same as the tooth angle of the corresponding thread.

5. A threaded fitting according to claim 1, characterized in that: The assembly through hole (2) is located near the end of the accessory body (1), and the pitch shaping notch (3) is opened from the side of the assembly through hole (2) away from the end towards the middle of the accessory body (1).

6. A threaded fitting according to claim 1, characterized in that: The pitch shaping notch (3) is a V-shaped notch or a U-shaped notch.

7. A threaded fitting according to claim 1, characterized in that: The number of through holes (2) assembled on the accessory body (1) is at least one.

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