Armored door leaf door core hinge fixing structure

Abstract

The utility model relates to an armored door leaf door core hinge fixing structure which comprises a framework and a plurality of pressing rivet nuts arranged on the framework, the framework is made of a galvanized sheet, and the thickness of the framework is not smaller than 1.8 mm. The pressing rivet nut is directly riveted on the framework from the inner side of the framework, the pressing rivet nut is provided with a smaller-size end, and the smaller-size end enters a corresponding matching hole of the framework. The utility model has the advantages of relatively simple manufacturing process, high production efficiency, good product strength and the like.

Description

Technical Field

[0001] The utility model relates to a fixing structure between a door core of an armored door leaf and a door frame, in particular to a fixing structure of a door core hinge of an armored door leaf. Background Art

[0002] The door leaf and door core frame combination usually consists of the hinge side frame (i.e. the side with the hinge), the lock side frame (i.e. the side with the lock) and the upper and lower frames, i.e. 4 frames. Figure 1 As shown, the door leaf and door core frame assembly 10 is provided with four hinge connection positions 13 on the hinge edge frame. The specific structure of the hinge connection position is shown in FIG. Figure 2 and Figure 3 , consisting of a frame 11 and a hinge reinforcement plate 12. The frame is made of 1.0mm thick galvanized sheet, the hinge reinforcement plate is made of 3.0 thick steel plate, and the reinforcement plate 12 is welded to the frame 11. According to the position of the hinge fixing hole, punch holes and press rivet nuts 122 on the plate body 121 of the reinforcement plate 12, such as Figure 3 In order to align the hinge position with the door frame, a positioning tool is used to fix the reinforcement plate to the frame. The accessories include the frame, reinforcement plate, and riveted nuts. The equipment involved includes laser cutting machines, welders, and nut riveting machines. Welding requires welding tooling.

[0003] The whole process is relatively complicated, especially the welding process and the use of tooling, which greatly reduces production efficiency. Utility Model Content

[0004] The utility model aims to provide a fixing structure of an armored door leaf and door core hinge with simpler manufacturing process and higher production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides an armored door leaf and door core hinge fixing structure, comprising a frame and a plurality of rivet nuts arranged on the frame, wherein the frame is made of galvanized sheet and has a thickness of not less than 1.8 mm; the rivet nuts are directly riveted to the frame from the inner side of the frame, and the rivet nuts have a smaller end, and the smaller end enters the corresponding matching hole of the frame.

[0006] Furthermore, the rivet nuts can be divided into 2 to 6 groups, each group being used to connect a door hinge.

[0007] Furthermore, the rivet nut is of M5 model and above.

[0008] The beneficial effects of the utility model are:

[0009] Firstly, since the frame is made of galvanized sheet and its thickness is not less than 1.8 mm, the rivet nut is directly riveted to the frame from the inner side of the frame, thus eliminating the reinforcement plate and the process of welding the reinforcement plate in the prior art;

[0010] Secondly, the rivet nut has a smaller end, and the smaller end enters the corresponding matching hole of the frame, which can not only hide the large end of the rivet nut in the frame to keep the appearance of the frame beautiful, but also make the rivet nut tightly pulled against the frame when working, so as to improve the firmness;

[0011] Thirdly, since the frame is made of plates with a thickness of more than 1.8 mm, the strength of the frame is greatly improved;

[0012] Fourthly, the use of riveting technology eliminates welding, greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of a door leaf and door core frame combination in the prior art.

[0014] Figure 2 The present invention is a schematic diagram of a fixing structure of a hinge of an armored door leaf core in the prior art.

[0015] Figure 3 for Figure 2 Schematic diagram of the center hinge reinforcement plate.

[0016] Figure 4 It is a schematic diagram of the fixing structure of the door core hinge of the armored door leaf of the present invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Implementation

[0018] The hinge fixing structure of the armored door leaf and door core of the utility model is as follows Figure 4 , including a frame 21 and a plurality of rivet nuts 22 arranged on the frame. The frame 21 is made of galvanized sheet and its thickness is not less than 1.8 mm. The frame is made of sheet with a thickness of 1.8 mm or more, and the hinge edge of the door leaf has sufficient strength and will not sag after the door leaf is installed.

[0019] The skeleton 21 is cut and various holes are processed at one time by a laser cutting machine, which ensures the dimensional accuracy of each matching hole. The rivet nut 22 is directly riveted on the skeleton from the inner side of the skeleton. The rivet nut 22 has a smaller end, and the smaller end enters the corresponding matching hole 24 of the skeleton. The riveting is done by a nut riveting machine.

[0020] In this embodiment, four rivet nuts 22 form a group and are connected to a hinge. For the entire door frame assembly, the rivet nuts can be divided into 2 to 6 groups, each group is used to connect a door hinge. The rivet nuts are M5 and above, so that a good connection strength can be guaranteed. The connection holes and connection nuts 23 for the frame assembly are preferably synchronized with the hinge fixing structure, so that the production efficiency can be greatly improved.

[0021] In this way, the equipment involved in the utility model is only a laser cutting machine and a nut riveting machine, and no welding equipment is required. At the same time, the number of components is reduced, which has many benefits.

[0022] Finally, it should be emphasized that the present invention is not limited to the above-mentioned implementation mode. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An armored door leaf and door core hinge fixing structure, comprising a frame and a plurality of rivet nuts arranged on the frame, characterized in that: The frame is made of galvanized sheet, and its thickness is not less than 1.8 mm; the rivet nut is directly riveted on the frame from the inner side of the frame, and the rivet nut has a smaller end, and the smaller end enters the corresponding matching hole of the frame.

2. The hinge fixing structure for the armored door leaf and core according to claim 1 is characterized in that: The rivet nuts can be divided into 2 to 6 groups, each group being used to connect a door hinge.

3. The hinge fixing structure for the armored door leaf and door core according to claim 2 is characterized in that: The rivet nuts are of M5 size or larger.

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