Connecting and locking mechanism of metal combined door frame

Abstract

The utility model belongs to a connecting and locking mechanism of a metal combined door frame, which is characterized in that a countersunk bolt hole is arranged on a main frame, and a sealing groove is arranged at the upper end of the right side of the main frame; mounting holes are formed in the vertical surfaces of the left side and the middle of the auxiliary frame, connecting and locking steel sheets are mounted in the mounting holes, threaded holes are formed in the middles of the connecting and locking steel sheets, and the main frame and the auxiliary frame are fixed together through countersunk screws in countersunk bolts and the threaded holes. The utility model has the advantages of simple structure, convenience and quickness in assembly and disassembly, and good heat-preservation, heat-insulation and sound-insulation effects.

Description

Technical Field

[0001] The utility model belongs to the locking mechanism of a door frame, and particularly relates to a connecting and locking mechanism for a metal combined door frame. Background Art

[0002] The connection method of this type of combined structure of the main frame and the auxiliary frame is usually as follows: at the position of the connection hole of the auxiliary frame corresponding to the connection part (precast connection hole) of the main frame, a threaded hole for precast connection is made. When the main frame and the auxiliary frame are combined, flat head screws are used for connection. This connection method has the following two main defects: First, the manufacturing process of the precast threaded hole for fixing on the auxiliary frame is relatively cumbersome, requiring not only high manufacturing precision but also no adjustment space; Second, the head of the connection screw is exposed. If the gap adjustment caused by manufacturing errors is to be realized during assembly, larger diameter holes need to be precast at the connection of the main frame, which affects the appearance quality of the product and is not beautiful. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical deficiencies, and provide a connecting and locking mechanism for a metal combined door frame, in which the upper and lower ends of the main frame and the auxiliary frame are fixed together with countersunk head screws and connection locking steel sheets, with simple process, high manufacturing precision, high product quality, and beautiful appearance.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a connecting and locking mechanism for a metal combined door frame, including a special-shaped main frame and an auxiliary frame, characterized in that countersunk head bolt holes are provided on the main frame, and a sealing groove is provided at the upper right end; mounting holes are provided on the vertical surface on the left side of the auxiliary frame, connection locking steel sheets are installed in the mounting holes, threaded holes are provided in the middle of the connection locking steel sheets, and the main frame and the auxiliary frame are fixed together with countersunk head screws in the countersunk head bolt holes and the threaded holes.

[0005] The right end of the connection locking steel sheet is provided with an α angle, the α angle is 10° to 20°, and the connection locking steel sheet above the α angle is provided with serrations.

[0006] The beneficial effect of the utility model is: the utility model uses connection locking steel sheets to make the combination of the door frame convenient and fast, the gap can be finely adjusted, the combination of the main frame and the auxiliary frame realizes high-strength combination, and presents more perfect decoration. Brief Description of the Drawings

[0007] The following is specifically described with reference to the accompanying drawings and embodiments.

[0008] Figure 1 is the front view of a connecting and locking mechanism for a metal combined door frame;

[0009] Figure 2 is Figure 1 the A-A cross-sectional view of

[0010] Figure 3 is Figure 1 the right side view of

[0011] In the figure: 1 - main frame; 1 - 1 - countersunk bolt hole; 1 - 2 - sealing groove; 2 - countersunk screw; 3 - sealing strip; 4 - auxiliary frame; 4 - 1 - mounting hole; 5 - connecting and locking steel sheet; 5 - 1 - serration; 5 - 2 - threaded hole. Specific implementation manner

[0012] Embodiment, referring to the attached drawings, a connecting and locking mechanism for a metal combined door frame, comprising a special-shaped main frame 1 and an auxiliary frame 4, characterized in that a countersunk bolt hole 1 - 1 is provided on the main frame 1, and a sealing groove 1 - 2 is provided at the upper right end; a mounting hole 4 - 1 is provided on the vertical surface on the left side of the auxiliary frame 4, a connecting and locking steel sheet 5 is installed in the mounting hole 4 - 1, a threaded hole 5 - 2 is provided in the middle of the connecting and locking steel sheet 5, and the main frame 1 and the auxiliary frame 4 are fixed together with a countersunk screw 2 in the countersunk bolt hole 1 - 1 and the threaded hole 5 - 2.

[0013] The right end of the connecting and locking steel sheet 5 is provided with an α angle, the α angle is 15°, and the connecting and locking steel sheet 5 above the α angle is provided with a serration 5 - 1.

[0014] A sealing strip 3 is installed in the sealing groove 1 - 2.

[0015] The serration 5 - 1 with the right end of the connecting and locking steel sheet 5 of the present utility model bent upward serves to increase the contact strength of the force application points by the serration shape, especially when the thickness of the door leaf increases or the installation conditions are poor, and the same applies to the angular serrated holes of the auxiliary frame.

Claims

1. A connection and locking mechanism for a metal combined door frame, comprising a special-shaped main frame (1) and an auxiliary frame (4), characterized in that A countersunk bolt hole (1-1) is provided on the main frame (1), and a sealing groove (1-2) is provided on the upper right end; a mounting hole (4-1) is provided on the left side and the middle vertical surface of the auxiliary frame (4); a connecting and locking steel sheet (5) is installed in the mounting hole (4-1); a threaded hole (5-2) is provided in the middle of the connecting and locking steel sheet (5); countersunk screws (2) are used in the countersunk bolt hole (1-1) and the threaded hole (5-2) to fix the main frame (1) and the auxiliary frame (4) together.

2. A connection and locking mechanism for a metal combined door frame according to claim 1, characterized in that The right end of the connecting and locking steel sheet (5) is provided with an angle α, the angle α is 10° to 20°, and the connecting and locking steel sheet (5) above the angle α is provided with a sawtooth shape (5-1).

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