Door frame assembly structure

Abstract

The utility model discloses a door frame assembly structure, including door frame, horizontal column and the connecting piece of door frame and horizontal column splicing fixed, the splicing part of door frame and horizontal column all are fixed with the location pin, the utility model introduces the initiative guide structure of location pin and location board spare, namely the round pad of location pin tail part and the first / second clamping slot (vertical distribution) width matching of location board spare, through the location of clamping slot to round pad, realize the accurate alignment of door frame, horizontal column, simultaneously, the bend angle alignment hole of location board spare and door frame positioning hole cooperate, further lock position, relative to prior art, the utility model positioning process changes from " depend on machining accuracy " to " mechanical structure forced guide ", and the splicing error is reduced greatly, and the positioning stability is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of door frame related technologies, specifically relating to a door frame assembly structure. Background Technology

[0002] Traditional high-end doors often use welding technology for their frames, where the upper horizontal bar is welded to the left and right side frames as a single unit. Due to structural limitations, the process is complex and cumbersome, resulting in low production efficiency and unstable quality. Moreover, the doors need to be assembled with the door leaf to form a complete door body before shipping. Due to the limitations of size and shape, the doors are large in size and weight, making them prone to damage such as bumps, scratches, jamming, and pressure during transportation, which increases packaging and transportation costs.

[0003] A search revealed that CN203729823U discloses a door frame assembly structure, comprising an upper horizontal frame and a side frame. The upper horizontal frame and side frame have identical frame shapes. The two ends of the upper horizontal frame are joined to the upper ends of the side frame at a 45-degree angle. A molded component is installed within the cavity at the joint. The contour shape of the side of the molded component that contacts the upper horizontal frame and side frame conforms to their respective shapes. The molded component has threaded holes through which screws pass, and the molded component is fixedly connected to the upper horizontal frame and side frame by screws. A floral pattern is provided on the other side of the molded component, conforming to the surface of the molded component. The pattern shape of the floral pattern matches the pattern shape of the upper horizontal frame and side frame, and the floral pattern is fixedly connected to the molded component by screws. This door frame assembly structure facilitates the installation and disassembly of the upper horizontal frame, left side frame, and right side frame of the assembled door, making transportation and on-site assembly convenient. Furthermore, the molded component precisely ensures the stability of the assembled door frame's shape.

[0004] The existing door frame assembly structure technology has the following problems: 1. The existing door frame assembly structure relies on the processing precision of the 45-degree chamfer and the fit between the auxiliary parts and the internal contour of the door frame to achieve positioning. If the chamfer is incorrect or the contour is mismatched, it is easy to cause misalignment during splicing. The positioning accuracy depends entirely on the control of processing error. 2. The existing door frame assembly structure is fixed in one direction only by the screws (first / second threaded holes) on the attachment. The force is concentrated at the contact point between the screw and the door frame. Long-term use is prone to loosening due to stress concentration. Utility Model Content

[0005] The purpose of this utility model is to provide a door frame assembly structure to solve the problems mentioned in the background art, such as the positioning accuracy relying entirely on processing error control and the loosening of fastening points due to stress concentration during long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a door frame assembly structure, including a door frame, a horizontal bar, and a connector for splicing and fixing the door frame and the horizontal bar, wherein positioning pins are fixed at the splicing parts of the door frame and the horizontal bar, and the connector includes: The positioning plate can be positioned using positioning pins on the door frame; The first fastener is used to fix the positioning plate after positioning, and the horizontal bar is spliced ​​to the door frame under the guidance of the positioning plate. The reinforcing plate is fitted onto the positioning pins of the rear door frame and the horizontal bar; The second fastener secures the door frame and crossbar by pressing and reinforcing the reinforcing plate.

[0007] Preferably, the end of the door frame is provided with a first beveled surface, and positioning holes are provided on both sides of the end of the door frame near the first beveled surface.

[0008] Preferably, the end of the horizontal bar is provided with a second oblique cut surface, and after the first oblique cut surface and the second oblique cut surface are spliced ​​together, the door frame and the horizontal bar form an L-shape.

[0009] Preferably, the positioning pin includes a pin head, and a round washer is fixed to the tail of the pin head.

[0010] Preferably, the positioning plate has a first groove and a second groove that are perpendicularly distributed, the round pad at the tail of the pin head matches the width of the first groove and the second groove, and the corner of the positioning plate has an alignment hole corresponding to the positioning hole.

[0011] Preferably, the reinforcing plate is arc-shaped, and a through hole is provided on the reinforcing plate for the pin head to pass through.

[0012] Preferably, the first fastener includes a cap nut and a nut threadedly connected to the cap nut, wherein the cap nut can pass through the positioning hole through the alignment hole.

[0013] Preferably, the second fastener includes a cap nut that is threadedly connected to a pin head.

[0014] Compared with the prior art, the present invention provides a door frame assembly structure, which has the following beneficial effects: 1. This utility model introduces an active guiding structure for positioning pins and positioning plates. Specifically, the width of the round pad at the tail of the positioning pin matches the width of the first / second slot (vertically distributed) of the positioning plate. By limiting the round pad through the slot, the precise alignment of the door frame and the horizontal bar is achieved. At the same time, the corner alignment hole of the positioning plate cooperates with the positioning hole of the door frame to further lock the position. Compared with the prior art, the positioning process of this utility model changes from "relying on processing precision" to "forced guidance by mechanical structure", which greatly reduces splicing errors and improves positioning stability. 2. This utility model adopts a dual structure of initial fixing and secondary reinforcement. The first fastener fixes the positioning plate through the alignment hole of the positioning plate to achieve stability in the initial stage of splicing. After splicing, the arc-shaped reinforcement plate is fitted on the positioning pins on both sides, and the reinforcement plate is pressed by the second fastener (cap nut). By utilizing the force-dispersing characteristics of the arc structure, the tensile force is evenly transmitted to the two positioning pins and the edge of the door frame, forming multi-point distributed force, thereby significantly improving the deformation resistance and solving the problem of easy loosening under single-point force in the prior art. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a partial schematic diagram of a door frame assembly structure proposed in this utility model; Figure 2 This is a partial structural diagram of the door frame proposed in this utility model; Figure 3 This is a schematic diagram of the horizontal bar structure proposed in this utility model; Figure 4 This is a schematic diagram of the positioning plate structure proposed in this utility model; Figure 5 This is a schematic diagram of the reinforced plate structure proposed in this utility model; In the diagram: 1. Door frame; 11. Positioning hole; 12. First beveled surface; 2. Horizontal bar; 21. Second beveled surface; 3. Positioning plate; 31. First slot; 32. Second slot; 33. Alignment hole; 4. Positioning pin; 41. Pin head; 42. Round washer; 5. First fastener; 6. Second fastener; 7. Reinforcing plate; 71. Through hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 This utility model provides a technical solution: a door frame assembly structure, including a door frame 1, a horizontal bar 2, and a connector for splicing and fixing the door frame 1 and the horizontal bar 2. The end of the door frame 1 is provided with a first oblique cut surface 12, and positioning holes 11 are opened on both sides of the end of the door frame 1 near the first oblique cut surface 12. The end of the horizontal bar 2 is provided with a second oblique cut surface 21. After the first oblique cut surface 12 and the second oblique cut surface 21 are spliced, the direction of the door frame 1 and the horizontal bar 2 is L-shaped.

[0018] Please see Figure 2 and Figure 3 The joint between the door frame 1 and the horizontal bar 2 is fixed with positioning pins 4. The positioning pin 4 includes a pin head 41 and a round pad 42 fixed at the tail of the pin head 41. The design of the positioning pin 4 with the round pad 42 can increase the contact area when it cooperates with the first slot 31 and the second slot 32, and prevent the positioning plate 3 from sliding.

[0019] Please see Figure 1 and Figure 4 The connector includes a positioning plate 3, a first fastener 5, a reinforcing plate 7, and a second fastener 6. The positioning plate 3 can be positioned by positioning pins 4 on the door frame 1. The positioning plate 3 has a first slot 31 and a second slot 32 that are vertically distributed. The round pad 42 at the tail of the pin head 41 matches the width of the first slot 31 and the second slot 32. The round pad 42 at the tail of the positioning pin 4 is designed to match the width of the first slot 31 and the second slot 32 (vertically distributed) of the positioning plate 3. By limiting the round pad 42 through the slots, the door frame 1 and the crossbar 2 are accurately aligned. The corner of the positioning plate 3 has an alignment hole 33 that corresponds to the positioning hole 11. The corner alignment hole 33 of the positioning plate 3 cooperates with the positioning hole 11 of the door frame to further lock the position.

[0020] Please see Figure 1 The first fastener 5 is used to fix the positioning plate 3 after positioning. The horizontal bar 2 is spliced ​​to the door frame 1 under the guidance of the positioning plate 3. The first fastener 5 includes a cap nut and a nut threadedly connected to the cap nut. The cap nut can pass through the positioning hole 11 through the alignment hole 33. The first fastener 5 fixes the positioning plate 3 through the alignment hole 33 of the positioning plate 3 to achieve stability in the initial stage of splicing.

[0021] Please see Figure 1 and Figure 5 The reinforcing plate 7 is fitted onto the positioning pins 4 of the door frame 1 and the horizontal bar 2 after the assembly. The reinforcing plate 7 is arc-shaped and has through holes 71 for the pin heads 41 to pass through. The arc design of the reinforcing plate 7 can fit more tightly with the L-shaped structure at the splicing of the door frame, thus improving the clamping effect.

[0022] Please see Figure 1 The second fastener 6 fixes the door frame 1 and the crossbar 2 by pressing the reinforcing plate 7. The second fastener 6 includes a cap nut, which is threaded to the pin head 41. After assembly, the arc-shaped reinforcing plate 7 is fitted onto the positioning pins 4 on both sides. The second fastener 6 (cap nut) presses the reinforcing plate 7, and the tensile force is evenly transmitted to the two positioning pins 4 and the door frame 1 by utilizing the force-distributing characteristics of the arc structure, thus forming a multi-point distributed force.

[0023] The working principle and usage process of this utility model are as follows: First, align the first slot 31 of the positioning plate 3 with the positioning pin 4 on the door frame 1, so that the round washer 42 of the positioning pin 4 is at the end of the first slot 31. Then, rotate the positioning plate 3 around the round washer 42 until the alignment hole 33 is aligned with the positioning hole 11 on the door frame 1. After the cap nut of the first fastener 5 passes through the alignment hole 33 and the positioning hole 11, it is fixed by the nut. Then, align the positioning pin 4 on the horizontal bar 2 with the first slot 31 of the positioning plate 3. The second slot 32 allows the round pad 42 of the positioning pin 4 to be positioned at the end of the second slot 32, so that the first beveled surface 12 of the door frame 1 can just abut against the second beveled surface 21 of the horizontal bar 2. At this time, the distance between the positions of the positioning pins 4 on the door frame 1 and the horizontal bar 2 is just enough to fit the reinforcing plate 7, so that the pin heads 41 of the two positioning pins 4 pass through the two through holes 71 on the reinforcing plate 7, and finally are threadedly connected to the pin heads 41 by the cap nut, thereby completing the assembly of the door frame 1 and the horizontal bar 2.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door frame assembly structure, comprising a door frame (1), a horizontal bar (2), and a connector for splicing and fixing the door frame (1) and the horizontal bar (2), characterized in that: The joint between the door frame (1) and the horizontal bar (2) is fixed with positioning pins (4), and the connector includes: The positioning plate (3) can be positioned by the positioning pins (4) on the door frame (1); The first fastener (5) is used to fix the positioning plate (3) after positioning. The horizontal bar (2) is spliced ​​to the door frame (1) under the guidance of the positioning plate (3). The reinforcing plate (7) is fitted onto the positioning pins (4) of the rear door frame (1) and the horizontal bar (2); The second fastener (6) secures the door frame (1) and the crossbar (2) by pressing the reinforcing plate (7).

2. The door frame assembly structure according to claim 1, characterized in that: The end of the door frame (1) is provided with a first oblique surface (12), and the two sides of the end of the door frame (1) are provided with positioning holes (11) close to the first oblique surface (12).

3. The door frame assembly structure according to claim 2, characterized in that: The end of the horizontal bar (2) is provided with a second oblique surface (21). After the first oblique surface (12) and the second oblique surface (21) are joined together, the door frame (1) and the horizontal bar (2) form an L-shape.

4. The door frame assembly structure according to claim 3, characterized in that: The positioning pin (4) includes a pin head (41), and a round washer (42) is fixed to the tail of the pin head (41).

5. A door frame assembly structure according to claim 4, characterized in that: The positioning plate (3) has a first slot (31) and a second slot (32) that are perpendicularly distributed. The round pad (42) at the tail of the pin head (41) matches the width of the first slot (31) and the second slot (32). The corner of the positioning plate (3) has a corresponding alignment hole (33) that corresponds to the positioning hole (11).

6. A door frame assembly structure according to claim 4, characterized in that: The reinforcing plate (7) is arc-shaped, and the reinforcing plate (7) has a through hole (71) for the pin head (41) to pass through.

7. A door frame assembly structure according to claim 5, characterized in that: The first fastener (5) includes a cap nut and a nut threadedly connected to the cap nut, wherein the cap nut can pass through the positioning hole (11) through the alignment hole (33).

8. A door frame assembly structure according to claim 4, characterized in that: The second fastener (6) includes a cap nut that is threaded to a pin head (41).

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