Anti-bulging door leaf structure

Abstract

The utility model relates to the technical field of security doors, in particular to an anti-bulging door leaf structure which comprises a door leaf frame body, a front door plate and a rear door plate, the front door plate and the rear door plate are arranged in a front-back spaced mode, the door leaf frame body is arranged on the periphery of the front door plate and the periphery of the rear door plate in a sleeving mode, and the door leaf frame body comprises an inner frame body and an outer frame body which are made of aluminum profiles. The inner frame body and the outer frame body are respectively provided with a frame body positioning groove and a frame body positioning block along the length direction of the profile, the inner frame body and the outer frame body are fixedly mounted together through the frame body positioning groove and the frame body positioning block, the inner frame body is positioned on the inner side of the outer frame body, and door plate edge clamping grooves are respectively formed at the front ends and the rear ends of the inner frame body and the outer frame body; and the peripheral edges of the front door plate and the rear door plate are clamped in the door plate clamping grooves. The forming process of the anti-theft door is simplified, the time for forming and assembling the anti-theft door is short, the anti-theft door is well adapted to customization, and the final product quality is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-theft doors, and particularly relates to an anti-bulging door leaf structure. Background Art

[0002] As the first line of defense for homes and businesses, security doors require crucial material selection and processing technology. Solid doors are extruded from cold-rolled steel, with panels constructed entirely of steel. The thicknesses are typically 1.2 mm and 1.5 mm, providing strong impact resistance. The double-layered steel panels are filled with rock wool insulation and fireproofing, providing security, fire protection, thermal insulation, and sound insulation.

[0003] The forming process for a steel door leaf frame includes multiple steps, including design and measurement, material preparation, cutting and bending, welding and assembly, surface treatment, and installation and commissioning. Its components primarily consist of jambs, crossbeams, door sills, reinforcing ribs, connectors, and sealing strips. These steps and components together form the complete structural system of the steel door leaf frame, ensuring it can meet various needs and requirements during use. For example, CN104475505A discloses a bending forming method for a security door frame.

[0004] However, the following problems are prone to occur during the cutting, bending, welding, assembly, surface treatment, installation and commissioning of steel door leaf frames:

[0005] The steel door leaf frame is bent by a bending machine to form a rectangular door leaf frame, and then the front and rear door panels are assembled, and various fixings and connectors are connected for fixation. The bending time in the process of bending to form a rectangular door leaf frame is long, and the bending shape and angle have large errors. For example, if the bend is required to be 90°, the error can reach 90°±3°. These errors not only bring troubles to the subsequent welding assembly, installation and debugging, but also have a great impact on the quality of the entire product. The more inadequate thing is that, affected by the bending shape and angle accuracy, the entire process from steel plate to forming an anti-theft safety door takes 20 to 30 days, which is difficult to adapt to e-commerce customization. Utility Model Content

[0006] In response to the shortcomings of the prior art, the utility model provides, on the one hand, an anti-bulging door leaf structure, wherein the door leaf frame includes an inner frame and an outer frame made of aluminum profiles, and the inner frame and the outer frame are respectively provided with frame positioning grooves and frame positioning blocks along the length direction of the profiles, and the inner frame and the outer frame are fixed together by the frame positioning grooves and the frame positioning blocks, and the inner frame is located inside the outer frame, and the front and rear ends of the inner frame and the outer frame respectively form door panel edge grooves.

[0007] Preferably, the inner frame is composed of four inner frame aluminum profiles with the same cross-sectional shape, and the inner frame connecting end faces at both ends of each inner frame aluminum profile are 45°±1°, and the four inner frame aluminum profiles are connected in sequence through the inner frame connecting end faces to form a rectangle; the outer frame is composed of four aluminum profiles with the same cross-sectional shape, and the outer frame connecting end faces at both ends of each outer frame aluminum profile are 45°±1°, and the four outer frame aluminum profiles are connected in sequence through the outer frame connecting end faces to form a rectangle, and the outer frame is fixed to the outer periphery of the inner frame through the frame positioning groove and the frame positioning block.

[0008] Preferably, the inner side of the inner frame is further provided with corner code connecting grooves surrounding the rectangle at the front and rear ends respectively, the inner frame is provided with corner code connecting pieces at the corners of the rectangle, and the corner code connecting pieces are installed in the corner code connecting grooves, and the four inner frame aluminum profiles are fixed to each other by cooperating with the corner code connecting pieces and the corner code connecting grooves.

[0009] Preferably, the door panel edge grooves are used to clamp the front door panel and the rear door panel respectively, and the door panel edge grooves are formed by bending the front end portion and the rear end portion of the outer frame inwardly.

[0010] Preferably, the frame positioning block is integrally provided on the outer side surface of the inner frame, the frame positioning block extends outward, the frame positioning groove is provided on the inner side surface of the outer frame, and the frame positioning block is snapped into the frame positioning groove.

[0011] Preferably, inverted teeth are provided on the end surfaces of the frame positioning groove and the frame positioning block that cooperate with each other.

[0012] Preferably, the inner frame and the outer frame are further provided with mutually cooperating positioning grooves and positioning protrusions, respectively. The positioning grooves and positioning protrusions extend along the length direction of the profile, and the positioning grooves and the frame positioning blocks are respectively spaced apart at the front and rear sides.

[0013] Preferably, a frame reinforcement rib is connected to the outer side surface of the inner frame, and the other end of the reinforcement rib is connected to the outer end of the frame positioning block. The reinforcement rib is used to support the frame positioning block. The reinforcement rib is closer to the middle of the inner frame than the frame positioning block. The reinforcement rib, the frame positioning block and the interior of the inner frame form a hollow triangle.

[0014] Preferably, the outer side surface of the outer frame is further provided with a screw installation groove extending along the length direction of the profile, and the screw installation groove opens outward and is recessed inward along the outer side surface of the outer frame.

[0015] Preferably, the outer side of the screw installation slot of the outer frame is further covered with a decorative cover, and the decorative cover is detachably mounted on the outer frame through a cover buckle and an angle code connector.

[0016] On the other hand, an anti-bulging door leaf structure is provided, the anti-bulging door leaf structure includes a door leaf frame, a front door panel and a rear door panel, the front door panel and the rear door panel are spaced apart in the front and rear directions, the door leaf frame is sleeved on the outer periphery of the front door panel and the rear door panel, the door leaf frame includes an inner frame and an outer frame made of aluminum profiles, the inner frame and the outer frame are respectively provided with frame positioning grooves and frame positioning blocks along the length direction of the profile, the inner frame and the outer frame are fixed together by the frame positioning grooves and the frame positioning blocks, the inner frame is located inside the outer frame, the front and rear ends of the inner frame and the outer frame respectively form door panel edge grooves; the outer peripheral edges of the front door panel and the rear door panel are clamped in the door panel edge grooves.

[0017] Preferably, the outer peripheral edges of the front door panel and the rear door panel form a card edge portion, the card edge portion is concave inward compared to the middle plane of the door panel, the thickness of the card edge portion is smaller than the thickness of the middle of the door panel, and the thickness of the card edge portion is adapted to the card edge groove of the door panel.

[0018] Preferably, the cavity between the door leaf frame, the front door panel and the rear door panel forms a door core accommodating cavity, and the door core accommodating cavity is used to fill the door core.

[0019] Preferably, an anti-bulging support member is further provided between the front door panel and the rear door panel, the anti-bulging support member is located in the door core accommodating cavity, and the front side and rear side of the anti-bulging support member are fixedly connected to the front door panel and the rear door panel respectively.

[0020] Preferably, the anti-bulging support member is provided with outward-opening glue grooves on the front and rear sides respectively, and the glue grooves are used to accommodate glue, and the front door panel and the rear door panel are fixed to the anti-bulging support member respectively through the glue grooves and glue.

[0021] Preferably, an anti-bulging support is fixedly connected between the front door panel and the rear door panel. The anti-bulging support and the inner frame are aluminum profiles with the same cross-sectional shape. Both ends of the anti-bulging support are fixedly connected to the door leaf frame.

[0022] Preferably, the anti-bulging support and the inner frame are both provided with angle code connecting grooves and glue containing grooves, and the two ends of the anti-bulging support are respectively connected to the inner frame, so that the angle code connecting grooves of the anti-bulging support and the inner frame are connected, and the angle code connecting grooves of the two are located at the connection point with an angle code connector installed, and the two are fixedly connected to the angle code connecting grooves through the angle code connector.

[0023] Preferably, the front door panel is a steel plate or an aluminum plate, and the rear door panel is a steel plate, an aluminum plate or a wooden plate.

[0024] Preferably, hinge connection holes are provided at the upper end, middle part and lower end of the right side of the door leaf frame, the height of the door leaf is h, and the heights of the hinge connection holes at the three locations are 0.1h to 0.2h, 0.65h to 0.8h and 0.85h to 0.95h respectively.

[0025] Preferably, the inner frame is composed of four inner frame aluminum profiles with the same cross-sectional shape, and the inner frame connecting end faces at both ends of each inner frame aluminum profile are 45°±1°, and the four inner frame aluminum profiles are connected in sequence through the inner frame connecting end faces to form a rectangle; the outer frame is composed of four aluminum profiles with the same cross-sectional shape, and the outer frame connecting end faces at both ends of each outer frame aluminum profile are 45°±1°, and the four outer frame aluminum profiles are connected in sequence through the outer frame connecting end faces to form a rectangle, and the outer frame is fixed to the outer periphery of the inner frame through the frame positioning groove and the frame positioning block. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other purposes, features and advantages of the present invention will become more apparent through a more detailed description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the accompanying drawings, and the drawings are not intentionally scaled to actual size, but rather are intended to illustrate the subject matter of the present invention.

[0027] Figure 1 A schematic structural diagram of an anti-bulging door leaf structure provided in an embodiment;

[0028] Figure 2 for Figure 1 Structural diagram from another perspective;

[0029] Figure 3 for Figure 2 Middle AA section view;

[0030] Figure 4 for Figure 3 A schematic diagram of a partially enlarged structure at the top;

[0031] Figure 5 for Figure 3 A schematic diagram of a partially enlarged structure of the anti-bulging support member;

[0032] Figure 6 for Figure 3 The schematic diagram of the structure at the bottom;

[0033] Figure 7 for Figure 2 Middle BB cross-section;

[0034] Figure 8 for Figure 7 A schematic diagram of the partially enlarged structure at the middle right end;

[0035] Figure 9 for Figure 7 A schematic diagram of the partially enlarged structure at the middle left end;

[0036] Figure 10 It is a structural diagram of two adjacent sections of the inner frame body matched with the angle bracket connecting piece and the angle bracket connecting groove;

[0037] Figure 11 This is a structural diagram of the inner frame and the anti-bulging support member matching through the angle code connector and the angle code connecting groove.

[0038] Figure identification: door leaf frame 100, inner frame 101, outer frame 102, frame positioning groove 103, frame positioning block 104, inverted tooth 105, positioning groove 106, positioning protrusion 107, frame reinforcement rib 108, screw mounting groove 109, door panel edge groove 110, glue containing groove 111, door core containing cavity 112, decorative cover 113, cover body buckle 114, cover body slot 115, corner code connector 116, corner code connecting groove 117, card edge 118, hinge connecting hole 120, anti-bulging support 121, connecting groove wall 122, front door panel 123, rear door panel 124. DETAILED DESCRIPTION

[0039] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0040] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element. The terms "mounted", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0042] On the one hand, a door leaf frame 100 is provided, which includes an inner frame 101 and an outer frame 102 made of aluminum profiles. The inner frame 101 and the outer frame 102 are respectively provided with frame positioning grooves 103 and frame positioning blocks 104 along the length direction of the profile. The inner frame 101 and the outer frame 102 are fixed together by the frame positioning grooves 103 and the frame positioning blocks 104. The inner frame 101 is located on the inner side of the outer frame 102, and the front and rear ends of the inner frame 101 and the outer frame 102 respectively form door panel edge grooves 110.

[0043] In a preferred embodiment, the inner frame 101 is composed of four inner frame aluminum profiles with the same cross-sectional shape, and the inner frame connecting end faces at both ends of each inner frame aluminum profile are 45°±1°, and the four inner frame aluminum profiles are connected in sequence through the inner frame connecting end faces to form a rectangle; the outer frame 102 is composed of four aluminum profiles with the same cross-sectional shape, and the outer frame connecting end faces at both ends of each outer frame aluminum profile are 45°±1°, and the four outer frame aluminum profiles are connected in sequence through the outer frame connecting end faces to form a rectangle, and the outer frame 102 is fixed to the outer periphery of the inner frame 101 by a frame positioning groove 103 and a frame positioning block 104.

[0044] The inner frame 101 and the outer frame 102 and the inner frame connecting end face and the outer frame connecting end face are adapted to each other, and the inner frame 101 and the outer frame 102 can be cut by 45 degrees. Generally, the inner frame 101 and the outer frame 102 of the aluminum profile are cut by a cutting machine, and the size is very precise. The four aluminum profiles are sequentially built to form a rectangular door leaf frame 100 with a corner of 90 degrees. The inner frame aluminum profiles and the outer frame aluminum profiles are further fixed by fixing parts, so that the rectangular door leaf frame 100 can be used for a long time and still maintain 90 degrees. The fixing parts can be screws or the following angle code connectors 116. The above-mentioned setting avoids the steel plate material having high bending resistance in the steel door leaf frame bending process, and cannot install the expected rectangular door leaf frame 100 bent into a corner with 90 degrees. Generally, the door leaf frame 100 formed by bending steel plate material has an edge angle error of up to 90°±3°. The disadvantage of the terminal product is that the steel plate door leaf frame 100 will tilt to one side during long-term use, causing it to contact with the door frame, thereby affecting its use.

[0045] In a preferred embodiment, the inner side of the inner frame 101 is further provided with corner code connection grooves 117 surrounding the rectangle at the front and rear ends respectively. The inner frame 101 is provided with corner code connectors 116 at the corners of the rectangle, and the corner code connectors 116 are installed in the corner code connection grooves 117. The four inner frame aluminum profiles are fixed to each other through the cooperation of the corner code connectors 116 and the corner code connection grooves 117.

[0046] Fixation is achieved by cooperating the angle code connector 116 and the angle code connector groove 117, which facilitates installation and optimizes the process.

[0047] In a preferred embodiment, the door panel edge grooves 110 are used to respectively clamp the front door panel 123 and the rear door panel 124 . The door panel edge grooves 110 are formed by bending the front end and the rear end of the outer frame 102 inward.

[0048] The inward bend refers to the bend toward the inside of the door leaf. The front and rear ends of the outer frame 102 are bent inward to form two door panel edge grooves 110 at the front and rear ends. The edge grooves are connected to the front door panel 123 and the rear door panel 124, which facilitates installation and improves installation efficiency. Secondly, the edge grooves are formed by the inward bending of the front and rear ends of the outer frame 102, which facilitates the integral molding of the outer frame 102.

[0049] In a preferred embodiment, the frame positioning block 104 is integrally provided on the outer surface of the inner frame 101 , the frame positioning block 104 extends outward, the frame positioning groove 103 is provided on the inner side surface of the outer frame 102 , and the frame positioning block 104 is snapped into the frame positioning groove 103 .

[0050] The positioning block is located on the outer side of the inner frame 101 and is integrally formed therewith, and the frame positioning groove 103 is located on the inner side of the outer frame 102 and is integrally formed therewith. When the outer frame 102 and the outer frame 102 are fixed and positioned with each other, the outer frame 102 and the outer frame 102 made of aluminum profiles are easier to form. On the other hand, the above arrangement makes it convenient to combine and install the outer frame 102 with the inner frame 101.

[0051] In a preferred embodiment, inverted teeth 105 are provided on the end surfaces where the frame positioning groove 103 and the frame positioning block 104 cooperate.

[0052] Generally, the positioning block is provided with an inverted tooth 105 on the side close to the frame positioning groove 103. The inverted tooth 105 structure has an anti-retraction function, making the connection between the two more stable. Combined with the aluminum profile having a certain elasticity, the connection stability performance is stronger.

[0053] In a preferred embodiment, the inner frame 101 and the outer frame 102 are also respectively provided with mutually cooperating positioning grooves 106 and positioning protrusions 107, the positioning grooves 106 and positioning protrusions 107 extend along the length direction of the profile, and the positioning grooves 106 and the frame positioning blocks 104 are respectively spaced apart and arranged on the front and rear sides.

[0054] The positioning groove 106 is formed by being concave inward on the outer surface of the inner frame 101, and the positioning protrusion 107 is formed by being protruded inward on the inner side surface of the outer frame 102. The positioning groove 106 and the positioning protrusion 107 are located on the same side of the inner frame 101 and the outer frame 102, and the frame positioning block 104 and the frame positioning groove 103 are located on the same side of the inner frame 101 and the outer frame 102, further fixing and positioning the rear ends of the inner frame 101 and the outer frame 102, thereby improving the accuracy of installation.

[0055] In a preferred embodiment, a frame reinforcement rib 108 is also connected to the outer surface of the inner frame 101, and the other end of the reinforcement rib is connected to the outer end of the frame positioning block 104. The reinforcement rib is used to support the frame positioning block 104. The reinforcement rib is closer to the middle of the inner frame 101 than the frame positioning block 104. The reinforcement rib, the frame positioning block 104 and the interior of the inner frame 101 form a hollow triangle.

[0056] The hollow triangle can save materials, and the reinforcing ribs can strengthen the structure of the frame positioning block 104 , thereby strengthening the installation connection structure strength between the outer frame 102 and the outer frame 102 .

[0057] In a preferred embodiment, the outer side surface of the outer frame 102 is further provided with a screw installation groove 109 extending along the length direction of the profile. The screw installation groove 109 opens outward and is recessed inward along the outer side surface of the outer frame 102 .

[0058] The screw installation slot 109 is used to prevent the drill bit or screw from sliding around when drilling and installing the screw. The screw can pass through the outer frame 102 and the inner frame 101 along the screw installation slot 109 and further fix the two.

[0059] In a preferred embodiment, the outer frame 102 is further covered with a decorative cover 113 on the outside of the screw installation slot 109 . The decorative cover 113 is detachably mounted on the outer frame 102 via a cover buckle 114 and an angle bracket connector 116 .

[0060] The decorative cover 113 is generally U-shaped, with cover buckles 114 provided on both sides thereof. Corresponding cover slots 115 are provided on the outer frame 102. When the decorative cover 113 is to be mounted on the outer frame 102, the cover buckles 114 snap into the cover slots 115. The decorative cover 113 prevents the screws located in the screw mounting slots 109 from being exposed, thus maintaining the aesthetics of the door frame 100 and the door structure.

[0061] On the other hand, an anti-bulging door leaf structure is provided, which includes a door leaf frame 100, a front door panel 123 and a rear door panel 124. The front door panel 123 and the rear door panel 124 are spaced apart from each other. The door leaf frame 100 is sleeved on the outer periphery of the front door panel 123 and the rear door panel 124. The door leaf frame 100 includes an inner frame 101 and an outer frame 102 made of aluminum profiles. The inner frame 101 and the outer frame 102 are spaced apart along the length direction of the profile. There are frame positioning grooves 103 and frame positioning blocks 104 respectively. The inner frame 101 and the outer frame 102 are fixed together through the frame positioning grooves 103 and the frame positioning blocks 104. The inner frame 101 is located on the inner side of the outer frame 102. The front and rear ends of the inner frame 101 and the outer frame 102 respectively form door panel edge grooves 110; the outer peripheral edges of the front door panel 123 and the rear door panel 124 are clamped in the door panel edge grooves 110.

[0062] In a preferred embodiment, the outer peripheral edges of the front door panel 123 and the rear door panel 124 form a card edge portion 118, which is concave inward compared to the middle plane of the door panel. The thickness of the card edge portion 118 is less than the thickness of the middle of the door panel, and the thickness of the card edge portion 118 is adapted to the card edge groove 110 of the door panel.

[0063] The thickness of the edge portion 118 is fixed and fits snugly into the door panel edge groove 110. This allows for customizing front and rear door panels 123 and 124 with varying thicknesses. For example, if the door panel edge groove 110 is 0.8 mm and the required thickness of the front door panel 123 is 1.0 mm, the edge of the front door panel 123 is milled off by 0.2 mm to create a 0.8 mm edge portion 118. If the required thickness of the front door panel 123 is 1.2 mm, the edge of the front door panel 123 is milled off by 0.4 mm to create a 0.8 mm edge portion 118.

[0064] In a preferred embodiment, the cavity between the door leaf frame 100, the front door panel 123 and the rear door panel 124 forms a door core accommodating cavity 112, and the door core accommodating cavity 112 is used to fill the door core.

[0065] The door core is made of one or any combination of mineral wool, polyurethane foam material, steel mesh, polystyrene foam board, fireproof board, honeycomb cardboard, and the door core can be filled in the door core accommodating cavity 112 to reduce the use of aluminum profiles while enriching the functions of the anti-bulging door leaf structure, such as square box function or sound absorption effect.

[0066] In a preferred embodiment, an anti-expansion support member 121 is also provided between the front door panel 123 and the rear door panel 124. The anti-expansion support member 121 is located in the door core accommodating cavity 112. The front side and rear side of the anti-expansion support member 121 are fixedly connected to the front door panel 123 and the rear door panel 124 respectively.

[0067] The anti-bulging support member 121 is provided to prevent the front door panel 123 and the rear door panel 124 from bulging forward and backward respectively, which would affect the use and appearance of the door leaf.

[0068] In a preferred embodiment, the anti-bulging support member 121 is provided with outward-opening glue grooves 111 on the front and rear sides, respectively. The glue grooves 111 are used to accommodate glue, and the front door panel 123 and the rear door panel 124 are fixed to the anti-bulging support member 121 respectively through the glue grooves 111 and the glue.

[0069] When fixing the front door panel 123 and the rear door panel 124 to the anti-expansion support 121, first apply the glue and fill the glue groove 111, and then press the front door panel 123 and the rear door panel 124 onto the front and rear sides of the anti-expansion support 121 respectively to ensure that the front door panel 123 and the rear door panel 124 are fixed flatly on the front and rear surfaces of the anti-expansion support 121, and ensure that the spacing distance between the front door panel 123 and the rear door panel 124 is accurate and of the required size. The setting of the glue groove 111 can avoid that when the glue is completely applied to the front and rear surfaces of the anti-expansion support 121 during fixation, the front door panel 123 and the rear door panel 124 are unevenly adhered to the anti-expansion support 121 due to the characteristics of the glue, and the front door panel 123 and the rear door panel 124 are difficult to be fixed according to the expected spacing distance.

[0070] In a preferred embodiment, an anti-bulging support 121 is fixedly connected between the front door panel 123 and the rear door panel 124. The anti-bulging support 121 and the inner frame 101 are aluminum profiles with the same cross-sectional shape, and both ends of the anti-bulging support 121 are fixedly connected to the door frame 100.

[0071] The anti-bulging support 121 and the inner frame 101 are aluminum profiles with the same cross-sectional shape, that is, the same profile can be used for both, reducing the investment in molding equipment and reducing the manufacturer's material storage. At the same time, because the two can be cut from the same profile, it is convenient to concentrate the production line and reduce the time of the molding process and the product assembly process.

[0072] In a preferred embodiment, the anti-bulging support member 121 and the inner frame 101 are both provided with an angle code connecting groove 117 and a glue containing groove 111, and the two ends of the anti-bulging support member 121 are respectively connected to the inner frame 101, so that the angle code connecting grooves 117 of the anti-bulging support member 121 and the inner frame 101 are connected, and the angle code connecting grooves 117 of the two are located at the connection point with an angle code connector 116 installed, and the two are fixedly connected through the angle code connector 116 and the angle code connecting groove 117.

[0073] The structural strength between the anti-bulging support 121 and the inner frame 101 is ensured, and installation and positioning are relatively convenient. The corner code connector 116 is a 90° L-shaped component. The anti-bulging support 121 and the inner frame 101 are both provided with a glue groove 111. The anti-bulging support 121 and the inner frame 101 are cut from the same aluminum profile to ensure that the front door panel 123 and the rear door panel 124 are fixed flatly and accurately as required. Generally, after fixing, the distance between the front door panel 123 and the rear door panel 124 is generally adapted to the distance between the door panel edge grooves 110 at the front and rear ends of the outer frame 102.

[0074] In a preferred embodiment, the front door panel 123 is a steel plate or an aluminum plate, and the rear door panel 124 is a steel plate, an aluminum plate or a wooden plate.

[0075] Through the above settings, customers can flexibly replace door panels with different material combinations according to their needs.

[0076] In a preferred embodiment, hinge connection holes 120 are provided at the upper, middle and lower ends of the right side of the door frame 100. The height of the door is h, and the heights of the hinge connection holes 120 at the three locations are 0.1h to 0.2h, 0.65h to 0.8h and 0.85h to 0.95h respectively.

[0077] The door leaf is fixed to the door frame via hinge connection holes 120. The height of the door leaf is the same as the height of the door leaf frame 100. The lower hinge connection hole 120 is set at a height of 0.1h to 0.2h of the door leaf height, the middle hinge connection hole 120 is set at a height of 0.65h to 0.8h of the door leaf height, and the upper hinge connection hole 120 is set at a height of 0.85h to 0.95h of the door leaf height. This arrangement allows the door leaf to be fixed to the door frame and is more consistent with the mechanical structure.

[0078] The inner frame 101, outer frame 102 and anti-bulging support 121 required for the present invention are aluminum profiles made of extrusion molding or casting molding; the inventory mainly stores inner frame aluminum profiles used to assemble to form the inner frame 101 and outer frame aluminum profiles used to assemble to form the outer frame, as well as a small amount of accessories for fixed connection; after the customer places an order, the inner frame aluminum profile and the outer frame aluminum profile are cut to the corresponding length according to the door leaf width and height required by the customer. For example, if the width and height are 900mm and 2000mm respectively, two 900mm long inner frame aluminum profiles and two 2000mm inner frame aluminum profiles are cut, and two 900mm long outer frame aluminum profiles and two 2000mm outer frame aluminum profiles are cut; if anti-bulging support 121 is required, the required number of inner frame aluminum profiles are cut as anti-bulging supports. During assembly, the four inner frame aluminum profiles are first assembled to form the inner frame 101, which is further fixed by the angle code connectors 116 and welding. Then, the anti-bulging support is spaced apart in the rectangular inner frame 101, and the anti-bulging support 121 is fixed and positioned by the angle code connectors 116. The anti-bulging support 121 and the inner frame 101 can also be fixed by welding to strengthen the overall structural strength. At this time, the glue grooves 111 on the front side of the anti-bulging support 121 and the front side of the inner frame 101 are filled with glue and covered with the front door panel 123. After the front door panel 123 is pressed and fixed, the inner frame 101 is flipped so that the rear side of the inner frame 101 faces upward and the front door panel 123 faces downward. At this time, the door core accommodating cavity 119112 can be filled with the door core. Then, the glue grooves 111 on the rear side of the anti-bulging support 121 and the rear side of the inner frame 101 are filled with glue and covered with the rear door panel 124. The rear door panel 124 is pressed and fixed. Of course, in some embodiments, if the door core is made of some foaming material, the front door panel 123 and the rear door panel 124 can be completely fixed on the inner frame 101 first, and then transported to the door core accommodating cavity 119112 through the through-holes on the inner frame 101 to complete the filling of the door core. After the rear door panel 124 is pressed and fixed, the four outer frame aluminum profiles are sequentially arranged along the length direction of the profile in accordance with the outer periphery of the four inner frame aluminum profiles. The four outer frame aluminum profiles form the outer frame 102. At this time, the frame positioning block 104 is clamped to the frame positioning groove 103, and the door panel edge grooves 110 at the front and rear ends of the outer frame 102 are respectively clamped to the edges of the front door panel 123 and the rear door panel 124, that is, clamped to the edge portions 118 of the front door panel 123 and the rear door panel 124. After the door panels are secured and the inner frame 101 and the frame positioning slots 103 are fixed and positioned, the inner frame 101 and the frame are fixed with screws at the screw mounting slots 109 to enhance the structural strength of both. A decorative cover 113 is installed outside the screw locations to complete the assembly of the entire door leaf.

[0079] Compared with door panels formed by bending steel sheet metal, this utility model has the following advantages:

[0080] (1) The inner and outer frames are made of aluminum profiles, which are convenient for extrusion or casting, and avoid the inconvenience of bending steel door leaf frames, which takes a long time to bend and has large errors in the shape and angle of the bend. The door leaf frame is divided into an inner frame and an outer frame, which facilitates molding and improves the efficiency and flexibility of door panel installation.

[0081] (2) The inner frame and the outer frame are fixed together through the frame positioning groove and the frame positioning block, thereby improving the assembly efficiency. The frame positioning groove and the frame positioning block cooperate to make the inner frame and the outer frame assembled with high accuracy.

[0082] (3) Through the precise cutting and assembly of aluminum profiles, the cutting shape and angle have higher accuracy, and the error controllability is very high, which avoids the large bending error of the steel door leaf frame, which will cause troubles for subsequent welding assembly, installation and debugging, and also have a greater impact on the quality of the entire product; the door leaf frame and the final molded product of the utility model are of high quality and can still maintain a 90° rectangle during long-term use.

[0083] (4) The bending process of steel door leaf frames requires at least a shearing machine, a laser cutting machine (or a plasma cutting machine), a punching machine (or a press), a roll forming machine, a bending machine, a welding machine, an assembly fixture, and a lifting device (for moving heavy steel parts). The present invention eliminates or greatly reduces the use of a punching machine (or a press), a roll forming machine, a bending machine, an assembly fixture, and a lifting device (for moving heavy steel parts).

[0084] (5) The entire process from aluminum profiles to anti-theft security doors takes only 8 to 12 days, which is more in line with e-commerce customization.

[0085] (6) High plasticity and processing flexibility. Aluminum profiles have good plasticity and ductility, and can be processed into various complex and precise cross-sectional shapes through extrusion, stretching, and other methods to meet the designer's various requirements for the appearance and performance of door panels. In addition, the processing of aluminum profiles is relatively simple and the cost is low. Although steel sheet metal bending can also produce shells of various shapes, it may require more processes and higher technical requirements when processing complex shapes, and the cost is relatively high.

[0086] (7) Since the processing of aluminum profiles is relatively simple and easy to control, the processing accuracy is high and the surface quality is also good. In addition, the surface of aluminum profiles can be treated in a variety of ways (such as powder coating, anodizing, etc.) to meet different decorative and performance requirements. During the bending process of steel sheet metal, defects such as bending cracks, rebound, and indentation may occur, affecting the processing accuracy and surface quality. Although these defects can be reduced by adjusting process parameters and mold design, the processing difficulty and cost may be higher than that of aluminum profiles.

[0087] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An anti-bulging door leaf structure, characterized in that: The anti-bulging door leaf structure includes a door leaf frame, a front door panel and a rear door panel, the front door panel and the rear door panel are arranged at intervals in front and back, the door leaf frame is sleeved on the outer periphery of the front door panel and the rear door panel, the door leaf frame includes an inner frame and an outer frame made of aluminum profile, the inner frame and the outer frame are respectively provided with frame positioning grooves and frame positioning blocks along the length direction of the profile, the inner frame and the outer frame are fixed together by the frame positioning grooves and the frame positioning blocks, the inner frame is located inside the outer frame, and the front and rear ends of the inner frame and the outer frame respectively form door panel clamping grooves; the peripheral edges of the front door panel and the rear door panel are clamped in the door panel clamping grooves; An anti-bulging support member is further provided between the front door panel and the rear door panel. The anti-bulging support member is located in the door core accommodating cavity. The front side surface and the rear side surface of the anti-bulging support member are fixedly connected to the front door panel and the rear door panel respectively.

2. The anti-bulging door leaf structure according to claim 1, characterized in that: The outer peripheral edges of the front door panel and the rear door panel form a card edge portion, which is concave inward compared to the middle plane of the door panel. The thickness of the card edge portion is smaller than the thickness of the middle of the door panel, and the thickness of the card edge portion is adapted to the card edge groove of the door panel.

3. The anti-bulging door leaf structure according to claim 1, characterized in that: The cavity between the door leaf frame, the front door panel and the rear door panel forms a door core accommodating cavity, and the door core accommodating cavity is used to fill the door core.

4. The anti-bulging door leaf structure according to claim 1, characterized in that: The anti-bulging support member is provided with outward-opening glue grooves on the front and rear sides, respectively, and the glue grooves are used to accommodate glue. The front door panel and the rear door panel are fixed to the anti-bulging support member respectively through the glue grooves and the glue.

5. The anti-bulging door leaf structure according to claim 1, characterized in that: An anti-bulging support is fixedly connected between the front door panel and the rear door panel. The anti-bulging support and the inner frame are aluminum profiles with the same cross-sectional shape. Both ends of the anti-bulging support are fixedly connected to the door leaf frame.

6. The anti-bulging door leaf structure according to claim 5, characterized in that: The anti-bulging support and the inner frame are both provided with angle code connecting grooves and glue containing grooves. The two ends of the anti-bulging support are respectively connected to the inner frame, so that the angle code connecting grooves of the anti-bulging support and the inner frame are connected. The angle code connecting grooves of the two are located at the connection point and an angle code connector is installed, and the two are fixedly connected to the angle code connecting grooves through the angle code connector.

7. The anti-bulging door leaf structure according to claim 1, characterized in that: The front door panel is a steel plate or an aluminum plate, and the rear door panel is a steel plate, an aluminum plate or a wooden plate.

8. The anti-bulging door leaf structure according to claim 1, characterized in that: Hinge connection holes are provided at the upper end, middle part and lower end of the right side of the door leaf frame. The height of the door leaf is h, and the heights of the hinge connection holes at the three locations are 0.1h to 0.2h, 0.65h to 0.8h and 0.85h to 0.95h respectively.

9. The anti-bulging door leaf structure according to claim 1, characterized in that: The inner frame is composed of four inner frame aluminum profiles with the same cross-sectional shape, and the inner frame connecting end faces at both ends of each inner frame aluminum profile are 45°±1°, and the four inner frame aluminum profiles are connected in sequence through the inner frame connecting end faces to form a rectangle; the outer frame is composed of four aluminum profiles with the same cross-sectional shape, and the outer frame connecting end faces at both ends of each outer frame aluminum profile are 45°±1°, and the four outer frame aluminum profiles are connected in sequence through the outer frame connecting end faces to form a rectangle, and the outer frame is fixed to the outer periphery of the inner frame through the frame positioning groove and the frame positioning block.

10. The anti-bulging door leaf structure according to claim 1, characterized in that: The outer side surface of the outer frame is further provided with a screw installation groove extending along the length direction of the profile, the screw installation groove opening is outward and is recessed inward along the outer side surface of the outer frame; The outer side of the outer frame body is further covered with a decorative cover located on the screw installation groove. The decorative cover is detachably mounted on the outer frame body through a cover body buckle and an angle code connector.

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