Lockset handle with double-layer structure and lockset applying lockset handle

Abstract

The lock handle of the double-layer structure comprises a handle embedded module and a shell, the handle embedded module comprises a base and a handle panel, and the base comprises a base bottom plate and a base side plate; the base bottom plate and the base side plates form a base cavity, the handle panel comprises a panel main body, the panel main body is provided with a connecting step, and the shell is hollow and is provided with a shell cavity; the clutch block is rotationally arranged in the base cavity; the lock comprises an outer module, an inner module and a lock body, the lock body is provided with a spring bolt used for locking the door leaf, and the inner module comprises an inner door handle; the outer module comprises the lock handle of the double-layer structure and a hollow square shaft. An adjusting knob is arranged on the inside door handle, an adjusting block, an inductive switch, a controller and a central driving lever are arranged in the lock handle with the double-layer structure, a trigger is arranged on the adjusting block, and when the trigger is close to the inductive switch, the inductive switch sends a trigger signal to the controller.

Description

Technical Field

[0001] This invention relates to the field of lock-related technology, and in particular to a double-layered lock handle and its application in locks. Background Technology

[0002] Lock products typically include handles for ease of operation. To enhance structural strength, handles are commonly cast from aluminum alloy. However, due to limitations in metal casting technology, the wall thickness of the casting is generally set relatively thick to ensure the molten metal fills the mold cavity. For example, the minimum wall thickness of aluminum alloy castings is generally no less than 2mm to 5mm. This results in a heavier weight for the cast handle parts, significantly increasing manufacturing and transportation costs. Furthermore, the surface of the cast handle blanks is very rough, requiring multiple grinding, polishing, and electroplating processes during production, making the process extremely cumbersome. Additionally, air bubbles inevitably form inside the cast parts. If these bubbles form on the surface of the casting, they cannot be repaired by ordinary grinding and polishing processes and must be scrapped. This increases the production loss rate of cast parts, further raising manufacturing costs. Furthermore, for smart locks, electrical components and moving parts are housed inside the handle. These internal parts are typically protected by a handle cover combined with cast handle parts. However, because the edges of cast parts are uneven and difficult to control during molding, a large gap can appear when the handle cover and cast handle parts are joined. This allows external liquids and moisture to easily enter the handle, potentially causing short circuits in the electrical components. Therefore, improving the surface aesthetics of handle parts, reducing overall weight and manufacturing costs, and enhancing operational stability have become pressing issues for lock handle product manufacturing. Summary of the Invention

[0003] To overcome at least one of the aforementioned problems in existing lock handles, this invention proposes a double-layered lock handle, comprising an embedded module and a housing. The embedded module includes a base and a handle panel. The base includes a base bottom plate and a base side plate, which together form a base cavity with an opening. The handle panel includes a panel body with an inwardly recessed connecting step at its lower outer periphery. When the handle panel is closed onto the base opening, the lower surface of the panel body connects to the base side plate. Viewed from below, the base side plate falls within the projection range of the connecting step. The housing is L-shaped and includes a grip section and a connecting shaft. The grip section includes a housing bottom plate and a housing side plate. A connecting shaft is connected to one end of the shell bottom plate. The shell is hollow and has a shell cavity. The edge of the shell side plate forms a first shell opening, and the edge of the connecting shaft forms a second shell opening. The base of the handle embedded module can be inserted into the shell cavity through the first shell opening. The upper end of the shell side plate extends into the connecting step and completely covers the joint line between the panel body and the base side plate. A bottom plate through hole is provided on the shell bottom plate. A screw passes through the bottom plate through hole to connect the handle panel, thereby connecting the shell and the handle embedded module together. It also includes a clutch block rotatably disposed in the base cavity. A base through hole is provided on the base bottom plate. The lower end of the clutch block extends into the shell cavity defined by the connecting shaft through the base through hole.

[0004] The outer shell is a hollow component made of thin-walled profiles with a thickness between 0.2mm and 1.0mm. Common processing methods include stamping, welding, or 3D printing. This results in a lightweight outer shell with a versatile appearance that can be customized to various requirements. Furthermore, the L-shaped outer shell also has an L-shaped cavity, consisting of cavities defined by the grip section and the connecting shaft. This cavity not only accommodates the handle's embedded module but also conceals the downward-protruding clutch block mentioned below. The hollow square shaft can be inserted into the outer shell cavity through the second opening.

[0005] The handle embedded module is a component independent of the outer shell, and the handle embedded module can be connected to the outer shell to form a handle. In addition to the base and handle panel, the handle embedded module also includes a clutch block, a engagement block and a drive motor, a lock cylinder and a drive rod for driving the engagement block, which are disposed in the base cavity. In order to realize electrical control, a control circuit board is also included between the positioning pressure plate and the handle panel.

[0006] The base is the main supporting component in the lock handle, and its cavity provides a positioning base for various parts. Furthermore, when the handle's embedded module is installed with the outer shell, since the base is completely embedded within the shell, the handle panel and shell become external components, while the base is not. The base only needs to meet dimensional, structural strength, and safety requirements, allowing for more flexible molding methods, such as common metal die casting or plastic injection molding. No special surface treatment is required, and the base wall thickness can be made thin or have grooved structures added to reduce its weight.

[0007] The phrase "the base side plate falls within the projection range of the connecting step" means that when the base is connected to the handle panel, the handle panel can completely cover the base from above, and also cover the joint line between the panel body and the base side plate. When the base falls into the outer shell cavity, the upper end of the shell side plate will not be blocked by the base and can smoothly extend into the connecting step. From the side, the joint line between the panel body and the base side plate is also covered by the shell side plate, and external liquid cannot directly enter the base cavity.

[0008] The handle panel, an external component connecting the base and the outer shell, comprises a plate-shaped panel body. To facilitate better positioning and connection with the base, a lower protrusion is typically provided on the underside of the panel body. This lower protrusion does not extend beyond the projection range of the connecting step, and its bottom surface (i.e., the lower surface of the panel body) abuts against the side plate of the base. Alternatively, in other equivalent embodiments, a lower positioning post may be provided on the underside of the panel body. Furthermore, mounting holes may be provided on the panel body to accommodate the fingerprint recognition module.

[0009] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, the outer shell is made of a thinner and lighter material, which not only facilitates surface processing but also allows for diverse shapes; the base is disposed in the outer shell, and as a non-appearance component, the base can reduce appearance processing steps. Simultaneously, the thin-walled shape of the parts and the reduction of product weight through the setting of material-reducing grooves not only reduce the processing difficulty and weight of the product but also improve the surface quality, product qualification rate, and diversity of product shape variations; Second, the handle embedded module, as a component that can be pre-assembled, not only improves the product assembly efficiency but also allows for... The base and handle panel provide the first layer of protection for the electrical and moving parts housed within the base cavity. Third, after the handle's embedded module is connected to the outer shell, the joint line between the panel body and the base side plate falls within the outer shell cavity, improving the product's aesthetics and effectively reducing liquid ingress, providing double protection for the internal components and significantly enhancing the product's stability. Fourth, the L-shaped outer shell includes a grip section and a connecting shaft. Besides protecting the handle's embedded module through the grip section, the connecting shaft also protects the clutch block, reducing the exposure of moving connecting parts and improving the handle's connection stability.

[0010] Due to the aforementioned advantages of the double-layered lock handle, it can be applied to locks. The lock includes an outer module, an inner module, and a lock body. The outer module is installed on the outer side of the door leaf, the inner module is installed on the inner side of the door leaf, and the lock body is installed inside the door leaf. The lock body is equipped with a latch for locking the door leaf. The inner module includes an inner door handle. The outer module, including the double-layered lock handle, also includes a hollow square shaft. Both ends of the hollow square shaft are connected to the inner door handle and the double-layered lock handle, respectively. The middle of the hollow square shaft is connected to the latch, allowing the latch to extend and retract by rotating either the inner door handle or the double-layered lock handle.

[0011] Because of the above-mentioned features and advantages, this invention can be applied to lock handles with double-layer structures and the locks in which they are applied. Attached Figure Description

[0012] Figure 1 This is an exploded view of the lock.

[0013] Figure 2 This is a cross-sectional structural diagram of the lock;

[0014] Figure 3 This is a schematic diagram of the axial structure of a double-layered lock handle;

[0015] Figure 4 This is an exploded structural diagram of a double-layered lock handle;

[0016] Figure 5 This is a cross-sectional structural diagram of a lock handle with a double-layer structure;

[0017] Figure 6 yes Figure 5 A magnified schematic diagram of the local structure at point K;

[0018] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0019] Figure 8 This is a schematic diagram of the axial side structure of the outer casing;

[0020] Figure 9 This is a schematic diagram of the axial structure of the base. Detailed Implementation

[0021] The following description, in conjunction with the accompanying drawings, further illustrates the structure of the lock handle with a double-layer structure applying the technical solution of the present invention and the lock structure in which it is applied. Except where explicitly stated that these are equivalent or alternative embodiments, the various implementation details disclosed below may be selectively applied or combined in a single embodiment even if they are not directly related or synergistic in function.

[0022] like Figures 1-2 As shown, a lock includes an outer module 1, an inner module 2, and a lock body (not shown). The outer module 1 is installed on the outer side of the door leaf, the inner module 2 is installed on the inner side of the door leaf, and the lock body is installed in the door leaf. The lock body is provided with a latch for locking the door leaf. The inner module 2 includes an inner door handle 21. The outer module 1 includes a double-layered lock handle 4 and a hollow square shaft 31. The two ends of the hollow square shaft 31 are respectively connected to the inner door handle 21 and the double-layered lock handle 4. The middle part of the hollow square shaft 31 is connected to the latch in the lock body. By rotating the inner door handle 21 or the double-layered lock handle 4, the latch can be extended or retracted, thereby opening and closing the door leaf.

[0023] The following provides a detailed description of the double-layered lock handle 4, such as... Figures 3-9As shown, the double-layered lock handle 4 includes an embedded module 5 and a housing 6. The embedded module 5 includes a base 7 and a handle panel 8. The base 7 includes a base plate 71 and a base side plate 72, which together form a base cavity 70 with a base opening 73. The handle panel 8 includes a panel body 81, with an inwardly recessed connecting step 84 on the lower outer periphery of the panel body 81. When the handle panel 8 is closed onto the base opening 73, the lower surface of the panel body 81 is connected to the base side plate 72. Viewed from below, the base side plate 72 falls within the projection range of the connecting step 84. The housing 6 is L-shaped and includes a grip section 61 and a connecting shaft 62. The grip section 61 includes a housing base plate 63 and a housing side plate 64. The connecting shaft 62 is connected to one end of the housing base plate 63. The outer shell 6 is hollow and has an outer shell cavity 60. The edge of the shell side plate 64 forms a first shell opening 65, and the edge of the sleeve shaft 62 forms a second shell opening 66. The base 7 of the handle embedded module 5 can be inserted into the outer shell cavity 60 through the first shell opening 65. The upper end of the shell side plate 64 extends into the connecting step 84 and completely covers the joint line between the panel body 81 and the base side plate 72. A bottom plate through hole 67 is provided on the shell bottom plate 63. A screw passes through the bottom plate through hole 67 to connect the handle panel 8, thereby connecting the outer shell 6 and the handle embedded module 5 together. It also includes a clutch block 9 rotatably disposed in the base cavity 70. A base through hole 74 is provided on the base bottom plate 71. The lower end of the clutch block 9 extends into the outer shell cavity 60 defined by the sleeve shaft 62 through the base through hole 74.

[0024] The handle embedded module 5 and the outer shell 6 are independent components. The handle embedded module 5 can be prepared in advance as a pre-assembled component, and the two components are then connected together by screws. The base 7 is provided with a base cavity 70 to provide a positioning base for various components, such as the control circuit board 51, clutch block 9, engagement block 52, and the drive motor 53, lock cylinder 54, and drive rod 55 that drive the engagement block 52. When the handle panel 8 is closed on the base 7, it forms the first layer of protection for the electrical and moving parts located in the base cavity 70. Since the base 7 is located in the outer shell 6, the base 7 has no appearance requirements. The base 7 only needs to meet the requirements of size, structural strength, and safety. This makes the molding method of the base 7 more flexible, such as common metal die casting or plastic injection molding, which can not only effectively reduce product weight but also reduce manufacturing costs.

[0025] The handle panel 8 is an external component that can simultaneously connect the base 7 and the outer shell 6. In this embodiment, a lower protrusion 82 is also provided on the lower side of the panel body 81. The lower protrusion 82 does not exceed the projection range of the connecting step 84. The bottom surface of the lower protrusion 82 (i.e., the lower surface of the panel body 81) abuts against the base side plate 72, which allows for a better connection between the panel body 81 and the base side plate 72, and also allows the joint line to be moved further down. Furthermore, in order to accommodate the installation of the fingerprint recognition module, mounting holes can be provided on the panel body 81.

[0026] The outer shell 6 is a hollow component made of thin-walled profiles, with the profile thickness generally controlled between 0.2mm and 1.0mm. It is manufactured using common processing methods such as stamping, welding, or 3D printing. The appearance of the outer shell 6 can be varied as needed, and the outer surface only requires simple grinding or polishing. It is evident that the outer shell 6 is made of lighter and thinner materials, which not only reduces the processing difficulty and weight of the product but also improves the product's surface smoothness, product qualification rate, and the diversity of product design variations. Furthermore, after the handle embedded module 5 is connected to the outer shell 6, the joint line between the panel body 81 and the base side plate 72 is effectively concealed by the outer shell 6, improving the product's aesthetics and forming a second layer of protection.

[0027] The outer shell 6, which is L-shaped, has an outer shell cavity 60 that is also L-shaped. In this way, the outer shell cavity 60 can not only accommodate the handle embedded module 5 and protect the base 7 of the handle embedded module 5, but also cover the clutch block 9 and the hollow square shaft 31 mentioned below, which also plays a protective role for the clutch block 9.

[0028] To allow the base 7 and clutch block 9 to engage, a connecting block 52 is also included. A groove 75 is provided on the base plate 71, and the connecting block 52 slides back and forth within the groove 75. The clutch block 9 has at least one engaging notch 91. When the connecting block 52 moves closer to the clutch block 9, a portion of the connecting block 52 can be inserted into the engaging notch 91, allowing the base 7 to rotate with the clutch block 9. When the connecting block 52 moves away from the clutch block 9, the connecting block 52 separates from the clutch block 9, preventing the base 7 from rotating with the clutch block 9. The clutch block 9 is connected to the hollow square shaft 31. When the connecting block 52 and the clutch block 9 are separated, rotating the double-layered lock handle 4 located on the outside of the door will not cause the clutch block 9 or the hollow square shaft 31 to rotate.

[0029] The driving method of the connecting block 52 includes at least the following two methods, which can be implemented individually or in combination.

[0030] The first type also includes a drive motor 53 disposed in the base cavity 70. The drive motor 53 is connected to the engaging block 52 and can drive the engaging block 52 to move back and forth along the slide groove 75, thereby allowing the engaging block 52 to engage or disengage from the clutch block 9.

[0031] The second type also includes a lock cylinder 54 and a drive rod 55. One end of the drive rod 55 is connected to the lock cylinder, and the other end extends to the side of the engaging block 52. When the lock cylinder moves inward with the drive rod 55, the drive rod 55 can push the engaging block 52 to move and insert into the engaging notch 91 of the clutch block 9. It also includes a return spring 56, which is disposed between the engaging block 52 and the base 7. When the lock cylinder moves outward with the drive rod 55, the return spring 56 can push the engaging block 52 to return and move away from the engaging notch 91.

[0032] Furthermore, in order to limit the axial movement of the clutch block 9 and the engagement block 52, a positioning pressure plate 57 is also included. The positioning pressure plate 57 is disposed between the base 7 and the handle panel 8 and covers the clutch block 9 and the engagement block 52.

[0033] Furthermore, it also includes a control circuit board 51, which is disposed between the positioning plate 57 and the handle panel 8. The positioning plate 57 and the base 7 are respectively provided with corresponding first wire passage holes 571 and second wire passage holes 76. The connecting wires connected to the control circuit board 51 pass through the first wire passage holes 571 and the second wire passage holes 76 and extend downward into the outer shell cavity 60 defined by the sleeve shaft 62.

[0034] The lock has multiple control modes, which are controlled by a controller on the control circuit board 51. To achieve adjustment control, an adjustment knob 22 is also provided on the inner door handle 21. The double-layered lock handle 4 is provided with an adjustment block 58 and a sensor switch 59. The clutch block 9 is also provided with a central through hole 92. The adjustment block 58 is rotatably disposed in the central through hole 92. The adjustment block 58 is provided with a positioning ball 581 and a positioning spring 582. The positioning pressure plate 57 is provided with three positioning holes 572. Under the action of the positioning spring 582, some of the positioning balls 581 can fall into the positioning holes 572 when moving, thereby positioning the adjustment block 58 on the positioning pressure plate 57. Furthermore, it also includes a center lever 23, one end of which is connected to the adjustment knob 22, and the other end passes through the hollow square shaft 31 and is connected to the adjustment block 58. A trigger 583 is provided on the adjustment block 58. By rotating the adjustment knob 22, the adjustment block 58 can be driven to rotate. When the trigger 583 approaches the inductive switch 59 (i.e., when the adjustment block 58 is engaged with one of the positioning holes 572 through the positioning ball 581), the inductive switch 59 can send a trigger signal to the controller. The controller then controls the drive motor 53 to drive the engagement block 52 to engage or disengage with the clutch block 9 according to the different signals received.

[0035] In this embodiment, the adjustment knob 22 has three modes. The first is the normal locking mode, where the control circuit board 51 is also equipped with a fingerprint recognition module or a password pickup module. When the controller receives a correct fingerprint or password recognition signal, it controls the drive motor 53 to drive the engaging block 52 to engage with the clutch block 9, thereby unlocking the door. The second is the normally open mode, where the controller controls the drive motor 53 to keep the engaging block 52 and the clutch block 9 engaged, allowing anyone to open the door using the handle from the outside. The third is the private mode, where the controller only controls the drive motor 53 to engage the engaging block 52 and the clutch block 9 to unlock the door when it receives a specifically designated fingerprint or password recognition signal.

Claims

1. A lock handle of double-layer construction, characterized in that, The handle embedded module comprises a base and a handle panel, the base comprises a base bottom plate and a base side plate, the base bottom plate and the base side plate form a base cavity with a base opening, the handle panel comprises a panel body, an inwardly recessed connecting step is arranged at the outer circumferential lower edge of the panel body, when the handle panel covers the base opening, the lower side surface of the panel body is connected with the base side plate, and the base side plate falls within the projection range of the connecting step as viewed from bottom to top; the shell is L-shaped and comprises a holding segment and a sleeve shaft, the holding segment comprises a shell bottom plate and a shell side plate, the sleeve shaft is connected to one end of the shell bottom plate, the shell is hollow and has a shell cavity, the edge of the shell side plate forms a shell first opening, the edge of the sleeve shaft forms a shell second opening, the base of the handle embedded module can be placed into the shell cavity through the shell first opening, and the upper end of the shell side plate extends into the connecting step and completely covers the joint line between the panel body and the base side plate, a bottom plate through hole is arranged on the shell bottom plate, a screw passes through the bottom plate through hole to connect the handle panel, so that the shell and the handle embedded module are connected together; further comprising a clutch block rotatably arranged in the base cavity, a base through hole is arranged on the base bottom plate, and the lower end of the clutch block extends into the shell cavity delimited by the sleeve shaft through the base through hole.

2. The dual-layer configured lockset handle of claim 1, wherein, Further comprising an engaging block, a sliding groove is further arranged on the base bottom plate, the engaging block is arranged in the sliding groove and moves back and forth, at least one engaging notch is arranged on the clutch block, when the engaging block moves close to the clutch block, part of the engaging block can be inserted into the engaging notch, so that the base rotates together with the clutch block; when the engaging block moves away from the clutch block, the engaging block is separated from the clutch block, so that the base cannot rotate together with the clutch block.

3. The dual-layer configured lockset handle of claim 2, wherein, Further comprising a driving motor arranged in the base cavity, the driving motor is drivingly connected with the engaging block and can drive the engaging block to move back and forth along the sliding groove, so that the engaging block can be combined with or separated from the clutch block.

4. The dual-layer configured lockset handle of claim 3, wherein, Further comprising a lock cylinder and a driving rod, one end of the driving rod is connected with the lock cylinder, the other end of the driving rod extends to the side edge of the engaging block, when the lock cylinder moves inward together with the driving rod, the driving rod can push the engaging block to move and insert into the engaging notch of the clutch block; further comprising a reset spring, the reset spring is arranged between the engaging block and the base, when the lock cylinder moves outward together with the driving rod, the reset spring can push the engaging block to reset and move away from the engaging notch.

5. The dual-layer configured lockset handle of claim 2, wherein, Further comprising a positioning pressing plate, the positioning pressing plate is arranged between the base and the handle panel and presses on the clutch block and the engaging block.

6. The dual-layer configured lockset handle of claim 5, wherein, Also include control circuit board, the control circuit board is located between the positioning pressing plate and handle panel, the positioning pressing plate, base respectively provided with corresponding first wire hole, second wire hole, the connecting wire connected to the control circuit board passes through the first wire hole and second wire hole and extends downward to the shell cavity.

7. The dual-layer configured lockset handle of claim 5, wherein, The intermediate through hole is further arranged on the clutch block, and the adjusting block is rotatably arranged in the intermediate through hole.

8. The dual-layer configured lockset handle of claim 7, wherein, The positioning ball and the positioning spring are arranged on the adjusting block, and the positioning hole is arranged on the positioning pressing plate. Under the action of the positioning spring, part of the positioning ball can fall into the positioning hole, so that the adjusting block is positioned and connected to the positioning pressing plate.

9. A lockset comprising an outer module, an inner module and a lock body, the outer module being mounted on the outer side of a door leaf, the inner module being mounted on the inner side of the door leaf, the lock body being mounted in the door leaf, the lock body being provided with a bolt for locking the door leaf, the inner module comprising an inside handle; characterized in that, The outer module comprises the double-layer structure lock handle of any one of claims 1-8, and further comprises a hollow square shaft, both ends of the hollow square shaft are connected to the inner handle and the double-layer structure lock handle, and the middle part of the hollow square shaft is in transmission connection with the lock tongue. By rotating the inner handle or the double-layer structure lock handle, the lock tongue can be driven to stretch and retract.

10. The lock of claim 9, wherein, The adjusting knob is further arranged on the inner handle, the double-layer structure lock handle located outside the door leaf is provided with an adjusting block, an induction switch and a controller, and a center lever is further included. One end of the center lever is connected to the adjusting knob, and the other end of the center lever is connected to the adjusting block through the hollow square shaft. A trigger is arranged on the adjusting block. By rotating the adjusting knob, the adjusting block can be rotated. When the trigger is close to the induction switch, the induction switch can send a trigger signal to the controller.

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