Door lock mounting device and door lock

Abstract

The invention discloses a door lock mounting device and a door lock. The door lock mounting device comprises an indoor lock cover plate, a main stud, a main nut and an outdoor lock stud. A through hole matched with the main nut is formed in the indoor lock cover plate; a first threaded hole matched with the main stud is formed in the outdoor lock stud, and the first threaded hole is used for being pre-fixed with the first end of the main stud before the door lock is installed; a second threaded hole matched with the main stud is formed in the main nut, and the second threaded hole is used for being in threaded connection with the second end of the main stud when the door lock is installed; the thread turning direction of the second end, matched with the main nut, of the main stud is the same as the thread turning direction of the first end, matched with the outdoor lock screw stud, of the main stud. The pre-fixing structure is arranged by screwing the main stud and the outdoor lock stud in advance, and the screwing directions of the threads at the two ends of the main stud are consistent, so that the same-direction double-screwing-direction thread design is realized, and the mounting convenience, the structural reliability and the standard compatibility are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of smart door lock technology, specifically to a door lock installation device and a door lock. Background Technology

[0002] With the rapid development of the smart lock market, users have placed higher demands on the compatibility and ease of installation of locks. US-standard smart locks must be certified by the BHMA (Builders Hardware Manufacturers Association), with grades 1, 2, and 3, representing decreasing strength performance. Traditional lock installation methods, while meeting the strength requirements of different BHMA grades, often neglect user experience and compatibility during installation. Currently, common smart lock installation methods on the market mainly include ring mounting and internal stud mounting.

[0003] Specifically, traditional lock ring installation requires high positioning accuracy during installation, and the non-standard size of the door panel lock hole often leads to installation difficulties and low efficiency. Meanwhile, the internal stud installation method (suitable for Grade 3) is limited by the stud mounting hole diameter on the lock, and the internal stud wall thickness is relatively thin, failing to meet the strength requirements of higher BHMA grades.

[0004] Therefore, traditional smart door lock installation solutions lack broad compatibility with different door thicknesses and door panel lock hole diameters, making it difficult to meet diverse market demands. Summary of the Invention

[0005] This application provides a door lock installation device and a door lock, which can improve installation convenience, structural reliability and standard compatibility.

[0006] On one hand, embodiments of this application provide a door lock installation device, including an indoor lock cover plate, a main stud, a main nut, and an outdoor lock screw stud; The indoor lock cover plate has a through hole that matches the main nut; The outdoor lock screw post is provided with a first threaded hole that matches the main stud. The first threaded hole is used to pre-fix the first end of the main stud before the door lock is installed. The main nut has a second threaded hole that matches the main stud. The second threaded hole is used to connect with the second end of the main stud during door lock installation. The thread direction of the second end of the main stud that mates with the main nut is the same as the thread direction of the first end of the main stud that mates with the outdoor locking screw.

[0007] On the other hand, embodiments of this application provide a door lock, the door lock including the door lock mounting device as described in any of the preceding aspects.

[0008] The door lock installation device provided in this application includes an indoor lock cover plate, a main stud, a main nut, and an outdoor lock screw stud. The indoor lock cover plate has a through hole that matches the main nut. The outdoor lock screw stud has a first threaded hole that matches the main stud, which is used to pre-fix the first end of the main stud before the door lock is installed. The main nut has a second threaded hole that matches the main stud, which is used to thread the second end of the main stud during the door lock installation. The thread direction of the second end of the main stud that mates with the main nut is the same as the thread direction of the first end of the main stud that mates with the outdoor lock screw stud. The door lock installation device provided in this application embodiment uses a pre-fixed structure by pre-engaging the main stud with the outdoor lock screw stud, and a unidirectional double-thread design with the threads at both ends of the main stud having the same direction of rotation. This achieves precise positioning and bidirectional fastening of the main stud during installation, avoiding the risk of parts falling off due to external impact in traditional installation methods. Furthermore, the adjustable length of the main stud adapts to door bodies of different thicknesses. At the same time, this structure can meet the strength requirements of different safety levels in the door lock performance grading standard, significantly improving installation convenience, structural reliability, and standard compatibility. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the door lock mounting device provided in an embodiment of this application.

[0011] Figure 2 This is a schematic diagram of the main nut provided in an embodiment of this application.

[0012] Figure 3 This is a schematic diagram of the main stud provided in an embodiment of this application. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0015] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0016] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0017] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0018] The following sections provide detailed descriptions of each example. It should be noted that the order in which the embodiments are described is not intended to limit the priority of the embodiments.

[0019] For details, please refer to Figures 1 to 3 This application provides a door lock installation device. The door lock installation device 10 includes an indoor lock cover plate 1, a main stud 2, a main nut 3, and an outdoor lock screw stud 4.

[0020] The indoor lock cover plate 1 has a through hole 11 that matches the main nut 3; the outdoor lock screw post 4 has a first threaded hole 41 that matches the main stud 2, which is used to pre-fix the first end of the main stud 2 before the door lock 100 is installed; the main nut 3 has a second threaded hole 31 that matches the main stud 2, which is used to thread the second end of the main stud 2 when the door lock 100 is installed; the thread direction of the second end of the main stud 2 that matches the main nut 3 is the same as the thread direction of the first end of the main stud 2 that matches the outdoor lock screw post 4.

[0021] The indoor lock cover plate 1 is made of metal (such as stainless steel or aluminum alloy) and has a through hole 11 that matches the main nut 3. The diameter of the through hole is slightly larger than the diameter of the main stud 2 so that the main stud 2 can pass through during installation.

[0022] The outdoor lock screw post 4 is a structural component on the body of the outdoor lock 20. It can be made of metal and has a first threaded hole 41 that matches the main stud 2. The thread specification of the first threaded hole 41 is adapted to the thread on the first end of the main stud 2, and is used for pre-fixing with the first end of the main stud 2 before the door lock 100 is installed. For example, the first threaded hole 41 can be a fully threaded hole structure. In another embodiment, the first threaded hole 41 can be a structure with a threaded front section and a smooth rear section, that is, the rear section near the bottom of the first threaded hole 41 is a smooth section, and the front section away from the bottom of the first threaded hole 41 is a threaded section.

[0023] The main nut 3 has a second threaded hole 31 that matches the main stud 2. The thread specification of the second threaded hole 31 is adapted to the thread on the second end of the main stud 2, and is used for threaded connection with the second end of the main stud 2 when the door lock 100 is installed. For example, the second threaded hole 31 can be a fully threaded hole structure. In another embodiment, the second threaded hole 31 can be a structure with a threaded front section and a smooth rear section, that is, the rear section near the bottom of the second threaded hole 31 is a smooth section, and the front section away from the bottom of the second threaded hole 31 is a threaded section.

[0024] The thread direction at the second end of the main stud 2 that mates with the main nut 3 is the same as the thread direction at the first end of the main stud 2 that mates with the outdoor locking screw post 4. Both are either right-hand threads or both are left-hand threads, determined according to the actual design, to ensure that it will not unscrew in the opposite direction during final tightening. The thread direction at both ends of the main stud 2 is set to be the same. This design ensures that the torque applied to the main stud 2 when finally tightening the main nut 3 will not cause it to loosen from the outdoor locking screw post 4, but rather forms a stable tension force, thus achieving reliable fastening.

[0025] In some embodiments, the depth of the second threaded hole 31 on the main nut 3 is shallower than the depth of the first threaded hole 41 on the outdoor locking screw post 4.

[0026] The second threaded hole 31 of the main nut 3 is designed to be shallower, for example, 3-10mm deep, accommodating only about 5-7 threads. In contrast, the first threaded hole 41 of the outdoor locking screw post 4 has a deeper hole, typically not less than 15mm. This difference in depth is a design feature. Because the hole depth on the main nut 3 is shallower than that on the outdoor locking screw post 4, during tightening, the main nut 3 can first be tightened and fixed to the second end of the main screw post 2, forming a single unit. At this point, the main nut 3 and the main screw post 2 have achieved sufficient fixing strength, but the main nut 3 has not yet been screwed to the surface of the indoor lock cover plate 1. The outdoor locking screw post 4, with its larger hole depth, provides sufficient travel space for the subsequent deeper movement of the main screw post 2. Subsequently, continuing to screw the main nut 3 in can push the first end of the main screw post 2 deeper into the outdoor locking screw post 4 until the main nut 3 reaches the surface of the indoor lock cover plate 1 and is fixed.

[0027] In some embodiments, the depth of the first threaded hole 41 meets a preset depth range so that the adjustable stroke of the main stud 2 in the outdoor locking screw stud 4 can adapt to different door thicknesses.

[0028] The depth of the first threaded hole 41 is sufficient to allow the adjustable stroke of the main stud 2 in the outdoor locking screw post 4 to accommodate different door thicknesses. The thread length of the first threaded hole 41 is sufficient to meet the fixing strength requirements. Different depths of the first threaded hole 41 result in different lengths of the main stud 2, and thus different door thicknesses can be matched. That is, the greater the depth of the first threaded hole 41 and the longer the main stud 2, the wider the range of door thicknesses it can accommodate.

[0029] For example, the depth of the first threaded hole 41 on the outdoor locking screw post 4 is not less than 15mm, and the length of the main stud 2 and its adjustable stroke in the outdoor locking screw post 4 are configured to adapt to door thicknesses ranging from 35mm to 55mm.

[0030] For example, to accommodate door thicknesses ranging from 35mm to 55mm, the depth of the first threaded hole 41 of the outdoor locking screw post 4 is designed to meet a preset depth range, such as a minimum of 15mm. The total length of the main stud 2 is calculated based on the maximum door thickness and the pre-fixed depth, for example, designed to be 50mm, 55mm, or 60mm. In this way, the adjustable stroke of the main stud 2 within the outdoor locking screw post 4 is sufficient to cover a 20mm difference in door thickness, achieving stepless adjustment.

[0031] In some embodiments, before the door lock 100 is installed, the first end of the main stud 2 is screwed into the first threaded hole 41 and pre-fixed with the outdoor lock screw post 4; when the door lock 100 is installed, the outdoor lock 20 with the pre-fixed main stud 2 is placed on the outside of the door so that the main stud 2 passes through the lock tip 210 and lock tip screw hole 211 on the door 200; the main stud 2 is pre-assembled by passing through the through hole 11 on the indoor lock cover plate 1, and the main nut 3 is inserted into the through hole 11 to cooperate with the main stud 2 and tightened to fix it.

[0032] For example, before the door lock 100 is manufactured and shipped, the first end of the main stud 2 is screwed into the first threaded hole 41 of the outdoor lock screw post 4 to a depth of about 5mm to achieve pre-fixation. This assembly is referred to as the outdoor lock 20. During user installation, the outdoor lock 20 is placed on the outside of the door 200, so that the main stud 2 passes through the locking bolt 210 and locking bolt screw hole 211 on the door 200 to reach the other side of the door. Then, the through hole 11 on the indoor lock cover plate 1 is aligned with the main stud 2 for pre-assembly, and the main nut 3 is inserted into the through hole 11 so that its second threaded hole 31 mates with the main stud 2. Finally, a tool (such as a screwdriver) is used to tighten and fix it.

[0033] In some embodiments, during the tightening of the main nut 3, the main nut 3 and the main stud 2 are tightened and fixed as a whole; as the main nut 3 continues to be screwed in, the main nut 3 pushes the main stud 2 into the outdoor locking screw stud 4 until the main nut 3 reaches the surface of the indoor locking cover plate 1 and is fixed.

[0034] For example, during the tightening of the main nut 3, the main nut 3 and the main stud 2 are first tightened and fixed as a whole through the second threaded hole 31 and the thread at the second end of the main stud 2. At this time, the main nut 3 and the main stud 2 have achieved sufficient fixing strength, but the main nut 3 is not yet completely screwed to the surface of the interior lock cover plate 1. Subsequently, the main nut 3 is continued to be screwed in using a tool, and the main nut 3 will push the main stud 2 deeper into the first threaded hole 41 of the exterior lock screw stud 4. As the main stud 2 goes deeper, the main nut 3 also gradually approaches the surface of the interior lock cover plate 1 until the main nut 3 reaches the surface of the interior lock cover plate 1 and is completely fixed.

[0035] In some embodiments, the interior lock cover 1 is a metal part, and when the main nut 3 is tightened to the final position, the interior lock cover 1 undergoes elastic deformation.

[0036] This elastic deformation can provide preload to the main nut 3.

[0037] For example, the interior lock cover plate 1 is made of a metal material with a certain degree of elasticity, such as high-quality steel or aluminum alloy, with a thickness of approximately 1.5-2.0 mm. When the main nut 3 is tightened to its final position, its bottom will press against the surface of the interior lock cover plate 1. Due to the pressure applied by the main nut 3 to the interior lock cover plate 1, the interior lock cover plate 1 will undergo slight elastic deformation. This elastic deformation will provide a preload force to the main nut 3 in the opposite direction, thereby preventing the threads from loosening and improving the stability and reliability of the door lock installation.

[0038] In some embodiments, the main stud 2 is pre-screwed into the outdoor locking screw stud 4 to a depth of not less than 3 mm.

[0039] For example, a depth of not less than 3mm is to ensure the reliability of pre-fixation and prevent loosening during transportation.

[0040] For example, in the factory-pre-fixed state, the main stud 2 is screwed into the outdoor locking screw 4 to a depth of 3mm to 10mm, preferably about 5mm. The preferred depth of 5mm ensures reliability while providing sufficient exposed length for the main stud 2 to pass through the locking screw 210 during installation, facilitating operation.

[0041] In some embodiments, the diameter of the main stud 2 is configured to adapt to different security levels specified in the door lock performance grading standard.

[0042] For example, the diameter of the main stud 2 is designed to be adapted to the different security levels specified in door lock performance grading standards (such as BHMA grades) to ensure compatibility with the fixing and installation strength requirements of all BHMA grades of door locks. For instance, for Grade 1 door locks, an M6 bolt with a diameter of 6mm is typically used as the main stud 2; for Grade 2 door locks, an M5 bolt with a diameter of 5mm is used; and for Grade 3 door locks, an M4 bolt with a diameter of 4mm is used. This design ensures that the door lock mounting device can meet the requirements of different security levels, improving the overall performance of the door lock.

[0043] In some embodiments, the diameter of the through hole 11 on the interior lock cover 1 is larger than the diameter of the main stud 2, so that the interior lock cover 1 can float within a certain range before final fixing to accommodate the size deviation of the door panel lock hole 220.

[0044] For example, the diameter of the through hole 11 on the interior lock cover plate 1 is designed to be slightly larger than the diameter of the main stud 2. For instance, if the diameter of the main stud 2 is 6mm, the diameter of the through hole 11 is designed to be 6.5mm or 7mm. This design allows the interior lock cover plate 1 to float within a certain range before final fixing, thus accommodating potential dimensional deviations in the door panel lock hole 220. During installation, even if the diameter of the door panel lock hole 220 differs from the theoretical value, the interior lock cover plate 1 can adjust its position by floating, ensuring that the main stud 2 can smoothly pass through the through hole 11 and be fixed in place with the main nut 3.

[0045] In some embodiments, the top of the main nut 3 is provided with an operating structure 321 for easy tool turning, and the operating structure 321 is an internal hexagon, a cross-shaped groove, or an external hexagon head.

[0046] For example, such as Figure 2 As shown, the top 32 of the main nut 3 is provided with an operating structure 321 for easy tool tightening. Depending on the actual design and usage requirements, the operating structure 321 can be in the form of an internal hex head, a Phillips head, or an external hex head. For example, when the operating structure 321 is an internal hex head, the user can use an internal hex wrench to tighten it; when the operating structure 321 is a Phillips head, a regular Phillips screwdriver can be used; and when the operating structure 321 is an external hex head, an adjustable wrench or a socket wrench can be used. This design improves the convenience and flexibility of tightening the main nut 3.

[0047] In some embodiments, an anti-loosening washer or threadlocker is provided between the main nut 3 and the main stud 2, or between the main nut 3 and the interior locking cover plate 1.

[0048] For example, to improve the stability and reliability of the door lock installation device and prevent threads from loosening, anti-loosening washers or thread-locking adhesive are provided between the main nut 3 and the main stud 2, or between the main nut 3 and the interior lock cover plate 1. For example, a spring washer can be placed between the main nut 3 and the main stud 2, using the elastic deformation of the spring washer to provide pre-tightening force and prevent threads from loosening; or when using thread-locking adhesive, an appropriate amount of thread-locking adhesive can be applied to the threads of the main stud 2 or the second threaded hole 31 of the main nut 3, and after the thread-locking adhesive has cured, the firmness of the threaded connection can be enhanced.

[0049] In some embodiments, such as Figure 3 As shown, the end 21 of the main stud 2 is provided with a guide chamfer or tapered head to facilitate passing through the locking screw hole 211.

[0050] For example, to facilitate the main stud 2 passing through the screw hole 211 on the screw 210, a guide chamfer or tapered head is provided at the end 21 of the main stud 2. For example, the end of the main stud 2 can be machined into a 45° guide chamfer, or designed into a tapered head shape. This design allows the main stud 2 to enter the hole more smoothly when passing through the screw hole 211, reducing resistance during installation and improving installation efficiency.

[0051] For example, a radial opening can be provided on the side wall of the main nut 3, which mates with the main stud 2. This opening is used to insert an anti-tamper pin (such as a cotter pin, spring-loaded pin, or shear pin) after the door lock 100 is installed and tightened. After the pin is inserted, the main nut 3 cannot be unscrewed in the reverse direction, or forcibly unscrewing it will damage the pin, thus effectively preventing malicious disassembly of the outdoor lock 20 and greatly improving physical security. For example, the anti-tamper pin can be a disposable shear pin, which will leave obvious damage marks after disassembly, serving as a warning.

[0052] The door lock installation device 10 provided in this application embodiment has significant advantages in terms of installation convenience, cost-effectiveness, compatibility and strength adaptability through its unique structural design.

[0053] In this embodiment, the main stud 2 is pre-fixed to the outdoor lock screw post 4 at the factory during installation. During installation, the operator places the outdoor lock 20 on the outside of the door 200, simultaneously completing the insertion of the main stud 2 into the lock screw hole 211 on the lock screw 210. Subsequently, the main nut 3 is directly screwed into and fixed to the main stud 2 from the inside of the door. This process simplifies the installation sequence, breaking down the long-path "blind installation" operation of traditional solutions into two intuitive and reliable steps: "pre-insertion" and "direct screwing." This fundamentally avoids the alignment problems caused by excessively long paths and numerous parts, significantly improving installation efficiency and success rate.

[0054] This application eliminates the need for sized positioning rings used in traditional door panel lock hole diameter fitting solutions. This design not only reduces the number of parts, lowering material and management costs, but also eliminates the reliance on the accuracy of the door panel lock hole 220 (such as the common 38mm or 54mm) drilled by the user during installation. Since the main stud 2 passes through the locking screw hole 211, the engagement between the main stud 2 and the through hole 11 of the interior lock cover plate 1 and the main nut 3 is independent of the edge of the door panel lock hole 220 for positioning. Therefore, it can linearly accommodate variations in hole diameter within a certain range, ensuring consistency and stability in installation experience, efficiency, and final fixation reliability under different working conditions.

[0055] The specifications of the main stud 2 in this embodiment can be selected according to different diameters based on the target performance level: for example, to meet the highest Grade 1 level, an M6 specification can be selected; to meet the mainstream Grade 2 level, an M5 specification can be selected; and to meet the basic Grade 3 level, an M4 specification can be selected. In this way, the same basic structure can achieve full grade coverage.

[0056] In this embodiment, the pre-fixation of the outdoor locking screw post 4 and the main screw post 2, and the design that the main nut 3 and the outdoor locking screw post 4 have the same thread direction, ensure that the force transmission direction is consistent when finally tightening, and prevent reverse loosening.

[0057] This application embodiment achieves a unique installation logic by designing that the depth of the second threaded hole 31 on the main nut 3 is shallower than the depth of the first threaded hole 41 on the outdoor locking screw post 4, so that the main nut 3 is first fixed to the main screw post 2 and then screwed in together as a whole.

[0058] In this embodiment, by providing a first threaded hole 41 with sufficient depth (e.g., not less than 15mm) for the outdoor lock screw post 4, the main stud 2 is provided with sufficient adjustment stroke, thereby reliably adapting to door thicknesses ranging from 35mm to 55mm.

[0059] The embodiments of this application utilize the configurability of the diameter of the main stud 2 to make the door lock mounting device 10 a universal device that can flexibly meet the BHMA strength requirements of various grades from Grade 3 to Grade 1.

[0060] All of the above technical solutions can be combined in any way to form optional embodiments of this application, and will not be described in detail here.

[0061] The door lock installation device provided in this application includes an indoor lock cover plate 1, a main stud 2, a main nut 3, and an outdoor lock screw post 4. The indoor lock cover plate 1 has a through hole 11 that matches the main nut 3. The outdoor lock screw post 4 has a first threaded hole 41 that matches the main stud 2. The first threaded hole 41 is used to pre-fix the first end of the main stud 2 before the door lock is installed. The main nut 3 has a second threaded hole 31 that matches the main stud 2. The second threaded hole 31 is used to thread the second end of the main stud 2 during the door lock installation. The thread direction of the second end of the main stud 2 that mates with the main nut 3 is the same as the thread direction of the first end of the main stud 2 that mates with the outdoor lock screw post 4. The door lock installation device provided in this application embodiment has a pre-fixed structure by pre-engaging the main stud 2 with the outdoor lock screw stud 4, and a unidirectional double-thread design with the threads at both ends of the main stud 2 having the same direction of rotation. This achieves precise positioning and bidirectional fastening of the main stud 2 during installation, which avoids the risk of parts falling off due to external impact in traditional installation methods. The adjustable length of the main stud 2 can adapt to door bodies of different thicknesses. At the same time, this structure can adapt to the strength requirements of different safety levels in the door lock performance grading standard, which significantly improves the ease of installation, structural reliability and standard compatibility.

[0062] Please see Figure 1 This application provides a door lock 100. The door lock 100 includes a door lock mounting device 10 as described in any of the preceding embodiments. Specifically, the outdoor lock screw post 4 of the door lock mounting device 10 serves as the core load-bearing structure and is integrated into the body of the outdoor lock 20 of the door lock 100; the indoor lock cover plate 1 of the door lock mounting device 10 constitutes the appearance and supporting body of the indoor side of the door lock 100.

[0063] The door lock 100 is installed and fixed by the door lock mounting device 10. During installation, the outdoor lock 20, which has a pre-fixed main stud 2, is placed on the outside of the door body 200, and the main stud 2 passes through the screw hole 51 of the door lock 210; the indoor lock cover plate 1 is located on the inside of the door body 200 and is fitted onto the main stud 2; by tightening the main nut 3 from the inside, the same thread direction as the outdoor lock stud 4 and the shallower hole depth are used to achieve the installation effect of fixing first and then tightening as a whole, thereby firmly clamping the outdoor lock 20 and the indoor lock cover plate 1 onto the door body 200.

[0064] Thanks to the unique design of the door lock mounting device 10, the door lock 100 boasts exceptional ease of installation, completely solving the blind installation problem inherent in traditional solutions. Furthermore, its structure is compatible with door thicknesses ranging from 35mm to 55mm and door panel lock hole tolerances of 38mm / 54mm. More importantly, by selecting different diameter main studs 2 (such as M4, M5, M6), the door lock 100 can flexibly meet different strength and security level requirements from BHMA Grade 3 to Grade 1, achieving a balance between high performance and high versatility.

[0065] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0066] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A door lock mounting device, characterized in that, Includes the indoor lock cover plate, main stud, main nut, and outdoor lock screw stud; The indoor lock cover plate has a through hole that matches the main nut; The outdoor lock screw post is provided with a first threaded hole that matches the main stud. The first threaded hole is used to pre-fix the first end of the main stud before the door lock is installed. The main nut has a second threaded hole that matches the main stud. The second threaded hole is used to connect with the second end of the main stud during door lock installation. The thread direction of the second end of the main stud that mates with the main nut is the same as the thread direction of the first end of the main stud that mates with the outdoor locking screw.

2. The door lock installation device as described in claim 1, characterized in that, The depth of the second threaded hole on the main nut is shallower than the depth of the first threaded hole on the outdoor locking screw post.

3. The door lock installation device as described in claim 1, characterized in that, Before the door lock is installed, the first end of the main stud is screwed into the first threaded hole and pre-fixed with the outdoor lock screw stud. When installing the door lock, place the outdoor lock with the pre-fixed main stud on the outside of the door so that the main stud passes through the lock bolt and lock bolt screw hole on the door. The main stud is pre-assembled by passing it through the through hole on the interior lock cover plate. The main nut is then inserted into the through hole to engage with the main stud and tightened to secure it.

4. The door lock installation device as described in claim 3, characterized in that, During the tightening of the main nut, the main nut and the main stud are tightened and fixed as a whole; as the main nut continues to be screwed in, the main nut pushes the main stud deeper into the outdoor locking screw stud until the main nut reaches the surface of the indoor locking cover and is fixed.

5. The door lock installation device as described in claim 1, characterized in that, The depth of the first threaded hole on the outdoor locking screw post meets a preset depth range so that the adjustable stroke of the main stud in the outdoor locking screw post can adapt to different door thicknesses.

6. The door lock installation device as described in claim 1, characterized in that, The interior lock cover is made of metal. When the main nut is tightened to its final position, the interior lock cover undergoes elastic deformation.

7. The door lock installation device as described in claim 1, characterized in that, The main stud is pre-screwed into the outdoor locking screw stud to a depth of not less than 3mm.

8. The door lock installation device as described in claim 1, characterized in that, The diameter of the main stud is configured to match different security levels specified in the door lock performance grading standard.

9. The door lock installation device as described in claim 1, characterized in that, The diameter of the through hole on the indoor lock cover is larger than the diameter of the main stud.

10. A door lock, characterized in that, The door lock includes a door lock mounting device as described in any one of claims 1 to 9.

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