Handle panel lock

Abstract

The utility model provides a handle panel lock which comprises a panel, the panel is provided with a connecting hole, a first mounting ring and a second mounting ring, the first mounting ring and the second mounting ring are coaxial, a torsion spring is arranged between the first mounting ring and the second mounting ring, and limiting strips at the two ends are restrained by limiting parts. The rear end of the handle is sleeved with the torsion plate, the handle and the torsion plate are in linkage with the first linkage part through the limiting groove, and the handle rotates to drive the torsion plate so as to drive the lock to act and reset under the action of the torsion spring after being loosened. The nut is in threaded connection with the rear end of the handle, a linkage piece is arranged between the nut and the torsion plate, and a third linkage part can be clamped into a nut positioning groove to prevent looseness. The panel is in screw connection with the cover plate through the fixing part and the limiting part, and a plastic sleeve in the second mounting ring reduces friction and noise. The lock is ingenious in structure, convenient to mount and dismount, high in stability, capable of effectively improving the use performance and prolonging the service life and suitable for various door bodies.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a lever panel lock. Background Technology

[0002] Lever handle panel locks, widely used in various types of doors, play a crucial role in ensuring door security and ease of use. Currently, common lever handle panel locks are typically installed on the inside and outside of the door, with both handles facing the door's rotation center. However, in practical applications, when it's necessary to install a lever handle panel lock originally installed on the inside of the door to the outside, or vice versa, the handle often needs to be disassembled to adjust its direction. But disassembling the handle presents several problems. First, after disassembling the handle, other internal components of the panel lock are prone to loosening, which not only increases the difficulty of subsequent reinstallation but may also affect the stability and reliability of the lock during use. Second, reinstalling a lever handle panel lock is complex, requiring significant time and effort, and is difficult for non-professionals to complete, often making it hard to guarantee installation quality, which may affect the normal function of the lock.

[0003] To address the disassembly and installation difficulties arising from handle direction adjustment, a new type of lever-handle panel lock has emerged on the market. This type of handle consists of a head and a grip section, with the head connected to the panel. Adjusting the handle direction only requires disassembling the grip section, simplifying the process to some extent. However, long-term market feedback has revealed that these lever-handle locks are prone to wobbling and sagging after prolonged and frequent use, leading to a widening gap between the handle and the panel. This not only affects the lock's aesthetics but also allows dust and debris to more easily enter the lock, accelerating wear on internal components, reducing its lifespan, and potentially threatening its security performance. For example, in extreme cases, it may prevent the lock from locking or unlocking properly, causing inconvenience and security risks for users. Summary of the Invention

[0004] In view of the problems pointed out in the background art, this utility model proposes a lever panel lock to solve the above-mentioned technical problems.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A lever panel lock includes a panel with a connecting hole. A rotatable lever is connected to the connecting hole, and the rear end of the lever extends into the panel. A torsion plate that rotates with the lever is sleeved on the rear end of the lever. A torsion spring is provided between the torsion plate and the panel. A nut is threadedly connected to the rear end of the lever and is located on the rear side of the torsion plate. The lock also includes a cover plate connected to the panel and located on the rear side of the torsion plate. An opening is provided on the torsion plate, and the nut is located in the opening.

[0007] The present invention is further configured such that the opening and the connecting hole are coaxially arranged, and the outer diameter of the torsion plate is larger than the diameter of the opening.

[0008] The present invention is further configured such that the inner sidewall of the panel is provided with a first mounting ring and a second mounting ring coaxial with the connecting hole, the outer diameter of the second mounting ring is smaller than the inner diameter of the first mounting ring, a torsion spring is provided in the area between the first mounting ring and the second mounting ring, the first mounting ring is provided with a notch, the panel is provided with a limiting part corresponding to the notch, the two ends of the torsion spring extend into limiting strips respectively, the two limiting strips are located on both sides of the limiting part and abut against the limiting strips, the torsion plate is provided with a torsion part protruding towards the side where the panel is located, and the torsion part is located between the two limiting strips.

[0009] The present invention is further configured such that the torsion plate is annular, the outer diameter of the torsion plate is equal to the inner diameter of the first mounting ring, the inner diameter of the torsion plate is equal to the diameter of the handle, the handle is provided with a limiting groove, and the torsion plate is provided with a first linkage part extending into the limiting groove.

[0010] The present invention is further configured such that the front side of the torsion plate abuts against the second mounting ring, and the rear side of the torsion plate is flush with the rear side of the first mounting ring.

[0011] The present invention is further configured such that an annular linkage plate is provided between the nut and the torsion plate, the linkage plate is provided with a second linkage part connected to the limiting groove, the edge of the linkage plate is provided with a bendable third linkage part, and the edge of the nut is provided with a plurality of positioning grooves along its circumference. The third linkage part can be bent into the positioning groove to prevent the nut from rotating.

[0012] The present invention is further configured such that the panel is provided with two fixing parts, the fixing parts and the limiting parts are provided with threaded holes, the cover plate is provided with through holes corresponding to the threaded holes, and screws are connected in the through holes and the threaded holes.

[0013] The present invention is further configured such that the inner diameter of the second mounting ring is larger than the diameter of the connecting hole, and a plastic sleeve is adapted to be connected inside the second connecting ring, the inner diameter of the plastic sleeve being equal to the diameter of the handle.

[0014] The present invention is further provided that the plastic sleeve has an annular groove on one side of its axial direction, and a connecting rib is provided in the groove.

[0015] The present invention is further configured such that the rear sides of the first mounting ring, the fixing part, and the limiting part are flush with each other.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] First, it excels in ease of installation and disassembly. With traditional lever-type panel locks, disassembling the lever when adjusting its direction can easily loosen internal components, making reinstallation time-consuming, laborious, and difficult for non-professionals. This patented design solves this problem through a unique approach. When the lever needs to be completely removed, simply unscrew the nut, and the lever can be easily removed from the connection hole. The cover plate plays a crucial role in this process, firmly securing the torsion plate and torsion spring between the panels. Even after the lever is removed, these key components remain secure, maintaining their original installation position. Subsequent reinstallation is straightforward, requiring no complex adjustments, significantly saving time and effort, and making it easy for ordinary users to operate.

[0018] Secondly, it boasts outstanding advantages in stability and durability. After prolonged and frequent use, ordinary lever handle locks often exhibit problems such as wobbling, sagging, and increased gaps between the handle and the panel, affecting both aesthetics and safety. This patented structural design effectively avoids these problems. The handle, panel, and torsion plate fit together tightly, and the nut precisely secures the handle's axial position, ensuring smooth and stable rotation. The torsion spring provides just the right amount of restoring force, allowing the handle to quickly return to its original position after operation, reducing component wear, extending the lock's lifespan, maintaining excellent performance over the long term, and providing reliable security for the door.

[0019] Furthermore, the design of the opening is ingenious, fully exposing the nut for easy disassembly, further optimizing the maintenance process, lowering the repair threshold, and comprehensively improving the practicality and user experience of the handle panel lock. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a structural schematic diagram of the cover plate of this utility model after disassembly.

[0023] Figure 3This is an exploded structural diagram of the cover plate, nut, and linkage plate of this utility model.

[0024] Figure 4 This is an exploded structural diagram of the cover plate, nut, linkage plate, and torsion plate of this utility model.

[0025] Figure 5 This is a structural diagram showing the disassembled handle and plastic sleeve of this utility model.

[0026] The following are the labels in the attached drawings: Panel 1, Handle 02, Connecting hole 2, Torsion plate 3, Torsion spring 4, Nut 5, Cover plate 6, Opening 7, First mounting ring 8, Second mounting ring 9, Notch 10, Restriction part 11, Restriction strip 12, Torsion part 13, Restriction groove 14, First linkage part 15, Linkage plate 16, Second linkage part 17, Third linkage part 18, Positioning groove 19, Fixing part 20, Threaded hole 21, Through hole 22, Screw 23, Plastic sleeve 24, Groove 241, Connecting rib 242. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] For reference as follows Figures 1-5 The present invention will be described as follows:

[0029] Example: A lever handle panel lock includes a panel 1, which serves as the basic load-bearing component of the entire lever handle panel lock and plays a key role in fixing and supporting other components.

[0030] The panel 1 is provided with a connecting hole 2, and a rotatable handle 02 is connected inside the connecting hole 2. The connecting hole 2 is the key part for connecting the handle 02 and the panel 1. The diameter, shape and precision of the connecting hole 2 have been carefully designed to ensure that the handle 02 can rotate smoothly without causing excessive wobbling gaps, which would affect the feel of the handle operation and the reliability of the entire lock.

[0031] Handle 02 is the part directly operated by the user. Its front end is exposed on panel 1, making it easy for the user to grip and apply force to open and close the door. The rear end extends into panel 1. This design allows the rotation of handle 02 to drive the related internal components to work together, thereby realizing the locking and unlocking functions of the lock.

[0032] The rear end of the handle 02 is fitted with a torsion plate 3 that can rotate with the handle 02. A torsion spring 4 is provided between the torsion plate 3 and the panel 1. The rear end of the handle 02 is threaded with a nut 5. The nut 5 is located on the rear side of the torsion plate 3 and is used to fix the handle 02 axially.

[0033] It also includes a cover plate 6 connected to the panel 1. The cover plate 6 is located behind the torsion plate 3. The torsion plate 3 has an opening 7, and the nut 5 is located in the opening 7. The nut 5 can be positioned exactly in the opening 7, which does not hinder the normal rotation of the torsion plate 3, and can fully expose the nut 5 when it is necessary to disassemble the handle 02, so that the operator can use tools to disassemble the nut 5.

[0034] A torsion spring 4 is installed between the torsion plate 3 and the panel 1. It uses its own elastic properties to provide a restoring force for the rotation of the handle 02. When the user rotates the handle 02 to perform an unlocking or locking operation, the torsion spring 4 can cause the handle 02 to automatically return to its initial position.

[0035] The main function of nut 5 is to fix the handle 02 axially, prevent the handle 02 from moving axially during use, and thus ensure the connection stability between the handle 02 and components such as torsion plate 3 and panel 1.

[0036] The cover plate 6 is connected to the panel 1 and is located behind the torsion plate 3. Its presence provides additional protection and limiting function for the torsion plate 3 and the torsion spring 4. The cover plate 6 restricts the torsion plate 3 and the torsion spring 4 between the panels 1, ensuring that the torsion plate 3 and the torsion spring 4 will not loosen even when the handle 02 is removed, maintaining their original installation state. This greatly facilitates the subsequent reinstallation of the handle 02 or the maintenance of the lock, reducing the tedious process of readjustment due to loose parts.

[0037] When it is necessary to disassemble the handle 02, the operator only needs to use a suitable tool, such as a wrench, to remove the nut 5. Since the handle 02 is connected to the panel 1 only through the connection hole 2 and the axial fixation of the nut 5, once the nut 5 is removed, the handle 02 is released from axial constraint and can then be easily removed from the connection hole 2. During this process, the cover plate 6 plays a crucial stabilizing role. Because the cover plate 6 firmly restricts the torsion plate 3 and the torsion spring 4 between the panels 1, the torsion plate 3 and the torsion spring 4 will not loosen or shift due to the loss of constraint from the handle 02 when disassembling the handle 02; they can still maintain their original installation state. This design avoids the problem of internal components easily loosening during the disassembly of traditional handle panel locks, leading to difficult, time-consuming, and laborious reinstallation. Meanwhile, the opening 7 on the torsion plate 3 greatly facilitates the disassembly work, allowing the nut 5 to be fully exposed. Operators can directly and conveniently operate the nut 5 without having to spend extra time and effort to find or clean the operating space of the nut 5, which greatly improves the disassembly efficiency. Whether it is a professional maintenance personnel or an ordinary user, they can easily complete the disassembly of the handle 02.

[0038] The opening 7 and the connecting hole 2 are coaxially arranged, and the outer diameter of the torsion plate 3 is larger than the diameter of the opening 7.

[0039] The inner wall of panel 1 is provided with a first mounting ring 8 and a second mounting ring 9, which are coaxial with the connecting hole 2. This coaxial layout provides a precise positioning reference for the installation and coordinated operation of subsequent components. The outer diameter of the second mounting ring 9 is smaller than the inner diameter of the first mounting ring 8, and the annular area formed between them becomes the dedicated "placement space" for the torsion spring 4. The torsion spring 4 is located in the area between the first mounting ring 8 and the second mounting ring 9. This design allows the torsion spring 4 to be stably positioned in the predetermined position, preventing it from wobbling and affecting the lock's performance, and facilitating its cooperation with surrounding components.

[0040] The first mounting ring 8 has a notch 10, and the panel 1 has a limiting part 11 corresponding to the notch 10, which is custom-made for the limiting strips 12 at both ends of the torsion spring 4.

[0041] The torsion spring 4 has two limiting strips 12 extending from its two ends. The two limiting strips 12 are located on both sides of the limiting part 11 and abut against the limiting strips 12. The torsion plate 3 has a torsion part 13 protruding towards the side where the panel 1 is located. The torsion part 13 is located between the two limiting strips 12. The torsion spring 4 provides reliable elastic support for the stable reset of the handle 02.

[0042] The torsion plate 3 is annular, and its outer diameter is equal to the inner diameter of the first mounting ring 8. The inner diameter of the torsion plate 3 is equal to the diameter of the handle 02, which ensures that the torsion plate 3 can rotate smoothly inside the panel 1 without radial displacement.

[0043] The handle 02 is provided with a limiting groove 14, and the torsion plate 3 is provided with a first linkage part 15 that extends into the limiting groove 14, realizing efficient linkage between the two. When the user rotates the handle 02, the first linkage part 15, due to its tight embedding in the limiting groove 14, can accurately drive the torsion plate 3 to rotate synchronously, seamlessly transmitting the operating force of the handle 02 to the torsion plate 3.

[0044] The front side of the torsion plate 3 abuts against the second mounting ring 9, and the rear side of the torsion plate 3 is flush with the rear side of the first mounting ring 8. This close-fitting installation ensures the stability of the torsion plate 3 during rotation, avoiding the impact on the linkage effect and the overall performance of the lock due to back-and-forth swaying.

[0045] A ring-shaped linkage plate 16 is provided between the nut 5 and the torsion plate 3. The linkage plate 16 is a key component to ensure the stable fixation of the nut 5. The second linkage part 17 on the linkage plate 16 is connected to the limiting groove 14 of the handle 02, further strengthening the linkage relationship between the handle 02, the torsion plate 3 and the nut 5, so that the three can mutually restrain and cooperate during operation. The bendable third linkage part 18 on the edge of the linkage plate 16 cooperates with several positioning grooves 19 arranged circumferentially on the edge of the nut 5. When the nut 5 is tightened, the third linkage part 18 bends into the positioning groove 19, which is like adding a "safety lock" to the nut 5. It can effectively prevent the nut 5 from loosening due to vibration, external impact and other factors during use, and ensure that the connection between the handle 02 and the panel 1 is always stable. In addition, the characteristic that the third linkage part 18 can be bent repeatedly provides convenience for the subsequent disassembly of the nut 5. When it is necessary to disassemble the nut 5, simply bend the third linkage part 18 away from the positioning groove 19, and the nut 5 can be easily unscrewed. The whole process is simple to operate and easy to maintain.

[0046] When the user rotates the handle 02, due to the tight linkage between the first linkage part 15 and the limiting groove 14, the handle 02 can precisely drive the torsion plate 3 to rotate synchronously. The torsion part 13 on the torsion plate 3 rotates accordingly, thereby driving the limiting strips 12 located on both sides to move, realizing the compression or stretching of the torsion spring 4, and completing the power transmission required for unlocking or locking. When the user releases the operation on the handle 02, under the elastic force of the torsion spring 4, the limiting strips 12, through their contact relationship with the torsion part 13, push the torsion plate 3 to rotate in the opposite direction, thereby driving the handle 02 to return to its initial state, waiting for the next operation.

[0047] The panel 1 has two fixing parts 20, and the fixing parts 20 and the limiting parts 11 have threaded holes 21. The cover plate 6 has a through hole 22 corresponding to the threaded hole 21, and screws 23 are connected in the through hole 22 and the threaded hole 21. By adopting the above technical solution, the panel 1 and the cover plate 6 are tightly fixed.

[0048] Considering the potential for significant friction between the handle 02 and panel 1 during frequent rotation, which could lead to noise and wear, a plastic sleeve 24 is specifically fitted inside the second mounting ring 9. The inner diameter of the second mounting ring 9 is larger than the diameter of the connecting hole 2, providing ample space for the installation of the plastic sleeve 24. The inner diameter of the plastic sleeve 24 is precisely equal to the diameter of the handle 02, ensuring a tight fit between the handle 02 and the plastic sleeve 24 after passing through the connecting hole 2. This not only does not affect the normal rotation of the handle 02 but also effectively reduces the coefficient of friction between the handle 02 and panel 1 by utilizing the low-friction properties of the plastic material. When the user rotates the handle 02 to open or close the door, the plastic sleeve 24 acts as a buffer and lubricant, greatly reducing noise caused by friction and slowing down the wear rate of both the handle 02 and panel 1, extending their service life and creating a quieter and more comfortable user environment.

[0049] The plastic sleeve 24 has an annular groove 241 on one axial side, and the connecting ribs 242 within the groove 241 are key to its structural stability. The design of the groove 241 reduces the overall weight of the plastic sleeve 24, helping to lower material costs without affecting its performance; on the other hand, it provides space for the connecting ribs 242. The connecting ribs 242 are distributed annularly along the groove 241, acting like the "skeleton" of the plastic sleeve 24, enhancing its radial strength. This prevents it from easily deforming when subjected to the radial pressure of the handle 02 during rotation, maintaining a tight fit with the handle 02 and ensuring a consistently stable low-friction, low-noise effect.

[0050] The rear sides of the first mounting ring 8, the fixing part 20, and the limiting part 11 are flush. This flush layout facilitates the installation of the cover plate 6. When the screw 23 fixes the cover plate 6, the rear sides are flush, and the cover plate 6 can fit tightly with these components, without any installation gaps or loosening caused by unevenness.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lever panel lock, comprising a panel, a connecting hole on the panel, a rotatable lever connected to the connecting hole, the rear end of the lever extending into the panel, a torsion plate rotatable with the lever being sleeved on the rear end of the lever, a torsion spring being provided between the torsion plate and the panel, and a nut threadedly connected to the rear end of the lever, the nut being located behind the torsion plate, characterized in that: The cover plate is connected with the panel and is located at the rear side of the torsion plate.

2. A handle panel lock according to claim 1, wherein: The opening is coaxial with the connecting hole, and the outer diameter of the torsion plate is greater than the diameter of the opening.

3. A handle panel lock according to claim 1, wherein: The inner side wall of the panel is provided with a first mounting ring and a second mounting ring coaxial with the connecting hole.

4. A handle panel lock according to claim 3 wherein: The outer diameter of the second mounting ring is smaller than the inner diameter of the first mounting ring.

5. A handle panel lock according to claim 4 wherein: The torsion spring is arranged between the first mounting ring and the second mounting ring.

6. A handle panel lock according to claim 4 wherein: The first mounting ring is provided with a notch, and the panel is provided with a limiting part corresponding to the notch.

7. A handle panel lock according to claim 3 wherein: The two limiting parts are located on the two sides of the limiting part and abut against the limiting part.

8. A handle panel lock according to claim 3 wherein: The torsion plate is annular, and the outer diameter of the torsion plate is equal to the inner diameter of the first mounting ring.

9. A handle panel lock according to claim 8 wherein: The inner diameter of the torsion plate is equal to the diameter of the handle.

10. A handle panel lock according to claim 7, wherein: The handle is provided with a limiting groove, and the torsion plate is provided with a first linkage part extending into the limiting groove. The front side of the torsion plate abuts against the second mounting ring, and the rear side of the torsion plate is flush with the rear side of the first mounting ring. The edge of the linkage plate is provided with a bendable third linkage part. The edge of the nut is provided with a plurality of positioning grooves along the circumference thereof. The third linkage part is bent into the positioning groove to prevent the nut from rotating. The panel is provided with two fixing parts, and the fixing part and the limiting part are provided with threaded holes. The cover plate is provided with through holes corresponding to the threaded holes. The through holes and the threaded holes are connected with screws. The inner diameter of the second mounting ring is greater than the diameter of the connecting hole. The second connecting ring is connected with a plastic sleeve. The plastic sleeve is provided with a connecting rib on the side surface in the axial direction. The rear side surfaces of the first mounting ring, the fixing part and the limiting part are flush.

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