Door lock handle convenient dismounting and replacing structure

Abstract

The utility model provides a door lock handle convenient to replace structure relates to the field of lockset, include: door lock main part, its panel front and back are provided with handle base body, cover, its appearance with handle base body's outer contour is compatible and is used for covering handle base body, fixed mechanism is used for with cover detachably connected on handle base body, the edge of cover is equipped with finger and scratches part, the utility model discloses through setting up detachable cover and fixed mechanism on handle base body, will handle's base body function and appearance decoration separate, fundamentally solved the single appearance, the drawback of unchangeable, user need not to replace whole lock body, only through dismouting cover can change handle color and line at will, has met the individualized demand, its simple structure has realized quick, convenient appearance upgrade, has improved the user experience remarkably.

Description

Technical Field

[0001] This utility model relates to the field of locks, and in particular to a structure for easy replacement of door lock handles. Background Technology

[0002] Door lock handles, as a common functional component in homes, are not only used for opening and closing doors, but are also increasingly becoming decorative elements. People want handles to have diverse appearances and be easy to replace to match different home styles.

[0003] Currently, the appearance of household door lock handles is mostly formed directly onto the handle surface through electroplating, surface chemical treatment, or spraying. These treatments give the handle a fixed color and texture, but once the appearance is formed, it is difficult to change. Some existing technologies attempt to change the appearance through removable covers or coating structures, but these usually require complex installation steps or multiple parts.

[0004] In the aforementioned prior art, the handle's appearance is fixed and inconvenient to replace, and users cannot freely adjust the color and texture according to their personal preferences. Furthermore, existing replaceable structures often rely on tools or involve cumbersome disassembly, making operation complex and unable to achieve quick and easy replacement. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by incorporating a detachable cover and fixing mechanism into the handle base, separating the handle's base function from its aesthetic appearance. This fundamentally solves the problems of a monotonous and unchangeable appearance. Users can easily change the handle's color and texture simply by removing and installing the cover, without replacing the entire lock body, thus satisfying their personalization needs. Its simple structure enables quick and convenient appearance upgrades, significantly enhancing the user experience.

[0006] To solve the above-mentioned technical problems, this utility model solves the problem of traditional handles having a single appearance and being unreplaceable through the following technical solution.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A door lock handle replacement mechanism includes: The door lock body has handle bases on both the front and back of its panel. A cover, the shape of which is adapted to the outer contour of the handle base and is used to cover the handle base; A fixing mechanism for detachably connecting the cover to the handle base; The edge of the cover is provided with a finger-grip area.

[0008] Preferably, the cover is formed by joining an upper shell and a lower shell that are symmetrically arranged on the top and bottom.

[0009] Preferably, the finger-grip portion consists of symmetrical grooves respectively formed on the corresponding outer walls of the upper shell and the lower shell, which together form a complete groove structure after being spliced ​​together.

[0010] Preferably, the fixing mechanism includes a locking screw and a limiting cylinder. The upper shell has an opening inside for accommodating the locking screw. The limiting cylinder is fixed to the inner wall of the lower shell. The handle base has a through-hole structure in the middle. The head end of the locking screw and the head end of the limiting cylinder pass through the through-hole structure.

[0011] Preferably, the fixing mechanism has two sets, which are arranged symmetrically with the center line of the handle base.

[0012] Preferably, the head of the locking screw is provided with an external thread section, the top of the limiting cylinder is provided with a threaded groove that matches the external thread section, and the tail of the locking screw is provided with a driving part, which is housed inside the opening when it is tightened.

[0013] Preferably, the perforated structure consists of an upper perforation and a lower perforation that are connected to each other. The diameter of the upper perforation is smaller than the diameter of the lower perforation. The head end of the locking screw passes through the upper perforation of the perforated structure, and the head end of the limiting cylinder passes through the lower perforation of the perforated structure.

[0014] Preferably, a rubber stabilizing ring is fitted around the outer periphery of the head of the limiting cylinder, and the stabilizing ring fits against the inner wall of the lower through hole.

[0015] Preferably, the inner edge of the upper shell is provided with a downwardly extending inner positioning edge, and the inner edge of the lower shell is provided with a positioning groove that engages with the inner positioning edge.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The door lock handle provided in this application features a convenient replacement structure. By incorporating a detachable cover and fixing mechanism into the handle base, the basic function of the handle is separated from its aesthetic appearance, fundamentally solving the drawbacks of a monotonous and unchangeable appearance. Users can freely change the color and texture of the handle simply by removing and installing the cover, without replacing the entire lock body, thus satisfying their personalization needs. Its simple structure enables quick and convenient appearance upgrades, significantly enhancing the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of a partially disassembled structure of the present invention; Figure 4 This is a schematic diagram of the casing structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the handle base and the cover of this utility model; Figure 6 This is a partial cross-sectional structural diagram of the handle base of this utility model; Figure 7 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0019] Drawing number explanation: 1. Door lock body; 2. Handle base; 3. Cover; 31. Upper shell; 32. Lower shell; 33. Finger grip; 34. Inner positioning edge; 4. Locking screw; 41. Drive unit; 42. Opening; 5. Limiting cylinder; 51. Threaded groove; 52. Stabilizing ring; 6. Perforated structure; 61. Upper perforation; 62. Lower perforation. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0024] Example: Please see Figure 1-7 A door lock handle replacement structure is disclosed, comprising: a door lock body 1, with a handle base 2 and a cover 3 on the front and back of the panel, the cover 3 having an outline that matches the outer contour of the handle base 2 and covers the handle base 2; a fixing mechanism for detachably connecting the cover 3 to the handle base 2; and a finger-grip portion 33 on the edge of the cover 3. The door lock handle replacement structure of this application mainly includes a door lock body 1, a handle base 2, a cover 3, and a fixing mechanism.

[0025] The door lock body 1 serves as the mounting base, and each of its front and back panels typically has a handle base 2. This handle base 2 is the core operating component of the door lock, and it contains a conventional lock cylinder transmission structure. The main innovation of this invention lies in the fact that a removable cover 3 is wrapped around the handle base 2.

[0026] The shape of the cover 3 is adapted to the outer contour of the handle base 2, like a shell or skin tightly wrapping around the handle base 2. The cover 3 is preferably formed by joining an upper shell 31 and a lower shell 32 that are symmetrically arranged vertically. This split design greatly facilitates production and assembly.

[0027] To improve the accuracy and ease of assembly, an inner positioning edge 34 extends integrally downward from the inner edge of the upper shell 31. Correspondingly, a positioning groove matching the inner contour is formed on the inner edge of the lower shell 32. During assembly, the inner positioning edge 34 engages with the positioning groove, achieving pre-positioning of the upper shell 31 and the lower shell 32 and preventing misalignment during subsequent fixing.

[0028] At key locations along the edge of the casing 3, symmetrical grooves are formed on the corresponding outer walls of the upper casing 31 and the lower casing 32, serving as finger-penetrating parts 33. When the upper casing 31 and the lower casing 32 are assembled, the two half-grooves align perfectly, forming a complete groove structure that facilitates finger insertion. This design not only facilitates disassembly but also provides intuitive guidance and positioning during installation.

[0029] The fixing mechanism is the core of realizing the detachable function of the cover 3. In this preferred embodiment, the mechanism includes a locking screw 4 and a limiting cylinder 5. Inside the upper shell 31, there is an opening 42 for accommodating the locking screw 4. On the inner wall of the lower shell 32, the limiting cylinder 5 is fixedly connected. In the middle of the handle base 2, a perforated structure 6 is pre-drilled. The perforated structure 6 consists of an upper perforation 61 and a lower perforation 62 that are connected, and the diameter of the upper perforation 61 is smaller than the diameter of the lower perforation 62, forming a stepped structure. The head end of the locking screw 4 passes through the upper perforation 61 of the perforated structure 6, and the head end of the limiting cylinder 5 passes through the lower perforation 62 of the perforated structure 6.

[0030] To enhance stability after connection, a stabilizing ring 52 made of rubber is fitted around the outer periphery of the head of the limiting cylinder 5. As a preferred reinforcement solution, two sets of fixing mechanisms can be provided and arranged symmetrically about the center line of the handle base 2 to ensure that the cover 3 is subjected to uniform force and the connection is more secure.

[0031] In a preferred embodiment, the head of the locking screw 4 is machined with an external thread section, while the top of the limiting cylinder 5 has a matching threaded groove 51. The tail of the locking screw 4 is provided with a driving part 41, which can be any structure that can mate with a tool, such as an internal hexagonal hole or a cross groove. Crucially, the length of the locking screw 4 is precisely calculated so that when it is fully screwed into the threaded groove 51 of the limiting cylinder 5 and locked, the driving part 41 at its tail can be completely hidden inside the opening 42 of the upper shell 31, making any fasteners invisible from the outside, thus ensuring the integrity and aesthetics of the cover 3.

[0032] Working principle First, fasten the lower shell 32 onto the lower half of the handle base 2, so that the head of the limiting cylinder 5 fixed on the lower shell 32, and the rubber stabilizing ring 52 thereon, pass through the larger diameter lower through hole 62 in the through hole structure 6 of the handle base 2. At the same time, align the upper shell 31 with the positioning groove of the lower shell 32 through its inner positioning edge 34 and initially engage it. During this process, ensure that the head of the locking screw 4 inside the upper shell 31 can smoothly pass through the smaller diameter upper through hole 61 in the through hole structure 6. Using a special tool, such as an Allen wrench, insert the drive part 41 at the tail of the locking screw 4 and rotate the locking screw 4 so that the external thread section of its head gradually screws into the threaded groove 51 at the top of the limiting cylinder 5. As it is tightened, the upper shell 31 and the lower shell 32 are pulled together and tightly wrap around the handle base 2.

[0033] The installation is complete when the locking screw 4 is tightened until its tail drive part 41 is completely hidden in the opening 42 of the upper shell 31. At this time, the rubber stabilizing ring 52 of the head of the limiting cylinder 5 is tightly fitted with the inner wall of the lower through hole 62 of the perforated structure 6, effectively preventing shaking and abnormal noise during use and ensuring the stability of the structure. When the user wants to replace the cover 3 with a different color or pattern, firstly, a tool such as an Allen wrench needs to be inserted into the opening 42 of the upper shell 31 and rotated counterclockwise to loosen the locking screw 4, so that the external thread section of its head completely exits from the threaded groove 51 of the limiting cylinder 5, thereby releasing the fastening connection between the upper shell 31 and the lower shell 32.

[0034] After the fixing mechanism is loosened, the user can insert their fingers into the complete groove formed by the finger-pry part 33 on the edge of the cover 3, and with a little force, pry open the upper cover 31 and the lower cover 32, thus separating the cover 3 from the handle base 2. The entire cover 3 can then be removed. Replace with a new cover 3 and repeat the above installation steps to quickly refresh the appearance of the door lock handle.

[0035] In summary, the separate design of the detachable cover 3 and the handle base 2, combined with the concealed fixing mechanism consisting of the locking screw 4 and the limiting cylinder 5, enables quick and convenient replacement of the door lock handle's appearance. Its finger-operated part 33 and pre-positioning structure ensure accurate installation and simple operation, meeting users' pursuit of personalized and diverse home decoration while guaranteeing the product's stability and aesthetics.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A door lock handle replacement mechanism, characterized in that, include: The door lock body (1) has a handle base (2) on the front and back of its panel. The cover (3) is adapted to the outer contour of the handle base (2) and is used to cover the handle base (2). A fixing mechanism for detachably connecting the cover (3) to the handle base (2); The edge of the cover (3) is provided with a finger-grip part (33).

2. The door lock handle easy-to-replace structure according to claim 1, characterized in that: The cover (3) is formed by joining an upper shell (31) and a lower shell (32) that are symmetrically arranged on the top and bottom.

3. The door lock handle easy-to-replace structure according to claim 2, characterized in that: The finger-picking part (33) is a symmetrical groove opened on the corresponding outer wall of the upper shell (31) and the lower shell (32), and together they form a complete groove structure after being spliced.

4. The door lock handle easy-to-replace structure according to claim 3, characterized in that: The fixing mechanism includes a locking screw (4) and a limiting cylinder (5). The upper shell (31) has an opening (42) for accommodating the locking screw (4). The limiting cylinder (5) is fixed to the inner wall of the lower shell (32). The handle base (2) has a perforated structure (6) in the middle. The head end of the locking screw (4) and the head end of the limiting cylinder (5) pass through the perforated structure (6).

5. The door lock handle easy-to-replace structure according to claim 4, characterized in that: The fixing mechanism is provided in two sets, which are arranged symmetrically with the center line of the handle base (2).

6. The door lock handle easy-to-replace structure according to claim 4, characterized in that: The head of the locking screw (4) is provided with an external thread section, the top of the limiting cylinder (5) is provided with a thread groove (51) that is compatible with the external thread section, the tail of the locking screw (4) is provided with a driving part (41), and when it is tightened, the driving part (41) is housed inside the opening (42).

7. The door lock handle easy-to-replace structure according to claim 6, characterized in that: The perforated structure (6) consists of an upper perforation (61) and a lower perforation (62) that are connected. The diameter of the upper perforation (61) is smaller than the diameter of the lower perforation (62). The head end of the locking screw (4) passes through the upper perforation (61) of the perforated structure (6), and the head end of the limiting cylinder (5) passes through the lower perforation (62) of the perforated structure (6).

8. The door lock handle easy-to-replace structure according to claim 7, characterized in that: The outer periphery of the head of the limiting cylinder (5) is fitted with a rubber stabilizing ring (52), which is in contact with the inner wall of the lower through hole (62).

9. The door lock handle easy-to-replace structure according to claim 2, characterized in that: The inner edge of the upper shell (31) is provided with an inner positioning edge (34) extending downward, and the inner edge of the lower shell (32) is provided with a positioning groove that engages with the inner positioning edge (34).

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