Hidden adjustable door shaft transmission structure

Abstract

The utility model relates to the technical field of transmission structures, in particular to a hidden type adjustable door shaft transmission structure which comprises a door leaf and a door frame, the door frame comprises a straight frame and cross beams arranged in parallel up and down, the frame and the cross beams are combined to form a frame-shaped structure, and the outer side of the frame-shaped structure is installed in a building wall in an embedded mode. An adjustable door shaft transmission structure is arranged between the upper end of the door leaf and the cross beam, a fixing shaft is arranged at the position, corresponding to the adjustable door shaft transmission structure, of the lower end of the door leaf, one end of the fixing shaft is perpendicularly inserted into the bottom end of the door leaf, and the lower end of the fixing shaft is perpendicularly fixed to the ground. According to the hidden adjustable door shaft transmission structure, the door shaft sleeve and the door shaft base are in sliding connection and separated design, free adjustment in the X direction, the Y direction and the Z direction can be achieved, operation is convenient, installation errors are reduced, abrasion is reduced, installation precision is improved, and silent door opening and closing are achieved; therefore, the overall service life is prolonged, cost is reduced, and economic benefits are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission structures, and in particular to a concealed adjustable door shaft transmission structure. Background Technology

[0002] Automatic swing doors are now very common in daily life, generally used in commercial residences, offices, hotels, hospitals, and other places. The most widely used type is the electric floor spring drive structure. Over time, the electric floor spring drive structure can rust and become eccentric due to moisture, dust, and impurities, leading to wear on the side walls. This causes the door to tilt during rotation, accelerating the damage to the door.

[0003] Later, through continuous research and improvement, the currently popular automatic swing doors were realized. They are usually equipped with electric swing door motors, whose motors and reduction gears are installed inside the crossbeam at the top of the door frame. During operation, the motor drives the door hinges through the drive shaft to open the door leaf from above. This solves the drawbacks of traditional electric floor springs. However, there are no mature door hinge accessories on the market. Due to the large weight of the door leaf and the very large instantaneous driving torque of the electric door motor, which drives repeatedly in both directions, unreasonable accessory design can cause misalignment, gaps, and deformation of the motor shaft structure. In severe cases, it can even cause safety problems. There is an urgent need to develop a door hinge accessory that is easy to install and adjust and safe. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: in order to solve the problems existing in the background technology, a hidden adjustable door shaft transmission structure is provided, which adopts a separate design with the door shaft sleeve and the door shaft base slidingly connected, which can realize free adjustment in three directions (XYZ), which is convenient to operate, reduces installation errors, reduces wear, improves installation accuracy, and realizes silent door opening and closing; thereby improving the overall service life, reducing costs, and improving economic benefits.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a concealed adjustable door shaft transmission structure, including a door leaf and a door frame. The door frame includes a straight side frame and a horizontal beam arranged vertically. The side frame and the horizontal beam are combined to form a frame structure. The outer side of the frame structure is embedded in the building wall. The door leaf is rotatably installed on the inner side of the frame structure. An adjustable door shaft transmission structure is provided between the upper end of the door leaf and the horizontal beam. A fixed shaft is provided at the lower end of the door leaf corresponding to the adjustable door shaft transmission structure. One end of the fixed shaft is vertically inserted into the bottom end of the door leaf, and the lower end of the fixed shaft is vertically fixed to the ground.

[0006] Further specifying, in the above technical solution, the adjustable door hinge transmission structure includes an electric swing door operator, a motor drive shaft, a door hinge sleeve, and a door hinge base; the electric swing door operator is embedded in the crossbeam, the output end of the electric swing door operator is connected to the motor drive shaft, one end of the motor drive shaft is movably inserted into the door hinge sleeve, the door hinge sleeve is movably mounted on the motor drive shaft, the outer side of the door hinge sleeve is movably engaged with the door hinge base, and the door hinge base is fixedly mounted on the upper surface of the door leaf; this design enables the door leaf and door frame to be used together through the adjustable door hinge transmission structure.

[0007] Furthermore, in the above technical solution, an installation groove is provided on the upper surface of the door leaf, and the door hinge base is embedded in the installation groove; this design is to achieve embedded and hidden installation of the door leaf base.

[0008] Furthermore, in the above technical solution, a door hinge decorative cover is installed on the side wall of the door hinge base.

[0009] Furthermore, in the above technical solution, the motor drive shaft has a square cross-section, the door sleeve has a T-shaped end face, a square base hole is vertically opened on the door sleeve, and the motor drive shaft is movably inserted into the square base hole; this design is to improve the stability during transmission, avoid the slippage phenomenon caused by traditional running connecting shafts, and improve transmission stability.

[0010] Furthermore, in the above technical solution, the end face of the door hinge base has an M-shaped structure; the square base hole on the door hinge sleeve is embedded in the M-shaped structure of the door hinge base; this design achieves the stability of its connection and avoids rotation during the three-stage adjustment process, and the locking position is achieved by snapping the shoulders of each other.

[0011] Furthermore, in the above technical solution, the two ends of the door hinge sleeve are symmetrically opened with an elongated oval groove on one side along the horizontal direction, and one or more sets of X-direction adjusting screws are inserted in the elongated oval grooves. The ends of the X-direction adjusting screws are connected to the side wall of the door hinge base; thus, the X-direction fine adjustment of the door hinge sleeve on the door hinge base can be realized.

[0012] Furthermore, in the above technical solution, an adjustment through hole is formed between the elongated oval grooves, and a Y-axis adjustment screw is inserted into the adjustment through hole. The end of the Y-axis adjustment screw is connected to the inner wall of the door hinge base; micro-adjustment in the Y direction can be achieved through the Y-axis adjustment screw.

[0013] The beneficial effects of this utility model are as follows: The concealed adjustable door shaft transmission structure proposed in this utility model adopts a separate design with the door shaft sleeve and the door shaft base slidingly connected, which can realize free adjustment in three directions (XYZ), making operation convenient, reducing installation errors, reducing wear, improving installation accuracy, and realizing silent door opening and closing; thereby improving the overall service life, reducing costs, and improving economic benefits. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 A top-view structural diagram;

[0017] Figure 3 yes Figure 1 A schematic diagram of the exploded structure;

[0018] Figure 4 yes Figure 1 An exploded structural diagram of the adjustable door shaft drive structure.

[0019] The labels in the attached diagram are as follows: 1. Door leaf, 2. Door frame, 3. Side frame, 4. Crossbeam, 5. Electric swing door operator, 6. Motor drive shaft, 7. Door hinge sleeve, 8. Door hinge base, 9. Mounting groove, 10. Door hinge decorative cover, 11. Square base hole, 12. Oblong groove, 13. X-direction adjusting screw, 14. Adjusting through hole, 15. Y-direction adjusting screw. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In this application, a T-shaped groove is formed in the elongated groove 12, and the X-direction adjusting screw 13 is inserted in the T-shaped groove for limiting; the electric swing gate motor 5 is purchased directly from the market according to the specific model and then matched and installed for use.

[0022] Figure 4 The middle arrow indicates the X, Y, and Z directions.

[0023] See Figure 1 and 4 The diagram shows a concealed adjustable door hinge drive structure, including a door leaf 1 and a door frame 2. The door frame 2 includes a straight side frame 3 and a horizontal beam 4 arranged vertically. The side frame 3 and the horizontal beam 4 are combined to form a frame structure. The outer side of the frame structure is embedded in the building wall. The door leaf 1 is rotatably installed on the inner side of the frame structure. An adjustable door hinge drive structure is set between the upper end of the door leaf 1 and the horizontal beam 4. A fixed shaft is set at the lower end of the door leaf 1 corresponding to the adjustable door hinge drive structure. One end of the fixed shaft is vertically inserted into the bottom end of the door leaf, and the lower end of the fixed shaft is vertically fixed to the ground.

[0024] The adjustable door hinge transmission structure includes an electric swing door operator 5, a motor drive shaft 6, a door hinge sleeve 7, and a door hinge base 8. The electric swing door operator 5 is embedded in the crossbeam 4. The output end of the electric swing door operator 5 is connected to the motor drive shaft 6. One end of the motor drive shaft 6 is movably inserted into the door hinge sleeve 7. The door hinge base 8 is movably engaged on the outer side of the door hinge sleeve 7 and is fixedly installed on the upper surface of the door leaf 1. A mounting groove 9 is provided on the upper surface of the door leaf 1, and the door hinge base 8 is embedded in the mounting groove 9. A door hinge decorative cover 10 is installed on the side wall of the door hinge base 8. The motor drive shaft 6 has a square cross-section, and the end face of the door hinge sleeve 7 has a T-shaped structure. A square base hole 11 is vertically provided on the door hinge sleeve 7, and the motor drive shaft 6 movably passes through the square base hole 11. The end face of the door hinge base 8 has an M-shaped structure; the square base hole 11 on the door hinge sleeve 7 is embedded in the M-shaped structure of the door hinge base 8. The door hinge sleeve 7 has symmetrically formed elongated oval grooves 12 with one side opening at both ends in the horizontal direction. One or more sets of X-direction adjusting screws 13 are inserted into the elongated oval grooves 12, and the ends of the X-direction adjusting screws 13 are connected to the side wall of the door hinge base 8. Adjusting through holes 14 are formed between the elongated oval grooves 12, and Y-direction adjusting screws 15 are inserted into the adjusting through holes 14. The ends of the Y-direction adjusting screws 15 are connected to the inner wall of the door hinge base 8.

[0025] The operating principle of this concealed adjustable door shaft drive structure is as follows:

[0026] First, the operator fixes the frame structure to the wall, then inserts the lower end of the door leaf 1 into the fixed shaft, and then installs the adjustable door hinge drive structure on the upper part of the door leaf 1. Specifically, the electric swing door 5 is fixed in place, the square base hole 11 is fitted onto the motor drive shaft 6, and the door leaf 1 is pushed by hand to push the T-shaped end of the door hinge sleeve 7 into the M-shaped groove of the door hinge base 8. At this time, only the lower part of the motor drive shaft 6 is inserted into the square base hole 11, and the lower end of the motor drive shaft 6 does not exceed the adjustment through hole 14. Therefore, the tightening and loosening of the Y-direction adjusting screw 15 will not interfere with the micro-adjustment of the motor drive shaft 6 in the Z-direction. During the tightening and loosening of the Y-direction adjusting screw 15, the door hinge sleeve 7 and the door hinge base 8 are interlocked, so they will not rotate, thus achieving micro-adjustment of their mutual spacing. The X-direction adjustment is achieved by limiting the X-direction adjusting screw 13.

[0027] The concealed adjustable door hinge drive structure of this application adopts a separate design for the door hinge sleeve 7 and the door hinge base 8, which are respectively installed in the mounting groove 9 on the upper end face of the door leaf 1 and the drive shaft 6 of the electric swing door operator 5. In use, the door hinge base 8 is installed in the mounting groove 9 on the upper end face of the door leaf 1 according to the pre-position, and the door hinge sleeve 7 is installed on the drive shaft 6 of the electric swing door operator 5. The door leaf 1 is installed on site with the ground hinge in the corresponding position. The door leaf is tilted so that the drive shaft with the door hinge sleeve is inserted into the door hinge base of the door leaf. At this time, the door hinge sleeve 7 can slide left, right and back and forth in the M-shaped groove of the door hinge base 8. By adjusting the bolts in the XYZ directions, the rotation axis of the upper and lower rotation centers of the door leaf 1 is ensured to coincide and the gap of the door leaf is reduced, so that the door can be opened and closed easily and repeatedly. The specific operation is as follows: In the X direction, the door hinge sleeve 7 is designed with an elongated oval groove 12, which can slide bidirectionally in the X direction. After adjustment, it is fixed with 4 M6 anti-reverse bolts; In the Y direction, the door hinge sleeve 7 is designed with a shoulder for positioning, which can be achieved by pressing against the base hole wall of the door hinge base with an M8 long bolt; In the Z direction, the door hinge sleeve 7 is designed with a square base hole 11, which allows the motor drive shaft 6 to slide in the square base hole 11. By using these three directions, the rotation axes of the upper and lower rotation centers of the door leaf 1 are made to coincide, thereby eliminating on-site installation and factory processing errors, and thus enabling the door leaf 1 to open freely.

[0028] The mounting base of the door hinge base 8 in this application features a recessed design in the center. After the Z-direction adjusting bolt is tightened, it is lower than the back, achieving a concealed function. Similarly, the door hinge sleeve 7 adopts the same design principle, with the XY-direction adjusting bolts concealed within the base after tightening. A separate door hinge decorative cover 10 with the company logo is designed on the outside. After the door leaf 1 is fully adjusted, the elastic buckle is pressed to form a single unit, thus solving the problems of torque transmission of the drive shaft and the aesthetic appearance of the door leaf.

[0029] Compared to traditional door hinge drive structures, this application offers the following advantages: the door hinge sleeve 7 and door hinge base 8 are designed separately with a sliding connection structure, allowing for XYZ three-way adjustment; the door hinge sleeve 7 and door hinge base 8 are installed and fixed independently, facilitating the positioning and adjustment of the on-site door hinge mounting base, resulting in higher installation accuracy; the rotation axis of the door leaf 1 can be adjusted to ensure complete overlap of the upper and lower rotation centers, resulting in uniform force distribution and quiet, noiseless opening and closing; the door hinge sleeve 7 features a completely closed design for reasonable force distribution. It is integrally cast, perfectly matching the motor drive shaft, and can slide up and down the motor drive shaft 6 to eliminate manufacturing and installation errors and reduce wear; the adjustable door hinge drive structure is designed with locking mechanisms to prevent loosening of the threads; the concealed installation structure can match any door frame material, offering both aesthetics and convenient installation; the compact design includes an external door hinge decorative cover 10, providing decorative and brand promotional effects; the symmetrical design is not limited by site conditions or the designed door opening direction; the separate design of the door hinge sleeve 7 and door hinge base 8 reduces costs and facilitates quick replacement during later maintenance.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A concealed adjustable door shaft transmission structure, characterized in that: The device includes a door leaf and a door frame. The door frame includes a straight side frame and horizontal beams arranged parallel to each other. The side frame and horizontal beams are combined to form a frame structure. The outer side of the frame structure is embedded in the building wall. The door leaf is rotatably mounted on the inner side of the frame structure. An adjustable door hinge drive structure is provided between the upper end of the door leaf and the horizontal beam. A fixed shaft is provided at the lower end of the door leaf corresponding to the adjustable door hinge drive structure. One end of the fixed shaft is vertically inserted into the bottom end of the door leaf, and the lower end of the fixed shaft is vertically fixed to the ground.

2. The concealed adjustable door shaft transmission structure according to claim 1, characterized in that: The adjustable door hinge transmission structure includes an electric swing door operator, a motor drive shaft, a door hinge sleeve, and a door hinge base. The electric swing door operator is embedded in the crossbeam. The output end of the electric swing door operator is connected to the motor drive shaft. One end of the motor drive shaft is movably inserted into the door hinge sleeve. The door hinge sleeve is movably mounted on the motor drive shaft. The door hinge base is movably engaged on the outer side of the door hinge sleeve. The door hinge base is fixedly mounted on the upper surface of the door leaf.

3. The concealed adjustable door shaft transmission structure according to claim 2, characterized in that: An installation groove is provided on the upper surface of the door leaf, and the door hinge base is embedded in the installation groove.

4. The concealed adjustable door shaft transmission structure according to claim 2, characterized in that: A decorative cover for the door hinge is installed on the side wall of the door hinge base.

5. The concealed adjustable door shaft transmission structure according to claim 2, characterized in that: The motor drive shaft has a square cross-section, the door bushing has a T-shaped end face, a square base hole is vertically opened on the door bushing, and the motor drive shaft is movably inserted into the square base hole.

6. The concealed adjustable door shaft transmission structure according to claim 5, characterized in that: The end face of the door hinge base has an M-shaped structure; the square base hole on the door hinge sleeve is embedded in the M-shaped structure of the door hinge base.

7. The concealed adjustable door shaft transmission structure according to claim 6, characterized in that: The door hinge sleeve has oblong grooves with one side opening symmetrically opened at both ends along the horizontal direction. One or more sets of X-direction adjusting screws are inserted in the oblong grooves, and the ends of the X-direction adjusting screws are connected to the side wall of the door hinge base.

8. The concealed adjustable door shaft transmission structure according to claim 7, characterized in that: An adjustment through hole is formed between the elongated oval grooves, and a Y-axis adjustment screw is inserted into the adjustment through hole. The end of the Y-axis adjustment screw is connected to the inner wall of the door hinge base.

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